| sqlite3_column_bytes | → | Size of a BLOB
@@ -5658,7 +5860,7 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt);
** The return value of sqlite3_column_type() can be used to decide which
** of the first six interface should be used to extract the column value.
** The value returned by sqlite3_column_type() is only meaningful if no
-** automatic type conversions have occurred for the value in question.
+** automatic type conversions have occurred for the value in question.
** After a type conversion, the result of calling sqlite3_column_type()
** is undefined, though harmless. Future
** versions of SQLite may change the behavior of sqlite3_column_type()
@@ -5686,7 +5888,7 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt);
** the number of bytes in that string.
** ^If the result is NULL, then sqlite3_column_bytes16() returns zero.
**
-** ^The values returned by [sqlite3_column_bytes()] and
+** ^The values returned by [sqlite3_column_bytes()] and
** [sqlite3_column_bytes16()] do not include the zero terminators at the end
** of the string. ^For clarity: the values returned by
** [sqlite3_column_bytes()] and [sqlite3_column_bytes16()] are the number of
@@ -5705,7 +5907,7 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt);
** to routines like [sqlite3_value_int()], [sqlite3_value_text()],
** or [sqlite3_value_bytes()], the behavior is not threadsafe.
** Hence, the sqlite3_column_value() interface
-** is normally only useful within the implementation of
+** is normally only useful within the implementation of
** [application-defined SQL functions] or [virtual tables], not within
** top-level application code.
**
@@ -5875,15 +6077,13 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt);
/*
** CAPI3REF: Create Or Redefine SQL Functions
** KEYWORDS: {function creation routines}
-** KEYWORDS: {application-defined SQL function}
-** KEYWORDS: {application-defined SQL functions}
** METHOD: sqlite3
**
** ^These functions (collectively known as "function creation routines")
** are used to add SQL functions or aggregates or to redefine the behavior
** of existing SQL functions or aggregates. The only differences between
-** the three "sqlite3_create_function*" routines are the text encoding
-** expected for the second parameter (the name of the function being
+** the three "sqlite3_create_function*" routines are the text encoding
+** expected for the second parameter (the name of the function being
** created) and the presence or absence of a destructor callback for
** the application data pointer. Function sqlite3_create_window_function()
** is similar, but allows the user to supply the extra callback functions
@@ -5897,7 +6097,7 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt);
** ^The second parameter is the name of the SQL function to be created or
** redefined. ^The length of the name is limited to 255 bytes in a UTF-8
** representation, exclusive of the zero-terminator. ^Note that the name
-** length limit is in UTF-8 bytes, not characters nor UTF-16 bytes.
+** length limit is in UTF-8 bytes, not characters nor UTF-16 bytes.
** ^Any attempt to create a function with a longer name
** will result in [SQLITE_MISUSE] being returned.
**
@@ -5912,7 +6112,7 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt);
** ^The fourth parameter, eTextRep, specifies what
** [SQLITE_UTF8 | text encoding] this SQL function prefers for
** its parameters. The application should set this parameter to
-** [SQLITE_UTF16LE] if the function implementation invokes
+** [SQLITE_UTF16LE] if the function implementation invokes
** [sqlite3_value_text16le()] on an input, or [SQLITE_UTF16BE] if the
** implementation invokes [sqlite3_value_text16be()] on an input, or
** [SQLITE_UTF16] if [sqlite3_value_text16()] is used, or [SQLITE_UTF8]
@@ -5932,9 +6132,20 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt);
**
** ^The fourth parameter may also optionally include the [SQLITE_DIRECTONLY]
** flag, which if present prevents the function from being invoked from
-** within VIEWs or TRIGGERs. For security reasons, the [SQLITE_DIRECTONLY]
-** flag is recommended for any application-defined SQL function that has
-** side-effects.
+** within VIEWs, TRIGGERs, CHECK constraints, generated column expressions,
+** index expressions, or the WHERE clause of partial indexes.
+**
+**
+** For best security, the [SQLITE_DIRECTONLY] flag is recommended for
+** all application-defined SQL functions that do not need to be
+** used inside of triggers, view, CHECK constraints, or other elements of
+** the database schema. This flags is especially recommended for SQL
+** functions that have side effects or reveal internal application state.
+** Without this flag, an attacker might be able to modify the schema of
+** a database file to include invocations of the function with parameters
+** chosen by the attacker, which the application will then execute when
+** the database file is opened and read.
+**
**
** ^(The fifth parameter is an arbitrary pointer. The implementation of the
** function can gain access to this pointer using [sqlite3_user_data()].)^
@@ -5949,21 +6160,21 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt);
** SQL function or aggregate, pass NULL pointers for all three function
** callbacks.
**
-** ^The sixth, seventh, eighth and ninth parameters (xStep, xFinal, xValue
+** ^The sixth, seventh, eighth and ninth parameters (xStep, xFinal, xValue
** and xInverse) passed to sqlite3_create_window_function are pointers to
** C-language callbacks that implement the new function. xStep and xFinal
** must both be non-NULL. xValue and xInverse may either both be NULL, in
-** which case a regular aggregate function is created, or must both be
+** which case a regular aggregate function is created, or must both be
** non-NULL, in which case the new function may be used as either an aggregate
** or aggregate window function. More details regarding the implementation
-** of aggregate window functions are
+** of aggregate window functions are
** [user-defined window functions|available here].
**
** ^(If the final parameter to sqlite3_create_function_v2() or
** sqlite3_create_window_function() is not NULL, then it is destructor for
-** the application data pointer. The destructor is invoked when the function
-** is deleted, either by being overloaded or when the database connection
-** closes.)^ ^The destructor is also invoked if the call to
+** the application data pointer. The destructor is invoked when the function
+** is deleted, either by being overloaded or when the database connection
+** closes.)^ ^The destructor is also invoked if the call to
** sqlite3_create_function_v2() fails. ^When the destructor callback is
** invoked, it is passed a single argument which is a copy of the application
** data pointer which was the fifth parameter to sqlite3_create_function_v2().
@@ -5976,7 +6187,7 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt);
** nArg parameter is a better match than a function implementation with
** a negative nArg. ^A function where the preferred text encoding
** matches the database encoding is a better
-** match than a function where the encoding is different.
+** match than a function where the encoding is different.
** ^A function where the encoding difference is between UTF16le and UTF16be
** is a closer match than a function where the encoding difference is
** between UTF8 and UTF16.
@@ -6048,23 +6259,58 @@ SQLITE_API int sqlite3_create_window_function(
/*
** CAPI3REF: Function Flags
**
-** These constants may be ORed together with the
+** These constants may be ORed together with the
** [SQLITE_UTF8 | preferred text encoding] as the fourth argument
** to [sqlite3_create_function()], [sqlite3_create_function16()], or
** [sqlite3_create_function_v2()].
**
-** The SQLITE_DETERMINISTIC flag means that the new function will always
-** maps the same inputs into the same output. The abs() function is
-** deterministic, for example, but randomblob() is not.
+**
+** [[SQLITE_DETERMINISTIC]] - SQLITE_DETERMINISTIC
-
+** The SQLITE_DETERMINISTIC flag means that the new function always gives
+** the same output when the input parameters are the same.
+** The [abs|abs() function] is deterministic, for example, but
+** [randomblob|randomblob()] is not. Functions must
+** be deterministic in order to be used in certain contexts such as
+** with the WHERE clause of [partial indexes] or in [generated columns].
+** SQLite might also optimize deterministic functions by factoring them
+** out of inner loops.
+**
**
+** [[SQLITE_DIRECTONLY]] - SQLITE_DIRECTONLY
-
** The SQLITE_DIRECTONLY flag means that the function may only be invoked
-** from top-level SQL, and cannot be used in VIEWs or TRIGGERs. This is
-** a security feature which is recommended for all
-** [application-defined SQL functions] that have side-effects. This flag
-** prevents an attacker from adding triggers and views to a schema then
-** tricking a high-privilege application into causing unintended side-effects
-** while performing ordinary queries.
+** from top-level SQL, and cannot be used in VIEWs or TRIGGERs nor in
+** schema structures such as [CHECK constraints], [DEFAULT clauses],
+** [expression indexes], [partial indexes], or [generated columns].
+** The SQLITE_DIRECTONLY flags is a security feature which is recommended
+** for all [application-defined SQL functions], and especially for functions
+** that have side-effects or that could potentially leak sensitive
+** information.
+**
**
+** [[SQLITE_INNOCUOUS]] - SQLITE_INNOCUOUS
-
+** The SQLITE_INNOCUOUS flag means that the function is unlikely
+** to cause problems even if misused. An innocuous function should have
+** no side effects and should not depend on any values other than its
+** input parameters. The [abs|abs() function] is an example of an
+** innocuous function.
+** The [load_extension() SQL function] is not innocuous because of its
+** side effects.
+**
SQLITE_INNOCUOUS is similar to SQLITE_DETERMINISTIC, but is not
+** exactly the same. The [random|random() function] is an example of a
+** function that is innocuous but not deterministic.
+** Some heightened security settings
+** ([SQLITE_DBCONFIG_TRUSTED_SCHEMA] and [PRAGMA trusted_schema=OFF])
+** disable the use of SQL functions inside views and triggers and in
+** schema structures such as [CHECK constraints], [DEFAULT clauses],
+** [expression indexes], [partial indexes], and [generated columns] unless
+** the function is tagged with SQLITE_INNOCUOUS. Most built-in functions
+** are innocuous. Developers are advised to avoid using the
+** SQLITE_INNOCUOUS flag for application-defined functions unless the
+** function has been carefully audited and found to be free of potentially
+** security-adverse side-effects and information-leaks.
+**
+**
+** [[SQLITE_SUBTYPE]] - SQLITE_SUBTYPE
-
** The SQLITE_SUBTYPE flag indicates to SQLite that a function may call
** [sqlite3_value_subtype()] to inspect the sub-types of its arguments.
** Specifying this flag makes no difference for scalar or aggregate user
@@ -6072,17 +6318,20 @@ SQLITE_API int sqlite3_create_window_function(
** function, then any sub-types belonging to arguments passed to the window
** function may be discarded before the window function is called (i.e.
** sqlite3_value_subtype() will always return 0).
+**
+**
*/
#define SQLITE_DETERMINISTIC 0x000000800
#define SQLITE_DIRECTONLY 0x000080000
#define SQLITE_SUBTYPE 0x000100000
+#define SQLITE_INNOCUOUS 0x000200000
/*
** CAPI3REF: Deprecated Functions
** DEPRECATED
**
** These functions are [deprecated]. In order to maintain
-** backwards compatibility with older code, these functions continue
+** backwards compatibility with older code, these functions continue
** to be supported. However, new applications should avoid
** the use of these functions. To encourage programmers to avoid
** these functions, we will not explain what they do.
@@ -6134,8 +6383,8 @@ SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int6
**
** These routines extract type, size, and content information from
** [protected sqlite3_value] objects. Protected sqlite3_value objects
-** are used to pass parameter information into implementation of
-** [application-defined SQL functions] and [virtual tables].
+** are used to pass parameter information into the functions that
+** implement [application-defined SQL functions] and [virtual tables].
**
** These routines work only with [protected sqlite3_value] objects.
** Any attempt to use these routines on an [unprotected sqlite3_value]
@@ -6150,11 +6399,11 @@ SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int6
** sqlite3_value_text16be() and sqlite3_value_text16le() interfaces
** extract UTF-16 strings as big-endian and little-endian respectively.
**
-** ^If [sqlite3_value] object V was initialized
+** ^If [sqlite3_value] object V was initialized
** using [sqlite3_bind_pointer(S,I,P,X,D)] or [sqlite3_result_pointer(C,P,X,D)]
** and if X and Y are strings that compare equal according to strcmp(X,Y),
** then sqlite3_value_pointer(V,Y) will return the pointer P. ^Otherwise,
-** sqlite3_value_pointer(V,Y) returns a NULL. The sqlite3_bind_pointer()
+** sqlite3_value_pointer(V,Y) returns a NULL. The sqlite3_bind_pointer()
** routine is part of the [pointer passing interface] added for SQLite 3.20.0.
**
** ^(The sqlite3_value_type(V) interface returns the
@@ -6192,7 +6441,7 @@ SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int6
** ^The sqlite3_value_frombind(X) interface returns non-zero if the
** value X originated from one of the [sqlite3_bind_int|sqlite3_bind()]
** interfaces. ^If X comes from an SQL literal value, or a table column,
-** and expression, then sqlite3_value_frombind(X) returns zero.
+** or an expression, then sqlite3_value_frombind(X) returns zero.
**
** Please pay particular attention to the fact that the pointer returned
** from [sqlite3_value_blob()], [sqlite3_value_text()], or
@@ -6277,9 +6526,9 @@ SQLITE_API void sqlite3_value_free(sqlite3_value*);
** Implementations of aggregate SQL functions use this
** routine to allocate memory for storing their state.
**
-** ^The first time the sqlite3_aggregate_context(C,N) routine is called
-** for a particular aggregate function, SQLite
-** allocates N of memory, zeroes out that memory, and returns a pointer
+** ^The first time the sqlite3_aggregate_context(C,N) routine is called
+** for a particular aggregate function, SQLite allocates
+** N bytes of memory, zeroes out that memory, and returns a pointer
** to the new memory. ^On second and subsequent calls to
** sqlite3_aggregate_context() for the same aggregate function instance,
** the same buffer is returned. Sqlite3_aggregate_context() is normally
@@ -6290,19 +6539,19 @@ SQLITE_API void sqlite3_value_free(sqlite3_value*);
** In those cases, sqlite3_aggregate_context() might be called for the
** first time from within xFinal().)^
**
-** ^The sqlite3_aggregate_context(C,N) routine returns a NULL pointer
+** ^The sqlite3_aggregate_context(C,N) routine returns a NULL pointer
** when first called if N is less than or equal to zero or if a memory
** allocate error occurs.
**
** ^(The amount of space allocated by sqlite3_aggregate_context(C,N) is
** determined by the N parameter on first successful call. Changing the
-** value of N in subsequent call to sqlite3_aggregate_context() within
+** value of N in any subsequent call to sqlite3_aggregate_context() within
** the same aggregate function instance will not resize the memory
** allocation.)^ Within the xFinal callback, it is customary to set
-** N=0 in calls to sqlite3_aggregate_context(C,N) so that no
+** N=0 in calls to sqlite3_aggregate_context(C,N) so that no
** pointless memory allocations occur.
**
-** ^SQLite automatically frees the memory allocated by
+** ^SQLite automatically frees the memory allocated by
** sqlite3_aggregate_context() when the aggregate query concludes.
**
** The first parameter must be a copy of the
@@ -6352,7 +6601,7 @@ SQLITE_API sqlite3 *sqlite3_context_db_handle(sqlite3_context*);
** some circumstances the associated metadata may be preserved. An example
** of where this might be useful is in a regular-expression matching
** function. The compiled version of the regular expression can be stored as
-** metadata associated with the pattern string.
+** metadata associated with the pattern string.
** Then as long as the pattern string remains the same,
** the compiled regular expression can be reused on multiple
** invocations of the same function.
@@ -6378,10 +6627,10 @@ SQLITE_API sqlite3 *sqlite3_context_db_handle(sqlite3_context*);
** SQL statement)^, or
** ^(when sqlite3_set_auxdata() is invoked again on the same
** parameter)^, or
-** ^(during the original sqlite3_set_auxdata() call when a memory
+** ^(during the original sqlite3_set_auxdata() call when a memory
** allocation error occurs.)^
**
-** Note the last bullet in particular. The destructor X in
+** Note the last bullet in particular. The destructor X in
** sqlite3_set_auxdata(C,N,P,X) might be called immediately, before the
** sqlite3_set_auxdata() interface even returns. Hence sqlite3_set_auxdata()
** should be called near the end of the function implementation and the
@@ -6453,8 +6702,9 @@ typedef void (*sqlite3_destructor_type)(void*);
** 2nd parameter of sqlite3_result_error() or sqlite3_result_error16()
** as the text of an error message. ^SQLite interprets the error
** message string from sqlite3_result_error() as UTF-8. ^SQLite
-** interprets the string from sqlite3_result_error16() as UTF-16 in native
-** byte order. ^If the third parameter to sqlite3_result_error()
+** interprets the string from sqlite3_result_error16() as UTF-16 using
+** the same [byte-order determination rules] as [sqlite3_bind_text16()].
+** ^If the third parameter to sqlite3_result_error()
** or sqlite3_result_error16() is negative then SQLite takes as the error
** message all text up through the first zero character.
** ^If the third parameter to sqlite3_result_error() or
@@ -6522,6 +6772,25 @@ typedef void (*sqlite3_destructor_type)(void*);
** then SQLite makes a copy of the result into space obtained
** from [sqlite3_malloc()] before it returns.
**
+** ^For the sqlite3_result_text16(), sqlite3_result_text16le(), and
+** sqlite3_result_text16be() routines, and for sqlite3_result_text64()
+** when the encoding is not UTF8, if the input UTF16 begins with a
+** byte-order mark (BOM, U+FEFF) then the BOM is removed from the
+** string and the rest of the string is interpreted according to the
+** byte-order specified by the BOM. ^The byte-order specified by
+** the BOM at the beginning of the text overrides the byte-order
+** specified by the interface procedure. ^So, for example, if
+** sqlite3_result_text16le() is invoked with text that begins
+** with bytes 0xfe, 0xff (a big-endian byte-order mark) then the
+** first two bytes of input are skipped and the remaining input
+** is interpreted as UTF16BE text.
+**
+** ^For UTF16 input text to the sqlite3_result_text16(),
+** sqlite3_result_text16be(), sqlite3_result_text16le(), and
+** sqlite3_result_text64() routines, if the text contains invalid
+** UTF16 characters, the invalid characters might be converted
+** into the unicode replacement character, U+FFFD.
+**
** ^The sqlite3_result_value() interface sets the result of
** the application-defined function to be a copy of the
** [unprotected sqlite3_value] object specified by the 2nd parameter. ^The
@@ -6534,7 +6803,7 @@ typedef void (*sqlite3_destructor_type)(void*);
**
** ^The sqlite3_result_pointer(C,P,T,D) interface sets the result to an
** SQL NULL value, just like [sqlite3_result_null(C)], except that it
-** also associates the host-language pointer P or type T with that
+** also associates the host-language pointer P or type T with that
** NULL value such that the pointer can be retrieved within an
** [application-defined SQL function] using [sqlite3_value_pointer()].
** ^If the D parameter is not NULL, then it is a pointer to a destructor
@@ -6576,8 +6845,8 @@ SQLITE_API int sqlite3_result_zeroblob64(sqlite3_context*, sqlite3_uint64 n);
** METHOD: sqlite3_context
**
** The sqlite3_result_subtype(C,T) function causes the subtype of
-** the result from the [application-defined SQL function] with
-** [sqlite3_context] C to be the value T. Only the lower 8 bits
+** the result from the [application-defined SQL function] with
+** [sqlite3_context] C to be the value T. Only the lower 8 bits
** of the subtype T are preserved in current versions of SQLite;
** higher order bits are discarded.
** The number of subtype bytes preserved by SQLite might increase
@@ -6607,7 +6876,7 @@ SQLITE_API void sqlite3_result_subtype(sqlite3_context*,unsigned int);
** [SQLITE_UTF16_ALIGNED].
** )^
** ^The eTextRep argument determines the encoding of strings passed
-** to the collating function callback, xCallback.
+** to the collating function callback, xCompare.
** ^The [SQLITE_UTF16] and [SQLITE_UTF16_ALIGNED] values for eTextRep
** force strings to be UTF16 with native byte order.
** ^The [SQLITE_UTF16_ALIGNED] value for eTextRep forces strings to begin
@@ -6616,18 +6885,19 @@ SQLITE_API void sqlite3_result_subtype(sqlite3_context*,unsigned int);
** ^The fourth argument, pArg, is an application data pointer that is passed
** through as the first argument to the collating function callback.
**
-** ^The fifth argument, xCallback, is a pointer to the collating function.
+** ^The fifth argument, xCompare, is a pointer to the collating function.
** ^Multiple collating functions can be registered using the same name but
** with different eTextRep parameters and SQLite will use whichever
** function requires the least amount of data transformation.
-** ^If the xCallback argument is NULL then the collating function is
+** ^If the xCompare argument is NULL then the collating function is
** deleted. ^When all collating functions having the same name are deleted,
** that collation is no longer usable.
**
-** ^The collating function callback is invoked with a copy of the pArg
+** ^The collating function callback is invoked with a copy of the pArg
** application data pointer and with two strings in the encoding specified
-** by the eTextRep argument. The collating function must return an
-** integer that is negative, zero, or positive
+** by the eTextRep argument. The two integer parameters to the collating
+** function callback are the length of the two strings, in bytes. The collating
+** function must return an integer that is negative, zero, or positive
** if the first string is less than, equal to, or greater than the second,
** respectively. A collating function must always return the same answer
** given the same inputs. If two or more collating functions are registered
@@ -6644,7 +6914,7 @@ SQLITE_API void sqlite3_result_subtype(sqlite3_context*,unsigned int);
**
**
** If a collating function fails any of the above constraints and that
-** collating function is registered and used, then the behavior of SQLite
+** collating function is registered and used, then the behavior of SQLite
** is undefined.
**
** ^The sqlite3_create_collation_v2() works like sqlite3_create_collation()
@@ -6654,36 +6924,36 @@ SQLITE_API void sqlite3_result_subtype(sqlite3_context*,unsigned int);
** calls to the collation creation functions or when the
** [database connection] is closed using [sqlite3_close()].
**
-** ^The xDestroy callback is not called if the
+** ^The xDestroy callback is not called if the
** sqlite3_create_collation_v2() function fails. Applications that invoke
-** sqlite3_create_collation_v2() with a non-NULL xDestroy argument should
+** sqlite3_create_collation_v2() with a non-NULL xDestroy argument should
** check the return code and dispose of the application data pointer
** themselves rather than expecting SQLite to deal with it for them.
-** This is different from every other SQLite interface. The inconsistency
-** is unfortunate but cannot be changed without breaking backwards
+** This is different from every other SQLite interface. The inconsistency
+** is unfortunate but cannot be changed without breaking backwards
** compatibility.
**
** See also: [sqlite3_collation_needed()] and [sqlite3_collation_needed16()].
*/
SQLITE_API int sqlite3_create_collation(
- sqlite3*,
- const char *zName,
- int eTextRep,
+ sqlite3*,
+ const char *zName,
+ int eTextRep,
void *pArg,
int(*xCompare)(void*,int,const void*,int,const void*)
);
SQLITE_API int sqlite3_create_collation_v2(
- sqlite3*,
- const char *zName,
- int eTextRep,
+ sqlite3*,
+ const char *zName,
+ int eTextRep,
void *pArg,
int(*xCompare)(void*,int,const void*,int,const void*),
void(*xDestroy)(void*)
);
SQLITE_API int sqlite3_create_collation16(
- sqlite3*,
+ sqlite3*,
const void *zName,
- int eTextRep,
+ int eTextRep,
void *pArg,
int(*xCompare)(void*,int,const void*,int,const void*)
);
@@ -6716,64 +6986,19 @@ SQLITE_API int sqlite3_create_collation16(
** [sqlite3_create_collation_v2()].
*/
SQLITE_API int sqlite3_collation_needed(
- sqlite3*,
- void*,
+ sqlite3*,
+ void*,
void(*)(void*,sqlite3*,int eTextRep,const char*)
);
SQLITE_API int sqlite3_collation_needed16(
- sqlite3*,
+ sqlite3*,
void*,
void(*)(void*,sqlite3*,int eTextRep,const void*)
);
-#ifdef SQLITE_HAS_CODEC
-/*
-** Specify the key for an encrypted database. This routine should be
-** called right after sqlite3_open().
-**
-** The code to implement this API is not available in the public release
-** of SQLite.
-*/
-SQLITE_API int sqlite3_key(
- sqlite3 *db, /* Database to be rekeyed */
- const void *pKey, int nKey /* The key */
-);
-SQLITE_API int sqlite3_key_v2(
- sqlite3 *db, /* Database to be rekeyed */
- const char *zDbName, /* Name of the database */
- const void *pKey, int nKey /* The key */
-);
-
-/*
-** Change the key on an open database. If the current database is not
-** encrypted, this routine will encrypt it. If pNew==0 or nNew==0, the
-** database is decrypted.
-**
-** The code to implement this API is not available in the public release
-** of SQLite.
-*/
-SQLITE_API int sqlite3_rekey(
- sqlite3 *db, /* Database to be rekeyed */
- const void *pKey, int nKey /* The new key */
-);
-SQLITE_API int sqlite3_rekey_v2(
- sqlite3 *db, /* Database to be rekeyed */
- const char *zDbName, /* Name of the database */
- const void *pKey, int nKey /* The new key */
-);
-
-/*
-** Specify the activation key for a SEE database. Unless
-** activated, none of the SEE routines will work.
-*/
-SQLITE_API void sqlite3_activate_see(
- const char *zPassPhrase /* Activation phrase */
-);
-#endif
-
#ifdef SQLITE_ENABLE_CEROD
/*
-** Specify the activation key for a CEROD database. Unless
+** Specify the activation key for a CEROD database. Unless
** activated, none of the CEROD routines will work.
*/
SQLITE_API void sqlite3_activate_cerod(
@@ -6829,7 +7054,7 @@ SQLITE_API int sqlite3_sleep(int);
** ^The [temp_store_directory pragma] may modify this variable and cause
** it to point to memory obtained from [sqlite3_malloc]. ^Furthermore,
** the [temp_store_directory pragma] always assumes that any string
-** that this variable points to is held in memory obtained from
+** that this variable points to is held in memory obtained from
** [sqlite3_malloc] and the pragma may attempt to free that memory
** using [sqlite3_free].
** Hence, if this variable is modified directly, either it should be
@@ -6886,7 +7111,7 @@ SQLITE_API char *sqlite3_temp_directory;
** ^The [data_store_directory pragma] may modify this variable and cause
** it to point to memory obtained from [sqlite3_malloc]. ^Furthermore,
** the [data_store_directory pragma] always assumes that any string
-** that this variable points to is held in memory obtained from
+** that this variable points to is held in memory obtained from
** [sqlite3_malloc] and the pragma may attempt to free that memory
** using [sqlite3_free].
** Hence, if this variable is modified directly, either it should be
@@ -6971,16 +7196,31 @@ SQLITE_API sqlite3 *sqlite3_db_handle(sqlite3_stmt*);
** CAPI3REF: Return The Filename For A Database Connection
** METHOD: sqlite3
**
-** ^The sqlite3_db_filename(D,N) interface returns a pointer to a filename
-** associated with database N of connection D. ^The main database file
-** has the name "main". If there is no attached database N on the database
+** ^The sqlite3_db_filename(D,N) interface returns a pointer to the filename
+** associated with database N of connection D.
+** ^If there is no attached database N on the database
** connection D, or if database N is a temporary or in-memory database, then
** this function will return either a NULL pointer or an empty string.
**
+** ^The string value returned by this routine is owned and managed by
+** the database connection. ^The value will be valid until the database N
+** is [DETACH]-ed or until the database connection closes.
+**
** ^The filename returned by this function is the output of the
** xFullPathname method of the [VFS]. ^In other words, the filename
** will be an absolute pathname, even if the filename used
** to open the database originally was a URI or relative pathname.
+**
+** If the filename pointer returned by this routine is not NULL, then it
+** can be used as the filename input parameter to these routines:
+**
+** - [sqlite3_uri_parameter()]
+**
- [sqlite3_uri_boolean()]
+**
- [sqlite3_uri_int64()]
+**
- [sqlite3_filename_database()]
+**
- [sqlite3_filename_journal()]
+**
- [sqlite3_filename_wal()]
+**
*/
SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName);
@@ -7084,7 +7324,7 @@ SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*);
** ^In the case of an update, this is the [rowid] after the update takes place.
**
** ^(The update hook is not invoked when internal system tables are
-** modified (i.e. sqlite_master and sqlite_sequence).)^
+** modified (i.e. sqlite_sequence).)^
** ^The update hook is not invoked when [WITHOUT ROWID] tables are modified.
**
** ^In the current implementation, the update hook
@@ -7110,7 +7350,7 @@ SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*);
** and [sqlite3_preupdate_hook()] interfaces.
*/
SQLITE_API void *sqlite3_update_hook(
- sqlite3*,
+ sqlite3*,
void(*)(void *,int ,char const *,char const *,sqlite3_int64),
void*
);
@@ -7124,25 +7364,29 @@ SQLITE_API void *sqlite3_update_hook(
** and disabled if the argument is false.)^
**
** ^Cache sharing is enabled and disabled for an entire process.
-** This is a change as of SQLite [version 3.5.0] ([dateof:3.5.0]).
+** This is a change as of SQLite [version 3.5.0] ([dateof:3.5.0]).
** In prior versions of SQLite,
** sharing was enabled or disabled for each thread separately.
**
** ^(The cache sharing mode set by this interface effects all subsequent
** calls to [sqlite3_open()], [sqlite3_open_v2()], and [sqlite3_open16()].
-** Existing database connections continue use the sharing mode
+** Existing database connections continue to use the sharing mode
** that was in effect at the time they were opened.)^
**
** ^(This routine returns [SQLITE_OK] if shared cache was enabled or disabled
** successfully. An [error code] is returned otherwise.)^
**
-** ^Shared cache is disabled by default. But this might change in
-** future releases of SQLite. Applications that care about shared
-** cache setting should set it explicitly.
+** ^Shared cache is disabled by default. It is recommended that it stay
+** that way. In other words, do not use this routine. This interface
+** continues to be provided for historical compatibility, but its use is
+** discouraged. Any use of shared cache is discouraged. If shared cache
+** must be used, it is recommended that shared cache only be enabled for
+** individual database connections using the [sqlite3_open_v2()] interface
+** with the [SQLITE_OPEN_SHAREDCACHE] flag.
**
** Note: This method is disabled on MacOS X 10.7 and iOS version 5.0
-** and will always return SQLITE_MISUSE. On those systems,
-** shared cache mode should be enabled per-database connection via
+** and will always return SQLITE_MISUSE. On those systems,
+** shared cache mode should be enabled per-database connection via
** [sqlite3_open_v2()] with [SQLITE_OPEN_SHAREDCACHE].
**
** This interface is threadsafe on processors where writing a
@@ -7195,7 +7439,7 @@ SQLITE_API int sqlite3_db_release_memory(sqlite3*);
** as heap memory usages approaches the limit.
** ^The soft heap limit is "soft" because even though SQLite strives to stay
** below the limit, it will exceed the limit rather than generate
-** an [SQLITE_NOMEM] error. In other words, the soft heap limit
+** an [SQLITE_NOMEM] error. In other words, the soft heap limit
** is advisory only.
**
** ^The sqlite3_hard_heap_limit64(N) interface sets a hard upper bound of
@@ -7271,7 +7515,7 @@ SQLITE_API SQLITE_DEPRECATED void sqlite3_soft_heap_limit(int N);
** interface returns SQLITE_OK and fills in the non-NULL pointers in
** the final five arguments with appropriate values if the specified
** column exists. ^The sqlite3_table_column_metadata() interface returns
-** SQLITE_ERROR and if the specified column does not exist.
+** SQLITE_ERROR if the specified column does not exist.
** ^If the column-name parameter to sqlite3_table_column_metadata() is a
** NULL pointer, then this routine simply checks for the existence of the
** table and returns SQLITE_OK if the table exists and SQLITE_ERROR if it
@@ -7311,7 +7555,7 @@ SQLITE_API SQLITE_DEPRECATED void sqlite3_soft_heap_limit(int N);
**
** ^If the specified table is actually a view, an [error code] is returned.
**
-** ^If the specified column is "rowid", "oid" or "_rowid_" and the table
+** ^If the specified column is "rowid", "oid" or "_rowid_" and the table
** is not a [WITHOUT ROWID] table and an
** [INTEGER PRIMARY KEY] column has been explicitly declared, then the output
** parameters are set for the explicitly declared column. ^(If there is no
@@ -7377,7 +7621,7 @@ SQLITE_API int sqlite3_table_column_metadata(
** prior to calling this API,
** otherwise an error will be returned.
**
-** Security warning: It is recommended that the
+** Security warning: It is recommended that the
** [SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION] method be used to enable only this
** interface. The use of the [sqlite3_enable_load_extension()] interface
** should be avoided. This will keep the SQL function [load_extension()]
@@ -7413,7 +7657,7 @@ SQLITE_API int sqlite3_load_extension(
** to enable or disable only the C-API.)^
**
** Security warning: It is recommended that extension loading
-** be disabled using the [SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION] method
+** be enabled using the [SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION] method
** rather than this interface, so the [load_extension()] SQL function
** remains disabled. This will prevent SQL injections from giving attackers
** access to extension loading capabilities.
@@ -7464,7 +7708,7 @@ SQLITE_API int sqlite3_auto_extension(void(*xEntryPoint)(void));
** ^The [sqlite3_cancel_auto_extension(X)] interface unregisters the
** initialization routine X that was registered using a prior call to
** [sqlite3_auto_extension(X)]. ^The [sqlite3_cancel_auto_extension(X)]
-** routine returns 1 if initialization routine X was successfully
+** routine returns 1 if initialization routine X was successfully
** unregistered and it returns 0 if X was not on the list of initialization
** routines.
*/
@@ -7499,8 +7743,8 @@ typedef struct sqlite3_module sqlite3_module;
** CAPI3REF: Virtual Table Object
** KEYWORDS: sqlite3_module {virtual table module}
**
-** This structure, sometimes called a "virtual table module",
-** defines the implementation of a [virtual tables].
+** This structure, sometimes called a "virtual table module",
+** defines the implementation of a [virtual table].
** This structure consists mostly of methods for the module.
**
** ^A virtual table module is created by filling in a persistent
@@ -7539,7 +7783,7 @@ struct sqlite3_module {
void (**pxFunc)(sqlite3_context*,int,sqlite3_value**),
void **ppArg);
int (*xRename)(sqlite3_vtab *pVtab, const char *zNew);
- /* The methods above are in version 1 of the sqlite_module object. Those
+ /* The methods above are in version 1 of the sqlite_module object. Those
** below are for version 2 and greater. */
int (*xSavepoint)(sqlite3_vtab *pVTab, int);
int (*xRelease)(sqlite3_vtab *pVTab, int);
@@ -7589,7 +7833,7 @@ struct sqlite3_module {
** required by SQLite. If the table has at least 64 columns and any column
** to the right of the first 63 is required, then bit 63 of colUsed is also
** set. In other words, column iCol may be required if the expression
-** (colUsed & ((sqlite3_uint64)1 << (iCol>=63 ? 63 : iCol))) evaluates to
+** (colUsed & ((sqlite3_uint64)1 << (iCol>=63 ? 63 : iCol))) evaluates to
** non-zero.
**
** The [xBestIndex] method must fill aConstraintUsage[] with information
@@ -7597,7 +7841,13 @@ struct sqlite3_module {
** the right-hand side of the corresponding aConstraint[] is evaluated
** and becomes the argvIndex-th entry in argv. ^(If aConstraintUsage[].omit
** is true, then the constraint is assumed to be fully handled by the
-** virtual table and is not checked again by SQLite.)^
+** virtual table and might not be checked again by the byte code.)^ ^(The
+** aConstraintUsage[].omit flag is an optimization hint. When the omit flag
+** is left in its default setting of false, the constraint will always be
+** checked separately in byte code. If the omit flag is change to true, then
+** the constraint may or may not be checked in byte code. In other words,
+** when the omit flag is true there is no guarantee that the constraint will
+** not be checked again using byte code.)^
**
** ^The idxNum and idxPtr values are recorded and passed into the
** [xFilter] method.
@@ -7610,17 +7860,17 @@ struct sqlite3_module {
**
** ^The estimatedCost value is an estimate of the cost of a particular
** strategy. A cost of N indicates that the cost of the strategy is similar
-** to a linear scan of an SQLite table with N rows. A cost of log(N)
+** to a linear scan of an SQLite table with N rows. A cost of log(N)
** indicates that the expense of the operation is similar to that of a
** binary search on a unique indexed field of an SQLite table with N rows.
**
** ^The estimatedRows value is an estimate of the number of rows that
** will be returned by the strategy.
**
-** The xBestIndex method may optionally populate the idxFlags field with a
+** The xBestIndex method may optionally populate the idxFlags field with a
** mask of SQLITE_INDEX_SCAN_* flags. Currently there is only one such flag -
** SQLITE_INDEX_SCAN_UNIQUE. If the xBestIndex method sets this flag, SQLite
-** assumes that the strategy may visit at most one row.
+** assumes that the strategy may visit at most one row.
**
** Additionally, if xBestIndex sets the SQLITE_INDEX_SCAN_UNIQUE flag, then
** SQLite also assumes that if a call to the xUpdate() method is made as
@@ -7633,14 +7883,14 @@ struct sqlite3_module {
** the xUpdate method are automatically rolled back by SQLite.
**
** IMPORTANT: The estimatedRows field was added to the sqlite3_index_info
-** structure for SQLite [version 3.8.2] ([dateof:3.8.2]).
+** structure for SQLite [version 3.8.2] ([dateof:3.8.2]).
** If a virtual table extension is
-** used with an SQLite version earlier than 3.8.2, the results of attempting
-** to read or write the estimatedRows field are undefined (but are likely
-** to included crashing the application). The estimatedRows field should
+** used with an SQLite version earlier than 3.8.2, the results of attempting
+** to read or write the estimatedRows field are undefined (but are likely
+** to include crashing the application). The estimatedRows field should
** therefore only be used if [sqlite3_libversion_number()] returns a
** value greater than or equal to 3008002. Similarly, the idxFlags field
-** was added for [version 3.9.0] ([dateof:3.9.0]).
+** was added for [version 3.9.0] ([dateof:3.9.0]).
** It may therefore only be used if
** sqlite3_libversion_number() returns a value greater than or equal to
** 3009000.
@@ -7680,7 +7930,7 @@ struct sqlite3_index_info {
/*
** CAPI3REF: Virtual Table Scan Flags
**
-** Virtual table implementations are allowed to set the
+** Virtual table implementations are allowed to set the
** [sqlite3_index_info].idxFlags field to some combination of
** these bits.
*/
@@ -7689,7 +7939,7 @@ struct sqlite3_index_info {
/*
** CAPI3REF: Virtual Table Constraint Operator Codes
**
-** These macros defined the allowed values for the
+** These macros define the allowed values for the
** [sqlite3_index_info].aConstraint[].op field. Each value represents
** an operator that is part of a constraint term in the wHERE clause of
** a query that uses a [virtual table].
@@ -7720,7 +7970,7 @@ struct sqlite3_index_info {
** preexisting [virtual table] for the module.
**
** ^The module name is registered on the [database connection] specified
-** by the first parameter. ^The name of the module is given by the
+** by the first parameter. ^The name of the module is given by the
** second parameter. ^The third parameter is a pointer to
** the implementation of the [virtual table module]. ^The fourth
** parameter is an arbitrary client data pointer that is passed through
@@ -7835,7 +8085,7 @@ SQLITE_API int sqlite3_declare_vtab(sqlite3*, const char *zSQL);
** METHOD: sqlite3
**
** ^(Virtual tables can provide alternative implementations of functions
-** using the [xFindFunction] method of the [virtual table module].
+** using the [xFindFunction] method of the [virtual table module].
** But global versions of those functions
** must exist in order to be overloaded.)^
**
@@ -7886,7 +8136,7 @@ typedef struct sqlite3_blob sqlite3_blob;
** SELECT zColumn FROM zDb.zTable WHERE [rowid] = iRow;
** )^
**
-** ^(Parameter zDb is not the filename that contains the database, but
+** ^(Parameter zDb is not the filename that contains the database, but
** rather the symbolic name of the database. For attached databases, this is
** the name that appears after the AS keyword in the [ATTACH] statement.
** For the main database file, the database name is "main". For TEMP
@@ -7899,28 +8149,28 @@ typedef struct sqlite3_blob sqlite3_blob;
** ^(On success, [SQLITE_OK] is returned and the new [BLOB handle] is stored
** in *ppBlob. Otherwise an [error code] is returned and, unless the error
** code is SQLITE_MISUSE, *ppBlob is set to NULL.)^ ^This means that, provided
-** the API is not misused, it is always safe to call [sqlite3_blob_close()]
+** the API is not misused, it is always safe to call [sqlite3_blob_close()]
** on *ppBlob after this function it returns.
**
** This function fails with SQLITE_ERROR if any of the following are true:
**
-** - ^(Database zDb does not exist)^,
-**
- ^(Table zTable does not exist within database zDb)^,
-**
- ^(Table zTable is a WITHOUT ROWID table)^,
+**
- ^(Database zDb does not exist)^,
+**
- ^(Table zTable does not exist within database zDb)^,
+**
- ^(Table zTable is a WITHOUT ROWID table)^,
**
- ^(Column zColumn does not exist)^,
**
- ^(Row iRow is not present in the table)^,
**
- ^(The specified column of row iRow contains a value that is not
** a TEXT or BLOB value)^,
-**
- ^(Column zColumn is part of an index, PRIMARY KEY or UNIQUE
+**
- ^(Column zColumn is part of an index, PRIMARY KEY or UNIQUE
** constraint and the blob is being opened for read/write access)^,
-**
- ^([foreign key constraints | Foreign key constraints] are enabled,
+**
- ^([foreign key constraints | Foreign key constraints] are enabled,
** column zColumn is part of a [child key] definition and the blob is
** being opened for read/write access)^.
**
**
-** ^Unless it returns SQLITE_MISUSE, this function sets the
-** [database connection] error code and message accessible via
-** [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions.
+** ^Unless it returns SQLITE_MISUSE, this function sets the
+** [database connection] error code and message accessible via
+** [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions.
**
** A BLOB referenced by sqlite3_blob_open() may be read using the
** [sqlite3_blob_read()] interface and modified by using
@@ -7946,7 +8196,7 @@ typedef struct sqlite3_blob sqlite3_blob;
** blob.
**
** ^The [sqlite3_bind_zeroblob()] and [sqlite3_result_zeroblob()] interfaces
-** and the built-in [zeroblob] SQL function may be used to create a
+** and the built-in [zeroblob] SQL function may be used to create a
** zero-filled blob to read or write using the incremental-blob interface.
**
** To avoid a resource leak, every open [BLOB handle] should eventually
@@ -7996,7 +8246,7 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *, sqlite3_int64);
** DESTRUCTOR: sqlite3_blob
**
** ^This function closes an open [BLOB handle]. ^(The BLOB handle is closed
-** unconditionally. Even if this routine returns an error code, the
+** unconditionally. Even if this routine returns an error code, the
** handle is still closed.)^
**
** ^If the blob handle being closed was opened for read-write access, and if
@@ -8006,10 +8256,10 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *, sqlite3_int64);
** code is returned and the transaction rolled back.
**
** Calling this function with an argument that is not a NULL pointer or an
-** open blob handle results in undefined behaviour. ^Calling this routine
-** with a null pointer (such as would be returned by a failed call to
+** open blob handle results in undefined behaviour. ^Calling this routine
+** with a null pointer (such as would be returned by a failed call to
** [sqlite3_blob_open()]) is a harmless no-op. ^Otherwise, if this function
-** is passed a valid open blob handle, the values returned by the
+** is passed a valid open blob handle, the values returned by the
** sqlite3_errcode() and sqlite3_errmsg() functions are set before returning.
*/
SQLITE_API int sqlite3_blob_close(sqlite3_blob *);
@@ -8018,7 +8268,7 @@ SQLITE_API int sqlite3_blob_close(sqlite3_blob *);
** CAPI3REF: Return The Size Of An Open BLOB
** METHOD: sqlite3_blob
**
-** ^Returns the size in bytes of the BLOB accessible via the
+** ^Returns the size in bytes of the BLOB accessible via the
** successfully opened [BLOB handle] in its only argument. ^The
** incremental blob I/O routines can only read or overwriting existing
** blob content; they cannot change the size of a blob.
@@ -8069,9 +8319,9 @@ SQLITE_API int sqlite3_blob_read(sqlite3_blob *, void *Z, int N, int iOffset);
**
** ^(On success, sqlite3_blob_write() returns SQLITE_OK.
** Otherwise, an [error code] or an [extended error code] is returned.)^
-** ^Unless SQLITE_MISUSE is returned, this function sets the
-** [database connection] error code and message accessible via
-** [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions.
+** ^Unless SQLITE_MISUSE is returned, this function sets the
+** [database connection] error code and message accessible via
+** [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions.
**
** ^If the [BLOB handle] passed as the first argument was not opened for
** writing (the flags parameter to [sqlite3_blob_open()] was zero),
@@ -8080,9 +8330,9 @@ SQLITE_API int sqlite3_blob_read(sqlite3_blob *, void *Z, int N, int iOffset);
** This function may only modify the contents of the BLOB; it is
** not possible to increase the size of a BLOB using this API.
** ^If offset iOffset is less than N bytes from the end of the BLOB,
-** [SQLITE_ERROR] is returned and no data is written. The size of the
-** BLOB (and hence the maximum value of N+iOffset) can be determined
-** using the [sqlite3_blob_bytes()] interface. ^If N or iOffset are less
+** [SQLITE_ERROR] is returned and no data is written. The size of the
+** BLOB (and hence the maximum value of N+iOffset) can be determined
+** using the [sqlite3_blob_bytes()] interface. ^If N or iOffset are less
** than zero [SQLITE_ERROR] is returned and no data is written.
**
** ^An attempt to write to an expired [BLOB handle] fails with an
@@ -8176,7 +8426,7 @@ SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs*);
**
** - SQLITE_MUTEX_FAST
**
- SQLITE_MUTEX_RECURSIVE
-**
- SQLITE_MUTEX_STATIC_MASTER
+**
- SQLITE_MUTEX_STATIC_MAIN
**
- SQLITE_MUTEX_STATIC_MEM
**
- SQLITE_MUTEX_STATIC_OPEN
**
- SQLITE_MUTEX_STATIC_PRNG
@@ -8234,7 +8484,7 @@ SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs*);
** ^(Some systems (for example, Windows 95) do not support the operation
** implemented by sqlite3_mutex_try(). On those systems, sqlite3_mutex_try()
** will always return SQLITE_BUSY. The SQLite core only ever uses
-** sqlite3_mutex_try() as an optimization so this is acceptable
+** sqlite3_mutex_try() as an optimization so this is acceptable
** behavior.)^
**
** ^The sqlite3_mutex_leave() routine exits a mutex that was
@@ -8299,7 +8549,7 @@ SQLITE_API void sqlite3_mutex_leave(sqlite3_mutex*);
** The only difference is that the public sqlite3_XXX functions enumerated
** above silently ignore any invocations that pass a NULL pointer instead
** of a valid mutex handle. The implementations of the methods defined
-** by this structure are not required to handle this case, the results
+** by this structure are not required to handle this case. The results
** of passing a NULL pointer instead of a valid mutex handle are undefined
** (i.e. it is acceptable to provide an implementation that segfaults if
** it is passed a NULL pointer).
@@ -8378,7 +8628,7 @@ SQLITE_API int sqlite3_mutex_notheld(sqlite3_mutex*);
*/
#define SQLITE_MUTEX_FAST 0
#define SQLITE_MUTEX_RECURSIVE 1
-#define SQLITE_MUTEX_STATIC_MASTER 2
+#define SQLITE_MUTEX_STATIC_MAIN 2
#define SQLITE_MUTEX_STATIC_MEM 3 /* sqlite3_malloc() */
#define SQLITE_MUTEX_STATIC_MEM2 4 /* NOT USED */
#define SQLITE_MUTEX_STATIC_OPEN 4 /* sqlite3BtreeOpen() */
@@ -8393,11 +8643,15 @@ SQLITE_API int sqlite3_mutex_notheld(sqlite3_mutex*);
#define SQLITE_MUTEX_STATIC_VFS2 12 /* For use by extension VFS */
#define SQLITE_MUTEX_STATIC_VFS3 13 /* For use by application VFS */
+/* Legacy compatibility: */
+#define SQLITE_MUTEX_STATIC_MASTER 2
+
+
/*
** CAPI3REF: Retrieve the mutex for a database connection
** METHOD: sqlite3
**
-** ^This interface returns a pointer the [sqlite3_mutex] object that
+** ^This interface returns a pointer the [sqlite3_mutex] object that
** serializes access to the [database connection] given in the argument
** when the [threading mode] is Serialized.
** ^If the [threading mode] is Single-thread or Multi-thread then this
@@ -8424,7 +8678,7 @@ SQLITE_API sqlite3_mutex *sqlite3_db_mutex(sqlite3*);
** method becomes the return value of this routine.
**
** A few opcodes for [sqlite3_file_control()] are handled directly
-** by the SQLite core and never invoke the
+** by the SQLite core and never invoke the
** sqlite3_io_methods.xFileControl method.
** ^The [SQLITE_FCNTL_FILE_POINTER] value for the op parameter causes
** a pointer to the underlying [sqlite3_file] object to be written into
@@ -8488,7 +8742,7 @@ SQLITE_API int sqlite3_test_control(int op, ...);
#define SQLITE_TESTCTRL_PENDING_BYTE 11
#define SQLITE_TESTCTRL_ASSERT 12
#define SQLITE_TESTCTRL_ALWAYS 13
-#define SQLITE_TESTCTRL_RESERVE 14
+#define SQLITE_TESTCTRL_RESERVE 14 /* NOT USED */
#define SQLITE_TESTCTRL_OPTIMIZATIONS 15
#define SQLITE_TESTCTRL_ISKEYWORD 16 /* NOT USED */
#define SQLITE_TESTCTRL_SCRATCHMALLOC 17 /* NOT USED */
@@ -8511,7 +8765,7 @@ SQLITE_API int sqlite3_test_control(int op, ...);
/*
** CAPI3REF: SQL Keyword Checking
**
-** These routines provide access to the set of SQL language keywords
+** These routines provide access to the set of SQL language keywords
** recognized by SQLite. Applications can uses these routines to determine
** whether or not a specific identifier needs to be escaped (for example,
** by enclosing in double-quotes) so as not to confuse the parser.
@@ -8583,14 +8837,14 @@ typedef struct sqlite3_str sqlite3_str;
**
** ^The [sqlite3_str_new(D)] interface allocates and initializes
** a new [sqlite3_str] object. To avoid memory leaks, the object returned by
-** [sqlite3_str_new()] must be freed by a subsequent call to
+** [sqlite3_str_new()] must be freed by a subsequent call to
** [sqlite3_str_finish(X)].
**
** ^The [sqlite3_str_new(D)] interface always returns a pointer to a
** valid [sqlite3_str] object, though in the event of an out-of-memory
** error the returned object might be a special singleton that will
-** silently reject new text, always return SQLITE_NOMEM from
-** [sqlite3_str_errcode()], always return 0 for
+** silently reject new text, always return SQLITE_NOMEM from
+** [sqlite3_str_errcode()], always return 0 for
** [sqlite3_str_length()], and always return NULL from
** [sqlite3_str_finish(X)]. It is always safe to use the value
** returned by [sqlite3_str_new(D)] as the sqlite3_str parameter
@@ -8626,9 +8880,9 @@ SQLITE_API char *sqlite3_str_finish(sqlite3_str*);
** These interfaces add content to an sqlite3_str object previously obtained
** from [sqlite3_str_new()].
**
-** ^The [sqlite3_str_appendf(X,F,...)] and
+** ^The [sqlite3_str_appendf(X,F,...)] and
** [sqlite3_str_vappendf(X,F,V)] interfaces uses the [built-in printf]
-** functionality of SQLite to append formatted text onto the end of
+** functionality of SQLite to append formatted text onto the end of
** [sqlite3_str] object X.
**
** ^The [sqlite3_str_append(X,S,N)] method appends exactly N bytes from string S
@@ -8645,7 +8899,7 @@ SQLITE_API char *sqlite3_str_finish(sqlite3_str*);
** ^This method can be used, for example, to add whitespace indentation.
**
** ^The [sqlite3_str_reset(X)] method resets the string under construction
-** inside [sqlite3_str] object X back to zero bytes in length.
+** inside [sqlite3_str] object X back to zero bytes in length.
**
** These methods do not return a result code. ^If an error occurs, that fact
** is recorded in the [sqlite3_str] object and can be recovered by a
@@ -8747,7 +9001,7 @@ SQLITE_API int sqlite3_status64(
**
- This parameter records the largest memory allocation request
** handed to [sqlite3_malloc()] or [sqlite3_realloc()] (or their
** internal equivalents). Only the value returned in the
-** *pHighwater parameter to [sqlite3_status()] is of interest.
+** *pHighwater parameter to [sqlite3_status()] is of interest.
** The value written into the *pCurrent parameter is undefined.
)^
**
** [[SQLITE_STATUS_MALLOC_COUNT]] ^(- SQLITE_STATUS_MALLOC_COUNT
@@ -8756,11 +9010,11 @@ SQLITE_API int sqlite3_status64(
**
** [[SQLITE_STATUS_PAGECACHE_USED]] ^(- SQLITE_STATUS_PAGECACHE_USED
** - This parameter returns the number of pages used out of the
-** [pagecache memory allocator] that was configured using
+** [pagecache memory allocator] that was configured using
** [SQLITE_CONFIG_PAGECACHE]. The
** value returned is in pages, not in bytes.
)^
**
-** [[SQLITE_STATUS_PAGECACHE_OVERFLOW]]
+** [[SQLITE_STATUS_PAGECACHE_OVERFLOW]]
** ^(- SQLITE_STATUS_PAGECACHE_OVERFLOW
** - This parameter returns the number of bytes of page cache
** allocation which could not be satisfied by the [SQLITE_CONFIG_PAGECACHE]
@@ -8772,8 +9026,8 @@ SQLITE_API int sqlite3_status64(
**
** [[SQLITE_STATUS_PAGECACHE_SIZE]] ^(
- SQLITE_STATUS_PAGECACHE_SIZE
** - This parameter records the largest memory allocation request
-** handed to [pagecache memory allocator]. Only the value returned in the
-** *pHighwater parameter to [sqlite3_status()] is of interest.
+** handed to the [pagecache memory allocator]. Only the value returned in the
+** *pHighwater parameter to [sqlite3_status()] is of interest.
** The value written into the *pCurrent parameter is undefined.
)^
**
** [[SQLITE_STATUS_SCRATCH_USED]] - SQLITE_STATUS_SCRATCH_USED
@@ -8786,7 +9040,7 @@ SQLITE_API int sqlite3_status64(
** - No longer used.
**
** [[SQLITE_STATUS_PARSER_STACK]] ^(- SQLITE_STATUS_PARSER_STACK
-** - The *pHighwater parameter records the deepest parser stack.
+**
- The *pHighwater parameter records the deepest parser stack.
** The *pCurrent value is undefined. The *pHighwater value is only
** meaningful if SQLite is compiled with [YYTRACKMAXSTACKDEPTH].
)^
**
@@ -8808,12 +9062,12 @@ SQLITE_API int sqlite3_status64(
** CAPI3REF: Database Connection Status
** METHOD: sqlite3
**
-** ^This interface is used to retrieve runtime status information
+** ^This interface is used to retrieve runtime status information
** about a single [database connection]. ^The first argument is the
** database connection object to be interrogated. ^The second argument
** is an integer constant, taken from the set of
** [SQLITE_DBSTATUS options], that
-** determines the parameter to interrogate. The set of
+** determines the parameter to interrogate. The set of
** [SQLITE_DBSTATUS options] is likely
** to grow in future releases of SQLite.
**
@@ -8848,7 +9102,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r
** checked out. )^
**
** [[SQLITE_DBSTATUS_LOOKASIDE_HIT]] ^(- SQLITE_DBSTATUS_LOOKASIDE_HIT
-** - This parameter returns the number malloc attempts that were
+**
- This parameter returns the number of malloc attempts that were
** satisfied using lookaside memory. Only the high-water value is meaningful;
** the current value is always zero.)^
**
@@ -8873,7 +9127,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r
** memory used by all pager caches associated with the database connection.)^
** ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_USED is always 0.
**
-** [[SQLITE_DBSTATUS_CACHE_USED_SHARED]]
+** [[SQLITE_DBSTATUS_CACHE_USED_SHARED]]
** ^(
- SQLITE_DBSTATUS_CACHE_USED_SHARED
** - This parameter is similar to DBSTATUS_CACHE_USED, except that if a
** pager cache is shared between two or more connections the bytes of heap
@@ -8888,7 +9142,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r
** [[SQLITE_DBSTATUS_SCHEMA_USED]] ^(
- SQLITE_DBSTATUS_SCHEMA_USED
** - This parameter returns the approximate number of bytes of heap
** memory used to store the schema for all databases associated
-** with the connection - main, temp, and any [ATTACH]-ed databases.)^
+** with the connection - main, temp, and any [ATTACH]-ed databases.)^
** ^The full amount of memory used by the schemas is reported, even if the
** schema memory is shared with other database connections due to
** [shared cache mode] being enabled.
@@ -8903,13 +9157,13 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r
**
** [[SQLITE_DBSTATUS_CACHE_HIT]] ^(
- SQLITE_DBSTATUS_CACHE_HIT
** - This parameter returns the number of pager cache hits that have
-** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_HIT
+** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_HIT
** is always 0.
**
**
** [[SQLITE_DBSTATUS_CACHE_MISS]] ^(- SQLITE_DBSTATUS_CACHE_MISS
** - This parameter returns the number of pager cache misses that have
-** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_MISS
+** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_MISS
** is always 0.
**
**
@@ -8930,7 +9184,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r
** cache overflowing. Transactions are more efficient if they are written
** to disk all at once. When pages spill mid-transaction, that introduces
** additional overhead. This parameter can be used help identify
-** inefficiencies that can be resolve by increasing the cache size.
+** inefficiencies that can be resolved by increasing the cache size.
**
**
** [[SQLITE_DBSTATUS_DEFERRED_FKS]] ^(- SQLITE_DBSTATUS_DEFERRED_FKS
@@ -8967,7 +9221,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r
** statements. For example, if the number of table steps greatly exceeds
** the number of table searches or result rows, that would tend to indicate
** that the prepared statement is using a full table scan rather than
-** an index.
+** an index.
**
** ^(This interface is used to retrieve and reset counter values from
** a [prepared statement]. The first argument is the prepared statement
@@ -8994,7 +9248,7 @@ SQLITE_API int sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg);
** [[SQLITE_STMTSTATUS_FULLSCAN_STEP]] - SQLITE_STMTSTATUS_FULLSCAN_STEP
** - ^This is the number of times that SQLite has stepped forward in
** a table as part of a full table scan. Large numbers for this counter
-** may indicate opportunities for performance improvement through
+** may indicate opportunities for performance improvement through
** careful use of indices.
**
** [[SQLITE_STMTSTATUS_SORT]] - SQLITE_STMTSTATUS_SORT
@@ -9012,14 +9266,14 @@ SQLITE_API int sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg);
** [[SQLITE_STMTSTATUS_VM_STEP]] - SQLITE_STMTSTATUS_VM_STEP
** - ^This is the number of virtual machine operations executed
** by the prepared statement if that number is less than or equal
-** to 2147483647. The number of virtual machine operations can be
+** to 2147483647. The number of virtual machine operations can be
** used as a proxy for the total work done by the prepared statement.
** If the number of virtual machine operations exceeds 2147483647
** then the value returned by this statement status code is undefined.
**
** [[SQLITE_STMTSTATUS_REPREPARE]]
- SQLITE_STMTSTATUS_REPREPARE
** - ^This is the number of times that the prepare statement has been
-** automatically regenerated due to schema changes or change to
+** automatically regenerated due to schema changes or changes to
** [bound parameters] that might affect the query plan.
**
** [[SQLITE_STMTSTATUS_RUN]]
- SQLITE_STMTSTATUS_RUN
@@ -9079,15 +9333,15 @@ struct sqlite3_pcache_page {
** KEYWORDS: {page cache}
**
** ^(The [sqlite3_config]([SQLITE_CONFIG_PCACHE2], ...) interface can
-** register an alternative page cache implementation by passing in an
+** register an alternative page cache implementation by passing in an
** instance of the sqlite3_pcache_methods2 structure.)^
-** In many applications, most of the heap memory allocated by
+** In many applications, most of the heap memory allocated by
** SQLite is used for the page cache.
-** By implementing a
+** By implementing a
** custom page cache using this API, an application can better control
-** the amount of memory consumed by SQLite, the way in which
-** that memory is allocated and released, and the policies used to
-** determine exactly which parts of a database file are cached and for
+** the amount of memory consumed by SQLite, the way in which
+** that memory is allocated and released, and the policies used to
+** determine exactly which parts of a database file are cached and for
** how long.
**
** The alternative page cache mechanism is an
@@ -9100,19 +9354,19 @@ struct sqlite3_pcache_page {
** [sqlite3_config()] returns.)^
**
** [[the xInit() page cache method]]
-** ^(The xInit() method is called once for each effective
+** ^(The xInit() method is called once for each effective
** call to [sqlite3_initialize()])^
** (usually only once during the lifetime of the process). ^(The xInit()
** method is passed a copy of the sqlite3_pcache_methods2.pArg value.)^
-** The intent of the xInit() method is to set up global data structures
-** required by the custom page cache implementation.
-** ^(If the xInit() method is NULL, then the
+** The intent of the xInit() method is to set up global data structures
+** required by the custom page cache implementation.
+** ^(If the xInit() method is NULL, then the
** built-in default page cache is used instead of the application defined
** page cache.)^
**
** [[the xShutdown() page cache method]]
** ^The xShutdown() method is called by [sqlite3_shutdown()].
-** It can be used to clean up
+** It can be used to clean up
** any outstanding resources before process shutdown, if required.
** ^The xShutdown() method may be NULL.
**
@@ -9131,7 +9385,7 @@ struct sqlite3_pcache_page {
** though this is not guaranteed. ^The
** first parameter, szPage, is the size in bytes of the pages that must
** be allocated by the cache. ^szPage will always a power of two. ^The
-** second parameter szExtra is a number of bytes of extra storage
+** second parameter szExtra is a number of bytes of extra storage
** associated with each page cache entry. ^The szExtra parameter will
** a number less than 250. SQLite will use the
** extra szExtra bytes on each page to store metadata about the underlying
@@ -9144,7 +9398,7 @@ struct sqlite3_pcache_page {
** it is purely advisory. ^On a cache where bPurgeable is false, SQLite will
** never invoke xUnpin() except to deliberately delete a page.
** ^In other words, calls to xUnpin() on a cache with bPurgeable set to
-** false will always have the "discard" flag set to true.
+** false will always have the "discard" flag set to true.
** ^Hence, a cache created with bPurgeable false will
** never contain any unpinned pages.
**
@@ -9159,12 +9413,12 @@ struct sqlite3_pcache_page {
** [[the xPagecount() page cache methods]]
** The xPagecount() method must return the number of pages currently
** stored in the cache, both pinned and unpinned.
-**
+**
** [[the xFetch() page cache methods]]
-** The xFetch() method locates a page in the cache and returns a pointer to
+** The xFetch() method locates a page in the cache and returns a pointer to
** an sqlite3_pcache_page object associated with that page, or a NULL pointer.
** The pBuf element of the returned sqlite3_pcache_page object will be a
-** pointer to a buffer of szPage bytes used to store the content of a
+** pointer to a buffer of szPage bytes used to store the content of a
** single database page. The pExtra element of sqlite3_pcache_page will be
** a pointer to the szExtra bytes of extra storage that SQLite has requested
** for each entry in the page cache.
@@ -9190,7 +9444,7 @@ struct sqlite3_pcache_page {
**
** ^(SQLite will normally invoke xFetch() with a createFlag of 0 or 1. SQLite
** will only use a createFlag of 2 after a prior call with a createFlag of 1
-** failed.)^ In between the to xFetch() calls, SQLite may
+** failed.)^ In between the xFetch() calls, SQLite may
** attempt to unpin one or more cache pages by spilling the content of
** pinned pages to disk and synching the operating system disk cache.
**
@@ -9203,8 +9457,8 @@ struct sqlite3_pcache_page {
** page cache implementation. ^The page cache implementation
** may choose to evict unpinned pages at any time.
**
-** The cache must not perform any reference counting. A single
-** call to xUnpin() unpins the page regardless of the number of prior calls
+** The cache must not perform any reference counting. A single
+** call to xUnpin() unpins the page regardless of the number of prior calls
** to xFetch().
**
** [[the xRekey() page cache methods]]
@@ -9244,7 +9498,7 @@ struct sqlite3_pcache_methods2 {
int (*xPagecount)(sqlite3_pcache*);
sqlite3_pcache_page *(*xFetch)(sqlite3_pcache*, unsigned key, int createFlag);
void (*xUnpin)(sqlite3_pcache*, sqlite3_pcache_page*, int discard);
- void (*xRekey)(sqlite3_pcache*, sqlite3_pcache_page*,
+ void (*xRekey)(sqlite3_pcache*, sqlite3_pcache_page*,
unsigned oldKey, unsigned newKey);
void (*xTruncate)(sqlite3_pcache*, unsigned iLimit);
void (*xDestroy)(sqlite3_pcache*);
@@ -9289,7 +9543,7 @@ typedef struct sqlite3_backup sqlite3_backup;
**
** The backup API copies the content of one database into another.
** It is useful either for creating backups of databases or
-** for copying in-memory databases to or from persistent files.
+** for copying in-memory databases to or from persistent files.
**
** See Also: [Using the SQLite Online Backup API]
**
@@ -9300,36 +9554,36 @@ typedef struct sqlite3_backup sqlite3_backup;
** ^Thus, the backup may be performed on a live source database without
** preventing other database connections from
** reading or writing to the source database while the backup is underway.
-**
-** ^(To perform a backup operation:
+**
+** ^(To perform a backup operation:
**
** - sqlite3_backup_init() is called once to initialize the
-** backup,
-**
- sqlite3_backup_step() is called one or more times to transfer
+** backup,
+**
- sqlite3_backup_step() is called one or more times to transfer
** the data between the two databases, and finally
-**
- sqlite3_backup_finish() is called to release all resources
-** associated with the backup operation.
+**
- sqlite3_backup_finish() is called to release all resources
+** associated with the backup operation.
**
)^
** There should be exactly one call to sqlite3_backup_finish() for each
** successful call to sqlite3_backup_init().
**
** [[sqlite3_backup_init()]] sqlite3_backup_init()
**
-** ^The D and N arguments to sqlite3_backup_init(D,N,S,M) are the
-** [database connection] associated with the destination database
+** ^The D and N arguments to sqlite3_backup_init(D,N,S,M) are the
+** [database connection] associated with the destination database
** and the database name, respectively.
** ^The database name is "main" for the main database, "temp" for the
** temporary database, or the name specified after the AS keyword in
** an [ATTACH] statement for an attached database.
-** ^The S and M arguments passed to
+** ^The S and M arguments passed to
** sqlite3_backup_init(D,N,S,M) identify the [database connection]
** and database name of the source database, respectively.
** ^The source and destination [database connections] (parameters S and D)
** must be different or else sqlite3_backup_init(D,N,S,M) will fail with
** an error.
**
-** ^A call to sqlite3_backup_init() will fail, returning NULL, if
-** there is already a read or read-write transaction open on the
+** ^A call to sqlite3_backup_init() will fail, returning NULL, if
+** there is already a read or read-write transaction open on the
** destination database.
**
** ^If an error occurs within sqlite3_backup_init(D,N,S,M), then NULL is
@@ -9341,14 +9595,14 @@ typedef struct sqlite3_backup sqlite3_backup;
** ^A successful call to sqlite3_backup_init() returns a pointer to an
** [sqlite3_backup] object.
** ^The [sqlite3_backup] object may be used with the sqlite3_backup_step() and
-** sqlite3_backup_finish() functions to perform the specified backup
+** sqlite3_backup_finish() functions to perform the specified backup
** operation.
**
** [[sqlite3_backup_step()]] sqlite3_backup_step()
**
-** ^Function sqlite3_backup_step(B,N) will copy up to N pages between
+** ^Function sqlite3_backup_step(B,N) will copy up to N pages between
** the source and destination databases specified by [sqlite3_backup] object B.
-** ^If N is negative, all remaining source pages are copied.
+** ^If N is negative, all remaining source pages are copied.
** ^If sqlite3_backup_step(B,N) successfully copies N pages and there
** are still more pages to be copied, then the function returns [SQLITE_OK].
** ^If sqlite3_backup_step(B,N) successfully finishes copying all pages
@@ -9370,8 +9624,8 @@ typedef struct sqlite3_backup sqlite3_backup;
**
** ^If sqlite3_backup_step() cannot obtain a required file-system lock, then
** the [sqlite3_busy_handler | busy-handler function]
-** is invoked (if one is specified). ^If the
-** busy-handler returns non-zero before the lock is available, then
+** is invoked (if one is specified). ^If the
+** busy-handler returns non-zero before the lock is available, then
** [SQLITE_BUSY] is returned to the caller. ^In this case the call to
** sqlite3_backup_step() can be retried later. ^If the source
** [database connection]
@@ -9379,15 +9633,15 @@ typedef struct sqlite3_backup sqlite3_backup;
** is called, then [SQLITE_LOCKED] is returned immediately. ^Again, in this
** case the call to sqlite3_backup_step() can be retried later on. ^(If
** [SQLITE_IOERR_ACCESS | SQLITE_IOERR_XXX], [SQLITE_NOMEM], or
-** [SQLITE_READONLY] is returned, then
-** there is no point in retrying the call to sqlite3_backup_step(). These
-** errors are considered fatal.)^ The application must accept
-** that the backup operation has failed and pass the backup operation handle
+** [SQLITE_READONLY] is returned, then
+** there is no point in retrying the call to sqlite3_backup_step(). These
+** errors are considered fatal.)^ The application must accept
+** that the backup operation has failed and pass the backup operation handle
** to the sqlite3_backup_finish() to release associated resources.
**
** ^The first call to sqlite3_backup_step() obtains an exclusive lock
-** on the destination file. ^The exclusive lock is not released until either
-** sqlite3_backup_finish() is called or the backup operation is complete
+** on the destination file. ^The exclusive lock is not released until either
+** sqlite3_backup_finish() is called or the backup operation is complete
** and sqlite3_backup_step() returns [SQLITE_DONE]. ^Every call to
** sqlite3_backup_step() obtains a [shared lock] on the source database that
** lasts for the duration of the sqlite3_backup_step() call.
@@ -9396,18 +9650,18 @@ typedef struct sqlite3_backup sqlite3_backup;
** through the backup process. ^If the source database is modified by an
** external process or via a database connection other than the one being
** used by the backup operation, then the backup will be automatically
-** restarted by the next call to sqlite3_backup_step(). ^If the source
+** restarted by the next call to sqlite3_backup_step(). ^If the source
** database is modified by the using the same database connection as is used
** by the backup operation, then the backup database is automatically
** updated at the same time.
**
** [[sqlite3_backup_finish()]] sqlite3_backup_finish()
**
-** When sqlite3_backup_step() has returned [SQLITE_DONE], or when the
+** When sqlite3_backup_step() has returned [SQLITE_DONE], or when the
** application wishes to abandon the backup operation, the application
** should destroy the [sqlite3_backup] by passing it to sqlite3_backup_finish().
** ^The sqlite3_backup_finish() interfaces releases all
-** resources associated with the [sqlite3_backup] object.
+** resources associated with the [sqlite3_backup] object.
** ^If sqlite3_backup_step() has not yet returned [SQLITE_DONE], then any
** active write-transaction on the destination database is rolled back.
** The [sqlite3_backup] object is invalid
@@ -9447,8 +9701,8 @@ typedef struct sqlite3_backup sqlite3_backup;
** connections, then the source database connection may be used concurrently
** from within other threads.
**
-** However, the application must guarantee that the destination
-** [database connection] is not passed to any other API (by any thread) after
+** However, the application must guarantee that the destination
+** [database connection] is not passed to any other API (by any thread) after
** sqlite3_backup_init() is called and before the corresponding call to
** sqlite3_backup_finish(). SQLite does not currently check to see
** if the application incorrectly accesses the destination [database connection]
@@ -9459,11 +9713,11 @@ typedef struct sqlite3_backup sqlite3_backup;
** If running in [shared cache mode], the application must
** guarantee that the shared cache used by the destination database
** is not accessed while the backup is running. In practice this means
-** that the application must guarantee that the disk file being
+** that the application must guarantee that the disk file being
** backed up to is not accessed by any connection within the process,
** not just the specific connection that was passed to sqlite3_backup_init().
**
-** The [sqlite3_backup] object itself is partially threadsafe. Multiple
+** The [sqlite3_backup] object itself is partially threadsafe. Multiple
** threads may safely make multiple concurrent calls to sqlite3_backup_step().
** However, the sqlite3_backup_remaining() and sqlite3_backup_pagecount()
** APIs are not strictly speaking threadsafe. If they are invoked at the
@@ -9488,8 +9742,8 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p);
** ^When running in shared-cache mode, a database operation may fail with
** an [SQLITE_LOCKED] error if the required locks on the shared-cache or
** individual tables within the shared-cache cannot be obtained. See
-** [SQLite Shared-Cache Mode] for a description of shared-cache locking.
-** ^This API may be used to register a callback that SQLite will invoke
+** [SQLite Shared-Cache Mode] for a description of shared-cache locking.
+** ^This API may be used to register a callback that SQLite will invoke
** when the connection currently holding the required lock relinquishes it.
** ^This API is only available if the library was compiled with the
** [SQLITE_ENABLE_UNLOCK_NOTIFY] C-preprocessor symbol defined.
@@ -9497,18 +9751,18 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p);
** See Also: [Using the SQLite Unlock Notification Feature].
**
** ^Shared-cache locks are released when a database connection concludes
-** its current transaction, either by committing it or rolling it back.
+** its current transaction, either by committing it or rolling it back.
**
** ^When a connection (known as the blocked connection) fails to obtain a
** shared-cache lock and SQLITE_LOCKED is returned to the caller, the
** identity of the database connection (the blocking connection) that
-** has locked the required resource is stored internally. ^After an
+** has locked the required resource is stored internally. ^After an
** application receives an SQLITE_LOCKED error, it may call the
-** sqlite3_unlock_notify() method with the blocked connection handle as
+** sqlite3_unlock_notify() method with the blocked connection handle as
** the first argument to register for a callback that will be invoked
** when the blocking connections current transaction is concluded. ^The
** callback is invoked from within the [sqlite3_step] or [sqlite3_close]
-** call that concludes the blocking connections transaction.
+** call that concludes the blocking connection's transaction.
**
** ^(If sqlite3_unlock_notify() is called in a multi-threaded application,
** there is a chance that the blocking connection will have already
@@ -9518,15 +9772,15 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p);
**
** ^If the blocked connection is attempting to obtain a write-lock on a
** shared-cache table, and more than one other connection currently holds
-** a read-lock on the same table, then SQLite arbitrarily selects one of
+** a read-lock on the same table, then SQLite arbitrarily selects one of
** the other connections to use as the blocking connection.
**
-** ^(There may be at most one unlock-notify callback registered by a
+** ^(There may be at most one unlock-notify callback registered by a
** blocked connection. If sqlite3_unlock_notify() is called when the
** blocked connection already has a registered unlock-notify callback,
** then the new callback replaces the old.)^ ^If sqlite3_unlock_notify() is
** called with a NULL pointer as its second argument, then any existing
-** unlock-notify callback is canceled. ^The blocked connections
+** unlock-notify callback is canceled. ^The blocked connections
** unlock-notify callback may also be canceled by closing the blocked
** connection using [sqlite3_close()].
**
@@ -9539,25 +9793,25 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p);
**
** Callback Invocation Details
**
-** When an unlock-notify callback is registered, the application provides a
+** When an unlock-notify callback is registered, the application provides a
** single void* pointer that is passed to the callback when it is invoked.
** However, the signature of the callback function allows SQLite to pass
** it an array of void* context pointers. The first argument passed to
** an unlock-notify callback is a pointer to an array of void* pointers,
** and the second is the number of entries in the array.
**
-** When a blocking connections transaction is concluded, there may be
+** When a blocking connection's transaction is concluded, there may be
** more than one blocked connection that has registered for an unlock-notify
** callback. ^If two or more such blocked connections have specified the
** same callback function, then instead of invoking the callback function
** multiple times, it is invoked once with the set of void* context pointers
** specified by the blocked connections bundled together into an array.
-** This gives the application an opportunity to prioritize any actions
+** This gives the application an opportunity to prioritize any actions
** related to the set of unblocked database connections.
**
** Deadlock Detection
**
-** Assuming that after registering for an unlock-notify callback a
+** Assuming that after registering for an unlock-notify callback a
** database waits for the callback to be issued before taking any further
** action (a reasonable assumption), then using this API may cause the
** application to deadlock. For example, if connection X is waiting for
@@ -9580,7 +9834,7 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p);
**
** The "DROP TABLE" Exception
**
-** When a call to [sqlite3_step()] returns SQLITE_LOCKED, it is almost
+** When a call to [sqlite3_step()] returns SQLITE_LOCKED, it is almost
** always appropriate to call sqlite3_unlock_notify(). There is however,
** one exception. When executing a "DROP TABLE" or "DROP INDEX" statement,
** SQLite checks if there are any currently executing SELECT statements
@@ -9593,7 +9847,7 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p);
** One way around this problem is to check the extended error code returned
** by an sqlite3_step() call. ^(If there is a blocking connection, then the
** extended error code is set to SQLITE_LOCKED_SHAREDCACHE. Otherwise, in
-** the special "DROP TABLE/INDEX" case, the extended error code is just
+** the special "DROP TABLE/INDEX" case, the extended error code is just
** SQLITE_LOCKED.)^
*/
SQLITE_API int sqlite3_unlock_notify(
@@ -9684,8 +9938,8 @@ SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...);
** ^The [sqlite3_wal_hook()] function is used to register a callback that
** is invoked each time data is committed to a database in wal mode.
**
-** ^(The callback is invoked by SQLite after the commit has taken place and
-** the associated write-lock on the database released)^, so the implementation
+** ^(The callback is invoked by SQLite after the commit has taken place and
+** the associated write-lock on the database released)^, so the implementation
** may read, write or [checkpoint] the database as required.
**
** ^The first parameter passed to the callback function when it is invoked
@@ -9704,7 +9958,7 @@ SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...);
** that does not correspond to any valid SQLite error code, the results
** are undefined.
**
-** A single database handle may have at most a single write-ahead log callback
+** A single database handle may have at most a single write-ahead log callback
** registered at one time. ^Calling [sqlite3_wal_hook()] replaces any
** previously registered write-ahead log callback. ^Note that the
** [sqlite3_wal_autocheckpoint()] interface and the
@@ -9712,7 +9966,7 @@ SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...);
** overwrite any prior [sqlite3_wal_hook()] settings.
*/
SQLITE_API void *sqlite3_wal_hook(
- sqlite3*,
+ sqlite3*,
int(*)(void *,sqlite3*,const char*,int),
void*
);
@@ -9725,7 +9979,7 @@ SQLITE_API void *sqlite3_wal_hook(
** [sqlite3_wal_hook()] that causes any database on [database connection] D
** to automatically [checkpoint]
** after committing a transaction if there are N or
-** more frames in the [write-ahead log] file. ^Passing zero or
+** more frames in the [write-ahead log] file. ^Passing zero or
** a negative value as the nFrame parameter disables automatic
** checkpoints entirely.
**
@@ -9755,7 +10009,7 @@ SQLITE_API int sqlite3_wal_autocheckpoint(sqlite3 *db, int N);
** ^(The sqlite3_wal_checkpoint(D,X) is equivalent to
** [sqlite3_wal_checkpoint_v2](D,X,[SQLITE_CHECKPOINT_PASSIVE],0,0).)^
**
-** In brief, sqlite3_wal_checkpoint(D,X) causes the content in the
+** In brief, sqlite3_wal_checkpoint(D,X) causes the content in the
** [write-ahead log] for database X on [database connection] D to be
** transferred into the database file and for the write-ahead log to
** be reset. See the [checkpointing] documentation for addition
@@ -9781,10 +10035,10 @@ SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb);
**
**
** - SQLITE_CHECKPOINT_PASSIVE
-
-** ^Checkpoint as many frames as possible without waiting for any database
-** readers or writers to finish, then sync the database file if all frames
+** ^Checkpoint as many frames as possible without waiting for any database
+** readers or writers to finish, then sync the database file if all frames
** in the log were checkpointed. ^The [busy-handler callback]
-** is never invoked in the SQLITE_CHECKPOINT_PASSIVE mode.
+** is never invoked in the SQLITE_CHECKPOINT_PASSIVE mode.
** ^On the other hand, passive mode might leave the checkpoint unfinished
** if there are concurrent readers or writers.
**
@@ -9798,9 +10052,9 @@ SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb);
**
**
- SQLITE_CHECKPOINT_RESTART
-
** ^This mode works the same way as SQLITE_CHECKPOINT_FULL with the addition
-** that after checkpointing the log file it blocks (calls the
+** that after checkpointing the log file it blocks (calls the
** [busy-handler callback])
-** until all readers are reading from the database file only. ^This ensures
+** until all readers are reading from the database file only. ^This ensures
** that the next writer will restart the log file from the beginning.
** ^Like SQLITE_CHECKPOINT_FULL, this mode blocks new
** database writer attempts while it is pending, but does not impede readers.
@@ -9822,31 +10076,31 @@ SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb);
** truncated to zero bytes and so both *pnLog and *pnCkpt will be set to zero.
**
** ^All calls obtain an exclusive "checkpoint" lock on the database file. ^If
-** any other process is running a checkpoint operation at the same time, the
-** lock cannot be obtained and SQLITE_BUSY is returned. ^Even if there is a
+** any other process is running a checkpoint operation at the same time, the
+** lock cannot be obtained and SQLITE_BUSY is returned. ^Even if there is a
** busy-handler configured, it will not be invoked in this case.
**
-** ^The SQLITE_CHECKPOINT_FULL, RESTART and TRUNCATE modes also obtain the
+** ^The SQLITE_CHECKPOINT_FULL, RESTART and TRUNCATE modes also obtain the
** exclusive "writer" lock on the database file. ^If the writer lock cannot be
** obtained immediately, and a busy-handler is configured, it is invoked and
** the writer lock retried until either the busy-handler returns 0 or the lock
** is successfully obtained. ^The busy-handler is also invoked while waiting for
** database readers as described above. ^If the busy-handler returns 0 before
** the writer lock is obtained or while waiting for database readers, the
-** checkpoint operation proceeds from that point in the same way as
-** SQLITE_CHECKPOINT_PASSIVE - checkpointing as many frames as possible
+** checkpoint operation proceeds from that point in the same way as
+** SQLITE_CHECKPOINT_PASSIVE - checkpointing as many frames as possible
** without blocking any further. ^SQLITE_BUSY is returned in this case.
**
** ^If parameter zDb is NULL or points to a zero length string, then the
-** specified operation is attempted on all WAL databases [attached] to
+** specified operation is attempted on all WAL databases [attached] to
** [database connection] db. In this case the
-** values written to output parameters *pnLog and *pnCkpt are undefined. ^If
-** an SQLITE_BUSY error is encountered when processing one or more of the
-** attached WAL databases, the operation is still attempted on any remaining
-** attached databases and SQLITE_BUSY is returned at the end. ^If any other
-** error occurs while processing an attached database, processing is abandoned
-** and the error code is returned to the caller immediately. ^If no error
-** (SQLITE_BUSY or otherwise) is encountered while processing the attached
+** values written to output parameters *pnLog and *pnCkpt are undefined. ^If
+** an SQLITE_BUSY error is encountered when processing one or more of the
+** attached WAL databases, the operation is still attempted on any remaining
+** attached databases and SQLITE_BUSY is returned at the end. ^If any other
+** error occurs while processing an attached database, processing is abandoned
+** and the error code is returned to the caller immediately. ^If no error
+** (SQLITE_BUSY or otherwise) is encountered while processing the attached
** databases, SQLITE_OK is returned.
**
** ^If database zDb is the name of an attached database that is not in WAL
@@ -9894,14 +10148,20 @@ SQLITE_API int sqlite3_wal_checkpoint_v2(
** If this interface is invoked outside the context of an xConnect or
** xCreate virtual table method then the behavior is undefined.
**
-** At present, there is only one option that may be configured using
-** this function. (See [SQLITE_VTAB_CONSTRAINT_SUPPORT].) Further options
-** may be added in the future.
+** In the call sqlite3_vtab_config(D,C,...) the D parameter is the
+** [database connection] in which the virtual table is being created and
+** which is passed in as the first argument to the [xConnect] or [xCreate]
+** method that is invoking sqlite3_vtab_config(). The C parameter is one
+** of the [virtual table configuration options]. The presence and meaning
+** of parameters after C depend on which [virtual table configuration option]
+** is used.
*/
SQLITE_API int sqlite3_vtab_config(sqlite3*, int op, ...);
/*
** CAPI3REF: Virtual Table Configuration Options
+** KEYWORDS: {virtual table configuration options}
+** KEYWORDS: {virtual table configuration option}
**
** These macros define the various options to the
** [sqlite3_vtab_config()] interface that [virtual table] implementations
@@ -9909,7 +10169,7 @@ SQLITE_API int sqlite3_vtab_config(sqlite3*, int op, ...);
**
**
** [[SQLITE_VTAB_CONSTRAINT_SUPPORT]]
-** - SQLITE_VTAB_CONSTRAINT_SUPPORT
+**
- SQLITE_VTAB_CONSTRAINT_SUPPORT
** - Calls of the form
** [sqlite3_vtab_config](db,SQLITE_VTAB_CONSTRAINT_SUPPORT,X) are supported,
** where X is an integer. If X is zero, then the [virtual table] whose
@@ -9923,24 +10183,46 @@ SQLITE_API int sqlite3_vtab_config(sqlite3*, int op, ...);
** If X is non-zero, then the virtual table implementation guarantees
** that if [xUpdate] returns [SQLITE_CONSTRAINT], it will do so before
** any modifications to internal or persistent data structures have been made.
-** If the [ON CONFLICT] mode is ABORT, FAIL, IGNORE or ROLLBACK, SQLite
+** If the [ON CONFLICT] mode is ABORT, FAIL, IGNORE or ROLLBACK, SQLite
** is able to roll back a statement or database transaction, and abandon
-** or continue processing the current SQL statement as appropriate.
+** or continue processing the current SQL statement as appropriate.
** If the ON CONFLICT mode is REPLACE and the [xUpdate] method returns
** [SQLITE_CONSTRAINT], SQLite handles this as if the ON CONFLICT mode
** had been ABORT.
**
** Virtual table implementations that are required to handle OR REPLACE
-** must do so within the [xUpdate] method. If a call to the
-** [sqlite3_vtab_on_conflict()] function indicates that the current ON
-** CONFLICT policy is REPLACE, the virtual table implementation should
+** must do so within the [xUpdate] method. If a call to the
+** [sqlite3_vtab_on_conflict()] function indicates that the current ON
+** CONFLICT policy is REPLACE, the virtual table implementation should
** silently replace the appropriate rows within the xUpdate callback and
** return SQLITE_OK. Or, if this is not possible, it may return
-** SQLITE_CONSTRAINT, in which case SQLite falls back to OR ABORT
+** SQLITE_CONSTRAINT, in which case SQLite falls back to OR ABORT
** constraint handling.
+**
+**
+** [[SQLITE_VTAB_DIRECTONLY]]- SQLITE_VTAB_DIRECTONLY
+** - Calls of the form
+** [sqlite3_vtab_config](db,SQLITE_VTAB_DIRECTONLY) from within the
+** the [xConnect] or [xCreate] methods of a [virtual table] implmentation
+** prohibits that virtual table from being used from within triggers and
+** views.
+**
+**
+** [[SQLITE_VTAB_INNOCUOUS]]- SQLITE_VTAB_INNOCUOUS
+** - Calls of the form
+** [sqlite3_vtab_config](db,SQLITE_VTAB_INNOCUOUS) from within the
+** the [xConnect] or [xCreate] methods of a [virtual table] implmentation
+** identify that virtual table as being safe to use from within triggers
+** and views. Conceptually, the SQLITE_VTAB_INNOCUOUS tag means that the
+** virtual table can do no serious harm even if it is controlled by a
+** malicious hacker. Developers should avoid setting the SQLITE_VTAB_INNOCUOUS
+** flag unless absolutely necessary.
+**
**
*/
#define SQLITE_VTAB_CONSTRAINT_SUPPORT 1
+#define SQLITE_VTAB_INNOCUOUS 2
+#define SQLITE_VTAB_DIRECTONLY 3
/*
** CAPI3REF: Determine The Virtual Table Conflict Policy
@@ -9977,12 +10259,12 @@ SQLITE_API int sqlite3_vtab_nochange(sqlite3_context*);
** CAPI3REF: Determine The Collation For a Virtual Table Constraint
**
** This function may only be called from within a call to the [xBestIndex]
-** method of a [virtual table].
+** method of a [virtual table].
**
** The first argument must be the sqlite3_index_info object that is the
** first parameter to the xBestIndex() method. The second argument must be
** an index into the aConstraint[] array belonging to the sqlite3_index_info
-** structure passed to xBestIndex. This function returns a pointer to a buffer
+** structure passed to xBestIndex. This function returns a pointer to a buffer
** containing the name of the collation sequence for the corresponding
** constraint.
*/
@@ -10020,15 +10302,15 @@ SQLITE_API SQLITE_EXPERIMENTAL const char *sqlite3_vtab_collation(sqlite3_index_
**
**
** [[SQLITE_SCANSTAT_NLOOP]] - SQLITE_SCANSTAT_NLOOP
-** - ^The [sqlite3_int64] variable pointed to by the T parameter will be
+**
- ^The [sqlite3_int64] variable pointed to by the V parameter will be
** set to the total number of times that the X-th loop has run.
**
** [[SQLITE_SCANSTAT_NVISIT]] - SQLITE_SCANSTAT_NVISIT
-** - ^The [sqlite3_int64] variable pointed to by the T parameter will be set
+**
- ^The [sqlite3_int64] variable pointed to by the V parameter will be set
** to the total number of rows examined by all iterations of the X-th loop.
**
** [[SQLITE_SCANSTAT_EST]] - SQLITE_SCANSTAT_EST
-** - ^The "double" variable pointed to by the T parameter will be set to the
+**
- ^The "double" variable pointed to by the V parameter will be set to the
** query planner's estimate for the average number of rows output from each
** iteration of the X-th loop. If the query planner's estimates was accurate,
** then this value will approximate the quotient NVISIT/NLOOP and the
@@ -10036,17 +10318,17 @@ SQLITE_API SQLITE_EXPERIMENTAL const char *sqlite3_vtab_collation(sqlite3_index_
** be the NLOOP value for the current loop.
**
** [[SQLITE_SCANSTAT_NAME]]
- SQLITE_SCANSTAT_NAME
-** - ^The "const char *" variable pointed to by the T parameter will be set
+**
- ^The "const char *" variable pointed to by the V parameter will be set
** to a zero-terminated UTF-8 string containing the name of the index or table
** used for the X-th loop.
**
** [[SQLITE_SCANSTAT_EXPLAIN]]
- SQLITE_SCANSTAT_EXPLAIN
-** - ^The "const char *" variable pointed to by the T parameter will be set
+**
- ^The "const char *" variable pointed to by the V parameter will be set
** to a zero-terminated UTF-8 string containing the [EXPLAIN QUERY PLAN]
** description for the X-th loop.
**
** [[SQLITE_SCANSTAT_SELECTID]]
- SQLITE_SCANSTAT_SELECT
-** - ^The "int" variable pointed to by the T parameter will be set to the
+**
- ^The "int" variable pointed to by the V parameter will be set to the
** "select-id" for the X-th loop. The select-id identifies which query or
** subquery the loop is part of. The main query has a select-id of zero.
** The select-id is the same value as is output in the first column
@@ -10096,7 +10378,7 @@ SQLITE_API int sqlite3_stmt_scanstatus(
int idx, /* Index of loop to report on */
int iScanStatusOp, /* Information desired. SQLITE_SCANSTAT_* */
void *pOut /* Result written here */
-);
+);
/*
** CAPI3REF: Zero Scan-Status Counters
@@ -10114,15 +10396,15 @@ SQLITE_API void sqlite3_stmt_scanstatus_reset(sqlite3_stmt*);
**
** ^If a write-transaction is open on [database connection] D when the
** [sqlite3_db_cacheflush(D)] interface invoked, any dirty
-** pages in the pager-cache that are not currently in use are written out
+** pages in the pager-cache that are not currently in use are written out
** to disk. A dirty page may be in use if a database cursor created by an
** active SQL statement is reading from it, or if it is page 1 of a database
** file (page 1 is always "in use"). ^The [sqlite3_db_cacheflush(D)]
** interface flushes caches for all schemas - "main", "temp", and
** any [attached] databases.
**
-** ^If this function needs to obtain extra database locks before dirty pages
-** can be flushed to disk, it does so. ^If those locks cannot be obtained
+** ^If this function needs to obtain extra database locks before dirty pages
+** can be flushed to disk, it does so. ^If those locks cannot be obtained
** immediately and there is a busy-handler callback configured, it is invoked
** in the usual manner. ^If the required lock still cannot be obtained, then
** the database is skipped and an attempt made to flush any dirty pages
@@ -10160,7 +10442,7 @@ SQLITE_API int sqlite3_db_cacheflush(sqlite3*);
**
** ^The preupdate hook only fires for changes to real database tables; the
** preupdate hook is not invoked for changes to [virtual tables] or to
-** system tables like sqlite_master or sqlite_stat1.
+** system tables like sqlite_sequence or sqlite_stat1.
**
** ^The second parameter to the preupdate callback is a pointer to
** the [database connection] that registered the preupdate hook.
@@ -10169,16 +10451,16 @@ SQLITE_API int sqlite3_db_cacheflush(sqlite3*);
** kind of update operation that is about to occur.
** ^(The fourth parameter to the preupdate callback is the name of the
** database within the database connection that is being modified. This
-** will be "main" for the main database or "temp" for TEMP tables or
+** will be "main" for the main database or "temp" for TEMP tables or
** the name given after the AS keyword in the [ATTACH] statement for attached
** databases.)^
** ^The fifth parameter to the preupdate callback is the name of the
** table that is being modified.
**
** For an UPDATE or DELETE operation on a [rowid table], the sixth
-** parameter passed to the preupdate callback is the initial [rowid] of the
+** parameter passed to the preupdate callback is the initial [rowid] of the
** row being modified or deleted. For an INSERT operation on a rowid table,
-** or any operation on a WITHOUT ROWID table, the value of the sixth
+** or any operation on a WITHOUT ROWID table, the value of the sixth
** parameter is undefined. For an INSERT or UPDATE on a rowid table the
** seventh parameter is the final rowid value of the row being inserted
** or updated. The value of the seventh parameter passed to the callback
@@ -10217,7 +10499,7 @@ SQLITE_API int sqlite3_db_cacheflush(sqlite3*);
**
** ^The [sqlite3_preupdate_depth(D)] interface returns 0 if the preupdate
** callback was invoked as a result of a direct insert, update, or delete
-** operation; or 1 for inserts, updates, or deletes invoked by top-level
+** operation; or 1 for inserts, updates, or deletes invoked by top-level
** triggers; or 2 for changes resulting from triggers called by top-level
** triggers; and so forth.
**
@@ -10251,7 +10533,7 @@ SQLITE_API int sqlite3_preupdate_new(sqlite3 *, int, sqlite3_value **);
** The return value is OS-dependent. For example, on unix systems, after
** [sqlite3_open_v2()] returns [SQLITE_CANTOPEN], this interface could be
** called to get back the underlying "errno" that caused the problem, such
-** as ENOSPC, EAUTH, EISDIR, and so forth.
+** as ENOSPC, EAUTH, EISDIR, and so forth.
*/
SQLITE_API int sqlite3_system_errno(sqlite3*);
@@ -10289,12 +10571,12 @@ typedef struct sqlite3_snapshot {
** [sqlite3_snapshot_get(D,S,P)] interface writes a pointer to the newly
** created [sqlite3_snapshot] object into *P and returns SQLITE_OK.
** If there is not already a read-transaction open on schema S when
-** this function is called, one is opened automatically.
+** this function is called, one is opened automatically.
**
** The following must be true for this function to succeed. If any of
** the following statements are false when sqlite3_snapshot_get() is
** called, SQLITE_ERROR is returned. The final value of *P is undefined
-** in this case.
+** in this case.
**
**
** - The database handle must not be in [autocommit mode].
@@ -10306,13 +10588,13 @@ typedef struct sqlite3_snapshot {
**
**
- One or more transactions must have been written to the current wal
** file since it was created on disk (by any connection). This means
-** that a snapshot cannot be taken on a wal mode database with no wal
+** that a snapshot cannot be taken on a wal mode database with no wal
** file immediately after it is first opened. At least one transaction
** must be written to it first.
**
**
** This function may also return SQLITE_NOMEM. If it is called with the
-** database handle in autocommit mode but fails for some other reason,
+** database handle in autocommit mode but fails for some other reason,
** whether or not a read transaction is opened on schema S is undefined.
**
** The [sqlite3_snapshot] object returned from a successful call to
@@ -10332,38 +10614,38 @@ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_get(
** CAPI3REF: Start a read transaction on an historical snapshot
** METHOD: sqlite3_snapshot
**
-** ^The [sqlite3_snapshot_open(D,S,P)] interface either starts a new read
-** transaction or upgrades an existing one for schema S of
-** [database connection] D such that the read transaction refers to
-** historical [snapshot] P, rather than the most recent change to the
-** database. ^The [sqlite3_snapshot_open()] interface returns SQLITE_OK
+** ^The [sqlite3_snapshot_open(D,S,P)] interface either starts a new read
+** transaction or upgrades an existing one for schema S of
+** [database connection] D such that the read transaction refers to
+** historical [snapshot] P, rather than the most recent change to the
+** database. ^The [sqlite3_snapshot_open()] interface returns SQLITE_OK
** on success or an appropriate [error code] if it fails.
**
-** ^In order to succeed, the database connection must not be in
+** ^In order to succeed, the database connection must not be in
** [autocommit mode] when [sqlite3_snapshot_open(D,S,P)] is called. If there
** is already a read transaction open on schema S, then the database handle
** must have no active statements (SELECT statements that have been passed
-** to sqlite3_step() but not sqlite3_reset() or sqlite3_finalize()).
+** to sqlite3_step() but not sqlite3_reset() or sqlite3_finalize()).
** SQLITE_ERROR is returned if either of these conditions is violated, or
** if schema S does not exist, or if the snapshot object is invalid.
**
** ^A call to sqlite3_snapshot_open() will fail to open if the specified
-** snapshot has been overwritten by a [checkpoint]. In this case
+** snapshot has been overwritten by a [checkpoint]. In this case
** SQLITE_ERROR_SNAPSHOT is returned.
**
-** If there is already a read transaction open when this function is
+** If there is already a read transaction open when this function is
** invoked, then the same read transaction remains open (on the same
** database snapshot) if SQLITE_ERROR, SQLITE_BUSY or SQLITE_ERROR_SNAPSHOT
** is returned. If another error code - for example SQLITE_PROTOCOL or an
** SQLITE_IOERR error code - is returned, then the final state of the
-** read transaction is undefined. If SQLITE_OK is returned, then the
+** read transaction is undefined. If SQLITE_OK is returned, then the
** read transaction is now open on database snapshot P.
**
** ^(A call to [sqlite3_snapshot_open(D,S,P)] will fail if the
** database connection D does not know that the database file for
** schema S is in [WAL mode]. A database connection might not know
** that the database file is in [WAL mode] if there has been no prior
-** I/O on that database connection, or if the database entered [WAL mode]
+** I/O on that database connection, or if the database entered [WAL mode]
** after the most recent I/O on the database connection.)^
** (Hint: Run "[PRAGMA application_id]" against a newly opened
** database connection in order to make it ready to use snapshots.)
@@ -10395,17 +10677,17 @@ SQLITE_API SQLITE_EXPERIMENTAL void sqlite3_snapshot_free(sqlite3_snapshot*);
** METHOD: sqlite3_snapshot
**
** The sqlite3_snapshot_cmp(P1, P2) interface is used to compare the ages
-** of two valid snapshot handles.
+** of two valid snapshot handles.
**
-** If the two snapshot handles are not associated with the same database
-** file, the result of the comparison is undefined.
+** If the two snapshot handles are not associated with the same database
+** file, the result of the comparison is undefined.
**
** Additionally, the result of the comparison is only valid if both of the
** snapshot handles were obtained by calling sqlite3_snapshot_get() since the
** last time the wal file was deleted. The wal file is deleted when the
** database is changed back to rollback mode or when the number of database
-** clients drops to zero. If either snapshot handle was obtained before the
-** wal file was last deleted, the value returned by this function
+** clients drops to zero. If either snapshot handle was obtained before the
+** wal file was last deleted, the value returned by this function
** is undefined.
**
** Otherwise, this API returns a negative value if P1 refers to an older
@@ -10470,7 +10752,7 @@ SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_recover(sqlite3 *db, const c
** representation of the database will usually only exist if there has
** been a prior call to [sqlite3_deserialize(D,S,...)] with the same
** values of D and S.
-** The size of the database is written into *P even if the
+** The size of the database is written into *P even if the
** SQLITE_SERIALIZE_NOCOPY bit is set but no contiguous copy
** of the database exists.
**
@@ -10507,7 +10789,7 @@ SQLITE_API unsigned char *sqlite3_serialize(
/*
** CAPI3REF: Deserialize a database
**
-** The sqlite3_deserialize(D,S,P,N,M,F) interface causes the
+** The sqlite3_deserialize(D,S,P,N,M,F) interface causes the
** [database connection] D to disconnect from database S and then
** reopen S as an in-memory database based on the serialization contained
** in P. The serialized database P is N bytes in size. M is the size of
@@ -10526,7 +10808,7 @@ SQLITE_API unsigned char *sqlite3_serialize(
** database is currently in a read transaction or is involved in a backup
** operation.
**
-** If sqlite3_deserialize(D,S,P,N,M,F) fails for any reason and if the
+** If sqlite3_deserialize(D,S,P,N,M,F) fails for any reason and if the
** SQLITE_DESERIALIZE_FREEONCLOSE bit is set in argument F, then
** [sqlite3_free()] is invoked on argument P prior to returning.
**
@@ -10641,7 +10923,7 @@ struct sqlite3_rtree_geometry {
};
/*
-** Register a 2nd-generation geometry callback named zScore that can be
+** Register a 2nd-generation geometry callback named zScore that can be
** used as part of an R-Tree geometry query as follows:
**
** SELECT ... FROM WHERE MATCH $zQueryFunc(... params ...)
@@ -10656,7 +10938,7 @@ SQLITE_API int sqlite3_rtree_query_callback(
/*
-** A pointer to a structure of the following type is passed as the
+** A pointer to a structure of the following type is passed as the
** argument to scored geometry callback registered using
** sqlite3_rtree_query_callback().
**
@@ -10751,7 +11033,7 @@ typedef struct sqlite3_changeset_iter sqlite3_changeset_iter;
** is not possible for an application to register a pre-update hook on a
** database handle that has one or more session objects attached. Nor is
** it possible to create a session object attached to a database handle for
-** which a pre-update hook is already defined. The results of attempting
+** which a pre-update hook is already defined. The results of attempting
** either of these things are undefined.
**
** The session object will be used to create changesets for tables in
@@ -10769,13 +11051,13 @@ SQLITE_API int sqlite3session_create(
** CAPI3REF: Delete A Session Object
** DESTRUCTOR: sqlite3_session
**
-** Delete a session object previously allocated using
+** Delete a session object previously allocated using
** [sqlite3session_create()]. Once a session object has been deleted, the
** results of attempting to use pSession with any other session module
** function are undefined.
**
** Session objects must be deleted before the database handle to which they
-** are attached is closed. Refer to the documentation for
+** are attached is closed. Refer to the documentation for
** [sqlite3session_create()] for details.
*/
SQLITE_API void sqlite3session_delete(sqlite3_session *pSession);
@@ -10793,10 +11075,10 @@ SQLITE_API void sqlite3session_delete(sqlite3_session *pSession);
** the eventual changesets.
**
** Passing zero to this function disables the session. Passing a value
-** greater than zero enables it. Passing a value less than zero is a
+** greater than zero enables it. Passing a value less than zero is a
** no-op, and may be used to query the current state of the session.
**
-** The return value indicates the final state of the session object: 0 if
+** The return value indicates the final state of the session object: 0 if
** the session is disabled, or 1 if it is enabled.
*/
SQLITE_API int sqlite3session_enable(sqlite3_session *pSession, int bEnable);
@@ -10811,7 +11093,7 @@ SQLITE_API int sqlite3session_enable(sqlite3_session *pSession, int bEnable);
**
** - The session object "indirect" flag is set when the change is
** made, or
-**
- The change is made by an SQL trigger or foreign key action
+**
- The change is made by an SQL trigger or foreign key action
** instead of directly as a result of a users SQL statement.
**
**
@@ -10823,10 +11105,10 @@ SQLITE_API int sqlite3session_enable(sqlite3_session *pSession, int bEnable);
** flag. If the second argument passed to this function is zero, then the
** indirect flag is cleared. If it is greater than zero, the indirect flag
** is set. Passing a value less than zero does not modify the current value
-** of the indirect flag, and may be used to query the current state of the
+** of the indirect flag, and may be used to query the current state of the
** indirect flag for the specified session object.
**
-** The return value indicates the final state of the indirect flag: 0 if
+** The return value indicates the final state of the indirect flag: 0 if
** it is clear, or 1 if it is set.
*/
SQLITE_API int sqlite3session_indirect(sqlite3_session *pSession, int bIndirect);
@@ -10836,20 +11118,20 @@ SQLITE_API int sqlite3session_indirect(sqlite3_session *pSession, int bIndirect)
** METHOD: sqlite3_session
**
** If argument zTab is not NULL, then it is the name of a table to attach
-** to the session object passed as the first argument. All subsequent changes
-** made to the table while the session object is enabled will be recorded. See
+** to the session object passed as the first argument. All subsequent changes
+** made to the table while the session object is enabled will be recorded. See
** documentation for [sqlite3session_changeset()] for further details.
**
** Or, if argument zTab is NULL, then changes are recorded for all tables
-** in the database. If additional tables are added to the database (by
-** executing "CREATE TABLE" statements) after this call is made, changes for
+** in the database. If additional tables are added to the database (by
+** executing "CREATE TABLE" statements) after this call is made, changes for
** the new tables are also recorded.
**
** Changes can only be recorded for tables that have a PRIMARY KEY explicitly
-** defined as part of their CREATE TABLE statement. It does not matter if the
+** defined as part of their CREATE TABLE statement. It does not matter if the
** PRIMARY KEY is an "INTEGER PRIMARY KEY" (rowid alias) or not. The PRIMARY
** KEY may consist of a single column, or may be a composite key.
-**
+**
** It is not an error if the named table does not exist in the database. Nor
** is it an error if the named table does not have a PRIMARY KEY. However,
** no changes will be recorded in either of these scenarios.
@@ -10857,29 +11139,29 @@ SQLITE_API int sqlite3session_indirect(sqlite3_session *pSession, int bIndirect)
** Changes are not recorded for individual rows that have NULL values stored
** in one or more of their PRIMARY KEY columns.
**
-** SQLITE_OK is returned if the call completes without error. Or, if an error
+** SQLITE_OK is returned if the call completes without error. Or, if an error
** occurs, an SQLite error code (e.g. SQLITE_NOMEM) is returned.
**
** Special sqlite_stat1 Handling
**
-** As of SQLite version 3.22.0, the "sqlite_stat1" table is an exception to
+** As of SQLite version 3.22.0, the "sqlite_stat1" table is an exception to
** some of the rules above. In SQLite, the schema of sqlite_stat1 is:
**
-** CREATE TABLE sqlite_stat1(tbl,idx,stat)
+** CREATE TABLE sqlite_stat1(tbl,idx,stat)
**
**
-** Even though sqlite_stat1 does not have a PRIMARY KEY, changes are
-** recorded for it as if the PRIMARY KEY is (tbl,idx). Additionally, changes
+** Even though sqlite_stat1 does not have a PRIMARY KEY, changes are
+** recorded for it as if the PRIMARY KEY is (tbl,idx). Additionally, changes
** are recorded for rows for which (idx IS NULL) is true. However, for such
** rows a zero-length blob (SQL value X'') is stored in the changeset or
** patchset instead of a NULL value. This allows such changesets to be
** manipulated by legacy implementations of sqlite3changeset_invert(),
** concat() and similar.
**
-** The sqlite3changeset_apply() function automatically converts the
+** The sqlite3changeset_apply() function automatically converts the
** zero-length blob back to a NULL value when updating the sqlite_stat1
** table. However, if the application calls sqlite3changeset_new(),
-** sqlite3changeset_old() or sqlite3changeset_conflict on a changeset
+** sqlite3changeset_old() or sqlite3changeset_conflict on a changeset
** iterator directly (including on a changeset iterator passed to a
** conflict-handler callback) then the X'' value is returned. The application
** must translate X'' to NULL itself if required.
@@ -10898,10 +11180,10 @@ SQLITE_API int sqlite3session_attach(
** CAPI3REF: Set a table filter on a Session Object.
** METHOD: sqlite3_session
**
-** The second argument (xFilter) is the "filter callback". For changes to rows
+** The second argument (xFilter) is the "filter callback". For changes to rows
** in tables that are not attached to the Session object, the filter is called
-** to determine whether changes to the table's rows should be tracked or not.
-** If xFilter returns 0, changes is not tracked. Note that once a table is
+** to determine whether changes to the table's rows should be tracked or not.
+** If xFilter returns 0, changes are not tracked. Note that once a table is
** attached, xFilter will not be called again.
*/
SQLITE_API void sqlite3session_table_filter(
@@ -10917,9 +11199,9 @@ SQLITE_API void sqlite3session_table_filter(
** CAPI3REF: Generate A Changeset From A Session Object
** METHOD: sqlite3_session
**
-** Obtain a changeset containing changes to the tables attached to the
-** session object passed as the first argument. If successful,
-** set *ppChangeset to point to a buffer containing the changeset
+** Obtain a changeset containing changes to the tables attached to the
+** session object passed as the first argument. If successful,
+** set *ppChangeset to point to a buffer containing the changeset
** and *pnChangeset to the size of the changeset in bytes before returning
** SQLITE_OK. If an error occurs, set both *ppChangeset and *pnChangeset to
** zero and return an SQLite error code.
@@ -10934,7 +11216,7 @@ SQLITE_API void sqlite3session_table_filter(
** modifies the values of primary key columns. If such a change is made, it
** is represented in a changeset as a DELETE followed by an INSERT.
**
-** Changes are not recorded for rows that have NULL values stored in one or
+** Changes are not recorded for rows that have NULL values stored in one or
** more of their PRIMARY KEY columns. If such a row is inserted or deleted,
** no corresponding change is present in the changesets returned by this
** function. If an existing row with one or more NULL values stored in
@@ -10987,14 +11269,14 @@ SQLITE_API void sqlite3session_table_filter(
**
** - For each record generated by an insert, the database is queried
** for a row with a matching primary key. If one is found, an INSERT
-** change is added to the changeset. If no such row is found, no change
+** change is added to the changeset. If no such row is found, no change
** is added to the changeset.
**
-**
- For each record generated by an update or delete, the database is
+**
- For each record generated by an update or delete, the database is
** queried for a row with a matching primary key. If such a row is
** found and one or more of the non-primary key fields have been
-** modified from their original values, an UPDATE change is added to
-** the changeset. Or, if no such row is found in the table, a DELETE
+** modified from their original values, an UPDATE change is added to
+** the changeset. Or, if no such row is found in the table, a DELETE
** change is added to the changeset. If there is a row with a matching
** primary key in the database, but all fields contain their original
** values, no change is added to the changeset.
@@ -11002,7 +11284,7 @@ SQLITE_API void sqlite3session_table_filter(
**
** This means, amongst other things, that if a row is inserted and then later
** deleted while a session object is active, neither the insert nor the delete
-** will be present in the changeset. Or if a row is deleted and then later a
+** will be present in the changeset. Or if a row is deleted and then later a
** row with the same primary key values inserted while a session object is
** active, the resulting changeset will contain an UPDATE change instead of
** a DELETE and an INSERT.
@@ -11011,10 +11293,10 @@ SQLITE_API void sqlite3session_table_filter(
** it does not accumulate records when rows are inserted, updated or deleted.
** This may appear to have some counter-intuitive effects if a single row
** is written to more than once during a session. For example, if a row
-** is inserted while a session object is enabled, then later deleted while
+** is inserted while a session object is enabled, then later deleted while
** the same session object is disabled, no INSERT record will appear in the
** changeset, even though the delete took place while the session was disabled.
-** Or, if one field of a row is updated while a session is disabled, and
+** Or, if one field of a row is updated while a session is disabled, and
** another field of the same row is updated while the session is enabled, the
** resulting changeset will contain an UPDATE change that updates both fields.
*/
@@ -11035,7 +11317,7 @@ SQLITE_API int sqlite3session_changeset(
** an error).
**
** Argument zFromDb must be the name of a database ("main", "temp" etc.)
-** attached to the same database handle as the session object that contains
+** attached to the same database handle as the session object that contains
** a table compatible with the table attached to the session by this function.
** A table is considered compatible if it:
**
@@ -11051,33 +11333,33 @@ SQLITE_API int sqlite3session_changeset(
** APIs, tables without PRIMARY KEYs are simply ignored.
**
** This function adds a set of changes to the session object that could be
-** used to update the table in database zFrom (call this the "from-table")
-** so that its content is the same as the table attached to the session
+** used to update the table in database zFrom (call this the "from-table")
+** so that its content is the same as the table attached to the session
** object (call this the "to-table"). Specifically:
**
**
-** - For each row (primary key) that exists in the to-table but not in
+**
- For each row (primary key) that exists in the to-table but not in
** the from-table, an INSERT record is added to the session object.
**
-**
- For each row (primary key) that exists in the to-table but not in
+**
- For each row (primary key) that exists in the to-table but not in
** the from-table, a DELETE record is added to the session object.
**
-**
- For each row (primary key) that exists in both tables, but features
+**
- For each row (primary key) that exists in both tables, but features
** different non-PK values in each, an UPDATE record is added to the
-** session.
+** session.
**
**
** To clarify, if this function is called and then a changeset constructed
-** using [sqlite3session_changeset()], then after applying that changeset to
-** database zFrom the contents of the two compatible tables would be
+** using [sqlite3session_changeset()], then after applying that changeset to
+** database zFrom the contents of the two compatible tables would be
** identical.
**
** It an error if database zFrom does not exist or does not contain the
** required compatible table.
**
-** If the operation successful, SQLITE_OK is returned. Otherwise, an SQLite
+** If the operation is successful, SQLITE_OK is returned. Otherwise, an SQLite
** error code. In this case, if argument pzErrMsg is not NULL, *pzErrMsg
-** may be set to point to a buffer containing an English language error
+** may be set to point to a buffer containing an English language error
** message. It is the responsibility of the caller to free this buffer using
** sqlite3_free().
*/
@@ -11096,19 +11378,19 @@ SQLITE_API int sqlite3session_diff(
** The differences between a patchset and a changeset are that:
**
**
-** - DELETE records consist of the primary key fields only. The
+**
- DELETE records consist of the primary key fields only. The
** original values of other fields are omitted.
-**
- The original values of any modified fields are omitted from
+**
- The original values of any modified fields are omitted from
** UPDATE records.
**
**
-** A patchset blob may be used with up to date versions of all
-** sqlite3changeset_xxx API functions except for sqlite3changeset_invert(),
+** A patchset blob may be used with up to date versions of all
+** sqlite3changeset_xxx API functions except for sqlite3changeset_invert(),
** which returns SQLITE_CORRUPT if it is passed a patchset. Similarly,
** attempting to use a patchset blob with old versions of the
-** sqlite3changeset_xxx APIs also provokes an SQLITE_CORRUPT error.
+** sqlite3changeset_xxx APIs also provokes an SQLITE_CORRUPT error.
**
-** Because the non-primary key "old.*" fields are omitted, no
+** Because the non-primary key "old.*" fields are omitted, no
** SQLITE_CHANGESET_DATA conflicts can be detected or reported if a patchset
** is passed to the sqlite3changeset_apply() API. Other conflict types work
** in the same way as for changesets.
@@ -11127,22 +11409,22 @@ SQLITE_API int sqlite3session_patchset(
/*
** CAPI3REF: Test if a changeset has recorded any changes.
**
-** Return non-zero if no changes to attached tables have been recorded by
-** the session object passed as the first argument. Otherwise, if one or
+** Return non-zero if no changes to attached tables have been recorded by
+** the session object passed as the first argument. Otherwise, if one or
** more changes have been recorded, return zero.
**
** Even if this function returns zero, it is possible that calling
** [sqlite3session_changeset()] on the session handle may still return a
-** changeset that contains no changes. This can happen when a row in
-** an attached table is modified and then later on the original values
+** changeset that contains no changes. This can happen when a row in
+** an attached table is modified and then later on the original values
** are restored. However, if this function returns non-zero, then it is
-** guaranteed that a call to sqlite3session_changeset() will return a
+** guaranteed that a call to sqlite3session_changeset() will return a
** changeset containing zero changes.
*/
SQLITE_API int sqlite3session_isempty(sqlite3_session *pSession);
/*
-** CAPI3REF: Create An Iterator To Traverse A Changeset
+** CAPI3REF: Create An Iterator To Traverse A Changeset
** CONSTRUCTOR: sqlite3_changeset_iter
**
** Create an iterator used to iterate through the contents of a changeset.
@@ -11150,7 +11432,7 @@ SQLITE_API int sqlite3session_isempty(sqlite3_session *pSession);
** is returned. Otherwise, if an error occurs, *pp is set to zero and an
** SQLite error code is returned.
**
-** The following functions can be used to advance and query a changeset
+** The following functions can be used to advance and query a changeset
** iterator created by this function:
**
**
@@ -11167,12 +11449,12 @@ SQLITE_API int sqlite3session_isempty(sqlite3_session *pSession);
**
** Assuming the changeset blob was created by one of the
** [sqlite3session_changeset()], [sqlite3changeset_concat()] or
-** [sqlite3changeset_invert()] functions, all changes within the changeset
-** that apply to a single table are grouped together. This means that when
-** an application iterates through a changeset using an iterator created by
-** this function, all changes that relate to a single table are visited
-** consecutively. There is no chance that the iterator will visit a change
-** the applies to table X, then one for table Y, and then later on visit
+** [sqlite3changeset_invert()] functions, all changes within the changeset
+** that apply to a single table are grouped together. This means that when
+** an application iterates through a changeset using an iterator created by
+** this function, all changes that relate to a single table are visited
+** consecutively. There is no chance that the iterator will visit a change
+** the applies to table X, then one for table Y, and then later on visit
** another change for table X.
**
** The behavior of sqlite3changeset_start_v2() and its streaming equivalent
@@ -11212,7 +11494,7 @@ SQLITE_API int sqlite3changeset_start_v2(
** CAPI3REF: Advance A Changeset Iterator
** METHOD: sqlite3_changeset_iter
**
-** This function may only be used with iterators created by function
+** This function may only be used with iterators created by the function
** [sqlite3changeset_start()]. If it is called on an iterator passed to
** a conflict-handler callback by [sqlite3changeset_apply()], SQLITE_MISUSE
** is returned and the call has no effect.
@@ -11223,12 +11505,12 @@ SQLITE_API int sqlite3changeset_start_v2(
** point to the first change in the changeset. Each subsequent call advances
** the iterator to point to the next change in the changeset (if any). If
** no error occurs and the iterator points to a valid change after a call
-** to sqlite3changeset_next() has advanced it, SQLITE_ROW is returned.
+** to sqlite3changeset_next() has advanced it, SQLITE_ROW is returned.
** Otherwise, if all changes in the changeset have already been visited,
** SQLITE_DONE is returned.
**
-** If an error occurs, an SQLite error code is returned. Possible error
-** codes include SQLITE_CORRUPT (if the changeset buffer is corrupt) or
+** If an error occurs, an SQLite error code is returned. Possible error
+** codes include SQLITE_CORRUPT (if the changeset buffer is corrupt) or
** SQLITE_NOMEM.
*/
SQLITE_API int sqlite3changeset_next(sqlite3_changeset_iter *pIter);
@@ -11246,14 +11528,14 @@ SQLITE_API int sqlite3changeset_next(sqlite3_changeset_iter *pIter);
** If argument pzTab is not NULL, then *pzTab is set to point to a
** nul-terminated utf-8 encoded string containing the name of the table
** affected by the current change. The buffer remains valid until either
-** sqlite3changeset_next() is called on the iterator or until the
-** conflict-handler function returns. If pnCol is not NULL, then *pnCol is
+** sqlite3changeset_next() is called on the iterator or until the
+** conflict-handler function returns. If pnCol is not NULL, then *pnCol is
** set to the number of columns in the table affected by the change. If
** pbIndirect is not NULL, then *pbIndirect is set to true (1) if the change
** is an indirect change, or false (0) otherwise. See the documentation for
** [sqlite3session_indirect()] for a description of direct and indirect
-** changes. Finally, if pOp is not NULL, then *pOp is set to one of
-** [SQLITE_INSERT], [SQLITE_DELETE] or [SQLITE_UPDATE], depending on the
+** changes. Finally, if pOp is not NULL, then *pOp is set to one of
+** [SQLITE_INSERT], [SQLITE_DELETE] or [SQLITE_UPDATE], depending on the
** type of change that the iterator currently points to.
**
** If no error occurs, SQLITE_OK is returned. If an error does occur, an
@@ -11307,7 +11589,7 @@ SQLITE_API int sqlite3changeset_pk(
** The pIter argument passed to this function may either be an iterator
** passed to a conflict-handler by [sqlite3changeset_apply()], or an iterator
** created by [sqlite3changeset_start()]. In the latter case, the most recent
-** call to [sqlite3changeset_next()] must have returned SQLITE_ROW.
+** call to [sqlite3changeset_next()] must have returned SQLITE_ROW.
** Furthermore, it may only be called if the type of change that the iterator
** currently points to is either [SQLITE_DELETE] or [SQLITE_UPDATE]. Otherwise,
** this function returns [SQLITE_MISUSE] and sets *ppValue to NULL.
@@ -11317,9 +11599,9 @@ SQLITE_API int sqlite3changeset_pk(
** [SQLITE_RANGE] is returned and *ppValue is set to NULL.
**
** If successful, this function sets *ppValue to point to a protected
-** sqlite3_value object containing the iVal'th value from the vector of
+** sqlite3_value object containing the iVal'th value from the vector of
** original row values stored as part of the UPDATE or DELETE change and
-** returns SQLITE_OK. The name of the function comes from the fact that this
+** returns SQLITE_OK. The name of the function comes from the fact that this
** is similar to the "old.*" columns available to update or delete triggers.
**
** If some other error occurs (e.g. an OOM condition), an SQLite error code
@@ -11338,7 +11620,7 @@ SQLITE_API int sqlite3changeset_old(
** The pIter argument passed to this function may either be an iterator
** passed to a conflict-handler by [sqlite3changeset_apply()], or an iterator
** created by [sqlite3changeset_start()]. In the latter case, the most recent
-** call to [sqlite3changeset_next()] must have returned SQLITE_ROW.
+** call to [sqlite3changeset_next()] must have returned SQLITE_ROW.
** Furthermore, it may only be called if the type of change that the iterator
** currently points to is either [SQLITE_UPDATE] or [SQLITE_INSERT]. Otherwise,
** this function returns [SQLITE_MISUSE] and sets *ppValue to NULL.
@@ -11348,12 +11630,12 @@ SQLITE_API int sqlite3changeset_old(
** [SQLITE_RANGE] is returned and *ppValue is set to NULL.
**
** If successful, this function sets *ppValue to point to a protected
-** sqlite3_value object containing the iVal'th value from the vector of
+** sqlite3_value object containing the iVal'th value from the vector of
** new row values stored as part of the UPDATE or INSERT change and
** returns SQLITE_OK. If the change is an UPDATE and does not include
-** a new value for the requested column, *ppValue is set to NULL and
-** SQLITE_OK returned. The name of the function comes from the fact that
-** this is similar to the "new.*" columns available to update or delete
+** a new value for the requested column, *ppValue is set to NULL and
+** SQLITE_OK returned. The name of the function comes from the fact that
+** this is similar to the "new.*" columns available to update or delete
** triggers.
**
** If some other error occurs (e.g. an OOM condition), an SQLite error code
@@ -11380,7 +11662,7 @@ SQLITE_API int sqlite3changeset_new(
** [SQLITE_RANGE] is returned and *ppValue is set to NULL.
**
** If successful, this function sets *ppValue to point to a protected
-** sqlite3_value object containing the iVal'th value from the
+** sqlite3_value object containing the iVal'th value from the
** "conflicting row" associated with the current conflict-handler callback
** and returns SQLITE_OK.
**
@@ -11424,7 +11706,7 @@ SQLITE_API int sqlite3changeset_fk_conflicts(
** call has no effect.
**
** If an error was encountered within a call to an sqlite3changeset_xxx()
-** function (for example an [SQLITE_CORRUPT] in [sqlite3changeset_next()] or an
+** function (for example an [SQLITE_CORRUPT] in [sqlite3changeset_next()] or an
** [SQLITE_NOMEM] in [sqlite3changeset_new()]) then an error code corresponding
** to that error is returned by this function. Otherwise, SQLITE_OK is
** returned. This is to allow the following pattern (pseudo-code):
@@ -11436,7 +11718,7 @@ SQLITE_API int sqlite3changeset_fk_conflicts(
** }
** rc = sqlite3changeset_finalize();
** if( rc!=SQLITE_OK ){
-** // An error has occurred
+** // An error has occurred
** }
**
*/
@@ -11464,7 +11746,7 @@ SQLITE_API int sqlite3changeset_finalize(sqlite3_changeset_iter *pIter);
** zeroed and an SQLite error code returned.
**
** It is the responsibility of the caller to eventually call sqlite3_free()
-** on the *ppOut pointer to free the buffer allocation following a successful
+** on the *ppOut pointer to free the buffer allocation following a successful
** call to this function.
**
** WARNING/TODO: This function currently assumes that the input is a valid
@@ -11478,11 +11760,11 @@ SQLITE_API int sqlite3changeset_invert(
/*
** CAPI3REF: Concatenate Two Changeset Objects
**
-** This function is used to concatenate two changesets, A and B, into a
+** This function is used to concatenate two changesets, A and B, into a
** single changeset. The result is a changeset equivalent to applying
-** changeset A followed by changeset B.
+** changeset A followed by changeset B.
**
-** This function combines the two input changesets using an
+** This function combines the two input changesets using an
** sqlite3_changegroup object. Calling it produces similar results as the
** following code fragment:
**
@@ -11514,7 +11796,7 @@ SQLITE_API int sqlite3changeset_concat(
/*
** CAPI3REF: Changegroup Handle
**
-** A changegroup is an object used to combine two or more
+** A changegroup is an object used to combine two or more
** [changesets] or [patchsets]
*/
typedef struct sqlite3_changegroup sqlite3_changegroup;
@@ -11530,7 +11812,7 @@ typedef struct sqlite3_changegroup sqlite3_changegroup;
**
** If successful, this function returns SQLITE_OK and populates (*pp) with
** a pointer to a new sqlite3_changegroup object before returning. The caller
-** should eventually free the returned object using a call to
+** should eventually free the returned object using a call to
** sqlite3changegroup_delete(). If an error occurs, an SQLite error code
** (i.e. SQLITE_NOMEM) is returned and *pp is set to NULL.
**
@@ -11542,7 +11824,7 @@ typedef struct sqlite3_changegroup sqlite3_changegroup;
** - Zero or more changesets (or patchsets) are added to the object
** by calling sqlite3changegroup_add().
**
-**
- The result of combining all input changesets together is obtained
+**
- The result of combining all input changesets together is obtained
** by the application via a call to sqlite3changegroup_output().
**
**
- The object is deleted using a call to sqlite3changegroup_delete().
@@ -11551,7 +11833,7 @@ typedef struct sqlite3_changegroup sqlite3_changegroup;
** Any number of calls to add() and output() may be made between the calls to
** new() and delete(), and in any order.
**
-** As well as the regular sqlite3changegroup_add() and
+** As well as the regular sqlite3changegroup_add() and
** sqlite3changegroup_output() functions, also available are the streaming
** versions sqlite3changegroup_add_strm() and sqlite3changegroup_output_strm().
*/
@@ -11562,7 +11844,7 @@ SQLITE_API int sqlite3changegroup_new(sqlite3_changegroup **pp);
** METHOD: sqlite3_changegroup
**
** Add all changes within the changeset (or patchset) in buffer pData (size
-** nData bytes) to the changegroup.
+** nData bytes) to the changegroup.
**
** If the buffer contains a patchset, then all prior calls to this function
** on the same changegroup object must also have specified patchsets. Or, if
@@ -11589,7 +11871,7 @@ SQLITE_API int sqlite3changegroup_new(sqlite3_changegroup **pp);
** changeset was recorded immediately after the changesets already
** added to the changegroup.
**
| INSERT | UPDATE |
-** The INSERT change remains in the changegroup. The values in the
+** The INSERT change remains in the changegroup. The values in the
** INSERT change are modified as if the row was inserted by the
** existing change and then updated according to the new change.
** | | INSERT | DELETE |
@@ -11600,17 +11882,17 @@ SQLITE_API int sqlite3changegroup_new(sqlite3_changegroup **pp);
** changeset was recorded immediately after the changesets already
** added to the changegroup.
** | | UPDATE | UPDATE |
-** The existing UPDATE remains within the changegroup. It is amended
-** so that the accompanying values are as if the row was updated once
+** The existing UPDATE remains within the changegroup. It is amended
+** so that the accompanying values are as if the row was updated once
** by the existing change and then again by the new change.
** | | UPDATE | DELETE |
** The existing UPDATE is replaced by the new DELETE within the
** changegroup.
** | | DELETE | INSERT |
** If one or more of the column values in the row inserted by the
-** new change differ from those in the row deleted by the existing
+** new change differ from those in the row deleted by the existing
** change, the existing DELETE is replaced by an UPDATE within the
-** changegroup. Otherwise, if the inserted row is exactly the same
+** changegroup. Otherwise, if the inserted row is exactly the same
** as the deleted row, the existing DELETE is simply discarded.
** | | DELETE | UPDATE |
** The new change is ignored. This case does not occur if the new
@@ -11628,8 +11910,8 @@ SQLITE_API int sqlite3changegroup_new(sqlite3_changegroup **pp);
** case, this function fails with SQLITE_SCHEMA. If the input changeset
** appears to be corrupt and the corruption is detected, SQLITE_CORRUPT is
** returned. Or, if an out-of-memory condition occurs during processing, this
-** function returns SQLITE_NOMEM. In all cases, if an error occurs the
-** final contents of the changegroup is undefined.
+** function returns SQLITE_NOMEM. In all cases, if an error occurs the state
+** of the final contents of the changegroup is undefined.
**
** If no error occurs, SQLITE_OK is returned.
*/
@@ -11655,7 +11937,7 @@ SQLITE_API int sqlite3changegroup_add(sqlite3_changegroup*, int nData, void *pDa
**
** If an error occurs, an SQLite error code is returned and the output
** variables (*pnData) and (*ppData) are set to 0. Otherwise, SQLITE_OK
-** is returned and the output variables are set to the size of and a
+** is returned and the output variables are set to the size of and a
** pointer to the output buffer, respectively. In this case it is the
** responsibility of the caller to eventually free the buffer using a
** call to sqlite3_free().
@@ -11677,7 +11959,7 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*);
**
** Apply a changeset or patchset to a database. These functions attempt to
** update the "main" database attached to handle db with the changes found in
-** the changeset passed via the second and third arguments.
+** the changeset passed via the second and third arguments.
**
** The fourth argument (xFilter) passed to these functions is the "filter
** callback". If it is not NULL, then for each table affected by at least one
@@ -11688,16 +11970,16 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*);
** Otherwise, if the return value is non-zero or the xFilter argument to
** is NULL, all changes related to the table are attempted.
**
-** For each table that is not excluded by the filter callback, this function
-** tests that the target database contains a compatible table. A table is
+** For each table that is not excluded by the filter callback, this function
+** tests that the target database contains a compatible table. A table is
** considered compatible if all of the following are true:
**
**
-** - The table has the same name as the name recorded in the
+**
- The table has the same name as the name recorded in the
** changeset, and
-**
- The table has at least as many columns as recorded in the
+**
- The table has at least as many columns as recorded in the
** changeset, and
-**
- The table has primary key columns in the same position as
+**
- The table has primary key columns in the same position as
** recorded in the changeset.
**
**
@@ -11706,11 +11988,11 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*);
** via the sqlite3_log() mechanism with the error code SQLITE_SCHEMA. At most
** one such warning is issued for each table in the changeset.
**
-** For each change for which there is a compatible table, an attempt is made
-** to modify the table contents according to the UPDATE, INSERT or DELETE
-** change. If a change cannot be applied cleanly, the conflict handler
-** function passed as the fifth argument to sqlite3changeset_apply() may be
-** invoked. A description of exactly when the conflict handler is invoked for
+** For each change for which there is a compatible table, an attempt is made
+** to modify the table contents according to the UPDATE, INSERT or DELETE
+** change. If a change cannot be applied cleanly, the conflict handler
+** function passed as the fifth argument to sqlite3changeset_apply() may be
+** invoked. A description of exactly when the conflict handler is invoked for
** each type of change is below.
**
** Unlike the xFilter argument, xConflict may not be passed NULL. The results
@@ -11718,23 +12000,23 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*);
** argument are undefined.
**
** Each time the conflict handler function is invoked, it must return one
-** of [SQLITE_CHANGESET_OMIT], [SQLITE_CHANGESET_ABORT] or
+** of [SQLITE_CHANGESET_OMIT], [SQLITE_CHANGESET_ABORT] or
** [SQLITE_CHANGESET_REPLACE]. SQLITE_CHANGESET_REPLACE may only be returned
** if the second argument passed to the conflict handler is either
** SQLITE_CHANGESET_DATA or SQLITE_CHANGESET_CONFLICT. If the conflict-handler
** returns an illegal value, any changes already made are rolled back and
-** the call to sqlite3changeset_apply() returns SQLITE_MISUSE. Different
+** the call to sqlite3changeset_apply() returns SQLITE_MISUSE. Different
** actions are taken by sqlite3changeset_apply() depending on the value
** returned by each invocation of the conflict-handler function. Refer to
-** the documentation for the three
+** the documentation for the three
** [SQLITE_CHANGESET_OMIT|available return values] for details.
**
**
** - DELETE Changes
-
-** For each DELETE change, the function checks if the target database
-** contains a row with the same primary key value (or values) as the
-** original row values stored in the changeset. If it does, and the values
-** stored in all non-primary key columns also match the values stored in
+** For each DELETE change, the function checks if the target database
+** contains a row with the same primary key value (or values) as the
+** original row values stored in the changeset. If it does, and the values
+** stored in all non-primary key columns also match the values stored in
** the changeset the row is deleted from the target database.
**
** If a row with matching primary key values is found, but one or more of
@@ -11763,22 +12045,22 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*);
** database table, the trailing fields are populated with their default
** values.
**
-** If the attempt to insert the row fails because the database already
+** If the attempt to insert the row fails because the database already
** contains a row with the same primary key values, the conflict handler
-** function is invoked with the second argument set to
+** function is invoked with the second argument set to
** [SQLITE_CHANGESET_CONFLICT].
**
** If the attempt to insert the row fails because of some other constraint
-** violation (e.g. NOT NULL or UNIQUE), the conflict handler function is
+** violation (e.g. NOT NULL or UNIQUE), the conflict handler function is
** invoked with the second argument set to [SQLITE_CHANGESET_CONSTRAINT].
-** This includes the case where the INSERT operation is re-attempted because
-** an earlier call to the conflict handler function returned
+** This includes the case where the INSERT operation is re-attempted because
+** an earlier call to the conflict handler function returned
** [SQLITE_CHANGESET_REPLACE].
**
**
- UPDATE Changes
-
-** For each UPDATE change, the function checks if the target database
-** contains a row with the same primary key value (or values) as the
-** original row values stored in the changeset. If it does, and the values
+** For each UPDATE change, the function checks if the target database
+** contains a row with the same primary key value (or values) as the
+** original row values stored in the changeset. If it does, and the values
** stored in all modified non-primary key columns also match the values
** stored in the changeset the row is updated within the target database.
**
@@ -11794,28 +12076,28 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*);
** the conflict-handler function is invoked with [SQLITE_CHANGESET_NOTFOUND]
** passed as the second argument.
**
-** If the UPDATE operation is attempted, but SQLite returns
-** SQLITE_CONSTRAINT, the conflict-handler function is invoked with
+** If the UPDATE operation is attempted, but SQLite returns
+** SQLITE_CONSTRAINT, the conflict-handler function is invoked with
** [SQLITE_CHANGESET_CONSTRAINT] passed as the second argument.
-** This includes the case where the UPDATE operation is attempted after
+** This includes the case where the UPDATE operation is attempted after
** an earlier call to the conflict handler function returned
-** [SQLITE_CHANGESET_REPLACE].
+** [SQLITE_CHANGESET_REPLACE].
**
**
** It is safe to execute SQL statements, including those that write to the
** table that the callback related to, from within the xConflict callback.
-** This can be used to further customize the applications conflict
+** This can be used to further customize the application's conflict
** resolution strategy.
**
** All changes made by these functions are enclosed in a savepoint transaction.
** If any other error (aside from a constraint failure when attempting to
** write to the target database) occurs, then the savepoint transaction is
-** rolled back, restoring the target database to its original state, and an
+** rolled back, restoring the target database to its original state, and an
** SQLite error code returned.
**
** If the output parameters (ppRebase) and (pnRebase) are non-NULL and
** the input is a changeset (not a patchset), then sqlite3changeset_apply_v2()
-** may set (*ppRebase) to point to a "rebase" that may be used with the
+** may set (*ppRebase) to point to a "rebase" that may be used with the
** sqlite3_rebaser APIs buffer before returning. In this case (*pnRebase)
** is set to the size of the buffer in bytes. It is the responsibility of the
** caller to eventually free any such buffer using sqlite3_free(). The buffer
@@ -11876,7 +12158,7 @@ SQLITE_API int sqlite3changeset_apply_v2(
** SAVEPOINT is committed if the changeset or patchset is successfully
** applied, or rolled back if an error occurs. Specifying this flag
** causes the sessions module to omit this savepoint. In this case, if the
-** caller has an open transaction or savepoint when apply_v2() is called,
+** caller has an open transaction or savepoint when apply_v2() is called,
** it may revert the partially applied changeset by rolling it back.
**
** - SQLITE_CHANGESETAPPLY_INVERT
-
@@ -11887,7 +12169,7 @@ SQLITE_API int sqlite3changeset_apply_v2(
#define SQLITE_CHANGESETAPPLY_NOSAVEPOINT 0x0001
#define SQLITE_CHANGESETAPPLY_INVERT 0x0002
-/*
+/*
** CAPI3REF: Constants Passed To The Conflict Handler
**
** Values that may be passed as the second argument to a conflict-handler.
@@ -11896,32 +12178,32 @@ SQLITE_API int sqlite3changeset_apply_v2(
**
- SQLITE_CHANGESET_DATA
-
** The conflict handler is invoked with CHANGESET_DATA as the second argument
** when processing a DELETE or UPDATE change if a row with the required
-** PRIMARY KEY fields is present in the database, but one or more other
-** (non primary-key) fields modified by the update do not contain the
+** PRIMARY KEY fields is present in the database, but one or more other
+** (non primary-key) fields modified by the update do not contain the
** expected "before" values.
-**
+**
** The conflicting row, in this case, is the database row with the matching
** primary key.
-**
+**
**
- SQLITE_CHANGESET_NOTFOUND
-
** The conflict handler is invoked with CHANGESET_NOTFOUND as the second
** argument when processing a DELETE or UPDATE change if a row with the
** required PRIMARY KEY fields is not present in the database.
-**
+**
** There is no conflicting row in this case. The results of invoking the
** sqlite3changeset_conflict() API are undefined.
-**
+**
**
- SQLITE_CHANGESET_CONFLICT
-
** CHANGESET_CONFLICT is passed as the second argument to the conflict
-** handler while processing an INSERT change if the operation would result
+** handler while processing an INSERT change if the operation would result
** in duplicate primary key values.
-**
+**
** The conflicting row in this case is the database row with the matching
** primary key.
**
**
- SQLITE_CHANGESET_FOREIGN_KEY
-
** If foreign key handling is enabled, and applying a changeset leaves the
-** database in a state containing foreign key violations, the conflict
+** database in a state containing foreign key violations, the conflict
** handler is invoked with CHANGESET_FOREIGN_KEY as the second argument
** exactly once before the changeset is committed. If the conflict handler
** returns CHANGESET_OMIT, the changes, including those that caused the
@@ -11931,12 +12213,12 @@ SQLITE_API int sqlite3changeset_apply_v2(
** No current or conflicting row information is provided. The only function
** it is possible to call on the supplied sqlite3_changeset_iter handle
** is sqlite3changeset_fk_conflicts().
-**
+**
**
- SQLITE_CHANGESET_CONSTRAINT
-
-** If any other constraint violation occurs while applying a change (i.e.
-** a UNIQUE, CHECK or NOT NULL constraint), the conflict handler is
+** If any other constraint violation occurs while applying a change (i.e.
+** a UNIQUE, CHECK or NOT NULL constraint), the conflict handler is
** invoked with CHANGESET_CONSTRAINT as the second argument.
-**
+**
** There is no conflicting row in this case. The results of invoking the
** sqlite3changeset_conflict() API are undefined.
**
@@ -11948,7 +12230,7 @@ SQLITE_API int sqlite3changeset_apply_v2(
#define SQLITE_CHANGESET_CONSTRAINT 4
#define SQLITE_CHANGESET_FOREIGN_KEY 5
-/*
+/*
** CAPI3REF: Constants Returned By The Conflict Handler
**
** A conflict handler callback must return one of the following three values.
@@ -11956,13 +12238,13 @@ SQLITE_API int sqlite3changeset_apply_v2(
**
** - SQLITE_CHANGESET_OMIT
-
** If a conflict handler returns this value no special action is taken. The
-** change that caused the conflict is not applied. The session module
+** change that caused the conflict is not applied. The session module
** continues to the next change in the changeset.
**
**
- SQLITE_CHANGESET_REPLACE
-
** This value may only be returned if the second argument to the conflict
** handler was SQLITE_CHANGESET_DATA or SQLITE_CHANGESET_CONFLICT. If this
-** is not the case, any changes applied so far are rolled back and the
+** is not the case, any changes applied so far are rolled back and the
** call to sqlite3changeset_apply() returns SQLITE_MISUSE.
**
** If CHANGESET_REPLACE is returned by an SQLITE_CHANGESET_DATA conflict
@@ -11975,7 +12257,7 @@ SQLITE_API int sqlite3changeset_apply_v2(
** the original row is restored to the database before continuing.
**
**
- SQLITE_CHANGESET_ABORT
-
-** If this value is returned, any changes applied so far are rolled back
+** If this value is returned, any changes applied so far are rolled back
** and the call to sqlite3changeset_apply() returns SQLITE_ABORT.
**
*/
@@ -11983,20 +12265,20 @@ SQLITE_API int sqlite3changeset_apply_v2(
#define SQLITE_CHANGESET_REPLACE 1
#define SQLITE_CHANGESET_ABORT 2
-/*
+/*
** CAPI3REF: Rebasing changesets
** EXPERIMENTAL
**
** Suppose there is a site hosting a database in state S0. And that
** modifications are made that move that database to state S1 and a
** changeset recorded (the "local" changeset). Then, a changeset based
-** on S0 is received from another site (the "remote" changeset) and
-** applied to the database. The database is then in state
+** on S0 is received from another site (the "remote" changeset) and
+** applied to the database. The database is then in state
** (S1+"remote"), where the exact state depends on any conflict
** resolution decisions (OMIT or REPLACE) made while applying "remote".
-** Rebasing a changeset is to update it to take those conflict
+** Rebasing a changeset is to update it to take those conflict
** resolution decisions into account, so that the same conflicts
-** do not have to be resolved elsewhere in the network.
+** do not have to be resolved elsewhere in the network.
**
** For example, if both the local and remote changesets contain an
** INSERT of the same key on "CREATE TABLE t1(a PRIMARY KEY, b)":
@@ -12015,7 +12297,7 @@ SQLITE_API int sqlite3changeset_apply_v2(
**
**
** - Local INSERT
-
-** This may only conflict with a remote INSERT. If the conflict
+** This may only conflict with a remote INSERT. If the conflict
** resolution was OMIT, then add an UPDATE change to the rebased
** changeset. Or, if the conflict resolution was REPLACE, add
** nothing to the rebased changeset.
@@ -12039,12 +12321,12 @@ SQLITE_API int sqlite3changeset_apply_v2(
** the old.* values are rebased using the new.* values in the remote
** change. Or, if the resolution is REPLACE, then the change is copied
** into the rebased changeset with updates to columns also updated by
-** the conflicting remote UPDATE removed. If this means no columns would
+** the conflicting remote UPDATE removed. If this means no columns would
** be updated, the change is omitted.
**
**
-** A local change may be rebased against multiple remote changes
-** simultaneously. If a single key is modified by multiple remote
+** A local change may be rebased against multiple remote changes
+** simultaneously. If a single key is modified by multiple remote
** changesets, they are combined as follows before the local changeset
** is rebased:
**
@@ -12057,10 +12339,10 @@ SQLITE_API int sqlite3changeset_apply_v2(
** of the OMIT resolutions.
**
**
-** Note that conflict resolutions from multiple remote changesets are
-** combined on a per-field basis, not per-row. This means that in the
-** case of multiple remote UPDATE operations, some fields of a single
-** local change may be rebased for REPLACE while others are rebased for
+** Note that conflict resolutions from multiple remote changesets are
+** combined on a per-field basis, not per-row. This means that in the
+** case of multiple remote UPDATE operations, some fields of a single
+** local change may be rebased for REPLACE while others are rebased for
** OMIT.
**
** In order to rebase a local changeset, the remote changeset must first
@@ -12068,7 +12350,7 @@ SQLITE_API int sqlite3changeset_apply_v2(
** the buffer of rebase information captured. Then:
**
**
-** - An sqlite3_rebaser object is created by calling
+**
- An sqlite3_rebaser object is created by calling
** sqlite3rebaser_create().
**
- The new object is configured with the rebase buffer obtained from
** sqlite3changeset_apply_v2() by calling sqlite3rebaser_configure().
@@ -12089,8 +12371,8 @@ typedef struct sqlite3_rebaser sqlite3_rebaser;
**
** Allocate a new changeset rebaser object. If successful, set (*ppNew) to
** point to the new object and return SQLITE_OK. Otherwise, if an error
-** occurs, return an SQLite error code (e.g. SQLITE_NOMEM) and set (*ppNew)
-** to NULL.
+** occurs, return an SQLite error code (e.g. SQLITE_NOMEM) and set (*ppNew)
+** to NULL.
*/
SQLITE_API int sqlite3rebaser_create(sqlite3_rebaser **ppNew);
@@ -12104,9 +12386,9 @@ SQLITE_API int sqlite3rebaser_create(sqlite3_rebaser **ppNew);
** sqlite3changeset_apply_v2().
*/
SQLITE_API int sqlite3rebaser_configure(
- sqlite3_rebaser*,
+ sqlite3_rebaser*,
int nRebase, const void *pRebase
-);
+);
/*
** CAPI3REF: Rebase a changeset
@@ -12114,9 +12396,9 @@ SQLITE_API int sqlite3rebaser_configure(
**
** Argument pIn must point to a buffer containing a changeset nIn bytes
** in size. This function allocates and populates a buffer with a copy
-** of the changeset rebased rebased according to the configuration of the
+** of the changeset rebased according to the configuration of the
** rebaser object passed as the first argument. If successful, (*ppOut)
-** is set to point to the new buffer containing the rebased changeset and
+** is set to point to the new buffer containing the rebased changeset and
** (*pnOut) to its size in bytes and SQLITE_OK returned. It is the
** responsibility of the caller to eventually free the new buffer using
** sqlite3_free(). Otherwise, if an error occurs, (*ppOut) and (*pnOut)
@@ -12124,8 +12406,8 @@ SQLITE_API int sqlite3rebaser_configure(
*/
SQLITE_API int sqlite3rebaser_rebase(
sqlite3_rebaser*,
- int nIn, const void *pIn,
- int *pnOut, void **ppOut
+ int nIn, const void *pIn,
+ int *pnOut, void **ppOut
);
/*
@@ -12136,30 +12418,30 @@ SQLITE_API int sqlite3rebaser_rebase(
** should be one call to this function for each successful invocation
** of sqlite3rebaser_create().
*/
-SQLITE_API void sqlite3rebaser_delete(sqlite3_rebaser *p);
+SQLITE_API void sqlite3rebaser_delete(sqlite3_rebaser *p);
/*
** CAPI3REF: Streaming Versions of API functions.
**
-** The six streaming API xxx_strm() functions serve similar purposes to the
+** The six streaming API xxx_strm() functions serve similar purposes to the
** corresponding non-streaming API functions:
**
**
** | Streaming function | Non-streaming equivalent |
-**
|---|
| sqlite3changeset_apply_strm | [sqlite3changeset_apply]
-** | | sqlite3changeset_apply_strm_v2 | [sqlite3changeset_apply_v2]
-** | | sqlite3changeset_concat_strm | [sqlite3changeset_concat]
-** | | sqlite3changeset_invert_strm | [sqlite3changeset_invert]
-** | | sqlite3changeset_start_strm | [sqlite3changeset_start]
-** | | sqlite3session_changeset_strm | [sqlite3session_changeset]
-** | | sqlite3session_patchset_strm | [sqlite3session_patchset]
+** | | sqlite3changeset_apply_strm | [sqlite3changeset_apply]
+** | | sqlite3changeset_apply_strm_v2 | [sqlite3changeset_apply_v2]
+** | | sqlite3changeset_concat_strm | [sqlite3changeset_concat]
+** | | sqlite3changeset_invert_strm | [sqlite3changeset_invert]
+** | | sqlite3changeset_start_strm | [sqlite3changeset_start]
+** | | sqlite3session_changeset_strm | [sqlite3session_changeset]
+** | | sqlite3session_patchset_strm | [sqlite3session_patchset]
** |
**
** Non-streaming functions that accept changesets (or patchsets) as input
-** require that the entire changeset be stored in a single buffer in memory.
-** Similarly, those that return a changeset or patchset do so by returning
-** a pointer to a single large buffer allocated using sqlite3_malloc().
-** Normally this is convenient. However, if an application running in a
+** require that the entire changeset be stored in a single buffer in memory.
+** Similarly, those that return a changeset or patchset do so by returning
+** a pointer to a single large buffer allocated using sqlite3_malloc().
+** Normally this is convenient. However, if an application running in a
** low-memory environment is required to handle very large changesets, the
** large contiguous memory allocations required can become onerous.
**
@@ -12181,12 +12463,12 @@ SQLITE_API void sqlite3rebaser_delete(sqlite3_rebaser *p);
**
**
** Each time the xInput callback is invoked by the sessions module, the first
-** argument passed is a copy of the supplied pIn context pointer. The second
-** argument, pData, points to a buffer (*pnData) bytes in size. Assuming no
-** error occurs the xInput method should copy up to (*pnData) bytes of data
-** into the buffer and set (*pnData) to the actual number of bytes copied
-** before returning SQLITE_OK. If the input is completely exhausted, (*pnData)
-** should be set to zero to indicate this. Or, if an error occurs, an SQLite
+** argument passed is a copy of the supplied pIn context pointer. The second
+** argument, pData, points to a buffer (*pnData) bytes in size. Assuming no
+** error occurs the xInput method should copy up to (*pnData) bytes of data
+** into the buffer and set (*pnData) to the actual number of bytes copied
+** before returning SQLITE_OK. If the input is completely exhausted, (*pnData)
+** should be set to zero to indicate this. Or, if an error occurs, an SQLite
** error code should be returned. In all cases, if an xInput callback returns
** an error, all processing is abandoned and the streaming API function
** returns a copy of the error code to the caller.
@@ -12194,7 +12476,7 @@ SQLITE_API void sqlite3rebaser_delete(sqlite3_rebaser *p);
** In the case of sqlite3changeset_start_strm(), the xInput callback may be
** invoked by the sessions module at any point during the lifetime of the
** iterator. If such an xInput callback returns an error, the iterator enters
-** an error state, whereby all subsequent calls to iterator functions
+** an error state, whereby all subsequent calls to iterator functions
** immediately fail with the same error code as returned by xInput.
**
** Similarly, streaming API functions that return changesets (or patchsets)
@@ -12224,7 +12506,7 @@ SQLITE_API void sqlite3rebaser_delete(sqlite3_rebaser *p);
** is immediately abandoned and the streaming API function returns a copy
** of the xOutput error code to the application.
**
-** The sessions module never invokes an xOutput callback with the third
+** The sessions module never invokes an xOutput callback with the third
** parameter set to a value less than or equal to zero. Other than this,
** no guarantees are made as to the size of the chunks of data returned.
*/
@@ -12295,12 +12577,12 @@ SQLITE_API int sqlite3session_patchset_strm(
int (*xOutput)(void *pOut, const void *pData, int nData),
void *pOut
);
-SQLITE_API int sqlite3changegroup_add_strm(sqlite3_changegroup*,
+SQLITE_API int sqlite3changegroup_add_strm(sqlite3_changegroup*,
int (*xInput)(void *pIn, void *pData, int *pnData),
void *pIn
);
SQLITE_API int sqlite3changegroup_output_strm(sqlite3_changegroup*,
- int (*xOutput)(void *pOut, const void *pData, int nData),
+ int (*xOutput)(void *pOut, const void *pData, int nData),
void *pOut
);
SQLITE_API int sqlite3rebaser_rebase_strm(
@@ -12315,16 +12597,16 @@ SQLITE_API int sqlite3rebaser_rebase_strm(
** CAPI3REF: Configure global parameters
**
** The sqlite3session_config() interface is used to make global configuration
-** changes to the sessions module in order to tune it to the specific needs
+** changes to the sessions module in order to tune it to the specific needs
** of the application.
**
** The sqlite3session_config() interface is not threadsafe. If it is invoked
** while any other thread is inside any other sessions method then the
** results are undefined. Furthermore, if it is invoked after any sessions
-** related objects have been created, the results are also undefined.
+** related objects have been created, the results are also undefined.
**
** The first argument to the sqlite3session_config() function must be one
-** of the SQLITE_SESSION_CONFIG_XXX constants defined below. The
+** of the SQLITE_SESSION_CONFIG_XXX constants defined below. The
** interpretation of the (void*) value passed as the second parameter and
** the effect of calling this function depends on the value of the first
** parameter.
@@ -12374,7 +12656,7 @@ SQLITE_API int sqlite3session_config(int op, void *pArg);
**
******************************************************************************
**
-** Interfaces to extend FTS5. Using the interfaces defined in this file,
+** Interfaces to extend FTS5. Using the interfaces defined in this file,
** FTS5 may be extended with:
**
** * custom tokenizers, and
@@ -12418,19 +12700,19 @@ struct Fts5PhraseIter {
** EXTENSION API FUNCTIONS
**
** xUserData(pFts):
-** Return a copy of the context pointer the extension function was
+** Return a copy of the context pointer the extension function was
** registered with.
**
** xColumnTotalSize(pFts, iCol, pnToken):
** If parameter iCol is less than zero, set output variable *pnToken
** to the total number of tokens in the FTS5 table. Or, if iCol is
** non-negative but less than the number of columns in the table, return
-** the total number of tokens in column iCol, considering all rows in
+** the total number of tokens in column iCol, considering all rows in
** the FTS5 table.
**
** If parameter iCol is greater than or equal to the number of columns
** in the table, SQLITE_RANGE is returned. Or, if an error occurs (e.g.
-** an OOM condition or IO error), an appropriate SQLite error code is
+** an OOM condition or IO error), an appropriate SQLite error code is
** returned.
**
** xColumnCount(pFts):
@@ -12444,7 +12726,7 @@ struct Fts5PhraseIter {
**
** If parameter iCol is greater than or equal to the number of columns
** in the table, SQLITE_RANGE is returned. Or, if an error occurs (e.g.
-** an OOM condition or IO error), an appropriate SQLite error code is
+** an OOM condition or IO error), an appropriate SQLite error code is
** returned.
**
** This function may be quite inefficient if used with an FTS5 table
@@ -12471,8 +12753,8 @@ struct Fts5PhraseIter {
** an error code (i.e. SQLITE_NOMEM) if an error occurs.
**
** This API can be quite slow if used with an FTS5 table created with the
-** "detail=none" or "detail=column" option. If the FTS5 table is created
-** with either "detail=none" or "detail=column" and "content=" option
+** "detail=none" or "detail=column" option. If the FTS5 table is created
+** with either "detail=none" or "detail=column" and "content=" option
** (i.e. if it is a contentless table), then this API always returns 0.
**
** xInst:
@@ -12487,7 +12769,7 @@ struct Fts5PhraseIter {
** code (i.e. SQLITE_NOMEM) if an error occurs.
**
** This API can be quite slow if used with an FTS5 table created with the
-** "detail=none" or "detail=column" option.
+** "detail=none" or "detail=column" option.
**
** xRowid:
** Returns the rowid of the current row.
@@ -12503,11 +12785,11 @@ struct Fts5PhraseIter {
**
** with $p set to a phrase equivalent to the phrase iPhrase of the
** current query is executed. Any column filter that applies to
-** phrase iPhrase of the current query is included in $p. For each
-** row visited, the callback function passed as the fourth argument
-** is invoked. The context and API objects passed to the callback
+** phrase iPhrase of the current query is included in $p. For each
+** row visited, the callback function passed as the fourth argument
+** is invoked. The context and API objects passed to the callback
** function may be used to access the properties of each matched row.
-** Invoking Api.xUserData() returns a copy of the pointer passed as
+** Invoking Api.xUserData() returns a copy of the pointer passed as
** the third argument to pUserData.
**
** If the callback function returns any value other than SQLITE_OK, the
@@ -12522,14 +12804,14 @@ struct Fts5PhraseIter {
**
** xSetAuxdata(pFts5, pAux, xDelete)
**
-** Save the pointer passed as the second argument as the extension functions
+** Save the pointer passed as the second argument as the extension function's
** "auxiliary data". The pointer may then be retrieved by the current or any
** future invocation of the same fts5 extension function made as part of
** the same MATCH query using the xGetAuxdata() API.
**
** Each extension function is allocated a single auxiliary data slot for
-** each FTS query (MATCH expression). If the extension function is invoked
-** more than once for a single FTS query, then all invocations share a
+** each FTS query (MATCH expression). If the extension function is invoked
+** more than once for a single FTS query, then all invocations share a
** single auxiliary data context.
**
** If there is already an auxiliary data pointer when this function is
@@ -12548,7 +12830,7 @@ struct Fts5PhraseIter {
**
** xGetAuxdata(pFts5, bClear)
**
-** Returns the current auxiliary data pointer for the fts5 extension
+** Returns the current auxiliary data pointer for the fts5 extension
** function. See the xSetAuxdata() method for details.
**
** If the bClear argument is non-zero, then the auxiliary data is cleared
@@ -12568,7 +12850,7 @@ struct Fts5PhraseIter {
** method, to iterate through all instances of a single query phrase within
** the current row. This is the same information as is accessible via the
** xInstCount/xInst APIs. While the xInstCount/xInst APIs are more convenient
-** to use, this API may be faster under some circumstances. To iterate
+** to use, this API may be faster under some circumstances. To iterate
** through instances of phrase iPhrase, use the following code:
**
** Fts5PhraseIter iter;
@@ -12586,8 +12868,8 @@ struct Fts5PhraseIter {
** xPhraseFirstColumn() and xPhraseNextColumn() as illustrated below).
**
** This API can be quite slow if used with an FTS5 table created with the
-** "detail=none" or "detail=column" option. If the FTS5 table is created
-** with either "detail=none" or "detail=column" and "content=" option
+** "detail=none" or "detail=column" option. If the FTS5 table is created
+** with either "detail=none" or "detail=column" and "content=" option
** (i.e. if it is a contentless table), then this API always iterates
** through an empty set (all calls to xPhraseFirst() set iCol to -1).
**
@@ -12611,16 +12893,16 @@ struct Fts5PhraseIter {
** }
**
** This API can be quite slow if used with an FTS5 table created with the
-** "detail=none" option. If the FTS5 table is created with either
-** "detail=none" "content=" option (i.e. if it is a contentless table),
-** then this API always iterates through an empty set (all calls to
+** "detail=none" option. If the FTS5 table is created with either
+** "detail=none" "content=" option (i.e. if it is a contentless table),
+** then this API always iterates through an empty set (all calls to
** xPhraseFirstColumn() set iCol to -1).
**
** The information accessed using this API and its companion
** xPhraseFirstColumn() may also be obtained using xPhraseFirst/xPhraseNext
** (or xInst/xInstCount). The chief advantage of this API is that it is
** significantly more efficient than those alternatives when used with
-** "detail=column" tables.
+** "detail=column" tables.
**
** xPhraseNextColumn()
** See xPhraseFirstColumn above.
@@ -12634,7 +12916,7 @@ struct Fts5ExtensionApi {
int (*xRowCount)(Fts5Context*, sqlite3_int64 *pnRow);
int (*xColumnTotalSize)(Fts5Context*, int iCol, sqlite3_int64 *pnToken);
- int (*xTokenize)(Fts5Context*,
+ int (*xTokenize)(Fts5Context*,
const char *pText, int nText, /* Text to tokenize */
void *pCtx, /* Context passed to xToken() */
int (*xToken)(void*, int, const char*, int, int, int) /* Callback */
@@ -12663,15 +12945,15 @@ struct Fts5ExtensionApi {
void (*xPhraseNextColumn)(Fts5Context*, Fts5PhraseIter*, int *piCol);
};
-/*
+/*
** CUSTOM AUXILIARY FUNCTIONS
*************************************************************************/
/*************************************************************************
** CUSTOM TOKENIZERS
**
-** Applications may also register custom tokenizer types. A tokenizer
-** is registered by providing fts5 with a populated instance of the
+** Applications may also register custom tokenizer types. A tokenizer
+** is registered by providing fts5 with a populated instance of the
** following structure. All structure methods must be defined, setting
** any member of the fts5_tokenizer struct to NULL leads to undefined
** behaviour. The structure methods are expected to function as follows:
@@ -12682,16 +12964,16 @@ struct Fts5ExtensionApi {
**
** The first argument passed to this function is a copy of the (void*)
** pointer provided by the application when the fts5_tokenizer object
-** was registered with FTS5 (the third argument to xCreateTokenizer()).
+** was registered with FTS5 (the third argument to xCreateTokenizer()).
** The second and third arguments are an array of nul-terminated strings
** containing the tokenizer arguments, if any, specified following the
** tokenizer name as part of the CREATE VIRTUAL TABLE statement used
** to create the FTS5 table.
**
-** The final argument is an output variable. If successful, (*ppOut)
+** The final argument is an output variable. If successful, (*ppOut)
** should be set to point to the new tokenizer handle and SQLITE_OK
** returned. If an error occurs, some value other than SQLITE_OK should
-** be returned. In this case, fts5 assumes that the final value of *ppOut
+** be returned. In this case, fts5 assumes that the final value of *ppOut
** is undefined.
**
** xDelete:
@@ -12700,7 +12982,7 @@ struct Fts5ExtensionApi {
** be invoked exactly once for each successful call to xCreate().
**
** xTokenize:
-** This function is expected to tokenize the nText byte string indicated
+** This function is expected to tokenize the nText byte string indicated
** by argument pText. pText may or may not be nul-terminated. The first
** argument passed to this function is a pointer to an Fts5Tokenizer object
** returned by an earlier call to xCreate().
@@ -12714,8 +12996,8 @@ struct Fts5ExtensionApi {
** determine the set of tokens to add to (or delete from) the
** FTS index.
**
-** - FTS5_TOKENIZE_QUERY - A MATCH query is being executed
-** against the FTS index. The tokenizer is being called to tokenize
+**
- FTS5_TOKENIZE_QUERY - A MATCH query is being executed
+** against the FTS index. The tokenizer is being called to tokenize
** a bareword or quoted string specified as part of the query.
**
**
- (FTS5_TOKENIZE_QUERY | FTS5_TOKENIZE_PREFIX) - Same as
@@ -12723,10 +13005,10 @@ struct Fts5ExtensionApi {
** followed by a "*" character, indicating that the last token
** returned by the tokenizer will be treated as a token prefix.
**
-**
- FTS5_TOKENIZE_AUX - The tokenizer is being invoked to
+**
- FTS5_TOKENIZE_AUX - The tokenizer is being invoked to
** satisfy an fts5_api.xTokenize() request made by an auxiliary
** function. Or an fts5_api.xColumnSize() request made by the same
-** on a columnsize=0 database.
+** on a columnsize=0 database.
**
**
** For each token in the input string, the supplied callback xToken() must
@@ -12738,10 +13020,10 @@ struct Fts5ExtensionApi {
** which the token is derived within the input.
**
** The second argument passed to the xToken() callback ("tflags") should
-** normally be set to 0. The exception is if the tokenizer supports
+** normally be set to 0. The exception is if the tokenizer supports
** synonyms. In this case see the discussion below for details.
**
-** FTS5 assumes the xToken() callback is invoked for each token in the
+** FTS5 assumes the xToken() callback is invoked for each token in the
** order that they occur within the input text.
**
** If an xToken() callback returns any value other than SQLITE_OK, then
@@ -12755,7 +13037,7 @@ struct Fts5ExtensionApi {
** SYNONYM SUPPORT
**
** Custom tokenizers may also support synonyms. Consider a case in which a
-** user wishes to query for a phrase such as "first place". Using the
+** user wishes to query for a phrase such as "first place". Using the
** built-in tokenizers, the FTS5 query 'first + place' will match instances
** of "first place" within the document set, but not alternative forms
** such as "1st place". In some applications, it would be better to match
@@ -12764,8 +13046,8 @@ struct Fts5ExtensionApi {
**
** There are several ways to approach this in FTS5:
**
-**
- By mapping all synonyms to a single token. In this case, the
-** In the above example, this means that the tokenizer returns the
+**
- By mapping all synonyms to a single token. In this case, using
+** the above example, this means that the tokenizer returns the
** same token for inputs "first" and "1st". Say that token is in
** fact "first", so that when the user inserts the document "I won
** 1st place" entries are added to the index for tokens "i", "won",
@@ -12775,34 +13057,34 @@ struct Fts5ExtensionApi {
**
**
- By querying the index for all synonyms of each query term
** separately. In this case, when tokenizing query text, the
-** tokenizer may provide multiple synonyms for a single term
-** within the document. FTS5 then queries the index for each
+** tokenizer may provide multiple synonyms for a single term
+** within the document. FTS5 then queries the index for each
** synonym individually. For example, faced with the query:
**
**
** ... MATCH 'first place'
**
** the tokenizer offers both "1st" and "first" as synonyms for the
-** first token in the MATCH query and FTS5 effectively runs a query
+** first token in the MATCH query and FTS5 effectively runs a query
** similar to:
**
**
** ... MATCH '(first OR 1st) place'
**
** except that, for the purposes of auxiliary functions, the query
-** still appears to contain just two phrases - "(first OR 1st)"
+** still appears to contain just two phrases - "(first OR 1st)"
** being treated as a single phrase.
**
**
- By adding multiple synonyms for a single term to the FTS index.
** Using this method, when tokenizing document text, the tokenizer
-** provides multiple synonyms for each token. So that when a
+** provides multiple synonyms for each token. So that when a
** document such as "I won first place" is tokenized, entries are
** added to the FTS index for "i", "won", "first", "1st" and
** "place".
**
** This way, even if the tokenizer does not provide synonyms
** when tokenizing query text (it should not - to do so would be
-** inefficient), it doesn't matter if the user queries for
+** inefficient), it doesn't matter if the user queries for
** 'first + place' or '1st + place', as there are entries in the
** FTS index corresponding to both forms of the first token.
**
@@ -12823,11 +13105,11 @@ struct Fts5ExtensionApi {
**
** It is an error to specify the FTS5_TOKEN_COLOCATED flag the first time
** xToken() is called. Multiple synonyms may be specified for a single token
-** by making multiple calls to xToken(FTS5_TOKEN_COLOCATED) in sequence.
+** by making multiple calls to xToken(FTS5_TOKEN_COLOCATED) in sequence.
** There is no limit to the number of synonyms that may be provided for a
** single token.
**
-** In many cases, method (1) above is the best approach. It does not add
+** In many cases, method (1) above is the best approach. It does not add
** extra data to the FTS index or require FTS5 to query for multiple terms,
** so it is efficient in terms of disk space and query speed. However, it
** does not support prefix queries very well. If, as suggested above, the
@@ -12839,18 +13121,18 @@ struct Fts5ExtensionApi {
** will not match documents that contain the token "1st" (as the tokenizer
** will probably not map "1s" to any prefix of "first").
**
-** For full prefix support, method (3) may be preferred. In this case,
+** For full prefix support, method (3) may be preferred. In this case,
** because the index contains entries for both "first" and "1st", prefix
** queries such as 'fi*' or '1s*' will match correctly. However, because
** extra entries are added to the FTS index, this method uses more space
** within the database.
**
** Method (2) offers a midpoint between (1) and (3). Using this method,
-** a query such as '1s*' will match documents that contain the literal
+** a query such as '1s*' will match documents that contain the literal
** token "1st", but not "first" (assuming the tokenizer is not able to
** provide synonyms for prefixes). However, a non-prefix query like '1st'
** will match against "1st" and "first". This method does not require
-** extra disk space, as no extra entries are added to the FTS index.
+** extra disk space, as no extra entries are added to the FTS index.
** On the other hand, it may require more CPU cycles to run MATCH queries,
** as separate queries of the FTS index are required for each synonym.
**
@@ -12864,10 +13146,10 @@ typedef struct fts5_tokenizer fts5_tokenizer;
struct fts5_tokenizer {
int (*xCreate)(void*, const char **azArg, int nArg, Fts5Tokenizer **ppOut);
void (*xDelete)(Fts5Tokenizer*);
- int (*xTokenize)(Fts5Tokenizer*,
+ int (*xTokenize)(Fts5Tokenizer*,
void *pCtx,
int flags, /* Mask of FTS5_TOKENIZE_* flags */
- const char *pText, int nText,
+ const char *pText, int nText,
int (*xToken)(
void *pCtx, /* Copy of 2nd argument to xTokenize() */
int tflags, /* Mask of FTS5_TOKEN_* flags */
@@ -12964,7 +13246,7 @@ struct fts5_api {
** May you share freely, never taking more than you give.
**
*************************************************************************
-**
+**
** This file defines various limits of what SQLite can process.
*/
@@ -13012,9 +13294,9 @@ struct fts5_api {
#endif
/*
-** The maximum depth of an expression tree. This is limited to
-** some extent by SQLITE_MAX_SQL_LENGTH. But sometime you might
-** want to place more severe limits on the complexity of an
+** The maximum depth of an expression tree. This is limited to
+** some extent by SQLITE_MAX_SQL_LENGTH. But sometime you might
+** want to place more severe limits on the complexity of an
** expression.
**
** A value of 0 used to mean that the limit was not enforced.
@@ -13086,9 +13368,12 @@ struct fts5_api {
/*
** The maximum value of a ?nnn wildcard that the parser will accept.
+** If the value exceeds 32767 then extra space is required for the Expr
+** structure. But otherwise, we believe that the number can be as large
+** as a signed 32-bit integer can hold.
*/
#ifndef SQLITE_MAX_VARIABLE_NUMBER
-# define SQLITE_MAX_VARIABLE_NUMBER 999
+# define SQLITE_MAX_VARIABLE_NUMBER 32766
#endif
/* Maximum page size. The upper bound on this value is 65536. This a limit
@@ -13096,10 +13381,10 @@ struct fts5_api {
**
** Earlier versions of SQLite allowed the user to change this value at
** compile time. This is no longer permitted, on the grounds that it creates
-** a library that is technically incompatible with an SQLite library
-** compiled with a different limit. If a process operating on a database
-** with a page-size of 65536 bytes crashes, then an instance of SQLite
-** compiled with the default page-size limit will not be able to rollback
+** a library that is technically incompatible with an SQLite library
+** compiled with a different limit. If a process operating on a database
+** with a page-size of 65536 bytes crashes, then an instance of SQLite
+** compiled with the default page-size limit will not be able to rollback
** the aborted transaction. This could lead to database corruption.
*/
#ifdef SQLITE_MAX_PAGE_SIZE
@@ -13158,7 +13443,7 @@ struct fts5_api {
** Maximum depth of recursion for triggers.
**
** A value of 1 means that a trigger program will not be able to itself
-** fire any triggers. A value of 0 means that no trigger programs at all
+** fire any triggers. A value of 0 means that no trigger programs at all
** may be executed.
*/
#ifndef SQLITE_MAX_TRIGGER_DEPTH
@@ -13177,6 +13462,21 @@ struct fts5_api {
#pragma warn -spa /* Suspicious pointer arithmetic */
#endif
+/*
+** WAL mode depends on atomic aligned 32-bit loads and stores in a few
+** places. The following macros try to make this explicit.
+*/
+#ifndef __has_extension
+# define __has_extension(x) 0 /* compatibility with non-clang compilers */
+#endif
+#if GCC_VERSION>=4007000 || __has_extension(c_atomic)
+# define AtomicLoad(PTR) __atomic_load_n((PTR),__ATOMIC_RELAXED)
+# define AtomicStore(PTR,VAL) __atomic_store_n((PTR),(VAL),__ATOMIC_RELAXED)
+#else
+# define AtomicLoad(PTR) (*(PTR))
+# define AtomicStore(PTR,VAL) (*(PTR) = (VAL))
+#endif
+
/*
** Include standard header files as necessary
*/
@@ -13437,6 +13737,26 @@ SQLITE_PRIVATE void sqlite3Coverage(int);
# define NEVER(X) (X)
#endif
+/*
+** The harmless(X) macro indicates that expression X is usually false
+** but can be true without causing any problems, but we don't know of
+** any way to cause X to be true.
+**
+** In debugging and testing builds, this macro will abort if X is ever
+** true. In this way, developers are alerted to a possible test case
+** that causes X to be true. If a harmless macro ever fails, that is
+** an opportunity to change the macro into a testcase() and add a new
+** test case to the test suite.
+**
+** For normal production builds, harmless(X) is a no-op, since it does
+** not matter whether expression X is true or false.
+*/
+#ifdef SQLITE_DEBUG
+# define harmless(X) assert(!(X));
+#else
+# define harmless(X)
+#endif
+
/*
** Some conditionals are optimizations only. In other words, if the
** conditionals are replaced with a constant 1 (true) or 0 (false) then
@@ -13556,7 +13876,7 @@ typedef struct HashElem HashElem;
** element pointed to plus the next _ht.count-1 elements in the list.
**
** Hash.htsize and Hash.ht may be zero. In that case lookup is done
-** by a linear search of the global list. For small tables, the
+** by a linear search of the global list. For small tables, the
** Hash.ht table is never allocated because if there are few elements
** in the table, it is faster to do a linear search than to manage
** the hash table.
@@ -13571,7 +13891,7 @@ struct Hash {
} *ht;
};
-/* Each element in the hash table is an instance of the following
+/* Each element in the hash table is an instance of the following
** structure. All elements are stored on a single doubly-linked list.
**
** Again, this structure is intended to be opaque, but it can't really
@@ -13920,7 +14240,7 @@ SQLITE_PRIVATE void sqlite3HashClear(Hash*);
#endif
/*
-** The compile-time options SQLITE_MMAP_READWRITE and
+** The compile-time options SQLITE_MMAP_READWRITE and
** SQLITE_ENABLE_BATCH_ATOMIC_WRITE are not compatible with one another.
** You must choose one or the other (or neither) but not both.
*/
@@ -14142,6 +14462,7 @@ typedef INT16_TYPE LogEst;
** compilers.
*/
#define LARGEST_INT64 (0xffffffff|(((i64)0x7fffffff)<<32))
+#define LARGEST_UINT64 (0xffffffff|(((u64)0xffffffff)<<32))
#define SMALLEST_INT64 (((i64)-1) - LARGEST_INT64)
/*
@@ -14219,6 +14540,16 @@ typedef INT16_TYPE LogEst;
#else
# define SELECTTRACE_ENABLED 0
#endif
+#if defined(SQLITE_ENABLE_SELECTTRACE)
+# define SELECTTRACE_ENABLED 1
+# define SELECTTRACE(K,P,S,X) \
+ if(sqlite3_unsupported_selecttrace&(K)) \
+ sqlite3DebugPrintf("%u/%d/%p: ",(S)->selId,(P)->addrExplain,(S)),\
+ sqlite3DebugPrintf X
+#else
+# define SELECTTRACE(K,P,S,X)
+# define SELECTTRACE_ENABLED 0
+#endif
/*
** An instance of the following structure is used to store the busy-handler
@@ -14234,26 +14565,27 @@ struct BusyHandler {
int (*xBusyHandler)(void *,int); /* The busy callback */
void *pBusyArg; /* First arg to busy callback */
int nBusy; /* Incremented with each busy call */
- u8 bExtraFileArg; /* Include sqlite3_file as callback arg */
};
/*
-** Name of the master database table. The master database table
-** is a special table that holds the names and attributes of all
-** user tables and indices.
+** Name of table that holds the database schema.
*/
-#define MASTER_NAME "sqlite_master"
-#define TEMP_MASTER_NAME "sqlite_temp_master"
+#define DFLT_SCHEMA_TABLE "sqlite_master"
+#define DFLT_TEMP_SCHEMA_TABLE "sqlite_temp_master"
+#define ALT_SCHEMA_TABLE "sqlite_schema"
+#define ALT_TEMP_SCHEMA_TABLE "sqlite_temp_schema"
+
/*
-** The root-page of the master database table.
+** The root-page of the schema table.
*/
-#define MASTER_ROOT 1
+#define SCHEMA_ROOT 1
/*
-** The name of the schema table.
+** The name of the schema table. The name is different for TEMP.
*/
-#define SCHEMA_TABLE(x) ((!OMIT_TEMPDB)&&(x==1)?TEMP_MASTER_NAME:MASTER_NAME)
+#define SCHEMA_TABLE(x) \
+ ((!OMIT_TEMPDB)&&(x==1)?DFLT_TEMP_SCHEMA_TABLE:DFLT_SCHEMA_TABLE)
/*
** A convenience macro that returns the number of elements in
@@ -14274,7 +14606,7 @@ struct BusyHandler {
** pointer will work here as long as it is distinct from SQLITE_STATIC
** and SQLITE_TRANSIENT.
*/
-#define SQLITE_DYNAMIC ((sqlite3_destructor_type)sqlite3MallocSize)
+#define SQLITE_DYNAMIC ((sqlite3_destructor_type)sqlite3OomFault)
/*
** When SQLITE_OMIT_WSD is defined, it means that the target platform does
@@ -14397,6 +14729,7 @@ typedef struct With With;
** A bit in a Bitmask
*/
#define MASKBIT(n) (((Bitmask)1)<<(n))
+#define MASKBIT64(n) (((u64)1)<<(n))
#define MASKBIT32(n) (((unsigned int)1)<<(n))
#define ALLBITS ((Bitmask)-1)
@@ -14413,6 +14746,253 @@ typedef int VList;
** "BusyHandler" typedefs. vdbe.h also requires a few of the opaque
** pointer types (i.e. FuncDef) defined above.
*/
+/************** Include pager.h in the middle of sqliteInt.h *****************/
+/************** Begin file pager.h *******************************************/
+/*
+** 2001 September 15
+**
+** The author disclaims copyright to this source code. In place of
+** a legal notice, here is a blessing:
+**
+** May you do good and not evil.
+** May you find forgiveness for yourself and forgive others.
+** May you share freely, never taking more than you give.
+**
+*************************************************************************
+** This header file defines the interface that the sqlite page cache
+** subsystem. The page cache subsystem reads and writes a file a page
+** at a time and provides a journal for rollback.
+*/
+
+#ifndef SQLITE_PAGER_H
+#define SQLITE_PAGER_H
+
+/*
+** Default maximum size for persistent journal files. A negative
+** value means no limit. This value may be overridden using the
+** sqlite3PagerJournalSizeLimit() API. See also "PRAGMA journal_size_limit".
+*/
+#ifndef SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT
+ #define SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT -1
+#endif
+
+/*
+** The type used to represent a page number. The first page in a file
+** is called page 1. 0 is used to represent "not a page".
+*/
+typedef u32 Pgno;
+
+/*
+** Each open file is managed by a separate instance of the "Pager" structure.
+*/
+typedef struct Pager Pager;
+
+/*
+** Handle type for pages.
+*/
+typedef struct PgHdr DbPage;
+
+/*
+** Page number PAGER_MJ_PGNO is never used in an SQLite database (it is
+** reserved for working around a windows/posix incompatibility). It is
+** used in the journal to signify that the remainder of the journal file
+** is devoted to storing a super-journal name - there are no more pages to
+** roll back. See comments for function writeSuperJournal() in pager.c
+** for details.
+*/
+#define PAGER_MJ_PGNO(x) ((Pgno)((PENDING_BYTE/((x)->pageSize))+1))
+
+/*
+** Allowed values for the flags parameter to sqlite3PagerOpen().
+**
+** NOTE: These values must match the corresponding BTREE_ values in btree.h.
+*/
+#define PAGER_OMIT_JOURNAL 0x0001 /* Do not use a rollback journal */
+#define PAGER_MEMORY 0x0002 /* In-memory database */
+
+/*
+** Valid values for the second argument to sqlite3PagerLockingMode().
+*/
+#define PAGER_LOCKINGMODE_QUERY -1
+#define PAGER_LOCKINGMODE_NORMAL 0
+#define PAGER_LOCKINGMODE_EXCLUSIVE 1
+
+/*
+** Numeric constants that encode the journalmode.
+**
+** The numeric values encoded here (other than PAGER_JOURNALMODE_QUERY)
+** are exposed in the API via the "PRAGMA journal_mode" command and
+** therefore cannot be changed without a compatibility break.
+*/
+#define PAGER_JOURNALMODE_QUERY (-1) /* Query the value of journalmode */
+#define PAGER_JOURNALMODE_DELETE 0 /* Commit by deleting journal file */
+#define PAGER_JOURNALMODE_PERSIST 1 /* Commit by zeroing journal header */
+#define PAGER_JOURNALMODE_OFF 2 /* Journal omitted. */
+#define PAGER_JOURNALMODE_TRUNCATE 3 /* Commit by truncating journal */
+#define PAGER_JOURNALMODE_MEMORY 4 /* In-memory journal file */
+#define PAGER_JOURNALMODE_WAL 5 /* Use write-ahead logging */
+
+/*
+** Flags that make up the mask passed to sqlite3PagerGet().
+*/
+#define PAGER_GET_NOCONTENT 0x01 /* Do not load data from disk */
+#define PAGER_GET_READONLY 0x02 /* Read-only page is acceptable */
+
+/*
+** Flags for sqlite3PagerSetFlags()
+**
+** Value constraints (enforced via assert()):
+** PAGER_FULLFSYNC == SQLITE_FullFSync
+** PAGER_CKPT_FULLFSYNC == SQLITE_CkptFullFSync
+** PAGER_CACHE_SPILL == SQLITE_CacheSpill
+*/
+#define PAGER_SYNCHRONOUS_OFF 0x01 /* PRAGMA synchronous=OFF */
+#define PAGER_SYNCHRONOUS_NORMAL 0x02 /* PRAGMA synchronous=NORMAL */
+#define PAGER_SYNCHRONOUS_FULL 0x03 /* PRAGMA synchronous=FULL */
+#define PAGER_SYNCHRONOUS_EXTRA 0x04 /* PRAGMA synchronous=EXTRA */
+#define PAGER_SYNCHRONOUS_MASK 0x07 /* Mask for four values above */
+#define PAGER_FULLFSYNC 0x08 /* PRAGMA fullfsync=ON */
+#define PAGER_CKPT_FULLFSYNC 0x10 /* PRAGMA checkpoint_fullfsync=ON */
+#define PAGER_CACHESPILL 0x20 /* PRAGMA cache_spill=ON */
+#define PAGER_FLAGS_MASK 0x38 /* All above except SYNCHRONOUS */
+
+/*
+** The remainder of this file contains the declarations of the functions
+** that make up the Pager sub-system API. See source code comments for
+** a detailed description of each routine.
+*/
+
+/* Open and close a Pager connection. */
+SQLITE_PRIVATE int sqlite3PagerOpen(
+ sqlite3_vfs*,
+ Pager **ppPager,
+ const char*,
+ int,
+ int,
+ int,
+ void(*)(DbPage*)
+);
+SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager, sqlite3*);
+SQLITE_PRIVATE int sqlite3PagerReadFileheader(Pager*, int, unsigned char*);
+
+/* Functions used to configure a Pager object. */
+SQLITE_PRIVATE void sqlite3PagerSetBusyHandler(Pager*, int(*)(void *), void *);
+SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager*, u32*, int);
+SQLITE_PRIVATE Pgno sqlite3PagerMaxPageCount(Pager*, Pgno);
+SQLITE_PRIVATE void sqlite3PagerSetCachesize(Pager*, int);
+SQLITE_PRIVATE int sqlite3PagerSetSpillsize(Pager*, int);
+SQLITE_PRIVATE void sqlite3PagerSetMmapLimit(Pager *, sqlite3_int64);
+SQLITE_PRIVATE void sqlite3PagerShrink(Pager*);
+SQLITE_PRIVATE void sqlite3PagerSetFlags(Pager*,unsigned);
+SQLITE_PRIVATE int sqlite3PagerLockingMode(Pager *, int);
+SQLITE_PRIVATE int sqlite3PagerSetJournalMode(Pager *, int);
+SQLITE_PRIVATE int sqlite3PagerGetJournalMode(Pager*);
+SQLITE_PRIVATE int sqlite3PagerOkToChangeJournalMode(Pager*);
+SQLITE_PRIVATE i64 sqlite3PagerJournalSizeLimit(Pager *, i64);
+SQLITE_PRIVATE sqlite3_backup **sqlite3PagerBackupPtr(Pager*);
+SQLITE_PRIVATE int sqlite3PagerFlush(Pager*);
+
+/* Functions used to obtain and release page references. */
+SQLITE_PRIVATE int sqlite3PagerGet(Pager *pPager, Pgno pgno, DbPage **ppPage, int clrFlag);
+SQLITE_PRIVATE DbPage *sqlite3PagerLookup(Pager *pPager, Pgno pgno);
+SQLITE_PRIVATE void sqlite3PagerRef(DbPage*);
+SQLITE_PRIVATE void sqlite3PagerUnref(DbPage*);
+SQLITE_PRIVATE void sqlite3PagerUnrefNotNull(DbPage*);
+SQLITE_PRIVATE void sqlite3PagerUnrefPageOne(DbPage*);
+
+/* Operations on page references. */
+SQLITE_PRIVATE int sqlite3PagerWrite(DbPage*);
+SQLITE_PRIVATE void sqlite3PagerDontWrite(DbPage*);
+SQLITE_PRIVATE int sqlite3PagerMovepage(Pager*,DbPage*,Pgno,int);
+SQLITE_PRIVATE int sqlite3PagerPageRefcount(DbPage*);
+SQLITE_PRIVATE void *sqlite3PagerGetData(DbPage *);
+SQLITE_PRIVATE void *sqlite3PagerGetExtra(DbPage *);
+
+/* Functions used to manage pager transactions and savepoints. */
+SQLITE_PRIVATE void sqlite3PagerPagecount(Pager*, int*);
+SQLITE_PRIVATE int sqlite3PagerBegin(Pager*, int exFlag, int);
+SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(Pager*,const char *zSuper, int);
+SQLITE_PRIVATE int sqlite3PagerExclusiveLock(Pager*);
+SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager, const char *zSuper);
+SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager*);
+SQLITE_PRIVATE int sqlite3PagerRollback(Pager*);
+SQLITE_PRIVATE int sqlite3PagerOpenSavepoint(Pager *pPager, int n);
+SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint);
+SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager);
+
+#ifndef SQLITE_OMIT_WAL
+SQLITE_PRIVATE int sqlite3PagerCheckpoint(Pager *pPager, sqlite3*, int, int*, int*);
+SQLITE_PRIVATE int sqlite3PagerWalSupported(Pager *pPager);
+SQLITE_PRIVATE int sqlite3PagerWalCallback(Pager *pPager);
+SQLITE_PRIVATE int sqlite3PagerOpenWal(Pager *pPager, int *pisOpen);
+SQLITE_PRIVATE int sqlite3PagerCloseWal(Pager *pPager, sqlite3*);
+# ifdef SQLITE_ENABLE_SNAPSHOT
+SQLITE_PRIVATE int sqlite3PagerSnapshotGet(Pager*, sqlite3_snapshot **ppSnapshot);
+SQLITE_PRIVATE int sqlite3PagerSnapshotOpen(Pager*, sqlite3_snapshot *pSnapshot);
+SQLITE_PRIVATE int sqlite3PagerSnapshotRecover(Pager *pPager);
+SQLITE_PRIVATE int sqlite3PagerSnapshotCheck(Pager *pPager, sqlite3_snapshot *pSnapshot);
+SQLITE_PRIVATE void sqlite3PagerSnapshotUnlock(Pager *pPager);
+# endif
+#endif
+
+#if !defined(SQLITE_OMIT_WAL) && defined(SQLITE_ENABLE_SETLK_TIMEOUT)
+SQLITE_PRIVATE int sqlite3PagerWalWriteLock(Pager*, int);
+SQLITE_PRIVATE void sqlite3PagerWalDb(Pager*, sqlite3*);
+#else
+# define sqlite3PagerWalWriteLock(y,z) SQLITE_OK
+# define sqlite3PagerWalDb(x,y)
+#endif
+
+#ifdef SQLITE_DIRECT_OVERFLOW_READ
+SQLITE_PRIVATE int sqlite3PagerDirectReadOk(Pager *pPager, Pgno pgno);
+#endif
+
+#ifdef SQLITE_ENABLE_ZIPVFS
+SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager);
+#endif
+
+/* Functions used to query pager state and configuration. */
+SQLITE_PRIVATE u8 sqlite3PagerIsreadonly(Pager*);
+SQLITE_PRIVATE u32 sqlite3PagerDataVersion(Pager*);
+#ifdef SQLITE_DEBUG
+SQLITE_PRIVATE int sqlite3PagerRefcount(Pager*);
+#endif
+SQLITE_PRIVATE int sqlite3PagerMemUsed(Pager*);
+SQLITE_PRIVATE const char *sqlite3PagerFilename(const Pager*, int);
+SQLITE_PRIVATE sqlite3_vfs *sqlite3PagerVfs(Pager*);
+SQLITE_PRIVATE sqlite3_file *sqlite3PagerFile(Pager*);
+SQLITE_PRIVATE sqlite3_file *sqlite3PagerJrnlFile(Pager*);
+SQLITE_PRIVATE const char *sqlite3PagerJournalname(Pager*);
+SQLITE_PRIVATE void *sqlite3PagerTempSpace(Pager*);
+SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager*);
+SQLITE_PRIVATE void sqlite3PagerCacheStat(Pager *, int, int, int *);
+SQLITE_PRIVATE void sqlite3PagerClearCache(Pager*);
+SQLITE_PRIVATE int sqlite3SectorSize(sqlite3_file *);
+
+/* Functions used to truncate the database file. */
+SQLITE_PRIVATE void sqlite3PagerTruncateImage(Pager*,Pgno);
+
+SQLITE_PRIVATE void sqlite3PagerRekey(DbPage*, Pgno, u16);
+
+/* Functions to support testing and debugging. */
+#if !defined(NDEBUG) || defined(SQLITE_TEST)
+SQLITE_PRIVATE Pgno sqlite3PagerPagenumber(DbPage*);
+SQLITE_PRIVATE int sqlite3PagerIswriteable(DbPage*);
+#endif
+#ifdef SQLITE_TEST
+SQLITE_PRIVATE int *sqlite3PagerStats(Pager*);
+SQLITE_PRIVATE void sqlite3PagerRefdump(Pager*);
+ void disable_simulated_io_errors(void);
+ void enable_simulated_io_errors(void);
+#else
+# define disable_simulated_io_errors()
+# define enable_simulated_io_errors()
+#endif
+
+#endif /* SQLITE_PAGER_H */
+
+/************** End of pager.h ***********************************************/
+/************** Continuing where we left off in sqliteInt.h ******************/
/************** Include btree.h in the middle of sqliteInt.h *****************/
/************** Begin file btree.h *******************************************/
/*
@@ -14488,20 +15068,20 @@ SQLITE_PRIVATE int sqlite3BtreeSetMmapLimit(Btree*,sqlite3_int64);
SQLITE_PRIVATE int sqlite3BtreeSetPagerFlags(Btree*,unsigned);
SQLITE_PRIVATE int sqlite3BtreeSetPageSize(Btree *p, int nPagesize, int nReserve, int eFix);
SQLITE_PRIVATE int sqlite3BtreeGetPageSize(Btree*);
-SQLITE_PRIVATE int sqlite3BtreeMaxPageCount(Btree*,int);
-SQLITE_PRIVATE u32 sqlite3BtreeLastPage(Btree*);
+SQLITE_PRIVATE Pgno sqlite3BtreeMaxPageCount(Btree*,Pgno);
+SQLITE_PRIVATE Pgno sqlite3BtreeLastPage(Btree*);
SQLITE_PRIVATE int sqlite3BtreeSecureDelete(Btree*,int);
-SQLITE_PRIVATE int sqlite3BtreeGetOptimalReserve(Btree*);
+SQLITE_PRIVATE int sqlite3BtreeGetRequestedReserve(Btree*);
SQLITE_PRIVATE int sqlite3BtreeGetReserveNoMutex(Btree *p);
SQLITE_PRIVATE int sqlite3BtreeSetAutoVacuum(Btree *, int);
SQLITE_PRIVATE int sqlite3BtreeGetAutoVacuum(Btree *);
SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree*,int,int*);
-SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree*, const char *zMaster);
+SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree*, const char*);
SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree*, int);
SQLITE_PRIVATE int sqlite3BtreeCommit(Btree*);
SQLITE_PRIVATE int sqlite3BtreeRollback(Btree*,int,int);
SQLITE_PRIVATE int sqlite3BtreeBeginStmt(Btree*,int);
-SQLITE_PRIVATE int sqlite3BtreeCreateTable(Btree*, int*, int flags);
+SQLITE_PRIVATE int sqlite3BtreeCreateTable(Btree*, Pgno*, int flags);
SQLITE_PRIVATE int sqlite3BtreeIsInTrans(Btree*);
SQLITE_PRIVATE int sqlite3BtreeIsInReadTrans(Btree*);
SQLITE_PRIVATE int sqlite3BtreeIsInBackup(Btree*);
@@ -14543,7 +15123,7 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p);
/*
** The second parameter to sqlite3BtreeGetMeta or sqlite3BtreeUpdateMeta
-** should be one of the following values. The integer values are assigned
+** should be one of the following values. The integer values are assigned
** to constants so that the offset of the corresponding field in an
** SQLite database header may be found using the following formula:
**
@@ -14614,7 +15194,7 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p);
#define BTREE_BULKLOAD 0x00000001 /* Used to full index in sorted order */
#define BTREE_SEEK_EQ 0x00000002 /* EQ seeks only - no range seeks */
-/*
+/*
** Flags passed as the third argument to sqlite3BtreeCursor().
**
** For read-only cursors the wrFlag argument is always zero. For read-write
@@ -14642,7 +15222,7 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p);
SQLITE_PRIVATE int sqlite3BtreeCursor(
Btree*, /* BTree containing table to open */
- int iTable, /* Index of root page */
+ Pgno iTable, /* Index of root page */
int wrFlag, /* 1 for writing. 0 for read-only */
struct KeyInfo*, /* First argument to compare function */
BtCursor *pCursor /* Space to write cursor structure */
@@ -14682,7 +15262,7 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor*, u8 flags);
** The nMem field might be zero, indicating that no decomposition is available.
**
** Table btrees (used for rowid tables) contain an integer rowid used as
-** the key and passed in the nKey field. The pKey field is zero.
+** the key and passed in the nKey field. The pKey field is zero.
** pData,nData hold the content of the new entry. nZero extra zero bytes
** are appended to the end of the content when constructing the entry.
** The aMem,nMem fields are uninitialized for table btrees.
@@ -14701,7 +15281,7 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor*, u8 flags);
**
** This object is used to pass information into sqlite3BtreeInsert(). The
** same information used to be passed as five separate parameters. But placing
-** the information into this object helps to keep the interface more
+** the information into this object helps to keep the interface more
** organized and understandable, and it also helps the resulting code to
** run a little faster by using fewer registers for parameter passing.
*/
@@ -14723,6 +15303,8 @@ SQLITE_PRIVATE int sqlite3BtreeNext(BtCursor*, int flags);
SQLITE_PRIVATE int sqlite3BtreeEof(BtCursor*);
SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor*, int flags);
SQLITE_PRIVATE i64 sqlite3BtreeIntegerKey(BtCursor*);
+SQLITE_PRIVATE void sqlite3BtreeCursorPin(BtCursor*);
+SQLITE_PRIVATE void sqlite3BtreeCursorUnpin(BtCursor*);
#ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC
SQLITE_PRIVATE i64 sqlite3BtreeOffset(BtCursor*);
#endif
@@ -14731,7 +15313,7 @@ SQLITE_PRIVATE const void *sqlite3BtreePayloadFetch(BtCursor*, u32 *pAmt);
SQLITE_PRIVATE u32 sqlite3BtreePayloadSize(BtCursor*);
SQLITE_PRIVATE sqlite3_int64 sqlite3BtreeMaxRecordSize(BtCursor*);
-SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(sqlite3*,Btree*,int*aRoot,int nRoot,int,int*);
+SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(sqlite3*,Btree*,Pgno*aRoot,int nRoot,int,int*);
SQLITE_PRIVATE struct Pager *sqlite3BtreePager(Btree*);
SQLITE_PRIVATE i64 sqlite3BtreeRowCountEst(BtCursor*);
@@ -14751,9 +15333,7 @@ SQLITE_PRIVATE int sqlite3BtreeCursorIsValid(BtCursor*);
#endif
SQLITE_PRIVATE int sqlite3BtreeCursorIsValidNN(BtCursor*);
-#ifndef SQLITE_OMIT_BTREECOUNT
SQLITE_PRIVATE int sqlite3BtreeCount(sqlite3*, BtCursor*, i64*);
-#endif
#ifdef SQLITE_TEST
SQLITE_PRIVATE int sqlite3BtreeCursorInfo(BtCursor*, int*, int);
@@ -14776,7 +15356,7 @@ SQLITE_PRIVATE int sqlite3BtreeSharable(Btree*);
SQLITE_PRIVATE void sqlite3BtreeEnterCursor(BtCursor*);
SQLITE_PRIVATE int sqlite3BtreeConnectionCount(Btree*);
#else
-# define sqlite3BtreeEnter(X)
+# define sqlite3BtreeEnter(X)
# define sqlite3BtreeEnterAll(X)
# define sqlite3BtreeSharable(X) 0
# define sqlite3BtreeEnterCursor(X)
@@ -14870,7 +15450,7 @@ struct VdbeOp {
Mem *pMem; /* Used when p4type is P4_MEM */
VTable *pVtab; /* Used when p4type is P4_VTAB */
KeyInfo *pKeyInfo; /* Used when p4type is P4_KEYINFO */
- int *ai; /* Used when p4type is P4_INTARRAY */
+ u32 *ai; /* Used when p4type is P4_INTARRAY */
SubProgram *pProgram; /* Used when p4type is P4_SUBPROGRAM */
Table *pTab; /* Used when p4type is P4_TABLE */
#ifdef SQLITE_ENABLE_CURSOR_HINTS
@@ -14950,7 +15530,7 @@ typedef struct VdbeOpList VdbeOpList;
#define P5_ConstraintFK 4
/*
-** The Vdbe.aColName array contains 5n Mem structures, where n is the
+** The Vdbe.aColName array contains 5n Mem structures, where n is the
** number of columns of data returned by the statement.
*/
#define COLNAME_NAME 0
@@ -15009,30 +15589,30 @@ typedef struct VdbeOpList VdbeOpList;
#define OP_SeekLE 23 /* jump, synopsis: key=r[P3@P4] */
#define OP_SeekGE 24 /* jump, synopsis: key=r[P3@P4] */
#define OP_SeekGT 25 /* jump, synopsis: key=r[P3@P4] */
-#define OP_IfNoHope 26 /* jump, synopsis: key=r[P3@P4] */
-#define OP_NoConflict 27 /* jump, synopsis: key=r[P3@P4] */
-#define OP_NotFound 28 /* jump, synopsis: key=r[P3@P4] */
-#define OP_Found 29 /* jump, synopsis: key=r[P3@P4] */
-#define OP_SeekRowid 30 /* jump, synopsis: intkey=r[P3] */
-#define OP_NotExists 31 /* jump, synopsis: intkey=r[P3] */
-#define OP_Last 32 /* jump */
-#define OP_IfSmaller 33 /* jump */
-#define OP_SorterSort 34 /* jump */
-#define OP_Sort 35 /* jump */
-#define OP_Rewind 36 /* jump */
-#define OP_IdxLE 37 /* jump, synopsis: key=r[P3@P4] */
-#define OP_IdxGT 38 /* jump, synopsis: key=r[P3@P4] */
-#define OP_IdxLT 39 /* jump, synopsis: key=r[P3@P4] */
-#define OP_IdxGE 40 /* jump, synopsis: key=r[P3@P4] */
-#define OP_RowSetRead 41 /* jump, synopsis: r[P3]=rowset(P1) */
-#define OP_RowSetTest 42 /* jump, synopsis: if r[P3] in rowset(P1) goto P2 */
+#define OP_IfNotOpen 26 /* jump, synopsis: if( !csr[P1] ) goto P2 */
+#define OP_IfNoHope 27 /* jump, synopsis: key=r[P3@P4] */
+#define OP_NoConflict 28 /* jump, synopsis: key=r[P3@P4] */
+#define OP_NotFound 29 /* jump, synopsis: key=r[P3@P4] */
+#define OP_Found 30 /* jump, synopsis: key=r[P3@P4] */
+#define OP_SeekRowid 31 /* jump, synopsis: intkey=r[P3] */
+#define OP_NotExists 32 /* jump, synopsis: intkey=r[P3] */
+#define OP_Last 33 /* jump */
+#define OP_IfSmaller 34 /* jump */
+#define OP_SorterSort 35 /* jump */
+#define OP_Sort 36 /* jump */
+#define OP_Rewind 37 /* jump */
+#define OP_IdxLE 38 /* jump, synopsis: key=r[P3@P4] */
+#define OP_IdxGT 39 /* jump, synopsis: key=r[P3@P4] */
+#define OP_IdxLT 40 /* jump, synopsis: key=r[P3@P4] */
+#define OP_IdxGE 41 /* jump, synopsis: key=r[P3@P4] */
+#define OP_RowSetRead 42 /* jump, synopsis: r[P3]=rowset(P1) */
#define OP_Or 43 /* same as TK_OR, synopsis: r[P3]=(r[P1] || r[P2]) */
#define OP_And 44 /* same as TK_AND, synopsis: r[P3]=(r[P1] && r[P2]) */
-#define OP_Program 45 /* jump */
-#define OP_FkIfZero 46 /* jump, synopsis: if fkctr[P1]==0 goto P2 */
-#define OP_IfPos 47 /* jump, synopsis: if r[P1]>0 then r[P1]-=P3, goto P2 */
-#define OP_IfNotZero 48 /* jump, synopsis: if r[P1]!=0 then r[P1]--, goto P2 */
-#define OP_DecrJumpZero 49 /* jump, synopsis: if (--r[P1])==0 goto P2 */
+#define OP_RowSetTest 45 /* jump, synopsis: if r[P3] in rowset(P1) goto P2 */
+#define OP_Program 46 /* jump */
+#define OP_FkIfZero 47 /* jump, synopsis: if fkctr[P1]==0 goto P2 */
+#define OP_IfPos 48 /* jump, synopsis: if r[P1]>0 then r[P1]-=P3, goto P2 */
+#define OP_IfNotZero 49 /* jump, synopsis: if r[P1]!=0 then r[P1]--, goto P2 */
#define OP_IsNull 50 /* jump, same as TK_ISNULL, synopsis: if r[P1]==NULL goto P2 */
#define OP_NotNull 51 /* jump, same as TK_NOTNULL, synopsis: if r[P1]!=NULL goto P2 */
#define OP_Ne 52 /* jump, same as TK_NE, synopsis: IF r[P3]!=r[P1] */
@@ -15042,48 +15622,48 @@ typedef struct VdbeOpList VdbeOpList;
#define OP_Lt 56 /* jump, same as TK_LT, synopsis: IF r[P3]=r[P1] */
#define OP_ElseNotEq 58 /* jump, same as TK_ESCAPE */
-#define OP_IncrVacuum 59 /* jump */
-#define OP_VNext 60 /* jump */
-#define OP_Init 61 /* jump, synopsis: Start at P2 */
-#define OP_PureFunc 62 /* synopsis: r[P3]=func(r[P2@P5]) */
-#define OP_Function 63 /* synopsis: r[P3]=func(r[P2@P5]) */
-#define OP_Return 64
-#define OP_EndCoroutine 65
-#define OP_HaltIfNull 66 /* synopsis: if r[P3]=null halt */
-#define OP_Halt 67
-#define OP_Integer 68 /* synopsis: r[P2]=P1 */
-#define OP_Int64 69 /* synopsis: r[P2]=P4 */
-#define OP_String 70 /* synopsis: r[P2]='P4' (len=P1) */
-#define OP_Null 71 /* synopsis: r[P2..P3]=NULL */
-#define OP_SoftNull 72 /* synopsis: r[P1]=NULL */
-#define OP_Blob 73 /* synopsis: r[P2]=P4 (len=P1) */
-#define OP_Variable 74 /* synopsis: r[P2]=parameter(P1,P4) */
-#define OP_Move 75 /* synopsis: r[P2@P3]=r[P1@P3] */
-#define OP_Copy 76 /* synopsis: r[P2@P3+1]=r[P1@P3+1] */
-#define OP_SCopy 77 /* synopsis: r[P2]=r[P1] */
-#define OP_IntCopy 78 /* synopsis: r[P2]=r[P1] */
-#define OP_ResultRow 79 /* synopsis: output=r[P1@P2] */
-#define OP_CollSeq 80
-#define OP_AddImm 81 /* synopsis: r[P1]=r[P1]+P2 */
-#define OP_RealAffinity 82
-#define OP_Cast 83 /* synopsis: affinity(r[P1]) */
-#define OP_Permutation 84
-#define OP_Compare 85 /* synopsis: r[P1@P3] <-> r[P2@P3] */
-#define OP_IsTrue 86 /* synopsis: r[P2] = coalesce(r[P1]==TRUE,P3) ^ P4 */
-#define OP_Offset 87 /* synopsis: r[P3] = sqlite_offset(P1) */
-#define OP_Column 88 /* synopsis: r[P3]=PX */
-#define OP_Affinity 89 /* synopsis: affinity(r[P1@P2]) */
-#define OP_MakeRecord 90 /* synopsis: r[P3]=mkrec(r[P1@P2]) */
-#define OP_Count 91 /* synopsis: r[P2]=count() */
-#define OP_ReadCookie 92
-#define OP_SetCookie 93
-#define OP_ReopenIdx 94 /* synopsis: root=P2 iDb=P3 */
-#define OP_OpenRead 95 /* synopsis: root=P2 iDb=P3 */
-#define OP_OpenWrite 96 /* synopsis: root=P2 iDb=P3 */
-#define OP_OpenDup 97
-#define OP_OpenAutoindex 98 /* synopsis: nColumn=P2 */
-#define OP_OpenEphemeral 99 /* synopsis: nColumn=P2 */
-#define OP_SorterOpen 100
+#define OP_DecrJumpZero 59 /* jump, synopsis: if (--r[P1])==0 goto P2 */
+#define OP_IncrVacuum 60 /* jump */
+#define OP_VNext 61 /* jump */
+#define OP_Init 62 /* jump, synopsis: Start at P2 */
+#define OP_PureFunc 63 /* synopsis: r[P3]=func(r[P2@NP]) */
+#define OP_Function 64 /* synopsis: r[P3]=func(r[P2@NP]) */
+#define OP_Return 65
+#define OP_EndCoroutine 66
+#define OP_HaltIfNull 67 /* synopsis: if r[P3]=null halt */
+#define OP_Halt 68
+#define OP_Integer 69 /* synopsis: r[P2]=P1 */
+#define OP_Int64 70 /* synopsis: r[P2]=P4 */
+#define OP_String 71 /* synopsis: r[P2]='P4' (len=P1) */
+#define OP_Null 72 /* synopsis: r[P2..P3]=NULL */
+#define OP_SoftNull 73 /* synopsis: r[P1]=NULL */
+#define OP_Blob 74 /* synopsis: r[P2]=P4 (len=P1) */
+#define OP_Variable 75 /* synopsis: r[P2]=parameter(P1,P4) */
+#define OP_Move 76 /* synopsis: r[P2@P3]=r[P1@P3] */
+#define OP_Copy 77 /* synopsis: r[P2@P3+1]=r[P1@P3+1] */
+#define OP_SCopy 78 /* synopsis: r[P2]=r[P1] */
+#define OP_IntCopy 79 /* synopsis: r[P2]=r[P1] */
+#define OP_ResultRow 80 /* synopsis: output=r[P1@P2] */
+#define OP_CollSeq 81
+#define OP_AddImm 82 /* synopsis: r[P1]=r[P1]+P2 */
+#define OP_RealAffinity 83
+#define OP_Cast 84 /* synopsis: affinity(r[P1]) */
+#define OP_Permutation 85
+#define OP_Compare 86 /* synopsis: r[P1@P3] <-> r[P2@P3] */
+#define OP_IsTrue 87 /* synopsis: r[P2] = coalesce(r[P1]==TRUE,P3) ^ P4 */
+#define OP_Offset 88 /* synopsis: r[P3] = sqlite_offset(P1) */
+#define OP_Column 89 /* synopsis: r[P3]=PX */
+#define OP_Affinity 90 /* synopsis: affinity(r[P1@P2]) */
+#define OP_MakeRecord 91 /* synopsis: r[P3]=mkrec(r[P1@P2]) */
+#define OP_Count 92 /* synopsis: r[P2]=count() */
+#define OP_ReadCookie 93
+#define OP_SetCookie 94
+#define OP_ReopenIdx 95 /* synopsis: root=P2 iDb=P3 */
+#define OP_OpenRead 96 /* synopsis: root=P2 iDb=P3 */
+#define OP_OpenWrite 97 /* synopsis: root=P2 iDb=P3 */
+#define OP_OpenDup 98
+#define OP_OpenAutoindex 99 /* synopsis: nColumn=P2 */
+#define OP_OpenEphemeral 100 /* synopsis: nColumn=P2 */
#define OP_BitAnd 101 /* same as TK_BITAND, synopsis: r[P3]=r[P1]&r[P2] */
#define OP_BitOr 102 /* same as TK_BITOR, synopsis: r[P3]=r[P1]|r[P2] */
#define OP_ShiftLeft 103 /* same as TK_LSHIFT, synopsis: r[P3]=r[P2]<0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1) */
+#define OP_SorterInsert 131 /* synopsis: key=r[P2] */
+#define OP_IdxDelete 132 /* synopsis: key=r[P2@P3] */
+#define OP_DeferredSeek 133 /* synopsis: Move P3 to P1.rowid if needed */
+#define OP_IdxRowid 134 /* synopsis: r[P2]=rowid */
+#define OP_FinishSeek 135
+#define OP_Destroy 136
+#define OP_Clear 137
+#define OP_ResetSorter 138
+#define OP_CreateBtree 139 /* synopsis: r[P2]=root iDb=P1 flags=P3 */
+#define OP_SqlExec 140
+#define OP_ParseSchema 141
+#define OP_LoadAnalysis 142
+#define OP_DropTable 143
+#define OP_DropIndex 144
+#define OP_DropTrigger 145
+#define OP_IntegrityCk 146
+#define OP_RowSetAdd 147 /* synopsis: rowset(P1)=r[P2] */
+#define OP_Param 148
+#define OP_FkCounter 149 /* synopsis: fkctr[P1]+=P2 */
#define OP_Real 150 /* same as TK_FLOAT, synopsis: r[P2]=P4 */
-#define OP_AggInverse 151 /* synopsis: accum=r[P3] inverse(r[P2@P5]) */
-#define OP_AggStep 152 /* synopsis: accum=r[P3] step(r[P2@P5]) */
-#define OP_AggStep1 153 /* synopsis: accum=r[P3] step(r[P2@P5]) */
-#define OP_AggValue 154 /* synopsis: r[P3]=value N=P2 */
-#define OP_AggFinal 155 /* synopsis: accum=r[P1] N=P2 */
-#define OP_Expire 156
-#define OP_TableLock 157 /* synopsis: iDb=P1 root=P2 write=P3 */
-#define OP_VBegin 158
-#define OP_VCreate 159
-#define OP_VDestroy 160
-#define OP_VOpen 161
-#define OP_VColumn 162 /* synopsis: r[P3]=vcolumn(P2) */
-#define OP_VRename 163
-#define OP_Pagecount 164
-#define OP_MaxPgcnt 165
-#define OP_Trace 166
-#define OP_CursorHint 167
-#define OP_Noop 168
-#define OP_Explain 169
-#define OP_Abortable 170
+#define OP_MemMax 151 /* synopsis: r[P1]=max(r[P1],r[P2]) */
+#define OP_OffsetLimit 152 /* synopsis: if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1) */
+#define OP_AggInverse 153 /* synopsis: accum=r[P3] inverse(r[P2@P5]) */
+#define OP_AggStep 154 /* synopsis: accum=r[P3] step(r[P2@P5]) */
+#define OP_AggStep1 155 /* synopsis: accum=r[P3] step(r[P2@P5]) */
+#define OP_AggValue 156 /* synopsis: r[P3]=value N=P2 */
+#define OP_AggFinal 157 /* synopsis: accum=r[P1] N=P2 */
+#define OP_Expire 158
+#define OP_CursorLock 159
+#define OP_CursorUnlock 160
+#define OP_TableLock 161 /* synopsis: iDb=P1 root=P2 write=P3 */
+#define OP_VBegin 162
+#define OP_VCreate 163
+#define OP_VDestroy 164
+#define OP_VOpen 165
+#define OP_VColumn 166 /* synopsis: r[P3]=vcolumn(P2) */
+#define OP_VRename 167
+#define OP_Pagecount 168
+#define OP_MaxPgcnt 169
+#define OP_Trace 170
+#define OP_CursorHint 171
+#define OP_ReleaseReg 172 /* synopsis: release r[P1@P2] mask P3 */
+#define OP_Noop 173
+#define OP_Explain 174
+#define OP_Abortable 175
/* Properties such as "out2" or "jump" that are specified in
** comments following the "case" for each opcode in the vdbe.c
@@ -15169,25 +15754,26 @@ typedef struct VdbeOpList VdbeOpList;
/* 0 */ 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x10,\
/* 8 */ 0x00, 0x01, 0x00, 0x01, 0x01, 0x01, 0x03, 0x03,\
/* 16 */ 0x01, 0x01, 0x03, 0x12, 0x03, 0x01, 0x09, 0x09,\
-/* 24 */ 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09,\
-/* 32 */ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,\
-/* 40 */ 0x01, 0x23, 0x0b, 0x26, 0x26, 0x01, 0x01, 0x03,\
+/* 24 */ 0x09, 0x09, 0x01, 0x09, 0x09, 0x09, 0x09, 0x09,\
+/* 32 */ 0x09, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,\
+/* 40 */ 0x01, 0x01, 0x23, 0x26, 0x26, 0x0b, 0x01, 0x01,\
/* 48 */ 0x03, 0x03, 0x03, 0x03, 0x0b, 0x0b, 0x0b, 0x0b,\
-/* 56 */ 0x0b, 0x0b, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,\
-/* 64 */ 0x02, 0x02, 0x08, 0x00, 0x10, 0x10, 0x10, 0x10,\
-/* 72 */ 0x00, 0x10, 0x10, 0x00, 0x00, 0x10, 0x10, 0x00,\
-/* 80 */ 0x00, 0x02, 0x02, 0x02, 0x00, 0x00, 0x12, 0x20,\
-/* 88 */ 0x00, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00, 0x00,\
+/* 56 */ 0x0b, 0x0b, 0x01, 0x03, 0x01, 0x01, 0x01, 0x00,\
+/* 64 */ 0x00, 0x02, 0x02, 0x08, 0x00, 0x10, 0x10, 0x10,\
+/* 72 */ 0x10, 0x00, 0x10, 0x10, 0x00, 0x00, 0x10, 0x10,\
+/* 80 */ 0x00, 0x00, 0x02, 0x02, 0x02, 0x00, 0x00, 0x12,\
+/* 88 */ 0x20, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00,\
/* 96 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x26, 0x26, 0x26,\
/* 104 */ 0x26, 0x26, 0x26, 0x26, 0x26, 0x26, 0x26, 0x00,\
-/* 112 */ 0x12, 0x00, 0x00, 0x10, 0x00, 0x00, 0x10, 0x10,\
-/* 120 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00,\
-/* 128 */ 0x00, 0x04, 0x04, 0x00, 0x00, 0x10, 0x10, 0x00,\
-/* 136 */ 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
-/* 144 */ 0x00, 0x06, 0x10, 0x00, 0x04, 0x1a, 0x10, 0x00,\
-/* 152 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
-/* 160 */ 0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00,\
-/* 168 */ 0x00, 0x00, 0x00,}
+/* 112 */ 0x12, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x10,\
+/* 120 */ 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,\
+/* 128 */ 0x00, 0x00, 0x04, 0x04, 0x00, 0x00, 0x10, 0x00,\
+/* 136 */ 0x10, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00,\
+/* 144 */ 0x00, 0x00, 0x00, 0x06, 0x10, 0x00, 0x10, 0x04,\
+/* 152 */ 0x1a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
+/* 160 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
+/* 168 */ 0x10, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
+}
/* The sqlite3P2Values() routine is able to run faster if it knows
** the value of the largest JUMP opcode. The smaller the maximum
@@ -15195,7 +15781,7 @@ typedef struct VdbeOpList VdbeOpList;
** generated this include file strives to group all JUMP opcodes
** together near the beginning of the list.
*/
-#define SQLITE_MX_JUMP_OPCODE 61 /* Maximum JUMP opcode */
+#define SQLITE_MX_JUMP_OPCODE 62 /* Maximum JUMP opcode */
/************** End of opcodes.h *********************************************/
/************** Continuing where we left off in vdbe.h ***********************/
@@ -15262,8 +15848,14 @@ SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe*, int addr, int P2);
SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe*, int addr, int P3);
SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe*, u16 P5);
SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe*, int addr);
+SQLITE_PRIVATE void sqlite3VdbeJumpHereOrPopInst(Vdbe*, int addr);
SQLITE_PRIVATE int sqlite3VdbeChangeToNoop(Vdbe*, int addr);
SQLITE_PRIVATE int sqlite3VdbeDeletePriorOpcode(Vdbe*, u8 op);
+#ifdef SQLITE_DEBUG
+SQLITE_PRIVATE void sqlite3VdbeReleaseRegisters(Parse*,int addr, int n, u32 mask, int);
+#else
+# define sqlite3VdbeReleaseRegisters(P,A,N,M,F)
+#endif
SQLITE_PRIVATE void sqlite3VdbeChangeP4(Vdbe*, int addr, const char *zP4, int N);
SQLITE_PRIVATE void sqlite3VdbeAppendP4(Vdbe*, void *pP4, int p4type);
SQLITE_PRIVATE void sqlite3VdbeSetP4KeyInfo(Parse*, Index*);
@@ -15316,6 +15908,9 @@ SQLITE_PRIVATE void sqlite3VdbeLinkSubProgram(Vdbe *, SubProgram *);
SQLITE_PRIVATE int sqlite3VdbeHasSubProgram(Vdbe*);
SQLITE_PRIVATE int sqlite3NotPureFunc(sqlite3_context*);
+#ifdef SQLITE_ENABLE_BYTECODE_VTAB
+SQLITE_PRIVATE int sqlite3VdbeBytecodeVtabInit(sqlite3*);
+#endif
/* Use SQLITE_ENABLE_COMMENTS to enable generation of extra comments on
** each VDBE opcode.
@@ -15420,257 +16015,6 @@ SQLITE_PRIVATE void sqlite3VdbePrintOp(FILE*, int, VdbeOp*);
/************** End of vdbe.h ************************************************/
/************** Continuing where we left off in sqliteInt.h ******************/
-/************** Include pager.h in the middle of sqliteInt.h *****************/
-/************** Begin file pager.h *******************************************/
-/*
-** 2001 September 15
-**
-** The author disclaims copyright to this source code. In place of
-** a legal notice, here is a blessing:
-**
-** May you do good and not evil.
-** May you find forgiveness for yourself and forgive others.
-** May you share freely, never taking more than you give.
-**
-*************************************************************************
-** This header file defines the interface that the sqlite page cache
-** subsystem. The page cache subsystem reads and writes a file a page
-** at a time and provides a journal for rollback.
-*/
-
-#ifndef SQLITE_PAGER_H
-#define SQLITE_PAGER_H
-
-/*
-** Default maximum size for persistent journal files. A negative
-** value means no limit. This value may be overridden using the
-** sqlite3PagerJournalSizeLimit() API. See also "PRAGMA journal_size_limit".
-*/
-#ifndef SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT
- #define SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT -1
-#endif
-
-/*
-** The type used to represent a page number. The first page in a file
-** is called page 1. 0 is used to represent "not a page".
-*/
-typedef u32 Pgno;
-
-/*
-** Each open file is managed by a separate instance of the "Pager" structure.
-*/
-typedef struct Pager Pager;
-
-/*
-** Handle type for pages.
-*/
-typedef struct PgHdr DbPage;
-
-/*
-** Page number PAGER_MJ_PGNO is never used in an SQLite database (it is
-** reserved for working around a windows/posix incompatibility). It is
-** used in the journal to signify that the remainder of the journal file
-** is devoted to storing a master journal name - there are no more pages to
-** roll back. See comments for function writeMasterJournal() in pager.c
-** for details.
-*/
-#define PAGER_MJ_PGNO(x) ((Pgno)((PENDING_BYTE/((x)->pageSize))+1))
-
-/*
-** Allowed values for the flags parameter to sqlite3PagerOpen().
-**
-** NOTE: These values must match the corresponding BTREE_ values in btree.h.
-*/
-#define PAGER_OMIT_JOURNAL 0x0001 /* Do not use a rollback journal */
-#define PAGER_MEMORY 0x0002 /* In-memory database */
-
-/*
-** Valid values for the second argument to sqlite3PagerLockingMode().
-*/
-#define PAGER_LOCKINGMODE_QUERY -1
-#define PAGER_LOCKINGMODE_NORMAL 0
-#define PAGER_LOCKINGMODE_EXCLUSIVE 1
-
-/*
-** Numeric constants that encode the journalmode.
-**
-** The numeric values encoded here (other than PAGER_JOURNALMODE_QUERY)
-** are exposed in the API via the "PRAGMA journal_mode" command and
-** therefore cannot be changed without a compatibility break.
-*/
-#define PAGER_JOURNALMODE_QUERY (-1) /* Query the value of journalmode */
-#define PAGER_JOURNALMODE_DELETE 0 /* Commit by deleting journal file */
-#define PAGER_JOURNALMODE_PERSIST 1 /* Commit by zeroing journal header */
-#define PAGER_JOURNALMODE_OFF 2 /* Journal omitted. */
-#define PAGER_JOURNALMODE_TRUNCATE 3 /* Commit by truncating journal */
-#define PAGER_JOURNALMODE_MEMORY 4 /* In-memory journal file */
-#define PAGER_JOURNALMODE_WAL 5 /* Use write-ahead logging */
-
-/*
-** Flags that make up the mask passed to sqlite3PagerGet().
-*/
-#define PAGER_GET_NOCONTENT 0x01 /* Do not load data from disk */
-#define PAGER_GET_READONLY 0x02 /* Read-only page is acceptable */
-
-/*
-** Flags for sqlite3PagerSetFlags()
-**
-** Value constraints (enforced via assert()):
-** PAGER_FULLFSYNC == SQLITE_FullFSync
-** PAGER_CKPT_FULLFSYNC == SQLITE_CkptFullFSync
-** PAGER_CACHE_SPILL == SQLITE_CacheSpill
-*/
-#define PAGER_SYNCHRONOUS_OFF 0x01 /* PRAGMA synchronous=OFF */
-#define PAGER_SYNCHRONOUS_NORMAL 0x02 /* PRAGMA synchronous=NORMAL */
-#define PAGER_SYNCHRONOUS_FULL 0x03 /* PRAGMA synchronous=FULL */
-#define PAGER_SYNCHRONOUS_EXTRA 0x04 /* PRAGMA synchronous=EXTRA */
-#define PAGER_SYNCHRONOUS_MASK 0x07 /* Mask for four values above */
-#define PAGER_FULLFSYNC 0x08 /* PRAGMA fullfsync=ON */
-#define PAGER_CKPT_FULLFSYNC 0x10 /* PRAGMA checkpoint_fullfsync=ON */
-#define PAGER_CACHESPILL 0x20 /* PRAGMA cache_spill=ON */
-#define PAGER_FLAGS_MASK 0x38 /* All above except SYNCHRONOUS */
-
-/*
-** The remainder of this file contains the declarations of the functions
-** that make up the Pager sub-system API. See source code comments for
-** a detailed description of each routine.
-*/
-
-/* Open and close a Pager connection. */
-SQLITE_PRIVATE int sqlite3PagerOpen(
- sqlite3_vfs*,
- Pager **ppPager,
- const char*,
- int,
- int,
- int,
- void(*)(DbPage*)
-);
-SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager, sqlite3*);
-SQLITE_PRIVATE int sqlite3PagerReadFileheader(Pager*, int, unsigned char*);
-
-/* Functions used to configure a Pager object. */
-SQLITE_PRIVATE void sqlite3PagerSetBusyHandler(Pager*, int(*)(void *), void *);
-SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager*, u32*, int);
-#ifdef SQLITE_HAS_CODEC
-SQLITE_PRIVATE void sqlite3PagerAlignReserve(Pager*,Pager*);
-#endif
-SQLITE_PRIVATE int sqlite3PagerMaxPageCount(Pager*, int);
-SQLITE_PRIVATE void sqlite3PagerSetCachesize(Pager*, int);
-SQLITE_PRIVATE int sqlite3PagerSetSpillsize(Pager*, int);
-SQLITE_PRIVATE void sqlite3PagerSetMmapLimit(Pager *, sqlite3_int64);
-SQLITE_PRIVATE void sqlite3PagerShrink(Pager*);
-SQLITE_PRIVATE void sqlite3PagerSetFlags(Pager*,unsigned);
-SQLITE_PRIVATE int sqlite3PagerLockingMode(Pager *, int);
-SQLITE_PRIVATE int sqlite3PagerSetJournalMode(Pager *, int);
-SQLITE_PRIVATE int sqlite3PagerGetJournalMode(Pager*);
-SQLITE_PRIVATE int sqlite3PagerOkToChangeJournalMode(Pager*);
-SQLITE_PRIVATE i64 sqlite3PagerJournalSizeLimit(Pager *, i64);
-SQLITE_PRIVATE sqlite3_backup **sqlite3PagerBackupPtr(Pager*);
-SQLITE_PRIVATE int sqlite3PagerFlush(Pager*);
-
-/* Functions used to obtain and release page references. */
-SQLITE_PRIVATE int sqlite3PagerGet(Pager *pPager, Pgno pgno, DbPage **ppPage, int clrFlag);
-SQLITE_PRIVATE DbPage *sqlite3PagerLookup(Pager *pPager, Pgno pgno);
-SQLITE_PRIVATE void sqlite3PagerRef(DbPage*);
-SQLITE_PRIVATE void sqlite3PagerUnref(DbPage*);
-SQLITE_PRIVATE void sqlite3PagerUnrefNotNull(DbPage*);
-SQLITE_PRIVATE void sqlite3PagerUnrefPageOne(DbPage*);
-
-/* Operations on page references. */
-SQLITE_PRIVATE int sqlite3PagerWrite(DbPage*);
-SQLITE_PRIVATE void sqlite3PagerDontWrite(DbPage*);
-SQLITE_PRIVATE int sqlite3PagerMovepage(Pager*,DbPage*,Pgno,int);
-SQLITE_PRIVATE int sqlite3PagerPageRefcount(DbPage*);
-SQLITE_PRIVATE void *sqlite3PagerGetData(DbPage *);
-SQLITE_PRIVATE void *sqlite3PagerGetExtra(DbPage *);
-
-/* Functions used to manage pager transactions and savepoints. */
-SQLITE_PRIVATE void sqlite3PagerPagecount(Pager*, int*);
-SQLITE_PRIVATE int sqlite3PagerBegin(Pager*, int exFlag, int);
-SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(Pager*,const char *zMaster, int);
-SQLITE_PRIVATE int sqlite3PagerExclusiveLock(Pager*);
-SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager, const char *zMaster);
-SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager*);
-SQLITE_PRIVATE int sqlite3PagerRollback(Pager*);
-SQLITE_PRIVATE int sqlite3PagerOpenSavepoint(Pager *pPager, int n);
-SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint);
-SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager);
-
-#ifndef SQLITE_OMIT_WAL
-SQLITE_PRIVATE int sqlite3PagerCheckpoint(Pager *pPager, sqlite3*, int, int*, int*);
-SQLITE_PRIVATE int sqlite3PagerWalSupported(Pager *pPager);
-SQLITE_PRIVATE int sqlite3PagerWalCallback(Pager *pPager);
-SQLITE_PRIVATE int sqlite3PagerOpenWal(Pager *pPager, int *pisOpen);
-SQLITE_PRIVATE int sqlite3PagerCloseWal(Pager *pPager, sqlite3*);
-# ifdef SQLITE_ENABLE_SNAPSHOT
-SQLITE_PRIVATE int sqlite3PagerSnapshotGet(Pager *pPager, sqlite3_snapshot **ppSnapshot);
-SQLITE_PRIVATE int sqlite3PagerSnapshotOpen(Pager *pPager, sqlite3_snapshot *pSnapshot);
-SQLITE_PRIVATE int sqlite3PagerSnapshotRecover(Pager *pPager);
-SQLITE_PRIVATE int sqlite3PagerSnapshotCheck(Pager *pPager, sqlite3_snapshot *pSnapshot);
-SQLITE_PRIVATE void sqlite3PagerSnapshotUnlock(Pager *pPager);
-# endif
-#endif
-
-#ifdef SQLITE_DIRECT_OVERFLOW_READ
-SQLITE_PRIVATE int sqlite3PagerDirectReadOk(Pager *pPager, Pgno pgno);
-#endif
-
-#ifdef SQLITE_ENABLE_ZIPVFS
-SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager);
-#endif
-
-/* Functions used to query pager state and configuration. */
-SQLITE_PRIVATE u8 sqlite3PagerIsreadonly(Pager*);
-SQLITE_PRIVATE u32 sqlite3PagerDataVersion(Pager*);
-#ifdef SQLITE_DEBUG
-SQLITE_PRIVATE int sqlite3PagerRefcount(Pager*);
-#endif
-SQLITE_PRIVATE int sqlite3PagerMemUsed(Pager*);
-SQLITE_PRIVATE const char *sqlite3PagerFilename(Pager*, int);
-SQLITE_PRIVATE sqlite3_vfs *sqlite3PagerVfs(Pager*);
-SQLITE_PRIVATE sqlite3_file *sqlite3PagerFile(Pager*);
-SQLITE_PRIVATE sqlite3_file *sqlite3PagerJrnlFile(Pager*);
-SQLITE_PRIVATE const char *sqlite3PagerJournalname(Pager*);
-SQLITE_PRIVATE void *sqlite3PagerTempSpace(Pager*);
-SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager*);
-SQLITE_PRIVATE void sqlite3PagerCacheStat(Pager *, int, int, int *);
-SQLITE_PRIVATE void sqlite3PagerClearCache(Pager*);
-SQLITE_PRIVATE int sqlite3SectorSize(sqlite3_file *);
-#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
-SQLITE_PRIVATE void sqlite3PagerResetLockTimeout(Pager *pPager);
-#else
-# define sqlite3PagerResetLockTimeout(X)
-#endif
-
-/* Functions used to truncate the database file. */
-SQLITE_PRIVATE void sqlite3PagerTruncateImage(Pager*,Pgno);
-
-SQLITE_PRIVATE void sqlite3PagerRekey(DbPage*, Pgno, u16);
-
-#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_WAL)
-SQLITE_PRIVATE void *sqlite3PagerCodec(DbPage *);
-#endif
-
-/* Functions to support testing and debugging. */
-#if !defined(NDEBUG) || defined(SQLITE_TEST)
-SQLITE_PRIVATE Pgno sqlite3PagerPagenumber(DbPage*);
-SQLITE_PRIVATE int sqlite3PagerIswriteable(DbPage*);
-#endif
-#ifdef SQLITE_TEST
-SQLITE_PRIVATE int *sqlite3PagerStats(Pager*);
-SQLITE_PRIVATE void sqlite3PagerRefdump(Pager*);
- void disable_simulated_io_errors(void);
- void enable_simulated_io_errors(void);
-#else
-# define disable_simulated_io_errors()
-# define enable_simulated_io_errors()
-#endif
-
-#endif /* SQLITE_PAGER_H */
-
-/************** End of pager.h ***********************************************/
-/************** Continuing where we left off in sqliteInt.h ******************/
/************** Include pcache.h in the middle of sqliteInt.h ****************/
/************** Begin file pcache.h ******************************************/
/*
@@ -15685,7 +16029,7 @@ SQLITE_PRIVATE void sqlite3PagerRefdump(Pager*);
**
*************************************************************************
** This header file defines the interface that the sqlite page cache
-** subsystem.
+** subsystem.
*/
#ifndef _PCACHE_H_
@@ -15711,7 +16055,7 @@ struct PgHdr {
u16 flags; /* PGHDR flags defined below */
/**********************************************************************
- ** Elements above, except pCache, are public. All that follow are
+ ** Elements above, except pCache, are public. All that follow are
** private to pcache.c and should not be accessed by other modules.
** pCache is grouped with the public elements for efficiency.
*/
@@ -15764,7 +16108,7 @@ SQLITE_PRIVATE int sqlite3PcacheSetPageSize(PCache *, int);
SQLITE_PRIVATE int sqlite3PcacheSize(void);
/* One release per successful fetch. Page is pinned until released.
-** Reference counted.
+** Reference counted.
*/
SQLITE_PRIVATE sqlite3_pcache_page *sqlite3PcacheFetch(PCache*, Pgno, int createFlag);
SQLITE_PRIVATE int sqlite3PcacheFetchStress(PCache*, Pgno, sqlite3_pcache_page**);
@@ -15808,7 +16152,7 @@ SQLITE_PRIVATE int sqlite3PcachePagecount(PCache*);
#if defined(SQLITE_CHECK_PAGES) || defined(SQLITE_DEBUG)
/* Iterate through all dirty pages currently stored in the cache. This
-** interface is only available if SQLITE_CHECK_PAGES is defined when the
+** interface is only available if SQLITE_CHECK_PAGES is defined when the
** library is built.
*/
SQLITE_PRIVATE void sqlite3PcacheIterateDirty(PCache *pCache, void (*xIter)(PgHdr *));
@@ -15983,10 +16327,10 @@ SQLITE_PRIVATE int sqlite3PCacheIsDirty(PCache *pCache);
** 2006-10-31: The default prefix used to be "sqlite_". But then
** Mcafee started using SQLite in their anti-virus product and it
** started putting files with the "sqlite" name in the c:/temp folder.
-** This annoyed many windows users. Those users would then do a
+** This annoyed many windows users. Those users would then do a
** Google search for "sqlite", find the telephone numbers of the
** developers and call to wake them up at night and complain.
-** For this reason, the default name prefix is changed to be "sqlite"
+** For this reason, the default name prefix is changed to be "sqlite"
** spelled backwards. So the temp files are still identified, but
** anybody smart enough to figure out the code is also likely smart
** enough to know that calling the developer will not help get rid
@@ -16027,9 +16371,9 @@ SQLITE_PRIVATE int sqlite3PCacheIsDirty(PCache *pCache);
** UnlockFile().
**
** LockFile() prevents not just writing but also reading by other processes.
-** A SHARED_LOCK is obtained by locking a single randomly-chosen
-** byte out of a specific range of bytes. The lock byte is obtained at
-** random so two separate readers can probably access the file at the
+** A SHARED_LOCK is obtained by locking a single randomly-chosen
+** byte out of a specific range of bytes. The lock byte is obtained at
+** random so two separate readers can probably access the file at the
** same time, unless they are unlucky and choose the same lock byte.
** An EXCLUSIVE_LOCK is obtained by locking all bytes in the range.
** There can only be one writer. A RESERVED_LOCK is obtained by locking
@@ -16048,7 +16392,7 @@ SQLITE_PRIVATE int sqlite3PCacheIsDirty(PCache *pCache);
** The following #defines specify the range of bytes used for locking.
** SHARED_SIZE is the number of bytes available in the pool from which
** a random byte is selected for a shared lock. The pool of bytes for
-** shared locks begins at SHARED_FIRST.
+** shared locks begins at SHARED_FIRST.
**
** The same locking strategy and
** byte ranges are used for Unix. This leaves open the possibility of having
@@ -16064,7 +16408,7 @@ SQLITE_PRIVATE int sqlite3PCacheIsDirty(PCache *pCache);
** that all locks will fit on a single page even at the minimum page size.
** PENDING_BYTE defines the beginning of the locks. By default PENDING_BYTE
** is set high so that we don't have to allocate an unused page except
-** for very large databases. But one should test the page skipping logic
+** for very large databases. But one should test the page skipping logic
** by setting PENDING_BYTE low and running the entire regression suite.
**
** Changing the value of PENDING_BYTE results in a subtly incompatible
@@ -16088,8 +16432,8 @@ SQLITE_PRIVATE int sqlite3PCacheIsDirty(PCache *pCache);
*/
SQLITE_PRIVATE int sqlite3OsInit(void);
-/*
-** Functions for accessing sqlite3_file methods
+/*
+** Functions for accessing sqlite3_file methods
*/
SQLITE_PRIVATE void sqlite3OsClose(sqlite3_file*);
SQLITE_PRIVATE int sqlite3OsRead(sqlite3_file*, void*, int amt, i64 offset);
@@ -16115,8 +16459,8 @@ SQLITE_PRIVATE int sqlite3OsFetch(sqlite3_file *id, i64, int, void **);
SQLITE_PRIVATE int sqlite3OsUnfetch(sqlite3_file *, i64, void *);
-/*
-** Functions for accessing sqlite3_vfs methods
+/*
+** Functions for accessing sqlite3_vfs methods
*/
SQLITE_PRIVATE int sqlite3OsOpen(sqlite3_vfs *, const char *, sqlite3_file*, int, int *);
SQLITE_PRIVATE int sqlite3OsDelete(sqlite3_vfs *, const char *, int);
@@ -16134,7 +16478,7 @@ SQLITE_PRIVATE int sqlite3OsGetLastError(sqlite3_vfs*);
SQLITE_PRIVATE int sqlite3OsCurrentTimeInt64(sqlite3_vfs *, sqlite3_int64*);
/*
-** Convenience functions for opening and closing files using
+** Convenience functions for opening and closing files using
** sqlite3_malloc() to obtain space for the file-handle structure.
*/
SQLITE_PRIVATE int sqlite3OsOpenMalloc(sqlite3_vfs *, const char *, sqlite3_file **, int,int*);
@@ -16204,9 +16548,9 @@ SQLITE_PRIVATE void sqlite3OsCloseFree(sqlite3_file *);
*/
#define sqlite3_mutex_alloc(X) ((sqlite3_mutex*)8)
#define sqlite3_mutex_free(X)
-#define sqlite3_mutex_enter(X)
+#define sqlite3_mutex_enter(X)
#define sqlite3_mutex_try(X) SQLITE_OK
-#define sqlite3_mutex_leave(X)
+#define sqlite3_mutex_leave(X)
#define sqlite3_mutex_held(X) ((void)(X),1)
#define sqlite3_mutex_notheld(X) ((void)(X),1)
#define sqlite3MutexAlloc(X) ((sqlite3_mutex*)8)
@@ -16319,7 +16663,6 @@ struct Schema {
*/
#define DB_SchemaLoaded 0x0001 /* The schema has been loaded */
#define DB_UnresetViews 0x0002 /* Some views have defined column names */
-#define DB_Empty 0x0004 /* The file is empty (length 0 bytes) */
#define DB_ResetWanted 0x0008 /* Reset the schema when nSchemaLock==0 */
/*
@@ -16353,6 +16696,25 @@ struct Schema {
** disables lookaside without adding a new test for the bDisable flag
** in a performance-critical path. sz should be set by to szTrue whenever
** bDisable changes back to zero.
+**
+** Lookaside buffers are initially held on the pInit list. As they are
+** used and freed, they are added back to the pFree list. New allocations
+** come off of pFree first, then pInit as a fallback. This dual-list
+** allows use to compute a high-water mark - the maximum number of allocations
+** outstanding at any point in the past - by subtracting the number of
+** allocations on the pInit list from the total number of allocations.
+**
+** Enhancement on 2019-12-12: Two-size-lookaside
+** The default lookaside configuration is 100 slots of 1200 bytes each.
+** The larger slot sizes are important for performance, but they waste
+** a lot of space, as most lookaside allocations are less than 128 bytes.
+** The two-size-lookaside enhancement breaks up the lookaside allocation
+** into two pools: One of 128-byte slots and the other of the default size
+** (1200-byte) slots. Allocations are filled from the small-pool first,
+** failing over to the full-size pool if that does not work. Thus more
+** lookaside slots are available while also using less memory.
+** This enhancement can be omitted by compiling with
+** SQLITE_OMIT_TWOSIZE_LOOKASIDE.
*/
struct Lookaside {
u32 bDisable; /* Only operate the lookaside when zero */
@@ -16363,6 +16725,12 @@ struct Lookaside {
u32 anStat[3]; /* 0: hits. 1: size misses. 2: full misses */
LookasideSlot *pInit; /* List of buffers not previously used */
LookasideSlot *pFree; /* List of available buffers */
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+ LookasideSlot *pSmallInit; /* List of small buffers not prediously used */
+ LookasideSlot *pSmallFree; /* List of available small buffers */
+ void *pMiddle; /* First byte past end of full-size buffers and
+ ** the first byte of LOOKASIDE_SMALL buffers */
+#endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */
void *pStart; /* First byte of available memory space */
void *pEnd; /* First byte past end of available space */
};
@@ -16374,6 +16742,13 @@ struct LookasideSlot {
#define EnableLookaside db->lookaside.bDisable--;\
db->lookaside.sz=db->lookaside.bDisable?0:db->lookaside.szTrue
+/* Size of the smaller allocations in two-size lookside */
+#ifdef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+# define LOOKASIDE_SMALL 0
+#else
+# define LOOKASIDE_SMALL 128
+#endif
+
/*
** A hash table for built-in function definitions. (Application-defined
** functions use a regular table table from hash.h.)
@@ -16445,7 +16820,7 @@ SQLITE_PRIVATE void sqlite3CryptFunc(sqlite3_context*,int,sqlite3_value**);
struct sqlite3 {
sqlite3_vfs *pVfs; /* OS Interface */
struct Vdbe *pVdbe; /* List of active virtual machines */
- CollSeq *pDfltColl; /* The default collating sequence (BINARY) */
+ CollSeq *pDfltColl; /* BINARY collseq for the database encoding */
sqlite3_mutex *mutex; /* Connection mutex */
Db *aDb; /* All backends */
int nDb; /* Number of backends currently in use */
@@ -16479,7 +16854,7 @@ struct sqlite3 {
int aLimit[SQLITE_N_LIMIT]; /* Limits */
int nMaxSorterMmap; /* Maximum size of regions mapped by sorter */
struct sqlite3InitInfo { /* Information used during initialization */
- int newTnum; /* Rootpage of table being initialized */
+ Pgno newTnum; /* Rootpage of table being initialized */
u8 iDb; /* Which db file is being initialized */
u8 busy; /* TRUE if currently initializing */
unsigned orphanTrigger : 1; /* Last statement is orphaned TEMP trigger */
@@ -16494,7 +16869,10 @@ struct sqlite3 {
int nVDestroy; /* Number of active OP_VDestroy operations */
int nExtension; /* Number of loaded extensions */
void **aExtension; /* Array of shared library handles */
- int (*xTrace)(u32,void*,void*,void*); /* Trace function */
+ union {
+ void (*xLegacy)(void*,const char*); /* Legacy trace function */
+ int (*xV2)(u32,void*,void*,void*); /* V2 Trace function */
+ } trace;
void *pTraceArg; /* Argument to the trace function */
#ifndef SQLITE_OMIT_DEPRECATED
void (*xProfile)(void*,const char*,u64); /* Profiling function */
@@ -16548,6 +16926,7 @@ struct sqlite3 {
BusyHandler busyHandler; /* Busy callback */
Db aDbStatic[2]; /* Static space for the 2 default backends */
Savepoint *pSavepoint; /* List of active savepoints */
+ int nAnalysisLimit; /* Number of index rows to ANALYZE */
int busyTimeout; /* Busy handler timeout, in msec */
int nSavepoint; /* Number of non-transaction savepoints */
int nStatement; /* Number of nested statement-transactions */
@@ -16555,7 +16934,7 @@ struct sqlite3 {
i64 nDeferredImmCons; /* Net deferred immediate constraints */
int *pnBytesFreed; /* If not NULL, increment this in DbFree() */
#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY
- /* The following variables are all protected by the STATIC_MASTER
+ /* The following variables are all protected by the STATIC_MAIN
** mutex, not by sqlite3.mutex. They are used by code in notify.c.
**
** When X.pUnlockConnection==Y, that means that X is waiting for Y to
@@ -16582,6 +16961,13 @@ struct sqlite3 {
#define SCHEMA_ENC(db) ((db)->aDb[0].pSchema->enc)
#define ENC(db) ((db)->enc)
+/*
+** A u64 constant where the lower 32 bits are all zeros. Only the
+** upper 32 bits are included in the argument. Necessary because some
+** C-compilers still do not accept LL integer literals.
+*/
+#define HI(X) ((u64)(X)<<32)
+
/*
** Possible values for the sqlite3.flags.
**
@@ -16590,16 +16976,15 @@ struct sqlite3 {
** SQLITE_CkptFullFSync == PAGER_CKPT_FULLFSYNC
** SQLITE_CacheSpill == PAGER_CACHE_SPILL
*/
-#define SQLITE_WriteSchema 0x00000001 /* OK to update SQLITE_MASTER */
+#define SQLITE_WriteSchema 0x00000001 /* OK to update SQLITE_SCHEMA */
#define SQLITE_LegacyFileFmt 0x00000002 /* Create new databases in format 1 */
#define SQLITE_FullColNames 0x00000004 /* Show full column names on SELECT */
#define SQLITE_FullFSync 0x00000008 /* Use full fsync on the backend */
#define SQLITE_CkptFullFSync 0x00000010 /* Use full fsync for checkpoint */
#define SQLITE_CacheSpill 0x00000020 /* OK to spill pager cache */
#define SQLITE_ShortColNames 0x00000040 /* Show short columns names */
-#define SQLITE_CountRows 0x00000080 /* Count rows changed by INSERT, */
- /* DELETE, or UPDATE and return */
- /* the count using a callback. */
+#define SQLITE_TrustedSchema 0x00000080 /* Allow unsafe functions and
+ ** vtabs in the schema definition */
#define SQLITE_NullCallback 0x00000100 /* Invoke the callback once if the */
/* result set is empty */
#define SQLITE_IgnoreChecks 0x00000200 /* Do not enforce check constraints */
@@ -16625,9 +17010,11 @@ struct sqlite3 {
#define SQLITE_DqsDDL 0x20000000 /* dbl-quoted strings allowed in DDL*/
#define SQLITE_DqsDML 0x40000000 /* dbl-quoted strings allowed in DML*/
#define SQLITE_EnableView 0x80000000 /* Enable the use of views */
+#define SQLITE_CountRows HI(0x00001) /* Count rows changed by INSERT, */
+ /* DELETE, or UPDATE and return */
+ /* the count using a callback. */
/* Flags used only if debugging */
-#define HI(X) ((u64)(X)<<32)
#ifdef SQLITE_DEBUG
#define SQLITE_SqlTrace HI(0x0100000) /* Debug print SQL as it executes */
#define SQLITE_VdbeListing HI(0x0200000) /* Debug listings of VDBE progs */
@@ -16645,6 +17032,8 @@ struct sqlite3 {
#define DBFLAG_Vacuum 0x0004 /* Currently in a VACUUM */
#define DBFLAG_VacuumInto 0x0008 /* Currently running VACUUM INTO */
#define DBFLAG_SchemaKnownOk 0x0010 /* Schema is known to be valid */
+#define DBFLAG_InternalFunc 0x0020 /* Allow use of internal functions */
+#define DBFLAG_EncodingFixed 0x0040 /* No longer possible to change enc. */
/*
** Bits of the sqlite3.dbOptFlags field that are used by the
@@ -16752,6 +17141,7 @@ struct FuncDestructor {
** SQLITE_FUNC_TYPEOF == OPFLAG_TYPEOFARG
** SQLITE_FUNC_CONSTANT == SQLITE_DETERMINISTIC from the API
** SQLITE_FUNC_DIRECT == SQLITE_DIRECTONLY from the API
+** SQLITE_FUNC_UNSAFE == SQLITE_INNOCUOUS
** SQLITE_FUNC_ENCMASK depends on SQLITE_UTF* macros in the API
*/
#define SQLITE_FUNC_ENCMASK 0x0003 /* SQLITE_UTF8, SQLITE_UTF16BE or UTF16LE */
@@ -16762,18 +17152,29 @@ struct FuncDestructor {
#define SQLITE_FUNC_LENGTH 0x0040 /* Built-in length() function */
#define SQLITE_FUNC_TYPEOF 0x0080 /* Built-in typeof() function */
#define SQLITE_FUNC_COUNT 0x0100 /* Built-in count(*) aggregate */
-#define SQLITE_FUNC_COALESCE 0x0200 /* Built-in coalesce() or ifnull() */
+/* 0x0200 -- available for reuse */
#define SQLITE_FUNC_UNLIKELY 0x0400 /* Built-in unlikely() function */
#define SQLITE_FUNC_CONSTANT 0x0800 /* Constant inputs give a constant output */
#define SQLITE_FUNC_MINMAX 0x1000 /* True for min() and max() aggregates */
#define SQLITE_FUNC_SLOCHNG 0x2000 /* "Slow Change". Value constant during a
** single query - might change over time */
-#define SQLITE_FUNC_AFFINITY 0x4000 /* Built-in affinity() function */
+#define SQLITE_FUNC_TEST 0x4000 /* Built-in testing functions */
#define SQLITE_FUNC_OFFSET 0x8000 /* Built-in sqlite_offset() function */
#define SQLITE_FUNC_WINDOW 0x00010000 /* Built-in window-only function */
#define SQLITE_FUNC_INTERNAL 0x00040000 /* For use by NestedParse() only */
#define SQLITE_FUNC_DIRECT 0x00080000 /* Not for use in TRIGGERs or VIEWs */
#define SQLITE_FUNC_SUBTYPE 0x00100000 /* Result likely to have sub-type */
+#define SQLITE_FUNC_UNSAFE 0x00200000 /* Function has side effects */
+#define SQLITE_FUNC_INLINE 0x00400000 /* Functions implemented in-line */
+
+/* Identifier numbers for each in-line function */
+#define INLINEFUNC_coalesce 0
+#define INLINEFUNC_implies_nonnull_row 1
+#define INLINEFUNC_expr_implies_expr 2
+#define INLINEFUNC_expr_compare 3
+#define INLINEFUNC_affinity 4
+#define INLINEFUNC_iif 5
+#define INLINEFUNC_unlikely 99 /* Default case */
/*
** The following three macros, FUNCTION(), LIKEFUNC() and AGGREGATE() are
@@ -16789,6 +17190,22 @@ struct FuncDestructor {
** VFUNCTION(zName, nArg, iArg, bNC, xFunc)
** Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag.
**
+** SFUNCTION(zName, nArg, iArg, bNC, xFunc)
+** Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag and
+** adds the SQLITE_DIRECTONLY flag.
+**
+** INLINE_FUNC(zName, nArg, iFuncId, mFlags)
+** zName is the name of a function that is implemented by in-line
+** byte code rather than by the usual callbacks. The iFuncId
+** parameter determines the function id. The mFlags parameter is
+** optional SQLITE_FUNC_ flags for this function.
+**
+** TEST_FUNC(zName, nArg, iFuncId, mFlags)
+** zName is the name of a test-only function implemented by in-line
+** byte code rather than by the usual callbacks. The iFuncId
+** parameter determines the function id. The mFlags parameter is
+** optional SQLITE_FUNC_ flags for this function.
+**
** DFUNCTION(zName, nArg, iArg, bNC, xFunc)
** Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag and
** adds the SQLITE_FUNC_SLOCHNG flag. Used for date & time functions
@@ -16799,7 +17216,7 @@ struct FuncDestructor {
** PURE_DATE(zName, nArg, iArg, bNC, xFunc)
** Used for "pure" date/time functions, this macro is like DFUNCTION
** except that it does set the SQLITE_FUNC_CONSTANT flags. iArg is
-** ignored and the user-data for these functions is set to an
+** ignored and the user-data for these functions is set to an
** arbitrary non-NULL pointer. The bNC parameter is not used.
**
** AGGREGATE(zName, nArg, iArg, bNC, xStep, xFinal)
@@ -16828,6 +17245,16 @@ struct FuncDestructor {
#define VFUNCTION(zName, nArg, iArg, bNC, xFunc) \
{nArg, SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \
SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, 0, #zName, {0} }
+#define SFUNCTION(zName, nArg, iArg, bNC, xFunc) \
+ {nArg, SQLITE_UTF8|SQLITE_DIRECTONLY|SQLITE_FUNC_UNSAFE, \
+ SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, 0, #zName, {0} }
+#define INLINE_FUNC(zName, nArg, iArg, mFlags) \
+ {nArg, SQLITE_UTF8|SQLITE_FUNC_INLINE|SQLITE_FUNC_CONSTANT|(mFlags), \
+ SQLITE_INT_TO_PTR(iArg), 0, noopFunc, 0, 0, 0, #zName, {0} }
+#define TEST_FUNC(zName, nArg, iArg, mFlags) \
+ {nArg, SQLITE_UTF8|SQLITE_FUNC_INTERNAL|SQLITE_FUNC_TEST| \
+ SQLITE_FUNC_INLINE|SQLITE_FUNC_CONSTANT|(mFlags), \
+ SQLITE_INT_TO_PTR(iArg), 0, noopFunc, 0, 0, 0, #zName, {0} }
#define DFUNCTION(zName, nArg, iArg, bNC, xFunc) \
{nArg, SQLITE_FUNC_SLOCHNG|SQLITE_UTF8, \
0, 0, xFunc, 0, 0, 0, #zName, {0} }
@@ -16843,12 +17270,6 @@ struct FuncDestructor {
#define LIKEFUNC(zName, nArg, arg, flags) \
{nArg, SQLITE_FUNC_CONSTANT|SQLITE_UTF8|flags, \
(void *)arg, 0, likeFunc, 0, 0, 0, #zName, {0} }
-#define AGGREGATE(zName, nArg, arg, nc, xStep, xFinal, xValue) \
- {nArg, SQLITE_UTF8|(nc*SQLITE_FUNC_NEEDCOLL), \
- SQLITE_INT_TO_PTR(arg), 0, xStep,xFinal,xValue,0,#zName, {0}}
-#define AGGREGATE2(zName, nArg, arg, nc, xStep, xFinal, extraFlags) \
- {nArg, SQLITE_UTF8|(nc*SQLITE_FUNC_NEEDCOLL)|extraFlags, \
- SQLITE_INT_TO_PTR(arg), 0, xStep,xFinal,xFinal,0,#zName, {0}}
#define WAGGREGATE(zName, nArg, arg, nc, xStep, xFinal, xValue, xInverse, f) \
{nArg, SQLITE_UTF8|(nc*SQLITE_FUNC_NEEDCOLL)|f, \
SQLITE_INT_TO_PTR(arg), 0, xStep,xFinal,xValue,xInverse,#zName, {0}}
@@ -16917,6 +17338,7 @@ struct Column {
u8 notNull; /* An OE_ code for handling a NOT NULL constraint */
char affinity; /* One of the SQLITE_AFF_... values */
u8 szEst; /* Estimated size of value in this column. sizeof(INT)==1 */
+ u8 hName; /* Column name hash for faster lookup */
u16 colFlags; /* Boolean properties. See COLFLAG_ defines below */
};
@@ -17050,10 +17472,17 @@ struct VTable {
sqlite3_vtab *pVtab; /* Pointer to vtab instance */
int nRef; /* Number of pointers to this structure */
u8 bConstraint; /* True if constraints are supported */
+ u8 eVtabRisk; /* Riskiness of allowing hacker access */
int iSavepoint; /* Depth of the SAVEPOINT stack */
VTable *pNext; /* Next in linked list (see above) */
};
+/* Allowed values for VTable.eVtabRisk
+*/
+#define SQLITE_VTABRISK_Low 0
+#define SQLITE_VTABRISK_Normal 1
+#define SQLITE_VTABRISK_High 2
+
/*
** The schema for each SQL table and view is represented in memory
** by an instance of the following structure.
@@ -17067,7 +17496,7 @@ struct Table {
char *zColAff; /* String defining the affinity of each column */
ExprList *pCheck; /* All CHECK constraints */
/* ... also used as column name list in a VIEW */
- int tnum; /* Root BTree page for this table */
+ Pgno tnum; /* Root BTree page for this table */
u32 nTabRef; /* Number of pointers to this Table */
u32 tabFlags; /* Mask of TF_* values */
i16 iPKey; /* If not negative, use aCol[iPKey] as the rowid */
@@ -17129,8 +17558,11 @@ struct Table {
*/
#ifndef SQLITE_OMIT_VIRTUALTABLE
# define IsVirtual(X) ((X)->nModuleArg)
+# define ExprIsVtab(X) \
+ ((X)->op==TK_COLUMN && (X)->y.pTab!=0 && (X)->y.pTab->nModuleArg)
#else
# define IsVirtual(X) 0
+# define ExprIsVtab(X) 0
#endif
/*
@@ -17338,7 +17770,7 @@ struct UnpackedRecord {
** element.
**
** While parsing a CREATE TABLE or CREATE INDEX statement in order to
-** generate VDBE code (as opposed to parsing one read from an sqlite_master
+** generate VDBE code (as opposed to parsing one read from an sqlite_schema
** table as part of parsing an existing database schema), transient instances
** of this structure may be created. In this case the Index.tnum variable is
** used to store the address of a VDBE instruction, not a database page
@@ -17357,7 +17789,7 @@ struct Index {
const char **azColl; /* Array of collation sequence names for index */
Expr *pPartIdxWhere; /* WHERE clause for partial indices */
ExprList *aColExpr; /* Column expressions */
- int tnum; /* DB Page containing root of this index */
+ Pgno tnum; /* DB Page containing root of this index */
LogEst szIdxRow; /* Estimated average row size in bytes */
u16 nKeyCol; /* Number of columns forming the key */
u16 nColumn; /* Number of columns stored in the index */
@@ -17442,7 +17874,7 @@ struct Token {
** code for a SELECT that contains aggregate functions.
**
** If Expr.op==TK_AGG_COLUMN or TK_AGG_FUNCTION then Expr.pAggInfo is a
-** pointer to this structure. The Expr.iColumn field is the index in
+** pointer to this structure. The Expr.iAgg field is the index in
** AggInfo.aCol[] or AggInfo.aFunc[] of information needed to generate
** code for that node.
**
@@ -17462,23 +17894,25 @@ struct AggInfo {
ExprList *pGroupBy; /* The group by clause */
struct AggInfo_col { /* For each column used in source tables */
Table *pTab; /* Source table */
+ Expr *pCExpr; /* The original expression */
int iTable; /* Cursor number of the source table */
- int iColumn; /* Column number within the source table */
- int iSorterColumn; /* Column number in the sorting index */
int iMem; /* Memory location that acts as accumulator */
- Expr *pExpr; /* The original expression */
+ i16 iColumn; /* Column number within the source table */
+ i16 iSorterColumn; /* Column number in the sorting index */
} *aCol;
int nColumn; /* Number of used entries in aCol[] */
int nAccumulator; /* Number of columns that show through to the output.
** Additional columns are used only as parameters to
** aggregate functions */
struct AggInfo_func { /* For each aggregate function */
- Expr *pExpr; /* Expression encoding the function */
+ Expr *pFExpr; /* Expression encoding the function */
FuncDef *pFunc; /* The aggregate function implementation */
int iMem; /* Memory location that acts as accumulator */
int iDistinct; /* Ephemeral table used to enforce DISTINCT */
} *aFunc;
int nFunc; /* Number of entries in aFunc[] */
+ u32 selId; /* Select to which this AggInfo belongs */
+ AggInfo *pNext; /* Next in list of them all */
};
/*
@@ -17488,10 +17922,10 @@ struct AggInfo {
** it uses less memory in the Expr object, which is a big memory user
** in systems with lots of prepared statements. And few applications
** need more than about 10 or 20 variables. But some extreme users want
-** to have prepared statements with over 32767 variables, and for them
+** to have prepared statements with over 32766 variables, and for them
** the option is available (at compile-time).
*/
-#if SQLITE_MAX_VARIABLE_NUMBER<=32767
+#if SQLITE_MAX_VARIABLE_NUMBER<32767
typedef i16 ynVar;
#else
typedef int ynVar;
@@ -17567,6 +18001,9 @@ struct Expr {
** TK_COLUMN: the value of p5 for OP_Column
** TK_AGG_FUNCTION: nesting depth
** TK_FUNCTION: NC_SelfRef flag if needs OP_PureFunc */
+#ifdef SQLITE_DEBUG
+ u8 vvaFlags; /* Verification flags. */
+#endif
u32 flags; /* Various flags. EP_* See below */
union {
char *zToken; /* Token value. Zero terminated and dequoted */
@@ -17641,7 +18078,7 @@ struct Expr {
#define EP_TokenOnly 0x004000 /* Expr struct EXPR_TOKENONLYSIZE bytes only */
#define EP_Win 0x008000 /* Contains window functions */
#define EP_MemToken 0x010000 /* Need to sqlite3DbFree() Expr.zToken */
-#define EP_NoReduce 0x020000 /* Cannot EXPRDUP_REDUCE this Expr */
+ /* 0x020000 // available for reuse */
#define EP_Unlikely 0x040000 /* unlikely() or likelihood() function */
#define EP_ConstFunc 0x080000 /* A SQLITE_FUNC_CONSTANT or _SLOCHNG function */
#define EP_CanBeNull 0x100000 /* Can be null despite NOT NULL constraint */
@@ -17654,7 +18091,8 @@ struct Expr {
#define EP_Static 0x8000000 /* Held in memory not obtained from malloc() */
#define EP_IsTrue 0x10000000 /* Always has boolean value of TRUE */
#define EP_IsFalse 0x20000000 /* Always has boolean value of FALSE */
-#define EP_Indirect 0x40000000 /* Contained within a TRIGGER or a VIEW */
+#define EP_FromDDL 0x40000000 /* Originates from sqlite_schema */
+ /* 0x80000000 // Available */
/*
** The EP_Propagate mask is a set of properties that automatically propagate
@@ -17673,14 +18111,24 @@ struct Expr {
#define ExprAlwaysTrue(E) (((E)->flags&(EP_FromJoin|EP_IsTrue))==EP_IsTrue)
#define ExprAlwaysFalse(E) (((E)->flags&(EP_FromJoin|EP_IsFalse))==EP_IsFalse)
+
+/* Flags for use with Expr.vvaFlags
+*/
+#define EP_NoReduce 0x01 /* Cannot EXPRDUP_REDUCE this Expr */
+#define EP_Immutable 0x02 /* Do not change this Expr node */
+
/* The ExprSetVVAProperty() macro is used for Verification, Validation,
** and Accreditation only. It works like ExprSetProperty() during VVA
** processes but is a no-op for delivery.
*/
#ifdef SQLITE_DEBUG
-# define ExprSetVVAProperty(E,P) (E)->flags|=(P)
+# define ExprSetVVAProperty(E,P) (E)->vvaFlags|=(P)
+# define ExprHasVVAProperty(E,P) (((E)->vvaFlags&(P))!=0)
+# define ExprClearVVAProperties(E) (E)->vvaFlags = 0
#else
# define ExprSetVVAProperty(E,P)
+# define ExprHasVVAProperty(E,P) 0
+# define ExprClearVVAProperties(E)
#endif
/*
@@ -17718,23 +18166,28 @@ struct Expr {
** also be used as the argument to a function, in which case the a.zName
** field is not used.
**
-** By default the Expr.zSpan field holds a human-readable description of
-** the expression that is used in the generation of error messages and
-** column labels. In this case, Expr.zSpan is typically the text of a
-** column expression as it exists in a SELECT statement. However, if
-** the bSpanIsTab flag is set, then zSpan is overloaded to mean the name
-** of the result column in the form: DATABASE.TABLE.COLUMN. This later
-** form is used for name resolution with nested FROM clauses.
+** In order to try to keep memory usage down, the Expr.a.zEName field
+** is used for multiple purposes:
+**
+** eEName Usage
+** ---------- -------------------------
+** ENAME_NAME (1) the AS of result set column
+** (2) COLUMN= of an UPDATE
+**
+** ENAME_TAB DB.TABLE.NAME used to resolve names
+** of subqueries
+**
+** ENAME_SPAN Text of the original result set
+** expression.
*/
struct ExprList {
int nExpr; /* Number of expressions on the list */
struct ExprList_item { /* For each expression in the list */
Expr *pExpr; /* The parse tree for this expression */
- char *zName; /* Token associated with this expression */
- char *zSpan; /* Original text of the expression */
+ char *zEName; /* Token associated with this expression */
u8 sortFlags; /* Mask of KEYINFO_ORDER_* flags */
+ unsigned eEName :2; /* Meaning of zEName */
unsigned done :1; /* A flag to indicate when processing is finished */
- unsigned bSpanIsTab :1; /* zSpan holds DB.TABLE.COLUMN */
unsigned reusable :1; /* Constant expression is reusable */
unsigned bSorterRef :1; /* Defer evaluation until after sorting */
unsigned bNulls: 1; /* True if explicit "NULLS FIRST/LAST" */
@@ -17748,6 +18201,13 @@ struct ExprList {
} a[1]; /* One slot for each expression in the list */
};
+/*
+** Allowed values for Expr.a.eEName
+*/
+#define ENAME_NAME 0 /* The AS clause of a result set */
+#define ENAME_SPAN 1 /* Complete text of the result set expression */
+#define ENAME_TAB 2 /* "DB.TABLE.NAME" for the result set */
+
/*
** An instance of this structure can hold a simple list of identifiers,
** such as the list "a,b,c" in the following statements:
@@ -17811,6 +18271,7 @@ struct SrcList {
unsigned isCorrelated :1; /* True if sub-query is correlated */
unsigned viaCoroutine :1; /* Implemented as a co-routine */
unsigned isRecursive :1; /* True for recursive reference in WITH */
+ unsigned fromDDL :1; /* Comes from sqlite_schema */
} fg;
int iCursor; /* The VDBE cursor number used to access this table */
Expr *pOn; /* The ON clause of a join */
@@ -17931,6 +18392,7 @@ struct NameContext {
#define NC_HasWin 0x08000 /* One or more window functions seen */
#define NC_IsDDL 0x10000 /* Resolving names in a CREATE statement */
#define NC_InAggFunc 0x20000 /* True if analyzing arguments to an agg func */
+#define NC_FromDDL 0x40000 /* SQL text comes from sqlite_schema */
/*
** An instance of the following object describes a single ON CONFLICT
@@ -17941,7 +18403,7 @@ struct NameContext {
** conflict-target clause.) The pUpsertTargetWhere is the optional
** WHERE clause used to identify partial unique indexes.
**
-** pUpsertSet is the list of column=expr terms of the UPDATE statement.
+** pUpsertSet is the list of column=expr terms of the UPDATE statement.
** The pUpsertSet field is NULL for a ON CONFLICT DO NOTHING. The
** pUpsertWhere is the WHERE clause for the UPDATE and is NULL if the
** WHERE clause is omitted.
@@ -17980,13 +18442,13 @@ struct Upsert {
** sequences for the ORDER BY clause.
*/
struct Select {
- ExprList *pEList; /* The fields of the result */
u8 op; /* One of: TK_UNION TK_ALL TK_INTERSECT TK_EXCEPT */
LogEst nSelectRow; /* Estimated number of result rows */
u32 selFlags; /* Various SF_* values */
int iLimit, iOffset; /* Memory registers holding LIMIT & OFFSET counters */
u32 selId; /* Unique identifier number for this SELECT */
int addrOpenEphm[2]; /* OP_OpenEphem opcodes related to this select */
+ ExprList *pEList; /* The fields of the result */
SrcList *pSrc; /* The FROM clause */
Expr *pWhere; /* The WHERE clause */
ExprList *pGroupBy; /* The GROUP BY clause */
@@ -18032,6 +18494,9 @@ struct Select {
#define SF_ComplexResult 0x0040000 /* Result contains subquery or function */
#define SF_WhereBegin 0x0080000 /* Really a WhereBegin() call. Debug Only */
#define SF_WinRewrite 0x0100000 /* Window function rewrite accomplished */
+#define SF_View 0x0200000 /* SELECT statement is a view */
+#define SF_NoopOrderBy 0x0400000 /* ORDER BY is ignored for this query */
+#define SF_UpdateFrom 0x0800000 /* Statement is an UPDATE...FROM */
/*
** The results of a SELECT can be distributed in several ways, as defined
@@ -18096,6 +18561,14 @@ struct Select {
** SRT_DistQueue Store results in priority queue pDest->iSDParm only if
** the same record has never been stored before. The
** index at pDest->iSDParm+1 hold all prior stores.
+**
+** SRT_Upfrom Store results in the temporary table already opened by
+** pDest->iSDParm. If (pDest->iSDParm<0), then the temp
+** table is an intkey table - in this case the first
+** column returned by the SELECT is used as the integer
+** key. If (pDest->iSDParm>0), then the table is an index
+** table. (pDest->iSDParm) is the number of key columns in
+** each index record in this case.
*/
#define SRT_Union 1 /* Store result as keys in an index */
#define SRT_Except 2 /* Remove result from a UNION index */
@@ -18115,14 +18588,16 @@ struct Select {
#define SRT_EphemTab 12 /* Create transient tab and store like SRT_Table */
#define SRT_Coroutine 13 /* Generate a single row of result */
#define SRT_Table 14 /* Store result as data with an automatic rowid */
+#define SRT_Upfrom 15 /* Store result as data with rowid */
/*
** An instance of this object describes where to put of the results of
** a SELECT statement.
*/
struct SelectDest {
- u8 eDest; /* How to dispose of the results. On of SRT_* above. */
+ u8 eDest; /* How to dispose of the results. One of SRT_* above. */
int iSDParm; /* A parameter used by the eDest disposal method */
+ int iSDParm2; /* A second parameter for the eDest disposal method */
int iSdst; /* Base register where results are written */
int nSdst; /* Number of registers allocated */
char *zAffSdst; /* Affinity used when eDest==SRT_Set */
@@ -18248,6 +18723,7 @@ struct Parse {
Parse *pToplevel; /* Parse structure for main program (or NULL) */
Table *pTriggerTab; /* Table triggers are being coded for */
Parse *pParentParse; /* Parent parser if this parser is nested */
+ AggInfo *pAggList; /* List of all AggInfo objects */
int addrCrTab; /* Address of OP_CreateBtree opcode on CREATE TABLE */
u32 nQueryLoop; /* Est number of iterations of a query (10*log2(N)) */
u32 oldmask; /* Mask of old.* columns referenced */
@@ -18277,9 +18753,7 @@ struct Parse {
ynVar nVar; /* Number of '?' variables seen in the SQL so far */
u8 iPkSortOrder; /* ASC or DESC for INTEGER PRIMARY KEY */
u8 explain; /* True if the EXPLAIN flag is found on the query */
-#if !(defined(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_OMIT_ALTERTABLE))
u8 eParseMode; /* PARSE_MODE_XXX constant */
-#endif
#ifndef SQLITE_OMIT_VIRTUALTABLE
int nVtabLock; /* Number of virtual tables to lock */
#endif
@@ -18311,8 +18785,8 @@ struct Parse {
#define PARSE_MODE_NORMAL 0
#define PARSE_MODE_DECLARE_VTAB 1
-#define PARSE_MODE_RENAME_COLUMN 2
-#define PARSE_MODE_RENAME_TABLE 3
+#define PARSE_MODE_RENAME 2
+#define PARSE_MODE_UNMAP 3
/*
** Sizes and pointers of various parts of the Parse object.
@@ -18334,7 +18808,7 @@ struct Parse {
#if defined(SQLITE_OMIT_ALTERTABLE)
#define IN_RENAME_OBJECT 0
#else
- #define IN_RENAME_OBJECT (pParse->eParseMode>=PARSE_MODE_RENAME_COLUMN)
+ #define IN_RENAME_OBJECT (pParse->eParseMode>=PARSE_MODE_RENAME)
#endif
#if defined(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_OMIT_ALTERTABLE)
@@ -18467,6 +18941,7 @@ struct TriggerStep {
Trigger *pTrig; /* The trigger that this step is a part of */
Select *pSelect; /* SELECT statement or RHS of INSERT INTO SELECT ... */
char *zTarget; /* Target table for DELETE, UPDATE, INSERT */
+ SrcList *pFrom; /* FROM clause for UPDATE statement (if any) */
Expr *pWhere; /* The WHERE clause for DELETE or UPDATE steps */
ExprList *pExprList; /* SET clause for UPDATE */
IdList *pIdList; /* Column names for INSERT */
@@ -18485,7 +18960,7 @@ typedef struct DbFixer DbFixer;
struct DbFixer {
Parse *pParse; /* The parsing context. Error messages written here */
Schema *pSchema; /* Fix items to this schema */
- int bVarOnly; /* Check for variable references only */
+ u8 bTemp; /* True for TEMP schema entries */
const char *zDb; /* Make sure all objects are contained in this database */
const char *zType; /* Type of the container - used for error messages */
const Token *pName; /* Name of the container - used for error messages */
@@ -18522,6 +18997,7 @@ typedef struct {
int rc; /* Result code stored here */
u32 mInitFlags; /* Flags controlling error messages */
u32 nInitRow; /* Number of rows processed */
+ Pgno mxPage; /* Maximum page number. 0 for no limit. */
} InitData;
/*
@@ -18590,7 +19066,6 @@ struct Sqlite3Config {
int (*xTestCallback)(int); /* Invoked by sqlite3FaultSim() */
#endif
int bLocaltimeFault; /* True to fail localtime() calls */
- int bInternalFunctions; /* Internal SQL functions are visible */
int iOnceResetThreshold; /* When to reset OP_Once counters */
u32 szSorterRef; /* Min size in bytes to use sorter-refs */
unsigned int iPrngSeed; /* Alternative fixed seed for the PRNG */
@@ -18640,6 +19115,7 @@ struct Walker {
struct WhereConst *pConst; /* WHERE clause constants */
struct RenameCtx *pRename; /* RENAME COLUMN context */
struct Table *pTab; /* Table of generated column */
+ struct SrcList_item *pSrcItem; /* A single FROM clause item */
} u;
};
@@ -18652,6 +19128,9 @@ SQLITE_PRIVATE int sqlite3WalkSelectFrom(Walker*, Select*);
SQLITE_PRIVATE int sqlite3ExprWalkNoop(Walker*, Expr*);
SQLITE_PRIVATE int sqlite3SelectWalkNoop(Walker*, Select*);
SQLITE_PRIVATE int sqlite3SelectWalkFail(Walker*, Select*);
+SQLITE_PRIVATE int sqlite3WalkerDepthIncrease(Walker*,Select*);
+SQLITE_PRIVATE void sqlite3WalkerDepthDecrease(Walker*,Select*);
+
#ifdef SQLITE_DEBUG
SQLITE_PRIVATE void sqlite3SelectWalkAssert2(Walker*, Select*);
#endif
@@ -18753,7 +19232,7 @@ SQLITE_PRIVATE Window *sqlite3WindowAlloc(Parse*, int, int, Expr*, int , Expr*,
SQLITE_PRIVATE void sqlite3WindowAttach(Parse*, Expr*, Window*);
SQLITE_PRIVATE void sqlite3WindowLink(Select *pSel, Window *pWin);
SQLITE_PRIVATE int sqlite3WindowCompare(Parse*, Window*, Window*, int);
-SQLITE_PRIVATE void sqlite3WindowCodeInit(Parse*, Window*);
+SQLITE_PRIVATE void sqlite3WindowCodeInit(Parse*, Select*);
SQLITE_PRIVATE void sqlite3WindowCodeStep(Parse*, Select*, WhereInfo*, int, int);
SQLITE_PRIVATE int sqlite3WindowRewrite(Parse*, Select*);
SQLITE_PRIVATE int sqlite3ExpandSubquery(Parse*, struct SrcList_item*);
@@ -18796,13 +19275,16 @@ SQLITE_PRIVATE int sqlite3CantopenError(int);
#ifdef SQLITE_DEBUG
SQLITE_PRIVATE int sqlite3NomemError(int);
SQLITE_PRIVATE int sqlite3IoerrnomemError(int);
-SQLITE_PRIVATE int sqlite3CorruptPgnoError(int,Pgno);
# define SQLITE_NOMEM_BKPT sqlite3NomemError(__LINE__)
# define SQLITE_IOERR_NOMEM_BKPT sqlite3IoerrnomemError(__LINE__)
-# define SQLITE_CORRUPT_PGNO(P) sqlite3CorruptPgnoError(__LINE__,(P))
#else
# define SQLITE_NOMEM_BKPT SQLITE_NOMEM
# define SQLITE_IOERR_NOMEM_BKPT SQLITE_IOERR_NOMEM
+#endif
+#if defined(SQLITE_DEBUG) || defined(SQLITE_ENABLE_CORRUPT_PGNO)
+SQLITE_PRIVATE int sqlite3CorruptPgnoError(int,Pgno);
+# define SQLITE_CORRUPT_PGNO(P) sqlite3CorruptPgnoError(__LINE__,(P))
+#else
# define SQLITE_CORRUPT_PGNO(P) sqlite3CorruptError(__LINE__)
#endif
@@ -19019,6 +19501,7 @@ SQLITE_PRIVATE void sqlite3PExprAddSelect(Parse*, Expr*, Select*);
SQLITE_PRIVATE Expr *sqlite3ExprAnd(Parse*,Expr*, Expr*);
SQLITE_PRIVATE Expr *sqlite3ExprSimplifiedAndOr(Expr*);
SQLITE_PRIVATE Expr *sqlite3ExprFunction(Parse*,ExprList*, Token*, int);
+SQLITE_PRIVATE void sqlite3ExprFunctionUsable(Parse*,Expr*,FuncDef*);
SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse*, Expr*, u32);
SQLITE_PRIVATE void sqlite3ExprDelete(sqlite3*, Expr*);
SQLITE_PRIVATE void sqlite3ExprUnmapAndDelete(Parse*, Expr*);
@@ -19045,7 +19528,7 @@ SQLITE_PRIVATE void sqlite3DeleteColumnNames(sqlite3*,Table*);
SQLITE_PRIVATE int sqlite3ColumnsFromExprList(Parse*,ExprList*,i16*,Column**);
SQLITE_PRIVATE void sqlite3SelectAddColumnTypeAndCollation(Parse*,Table*,Select*,char);
SQLITE_PRIVATE Table *sqlite3ResultSetOfSelect(Parse*,Select*,char);
-SQLITE_PRIVATE void sqlite3OpenMasterTable(Parse *, int);
+SQLITE_PRIVATE void sqlite3OpenSchemaTable(Parse *, int);
SQLITE_PRIVATE Index *sqlite3PrimaryKeyIndex(Table*);
SQLITE_PRIVATE i16 sqlite3TableColumnToIndex(Index*, i16);
#ifdef SQLITE_OMIT_GENERATED_COLUMNS
@@ -19069,16 +19552,9 @@ SQLITE_PRIVATE void sqlite3AddDefaultValue(Parse*,Expr*,const char*,const char*)
SQLITE_PRIVATE void sqlite3AddCollateType(Parse*, Token*);
SQLITE_PRIVATE void sqlite3AddGenerated(Parse*,Expr*,Token*);
SQLITE_PRIVATE void sqlite3EndTable(Parse*,Token*,Token*,u8,Select*);
-#ifdef SQLITE_DEBUG
-SQLITE_PRIVATE int sqlite3UriCount(const char*);
-#endif
SQLITE_PRIVATE int sqlite3ParseUri(const char*,const char*,unsigned int*,
sqlite3_vfs**,char**,char **);
-#ifdef SQLITE_HAS_CODEC
-SQLITE_PRIVATE int sqlite3CodecQueryParameters(sqlite3*,const char*,const char*);
-#else
-# define sqlite3CodecQueryParameters(A,B,C) 0
-#endif
+#define sqlite3CodecQueryParameters(A,B,C) 0
SQLITE_PRIVATE Btree *sqlite3DbNameToBtree(sqlite3*,const char*);
#ifdef SQLITE_UNTESTABLE
@@ -19135,6 +19611,7 @@ SQLITE_PRIVATE void *sqlite3ArrayAllocate(sqlite3*,void*,int,int*,int*);
SQLITE_PRIVATE IdList *sqlite3IdListAppend(Parse*, IdList*, Token*);
SQLITE_PRIVATE int sqlite3IdListIndex(IdList*,const char*);
SQLITE_PRIVATE SrcList *sqlite3SrcListEnlarge(Parse*, SrcList*, int, int);
+SQLITE_PRIVATE SrcList *sqlite3SrcListAppendList(Parse *pParse, SrcList *p1, SrcList *p2);
SQLITE_PRIVATE SrcList *sqlite3SrcListAppend(Parse*, SrcList*, Token*, Token*);
SQLITE_PRIVATE SrcList *sqlite3SrcListAppendFromTerm(Parse*, SrcList*, Token*, Token*,
Token*, Select*, Expr*, IdList*);
@@ -19175,6 +19652,7 @@ SQLITE_PRIVATE int sqlite3WhereOkOnePass(WhereInfo*, int*);
#define ONEPASS_OFF 0 /* Use of ONEPASS not allowed */
#define ONEPASS_SINGLE 1 /* ONEPASS valid for a single row update */
#define ONEPASS_MULTI 2 /* ONEPASS is valid for multiple rows */
+SQLITE_PRIVATE int sqlite3WhereUsesDeferredSeek(WhereInfo*);
SQLITE_PRIVATE void sqlite3ExprCodeLoadIndexColumn(Parse*, Index*, int, int, int);
SQLITE_PRIVATE int sqlite3ExprCodeGetColumn(Parse*, Table*, int, int, int, u8);
SQLITE_PRIVATE void sqlite3ExprCodeGetColumnOfTable(Vdbe*, Table*, int, int, int);
@@ -19185,7 +19663,7 @@ SQLITE_PRIVATE void sqlite3ExprCodeGeneratedColumn(Parse*, Column*, int);
#endif
SQLITE_PRIVATE void sqlite3ExprCodeCopy(Parse*, Expr*, int);
SQLITE_PRIVATE void sqlite3ExprCodeFactorable(Parse*, Expr*, int);
-SQLITE_PRIVATE int sqlite3ExprCodeAtInit(Parse*, Expr*, int);
+SQLITE_PRIVATE int sqlite3ExprCodeRunJustOnce(Parse*, Expr*, int);
SQLITE_PRIVATE int sqlite3ExprCodeTemp(Parse*, Expr*, int*);
SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse*, Expr*, int);
SQLITE_PRIVATE int sqlite3ExprCodeExprList(Parse*, ExprList*, int, int, u8);
@@ -19212,6 +19690,7 @@ SQLITE_PRIVATE int sqlite3ExprCompareSkip(Expr*, Expr*, int);
SQLITE_PRIVATE int sqlite3ExprListCompare(ExprList*, ExprList*, int);
SQLITE_PRIVATE int sqlite3ExprImpliesExpr(Parse*,Expr*, Expr*, int);
SQLITE_PRIVATE int sqlite3ExprImpliesNonNullRow(Expr*,int);
+SQLITE_PRIVATE void sqlite3AggInfoPersistWalkerInit(Walker*,Parse*);
SQLITE_PRIVATE void sqlite3ExprAnalyzeAggregates(NameContext*, Expr*);
SQLITE_PRIVATE void sqlite3ExprAnalyzeAggList(NameContext*,ExprList*);
SQLITE_PRIVATE int sqlite3ExprCoveredByIndex(Expr*, int iCur, Index *pIdx);
@@ -19229,6 +19708,7 @@ SQLITE_PRIVATE void sqlite3EndTransaction(Parse*,int);
SQLITE_PRIVATE void sqlite3Savepoint(Parse*, int, Token*);
SQLITE_PRIVATE void sqlite3CloseSavepoints(sqlite3 *);
SQLITE_PRIVATE void sqlite3LeaveMutexAndCloseZombie(sqlite3*);
+SQLITE_PRIVATE u32 sqlite3IsTrueOrFalse(const char*);
SQLITE_PRIVATE int sqlite3ExprIdToTrueFalse(Expr*);
SQLITE_PRIVATE int sqlite3ExprTruthValue(const Expr*);
SQLITE_PRIVATE int sqlite3ExprIsConstant(Expr*);
@@ -19301,13 +19781,14 @@ SQLITE_PRIVATE TriggerStep *sqlite3TriggerSelectStep(sqlite3*,Select*,
SQLITE_PRIVATE TriggerStep *sqlite3TriggerInsertStep(Parse*,Token*, IdList*,
Select*,u8,Upsert*,
const char*,const char*);
-SQLITE_PRIVATE TriggerStep *sqlite3TriggerUpdateStep(Parse*,Token*,ExprList*, Expr*, u8,
- const char*,const char*);
+SQLITE_PRIVATE TriggerStep *sqlite3TriggerUpdateStep(Parse*,Token*,SrcList*,ExprList*,
+ Expr*, u8, const char*,const char*);
SQLITE_PRIVATE TriggerStep *sqlite3TriggerDeleteStep(Parse*,Token*, Expr*,
const char*,const char*);
SQLITE_PRIVATE void sqlite3DeleteTrigger(sqlite3*, Trigger*);
SQLITE_PRIVATE void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*);
SQLITE_PRIVATE u32 sqlite3TriggerColmask(Parse*,Trigger*,ExprList*,int,int,Table*,int);
+SQLITE_PRIVATE SrcList *sqlite3TriggerStepSrc(Parse*, TriggerStep*);
# define sqlite3ParseToplevel(p) ((p)->pToplevel ? (p)->pToplevel : (p))
# define sqlite3IsToplevel(p) ((p)->pToplevel==0)
#else
@@ -19321,6 +19802,7 @@ SQLITE_PRIVATE u32 sqlite3TriggerColmask(Parse*,Trigger*,ExprList*,int,int,Tab
# define sqlite3ParseToplevel(p) p
# define sqlite3IsToplevel(p) 1
# define sqlite3TriggerColmask(A,B,C,D,E,F,G) 0
+# define sqlite3TriggerStepSrc(A,B) 0
#endif
SQLITE_PRIVATE int sqlite3JoinType(Parse*, Token*, Token*, Token*);
@@ -19339,6 +19821,7 @@ SQLITE_PRIVATE int sqlite3AuthReadCol(Parse*, const char *, const char *, int)
# define sqlite3AuthContextPush(a,b,c)
# define sqlite3AuthContextPop(a) ((void)(a))
#endif
+SQLITE_PRIVATE int sqlite3DbIsNamed(sqlite3 *db, int iDb, const char *zName);
SQLITE_PRIVATE void sqlite3Attach(Parse*, Expr*, Expr*, Expr*);
SQLITE_PRIVATE void sqlite3Detach(Parse*, Expr*);
SQLITE_PRIVATE void sqlite3FixInit(DbFixer*, Parse*, int, const char*, const Token*);
@@ -19348,8 +19831,10 @@ SQLITE_PRIVATE int sqlite3FixExpr(DbFixer*, Expr*);
SQLITE_PRIVATE int sqlite3FixExprList(DbFixer*, ExprList*);
SQLITE_PRIVATE int sqlite3FixTriggerStep(DbFixer*, TriggerStep*);
SQLITE_PRIVATE int sqlite3RealSameAsInt(double,sqlite3_int64);
+SQLITE_PRIVATE void sqlite3Int64ToText(i64,char*);
SQLITE_PRIVATE int sqlite3AtoF(const char *z, double*, int, u8);
SQLITE_PRIVATE int sqlite3GetInt32(const char *, int*);
+SQLITE_PRIVATE int sqlite3GetUInt32(const char*, u32*);
SQLITE_PRIVATE int sqlite3Atoi(const char*);
#ifndef SQLITE_OMIT_UTF16
SQLITE_PRIVATE int sqlite3Utf16ByteLen(const void *pData, int nChar);
@@ -19387,6 +19872,8 @@ SQLITE_PRIVATE int sqlite3VarintLen(u64 v);
*/
#define getVarint32(A,B) \
(u8)((*(A)<(u8)0x80)?((B)=(u32)*(A)),1:sqlite3GetVarint32((A),(u32 *)&(B)))
+#define getVarint32NR(A,B) \
+ B=(u32)*(A);if(B>=0x80)sqlite3GetVarint32((A),(u32*)&(B))
#define putVarint32(A,B) \
(u8)(((u32)(B)<(u32)0x80)?(*(A)=(unsigned char)(B)),1:\
sqlite3PutVarint((A),(B)))
@@ -19396,10 +19883,10 @@ SQLITE_PRIVATE int sqlite3VarintLen(u64 v);
SQLITE_PRIVATE const char *sqlite3IndexAffinityStr(sqlite3*, Index*);
SQLITE_PRIVATE void sqlite3TableAffinity(Vdbe*, Table*, int);
-SQLITE_PRIVATE char sqlite3CompareAffinity(Expr *pExpr, char aff2);
-SQLITE_PRIVATE int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity);
+SQLITE_PRIVATE char sqlite3CompareAffinity(const Expr *pExpr, char aff2);
+SQLITE_PRIVATE int sqlite3IndexAffinityOk(const Expr *pExpr, char idx_affinity);
SQLITE_PRIVATE char sqlite3TableColumnAffinity(Table*,int);
-SQLITE_PRIVATE char sqlite3ExprAffinity(Expr *pExpr);
+SQLITE_PRIVATE char sqlite3ExprAffinity(const Expr *pExpr);
SQLITE_PRIVATE int sqlite3Atoi64(const char*, i64*, int, u8);
SQLITE_PRIVATE int sqlite3DecOrHexToI64(const char*, i64*);
SQLITE_PRIVATE void sqlite3ErrorWithMsg(sqlite3*, int, const char*,...);
@@ -19422,9 +19909,10 @@ SQLITE_PRIVATE int sqlite3ReadSchema(Parse *pParse);
SQLITE_PRIVATE CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char*,int);
SQLITE_PRIVATE int sqlite3IsBinary(const CollSeq*);
SQLITE_PRIVATE CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char*zName);
-SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr);
-SQLITE_PRIVATE CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr);
-SQLITE_PRIVATE int sqlite3ExprCollSeqMatch(Parse*,Expr*,Expr*);
+SQLITE_PRIVATE void sqlite3SetTextEncoding(sqlite3 *db, u8);
+SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, const Expr *pExpr);
+SQLITE_PRIVATE CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, const Expr *pExpr);
+SQLITE_PRIVATE int sqlite3ExprCollSeqMatch(Parse*,const Expr*,const Expr*);
SQLITE_PRIVATE Expr *sqlite3ExprAddCollateToken(Parse *pParse, Expr*, const Token*, int);
SQLITE_PRIVATE Expr *sqlite3ExprAddCollateString(Parse*,Expr*,const char*);
SQLITE_PRIVATE Expr *sqlite3ExprSkipCollate(Expr*);
@@ -19466,14 +19954,15 @@ SQLITE_PRIVATE const unsigned char sqlite3UpperToLower[];
SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[];
SQLITE_PRIVATE SQLITE_WSD struct Sqlite3Config sqlite3Config;
SQLITE_PRIVATE FuncDefHash sqlite3BuiltinFunctions;
+SQLITE_API extern u32 sqlite3_unsupported_selecttrace;
#ifndef SQLITE_OMIT_WSD
SQLITE_PRIVATE int sqlite3PendingByte;
#endif
-#endif
+#endif /* SQLITE_AMALGAMATION */
#ifdef VDBE_PROFILE
SQLITE_PRIVATE sqlite3_uint64 sqlite3NProfileCnt;
#endif
-SQLITE_PRIVATE void sqlite3RootPageMoved(sqlite3*, int, int, int);
+SQLITE_PRIVATE void sqlite3RootPageMoved(sqlite3*, int, Pgno, Pgno);
SQLITE_PRIVATE void sqlite3Reindex(Parse*, Token*, Token*);
SQLITE_PRIVATE void sqlite3AlterFunctions(void);
SQLITE_PRIVATE void sqlite3AlterRenameTable(Parse*, SrcList*, Token*);
@@ -19485,7 +19974,14 @@ SQLITE_PRIVATE void sqlite3CodeRhsOfIN(Parse*, Expr*, int);
SQLITE_PRIVATE int sqlite3CodeSubselect(Parse*, Expr*);
SQLITE_PRIVATE void sqlite3SelectPrep(Parse*, Select*, NameContext*);
SQLITE_PRIVATE void sqlite3SelectWrongNumTermsError(Parse *pParse, Select *p);
-SQLITE_PRIVATE int sqlite3MatchSpanName(const char*, const char*, const char*, const char*);
+SQLITE_PRIVATE int sqlite3MatchEName(
+ const struct ExprList_item*,
+ const char*,
+ const char*,
+ const char*
+);
+SQLITE_PRIVATE Bitmask sqlite3ExprColUsed(Expr*);
+SQLITE_PRIVATE u8 sqlite3StrIHash(const char*);
SQLITE_PRIVATE int sqlite3ResolveExprNames(NameContext*, Expr*);
SQLITE_PRIVATE int sqlite3ResolveExprListNames(NameContext*, ExprList*);
SQLITE_PRIVATE void sqlite3ResolveSelectNames(Parse*, Select*, NameContext*);
@@ -19501,7 +19997,7 @@ SQLITE_PRIVATE void sqlite3RenameExprlistUnmap(Parse*, ExprList*);
SQLITE_PRIVATE CollSeq *sqlite3GetCollSeq(Parse*, u8, CollSeq *, const char*);
SQLITE_PRIVATE char sqlite3AffinityType(const char*, Column*);
SQLITE_PRIVATE void sqlite3Analyze(Parse*, Token*, Token*);
-SQLITE_PRIVATE int sqlite3InvokeBusyHandler(BusyHandler*, sqlite3_file*);
+SQLITE_PRIVATE int sqlite3InvokeBusyHandler(BusyHandler*);
SQLITE_PRIVATE int sqlite3FindDb(sqlite3*, Token*);
SQLITE_PRIVATE int sqlite3FindDbName(sqlite3 *, const char *);
SQLITE_PRIVATE int sqlite3AnalysisLoad(sqlite3*,int iDB);
@@ -19524,10 +20020,10 @@ SQLITE_PRIVATE int sqlite3KeyInfoIsWriteable(KeyInfo*);
#endif
SQLITE_PRIVATE int sqlite3CreateFunc(sqlite3 *, const char *, int, int, void *,
void (*)(sqlite3_context*,int,sqlite3_value **),
- void (*)(sqlite3_context*,int,sqlite3_value **),
+ void (*)(sqlite3_context*,int,sqlite3_value **),
void (*)(sqlite3_context*),
void (*)(sqlite3_context*),
- void (*)(sqlite3_context*,int,sqlite3_value **),
+ void (*)(sqlite3_context*,int,sqlite3_value **),
FuncDestructor *pDestructor
);
SQLITE_PRIVATE void sqlite3NoopDestructor(void*);
@@ -19580,7 +20076,7 @@ SQLITE_PRIVATE void sqlite3CloseExtensions(sqlite3*);
#endif
#ifndef SQLITE_OMIT_SHARED_CACHE
-SQLITE_PRIVATE void sqlite3TableLock(Parse *, int, int, u8, const char *);
+SQLITE_PRIVATE void sqlite3TableLock(Parse *, int, Pgno, u8, const char *);
#else
#define sqlite3TableLock(v,w,x,y,z)
#endif
@@ -19626,8 +20122,10 @@ SQLITE_PRIVATE Module *sqlite3VtabCreateModule(
SQLITE_PRIVATE int sqlite3ReadOnlyShadowTables(sqlite3 *db);
#ifndef SQLITE_OMIT_VIRTUALTABLE
SQLITE_PRIVATE int sqlite3ShadowTableName(sqlite3 *db, const char *zName);
+SQLITE_PRIVATE int sqlite3IsShadowTableOf(sqlite3*,Table*,const char*);
#else
# define sqlite3ShadowTableName(A,B) 0
+# define sqlite3IsShadowTableOf(A,B,C) 0
#endif
SQLITE_PRIVATE int sqlite3VtabEponymousTableInit(Parse*,Module*);
SQLITE_PRIVATE void sqlite3VtabEponymousTableClear(sqlite3*,Module*);
@@ -19650,8 +20148,8 @@ SQLITE_PRIVATE char *sqlite3Normalize(Vdbe*, const char*);
#endif
SQLITE_PRIVATE int sqlite3Reprepare(Vdbe*);
SQLITE_PRIVATE void sqlite3ExprListCheckLength(Parse*, ExprList*, const char*);
-SQLITE_PRIVATE CollSeq *sqlite3ExprCompareCollSeq(Parse*,Expr*);
-SQLITE_PRIVATE CollSeq *sqlite3BinaryCompareCollSeq(Parse *, Expr *, Expr *);
+SQLITE_PRIVATE CollSeq *sqlite3ExprCompareCollSeq(Parse*,const Expr*);
+SQLITE_PRIVATE CollSeq *sqlite3BinaryCompareCollSeq(Parse *, const Expr*, const Expr*);
SQLITE_PRIVATE int sqlite3TempInMemory(const sqlite3*);
SQLITE_PRIVATE const char *sqlite3JournalModename(int);
#ifndef SQLITE_OMIT_WAL
@@ -19867,5099 +20365,6 @@ SQLITE_PRIVATE const char **sqlite3CompileOptions(int *pnOpt);
#endif /* SQLITEINT_H */
/************** End of sqliteInt.h *******************************************/
-/************** Begin file crypto.c ******************************************/
-/*
-** SQLCipher
-** http://sqlcipher.net
-**
-** Copyright (c) 2008 - 2013, ZETETIC LLC
-** All rights reserved.
-**
-** Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are met:
-** * Redistributions of source code must retain the above copyright
-** notice, this list of conditions and the following disclaimer.
-** * Redistributions in binary form must reproduce the above copyright
-** notice, this list of conditions and the following disclaimer in the
-** documentation and/or other materials provided with the distribution.
-** * Neither the name of the ZETETIC LLC nor the
-** names of its contributors may be used to endorse or promote products
-** derived from this software without specific prior written permission.
-**
-** THIS SOFTWARE IS PROVIDED BY ZETETIC LLC ''AS IS'' AND ANY
-** EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-** DISCLAIMED. IN NO EVENT SHALL ZETETIC LLC BE LIABLE FOR ANY
-** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-**
-*/
-/* BEGIN SQLCIPHER */
-#ifdef SQLITE_HAS_CODEC
-
-/* #include */
-/************** Include sqlcipher.h in the middle of crypto.c ****************/
-/************** Begin file sqlcipher.h ***************************************/
-/*
-** SQLCipher
-** sqlcipher.h developed by Stephen Lombardo (Zetetic LLC)
-** sjlombardo at zetetic dot net
-** http://zetetic.net
-**
-** Copyright (c) 2008, ZETETIC LLC
-** All rights reserved.
-**
-** Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are met:
-** * Redistributions of source code must retain the above copyright
-** notice, this list of conditions and the following disclaimer.
-** * Redistributions in binary form must reproduce the above copyright
-** notice, this list of conditions and the following disclaimer in the
-** documentation and/or other materials provided with the distribution.
-** * Neither the name of the ZETETIC LLC nor the
-** names of its contributors may be used to endorse or promote products
-** derived from this software without specific prior written permission.
-**
-** THIS SOFTWARE IS PROVIDED BY ZETETIC LLC ''AS IS'' AND ANY
-** EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-** DISCLAIMED. IN NO EVENT SHALL ZETETIC LLC BE LIABLE FOR ANY
-** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-**
-*/
-/* BEGIN SQLCIPHER */
-#ifdef SQLITE_HAS_CODEC
-#ifndef SQLCIPHER_H
-#define SQLCIPHER_H
-
-#define SQLCIPHER_HMAC_SHA1 0
-#define SQLCIPHER_HMAC_SHA1_LABEL "HMAC_SHA1"
-#define SQLCIPHER_HMAC_SHA256 1
-#define SQLCIPHER_HMAC_SHA256_LABEL "HMAC_SHA256"
-#define SQLCIPHER_HMAC_SHA512 2
-#define SQLCIPHER_HMAC_SHA512_LABEL "HMAC_SHA512"
-
-
-#define SQLCIPHER_PBKDF2_HMAC_SHA1 0
-#define SQLCIPHER_PBKDF2_HMAC_SHA1_LABEL "PBKDF2_HMAC_SHA1"
-#define SQLCIPHER_PBKDF2_HMAC_SHA256 1
-#define SQLCIPHER_PBKDF2_HMAC_SHA256_LABEL "PBKDF2_HMAC_SHA256"
-#define SQLCIPHER_PBKDF2_HMAC_SHA512 2
-#define SQLCIPHER_PBKDF2_HMAC_SHA512_LABEL "PBKDF2_HMAC_SHA512"
-
-
-typedef struct {
- int (*activate)(void *ctx);
- int (*deactivate)(void *ctx);
- const char* (*get_provider_name)(void *ctx);
- int (*add_random)(void *ctx, void *buffer, int length);
- int (*random)(void *ctx, void *buffer, int length);
- int (*hmac)(void *ctx, int algorithm, unsigned char *hmac_key, int key_sz, unsigned char *in, int in_sz, unsigned char *in2, int in2_sz, unsigned char *out);
- int (*kdf)(void *ctx, int algorithm, const unsigned char *pass, int pass_sz, unsigned char* salt, int salt_sz, int workfactor, int key_sz, unsigned char *key);
- int (*cipher)(void *ctx, int mode, unsigned char *key, int key_sz, unsigned char *iv, unsigned char *in, int in_sz, unsigned char *out);
- const char* (*get_cipher)(void *ctx);
- int (*get_key_sz)(void *ctx);
- int (*get_iv_sz)(void *ctx);
- int (*get_block_sz)(void *ctx);
- int (*get_hmac_sz)(void *ctx, int algorithm);
- int (*ctx_init)(void **ctx);
- int (*ctx_free)(void **ctx);
- int (*fips_status)(void *ctx);
- const char* (*get_provider_version)(void *ctx);
-} sqlcipher_provider;
-
-/* utility functions */
-void* sqlcipher_malloc(u64);
-void sqlcipher_mlock(void *, u64);
-void sqlcipher_munlock(void *, u64);
-void* sqlcipher_memset(void *, unsigned char, u64);
-int sqlcipher_ismemset(const void *, unsigned char, u64);
-int sqlcipher_memcmp(const void *, const void *, int);
-void sqlcipher_free(void *, u64);
-char* sqlcipher_version();
-
-/* provider interfaces */
-int sqlcipher_register_provider(sqlcipher_provider *);
-sqlcipher_provider* sqlcipher_get_provider(void);
-
-#define SQLCIPHER_MUTEX_PROVIDER 0
-#define SQLCIPHER_MUTEX_PROVIDER_ACTIVATE 1
-#define SQLCIPHER_MUTEX_PROVIDER_RAND 2
-#define SQLCIPHER_MUTEX_RESERVED1 3
-#define SQLCIPHER_MUTEX_RESERVED2 4
-#define SQLCIPHER_MUTEX_RESERVED3 5
-#define SQLCIPHER_MUTEX_COUNT 6
-
-sqlite3_mutex* sqlcipher_mutex(int);
-
-#endif
-#endif
-/* END SQLCIPHER */
-
-
-/************** End of sqlcipher.h *******************************************/
-/************** Continuing where we left off in crypto.c *********************/
-/************** Include crypto.h in the middle of crypto.c *******************/
-/************** Begin file crypto.h ******************************************/
-/*
-** SQLCipher
-** crypto.h developed by Stephen Lombardo (Zetetic LLC)
-** sjlombardo at zetetic dot net
-** http://zetetic.net
-**
-** Copyright (c) 2008, ZETETIC LLC
-** All rights reserved.
-**
-** Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are met:
-** * Redistributions of source code must retain the above copyright
-** notice, this list of conditions and the following disclaimer.
-** * Redistributions in binary form must reproduce the above copyright
-** notice, this list of conditions and the following disclaimer in the
-** documentation and/or other materials provided with the distribution.
-** * Neither the name of the ZETETIC LLC nor the
-** names of its contributors may be used to endorse or promote products
-** derived from this software without specific prior written permission.
-**
-** THIS SOFTWARE IS PROVIDED BY ZETETIC LLC ''AS IS'' AND ANY
-** EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-** DISCLAIMED. IN NO EVENT SHALL ZETETIC LLC BE LIABLE FOR ANY
-** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-**
-*/
-/* BEGIN SQLCIPHER */
-#ifdef SQLITE_HAS_CODEC
-#ifndef CRYPTO_H
-#define CRYPTO_H
-
-/* #include "sqliteInt.h" */
-/************** Include btreeInt.h in the middle of crypto.h *****************/
-/************** Begin file btreeInt.h ****************************************/
-/*
-** 2004 April 6
-**
-** The author disclaims copyright to this source code. In place of
-** a legal notice, here is a blessing:
-**
-** May you do good and not evil.
-** May you find forgiveness for yourself and forgive others.
-** May you share freely, never taking more than you give.
-**
-*************************************************************************
-** This file implements an external (disk-based) database using BTrees.
-** For a detailed discussion of BTrees, refer to
-**
-** Donald E. Knuth, THE ART OF COMPUTER PROGRAMMING, Volume 3:
-** "Sorting And Searching", pages 473-480. Addison-Wesley
-** Publishing Company, Reading, Massachusetts.
-**
-** The basic idea is that each page of the file contains N database
-** entries and N+1 pointers to subpages.
-**
-** ----------------------------------------------------------------
-** | Ptr(0) | Key(0) | Ptr(1) | Key(1) | ... | Key(N-1) | Ptr(N) |
-** ----------------------------------------------------------------
-**
-** All of the keys on the page that Ptr(0) points to have values less
-** than Key(0). All of the keys on page Ptr(1) and its subpages have
-** values greater than Key(0) and less than Key(1). All of the keys
-** on Ptr(N) and its subpages have values greater than Key(N-1). And
-** so forth.
-**
-** Finding a particular key requires reading O(log(M)) pages from the
-** disk where M is the number of entries in the tree.
-**
-** In this implementation, a single file can hold one or more separate
-** BTrees. Each BTree is identified by the index of its root page. The
-** key and data for any entry are combined to form the "payload". A
-** fixed amount of payload can be carried directly on the database
-** page. If the payload is larger than the preset amount then surplus
-** bytes are stored on overflow pages. The payload for an entry
-** and the preceding pointer are combined to form a "Cell". Each
-** page has a small header which contains the Ptr(N) pointer and other
-** information such as the size of key and data.
-**
-** FORMAT DETAILS
-**
-** The file is divided into pages. The first page is called page 1,
-** the second is page 2, and so forth. A page number of zero indicates
-** "no such page". The page size can be any power of 2 between 512 and 65536.
-** Each page can be either a btree page, a freelist page, an overflow
-** page, or a pointer-map page.
-**
-** The first page is always a btree page. The first 100 bytes of the first
-** page contain a special header (the "file header") that describes the file.
-** The format of the file header is as follows:
-**
-** OFFSET SIZE DESCRIPTION
-** 0 16 Header string: "SQLite format 3\000"
-** 16 2 Page size in bytes. (1 means 65536)
-** 18 1 File format write version
-** 19 1 File format read version
-** 20 1 Bytes of unused space at the end of each page
-** 21 1 Max embedded payload fraction (must be 64)
-** 22 1 Min embedded payload fraction (must be 32)
-** 23 1 Min leaf payload fraction (must be 32)
-** 24 4 File change counter
-** 28 4 Reserved for future use
-** 32 4 First freelist page
-** 36 4 Number of freelist pages in the file
-** 40 60 15 4-byte meta values passed to higher layers
-**
-** 40 4 Schema cookie
-** 44 4 File format of schema layer
-** 48 4 Size of page cache
-** 52 4 Largest root-page (auto/incr_vacuum)
-** 56 4 1=UTF-8 2=UTF16le 3=UTF16be
-** 60 4 User version
-** 64 4 Incremental vacuum mode
-** 68 4 Application-ID
-** 72 20 unused
-** 92 4 The version-valid-for number
-** 96 4 SQLITE_VERSION_NUMBER
-**
-** All of the integer values are big-endian (most significant byte first).
-**
-** The file change counter is incremented when the database is changed
-** This counter allows other processes to know when the file has changed
-** and thus when they need to flush their cache.
-**
-** The max embedded payload fraction is the amount of the total usable
-** space in a page that can be consumed by a single cell for standard
-** B-tree (non-LEAFDATA) tables. A value of 255 means 100%. The default
-** is to limit the maximum cell size so that at least 4 cells will fit
-** on one page. Thus the default max embedded payload fraction is 64.
-**
-** If the payload for a cell is larger than the max payload, then extra
-** payload is spilled to overflow pages. Once an overflow page is allocated,
-** as many bytes as possible are moved into the overflow pages without letting
-** the cell size drop below the min embedded payload fraction.
-**
-** The min leaf payload fraction is like the min embedded payload fraction
-** except that it applies to leaf nodes in a LEAFDATA tree. The maximum
-** payload fraction for a LEAFDATA tree is always 100% (or 255) and it
-** not specified in the header.
-**
-** Each btree pages is divided into three sections: The header, the
-** cell pointer array, and the cell content area. Page 1 also has a 100-byte
-** file header that occurs before the page header.
-**
-** |----------------|
-** | file header | 100 bytes. Page 1 only.
-** |----------------|
-** | page header | 8 bytes for leaves. 12 bytes for interior nodes
-** |----------------|
-** | cell pointer | | 2 bytes per cell. Sorted order.
-** | array | | Grows downward
-** | | v
-** |----------------|
-** | unallocated |
-** | space |
-** |----------------| ^ Grows upwards
-** | cell content | | Arbitrary order interspersed with freeblocks.
-** | area | | and free space fragments.
-** |----------------|
-**
-** The page headers looks like this:
-**
-** OFFSET SIZE DESCRIPTION
-** 0 1 Flags. 1: intkey, 2: zerodata, 4: leafdata, 8: leaf
-** 1 2 byte offset to the first freeblock
-** 3 2 number of cells on this page
-** 5 2 first byte of the cell content area
-** 7 1 number of fragmented free bytes
-** 8 4 Right child (the Ptr(N) value). Omitted on leaves.
-**
-** The flags define the format of this btree page. The leaf flag means that
-** this page has no children. The zerodata flag means that this page carries
-** only keys and no data. The intkey flag means that the key is an integer
-** which is stored in the key size entry of the cell header rather than in
-** the payload area.
-**
-** The cell pointer array begins on the first byte after the page header.
-** The cell pointer array contains zero or more 2-byte numbers which are
-** offsets from the beginning of the page to the cell content in the cell
-** content area. The cell pointers occur in sorted order. The system strives
-** to keep free space after the last cell pointer so that new cells can
-** be easily added without having to defragment the page.
-**
-** Cell content is stored at the very end of the page and grows toward the
-** beginning of the page.
-**
-** Unused space within the cell content area is collected into a linked list of
-** freeblocks. Each freeblock is at least 4 bytes in size. The byte offset
-** to the first freeblock is given in the header. Freeblocks occur in
-** increasing order. Because a freeblock must be at least 4 bytes in size,
-** any group of 3 or fewer unused bytes in the cell content area cannot
-** exist on the freeblock chain. A group of 3 or fewer free bytes is called
-** a fragment. The total number of bytes in all fragments is recorded.
-** in the page header at offset 7.
-**
-** SIZE DESCRIPTION
-** 2 Byte offset of the next freeblock
-** 2 Bytes in this freeblock
-**
-** Cells are of variable length. Cells are stored in the cell content area at
-** the end of the page. Pointers to the cells are in the cell pointer array
-** that immediately follows the page header. Cells is not necessarily
-** contiguous or in order, but cell pointers are contiguous and in order.
-**
-** Cell content makes use of variable length integers. A variable
-** length integer is 1 to 9 bytes where the lower 7 bits of each
-** byte are used. The integer consists of all bytes that have bit 8 set and
-** the first byte with bit 8 clear. The most significant byte of the integer
-** appears first. A variable-length integer may not be more than 9 bytes long.
-** As a special case, all 8 bytes of the 9th byte are used as data. This
-** allows a 64-bit integer to be encoded in 9 bytes.
-**
-** 0x00 becomes 0x00000000
-** 0x7f becomes 0x0000007f
-** 0x81 0x00 becomes 0x00000080
-** 0x82 0x00 becomes 0x00000100
-** 0x80 0x7f becomes 0x0000007f
-** 0x8a 0x91 0xd1 0xac 0x78 becomes 0x12345678
-** 0x81 0x81 0x81 0x81 0x01 becomes 0x10204081
-**
-** Variable length integers are used for rowids and to hold the number of
-** bytes of key and data in a btree cell.
-**
-** The content of a cell looks like this:
-**
-** SIZE DESCRIPTION
-** 4 Page number of the left child. Omitted if leaf flag is set.
-** var Number of bytes of data. Omitted if the zerodata flag is set.
-** var Number of bytes of key. Or the key itself if intkey flag is set.
-** * Payload
-** 4 First page of the overflow chain. Omitted if no overflow
-**
-** Overflow pages form a linked list. Each page except the last is completely
-** filled with data (pagesize - 4 bytes). The last page can have as little
-** as 1 byte of data.
-**
-** SIZE DESCRIPTION
-** 4 Page number of next overflow page
-** * Data
-**
-** Freelist pages come in two subtypes: trunk pages and leaf pages. The
-** file header points to the first in a linked list of trunk page. Each trunk
-** page points to multiple leaf pages. The content of a leaf page is
-** unspecified. A trunk page looks like this:
-**
-** SIZE DESCRIPTION
-** 4 Page number of next trunk page
-** 4 Number of leaf pointers on this page
-** * zero or more pages numbers of leaves
-*/
-/* #include "sqliteInt.h" */
-
-
-/* The following value is the maximum cell size assuming a maximum page
-** size give above.
-*/
-#define MX_CELL_SIZE(pBt) ((int)(pBt->pageSize-8))
-
-/* The maximum number of cells on a single page of the database. This
-** assumes a minimum cell size of 6 bytes (4 bytes for the cell itself
-** plus 2 bytes for the index to the cell in the page header). Such
-** small cells will be rare, but they are possible.
-*/
-#define MX_CELL(pBt) ((pBt->pageSize-8)/6)
-
-/* Forward declarations */
-typedef struct MemPage MemPage;
-typedef struct BtLock BtLock;
-typedef struct CellInfo CellInfo;
-
-/*
-** This is a magic string that appears at the beginning of every
-** SQLite database in order to identify the file as a real database.
-**
-** You can change this value at compile-time by specifying a
-** -DSQLITE_FILE_HEADER="..." on the compiler command-line. The
-** header must be exactly 16 bytes including the zero-terminator so
-** the string itself should be 15 characters long. If you change
-** the header, then your custom library will not be able to read
-** databases generated by the standard tools and the standard tools
-** will not be able to read databases created by your custom library.
-*/
-#ifndef SQLITE_FILE_HEADER /* 123456789 123456 */
-# define SQLITE_FILE_HEADER "SQLite format 3"
-#endif
-
-/*
-** Page type flags. An ORed combination of these flags appear as the
-** first byte of on-disk image of every BTree page.
-*/
-#define PTF_INTKEY 0x01
-#define PTF_ZERODATA 0x02
-#define PTF_LEAFDATA 0x04
-#define PTF_LEAF 0x08
-
-/*
-** An instance of this object stores information about each a single database
-** page that has been loaded into memory. The information in this object
-** is derived from the raw on-disk page content.
-**
-** As each database page is loaded into memory, the pager allocats an
-** instance of this object and zeros the first 8 bytes. (This is the
-** "extra" information associated with each page of the pager.)
-**
-** Access to all fields of this structure is controlled by the mutex
-** stored in MemPage.pBt->mutex.
-*/
-struct MemPage {
- u8 isInit; /* True if previously initialized. MUST BE FIRST! */
- u8 bBusy; /* Prevent endless loops on corrupt database files */
- u8 intKey; /* True if table b-trees. False for index b-trees */
- u8 intKeyLeaf; /* True if the leaf of an intKey table */
- Pgno pgno; /* Page number for this page */
- /* Only the first 8 bytes (above) are zeroed by pager.c when a new page
- ** is allocated. All fields that follow must be initialized before use */
- u8 leaf; /* True if a leaf page */
- u8 hdrOffset; /* 100 for page 1. 0 otherwise */
- u8 childPtrSize; /* 0 if leaf==1. 4 if leaf==0 */
- u8 max1bytePayload; /* min(maxLocal,127) */
- u8 nOverflow; /* Number of overflow cell bodies in aCell[] */
- u16 maxLocal; /* Copy of BtShared.maxLocal or BtShared.maxLeaf */
- u16 minLocal; /* Copy of BtShared.minLocal or BtShared.minLeaf */
- u16 cellOffset; /* Index in aData of first cell pointer */
- int nFree; /* Number of free bytes on the page. -1 for unknown */
- u16 nCell; /* Number of cells on this page, local and ovfl */
- u16 maskPage; /* Mask for page offset */
- u16 aiOvfl[4]; /* Insert the i-th overflow cell before the aiOvfl-th
- ** non-overflow cell */
- u8 *apOvfl[4]; /* Pointers to the body of overflow cells */
- BtShared *pBt; /* Pointer to BtShared that this page is part of */
- u8 *aData; /* Pointer to disk image of the page data */
- u8 *aDataEnd; /* One byte past the end of usable data */
- u8 *aCellIdx; /* The cell index area */
- u8 *aDataOfst; /* Same as aData for leaves. aData+4 for interior */
- DbPage *pDbPage; /* Pager page handle */
- u16 (*xCellSize)(MemPage*,u8*); /* cellSizePtr method */
- void (*xParseCell)(MemPage*,u8*,CellInfo*); /* btreeParseCell method */
-};
-
-/*
-** A linked list of the following structures is stored at BtShared.pLock.
-** Locks are added (or upgraded from READ_LOCK to WRITE_LOCK) when a cursor
-** is opened on the table with root page BtShared.iTable. Locks are removed
-** from this list when a transaction is committed or rolled back, or when
-** a btree handle is closed.
-*/
-struct BtLock {
- Btree *pBtree; /* Btree handle holding this lock */
- Pgno iTable; /* Root page of table */
- u8 eLock; /* READ_LOCK or WRITE_LOCK */
- BtLock *pNext; /* Next in BtShared.pLock list */
-};
-
-/* Candidate values for BtLock.eLock */
-#define READ_LOCK 1
-#define WRITE_LOCK 2
-
-/* A Btree handle
-**
-** A database connection contains a pointer to an instance of
-** this object for every database file that it has open. This structure
-** is opaque to the database connection. The database connection cannot
-** see the internals of this structure and only deals with pointers to
-** this structure.
-**
-** For some database files, the same underlying database cache might be
-** shared between multiple connections. In that case, each connection
-** has it own instance of this object. But each instance of this object
-** points to the same BtShared object. The database cache and the
-** schema associated with the database file are all contained within
-** the BtShared object.
-**
-** All fields in this structure are accessed under sqlite3.mutex.
-** The pBt pointer itself may not be changed while there exists cursors
-** in the referenced BtShared that point back to this Btree since those
-** cursors have to go through this Btree to find their BtShared and
-** they often do so without holding sqlite3.mutex.
-*/
-struct Btree {
- sqlite3 *db; /* The database connection holding this btree */
- BtShared *pBt; /* Sharable content of this btree */
- u8 inTrans; /* TRANS_NONE, TRANS_READ or TRANS_WRITE */
- u8 sharable; /* True if we can share pBt with another db */
- u8 locked; /* True if db currently has pBt locked */
- u8 hasIncrblobCur; /* True if there are one or more Incrblob cursors */
- int wantToLock; /* Number of nested calls to sqlite3BtreeEnter() */
- int nBackup; /* Number of backup operations reading this btree */
- u32 iDataVersion; /* Combines with pBt->pPager->iDataVersion */
- Btree *pNext; /* List of other sharable Btrees from the same db */
- Btree *pPrev; /* Back pointer of the same list */
-#ifndef SQLITE_OMIT_SHARED_CACHE
- BtLock lock; /* Object used to lock page 1 */
-#endif
-};
-
-/*
-** Btree.inTrans may take one of the following values.
-**
-** If the shared-data extension is enabled, there may be multiple users
-** of the Btree structure. At most one of these may open a write transaction,
-** but any number may have active read transactions.
-*/
-#define TRANS_NONE 0
-#define TRANS_READ 1
-#define TRANS_WRITE 2
-
-/*
-** An instance of this object represents a single database file.
-**
-** A single database file can be in use at the same time by two
-** or more database connections. When two or more connections are
-** sharing the same database file, each connection has it own
-** private Btree object for the file and each of those Btrees points
-** to this one BtShared object. BtShared.nRef is the number of
-** connections currently sharing this database file.
-**
-** Fields in this structure are accessed under the BtShared.mutex
-** mutex, except for nRef and pNext which are accessed under the
-** global SQLITE_MUTEX_STATIC_MASTER mutex. The pPager field
-** may not be modified once it is initially set as long as nRef>0.
-** The pSchema field may be set once under BtShared.mutex and
-** thereafter is unchanged as long as nRef>0.
-**
-** isPending:
-**
-** If a BtShared client fails to obtain a write-lock on a database
-** table (because there exists one or more read-locks on the table),
-** the shared-cache enters 'pending-lock' state and isPending is
-** set to true.
-**
-** The shared-cache leaves the 'pending lock' state when either of
-** the following occur:
-**
-** 1) The current writer (BtShared.pWriter) concludes its transaction, OR
-** 2) The number of locks held by other connections drops to zero.
-**
-** while in the 'pending-lock' state, no connection may start a new
-** transaction.
-**
-** This feature is included to help prevent writer-starvation.
-*/
-struct BtShared {
- Pager *pPager; /* The page cache */
- sqlite3 *db; /* Database connection currently using this Btree */
- BtCursor *pCursor; /* A list of all open cursors */
- MemPage *pPage1; /* First page of the database */
- u8 openFlags; /* Flags to sqlite3BtreeOpen() */
-#ifndef SQLITE_OMIT_AUTOVACUUM
- u8 autoVacuum; /* True if auto-vacuum is enabled */
- u8 incrVacuum; /* True if incr-vacuum is enabled */
- u8 bDoTruncate; /* True to truncate db on commit */
-#endif
- u8 inTransaction; /* Transaction state */
- u8 max1bytePayload; /* Maximum first byte of cell for a 1-byte payload */
-#ifdef SQLITE_HAS_CODEC
- u8 optimalReserve; /* Desired amount of reserved space per page */
-#endif
- u16 btsFlags; /* Boolean parameters. See BTS_* macros below */
- u16 maxLocal; /* Maximum local payload in non-LEAFDATA tables */
- u16 minLocal; /* Minimum local payload in non-LEAFDATA tables */
- u16 maxLeaf; /* Maximum local payload in a LEAFDATA table */
- u16 minLeaf; /* Minimum local payload in a LEAFDATA table */
- u32 pageSize; /* Total number of bytes on a page */
- u32 usableSize; /* Number of usable bytes on each page */
- int nTransaction; /* Number of open transactions (read + write) */
- u32 nPage; /* Number of pages in the database */
- void *pSchema; /* Pointer to space allocated by sqlite3BtreeSchema() */
- void (*xFreeSchema)(void*); /* Destructor for BtShared.pSchema */
- sqlite3_mutex *mutex; /* Non-recursive mutex required to access this object */
- Bitvec *pHasContent; /* Set of pages moved to free-list this transaction */
-#ifndef SQLITE_OMIT_SHARED_CACHE
- int nRef; /* Number of references to this structure */
- BtShared *pNext; /* Next on a list of sharable BtShared structs */
- BtLock *pLock; /* List of locks held on this shared-btree struct */
- Btree *pWriter; /* Btree with currently open write transaction */
-#endif
- u8 *pTmpSpace; /* Temp space sufficient to hold a single cell */
-};
-
-/*
-** Allowed values for BtShared.btsFlags
-*/
-#define BTS_READ_ONLY 0x0001 /* Underlying file is readonly */
-#define BTS_PAGESIZE_FIXED 0x0002 /* Page size can no longer be changed */
-#define BTS_SECURE_DELETE 0x0004 /* PRAGMA secure_delete is enabled */
-#define BTS_OVERWRITE 0x0008 /* Overwrite deleted content with zeros */
-#define BTS_FAST_SECURE 0x000c /* Combination of the previous two */
-#define BTS_INITIALLY_EMPTY 0x0010 /* Database was empty at trans start */
-#define BTS_NO_WAL 0x0020 /* Do not open write-ahead-log files */
-#define BTS_EXCLUSIVE 0x0040 /* pWriter has an exclusive lock */
-#define BTS_PENDING 0x0080 /* Waiting for read-locks to clear */
-
-/*
-** An instance of the following structure is used to hold information
-** about a cell. The parseCellPtr() function fills in this structure
-** based on information extract from the raw disk page.
-*/
-struct CellInfo {
- i64 nKey; /* The key for INTKEY tables, or nPayload otherwise */
- u8 *pPayload; /* Pointer to the start of payload */
- u32 nPayload; /* Bytes of payload */
- u16 nLocal; /* Amount of payload held locally, not on overflow */
- u16 nSize; /* Size of the cell content on the main b-tree page */
-};
-
-/*
-** Maximum depth of an SQLite B-Tree structure. Any B-Tree deeper than
-** this will be declared corrupt. This value is calculated based on a
-** maximum database size of 2^31 pages a minimum fanout of 2 for a
-** root-node and 3 for all other internal nodes.
-**
-** If a tree that appears to be taller than this is encountered, it is
-** assumed that the database is corrupt.
-*/
-#define BTCURSOR_MAX_DEPTH 20
-
-/*
-** A cursor is a pointer to a particular entry within a particular
-** b-tree within a database file.
-**
-** The entry is identified by its MemPage and the index in
-** MemPage.aCell[] of the entry.
-**
-** A single database file can be shared by two more database connections,
-** but cursors cannot be shared. Each cursor is associated with a
-** particular database connection identified BtCursor.pBtree.db.
-**
-** Fields in this structure are accessed under the BtShared.mutex
-** found at self->pBt->mutex.
-**
-** skipNext meaning:
-** The meaning of skipNext depends on the value of eState:
-**
-** eState Meaning of skipNext
-** VALID skipNext is meaningless and is ignored
-** INVALID skipNext is meaningless and is ignored
-** SKIPNEXT sqlite3BtreeNext() is a no-op if skipNext>0 and
-** sqlite3BtreePrevious() is no-op if skipNext<0.
-** REQUIRESEEK restoreCursorPosition() restores the cursor to
-** eState=SKIPNEXT if skipNext!=0
-** FAULT skipNext holds the cursor fault error code.
-*/
-struct BtCursor {
- u8 eState; /* One of the CURSOR_XXX constants (see below) */
- u8 curFlags; /* zero or more BTCF_* flags defined below */
- u8 curPagerFlags; /* Flags to send to sqlite3PagerGet() */
- u8 hints; /* As configured by CursorSetHints() */
- int skipNext; /* Prev() is noop if negative. Next() is noop if positive.
- ** Error code if eState==CURSOR_FAULT */
- Btree *pBtree; /* The Btree to which this cursor belongs */
- Pgno *aOverflow; /* Cache of overflow page locations */
- void *pKey; /* Saved key that was cursor last known position */
- /* All fields above are zeroed when the cursor is allocated. See
- ** sqlite3BtreeCursorZero(). Fields that follow must be manually
- ** initialized. */
-#define BTCURSOR_FIRST_UNINIT pBt /* Name of first uninitialized field */
- BtShared *pBt; /* The BtShared this cursor points to */
- BtCursor *pNext; /* Forms a linked list of all cursors */
- CellInfo info; /* A parse of the cell we are pointing at */
- i64 nKey; /* Size of pKey, or last integer key */
- Pgno pgnoRoot; /* The root page of this tree */
- i8 iPage; /* Index of current page in apPage */
- u8 curIntKey; /* Value of apPage[0]->intKey */
- u16 ix; /* Current index for apPage[iPage] */
- u16 aiIdx[BTCURSOR_MAX_DEPTH-1]; /* Current index in apPage[i] */
- struct KeyInfo *pKeyInfo; /* Arg passed to comparison function */
- MemPage *pPage; /* Current page */
- MemPage *apPage[BTCURSOR_MAX_DEPTH-1]; /* Stack of parents of current page */
-};
-
-/*
-** Legal values for BtCursor.curFlags
-*/
-#define BTCF_WriteFlag 0x01 /* True if a write cursor */
-#define BTCF_ValidNKey 0x02 /* True if info.nKey is valid */
-#define BTCF_ValidOvfl 0x04 /* True if aOverflow is valid */
-#define BTCF_AtLast 0x08 /* Cursor is pointing ot the last entry */
-#define BTCF_Incrblob 0x10 /* True if an incremental I/O handle */
-#define BTCF_Multiple 0x20 /* Maybe another cursor on the same btree */
-#define BTCF_Pinned 0x40 /* Cursor is busy and cannot be moved */
-
-/*
-** Potential values for BtCursor.eState.
-**
-** CURSOR_INVALID:
-** Cursor does not point to a valid entry. This can happen (for example)
-** because the table is empty or because BtreeCursorFirst() has not been
-** called.
-**
-** CURSOR_VALID:
-** Cursor points to a valid entry. getPayload() etc. may be called.
-**
-** CURSOR_SKIPNEXT:
-** Cursor is valid except that the Cursor.skipNext field is non-zero
-** indicating that the next sqlite3BtreeNext() or sqlite3BtreePrevious()
-** operation should be a no-op.
-**
-** CURSOR_REQUIRESEEK:
-** The table that this cursor was opened on still exists, but has been
-** modified since the cursor was last used. The cursor position is saved
-** in variables BtCursor.pKey and BtCursor.nKey. When a cursor is in
-** this state, restoreCursorPosition() can be called to attempt to
-** seek the cursor to the saved position.
-**
-** CURSOR_FAULT:
-** An unrecoverable error (an I/O error or a malloc failure) has occurred
-** on a different connection that shares the BtShared cache with this
-** cursor. The error has left the cache in an inconsistent state.
-** Do nothing else with this cursor. Any attempt to use the cursor
-** should return the error code stored in BtCursor.skipNext
-*/
-#define CURSOR_VALID 0
-#define CURSOR_INVALID 1
-#define CURSOR_SKIPNEXT 2
-#define CURSOR_REQUIRESEEK 3
-#define CURSOR_FAULT 4
-
-/*
-** The database page the PENDING_BYTE occupies. This page is never used.
-*/
-# define PENDING_BYTE_PAGE(pBt) PAGER_MJ_PGNO(pBt)
-
-/*
-** These macros define the location of the pointer-map entry for a
-** database page. The first argument to each is the number of usable
-** bytes on each page of the database (often 1024). The second is the
-** page number to look up in the pointer map.
-**
-** PTRMAP_PAGENO returns the database page number of the pointer-map
-** page that stores the required pointer. PTRMAP_PTROFFSET returns
-** the offset of the requested map entry.
-**
-** If the pgno argument passed to PTRMAP_PAGENO is a pointer-map page,
-** then pgno is returned. So (pgno==PTRMAP_PAGENO(pgsz, pgno)) can be
-** used to test if pgno is a pointer-map page. PTRMAP_ISPAGE implements
-** this test.
-*/
-#define PTRMAP_PAGENO(pBt, pgno) ptrmapPageno(pBt, pgno)
-#define PTRMAP_PTROFFSET(pgptrmap, pgno) (5*(pgno-pgptrmap-1))
-#define PTRMAP_ISPAGE(pBt, pgno) (PTRMAP_PAGENO((pBt),(pgno))==(pgno))
-
-/*
-** The pointer map is a lookup table that identifies the parent page for
-** each child page in the database file. The parent page is the page that
-** contains a pointer to the child. Every page in the database contains
-** 0 or 1 parent pages. (In this context 'database page' refers
-** to any page that is not part of the pointer map itself.) Each pointer map
-** entry consists of a single byte 'type' and a 4 byte parent page number.
-** The PTRMAP_XXX identifiers below are the valid types.
-**
-** The purpose of the pointer map is to facility moving pages from one
-** position in the file to another as part of autovacuum. When a page
-** is moved, the pointer in its parent must be updated to point to the
-** new location. The pointer map is used to locate the parent page quickly.
-**
-** PTRMAP_ROOTPAGE: The database page is a root-page. The page-number is not
-** used in this case.
-**
-** PTRMAP_FREEPAGE: The database page is an unused (free) page. The page-number
-** is not used in this case.
-**
-** PTRMAP_OVERFLOW1: The database page is the first page in a list of
-** overflow pages. The page number identifies the page that
-** contains the cell with a pointer to this overflow page.
-**
-** PTRMAP_OVERFLOW2: The database page is the second or later page in a list of
-** overflow pages. The page-number identifies the previous
-** page in the overflow page list.
-**
-** PTRMAP_BTREE: The database page is a non-root btree page. The page number
-** identifies the parent page in the btree.
-*/
-#define PTRMAP_ROOTPAGE 1
-#define PTRMAP_FREEPAGE 2
-#define PTRMAP_OVERFLOW1 3
-#define PTRMAP_OVERFLOW2 4
-#define PTRMAP_BTREE 5
-
-/* A bunch of assert() statements to check the transaction state variables
-** of handle p (type Btree*) are internally consistent.
-*/
-#define btreeIntegrity(p) \
- assert( p->pBt->inTransaction!=TRANS_NONE || p->pBt->nTransaction==0 ); \
- assert( p->pBt->inTransaction>=p->inTrans );
-
-
-/*
-** The ISAUTOVACUUM macro is used within balance_nonroot() to determine
-** if the database supports auto-vacuum or not. Because it is used
-** within an expression that is an argument to another macro
-** (sqliteMallocRaw), it is not possible to use conditional compilation.
-** So, this macro is defined instead.
-*/
-#ifndef SQLITE_OMIT_AUTOVACUUM
-#define ISAUTOVACUUM (pBt->autoVacuum)
-#else
-#define ISAUTOVACUUM 0
-#endif
-
-
-/*
-** This structure is passed around through all the sanity checking routines
-** in order to keep track of some global state information.
-**
-** The aRef[] array is allocated so that there is 1 bit for each page in
-** the database. As the integrity-check proceeds, for each page used in
-** the database the corresponding bit is set. This allows integrity-check to
-** detect pages that are used twice and orphaned pages (both of which
-** indicate corruption).
-*/
-typedef struct IntegrityCk IntegrityCk;
-struct IntegrityCk {
- BtShared *pBt; /* The tree being checked out */
- Pager *pPager; /* The associated pager. Also accessible by pBt->pPager */
- u8 *aPgRef; /* 1 bit per page in the db (see above) */
- Pgno nPage; /* Number of pages in the database */
- int mxErr; /* Stop accumulating errors when this reaches zero */
- int nErr; /* Number of messages written to zErrMsg so far */
- int mallocFailed; /* A memory allocation error has occurred */
- const char *zPfx; /* Error message prefix */
- int v1, v2; /* Values for up to two %d fields in zPfx */
- StrAccum errMsg; /* Accumulate the error message text here */
- u32 *heap; /* Min-heap used for analyzing cell coverage */
- sqlite3 *db; /* Database connection running the check */
-};
-
-/*
-** Routines to read or write a two- and four-byte big-endian integer values.
-*/
-#define get2byte(x) ((x)[0]<<8 | (x)[1])
-#define put2byte(p,v) ((p)[0] = (u8)((v)>>8), (p)[1] = (u8)(v))
-#define get4byte sqlite3Get4byte
-#define put4byte sqlite3Put4byte
-
-/*
-** get2byteAligned(), unlike get2byte(), requires that its argument point to a
-** two-byte aligned address. get2bytea() is only used for accessing the
-** cell addresses in a btree header.
-*/
-#if SQLITE_BYTEORDER==4321
-# define get2byteAligned(x) (*(u16*)(x))
-#elif SQLITE_BYTEORDER==1234 && GCC_VERSION>=4008000
-# define get2byteAligned(x) __builtin_bswap16(*(u16*)(x))
-#elif SQLITE_BYTEORDER==1234 && MSVC_VERSION>=1300
-# define get2byteAligned(x) _byteswap_ushort(*(u16*)(x))
-#else
-# define get2byteAligned(x) ((x)[0]<<8 | (x)[1])
-#endif
-
-/************** End of btreeInt.h ********************************************/
-/************** Continuing where we left off in crypto.h *********************/
-/* #include "pager.h" */
-
-/* extensions defined in pager.c */
-SQLITE_PRIVATE void *sqlite3PagerGetCodec(Pager*);
-SQLITE_PRIVATE void sqlite3PagerSetCodec(Pager*, void *(*)(void*,void*,Pgno,int), void (*)(void*,int,int), void (*)(void*), void *);
-SQLITE_API int sqlite3pager_is_mj_pgno(Pager*, Pgno);
-SQLITE_API void sqlite3pager_error(Pager*, int);
-SQLITE_API void sqlite3pager_reset(Pager *pPager);
-
-#if !defined (SQLCIPHER_CRYPTO_CC) \
- && !defined (SQLCIPHER_CRYPTO_LIBTOMCRYPT) \
- && !defined (SQLCIPHER_CRYPTO_NSS) \
- && !defined (SQLCIPHER_CRYPTO_OPENSSL)
-#define SQLCIPHER_CRYPTO_OPENSSL
-#endif
-
-#define FILE_HEADER_SZ 16
-
-#define CIPHER_XSTR(s) CIPHER_STR(s)
-#define CIPHER_STR(s) #s
-
-#ifndef CIPHER_VERSION_NUMBER
-#define CIPHER_VERSION_NUMBER 4.4.0
-#endif
-
-#ifndef CIPHER_VERSION_BUILD
-#define CIPHER_VERSION_BUILD community
-#endif
-
-#define CIPHER_DECRYPT 0
-#define CIPHER_ENCRYPT 1
-
-#define CIPHER_READ_CTX 0
-#define CIPHER_WRITE_CTX 1
-#define CIPHER_READWRITE_CTX 2
-
-#ifndef PBKDF2_ITER
-#define PBKDF2_ITER 256000
-#endif
-
-/* possible flags for cipher_ctx->flags */
-#define CIPHER_FLAG_HMAC 0x01
-#define CIPHER_FLAG_LE_PGNO 0x02
-#define CIPHER_FLAG_BE_PGNO 0x04
-
-#ifndef DEFAULT_CIPHER_FLAGS
-#define DEFAULT_CIPHER_FLAGS CIPHER_FLAG_HMAC | CIPHER_FLAG_LE_PGNO
-#endif
-
-
-/* by default, sqlcipher will use a reduced number of iterations to generate
- the HMAC key / or transform a raw cipher key
- */
-#ifndef FAST_PBKDF2_ITER
-#define FAST_PBKDF2_ITER 2
-#endif
-
-/* this if a fixed random array that will be xor'd with the database salt to ensure that the
- salt passed to the HMAC key derivation function is not the same as that used to derive
- the encryption key. This can be overridden at compile time but it will make the resulting
- binary incompatible with the default builds when using HMAC. A future version of SQLcipher
- will likely allow this to be defined at runtime via pragma */
-#ifndef HMAC_SALT_MASK
-#define HMAC_SALT_MASK 0x3a
-#endif
-
-#ifndef CIPHER_MAX_IV_SZ
-#define CIPHER_MAX_IV_SZ 16
-#endif
-
-#ifndef CIPHER_MAX_KEY_SZ
-#define CIPHER_MAX_KEY_SZ 64
-#endif
-
-#ifdef __ANDROID__
-#include
-#endif
-
-#ifdef CODEC_DEBUG
-#ifdef __ANDROID__
-#define CODEC_TRACE(...) {__android_log_print(ANDROID_LOG_DEBUG, "sqlcipher", __VA_ARGS__);}
-#else
-#define CODEC_TRACE(...) {fprintf(stderr, __VA_ARGS__);fflush(stderr);}
-#endif
-#else
-#define CODEC_TRACE(...)
-#endif
-
-#ifdef CODEC_DEBUG_MUTEX
-#define CODEC_TRACE_MUTEX(...) CODEC_TRACE(__VA_ARGS__)
-#else
-#define CODEC_TRACE_MUTEX(...)
-#endif
-
-#ifdef CODEC_DEBUG_MEMORY
-#define CODEC_TRACE_MEMORY(...) CODEC_TRACE(__VA_ARGS__)
-#else
-#define CODEC_TRACE_MEMORY(...)
-#endif
-
-#ifdef CODEC_DEBUG_PAGEDATA
-#define CODEC_HEXDUMP(DESC,BUFFER,LEN) \
- { \
- int __pctr; \
- printf(DESC); \
- for(__pctr=0; __pctr < LEN; __pctr++) { \
- if(__pctr % 16 == 0) printf("\n%05x: ",__pctr); \
- printf("%02x ",((unsigned char*) BUFFER)[__pctr]); \
- } \
- printf("\n"); \
- fflush(stdout); \
- }
-#else
-#define CODEC_HEXDUMP(DESC,BUFFER,LEN)
-#endif
-
-/* end extensions defined in pager.c */
-
-/*
-** Simple shared routines for converting hex char strings to binary data
- */
-static int cipher_hex2int(char c) {
- return (c>='0' && c<='9') ? (c)-'0' :
- (c>='A' && c<='F') ? (c)-'A'+10 :
- (c>='a' && c<='f') ? (c)-'a'+10 : 0;
-}
-
-static void cipher_hex2bin(const unsigned char *hex, int sz, unsigned char *out){
- int i;
- for(i = 0; i < sz; i += 2){
- out[i/2] = (cipher_hex2int(hex[i])<<4) | cipher_hex2int(hex[i+1]);
- }
-}
-
-static void cipher_bin2hex(const unsigned char* in, int sz, char *out) {
- int i;
- for(i=0; i < sz; i++) {
- sqlite3_snprintf(3, out + (i*2), "%02x ", in[i]);
- }
-}
-
-static int cipher_isHex(const unsigned char *hex, int sz){
- int i;
- for(i = 0; i < sz; i++) {
- unsigned char c = hex[i];
- if ((c < '0' || c > '9') &&
- (c < 'A' || c > 'F') &&
- (c < 'a' || c > 'f')) {
- return 0;
- }
- }
- return 1;
-}
-
-/* extensions defined in crypto_impl.c */
-/* the default implementation of SQLCipher uses a cipher_ctx
- to keep track of read / write state separately. The following
- struct and associated functions are defined here */
-typedef struct {
- int derive_key;
- int pass_sz;
- unsigned char *key;
- unsigned char *hmac_key;
- unsigned char *pass;
- char *keyspec;
-} cipher_ctx;
-
-
-typedef struct {
- int store_pass;
- int kdf_iter;
- int fast_kdf_iter;
- int kdf_salt_sz;
- int key_sz;
- int iv_sz;
- int block_sz;
- int page_sz;
- int keyspec_sz;
- int reserve_sz;
- int hmac_sz;
- int plaintext_header_sz;
- int hmac_algorithm;
- int kdf_algorithm;
- unsigned int skip_read_hmac;
- unsigned int need_kdf_salt;
- unsigned int flags;
- unsigned char *kdf_salt;
- unsigned char *hmac_kdf_salt;
- unsigned char *buffer;
- Btree *pBt;
- cipher_ctx *read_ctx;
- cipher_ctx *write_ctx;
- sqlcipher_provider *provider;
- void *provider_ctx;
-} codec_ctx ;
-
-/* crypto.c functions */
-int sqlcipher_codec_pragma(sqlite3*, int, Parse*, const char *, const char*);
-SQLITE_PRIVATE int sqlite3CodecAttach(sqlite3*, int, const void *, int);
-SQLITE_PRIVATE void sqlite3CodecGetKey(sqlite3*, int, void**, int*);
-void sqlcipher_exportFunc(sqlite3_context *, int, sqlite3_value **);
-
-/* crypto_impl.c functions */
-
-void sqlcipher_init_memmethods(void);
-
-/* activation and initialization */
-void sqlcipher_activate(void);
-void sqlcipher_deactivate(void);
-
-int sqlcipher_codec_ctx_init(codec_ctx **, Db *, Pager *, const void *, int);
-void sqlcipher_codec_ctx_free(codec_ctx **);
-int sqlcipher_codec_key_derive(codec_ctx *);
-int sqlcipher_codec_key_copy(codec_ctx *, int);
-
-/* page cipher implementation */
-int sqlcipher_page_cipher(codec_ctx *, int, Pgno, int, int, unsigned char *, unsigned char *);
-
-/* context setters & getters */
-void sqlcipher_codec_ctx_set_error(codec_ctx *, int);
-
-void sqlcipher_codec_get_pass(codec_ctx *, void **, int *);
-int sqlcipher_codec_ctx_set_pass(codec_ctx *, const void *, int, int);
-void sqlcipher_codec_get_keyspec(codec_ctx *, void **zKey, int *nKey);
-
-int sqlcipher_codec_ctx_set_pagesize(codec_ctx *, int);
-int sqlcipher_codec_ctx_get_pagesize(codec_ctx *);
-int sqlcipher_codec_ctx_get_reservesize(codec_ctx *);
-
-void sqlcipher_set_default_pagesize(int page_size);
-int sqlcipher_get_default_pagesize(void);
-
-void sqlcipher_set_default_kdf_iter(int iter);
-int sqlcipher_get_default_kdf_iter(void);
-int sqlcipher_codec_ctx_set_kdf_iter(codec_ctx *, int);
-int sqlcipher_codec_ctx_get_kdf_iter(codec_ctx *ctx);
-
-int sqlcipher_codec_ctx_set_kdf_salt(codec_ctx *ctx, unsigned char *salt, int sz);
-int sqlcipher_codec_ctx_get_kdf_salt(codec_ctx *ctx, void **salt);
-
-int sqlcipher_codec_ctx_set_fast_kdf_iter(codec_ctx *, int);
-int sqlcipher_codec_ctx_get_fast_kdf_iter(codec_ctx *);
-
-const char* sqlcipher_codec_ctx_get_cipher(codec_ctx *ctx);
-
-void* sqlcipher_codec_ctx_get_data(codec_ctx *);
-
-void sqlcipher_set_default_use_hmac(int use);
-int sqlcipher_get_default_use_hmac(void);
-
-void sqlcipher_set_hmac_salt_mask(unsigned char mask);
-unsigned char sqlcipher_get_hmac_salt_mask(void);
-
-int sqlcipher_codec_ctx_set_use_hmac(codec_ctx *ctx, int use);
-int sqlcipher_codec_ctx_get_use_hmac(codec_ctx *ctx);
-
-int sqlcipher_codec_ctx_set_flag(codec_ctx *ctx, unsigned int flag);
-int sqlcipher_codec_ctx_unset_flag(codec_ctx *ctx, unsigned int flag);
-int sqlcipher_codec_ctx_get_flag(codec_ctx *ctx, unsigned int flag);
-
-const char* sqlcipher_codec_get_cipher_provider(codec_ctx *ctx);
-int sqlcipher_codec_ctx_migrate(codec_ctx *ctx);
-int sqlcipher_codec_add_random(codec_ctx *ctx, const char *data, int random_sz);
-int sqlcipher_cipher_profile(sqlite3 *db, const char *destination);
-int sqlcipher_codec_get_store_pass(codec_ctx *ctx);
-void sqlcipher_codec_get_pass(codec_ctx *ctx, void **zKey, int *nKey);
-void sqlcipher_codec_set_store_pass(codec_ctx *ctx, int value);
-int sqlcipher_codec_fips_status(codec_ctx *ctx);
-const char* sqlcipher_codec_get_provider_version(codec_ctx *ctx);
-
-int sqlcipher_set_default_plaintext_header_size(int size);
-int sqlcipher_get_default_plaintext_header_size(void);
-int sqlcipher_codec_ctx_set_plaintext_header_size(codec_ctx *ctx, int size);
-int sqlcipher_codec_ctx_get_plaintext_header_size(codec_ctx *ctx);
-
-int sqlcipher_set_default_hmac_algorithm(int algorithm);
-int sqlcipher_get_default_hmac_algorithm(void);
-int sqlcipher_codec_ctx_set_hmac_algorithm(codec_ctx *ctx, int algorithm);
-int sqlcipher_codec_ctx_get_hmac_algorithm(codec_ctx *ctx);
-
-int sqlcipher_set_default_kdf_algorithm(int algorithm);
-int sqlcipher_get_default_kdf_algorithm(void);
-int sqlcipher_codec_ctx_set_kdf_algorithm(codec_ctx *ctx, int algorithm);
-int sqlcipher_codec_ctx_get_kdf_algorithm(codec_ctx *ctx);
-
-void sqlcipher_set_mem_security(int);
-int sqlcipher_get_mem_security(void);
-
-int sqlcipher_find_db_index(sqlite3 *db, const char *zDb);
-
-int sqlcipher_codec_ctx_integrity_check(codec_ctx *, Parse *, char *);
-
-#endif
-#endif
-/* END SQLCIPHER */
-
-/************** End of crypto.h **********************************************/
-/************** Continuing where we left off in crypto.c *********************/
-
-#ifdef SQLCIPHER_EXT
-#include "sqlcipher_ext.h"
-#endif
-
-/* Generate code to return a string value */
-static void codec_vdbe_return_string(Parse *pParse, const char *zLabel, const char *value, int value_type){
- Vdbe *v = sqlite3GetVdbe(pParse);
- sqlite3VdbeSetNumCols(v, 1);
- sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zLabel, SQLITE_STATIC);
- sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, value, value_type);
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
-}
-
-static int codec_set_btree_to_codec_pagesize(sqlite3 *db, Db *pDb, codec_ctx *ctx) {
- int rc, page_sz, reserve_sz;
-
- page_sz = sqlcipher_codec_ctx_get_pagesize(ctx);
- reserve_sz = sqlcipher_codec_ctx_get_reservesize(ctx);
-
- CODEC_TRACE("codec_set_btree_to_codec_pagesize: sqlite3BtreeSetPageSize() size=%d reserve=%d\n", page_sz, reserve_sz);
-
- CODEC_TRACE_MUTEX("codec_set_btree_to_codec_pagesize: entering database mutex %p\n", db->mutex);
- sqlite3_mutex_enter(db->mutex);
- CODEC_TRACE_MUTEX("codec_set_btree_to_codec_pagesize: entered database mutex %p\n", db->mutex);
- db->nextPagesize = page_sz;
-
- /* before forcing the page size we need to unset the BTS_PAGESIZE_FIXED flag, else
- sqliteBtreeSetPageSize will block the change */
- pDb->pBt->pBt->btsFlags &= ~BTS_PAGESIZE_FIXED;
- rc = sqlite3BtreeSetPageSize(pDb->pBt, page_sz, reserve_sz, 0);
-
- CODEC_TRACE("codec_set_btree_to_codec_pagesize: sqlite3BtreeSetPageSize returned %d\n", rc);
-
- CODEC_TRACE_MUTEX("codec_set_btree_to_codec_pagesize: leaving database mutex %p\n", db->mutex);
- sqlite3_mutex_leave(db->mutex);
- CODEC_TRACE_MUTEX("codec_set_btree_to_codec_pagesize: left database mutex %p\n", db->mutex);
-
- return rc;
-}
-
-static int codec_set_pass_key(sqlite3* db, int nDb, const void *zKey, int nKey, int for_ctx) {
- struct Db *pDb = &db->aDb[nDb];
- CODEC_TRACE("codec_set_pass_key: entered db=%p nDb=%d zKey=%s nKey=%d for_ctx=%d\n", db, nDb, (char *)zKey, nKey, for_ctx);
- if(pDb->pBt) {
- codec_ctx *ctx = (codec_ctx*) sqlite3PagerGetCodec(pDb->pBt->pBt->pPager);
-
- if(ctx) return sqlcipher_codec_ctx_set_pass(ctx, zKey, nKey, for_ctx);
- }
- return SQLITE_ERROR;
-}
-
-int sqlcipher_codec_pragma(sqlite3* db, int iDb, Parse *pParse, const char *zLeft, const char *zRight) {
- struct Db *pDb = &db->aDb[iDb];
- codec_ctx *ctx = NULL;
- int rc;
-
- if(pDb->pBt) {
- ctx = (codec_ctx*) sqlite3PagerGetCodec(pDb->pBt->pBt->pPager);
- }
-
- CODEC_TRACE("sqlcipher_codec_pragma: entered db=%p iDb=%d pParse=%p zLeft=%s zRight=%s ctx=%p\n", db, iDb, pParse, zLeft, zRight, ctx);
-
-#ifdef SQLCIPHER_EXT
- if( sqlite3StrICmp(zLeft, "cipher_license")==0 && zRight ){
- char *license_result = sqlite3_mprintf("%d", sqlcipher_license_key(zRight));
- codec_vdbe_return_string(pParse, "cipher_license", license_result, P4_DYNAMIC);
- } else
- if( sqlite3StrICmp(zLeft, "cipher_license")==0 && !zRight ){
- if(ctx) {
- char *license_result = sqlite3_mprintf("%d", ctx
- ? sqlcipher_license_key_status(ctx->provider)
- : SQLITE_ERROR);
- codec_vdbe_return_string(pParse, "cipher_license", license_result, P4_DYNAMIC);
- }
- } else
-#endif
- if( sqlite3StrICmp(zLeft, "cipher_fips_status")== 0 && !zRight ){
- if(ctx) {
- char *fips_mode_status = sqlite3_mprintf("%d", sqlcipher_codec_fips_status(ctx));
- codec_vdbe_return_string(pParse, "cipher_fips_status", fips_mode_status, P4_DYNAMIC);
- }
- } else
- if( sqlite3StrICmp(zLeft, "cipher_store_pass")==0 && zRight ) {
- if(ctx) {
- sqlcipher_codec_set_store_pass(ctx, sqlite3GetBoolean(zRight, 1));
- }
- } else
- if( sqlite3StrICmp(zLeft, "cipher_store_pass")==0 && !zRight ) {
- if(ctx){
- char *store_pass_value = sqlite3_mprintf("%d", sqlcipher_codec_get_store_pass(ctx));
- codec_vdbe_return_string(pParse, "cipher_store_pass", store_pass_value, P4_DYNAMIC);
- }
- }
- if( sqlite3StrICmp(zLeft, "cipher_profile")== 0 && zRight ){
- char *profile_status = sqlite3_mprintf("%d", sqlcipher_cipher_profile(db, zRight));
- codec_vdbe_return_string(pParse, "cipher_profile", profile_status, P4_DYNAMIC);
- } else
- if( sqlite3StrICmp(zLeft, "cipher_add_random")==0 && zRight ){
- if(ctx) {
- char *add_random_status = sqlite3_mprintf("%d", sqlcipher_codec_add_random(ctx, zRight, sqlite3Strlen30(zRight)));
- codec_vdbe_return_string(pParse, "cipher_add_random", add_random_status, P4_DYNAMIC);
- }
- } else
- if( sqlite3StrICmp(zLeft, "cipher_migrate")==0 && !zRight ){
- if(ctx){
- char *migrate_status = sqlite3_mprintf("%d", sqlcipher_codec_ctx_migrate(ctx));
- codec_vdbe_return_string(pParse, "cipher_migrate", migrate_status, P4_DYNAMIC);
- }
- } else
- if( sqlite3StrICmp(zLeft, "cipher_provider")==0 && !zRight ){
- if(ctx) { codec_vdbe_return_string(pParse, "cipher_provider",
- sqlcipher_codec_get_cipher_provider(ctx), P4_TRANSIENT);
- }
- } else
- if( sqlite3StrICmp(zLeft, "cipher_provider_version")==0 && !zRight){
- if(ctx) { codec_vdbe_return_string(pParse, "cipher_provider_version",
- sqlcipher_codec_get_provider_version(ctx), P4_TRANSIENT);
- }
- } else
- if( sqlite3StrICmp(zLeft, "cipher_version")==0 && !zRight ){
- codec_vdbe_return_string(pParse, "cipher_version", sqlcipher_version(), P4_DYNAMIC);
- }else
- if( sqlite3StrICmp(zLeft, "cipher")==0 ){
- if(ctx) {
- if( zRight ) {
- const char* message = "PRAGMA cipher is no longer supported.";
- codec_vdbe_return_string(pParse, "cipher", message, P4_TRANSIENT);
- sqlite3_log(SQLITE_WARNING, message);
- }else {
- codec_vdbe_return_string(pParse, "cipher", sqlcipher_codec_ctx_get_cipher(ctx), P4_TRANSIENT);
- }
- }
- }else
- if( sqlite3StrICmp(zLeft, "rekey_cipher")==0 && zRight ){
- const char* message = "PRAGMA rekey_cipher is no longer supported.";
- codec_vdbe_return_string(pParse, "rekey_cipher", message, P4_TRANSIENT);
- sqlite3_log(SQLITE_WARNING, message);
- }else
- if( sqlite3StrICmp(zLeft,"cipher_default_kdf_iter")==0 ){
- if( zRight ) {
- sqlcipher_set_default_kdf_iter(atoi(zRight)); /* change default KDF iterations */
- } else {
- char *kdf_iter = sqlite3_mprintf("%d", sqlcipher_get_default_kdf_iter());
- codec_vdbe_return_string(pParse, "cipher_default_kdf_iter", kdf_iter, P4_DYNAMIC);
- }
- }else
- if( sqlite3StrICmp(zLeft, "kdf_iter")==0 ){
- if(ctx) {
- if( zRight ) {
- sqlcipher_codec_ctx_set_kdf_iter(ctx, atoi(zRight)); /* change of RW PBKDF2 iteration */
- } else {
- char *kdf_iter = sqlite3_mprintf("%d", sqlcipher_codec_ctx_get_kdf_iter(ctx));
- codec_vdbe_return_string(pParse, "kdf_iter", kdf_iter, P4_DYNAMIC);
- }
- }
- }else
- if( sqlite3StrICmp(zLeft, "fast_kdf_iter")==0){
- if(ctx) {
- if( zRight ) {
- char *deprecation = "PRAGMA fast_kdf_iter is deprecated, please remove from use";
- sqlcipher_codec_ctx_set_fast_kdf_iter(ctx, atoi(zRight)); /* change of RW PBKDF2 iteration */
- codec_vdbe_return_string(pParse, "fast_kdf_iter", deprecation, P4_TRANSIENT);
- sqlite3_log(SQLITE_WARNING, deprecation);
- } else {
- char *fast_kdf_iter = sqlite3_mprintf("%d", sqlcipher_codec_ctx_get_fast_kdf_iter(ctx));
- codec_vdbe_return_string(pParse, "fast_kdf_iter", fast_kdf_iter, P4_DYNAMIC);
- }
- }
- }else
- if( sqlite3StrICmp(zLeft, "rekey_kdf_iter")==0 && zRight ){
- const char* message = "PRAGMA rekey_kdf_iter is no longer supported.";
- codec_vdbe_return_string(pParse, "rekey_kdf_iter", message, P4_TRANSIENT);
- sqlite3_log(SQLITE_WARNING, message);
- }else
- if( sqlite3StrICmp(zLeft,"cipher_page_size")==0 ){
- if(ctx) {
- if( zRight ) {
- int size = atoi(zRight);
- rc = sqlcipher_codec_ctx_set_pagesize(ctx, size);
- if(rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, rc);
- rc = codec_set_btree_to_codec_pagesize(db, pDb, ctx);
- if(rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, rc);
- } else {
- char * page_size = sqlite3_mprintf("%d", sqlcipher_codec_ctx_get_pagesize(ctx));
- codec_vdbe_return_string(pParse, "cipher_page_size", page_size, P4_DYNAMIC);
- }
- }
- }else
- if( sqlite3StrICmp(zLeft,"cipher_default_page_size")==0 ){
- if( zRight ) {
- sqlcipher_set_default_pagesize(atoi(zRight));
- } else {
- char *default_page_size = sqlite3_mprintf("%d", sqlcipher_get_default_pagesize());
- codec_vdbe_return_string(pParse, "cipher_default_page_size", default_page_size, P4_DYNAMIC);
- }
- }else
- if( sqlite3StrICmp(zLeft,"cipher_default_use_hmac")==0 ){
- if( zRight ) {
- sqlcipher_set_default_use_hmac(sqlite3GetBoolean(zRight,1));
- } else {
- char *default_use_hmac = sqlite3_mprintf("%d", sqlcipher_get_default_use_hmac());
- codec_vdbe_return_string(pParse, "cipher_default_use_hmac", default_use_hmac, P4_DYNAMIC);
- }
- }else
- if( sqlite3StrICmp(zLeft,"cipher_use_hmac")==0 ){
- if(ctx) {
- if( zRight ) {
- rc = sqlcipher_codec_ctx_set_use_hmac(ctx, sqlite3GetBoolean(zRight,1));
- if(rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, rc);
- /* since the use of hmac has changed, the page size may also change */
- rc = codec_set_btree_to_codec_pagesize(db, pDb, ctx);
- if(rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, rc);
- } else {
- char *hmac_flag = sqlite3_mprintf("%d", sqlcipher_codec_ctx_get_use_hmac(ctx));
- codec_vdbe_return_string(pParse, "cipher_use_hmac", hmac_flag, P4_DYNAMIC);
- }
- }
- }else
- if( sqlite3StrICmp(zLeft,"cipher_hmac_pgno")==0 ){
- if(ctx) {
- if(zRight) {
- char *deprecation = "PRAGMA cipher_hmac_pgno is deprecated, please remove from use";
- /* clear both pgno endian flags */
- if(sqlite3StrICmp(zRight, "le") == 0) {
- sqlcipher_codec_ctx_unset_flag(ctx, CIPHER_FLAG_BE_PGNO);
- sqlcipher_codec_ctx_set_flag(ctx, CIPHER_FLAG_LE_PGNO);
- } else if(sqlite3StrICmp(zRight, "be") == 0) {
- sqlcipher_codec_ctx_unset_flag(ctx, CIPHER_FLAG_LE_PGNO);
- sqlcipher_codec_ctx_set_flag(ctx, CIPHER_FLAG_BE_PGNO);
- } else if(sqlite3StrICmp(zRight, "native") == 0) {
- sqlcipher_codec_ctx_unset_flag(ctx, CIPHER_FLAG_LE_PGNO);
- sqlcipher_codec_ctx_unset_flag(ctx, CIPHER_FLAG_BE_PGNO);
- }
- codec_vdbe_return_string(pParse, "cipher_hmac_pgno", deprecation, P4_TRANSIENT);
- sqlite3_log(SQLITE_WARNING, deprecation);
-
- } else {
- if(sqlcipher_codec_ctx_get_flag(ctx, CIPHER_FLAG_LE_PGNO)) {
- codec_vdbe_return_string(pParse, "cipher_hmac_pgno", "le", P4_TRANSIENT);
- } else if(sqlcipher_codec_ctx_get_flag(ctx, CIPHER_FLAG_BE_PGNO)) {
- codec_vdbe_return_string(pParse, "cipher_hmac_pgno", "be", P4_TRANSIENT);
- } else {
- codec_vdbe_return_string(pParse, "cipher_hmac_pgno", "native", P4_TRANSIENT);
- }
- }
- }
- }else
- if( sqlite3StrICmp(zLeft,"cipher_hmac_salt_mask")==0 ){
- if(ctx) {
- if(zRight) {
- char *deprecation = "PRAGMA cipher_hmac_salt_mask is deprecated, please remove from use";
- if (sqlite3StrNICmp(zRight ,"x'", 2) == 0 && sqlite3Strlen30(zRight) == 5) {
- unsigned char mask = 0;
- const unsigned char *hex = (const unsigned char *)zRight+2;
- cipher_hex2bin(hex,2,&mask);
- sqlcipher_set_hmac_salt_mask(mask);
- }
- codec_vdbe_return_string(pParse, "cipher_hmac_salt_mask", deprecation, P4_TRANSIENT);
- sqlite3_log(SQLITE_WARNING, deprecation);
- } else {
- char *hmac_salt_mask = sqlite3_mprintf("%02x", sqlcipher_get_hmac_salt_mask());
- codec_vdbe_return_string(pParse, "cipher_hmac_salt_mask", hmac_salt_mask, P4_DYNAMIC);
- }
- }
- }else
- if( sqlite3StrICmp(zLeft,"cipher_plaintext_header_size")==0 ){
- if(ctx) {
- if( zRight ) {
- int size = atoi(zRight);
- if((rc = sqlcipher_codec_ctx_set_plaintext_header_size(ctx, size)) != SQLITE_OK)
- sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- } else {
- char *size = sqlite3_mprintf("%d", sqlcipher_codec_ctx_get_plaintext_header_size(ctx));
- codec_vdbe_return_string(pParse, "cipher_plaintext_header_size", size, P4_DYNAMIC);
- }
- }
- }else
- if( sqlite3StrICmp(zLeft,"cipher_default_plaintext_header_size")==0 ){
- if( zRight ) {
- sqlcipher_set_default_plaintext_header_size(atoi(zRight));
- } else {
- char *size = sqlite3_mprintf("%d", sqlcipher_get_default_plaintext_header_size());
- codec_vdbe_return_string(pParse, "cipher_default_plaintext_header_size", size, P4_DYNAMIC);
- sqlite3_free(size);
- }
- }else
- if( sqlite3StrICmp(zLeft,"cipher_salt")==0 ){
- if(ctx) {
- if(zRight) {
- if (sqlite3StrNICmp(zRight ,"x'", 2) == 0 && sqlite3Strlen30(zRight) == (FILE_HEADER_SZ*2)+3) {
- unsigned char *salt = (unsigned char*) sqlite3_malloc(FILE_HEADER_SZ);
- const unsigned char *hex = (const unsigned char *)zRight+2;
- cipher_hex2bin(hex,FILE_HEADER_SZ*2,salt);
- sqlcipher_codec_ctx_set_kdf_salt(ctx, salt, FILE_HEADER_SZ);
- sqlite3_free(salt);
- }
- } else {
- void *salt;
- char *hexsalt = (char*) sqlite3_malloc((FILE_HEADER_SZ*2)+1);
- if((rc = sqlcipher_codec_ctx_get_kdf_salt(ctx, &salt)) == SQLITE_OK) {
- cipher_bin2hex(salt, FILE_HEADER_SZ, hexsalt);
- codec_vdbe_return_string(pParse, "cipher_salt", hexsalt, P4_DYNAMIC);
- } else {
- sqlite3_free(hexsalt);
- sqlcipher_codec_ctx_set_error(ctx, rc);
- }
- }
- }
- }else
- if( sqlite3StrICmp(zLeft,"cipher_hmac_algorithm")==0 ){
- if(ctx) {
- if(zRight) {
- rc = SQLITE_ERROR;
- if(sqlite3StrICmp(zRight, SQLCIPHER_HMAC_SHA1_LABEL) == 0) {
- rc = sqlcipher_codec_ctx_set_hmac_algorithm(ctx, SQLCIPHER_HMAC_SHA1);
- } else if(sqlite3StrICmp(zRight, SQLCIPHER_HMAC_SHA256_LABEL) == 0) {
- rc = sqlcipher_codec_ctx_set_hmac_algorithm(ctx, SQLCIPHER_HMAC_SHA256);
- } else if(sqlite3StrICmp(zRight, SQLCIPHER_HMAC_SHA512_LABEL) == 0) {
- rc = sqlcipher_codec_ctx_set_hmac_algorithm(ctx, SQLCIPHER_HMAC_SHA512);
- }
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- rc = codec_set_btree_to_codec_pagesize(db, pDb, ctx);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- } else {
- int algorithm = sqlcipher_codec_ctx_get_hmac_algorithm(ctx);
- if(algorithm == SQLCIPHER_HMAC_SHA1) {
- codec_vdbe_return_string(pParse, "cipher_hmac_algorithm", SQLCIPHER_HMAC_SHA1_LABEL, P4_TRANSIENT);
- } else if(algorithm == SQLCIPHER_HMAC_SHA256) {
- codec_vdbe_return_string(pParse, "cipher_hmac_algorithm", SQLCIPHER_HMAC_SHA256_LABEL, P4_TRANSIENT);
- } else if(algorithm == SQLCIPHER_HMAC_SHA512) {
- codec_vdbe_return_string(pParse, "cipher_hmac_algorithm", SQLCIPHER_HMAC_SHA512_LABEL, P4_TRANSIENT);
- }
- }
- }
- }else
- if( sqlite3StrICmp(zLeft,"cipher_default_hmac_algorithm")==0 ){
- if(zRight) {
- rc = SQLITE_ERROR;
- if(sqlite3StrICmp(zRight, SQLCIPHER_HMAC_SHA1_LABEL) == 0) {
- rc = sqlcipher_set_default_hmac_algorithm(SQLCIPHER_HMAC_SHA1);
- } else if(sqlite3StrICmp(zRight, SQLCIPHER_HMAC_SHA256_LABEL) == 0) {
- rc = sqlcipher_set_default_hmac_algorithm(SQLCIPHER_HMAC_SHA256);
- } else if(sqlite3StrICmp(zRight, SQLCIPHER_HMAC_SHA512_LABEL) == 0) {
- rc = sqlcipher_set_default_hmac_algorithm(SQLCIPHER_HMAC_SHA512);
- }
- } else {
- int algorithm = sqlcipher_get_default_hmac_algorithm();
- if(algorithm == SQLCIPHER_HMAC_SHA1) {
- codec_vdbe_return_string(pParse, "cipher_default_hmac_algorithm", SQLCIPHER_HMAC_SHA1_LABEL, P4_TRANSIENT);
- } else if(algorithm == SQLCIPHER_HMAC_SHA256) {
- codec_vdbe_return_string(pParse, "cipher_default_hmac_algorithm", SQLCIPHER_HMAC_SHA256_LABEL, P4_TRANSIENT);
- } else if(algorithm == SQLCIPHER_HMAC_SHA512) {
- codec_vdbe_return_string(pParse, "cipher_default_hmac_algorithm", SQLCIPHER_HMAC_SHA512_LABEL, P4_TRANSIENT);
- }
- }
- }else
- if( sqlite3StrICmp(zLeft,"cipher_kdf_algorithm")==0 ){
- if(ctx) {
- if(zRight) {
- rc = SQLITE_ERROR;
- if(sqlite3StrICmp(zRight, SQLCIPHER_PBKDF2_HMAC_SHA1_LABEL) == 0) {
- rc = sqlcipher_codec_ctx_set_kdf_algorithm(ctx, SQLCIPHER_PBKDF2_HMAC_SHA1);
- } else if(sqlite3StrICmp(zRight, SQLCIPHER_PBKDF2_HMAC_SHA256_LABEL) == 0) {
- rc = sqlcipher_codec_ctx_set_kdf_algorithm(ctx, SQLCIPHER_PBKDF2_HMAC_SHA256);
- } else if(sqlite3StrICmp(zRight, SQLCIPHER_PBKDF2_HMAC_SHA512_LABEL) == 0) {
- rc = sqlcipher_codec_ctx_set_kdf_algorithm(ctx, SQLCIPHER_PBKDF2_HMAC_SHA512);
- }
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- } else {
- int algorithm = sqlcipher_codec_ctx_get_kdf_algorithm(ctx);
- if(algorithm == SQLCIPHER_PBKDF2_HMAC_SHA1) {
- codec_vdbe_return_string(pParse, "cipher_kdf_algorithm", SQLCIPHER_PBKDF2_HMAC_SHA1_LABEL, P4_TRANSIENT);
- } else if(algorithm == SQLCIPHER_PBKDF2_HMAC_SHA256) {
- codec_vdbe_return_string(pParse, "cipher_kdf_algorithm", SQLCIPHER_PBKDF2_HMAC_SHA256_LABEL, P4_TRANSIENT);
- } else if(algorithm == SQLCIPHER_PBKDF2_HMAC_SHA512) {
- codec_vdbe_return_string(pParse, "cipher_kdf_algorithm", SQLCIPHER_PBKDF2_HMAC_SHA512_LABEL, P4_TRANSIENT);
- }
- }
- }
- }else
- if( sqlite3StrICmp(zLeft,"cipher_default_kdf_algorithm")==0 ){
- if(zRight) {
- rc = SQLITE_ERROR;
- if(sqlite3StrICmp(zRight, SQLCIPHER_PBKDF2_HMAC_SHA1_LABEL) == 0) {
- rc = sqlcipher_set_default_kdf_algorithm(SQLCIPHER_PBKDF2_HMAC_SHA1);
- } else if(sqlite3StrICmp(zRight, SQLCIPHER_PBKDF2_HMAC_SHA256_LABEL) == 0) {
- rc = sqlcipher_set_default_kdf_algorithm(SQLCIPHER_PBKDF2_HMAC_SHA256);
- } else if(sqlite3StrICmp(zRight, SQLCIPHER_PBKDF2_HMAC_SHA512_LABEL) == 0) {
- rc = sqlcipher_set_default_kdf_algorithm(SQLCIPHER_PBKDF2_HMAC_SHA512);
- }
- } else {
- int algorithm = sqlcipher_get_default_kdf_algorithm();
- if(algorithm == SQLCIPHER_PBKDF2_HMAC_SHA1) {
- codec_vdbe_return_string(pParse, "cipher_default_kdf_algorithm", SQLCIPHER_PBKDF2_HMAC_SHA1_LABEL, P4_TRANSIENT);
- } else if(algorithm == SQLCIPHER_PBKDF2_HMAC_SHA256) {
- codec_vdbe_return_string(pParse, "cipher_default_kdf_algorithm", SQLCIPHER_PBKDF2_HMAC_SHA256_LABEL, P4_TRANSIENT);
- } else if(algorithm == SQLCIPHER_PBKDF2_HMAC_SHA512) {
- codec_vdbe_return_string(pParse, "cipher_default_kdf_algorithm", SQLCIPHER_PBKDF2_HMAC_SHA512_LABEL, P4_TRANSIENT);
- }
- }
- }else
- if( sqlite3StrICmp(zLeft,"cipher_compatibility")==0 ){
- if(ctx) {
- if(zRight) {
- int version = atoi(zRight);
-
- switch(version) {
- case 1:
- rc = sqlcipher_codec_ctx_set_pagesize(ctx, 1024);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- rc = sqlcipher_codec_ctx_set_hmac_algorithm(ctx, SQLCIPHER_HMAC_SHA1);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- rc = sqlcipher_codec_ctx_set_kdf_algorithm(ctx, SQLCIPHER_PBKDF2_HMAC_SHA1);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- rc = sqlcipher_codec_ctx_set_kdf_iter(ctx, 4000);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- rc = sqlcipher_codec_ctx_set_use_hmac(ctx, 0);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- break;
-
- case 2:
- rc = sqlcipher_codec_ctx_set_pagesize(ctx, 1024);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- rc = sqlcipher_codec_ctx_set_hmac_algorithm(ctx, SQLCIPHER_HMAC_SHA1);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- rc = sqlcipher_codec_ctx_set_kdf_algorithm(ctx, SQLCIPHER_PBKDF2_HMAC_SHA1);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- rc = sqlcipher_codec_ctx_set_kdf_iter(ctx, 4000);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- rc = sqlcipher_codec_ctx_set_use_hmac(ctx, 1);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- break;
-
- case 3:
- rc = sqlcipher_codec_ctx_set_pagesize(ctx, 1024);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- rc = sqlcipher_codec_ctx_set_hmac_algorithm(ctx, SQLCIPHER_HMAC_SHA1);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- rc = sqlcipher_codec_ctx_set_kdf_algorithm(ctx, SQLCIPHER_PBKDF2_HMAC_SHA1);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- rc = sqlcipher_codec_ctx_set_kdf_iter(ctx, 64000);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- rc = sqlcipher_codec_ctx_set_use_hmac(ctx, 1);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- break;
-
- default:
- rc = sqlcipher_codec_ctx_set_pagesize(ctx, 4096);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- rc = sqlcipher_codec_ctx_set_hmac_algorithm(ctx, SQLCIPHER_HMAC_SHA512);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- rc = sqlcipher_codec_ctx_set_kdf_algorithm(ctx, SQLCIPHER_PBKDF2_HMAC_SHA512);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- rc = sqlcipher_codec_ctx_set_kdf_iter(ctx, 256000);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- rc = sqlcipher_codec_ctx_set_use_hmac(ctx, 1);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- break;
- }
-
- rc = codec_set_btree_to_codec_pagesize(db, pDb, ctx);
- if (rc != SQLITE_OK) sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR);
- }
- }
- }else
- if( sqlite3StrICmp(zLeft,"cipher_default_compatibility")==0 ){
- if(zRight) {
- int version = atoi(zRight);
- switch(version) {
- case 1:
- sqlcipher_set_default_pagesize(1024);
- sqlcipher_set_default_hmac_algorithm(SQLCIPHER_HMAC_SHA1);
- sqlcipher_set_default_kdf_algorithm(SQLCIPHER_PBKDF2_HMAC_SHA1);
- sqlcipher_set_default_kdf_iter(4000);
- sqlcipher_set_default_use_hmac(0);
- break;
-
- case 2:
- sqlcipher_set_default_pagesize(1024);
- sqlcipher_set_default_hmac_algorithm(SQLCIPHER_HMAC_SHA1);
- sqlcipher_set_default_kdf_algorithm(SQLCIPHER_PBKDF2_HMAC_SHA1);
- sqlcipher_set_default_kdf_iter(4000);
- sqlcipher_set_default_use_hmac(1);
- break;
-
- case 3:
- sqlcipher_set_default_pagesize(1024);
- sqlcipher_set_default_hmac_algorithm(SQLCIPHER_HMAC_SHA1);
- sqlcipher_set_default_kdf_algorithm(SQLCIPHER_PBKDF2_HMAC_SHA1);
- sqlcipher_set_default_kdf_iter(64000);
- sqlcipher_set_default_use_hmac(1);
- break;
-
- default:
- sqlcipher_set_default_pagesize(4096);
- sqlcipher_set_default_hmac_algorithm(SQLCIPHER_HMAC_SHA512);
- sqlcipher_set_default_kdf_algorithm(SQLCIPHER_PBKDF2_HMAC_SHA512);
- sqlcipher_set_default_kdf_iter(256000);
- sqlcipher_set_default_use_hmac(1);
- break;
- }
- }
- }else
- if( sqlite3StrICmp(zLeft,"cipher_memory_security")==0 ){
- if( zRight ) {
- sqlcipher_set_mem_security(sqlite3GetBoolean(zRight,1));
- } else {
- char *on = sqlite3_mprintf("%d", sqlcipher_get_mem_security());
- codec_vdbe_return_string(pParse, "cipher_memory_security", on, P4_DYNAMIC);
- }
- }else
- if( sqlite3StrICmp(zLeft,"cipher_settings")==0 ){
- if(ctx) {
- int algorithm;
- char *pragma;
-
- pragma = sqlite3_mprintf("PRAGMA kdf_iter = %d;", sqlcipher_codec_ctx_get_kdf_iter(ctx));
- codec_vdbe_return_string(pParse, "pragma", pragma, P4_DYNAMIC);
-
- pragma = sqlite3_mprintf("PRAGMA cipher_page_size = %d;", sqlcipher_codec_ctx_get_pagesize(ctx));
- codec_vdbe_return_string(pParse, "pragma", pragma, P4_DYNAMIC);
-
- pragma = sqlite3_mprintf("PRAGMA cipher_use_hmac = %d;", sqlcipher_codec_ctx_get_use_hmac(ctx));
- codec_vdbe_return_string(pParse, "pragma", pragma, P4_DYNAMIC);
-
- pragma = sqlite3_mprintf("PRAGMA cipher_plaintext_header_size = %d;", sqlcipher_codec_ctx_get_plaintext_header_size(ctx));
- codec_vdbe_return_string(pParse, "pragma", pragma, P4_DYNAMIC);
-
- algorithm = sqlcipher_codec_ctx_get_hmac_algorithm(ctx);
- pragma = NULL;
- if(algorithm == SQLCIPHER_HMAC_SHA1) {
- pragma = sqlite3_mprintf("PRAGMA cipher_hmac_algorithm = %s;", SQLCIPHER_HMAC_SHA1_LABEL);
- } else if(algorithm == SQLCIPHER_HMAC_SHA256) {
- pragma = sqlite3_mprintf("PRAGMA cipher_hmac_algorithm = %s;", SQLCIPHER_HMAC_SHA256_LABEL);
- } else if(algorithm == SQLCIPHER_HMAC_SHA512) {
- pragma = sqlite3_mprintf("PRAGMA cipher_hmac_algorithm = %s;", SQLCIPHER_HMAC_SHA512_LABEL);
- }
- codec_vdbe_return_string(pParse, "pragma", pragma, P4_DYNAMIC);
-
- algorithm = sqlcipher_codec_ctx_get_kdf_algorithm(ctx);
- pragma = NULL;
- if(algorithm == SQLCIPHER_PBKDF2_HMAC_SHA1) {
- pragma = sqlite3_mprintf("PRAGMA cipher_kdf_algorithm = %s;", SQLCIPHER_PBKDF2_HMAC_SHA1_LABEL);
- } else if(algorithm == SQLCIPHER_PBKDF2_HMAC_SHA256) {
- pragma = sqlite3_mprintf("PRAGMA cipher_kdf_algorithm = %s;", SQLCIPHER_PBKDF2_HMAC_SHA256_LABEL);
- } else if(algorithm == SQLCIPHER_PBKDF2_HMAC_SHA512) {
- pragma = sqlite3_mprintf("PRAGMA cipher_kdf_algorithm = %s;", SQLCIPHER_PBKDF2_HMAC_SHA512_LABEL);
- }
- codec_vdbe_return_string(pParse, "pragma", pragma, P4_DYNAMIC);
-
- }
- }else
- if( sqlite3StrICmp(zLeft,"cipher_default_settings")==0 ){
- int algorithm;
- char *pragma;
-
- pragma = sqlite3_mprintf("PRAGMA cipher_default_kdf_iter = %d;", sqlcipher_get_default_kdf_iter());
- codec_vdbe_return_string(pParse, "pragma", pragma, P4_DYNAMIC);
-
- pragma = sqlite3_mprintf("PRAGMA cipher_default_page_size = %d;", sqlcipher_get_default_pagesize());
- codec_vdbe_return_string(pParse, "pragma", pragma, P4_DYNAMIC);
-
- pragma = sqlite3_mprintf("PRAGMA cipher_default_use_hmac = %d;", sqlcipher_get_default_use_hmac());
- codec_vdbe_return_string(pParse, "pragma", pragma, P4_DYNAMIC);
-
- pragma = sqlite3_mprintf("PRAGMA cipher_default_plaintext_header_size = %d;", sqlcipher_get_default_plaintext_header_size());
- codec_vdbe_return_string(pParse, "pragma", pragma, P4_DYNAMIC);
-
- algorithm = sqlcipher_get_default_hmac_algorithm();
- pragma = NULL;
- if(algorithm == SQLCIPHER_HMAC_SHA1) {
- pragma = sqlite3_mprintf("PRAGMA cipher_default_hmac_algorithm = %s;", SQLCIPHER_HMAC_SHA1_LABEL);
- } else if(algorithm == SQLCIPHER_HMAC_SHA256) {
- pragma = sqlite3_mprintf("PRAGMA cipher_default_hmac_algorithm = %s;", SQLCIPHER_HMAC_SHA256_LABEL);
- } else if(algorithm == SQLCIPHER_HMAC_SHA512) {
- pragma = sqlite3_mprintf("PRAGMA cipher_default_hmac_algorithm = %s;", SQLCIPHER_HMAC_SHA512_LABEL);
- }
- codec_vdbe_return_string(pParse, "pragma", pragma, P4_DYNAMIC);
-
- algorithm = sqlcipher_get_default_kdf_algorithm();
- pragma = NULL;
- if(algorithm == SQLCIPHER_PBKDF2_HMAC_SHA1) {
- pragma = sqlite3_mprintf("PRAGMA cipher_default_kdf_algorithm = %s;", SQLCIPHER_PBKDF2_HMAC_SHA1_LABEL);
- } else if(algorithm == SQLCIPHER_PBKDF2_HMAC_SHA256) {
- pragma = sqlite3_mprintf("PRAGMA cipher_default_kdf_algorithm = %s;", SQLCIPHER_PBKDF2_HMAC_SHA256_LABEL);
- } else if(algorithm == SQLCIPHER_PBKDF2_HMAC_SHA512) {
- pragma = sqlite3_mprintf("PRAGMA cipher_default_kdf_algorithm = %s;", SQLCIPHER_PBKDF2_HMAC_SHA512_LABEL);
- }
- codec_vdbe_return_string(pParse, "pragma", pragma, P4_DYNAMIC);
- }else
- if( sqlite3StrICmp(zLeft,"cipher_integrity_check")==0 ){
- if(ctx) {
- sqlcipher_codec_ctx_integrity_check(ctx, pParse, "cipher_integrity_check");
- }
- }else {
- return 0;
- }
- return 1;
-}
-
-/* these constants are used internally within SQLite's pager.c to differentiate between
- operations on the main database or journal pages. This is important in the context
- of a rekey operations, where the journal must be written using the original key
- material (to allow a transactional rollback), while the new database pages are being
- written with the new key material*/
-#define CODEC_READ_OP 3
-#define CODEC_WRITE_OP 6
-#define CODEC_JOURNAL_OP 7
-
-/*
- * sqlite3Codec can be called in multiple modes.
- * encrypt mode - expected to return a pointer to the
- * encrypted data without altering pData.
- * decrypt mode - expected to return a pointer to pData, with
- * the data decrypted in the input buffer
- */
-static void* sqlite3Codec(void *iCtx, void *data, Pgno pgno, int mode) {
- codec_ctx *ctx = (codec_ctx *) iCtx;
- int offset = 0, rc = 0;
- int page_sz = sqlcipher_codec_ctx_get_pagesize(ctx);
- unsigned char *pData = (unsigned char *) data;
- void *buffer = sqlcipher_codec_ctx_get_data(ctx);
- int plaintext_header_sz = sqlcipher_codec_ctx_get_plaintext_header_size(ctx);
- int cctx = CIPHER_READ_CTX;
-
- CODEC_TRACE("sqlite3Codec: entered pgno=%d, mode=%d, page_sz=%d\n", pgno, mode, page_sz);
-
-#ifdef SQLCIPHER_EXT
- if(sqlcipher_license_check(ctx) != SQLITE_OK) return NULL;
-#endif
-
- /* call to derive keys if not present yet */
- if((rc = sqlcipher_codec_key_derive(ctx)) != SQLITE_OK) {
- sqlcipher_codec_ctx_set_error(ctx, rc);
- return NULL;
- }
-
- if(pgno == 1) /* adjust starting pointers in data page for header offset on first page*/
- offset = plaintext_header_sz ? plaintext_header_sz : FILE_HEADER_SZ;
-
-
- CODEC_TRACE("sqlite3Codec: switch mode=%d offset=%d\n", mode, offset);
- switch(mode) {
- case CODEC_READ_OP: /* decrypt */
- if(pgno == 1) /* copy initial part of file header or SQLite magic to buffer */
- memcpy(buffer, plaintext_header_sz ? pData : (void *) SQLITE_FILE_HEADER, offset);
-
- rc = sqlcipher_page_cipher(ctx, cctx, pgno, CIPHER_DECRYPT, page_sz - offset, pData + offset, (unsigned char*)buffer + offset);
- if(rc != SQLITE_OK) { /* clear results of failed cipher operation and set error */
- sqlcipher_memset((unsigned char*) buffer+offset, 0, page_sz-offset);
- sqlcipher_codec_ctx_set_error(ctx, rc);
- }
- memcpy(pData, buffer, page_sz); /* copy buffer data back to pData and return */
- return pData;
- break;
-
- case CODEC_WRITE_OP: /* encrypt database page, operate on write context and fall through to case 7, so the write context is used*/
- cctx = CIPHER_WRITE_CTX;
-
- case CODEC_JOURNAL_OP: /* encrypt journal page, operate on read context use to get the original page data from the database */
- if(pgno == 1) { /* copy initial part of file header or salt to buffer */
- void *kdf_salt = NULL;
- /* retrieve the kdf salt */
- if((rc = sqlcipher_codec_ctx_get_kdf_salt(ctx, &kdf_salt)) != SQLITE_OK) {
- sqlcipher_codec_ctx_set_error(ctx, rc);
- return NULL;
- }
- memcpy(buffer, plaintext_header_sz ? pData : kdf_salt, offset);
- }
- rc = sqlcipher_page_cipher(ctx, cctx, pgno, CIPHER_ENCRYPT, page_sz - offset, pData + offset, (unsigned char*)buffer + offset);
- if(rc != SQLITE_OK) { /* clear results of failed cipher operation and set error */
- sqlcipher_memset((unsigned char*)buffer+offset, 0, page_sz-offset);
- sqlcipher_codec_ctx_set_error(ctx, rc);
- }
- return buffer; /* return persistent buffer data, pData remains intact */
- break;
-
- default:
- sqlcipher_codec_ctx_set_error(ctx, SQLITE_ERROR); /* unsupported mode, set error */
- return pData;
- break;
- }
-}
-
-static void sqlite3FreeCodecArg(void *pCodecArg) {
- codec_ctx *ctx = (codec_ctx *) pCodecArg;
- if(pCodecArg == NULL) return;
- sqlcipher_codec_ctx_free(&ctx); /* wipe and free allocated memory for the context */
- sqlcipher_deactivate(); /* cleanup related structures, OpenSSL etc, when codec is detatched */
-}
-
-SQLITE_PRIVATE int sqlite3CodecAttach(sqlite3* db, int nDb, const void *zKey, int nKey) {
- struct Db *pDb = &db->aDb[nDb];
-
- CODEC_TRACE("sqlite3CodecAttach: entered db=%p, nDb=%d zKey=%s, nKey=%d\n", db, nDb, (char *)zKey, nKey);
-
-
- if(nKey && zKey && pDb->pBt) {
- int rc;
- Pager *pPager = pDb->pBt->pBt->pPager;
- sqlite3_file *fd;
- codec_ctx *ctx;
-
- /* check if the sqlite3_file is open, and if not force handle to NULL */
- if((fd = sqlite3PagerFile(pPager))->pMethods == 0) fd = NULL;
-
- CODEC_TRACE("sqlite3CodecAttach: calling sqlcipher_activate()\n");
- sqlcipher_activate(); /* perform internal initialization for sqlcipher */
-
- CODEC_TRACE_MUTEX("sqlite3CodecAttach: entering database mutex %p\n", db->mutex);
- sqlite3_mutex_enter(db->mutex);
- CODEC_TRACE_MUTEX("sqlite3CodecAttach: entered database mutex %p\n", db->mutex);
-
-#ifdef SQLCIPHER_EXT
- if((rc = sqlite3_set_authorizer(db, sqlcipher_license_authorizer, db)) != SQLITE_OK) {
- sqlite3_mutex_leave(db->mutex);
- return rc;
- }
-#endif
-
- /* point the internal codec argument against the contet to be prepared */
- CODEC_TRACE("sqlite3CodecAttach: calling sqlcipher_codec_ctx_init()\n");
- rc = sqlcipher_codec_ctx_init(&ctx, pDb, pDb->pBt->pBt->pPager, zKey, nKey);
-
- if(rc != SQLITE_OK) {
- /* initialization failed, do not attach potentially corrupted context */
- CODEC_TRACE("sqlite3CodecAttach: context initialization failed with rc=%d\n", rc);
- /* force an error at the pager level, such that even the upstream caller ignores the return code
- the pager will be in an error state and will process no further operations */
- sqlite3pager_error(pPager, rc);
- pDb->pBt->pBt->db->errCode = rc;
- CODEC_TRACE_MUTEX("sqlite3CodecAttach: leaving database mutex %p (early return on rc=%d)\n", db->mutex, rc);
- sqlite3_mutex_leave(db->mutex);
- CODEC_TRACE_MUTEX("sqlite3CodecAttach: left database mutex %p (early return on rc=%d)\n", db->mutex, rc);
- return rc;
- }
-
- CODEC_TRACE("sqlite3CodecAttach: calling sqlite3PagerSetCodec()\n");
- sqlite3PagerSetCodec(sqlite3BtreePager(pDb->pBt), sqlite3Codec, NULL, sqlite3FreeCodecArg, (void *) ctx);
-
- CODEC_TRACE("sqlite3CodecAttach: calling codec_set_btree_to_codec_pagesize()\n");
- codec_set_btree_to_codec_pagesize(db, pDb, ctx);
-
- /* force secure delete. This has the benefit of wiping internal data when deleted
- and also ensures that all pages are written to disk (i.e. not skipped by
- sqlite3PagerDontWrite optimizations) */
- CODEC_TRACE("sqlite3CodecAttach: calling sqlite3BtreeSecureDelete()\n");
- sqlite3BtreeSecureDelete(pDb->pBt, 1);
-
- /* if fd is null, then this is an in-memory database and
- we dont' want to overwrite the AutoVacuum settings
- if not null, then set to the default */
- if(fd != NULL) {
- CODEC_TRACE("sqlite3CodecAttach: calling sqlite3BtreeSetAutoVacuum()\n");
- sqlite3BtreeSetAutoVacuum(pDb->pBt, SQLITE_DEFAULT_AUTOVACUUM);
- }
- CODEC_TRACE_MUTEX("sqlite3CodecAttach: leaving database mutex %p\n", db->mutex);
- sqlite3_mutex_leave(db->mutex);
- CODEC_TRACE_MUTEX("sqlite3CodecAttach: left database mutex %p\n", db->mutex);
- }
- return SQLITE_OK;
-}
-
-int sqlcipher_find_db_index(sqlite3 *db, const char *zDb) {
- int db_index;
- if(zDb == NULL){
- return 0;
- }
- for(db_index = 0; db_index < db->nDb; db_index++) {
- struct Db *pDb = &db->aDb[db_index];
- if(strcmp(pDb->zDbSName, zDb) == 0) {
- return db_index;
- }
- }
- return 0;
-}
-
-SQLITE_API void sqlite3_activate_see(const char* in) {
- /* do nothing, security enhancements are always active */
-}
-
-SQLITE_API int sqlite3_key(sqlite3 *db, const void *pKey, int nKey) {
- CODEC_TRACE("sqlite3_key entered: db=%p pKey=%s nKey=%d\n", db, (char *)pKey, nKey);
- return sqlite3_key_v2(db, "main", pKey, nKey);
-}
-
-SQLITE_API int sqlite3_key_v2(sqlite3 *db, const char *zDb, const void *pKey, int nKey) {
- CODEC_TRACE("sqlite3_key_v2: entered db=%p zDb=%s pKey=%s nKey=%d\n", db, zDb, (char *)pKey, nKey);
- /* attach key if db and pKey are not null and nKey is > 0 */
- if(db && pKey && nKey) {
- int db_index = sqlcipher_find_db_index(db, zDb);
- return sqlite3CodecAttach(db, db_index, pKey, nKey);
- }
- return SQLITE_ERROR;
-}
-
-SQLITE_API int sqlite3_rekey(sqlite3 *db, const void *pKey, int nKey) {
- CODEC_TRACE("sqlite3_rekey entered: db=%p pKey=%s nKey=%d\n", db, (char *)pKey, nKey);
- return sqlite3_rekey_v2(db, "main", pKey, nKey);
-}
-
-/* sqlite3_rekey_v2
-** Given a database, this will reencrypt the database using a new key.
-** There is only one possible modes of operation - to encrypt a database
-** that is already encrpyted. If the database is not already encrypted
-** this should do nothing
-** The proposed logic for this function follows:
-** 1. Determine if the database is already encryptped
-** 2. If there is NOT already a key present do nothing
-** 3. If there is a key present, re-encrypt the database with the new key
-*/
-SQLITE_API int sqlite3_rekey_v2(sqlite3 *db, const char *zDb, const void *pKey, int nKey) {
- CODEC_TRACE("sqlite3_rekey_v2: entered db=%p zDb=%s pKey=%s, nKey=%d\n", db, zDb, (char *)pKey, nKey);
- if(db && pKey && nKey) {
- int db_index = sqlcipher_find_db_index(db, zDb);
- struct Db *pDb = &db->aDb[db_index];
- CODEC_TRACE("sqlite3_rekey_v2: database pDb=%p db_index:%d\n", pDb, db_index);
- if(pDb->pBt) {
- codec_ctx *ctx;
- int rc, page_count;
- Pgno pgno;
- PgHdr *page;
- Pager *pPager = pDb->pBt->pBt->pPager;
-
- ctx = (codec_ctx*) sqlite3PagerGetCodec(pDb->pBt->pBt->pPager);
-
- if(ctx == NULL) {
- /* there was no codec attached to this database, so this should do nothing! */
- CODEC_TRACE("sqlite3_rekey_v2: no codec attached to db, exiting\n");
- return SQLITE_OK;
- }
-
- CODEC_TRACE_MUTEX("sqlite3_rekey_v2: entering database mutex %p\n", db->mutex);
- sqlite3_mutex_enter(db->mutex);
- CODEC_TRACE_MUTEX("sqlite3_rekey_v2: entered database mutex %p\n", db->mutex);
-
- codec_set_pass_key(db, db_index, pKey, nKey, CIPHER_WRITE_CTX);
-
- /* do stuff here to rewrite the database
- ** 1. Create a transaction on the database
- ** 2. Iterate through each page, reading it and then writing it.
- ** 3. If that goes ok then commit and put ctx->rekey into ctx->key
- ** note: don't deallocate rekey since it may be used in a subsequent iteration
- */
- rc = sqlite3BtreeBeginTrans(pDb->pBt, 1, 0); /* begin write transaction */
- sqlite3PagerPagecount(pPager, &page_count);
- for(pgno = 1; rc == SQLITE_OK && pgno <= (unsigned int)page_count; pgno++) { /* pgno's start at 1 see pager.c:pagerAcquire */
- if(!sqlite3pager_is_mj_pgno(pPager, pgno)) { /* skip this page (see pager.c:pagerAcquire for reasoning) */
- rc = sqlite3PagerGet(pPager, pgno, &page, 0);
- if(rc == SQLITE_OK) { /* write page see pager_incr_changecounter for example */
- rc = sqlite3PagerWrite(page);
- if(rc == SQLITE_OK) {
- sqlite3PagerUnref(page);
- } else {
- CODEC_TRACE("sqlite3_rekey_v2: error %d occurred writing page %d\n", rc, pgno);
- }
- } else {
- CODEC_TRACE("sqlite3_rekey_v2: error %d occurred getting page %d\n", rc, pgno);
- }
- }
- }
-
- /* if commit was successful commit and copy the rekey data to current key, else rollback to release locks */
- if(rc == SQLITE_OK) {
- CODEC_TRACE("sqlite3_rekey_v2: committing\n");
- rc = sqlite3BtreeCommit(pDb->pBt);
- sqlcipher_codec_key_copy(ctx, CIPHER_WRITE_CTX);
- } else {
- CODEC_TRACE("sqlite3_rekey_v2: rollback\n");
- sqlite3BtreeRollback(pDb->pBt, SQLITE_ABORT_ROLLBACK, 0);
- }
-
- CODEC_TRACE_MUTEX("sqlite3_rekey_v2: leaving database mutex %p\n", db->mutex);
- sqlite3_mutex_leave(db->mutex);
- CODEC_TRACE_MUTEX("sqlite3_rekey_v2: left database mutex %p\n", db->mutex);
- }
- return SQLITE_OK;
- }
- return SQLITE_ERROR;
-}
-
-SQLITE_PRIVATE void sqlite3CodecGetKey(sqlite3* db, int nDb, void **zKey, int *nKey) {
- struct Db *pDb = &db->aDb[nDb];
- CODEC_TRACE("sqlite3CodecGetKey: entered db=%p, nDb=%d\n", db, nDb);
- if( pDb->pBt ) {
- codec_ctx *ctx = (codec_ctx*) sqlite3PagerGetCodec(pDb->pBt->pBt->pPager);
-
- if(ctx) {
- /* pass back the keyspec from the codec, unless PRAGMA cipher_store_pass
- is set or keyspec has not yet been derived, in which case pass
- back the password key material */
- sqlcipher_codec_get_keyspec(ctx, zKey, nKey);
- if(sqlcipher_codec_get_store_pass(ctx) == 1 || *zKey == NULL) {
- sqlcipher_codec_get_pass(ctx, zKey, nKey);
- }
- } else {
- *zKey = NULL;
- *nKey = 0;
- }
- }
-}
-
-#ifndef OMIT_EXPORT
-
-/*
- * Implementation of an "export" function that allows a caller
- * to duplicate the main database to an attached database. This is intended
- * as a conveneince for users who need to:
- *
- * 1. migrate from an non-encrypted database to an encrypted database
- * 2. move from an encrypted database to a non-encrypted database
- * 3. convert beween the various flavors of encrypted databases.
- *
- * This implementation is based heavily on the procedure and code used
- * in vacuum.c, but is exposed as a function that allows export to any
- * named attached database.
- */
-
-/*
-** Finalize a prepared statement. If there was an error, store the
-** text of the error message in *pzErrMsg. Return the result code.
-**
-** Based on vacuumFinalize from vacuum.c
-*/
-static int sqlcipher_finalize(sqlite3 *db, sqlite3_stmt *pStmt, char **pzErrMsg){
- int rc;
- rc = sqlite3VdbeFinalize((Vdbe*)pStmt);
- if( rc ){
- sqlite3SetString(pzErrMsg, db, sqlite3_errmsg(db));
- }
- return rc;
-}
-
-/*
-** Execute zSql on database db. Return an error code.
-**
-** Based on execSql from vacuum.c
-*/
-static int sqlcipher_execSql(sqlite3 *db, char **pzErrMsg, const char *zSql){
- sqlite3_stmt *pStmt;
- VVA_ONLY( int rc; )
- if( !zSql ){
- return SQLITE_NOMEM;
- }
- if( SQLITE_OK!=sqlite3_prepare(db, zSql, -1, &pStmt, 0) ){
- sqlite3SetString(pzErrMsg, db, sqlite3_errmsg(db));
- return sqlite3_errcode(db);
- }
- VVA_ONLY( rc = ) sqlite3_step(pStmt);
- assert( rc!=SQLITE_ROW );
- return sqlcipher_finalize(db, pStmt, pzErrMsg);
-}
-
-/*
-** Execute zSql on database db. The statement returns exactly
-** one column. Execute this as SQL on the same database.
-**
-** Based on execExecSql from vacuum.c
-*/
-static int sqlcipher_execExecSql(sqlite3 *db, char **pzErrMsg, const char *zSql){
- sqlite3_stmt *pStmt;
- int rc;
-
- rc = sqlite3_prepare(db, zSql, -1, &pStmt, 0);
- if( rc!=SQLITE_OK ) return rc;
-
- while( SQLITE_ROW==sqlite3_step(pStmt) ){
- rc = sqlcipher_execSql(db, pzErrMsg, (char*)sqlite3_column_text(pStmt, 0));
- if( rc!=SQLITE_OK ){
- sqlcipher_finalize(db, pStmt, pzErrMsg);
- return rc;
- }
- }
-
- return sqlcipher_finalize(db, pStmt, pzErrMsg);
-}
-
-/*
- * copy database and schema from the main database to an attached database
- *
- * Based on sqlite3RunVacuum from vacuum.c
-*/
-void sqlcipher_exportFunc(sqlite3_context *context, int argc, sqlite3_value **argv) {
- sqlite3 *db = sqlite3_context_db_handle(context);
- const char* targetDb, *sourceDb;
- int targetDb_idx = 0;
- u64 saved_flags = db->flags; /* Saved value of the db->flags */
- u32 saved_mDbFlags = db->mDbFlags; /* Saved value of the db->mDbFlags */
- int saved_nChange = db->nChange; /* Saved value of db->nChange */
- int saved_nTotalChange = db->nTotalChange; /* Saved value of db->nTotalChange */
- u8 saved_mTrace = db->mTrace; /* Saved value of db->mTrace */
- int (*saved_xTrace)(u32,void*,void*,void*) = db->xTrace; /* Saved db->xTrace */
- int rc = SQLITE_OK; /* Return code from service routines */
- char *zSql = NULL; /* SQL statements */
- char *pzErrMsg = NULL;
-
- if(argc != 1 && argc != 2) {
- rc = SQLITE_ERROR;
- pzErrMsg = sqlite3_mprintf("invalid number of arguments (%d) passed to sqlcipher_export", argc);
- goto end_of_export;
- }
-
- targetDb = (const char*) sqlite3_value_text(argv[0]);
- sourceDb = (argc == 2) ? (char *) sqlite3_value_text(argv[1]) : "main";
-
- /* if the name of the target is not main, but the index returned is zero
- there is a mismatch and we should not proceed */
- targetDb_idx = sqlcipher_find_db_index(db, targetDb);
- if(targetDb_idx == 0 && sqlite3StrICmp("main", targetDb) != 0) {
- rc = SQLITE_ERROR;
- pzErrMsg = sqlite3_mprintf("unknown database %s", targetDb);
- goto end_of_export;
- }
- db->init.iDb = targetDb_idx;
-
- db->flags |= SQLITE_WriteSchema | SQLITE_IgnoreChecks;
- db->mDbFlags |= DBFLAG_PreferBuiltin | DBFLAG_Vacuum;
- db->flags &= ~(u64)(SQLITE_ForeignKeys | SQLITE_ReverseOrder | SQLITE_Defensive | SQLITE_CountRows);
- db->xTrace = 0;
- db->mTrace = 0;
-
- /* Query the schema of the main database. Create a mirror schema
- ** in the temporary database.
- */
- zSql = sqlite3_mprintf(
- "SELECT sql "
- " FROM %s.sqlite_master WHERE type='table' AND name!='sqlite_sequence'"
- " AND rootpage>0"
- , sourceDb);
- rc = (zSql == NULL) ? SQLITE_NOMEM : sqlcipher_execExecSql(db, &pzErrMsg, zSql);
- if( rc!=SQLITE_OK ) goto end_of_export;
- sqlite3_free(zSql);
-
- zSql = sqlite3_mprintf(
- "SELECT sql "
- " FROM %s.sqlite_master WHERE sql LIKE 'CREATE INDEX %%' "
- , sourceDb);
- rc = (zSql == NULL) ? SQLITE_NOMEM : sqlcipher_execExecSql(db, &pzErrMsg, zSql);
- if( rc!=SQLITE_OK ) goto end_of_export;
- sqlite3_free(zSql);
-
- zSql = sqlite3_mprintf(
- "SELECT sql "
- " FROM %s.sqlite_master WHERE sql LIKE 'CREATE UNIQUE INDEX %%'"
- , sourceDb);
- rc = (zSql == NULL) ? SQLITE_NOMEM : sqlcipher_execExecSql(db, &pzErrMsg, zSql);
- if( rc!=SQLITE_OK ) goto end_of_export;
- sqlite3_free(zSql);
-
- /* Loop through the tables in the main database. For each, do
- ** an "INSERT INTO rekey_db.xxx SELECT * FROM main.xxx;" to copy
- ** the contents to the temporary database.
- */
- zSql = sqlite3_mprintf(
- "SELECT 'INSERT INTO %s.' || quote(name) "
- "|| ' SELECT * FROM %s.' || quote(name) || ';'"
- "FROM %s.sqlite_master "
- "WHERE type = 'table' AND name!='sqlite_sequence' "
- " AND rootpage>0"
- , targetDb, sourceDb, sourceDb);
- rc = (zSql == NULL) ? SQLITE_NOMEM : sqlcipher_execExecSql(db, &pzErrMsg, zSql);
- if( rc!=SQLITE_OK ) goto end_of_export;
- sqlite3_free(zSql);
-
- /* Copy over the contents of the sequence table
- */
- zSql = sqlite3_mprintf(
- "SELECT 'INSERT INTO %s.' || quote(name) "
- "|| ' SELECT * FROM %s.' || quote(name) || ';' "
- "FROM %s.sqlite_master WHERE name=='sqlite_sequence';"
- , targetDb, sourceDb, targetDb);
- rc = (zSql == NULL) ? SQLITE_NOMEM : sqlcipher_execExecSql(db, &pzErrMsg, zSql);
- if( rc!=SQLITE_OK ) goto end_of_export;
- sqlite3_free(zSql);
-
- /* Copy the triggers, views, and virtual tables from the main database
- ** over to the temporary database. None of these objects has any
- ** associated storage, so all we have to do is copy their entries
- ** from the SQLITE_MASTER table.
- */
- zSql = sqlite3_mprintf(
- "INSERT INTO %s.sqlite_master "
- " SELECT type, name, tbl_name, rootpage, sql"
- " FROM %s.sqlite_master"
- " WHERE type='view' OR type='trigger'"
- " OR (type='table' AND rootpage=0)"
- , targetDb, sourceDb);
- rc = (zSql == NULL) ? SQLITE_NOMEM : sqlcipher_execSql(db, &pzErrMsg, zSql);
- if( rc!=SQLITE_OK ) goto end_of_export;
- sqlite3_free(zSql);
-
- zSql = NULL;
-end_of_export:
- db->init.iDb = 0;
- db->flags = saved_flags;
- db->mDbFlags = saved_mDbFlags;
- db->nChange = saved_nChange;
- db->nTotalChange = saved_nTotalChange;
- db->xTrace = saved_xTrace;
- db->mTrace = saved_mTrace;
-
- if(zSql) sqlite3_free(zSql);
-
- if(rc) {
- if(pzErrMsg != NULL) {
- sqlite3_result_error(context, pzErrMsg, -1);
- sqlite3DbFree(db, pzErrMsg);
- } else {
- sqlite3_result_error(context, sqlite3ErrStr(rc), -1);
- }
- }
-}
-
-#endif
-
-/* END SQLCIPHER */
-#endif
-
-/************** End of crypto.c **********************************************/
-/************** Begin file crypto_impl.c *************************************/
-/*
-** SQLCipher
-** http://sqlcipher.net
-**
-** Copyright (c) 2008 - 2013, ZETETIC LLC
-** All rights reserved.
-**
-** Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are met:
-** * Redistributions of source code must retain the above copyright
-** notice, this list of conditions and the following disclaimer.
-** * Redistributions in binary form must reproduce the above copyright
-** notice, this list of conditions and the following disclaimer in the
-** documentation and/or other materials provided with the distribution.
-** * Neither the name of the ZETETIC LLC nor the
-** names of its contributors may be used to endorse or promote products
-** derived from this software without specific prior written permission.
-**
-** THIS SOFTWARE IS PROVIDED BY ZETETIC LLC ''AS IS'' AND ANY
-** EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-** DISCLAIMED. IN NO EVENT SHALL ZETETIC LLC BE LIABLE FOR ANY
-** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-**
-*/
-/* BEGIN SQLCIPHER */
-#ifdef SQLITE_HAS_CODEC
-
-/* #include "sqlcipher.h" */
-/* #include "crypto.h" */
-#ifndef OMIT_MEMLOCK
-#if defined(__unix__) || defined(__APPLE__) || defined(_AIX)
-#include
-#include
-#include
-#include
-#elif defined(_WIN32)
-#include
-#endif
-#endif
-
-static volatile unsigned int default_flags = DEFAULT_CIPHER_FLAGS;
-static volatile unsigned char hmac_salt_mask = HMAC_SALT_MASK;
-
-#include
-
-#if defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x10000000L
-static volatile int default_kdf_iter = 64000;
-static volatile int default_page_size = 1024;
-static volatile int default_plaintext_header_sz = 0;
-static volatile int default_hmac_algorithm = SQLCIPHER_HMAC_SHA1;
-static volatile int default_kdf_algorithm = SQLCIPHER_PBKDF2_HMAC_SHA1;
-#else
-static volatile int default_kdf_iter = PBKDF2_ITER;
-static volatile int default_page_size = 4096;
-static volatile int default_plaintext_header_sz = 0;
-static volatile int default_hmac_algorithm = SQLCIPHER_HMAC_SHA512;
-static volatile int default_kdf_algorithm = SQLCIPHER_PBKDF2_HMAC_SHA512;
-#endif
-static volatile int mem_security_on = 1;
-static volatile int mem_security_initialized = 0;
-static volatile int mem_security_activated = 0;
-static volatile unsigned int sqlcipher_activate_count = 0;
-static volatile sqlite3_mem_methods default_mem_methods;
-static sqlcipher_provider *default_provider = NULL;
-
-static sqlite3_mutex* sqlcipher_static_mutex[SQLCIPHER_MUTEX_COUNT];
-
-sqlite3_mutex* sqlcipher_mutex(int mutex) {
- if(mutex < 0 || mutex >= SQLCIPHER_MUTEX_COUNT) return NULL;
- return sqlcipher_static_mutex[mutex];
-}
-
-static int sqlcipher_mem_init(void *pAppData) {
- return default_mem_methods.xInit(pAppData);
-}
-static void sqlcipher_mem_shutdown(void *pAppData) {
- default_mem_methods.xShutdown(pAppData);
-}
-static void *sqlcipher_mem_malloc(int n) {
- void *ptr = default_mem_methods.xMalloc(n);
- if(mem_security_on) {
- CODEC_TRACE_MEMORY("sqlcipher_mem_malloc: calling sqlcipher_mlock(%p,%d)\n", ptr, n);
- sqlcipher_mlock(ptr, n);
- if(!mem_security_activated) mem_security_activated = 1;
- }
- return ptr;
-}
-static int sqlcipher_mem_size(void *p) {
- return default_mem_methods.xSize(p);
-}
-static void sqlcipher_mem_free(void *p) {
- int sz;
- if(mem_security_on) {
- sz = sqlcipher_mem_size(p);
- CODEC_TRACE_MEMORY("sqlcipher_mem_free: calling sqlcipher_memset(%p,0,%d) and sqlcipher_munlock(%p, %d) \n", p, sz, p, sz);
- sqlcipher_memset(p, 0, sz);
- sqlcipher_munlock(p, sz);
- if(!mem_security_activated) mem_security_activated = 1;
- }
- default_mem_methods.xFree(p);
-}
-static void *sqlcipher_mem_realloc(void *p, int n) {
- return default_mem_methods.xRealloc(p, n);
-}
-static int sqlcipher_mem_roundup(int n) {
- return default_mem_methods.xRoundup(n);
-}
-
-static sqlite3_mem_methods sqlcipher_mem_methods = {
- sqlcipher_mem_malloc,
- sqlcipher_mem_free,
- sqlcipher_mem_realloc,
- sqlcipher_mem_size,
- sqlcipher_mem_roundup,
- sqlcipher_mem_init,
- sqlcipher_mem_shutdown,
- 0
-};
-
-void sqlcipher_init_memmethods() {
- if(mem_security_initialized) return;
- if(sqlite3_config(SQLITE_CONFIG_GETMALLOC, &default_mem_methods) != SQLITE_OK ||
- sqlite3_config(SQLITE_CONFIG_MALLOC, &sqlcipher_mem_methods) != SQLITE_OK) {
- mem_security_on = mem_security_activated = 0;
- }
- mem_security_initialized = 1;
-}
-
-int sqlcipher_register_provider(sqlcipher_provider *p) {
- CODEC_TRACE_MUTEX("sqlcipher_register_provider: entering SQLCIPHER_MUTEX_PROVIDER\n");
- sqlite3_mutex_enter(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER));
- CODEC_TRACE_MUTEX("sqlcipher_register_provider: entered SQLCIPHER_MUTEX_PROVIDER\n");
-
- if(default_provider != NULL && default_provider != p) {
- /* only free the current registerd provider if it has been initialized
- and it isn't a pointer to the same provider passed to the function
- (i.e. protect against a caller calling register twice for the same provider) */
- sqlcipher_free(default_provider, sizeof(sqlcipher_provider));
- }
- default_provider = p;
- CODEC_TRACE_MUTEX("sqlcipher_register_provider: leaving SQLCIPHER_MUTEX_PROVIDER\n");
- sqlite3_mutex_leave(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER));
- CODEC_TRACE_MUTEX("sqlcipher_register_provider: left SQLCIPHER_MUTEX_PROVIDER\n");
-
- return SQLITE_OK;
-}
-
-/* return a pointer to the currently registered provider. This will
- allow an application to fetch the current registered provider and
- make minor changes to it */
-sqlcipher_provider* sqlcipher_get_provider() {
- return default_provider;
-}
-
-void sqlcipher_activate() {
- CODEC_TRACE_MUTEX("sqlcipher_activate: entering static master mutex\n");
- sqlite3_mutex_enter(sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MASTER));
- CODEC_TRACE_MUTEX("sqlcipher_activate: entered static master mutex\n");
-
- /* allocate new mutexes */
- if(sqlcipher_activate_count == 0) {
- int i;
- for(i = 0; i < SQLCIPHER_MUTEX_COUNT; i++) {
- sqlcipher_static_mutex[i] = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST);
- }
- }
-
- /* check to see if there is a provider registered at this point
- if there no provider registered at this point, register the
- default provider */
- if(sqlcipher_get_provider() == NULL) {
- sqlcipher_provider *p = sqlcipher_malloc(sizeof(sqlcipher_provider));
-#if defined (SQLCIPHER_CRYPTO_CC)
- extern int sqlcipher_cc_setup(sqlcipher_provider *p);
- sqlcipher_cc_setup(p);
-#elif defined (SQLCIPHER_CRYPTO_LIBTOMCRYPT)
- extern int sqlcipher_ltc_setup(sqlcipher_provider *p);
- sqlcipher_ltc_setup(p);
-#elif defined (SQLCIPHER_CRYPTO_NSS)
- extern int sqlcipher_nss_setup(sqlcipher_provider *p);
- sqlcipher_nss_setup(p);
-#elif defined (SQLCIPHER_CRYPTO_OPENSSL)
- extern int sqlcipher_openssl_setup(sqlcipher_provider *p);
- sqlcipher_openssl_setup(p);
-#else
-#error "NO DEFAULT SQLCIPHER CRYPTO PROVIDER DEFINED"
-#endif
- CODEC_TRACE("sqlcipher_activate: calling sqlcipher_register_provider(%p)\n", p);
-#ifdef SQLCIPHER_EXT
- sqlcipher_ext_provider_setup(p);
-#endif
- sqlcipher_register_provider(p);
- CODEC_TRACE("sqlcipher_activate: called sqlcipher_register_provider(%p)\n",p);
- }
-
- sqlcipher_activate_count++; /* increment activation count */
-
- CODEC_TRACE_MUTEX("sqlcipher_activate: leaving static master mutex\n");
- sqlite3_mutex_leave(sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MASTER));
- CODEC_TRACE_MUTEX("sqlcipher_activate: left static master mutex\n");
-}
-
-void sqlcipher_deactivate() {
- CODEC_TRACE_MUTEX("sqlcipher_deactivate: entering static master mutex\n");
- sqlite3_mutex_enter(sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MASTER));
- CODEC_TRACE_MUTEX("sqlcipher_deactivate: entered static master mutex\n");
-
- sqlcipher_activate_count--;
- /* if no connections are using sqlcipher, cleanup globals */
- if(sqlcipher_activate_count < 1) {
-
- CODEC_TRACE_MUTEX("sqlcipher_deactivate: entering SQLCIPHER_MUTEX_PROVIDER\n");
- sqlite3_mutex_enter(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER));
- CODEC_TRACE_MUTEX("sqlcipher_deactivate: entered SQLCIPHER_MUTEX_PROVIDER\n");
-
- if(default_provider != NULL) {
- sqlcipher_free(default_provider, sizeof(sqlcipher_provider));
- default_provider = NULL;
- }
-
- CODEC_TRACE_MUTEX("sqlcipher_deactivate: leaving SQLCIPHER_MUTEX_PROVIDER\n");
- sqlite3_mutex_leave(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER));
- CODEC_TRACE_MUTEX("sqlcipher_deactivate: left SQLCIPHER_MUTEX_PROVIDER\n");
-
-#ifdef SQLCIPHER_EXT
- sqlcipher_ext_provider_destroy();
-#endif
-
- /* last connection closed, free mutexes */
- if(sqlcipher_activate_count == 0) {
- int i;
- for(i = 0; i < SQLCIPHER_MUTEX_COUNT; i++) {
- sqlite3_mutex_free(sqlcipher_static_mutex[i]);
- }
- }
- sqlcipher_activate_count = 0; /* reset activation count */
- }
-
- CODEC_TRACE_MUTEX("sqlcipher_deactivate: leaving static master mutex\n");
- sqlite3_mutex_leave(sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MASTER));
- CODEC_TRACE_MUTEX("sqlcipher_deactivate: left static master mutex\n");
-}
-
-/* constant time memset using volitile to avoid having the memset
- optimized out by the compiler.
- Note: As suggested by Joachim Schipper (joachim.schipper@fox-it.com)
-*/
-void* sqlcipher_memset(void *v, unsigned char value, u64 len) {
- u64 i = 0;
- volatile unsigned char *a = v;
-
- if (v == NULL) return v;
-
- CODEC_TRACE_MEMORY("sqlcipher_memset: setting %p[0-%llu]=%d)\n", a, len, value);
- for(i = 0; i < len; i++) {
- a[i] = value;
- }
-
- return v;
-}
-
-/* constant time memory check tests every position of a memory segement
- matches a single value (i.e. the memory is all zeros)
- returns 0 if match, 1 of no match */
-int sqlcipher_ismemset(const void *v, unsigned char value, u64 len) {
- const unsigned char *a = v;
- u64 i = 0, result = 0;
-
- for(i = 0; i < len; i++) {
- result |= a[i] ^ value;
- }
-
- return (result != 0);
-}
-
-/* constant time memory comparison routine.
- returns 0 if match, 1 if no match */
-int sqlcipher_memcmp(const void *v0, const void *v1, int len) {
- const unsigned char *a0 = v0, *a1 = v1;
- int i = 0, result = 0;
-
- for(i = 0; i < len; i++) {
- result |= a0[i] ^ a1[i];
- }
-
- return (result != 0);
-}
-
-void sqlcipher_mlock(void *ptr, u64 sz) {
-#ifndef OMIT_MEMLOCK
-#if defined(__unix__) || defined(__APPLE__)
- int rc;
- unsigned long pagesize = sysconf(_SC_PAGESIZE);
- unsigned long offset = (unsigned long) ptr % pagesize;
-
- if(ptr == NULL || sz == 0) return;
-
- CODEC_TRACE_MEMORY("sqlcipher_mem_lock: calling mlock(%p,%lu); _SC_PAGESIZE=%lu\n", ptr - offset, sz + offset, pagesize);
- rc = mlock(ptr - offset, sz + offset);
- if(rc!=0) {
- CODEC_TRACE_MEMORY("sqlcipher_mem_lock: mlock(%p,%lu) returned %d errno=%d\n", ptr - offset, sz + offset, rc, errno);
- }
-#elif defined(_WIN32)
-#if !(defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP || WINAPI_FAMILY == WINAPI_FAMILY_APP))
- int rc;
- CODEC_TRACE("sqlcipher_mem_lock: calling VirtualLock(%p,%d)\n", ptr, sz);
- rc = VirtualLock(ptr, sz);
- if(rc==0) {
- CODEC_TRACE("sqlcipher_mem_lock: VirtualLock(%p,%d) returned %d LastError=%d\n", ptr, sz, rc, GetLastError());
- }
-#endif
-#endif
-#endif
-}
-
-void sqlcipher_munlock(void *ptr, u64 sz) {
-#ifndef OMIT_MEMLOCK
-#if defined(__unix__) || defined(__APPLE__)
- int rc;
- unsigned long pagesize = sysconf(_SC_PAGESIZE);
- unsigned long offset = (unsigned long) ptr % pagesize;
-
- if(ptr == NULL || sz == 0) return;
-
- CODEC_TRACE_MEMORY("sqlcipher_mem_unlock: calling munlock(%p,%lu)\n", ptr - offset, sz + offset);
- rc = munlock(ptr - offset, sz + offset);
- if(rc!=0) {
- CODEC_TRACE_MEMORY("sqlcipher_mem_unlock: munlock(%p,%lu) returned %d errno=%d\n", ptr - offset, sz + offset, rc, errno);
- }
-#elif defined(_WIN32)
-#if !(defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP || WINAPI_FAMILY == WINAPI_FAMILY_APP))
- int rc;
- CODEC_TRACE("sqlcipher_mem_lock: calling VirtualUnlock(%p,%d)\n", ptr, sz);
- rc = VirtualUnlock(ptr, sz);
- if(!rc) {
- CODEC_TRACE("sqlcipher_mem_unlock: VirtualUnlock(%p,%d) returned %d LastError=%d\n", ptr, sz, rc, GetLastError());
- }
-#endif
-#endif
-#endif
-}
-
-/**
- * Free and wipe memory. Uses SQLites internal sqlite3_free so that memory
- * can be countend and memory leak detection works in the test suite.
- * If ptr is not null memory will be freed.
- * If sz is greater than zero, the memory will be overwritten with zero before it is freed
- * If sz is > 0, and not compiled with OMIT_MEMLOCK, system will attempt to unlock the
- * memory segment so it can be paged
- */
-void sqlcipher_free(void *ptr, u64 sz) {
- CODEC_TRACE_MEMORY("sqlcipher_free: calling sqlcipher_memset(%p,0,%llu)\n", ptr, sz);
- sqlcipher_memset(ptr, 0, sz);
- sqlcipher_munlock(ptr, sz);
- sqlite3_free(ptr);
-}
-
-/**
- * allocate memory. Uses sqlite's internall malloc wrapper so memory can be
- * reference counted and leak detection works. Unless compiled with OMIT_MEMLOCK
- * attempts to lock the memory pages so sensitive information won't be swapped
- */
-void* sqlcipher_malloc(u64 sz) {
- void *ptr;
- CODEC_TRACE_MEMORY("sqlcipher_malloc: calling sqlite3Malloc(%llu)\n", sz);
- ptr = sqlite3Malloc(sz);
- CODEC_TRACE_MEMORY("sqlcipher_malloc: calling sqlcipher_memset(%p,0,%llu)\n", ptr, sz);
- sqlcipher_memset(ptr, 0, sz);
- sqlcipher_mlock(ptr, sz);
- return ptr;
-}
-
-char* sqlcipher_version() {
-#ifdef CIPHER_VERSION_QUALIFIER
- char *version = sqlite3_mprintf("%s %s %s", CIPHER_XSTR(CIPHER_VERSION_NUMBER), CIPHER_XSTR(CIPHER_VERSION_QUALIFIER), CIPHER_XSTR(CIPHER_VERSION_BUILD));
-#else
- char *version = sqlite3_mprintf("%s %s", CIPHER_XSTR(CIPHER_VERSION_NUMBER), CIPHER_XSTR(CIPHER_VERSION_BUILD));
-#endif
- return version;
-}
-
-/**
- * Initialize new cipher_ctx struct. This function will allocate memory
- * for the cipher context and for the key
- *
- * returns SQLITE_OK if initialization was successful
- * returns SQLITE_NOMEM if an error occured allocating memory
- */
-static int sqlcipher_cipher_ctx_init(codec_ctx *ctx, cipher_ctx **iCtx) {
- cipher_ctx *c_ctx;
- CODEC_TRACE("sqlcipher_cipher_ctx_init: allocating context\n");
- *iCtx = (cipher_ctx *) sqlcipher_malloc(sizeof(cipher_ctx));
- c_ctx = *iCtx;
- if(c_ctx == NULL) return SQLITE_NOMEM;
-
- CODEC_TRACE("sqlcipher_cipher_ctx_init: allocating key\n");
- c_ctx->key = (unsigned char *) sqlcipher_malloc(ctx->key_sz);
-
- CODEC_TRACE("sqlcipher_cipher_ctx_init: allocating hmac_key\n");
- c_ctx->hmac_key = (unsigned char *) sqlcipher_malloc(ctx->key_sz);
-
- if(c_ctx->key == NULL) return SQLITE_NOMEM;
- if(c_ctx->hmac_key == NULL) return SQLITE_NOMEM;
-
- return SQLITE_OK;
-}
-
-/**
- * Free and wipe memory associated with a cipher_ctx
- */
-static void sqlcipher_cipher_ctx_free(codec_ctx* ctx, cipher_ctx **iCtx) {
- cipher_ctx *c_ctx = *iCtx;
- CODEC_TRACE("cipher_ctx_free: entered iCtx=%p\n", iCtx);
- sqlcipher_free(c_ctx->key, ctx->key_sz);
- sqlcipher_free(c_ctx->hmac_key, ctx->key_sz);
- sqlcipher_free(c_ctx->pass, c_ctx->pass_sz);
- sqlcipher_free(c_ctx->keyspec, ctx->keyspec_sz);
- sqlcipher_free(c_ctx, sizeof(cipher_ctx));
-}
-
-static int sqlcipher_codec_ctx_reserve_setup(codec_ctx *ctx) {
- int base_reserve = ctx->iv_sz; /* base reserve size will be IV only */
- int reserve = base_reserve;
-
- ctx->hmac_sz = ctx->provider->get_hmac_sz(ctx->provider_ctx, ctx->hmac_algorithm);
-
- if(sqlcipher_codec_ctx_get_use_hmac(ctx))
- reserve += ctx->hmac_sz; /* if reserve will include hmac, update that size */
-
- /* calculate the amount of reserve needed in even increments of the cipher block size */
- reserve = ((reserve % ctx->block_sz) == 0) ? reserve :
- ((reserve / ctx->block_sz) + 1) * ctx->block_sz;
-
- CODEC_TRACE("sqlcipher_codec_ctx_reserve_setup: base_reserve=%d block_sz=%d md_size=%d reserve=%d\n",
- base_reserve, ctx->block_sz, ctx->hmac_sz, reserve);
-
- ctx->reserve_sz = reserve;
-
- return SQLITE_OK;
-}
-
-/**
- * Compare one cipher_ctx to another.
- *
- * returns 0 if all the parameters (except the derived key data) are the same
- * returns 1 otherwise
- */
-static int sqlcipher_cipher_ctx_cmp(cipher_ctx *c1, cipher_ctx *c2) {
- int are_equal = (
- c1->pass_sz == c2->pass_sz
- && (
- c1->pass == c2->pass
- || !sqlcipher_memcmp((const unsigned char*)c1->pass,
- (const unsigned char*)c2->pass,
- c1->pass_sz)
- ));
-
- CODEC_TRACE("sqlcipher_cipher_ctx_cmp: entered \
- c1=%p c2=%p \
- c1->pass_sz=%d c2->pass_sz=%d \
- c1->pass=%p c2->pass=%p \
- c1->pass=%s c2->pass=%s \
- sqlcipher_memcmp=%d \
- are_equal=%d \
- \n",
- c1, c2,
- c1->pass_sz, c2->pass_sz,
- c1->pass, c2->pass,
- c1->pass, c2->pass,
- (c1->pass == NULL || c2->pass == NULL)
- ? -1 : sqlcipher_memcmp(
- (const unsigned char*)c1->pass,
- (const unsigned char*)c2->pass,
- c1->pass_sz),
- are_equal
- );
-
- return !are_equal; /* return 0 if they are the same, 1 otherwise */
-}
-
-/**
- * Copy one cipher_ctx to another. For instance, assuming that read_ctx is a
- * fully initialized context, you could copy it to write_ctx and all yet data
- * and pass information across
- *
- * returns SQLITE_OK if initialization was successful
- * returns SQLITE_NOMEM if an error occured allocating memory
- */
-static int sqlcipher_cipher_ctx_copy(codec_ctx *ctx, cipher_ctx *target, cipher_ctx *source) {
- void *key = target->key;
- void *hmac_key = target->hmac_key;
-
- CODEC_TRACE("sqlcipher_cipher_ctx_copy: entered target=%p, source=%p\n", target, source);
- sqlcipher_free(target->pass, target->pass_sz);
- sqlcipher_free(target->keyspec, ctx->keyspec_sz);
- memcpy(target, source, sizeof(cipher_ctx));
-
- target->key = key; /* restore pointer to previously allocated key data */
- memcpy(target->key, source->key, ctx->key_sz);
-
- target->hmac_key = hmac_key; /* restore pointer to previously allocated hmac key data */
- memcpy(target->hmac_key, source->hmac_key, ctx->key_sz);
-
- if(source->pass && source->pass_sz) {
- target->pass = sqlcipher_malloc(source->pass_sz);
- if(target->pass == NULL) return SQLITE_NOMEM;
- memcpy(target->pass, source->pass, source->pass_sz);
- }
- if(source->keyspec) {
- target->keyspec = sqlcipher_malloc(ctx->keyspec_sz);
- if(target->keyspec == NULL) return SQLITE_NOMEM;
- memcpy(target->keyspec, source->keyspec, ctx->keyspec_sz);
- }
- return SQLITE_OK;
-}
-
-/**
- * Set the keyspec for the cipher_ctx
- *
- * returns SQLITE_OK if assignment was successfull
- * returns SQLITE_NOMEM if an error occured allocating memory
- */
-static int sqlcipher_cipher_ctx_set_keyspec(codec_ctx *ctx, cipher_ctx *c_ctx, const unsigned char *key) {
- /* free, zero existing pointers and size */
- sqlcipher_free(c_ctx->keyspec, ctx->keyspec_sz);
- c_ctx->keyspec = NULL;
-
- c_ctx->keyspec = sqlcipher_malloc(ctx->keyspec_sz);
- if(c_ctx->keyspec == NULL) return SQLITE_NOMEM;
-
- c_ctx->keyspec[0] = 'x';
- c_ctx->keyspec[1] = '\'';
- cipher_bin2hex(key, ctx->key_sz, c_ctx->keyspec + 2);
- cipher_bin2hex(ctx->kdf_salt, ctx->kdf_salt_sz, c_ctx->keyspec + (ctx->key_sz * 2) + 2);
- c_ctx->keyspec[ctx->keyspec_sz - 1] = '\'';
- return SQLITE_OK;
-}
-
-int sqlcipher_codec_get_store_pass(codec_ctx *ctx) {
- return ctx->store_pass;
-}
-
-void sqlcipher_codec_set_store_pass(codec_ctx *ctx, int value) {
- ctx->store_pass = value;
-}
-
-void sqlcipher_codec_get_pass(codec_ctx *ctx, void **zKey, int *nKey) {
- *zKey = ctx->read_ctx->pass;
- *nKey = ctx->read_ctx->pass_sz;
-}
-
-static void sqlcipher_set_derive_key(codec_ctx *ctx, int derive) {
- if(ctx->read_ctx != NULL) ctx->read_ctx->derive_key = 1;
- if(ctx->write_ctx != NULL) ctx->write_ctx->derive_key = 1;
-}
-
-/**
- * Set the passphrase for the cipher_ctx
- *
- * returns SQLITE_OK if assignment was successfull
- * returns SQLITE_NOMEM if an error occured allocating memory
- */
-static int sqlcipher_cipher_ctx_set_pass(cipher_ctx *ctx, const void *zKey, int nKey) {
- /* free, zero existing pointers and size */
- sqlcipher_free(ctx->pass, ctx->pass_sz);
- ctx->pass = NULL;
- ctx->pass_sz = 0;
-
- if(zKey && nKey) { /* if new password is provided, copy it */
- ctx->pass_sz = nKey;
- ctx->pass = sqlcipher_malloc(nKey);
- if(ctx->pass == NULL) return SQLITE_NOMEM;
- memcpy(ctx->pass, zKey, nKey);
- }
- return SQLITE_OK;
-}
-
-int sqlcipher_codec_ctx_set_pass(codec_ctx *ctx, const void *zKey, int nKey, int for_ctx) {
- cipher_ctx *c_ctx = for_ctx ? ctx->write_ctx : ctx->read_ctx;
- int rc;
-
- if((rc = sqlcipher_cipher_ctx_set_pass(c_ctx, zKey, nKey)) != SQLITE_OK) return rc;
- c_ctx->derive_key = 1;
-
- if(for_ctx == 2)
- if((rc = sqlcipher_cipher_ctx_copy(ctx, for_ctx ? ctx->read_ctx : ctx->write_ctx, c_ctx)) != SQLITE_OK)
- return rc;
-
- return SQLITE_OK;
-}
-
-const char* sqlcipher_codec_ctx_get_cipher(codec_ctx *ctx) {
- return ctx->provider->get_cipher(ctx->provider_ctx);
-}
-
-/* set the global default KDF iteration */
-void sqlcipher_set_default_kdf_iter(int iter) {
- default_kdf_iter = iter;
-}
-
-int sqlcipher_get_default_kdf_iter() {
- return default_kdf_iter;
-}
-
-int sqlcipher_codec_ctx_set_kdf_iter(codec_ctx *ctx, int kdf_iter) {
- ctx->kdf_iter = kdf_iter;
- sqlcipher_set_derive_key(ctx, 1);
- return SQLITE_OK;
-}
-
-int sqlcipher_codec_ctx_get_kdf_iter(codec_ctx *ctx) {
- return ctx->kdf_iter;
-}
-
-int sqlcipher_codec_ctx_set_fast_kdf_iter(codec_ctx *ctx, int fast_kdf_iter) {
- ctx->fast_kdf_iter = fast_kdf_iter;
- sqlcipher_set_derive_key(ctx, 1);
- return SQLITE_OK;
-}
-
-int sqlcipher_codec_ctx_get_fast_kdf_iter(codec_ctx *ctx) {
- return ctx->fast_kdf_iter;
-}
-
-/* set the global default flag for HMAC */
-void sqlcipher_set_default_use_hmac(int use) {
- if(use) default_flags |= CIPHER_FLAG_HMAC;
- else default_flags &= ~CIPHER_FLAG_HMAC;
-}
-
-int sqlcipher_get_default_use_hmac() {
- return (default_flags & CIPHER_FLAG_HMAC) != 0;
-}
-
-void sqlcipher_set_hmac_salt_mask(unsigned char mask) {
- hmac_salt_mask = mask;
-}
-
-unsigned char sqlcipher_get_hmac_salt_mask() {
- return hmac_salt_mask;
-}
-
-/* set the codec flag for whether this individual database should be using hmac */
-int sqlcipher_codec_ctx_set_use_hmac(codec_ctx *ctx, int use) {
- if(use) {
- sqlcipher_codec_ctx_set_flag(ctx, CIPHER_FLAG_HMAC);
- } else {
- sqlcipher_codec_ctx_unset_flag(ctx, CIPHER_FLAG_HMAC);
- }
-
- return sqlcipher_codec_ctx_reserve_setup(ctx);
-}
-
-int sqlcipher_codec_ctx_get_use_hmac(codec_ctx *ctx) {
- return (ctx->flags & CIPHER_FLAG_HMAC) != 0;
-}
-
-/* the length of plaintext header size must be:
- * 1. greater than or equal to zero
- * 2. a multiple of the cipher block size
- * 3. less than the usable size of the first database page
- */
-int sqlcipher_set_default_plaintext_header_size(int size) {
- default_plaintext_header_sz = size;
- return SQLITE_OK;
-}
-
-int sqlcipher_codec_ctx_set_plaintext_header_size(codec_ctx *ctx, int size) {
- if(size >= 0 && (size % ctx->block_sz) == 0 && size < (ctx->page_sz - ctx->reserve_sz)) {
- ctx->plaintext_header_sz = size;
- return SQLITE_OK;
- }
- return SQLITE_ERROR;
-}
-
-int sqlcipher_get_default_plaintext_header_size() {
- return default_plaintext_header_sz;
-}
-
-int sqlcipher_codec_ctx_get_plaintext_header_size(codec_ctx *ctx) {
- return ctx->plaintext_header_sz;
-}
-
-/* manipulate HMAC algorithm */
-int sqlcipher_set_default_hmac_algorithm(int algorithm) {
- default_hmac_algorithm = algorithm;
- return SQLITE_OK;
-}
-
-int sqlcipher_codec_ctx_set_hmac_algorithm(codec_ctx *ctx, int algorithm) {
- ctx->hmac_algorithm = algorithm;
- return sqlcipher_codec_ctx_reserve_setup(ctx);
-}
-
-int sqlcipher_get_default_hmac_algorithm() {
- return default_hmac_algorithm;
-}
-
-int sqlcipher_codec_ctx_get_hmac_algorithm(codec_ctx *ctx) {
- return ctx->hmac_algorithm;
-}
-
-/* manipulate KDF algorithm */
-int sqlcipher_set_default_kdf_algorithm(int algorithm) {
- default_kdf_algorithm = algorithm;
- return SQLITE_OK;
-}
-
-int sqlcipher_codec_ctx_set_kdf_algorithm(codec_ctx *ctx, int algorithm) {
- ctx->kdf_algorithm = algorithm;
- return SQLITE_OK;
-}
-
-int sqlcipher_get_default_kdf_algorithm() {
- return default_kdf_algorithm;
-}
-
-int sqlcipher_codec_ctx_get_kdf_algorithm(codec_ctx *ctx) {
- return ctx->kdf_algorithm;
-}
-
-int sqlcipher_codec_ctx_set_flag(codec_ctx *ctx, unsigned int flag) {
- ctx->flags |= flag;
- return SQLITE_OK;
-}
-
-int sqlcipher_codec_ctx_unset_flag(codec_ctx *ctx, unsigned int flag) {
- ctx->flags &= ~flag;
- return SQLITE_OK;
-}
-
-int sqlcipher_codec_ctx_get_flag(codec_ctx *ctx, unsigned int flag) {
- return (ctx->flags & flag) != 0;
-}
-
-void sqlcipher_codec_ctx_set_error(codec_ctx *ctx, int error) {
- CODEC_TRACE("sqlcipher_codec_ctx_set_error: ctx=%p, error=%d\n", ctx, error);
- sqlite3pager_error(ctx->pBt->pBt->pPager, error);
- ctx->pBt->pBt->db->errCode = error;
-}
-
-int sqlcipher_codec_ctx_get_reservesize(codec_ctx *ctx) {
- return ctx->reserve_sz;
-}
-
-void* sqlcipher_codec_ctx_get_data(codec_ctx *ctx) {
- return ctx->buffer;
-}
-
-static int sqlcipher_codec_ctx_init_kdf_salt(codec_ctx *ctx) {
- sqlite3_file *fd = sqlite3PagerFile(ctx->pBt->pBt->pPager);
-
- if(!ctx->need_kdf_salt) {
- return SQLITE_OK; /* don't reload salt when not needed */
- }
-
- /* read salt from header, if present, otherwise generate a new random salt */
- CODEC_TRACE("sqlcipher_codec_ctx_init_kdf_salt: obtaining salt\n");
- if(fd == NULL || fd->pMethods == 0 || sqlite3OsRead(fd, ctx->kdf_salt, ctx->kdf_salt_sz, 0) != SQLITE_OK) {
- CODEC_TRACE("sqlcipher_codec_ctx_init_kdf_salt: unable to read salt from file header, generating random\n");
- if(ctx->provider->random(ctx->provider_ctx, ctx->kdf_salt, ctx->kdf_salt_sz) != SQLITE_OK) return SQLITE_ERROR;
- }
- ctx->need_kdf_salt = 0;
- return SQLITE_OK;
-}
-
-int sqlcipher_codec_ctx_set_kdf_salt(codec_ctx *ctx, unsigned char *salt, int size) {
- if(size >= ctx->kdf_salt_sz) {
- memcpy(ctx->kdf_salt, salt, ctx->kdf_salt_sz);
- ctx->need_kdf_salt = 0;
- return SQLITE_OK;
- }
- return SQLITE_ERROR;
-}
-
-int sqlcipher_codec_ctx_get_kdf_salt(codec_ctx *ctx, void** salt) {
- int rc = SQLITE_OK;
- if(ctx->need_kdf_salt) {
- rc = sqlcipher_codec_ctx_init_kdf_salt(ctx);
- }
- *salt = ctx->kdf_salt;
- return rc;
-}
-
-void sqlcipher_codec_get_keyspec(codec_ctx *ctx, void **zKey, int *nKey) {
- *zKey = ctx->read_ctx->keyspec;
- *nKey = ctx->keyspec_sz;
-}
-
-int sqlcipher_codec_ctx_set_pagesize(codec_ctx *ctx, int size) {
- if(!((size != 0) && ((size & (size - 1)) == 0)) || size < 512 || size > 65536) {
- CODEC_TRACE(("cipher_page_size not a power of 2 and between 512 and 65536 inclusive\n"));
- return SQLITE_ERROR;
- }
- /* attempt to free the existing page buffer */
- sqlcipher_free(ctx->buffer,ctx->page_sz);
- ctx->page_sz = size;
-
- /* pre-allocate a page buffer of PageSize bytes. This will
- be used as a persistent buffer for encryption and decryption
- operations to avoid overhead of multiple memory allocations*/
- ctx->buffer = sqlcipher_malloc(size);
- if(ctx->buffer == NULL) return SQLITE_NOMEM;
-
- return SQLITE_OK;
-}
-
-int sqlcipher_codec_ctx_get_pagesize(codec_ctx *ctx) {
- return ctx->page_sz;
-}
-
-void sqlcipher_set_default_pagesize(int page_size) {
- default_page_size = page_size;
-}
-
-int sqlcipher_get_default_pagesize() {
- return default_page_size;
-}
-
-void sqlcipher_set_mem_security(int on) {
- mem_security_on = on;
- mem_security_activated = 0;
-}
-
-int sqlcipher_get_mem_security() {
- return mem_security_on && mem_security_activated;
-}
-
-
-int sqlcipher_codec_ctx_init(codec_ctx **iCtx, Db *pDb, Pager *pPager, const void *zKey, int nKey) {
- int rc;
- codec_ctx *ctx;
-
- CODEC_TRACE("sqlcipher_codec_ctx_init: allocating context\n");
-
- *iCtx = sqlcipher_malloc(sizeof(codec_ctx));
- ctx = *iCtx;
-
- if(ctx == NULL) return SQLITE_NOMEM;
-
- ctx->pBt = pDb->pBt; /* assign pointer to database btree structure */
-
- /* allocate space for salt data. Then read the first 16 bytes
- directly off the database file. This is the salt for the
- key derivation function. If we get a short read allocate
- a new random salt value */
- CODEC_TRACE("sqlcipher_codec_ctx_init: allocating kdf_salt\n");
- ctx->kdf_salt_sz = FILE_HEADER_SZ;
- ctx->kdf_salt = sqlcipher_malloc(ctx->kdf_salt_sz);
- if(ctx->kdf_salt == NULL) return SQLITE_NOMEM;
-
- /* allocate space for separate hmac salt data. We want the
- HMAC derivation salt to be different than the encryption
- key derivation salt */
- CODEC_TRACE("sqlcipher_codec_ctx_init: allocating hmac_kdf_salt\n");
- ctx->hmac_kdf_salt = sqlcipher_malloc(ctx->kdf_salt_sz);
- if(ctx->hmac_kdf_salt == NULL) return SQLITE_NOMEM;
-
- /* setup default flags */
- ctx->flags = default_flags;
-
- /* defer attempt to read KDF salt until first use */
- ctx->need_kdf_salt = 1;
-
- /* setup the crypto provider */
- CODEC_TRACE("sqlcipher_codec_ctx_init: allocating provider\n");
- ctx->provider = (sqlcipher_provider *) sqlcipher_malloc(sizeof(sqlcipher_provider));
- if(ctx->provider == NULL) return SQLITE_NOMEM;
-
- /* make a copy of the provider to be used for the duration of the context */
- CODEC_TRACE_MUTEX("sqlcipher_codec_ctx_init: entering SQLCIPHER_MUTEX_PROVIDER\n");
- sqlite3_mutex_enter(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER));
- CODEC_TRACE_MUTEX("sqlcipher_codec_ctx_init: entered SQLCIPHER_MUTEX_PROVIDER\n");
-
- memcpy(ctx->provider, default_provider, sizeof(sqlcipher_provider));
-
- CODEC_TRACE_MUTEX("sqlcipher_codec_ctx_init: leaving SQLCIPHER_MUTEX_PROVIDER\n");
- sqlite3_mutex_leave(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER));
- CODEC_TRACE_MUTEX("sqlcipher_codec_ctx_init: left SQLCIPHER_MUTEX_PROVIDER\n");
-
- CODEC_TRACE("sqlcipher_codec_ctx_init: calling provider ctx_init\n");
- if((rc = ctx->provider->ctx_init(&ctx->provider_ctx)) != SQLITE_OK) return rc;
-
- ctx->key_sz = ctx->provider->get_key_sz(ctx->provider_ctx);
- ctx->iv_sz = ctx->provider->get_iv_sz(ctx->provider_ctx);
- ctx->block_sz = ctx->provider->get_block_sz(ctx->provider_ctx);
-
- /* establic the size for a hex-formated key specification, containing the
- raw encryption key and the salt used to generate it format. will be x'hexkey...hexsalt'
- so oversize by 3 bytes */
- ctx->keyspec_sz = ((ctx->key_sz + ctx->kdf_salt_sz) * 2) + 3;
-
- /*
- Always overwrite page size and set to the default because the first page of the database
- in encrypted and thus sqlite can't effectively determine the pagesize. this causes an issue in
- cases where bytes 16 & 17 of the page header are a power of 2 as reported by John Lehman
- */
- CODEC_TRACE("sqlcipher_codec_ctx_init: calling sqlcipher_codec_ctx_set_pagesize with %d\n", default_page_size);
- if((rc = sqlcipher_codec_ctx_set_pagesize(ctx, default_page_size)) != SQLITE_OK) return rc;
-
- /* establish settings for the KDF iterations and fast (HMAC) KDF iterations */
- CODEC_TRACE("sqlcipher_codec_ctx_init: setting default_kdf_iter\n");
- if((rc = sqlcipher_codec_ctx_set_kdf_iter(ctx, default_kdf_iter)) != SQLITE_OK) return rc;
-
- CODEC_TRACE("sqlcipher_codec_ctx_init: setting fast_kdf_iter\n");
- if((rc = sqlcipher_codec_ctx_set_fast_kdf_iter(ctx, FAST_PBKDF2_ITER)) != SQLITE_OK) return rc;
-
- /* set the default HMAC and KDF algorithms which will determine the reserve size */
- CODEC_TRACE("sqlcipher_codec_ctx_init: calling sqlcipher_codec_ctx_set_hmac_algorithm with %d\n", default_hmac_algorithm);
- if((rc = sqlcipher_codec_ctx_set_hmac_algorithm(ctx, default_hmac_algorithm)) != SQLITE_OK) return rc;
-
- /* Note that use_hmac is a special case that requires recalculation of page size
- so we call set_use_hmac to perform setup */
- CODEC_TRACE("sqlcipher_codec_ctx_init: setting use_hmac\n");
- if((rc = sqlcipher_codec_ctx_set_use_hmac(ctx, default_flags & CIPHER_FLAG_HMAC)) != SQLITE_OK) return rc;
-
- CODEC_TRACE("sqlcipher_codec_ctx_init: calling sqlcipher_codec_ctx_set_kdf_algorithm with %d\n", default_kdf_algorithm);
- if((rc = sqlcipher_codec_ctx_set_kdf_algorithm(ctx, default_kdf_algorithm)) != SQLITE_OK) return rc;
-
- /* setup the default plaintext header size */
- CODEC_TRACE("sqlcipher_codec_ctx_init: calling sqlcipher_codec_ctx_set_plaintext_header_size with %d\n", default_plaintext_header_sz);
- if((rc = sqlcipher_codec_ctx_set_plaintext_header_size(ctx, default_plaintext_header_sz)) != SQLITE_OK) return rc;
-
- /* initialize the read and write sub-contexts. this must happen after key_sz is established */
- CODEC_TRACE("sqlcipher_codec_ctx_init: initializing read_ctx\n");
- if((rc = sqlcipher_cipher_ctx_init(ctx, &ctx->read_ctx)) != SQLITE_OK) return rc;
-
- CODEC_TRACE("sqlcipher_codec_ctx_init: initializing write_ctx\n");
- if((rc = sqlcipher_cipher_ctx_init(ctx, &ctx->write_ctx)) != SQLITE_OK) return rc;
-
- /* set the key material on one of the sub cipher contexts and sync them up */
- CODEC_TRACE("sqlcipher_codec_ctx_init: setting pass key\n");
- if((rc = sqlcipher_codec_ctx_set_pass(ctx, zKey, nKey, 0)) != SQLITE_OK) return rc;
-
- CODEC_TRACE("sqlcipher_codec_ctx_init: copying write_ctx to read_ctx\n");
- if((rc = sqlcipher_cipher_ctx_copy(ctx, ctx->write_ctx, ctx->read_ctx)) != SQLITE_OK) return rc;
-
- return SQLITE_OK;
-}
-
-/**
- * Free and wipe memory associated with a cipher_ctx, including the allocated
- * read_ctx and write_ctx.
- */
-void sqlcipher_codec_ctx_free(codec_ctx **iCtx) {
- codec_ctx *ctx = *iCtx;
- CODEC_TRACE("codec_ctx_free: entered iCtx=%p\n", iCtx);
- sqlcipher_free(ctx->kdf_salt, ctx->kdf_salt_sz);
- sqlcipher_free(ctx->hmac_kdf_salt, ctx->kdf_salt_sz);
- sqlcipher_free(ctx->buffer, 0);
-
- ctx->provider->ctx_free(&ctx->provider_ctx);
- sqlcipher_free(ctx->provider, sizeof(sqlcipher_provider));
-
- sqlcipher_cipher_ctx_free(ctx, &ctx->read_ctx);
- sqlcipher_cipher_ctx_free(ctx, &ctx->write_ctx);
- sqlcipher_free(ctx, sizeof(codec_ctx));
-}
-
-/** convert a 32bit unsigned integer to little endian byte ordering */
-static void sqlcipher_put4byte_le(unsigned char *p, u32 v) {
- p[0] = (u8)v;
- p[1] = (u8)(v>>8);
- p[2] = (u8)(v>>16);
- p[3] = (u8)(v>>24);
-}
-
-static int sqlcipher_page_hmac(codec_ctx *ctx, cipher_ctx *c_ctx, Pgno pgno, unsigned char *in, int in_sz, unsigned char *out) {
- unsigned char pgno_raw[sizeof(pgno)];
- /* we may convert page number to consistent representation before calculating MAC for
- compatibility across big-endian and little-endian platforms.
-
- Note: The public release of sqlcipher 2.0.0 to 2.0.6 had a bug where the bytes of pgno
- were used directly in the MAC. SQLCipher convert's to little endian by default to preserve
- backwards compatibility on the most popular platforms, but can optionally be configured
- to use either big endian or native byte ordering via pragma. */
-
- if(ctx->flags & CIPHER_FLAG_LE_PGNO) { /* compute hmac using little endian pgno*/
- sqlcipher_put4byte_le(pgno_raw, pgno);
- } else if(ctx->flags & CIPHER_FLAG_BE_PGNO) { /* compute hmac using big endian pgno */
- sqlite3Put4byte(pgno_raw, pgno); /* sqlite3Put4byte converts 32bit uint to big endian */
- } else { /* use native byte ordering */
- memcpy(pgno_raw, &pgno, sizeof(pgno));
- }
-
- /* include the encrypted page data, initialization vector, and page number in HMAC. This will
- prevent both tampering with the ciphertext, manipulation of the IV, or resequencing otherwise
- valid pages out of order in a database */
- return ctx->provider->hmac(
- ctx->provider_ctx, ctx->hmac_algorithm, c_ctx->hmac_key,
- ctx->key_sz, in,
- in_sz, (unsigned char*) &pgno_raw,
- sizeof(pgno), out);
-}
-
-/*
- * ctx - codec context
- * pgno - page number in database
- * size - size in bytes of input and output buffers
- * mode - 1 to encrypt, 0 to decrypt
- * in - pointer to input bytes
- * out - pouter to output bytes
- */
-int sqlcipher_page_cipher(codec_ctx *ctx, int for_ctx, Pgno pgno, int mode, int page_sz, unsigned char *in, unsigned char *out) {
- cipher_ctx *c_ctx = for_ctx ? ctx->write_ctx : ctx->read_ctx;
- unsigned char *iv_in, *iv_out, *hmac_in, *hmac_out, *out_start;
- int size;
-
- /* calculate some required positions into various buffers */
- size = page_sz - ctx->reserve_sz; /* adjust size to useable size and memset reserve at end of page */
- iv_out = out + size;
- iv_in = in + size;
-
- /* hmac will be written immediately after the initialization vector. the remainder of the page reserve will contain
- random bytes. note, these pointers are only valid when using hmac */
- hmac_in = in + size + ctx->iv_sz;
- hmac_out = out + size + ctx->iv_sz;
- out_start = out; /* note the original position of the output buffer pointer, as out will be rewritten during encryption */
-
- CODEC_TRACE("codec_cipher:entered pgno=%d, mode=%d, size=%d\n", pgno, mode, size);
- CODEC_HEXDUMP("codec_cipher: input page data", in, page_sz);
-
- /* the key size should never be zero. If it is, error out. */
- if(ctx->key_sz == 0) {
- CODEC_TRACE("codec_cipher: error possible context corruption, key_sz is zero for pgno=%d\n", pgno);
- goto error;
- }
-
- if(mode == CIPHER_ENCRYPT) {
- /* start at front of the reserve block, write random data to the end */
- if(ctx->provider->random(ctx->provider_ctx, iv_out, ctx->reserve_sz) != SQLITE_OK) goto error;
- } else { /* CIPHER_DECRYPT */
- memcpy(iv_out, iv_in, ctx->iv_sz); /* copy the iv from the input to output buffer */
- }
-
- if((ctx->flags & CIPHER_FLAG_HMAC) && (mode == CIPHER_DECRYPT) && !ctx->skip_read_hmac) {
- if(sqlcipher_page_hmac(ctx, c_ctx, pgno, in, size + ctx->iv_sz, hmac_out) != SQLITE_OK) {
- CODEC_TRACE("codec_cipher: hmac operation on decrypt failed for pgno=%d\n", pgno);
- goto error;
- }
-
- CODEC_TRACE("codec_cipher: comparing hmac on in=%p out=%p hmac_sz=%d\n", hmac_in, hmac_out, ctx->hmac_sz);
- if(sqlcipher_memcmp(hmac_in, hmac_out, ctx->hmac_sz) != 0) { /* the hmac check failed */
- if(sqlcipher_ismemset(in, 0, page_sz) == 0) {
- /* first check if the entire contents of the page is zeros. If so, this page
- resulted from a short read (i.e. sqlite attempted to pull a page after the end of the file. these
- short read failures must be ignored for autovaccum mode to work so wipe the output buffer
- and return SQLITE_OK to skip the decryption step. */
- CODEC_TRACE("codec_cipher: zeroed page (short read) for pgno %d, encryption but returning SQLITE_OK\n", pgno);
- sqlcipher_memset(out, 0, page_sz);
- return SQLITE_OK;
- } else {
- /* if the page memory is not all zeros, it means the there was data and a hmac on the page.
- since the check failed, the page was either tampered with or corrupted. wipe the output buffer,
- and return SQLITE_ERROR to the caller */
- CODEC_TRACE("codec_cipher: hmac check failed for pgno=%d returning SQLITE_ERROR\n", pgno);
- goto error;
- }
- }
- }
-
- if(ctx->provider->cipher(ctx->provider_ctx, mode, c_ctx->key, ctx->key_sz, iv_out, in, size, out) != SQLITE_OK) {
- CODEC_TRACE("codec_cipher: cipher operation mode=%d failed for pgno=%d returning SQLITE_ERROR\n", mode, pgno);
- goto error;
- };
-
- if((ctx->flags & CIPHER_FLAG_HMAC) && (mode == CIPHER_ENCRYPT)) {
- if(sqlcipher_page_hmac(ctx, c_ctx, pgno, out_start, size + ctx->iv_sz, hmac_out) != SQLITE_OK) {
- CODEC_TRACE("codec_cipher: hmac operation on encrypt failed for pgno=%d\n", pgno);
- goto error;
- };
- }
-
- CODEC_HEXDUMP("codec_cipher: output page data", out_start, page_sz);
-
- return SQLITE_OK;
-error:
- sqlcipher_memset(out, 0, page_sz);
- return SQLITE_ERROR;
-}
-
-/**
- * Derive an encryption key for a cipher contex key based on the raw password.
- *
- * If the raw key data is formated as x'hex' and there are exactly enough hex chars to fill
- * the key (i.e 64 hex chars for a 256 bit key) then the key data will be used directly.
-
- * Else, if the raw key data is formated as x'hex' and there are exactly enough hex chars to fill
- * the key and the salt (i.e 92 hex chars for a 256 bit key and 16 byte salt) then it will be unpacked
- * as the key followed by the salt.
- *
- * Otherwise, a key data will be derived using PBKDF2
- *
- * returns SQLITE_OK if initialization was successful
- * returns SQLITE_ERROR if the key could't be derived (for instance if pass is NULL or pass_sz is 0)
- */
-static int sqlcipher_cipher_ctx_key_derive(codec_ctx *ctx, cipher_ctx *c_ctx) {
- int rc;
- CODEC_TRACE("cipher_ctx_key_derive: entered c_ctx->pass=%s, c_ctx->pass_sz=%d \
- ctx->kdf_salt=%p ctx->kdf_salt_sz=%d ctx->kdf_iter=%d \
- ctx->hmac_kdf_salt=%p, ctx->fast_kdf_iter=%d ctx->key_sz=%d\n",
- c_ctx->pass, c_ctx->pass_sz, ctx->kdf_salt, ctx->kdf_salt_sz, ctx->kdf_iter,
- ctx->hmac_kdf_salt, ctx->fast_kdf_iter, ctx->key_sz);
-
-
- if(c_ctx->pass && c_ctx->pass_sz) { /* if key material is present on the context for derivation */
-
- /* if necessary, initialize the salt from the header or random source */
- if(ctx->need_kdf_salt) {
- if((rc = sqlcipher_codec_ctx_init_kdf_salt(ctx)) != SQLITE_OK) return rc;
- }
-
- if (c_ctx->pass_sz == ((ctx->key_sz * 2) + 3) && sqlite3StrNICmp((const char *)c_ctx->pass ,"x'", 2) == 0 && cipher_isHex(c_ctx->pass + 2, ctx->key_sz * 2)) {
- int n = c_ctx->pass_sz - 3; /* adjust for leading x' and tailing ' */
- const unsigned char *z = c_ctx->pass + 2; /* adjust lead offset of x' */
- CODEC_TRACE("cipher_ctx_key_derive: using raw key from hex\n");
- cipher_hex2bin(z, n, c_ctx->key);
- } else if (c_ctx->pass_sz == (((ctx->key_sz + ctx->kdf_salt_sz) * 2) + 3) && sqlite3StrNICmp((const char *)c_ctx->pass ,"x'", 2) == 0 && cipher_isHex(c_ctx->pass + 2, (ctx->key_sz + ctx->kdf_salt_sz) * 2)) {
- const unsigned char *z = c_ctx->pass + 2; /* adjust lead offset of x' */
- CODEC_TRACE("cipher_ctx_key_derive: using raw key from hex\n");
- cipher_hex2bin(z, (ctx->key_sz * 2), c_ctx->key);
- cipher_hex2bin(z + (ctx->key_sz * 2), (ctx->kdf_salt_sz * 2), ctx->kdf_salt);
- } else {
- CODEC_TRACE("cipher_ctx_key_derive: deriving key using full PBKDF2 with %d iterations\n", ctx->kdf_iter);
- if(ctx->provider->kdf(ctx->provider_ctx, ctx->kdf_algorithm, c_ctx->pass, c_ctx->pass_sz,
- ctx->kdf_salt, ctx->kdf_salt_sz, ctx->kdf_iter,
- ctx->key_sz, c_ctx->key) != SQLITE_OK) return SQLITE_ERROR;
- }
-
- /* set the context "keyspec" containing the hex-formatted key and salt to be used when attaching databases */
- if((rc = sqlcipher_cipher_ctx_set_keyspec(ctx, c_ctx, c_ctx->key)) != SQLITE_OK) return rc;
-
- /* if this context is setup to use hmac checks, generate a seperate and different
- key for HMAC. In this case, we use the output of the previous KDF as the input to
- this KDF run. This ensures a distinct but predictable HMAC key. */
- if(ctx->flags & CIPHER_FLAG_HMAC) {
- int i;
-
- /* start by copying the kdf key into the hmac salt slot
- then XOR it with the fixed hmac salt defined at compile time
- this ensures that the salt passed in to derive the hmac key, while
- easy to derive and publically known, is not the same as the salt used
- to generate the encryption key */
- memcpy(ctx->hmac_kdf_salt, ctx->kdf_salt, ctx->kdf_salt_sz);
- for(i = 0; i < ctx->kdf_salt_sz; i++) {
- ctx->hmac_kdf_salt[i] ^= hmac_salt_mask;
- }
-
- CODEC_TRACE("cipher_ctx_key_derive: deriving hmac key from encryption key using PBKDF2 with %d iterations\n",
- ctx->fast_kdf_iter);
-
-
- if(ctx->provider->kdf(ctx->provider_ctx, ctx->kdf_algorithm, c_ctx->key, ctx->key_sz,
- ctx->hmac_kdf_salt, ctx->kdf_salt_sz, ctx->fast_kdf_iter,
- ctx->key_sz, c_ctx->hmac_key) != SQLITE_OK) return SQLITE_ERROR;
- }
-
- c_ctx->derive_key = 0;
- return SQLITE_OK;
- };
- return SQLITE_ERROR;
-}
-
-int sqlcipher_codec_key_derive(codec_ctx *ctx) {
- /* derive key on first use if necessary */
- if(ctx->read_ctx->derive_key) {
- if(sqlcipher_cipher_ctx_key_derive(ctx, ctx->read_ctx) != SQLITE_OK) return SQLITE_ERROR;
- }
-
- if(ctx->write_ctx->derive_key) {
- if(sqlcipher_cipher_ctx_cmp(ctx->write_ctx, ctx->read_ctx) == 0) {
- /* the relevant parameters are the same, just copy read key */
- if(sqlcipher_cipher_ctx_copy(ctx, ctx->write_ctx, ctx->read_ctx) != SQLITE_OK) return SQLITE_ERROR;
- } else {
- if(sqlcipher_cipher_ctx_key_derive(ctx, ctx->write_ctx) != SQLITE_OK) return SQLITE_ERROR;
- }
- }
-
- /* TODO: wipe and free passphrase after key derivation */
- if(ctx->store_pass != 1) {
- sqlcipher_cipher_ctx_set_pass(ctx->read_ctx, NULL, 0);
- sqlcipher_cipher_ctx_set_pass(ctx->write_ctx, NULL, 0);
- }
-
- return SQLITE_OK;
-}
-
-int sqlcipher_codec_key_copy(codec_ctx *ctx, int source) {
- if(source == CIPHER_READ_CTX) {
- return sqlcipher_cipher_ctx_copy(ctx, ctx->write_ctx, ctx->read_ctx);
- } else {
- return sqlcipher_cipher_ctx_copy(ctx, ctx->read_ctx, ctx->write_ctx);
- }
-}
-
-const char* sqlcipher_codec_get_cipher_provider(codec_ctx *ctx) {
- return ctx->provider->get_provider_name(ctx->provider_ctx);
-}
-
-
-static int sqlcipher_check_connection(const char *filename, char *key, int key_sz, char *sql, int *user_version, char** journal_mode) {
- int rc;
- sqlite3 *db = NULL;
- sqlite3_stmt *statement = NULL;
- char *query_journal_mode = "PRAGMA journal_mode;";
- char *query_user_version = "PRAGMA user_version;";
-
- rc = sqlite3_open(filename, &db);
- if(rc != SQLITE_OK) goto cleanup;
-
- rc = sqlite3_key(db, key, key_sz);
- if(rc != SQLITE_OK) goto cleanup;
-
- rc = sqlite3_exec(db, sql, NULL, NULL, NULL);
- if(rc != SQLITE_OK) goto cleanup;
-
- /* start by querying the user version.
- this will fail if the key is incorrect */
- rc = sqlite3_prepare(db, query_user_version, -1, &statement, NULL);
- if(rc != SQLITE_OK) goto cleanup;
-
- rc = sqlite3_step(statement);
- if(rc == SQLITE_ROW) {
- *user_version = sqlite3_column_int(statement, 0);
- } else {
- goto cleanup;
- }
- sqlite3_finalize(statement);
-
- rc = sqlite3_prepare(db, query_journal_mode, -1, &statement, NULL);
- if(rc != SQLITE_OK) goto cleanup;
-
- rc = sqlite3_step(statement);
- if(rc == SQLITE_ROW) {
- *journal_mode = sqlite3_mprintf("%s", sqlite3_column_text(statement, 0));
- } else {
- goto cleanup;
- }
- rc = SQLITE_OK;
- /* cleanup will finalize open statement */
-
-cleanup:
- if(statement) sqlite3_finalize(statement);
- if(db) sqlite3_close(db);
- return rc;
-}
-
-int sqlcipher_codec_ctx_integrity_check(codec_ctx *ctx, Parse *pParse, char *column) {
- Pgno page = 1;
- int rc = 0;
- char *result;
- unsigned char *hmac_out = NULL;
- sqlite3_file *fd = sqlite3PagerFile(ctx->pBt->pBt->pPager);
- i64 file_sz;
-
- Vdbe *v = sqlite3GetVdbe(pParse);
- sqlite3VdbeSetNumCols(v, 1);
- sqlite3VdbeSetColName(v, 0, COLNAME_NAME, column, SQLITE_STATIC);
-
- if(fd == NULL || fd->pMethods == 0) {
- sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, "database file is undefined", P4_TRANSIENT);
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
- goto cleanup;
- }
-
- if(!(ctx->flags & CIPHER_FLAG_HMAC)) {
- sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, "HMAC is not enabled, unable to integrity check", P4_TRANSIENT);
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
- goto cleanup;
- }
-
- if((rc = sqlcipher_codec_key_derive(ctx)) != SQLITE_OK) {
- sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, "unable to derive keys", P4_TRANSIENT);
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
- goto cleanup;
- }
-
- sqlite3OsFileSize(fd, &file_sz);
- hmac_out = sqlcipher_malloc(ctx->hmac_sz);
-
- for(page = 1; page <= file_sz / ctx->page_sz; page++) {
- int offset = (page - 1) * ctx->page_sz;
- int payload_sz = ctx->page_sz - ctx->reserve_sz + ctx->iv_sz;
- int read_sz = ctx->page_sz;
-
- if(page==1) {
- int page1_offset = ctx->plaintext_header_sz ? ctx->plaintext_header_sz : FILE_HEADER_SZ;
- read_sz = read_sz - page1_offset;
- payload_sz = payload_sz - page1_offset;
- offset += page1_offset;
- }
-
- sqlcipher_memset(ctx->buffer, 0, ctx->page_sz);
- sqlcipher_memset(hmac_out, 0, ctx->hmac_sz);
- if(sqlite3OsRead(fd, ctx->buffer, read_sz, offset) != SQLITE_OK) {
- result = sqlite3_mprintf("error reading %d bytes from file page %d at offset %d\n", read_sz, page, offset);
- sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, result, P4_DYNAMIC);
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
- } else if(sqlcipher_page_hmac(ctx, ctx->read_ctx, page, ctx->buffer, payload_sz, hmac_out) != SQLITE_OK) {
- result = sqlite3_mprintf("HMAC operation failed for page %d", page);
- sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, result, P4_DYNAMIC);
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
- } else if(sqlcipher_memcmp(ctx->buffer + payload_sz, hmac_out, ctx->hmac_sz) != 0) {
- result = sqlite3_mprintf("HMAC verification failed for page %d", page);
- sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, result, P4_DYNAMIC);
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
- }
- }
-
- if(file_sz % ctx->page_sz != 0) {
- result = sqlite3_mprintf("page %d has an invalid size of %lld bytes", page, file_sz - ((file_sz / ctx->page_sz) * ctx->page_sz));
- sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, result, P4_DYNAMIC);
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
- }
-
-cleanup:
- if(hmac_out != NULL) sqlcipher_free(hmac_out, ctx->hmac_sz);
- return SQLITE_OK;
-}
-
-int sqlcipher_codec_ctx_migrate(codec_ctx *ctx) {
- int i, pass_sz, keyspec_sz, nRes, user_version, rc, oflags;
- Db *pDb = 0;
- sqlite3 *db = ctx->pBt->db;
- const char *db_filename = sqlite3_db_filename(db, "main");
- char *set_user_version = NULL, *pass = NULL, *attach_command = NULL, *migrated_db_filename = NULL, *keyspec = NULL, *temp = NULL, *journal_mode = NULL, *set_journal_mode = NULL, *pragma_compat = NULL;
- Btree *pDest = NULL, *pSrc = NULL;
- sqlite3_file *srcfile, *destfile;
-#if defined(_WIN32) || defined(SQLITE_OS_WINRT)
- LPWSTR w_db_filename = NULL, w_migrated_db_filename = NULL;
- int w_db_filename_sz = 0, w_migrated_db_filename_sz = 0;
-#endif
- pass_sz = keyspec_sz = rc = user_version = 0;
-
- if(!db_filename || sqlite3Strlen30(db_filename) < 1)
- goto cleanup; /* exit immediately if this is an in memory database */
-
- /* pull the provided password / key material off the current codec context */
- pass_sz = ctx->read_ctx->pass_sz;
- pass = sqlcipher_malloc(pass_sz+1);
- memset(pass, 0, pass_sz+1);
- memcpy(pass, ctx->read_ctx->pass, pass_sz);
-
- /* Version 4 - current, no upgrade required, so exit immediately */
- rc = sqlcipher_check_connection(db_filename, pass, pass_sz, "", &user_version, &journal_mode);
- if(rc == SQLITE_OK){
- CODEC_TRACE("No upgrade required - exiting\n");
- goto cleanup;
- }
-
- for(i = 3; i > 0; i--) {
- pragma_compat = sqlite3_mprintf("PRAGMA cipher_compatibility = %d;", i);
- rc = sqlcipher_check_connection(db_filename, pass, pass_sz, pragma_compat, &user_version, &journal_mode);
- if(rc == SQLITE_OK) {
- CODEC_TRACE("Version %d format found\n", i);
- goto migrate;
- }
- if(pragma_compat) sqlcipher_free(pragma_compat, sqlite3Strlen30(pragma_compat));
- pragma_compat = NULL;
- }
- /* if we exit the loop normally we failed to determine the version, this is an error */
- CODEC_TRACE("Upgrade format not determined\n");
- goto handle_error;
-
-migrate:
-
- temp = sqlite3_mprintf("%s-migrated", db_filename);
- /* overallocate migrated_db_filename, because sqlite3OsOpen will read past the null terminator
- * to determine whether the filename was URI formatted */
- migrated_db_filename = sqlcipher_malloc(sqlite3Strlen30(temp)+2);
- memcpy(migrated_db_filename, temp, sqlite3Strlen30(temp));
- sqlcipher_free(temp, sqlite3Strlen30(temp));
-
- attach_command = sqlite3_mprintf("ATTACH DATABASE '%s' as migrate;", migrated_db_filename, pass);
- set_user_version = sqlite3_mprintf("PRAGMA migrate.user_version = %d;", user_version);
-
- rc = sqlite3_exec(db, pragma_compat, NULL, NULL, NULL);
- if(rc != SQLITE_OK){
- CODEC_TRACE("set compatibility mode failed, error code %d\n", rc);
- goto handle_error;
- }
-
- /* force journal mode to DELETE, we will set it back later if different */
- rc = sqlite3_exec(db, "PRAGMA journal_mode = delete;", NULL, NULL, NULL);
- if(rc != SQLITE_OK){
- CODEC_TRACE("force journal mode DELETE failed, error code %d\n", rc);
- goto handle_error;
- }
-
- rc = sqlite3_exec(db, attach_command, NULL, NULL, NULL);
- if(rc != SQLITE_OK){
- CODEC_TRACE("attach failed, error code %d\n", rc);
- goto handle_error;
- }
-
- rc = sqlite3_key_v2(db, "migrate", pass, pass_sz);
- if(rc != SQLITE_OK){
- CODEC_TRACE("keying attached database failed, error code %d\n", rc);
- goto handle_error;
- }
-
- rc = sqlite3_exec(db, "SELECT sqlcipher_export('migrate');", NULL, NULL, NULL);
- if(rc != SQLITE_OK){
- CODEC_TRACE("sqlcipher_export failed, error code %d\n", rc);
- goto handle_error;
- }
-
- rc = sqlite3_exec(db, set_user_version, NULL, NULL, NULL);
- if(rc != SQLITE_OK){
- CODEC_TRACE("set user version failed, error code %d\n", rc);
- goto handle_error;
- }
-
- if( !db->autoCommit ){
- CODEC_TRACE("cannot migrate from within a transaction");
- goto handle_error;
- }
- if( db->nVdbeActive>1 ){
- CODEC_TRACE("cannot migrate - SQL statements in progress");
- goto handle_error;
- }
-
- pDest = db->aDb[0].pBt;
- pDb = &(db->aDb[db->nDb-1]);
- pSrc = pDb->pBt;
-
- nRes = sqlite3BtreeGetOptimalReserve(pSrc);
- /* unset the BTS_PAGESIZE_FIXED flag to avoid SQLITE_READONLY */
- pDest->pBt->btsFlags &= ~BTS_PAGESIZE_FIXED;
- rc = sqlite3BtreeSetPageSize(pDest, default_page_size, nRes, 0);
- CODEC_TRACE("set btree page size to %d res %d rc %d\n", default_page_size, nRes, rc);
- if( rc!=SQLITE_OK ) goto handle_error;
-
- sqlite3CodecGetKey(db, db->nDb - 1, (void**)&keyspec, &keyspec_sz);
- sqlite3CodecAttach(db, 0, keyspec, keyspec_sz);
-
- srcfile = sqlite3PagerFile(pSrc->pBt->pPager);
- destfile = sqlite3PagerFile(pDest->pBt->pPager);
-
- sqlite3OsClose(srcfile);
- sqlite3OsClose(destfile);
-
-#if defined(_WIN32) || defined(SQLITE_OS_WINRT)
- CODEC_TRACE("performing windows MoveFileExA\n");
-
- w_db_filename_sz = MultiByteToWideChar(CP_UTF8, 0, (LPCCH) db_filename, -1, NULL, 0);
- w_db_filename = sqlcipher_malloc(w_db_filename_sz * sizeof(wchar_t));
- w_db_filename_sz = MultiByteToWideChar(CP_UTF8, 0, (LPCCH) db_filename, -1, (const LPWSTR) w_db_filename, w_db_filename_sz);
-
- w_migrated_db_filename_sz = MultiByteToWideChar(CP_UTF8, 0, (LPCCH) migrated_db_filename, -1, NULL, 0);
- w_migrated_db_filename = sqlcipher_malloc(w_migrated_db_filename_sz * sizeof(wchar_t));
- w_migrated_db_filename_sz = MultiByteToWideChar(CP_UTF8, 0, (LPCCH) migrated_db_filename, -1, (const LPWSTR) w_migrated_db_filename, w_migrated_db_filename_sz);
-
- if(!MoveFileExW(w_migrated_db_filename, w_db_filename, MOVEFILE_REPLACE_EXISTING)) {
- CODEC_TRACE("move error");
- rc = SQLITE_ERROR;
- CODEC_TRACE("error occurred while renaming %d\n", rc);
- goto handle_error;
- }
-#else
- CODEC_TRACE("performing POSIX rename\n");
- if ((rc = rename(migrated_db_filename, db_filename)) != 0) {
- CODEC_TRACE("error occurred while renaming %d\n", rc);
- goto handle_error;
- }
-#endif
- CODEC_TRACE("renamed migration database %s to main database %s: %d\n", migrated_db_filename, db_filename, rc);
-
- rc = sqlite3OsOpen(db->pVfs, migrated_db_filename, srcfile, SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE|SQLITE_OPEN_MAIN_DB, &oflags);
- CODEC_TRACE("reopened migration database: %d\n", rc);
- if( rc!=SQLITE_OK ) goto handle_error;
-
- rc = sqlite3OsOpen(db->pVfs, db_filename, destfile, SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE|SQLITE_OPEN_MAIN_DB, &oflags);
- CODEC_TRACE("reopened main database: %d\n", rc);
- if( rc!=SQLITE_OK ) goto handle_error;
-
- sqlite3pager_reset(pDest->pBt->pPager);
- CODEC_TRACE("reset pager\n");
-
- rc = sqlite3_exec(db, "DETACH DATABASE migrate;", NULL, NULL, NULL);
- CODEC_TRACE("DETACH DATABASE called %d\n", rc);
- if(rc != SQLITE_OK) goto cleanup;
-
- rc = sqlite3OsDelete(db->pVfs, migrated_db_filename, 0);
- CODEC_TRACE("deleted migration database: %d\n", rc);
- if( rc!=SQLITE_OK ) goto handle_error;
-
- sqlite3ResetAllSchemasOfConnection(db);
- CODEC_TRACE("reset all schemas\n");
-
- set_journal_mode = sqlite3_mprintf("PRAGMA journal_mode = %s;", journal_mode);
- rc = sqlite3_exec(db, set_journal_mode, NULL, NULL, NULL);
- CODEC_TRACE("%s: %d\n", set_journal_mode, rc);
- if( rc!=SQLITE_OK ) goto handle_error;
-
- goto cleanup;
-
-handle_error:
- CODEC_TRACE("An error occurred attempting to migrate the database - last error %d\n", rc);
- rc = SQLITE_ERROR;
-
-cleanup:
- if(pass) sqlcipher_free(pass, pass_sz);
- if(attach_command) sqlcipher_free(attach_command, sqlite3Strlen30(attach_command));
- if(migrated_db_filename) sqlcipher_free(migrated_db_filename, sqlite3Strlen30(migrated_db_filename));
- if(set_user_version) sqlcipher_free(set_user_version, sqlite3Strlen30(set_user_version));
- if(set_journal_mode) sqlcipher_free(set_journal_mode, sqlite3Strlen30(set_journal_mode));
- if(journal_mode) sqlcipher_free(journal_mode, sqlite3Strlen30(journal_mode));
- if(pragma_compat) sqlcipher_free(pragma_compat, sqlite3Strlen30(pragma_compat));
-#if defined(_WIN32) || defined(SQLITE_OS_WINRT)
- if(w_db_filename) sqlcipher_free(w_db_filename, w_db_filename_sz);
- if(w_migrated_db_filename) sqlcipher_free(w_migrated_db_filename, w_migrated_db_filename_sz);
-#endif
- return rc;
-}
-
-int sqlcipher_codec_add_random(codec_ctx *ctx, const char *zRight, int random_sz){
- const char *suffix = &zRight[random_sz-1];
- int n = random_sz - 3; /* adjust for leading x' and tailing ' */
- if (n > 0 &&
- sqlite3StrNICmp((const char *)zRight ,"x'", 2) == 0 &&
- sqlite3StrNICmp(suffix, "'", 1) == 0 &&
- n % 2 == 0) {
- int rc = 0;
- int buffer_sz = n / 2;
- unsigned char *random;
- const unsigned char *z = (const unsigned char *)zRight + 2; /* adjust lead offset of x' */
- CODEC_TRACE("sqlcipher_codec_add_random: using raw random blob from hex\n");
- random = sqlcipher_malloc(buffer_sz);
- memset(random, 0, buffer_sz);
- cipher_hex2bin(z, n, random);
- rc = ctx->provider->add_random(ctx->provider_ctx, random, buffer_sz);
- sqlcipher_free(random, buffer_sz);
- return rc;
- }
- return SQLITE_ERROR;
-}
-
-static void sqlcipher_profile_callback(void *file, const char *sql, sqlite3_uint64 run_time){
- FILE *f = (FILE*)file;
- double elapsed = run_time/1000000.0;
- if(f) fprintf(f, "Elapsed time:%.3f ms - %s\n", elapsed, sql);
-}
-
-int sqlcipher_cipher_profile(sqlite3 *db, const char *destination){
-#if defined(SQLITE_OMIT_TRACE) || defined(SQLITE_OMIT_DEPRECATED)
- return SQLITE_ERROR;
-#else
- FILE *f;
- if(sqlite3StrICmp(destination, "stdout") == 0){
- f = stdout;
- }else if(sqlite3StrICmp(destination, "stderr") == 0){
- f = stderr;
- }else if(sqlite3StrICmp(destination, "off") == 0){
- f = 0;
- }else{
-#if !defined(SQLCIPHER_PROFILE_USE_FOPEN) && (defined(_WIN32) && (__STDC_VERSION__ > 199901L) || defined(SQLITE_OS_WINRT))
- if(fopen_s(&f, destination, "a") != 0) return SQLITE_ERROR;
-#else
- if((f = fopen(destination, "a")) == 0) return SQLITE_ERROR;
-#endif
- }
- sqlite3_profile(db, sqlcipher_profile_callback, f);
- return SQLITE_OK;
-#endif
-}
-
-int sqlcipher_codec_fips_status(codec_ctx *ctx) {
- return ctx->provider->fips_status(ctx->provider_ctx);
-}
-
-const char* sqlcipher_codec_get_provider_version(codec_ctx *ctx) {
- return ctx->provider->get_provider_version(ctx->provider_ctx);
-}
-
-#endif
-/* END SQLCIPHER */
-
-/************** End of crypto_impl.c *****************************************/
-/************** Begin file crypto_libtomcrypt.c ******************************/
-/*
-** SQLCipher
-** http://sqlcipher.net
-**
-** Copyright (c) 2008 - 2013, ZETETIC LLC
-** All rights reserved.
-**
-** Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are met:
-** * Redistributions of source code must retain the above copyright
-** notice, this list of conditions and the following disclaimer.
-** * Redistributions in binary form must reproduce the above copyright
-** notice, this list of conditions and the following disclaimer in the
-** documentation and/or other materials provided with the distribution.
-** * Neither the name of the ZETETIC LLC nor the
-** names of its contributors may be used to endorse or promote products
-** derived from this software without specific prior written permission.
-**
-** THIS SOFTWARE IS PROVIDED BY ZETETIC LLC ''AS IS'' AND ANY
-** EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-** DISCLAIMED. IN NO EVENT SHALL ZETETIC LLC BE LIABLE FOR ANY
-** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-**
-*/
-/* BEGIN SQLCIPHER */
-#ifdef SQLITE_HAS_CODEC
-#ifdef SQLCIPHER_CRYPTO_LIBTOMCRYPT
-/* #include "sqliteInt.h" */
-/* #include "sqlcipher.h" */
-#include
-
-#define FORTUNA_MAX_SZ 32
-static prng_state prng;
-static volatile unsigned int ltc_init = 0;
-static volatile unsigned int ltc_ref_count = 0;
-
-#define LTC_CIPHER "rijndael"
-
-static int sqlcipher_ltc_add_random(void *ctx, void *buffer, int length) {
- int rc = 0;
- int data_to_read = length;
- int block_sz = data_to_read < FORTUNA_MAX_SZ ? data_to_read : FORTUNA_MAX_SZ;
- const unsigned char * data = (const unsigned char *)buffer;
-
- CODEC_TRACE_MUTEX("sqlcipher_ltc_add_random: entering SQLCIPHER_MUTEX_PROVIDER_RAND\n");
- sqlite3_mutex_enter(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_RAND));
- CODEC_TRACE_MUTEX("sqlcipher_ltc_add_random: entered SQLCIPHER_MUTEX_PROVIDER_RAND\n");
-
- while(data_to_read > 0){
- rc = fortuna_add_entropy(data, block_sz, &prng);
- rc = rc != CRYPT_OK ? SQLITE_ERROR : SQLITE_OK;
- if(rc != SQLITE_OK){
- break;
- }
- data_to_read -= block_sz;
- data += block_sz;
- block_sz = data_to_read < FORTUNA_MAX_SZ ? data_to_read : FORTUNA_MAX_SZ;
- }
- fortuna_ready(&prng);
-
- CODEC_TRACE_MUTEX("sqlcipher_ltc_add_random: leaving SQLCIPHER_MUTEX_PROVIDER_RAND\n");
- sqlite3_mutex_leave(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_RAND));
- CODEC_TRACE_MUTEX("sqlcipher_ltc_add_random: left SQLCIPHER_MUTEX_PROVIDER_RAND\n");
-
- return rc;
-}
-
-static int sqlcipher_ltc_activate(void *ctx) {
- unsigned char random_buffer[FORTUNA_MAX_SZ];
-
- CODEC_TRACE_MUTEX("sqlcipher_ltc_activate: entering SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- sqlite3_mutex_enter(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_ACTIVATE));
- CODEC_TRACE_MUTEX("sqlcipher_ltc_activate: entered SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
-
- sqlcipher_memset(random_buffer, 0, FORTUNA_MAX_SZ);
- if(ltc_init == 0) {
- if(register_prng(&fortuna_desc) < 0) return SQLITE_ERROR;
- if(register_cipher(&rijndael_desc) < 0) return SQLITE_ERROR;
- if(register_hash(&sha512_desc) < 0) return SQLITE_ERROR;
- if(register_hash(&sha256_desc) < 0) return SQLITE_ERROR;
- if(register_hash(&sha1_desc) < 0) return SQLITE_ERROR;
- if(fortuna_start(&prng) != CRYPT_OK) {
- return SQLITE_ERROR;
- }
-
- ltc_init = 1;
- }
- ltc_ref_count++;
-
-#ifndef SQLCIPHER_TEST
- sqlite3_randomness(FORTUNA_MAX_SZ, random_buffer);
-#endif
-
- if(sqlcipher_ltc_add_random(ctx, random_buffer, FORTUNA_MAX_SZ) != SQLITE_OK) {
- return SQLITE_ERROR;
- }
- sqlcipher_memset(random_buffer, 0, FORTUNA_MAX_SZ);
-
- CODEC_TRACE_MUTEX("sqlcipher_ltc_activate: leaving SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- sqlite3_mutex_leave(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_ACTIVATE));
- CODEC_TRACE_MUTEX("sqlcipher_ltc_activate: left SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
-
- return SQLITE_OK;
-}
-
-static int sqlcipher_ltc_deactivate(void *ctx) {
- CODEC_TRACE_MUTEX("sqlcipher_ltc_deactivate: entering SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- sqlite3_mutex_enter(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_ACTIVATE));
- CODEC_TRACE_MUTEX("sqlcipher_ltc_deactivate: entered SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
-
- ltc_ref_count--;
- if(ltc_ref_count == 0){
- fortuna_done(&prng);
- sqlcipher_memset((void *)&prng, 0, sizeof(prng));
- }
-
- CODEC_TRACE_MUTEX("sqlcipher_ltc_deactivate: leaving SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- sqlite3_mutex_leave(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_ACTIVATE));
- CODEC_TRACE_MUTEX("sqlcipher_ltc_deactivate: left SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
-
- return SQLITE_OK;
-}
-
-static const char* sqlcipher_ltc_get_provider_name(void *ctx) {
- return "libtomcrypt";
-}
-
-static const char* sqlcipher_ltc_get_provider_version(void *ctx) {
- return SCRYPT;
-}
-
-static int sqlcipher_ltc_random(void *ctx, void *buffer, int length) {
- CODEC_TRACE_MUTEX("sqlcipher_ltc_random: entering SQLCIPHER_MUTEX_PROVIDER_RAND\n");
- sqlite3_mutex_enter(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_RAND));
- CODEC_TRACE_MUTEX("sqlcipher_ltc_random: entered SQLCIPHER_MUTEX_PROVIDER_RAND\n");
-
- fortuna_read(buffer, length, &prng);
-
- CODEC_TRACE_MUTEX("sqlcipher_ltc_random: leaving SQLCIPHER_MUTEX_PROVIDER_RAND\n");
- sqlite3_mutex_leave(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_RAND));
- CODEC_TRACE_MUTEX("sqlcipher_ltc_random: left SQLCIPHER_MUTEX_PROVIDER_RAND\n");
-
- return SQLITE_OK;
-}
-
-static int sqlcipher_ltc_hmac(void *ctx, int algorithm, unsigned char *hmac_key, int key_sz, unsigned char *in, int in_sz, unsigned char *in2, int in2_sz, unsigned char *out) {
- int rc, hash_idx;
- hmac_state hmac;
- unsigned long outlen;
- switch(algorithm) {
- case SQLCIPHER_HMAC_SHA1:
- hash_idx = find_hash("sha1");
- break;
- case SQLCIPHER_HMAC_SHA256:
- hash_idx = find_hash("sha256");
- break;
- case SQLCIPHER_HMAC_SHA512:
- hash_idx = find_hash("sha512");
- break;
- default:
- return SQLITE_ERROR;
- }
-
- if(hash_idx < 0) return SQLITE_ERROR;
- outlen = hash_descriptor[hash_idx].hashsize;
-
- if(in == NULL) return SQLITE_ERROR;
- if((rc = hmac_init(&hmac, hash_idx, hmac_key, key_sz)) != CRYPT_OK) return SQLITE_ERROR;
- if((rc = hmac_process(&hmac, in, in_sz)) != CRYPT_OK) return SQLITE_ERROR;
- if(in2 != NULL && (rc = hmac_process(&hmac, in2, in2_sz)) != CRYPT_OK) return SQLITE_ERROR;
- if((rc = hmac_done(&hmac, out, &outlen)) != CRYPT_OK) return SQLITE_ERROR;
- return SQLITE_OK;
-}
-
-static int sqlcipher_ltc_kdf(void *ctx, int algorithm, const unsigned char *pass, int pass_sz, unsigned char* salt, int salt_sz, int workfactor, int key_sz, unsigned char *key) {
- int rc, hash_idx;
- unsigned long outlen = key_sz;
-
- switch(algorithm) {
- case SQLCIPHER_HMAC_SHA1:
- hash_idx = find_hash("sha1");
- break;
- case SQLCIPHER_HMAC_SHA256:
- hash_idx = find_hash("sha256");
- break;
- case SQLCIPHER_HMAC_SHA512:
- hash_idx = find_hash("sha512");
- break;
- default:
- return SQLITE_ERROR;
- }
- if(hash_idx < 0) return SQLITE_ERROR;
-
- if((rc = pkcs_5_alg2(pass, pass_sz, salt, salt_sz,
- workfactor, hash_idx, key, &outlen)) != CRYPT_OK) {
- return SQLITE_ERROR;
- }
- return SQLITE_OK;
-}
-
-static const char* sqlcipher_ltc_get_cipher(void *ctx) {
- return "aes-256-cbc";
-}
-
-static int sqlcipher_ltc_cipher(void *ctx, int mode, unsigned char *key, int key_sz, unsigned char *iv, unsigned char *in, int in_sz, unsigned char *out) {
- int rc, cipher_idx;
- symmetric_CBC cbc;
-
- if((cipher_idx = find_cipher(LTC_CIPHER)) == -1) return SQLITE_ERROR;
- if((rc = cbc_start(cipher_idx, iv, key, key_sz, 0, &cbc)) != CRYPT_OK) return SQLITE_ERROR;
- rc = mode == 1 ? cbc_encrypt(in, out, in_sz, &cbc) : cbc_decrypt(in, out, in_sz, &cbc);
- if(rc != CRYPT_OK) return SQLITE_ERROR;
- cbc_done(&cbc);
- return SQLITE_OK;
-}
-
-static int sqlcipher_ltc_get_key_sz(void *ctx) {
- int cipher_idx = find_cipher(LTC_CIPHER);
- return cipher_descriptor[cipher_idx].max_key_length;
-}
-
-static int sqlcipher_ltc_get_iv_sz(void *ctx) {
- int cipher_idx = find_cipher(LTC_CIPHER);
- return cipher_descriptor[cipher_idx].block_length;
-}
-
-static int sqlcipher_ltc_get_block_sz(void *ctx) {
- int cipher_idx = find_cipher(LTC_CIPHER);
- return cipher_descriptor[cipher_idx].block_length;
-}
-
-static int sqlcipher_ltc_get_hmac_sz(void *ctx, int algorithm) {
- int hash_idx;
- switch(algorithm) {
- case SQLCIPHER_HMAC_SHA1:
- hash_idx = find_hash("sha1");
- break;
- case SQLCIPHER_HMAC_SHA256:
- hash_idx = find_hash("sha256");
- break;
- case SQLCIPHER_HMAC_SHA512:
- hash_idx = find_hash("sha512");
- break;
- default:
- return 0;
- }
-
- if(hash_idx < 0) return 0;
-
- return hash_descriptor[hash_idx].hashsize;
-}
-
-static int sqlcipher_ltc_ctx_init(void **ctx) {
- sqlcipher_ltc_activate(NULL);
- return SQLITE_OK;
-}
-
-static int sqlcipher_ltc_ctx_free(void **ctx) {
- sqlcipher_ltc_deactivate(&ctx);
- return SQLITE_OK;
-}
-
-static int sqlcipher_ltc_fips_status(void *ctx) {
- return 0;
-}
-
-int sqlcipher_ltc_setup(sqlcipher_provider *p) {
- p->activate = sqlcipher_ltc_activate;
- p->deactivate = sqlcipher_ltc_deactivate;
- p->get_provider_name = sqlcipher_ltc_get_provider_name;
- p->random = sqlcipher_ltc_random;
- p->hmac = sqlcipher_ltc_hmac;
- p->kdf = sqlcipher_ltc_kdf;
- p->cipher = sqlcipher_ltc_cipher;
- p->get_cipher = sqlcipher_ltc_get_cipher;
- p->get_key_sz = sqlcipher_ltc_get_key_sz;
- p->get_iv_sz = sqlcipher_ltc_get_iv_sz;
- p->get_block_sz = sqlcipher_ltc_get_block_sz;
- p->get_hmac_sz = sqlcipher_ltc_get_hmac_sz;
- p->ctx_init = sqlcipher_ltc_ctx_init;
- p->ctx_free = sqlcipher_ltc_ctx_free;
- p->add_random = sqlcipher_ltc_add_random;
- p->fips_status = sqlcipher_ltc_fips_status;
- p->get_provider_version = sqlcipher_ltc_get_provider_version;
- return SQLITE_OK;
-}
-
-#endif
-#endif
-/* END SQLCIPHER */
-
-/************** End of crypto_libtomcrypt.c **********************************/
-/************** Begin file crypto_nss.c **************************************/
-/*
-** SQLCipher
-** http://sqlcipher.net
-**
-** Copyright (c) 2008 - 2013, ZETETIC LLC
-** All rights reserved.
-**
-** Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are met:
-** * Redistributions of source code must retain the above copyright
-** notice, this list of conditions and the following disclaimer.
-** * Redistributions in binary form must reproduce the above copyright
-** notice, this list of conditions and the following disclaimer in the
-** documentation and/or other materials provided with the distribution.
-** * Neither the name of the ZETETIC LLC nor the
-** names of its contributors may be used to endorse or promote products
-** derived from this software without specific prior written permission.
-**
-** THIS SOFTWARE IS PROVIDED BY ZETETIC LLC ''AS IS'' AND ANY
-** EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-** DISCLAIMED. IN NO EVENT SHALL ZETETIC LLC BE LIABLE FOR ANY
-** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-**
-*/
-/* BEGIN SQLCIPHER */
-#ifdef SQLITE_HAS_CODEC
-#ifdef SQLCIPHER_CRYPTO_NSS
-/* #include "crypto.h" */
-/* #include "sqlcipher.h" */
-#include
-#include
-#include
-
-static NSSInitContext* nss_init_context = NULL;
-static unsigned int nss_init_count = 0;
-
-int sqlcipher_nss_setup(sqlcipher_provider *p);
-
-static int sqlcipher_nss_activate(void *ctx) {
-
- CODEC_TRACE_MUTEX("sqlcipher_nss_activate: entering SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- sqlite3_mutex_enter(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_ACTIVATE));
- CODEC_TRACE_MUTEX("sqlcipher_nss_activate: entered SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- if (nss_init_context == NULL) {
- nss_init_context = NSS_InitContext("", "", "", "", NULL,
- NSS_INIT_READONLY | NSS_INIT_NOCERTDB | NSS_INIT_NOMODDB |
- NSS_INIT_FORCEOPEN | NSS_INIT_OPTIMIZESPACE | NSS_INIT_NOROOTINIT);
- }
- nss_init_count++;
- CODEC_TRACE_MUTEX("sqlcipher_nss_activate: leaving SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- sqlite3_mutex_leave(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_ACTIVATE));
- CODEC_TRACE_MUTEX("sqlcipher_nss_activate: left SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- return SQLITE_OK;
-}
-
-static int sqlcipher_nss_deactivate(void *ctx) {
- CODEC_TRACE_MUTEX("sqlcipher_nss_activate: entering SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- sqlite3_mutex_enter(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_ACTIVATE));
- CODEC_TRACE_MUTEX("sqlcipher_nss_activate: entered SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
-
- nss_init_count--;
- if (nss_init_count == 0 && nss_init_context != NULL) {
- NSS_ShutdownContext(nss_init_context);
- nss_init_context = NULL;
- }
-
- CODEC_TRACE_MUTEX("sqlcipher_nss_activate: leaving SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- sqlite3_mutex_leave(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_ACTIVATE));
- CODEC_TRACE_MUTEX("sqlcipher_nss_activate: left SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- return SQLITE_OK;
-}
-
-static int sqlcipher_nss_add_random(void *ctx, void *buffer, int length) {
- return SQLITE_OK;
-}
-
-/* generate a defined number of random bytes */
-static int sqlcipher_nss_random (void *ctx, void *buffer, int length) {
- // PK11_GenerateRandom should be thread-safe.
- return (PK11_GenerateRandom((unsigned char *)buffer, length) == SECSuccess) ? SQLITE_OK : SQLITE_ERROR;
-}
-
-static const char* sqlcipher_nss_get_provider_name(void *ctx) {
- return "nss";
-}
-
-static const char* sqlcipher_nss_get_provider_version(void *ctx) {
- return NSS_GetVersion();
-}
-
-static const char* sqlcipher_nss_get_cipher(void *ctx) {
- return "aes-256-cbc";
-}
-
-static int sqlcipher_nss_get_key_sz(void *ctx) {
- return AES_256_KEY_LENGTH;
-}
-
-static int sqlcipher_nss_get_iv_sz(void *ctx) {
- return AES_BLOCK_SIZE;
-}
-
-static int sqlcipher_nss_get_block_sz(void *ctx) {
- return AES_BLOCK_SIZE;
-}
-
-static int sqlcipher_nss_get_hmac_sz(void *ctx, int algorithm) {
- switch(algorithm) {
- case SQLCIPHER_HMAC_SHA1:
- return SHA1_LENGTH;
- break;
- case SQLCIPHER_HMAC_SHA256:
- return SHA256_LENGTH;
- break;
- case SQLCIPHER_HMAC_SHA512:
- return SHA512_LENGTH;
- break;
- default:
- return 0;
- }
-}
-
-static int sqlcipher_nss_hmac(void *ctx, int algorithm, unsigned char *hmac_key, int key_sz, unsigned char *in, int in_sz, unsigned char *in2, int in2_sz, unsigned char *out) {
- int rc = SQLITE_OK;
- unsigned int length;
- unsigned int outLen;
- PK11Context* context = NULL;
- PK11SlotInfo * slot = NULL;
- PK11SymKey* symKey = NULL;
- if(in == NULL) goto error;
- CK_MECHANISM_TYPE mech;
- switch(algorithm) {
- case SQLCIPHER_HMAC_SHA1:
- mech = CKM_SHA_1_HMAC;
- break;
- case SQLCIPHER_HMAC_SHA256:
- mech = CKM_SHA256_HMAC;
- break;
- case SQLCIPHER_HMAC_SHA512:
- mech = CKM_SHA512_HMAC;
- break;
- default:
- goto error;
- }
- length = sqlcipher_nss_get_hmac_sz(ctx, algorithm);
- slot = PK11_GetInternalSlot();
- if (slot == NULL) goto error;
- SECItem keyItem;
- keyItem.data = hmac_key;
- keyItem.len = key_sz;
- symKey = PK11_ImportSymKey(slot, mech, PK11_OriginUnwrap,
- CKA_SIGN, &keyItem, NULL);
- if (symKey == NULL) goto error;
- SECItem noParams;
- noParams.data = 0;
- noParams.len = 0;
- context = PK11_CreateContextBySymKey(mech, CKA_SIGN, symKey, &noParams);
- if (context == NULL) goto error;
- if (PK11_DigestBegin(context) != SECSuccess) goto error;
- if (PK11_DigestOp(context, in, in_sz) != SECSuccess) goto error;
- if (in2 != NULL) {
- if (PK11_DigestOp(context, in2, in2_sz) != SECSuccess) goto error;
- }
- if (PK11_DigestFinal(context, out, &outLen, length) != SECSuccess) goto error;
-
- goto cleanup;
- error:
- rc = SQLITE_ERROR;
- cleanup:
- if (context) PK11_DestroyContext(context, PR_TRUE);
- if (symKey) PK11_FreeSymKey(symKey);
- if (slot) PK11_FreeSlot(slot);
- return rc;
-}
-
-static int sqlcipher_nss_kdf(void *ctx, int algorithm, const unsigned char *pass, int pass_sz, unsigned char* salt, int salt_sz, int workfactor, int key_sz, unsigned char *key) {
- int rc = SQLITE_OK;
- PK11SlotInfo * slot = NULL;
- SECAlgorithmID * algid = NULL;
- PK11SymKey* symKey = NULL;
- SECOidTag oidtag;
- switch(algorithm) {
- case SQLCIPHER_HMAC_SHA1:
- oidtag = SEC_OID_HMAC_SHA1;
- break;
- case SQLCIPHER_HMAC_SHA256:
- oidtag = SEC_OID_HMAC_SHA256;
- break;
- case SQLCIPHER_HMAC_SHA512:
- oidtag = SEC_OID_HMAC_SHA512;
- break;
- default:
- goto error;
- }
- SECItem secSalt;
- secSalt.data = salt;
- secSalt.len = salt_sz;
- // Always pass SEC_OID_HMAC_SHA1 (i.e. PBMAC1) as this parameter
- // is unused for key generation. It is currently only used
- // for PBKDF2 authentication or key (un)wrapping when specifying an
- // encryption algorithm (PBES2).
- algid = PK11_CreatePBEV2AlgorithmID(SEC_OID_PKCS5_PBKDF2, SEC_OID_HMAC_SHA1,
- oidtag, key_sz, workfactor, &secSalt);
- if (algid == NULL) goto error;
- slot = PK11_GetInternalSlot();
- if (slot == NULL) goto error;
- SECItem pwItem;
- pwItem.data = (unsigned char *) pass; // PK11_PBEKeyGen doesn't modify the key.
- pwItem.len = pass_sz;
- symKey = PK11_PBEKeyGen(slot, algid, &pwItem, PR_FALSE, NULL);
- if (symKey == NULL) goto error;
- if (PK11_ExtractKeyValue(symKey) != SECSuccess) goto error;
- // No need to free keyData as it is a buffer managed by symKey.
- SECItem* keyData = PK11_GetKeyData(symKey);
- if (keyData == NULL) goto error;
- memcpy(key, keyData->data, key_sz);
-
- goto cleanup;
- error:
- rc = SQLITE_ERROR;
- cleanup:
- if (slot) PK11_FreeSlot(slot);
- if (algid) SECOID_DestroyAlgorithmID(algid, PR_TRUE);
- if (symKey) PK11_FreeSymKey(symKey);
- return rc;
-}
-
-static int sqlcipher_nss_cipher(void *ctx, int mode, unsigned char *key, int key_sz, unsigned char *iv, unsigned char *in, int in_sz, unsigned char *out) {
- int rc = SQLITE_OK;
- PK11SlotInfo * slot = NULL;
- PK11SymKey* symKey = NULL;
- unsigned int outLen;
- SECItem params;
- params.data = iv;
- params.len = sqlcipher_nss_get_iv_sz(ctx);
- slot = PK11_GetInternalSlot();
- if (slot == NULL) goto error;
- SECItem keyItem;
- keyItem.data = key;
- keyItem.len = key_sz;
- symKey = PK11_ImportSymKey(slot, CKM_AES_CBC, PK11_OriginUnwrap,
- CKA_ENCRYPT, &keyItem, NULL);
- if (symKey == NULL) goto error;
- SECStatus rv;
- if (mode == CIPHER_ENCRYPT) {
- rv = PK11_Encrypt(symKey, CKM_AES_CBC, ¶ms, out, &outLen,
- in_sz + 16, in, in_sz);
- } else {
- rv = PK11_Decrypt(symKey, CKM_AES_CBC, ¶ms, out, &outLen,
- in_sz + 16, in, in_sz);
- }
- if (rv != SECSuccess) goto error;
-
- goto cleanup;
- error:
- rc = SQLITE_ERROR;
- cleanup:
- if (slot) PK11_FreeSlot(slot);
- if (symKey) PK11_FreeSymKey(symKey);
- return rc;
-}
-
-static int sqlcipher_nss_ctx_init(void **ctx) {
- sqlcipher_nss_activate(NULL);
- return SQLITE_OK;
-}
-
-static int sqlcipher_nss_ctx_free(void **ctx) {
- sqlcipher_nss_deactivate(NULL);
- return SQLITE_OK;
-}
-
-static int sqlcipher_nss_fips_status(void *ctx) {
- return 0;
-}
-
-int sqlcipher_nss_setup(sqlcipher_provider *p) {
- p->activate = sqlcipher_nss_activate;
- p->deactivate = sqlcipher_nss_deactivate;
- p->random = sqlcipher_nss_random;
- p->get_provider_name = sqlcipher_nss_get_provider_name;
- p->hmac = sqlcipher_nss_hmac;
- p->kdf = sqlcipher_nss_kdf;
- p->cipher = sqlcipher_nss_cipher;
- p->get_cipher = sqlcipher_nss_get_cipher;
- p->get_key_sz = sqlcipher_nss_get_key_sz;
- p->get_iv_sz = sqlcipher_nss_get_iv_sz;
- p->get_block_sz = sqlcipher_nss_get_block_sz;
- p->get_hmac_sz = sqlcipher_nss_get_hmac_sz;
- p->ctx_init = sqlcipher_nss_ctx_init;
- p->ctx_free = sqlcipher_nss_ctx_free;
- p->add_random = sqlcipher_nss_add_random;
- p->fips_status = sqlcipher_nss_fips_status;
- p->get_provider_version = sqlcipher_nss_get_provider_version;
- return SQLITE_OK;
-}
-
-#endif
-#endif
-/* END SQLCIPHER */
-
-/************** End of crypto_nss.c ******************************************/
-/************** Begin file crypto_openssl.c **********************************/
-/*
-** SQLCipher
-** http://sqlcipher.net
-**
-** Copyright (c) 2008 - 2013, ZETETIC LLC
-** All rights reserved.
-**
-** Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are met:
-** * Redistributions of source code must retain the above copyright
-** notice, this list of conditions and the following disclaimer.
-** * Redistributions in binary form must reproduce the above copyright
-** notice, this list of conditions and the following disclaimer in the
-** documentation and/or other materials provided with the distribution.
-** * Neither the name of the ZETETIC LLC nor the
-** names of its contributors may be used to endorse or promote products
-** derived from this software without specific prior written permission.
-**
-** THIS SOFTWARE IS PROVIDED BY ZETETIC LLC ''AS IS'' AND ANY
-** EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-** DISCLAIMED. IN NO EVENT SHALL ZETETIC LLC BE LIABLE FOR ANY
-** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-**
-*/
-/* BEGIN SQLCIPHER */
-#ifdef SQLITE_HAS_CODEC
-#ifdef SQLCIPHER_CRYPTO_OPENSSL
-/* #include "sqliteInt.h" */
-/* #include "crypto.h" */
-/* #include "sqlcipher.h" */
-#include
-#include
-#include
-#include
-#include
-
-#if defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x10000000L
-// HMAC_* functions returned void before 87d52468aa600e02326e13f01331e1f3b8602ed0
-#define HMAC_Init_ex_(...) (HMAC_Init_ex(__VA_ARGS__), 1)
-#define HMAC_Update_(...) (HMAC_Update(__VA_ARGS__), 1)
-#define HMAC_Final_(...) (HMAC_Final(__VA_ARGS__), 1)
-#else
-#define HMAC_Init_ex_(...) HMAC_Init_ex(__VA_ARGS__)
-#define HMAC_Update_(...) HMAC_Update(__VA_ARGS__)
-#define HMAC_Final_(...) HMAC_Final(__VA_ARGS__)
-#endif
-
-typedef struct {
- EVP_CIPHER *evp_cipher;
-} openssl_ctx;
-
-static unsigned int openssl_external_init = 0;
-static unsigned int openssl_init_count = 0;
-
-#if (defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x10100000L) || (defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x20700000L)
-static HMAC_CTX *HMAC_CTX_new(void)
-{
- HMAC_CTX *ctx = OPENSSL_malloc(sizeof(*ctx));
- if (ctx != NULL) {
- HMAC_CTX_init(ctx);
- }
- return ctx;
-}
-
-/* Per 1.1.0 (https://wiki.openssl.org/index.php/1.1_API_Changes)
- HMAC_CTX_free should call HMAC_CTX_cleanup, then EVP_MD_CTX_Cleanup.
- HMAC_CTX_cleanup internally calls EVP_MD_CTX_cleanup so these
- calls are not needed. */
-static void HMAC_CTX_free(HMAC_CTX *ctx)
-{
- if (ctx != NULL) {
- HMAC_CTX_cleanup(ctx);
- OPENSSL_free(ctx);
- }
-}
-#endif
-
-static int sqlcipher_openssl_add_random(void *ctx, void *buffer, int length) {
-#ifndef SQLCIPHER_OPENSSL_NO_MUTEX_RAND
- CODEC_TRACE_MUTEX("sqlcipher_openssl_add_random: entering SQLCIPHER_MUTEX_PROVIDER_RAND\n");
- sqlite3_mutex_enter(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_RAND));
- CODEC_TRACE_MUTEX("sqlcipher_openssl_add_random: entered SQLCIPHER_MUTEX_PROVIDER_RAND\n");
-#endif
- RAND_add(buffer, length, 0);
-#ifndef SQLCIPHER_OPENSSL_NO_MUTEX_RAND
- CODEC_TRACE_MUTEX("sqlcipher_openssl_add_random: leaving SQLCIPHER_MUTEX_PROVIDER_RAND\n");
- sqlite3_mutex_leave(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_RAND));
- CODEC_TRACE_MUTEX("sqlcipher_openssl_add_random: left SQLCIPHER_MUTEX_PROVIDER_RAND\n");
-#endif
- return SQLITE_OK;
-}
-
-#define OPENSSL_CIPHER "aes-256-cbc"
-
-
-/* activate and initialize sqlcipher. Most importantly, this will automatically
- intialize OpenSSL's EVP system if it hasn't already be externally. Note that
- this function may be called multiple times as new codecs are intiialized.
- Thus it performs some basic counting to ensure that only the last and final
- sqlcipher_openssl_deactivate() will free the EVP structures.
-*/
-static int sqlcipher_openssl_activate(void *ctx) {
- /* initialize openssl and increment the internal init counter
- but only if it hasn't been initalized outside of SQLCipher by this program
- e.g. on startup */
-
- CODEC_TRACE_MUTEX("sqlcipher_openssl_activate: entering SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- sqlite3_mutex_enter(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_ACTIVATE));
- CODEC_TRACE_MUTEX("sqlcipher_openssl_activate: entered SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
-
- if(openssl_init_count == 0 && EVP_get_cipherbyname(OPENSSL_CIPHER) != NULL) {
- /* if openssl has not yet been initialized by this library, but
- a call to get_cipherbyname works, then the openssl library
- has been initialized externally already. */
- openssl_external_init = 1;
- }
-
-#ifdef SQLCIPHER_FIPS
- if(!FIPS_mode()){
- if(!FIPS_mode_set(1)){
- unsigned long err = 0;
- ERR_load_crypto_strings();
-#ifdef __ANDROID__
- while((err = ERR_get_error()) != 0) {
- __android_log_print(ANDROID_LOG_ERROR, "sqlcipher","error: %lx. %s.", err, ERR_error_string(err, NULL));
- }
-#else
- ERR_print_errors_fp(stderr);
-#endif
- }
- }
-#endif
-
- if(openssl_init_count == 0 && openssl_external_init == 0) {
- /* if the library was not externally initialized, then should be now */
-#if (defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x10100000L) || (defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x20700000L)
- OpenSSL_add_all_algorithms();
-#endif
- }
-
- openssl_init_count++;
- CODEC_TRACE_MUTEX("sqlcipher_openssl_activate: leaving SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- sqlite3_mutex_leave(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_ACTIVATE));
- CODEC_TRACE_MUTEX("sqlcipher_openssl_activate: left SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- return SQLITE_OK;
-}
-
-/* deactivate SQLCipher, most imporantly decremeting the activation count and
- freeing the EVP structures on the final deactivation to ensure that
- OpenSSL memory is cleaned up */
-static int sqlcipher_openssl_deactivate(void *ctx) {
- CODEC_TRACE_MUTEX("sqlcipher_openssl_deactivate: entering SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- sqlite3_mutex_enter(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_ACTIVATE));
- CODEC_TRACE_MUTEX("sqlcipher_openssl_deactivate: entered SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- openssl_init_count--;
-
- if(openssl_init_count == 0) {
- if(openssl_external_init == 0) {
- /* if OpenSSL hasn't be initialized externally, and the counter reaches zero
- after it's decremented, release EVP memory
- Note: this code will only be reached if OpensSSL_add_all_algorithms()
- is called by SQLCipher internally. This should prevent SQLCipher from
- "cleaning up" openssl when it was initialized externally by the program */
-#if (defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x10100000L) || (defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x20700000L)
- EVP_cleanup();
-#endif
- } else {
- openssl_external_init = 0;
- }
- }
-
- CODEC_TRACE_MUTEX("sqlcipher_openssl_deactivate: leaving SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- sqlite3_mutex_leave(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_ACTIVATE));
- CODEC_TRACE_MUTEX("sqlcipher_openssl_deactivate: left SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
- return SQLITE_OK;
-}
-
-static const char* sqlcipher_openssl_get_provider_name(void *ctx) {
- return "openssl";
-}
-
-static const char* sqlcipher_openssl_get_provider_version(void *ctx) {
- return OPENSSL_VERSION_TEXT;
-}
-
-/* generate a defined number of random bytes */
-static int sqlcipher_openssl_random (void *ctx, void *buffer, int length) {
- int rc = 0;
- /* concurrent calls to RAND_bytes can cause a crash under some openssl versions when a
- naive application doesn't use CRYPTO_set_locking_callback and
- CRYPTO_THREADID_set_callback to ensure openssl thread safety.
- This is simple workaround to prevent this common crash
- but a more proper solution is that applications setup platform-appropriate
- thread saftey in openssl externally */
-#ifndef SQLCIPHER_OPENSSL_NO_MUTEX_RAND
- CODEC_TRACE_MUTEX("sqlcipher_openssl_random: entering SQLCIPHER_MUTEX_PROVIDER_RAND\n");
- sqlite3_mutex_enter(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_RAND));
- CODEC_TRACE_MUTEX("sqlcipher_openssl_random: entered SQLCIPHER_MUTEX_PROVIDER_RAND\n");
-#endif
- rc = RAND_bytes((unsigned char *)buffer, length);
-#ifndef SQLCIPHER_OPENSSL_NO_MUTEX_RAND
- CODEC_TRACE_MUTEX("sqlcipher_openssl_random: leaving SQLCIPHER_MUTEX_PROVIDER_RAND\n");
- sqlite3_mutex_leave(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_RAND));
- CODEC_TRACE_MUTEX("sqlcipher_openssl_random: left SQLCIPHER_MUTEX_PROVIDER_RAND\n");
-#endif
- return (rc == 1) ? SQLITE_OK : SQLITE_ERROR;
-}
-
-static int sqlcipher_openssl_hmac(void *ctx, int algorithm, unsigned char *hmac_key, int key_sz, unsigned char *in, int in_sz, unsigned char *in2, int in2_sz, unsigned char *out) {
- unsigned int outlen;
- int rc = SQLITE_OK;
- HMAC_CTX* hctx = NULL;
-
- if(in == NULL) goto error;
-
- hctx = HMAC_CTX_new();
- if(hctx == NULL) goto error;
-
- switch(algorithm) {
- case SQLCIPHER_HMAC_SHA1:
- if(!HMAC_Init_ex_(hctx, hmac_key, key_sz, EVP_sha1(), NULL)) goto error;
- break;
- case SQLCIPHER_HMAC_SHA256:
- if(!HMAC_Init_ex_(hctx, hmac_key, key_sz, EVP_sha256(), NULL)) goto error;
- break;
- case SQLCIPHER_HMAC_SHA512:
- if(!HMAC_Init_ex_(hctx, hmac_key, key_sz, EVP_sha512(), NULL)) goto error;
- break;
- default:
- goto error;
- }
-
- if(!HMAC_Update_(hctx, in, in_sz)) goto error;
- if(in2 != NULL) {
- if(!HMAC_Update_(hctx, in2, in2_sz)) goto error;
- }
- if(!HMAC_Final_(hctx, out, &outlen)) goto error;
-
- goto cleanup;
-error:
- rc = SQLITE_ERROR;
-cleanup:
- if(hctx) HMAC_CTX_free(hctx);
- return rc;
-}
-
-static int sqlcipher_openssl_kdf(void *ctx, int algorithm, const unsigned char *pass, int pass_sz, unsigned char* salt, int salt_sz, int workfactor, int key_sz, unsigned char *key) {
- int rc = SQLITE_OK;
-
-#if defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x10000000L
-// PKCS5_PBKDF2_HMAC was added in 856640b54f3d22a34d6565e9c78c441a15222577 and added to the header only in 777c47acbeecf9602cc465864c9f5f2c609c989d,
-// so use PKCS5_PBKDF2_HMAC_SHA1 unconditionally if OpenSSL < 1.0.0
- if(!PKCS5_PBKDF2_HMAC_SHA1((const char *)pass, pass_sz, salt, salt_sz, workfactor, key_sz, key)) goto error;
-#else
- switch(algorithm) {
- case SQLCIPHER_HMAC_SHA1:
- if(!PKCS5_PBKDF2_HMAC((const char *)pass, pass_sz, salt, salt_sz, workfactor, EVP_sha1(), key_sz, key)) goto error;
- break;
- case SQLCIPHER_HMAC_SHA256:
- if(!PKCS5_PBKDF2_HMAC((const char *)pass, pass_sz, salt, salt_sz, workfactor, EVP_sha256(), key_sz, key)) goto error;
- break;
- case SQLCIPHER_HMAC_SHA512:
- if(!PKCS5_PBKDF2_HMAC((const char *)pass, pass_sz, salt, salt_sz, workfactor, EVP_sha512(), key_sz, key)) goto error;
- break;
- default:
- return SQLITE_ERROR;
- }
-#endif
-
- goto cleanup;
-error:
- rc = SQLITE_ERROR;
-cleanup:
- return rc;
-}
-
-static int sqlcipher_openssl_cipher(void *ctx, int mode, unsigned char *key, int key_sz, unsigned char *iv, unsigned char *in, int in_sz, unsigned char *out) {
- int tmp_csz, csz, rc = SQLITE_OK;
- EVP_CIPHER_CTX* ectx = EVP_CIPHER_CTX_new();
- if(ectx == NULL) goto error;
- if(!EVP_CipherInit_ex(ectx, ((openssl_ctx *)ctx)->evp_cipher, NULL, NULL, NULL, mode)) goto error;
- if(!EVP_CIPHER_CTX_set_padding(ectx, 0)) goto error; /* no padding */
- if(!EVP_CipherInit_ex(ectx, NULL, NULL, key, iv, mode)) goto error;
- if(!EVP_CipherUpdate(ectx, out, &tmp_csz, in, in_sz)) goto error;
- csz = tmp_csz;
- out += tmp_csz;
- if(!EVP_CipherFinal_ex(ectx, out, &tmp_csz)) goto error;
- csz += tmp_csz;
- assert(in_sz == csz);
-
- goto cleanup;
-error:
- rc = SQLITE_ERROR;
-cleanup:
- if(ectx) EVP_CIPHER_CTX_free(ectx);
- return rc;
-}
-
-static const char* sqlcipher_openssl_get_cipher(void *ctx) {
- return OBJ_nid2sn(EVP_CIPHER_nid(((openssl_ctx *)ctx)->evp_cipher));
-}
-
-static int sqlcipher_openssl_get_key_sz(void *ctx) {
- return EVP_CIPHER_key_length(((openssl_ctx *)ctx)->evp_cipher);
-}
-
-static int sqlcipher_openssl_get_iv_sz(void *ctx) {
- return EVP_CIPHER_iv_length(((openssl_ctx *)ctx)->evp_cipher);
-}
-
-static int sqlcipher_openssl_get_block_sz(void *ctx) {
- return EVP_CIPHER_block_size(((openssl_ctx *)ctx)->evp_cipher);
-}
-
-static int sqlcipher_openssl_get_hmac_sz(void *ctx, int algorithm) {
- switch(algorithm) {
- case SQLCIPHER_HMAC_SHA1:
- return EVP_MD_size(EVP_sha1());
- break;
- case SQLCIPHER_HMAC_SHA256:
- return EVP_MD_size(EVP_sha256());
- break;
- case SQLCIPHER_HMAC_SHA512:
- return EVP_MD_size(EVP_sha512());
- break;
- default:
- return 0;
- }
-}
-
-static int sqlcipher_openssl_ctx_init(void **ctx) {
- openssl_ctx *o_ctx;
-
- *ctx = sqlcipher_malloc(sizeof(openssl_ctx));
- if(*ctx == NULL) return SQLITE_NOMEM;
- sqlcipher_openssl_activate(*ctx);
-
- o_ctx = (openssl_ctx *)*ctx;
- o_ctx->evp_cipher = (EVP_CIPHER *) EVP_get_cipherbyname(OPENSSL_CIPHER);
- return o_ctx->evp_cipher != NULL ? SQLITE_OK : SQLITE_ERROR;
-}
-
-static int sqlcipher_openssl_ctx_free(void **ctx) {
- sqlcipher_openssl_deactivate(*ctx);
- sqlcipher_free(*ctx, sizeof(openssl_ctx));
- return SQLITE_OK;
-}
-
-static int sqlcipher_openssl_fips_status(void *ctx) {
-#ifdef SQLCIPHER_FIPS
- return FIPS_mode();
-#else
- return 0;
-#endif
-}
-
-int sqlcipher_openssl_setup(sqlcipher_provider *p) {
- p->activate = sqlcipher_openssl_activate;
- p->deactivate = sqlcipher_openssl_deactivate;
- p->get_provider_name = sqlcipher_openssl_get_provider_name;
- p->random = sqlcipher_openssl_random;
- p->hmac = sqlcipher_openssl_hmac;
- p->kdf = sqlcipher_openssl_kdf;
- p->cipher = sqlcipher_openssl_cipher;
- p->get_cipher = sqlcipher_openssl_get_cipher;
- p->get_key_sz = sqlcipher_openssl_get_key_sz;
- p->get_iv_sz = sqlcipher_openssl_get_iv_sz;
- p->get_block_sz = sqlcipher_openssl_get_block_sz;
- p->get_hmac_sz = sqlcipher_openssl_get_hmac_sz;
- p->ctx_init = sqlcipher_openssl_ctx_init;
- p->ctx_free = sqlcipher_openssl_ctx_free;
- p->add_random = sqlcipher_openssl_add_random;
- p->fips_status = sqlcipher_openssl_fips_status;
- p->get_provider_version = sqlcipher_openssl_get_provider_version;
- return SQLITE_OK;
-}
-
-#endif
-#endif
-/* END SQLCIPHER */
-
-/************** End of crypto_openssl.c **************************************/
-/************** Begin file crypto_cc.c ***************************************/
-/*
-** SQLCipher
-** http://sqlcipher.net
-**
-** Copyright (c) 2008 - 2013, ZETETIC LLC
-** All rights reserved.
-**
-** Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are met:
-** * Redistributions of source code must retain the above copyright
-** notice, this list of conditions and the following disclaimer.
-** * Redistributions in binary form must reproduce the above copyright
-** notice, this list of conditions and the following disclaimer in the
-** documentation and/or other materials provided with the distribution.
-** * Neither the name of the ZETETIC LLC nor the
-** names of its contributors may be used to endorse or promote products
-** derived from this software without specific prior written permission.
-**
-** THIS SOFTWARE IS PROVIDED BY ZETETIC LLC ''AS IS'' AND ANY
-** EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-** DISCLAIMED. IN NO EVENT SHALL ZETETIC LLC BE LIABLE FOR ANY
-** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-**
-*/
-/* BEGIN SQLCIPHER */
-#ifdef SQLITE_HAS_CODEC
-#ifdef SQLCIPHER_CRYPTO_CC
-/* #include "crypto.h" */
-/* #include "sqlcipher.h" */
-#include
-#include
-#include
-
-int sqlcipher_cc_setup(sqlcipher_provider *p);
-
-static int sqlcipher_cc_add_random(void *ctx, void *buffer, int length) {
- return SQLITE_OK;
-}
-
-/* generate a defined number of random bytes */
-static int sqlcipher_cc_random (void *ctx, void *buffer, int length) {
- return (SecRandomCopyBytes(kSecRandomDefault, length, (uint8_t *)buffer) == kCCSuccess) ? SQLITE_OK : SQLITE_ERROR;
-}
-
-static const char* sqlcipher_cc_get_provider_name(void *ctx) {
- return "commoncrypto";
-}
-
-static const char* sqlcipher_cc_get_provider_version(void *ctx) {
-#if TARGET_OS_MAC
- CFTypeRef version;
- CFBundleRef bundle = CFBundleGetBundleWithIdentifier(CFSTR("com.apple.security"));
- if(bundle == NULL) {
- return "unknown";
- }
- version = CFBundleGetValueForInfoDictionaryKey(bundle, CFSTR("CFBundleShortVersionString"));
- return CFStringGetCStringPtr(version, kCFStringEncodingUTF8);
-#else
- return "unknown";
-#endif
-}
-
-static int sqlcipher_cc_hmac(void *ctx, int algorithm, unsigned char *hmac_key, int key_sz, unsigned char *in, int in_sz, unsigned char *in2, int in2_sz, unsigned char *out) {
- CCHmacContext hmac_context;
- if(in == NULL) return SQLITE_ERROR;
- switch(algorithm) {
- case SQLCIPHER_HMAC_SHA1:
- CCHmacInit(&hmac_context, kCCHmacAlgSHA1, hmac_key, key_sz);
- break;
- case SQLCIPHER_HMAC_SHA256:
- CCHmacInit(&hmac_context, kCCHmacAlgSHA256, hmac_key, key_sz);
- break;
- case SQLCIPHER_HMAC_SHA512:
- CCHmacInit(&hmac_context, kCCHmacAlgSHA512, hmac_key, key_sz);
- break;
- default:
- return SQLITE_ERROR;
- }
- CCHmacUpdate(&hmac_context, in, in_sz);
- if(in2 != NULL) CCHmacUpdate(&hmac_context, in2, in2_sz);
- CCHmacFinal(&hmac_context, out);
- return SQLITE_OK;
-}
-
-static int sqlcipher_cc_kdf(void *ctx, int algorithm, const unsigned char *pass, int pass_sz, unsigned char* salt, int salt_sz, int workfactor, int key_sz, unsigned char *key) {
- switch(algorithm) {
- case SQLCIPHER_HMAC_SHA1:
- if(CCKeyDerivationPBKDF(kCCPBKDF2, (const char *)pass, pass_sz, salt, salt_sz, kCCPRFHmacAlgSHA1, workfactor, key, key_sz) != kCCSuccess) return SQLITE_ERROR;
- break;
- case SQLCIPHER_HMAC_SHA256:
- if(CCKeyDerivationPBKDF(kCCPBKDF2, (const char *)pass, pass_sz, salt, salt_sz, kCCPRFHmacAlgSHA256, workfactor, key, key_sz) != kCCSuccess) return SQLITE_ERROR;
- break;
- case SQLCIPHER_HMAC_SHA512:
- if(CCKeyDerivationPBKDF(kCCPBKDF2, (const char *)pass, pass_sz, salt, salt_sz, kCCPRFHmacAlgSHA512, workfactor, key, key_sz) != kCCSuccess) return SQLITE_ERROR;
- break;
- default:
- return SQLITE_ERROR;
- }
- return SQLITE_OK;
-}
-
-static int sqlcipher_cc_cipher(void *ctx, int mode, unsigned char *key, int key_sz, unsigned char *iv, unsigned char *in, int in_sz, unsigned char *out) {
- CCCryptorRef cryptor;
- size_t tmp_csz, csz;
- CCOperation op = mode == CIPHER_ENCRYPT ? kCCEncrypt : kCCDecrypt;
-
- if(CCCryptorCreate(op, kCCAlgorithmAES128, 0, key, kCCKeySizeAES256, iv, &cryptor) != kCCSuccess) return SQLITE_ERROR;
- if(CCCryptorUpdate(cryptor, in, in_sz, out, in_sz, &tmp_csz) != kCCSuccess) return SQLITE_ERROR;
- csz = tmp_csz;
- out += tmp_csz;
- if(CCCryptorFinal(cryptor, out, in_sz - csz, &tmp_csz) != kCCSuccess) return SQLITE_ERROR;
- csz += tmp_csz;
- if(CCCryptorRelease(cryptor) != kCCSuccess) return SQLITE_ERROR;
- assert(in_sz == csz);
-
- return SQLITE_OK;
-}
-
-static const char* sqlcipher_cc_get_cipher(void *ctx) {
- return "aes-256-cbc";
-}
-
-static int sqlcipher_cc_get_key_sz(void *ctx) {
- return kCCKeySizeAES256;
-}
-
-static int sqlcipher_cc_get_iv_sz(void *ctx) {
- return kCCBlockSizeAES128;
-}
-
-static int sqlcipher_cc_get_block_sz(void *ctx) {
- return kCCBlockSizeAES128;
-}
-
-static int sqlcipher_cc_get_hmac_sz(void *ctx, int algorithm) {
- switch(algorithm) {
- case SQLCIPHER_HMAC_SHA1:
- return CC_SHA1_DIGEST_LENGTH;
- break;
- case SQLCIPHER_HMAC_SHA256:
- return CC_SHA256_DIGEST_LENGTH;
- break;
- case SQLCIPHER_HMAC_SHA512:
- return CC_SHA512_DIGEST_LENGTH;
- break;
- default:
- return 0;
- }
-}
-
-static int sqlcipher_cc_ctx_init(void **ctx) {
- return SQLITE_OK;
-}
-
-static int sqlcipher_cc_ctx_free(void **ctx) {
- return SQLITE_OK;
-}
-
-static int sqlcipher_cc_fips_status(void *ctx) {
- return 0;
-}
-
-int sqlcipher_cc_setup(sqlcipher_provider *p) {
- p->random = sqlcipher_cc_random;
- p->get_provider_name = sqlcipher_cc_get_provider_name;
- p->hmac = sqlcipher_cc_hmac;
- p->kdf = sqlcipher_cc_kdf;
- p->cipher = sqlcipher_cc_cipher;
- p->get_cipher = sqlcipher_cc_get_cipher;
- p->get_key_sz = sqlcipher_cc_get_key_sz;
- p->get_iv_sz = sqlcipher_cc_get_iv_sz;
- p->get_block_sz = sqlcipher_cc_get_block_sz;
- p->get_hmac_sz = sqlcipher_cc_get_hmac_sz;
- p->ctx_init = sqlcipher_cc_ctx_init;
- p->ctx_free = sqlcipher_cc_ctx_free;
- p->add_random = sqlcipher_cc_add_random;
- p->fips_status = sqlcipher_cc_fips_status;
- p->get_provider_version = sqlcipher_cc_get_provider_version;
- return SQLITE_OK;
-}
-
-#endif
-#endif
-/* END SQLCIPHER */
-
-/************** End of crypto_cc.c *******************************************/
/************** Begin file global.c ******************************************/
/*
** 2008 June 13
@@ -24978,7 +20383,7 @@ int sqlcipher_cc_setup(sqlcipher_provider *p) {
/* #include "sqliteInt.h" */
/* An array to map all upper-case characters into their corresponding
-** lower-case character.
+** lower-case character.
**
** SQLite only considers US-ASCII (or EBCDIC) characters. We do not
** handle case conversions for the UTF character set since the tables
@@ -25045,12 +20450,11 @@ SQLITE_PRIVATE const unsigned char sqlite3UpperToLower[] = {
** The equivalent of tolower() is implemented using the sqlite3UpperToLower[]
** array. tolower() is used more often than toupper() by SQLite.
**
-** Bit 0x40 is set if the character is non-alphanumeric and can be used in an
+** Bit 0x40 is set if the character is non-alphanumeric and can be used in an
** SQLite identifier. Identifiers are alphanumerics, "_", "$", and any
** non-ASCII UTF character. Hence the test for whether or not a character is
** part of an identifier is 0x46.
*/
-#ifdef SQLITE_ASCII
SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00..07 ........ */
0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, /* 08..0f ........ */
@@ -25088,7 +20492,6 @@ SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = {
0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* f0..f7 ........ */
0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40 /* f8..ff ........ */
};
-#endif
/* EVIDENCE-OF: R-02982-34736 In order to maintain full backwards
** compatibility for legacy applications, the URI filename capability is
@@ -25100,16 +20503,9 @@ SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = {
** EVIDENCE-OF: R-43642-56306 By default, URI handling is globally
** disabled. The default value may be changed by compiling with the
** SQLITE_USE_URI symbol defined.
-**
-** URI filenames are enabled by default if SQLITE_HAS_CODEC is
-** enabled.
*/
#ifndef SQLITE_USE_URI
-# ifdef SQLITE_HAS_CODEC
-# define SQLITE_USE_URI 1
-# else
-# define SQLITE_USE_URI 0
-# endif
+# define SQLITE_USE_URI 0
#endif
/* EVIDENCE-OF: R-38720-18127 The default setting is determined by the
@@ -25119,7 +20515,7 @@ SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = {
#if !defined(SQLITE_ALLOW_COVERING_INDEX_SCAN)
# define SQLITE_ALLOW_COVERING_INDEX_SCAN 1
#else
-# if !SQLITE_ALLOW_COVERING_INDEX_SCAN
+# if !SQLITE_ALLOW_COVERING_INDEX_SCAN
# error "Compile-time disabling of covering index scan using the\
-DSQLITE_ALLOW_COVERING_INDEX_SCAN=0 option is deprecated.\
Contact SQLite developers if this is a problem for you, and\
@@ -25142,7 +20538,7 @@ SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = {
** if journal_mode=MEMORY or if temp_store=MEMORY, regardless of this
** setting.)
*/
-#ifndef SQLITE_STMTJRNL_SPILL
+#ifndef SQLITE_STMTJRNL_SPILL
# define SQLITE_STMTJRNL_SPILL (64*1024)
#endif
@@ -25153,9 +20549,18 @@ SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = {
** changed as start-time using sqlite3_config(SQLITE_CONFIG_LOOKASIDE)
** or at run-time for an individual database connection using
** sqlite3_db_config(db, SQLITE_DBCONFIG_LOOKASIDE);
+**
+** With the two-size-lookaside enhancement, less lookaside is required.
+** The default configuration of 1200,40 actually provides 30 1200-byte slots
+** and 93 128-byte slots, which is more lookaside than is available
+** using the older 1200,100 configuration without two-size-lookaside.
*/
#ifndef SQLITE_DEFAULT_LOOKASIDE
-# define SQLITE_DEFAULT_LOOKASIDE 1200,100
+# ifdef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+# define SQLITE_DEFAULT_LOOKASIDE 1200,100 /* 120KB of memory */
+# else
+# define SQLITE_DEFAULT_LOOKASIDE 1200,40 /* 48KB of memory */
+# endif
#endif
@@ -25221,7 +20626,6 @@ SQLITE_PRIVATE SQLITE_WSD struct Sqlite3Config sqlite3Config = {
0, /* xTestCallback */
#endif
0, /* bLocaltimeFault */
- 0, /* bInternalFunctions */
0x7ffffffe, /* iOnceResetThreshold */
SQLITE_DEFAULT_SORTERREF_SIZE, /* szSorterRef */
0, /* iPrngSeed */
@@ -25264,12 +20668,17 @@ SQLITE_PRIVATE sqlite3_uint64 sqlite3NProfileCnt = 0;
SQLITE_PRIVATE int sqlite3PendingByte = 0x40000000;
#endif
+/*
+** Flags for select tracing and the ".selecttrace" macro of the CLI
+*/
+SQLITE_API u32 sqlite3_unsupported_selecttrace = 0;
+
/* #include "opcodes.h" */
/*
** Properties of opcodes. The OPFLG_INITIALIZER macro is
** created by mkopcodeh.awk during compilation. Data is obtained
** from the comments following the "case OP_xxxx:" statements in
-** the vdbe.c file.
+** the vdbe.c file.
*/
SQLITE_PRIVATE const unsigned char sqlite3OpcodeProperty[] = OPFLG_INITIALIZER;
@@ -25331,7 +20740,8 @@ SQLITE_PRIVATE const char sqlite3StrBINARY[] = "BINARY";
** "explain" P4 display logic is enabled.
*/
#if !defined(SQLITE_OMIT_EXPLAIN) || !defined(NDEBUG) \
- || defined(VDBE_PROFILE) || defined(SQLITE_DEBUG)
+ || defined(VDBE_PROFILE) || defined(SQLITE_DEBUG) \
+ || defined(SQLITE_ENABLE_BYTECODE_VTAB)
# define VDBE_DISPLAY_P4 1
#else
# define VDBE_DISPLAY_P4 0
@@ -25388,7 +20798,7 @@ struct VdbeCursor {
Bool seekHit:1; /* See the OP_SeekHit and OP_IfNoHope opcodes */
Btree *pBtx; /* Separate file holding temporary table */
i64 seqCount; /* Sequence counter */
- int *aAltMap; /* Mapping from table to index column numbers */
+ u32 *aAltMap; /* Mapping from table to index column numbers */
/* Cached OP_Column parse information is only valid if cacheStatus matches
** Vdbe.cacheCtr. Vdbe.cacheCtr will never take on the value of
@@ -25440,7 +20850,7 @@ struct VdbeCursor {
** When a sub-program is executed (OP_Program), a structure of this type
** is allocated to store the current value of the program counter, as
** well as the current memory cell array and various other frame specific
-** values stored in the Vdbe struct. When the sub-program is finished,
+** values stored in the Vdbe struct. When the sub-program is finished,
** these values are copied back to the Vdbe from the VdbeFrame structure,
** restoring the state of the VM to as it was before the sub-program
** began executing.
@@ -25537,7 +20947,7 @@ struct sqlite3_value {
** If the MEM_Str flag is set then Mem.z points at a string representation.
** Usually this is encoded in the same unicode encoding as the main
** database (see below for exceptions). If the MEM_Term flag is also
-** set, then the string is nul terminated. The MEM_Int and MEM_Real
+** set, then the string is nul terminated. The MEM_Int and MEM_Real
** flags may coexist with the MEM_Str flag.
*/
#define MEM_Null 0x0001 /* Value is NULL (or a pointer) */
@@ -25598,7 +21008,7 @@ struct sqlite3_value {
#endif
/*
-** Each auxiliary data pointer stored by a user defined function
+** Each auxiliary data pointer stored by a user defined function
** implementation calling sqlite3_set_auxdata() is stored in an instance
** of this structure. All such structures associated with a single VM
** are stored in a linked list headed at Vdbe.pAuxData. All are destroyed
@@ -25718,9 +21128,9 @@ struct Vdbe {
u8 errorAction; /* Recovery action to do in case of an error */
u8 minWriteFileFormat; /* Minimum file format for writable database files */
u8 prepFlags; /* SQLITE_PREPARE_* flags */
+ u8 doingRerun; /* True if rerunning after an auto-reprepare */
bft expired:2; /* 1: recompile VM immediately 2: when convenient */
bft explain:2; /* True if EXPLAIN present on SQL command */
- bft doingRerun:1; /* True if rerunning after an auto-reprepare */
bft changeCntOn:1; /* True to update the change-counter */
bft runOnlyOnce:1; /* Automatically expire on reset */
bft usesStmtJournal:1; /* True if uses a statement journal */
@@ -25758,7 +21168,7 @@ struct Vdbe {
#define VDBE_MAGIC_DEAD 0x5606c3c8 /* The VDBE has been deallocated */
/*
-** Structure used to store the context required by the
+** Structure used to store the context required by the
** sqlite3_preupdate_*() API functions.
*/
struct PreUpdate {
@@ -25773,7 +21183,7 @@ struct PreUpdate {
i64 iKey1; /* First key value passed to hook */
i64 iKey2; /* Second key value passed to hook */
Mem *aNew; /* Array of new.* values */
- Table *pTab; /* Schema object being upated */
+ Table *pTab; /* Schema object being upated */
Index *pPk; /* PK index if pTab is WITHOUT ROWID */
};
@@ -25783,7 +21193,8 @@ struct PreUpdate {
SQLITE_PRIVATE void sqlite3VdbeError(Vdbe*, const char *, ...);
SQLITE_PRIVATE void sqlite3VdbeFreeCursor(Vdbe *, VdbeCursor*);
void sqliteVdbePopStack(Vdbe*,int);
-SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor**, int*);
+SQLITE_PRIVATE int SQLITE_NOINLINE sqlite3VdbeFinishMoveto(VdbeCursor*);
+SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor**, u32*);
SQLITE_PRIVATE int sqlite3VdbeCursorRestore(VdbeCursor*);
SQLITE_PRIVATE u32 sqlite3VdbeSerialTypeLen(u32);
SQLITE_PRIVATE u8 sqlite3VdbeOneByteSerialTypeLen(u8);
@@ -25795,7 +21206,14 @@ int sqlite2BtreeKeyCompare(BtCursor *, const void *, int, int, int *);
SQLITE_PRIVATE int sqlite3VdbeIdxKeyCompare(sqlite3*,VdbeCursor*,UnpackedRecord*,int*);
SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3*, BtCursor*, i64*);
SQLITE_PRIVATE int sqlite3VdbeExec(Vdbe*);
-#ifndef SQLITE_OMIT_EXPLAIN
+#if !defined(SQLITE_OMIT_EXPLAIN) || defined(SQLITE_ENABLE_BYTECODE_VTAB)
+SQLITE_PRIVATE int sqlite3VdbeNextOpcode(Vdbe*,Mem*,int,int*,int*,Op**);
+SQLITE_PRIVATE char *sqlite3VdbeDisplayP4(sqlite3*,Op*);
+#endif
+#if defined(SQLITE_ENABLE_EXPLAIN_COMMENTS)
+SQLITE_PRIVATE char *sqlite3VdbeDisplayComment(sqlite3*,const Op*,const char*);
+#endif
+#if !defined(SQLITE_OMIT_EXPLAIN)
SQLITE_PRIVATE int sqlite3VdbeList(Vdbe*);
#endif
SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe*);
@@ -25829,14 +21247,15 @@ SQLITE_PRIVATE int sqlite3VdbeBooleanValue(Mem*, int ifNull);
SQLITE_PRIVATE void sqlite3VdbeIntegerAffinity(Mem*);
SQLITE_PRIVATE int sqlite3VdbeMemRealify(Mem*);
SQLITE_PRIVATE int sqlite3VdbeMemNumerify(Mem*);
-SQLITE_PRIVATE void sqlite3VdbeMemCast(Mem*,u8,u8);
+SQLITE_PRIVATE int sqlite3VdbeMemCast(Mem*,u8,u8);
SQLITE_PRIVATE int sqlite3VdbeMemFromBtree(BtCursor*,u32,u32,Mem*);
+SQLITE_PRIVATE int sqlite3VdbeMemFromBtreeZeroOffset(BtCursor*,u32,Mem*);
SQLITE_PRIVATE void sqlite3VdbeMemRelease(Mem *p);
SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem*, FuncDef*);
#ifndef SQLITE_OMIT_WINDOWFUNC
SQLITE_PRIVATE int sqlite3VdbeMemAggValue(Mem*, Mem*, FuncDef*);
#endif
-#ifndef SQLITE_OMIT_EXPLAIN
+#if !defined(SQLITE_OMIT_EXPLAIN) || defined(SQLITE_ENABLE_BYTECODE_VTAB)
SQLITE_PRIVATE const char *sqlite3OpcodeName(int);
#endif
SQLITE_PRIVATE int sqlite3VdbeMemGrow(Mem *pMem, int n, int preserve);
@@ -25870,7 +21289,7 @@ SQLITE_PRIVATE void sqlite3VdbeAssertAbortable(Vdbe*);
# define sqlite3VdbeAssertAbortable(V)
#endif
-#if !defined(SQLITE_OMIT_SHARED_CACHE)
+#if !defined(SQLITE_OMIT_SHARED_CACHE)
SQLITE_PRIVATE void sqlite3VdbeEnter(Vdbe*);
#else
# define sqlite3VdbeEnter(X)
@@ -25895,7 +21314,7 @@ SQLITE_PRIVATE int sqlite3VdbeCheckFk(Vdbe *, int);
#ifdef SQLITE_DEBUG
SQLITE_PRIVATE void sqlite3VdbePrintSql(Vdbe*);
-SQLITE_PRIVATE void sqlite3VdbeMemPrettyPrint(Mem *pMem, char *zBuf);
+SQLITE_PRIVATE void sqlite3VdbeMemPrettyPrint(Mem *pMem, StrAccum *pStr);
#endif
#ifndef SQLITE_OMIT_UTF16
SQLITE_PRIVATE int sqlite3VdbeMemTranslate(Mem*, u8);
@@ -26087,6 +21506,10 @@ static u32 countLookasideSlots(LookasideSlot *p){
SQLITE_PRIVATE int sqlite3LookasideUsed(sqlite3 *db, int *pHighwater){
u32 nInit = countLookasideSlots(db->lookaside.pInit);
u32 nFree = countLookasideSlots(db->lookaside.pFree);
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+ nInit += countLookasideSlots(db->lookaside.pSmallInit);
+ nFree += countLookasideSlots(db->lookaside.pSmallFree);
+#endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */
if( pHighwater ) *pHighwater = db->lookaside.nSlot - nInit;
return db->lookaside.nSlot - (nInit+nFree);
}
@@ -26119,6 +21542,15 @@ SQLITE_API int sqlite3_db_status(
db->lookaside.pInit = db->lookaside.pFree;
db->lookaside.pFree = 0;
}
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+ p = db->lookaside.pSmallFree;
+ if( p ){
+ while( p->pNext ) p = p->pNext;
+ p->pNext = db->lookaside.pSmallInit;
+ db->lookaside.pSmallInit = db->lookaside.pSmallFree;
+ db->lookaside.pSmallFree = 0;
+ }
+#endif
}
break;
}
@@ -26139,7 +21571,7 @@ SQLITE_API int sqlite3_db_status(
break;
}
- /*
+ /*
** Return an approximation for the amount of memory currently used
** by all pagers associated with the given database connection. The
** highwater mark is meaningless and is returned as zero.
@@ -26183,7 +21615,7 @@ SQLITE_API int sqlite3_db_status(
HashElem *p;
nByte += sqlite3GlobalConfig.m.xRoundup(sizeof(HashElem)) * (
- pSchema->tblHash.count
+ pSchema->tblHash.count
+ pSchema->trigHash.count
+ pSchema->idxHash.count
+ pSchema->fkeyHash.count
@@ -26233,12 +21665,12 @@ SQLITE_API int sqlite3_db_status(
/*
** Set *pCurrent to the total cache hits or misses encountered by all
- ** pagers the database handle is connected to. *pHighwater is always set
+ ** pagers the database handle is connected to. *pHighwater is always set
** to zero.
*/
case SQLITE_DBSTATUS_CACHE_SPILL:
op = SQLITE_DBSTATUS_CACHE_WRITE+1;
- /* Fall through into the next case */
+ /* no break */ deliberate_fall_through
case SQLITE_DBSTATUS_CACHE_HIT:
case SQLITE_DBSTATUS_CACHE_MISS:
case SQLITE_DBSTATUS_CACHE_WRITE:{
@@ -26292,7 +21724,7 @@ SQLITE_API int sqlite3_db_status(
**
*************************************************************************
** This file contains the C functions that implement date and time
-** functions for SQLite.
+** functions for SQLite.
**
** There is only one exported symbol in this file - the function
** sqlite3RegisterDateTimeFunctions() found at the bottom of the file.
@@ -26301,7 +21733,7 @@ SQLITE_API int sqlite3_db_status(
** SQLite processes all times and dates as julian day numbers. The
** dates and times are stored as the number of days since noon
** in Greenwich on November 24, 4714 B.C. according to the Gregorian
-** calendar system.
+** calendar system.
**
** 1970-01-01 00:00:00 is JD 2440587.5
** 2000-01-01 00:00:00 is JD 2451544.5
@@ -26649,7 +22081,7 @@ static void setRawDateNumber(DateTime *p, double r){
** The following are acceptable forms for the input string:
**
** YYYY-MM-DD HH:MM:SS.FFF +/-HH:MM
-** DDDD.DD
+** DDDD.DD
** now
**
** In the first form, the +/-HH:MM is always optional. The fractional
@@ -26659,8 +22091,8 @@ static void setRawDateNumber(DateTime *p, double r){
** as there is a year and date.
*/
static int parseDateOrTime(
- sqlite3_context *context,
- const char *zDate,
+ sqlite3_context *context,
+ const char *zDate,
DateTime *p
){
double r;
@@ -26681,7 +22113,7 @@ static int parseDateOrTime(
** Multiplying this by 86400000 gives 464269060799999 as the maximum value
** for DateTime.iJD.
**
-** But some older compilers (ex: gcc 4.2.1 on older Macs) cannot deal with
+** But some older compilers (ex: gcc 4.2.1 on older Macs) cannot deal with
** such a large integer literal, so we have to encode it.
*/
#define INT_464269060799999 ((((i64)0x1a640)<<32)|0x1072fdff)
@@ -26763,14 +22195,14 @@ static void clearYMD_HMS_TZ(DateTime *p){
#ifndef SQLITE_OMIT_LOCALTIME
/*
** On recent Windows platforms, the localtime_s() function is available
-** as part of the "Secure CRT". It is essentially equivalent to
-** localtime_r() available under most POSIX platforms, except that the
+** as part of the "Secure CRT". It is essentially equivalent to
+** localtime_r() available under most POSIX platforms, except that the
** order of the parameters is reversed.
**
** See http://msdn.microsoft.com/en-us/library/a442x3ye(VS.80).aspx.
**
** If the user has not indicated to use localtime_r() or localtime_s()
-** already, check for an MSVC build environment that provides
+** already, check for an MSVC build environment that provides
** localtime_s().
*/
#if !HAVE_LOCALTIME_R && !HAVE_LOCALTIME_S \
@@ -26797,7 +22229,7 @@ static int osLocaltime(time_t *t, struct tm *pTm){
#if !HAVE_LOCALTIME_R && !HAVE_LOCALTIME_S
struct tm *pX;
#if SQLITE_THREADSAFE>0
- sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+ sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN);
#endif
sqlite3_mutex_enter(mutex);
pX = localtime(t);
@@ -26826,7 +22258,7 @@ static int osLocaltime(time_t *t, struct tm *pTm){
/*
** Compute the difference (in milliseconds) between localtime and UTC
** (a.k.a. GMT) for the time value p where p is in UTC. If no error occurs,
-** return this value and set *pRc to SQLITE_OK.
+** return this value and set *pRc to SQLITE_OK.
**
** Or, if an error does occur, set *pRc to SQLITE_ERROR. The returned value
** is undefined in this case.
@@ -26903,12 +22335,12 @@ static const struct {
double rLimit; /* Maximum NNN value for this transform */
double rXform; /* Constant used for this transform */
} aXformType[] = {
- { 0, 6, "second", 464269060800.0, 86400000.0/(24.0*60.0*60.0) },
- { 0, 6, "minute", 7737817680.0, 86400000.0/(24.0*60.0) },
- { 0, 4, "hour", 128963628.0, 86400000.0/24.0 },
- { 0, 3, "day", 5373485.0, 86400000.0 },
- { 1, 5, "month", 176546.0, 30.0*86400000.0 },
- { 2, 4, "year", 14713.0, 365.0*86400000.0 },
+ { 0, 6, "second", 464269060800.0, 1000.0 },
+ { 0, 6, "minute", 7737817680.0, 60000.0 },
+ { 0, 4, "hour", 128963628.0, 3600000.0 },
+ { 0, 3, "day", 5373485.0, 86400000.0 },
+ { 1, 5, "month", 176546.0, 2592000000.0 },
+ { 2, 4, "year", 14713.0, 31536000000.0 },
};
/*
@@ -26970,7 +22402,7 @@ static int parseModifier(
r = p->s*1000.0 + 210866760000000.0;
if( r>=0.0 && r<464269060800000.0 ){
clearYMD_HMS_TZ(p);
- p->iJD = (sqlite3_int64)r;
+ p->iJD = (sqlite3_int64)(r + 0.5);
p->validJD = 1;
p->rawS = 0;
rc = 0;
@@ -27153,9 +22585,9 @@ static int parseModifier(
** then assume a default value of "now" for argv[0].
*/
static int isDate(
- sqlite3_context *context,
- int argc,
- sqlite3_value **argv,
+ sqlite3_context *context,
+ int argc,
+ sqlite3_value **argv,
DateTime *p
){
int i, n;
@@ -27394,8 +22826,8 @@ static void strftimeFunc(
case 'm': sqlite3_snprintf(3, &z[j],"%02d",x.M); j+=2; break;
case 'M': sqlite3_snprintf(3, &z[j],"%02d",x.m); j+=2; break;
case 's': {
- sqlite3_snprintf(30,&z[j],"%lld",
- (i64)(x.iJD/1000 - 21086676*(i64)10000));
+ i64 iS = (i64)(x.iJD/1000 - 21086676*(i64)10000);
+ sqlite3Int64ToText(iS, &z[j]);
j += sqlite3Strlen30(&z[j]);
break;
}
@@ -27493,10 +22925,10 @@ static void currentTimeFunc(
#if HAVE_GMTIME_R
pTm = gmtime_r(&t, &sNow);
#else
- sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
+ sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN));
pTm = gmtime(&t);
if( pTm ) memcpy(&sNow, pTm, sizeof(sNow));
- sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
+ sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN));
#endif
if( pTm ){
strftime(zBuf, 20, zFormat, &sNow);
@@ -27749,7 +23181,7 @@ SQLITE_PRIVATE int sqlite3OsOpen(
** down into the VFS layer. Some SQLITE_OPEN_ flags (for example,
** SQLITE_OPEN_FULLMUTEX or SQLITE_OPEN_SHAREDCACHE) are blocked before
** reaching the VFS. */
- rc = pVfs->xOpen(pVfs, zPath, pFile, flags & 0x87f7f, pFlagsOut);
+ rc = pVfs->xOpen(pVfs, zPath, pFile, flags & 0x1087f7f, pFlagsOut);
assert( rc==SQLITE_OK || pFile->pMethods==0 );
return rc;
}
@@ -27800,7 +23232,7 @@ SQLITE_PRIVATE int sqlite3OsRandomness(sqlite3_vfs *pVfs, int nByte, char *zBufO
}else{
return pVfs->xRandomness(pVfs, nByte, zBufOut);
}
-
+
}
SQLITE_PRIVATE int sqlite3OsSleep(sqlite3_vfs *pVfs, int nMicro){
return pVfs->xSleep(pVfs, nMicro);
@@ -27887,7 +23319,7 @@ SQLITE_API sqlite3_vfs *sqlite3_vfs_find(const char *zVfs){
if( rc ) return 0;
#endif
#if SQLITE_THREADSAFE
- mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+ mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN);
#endif
sqlite3_mutex_enter(mutex);
for(pVfs = vfsList; pVfs; pVfs=pVfs->pNext){
@@ -27902,7 +23334,7 @@ SQLITE_API sqlite3_vfs *sqlite3_vfs_find(const char *zVfs){
** Unlink a VFS from the linked list
*/
static void vfsUnlink(sqlite3_vfs *pVfs){
- assert( sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)) );
+ assert( sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN)) );
if( pVfs==0 ){
/* No-op */
}else if( vfsList==pVfs ){
@@ -27933,7 +23365,7 @@ SQLITE_API int sqlite3_vfs_register(sqlite3_vfs *pVfs, int makeDflt){
if( pVfs==0 ) return SQLITE_MISUSE_BKPT;
#endif
- MUTEX_LOGIC( mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
+ MUTEX_LOGIC( mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); )
sqlite3_mutex_enter(mutex);
vfsUnlink(pVfs);
if( makeDflt || vfsList==0 ){
@@ -27957,7 +23389,7 @@ SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs *pVfs){
int rc = sqlite3_initialize();
if( rc ) return rc;
#endif
- MUTEX_LOGIC( mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
+ MUTEX_LOGIC( mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); )
sqlite3_mutex_enter(mutex);
vfsUnlink(pVfs);
sqlite3_mutex_leave(mutex);
@@ -27978,17 +23410,17 @@ SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs *pVfs){
**
*************************************************************************
**
-** This file contains code to support the concept of "benign"
+** This file contains code to support the concept of "benign"
** malloc failures (when the xMalloc() or xRealloc() method of the
** sqlite3_mem_methods structure fails to allocate a block of memory
-** and returns 0).
+** and returns 0).
**
** Most malloc failures are non-benign. After they occur, SQLite
** abandons the current operation and returns an error code (usually
** SQLITE_NOMEM) to the user. However, sometimes a fault is not necessarily
-** fatal. For example, if a malloc fails while resizing a hash table, this
-** is completely recoverable simply by not carrying out the resize. The
-** hash table will continue to function normally. So a malloc failure
+** fatal. For example, if a malloc fails while resizing a hash table, this
+** is completely recoverable simply by not carrying out the resize. The
+** hash table will continue to function normally. So a malloc failure
** during a hash table resize is a benign fault.
*/
@@ -28190,7 +23622,7 @@ static malloc_zone_t* _sqliteZone_;
#else /* if not __APPLE__ */
/*
-** Use standard C library malloc and free on non-Apple systems.
+** Use standard C library malloc and free on non-Apple systems.
** Also used by Apple systems if SQLITE_WITHOUT_ZONEMALLOC is defined.
*/
#define SQLITE_MALLOC(x) malloc(x)
@@ -28370,7 +23802,7 @@ static int sqlite3MemInit(void *NotUsed){
/* defer MT decisions to system malloc */
_sqliteZone_ = malloc_default_zone();
}else{
- /* only 1 core, use our own zone to contention over global locks,
+ /* only 1 core, use our own zone to contention over global locks,
** e.g. we have our own dedicated locks */
_sqliteZone_ = malloc_create_zone(4096, 0);
malloc_set_zone_name(_sqliteZone_, "Sqlite_Heap");
@@ -28494,7 +23926,7 @@ struct MemBlockHdr {
** when this module is combined with other in the amalgamation.
*/
static struct {
-
+
/*
** Mutex to control access to the memory allocation subsystem.
*/
@@ -28505,7 +23937,7 @@ static struct {
*/
struct MemBlockHdr *pFirst;
struct MemBlockHdr *pLast;
-
+
/*
** The number of levels of backtrace to save in new allocations.
*/
@@ -28518,7 +23950,7 @@ static struct {
int nTitle; /* Bytes of zTitle to save. Includes '\0' and padding */
char zTitle[100]; /* The title text */
- /*
+ /*
** sqlite3MallocDisallow() increments the following counter.
** sqlite3MallocAllow() decrements it.
*/
@@ -28577,7 +24009,7 @@ static struct MemBlockHdr *sqlite3MemsysGetHeader(void *pAllocation){
pU8 = (u8*)pAllocation;
assert( pInt[nReserve/sizeof(int)]==(int)REARGUARD );
/* This checks any of the "extra" bytes allocated due
- ** to rounding up to an 8 byte boundary to ensure
+ ** to rounding up to an 8 byte boundary to ensure
** they haven't been overwritten.
*/
while( nReserve-- > p->iSize ) assert( pU8[nReserve]==0x65 );
@@ -28706,7 +24138,7 @@ static void *sqlite3MemMalloc(int nByte){
p = (void*)pInt;
}
sqlite3_mutex_leave(mem.mutex);
- return p;
+ return p;
}
/*
@@ -28716,7 +24148,7 @@ static void sqlite3MemFree(void *pPrior){
struct MemBlockHdr *pHdr;
void **pBt;
char *z;
- assert( sqlite3GlobalConfig.bMemstat || sqlite3GlobalConfig.bCoreMutex==0
+ assert( sqlite3GlobalConfig.bMemstat || sqlite3GlobalConfig.bCoreMutex==0
|| mem.mutex!=0 );
pHdr = sqlite3MemsysGetHeader(pPrior);
pBt = (void**)pHdr;
@@ -28742,15 +24174,15 @@ static void sqlite3MemFree(void *pPrior){
randomFill(z, sizeof(void*)*pHdr->nBacktraceSlots + sizeof(*pHdr) +
(int)pHdr->iSize + sizeof(int) + pHdr->nTitle);
free(z);
- sqlite3_mutex_leave(mem.mutex);
+ sqlite3_mutex_leave(mem.mutex);
}
/*
** Change the size of an existing memory allocation.
**
** For this debugging implementation, we *always* make a copy of the
-** allocation into a new place in memory. In this way, if the
-** higher level code is using pointer to the old allocation, it is
+** allocation into a new place in memory. In this way, if the
+** higher level code is using pointer to the old allocation, it is
** much more likely to break and we are much more liking to find
** the error.
*/
@@ -28793,7 +24225,7 @@ SQLITE_PRIVATE void sqlite3MemSetDefault(void){
** Set the "type" of an allocation.
*/
SQLITE_PRIVATE void sqlite3MemdebugSetType(void *p, u8 eType){
- if( p && sqlite3GlobalConfig.m.xMalloc==sqlite3MemMalloc ){
+ if( p && sqlite3GlobalConfig.m.xFree==sqlite3MemFree ){
struct MemBlockHdr *pHdr;
pHdr = sqlite3MemsysGetHeader(p);
assert( pHdr->iForeGuard==FOREGUARD );
@@ -28812,7 +24244,7 @@ SQLITE_PRIVATE void sqlite3MemdebugSetType(void *p, u8 eType){
*/
SQLITE_PRIVATE int sqlite3MemdebugHasType(void *p, u8 eType){
int rc = 1;
- if( p && sqlite3GlobalConfig.m.xMalloc==sqlite3MemMalloc ){
+ if( p && sqlite3GlobalConfig.m.xFree==sqlite3MemFree ){
struct MemBlockHdr *pHdr;
pHdr = sqlite3MemsysGetHeader(p);
assert( pHdr->iForeGuard==FOREGUARD ); /* Allocation is valid */
@@ -28834,7 +24266,7 @@ SQLITE_PRIVATE int sqlite3MemdebugHasType(void *p, u8 eType){
*/
SQLITE_PRIVATE int sqlite3MemdebugNoType(void *p, u8 eType){
int rc = 1;
- if( p && sqlite3GlobalConfig.m.xMalloc==sqlite3MemMalloc ){
+ if( p && sqlite3GlobalConfig.m.xFree==sqlite3MemFree ){
struct MemBlockHdr *pHdr;
pHdr = sqlite3MemsysGetHeader(p);
assert( pHdr->iForeGuard==FOREGUARD ); /* Allocation is valid */
@@ -28884,7 +24316,7 @@ SQLITE_PRIVATE void sqlite3MemdebugSync(){
}
/*
-** Open the file indicated and write a log of all unfreed memory
+** Open the file indicated and write a log of all unfreed memory
** allocations into that log.
*/
SQLITE_PRIVATE void sqlite3MemdebugDump(const char *zFilename){
@@ -28901,7 +24333,7 @@ SQLITE_PRIVATE void sqlite3MemdebugDump(const char *zFilename){
for(pHdr=mem.pFirst; pHdr; pHdr=pHdr->pNext){
char *z = (char*)pHdr;
z -= pHdr->nBacktraceSlots*sizeof(void*) + pHdr->nTitle;
- fprintf(out, "**** %lld bytes at %p from %s ****\n",
+ fprintf(out, "**** %lld bytes at %p from %s ****\n",
pHdr->iSize, &pHdr[1], pHdr->nTitle ? z : "???");
if( pHdr->nBacktrace ){
fflush(out);
@@ -28914,7 +24346,7 @@ SQLITE_PRIVATE void sqlite3MemdebugDump(const char *zFilename){
fprintf(out, "COUNTS:\n");
for(i=0; i=nBlock );
- if( nBlock>=mem3.szMaster-1 ){
- /* Use the entire master */
- void *p = memsys3Checkout(mem3.iMaster, mem3.szMaster);
- mem3.iMaster = 0;
- mem3.szMaster = 0;
- mem3.mnMaster = 0;
+ assert( mem3.szKeyBlk>=nBlock );
+ if( nBlock>=mem3.szKeyBlk-1 ){
+ /* Use the entire key chunk */
+ void *p = memsys3Checkout(mem3.iKeyBlk, mem3.szKeyBlk);
+ mem3.iKeyBlk = 0;
+ mem3.szKeyBlk = 0;
+ mem3.mnKeyBlk = 0;
return p;
}else{
- /* Split the master block. Return the tail. */
+ /* Split the key block. Return the tail. */
u32 newi, x;
- newi = mem3.iMaster + mem3.szMaster - nBlock;
- assert( newi > mem3.iMaster+1 );
- mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.prevSize = nBlock;
- mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.size4x |= 2;
+ newi = mem3.iKeyBlk + mem3.szKeyBlk - nBlock;
+ assert( newi > mem3.iKeyBlk+1 );
+ mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.prevSize = nBlock;
+ mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.size4x |= 2;
mem3.aPool[newi-1].u.hdr.size4x = nBlock*4 + 1;
- mem3.szMaster -= nBlock;
- mem3.aPool[newi-1].u.hdr.prevSize = mem3.szMaster;
- x = mem3.aPool[mem3.iMaster-1].u.hdr.size4x & 2;
- mem3.aPool[mem3.iMaster-1].u.hdr.size4x = mem3.szMaster*4 | x;
- if( mem3.szMaster < mem3.mnMaster ){
- mem3.mnMaster = mem3.szMaster;
+ mem3.szKeyBlk -= nBlock;
+ mem3.aPool[newi-1].u.hdr.prevSize = mem3.szKeyBlk;
+ x = mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x & 2;
+ mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x = mem3.szKeyBlk*4 | x;
+ if( mem3.szKeyBlk < mem3.mnKeyBlk ){
+ mem3.mnKeyBlk = mem3.szKeyBlk;
}
return (void*)&mem3.aPool[newi];
}
@@ -29244,18 +24676,18 @@ static void *memsys3FromMaster(u32 nBlock){
/*
** *pRoot is the head of a list of free chunks of the same size
** or same size hash. In other words, *pRoot is an entry in either
-** mem3.aiSmall[] or mem3.aiHash[].
+** mem3.aiSmall[] or mem3.aiHash[].
**
** This routine examines all entries on the given list and tries
-** to coalesce each entries with adjacent free chunks.
+** to coalesce each entries with adjacent free chunks.
**
-** If it sees a chunk that is larger than mem3.iMaster, it replaces
-** the current mem3.iMaster with the new larger chunk. In order for
-** this mem3.iMaster replacement to work, the master chunk must be
+** If it sees a chunk that is larger than mem3.iKeyBlk, it replaces
+** the current mem3.iKeyBlk with the new larger chunk. In order for
+** this mem3.iKeyBlk replacement to work, the key chunk must be
** linked into the hash tables. That is not the normal state of
-** affairs, of course. The calling routine must link the master
+** affairs, of course. The calling routine must link the key
** chunk before invoking this routine, then must unlink the (possibly
-** changed) master chunk once this routine has finished.
+** changed) key chunk once this routine has finished.
*/
static void memsys3Merge(u32 *pRoot){
u32 iNext, prev, size, i, x;
@@ -29282,9 +24714,9 @@ static void memsys3Merge(u32 *pRoot){
}else{
size /= 4;
}
- if( size>mem3.szMaster ){
- mem3.iMaster = i;
- mem3.szMaster = size;
+ if( size>mem3.szKeyBlk ){
+ mem3.iKeyBlk = i;
+ mem3.szKeyBlk = size;
}
}
}
@@ -29333,26 +24765,26 @@ static void *memsys3MallocUnsafe(int nByte){
/* STEP 2:
** Try to satisfy the allocation by carving a piece off of the end
- ** of the master chunk. This step usually works if step 1 fails.
+ ** of the key chunk. This step usually works if step 1 fails.
*/
- if( mem3.szMaster>=nBlock ){
- return memsys3FromMaster(nBlock);
+ if( mem3.szKeyBlk>=nBlock ){
+ return memsys3FromKeyBlk(nBlock);
}
- /* STEP 3:
+ /* STEP 3:
** Loop through the entire memory pool. Coalesce adjacent free
- ** chunks. Recompute the master chunk as the largest free chunk.
+ ** chunks. Recompute the key chunk as the largest free chunk.
** Then try again to satisfy the allocation by carving a piece off
- ** of the end of the master chunk. This step happens very
+ ** of the end of the key chunk. This step happens very
** rarely (we hope!)
*/
for(toFree=nBlock*16; toFree<(mem3.nPool*16); toFree *= 2){
memsys3OutOfMemory(toFree);
- if( mem3.iMaster ){
- memsys3Link(mem3.iMaster);
- mem3.iMaster = 0;
- mem3.szMaster = 0;
+ if( mem3.iKeyBlk ){
+ memsys3Link(mem3.iKeyBlk);
+ mem3.iKeyBlk = 0;
+ mem3.szKeyBlk = 0;
}
for(i=0; i=nBlock ){
- return memsys3FromMaster(nBlock);
+ if( mem3.szKeyBlk ){
+ memsys3Unlink(mem3.iKeyBlk);
+ if( mem3.szKeyBlk>=nBlock ){
+ return memsys3FromKeyBlk(nBlock);
}
}
}
@@ -29393,23 +24825,23 @@ static void memsys3FreeUnsafe(void *pOld){
mem3.aPool[i+size-1].u.hdr.size4x &= ~2;
memsys3Link(i);
- /* Try to expand the master using the newly freed chunk */
- if( mem3.iMaster ){
- while( (mem3.aPool[mem3.iMaster-1].u.hdr.size4x&2)==0 ){
- size = mem3.aPool[mem3.iMaster-1].u.hdr.prevSize;
- mem3.iMaster -= size;
- mem3.szMaster += size;
- memsys3Unlink(mem3.iMaster);
- x = mem3.aPool[mem3.iMaster-1].u.hdr.size4x & 2;
- mem3.aPool[mem3.iMaster-1].u.hdr.size4x = mem3.szMaster*4 | x;
- mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.prevSize = mem3.szMaster;
+ /* Try to expand the key using the newly freed chunk */
+ if( mem3.iKeyBlk ){
+ while( (mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x&2)==0 ){
+ size = mem3.aPool[mem3.iKeyBlk-1].u.hdr.prevSize;
+ mem3.iKeyBlk -= size;
+ mem3.szKeyBlk += size;
+ memsys3Unlink(mem3.iKeyBlk);
+ x = mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x & 2;
+ mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x = mem3.szKeyBlk*4 | x;
+ mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.prevSize = mem3.szKeyBlk;
}
- x = mem3.aPool[mem3.iMaster-1].u.hdr.size4x & 2;
- while( (mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.size4x&1)==0 ){
- memsys3Unlink(mem3.iMaster+mem3.szMaster);
- mem3.szMaster += mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.size4x/4;
- mem3.aPool[mem3.iMaster-1].u.hdr.size4x = mem3.szMaster*4 | x;
- mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.prevSize = mem3.szMaster;
+ x = mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x & 2;
+ while( (mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.size4x&1)==0 ){
+ memsys3Unlink(mem3.iKeyBlk+mem3.szKeyBlk);
+ mem3.szKeyBlk += mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.size4x/4;
+ mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x = mem3.szKeyBlk*4 | x;
+ mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.prevSize = mem3.szKeyBlk;
}
}
}
@@ -29447,7 +24879,7 @@ static void *memsys3Malloc(int nBytes){
memsys3Enter();
p = memsys3MallocUnsafe(nBytes);
memsys3Leave();
- return (void*)p;
+ return (void*)p;
}
/*
@@ -29505,11 +24937,11 @@ static int memsys3Init(void *NotUsed){
mem3.aPool = (Mem3Block *)sqlite3GlobalConfig.pHeap;
mem3.nPool = (sqlite3GlobalConfig.nHeap / sizeof(Mem3Block)) - 2;
- /* Initialize the master block. */
- mem3.szMaster = mem3.nPool;
- mem3.mnMaster = mem3.szMaster;
- mem3.iMaster = 1;
- mem3.aPool[0].u.hdr.size4x = (mem3.szMaster<<2) + 2;
+ /* Initialize the key block. */
+ mem3.szKeyBlk = mem3.nPool;
+ mem3.mnKeyBlk = mem3.szKeyBlk;
+ mem3.iKeyBlk = 1;
+ mem3.aPool[0].u.hdr.size4x = (mem3.szKeyBlk<<2) + 2;
mem3.aPool[mem3.nPool].u.hdr.prevSize = mem3.nPool;
mem3.aPool[mem3.nPool].u.hdr.size4x = 1;
@@ -29528,7 +24960,7 @@ static void memsys3Shutdown(void *NotUsed){
/*
-** Open the file indicated and write a log of all unfreed memory
+** Open the file indicated and write a log of all unfreed memory
** allocations into that log.
*/
SQLITE_PRIVATE void sqlite3Memsys3Dump(const char *zFilename){
@@ -29569,7 +25001,7 @@ SQLITE_PRIVATE void sqlite3Memsys3Dump(const char *zFilename){
fprintf(out, "%p %6d bytes checked out\n", &mem3.aPool[i], (size/4)*8-8);
}else{
fprintf(out, "%p %6d bytes free%s\n", &mem3.aPool[i], (size/4)*8-8,
- i==mem3.iMaster ? " **master**" : "");
+ i==mem3.iKeyBlk ? " **key**" : "");
}
}
for(i=0; i= M*(1 + log2(n)/2) - n + 1
@@ -29686,7 +25118,7 @@ SQLITE_PRIVATE const sqlite3_mem_methods *sqlite3MemGetMemsys3(void){
/* #include "sqliteInt.h" */
/*
-** This version of the memory allocator is used only when
+** This version of the memory allocator is used only when
** SQLITE_ENABLE_MEMSYS5 is defined.
*/
#ifdef SQLITE_ENABLE_MEMSYS5
@@ -29731,7 +25163,7 @@ static SQLITE_WSD struct Mem5Global {
int szAtom; /* Smallest possible allocation in bytes */
int nBlock; /* Number of szAtom sized blocks in zPool */
u8 *zPool; /* Memory available to be allocated */
-
+
/*
** Mutex to control access to the memory allocation subsystem.
*/
@@ -29750,7 +25182,7 @@ static SQLITE_WSD struct Mem5Global {
u32 maxCount; /* Maximum instantaneous currentCount */
u32 maxRequest; /* Largest allocation (exclusive of internal frag) */
#endif
-
+
/*
** Lists of free blocks. aiFreelist[0] is a list of free blocks of
** size mem5.szAtom. aiFreelist[1] holds blocks of size szAtom*2.
@@ -29926,7 +25358,7 @@ static void memsys5FreeUnsafe(void *pOld){
u32 size, iLogsize;
int iBlock;
- /* Set iBlock to the index of the block pointed to by pOld in
+ /* Set iBlock to the index of the block pointed to by pOld in
** the array of mem5.szAtom byte blocks pointed to by mem5.zPool.
*/
iBlock = (int)(((u8 *)pOld-mem5.zPool)/mem5.szAtom);
@@ -29995,7 +25427,7 @@ static void *memsys5Malloc(int nBytes){
p = memsys5MallocUnsafe(nBytes);
memsys5Leave();
}
- return (void*)p;
+ return (void*)p;
}
/*
@@ -30008,14 +25440,14 @@ static void memsys5Free(void *pPrior){
assert( pPrior!=0 );
memsys5Enter();
memsys5FreeUnsafe(pPrior);
- memsys5Leave();
+ memsys5Leave();
}
/*
** Change the size of an existing memory allocation.
**
** The outer layer memory allocator prevents this routine from
-** being called with pPrior==0.
+** being called with pPrior==0.
**
** nBytes is always a value obtained from a prior call to
** memsys5Round(). Hence nBytes is always a non-negative power
@@ -30148,7 +25580,7 @@ static void memsys5Shutdown(void *NotUsed){
#ifdef SQLITE_TEST
/*
-** Open the file indicated and write a log of all unfreed memory
+** Open the file indicated and write a log of all unfreed memory
** allocations into that log.
*/
SQLITE_PRIVATE void sqlite3Memsys5Dump(const char *zFilename){
@@ -30190,7 +25622,7 @@ SQLITE_PRIVATE void sqlite3Memsys5Dump(const char *zFilename){
#endif
/*
-** This routine is the only routine in this file with external
+** This routine is the only routine in this file with external
** linkage. It returns a pointer to a static sqlite3_mem_methods
** struct populated with the memsys5 methods.
*/
@@ -30245,7 +25677,7 @@ static SQLITE_WSD int mutexIsInit = 0;
/*
** This block (enclosed by SQLITE_ENABLE_MULTITHREADED_CHECKS) contains
** the implementation of a wrapper around the system default mutex
-** implementation (sqlite3DefaultMutex()).
+** implementation (sqlite3DefaultMutex()).
**
** Most calls are passed directly through to the underlying default
** mutex implementation. Except, if a mutex is configured by calling
@@ -30256,7 +25688,7 @@ static SQLITE_WSD int mutexIsInit = 0;
** apps that usually use SQLITE_CONFIG_MULTITHREAD mode.
*/
-/*
+/*
** Type for all mutexes used when SQLITE_ENABLE_MULTITHREADED_CHECKS
** is defined. Variable CheckMutex.mutex is a pointer to the real mutex
** allocated by the system mutex implementation. Variable iType is usually set
@@ -30273,9 +25705,9 @@ struct CheckMutex {
#define SQLITE_MUTEX_WARNONCONTENTION (-1)
-/*
+/*
** Pointer to real mutex methods object used by the CheckMutex
-** implementation. Set by checkMutexInit().
+** implementation. Set by checkMutexInit().
*/
static SQLITE_WSD const sqlite3_mutex_methods *pGlobalMutexMethods;
@@ -30291,13 +25723,13 @@ static int checkMutexNotheld(sqlite3_mutex *p){
/*
** Initialize and deinitialize the mutex subsystem.
*/
-static int checkMutexInit(void){
+static int checkMutexInit(void){
pGlobalMutexMethods = sqlite3DefaultMutex();
- return SQLITE_OK;
+ return SQLITE_OK;
}
-static int checkMutexEnd(void){
+static int checkMutexEnd(void){
pGlobalMutexMethods = 0;
- return SQLITE_OK;
+ return SQLITE_OK;
}
/*
@@ -30371,7 +25803,7 @@ static void checkMutexEnter(sqlite3_mutex *p){
if( SQLITE_OK==pGlobalMutexMethods->xMutexTry(pCheck->mutex) ){
return;
}
- sqlite3_log(SQLITE_MISUSE,
+ sqlite3_log(SQLITE_MISUSE,
"illegal multi-threaded access to database connection"
);
}
@@ -30430,11 +25862,11 @@ SQLITE_PRIVATE void sqlite3MutexWarnOnContention(sqlite3_mutex *p){
/*
** Initialize the mutex system.
*/
-SQLITE_PRIVATE int sqlite3MutexInit(void){
+SQLITE_PRIVATE int sqlite3MutexInit(void){
int rc = SQLITE_OK;
if( !sqlite3GlobalConfig.mutex.xMutexAlloc ){
/* If the xMutexAlloc method has not been set, then the user did not
- ** install a mutex implementation via sqlite3_config() prior to
+ ** install a mutex implementation via sqlite3_config() prior to
** sqlite3_initialize() being called. This block copies pointers to
** the default implementation into the sqlite3GlobalConfig structure.
*/
@@ -30468,6 +25900,7 @@ SQLITE_PRIVATE int sqlite3MutexInit(void){
GLOBAL(int, mutexIsInit) = 1;
#endif
+ sqlite3MemoryBarrier();
return rc;
}
@@ -30545,7 +25978,7 @@ SQLITE_API int sqlite3_mutex_try(sqlite3_mutex *p){
/*
** The sqlite3_mutex_leave() routine exits a mutex that was previously
-** entered by the same thread. The behavior is undefined if the mutex
+** entered by the same thread. The behavior is undefined if the mutex
** is not currently entered. If a NULL pointer is passed as an argument
** this function is a no-op.
*/
@@ -30614,9 +26047,9 @@ SQLITE_API int sqlite3_mutex_notheld(sqlite3_mutex *p){
*/
static int noopMutexInit(void){ return SQLITE_OK; }
static int noopMutexEnd(void){ return SQLITE_OK; }
-static sqlite3_mutex *noopMutexAlloc(int id){
+static sqlite3_mutex *noopMutexAlloc(int id){
UNUSED_PARAMETER(id);
- return (sqlite3_mutex*)8;
+ return (sqlite3_mutex*)8;
}
static void noopMutexFree(sqlite3_mutex *p){ UNUSED_PARAMETER(p); return; }
static void noopMutexEnter(sqlite3_mutex *p){ UNUSED_PARAMETER(p); return; }
@@ -30681,7 +26114,7 @@ static int debugMutexEnd(void){ return SQLITE_OK; }
/*
** The sqlite3_mutex_alloc() routine allocates a new
** mutex and returns a pointer to it. If it returns NULL
-** that means that a mutex could not be allocated.
+** that means that a mutex could not be allocated.
*/
static sqlite3_mutex *debugMutexAlloc(int id){
static sqlite3_debug_mutex aStatic[SQLITE_MUTEX_STATIC_VFS3 - 1];
@@ -30859,7 +26292,7 @@ struct sqlite3_mutex {
** there might be race conditions that can cause these routines to
** deliver incorrect results. In particular, if pthread_equal() is
** not an atomic operation, then these routines might delivery
-** incorrect results. On most platforms, pthread_equal() is a
+** incorrect results. On most platforms, pthread_equal() is a
** comparison of two integers and is therefore atomic. But we are
** told that HPUX is not such a platform. If so, then these routines
** will not always work correctly on HPUX.
@@ -30907,7 +26340,7 @@ static int pthreadMutexEnd(void){ return SQLITE_OK; }
**
** - SQLITE_MUTEX_FAST
**
- SQLITE_MUTEX_RECURSIVE
-**
- SQLITE_MUTEX_STATIC_MASTER
+**
- SQLITE_MUTEX_STATIC_MAIN
**
- SQLITE_MUTEX_STATIC_MEM
**
- SQLITE_MUTEX_STATIC_OPEN
**
- SQLITE_MUTEX_STATIC_PRNG
@@ -30941,7 +26374,7 @@ static int pthreadMutexEnd(void){ return SQLITE_OK; }
**
** Note that if one of the dynamic mutex parameters (SQLITE_MUTEX_FAST
** or SQLITE_MUTEX_RECURSIVE) is used then sqlite3_mutex_alloc()
-** returns a different mutex on every call. But for the static
+** returns a different mutex on every call. But for the static
** mutex types, the same mutex is returned on every call that has
** the same type number.
*/
@@ -31052,7 +26485,7 @@ static void pthreadMutexEnter(sqlite3_mutex *p){
** is atomic - that it cannot be deceived into thinking self
** and p->owner are equal if p->owner changes between two values
** that are not equal to self while the comparison is taking place.
- ** This implementation also assumes a coherent cache - that
+ ** This implementation also assumes a coherent cache - that
** separate processes cannot read different values from the same
** address at the same time. If either of these two conditions
** are not met, then the mutexes will fail and problems will result.
@@ -31095,7 +26528,7 @@ static int pthreadMutexTry(sqlite3_mutex *p){
** is atomic - that it cannot be deceived into thinking self
** and p->owner are equal if p->owner changes between two values
** that are not equal to self while the comparison is taking place.
- ** This implementation also assumes a coherent cache - that
+ ** This implementation also assumes a coherent cache - that
** separate processes cannot read different values from the same
** address at the same time. If either of these two conditions
** are not met, then the mutexes will fail and problems will result.
@@ -31267,7 +26700,7 @@ SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){
******************************************************************************
**
** This file contains inline asm code for retrieving "high-performance"
-** counters for x86 class CPUs.
+** counters for x86 and x86_64 class CPUs.
*/
#ifndef SQLITE_HWTIME_H
#define SQLITE_HWTIME_H
@@ -31278,8 +26711,9 @@ SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){
** processor and returns that value. This can be used for high-res
** profiling.
*/
-#if (defined(__GNUC__) || defined(_MSC_VER)) && \
- (defined(i386) || defined(__i386__) || defined(_M_IX86))
+#if !defined(__STRICT_ANSI__) && \
+ (defined(__GNUC__) || defined(_MSC_VER)) && \
+ (defined(i386) || defined(__i386__) || defined(_M_IX86))
#if defined(__GNUC__)
@@ -31300,15 +26734,15 @@ SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){
#endif
-#elif (defined(__GNUC__) && defined(__x86_64__))
+#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__x86_64__))
__inline__ sqlite_uint64 sqlite3Hwtime(void){
unsigned long val;
__asm__ __volatile__ ("rdtsc" : "=A" (val));
return val;
}
-
-#elif (defined(__GNUC__) && defined(__ppc__))
+
+#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__ppc__))
__inline__ sqlite_uint64 sqlite3Hwtime(void){
unsigned long long retval;
@@ -31325,14 +26759,13 @@ SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){
#else
- #error Need implementation of sqlite3Hwtime() for your platform.
-
/*
- ** To compile without implementing sqlite3Hwtime() for your platform,
- ** you can remove the above #error and use the following
- ** stub function. You will lose timing support for many
- ** of the debugging and testing utilities, but it should at
- ** least compile and run.
+ ** asm() is needed for hardware timing support. Without asm(),
+ ** disable the sqlite3Hwtime() routine.
+ **
+ ** sqlite3Hwtime() is only used for some obscure debugging
+ ** and analysis configurations, not in any deliverable, so this
+ ** should not be a great loss.
*/
SQLITE_PRIVATE sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); }
@@ -31653,7 +27086,7 @@ static int winMutexEnd(void){
**
** - SQLITE_MUTEX_FAST
**
- SQLITE_MUTEX_RECURSIVE
-**
- SQLITE_MUTEX_STATIC_MASTER
+**
- SQLITE_MUTEX_STATIC_MAIN
**
- SQLITE_MUTEX_STATIC_MEM
**
- SQLITE_MUTEX_STATIC_OPEN
**
- SQLITE_MUTEX_STATIC_PRNG
@@ -31995,7 +27428,7 @@ SQLITE_API sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 n){
}
mem0.alarmThreshold = n;
nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED);
- mem0.nearlyFull = (n>0 && n<=nUsed);
+ AtomicStore(&mem0.nearlyFull, n>0 && n<=nUsed);
sqlite3_mutex_leave(mem0.mutex);
excess = sqlite3_memory_used() - n;
if( excess>0 ) sqlite3_release_memory((int)(excess & 0x7fffffff));
@@ -32063,7 +27496,7 @@ SQLITE_PRIVATE int sqlite3MallocInit(void){
** sqlite3_soft_heap_limit().
*/
SQLITE_PRIVATE int sqlite3HeapNearlyFull(void){
- return mem0.nearlyFull;
+ return AtomicLoad(&mem0.nearlyFull);
}
/*
@@ -32097,7 +27530,7 @@ SQLITE_API sqlite3_int64 sqlite3_memory_highwater(int resetFlag){
}
/*
-** Trigger the alarm
+** Trigger the alarm
*/
static void sqlite3MallocAlarm(int nByte){
if( mem0.alarmThreshold<=0 ) return;
@@ -32127,7 +27560,7 @@ static void mallocWithAlarm(int n, void **pp){
if( mem0.alarmThreshold>0 ){
sqlite3_int64 nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED);
if( nUsed >= mem0.alarmThreshold - nFull ){
- mem0.nearlyFull = 1;
+ AtomicStore(&mem0.nearlyFull, 1);
sqlite3MallocAlarm(nFull);
if( mem0.hardLimit ){
nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED);
@@ -32137,7 +27570,7 @@ static void mallocWithAlarm(int n, void **pp){
}
}
}else{
- mem0.nearlyFull = 0;
+ AtomicStore(&mem0.nearlyFull, 0);
}
}
p = sqlite3GlobalConfig.m.xMalloc(nFull);
@@ -32216,10 +27649,17 @@ SQLITE_PRIVATE int sqlite3MallocSize(void *p){
assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
return sqlite3GlobalConfig.m.xSize(p);
}
+static int lookasideMallocSize(sqlite3 *db, void *p){
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+ return plookaside.pMiddle ? db->lookaside.szTrue : LOOKASIDE_SMALL;
+#else
+ return db->lookaside.szTrue;
+#endif
+}
SQLITE_PRIVATE int sqlite3DbMallocSize(sqlite3 *db, void *p){
assert( p!=0 );
- if( db==0 || !isLookaside(db,p) ){
#ifdef SQLITE_DEBUG
+ if( db==0 || !isLookaside(db,p) ){
if( db==0 ){
assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) );
assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
@@ -32227,12 +27667,23 @@ SQLITE_PRIVATE int sqlite3DbMallocSize(sqlite3 *db, void *p){
assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
}
-#endif
- return sqlite3GlobalConfig.m.xSize(p);
- }else{
- assert( sqlite3_mutex_held(db->mutex) );
- return db->lookaside.szTrue;
}
+#endif
+ if( db ){
+ if( ((uptr)p)<(uptr)(db->lookaside.pEnd) ){
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+ if( ((uptr)p)>=(uptr)(db->lookaside.pMiddle) ){
+ assert( sqlite3_mutex_held(db->mutex) );
+ return LOOKASIDE_SMALL;
+ }
+#endif
+ if( ((uptr)p)>=(uptr)(db->lookaside.pStart) ){
+ assert( sqlite3_mutex_held(db->mutex) );
+ return db->lookaside.szTrue;
+ }
+ }
+ }
+ return sqlite3GlobalConfig.m.xSize(p);
}
SQLITE_API sqlite3_uint64 sqlite3_msize(void *p){
assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) );
@@ -32279,15 +27730,27 @@ SQLITE_PRIVATE void sqlite3DbFreeNN(sqlite3 *db, void *p){
measureAllocationSize(db, p);
return;
}
- if( isLookaside(db, p) ){
- LookasideSlot *pBuf = (LookasideSlot*)p;
+ if( ((uptr)p)<(uptr)(db->lookaside.pEnd) ){
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+ if( ((uptr)p)>=(uptr)(db->lookaside.pMiddle) ){
+ LookasideSlot *pBuf = (LookasideSlot*)p;
#ifdef SQLITE_DEBUG
- /* Trash all content in the buffer being freed */
- memset(p, 0xaa, db->lookaside.szTrue);
+ memset(p, 0xaa, LOOKASIDE_SMALL); /* Trash freed content */
#endif
- pBuf->pNext = db->lookaside.pFree;
- db->lookaside.pFree = pBuf;
- return;
+ pBuf->pNext = db->lookaside.pSmallFree;
+ db->lookaside.pSmallFree = pBuf;
+ return;
+ }
+#endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */
+ if( ((uptr)p)>=(uptr)(db->lookaside.pStart) ){
+ LookasideSlot *pBuf = (LookasideSlot*)p;
+#ifdef SQLITE_DEBUG
+ memset(p, 0xaa, db->lookaside.szTrue); /* Trash freed content */
+#endif
+ pBuf->pNext = db->lookaside.pFree;
+ db->lookaside.pFree = pBuf;
+ return;
+ }
}
}
assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
@@ -32331,15 +27794,17 @@ SQLITE_PRIVATE void *sqlite3Realloc(void *pOld, u64 nBytes){
sqlite3_mutex_enter(mem0.mutex);
sqlite3StatusHighwater(SQLITE_STATUS_MALLOC_SIZE, (int)nBytes);
nDiff = nNew - nOld;
- if( nDiff>0 && sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED) >=
+ if( nDiff>0 && sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED) >=
mem0.alarmThreshold-nDiff ){
sqlite3MallocAlarm(nDiff);
}
pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew);
+#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
if( pNew==0 && mem0.alarmThreshold>0 ){
sqlite3MallocAlarm((int)nBytes);
pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew);
}
+#endif
if( pNew ){
nNew = sqlite3MallocSize(pNew);
sqlite3StatusUp(SQLITE_STATUS_MEMORY_USED, nNew-nOld);
@@ -32373,7 +27838,7 @@ SQLITE_API void *sqlite3_realloc64(void *pOld, sqlite3_uint64 n){
/*
** Allocate and zero memory.
-*/
+*/
SQLITE_PRIVATE void *sqlite3MallocZero(u64 n){
void *p = sqlite3Malloc(n);
if( p ){
@@ -32403,13 +27868,13 @@ static SQLITE_NOINLINE void *dbMallocRawFinish(sqlite3 *db, u64 n){
assert( db!=0 );
p = sqlite3Malloc(n);
if( !p ) sqlite3OomFault(db);
- sqlite3MemdebugSetType(p,
+ sqlite3MemdebugSetType(p,
(db->lookaside.bDisable==0) ? MEMTYPE_LOOKASIDE : MEMTYPE_HEAP);
return p;
}
/*
-** Allocate memory, either lookaside (if possible) or heap.
+** Allocate memory, either lookaside (if possible) or heap.
** If the allocation fails, set the mallocFailed flag in
** the connection pointer.
**
@@ -32444,11 +27909,27 @@ SQLITE_PRIVATE void *sqlite3DbMallocRawNN(sqlite3 *db, u64 n){
assert( sqlite3_mutex_held(db->mutex) );
assert( db->pnBytesFreed==0 );
if( n>db->lookaside.sz ){
- if( db->lookaside.bDisable ){
- return db->mallocFailed ? 0 : dbMallocRawFinish(db, n);
+ if( !db->lookaside.bDisable ){
+ db->lookaside.anStat[1]++;
+ }else if( db->mallocFailed ){
+ return 0;
}
- db->lookaside.anStat[1]++;
- }else if( (pBuf = db->lookaside.pFree)!=0 ){
+ return dbMallocRawFinish(db, n);
+ }
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+ if( n<=LOOKASIDE_SMALL ){
+ if( (pBuf = db->lookaside.pSmallFree)!=0 ){
+ db->lookaside.pSmallFree = pBuf->pNext;
+ db->lookaside.anStat[0]++;
+ return (void*)pBuf;
+ }else if( (pBuf = db->lookaside.pSmallInit)!=0 ){
+ db->lookaside.pSmallInit = pBuf->pNext;
+ db->lookaside.anStat[0]++;
+ return (void*)pBuf;
+ }
+ }
+#endif
+ if( (pBuf = db->lookaside.pFree)!=0 ){
db->lookaside.pFree = pBuf->pNext;
db->lookaside.anStat[0]++;
return (void*)pBuf;
@@ -32481,7 +27962,16 @@ SQLITE_PRIVATE void *sqlite3DbRealloc(sqlite3 *db, void *p, u64 n){
assert( db!=0 );
if( p==0 ) return sqlite3DbMallocRawNN(db, n);
assert( sqlite3_mutex_held(db->mutex) );
- if( isLookaside(db,p) && n<=db->lookaside.szTrue ) return p;
+ if( ((uptr)p)<(uptr)db->lookaside.pEnd ){
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+ if( ((uptr)p)>=(uptr)db->lookaside.pMiddle ){
+ if( n<=LOOKASIDE_SMALL ) return p;
+ }else
+#endif
+ if( ((uptr)p)>=(uptr)db->lookaside.pStart ){
+ if( n<=db->lookaside.szTrue ) return p;
+ }
+ }
return dbReallocFinish(db, p, n);
}
static SQLITE_NOINLINE void *dbReallocFinish(sqlite3 *db, void *p, u64 n){
@@ -32492,14 +27982,14 @@ static SQLITE_NOINLINE void *dbReallocFinish(sqlite3 *db, void *p, u64 n){
if( isLookaside(db, p) ){
pNew = sqlite3DbMallocRawNN(db, n);
if( pNew ){
- memcpy(pNew, p, db->lookaside.szTrue);
+ memcpy(pNew, p, lookasideMallocSize(db, p));
sqlite3DbFree(db, p);
}
}else{
assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
- pNew = sqlite3_realloc64(p, n);
+ pNew = sqlite3Realloc(p, n);
if( !pNew ){
sqlite3OomFault(db);
}
@@ -32524,9 +28014,9 @@ SQLITE_PRIVATE void *sqlite3DbReallocOrFree(sqlite3 *db, void *p, u64 n){
}
/*
-** Make a copy of a string in memory obtained from sqliteMalloc(). These
+** Make a copy of a string in memory obtained from sqliteMalloc(). These
** functions call sqlite3MallocRaw() directly instead of sqliteMalloc(). This
-** is because when memory debugging is turned on, these two functions are
+** is because when memory debugging is turned on, these two functions are
** called via macros that record the current file and line number in the
** ThreadData structure.
*/
@@ -32546,11 +28036,9 @@ SQLITE_PRIVATE char *sqlite3DbStrDup(sqlite3 *db, const char *z){
SQLITE_PRIVATE char *sqlite3DbStrNDup(sqlite3 *db, const char *z, u64 n){
char *zNew;
assert( db!=0 );
- if( z==0 ){
- return 0;
- }
+ assert( z!=0 || n==0 );
assert( (n&0x7fffffff)==n );
- zNew = sqlite3DbMallocRawNN(db, n+1);
+ zNew = z ? sqlite3DbMallocRawNN(db, n+1) : 0;
if( zNew ){
memcpy(zNew, z, (size_t)n);
zNew[n] = 0;
@@ -32589,7 +28077,7 @@ SQLITE_PRIVATE void sqlite3OomFault(sqlite3 *db){
if( db->mallocFailed==0 && db->bBenignMalloc==0 ){
db->mallocFailed = 1;
if( db->nVdbeExec>0 ){
- db->u1.isInterrupted = 1;
+ AtomicStore(&db->u1.isInterrupted, 1);
}
DisableLookaside;
if( db->pParse ){
@@ -32608,7 +28096,7 @@ SQLITE_PRIVATE void sqlite3OomFault(sqlite3 *db){
SQLITE_PRIVATE void sqlite3OomClear(sqlite3 *db){
if( db->mallocFailed && db->nVdbeExec==0 ){
db->mallocFailed = 0;
- db->u1.isInterrupted = 0;
+ AtomicStore(&db->u1.isInterrupted, 0);
assert( db->lookaside.bDisable>0 );
EnableLookaside;
}
@@ -32624,20 +28112,20 @@ static SQLITE_NOINLINE int apiOomError(sqlite3 *db){
}
/*
-** This function must be called before exiting any API function (i.e.
+** This function must be called before exiting any API function (i.e.
** returning control to the user) that has called sqlite3_malloc or
** sqlite3_realloc.
**
** The returned value is normally a copy of the second argument to this
** function. However, if a malloc() failure has occurred since the previous
-** invocation SQLITE_NOMEM is returned instead.
+** invocation SQLITE_NOMEM is returned instead.
**
** If an OOM as occurred, then the connection error-code (the value
** returned by sqlite3_errcode()) is set to SQLITE_NOMEM.
*/
SQLITE_PRIVATE int sqlite3ApiExit(sqlite3* db, int rc){
/* If the db handle must hold the connection handle mutex here.
- ** Otherwise the read (and possible write) of db->mallocFailed
+ ** Otherwise the read (and possible write) of db->mallocFailed
** is unsafe, as is the call to sqlite3Error().
*/
assert( db!=0 );
@@ -32652,7 +28140,7 @@ SQLITE_PRIVATE int sqlite3ApiExit(sqlite3* db, int rc){
/************** Begin file printf.c ******************************************/
/*
** The "printf" code that follows dates from the 1980's. It is in
-** the public domain.
+** the public domain.
**
**************************************************************************
**
@@ -32846,6 +28334,13 @@ static char *printfTempBuf(sqlite3_str *pAccum, sqlite3_int64 n){
#endif
#define etBUFSIZE SQLITE_PRINT_BUF_SIZE /* Size of the output buffer */
+/*
+** Hard limit on the precision of floating-point conversions.
+*/
+#ifndef SQLITE_PRINTF_PRECISION_LIMIT
+# define SQLITE_FP_PRECISION_LIMIT 100000000
+#endif
+
/*
** Render a string given by "fmt" into the StrAccum object.
*/
@@ -32887,7 +28382,7 @@ SQLITE_API void sqlite3_str_vappendf(
PrintfArguments *pArgList = 0; /* Arguments for SQLITE_PRINTF_SQLFUNC */
char buf[etBUFSIZE]; /* Conversion buffer */
- /* pAccum never starts out with an empty buffer that was obtained from
+ /* pAccum never starts out with an empty buffer that was obtained from
** malloc(). This precondition is required by the mprintf("%z...")
** optimization. */
assert( pAccum->nChar>0 || (pAccum->printfFlags&SQLITE_PRINTF_MALLOCED)==0 );
@@ -33046,15 +28541,17 @@ SQLITE_API void sqlite3_str_vappendf(
** xtype The class of the conversion.
** infop Pointer to the appropriate info struct.
*/
+ assert( width>=0 );
+ assert( precision>=(-1) );
switch( xtype ){
case etPOINTER:
flag_long = sizeof(char*)==sizeof(i64) ? 2 :
sizeof(char*)==sizeof(long int) ? 1 : 0;
- /* Fall through into the next case */
+ /* no break */ deliberate_fall_through
case etORDINAL:
- case etRADIX:
+ case etRADIX:
cThousand = 0;
- /* Fall through into the next case */
+ /* no break */ deliberate_fall_through
case etDECIMAL:
if( infop->flags & FLAG_SIGNED ){
i64 v;
@@ -33167,6 +28664,11 @@ SQLITE_API void sqlite3_str_vappendf(
length = 0;
#else
if( precision<0 ) precision = 6; /* Set default precision */
+#ifdef SQLITE_FP_PRECISION_LIMIT
+ if( precision>SQLITE_FP_PRECISION_LIMIT ){
+ precision = SQLITE_FP_PRECISION_LIMIT;
+ }
+#endif
if( realvalue<0.0 ){
realvalue = -realvalue;
prefix = '-';
@@ -33449,7 +28951,7 @@ SQLITE_API void sqlite3_str_vappendf(
}
isnull = escarg==0;
if( isnull ) escarg = (xtype==etSQLESCAPE2 ? "NULL" : "(NULL)");
- /* For %q, %Q, and %w, the precision is the number of byte (or
+ /* For %q, %Q, and %w, the precision is the number of bytes (or
** characters if the ! flags is present) to use from the input.
** Because of the extra quoting characters inserted, the number
** of output characters may be larger than the precision.
@@ -33576,7 +29078,7 @@ static int sqlite3StrAccumEnlarge(StrAccum *p, int N){
if( p->db ){
zNew = sqlite3DbRealloc(p->db, zOld, p->nAlloc);
}else{
- zNew = sqlite3_realloc64(zOld, p->nAlloc);
+ zNew = sqlite3Realloc(zOld, p->nAlloc);
}
if( zNew ){
assert( p->zText!=0 || p->nChar==0 );
@@ -33805,7 +29307,7 @@ SQLITE_API char *sqlite3_vmprintf(const char *zFormat, va_list ap){
char zBase[SQLITE_PRINT_BUF_SIZE];
StrAccum acc;
-#ifdef SQLITE_ENABLE_API_ARMOR
+#ifdef SQLITE_ENABLE_API_ARMOR
if( zFormat==0 ){
(void)SQLITE_MISUSE_BKPT;
return 0;
@@ -33918,7 +29420,7 @@ SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...){
SQLITE_PRIVATE void sqlite3DebugPrintf(const char *zFormat, ...){
va_list ap;
StrAccum acc;
- char zBuf[500];
+ char zBuf[SQLITE_PRINT_BUF_SIZE*10];
sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0);
va_start(ap,zFormat);
sqlite3_str_vappendf(&acc, zFormat, ap);
@@ -33964,7 +29466,7 @@ SQLITE_API void sqlite3_str_appendf(StrAccum *p, const char *zFormat, ...){
**
** This file contains C code to implement the TreeView debugging routines.
** These routines print a parse tree to standard output for debugging and
-** analysis.
+** analysis.
**
** The interfaces in this file is only available when compiling
** with SQLITE_DEBUG.
@@ -34058,7 +29560,7 @@ SQLITE_PRIVATE void sqlite3TreeViewWith(TreeView *pView, const With *pWith, u8 m
char cSep = '(';
int j;
for(j=0; jpCols->nExpr; j++){
- sqlite3_str_appendf(&x, "%c%s", cSep, pCte->pCols->a[j].zName);
+ sqlite3_str_appendf(&x, "%c%s", cSep, pCte->pCols->a[j].zEName);
cSep = ',';
}
sqlite3_str_appendf(&x, ")");
@@ -34090,8 +29592,8 @@ SQLITE_PRIVATE void sqlite3TreeViewSrcList(TreeView *pView, const SrcList *pSrc)
sqlite3_str_appendf(&x, " %s", pItem->zName);
}
if( pItem->pTab ){
- sqlite3_str_appendf(&x, " tab=%Q nCol=%d ptr=%p",
- pItem->pTab->zName, pItem->pTab->nCol, pItem->pTab);
+ sqlite3_str_appendf(&x, " tab=%Q nCol=%d ptr=%p used=%llx",
+ pItem->pTab->zName, pItem->pTab->nCol, pItem->pTab, pItem->colUsed);
}
if( pItem->zAlias ){
sqlite3_str_appendf(&x, " (AS %s)", pItem->zAlias);
@@ -34099,8 +29601,11 @@ SQLITE_PRIVATE void sqlite3TreeViewSrcList(TreeView *pView, const SrcList *pSrc)
if( pItem->fg.jointype & JT_LEFT ){
sqlite3_str_appendf(&x, " LEFT-JOIN");
}
+ if( pItem->fg.fromDDL ){
+ sqlite3_str_appendf(&x, " DDL");
+ }
sqlite3StrAccumFinish(&x);
- sqlite3TreeViewItem(pView, zLine, inSrc-1);
+ sqlite3TreeViewItem(pView, zLine, inSrc-1);
if( pItem->pSelect ){
sqlite3TreeViewSelect(pView, pItem->pSelect, 0);
}
@@ -34120,7 +29625,7 @@ SQLITE_PRIVATE void sqlite3TreeViewSelect(TreeView *pView, const Select *p, u8 m
if( p==0 ){
sqlite3TreeViewLine(pView, "nil-SELECT");
return;
- }
+ }
pView = sqlite3TreeViewPush(pView, moreToFollow);
if( p->pWith ){
sqlite3TreeViewWith(pView, p->pWith, 1);
@@ -34347,22 +29852,28 @@ SQLITE_PRIVATE void sqlite3TreeViewWinFunc(TreeView *pView, const Window *pWin,
SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 moreToFollow){
const char *zBinOp = 0; /* Binary operator */
const char *zUniOp = 0; /* Unary operator */
- char zFlgs[60];
+ char zFlgs[200];
pView = sqlite3TreeViewPush(pView, moreToFollow);
if( pExpr==0 ){
sqlite3TreeViewLine(pView, "nil");
sqlite3TreeViewPop(pView);
return;
}
- if( pExpr->flags || pExpr->affExpr ){
+ if( pExpr->flags || pExpr->affExpr || pExpr->vvaFlags ){
+ StrAccum x;
+ sqlite3StrAccumInit(&x, 0, zFlgs, sizeof(zFlgs), 0);
+ sqlite3_str_appendf(&x, " fg.af=%x.%c",
+ pExpr->flags, pExpr->affExpr ? pExpr->affExpr : 'n');
if( ExprHasProperty(pExpr, EP_FromJoin) ){
- sqlite3_snprintf(sizeof(zFlgs),zFlgs," fg.af=%x.%c iRJT=%d",
- pExpr->flags, pExpr->affExpr ? pExpr->affExpr : 'n',
- pExpr->iRightJoinTable);
- }else{
- sqlite3_snprintf(sizeof(zFlgs),zFlgs," fg.af=%x.%c",
- pExpr->flags, pExpr->affExpr ? pExpr->affExpr : 'n');
+ sqlite3_str_appendf(&x, " iRJT=%d", pExpr->iRightJoinTable);
}
+ if( ExprHasProperty(pExpr, EP_FromDDL) ){
+ sqlite3_str_appendf(&x, " DDL");
+ }
+ if( ExprHasVVAProperty(pExpr, EP_Immutable) ){
+ sqlite3_str_appendf(&x, " IMMUTABLE");
+ }
+ sqlite3StrAccumFinish(&x);
}else{
zFlgs[0] = 0;
}
@@ -34384,8 +29895,9 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m
sqlite3TreeViewLine(pView, "COLUMN(%d)%s%s",
pExpr->iColumn, zFlgs, zOp2);
}else{
- sqlite3TreeViewLine(pView, "{%d:%d}%s",
- pExpr->iTable, pExpr->iColumn, zFlgs);
+ sqlite3TreeViewLine(pView, "{%d:%d} pTab=%p%s",
+ pExpr->iTable, pExpr->iColumn,
+ pExpr->y.pTab, zFlgs);
}
if( ExprHasProperty(pExpr, EP_FixedCol) ){
sqlite3TreeViewExpr(pView, pExpr->pLeft, 0);
@@ -34467,6 +29979,7 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m
case TK_RSHIFT: zBinOp = "RSHIFT"; break;
case TK_CONCAT: zBinOp = "CONCAT"; break;
case TK_DOT: zBinOp = "DOT"; break;
+ case TK_LIMIT: zBinOp = "LIMIT"; break;
case TK_UMINUS: zUniOp = "UMINUS"; break;
case TK_UPLUS: zUniOp = "UPLUS"; break;
@@ -34517,14 +30030,16 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m
}else{
pFarg = pExpr->x.pList;
#ifndef SQLITE_OMIT_WINDOWFUNC
- pWin = pExpr->y.pWin;
+ pWin = ExprHasProperty(pExpr, EP_WinFunc) ? pExpr->y.pWin : 0;
#else
pWin = 0;
-#endif
+#endif
}
if( pExpr->op==TK_AGG_FUNCTION ){
- sqlite3TreeViewLine(pView, "AGG_FUNCTION%d %Q%s",
- pExpr->op2, pExpr->u.zToken, zFlgs);
+ sqlite3TreeViewLine(pView, "AGG_FUNCTION%d %Q%s agg=%d[%d]/%p",
+ pExpr->op2, pExpr->u.zToken, zFlgs,
+ pExpr->pAggInfo ? pExpr->pAggInfo->selId : 0,
+ pExpr->iAgg, pExpr->pAggInfo);
}else if( pExpr->op2!=0 ){
const char *zOp2;
char zBuf[8];
@@ -34556,7 +30071,7 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m
break;
}
case TK_SELECT: {
- sqlite3TreeViewLine(pView, "SELECT-expr flags=0x%x", pExpr->flags);
+ sqlite3TreeViewLine(pView, "subquery-expr flags=0x%x", pExpr->flags);
sqlite3TreeViewSelect(pView, pExpr->x.pSelect, 0);
break;
}
@@ -34601,7 +30116,7 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m
** is set to the column of the pseudo-table to read, or to -1 to
** read the rowid field.
*/
- sqlite3TreeViewLine(pView, "%s(%d)",
+ sqlite3TreeViewLine(pView, "%s(%d)",
pExpr->iTable ? "NEW" : "OLD", pExpr->iColumn);
break;
}
@@ -34679,8 +30194,9 @@ SQLITE_PRIVATE void sqlite3TreeViewBareExprList(
sqlite3TreeViewLine(pView, "%s", zLabel);
for(i=0; inExpr; i++){
int j = pList->a[i].u.x.iOrderByCol;
- char *zName = pList->a[i].zName;
+ char *zName = pList->a[i].zEName;
int moreToFollow = inExpr - 1;
+ if( pList->a[i].eEName!=ENAME_NAME ) zName = 0;
if( j || zName ){
sqlite3TreeViewPush(pView, moreToFollow);
moreToFollow = 0;
@@ -34922,13 +30438,13 @@ SQLITE_PRIVATE int sqlite3ThreadCreate(
memset(p, 0, sizeof(*p));
p->xTask = xTask;
p->pIn = pIn;
- /* If the SQLITE_TESTCTRL_FAULT_INSTALL callback is registered to a
+ /* If the SQLITE_TESTCTRL_FAULT_INSTALL callback is registered to a
** function that returns SQLITE_ERROR when passed the argument 200, that
- ** forces worker threads to run sequentially and deterministically
+ ** forces worker threads to run sequentially and deterministically
** for testing purposes. */
if( sqlite3FaultSim(200) ){
rc = 1;
- }else{
+ }else{
rc = pthread_create(&p->tid, 0, xTask, pIn);
}
if( rc ){
@@ -35010,9 +30526,9 @@ SQLITE_PRIVATE int sqlite3ThreadCreate(
*ppThread = 0;
p = sqlite3Malloc(sizeof(*p));
if( p==0 ) return SQLITE_NOMEM_BKPT;
- /* If the SQLITE_TESTCTRL_FAULT_INSTALL callback is registered to a
+ /* If the SQLITE_TESTCTRL_FAULT_INSTALL callback is registered to a
** function that returns SQLITE_ERROR when passed the argument 200, that
- ** forces worker threads to run sequentially and deterministically
+ ** forces worker threads to run sequentially and deterministically
** (via the sqlite3FaultSim() term of the conditional) for testing
** purposes. */
if( sqlite3GlobalConfig.bCoreMutex==0 || sqlite3FaultSim(200) ){
@@ -35141,7 +30657,7 @@ SQLITE_PRIVATE int sqlite3ThreadJoin(SQLiteThread *p, void **ppOut){
** May you share freely, never taking more than you give.
**
*************************************************************************
-** This file contains routines used to translate between UTF-8,
+** This file contains routines used to translate between UTF-8,
** UTF-16, UTF-16BE, and UTF-16LE.
**
** Notes on UTF-8:
@@ -35237,26 +30753,6 @@ static const unsigned char sqlite3Utf8Trans1[] = {
} \
}
-#define READ_UTF16LE(zIn, TERM, c){ \
- c = (*zIn++); \
- c += ((*zIn++)<<8); \
- if( c>=0xD800 && c<0xE000 && TERM ){ \
- int c2 = (*zIn++); \
- c2 += ((*zIn++)<<8); \
- c = (c2&0x03FF) + ((c&0x003F)<<10) + (((c&0x03C0)+0x0040)<<10); \
- } \
-}
-
-#define READ_UTF16BE(zIn, TERM, c){ \
- c = ((*zIn++)<<8); \
- c += (*zIn++); \
- if( c>=0xD800 && c<0xE000 && TERM ){ \
- int c2 = ((*zIn++)<<8); \
- c2 += (*zIn++); \
- c = (c2&0x03FF) + ((c&0x003F)<<10) + (((c&0x03C0)+0x0040)<<10); \
- } \
-}
-
/*
** Translate a single UTF-8 character. Return the unicode value.
**
@@ -35322,7 +30818,7 @@ SQLITE_PRIVATE u32 sqlite3Utf8Read(
/*
** If the TRANSLATE_TRACE macro is defined, the value of each Mem is
** printed on stderr on the way into and out of sqlite3VdbeMemTranslate().
-*/
+*/
/* #define TRANSLATE_TRACE 1 */
#ifndef SQLITE_OMIT_UTF16
@@ -35347,13 +30843,15 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desired
#if defined(TRANSLATE_TRACE) && defined(SQLITE_DEBUG)
{
- char zBuf[100];
- sqlite3VdbeMemPrettyPrint(pMem, zBuf);
- fprintf(stderr, "INPUT: %s\n", zBuf);
+ StrAccum acc;
+ char zBuf[1000];
+ sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0);
+ sqlite3VdbeMemPrettyPrint(pMem, &acc);
+ fprintf(stderr, "INPUT: %s\n", sqlite3StrAccumFinish(&acc));
}
#endif
- /* If the translation is between UTF-16 little and big endian, then
+ /* If the translation is between UTF-16 little and big endian, then
** all that is required is to swap the byte order. This case is handled
** differently from the others.
*/
@@ -35431,13 +30929,59 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desired
if( pMem->enc==SQLITE_UTF16LE ){
/* UTF-16 Little-endian -> UTF-8 */
while( zIn=0xd800 && c<0xe000 ){
+#ifdef SQLITE_REPLACE_INVALID_UTF
+ if( c>=0xdc00 || zIn>=zTerm ){
+ c = 0xfffd;
+ }else{
+ int c2 = *(zIn++);
+ c2 += (*(zIn++))<<8;
+ if( c2<0xdc00 || c2>=0xe000 ){
+ zIn -= 2;
+ c = 0xfffd;
+ }else{
+ c = ((c&0x3ff)<<10) + (c2&0x3ff) + 0x10000;
+ }
+ }
+#else
+ if( zIn UTF-8 */
while( zIn=0xd800 && c<0xe000 ){
+#ifdef SQLITE_REPLACE_INVALID_UTF
+ if( c>=0xdc00 || zIn>=zTerm ){
+ c = 0xfffd;
+ }else{
+ int c2 = (*(zIn++))<<8;
+ c2 += *(zIn++);
+ if( c2<0xdc00 || c2>=0xe000 ){
+ zIn -= 2;
+ c = 0xfffd;
+ }else{
+ c = ((c&0x3ff)<<10) + (c2&0x3ff) + 0x10000;
+ }
+ }
+#else
+ if( zInn+(desiredEnc==SQLITE_UTF8?1:2))<=len );
- c = pMem->flags;
+ c = MEM_Str|MEM_Term|(pMem->flags&(MEM_AffMask|MEM_Subtype));
sqlite3VdbeMemRelease(pMem);
- pMem->flags = MEM_Str|MEM_Term|(c&(MEM_AffMask|MEM_Subtype));
+ pMem->flags = c;
pMem->enc = desiredEnc;
pMem->z = (char*)zOut;
pMem->zMalloc = pMem->z;
@@ -35457,9 +31001,11 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desired
translate_out:
#if defined(TRANSLATE_TRACE) && defined(SQLITE_DEBUG)
{
- char zBuf[100];
- sqlite3VdbeMemPrettyPrint(pMem, zBuf);
- fprintf(stderr, "OUTPUT: %s\n", zBuf);
+ StrAccum acc;
+ char zBuf[1000];
+ sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0);
+ sqlite3VdbeMemPrettyPrint(pMem, &acc);
+ fprintf(stderr, "OUTPUT: %s\n", sqlite3StrAccumFinish(&acc));
}
#endif
return SQLITE_OK;
@@ -35468,7 +31014,7 @@ translate_out:
#ifndef SQLITE_OMIT_UTF16
/*
-** This routine checks for a byte-order mark at the beginning of the
+** This routine checks for a byte-order mark at the beginning of the
** UTF-16 string stored in *pMem. If one is present, it is removed and
** the encoding of the Mem adjusted. This routine does not do any
** byte-swapping, it just sets Mem.enc appropriately.
@@ -35491,7 +31037,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemHandleBom(Mem *pMem){
bom = SQLITE_UTF16LE;
}
}
-
+
if( bom ){
rc = sqlite3VdbeMemMakeWriteable(pMem);
if( rc==SQLITE_OK ){
@@ -35511,7 +31057,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemHandleBom(Mem *pMem){
** pZ is a UTF-8 encoded unicode string. If nByte is less than zero,
** return the number of unicode characters in pZ up to (but not including)
** the first 0x00 byte. If nByte is not less than zero, return the
-** number of unicode characters in the first nByte of pZ (or up to
+** number of unicode characters in the first nByte of pZ (or up to
** the first 0x00, whichever comes first).
*/
SQLITE_PRIVATE int sqlite3Utf8CharLen(const char *zIn, int nByte){
@@ -35531,7 +31077,7 @@ SQLITE_PRIVATE int sqlite3Utf8CharLen(const char *zIn, int nByte){
return r;
}
-/* This test function is not currently used by the automated test-suite.
+/* This test function is not currently used by the automated test-suite.
** Hence it is only available in debug builds.
*/
#if defined(SQLITE_TEST) && defined(SQLITE_DEBUG)
@@ -35593,19 +31139,16 @@ SQLITE_PRIVATE int sqlite3Utf16ByteLen(const void *zIn, int nChar){
int c;
unsigned char const *z = zIn;
int n = 0;
-
- if( SQLITE_UTF16NATIVE==SQLITE_UTF16BE ){
- while( n=0xd8 && c<0xdc && z[0]>=0xdc && z[0]<0xe0 ) z += 2;
+ n++;
}
- return (int)(z-(unsigned char const *)zIn);
+ return (int)(z-(unsigned char const *)zIn)
+ - (SQLITE_UTF16NATIVE==SQLITE_UTF16LE);
}
#if defined(SQLITE_TEST)
@@ -35635,30 +31178,6 @@ SQLITE_PRIVATE void sqlite3UtfSelfTest(void){
assert( c==t );
assert( (z-zBuf)==n );
}
- for(i=0; i<0x00110000; i++){
- if( i>=0xD800 && i<0xE000 ) continue;
- z = zBuf;
- WRITE_UTF16LE(z, i);
- n = (int)(z-zBuf);
- assert( n>0 && n<=4 );
- z[0] = 0;
- z = zBuf;
- READ_UTF16LE(z, 1, c);
- assert( c==i );
- assert( (z-zBuf)==n );
- }
- for(i=0; i<0x00110000; i++){
- if( i>=0xD800 && i<0xE000 ) continue;
- z = zBuf;
- WRITE_UTF16BE(z, i);
- n = (int)(z-zBuf);
- assert( n>0 && n<=4 );
- z[0] = 0;
- z = zBuf;
- READ_UTF16BE(z, 1, c);
- assert( c==i );
- assert( (z-zBuf)==n );
- }
}
#endif /* SQLITE_TEST */
#endif /* SQLITE_OMIT_UTF16 */
@@ -35684,7 +31203,9 @@ SQLITE_PRIVATE void sqlite3UtfSelfTest(void){
*/
/* #include "sqliteInt.h" */
/* #include */
+#ifndef SQLITE_OMIT_FLOATING_POINT
#include
+#endif
/*
** Routine needed to support the testcase() macro.
@@ -35698,7 +31219,7 @@ SQLITE_PRIVATE void sqlite3Coverage(int x){
/*
** Calls to sqlite3FaultSim() are used to simulate a failure during testing,
-** or to bypass normal error detection during testing in order to let
+** or to bypass normal error detection during testing in order to let
** execute proceed futher downstream.
**
** In deployment, sqlite3FaultSim() *always* return SQLITE_OK (0). The
@@ -35747,7 +31268,7 @@ SQLITE_PRIVATE int sqlite3Strlen30(const char *z){
}
/*
-** Return the declared type of a column. Or return zDflt if the column
+** Return the declared type of a column. Or return zDflt if the column
** has no declared type.
**
** The column type is an extra string stored after the zero-terminator on
@@ -35982,6 +31503,19 @@ SQLITE_API int sqlite3_strnicmp(const char *zLeft, const char *zRight, int N){
return N<0 ? 0 : UpperToLower[*a] - UpperToLower[*b];
}
+/*
+** Compute an 8-bit hash on a string that is insensitive to case differences
+*/
+SQLITE_PRIVATE u8 sqlite3StrIHash(const char *z){
+ u8 h = 0;
+ if( z==0 ) return 0;
+ while( z[0] ){
+ h += UpperToLower[(unsigned char)z[0]];
+ z++;
+ }
+ return h;
+}
+
/*
** Compute 10 to the E-th power. Examples: E==1 results in 10.
** E==2 results in 100. E==50 results in 1.0e50.
@@ -36017,7 +31551,7 @@ static LONGDOUBLE_TYPE sqlite3Pow10(int E){
if( E==0 ) break;
x *= x;
}
- return r;
+ return r;
#endif
}
@@ -36034,7 +31568,7 @@ static LONGDOUBLE_TYPE sqlite3Pow10(int E){
** 1 => The input string is a pure integer
** 2 or more => The input has a decimal point or eNNN clause
** 0 or less => The input string is not a valid number
-** -1 => Not a valid number, but has a valid prefix which
+** -1 => Not a valid number, but has a valid prefix which
** includes a decimal point and/or an eNNN clause
**
** Valid numbers are in one of these formats:
@@ -36056,7 +31590,7 @@ static LONGDOUBLE_TYPE sqlite3Pow10(int E){
SQLITE_PRIVATE int sqlite3AtoF(const char *z, double *pResult, int length, u8 enc){
#ifndef SQLITE_OMIT_FLOATING_POINT
int incr;
- const char *zEnd = z + length;
+ const char *zEnd;
/* sign * significand * (10 ^ (esign * exponent)) */
int sign = 1; /* sign of significand */
i64 s = 0; /* significand */
@@ -36070,12 +31604,15 @@ SQLITE_PRIVATE int sqlite3AtoF(const char *z, double *pResult, int length, u8 en
assert( enc==SQLITE_UTF8 || enc==SQLITE_UTF16LE || enc==SQLITE_UTF16BE );
*pResult = 0.0; /* Default return value, in case of an error */
+ if( length==0 ) return 0;
if( enc==SQLITE_UTF8 ){
incr = 1;
+ zEnd = z + length;
}else{
int i;
incr = 2;
+ length &= ~1;
assert( SQLITE_UTF16LE==2 && SQLITE_UTF16BE==3 );
testcase( enc==SQLITE_UTF16LE );
testcase( enc==SQLITE_UTF16BE );
@@ -36132,7 +31669,7 @@ SQLITE_PRIVATE int sqlite3AtoF(const char *z, double *pResult, int length, u8 en
eValid = 0;
eType++;
- /* This branch is needed to avoid a (harmless) buffer overread. The
+ /* This branch is needed to avoid a (harmless) buffer overread. The
** special comment alerts the mutation tester that the correct answer
** is obtained even if the branch is omitted */
if( z>=zEnd ) goto do_atof_calc; /*PREVENTS-HARMLESS-OVERREAD*/
@@ -36244,6 +31781,30 @@ do_atof_calc:
#pragma warning(default : 4756)
#endif
+/*
+** Render an signed 64-bit integer as text. Store the result in zOut[].
+**
+** The caller must ensure that zOut[] is at least 21 bytes in size.
+*/
+SQLITE_PRIVATE void sqlite3Int64ToText(i64 v, char *zOut){
+ int i;
+ u64 x;
+ char zTemp[22];
+ if( v<0 ){
+ x = (v==SMALLEST_INT64) ? ((u64)1)<<63 : (u64)-v;
+ }else{
+ x = v;
+ }
+ i = sizeof(zTemp)-2;
+ zTemp[sizeof(zTemp)-1] = 0;
+ do{
+ zTemp[i--] = (x%10) + '0';
+ x = x/10;
+ }while( x );
+ if( v<0 ) zTemp[i--] = '-';
+ memcpy(zOut, &zTemp[i+1], sizeof(zTemp)-1-i);
+}
+
/*
** Compare the 19-character string zNum against the text representation
** value 2^63: 9223372036854775808. Return negative, zero, or positive
@@ -36484,10 +32045,28 @@ SQLITE_PRIVATE int sqlite3GetInt32(const char *zNum, int *pValue){
*/
SQLITE_PRIVATE int sqlite3Atoi(const char *z){
int x = 0;
- if( z ) sqlite3GetInt32(z, &x);
+ sqlite3GetInt32(z, &x);
return x;
}
+/*
+** Try to convert z into an unsigned 32-bit integer. Return true on
+** success and false if there is an error.
+**
+** Only decimal notation is accepted.
+*/
+SQLITE_PRIVATE int sqlite3GetUInt32(const char *z, u32 *pI){
+ u64 v = 0;
+ int i;
+ for(i=0; sqlite3Isdigit(z[i]); i++){
+ v = v*10 + z[i] - '0';
+ if( v>4294967296LL ){ *pI = 0; return 0; }
+ }
+ if( i==0 || z[i]!=0 ){ *pI = 0; return 0; }
+ *pI = (u32)v;
+ return 1;
+}
+
/*
** The variable-length integer encoding is as follows:
**
@@ -36528,7 +32107,7 @@ static int SQLITE_NOINLINE putVarint64(unsigned char *p, u64 v){
v >>= 7;
}
return 9;
- }
+ }
n = 0;
do{
buf[n++] = (u8)((v & 0x7f) | 0x80);
@@ -36728,8 +32307,8 @@ SQLITE_PRIVATE u8 sqlite3GetVarint(const unsigned char *p, u64 *v){
** If the varint stored in p[0] is larger than can fit in a 32-bit unsigned
** integer, then set *v to 0xffffffff.
**
-** A MACRO version, getVarint32, is provided which inlines the
-** single-byte case. All code should use the MACRO version as
+** A MACRO version, getVarint32, is provided which inlines the
+** single-byte case. All code should use the MACRO version as
** this function assumes the single-byte case has already been handled.
*/
SQLITE_PRIVATE u8 sqlite3GetVarint32(const unsigned char *p, u32 *v){
@@ -36790,8 +32369,7 @@ SQLITE_PRIVATE u8 sqlite3GetVarint32(const unsigned char *p, u32 *v){
u64 v64;
u8 n;
- p -= 2;
- n = sqlite3GetVarint(p, &v64);
+ n = sqlite3GetVarint(p-2, &v64);
assert( n>3 && n<=9 );
if( (v64 & SQLITE_MAX_U32)!=v64 ){
*v = 0xffffffff;
@@ -36918,7 +32496,7 @@ SQLITE_PRIVATE u8 sqlite3HexToInt(int h){
return (u8)(h & 0xf);
}
-#if !defined(SQLITE_OMIT_BLOB_LITERAL) || defined(SQLITE_HAS_CODEC)
+#if !defined(SQLITE_OMIT_BLOB_LITERAL)
/*
** Convert a BLOB literal of the form "x'hhhhhh'" into its binary
** value. Return a pointer to its binary value. Space to hold the
@@ -36939,7 +32517,7 @@ SQLITE_PRIVATE void *sqlite3HexToBlob(sqlite3 *db, const char *z, int n){
}
return zBlob;
}
-#endif /* !SQLITE_OMIT_BLOB_LITERAL || SQLITE_HAS_CODEC */
+#endif /* !SQLITE_OMIT_BLOB_LITERAL */
/*
** Log an error that is an API call on a connection pointer that should
@@ -36947,7 +32525,7 @@ SQLITE_PRIVATE void *sqlite3HexToBlob(sqlite3 *db, const char *z, int n){
** argument. The zType is a word like "NULL" or "closed" or "invalid".
*/
static void logBadConnection(const char *zType){
- sqlite3_log(SQLITE_MISUSE,
+ sqlite3_log(SQLITE_MISUSE,
"API call with %s database connection pointer",
zType
);
@@ -37021,7 +32599,7 @@ SQLITE_PRIVATE int sqlite3AddInt64(i64 *pA, i64 iB){
if( iA<0 && -(iA + LARGEST_INT64) > iB + 1 ) return 1;
}
*pA += iB;
- return 0;
+ return 0;
#endif
}
SQLITE_PRIVATE int sqlite3SubInt64(i64 *pA, i64 iB){
@@ -37062,7 +32640,7 @@ SQLITE_PRIVATE int sqlite3MulInt64(i64 *pA, i64 iB){
}
/*
-** Compute the absolute value of a 32-bit signed integer, of possible. Or
+** Compute the absolute value of a 32-bit signed integer, of possible. Or
** if the integer has a value of -2147483648, return +2147483647
*/
SQLITE_PRIVATE int sqlite3AbsInt32(int x){
@@ -37102,11 +32680,11 @@ SQLITE_PRIVATE void sqlite3FileSuffix3(const char *zBaseFilename, char *z){
}
#endif
-/*
+/*
** Find (an approximate) sum of two LogEst values. This computation is
** not a simple "+" operator because LogEst is stored as a logarithmic
** value.
-**
+**
*/
SQLITE_PRIVATE LogEst sqlite3LogEstAdd(LogEst a, LogEst b){
static const unsigned char x[] = {
@@ -37220,8 +32798,8 @@ SQLITE_PRIVATE u64 sqlite3LogEstToInt(LogEst x){
** Conceptually:
**
** struct VList {
-** int nAlloc; // Number of allocated slots
-** int nUsed; // Number of used slots
+** int nAlloc; // Number of allocated slots
+** int nUsed; // Number of used slots
** struct VListEntry {
** int iValue; // Value for this entry
** int nSlot; // Slots used by this entry
@@ -37230,7 +32808,7 @@ SQLITE_PRIVATE u64 sqlite3LogEstToInt(LogEst x){
** }
**
** During code generation, pointers to the variable names within the
-** VList are taken. When that happens, nAlloc is set to zero as an
+** VList are taken. When that happens, nAlloc is set to zero as an
** indication that the VList may never again be enlarged, since the
** accompanying realloc() would invalidate the pointers.
*/
@@ -37421,7 +32999,7 @@ static int rehash(Hash *pH, unsigned int new_size){
/* The inability to allocates space for a larger hash table is
** a performance hit but it is not a fatal error. So mark the
- ** allocation as a benign. Use sqlite3Malloc()/memset(0) instead of
+ ** allocation as a benign. Use sqlite3Malloc()/memset(0) instead of
** sqlite3MallocZero() to make the allocation, as sqlite3MallocZero()
** only zeroes the requested number of bytes whereas this module will
** use the actual amount of space allocated for the hash table (which
@@ -37473,7 +33051,7 @@ static HashElem *findElementWithHash(
if( pHash ) *pHash = h;
while( count-- ){
assert( elem!=0 );
- if( sqlite3StrICmp(elem->pKey,pKey)==0 ){
+ if( sqlite3StrICmp(elem->pKey,pKey)==0 ){
return elem;
}
elem = elem->next;
@@ -37491,7 +33069,7 @@ static void removeElementGivenHash(
){
struct _ht *pEntry;
if( elem->prev ){
- elem->prev->next = elem->next;
+ elem->prev->next = elem->next;
}else{
pH->first = elem->next;
}
@@ -37613,30 +33191,30 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){
/* 23 */ "SeekLE" OpHelp("key=r[P3@P4]"),
/* 24 */ "SeekGE" OpHelp("key=r[P3@P4]"),
/* 25 */ "SeekGT" OpHelp("key=r[P3@P4]"),
- /* 26 */ "IfNoHope" OpHelp("key=r[P3@P4]"),
- /* 27 */ "NoConflict" OpHelp("key=r[P3@P4]"),
- /* 28 */ "NotFound" OpHelp("key=r[P3@P4]"),
- /* 29 */ "Found" OpHelp("key=r[P3@P4]"),
- /* 30 */ "SeekRowid" OpHelp("intkey=r[P3]"),
- /* 31 */ "NotExists" OpHelp("intkey=r[P3]"),
- /* 32 */ "Last" OpHelp(""),
- /* 33 */ "IfSmaller" OpHelp(""),
- /* 34 */ "SorterSort" OpHelp(""),
- /* 35 */ "Sort" OpHelp(""),
- /* 36 */ "Rewind" OpHelp(""),
- /* 37 */ "IdxLE" OpHelp("key=r[P3@P4]"),
- /* 38 */ "IdxGT" OpHelp("key=r[P3@P4]"),
- /* 39 */ "IdxLT" OpHelp("key=r[P3@P4]"),
- /* 40 */ "IdxGE" OpHelp("key=r[P3@P4]"),
- /* 41 */ "RowSetRead" OpHelp("r[P3]=rowset(P1)"),
- /* 42 */ "RowSetTest" OpHelp("if r[P3] in rowset(P1) goto P2"),
+ /* 26 */ "IfNotOpen" OpHelp("if( !csr[P1] ) goto P2"),
+ /* 27 */ "IfNoHope" OpHelp("key=r[P3@P4]"),
+ /* 28 */ "NoConflict" OpHelp("key=r[P3@P4]"),
+ /* 29 */ "NotFound" OpHelp("key=r[P3@P4]"),
+ /* 30 */ "Found" OpHelp("key=r[P3@P4]"),
+ /* 31 */ "SeekRowid" OpHelp("intkey=r[P3]"),
+ /* 32 */ "NotExists" OpHelp("intkey=r[P3]"),
+ /* 33 */ "Last" OpHelp(""),
+ /* 34 */ "IfSmaller" OpHelp(""),
+ /* 35 */ "SorterSort" OpHelp(""),
+ /* 36 */ "Sort" OpHelp(""),
+ /* 37 */ "Rewind" OpHelp(""),
+ /* 38 */ "IdxLE" OpHelp("key=r[P3@P4]"),
+ /* 39 */ "IdxGT" OpHelp("key=r[P3@P4]"),
+ /* 40 */ "IdxLT" OpHelp("key=r[P3@P4]"),
+ /* 41 */ "IdxGE" OpHelp("key=r[P3@P4]"),
+ /* 42 */ "RowSetRead" OpHelp("r[P3]=rowset(P1)"),
/* 43 */ "Or" OpHelp("r[P3]=(r[P1] || r[P2])"),
/* 44 */ "And" OpHelp("r[P3]=(r[P1] && r[P2])"),
- /* 45 */ "Program" OpHelp(""),
- /* 46 */ "FkIfZero" OpHelp("if fkctr[P1]==0 goto P2"),
- /* 47 */ "IfPos" OpHelp("if r[P1]>0 then r[P1]-=P3, goto P2"),
- /* 48 */ "IfNotZero" OpHelp("if r[P1]!=0 then r[P1]--, goto P2"),
- /* 49 */ "DecrJumpZero" OpHelp("if (--r[P1])==0 goto P2"),
+ /* 45 */ "RowSetTest" OpHelp("if r[P3] in rowset(P1) goto P2"),
+ /* 46 */ "Program" OpHelp(""),
+ /* 47 */ "FkIfZero" OpHelp("if fkctr[P1]==0 goto P2"),
+ /* 48 */ "IfPos" OpHelp("if r[P1]>0 then r[P1]-=P3, goto P2"),
+ /* 49 */ "IfNotZero" OpHelp("if r[P1]!=0 then r[P1]--, goto P2"),
/* 50 */ "IsNull" OpHelp("if r[P1]==NULL goto P2"),
/* 51 */ "NotNull" OpHelp("if r[P1]!=NULL goto P2"),
/* 52 */ "Ne" OpHelp("IF r[P3]!=r[P1]"),
@@ -37646,48 +33224,48 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){
/* 56 */ "Lt" OpHelp("IF r[P3]=r[P1]"),
/* 58 */ "ElseNotEq" OpHelp(""),
- /* 59 */ "IncrVacuum" OpHelp(""),
- /* 60 */ "VNext" OpHelp(""),
- /* 61 */ "Init" OpHelp("Start at P2"),
- /* 62 */ "PureFunc" OpHelp("r[P3]=func(r[P2@P5])"),
- /* 63 */ "Function" OpHelp("r[P3]=func(r[P2@P5])"),
- /* 64 */ "Return" OpHelp(""),
- /* 65 */ "EndCoroutine" OpHelp(""),
- /* 66 */ "HaltIfNull" OpHelp("if r[P3]=null halt"),
- /* 67 */ "Halt" OpHelp(""),
- /* 68 */ "Integer" OpHelp("r[P2]=P1"),
- /* 69 */ "Int64" OpHelp("r[P2]=P4"),
- /* 70 */ "String" OpHelp("r[P2]='P4' (len=P1)"),
- /* 71 */ "Null" OpHelp("r[P2..P3]=NULL"),
- /* 72 */ "SoftNull" OpHelp("r[P1]=NULL"),
- /* 73 */ "Blob" OpHelp("r[P2]=P4 (len=P1)"),
- /* 74 */ "Variable" OpHelp("r[P2]=parameter(P1,P4)"),
- /* 75 */ "Move" OpHelp("r[P2@P3]=r[P1@P3]"),
- /* 76 */ "Copy" OpHelp("r[P2@P3+1]=r[P1@P3+1]"),
- /* 77 */ "SCopy" OpHelp("r[P2]=r[P1]"),
- /* 78 */ "IntCopy" OpHelp("r[P2]=r[P1]"),
- /* 79 */ "ResultRow" OpHelp("output=r[P1@P2]"),
- /* 80 */ "CollSeq" OpHelp(""),
- /* 81 */ "AddImm" OpHelp("r[P1]=r[P1]+P2"),
- /* 82 */ "RealAffinity" OpHelp(""),
- /* 83 */ "Cast" OpHelp("affinity(r[P1])"),
- /* 84 */ "Permutation" OpHelp(""),
- /* 85 */ "Compare" OpHelp("r[P1@P3] <-> r[P2@P3]"),
- /* 86 */ "IsTrue" OpHelp("r[P2] = coalesce(r[P1]==TRUE,P3) ^ P4"),
- /* 87 */ "Offset" OpHelp("r[P3] = sqlite_offset(P1)"),
- /* 88 */ "Column" OpHelp("r[P3]=PX"),
- /* 89 */ "Affinity" OpHelp("affinity(r[P1@P2])"),
- /* 90 */ "MakeRecord" OpHelp("r[P3]=mkrec(r[P1@P2])"),
- /* 91 */ "Count" OpHelp("r[P2]=count()"),
- /* 92 */ "ReadCookie" OpHelp(""),
- /* 93 */ "SetCookie" OpHelp(""),
- /* 94 */ "ReopenIdx" OpHelp("root=P2 iDb=P3"),
- /* 95 */ "OpenRead" OpHelp("root=P2 iDb=P3"),
- /* 96 */ "OpenWrite" OpHelp("root=P2 iDb=P3"),
- /* 97 */ "OpenDup" OpHelp(""),
- /* 98 */ "OpenAutoindex" OpHelp("nColumn=P2"),
- /* 99 */ "OpenEphemeral" OpHelp("nColumn=P2"),
- /* 100 */ "SorterOpen" OpHelp(""),
+ /* 59 */ "DecrJumpZero" OpHelp("if (--r[P1])==0 goto P2"),
+ /* 60 */ "IncrVacuum" OpHelp(""),
+ /* 61 */ "VNext" OpHelp(""),
+ /* 62 */ "Init" OpHelp("Start at P2"),
+ /* 63 */ "PureFunc" OpHelp("r[P3]=func(r[P2@NP])"),
+ /* 64 */ "Function" OpHelp("r[P3]=func(r[P2@NP])"),
+ /* 65 */ "Return" OpHelp(""),
+ /* 66 */ "EndCoroutine" OpHelp(""),
+ /* 67 */ "HaltIfNull" OpHelp("if r[P3]=null halt"),
+ /* 68 */ "Halt" OpHelp(""),
+ /* 69 */ "Integer" OpHelp("r[P2]=P1"),
+ /* 70 */ "Int64" OpHelp("r[P2]=P4"),
+ /* 71 */ "String" OpHelp("r[P2]='P4' (len=P1)"),
+ /* 72 */ "Null" OpHelp("r[P2..P3]=NULL"),
+ /* 73 */ "SoftNull" OpHelp("r[P1]=NULL"),
+ /* 74 */ "Blob" OpHelp("r[P2]=P4 (len=P1)"),
+ /* 75 */ "Variable" OpHelp("r[P2]=parameter(P1,P4)"),
+ /* 76 */ "Move" OpHelp("r[P2@P3]=r[P1@P3]"),
+ /* 77 */ "Copy" OpHelp("r[P2@P3+1]=r[P1@P3+1]"),
+ /* 78 */ "SCopy" OpHelp("r[P2]=r[P1]"),
+ /* 79 */ "IntCopy" OpHelp("r[P2]=r[P1]"),
+ /* 80 */ "ResultRow" OpHelp("output=r[P1@P2]"),
+ /* 81 */ "CollSeq" OpHelp(""),
+ /* 82 */ "AddImm" OpHelp("r[P1]=r[P1]+P2"),
+ /* 83 */ "RealAffinity" OpHelp(""),
+ /* 84 */ "Cast" OpHelp("affinity(r[P1])"),
+ /* 85 */ "Permutation" OpHelp(""),
+ /* 86 */ "Compare" OpHelp("r[P1@P3] <-> r[P2@P3]"),
+ /* 87 */ "IsTrue" OpHelp("r[P2] = coalesce(r[P1]==TRUE,P3) ^ P4"),
+ /* 88 */ "Offset" OpHelp("r[P3] = sqlite_offset(P1)"),
+ /* 89 */ "Column" OpHelp("r[P3]=PX"),
+ /* 90 */ "Affinity" OpHelp("affinity(r[P1@P2])"),
+ /* 91 */ "MakeRecord" OpHelp("r[P3]=mkrec(r[P1@P2])"),
+ /* 92 */ "Count" OpHelp("r[P2]=count()"),
+ /* 93 */ "ReadCookie" OpHelp(""),
+ /* 94 */ "SetCookie" OpHelp(""),
+ /* 95 */ "ReopenIdx" OpHelp("root=P2 iDb=P3"),
+ /* 96 */ "OpenRead" OpHelp("root=P2 iDb=P3"),
+ /* 97 */ "OpenWrite" OpHelp("root=P2 iDb=P3"),
+ /* 98 */ "OpenDup" OpHelp(""),
+ /* 99 */ "OpenAutoindex" OpHelp("nColumn=P2"),
+ /* 100 */ "OpenEphemeral" OpHelp("nColumn=P2"),
/* 101 */ "BitAnd" OpHelp("r[P3]=r[P1]&r[P2]"),
/* 102 */ "BitOr" OpHelp("r[P3]=r[P1]|r[P2]"),
/* 103 */ "ShiftLeft" OpHelp("r[P3]=r[P2]<0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1)"),
+ /* 131 */ "SorterInsert" OpHelp("key=r[P2]"),
+ /* 132 */ "IdxDelete" OpHelp("key=r[P2@P3]"),
+ /* 133 */ "DeferredSeek" OpHelp("Move P3 to P1.rowid if needed"),
+ /* 134 */ "IdxRowid" OpHelp("r[P2]=rowid"),
+ /* 135 */ "FinishSeek" OpHelp(""),
+ /* 136 */ "Destroy" OpHelp(""),
+ /* 137 */ "Clear" OpHelp(""),
+ /* 138 */ "ResetSorter" OpHelp(""),
+ /* 139 */ "CreateBtree" OpHelp("r[P2]=root iDb=P1 flags=P3"),
+ /* 140 */ "SqlExec" OpHelp(""),
+ /* 141 */ "ParseSchema" OpHelp(""),
+ /* 142 */ "LoadAnalysis" OpHelp(""),
+ /* 143 */ "DropTable" OpHelp(""),
+ /* 144 */ "DropIndex" OpHelp(""),
+ /* 145 */ "DropTrigger" OpHelp(""),
+ /* 146 */ "IntegrityCk" OpHelp(""),
+ /* 147 */ "RowSetAdd" OpHelp("rowset(P1)=r[P2]"),
+ /* 148 */ "Param" OpHelp(""),
+ /* 149 */ "FkCounter" OpHelp("fkctr[P1]+=P2"),
/* 150 */ "Real" OpHelp("r[P2]=P4"),
- /* 151 */ "AggInverse" OpHelp("accum=r[P3] inverse(r[P2@P5])"),
- /* 152 */ "AggStep" OpHelp("accum=r[P3] step(r[P2@P5])"),
- /* 153 */ "AggStep1" OpHelp("accum=r[P3] step(r[P2@P5])"),
- /* 154 */ "AggValue" OpHelp("r[P3]=value N=P2"),
- /* 155 */ "AggFinal" OpHelp("accum=r[P1] N=P2"),
- /* 156 */ "Expire" OpHelp(""),
- /* 157 */ "TableLock" OpHelp("iDb=P1 root=P2 write=P3"),
- /* 158 */ "VBegin" OpHelp(""),
- /* 159 */ "VCreate" OpHelp(""),
- /* 160 */ "VDestroy" OpHelp(""),
- /* 161 */ "VOpen" OpHelp(""),
- /* 162 */ "VColumn" OpHelp("r[P3]=vcolumn(P2)"),
- /* 163 */ "VRename" OpHelp(""),
- /* 164 */ "Pagecount" OpHelp(""),
- /* 165 */ "MaxPgcnt" OpHelp(""),
- /* 166 */ "Trace" OpHelp(""),
- /* 167 */ "CursorHint" OpHelp(""),
- /* 168 */ "Noop" OpHelp(""),
- /* 169 */ "Explain" OpHelp(""),
- /* 170 */ "Abortable" OpHelp(""),
+ /* 151 */ "MemMax" OpHelp("r[P1]=max(r[P1],r[P2])"),
+ /* 152 */ "OffsetLimit" OpHelp("if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1)"),
+ /* 153 */ "AggInverse" OpHelp("accum=r[P3] inverse(r[P2@P5])"),
+ /* 154 */ "AggStep" OpHelp("accum=r[P3] step(r[P2@P5])"),
+ /* 155 */ "AggStep1" OpHelp("accum=r[P3] step(r[P2@P5])"),
+ /* 156 */ "AggValue" OpHelp("r[P3]=value N=P2"),
+ /* 157 */ "AggFinal" OpHelp("accum=r[P1] N=P2"),
+ /* 158 */ "Expire" OpHelp(""),
+ /* 159 */ "CursorLock" OpHelp(""),
+ /* 160 */ "CursorUnlock" OpHelp(""),
+ /* 161 */ "TableLock" OpHelp("iDb=P1 root=P2 write=P3"),
+ /* 162 */ "VBegin" OpHelp(""),
+ /* 163 */ "VCreate" OpHelp(""),
+ /* 164 */ "VDestroy" OpHelp(""),
+ /* 165 */ "VOpen" OpHelp(""),
+ /* 166 */ "VColumn" OpHelp("r[P3]=vcolumn(P2)"),
+ /* 167 */ "VRename" OpHelp(""),
+ /* 168 */ "Pagecount" OpHelp(""),
+ /* 169 */ "MaxPgcnt" OpHelp(""),
+ /* 170 */ "Trace" OpHelp(""),
+ /* 171 */ "CursorHint" OpHelp(""),
+ /* 172 */ "ReleaseReg" OpHelp("release r[P1@P2] mask P3"),
+ /* 173 */ "Noop" OpHelp(""),
+ /* 174 */ "Explain" OpHelp(""),
+ /* 175 */ "Abortable" OpHelp(""),
};
return azName[i];
}
@@ -37828,7 +33411,7 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){
** Styles 4, 5, and 7 are only available of SQLITE_ENABLE_LOCKING_STYLE
** is defined to 1. The SQLITE_ENABLE_LOCKING_STYLE also enables automatic
** selection of the appropriate locking style based on the filesystem
-** where the database is located.
+** where the database is located.
*/
#if !defined(SQLITE_ENABLE_LOCKING_STYLE)
# if defined(__APPLE__)
@@ -37954,7 +33537,7 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){
#define osGetpid(X) (pid_t)getpid()
/*
-** Only set the lastErrno if the error code is a real error and not
+** Only set the lastErrno if the error code is a real error and not
** a normal expected return code of SQLITE_BUSY or SQLITE_OK
*/
#define IS_LOCK_ERROR(x) ((x != SQLITE_OK) && (x != SQLITE_BUSY))
@@ -38022,7 +33605,7 @@ struct unixFile {
** whenever any part of the database changes. An assertion fault will
** occur if a file is updated without also updating the transaction
** counter. This test is made to avoid new problems similar to the
- ** one described by ticket #3584.
+ ** one described by ticket #3584.
*/
unsigned char transCntrChng; /* True if the transaction counter changed */
unsigned char dbUpdate; /* True if any part of database file changed */
@@ -38031,7 +33614,7 @@ struct unixFile {
#endif
#ifdef SQLITE_TEST
- /* In test mode, increase the size of this structure a bit so that
+ /* In test mode, increase the size of this structure a bit so that
** it is larger than the struct CrashFile defined in test6.c.
*/
char aPadding[32];
@@ -38121,7 +33704,7 @@ static pid_t randomnessPid = 0;
******************************************************************************
**
** This file contains inline asm code for retrieving "high-performance"
-** counters for x86 class CPUs.
+** counters for x86 and x86_64 class CPUs.
*/
#ifndef SQLITE_HWTIME_H
#define SQLITE_HWTIME_H
@@ -38132,8 +33715,9 @@ static pid_t randomnessPid = 0;
** processor and returns that value. This can be used for high-res
** profiling.
*/
-#if (defined(__GNUC__) || defined(_MSC_VER)) && \
- (defined(i386) || defined(__i386__) || defined(_M_IX86))
+#if !defined(__STRICT_ANSI__) && \
+ (defined(__GNUC__) || defined(_MSC_VER)) && \
+ (defined(i386) || defined(__i386__) || defined(_M_IX86))
#if defined(__GNUC__)
@@ -38154,15 +33738,15 @@ static pid_t randomnessPid = 0;
#endif
-#elif (defined(__GNUC__) && defined(__x86_64__))
+#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__x86_64__))
__inline__ sqlite_uint64 sqlite3Hwtime(void){
unsigned long val;
__asm__ __volatile__ ("rdtsc" : "=A" (val));
return val;
}
-
-#elif (defined(__GNUC__) && defined(__ppc__))
+
+#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__ppc__))
__inline__ sqlite_uint64 sqlite3Hwtime(void){
unsigned long long retval;
@@ -38179,14 +33763,13 @@ static pid_t randomnessPid = 0;
#else
- #error Need implementation of sqlite3Hwtime() for your platform.
-
/*
- ** To compile without implementing sqlite3Hwtime() for your platform,
- ** you can remove the above #error and use the following
- ** stub function. You will lose timing support for many
- ** of the debugging and testing utilities, but it should at
- ** least compile and run.
+ ** asm() is needed for hardware timing support. Without asm(),
+ ** disable the sqlite3Hwtime() routine.
+ **
+ ** sqlite3Hwtime() is only used for some obscure debugging
+ ** and analysis configurations, not in any deliverable, so this
+ ** should not be a great loss.
*/
SQLITE_PRIVATE sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); }
@@ -38374,7 +33957,7 @@ static struct unix_syscall {
#ifdef __DJGPP__
{ "fstat", 0, 0 },
#define osFstat(a,b,c) 0
-#else
+#else
{ "fstat", (sqlite3_syscall_ptr)fstat, 0 },
#define osFstat ((int(*)(int,struct stat*))aSyscall[5].pCurrent)
#endif
@@ -38612,7 +34195,7 @@ static const char *unixNextSystemCall(sqlite3_vfs *p, const char *zName){
/*
** Do not accept any file descriptor less than this value, in order to avoid
-** opening database file using file descriptors that are commonly used for
+** opening database file using file descriptors that are commonly used for
** standard input, output, and error.
*/
#ifndef SQLITE_MINIMUM_FILE_DESCRIPTOR
@@ -38651,17 +34234,17 @@ static int robust_open(const char *z, int f, mode_t m){
}
if( fd>=SQLITE_MINIMUM_FILE_DESCRIPTOR ) break;
osClose(fd);
- sqlite3_log(SQLITE_WARNING,
+ sqlite3_log(SQLITE_WARNING,
"attempt to open \"%s\" as file descriptor %d", z, fd);
fd = -1;
- if( osOpen("/dev/null", f, m)<0 ) break;
+ if( osOpen("/dev/null", O_RDONLY, m)<0 ) break;
}
if( fd>=0 ){
if( m!=0 ){
struct stat statbuf;
- if( osFstat(fd, &statbuf)==0
+ if( osFstat(fd, &statbuf)==0
&& statbuf.st_size==0
- && (statbuf.st_mode&0777)!=m
+ && (statbuf.st_mode&0777)!=m
){
osFchmod(fd, m);
}
@@ -38676,11 +34259,11 @@ static int robust_open(const char *z, int f, mode_t m){
/*
** Helper functions to obtain and relinquish the global mutex. The
** global mutex is used to protect the unixInodeInfo and
-** vxworksFileId objects used by this file, all of which may be
+** vxworksFileId objects used by this file, all of which may be
** shared by multiple threads.
**
-** Function unixMutexHeld() is used to assert() that the global mutex
-** is held when required. This function is only used as part of assert()
+** Function unixMutexHeld() is used to assert() that the global mutex
+** is held when required. This function is only used as part of assert()
** statements. e.g.
**
** unixEnterMutex()
@@ -38802,7 +34385,7 @@ static int lockTrace(int fd, int op, struct flock *p){
static int robust_ftruncate(int h, sqlite3_int64 sz){
int rc;
#ifdef __ANDROID__
- /* On Android, ftruncate() always uses 32-bit offsets, even if
+ /* On Android, ftruncate() always uses 32-bit offsets, even if
** _FILE_OFFSET_BITS=64 is defined. This means it is unsafe to attempt to
** truncate a file to any size larger than 2GiB. Silently ignore any
** such attempts. */
@@ -38818,32 +34401,32 @@ static int robust_ftruncate(int h, sqlite3_int64 sz){
** This routine translates a standard POSIX errno code into something
** useful to the clients of the sqlite3 functions. Specifically, it is
** intended to translate a variety of "try again" errors into SQLITE_BUSY
-** and a variety of "please close the file descriptor NOW" errors into
+** and a variety of "please close the file descriptor NOW" errors into
** SQLITE_IOERR
-**
+**
** Errors during initialization of locks, or file system support for locks,
** should handle ENOLCK, ENOTSUP, EOPNOTSUPP separately.
*/
static int sqliteErrorFromPosixError(int posixError, int sqliteIOErr) {
- assert( (sqliteIOErr == SQLITE_IOERR_LOCK) ||
- (sqliteIOErr == SQLITE_IOERR_UNLOCK) ||
+ assert( (sqliteIOErr == SQLITE_IOERR_LOCK) ||
+ (sqliteIOErr == SQLITE_IOERR_UNLOCK) ||
(sqliteIOErr == SQLITE_IOERR_RDLOCK) ||
(sqliteIOErr == SQLITE_IOERR_CHECKRESERVEDLOCK) );
switch (posixError) {
- case EACCES:
+ case EACCES:
case EAGAIN:
case ETIMEDOUT:
case EBUSY:
case EINTR:
- case ENOLCK:
- /* random NFS retry error, unless during file system support
+ case ENOLCK:
+ /* random NFS retry error, unless during file system support
* introspection, in which it actually means what it says */
return SQLITE_BUSY;
-
- case EPERM:
+
+ case EPERM:
return SQLITE_PERM;
-
- default:
+
+ default:
return sqliteIOErr;
}
}
@@ -38858,7 +34441,7 @@ static int sqliteErrorFromPosixError(int posixError, int sqliteIOErr) {
**
** A pointer to an instance of the following structure can be used as a
** unique file ID in VxWorks. Each instance of this structure contains
-** a copy of the canonical filename. There is also a reference count.
+** a copy of the canonical filename. There is also a reference count.
** The structure is reclaimed when the number of pointers to it drops to
** zero.
**
@@ -38874,7 +34457,7 @@ struct vxworksFileId {
};
#if OS_VXWORKS
-/*
+/*
** All unique filenames are held on a linked list headed by this
** variable:
*/
@@ -38946,7 +34529,7 @@ static struct vxworksFileId *vxworksFindFileId(const char *zAbsoluteName){
*/
unixEnterMutex();
for(pCandidate=vxworksFileList; pCandidate; pCandidate=pCandidate->pNext){
- if( pCandidate->nName==n
+ if( pCandidate->nName==n
&& memcmp(pCandidate->zCanonicalName, pNew->zCanonicalName, n)==0
){
sqlite3_free(pNew);
@@ -39039,7 +34622,7 @@ static void vxworksReleaseFileId(struct vxworksFileId *pId){
** cnt>0 means there are cnt shared locks on the file.
**
** Any attempt to lock or unlock a file first checks the locking
-** structure. The fcntl() system call is only invoked to set a
+** structure. The fcntl() system call is only invoked to set a
** POSIX lock if the internal lock structure transitions between
** a locked and an unlocked state.
**
@@ -39072,7 +34655,7 @@ static void vxworksReleaseFileId(struct vxworksFileId *pId){
**
** SQLite used to support LinuxThreads. But support for LinuxThreads
** was dropped beginning with version 3.7.0. SQLite will still work with
-** LinuxThreads provided that (1) there is no more than one connection
+** LinuxThreads provided that (1) there is no more than one connection
** per database file in the same process and (2) database connections
** do not move across threads.
*/
@@ -39089,7 +34672,7 @@ struct unixFileId {
/* We are told that some versions of Android contain a bug that
** sizes ino_t at only 32-bits instead of 64-bits. (See
** https://android-review.googlesource.com/#/c/115351/3/dist/sqlite3.c)
- ** To work around this, always allocate 64-bits for the inode number.
+ ** To work around this, always allocate 64-bits for the inode number.
** On small machines that only have 32-bit inodes, this wastes 4 bytes,
** but that should not be a big deal. */
/* WAS: ino_t ino; */
@@ -39177,7 +34760,7 @@ int unixFileMutexNotheld(unixFile *pFile){
** strerror_r().
**
** The first argument passed to the macro should be the error code that
-** will be returned to SQLite (e.g. SQLITE_IOERR_DELETE, SQLITE_CANTOPEN).
+** will be returned to SQLite (e.g. SQLITE_IOERR_DELETE, SQLITE_CANTOPEN).
** The two subsequent arguments should be the name of the OS function that
** failed (e.g. "unlink", "open") and the associated file-system path,
** if any.
@@ -39195,7 +34778,7 @@ static int unixLogErrorAtLine(
/* If this is not a threadsafe build (SQLITE_THREADSAFE==0), then use
** the strerror() function to obtain the human-readable error message
** equivalent to errno. Otherwise, use strerror_r().
- */
+ */
#if SQLITE_THREADSAFE && defined(HAVE_STRERROR_R)
char aErr[80];
memset(aErr, 0, sizeof(aErr));
@@ -39203,18 +34786,18 @@ static int unixLogErrorAtLine(
/* If STRERROR_R_CHAR_P (set by autoconf scripts) or __USE_GNU is defined,
** assume that the system provides the GNU version of strerror_r() that
- ** returns a pointer to a buffer containing the error message. That pointer
- ** may point to aErr[], or it may point to some static storage somewhere.
- ** Otherwise, assume that the system provides the POSIX version of
+ ** returns a pointer to a buffer containing the error message. That pointer
+ ** may point to aErr[], or it may point to some static storage somewhere.
+ ** Otherwise, assume that the system provides the POSIX version of
** strerror_r(), which always writes an error message into aErr[].
**
** If the code incorrectly assumes that it is the POSIX version that is
** available, the error message will often be an empty string. Not a
- ** huge problem. Incorrectly concluding that the GNU version is available
+ ** huge problem. Incorrectly concluding that the GNU version is available
** could lead to a segfault though.
*/
#if defined(STRERROR_R_CHAR_P) || defined(__USE_GNU)
- zErr =
+ zErr =
# endif
strerror_r(iErrno, aErr, sizeof(aErr)-1);
@@ -39265,7 +34848,7 @@ static void storeLastErrno(unixFile *pFile, int error){
/*
** Close all file descriptors accumuated in the unixInodeInfo->pUnused list.
-*/
+*/
static void closePendingFds(unixFile *pFile){
unixInodeInfo *pInode = pFile->pInode;
UnixUnusedFd *p;
@@ -39420,7 +35003,7 @@ static int fileHasMoved(unixFile *pFile){
#else
struct stat buf;
return pFile->pInode!=0 &&
- (osStat(pFile->zPath, &buf)!=0
+ (osStat(pFile->zPath, &buf)!=0
|| (u64)buf.st_ino!=pFile->pInode->fileId.ino);
#endif
}
@@ -39501,7 +35084,7 @@ static int unixCheckReservedLock(sqlite3_file *id, int *pResOut){
}
}
#endif
-
+
sqlite3_mutex_leave(pFile->pInode->pLockMutex);
OSTRACE(("TEST WR-LOCK %d %d %d (unix)\n", pFile->h, rc, reserved));
@@ -39530,8 +35113,9 @@ static int osSetPosixAdvisoryLock(
struct flock *pLock, /* The description of the lock */
unixFile *pFile /* Structure holding timeout value */
){
+ int tm = pFile->iBusyTimeout;
int rc = osFcntl(h,F_SETLK,pLock);
- while( rc<0 && pFile->iBusyTimeout>0 ){
+ while( rc<0 && tm>0 ){
/* On systems that support some kind of blocking file lock with a timeout,
** make appropriate changes here to invoke that blocking file lock. On
** generic posix, however, there is no such API. So we simply try the
@@ -39539,7 +35123,7 @@ static int osSetPosixAdvisoryLock(
** the lock is obtained. */
usleep(1000);
rc = osFcntl(h,F_SETLK,pLock);
- pFile->iBusyTimeout--;
+ tm--;
}
return rc;
}
@@ -39547,7 +35131,7 @@ static int osSetPosixAdvisoryLock(
/*
-** Attempt to set a system-lock on the file pFile. The lock is
+** Attempt to set a system-lock on the file pFile. The lock is
** described by pLock.
**
** If the pFile was opened read/write from unix-excl, then the only lock
@@ -39639,7 +35223,7 @@ static int unixLock(sqlite3_file *id, int eFileLock){
**
** A process may only obtain a RESERVED lock after it has a SHARED lock.
** A RESERVED lock is implemented by grabbing a write-lock on the
- ** 'reserved byte'.
+ ** 'reserved byte'.
**
** A process may only obtain a PENDING lock after it has obtained a
** SHARED lock. A PENDING lock is implemented by obtaining a write-lock
@@ -39653,7 +35237,7 @@ static int unixLock(sqlite3_file *id, int eFileLock){
** implemented by obtaining a write-lock on the entire 'shared byte
** range'. Since all other locks require a read-lock on one of the bytes
** within this range, this ensures that no other locks are held on the
- ** database.
+ ** database.
*/
int rc = SQLITE_OK;
unixFile *pFile = (unixFile*)id;
@@ -39694,7 +35278,7 @@ static int unixLock(sqlite3_file *id, int eFileLock){
/* If some thread using this PID has a lock via a different unixFile*
** handle that precludes the requested lock, return BUSY.
*/
- if( (pFile->eFileLock!=pInode->eFileLock &&
+ if( (pFile->eFileLock!=pInode->eFileLock &&
(pInode->eFileLock>=PENDING_LOCK || eFileLock>SHARED_LOCK))
){
rc = SQLITE_BUSY;
@@ -39705,7 +35289,7 @@ static int unixLock(sqlite3_file *id, int eFileLock){
** has a SHARED or RESERVED lock, then increment reference counts and
** return SQLITE_OK.
*/
- if( eFileLock==SHARED_LOCK &&
+ if( eFileLock==SHARED_LOCK &&
(pInode->eFileLock==SHARED_LOCK || pInode->eFileLock==RESERVED_LOCK) ){
assert( eFileLock==SHARED_LOCK );
assert( pFile->eFileLock==0 );
@@ -39723,7 +35307,7 @@ static int unixLock(sqlite3_file *id, int eFileLock){
*/
lock.l_len = 1L;
lock.l_whence = SEEK_SET;
- if( eFileLock==SHARED_LOCK
+ if( eFileLock==SHARED_LOCK
|| (eFileLock==EXCLUSIVE_LOCK && pFile->eFileLockpLockMutex);
- OSTRACE(("LOCK %d %s %s (unix)\n", pFile->h, azFileLock(eFileLock),
+ OSTRACE(("LOCK %d %s %s (unix)\n", pFile->h, azFileLock(eFileLock),
rc==SQLITE_OK ? "ok" : "failed"));
return rc;
}
@@ -39858,11 +35442,11 @@ static void setPendingFd(unixFile *pFile){
**
** If the locking level of the file descriptor is already at or below
** the requested locking level, this routine is a no-op.
-**
+**
** If handleNFSUnlock is true, then on downgrading an EXCLUSIVE_LOCK to SHARED
** the byte range is divided into 2 parts and the first part is unlocked then
-** set to a read lock, then the other part is simply unlocked. This works
-** around a bug in BSD NFS lockd (also seen on MacOSX 10.3+) that fails to
+** set to a read lock, then the other part is simply unlocked. This works
+** around a bug in BSD NFS lockd (also seen on MacOSX 10.3+) that fails to
** remove the write lock on a region when a read lock is set.
*/
static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){
@@ -39900,7 +35484,7 @@ static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){
/* downgrading to a shared lock on NFS involves clearing the write lock
** before establishing the readlock - to avoid a race condition we downgrade
- ** the lock in 2 blocks, so that part of the range will be covered by a
+ ** the lock in 2 blocks, so that part of the range will be covered by a
** write lock until the rest is covered by a read lock:
** 1: [WWWWW]
** 2: [....W]
@@ -39916,7 +35500,7 @@ static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){
if( handleNFSUnlock ){
int tErrno; /* Error code from system call errors */
off_t divSize = SHARED_SIZE - 1;
-
+
lock.l_type = F_UNLCK;
lock.l_whence = SEEK_SET;
lock.l_start = SHARED_FIRST;
@@ -39958,11 +35542,11 @@ static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){
lock.l_len = SHARED_SIZE;
if( unixFileLock(pFile, &lock) ){
/* In theory, the call to unixFileLock() cannot fail because another
- ** process is holding an incompatible lock. If it does, this
+ ** process is holding an incompatible lock. If it does, this
** indicates that the other process is not following the locking
** protocol. If this happens, return SQLITE_IOERR_RDLOCK. Returning
- ** SQLITE_BUSY would confuse the upper layer (in practice it causes
- ** an assert to fail). */
+ ** SQLITE_BUSY would confuse the upper layer (in practice it causes
+ ** an assert to fail). */
rc = SQLITE_IOERR_RDLOCK;
storeLastErrno(pFile, errno);
goto end_unlock;
@@ -40038,7 +35622,7 @@ static void unixUnmapfile(unixFile *pFd);
#endif
/*
-** This function performs the parts of the "close file" operation
+** This function performs the parts of the "close file" operation
** common to all locking schemes. It closes the directory and file
** handles, if they are valid, and sets all fields of the unixFile
** structure to 0.
@@ -40101,7 +35685,7 @@ static int unixClose(sqlite3_file *id){
if( pInode->nLock ){
/* If there are outstanding locks, do not actually close the file just
** yet because that would clear those locks. Instead, add the file
- ** descriptor to pInode->pUnused list. It will be automatically closed
+ ** descriptor to pInode->pUnused list. It will be automatically closed
** when the last lock is cleared.
*/
setPendingFd(pFile);
@@ -40201,7 +35785,7 @@ static int dotlockCheckReservedLock(sqlite3_file *id, int *pResOut) {
unixFile *pFile = (unixFile*)id;
SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; );
-
+
assert( pFile );
reserved = osAccess((const char*)pFile->lockingContext, 0)==0;
OSTRACE(("TEST WR-LOCK %d %d %d (dotlock)\n", pFile->h, rc, reserved));
@@ -40255,7 +35839,7 @@ static int dotlockLock(sqlite3_file *id, int eFileLock) {
#endif
return SQLITE_OK;
}
-
+
/* grab an exclusive lock */
rc = osMkdir(zLockFile, 0777);
if( rc<0 ){
@@ -40270,8 +35854,8 @@ static int dotlockLock(sqlite3_file *id, int eFileLock) {
}
}
return rc;
- }
-
+ }
+
/* got it, set the type and return ok */
pFile->eFileLock = eFileLock;
return rc;
@@ -40295,7 +35879,7 @@ static int dotlockUnlock(sqlite3_file *id, int eFileLock) {
OSTRACE(("UNLOCK %d %d was %d pid=%d (dotlock)\n", pFile->h, eFileLock,
pFile->eFileLock, osGetpid(0)));
assert( eFileLock<=SHARED_LOCK );
-
+
/* no-op if possible */
if( pFile->eFileLock==eFileLock ){
return SQLITE_OK;
@@ -40308,7 +35892,7 @@ static int dotlockUnlock(sqlite3_file *id, int eFileLock) {
pFile->eFileLock = SHARED_LOCK;
return SQLITE_OK;
}
-
+
/* To fully unlock the database, delete the lock file */
assert( eFileLock==NO_LOCK );
rc = osRmdir(zLockFile);
@@ -40320,7 +35904,7 @@ static int dotlockUnlock(sqlite3_file *id, int eFileLock) {
rc = SQLITE_IOERR_UNLOCK;
storeLastErrno(pFile, tErrno);
}
- return rc;
+ return rc;
}
pFile->eFileLock = NO_LOCK;
return SQLITE_OK;
@@ -40367,7 +35951,7 @@ static int robust_flock(int fd, int op){
#else
# define robust_flock(a,b) flock(a,b)
#endif
-
+
/*
** This routine checks if there is a RESERVED lock held on the specified
@@ -40379,16 +35963,16 @@ static int flockCheckReservedLock(sqlite3_file *id, int *pResOut){
int rc = SQLITE_OK;
int reserved = 0;
unixFile *pFile = (unixFile*)id;
-
+
SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; );
-
+
assert( pFile );
-
+
/* Check if a thread in this process holds such a lock */
if( pFile->eFileLock>SHARED_LOCK ){
reserved = 1;
}
-
+
/* Otherwise see if some other process holds it. */
if( !reserved ){
/* attempt to get the lock */
@@ -40399,7 +35983,7 @@ static int flockCheckReservedLock(sqlite3_file *id, int *pResOut){
if ( lrc ) {
int tErrno = errno;
/* unlock failed with an error */
- lrc = SQLITE_IOERR_UNLOCK;
+ lrc = SQLITE_IOERR_UNLOCK;
storeLastErrno(pFile, tErrno);
rc = lrc;
}
@@ -40407,7 +35991,7 @@ static int flockCheckReservedLock(sqlite3_file *id, int *pResOut){
int tErrno = errno;
reserved = 1;
/* someone else might have it reserved */
- lrc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK);
+ lrc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK);
if( IS_LOCK_ERROR(lrc) ){
storeLastErrno(pFile, tErrno);
rc = lrc;
@@ -40461,15 +36045,15 @@ static int flockLock(sqlite3_file *id, int eFileLock) {
assert( pFile );
- /* if we already have a lock, it is exclusive.
+ /* if we already have a lock, it is exclusive.
** Just adjust level and punt on outta here. */
if (pFile->eFileLock > NO_LOCK) {
pFile->eFileLock = eFileLock;
return SQLITE_OK;
}
-
+
/* grab an exclusive lock */
-
+
if (robust_flock(pFile->h, LOCK_EX | LOCK_NB)) {
int tErrno = errno;
/* didn't get, must be busy */
@@ -40481,7 +36065,7 @@ static int flockLock(sqlite3_file *id, int eFileLock) {
/* got it, set the type and return ok */
pFile->eFileLock = eFileLock;
}
- OSTRACE(("LOCK %d %s %s (flock)\n", pFile->h, azFileLock(eFileLock),
+ OSTRACE(("LOCK %d %s %s (flock)\n", pFile->h, azFileLock(eFileLock),
rc==SQLITE_OK ? "ok" : "failed"));
#ifdef SQLITE_IGNORE_FLOCK_LOCK_ERRORS
if( (rc & 0xff) == SQLITE_IOERR ){
@@ -40501,23 +36085,23 @@ static int flockLock(sqlite3_file *id, int eFileLock) {
*/
static int flockUnlock(sqlite3_file *id, int eFileLock) {
unixFile *pFile = (unixFile*)id;
-
+
assert( pFile );
OSTRACE(("UNLOCK %d %d was %d pid=%d (flock)\n", pFile->h, eFileLock,
pFile->eFileLock, osGetpid(0)));
assert( eFileLock<=SHARED_LOCK );
-
+
/* no-op if possible */
if( pFile->eFileLock==eFileLock ){
return SQLITE_OK;
}
-
+
/* shared can just be set because we always have an exclusive */
if (eFileLock==SHARED_LOCK) {
pFile->eFileLock = eFileLock;
return SQLITE_OK;
}
-
+
/* no, really, unlock. */
if( robust_flock(pFile->h, LOCK_UN) ){
#ifdef SQLITE_IGNORE_FLOCK_LOCK_ERRORS
@@ -40568,14 +36152,14 @@ static int semXCheckReservedLock(sqlite3_file *id, int *pResOut) {
unixFile *pFile = (unixFile*)id;
SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; );
-
+
assert( pFile );
/* Check if a thread in this process holds such a lock */
if( pFile->eFileLock>SHARED_LOCK ){
reserved = 1;
}
-
+
/* Otherwise see if some other process holds it. */
if( !reserved ){
sem_t *pSem = pFile->pInode->pSem;
@@ -40634,14 +36218,14 @@ static int semXLock(sqlite3_file *id, int eFileLock) {
sem_t *pSem = pFile->pInode->pSem;
int rc = SQLITE_OK;
- /* if we already have a lock, it is exclusive.
+ /* if we already have a lock, it is exclusive.
** Just adjust level and punt on outta here. */
if (pFile->eFileLock > NO_LOCK) {
pFile->eFileLock = eFileLock;
rc = SQLITE_OK;
goto sem_end_lock;
}
-
+
/* lock semaphore now but bail out when already locked. */
if( sem_trywait(pSem)==-1 ){
rc = SQLITE_BUSY;
@@ -40671,18 +36255,18 @@ static int semXUnlock(sqlite3_file *id, int eFileLock) {
OSTRACE(("UNLOCK %d %d was %d pid=%d (sem)\n", pFile->h, eFileLock,
pFile->eFileLock, osGetpid(0)));
assert( eFileLock<=SHARED_LOCK );
-
+
/* no-op if possible */
if( pFile->eFileLock==eFileLock ){
return SQLITE_OK;
}
-
+
/* shared can just be set because we always have an exclusive */
if (eFileLock==SHARED_LOCK) {
pFile->eFileLock = eFileLock;
return SQLITE_OK;
}
-
+
/* no, really unlock. */
if ( sem_post(pSem)==-1 ) {
int rc, tErrno = errno;
@@ -40690,7 +36274,7 @@ static int semXUnlock(sqlite3_file *id, int eFileLock) {
if( IS_LOCK_ERROR(rc) ){
storeLastErrno(pFile, tErrno);
}
- return rc;
+ return rc;
}
pFile->eFileLock = NO_LOCK;
return SQLITE_OK;
@@ -40756,7 +36340,7 @@ struct ByteRangeLockPB2
/*
** This is a utility for setting or clearing a bit-range lock on an
** AFP filesystem.
-**
+**
** Return SQLITE_OK on success, SQLITE_BUSY on failure.
*/
static int afpSetLock(
@@ -40768,14 +36352,14 @@ static int afpSetLock(
){
struct ByteRangeLockPB2 pb;
int err;
-
+
pb.unLockFlag = setLockFlag ? 0 : 1;
pb.startEndFlag = 0;
pb.offset = offset;
- pb.length = length;
+ pb.length = length;
pb.fd = pFile->h;
-
- OSTRACE(("AFPSETLOCK [%s] for %d%s in range %llx:%llx\n",
+
+ OSTRACE(("AFPSETLOCK [%s] for %d%s in range %llx:%llx\n",
(setLockFlag?"ON":"OFF"), pFile->h, (pb.fd==-1?"[testval-1]":""),
offset, length));
err = fsctl(path, afpfsByteRangeLock2FSCTL, &pb, 0);
@@ -40810,9 +36394,9 @@ static int afpCheckReservedLock(sqlite3_file *id, int *pResOut){
int reserved = 0;
unixFile *pFile = (unixFile*)id;
afpLockingContext *context;
-
+
SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; );
-
+
assert( pFile );
context = (afpLockingContext *) pFile->lockingContext;
if( context->reserved ){
@@ -40824,12 +36408,12 @@ static int afpCheckReservedLock(sqlite3_file *id, int *pResOut){
if( pFile->pInode->eFileLock>SHARED_LOCK ){
reserved = 1;
}
-
+
/* Otherwise see if some other process holds it.
*/
if( !reserved ){
/* lock the RESERVED byte */
- int lrc = afpSetLock(context->dbPath, pFile, RESERVED_BYTE, 1,1);
+ int lrc = afpSetLock(context->dbPath, pFile, RESERVED_BYTE, 1,1);
if( SQLITE_OK==lrc ){
/* if we succeeded in taking the reserved lock, unlock it to restore
** the original state */
@@ -40842,10 +36426,10 @@ static int afpCheckReservedLock(sqlite3_file *id, int *pResOut){
rc=lrc;
}
}
-
+
sqlite3_mutex_leave(pFile->pInode->pLockMutex);
OSTRACE(("TEST WR-LOCK %d %d %d (afp)\n", pFile->h, rc, reserved));
-
+
*pResOut = reserved;
return rc;
}
@@ -40879,7 +36463,7 @@ static int afpLock(sqlite3_file *id, int eFileLock){
unixFile *pFile = (unixFile*)id;
unixInodeInfo *pInode = pFile->pInode;
afpLockingContext *context = (afpLockingContext *) pFile->lockingContext;
-
+
assert( pFile );
OSTRACE(("LOCK %d %s was %s(%s,%d) pid=%d (afp)\n", pFile->h,
azFileLock(eFileLock), azFileLock(pFile->eFileLock),
@@ -40903,7 +36487,7 @@ static int afpLock(sqlite3_file *id, int eFileLock){
assert( pFile->eFileLock!=NO_LOCK || eFileLock==SHARED_LOCK );
assert( eFileLock!=PENDING_LOCK );
assert( eFileLock!=RESERVED_LOCK || pFile->eFileLock==SHARED_LOCK );
-
+
/* This mutex is needed because pFile->pInode is shared across threads
*/
pInode = pFile->pInode;
@@ -40912,18 +36496,18 @@ static int afpLock(sqlite3_file *id, int eFileLock){
/* If some thread using this PID has a lock via a different unixFile*
** handle that precludes the requested lock, return BUSY.
*/
- if( (pFile->eFileLock!=pInode->eFileLock &&
+ if( (pFile->eFileLock!=pInode->eFileLock &&
(pInode->eFileLock>=PENDING_LOCK || eFileLock>SHARED_LOCK))
){
rc = SQLITE_BUSY;
goto afp_end_lock;
}
-
+
/* If a SHARED lock is requested, and some thread using this PID already
** has a SHARED or RESERVED lock, then increment reference counts and
** return SQLITE_OK.
*/
- if( eFileLock==SHARED_LOCK &&
+ if( eFileLock==SHARED_LOCK &&
(pInode->eFileLock==SHARED_LOCK || pInode->eFileLock==RESERVED_LOCK) ){
assert( eFileLock==SHARED_LOCK );
assert( pFile->eFileLock==0 );
@@ -40933,12 +36517,12 @@ static int afpLock(sqlite3_file *id, int eFileLock){
pInode->nLock++;
goto afp_end_lock;
}
-
+
/* A PENDING lock is needed before acquiring a SHARED lock and before
** acquiring an EXCLUSIVE lock. For the SHARED lock, the PENDING will
** be released.
*/
- if( eFileLock==SHARED_LOCK
+ if( eFileLock==SHARED_LOCK
|| (eFileLock==EXCLUSIVE_LOCK && pFile->eFileLocknShared==0 );
assert( pInode->eFileLock==0 );
-
+
mask = (sizeof(long)==8) ? LARGEST_INT64 : 0x7fffffff;
/* Now get the read-lock SHARED_LOCK */
/* note that the quality of the randomness doesn't matter that much */
- lk = random();
+ lk = random();
pInode->sharedByte = (lk & mask)%(SHARED_SIZE - 1);
- lrc1 = afpSetLock(context->dbPath, pFile,
+ lrc1 = afpSetLock(context->dbPath, pFile,
SHARED_FIRST+pInode->sharedByte, 1, 1);
if( IS_LOCK_ERROR(lrc1) ){
lrc1Errno = pFile->lastErrno;
}
/* Drop the temporary PENDING lock */
lrc2 = afpSetLock(context->dbPath, pFile, PENDING_BYTE, 1, 0);
-
+
if( IS_LOCK_ERROR(lrc1) ) {
storeLastErrno(pFile, lrc1Errno);
rc = lrc1;
@@ -41006,34 +36590,34 @@ static int afpLock(sqlite3_file *id, int eFileLock){
}
if (!failed && eFileLock == EXCLUSIVE_LOCK) {
/* Acquire an EXCLUSIVE lock */
-
- /* Remove the shared lock before trying the range. we'll need to
+
+ /* Remove the shared lock before trying the range. we'll need to
** reestablish the shared lock if we can't get the afpUnlock
*/
if( !(failed = afpSetLock(context->dbPath, pFile, SHARED_FIRST +
pInode->sharedByte, 1, 0)) ){
int failed2 = SQLITE_OK;
/* now attemmpt to get the exclusive lock range */
- failed = afpSetLock(context->dbPath, pFile, SHARED_FIRST,
+ failed = afpSetLock(context->dbPath, pFile, SHARED_FIRST,
SHARED_SIZE, 1);
- if( failed && (failed2 = afpSetLock(context->dbPath, pFile,
+ if( failed && (failed2 = afpSetLock(context->dbPath, pFile,
SHARED_FIRST + pInode->sharedByte, 1, 1)) ){
/* Can't reestablish the shared lock. Sqlite can't deal, this is
** a critical I/O error
*/
- rc = ((failed & 0xff) == SQLITE_IOERR) ? failed2 :
+ rc = ((failed & 0xff) == SQLITE_IOERR) ? failed2 :
SQLITE_IOERR_LOCK;
goto afp_end_lock;
- }
+ }
}else{
- rc = failed;
+ rc = failed;
}
}
if( failed ){
rc = failed;
}
}
-
+
if( rc==SQLITE_OK ){
pFile->eFileLock = eFileLock;
pInode->eFileLock = eFileLock;
@@ -41041,10 +36625,10 @@ static int afpLock(sqlite3_file *id, int eFileLock){
pFile->eFileLock = PENDING_LOCK;
pInode->eFileLock = PENDING_LOCK;
}
-
+
afp_end_lock:
sqlite3_mutex_leave(pInode->pLockMutex);
- OSTRACE(("LOCK %d %s %s (afp)\n", pFile->h, azFileLock(eFileLock),
+ OSTRACE(("LOCK %d %s %s (afp)\n", pFile->h, azFileLock(eFileLock),
rc==SQLITE_OK ? "ok" : "failed"));
return rc;
}
@@ -41083,7 +36667,7 @@ static int afpUnlock(sqlite3_file *id, int eFileLock) {
SimulateIOErrorBenign(1);
SimulateIOError( h=(-1) )
SimulateIOErrorBenign(0);
-
+
#ifdef SQLITE_DEBUG
/* When reducing a lock such that other processes can start
** reading the database file again, make sure that the
@@ -41098,7 +36682,7 @@ static int afpUnlock(sqlite3_file *id, int eFileLock) {
|| pFile->transCntrChng==1 );
pFile->inNormalWrite = 0;
#endif
-
+
if( pFile->eFileLock==EXCLUSIVE_LOCK ){
rc = afpSetLock(context->dbPath, pFile, SHARED_FIRST, SHARED_SIZE, 0);
if( rc==SQLITE_OK && (eFileLock==SHARED_LOCK || pInode->nShared>1) ){
@@ -41111,11 +36695,11 @@ static int afpUnlock(sqlite3_file *id, int eFileLock) {
}
if( rc==SQLITE_OK && pFile->eFileLock>=PENDING_LOCK ){
rc = afpSetLock(context->dbPath, pFile, PENDING_BYTE, 1, 0);
- }
+ }
if( rc==SQLITE_OK && pFile->eFileLock>=RESERVED_LOCK && context->reserved ){
rc = afpSetLock(context->dbPath, pFile, RESERVED_BYTE, 1, 0);
- if( !rc ){
- context->reserved = 0;
+ if( !rc ){
+ context->reserved = 0;
}
}
if( rc==SQLITE_OK && (eFileLock==SHARED_LOCK || pInode->nShared>1)){
@@ -41148,7 +36732,7 @@ static int afpUnlock(sqlite3_file *id, int eFileLock) {
if( pInode->nLock==0 ) closePendingFds(pFile);
}
}
-
+
sqlite3_mutex_leave(pInode->pLockMutex);
if( rc==SQLITE_OK ){
pFile->eFileLock = eFileLock;
@@ -41157,7 +36741,7 @@ static int afpUnlock(sqlite3_file *id, int eFileLock) {
}
/*
-** Close a file & cleanup AFP specific locking context
+** Close a file & cleanup AFP specific locking context
*/
static int afpClose(sqlite3_file *id) {
int rc = SQLITE_OK;
@@ -41215,7 +36799,7 @@ static int nfsUnlock(sqlite3_file *id, int eFileLock){
/*
** The code above is the NFS lock implementation. The code is specific
** to MacOSX and does not work on other unix platforms. No alternative
-** is available.
+** is available.
**
********************* End of the NFS lock implementation **********************
******************************************************************************/
@@ -41223,7 +36807,7 @@ static int nfsUnlock(sqlite3_file *id, int eFileLock){
/******************************************************************************
**************** Non-locking sqlite3_file methods *****************************
**
-** The next division contains implementations for all methods of the
+** The next division contains implementations for all methods of the
** sqlite3_file object other than the locking methods. The locking
** methods were defined in divisions above (one locking method per
** division). Those methods that are common to all locking modes
@@ -41231,7 +36815,7 @@ static int nfsUnlock(sqlite3_file *id, int eFileLock){
*/
/*
-** Seek to the offset passed as the second argument, then read cnt
+** Seek to the offset passed as the second argument, then read cnt
** bytes into pBuf. Return the number of bytes actually read.
**
** NB: If you define USE_PREAD or USE_PREAD64, then it might also
@@ -41293,8 +36877,8 @@ static int seekAndRead(unixFile *id, sqlite3_int64 offset, void *pBuf, int cnt){
** wrong.
*/
static int unixRead(
- sqlite3_file *id,
- void *pBuf,
+ sqlite3_file *id,
+ void *pBuf,
int amt,
sqlite3_int64 offset
){
@@ -41304,12 +36888,12 @@ static int unixRead(
assert( offset>=0 );
assert( amt>0 );
- /* If this is a database file (not a journal, master-journal or temp
+ /* If this is a database file (not a journal, super-journal or temp
** file), the bytes in the locking range should never be read or written. */
#if 0
assert( pFile->pPreallocatedUnused==0
|| offset>=PENDING_BYTE+512
- || offset+amt<=PENDING_BYTE
+ || offset+amt<=PENDING_BYTE
);
#endif
@@ -41347,7 +36931,7 @@ static int unixRead(
/*
** Attempt to seek the file-descriptor passed as the first argument to
** absolute offset iOff, then attempt to write nBuf bytes of data from
-** pBuf to it. If an error occurs, return -1 and set *piErrno. Otherwise,
+** pBuf to it. If an error occurs, return -1 and set *piErrno. Otherwise,
** return the actual number of bytes written (which may be less than
** nBuf).
*/
@@ -41407,22 +36991,22 @@ static int seekAndWrite(unixFile *id, i64 offset, const void *pBuf, int cnt){
** or some other error code on failure.
*/
static int unixWrite(
- sqlite3_file *id,
- const void *pBuf,
+ sqlite3_file *id,
+ const void *pBuf,
int amt,
- sqlite3_int64 offset
+ sqlite3_int64 offset
){
unixFile *pFile = (unixFile*)id;
int wrote = 0;
assert( id );
assert( amt>0 );
- /* If this is a database file (not a journal, master-journal or temp
+ /* If this is a database file (not a journal, super-journal or temp
** file), the bytes in the locking range should never be read or written. */
#if 0
assert( pFile->pPreallocatedUnused==0
|| offset>=PENDING_BYTE+512
- || offset+amt<=PENDING_BYTE
+ || offset+amt<=PENDING_BYTE
);
#endif
@@ -41464,7 +37048,7 @@ static int unixWrite(
}
}
#endif
-
+
while( (wrote = seekAndWrite(pFile, offset, pBuf, amt))0 ){
amt -= wrote;
offset += wrote;
@@ -41530,8 +37114,8 @@ SQLITE_API int sqlite3_fullsync_count = 0;
**
** SQLite sets the dataOnly flag if the size of the file is unchanged.
** The idea behind dataOnly is that it should only write the file content
-** to disk, not the inode. We only set dataOnly if the file size is
-** unchanged since the file size is part of the inode. However,
+** to disk, not the inode. We only set dataOnly if the file size is
+** unchanged since the file size is part of the inode. However,
** Ted Ts'o tells us that fdatasync() will also write the inode if the
** file size has changed. The only real difference between fdatasync()
** and fsync(), Ted tells us, is that fdatasync() will not flush the
@@ -41545,7 +37129,7 @@ static int full_fsync(int fd, int fullSync, int dataOnly){
int rc;
/* The following "ifdef/elif/else/" block has the same structure as
- ** the one below. It is replicated here solely to avoid cluttering
+ ** the one below. It is replicated here solely to avoid cluttering
** up the real code with the UNUSED_PARAMETER() macros.
*/
#ifdef SQLITE_NO_SYNC
@@ -41559,7 +37143,7 @@ static int full_fsync(int fd, int fullSync, int dataOnly){
UNUSED_PARAMETER(dataOnly);
#endif
- /* Record the number of times that we do a normal fsync() and
+ /* Record the number of times that we do a normal fsync() and
** FULLSYNC. This is used during testing to verify that this procedure
** gets called with the correct arguments.
*/
@@ -41585,11 +37169,11 @@ static int full_fsync(int fd, int fullSync, int dataOnly){
rc = 1;
}
/* If the FULLFSYNC failed, fall back to attempting an fsync().
- ** It shouldn't be possible for fullfsync to fail on the local
+ ** It shouldn't be possible for fullfsync to fail on the local
** file system (on OSX), so failure indicates that FULLFSYNC
- ** isn't supported for this file system. So, attempt an fsync
- ** and (for now) ignore the overhead of a superfluous fcntl call.
- ** It'd be better to detect fullfsync support once and avoid
+ ** isn't supported for this file system. So, attempt an fsync
+ ** and (for now) ignore the overhead of a superfluous fcntl call.
+ ** It'd be better to detect fullfsync support once and avoid
** the fcntl call every time sync is called.
*/
if( rc ) rc = fsync(fd);
@@ -41599,7 +37183,7 @@ static int full_fsync(int fd, int fullSync, int dataOnly){
** so currently we default to the macro that redefines fdatasync to fsync
*/
rc = fsync(fd);
-#else
+#else
rc = fdatasync(fd);
#if OS_VXWORKS
if( rc==-1 && errno==ENOTSUP ){
@@ -41760,7 +37344,7 @@ static int unixTruncate(sqlite3_file *id, i64 nByte){
#if SQLITE_MAX_MMAP_SIZE>0
/* If the file was just truncated to a size smaller than the currently
** mapped region, reduce the effective mapping size as well. SQLite will
- ** use read() and write() to access data beyond this point from now on.
+ ** use read() and write() to access data beyond this point from now on.
*/
if( nBytemmapSize ){
pFile->mmapSize = nByte;
@@ -41806,8 +37390,8 @@ static int unixFileSize(sqlite3_file *id, i64 *pSize){
static int proxyFileControl(sqlite3_file*,int,void*);
#endif
-/*
-** This function is called to handle the SQLITE_FCNTL_SIZE_HINT
+/*
+** This function is called to handle the SQLITE_FCNTL_SIZE_HINT
** file-control operation. Enlarge the database to nBytes in size
** (rounded up to the next chunk-size). If the database is already
** nBytes or larger, this routine is a no-op.
@@ -41816,7 +37400,7 @@ static int fcntlSizeHint(unixFile *pFile, i64 nByte){
if( pFile->szChunk>0 ){
i64 nSize; /* Required file size */
struct stat buf; /* Used to hold return values of fstat() */
-
+
if( osFstat(pFile->h, &buf) ){
return SQLITE_IOERR_FSTAT;
}
@@ -41825,8 +37409,8 @@ static int fcntlSizeHint(unixFile *pFile, i64 nByte){
if( nSize>(i64)buf.st_size ){
#if defined(HAVE_POSIX_FALLOCATE) && HAVE_POSIX_FALLOCATE
- /* The code below is handling the return value of osFallocate()
- ** correctly. posix_fallocate() is defined to "returns zero on success,
+ /* The code below is handling the return value of osFallocate()
+ ** correctly. posix_fallocate() is defined to "returns zero on success,
** or an error number on failure". See the manpage for details. */
int err;
do{
@@ -41834,7 +37418,7 @@ static int fcntlSizeHint(unixFile *pFile, i64 nByte){
}while( err==EINTR );
if( err && err!=EINVAL ) return SQLITE_IOERR_WRITE;
#else
- /* If the OS does not have posix_fallocate(), fake it. Write a
+ /* If the OS does not have posix_fallocate(), fake it. Write a
** single byte to the last byte in each block that falls entirely
** within the extended region. Then, if required, a single byte
** at offset (nSize-1), to set the size of the file correctly.
@@ -41960,7 +37544,9 @@ static int unixFileControl(sqlite3_file *id, int op, void *pArg){
}
#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
case SQLITE_FCNTL_LOCK_TIMEOUT: {
+ int iOld = pFile->iBusyTimeout;
pFile->iBusyTimeout = *(int*)pArg;
+ *(int*)pArg = iOld;
return SQLITE_OK;
}
#endif
@@ -42013,9 +37599,9 @@ static int unixFileControl(sqlite3_file *id, int op, void *pArg){
/*
** If pFd->sectorSize is non-zero when this function is called, it is a
-** no-op. Otherwise, the values of pFd->sectorSize and
-** pFd->deviceCharacteristics are set according to the file-system
-** characteristics.
+** no-op. Otherwise, the values of pFd->sectorSize and
+** pFd->deviceCharacteristics are set according to the file-system
+** characteristics.
**
** There are two versions of this function. One for QNX and one for all
** other systems.
@@ -42049,7 +37635,7 @@ static void setDeviceCharacteristics(unixFile *pFd){
static void setDeviceCharacteristics(unixFile *pFile){
if( pFile->sectorSize == 0 ){
struct statvfs fsInfo;
-
+
/* Set defaults for non-supported filesystems */
pFile->sectorSize = SQLITE_DEFAULT_SECTOR_SIZE;
pFile->deviceCharacteristics = 0;
@@ -42158,7 +37744,7 @@ static int unixDeviceCharacteristics(sqlite3_file *id){
/*
** Return the system page size.
**
-** This function should not be called directly by other code in this file.
+** This function should not be called directly by other code in this file.
** Instead, it should be called via macro osGetpagesize().
*/
static int unixGetpagesize(void){
@@ -42176,7 +37762,7 @@ static int unixGetpagesize(void){
#ifndef SQLITE_OMIT_WAL
/*
-** Object used to represent an shared memory buffer.
+** Object used to represent an shared memory buffer.
**
** When multiple threads all reference the same wal-index, each thread
** has its own unixShm object, but they all point to a single instance
@@ -42196,7 +37782,7 @@ static int unixGetpagesize(void){
** nRef
**
** The following fields are read-only after the object is created:
-**
+**
** hShm
** zFilename
**
@@ -42279,13 +37865,20 @@ static int unixShmSystemLock(
assert( n>=1 && n<=SQLITE_SHM_NLOCK );
if( pShmNode->hShm>=0 ){
+ int res;
/* Initialize the locking parameters */
f.l_type = lockType;
f.l_whence = SEEK_SET;
f.l_start = ofst;
f.l_len = n;
- rc = osSetPosixAdvisoryLock(pShmNode->hShm, &f, pFile);
- rc = (rc!=(-1)) ? SQLITE_OK : SQLITE_BUSY;
+ res = osSetPosixAdvisoryLock(pShmNode->hShm, &f, pFile);
+ if( res==-1 ){
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+ rc = (pFile->iBusyTimeout ? SQLITE_BUSY_TIMEOUT : SQLITE_BUSY);
+#else
+ rc = SQLITE_BUSY;
+#endif
+ }
}
/* Update the global lock state and do debug tracing */
@@ -42323,7 +37916,7 @@ static int unixShmSystemLock(
}
#endif
- return rc;
+ return rc;
}
/*
@@ -42379,7 +37972,7 @@ static void unixShmPurge(unixFile *pFd){
** take it now. Return SQLITE_OK if successful, or an SQLite error
** code otherwise.
**
-** If the DMS cannot be locked because this is a readonly_shm=1
+** If the DMS cannot be locked because this is a readonly_shm=1
** connection and no other process already holds a lock, return
** SQLITE_READONLY_CANTINIT and set pShmNode->isUnlocked=1.
*/
@@ -42390,7 +37983,7 @@ static int unixLockSharedMemory(unixFile *pDbFd, unixShmNode *pShmNode){
/* Use F_GETLK to determine the locks other processes are holding
** on the DMS byte. If it indicates that another process is holding
** a SHARED lock, then this process may also take a SHARED lock
- ** and proceed with opening the *-shm file.
+ ** and proceed with opening the *-shm file.
**
** Or, if no other process is holding any lock, then this process
** is the first to open it. In this case take an EXCLUSIVE lock on the
@@ -42438,20 +38031,20 @@ static int unixLockSharedMemory(unixFile *pDbFd, unixShmNode *pShmNode){
}
/*
-** Open a shared-memory area associated with open database file pDbFd.
+** Open a shared-memory area associated with open database file pDbFd.
** This particular implementation uses mmapped files.
**
** The file used to implement shared-memory is in the same directory
** as the open database file and has the same name as the open database
** file with the "-shm" suffix added. For example, if the database file
** is "/home/user1/config.db" then the file that is created and mmapped
-** for shared memory will be called "/home/user1/config.db-shm".
+** for shared memory will be called "/home/user1/config.db-shm".
**
** Another approach to is to use files in /dev/shm or /dev/tmp or an
** some other tmpfs mount. But if a file in a different directory
** from the database file is used, then differing access permissions
** or a chroot() might cause two different processes on the same
-** database to end up using different files for shared memory -
+** database to end up using different files for shared memory -
** meaning that their memory would not really be shared - resulting
** in database corruption. Nevertheless, this tmpfs file usage
** can be enabled at compile-time using -DSQLITE_SHM_DIRECTORY="/dev/shm"
@@ -42521,7 +38114,7 @@ static int unixOpenSharedMemory(unixFile *pDbFd){
memset(pShmNode, 0, sizeof(*pShmNode)+nShmFilename);
zShm = pShmNode->zFilename = (char*)&pShmNode[1];
#ifdef SQLITE_SHM_DIRECTORY
- sqlite3_snprintf(nShmFilename, zShm,
+ sqlite3_snprintf(nShmFilename, zShm,
SQLITE_SHM_DIRECTORY "/sqlite-shm-%x-%x",
(u32)sStat.st_ino, (u32)sStat.st_dev);
#else
@@ -42541,10 +38134,12 @@ static int unixOpenSharedMemory(unixFile *pDbFd){
if( pInode->bProcessLock==0 ){
if( 0==sqlite3_uri_boolean(pDbFd->zPath, "readonly_shm", 0) ){
- pShmNode->hShm = robust_open(zShm, O_RDWR|O_CREAT,(sStat.st_mode&0777));
+ pShmNode->hShm = robust_open(zShm, O_RDWR|O_CREAT|O_NOFOLLOW,
+ (sStat.st_mode&0777));
}
if( pShmNode->hShm<0 ){
- pShmNode->hShm = robust_open(zShm, O_RDONLY, (sStat.st_mode&0777));
+ pShmNode->hShm = robust_open(zShm, O_RDONLY|O_NOFOLLOW,
+ (sStat.st_mode&0777));
if( pShmNode->hShm<0 ){
rc = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zShm);
goto shm_open_err;
@@ -42594,22 +38189,22 @@ shm_open_err:
}
/*
-** This function is called to obtain a pointer to region iRegion of the
-** shared-memory associated with the database file fd. Shared-memory regions
-** are numbered starting from zero. Each shared-memory region is szRegion
+** This function is called to obtain a pointer to region iRegion of the
+** shared-memory associated with the database file fd. Shared-memory regions
+** are numbered starting from zero. Each shared-memory region is szRegion
** bytes in size.
**
** If an error occurs, an error code is returned and *pp is set to NULL.
**
** Otherwise, if the bExtend parameter is 0 and the requested shared-memory
** region has not been allocated (by any client, including one running in a
-** separate process), then *pp is set to NULL and SQLITE_OK returned. If
-** bExtend is non-zero and the requested shared-memory region has not yet
+** separate process), then *pp is set to NULL and SQLITE_OK returned. If
+** bExtend is non-zero and the requested shared-memory region has not yet
** been allocated, it is allocated by this function.
**
** If the shared-memory region has already been allocated or is allocated by
-** this call as described above, then it is mapped into this processes
-** address space (if it is not already), *pp is set to point to the mapped
+** this call as described above, then it is mapped into this processes
+** address space (if it is not already), *pp is set to point to the mapped
** memory and SQLITE_OK returned.
*/
static int unixShmMap(
@@ -42664,7 +38259,7 @@ static int unixShmMap(
rc = SQLITE_IOERR_SHMSIZE;
goto shmpage_out;
}
-
+
if( sStat.st_sizehShm>=0 ){
pMem = osMmap(0, nMap,
- pShmNode->isReadonly ? PROT_READ : PROT_READ|PROT_WRITE,
+ pShmNode->isReadonly ? PROT_READ : PROT_READ|PROT_WRITE,
MAP_SHARED, pShmNode->hShm, szRegion*(i64)pShmNode->nRegion
);
if( pMem==MAP_FAILED ){
@@ -42780,6 +38375,28 @@ static int unixShmLock(
assert( pShmNode->hShm>=0 || pDbFd->pInode->bProcessLock==1 );
assert( pShmNode->hShm<0 || pDbFd->pInode->bProcessLock==0 );
+ /* Check that, if this to be a blocking lock, no locks that occur later
+ ** in the following list than the lock being obtained are already held:
+ **
+ ** 1. Checkpointer lock (ofst==1).
+ ** 2. Write lock (ofst==0).
+ ** 3. Read locks (ofst>=3 && ofstiBusyTimeout==0 || (
+ (ofst!=2) /* not RECOVER */
+ && (ofst!=1 || (p->exclMask|p->sharedMask)==0)
+ && (ofst!=0 || (p->exclMask|p->sharedMask)<3)
+ && (ofst<3 || (p->exclMask|p->sharedMask)<(1<1 || mask==(1<pShmMutex);
@@ -42804,7 +38421,7 @@ static int unixShmLock(
if( rc==SQLITE_OK ){
p->exclMask &= ~mask;
p->sharedMask &= ~mask;
- }
+ }
}else if( flags & SQLITE_SHM_SHARED ){
u16 allShared = 0; /* Union of locks held by connections other than "p" */
@@ -42843,7 +38460,7 @@ static int unixShmLock(
break;
}
}
-
+
/* Get the exclusive locks at the system level. Then if successful
** also mark the local connection as being locked.
*/
@@ -42862,7 +38479,7 @@ static int unixShmLock(
}
/*
-** Implement a memory barrier or memory fence on shared memory.
+** Implement a memory barrier or memory fence on shared memory.
**
** All loads and stores begun before the barrier must complete before
** any load or store begun after the barrier.
@@ -42872,15 +38489,15 @@ static void unixShmBarrier(
){
UNUSED_PARAMETER(fd);
sqlite3MemoryBarrier(); /* compiler-defined memory barrier */
- assert( fd->pMethods->xLock==nolockLock
- || unixFileMutexNotheld((unixFile*)fd)
+ assert( fd->pMethods->xLock==nolockLock
+ || unixFileMutexNotheld((unixFile*)fd)
);
unixEnterMutex(); /* Also mutex, for redundancy */
unixLeaveMutex();
}
/*
-** Close a connection to shared-memory. Delete the underlying
+** Close a connection to shared-memory. Delete the underlying
** storage if deleteFlag is true.
**
** If there is no shared memory associated with the connection then this
@@ -42954,7 +38571,7 @@ static void unixUnmapfile(unixFile *pFd){
}
/*
-** Attempt to set the size of the memory mapping maintained by file
+** Attempt to set the size of the memory mapping maintained by file
** descriptor pFd to nNew bytes. Any existing mapping is discarded.
**
** If successful, this function sets the following variables:
@@ -43046,14 +38663,14 @@ static void unixRemapfile(
/*
** Memory map or remap the file opened by file-descriptor pFd (if the file
-** is already mapped, the existing mapping is replaced by the new). Or, if
-** there already exists a mapping for this file, and there are still
+** is already mapped, the existing mapping is replaced by the new). Or, if
+** there already exists a mapping for this file, and there are still
** outstanding xFetch() references to it, this function is a no-op.
**
-** If parameter nByte is non-negative, then it is the requested size of
-** the mapping to create. Otherwise, if nByte is less than zero, then the
+** If parameter nByte is non-negative, then it is the requested size of
+** the mapping to create. Otherwise, if nByte is less than zero, then the
** requested size is the size of the file on disk. The actual size of the
-** created mapping is either the requested size or the value configured
+** created mapping is either the requested size or the value configured
** using SQLITE_FCNTL_MMAP_LIMIT, whichever is smaller.
**
** SQLITE_OK is returned if no error occurs (even if the mapping is not
@@ -43094,7 +38711,7 @@ static int unixMapfile(unixFile *pFd, i64 nMap){
** Finally, if an error does occur, return an SQLite error code. The final
** value of *pp is undefined in this case.
**
-** If this function does return a pointer, the caller must eventually
+** If this function does return a pointer, the caller must eventually
** release the reference by calling unixUnfetch().
*/
static int unixFetch(sqlite3_file *fd, i64 iOff, int nAmt, void **pp){
@@ -43119,13 +38736,13 @@ static int unixFetch(sqlite3_file *fd, i64 iOff, int nAmt, void **pp){
}
/*
-** If the third argument is non-NULL, then this function releases a
+** If the third argument is non-NULL, then this function releases a
** reference obtained by an earlier call to unixFetch(). The second
** argument passed to this function must be the same as the corresponding
-** argument that was passed to the unixFetch() invocation.
+** argument that was passed to the unixFetch() invocation.
**
-** Or, if the third argument is NULL, then this function is being called
-** to inform the VFS layer that, according to POSIX, any existing mapping
+** Or, if the third argument is NULL, then this function is being called
+** to inform the VFS layer that, according to POSIX, any existing mapping
** may now be invalid and should be unmapped.
*/
static int unixUnfetch(sqlite3_file *fd, i64 iOff, void *p){
@@ -43133,7 +38750,7 @@ static int unixUnfetch(sqlite3_file *fd, i64 iOff, void *p){
unixFile *pFd = (unixFile *)fd; /* The underlying database file */
UNUSED_PARAMETER(iOff);
- /* If p==0 (unmap the entire file) then there must be no outstanding
+ /* If p==0 (unmap the entire file) then there must be no outstanding
** xFetch references. Or, if p!=0 (meaning it is an xFetch reference),
** then there must be at least one outstanding. */
assert( (p==0)==(pFd->nFetchOut==0) );
@@ -43341,8 +38958,8 @@ IOMETHODS(
#endif
#if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE
-/*
-** This "finder" function attempts to determine the best locking strategy
+/*
+** This "finder" function attempts to determine the best locking strategy
** for the database file "filePath". It then returns the sqlite3_io_methods
** object that implements that strategy.
**
@@ -43384,8 +39001,8 @@ static const sqlite3_io_methods *autolockIoFinderImpl(
}
/* Default case. Handles, amongst others, "nfs".
- ** Test byte-range lock using fcntl(). If the call succeeds,
- ** assume that the file-system supports POSIX style locks.
+ ** Test byte-range lock using fcntl(). If the call succeeds,
+ ** assume that the file-system supports POSIX style locks.
*/
lockInfo.l_len = 1;
lockInfo.l_start = 0;
@@ -43401,7 +39018,7 @@ static const sqlite3_io_methods *autolockIoFinderImpl(
return &dotlockIoMethods;
}
}
-static const sqlite3_io_methods
+static const sqlite3_io_methods
*(*const autolockIoFinder)(const char*,unixFile*) = autolockIoFinderImpl;
#endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */
@@ -43437,7 +39054,7 @@ static const sqlite3_io_methods *vxworksIoFinderImpl(
return &semIoMethods;
}
}
-static const sqlite3_io_methods
+static const sqlite3_io_methods
*(*const vxworksIoFinder)(const char*,unixFile*) = vxworksIoFinderImpl;
#endif /* OS_VXWORKS */
@@ -43565,14 +39182,14 @@ static int fillInUnixFile(
robust_close(pNew, h, __LINE__);
h = -1;
}
- unixLeaveMutex();
+ unixLeaveMutex();
}
}
#endif
else if( pLockingStyle == &dotlockIoMethods ){
/* Dotfile locking uses the file path so it needs to be included in
- ** the dotlockLockingContext
+ ** the dotlockLockingContext
*/
char *zLockFile;
int nFilename;
@@ -43610,7 +39227,7 @@ static int fillInUnixFile(
unixLeaveMutex();
}
#endif
-
+
storeLastErrno(pNew, 0);
#if OS_VXWORKS
if( rc!=SQLITE_OK ){
@@ -43623,7 +39240,7 @@ static int fillInUnixFile(
if( rc!=SQLITE_OK ){
if( h>=0 ) robust_close(pNew, h, __LINE__);
}else{
- pNew->pMethod = pLockingStyle;
+ pId->pMethods = pLockingStyle;
OpenCounter(+1);
verifyDbFile(pNew);
}
@@ -43674,7 +39291,7 @@ static int unixGetTempname(int nBuf, char *zBuf){
/* It's odd to simulate an io-error here, but really this is just
** using the io-error infrastructure to test that SQLite handles this
- ** function failing.
+ ** function failing.
*/
zBuf[0] = 0;
SimulateIOError( return SQLITE_IOERR );
@@ -43703,8 +39320,8 @@ static int proxyTransformUnixFile(unixFile*, const char*);
#endif
/*
-** Search for an unused file descriptor that was opened on the database
-** file (not a journal or master-journal file) identified by pathname
+** Search for an unused file descriptor that was opened on the database
+** file (not a journal or super-journal file) identified by pathname
** zPath with SQLITE_OPEN_XXX flags matching those passed as the second
** argument to this function.
**
@@ -43712,7 +39329,7 @@ static int proxyTransformUnixFile(unixFile*, const char*);
** but the associated file descriptor could not be closed because some
** other file descriptor open on the same file is holding a file-lock.
** Refer to comments in the unixClose() function and the lengthy comment
-** describing "Posix Advisory Locking" at the start of this file for
+** describing "Posix Advisory Locking" at the start of this file for
** further details. Also, ticket #4018.
**
** If a suitable file descriptor is found, then it is returned. If no
@@ -43723,8 +39340,8 @@ static UnixUnusedFd *findReusableFd(const char *zPath, int flags){
/* Do not search for an unused file descriptor on vxworks. Not because
** vxworks would not benefit from the change (it might, we're not sure),
- ** but because no way to test it is currently available. It is better
- ** not to risk breaking vxworks support for the sake of such an obscure
+ ** but because no way to test it is currently available. It is better
+ ** not to risk breaking vxworks support for the sake of such an obscure
** feature. */
#if !OS_VXWORKS
struct stat sStat; /* Results of stat() call */
@@ -43766,7 +39383,7 @@ static UnixUnusedFd *findReusableFd(const char *zPath, int flags){
}
/*
-** Find the mode, uid and gid of file zFile.
+** Find the mode, uid and gid of file zFile.
*/
static int getFileMode(
const char *zFile, /* File name */
@@ -43790,16 +39407,16 @@ static int getFileMode(
** This function is called by unixOpen() to determine the unix permissions
** to create new files with. If no error occurs, then SQLITE_OK is returned
** and a value suitable for passing as the third argument to open(2) is
-** written to *pMode. If an IO error occurs, an SQLite error code is
+** written to *pMode. If an IO error occurs, an SQLite error code is
** returned and the value of *pMode is not modified.
**
** In most cases, this routine sets *pMode to 0, which will become
** an indication to robust_open() to create the file using
** SQLITE_DEFAULT_FILE_PERMISSIONS adjusted by the umask.
-** But if the file being opened is a WAL or regular journal file, then
-** this function queries the file-system for the permissions on the
-** corresponding database file and sets *pMode to this value. Whenever
-** possible, WAL and journal files are created using the same permissions
+** But if the file being opened is a WAL or regular journal file, then
+** this function queries the file-system for the permissions on the
+** corresponding database file and sets *pMode to this value. Whenever
+** possible, WAL and journal files are created using the same permissions
** as the associated database file.
**
** If the SQLITE_ENABLE_8_3_NAMES option is enabled, then the
@@ -43831,14 +39448,14 @@ static int findCreateFileMode(
** "-journalNN"
** "-walNN"
**
- ** where NN is a decimal number. The NN naming schemes are
+ ** where NN is a decimal number. The NN naming schemes are
** used by the test_multiplex.c module.
*/
- nDb = sqlite3Strlen30(zPath) - 1;
+ nDb = sqlite3Strlen30(zPath) - 1;
while( zPath[nDb]!='-' ){
/* In normal operation, the journal file name will always contain
** a '-' character. However in 8+3 filename mode, or if a corrupt
- ** rollback journal specifies a master journal with a goofy name, then
+ ** rollback journal specifies a super-journal with a goofy name, then
** the '-' might be missing. */
if( nDb==0 || zPath[nDb]=='.' ) return SQLITE_OK;
nDb--;
@@ -43864,7 +39481,7 @@ static int findCreateFileMode(
/*
** Open the file zPath.
-**
+**
** Previously, the SQLite OS layer used three functions in place of this
** one:
**
@@ -43875,13 +39492,13 @@ static int findCreateFileMode(
** These calls correspond to the following combinations of flags:
**
** ReadWrite() -> (READWRITE | CREATE)
-** ReadOnly() -> (READONLY)
+** ReadOnly() -> (READONLY)
** OpenExclusive() -> (READWRITE | CREATE | EXCLUSIVE)
**
** The old OpenExclusive() accepted a boolean argument - "delFlag". If
** true, the file was configured to be automatically deleted when the
-** file handle closed. To achieve the same effect using this new
-** interface, add the DELETEONCLOSE flag to those specified above for
+** file handle closed. To achieve the same effect using this new
+** interface, add the DELETEONCLOSE flag to those specified above for
** OpenExclusive().
*/
static int unixOpen(
@@ -43894,7 +39511,7 @@ static int unixOpen(
unixFile *p = (unixFile *)pFile;
int fd = -1; /* File descriptor returned by open() */
int openFlags = 0; /* Flags to pass to open() */
- int eType = flags&0xFFFFFF00; /* Type of file to open */
+ int eType = flags&0x0FFF00; /* Type of file to open */
int noLock; /* True to omit locking primitives */
int rc = SQLITE_OK; /* Function Return Code */
int ctrlFlags = 0; /* UNIXFILE_* flags */
@@ -43911,13 +39528,13 @@ static int unixOpen(
struct statfs fsInfo;
#endif
- /* If creating a master or main-file journal, this function will open
+ /* If creating a super- or main-file journal, this function will open
** a file-descriptor on the directory too. The first time unixSync()
** is called the directory file descriptor will be fsync()ed and close()d.
*/
int isNewJrnl = (isCreate && (
- eType==SQLITE_OPEN_MASTER_JOURNAL
- || eType==SQLITE_OPEN_MAIN_JOURNAL
+ eType==SQLITE_OPEN_SUPER_JOURNAL
+ || eType==SQLITE_OPEN_MAIN_JOURNAL
|| eType==SQLITE_OPEN_WAL
));
@@ -43927,9 +39544,9 @@ static int unixOpen(
char zTmpname[MAX_PATHNAME+2];
const char *zName = zPath;
- /* Check the following statements are true:
+ /* Check the following statements are true:
**
- ** (a) Exactly one of the READWRITE and READONLY flags must be set, and
+ ** (a) Exactly one of the READWRITE and READONLY flags must be set, and
** (b) if CREATE is set, then READWRITE must also be set, and
** (c) if EXCLUSIVE is set, then CREATE must also be set.
** (d) if DELETEONCLOSE is set, then CREATE must also be set.
@@ -43939,17 +39556,17 @@ static int unixOpen(
assert(isExclusive==0 || isCreate);
assert(isDelete==0 || isCreate);
- /* The main DB, main journal, WAL file and master journal are never
+ /* The main DB, main journal, WAL file and super-journal are never
** automatically deleted. Nor are they ever temporary files. */
assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_DB );
assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_JOURNAL );
- assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MASTER_JOURNAL );
+ assert( (!isDelete && zName) || eType!=SQLITE_OPEN_SUPER_JOURNAL );
assert( (!isDelete && zName) || eType!=SQLITE_OPEN_WAL );
/* Assert that the upper layer has set one of the "file-type" flags. */
- assert( eType==SQLITE_OPEN_MAIN_DB || eType==SQLITE_OPEN_TEMP_DB
- || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_TEMP_JOURNAL
- || eType==SQLITE_OPEN_SUBJOURNAL || eType==SQLITE_OPEN_MASTER_JOURNAL
+ assert( eType==SQLITE_OPEN_MAIN_DB || eType==SQLITE_OPEN_TEMP_DB
+ || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_TEMP_JOURNAL
+ || eType==SQLITE_OPEN_SUBJOURNAL || eType==SQLITE_OPEN_SUPER_JOURNAL
|| eType==SQLITE_OPEN_TRANSIENT_DB || eType==SQLITE_OPEN_WAL
);
@@ -43998,13 +39615,13 @@ static int unixOpen(
/* Determine the value of the flags parameter passed to POSIX function
** open(). These must be calculated even if open() is not called, as
- ** they may be stored as part of the file handle and used by the
+ ** they may be stored as part of the file handle and used by the
** 'conch file' locking functions later on. */
if( isReadonly ) openFlags |= O_RDONLY;
if( isReadWrite ) openFlags |= O_RDWR;
if( isCreate ) openFlags |= O_CREAT;
if( isExclusive ) openFlags |= (O_EXCL|O_NOFOLLOW);
- openFlags |= (O_LARGEFILE|O_BINARY);
+ openFlags |= (O_LARGEFILE|O_BINARY|O_NOFOLLOW);
if( fd<0 ){
mode_t openMode; /* Permissions to create file with */
@@ -44063,7 +39680,7 @@ static int unixOpen(
if( p->pPreallocatedUnused ){
p->pPreallocatedUnused->fd = fd;
- p->pPreallocatedUnused->flags =
+ p->pPreallocatedUnused->flags =
flags & (SQLITE_OPEN_READONLY|SQLITE_OPEN_READWRITE);
}
@@ -44085,7 +39702,7 @@ static int unixOpen(
p->openFlags = openFlags;
}
#endif
-
+
#if defined(__APPLE__) || SQLITE_ENABLE_LOCKING_STYLE
if( fstatfs(fd, &fsInfo) == -1 ){
storeLastErrno(p, errno);
@@ -44116,7 +39733,7 @@ static int unixOpen(
char *envforce = getenv("SQLITE_FORCE_PROXY_LOCKING");
int useProxy = 0;
- /* SQLITE_FORCE_PROXY_LOCKING==1 means force always use proxy, 0 means
+ /* SQLITE_FORCE_PROXY_LOCKING==1 means force always use proxy, 0 means
** never use proxy, NULL means use proxy for non-local files only. */
if( envforce!=NULL ){
useProxy = atoi(envforce)>0;
@@ -44128,9 +39745,9 @@ static int unixOpen(
if( rc==SQLITE_OK ){
rc = proxyTransformUnixFile((unixFile*)pFile, ":auto:");
if( rc!=SQLITE_OK ){
- /* Use unixClose to clean up the resources added in fillInUnixFile
- ** and clear all the structure's references. Specifically,
- ** pFile->pMethods will be NULL so sqlite3OsClose will be a no-op
+ /* Use unixClose to clean up the resources added in fillInUnixFile
+ ** and clear all the structure's references. Specifically,
+ ** pFile->pMethods will be NULL so sqlite3OsClose will be a no-op
*/
unixClose(pFile);
return rc;
@@ -44140,9 +39757,9 @@ static int unixOpen(
}
}
#endif
-
- assert( zPath==0 || zPath[0]=='/'
- || eType==SQLITE_OPEN_MASTER_JOURNAL || eType==SQLITE_OPEN_MAIN_JOURNAL
+
+ assert( zPath==0 || zPath[0]=='/'
+ || eType==SQLITE_OPEN_SUPER_JOURNAL || eType==SQLITE_OPEN_MAIN_JOURNAL
);
rc = fillInUnixFile(pVfs, fd, pFile, zPath, ctrlFlags);
@@ -44216,25 +39833,16 @@ static int unixAccess(
SimulateIOError( return SQLITE_IOERR_ACCESS; );
assert( pResOut!=0 );
- /* The spec says there are four possible values for flags. But the
- ** SQLITE_ACCESS_READ flag is never used */
- assert( flags==SQLITE_ACCESS_EXISTS
- || flags==SQLITE_ACCESS_READWRITE
- || flags==SQLITE_ACCESS_SYMLINK );
+ /* The spec says there are three possible values for flags. But only
+ ** two of them are actually used */
+ assert( flags==SQLITE_ACCESS_EXISTS || flags==SQLITE_ACCESS_READWRITE );
if( flags==SQLITE_ACCESS_EXISTS ){
struct stat buf;
- *pResOut = (0==osStat(zPath, &buf) && buf.st_size>0);
- }else if( flags==SQLITE_ACCESS_READWRITE ){
- *pResOut = osAccess(zPath, W_OK|R_OK)==0;
+ *pResOut = 0==osStat(zPath, &buf) &&
+ (!S_ISREG(buf.st_mode) || buf.st_size>0);
}else{
-#if !defined(HAVE_LSTAT)
- *pResOut = 0;
-#else
- struct stat buf;
- *pResOut = (0==osLstat(zPath, &buf) && S_ISLNK(buf.st_mode));
-#endif
- assert( flags==SQLITE_ACCESS_SYMLINK );
+ *pResOut = osAccess(zPath, W_OK|R_OK)==0;
}
return SQLITE_OK;
}
@@ -44269,9 +39877,9 @@ static int mkFullPathname(
/*
** Turn a relative pathname into a full pathname. The relative path
** is stored as a nul-terminated string in the buffer pointed to by
-** zPath.
+** zPath.
**
-** zOut points to a buffer of at least sqlite3_vfs.mxPathname bytes
+** zOut points to a buffer of at least sqlite3_vfs.mxPathname bytes
** (in this case, MAX_PATHNAME bytes). The full-path is written to
** this buffer before returning.
*/
@@ -44286,7 +39894,7 @@ static int unixFullPathname(
#else
int rc = SQLITE_OK;
int nByte;
- int nLink = 1; /* Number of symbolic links followed so far */
+ int nLink = 0; /* Number of symbolic links followed so far */
const char *zIn = zPath; /* Input path for each iteration of loop */
char *zDel = 0;
@@ -44315,10 +39923,11 @@ static int unixFullPathname(
}
if( bLink ){
+ nLink++;
if( zDel==0 ){
zDel = sqlite3_malloc(nOut);
if( zDel==0 ) rc = SQLITE_NOMEM_BKPT;
- }else if( ++nLink>SQLITE_MAX_SYMLINKS ){
+ }else if( nLink>=SQLITE_MAX_SYMLINKS ){
rc = SQLITE_CANTOPEN_BKPT;
}
@@ -44354,6 +39963,7 @@ static int unixFullPathname(
}while( rc==SQLITE_OK );
sqlite3_free(zDel);
+ if( rc==SQLITE_OK && nLink ) rc = SQLITE_OK_SYMLINK;
return rc;
#endif /* HAVE_READLINK && HAVE_LSTAT */
}
@@ -44388,7 +39998,7 @@ static void unixDlError(sqlite3_vfs *NotUsed, int nBuf, char *zBufOut){
unixLeaveMutex();
}
static void (*unixDlSym(sqlite3_vfs *NotUsed, void *p, const char*zSym))(void){
- /*
+ /*
** GCC with -pedantic-errors says that C90 does not allow a void* to be
** cast into a pointer to a function. And yet the library dlsym() routine
** returns a void* which is really a pointer to a function. So how do we
@@ -44398,7 +40008,7 @@ static void (*unixDlSym(sqlite3_vfs *NotUsed, void *p, const char*zSym))(void){
** parameters void* and const char* and returning a pointer to a function.
** We initialize x by assigning it a pointer to the dlsym() function.
** (That assignment requires a cast.) Then we call the function that
- ** x points to.
+ ** x points to.
**
** This work-around is unlikely to work correctly on any system where
** you really cannot cast a function pointer into void*. But then, on the
@@ -44441,7 +40051,7 @@ static int unixRandomness(sqlite3_vfs *NotUsed, int nBuf, char *zBuf){
** tests repeatable.
*/
memset(zBuf, 0, nBuf);
- randomnessPid = osGetpid(0);
+ randomnessPid = osGetpid(0);
#if !defined(SQLITE_TEST) && !defined(SQLITE_OMIT_RANDOMNESS)
{
int fd, got;
@@ -44508,7 +40118,7 @@ SQLITE_API int sqlite3_current_time = 0; /* Fake system time in seconds since 1
** epoch of noon in Greenwich on November 24, 4714 B.C according to the
** proleptic Gregorian calendar.
**
-** On success, return SQLITE_OK. Return SQLITE_ERROR if the time and date
+** On success, return SQLITE_OK. Return SQLITE_ERROR if the time and date
** cannot be found.
*/
static int unixCurrentTimeInt64(sqlite3_vfs *NotUsed, sqlite3_int64 *piNow){
@@ -44615,7 +40225,7 @@ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){
** To address the performance and cache coherency issues, proxy file locking
** changes the way database access is controlled by limiting access to a
** single host at a time and moving file locks off of the database file
-** and onto a proxy file on the local file system.
+** and onto a proxy file on the local file system.
**
**
** Using proxy locks
@@ -44641,19 +40251,19 @@ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){
** actual proxy file name is generated from the name and path of the
** database file. For example:
**
-** For database path "/Users/me/foo.db"
+** For database path "/Users/me/foo.db"
** The lock path will be "/sqliteplocks/_Users_me_foo.db:auto:")
**
** Once a lock proxy is configured for a database connection, it can not
** be removed, however it may be switched to a different proxy path via
** the above APIs (assuming the conch file is not being held by another
-** connection or process).
+** connection or process).
**
**
** How proxy locking works
** -----------------------
**
-** Proxy file locking relies primarily on two new supporting files:
+** Proxy file locking relies primarily on two new supporting files:
**
** * conch file to limit access to the database file to a single host
** at a time
@@ -44680,11 +40290,11 @@ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){
** host (the conch ensures that they all use the same local lock file).
**
** Requesting the lock proxy does not immediately take the conch, it is
-** only taken when the first request to lock database file is made.
+** only taken when the first request to lock database file is made.
** This matches the semantics of the traditional locking behavior, where
** opening a connection to a database file does not take a lock on it.
-** The shared lock and an open file descriptor are maintained until
-** the connection to the database is closed.
+** The shared lock and an open file descriptor are maintained until
+** the connection to the database is closed.
**
** The proxy file and the lock file are never deleted so they only need
** to be created the first time they are used.
@@ -44698,7 +40308,7 @@ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){
** automatically configured for proxy locking, lock files are
** named automatically using the same logic as
** PRAGMA lock_proxy_file=":auto:"
-**
+**
** SQLITE_PROXY_DEBUG
**
** Enables the logging of error messages during host id file
@@ -44713,8 +40323,8 @@ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){
**
** Permissions to use when creating a directory for storing the
** lock proxy files, only used when LOCKPROXYDIR is not set.
-**
-**
+**
+**
** As mentioned above, when compiled with SQLITE_PREFER_PROXY_LOCKING,
** setting the environment variable SQLITE_FORCE_PROXY_LOCKING to 1 will
** force proxy locking to be used for every database file opened, and 0
@@ -44724,12 +40334,12 @@ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){
*/
/*
-** Proxy locking is only available on MacOSX
+** Proxy locking is only available on MacOSX
*/
#if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE
/*
-** The proxyLockingContext has the path and file structures for the remote
+** The proxyLockingContext has the path and file structures for the remote
** and local proxy files in it
*/
typedef struct proxyLockingContext proxyLockingContext;
@@ -44745,10 +40355,10 @@ struct proxyLockingContext {
sqlite3_io_methods const *pOldMethod; /* Original I/O methods for close */
};
-/*
-** The proxy lock file path for the database at dbPath is written into lPath,
+/*
+** The proxy lock file path for the database at dbPath is written into lPath,
** which must point to valid, writable memory large enough for a maxLen length
-** file path.
+** file path.
*/
static int proxyGetLockPath(const char *dbPath, char *lPath, size_t maxLen){
int len;
@@ -44765,7 +40375,7 @@ static int proxyGetLockPath(const char *dbPath, char *lPath, size_t maxLen){
lPath, errno, osGetpid(0)));
return SQLITE_IOERR_LOCK;
}
- len = strlcat(lPath, "sqliteplocks", maxLen);
+ len = strlcat(lPath, "sqliteplocks", maxLen);
}
# else
len = strlcpy(lPath, "/tmp/", maxLen);
@@ -44775,7 +40385,7 @@ static int proxyGetLockPath(const char *dbPath, char *lPath, size_t maxLen){
if( lPath[len-1]!='/' ){
len = strlcat(lPath, "/", maxLen);
}
-
+
/* transform the db path to a unique cache name */
dbLen = (int)strlen(dbPath);
for( i=0; i 0) ){
/* only mkdir if leaf dir != "." or "/" or ".." */
- if( i-start>2 || (i-start==1 && buf[start] != '.' && buf[start] != '/')
+ if( i-start>2 || (i-start==1 && buf[start] != '.' && buf[start] != '/')
|| (i-start==2 && buf[start] != '.' && buf[start+1] != '.') ){
buf[i]='\0';
if( osMkdir(buf, SQLITE_DEFAULT_PROXYDIR_PERMISSIONS) ){
@@ -44839,7 +40449,7 @@ static int proxyCreateUnixFile(
int fd = -1;
unixFile *pNew;
int rc = SQLITE_OK;
- int openFlags = O_RDWR | O_CREAT;
+ int openFlags = O_RDWR | O_CREAT | O_NOFOLLOW;
sqlite3_vfs dummyVfs;
int terrno = 0;
UnixUnusedFd *pUnused = NULL;
@@ -44869,7 +40479,7 @@ static int proxyCreateUnixFile(
}
}
if( fd<0 ){
- openFlags = O_RDONLY;
+ openFlags = O_RDONLY | O_NOFOLLOW;
fd = robust_open(path, openFlags, 0);
terrno = errno;
}
@@ -44880,13 +40490,13 @@ static int proxyCreateUnixFile(
switch (terrno) {
case EACCES:
return SQLITE_PERM;
- case EIO:
+ case EIO:
return SQLITE_IOERR_LOCK; /* even though it is the conch */
default:
return SQLITE_CANTOPEN_BKPT;
}
}
-
+
pNew = (unixFile *)sqlite3_malloc64(sizeof(*pNew));
if( pNew==NULL ){
rc = SQLITE_NOMEM_BKPT;
@@ -44900,13 +40510,13 @@ static int proxyCreateUnixFile(
pUnused->fd = fd;
pUnused->flags = openFlags;
pNew->pPreallocatedUnused = pUnused;
-
+
rc = fillInUnixFile(&dummyVfs, fd, (sqlite3_file*)pNew, path, 0);
if( rc==SQLITE_OK ){
*ppFile = pNew;
return SQLITE_OK;
}
-end_create_proxy:
+end_create_proxy:
robust_close(pNew, fd, __LINE__);
sqlite3_free(pNew);
sqlite3_free(pUnused);
@@ -44925,7 +40535,7 @@ SQLITE_API int sqlite3_hostid_num = 0;
extern int gethostuuid(uuid_t id, const struct timespec *wait);
#endif
-/* get the host ID via gethostuuid(), pHostID must point to PROXY_HOSTIDLEN
+/* get the host ID via gethostuuid(), pHostID must point to PROXY_HOSTIDLEN
** bytes of writable memory.
*/
static int proxyGetHostID(unsigned char *pHostID, int *pError){
@@ -44951,7 +40561,7 @@ static int proxyGetHostID(unsigned char *pHostID, int *pError){
pHostID[0] = (char)(pHostID[0] + (char)(sqlite3_hostid_num & 0xFF));
}
#endif
-
+
return SQLITE_OK;
}
@@ -44962,14 +40572,14 @@ static int proxyGetHostID(unsigned char *pHostID, int *pError){
#define PROXY_PATHINDEX (PROXY_HEADERLEN+PROXY_HOSTIDLEN)
#define PROXY_MAXCONCHLEN (PROXY_HEADERLEN+PROXY_HOSTIDLEN+MAXPATHLEN)
-/*
-** Takes an open conch file, copies the contents to a new path and then moves
+/*
+** Takes an open conch file, copies the contents to a new path and then moves
** it back. The newly created file's file descriptor is assigned to the
-** conch file structure and finally the original conch file descriptor is
+** conch file structure and finally the original conch file descriptor is
** closed. Returns zero if successful.
*/
static int proxyBreakConchLock(unixFile *pFile, uuid_t myHostID){
- proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext;
+ proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext;
unixFile *conchFile = pCtx->conchFile;
char tPath[MAXPATHLEN];
char buf[PROXY_MAXCONCHLEN];
@@ -44983,7 +40593,7 @@ static int proxyBreakConchLock(unixFile *pFile, uuid_t myHostID){
/* create a new path by replace the trailing '-conch' with '-break' */
pathLen = strlcpy(tPath, cPath, MAXPATHLEN);
- if( pathLen>MAXPATHLEN || pathLen<6 ||
+ if( pathLen>MAXPATHLEN || pathLen<6 ||
(strlcpy(&tPath[pathLen-5], "break", 6) != 5) ){
sqlite3_snprintf(sizeof(errmsg),errmsg,"path error (len %d)",(int)pathLen);
goto end_breaklock;
@@ -44995,7 +40605,7 @@ static int proxyBreakConchLock(unixFile *pFile, uuid_t myHostID){
goto end_breaklock;
}
/* write it out to the temporary break file */
- fd = robust_open(tPath, (O_RDWR|O_CREAT|O_EXCL), 0);
+ fd = robust_open(tPath, (O_RDWR|O_CREAT|O_EXCL|O_NOFOLLOW), 0);
if( fd<0 ){
sqlite3_snprintf(sizeof(errmsg), errmsg, "create failed (%d)", errno);
goto end_breaklock;
@@ -45025,24 +40635,24 @@ end_breaklock:
return rc;
}
-/* Take the requested lock on the conch file and break a stale lock if the
+/* Take the requested lock on the conch file and break a stale lock if the
** host id matches.
*/
static int proxyConchLock(unixFile *pFile, uuid_t myHostID, int lockType){
- proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext;
+ proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext;
unixFile *conchFile = pCtx->conchFile;
int rc = SQLITE_OK;
int nTries = 0;
struct timespec conchModTime;
-
+
memset(&conchModTime, 0, sizeof(conchModTime));
do {
rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, lockType);
nTries ++;
if( rc==SQLITE_BUSY ){
/* If the lock failed (busy):
- * 1st try: get the mod time of the conch, wait 0.5s and try again.
- * 2nd try: fail if the mod time changed or host id is different, wait
+ * 1st try: get the mod time of the conch, wait 0.5s and try again.
+ * 2nd try: fail if the mod time changed or host id is different, wait
* 10 sec and try again
* 3rd try: break the lock unless the mod time has changed.
*/
@@ -45051,20 +40661,20 @@ static int proxyConchLock(unixFile *pFile, uuid_t myHostID, int lockType){
storeLastErrno(pFile, errno);
return SQLITE_IOERR_LOCK;
}
-
+
if( nTries==1 ){
conchModTime = buf.st_mtimespec;
usleep(500000); /* wait 0.5 sec and try the lock again*/
- continue;
+ continue;
}
assert( nTries>1 );
- if( conchModTime.tv_sec != buf.st_mtimespec.tv_sec ||
+ if( conchModTime.tv_sec != buf.st_mtimespec.tv_sec ||
conchModTime.tv_nsec != buf.st_mtimespec.tv_nsec ){
return SQLITE_BUSY;
}
-
- if( nTries==2 ){
+
+ if( nTries==2 ){
char tBuf[PROXY_MAXCONCHLEN];
int len = osPread(conchFile->h, tBuf, PROXY_MAXCONCHLEN, 0);
if( len<0 ){
@@ -45081,9 +40691,9 @@ static int proxyConchLock(unixFile *pFile, uuid_t myHostID, int lockType){
return SQLITE_BUSY;
}
usleep(10000000); /* wait 10 sec and try the lock again */
- continue;
+ continue;
}
-
+
assert( nTries==3 );
if( 0==proxyBreakConchLock(pFile, myHostID) ){
rc = SQLITE_OK;
@@ -45096,19 +40706,19 @@ static int proxyConchLock(unixFile *pFile, uuid_t myHostID, int lockType){
}
}
} while( rc==SQLITE_BUSY && nTries<3 );
-
+
return rc;
}
-/* Takes the conch by taking a shared lock and read the contents conch, if
-** lockPath is non-NULL, the host ID and lock file path must match. A NULL
-** lockPath means that the lockPath in the conch file will be used if the
-** host IDs match, or a new lock path will be generated automatically
+/* Takes the conch by taking a shared lock and read the contents conch, if
+** lockPath is non-NULL, the host ID and lock file path must match. A NULL
+** lockPath means that the lockPath in the conch file will be used if the
+** host IDs match, or a new lock path will be generated automatically
** and written to the conch file.
*/
static int proxyTakeConch(unixFile *pFile){
- proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext;
-
+ proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext;
+
if( pCtx->conchHeld!=0 ){
return SQLITE_OK;
}else{
@@ -45124,7 +40734,7 @@ static int proxyTakeConch(unixFile *pFile){
int readLen = 0;
int tryOldLockPath = 0;
int forceNewLockPath = 0;
-
+
OSTRACE(("TAKECONCH %d for %s pid=%d\n", conchFile->h,
(pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"),
osGetpid(0)));
@@ -45145,21 +40755,21 @@ static int proxyTakeConch(unixFile *pFile){
storeLastErrno(pFile, conchFile->lastErrno);
rc = SQLITE_IOERR_READ;
goto end_takeconch;
- }else if( readLen<=(PROXY_HEADERLEN+PROXY_HOSTIDLEN) ||
+ }else if( readLen<=(PROXY_HEADERLEN+PROXY_HOSTIDLEN) ||
readBuf[0]!=(char)PROXY_CONCHVERSION ){
- /* a short read or version format mismatch means we need to create a new
- ** conch file.
+ /* a short read or version format mismatch means we need to create a new
+ ** conch file.
*/
createConch = 1;
}
/* if the host id matches and the lock path already exists in the conch
- ** we'll try to use the path there, if we can't open that path, we'll
- ** retry with a new auto-generated path
+ ** we'll try to use the path there, if we can't open that path, we'll
+ ** retry with a new auto-generated path
*/
do { /* in case we need to try again for an :auto: named lock file */
if( !createConch && !forceNewLockPath ){
- hostIdMatch = !memcmp(&readBuf[PROXY_HEADERLEN], myHostID,
+ hostIdMatch = !memcmp(&readBuf[PROXY_HEADERLEN], myHostID,
PROXY_HOSTIDLEN);
/* if the conch has data compare the contents */
if( !pCtx->lockProxyPath ){
@@ -45168,7 +40778,7 @@ static int proxyTakeConch(unixFile *pFile){
*/
if( hostIdMatch ){
size_t pathLen = (readLen - PROXY_PATHINDEX);
-
+
if( pathLen>=MAXPATHLEN ){
pathLen=MAXPATHLEN-1;
}
@@ -45184,23 +40794,23 @@ static int proxyTakeConch(unixFile *pFile){
readLen-PROXY_PATHINDEX)
){
/* conch host and lock path match */
- goto end_takeconch;
+ goto end_takeconch;
}
}
-
+
/* if the conch isn't writable and doesn't match, we can't take it */
if( (conchFile->openFlags&O_RDWR) == 0 ){
rc = SQLITE_BUSY;
goto end_takeconch;
}
-
+
/* either the conch didn't match or we need to create a new one */
if( !pCtx->lockProxyPath ){
proxyGetLockPath(pCtx->dbPath, lockPath, MAXPATHLEN);
tempLockPath = lockPath;
/* create a copy of the lock path _only_ if the conch is taken */
}
-
+
/* update conch with host and path (this will fail if other process
** has a shared lock already), if the host id matches, use the big
** stick.
@@ -45211,7 +40821,7 @@ static int proxyTakeConch(unixFile *pFile){
/* We are trying for an exclusive lock but another thread in this
** same process is still holding a shared lock. */
rc = SQLITE_BUSY;
- } else {
+ } else {
rc = proxyConchLock(pFile, myHostID, EXCLUSIVE_LOCK);
}
}else{
@@ -45220,7 +40830,7 @@ static int proxyTakeConch(unixFile *pFile){
if( rc==SQLITE_OK ){
char writeBuffer[PROXY_MAXCONCHLEN];
int writeSize = 0;
-
+
writeBuffer[0] = (char)PROXY_CONCHVERSION;
memcpy(&writeBuffer[PROXY_HEADERLEN], myHostID, PROXY_HOSTIDLEN);
if( pCtx->lockProxyPath!=NULL ){
@@ -45233,8 +40843,8 @@ static int proxyTakeConch(unixFile *pFile){
robust_ftruncate(conchFile->h, writeSize);
rc = unixWrite((sqlite3_file *)conchFile, writeBuffer, writeSize, 0);
full_fsync(conchFile->h,0,0);
- /* If we created a new conch file (not just updated the contents of a
- ** valid conch file), try to match the permissions of the database
+ /* If we created a new conch file (not just updated the contents of a
+ ** valid conch file), try to match the permissions of the database
*/
if( rc==SQLITE_OK && createConch ){
struct stat buf;
@@ -45258,14 +40868,14 @@ static int proxyTakeConch(unixFile *pFile){
}
}else{
int code = errno;
- fprintf(stderr, "STAT FAILED[%d] with %d %s\n",
+ fprintf(stderr, "STAT FAILED[%d] with %d %s\n",
err, code, strerror(code));
#endif
}
}
}
conchFile->pMethod->xUnlock((sqlite3_file*)conchFile, SHARED_LOCK);
-
+
end_takeconch:
OSTRACE(("TRANSPROXY: CLOSE %d\n", pFile->h));
if( rc==SQLITE_OK && pFile->openFlags ){
@@ -45288,7 +40898,7 @@ static int proxyTakeConch(unixFile *pFile){
rc = proxyCreateUnixFile(path, &pCtx->lockProxy, 1);
if( rc!=SQLITE_OK && rc!=SQLITE_NOMEM && tryOldLockPath ){
/* we couldn't create the proxy lock file with the old lock file path
- ** so try again via auto-naming
+ ** so try again via auto-naming
*/
forceNewLockPath = 1;
tryOldLockPath = 0;
@@ -45308,7 +40918,7 @@ static int proxyTakeConch(unixFile *pFile){
}
if( rc==SQLITE_OK ){
pCtx->conchHeld = 1;
-
+
if( pCtx->lockProxy->pMethod == &afpIoMethods ){
afpLockingContext *afpCtx;
afpCtx = (afpLockingContext *)pCtx->lockProxy->lockingContext;
@@ -45320,7 +40930,7 @@ static int proxyTakeConch(unixFile *pFile){
OSTRACE(("TAKECONCH %d %s\n", conchFile->h,
rc==SQLITE_OK?"ok":"failed"));
return rc;
- } while (1); /* in case we need to retry the :auto: lock file -
+ } while (1); /* in case we need to retry the :auto: lock file -
** we should never get here except via the 'continue' call. */
}
}
@@ -45336,7 +40946,7 @@ static int proxyReleaseConch(unixFile *pFile){
pCtx = (proxyLockingContext *)pFile->lockingContext;
conchFile = pCtx->conchFile;
OSTRACE(("RELEASECONCH %d for %s pid=%d\n", conchFile->h,
- (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"),
+ (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"),
osGetpid(0)));
if( pCtx->conchHeld>0 ){
rc = conchFile->pMethod->xUnlock((sqlite3_file*)conchFile, NO_LOCK);
@@ -45364,13 +40974,13 @@ static int proxyCreateConchPathname(char *dbPath, char **pConchPath){
char *conchPath; /* buffer in which to construct conch name */
/* Allocate space for the conch filename and initialize the name to
- ** the name of the original database file. */
+ ** the name of the original database file. */
*pConchPath = conchPath = (char *)sqlite3_malloc64(len + 8);
if( conchPath==0 ){
return SQLITE_NOMEM_BKPT;
}
memcpy(conchPath, dbPath, len+1);
-
+
/* now insert a "." before the last / character */
for( i=(len-1); i>=0; i-- ){
if( conchPath[i]=='/' ){
@@ -45393,7 +41003,7 @@ static int proxyCreateConchPathname(char *dbPath, char **pConchPath){
/* Takes a fully configured proxy locking-style unix file and switches
-** the local lock file path
+** the local lock file path
*/
static int switchLockProxyPath(unixFile *pFile, const char *path) {
proxyLockingContext *pCtx = (proxyLockingContext*)pFile->lockingContext;
@@ -45402,7 +41012,7 @@ static int switchLockProxyPath(unixFile *pFile, const char *path) {
if( pFile->eFileLock!=NO_LOCK ){
return SQLITE_BUSY;
- }
+ }
/* nothing to do if the path is NULL, :auto: or matches the existing path */
if( !path || path[0]=='\0' || !strcmp(path, ":auto:") ||
@@ -45420,7 +41030,7 @@ static int switchLockProxyPath(unixFile *pFile, const char *path) {
sqlite3_free(oldPath);
pCtx->lockProxyPath = sqlite3DbStrDup(0, path);
}
-
+
return rc;
}
@@ -45434,7 +41044,7 @@ static int switchLockProxyPath(unixFile *pFile, const char *path) {
static int proxyGetDbPathForUnixFile(unixFile *pFile, char *dbPath){
#if defined(__APPLE__)
if( pFile->pMethod == &afpIoMethods ){
- /* afp style keeps a reference to the db path in the filePath field
+ /* afp style keeps a reference to the db path in the filePath field
** of the struct */
assert( (int)strlen((char*)pFile->lockingContext)<=MAXPATHLEN );
strlcpy(dbPath, ((afpLockingContext *)pFile->lockingContext)->dbPath,
@@ -45455,9 +41065,9 @@ static int proxyGetDbPathForUnixFile(unixFile *pFile, char *dbPath){
}
/*
-** Takes an already filled in unix file and alters it so all file locking
+** Takes an already filled in unix file and alters it so all file locking
** will be performed on the local proxy lock file. The following fields
-** are preserved in the locking context so that they can be restored and
+** are preserved in the locking context so that they can be restored and
** the unix structure properly cleaned up at close time:
** ->lockingContext
** ->pMethod
@@ -45467,7 +41077,7 @@ static int proxyTransformUnixFile(unixFile *pFile, const char *path) {
char dbPath[MAXPATHLEN+1]; /* Name of the database file */
char *lockPath=NULL;
int rc = SQLITE_OK;
-
+
if( pFile->eFileLock!=NO_LOCK ){
return SQLITE_BUSY;
}
@@ -45477,7 +41087,7 @@ static int proxyTransformUnixFile(unixFile *pFile, const char *path) {
}else{
lockPath=(char *)path;
}
-
+
OSTRACE(("TRANSPROXY %d for %s pid=%d\n", pFile->h,
(lockPath ? lockPath : ":auto:"), osGetpid(0)));
@@ -45511,7 +41121,7 @@ static int proxyTransformUnixFile(unixFile *pFile, const char *path) {
rc = SQLITE_OK;
}
}
- }
+ }
if( rc==SQLITE_OK && lockPath ){
pCtx->lockProxyPath = sqlite3DbStrDup(0, lockPath);
}
@@ -45523,7 +41133,7 @@ static int proxyTransformUnixFile(unixFile *pFile, const char *path) {
}
}
if( rc==SQLITE_OK ){
- /* all memory is allocated, proxys are created and assigned,
+ /* all memory is allocated, proxys are created and assigned,
** switch the locking context and pMethod then return.
*/
pCtx->oldLockingContext = pFile->lockingContext;
@@ -45531,12 +41141,12 @@ static int proxyTransformUnixFile(unixFile *pFile, const char *path) {
pCtx->pOldMethod = pFile->pMethod;
pFile->pMethod = &proxyIoMethods;
}else{
- if( pCtx->conchFile ){
+ if( pCtx->conchFile ){
pCtx->conchFile->pMethod->xClose((sqlite3_file *)pCtx->conchFile);
sqlite3_free(pCtx->conchFile);
}
sqlite3DbFree(0, pCtx->lockProxyPath);
- sqlite3_free(pCtx->conchFilePath);
+ sqlite3_free(pCtx->conchFilePath);
sqlite3_free(pCtx);
}
OSTRACE(("TRANSPROXY %d %s\n", pFile->h,
@@ -45574,7 +41184,7 @@ static int proxyFileControl(sqlite3_file *id, int op, void *pArg){
if( isProxyStyle ){
/* turn off proxy locking - not supported. If support is added for
** switching proxy locking mode off then it will need to fail if
- ** the journal mode is WAL mode.
+ ** the journal mode is WAL mode.
*/
rc = SQLITE_ERROR /*SQLITE_PROTOCOL? SQLITE_MISUSE?*/;
}else{
@@ -45584,9 +41194,9 @@ static int proxyFileControl(sqlite3_file *id, int op, void *pArg){
}else{
const char *proxyPath = (const char *)pArg;
if( isProxyStyle ){
- proxyLockingContext *pCtx =
+ proxyLockingContext *pCtx =
(proxyLockingContext*)pFile->lockingContext;
- if( !strcmp(pArg, ":auto:")
+ if( !strcmp(pArg, ":auto:")
|| (pCtx->lockProxyPath &&
!strncmp(pCtx->lockProxyPath, proxyPath, MAXPATHLEN))
){
@@ -45711,7 +41321,7 @@ static int proxyClose(sqlite3_file *id) {
unixFile *lockProxy = pCtx->lockProxy;
unixFile *conchFile = pCtx->conchFile;
int rc = SQLITE_OK;
-
+
if( lockProxy ){
rc = lockProxy->pMethod->xUnlock((sqlite3_file*)lockProxy, NO_LOCK);
if( rc ) return rc;
@@ -45748,7 +41358,7 @@ static int proxyClose(sqlite3_file *id) {
** The proxy locking style is intended for use with AFP filesystems.
** And since AFP is only supported on MacOSX, the proxy locking is also
** restricted to MacOSX.
-**
+**
**
******************* End of the proxy lock implementation **********************
******************************************************************************/
@@ -45766,8 +41376,8 @@ static int proxyClose(sqlite3_file *id) {
** necessarily been initialized when this routine is called, and so they
** should not be used.
*/
-SQLITE_API int sqlite3_os_init(void){
- /*
+SQLITE_API int sqlite3_os_init(void){
+ /*
** The following macro defines an initializer for an sqlite3_vfs object.
** The name of the VFS is NAME. The pAppData is a pointer to a pointer
** to the "finder" function. (pAppData is a pointer to a pointer because
@@ -45783,7 +41393,7 @@ SQLITE_API int sqlite3_os_init(void){
**
** Most finders simply return a pointer to a fixed sqlite3_io_methods
** object. But the "autolockIoFinder" available on MacOSX does a little
- ** more than that; it looks at the filesystem type that hosts the
+ ** more than that; it looks at the filesystem type that hosts the
** database file and tries to choose an locking method appropriate for
** that filesystem time.
*/
@@ -45856,7 +41466,7 @@ SQLITE_API int sqlite3_os_init(void){
sqlite3_vfs_register(&aVfs[i], i==0);
}
unixBigLock = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_VFS1);
- return SQLITE_OK;
+ return SQLITE_OK;
}
/*
@@ -45866,11 +41476,11 @@ SQLITE_API int sqlite3_os_init(void){
** to release dynamically allocated objects. But not on unix.
** This routine is a no-op for unix.
*/
-SQLITE_API int sqlite3_os_end(void){
+SQLITE_API int sqlite3_os_end(void){
unixBigLock = 0;
- return SQLITE_OK;
+ return SQLITE_OK;
}
-
+
#endif /* SQLITE_OS_UNIX */
/************** End of os_unix.c *********************************************/
@@ -45953,7 +41563,7 @@ SQLITE_API int sqlite3_os_end(void){
******************************************************************************
**
** This file contains inline asm code for retrieving "high-performance"
-** counters for x86 class CPUs.
+** counters for x86 and x86_64 class CPUs.
*/
#ifndef SQLITE_HWTIME_H
#define SQLITE_HWTIME_H
@@ -45964,8 +41574,9 @@ SQLITE_API int sqlite3_os_end(void){
** processor and returns that value. This can be used for high-res
** profiling.
*/
-#if (defined(__GNUC__) || defined(_MSC_VER)) && \
- (defined(i386) || defined(__i386__) || defined(_M_IX86))
+#if !defined(__STRICT_ANSI__) && \
+ (defined(__GNUC__) || defined(_MSC_VER)) && \
+ (defined(i386) || defined(__i386__) || defined(_M_IX86))
#if defined(__GNUC__)
@@ -45986,15 +41597,15 @@ SQLITE_API int sqlite3_os_end(void){
#endif
-#elif (defined(__GNUC__) && defined(__x86_64__))
+#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__x86_64__))
__inline__ sqlite_uint64 sqlite3Hwtime(void){
unsigned long val;
__asm__ __volatile__ ("rdtsc" : "=A" (val));
return val;
}
-
-#elif (defined(__GNUC__) && defined(__ppc__))
+
+#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__ppc__))
__inline__ sqlite_uint64 sqlite3Hwtime(void){
unsigned long long retval;
@@ -46011,14 +41622,13 @@ SQLITE_API int sqlite3_os_end(void){
#else
- #error Need implementation of sqlite3Hwtime() for your platform.
-
/*
- ** To compile without implementing sqlite3Hwtime() for your platform,
- ** you can remove the above #error and use the following
- ** stub function. You will lose timing support for many
- ** of the debugging and testing utilities, but it should at
- ** least compile and run.
+ ** asm() is needed for hardware timing support. Without asm(),
+ ** disable the sqlite3Hwtime() routine.
+ **
+ ** sqlite3Hwtime() is only used for some obscure debugging
+ ** and analysis configurations, not in any deliverable, so this
+ ** should not be a great loss.
*/
SQLITE_PRIVATE sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); }
@@ -46155,14 +41765,6 @@ SQLITE_API extern int sqlite3_open_file_count;
# define NTDDI_WINTHRESHOLD 0x06040000
#endif
-/*
-** This constant is needed by the winAccess function; therefore, define
-** it when it is missing from the SDK header files.
-*/
-#ifndef FILE_ATTRIBUTE_REPARSE_POINT
-# define FILE_ATTRIBUTE_REPARSE_POINT 0x00000400
-#endif
-
/*
** Check to see if the GetVersionEx[AW] functions are deprecated on the
** target system. GetVersionEx was first deprecated in Win8.1.
@@ -47373,17 +42975,17 @@ SQLITE_API int sqlite3_win32_compact_heap(LPUINT pnLargest){
*/
SQLITE_API int sqlite3_win32_reset_heap(){
int rc;
- MUTEX_LOGIC( sqlite3_mutex *pMaster; ) /* The main static mutex */
+ MUTEX_LOGIC( sqlite3_mutex *pMainMtx; ) /* The main static mutex */
MUTEX_LOGIC( sqlite3_mutex *pMem; ) /* The memsys static mutex */
- MUTEX_LOGIC( pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
+ MUTEX_LOGIC( pMainMtx = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); )
MUTEX_LOGIC( pMem = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MEM); )
- sqlite3_mutex_enter(pMaster);
+ sqlite3_mutex_enter(pMainMtx);
sqlite3_mutex_enter(pMem);
winMemAssertMagic();
if( winMemGetHeap()!=NULL && winMemGetOwned() && sqlite3_memory_used()==0 ){
/*
** At this point, there should be no outstanding memory allocations on
- ** the heap. Also, since both the master and memsys locks are currently
+ ** the heap. Also, since both the main and memsys locks are currently
** being held by us, no other function (i.e. from another thread) should
** be able to even access the heap. Attempt to destroy and recreate our
** isolated Win32 native heap now.
@@ -47406,7 +43008,7 @@ SQLITE_API int sqlite3_win32_reset_heap(){
rc = SQLITE_BUSY;
}
sqlite3_mutex_leave(pMem);
- sqlite3_mutex_leave(pMaster);
+ sqlite3_mutex_leave(pMainMtx);
return rc;
}
#endif /* SQLITE_WIN32_MALLOC */
@@ -49585,6 +45187,7 @@ static void winModeBit(winFile *pFile, unsigned char mask, int *pArg){
/* Forward references to VFS helper methods used for temporary files */
static int winGetTempname(sqlite3_vfs *, char **);
static int winIsDir(const void *);
+static BOOL winIsLongPathPrefix(const char *);
static BOOL winIsDriveLetterAndColon(const char *);
/*
@@ -51105,7 +46708,7 @@ static int winOpen(
#ifndef NDEBUG
int isOpenJournal = (isCreate && (
- eType==SQLITE_OPEN_MASTER_JOURNAL
+ eType==SQLITE_OPEN_SUPER_JOURNAL
|| eType==SQLITE_OPEN_MAIN_JOURNAL
|| eType==SQLITE_OPEN_WAL
));
@@ -51126,17 +46729,17 @@ static int winOpen(
assert(isExclusive==0 || isCreate);
assert(isDelete==0 || isCreate);
- /* The main DB, main journal, WAL file and master journal are never
+ /* The main DB, main journal, WAL file and super-journal are never
** automatically deleted. Nor are they ever temporary files. */
assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_DB );
assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_JOURNAL );
- assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MASTER_JOURNAL );
+ assert( (!isDelete && zName) || eType!=SQLITE_OPEN_SUPER_JOURNAL );
assert( (!isDelete && zName) || eType!=SQLITE_OPEN_WAL );
/* Assert that the upper layer has set one of the "file-type" flags. */
assert( eType==SQLITE_OPEN_MAIN_DB || eType==SQLITE_OPEN_TEMP_DB
|| eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_TEMP_JOURNAL
- || eType==SQLITE_OPEN_SUBJOURNAL || eType==SQLITE_OPEN_MASTER_JOURNAL
+ || eType==SQLITE_OPEN_SUBJOURNAL || eType==SQLITE_OPEN_SUPER_JOURNAL
|| eType==SQLITE_OPEN_TRANSIENT_DB || eType==SQLITE_OPEN_WAL
);
@@ -51348,13 +46951,15 @@ static int winOpen(
}
sqlite3_free(zTmpname);
- pFile->pMethod = pAppData ? pAppData->pMethod : &winIoMethod;
+ id->pMethods = pAppData ? pAppData->pMethod : &winIoMethod;
pFile->pVfs = pVfs;
pFile->h = h;
if( isReadonly ){
pFile->ctrlFlags |= WINFILE_RDONLY;
}
- if( sqlite3_uri_boolean(zName, "psow", SQLITE_POWERSAFE_OVERWRITE) ){
+ if( (flags & SQLITE_OPEN_MAIN_DB)
+ && sqlite3_uri_boolean(zName, "psow", SQLITE_POWERSAFE_OVERWRITE)
+ ){
pFile->ctrlFlags |= WINFILE_PSOW;
}
pFile->lastErrno = NO_ERROR;
@@ -51555,10 +47160,6 @@ static int winAccess(
rc = attr!=INVALID_FILE_ATTRIBUTES &&
(attr & FILE_ATTRIBUTE_READONLY)==0;
break;
- case SQLITE_ACCESS_SYMLINK:
- rc = attr!=INVALID_FILE_ATTRIBUTES &&
- (attr & FILE_ATTRIBUTE_REPARSE_POINT)!=0;
- break;
default:
assert(!"Invalid flags argument");
}
@@ -51568,6 +47169,17 @@ static int winAccess(
return SQLITE_OK;
}
+/*
+** Returns non-zero if the specified path name starts with the "long path"
+** prefix.
+*/
+static BOOL winIsLongPathPrefix(
+ const char *zPathname
+){
+ return ( zPathname[0]=='\\' && zPathname[1]=='\\'
+ && zPathname[2]=='?' && zPathname[3]=='\\' );
+}
+
/*
** Returns non-zero if the specified path name starts with a drive letter
** followed by a colon character.
@@ -51632,10 +47244,11 @@ static int winFullPathname(
char *zOut;
#endif
- /* If this path name begins with "/X:", where "X" is any alphabetic
- ** character, discard the initial "/" from the pathname.
+ /* If this path name begins with "/X:" or "\\?\", where "X" is any
+ ** alphabetic character, discard the initial "/" from the pathname.
*/
- if( zRelative[0]=='/' && winIsDriveLetterAndColon(zRelative+1) ){
+ if( zRelative[0]=='/' && (winIsDriveLetterAndColon(zRelative+1)
+ || winIsLongPathPrefix(zRelative+1)) ){
zRelative++;
}
@@ -52307,7 +47920,7 @@ static sqlite3_vfs memdb_vfs = {
1024, /* mxPathname */
0, /* pNext */
"memdb", /* zName */
- 0, /* pAppData (set when registered) */
+ 0, /* pAppData (set when registered) */
memdbOpen, /* xOpen */
0, /* memdbDelete, */ /* xDelete */
memdbAccess, /* xAccess */
@@ -52332,7 +47945,7 @@ static const sqlite3_io_methods memdb_io_methods = {
memdbSync, /* xSync */
memdbFileSize, /* xFileSize */
memdbLock, /* xLock */
- memdbLock, /* xUnlock - same as xLock in this case */
+ memdbLock, /* xUnlock - same as xLock in this case */
0, /* memdbCheckReservedLock, */ /* xCheckReservedLock */
memdbFileControl, /* xFileControl */
0, /* memdbSectorSize,*/ /* xSectorSize */
@@ -52363,9 +47976,9 @@ static int memdbClose(sqlite3_file *pFile){
** Read data from an memdb-file.
*/
static int memdbRead(
- sqlite3_file *pFile,
- void *zBuf,
- int iAmt,
+ sqlite3_file *pFile,
+ void *zBuf,
+ int iAmt,
sqlite_int64 iOfst
){
MemFile *p = (MemFile *)pFile;
@@ -52391,7 +48004,7 @@ static int memdbEnlarge(MemFile *p, sqlite3_int64 newSz){
}
newSz *= 2;
if( newSz>p->szMax ) newSz = p->szMax;
- pNew = sqlite3_realloc64(p->aData, newSz);
+ pNew = sqlite3Realloc(p->aData, newSz);
if( pNew==0 ) return SQLITE_NOMEM;
p->aData = pNew;
p->szAlloc = newSz;
@@ -52433,7 +48046,7 @@ static int memdbWrite(
static int memdbTruncate(sqlite3_file *pFile, sqlite_int64 size){
MemFile *p = (MemFile *)pFile;
if( NEVER(size>p->sz) ) return SQLITE_FULL;
- p->sz = size;
+ p->sz = size;
return SQLITE_OK;
}
@@ -52458,7 +48071,7 @@ static int memdbFileSize(sqlite3_file *pFile, sqlite_int64 *pSize){
*/
static int memdbLock(sqlite3_file *pFile, int eLock){
MemFile *p = (MemFile *)pFile;
- if( eLock>SQLITE_LOCK_SHARED
+ if( eLock>SQLITE_LOCK_SHARED
&& (p->mFlags & SQLITE_DESERIALIZE_READONLY)!=0
){
return SQLITE_READONLY;
@@ -52516,7 +48129,7 @@ static int memdbSectorSize(sqlite3_file *pFile){
** Return the device characteristic flags supported by an memdb-file.
*/
static int memdbDeviceCharacteristics(sqlite3_file *pFile){
- return SQLITE_IOCAP_ATOMIC |
+ return SQLITE_IOCAP_ATOMIC |
SQLITE_IOCAP_POWERSAFE_OVERWRITE |
SQLITE_IOCAP_SAFE_APPEND |
SQLITE_IOCAP_SEQUENTIAL;
@@ -52564,12 +48177,12 @@ static int memdbOpen(
p->mFlags = SQLITE_DESERIALIZE_RESIZEABLE | SQLITE_DESERIALIZE_FREEONCLOSE;
assert( pOutFlags!=0 ); /* True because flags==SQLITE_OPEN_MAIN_DB */
*pOutFlags = flags | SQLITE_OPEN_MEMORY;
- p->base.pMethods = &memdb_io_methods;
+ pFile->pMethods = &memdb_io_methods;
p->szMax = sqlite3GlobalConfig.mxMemdbSize;
return SQLITE_OK;
}
-#if 0 /* Only used to delete rollback journals, master journals, and WAL
+#if 0 /* Only used to delete rollback journals, super-journals, and WAL
** files, none of which exist in memdb. So this routine is never used */
/*
** Delete the file located at zPath. If the dirSync argument is true,
@@ -52588,9 +48201,9 @@ static int memdbDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){
** With memdb, no files ever exist on disk. So always return false.
*/
static int memdbAccess(
- sqlite3_vfs *pVfs,
- const char *zPath,
- int flags,
+ sqlite3_vfs *pVfs,
+ const char *zPath,
+ int flags,
int *pResOut
){
*pResOut = 0;
@@ -52603,9 +48216,9 @@ static int memdbAccess(
** of at least (INST_MAX_PATHNAME+1) bytes.
*/
static int memdbFullPathname(
- sqlite3_vfs *pVfs,
- const char *zPath,
- int nOut,
+ sqlite3_vfs *pVfs,
+ const char *zPath,
+ int nOut,
char *zOut
){
sqlite3_snprintf(nOut, zOut, "%s", zPath);
@@ -52621,7 +48234,7 @@ static void *memdbDlOpen(sqlite3_vfs *pVfs, const char *zPath){
/*
** Populate the buffer zErrMsg (size nByte bytes) with a human readable
-** utf-8 string describing the most recent error encountered associated
+** utf-8 string describing the most recent error encountered associated
** with dynamic libraries.
*/
static void memdbDlError(sqlite3_vfs *pVfs, int nByte, char *zErrMsg){
@@ -52643,7 +48256,7 @@ static void memdbDlClose(sqlite3_vfs *pVfs, void *pHandle){
}
/*
-** Populate the buffer pointed to by zBufOut with nByte bytes of
+** Populate the buffer pointed to by zBufOut with nByte bytes of
** random data.
*/
static int memdbRandomness(sqlite3_vfs *pVfs, int nByte, char *zBufOut){
@@ -52651,7 +48264,7 @@ static int memdbRandomness(sqlite3_vfs *pVfs, int nByte, char *zBufOut){
}
/*
-** Sleep for nMicro microseconds. Return the number of microseconds
+** Sleep for nMicro microseconds. Return the number of microseconds
** actually slept.
*/
static int memdbSleep(sqlite3_vfs *pVfs, int nMicro){
@@ -52757,7 +48370,7 @@ SQLITE_API unsigned char *sqlite3_serialize(
}else{
memset(pTo, 0, szPage);
}
- sqlite3PagerUnref(pPage);
+ sqlite3PagerUnref(pPage);
}
}
}
@@ -52796,7 +48409,7 @@ SQLITE_API int sqlite3_deserialize(
if( iDb<0 ){
rc = SQLITE_ERROR;
goto end_deserialize;
- }
+ }
zSql = sqlite3_mprintf("ATTACH x AS %Q", zSchema);
rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0);
sqlite3_free(zSql);
@@ -52830,7 +48443,7 @@ end_deserialize:
return rc;
}
-/*
+/*
** This routine is called when the extension is loaded.
** Register the new VFS.
*/
@@ -52838,10 +48451,11 @@ SQLITE_PRIVATE int sqlite3MemdbInit(void){
sqlite3_vfs *pLower = sqlite3_vfs_find(0);
int sz = pLower->szOsFile;
memdb_vfs.pAppData = pLower;
- /* In all known configurations of SQLite, the size of a default
- ** sqlite3_file is greater than the size of a memdb sqlite3_file.
- ** Should that ever change, remove the following NEVER() */
- if( NEVER(szpCache==0 ) return;
N = sqlite3PcachePagecount(pCache);
@@ -53429,12 +49043,12 @@ static void pcacheManageDirtyList(PgHdr *pPage, u8 addRemove){
if( addRemove & PCACHE_DIRTYLIST_REMOVE ){
assert( pPage->pDirtyNext || pPage==p->pDirtyTail );
assert( pPage->pDirtyPrev || pPage==p->pDirty );
-
+
/* Update the PCache1.pSynced variable if necessary. */
if( p->pSynced==pPage ){
p->pSynced = pPage->pDirtyPrev;
}
-
+
if( pPage->pDirtyNext ){
pPage->pDirtyNext->pDirtyPrev = pPage->pDirtyPrev;
}else{
@@ -53444,7 +49058,7 @@ static void pcacheManageDirtyList(PgHdr *pPage, u8 addRemove){
if( pPage->pDirtyPrev ){
pPage->pDirtyPrev->pDirtyNext = pPage->pDirtyNext;
}else{
- /* If there are now no dirty pages in the cache, set eCreate to 2.
+ /* If there are now no dirty pages in the cache, set eCreate to 2.
** This is an optimization that allows sqlite3PcacheFetch() to skip
** searching for a dirty page to eject from the cache when it might
** otherwise have to. */
@@ -53473,11 +49087,11 @@ static void pcacheManageDirtyList(PgHdr *pPage, u8 addRemove){
p->pDirty = pPage;
/* If pSynced is NULL and this page has a clear NEED_SYNC flag, set
- ** pSynced to point to it. Checking the NEED_SYNC flag is an
+ ** pSynced to point to it. Checking the NEED_SYNC flag is an
** optimization, as if pSynced points to a page with the NEED_SYNC
- ** flag set sqlite3PcacheFetchStress() searches through all newer
+ ** flag set sqlite3PcacheFetchStress() searches through all newer
** entries of the dirty-list for a page with NEED_SYNC clear anyway. */
- if( !p->pSynced
+ if( !p->pSynced
&& 0==(pPage->flags&PGHDR_NEED_SYNC) /*OPTIMIZATION-IF-FALSE*/
){
p->pSynced = pPage;
@@ -53518,7 +49132,7 @@ static int numberOfCachePages(PCache *p){
/*************************************************** General Interfaces ******
**
-** Initialize and shutdown the page cache subsystem. Neither of these
+** Initialize and shutdown the page cache subsystem. Neither of these
** functions are threadsafe.
*/
SQLITE_PRIVATE int sqlite3PcacheInitialize(void){
@@ -53545,8 +49159,8 @@ SQLITE_PRIVATE int sqlite3PcacheSize(void){ return sizeof(PCache); }
/*
** Create a new PCache object. Storage space to hold the object
-** has already been allocated and is passed in as the p pointer.
-** The caller discovers how much space needs to be allocated by
+** has already been allocated and is passed in as the p pointer.
+** The caller discovers how much space needs to be allocated by
** calling sqlite3PcacheSize().
**
** szExtra is some extra space allocated for each page. The first
@@ -53658,7 +49272,7 @@ SQLITE_PRIVATE sqlite3_pcache_page *sqlite3PcacheFetch(
/*
** If the sqlite3PcacheFetch() routine is unable to allocate a new
** page because no clean pages are available for reuse and the cache
-** size limit has been reached, then this routine can be invoked to
+** size limit has been reached, then this routine can be invoked to
** try harder to allocate a page. This routine might invoke the stress
** callback to spill dirty pages to the journal. It will then try to
** allocate the new page and will only fail to allocate a new page on
@@ -53675,17 +49289,17 @@ SQLITE_PRIVATE int sqlite3PcacheFetchStress(
if( pCache->eCreate==2 ) return 0;
if( sqlite3PcachePagecount(pCache)>pCache->szSpill ){
- /* Find a dirty page to write-out and recycle. First try to find a
+ /* Find a dirty page to write-out and recycle. First try to find a
** page that does not require a journal-sync (one with PGHDR_NEED_SYNC
- ** cleared), but if that is not possible settle for any other
+ ** cleared), but if that is not possible settle for any other
** unreferenced dirty page.
**
** If the LRU page in the dirty list that has a clear PGHDR_NEED_SYNC
** flag is currently referenced, then the following may leave pSynced
** set incorrectly (pointing to other than the LRU page with NEED_SYNC
** cleared). This is Ok, as pSynced is just an optimization. */
- for(pPg=pCache->pSynced;
- pPg && (pPg->nRef || (pPg->flags&PGHDR_NEED_SYNC));
+ for(pPg=pCache->pSynced;
+ pPg && (pPg->nRef || (pPg->flags&PGHDR_NEED_SYNC));
pPg=pPg->pDirtyPrev
);
pCache->pSynced = pPg;
@@ -53695,7 +49309,7 @@ SQLITE_PRIVATE int sqlite3PcacheFetchStress(
if( pPg ){
int rc;
#ifdef SQLITE_LOG_CACHE_SPILL
- sqlite3_log(SQLITE_FULL,
+ sqlite3_log(SQLITE_FULL,
"spill page %d making room for %d - cache used: %d/%d",
pPg->pgno, pgno,
sqlite3GlobalConfig.pcache2.xPagecount(pCache->pCache),
@@ -53880,7 +49494,7 @@ SQLITE_PRIVATE void sqlite3PcacheClearSyncFlags(PCache *pCache){
}
/*
-** Change the page number of page p to newPgno.
+** Change the page number of page p to newPgno.
*/
SQLITE_PRIVATE void sqlite3PcacheMove(PgHdr *p, Pgno newPgno){
PCache *pCache = p->pCache;
@@ -53943,7 +49557,7 @@ SQLITE_PRIVATE void sqlite3PcacheClose(PCache *pCache){
sqlite3GlobalConfig.pcache2.xDestroy(pCache->pCache);
}
-/*
+/*
** Discard the contents of the cache.
*/
SQLITE_PRIVATE void sqlite3PcacheClear(PCache *pCache){
@@ -54034,7 +49648,7 @@ SQLITE_PRIVATE PgHdr *sqlite3PcacheDirtyList(PCache *pCache){
return pcacheSortDirtyList(pCache->pDirty);
}
-/*
+/*
** Return the total number of references to all pages held by the cache.
**
** This is not the total number of pages referenced, but the sum of the
@@ -54051,7 +49665,7 @@ SQLITE_PRIVATE int sqlite3PcachePageRefcount(PgHdr *p){
return p->nRef;
}
-/*
+/*
** Return the total number of pages in the cache.
*/
SQLITE_PRIVATE int sqlite3PcachePagecount(PCache *pCache){
@@ -54093,7 +49707,7 @@ SQLITE_PRIVATE int sqlite3PcacheSetSpillsize(PCache *p, int mxPage){
p->szSpill = mxPage;
}
res = numberOfCachePages(p);
- if( resszSpill ) res = p->szSpill;
+ if( resszSpill ) res = p->szSpill;
return res;
}
@@ -54124,7 +49738,7 @@ SQLITE_PRIVATE int sqlite3PCachePercentDirty(PCache *pCache){
}
#ifdef SQLITE_DIRECT_OVERFLOW_READ
-/*
+/*
** Return true if there are one or more dirty pages in the cache. Else false.
*/
SQLITE_PRIVATE int sqlite3PCacheIsDirty(PCache *pCache){
@@ -54213,7 +49827,7 @@ SQLITE_PRIVATE void sqlite3PcacheIterateDirty(PCache *pCache, void (*xIter)(PgHd
**
** The third case is a chunk of heap memory (defaulting to 100 pages worth)
** that is allocated when the page cache is created. The size of the local
-** bulk allocation can be adjusted using
+** bulk allocation can be adjusted using
**
** sqlite3_config(SQLITE_CONFIG_PAGECACHE, (void*)0, 0, N).
**
@@ -54238,16 +49852,16 @@ typedef struct PgFreeslot PgFreeslot;
typedef struct PGroup PGroup;
/*
-** Each cache entry is represented by an instance of the following
+** Each cache entry is represented by an instance of the following
** structure. Unless SQLITE_PCACHE_SEPARATE_HEADER is defined, a buffer of
-** PgHdr1.pCache->szPage bytes is allocated directly before this structure
+** PgHdr1.pCache->szPage bytes is allocated directly before this structure
** in memory.
**
** Note: Variables isBulkLocal and isAnchor were once type "u8". That works,
-** but causes a 2-byte gap in the structure for most architectures (since
+** but causes a 2-byte gap in the structure for most architectures (since
** pointers must be either 4 or 8-byte aligned). As this structure is located
** in memory directly after the associated page data, if the database is
-** corrupt, code at the b-tree layer may overread the page buffer and
+** corrupt, code at the b-tree layer may overread the page buffer and
** read part of this structure before the corruption is detected. This
** can cause a valgrind error if the unitialized gap is accessed. Using u16
** ensures there is no such gap, and therefore no bytes of unitialized memory
@@ -54272,7 +49886,7 @@ struct PgHdr1 {
#define PAGE_IS_PINNED(p) ((p)->pLruNext==0)
#define PAGE_IS_UNPINNED(p) ((p)->pLruNext!=0)
-/* Each page cache (or PCache) belongs to a PGroup. A PGroup is a set
+/* Each page cache (or PCache) belongs to a PGroup. A PGroup is a set
** of one or more PCaches that are able to recycle each other's unpinned
** pages when they are under memory pressure. A PGroup is an instance of
** the following object.
@@ -54308,13 +49922,13 @@ struct PGroup {
** temporary or transient database) has a single page cache which
** is an instance of this object.
**
-** Pointers to structures of this type are cast and returned as
+** Pointers to structures of this type are cast and returned as
** opaque sqlite3_pcache* handles.
*/
struct PCache1 {
/* Cache configuration parameters. Page size (szPage) and the purgeable
** flag (bPurgeable) and the pnPurgeable pointer are all set when the
- ** cache is created and are never changed thereafter. nMax may be
+ ** cache is created and are never changed thereafter. nMax may be
** modified at any time by a call to the pcache1Cachesize() method.
** The PGroup mutex must be held when accessing nMax.
*/
@@ -54362,7 +49976,7 @@ static SQLITE_WSD struct PCacheGlobal {
*/
int isInit; /* True if initialized */
int separateCache; /* Use a new PGroup for each PCache */
- int nInitPage; /* Initial bulk allocation size */
+ int nInitPage; /* Initial bulk allocation size */
int szSlot; /* Size of each free slot */
int nSlot; /* The number of pcache slots */
int nReserve; /* Try to keep nFreeSlot above this */
@@ -54403,7 +50017,7 @@ static SQLITE_WSD struct PCacheGlobal {
/*
-** This function is called during initialization if a static buffer is
+** This function is called during initialization if a static buffer is
** supplied to use for the page-cache by passing the SQLITE_CONFIG_PAGECACHE
** verb to sqlite3_config(). Parameter pBuf points to an allocation large
** enough to contain 'n' buffers of 'sz' bytes each.
@@ -54473,8 +50087,8 @@ static int pcache1InitBulk(PCache1 *pCache){
/*
** Malloc function used within this file to allocate space from the buffer
-** configured using sqlite3_config(SQLITE_CONFIG_PAGECACHE) option. If no
-** such buffer exists or there is no space left in it, this function falls
+** configured using sqlite3_config(SQLITE_CONFIG_PAGECACHE) option. If no
+** such buffer exists or there is no space left in it, this function falls
** back to sqlite3Malloc().
**
** Multiple threads can run this routine at the same time. Global variables
@@ -54581,7 +50195,7 @@ static PgHdr1 *pcache1AllocPage(PCache1 *pCache, int benignMalloc){
}else{
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
/* The group mutex must be released before pcache1Alloc() is called. This
- ** is because it might call sqlite3_release_memory(), which assumes that
+ ** is because it might call sqlite3_release_memory(), which assumes that
** this mutex is not held. */
assert( pcache1.separateCache==0 );
assert( pCache->pGroup==&pcache1.grp );
@@ -54598,13 +50212,15 @@ static PgHdr1 *pcache1AllocPage(PCache1 *pCache, int benignMalloc){
}
#else
pPg = pcache1Alloc(pCache->szAlloc);
- p = (PgHdr1 *)&((u8 *)pPg)[pCache->szPage];
#endif
if( benignMalloc ){ sqlite3EndBenignMalloc(); }
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
pcache1EnterMutex(pCache->pGroup);
#endif
if( pPg==0 ) return 0;
+#ifndef SQLITE_PCACHE_SEPARATE_HEADER
+ p = (PgHdr1 *)&((u8 *)pPg)[pCache->szPage];
+#endif
p->page.pBuf = pPg;
p->page.pExtra = &p[1];
p->isBulkLocal = 0;
@@ -54720,7 +50336,7 @@ static void pcache1ResizeHash(PCache1 *p){
}
/*
-** This function is used internally to remove the page pPage from the
+** This function is used internally to remove the page pPage from the
** PGroup LRU list, if is part of it. If pPage is not part of the PGroup
** LRU list, then this function is a no-op.
**
@@ -54745,7 +50361,7 @@ static PgHdr1 *pcache1PinPage(PgHdr1 *pPage){
/*
-** Remove the page supplied as an argument from the hash table
+** Remove the page supplied as an argument from the hash table
** (PCache1.apHash structure) that it is currently stored in.
** Also free the page if freePage is true.
**
@@ -54788,8 +50404,8 @@ static void pcache1EnforceMaxPage(PCache1 *pCache){
}
/*
-** Discard all pages from cache pCache with a page number (key value)
-** greater than or equal to iLimit. Any pinned pages that meet this
+** Discard all pages from cache pCache with a page number (key value)
+** greater than or equal to iLimit. Any pinned pages that meet this
** criteria are unpinned before they are discarded.
**
** The PCache mutex must be held when this function is called.
@@ -54821,7 +50437,7 @@ static void pcache1TruncateUnsafe(
PgHdr1 **pp;
PgHdr1 *pPage;
assert( hnHash );
- pp = &pCache->apHash[h];
+ pp = &pCache->apHash[h];
while( (pPage = *pp)!=0 ){
if( pPage->iKey>=iLimit ){
pCache->nPage--;
@@ -54860,7 +50476,7 @@ static int pcache1Init(void *NotUsed){
**
** * Use a unified cache in single-threaded applications that have
** configured a start-time buffer for use as page-cache memory using
- ** sqlite3_config(SQLITE_CONFIG_PAGECACHE, pBuf, sz, N) with non-NULL
+ ** sqlite3_config(SQLITE_CONFIG_PAGECACHE, pBuf, sz, N) with non-NULL
** pBuf argument.
**
** * Otherwise use separate caches (mode-1)
@@ -54895,7 +50511,7 @@ static int pcache1Init(void *NotUsed){
/*
** Implementation of the sqlite3_pcache.xShutdown method.
-** Note that the static mutex allocated in xInit does
+** Note that the static mutex allocated in xInit does
** not need to be freed.
*/
static void pcache1Shutdown(void *NotUsed){
@@ -54958,7 +50574,7 @@ static sqlite3_pcache *pcache1Create(int szPage, int szExtra, int bPurgeable){
}
/*
-** Implementation of the sqlite3_pcache.xCachesize method.
+** Implementation of the sqlite3_pcache.xCachesize method.
**
** Configure the cache_size limit for a cache.
*/
@@ -54977,7 +50593,7 @@ static void pcache1Cachesize(sqlite3_pcache *p, int nMax){
}
/*
-** Implementation of the sqlite3_pcache.xShrink method.
+** Implementation of the sqlite3_pcache.xShrink method.
**
** Free up as much memory as possible.
*/
@@ -54996,7 +50612,7 @@ static void pcache1Shrink(sqlite3_pcache *p){
}
/*
-** Implementation of the sqlite3_pcache.xPagecount method.
+** Implementation of the sqlite3_pcache.xPagecount method.
*/
static int pcache1Pagecount(sqlite3_pcache *p){
int n;
@@ -55017,8 +50633,8 @@ static int pcache1Pagecount(sqlite3_pcache *p){
** for these steps, the main pcache1Fetch() procedure can run faster.
*/
static SQLITE_NOINLINE PgHdr1 *pcache1FetchStage2(
- PCache1 *pCache,
- unsigned int iKey,
+ PCache1 *pCache,
+ unsigned int iKey,
int createFlag
){
unsigned int nPinned;
@@ -55060,8 +50676,8 @@ static SQLITE_NOINLINE PgHdr1 *pcache1FetchStage2(
}
}
- /* Step 5. If a usable page buffer has still not been found,
- ** attempt to allocate a new one.
+ /* Step 5. If a usable page buffer has still not been found,
+ ** attempt to allocate a new one.
*/
if( !pPage ){
pPage = pcache1AllocPage(pCache, createFlag==1);
@@ -55086,13 +50702,13 @@ static SQLITE_NOINLINE PgHdr1 *pcache1FetchStage2(
}
/*
-** Implementation of the sqlite3_pcache.xFetch method.
+** Implementation of the sqlite3_pcache.xFetch method.
**
** Fetch a page by key value.
**
** Whether or not a new page may be allocated by this function depends on
** the value of the createFlag argument. 0 means do not allocate a new
-** page. 1 means allocate a new page if space is easily available. 2
+** page. 1 means allocate a new page if space is easily available. 2
** means to try really hard to allocate a new page.
**
** For a non-purgeable cache (a cache used as the storage for an in-memory
@@ -55103,7 +50719,7 @@ static SQLITE_NOINLINE PgHdr1 *pcache1FetchStage2(
** There are three different approaches to obtaining space for a page,
** depending on the value of parameter createFlag (which may be 0, 1 or 2).
**
-** 1. Regardless of the value of createFlag, the cache is searched for a
+** 1. Regardless of the value of createFlag, the cache is searched for a
** copy of the requested page. If one is found, it is returned.
**
** 2. If createFlag==0 and the page is not already in the cache, NULL is
@@ -55117,13 +50733,13 @@ static SQLITE_NOINLINE PgHdr1 *pcache1FetchStage2(
** PCache1.nMax, or
**
** (b) the number of pages pinned by the cache is greater than
-** the sum of nMax for all purgeable caches, less the sum of
+** the sum of nMax for all purgeable caches, less the sum of
** nMin for all other purgeable caches, or
**
** 4. If none of the first three conditions apply and the cache is marked
** as purgeable, and if one of the following is true:
**
-** (a) The number of pages allocated for the cache is already
+** (a) The number of pages allocated for the cache is already
** PCache1.nMax, or
**
** (b) The number of pages allocated for all purgeable caches is
@@ -55135,7 +50751,7 @@ static SQLITE_NOINLINE PgHdr1 *pcache1FetchStage2(
**
** then attempt to recycle a page from the LRU list. If it is the right
** size, return the recycled buffer. Otherwise, free the buffer and
-** proceed to step 5.
+** proceed to step 5.
**
** 5. Otherwise, allocate and return a new page buffer.
**
@@ -55145,8 +50761,8 @@ static SQLITE_NOINLINE PgHdr1 *pcache1FetchStage2(
** invokes the appropriate routine.
*/
static PgHdr1 *pcache1FetchNoMutex(
- sqlite3_pcache *p,
- unsigned int iKey,
+ sqlite3_pcache *p,
+ unsigned int iKey,
int createFlag
){
PCache1 *pCache = (PCache1 *)p;
@@ -55175,8 +50791,8 @@ static PgHdr1 *pcache1FetchNoMutex(
}
#if PCACHE1_MIGHT_USE_GROUP_MUTEX
static PgHdr1 *pcache1FetchWithMutex(
- sqlite3_pcache *p,
- unsigned int iKey,
+ sqlite3_pcache *p,
+ unsigned int iKey,
int createFlag
){
PCache1 *pCache = (PCache1 *)p;
@@ -55190,8 +50806,8 @@ static PgHdr1 *pcache1FetchWithMutex(
}
#endif
static sqlite3_pcache_page *pcache1Fetch(
- sqlite3_pcache *p,
- unsigned int iKey,
+ sqlite3_pcache *p,
+ unsigned int iKey,
int createFlag
){
#if PCACHE1_MIGHT_USE_GROUP_MUTEX || defined(SQLITE_DEBUG)
@@ -55221,18 +50837,18 @@ static sqlite3_pcache_page *pcache1Fetch(
** Mark a page as unpinned (eligible for asynchronous recycling).
*/
static void pcache1Unpin(
- sqlite3_pcache *p,
- sqlite3_pcache_page *pPg,
+ sqlite3_pcache *p,
+ sqlite3_pcache_page *pPg,
int reuseUnlikely
){
PCache1 *pCache = (PCache1 *)p;
PgHdr1 *pPage = (PgHdr1 *)pPg;
PGroup *pGroup = pCache->pGroup;
-
+
assert( pPage->pCache==pCache );
pcache1EnterMutex(pGroup);
- /* It is an error to call this function if the page is already
+ /* It is an error to call this function if the page is already
** part of the PGroup LRU list.
*/
assert( pPage->pLruNext==0 );
@@ -55253,7 +50869,7 @@ static void pcache1Unpin(
}
/*
-** Implementation of the sqlite3_pcache.xRekey method.
+** Implementation of the sqlite3_pcache.xRekey method.
*/
static void pcache1Rekey(
sqlite3_pcache *p,
@@ -55264,7 +50880,7 @@ static void pcache1Rekey(
PCache1 *pCache = (PCache1 *)p;
PgHdr1 *pPage = (PgHdr1 *)pPg;
PgHdr1 **pp;
- unsigned int h;
+ unsigned int h;
assert( pPage->iKey==iOld );
assert( pPage->pCache==pCache );
@@ -55289,7 +50905,7 @@ static void pcache1Rekey(
}
/*
-** Implementation of the sqlite3_pcache.xTruncate method.
+** Implementation of the sqlite3_pcache.xTruncate method.
**
** Discard all unpinned pages in the cache with a page number equal to
** or greater than parameter iLimit. Any pinned pages with a page number
@@ -55306,7 +50922,7 @@ static void pcache1Truncate(sqlite3_pcache *p, unsigned int iLimit){
}
/*
-** Implementation of the sqlite3_pcache.xDestroy method.
+** Implementation of the sqlite3_pcache.xDestroy method.
**
** Destroy a cache allocated using pcache1Create().
*/
@@ -55372,7 +50988,7 @@ SQLITE_PRIVATE sqlite3_mutex *sqlite3Pcache1Mutex(void){
** by the current thread may be sqlite3_free()ed.
**
** nReq is the number of bytes of memory required. Once this much has
-** been released, the function returns. The return value is the total number
+** been released, the function returns. The return value is the total number
** of bytes of memory released.
*/
SQLITE_PRIVATE int sqlite3PcacheReleaseMemory(int nReq){
@@ -55463,7 +51079,7 @@ SQLITE_PRIVATE void sqlite3PcacheStats(
** extracts the least value from the RowSet.
**
** The INSERT primitive might allocate additional memory. Memory is
-** allocated in chunks so most INSERTs do no allocation. There is an
+** allocated in chunks so most INSERTs do no allocation. There is an
** upper bound on the size of allocated memory. No memory is freed
** until DESTROY.
**
@@ -55511,7 +51127,7 @@ SQLITE_PRIVATE void sqlite3PcacheStats(
** in the list, pLeft points to the tree, and v is unused. The
** RowSet.pForest value points to the head of this forest list.
*/
-struct RowSetEntry {
+struct RowSetEntry {
i64 v; /* ROWID value for this entry */
struct RowSetEntry *pRight; /* Right subtree (larger entries) or list */
struct RowSetEntry *pLeft; /* Left subtree (smaller entries) */
@@ -55605,7 +51221,7 @@ SQLITE_PRIVATE void sqlite3RowSetDelete(void *pArg){
/*
** Allocate a new RowSetEntry object that is associated with the
** given RowSet. Return a pointer to the new and completely uninitialized
-** objected.
+** object.
**
** In an OOM situation, the RowSet.db->mallocFailed flag is set and this
** routine returns NULL.
@@ -55663,7 +51279,7 @@ SQLITE_PRIVATE void sqlite3RowSetInsert(RowSet *p, i64 rowid){
/*
** Merge two lists of RowSetEntry objects. Remove duplicates.
**
-** The input lists are connected via pRight pointers and are
+** The input lists are connected via pRight pointers and are
** assumed to each already be in sorted order.
*/
static struct RowSetEntry *rowSetEntryMerge(
@@ -55700,7 +51316,7 @@ static struct RowSetEntry *rowSetEntryMerge(
/*
** Sort all elements on the list of RowSetEntry objects into order of
** increasing v.
-*/
+*/
static struct RowSetEntry *rowSetEntrySort(struct RowSetEntry *pIn){
unsigned int i;
struct RowSetEntry *pNext, *aBucket[40];
@@ -55773,7 +51389,7 @@ static struct RowSetEntry *rowSetNDeepTree(
struct RowSetEntry *pLeft; /* Left subtree */
if( *ppList==0 ){ /*OPTIMIZATION-IF-TRUE*/
/* Prevent unnecessary deep recursion when we run out of entries */
- return 0;
+ return 0;
}
if( iDepth>1 ){ /*OPTIMIZATION-IF-TRUE*/
/* This branch causes a *balanced* tree to be generated. A valid tree
@@ -55881,7 +51497,7 @@ SQLITE_PRIVATE int sqlite3RowSetTest(RowSet *pRowSet, int iBatch, sqlite3_int64
if( p ){
struct RowSetEntry **ppPrevTree = &pRowSet->pForest;
if( (pRowSet->rsFlags & ROWSET_SORTED)==0 ){ /*OPTIMIZATION-IF-FALSE*/
- /* Only sort the current set of entiries if they need it */
+ /* Only sort the current set of entries if they need it */
p = rowSetEntrySort(p);
}
for(pTree = pRowSet->pForest; pTree; pTree=pTree->pRight){
@@ -55943,7 +51559,7 @@ SQLITE_PRIVATE int sqlite3RowSetTest(RowSet *pRowSet, int iBatch, sqlite3_int64
**
*************************************************************************
** This is the implementation of the page cache subsystem or "pager".
-**
+**
** The pager is used to access a database disk file. It implements
** atomic commit and rollback through the use of a journal file that
** is separate from the database file. The pager also implements file
@@ -55966,8 +51582,8 @@ SQLITE_PRIVATE int sqlite3RowSetTest(RowSet *pRowSet, int iBatch, sqlite3_int64
** May you share freely, never taking more than you give.
**
*************************************************************************
-** This header file defines the interface to the write-ahead logging
-** system. Refer to the comments below and the header comment attached to
+** This header file defines the interface to the write-ahead logging
+** system. Refer to the comments below and the header comment attached to
** the implementation of each function in log.c for further details.
*/
@@ -56006,8 +51622,8 @@ SQLITE_PRIVATE int sqlite3RowSetTest(RowSet *pRowSet, int iBatch, sqlite3_int64
#define WAL_SAVEPOINT_NDATA 4
-/* Connection to a write-ahead log (WAL) file.
-** There is one object of this type for each pager.
+/* Connection to a write-ahead log (WAL) file.
+** There is one object of this type for each pager.
*/
typedef struct Wal Wal;
@@ -56018,7 +51634,7 @@ SQLITE_PRIVATE int sqlite3WalClose(Wal *pWal, sqlite3*, int sync_flags, int, u8
/* Set the limiting size of a WAL file. */
SQLITE_PRIVATE void sqlite3WalLimit(Wal*, i64);
-/* Used by readers to open (lock) and close (unlock) a snapshot. A
+/* Used by readers to open (lock) and close (unlock) a snapshot. A
** snapshot is like a read-transaction. It is the state of the database
** at an instant in time. sqlite3WalOpenSnapshot gets a read lock and
** preserves the current state even if the other threads or processes
@@ -56053,7 +51669,7 @@ SQLITE_PRIVATE int sqlite3WalSavepointUndo(Wal *pWal, u32 *aWalData);
/* Write a frame or frames to the log. */
SQLITE_PRIVATE int sqlite3WalFrames(Wal *pWal, int, PgHdr *, Pgno, int, int);
-/* Copy pages from the log to the database file */
+/* Copy pages from the log to the database file */
SQLITE_PRIVATE int sqlite3WalCheckpoint(
Wal *pWal, /* Write-ahead log connection */
sqlite3 *db, /* Check this handle's interrupt flag */
@@ -56081,7 +51697,7 @@ SQLITE_PRIVATE int sqlite3WalExclusiveMode(Wal *pWal, int op);
/* Return true if the argument is non-NULL and the WAL module is using
** heap-memory for the wal-index. Otherwise, if the argument is NULL or the
-** WAL module is using shared-memory, return false.
+** WAL module is using shared-memory, return false.
*/
SQLITE_PRIVATE int sqlite3WalHeapMemory(Wal *pWal);
@@ -56103,6 +51719,11 @@ SQLITE_PRIVATE int sqlite3WalFramesize(Wal *pWal);
/* Return the sqlite3_file object for the WAL file */
SQLITE_PRIVATE sqlite3_file *sqlite3WalFile(Wal *pWal);
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+SQLITE_PRIVATE int sqlite3WalWriteLock(Wal *pWal, int bLock);
+SQLITE_PRIVATE void sqlite3WalDb(Wal *pWal, sqlite3 *db);
+#endif
+
#endif /* ifndef SQLITE_OMIT_WAL */
#endif /* SQLITE_WAL_H */
@@ -56123,60 +51744,60 @@ SQLITE_PRIVATE sqlite3_file *sqlite3WalFile(Wal *pWal);
**
** Definition: A page of the database file is said to be "overwriteable" if
** one or more of the following are true about the page:
-**
+**
** (a) The original content of the page as it was at the beginning of
** the transaction has been written into the rollback journal and
** synced.
-**
+**
** (b) The page was a freelist leaf page at the start of the transaction.
-**
+**
** (c) The page number is greater than the largest page that existed in
** the database file at the start of the transaction.
-**
+**
** (1) A page of the database file is never overwritten unless one of the
** following are true:
-**
+**
** (a) The page and all other pages on the same sector are overwriteable.
-**
+**
** (b) The atomic page write optimization is enabled, and the entire
** transaction other than the update of the transaction sequence
** number consists of a single page change.
-**
+**
** (2) The content of a page written into the rollback journal exactly matches
** both the content in the database when the rollback journal was written
** and the content in the database at the beginning of the current
** transaction.
-**
+**
** (3) Writes to the database file are an integer multiple of the page size
** in length and are aligned on a page boundary.
-**
+**
** (4) Reads from the database file are either aligned on a page boundary and
** an integer multiple of the page size in length or are taken from the
** first 100 bytes of the database file.
-**
+**
** (5) All writes to the database file are synced prior to the rollback journal
** being deleted, truncated, or zeroed.
-**
-** (6) If a master journal file is used, then all writes to the database file
-** are synced prior to the master journal being deleted.
-**
+**
+** (6) If a super-journal file is used, then all writes to the database file
+** are synced prior to the super-journal being deleted.
+**
** Definition: Two databases (or the same database at two points it time)
** are said to be "logically equivalent" if they give the same answer to
** all queries. Note in particular the content of freelist leaf
** pages can be changed arbitrarily without affecting the logical equivalence
** of the database.
-**
+**
** (7) At any time, if any subset, including the empty set and the total set,
-** of the unsynced changes to a rollback journal are removed and the
+** of the unsynced changes to a rollback journal are removed and the
** journal is rolled back, the resulting database file will be logically
** equivalent to the database file at the beginning of the transaction.
-**
+**
** (8) When a transaction is rolled back, the xTruncate method of the VFS
** is called to restore the database file to the same size it was at
** the beginning of the transaction. (In some VFSes, the xTruncate
** method is a no-op, but that does not change the fact the SQLite will
** invoke it.)
-**
+**
** (9) Whenever the database file is modified, at least one bit in the range
** of bytes from 24 through 39 inclusive will be changed prior to releasing
** the EXCLUSIVE lock, thus signaling other connections on the same
@@ -56209,7 +51830,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
/*
** The following two macros are used within the PAGERTRACE() macros above
-** to print out file-descriptors.
+** to print out file-descriptors.
**
** PAGERID() takes a pointer to a Pager struct as its argument. The
** associated file-descriptor is returned. FILEHANDLEID() takes an sqlite3_file
@@ -56230,7 +51851,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
** | | |
** | V |
** |<-------WRITER_LOCKED------> ERROR
-** | | ^
+** | | ^
** | V |
** |<------WRITER_CACHEMOD-------->|
** | | |
@@ -56242,7 +51863,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
**
**
** List of state transitions and the C [function] that performs each:
-**
+**
** OPEN -> READER [sqlite3PagerSharedLock]
** READER -> OPEN [pager_unlock]
**
@@ -56254,7 +51875,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
**
** WRITER_*** -> ERROR [pager_error]
** ERROR -> OPEN [pager_unlock]
-**
+**
**
** OPEN:
**
@@ -56268,9 +51889,9 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
**
** READER:
**
-** In this state all the requirements for reading the database in
+** In this state all the requirements for reading the database in
** rollback (non-WAL) mode are met. Unless the pager is (or recently
-** was) in exclusive-locking mode, a user-level read transaction is
+** was) in exclusive-locking mode, a user-level read transaction is
** open. The database size is known in this state.
**
** A connection running with locking_mode=normal enters this state when
@@ -56280,28 +51901,28 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
** this state even after the read-transaction is closed. The only way
** a locking_mode=exclusive connection can transition from READER to OPEN
** is via the ERROR state (see below).
-**
+**
** * A read transaction may be active (but a write-transaction cannot).
** * A SHARED or greater lock is held on the database file.
-** * The dbSize variable may be trusted (even if a user-level read
+** * The dbSize variable may be trusted (even if a user-level read
** transaction is not active). The dbOrigSize and dbFileSize variables
** may not be trusted at this point.
** * If the database is a WAL database, then the WAL connection is open.
-** * Even if a read-transaction is not open, it is guaranteed that
+** * Even if a read-transaction is not open, it is guaranteed that
** there is no hot-journal in the file-system.
**
** WRITER_LOCKED:
**
** The pager moves to this state from READER when a write-transaction
-** is first opened on the database. In WRITER_LOCKED state, all locks
-** required to start a write-transaction are held, but no actual
+** is first opened on the database. In WRITER_LOCKED state, all locks
+** required to start a write-transaction are held, but no actual
** modifications to the cache or database have taken place.
**
-** In rollback mode, a RESERVED or (if the transaction was opened with
+** In rollback mode, a RESERVED or (if the transaction was opened with
** BEGIN EXCLUSIVE) EXCLUSIVE lock is obtained on the database file when
-** moving to this state, but the journal file is not written to or opened
-** to in this state. If the transaction is committed or rolled back while
-** in WRITER_LOCKED state, all that is required is to unlock the database
+** moving to this state, but the journal file is not written to or opened
+** to in this state. If the transaction is committed or rolled back while
+** in WRITER_LOCKED state, all that is required is to unlock the database
** file.
**
** IN WAL mode, WalBeginWriteTransaction() is called to lock the log file.
@@ -56309,7 +51930,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
** is made to obtain an EXCLUSIVE lock on the database file.
**
** * A write transaction is active.
-** * If the connection is open in rollback-mode, a RESERVED or greater
+** * If the connection is open in rollback-mode, a RESERVED or greater
** lock is held on the database file.
** * If the connection is open in WAL-mode, a WAL write transaction
** is open (i.e. sqlite3WalBeginWriteTransaction() has been successfully
@@ -56328,7 +51949,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
**
** * A write transaction is active.
** * A RESERVED or greater lock is held on the database file.
-** * The journal file is open and the first header has been written
+** * The journal file is open and the first header has been written
** to it, but the header has not been synced to disk.
** * The contents of the page cache have been modified.
**
@@ -56341,7 +51962,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
**
** * A write transaction is active.
** * An EXCLUSIVE or greater lock is held on the database file.
-** * The journal file is open and the first header has been written
+** * The journal file is open and the first header has been written
** and synced to disk.
** * The contents of the page cache have been modified (and possibly
** written to disk).
@@ -56353,8 +51974,8 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
** A rollback-mode pager changes to WRITER_FINISHED state from WRITER_DBMOD
** state after the entire transaction has been successfully written into the
** database file. In this state the transaction may be committed simply
-** by finalizing the journal file. Once in WRITER_FINISHED state, it is
-** not possible to modify the database further. At this point, the upper
+** by finalizing the journal file. Once in WRITER_FINISHED state, it is
+** not possible to modify the database further. At this point, the upper
** layer must either commit or rollback the transaction.
**
** * A write transaction is active.
@@ -56362,19 +51983,19 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
** * All writing and syncing of journal and database data has finished.
** If no error occurred, all that remains is to finalize the journal to
** commit the transaction. If an error did occur, the caller will need
-** to rollback the transaction.
+** to rollback the transaction.
**
** ERROR:
**
** The ERROR state is entered when an IO or disk-full error (including
-** SQLITE_IOERR_NOMEM) occurs at a point in the code that makes it
-** difficult to be sure that the in-memory pager state (cache contents,
+** SQLITE_IOERR_NOMEM) occurs at a point in the code that makes it
+** difficult to be sure that the in-memory pager state (cache contents,
** db size etc.) are consistent with the contents of the file-system.
**
** Temporary pager files may enter the ERROR state, but in-memory pagers
** cannot.
**
-** For example, if an IO error occurs while performing a rollback,
+** For example, if an IO error occurs while performing a rollback,
** the contents of the page-cache may be left in an inconsistent state.
** At this point it would be dangerous to change back to READER state
** (as usually happens after a rollback). Any subsequent readers might
@@ -56384,13 +52005,13 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
** instead of READER following such an error.
**
** Once it has entered the ERROR state, any attempt to use the pager
-** to read or write data returns an error. Eventually, once all
+** to read or write data returns an error. Eventually, once all
** outstanding transactions have been abandoned, the pager is able to
-** transition back to OPEN state, discarding the contents of the
+** transition back to OPEN state, discarding the contents of the
** page-cache and any other in-memory state at the same time. Everything
** is reloaded from disk (and, if necessary, hot-journal rollback peformed)
** when a read-transaction is next opened on the pager (transitioning
-** the pager into READER state). At that point the system has recovered
+** the pager into READER state). At that point the system has recovered
** from the error.
**
** Specifically, the pager jumps into the ERROR state if:
@@ -56406,21 +52027,21 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
** memory.
**
** In other cases, the error is returned to the b-tree layer. The b-tree
-** layer then attempts a rollback operation. If the error condition
+** layer then attempts a rollback operation. If the error condition
** persists, the pager enters the ERROR state via condition (1) above.
**
** Condition (3) is necessary because it can be triggered by a read-only
** statement executed within a transaction. In this case, if the error
** code were simply returned to the user, the b-tree layer would not
** automatically attempt a rollback, as it assumes that an error in a
-** read-only statement cannot leave the pager in an internally inconsistent
+** read-only statement cannot leave the pager in an internally inconsistent
** state.
**
** * The Pager.errCode variable is set to something other than SQLITE_OK.
** * There are one or more outstanding references to pages (after the
** last reference is dropped the pager should move back to OPEN state).
** * The pager is not an in-memory pager.
-**
+**
**
** Notes:
**
@@ -56430,7 +52051,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
**
** * Normally, a connection open in exclusive mode is never in PAGER_OPEN
** state. There are two exceptions: immediately after exclusive-mode has
-** been turned on (and before any read or write transactions are
+** been turned on (and before any read or write transactions are
** executed), and when the pager is leaving the "error state".
**
** * See also: assert_pager_state().
@@ -56444,7 +52065,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
#define PAGER_ERROR 6
/*
-** The Pager.eLock variable is almost always set to one of the
+** The Pager.eLock variable is almost always set to one of the
** following locking-states, according to the lock currently held on
** the database file: NO_LOCK, SHARED_LOCK, RESERVED_LOCK or EXCLUSIVE_LOCK.
** This variable is kept up to date as locks are taken and released by
@@ -56459,20 +52080,20 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
** to a less exclusive (lower) value than the lock that is actually held
** at the system level, but it is never set to a more exclusive value.
**
-** This is usually safe. If an xUnlock fails or appears to fail, there may
+** This is usually safe. If an xUnlock fails or appears to fail, there may
** be a few redundant xLock() calls or a lock may be held for longer than
** required, but nothing really goes wrong.
**
** The exception is when the database file is unlocked as the pager moves
-** from ERROR to OPEN state. At this point there may be a hot-journal file
+** from ERROR to OPEN state. At this point there may be a hot-journal file
** in the file-system that needs to be rolled back (as part of an OPEN->SHARED
** transition, by the same pager or any other). If the call to xUnlock()
** fails at this point and the pager is left holding an EXCLUSIVE lock, this
** can confuse the call to xCheckReservedLock() call made later as part
** of hot-journal detection.
**
-** xCheckReservedLock() is defined as returning true "if there is a RESERVED
-** lock held by this process or any others". So xCheckReservedLock may
+** xCheckReservedLock() is defined as returning true "if there is a RESERVED
+** lock held by this process or any others". So xCheckReservedLock may
** return true because the caller itself is holding an EXCLUSIVE lock (but
** doesn't know it because of a previous error in xUnlock). If this happens
** a hot-journal may be mistaken for a journal being created by an active
@@ -56483,32 +52104,18 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
** database in the ERROR state, Pager.eLock is set to UNKNOWN_LOCK. It
** is only changed back to a real locking state after a successful call
** to xLock(EXCLUSIVE). Also, the code to do the OPEN->SHARED state transition
-** omits the check for a hot-journal if Pager.eLock is set to UNKNOWN_LOCK
+** omits the check for a hot-journal if Pager.eLock is set to UNKNOWN_LOCK
** lock. Instead, it assumes a hot-journal exists and obtains an EXCLUSIVE
** lock on the database file before attempting to roll it back. See function
** PagerSharedLock() for more detail.
**
-** Pager.eLock may only be set to UNKNOWN_LOCK when the pager is in
+** Pager.eLock may only be set to UNKNOWN_LOCK when the pager is in
** PAGER_OPEN state.
*/
#define UNKNOWN_LOCK (EXCLUSIVE_LOCK+1)
/*
-** A macro used for invoking the codec if there is one
-*/
-#ifdef SQLITE_HAS_CODEC
-# define CODEC1(P,D,N,X,E) \
- if( P->xCodec && P->xCodec(P->pCodec,D,N,X)==0 ){ E; }
-# define CODEC2(P,D,N,X,E,O) \
- if( P->xCodec==0 ){ O=(char*)D; }else \
- if( (O=(char*)(P->xCodec(P->pCodec,D,N,X)))==0 ){ E; }
-#else
-# define CODEC1(P,D,N,X,E) /* NO-OP */
-# define CODEC2(P,D,N,X,E,O) O=(char*)D
-#endif
-
-/*
-** The maximum allowed sector size. 64KiB. If the xSectorsize() method
+** The maximum allowed sector size. 64KiB. If the xSectorsize() method
** returns a value larger than this, then MAX_SECTOR_SIZE is used instead.
** This could conceivably cause corruption following a power failure on
** such a system. This is currently an undocumented limit.
@@ -56524,7 +52131,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */
**
** When a savepoint is created, the PagerSavepoint.iHdrOffset field is
** set to 0. If a journal-header is written into the main journal while
-** the savepoint is active, then iHdrOffset is set to the byte offset
+** the savepoint is active, then iHdrOffset is set to the byte offset
** immediately following the last journal record written into the main
** journal before the journal-header. This is required during savepoint
** rollback (see pagerPlaybackSavepoint()).
@@ -56574,44 +52181,44 @@ struct PagerSavepoint {
**
** changeCountDone
**
-** This boolean variable is used to make sure that the change-counter
-** (the 4-byte header field at byte offset 24 of the database file) is
-** not updated more often than necessary.
+** This boolean variable is used to make sure that the change-counter
+** (the 4-byte header field at byte offset 24 of the database file) is
+** not updated more often than necessary.
**
-** It is set to true when the change-counter field is updated, which
+** It is set to true when the change-counter field is updated, which
** can only happen if an exclusive lock is held on the database file.
-** It is cleared (set to false) whenever an exclusive lock is
+** It is cleared (set to false) whenever an exclusive lock is
** relinquished on the database file. Each time a transaction is committed,
** The changeCountDone flag is inspected. If it is true, the work of
** updating the change-counter is omitted for the current transaction.
**
-** This mechanism means that when running in exclusive mode, a connection
+** This mechanism means that when running in exclusive mode, a connection
** need only update the change-counter once, for the first transaction
** committed.
**
-** setMaster
+** setSuper
**
** When PagerCommitPhaseOne() is called to commit a transaction, it may
-** (or may not) specify a master-journal name to be written into the
+** (or may not) specify a super-journal name to be written into the
** journal file before it is synced to disk.
**
-** Whether or not a journal file contains a master-journal pointer affects
-** the way in which the journal file is finalized after the transaction is
+** Whether or not a journal file contains a super-journal pointer affects
+** the way in which the journal file is finalized after the transaction is
** committed or rolled back when running in "journal_mode=PERSIST" mode.
-** If a journal file does not contain a master-journal pointer, it is
+** If a journal file does not contain a super-journal pointer, it is
** finalized by overwriting the first journal header with zeroes. If
-** it does contain a master-journal pointer the journal file is finalized
-** by truncating it to zero bytes, just as if the connection were
+** it does contain a super-journal pointer the journal file is finalized
+** by truncating it to zero bytes, just as if the connection were
** running in "journal_mode=truncate" mode.
**
-** Journal files that contain master journal pointers cannot be finalized
+** Journal files that contain super-journal pointers cannot be finalized
** simply by overwriting the first journal-header with zeroes, as the
-** master journal pointer could interfere with hot-journal rollback of any
+** super-journal pointer could interfere with hot-journal rollback of any
** subsequently interrupted transaction that reuses the journal file.
**
** The flag is cleared as soon as the journal file is finalized (either
** by PagerCommitPhaseTwo or PagerRollback). If an IO error prevents the
-** journal file from being successfully finalized, the setMaster flag
+** journal file from being successfully finalized, the setSuper flag
** is cleared anyway (and the pager will move to ERROR state).
**
** doNotSpill
@@ -56627,12 +52234,12 @@ struct PagerSavepoint {
** to allocate a new page to prevent the journal file from being written
** while it is being traversed by code in pager_playback(). The SPILLFLAG_OFF
** case is a user preference.
-**
+**
** If the SPILLFLAG_NOSYNC bit is set, writing to the database from
** pagerStress() is permitted, but syncing the journal file is not.
** This flag is set by sqlite3PagerWrite() when the file-system sector-size
** is larger than the database page-size in order to prevent a journal sync
-** from happening in between the journalling of two pages on the same sector.
+** from happening in between the journalling of two pages on the same sector.
**
** subjInMemory
**
@@ -56640,16 +52247,16 @@ struct PagerSavepoint {
** is opened as an in-memory journal file. If false, then in-memory
** sub-journals are only used for in-memory pager files.
**
-** This variable is updated by the upper layer each time a new
+** This variable is updated by the upper layer each time a new
** write-transaction is opened.
**
** dbSize, dbOrigSize, dbFileSize
**
** Variable dbSize is set to the number of pages in the database file.
** It is valid in PAGER_READER and higher states (all states except for
-** OPEN and ERROR).
+** OPEN and ERROR).
**
-** dbSize is set based on the size of the database file, which may be
+** dbSize is set based on the size of the database file, which may be
** larger than the size of the database (the value stored at offset
** 28 of the database header by the btree). If the size of the file
** is not an integer multiple of the page-size, the value stored in
@@ -56660,10 +52267,10 @@ struct PagerSavepoint {
**
** During a write-transaction, if pages with page-numbers greater than
** dbSize are modified in the cache, dbSize is updated accordingly.
-** Similarly, if the database is truncated using PagerTruncateImage(),
+** Similarly, if the database is truncated using PagerTruncateImage(),
** dbSize is updated.
**
-** Variables dbOrigSize and dbFileSize are valid in states
+** Variables dbOrigSize and dbFileSize are valid in states
** PAGER_WRITER_LOCKED and higher. dbOrigSize is a copy of the dbSize
** variable at the start of the transaction. It is used during rollback,
** and to determine whether or not pages need to be journalled before
@@ -56672,12 +52279,12 @@ struct PagerSavepoint {
** Throughout a write-transaction, dbFileSize contains the size of
** the file on disk in pages. It is set to a copy of dbSize when the
** write-transaction is first opened, and updated when VFS calls are made
-** to write or truncate the database file on disk.
+** to write or truncate the database file on disk.
**
-** The only reason the dbFileSize variable is required is to suppress
-** unnecessary calls to xTruncate() after committing a transaction. If,
-** when a transaction is committed, the dbFileSize variable indicates
-** that the database file is larger than the database image (Pager.dbSize),
+** The only reason the dbFileSize variable is required is to suppress
+** unnecessary calls to xTruncate() after committing a transaction. If,
+** when a transaction is committed, the dbFileSize variable indicates
+** that the database file is larger than the database image (Pager.dbSize),
** pager_truncate() is called. The pager_truncate() call uses xFilesize()
** to measure the database file on disk, and then truncates it if required.
** dbFileSize is not used when rolling back a transaction. In this case
@@ -56688,20 +52295,20 @@ struct PagerSavepoint {
** dbHintSize
**
** The dbHintSize variable is used to limit the number of calls made to
-** the VFS xFileControl(FCNTL_SIZE_HINT) method.
+** the VFS xFileControl(FCNTL_SIZE_HINT) method.
**
** dbHintSize is set to a copy of the dbSize variable when a
** write-transaction is opened (at the same time as dbFileSize and
** dbOrigSize). If the xFileControl(FCNTL_SIZE_HINT) method is called,
** dbHintSize is increased to the number of pages that correspond to the
-** size-hint passed to the method call. See pager_write_pagelist() for
+** size-hint passed to the method call. See pager_write_pagelist() for
** details.
**
** errCode
**
** The Pager.errCode variable is only ever used in PAGER_ERROR state. It
-** is set to zero in all other states. In PAGER_ERROR state, Pager.errCode
-** is always set to SQLITE_FULL, SQLITE_IOERR or one of the SQLITE_IOERR_XXX
+** is set to zero in all other states. In PAGER_ERROR state, Pager.errCode
+** is always set to SQLITE_FULL, SQLITE_IOERR or one of the SQLITE_IOERR_XXX
** sub-codes.
**
** syncFlags, walSyncFlags
@@ -56743,7 +52350,7 @@ struct Pager {
u8 eState; /* Pager state (OPEN, READER, WRITER_LOCKED..) */
u8 eLock; /* Current lock held on database file */
u8 changeCountDone; /* Set after incrementing the change-counter */
- u8 setMaster; /* True if a m-j name has been written to jrnl */
+ u8 setSuper; /* Super-jrnl name is written into jrnl */
u8 doNotSpill; /* Do not spill the cache when non-zero */
u8 subjInMemory; /* True to use in-memory sub-journals */
u8 bUseFetch; /* True to use xFetch() */
@@ -56792,12 +52399,6 @@ struct Pager {
#endif
void (*xReiniter)(DbPage*); /* Call this routine when reloading pages */
int (*xGet)(Pager*,Pgno,DbPage**,int); /* Routine to fetch a patch */
-#ifdef SQLITE_HAS_CODEC
- void *(*xCodec)(void*,void*,Pgno,int); /* Routine for en/decoding data */
- void (*xCodecSizeChng)(void*,int,int); /* Notify of page size changes */
- void (*xCodecFree)(void*); /* Destructor for the codec */
- void *pCodec; /* First argument to xCodec... methods */
-#endif
char *pTmpSpace; /* Pager.pageSize bytes of space for tmp use */
PCache *pPCache; /* Pointer to page cache object */
#ifndef SQLITE_OMIT_WAL
@@ -56808,7 +52409,7 @@ struct Pager {
/*
** Indexes for use with Pager.aStat[]. The Pager.aStat[] array contains
-** the values accessed by passing SQLITE_DBSTATUS_CACHE_HIT, CACHE_MISS
+** the values accessed by passing SQLITE_DBSTATUS_CACHE_HIT, CACHE_MISS
** or CACHE_WRITE to sqlite3_db_status().
*/
#define PAGER_STAT_HIT 0
@@ -56866,7 +52467,7 @@ static const unsigned char aJournalMagic[] = {
#define JOURNAL_PG_SZ(pPager) ((pPager->pageSize) + 8)
/*
-** The journal header size for this pager. This is usually the same
+** The journal header size for this pager. This is usually the same
** size as a single disk sector. See also setSectorSize().
*/
#define JOURNAL_HDR_SZ(pPager) (pPager->sectorSize)
@@ -56893,11 +52494,6 @@ static const unsigned char aJournalMagic[] = {
# define USEFETCH(x) 0
#endif
-/*
-** The maximum legal page number is (2^31 - 1).
-*/
-#define PAGER_MAX_PGNO 2147483647
-
/*
** The argument to this macro is a file descriptor (type sqlite3_file*).
** Return 0 if it is not open, or non-zero (but not 1) if it is.
@@ -56924,9 +52520,6 @@ static const unsigned char aJournalMagic[] = {
SQLITE_PRIVATE int sqlite3PagerDirectReadOk(Pager *pPager, Pgno pgno){
if( pPager->fd->pMethods==0 ) return 0;
if( sqlite3PCacheIsDirty(pPager->pPCache) ) return 0;
-#ifdef SQLITE_HAS_CODEC
- if( pPager->xCodec!=0 ) return 0;
-#endif
#ifndef SQLITE_OMIT_WAL
if( pPager->pWal ){
u32 iRead = 0;
@@ -56949,7 +52542,7 @@ SQLITE_PRIVATE int sqlite3PagerDirectReadOk(Pager *pPager, Pgno pgno){
# define pagerBeginReadTransaction(z) SQLITE_OK
#endif
-#ifndef NDEBUG
+#ifndef NDEBUG
/*
** Usage:
**
@@ -56978,25 +52571,25 @@ static int assert_pager_state(Pager *p){
assert( p->tempFile==0 || p->eLock==EXCLUSIVE_LOCK );
assert( p->tempFile==0 || pPager->changeCountDone );
- /* If the useJournal flag is clear, the journal-mode must be "OFF".
+ /* If the useJournal flag is clear, the journal-mode must be "OFF".
** And if the journal-mode is "OFF", the journal file must not be open.
*/
assert( p->journalMode==PAGER_JOURNALMODE_OFF || p->useJournal );
assert( p->journalMode!=PAGER_JOURNALMODE_OFF || !isOpen(p->jfd) );
- /* Check that MEMDB implies noSync. And an in-memory journal. Since
- ** this means an in-memory pager performs no IO at all, it cannot encounter
- ** either SQLITE_IOERR or SQLITE_FULL during rollback or while finalizing
- ** a journal file. (although the in-memory journal implementation may
- ** return SQLITE_IOERR_NOMEM while the journal file is being written). It
- ** is therefore not possible for an in-memory pager to enter the ERROR
+ /* Check that MEMDB implies noSync. And an in-memory journal. Since
+ ** this means an in-memory pager performs no IO at all, it cannot encounter
+ ** either SQLITE_IOERR or SQLITE_FULL during rollback or while finalizing
+ ** a journal file. (although the in-memory journal implementation may
+ ** return SQLITE_IOERR_NOMEM while the journal file is being written). It
+ ** is therefore not possible for an in-memory pager to enter the ERROR
** state.
*/
if( MEMDB ){
assert( !isOpen(p->fd) );
assert( p->noSync );
- assert( p->journalMode==PAGER_JOURNALMODE_OFF
- || p->journalMode==PAGER_JOURNALMODE_MEMORY
+ assert( p->journalMode==PAGER_JOURNALMODE_OFF
+ || p->journalMode==PAGER_JOURNALMODE_MEMORY
);
assert( p->eState!=PAGER_ERROR && p->eState!=PAGER_OPEN );
assert( pagerUseWal(p)==0 );
@@ -57030,7 +52623,7 @@ static int assert_pager_state(Pager *p){
assert( pPager->dbSize==pPager->dbOrigSize );
assert( pPager->dbOrigSize==pPager->dbFileSize );
assert( pPager->dbOrigSize==pPager->dbHintSize );
- assert( pPager->setMaster==0 );
+ assert( pPager->setSuper==0 );
break;
case PAGER_WRITER_CACHEMOD:
@@ -57043,9 +52636,9 @@ static int assert_pager_state(Pager *p){
** to journal_mode=wal.
*/
assert( p->eLock>=RESERVED_LOCK );
- assert( isOpen(p->jfd)
- || p->journalMode==PAGER_JOURNALMODE_OFF
- || p->journalMode==PAGER_JOURNALMODE_WAL
+ assert( isOpen(p->jfd)
+ || p->journalMode==PAGER_JOURNALMODE_OFF
+ || p->journalMode==PAGER_JOURNALMODE_WAL
);
}
assert( pPager->dbOrigSize==pPager->dbFileSize );
@@ -57057,9 +52650,9 @@ static int assert_pager_state(Pager *p){
assert( pPager->errCode==SQLITE_OK );
assert( !pagerUseWal(pPager) );
assert( p->eLock>=EXCLUSIVE_LOCK );
- assert( isOpen(p->jfd)
- || p->journalMode==PAGER_JOURNALMODE_OFF
- || p->journalMode==PAGER_JOURNALMODE_WAL
+ assert( isOpen(p->jfd)
+ || p->journalMode==PAGER_JOURNALMODE_OFF
+ || p->journalMode==PAGER_JOURNALMODE_WAL
|| (sqlite3OsDeviceCharacteristics(p->fd)&SQLITE_IOCAP_BATCH_ATOMIC)
);
assert( pPager->dbOrigSize<=pPager->dbHintSize );
@@ -57069,9 +52662,9 @@ static int assert_pager_state(Pager *p){
assert( p->eLock==EXCLUSIVE_LOCK );
assert( pPager->errCode==SQLITE_OK );
assert( !pagerUseWal(pPager) );
- assert( isOpen(p->jfd)
- || p->journalMode==PAGER_JOURNALMODE_OFF
- || p->journalMode==PAGER_JOURNALMODE_WAL
+ assert( isOpen(p->jfd)
+ || p->journalMode==PAGER_JOURNALMODE_OFF
+ || p->journalMode==PAGER_JOURNALMODE_WAL
|| (sqlite3OsDeviceCharacteristics(p->fd)&SQLITE_IOCAP_BATCH_ATOMIC)
);
break;
@@ -57090,7 +52683,7 @@ static int assert_pager_state(Pager *p){
}
#endif /* ifndef NDEBUG */
-#ifdef SQLITE_DEBUG
+#ifdef SQLITE_DEBUG
/*
** Return a pointer to a human readable string in a static buffer
** containing the state of the Pager object passed as an argument. This
@@ -57160,11 +52753,7 @@ static void setGetterMethod(Pager *pPager){
if( pPager->errCode ){
pPager->xGet = getPageError;
#if SQLITE_MAX_MMAP_SIZE>0
- }else if( USEFETCH(pPager)
-#ifdef SQLITE_HAS_CODEC
- && pPager->xCodec==0
-#endif
- ){
+ }else if( USEFETCH(pPager) ){
pPager->xGet = getPageMMap;
#endif /* SQLITE_MAX_MMAP_SIZE>0 */
}else{
@@ -57242,7 +52831,7 @@ static int write32bits(sqlite3_file *fd, i64 offset, u32 val){
** succeeds, set the Pager.eLock variable to match the (attempted) new lock.
**
** Except, if Pager.eLock is set to UNKNOWN_LOCK when this function is
-** called, do not modify it. See the comment above the #define of
+** called, do not modify it. See the comment above the #define of
** UNKNOWN_LOCK for an explanation of this.
*/
static int pagerUnlockDb(Pager *pPager, int eLock){
@@ -57259,17 +52848,18 @@ static int pagerUnlockDb(Pager *pPager, int eLock){
}
IOTRACE(("UNLOCK %p %d\n", pPager, eLock))
}
+ pPager->changeCountDone = pPager->tempFile; /* ticket fb3b3024ea238d5c */
return rc;
}
/*
** Lock the database file to level eLock, which must be either SHARED_LOCK,
** RESERVED_LOCK or EXCLUSIVE_LOCK. If the caller is successful, set the
-** Pager.eLock variable to the new locking state.
+** Pager.eLock variable to the new locking state.
**
-** Except, if Pager.eLock is set to UNKNOWN_LOCK when this function is
-** called, do not modify it unless the new locking state is EXCLUSIVE_LOCK.
-** See the comment above the #define of UNKNOWN_LOCK for an explanation
+** Except, if Pager.eLock is set to UNKNOWN_LOCK when this function is
+** called, do not modify it unless the new locking state is EXCLUSIVE_LOCK.
+** See the comment above the #define of UNKNOWN_LOCK for an explanation
** of this.
*/
static int pagerLockDb(Pager *pPager, int eLock){
@@ -57296,7 +52886,7 @@ static int pagerLockDb(Pager *pPager, int eLock){
** (b) the value returned by OsSectorSize() is less than or equal
** to the page size.
**
-** If it can be used, then the value returned is the size of the journal
+** If it can be used, then the value returned is the size of the journal
** file when it contains rollback data for exactly one page.
**
** The atomic-batch-write optimization can be used if OsDeviceCharacteristics()
@@ -57387,73 +52977,73 @@ static void checkPage(PgHdr *pPg){
/*
** When this is called the journal file for pager pPager must be open.
-** This function attempts to read a master journal file name from the
-** end of the file and, if successful, copies it into memory supplied
-** by the caller. See comments above writeMasterJournal() for the format
-** used to store a master journal file name at the end of a journal file.
+** This function attempts to read a super-journal file name from the
+** end of the file and, if successful, copies it into memory supplied
+** by the caller. See comments above writeSuperJournal() for the format
+** used to store a super-journal file name at the end of a journal file.
**
-** zMaster must point to a buffer of at least nMaster bytes allocated by
+** zSuper must point to a buffer of at least nSuper bytes allocated by
** the caller. This should be sqlite3_vfs.mxPathname+1 (to ensure there is
-** enough space to write the master journal name). If the master journal
-** name in the journal is longer than nMaster bytes (including a
-** nul-terminator), then this is handled as if no master journal name
+** enough space to write the super-journal name). If the super-journal
+** name in the journal is longer than nSuper bytes (including a
+** nul-terminator), then this is handled as if no super-journal name
** were present in the journal.
**
-** If a master journal file name is present at the end of the journal
-** file, then it is copied into the buffer pointed to by zMaster. A
-** nul-terminator byte is appended to the buffer following the master
-** journal file name.
+** If a super-journal file name is present at the end of the journal
+** file, then it is copied into the buffer pointed to by zSuper. A
+** nul-terminator byte is appended to the buffer following the
+** super-journal file name.
**
-** If it is determined that no master journal file name is present
-** zMaster[0] is set to 0 and SQLITE_OK returned.
+** If it is determined that no super-journal file name is present
+** zSuper[0] is set to 0 and SQLITE_OK returned.
**
** If an error occurs while reading from the journal file, an SQLite
** error code is returned.
*/
-static int readMasterJournal(sqlite3_file *pJrnl, char *zMaster, u32 nMaster){
+static int readSuperJournal(sqlite3_file *pJrnl, char *zSuper, u32 nSuper){
int rc; /* Return code */
- u32 len; /* Length in bytes of master journal name */
+ u32 len; /* Length in bytes of super-journal name */
i64 szJ; /* Total size in bytes of journal file pJrnl */
u32 cksum; /* MJ checksum value read from journal */
u32 u; /* Unsigned loop counter */
unsigned char aMagic[8]; /* A buffer to hold the magic header */
- zMaster[0] = '\0';
+ zSuper[0] = '\0';
if( SQLITE_OK!=(rc = sqlite3OsFileSize(pJrnl, &szJ))
|| szJ<16
|| SQLITE_OK!=(rc = read32bits(pJrnl, szJ-16, &len))
- || len>=nMaster
+ || len>=nSuper
|| len>szJ-16
- || len==0
+ || len==0
|| SQLITE_OK!=(rc = read32bits(pJrnl, szJ-12, &cksum))
|| SQLITE_OK!=(rc = sqlite3OsRead(pJrnl, aMagic, 8, szJ-8))
|| memcmp(aMagic, aJournalMagic, 8)
- || SQLITE_OK!=(rc = sqlite3OsRead(pJrnl, zMaster, len, szJ-16-len))
+ || SQLITE_OK!=(rc = sqlite3OsRead(pJrnl, zSuper, len, szJ-16-len))
){
return rc;
}
- /* See if the checksum matches the master journal name */
+ /* See if the checksum matches the super-journal name */
for(u=0; ujournalOff, assuming a sector
+** Return the offset of the sector boundary at or immediately
+** following the value in pPager->journalOff, assuming a sector
** size of pPager->sectorSize bytes.
**
** i.e for a sector size of 512:
@@ -57464,7 +53054,7 @@ static int readMasterJournal(sqlite3_file *pJrnl, char *zMaster, u32 nMaster){
** 512 512
** 100 512
** 2000 2048
-**
+**
*/
static i64 journalHdrOffset(Pager *pPager){
i64 offset = 0;
@@ -57486,12 +53076,12 @@ static i64 journalHdrOffset(Pager *pPager){
**
** If doTruncate is non-zero or the Pager.journalSizeLimit variable is
** set to 0, then truncate the journal file to zero bytes in size. Otherwise,
-** zero the 28-byte header at the start of the journal file. In either case,
-** if the pager is not in no-sync mode, sync the journal file immediately
+** zero the 28-byte header at the start of the journal file. In either case,
+** if the pager is not in no-sync mode, sync the journal file immediately
** after writing or truncating it.
**
** If Pager.journalSizeLimit is set to a positive, non-zero value, and
-** following the truncation or zeroing described above the size of the
+** following the truncation or zeroing described above the size of the
** journal file in bytes is larger than this value, then truncate the
** journal file to Pager.journalSizeLimit bytes. The journal file does
** not need to be synced following this operation.
@@ -57517,8 +53107,8 @@ static int zeroJournalHdr(Pager *pPager, int doTruncate){
rc = sqlite3OsSync(pPager->jfd, SQLITE_SYNC_DATAONLY|pPager->syncFlags);
}
- /* At this point the transaction is committed but the write lock
- ** is still held on the file. If there is a size limit configured for
+ /* At this point the transaction is committed but the write lock
+ ** is still held on the file. If there is a size limit configured for
** the persistent journal and the journal file currently consumes more
** space than that limit allows for, truncate it now. There is no need
** to sync the file following this operation.
@@ -57546,7 +53136,7 @@ static int zeroJournalHdr(Pager *pPager, int doTruncate){
** - 4 bytes: Initial database page count.
** - 4 bytes: Sector size used by the process that wrote this journal.
** - 4 bytes: Database page size.
-**
+**
** Followed by (JOURNAL_HDR_SZ - 28) bytes of unused space.
*/
static int writeJournalHdr(Pager *pPager){
@@ -57562,8 +53152,8 @@ static int writeJournalHdr(Pager *pPager){
nHeader = JOURNAL_HDR_SZ(pPager);
}
- /* If there are active savepoints and any of them were created
- ** since the most recent journal header was written, update the
+ /* If there are active savepoints and any of them were created
+ ** since the most recent journal header was written, update the
** PagerSavepoint.iHdrOffset fields now.
*/
for(ii=0; iinSavepoint; ii++){
@@ -57574,10 +53164,10 @@ static int writeJournalHdr(Pager *pPager){
pPager->journalHdr = pPager->journalOff = journalHdrOffset(pPager);
- /*
+ /*
** Write the nRec Field - the number of page records that follow this
** journal header. Normally, zero is written to this value at this time.
- ** After the records are added to the journal (and the journal synced,
+ ** After the records are added to the journal (and the journal synced,
** if in full-sync mode), the zero is overwritten with the true number
** of records (see syncJournal()).
**
@@ -57596,7 +53186,7 @@ static int writeJournalHdr(Pager *pPager){
*/
assert( isOpen(pPager->fd) || pPager->noSync );
if( pPager->noSync || (pPager->journalMode==PAGER_JOURNALMODE_MEMORY)
- || (sqlite3OsDeviceCharacteristics(pPager->fd)&SQLITE_IOCAP_SAFE_APPEND)
+ || (sqlite3OsDeviceCharacteristics(pPager->fd)&SQLITE_IOCAP_SAFE_APPEND)
){
memcpy(zHeader, aJournalMagic, sizeof(aJournalMagic));
put32bits(&zHeader[sizeof(aJournalMagic)], 0xffffffff);
@@ -57604,7 +53194,7 @@ static int writeJournalHdr(Pager *pPager){
memset(zHeader, 0, sizeof(aJournalMagic)+4);
}
- /* The random check-hash initializer */
+ /* The random check-hash initializer */
sqlite3_randomness(sizeof(pPager->cksumInit), &pPager->cksumInit);
put32bits(&zHeader[sizeof(aJournalMagic)+4], pPager->cksumInit);
/* The initial database size */
@@ -57623,23 +53213,23 @@ static int writeJournalHdr(Pager *pPager){
memset(&zHeader[sizeof(aJournalMagic)+20], 0,
nHeader-(sizeof(aJournalMagic)+20));
- /* In theory, it is only necessary to write the 28 bytes that the
- ** journal header consumes to the journal file here. Then increment the
- ** Pager.journalOff variable by JOURNAL_HDR_SZ so that the next
+ /* In theory, it is only necessary to write the 28 bytes that the
+ ** journal header consumes to the journal file here. Then increment the
+ ** Pager.journalOff variable by JOURNAL_HDR_SZ so that the next
** record is written to the following sector (leaving a gap in the file
** that will be implicitly filled in by the OS).
**
- ** However it has been discovered that on some systems this pattern can
+ ** However it has been discovered that on some systems this pattern can
** be significantly slower than contiguously writing data to the file,
- ** even if that means explicitly writing data to the block of
+ ** even if that means explicitly writing data to the block of
** (JOURNAL_HDR_SZ - 28) bytes that will not be used. So that is what
- ** is done.
+ ** is done.
**
- ** The loop is required here in case the sector-size is larger than the
+ ** The loop is required here in case the sector-size is larger than the
** database page size. Since the zHeader buffer is only Pager.pageSize
** bytes in size, more than one call to sqlite3OsWrite() may be required
** to populate the entire journal header sector.
- */
+ */
for(nWrite=0; rc==SQLITE_OK&&nWritejournalHdr, nHeader))
rc = sqlite3OsWrite(pPager->jfd, zHeader, nHeader, pPager->journalOff);
@@ -57737,29 +53327,29 @@ static int readJournalHdr(
/* Check that the values read from the page-size and sector-size fields
** are within range. To be 'in range', both values need to be a power
- ** of two greater than or equal to 512 or 32, and not greater than their
+ ** of two greater than or equal to 512 or 32, and not greater than their
** respective compile time maximum limits.
*/
if( iPageSize<512 || iSectorSize<32
|| iPageSize>SQLITE_MAX_PAGE_SIZE || iSectorSize>MAX_SECTOR_SIZE
- || ((iPageSize-1)&iPageSize)!=0 || ((iSectorSize-1)&iSectorSize)!=0
+ || ((iPageSize-1)&iPageSize)!=0 || ((iSectorSize-1)&iSectorSize)!=0
){
- /* If the either the page-size or sector-size in the journal-header is
- ** invalid, then the process that wrote the journal-header must have
- ** crashed before the header was synced. In this case stop reading
+ /* If the either the page-size or sector-size in the journal-header is
+ ** invalid, then the process that wrote the journal-header must have
+ ** crashed before the header was synced. In this case stop reading
** the journal file here.
*/
return SQLITE_DONE;
}
- /* Update the page-size to match the value read from the journal.
- ** Use a testcase() macro to make sure that malloc failure within
+ /* Update the page-size to match the value read from the journal.
+ ** Use a testcase() macro to make sure that malloc failure within
** PagerSetPagesize() is tested.
*/
rc = sqlite3PagerSetPagesize(pPager, &iPageSize, -1);
testcase( rc!=SQLITE_OK );
- /* Update the assumed sector-size to match the value used by
+ /* Update the assumed sector-size to match the value used by
** the process that created this journal. If this journal was
** created by a process other than this one, then this routine
** is being called from within pager_playback(). The local value
@@ -57774,50 +53364,50 @@ static int readJournalHdr(
/*
-** Write the supplied master journal name into the journal file for pager
-** pPager at the current location. The master journal name must be the last
+** Write the supplied super-journal name into the journal file for pager
+** pPager at the current location. The super-journal name must be the last
** thing written to a journal file. If the pager is in full-sync mode, the
** journal file descriptor is advanced to the next sector boundary before
** anything is written. The format is:
**
** + 4 bytes: PAGER_MJ_PGNO.
-** + N bytes: Master journal filename in utf-8.
-** + 4 bytes: N (length of master journal name in bytes, no nul-terminator).
-** + 4 bytes: Master journal name checksum.
+** + N bytes: super-journal filename in utf-8.
+** + 4 bytes: N (length of super-journal name in bytes, no nul-terminator).
+** + 4 bytes: super-journal name checksum.
** + 8 bytes: aJournalMagic[].
**
-** The master journal page checksum is the sum of the bytes in the master
-** journal name, where each byte is interpreted as a signed 8-bit integer.
+** The super-journal page checksum is the sum of the bytes in thesuper-journal
+** name, where each byte is interpreted as a signed 8-bit integer.
**
-** If zMaster is a NULL pointer (occurs for a single database transaction),
+** If zSuper is a NULL pointer (occurs for a single database transaction),
** this call is a no-op.
*/
-static int writeMasterJournal(Pager *pPager, const char *zMaster){
+static int writeSuperJournal(Pager *pPager, const char *zSuper){
int rc; /* Return code */
- int nMaster; /* Length of string zMaster */
+ int nSuper; /* Length of string zSuper */
i64 iHdrOff; /* Offset of header in journal file */
i64 jrnlSize; /* Size of journal file on disk */
- u32 cksum = 0; /* Checksum of string zMaster */
+ u32 cksum = 0; /* Checksum of string zSuper */
- assert( pPager->setMaster==0 );
+ assert( pPager->setSuper==0 );
assert( !pagerUseWal(pPager) );
- if( !zMaster
- || pPager->journalMode==PAGER_JOURNALMODE_MEMORY
+ if( !zSuper
+ || pPager->journalMode==PAGER_JOURNALMODE_MEMORY
|| !isOpen(pPager->jfd)
){
return SQLITE_OK;
}
- pPager->setMaster = 1;
+ pPager->setSuper = 1;
assert( pPager->journalHdr <= pPager->journalOff );
- /* Calculate the length in bytes and the checksum of zMaster */
- for(nMaster=0; zMaster[nMaster]; nMaster++){
- cksum += zMaster[nMaster];
+ /* Calculate the length in bytes and the checksum of zSuper */
+ for(nSuper=0; zSuper[nSuper]; nSuper++){
+ cksum += zSuper[nSuper];
}
/* If in full-sync mode, advance to the next disk sector before writing
- ** the master journal name. This is in case the previous page written to
+ ** the super-journal name. This is in case the previous page written to
** the journal has already been synced.
*/
if( pPager->fullSync ){
@@ -57825,30 +53415,30 @@ static int writeMasterJournal(Pager *pPager, const char *zMaster){
}
iHdrOff = pPager->journalOff;
- /* Write the master journal data to the end of the journal file. If
+ /* Write the super-journal data to the end of the journal file. If
** an error occurs, return the error code to the caller.
*/
if( (0 != (rc = write32bits(pPager->jfd, iHdrOff, PAGER_MJ_PGNO(pPager))))
- || (0 != (rc = sqlite3OsWrite(pPager->jfd, zMaster, nMaster, iHdrOff+4)))
- || (0 != (rc = write32bits(pPager->jfd, iHdrOff+4+nMaster, nMaster)))
- || (0 != (rc = write32bits(pPager->jfd, iHdrOff+4+nMaster+4, cksum)))
+ || (0 != (rc = sqlite3OsWrite(pPager->jfd, zSuper, nSuper, iHdrOff+4)))
+ || (0 != (rc = write32bits(pPager->jfd, iHdrOff+4+nSuper, nSuper)))
+ || (0 != (rc = write32bits(pPager->jfd, iHdrOff+4+nSuper+4, cksum)))
|| (0 != (rc = sqlite3OsWrite(pPager->jfd, aJournalMagic, 8,
- iHdrOff+4+nMaster+8)))
+ iHdrOff+4+nSuper+8)))
){
return rc;
}
- pPager->journalOff += (nMaster+20);
+ pPager->journalOff += (nSuper+20);
- /* If the pager is in peristent-journal mode, then the physical
- ** journal-file may extend past the end of the master-journal name
- ** and 8 bytes of magic data just written to the file. This is
+ /* If the pager is in peristent-journal mode, then the physical
+ ** journal-file may extend past the end of the super-journal name
+ ** and 8 bytes of magic data just written to the file. This is
** dangerous because the code to rollback a hot-journal file
- ** will not be able to find the master-journal name to determine
- ** whether or not the journal is hot.
+ ** will not be able to find the super-journal name to determine
+ ** whether or not the journal is hot.
**
- ** Easiest thing to do in this scenario is to truncate the journal
+ ** Easiest thing to do in this scenario is to truncate the journal
** file to the required size.
- */
+ */
if( SQLITE_OK==(rc = sqlite3OsFileSize(pPager->jfd, &jrnlSize))
&& jrnlSize>pPager->journalOff
){
@@ -57893,7 +53483,7 @@ static void releaseAllSavepoints(Pager *pPager){
}
/*
-** Set the bit number pgno in the PagerSavepoint.pInSavepoint
+** Set the bit number pgno in the PagerSavepoint.pInSavepoint
** bitvecs of all open savepoints. Return SQLITE_OK if successful
** or SQLITE_NOMEM if a malloc failure occurs.
*/
@@ -57922,8 +53512,8 @@ static int addToSavepointBitvecs(Pager *pPager, Pgno pgno){
** not exhibit the UNDELETABLE_WHEN_OPEN property, the journal file is
** closed (if it is open).
**
-** If the pager is in ERROR state when this function is called, the
-** contents of the pager cache are discarded before switching back to
+** If the pager is in ERROR state when this function is called, the
+** contents of the pager cache are discarded before switching back to
** the OPEN state. Regardless of whether the pager is in exclusive-mode
** or not, any journal file left in the file-system will be treated
** as a hot-journal and rolled back the next time a read-transaction
@@ -57931,9 +53521,9 @@ static int addToSavepointBitvecs(Pager *pPager, Pgno pgno){
*/
static void pager_unlock(Pager *pPager){
- assert( pPager->eState==PAGER_READER
- || pPager->eState==PAGER_OPEN
- || pPager->eState==PAGER_ERROR
+ assert( pPager->eState==PAGER_READER
+ || pPager->eState==PAGER_OPEN
+ || pPager->eState==PAGER_ERROR
);
sqlite3BitvecDestroy(pPager->pInJournal);
@@ -57980,7 +53570,6 @@ static void pager_unlock(Pager *pPager){
** code is cleared and the cache reset in the block below.
*/
assert( pPager->errCode || pPager->eState!=PAGER_ERROR );
- pPager->changeCountDone = 0;
pPager->eState = PAGER_OPEN;
}
@@ -58005,23 +53594,23 @@ static void pager_unlock(Pager *pPager){
pPager->journalOff = 0;
pPager->journalHdr = 0;
- pPager->setMaster = 0;
+ pPager->setSuper = 0;
}
/*
** This function is called whenever an IOERR or FULL error that requires
** the pager to transition into the ERROR state may ahve occurred.
-** The first argument is a pointer to the pager structure, the second
-** the error-code about to be returned by a pager API function. The
-** value returned is a copy of the second argument to this function.
+** The first argument is a pointer to the pager structure, the second
+** the error-code about to be returned by a pager API function. The
+** value returned is a copy of the second argument to this function.
**
** If the second argument is SQLITE_FULL, SQLITE_IOERR or one of the
** IOERR sub-codes, the pager enters the ERROR state and the error code
** is stored in Pager.errCode. While the pager remains in the ERROR state,
** all major API calls on the Pager will immediately return Pager.errCode.
**
-** The ERROR state indicates that the contents of the pager-cache
-** cannot be trusted. This state can be cleared by completely discarding
+** The ERROR state indicates that the contents of the pager-cache
+** cannot be trusted. This state can be cleared by completely discarding
** the contents of the pager-cache. If a transaction was active when
** the persistent error occurred, then the rollback journal may need
** to be replayed to restore the contents of the database file (as if
@@ -58069,27 +53658,27 @@ static int pagerFlushOnCommit(Pager *pPager, int bCommit){
}
/*
-** This routine ends a transaction. A transaction is usually ended by
-** either a COMMIT or a ROLLBACK operation. This routine may be called
+** This routine ends a transaction. A transaction is usually ended by
+** either a COMMIT or a ROLLBACK operation. This routine may be called
** after rollback of a hot-journal, or if an error occurs while opening
** the journal file or writing the very first journal-header of a
** database transaction.
-**
+**
** This routine is never called in PAGER_ERROR state. If it is called
** in PAGER_NONE or PAGER_SHARED state and the lock held is less
** exclusive than a RESERVED lock, it is a no-op.
**
** Otherwise, any active savepoints are released.
**
-** If the journal file is open, then it is "finalized". Once a journal
-** file has been finalized it is not possible to use it to roll back a
+** If the journal file is open, then it is "finalized". Once a journal
+** file has been finalized it is not possible to use it to roll back a
** transaction. Nor will it be considered to be a hot-journal by this
** or any other database connection. Exactly how a journal is finalized
** depends on whether or not the pager is running in exclusive mode and
** the current journal-mode (Pager.journalMode value), as follows:
**
** journalMode==MEMORY
-** Journal file descriptor is simply closed. This destroys an
+** Journal file descriptor is simply closed. This destroys an
** in-memory journal.
**
** journalMode==TRUNCATE
@@ -58109,19 +53698,19 @@ static int pagerFlushOnCommit(Pager *pPager, int bCommit){
** journalMode==PERSIST is used instead.
**
** After the journal is finalized, the pager moves to PAGER_READER state.
-** If running in non-exclusive rollback mode, the lock on the file is
+** If running in non-exclusive rollback mode, the lock on the file is
** downgraded to a SHARED_LOCK.
**
** SQLITE_OK is returned if no error occurs. If an error occurs during
** any of the IO operations to finalize the journal file or unlock the
-** database then the IO error code is returned to the user. If the
+** database then the IO error code is returned to the user. If the
** operation to finalize the journal file fails, then the code still
** tries to unlock the database file if not in exclusive mode. If the
** unlock operation fails as well, then the first error code related
** to the first error encountered (the journal finalization one) is
** returned.
*/
-static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){
+static int pager_end_transaction(Pager *pPager, int hasSuper, int bCommit){
int rc = SQLITE_OK; /* Error code from journal finalization operation */
int rc2 = SQLITE_OK; /* Error code from db file unlock operation */
@@ -58133,9 +53722,9 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){
** 1. After a successful hot-journal rollback, it is called with
** eState==PAGER_NONE and eLock==EXCLUSIVE_LOCK.
**
- ** 2. If a connection with locking_mode=exclusive holding an EXCLUSIVE
+ ** 2. If a connection with locking_mode=exclusive holding an EXCLUSIVE
** lock switches back to locking_mode=normal and then executes a
- ** read-transaction, this function is called with eState==PAGER_READER
+ ** read-transaction, this function is called with eState==PAGER_READER
** and eLock==EXCLUSIVE_LOCK when the read-transaction is closed.
*/
assert( assert_pager_state(pPager) );
@@ -58145,7 +53734,7 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){
}
releaseAllSavepoints(pPager);
- assert( isOpen(pPager->jfd) || pPager->pInJournal==0
+ assert( isOpen(pPager->jfd) || pPager->pInJournal==0
|| (sqlite3OsDeviceCharacteristics(pPager->fd)&SQLITE_IOCAP_BATCH_ATOMIC)
);
if( isOpen(pPager->jfd) ){
@@ -58173,7 +53762,7 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){
}else if( pPager->journalMode==PAGER_JOURNALMODE_PERSIST
|| (pPager->exclusiveMode && pPager->journalMode!=PAGER_JOURNALMODE_WAL)
){
- rc = zeroJournalHdr(pPager, hasMaster||pPager->tempFile);
+ rc = zeroJournalHdr(pPager, hasSuper||pPager->tempFile);
pPager->journalOff = 0;
}else{
/* This branch may be executed with Pager.journalMode==MEMORY if
@@ -58183,9 +53772,9 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){
*/
int bDelete = !pPager->tempFile;
assert( sqlite3JournalIsInMemory(pPager->jfd)==0 );
- assert( pPager->journalMode==PAGER_JOURNALMODE_DELETE
- || pPager->journalMode==PAGER_JOURNALMODE_MEMORY
- || pPager->journalMode==PAGER_JOURNALMODE_WAL
+ assert( pPager->journalMode==PAGER_JOURNALMODE_DELETE
+ || pPager->journalMode==PAGER_JOURNALMODE_MEMORY
+ || pPager->journalMode==PAGER_JOURNALMODE_WAL
);
sqlite3OsClose(pPager->jfd);
if( bDelete ){
@@ -58218,8 +53807,8 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){
}
if( pagerUseWal(pPager) ){
- /* Drop the WAL write-lock, if any. Also, if the connection was in
- ** locking_mode=exclusive mode but is no longer, drop the EXCLUSIVE
+ /* Drop the WAL write-lock, if any. Also, if the connection was in
+ ** locking_mode=exclusive mode but is no longer, drop the EXCLUSIVE
** lock held on the database file.
*/
rc2 = sqlite3WalEndWriteTransaction(pPager->pWal);
@@ -58227,7 +53816,7 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){
}else if( rc==SQLITE_OK && bCommit && pPager->dbFileSize>pPager->dbSize ){
/* This branch is taken when committing a transaction in rollback-journal
** mode if the database file on disk is larger than the database image.
- ** At this point the journal has been finalized and the transaction
+ ** At this point the journal has been finalized and the transaction
** successfully committed, but the EXCLUSIVE lock is still held on the
** file. So it is safe to truncate the database file to its minimum
** required size. */
@@ -58240,32 +53829,31 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){
if( rc==SQLITE_NOTFOUND ) rc = SQLITE_OK;
}
- if( !pPager->exclusiveMode
+ if( !pPager->exclusiveMode
&& (!pagerUseWal(pPager) || sqlite3WalExclusiveMode(pPager->pWal, 0))
){
rc2 = pagerUnlockDb(pPager, SHARED_LOCK);
- pPager->changeCountDone = 0;
}
pPager->eState = PAGER_READER;
- pPager->setMaster = 0;
+ pPager->setSuper = 0;
return (rc==SQLITE_OK?rc2:rc);
}
/*
-** Execute a rollback if a transaction is active and unlock the
-** database file.
+** Execute a rollback if a transaction is active and unlock the
+** database file.
**
-** If the pager has already entered the ERROR state, do not attempt
+** If the pager has already entered the ERROR state, do not attempt
** the rollback at this time. Instead, pager_unlock() is called. The
** call to pager_unlock() will discard all in-memory pages, unlock
-** the database file and move the pager back to OPEN state. If this
-** means that there is a hot-journal left in the file-system, the next
-** connection to obtain a shared lock on the pager (which may be this one)
+** the database file and move the pager back to OPEN state. If this
+** means that there is a hot-journal left in the file-system, the next
+** connection to obtain a shared lock on the pager (which may be this one)
** will roll it back.
**
** If the pager has not already entered the ERROR state, but an IO or
-** malloc error occurs during a rollback, then this will itself cause
+** malloc error occurs during a rollback, then this will itself cause
** the pager to enter the ERROR state. Which will be cleared by the
** call to pager_unlock(), as described above.
*/
@@ -58286,10 +53874,10 @@ static void pagerUnlockAndRollback(Pager *pPager){
/*
** Parameter aData must point to a buffer of pPager->pageSize bytes
-** of data. Compute and return a checksum based ont the contents of the
+** of data. Compute and return a checksum based ont the contents of the
** page of data and the current value of pPager->cksumInit.
**
-** This is not a real checksum. It is really just the sum of the
+** This is not a real checksum. It is really just the sum of the
** random initial value (pPager->cksumInit) and every 200th byte
** of the page data, starting with byte offset (pPager->pageSize%200).
** Each byte is interpreted as an 8-bit unsigned integer.
@@ -58297,8 +53885,8 @@ static void pagerUnlockAndRollback(Pager *pPager){
** Changing the formula used to compute this checksum results in an
** incompatible journal file format.
**
-** If journal corruption occurs due to a power failure, the most likely
-** scenario is that one end or the other of the record will be changed.
+** If journal corruption occurs due to a power failure, the most likely
+** scenario is that one end or the other of the record will be changed.
** It is much less likely that the two ends of the journal record will be
** correct and the middle be corrupt. Thus, this "checksum" scheme,
** though fast and simple, catches the mostly likely kind of corruption.
@@ -58313,42 +53901,13 @@ static u32 pager_cksum(Pager *pPager, const u8 *aData){
return cksum;
}
-/*
-** Report the current page size and number of reserved bytes back
-** to the codec.
-*/
-#ifdef SQLITE_HAS_CODEC
-static void pagerReportSize(Pager *pPager){
- if( pPager->xCodecSizeChng ){
- pPager->xCodecSizeChng(pPager->pCodec, pPager->pageSize,
- (int)pPager->nReserve);
- }
-}
-#else
-# define pagerReportSize(X) /* No-op if we do not support a codec */
-#endif
-
-#ifdef SQLITE_HAS_CODEC
-/*
-** Make sure the number of reserved bits is the same in the destination
-** pager as it is in the source. This comes up when a VACUUM changes the
-** number of reserved bits to the "optimal" amount.
-*/
-SQLITE_PRIVATE void sqlite3PagerAlignReserve(Pager *pDest, Pager *pSrc){
- if( pDest->nReserve!=pSrc->nReserve ){
- pDest->nReserve = pSrc->nReserve;
- pagerReportSize(pDest);
- }
-}
-#endif
-
/*
** Read a single page from either the journal file (if isMainJrnl==1) or
** from the sub-journal (if isMainJrnl==0) and playback that page.
** The page begins at offset *pOffset into the file. The *pOffset
** value is increased to the start of the next page in the journal.
**
-** The main rollback journal uses checksums - the statement journal does
+** The main rollback journal uses checksums - the statement journal does
** not.
**
** If the page number of the page record read from the (sub-)journal file
@@ -58368,7 +53927,7 @@ SQLITE_PRIVATE void sqlite3PagerAlignReserve(Pager *pDest, Pager *pSrc){
** is successfully read from the (sub-)journal file but appears to be
** corrupted, SQLITE_DONE is returned. Data is considered corrupted in
** two circumstances:
-**
+**
** * If the record page-number is illegal (0 or PAGER_MJ_PGNO), or
** * If the record is being rolled back from the main journal file
** and the checksum field does not match the record content.
@@ -58393,11 +53952,6 @@ static int pager_playback_one_page(
char *aData; /* Temporary storage for the page */
sqlite3_file *jfd; /* The file descriptor for the journal file */
int isSynced; /* True if journal page is synced */
-#ifdef SQLITE_HAS_CODEC
- /* The jrnlEnc flag is true if Journal pages should be passed through
- ** the codec. It is false for pure in-memory journals. */
- const int jrnlEnc = (isMainJrnl || pPager->subjInMemory==0);
-#endif
assert( (isMainJrnl&~1)==0 ); /* isMainJrnl is 0 or 1 */
assert( (isSavepnt&~1)==0 ); /* isSavepnt is 0 or 1 */
@@ -58408,7 +53962,7 @@ static int pager_playback_one_page(
assert( aData ); /* Temp storage must have already been allocated */
assert( pagerUseWal(pPager)==0 || (!isMainJrnl && isSavepnt) );
- /* Either the state is greater than PAGER_WRITER_CACHEMOD (a transaction
+ /* Either the state is greater than PAGER_WRITER_CACHEMOD (a transaction
** or savepoint rollback done at the request of the caller) or this is
** a hot-journal rollback. If it is a hot-journal rollback, the pager
** is in state OPEN and holds an EXCLUSIVE lock. Hot-journal rollback
@@ -58460,7 +54014,6 @@ static int pager_playback_one_page(
*/
if( pgno==1 && pPager->nReserve!=((u8*)aData)[20] ){
pPager->nReserve = ((u8*)aData)[20];
- pagerReportSize(pPager);
}
/* If the pager is in CACHEMOD state, then there must be a copy of this
@@ -58475,7 +54028,7 @@ static int pager_playback_one_page(
** assert()able.
**
** If in WRITER_DBMOD, WRITER_FINISHED or OPEN state, then we update the
- ** pager cache if it exists and the main file. The page is then marked
+ ** pager cache if it exists and the main file. The page is then marked
** not dirty. Since this code is only executed in PAGER_OPEN state for
** a hot-journal rollback, it is guaranteed that the page-cache is empty
** if the pager is in OPEN state.
@@ -58528,43 +54081,29 @@ static int pager_playback_one_page(
** is if the data was just read from an in-memory sub-journal. In that
** case it must be encrypted here before it is copied into the database
** file. */
-#ifdef SQLITE_HAS_CODEC
- if( !jrnlEnc ){
- CODEC2(pPager, aData, pgno, 7, rc=SQLITE_NOMEM_BKPT, aData);
- rc = sqlite3OsWrite(pPager->fd, (u8 *)aData, pPager->pageSize, ofst);
- CODEC1(pPager, aData, pgno, 3, rc=SQLITE_NOMEM_BKPT);
- }else
-#endif
rc = sqlite3OsWrite(pPager->fd, (u8 *)aData, pPager->pageSize, ofst);
if( pgno>pPager->dbFileSize ){
pPager->dbFileSize = pgno;
}
if( pPager->pBackup ){
-#ifdef SQLITE_HAS_CODEC
- if( jrnlEnc ){
- CODEC1(pPager, aData, pgno, 3, rc=SQLITE_NOMEM_BKPT);
- sqlite3BackupUpdate(pPager->pBackup, pgno, (u8*)aData);
- CODEC2(pPager, aData, pgno, 7, rc=SQLITE_NOMEM_BKPT,aData);
- }else
-#endif
sqlite3BackupUpdate(pPager->pBackup, pgno, (u8*)aData);
}
}else if( !isMainJrnl && pPg==0 ){
/* If this is a rollback of a savepoint and data was not written to
** the database and the page is not in-memory, there is a potential
- ** problem. When the page is next fetched by the b-tree layer, it
- ** will be read from the database file, which may or may not be
- ** current.
+ ** problem. When the page is next fetched by the b-tree layer, it
+ ** will be read from the database file, which may or may not be
+ ** current.
**
** There are a couple of different ways this can happen. All are quite
- ** obscure. When running in synchronous mode, this can only happen
+ ** obscure. When running in synchronous mode, this can only happen
** if the page is on the free-list at the start of the transaction, then
** populated, then moved using sqlite3PagerMovepage().
**
** The solution is to add an in-memory page to the cache containing
- ** the data just read from the sub-journal. Mark the page as dirty
- ** and if the pager requires a journal-sync, then mark the page as
+ ** the data just read from the sub-journal. Mark the page as dirty
+ ** and if the pager requires a journal-sync, then mark the page as
** requiring a journal-sync before it is written.
*/
assert( isSavepnt );
@@ -58598,165 +54137,164 @@ static int pager_playback_one_page(
if( pgno==1 ){
memcpy(&pPager->dbFileVers, &((u8*)pData)[24],sizeof(pPager->dbFileVers));
}
-
- /* Decode the page just read from disk */
-#if SQLITE_HAS_CODEC
- if( jrnlEnc ){ CODEC1(pPager, pData, pPg->pgno, 3, rc=SQLITE_NOMEM_BKPT); }
-#endif
sqlite3PcacheRelease(pPg);
}
return rc;
}
/*
-** Parameter zMaster is the name of a master journal file. A single journal
-** file that referred to the master journal file has just been rolled back.
-** This routine checks if it is possible to delete the master journal file,
+** Parameter zSuper is the name of a super-journal file. A single journal
+** file that referred to the super-journal file has just been rolled back.
+** This routine checks if it is possible to delete the super-journal file,
** and does so if it is.
**
-** Argument zMaster may point to Pager.pTmpSpace. So that buffer is not
+** Argument zSuper may point to Pager.pTmpSpace. So that buffer is not
** available for use within this function.
**
-** When a master journal file is created, it is populated with the names
-** of all of its child journals, one after another, formatted as utf-8
-** encoded text. The end of each child journal file is marked with a
-** nul-terminator byte (0x00). i.e. the entire contents of a master journal
+** When a super-journal file is created, it is populated with the names
+** of all of its child journals, one after another, formatted as utf-8
+** encoded text. The end of each child journal file is marked with a
+** nul-terminator byte (0x00). i.e. the entire contents of a super-journal
** file for a transaction involving two databases might be:
**
** "/home/bill/a.db-journal\x00/home/bill/b.db-journal\x00"
**
-** A master journal file may only be deleted once all of its child
+** A super-journal file may only be deleted once all of its child
** journals have been rolled back.
**
-** This function reads the contents of the master-journal file into
+** This function reads the contents of the super-journal file into
** memory and loops through each of the child journal names. For
** each child journal, it checks if:
**
** * if the child journal exists, and if so
-** * if the child journal contains a reference to master journal
-** file zMaster
+** * if the child journal contains a reference to super-journal
+** file zSuper
**
** If a child journal can be found that matches both of the criteria
** above, this function returns without doing anything. Otherwise, if
-** no such child journal can be found, file zMaster is deleted from
+** no such child journal can be found, file zSuper is deleted from
** the file-system using sqlite3OsDelete().
**
** If an IO error within this function, an error code is returned. This
** function allocates memory by calling sqlite3Malloc(). If an allocation
-** fails, SQLITE_NOMEM is returned. Otherwise, if no IO or malloc errors
+** fails, SQLITE_NOMEM is returned. Otherwise, if no IO or malloc errors
** occur, SQLITE_OK is returned.
**
** TODO: This function allocates a single block of memory to load
-** the entire contents of the master journal file. This could be
-** a couple of kilobytes or so - potentially larger than the page
+** the entire contents of the super-journal file. This could be
+** a couple of kilobytes or so - potentially larger than the page
** size.
*/
-static int pager_delmaster(Pager *pPager, const char *zMaster){
+static int pager_delsuper(Pager *pPager, const char *zSuper){
sqlite3_vfs *pVfs = pPager->pVfs;
int rc; /* Return code */
- sqlite3_file *pMaster; /* Malloc'd master-journal file descriptor */
+ sqlite3_file *pSuper; /* Malloc'd super-journal file descriptor */
sqlite3_file *pJournal; /* Malloc'd child-journal file descriptor */
- char *zMasterJournal = 0; /* Contents of master journal file */
- i64 nMasterJournal; /* Size of master journal file */
+ char *zSuperJournal = 0; /* Contents of super-journal file */
+ i64 nSuperJournal; /* Size of super-journal file */
char *zJournal; /* Pointer to one journal within MJ file */
- char *zMasterPtr; /* Space to hold MJ filename from a journal file */
- int nMasterPtr; /* Amount of space allocated to zMasterPtr[] */
+ char *zSuperPtr; /* Space to hold super-journal filename */
+ int nSuperPtr; /* Amount of space allocated to zSuperPtr[] */
- /* Allocate space for both the pJournal and pMaster file descriptors.
- ** If successful, open the master journal file for reading.
+ /* Allocate space for both the pJournal and pSuper file descriptors.
+ ** If successful, open the super-journal file for reading.
*/
- pMaster = (sqlite3_file *)sqlite3MallocZero(pVfs->szOsFile * 2);
- pJournal = (sqlite3_file *)(((u8 *)pMaster) + pVfs->szOsFile);
- if( !pMaster ){
+ pSuper = (sqlite3_file *)sqlite3MallocZero(pVfs->szOsFile * 2);
+ if( !pSuper ){
rc = SQLITE_NOMEM_BKPT;
+ pJournal = 0;
}else{
- const int flags = (SQLITE_OPEN_READONLY|SQLITE_OPEN_MASTER_JOURNAL);
- rc = sqlite3OsOpen(pVfs, zMaster, pMaster, flags, 0);
+ const int flags = (SQLITE_OPEN_READONLY|SQLITE_OPEN_SUPER_JOURNAL);
+ rc = sqlite3OsOpen(pVfs, zSuper, pSuper, flags, 0);
+ pJournal = (sqlite3_file *)(((u8 *)pSuper) + pVfs->szOsFile);
}
- if( rc!=SQLITE_OK ) goto delmaster_out;
+ if( rc!=SQLITE_OK ) goto delsuper_out;
- /* Load the entire master journal file into space obtained from
- ** sqlite3_malloc() and pointed to by zMasterJournal. Also obtain
- ** sufficient space (in zMasterPtr) to hold the names of master
- ** journal files extracted from regular rollback-journals.
+ /* Load the entire super-journal file into space obtained from
+ ** sqlite3_malloc() and pointed to by zSuperJournal. Also obtain
+ ** sufficient space (in zSuperPtr) to hold the names of super-journal
+ ** files extracted from regular rollback-journals.
*/
- rc = sqlite3OsFileSize(pMaster, &nMasterJournal);
- if( rc!=SQLITE_OK ) goto delmaster_out;
- nMasterPtr = pVfs->mxPathname+1;
- zMasterJournal = sqlite3Malloc(nMasterJournal + nMasterPtr + 2);
- if( !zMasterJournal ){
+ rc = sqlite3OsFileSize(pSuper, &nSuperJournal);
+ if( rc!=SQLITE_OK ) goto delsuper_out;
+ nSuperPtr = pVfs->mxPathname+1;
+ zSuperJournal = sqlite3Malloc(nSuperJournal + nSuperPtr + 2);
+ if( !zSuperJournal ){
rc = SQLITE_NOMEM_BKPT;
- goto delmaster_out;
+ goto delsuper_out;
}
- zMasterPtr = &zMasterJournal[nMasterJournal+2];
- rc = sqlite3OsRead(pMaster, zMasterJournal, (int)nMasterJournal, 0);
- if( rc!=SQLITE_OK ) goto delmaster_out;
- zMasterJournal[nMasterJournal] = 0;
- zMasterJournal[nMasterJournal+1] = 0;
+ zSuperPtr = &zSuperJournal[nSuperJournal+2];
+ rc = sqlite3OsRead(pSuper, zSuperJournal, (int)nSuperJournal, 0);
+ if( rc!=SQLITE_OK ) goto delsuper_out;
+ zSuperJournal[nSuperJournal] = 0;
+ zSuperJournal[nSuperJournal+1] = 0;
- zJournal = zMasterJournal;
- while( (zJournal-zMasterJournal)pageSize bytes).
+** DBMOD or OPEN state, this function is a no-op. Otherwise, the size
+** of the file is changed to nPage pages (nPage*pPager->pageSize bytes).
** If the file on disk is currently larger than nPage pages, then use the VFS
** xTruncate() method to truncate it.
**
-** Or, it might be the case that the file on disk is smaller than
-** nPage pages. Some operating system implementations can get confused if
-** you try to truncate a file to some size that is larger than it
-** currently is, so detect this case and write a single zero byte to
+** Or, it might be the case that the file on disk is smaller than
+** nPage pages. Some operating system implementations can get confused if
+** you try to truncate a file to some size that is larger than it
+** currently is, so detect this case and write a single zero byte to
** the end of the new file instead.
**
** If successful, return SQLITE_OK. If an IO error occurs while modifying
@@ -58766,9 +54304,9 @@ static int pager_truncate(Pager *pPager, Pgno nPage){
int rc = SQLITE_OK;
assert( pPager->eState!=PAGER_ERROR );
assert( pPager->eState!=PAGER_READER );
-
- if( isOpen(pPager->fd)
- && (pPager->eState>=PAGER_WRITER_DBMOD || pPager->eState==PAGER_OPEN)
+
+ if( isOpen(pPager->fd)
+ && (pPager->eState>=PAGER_WRITER_DBMOD || pPager->eState==PAGER_OPEN)
){
i64 currentSize, newSize;
int szPage = pPager->pageSize;
@@ -58812,9 +54350,9 @@ SQLITE_PRIVATE int sqlite3SectorSize(sqlite3_file *pFile){
/*
** Set the value of the Pager.sectorSize variable for the given
** pager based on the value returned by the xSectorSize method
-** of the open database file. The sector size will be used
-** to determine the size and alignment of journal header and
-** master journal pointers within created journal files.
+** of the open database file. The sector size will be used
+** to determine the size and alignment of journal header and
+** super-journal pointers within created journal files.
**
** For temporary files the effective sector size is always 512 bytes.
**
@@ -58836,7 +54374,7 @@ static void setSectorSize(Pager *pPager){
assert( isOpen(pPager->fd) || pPager->tempFile );
if( pPager->tempFile
- || (sqlite3OsDeviceCharacteristics(pPager->fd) &
+ || (sqlite3OsDeviceCharacteristics(pPager->fd) &
SQLITE_IOCAP_POWERSAFE_OVERWRITE)!=0
){
/* Sector size doesn't matter for temporary files. Also, the file
@@ -58850,15 +54388,15 @@ static void setSectorSize(Pager *pPager){
/*
** Playback the journal and thus restore the database file to
-** the state it was in before we started making changes.
+** the state it was in before we started making changes.
**
-** The journal file format is as follows:
+** The journal file format is as follows:
**
** (1) 8 byte prefix. A copy of aJournalMagic[].
** (2) 4 byte big-endian integer which is the number of valid page records
** in the journal. If this value is 0xffffffff, then compute the
** number of page records from the journal size.
-** (3) 4 byte big-endian integer which is the initial value for the
+** (3) 4 byte big-endian integer which is the initial value for the
** sanity checksum.
** (4) 4 byte integer which is the number of pages to truncate the
** database to during a rollback.
@@ -58887,7 +54425,7 @@ static void setSectorSize(Pager *pPager){
** from the file size. This value is used when the user selects the
** no-sync option for the journal. A power failure could lead to corruption
** in this case. But for things like temporary table (which will be
-** deleted when the power is restored) we don't care.
+** deleted when the power is restored) we don't care.
**
** If the file opened as the journal file is not a well-formed
** journal file then all pages up to the first corrupted page are rolled
@@ -58899,7 +54437,7 @@ static void setSectorSize(Pager *pPager){
** and an error code is returned.
**
** The isHot parameter indicates that we are trying to rollback a journal
-** that might be a hot journal. Or, it could be that the journal is
+** that might be a hot journal. Or, it could be that the journal is
** preserved because of JOURNALMODE_PERSIST or JOURNALMODE_TRUNCATE.
** If the journal really is hot, reset the pager cache prior rolling
** back any content. If the journal is merely persistent, no reset is
@@ -58913,7 +54451,7 @@ static int pager_playback(Pager *pPager, int isHot){
Pgno mxPg = 0; /* Size of the original file in pages */
int rc; /* Result code of a subroutine */
int res = 1; /* Value returned by sqlite3OsAccess() */
- char *zMaster = 0; /* Name of master journal file if any */
+ char *zSuper = 0; /* Name of super-journal file if any */
int needPagerReset; /* True to reset page prior to first page rollback */
int nPlayback = 0; /* Total number of pages restored from journal */
u32 savedPageSize = pPager->pageSize;
@@ -58927,8 +54465,8 @@ static int pager_playback(Pager *pPager, int isHot){
goto end_playback;
}
- /* Read the master journal name from the journal, if it is present.
- ** If a master journal file name is specified, but the file is not
+ /* Read the super-journal name from the journal, if it is present.
+ ** If a super-journal file name is specified, but the file is not
** present on disk, then the journal is not hot and does not need to be
** played back.
**
@@ -58938,21 +54476,21 @@ static int pager_playback(Pager *pPager, int isHot){
** mxPathname is 512, which is the same as the minimum allowable value
** for pageSize.
*/
- zMaster = pPager->pTmpSpace;
- rc = readMasterJournal(pPager->jfd, zMaster, pPager->pVfs->mxPathname+1);
- if( rc==SQLITE_OK && zMaster[0] ){
- rc = sqlite3OsAccess(pVfs, zMaster, SQLITE_ACCESS_EXISTS, &res);
+ zSuper = pPager->pTmpSpace;
+ rc = readSuperJournal(pPager->jfd, zSuper, pPager->pVfs->mxPathname+1);
+ if( rc==SQLITE_OK && zSuper[0] ){
+ rc = sqlite3OsAccess(pVfs, zSuper, SQLITE_ACCESS_EXISTS, &res);
}
- zMaster = 0;
+ zSuper = 0;
if( rc!=SQLITE_OK || !res ){
goto end_playback;
}
pPager->journalOff = 0;
needPagerReset = isHot;
- /* This loop terminates either when a readJournalHdr() or
- ** pager_playback_one_page() call returns SQLITE_DONE or an IO error
- ** occurs.
+ /* This loop terminates either when a readJournalHdr() or
+ ** pager_playback_one_page() call returns SQLITE_DONE or an IO error
+ ** occurs.
*/
while( 1 ){
/* Read the next journal header from the journal file. If there are
@@ -58961,7 +54499,7 @@ static int pager_playback(Pager *pPager, int isHot){
** This indicates nothing more needs to be rolled back.
*/
rc = readJournalHdr(pPager, isHot, szJ, &nRec, &mxPg);
- if( rc!=SQLITE_OK ){
+ if( rc!=SQLITE_OK ){
if( rc==SQLITE_DONE ){
rc = SQLITE_OK;
}
@@ -58989,7 +54527,7 @@ static int pager_playback(Pager *pPager, int isHot){
** chunk of the journal contains zero pages to be rolled back. But
** when doing a ROLLBACK and the nRec==0 chunk is the last chunk in
** the journal, it means that the journal might contain additional
- ** pages that need to be rolled back and that the number of pages
+ ** pages that need to be rolled back and that the number of pages
** should be computed based on the journal file size.
*/
if( nRec==0 && !isHot &&
@@ -59008,7 +54546,7 @@ static int pager_playback(Pager *pPager, int isHot){
pPager->dbSize = mxPg;
}
- /* Copy original pages out of the journal and back into the
+ /* Copy original pages out of the journal and back into the
** database file and/or page cache.
*/
for(u=0; ufd,SQLITE_FCNTL_DB_UNCHANGED,0);
#endif
- /* If this playback is happening automatically as a result of an IO or
- ** malloc error that occurred after the change-counter was updated but
- ** before the transaction was committed, then the change-counter
- ** modification may just have been reverted. If this happens in exclusive
+ /* If this playback is happening automatically as a result of an IO or
+ ** malloc error that occurred after the change-counter was updated but
+ ** before the transaction was committed, then the change-counter
+ ** modification may just have been reverted. If this happens in exclusive
** mode, then subsequent transactions performed by the connection will not
** update the change-counter at all. This may lead to cache inconsistency
** problems for other processes at some point in the future. So, just
@@ -59070,8 +54608,8 @@ end_playback:
pPager->changeCountDone = pPager->tempFile;
if( rc==SQLITE_OK ){
- zMaster = pPager->pTmpSpace;
- rc = readMasterJournal(pPager->jfd, zMaster, pPager->pVfs->mxPathname+1);
+ zSuper = pPager->pTmpSpace;
+ rc = readSuperJournal(pPager->jfd, zSuper, pPager->pVfs->mxPathname+1);
testcase( rc!=SQLITE_OK );
}
if( rc==SQLITE_OK
@@ -59080,14 +54618,14 @@ end_playback:
rc = sqlite3PagerSync(pPager, 0);
}
if( rc==SQLITE_OK ){
- rc = pager_end_transaction(pPager, zMaster[0]!='\0', 0);
+ rc = pager_end_transaction(pPager, zSuper[0]!='\0', 0);
testcase( rc!=SQLITE_OK );
}
- if( rc==SQLITE_OK && zMaster[0] && res ){
- /* If there was a master journal and this routine will return success,
- ** see if it is possible to delete the master journal.
+ if( rc==SQLITE_OK && zSuper[0] && res ){
+ /* If there was a super-journal and this routine will return success,
+ ** see if it is possible to delete the super-journal.
*/
- rc = pager_delmaster(pPager, zMaster);
+ rc = pager_delsuper(pPager, zSuper);
testcase( rc!=SQLITE_OK );
}
if( isHot && nPlayback ){
@@ -59106,7 +54644,7 @@ end_playback:
/*
** Read the content for page pPg out of the database file (or out of
-** the WAL if that is where the most recent copy if found) into
+** the WAL if that is where the most recent copy if found) into
** pPg->pData. A shared lock or greater must be held on the database
** file before this function is called.
**
@@ -59162,8 +54700,6 @@ static int readDbPage(PgHdr *pPg){
memcpy(&pPager->dbFileVers, dbFileVers, sizeof(pPager->dbFileVers));
}
}
- CODEC1(pPager, pPg->pData, pPg->pgno, 3, rc = SQLITE_NOMEM_BKPT);
-
PAGER_INCR(sqlite3_pager_readdb_count);
PAGER_INCR(pPager->nRead);
IOTRACE(("PGIN %p %d\n", pPager, pPg->pgno));
@@ -59197,15 +54733,15 @@ static void pager_write_changecounter(PgHdr *pPg){
#ifndef SQLITE_OMIT_WAL
/*
-** This function is invoked once for each page that has already been
+** This function is invoked once for each page that has already been
** written into the log file when a WAL transaction is rolled back.
-** Parameter iPg is the page number of said page. The pCtx argument
+** Parameter iPg is the page number of said page. The pCtx argument
** is actually a pointer to the Pager structure.
**
** If page iPg is present in the cache, and has no outstanding references,
** it is discarded. Otherwise, if there are one or more outstanding
** references, the page content is reloaded from the database. If the
-** attempt to reload content from the database is required and fails,
+** attempt to reload content from the database is required and fails,
** return an SQLite error code. Otherwise, SQLITE_OK.
*/
static int pagerUndoCallback(void *pCtx, Pgno iPg){
@@ -59231,7 +54767,7 @@ static int pagerUndoCallback(void *pCtx, Pgno iPg){
** updated as data is copied out of the rollback journal and into the
** database. This is not generally possible with a WAL database, as
** rollback involves simply truncating the log file. Therefore, if one
- ** or more frames have already been written to the log (and therefore
+ ** or more frames have already been written to the log (and therefore
** also copied into the backup databases) as part of this transaction,
** the backups must be restarted.
*/
@@ -59248,7 +54784,7 @@ static int pagerRollbackWal(Pager *pPager){
PgHdr *pList; /* List of dirty pages to revert */
/* For all pages in the cache that are currently dirty or have already
- ** been written (but not committed) to the log file, do one of the
+ ** been written (but not committed) to the log file, do one of the
** following:
**
** + Discard the cached page (if refcount==0), or
@@ -59270,11 +54806,11 @@ static int pagerRollbackWal(Pager *pPager){
** This function is a wrapper around sqlite3WalFrames(). As well as logging
** the contents of the list of pages headed by pList (connected by pDirty),
** this function notifies any active backup processes that the pages have
-** changed.
+** changed.
**
** The list of pages passed into this routine is always sorted by page number.
** Hence, if page 1 appears anywhere on the list, it will be the first page.
-*/
+*/
static int pagerWalFrames(
Pager *pPager, /* Pager object */
PgHdr *pList, /* List of frames to log */
@@ -59315,7 +54851,7 @@ static int pagerWalFrames(
pPager->aStat[PAGER_STAT_WRITE] += nList;
if( pList->pgno==1 ) pager_write_changecounter(pList);
- rc = sqlite3WalFrames(pPager->pWal,
+ rc = sqlite3WalFrames(pPager->pWal,
pPager->pageSize, pList, nTruncate, isCommit, pPager->walSyncFlags
);
if( rc==SQLITE_OK && pPager->pBackup ){
@@ -59430,9 +54966,9 @@ static int pagerPagecount(Pager *pPager, Pgno *pnPage){
** Return SQLITE_OK or an error code.
**
** The caller must hold a SHARED lock on the database file to call this
-** function. Because an EXCLUSIVE lock on the db file is required to delete
-** a WAL on a none-empty database, this ensures there is no race condition
-** between the xAccess() below and an xDelete() being executed by some
+** function. Because an EXCLUSIVE lock on the db file is required to delete
+** a WAL on a none-empty database, this ensures there is no race condition
+** between the xAccess() below and an xDelete() being executed by some
** other connection.
*/
static int pagerOpenWalIfPresent(Pager *pPager){
@@ -59468,21 +55004,21 @@ static int pagerOpenWalIfPresent(Pager *pPager){
/*
** Playback savepoint pSavepoint. Or, if pSavepoint==NULL, then playback
-** the entire master journal file. The case pSavepoint==NULL occurs when
-** a ROLLBACK TO command is invoked on a SAVEPOINT that is a transaction
+** the entire super-journal file. The case pSavepoint==NULL occurs when
+** a ROLLBACK TO command is invoked on a SAVEPOINT that is a transaction
** savepoint.
**
-** When pSavepoint is not NULL (meaning a non-transaction savepoint is
+** When pSavepoint is not NULL (meaning a non-transaction savepoint is
** being rolled back), then the rollback consists of up to three stages,
** performed in the order specified:
**
** * Pages are played back from the main journal starting at byte
-** offset PagerSavepoint.iOffset and continuing to
+** offset PagerSavepoint.iOffset and continuing to
** PagerSavepoint.iHdrOffset, or to the end of the main journal
** file if PagerSavepoint.iHdrOffset is zero.
**
** * If PagerSavepoint.iHdrOffset is not zero, then pages are played
-** back starting from the journal header immediately following
+** back starting from the journal header immediately following
** PagerSavepoint.iHdrOffset to the end of the main journal file.
**
** * Pages are then played back from the sub-journal file, starting
@@ -59498,7 +55034,7 @@ static int pagerOpenWalIfPresent(Pager *pPager){
** journal file. There is no need for a bitvec in this case.
**
** In either case, before playback commences the Pager.dbSize variable
-** is reset to the value that it held at the start of the savepoint
+** is reset to the value that it held at the start of the savepoint
** (or transaction). No page with a page-number greater than this value
** is played back. If one is encountered it is simply skipped.
*/
@@ -59519,7 +55055,7 @@ static int pagerPlaybackSavepoint(Pager *pPager, PagerSavepoint *pSavepoint){
}
}
- /* Set the database size back to the value it was before the savepoint
+ /* Set the database size back to the value it was before the savepoint
** being reverted was opened.
*/
pPager->dbSize = pSavepoint ? pSavepoint->nOrig : pPager->dbOrigSize;
@@ -59572,7 +55108,7 @@ static int pagerPlaybackSavepoint(Pager *pPager, PagerSavepoint *pSavepoint){
** test is related to ticket #2565. See the discussion in the
** pager_playback() function for additional information.
*/
- if( nJRec==0
+ if( nJRec==0
&& pPager->journalHdr+JOURNAL_HDR_SZ(pPager)==pPager->journalOff
){
nJRec = (u32)((szJ - pPager->journalOff)/JOURNAL_PG_SZ(pPager));
@@ -59748,7 +55284,7 @@ SQLITE_PRIVATE void sqlite3PagerSetFlags(
/*
** The following global variable is incremented whenever the library
** attempts to open a temporary file. This information is used for
-** testing and analysis only.
+** testing and analysis only.
*/
#ifdef SQLITE_TEST
SQLITE_API int sqlite3_opentemp_count = 0;
@@ -59757,8 +55293,8 @@ SQLITE_API int sqlite3_opentemp_count = 0;
/*
** Open a temporary file.
**
-** Write the file descriptor into *pFile. Return SQLITE_OK on success
-** or some other error code if we fail. The OS will automatically
+** Write the file descriptor into *pFile. Return SQLITE_OK on success
+** or some other error code if we fail. The OS will automatically
** delete the temporary file when it is closed.
**
** The flags passed to the VFS layer xOpen() call are those specified
@@ -59790,9 +55326,9 @@ static int pagerOpentemp(
/*
** Set the busy handler function.
**
-** The pager invokes the busy-handler if sqlite3OsLock() returns
+** The pager invokes the busy-handler if sqlite3OsLock() returns
** SQLITE_BUSY when trying to upgrade from no-lock to a SHARED lock,
-** or when trying to upgrade from a RESERVED lock to an EXCLUSIVE
+** or when trying to upgrade from a RESERVED lock to an EXCLUSIVE
** lock. It does *not* invoke the busy handler when upgrading from
** SHARED to RESERVED, or when upgrading from SHARED to EXCLUSIVE
** (which occurs during hot-journal rollback). Summary:
@@ -59804,7 +55340,7 @@ static int pagerOpentemp(
** SHARED_LOCK -> EXCLUSIVE_LOCK | No
** RESERVED_LOCK -> EXCLUSIVE_LOCK | Yes
**
-** If the busy-handler callback returns non-zero, the lock is
+** If the busy-handler callback returns non-zero, the lock is
** retried. If it returns zero, then the SQLITE_BUSY error is
** returned to the caller of the pager API function.
*/
@@ -59823,16 +55359,16 @@ SQLITE_PRIVATE void sqlite3PagerSetBusyHandler(
}
/*
-** Change the page size used by the Pager object. The new page size
+** Change the page size used by the Pager object. The new page size
** is passed in *pPageSize.
**
** If the pager is in the error state when this function is called, it
-** is a no-op. The value returned is the error state error code (i.e.
+** is a no-op. The value returned is the error state error code (i.e.
** one of SQLITE_IOERR, an SQLITE_IOERR_xxx sub-code or SQLITE_FULL).
**
** Otherwise, if all of the following are true:
**
-** * the new page size (value of *pPageSize) is valid (a power
+** * the new page size (value of *pPageSize) is valid (a power
** of two between 512 and SQLITE_MAX_PAGE_SIZE, inclusive), and
**
** * there are no outstanding page references, and
@@ -59842,14 +55378,14 @@ SQLITE_PRIVATE void sqlite3PagerSetBusyHandler(
**
** then the pager object page size is set to *pPageSize.
**
-** If the page size is changed, then this function uses sqlite3PagerMalloc()
-** to obtain a new Pager.pTmpSpace buffer. If this allocation attempt
-** fails, SQLITE_NOMEM is returned and the page size remains unchanged.
+** If the page size is changed, then this function uses sqlite3PagerMalloc()
+** to obtain a new Pager.pTmpSpace buffer. If this allocation attempt
+** fails, SQLITE_NOMEM is returned and the page size remains unchanged.
** In all other cases, SQLITE_OK is returned.
**
** If the page size is not changed, either because one of the enumerated
** conditions above is not true, the pager was in error state when this
-** function was called, or because the memory allocation attempt failed,
+** function was called, or because the memory allocation attempt failed,
** then *pPageSize is set to the old, retained page size before returning.
*/
SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager *pPager, u32 *pPageSize, int nReserve){
@@ -59859,7 +55395,7 @@ SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager *pPager, u32 *pPageSize, int nR
** function may be called from within PagerOpen(), before the state
** of the Pager object is internally consistent.
**
- ** At one point this function returned an error if the pager was in
+ ** At one point this function returned an error if the pager was in
** PAGER_ERROR state. But since PAGER_ERROR state guarantees that
** there is at least one outstanding page reference, this function
** is a no-op for that case anyhow.
@@ -59868,8 +55404,8 @@ SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager *pPager, u32 *pPageSize, int nR
u32 pageSize = *pPageSize;
assert( pageSize==0 || (pageSize>=512 && pageSize<=SQLITE_MAX_PAGE_SIZE) );
if( (pPager->memDb==0 || pPager->dbSize==0)
- && sqlite3PcacheRefCount(pPager->pPCache)==0
- && pageSize && pageSize!=(u32)pPager->pageSize
+ && sqlite3PcacheRefCount(pPager->pPCache)==0
+ && pageSize && pageSize!=(u32)pPager->pageSize
){
char *pNew = NULL; /* New temp space */
i64 nByte = 0;
@@ -59907,7 +55443,6 @@ SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager *pPager, u32 *pPageSize, int nR
if( nReserve<0 ) nReserve = pPager->nReserve;
assert( nReserve>=0 && nReserve<1000 );
pPager->nReserve = (i16)nReserve;
- pagerReportSize(pPager);
pagerFixMaplimit(pPager);
}
return rc;
@@ -59926,13 +55461,13 @@ SQLITE_PRIVATE void *sqlite3PagerTempSpace(Pager *pPager){
}
/*
-** Attempt to set the maximum database page count if mxPage is positive.
+** Attempt to set the maximum database page count if mxPage is positive.
** Make no changes if mxPage is zero or negative. And never reduce the
** maximum page count below the current size of the database.
**
** Regardless of mxPage, return the current maximum page count.
*/
-SQLITE_PRIVATE int sqlite3PagerMaxPageCount(Pager *pPager, int mxPage){
+SQLITE_PRIVATE Pgno sqlite3PagerMaxPageCount(Pager *pPager, Pgno mxPage){
if( mxPage>0 ){
pPager->mxPgno = mxPage;
}
@@ -59970,11 +55505,11 @@ void enable_simulated_io_errors(void){
/*
** Read the first N bytes from the beginning of the file into memory
-** that pDest points to.
+** that pDest points to.
**
** If the pager was opened on a transient file (zFilename==""), or
** opened on a file less than N bytes in size, the output buffer is
-** zeroed and SQLITE_OK returned. The rationale for this is that this
+** zeroed and SQLITE_OK returned. The rationale for this is that this
** function is used to read database headers, and a new transient or
** zero sized database has a header than consists entirely of zeroes.
**
@@ -60007,7 +55542,7 @@ SQLITE_PRIVATE int sqlite3PagerReadFileheader(Pager *pPager, int N, unsigned cha
** This function may only be called when a read-transaction is open on
** the pager. It returns the total number of pages in the database.
**
-** However, if the file is between 1 and bytes in size, then
+** However, if the file is between 1 and bytes in size, then
** this is considered a 1 page file.
*/
SQLITE_PRIVATE void sqlite3PagerPagecount(Pager *pPager, int *pnPage){
@@ -60022,19 +55557,19 @@ SQLITE_PRIVATE void sqlite3PagerPagecount(Pager *pPager, int *pnPage){
** a similar or greater lock is already held, this function is a no-op
** (returning SQLITE_OK immediately).
**
-** Otherwise, attempt to obtain the lock using sqlite3OsLock(). Invoke
-** the busy callback if the lock is currently not available. Repeat
-** until the busy callback returns false or until the attempt to
+** Otherwise, attempt to obtain the lock using sqlite3OsLock(). Invoke
+** the busy callback if the lock is currently not available. Repeat
+** until the busy callback returns false or until the attempt to
** obtain the lock succeeds.
**
** Return SQLITE_OK on success and an error code if we cannot obtain
-** the lock. If the lock is obtained successfully, set the Pager.state
+** the lock. If the lock is obtained successfully, set the Pager.state
** variable to locktype before returning.
*/
static int pager_wait_on_lock(Pager *pPager, int locktype){
int rc; /* Return code */
- /* Check that this is either a no-op (because the requested lock is
+ /* Check that this is either a no-op (because the requested lock is
** already held), or one of the transitions that the busy-handler
** may be invoked during, according to the comment above
** sqlite3PagerSetBusyhandler().
@@ -60051,10 +55586,10 @@ static int pager_wait_on_lock(Pager *pPager, int locktype){
}
/*
-** Function assertTruncateConstraint(pPager) checks that one of the
+** Function assertTruncateConstraint(pPager) checks that one of the
** following is true for all dirty pages currently in the page-cache:
**
-** a) The page number is less than or equal to the size of the
+** a) The page number is less than or equal to the size of the
** current database image, in pages, OR
**
** b) if the page content were written at this time, it would not
@@ -60067,9 +55602,9 @@ static int pager_wait_on_lock(Pager *pPager, int locktype){
** the database file. If a savepoint transaction were rolled back after
** this happened, the correct behavior would be to restore the current
** content of the page. However, since this content is not present in either
-** the database file or the portion of the rollback journal and
+** the database file or the portion of the rollback journal and
** sub-journal rolled back the content could not be restored and the
-** database image would become corrupt. It is therefore fortunate that
+** database image would become corrupt. It is therefore fortunate that
** this circumstance cannot arise.
*/
#if defined(SQLITE_DEBUG)
@@ -60085,9 +55620,9 @@ static void assertTruncateConstraint(Pager *pPager){
#endif
/*
-** Truncate the in-memory database file image to nPage pages. This
-** function does not actually modify the database file on disk. It
-** just sets the internal state of the pager object so that the
+** Truncate the in-memory database file image to nPage pages. This
+** function does not actually modify the database file on disk. It
+** just sets the internal state of the pager object so that the
** truncation will be done when the current transaction is committed.
**
** This function is only called right before committing a transaction.
@@ -60102,11 +55637,11 @@ SQLITE_PRIVATE void sqlite3PagerTruncateImage(Pager *pPager, Pgno nPage){
/* At one point the code here called assertTruncateConstraint() to
** ensure that all pages being truncated away by this operation are,
- ** if one or more savepoints are open, present in the savepoint
+ ** if one or more savepoints are open, present in the savepoint
** journal so that they can be restored if the savepoint is rolled
** back. This is no longer necessary as this function is now only
- ** called right before committing a transaction. So although the
- ** Pager object may still have open savepoints (Pager.nSavepoint!=0),
+ ** called right before committing a transaction. So although the
+ ** Pager object may still have open savepoints (Pager.nSavepoint!=0),
** they cannot be rolled back. So the assertTruncateConstraint() call
** is no longer correct. */
}
@@ -60118,12 +55653,12 @@ SQLITE_PRIVATE void sqlite3PagerTruncateImage(Pager *pPager, Pgno nPage){
** size of the journal file so that the pager_playback() routine knows
** that the entire journal file has been synced.
**
-** Syncing a hot-journal to disk before attempting to roll it back ensures
+** Syncing a hot-journal to disk before attempting to roll it back ensures
** that if a power-failure occurs during the rollback, the process that
** attempts rollback following system recovery sees the same journal
** content as this process.
**
-** If everything goes as planned, SQLITE_OK is returned. Otherwise,
+** If everything goes as planned, SQLITE_OK is returned. Otherwise,
** an SQLite error code.
*/
static int pagerSyncHotJournal(Pager *pPager){
@@ -60139,7 +55674,7 @@ static int pagerSyncHotJournal(Pager *pPager){
#if SQLITE_MAX_MMAP_SIZE>0
/*
-** Obtain a reference to a memory mapped page object for page number pgno.
+** Obtain a reference to a memory mapped page object for page number pgno.
** The new object will use the pointer pData, obtained from xFetch().
** If successful, set *ppPage to point to the new page reference
** and return SQLITE_OK. Otherwise, return an SQLite error code and set
@@ -60155,7 +55690,7 @@ static int pagerAcquireMapPage(
PgHdr **ppPage /* OUT: Acquired page object */
){
PgHdr *p; /* Memory mapped page to return */
-
+
if( pPager->pMmapFreelist ){
*ppPage = p = pPager->pMmapFreelist;
pPager->pMmapFreelist = p->pDirty;
@@ -60189,7 +55724,7 @@ static int pagerAcquireMapPage(
#endif
/*
-** Release a reference to page pPg. pPg must have been returned by an
+** Release a reference to page pPg. pPg must have been returned by an
** earlier call to pagerAcquireMapPage().
*/
static void pagerReleaseMapPage(PgHdr *pPg){
@@ -60249,7 +55784,7 @@ static int databaseIsUnmoved(Pager *pPager){
** result in a coredump.
**
** This function always succeeds. If a transaction is active an attempt
-** is made to roll it back. If an error occurs during the rollback
+** is made to roll it back. If an error occurs during the rollback
** a hot journal may be left in the filesystem but no error is returned
** to the caller.
*/
@@ -60266,7 +55801,7 @@ SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager, sqlite3 *db){
{
u8 *a = 0;
assert( db || pPager->pWal==0 );
- if( db && 0==(db->flags & SQLITE_NoCkptOnClose)
+ if( db && 0==(db->flags & SQLITE_NoCkptOnClose)
&& SQLITE_OK==databaseIsUnmoved(pPager)
){
a = pTmp;
@@ -60280,8 +55815,8 @@ SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager, sqlite3 *db){
pager_unlock(pPager);
}else{
/* If it is open, sync the journal file before calling UnlockAndRollback.
- ** If this is not done, then an unsynced portion of the open journal
- ** file may be played back into the database. If a power failure occurs
+ ** If this is not done, then an unsynced portion of the open journal
+ ** file may be played back into the database. If a power failure occurs
** while this is happening, the database could become corrupt.
**
** If an error occurs while trying to sync the journal, shift the pager
@@ -60303,11 +55838,6 @@ SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager, sqlite3 *db){
sqlite3OsClose(pPager->fd);
sqlite3PageFree(pTmp);
sqlite3PcacheClose(pPager->pPCache);
-
-#ifdef SQLITE_HAS_CODEC
- if( pPager->xCodecFree ) pPager->xCodecFree(pPager->pCodec);
-#endif
-
assert( !pPager->aSavepoint && !pPager->pInJournal );
assert( !isOpen(pPager->jfd) && !isOpen(pPager->sjfd) );
@@ -60337,7 +55867,7 @@ SQLITE_PRIVATE void sqlite3PagerRef(DbPage *pPg){
** disk and can be restored in the event of a hot-journal rollback.
**
** If the Pager.noSync flag is set, then this function is a no-op.
-** Otherwise, the actions required depend on the journal-mode and the
+** Otherwise, the actions required depend on the journal-mode and the
** device characteristics of the file-system, as follows:
**
** * If the journal file is an in-memory journal file, no action need
@@ -60349,7 +55879,7 @@ SQLITE_PRIVATE void sqlite3PagerRef(DbPage *pPg){
** been written following it. If the pager is operating in full-sync
** mode, then the journal file is synced before this field is updated.
**
-** * If the device does not support the SEQUENTIAL property, then
+** * If the device does not support the SEQUENTIAL property, then
** journal file is synced.
**
** Or, in pseudo-code:
@@ -60358,11 +55888,11 @@ SQLITE_PRIVATE void sqlite3PagerRef(DbPage *pPg){
** if( NOT SAFE_APPEND ){
** if( ) xSync();
**
-** }
+** }
** if( NOT SEQUENTIAL ) xSync();
** }
**
-** If successful, this routine clears the PGHDR_NEED_SYNC flag of every
+** If successful, this routine clears the PGHDR_NEED_SYNC flag of every
** page currently held in memory before returning SQLITE_OK. If an IO
** error is encountered, then the IO error code is returned to the caller.
*/
@@ -60390,10 +55920,10 @@ static int syncJournal(Pager *pPager, int newHdr){
** mode, then the journal file may at this point actually be larger
** than Pager.journalOff bytes. If the next thing in the journal
** file happens to be a journal-header (written as part of the
- ** previous connection's transaction), and a crash or power-failure
- ** occurs after nRec is updated but before this connection writes
- ** anything else to the journal file (or commits/rolls back its
- ** transaction), then SQLite may become confused when doing the
+ ** previous connection's transaction), and a crash or power-failure
+ ** occurs after nRec is updated but before this connection writes
+ ** anything else to the journal file (or commits/rolls back its
+ ** transaction), then SQLite may become confused when doing the
** hot-journal rollback following recovery. It may roll back all
** of this connections data, then proceed to rolling back the old,
** out-of-date data that follows it. Database corruption.
@@ -60403,7 +55933,7 @@ static int syncJournal(Pager *pPager, int newHdr){
** byte to the start of it to prevent it from being recognized.
**
** Variable iNextHdrOffset is set to the offset at which this
- ** problematic header will occur, if it exists. aMagic is used
+ ** problematic header will occur, if it exists. aMagic is used
** as a temporary buffer to inspect the first couple of bytes of
** the potential journal header.
*/
@@ -60430,7 +55960,7 @@ static int syncJournal(Pager *pPager, int newHdr){
** it as a candidate for rollback.
**
** This is not required if the persistent media supports the
- ** SAFE_APPEND property. Because in this case it is not possible
+ ** SAFE_APPEND property. Because in this case it is not possible
** for garbage data to be appended to the file, the nRec field
** is populated with 0xFFFFFFFF when the journal header is written
** and never needs to be updated.
@@ -60450,7 +55980,7 @@ static int syncJournal(Pager *pPager, int newHdr){
if( 0==(iDc&SQLITE_IOCAP_SEQUENTIAL) ){
PAGERTRACE(("SYNC journal of %d\n", PAGERID(pPager)));
IOTRACE(("JSYNC %p\n", pPager))
- rc = sqlite3OsSync(pPager->jfd, pPager->syncFlags|
+ rc = sqlite3OsSync(pPager->jfd, pPager->syncFlags|
(pPager->syncFlags==SQLITE_SYNC_FULL?SQLITE_SYNC_DATAONLY:0)
);
if( rc!=SQLITE_OK ) return rc;
@@ -60467,8 +55997,8 @@ static int syncJournal(Pager *pPager, int newHdr){
}
}
- /* Unless the pager is in noSync mode, the journal file was just
- ** successfully synced. Either way, clear the PGHDR_NEED_SYNC flag on
+ /* Unless the pager is in noSync mode, the journal file was just
+ ** successfully synced. Either way, clear the PGHDR_NEED_SYNC flag on
** all pages.
*/
sqlite3PcacheClearSyncFlags(pPager->pPCache);
@@ -60488,9 +56018,9 @@ static int syncJournal(Pager *pPager, int newHdr){
** is called. Before writing anything to the database file, this lock
** is upgraded to an EXCLUSIVE lock. If the lock cannot be obtained,
** SQLITE_BUSY is returned and no data is written to the database file.
-**
+**
** If the pager is a temp-file pager and the actual file-system file
-** is not yet open, it is created and opened before any data is
+** is not yet open, it is created and opened before any data is
** written out.
**
** Once the lock has been upgraded and, if necessary, the file opened,
@@ -60505,7 +56035,7 @@ static int syncJournal(Pager *pPager, int newHdr){
** in Pager.dbFileVers[] is updated to match the new value stored in
** the database file.
**
-** If everything is successful, SQLITE_OK is returned. If an IO error
+** If everything is successful, SQLITE_OK is returned. If an IO error
** occurs, an IO error code is returned. Or, if the EXCLUSIVE lock cannot
** be obtained, SQLITE_BUSY is returned.
*/
@@ -60531,7 +56061,7 @@ static int pager_write_pagelist(Pager *pPager, PgHdr *pList){
** file size will be.
*/
assert( rc!=SQLITE_OK || isOpen(pPager->fd) );
- if( rc==SQLITE_OK
+ if( rc==SQLITE_OK
&& pPager->dbHintSizedbSize
&& (pList->pDirty || pList->pgno>pPager->dbHintSize)
){
@@ -60553,20 +56083,19 @@ static int pager_write_pagelist(Pager *pPager, PgHdr *pList){
*/
if( pgno<=pPager->dbSize && 0==(pList->flags&PGHDR_DONT_WRITE) ){
i64 offset = (pgno-1)*(i64)pPager->pageSize; /* Offset to write */
- char *pData; /* Data to write */
+ char *pData; /* Data to write */
assert( (pList->flags&PGHDR_NEED_SYNC)==0 );
if( pList->pgno==1 ) pager_write_changecounter(pList);
- /* Encode the database */
- CODEC2(pPager, pList->pData, pgno, 6, return SQLITE_NOMEM_BKPT, pData);
+ pData = pList->pData;
/* Write out the page data. */
rc = sqlite3OsWrite(pPager->fd, pData, pPager->pageSize, offset);
/* If page 1 was just written, update Pager.dbFileVers to match
- ** the value now stored in the database file. If writing this
- ** page caused the database file to grow, update dbFileSize.
+ ** the value now stored in the database file. If writing this
+ ** page caused the database file to grow, update dbFileSize.
*/
if( pgno==1 ){
memcpy(&pPager->dbFileVers, &pData[24], sizeof(pPager->dbFileVers));
@@ -60594,18 +56123,18 @@ static int pager_write_pagelist(Pager *pPager, PgHdr *pList){
}
/*
-** Ensure that the sub-journal file is open. If it is already open, this
+** Ensure that the sub-journal file is open. If it is already open, this
** function is a no-op.
**
-** SQLITE_OK is returned if everything goes according to plan. An
-** SQLITE_IOERR_XXX error code is returned if a call to sqlite3OsOpen()
+** SQLITE_OK is returned if everything goes according to plan. An
+** SQLITE_IOERR_XXX error code is returned if a call to sqlite3OsOpen()
** fails.
*/
static int openSubJournal(Pager *pPager){
int rc = SQLITE_OK;
if( !isOpen(pPager->sjfd) ){
- const int flags = SQLITE_OPEN_SUBJOURNAL | SQLITE_OPEN_READWRITE
- | SQLITE_OPEN_CREATE | SQLITE_OPEN_EXCLUSIVE
+ const int flags = SQLITE_OPEN_SUBJOURNAL | SQLITE_OPEN_READWRITE
+ | SQLITE_OPEN_CREATE | SQLITE_OPEN_EXCLUSIVE
| SQLITE_OPEN_DELETEONCLOSE;
int nStmtSpill = sqlite3Config.nStmtSpill;
if( pPager->journalMode==PAGER_JOURNALMODE_MEMORY || pPager->subjInMemory ){
@@ -60617,13 +56146,13 @@ static int openSubJournal(Pager *pPager){
}
/*
-** Append a record of the current state of page pPg to the sub-journal.
+** Append a record of the current state of page pPg to the sub-journal.
**
** If successful, set the bit corresponding to pPg->pgno in the bitvecs
** for all open savepoints before returning.
**
** This function returns SQLITE_OK if everything is successful, an IO
-** error code if the attempt to write to the sub-journal fails, or
+** error code if the attempt to write to the sub-journal fails, or
** SQLITE_NOMEM if a malloc fails while setting a bit in a savepoint
** bitvec.
*/
@@ -60636,9 +56165,9 @@ static int subjournalPage(PgHdr *pPg){
assert( pPager->useJournal );
assert( isOpen(pPager->jfd) || pagerUseWal(pPager) );
assert( isOpen(pPager->sjfd) || pPager->nSubRec==0 );
- assert( pagerUseWal(pPager)
- || pageInJournal(pPager, pPg)
- || pPg->pgno>pPager->dbOrigSize
+ assert( pagerUseWal(pPager)
+ || pageInJournal(pPager, pPg)
+ || pPg->pgno>pPager->dbOrigSize
);
rc = openSubJournal(pPager);
@@ -60648,12 +56177,6 @@ static int subjournalPage(PgHdr *pPg){
void *pData = pPg->pData;
i64 offset = (i64)pPager->nSubRec*(4+pPager->pageSize);
char *pData2;
-
-#if SQLITE_HAS_CODEC
- if( !pPager->subjInMemory ){
- CODEC2(pPager, pData, pPg->pgno, 7, return SQLITE_NOMEM_BKPT, pData2);
- }else
-#endif
pData2 = pData;
PAGERTRACE(("STMT-JOURNAL %d page %d\n", PAGERID(pPager), pPg->pgno));
rc = write32bits(pPager->sjfd, offset, pPg->pgno);
@@ -60681,14 +56204,14 @@ static int subjournalPageIfRequired(PgHdr *pPg){
** This function is called by the pcache layer when it has reached some
** soft memory limit. The first argument is a pointer to a Pager object
** (cast as a void*). The pager is always 'purgeable' (not an in-memory
-** database). The second argument is a reference to a page that is
+** database). The second argument is a reference to a page that is
** currently dirty but has no outstanding references. The page
-** is always associated with the Pager object passed as the first
+** is always associated with the Pager object passed as the first
** argument.
**
** The job of this function is to make pPg clean by writing its contents
** out to the database file, if possible. This may involve syncing the
-** journal file.
+** journal file.
**
** If successful, sqlite3PcacheMakeClean() is called on the page and
** SQLITE_OK returned. If an IO error occurs while trying to make the
@@ -60713,7 +56236,7 @@ static int pagerStress(void *p, PgHdr *pPg){
** a rollback or by user request, respectively.
**
** Spilling is also prohibited when in an error state since that could
- ** lead to database corruption. In the current implementation it
+ ** lead to database corruption. In the current implementation it
** is impossible for sqlite3PcacheFetch() to be called with createFlag==3
** while in the error state, hence it is impossible for this routine to
** be called in the error state. Nevertheless, we include a NEVER()
@@ -60734,26 +56257,26 @@ static int pagerStress(void *p, PgHdr *pPg){
pPg->pDirty = 0;
if( pagerUseWal(pPager) ){
/* Write a single frame for this page to the log. */
- rc = subjournalPageIfRequired(pPg);
+ rc = subjournalPageIfRequired(pPg);
if( rc==SQLITE_OK ){
rc = pagerWalFrames(pPager, pPg, 0, 0);
}
}else{
-
+
#ifdef SQLITE_ENABLE_BATCH_ATOMIC_WRITE
if( pPager->tempFile==0 ){
rc = sqlite3JournalCreate(pPager->jfd);
if( rc!=SQLITE_OK ) return pager_error(pPager, rc);
}
#endif
-
+
/* Sync the journal file if required. */
- if( pPg->flags&PGHDR_NEED_SYNC
+ if( pPg->flags&PGHDR_NEED_SYNC
|| pPager->eState==PAGER_WRITER_CACHEMOD
){
rc = syncJournal(pPager, 1);
}
-
+
/* Write the contents of the page out to the database file. */
if( rc==SQLITE_OK ){
assert( (pPg->flags&PGHDR_NEED_SYNC)==0 );
@@ -60767,7 +56290,7 @@ static int pagerStress(void *p, PgHdr *pPg){
sqlite3PcacheMakeClean(pPg);
}
- return pager_error(pPager, rc);
+ return pager_error(pPager, rc);
}
/*
@@ -60798,8 +56321,8 @@ SQLITE_PRIVATE int sqlite3PagerFlush(Pager *pPager){
** The zFilename argument is the path to the database file to open.
** If zFilename is NULL then a randomly-named temporary file is created
** and used as the file to be cached. Temporary files are be deleted
-** automatically when they are closed. If zFilename is ":memory:" then
-** all information is held in cache. It is never written to disk.
+** automatically when they are closed. If zFilename is ":memory:" then
+** all information is held in cache. It is never written to disk.
** This can be used to implement an in-memory database.
**
** The nExtra parameter specifies the number of bytes of space allocated
@@ -60813,13 +56336,13 @@ SQLITE_PRIVATE int sqlite3PagerFlush(Pager *pPager){
** of the PAGER_* flags.
**
** The vfsFlags parameter is a bitmask to pass to the flags parameter
-** of the xOpen() method of the supplied VFS when opening files.
+** of the xOpen() method of the supplied VFS when opening files.
**
-** If the pager object is allocated and the specified file opened
+** If the pager object is allocated and the specified file opened
** successfully, SQLITE_OK is returned and *ppPager set to point to
** the new pager object. If an error occurs, *ppPager is set to NULL
** and error code returned. This function may return SQLITE_NOMEM
-** (sqlite3Malloc() is used to allocate memory), SQLITE_CANTOPEN or
+** (sqlite3Malloc() is used to allocate memory), SQLITE_CANTOPEN or
** various SQLITE_IO_XXX errors.
*/
SQLITE_PRIVATE int sqlite3PagerOpen(
@@ -60877,12 +56400,6 @@ SQLITE_PRIVATE int sqlite3PagerOpen(
*/
if( zFilename && zFilename[0] ){
const char *z;
- if( (vfsFlags & SQLITE_OPEN_NOFOLLOW)!=0 ){
- int isLink = 0;
- int rc = sqlite3OsAccess(pVfs, zFilename, SQLITE_ACCESS_SYMLINK, &isLink);
- if( rc==SQLITE_OK && isLink ) rc = SQLITE_CANTOPEN_SYMLINK;
- if( rc ) return rc;
- }
nPathname = pVfs->mxPathname+1;
zPathname = sqlite3DbMallocRaw(0, nPathname*2);
if( zPathname==0 ){
@@ -60890,6 +56407,15 @@ SQLITE_PRIVATE int sqlite3PagerOpen(
}
zPathname[0] = 0; /* Make sure initialized even if FullPathname() fails */
rc = sqlite3OsFullPathname(pVfs, zFilename, nPathname, zPathname);
+ if( rc!=SQLITE_OK ){
+ if( rc==SQLITE_OK_SYMLINK ){
+ if( vfsFlags & SQLITE_OPEN_NOFOLLOW ){
+ rc = SQLITE_CANTOPEN_SYMLINK;
+ }else{
+ rc = SQLITE_OK;
+ }
+ }
+ }
nPathname = sqlite3Strlen30(zPathname);
z = zUri = &zFilename[sqlite3Strlen30(zFilename)+1];
while( *z ){
@@ -60897,7 +56423,7 @@ SQLITE_PRIVATE int sqlite3PagerOpen(
z += strlen(z)+1;
nUri++;
}
- nUriByte = (int)(&z[2] - zUri);
+ nUriByte = (int)(&z[1] - zUri);
assert( nUriByte>=1 );
if( rc==SQLITE_OK && nPathname+8>pVfs->mxPathname ){
/* This branch is taken when the journal path required by
@@ -60915,7 +56441,7 @@ SQLITE_PRIVATE int sqlite3PagerOpen(
}
/* Allocate memory for the Pager structure, PCache object, the
- ** three file descriptors, the database file name and the journal
+ ** three file descriptors, the database file name and the journal
** file name. The layout in memory is as follows:
**
** Pager object (sizeof(Pager) bytes)
@@ -60923,53 +56449,111 @@ SQLITE_PRIVATE int sqlite3PagerOpen(
** Database file handle (pVfs->szOsFile bytes)
** Sub-journal file handle (journalFileSize bytes)
** Main journal file handle (journalFileSize bytes)
+ ** Ptr back to the Pager (sizeof(Pager*) bytes)
+ ** \0\0\0\0 database prefix (4 bytes)
** Database file name (nPathname+1 bytes)
- ** Journal file name (nPathname+8+1 bytes)
+ ** URI query parameters (nUriByte bytes)
+ ** Journal filename (nPathname+8+1 bytes)
+ ** WAL filename (nPathname+4+1 bytes)
+ ** \0\0\0 terminator (3 bytes)
+ **
+ ** Some 3rd-party software, over which we have no control, depends on
+ ** the specific order of the filenames and the \0 separators between them
+ ** so that it can (for example) find the database filename given the WAL
+ ** filename without using the sqlite3_filename_database() API. This is a
+ ** misuse of SQLite and a bug in the 3rd-party software, but the 3rd-party
+ ** software is in widespread use, so we try to avoid changing the filename
+ ** order and formatting if possible. In particular, the details of the
+ ** filename format expected by 3rd-party software should be as follows:
+ **
+ ** - Main Database Path
+ ** - \0
+ ** - Multiple URI components consisting of:
+ ** - Key
+ ** - \0
+ ** - Value
+ ** - \0
+ ** - \0
+ ** - Journal Path
+ ** - \0
+ ** - WAL Path (zWALName)
+ ** - \0
+ **
+ ** The sqlite3_create_filename() interface and the databaseFilename() utility
+ ** that is used by sqlite3_filename_database() and kin also depend on the
+ ** specific formatting and order of the various filenames, so if the format
+ ** changes here, be sure to change it there as well.
*/
pPtr = (u8 *)sqlite3MallocZero(
- ROUND8(sizeof(*pPager)) + /* Pager structure */
- ROUND8(pcacheSize) + /* PCache object */
- ROUND8(pVfs->szOsFile) + /* The main db file */
- journalFileSize * 2 + /* The two journal files */
- nPathname + 1 + nUriByte + /* zFilename */
- nPathname + 8 + 2 /* zJournal */
+ ROUND8(sizeof(*pPager)) + /* Pager structure */
+ ROUND8(pcacheSize) + /* PCache object */
+ ROUND8(pVfs->szOsFile) + /* The main db file */
+ journalFileSize * 2 + /* The two journal files */
+ sizeof(pPager) + /* Space to hold a pointer */
+ 4 + /* Database prefix */
+ nPathname + 1 + /* database filename */
+ nUriByte + /* query parameters */
+ nPathname + 8 + 1 + /* Journal filename */
#ifndef SQLITE_OMIT_WAL
- + nPathname + 4 + 2 /* zWal */
+ nPathname + 4 + 1 + /* WAL filename */
#endif
+ 3 /* Terminator */
);
assert( EIGHT_BYTE_ALIGNMENT(SQLITE_INT_TO_PTR(journalFileSize)) );
if( !pPtr ){
sqlite3DbFree(0, zPathname);
return SQLITE_NOMEM_BKPT;
}
- pPager = (Pager*)(pPtr);
- pPager->pPCache = (PCache*)(pPtr += ROUND8(sizeof(*pPager)));
- pPager->fd = (sqlite3_file*)(pPtr += ROUND8(pcacheSize));
- pPager->sjfd = (sqlite3_file*)(pPtr += ROUND8(pVfs->szOsFile));
- pPager->jfd = (sqlite3_file*)(pPtr += journalFileSize);
- pPager->zFilename = (char*)(pPtr += journalFileSize);
+ pPager = (Pager*)pPtr; pPtr += ROUND8(sizeof(*pPager));
+ pPager->pPCache = (PCache*)pPtr; pPtr += ROUND8(pcacheSize);
+ pPager->fd = (sqlite3_file*)pPtr; pPtr += ROUND8(pVfs->szOsFile);
+ pPager->sjfd = (sqlite3_file*)pPtr; pPtr += journalFileSize;
+ pPager->jfd = (sqlite3_file*)pPtr; pPtr += journalFileSize;
assert( EIGHT_BYTE_ALIGNMENT(pPager->jfd) );
+ memcpy(pPtr, &pPager, sizeof(pPager)); pPtr += sizeof(pPager);
- /* Fill in the Pager.zFilename and Pager.zJournal buffers, if required. */
- if( zPathname ){
- assert( nPathname>0 );
- memcpy(pPager->zFilename, zPathname, nPathname);
- if( nUri ) memcpy(&pPager->zFilename[nPathname+1], zUri, nUriByte);
- pPager->zJournal = (char*)(pPtr += nPathname + 1 + nUriByte);
- memcpy(pPager->zJournal, zPathname, nPathname);
- memcpy(&pPager->zJournal[nPathname], "-journal", 8);
- sqlite3FileSuffix3(pPager->zFilename, pPager->zJournal);
-#ifndef SQLITE_OMIT_WAL
- pPager->zWal = (char*)(pPtr += nPathname + 8 + 2);
- memcpy(pPager->zWal, zPathname, nPathname);
- memcpy(&pPager->zWal[nPathname], "-wal", 4);
- sqlite3FileSuffix3(pPager->zFilename, pPager->zWal);
- assert( sqlite3UriCount(pPager->zWal)==0 );
-#endif
- assert( sqlite3UriCount(pPager->zFilename)==nUri );
- assert( sqlite3UriCount(pPager->zJournal)==0 );
- sqlite3DbFree(0, zPathname);
+ /* Fill in the Pager.zFilename and pPager.zQueryParam fields */
+ pPtr += 4; /* Skip zero prefix */
+ pPager->zFilename = (char*)pPtr;
+ if( nPathname>0 ){
+ memcpy(pPtr, zPathname, nPathname); pPtr += nPathname + 1;
+ if( zUri ){
+ memcpy(pPtr, zUri, nUriByte); pPtr += nUriByte;
+ }else{
+ pPtr++;
+ }
}
+
+
+ /* Fill in Pager.zJournal */
+ if( nPathname>0 ){
+ pPager->zJournal = (char*)pPtr;
+ memcpy(pPtr, zPathname, nPathname); pPtr += nPathname;
+ memcpy(pPtr, "-journal",8); pPtr += 8 + 1;
+#ifdef SQLITE_ENABLE_8_3_NAMES
+ sqlite3FileSuffix3(zFilename,pPager->zJournal);
+ pPtr = (u8*)(pPager->zJournal + sqlite3Strlen30(pPager->zJournal)+1);
+#endif
+ }else{
+ pPager->zJournal = 0;
+ }
+
+#ifndef SQLITE_OMIT_WAL
+ /* Fill in Pager.zWal */
+ if( nPathname>0 ){
+ pPager->zWal = (char*)pPtr;
+ memcpy(pPtr, zPathname, nPathname); pPtr += nPathname;
+ memcpy(pPtr, "-wal", 4); pPtr += 4 + 1;
+#ifdef SQLITE_ENABLE_8_3_NAMES
+ sqlite3FileSuffix3(zFilename, pPager->zWal);
+ pPtr = (u8*)(pPager->zWal + sqlite3Strlen30(pPager->zWal)+1);
+#endif
+ }else{
+ pPager->zWal = 0;
+ }
+#endif
+
+ if( nPathname ) sqlite3DbFree(0, zPathname);
pPager->pVfs = pVfs;
pPager->vfsFlags = vfsFlags;
@@ -61018,9 +56602,9 @@ SQLITE_PRIVATE int sqlite3PagerOpen(
}
#endif
}
- pPager->noLock = sqlite3_uri_boolean(zFilename, "nolock", 0);
+ pPager->noLock = sqlite3_uri_boolean(pPager->zFilename, "nolock", 0);
if( (iDc & SQLITE_IOCAP_IMMUTABLE)!=0
- || sqlite3_uri_boolean(zFilename, "immutable", 0) ){
+ || sqlite3_uri_boolean(pPager->zFilename, "immutable", 0) ){
vfsFlags |= SQLITE_OPEN_READONLY;
goto act_like_temp_file;
}
@@ -61035,7 +56619,7 @@ SQLITE_PRIVATE int sqlite3PagerOpen(
** disk and uses an in-memory rollback journal.
**
** This branch also runs for files marked as immutable.
- */
+ */
act_like_temp_file:
tempFile = 1;
pPager->eState = PAGER_READER; /* Pretend we already have a lock */
@@ -61044,7 +56628,7 @@ act_like_temp_file:
readOnly = (vfsFlags&SQLITE_OPEN_READONLY);
}
- /* The following call to PagerSetPagesize() serves to set the value of
+ /* The following call to PagerSetPagesize() serves to set the value of
** Pager.pageSize and to allocate the Pager.pTmpSpace buffer.
*/
if( rc==SQLITE_OK ){
@@ -61084,10 +56668,10 @@ act_like_temp_file:
/* pPager->state = PAGER_UNLOCK; */
/* pPager->errMask = 0; */
pPager->tempFile = (u8)tempFile;
- assert( tempFile==PAGER_LOCKINGMODE_NORMAL
+ assert( tempFile==PAGER_LOCKINGMODE_NORMAL
|| tempFile==PAGER_LOCKINGMODE_EXCLUSIVE );
assert( PAGER_LOCKINGMODE_EXCLUSIVE==1 );
- pPager->exclusiveMode = (u8)tempFile;
+ pPager->exclusiveMode = (u8)tempFile;
pPager->changeCountDone = pPager->tempFile;
pPager->memDb = (u8)memDb;
pPager->readOnly = (u8)readOnly;
@@ -61127,12 +56711,25 @@ act_like_temp_file:
return SQLITE_OK;
}
+/*
+** Return the sqlite3_file for the main database given the name
+** of the corresonding WAL or Journal name as passed into
+** xOpen.
+*/
+SQLITE_API sqlite3_file *sqlite3_database_file_object(const char *zName){
+ Pager *pPager;
+ while( zName[-1]!=0 || zName[-2]!=0 || zName[-3]!=0 || zName[-4]!=0 ){
+ zName--;
+ }
+ pPager = *(Pager**)(zName - 4 - sizeof(Pager*));
+ return pPager->fd;
+}
/*
** This function is called after transitioning from PAGER_UNLOCK to
** PAGER_SHARED state. It tests if there is a hot journal present in
-** the file-system for the given pager. A hot journal is one that
+** the file-system for the given pager. A hot journal is one that
** needs to be played back. According to this function, a hot-journal
** file exists if the following criteria are met:
**
@@ -61147,14 +56744,14 @@ act_like_temp_file:
** just deleted using OsDelete, *pExists is set to 0 and SQLITE_OK
** is returned.
**
-** This routine does not check if there is a master journal filename
-** at the end of the file. If there is, and that master journal file
+** This routine does not check if there is a super-journal filename
+** at the end of the file. If there is, and that super-journal file
** does not exist, then the journal file is not really hot. In this
** case this routine will return a false-positive. The pager_playback()
-** routine will discover that the journal file is not really hot and
-** will not roll it back.
+** routine will discover that the journal file is not really hot and
+** will not roll it back.
**
-** If a hot-journal file is found to exist, *pExists is set to 1 and
+** If a hot-journal file is found to exist, *pExists is set to 1 and
** SQLITE_OK returned. If no hot-journal file is present, *pExists is
** set to 0 and SQLITE_OK returned. If an IO error occurs while trying
** to determine whether or not a hot-journal file exists, the IO error
@@ -61182,7 +56779,7 @@ static int hasHotJournal(Pager *pPager, int *pExists){
int locked = 0; /* True if some process holds a RESERVED lock */
/* Race condition here: Another process might have been holding the
- ** the RESERVED lock and have a journal open at the sqlite3OsAccess()
+ ** the RESERVED lock and have a journal open at the sqlite3OsAccess()
** call above, but then delete the journal and drop the lock before
** we get to the following sqlite3OsCheckReservedLock() call. If that
** is the case, this routine might think there is a hot journal when
@@ -61215,7 +56812,7 @@ static int hasHotJournal(Pager *pPager, int *pExists){
/* The journal file exists and no other connection has a reserved
** or greater lock on the database file. Now check that there is
** at least one non-zero bytes at the start of the journal file.
- ** If there is, then we consider this journal to be hot. If not,
+ ** If there is, then we consider this journal to be hot. If not,
** it can be ignored.
*/
if( !jrnlOpen ){
@@ -61265,7 +56862,7 @@ static int hasHotJournal(Pager *pPager, int *pExists){
** on the database file), then an attempt is made to obtain a
** SHARED lock on the database file. Immediately after obtaining
** the SHARED lock, the file-system is checked for a hot-journal,
-** which is played back if present. Following any hot-journal
+** which is played back if present. Following any hot-journal
** rollback, the contents of the cache are validated by checking
** the 'change-counter' field of the database file header and
** discarded if they are found to be invalid.
@@ -61276,8 +56873,8 @@ static int hasHotJournal(Pager *pPager, int *pExists){
** the contents of the page cache and rolling back any open journal
** file.
**
-** If everything is successful, SQLITE_OK is returned. If an IO error
-** occurs while locking the database, checking for a hot-journal file or
+** If everything is successful, SQLITE_OK is returned. If an IO error
+** occurs while locking the database, checking for a hot-journal file or
** rolling back a journal file, the IO error code is returned.
*/
SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){
@@ -61285,7 +56882,7 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){
/* This routine is only called from b-tree and only when there are no
** outstanding pages. This implies that the pager state should either
- ** be OPEN or READER. READER is only possible if the pager is or was in
+ ** be OPEN or READER. READER is only possible if the pager is or was in
** exclusive access mode. */
assert( sqlite3PcacheRefCount(pPager->pPCache)==0 );
assert( assert_pager_state(pPager) );
@@ -61323,12 +56920,12 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){
** important that a RESERVED lock is not obtained on the way to the
** EXCLUSIVE lock. If it were, another process might open the
** database file, detect the RESERVED lock, and conclude that the
- ** database is safe to read while this process is still rolling the
+ ** database is safe to read while this process is still rolling the
** hot-journal back.
- **
+ **
** Because the intermediate RESERVED lock is not requested, any
- ** other process attempting to access the database file will get to
- ** this point in the code and fail to obtain its own EXCLUSIVE lock
+ ** other process attempting to access the database file will get to
+ ** this point in the code and fail to obtain its own EXCLUSIVE lock
** on the database file.
**
** Unless the pager is in locking_mode=exclusive mode, the lock is
@@ -61338,17 +56935,17 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){
if( rc!=SQLITE_OK ){
goto failed;
}
-
- /* If it is not already open and the file exists on disk, open the
- ** journal for read/write access. Write access is required because
- ** in exclusive-access mode the file descriptor will be kept open
- ** and possibly used for a transaction later on. Also, write-access
- ** is usually required to finalize the journal in journal_mode=persist
+
+ /* If it is not already open and the file exists on disk, open the
+ ** journal for read/write access. Write access is required because
+ ** in exclusive-access mode the file descriptor will be kept open
+ ** and possibly used for a transaction later on. Also, write-access
+ ** is usually required to finalize the journal in journal_mode=persist
** mode (and also for journal_mode=truncate on some systems).
**
- ** If the journal does not exist, it usually means that some
- ** other connection managed to get in and roll it back before
- ** this connection obtained the exclusive lock above. Or, it
+ ** If the journal does not exist, it usually means that some
+ ** other connection managed to get in and roll it back before
+ ** this connection obtained the exclusive lock above. Or, it
** may mean that the pager was in the error-state when this
** function was called and the journal file does not exist.
*/
@@ -61369,7 +56966,7 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){
}
}
}
-
+
/* Playback and delete the journal. Drop the database write
** lock and reacquire the read lock. Purge the cache before
** playing back the hot-journal so that we don't end up with
@@ -61394,8 +56991,8 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){
** or roll back a hot-journal while holding an EXCLUSIVE lock. The
** pager_unlock() routine will be called before returning to unlock
** the file. If the unlock attempt fails, then Pager.eLock must be
- ** set to UNKNOWN_LOCK (see the comment above the #define for
- ** UNKNOWN_LOCK above for an explanation).
+ ** set to UNKNOWN_LOCK (see the comment above the #define for
+ ** UNKNOWN_LOCK above for an explanation).
**
** In order to get pager_unlock() to do this, set Pager.eState to
** PAGER_ERROR now. This is not actually counted as a transition
@@ -61403,7 +57000,7 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){
** since we know that the same call to pager_unlock() will very
** shortly transition the pager object to the OPEN state. Calling
** assert_pager_state() would fail now, as it should not be possible
- ** to be in ERROR state when there are zero outstanding page
+ ** to be in ERROR state when there are zero outstanding page
** references.
*/
pager_error(pPager, rc);
@@ -61428,8 +57025,8 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){
** a 32-bit counter that is incremented with each change. The
** other bytes change randomly with each file change when
** a codec is in use.
- **
- ** There is a vanishingly small chance that a change will not be
+ **
+ ** There is a vanishingly small chance that a change will not be
** detected. The chance of an undetected change is so small that
** it can be neglected.
*/
@@ -61496,7 +57093,7 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){
** Except, in locking_mode=EXCLUSIVE when there is nothing to in
** the rollback journal, the unlock is not performed and there is
** nothing to rollback, so this routine is a no-op.
-*/
+*/
static void pagerUnlockIfUnused(Pager *pPager){
if( sqlite3PcacheRefCount(pPager->pPCache)==0 ){
assert( pPager->nMmapOut==0 ); /* because page1 is never memory mapped */
@@ -61506,7 +57103,7 @@ static void pagerUnlockIfUnused(Pager *pPager){
/*
** The page getter methods each try to acquire a reference to a
-** page with page number pgno. If the requested reference is
+** page with page number pgno. If the requested reference is
** successfully obtained, it is copied to *ppPage and SQLITE_OK returned.
**
** There are different implementations of the getter method depending
@@ -61516,22 +57113,22 @@ static void pagerUnlockIfUnused(Pager *pPager){
** getPageError() -- Used if the pager is in an error state
** getPageMmap() -- Used if memory-mapped I/O is enabled
**
-** If the requested page is already in the cache, it is returned.
+** If the requested page is already in the cache, it is returned.
** Otherwise, a new page object is allocated and populated with data
** read from the database file. In some cases, the pcache module may
** choose not to allocate a new page object and may reuse an existing
** object with no outstanding references.
**
-** The extra data appended to a page is always initialized to zeros the
-** first time a page is loaded into memory. If the page requested is
+** The extra data appended to a page is always initialized to zeros the
+** first time a page is loaded into memory. If the page requested is
** already in the cache when this function is called, then the extra
** data is left as it was when the page object was last used.
**
-** If the database image is smaller than the requested page or if
-** the flags parameter contains the PAGER_GET_NOCONTENT bit and the
-** requested page is not already stored in the cache, then no
-** actual disk read occurs. In this case the memory image of the
-** page is initialized to all zeros.
+** If the database image is smaller than the requested page or if
+** the flags parameter contains the PAGER_GET_NOCONTENT bit and the
+** requested page is not already stored in the cache, then no
+** actual disk read occurs. In this case the memory image of the
+** page is initialized to all zeros.
**
** If PAGER_GET_NOCONTENT is true, it means that we do not care about
** the contents of the page. This occurs in two scenarios:
@@ -61597,18 +57194,18 @@ static int getPageNormal(
if( pPg->pPager && !noContent ){
/* In this case the pcache already contains an initialized copy of
** the page. Return without further ado. */
- assert( pgno<=PAGER_MAX_PGNO && pgno!=PAGER_MJ_PGNO(pPager) );
+ assert( pgno!=PAGER_MJ_PGNO(pPager) );
pPager->aStat[PAGER_STAT_HIT]++;
return SQLITE_OK;
}else{
- /* The pager cache has created a new page. Its content needs to
+ /* The pager cache has created a new page. Its content needs to
** be initialized. But first some error checks:
**
- ** (1) The maximum page number is 2^31
+ ** (*) obsolete. Was: maximum page number is 2^31
** (2) Never try to fetch the locking page
*/
- if( pgno>PAGER_MAX_PGNO || pgno==PAGER_MJ_PGNO(pPager) ){
+ if( pgno==PAGER_MJ_PGNO(pPager) ){
rc = SQLITE_CORRUPT_BKPT;
goto pager_acquire_err;
}
@@ -61623,9 +57220,9 @@ static int getPageNormal(
}
if( noContent ){
/* Failure to set the bits in the InJournal bit-vectors is benign.
- ** It merely means that we might do some extra work to journal a
- ** page that does not need to be journaled. Nevertheless, be sure
- ** to test the case where a malloc error occurs while trying to set
+ ** It merely means that we might do some extra work to journal a
+ ** page that does not need to be journaled. Nevertheless, be sure
+ ** to test the case where a malloc error occurs while trying to set
** a bit in a bit vector.
*/
sqlite3BeginBenignMalloc();
@@ -61675,16 +57272,13 @@ static int getPageMMap(
/* It is acceptable to use a read-only (mmap) page for any page except
** page 1 if there is no write-transaction open or the ACQUIRE_READONLY
- ** flag was specified by the caller. And so long as the db is not a
+ ** flag was specified by the caller. And so long as the db is not a
** temporary or in-memory database. */
const int bMmapOk = (pgno>1
&& (pPager->eState==PAGER_READER || (flags & PAGER_GET_READONLY))
);
assert( USEFETCH(pPager) );
-#ifdef SQLITE_HAS_CODEC
- assert( pPager->xCodec==0 );
-#endif
/* Optimization note: Adding the "pgno<=1" term before "pgno==0" here
** allows the compiler optimizer to reuse the results of the "pgno>1"
@@ -61707,7 +57301,7 @@ static int getPageMMap(
}
if( bMmapOk && iFrame==0 ){
void *pData = 0;
- rc = sqlite3OsFetch(pPager->fd,
+ rc = sqlite3OsFetch(pPager->fd,
(i64)(pgno-1) * pPager->pageSize, pPager->pageSize, &pData
);
if( rc==SQLITE_OK && pData ){
@@ -61763,12 +57357,12 @@ SQLITE_PRIVATE int sqlite3PagerGet(
/*
** Acquire a page if it is already in the in-memory cache. Do
** not read the page from disk. Return a pointer to the page,
-** or 0 if the page is not in cache.
+** or 0 if the page is not in cache.
**
** See also sqlite3PagerGet(). The difference between this routine
** and sqlite3PagerGet() is that _get() will go to the disk and read
** in the page if the page is not already in cache. This routine
-** returns NULL if the page is not in cache or if a disk I/O error
+** returns NULL if the page is not in cache or if a disk I/O error
** has ever happened.
*/
SQLITE_PRIVATE DbPage *sqlite3PagerLookup(Pager *pPager, Pgno pgno){
@@ -61815,31 +57409,30 @@ SQLITE_PRIVATE void sqlite3PagerUnrefPageOne(DbPage *pPg){
assert( pPg->pgno==1 );
assert( (pPg->flags & PGHDR_MMAP)==0 ); /* Page1 is never memory mapped */
pPager = pPg->pPager;
- sqlite3PagerResetLockTimeout(pPager);
sqlite3PcacheRelease(pPg);
pagerUnlockIfUnused(pPager);
}
/*
** This function is called at the start of every write transaction.
-** There must already be a RESERVED or EXCLUSIVE lock on the database
+** There must already be a RESERVED or EXCLUSIVE lock on the database
** file when this routine is called.
**
** Open the journal file for pager pPager and write a journal header
** to the start of it. If there are active savepoints, open the sub-journal
-** as well. This function is only used when the journal file is being
-** opened to write a rollback log for a transaction. It is not used
+** as well. This function is only used when the journal file is being
+** opened to write a rollback log for a transaction. It is not used
** when opening a hot journal file to roll it back.
**
** If the journal file is already open (as it may be in exclusive mode),
** then this function just writes a journal header to the start of the
-** already open file.
+** already open file.
**
** Whether or not the journal file is opened by this function, the
** Pager.pInJournal bitvec structure is allocated.
**
-** Return SQLITE_OK if everything is successful. Otherwise, return
-** SQLITE_NOMEM if the attempt to allocate Pager.pInJournal fails, or
+** Return SQLITE_OK if everything is successful. Otherwise, return
+** SQLITE_NOMEM if the attempt to allocate Pager.pInJournal fails, or
** an IO error code if opening or writing the journal file fails.
*/
static int pager_open_journal(Pager *pPager){
@@ -61849,7 +57442,7 @@ static int pager_open_journal(Pager *pPager){
assert( pPager->eState==PAGER_WRITER_LOCKED );
assert( assert_pager_state(pPager) );
assert( pPager->pInJournal==0 );
-
+
/* If already in the error state, this function is a no-op. But on
** the other hand, this routine is never called if we are already in
** an error state. */
@@ -61860,7 +57453,7 @@ static int pager_open_journal(Pager *pPager){
if( pPager->pInJournal==0 ){
return SQLITE_NOMEM_BKPT;
}
-
+
/* Open the journal file if it is not already open. */
if( !isOpen(pPager->jfd) ){
if( pPager->journalMode==PAGER_JOURNALMODE_MEMORY ){
@@ -61876,7 +57469,7 @@ static int pager_open_journal(Pager *pPager){
flags |= SQLITE_OPEN_MAIN_JOURNAL;
nSpill = jrnlBufferSize(pPager);
}
-
+
/* Verify that the database still has the same name as it did when
** it was originally opened. */
rc = databaseIsUnmoved(pPager);
@@ -61888,16 +57481,16 @@ static int pager_open_journal(Pager *pPager){
}
assert( rc!=SQLITE_OK || isOpen(pPager->jfd) );
}
-
-
- /* Write the first journal header to the journal file and open
+
+
+ /* Write the first journal header to the journal file and open
** the sub-journal if necessary.
*/
if( rc==SQLITE_OK ){
/* TODO: Check if all of these are really required. */
pPager->nRec = 0;
pPager->journalOff = 0;
- pPager->setMaster = 0;
+ pPager->setSuper = 0;
pPager->journalHdr = 0;
rc = writeJournalHdr(pPager);
}
@@ -61915,12 +57508,12 @@ static int pager_open_journal(Pager *pPager){
}
/*
-** Begin a write-transaction on the specified pager object. If a
+** Begin a write-transaction on the specified pager object. If a
** write-transaction has already been opened, this function is a no-op.
**
** If the exFlag argument is false, then acquire at least a RESERVED
** lock on the database file. If exFlag is true, then acquire at least
-** an EXCLUSIVE lock. If such a lock is already held, no locking
+** an EXCLUSIVE lock. If such a lock is already held, no locking
** functions need be called.
**
** If the subjInMemory argument is non-zero, then any sub-journal opened
@@ -61928,7 +57521,7 @@ static int pager_open_journal(Pager *pPager){
** has no effect if the sub-journal is already opened (as it may be when
** running in exclusive mode) or if the transaction does not require a
** sub-journal. If the subjInMemory argument is zero, then any required
-** sub-journal is implemented in-memory if pPager is an in-memory database,
+** sub-journal is implemented in-memory if pPager is an in-memory database,
** or using a temporary file otherwise.
*/
SQLITE_PRIVATE int sqlite3PagerBegin(Pager *pPager, int exFlag, int subjInMemory){
@@ -61976,9 +57569,9 @@ SQLITE_PRIVATE int sqlite3PagerBegin(Pager *pPager, int exFlag, int subjInMemory
**
** WAL mode sets Pager.eState to PAGER_WRITER_LOCKED or CACHEMOD
** when it has an open transaction, but never to DBMOD or FINISHED.
- ** This is because in those states the code to roll back savepoint
- ** transactions may copy data from the sub-journal into the database
- ** file as well as into the page cache. Which would be incorrect in
+ ** This is because in those states the code to roll back savepoint
+ ** transactions may copy data from the sub-journal into the database
+ ** file as well as into the page cache. Which would be incorrect in
** WAL mode.
*/
pPager->eState = PAGER_WRITER_LOCKED;
@@ -62013,7 +57606,7 @@ static SQLITE_NOINLINE int pagerAddPageToRollbackJournal(PgHdr *pPg){
assert( pPg->pgno!=PAGER_MJ_PGNO(pPager) );
assert( pPager->journalHdr<=pPager->journalOff );
- CODEC2(pPager, pPg->pData, pPg->pgno, 7, return SQLITE_NOMEM_BKPT, pData2);
+ pData2 = pPg->pData;
cksum = pager_cksum(pPager, (u8*)pData2);
/* Even if an IO or diskfull error occurs while journalling the
@@ -62032,11 +57625,11 @@ static SQLITE_NOINLINE int pagerAddPageToRollbackJournal(PgHdr *pPg){
rc = write32bits(pPager->jfd, iOff+pPager->pageSize+4, cksum);
if( rc!=SQLITE_OK ) return rc;
- IOTRACE(("JOUT %p %d %lld %d\n", pPager, pPg->pgno,
+ IOTRACE(("JOUT %p %d %lld %d\n", pPager, pPg->pgno,
pPager->journalOff, pPager->pageSize));
PAGER_INCR(sqlite3_pager_writej_count);
PAGERTRACE(("JOURNAL %d page %d needSync=%d hash(%08x)\n",
- PAGERID(pPager), pPg->pgno,
+ PAGERID(pPager), pPg->pgno,
((pPg->flags&PGHDR_NEED_SYNC)?1:0), pager_pagehash(pPg)));
pPager->journalOff += 8 + pPager->pageSize;
@@ -62051,9 +57644,9 @@ static SQLITE_NOINLINE int pagerAddPageToRollbackJournal(PgHdr *pPg){
}
/*
-** Mark a single data page as writeable. The page is written into the
+** Mark a single data page as writeable. The page is written into the
** main journal or sub-journal as required. If the page is written into
-** one of the journals, the corresponding bit is set in the
+** one of the journals, the corresponding bit is set in the
** Pager.pInJournal bitvec and the PagerSavepoint.pInSavepoint bitvecs
** of any open savepoints as appropriate.
*/
@@ -62061,7 +57654,7 @@ static int pager_write(PgHdr *pPg){
Pager *pPager = pPg->pPager;
int rc = SQLITE_OK;
- /* This routine is not called unless a write-transaction has already
+ /* This routine is not called unless a write-transaction has already
** been started. The journal file may or may not be open at this point.
** It is never called in the ERROR state.
*/
@@ -62078,7 +57671,7 @@ static int pager_write(PgHdr *pPg){
** obtained the necessary locks to begin the write-transaction, but the
** rollback journal might not yet be open. Open it now if this is the case.
**
- ** This is done before calling sqlite3PcacheMakeDirty() on the page.
+ ** This is done before calling sqlite3PcacheMakeDirty() on the page.
** Otherwise, if it were done after calling sqlite3PcacheMakeDirty(), then
** an error might occur and the pager would end up in WRITER_LOCKED state
** with pages marked as dirty in the cache.
@@ -62123,7 +57716,7 @@ static int pager_write(PgHdr *pPg){
** PGHDR_WRITEABLE bit that indicates that the page can be safely modified.
*/
pPg->flags |= PGHDR_WRITEABLE;
-
+
/* If the statement journal is open and the page is not in it,
** then write the page into the statement journal.
*/
@@ -62207,7 +57800,7 @@ static SQLITE_NOINLINE int pagerWriteLargeSector(PgHdr *pPg){
}
}
- /* If the PGHDR_NEED_SYNC flag is set for any of the nPage pages
+ /* If the PGHDR_NEED_SYNC flag is set for any of the nPage pages
** starting at pg1, then it needs to be set for all of them. Because
** writing to any of these nPage pages may damage the others, the
** journal file must contain sync()ed copies of all of them
@@ -62230,9 +57823,9 @@ static SQLITE_NOINLINE int pagerWriteLargeSector(PgHdr *pPg){
}
/*
-** Mark a data page as writeable. This routine must be called before
-** making changes to a page. The caller must check the return value
-** of this function and be careful not to change any page data unless
+** Mark a data page as writeable. This routine must be called before
+** making changes to a page. The caller must check the return value
+** of this function and be careful not to change any page data unless
** this routine returns SQLITE_OK.
**
** The difference between this function and pager_write() is that this
@@ -62283,13 +57876,13 @@ SQLITE_PRIVATE int sqlite3PagerIswriteable(DbPage *pPg){
** on the given page is unused. The pager marks the page as clean so
** that it does not get written to disk.
**
-** Tests show that this optimization can quadruple the speed of large
+** Tests show that this optimization can quadruple the speed of large
** DELETE operations.
**
** This optimization cannot be used with a temp-file, as the page may
** have been dirty at the start of the transaction. In that case, if
-** memory pressure forces page pPg out of the cache, the data does need
-** to be written out to disk so that it may be read back in if the
+** memory pressure forces page pPg out of the cache, the data does need
+** to be written out to disk so that it may be read back in if the
** current transaction is rolled back.
*/
SQLITE_PRIVATE void sqlite3PagerDontWrite(PgHdr *pPg){
@@ -62305,17 +57898,17 @@ SQLITE_PRIVATE void sqlite3PagerDontWrite(PgHdr *pPg){
}
/*
-** This routine is called to increment the value of the database file
-** change-counter, stored as a 4-byte big-endian integer starting at
+** This routine is called to increment the value of the database file
+** change-counter, stored as a 4-byte big-endian integer starting at
** byte offset 24 of the pager file. The secondary change counter at
** 92 is also updated, as is the SQLite version number at offset 96.
**
** But this only happens if the pPager->changeCountDone flag is false.
** To avoid excess churning of page 1, the update only happens once.
-** See also the pager_write_changecounter() routine that does an
+** See also the pager_write_changecounter() routine that does an
** unconditional update of the change counters.
**
-** If the isDirectMode flag is zero, then this is done by calling
+** If the isDirectMode flag is zero, then this is done by calling
** sqlite3PagerWrite() on page 1, then modifying the contents of the
** page data. In this case the file will be updated when the current
** transaction is committed.
@@ -62323,7 +57916,7 @@ SQLITE_PRIVATE void sqlite3PagerDontWrite(PgHdr *pPg){
** The isDirectMode flag may only be non-zero if the library was compiled
** with the SQLITE_ENABLE_ATOMIC_WRITE macro defined. In this case,
** if isDirect is non-zero, then the database file is updated directly
-** by writing an updated version of page 1 using a call to the
+** by writing an updated version of page 1 using a call to the
** sqlite3OsWrite() function.
*/
static int pager_incr_changecounter(Pager *pPager, int isDirectMode){
@@ -62362,7 +57955,7 @@ static int pager_incr_changecounter(Pager *pPager, int isDirectMode){
assert( pPgHdr==0 || rc==SQLITE_OK );
/* If page one was fetched successfully, and this function is not
- ** operating in direct-mode, make page 1 writable. When not in
+ ** operating in direct-mode, make page 1 writable. When not in
** direct mode, page 1 is always held in cache and hence the PagerGet()
** above is always successful - hence the ALWAYS on rc==SQLITE_OK.
*/
@@ -62378,7 +57971,7 @@ static int pager_incr_changecounter(Pager *pPager, int isDirectMode){
if( DIRECT_MODE ){
const void *zBuf;
assert( pPager->dbFileSize>0 );
- CODEC2(pPager, pPgHdr->pData, 1, 6, rc=SQLITE_NOMEM_BKPT, zBuf);
+ zBuf = pPgHdr->pData;
if( rc==SQLITE_OK ){
rc = sqlite3OsWrite(pPager->fd, zBuf, pPager->pageSize, 0);
pPager->aStat[PAGER_STAT_WRITE]++;
@@ -62409,9 +58002,9 @@ static int pager_incr_changecounter(Pager *pPager, int isDirectMode){
** If successful, or if called on a pager for which it is a no-op, this
** function returns SQLITE_OK. Otherwise, an IO error code is returned.
*/
-SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager, const char *zMaster){
+SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager, const char *zSuper){
int rc = SQLITE_OK;
- void *pArg = (void*)zMaster;
+ void *pArg = (void*)zSuper;
rc = sqlite3OsFileControl(pPager->fd, SQLITE_FCNTL_SYNC, pArg);
if( rc==SQLITE_NOTFOUND ) rc = SQLITE_OK;
if( rc==SQLITE_OK && !pPager->noSync ){
@@ -62423,22 +58016,22 @@ SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager, const char *zMaster){
/*
** This function may only be called while a write-transaction is active in
-** rollback. If the connection is in WAL mode, this call is a no-op.
-** Otherwise, if the connection does not already have an EXCLUSIVE lock on
+** rollback. If the connection is in WAL mode, this call is a no-op.
+** Otherwise, if the connection does not already have an EXCLUSIVE lock on
** the database file, an attempt is made to obtain one.
**
** If the EXCLUSIVE lock is already held or the attempt to obtain it is
** successful, or the connection is in WAL mode, SQLITE_OK is returned.
-** Otherwise, either SQLITE_BUSY or an SQLITE_IOERR_XXX error code is
+** Otherwise, either SQLITE_BUSY or an SQLITE_IOERR_XXX error code is
** returned.
*/
SQLITE_PRIVATE int sqlite3PagerExclusiveLock(Pager *pPager){
int rc = pPager->errCode;
assert( assert_pager_state(pPager) );
if( rc==SQLITE_OK ){
- assert( pPager->eState==PAGER_WRITER_CACHEMOD
- || pPager->eState==PAGER_WRITER_DBMOD
- || pPager->eState==PAGER_WRITER_LOCKED
+ assert( pPager->eState==PAGER_WRITER_CACHEMOD
+ || pPager->eState==PAGER_WRITER_DBMOD
+ || pPager->eState==PAGER_WRITER_LOCKED
);
assert( assert_pager_state(pPager) );
if( 0==pagerUseWal(pPager) ){
@@ -62449,24 +58042,24 @@ SQLITE_PRIVATE int sqlite3PagerExclusiveLock(Pager *pPager){
}
/*
-** Sync the database file for the pager pPager. zMaster points to the name
-** of a master journal file that should be written into the individual
-** journal file. zMaster may be NULL, which is interpreted as no master
-** journal (a single database transaction).
+** Sync the database file for the pager pPager. zSuper points to the name
+** of a super-journal file that should be written into the individual
+** journal file. zSuper may be NULL, which is interpreted as no
+** super-journal (a single database transaction).
**
** This routine ensures that:
**
** * The database file change-counter is updated,
** * the journal is synced (unless the atomic-write optimization is used),
-** * all dirty pages are written to the database file,
+** * all dirty pages are written to the database file,
** * the database file is truncated (if required), and
-** * the database file synced.
+** * the database file synced.
**
-** The only thing that remains to commit the transaction is to finalize
-** (delete, truncate or zero the first part of) the journal file (or
-** delete the master journal file if specified).
+** The only thing that remains to commit the transaction is to finalize
+** (delete, truncate or zero the first part of) the journal file (or
+** delete the super-journal file if specified).
**
-** Note that if zMaster==NULL, this does not overwrite a previous value
+** Note that if zSuper==NULL, this does not overwrite a previous value
** passed to an sqlite3PagerCommitPhaseOne() call.
**
** If the final parameter - noSync - is true, then the database file itself
@@ -62476,7 +58069,7 @@ SQLITE_PRIVATE int sqlite3PagerExclusiveLock(Pager *pPager){
*/
SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(
Pager *pPager, /* Pager object */
- const char *zMaster, /* If not NULL, the master journal name */
+ const char *zSuper, /* If not NULL, the super-journal name */
int noSync /* True to omit the xSync on the db file */
){
int rc = SQLITE_OK; /* Return code */
@@ -62494,8 +58087,8 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(
/* Provide the ability to easily simulate an I/O error during testing */
if( sqlite3FaultSim(400) ) return SQLITE_IOERR;
- PAGERTRACE(("DATABASE SYNC: File=%s zMaster=%s nSize=%d\n",
- pPager->zFilename, zMaster, pPager->dbSize));
+ PAGERTRACE(("DATABASE SYNC: File=%s zSuper=%s nSize=%d\n",
+ pPager->zFilename, zSuper, pPager->dbSize));
/* If no database changes have been made, return early. */
if( pPager->eStatefd;
- int bBatch = zMaster==0 /* An SQLITE_IOCAP_BATCH_ATOMIC commit */
+ int bBatch = zSuper==0 /* An SQLITE_IOCAP_BATCH_ATOMIC commit */
&& (sqlite3OsDeviceCharacteristics(fd) & SQLITE_IOCAP_BATCH_ATOMIC)
&& !pPager->noSync
&& sqlite3JournalIsInMemory(pPager->jfd);
@@ -62545,11 +58138,11 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(
#ifdef SQLITE_ENABLE_ATOMIC_WRITE
/* The following block updates the change-counter. Exactly how it
** does this depends on whether or not the atomic-update optimization
- ** was enabled at compile time, and if this transaction meets the
- ** runtime criteria to use the operation:
+ ** was enabled at compile time, and if this transaction meets the
+ ** runtime criteria to use the operation:
**
** * The file-system supports the atomic-write property for
- ** blocks of size page-size, and
+ ** blocks of size page-size, and
** * This commit is not part of a multi-file transaction, and
** * Exactly one page has been modified and store in the journal file.
**
@@ -62559,7 +58152,7 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(
** is not applicable to this transaction, call sqlite3JournalCreate()
** to make sure the journal file has actually been created, then call
** pager_incr_changecounter() to update the change-counter in indirect
- ** mode.
+ ** mode.
**
** Otherwise, if the optimization is both enabled and applicable,
** then call pager_incr_changecounter() to update the change-counter
@@ -62568,19 +58161,19 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(
*/
if( bBatch==0 ){
PgHdr *pPg;
- assert( isOpen(pPager->jfd)
- || pPager->journalMode==PAGER_JOURNALMODE_OFF
- || pPager->journalMode==PAGER_JOURNALMODE_WAL
+ assert( isOpen(pPager->jfd)
+ || pPager->journalMode==PAGER_JOURNALMODE_OFF
+ || pPager->journalMode==PAGER_JOURNALMODE_WAL
);
- if( !zMaster && isOpen(pPager->jfd)
- && pPager->journalOff==jrnlBufferSize(pPager)
+ if( !zSuper && isOpen(pPager->jfd)
+ && pPager->journalOff==jrnlBufferSize(pPager)
&& pPager->dbSize>=pPager->dbOrigSize
&& (!(pPg = sqlite3PcacheDirtyList(pPager->pPCache)) || 0==pPg->pDirty)
){
- /* Update the db file change counter via the direct-write method. The
- ** following call will modify the in-memory representation of page 1
- ** to include the updated change counter and then write page 1
- ** directly to the database file. Because of the atomic-write
+ /* Update the db file change counter via the direct-write method. The
+ ** following call will modify the in-memory representation of page 1
+ ** to include the updated change counter and then write page 1
+ ** directly to the database file. Because of the atomic-write
** property of the host file-system, this is safe.
*/
rc = pager_incr_changecounter(pPager, 1);
@@ -62593,7 +58186,7 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(
}
#else /* SQLITE_ENABLE_ATOMIC_WRITE */
#ifdef SQLITE_ENABLE_BATCH_ATOMIC_WRITE
- if( zMaster ){
+ if( zSuper ){
rc = sqlite3JournalCreate(pPager->jfd);
if( rc!=SQLITE_OK ) goto commit_phase_one_exit;
assert( bBatch==0 );
@@ -62602,24 +58195,24 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(
rc = pager_incr_changecounter(pPager, 0);
#endif /* !SQLITE_ENABLE_ATOMIC_WRITE */
if( rc!=SQLITE_OK ) goto commit_phase_one_exit;
-
- /* Write the master journal name into the journal file. If a master
- ** journal file name has already been written to the journal file,
- ** or if zMaster is NULL (no master journal), then this call is a no-op.
+
+ /* Write the super-journal name into the journal file. If a
+ ** super-journal file name has already been written to the journal file,
+ ** or if zSuper is NULL (no super-journal), then this call is a no-op.
*/
- rc = writeMasterJournal(pPager, zMaster);
+ rc = writeSuperJournal(pPager, zSuper);
if( rc!=SQLITE_OK ) goto commit_phase_one_exit;
-
+
/* Sync the journal file and write all dirty pages to the database.
- ** If the atomic-update optimization is being used, this sync will not
+ ** If the atomic-update optimization is being used, this sync will not
** create the journal file or perform any real IO.
**
** Because the change-counter page was just modified, unless the
** atomic-update optimization is used it is almost certain that the
** journal requires a sync here. However, in locking_mode=exclusive
- ** on a system under memory pressure it is just possible that this is
+ ** on a system under memory pressure it is just possible that this is
** not the case. In this case it is likely enough that the redundant
- ** xSync() call will be changed to a no-op by the OS anyhow.
+ ** xSync() call will be changed to a no-op by the OS anyhow.
*/
rc = syncJournal(pPager, 0);
if( rc!=SQLITE_OK ) goto commit_phase_one_exit;
@@ -62660,7 +58253,7 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(
}
sqlite3PcacheCleanAll(pPager->pPCache);
- /* If the file on disk is smaller than the database image, use
+ /* If the file on disk is smaller than the database image, use
** pager_truncate to grow the file here. This can happen if the database
** image was extended as part of the current transaction and then the
** last page in the db image moved to the free-list. In this case the
@@ -62672,10 +58265,10 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(
rc = pager_truncate(pPager, nNew);
if( rc!=SQLITE_OK ) goto commit_phase_one_exit;
}
-
+
/* Finally, sync the database file. */
if( !noSync ){
- rc = sqlite3PagerSync(pPager, zMaster);
+ rc = sqlite3PagerSync(pPager, zSuper);
}
IOTRACE(("DBSYNC %p\n", pPager))
}
@@ -62692,12 +58285,12 @@ commit_phase_one_exit:
/*
** When this function is called, the database file has been completely
** updated to reflect the changes made by the current transaction and
-** synced to disk. The journal file still exists in the file-system
+** synced to disk. The journal file still exists in the file-system
** though, and if a failure occurs at this point it will eventually
** be used as a hot-journal and the current transaction rolled back.
**
-** This function finalizes the journal file, either by deleting,
-** truncating or partially zeroing it, so that it cannot be used
+** This function finalizes the journal file, either by deleting,
+** truncating or partially zeroing it, so that it cannot be used
** for hot-journal rollback. Once this is done the transaction is
** irrevocably committed.
**
@@ -62711,6 +58304,7 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager *pPager){
** But if (due to a coding error elsewhere in the system) it does get
** called, just return the same error code without doing anything. */
if( NEVER(pPager->errCode) ) return pPager->errCode;
+ pPager->iDataVersion++;
assert( pPager->eState==PAGER_WRITER_LOCKED
|| pPager->eState==PAGER_WRITER_FINISHED
@@ -62722,15 +58316,15 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager *pPager){
** this transaction, the pager is running in exclusive-mode and is
** using persistent journals, then this function is a no-op.
**
- ** The start of the journal file currently contains a single journal
+ ** The start of the journal file currently contains a single journal
** header with the nRec field set to 0. If such a journal is used as
** a hot-journal during hot-journal rollback, 0 changes will be made
- ** to the database file. So there is no need to zero the journal
+ ** to the database file. So there is no need to zero the journal
** header. Since the pager is in exclusive mode, there is no need
** to drop any locks either.
*/
- if( pPager->eState==PAGER_WRITER_LOCKED
- && pPager->exclusiveMode
+ if( pPager->eState==PAGER_WRITER_LOCKED
+ && pPager->exclusiveMode
&& pPager->journalMode==PAGER_JOURNALMODE_PERSIST
){
assert( pPager->journalOff==JOURNAL_HDR_SZ(pPager) || !pPager->journalOff );
@@ -62739,13 +58333,12 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager *pPager){
}
PAGERTRACE(("COMMIT %d\n", PAGERID(pPager)));
- pPager->iDataVersion++;
- rc = pager_end_transaction(pPager, pPager->setMaster, 1);
+ rc = pager_end_transaction(pPager, pPager->setSuper, 1);
return pager_error(pPager, rc);
}
/*
-** If a write transaction is open, then all changes made within the
+** If a write transaction is open, then all changes made within the
** transaction are reverted and the current write-transaction is closed.
** The pager falls back to PAGER_READER state if successful, or PAGER_ERROR
** state if an error occurs.
@@ -62755,14 +58348,14 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager *pPager){
**
** Otherwise, in rollback mode, this function performs two functions:
**
-** 1) It rolls back the journal file, restoring all database file and
+** 1) It rolls back the journal file, restoring all database file and
** in-memory cache pages to the state they were in when the transaction
** was opened, and
**
** 2) It finalizes the journal file, so that it is not used for hot
** rollback at any point in the future.
**
-** Finalization of the journal file (task 2) is only performed if the
+** Finalization of the journal file (task 2) is only performed if the
** rollback is successful.
**
** In WAL mode, all cache-entries containing data modified within the
@@ -62775,7 +58368,7 @@ SQLITE_PRIVATE int sqlite3PagerRollback(Pager *pPager){
PAGERTRACE(("ROLLBACK %d\n", PAGERID(pPager)));
/* PagerRollback() is a no-op if called in READER or OPEN state. If
- ** the pager is already in the ERROR state, the rollback is not
+ ** the pager is already in the ERROR state, the rollback is not
** attempted here. Instead, the error code is returned to the caller.
*/
assert( assert_pager_state(pPager) );
@@ -62785,13 +58378,13 @@ SQLITE_PRIVATE int sqlite3PagerRollback(Pager *pPager){
if( pagerUseWal(pPager) ){
int rc2;
rc = sqlite3PagerSavepoint(pPager, SAVEPOINT_ROLLBACK, -1);
- rc2 = pager_end_transaction(pPager, pPager->setMaster, 0);
+ rc2 = pager_end_transaction(pPager, pPager->setSuper, 0);
if( rc==SQLITE_OK ) rc = rc2;
}else if( !isOpen(pPager->jfd) || pPager->eState==PAGER_WRITER_LOCKED ){
int eState = pPager->eState;
rc = pager_end_transaction(pPager, 0, 0);
if( !MEMDB && eState>PAGER_WRITER_LOCKED ){
- /* This can happen using journal_mode=off. Move the pager to the error
+ /* This can happen using journal_mode=off. Move the pager to the error
** state to indicate that the contents of the cache may not be trusted.
** Any active readers will get SQLITE_ABORT.
*/
@@ -62806,7 +58399,7 @@ SQLITE_PRIVATE int sqlite3PagerRollback(Pager *pPager){
assert( pPager->eState==PAGER_READER || rc!=SQLITE_OK );
assert( rc==SQLITE_OK || rc==SQLITE_FULL || rc==SQLITE_CORRUPT
- || rc==SQLITE_NOMEM || (rc&0xFF)==SQLITE_IOERR
+ || rc==SQLITE_NOMEM || (rc&0xFF)==SQLITE_IOERR
|| rc==SQLITE_CANTOPEN
);
@@ -62880,8 +58473,8 @@ SQLITE_PRIVATE int *sqlite3PagerStats(Pager *pPager){
** it was added later.
**
** Before returning, *pnVal is incremented by the
-** current cache hit or miss count, according to the value of eStat. If the
-** reset parameter is non-zero, the cache hit or miss count is zeroed before
+** current cache hit or miss count, according to the value of eStat. If the
+** reset parameter is non-zero, the cache hit or miss count is zeroed before
** returning.
*/
SQLITE_PRIVATE void sqlite3PagerCacheStat(Pager *pPager, int eStat, int reset, int *pnVal){
@@ -62917,7 +58510,7 @@ SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager *pPager){
** to make up the difference. If the number of savepoints is already
** equal to nSavepoint, then this function is a no-op.
**
-** If a memory allocation fails, SQLITE_NOMEM is returned. If an error
+** If a memory allocation fails, SQLITE_NOMEM is returned. If an error
** occurs while opening the sub-journal file, then an IO error code is
** returned. Otherwise, SQLITE_OK.
*/
@@ -62932,7 +58525,7 @@ static SQLITE_NOINLINE int pagerOpenSavepoint(Pager *pPager, int nSavepoint){
assert( nSavepoint>nCurrent && pPager->useJournal );
/* Grow the Pager.aSavepoint array using realloc(). Return SQLITE_NOMEM
- ** if the allocation fails. Otherwise, zero the new portion in case a
+ ** if the allocation fails. Otherwise, zero the new portion in case a
** malloc failure occurs while populating it in the for(...) loop below.
*/
aNew = (PagerSavepoint *)sqlite3Realloc(
@@ -62980,7 +58573,7 @@ SQLITE_PRIVATE int sqlite3PagerOpenSavepoint(Pager *pPager, int nSavepoint){
/*
** This function is called to rollback or release (commit) a savepoint.
-** The savepoint to release or rollback need not be the most recently
+** The savepoint to release or rollback need not be the most recently
** created savepoint.
**
** Parameter op is always either SAVEPOINT_ROLLBACK or SAVEPOINT_RELEASE.
@@ -62988,29 +58581,29 @@ SQLITE_PRIVATE int sqlite3PagerOpenSavepoint(Pager *pPager, int nSavepoint){
** index iSavepoint. If it is SAVEPOINT_ROLLBACK, then rollback all changes
** that have occurred since the specified savepoint was created.
**
-** The savepoint to rollback or release is identified by parameter
+** The savepoint to rollback or release is identified by parameter
** iSavepoint. A value of 0 means to operate on the outermost savepoint
** (the first created). A value of (Pager.nSavepoint-1) means operate
** on the most recently created savepoint. If iSavepoint is greater than
** (Pager.nSavepoint-1), then this function is a no-op.
**
** If a negative value is passed to this function, then the current
-** transaction is rolled back. This is different to calling
+** transaction is rolled back. This is different to calling
** sqlite3PagerRollback() because this function does not terminate
-** the transaction or unlock the database, it just restores the
-** contents of the database to its original state.
+** the transaction or unlock the database, it just restores the
+** contents of the database to its original state.
**
-** In any case, all savepoints with an index greater than iSavepoint
+** In any case, all savepoints with an index greater than iSavepoint
** are destroyed. If this is a release operation (op==SAVEPOINT_RELEASE),
** then savepoint iSavepoint is also destroyed.
**
** This function may return SQLITE_NOMEM if a memory allocation fails,
-** or an IO error code if an IO error occurs while rolling back a
+** or an IO error code if an IO error occurs while rolling back a
** savepoint. If no errors occur, SQLITE_OK is returned.
-*/
+*/
SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint){
int rc = pPager->errCode;
-
+
#ifdef SQLITE_ENABLE_ZIPVFS
if( op==SAVEPOINT_RELEASE ) rc = SQLITE_OK;
#endif
@@ -63023,7 +58616,7 @@ SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint){
int nNew; /* Number of remaining savepoints after this op. */
/* Figure out how many savepoints will still be active after this
- ** operation. Store this value in nNew. Then free resources associated
+ ** operation. Store this value in nNew. Then free resources associated
** with any savepoints that are destroyed by this operation.
*/
nNew = iSavepoint + (( op==SAVEPOINT_RELEASE ) ? 0 : 1);
@@ -63032,7 +58625,7 @@ SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint){
}
pPager->nSavepoint = nNew;
- /* If this is a release of the outermost savepoint, truncate
+ /* If this is a release of the outermost savepoint, truncate
** the sub-journal to zero bytes in size. */
if( op==SAVEPOINT_RELEASE ){
if( nNew==0 && isOpen(pPager->sjfd) ){
@@ -63054,14 +58647,14 @@ SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint){
rc = pagerPlaybackSavepoint(pPager, pSavepoint);
assert(rc!=SQLITE_DONE);
}
-
+
#ifdef SQLITE_ENABLE_ZIPVFS
- /* If the cache has been modified but the savepoint cannot be rolled
+ /* If the cache has been modified but the savepoint cannot be rolled
** back journal_mode=off, put the pager in the error state. This way,
** if the VFS used by this pager includes ZipVFS, the entire transaction
** can be rolled back at the ZipVFS level. */
- else if(
- pPager->journalMode==PAGER_JOURNALMODE_OFF
+ else if(
+ pPager->journalMode==PAGER_JOURNALMODE_OFF
&& pPager->eState>=PAGER_WRITER_CACHEMOD
){
pPager->errCode = SQLITE_ABORT;
@@ -63083,9 +58676,13 @@ SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint){
** behavior. But when the Btree needs to know the filename for matching to
** shared cache, it uses nullIfMemDb==0 so that in-memory databases can
** participate in shared-cache.
+**
+** The return value to this routine is always safe to use with
+** sqlite3_uri_parameter() and sqlite3_filename_database() and friends.
*/
-SQLITE_PRIVATE const char *sqlite3PagerFilename(Pager *pPager, int nullIfMemDb){
- return (nullIfMemDb && pPager->memDb) ? "" : pPager->zFilename;
+SQLITE_PRIVATE const char *sqlite3PagerFilename(const Pager *pPager, int nullIfMemDb){
+ static const char zFake[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+ return (nullIfMemDb && pPager->memDb) ? &zFake[4] : pPager->zFilename;
}
/*
@@ -63104,16 +58701,6 @@ SQLITE_PRIVATE sqlite3_file *sqlite3PagerFile(Pager *pPager){
return pPager->fd;
}
-#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
-/*
-** Reset the lock timeout for pager.
-*/
-SQLITE_PRIVATE void sqlite3PagerResetLockTimeout(Pager *pPager){
- int x = 0;
- sqlite3OsFileControl(pPager->fd, SQLITE_FCNTL_LOCK_TIMEOUT, &x);
-}
-#endif
-
/*
** Return the file handle for the journal file (if it exists).
** This will be either the rollback journal or the WAL file.
@@ -63133,54 +58720,6 @@ SQLITE_PRIVATE const char *sqlite3PagerJournalname(Pager *pPager){
return pPager->zJournal;
}
-#ifdef SQLITE_HAS_CODEC
-/*
-** Set or retrieve the codec for this pager
-*/
-SQLITE_PRIVATE void sqlite3PagerSetCodec(
- Pager *pPager,
- void *(*xCodec)(void*,void*,Pgno,int),
- void (*xCodecSizeChng)(void*,int,int),
- void (*xCodecFree)(void*),
- void *pCodec
-){
- if( pPager->xCodecFree ){
- pPager->xCodecFree(pPager->pCodec);
- }else{
- pager_reset(pPager);
- }
- pPager->xCodec = pPager->memDb ? 0 : xCodec;
- pPager->xCodecSizeChng = xCodecSizeChng;
- pPager->xCodecFree = xCodecFree;
- pPager->pCodec = pCodec;
- setGetterMethod(pPager);
- pagerReportSize(pPager);
-}
-SQLITE_PRIVATE void *sqlite3PagerGetCodec(Pager *pPager){
- return pPager->pCodec;
-}
-
-/*
-** This function is called by the wal module when writing page content
-** into the log file.
-**
-** This function returns a pointer to a buffer containing the encrypted
-** page content. If a malloc fails, this function may return NULL.
-*/
-SQLITE_PRIVATE void *sqlite3PagerCodec(PgHdr *pPg){
- void *aData = 0;
- CODEC2(pPg->pPager, pPg->pData, pPg->pgno, 6, return 0, aData);
- return aData;
-}
-
-/*
-** Return the current pager state
-*/
-SQLITE_PRIVATE int sqlite3PagerState(Pager *pPager){
- return pPager->eState;
-}
-#endif /* SQLITE_HAS_CODEC */
-
#ifndef SQLITE_OMIT_AUTOVACUUM
/*
** Move the page pPg to location pgno in the file.
@@ -63200,8 +58739,8 @@ SQLITE_PRIVATE int sqlite3PagerState(Pager *pPager){
** transaction is active).
**
** If the fourth argument, isCommit, is non-zero, then this page is being
-** moved as part of a database reorganization just before the transaction
-** is being committed. In this case, it is guaranteed that the database page
+** moved as part of a database reorganization just before the transaction
+** is being committed. In this case, it is guaranteed that the database page
** pPg refers to will not be written to again within this transaction.
**
** This function may return SQLITE_NOMEM or an IO error code if an error
@@ -63229,7 +58768,7 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i
}
/* If the page being moved is dirty and has not been saved by the latest
- ** savepoint, then save the current contents of the page into the
+ ** savepoint, then save the current contents of the page into the
** sub-journal now. This is required to handle the following scenario:
**
** BEGIN;
@@ -63252,7 +58791,7 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i
return rc;
}
- PAGERTRACE(("MOVE %d page %d (needSync=%d) moves to %d\n",
+ PAGERTRACE(("MOVE %d page %d (needSync=%d) moves to %d\n",
PAGERID(pPager), pPg->pgno, (pPg->flags&PGHDR_NEED_SYNC)?1:0, pgno));
IOTRACE(("MOVE %p %d %d\n", pPager, pPg->pgno, pgno))
@@ -63260,7 +58799,7 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i
** be written to, store pPg->pgno in local variable needSyncPgno.
**
** If the isCommit flag is set, there is no need to remember that
- ** the journal needs to be sync()ed before database page pPg->pgno
+ ** the journal needs to be sync()ed before database page pPg->pgno
** can be written to. The caller has already promised not to write to it.
*/
if( (pPg->flags&PGHDR_NEED_SYNC) && !isCommit ){
@@ -63271,8 +58810,8 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i
}
/* If the cache contains a page with page-number pgno, remove it
- ** from its hash chain. Also, if the PGHDR_NEED_SYNC flag was set for
- ** page pgno before the 'move' operation, it needs to be retained
+ ** from its hash chain. Also, if the PGHDR_NEED_SYNC flag was set for
+ ** page pgno before the 'move' operation, it needs to be retained
** for the page moved there.
*/
pPg->flags &= ~PGHDR_NEED_SYNC;
@@ -63307,9 +58846,9 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i
}
if( needSyncPgno ){
- /* If needSyncPgno is non-zero, then the journal file needs to be
+ /* If needSyncPgno is non-zero, then the journal file needs to be
** sync()ed before any data is written to database file page needSyncPgno.
- ** Currently, no such page exists in the page-cache and the
+ ** Currently, no such page exists in the page-cache and the
** "is journaled" bitvec flag has been set. This needs to be remedied by
** loading the page into the pager-cache and setting the PGHDR_NEED_SYNC
** flag.
@@ -63340,9 +58879,9 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i
#endif
/*
-** The page handle passed as the first argument refers to a dirty page
-** with a page number other than iNew. This function changes the page's
-** page number to iNew and sets the value of the PgHdr.flags field to
+** The page handle passed as the first argument refers to a dirty page
+** with a page number other than iNew. This function changes the page's
+** page number to iNew and sets the value of the PgHdr.flags field to
** the value passed as the third parameter.
*/
SQLITE_PRIVATE void sqlite3PagerRekey(DbPage *pPg, Pgno iNew, u16 flags){
@@ -63360,7 +58899,7 @@ SQLITE_PRIVATE void *sqlite3PagerGetData(DbPage *pPg){
}
/*
-** Return a pointer to the Pager.nExtra bytes of "extra" space
+** Return a pointer to the Pager.nExtra bytes of "extra" space
** allocated along with the specified page.
*/
SQLITE_PRIVATE void *sqlite3PagerGetExtra(DbPage *pPg){
@@ -63369,7 +58908,7 @@ SQLITE_PRIVATE void *sqlite3PagerGetExtra(DbPage *pPg){
/*
** Get/set the locking-mode for this pager. Parameter eMode must be one
-** of PAGER_LOCKINGMODE_QUERY, PAGER_LOCKINGMODE_NORMAL or
+** of PAGER_LOCKINGMODE_QUERY, PAGER_LOCKINGMODE_NORMAL or
** PAGER_LOCKINGMODE_EXCLUSIVE. If the parameter is not _QUERY, then
** the locking-mode is set to the value specified.
**
@@ -63417,8 +58956,8 @@ SQLITE_PRIVATE int sqlite3PagerSetJournalMode(Pager *pPager, int eMode){
assert( eMode==PAGER_JOURNALMODE_DELETE
|| eMode==PAGER_JOURNALMODE_TRUNCATE
|| eMode==PAGER_JOURNALMODE_PERSIST
- || eMode==PAGER_JOURNALMODE_OFF
- || eMode==PAGER_JOURNALMODE_WAL
+ || eMode==PAGER_JOURNALMODE_OFF
+ || eMode==PAGER_JOURNALMODE_WAL
|| eMode==PAGER_JOURNALMODE_MEMORY );
/* This routine is only called from the OP_JournalMode opcode, and
@@ -63575,7 +59114,6 @@ SQLITE_PRIVATE int sqlite3PagerCheckpoint(
pPager->walSyncFlags, pPager->pageSize, (u8 *)pPager->pTmpSpace,
pnLog, pnCkpt
);
- sqlite3PagerResetLockTimeout(pPager);
}
return rc;
}
@@ -63604,7 +59142,7 @@ static int pagerExclusiveLock(Pager *pPager){
assert( pPager->eLock==SHARED_LOCK || pPager->eLock==EXCLUSIVE_LOCK );
rc = pagerLockDb(pPager, EXCLUSIVE_LOCK);
if( rc!=SQLITE_OK ){
- /* If the attempt to grab the exclusive lock failed, release the
+ /* If the attempt to grab the exclusive lock failed, release the
** pending lock that may have been obtained instead. */
pagerUnlockDb(pPager, SHARED_LOCK);
}
@@ -63613,7 +59151,7 @@ static int pagerExclusiveLock(Pager *pPager){
}
/*
-** Call sqlite3WalOpen() to open the WAL handle. If the pager is in
+** Call sqlite3WalOpen() to open the WAL handle. If the pager is in
** exclusive-locking mode when this function is called, take an EXCLUSIVE
** lock on the database file and use heap-memory to store the wal-index
** in. Otherwise, use the normal shared-memory.
@@ -63624,8 +59162,8 @@ static int pagerOpenWal(Pager *pPager){
assert( pPager->pWal==0 && pPager->tempFile==0 );
assert( pPager->eLock==SHARED_LOCK || pPager->eLock==EXCLUSIVE_LOCK );
- /* If the pager is already in exclusive-mode, the WAL module will use
- ** heap-memory for the wal-index instead of the VFS shared-memory
+ /* If the pager is already in exclusive-mode, the WAL module will use
+ ** heap-memory for the wal-index instead of the VFS shared-memory
** implementation. Take the exclusive lock now, before opening the WAL
** file, to make sure this is safe.
*/
@@ -63633,7 +59171,7 @@ static int pagerOpenWal(Pager *pPager){
rc = pagerExclusiveLock(pPager);
}
- /* Open the connection to the log file. If this operation fails,
+ /* Open the connection to the log file. If this operation fails,
** (e.g. due to malloc() failure), return an error code.
*/
if( rc==SQLITE_OK ){
@@ -63655,7 +59193,7 @@ static int pagerOpenWal(Pager *pPager){
** If the pager passed as the first argument is open on a real database
** file (not a temp file or an in-memory database), and the WAL file
** is not already open, make an attempt to open it now. If successful,
-** return SQLITE_OK. If an error occurs or the VFS used by the pager does
+** return SQLITE_OK. If an error occurs or the VFS used by the pager does
** not support the xShmXXX() methods, return an error code. *pbOpen is
** not modified in either case.
**
@@ -63697,7 +59235,7 @@ SQLITE_PRIVATE int sqlite3PagerOpenWal(
** This function is called to close the connection to the log file prior
** to switching from WAL to rollback mode.
**
-** Before closing the log file, this function attempts to take an
+** Before closing the log file, this function attempts to take an
** EXCLUSIVE lock on the database file. If this cannot be obtained, an
** error (SQLITE_BUSY) is returned and the log connection is not closed.
** If successful, the EXCLUSIVE lock is not released before returning.
@@ -63723,7 +59261,7 @@ SQLITE_PRIVATE int sqlite3PagerCloseWal(Pager *pPager, sqlite3 *db){
rc = pagerOpenWal(pPager);
}
}
-
+
/* Checkpoint and close the log. Because an EXCLUSIVE lock is held on
** the database file, the log and log-summary files will be deleted.
*/
@@ -63740,6 +59278,32 @@ SQLITE_PRIVATE int sqlite3PagerCloseWal(Pager *pPager, sqlite3 *db){
return rc;
}
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+/*
+** If pager pPager is a wal-mode database not in exclusive locking mode,
+** invoke the sqlite3WalWriteLock() function on the associated Wal object
+** with the same db and bLock parameters as were passed to this function.
+** Return an SQLite error code if an error occurs, or SQLITE_OK otherwise.
+*/
+SQLITE_PRIVATE int sqlite3PagerWalWriteLock(Pager *pPager, int bLock){
+ int rc = SQLITE_OK;
+ if( pagerUseWal(pPager) && pPager->exclusiveMode==0 ){
+ rc = sqlite3WalWriteLock(pPager->pWal, bLock);
+ }
+ return rc;
+}
+
+/*
+** Set the database handle used by the wal layer to determine if
+** blocking locks are required.
+*/
+SQLITE_PRIVATE void sqlite3PagerWalDb(Pager *pPager, sqlite3 *db){
+ if( pagerUseWal(pPager) ){
+ sqlite3WalDb(pPager->pWal, db);
+ }
+}
+#endif
+
#ifdef SQLITE_ENABLE_SNAPSHOT
/*
** If this is a WAL database, obtain a snapshot handle for the snapshot
@@ -63755,10 +59319,13 @@ SQLITE_PRIVATE int sqlite3PagerSnapshotGet(Pager *pPager, sqlite3_snapshot **ppS
/*
** If this is a WAL database, store a pointer to pSnapshot. Next time a
-** read transaction is opened, attempt to read from the snapshot it
+** read transaction is opened, attempt to read from the snapshot it
** identifies. If this is not a WAL database, return an error.
*/
-SQLITE_PRIVATE int sqlite3PagerSnapshotOpen(Pager *pPager, sqlite3_snapshot *pSnapshot){
+SQLITE_PRIVATE int sqlite3PagerSnapshotOpen(
+ Pager *pPager,
+ sqlite3_snapshot *pSnapshot
+){
int rc = SQLITE_OK;
if( pPager->pWal ){
sqlite3WalSnapshotOpen(pPager->pWal, pSnapshot);
@@ -63769,7 +59336,7 @@ SQLITE_PRIVATE int sqlite3PagerSnapshotOpen(Pager *pPager, sqlite3_snapshot *pSn
}
/*
-** If this is a WAL database, call sqlite3WalSnapshotRecover(). If this
+** If this is a WAL database, call sqlite3WalSnapshotRecover(). If this
** is not a WAL database, return an error.
*/
SQLITE_PRIVATE int sqlite3PagerSnapshotRecover(Pager *pPager){
@@ -63786,7 +59353,7 @@ SQLITE_PRIVATE int sqlite3PagerSnapshotRecover(Pager *pPager){
** The caller currently has a read transaction open on the database.
** If this is not a WAL database, SQLITE_ERROR is returned. Otherwise,
** this function takes a SHARED lock on the CHECKPOINTER slot and then
-** checks if the snapshot passed as the second argument is still
+** checks if the snapshot passed as the second argument is still
** available. If so, SQLITE_OK is returned.
**
** If the snapshot is not available, SQLITE_ERROR is returned. Or, if
@@ -63846,7 +59413,7 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){
**
*************************************************************************
**
-** This file contains the implementation of a write-ahead log (WAL) used in
+** This file contains the implementation of a write-ahead log (WAL) used in
** "journal_mode=WAL" mode.
**
** WRITE-AHEAD LOG (WAL) FILE FORMAT
@@ -63855,7 +59422,7 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){
** Each frame records the revised content of a single page from the
** database file. All changes to the database are recorded by writing
** frames into the WAL. Transactions commit when a frame is written that
-** contains a commit marker. A single WAL can and usually does record
+** contains a commit marker. A single WAL can and usually does record
** multiple transactions. Periodically, the content of the WAL is
** transferred back into the database file in an operation called a
** "checkpoint".
@@ -63881,11 +59448,11 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){
**
** Immediately following the wal-header are zero or more frames. Each
** frame consists of a 24-byte frame-header followed by a bytes
-** of page data. The frame-header is six big-endian 32-bit unsigned
+** of page data. The frame-header is six big-endian 32-bit unsigned
** integer values, as follows:
**
** 0: Page number.
-** 4: For commit records, the size of the database image in pages
+** 4: For commit records, the size of the database image in pages
** after the commit. For all other records, zero.
** 8: Salt-1 (copied from the header)
** 12: Salt-2 (copied from the header)
@@ -63911,7 +59478,7 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){
** the checksum. The checksum is computed by interpreting the input as
** an even number of unsigned 32-bit integers: x[0] through x[N]. The
** algorithm used for the checksum is as follows:
-**
+**
** for i from 0 to n-1 step 2:
** s0 += x[i] + s1;
** s1 += x[i+1] + s0;
@@ -63919,7 +59486,7 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){
**
** Note that s0 and s1 are both weighted checksums using fibonacci weights
** in reverse order (the largest fibonacci weight occurs on the first element
-** of the sequence being summed.) The s1 value spans all 32-bit
+** of the sequence being summed.) The s1 value spans all 32-bit
** terms of the sequence whereas s0 omits the final term.
**
** On a checkpoint, the WAL is first VFS.xSync-ed, then valid content of the
@@ -63952,19 +59519,19 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){
** multiple concurrent readers to view different versions of the database
** content simultaneously.
**
-** The reader algorithm in the previous paragraphs works correctly, but
+** The reader algorithm in the previous paragraphs works correctly, but
** because frames for page P can appear anywhere within the WAL, the
** reader has to scan the entire WAL looking for page P frames. If the
** WAL is large (multiple megabytes is typical) that scan can be slow,
** and read performance suffers. To overcome this problem, a separate
** data structure called the wal-index is maintained to expedite the
** search for frames of a particular page.
-**
+**
** WAL-INDEX FORMAT
**
** Conceptually, the wal-index is shared memory, though VFS implementations
** might choose to implement the wal-index using a mmapped file. Because
-** the wal-index is shared memory, SQLite does not support journal_mode=WAL
+** the wal-index is shared memory, SQLite does not support journal_mode=WAL
** on a network filesystem. All users of the database must be able to
** share memory.
**
@@ -63982,28 +59549,28 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){
** byte order of the host computer.
**
** The purpose of the wal-index is to answer this question quickly: Given
-** a page number P and a maximum frame index M, return the index of the
+** a page number P and a maximum frame index M, return the index of the
** last frame in the wal before frame M for page P in the WAL, or return
** NULL if there are no frames for page P in the WAL prior to M.
**
** The wal-index consists of a header region, followed by an one or
-** more index blocks.
+** more index blocks.
**
** The wal-index header contains the total number of frames within the WAL
** in the mxFrame field.
**
-** Each index block except for the first contains information on
+** Each index block except for the first contains information on
** HASHTABLE_NPAGE frames. The first index block contains information on
-** HASHTABLE_NPAGE_ONE frames. The values of HASHTABLE_NPAGE_ONE and
+** HASHTABLE_NPAGE_ONE frames. The values of HASHTABLE_NPAGE_ONE and
** HASHTABLE_NPAGE are selected so that together the wal-index header and
** first index block are the same size as all other index blocks in the
** wal-index.
**
** Each index block contains two sections, a page-mapping that contains the
-** database page number associated with each wal frame, and a hash-table
+** database page number associated with each wal frame, and a hash-table
** that allows readers to query an index block for a specific page number.
** The page-mapping is an array of HASHTABLE_NPAGE (or HASHTABLE_NPAGE_ONE
-** for the first index block) 32-bit page numbers. The first entry in the
+** for the first index block) 32-bit page numbers. The first entry in the
** first index-block contains the database page number corresponding to the
** first frame in the WAL file. The first entry in the second index block
** in the WAL file corresponds to the (HASHTABLE_NPAGE_ONE+1)th frame in
@@ -64024,8 +59591,8 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){
**
** The hash table consists of HASHTABLE_NSLOT 16-bit unsigned integers.
** HASHTABLE_NSLOT = 2*HASHTABLE_NPAGE, and there is one entry in the
-** hash table for each page number in the mapping section, so the hash
-** table is never more than half full. The expected number of collisions
+** hash table for each page number in the mapping section, so the hash
+** table is never more than half full. The expected number of collisions
** prior to finding a match is 1. Each entry of the hash table is an
** 1-based index of an entry in the mapping section of the same
** index block. Let K be the 1-based index of the largest entry in
@@ -64044,12 +59611,12 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){
** reached) until an unused hash slot is found. Let the first unused slot
** be at index iUnused. (iUnused might be less than iKey if there was
** wrap-around.) Because the hash table is never more than half full,
-** the search is guaranteed to eventually hit an unused entry. Let
+** the search is guaranteed to eventually hit an unused entry. Let
** iMax be the value between iKey and iUnused, closest to iUnused,
** where aHash[iMax]==P. If there is no iMax entry (if there exists
** no hash slot such that aHash[i]==p) then page P is not in the
** current index block. Otherwise the iMax-th mapping entry of the
-** current index block corresponds to the last entry that references
+** current index block corresponds to the last entry that references
** page P.
**
** A hash search begins with the last index block and moves toward the
@@ -64074,7 +59641,7 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){
** if no values greater than K0 had ever been inserted into the hash table
** in the first place - which is what reader one wants. Meanwhile, the
** second reader using K1 will see additional values that were inserted
-** later, which is exactly what reader two wants.
+** later, which is exactly what reader two wants.
**
** When a rollback occurs, the value of K is decreased. Hash table entries
** that correspond to frames greater than the new K value are removed
@@ -64094,18 +59661,6 @@ SQLITE_PRIVATE int sqlite3WalTrace = 0;
# define WALTRACE(X)
#endif
-/*
-** WAL mode depends on atomic aligned 32-bit loads and stores in a few
-** places. The following macros try to make this explicit.
-*/
-#if GCC_VESRION>=5004000
-# define AtomicLoad(PTR) __atomic_load_n((PTR),__ATOMIC_RELAXED)
-# define AtomicStore(PTR,VAL) __atomic_store_n((PTR),(VAL),__ATOMIC_RELAXED)
-#else
-# define AtomicLoad(PTR) (*(PTR))
-# define AtomicStore(PTR,VAL) (*(PTR) = (VAL))
-#endif
-
/*
** The maximum (and only) versions of the wal and wal-index formats
** that may be interpreted by this version of SQLite.
@@ -64114,7 +59669,7 @@ SQLITE_PRIVATE int sqlite3WalTrace = 0;
** values in the wal-header are correct and (b) the version field is not
** WAL_MAX_VERSION, recovery fails and SQLite returns SQLITE_CANTOPEN.
**
-** Similarly, if a client successfully reads a wal-index header (i.e. the
+** Similarly, if a client successfully reads a wal-index header (i.e. the
** checksum test is successful) and finds that the version field is not
** WALINDEX_MAX_VERSION, then no read-transaction is opened and SQLite
** returns SQLITE_CANTOPEN.
@@ -64161,7 +59716,7 @@ typedef struct WalCkptInfo WalCkptInfo;
**
** The szPage value can be any power of 2 between 512 and 32768, inclusive.
** Or it can be 1 to represent a 65536-byte page. The latter case was
-** added in 3.7.1 when support for 64K pages was added.
+** added in 3.7.1 when support for 64K pages was added.
*/
struct WalIndexHdr {
u32 iVersion; /* Wal-index version */
@@ -64203,7 +59758,7 @@ struct WalIndexHdr {
** There is one entry in aReadMark[] for each reader lock. If a reader
** holds read-lock K, then the value in aReadMark[K] is no greater than
** the mxFrame for that reader. The value READMARK_NOT_USED (0xffffffff)
-** for any aReadMark[] means that entry is unused. aReadMark[0] is
+** for any aReadMark[] means that entry is unused. aReadMark[0] is
** a special case; its value is never used and it exists as a place-holder
** to avoid having to offset aReadMark[] indexs by one. Readers holding
** WAL_READ_LOCK(0) always ignore the entire WAL and read all content
@@ -64223,7 +59778,7 @@ struct WalIndexHdr {
** previous sentence is when nBackfill equals mxFrame (meaning that everything
** in the WAL has been backfilled into the database) then new readers
** will choose aReadMark[0] which has value 0 and hence such reader will
-** get all their all content directly from the database file and ignore
+** get all their all content directly from the database file and ignore
** the WAL.
**
** Writers normally append new frames to the end of the WAL. However,
@@ -64265,14 +59820,14 @@ struct WalCkptInfo {
** big-endian format in the first 4 bytes of a WAL file.
**
** If the LSB is set, then the checksums for each frame within the WAL
-** file are calculated by treating all data as an array of 32-bit
-** big-endian words. Otherwise, they are calculated by interpreting
+** file are calculated by treating all data as an array of 32-bit
+** big-endian words. Otherwise, they are calculated by interpreting
** all data as 32-bit little-endian words.
*/
#define WAL_MAGIC 0x377f0682
/*
-** Return the offset of frame iFrame in the write-ahead log file,
+** Return the offset of frame iFrame in the write-ahead log file,
** assuming a database page size of szPage bytes. The offset returned
** is to the start of the write-ahead log frame-header.
*/
@@ -64315,13 +59870,16 @@ struct Wal {
#ifdef SQLITE_ENABLE_SNAPSHOT
WalIndexHdr *pSnapshot; /* Start transaction here if not NULL */
#endif
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+ sqlite3 *db;
+#endif
};
/*
** Candidate values for Wal.exclusiveMode.
*/
#define WAL_NORMAL_MODE 0
-#define WAL_EXCLUSIVE_MODE 1
+#define WAL_EXCLUSIVE_MODE 1
#define WAL_HEAPMEMORY_MODE 2
/*
@@ -64340,7 +59898,7 @@ typedef u16 ht_slot;
/*
** This structure is used to implement an iterator that loops through
** all frames in the WAL in database page order. Where two or more frames
-** correspond to the same database page, the iterator visits only the
+** correspond to the same database page, the iterator visits only the
** frame most recently written to the WAL (in other words, the frame with
** the largest index).
**
@@ -64353,7 +59911,7 @@ typedef u16 ht_slot;
** This functionality is used by the checkpoint code (see walCheckpoint()).
*/
struct WalIterator {
- int iPrior; /* Last result returned from the iterator */
+ u32 iPrior; /* Last result returned from the iterator */
int nSegment; /* Number of entries in aSegment[] */
struct WalSegment {
int iNext; /* Next slot in aIndex[] not yet returned */
@@ -64376,7 +59934,7 @@ struct WalIterator {
#define HASHTABLE_HASH_1 383 /* Should be prime */
#define HASHTABLE_NSLOT (HASHTABLE_NPAGE*2) /* Must be a power of 2 */
-/*
+/*
** The block of page numbers associated with the first hash-table in a
** wal-index is smaller than usual. This is so that there is a complete
** hash-table on each aligned 32KB page of the wal-index.
@@ -64413,7 +59971,7 @@ static SQLITE_NOINLINE int walIndexPageRealloc(
if( pWal->nWiData<=iPage ){
sqlite3_int64 nByte = sizeof(u32*)*(iPage+1);
volatile u32 **apNew;
- apNew = (volatile u32 **)sqlite3_realloc64((void *)pWal->apWiData, nByte);
+ apNew = (volatile u32 **)sqlite3Realloc((void *)pWal->apWiData, nByte);
if( !apNew ){
*ppPage = 0;
return SQLITE_NOMEM_BKPT;
@@ -64430,12 +59988,14 @@ static SQLITE_NOINLINE int walIndexPageRealloc(
pWal->apWiData[iPage] = (u32 volatile *)sqlite3MallocZero(WALINDEX_PGSZ);
if( !pWal->apWiData[iPage] ) rc = SQLITE_NOMEM_BKPT;
}else{
- rc = sqlite3OsShmMap(pWal->pDbFd, iPage, WALINDEX_PGSZ,
+ rc = sqlite3OsShmMap(pWal->pDbFd, iPage, WALINDEX_PGSZ,
pWal->writeLock, (void volatile **)&pWal->apWiData[iPage]
);
assert( pWal->apWiData[iPage]!=0 || rc!=SQLITE_OK || pWal->writeLock==0 );
testcase( pWal->apWiData[iPage]==0 && rc==SQLITE_OK );
- if( (rc&0xff)==SQLITE_READONLY ){
+ if( rc==SQLITE_OK ){
+ if( iPage>0 && sqlite3FaultSim(600) ) rc = SQLITE_NOMEM;
+ }else if( (rc&0xff)==SQLITE_READONLY ){
pWal->readOnly |= WAL_SHM_RDONLY;
if( rc==SQLITE_READONLY ){
rc = SQLITE_OK;
@@ -64487,7 +60047,7 @@ static volatile WalIndexHdr *walIndexHdr(Wal *pWal){
)
/*
-** Generate or extend an 8 byte checksum based on the data in
+** Generate or extend an 8 byte checksum based on the data in
** array aByte[] and the initial values of aIn[0] and aIn[1] (or
** initial values of 0 and 0 if aIn==NULL).
**
@@ -64534,18 +60094,35 @@ static void walChecksumBytes(
aOut[1] = s2;
}
+/*
+** If there is the possibility of concurrent access to the SHM file
+** from multiple threads and/or processes, then do a memory barrier.
+*/
static void walShmBarrier(Wal *pWal){
if( pWal->exclusiveMode!=WAL_HEAPMEMORY_MODE ){
sqlite3OsShmBarrier(pWal->pDbFd);
}
}
+/*
+** Add the SQLITE_NO_TSAN as part of the return-type of a function
+** definition as a hint that the function contains constructs that
+** might give false-positive TSAN warnings.
+**
+** See tag-20200519-1.
+*/
+#if defined(__clang__) && !defined(SQLITE_NO_TSAN)
+# define SQLITE_NO_TSAN __attribute__((no_sanitize_thread))
+#else
+# define SQLITE_NO_TSAN
+#endif
+
/*
** Write the header information in pWal->hdr into the wal-index.
**
** The checksum on pWal->hdr is updated before it is written.
*/
-static void walIndexWriteHdr(Wal *pWal){
+static SQLITE_NO_TSAN void walIndexWriteHdr(Wal *pWal){
volatile WalIndexHdr *aHdr = walIndexHdr(pWal);
const int nCksum = offsetof(WalIndexHdr, aCksum);
@@ -64553,6 +60130,7 @@ static void walIndexWriteHdr(Wal *pWal){
pWal->hdr.isInit = 1;
pWal->hdr.iVersion = WALINDEX_MAX_VERSION;
walChecksumBytes(1, (u8*)&pWal->hdr, nCksum, 0, pWal->hdr.aCksum);
+ /* Possible TSAN false-positive. See tag-20200519-1 */
memcpy((void*)&aHdr[1], (const void*)&pWal->hdr, sizeof(WalIndexHdr));
walShmBarrier(pWal);
memcpy((void*)&aHdr[0], (const void*)&pWal->hdr, sizeof(WalIndexHdr));
@@ -64560,11 +60138,11 @@ static void walIndexWriteHdr(Wal *pWal){
/*
** This function encodes a single frame header and writes it to a buffer
-** supplied by the caller. A frame-header is made up of a series of
+** supplied by the caller. A frame-header is made up of a series of
** 4-byte big-endian integers, as follows:
**
** 0: Page number.
-** 4: For commit records, the size of the database image in pages
+** 4: For commit records, the size of the database image in pages
** after the commit. For all other records, zero.
** 8: Salt-1 (copied from the wal-header)
** 12: Salt-2 (copied from the wal-header)
@@ -64615,7 +60193,7 @@ static int walDecodeFrame(
assert( WAL_FRAME_HDRSIZE==24 );
/* A frame is only valid if the salt values in the frame-header
- ** match the salt values in the wal-header.
+ ** match the salt values in the wal-header.
*/
if( memcmp(&pWal->hdr.aSalt, &aFrame[8], 8)!=0 ){
return 0;
@@ -64629,15 +60207,15 @@ static int walDecodeFrame(
}
/* A frame is only valid if a checksum of the WAL header,
- ** all prior frams, the first 16 bytes of this frame-header,
- ** and the frame-data matches the checksum in the last 8
+ ** all prior frams, the first 16 bytes of this frame-header,
+ ** and the frame-data matches the checksum in the last 8
** bytes of this frame-header.
*/
nativeCksum = (pWal->hdr.bigEndCksum==SQLITE_BIGENDIAN);
walChecksumBytes(nativeCksum, aFrame, 8, aCksum, aCksum);
walChecksumBytes(nativeCksum, aData, pWal->szPage, aCksum, aCksum);
- if( aCksum[0]!=sqlite3Get4byte(&aFrame[16])
- || aCksum[1]!=sqlite3Get4byte(&aFrame[20])
+ if( aCksum[0]!=sqlite3Get4byte(&aFrame[16])
+ || aCksum[1]!=sqlite3Get4byte(&aFrame[20])
){
/* Checksum failed. */
return 0;
@@ -64672,7 +60250,7 @@ static const char *walLockName(int lockIdx){
}
}
#endif /*defined(SQLITE_TEST) || defined(SQLITE_DEBUG) */
-
+
/*
** Set or release locks on the WAL. Locks are either shared or exclusive.
@@ -64688,7 +60266,7 @@ static int walLockShared(Wal *pWal, int lockIdx){
SQLITE_SHM_LOCK | SQLITE_SHM_SHARED);
WALTRACE(("WAL%p: acquire SHARED-%s %s\n", pWal,
walLockName(lockIdx), rc ? "failed" : "ok"));
- VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && rc!=SQLITE_BUSY); )
+ VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && (rc&0xFF)!=SQLITE_BUSY); )
return rc;
}
static void walUnlockShared(Wal *pWal, int lockIdx){
@@ -64704,7 +60282,7 @@ static int walLockExclusive(Wal *pWal, int lockIdx, int n){
SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE);
WALTRACE(("WAL%p: acquire EXCLUSIVE-%s cnt=%d %s\n", pWal,
walLockName(lockIdx), n, rc ? "failed" : "ok"));
- VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && rc!=SQLITE_BUSY); )
+ VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && (rc&0xFF)!=SQLITE_BUSY); )
return rc;
}
static void walUnlockExclusive(Wal *pWal, int lockIdx, int n){
@@ -64741,15 +60319,15 @@ struct WalHashLoc {
u32 iZero; /* One less than the frame number of first indexed*/
};
-/*
+/*
** Return pointers to the hash table and page number array stored on
** page iHash of the wal-index. The wal-index is broken into 32KB pages
** numbered starting from 0.
**
** Set output variable pLoc->aHash to point to the start of the hash table
-** in the wal-index file. Set pLoc->iZero to one less than the frame
+** in the wal-index file. Set pLoc->iZero to one less than the frame
** number of the first frame indexed by this hash table. If a
-** slot in the hash table is set to N, it refers to frame number
+** slot in the hash table is set to N, it refers to frame number
** (pLoc->iZero+N) in the log.
**
** Finally, set pLoc->aPgno so that pLoc->aPgno[1] is the page number of the
@@ -64781,7 +60359,7 @@ static int walHashGet(
/*
** Return the number of the wal-index page that contains the hash-table
** and page-number array that contain entries corresponding to WAL frame
-** iFrame. The wal-index is broken up into 32KB pages. Wal-index pages
+** iFrame. The wal-index is broken up into 32KB pages. Wal-index pages
** are numbered starting from 0.
*/
static int walFramePage(u32 iFrame){
@@ -64792,6 +60370,7 @@ static int walFramePage(u32 iFrame){
&& (iHash>=2 || iFrame<=HASHTABLE_NPAGE_ONE+HASHTABLE_NPAGE)
&& (iHash<=2 || iFrame>(HASHTABLE_NPAGE_ONE+2*HASHTABLE_NPAGE))
);
+ assert( iHash>=0 );
return iHash;
}
@@ -64832,7 +60411,7 @@ static void walCleanupHash(Wal *pWal){
if( pWal->hdr.mxFrame==0 ) return;
- /* Obtain pointers to the hash-table and page-number array containing
+ /* Obtain pointers to the hash-table and page-number array containing
** the entry that corresponds to frame pWal->hdr.mxFrame. It is guaranteed
** that the page said hash-table and array reside on is already mapped.(1)
*/
@@ -64851,9 +60430,9 @@ static void walCleanupHash(Wal *pWal){
sLoc.aHash[i] = 0;
}
}
-
+
/* Zero the entries in the aPgno array that correspond to frames with
- ** frame numbers greater than pWal->hdr.mxFrame.
+ ** frame numbers greater than pWal->hdr.mxFrame.
*/
nByte = (int)((char *)sLoc.aHash - (char *)&sLoc.aPgno[iLimit+1]);
memset((void *)&sLoc.aPgno[iLimit+1], 0, nByte);
@@ -64896,9 +60475,9 @@ static int walIndexAppend(Wal *pWal, u32 iFrame, u32 iPage){
idx = iFrame - sLoc.iZero;
assert( idx <= HASHTABLE_NSLOT/2 + 1 );
-
+
/* If this is the first entry to be added to this hash-table, zero the
- ** entire hash table and aPgno[] array before proceeding.
+ ** entire hash table and aPgno[] array before proceeding.
*/
if( idx==1 ){
int nByte = (int)((u8 *)&sLoc.aHash[HASHTABLE_NSLOT]
@@ -64908,8 +60487,8 @@ static int walIndexAppend(Wal *pWal, u32 iFrame, u32 iPage){
/* If the entry in aPgno[] is already set, then the previous writer
** must have exited unexpectedly in the middle of a transaction (after
- ** writing one or more dirty pages to the WAL to free up memory).
- ** Remove the remnants of that writers uncommitted transaction from
+ ** writing one or more dirty pages to the WAL to free up memory).
+ ** Remove the remnants of that writers uncommitted transaction from
** the hash-table before writing any new entries.
*/
if( sLoc.aPgno[idx] ){
@@ -64923,7 +60502,7 @@ static int walIndexAppend(Wal *pWal, u32 iFrame, u32 iPage){
if( (nCollide--)==0 ) return SQLITE_CORRUPT_BKPT;
}
sLoc.aPgno[idx] = iPage;
- sLoc.aHash[iKey] = (ht_slot)idx;
+ AtomicStore(&sLoc.aHash[iKey], (ht_slot)idx);
#ifdef SQLITE_ENABLE_EXPENSIVE_ASSERT
/* Verify that the number of entries in the hash table exactly equals
@@ -64961,7 +60540,7 @@ static int walIndexAppend(Wal *pWal, u32 iFrame, u32 iPage){
/*
-** Recover the wal-index by reading the write-ahead log file.
+** Recover the wal-index by reading the write-ahead log file.
**
** This routine first tries to establish an exclusive lock on the
** wal-index to prevent other threads/processes from doing anything
@@ -64988,12 +60567,6 @@ static int walIndexRecover(Wal *pWal){
assert( pWal->writeLock );
iLock = WAL_ALL_BUT_WRITE + pWal->ckptLock;
rc = walLockExclusive(pWal, iLock, WAL_READ_LOCK(0)-iLock);
- if( rc==SQLITE_OK ){
- rc = walLockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1);
- if( rc!=SQLITE_OK ){
- walUnlockExclusive(pWal, iLock, WAL_READ_LOCK(0)-iLock);
- }
- }
if( rc ){
return rc;
}
@@ -65009,15 +60582,16 @@ static int walIndexRecover(Wal *pWal){
if( nSize>WAL_HDRSIZE ){
u8 aBuf[WAL_HDRSIZE]; /* Buffer to load WAL header into */
+ u32 *aPrivate = 0; /* Heap copy of *-shm hash being populated */
u8 *aFrame = 0; /* Malloc'd buffer to load entire frame */
int szFrame; /* Number of bytes in buffer aFrame[] */
u8 *aData; /* Pointer to data part of aFrame buffer */
- int iFrame; /* Index of last frame read */
- i64 iOffset; /* Next offset to read from log file */
int szPage; /* Page size according to the log */
u32 magic; /* Magic value read from WAL header */
u32 version; /* Magic value read from WAL header */
int isValid; /* True if this frame is valid */
+ u32 iPg; /* Current 32KB wal-index page */
+ u32 iLastFrame; /* Last frame in wal, based on nSize alone */
/* Read in the WAL header. */
rc = sqlite3OsRead(pWal->pWalFd, aBuf, WAL_HDRSIZE, 0);
@@ -65026,16 +60600,16 @@ static int walIndexRecover(Wal *pWal){
}
/* If the database page size is not a power of two, or is greater than
- ** SQLITE_MAX_PAGE_SIZE, conclude that the WAL file contains no valid
+ ** SQLITE_MAX_PAGE_SIZE, conclude that the WAL file contains no valid
** data. Similarly, if the 'magic' value is invalid, ignore the whole
** WAL file.
*/
magic = sqlite3Get4byte(&aBuf[0]);
szPage = sqlite3Get4byte(&aBuf[8]);
- if( (magic&0xFFFFFFFE)!=WAL_MAGIC
- || szPage&(szPage-1)
- || szPage>SQLITE_MAX_PAGE_SIZE
- || szPage<512
+ if( (magic&0xFFFFFFFE)!=WAL_MAGIC
+ || szPage&(szPage-1)
+ || szPage>SQLITE_MAX_PAGE_SIZE
+ || szPage<512
){
goto finished;
}
@@ -65045,7 +60619,7 @@ static int walIndexRecover(Wal *pWal){
memcpy(&pWal->hdr.aSalt, &aBuf[16], 8);
/* Verify that the WAL header checksum is correct */
- walChecksumBytes(pWal->hdr.bigEndCksum==SQLITE_BIGENDIAN,
+ walChecksumBytes(pWal->hdr.bigEndCksum==SQLITE_BIGENDIAN,
aBuf, WAL_HDRSIZE-2*4, 0, pWal->hdr.aFrameCksum
);
if( pWal->hdr.aFrameCksum[0]!=sqlite3Get4byte(&aBuf[24])
@@ -65064,38 +60638,82 @@ static int walIndexRecover(Wal *pWal){
/* Malloc a buffer to read frames into. */
szFrame = szPage + WAL_FRAME_HDRSIZE;
- aFrame = (u8 *)sqlite3_malloc64(szFrame);
+ aFrame = (u8 *)sqlite3_malloc64(szFrame + WALINDEX_PGSZ);
if( !aFrame ){
rc = SQLITE_NOMEM_BKPT;
goto recovery_error;
}
aData = &aFrame[WAL_FRAME_HDRSIZE];
+ aPrivate = (u32*)&aData[szPage];
/* Read all frames from the log file. */
- iFrame = 0;
- for(iOffset=WAL_HDRSIZE; (iOffset+szFrame)<=nSize; iOffset+=szFrame){
- u32 pgno; /* Database page number for frame */
- u32 nTruncate; /* dbsize field from frame header */
+ iLastFrame = (nSize - WAL_HDRSIZE) / szFrame;
+ for(iPg=0; iPg<=(u32)walFramePage(iLastFrame); iPg++){
+ u32 *aShare;
+ u32 iFrame; /* Index of last frame read */
+ u32 iLast = MIN(iLastFrame, HASHTABLE_NPAGE_ONE+iPg*HASHTABLE_NPAGE);
+ u32 iFirst = 1 + (iPg==0?0:HASHTABLE_NPAGE_ONE+(iPg-1)*HASHTABLE_NPAGE);
+ u32 nHdr, nHdr32;
+ rc = walIndexPage(pWal, iPg, (volatile u32**)&aShare);
+ if( rc ) break;
+ pWal->apWiData[iPg] = aPrivate;
- /* Read and decode the next log frame. */
- iFrame++;
- rc = sqlite3OsRead(pWal->pWalFd, aFrame, szFrame, iOffset);
- if( rc!=SQLITE_OK ) break;
- isValid = walDecodeFrame(pWal, &pgno, &nTruncate, aData, aFrame);
- if( !isValid ) break;
- rc = walIndexAppend(pWal, iFrame, pgno);
- if( rc!=SQLITE_OK ) break;
+ for(iFrame=iFirst; iFrame<=iLast; iFrame++){
+ i64 iOffset = walFrameOffset(iFrame, szPage);
+ u32 pgno; /* Database page number for frame */
+ u32 nTruncate; /* dbsize field from frame header */
- /* If nTruncate is non-zero, this is a commit record. */
- if( nTruncate ){
- pWal->hdr.mxFrame = iFrame;
- pWal->hdr.nPage = nTruncate;
- pWal->hdr.szPage = (u16)((szPage&0xff00) | (szPage>>16));
- testcase( szPage<=32768 );
- testcase( szPage>=65536 );
- aFrameCksum[0] = pWal->hdr.aFrameCksum[0];
- aFrameCksum[1] = pWal->hdr.aFrameCksum[1];
+ /* Read and decode the next log frame. */
+ rc = sqlite3OsRead(pWal->pWalFd, aFrame, szFrame, iOffset);
+ if( rc!=SQLITE_OK ) break;
+ isValid = walDecodeFrame(pWal, &pgno, &nTruncate, aData, aFrame);
+ if( !isValid ) break;
+ rc = walIndexAppend(pWal, iFrame, pgno);
+ if( NEVER(rc!=SQLITE_OK) ) break;
+
+ /* If nTruncate is non-zero, this is a commit record. */
+ if( nTruncate ){
+ pWal->hdr.mxFrame = iFrame;
+ pWal->hdr.nPage = nTruncate;
+ pWal->hdr.szPage = (u16)((szPage&0xff00) | (szPage>>16));
+ testcase( szPage<=32768 );
+ testcase( szPage>=65536 );
+ aFrameCksum[0] = pWal->hdr.aFrameCksum[0];
+ aFrameCksum[1] = pWal->hdr.aFrameCksum[1];
+ }
}
+ pWal->apWiData[iPg] = aShare;
+ nHdr = (iPg==0 ? WALINDEX_HDR_SIZE : 0);
+ nHdr32 = nHdr / sizeof(u32);
+#ifndef SQLITE_SAFER_WALINDEX_RECOVERY
+ /* Memcpy() should work fine here, on all reasonable implementations.
+ ** Technically, memcpy() might change the destination to some
+ ** intermediate value before setting to the final value, and that might
+ ** cause a concurrent reader to malfunction. Memcpy() is allowed to
+ ** do that, according to the spec, but no memcpy() implementation that
+ ** we know of actually does that, which is why we say that memcpy()
+ ** is safe for this. Memcpy() is certainly a lot faster.
+ */
+ memcpy(&aShare[nHdr32], &aPrivate[nHdr32], WALINDEX_PGSZ-nHdr);
+#else
+ /* In the event that some platform is found for which memcpy()
+ ** changes the destination to some intermediate value before
+ ** setting the final value, this alternative copy routine is
+ ** provided.
+ */
+ {
+ int i;
+ for(i=nHdr32; ihdr.aFrameCksum[1] = aFrameCksum[1];
walIndexWriteHdr(pWal);
- /* Reset the checkpoint-header. This is safe because this thread is
- ** currently holding locks that exclude all other readers, writers and
- ** checkpointers.
+ /* Reset the checkpoint-header. This is safe because this thread is
+ ** currently holding locks that exclude all other writers and
+ ** checkpointers. Then set the values of read-mark slots 1 through N.
*/
pInfo = walCkptInfo(pWal);
pInfo->nBackfill = 0;
pInfo->nBackfillAttempted = pWal->hdr.mxFrame;
pInfo->aReadMark[0] = 0;
- for(i=1; iaReadMark[i] = READMARK_NOT_USED;
- if( pWal->hdr.mxFrame ) pInfo->aReadMark[1] = pWal->hdr.mxFrame;
+ for(i=1; ihdr.mxFrame ){
+ pInfo->aReadMark[i] = pWal->hdr.mxFrame;
+ }else{
+ pInfo->aReadMark[i] = READMARK_NOT_USED;
+ }
+ walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1);
+ }else if( rc!=SQLITE_BUSY ){
+ goto recovery_error;
+ }
+ }
/* If more than one frame was recovered from the log file, report an
** event via sqlite3_log(). This is to help with identifying performance
@@ -65136,7 +60765,6 @@ finished:
recovery_error:
WALTRACE(("WAL%p: recovery %s\n", pWal, rc ? "failed" : "ok"));
walUnlockExclusive(pWal, iLock, WAL_READ_LOCK(0)-iLock);
- walUnlockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1);
return rc;
}
@@ -65156,8 +60784,8 @@ static void walIndexClose(Wal *pWal, int isDelete){
}
}
-/*
-** Open a connection to the WAL file zWalName. The database file must
+/*
+** Open a connection to the WAL file zWalName. The database file must
** already be opened on connection pDbFd. The buffer that zWalName points
** to must remain valid for the lifetime of the returned Wal* handle.
**
@@ -65167,7 +60795,7 @@ static void walIndexClose(Wal *pWal, int isDelete){
** were to do this just after this client opened one of these files, the
** system would be badly broken.
**
-** If the log file is successfully opened, SQLITE_OK is returned and
+** If the log file is successfully opened, SQLITE_OK is returned and
** *ppWal is set to point to a new WAL handle. If an error occurs,
** an SQLite error code is returned and *ppWal is left unmodified.
*/
@@ -65331,7 +60959,7 @@ static void walMerge(
ht_slot logpage;
Pgno dbpage;
- if( (iLeft=nRight || aContent[aLeft[iLeft]]aSegment[p->nSegment])[sLoc.iZero];
sLoc.iZero++;
-
+
for(j=0; jdb ){
+ int tmout = pWal->db->busyTimeout;
+ if( tmout ){
+ int rc;
+ rc = sqlite3OsFileControl(
+ pWal->pDbFd, SQLITE_FCNTL_LOCK_TIMEOUT, (void*)&tmout
+ );
+ res = (rc==SQLITE_OK);
+ }
+ }
+ return res;
+}
+
+/*
+** Disable blocking locks.
+*/
+static void walDisableBlocking(Wal *pWal){
+ int tmout = 0;
+ sqlite3OsFileControl(pWal->pDbFd, SQLITE_FCNTL_LOCK_TIMEOUT, (void*)&tmout);
+}
+
+/*
+** If parameter bLock is true, attempt to enable blocking locks, take
+** the WRITER lock, and then disable blocking locks. If blocking locks
+** cannot be enabled, no attempt to obtain the WRITER lock is made. Return
+** an SQLite error code if an error occurs, or SQLITE_OK otherwise. It is not
+** an error if blocking locks can not be enabled.
+**
+** If the bLock parameter is false and the WRITER lock is held, release it.
+*/
+SQLITE_PRIVATE int sqlite3WalWriteLock(Wal *pWal, int bLock){
+ int rc = SQLITE_OK;
+ assert( pWal->readLock<0 || bLock==0 );
+ if( bLock ){
+ assert( pWal->db );
+ if( walEnableBlocking(pWal) ){
+ rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1);
+ if( rc==SQLITE_OK ){
+ pWal->writeLock = 1;
+ }
+ walDisableBlocking(pWal);
+ }
+ }else if( pWal->writeLock ){
+ walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1);
+ pWal->writeLock = 0;
+ }
+ return rc;
+}
+
+/*
+** Set the database handle used to determine if blocking locks are required.
+*/
+SQLITE_PRIVATE void sqlite3WalDb(Wal *pWal, sqlite3 *db){
+ pWal->db = db;
+}
+
+/*
+** Take an exclusive WRITE lock. Blocking if so configured.
+*/
+static int walLockWriter(Wal *pWal){
+ int rc;
+ walEnableBlocking(pWal);
+ rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1);
+ walDisableBlocking(pWal);
+ return rc;
+}
+#else
+# define walEnableBlocking(x) 0
+# define walDisableBlocking(x)
+# define walLockWriter(pWal) walLockExclusive((pWal), WAL_WRITE_LOCK, 1)
+# define sqlite3WalDb(pWal, db)
+#endif /* ifdef SQLITE_ENABLE_SETLK_TIMEOUT */
+
+
/*
** Attempt to obtain the exclusive WAL lock defined by parameters lockIdx and
** n. If the attempt fails and parameter xBusy is not NULL, then it is a
@@ -65541,6 +61252,12 @@ static int walBusyLock(
do {
rc = walLockExclusive(pWal, lockIdx, n);
}while( xBusy && rc==SQLITE_BUSY && xBusy(pBusyArg) );
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+ if( rc==SQLITE_BUSY_TIMEOUT ){
+ walDisableBlocking(pWal);
+ rc = SQLITE_BUSY;
+ }
+#endif
return rc;
}
@@ -65565,8 +61282,8 @@ static int walPagesize(Wal *pWal){
** client to write to the database (which may be this one) does so by
** writing frames into the start of the log file.
**
-** The value of parameter salt1 is used as the aSalt[1] value in the
-** new wal-index header. It should be passed a pseudo-random value (i.e.
+** The value of parameter salt1 is used as the aSalt[1] value in the
+** new wal-index header. It should be passed a pseudo-random value (i.e.
** one obtained from sqlite3_randomness()).
*/
static void walRestartHdr(Wal *pWal, u32 salt1){
@@ -65578,7 +61295,7 @@ static void walRestartHdr(Wal *pWal, u32 salt1){
sqlite3Put4byte((u8*)&aSalt[0], 1 + sqlite3Get4byte((u8*)&aSalt[0]));
memcpy(&pWal->hdr.aSalt[1], &salt1, 4);
walIndexWriteHdr(pWal);
- pInfo->nBackfill = 0;
+ AtomicStore(&pInfo->nBackfill, 0);
pInfo->nBackfillAttempted = 0;
pInfo->aReadMark[1] = 0;
for(i=2; iaReadMark[i] = READMARK_NOT_USED;
@@ -65594,8 +61311,8 @@ static void walRestartHdr(Wal *pWal, u32 salt1){
** that a concurrent reader might be using.
**
** All I/O barrier operations (a.k.a fsyncs) occur in this routine when
-** SQLite is in WAL-mode in synchronous=NORMAL. That means that if
-** checkpoints are always run by a background thread or background
+** SQLite is in WAL-mode in synchronous=NORMAL. That means that if
+** checkpoints are always run by a background thread or background
** process, foreground threads will never block on a lengthy fsync call.
**
** Fsync is called on the WAL before writing content out of the WAL and
@@ -65608,7 +61325,7 @@ static void walRestartHdr(Wal *pWal, u32 salt1){
** database file.
**
** This routine uses and updates the nBackfill field of the wal-index header.
-** This is the only routine that will increase the value of nBackfill.
+** This is the only routine that will increase the value of nBackfill.
** (A WAL reset or recovery will revert nBackfill to zero, but not increase
** its value.)
**
@@ -65653,20 +61370,13 @@ static int walCheckpoint(
mxSafeFrame = pWal->hdr.mxFrame;
mxPage = pWal->hdr.nPage;
for(i=1; iaReadMark[i];
+ u32 y = AtomicLoad(pInfo->aReadMark+i);
if( mxSafeFrame>y ){
assert( y<=pWal->hdr.mxFrame );
rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(i), 1);
if( rc==SQLITE_OK ){
- pInfo->aReadMark[i] = (i==1 ? mxSafeFrame : READMARK_NOT_USED);
+ u32 iMark = (i==1 ? mxSafeFrame : READMARK_NOT_USED);
+ AtomicStore(pInfo->aReadMark+i, iMark);
walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1);
}else if( rc==SQLITE_BUSY ){
mxSafeFrame = y;
@@ -65684,7 +61394,7 @@ static int walCheckpoint(
}
if( pIter
- && (rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(0),1))==SQLITE_OK
+ && (rc = walBusyLock(pWal,xBusy,pBusyArg,WAL_READ_LOCK(0),1))==SQLITE_OK
){
u32 nBackfill = pInfo->nBackfill;
@@ -65699,18 +61409,27 @@ static int walCheckpoint(
if( rc==SQLITE_OK ){
i64 nReq = ((i64)mxPage * szPage);
i64 nSize; /* Current size of database file */
+ sqlite3OsFileControl(pWal->pDbFd, SQLITE_FCNTL_CKPT_START, 0);
rc = sqlite3OsFileSize(pWal->pDbFd, &nSize);
if( rc==SQLITE_OK && nSizepDbFd, SQLITE_FCNTL_SIZE_HINT, &nReq);
+ if( (nSize+65536+(i64)pWal->hdr.mxFrame*szPage)pDbFd, SQLITE_FCNTL_SIZE_HINT,&nReq);
+ }
}
- }
+ }
/* Iterate through the contents of the WAL, copying data to the db file */
while( rc==SQLITE_OK && 0==walIteratorNext(pIter, &iDbpage, &iFrame) ){
i64 iOffset;
assert( walFramePgno(pWal, iFrame)==iDbpage );
- if( db->u1.isInterrupted ){
+ if( AtomicLoad(&db->u1.isInterrupted) ){
rc = db->mallocFailed ? SQLITE_NOMEM_BKPT : SQLITE_INTERRUPT;
break;
}
@@ -65726,6 +61445,7 @@ static int walCheckpoint(
rc = sqlite3OsWrite(pWal->pDbFd, zBuf, szPage, iOffset);
if( rc!=SQLITE_OK ) break;
}
+ sqlite3OsFileControl(pWal->pDbFd, SQLITE_FCNTL_CKPT_DONE, 0);
/* If work was actually accomplished... */
if( rc==SQLITE_OK ){
@@ -65738,7 +61458,7 @@ static int walCheckpoint(
}
}
if( rc==SQLITE_OK ){
- pInfo->nBackfill = mxSafeFrame;
+ AtomicStore(&pInfo->nBackfill, mxSafeFrame);
}
}
@@ -65754,8 +61474,8 @@ static int walCheckpoint(
}
/* If this is an SQLITE_CHECKPOINT_RESTART or TRUNCATE operation, and the
- ** entire wal file has been copied into the database file, then block
- ** until all readers have finished using the wal file. This ensures that
+ ** entire wal file has been copied into the database file, then block
+ ** until all readers have finished using the wal file. This ensures that
** the next process to write to the database restarts the wal file.
*/
if( rc==SQLITE_OK && eMode!=SQLITE_CHECKPOINT_PASSIVE ){
@@ -65779,7 +61499,7 @@ static int walCheckpoint(
** writer clients should see that the entire log file has been
** checkpointed and behave accordingly. This seems unsafe though,
** as it would leave the system in a state where the contents of
- ** the wal-index header do not match the contents of the
+ ** the wal-index header do not match the contents of the
** file-system. To avoid this, update the wal-index header to
** indicate that the log file contains zero valid frames. */
walRestartHdr(pWal, salt1);
@@ -65841,7 +61561,7 @@ SQLITE_PRIVATE int sqlite3WalClose(
if( pWal->exclusiveMode==WAL_NORMAL_MODE ){
pWal->exclusiveMode = WAL_EXCLUSIVE_MODE;
}
- rc = sqlite3WalCheckpoint(pWal, db,
+ rc = sqlite3WalCheckpoint(pWal, db,
SQLITE_CHECKPOINT_PASSIVE, 0, 0, sync_flags, nBuf, zBuf, 0, 0
);
if( rc==SQLITE_OK ){
@@ -65897,7 +61617,7 @@ SQLITE_PRIVATE int sqlite3WalClose(
** If the checksum cannot be verified return non-zero. If the header
** is read successfully and the checksum verified, return zero.
*/
-static int walIndexTryHdr(Wal *pWal, int *pChanged){
+static SQLITE_NO_TSAN int walIndexTryHdr(Wal *pWal, int *pChanged){
u32 aCksum[2]; /* Checksum on the header content */
WalIndexHdr h1, h2; /* Two copies of the header content */
WalIndexHdr volatile *aHdr; /* Header in shared memory */
@@ -65910,19 +61630,25 @@ static int walIndexTryHdr(Wal *pWal, int *pChanged){
** meaning it is possible that an inconsistent snapshot is read
** from the file. If this happens, return non-zero.
**
+ ** tag-20200519-1:
** There are two copies of the header at the beginning of the wal-index.
** When reading, read [0] first then [1]. Writes are in the reverse order.
** Memory barriers are used to prevent the compiler or the hardware from
- ** reordering the reads and writes.
+ ** reordering the reads and writes. TSAN and similar tools can sometimes
+ ** give false-positive warnings about these accesses because the tools do not
+ ** account for the double-read and the memory barrier. The use of mutexes
+ ** here would be problematic as the memory being accessed is potentially
+ ** shared among multiple processes and not all mutex implementions work
+ ** reliably in that environment.
*/
aHdr = walIndexHdr(pWal);
- memcpy(&h1, (void *)&aHdr[0], sizeof(h1));
+ memcpy(&h1, (void *)&aHdr[0], sizeof(h1)); /* Possible TSAN false-positive */
walShmBarrier(pWal);
memcpy(&h2, (void *)&aHdr[1], sizeof(h2));
if( memcmp(&h1, &h2, sizeof(h1))!=0 ){
return 1; /* Dirty read */
- }
+ }
if( h1.isInit==0 ){
return 1; /* Malformed header - probably all zeros */
}
@@ -65958,7 +61684,7 @@ static int walIndexTryHdr(Wal *pWal, int *pChanged){
** changed by this operation. If pWal->hdr is unchanged, set *pChanged
** to 0.
**
-** If the wal-index header is successfully read, return SQLITE_OK.
+** If the wal-index header is successfully read, return SQLITE_OK.
** Otherwise an SQLite error code.
*/
static int walIndexReadHdr(Wal *pWal, int *pChanged){
@@ -65966,7 +61692,7 @@ static int walIndexReadHdr(Wal *pWal, int *pChanged){
int badHdr; /* True if a header read failed */
volatile u32 *page0; /* Chunk of wal-index containing header */
- /* Ensure that page 0 of the wal-index (the page that contains the
+ /* Ensure that page 0 of the wal-index (the page that contains the
** wal-index header) is mapped. Return early if an error occurs here.
*/
assert( pChanged );
@@ -65998,7 +61724,7 @@ static int walIndexReadHdr(Wal *pWal, int *pChanged){
/* If the first page of the wal-index has been mapped, try to read the
** wal-index header immediately, without holding any lock. This usually
- ** works, but may fail if the wal-index header is corrupt or currently
+ ** works, but may fail if the wal-index header is corrupt or currently
** being modified by another thread or process.
*/
badHdr = (page0 ? walIndexTryHdr(pWal, pChanged) : 1);
@@ -66006,28 +61732,32 @@ static int walIndexReadHdr(Wal *pWal, int *pChanged){
/* If the first attempt failed, it might have been due to a race
** with a writer. So get a WRITE lock and try again.
*/
- assert( badHdr==0 || pWal->writeLock==0 );
if( badHdr ){
if( pWal->bShmUnreliable==0 && (pWal->readOnly & WAL_SHM_RDONLY) ){
if( SQLITE_OK==(rc = walLockShared(pWal, WAL_WRITE_LOCK)) ){
walUnlockShared(pWal, WAL_WRITE_LOCK);
rc = SQLITE_READONLY_RECOVERY;
}
- }else if( SQLITE_OK==(rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1)) ){
- pWal->writeLock = 1;
- if( SQLITE_OK==(rc = walIndexPage(pWal, 0, &page0)) ){
- badHdr = walIndexTryHdr(pWal, pChanged);
- if( badHdr ){
- /* If the wal-index header is still malformed even while holding
- ** a WRITE lock, it can only mean that the header is corrupted and
- ** needs to be reconstructed. So run recovery to do exactly that.
- */
- rc = walIndexRecover(pWal);
- *pChanged = 1;
+ }else{
+ int bWriteLock = pWal->writeLock;
+ if( bWriteLock || SQLITE_OK==(rc = walLockWriter(pWal)) ){
+ pWal->writeLock = 1;
+ if( SQLITE_OK==(rc = walIndexPage(pWal, 0, &page0)) ){
+ badHdr = walIndexTryHdr(pWal, pChanged);
+ if( badHdr ){
+ /* If the wal-index header is still malformed even while holding
+ ** a WRITE lock, it can only mean that the header is corrupted and
+ ** needs to be reconstructed. So run recovery to do exactly that.
+ */
+ rc = walIndexRecover(pWal);
+ *pChanged = 1;
+ }
+ }
+ if( bWriteLock==0 ){
+ pWal->writeLock = 0;
+ walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1);
}
}
- pWal->writeLock = 0;
- walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1);
}
}
@@ -66069,15 +61799,15 @@ static int walIndexReadHdr(Wal *pWal, int *pChanged){
**
** The *-wal file has been read and an appropriate wal-index has been
** constructed in pWal->apWiData[] using heap memory instead of shared
-** memory.
+** memory.
**
** If this function returns SQLITE_OK, then the read transaction has
-** been successfully opened. In this case output variable (*pChanged)
+** been successfully opened. In this case output variable (*pChanged)
** is set to true before returning if the caller should discard the
-** contents of the page cache before proceeding. Or, if it returns
-** WAL_RETRY, then the heap memory wal-index has been discarded and
-** the caller should retry opening the read transaction from the
-** beginning (including attempting to map the *-shm file).
+** contents of the page cache before proceeding. Or, if it returns
+** WAL_RETRY, then the heap memory wal-index has been discarded and
+** the caller should retry opening the read transaction from the
+** beginning (including attempting to map the *-shm file).
**
** If an error occurs, an SQLite error code is returned.
*/
@@ -66188,8 +61918,8 @@ static int walBeginShmUnreliable(Wal *pWal, int *pChanged){
** the caller. */
aSaveCksum[0] = pWal->hdr.aFrameCksum[0];
aSaveCksum[1] = pWal->hdr.aFrameCksum[1];
- for(iOffset=walFrameOffset(pWal->hdr.mxFrame+1, pWal->hdr.szPage);
- iOffset+szFrame<=szWal;
+ for(iOffset=walFrameOffset(pWal->hdr.mxFrame+1, pWal->hdr.szPage);
+ iOffset+szFrame<=szWal;
iOffset+=szFrame
){
u32 pgno; /* Database page number for frame */
@@ -66237,10 +61967,10 @@ static int walBeginShmUnreliable(Wal *pWal, int *pChanged){
**
** The useWal parameter is true to force the use of the WAL and disable
** the case where the WAL is bypassed because it has been completely
-** checkpointed. If useWal==0 then this routine calls walIndexReadHdr()
-** to make a copy of the wal-index header into pWal->hdr. If the
-** wal-index header has changed, *pChanged is set to 1 (as an indication
-** to the caller that the local page cache is obsolete and needs to be
+** checkpointed. If useWal==0 then this routine calls walIndexReadHdr()
+** to make a copy of the wal-index header into pWal->hdr. If the
+** wal-index header has changed, *pChanged is set to 1 (as an indication
+** to the caller that the local page cache is obsolete and needs to be
** flushed.) When useWal==1, the wal-index header is assumed to already
** be loaded and the pChanged parameter is unused.
**
@@ -66255,7 +61985,7 @@ static int walBeginShmUnreliable(Wal *pWal, int *pChanged){
** bad luck when there is lots of contention for the wal-index, but that
** possibility is so small that it can be safely neglected, we believe.
**
-** On success, this routine obtains a read lock on
+** On success, this routine obtains a read lock on
** WAL_READ_LOCK(pWal->readLock). The pWal->readLock integer is
** in the range 0 <= pWal->readLock < WAL_NREADER. If pWal->readLock==(-1)
** that means the Wal does not hold any read lock. The reader must not
@@ -66293,16 +62023,16 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){
**
** Circumstances that cause a RETRY should only last for the briefest
** instances of time. No I/O or other system calls are done while the
- ** locks are held, so the locks should not be held for very long. But
+ ** locks are held, so the locks should not be held for very long. But
** if we are unlucky, another process that is holding a lock might get
- ** paged out or take a page-fault that is time-consuming to resolve,
+ ** paged out or take a page-fault that is time-consuming to resolve,
** during the few nanoseconds that it is holding the lock. In that case,
** it might take longer than normal for the lock to free.
**
** After 5 RETRYs, we begin calling sqlite3OsSleep(). The first few
** calls to sqlite3OsSleep() have a delay of 1 microsecond. Really this
** is more of a scheduler yield than an actual delay. But on the 10th
- ** an subsequent retries, the delays start becoming longer and longer,
+ ** an subsequent retries, the delays start becoming longer and longer,
** so that on the 100th (and last) RETRY we delay for 323 milliseconds.
** The total delay time before giving up is less than 10 seconds.
*/
@@ -66333,9 +62063,9 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){
if( pWal->apWiData[0]==0 ){
/* This branch is taken when the xShmMap() method returns SQLITE_BUSY.
** We assume this is a transient condition, so return WAL_RETRY. The
- ** xShmMap() implementation used by the default unix and win32 VFS
- ** modules may return SQLITE_BUSY due to a race condition in the
- ** code that determines whether or not the shared-memory region
+ ** xShmMap() implementation used by the default unix and win32 VFS
+ ** modules may return SQLITE_BUSY due to a race condition in the
+ ** code that determines whether or not the shared-memory region
** must be zeroed before the requested page is returned.
*/
rc = WAL_RETRY;
@@ -66357,7 +62087,7 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){
assert( pWal->nWiData>0 );
assert( pWal->apWiData[0]!=0 );
pInfo = walCkptInfo(pWal);
- if( !useWal && pInfo->nBackfill==pWal->hdr.mxFrame
+ if( !useWal && AtomicLoad(&pInfo->nBackfill)==pWal->hdr.mxFrame
#ifdef SQLITE_ENABLE_SNAPSHOT
&& (pWal->pSnapshot==0 || pWal->hdr.mxFrame==0)
#endif
@@ -66376,7 +62106,7 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){
** snapshot. Since holding READ_LOCK(0) prevents a checkpoint from
** happening, this is usually correct.
**
- ** However, if frames have been appended to the log (or if the log
+ ** However, if frames have been appended to the log (or if the log
** is wrapped and written for that matter) before the READ_LOCK(0)
** is obtained, that is not necessarily true. A checkpointer may
** have started to backfill the appended frames but crashed before
@@ -66419,7 +62149,8 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){
for(i=1; iaReadMark+i,mxFrame);
+ AtomicStore(pInfo->aReadMark+i,mxFrame);
+ mxReadMark = mxFrame;
mxI = i;
walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1);
break;
@@ -66457,9 +62188,9 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){
** to read any frames earlier than minFrame from the wal file - they
** can be safely read directly from the database file.
**
- ** Because a ShmBarrier() call is made between taking the copy of
+ ** Because a ShmBarrier() call is made between taking the copy of
** nBackfill and checking that the wal-header in shared-memory still
- ** matches the one cached in pWal->hdr, it is guaranteed that the
+ ** matches the one cached in pWal->hdr, it is guaranteed that the
** checkpointer that set nBackfill was not working with a wal-index
** header newer than that cached in pWal->hdr. If it were, that could
** cause a problem. The checkpointer could omit to checkpoint
@@ -66487,15 +62218,15 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){
#ifdef SQLITE_ENABLE_SNAPSHOT
/*
-** Attempt to reduce the value of the WalCkptInfo.nBackfillAttempted
+** Attempt to reduce the value of the WalCkptInfo.nBackfillAttempted
** variable so that older snapshots can be accessed. To do this, loop
-** through all wal frames from nBackfillAttempted to (nBackfill+1),
+** through all wal frames from nBackfillAttempted to (nBackfill+1),
** comparing their content to the corresponding page with the database
** file, if any. Set nBackfillAttempted to the frame number of the
** first frame for which the wal file content matches the db file.
**
-** This is only really safe if the file-system is such that any page
-** writes made by earlier checkpointers were atomic operations, which
+** This is only really safe if the file-system is such that any page
+** writes made by earlier checkpointers were atomic operations, which
** is not always true. It is also possible that nBackfillAttempted
** may be left set to a value larger than expected, if a wal frame
** contains content that duplicate of an earlier version of the same
@@ -66523,7 +62254,7 @@ SQLITE_PRIVATE int sqlite3WalSnapshotRecover(Wal *pWal){
rc = SQLITE_NOMEM;
}else{
u32 i = pInfo->nBackfillAttempted;
- for(i=pInfo->nBackfillAttempted; i>pInfo->nBackfill; i--){
+ for(i=pInfo->nBackfillAttempted; i>AtomicLoad(&pInfo->nBackfill); i--){
WalHashLoc sLoc; /* Hash table location */
u32 pgno; /* Page number in db file */
i64 iDbOff; /* Offset of db file entry */
@@ -66578,12 +62309,35 @@ SQLITE_PRIVATE int sqlite3WalSnapshotRecover(Wal *pWal){
SQLITE_PRIVATE int sqlite3WalBeginReadTransaction(Wal *pWal, int *pChanged){
int rc; /* Return code */
int cnt = 0; /* Number of TryBeginRead attempts */
-
#ifdef SQLITE_ENABLE_SNAPSHOT
int bChanged = 0;
WalIndexHdr *pSnapshot = pWal->pSnapshot;
- if( pSnapshot && memcmp(pSnapshot, &pWal->hdr, sizeof(WalIndexHdr))!=0 ){
- bChanged = 1;
+#endif
+
+ assert( pWal->ckptLock==0 );
+
+#ifdef SQLITE_ENABLE_SNAPSHOT
+ if( pSnapshot ){
+ if( memcmp(pSnapshot, &pWal->hdr, sizeof(WalIndexHdr))!=0 ){
+ bChanged = 1;
+ }
+
+ /* It is possible that there is a checkpointer thread running
+ ** concurrent with this code. If this is the case, it may be that the
+ ** checkpointer has already determined that it will checkpoint
+ ** snapshot X, where X is later in the wal file than pSnapshot, but
+ ** has not yet set the pInfo->nBackfillAttempted variable to indicate
+ ** its intent. To avoid the race condition this leads to, ensure that
+ ** there is no checkpointer process by taking a shared CKPT lock
+ ** before checking pInfo->nBackfillAttempted. */
+ (void)walEnableBlocking(pWal);
+ rc = walLockShared(pWal, WAL_CKPT_LOCK);
+ walDisableBlocking(pWal);
+
+ if( rc!=SQLITE_OK ){
+ return rc;
+ }
+ pWal->ckptLock = 1;
}
#endif
@@ -66616,48 +62370,42 @@ SQLITE_PRIVATE int sqlite3WalBeginReadTransaction(Wal *pWal, int *pChanged){
assert( pWal->readLock>0 || pWal->hdr.mxFrame==0 );
assert( pInfo->aReadMark[pWal->readLock]<=pSnapshot->mxFrame );
- /* It is possible that there is a checkpointer thread running
- ** concurrent with this code. If this is the case, it may be that the
- ** checkpointer has already determined that it will checkpoint
- ** snapshot X, where X is later in the wal file than pSnapshot, but
- ** has not yet set the pInfo->nBackfillAttempted variable to indicate
- ** its intent. To avoid the race condition this leads to, ensure that
- ** there is no checkpointer process by taking a shared CKPT lock
- ** before checking pInfo->nBackfillAttempted.
- **
- ** TODO: Does the aReadMark[] lock prevent a checkpointer from doing
- ** this already?
- */
- rc = walLockShared(pWal, WAL_CKPT_LOCK);
-
- if( rc==SQLITE_OK ){
- /* Check that the wal file has not been wrapped. Assuming that it has
- ** not, also check that no checkpointer has attempted to checkpoint any
- ** frames beyond pSnapshot->mxFrame. If either of these conditions are
- ** true, return SQLITE_ERROR_SNAPSHOT. Otherwise, overwrite pWal->hdr
- ** with *pSnapshot and set *pChanged as appropriate for opening the
- ** snapshot. */
- if( !memcmp(pSnapshot->aSalt, pWal->hdr.aSalt, sizeof(pWal->hdr.aSalt))
- && pSnapshot->mxFrame>=pInfo->nBackfillAttempted
- ){
- assert( pWal->readLock>0 );
- memcpy(&pWal->hdr, pSnapshot, sizeof(WalIndexHdr));
- *pChanged = bChanged;
- }else{
- rc = SQLITE_ERROR_SNAPSHOT;
- }
-
- /* Release the shared CKPT lock obtained above. */
- walUnlockShared(pWal, WAL_CKPT_LOCK);
- pWal->minFrame = 1;
+ /* Check that the wal file has not been wrapped. Assuming that it has
+ ** not, also check that no checkpointer has attempted to checkpoint any
+ ** frames beyond pSnapshot->mxFrame. If either of these conditions are
+ ** true, return SQLITE_ERROR_SNAPSHOT. Otherwise, overwrite pWal->hdr
+ ** with *pSnapshot and set *pChanged as appropriate for opening the
+ ** snapshot. */
+ if( !memcmp(pSnapshot->aSalt, pWal->hdr.aSalt, sizeof(pWal->hdr.aSalt))
+ && pSnapshot->mxFrame>=pInfo->nBackfillAttempted
+ ){
+ assert( pWal->readLock>0 );
+ memcpy(&pWal->hdr, pSnapshot, sizeof(WalIndexHdr));
+ *pChanged = bChanged;
+ }else{
+ rc = SQLITE_ERROR_SNAPSHOT;
}
+ /* A client using a non-current snapshot may not ignore any frames
+ ** from the start of the wal file. This is because, for a system
+ ** where (minFrame < iSnapshot < maxFrame), a checkpointer may
+ ** have omitted to checkpoint a frame earlier than minFrame in
+ ** the file because there exists a frame after iSnapshot that
+ ** is the same database page. */
+ pWal->minFrame = 1;
if( rc!=SQLITE_OK ){
sqlite3WalEndReadTransaction(pWal);
}
}
}
+
+ /* Release the shared CKPT lock obtained above. */
+ if( pWal->ckptLock ){
+ assert( pSnapshot );
+ walUnlockShared(pWal, WAL_CKPT_LOCK);
+ pWal->ckptLock = 0;
+ }
#endif
return rc;
}
@@ -66697,8 +62445,8 @@ SQLITE_PRIVATE int sqlite3WalFindFrame(
/* If the "last page" field of the wal-index header snapshot is 0, then
** no data will be read from the wal under any circumstances. Return early
- ** in this case as an optimization. Likewise, if pWal->readLock==0,
- ** then the WAL is ignored by the reader so return early, as if the
+ ** in this case as an optimization. Likewise, if pWal->readLock==0,
+ ** then the WAL is ignored by the reader so return early, as if the
** WAL were empty.
*/
if( iLast==0 || (pWal->readLock==0 && pWal->bShmUnreliable==0) ){
@@ -66711,9 +62459,9 @@ SQLITE_PRIVATE int sqlite3WalFindFrame(
** hash table (each hash table indexes up to HASHTABLE_NPAGE frames).
**
** This code might run concurrently to the code in walIndexAppend()
- ** that adds entries to the wal-index (and possibly to this hash
- ** table). This means the value just read from the hash
- ** slot (aHash[iKey]) may have been added before or after the
+ ** that adds entries to the wal-index (and possibly to this hash
+ ** table). This means the value just read from the hash
+ ** slot (aHash[iKey]) may have been added before or after the
** current read transaction was opened. Values added after the
** read transaction was opened may have been written incorrectly -
** i.e. these slots may contain garbage data. However, we assume
@@ -66721,13 +62469,13 @@ SQLITE_PRIVATE int sqlite3WalFindFrame(
** opened remain unmodified.
**
** For the reasons above, the if(...) condition featured in the inner
- ** loop of the following block is more stringent that would be required
+ ** loop of the following block is more stringent that would be required
** if we had exclusive access to the hash-table:
**
- ** (aPgno[iFrame]==pgno):
+ ** (aPgno[iFrame]==pgno):
** This condition filters out normal hash-table collisions.
**
- ** (iFrame<=iLast):
+ ** (iFrame<=iLast):
** This condition filters out entries that were added to the hash
** table after the current read-transaction had started.
*/
@@ -66737,14 +62485,15 @@ SQLITE_PRIVATE int sqlite3WalFindFrame(
int iKey; /* Hash slot index */
int nCollide; /* Number of hash collisions remaining */
int rc; /* Error code */
+ u32 iH;
rc = walHashGet(pWal, iHash, &sLoc);
if( rc!=SQLITE_OK ){
return rc;
}
nCollide = HASHTABLE_NSLOT;
- for(iKey=walHash(pgno); sLoc.aHash[iKey]; iKey=walNextHash(iKey)){
- u32 iH = sLoc.aHash[iKey];
+ iKey = walHash(pgno);
+ while( (iH = AtomicLoad(&sLoc.aHash[iKey]))!=0 ){
u32 iFrame = iH + sLoc.iZero;
if( iFrame<=iLast && iFrame>=pWal->minFrame && sLoc.aPgno[iH]==pgno ){
assert( iFrame>iRead || CORRUPT_DB );
@@ -66753,6 +62502,7 @@ SQLITE_PRIVATE int sqlite3WalFindFrame(
if( (nCollide--)==0 ){
return SQLITE_CORRUPT_BKPT;
}
+ iKey = walNextHash(iKey);
}
if( iRead ) break;
}
@@ -66801,7 +62551,7 @@ SQLITE_PRIVATE int sqlite3WalReadFrame(
return sqlite3OsRead(pWal->pWalFd, pOut, (nOut>sz ? sz : nOut), iOffset);
}
-/*
+/*
** Return the size of the database in pages (or zero, if unknown).
*/
SQLITE_PRIVATE Pgno sqlite3WalDbsize(Wal *pWal){
@@ -66812,7 +62562,7 @@ SQLITE_PRIVATE Pgno sqlite3WalDbsize(Wal *pWal){
}
-/*
+/*
** This function starts a write transaction on the WAL.
**
** A read transaction must have already been started by a prior call
@@ -66828,6 +62578,16 @@ SQLITE_PRIVATE Pgno sqlite3WalDbsize(Wal *pWal){
SQLITE_PRIVATE int sqlite3WalBeginWriteTransaction(Wal *pWal){
int rc;
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+ /* If the write-lock is already held, then it was obtained before the
+ ** read-transaction was even opened, making this call a no-op.
+ ** Return early. */
+ if( pWal->writeLock ){
+ assert( !memcmp(&pWal->hdr,(void *)walIndexHdr(pWal),sizeof(WalIndexHdr)) );
+ return SQLITE_OK;
+ }
+#endif
+
/* Cannot start a write transaction without first holding a read
** transaction. */
assert( pWal->readLock>=0 );
@@ -66890,18 +62650,18 @@ SQLITE_PRIVATE int sqlite3WalUndo(Wal *pWal, int (*xUndo)(void *, Pgno), void *p
if( ALWAYS(pWal->writeLock) ){
Pgno iMax = pWal->hdr.mxFrame;
Pgno iFrame;
-
+
/* Restore the clients cache of the wal-index header to the state it
- ** was in before the client began writing to the database.
+ ** was in before the client began writing to the database.
*/
memcpy(&pWal->hdr, (void *)walIndexHdr(pWal), sizeof(WalIndexHdr));
- for(iFrame=pWal->hdr.mxFrame+1;
- ALWAYS(rc==SQLITE_OK) && iFrame<=iMax;
+ for(iFrame=pWal->hdr.mxFrame+1;
+ ALWAYS(rc==SQLITE_OK) && iFrame<=iMax;
iFrame++
){
/* This call cannot fail. Unless the page for which the page number
- ** is passed as the second argument is (a) in the cache and
+ ** is passed as the second argument is (a) in the cache and
** (b) has an outstanding reference, then xUndo is either a no-op
** (if (a) is false) or simply expels the page from the cache (if (b)
** is false).
@@ -66919,10 +62679,10 @@ SQLITE_PRIVATE int sqlite3WalUndo(Wal *pWal, int (*xUndo)(void *, Pgno), void *p
return rc;
}
-/*
-** Argument aWalData must point to an array of WAL_SAVEPOINT_NDATA u32
-** values. This function populates the array with values required to
-** "rollback" the write position of the WAL handle back to the current
+/*
+** Argument aWalData must point to an array of WAL_SAVEPOINT_NDATA u32
+** values. This function populates the array with values required to
+** "rollback" the write position of the WAL handle back to the current
** point in the event of a savepoint rollback (via WalSavepointUndo()).
*/
SQLITE_PRIVATE void sqlite3WalSavepoint(Wal *pWal, u32 *aWalData){
@@ -66933,7 +62693,7 @@ SQLITE_PRIVATE void sqlite3WalSavepoint(Wal *pWal, u32 *aWalData){
aWalData[3] = pWal->nCkpt;
}
-/*
+/*
** Move the write position of the WAL back to the point identified by
** the values in the aWalData[] array. aWalData must point to an array
** of WAL_SAVEPOINT_NDATA u32 values that has been previously populated
@@ -67073,11 +62833,7 @@ static int walWriteOneFrame(
int rc; /* Result code from subfunctions */
void *pData; /* Data actually written */
u8 aFrame[WAL_FRAME_HDRSIZE]; /* Buffer to assemble frame-header in */
-#if defined(SQLITE_HAS_CODEC)
- if( (pData = sqlite3PagerCodec(pPage))==0 ) return SQLITE_NOMEM_BKPT;
-#else
pData = pPage->pData;
-#endif
walEncodeFrame(p->pWal, pPage->pgno, nTruncate, pData, aFrame);
rc = walWriteToLog(p, aFrame, sizeof(aFrame), iOffset);
if( rc ) return rc;
@@ -67139,7 +62895,7 @@ static int walRewriteChecksums(Wal *pWal, u32 iLast){
return rc;
}
-/*
+/*
** Write a set of frames to the log. The caller must hold the write-lock
** on the log file (obtained using sqlite3WalBeginWriteTransaction()).
*/
@@ -67206,7 +62962,7 @@ SQLITE_PRIVATE int sqlite3WalFrames(
walChecksumBytes(1, aWalHdr, WAL_HDRSIZE-2*4, 0, aCksum);
sqlite3Put4byte(&aWalHdr[24], aCksum[0]);
sqlite3Put4byte(&aWalHdr[28], aCksum[1]);
-
+
pWal->szPage = szPage;
pWal->hdr.bigEndCksum = SQLITE_BIGENDIAN;
pWal->hdr.aFrameCksum[0] = aCksum[0];
@@ -67248,7 +63004,7 @@ SQLITE_PRIVATE int sqlite3WalFrames(
/* Check if this page has already been written into the wal file by
** the current transaction. If so, overwrite the existing frame and
- ** set Wal.writeLock to WAL_WRITELOCK_RECKSUM - indicating that
+ ** set Wal.writeLock to WAL_WRITELOCK_RECKSUM - indicating that
** checksums must be recomputed when the transaction is committed. */
if( iFirst && (p->pDirty || isCommit==0) ){
u32 iWrite = 0;
@@ -67260,11 +63016,7 @@ SQLITE_PRIVATE int sqlite3WalFrames(
if( pWal->iReCksum==0 || iWriteiReCksum ){
pWal->iReCksum = iWrite;
}
-#if defined(SQLITE_HAS_CODEC)
- if( (pData = sqlite3PagerCodec(p))==0 ) return SQLITE_NOMEM;
-#else
pData = p->pData;
-#endif
rc = sqlite3OsWrite(pWal->pWalFd, pData, szPage, iOff);
if( rc ) return rc;
p->flags &= ~PGHDR_WAL_APPEND;
@@ -67336,7 +63088,7 @@ SQLITE_PRIVATE int sqlite3WalFrames(
pWal->truncateOnCommit = 0;
}
- /* Append data to the wal-index. It is not necessary to lock the
+ /* Append data to the wal-index. It is not necessary to lock the
** wal-index to do this as the SQLITE_SHM_WRITE lock held on the wal-index
** guarantees that there are no other writers, and no data that may
** be in use by existing readers is being overwritten.
@@ -67375,7 +63127,7 @@ SQLITE_PRIVATE int sqlite3WalFrames(
return rc;
}
-/*
+/*
** This routine is called to implement sqlite3_wal_checkpoint() and
** related interfaces.
**
@@ -67412,45 +63164,52 @@ SQLITE_PRIVATE int sqlite3WalCheckpoint(
if( pWal->readOnly ) return SQLITE_READONLY;
WALTRACE(("WAL%p: checkpoint begins\n", pWal));
- /* IMPLEMENTATION-OF: R-62028-47212 All calls obtain an exclusive
- ** "checkpoint" lock on the database file. */
- rc = walLockExclusive(pWal, WAL_CKPT_LOCK, 1);
- if( rc ){
- /* EVIDENCE-OF: R-10421-19736 If any other process is running a
- ** checkpoint operation at the same time, the lock cannot be obtained and
- ** SQLITE_BUSY is returned.
- ** EVIDENCE-OF: R-53820-33897 Even if there is a busy-handler configured,
- ** it will not be invoked in this case.
- */
- testcase( rc==SQLITE_BUSY );
- testcase( xBusy!=0 );
- return rc;
- }
- pWal->ckptLock = 1;
+ /* Enable blocking locks, if possible. If blocking locks are successfully
+ ** enabled, set xBusy2=0 so that the busy-handler is never invoked. */
+ sqlite3WalDb(pWal, db);
+ (void)walEnableBlocking(pWal);
- /* IMPLEMENTATION-OF: R-59782-36818 The SQLITE_CHECKPOINT_FULL, RESTART and
- ** TRUNCATE modes also obtain the exclusive "writer" lock on the database
- ** file.
- **
- ** EVIDENCE-OF: R-60642-04082 If the writer lock cannot be obtained
- ** immediately, and a busy-handler is configured, it is invoked and the
- ** writer lock retried until either the busy-handler returns 0 or the
- ** lock is successfully obtained.
+ /* IMPLEMENTATION-OF: R-62028-47212 All calls obtain an exclusive
+ ** "checkpoint" lock on the database file.
+ ** EVIDENCE-OF: R-10421-19736 If any other process is running a
+ ** checkpoint operation at the same time, the lock cannot be obtained and
+ ** SQLITE_BUSY is returned.
+ ** EVIDENCE-OF: R-53820-33897 Even if there is a busy-handler configured,
+ ** it will not be invoked in this case.
*/
- if( eMode!=SQLITE_CHECKPOINT_PASSIVE ){
- rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_WRITE_LOCK, 1);
- if( rc==SQLITE_OK ){
- pWal->writeLock = 1;
- }else if( rc==SQLITE_BUSY ){
- eMode2 = SQLITE_CHECKPOINT_PASSIVE;
- xBusy2 = 0;
- rc = SQLITE_OK;
+ rc = walLockExclusive(pWal, WAL_CKPT_LOCK, 1);
+ testcase( rc==SQLITE_BUSY );
+ testcase( rc!=SQLITE_OK && xBusy2!=0 );
+ if( rc==SQLITE_OK ){
+ pWal->ckptLock = 1;
+
+ /* IMPLEMENTATION-OF: R-59782-36818 The SQLITE_CHECKPOINT_FULL, RESTART and
+ ** TRUNCATE modes also obtain the exclusive "writer" lock on the database
+ ** file.
+ **
+ ** EVIDENCE-OF: R-60642-04082 If the writer lock cannot be obtained
+ ** immediately, and a busy-handler is configured, it is invoked and the
+ ** writer lock retried until either the busy-handler returns 0 or the
+ ** lock is successfully obtained.
+ */
+ if( eMode!=SQLITE_CHECKPOINT_PASSIVE ){
+ rc = walBusyLock(pWal, xBusy2, pBusyArg, WAL_WRITE_LOCK, 1);
+ if( rc==SQLITE_OK ){
+ pWal->writeLock = 1;
+ }else if( rc==SQLITE_BUSY ){
+ eMode2 = SQLITE_CHECKPOINT_PASSIVE;
+ xBusy2 = 0;
+ rc = SQLITE_OK;
+ }
}
}
+
/* Read the wal-index header. */
if( rc==SQLITE_OK ){
+ walDisableBlocking(pWal);
rc = walIndexReadHdr(pWal, &isChanged);
+ (void)walEnableBlocking(pWal);
if( isChanged && pWal->pDbFd->pMethods->iVersion>=3 ){
sqlite3OsUnfetch(pWal->pDbFd, 0, 0);
}
@@ -67473,7 +63232,7 @@ SQLITE_PRIVATE int sqlite3WalCheckpoint(
}
if( isChanged ){
- /* If a new wal-index header was loaded before the checkpoint was
+ /* If a new wal-index header was loaded before the checkpoint was
** performed, then the pager-cache associated with pWal is now
** out of date. So zero the cached wal-index header to ensure that
** next time the pager opens a snapshot on this database it knows that
@@ -67482,11 +63241,19 @@ SQLITE_PRIVATE int sqlite3WalCheckpoint(
memset(&pWal->hdr, 0, sizeof(WalIndexHdr));
}
+ walDisableBlocking(pWal);
+ sqlite3WalDb(pWal, 0);
+
/* Release the locks. */
sqlite3WalEndWriteTransaction(pWal);
- walUnlockExclusive(pWal, WAL_CKPT_LOCK, 1);
- pWal->ckptLock = 0;
+ if( pWal->ckptLock ){
+ walUnlockExclusive(pWal, WAL_CKPT_LOCK, 1);
+ pWal->ckptLock = 0;
+ }
WALTRACE(("WAL%p: checkpoint %s\n", pWal, rc ? "failed" : "ok"));
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+ if( rc==SQLITE_BUSY_TIMEOUT ) rc = SQLITE_BUSY;
+#endif
return (rc==SQLITE_OK && eMode!=eMode2 ? SQLITE_BUSY : rc);
}
@@ -67516,7 +63283,7 @@ SQLITE_PRIVATE int sqlite3WalCallback(Wal *pWal){
** operation must occur while the pager is still holding the exclusive
** lock on the main database file.
**
-** If op is one, then change from locking_mode=NORMAL into
+** If op is one, then change from locking_mode=NORMAL into
** locking_mode=EXCLUSIVE. This means that the pWal->readLock must
** be released. Return 1 if the transition is made and 0 if the
** WAL is already in exclusive-locking mode - meaning that this
@@ -67533,8 +63300,8 @@ SQLITE_PRIVATE int sqlite3WalExclusiveMode(Wal *pWal, int op){
assert( pWal->writeLock==0 );
assert( pWal->exclusiveMode!=WAL_HEAPMEMORY_MODE || op==-1 );
- /* pWal->readLock is usually set, but might be -1 if there was a
- ** prior error while attempting to acquire are read-lock. This cannot
+ /* pWal->readLock is usually set, but might be -1 if there was a
+ ** prior error while attempting to acquire are read-lock. This cannot
** happen if the connection is actually in exclusive mode (as no xShmLock
** locks are taken in this case). Nor should the pager attempt to
** upgrade to exclusive-mode following such an error.
@@ -67565,10 +63332,10 @@ SQLITE_PRIVATE int sqlite3WalExclusiveMode(Wal *pWal, int op){
return rc;
}
-/*
+/*
** Return true if the argument is non-NULL and the WAL module is using
** heap-memory for the wal-index. Otherwise, if the argument is NULL or the
-** WAL module is using shared-memory, return false.
+** WAL module is using shared-memory, return false.
*/
SQLITE_PRIVATE int sqlite3WalHeapMemory(Wal *pWal){
return (pWal && pWal->exclusiveMode==WAL_HEAPMEMORY_MODE );
@@ -67603,11 +63370,14 @@ SQLITE_PRIVATE int sqlite3WalSnapshotGet(Wal *pWal, sqlite3_snapshot **ppSnapsho
/* Try to open on pSnapshot when the next read-transaction starts
*/
-SQLITE_PRIVATE void sqlite3WalSnapshotOpen(Wal *pWal, sqlite3_snapshot *pSnapshot){
+SQLITE_PRIVATE void sqlite3WalSnapshotOpen(
+ Wal *pWal,
+ sqlite3_snapshot *pSnapshot
+){
pWal->pSnapshot = (WalIndexHdr*)pSnapshot;
}
-/*
+/*
** Return a +ve value if snapshot p1 is newer than p2. A -ve value if
** p1 is older than p2 and zero if p1 and p2 are the same snapshot.
*/
@@ -67627,7 +63397,7 @@ SQLITE_API int sqlite3_snapshot_cmp(sqlite3_snapshot *p1, sqlite3_snapshot *p2){
/*
** The caller currently has a read transaction open on the database.
** This function takes a SHARED lock on the CHECKPOINTER slot and then
-** checks if the snapshot passed as the second argument is still
+** checks if the snapshot passed as the second argument is still
** available. If so, SQLITE_OK is returned.
**
** If the snapshot is not available, SQLITE_ERROR is returned. Or, if
@@ -67734,16 +63504,16 @@ SQLITE_PRIVATE sqlite3_file *sqlite3WalFile(Wal *pWal){
** on Ptr(N) and its subpages have values greater than Key(N-1). And
** so forth.
**
-** Finding a particular key requires reading O(log(M)) pages from the
+** Finding a particular key requires reading O(log(M)) pages from the
** disk where M is the number of entries in the tree.
**
-** In this implementation, a single file can hold one or more separate
+** In this implementation, a single file can hold one or more separate
** BTrees. Each BTree is identified by the index of its root page. The
** key and data for any entry are combined to form the "payload". A
** fixed amount of payload can be carried directly on the database
** page. If the payload is larger than the preset amount then surplus
** bytes are stored on overflow pages. The payload for an entry
-** and the preceding pointer are combined to form a "Cell". Each
+** and the preceding pointer are combined to form a "Cell". Each
** page has a small header which contains the Ptr(N) pointer and other
** information such as the size of key and data.
**
@@ -67873,7 +63643,7 @@ SQLITE_PRIVATE sqlite3_file *sqlite3WalFile(Wal *pWal){
** contiguous or in order, but cell pointers are contiguous and in order.
**
** Cell content makes use of variable length integers. A variable
-** length integer is 1 to 9 bytes where the lower 7 bits of each
+** length integer is 1 to 9 bytes where the lower 7 bits of each
** byte are used. The integer consists of all bytes that have bit 8 set and
** the first byte with bit 8 clear. The most significant byte of the integer
** appears first. A variable-length integer may not be more than 9 bytes long.
@@ -67946,7 +63716,7 @@ typedef struct CellInfo CellInfo;
** -DSQLITE_FILE_HEADER="..." on the compiler command-line. The
** header must be exactly 16 bytes including the zero-terminator so
** the string itself should be 15 characters long. If you change
-** the header, then your custom library will not be able to read
+** the header, then your custom library will not be able to read
** databases generated by the standard tools and the standard tools
** will not be able to read databases created by your custom library.
*/
@@ -68009,7 +63779,7 @@ struct MemPage {
/*
** A linked list of the following structures is stored at BtShared.pLock.
-** Locks are added (or upgraded from READ_LOCK to WRITE_LOCK) when a cursor
+** Locks are added (or upgraded from READ_LOCK to WRITE_LOCK) when a cursor
** is opened on the table with root page BtShared.iTable. Locks are removed
** from this list when a transaction is committed or rolled back, or when
** a btree handle is closed.
@@ -68033,7 +63803,7 @@ struct BtLock {
** see the internals of this structure and only deals with pointers to
** this structure.
**
-** For some database files, the same underlying database cache might be
+** For some database files, the same underlying database cache might be
** shared between multiple connections. In that case, each connection
** has it own instance of this object. But each instance of this object
** points to the same BtShared object. The database cache and the
@@ -68041,7 +63811,7 @@ struct BtLock {
** the BtShared object.
**
** All fields in this structure are accessed under sqlite3.mutex.
-** The pBt pointer itself may not be changed while there exists cursors
+** The pBt pointer itself may not be changed while there exists cursors
** in the referenced BtShared that point back to this Btree since those
** cursors have to go through this Btree to find their BtShared and
** they often do so without holding sqlite3.mutex.
@@ -68076,7 +63846,7 @@ struct Btree {
/*
** An instance of this object represents a single database file.
-**
+**
** A single database file can be in use at the same time by two
** or more database connections. When two or more connections are
** sharing the same database file, each connection has it own
@@ -68086,7 +63856,7 @@ struct Btree {
**
** Fields in this structure are accessed under the BtShared.mutex
** mutex, except for nRef and pNext which are accessed under the
-** global SQLITE_MUTEX_STATIC_MASTER mutex. The pPager field
+** global SQLITE_MUTEX_STATIC_MAIN mutex. The pPager field
** may not be modified once it is initially set as long as nRef>0.
** The pSchema field may be set once under BtShared.mutex and
** thereafter is unchanged as long as nRef>0.
@@ -68122,9 +63892,7 @@ struct BtShared {
#endif
u8 inTransaction; /* Transaction state */
u8 max1bytePayload; /* Maximum first byte of cell for a 1-byte payload */
-#ifdef SQLITE_HAS_CODEC
- u8 optimalReserve; /* Desired amount of reserved space per page */
-#endif
+ u8 nReserveWanted; /* Desired number of extra bytes per page */
u16 btsFlags; /* Boolean parameters. See BTS_* macros below */
u16 maxLocal; /* Maximum local payload in non-LEAFDATA tables */
u16 minLocal; /* Minimum local payload in non-LEAFDATA tables */
@@ -68196,7 +63964,7 @@ struct CellInfo {
** particular database connection identified BtCursor.pBtree.db.
**
** Fields in this structure are accessed under the BtShared.mutex
-** found at self->pBt->mutex.
+** found at self->pBt->mutex.
**
** skipNext meaning:
** The meaning of skipNext depends on the value of eState:
@@ -68247,12 +64015,13 @@ struct BtCursor {
#define BTCF_AtLast 0x08 /* Cursor is pointing ot the last entry */
#define BTCF_Incrblob 0x10 /* True if an incremental I/O handle */
#define BTCF_Multiple 0x20 /* Maybe another cursor on the same btree */
+#define BTCF_Pinned 0x40 /* Cursor is busy and cannot be moved */
/*
** Potential values for BtCursor.eState.
**
** CURSOR_INVALID:
-** Cursor does not point to a valid entry. This can happen (for example)
+** Cursor does not point to a valid entry. This can happen (for example)
** because the table is empty or because BtreeCursorFirst() has not been
** called.
**
@@ -68265,9 +64034,9 @@ struct BtCursor {
** operation should be a no-op.
**
** CURSOR_REQUIRESEEK:
-** The table that this cursor was opened on still exists, but has been
+** The table that this cursor was opened on still exists, but has been
** modified since the cursor was last used. The cursor position is saved
-** in variables BtCursor.pKey and BtCursor.nKey. When a cursor is in
+** in variables BtCursor.pKey and BtCursor.nKey. When a cursor is in
** this state, restoreCursorPosition() can be called to attempt to
** seek the cursor to the saved position.
**
@@ -68284,13 +64053,13 @@ struct BtCursor {
#define CURSOR_REQUIRESEEK 3
#define CURSOR_FAULT 4
-/*
+/*
** The database page the PENDING_BYTE occupies. This page is never used.
*/
# define PENDING_BYTE_PAGE(pBt) PAGER_MJ_PGNO(pBt)
/*
-** These macros define the location of the pointer-map entry for a
+** These macros define the location of the pointer-map entry for a
** database page. The first argument to each is the number of usable
** bytes on each page of the database (often 1024). The second is the
** page number to look up in the pointer map.
@@ -68325,10 +64094,10 @@ struct BtCursor {
** PTRMAP_ROOTPAGE: The database page is a root-page. The page-number is not
** used in this case.
**
-** PTRMAP_FREEPAGE: The database page is an unused (free) page. The page-number
+** PTRMAP_FREEPAGE: The database page is an unused (free) page. The page-number
** is not used in this case.
**
-** PTRMAP_OVERFLOW1: The database page is the first page in a list of
+** PTRMAP_OVERFLOW1: The database page is the first page in a list of
** overflow pages. The page number identifies the page that
** contains the cell with a pointer to this overflow page.
**
@@ -68350,13 +64119,13 @@ struct BtCursor {
*/
#define btreeIntegrity(p) \
assert( p->pBt->inTransaction!=TRANS_NONE || p->pBt->nTransaction==0 ); \
- assert( p->pBt->inTransaction>=p->inTrans );
+ assert( p->pBt->inTransaction>=p->inTrans );
/*
** The ISAUTOVACUUM macro is used within balance_nonroot() to determine
** if the database supports auto-vacuum or not. Because it is used
-** within an expression that is an argument to another macro
+** within an expression that is an argument to another macro
** (sqliteMallocRaw), it is not possible to use conditional compilation.
** So, this macro is defined instead.
*/
@@ -68373,8 +64142,8 @@ struct BtCursor {
**
** The aRef[] array is allocated so that there is 1 bit for each page in
** the database. As the integrity-check proceeds, for each page used in
-** the database the corresponding bit is set. This allows integrity-check to
-** detect pages that are used twice and orphaned pages (both of which
+** the database the corresponding bit is set. This allows integrity-check to
+** detect pages that are used twice and orphaned pages (both of which
** indicate corruption).
*/
typedef struct IntegrityCk IntegrityCk;
@@ -68385,9 +64154,10 @@ struct IntegrityCk {
Pgno nPage; /* Number of pages in the database */
int mxErr; /* Stop accumulating errors when this reaches zero */
int nErr; /* Number of messages written to zErrMsg so far */
- int mallocFailed; /* A memory allocation error has occurred */
+ int bOomFault; /* A memory allocation error has occurred */
const char *zPfx; /* Error message prefix */
- int v1, v2; /* Values for up to two %d fields in zPfx */
+ Pgno v1; /* Value for first %u substitution in zPfx */
+ int v2; /* Value for second %d substitution in zPfx */
StrAccum errMsg; /* Accumulate the error message text here */
u32 *heap; /* Min-heap used for analyzing cell coverage */
sqlite3 *db; /* Database connection running the check */
@@ -68691,10 +64461,10 @@ SQLITE_PRIVATE void sqlite3BtreeEnterAll(sqlite3 *db){
#ifndef SQLITE_OMIT_INCRBLOB
/*
-** Enter a mutex on a Btree given a cursor owned by that Btree.
+** Enter a mutex on a Btree given a cursor owned by that Btree.
**
-** These entry points are used by incremental I/O only. Enter() is required
-** any time OMIT_SHARED_CACHE is not defined, regardless of whether or not
+** These entry points are used by incremental I/O only. Enter() is required
+** any time OMIT_SHARED_CACHE is not defined, regardless of whether or not
** the build is threadsafe. Leave() is only required by threadsafe builds.
*/
SQLITE_PRIVATE void sqlite3BtreeEnterCursor(BtCursor *pCur){
@@ -68764,7 +64534,7 @@ int sqlite3BtreeTrace=1; /* True to enable tracing */
#define BTALLOC_LE 2 /* Allocate any page <= the parameter */
/*
-** Macro IfNotOmitAV(x) returns (x) if SQLITE_OMIT_AUTOVACUUM is not
+** Macro IfNotOmitAV(x) returns (x) if SQLITE_OMIT_AUTOVACUUM is not
** defined, or 0 if it is. For example:
**
** bIncrVacuum = IfNotOmitAV(pBtShared->incrVacuum);
@@ -68779,10 +64549,10 @@ int sqlite3BtreeTrace=1; /* True to enable tracing */
/*
** A list of BtShared objects that are eligible for participation
** in shared cache. This variable has file scope during normal builds,
-** but the test harness needs to access it so we make it global for
+** but the test harness needs to access it so we make it global for
** test builds.
**
-** Access to this variable is protected by SQLITE_MUTEX_STATIC_MASTER.
+** Access to this variable is protected by SQLITE_MUTEX_STATIC_MAIN.
*/
#ifdef SQLITE_TEST
SQLITE_PRIVATE BtShared *SQLITE_WSD sqlite3SharedCacheList = 0;
@@ -68814,7 +64584,7 @@ SQLITE_API int sqlite3_enable_shared_cache(int enable){
** manipulate entries in the BtShared.pLock linked list used to store
** shared-cache table level locks. If the library is compiled with the
** shared-cache feature disabled, then there is only ever one user
- ** of each BtShared structure and so this locking is not necessary.
+ ** of each BtShared structure and so this locking is not necessary.
** So define the lock related functions as no-ops.
*/
#define querySharedCacheTableLock(a,b,c) SQLITE_OK
@@ -68859,15 +64629,15 @@ int corruptPageError(int lineno, MemPage *p){
/*
**** This function is only used as part of an assert() statement. ***
**
-** Check to see if pBtree holds the required locks to read or write to the
+** Check to see if pBtree holds the required locks to read or write to the
** table with root page iRoot. Return 1 if it does and 0 if not.
**
-** For example, when writing to a table with root-page iRoot via
+** For example, when writing to a table with root-page iRoot via
** Btree connection pBtree:
**
** assert( hasSharedCacheTableLock(pBtree, iRoot, 0, WRITE_LOCK) );
**
-** When writing to an index that resides in a sharable database, the
+** When writing to an index that resides in a sharable database, the
** caller should have first obtained a lock specifying the root page of
** the corresponding table. This makes things a bit more complicated,
** as this module treats each table as a separate structure. To determine
@@ -68889,7 +64659,7 @@ static int hasSharedCacheTableLock(
BtLock *pLock;
/* If this database is not shareable, or if the client is reading
- ** and has the read-uncommitted flag set, then no lock is required.
+ ** and has the read-uncommitted flag set, then no lock is required.
** Return true immediately.
*/
if( (pBtree->sharable==0)
@@ -68913,29 +64683,31 @@ static int hasSharedCacheTableLock(
** table. */
if( isIndex ){
HashElem *p;
+ int bSeen = 0;
for(p=sqliteHashFirst(&pSchema->idxHash); p; p=sqliteHashNext(p)){
Index *pIdx = (Index *)sqliteHashData(p);
if( pIdx->tnum==(int)iRoot ){
- if( iTab ){
+ if( bSeen ){
/* Two or more indexes share the same root page. There must
** be imposter tables. So just return true. The assert is not
** useful in that case. */
return 1;
}
iTab = pIdx->pTable->tnum;
+ bSeen = 1;
}
}
}else{
iTab = iRoot;
}
- /* Search for the required lock. Either a write-lock on root-page iTab, a
+ /* Search for the required lock. Either a write-lock on root-page iTab, a
** write-lock on the schema table, or (if the client is reading) a
** read-lock on iTab will suffice. Return 1 if any of these are found. */
for(pLock=pBtree->pBt->pLock; pLock; pLock=pLock->pNext){
- if( pLock->pBtree==pBtree
+ if( pLock->pBtree==pBtree
&& (pLock->iTable==iTab || (pLock->eLock==WRITE_LOCK && pLock->iTable==1))
- && pLock->eLock>=eLockType
+ && pLock->eLock>=eLockType
){
return 1;
}
@@ -68968,7 +64740,7 @@ static int hasSharedCacheTableLock(
static int hasReadConflicts(Btree *pBtree, Pgno iRoot){
BtCursor *p;
for(p=pBtree->pBt->pCursor; p; p=p->pNext){
- if( p->pgnoRoot==iRoot
+ if( p->pgnoRoot==iRoot
&& p->pBtree!=pBtree
&& 0==(p->pBtree->db->flags & SQLITE_ReadUncommit)
){
@@ -68980,7 +64752,7 @@ static int hasReadConflicts(Btree *pBtree, Pgno iRoot){
#endif /* #ifdef SQLITE_DEBUG */
/*
-** Query to see if Btree handle p may obtain a lock of type eLock
+** Query to see if Btree handle p may obtain a lock of type eLock
** (READ_LOCK or WRITE_LOCK) on the table with root-page iTab. Return
** SQLITE_OK if the lock may be obtained (by calling
** setSharedCacheTableLock()), or SQLITE_LOCKED if not.
@@ -68993,14 +64765,14 @@ static int querySharedCacheTableLock(Btree *p, Pgno iTab, u8 eLock){
assert( eLock==READ_LOCK || eLock==WRITE_LOCK );
assert( p->db!=0 );
assert( !(p->db->flags&SQLITE_ReadUncommit)||eLock==WRITE_LOCK||iTab==1 );
-
+
/* If requesting a write-lock, then the Btree must have an open write
- ** transaction on this file. And, obviously, for this to be so there
+ ** transaction on this file. And, obviously, for this to be so there
** must be an open write transaction on the file itself.
*/
assert( eLock==READ_LOCK || (p==pBt->pWriter && p->inTrans==TRANS_WRITE) );
assert( eLock==READ_LOCK || pBt->inTransaction==TRANS_WRITE );
-
+
/* This routine is a no-op if the shared-cache is not enabled */
if( !p->sharable ){
return SQLITE_OK;
@@ -69015,7 +64787,7 @@ static int querySharedCacheTableLock(Btree *p, Pgno iTab, u8 eLock){
}
for(pIter=pBt->pLock; pIter; pIter=pIter->pNext){
- /* The condition (pIter->eLock!=eLock) in the following if(...)
+ /* The condition (pIter->eLock!=eLock) in the following if(...)
** statement is a simplification of:
**
** (eLock==WRITE_LOCK || pIter->eLock==WRITE_LOCK)
@@ -69042,7 +64814,7 @@ static int querySharedCacheTableLock(Btree *p, Pgno iTab, u8 eLock){
#ifndef SQLITE_OMIT_SHARED_CACHE
/*
** Add a lock on the table with root-page iTable to the shared-btree used
-** by Btree handle p. Parameter eLock must be either READ_LOCK or
+** by Btree handle p. Parameter eLock must be either READ_LOCK or
** WRITE_LOCK.
**
** This function assumes the following:
@@ -69054,7 +64826,7 @@ static int querySharedCacheTableLock(Btree *p, Pgno iTab, u8 eLock){
** with the requested lock (i.e. querySharedCacheTableLock() has
** already been called and returned SQLITE_OK).
**
-** SQLITE_OK is returned if the lock is added successfully. SQLITE_NOMEM
+** SQLITE_OK is returned if the lock is added successfully. SQLITE_NOMEM
** is returned if a malloc attempt fails.
*/
static int setSharedCacheTableLock(Btree *p, Pgno iTable, u8 eLock){
@@ -69068,11 +64840,11 @@ static int setSharedCacheTableLock(Btree *p, Pgno iTable, u8 eLock){
/* A connection with the read-uncommitted flag set will never try to
** obtain a read-lock using this function. The only read-lock obtained
- ** by a connection in read-uncommitted mode is on the sqlite_master
+ ** by a connection in read-uncommitted mode is on the sqlite_schema
** table, and that lock is obtained in BtreeBeginTrans(). */
assert( 0==(p->db->flags&SQLITE_ReadUncommit) || eLock==WRITE_LOCK );
- /* This function should only be called on a sharable b-tree after it
+ /* This function should only be called on a sharable b-tree after it
** has been determined that no other b-tree holds a conflicting lock. */
assert( p->sharable );
assert( SQLITE_OK==querySharedCacheTableLock(p, iTable, eLock) );
@@ -69117,7 +64889,7 @@ static int setSharedCacheTableLock(Btree *p, Pgno iTable, u8 eLock){
** Release all the table locks (locks obtained via calls to
** the setSharedCacheTableLock() procedure) held by Btree object p.
**
-** This function assumes that Btree p has an open read or write
+** This function assumes that Btree p has an open read or write
** transaction. If it does not, then the BTS_PENDING flag
** may be incorrectly cleared.
*/
@@ -69149,7 +64921,7 @@ static void clearAllSharedCacheTableLocks(Btree *p){
pBt->pWriter = 0;
pBt->btsFlags &= ~(BTS_EXCLUSIVE|BTS_PENDING);
}else if( pBt->nTransaction==2 ){
- /* This function is called when Btree p is concluding its
+ /* This function is called when Btree p is concluding its
** transaction. If there currently exists a writer, and p is not
** that writer, then the number of locks held by connections other
** than the writer must be about to drop to zero. In this case
@@ -69195,7 +64967,7 @@ static int cursorHoldsMutex(BtCursor *p){
}
/* Verify that the cursor and the BtShared agree about what is the current
-** database connetion. This is important in shared-cache mode. If the database
+** database connetion. This is important in shared-cache mode. If the database
** connection pointers get out-of-sync, it is possible for routines like
** btreeInitPage() to reference an stale connection pointer that references a
** a connection that has already closed. This routine is used inside assert()
@@ -69266,8 +65038,8 @@ static void invalidateIncrblobCursors(
#endif /* SQLITE_OMIT_INCRBLOB */
/*
-** Set bit pgno of the BtShared.pHasContent bitvec. This is called
-** when a page that previously contained data becomes a free-list leaf
+** Set bit pgno of the BtShared.pHasContent bitvec. This is called
+** when a page that previously contained data becomes a free-list leaf
** page.
**
** The BtShared.pHasContent bitvec exists to work around an obscure
@@ -69293,7 +65065,7 @@ static void invalidateIncrblobCursors(
** may be lost. In the event of a rollback, it may not be possible
** to restore the database to its original configuration.
**
-** The solution is the BtShared.pHasContent bitvec. Whenever a page is
+** The solution is the BtShared.pHasContent bitvec. Whenever a page is
** moved to become a free-list leaf page, the corresponding bit is
** set in the bitvec. Whenever a leaf page is extracted from the free-list,
** optimization 2 above is omitted if the corresponding bit is already
@@ -69324,7 +65096,7 @@ static int btreeSetHasContent(BtShared *pBt, Pgno pgno){
*/
static int btreeGetHasContent(BtShared *pBt, Pgno pgno){
Bitvec *p = pBt->pHasContent;
- return (p && (pgno>sqlite3BitvecSize(p) || sqlite3BitvecTest(p, pgno)));
+ return p && (pgno>sqlite3BitvecSize(p) || sqlite3BitvecTestNotNull(p, pgno));
}
/*
@@ -69354,13 +65126,13 @@ static void btreeReleaseAllCursorPages(BtCursor *pCur){
** The cursor passed as the only argument must point to a valid entry
** when this function is called (i.e. have eState==CURSOR_VALID). This
** function saves the current cursor key in variables pCur->nKey and
-** pCur->pKey. SQLITE_OK is returned if successful or an SQLite error
+** pCur->pKey. SQLITE_OK is returned if successful or an SQLite error
** code otherwise.
**
** If the cursor is open on an intkey table, then the integer key
** (the rowid) is stored in pCur->nKey and pCur->pKey is left set to
-** NULL. If the cursor is open on a non-intkey table, then pCur->pKey is
-** set to point to a malloced buffer pCur->nKey bytes in size containing
+** NULL. If the cursor is open on a non-intkey table, then pCur->pKey is
+** set to point to a malloced buffer pCur->nKey bytes in size containing
** the key.
*/
static int saveCursorKey(BtCursor *pCur){
@@ -69376,8 +65148,8 @@ static int saveCursorKey(BtCursor *pCur){
/* For an index btree, save the complete key content. It is possible
** that the current key is corrupt. In that case, it is possible that
** the sqlite3VdbeRecordUnpack() function may overread the buffer by
- ** up to the size of 1 varint plus 1 8-byte value when the cursor
- ** position is restored. Hence the 17 bytes of padding allocated
+ ** up to the size of 1 varint plus 1 8-byte value when the cursor
+ ** position is restored. Hence the 17 bytes of padding allocated
** below. */
void *pKey;
pCur->nKey = sqlite3BtreePayloadSize(pCur);
@@ -69399,11 +65171,11 @@ static int saveCursorKey(BtCursor *pCur){
}
/*
-** Save the current cursor position in the variables BtCursor.nKey
+** Save the current cursor position in the variables BtCursor.nKey
** and BtCursor.pKey. The cursor's state is set to CURSOR_REQUIRESEEK.
**
** The caller must ensure that the cursor is valid (has eState==CURSOR_VALID)
-** prior to calling this routine.
+** prior to calling this routine.
*/
static int saveCursorPosition(BtCursor *pCur){
int rc;
@@ -69412,6 +65184,9 @@ static int saveCursorPosition(BtCursor *pCur){
assert( 0==pCur->pKey );
assert( cursorHoldsMutex(pCur) );
+ if( pCur->curFlags & BTCF_Pinned ){
+ return SQLITE_CONSTRAINT_PINNED;
+ }
if( pCur->eState==CURSOR_SKIPNEXT ){
pCur->eState = CURSOR_VALID;
}else{
@@ -69439,7 +65214,7 @@ static int SQLITE_NOINLINE saveCursorsOnList(BtCursor*,Pgno,BtCursor*);
** routine is called just before cursor pExcept is used to modify the
** table, for example in BtreeDelete() or BtreeInsert().
**
-** If there are two or more cursors on the same btree, then all such
+** If there are two or more cursors on the same btree, then all such
** cursors should have their BTCF_Multiple flag set. The btreeCursor()
** routine enforces that rule. This routine only needs to be called in
** the uncommon case when pExpect has the BTCF_Multiple flag set.
@@ -69539,9 +65314,9 @@ moveto_done:
/*
** Restore the cursor to the position it was in (or as close to as possible)
-** when saveCursorPosition() was called. Note that this call deletes the
+** when saveCursorPosition() was called. Note that this call deletes the
** saved position info stored by saveCursorPosition(), so there can be
-** at most one effective restoreCursorPosition() call after each
+** at most one effective restoreCursorPosition() call after each
** saveCursorPosition().
*/
static int btreeRestoreCursorPosition(BtCursor *pCur){
@@ -69609,7 +65384,7 @@ SQLITE_PRIVATE BtCursor *sqlite3BtreeFakeValidCursor(void){
/*
** This routine restores a cursor back to its original position after it
** has been moved by some outside activity (such as a btree rebalance or
-** a row having been deleted out from under the cursor).
+** a row having been deleted out from under the cursor).
**
** On success, the *pDifferentRow parameter is false if the cursor is left
** pointing at exactly the same row. *pDifferntRow is the row the cursor
@@ -69674,7 +65449,7 @@ static Pgno ptrmapPageno(BtShared *pBt, Pgno pgno){
if( pgno<2 ) return 0;
nPagesPerMapPage = (pBt->usableSize/5)+1;
iPtrMap = (pgno-2)/nPagesPerMapPage;
- ret = (iPtrMap*nPagesPerMapPage) + 2;
+ ret = (iPtrMap*nPagesPerMapPage) + 2;
if( ret==PENDING_BYTE_PAGE(pBt) ){
ret++;
}
@@ -69701,7 +65476,7 @@ static void ptrmapPut(BtShared *pBt, Pgno key, u8 eType, Pgno parent, int *pRC){
if( *pRC ) return;
assert( sqlite3_mutex_held(pBt->mutex) );
- /* The master-journal page number must never be used as a pointer map page */
+ /* The super-journal page number must never be used as a pointer map page */
assert( 0==PTRMAP_ISPAGE(pBt, PENDING_BYTE_PAGE(pBt)) );
assert( pBt->autoVacuum );
@@ -70020,7 +65795,7 @@ static u16 cellSizePtr(MemPage *pPage, u8 *pCell){
}
pIter++;
if( pPage->intKey ){
- /* pIter now points at the 64-bit integer key value, a variable length
+ /* pIter now points at the 64-bit integer key value, a variable length
** integer. The following block moves pIter to point at the first byte
** past the end of the key value. */
pEnd = &pIter[9];
@@ -70145,7 +65920,7 @@ static int defragmentPage(MemPage *pPage, int nMaxFrag){
/* This block handles pages with two or fewer free blocks and nMaxFrag
** or fewer fragmented bytes. In this case it is faster to move the
** two (or one) blocks of cells using memmove() and add the required
- ** offsets to each pointer in the cell-pointer array than it is to
+ ** offsets to each pointer in the cell-pointer array than it is to
** reconstruct the entire page. */
if( (int)data[hdr+7]<=nMaxFrag ){
int iFree = get2byte(&data[hdr+1]);
@@ -70168,7 +65943,7 @@ static int defragmentPage(MemPage *pPage, int nMaxFrag){
if( iFree2+sz2 > usableSize ) return SQLITE_CORRUPT_PAGE(pPage);
memmove(&data[iFree+sz+sz2], &data[iFree+sz], iFree2-(iFree+sz));
sz += sz2;
- }else if( iFree+sz>usableSize ){
+ }else if( NEVER(iFree+sz>usableSize) ){
return SQLITE_CORRUPT_PAGE(pPage);
}
@@ -70323,7 +66098,7 @@ static int allocateSpace(MemPage *pPage, int nByte, int *pIdx){
int top; /* First byte of cell content area */
int rc = SQLITE_OK; /* Integer return code */
int gap; /* First byte of gap between cell pointers and cell content */
-
+
assert( sqlite3PagerIswriteable(pPage->pDbPage) );
assert( pPage->pBt );
assert( sqlite3_mutex_held(pPage->pBt->mutex) );
@@ -70360,8 +66135,10 @@ static int allocateSpace(MemPage *pPage, int nByte, int *pIdx){
if( (data[hdr+2] || data[hdr+1]) && gap+2<=top ){
u8 *pSpace = pageFindSlot(pPage, nByte, &rc);
if( pSpace ){
+ int g2;
assert( pSpace+nByte<=data+pPage->pBt->usableSize );
- if( (*pIdx = (int)(pSpace-data))<=gap ){
+ *pIdx = g2 = (int)(pSpace-data);
+ if( NEVER(g2<=gap) ){
return SQLITE_CORRUPT_PAGE(pPage);
}else{
return SQLITE_OK;
@@ -70429,7 +66206,7 @@ static int freeSpace(MemPage *pPage, u16 iStart, u16 iSize){
assert( iSize>=4 ); /* Minimum cell size is 4 */
assert( iStart<=pPage->pBt->usableSize-4 );
- /* The list of freeblocks must be in ascending order. Find the
+ /* The list of freeblocks must be in ascending order. Find the
** spot on the list where iStart should be inserted.
*/
hdr = pPage->hdrOffset;
@@ -70439,16 +66216,16 @@ static int freeSpace(MemPage *pPage, u16 iStart, u16 iSize){
}else{
while( (iFreeBlk = get2byte(&data[iPtr]))pPage->pBt->usableSize-4 ){
+ if( iFreeBlk>pPage->pBt->usableSize-4 ){ /* TH3: corrupt081.100 */
return SQLITE_CORRUPT_PAGE(pPage);
}
assert( iFreeBlk>iPtr || iFreeBlk==0 );
-
+
/* At this point:
** iFreeBlk: First freeblock after iStart, or zero if none
** iPtr: The address of a pointer to iFreeBlk
@@ -70465,7 +66242,7 @@ static int freeSpace(MemPage *pPage, u16 iStart, u16 iSize){
iSize = iEnd - iStart;
iFreeBlk = get2byte(&data[iFreeBlk]);
}
-
+
/* If iPtr is another freeblock (that is, if iPtr is not the freelist
** pointer in the page header) then check to see if iStart should be
** coalesced onto the end of iPtr.
@@ -70487,7 +66264,8 @@ static int freeSpace(MemPage *pPage, u16 iStart, u16 iSize){
/* The new freeblock is at the beginning of the cell content area,
** so just extend the cell content area rather than create another
** freelist entry */
- if( iStart0 ){
u32 next, size;
- if( pciCellLast ){
@@ -70650,7 +66428,7 @@ static int btreeComputeFreeSpace(MemPage *pPage){
/*
** Do additional sanity check after btreeInitPage() if
-** PRAGMA cell_size_check=ON
+** PRAGMA cell_size_check=ON
*/
static SQLITE_NOINLINE int btreeCellSizeCheck(MemPage *pPage){
int iCellFirst; /* First allowable cell or freeblock offset */
@@ -70688,7 +66466,7 @@ static SQLITE_NOINLINE int btreeCellSizeCheck(MemPage *pPage){
** Initialize the auxiliary information for a disk block.
**
** Return SQLITE_OK on success. If we see that the page does
-** not contain a well-formed database page, then return
+** not contain a well-formed database page, then return
** SQLITE_CORRUPT. Note that a return of SQLITE_OK does not
** guarantee that the page is well-formed. It only shows that
** we failed to detect any corruption.
@@ -70793,7 +66571,7 @@ static MemPage *btreePageFromDbPage(DbPage *pDbPage, Pgno pgno, BtShared *pBt){
pPage->hdrOffset = pgno==1 ? 100 : 0;
}
assert( pPage->aData==sqlite3PagerGetData(pDbPage) );
- return pPage;
+ return pPage;
}
/*
@@ -70846,9 +66624,8 @@ static MemPage *btreePageLookup(BtShared *pBt, Pgno pgno){
static Pgno btreePagecount(BtShared *pBt){
return pBt->nPage;
}
-SQLITE_PRIVATE u32 sqlite3BtreeLastPage(Btree *p){
+SQLITE_PRIVATE Pgno sqlite3BtreeLastPage(Btree *p){
assert( sqlite3BtreeHoldsMutex(p) );
- assert( ((p->pBt->nPage)&0x80000000)==0 );
return btreePagecount(p->pBt);
}
@@ -71011,17 +66788,16 @@ static int btreeInvokeBusyHandler(void *pArg){
BtShared *pBt = (BtShared*)pArg;
assert( pBt->db );
assert( sqlite3_mutex_held(pBt->db->mutex) );
- return sqlite3InvokeBusyHandler(&pBt->db->busyHandler,
- sqlite3PagerFile(pBt->pPager));
+ return sqlite3InvokeBusyHandler(&pBt->db->busyHandler);
}
/*
** Open a database file.
-**
+**
** zFilename is the name of the database file. If zFilename is NULL
** then an ephemeral database is created. The ephemeral database might
** be exclusively in memory, or it might use a disk-based memory cache.
-** Either way, the ephemeral database will be automatically deleted
+** Either way, the ephemeral database will be automatically deleted
** when sqlite3BtreeClose() is called.
**
** If zFilename is ":memory:" then an in-memory database is created
@@ -71054,7 +66830,7 @@ SQLITE_PRIVATE int sqlite3BtreeOpen(
/* True if opening an ephemeral, temporary database */
const int isTempDb = zFilename==0 || zFilename[0]==0;
- /* Set the variable isMemdb to true for an in-memory database, or
+ /* Set the variable isMemdb to true for an in-memory database, or
** false for a file-based database.
*/
#ifdef SQLITE_OMIT_MEMORYDB
@@ -71116,15 +66892,19 @@ SQLITE_PRIVATE int sqlite3BtreeOpen(
rc = sqlite3OsFullPathname(pVfs, zFilename,
nFullPathname, zFullPathname);
if( rc ){
- sqlite3_free(zFullPathname);
- sqlite3_free(p);
- return rc;
+ if( rc==SQLITE_OK_SYMLINK ){
+ rc = SQLITE_OK;
+ }else{
+ sqlite3_free(zFullPathname);
+ sqlite3_free(p);
+ return rc;
+ }
}
}
#if SQLITE_THREADSAFE
mutexOpen = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_OPEN);
sqlite3_mutex_enter(mutexOpen);
- mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+ mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN);
sqlite3_mutex_enter(mutexShared);
#endif
for(pBt=GLOBAL(BtShared*,sqlite3SharedCacheList); pBt; pBt=pBt->pNext){
@@ -71173,7 +66953,7 @@ SQLITE_PRIVATE int sqlite3BtreeOpen(
assert( sizeof(u32)==4 );
assert( sizeof(u16)==2 );
assert( sizeof(Pgno)==4 );
-
+
pBt = sqlite3MallocZero( sizeof(*pBt) );
if( pBt==0 ){
rc = SQLITE_NOMEM_BKPT;
@@ -71192,7 +66972,7 @@ SQLITE_PRIVATE int sqlite3BtreeOpen(
pBt->db = db;
sqlite3PagerSetBusyHandler(pBt->pPager, btreeInvokeBusyHandler, pBt);
p->pBt = pBt;
-
+
pBt->pCursor = 0;
pBt->pPage1 = 0;
if( sqlite3PagerIsreadonly(pBt->pPager) ) pBt->btsFlags |= BTS_READ_ONLY;
@@ -71236,14 +67016,14 @@ SQLITE_PRIVATE int sqlite3BtreeOpen(
if( rc ) goto btree_open_out;
pBt->usableSize = pBt->pageSize - nReserve;
assert( (pBt->pageSize & 7)==0 ); /* 8-byte alignment of pageSize */
-
+
#if !defined(SQLITE_OMIT_SHARED_CACHE) && !defined(SQLITE_OMIT_DISKIO)
/* Add the new BtShared object to the linked list sharable BtShareds.
*/
pBt->nRef = 1;
if( p->sharable ){
MUTEX_LOGIC( sqlite3_mutex *mutexShared; )
- MUTEX_LOGIC( mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);)
+ MUTEX_LOGIC( mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN);)
if( SQLITE_THREADSAFE && sqlite3GlobalConfig.bCoreMutex ){
pBt->mutex = sqlite3MutexAlloc(SQLITE_MUTEX_FAST);
if( pBt->mutex==0 ){
@@ -71332,13 +67112,13 @@ btree_open_out:
*/
static int removeFromSharingList(BtShared *pBt){
#ifndef SQLITE_OMIT_SHARED_CACHE
- MUTEX_LOGIC( sqlite3_mutex *pMaster; )
+ MUTEX_LOGIC( sqlite3_mutex *pMainMtx; )
BtShared *pList;
int removed = 0;
assert( sqlite3_mutex_notheld(pBt->mutex) );
- MUTEX_LOGIC( pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
- sqlite3_mutex_enter(pMaster);
+ MUTEX_LOGIC( pMainMtx = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); )
+ sqlite3_mutex_enter(pMainMtx);
pBt->nRef--;
if( pBt->nRef<=0 ){
if( GLOBAL(BtShared*,sqlite3SharedCacheList)==pBt ){
@@ -71357,7 +67137,7 @@ static int removeFromSharingList(BtShared *pBt){
}
removed = 1;
}
- sqlite3_mutex_leave(pMaster);
+ sqlite3_mutex_leave(pMainMtx);
return removed;
#else
return 1;
@@ -71365,7 +67145,7 @@ static int removeFromSharingList(BtShared *pBt){
}
/*
-** Make sure pBt->pTmpSpace points to an allocation of
+** Make sure pBt->pTmpSpace points to an allocation of
** MX_CELL_SIZE(pBt) bytes with a 4-byte prefix for a left-child
** pointer.
*/
@@ -71380,7 +67160,7 @@ static void allocateTempSpace(BtShared *pBt){
** can mean that fillInCell() only initializes the first 2 or 3
** bytes of pTmpSpace, but that the first 4 bytes are copied from
** it into a database page. This is not actually a problem, but it
- ** does cause a valgrind error when the 1 or 2 bytes of unitialized
+ ** does cause a valgrind error when the 1 or 2 bytes of unitialized
** data is passed to system call write(). So to avoid this error,
** zero the first 4 bytes of temp space here.
**
@@ -71433,7 +67213,7 @@ SQLITE_PRIVATE int sqlite3BtreeClose(Btree *p){
sqlite3BtreeLeave(p);
/* If there are still other outstanding references to the shared-btree
- ** structure, return now. The remainder of this procedure cleans
+ ** structure, return now. The remainder of this procedure cleans
** up the shared-btree.
*/
assert( p->wantToLock==0 && p->locked==0 );
@@ -71539,7 +67319,7 @@ SQLITE_PRIVATE int sqlite3BtreeSetPagerFlags(
/*
** Change the default pages size and the number of reserved bytes per page.
-** Or, if the page size has already been fixed, return SQLITE_READONLY
+** Or, if the page size has already been fixed, return SQLITE_READONLY
** without changing anything.
**
** The page size must be a power of 2 between 512 and 65536. If the page
@@ -71559,19 +67339,17 @@ SQLITE_PRIVATE int sqlite3BtreeSetPagerFlags(
*/
SQLITE_PRIVATE int sqlite3BtreeSetPageSize(Btree *p, int pageSize, int nReserve, int iFix){
int rc = SQLITE_OK;
+ int x;
BtShared *pBt = p->pBt;
- assert( nReserve>=-1 && nReserve<=255 );
+ assert( nReserve>=0 && nReserve<=255 );
sqlite3BtreeEnter(p);
-#if SQLITE_HAS_CODEC
- if( nReserve>pBt->optimalReserve ) pBt->optimalReserve = (u8)nReserve;
-#endif
+ pBt->nReserveWanted = nReserve;
+ x = pBt->pageSize - pBt->usableSize;
+ if( nReservebtsFlags & BTS_PAGESIZE_FIXED ){
sqlite3BtreeLeave(p);
return SQLITE_READONLY;
}
- if( nReserve<0 ){
- nReserve = pBt->pageSize - pBt->usableSize;
- }
assert( nReserve>=0 && nReserve<=255 );
if( pageSize>=512 && pageSize<=SQLITE_MAX_PAGE_SIZE &&
((pageSize-1)&pageSize)==0 ){
@@ -71600,7 +67378,7 @@ SQLITE_PRIVATE int sqlite3BtreeGetPageSize(Btree *p){
** held.
**
** This is useful in one special case in the backup API code where it is
-** known that the shared b-tree mutex is held, but the mutex on the
+** known that the shared b-tree mutex is held, but the mutex on the
** database handle that owns *p is not. In this case if sqlite3BtreeEnter()
** were to be called, it might collide with some other operation on the
** database handle that owns *p, causing undefined behavior.
@@ -71617,19 +67395,17 @@ SQLITE_PRIVATE int sqlite3BtreeGetReserveNoMutex(Btree *p){
** are intentually left unused. This is the "reserved" space that is
** sometimes used by extensions.
**
-** If SQLITE_HAS_MUTEX is defined then the number returned is the
-** greater of the current reserved space and the maximum requested
-** reserve space.
+** The value returned is the larger of the current reserve size and
+** the latest reserve size requested by SQLITE_FILECTRL_RESERVE_BYTES.
+** The amount of reserve can only grow - never shrink.
*/
-SQLITE_PRIVATE int sqlite3BtreeGetOptimalReserve(Btree *p){
- int n;
+SQLITE_PRIVATE int sqlite3BtreeGetRequestedReserve(Btree *p){
+ int n1, n2;
sqlite3BtreeEnter(p);
- n = sqlite3BtreeGetReserveNoMutex(p);
-#ifdef SQLITE_HAS_CODEC
- if( npBt->optimalReserve ) n = p->pBt->optimalReserve;
-#endif
+ n1 = (int)p->pBt->nReserveWanted;
+ n2 = sqlite3BtreeGetReserveNoMutex(p);
sqlite3BtreeLeave(p);
- return n;
+ return n1>n2 ? n1 : n2;
}
@@ -71638,8 +67414,8 @@ SQLITE_PRIVATE int sqlite3BtreeGetOptimalReserve(Btree *p){
** No changes are made if mxPage is 0 or negative.
** Regardless of the value of mxPage, return the maximum page count.
*/
-SQLITE_PRIVATE int sqlite3BtreeMaxPageCount(Btree *p, int mxPage){
- int n;
+SQLITE_PRIVATE Pgno sqlite3BtreeMaxPageCount(Btree *p, Pgno mxPage){
+ Pgno n;
sqlite3BtreeEnter(p);
n = sqlite3PagerMaxPageCount(p->pBt->pPager, mxPage);
sqlite3BtreeLeave(p);
@@ -71682,7 +67458,7 @@ SQLITE_PRIVATE int sqlite3BtreeSecureDelete(Btree *p, int newFlag){
/*
** Change the 'auto-vacuum' property of the database. If the 'autoVacuum'
** parameter is non-zero, then auto-vacuum mode is enabled. If zero, it
-** is disabled. The default value for the auto-vacuum property is
+** is disabled. The default value for the auto-vacuum property is
** determined by the SQLITE_DEFAULT_AUTOVACUUM macro.
*/
SQLITE_PRIVATE int sqlite3BtreeSetAutoVacuum(Btree *p, int autoVacuum){
@@ -71706,7 +67482,7 @@ SQLITE_PRIVATE int sqlite3BtreeSetAutoVacuum(Btree *p, int autoVacuum){
}
/*
-** Return the value of the 'auto-vacuum' property. If auto-vacuum is
+** Return the value of the 'auto-vacuum' property. If auto-vacuum is
** enabled 1 is returned. Otherwise 0.
*/
SQLITE_PRIVATE int sqlite3BtreeGetAutoVacuum(Btree *p){
@@ -71738,9 +67514,9 @@ static void setDefaultSyncFlag(BtShared *pBt, u8 safety_level){
Db *pDb;
if( (db=pBt->db)!=0 && (pDb=db->aDb)!=0 ){
while( pDb->pBt==0 || pDb->pBt->pBt!=pBt ){ pDb++; }
- if( pDb->bSyncSet==0
- && pDb->safety_level!=safety_level
- && pDb!=&db->aDb[1]
+ if( pDb->bSyncSet==0
+ && pDb->safety_level!=safety_level
+ && pDb!=&db->aDb[1]
){
pDb->safety_level = safety_level;
sqlite3PagerSetFlags(pBt->pPager,
@@ -71763,7 +67539,7 @@ static int newDatabase(BtShared*);
** SQLITE_OK is returned on success. If the file is not a
** well-formed database file, then SQLITE_CORRUPT is returned.
** SQLITE_BUSY is returned if the database is locked. SQLITE_NOMEM
-** is returned if we run out of memory.
+** is returned if we run out of memory.
*/
static int lockBtree(BtShared *pBt){
int rc; /* Result code from subfunctions */
@@ -71780,7 +67556,7 @@ static int lockBtree(BtShared *pBt){
if( rc!=SQLITE_OK ) return rc;
/* Do some checking to help insure the file we opened really is
- ** a valid database file.
+ ** a valid database file.
*/
nPage = nPageHeader = get4byte(28+(u8*)pPage1->aData);
sqlite3PagerPagecount(pBt->pPager, (int*)&nPageFile);
@@ -71818,7 +67594,7 @@ static int lockBtree(BtShared *pBt){
}
/* If the write version is set to 2, this database should be accessed
- ** in WAL mode. If the log is not already open, open it now. Then
+ ** in WAL mode. If the log is not already open, open it now. Then
** return SQLITE_OK and return without populating BtShared.pPage1.
** The caller detects this and calls this function again. This is
** required as the version of page 1 currently in the page1 buffer
@@ -71859,8 +67635,8 @@ static int lockBtree(BtShared *pBt){
/* EVIDENCE-OF: R-25008-21688 The size of a page is a power of two
** between 512 and 65536 inclusive. */
if( ((pageSize-1)&pageSize)!=0
- || pageSize>SQLITE_MAX_PAGE_SIZE
- || pageSize<=256
+ || pageSize>SQLITE_MAX_PAGE_SIZE
+ || pageSize<=256
){
goto page1_init_failed;
}
@@ -71868,7 +67644,7 @@ static int lockBtree(BtShared *pBt){
assert( (pageSize & 7)==0 );
/* EVIDENCE-OF: R-59310-51205 The "reserved space" size in the 1-byte
** integer at offset 20 is the number of bytes of space at the end of
- ** each page to reserve for extensions.
+ ** each page to reserve for extensions.
**
** EVIDENCE-OF: R-37497-42412 The size of the reserved region is
** determined by the one-byte unsigned integer found at an offset of 20
@@ -71958,7 +67734,7 @@ static int countValidCursors(BtShared *pBt, int wrOnly){
int r = 0;
for(pCur=pBt->pCursor; pCur; pCur=pCur->pNext){
if( (wrOnly==0 || (pCur->curFlags & BTCF_WriteFlag)!=0)
- && pCur->eState!=CURSOR_FAULT ) r++;
+ && pCur->eState!=CURSOR_FAULT ) r++;
}
return r;
}
@@ -71967,7 +67743,7 @@ static int countValidCursors(BtShared *pBt, int wrOnly){
/*
** If there are no outstanding cursors and we are not in the middle
** of a transaction but there is a read lock on the database, then
-** this routine unrefs the first page of the database file which
+** this routine unrefs the first page of the database file which
** has the effect of releasing the read lock.
**
** If there is a transaction in progress, this routine is a no-op.
@@ -72051,8 +67827,8 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p){
** upgraded to exclusive by calling this routine a second time - the
** exclusivity flag only works for a new transaction.
**
-** A write-transaction must be started before attempting any
-** changes to the database. None of the following routines
+** A write-transaction must be started before attempting any
+** changes to the database. None of the following routines
** will work unless a transaction is started first:
**
** sqlite3BtreeCreateTable()
@@ -72066,7 +67842,7 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p){
** If an initial attempt to acquire the lock fails because of lock contention
** and the database was previously unlocked, then invoke the busy handler
** if there is one. But if there was previously a read-lock, do not
-** invoke the busy handler - just return SQLITE_BUSY. SQLITE_BUSY is
+** invoke the busy handler - just return SQLITE_BUSY. SQLITE_BUSY is
** returned when there is already a read-lock in order to avoid a deadlock.
**
** Suppose there are two processes A and B. A has a read lock and B has
@@ -72079,6 +67855,7 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p){
*/
SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVersion){
BtShared *pBt = p->pBt;
+ Pager *pPager = pBt->pPager;
int rc = SQLITE_OK;
sqlite3BtreeEnter(p);
@@ -72093,8 +67870,8 @@ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVers
}
assert( pBt->inTransaction==TRANS_WRITE || IfNotOmitAV(pBt->bDoTruncate)==0 );
- if( (p->db->flags & SQLITE_ResetDatabase)
- && sqlite3PagerIsreadonly(pBt->pPager)==0
+ if( (p->db->flags & SQLITE_ResetDatabase)
+ && sqlite3PagerIsreadonly(pPager)==0
){
pBt->btsFlags &= ~BTS_READ_ONLY;
}
@@ -72108,7 +67885,7 @@ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVers
#ifndef SQLITE_OMIT_SHARED_CACHE
{
sqlite3 *pBlock = 0;
- /* If another database handle has already opened a write transaction
+ /* If another database handle has already opened a write transaction
** on this shared-btree structure and a second write transaction is
** requested, return SQLITE_LOCKED.
*/
@@ -72133,19 +67910,31 @@ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVers
}
#endif
- /* Any read-only or read-write transaction implies a read-lock on
- ** page 1. So if some other shared-cache client already has a write-lock
+ /* Any read-only or read-write transaction implies a read-lock on
+ ** page 1. So if some other shared-cache client already has a write-lock
** on page 1, the transaction cannot be opened. */
- rc = querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK);
+ rc = querySharedCacheTableLock(p, SCHEMA_ROOT, READ_LOCK);
if( SQLITE_OK!=rc ) goto trans_begun;
pBt->btsFlags &= ~BTS_INITIALLY_EMPTY;
if( pBt->nPage==0 ) pBt->btsFlags |= BTS_INITIALLY_EMPTY;
do {
+ sqlite3PagerWalDb(pPager, p->db);
+
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+ /* If transitioning from no transaction directly to a write transaction,
+ ** block for the WRITER lock first if possible. */
+ if( pBt->pPage1==0 && wrflag ){
+ assert( pBt->inTransaction==TRANS_NONE );
+ rc = sqlite3PagerWalWriteLock(pPager, 1);
+ if( rc!=SQLITE_BUSY && rc!=SQLITE_OK ) break;
+ }
+#endif
+
/* Call lockBtree() until either pBt->pPage1 is populated or
** lockBtree() returns something other than SQLITE_OK. lockBtree()
** may return SQLITE_OK but leave pBt->pPage1 set to 0 if after
- ** reading page 1 it discovers that the page-size of the database
+ ** reading page 1 it discovers that the page-size of the database
** file is not pBt->pageSize. In this case lockBtree() will update
** pBt->pageSize to the page-size of the file on disk.
*/
@@ -72155,7 +67944,7 @@ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVers
if( (pBt->btsFlags & BTS_READ_ONLY)!=0 ){
rc = SQLITE_READONLY;
}else{
- rc = sqlite3PagerBegin(pBt->pPager,wrflag>1,sqlite3TempInMemory(p->db));
+ rc = sqlite3PagerBegin(pPager, wrflag>1, sqlite3TempInMemory(p->db));
if( rc==SQLITE_OK ){
rc = newDatabase(pBt);
}else if( rc==SQLITE_BUSY_SNAPSHOT && pBt->inTransaction==TRANS_NONE ){
@@ -72166,13 +67955,17 @@ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVers
}
}
}
-
+
if( rc!=SQLITE_OK ){
+ (void)sqlite3PagerWalWriteLock(pPager, 0);
unlockBtreeIfUnused(pBt);
}
}while( (rc&0xFF)==SQLITE_BUSY && pBt->inTransaction==TRANS_NONE &&
btreeInvokeBusyHandler(pBt) );
- sqlite3PagerResetLockTimeout(pBt->pPager);
+ sqlite3PagerWalDb(pPager, 0);
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+ if( rc==SQLITE_BUSY_TIMEOUT ) rc = SQLITE_BUSY;
+#endif
if( rc==SQLITE_OK ){
if( p->inTrans==TRANS_NONE ){
@@ -72201,7 +67994,7 @@ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVers
/* If the db-size header field is incorrect (as it may be if an old
** client has been writing the database file), update it now. Doing
- ** this sooner rather than later means the database size can safely
+ ** this sooner rather than later means the database size can safely
** re-read the database size from page 1 if a savepoint or transaction
** rollback occurs within the transaction.
*/
@@ -72224,7 +68017,7 @@ trans_begun:
** open savepoints. If the second parameter is greater than 0 and
** the sub-journal is not already open, then it will be opened here.
*/
- rc = sqlite3PagerOpenSavepoint(pBt->pPager, p->db->nSavepoint);
+ rc = sqlite3PagerOpenSavepoint(pPager, p->db->nSavepoint);
}
}
@@ -72276,7 +68069,7 @@ static int setChildPtrmaps(MemPage *pPage){
** that it points to iTo. Parameter eType describes the type of pointer to
** be modified, as follows:
**
-** PTRMAP_BTREE: pPage is a btree-page. The pointer points at a child
+** PTRMAP_BTREE: pPage is a btree-page. The pointer points at a child
** page of pPage.
**
** PTRMAP_OVERFLOW1: pPage is a btree-page. The pointer points at an overflow
@@ -72324,9 +68117,9 @@ static int modifyPagePointer(MemPage *pPage, Pgno iFrom, Pgno iTo, u8 eType){
}
}
}
-
+
if( i==nCell ){
- if( eType!=PTRMAP_BTREE ||
+ if( eType!=PTRMAP_BTREE ||
get4byte(&pPage->aData[pPage->hdrOffset+8])!=iFrom ){
return SQLITE_CORRUPT_PAGE(pPage);
}
@@ -72338,11 +68131,11 @@ static int modifyPagePointer(MemPage *pPage, Pgno iFrom, Pgno iTo, u8 eType){
/*
-** Move the open database page pDbPage to location iFreePage in the
+** Move the open database page pDbPage to location iFreePage in the
** database. The pDbPage reference remains valid.
**
** The isCommit flag indicates that there is no need to remember that
-** the journal needs to be sync()ed before database page pDbPage->pgno
+** the journal needs to be sync()ed before database page pDbPage->pgno
** can be written to. The caller has already promised not to write to that
** page.
*/
@@ -72359,14 +68152,14 @@ static int relocatePage(
Pager *pPager = pBt->pPager;
int rc;
- assert( eType==PTRMAP_OVERFLOW2 || eType==PTRMAP_OVERFLOW1 ||
+ assert( eType==PTRMAP_OVERFLOW2 || eType==PTRMAP_OVERFLOW1 ||
eType==PTRMAP_BTREE || eType==PTRMAP_ROOTPAGE );
assert( sqlite3_mutex_held(pBt->mutex) );
assert( pDbPage->pBt==pBt );
if( iDbPage<3 ) return SQLITE_CORRUPT_BKPT;
/* Move page iDbPage from its current location to page number iFreePage */
- TRACE(("AUTOVACUUM: Moving %d to free page %d (ptr page %d type %d)\n",
+ TRACE(("AUTOVACUUM: Moving %d to free page %d (ptr page %d type %d)\n",
iDbPage, iFreePage, iPtrPage, eType));
rc = sqlite3PagerMovepage(pPager, pDbPage->pDbPage, iFreePage, isCommit);
if( rc!=SQLITE_OK ){
@@ -72425,19 +68218,19 @@ static int allocateBtreePage(BtShared *, MemPage **, Pgno *, Pgno, u8);
/*
** Perform a single step of an incremental-vacuum. If successful, return
-** SQLITE_OK. If there is no work to do (and therefore no point in
-** calling this function again), return SQLITE_DONE. Or, if an error
+** SQLITE_OK. If there is no work to do (and therefore no point in
+** calling this function again), return SQLITE_DONE. Or, if an error
** occurs, return some other error code.
**
-** More specifically, this function attempts to re-organize the database so
+** More specifically, this function attempts to re-organize the database so
** that the last page of the file currently in use is no longer in use.
**
** Parameter nFin is the number of pages that this database would contain
** were this function called until it returns SQLITE_DONE.
**
-** If the bCommit parameter is non-zero, this function assumes that the
-** caller will keep calling incrVacuumStep() until it returns SQLITE_DONE
-** or an error. bCommit is passed true for an auto-vacuum-on-commit
+** If the bCommit parameter is non-zero, this function assumes that the
+** caller will keep calling incrVacuumStep() until it returns SQLITE_DONE
+** or an error. bCommit is passed true for an auto-vacuum-on-commit
** operation, or false for an incremental vacuum.
*/
static int incrVacuumStep(BtShared *pBt, Pgno nFin, Pgno iLastPg, int bCommit){
@@ -72468,7 +68261,7 @@ static int incrVacuumStep(BtShared *pBt, Pgno nFin, Pgno iLastPg, int bCommit){
if( bCommit==0 ){
/* Remove the page from the files free-list. This is not required
** if bCommit is non-zero. In that case, the free-list will be
- ** truncated to zero after this function returns, so it doesn't
+ ** truncated to zero after this function returns, so it doesn't
** matter if it still contains some garbage entries.
*/
Pgno iFreePg;
@@ -72512,7 +68305,7 @@ static int incrVacuumStep(BtShared *pBt, Pgno nFin, Pgno iLastPg, int bCommit){
releasePage(pFreePg);
}while( bCommit && iFreePg>nFin );
assert( iFreePgpPage1->aData[36]);
Pgno nFin = finalDbSize(pBt, nOrig, nFree);
- if( nOrig=nOrig ){
rc = SQLITE_CORRUPT_BKPT;
}else if( nFree>0 ){
rc = saveAllCursors(pBt, 0, 0);
@@ -72600,7 +68393,7 @@ SQLITE_PRIVATE int sqlite3BtreeIncrVacuum(Btree *p){
** is committed for an auto-vacuum database.
**
** If SQLITE_OK is returned, then *pnTrunc is set to the number of pages
-** the database file should be truncated to during the commit process.
+** the database file should be truncated to during the commit process.
** i.e. the database has been reorganized so that only the first *pnTrunc
** pages are in use.
*/
@@ -72672,18 +68465,18 @@ static int autoVacuumCommit(BtShared *pBt){
**
** This call is a no-op if no write-transaction is currently active on pBt.
**
-** Otherwise, sync the database file for the btree pBt. zMaster points to
-** the name of a master journal file that should be written into the
-** individual journal file, or is NULL, indicating no master journal file
+** Otherwise, sync the database file for the btree pBt. zSuperJrnl points to
+** the name of a super-journal file that should be written into the
+** individual journal file, or is NULL, indicating no super-journal file
** (single database transaction).
**
-** When this is called, the master journal should already have been
+** When this is called, the super-journal should already have been
** created, populated with this journal pointer and synced to disk.
**
** Once this is routine has returned, the only thing required to commit
** the write-transaction for this database file is to delete the journal.
*/
-SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree *p, const char *zMaster){
+SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree *p, const char *zSuperJrnl){
int rc = SQLITE_OK;
if( p->inTrans==TRANS_WRITE ){
BtShared *pBt = p->pBt;
@@ -72700,7 +68493,7 @@ SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree *p, const char *zMaster){
sqlite3PagerTruncateImage(pBt->pPager, pBt->nPage);
}
#endif
- rc = sqlite3PagerCommitPhaseOne(pBt->pPager, zMaster, 0);
+ rc = sqlite3PagerCommitPhaseOne(pBt->pPager, zSuperJrnl, 0);
sqlite3BtreeLeave(p);
}
return rc;
@@ -72725,8 +68518,8 @@ static void btreeEndTransaction(Btree *p){
downgradeAllSharedCacheTableLocks(p);
p->inTrans = TRANS_READ;
}else{
- /* If the handle had any kind of transaction open, decrement the
- ** transaction count of the shared btree. If the transaction count
+ /* If the handle had any kind of transaction open, decrement the
+ ** transaction count of the shared btree. If the transaction count
** reaches 0, set the shared state to TRANS_NONE. The unlockBtreeIfUnused()
** call below will unlock the pager. */
if( p->inTrans!=TRANS_NONE ){
@@ -72737,7 +68530,7 @@ static void btreeEndTransaction(Btree *p){
}
}
- /* Set the current transaction state to TRANS_NONE and unlock the
+ /* Set the current transaction state to TRANS_NONE and unlock the
** pager if this call closed the only read or write transaction. */
p->inTrans = TRANS_NONE;
unlockBtreeIfUnused(pBt);
@@ -72758,12 +68551,12 @@ static void btreeEndTransaction(Btree *p){
** the rollback journal (which causes the transaction to commit) and
** drop locks.
**
-** Normally, if an error occurs while the pager layer is attempting to
+** Normally, if an error occurs while the pager layer is attempting to
** finalize the underlying journal file, this function returns an error and
** the upper layer will attempt a rollback. However, if the second argument
-** is non-zero then this b-tree transaction is part of a multi-file
-** transaction. In this case, the transaction has already been committed
-** (by deleting a master journal file) and the caller will ignore this
+** is non-zero then this b-tree transaction is part of a multi-file
+** transaction. In this case, the transaction has already been committed
+** (by deleting a super-journal file) and the caller will ignore this
** functions return code. So, even if an error occurs in the pager layer,
** reset the b-tree objects internal state to indicate that the write
** transaction has been closed. This is quite safe, as the pager will have
@@ -72778,7 +68571,7 @@ SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree *p, int bCleanup){
sqlite3BtreeEnter(p);
btreeIntegrity(p);
- /* If the handle has a write-transaction open, commit the shared-btrees
+ /* If the handle has a write-transaction open, commit the shared-btrees
** transaction and set the shared state to TRANS_READ.
*/
if( p->inTrans==TRANS_WRITE ){
@@ -72827,15 +68620,15 @@ SQLITE_PRIVATE int sqlite3BtreeCommit(Btree *p){
**
** This routine gets called when a rollback occurs. If the writeOnly
** flag is true, then only write-cursors need be tripped - read-only
-** cursors save their current positions so that they may continue
-** following the rollback. Or, if writeOnly is false, all cursors are
+** cursors save their current positions so that they may continue
+** following the rollback. Or, if writeOnly is false, all cursors are
** tripped. In general, writeOnly is false if the transaction being
** rolled back modified the database schema. In this case b-tree root
** pages may be moved or deleted from the database altogether, making
** it unsafe for read cursors to continue.
**
-** If the writeOnly flag is true and an error is encountered while
-** saving the current position of a read-only cursor, all cursors,
+** If the writeOnly flag is true and an error is encountered while
+** saving the current position of a read-only cursor, all cursors,
** including all read-cursors are tripped.
**
** SQLITE_OK is returned if successful, or if an error occurs while
@@ -72941,8 +68734,8 @@ SQLITE_PRIVATE int sqlite3BtreeRollback(Btree *p, int tripCode, int writeOnly){
/*
** Start a statement subtransaction. The subtransaction can be rolled
-** back independently of the main transaction. You must start a transaction
-** before starting a subtransaction. The subtransaction is ended automatically
+** back independently of the main transaction. You must start a transaction
+** before starting a subtransaction. The subtransaction is ended automatically
** if the main transaction commits or rolls back.
**
** Statement subtransactions are used around individual SQL statements
@@ -72979,11 +68772,11 @@ SQLITE_PRIVATE int sqlite3BtreeBeginStmt(Btree *p, int iStatement){
/*
** The second argument to this function, op, is always SAVEPOINT_ROLLBACK
** or SAVEPOINT_RELEASE. This function either releases or rolls back the
-** savepoint identified by parameter iSavepoint, depending on the value
+** savepoint identified by parameter iSavepoint, depending on the value
** of op.
**
** Normally, iSavepoint is greater than or equal to zero. However, if op is
-** SAVEPOINT_ROLLBACK, then iSavepoint may also be -1. In this case the
+** SAVEPOINT_ROLLBACK, then iSavepoint may also be -1. In this case the
** contents of the entire transaction are rolled back. This is different
** from a normal transaction rollback, as no locks are released and the
** transaction remains open.
@@ -73008,7 +68801,7 @@ SQLITE_PRIVATE int sqlite3BtreeSavepoint(Btree *p, int op, int iSavepoint){
rc = newDatabase(pBt);
btreeSetNPage(pBt, pBt->pPage1);
- /* pBt->nPage might be zero if the database was corrupt when
+ /* pBt->nPage might be zero if the database was corrupt when
** the transaction was started. Otherwise, it must be at least 1. */
assert( CORRUPT_DB || pBt->nPage>0 );
}
@@ -73046,10 +68839,10 @@ SQLITE_PRIVATE int sqlite3BtreeSavepoint(Btree *p, int op, int iSavepoint){
** is set. If FORDELETE is set, that is a hint to the implementation that
** this cursor will only be used to seek to and delete entries of an index
** as part of a larger DELETE statement. The FORDELETE hint is not used by
-** this implementation. But in a hypothetical alternative storage engine
+** this implementation. But in a hypothetical alternative storage engine
** in which index entries are automatically deleted when corresponding table
** rows are deleted, the FORDELETE flag is a hint that all SEEK and DELETE
-** operations on this cursor can be no-ops and all READ operations can
+** operations on this cursor can be no-ops and all READ operations can
** return a null row (2-bytes: 0x01 0x00).
**
** No checking is done to make sure that page iTable really is the
@@ -73061,7 +68854,7 @@ SQLITE_PRIVATE int sqlite3BtreeSavepoint(Btree *p, int op, int iSavepoint){
*/
static int btreeCursor(
Btree *p, /* The btree */
- int iTable, /* Root page of table to open */
+ Pgno iTable, /* Root page of table to open */
int wrFlag, /* 1 to write. 0 read-only */
struct KeyInfo *pKeyInfo, /* First arg to comparison function */
BtCursor *pCur /* Space for new cursor */
@@ -73070,14 +68863,14 @@ static int btreeCursor(
BtCursor *pX; /* Looping over other all cursors */
assert( sqlite3BtreeHoldsMutex(p) );
- assert( wrFlag==0
- || wrFlag==BTREE_WRCSR
- || wrFlag==(BTREE_WRCSR|BTREE_FORDELETE)
+ assert( wrFlag==0
+ || wrFlag==BTREE_WRCSR
+ || wrFlag==(BTREE_WRCSR|BTREE_FORDELETE)
);
- /* The following assert statements verify that if this is a sharable
- ** b-tree database, the connection is holding the required table locks,
- ** and that no other connection has any open cursor that conflicts with
+ /* The following assert statements verify that if this is a sharable
+ ** b-tree database, the connection is holding the required table locks,
+ ** and that no other connection has any open cursor that conflicts with
** this lock. The iTable<1 term disables the check for corrupt schemas. */
assert( hasSharedCacheTableLock(p, iTable, pKeyInfo!=0, (wrFlag?2:1))
|| iTable<1 );
@@ -73104,7 +68897,7 @@ static int btreeCursor(
/* Now that no other errors can occur, finish filling in the BtCursor
** variables and link the cursor into the BtShared list. */
- pCur->pgnoRoot = (Pgno)iTable;
+ pCur->pgnoRoot = iTable;
pCur->iPage = -1;
pCur->pKeyInfo = pKeyInfo;
pCur->pBtree = p;
@@ -73114,7 +68907,7 @@ static int btreeCursor(
/* If there are two or more cursors on the same btree, then all such
** cursors *must* have the BTCF_Multiple flag set. */
for(pX=pBt->pCursor; pX; pX=pX->pNext){
- if( pX->pgnoRoot==(Pgno)iTable ){
+ if( pX->pgnoRoot==iTable ){
pX->curFlags |= BTCF_Multiple;
pCur->curFlags |= BTCF_Multiple;
}
@@ -73126,7 +68919,7 @@ static int btreeCursor(
}
static int btreeCursorWithLock(
Btree *p, /* The btree */
- int iTable, /* Root page of table to open */
+ Pgno iTable, /* Root page of table to open */
int wrFlag, /* 1 to write. 0 read-only */
struct KeyInfo *pKeyInfo, /* First arg to comparison function */
BtCursor *pCur /* Space for new cursor */
@@ -73139,7 +68932,7 @@ static int btreeCursorWithLock(
}
SQLITE_PRIVATE int sqlite3BtreeCursor(
Btree *p, /* The btree */
- int iTable, /* Root page of table to open */
+ Pgno iTable, /* Root page of table to open */
int wrFlag, /* 1 to write. 0 read-only */
struct KeyInfo *pKeyInfo, /* First arg to xCompare() */
BtCursor *pCur /* Write new cursor here */
@@ -73271,6 +69064,18 @@ SQLITE_PRIVATE i64 sqlite3BtreeIntegerKey(BtCursor *pCur){
return pCur->info.nKey;
}
+/*
+** Pin or unpin a cursor.
+*/
+SQLITE_PRIVATE void sqlite3BtreeCursorPin(BtCursor *pCur){
+ assert( (pCur->curFlags & BTCF_Pinned)==0 );
+ pCur->curFlags |= BTCF_Pinned;
+}
+SQLITE_PRIVATE void sqlite3BtreeCursorUnpin(BtCursor *pCur){
+ assert( (pCur->curFlags & BTCF_Pinned)!=0 );
+ pCur->curFlags &= ~BTCF_Pinned;
+}
+
#ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC
/*
** Return the offset into the database file for the start of the
@@ -73322,15 +69127,15 @@ SQLITE_PRIVATE sqlite3_int64 sqlite3BtreeMaxRecordSize(BtCursor *pCur){
/*
** Given the page number of an overflow page in the database (parameter
-** ovfl), this function finds the page number of the next page in the
+** ovfl), this function finds the page number of the next page in the
** linked list of overflow pages. If possible, it uses the auto-vacuum
-** pointer-map data instead of reading the content of page ovfl to do so.
+** pointer-map data instead of reading the content of page ovfl to do so.
**
** If an error occurs an SQLite error code is returned. Otherwise:
**
-** The page number of the next overflow page in the linked list is
-** written to *pPgnoNext. If page ovfl is the last page in its linked
-** list, *pPgnoNext is set to zero.
+** The page number of the next overflow page in the linked list is
+** written to *pPgnoNext. If page ovfl is the last page in its linked
+** list, *pPgnoNext is set to zero.
**
** If ppPage is not NULL, and a reference to the MemPage object corresponding
** to page number pOvfl was obtained, then *ppPage is set to point to that
@@ -73354,9 +69159,9 @@ static int getOverflowPage(
#ifndef SQLITE_OMIT_AUTOVACUUM
/* Try to find the next page in the overflow list using the
- ** autovacuum pointer-map pages. Guess that the next page in
- ** the overflow list is page number (ovfl+1). If that guess turns
- ** out to be wrong, fall back to loading the data of page
+ ** autovacuum pointer-map pages. Guess that the next page in
+ ** the overflow list is page number (ovfl+1). If that guess turns
+ ** out to be wrong, fall back to loading the data of page
** number ovfl to determine the next page number.
*/
if( pBt->autoVacuum ){
@@ -73444,8 +69249,8 @@ static int copyPayload(
**
** If the current cursor entry uses one or more overflow pages
** this function may allocate space for and lazily populate
-** the overflow page-list cache array (BtCursor.aOverflow).
-** Subsequent calls use this cache to make seeking to the supplied offset
+** the overflow page-list cache array (BtCursor.aOverflow).
+** Subsequent calls use this cache to make seeking to the supplied offset
** more efficient.
**
** Once an overflow page-list cache has been allocated, it must be
@@ -73461,7 +69266,7 @@ static int accessPayload(
BtCursor *pCur, /* Cursor pointing to entry to read from */
u32 offset, /* Begin reading this far into payload */
u32 amt, /* Read this many bytes */
- unsigned char *pBuf, /* Write the bytes into this buffer */
+ unsigned char *pBuf, /* Write the bytes into this buffer */
int eOp /* zero to read. non-zero to write. */
){
unsigned char *aPayload;
@@ -73552,6 +69357,7 @@ static int accessPayload(
assert( rc==SQLITE_OK && amt>0 );
while( nextPage ){
/* If required, populate the overflow page-list cache. */
+ if( nextPage > pBt->nPage ) return SQLITE_CORRUPT_BKPT;
assert( pCur->aOverflow[iIdx]==0
|| pCur->aOverflow[iIdx]==nextPage
|| CORRUPT_DB );
@@ -73584,12 +69390,12 @@ static int accessPayload(
#ifdef SQLITE_DIRECT_OVERFLOW_READ
/* If all the following are true:
**
- ** 1) this is a read operation, and
+ ** 1) this is a read operation, and
** 2) data is required from the start of this overflow page, and
** 3) there are no dirty pages in the page-cache
** 4) the database is file-backed, and
** 5) the page is not in the WAL file
- ** 6) at least 4 bytes have already been read into the output buffer
+ ** 6) at least 4 bytes have already been read into the output buffer
**
** then data can be read directly from the database file into the
** output buffer, bypassing the page-cache altogether. This speeds
@@ -73697,7 +69503,7 @@ SQLITE_PRIVATE int sqlite3BtreePayloadChecked(BtCursor *pCur, u32 offset, u32 am
#endif /* SQLITE_OMIT_INCRBLOB */
/*
-** Return a pointer to payload information from the entry that the
+** Return a pointer to payload information from the entry that the
** pCur cursor is pointing to. The pointer is to the beginning of
** the key if index btrees (pPage->intKey==0) and is the data for
** table btrees (pPage->intKey==1). The number of bytes of available
@@ -73789,7 +69595,7 @@ static int moveToChild(BtCursor *pCur, u32 newPgno){
#ifdef SQLITE_DEBUG
/*
-** Page pParent is an internal (non-leaf) tree page. This function
+** Page pParent is an internal (non-leaf) tree page. This function
** asserts that page number iChild is the left-child if the iIdx'th
** cell in page pParent. Or, if iIdx is equal to the total number of
** cells in pParent, that page number iChild is the right-child of
@@ -73806,7 +69612,7 @@ static void assertParentIndex(MemPage *pParent, int iIdx, Pgno iChild){
}
}
#else
-# define assertParentIndex(x,y,z)
+# define assertParentIndex(x,y,z)
#endif
/*
@@ -73824,8 +69630,8 @@ static void moveToParent(BtCursor *pCur){
assert( pCur->iPage>0 );
assert( pCur->pPage );
assertParentIndex(
- pCur->apPage[pCur->iPage-1],
- pCur->aiIdx[pCur->iPage-1],
+ pCur->apPage[pCur->iPage-1],
+ pCur->aiIdx[pCur->iPage-1],
pCur->pPage->pgno
);
testcase( pCur->aiIdx[pCur->iPage-1] > pCur->apPage[pCur->iPage-1]->nCell );
@@ -73842,19 +69648,19 @@ static void moveToParent(BtCursor *pCur){
**
** If the table has a virtual root page, then the cursor is moved to point
** to the virtual root page instead of the actual root page. A table has a
-** virtual root page when the actual root page contains no cells and a
+** virtual root page when the actual root page contains no cells and a
** single child page. This can only happen with the table rooted at page 1.
**
-** If the b-tree structure is empty, the cursor state is set to
+** If the b-tree structure is empty, the cursor state is set to
** CURSOR_INVALID and this routine returns SQLITE_EMPTY. Otherwise,
** the cursor is set to point to the first cell located on the root
** (or virtual root) page and the cursor state is set to CURSOR_VALID.
**
** If this function returns successfully, it may be assumed that the
-** page-header flags indicate that the [virtual] root-page is the expected
+** page-header flags indicate that the [virtual] root-page is the expected
** kind of b-tree page (i.e. if when opening the cursor the caller did not
** specify a KeyInfo structure the flags byte is set to 0x05 or 0x0D,
-** indicating a table b-tree, or if the caller did specify a KeyInfo
+** indicating a table b-tree, or if the caller did specify a KeyInfo
** structure the flags byte is set to 0x02 or 0x0A, indicating an index
** b-tree).
*/
@@ -73905,19 +69711,19 @@ static int moveToRoot(BtCursor *pCur){
/* If pCur->pKeyInfo is not NULL, then the caller that opened this cursor
** expected to open it on an index b-tree. Otherwise, if pKeyInfo is
** NULL, the caller expects a table b-tree. If this is not the case,
- ** return an SQLITE_CORRUPT error.
+ ** return an SQLITE_CORRUPT error.
**
** Earlier versions of SQLite assumed that this test could not fail
** if the root page was already loaded when this function was called (i.e.
- ** if pCur->iPage>=0). But this is not so if the database is corrupted
- ** in such a way that page pRoot is linked into a second b-tree table
+ ** if pCur->iPage>=0). But this is not so if the database is corrupted
+ ** in such a way that page pRoot is linked into a second b-tree table
** (or the freelist). */
assert( pRoot->intKey==1 || pRoot->intKey==0 );
if( pRoot->isInit==0 || (pCur->pKeyInfo==0)!=pRoot->intKey ){
return SQLITE_CORRUPT_PAGE(pCur->pPage);
}
-skip_init:
+skip_init:
pCur->ix = 0;
pCur->info.nSize = 0;
pCur->curFlags &= ~(BTCF_AtLast|BTCF_ValidNKey|BTCF_ValidOvfl);
@@ -74017,14 +69823,14 @@ SQLITE_PRIVATE int sqlite3BtreeFirst(BtCursor *pCur, int *pRes){
*/
SQLITE_PRIVATE int sqlite3BtreeLast(BtCursor *pCur, int *pRes){
int rc;
-
+
assert( cursorOwnsBtShared(pCur) );
assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) );
/* If the cursor already points to the last entry, this is a no-op. */
if( CURSOR_VALID==pCur->eState && (pCur->curFlags & BTCF_AtLast)!=0 ){
#ifdef SQLITE_DEBUG
- /* This block serves to assert() that the cursor really does point
+ /* This block serves to assert() that the cursor really does point
** to the last entry in the b-tree. */
int ii;
for(ii=0; iiiPage; ii++){
@@ -74055,10 +69861,10 @@ SQLITE_PRIVATE int sqlite3BtreeLast(BtCursor *pCur, int *pRes){
return rc;
}
-/* Move the cursor so that it points to an entry near the key
+/* Move the cursor so that it points to an entry near the key
** specified by pIdxKey or intKey. Return a success code.
**
-** For INTKEY tables, the intKey parameter is used. pIdxKey
+** For INTKEY tables, the intKey parameter is used. pIdxKey
** must be NULL. For index tables, pIdxKey is used and intKey
** is ignored.
**
@@ -74068,7 +69874,7 @@ SQLITE_PRIVATE int sqlite3BtreeLast(BtCursor *pCur, int *pRes){
** before or after the key.
**
** An integer is written into *pRes which is the result of
-** comparing the key with the entry to which the cursor is
+** comparing the key with the entry to which the cursor is
** pointing. The meaning of the integer written into
** *pRes is as follows:
**
@@ -74083,7 +69889,7 @@ SQLITE_PRIVATE int sqlite3BtreeLast(BtCursor *pCur, int *pRes){
** is larger than intKey/pIdxKey.
**
** For index tables, the pIdxKey->eqSeen field is set to 1 if there
-** exists an entry in the table that exactly matches pIdxKey.
+** exists an entry in the table that exactly matches pIdxKey.
*/
SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked(
BtCursor *pCur, /* The cursor to be moved */
@@ -74139,8 +69945,8 @@ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked(
if( pIdxKey ){
xRecordCompare = sqlite3VdbeFindCompare(pIdxKey);
pIdxKey->errCode = 0;
- assert( pIdxKey->default_rc==1
- || pIdxKey->default_rc==0
+ assert( pIdxKey->default_rc==1
+ || pIdxKey->default_rc==0
|| pIdxKey->default_rc==-1
);
}else{
@@ -74224,9 +70030,9 @@ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked(
/* The maximum supported page-size is 65536 bytes. This means that
** the maximum number of record bytes stored on an index B-Tree
** page is less than 16384 bytes and may be stored as a 2-byte
- ** varint. This information is used to attempt to avoid parsing
- ** the entire cell by checking for the cases where the record is
- ** stored entirely within the b-tree page by inspecting the first
+ ** varint. This information is used to attempt to avoid parsing
+ ** the entire cell by checking for the cases where the record is
+ ** stored entirely within the b-tree page by inspecting the first
** 2 bytes of the cell.
*/
nCell = pCell[0];
@@ -74236,10 +70042,10 @@ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked(
** b-tree page. */
testcase( pCell+nCell+1==pPage->aDataEnd );
c = xRecordCompare(nCell, (void*)&pCell[1], pIdxKey);
- }else if( !(pCell[1] & 0x80)
+ }else if( !(pCell[1] & 0x80)
&& (nCell = ((nCell&0x7f)<<7) + pCell[1])<=pPage->maxLocal
){
- /* The record-size field is a 2 byte varint and the record
+ /* The record-size field is a 2 byte varint and the record
** fits entirely on the main b-tree page. */
testcase( pCell+nCell+2==pPage->aDataEnd );
c = xRecordCompare(nCell, (void*)&pCell[2], pIdxKey);
@@ -74247,10 +70053,10 @@ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked(
/* The record flows over onto one or more overflow pages. In
** this case the whole cell needs to be parsed, a buffer allocated
** and accessPayload() used to retrieve the record into the
- ** buffer before VdbeRecordCompare() can be called.
+ ** buffer before VdbeRecordCompare() can be called.
**
** If the record is corrupt, the xRecordCompare routine may read
- ** up to two varints past the end of the buffer. An extra 18
+ ** up to two varints past the end of the buffer. An extra 18
** bytes of padding is allocated at the end of the buffer in
** case this happens. */
void *pCellKey;
@@ -74282,7 +70088,7 @@ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked(
c = sqlite3VdbeRecordCompare(nCell, pCellKey, pIdxKey);
sqlite3_free(pCellKey);
}
- assert(
+ assert(
(pIdxKey->errCode!=SQLITE_CORRUPT || c==0)
&& (pIdxKey->errCode!=SQLITE_NOMEM || pCur->pBtree->db->mallocFailed)
);
@@ -74346,7 +70152,7 @@ SQLITE_PRIVATE int sqlite3BtreeEof(BtCursor *pCur){
/*
** Return an estimate for the number of rows in the table that pCur is
-** pointing to. Return a negative number if no estimate is currently
+** pointing to. Return a negative number if no estimate is currently
** available.
*/
SQLITE_PRIVATE i64 sqlite3BtreeRowCountEst(BtCursor *pCur){
@@ -74370,7 +70176,7 @@ SQLITE_PRIVATE i64 sqlite3BtreeRowCountEst(BtCursor *pCur){
}
/*
-** Advance the cursor to the next entry in the database.
+** Advance the cursor to the next entry in the database.
** Return value:
**
** SQLITE_OK success
@@ -74423,12 +70229,15 @@ static SQLITE_NOINLINE int btreeNext(BtCursor *pCur){
return SQLITE_CORRUPT_BKPT;
}
- /* If the database file is corrupt, it is possible for the value of idx
+ /* If the database file is corrupt, it is possible for the value of idx
** to be invalid here. This can only occur if a second cursor modifies
** the page while cursor pCur is holding a reference to it. Which can
** only happen if the database is corrupt in such a way as to link the
- ** page into more than one b-tree structure. */
- testcase( idx>pPage->nCell );
+ ** page into more than one b-tree structure.
+ **
+ ** Update 2019-12-23: appears to long longer be possible after the
+ ** addition of anotherValidCursor() condition on balance_deeper(). */
+ harmless( idx>pPage->nCell );
if( idx>=pPage->nCell ){
if( !pPage->leaf ){
@@ -74572,7 +70381,7 @@ SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor *pCur, int flags){
** SQLITE_OK is returned on success. Any other return value indicates
** an error. *ppPage is set to NULL in the event of an error.
**
-** If the "nearby" parameter is not 0, then an effort is made to
+** If the "nearby" parameter is not 0, then an effort is made to
** locate a page close to the page number "nearby". This can be used in an
** attempt to keep related pages close to each other in the database file,
** which in turn can make database access faster.
@@ -74614,7 +70423,7 @@ static int allocateBtreePage(
Pgno iTrunk;
u8 searchList = 0; /* If the free-list must be searched for 'nearby' */
u32 nSearch = 0; /* Count of the number of search attempts */
-
+
/* If eMode==BTALLOC_EXACT and a query of the pointer-map
** shows that the page 'nearby' is somewhere on the free-list, then
** the entire-list will be searched for that page.
@@ -74677,8 +70486,8 @@ static int allocateBtreePage(
** is the number of leaf page pointers to follow. */
k = get4byte(&pTrunk->aData[4]);
if( k==0 && !searchList ){
- /* The trunk has no leaves and the list is not being searched.
- ** So extract the trunk page itself and use it as the newly
+ /* The trunk has no leaves and the list is not being searched.
+ ** So extract the trunk page itself and use it as the newly
** allocated page */
assert( pPrevTrunk==0 );
rc = sqlite3PagerWrite(pTrunk->pDbPage);
@@ -74695,8 +70504,8 @@ static int allocateBtreePage(
rc = SQLITE_CORRUPT_PGNO(iTrunk);
goto end_allocate_page;
#ifndef SQLITE_OMIT_AUTOVACUUM
- }else if( searchList
- && (nearby==iTrunk || (iTrunkaData[0], &pTrunk->aData[0], 4);
}
}else{
- /* The trunk page is required by the caller but it contains
+ /* The trunk page is required by the caller but it contains
** pointers to free-list leaves. The first leaf becomes a trunk
** page in this case.
*/
MemPage *pNewTrunk;
Pgno iNewTrunk = get4byte(&pTrunk->aData[8]);
- if( iNewTrunk>mxPage ){
+ if( iNewTrunk>mxPage ){
rc = SQLITE_CORRUPT_PGNO(iTrunk);
goto end_allocate_page;
}
@@ -74795,8 +70604,8 @@ static int allocateBtreePage(
goto end_allocate_page;
}
testcase( iPage==mxPage );
- if( !searchList
- || (iPage==nearby || (iPagepPage1; /* Local reference to page 1 */
MemPage *pPage; /* Page being freed. May be NULL. */
int rc; /* Return Code */
@@ -74964,6 +70773,10 @@ static int freePage2(BtShared *pBt, MemPage *pMemPage, Pgno iPage){
u32 nLeaf; /* Initial number of leaf cells on trunk page */
iTrunk = get4byte(&pPage1->aData[32]);
+ if( iTrunk>btreePagecount(pBt) ){
+ rc = SQLITE_CORRUPT_BKPT;
+ goto freepage_out;
+ }
rc = btreeGetPage(pBt, iTrunk, &pTrunk, 0);
if( rc!=SQLITE_OK ){
goto freepage_out;
@@ -75011,7 +70824,7 @@ static int freePage2(BtShared *pBt, MemPage *pMemPage, Pgno iPage){
/* If control flows to this point, then it was not possible to add the
** the page being freed as a leaf page of the first trunk in the free-list.
- ** Possibly because the free-list is empty, or possibly because the
+ ** Possibly because the free-list is empty, or possibly because the
** first trunk in the free-list is full. Either way, the page being freed
** will become the new first trunk page in the free-list.
*/
@@ -75072,15 +70885,15 @@ static int clearCell(
assert( pBt->usableSize > 4 );
ovflPageSize = pBt->usableSize - 4;
nOvfl = (pInfo->nPayload - pInfo->nLocal + ovflPageSize - 1)/ovflPageSize;
- assert( nOvfl>0 ||
+ assert( nOvfl>0 ||
(CORRUPT_DB && (pInfo->nPayload + ovflPageSize)btreePagecount(pBt) ){
- /* 0 is not a legal page number and page 1 cannot be an
- ** overflow page. Therefore if ovflPgno<2 or past the end of the
+ /* 0 is not a legal page number and page 1 cannot be an
+ ** overflow page. Therefore if ovflPgno<2 or past the end of the
** file the database must be corrupt. */
return SQLITE_CORRUPT_BKPT;
}
@@ -75092,11 +70905,11 @@ static int clearCell(
if( ( pOvfl || ((pOvfl = btreePageLookup(pBt, ovflPgno))!=0) )
&& sqlite3PagerPageRefcount(pOvfl->pDbPage)!=1
){
- /* There is no reason any cursor should have an outstanding reference
+ /* There is no reason any cursor should have an outstanding reference
** to an overflow page belonging to a cell that is being deleted/updated.
- ** So if there exists more than one reference to this page, then it
- ** must not really be an overflow page and the database must be corrupt.
- ** It is helpful to detect this before calling freePage2(), as
+ ** So if there exists more than one reference to this page, then it
+ ** must not really be an overflow page and the database must be corrupt.
+ ** It is helpful to detect this before calling freePage2(), as
** freePage2() may zero the page contents if secure-delete mode is
** enabled. If this 'overflow' page happens to be a page that the
** caller is iterating through or using in some other way, this
@@ -75167,7 +70980,7 @@ static int fillInCell(
pSrc = pX->pKey;
nHeader += putVarint32(&pCell[nHeader], nPayload);
}
-
+
/* Fill in the payload */
pPayload = &pCell[nHeader];
if( nPayload<=pPage->maxLocal ){
@@ -75258,8 +71071,8 @@ static int fillInCell(
if( pBt->autoVacuum ){
do{
pgnoOvfl++;
- } while(
- PTRMAP_ISPAGE(pBt, pgnoOvfl) || pgnoOvfl==PENDING_BYTE_PAGE(pBt)
+ } while(
+ PTRMAP_ISPAGE(pBt, pgnoOvfl) || pgnoOvfl==PENDING_BYTE_PAGE(pBt)
);
}
#endif
@@ -75267,9 +71080,9 @@ static int fillInCell(
#ifndef SQLITE_OMIT_AUTOVACUUM
/* If the database supports auto-vacuum, and the second or subsequent
** overflow page is being allocated, add an entry to the pointer-map
- ** for that page now.
+ ** for that page now.
**
- ** If this is the first overflow page, then write a partial entry
+ ** If this is the first overflow page, then write a partial entry
** to the pointer-map. If we write nothing to this pointer-map slot,
** then the optimistic overflow chain processing in clearCell()
** may misinterpret the uninitialized values and delete the
@@ -75368,8 +71181,8 @@ static void dropCell(MemPage *pPage, int idx, int sz, int *pRC){
** will not fit, then make a copy of the cell content into pTemp if
** pTemp is not null. Regardless of pTemp, allocate a new entry
** in pPage->apOvfl[] and make it point to the cell content (either
-** in pTemp or the original pCell) and also record its index.
-** Allocating a new entry in pPage->aCell[] implies that
+** in pTemp or the original pCell) and also record its index.
+** Allocating a new entry in pPage->aCell[] implies that
** pPage->nOverflow is incremented.
**
** *pRC must be SQLITE_OK when this routine is called.
@@ -75594,16 +71407,16 @@ static u16 cachedCellSize(CellArray *p, int N){
}
/*
-** Array apCell[] contains pointers to nCell b-tree page cells. The
+** Array apCell[] contains pointers to nCell b-tree page cells. The
** szCell[] array contains the size in bytes of each cell. This function
** replaces the current contents of page pPg with the contents of the cell
** array.
**
** Some of the cells in apCell[] may currently be stored in pPg. This
-** function works around problems caused by this by making a copy of any
+** function works around problems caused by this by making a copy of any
** such cells before overwriting the page data.
**
-** The MemPage.nFree field is invalidated by this function. It is the
+** The MemPage.nFree field is invalidated by this function. It is the
** responsibility of the caller to set it correctly.
*/
static int rebuildPage(
@@ -75627,7 +71440,7 @@ static int rebuildPage(
assert( i(u32)usableSize ){ j = 0; }
+ if( NEVER(j>(u32)usableSize) ){ j = 0; }
memcpy(&pTmp[j], &aData[j], usableSize - j);
for(k=0; pCArray->ixNx[k]<=i && ALWAYS(kxCellSize(pPg, pCell) || CORRUPT_DB );
- testcase( sz!=pPg->xCellSize(pPg,pCell) );
+ testcase( sz!=pPg->xCellSize(pPg,pCell) )
i++;
if( i>=iEnd ) break;
if( pCArray->ixNx[k]<=i ){
@@ -75686,7 +71499,7 @@ static int rebuildPage(
** cell in the array. It is the responsibility of the caller to ensure
** that it is safe to overwrite this part of the cell-pointer array.
**
-** When this function is called, *ppData points to the start of the
+** When this function is called, *ppData points to the start of the
** content area on page pPg. If the size of the content area is extended,
** *ppData is updated to point to the new start of the content area
** before returning.
@@ -75845,7 +71658,7 @@ static int editPage(
assert( nCell>=0 );
if( iOldnCell ) return SQLITE_CORRUPT_BKPT;
+ if( NEVER(nShift>nCell) ) return SQLITE_CORRUPT_BKPT;
memmove(pPg->aCellIdx, &pPg->aCellIdx[nShift*2], nCell*2);
nCell -= nShift;
}
@@ -75956,12 +71769,12 @@ static int balance_quick(MemPage *pParent, MemPage *pPage, u8 *pSpace){
assert( sqlite3_mutex_held(pPage->pBt->mutex) );
assert( sqlite3PagerIswriteable(pParent->pDbPage) );
assert( pPage->nOverflow==1 );
-
+
if( pPage->nCell==0 ) return SQLITE_CORRUPT_BKPT; /* dbfuzz001.test */
assert( pPage->nFree>=0 );
assert( pParent->nFree>=0 );
- /* Allocate a new page. This page will become the right-sibling of
+ /* Allocate a new page. This page will become the right-sibling of
** pPage. Make the parent page writable, so that the new divider cell
** may be inserted. If both these operations are successful, proceed.
*/
@@ -75992,7 +71805,7 @@ static int balance_quick(MemPage *pParent, MemPage *pPage, u8 *pSpace){
pNew->nFree = pBt->usableSize - pNew->cellOffset - 2 - szCell;
/* If this is an auto-vacuum database, update the pointer map
- ** with entries for the new page, and any pointer from the
+ ** with entries for the new page, and any pointer from the
** cell on the page to an overflow page. If either of these
** operations fails, the return code is set, but the contents
** of the parent page are still manipulated by thh code below.
@@ -76006,14 +71819,14 @@ static int balance_quick(MemPage *pParent, MemPage *pPage, u8 *pSpace){
ptrmapPutOvflPtr(pNew, pNew, pCell, &rc);
}
}
-
+
/* Create a divider cell to insert into pParent. The divider cell
** consists of a 4-byte page number (the page number of pPage) and
** a variable length key value (which must be the same value as the
** largest key on pPage).
**
- ** To find the largest key value on pPage, first find the right-most
- ** cell on pPage. The first two fields of this cell are the
+ ** To find the largest key value on pPage, first find the right-most
+ ** cell on pPage. The first two fields of this cell are the
** record-length (a variable length integer at most 32-bits in size)
** and the key value (a variable length integer, may have any value).
** The first of the while(...) loops below skips over the record-length
@@ -76034,7 +71847,7 @@ static int balance_quick(MemPage *pParent, MemPage *pPage, u8 *pSpace){
/* Set the right-child pointer of pParent to point to the new page. */
put4byte(&pParent->aData[pParent->hdrOffset+8], pgnoNew);
-
+
/* Release the reference to the new page. */
releasePage(pNew);
}
@@ -76046,7 +71859,7 @@ static int balance_quick(MemPage *pParent, MemPage *pPage, u8 *pSpace){
#if 0
/*
** This function does not contribute anything to the operation of SQLite.
-** it is sometimes activated temporarily while debugging code responsible
+** it is sometimes activated temporarily while debugging code responsible
** for setting pointer-map entries.
*/
static int ptrmapCheckPages(MemPage **apPage, int nPage){
@@ -76061,7 +71874,7 @@ static int ptrmapCheckPages(MemPage **apPage, int nPage){
for(j=0; jnCell; j++){
CellInfo info;
u8 *z;
-
+
z = findCell(pPage, j);
pPage->xParseCell(pPage, z, &info);
if( info.nLocalpgno==1) ? 100 : 0);
int rc;
int iData;
-
-
+
+
assert( pFrom->isInit );
assert( pFrom->nFree>=iToHdr );
assert( get2byte(&aFrom[iFromHdr+5]) <= (int)pBt->usableSize );
-
+
/* Copy the b-tree node content from page pFrom to page pTo. */
iData = get2byte(&aFrom[iFromHdr+5]);
memcpy(&aTo[iData], &aFrom[iData], pBt->usableSize-iData);
memcpy(&aTo[iToHdr], &aFrom[iFromHdr], pFrom->cellOffset + 2*pFrom->nCell);
-
+
/* Reinitialize page pTo so that the contents of the MemPage structure
** match the new data. The initialization of pTo can actually fail under
- ** fairly obscure circumstances, even though it is a copy of initialized
+ ** fairly obscure circumstances, even though it is a copy of initialized
** page pFrom.
*/
pTo->isInit = 0;
@@ -76134,7 +71947,7 @@ static void copyNodeContent(MemPage *pFrom, MemPage *pTo, int *pRC){
*pRC = rc;
return;
}
-
+
/* If this is an auto-vacuum database, update the pointer-map entries
** for any b-tree or overflow pages that pTo now contains the pointers to.
*/
@@ -76149,13 +71962,13 @@ static void copyNodeContent(MemPage *pFrom, MemPage *pTo, int *pRC){
** (hereafter "the page") and up to 2 siblings so that all pages have about the
** same amount of free space. Usually a single sibling on either side of the
** page are used in the balancing, though both siblings might come from one
-** side if the page is the first or last child of its parent. If the page
+** side if the page is the first or last child of its parent. If the page
** has fewer than 2 siblings (something which can only happen if the page
** is a root page or a child of a root page) then all available siblings
** participate in the balancing.
**
-** The number of siblings of the page might be increased or decreased by
-** one or two in an effort to keep pages nearly full but not over full.
+** The number of siblings of the page might be increased or decreased by
+** one or two in an effort to keep pages nearly full but not over full.
**
** Note that when this routine is called, some of the cells on the page
** might not actually be stored in MemPage.aData[]. This can happen
@@ -76166,7 +71979,7 @@ static void copyNodeContent(MemPage *pFrom, MemPage *pTo, int *pRC){
** inserted into or removed from the parent page (pParent). Doing so
** may cause the parent page to become overfull or underfull. If this
** happens, it is the responsibility of the caller to invoke the correct
-** balancing routine to fix this problem (see the balance() routine).
+** balancing routine to fix this problem (see the balance() routine).
**
** If this routine fails for any reason, it might leave the database
** in a corrupted state. So if this routine fails, the database should
@@ -76181,7 +71994,7 @@ static void copyNodeContent(MemPage *pFrom, MemPage *pTo, int *pRC){
** of the page-size, the aOvflSpace[] buffer is guaranteed to be large
** enough for all overflow cells.
**
-** If aOvflSpace is set to a null pointer, this function returns
+** If aOvflSpace is set to a null pointer, this function returns
** SQLITE_NOMEM.
*/
static int balance_nonroot(
@@ -76228,7 +72041,7 @@ static int balance_nonroot(
assert( sqlite3PagerIswriteable(pParent->pDbPage) );
/* At this point pParent may have at most one overflow cell. And if
- ** this overflow cell is present, it must be the cell with
+ ** this overflow cell is present, it must be the cell with
** index iParentIdx. This scenario comes about when this function
** is called (indirectly) from sqlite3BtreeDelete().
*/
@@ -76240,11 +72053,11 @@ static int balance_nonroot(
}
assert( pParent->nFree>=0 );
- /* Find the sibling pages to balance. Also locate the cells in pParent
- ** that divide the siblings. An attempt is made to find NN siblings on
- ** either side of pPage. More siblings are taken from one side, however,
+ /* Find the sibling pages to balance. Also locate the cells in pParent
+ ** that divide the siblings. An attempt is made to find NN siblings on
+ ** either side of pPage. More siblings are taken from one side, however,
** if there are fewer than NN siblings on the other side. If pParent
- ** has NB or fewer children then all children of pParent are taken.
+ ** has NB or fewer children then all children of pParent are taken.
**
** This loop also drops the divider cells from the parent page. This
** way, the remainder of the function does not have to deal with any
@@ -76256,7 +72069,7 @@ static int balance_nonroot(
nxDiv = 0;
}else{
assert( bBulk==0 || bBulk==1 );
- if( iParentIdx==0 ){
+ if( iParentIdx==0 ){
nxDiv = 0;
}else if( iParentIdx==i ){
nxDiv = i-2+bBulk;
@@ -76302,7 +72115,7 @@ static int balance_nonroot(
** This is safe because dropping a cell only overwrites the first
** four bytes of it, and this function does not need the first
** four bytes of the divider cell. So the pointer is safe to use
- ** later on.
+ ** later on.
**
** But not if we are in secure-delete mode. In secure-delete mode,
** the dropCell() routine will overwrite the entire cell with zeroes.
@@ -76468,7 +72281,7 @@ static int balance_nonroot(
** Figure out the number of pages needed to hold all b.nCell cells.
** Store this number in "k". Also compute szNew[] which is the total
** size of all cells on the i-th page and cntNew[] which is the index
- ** in b.apCell[] of the cell that divides page i from page i+1.
+ ** in b.apCell[] of the cell that divides page i from page i+1.
** cntNew[k] should equal b.nCell.
**
** Values computed by this block:
@@ -76478,7 +72291,7 @@ static int balance_nonroot(
** cntNew[i]: Index in b.apCell[] and b.szCell[] for the first cell to
** the right of the i-th sibling page.
** usableSpace: Number of bytes of space available on each sibling.
- **
+ **
*/
usableSpace = pBt->usableSize - 12 + leafCorrection;
for(i=k=0; ipgno);
/* If the sibling pages are not leaves, ensure that the right-child pointer
- ** of the right-most new sibling page is set to the value that was
+ ** of the right-most new sibling page is set to the value that was
** originally in the same field of the right-most old sibling page. */
if( (pageFlags & PTF_LEAF)==0 && nOld!=nNew ){
MemPage *pOld = (nNew>nOld ? apNew : apOld)[nOld-1];
memcpy(&apNew[nNew-1]->aData[8], &pOld->aData[8], 4);
}
- /* Make any required updates to pointer map entries associated with
+ /* Make any required updates to pointer map entries associated with
** cells stored on sibling pages following the balance operation. Pointer
** map entries associated with divider cells are set by the insertCell()
** routine. The associated pointer map entries are:
@@ -76713,9 +72526,9 @@ static int balance_nonroot(
** b) if the sibling pages are not leaves, the child page associated
** with the cell.
**
- ** If the sibling pages are not leaves, then the pointer map entry
- ** associated with the right-child of each sibling may also need to be
- ** updated. This happens below, after the sibling pages have been
+ ** If the sibling pages are not leaves, then the pointer map entry
+ ** associated with the right-child of each sibling may also need to be
+ ** updated. This happens below, after the sibling pages have been
** populated, not here.
*/
if( ISAUTOVACUUM ){
@@ -76740,7 +72553,7 @@ static int balance_nonroot(
}
/* Cell pCell is destined for new sibling page pNew. Originally, it
- ** was either part of sibling page iOld (possibly an overflow cell),
+ ** was either part of sibling page iOld (possibly an overflow cell),
** or else the divider cell to the left of sibling page iOld. So,
** if sibling page iOld had the same page number as pNew, and if
** pCell really was a part of sibling page iOld (not a divider or
@@ -76776,9 +72589,9 @@ static int balance_nonroot(
if( !pNew->leaf ){
memcpy(&pNew->aData[8], pCell, 4);
}else if( leafData ){
- /* If the tree is a leaf-data tree, and the siblings are leaves,
- ** then there is no divider cell in b.apCell[]. Instead, the divider
- ** cell consists of the integer key for the right-most cell of
+ /* If the tree is a leaf-data tree, and the siblings are leaves,
+ ** then there is no divider cell in b.apCell[]. Instead, the divider
+ ** cell consists of the integer key for the right-most cell of
** the sibling-page assembled above only.
*/
CellInfo info;
@@ -76791,9 +72604,9 @@ static int balance_nonroot(
pCell -= 4;
/* Obscure case for non-leaf-data trees: If the cell at pCell was
** previously stored on a leaf node, and its reported size was 4
- ** bytes, then it may actually be smaller than this
+ ** bytes, then it may actually be smaller than this
** (see btreeParseCellPtr(), 4 bytes is the minimum size of
- ** any cell). But it is important to pass the correct size to
+ ** any cell). But it is important to pass the correct size to
** insertCell(), so reparse the cell now.
**
** This can only happen for b-trees used to evaluate "IN (SELECT ...)"
@@ -76885,8 +72698,8 @@ static int balance_nonroot(
** b-tree structure by one. This is described as the "balance-shallower"
** sub-algorithm in some documentation.
**
- ** If this is an auto-vacuum database, the call to copyNodeContent()
- ** sets all pointer-map entries corresponding to database image pages
+ ** If this is an auto-vacuum database, the call to copyNodeContent()
+ ** sets all pointer-map entries corresponding to database image pages
** for which the pointer is stored within the content being copied.
**
** It is critical that the child page be defragmented before being
@@ -76897,7 +72710,7 @@ static int balance_nonroot(
assert( nNew==1 || CORRUPT_DB );
rc = defragmentPage(apNew[0], -1);
testcase( rc!=SQLITE_OK );
- assert( apNew[0]->nFree ==
+ assert( apNew[0]->nFree ==
(get2byteNotZero(&apNew[0]->aData[5]) - apNew[0]->cellOffset
- apNew[0]->nCell*2)
|| rc!=SQLITE_OK
@@ -76927,7 +72740,7 @@ static int balance_nonroot(
#if 0
if( ISAUTOVACUUM && rc==SQLITE_OK && apNew[0]->isInit ){
/* The ptrmapCheckPages() contains assert() statements that verify that
- ** all pointer map pages are set correctly. This is helpful while
+ ** all pointer map pages are set correctly. This is helpful while
** debugging. This is usually disabled because a corrupt database may
** cause an assert() statement to fail. */
ptrmapCheckPages(apNew, nNew);
@@ -76957,15 +72770,15 @@ balance_cleanup:
**
** A new child page is allocated and the contents of the current root
** page, including overflow cells, are copied into the child. The root
-** page is then overwritten to make it an empty page with the right-child
+** page is then overwritten to make it an empty page with the right-child
** pointer pointing to the new page.
**
-** Before returning, all pointer-map entries corresponding to pages
+** Before returning, all pointer-map entries corresponding to pages
** that the new child-page now contains pointers to are updated. The
** entry corresponding to the new right-child pointer of the root
** page is also updated.
**
-** If successful, *ppChild is set to contain a reference to the child
+** If successful, *ppChild is set to contain a reference to the child
** page and SQLITE_OK is returned. In this case the caller is required
** to call releasePage() on *ppChild exactly once. If an error occurs,
** an error code is returned and *ppChild is set to 0.
@@ -76979,7 +72792,7 @@ static int balance_deeper(MemPage *pRoot, MemPage **ppChild){
assert( pRoot->nOverflow>0 );
assert( sqlite3_mutex_held(pBt->mutex) );
- /* Make pRoot, the root page of the b-tree, writable. Allocate a new
+ /* Make pRoot, the root page of the b-tree, writable. Allocate a new
** page that will become the new right-child of pPage. Copy the contents
** of the node stored on pRoot into the new child page.
*/
@@ -77017,10 +72830,34 @@ static int balance_deeper(MemPage *pRoot, MemPage **ppChild){
return SQLITE_OK;
}
+/*
+** Return SQLITE_CORRUPT if any cursor other than pCur is currently valid
+** on the same B-tree as pCur.
+**
+** This can if a database is corrupt with two or more SQL tables
+** pointing to the same b-tree. If an insert occurs on one SQL table
+** and causes a BEFORE TRIGGER to do a secondary insert on the other SQL
+** table linked to the same b-tree. If the secondary insert causes a
+** rebalance, that can change content out from under the cursor on the
+** first SQL table, violating invariants on the first insert.
+*/
+static int anotherValidCursor(BtCursor *pCur){
+ BtCursor *pOther;
+ for(pOther=pCur->pBt->pCursor; pOther; pOther=pOther->pNext){
+ if( pOther!=pCur
+ && pOther->eState==CURSOR_VALID
+ && pOther->pPage==pCur->pPage
+ ){
+ return SQLITE_CORRUPT_BKPT;
+ }
+ }
+ return SQLITE_OK;
+}
+
/*
** The page that pCur currently points to has just been modified in
** some way. This function figures out if this modification means the
-** tree needs to be balanced, and if so calls the appropriate balancing
+** tree needs to be balanced, and if so calls the appropriate balancing
** routine. Balancing routines are:
**
** balance_quick()
@@ -77044,12 +72881,12 @@ static int balance(BtCursor *pCur){
if( pPage->nOverflow==0 && pPage->nFree<=nMin ){
break;
}else if( (iPage = pCur->iPage)==0 ){
- if( pPage->nOverflow ){
+ if( pPage->nOverflow && (rc = anotherValidCursor(pCur))==SQLITE_OK ){
/* The root page of the b-tree is overfull. In this case call the
** balance_deeper() function to create a new child for the root-page
** and copy the current contents of the root-page to it. The
** next iteration of the do-loop will balance the child page.
- */
+ */
assert( balance_deeper_called==0 );
VVA_ONLY( balance_deeper_called++ );
rc = balance_deeper(pPage, &pCur->apPage[1]);
@@ -77083,17 +72920,17 @@ static int balance(BtCursor *pCur){
/* Call balance_quick() to create a new sibling of pPage on which
** to store the overflow cell. balance_quick() inserts a new cell
** into pParent, which may cause pParent overflow. If this
- ** happens, the next iteration of the do-loop will balance pParent
+ ** happens, the next iteration of the do-loop will balance pParent
** use either balance_nonroot() or balance_deeper(). Until this
** happens, the overflow cell is stored in the aBalanceQuickSpace[]
- ** buffer.
+ ** buffer.
**
** The purpose of the following assert() is to check that only a
** single call to balance_quick() is made for each call to this
** function. If this were not verified, a subtle bug involving reuse
** of the aBalanceQuickSpace[] might sneak in.
*/
- assert( balance_quick_called==0 );
+ assert( balance_quick_called==0 );
VVA_ONLY( balance_quick_called++ );
rc = balance_quick(pParent, pPage, aBalanceQuickSpace);
}else
@@ -77104,15 +72941,15 @@ static int balance(BtCursor *pCur){
** modifying the contents of pParent, which may cause pParent to
** become overfull or underfull. The next iteration of the do-loop
** will balance the parent page to correct this.
- **
+ **
** If the parent page becomes overfull, the overflow cell or cells
- ** are stored in the pSpace buffer allocated immediately below.
+ ** are stored in the pSpace buffer allocated immediately below.
** A subsequent iteration of the do-loop will deal with this by
** calling balance_nonroot() (balance_deeper() may be called first,
** but it doesn't deal with overflow cells - just moves them to a
- ** different page). Once this subsequent call to balance_nonroot()
+ ** different page). Once this subsequent call to balance_nonroot()
** has completed, it is safe to release the pSpace buffer used by
- ** the previous call, as the overflow cell data will have been
+ ** the previous call, as the overflow cell data will have been
** copied either into the body of a database page or into the new
** pSpace buffer passed to the latter call to balance_nonroot().
*/
@@ -77120,9 +72957,9 @@ static int balance(BtCursor *pCur){
rc = balance_nonroot(pParent, iIdx, pSpace, iPage==1,
pCur->hints&BTREE_BULKLOAD);
if( pFree ){
- /* If pFree is not NULL, it points to the pSpace buffer used
+ /* If pFree is not NULL, it points to the pSpace buffer used
** by a previous call to balance_nonroot(). Its contents are
- ** now stored either on real database pages or within the
+ ** now stored either on real database pages or within the
** new pSpace buffer, so it may be safely freed here. */
sqlite3PageFree(pFree);
}
@@ -77241,7 +73078,7 @@ static int btreeOverwriteCell(BtCursor *pCur, const BtreePayload *pX){
if( rc ) return rc;
iOffset += ovflPageSize;
}while( iOffsetpKeyInfo==0 ){
assert( pX->pKey==0 );
- /* If this is an insert into a table b-tree, invalidate any incrblob
+ /* If this is an insert into a table b-tree, invalidate any incrblob
** cursors open on the row being replaced */
invalidateIncrblobCursors(p, pCur->pgnoRoot, pX->nKey, 0);
- /* If BTREE_SAVEPOSITION is set, the cursor must already be pointing
+ /* If BTREE_SAVEPOSITION is set, the cursor must already be pointing
** to a row with the same key as the new entry being inserted.
*/
#ifdef SQLITE_DEBUG
if( flags & BTREE_SAVEPOSITION ){
assert( pCur->curFlags & BTCF_ValidNKey );
assert( pX->nKey==pCur->info.nKey );
- assert( pCur->info.nSize!=0 );
assert( loc==0 );
}
#endif
@@ -77371,7 +73207,7 @@ SQLITE_PRIVATE int sqlite3BtreeInsert(
}else{
/* This is an index or a WITHOUT ROWID table */
- /* If BTREE_SAVEPOSITION is set, the cursor must already be pointing
+ /* If BTREE_SAVEPOSITION is set, the cursor must already be pointing
** to a row with the same key as the new entry being inserted.
*/
assert( (flags & BTREE_SAVEPOSITION)==0 || loc==0 );
@@ -77415,13 +73251,19 @@ SQLITE_PRIVATE int sqlite3BtreeInsert(
}
}
- assert( pCur->eState==CURSOR_VALID || (pCur->eState==CURSOR_INVALID && loc) );
+ assert( pCur->eState==CURSOR_VALID
+ || (pCur->eState==CURSOR_INVALID && loc)
+ || CORRUPT_DB );
pPage = pCur->pPage;
assert( pPage->intKey || pX->nKey>=0 );
assert( pPage->leaf || !pPage->intKey );
if( pPage->nFree<0 ){
- rc = btreeComputeFreeSpace(pPage);
+ if( pCur->eState>CURSOR_INVALID ){
+ rc = SQLITE_CORRUPT_BKPT;
+ }else{
+ rc = btreeComputeFreeSpace(pPage);
+ }
if( rc ) return rc;
}
@@ -77450,14 +73292,14 @@ SQLITE_PRIVATE int sqlite3BtreeInsert(
rc = clearCell(pPage, oldCell, &info);
testcase( pCur->curFlags & BTCF_ValidOvfl );
invalidateOverflowCache(pCur);
- if( info.nSize==szNew && info.nLocal==info.nPayload
+ if( info.nSize==szNew && info.nLocal==info.nPayload
&& (!ISAUTOVACUUM || szNewminLocal)
){
/* Overwrite the old cell with the new if they are the same size.
** We could also try to do this if the old cell is smaller, then add
** the leftover space to the free list. But experiments show that
** doing that is no faster then skipping this optimization and just
- ** calling dropCell() and insertCell().
+ ** calling dropCell() and insertCell().
**
** This optimization cannot be used on an autovacuum database if the
** new entry uses overflow pages, as the insertCell() call below is
@@ -77485,7 +73327,7 @@ SQLITE_PRIVATE int sqlite3BtreeInsert(
assert( pPage->nOverflow==0 || rc==SQLITE_OK );
assert( rc!=SQLITE_OK || pPage->nCell>0 || pPage->nOverflow>0 );
- /* If no error has occurred and pPage has an overflow cell, call balance()
+ /* If no error has occurred and pPage has an overflow cell, call balance()
** to redistribute the cells within the tree. Since balance() may move
** the cursor, zero the BtCursor.info.nSize and BTCF_ValidNKey
** variables.
@@ -77512,7 +73354,7 @@ SQLITE_PRIVATE int sqlite3BtreeInsert(
rc = balance(pCur);
/* Must make sure nOverflow is reset to zero even if the balance()
- ** fails. Internal data structure corruption will result otherwise.
+ ** fails. Internal data structure corruption will result otherwise.
** Also, set the cursor state to invalid. This stops saveCursorPosition()
** from trying to save the current position of the cursor. */
pCur->pPage->nOverflow = 0;
@@ -77539,7 +73381,7 @@ end_insert:
}
/*
-** Delete the entry that the cursor is pointing to.
+** Delete the entry that the cursor is pointing to.
**
** If the BTREE_SAVEPOSITION bit of the flags parameter is zero, then
** the cursor is left pointing at an arbitrary location after the delete.
@@ -77557,12 +73399,12 @@ end_insert:
*/
SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur, u8 flags){
Btree *p = pCur->pBtree;
- BtShared *pBt = p->pBt;
+ BtShared *pBt = p->pBt;
int rc; /* Return code */
MemPage *pPage; /* Page to delete cell from */
unsigned char *pCell; /* Pointer to cell to delete */
int iCellIdx; /* Index of cell to delete */
- int iCellDepth; /* Depth of node containing pCell */
+ int iCellDepth; /* Depth of node containing pCell */
CellInfo info; /* Size of the cell being deleted */
int bSkipnext = 0; /* Leaf cursor in SKIPNEXT state */
u8 bPreserve = flags & BTREE_SAVEPOSITION; /* Keep cursor valid */
@@ -77589,14 +73431,14 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur, u8 flags){
/* If the bPreserve flag is set to true, then the cursor position must
** be preserved following this delete operation. If the current delete
** will cause a b-tree rebalance, then this is done by saving the cursor
- ** key and leaving the cursor in CURSOR_REQUIRESEEK state before
- ** returning.
+ ** key and leaving the cursor in CURSOR_REQUIRESEEK state before
+ ** returning.
**
** Or, if the current delete will not cause a rebalance, then the cursor
** will be left in CURSOR_SKIPNEXT state pointing to the entry immediately
** before or after the deleted entry. In this case set bSkipnext to true. */
if( bPreserve ){
- if( !pPage->leaf
+ if( !pPage->leaf
|| (pPage->nFree+cellSizePtr(pPage,pCell)+2)>(int)(pBt->usableSize*2/3)
|| pPage->nCell==1 /* See dbfuzz001.test for a test case */
){
@@ -77691,7 +73533,7 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur, u8 flags){
** on the leaf node first. If the balance proceeds far enough up the
** tree that we can be sure that any problem in the internal node has
** been corrected, so be it. Otherwise, after balancing the leaf node,
- ** walk the cursor up the tree to the internal node and balance it as
+ ** walk the cursor up the tree to the internal node and balance it as
** well. */
rc = balance(pCur);
if( rc==SQLITE_OK && pCur->iPage>iCellDepth ){
@@ -77739,7 +73581,7 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur, u8 flags){
** BTREE_INTKEY|BTREE_LEAFDATA Used for SQL tables with rowid keys
** BTREE_ZERODATA Used for SQL indices
*/
-static int btreeCreateTable(Btree *p, int *piTable, int createTabFlags){
+static int btreeCreateTable(Btree *p, Pgno *piTable, int createTabFlags){
BtShared *pBt = p->pBt;
MemPage *pRoot;
Pgno pgnoRoot;
@@ -77772,6 +73614,9 @@ static int btreeCreateTable(Btree *p, int *piTable, int createTabFlags){
** created so far, so the new root-page is (meta[3]+1).
*/
sqlite3BtreeGetMeta(p, BTREE_LARGEST_ROOT_PAGE, &pgnoRoot);
+ if( pgnoRoot>btreePagecount(pBt) ){
+ return SQLITE_CORRUPT_BKPT;
+ }
pgnoRoot++;
/* The new root-page may not be allocated on a pointer-map page, or the
@@ -77781,8 +73626,7 @@ static int btreeCreateTable(Btree *p, int *piTable, int createTabFlags){
pgnoRoot==PENDING_BYTE_PAGE(pBt) ){
pgnoRoot++;
}
- assert( pgnoRoot>=3 || CORRUPT_DB );
- testcase( pgnoRoot<3 );
+ assert( pgnoRoot>=3 );
/* Allocate a page. The page that currently resides at pgnoRoot will
** be moved to the allocated page (unless the allocated page happens
@@ -77845,7 +73689,7 @@ static int btreeCreateTable(Btree *p, int *piTable, int createTabFlags){
}
}else{
pRoot = pPageMove;
- }
+ }
/* Update the pointer-map and meta-data with the new root-page number. */
ptrmapPut(pBt, pgnoRoot, PTRMAP_ROOTPAGE, 0, &rc);
@@ -77879,10 +73723,10 @@ static int btreeCreateTable(Btree *p, int *piTable, int createTabFlags){
zeroPage(pRoot, ptfFlags);
sqlite3PagerUnref(pRoot->pDbPage);
assert( (pBt->openFlags & BTREE_SINGLE)==0 || pgnoRoot==2 );
- *piTable = (int)pgnoRoot;
+ *piTable = pgnoRoot;
return SQLITE_OK;
}
-SQLITE_PRIVATE int sqlite3BtreeCreateTable(Btree *p, int *piTable, int flags){
+SQLITE_PRIVATE int sqlite3BtreeCreateTable(Btree *p, Pgno *piTable, int flags){
int rc;
sqlite3BtreeEnter(p);
rc = btreeCreateTable(p, piTable, flags);
@@ -77998,12 +73842,12 @@ SQLITE_PRIVATE int sqlite3BtreeClearTableOfCursor(BtCursor *pCur){
** cursors on the table.
**
** If AUTOVACUUM is enabled and the page at iTable is not the last
-** root page in the database file, then the last root page
+** root page in the database file, then the last root page
** in the database file is moved into the slot formerly occupied by
** iTable and that last slot formerly occupied by the last root page
** is added to the freelist instead of iTable. In this say, all
** root pages are kept at the beginning of the database file, which
-** is necessary for AUTOVACUUM to work right. *piMoved is set to the
+** is necessary for AUTOVACUUM to work right. *piMoved is set to the
** page number that used to be the last root page in the file before
** the move. If no page gets moved, *piMoved is set to 0.
** The last root page is recorded in meta[3] and the value of
@@ -78041,7 +73885,7 @@ static int btreeDropTable(Btree *p, Pgno iTable, int *piMoved){
if( iTable==maxRootPgno ){
/* If the table being dropped is the table with the largest root-page
- ** number in the database, put the root page on the free list.
+ ** number in the database, put the root page on the free list.
*/
freePage(pPage, &rc);
releasePage(pPage);
@@ -78050,7 +73894,7 @@ static int btreeDropTable(Btree *p, Pgno iTable, int *piMoved){
}
}else{
/* The table being dropped does not have the largest root-page
- ** number in the database. So move the page that does into the
+ ** number in the database. So move the page that does into the
** gap left by the deleted root-page.
*/
MemPage *pMove;
@@ -78092,7 +73936,7 @@ static int btreeDropTable(Btree *p, Pgno iTable, int *piMoved){
releasePage(pPage);
}
#endif
- return rc;
+ return rc;
}
SQLITE_PRIVATE int sqlite3BtreeDropTable(Btree *p, int iTable, int *piMoved){
int rc;
@@ -78111,7 +73955,7 @@ SQLITE_PRIVATE int sqlite3BtreeDropTable(Btree *p, int iTable, int *piMoved){
** is the number of free pages currently in the database. Meta[1]
** through meta[15] are available for use by higher layers. Meta[0]
** is read-only, the others are read/write.
-**
+**
** The schema layer numbers meta values differently. At the schema
** layer (and the SetCookie and ReadCookie opcodes) the number of
** free pages is not visible. So Cookie[0] is the same as Meta[1].
@@ -78128,7 +73972,7 @@ SQLITE_PRIVATE void sqlite3BtreeGetMeta(Btree *p, int idx, u32 *pMeta){
sqlite3BtreeEnter(p);
assert( p->inTrans>TRANS_NONE );
- assert( SQLITE_OK==querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK) );
+ assert( SQLITE_OK==querySharedCacheTableLock(p, SCHEMA_ROOT, READ_LOCK) );
assert( pBt->pPage1 );
assert( idx>=0 && idx<=15 );
@@ -78177,12 +74021,11 @@ SQLITE_PRIVATE int sqlite3BtreeUpdateMeta(Btree *p, int idx, u32 iMeta){
return rc;
}
-#ifndef SQLITE_OMIT_BTREECOUNT
/*
** The first argument, pCur, is a cursor opened on some b-tree. Count the
** number of entries in the b-tree and write the result to *pnEntry.
**
-** SQLITE_OK is returned if the operation is successfully executed.
+** SQLITE_OK is returned if the operation is successfully executed.
** Otherwise, if an error is encountered (i.e. an IO error or database
** corruption) an SQLite error code is returned.
*/
@@ -78197,13 +74040,13 @@ SQLITE_PRIVATE int sqlite3BtreeCount(sqlite3 *db, BtCursor *pCur, i64 *pnEntry){
}
/* Unless an error occurs, the following loop runs one iteration for each
- ** page in the B-Tree structure (not including overflow pages).
+ ** page in the B-Tree structure (not including overflow pages).
*/
- while( rc==SQLITE_OK && !db->u1.isInterrupted ){
+ while( rc==SQLITE_OK && !AtomicLoad(&db->u1.isInterrupted) ){
int iIdx; /* Index of child node in parent */
MemPage *pPage; /* Current page of the b-tree */
- /* If this is a leaf page or the tree is not an int-key tree, then
+ /* If this is a leaf page or the tree is not an int-key tree, then
** this page contains countable entries. Increment the entry counter
** accordingly.
*/
@@ -78212,7 +74055,7 @@ SQLITE_PRIVATE int sqlite3BtreeCount(sqlite3 *db, BtCursor *pCur, i64 *pnEntry){
nEntry += pPage->nCell;
}
- /* pPage is a leaf node. This loop navigates the cursor so that it
+ /* pPage is a leaf node. This loop navigates the cursor so that it
** points to the first interior cell that it points to the parent of
** the next page in the tree that has not yet been visited. The
** pCur->aiIdx[pCur->iPage] value is set to the index of the parent cell
@@ -78236,7 +74079,7 @@ SQLITE_PRIVATE int sqlite3BtreeCount(sqlite3 *db, BtCursor *pCur, i64 *pnEntry){
pPage = pCur->pPage;
}
- /* Descend to the child node of the cell that the cursor currently
+ /* Descend to the child node of the cell that the cursor currently
** points at. This is the right-child if (iIdx==pPage->nCell).
*/
iIdx = pCur->ix;
@@ -78250,7 +74093,6 @@ SQLITE_PRIVATE int sqlite3BtreeCount(sqlite3 *db, BtCursor *pCur, i64 *pnEntry){
/* An error has occurred. Return an error code. */
return rc;
}
-#endif
/*
** Return the pager associated with a BTree. This routine is used for
@@ -78283,7 +74125,7 @@ static void checkAppendMsg(
sqlite3_str_vappendf(&pCheck->errMsg, zFormat, ap);
va_end(ap);
if( pCheck->errMsg.accError==SQLITE_NOMEM ){
- pCheck->mallocFailed = 1;
+ pCheck->bOomFault = 1;
}
}
#endif /* SQLITE_OMIT_INTEGRITY_CHECK */
@@ -78325,14 +74167,14 @@ static int checkRef(IntegrityCk *pCheck, Pgno iPage){
checkAppendMsg(pCheck, "2nd reference to page %d", iPage);
return 1;
}
- if( pCheck->db->u1.isInterrupted ) return 1;
+ if( AtomicLoad(&pCheck->db->u1.isInterrupted) ) return 1;
setPageReferenced(pCheck, iPage);
return 0;
}
#ifndef SQLITE_OMIT_AUTOVACUUM
/*
-** Check that the entry in the pointer-map for page iChild maps to
+** Check that the entry in the pointer-map for page iChild maps to
** page iParent, pointer type ptrType. If not, append an error message
** to pCheck.
*/
@@ -78348,14 +74190,14 @@ static void checkPtrmap(
rc = ptrmapGet(pCheck->pBt, iChild, &ePtrmapType, &iPtrmapParent);
if( rc!=SQLITE_OK ){
- if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ) pCheck->mallocFailed = 1;
+ if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ) pCheck->bOomFault = 1;
checkAppendMsg(pCheck, "Failed to read ptrmap key=%d", iChild);
return;
}
if( ePtrmapType!=eType || iPtrmapParent!=iParent ){
checkAppendMsg(pCheck,
- "Bad ptr map entry key=%d expected=(%d,%d) got=(%d,%d)",
+ "Bad ptr map entry key=%d expected=(%d,%d) got=(%d,%d)",
iChild, eType, iParent, ePtrmapType, iPtrmapParent);
}
}
@@ -78368,7 +74210,7 @@ static void checkPtrmap(
static void checkList(
IntegrityCk *pCheck, /* Integrity checking context */
int isFreeList, /* True for a freelist. False for overflow page list */
- int iPage, /* Page number for first page in the list */
+ Pgno iPage, /* Page number for first page in the list */
u32 N /* Expected number of pages in the list */
){
int i;
@@ -78450,7 +74292,7 @@ static void checkList(
** property.
**
** This heap is used for cell overlap and coverage testing. Each u32
-** entry represents the span of a cell or freeblock on a btree page.
+** entry represents the span of a cell or freeblock on a btree page.
** The upper 16 bits are the index of the first byte of a range and the
** lower 16 bits are the index of the last byte of that range.
*/
@@ -78480,7 +74322,7 @@ static int btreeHeapPull(u32 *aHeap, u32 *pOut){
aHeap[j] = x;
i = j;
}
- return 1;
+ return 1;
}
#ifndef SQLITE_OMIT_INTEGRITY_CHECK
@@ -78488,7 +74330,7 @@ static int btreeHeapPull(u32 *aHeap, u32 *pOut){
** Do various sanity checks on a single page of a tree. Return
** the tree depth. Root pages return 0. Parents of root pages
** return 1, and so forth.
-**
+**
** These checks are done:
**
** 1. Make sure that cells and freeblocks do not overlap
@@ -78500,7 +74342,7 @@ static int btreeHeapPull(u32 *aHeap, u32 *pOut){
*/
static int checkTreePage(
IntegrityCk *pCheck, /* Context for the sanity check */
- int iPage, /* Page number of the page to check */
+ Pgno iPage, /* Page number of the page to check */
i64 *piMinKey, /* Write minimum integer primary key here */
i64 maxKey /* Error if integer primary key greater than this */
){
@@ -78536,9 +74378,9 @@ static int checkTreePage(
usableSize = pBt->usableSize;
if( iPage==0 ) return 0;
if( checkRef(pCheck, iPage) ) return 0;
- pCheck->zPfx = "Page %d: ";
+ pCheck->zPfx = "Page %u: ";
pCheck->v1 = iPage;
- if( (rc = btreeGetPage(pBt, (Pgno)iPage, &pPage, 0))!=0 ){
+ if( (rc = btreeGetPage(pBt, iPage, &pPage, 0))!=0 ){
checkAppendMsg(pCheck,
"unable to get the page. error code=%d", rc);
goto end_of_check;
@@ -78563,7 +74405,7 @@ static int checkTreePage(
hdr = pPage->hdrOffset;
/* Set up for cell analysis */
- pCheck->zPfx = "On tree page %d cell %d: ";
+ pCheck->zPfx = "On tree page %u cell %d: ";
contentOffset = get2byteNotZero(&data[hdr+5]);
assert( contentOffset<=usableSize ); /* Enforced by btreeInitPage() */
@@ -78583,7 +74425,7 @@ static int checkTreePage(
pgno = get4byte(&data[hdr+8]);
#ifndef SQLITE_OMIT_AUTOVACUUM
if( pBt->autoVacuum ){
- pCheck->zPfx = "On page %d at right child: ";
+ pCheck->zPfx = "On page %u at right child: ";
checkPtrmap(pCheck, pgno, PTRMAP_BTREE, iPage);
}
#endif
@@ -78686,7 +74528,7 @@ static int checkTreePage(
**
** EVIDENCE-OF: R-20690-50594 The second field of the b-tree page header
** is the offset of the first freeblock, or zero if there are no
- ** freeblocks on the page.
+ ** freeblocks on the page.
*/
i = get2byte(&data[hdr+1]);
while( i>0 ){
@@ -78706,13 +74548,13 @@ static int checkTreePage(
assert( (u32)j<=usableSize-4 ); /* Enforced by btreeComputeFreeSpace() */
i = j;
}
- /* Analyze the min-heap looking for overlap between cells and/or
+ /* Analyze the min-heap looking for overlap between cells and/or
** freeblocks, and counting the number of untracked bytes in nFrag.
- **
+ **
** Each min-heap entry is of the form: (start_address<<16)|end_address.
** There is an implied first entry the covers the page header, the cell
** pointer index, and the gap between the cell pointer index and the start
- ** of cell content.
+ ** of cell content.
**
** The loop below pulls entries from the min-heap in order and compares
** the start_address against the previous end_address. If there is an
@@ -78724,7 +74566,7 @@ static int checkTreePage(
while( btreeHeapPull(heap,&x) ){
if( (prev&0xffff)>=(x>>16) ){
checkAppendMsg(pCheck,
- "Multiple uses for byte %u of page %d", x>>16, iPage);
+ "Multiple uses for byte %u of page %u", x>>16, iPage);
break;
}else{
nFrag += (x>>16) - (prev&0xffff) - 1;
@@ -78739,7 +74581,7 @@ static int checkTreePage(
*/
if( heap[0]==0 && nFrag!=data[hdr+7] ){
checkAppendMsg(pCheck,
- "Fragmentation of %d bytes reported as %d on page %d",
+ "Fragmentation of %d bytes reported as %d on page %u",
nFrag, data[hdr+7], iPage);
}
}
@@ -78767,11 +74609,20 @@ end_of_check:
** allocation errors, an error message held in memory obtained from
** malloc is returned if *pnErr is non-zero. If *pnErr==0 then NULL is
** returned. If a memory allocation error occurs, NULL is returned.
+**
+** If the first entry in aRoot[] is 0, that indicates that the list of
+** root pages is incomplete. This is a "partial integrity-check". This
+** happens when performing an integrity check on a single table. The
+** zero is skipped, of course. But in addition, the freelist checks
+** and the checks to make sure every page is referenced are also skipped,
+** since obviously it is not possible to know which pages are covered by
+** the unverified btrees. Except, if aRoot[1] is 1, then the freelist
+** checks are still performed.
*/
SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(
sqlite3 *db, /* Database connection that is running the check */
Btree *p, /* The btree to be checked */
- int *aRoot, /* An array of root pages numbers for individual trees */
+ Pgno *aRoot, /* An array of root pages numbers for individual trees */
int nRoot, /* Number of entries in aRoot[] */
int mxErr, /* Stop reporting errors after this many */
int *pnErr /* Write number of errors seen to this variable */
@@ -78781,7 +74632,17 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(
BtShared *pBt = p->pBt;
u64 savedDbFlags = pBt->db->flags;
char zErr[100];
+ int bPartial = 0; /* True if not checking all btrees */
+ int bCkFreelist = 1; /* True to scan the freelist */
VVA_ONLY( int nRef );
+ assert( nRoot>0 );
+
+ /* aRoot[0]==0 means this is a partial check */
+ if( aRoot[0]==0 ){
+ assert( nRoot>1 );
+ bPartial = 1;
+ if( aRoot[1]!=1 ) bCkFreelist = 0;
+ }
sqlite3BtreeEnter(p);
assert( p->inTrans>TRANS_NONE && pBt->inTransaction>TRANS_NONE );
@@ -78793,7 +74654,7 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(
sCheck.nPage = btreePagecount(sCheck.pBt);
sCheck.mxErr = mxErr;
sCheck.nErr = 0;
- sCheck.mallocFailed = 0;
+ sCheck.bOomFault = 0;
sCheck.zPfx = 0;
sCheck.v1 = 0;
sCheck.v2 = 0;
@@ -78807,12 +74668,12 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(
sCheck.aPgRef = sqlite3MallocZero((sCheck.nPage / 8)+ 1);
if( !sCheck.aPgRef ){
- sCheck.mallocFailed = 1;
+ sCheck.bOomFault = 1;
goto integrity_ck_cleanup;
}
sCheck.heap = (u32*)sqlite3PageMalloc( pBt->pageSize );
if( sCheck.heap==0 ){
- sCheck.mallocFailed = 1;
+ sCheck.bOomFault = 1;
goto integrity_ck_cleanup;
}
@@ -78821,29 +74682,33 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(
/* Check the integrity of the freelist
*/
- sCheck.zPfx = "Main freelist: ";
- checkList(&sCheck, 1, get4byte(&pBt->pPage1->aData[32]),
- get4byte(&pBt->pPage1->aData[36]));
- sCheck.zPfx = 0;
+ if( bCkFreelist ){
+ sCheck.zPfx = "Main freelist: ";
+ checkList(&sCheck, 1, get4byte(&pBt->pPage1->aData[32]),
+ get4byte(&pBt->pPage1->aData[36]));
+ sCheck.zPfx = 0;
+ }
/* Check all the tables.
*/
#ifndef SQLITE_OMIT_AUTOVACUUM
- if( pBt->autoVacuum ){
- int mx = 0;
- int mxInHdr;
- for(i=0; (int)ipPage1->aData[52]);
- if( mx!=mxInHdr ){
+ if( !bPartial ){
+ if( pBt->autoVacuum ){
+ Pgno mx = 0;
+ Pgno mxInHdr;
+ for(i=0; (int)ipPage1->aData[52]);
+ if( mx!=mxInHdr ){
+ checkAppendMsg(&sCheck,
+ "max rootpage (%d) disagrees with header (%d)",
+ mx, mxInHdr
+ );
+ }
+ }else if( get4byte(&pBt->pPage1->aData[64])!=0 ){
checkAppendMsg(&sCheck,
- "max rootpage (%d) disagrees with header (%d)",
- mx, mxInHdr
+ "incremental_vacuum enabled with a max rootpage of zero"
);
}
- }else if( get4byte(&pBt->pPage1->aData[64])!=0 ){
- checkAppendMsg(&sCheck,
- "incremental_vacuum enabled with a max rootpage of zero"
- );
}
#endif
testcase( pBt->db->flags & SQLITE_CellSizeCk );
@@ -78852,7 +74717,7 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(
i64 notUsed;
if( aRoot[i]==0 ) continue;
#ifndef SQLITE_OMIT_AUTOVACUUM
- if( pBt->autoVacuum && aRoot[i]>1 ){
+ if( pBt->autoVacuum && aRoot[i]>1 && !bPartial ){
checkPtrmap(&sCheck, aRoot[i], PTRMAP_ROOTPAGE, 0);
}
#endif
@@ -78862,24 +74727,26 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(
/* Make sure every page in the file is referenced
*/
- for(i=1; i<=sCheck.nPage && sCheck.mxErr; i++){
+ if( !bPartial ){
+ for(i=1; i<=sCheck.nPage && sCheck.mxErr; i++){
#ifdef SQLITE_OMIT_AUTOVACUUM
- if( getPageReferenced(&sCheck, i)==0 ){
- checkAppendMsg(&sCheck, "Page %d is never used", i);
- }
+ if( getPageReferenced(&sCheck, i)==0 ){
+ checkAppendMsg(&sCheck, "Page %d is never used", i);
+ }
#else
- /* If the database supports auto-vacuum, make sure no tables contain
- ** references to pointer-map pages.
- */
- if( getPageReferenced(&sCheck, i)==0 &&
- (PTRMAP_PAGENO(pBt, i)!=i || !pBt->autoVacuum) ){
- checkAppendMsg(&sCheck, "Page %d is never used", i);
- }
- if( getPageReferenced(&sCheck, i)!=0 &&
- (PTRMAP_PAGENO(pBt, i)==i && pBt->autoVacuum) ){
- checkAppendMsg(&sCheck, "Pointer map page %d is referenced", i);
- }
+ /* If the database supports auto-vacuum, make sure no tables contain
+ ** references to pointer-map pages.
+ */
+ if( getPageReferenced(&sCheck, i)==0 &&
+ (PTRMAP_PAGENO(pBt, i)!=i || !pBt->autoVacuum) ){
+ checkAppendMsg(&sCheck, "Page %d is never used", i);
+ }
+ if( getPageReferenced(&sCheck, i)!=0 &&
+ (PTRMAP_PAGENO(pBt, i)==i && pBt->autoVacuum) ){
+ checkAppendMsg(&sCheck, "Pointer map page %d is referenced", i);
+ }
#endif
+ }
}
/* Clean up and report errors.
@@ -78887,7 +74754,7 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(
integrity_ck_cleanup:
sqlite3PageFree(sCheck.heap);
sqlite3_free(sCheck.aPgRef);
- if( sCheck.mallocFailed ){
+ if( sCheck.bOomFault ){
sqlite3_str_reset(&sCheck.errMsg);
sCheck.nErr++;
}
@@ -78937,7 +74804,7 @@ SQLITE_PRIVATE int sqlite3BtreeIsInTrans(Btree *p){
/*
** Run a checkpoint on the Btree passed as the first argument.
**
-** Return SQLITE_LOCKED if this or any other connection has an open
+** Return SQLITE_LOCKED if this or any other connection has an open
** transaction on the shared-cache the argument Btree is connected to.
**
** Parameter eMode is one of SQLITE_CHECKPOINT_PASSIVE, FULL or RESTART.
@@ -78976,20 +74843,20 @@ SQLITE_PRIVATE int sqlite3BtreeIsInBackup(Btree *p){
/*
** This function returns a pointer to a blob of memory associated with
** a single shared-btree. The memory is used by client code for its own
-** purposes (for example, to store a high-level schema associated with
+** purposes (for example, to store a high-level schema associated with
** the shared-btree). The btree layer manages reference counting issues.
**
** The first time this is called on a shared-btree, nBytes bytes of memory
-** are allocated, zeroed, and returned to the caller. For each subsequent
+** are allocated, zeroed, and returned to the caller. For each subsequent
** call the nBytes parameter is ignored and a pointer to the same blob
-** of memory returned.
+** of memory returned.
**
** If the nBytes parameter is 0 and the blob of memory has not yet been
** allocated, a null pointer is returned. If the blob has already been
** allocated, it is returned as normal.
**
-** Just before the shared-btree is closed, the function passed as the
-** xFree argument when the memory allocation was made is invoked on the
+** Just before the shared-btree is closed, the function passed as the
+** xFree argument when the memory allocation was made is invoked on the
** blob of allocated memory. The xFree function should not call sqlite3_free()
** on the memory, the btree layer does that.
*/
@@ -79005,15 +74872,15 @@ SQLITE_PRIVATE void *sqlite3BtreeSchema(Btree *p, int nBytes, void(*xFree)(void
}
/*
-** Return SQLITE_LOCKED_SHAREDCACHE if another user of the same shared
-** btree as the argument handle holds an exclusive lock on the
-** sqlite_master table. Otherwise SQLITE_OK.
+** Return SQLITE_LOCKED_SHAREDCACHE if another user of the same shared
+** btree as the argument handle holds an exclusive lock on the
+** sqlite_schema table. Otherwise SQLITE_OK.
*/
SQLITE_PRIVATE int sqlite3BtreeSchemaLocked(Btree *p){
int rc;
assert( sqlite3_mutex_held(p->db->mutex) );
sqlite3BtreeEnter(p);
- rc = querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK);
+ rc = querySharedCacheTableLock(p, SCHEMA_ROOT, READ_LOCK);
assert( rc==SQLITE_OK || rc==SQLITE_LOCKED_SHAREDCACHE );
sqlite3BtreeLeave(p);
return rc;
@@ -79047,11 +74914,11 @@ SQLITE_PRIVATE int sqlite3BtreeLockTable(Btree *p, int iTab, u8 isWriteLock){
#ifndef SQLITE_OMIT_INCRBLOB
/*
-** Argument pCsr must be a cursor opened for writing on an
-** INTKEY table currently pointing at a valid table entry.
+** Argument pCsr must be a cursor opened for writing on an
+** INTKEY table currently pointing at a valid table entry.
** This function modifies the data stored as part of that entry.
**
-** Only the data content may only be modified, it is not possible to
+** Only the data content may only be modified, it is not possible to
** change the length of the data stored. If this function is called with
** parameters that attempt to write past the end of the existing data,
** no modifications are made and SQLITE_CORRUPT is returned.
@@ -79082,7 +74949,7 @@ SQLITE_PRIVATE int sqlite3BtreePutData(BtCursor *pCsr, u32 offset, u32 amt, void
VVA_ONLY(rc =) saveAllCursors(pCsr->pBt, pCsr->pgnoRoot, pCsr);
assert( rc==SQLITE_OK );
- /* Check some assumptions:
+ /* Check some assumptions:
** (a) the cursor is open for writing,
** (b) there is a read/write transaction open,
** (c) the connection holds a write-lock on the table (if required),
@@ -79101,7 +74968,7 @@ SQLITE_PRIVATE int sqlite3BtreePutData(BtCursor *pCsr, u32 offset, u32 amt, void
return accessPayload(pCsr, offset, amt, (unsigned char *)z, 1);
}
-/*
+/*
** Mark this cursor as an incremental blob cursor.
*/
SQLITE_PRIVATE void sqlite3BtreeIncrblobCursor(BtCursor *pCur){
@@ -79111,14 +74978,14 @@ SQLITE_PRIVATE void sqlite3BtreeIncrblobCursor(BtCursor *pCur){
#endif
/*
-** Set both the "read version" (single byte at byte offset 18) and
+** Set both the "read version" (single byte at byte offset 18) and
** "write version" (single byte at byte offset 19) fields in the database
** header to iVersion.
*/
SQLITE_PRIVATE int sqlite3BtreeSetVersion(Btree *pBtree, int iVersion){
BtShared *pBt = pBtree->pBt;
int rc; /* Return code */
-
+
assert( iVersion==1 || iVersion==2 );
/* If setting the version fields to 1, do not automatically open the
@@ -79176,7 +75043,7 @@ SQLITE_PRIVATE int sqlite3BtreeSharable(Btree *p){
/*
** Return the number of connections to the BtShared object accessed by
-** the Btree handle passed as the only argument. For private caches
+** the Btree handle passed as the only argument. For private caches
** this is always 1. For shared caches it may be 1 or greater.
*/
SQLITE_PRIVATE int sqlite3BtreeConnectionCount(Btree *p){
@@ -79198,7 +75065,7 @@ SQLITE_PRIVATE int sqlite3BtreeConnectionCount(Btree *p){
** May you share freely, never taking more than you give.
**
*************************************************************************
-** This file contains the implementation of the sqlite3_backup_XXX()
+** This file contains the implementation of the sqlite3_backup_XXX()
** API functions and the related features.
*/
/* #include "sqliteInt.h" */
@@ -79235,15 +75102,15 @@ struct sqlite3_backup {
** Once it has been created using backup_init(), a single sqlite3_backup
** structure may be accessed via two groups of thread-safe entry points:
**
-** * Via the sqlite3_backup_XXX() API function backup_step() and
+** * Via the sqlite3_backup_XXX() API function backup_step() and
** backup_finish(). Both these functions obtain the source database
-** handle mutex and the mutex associated with the source BtShared
+** handle mutex and the mutex associated with the source BtShared
** structure, in that order.
**
** * Via the BackupUpdate() and BackupRestart() functions, which are
** invoked by the pager layer to report various state changes in
** the page cache associated with the source database. The mutex
-** associated with the source database BtShared structure will always
+** associated with the source database BtShared structure will always
** be held when either of these functions are invoked.
**
** The other sqlite3_backup_XXX() API functions, backup_remaining() and
@@ -79264,8 +75131,8 @@ struct sqlite3_backup {
** in connection handle pDb. If such a database cannot be found, return
** a NULL pointer and write an error message to pErrorDb.
**
-** If the "temp" database is requested, it may need to be opened by this
-** function. If an error occurs while doing so, return 0 and write an
+** If the "temp" database is requested, it may need to be opened by this
+** function. If an error occurs while doing so, return 0 and write an
** error message to pErrorDb.
*/
static Btree *findBtree(sqlite3 *pErrorDb, sqlite3 *pDb, const char *zDb){
@@ -79301,14 +75168,14 @@ static Btree *findBtree(sqlite3 *pErrorDb, sqlite3 *pDb, const char *zDb){
*/
static int setDestPgsz(sqlite3_backup *p){
int rc;
- rc = sqlite3BtreeSetPageSize(p->pDest,sqlite3BtreeGetPageSize(p->pSrc),-1,0);
+ rc = sqlite3BtreeSetPageSize(p->pDest,sqlite3BtreeGetPageSize(p->pSrc),0,0);
return rc;
}
/*
** Check that there is no open read-transaction on the b-tree passed as the
** second argument. If there is not, return SQLITE_OK. Otherwise, if there
-** is an open read-transaction, return SQLITE_ERROR and leave an error
+** is an open read-transaction, return SQLITE_ERROR and leave an error
** message in database handle db.
*/
static int checkReadTransaction(sqlite3 *db, Btree *p){
@@ -79378,13 +75245,13 @@ SQLITE_API sqlite3_backup *sqlite3_backup_init(
p->iNext = 1;
p->isAttached = 0;
- if( 0==p->pSrc || 0==p->pDest
- || checkReadTransaction(pDestDb, p->pDest)!=SQLITE_OK
+ if( 0==p->pSrc || 0==p->pDest
+ || checkReadTransaction(pDestDb, p->pDest)!=SQLITE_OK
){
/* One (or both) of the named databases did not exist or an OOM
** error was hit. Or there is a transaction open on the destination
- ** database. The error has already been written into the pDestDb
- ** handle. All that is left to do here is free the sqlite3_backup
+ ** database. The error has already been written into the pDestDb
+ ** handle. All that is left to do here is free the sqlite3_backup
** structure. */
sqlite3_free(p);
p = 0;
@@ -79400,7 +75267,7 @@ SQLITE_API sqlite3_backup *sqlite3_backup_init(
}
/*
-** Argument rc is an SQLite error code. Return true if this error is
+** Argument rc is an SQLite error code. Return true if this error is
** considered fatal if encountered during a backup operation. All errors
** are considered fatal except for SQLITE_BUSY and SQLITE_LOCKED.
*/
@@ -79409,8 +75276,8 @@ static int isFatalError(int rc){
}
/*
-** Parameter zSrcData points to a buffer containing the data for
-** page iSrcPg from the source database. Copy this data into the
+** Parameter zSrcData points to a buffer containing the data for
+** page iSrcPg from the source database. Copy this data into the
** destination database.
*/
static int backupOnePage(
@@ -79424,13 +75291,6 @@ static int backupOnePage(
int nDestPgsz = sqlite3BtreeGetPageSize(p->pDest);
const int nCopy = MIN(nSrcPgsz, nDestPgsz);
const i64 iEnd = (i64)iSrcPg*(i64)nSrcPgsz;
-#ifdef SQLITE_HAS_CODEC
- /* Use BtreeGetReserveNoMutex() for the source b-tree, as although it is
- ** guaranteed that the shared-mutex is held by this thread, handle
- ** p->pSrc may not actually be the owner. */
- int nSrcReserve = sqlite3BtreeGetReserveNoMutex(p->pSrc);
- int nDestReserve = sqlite3BtreeGetOptimalReserve(p->pDest);
-#endif
int rc = SQLITE_OK;
i64 iOff;
@@ -79441,33 +75301,13 @@ static int backupOnePage(
assert( zSrcData );
/* Catch the case where the destination is an in-memory database and the
- ** page sizes of the source and destination differ.
+ ** page sizes of the source and destination differ.
*/
if( nSrcPgsz!=nDestPgsz && sqlite3PagerIsMemdb(pDestPager) ){
rc = SQLITE_READONLY;
}
-#ifdef SQLITE_HAS_CODEC
- /* Backup is not possible if the page size of the destination is changing
- ** and a codec is in use.
- */
- if( nSrcPgsz!=nDestPgsz && sqlite3PagerGetCodec(pDestPager)!=0 ){
- rc = SQLITE_READONLY;
- }
-
- /* Backup is not possible if the number of bytes of reserve space differ
- ** between source and destination. If there is a difference, try to
- ** fix the destination to agree with the source. If that is not possible,
- ** then the backup cannot proceed.
- */
- if( nSrcReserve!=nDestReserve ){
- u32 newPgsz = nSrcPgsz;
- rc = sqlite3PagerSetPagesize(pDestPager, &newPgsz, nSrcReserve);
- if( rc==SQLITE_OK && newPgsz!=(u32)nSrcPgsz ) rc = SQLITE_READONLY;
- }
-#endif
-
- /* This loop runs once for each destination page spanned by the source
+ /* This loop runs once for each destination page spanned by the source
** page. For each iteration, variable iOff is set to the byte offset
** of the destination page.
*/
@@ -79486,7 +75326,7 @@ static int backupOnePage(
** Then clear the Btree layer MemPage.isInit flag. Both this module
** and the pager code use this trick (clearing the first byte
** of the page 'extra' space to invalidate the Btree layers
- ** cached parse of the page). MemPage.isInit is marked
+ ** cached parse of the page). MemPage.isInit is marked
** "MUST BE FIRST" for this purpose.
*/
memcpy(zOut, zIn, nCopy);
@@ -79506,7 +75346,7 @@ static int backupOnePage(
** exactly iSize bytes. If pFile is not larger than iSize bytes, then
** this function is a no-op.
**
-** Return SQLITE_OK if everything is successful, or an SQLite error
+** Return SQLITE_OK if everything is successful, or an SQLite error
** code if an error occurs.
*/
static int backupTruncateFile(sqlite3_file *pFile, i64 iSize){
@@ -79588,7 +75428,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){
/* Lock the destination database, if it is not locked already. */
if( SQLITE_OK==rc && p->bDestLocked==0
&& SQLITE_OK==(rc = sqlite3BtreeBeginTrans(p->pDest, 2,
- (int*)&p->iDestSchema))
+ (int*)&p->iDestSchema))
){
p->bDestLocked = 1;
}
@@ -79601,7 +75441,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){
if( SQLITE_OK==rc && destMode==PAGER_JOURNALMODE_WAL && pgszSrc!=pgszDest ){
rc = SQLITE_READONLY;
}
-
+
/* Now that there is a read-lock on the source database, query the
** source pager for the number of pages in the database.
*/
@@ -79628,7 +75468,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){
attachBackupObject(p);
}
}
-
+
/* Update the schema version field in the destination database. This
** is to make sure that the schema-version really does change in
** the case where the source and destination databases have the
@@ -79654,12 +75494,12 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){
int nDestTruncate;
/* Set nDestTruncate to the final number of pages in the destination
** database. The complication here is that the destination page
- ** size may be different to the source page size.
+ ** size may be different to the source page size.
**
- ** If the source page size is smaller than the destination page size,
+ ** If the source page size is smaller than the destination page size,
** round up. In this case the call to sqlite3OsTruncate() below will
** fix the size of the file. However it is important to call
- ** sqlite3PagerTruncateImage() here so that any pages in the
+ ** sqlite3PagerTruncateImage() here so that any pages in the
** destination file that lie beyond the nDestTruncate page mark are
** journalled by PagerCommitPhaseOne() before they are destroyed
** by the file truncation.
@@ -79683,7 +75523,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){
**
** * The destination may need to be truncated, and
**
- ** * Data stored on the pages immediately following the
+ ** * Data stored on the pages immediately following the
** pending-byte page in the source database may need to be
** copied into the destination database.
*/
@@ -79695,7 +75535,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){
i64 iEnd;
assert( pFile );
- assert( nDestTruncate==0
+ assert( nDestTruncate==0
|| (i64)nDestTruncate*(i64)pgszDest >= iSize || (
nDestTruncate==(int)(PENDING_BYTE_PAGE(p->pDest->pBt)-1)
&& iSize>=PENDING_BYTE && iSize<=PENDING_BYTE+pgszDest
@@ -79705,7 +75545,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){
** database has been stored in the journal for pDestPager and the
** journal synced to disk. So at this point we may safely modify
** the database file in any way, knowing that if a power failure
- ** occurs, the original database will be reconstructed from the
+ ** occurs, the original database will be reconstructed from the
** journal file. */
sqlite3PagerPagecount(pDestPager, &nDstPage);
for(iPg=nDestTruncate; rc==SQLITE_OK && iPg<=(Pgno)nDstPage; iPg++){
@@ -79725,8 +75565,8 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){
/* Write the extra pages and truncate the database file as required */
iEnd = MIN(PENDING_BYTE + pgszDest, iSize);
for(
- iOff=PENDING_BYTE+pgszSrc;
- rc==SQLITE_OK && iOffpDest, 0))
@@ -79759,7 +75599,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){
}
}
}
-
+
/* If bCloseTrans is true, then this function opened a read transaction
** on the source database. Close the read transaction here. There is
** no need to check the return values of the btree methods here, as
@@ -79771,7 +75611,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){
TESTONLY( rc2 |= ) sqlite3BtreeCommitPhaseTwo(p->pSrc, 0);
assert( rc2==SQLITE_OK );
}
-
+
if( rc==SQLITE_IOERR_NOMEM ){
rc = SQLITE_NOMEM_BKPT;
}
@@ -79853,7 +75693,7 @@ SQLITE_API int sqlite3_backup_remaining(sqlite3_backup *p){
}
/*
-** Return the total number of pages in the source database as of the most
+** Return the total number of pages in the source database as of the most
** recent call to sqlite3_backup_step().
*/
SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p){
@@ -79868,7 +75708,7 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p){
/*
** This function is called after the contents of page iPage of the
-** source database have been modified. If page iPage has already been
+** source database have been modified. If page iPage has already been
** copied into the destination database, then the data written to the
** destination is now invalidated. The destination copy of iPage needs
** to be updated with the new data before the backup operation is
@@ -79911,7 +75751,7 @@ SQLITE_PRIVATE void sqlite3BackupUpdate(sqlite3_backup *pBackup, Pgno iPage, con
** Restart the backup process. This is called when the pager layer
** detects that the database has been modified by an external database
** connection. In this case there is no way of knowing which of the
-** pages that have been copied into the destination database are still
+** pages that have been copied into the destination database are still
** valid and which are not, so the entire process needs to be restarted.
**
** It is assumed that the mutex associated with the BtShared object
@@ -79931,8 +75771,8 @@ SQLITE_PRIVATE void sqlite3BackupRestart(sqlite3_backup *pBackup){
** Copy the complete content of pBtFrom into pBtTo. A transaction
** must be active for both files.
**
-** The size of file pTo may be reduced by this operation. If anything
-** goes wrong, the transaction on pTo is rolled back. If successful, the
+** The size of file pTo may be reduced by this operation. If anything
+** goes wrong, the transaction on pTo is rolled back. If successful, the
** transaction is committed before returning.
*/
SQLITE_PRIVATE int sqlite3BtreeCopyFile(Btree *pTo, Btree *pFrom){
@@ -79962,15 +75802,11 @@ SQLITE_PRIVATE int sqlite3BtreeCopyFile(Btree *pTo, Btree *pFrom){
b.pDest = pTo;
b.iNext = 1;
-#ifdef SQLITE_HAS_CODEC
- sqlite3PagerAlignReserve(sqlite3BtreePager(pTo), sqlite3BtreePager(pFrom));
-#endif
-
/* 0x7FFFFFFF is the hard limit for the number of pages in a database
** file. By passing this as the number of pages to copy to
- ** sqlite3_backup_step(), we can guarantee that the copy finishes
+ ** sqlite3_backup_step(), we can guarantee that the copy finishes
** within a single call (unless an error occurs). The assert() statement
- ** checks this assumption - (p->rc) should be set to either SQLITE_DONE
+ ** checks this assumption - (p->rc) should be set to either SQLITE_DONE
** or an error code. */
sqlite3_backup_step(&b, 0x7FFFFFFF);
assert( b.rc!=SQLITE_OK );
@@ -80025,7 +75861,7 @@ copy_finished:
** this: assert( sqlite3VdbeCheckMemInvariants(pMem) );
*/
SQLITE_PRIVATE int sqlite3VdbeCheckMemInvariants(Mem *p){
- /* If MEM_Dyn is set then Mem.xDel!=0.
+ /* If MEM_Dyn is set then Mem.xDel!=0.
** Mem.xDel might not be initialized if MEM_Dyn is clear.
*/
assert( (p->flags & MEM_Dyn)==0 || p->xDel!=0 );
@@ -80080,7 +75916,7 @@ SQLITE_PRIVATE int sqlite3VdbeCheckMemInvariants(Mem *p){
** (4) A static string or blob
*/
if( (p->flags & (MEM_Str|MEM_Blob)) && p->n>0 ){
- assert(
+ assert(
((p->szMalloc>0 && p->z==p->zMalloc)? 1 : 0) +
((p->flags&MEM_Dyn)!=0 ? 1 : 0) +
((p->flags&MEM_Ephem)!=0 ? 1 : 0) +
@@ -80098,16 +75934,25 @@ SQLITE_PRIVATE int sqlite3VdbeCheckMemInvariants(Mem *p){
static void vdbeMemRenderNum(int sz, char *zBuf, Mem *p){
StrAccum acc;
assert( p->flags & (MEM_Int|MEM_Real|MEM_IntReal) );
- sqlite3StrAccumInit(&acc, 0, zBuf, sz, 0);
+ assert( sz>22 );
if( p->flags & MEM_Int ){
- sqlite3_str_appendf(&acc, "%lld", p->u.i);
- }else if( p->flags & MEM_IntReal ){
- sqlite3_str_appendf(&acc, "%!.15g", (double)p->u.i);
+#if GCC_VERSION>=7000000
+ /* Work-around for GCC bug
+ ** https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96270 */
+ i64 x;
+ assert( (p->flags&MEM_Int)*2==sizeof(x) );
+ memcpy(&x, (char*)&p->u, (p->flags&MEM_Int)*2);
+ sqlite3Int64ToText(x, zBuf);
+#else
+ sqlite3Int64ToText(p->u.i, zBuf);
+#endif
}else{
- sqlite3_str_appendf(&acc, "%!.15g", p->u.r);
+ sqlite3StrAccumInit(&acc, 0, zBuf, sz, 0);
+ sqlite3_str_appendf(&acc, "%!.15g",
+ (p->flags & MEM_IntReal)!=0 ? (double)p->u.i : p->u.r);
+ assert( acc.zText==zBuf && acc.mxAlloc<=0 );
+ zBuf[acc.nChar] = 0; /* Fast version of sqlite3StrAccumFinish(&acc) */
}
- assert( acc.zText==zBuf && acc.mxAlloc<=0 );
- zBuf[acc.nChar] = 0; /* Fast version of sqlite3StrAccumFinish(&acc) */
}
#ifdef SQLITE_DEBUG
@@ -80448,7 +76293,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem *pMem, FuncDef *pFunc){
** This routine calls the xValue method for that function and stores
** the results in memory cell pMem.
**
-** SQLITE_ERROR is returned if xValue() reports an error. SQLITE_OK
+** SQLITE_ERROR is returned if xValue() reports an error. SQLITE_OK
** otherwise.
*/
#ifndef SQLITE_OMIT_WINDOWFUNC
@@ -80584,8 +76429,7 @@ SQLITE_PRIVATE i64 sqlite3VdbeIntValue(Mem *pMem){
return pMem->u.i;
}else if( flags & MEM_Real ){
return doubleToInt64(pMem->u.r);
- }else if( flags & (MEM_Str|MEM_Blob) ){
- assert( pMem->z || pMem->n==0 );
+ }else if( (flags & (MEM_Str|MEM_Blob))!=0 && pMem->z!=0 ){
return memIntValue(pMem);
}else{
return 0;
@@ -80622,7 +76466,7 @@ SQLITE_PRIVATE double sqlite3VdbeRealValue(Mem *pMem){
/*
** Return 1 if pMem represents true, and return 0 if pMem represents false.
-** Return the value ifNull if pMem is NULL.
+** Return the value ifNull if pMem is NULL.
*/
SQLITE_PRIVATE int sqlite3VdbeBooleanValue(Mem *pMem, int ifNull){
testcase( pMem->flags & MEM_IntReal );
@@ -80742,8 +76586,8 @@ SQLITE_PRIVATE int sqlite3VdbeMemNumerify(Mem *pMem){
** affinity even if that results in loss of data. This routine is
** used (for example) to implement the SQL "cast()" operator.
*/
-SQLITE_PRIVATE void sqlite3VdbeMemCast(Mem *pMem, u8 aff, u8 encoding){
- if( pMem->flags & MEM_Null ) return;
+SQLITE_PRIVATE int sqlite3VdbeMemCast(Mem *pMem, u8 aff, u8 encoding){
+ if( pMem->flags & MEM_Null ) return SQLITE_OK;
switch( aff ){
case SQLITE_AFF_BLOB: { /* Really a cast to BLOB */
if( (pMem->flags & MEM_Blob)==0 ){
@@ -80774,9 +76618,10 @@ SQLITE_PRIVATE void sqlite3VdbeMemCast(Mem *pMem, u8 aff, u8 encoding){
sqlite3ValueApplyAffinity(pMem, SQLITE_AFF_TEXT, encoding);
assert( pMem->flags & MEM_Str || pMem->db->mallocFailed );
pMem->flags &= ~(MEM_Int|MEM_Real|MEM_IntReal|MEM_Blob|MEM_Zero);
- break;
+ return sqlite3VdbeChangeEncoding(pMem, encoding);
}
}
+ return SQLITE_OK;
}
/*
@@ -80812,7 +76657,7 @@ SQLITE_PRIVATE void sqlite3VdbeMemSetNull(Mem *pMem){
}
}
SQLITE_PRIVATE void sqlite3ValueSetNull(sqlite3_value *p){
- sqlite3VdbeMemSetNull((Mem*)p);
+ sqlite3VdbeMemSetNull((Mem*)p);
}
/*
@@ -80933,7 +76778,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemTooBig(Mem *p){
}
return n>p->db->aLimit[SQLITE_LIMIT_LENGTH];
}
- return 0;
+ return 0;
}
#ifdef SQLITE_DEBUG
@@ -80942,26 +76787,28 @@ SQLITE_PRIVATE int sqlite3VdbeMemTooBig(Mem *p){
** its link to a shallow copy and by marking any current shallow
** copies of this cell as invalid.
**
-** This is used for testing and debugging only - to make sure shallow
-** copies are not misused.
+** This is used for testing and debugging only - to help ensure that shallow
+** copies (created by OP_SCopy) are not misused.
*/
SQLITE_PRIVATE void sqlite3VdbeMemAboutToChange(Vdbe *pVdbe, Mem *pMem){
int i;
Mem *pX;
- for(i=0, pX=pVdbe->aMem; inMem; i++, pX++){
+ for(i=1, pX=pVdbe->aMem+1; inMem; i++, pX++){
if( pX->pScopyFrom==pMem ){
- /* If pX is marked as a shallow copy of pMem, then verify that
+ u16 mFlags;
+ if( pVdbe->db->flags & SQLITE_VdbeTrace ){
+ sqlite3DebugPrintf("Invalidate R[%d] due to change in R[%d]\n",
+ (int)(pX - pVdbe->aMem), (int)(pMem - pVdbe->aMem));
+ }
+ /* If pX is marked as a shallow copy of pMem, then try to verify that
** no significant changes have been made to pX since the OP_SCopy.
** A significant change would indicated a missed call to this
** function for pX. Minor changes, such as adding or removing a
** dual type, are allowed, as long as the underlying value is the
** same. */
- u16 mFlags = pMem->flags & pX->flags & pX->mScopyFlags;
+ mFlags = pMem->flags & pX->flags & pX->mScopyFlags;
assert( (mFlags&(MEM_Int|MEM_IntReal))==0 || pMem->u.i==pX->u.i );
- assert( (mFlags&MEM_Real)==0 || pMem->u.r==pX->u.r );
- assert( (mFlags&MEM_Str)==0 || (pMem->n==pX->n && pMem->z==pX->z) );
- assert( (mFlags&MEM_Blob)==0 || sqlite3BlobCompare(pMem,pX)==0 );
-
+
/* pMem is the register that is changing. But also mark pX as
** undefined so that we can quickly detect the shallow-copy error */
pX->flags = MEM_Undefined;
@@ -80972,7 +76819,6 @@ SQLITE_PRIVATE void sqlite3VdbeMemAboutToChange(Vdbe *pVdbe, Mem *pMem){
}
#endif /* SQLITE_DEBUG */
-
/*
** Make an shallow copy of pFrom into pTo. Prior contents of
** pTo are freed. The pFrom->z field is not duplicated. If
@@ -81038,8 +76884,8 @@ SQLITE_PRIVATE void sqlite3VdbeMemMove(Mem *pTo, Mem *pFrom){
** Change the value of a Mem to be a string or a BLOB.
**
** The memory management strategy depends on the value of the xDel
-** parameter. If the value passed is SQLITE_TRANSIENT, then the
-** string is copied into a (possibly existing) buffer managed by the
+** parameter. If the value passed is SQLITE_TRANSIENT, then the
+** string is copied into a (possibly existing) buffer managed by the
** Mem structure. Otherwise, any existing buffer is freed and the
** pointer copied.
**
@@ -81118,10 +76964,19 @@ SQLITE_PRIVATE int sqlite3VdbeMemSetStr(
pMem->n = nByte;
pMem->flags = flags;
- pMem->enc = (enc==0 ? SQLITE_UTF8 : enc);
+ if( enc ){
+ pMem->enc = enc;
+#ifdef SQLITE_ENABLE_SESSION
+ }else if( pMem->db==0 ){
+ pMem->enc = SQLITE_UTF8;
+#endif
+ }else{
+ assert( pMem->db!=0 );
+ pMem->enc = ENC(pMem->db);
+ }
#ifndef SQLITE_OMIT_UTF16
- if( pMem->enc!=SQLITE_UTF8 && sqlite3VdbeMemHandleBom(pMem) ){
+ if( enc>SQLITE_UTF8 && sqlite3VdbeMemHandleBom(pMem) ){
return SQLITE_NOMEM_BKPT;
}
#endif
@@ -81148,7 +77003,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemSetStr(
** If this routine fails for any reason (malloc returns NULL or unable
** to read from the disk) then the pMem is left in an inconsistent state.
*/
-static SQLITE_NOINLINE int vdbeMemFromBtreeResize(
+SQLITE_PRIVATE int sqlite3VdbeMemFromBtree(
BtCursor *pCur, /* Cursor pointing at record to retrieve. */
u32 offset, /* Offset from the start of data to return bytes from. */
u32 amt, /* Number of bytes to return. */
@@ -81171,31 +77026,28 @@ static SQLITE_NOINLINE int vdbeMemFromBtreeResize(
}
return rc;
}
-SQLITE_PRIVATE int sqlite3VdbeMemFromBtree(
+SQLITE_PRIVATE int sqlite3VdbeMemFromBtreeZeroOffset(
BtCursor *pCur, /* Cursor pointing at record to retrieve. */
- u32 offset, /* Offset from the start of data to return bytes from. */
u32 amt, /* Number of bytes to return. */
Mem *pMem /* OUT: Return data in this Mem structure. */
){
- char *zData; /* Data from the btree layer */
u32 available = 0; /* Number of bytes available on the local btree page */
int rc = SQLITE_OK; /* Return code */
assert( sqlite3BtreeCursorIsValid(pCur) );
assert( !VdbeMemDynamic(pMem) );
- /* Note: the calls to BtreeKeyFetch() and DataFetch() below assert()
+ /* Note: the calls to BtreeKeyFetch() and DataFetch() below assert()
** that both the BtShared and database handle mutexes are held. */
assert( !sqlite3VdbeMemIsRowSet(pMem) );
- zData = (char *)sqlite3BtreePayloadFetch(pCur, &available);
- assert( zData!=0 );
+ pMem->z = (char *)sqlite3BtreePayloadFetch(pCur, &available);
+ assert( pMem->z!=0 );
- if( offset+amt<=available ){
- pMem->z = &zData[offset];
+ if( amt<=available ){
pMem->flags = MEM_Blob|MEM_Ephem;
pMem->n = (int)amt;
}else{
- rc = vdbeMemFromBtreeResize(pCur, offset, amt, pMem);
+ rc = sqlite3VdbeMemFromBtree(pCur, 0, amt, pMem);
}
return rc;
@@ -81277,7 +77129,7 @@ SQLITE_PRIVATE sqlite3_value *sqlite3ValueNew(sqlite3 *db){
}
/*
-** Context object passed by sqlite3Stat4ProbeSetValue() through to
+** Context object passed by sqlite3Stat4ProbeSetValue() through to
** valueNew(). See comments above valueNew() for details.
*/
struct ValueNewStat4Ctx {
@@ -81292,9 +77144,9 @@ struct ValueNewStat4Ctx {
** the second argument to this function is NULL, the object is allocated
** by calling sqlite3ValueNew().
**
-** Otherwise, if the second argument is non-zero, then this function is
+** Otherwise, if the second argument is non-zero, then this function is
** being called indirectly by sqlite3Stat4ProbeSetValue(). If it has not
-** already been allocated, allocate the UnpackedRecord structure that
+** already been allocated, allocate the UnpackedRecord structure that
** that function will return to its caller here. Then return a pointer to
** an sqlite3_value within the UnpackedRecord.a[] array.
*/
@@ -81308,7 +77160,7 @@ static sqlite3_value *valueNew(sqlite3 *db, struct ValueNewStat4Ctx *p){
int nByte; /* Bytes of space to allocate */
int i; /* Counter variable */
int nCol = pIdx->nColumn; /* Number of index columns including rowid */
-
+
nByte = sizeof(Mem) * nCol + ROUND8(sizeof(UnpackedRecord));
pRec = (UnpackedRecord*)sqlite3DbMallocZero(db, nByte);
if( pRec ){
@@ -81329,7 +77181,7 @@ static sqlite3_value *valueNew(sqlite3 *db, struct ValueNewStat4Ctx *p){
if( pRec==0 ) return 0;
p->ppRec[0] = pRec;
}
-
+
pRec->nField = p->iVal+1;
return &pRec->aMem[p->iVal];
}
@@ -81348,11 +77200,11 @@ static sqlite3_value *valueNew(sqlite3 *db, struct ValueNewStat4Ctx *p){
** * the SQLITE_FUNC_NEEDCOLL function flag is not set,
**
** then this routine attempts to invoke the SQL function. Assuming no
-** error occurs, output parameter (*ppVal) is set to point to a value
+** error occurs, output parameter (*ppVal) is set to point to a value
** object containing the result before returning SQLITE_OK.
**
** Affinity aff is applied to the result of the function before returning.
-** If the result is a text value, the sqlite3_value object uses encoding
+** If the result is a text value, the sqlite3_value object uses encoding
** enc.
**
** If the conditions above are not met, this function returns SQLITE_OK
@@ -81383,7 +77235,7 @@ static int valueFromFunction(
if( pList ) nVal = pList->nExpr;
pFunc = sqlite3FindFunction(db, p->u.zToken, nVal, enc, 0);
assert( pFunc );
- if( (pFunc->funcFlags & (SQLITE_FUNC_CONSTANT|SQLITE_FUNC_SLOCHNG))==0
+ if( (pFunc->funcFlags & (SQLITE_FUNC_CONSTANT|SQLITE_FUNC_SLOCHNG))==0
|| (pFunc->funcFlags & SQLITE_FUNC_NEEDCOLL)
){
return SQLITE_OK;
@@ -81531,14 +77383,18 @@ static int valueFromExpr(
}
}else if( op==TK_UMINUS ) {
/* This branch happens for multiple negative signs. Ex: -(-5) */
- if( SQLITE_OK==valueFromExpr(db,pExpr->pLeft,enc,affinity,&pVal,pCtx)
+ if( SQLITE_OK==valueFromExpr(db,pExpr->pLeft,enc,affinity,&pVal,pCtx)
&& pVal!=0
){
sqlite3VdbeMemNumerify(pVal);
if( pVal->flags & MEM_Real ){
pVal->u.r = -pVal->u.r;
}else if( pVal->u.i==SMALLEST_INT64 ){
+#ifndef SQLITE_OMIT_FLOATING_POINT
pVal->u.r = -(double)SMALLEST_INT64;
+#else
+ pVal->u.r = LARGEST_INT64;
+#endif
MemSetTypeFlag(pVal, MEM_Real);
}else{
pVal->u.i = -pVal->u.i;
@@ -81676,8 +77532,8 @@ static int stat4ValueFromExpr(
}
/*
-** This function is used to allocate and populate UnpackedRecord
-** structures intended to be compared against sample index keys stored
+** This function is used to allocate and populate UnpackedRecord
+** structures intended to be compared against sample index keys stored
** in the sqlite_stat4 table.
**
** A single call to this function populates zero or more fields of the
@@ -81688,14 +77544,14 @@ static int stat4ValueFromExpr(
**
** * The expression is a bound variable, and this is a reprepare, or
**
-** * The sqlite3ValueFromExpr() function is able to extract a value
+** * The sqlite3ValueFromExpr() function is able to extract a value
** from the expression (i.e. the expression is a literal value).
**
** Or, if pExpr is a TK_VECTOR, one field is populated for each of the
** vector components that match either of the two latter criteria listed
** above.
**
-** Before any value is appended to the record, the affinity of the
+** Before any value is appended to the record, the affinity of the
** corresponding column within index pIdx is applied to it. Before
** this function returns, output parameter *pnExtract is set to the
** number of values appended to the record.
@@ -81746,9 +77602,9 @@ SQLITE_PRIVATE int sqlite3Stat4ProbeSetValue(
/*
** Attempt to extract a value from expression pExpr using the methods
-** as described for sqlite3Stat4ProbeSetValue() above.
+** as described for sqlite3Stat4ProbeSetValue() above.
**
-** If successful, set *ppVal to point to a new value object and return
+** If successful, set *ppVal to point to a new value object and return
** SQLITE_OK. If no value can be extracted, but no other error occurs
** (e.g. OOM), return SQLITE_OK and set *ppVal to NULL. Or, if an error
** does occur, return an SQLite error code. The final value of *ppVal
@@ -81768,7 +77624,7 @@ SQLITE_PRIVATE int sqlite3Stat4ValueFromExpr(
** the column value into *ppVal. If *ppVal is initially NULL then a new
** sqlite3_value object is allocated.
**
-** If *ppVal is initially NULL then the caller is responsible for
+** If *ppVal is initially NULL then the caller is responsible for
** ensuring that the value written into *ppVal is eventually freed.
*/
SQLITE_PRIVATE int sqlite3Stat4Column(
@@ -81892,7 +77748,7 @@ SQLITE_PRIVATE int sqlite3ValueBytes(sqlite3_value *pVal, u8 enc){
**
*************************************************************************
** This file contains code used for creating, destroying, and populating
-** a VDBE (or an "sqlite3_stmt" as it is known to the outside world.)
+** a VDBE (or an "sqlite3_stmt" as it is known to the outside world.)
*/
/* #include "sqliteInt.h" */
/* #include "vdbeInt.h" */
@@ -82027,13 +77883,13 @@ SQLITE_PRIVATE void sqlite3VdbeSwap(Vdbe *pA, Vdbe *pB){
}
/*
-** Resize the Vdbe.aOp array so that it is at least nOp elements larger
+** Resize the Vdbe.aOp array so that it is at least nOp elements larger
** than its current size. nOp is guaranteed to be less than or equal
** to 1024/sizeof(Op).
**
** If an out-of-memory error occurs while resizing the array, return
-** SQLITE_NOMEM. In this case Vdbe.aOp and Vdbe.nOpAlloc remain
-** unchanged (this is so that any opcodes already allocated can be
+** SQLITE_NOMEM. In this case Vdbe.aOp and Vdbe.nOpAlloc remain
+** unchanged (this is so that any opcodes already allocated can be
** correctly deallocated along with the rest of the Vdbe).
*/
static int growOpArray(Vdbe *v, int nOp){
@@ -82041,7 +77897,7 @@ static int growOpArray(Vdbe *v, int nOp){
Parse *p = v->pParse;
/* The SQLITE_TEST_REALLOC_STRESS compile-time option is designed to force
- ** more frequent reallocs and hence provide more opportunities for
+ ** more frequent reallocs and hence provide more opportunities for
** simulated OOM faults. SQLITE_TEST_REALLOC_STRESS is generally used
** during testing only. With SQLITE_TEST_REALLOC_STRESS grow the op array
** by the minimum* amount required until the size reaches 512. Normal
@@ -82076,9 +77932,16 @@ static int growOpArray(Vdbe *v, int nOp){
#ifdef SQLITE_DEBUG
/* This routine is just a convenient place to set a breakpoint that will
** fire after each opcode is inserted and displayed using
-** "PRAGMA vdbe_addoptrace=on".
+** "PRAGMA vdbe_addoptrace=on". Parameters "pc" (program counter) and
+** pOp are available to make the breakpoint conditional.
+**
+** Other useful labels for breakpoints include:
+** test_trace_breakpoint(pc,pOp)
+** sqlite3CorruptError(lineno)
+** sqlite3MisuseError(lineno)
+** sqlite3CantopenError(lineno)
*/
-static void test_addop_breakpoint(void){
+static void test_addop_breakpoint(int pc, Op *pOp){
static int n = 0;
n++;
}
@@ -82131,7 +77994,7 @@ SQLITE_PRIVATE int sqlite3VdbeAddOp3(Vdbe *p, int op, int p1, int p2, int p3){
#ifdef SQLITE_DEBUG
if( p->db->flags & SQLITE_VdbeAddopTrace ){
sqlite3VdbePrintOp(0, i, &p->aOp[i]);
- test_addop_breakpoint();
+ test_addop_breakpoint(i, &p->aOp[i]);
}
#endif
#ifdef VDBE_PROFILE
@@ -82299,7 +78162,7 @@ SQLITE_PRIVATE void sqlite3ExplainBreakpoint(const char *z1, const char *z2){
#endif
/*
-** Add a new OP_ opcode.
+** Add a new OP_Explain opcode.
**
** If the bPush flag is true, then make this opcode the parent for
** subsequent Explains until sqlite3VdbeExplainPop() is called.
@@ -82473,19 +78336,19 @@ SQLITE_PRIVATE void sqlite3VdbeReusable(Vdbe *p){
/*
** The following type and function are used to iterate through all opcodes
-** in a Vdbe main program and each of the sub-programs (triggers) it may
+** in a Vdbe main program and each of the sub-programs (triggers) it may
** invoke directly or indirectly. It should be used as follows:
**
** Op *pOp;
** VdbeOpIter sIter;
**
** memset(&sIter, 0, sizeof(sIter));
-** sIter.v = v; // v is of type Vdbe*
+** sIter.v = v; // v is of type Vdbe*
** while( (pOp = opIterNext(&sIter)) ){
** // Do something with pOp
** }
** sqlite3DbFree(v->db, sIter.apSub);
-**
+**
*/
typedef struct VdbeOpIter VdbeOpIter;
struct VdbeOpIter {
@@ -82518,7 +78381,7 @@ static Op *opIterNext(VdbeOpIter *p){
p->iSub++;
p->iAddr = 0;
}
-
+
if( pRet->p4type==P4_SUBPROGRAM ){
int nByte = (p->nSub+1)*sizeof(SubProgram*);
int j;
@@ -82549,9 +78412,10 @@ static Op *opIterNext(VdbeOpIter *p){
** * OP_HaltIfNull with P1=SQLITE_CONSTRAINT and P2=OE_Abort.
** * OP_Destroy
** * OP_VUpdate
+** * OP_VCreate
** * OP_VRename
** * OP_FkCounter with P2==0 (immediate foreign key constraint)
-** * OP_CreateBtree/BTREE_INTKEY and OP_InitCoroutine
+** * OP_CreateBtree/BTREE_INTKEY and OP_InitCoroutine
** (for CREATE TABLE AS SELECT ...)
**
** Then check that the value of Parse.mayAbort is true if an
@@ -82574,10 +78438,11 @@ SQLITE_PRIVATE int sqlite3VdbeAssertMayAbort(Vdbe *v, int mayAbort){
while( (pOp = opIterNext(&sIter))!=0 ){
int opcode = pOp->opcode;
- if( opcode==OP_Destroy || opcode==OP_VUpdate || opcode==OP_VRename
+ if( opcode==OP_Destroy || opcode==OP_VUpdate || opcode==OP_VRename
|| opcode==OP_VDestroy
+ || opcode==OP_VCreate
|| (opcode==OP_ParseSchema && pOp->p4.z==0)
- || ((opcode==OP_Halt || opcode==OP_HaltIfNull)
+ || ((opcode==OP_Halt || opcode==OP_HaltIfNull)
&& ((pOp->p1)!=SQLITE_OK && pOp->p2==OE_Abort))
){
hasAbort = 1;
@@ -82586,7 +78451,7 @@ SQLITE_PRIVATE int sqlite3VdbeAssertMayAbort(Vdbe *v, int mayAbort){
if( opcode==OP_CreateBtree && pOp->p3==BTREE_INTKEY ) hasCreateTable = 1;
if( mayAbort ){
/* hasCreateIndex may also be set for some DELETE statements that use
- ** OP_Clear. So this routine may end up returning true in the case
+ ** OP_Clear. So this routine may end up returning true in the case
** where a "DELETE FROM tbl" has a statement-journal but does not
** require one. This is not so bad - it is an inefficiency, not a bug. */
if( opcode==OP_CreateBtree && pOp->p3==BTREE_BLOBKEY ) hasCreateIndex = 1;
@@ -82681,7 +78546,7 @@ static void resolveP2Values(Vdbe *p, int *pMaxFuncArgs){
switch( pOp->opcode ){
case OP_Transaction: {
if( pOp->p2!=0 ) p->readOnly = 0;
- /* fall thru */
+ /* no break */ deliberate_fall_through
}
case OP_AutoCommit:
case OP_Savepoint: {
@@ -82702,7 +78567,7 @@ static void resolveP2Values(Vdbe *p, int *pMaxFuncArgs){
pOp->p4.xAdvance = sqlite3BtreeNext;
pOp->p4type = P4_ADVANCE;
/* The code generator never codes any of these opcodes as a jump
- ** to a label. They are always coded as a jump backwards to a
+ ** to a label. They are always coded as a jump backwards to a
** known address */
assert( pOp->p2>=0 );
break;
@@ -82711,7 +78576,7 @@ static void resolveP2Values(Vdbe *p, int *pMaxFuncArgs){
pOp->p4.xAdvance = sqlite3BtreePrevious;
pOp->p4type = P4_ADVANCE;
/* The code generator never codes any of these opcodes as a jump
- ** to a label. They are always coded as a jump backwards to a
+ ** to a label. They are always coded as a jump backwards to a
** known address */
assert( pOp->p2>=0 );
break;
@@ -82728,6 +78593,7 @@ static void resolveP2Values(Vdbe *p, int *pMaxFuncArgs){
n = pOp[-1].p1;
if( n>nMaxArgs ) nMaxArgs = n;
/* Fall through into the default case */
+ /* no break */ deliberate_fall_through
}
#endif
default: {
@@ -82809,12 +78675,12 @@ SQLITE_PRIVATE void sqlite3VdbeVerifyAbortable(Vdbe *p, int onError){
/*
** This function returns a pointer to the array of opcodes associated with
** the Vdbe passed as the first argument. It is the callers responsibility
-** to arrange for the returned array to be eventually freed using the
+** to arrange for the returned array to be eventually freed using the
** vdbeFreeOpArray() function.
**
** Before returning, *pnOp is set to the number of entries in the returned
-** array. Also, *pnMaxArg is set to the larger of its current value and
-** the number of entries in the Vdbe.apArg[] array required to execute the
+** array. Also, *pnMaxArg is set to the larger of its current value and
+** the number of entries in the Vdbe.apArg[] array required to execute the
** returned program.
*/
SQLITE_PRIVATE VdbeOp *sqlite3VdbeTakeOpArray(Vdbe *p, int *pnOp, int *pnMaxArg){
@@ -82888,7 +78754,7 @@ SQLITE_PRIVATE VdbeOp *sqlite3VdbeAddOpList(
SQLITE_PRIVATE void sqlite3VdbeScanStatus(
Vdbe *p, /* VM to add scanstatus() to */
int addrExplain, /* Address of OP_Explain (or 0) */
- int addrLoop, /* Address of loop counter */
+ int addrLoop, /* Address of loop counter */
int addrVisit, /* Address of rows visited counter */
LogEst nEst, /* Estimated number of output rows */
const char *zName /* Name of table or index being scanned */
@@ -82938,6 +78804,34 @@ SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe *p, int addr){
sqlite3VdbeChangeP2(p, addr, p->nOp);
}
+/*
+** Change the P2 operand of the jump instruction at addr so that
+** the jump lands on the next opcode. Or if the jump instruction was
+** the previous opcode (and is thus a no-op) then simply back up
+** the next instruction counter by one slot so that the jump is
+** overwritten by the next inserted opcode.
+**
+** This routine is an optimization of sqlite3VdbeJumpHere() that
+** strives to omit useless byte-code like this:
+**
+** 7 Once 0 8 0
+** 8 ...
+*/
+SQLITE_PRIVATE void sqlite3VdbeJumpHereOrPopInst(Vdbe *p, int addr){
+ if( addr==p->nOp-1 ){
+ assert( p->aOp[addr].opcode==OP_Once
+ || p->aOp[addr].opcode==OP_If
+ || p->aOp[addr].opcode==OP_FkIfZero );
+ assert( p->aOp[addr].p4type==0 );
+#ifdef SQLITE_VDBE_COVERAGE
+ sqlite3VdbeGetOp(p,-1)->iSrcLine = 0; /* Erase VdbeCoverage() macros */
+#endif
+ p->nOp--;
+ }else{
+ sqlite3VdbeChangeP2(p, addr, p->nOp);
+ }
+}
+
/*
** If the input FuncDef structure is ephemeral, then free it. If
@@ -83006,8 +78900,8 @@ static void freeP4(sqlite3 *db, int p4type, void *p4){
/*
** Free the space allocated for aOp and any p4 values allocated for the
-** opcodes contained within. If aOp is not NULL it is assumed to contain
-** nOp entries.
+** opcodes contained within. If aOp is not NULL it is assumed to contain
+** nOp entries.
*/
static void vdbeFreeOpArray(sqlite3 *db, Op *aOp, int nOp){
if( aOp ){
@@ -83016,7 +78910,7 @@ static void vdbeFreeOpArray(sqlite3 *db, Op *aOp, int nOp){
if( pOp->p4type <= P4_FREE_IF_LE ) freeP4(db, pOp->p4type, pOp->p4.p);
#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS
sqlite3DbFree(db, pOp->zComment);
-#endif
+#endif
}
sqlite3DbFreeNN(db, aOp);
}
@@ -83066,6 +78960,41 @@ SQLITE_PRIVATE int sqlite3VdbeDeletePriorOpcode(Vdbe *p, u8 op){
}
}
+#ifdef SQLITE_DEBUG
+/*
+** Generate an OP_ReleaseReg opcode to indicate that a range of
+** registers, except any identified by mask, are no longer in use.
+*/
+SQLITE_PRIVATE void sqlite3VdbeReleaseRegisters(
+ Parse *pParse, /* Parsing context */
+ int iFirst, /* Index of first register to be released */
+ int N, /* Number of registers to release */
+ u32 mask, /* Mask of registers to NOT release */
+ int bUndefine /* If true, mark registers as undefined */
+){
+ if( N==0 ) return;
+ assert( pParse->pVdbe );
+ assert( iFirst>=1 );
+ assert( iFirst+N-1<=pParse->nMem );
+ if( N<=31 && mask!=0 ){
+ while( N>0 && (mask&1)!=0 ){
+ mask >>= 1;
+ iFirst++;
+ N--;
+ }
+ while( N>0 && N<=32 && (mask & MASKBIT32(N-1))!=0 ){
+ mask &= ~MASKBIT32(N-1);
+ N--;
+ }
+ }
+ if( N>0 ){
+ sqlite3VdbeAddOp3(pParse->pVdbe, OP_ReleaseReg, iFirst, N, *(int*)&mask);
+ if( bUndefine ) sqlite3VdbeChangeP5(pParse->pVdbe, 1);
+ }
+}
+#endif /* SQLITE_DEBUG */
+
+
/*
** Change the value of the P4 operand for a specific instruction.
** This routine is useful when a large program is loaded from a
@@ -83076,7 +79005,7 @@ SQLITE_PRIVATE int sqlite3VdbeDeletePriorOpcode(Vdbe *p, u8 op){
** the string is made into memory obtained from sqlite3_malloc().
** A value of n==0 means copy bytes of zP4 up to and including the
** first null byte. If n>0 then copy n+1 bytes of zP4.
-**
+**
** Other values of n (P4_STATIC, P4_COLLSEQ etc.) indicate that zP4 points
** to a string or structure that is guaranteed to exist for the lifetime of
** the Vdbe. In these cases we can just copy the pointer.
@@ -83137,7 +79066,7 @@ SQLITE_PRIVATE void sqlite3VdbeChangeP4(Vdbe *p, int addr, const char *zP4, int
}
/*
-** Change the P4 operand of the most recently coded instruction
+** Change the P4 operand of the most recently coded instruction
** to the value defined by the arguments. This is a high-speed
** version of sqlite3VdbeChangeP4().
**
@@ -83183,7 +79112,8 @@ SQLITE_PRIVATE void sqlite3VdbeSetP4KeyInfo(Parse *pParse, Index *pIdx){
*/
static void vdbeVComment(Vdbe *p, const char *zFormat, va_list ap){
assert( p->nOp>0 || p->aOp==0 );
- assert( p->aOp==0 || p->aOp[p->nOp-1].zComment==0 || p->db->mallocFailed );
+ assert( p->aOp==0 || p->aOp[p->nOp-1].zComment==0 || p->db->mallocFailed
+ || p->pParse->nErr>0 );
if( p->nOp ){
assert( p->aOp );
sqlite3DbFree(p->db, p->aOp[p->nOp-1].zComment);
@@ -83226,7 +79156,7 @@ SQLITE_PRIVATE void sqlite3VdbeSetLineNumber(Vdbe *v, int iLine){
** routine, then a pointer to a dummy VdbeOp will be returned. That opcode
** is readable but not writable, though it is cast to a writable value.
** The return of a dummy opcode allows the call to continue functioning
-** after an OOM fault without having to check to see if the return from
+** after an OOM fault without having to check to see if the return from
** this routine is a valid pointer. But because the dummy.opcode is 0,
** dummy will never be written to. This is verified by code inspection and
** by running with Valgrind.
@@ -83273,17 +79203,19 @@ static int translateP(char c, const Op *pOp){
** "PX@PY+1" -> "r[X..X+Y]" or "r[x]" if y is 0
** "PY..PY" -> "r[X..Y]" or "r[x]" if y<=x
*/
-static int displayComment(
+SQLITE_PRIVATE char *sqlite3VdbeDisplayComment(
+ sqlite3 *db, /* Optional - Oom error reporting only */
const Op *pOp, /* The opcode to be commented */
- const char *zP4, /* Previously obtained value for P4 */
- char *zTemp, /* Write result here */
- int nTemp /* Space available in zTemp[] */
+ const char *zP4 /* Previously obtained value for P4 */
){
const char *zOpName;
const char *zSynopsis;
int nOpName;
- int ii, jj;
+ int ii;
char zAlt[50];
+ StrAccum x;
+
+ sqlite3StrAccumInit(&x, 0, 0, 0, SQLITE_MAX_LENGTH);
zOpName = sqlite3OpcodeName(pOp->opcode);
nOpName = sqlite3Strlen30(zOpName);
if( zOpName[nOpName+1] ){
@@ -83298,53 +79230,64 @@ static int displayComment(
}
zSynopsis = zAlt;
}
- for(ii=jj=0; jjzComment);
+ sqlite3_str_appendall(&x, pOp->zComment);
seenCom = 1;
}else{
int v1 = translateP(c, pOp);
int v2;
- sqlite3_snprintf(nTemp-jj, zTemp+jj, "%d", v1);
if( strncmp(zSynopsis+ii+1, "@P", 2)==0 ){
ii += 3;
- jj += sqlite3Strlen30(zTemp+jj);
v2 = translateP(zSynopsis[ii], pOp);
if( strncmp(zSynopsis+ii+1,"+1",2)==0 ){
ii += 2;
v2++;
}
- if( v2>1 ){
- sqlite3_snprintf(nTemp-jj, zTemp+jj, "..%d", v1+v2-1);
+ if( v2<2 ){
+ sqlite3_str_appendf(&x, "%d", v1);
+ }else{
+ sqlite3_str_appendf(&x, "%d..%d", v1, v1+v2-1);
+ }
+ }else if( strncmp(zSynopsis+ii+1, "@NP", 3)==0 ){
+ sqlite3_context *pCtx = pOp->p4.pCtx;
+ if( pOp->p4type!=P4_FUNCCTX || pCtx->argc==1 ){
+ sqlite3_str_appendf(&x, "%d", v1);
+ }else if( pCtx->argc>1 ){
+ sqlite3_str_appendf(&x, "%d..%d", v1, v1+pCtx->argc-1);
+ }else{
+ assert( x.nChar>2 );
+ x.nChar -= 2;
+ ii++;
+ }
+ ii += 3;
+ }else{
+ sqlite3_str_appendf(&x, "%d", v1);
+ if( strncmp(zSynopsis+ii+1, "..P3", 4)==0 && pOp->p3==0 ){
+ ii += 4;
}
- }else if( strncmp(zSynopsis+ii+1, "..P3", 4)==0 && pOp->p3==0 ){
- ii += 4;
}
}
- jj += sqlite3Strlen30(zTemp+jj);
}else{
- zTemp[jj++] = c;
+ sqlite3_str_appendchar(&x, 1, c);
}
}
- if( !seenCom && jjzComment ){
- sqlite3_snprintf(nTemp-jj, zTemp+jj, "; %s", pOp->zComment);
- jj += sqlite3Strlen30(zTemp+jj);
+ if( !seenCom && pOp->zComment ){
+ sqlite3_str_appendf(&x, "; %s", pOp->zComment);
}
- if( jjzComment ){
- sqlite3_snprintf(nTemp, zTemp, "%s", pOp->zComment);
- jj = sqlite3Strlen30(zTemp);
- }else{
- zTemp[0] = 0;
- jj = 0;
+ sqlite3_str_appendall(&x, pOp->zComment);
}
- return jj;
+ if( (x.accError & SQLITE_NOMEM)!=0 && db!=0 ){
+ sqlite3OomFault(db);
+ }
+ return sqlite3StrAccumFinish(&x);
}
-#endif /* SQLITE_DEBUG */
+#endif /* SQLITE_ENABLE_EXPLAIN_COMMENTS */
#if VDBE_DISPLAY_P4 && defined(SQLITE_ENABLE_CURSOR_HINTS)
/*
@@ -83425,11 +79368,11 @@ static void displayP4Expr(StrAccum *p, Expr *pExpr){
** Compute a string that describes the P4 parameter for an opcode.
** Use zTemp for any required temporary buffer space.
*/
-static char *displayP4(Op *pOp, char *zTemp, int nTemp){
- char *zP4 = zTemp;
+SQLITE_PRIVATE char *sqlite3VdbeDisplayP4(sqlite3 *db, Op *pOp){
+ char *zP4 = 0;
StrAccum x;
- assert( nTemp>=20 );
- sqlite3StrAccumInit(&x, 0, zTemp, nTemp, 0);
+
+ sqlite3StrAccumInit(&x, 0, 0, 0, SQLITE_MAX_LENGTH);
switch( pOp->p4type ){
case P4_KEYINFO: {
int j;
@@ -83440,9 +79383,9 @@ static char *displayP4(Op *pOp, char *zTemp, int nTemp){
CollSeq *pColl = pKeyInfo->aColl[j];
const char *zColl = pColl ? pColl->zName : "";
if( strcmp(zColl, "BINARY")==0 ) zColl = "B";
- sqlite3_str_appendf(&x, ",%s%s%s",
- (pKeyInfo->aSortFlags[j] & KEYINFO_ORDER_DESC) ? "-" : "",
- (pKeyInfo->aSortFlags[j] & KEYINFO_ORDER_BIGNULL)? "N." : "",
+ sqlite3_str_appendf(&x, ",%s%s%s",
+ (pKeyInfo->aSortFlags[j] & KEYINFO_ORDER_DESC) ? "-" : "",
+ (pKeyInfo->aSortFlags[j] & KEYINFO_ORDER_BIGNULL)? "N." : "",
zColl);
}
sqlite3_str_append(&x, ")", 1);
@@ -83455,8 +79398,11 @@ static char *displayP4(Op *pOp, char *zTemp, int nTemp){
}
#endif
case P4_COLLSEQ: {
+ static const char *const encnames[] = {"?", "8", "16LE", "16BE"};
CollSeq *pColl = pOp->p4.pColl;
- sqlite3_str_appendf(&x, "(%.20s)", pColl->zName);
+ assert( pColl->enc>=0 && pColl->enc<4 );
+ sqlite3_str_appendf(&x, "%.18s-%s", pColl->zName,
+ encnames[pColl->enc]);
break;
}
case P4_FUNCDEF: {
@@ -83505,41 +79451,37 @@ static char *displayP4(Op *pOp, char *zTemp, int nTemp){
}
#endif
case P4_INTARRAY: {
- int i;
- int *ai = pOp->p4.ai;
- int n = ai[0]; /* The first element of an INTARRAY is always the
+ u32 i;
+ u32 *ai = pOp->p4.ai;
+ u32 n = ai[0]; /* The first element of an INTARRAY is always the
** count of the number of elements to follow */
for(i=1; i<=n; i++){
- sqlite3_str_appendf(&x, ",%d", ai[i]);
+ sqlite3_str_appendf(&x, "%c%u", (i==1 ? '[' : ','), ai[i]);
}
- zTemp[0] = '[';
sqlite3_str_append(&x, "]", 1);
break;
}
case P4_SUBPROGRAM: {
- sqlite3_str_appendf(&x, "program");
+ zP4 = "program";
break;
}
case P4_DYNBLOB:
case P4_ADVANCE: {
- zTemp[0] = 0;
break;
}
case P4_TABLE: {
- sqlite3_str_appendf(&x, "%s", pOp->p4.pTab->zName);
+ zP4 = pOp->p4.pTab->zName;
break;
}
default: {
zP4 = pOp->p4.z;
- if( zP4==0 ){
- zP4 = zTemp;
- zTemp[0] = 0;
- }
}
}
- sqlite3StrAccumFinish(&x);
- assert( zP4!=0 );
- return zP4;
+ if( zP4 ) sqlite3_str_appendall(&x, zP4);
+ if( (x.accError & SQLITE_NOMEM)!=0 ){
+ sqlite3OomFault(db);
+ }
+ return sqlite3StrAccumFinish(&x);
}
#endif /* VDBE_DISPLAY_P4 */
@@ -83570,13 +79512,13 @@ SQLITE_PRIVATE void sqlite3VdbeUsesBtree(Vdbe *p, int i){
**
** If SQLite is not threadsafe but does support shared-cache mode, then
** sqlite3BtreeEnter() is invoked to set the BtShared.db variables
-** of all of BtShared structures accessible via the database handle
+** of all of BtShared structures accessible via the database handle
** associated with the VM.
**
** If SQLite is not threadsafe and does not support shared-cache mode, this
** function is a no-op.
**
-** The p->btreeMask field is a bitmask of all btrees that the prepared
+** The p->btreeMask field is a bitmask of all btrees that the prepared
** statement p will ever use. Let N be the number of bits in p->btreeMask
** corresponding to btrees that use shared cache. Then the runtime of
** this routine is N*N. But as N is rarely more than 1, this should not
@@ -83629,24 +79571,30 @@ SQLITE_PRIVATE void sqlite3VdbeLeave(Vdbe *p){
*/
SQLITE_PRIVATE void sqlite3VdbePrintOp(FILE *pOut, int pc, VdbeOp *pOp){
char *zP4;
- char zPtr[50];
- char zCom[100];
+ char *zCom;
+ sqlite3 dummyDb;
static const char *zFormat1 = "%4d %-13s %4d %4d %4d %-13s %.2X %s\n";
if( pOut==0 ) pOut = stdout;
- zP4 = displayP4(pOp, zPtr, sizeof(zPtr));
+ sqlite3BeginBenignMalloc();
+ dummyDb.mallocFailed = 1;
+ zP4 = sqlite3VdbeDisplayP4(&dummyDb, pOp);
#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS
- displayComment(pOp, zP4, zCom, sizeof(zCom));
+ zCom = sqlite3VdbeDisplayComment(0, pOp, zP4);
#else
- zCom[0] = 0;
+ zCom = 0;
#endif
/* NB: The sqlite3OpcodeName() function is implemented by code created
** by the mkopcodeh.awk and mkopcodec.awk scripts which extract the
** information from the vdbe.c source text */
- fprintf(pOut, zFormat1, pc,
- sqlite3OpcodeName(pOp->opcode), pOp->p1, pOp->p2, pOp->p3, zP4, pOp->p5,
- zCom
+ fprintf(pOut, zFormat1, pc,
+ sqlite3OpcodeName(pOp->opcode), pOp->p1, pOp->p2, pOp->p3,
+ zP4 ? zP4 : "", pOp->p5,
+ zCom ? zCom : ""
);
fflush(pOut);
+ sqlite3_free(zP4);
+ sqlite3_free(zCom);
+ sqlite3EndBenignMalloc();
}
#endif
@@ -83683,15 +79631,15 @@ static void releaseMemArray(Mem *p, int N){
assert( sqlite3VdbeCheckMemInvariants(p) );
/* This block is really an inlined version of sqlite3VdbeMemRelease()
- ** that takes advantage of the fact that the memory cell value is
+ ** that takes advantage of the fact that the memory cell value is
** being set to NULL after releasing any dynamic resources.
**
- ** The justification for duplicating code is that according to
- ** callgrind, this causes a certain test case to hit the CPU 4.7
- ** percent less (x86 linux, gcc version 4.1.2, -O6) than if
+ ** The justification for duplicating code is that according to
+ ** callgrind, this causes a certain test case to hit the CPU 4.7
+ ** percent less (x86 linux, gcc version 4.1.2, -O6) than if
** sqlite3MemRelease() were called from here. With -O2, this jumps
- ** to 6.6 percent. The test case is inserting 1000 rows into a table
- ** with no indexes using a single prepared INSERT statement, bind()
+ ** to 6.6 percent. The test case is inserting 1000 rows into a table
+ ** with no indexes using a single prepared INSERT statement, bind()
** and reset(). Inserts are grouped into a transaction.
*/
testcase( p->flags & MEM_Agg );
@@ -83737,6 +79685,121 @@ SQLITE_PRIVATE void sqlite3VdbeFrameMemDel(void *pArg){
pFrame->v->pDelFrame = pFrame;
}
+#if defined(SQLITE_ENABLE_BYTECODE_VTAB) || !defined(SQLITE_OMIT_EXPLAIN)
+/*
+** Locate the next opcode to be displayed in EXPLAIN or EXPLAIN
+** QUERY PLAN output.
+**
+** Return SQLITE_ROW on success. Return SQLITE_DONE if there are no
+** more opcodes to be displayed.
+*/
+SQLITE_PRIVATE int sqlite3VdbeNextOpcode(
+ Vdbe *p, /* The statement being explained */
+ Mem *pSub, /* Storage for keeping track of subprogram nesting */
+ int eMode, /* 0: normal. 1: EQP. 2: TablesUsed */
+ int *piPc, /* IN/OUT: Current rowid. Overwritten with next rowid */
+ int *piAddr, /* OUT: Write index into (*paOp)[] here */
+ Op **paOp /* OUT: Write the opcode array here */
+){
+ int nRow; /* Stop when row count reaches this */
+ int nSub = 0; /* Number of sub-vdbes seen so far */
+ SubProgram **apSub = 0; /* Array of sub-vdbes */
+ int i; /* Next instruction address */
+ int rc = SQLITE_OK; /* Result code */
+ Op *aOp = 0; /* Opcode array */
+ int iPc; /* Rowid. Copy of value in *piPc */
+
+ /* When the number of output rows reaches nRow, that means the
+ ** listing has finished and sqlite3_step() should return SQLITE_DONE.
+ ** nRow is the sum of the number of rows in the main program, plus
+ ** the sum of the number of rows in all trigger subprograms encountered
+ ** so far. The nRow value will increase as new trigger subprograms are
+ ** encountered, but p->pc will eventually catch up to nRow.
+ */
+ nRow = p->nOp;
+ if( pSub!=0 ){
+ if( pSub->flags&MEM_Blob ){
+ /* pSub is initiallly NULL. It is initialized to a BLOB by
+ ** the P4_SUBPROGRAM processing logic below */
+ nSub = pSub->n/sizeof(Vdbe*);
+ apSub = (SubProgram **)pSub->z;
+ }
+ for(i=0; inOp;
+ }
+ }
+ iPc = *piPc;
+ while(1){ /* Loop exits via break */
+ i = iPc++;
+ if( i>=nRow ){
+ p->rc = SQLITE_OK;
+ rc = SQLITE_DONE;
+ break;
+ }
+ if( inOp ){
+ /* The rowid is small enough that we are still in the
+ ** main program. */
+ aOp = p->aOp;
+ }else{
+ /* We are currently listing subprograms. Figure out which one and
+ ** pick up the appropriate opcode. */
+ int j;
+ i -= p->nOp;
+ assert( apSub!=0 );
+ assert( nSub>0 );
+ for(j=0; i>=apSub[j]->nOp; j++){
+ i -= apSub[j]->nOp;
+ assert( inOp || j+1aOp;
+ }
+
+ /* When an OP_Program opcode is encounter (the only opcode that has
+ ** a P4_SUBPROGRAM argument), expand the size of the array of subprograms
+ ** kept in p->aMem[9].z to hold the new program - assuming this subprogram
+ ** has not already been seen.
+ */
+ if( pSub!=0 && aOp[i].p4type==P4_SUBPROGRAM ){
+ int nByte = (nSub+1)*sizeof(SubProgram*);
+ int j;
+ for(j=0; jrc = sqlite3VdbeMemGrow(pSub, nByte, nSub!=0);
+ if( p->rc!=SQLITE_OK ){
+ rc = SQLITE_ERROR;
+ break;
+ }
+ apSub = (SubProgram **)pSub->z;
+ apSub[nSub++] = aOp[i].p4.pProgram;
+ MemSetTypeFlag(pSub, MEM_Blob);
+ pSub->n = nSub*sizeof(SubProgram*);
+ nRow += aOp[i].p4.pProgram->nOp;
+ }
+ }
+ if( eMode==0 ) break;
+#ifdef SQLITE_ENABLE_BYTECODE_VTAB
+ if( eMode==2 ){
+ Op *pOp = aOp + i;
+ if( pOp->opcode==OP_OpenRead ) break;
+ if( pOp->opcode==OP_OpenWrite && (pOp->p5 & OPFLAG_P2ISREG)==0 ) break;
+ if( pOp->opcode==OP_ReopenIdx ) break;
+ }else
+#endif
+ {
+ assert( eMode==1 );
+ if( aOp[i].opcode==OP_Explain ) break;
+ if( aOp[i].opcode==OP_Init && iPc>1 ) break;
+ }
+ }
+ *piPc = iPc;
+ *piAddr = i;
+ *paOp = aOp;
+ return rc;
+}
+#endif /* SQLITE_ENABLE_BYTECODE_VTAB || !SQLITE_OMIT_EXPLAIN */
+
/*
** Delete a VdbeFrame object and its contents. VdbeFrame objects are
@@ -83777,16 +79840,14 @@ SQLITE_PRIVATE void sqlite3VdbeFrameDelete(VdbeFrame *p){
SQLITE_PRIVATE int sqlite3VdbeList(
Vdbe *p /* The VDBE */
){
- int nRow; /* Stop when row count reaches this */
- int nSub = 0; /* Number of sub-vdbes seen so far */
- SubProgram **apSub = 0; /* Array of sub-vdbes */
Mem *pSub = 0; /* Memory cell hold array of subprogs */
sqlite3 *db = p->db; /* The database connection */
int i; /* Loop counter */
int rc = SQLITE_OK; /* Return code */
Mem *pMem = &p->aMem[1]; /* First Mem of result set */
int bListSubprogs = (p->explain==1 || (db->flags & SQLITE_TriggerEQP)!=0);
- Op *pOp = 0;
+ Op *aOp; /* Array of opcodes */
+ Op *pOp; /* Current opcode */
assert( p->explain );
assert( p->magic==VDBE_MAGIC_RUN );
@@ -83806,14 +79867,6 @@ SQLITE_PRIVATE int sqlite3VdbeList(
return SQLITE_ERROR;
}
- /* When the number of output rows reaches nRow, that means the
- ** listing has finished and sqlite3_step() should return SQLITE_DONE.
- ** nRow is the sum of the number of rows in the main program, plus
- ** the sum of the number of rows in all trigger subprograms encountered
- ** so far. The nRow value will increase as new trigger subprograms are
- ** encountered, but p->pc will eventually catch up to nRow.
- */
- nRow = p->nOp;
if( bListSubprogs ){
/* The first 8 memory cells are used for the result set. So we will
** commandeer the 9th cell to use as storage for an array of pointers
@@ -83821,147 +79874,55 @@ SQLITE_PRIVATE int sqlite3VdbeList(
** cells. */
assert( p->nMem>9 );
pSub = &p->aMem[9];
- if( pSub->flags&MEM_Blob ){
- /* On the first call to sqlite3_step(), pSub will hold a NULL. It is
- ** initialized to a BLOB by the P4_SUBPROGRAM processing logic below */
- nSub = pSub->n/sizeof(Vdbe*);
- apSub = (SubProgram **)pSub->z;
- }
- for(i=0; inOp;
- }
+ }else{
+ pSub = 0;
}
- while(1){ /* Loop exits via break */
- i = p->pc++;
- if( i>=nRow ){
- p->rc = SQLITE_OK;
- rc = SQLITE_DONE;
- break;
- }
- if( inOp ){
- /* The output line number is small enough that we are still in the
- ** main program. */
- pOp = &p->aOp[i];
- }else{
- /* We are currently listing subprograms. Figure out which one and
- ** pick up the appropriate opcode. */
- int j;
- i -= p->nOp;
- assert( apSub!=0 );
- assert( nSub>0 );
- for(j=0; i>=apSub[j]->nOp; j++){
- i -= apSub[j]->nOp;
- assert( inOp || j+1aOp[i];
- }
-
- /* When an OP_Program opcode is encounter (the only opcode that has
- ** a P4_SUBPROGRAM argument), expand the size of the array of subprograms
- ** kept in p->aMem[9].z to hold the new program - assuming this subprogram
- ** has not already been seen.
- */
- if( bListSubprogs && pOp->p4type==P4_SUBPROGRAM ){
- int nByte = (nSub+1)*sizeof(SubProgram*);
- int j;
- for(j=0; jp4.pProgram ) break;
- }
- if( j==nSub ){
- p->rc = sqlite3VdbeMemGrow(pSub, nByte, nSub!=0);
- if( p->rc!=SQLITE_OK ){
- rc = SQLITE_ERROR;
- break;
- }
- apSub = (SubProgram **)pSub->z;
- apSub[nSub++] = pOp->p4.pProgram;
- pSub->flags |= MEM_Blob;
- pSub->n = nSub*sizeof(SubProgram*);
- nRow += pOp->p4.pProgram->nOp;
- }
- }
- if( p->explain<2 ) break;
- if( pOp->opcode==OP_Explain ) break;
- if( pOp->opcode==OP_Init && p->pc>1 ) break;
- }
+ /* Figure out which opcode is next to display */
+ rc = sqlite3VdbeNextOpcode(p, pSub, p->explain==2, &p->pc, &i, &aOp);
if( rc==SQLITE_OK ){
- if( db->u1.isInterrupted ){
+ pOp = aOp + i;
+ if( AtomicLoad(&db->u1.isInterrupted) ){
p->rc = SQLITE_INTERRUPT;
rc = SQLITE_ERROR;
sqlite3VdbeError(p, sqlite3ErrStr(p->rc));
}else{
- char *zP4;
- if( p->explain==1 ){
- pMem->flags = MEM_Int;
- pMem->u.i = i; /* Program counter */
- pMem++;
-
- pMem->flags = MEM_Static|MEM_Str|MEM_Term;
- pMem->z = (char*)sqlite3OpcodeName(pOp->opcode); /* Opcode */
- assert( pMem->z!=0 );
- pMem->n = sqlite3Strlen30(pMem->z);
- pMem->enc = SQLITE_UTF8;
- pMem++;
- }
-
- pMem->flags = MEM_Int;
- pMem->u.i = pOp->p1; /* P1 */
- pMem++;
-
- pMem->flags = MEM_Int;
- pMem->u.i = pOp->p2; /* P2 */
- pMem++;
-
- pMem->flags = MEM_Int;
- pMem->u.i = pOp->p3; /* P3 */
- pMem++;
-
- if( sqlite3VdbeMemClearAndResize(pMem, 100) ){ /* P4 */
- assert( p->db->mallocFailed );
- return SQLITE_ERROR;
- }
- pMem->flags = MEM_Str|MEM_Term;
- zP4 = displayP4(pOp, pMem->z, pMem->szMalloc);
- if( zP4!=pMem->z ){
- pMem->n = 0;
- sqlite3VdbeMemSetStr(pMem, zP4, -1, SQLITE_UTF8, 0);
+ char *zP4 = sqlite3VdbeDisplayP4(db, pOp);
+ if( p->explain==2 ){
+ sqlite3VdbeMemSetInt64(pMem, pOp->p1);
+ sqlite3VdbeMemSetInt64(pMem+1, pOp->p2);
+ sqlite3VdbeMemSetInt64(pMem+2, pOp->p3);
+ sqlite3VdbeMemSetStr(pMem+3, zP4, -1, SQLITE_UTF8, sqlite3_free);
+ p->nResColumn = 4;
}else{
- assert( pMem->z!=0 );
- pMem->n = sqlite3Strlen30(pMem->z);
- pMem->enc = SQLITE_UTF8;
- }
- pMem++;
-
- if( p->explain==1 ){
- if( sqlite3VdbeMemClearAndResize(pMem, 4) ){
- assert( p->db->mallocFailed );
- return SQLITE_ERROR;
- }
- pMem->flags = MEM_Str|MEM_Term;
- pMem->n = 2;
- sqlite3_snprintf(3, pMem->z, "%.2x", pOp->p5); /* P5 */
- pMem->enc = SQLITE_UTF8;
- pMem++;
-
+ sqlite3VdbeMemSetInt64(pMem+0, i);
+ sqlite3VdbeMemSetStr(pMem+1, (char*)sqlite3OpcodeName(pOp->opcode),
+ -1, SQLITE_UTF8, SQLITE_STATIC);
+ sqlite3VdbeMemSetInt64(pMem+2, pOp->p1);
+ sqlite3VdbeMemSetInt64(pMem+3, pOp->p2);
+ sqlite3VdbeMemSetInt64(pMem+4, pOp->p3);
+ /* pMem+5 for p4 is done last */
+ sqlite3VdbeMemSetInt64(pMem+6, pOp->p5);
#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS
- if( sqlite3VdbeMemClearAndResize(pMem, 500) ){
- assert( p->db->mallocFailed );
- return SQLITE_ERROR;
+ {
+ char *zCom = sqlite3VdbeDisplayComment(db, pOp, zP4);
+ sqlite3VdbeMemSetStr(pMem+7, zCom, -1, SQLITE_UTF8, sqlite3_free);
}
- pMem->flags = MEM_Str|MEM_Term;
- pMem->n = displayComment(pOp, zP4, pMem->z, 500);
- pMem->enc = SQLITE_UTF8;
#else
- pMem->flags = MEM_Null; /* Comment */
+ sqlite3VdbeMemSetNull(pMem+7);
#endif
+ sqlite3VdbeMemSetStr(pMem+5, zP4, -1, SQLITE_UTF8, sqlite3_free);
+ p->nResColumn = 8;
+ }
+ p->pResultSet = pMem;
+ if( db->mallocFailed ){
+ p->rc = SQLITE_NOMEM;
+ rc = SQLITE_ERROR;
+ }else{
+ p->rc = SQLITE_OK;
+ rc = SQLITE_ROW;
}
-
- p->nResColumn = 8 - 4*(p->explain-1);
- p->pResultSet = &p->aMem[1];
- p->rc = SQLITE_OK;
- rc = SQLITE_ROW;
}
}
return rc;
@@ -84104,11 +80065,11 @@ SQLITE_PRIVATE void sqlite3VdbeRewind(Vdbe *p){
** creating the virtual machine. This involves things such
** as allocating registers and initializing the program counter.
** After the VDBE has be prepped, it can be executed by one or more
-** calls to sqlite3VdbeExec().
+** calls to sqlite3VdbeExec().
**
** This function may be called exactly once on each virtual machine.
** After this routine is called the VM has been "packaged" and is ready
-** to run. After this routine is called, further calls to
+** to run. After this routine is called, further calls to
** sqlite3VdbeAddOp() functions are prohibited. This routine disconnects
** the Vdbe from the Parse object that helped generate it so that the
** the Vdbe becomes an independent entity and the Parse object can be
@@ -84140,7 +80101,7 @@ SQLITE_PRIVATE void sqlite3VdbeMakeReady(
nMem = pParse->nMem;
nCursor = pParse->nTab;
nArg = pParse->nMaxArg;
-
+
/* Each cursor uses a memory cell. The first cursor (cursor 0) can
** use aMem[0] which is not otherwise used by the VDBE program. Allocate
** space at the end of aMem[] for cursors 1 and greater.
@@ -84169,6 +80130,7 @@ SQLITE_PRIVATE void sqlite3VdbeMakeReady(
};
int iFirst, mx, i;
if( nMem<10 ) nMem = 10;
+ p->explain = pParse->explain;
if( pParse->explain==2 ){
sqlite3VdbeSetNumCols(p, 4);
iFirst = 8;
@@ -84186,10 +80148,10 @@ SQLITE_PRIVATE void sqlite3VdbeMakeReady(
p->expired = 0;
/* Memory for registers, parameters, cursor, etc, is allocated in one or two
- ** passes. On the first pass, we try to reuse unused memory at the
+ ** passes. On the first pass, we try to reuse unused memory at the
** end of the opcode array. If we are unable to satisfy all memory
** requirements by reusing the opcode array tail, then the second
- ** pass will fill in the remainder using a fresh memory allocation.
+ ** pass will fill in the remainder using a fresh memory allocation.
**
** This two-pass approach that reuses as much memory as possible from
** the leftover memory at the end of the opcode array. This can significantly
@@ -84219,7 +80181,6 @@ SQLITE_PRIVATE void sqlite3VdbeMakeReady(
p->pVList = pParse->pVList;
pParse->pVList = 0;
- p->explain = pParse->explain;
if( db->mallocFailed ){
p->nVar = 0;
p->nCursor = 0;
@@ -84239,7 +80200,7 @@ SQLITE_PRIVATE void sqlite3VdbeMakeReady(
}
/*
-** Close a VDBE cursor and release all the resources that cursor
+** Close a VDBE cursor and release all the resources that cursor
** happens to hold.
*/
SQLITE_PRIVATE void sqlite3VdbeFreeCursor(Vdbe *p, VdbeCursor *pCx){
@@ -84321,7 +80282,7 @@ SQLITE_PRIVATE int sqlite3VdbeFrameRestore(VdbeFrame *pFrame){
/*
** Close all cursors.
**
-** Also release any dynamic memory held by the VM in the Vdbe.aMem memory
+** Also release any dynamic memory held by the VM in the Vdbe.aMem memory
** cell array. This is necessary as the memory cell array may contain
** pointers to VdbeFrame objects, which may in turn contain pointers to
** open cursors.
@@ -84407,43 +80368,43 @@ SQLITE_PRIVATE int sqlite3VdbeSetColName(
** A read or write transaction may or may not be active on database handle
** db. If a transaction is active, commit it. If there is a
** write-transaction spanning more than one database file, this routine
-** takes care of the master journal trickery.
+** takes care of the super-journal trickery.
*/
static int vdbeCommit(sqlite3 *db, Vdbe *p){
int i;
int nTrans = 0; /* Number of databases with an active write-transaction
** that are candidates for a two-phase commit using a
- ** master-journal */
+ ** super-journal */
int rc = SQLITE_OK;
int needXcommit = 0;
#ifdef SQLITE_OMIT_VIRTUALTABLE
- /* With this option, sqlite3VtabSync() is defined to be simply
- ** SQLITE_OK so p is not used.
+ /* With this option, sqlite3VtabSync() is defined to be simply
+ ** SQLITE_OK so p is not used.
*/
UNUSED_PARAMETER(p);
#endif
/* Before doing anything else, call the xSync() callback for any
** virtual module tables written in this transaction. This has to
- ** be done before determining whether a master journal file is
+ ** be done before determining whether a super-journal file is
** required, as an xSync() callback may add an attached database
** to the transaction.
*/
rc = sqlite3VtabSync(db, p);
/* This loop determines (a) if the commit hook should be invoked and
- ** (b) how many database files have open write transactions, not
- ** including the temp database. (b) is important because if more than
- ** one database file has an open write transaction, a master journal
+ ** (b) how many database files have open write transactions, not
+ ** including the temp database. (b) is important because if more than
+ ** one database file has an open write transaction, a super-journal
** file is required for an atomic commit.
- */
- for(i=0; rc==SQLITE_OK && inDb; i++){
+ */
+ for(i=0; rc==SQLITE_OK && inDb; i++){
Btree *pBt = db->aDb[i].pBt;
if( sqlite3BtreeIsInTrans(pBt) ){
- /* Whether or not a database might need a master journal depends upon
+ /* Whether or not a database might need a super-journal depends upon
** its journal mode (among other things). This matrix determines which
- ** journal modes use a master journal and which do not */
+ ** journal modes use a super-journal and which do not */
static const u8 aMJNeeded[] = {
/* DELETE */ 1,
/* PERSIST */ 1,
@@ -84459,7 +80420,7 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){
if( db->aDb[i].safety_level!=PAGER_SYNCHRONOUS_OFF
&& aMJNeeded[sqlite3PagerGetJournalMode(pPager)]
&& sqlite3PagerIsMemdb(pPager)==0
- ){
+ ){
assert( i!=1 );
nTrans++;
}
@@ -84481,11 +80442,11 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){
/* The simple case - no more than one database file (not counting the
** TEMP database) has a transaction active. There is no need for the
- ** master-journal.
+ ** super-journal.
**
** If the return value of sqlite3BtreeGetFilename() is a zero length
- ** string, it means the main database is :memory: or a temp file. In
- ** that case we do not support atomic multi-file commits, so use the
+ ** string, it means the main database is :memory: or a temp file. In
+ ** that case we do not support atomic multi-file commits, so use the
** simple case then too.
*/
if( 0==sqlite3Strlen30(sqlite3BtreeGetFilename(db->aDb[0].pBt))
@@ -84498,7 +80459,7 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){
}
}
- /* Do the commit only if all databases successfully complete phase 1.
+ /* Do the commit only if all databases successfully complete phase 1.
** If one of the BtreeCommitPhaseOne() calls fails, this indicates an
** IO error while deleting or truncating a journal file. It is unlikely,
** but could happen. In this case abandon processing and return the error.
@@ -84515,61 +80476,62 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){
}
/* The complex case - There is a multi-file write-transaction active.
- ** This requires a master journal file to ensure the transaction is
+ ** This requires a super-journal file to ensure the transaction is
** committed atomically.
*/
#ifndef SQLITE_OMIT_DISKIO
else{
sqlite3_vfs *pVfs = db->pVfs;
- char *zMaster = 0; /* File-name for the master journal */
+ char *zSuper = 0; /* File-name for the super-journal */
char const *zMainFile = sqlite3BtreeGetFilename(db->aDb[0].pBt);
- sqlite3_file *pMaster = 0;
+ sqlite3_file *pSuperJrnl = 0;
i64 offset = 0;
int res;
int retryCount = 0;
int nMainFile;
- /* Select a master journal file name */
+ /* Select a super-journal file name */
nMainFile = sqlite3Strlen30(zMainFile);
- zMaster = sqlite3MPrintf(db, "%s-mjXXXXXX9XXz%c%c", zMainFile, 0, 0);
- if( zMaster==0 ) return SQLITE_NOMEM_BKPT;
+ zSuper = sqlite3MPrintf(db, "%.4c%s%.16c", 0,zMainFile,0);
+ if( zSuper==0 ) return SQLITE_NOMEM_BKPT;
+ zSuper += 4;
do {
u32 iRandom;
if( retryCount ){
if( retryCount>100 ){
- sqlite3_log(SQLITE_FULL, "MJ delete: %s", zMaster);
- sqlite3OsDelete(pVfs, zMaster, 0);
+ sqlite3_log(SQLITE_FULL, "MJ delete: %s", zSuper);
+ sqlite3OsDelete(pVfs, zSuper, 0);
break;
}else if( retryCount==1 ){
- sqlite3_log(SQLITE_FULL, "MJ collide: %s", zMaster);
+ sqlite3_log(SQLITE_FULL, "MJ collide: %s", zSuper);
}
}
retryCount++;
sqlite3_randomness(sizeof(iRandom), &iRandom);
- sqlite3_snprintf(13, &zMaster[nMainFile], "-mj%06X9%02X",
+ sqlite3_snprintf(13, &zSuper[nMainFile], "-mj%06X9%02X",
(iRandom>>8)&0xffffff, iRandom&0xff);
- /* The antipenultimate character of the master journal name must
+ /* The antipenultimate character of the super-journal name must
** be "9" to avoid name collisions when using 8+3 filenames. */
- assert( zMaster[sqlite3Strlen30(zMaster)-3]=='9' );
- sqlite3FileSuffix3(zMainFile, zMaster);
- rc = sqlite3OsAccess(pVfs, zMaster, SQLITE_ACCESS_EXISTS, &res);
+ assert( zSuper[sqlite3Strlen30(zSuper)-3]=='9' );
+ sqlite3FileSuffix3(zMainFile, zSuper);
+ rc = sqlite3OsAccess(pVfs, zSuper, SQLITE_ACCESS_EXISTS, &res);
}while( rc==SQLITE_OK && res );
if( rc==SQLITE_OK ){
- /* Open the master journal. */
- rc = sqlite3OsOpenMalloc(pVfs, zMaster, &pMaster,
+ /* Open the super-journal. */
+ rc = sqlite3OsOpenMalloc(pVfs, zSuper, &pSuperJrnl,
SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE|
- SQLITE_OPEN_EXCLUSIVE|SQLITE_OPEN_MASTER_JOURNAL, 0
+ SQLITE_OPEN_EXCLUSIVE|SQLITE_OPEN_SUPER_JOURNAL, 0
);
}
if( rc!=SQLITE_OK ){
- sqlite3DbFree(db, zMaster);
+ sqlite3DbFree(db, zSuper-4);
return rc;
}
-
+
/* Write the name of each database file in the transaction into the new
- ** master journal file. If an error occurs at this point close
- ** and delete the master journal file. All the individual journal files
- ** still have 'null' as the master journal pointer, so they will roll
+ ** super-journal file. If an error occurs at this point close
+ ** and delete the super-journal file. All the individual journal files
+ ** still have 'null' as the super-journal pointer, so they will roll
** back independently if a failure occurs.
*/
for(i=0; inDb; i++){
@@ -84580,59 +80542,59 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){
continue; /* Ignore TEMP and :memory: databases */
}
assert( zFile[0]!=0 );
- rc = sqlite3OsWrite(pMaster, zFile, sqlite3Strlen30(zFile)+1, offset);
+ rc = sqlite3OsWrite(pSuperJrnl, zFile, sqlite3Strlen30(zFile)+1,offset);
offset += sqlite3Strlen30(zFile)+1;
if( rc!=SQLITE_OK ){
- sqlite3OsCloseFree(pMaster);
- sqlite3OsDelete(pVfs, zMaster, 0);
- sqlite3DbFree(db, zMaster);
+ sqlite3OsCloseFree(pSuperJrnl);
+ sqlite3OsDelete(pVfs, zSuper, 0);
+ sqlite3DbFree(db, zSuper-4);
return rc;
}
}
}
- /* Sync the master journal file. If the IOCAP_SEQUENTIAL device
+ /* Sync the super-journal file. If the IOCAP_SEQUENTIAL device
** flag is set this is not required.
*/
- if( 0==(sqlite3OsDeviceCharacteristics(pMaster)&SQLITE_IOCAP_SEQUENTIAL)
- && SQLITE_OK!=(rc = sqlite3OsSync(pMaster, SQLITE_SYNC_NORMAL))
+ if( 0==(sqlite3OsDeviceCharacteristics(pSuperJrnl)&SQLITE_IOCAP_SEQUENTIAL)
+ && SQLITE_OK!=(rc = sqlite3OsSync(pSuperJrnl, SQLITE_SYNC_NORMAL))
){
- sqlite3OsCloseFree(pMaster);
- sqlite3OsDelete(pVfs, zMaster, 0);
- sqlite3DbFree(db, zMaster);
+ sqlite3OsCloseFree(pSuperJrnl);
+ sqlite3OsDelete(pVfs, zSuper, 0);
+ sqlite3DbFree(db, zSuper-4);
return rc;
}
/* Sync all the db files involved in the transaction. The same call
- ** sets the master journal pointer in each individual journal. If
- ** an error occurs here, do not delete the master journal file.
+ ** sets the super-journal pointer in each individual journal. If
+ ** an error occurs here, do not delete the super-journal file.
**
** If the error occurs during the first call to
** sqlite3BtreeCommitPhaseOne(), then there is a chance that the
- ** master journal file will be orphaned. But we cannot delete it,
- ** in case the master journal file name was written into the journal
+ ** super-journal file will be orphaned. But we cannot delete it,
+ ** in case the super-journal file name was written into the journal
** file before the failure occurred.
*/
- for(i=0; rc==SQLITE_OK && inDb; i++){
+ for(i=0; rc==SQLITE_OK && inDb; i++){
Btree *pBt = db->aDb[i].pBt;
if( pBt ){
- rc = sqlite3BtreeCommitPhaseOne(pBt, zMaster);
+ rc = sqlite3BtreeCommitPhaseOne(pBt, zSuper);
}
}
- sqlite3OsCloseFree(pMaster);
+ sqlite3OsCloseFree(pSuperJrnl);
assert( rc!=SQLITE_BUSY );
if( rc!=SQLITE_OK ){
- sqlite3DbFree(db, zMaster);
+ sqlite3DbFree(db, zSuper-4);
return rc;
}
- /* Delete the master journal file. This commits the transaction. After
+ /* Delete the super-journal file. This commits the transaction. After
** doing this the directory is synced again before any individual
** transaction files are deleted.
*/
- rc = sqlite3OsDelete(pVfs, zMaster, 1);
- sqlite3DbFree(db, zMaster);
- zMaster = 0;
+ rc = sqlite3OsDelete(pVfs, zSuper, 1);
+ sqlite3DbFree(db, zSuper-4);
+ zSuper = 0;
if( rc ){
return rc;
}
@@ -84646,7 +80608,7 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){
*/
disable_simulated_io_errors();
sqlite3BeginBenignMalloc();
- for(i=0; inDb; i++){
+ for(i=0; inDb; i++){
Btree *pBt = db->aDb[i].pBt;
if( pBt ){
sqlite3BtreeCommitPhaseTwo(pBt, 1);
@@ -84662,7 +80624,7 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){
return rc;
}
-/*
+/*
** This routine checks that the sqlite3.nVdbeActive count variable
** matches the number of vdbe's in the list sqlite3.pVdbe that are
** currently active. An assertion fails if the two counts do not match.
@@ -84698,10 +80660,10 @@ static void checkActiveVdbeCnt(sqlite3 *db){
** If the Vdbe passed as the first argument opened a statement-transaction,
** close it now. Argument eOp must be either SAVEPOINT_ROLLBACK or
** SAVEPOINT_RELEASE. If it is SAVEPOINT_ROLLBACK, then the statement
-** transaction is rolled back. If eOp is SAVEPOINT_RELEASE, then the
+** transaction is rolled back. If eOp is SAVEPOINT_RELEASE, then the
** statement transaction is committed.
**
-** If an IO error occurs, an SQLITE_IOERR_XXX error code is returned.
+** If an IO error occurs, an SQLITE_IOERR_XXX error code is returned.
** Otherwise SQLITE_OK.
*/
static SQLITE_NOINLINE int vdbeCloseStatement(Vdbe *p, int eOp){
@@ -84714,7 +80676,7 @@ static SQLITE_NOINLINE int vdbeCloseStatement(Vdbe *p, int eOp){
assert( db->nStatement>0 );
assert( p->iStatement==(db->nStatement+db->nSavepoint) );
- for(i=0; inDb; i++){
+ for(i=0; inDb; i++){
int rc2 = SQLITE_OK;
Btree *pBt = db->aDb[i].pBt;
if( pBt ){
@@ -84741,8 +80703,8 @@ static SQLITE_NOINLINE int vdbeCloseStatement(Vdbe *p, int eOp){
}
}
- /* If the statement transaction is being rolled back, also restore the
- ** database handles deferred constraint counter to the value it had when
+ /* If the statement transaction is being rolled back, also restore the
+ ** database handles deferred constraint counter to the value it had when
** the statement transaction was opened. */
if( eOp==SAVEPOINT_ROLLBACK ){
db->nDeferredCons = p->nStmtDefCons;
@@ -84759,20 +80721,20 @@ SQLITE_PRIVATE int sqlite3VdbeCloseStatement(Vdbe *p, int eOp){
/*
-** This function is called when a transaction opened by the database
-** handle associated with the VM passed as an argument is about to be
+** This function is called when a transaction opened by the database
+** handle associated with the VM passed as an argument is about to be
** committed. If there are outstanding deferred foreign key constraint
** violations, return SQLITE_ERROR. Otherwise, SQLITE_OK.
**
-** If there are outstanding FK violations and this function returns
+** If there are outstanding FK violations and this function returns
** SQLITE_ERROR, set the result of the VM to SQLITE_CONSTRAINT_FOREIGNKEY
** and write an error message to it. Then return SQLITE_ERROR.
*/
#ifndef SQLITE_OMIT_FOREIGN_KEY
SQLITE_PRIVATE int sqlite3VdbeCheckFk(Vdbe *p, int deferred){
sqlite3 *db = p->db;
- if( (deferred && (db->nDeferredCons+db->nDeferredImmCons)>0)
- || (!deferred && p->nFkConstraint>0)
+ if( (deferred && (db->nDeferredCons+db->nDeferredImmCons)>0)
+ || (!deferred && p->nFkConstraint>0)
){
p->rc = SQLITE_CONSTRAINT_FOREIGNKEY;
p->errorAction = OE_Abort;
@@ -84802,7 +80764,7 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){
/* This function contains the logic that determines if a statement or
** transaction will be committed or rolled back as a result of the
- ** execution of this virtual machine.
+ ** execution of this virtual machine.
**
** If any of the following errors occur:
**
@@ -84840,16 +80802,16 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){
isSpecialError = mrc==SQLITE_NOMEM || mrc==SQLITE_IOERR
|| mrc==SQLITE_INTERRUPT || mrc==SQLITE_FULL;
if( isSpecialError ){
- /* If the query was read-only and the error code is SQLITE_INTERRUPT,
- ** no rollback is necessary. Otherwise, at least a savepoint
- ** transaction must be rolled back to restore the database to a
+ /* If the query was read-only and the error code is SQLITE_INTERRUPT,
+ ** no rollback is necessary. Otherwise, at least a savepoint
+ ** transaction must be rolled back to restore the database to a
** consistent state.
**
** Even if the statement is read-only, it is important to perform
- ** a statement or transaction rollback operation. If the error
+ ** a statement or transaction rollback operation. If the error
** occurred while writing to the journal, sub-journal or database
** file as part of an effort to free up cache space (see function
- ** pagerStress() in pager.c), the rollback is required to restore
+ ** pagerStress() in pager.c), the rollback is required to restore
** the pager to a consistent state.
*/
if( !p->readOnly || mrc!=SQLITE_INTERRUPT ){
@@ -84871,16 +80833,16 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){
if( p->rc==SQLITE_OK || (p->errorAction==OE_Fail && !isSpecialError) ){
sqlite3VdbeCheckFk(p, 0);
}
-
- /* If the auto-commit flag is set and this is the only active writer
- ** VM, then we do either a commit or rollback of the current transaction.
+
+ /* If the auto-commit flag is set and this is the only active writer
+ ** VM, then we do either a commit or rollback of the current transaction.
**
- ** Note: This block also runs if one of the special errors handled
- ** above has occurred.
+ ** Note: This block also runs if one of the special errors handled
+ ** above has occurred.
*/
- if( !sqlite3VtabInSync(db)
- && db->autoCommit
- && db->nVdbeWrite==(p->readOnly==0)
+ if( !sqlite3VtabInSync(db)
+ && db->autoCommit
+ && db->nVdbeWrite==(p->readOnly==0)
){
if( p->rc==SQLITE_OK || (p->errorAction==OE_Fail && !isSpecialError) ){
rc = sqlite3VdbeCheckFk(p, 1);
@@ -84890,10 +80852,10 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){
return SQLITE_ERROR;
}
rc = SQLITE_CONSTRAINT_FOREIGNKEY;
- }else{
- /* The auto-commit flag is true, the vdbe program was successful
+ }else{
+ /* The auto-commit flag is true, the vdbe program was successful
** or hit an 'OR FAIL' constraint and there are no deferred foreign
- ** key constraints to hold up the transaction. This means a commit
+ ** key constraints to hold up the transaction. This means a commit
** is required. */
rc = vdbeCommit(db, p);
}
@@ -84927,7 +80889,7 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){
p->nChange = 0;
}
}
-
+
/* If eStatementOp is non-zero, then a statement transaction needs to
** be committed or rolled back. Call sqlite3VdbeCloseStatement() to
** do so. If this operation returns an error, and the current statement
@@ -84948,9 +80910,9 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){
p->nChange = 0;
}
}
-
+
/* If this was an INSERT, UPDATE or DELETE and no statement transaction
- ** has been rolled back, update the database connection change-counter.
+ ** has been rolled back, update the database connection change-counter.
*/
if( p->changeCntOn ){
if( eStatementOp!=SAVEPOINT_ROLLBACK ){
@@ -84981,7 +80943,7 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){
}
/* If the auto-commit flag is set to true, then any locks that were held
- ** by connection db have now been released. Call sqlite3ConnectionUnlocked()
+ ** by connection db have now been released. Call sqlite3ConnectionUnlocked()
** to invoke any required unlock-notify callbacks.
*/
if( db->autoCommit ){
@@ -85003,7 +80965,7 @@ SQLITE_PRIVATE void sqlite3VdbeResetStepResult(Vdbe *p){
/*
** Copy the error code and error message belonging to the VDBE passed
-** as the first argument to its database handle (so that they will be
+** as the first argument to its database handle (so that they will be
** returned by calls to sqlite3_errcode() and sqlite3_errmsg()).
**
** This function does not clear the VDBE error code or message, just
@@ -85028,7 +80990,7 @@ SQLITE_PRIVATE int sqlite3VdbeTransferError(Vdbe *p){
#ifdef SQLITE_ENABLE_SQLLOG
/*
-** If an SQLITE_CONFIG_SQLLOG hook is registered and the VM has been run,
+** If an SQLITE_CONFIG_SQLLOG hook is registered and the VM has been run,
** invoke it.
*/
static void vdbeInvokeSqllog(Vdbe *v){
@@ -85079,7 +81041,11 @@ SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe *p){
*/
if( p->pc>=0 ){
vdbeInvokeSqllog(p);
- sqlite3VdbeTransferError(p);
+ if( db->pErr || p->zErrMsg ){
+ sqlite3VdbeTransferError(p);
+ }else{
+ db->errCode = p->rc;
+ }
if( p->runOnlyOnce ) p->expired = 1;
}else if( p->rc && p->expired ){
/* The expired flag was set on the VDBE before the first call
@@ -85092,15 +81058,17 @@ SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe *p){
/* Reset register contents and reclaim error message memory.
*/
#ifdef SQLITE_DEBUG
- /* Execute assert() statements to ensure that the Vdbe.apCsr[] and
+ /* Execute assert() statements to ensure that the Vdbe.apCsr[] and
** Vdbe.aMem[] arrays have already been cleaned up. */
if( p->apCsr ) for(i=0; inCursor; i++) assert( p->apCsr[i]==0 );
if( p->aMem ){
for(i=0; inMem; i++) assert( p->aMem[i].flags==MEM_Undefined );
}
#endif
- sqlite3DbFree(db, p->zErrMsg);
- p->zErrMsg = 0;
+ if( p->zErrMsg ){
+ sqlite3DbFree(db, p->zErrMsg);
+ p->zErrMsg = 0;
+ }
p->pResultSet = 0;
#ifdef SQLITE_DEBUG
p->nWrite = 0;
@@ -85144,7 +81112,7 @@ SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe *p){
p->magic = VDBE_MAGIC_RESET;
return p->rc & db->errMask;
}
-
+
/*
** Clean up and delete a VDBE after execution. Return an integer which is
** the result code. Write any error message text into *pzErrMsg.
@@ -85165,8 +81133,8 @@ SQLITE_PRIVATE int sqlite3VdbeFinalize(Vdbe *p){
** the first argument.
**
** Or, if iOp is greater than or equal to zero, then the destructor is
-** only invoked for those auxiliary data pointers created by the user
-** function invoked by the OP_Function opcode at instruction iOp of
+** only invoked for those auxiliary data pointers created by the user
+** function invoked by the OP_Function opcode at instruction iOp of
** VM pVdbe, and only then if:
**
** * the associated function parameter is the 32nd or later (counting
@@ -85270,7 +81238,7 @@ SQLITE_PRIVATE void sqlite3VdbeDelete(Vdbe *p){
** carried out. Seek the cursor now. If an error occurs, return
** the appropriate error code.
*/
-static int SQLITE_NOINLINE handleDeferredMoveto(VdbeCursor *p){
+SQLITE_PRIVATE int SQLITE_NOINLINE sqlite3VdbeFinishMoveto(VdbeCursor *p){
int res, rc;
#ifdef SQLITE_TEST
extern int sqlite3_search_count;
@@ -85332,17 +81300,17 @@ SQLITE_PRIVATE int sqlite3VdbeCursorRestore(VdbeCursor *p){
** If the cursor is already pointing to the correct row and that row has
** not been deleted out from under the cursor, then this routine is a no-op.
*/
-SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor **pp, int *piCol){
+SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor **pp, u32 *piCol){
VdbeCursor *p = *pp;
assert( p->eCurType==CURTYPE_BTREE || p->eCurType==CURTYPE_PSEUDO );
if( p->deferredMoveto ){
- int iMap;
- if( p->aAltMap && (iMap = p->aAltMap[1+*piCol])>0 ){
+ u32 iMap;
+ if( p->aAltMap && (iMap = p->aAltMap[1+*piCol])>0 && !p->nullRow ){
*pp = p->pAltCursor;
*piCol = iMap - 1;
return SQLITE_OK;
}
- return handleDeferredMoveto(p);
+ return sqlite3VdbeFinishMoveto(p);
}
if( sqlite3BtreeCursorHasMoved(p->uc.pCursor) ){
return handleMovedCursor(p);
@@ -85469,7 +81437,7 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialType(Mem *pMem, int file_format, u32 *pLen){
** The sizes for serial types less than 128
*/
static const u8 sqlite3SmallTypeSizes[] = {
- /* 0 1 2 3 4 5 6 7 8 9 */
+ /* 0 1 2 3 4 5 6 7 8 9 */
/* 0 */ 0, 1, 2, 3, 4, 6, 8, 8, 0, 0,
/* 10 */ 0, 0, 0, 0, 1, 1, 2, 2, 3, 3,
/* 20 */ 4, 4, 5, 5, 6, 6, 7, 7, 8, 8,
@@ -85492,19 +81460,19 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialTypeLen(u32 serial_type){
if( serial_type>=128 ){
return (serial_type-12)/2;
}else{
- assert( serial_type<12
+ assert( serial_type<12
|| sqlite3SmallTypeSizes[serial_type]==(serial_type - 12)/2 );
return sqlite3SmallTypeSizes[serial_type];
}
}
SQLITE_PRIVATE u8 sqlite3VdbeOneByteSerialTypeLen(u8 serial_type){
assert( serial_type<128 );
- return sqlite3SmallTypeSizes[serial_type];
+ return sqlite3SmallTypeSizes[serial_type];
}
/*
-** If we are on an architecture with mixed-endian floating
-** points (ex: ARM7) then swap the lower 4 bytes with the
+** If we are on an architecture with mixed-endian floating
+** points (ex: ARM7) then swap the lower 4 bytes with the
** upper 4 bytes. Return the result.
**
** For most architectures, this is a no-op.
@@ -85526,7 +81494,7 @@ SQLITE_PRIVATE u8 sqlite3VdbeOneByteSerialTypeLen(u8 serial_type){
** (2007-08-30) Frank van Vugt has studied this problem closely
** and has send his findings to the SQLite developers. Frank
** writes that some Linux kernels offer floating point hardware
-** emulation that uses only 32-bit mantissas instead of a full
+** emulation that uses only 32-bit mantissas instead of a full
** 48-bits as required by the IEEE standard. (This is the
** CONFIG_FPE_FASTFPE option.) On such systems, floating point
** byte swapping becomes very complicated. To avoid problems,
@@ -85556,7 +81524,7 @@ static u64 floatSwap(u64 in){
#endif
/*
-** Write the serialized data blob for the value stored in pMem into
+** Write the serialized data blob for the value stored in pMem into
** buf. It is assumed that the caller has allocated sufficient space.
** Return the number of bytes written.
**
@@ -85567,7 +81535,7 @@ static u64 floatSwap(u64 in){
** Return the number of bytes actually written into buf[]. The number
** of bytes in the zero-filled tail is included in the return value only
** if those bytes were zeroed in buf[].
-*/
+*/
SQLITE_PRIVATE u32 sqlite3VdbeSerialPut(u8 *buf, Mem *pMem, u32 serial_type){
u32 len;
@@ -85621,7 +81589,7 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialPut(u8 *buf, Mem *pMem, u32 serial_type){
** The few cases that require local variables are broken out into a separate
** routine so that in most cases the overhead of moving the stack pointer
** is avoided.
-*/
+*/
static u32 serialGet(
const unsigned char *buf, /* Buffer to deserialize from */
u32 serial_type, /* Serial type to deserialize */
@@ -85705,7 +81673,7 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialGet(
/* EVIDENCE-OF: R-01849-26079 Value is a big-endian 32-bit
** twos-complement integer. */
pMem->u.i = FOUR_BYTE_INT(buf);
-#ifdef __HP_cc
+#ifdef __HP_cc
/* Work around a sign-extension bug in the HP compiler for HP/UX */
if( buf[0]&0x80 ) pMem->u.i |= 0xffffffff80000000LL;
#endif
@@ -85757,7 +81725,7 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialGet(
** The space is either allocated using sqlite3DbMallocRaw() or from within
** the unaligned buffer passed via the second and third arguments (presumably
** stack space). If the former, then *ppFree is set to a pointer that should
-** be eventually freed by the caller using sqlite3DbFree(). Or, if the
+** be eventually freed by the caller using sqlite3DbFree(). Or, if the
** allocation comes from the pSpace/szSpace buffer, *ppFree is set to NULL
** before returning.
**
@@ -85779,10 +81747,10 @@ SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeAllocUnpackedRecord(
}
/*
-** Given the nKey-byte encoding of a record in pKey[], populate the
+** Given the nKey-byte encoding of a record in pKey[], populate the
** UnpackedRecord structure indicated by the fourth argument with the
** contents of the decoded record.
-*/
+*/
SQLITE_PRIVATE void sqlite3VdbeRecordUnpack(
KeyInfo *pKeyInfo, /* Information about the record format */
int nKey, /* Size of the binary record */
@@ -85790,7 +81758,7 @@ SQLITE_PRIVATE void sqlite3VdbeRecordUnpack(
UnpackedRecord *p /* Populate this structure before returning. */
){
const unsigned char *aKey = (const unsigned char *)pKey;
- u32 d;
+ u32 d;
u32 idx; /* Offset in aKey[] to read from */
u16 u; /* Unsigned loop counter */
u32 szHdr;
@@ -85816,7 +81784,7 @@ SQLITE_PRIVATE void sqlite3VdbeRecordUnpack(
}
if( d>(u32)nKey && u ){
assert( CORRUPT_DB );
- /* In a corrupt record entry, the last pMem might have been set up using
+ /* In a corrupt record entry, the last pMem might have been set up using
** uninitialized memory. Overwrite its value with NULL, to prevent
** warnings from MSAN. */
sqlite3VdbeMemSetNull(pMem-1);
@@ -85860,13 +81828,13 @@ static int vdbeRecordCompareDebug(
/* Compilers may complain that mem1.u.i is potentially uninitialized.
** We could initialize it, as shown here, to silence those complaints.
- ** But in fact, mem1.u.i will never actually be used uninitialized, and doing
+ ** But in fact, mem1.u.i will never actually be used uninitialized, and doing
** the unnecessary initialization has a measurable negative performance
** impact, since this routine is a very high runner. And so, we choose
** to ignore the compiler warnings and leave this variable uninitialized.
*/
/* mem1.u.i = 0; // not needed, here to silence compiler warning */
-
+
idx1 = getVarint32(aKey1, szHdr1);
if( szHdr1>98307 ) return SQLITE_CORRUPT;
d1 = szHdr1;
@@ -85887,7 +81855,7 @@ static int vdbeRecordCompareDebug(
** sqlite3VdbeSerialTypeLen() in the common case.
*/
if( d1+(u64)serial_type1+2>(u64)nKey1
- && d1+(u64)sqlite3VdbeSerialTypeLen(serial_type1)>(u64)nKey1
+ && d1+(u64)sqlite3VdbeSerialTypeLen(serial_type1)>(u64)nKey1
){
break;
}
@@ -85903,7 +81871,7 @@ static int vdbeRecordCompareDebug(
if( rc!=0 ){
assert( mem1.szMalloc==0 ); /* See comment below */
if( (pKeyInfo->aSortFlags[i] & KEYINFO_ORDER_BIGNULL)
- && ((mem1.flags & MEM_Null) || (pPKey2->aMem[i].flags & MEM_Null))
+ && ((mem1.flags & MEM_Null) || (pPKey2->aMem[i].flags & MEM_Null))
){
rc = -rc;
}
@@ -85949,7 +81917,7 @@ debugCompareEnd:
** incorrectly.
*/
static void vdbeAssertFieldCountWithinLimits(
- int nKey, const void *pKey, /* The record to verify */
+ int nKey, const void *pKey, /* The record to verify */
const KeyInfo *pKeyInfo /* Compare size with this KeyInfo */
){
int nField = 0;
@@ -85975,7 +81943,7 @@ static void vdbeAssertFieldCountWithinLimits(
/*
** Both *pMem1 and *pMem2 contain string values. Compare the two values
** using the collation sequence pColl. As usual, return a negative , zero
-** or positive value if *pMem1 is less than, equal to or greater than
+** or positive value if *pMem1 is less than, equal to or greater than
** *pMem2, respectively. Similar in spirit to "rc = (*pMem1) - (*pMem2);".
*/
static int vdbeCompareMemString(
@@ -86099,7 +82067,7 @@ SQLITE_PRIVATE int sqlite3MemCompare(const Mem *pMem1, const Mem *pMem2, const C
f2 = pMem2->flags;
combined_flags = f1|f2;
assert( !sqlite3VdbeMemIsRowSet(pMem1) && !sqlite3VdbeMemIsRowSet(pMem2) );
-
+
/* If one value is NULL, it is less than the other. If both values
** are NULL, return 0.
*/
@@ -86162,7 +82130,7 @@ SQLITE_PRIVATE int sqlite3MemCompare(const Mem *pMem1, const Mem *pMem2, const C
}
assert( pMem1->enc==pMem2->enc || pMem1->db->mallocFailed );
- assert( pMem1->enc==SQLITE_UTF8 ||
+ assert( pMem1->enc==SQLITE_UTF8 ||
pMem1->enc==SQLITE_UTF16LE || pMem1->enc==SQLITE_UTF16BE );
/* The collation sequence must be defined at this point, even if
@@ -86177,7 +82145,7 @@ SQLITE_PRIVATE int sqlite3MemCompare(const Mem *pMem1, const Mem *pMem2, const C
/* If a NULL pointer was passed as the collate function, fall through
** to the blob case and use memcmp(). */
}
-
+
/* Both values must be blobs. Compare using memcmp(). */
return sqlite3BlobCompare(pMem1, pMem2);
}
@@ -86185,7 +82153,7 @@ SQLITE_PRIVATE int sqlite3MemCompare(const Mem *pMem1, const Mem *pMem2, const C
/*
** The first argument passed to this function is a serial-type that
-** corresponds to an integer - all values between 1 and 9 inclusive
+** corresponds to an integer - all values between 1 and 9 inclusive
** except 7. The second points to a buffer containing an integer value
** serialized according to serial_type. This function deserializes
** and returns the value.
@@ -86227,7 +82195,7 @@ static i64 vdbeRecordDecodeInt(u32 serial_type, const u8 *aKey){
/*
** This function compares the two table rows or index records
** specified by {nKey1, pKey1} and pPKey2. It returns a negative, zero
-** or positive integer if key1 is less than, equal to or
+** or positive integer if key1 is less than, equal to or
** greater than key2. The {nKey1, pKey1} key must be a blob
** created by the OP_MakeRecord opcode of the VDBE. The pPKey2
** key must be a parsed key such as obtained from
@@ -86236,12 +82204,12 @@ static i64 vdbeRecordDecodeInt(u32 serial_type, const u8 *aKey){
** If argument bSkip is non-zero, it is assumed that the caller has already
** determined that the first fields of the keys are equal.
**
-** Key1 and Key2 do not have to contain the same number of fields. If all
-** fields that appear in both keys are equal, then pPKey2->default_rc is
+** Key1 and Key2 do not have to contain the same number of fields. If all
+** fields that appear in both keys are equal, then pPKey2->default_rc is
** returned.
**
-** If database corruption is discovered, set pPKey2->errCode to
-** SQLITE_CORRUPT and return 0. If an OOM error is encountered,
+** If database corruption is discovered, set pPKey2->errCode to
+** SQLITE_CORRUPT and return 0. If an OOM error is encountered,
** pPKey2->errCode is set to SQLITE_NOMEM and, if it is not NULL, the
** malloc-failed flag set on database handle (pPKey2->pKeyInfo->db).
*/
@@ -86275,13 +82243,13 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip(
d1 = szHdr1;
i = 0;
}
- if( d1>(unsigned)nKey1 ){
+ if( d1>(unsigned)nKey1 ){
pPKey2->errCode = (u8)SQLITE_CORRUPT_BKPT;
return 0; /* Corruption */
}
VVA_ONLY( mem1.szMalloc = 0; ) /* Only needed by assert() statements */
- assert( pPKey2->pKeyInfo->nAllField>=pPKey2->nField
+ assert( pPKey2->pKeyInfo->nAllField>=pPKey2->nField
|| CORRUPT_DB );
assert( pPKey2->pKeyInfo->aSortFlags!=0 );
assert( pPKey2->pKeyInfo->nKeyField>0 );
@@ -86318,7 +82286,7 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip(
serial_type = aKey1[idx1];
if( serial_type>=10 ){
/* Serial types 12 or greater are strings and blobs (greater than
- ** numbers). Types 10 and 11 are currently "reserved for future
+ ** numbers). Types 10 and 11 are currently "reserved for future
** use", so it doesn't really matter what the results of comparing
** them to numberic values are. */
rc = +1;
@@ -86340,7 +82308,7 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip(
/* RHS is a string */
else if( pRhs->flags & MEM_Str ){
- getVarint32(&aKey1[idx1], serial_type);
+ getVarint32NR(&aKey1[idx1], serial_type);
testcase( serial_type==12 );
if( serial_type<12 ){
rc = -1;
@@ -86366,7 +82334,7 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip(
}else{
int nCmp = MIN(mem1.n, pRhs->n);
rc = memcmp(&aKey1[d1], pRhs->z, nCmp);
- if( rc==0 ) rc = mem1.n - pRhs->n;
+ if( rc==0 ) rc = mem1.n - pRhs->n;
}
}
}
@@ -86374,7 +82342,7 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip(
/* RHS is a blob */
else if( pRhs->flags & MEM_Blob ){
assert( (pRhs->flags & MEM_Zero)==0 || pRhs->n==0 );
- getVarint32(&aKey1[idx1], serial_type);
+ getVarint32NR(&aKey1[idx1], serial_type);
testcase( serial_type==12 );
if( serial_type<12 || (serial_type & 0x01) ){
rc = -1;
@@ -86435,8 +82403,8 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip(
/* rc==0 here means that one or both of the keys ran out of fields and
** all the fields up to that point were equal. Return the default_rc
** value. */
- assert( CORRUPT_DB
- || vdbeRecordCompareDebug(nKey1, pKey1, pPKey2, pPKey2->default_rc)
+ assert( CORRUPT_DB
+ || vdbeRecordCompareDebug(nKey1, pKey1, pPKey2, pPKey2->default_rc)
|| pPKey2->pKeyInfo->db->mallocFailed
);
pPKey2->eqSeen = 1;
@@ -86451,8 +82419,8 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompare(
/*
-** This function is an optimized version of sqlite3VdbeRecordCompare()
-** that (a) the first field of pPKey2 is an integer, and (b) the
+** This function is an optimized version of sqlite3VdbeRecordCompare()
+** that (a) the first field of pPKey2 is an integer, and (b) the
** size-of-header varint at the start of (pKey1/nKey1) fits in a single
** byte (i.e. is less than 128).
**
@@ -86507,7 +82475,7 @@ static int vdbeRecordCompareInt(
testcase( lhs<0 );
break;
}
- case 8:
+ case 8:
lhs = 0;
break;
case 9:
@@ -86515,11 +82483,11 @@ static int vdbeRecordCompareInt(
break;
/* This case could be removed without changing the results of running
- ** this code. Including it causes gcc to generate a faster switch
+ ** this code. Including it causes gcc to generate a faster switch
** statement (since the range of switch targets now starts at zero and
** is contiguous) but does not cause any duplicate code to be generated
- ** (as gcc is clever enough to combine the two like cases). Other
- ** compilers might be similar. */
+ ** (as gcc is clever enough to combine the two like cases). Other
+ ** compilers might be similar. */
case 0: case 7:
return sqlite3VdbeRecordCompare(nKey1, pKey1, pPKey2);
@@ -86533,7 +82501,7 @@ static int vdbeRecordCompareInt(
}else if( vr2;
}else if( pPKey2->nField>1 ){
- /* The first fields of the two keys are equal. Compare the trailing
+ /* The first fields of the two keys are equal. Compare the trailing
** fields. */
res = sqlite3VdbeRecordCompareWithSkip(nKey1, pKey1, pPKey2, 1);
}else{
@@ -86548,9 +82516,9 @@ static int vdbeRecordCompareInt(
}
/*
-** This function is an optimized version of sqlite3VdbeRecordCompare()
+** This function is an optimized version of sqlite3VdbeRecordCompare()
** that (a) the first field of pPKey2 is a string, that (b) the first field
-** uses the collation sequence BINARY and (c) that the size-of-header varint
+** uses the collation sequence BINARY and (c) that the size-of-header varint
** at the start of (pKey1/nKey1) fits in a single byte.
*/
static int vdbeRecordCompareString(
@@ -86563,10 +82531,13 @@ static int vdbeRecordCompareString(
assert( pPKey2->aMem[0].flags & MEM_Str );
vdbeAssertFieldCountWithinLimits(nKey1, pKey1, pPKey2->pKeyInfo);
- getVarint32(&aKey1[1], serial_type);
+ serial_type = (u8)(aKey1[1]);
+ if( serial_type >= 0x80 ){
+ sqlite3GetVarint32(&aKey1[1], (u32*)&serial_type);
+ }
if( serial_type<12 ){
res = pPKey2->r1; /* (pKey1/nKey1) is a number or a null */
- }else if( !(serial_type & 0x01) ){
+ }else if( !(serial_type & 0x01) ){
res = pPKey2->r2; /* (pKey1/nKey1) is a blob */
}else{
int nCmp;
@@ -86618,7 +82589,7 @@ SQLITE_PRIVATE RecordCompare sqlite3VdbeFindCompare(UnpackedRecord *p){
/* varintRecordCompareInt() and varintRecordCompareString() both assume
** that the size-of-header varint that occurs at the start of each record
** fits in a single byte (i.e. is 127 or less). varintRecordCompareInt()
- ** also assumes that it is safe to overread a buffer by at least the
+ ** also assumes that it is safe to overread a buffer by at least the
** maximum possible legal header size plus 8 bytes. Because there is
** guaranteed to be at least 74 (but not 136) bytes of padding following each
** buffer passed to varintRecordCompareInt() this makes it convenient to
@@ -86676,7 +82647,7 @@ SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3 *db, BtCursor *pCur, i64 *rowid){
/* Get the size of the index entry. Only indices entries of less
** than 2GiB are support - anything large must be database corruption.
** Any corruption is detected in sqlite3BtreeParseCellPtr(), though, so
- ** this code can safely assume that nCellKey is 32-bits
+ ** this code can safely assume that nCellKey is 32-bits
*/
assert( sqlite3BtreeCursorIsValid(pCur) );
nCellKey = sqlite3BtreePayloadSize(pCur);
@@ -86684,13 +82655,13 @@ SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3 *db, BtCursor *pCur, i64 *rowid){
/* Read in the complete content of the index entry */
sqlite3VdbeMemInit(&m, db, 0);
- rc = sqlite3VdbeMemFromBtree(pCur, 0, (u32)nCellKey, &m);
+ rc = sqlite3VdbeMemFromBtreeZeroOffset(pCur, (u32)nCellKey, &m);
if( rc ){
return rc;
}
/* The index entry must begin with a header size */
- (void)getVarint32((u8*)m.z, szHdr);
+ getVarint32NR((u8*)m.z, szHdr);
testcase( szHdr==3 );
testcase( szHdr==m.n );
testcase( szHdr>0x7fffffff );
@@ -86701,7 +82672,7 @@ SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3 *db, BtCursor *pCur, i64 *rowid){
/* The last field of the index should be an integer - the ROWID.
** Verify that the last entry really is an integer. */
- (void)getVarint32((u8*)&m.z[szHdr-1], typeRowid);
+ getVarint32NR((u8*)&m.z[szHdr-1], typeRowid);
testcase( typeRowid==1 );
testcase( typeRowid==2 );
testcase( typeRowid==3 );
@@ -86741,7 +82712,7 @@ idx_rowid_corruption:
**
** pUnpacked is either created without a rowid or is truncated so that it
** omits the rowid at the end. The rowid at the end of the index entry
-** is ignored as well. Hence, this routine only compares the prefixes
+** is ignored as well. Hence, this routine only compares the prefixes
** of the keys prior to the final rowid, not the entire key.
*/
SQLITE_PRIVATE int sqlite3VdbeIdxKeyCompare(
@@ -86766,7 +82737,7 @@ SQLITE_PRIVATE int sqlite3VdbeIdxKeyCompare(
return SQLITE_CORRUPT_BKPT;
}
sqlite3VdbeMemInit(&m, db, 0);
- rc = sqlite3VdbeMemFromBtree(pCur, 0, (u32)nCellKey, &m);
+ rc = sqlite3VdbeMemFromBtreeZeroOffset(pCur, (u32)nCellKey, &m);
if( rc ){
return rc;
}
@@ -86777,7 +82748,7 @@ SQLITE_PRIVATE int sqlite3VdbeIdxKeyCompare(
/*
** This routine sets the value to be returned by subsequent calls to
-** sqlite3_changes() on the database handle 'db'.
+** sqlite3_changes() on the database handle 'db'.
*/
SQLITE_PRIVATE void sqlite3VdbeSetChanges(sqlite3 *db, int nChange){
assert( sqlite3_mutex_held(db->mutex) );
@@ -86834,7 +82805,7 @@ SQLITE_PRIVATE u8 sqlite3VdbePrepareFlags(Vdbe *v){
/*
** Return a pointer to an sqlite3_value structure containing the value bound
-** parameter iVar of VM v. Except, if the value is an SQL NULL, return
+** parameter iVar of VM v. Except, if the value is an SQL NULL, return
** 0 instead. Unless it is NULL, apply affinity aff (one of the SQLITE_AFF_*
** constants) to the value before returning it.
**
@@ -86926,7 +82897,7 @@ SQLITE_PRIVATE void sqlite3VtabImportErrmsg(Vdbe *p, sqlite3_vtab *pVtab){
#ifdef SQLITE_ENABLE_PREUPDATE_HOOK
/*
-** If the second argument is not NULL, release any allocations associated
+** If the second argument is not NULL, release any allocations associated
** with the memory cells in the p->aMem[] array. Also free the UnpackedRecord
** structure itself, using sqlite3DbFree().
**
@@ -86980,7 +82951,7 @@ SQLITE_PRIVATE void sqlite3VdbePreUpdateHook(
}
}
- assert( pCsr->nField==pTab->nCol
+ assert( pCsr->nField==pTab->nCol
|| (pCsr->nField==pTab->nCol+1 && op==SQLITE_DELETE && iReg==-1)
);
@@ -87089,7 +83060,7 @@ static SQLITE_NOINLINE void invokeProfileCallback(sqlite3 *db, Vdbe *p){
}
#endif
if( db->mTrace & SQLITE_TRACE_PROFILE ){
- db->xTrace(SQLITE_TRACE_PROFILE, db->pTraceArg, p, (void*)&iElapse);
+ db->trace.xV2(SQLITE_TRACE_PROFILE, db->pTraceArg, p, (void*)&iElapse);
}
p->startTime = 0;
}
@@ -87371,7 +83342,7 @@ SQLITE_API sqlite3_value *sqlite3_value_dup(const sqlite3_value *pOrig){
SQLITE_API void sqlite3_value_free(sqlite3_value *pOld){
sqlite3ValueFree(pOld);
}
-
+
/**************************** sqlite3_result_ *******************************
** The following routines are used by user-defined functions to specify
@@ -87412,9 +83383,9 @@ static int invokeValueDestructor(
return SQLITE_TOOBIG;
}
SQLITE_API void sqlite3_result_blob(
- sqlite3_context *pCtx,
- const void *z,
- int n,
+ sqlite3_context *pCtx,
+ const void *z,
+ int n,
void (*xDel)(void *)
){
assert( n>=0 );
@@ -87422,8 +83393,8 @@ SQLITE_API void sqlite3_result_blob(
setResultStrOrError(pCtx, z, n, 0, xDel);
}
SQLITE_API void sqlite3_result_blob64(
- sqlite3_context *pCtx,
- const void *z,
+ sqlite3_context *pCtx,
+ const void *z,
sqlite3_uint64 n,
void (*xDel)(void *)
){
@@ -87482,8 +83453,8 @@ SQLITE_API void sqlite3_result_subtype(sqlite3_context *pCtx, unsigned int eSubt
pOut->flags |= MEM_Subtype;
}
SQLITE_API void sqlite3_result_text(
- sqlite3_context *pCtx,
- const char *z,
+ sqlite3_context *pCtx,
+ const char *z,
int n,
void (*xDel)(void *)
){
@@ -87491,8 +83462,8 @@ SQLITE_API void sqlite3_result_text(
setResultStrOrError(pCtx, z, n, SQLITE_UTF8, xDel);
}
SQLITE_API void sqlite3_result_text64(
- sqlite3_context *pCtx,
- const char *z,
+ sqlite3_context *pCtx,
+ const char *z,
sqlite3_uint64 n,
void (*xDel)(void *),
unsigned char enc
@@ -87508,27 +83479,27 @@ SQLITE_API void sqlite3_result_text64(
}
#ifndef SQLITE_OMIT_UTF16
SQLITE_API void sqlite3_result_text16(
- sqlite3_context *pCtx,
- const void *z,
- int n,
+ sqlite3_context *pCtx,
+ const void *z,
+ int n,
void (*xDel)(void *)
){
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
setResultStrOrError(pCtx, z, n, SQLITE_UTF16NATIVE, xDel);
}
SQLITE_API void sqlite3_result_text16be(
- sqlite3_context *pCtx,
- const void *z,
- int n,
+ sqlite3_context *pCtx,
+ const void *z,
+ int n,
void (*xDel)(void *)
){
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
setResultStrOrError(pCtx, z, n, SQLITE_UTF16BE, xDel);
}
SQLITE_API void sqlite3_result_text16le(
- sqlite3_context *pCtx,
- const void *z,
- int n,
+ sqlite3_context *pCtx,
+ const void *z,
+ int n,
void (*xDel)(void *)
){
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
@@ -87558,7 +83529,7 @@ SQLITE_API void sqlite3_result_error_code(sqlite3_context *pCtx, int errCode){
if( pCtx->pVdbe ) pCtx->pVdbe->rcApp = errCode;
#endif
if( pCtx->pOut->flags & MEM_Null ){
- sqlite3VdbeMemSetStr(pCtx->pOut, sqlite3ErrStr(errCode), -1,
+ sqlite3VdbeMemSetStr(pCtx->pOut, sqlite3ErrStr(errCode), -1,
SQLITE_UTF8, SQLITE_STATIC);
}
}
@@ -87567,7 +83538,7 @@ SQLITE_API void sqlite3_result_error_code(sqlite3_context *pCtx, int errCode){
SQLITE_API void sqlite3_result_error_toobig(sqlite3_context *pCtx){
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
pCtx->isError = SQLITE_TOOBIG;
- sqlite3VdbeMemSetStr(pCtx->pOut, "string or blob too big", -1,
+ sqlite3VdbeMemSetStr(pCtx->pOut, "string or blob too big", -1,
SQLITE_UTF8, SQLITE_STATIC);
}
@@ -87584,7 +83555,7 @@ SQLITE_API void sqlite3_result_error_nomem(sqlite3_context *pCtx){
** a MEM_IntReal value. See the SQLITE_TESTCTRL_RESULT_INTREAL
** test-control.
*/
-SQLITE_PRIVATE void sqlite3ResultIntReal(sqlite3_context *pCtx){
+SQLITE_PRIVATE void sqlite3ResultIntReal(sqlite3_context *pCtx){
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
if( pCtx->pOut->flags & MEM_Int ){
pCtx->pOut->flags &= ~MEM_Int;
@@ -87595,7 +83566,7 @@ SQLITE_PRIVATE void sqlite3ResultIntReal(sqlite3_context *pCtx){
/*
-** This function is called after a transaction has been committed. It
+** This function is called after a transaction has been committed. It
** invokes callbacks registered with sqlite3_wal_hook() as required.
*/
static int doWalCallbacks(sqlite3 *db){
@@ -87624,7 +83595,7 @@ static int doWalCallbacks(sqlite3 *db){
** statement is completely executed or an error occurs.
**
** This routine implements the bulk of the logic behind the sqlite_step()
-** API. The only thing omitted is the automatic recompile if a
+** API. The only thing omitted is the automatic recompile if a
** schema change has occurred. That detail is handled by the
** outer sqlite3_step() wrapper procedure.
*/
@@ -87638,15 +83609,15 @@ static int sqlite3Step(Vdbe *p){
** sqlite3_step() after any error or after SQLITE_DONE. But beginning
** with version 3.7.0, we changed this so that sqlite3_reset() would
** be called automatically instead of throwing the SQLITE_MISUSE error.
- ** This "automatic-reset" change is not technically an incompatibility,
+ ** This "automatic-reset" change is not technically an incompatibility,
** since any application that receives an SQLITE_MISUSE is broken by
** definition.
**
** Nevertheless, some published applications that were originally written
- ** for version 3.6.23 or earlier do in fact depend on SQLITE_MISUSE
+ ** for version 3.6.23 or earlier do in fact depend on SQLITE_MISUSE
** returns, and those were broken by the automatic-reset change. As a
** a work-around, the SQLITE_OMIT_AUTORESET compile-time restores the
- ** legacy behavior of returning SQLITE_MISUSE for cases where the
+ ** legacy behavior of returning SQLITE_MISUSE for cases where the
** previous sqlite3_step() returned something other than a SQLITE_LOCKED
** or SQLITE_BUSY error.
*/
@@ -87671,6 +83642,13 @@ static int sqlite3Step(Vdbe *p){
if( p->pc<0 && p->expired ){
p->rc = SQLITE_SCHEMA;
rc = SQLITE_ERROR;
+ if( (p->prepFlags & SQLITE_PREPARE_SAVESQL)!=0 ){
+ /* If this statement was prepared using saved SQL and an
+ ** error has occurred, then return the error code in p->rc to the
+ ** caller. Set the error code in the database handle to the same value.
+ */
+ rc = sqlite3VdbeTransferError(p);
+ }
goto end_of_step;
}
if( p->pc<0 ){
@@ -87679,10 +83657,10 @@ static int sqlite3Step(Vdbe *p){
** from interrupting a statement that has not yet started.
*/
if( db->nVdbeActive==0 ){
- db->u1.isInterrupted = 0;
+ AtomicStore(&db->u1.isInterrupted, 0);
}
- assert( db->nVdbeWrite>0 || db->autoCommit==0
+ assert( db->nVdbeWrite>0 || db->autoCommit==0
|| (db->nDeferredCons==0 && db->nDeferredImmCons==0)
);
@@ -87726,35 +83704,27 @@ static int sqlite3Step(Vdbe *p){
if( p->rc!=SQLITE_OK ){
rc = SQLITE_ERROR;
}
+ }else if( rc!=SQLITE_DONE && (p->prepFlags & SQLITE_PREPARE_SAVESQL)!=0 ){
+ /* If this statement was prepared using saved SQL and an
+ ** error has occurred, then return the error code in p->rc to the
+ ** caller. Set the error code in the database handle to the same value.
+ */
+ rc = sqlite3VdbeTransferError(p);
}
}
db->errCode = rc;
if( SQLITE_NOMEM==sqlite3ApiExit(p->db, p->rc) ){
p->rc = SQLITE_NOMEM_BKPT;
+ if( (p->prepFlags & SQLITE_PREPARE_SAVESQL)!=0 ) rc = p->rc;
}
end_of_step:
- /* At this point local variable rc holds the value that should be
- ** returned if this statement was compiled using the legacy
- ** sqlite3_prepare() interface. According to the docs, this can only
- ** be one of the values in the first assert() below. Variable p->rc
- ** contains the value that would be returned if sqlite3_finalize()
- ** were called on statement p.
- */
- assert( rc==SQLITE_ROW || rc==SQLITE_DONE || rc==SQLITE_ERROR
+ /* There are only a limited number of result codes allowed from the
+ ** statements prepared using the legacy sqlite3_prepare() interface */
+ assert( (p->prepFlags & SQLITE_PREPARE_SAVESQL)!=0
+ || rc==SQLITE_ROW || rc==SQLITE_DONE || rc==SQLITE_ERROR
|| (rc&0xff)==SQLITE_BUSY || rc==SQLITE_MISUSE
);
- assert( (p->rc!=SQLITE_ROW && p->rc!=SQLITE_DONE) || p->rc==p->rcApp );
- if( rc!=SQLITE_ROW
- && rc!=SQLITE_DONE
- && (p->prepFlags & SQLITE_PREPARE_SAVESQL)!=0
- ){
- /* If this statement was prepared using saved SQL and an
- ** error has occurred, then return the error code in p->rc to the
- ** caller. Set the error code in the database handle to the same value.
- */
- rc = sqlite3VdbeTransferError(p);
- }
return (rc&db->errMask);
}
@@ -87780,15 +83750,15 @@ SQLITE_API int sqlite3_step(sqlite3_stmt *pStmt){
int savedPc = v->pc;
rc = sqlite3Reprepare(v);
if( rc!=SQLITE_OK ){
- /* This case occurs after failing to recompile an sql statement.
- ** The error message from the SQL compiler has already been loaded
- ** into the database handle. This block copies the error message
+ /* This case occurs after failing to recompile an sql statement.
+ ** The error message from the SQL compiler has already been loaded
+ ** into the database handle. This block copies the error message
** from the database handle into the statement and sets the statement
- ** program counter to 0 to ensure that when the statement is
+ ** program counter to 0 to ensure that when the statement is
** finalized or reset the parser error message is available via
** sqlite3_errmsg() and sqlite3_errcode().
*/
- const char *zErr = (const char *)sqlite3_value_text(db->pErr);
+ const char *zErr = (const char *)sqlite3_value_text(db->pErr);
sqlite3DbFree(db, v->zErrMsg);
if( !db->mallocFailed ){
v->zErrMsg = sqlite3DbStrDup(db, zErr);
@@ -87950,9 +83920,9 @@ SQLITE_API void *sqlite3_get_auxdata(sqlite3_context *pCtx, int iArg){
** access code.
*/
SQLITE_API void sqlite3_set_auxdata(
- sqlite3_context *pCtx,
- int iArg,
- void *pAux,
+ sqlite3_context *pCtx,
+ int iArg,
+ void *pAux,
void (*xDelete)(void*)
){
AuxData *pAuxData;
@@ -87994,7 +83964,7 @@ failed:
#ifndef SQLITE_OMIT_DEPRECATED
/*
-** Return the number of times the Step function of an aggregate has been
+** Return the number of times the Step function of an aggregate has been
** called.
**
** This function is deprecated. Do not use it for new code. It is
@@ -88039,9 +84009,9 @@ static const Mem *columnNullValue(void){
** these assert()s from failing, when building with SQLITE_DEBUG defined
** using gcc, we force nullMem to be 8-byte aligned using the magical
** __attribute__((aligned(8))) macro. */
- static const Mem nullMem
+ static const Mem nullMem
#if defined(SQLITE_DEBUG) && defined(__GNUC__)
- __attribute__((aligned(8)))
+ __attribute__((aligned(8)))
#endif
= {
/* .u = */ {0},
@@ -88087,9 +84057,9 @@ static Mem *columnMem(sqlite3_stmt *pStmt, int i){
}
/*
-** This function is called after invoking an sqlite3_value_XXX function on a
+** This function is called after invoking an sqlite3_value_XXX function on a
** column value (i.e. a value returned by evaluating an SQL expression in the
-** select list of a SELECT statement) that may cause a malloc() failure. If
+** select list of a SELECT statement) that may cause a malloc() failure. If
** malloc() has failed, the threads mallocFailed flag is cleared and the result
** code of statement pStmt set to SQLITE_NOMEM.
**
@@ -88128,8 +84098,8 @@ SQLITE_API const void *sqlite3_column_blob(sqlite3_stmt *pStmt, int i){
const void *val;
val = sqlite3_value_blob( columnMem(pStmt,i) );
/* Even though there is no encoding conversion, value_blob() might
- ** need to call malloc() to expand the result of a zeroblob()
- ** expression.
+ ** need to call malloc() to expand the result of a zeroblob()
+ ** expression.
*/
columnMallocFailure(pStmt);
return val;
@@ -88330,11 +84300,11 @@ SQLITE_API const void *sqlite3_column_origin_name16(sqlite3_stmt *pStmt, int N){
/******************************* sqlite3_bind_ ***************************
-**
+**
** Routines used to attach values to wildcards in a compiled SQL statement.
*/
/*
-** Unbind the value bound to variable i in virtual machine p. This is the
+** Unbind the value bound to variable i in virtual machine p. This is the
** the same as binding a NULL value to the column. If the "i" parameter is
** out of range, then SQLITE_RANGE is returned. Othewise SQLITE_OK.
**
@@ -88353,7 +84323,7 @@ static int vdbeUnbind(Vdbe *p, int i){
if( p->magic!=VDBE_MAGIC_RUN || p->pc>=0 ){
sqlite3Error(p->db, SQLITE_MISUSE);
sqlite3_mutex_leave(p->db->mutex);
- sqlite3_log(SQLITE_MISUSE,
+ sqlite3_log(SQLITE_MISUSE,
"bind on a busy prepared statement: [%s]", p->zSql);
return SQLITE_MISUSE_BKPT;
}
@@ -88368,10 +84338,10 @@ static int vdbeUnbind(Vdbe *p, int i){
pVar->flags = MEM_Null;
p->db->errCode = SQLITE_OK;
- /* If the bit corresponding to this variable in Vdbe.expmask is set, then
+ /* If the bit corresponding to this variable in Vdbe.expmask is set, then
** binding a new value to this variable invalidates the current query plan.
**
- ** IMPLEMENTATION-OF: R-48440-37595 If the specific value bound to host
+ ** IMPLEMENTATION-OF: R-57496-20354 If the specific value bound to a host
** parameter in the WHERE clause might influence the choice of query plan
** for a statement, then the statement will be automatically recompiled,
** as if there had been a schema change, on the first sqlite3_step() call
@@ -88424,10 +84394,10 @@ static int bindText(
** Bind a blob value to an SQL statement variable.
*/
SQLITE_API int sqlite3_bind_blob(
- sqlite3_stmt *pStmt,
- int i,
- const void *zData,
- int nData,
+ sqlite3_stmt *pStmt,
+ int i,
+ const void *zData,
+ int nData,
void (*xDel)(void*)
){
#ifdef SQLITE_ENABLE_API_ARMOR
@@ -88436,10 +84406,10 @@ SQLITE_API int sqlite3_bind_blob(
return bindText(pStmt, i, zData, nData, xDel, 0);
}
SQLITE_API int sqlite3_bind_blob64(
- sqlite3_stmt *pStmt,
- int i,
- const void *zData,
- sqlite3_uint64 nData,
+ sqlite3_stmt *pStmt,
+ int i,
+ const void *zData,
+ sqlite3_uint64 nData,
void (*xDel)(void*)
){
assert( xDel!=SQLITE_DYNAMIC );
@@ -88499,20 +84469,20 @@ SQLITE_API int sqlite3_bind_pointer(
}
return rc;
}
-SQLITE_API int sqlite3_bind_text(
- sqlite3_stmt *pStmt,
- int i,
- const char *zData,
- int nData,
+SQLITE_API int sqlite3_bind_text(
+ sqlite3_stmt *pStmt,
+ int i,
+ const char *zData,
+ int nData,
void (*xDel)(void*)
){
return bindText(pStmt, i, zData, nData, xDel, SQLITE_UTF8);
}
-SQLITE_API int sqlite3_bind_text64(
- sqlite3_stmt *pStmt,
- int i,
- const char *zData,
- sqlite3_uint64 nData,
+SQLITE_API int sqlite3_bind_text64(
+ sqlite3_stmt *pStmt,
+ int i,
+ const char *zData,
+ sqlite3_uint64 nData,
void (*xDel)(void*),
unsigned char enc
){
@@ -88526,10 +84496,10 @@ SQLITE_API int sqlite3_bind_text64(
}
#ifndef SQLITE_OMIT_UTF16
SQLITE_API int sqlite3_bind_text16(
- sqlite3_stmt *pStmt,
- int i,
- const void *zData,
- int nData,
+ sqlite3_stmt *pStmt,
+ int i,
+ const void *zData,
+ int nData,
void (*xDel)(void*)
){
return bindText(pStmt, i, zData, nData, xDel, SQLITE_UTF16NATIVE);
@@ -88593,7 +84563,7 @@ SQLITE_API int sqlite3_bind_zeroblob64(sqlite3_stmt *pStmt, int i, sqlite3_uint6
/*
** Return the number of wildcards that can be potentially bound to.
-** This routine is added to support DBD::SQLite.
+** This routine is added to support DBD::SQLite.
*/
SQLITE_API int sqlite3_bind_parameter_count(sqlite3_stmt *pStmt){
Vdbe *p = (Vdbe*)pStmt;
@@ -88738,7 +84708,7 @@ SQLITE_API int sqlite3_stmt_status(sqlite3_stmt *pStmt, int op, int resetFlag){
Vdbe *pVdbe = (Vdbe*)pStmt;
u32 v;
#ifdef SQLITE_ENABLE_API_ARMOR
- if( !pStmt
+ if( !pStmt
|| (op!=SQLITE_STMTSTATUS_MEMUSED && (op<0||op>=ArraySize(pVdbe->aCounter)))
){
(void)SQLITE_MISUSE_BKPT;
@@ -88817,8 +84787,8 @@ SQLITE_API const char *sqlite3_normalized_sql(sqlite3_stmt *pStmt){
** if successful, or a NULL pointer if an OOM error is encountered.
*/
static UnpackedRecord *vdbeUnpackRecord(
- KeyInfo *pKeyInfo,
- int nKey,
+ KeyInfo *pKeyInfo,
+ int nKey,
const void *pKey
){
UnpackedRecord *pRet; /* Return value */
@@ -88910,7 +84880,7 @@ SQLITE_API int sqlite3_preupdate_count(sqlite3 *db){
** only. It returns zero if the change that caused the callback was made
** immediately by a user SQL statement. Or, if the change was made by a
** trigger program, it returns the number of trigger programs currently
-** on the stack (1 for a top-level trigger, 2 for a trigger fired by a
+** on the stack (1 for a top-level trigger, 2 for a trigger fired by a
** top-level trigger etc.).
**
** For the purposes of the previous paragraph, a foreign key CASCADE, SET NULL
@@ -89119,8 +85089,8 @@ static int findNextHostParameter(const char *zSql, int *pnToken){
/*
** This function returns a pointer to a nul-terminated string in memory
** obtained from sqlite3DbMalloc(). If sqlite3.nVdbeExec is 1, then the
-** string contains a copy of zRawSql but with host parameters expanded to
-** their current bindings. Or, if sqlite3.nVdbeExec is greater than 1,
+** string contains a copy of zRawSql but with host parameters expanded to
+** their current bindings. Or, if sqlite3.nVdbeExec is greater than 1,
** then the returned string holds a copy of zRawSql with "-- " prepended
** to each line of text.
**
@@ -89158,7 +85128,7 @@ SQLITE_PRIVATE char *sqlite3VdbeExpandSql(
char zBase[100]; /* Initial working space */
db = p->db;
- sqlite3StrAccumInit(&out, 0, zBase, sizeof(zBase),
+ sqlite3StrAccumInit(&out, 0, zBase, sizeof(zBase),
db->aLimit[SQLITE_LIMIT_LENGTH]);
if( db->nVdbeExec>1 ){
while( *zRawSql ){
@@ -89226,7 +85196,7 @@ SQLITE_PRIVATE char *sqlite3VdbeExpandSql(
nOut = SQLITE_TRACE_SIZE_LIMIT;
while( nOutn && (pVar->z[nOut]&0xc0)==0x80 ){ nOut++; }
}
-#endif
+#endif
sqlite3_str_appendf(&out, "'%.*q'", nOut, pVar->z);
#ifdef SQLITE_TRACE_SIZE_LIMIT
if( nOutn ){
@@ -89385,6 +85355,26 @@ SQLITE_API int sqlite3_found_count = 0;
# define UPDATE_MAX_BLOBSIZE(P)
#endif
+#ifdef SQLITE_DEBUG
+/* This routine provides a convenient place to set a breakpoint during
+** tracing with PRAGMA vdbe_trace=on. The breakpoint fires right after
+** each opcode is printed. Variables "pc" (program counter) and pOp are
+** available to add conditionals to the breakpoint. GDB example:
+**
+** break test_trace_breakpoint if pc=22
+**
+** Other useful labels for breakpoints include:
+** test_addop_breakpoint(pc,pOp)
+** sqlite3CorruptError(lineno)
+** sqlite3MisuseError(lineno)
+** sqlite3CantopenError(lineno)
+*/
+static void test_trace_breakpoint(int pc, Op *pOp, Vdbe *v){
+ static int n = 0;
+ n++;
+}
+#endif
+
/*
** Invoke the VDBE coverage callback, if that callback is defined. This
** feature is used for test suite validation only and does not appear an
@@ -89399,7 +85389,7 @@ SQLITE_API int sqlite3_found_count = 0;
**
** In other words, if M is 2, then I is either 0 (for fall-through) or
** 1 (for when the branch is taken). If M is 3, the I is 0 for an
-** ordinary fall-through, I is 1 if the branch was taken, and I is 2
+** ordinary fall-through, I is 1 if the branch was taken, and I is 2
** if the result of comparison is NULL. For M=3, I=2 the jump may or
** may not be taken, depending on the SQLITE_JUMPIFNULL flags in p5.
** When M is 4, that means that an OP_Jump is being run. I is 0, 1, or 2
@@ -89493,7 +85483,7 @@ static VdbeCursor *allocateCursor(
u8 eCurType /* Type of the new cursor */
){
/* Find the memory cell that will be used to store the blob of memory
- ** required for this VdbeCursor structure. It is convenient to use a
+ ** required for this VdbeCursor structure. It is convenient to use a
** vdbe memory cell to manage the memory allocation required for a
** VdbeCursor structure for the following reasons:
**
@@ -89514,14 +85504,14 @@ static VdbeCursor *allocateCursor(
int nByte;
VdbeCursor *pCx = 0;
- nByte =
- ROUND8(sizeof(VdbeCursor)) + 2*sizeof(u32)*nField +
+ nByte =
+ ROUND8(sizeof(VdbeCursor)) + 2*sizeof(u32)*nField +
(eCurType==CURTYPE_BTREE?sqlite3BtreeCursorSize():0);
assert( iCur>=0 && iCurnCursor );
if( p->apCsr[iCur] ){ /*OPTIMIZATION-IF-FALSE*/
/* Before calling sqlite3VdbeFreeCursor(), ensure the isEphemeral flag
- ** is clear. Otherwise, if this is an ephemeral cursor created by
+ ** is clear. Otherwise, if this is an ephemeral cursor created by
** OP_OpenDup, the cursor will not be closed and will still be part
** of a BtShared.pCursor list. */
if( p->apCsr[iCur]->pBtx==0 ) p->apCsr[iCur]->isEphemeral = 0;
@@ -89601,7 +85591,7 @@ static void applyNumericAffinity(Mem *pRec, int bTryForInt){
** SQLITE_AFF_INTEGER:
** SQLITE_AFF_REAL:
** SQLITE_AFF_NUMERIC:
-** Try to convert pRec to an integer representation or a
+** Try to convert pRec to an integer representation or a
** floating-point representation if an integer representation
** is not possible. Note that the integer representation is
** always preferred, even if the affinity is REAL, because
@@ -89632,7 +85622,7 @@ static void applyAffinity(
}else if( affinity==SQLITE_AFF_TEXT ){
/* Only attempt the conversion to TEXT if there is an integer or real
** representation (blob and NULL do not get converted) but no string
- ** representation. It would be harmless to repeat the conversion if
+ ** representation. It would be harmless to repeat the conversion if
** there is already a string rep, but it is pointless to waste those
** CPU cycles. */
if( 0==(pRec->flags&MEM_Str) ){ /*OPTIMIZATION-IF-FALSE*/
@@ -89664,12 +85654,12 @@ SQLITE_API int sqlite3_value_numeric_type(sqlite3_value *pVal){
}
/*
-** Exported version of applyAffinity(). This one works on sqlite3_value*,
+** Exported version of applyAffinity(). This one works on sqlite3_value*,
** not the internal Mem* type.
*/
SQLITE_PRIVATE void sqlite3ValueApplyAffinity(
- sqlite3_value *pVal,
- u8 affinity,
+ sqlite3_value *pVal,
+ u8 affinity,
u8 enc
){
applyAffinity((Mem *)pVal, affinity, enc);
@@ -89704,7 +85694,7 @@ static u16 SQLITE_NOINLINE computeNumericType(Mem *pMem){
/*
** Return the numeric type for pMem, either MEM_Int or MEM_Real or both or
-** none.
+** none.
**
** Unlike applyNumericAffinity(), this routine does not modify pMem->flags.
** But it does set pMem->u.r and pMem->u.i appropriately.
@@ -89729,12 +85719,9 @@ static u16 numericType(Mem *pMem){
** Write a nice string representation of the contents of cell pMem
** into buffer zBuf, length nBuf.
*/
-SQLITE_PRIVATE void sqlite3VdbeMemPrettyPrint(Mem *pMem, char *zBuf){
- char *zCsr = zBuf;
+SQLITE_PRIVATE void sqlite3VdbeMemPrettyPrint(Mem *pMem, StrAccum *pStr){
int f = pMem->flags;
-
static const char *const encnames[] = {"(X)", "(8)", "(16LE)", "(16BE)"};
-
if( f&MEM_Blob ){
int i;
char c;
@@ -89750,57 +85737,40 @@ SQLITE_PRIVATE void sqlite3VdbeMemPrettyPrint(Mem *pMem, char *zBuf){
}else{
c = 's';
}
- *(zCsr++) = c;
- *(zCsr++) = 'x';
- sqlite3_snprintf(100, zCsr, "%d[", pMem->n);
- zCsr += sqlite3Strlen30(zCsr);
+ sqlite3_str_appendf(pStr, "%cx[", c);
for(i=0; i<25 && in; i++){
- sqlite3_snprintf(100, zCsr, "%02X", ((int)pMem->z[i] & 0xFF));
- zCsr += sqlite3Strlen30(zCsr);
+ sqlite3_str_appendf(pStr, "%02X", ((int)pMem->z[i] & 0xFF));
}
- *zCsr++ = '|';
+ sqlite3_str_appendf(pStr, "|");
for(i=0; i<25 && in; i++){
char z = pMem->z[i];
- if( z<32 || z>126 ) *zCsr++ = '.';
- else *zCsr++ = z;
+ sqlite3_str_appendchar(pStr, 1, (z<32||z>126)?'.':z);
}
- *(zCsr++) = ']';
+ sqlite3_str_appendf(pStr,"]");
if( f & MEM_Zero ){
- sqlite3_snprintf(100, zCsr,"+%dz",pMem->u.nZero);
- zCsr += sqlite3Strlen30(zCsr);
+ sqlite3_str_appendf(pStr, "+%dz",pMem->u.nZero);
}
- *zCsr = '\0';
}else if( f & MEM_Str ){
- int j, k;
- zBuf[0] = ' ';
+ int j;
+ u8 c;
if( f & MEM_Dyn ){
- zBuf[1] = 'z';
+ c = 'z';
assert( (f & (MEM_Static|MEM_Ephem))==0 );
}else if( f & MEM_Static ){
- zBuf[1] = 't';
+ c = 't';
assert( (f & (MEM_Dyn|MEM_Ephem))==0 );
}else if( f & MEM_Ephem ){
- zBuf[1] = 'e';
+ c = 'e';
assert( (f & (MEM_Static|MEM_Dyn))==0 );
}else{
- zBuf[1] = 's';
+ c = 's';
}
- k = 2;
- sqlite3_snprintf(100, &zBuf[k], "%d", pMem->n);
- k += sqlite3Strlen30(&zBuf[k]);
- zBuf[k++] = '[';
+ sqlite3_str_appendf(pStr, " %c%d[", c, pMem->n);
for(j=0; j<25 && jn; j++){
- u8 c = pMem->z[j];
- if( c>=0x20 && c<0x7f ){
- zBuf[k++] = c;
- }else{
- zBuf[k++] = '.';
- }
+ c = pMem->z[j];
+ sqlite3_str_appendchar(pStr, 1, (c>=0x20&&c<=0x7f) ? c : '.');
}
- zBuf[k++] = ']';
- sqlite3_snprintf(100,&zBuf[k], encnames[pMem->enc]);
- k += sqlite3Strlen30(&zBuf[k]);
- zBuf[k++] = 0;
+ sqlite3_str_appendf(pStr, "]%s", encnames[pMem->enc]);
}
}
#endif
@@ -89827,20 +85797,37 @@ static void memTracePrint(Mem *p){
}else if( sqlite3VdbeMemIsRowSet(p) ){
printf(" (rowset)");
}else{
- char zBuf[200];
- sqlite3VdbeMemPrettyPrint(p, zBuf);
- printf(" %s", zBuf);
+ StrAccum acc;
+ char zBuf[1000];
+ sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0);
+ sqlite3VdbeMemPrettyPrint(p, &acc);
+ printf(" %s", sqlite3StrAccumFinish(&acc));
}
if( p->flags & MEM_Subtype ) printf(" subtype=0x%02x", p->eSubtype);
}
static void registerTrace(int iReg, Mem *p){
- printf("REG[%d] = ", iReg);
+ printf("R[%d] = ", iReg);
memTracePrint(p);
+ if( p->pScopyFrom ){
+ printf(" <== R[%d]", (int)(p->pScopyFrom - &p[-iReg]));
+ }
printf("\n");
sqlite3VdbeCheckMemInvariants(p);
}
#endif
+#ifdef SQLITE_DEBUG
+/*
+** Show the values of all registers in the virtual machine. Used for
+** interactive debugging.
+*/
+SQLITE_PRIVATE void sqlite3VdbeRegisterDump(Vdbe *v){
+ int i;
+ for(i=1; inMem; i++) registerTrace(i, v->aMem+i);
+}
+#endif /* SQLITE_DEBUG */
+
+
#ifdef SQLITE_DEBUG
# define REGISTER_TRACE(R,M) if(db->flags&SQLITE_VdbeTrace)registerTrace(R,M)
#else
@@ -89850,8 +85837,8 @@ static void registerTrace(int iReg, Mem *p){
#ifdef VDBE_PROFILE
-/*
-** hwtime.h contains inline assembler code for implementing
+/*
+** hwtime.h contains inline assembler code for implementing
** high-performance timing routines.
*/
/************** Include hwtime.h in the middle of vdbe.c *********************/
@@ -89869,7 +85856,7 @@ static void registerTrace(int iReg, Mem *p){
******************************************************************************
**
** This file contains inline asm code for retrieving "high-performance"
-** counters for x86 class CPUs.
+** counters for x86 and x86_64 class CPUs.
*/
#ifndef SQLITE_HWTIME_H
#define SQLITE_HWTIME_H
@@ -89880,8 +85867,9 @@ static void registerTrace(int iReg, Mem *p){
** processor and returns that value. This can be used for high-res
** profiling.
*/
-#if (defined(__GNUC__) || defined(_MSC_VER)) && \
- (defined(i386) || defined(__i386__) || defined(_M_IX86))
+#if !defined(__STRICT_ANSI__) && \
+ (defined(__GNUC__) || defined(_MSC_VER)) && \
+ (defined(i386) || defined(__i386__) || defined(_M_IX86))
#if defined(__GNUC__)
@@ -89902,15 +85890,15 @@ static void registerTrace(int iReg, Mem *p){
#endif
-#elif (defined(__GNUC__) && defined(__x86_64__))
+#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__x86_64__))
__inline__ sqlite_uint64 sqlite3Hwtime(void){
unsigned long val;
__asm__ __volatile__ ("rdtsc" : "=A" (val));
return val;
}
-
-#elif (defined(__GNUC__) && defined(__ppc__))
+
+#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__ppc__))
__inline__ sqlite_uint64 sqlite3Hwtime(void){
unsigned long long retval;
@@ -89927,14 +85915,13 @@ static void registerTrace(int iReg, Mem *p){
#else
- #error Need implementation of sqlite3Hwtime() for your platform.
-
/*
- ** To compile without implementing sqlite3Hwtime() for your platform,
- ** you can remove the above #error and use the following
- ** stub function. You will lose timing support for many
- ** of the debugging and testing utilities, but it should at
- ** least compile and run.
+ ** asm() is needed for hardware timing support. Without asm(),
+ ** disable the sqlite3Hwtime() routine.
+ **
+ ** sqlite3Hwtime() is only used for some obscure debugging
+ ** and analysis configurations, not in any deliverable, so this
+ ** should not be a great loss.
*/
SQLITE_PRIVATE sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); }
@@ -89951,9 +85938,9 @@ SQLITE_PRIVATE sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); }
/*
** This function is only called from within an assert() expression. It
** checks that the sqlite3.nTransaction variable is correctly set to
-** the number of non-transaction savepoints currently in the
+** the number of non-transaction savepoints currently in the
** linked list starting at sqlite3.pSavepoint.
-**
+**
** Usage:
**
** assert( checkSavepointCount(db) );
@@ -89993,7 +85980,7 @@ static Mem *out2Prerelease(Vdbe *p, VdbeOp *pOp){
/*
** Execute as much of a VDBE program as we can.
-** This is the core of sqlite3_step().
+** This is the core of sqlite3_step().
*/
SQLITE_PRIVATE int sqlite3VdbeExec(
Vdbe *p /* The VDBE */
@@ -90011,9 +85998,9 @@ SQLITE_PRIVATE int sqlite3VdbeExec(
u8 resetSchemaOnFault = 0; /* Reset schema after an error if positive */
u8 encoding = ENC(db); /* The database encoding */
int iCompare = 0; /* Result of last comparison */
- unsigned nVmStep = 0; /* Number of virtual machine steps */
+ u64 nVmStep = 0; /* Number of virtual machine steps */
#ifndef SQLITE_OMIT_PROGRESS_CALLBACK
- unsigned nProgressLimit; /* Invoke xProgress() when nVmStep reaches this */
+ u64 nProgressLimit; /* Invoke xProgress() when nVmStep reaches this */
#endif
Mem *aMem = p->aMem; /* Copy of p->aMem */
Mem *pIn1 = 0; /* 1st input operand */
@@ -90033,7 +86020,7 @@ SQLITE_PRIVATE int sqlite3VdbeExec(
assert( 0 < db->nProgressOps );
nProgressLimit = db->nProgressOps - (iPrior % db->nProgressOps);
}else{
- nProgressLimit = 0xffffffff;
+ nProgressLimit = LARGEST_UINT64;
}
#endif
if( p->rc==SQLITE_NOMEM ){
@@ -90042,12 +86029,14 @@ SQLITE_PRIVATE int sqlite3VdbeExec(
goto no_mem;
}
assert( p->rc==SQLITE_OK || (p->rc&0xff)==SQLITE_BUSY );
+ testcase( p->rc!=SQLITE_OK );
+ p->rc = SQLITE_OK;
assert( p->bIsReader || p->readOnly!=0 );
p->iCurrentTime = 0;
assert( p->explain==0 );
p->pResultSet = 0;
db->busyHandler.nBusy = 0;
- if( db->u1.isInterrupted ) goto abort_due_to_interrupt;
+ if( AtomicLoad(&db->u1.isInterrupted) ) goto abort_due_to_interrupt;
sqlite3VdbeIOTraceSql(p);
#ifdef SQLITE_DEBUG
sqlite3BeginBenignMalloc();
@@ -90095,9 +86084,10 @@ SQLITE_PRIVATE int sqlite3VdbeExec(
#ifdef SQLITE_DEBUG
if( db->flags & SQLITE_VdbeTrace ){
sqlite3VdbePrintOp(stdout, (int)(pOp - aOp), pOp);
+ test_trace_breakpoint((int)(pOp - aOp),pOp,p);
}
#endif
-
+
/* Check to see if we need to simulate an interrupt. This only happens
** if we have a special test build.
@@ -90151,7 +86141,7 @@ SQLITE_PRIVATE int sqlite3VdbeExec(
#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE)
pOrigOp = pOp;
#endif
-
+
switch( pOp->opcode ){
/*****************************************************************************
@@ -90192,7 +86182,7 @@ SQLITE_PRIVATE int sqlite3VdbeExec(
/* Opcode: Goto * P2 * * *
**
** An unconditional jump to address P2.
-** The next instruction executed will be
+** The next instruction executed will be
** the one at index P2 from the beginning of
** the program.
**
@@ -90202,13 +86192,27 @@ SQLITE_PRIVATE int sqlite3VdbeExec(
** to the current line should be indented for EXPLAIN output.
*/
case OP_Goto: { /* jump */
+
+#ifdef SQLITE_DEBUG
+ /* In debuggging mode, when the p5 flags is set on an OP_Goto, that
+ ** means we should really jump back to the preceeding OP_ReleaseReg
+ ** instruction. */
+ if( pOp->p5 ){
+ assert( pOp->p2 < (int)(pOp - aOp) );
+ assert( pOp->p2 > 1 );
+ pOp = &aOp[pOp->p2 - 2];
+ assert( pOp[1].opcode==OP_ReleaseReg );
+ goto check_for_interrupt;
+ }
+#endif
+
jump_to_p2_and_check_for_interrupt:
pOp = &aOp[pOp->p2 - 1];
/* Opcodes that are used as the bottom of a loop (OP_Next, OP_Prev,
** OP_VNext, or OP_SorterNext) all jump here upon
** completion. Check to see if sqlite3_interrupt() has been called
- ** or if the progress callback needs to be invoked.
+ ** or if the progress callback needs to be invoked.
**
** This code uses unstructured "goto" statements and does not look clean.
** But that is not due to sloppy coding habits. The code is written this
@@ -90216,7 +86220,7 @@ jump_to_p2_and_check_for_interrupt:
** checks on every opcode. This helps sqlite3_step() to run about 1.5%
** faster according to "valgrind --tool=cachegrind" */
check_for_interrupt:
- if( db->u1.isInterrupted ) goto abort_due_to_interrupt;
+ if( AtomicLoad(&db->u1.isInterrupted) ) goto abort_due_to_interrupt;
#ifndef SQLITE_OMIT_PROGRESS_CALLBACK
/* Call the progress callback if it is configured and the required number
** of VDBE ops have been executed (either since this invocation of
@@ -90228,13 +86232,13 @@ check_for_interrupt:
assert( db->nProgressOps!=0 );
nProgressLimit += db->nProgressOps;
if( db->xProgress(db->pProgressArg) ){
- nProgressLimit = 0xffffffff;
+ nProgressLimit = LARGEST_UINT64;
rc = SQLITE_INTERRUPT;
goto abort_due_to_error;
}
}
#endif
-
+
break;
}
@@ -90356,6 +86360,7 @@ case OP_HaltIfNull: { /* in3 */
#endif
if( (pIn3->flags & MEM_Null)==0 ) break;
/* Fall through into OP_Halt */
+ /* no break */ deliberate_fall_through
}
/* Opcode: Halt P1 P2 * P4 P5
@@ -90369,7 +86374,7 @@ case OP_HaltIfNull: { /* in3 */
** whether or not to rollback the current transaction. Do not rollback
** if P2==OE_Fail. Do the rollback if P2==OE_Rollback. If P2==OE_Abort,
** then back out all changes that have occurred during this execution of the
-** VDBE, but do not rollback the transaction.
+** VDBE, but do not rollback the transaction.
**
** If P4 is not null then it is an error message string.
**
@@ -90404,7 +86409,7 @@ case OP_Halt: {
sqlite3VdbeSetChanges(db, p->nChange);
pcx = sqlite3VdbeFrameRestore(pFrame);
if( pOp->p2==OE_Ignore ){
- /* Instruction pcx is the OP_Program that invoked the sub-program
+ /* Instruction pcx is the OP_Program that invoked the sub-program
** currently being halted. If the p2 instruction of this OP_Halt
** instruction is set to OE_Ignore, then the sub-program is throwing
** an IGNORE exception. In this case jump to the address specified
@@ -90492,7 +86497,7 @@ case OP_Real: { /* same as TK_FLOAT, out2 */
/* Opcode: String8 * P2 * P4 *
** Synopsis: r[P2]='P4'
**
-** P4 points to a nul terminated UTF-8 string. This opcode is transformed
+** P4 points to a nul terminated UTF-8 string. This opcode is transformed
** into a String opcode before it is executed for the first time. During
** this transformation, the length of string P4 is computed and stored
** as the P1 parameter.
@@ -90526,8 +86531,9 @@ case OP_String8: { /* same as TK_STRING, out2 */
pOp->opcode = OP_String;
assert( rc==SQLITE_OK );
/* Fall through to the next case, OP_String */
+ /* no break */ deliberate_fall_through
}
-
+
/* Opcode: String P1 P2 P3 P4 P5
** Synopsis: r[P2]='P4' (len=P1)
**
@@ -90678,8 +86684,13 @@ case OP_Move: {
memAboutToChange(p, pOut);
sqlite3VdbeMemMove(pOut, pIn1);
#ifdef SQLITE_DEBUG
- if( pOut->pScopyFrom>=&aMem[p1] && pOut->pScopyFrompScopyFrom += pOp->p2 - p1;
+ pIn1->pScopyFrom = 0;
+ { int i;
+ for(i=1; inMem; i++){
+ if( aMem[i].pScopyFrom==pIn1 ){
+ aMem[i].pScopyFrom = pOut;
+ }
+ }
}
#endif
Deephemeralize(pOut);
@@ -90786,8 +86797,8 @@ case OP_ResultRow: {
goto abort_due_to_error;
}
- /* If the SQLITE_CountRows flag is set in sqlite3.flags mask, then
- ** DML statements invoke this opcode to return the number of rows
+ /* If the SQLITE_CountRows flag is set in sqlite3.flags mask, then
+ ** DML statements invoke this opcode to return the number of rows
** modified to the user. This is the only way that a VM that
** opens a statement transaction may invoke this opcode.
**
@@ -90820,13 +86831,22 @@ case OP_ResultRow: {
|| (pMem[i].flags & (MEM_Str|MEM_Blob))==0 );
sqlite3VdbeMemNulTerminate(&pMem[i]);
REGISTER_TRACE(pOp->p1+i, &pMem[i]);
+#ifdef SQLITE_DEBUG
+ /* The registers in the result will not be used again when the
+ ** prepared statement restarts. This is because sqlite3_column()
+ ** APIs might have caused type conversions of made other changes to
+ ** the register values. Therefore, we can go ahead and break any
+ ** OP_SCopy dependencies. */
+ pMem[i].pScopyFrom = 0;
+#endif
}
if( db->mallocFailed ) goto no_mem;
if( db->mTrace & SQLITE_TRACE_ROW ){
- db->xTrace(SQLITE_TRACE_ROW, db->pTraceArg, p, 0);
+ db->trace.xV2(SQLITE_TRACE_ROW, db->pTraceArg, p, 0);
}
+
/* Return SQLITE_ROW
*/
p->pc = (int)(pOp - aOp) + 1;
@@ -90855,7 +86875,6 @@ case OP_Concat: { /* same as TK_CONCAT, in1, in2, out3 */
pIn1 = &aMem[pOp->p1];
pIn2 = &aMem[pOp->p2];
pOut = &aMem[pOp->p3];
- testcase( pIn1==pIn2 );
testcase( pOut==pIn2 );
assert( pIn1!=pOut );
flags1 = pIn1->flags;
@@ -90932,15 +86951,15 @@ case OP_Concat: { /* same as TK_CONCAT, in1, in2, out3 */
** Synopsis: r[P3]=r[P2]/r[P1]
**
** Divide the value in register P1 by the value in register P2
-** and store the result in register P3 (P3=P2/P1). If the value in
-** register P1 is zero, then the result is NULL. If either input is
+** and store the result in register P3 (P3=P2/P1). If the value in
+** register P1 is zero, then the result is NULL. If either input is
** NULL, the result is NULL.
*/
/* Opcode: Remainder P1 P2 P3 * *
** Synopsis: r[P3]=r[P2]%r[P1]
**
-** Compute the remainder after integer register P2 is divided by
-** register P1 and store the result in register P3.
+** Compute the remainder after integer register P2 is divided by
+** register P1 and store the result in register P3.
** If the value in register P1 is zero the result is NULL.
** If either operand is NULL, the result is NULL.
*/
@@ -91135,7 +87154,7 @@ case OP_ShiftRight: { /* same as TK_RSHIFT, in1, in2, out3 */
/* Opcode: AddImm P1 P2 * * *
** Synopsis: r[P1]=r[P1]+P2
-**
+**
** Add the constant P2 to the value in register P1.
** The result is always an integer.
**
@@ -91150,7 +87169,7 @@ case OP_AddImm: { /* in1 */
}
/* Opcode: MustBeInt P1 P2 * * *
-**
+**
** Force the value in register P1 to be an integer. If the value
** in P1 is not an integer and cannot be converted into an integer
** without data loss, then jump immediately to P2, or if P2==0
@@ -91202,7 +87221,7 @@ case OP_RealAffinity: { /* in1 */
** Synopsis: affinity(r[P1])
**
** Force the value in register P1 to be the type defined by P2.
-**
+**
**
** - P2=='A' → BLOB
**
- P2=='B' → TEXT
@@ -91223,9 +87242,11 @@ case OP_Cast: { /* in1 */
pIn1 = &aMem[pOp->p1];
memAboutToChange(p, pIn1);
rc = ExpandBlob(pIn1);
- sqlite3VdbeMemCast(pIn1, pOp->p2, encoding);
- UPDATE_MAX_BLOBSIZE(pIn1);
if( rc ) goto abort_due_to_error;
+ rc = sqlite3VdbeMemCast(pIn1, pOp->p2, encoding);
+ if( rc ) goto abort_due_to_error;
+ UPDATE_MAX_BLOBSIZE(pIn1);
+ REGISTER_TRACE(pOp->p1, pIn1);
break;
}
#endif /* SQLITE_OMIT_CAST */
@@ -91238,14 +87259,14 @@ case OP_Cast: { /* in1 */
** store the result of comparison in register P2.
**
** The SQLITE_AFF_MASK portion of P5 must be an affinity character -
-** SQLITE_AFF_TEXT, SQLITE_AFF_INTEGER, and so forth. An attempt is made
+** SQLITE_AFF_TEXT, SQLITE_AFF_INTEGER, and so forth. An attempt is made
** to coerce both inputs according to this affinity before the
** comparison is made. If the SQLITE_AFF_MASK is 0x00, then numeric
** affinity is used. Note that the affinity conversions are stored
** back into the input registers P1 and P3. So this opcode can cause
** persistent changes to registers P1 and P3.
**
-** Once any conversions have taken place, and neither value is NULL,
+** Once any conversions have taken place, and neither value is NULL,
** the values are compared. If both values are blobs then memcmp() is
** used to determine the results of the comparison. If both values
** are text, then the appropriate collating function specified in
@@ -91284,18 +87305,18 @@ case OP_Cast: { /* in1 */
** the result of comparison (0 or 1 or NULL) into register P2.
**
** If the SQLITE_JUMPIFNULL bit of P5 is set and either reg(P1) or
-** reg(P3) is NULL then the take the jump. If the SQLITE_JUMPIFNULL
+** reg(P3) is NULL then the take the jump. If the SQLITE_JUMPIFNULL
** bit is clear then fall through if either operand is NULL.
**
** The SQLITE_AFF_MASK portion of P5 must be an affinity character -
-** SQLITE_AFF_TEXT, SQLITE_AFF_INTEGER, and so forth. An attempt is made
+** SQLITE_AFF_TEXT, SQLITE_AFF_INTEGER, and so forth. An attempt is made
** to coerce both inputs according to this affinity before the
** comparison is made. If the SQLITE_AFF_MASK is 0x00, then numeric
** affinity is used. Note that the affinity conversions are stored
** back into the input registers P1 and P3. So this opcode can cause
** persistent changes to registers P1 and P3.
**
-** Once any conversions have taken place, and neither value is NULL,
+** Once any conversions have taken place, and neither value is NULL,
** the values are compared. If both values are blobs then memcmp() is
** used to determine the results of the comparison. If both values
** are text, then the appropriate collating function specified in
@@ -91384,12 +87405,7 @@ case OP_Ge: { /* same as TK_GE, jump, in1, in3 */
if( (flags1 | flags3)&MEM_Str ){
if( (flags1 & (MEM_Int|MEM_IntReal|MEM_Real|MEM_Str))==MEM_Str ){
applyNumericAffinity(pIn1,0);
- assert( flags3==pIn3->flags );
- /* testcase( flags3!=pIn3->flags );
- ** this used to be possible with pIn1==pIn3, but not since
- ** the column cache was removed. The following assignment
- ** is essentially a no-op. But, it provides defense-in-depth
- ** in case our analysis is incorrect, so it is left in. */
+ testcase( flags3==pIn3->flags );
flags3 = pIn3->flags;
}
if( (flags3 & (MEM_Int|MEM_IntReal|MEM_Real|MEM_Str))==MEM_Str ){
@@ -91412,7 +87428,7 @@ case OP_Ge: { /* same as TK_GE, jump, in1, in3 */
sqlite3VdbeMemStringify(pIn1, encoding, 1);
testcase( (flags1&MEM_Dyn) != (pIn1->flags&MEM_Dyn) );
flags1 = (pIn1->flags & ~MEM_TypeMask) | (flags1 & MEM_TypeMask);
- assert( pIn1!=pIn3 );
+ if( NEVER(pIn1==pIn3) ) flags3 = flags1 | MEM_Str;
}
if( (flags3 & MEM_Str)==0 && (flags3&(MEM_Int|MEM_Real|MEM_IntReal))!=0 ){
testcase( pIn3->flags & MEM_Int );
@@ -91447,10 +87463,10 @@ compare_op:
}
/* Undo any changes made by applyAffinity() to the input registers. */
- assert( (pIn1->flags & MEM_Dyn) == (flags1 & MEM_Dyn) );
- pIn1->flags = flags1;
assert( (pIn3->flags & MEM_Dyn) == (flags3 & MEM_Dyn) );
pIn3->flags = flags3;
+ assert( (pIn1->flags & MEM_Dyn) == (flags1 & MEM_Dyn) );
+ pIn1->flags = flags1;
if( pOp->p5 & SQLITE_STOREP2 ){
pOut = &aMem[pOp->p2];
@@ -91486,16 +87502,31 @@ compare_op:
/* Opcode: ElseNotEq * P2 * * *
**
-** This opcode must immediately follow an OP_Lt or OP_Gt comparison operator.
-** If result of an OP_Eq comparison on the same two operands
-** would have be NULL or false (0), then then jump to P2.
-** If the result of an OP_Eq comparison on the two previous operands
-** would have been true (1), then fall through.
+** This opcode must follow an OP_Lt or OP_Gt comparison operator. There
+** can be zero or more OP_ReleaseReg opcodes intervening, but no other
+** opcodes are allowed to occur between this instruction and the previous
+** OP_Lt or OP_Gt. Furthermore, the prior OP_Lt or OP_Gt must have the
+** SQLITE_STOREP2 bit set in the P5 field.
+**
+** If result of an OP_Eq comparison on the same two operands as the
+** prior OP_Lt or OP_Gt would have been NULL or false (0), then then
+** jump to P2. If the result of an OP_Eq comparison on the two previous
+** operands would have been true (1), then fall through.
*/
case OP_ElseNotEq: { /* same as TK_ESCAPE, jump */
- assert( pOp>aOp );
- assert( pOp[-1].opcode==OP_Lt || pOp[-1].opcode==OP_Gt );
- assert( pOp[-1].p5 & SQLITE_STOREP2 );
+
+#ifdef SQLITE_DEBUG
+ /* Verify the preconditions of this opcode - that it follows an OP_Lt or
+ ** OP_Gt with the SQLITE_STOREP2 flag set, with zero or more intervening
+ ** OP_ReleaseReg opcodes */
+ int iAddr;
+ for(iAddr = (int)(pOp - aOp) - 1; ALWAYS(iAddr>=0); iAddr--){
+ if( aOp[iAddr].opcode==OP_ReleaseReg ) continue;
+ assert( aOp[iAddr].opcode==OP_Lt || aOp[iAddr].opcode==OP_Gt );
+ assert( aOp[iAddr].p5 & SQLITE_STOREP2 );
+ break;
+ }
+#endif /* SQLITE_DEBUG */
VdbeBranchTaken(iCompare!=0, 2);
if( iCompare!=0 ) goto jump_to_p2;
break;
@@ -91508,7 +87539,7 @@ case OP_ElseNotEq: { /* same as TK_ESCAPE, jump */
** instruction. The permutation is stored in the P4 operand.
**
** The permutation is only valid until the next OP_Compare that has
-** the OPFLAG_PERMUTE bit set in P5. Typically the OP_Permutation should
+** the OPFLAG_PERMUTE bit set in P5. Typically the OP_Permutation should
** occur immediately prior to the OP_Compare.
**
** The first integer in the P4 integer array is the length of the array
@@ -91548,10 +87579,10 @@ case OP_Compare: {
int p1;
int p2;
const KeyInfo *pKeyInfo;
- int idx;
+ u32 idx;
CollSeq *pColl; /* Collating sequence to use on this term */
int bRev; /* True for DESCENDING sort order */
- int *aPermute; /* The permutation */
+ u32 *aPermute; /* The permutation */
if( (pOp->p5 & OPFLAG_PERMUTE)==0 ){
aPermute = 0;
@@ -91571,7 +87602,7 @@ case OP_Compare: {
#ifdef SQLITE_DEBUG
if( aPermute ){
int k, mx = 0;
- for(k=0; kmx ) mx = aPermute[k];
+ for(k=0; k(u32)mx ) mx = aPermute[k];
assert( p1>0 && p1+mx<=(p->nMem+1 - p->nCursor)+1 );
assert( p2>0 && p2+mx<=(p->nMem+1 - p->nCursor)+1 );
}else{
@@ -91580,7 +87611,7 @@ case OP_Compare: {
}
#endif /* SQLITE_DEBUG */
for(i=0; iaSortFlags[i] & KEYINFO_ORDER_DESC);
iCompare = sqlite3MemCompare(&aMem[p1+idx], &aMem[p2+idx], pColl);
if( iCompare ){
- if( (pKeyInfo->aSortFlags[i] & KEYINFO_ORDER_BIGNULL)
+ if( (pKeyInfo->aSortFlags[i] & KEYINFO_ORDER_BIGNULL)
&& ((aMem[p1+idx].flags & MEM_Null) || (aMem[p2+idx].flags & MEM_Null))
){
iCompare = -iCompare;
@@ -91670,13 +87701,13 @@ case OP_Or: { /* same as TK_OR, in1, in2, out3 */
** IS NOT FALSE operators.
**
** Interpret the value in register P1 as a boolean value. Store that
-** boolean (a 0 or 1) in register P2. Or if the value in register P1 is
+** boolean (a 0 or 1) in register P2. Or if the value in register P1 is
** NULL, then the P3 is stored in register P2. Invert the answer if P4
** is 1.
**
** The logic is summarized like this:
**
-**
+**
** - If P3==0 and P4==0 then r[P2] := r[P1] IS TRUE
**
- If P3==1 and P4==1 then r[P2] := r[P1] IS FALSE
**
- If P3==0 and P4==1 then r[P2] := r[P1] IS NOT TRUE
@@ -91696,7 +87727,7 @@ case OP_IsTrue: { /* in1, out2 */
** Synopsis: r[P2]= !r[P1]
**
** Interpret the value in register P1 as a boolean value. Store the
-** boolean complement in register P2. If the value in register P1 is
+** boolean complement in register P2. If the value in register P1 is
** NULL, then a NULL is stored in P2.
*/
case OP_Not: { /* same as TK_NOT, in1, out2 */
@@ -91811,7 +87842,7 @@ case OP_IsNull: { /* same as TK_ISNULL, jump, in1 */
/* Opcode: NotNull P1 P2 * * *
** Synopsis: if r[P1]!=NULL goto P2
**
-** Jump to P2 if the value in register P1 is not NULL.
+** Jump to P2 if the value in register P1 is not NULL.
*/
case OP_NotNull: { /* same as TK_NOTNULL, jump, in1 */
pIn1 = &aMem[pOp->p1];
@@ -91876,7 +87907,7 @@ case OP_Offset: { /* out3 */
** Interpret the data that cursor P1 points to as a structure built using
** the MakeRecord instruction. (See the MakeRecord opcode for additional
** information about the format of the data.) Extract the P2-th column
-** from this record. If there are less that (P2+1)
+** from this record. If there are less that (P2+1)
** values in the record, extract a NULL.
**
** The value extracted is stored in register P3.
@@ -91891,7 +87922,7 @@ case OP_Offset: { /* out3 */
** skipped for length() and all content loading can be skipped for typeof().
*/
case OP_Column: {
- int p2; /* column number to retrieve */
+ u32 p2; /* column number to retrieve */
VdbeCursor *pC; /* The VDBE cursor */
BtCursor *pCrsr; /* The BTree cursor */
u32 *aOffset; /* aOffset[i] is offset to start of data for i-th column */
@@ -91906,11 +87937,13 @@ case OP_Column: {
u32 t; /* A type code from the record header */
Mem *pReg; /* PseudoTable input register */
+ assert( pOp->p1>=0 && pOp->p1nCursor );
pC = p->apCsr[pOp->p1];
- p2 = pOp->p2;
+ assert( pC!=0 );
+ p2 = (u32)pOp->p2;
/* If the cursor cache is stale (meaning it is not currently point at
- ** the correct row) then bring it up-to-date by doing the necessary
+ ** the correct row) then bring it up-to-date by doing the necessary
** B-Tree seek. */
rc = sqlite3VdbeCursorMoveto(&pC, &p2);
if( rc ) goto abort_due_to_error;
@@ -91918,9 +87951,8 @@ case OP_Column: {
assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) );
pDest = &aMem[pOp->p3];
memAboutToChange(p, pDest);
- assert( pOp->p1>=0 && pOp->p1nCursor );
assert( pC!=0 );
- assert( p2nField );
+ assert( p2<(u32)pC->nField );
aOffset = pC->aOffset;
assert( pC->eCurType!=CURTYPE_VTAB );
assert( pC->eCurType!=CURTYPE_PSEUDO || pC->nullRow );
@@ -92005,19 +88037,19 @@ case OP_Column: {
*/
if( pC->nHdrParsed<=p2 ){
/* If there is more header available for parsing in the record, try
- ** to extract additional fields up through the p2+1-th field
+ ** to extract additional fields up through the p2+1-th field
*/
if( pC->iHdrOffsetaRow==0 ){
memset(&sMem, 0, sizeof(sMem));
- rc = sqlite3VdbeMemFromBtree(pC->uc.pCursor, 0, aOffset[0], &sMem);
+ rc = sqlite3VdbeMemFromBtreeZeroOffset(pC->uc.pCursor,aOffset[0],&sMem);
if( rc!=SQLITE_OK ) goto abort_due_to_error;
zData = (u8*)sMem.z;
}else{
zData = pC->aRow;
}
-
+
/* Fill in pC->aType[i] and aOffset[i] values through the p2-th field. */
op_column_read_header:
i = pC->nHdrParsed;
@@ -92035,7 +88067,7 @@ case OP_Column: {
offset64 += sqlite3VdbeSerialTypeLen(t);
}
aOffset[++i] = (u32)(offset64 & 0xffffffff);
- }while( i<=p2 && zHdruc.pCursor, aOffset[p2], len, pDest);
if( rc!=SQLITE_OK ) goto abort_due_to_error;
@@ -92175,7 +88208,7 @@ case OP_Affinity: {
pIn1 = &aMem[pOp->p1];
while( 1 /*exit-by-break*/ ){
assert( pIn1 <= &p->aMem[(p->nMem+1 - p->nCursor)] );
- assert( memIsValid(pIn1) );
+ assert( zAffinity[0]==SQLITE_AFF_NONE || memIsValid(pIn1) );
applyAffinity(pIn1, zAffinity[0], encoding);
if( zAffinity[0]==SQLITE_AFF_REAL && (pIn1->flags & MEM_Int)!=0 ){
/* When applying REAL affinity, if the result is still an MEM_Int
@@ -92218,6 +88251,17 @@ case OP_Affinity: {
** macros defined in sqliteInt.h.
**
** If P4 is NULL then all index fields have the affinity BLOB.
+**
+** The meaning of P5 depends on whether or not the SQLITE_ENABLE_NULL_TRIM
+** compile-time option is enabled:
+**
+** * If SQLITE_ENABLE_NULL_TRIM is enabled, then the P5 is the index
+** of the right-most table that can be null-trimmed.
+**
+** * If SQLITE_ENABLE_NULL_TRIM is omitted, then P5 has the value
+** OPFLAG_NOCHNG_MAGIC if the OP_MakeRecord opcode is allowed to
+** accept no-change records with serial_type 10. This value is
+** only used inside an assert() and does not affect the end result.
*/
case OP_MakeRecord: {
Mem *pRec; /* The new record */
@@ -92240,13 +88284,13 @@ case OP_MakeRecord: {
** like this:
**
** ------------------------------------------------------------------------
- ** | hdr-size | type 0 | type 1 | ... | type N-1 | data0 | ... | data N-1 |
+ ** | hdr-size | type 0 | type 1 | ... | type N-1 | data0 | ... | data N-1 |
** ------------------------------------------------------------------------
**
** Data(0) is taken from register P1. Data(1) comes from register P1+1
** and so forth.
**
- ** Each type field is a varint representing the serial type of the
+ ** Each type field is a varint representing the serial type of the
** corresponding data element (see sqlite3VdbeSerialType()). The
** hdr-size field is also a varint which is the offset from the beginning
** of the record to data0.
@@ -92336,7 +88380,9 @@ case OP_MakeRecord: {
** Give such values a special internal-use-only serial-type of 10
** so that they can be passed through to xUpdate and have
** a true sqlite3_value_nochange(). */
+#ifndef SQLITE_ENABLE_NULL_TRIM
assert( pOp->p5==OPFLAG_NOCHNG_MAGIC || CORRUPT_DB );
+#endif
pRec->uTemp = 10;
}else{
pRec->uTemp = 0;
@@ -92435,7 +88481,7 @@ case OP_MakeRecord: {
}
nByte = nHdr+nData;
- /* Make sure the output register has a buffer large enough to store
+ /* Make sure the output register has a buffer large enough to store
** the new record. The output register (pOp->p3) is not allowed to
** be one of the input registers (because the following call to
** sqlite3VdbeMemClearAndResize() could clobber the value before it is used).
@@ -92485,13 +88531,16 @@ case OP_MakeRecord: {
break;
}
-/* Opcode: Count P1 P2 * * *
+/* Opcode: Count P1 P2 p3 * *
** Synopsis: r[P2]=count()
**
-** Store the number of entries (an integer value) in the table or index
-** opened by cursor P1 in register P2
+** Store the number of entries (an integer value) in the table or index
+** opened by cursor P1 in register P2.
+**
+** If P3==0, then an exact count is obtained, which involves visiting
+** every btree page of the table. But if P3 is non-zero, an estimate
+** is returned based on the current cursor position.
*/
-#ifndef SQLITE_OMIT_BTREECOUNT
case OP_Count: { /* out2 */
i64 nEntry;
BtCursor *pCrsr;
@@ -92499,14 +88548,17 @@ case OP_Count: { /* out2 */
assert( p->apCsr[pOp->p1]->eCurType==CURTYPE_BTREE );
pCrsr = p->apCsr[pOp->p1]->uc.pCursor;
assert( pCrsr );
- nEntry = 0; /* Not needed. Only used to silence a warning. */
- rc = sqlite3BtreeCount(db, pCrsr, &nEntry);
- if( rc ) goto abort_due_to_error;
+ if( pOp->p3 ){
+ nEntry = sqlite3BtreeRowCountEst(pCrsr);
+ }else{
+ nEntry = 0; /* Not needed. Only used to silence a warning. */
+ rc = sqlite3BtreeCount(db, pCrsr, &nEntry);
+ if( rc ) goto abort_due_to_error;
+ }
pOut = out2Prerelease(p, pOp);
pOut->u.i = nEntry;
goto check_for_interrupt;
}
-#endif
/* Opcode: Savepoint P1 * * P4 *
**
@@ -92529,7 +88581,7 @@ case OP_Savepoint: {
zName = pOp->p4.z;
/* Assert that the p1 parameter is valid. Also that if there is no open
- ** transaction, then there cannot be any savepoints.
+ ** transaction, then there cannot be any savepoints.
*/
assert( db->pSavepoint==0 || db->autoCommit==0 );
assert( p1==SAVEPOINT_BEGIN||p1==SAVEPOINT_RELEASE||p1==SAVEPOINT_ROLLBACK );
@@ -92539,7 +88591,7 @@ case OP_Savepoint: {
if( p1==SAVEPOINT_BEGIN ){
if( db->nVdbeWrite>0 ){
- /* A new savepoint cannot be created if there are active write
+ /* A new savepoint cannot be created if there are active write
** statements (i.e. open read/write incremental blob handles).
*/
sqlite3VdbeError(p, "cannot open savepoint - SQL statements in progress");
@@ -92563,7 +88615,7 @@ case OP_Savepoint: {
if( pNew ){
pNew->zName = (char *)&pNew[1];
memcpy(pNew->zName, zName, nName+1);
-
+
/* If there is no open transaction, then mark this as a special
** "transaction savepoint". */
if( db->autoCommit ){
@@ -92587,7 +88639,7 @@ case OP_Savepoint: {
/* Find the named savepoint. If there is no such savepoint, then an
** an error is returned to the user. */
for(
- pSavepoint = db->pSavepoint;
+ pSavepoint = db->pSavepoint;
pSavepoint && sqlite3StrICmp(pSavepoint->zName, zName);
pSavepoint = pSavepoint->pNext
){
@@ -92597,7 +88649,7 @@ case OP_Savepoint: {
sqlite3VdbeError(p, "no such savepoint: %s", zName);
rc = SQLITE_ERROR;
}else if( db->nVdbeWrite>0 && p1==SAVEPOINT_RELEASE ){
- /* It is not possible to release (commit) a savepoint if there are
+ /* It is not possible to release (commit) a savepoint if there are
** active write statements.
*/
sqlite3VdbeError(p, "cannot release savepoint - "
@@ -92606,8 +88658,8 @@ case OP_Savepoint: {
}else{
/* Determine whether or not this is a transaction savepoint. If so,
- ** and this is a RELEASE command, then the current transaction
- ** is committed.
+ ** and this is a RELEASE command, then the current transaction
+ ** is committed.
*/
int isTransaction = pSavepoint->pNext==0 && db->isTransactionSavepoint;
if( isTransaction && p1==SAVEPOINT_RELEASE ){
@@ -92621,8 +88673,12 @@ case OP_Savepoint: {
p->rc = rc = SQLITE_BUSY;
goto vdbe_return;
}
- db->isTransactionSavepoint = 0;
rc = p->rc;
+ if( rc ){
+ db->autoCommit = 0;
+ }else{
+ db->isTransactionSavepoint = 0;
+ }
}else{
int isSchemaChange;
iSavepoint = db->nSavepoint - iSavepoint - 1;
@@ -92650,8 +88706,9 @@ case OP_Savepoint: {
db->mDbFlags |= DBFLAG_SchemaChange;
}
}
-
- /* Regardless of whether this is a RELEASE or ROLLBACK, destroy all
+ if( rc ) goto abort_due_to_error;
+
+ /* Regardless of whether this is a RELEASE or ROLLBACK, destroy all
** savepoints nested inside of the savepoint being operated on. */
while( db->pSavepoint!=pSavepoint ){
pTmp = db->pSavepoint;
@@ -92660,8 +88717,8 @@ case OP_Savepoint: {
db->nSavepoint--;
}
- /* If it is a RELEASE, then destroy the savepoint being operated on
- ** too. If it is a ROLLBACK TO, then set the number of deferred
+ /* If it is a RELEASE, then destroy the savepoint being operated on
+ ** too. If it is a ROLLBACK TO, then set the number of deferred
** constraint violations present in the database to the value stored
** when the savepoint was created. */
if( p1==SAVEPOINT_RELEASE ){
@@ -92715,7 +88772,7 @@ case OP_AutoCommit: {
db->autoCommit = 1;
}else if( desiredAutoCommit && db->nVdbeWrite>0 ){
/* If this instruction implements a COMMIT and other VMs are writing
- ** return an error indicating that the other VMs must complete first.
+ ** return an error indicating that the other VMs must complete first.
*/
sqlite3VdbeError(p, "cannot commit transaction - "
"SQL statements in progress");
@@ -92744,7 +88801,7 @@ case OP_AutoCommit: {
(!desiredAutoCommit)?"cannot start a transaction within a transaction":(
(iRollback)?"cannot rollback - no transaction is active":
"cannot commit - no transaction is active"));
-
+
rc = SQLITE_ERROR;
goto abort_due_to_error;
}
@@ -92755,7 +88812,7 @@ case OP_AutoCommit: {
**
** Begin a transaction on database P1 if a transaction is not already
** active.
-** If P2 is non-zero, then a write-transaction is started, or if a
+** If P2 is non-zero, then a write-transaction is started, or if a
** read-transaction is already active, it is upgraded to a write-transaction.
** If P2 is zero, then a read-transaction is started.
**
@@ -92814,12 +88871,12 @@ case OP_Transaction: {
if( p->usesStmtJournal
&& pOp->p2
- && (db->autoCommit==0 || db->nVdbeRead>1)
+ && (db->autoCommit==0 || db->nVdbeRead>1)
){
assert( sqlite3BtreeIsInTrans(pBt) );
if( p->iStatement==0 ){
assert( db->nStatement>=0 && db->nSavepoint>=0 );
- db->nStatement++;
+ db->nStatement++;
p->iStatement = db->nSavepoint + db->nStatement;
}
@@ -92847,7 +88904,7 @@ case OP_Transaction: {
*/
sqlite3DbFree(db, p->zErrMsg);
p->zErrMsg = sqlite3DbStrDup(db, "database schema has changed");
- /* If the schema-cookie from the database file matches the cookie
+ /* If the schema-cookie from the database file matches the cookie
** stored with the in-memory representation of the schema, do
** not reload the schema from the database file.
**
@@ -92857,7 +88914,7 @@ case OP_Transaction: {
** prepared queries. If such a query is out-of-date, we do not want to
** discard the database schema, as the user code implementing the
** v-table would have to be ready for the sqlite3_vtab structure itself
- ** to be invalidated whenever sqlite3_step() is called from within
+ ** to be invalidated whenever sqlite3_step() is called from within
** a v-table method.
*/
if( db->aDb[pOp->p1].pSchema->schema_cookie!=iMeta ){
@@ -92901,15 +88958,20 @@ case OP_ReadCookie: { /* out2 */
break;
}
-/* Opcode: SetCookie P1 P2 P3 * *
+/* Opcode: SetCookie P1 P2 P3 * P5
**
** Write the integer value P3 into cookie number P2 of database P1.
** P2==1 is the schema version. P2==2 is the database format.
-** P2==3 is the recommended pager cache
-** size, and so forth. P1==0 is the main database file and P1==1 is the
+** P2==3 is the recommended pager cache
+** size, and so forth. P1==0 is the main database file and P1==1 is the
** database file used to store temporary tables.
**
** A transaction must be started before executing this opcode.
+**
+** If P2 is the SCHEMA_VERSION cookie (cookie number 1) then the internal
+** schema version is set to P3-P5. The "PRAGMA schema_version=N" statement
+** has P5 set to 1, so that the internal schema version will be different
+** from the database schema version, resulting in a schema reset.
*/
case OP_SetCookie: {
Db *pDb;
@@ -92926,7 +88988,7 @@ case OP_SetCookie: {
rc = sqlite3BtreeUpdateMeta(pDb->pBt, pOp->p2, pOp->p3);
if( pOp->p2==BTREE_SCHEMA_VERSION ){
/* When the schema cookie changes, record the new cookie internally */
- pDb->pSchema->schema_cookie = pOp->p3;
+ pDb->pSchema->schema_cookie = pOp->p3 - pOp->p5;
db->mDbFlags |= DBFLAG_SchemaChange;
}else if( pOp->p2==BTREE_FILE_FORMAT ){
/* Record changes in the file format */
@@ -92946,8 +89008,8 @@ case OP_SetCookie: {
** Synopsis: root=P2 iDb=P3
**
** Open a read-only cursor for the database table whose root page is
-** P2 in a database file. The database file is determined by P3.
-** P3==0 means the main database, P3==1 means the database used for
+** P2 in a database file. The database file is determined by P3.
+** P3==0 means the main database, P3==1 means the database used for
** temporary tables, and P3>1 means used the corresponding attached
** database. Give the new cursor an identifier of P1. The P1
** values need not be contiguous but all P1 values should be small integers.
@@ -92957,14 +89019,14 @@ case OP_SetCookie: {
**
** - 0x02 OPFLAG_SEEKEQ: This cursor will only be used for
** equality lookups (implemented as a pair of opcodes OP_SeekGE/OP_IdxGT
-** of OP_SeekLE/OP_IdxGT)
+** of OP_SeekLE/OP_IdxLT)
**
**
** The P4 value may be either an integer (P4_INT32) or a pointer to
-** a KeyInfo structure (P4_KEYINFO). If it is a pointer to a KeyInfo
+** a KeyInfo structure (P4_KEYINFO). If it is a pointer to a KeyInfo
** object, then table being opened must be an [index b-tree] where the
-** KeyInfo object defines the content and collating
-** sequence of that index b-tree. Otherwise, if P4 is an integer
+** KeyInfo object defines the content and collating
+** sequence of that index b-tree. Otherwise, if P4 is an integer
** value, then the table being opened must be a [table b-tree] with a
** number of columns no less than the value of P4.
**
@@ -92987,7 +89049,7 @@ case OP_SetCookie: {
**
** - 0x02 OPFLAG_SEEKEQ: This cursor will only be used for
** equality lookups (implemented as a pair of opcodes OP_SeekGE/OP_IdxGT
-** of OP_SeekLE/OP_IdxGT)
+** of OP_SeekLE/OP_IdxLT)
**
**
** See also: OP_OpenRead, OP_OpenWrite
@@ -93000,10 +89062,10 @@ case OP_SetCookie: {
** OPFLAG_P2ISREG bit is set in P5 - see below).
**
** The P4 value may be either an integer (P4_INT32) or a pointer to
-** a KeyInfo structure (P4_KEYINFO). If it is a pointer to a KeyInfo
+** a KeyInfo structure (P4_KEYINFO). If it is a pointer to a KeyInfo
** object, then table being opened must be an [index b-tree] where the
-** KeyInfo object defines the content and collating
-** sequence of that index b-tree. Otherwise, if P4 is an integer
+** KeyInfo object defines the content and collating
+** sequence of that index b-tree. Otherwise, if P4 is an integer
** value, then the table being opened must be a [table b-tree] with a
** number of columns no less than the value of P4.
**
@@ -93011,7 +89073,7 @@ case OP_SetCookie: {
**
** - 0x02 OPFLAG_SEEKEQ: This cursor will only be used for
** equality lookups (implemented as a pair of opcodes OP_SeekGE/OP_IdxGT
-** of OP_SeekLE/OP_IdxGT)
+** of OP_SeekLE/OP_IdxLT)
**
- 0x08 OPFLAG_FORDELETE: This cursor is used only to seek
** and subsequently delete entries in an index btree. This is a
** hint to the storage engine that the storage engine is allowed to
@@ -93029,7 +89091,7 @@ case OP_SetCookie: {
case OP_ReopenIdx: {
int nField;
KeyInfo *pKeyInfo;
- int p2;
+ u32 p2;
int iDb;
int wrFlag;
Btree *pX;
@@ -93060,7 +89122,7 @@ case OP_OpenWrite:
nField = 0;
pKeyInfo = 0;
- p2 = pOp->p2;
+ p2 = (u32)pOp->p2;
iDb = pOp->p3;
assert( iDb>=0 && iDbnDb );
assert( DbMaskTest(p->btreeMask, iDb) );
@@ -93079,7 +89141,7 @@ case OP_OpenWrite:
}
if( pOp->p5 & OPFLAG_P2ISREG ){
assert( p2>0 );
- assert( p2<=(p->nMem+1 - p->nCursor) );
+ assert( p2<=(u32)(p->nMem+1 - p->nCursor) );
assert( pOp->opcode==OP_OpenWrite );
pIn2 = &aMem[p2];
assert( memIsValid(pIn2) );
@@ -93116,16 +89178,14 @@ case OP_OpenWrite:
/* Set the VdbeCursor.isTable variable. Previous versions of
** SQLite used to check if the root-page flags were sane at this point
** and report database corruption if they were not, but this check has
- ** since moved into the btree layer. */
+ ** since moved into the btree layer. */
pCur->isTable = pOp->p4type!=P4_KEYINFO;
open_cursor_set_hints:
assert( OPFLAG_BULKCSR==BTREE_BULKLOAD );
assert( OPFLAG_SEEKEQ==BTREE_SEEK_EQ );
testcase( pOp->p5 & OPFLAG_BULKCSR );
-#ifdef SQLITE_ENABLE_CURSOR_HINTS
testcase( pOp->p2 & OPFLAG_SEEKEQ );
-#endif
sqlite3BtreeCursorHintFlags(pCur->uc.pCursor,
(pOp->p5 & (OPFLAG_BULKCSR|OPFLAG_SEEKEQ)));
if( rc ) goto abort_due_to_error;
@@ -93145,6 +89205,7 @@ case OP_OpenDup: {
VdbeCursor *pCx; /* The new cursor */
pOrig = p->apCsr[pOp->p2];
+ assert( pOrig );
assert( pOrig->pBtx!=0 ); /* Only ephemeral cursors can be duplicated */
pCx = allocateCursor(p, pOp->p1, pOrig->nField, -1, CURTYPE_BTREE);
@@ -93169,7 +89230,7 @@ case OP_OpenDup: {
** Synopsis: nColumn=P2
**
** Open a new cursor P1 to a transient table.
-** The cursor is always opened read/write even if
+** The cursor is always opened read/write even if
** the main database is read-only. The ephemeral
** table is deleted automatically when the cursor is closed.
**
@@ -93194,12 +89255,12 @@ case OP_OpenDup: {
** by this opcode will be used for automatically created transient
** indices in joins.
*/
-case OP_OpenAutoindex:
+case OP_OpenAutoindex:
case OP_OpenEphemeral: {
VdbeCursor *pCx;
KeyInfo *pKeyInfo;
- static const int vfsFlags =
+ static const int vfsFlags =
SQLITE_OPEN_READWRITE |
SQLITE_OPEN_CREATE |
SQLITE_OPEN_EXCLUSIVE |
@@ -93208,20 +89269,18 @@ case OP_OpenEphemeral: {
assert( pOp->p1>=0 );
assert( pOp->p2>=0 );
pCx = p->apCsr[pOp->p1];
- if( pCx ){
+ if( pCx && pCx->pBtx ){
/* If the ephermeral table is already open, erase all existing content
** so that the table is empty again, rather than creating a new table. */
assert( pCx->isEphemeral );
pCx->seqCount = 0;
pCx->cacheStatus = CACHE_STALE;
- if( pCx->pBtx ){
- rc = sqlite3BtreeClearTable(pCx->pBtx, pCx->pgnoRoot, 0);
- }
+ rc = sqlite3BtreeClearTable(pCx->pBtx, pCx->pgnoRoot, 0);
}else{
pCx = allocateCursor(p, pOp->p1, pOp->p2, -1, CURTYPE_BTREE);
if( pCx==0 ) goto no_mem;
pCx->isEphemeral = 1;
- rc = sqlite3BtreeOpen(db->pVfs, 0, db, &pCx->pBtx,
+ rc = sqlite3BtreeOpen(db->pVfs, 0, db, &pCx->pBtx,
BTREE_OMIT_JOURNAL | BTREE_SINGLE | pOp->p5,
vfsFlags);
if( rc==SQLITE_OK ){
@@ -93235,10 +89294,10 @@ case OP_OpenEphemeral: {
*/
if( (pCx->pKeyInfo = pKeyInfo = pOp->p4.pKeyInfo)!=0 ){
assert( pOp->p4type==P4_KEYINFO );
- rc = sqlite3BtreeCreateTable(pCx->pBtx, (int*)&pCx->pgnoRoot,
- BTREE_BLOBKEY | pOp->p5);
+ rc = sqlite3BtreeCreateTable(pCx->pBtx, &pCx->pgnoRoot,
+ BTREE_BLOBKEY | pOp->p5);
if( rc==SQLITE_OK ){
- assert( pCx->pgnoRoot==MASTER_ROOT+1 );
+ assert( pCx->pgnoRoot==SCHEMA_ROOT+1 );
assert( pKeyInfo->db==db );
assert( pKeyInfo->enc==ENC(db) );
rc = sqlite3BtreeCursor(pCx->pBtx, pCx->pgnoRoot, BTREE_WRCSR,
@@ -93246,8 +89305,8 @@ case OP_OpenEphemeral: {
}
pCx->isTable = 0;
}else{
- pCx->pgnoRoot = MASTER_ROOT;
- rc = sqlite3BtreeCursor(pCx->pBtx, MASTER_ROOT, BTREE_WRCSR,
+ pCx->pgnoRoot = SCHEMA_ROOT;
+ rc = sqlite3BtreeCursor(pCx->pBtx, SCHEMA_ROOT, BTREE_WRCSR,
0, pCx->uc.pCursor);
pCx->isTable = 1;
}
@@ -93307,7 +89366,7 @@ case OP_SequenceTest: {
**
** Open a new cursor that points to a fake table that contains a single
** row of data. The content of that one row is the content of memory
-** register P2. In other words, cursor P1 becomes an alias for the
+** register P2. In other words, cursor P1 becomes an alias for the
** MEM_Blob content contained in register P2.
**
** A pseudo-table created by this opcode is used to hold a single
@@ -93372,21 +89431,23 @@ case OP_ColumnsUsed: {
/* Opcode: SeekGE P1 P2 P3 P4 *
** Synopsis: key=r[P3@P4]
**
-** If cursor P1 refers to an SQL table (B-Tree that uses integer keys),
-** use the value in register P3 as the key. If cursor P1 refers
-** to an SQL index, then P3 is the first in an array of P4 registers
-** that are used as an unpacked index key.
+** If cursor P1 refers to an SQL table (B-Tree that uses integer keys),
+** use the value in register P3 as the key. If cursor P1 refers
+** to an SQL index, then P3 is the first in an array of P4 registers
+** that are used as an unpacked index key.
**
-** Reposition cursor P1 so that it points to the smallest entry that
-** is greater than or equal to the key value. If there are no records
+** Reposition cursor P1 so that it points to the smallest entry that
+** is greater than or equal to the key value. If there are no records
** greater than or equal to the key and P2 is not zero, then jump to P2.
**
** If the cursor P1 was opened using the OPFLAG_SEEKEQ flag, then this
-** opcode will always land on a record that equally equals the key, or
-** else jump immediately to P2. When the cursor is OPFLAG_SEEKEQ, this
-** opcode must be followed by an IdxLE opcode with the same arguments.
-** The IdxLE opcode will be skipped if this opcode succeeds, but the
-** IdxLE opcode will be used on subsequent loop iterations.
+** opcode will either land on a record that exactly matches the key, or
+** else it will cause a jump to P2. When the cursor is OPFLAG_SEEKEQ,
+** this opcode must be followed by an IdxLE opcode with the same arguments.
+** The IdxGT opcode will be skipped if this opcode succeeds, but the
+** IdxGT opcode will be used on subsequent loop iterations. The
+** OPFLAG_SEEKEQ flags is a hint to the btree layer to say that this
+** is an equality search.
**
** This opcode leaves the cursor configured to move in forward order,
** from the beginning toward the end. In other words, the cursor is
@@ -93397,13 +89458,13 @@ case OP_ColumnsUsed: {
/* Opcode: SeekGT P1 P2 P3 P4 *
** Synopsis: key=r[P3@P4]
**
-** If cursor P1 refers to an SQL table (B-Tree that uses integer keys),
-** use the value in register P3 as a key. If cursor P1 refers
-** to an SQL index, then P3 is the first in an array of P4 registers
-** that are used as an unpacked index key.
+** If cursor P1 refers to an SQL table (B-Tree that uses integer keys),
+** use the value in register P3 as a key. If cursor P1 refers
+** to an SQL index, then P3 is the first in an array of P4 registers
+** that are used as an unpacked index key.
**
-** Reposition cursor P1 so that it points to the smallest entry that
-** is greater than the key value. If there are no records greater than
+** Reposition cursor P1 so that it points to the smallest entry that
+** is greater than the key value. If there are no records greater than
** the key and P2 is not zero, then jump to P2.
**
** This opcode leaves the cursor configured to move in forward order,
@@ -93412,16 +89473,16 @@ case OP_ColumnsUsed: {
**
** See also: Found, NotFound, SeekLt, SeekGe, SeekLe
*/
-/* Opcode: SeekLT P1 P2 P3 P4 *
+/* Opcode: SeekLT P1 P2 P3 P4 *
** Synopsis: key=r[P3@P4]
**
-** If cursor P1 refers to an SQL table (B-Tree that uses integer keys),
-** use the value in register P3 as a key. If cursor P1 refers
-** to an SQL index, then P3 is the first in an array of P4 registers
-** that are used as an unpacked index key.
+** If cursor P1 refers to an SQL table (B-Tree that uses integer keys),
+** use the value in register P3 as a key. If cursor P1 refers
+** to an SQL index, then P3 is the first in an array of P4 registers
+** that are used as an unpacked index key.
**
-** Reposition cursor P1 so that it points to the largest entry that
-** is less than the key value. If there are no records less than
+** Reposition cursor P1 so that it points to the largest entry that
+** is less than the key value. If there are no records less than
** the key and P2 is not zero, then jump to P2.
**
** This opcode leaves the cursor configured to move in reverse order,
@@ -93433,13 +89494,13 @@ case OP_ColumnsUsed: {
/* Opcode: SeekLE P1 P2 P3 P4 *
** Synopsis: key=r[P3@P4]
**
-** If cursor P1 refers to an SQL table (B-Tree that uses integer keys),
-** use the value in register P3 as a key. If cursor P1 refers
-** to an SQL index, then P3 is the first in an array of P4 registers
-** that are used as an unpacked index key.
+** If cursor P1 refers to an SQL table (B-Tree that uses integer keys),
+** use the value in register P3 as a key. If cursor P1 refers
+** to an SQL index, then P3 is the first in an array of P4 registers
+** that are used as an unpacked index key.
**
-** Reposition cursor P1 so that it points to the largest entry that
-** is less than or equal to the key value. If there are no records
+** Reposition cursor P1 so that it points to the largest entry that
+** is less than or equal to the key value. If there are no records
** less than or equal to the key and P2 is not zero, then jump to P2.
**
** This opcode leaves the cursor configured to move in reverse order,
@@ -93447,11 +89508,13 @@ case OP_ColumnsUsed: {
** configured to use Prev, not Next.
**
** If the cursor P1 was opened using the OPFLAG_SEEKEQ flag, then this
-** opcode will always land on a record that equally equals the key, or
-** else jump immediately to P2. When the cursor is OPFLAG_SEEKEQ, this
-** opcode must be followed by an IdxGE opcode with the same arguments.
+** opcode will either land on a record that exactly matches the key, or
+** else it will cause a jump to P2. When the cursor is OPFLAG_SEEKEQ,
+** this opcode must be followed by an IdxLE opcode with the same arguments.
** The IdxGE opcode will be skipped if this opcode succeeds, but the
-** IdxGE opcode will be used on subsequent loop iterations.
+** IdxGE opcode will be used on subsequent loop iterations. The
+** OPFLAG_SEEKEQ flags is a hint to the btree layer to say that this
+** is an equality search.
**
** See also: Found, NotFound, SeekGt, SeekGe, SeekLt
*/
@@ -93488,7 +89551,7 @@ case OP_SeekGT: { /* jump, in3, group */
pC->cacheStatus = CACHE_STALE;
if( pC->isTable ){
u16 flags3, newType;
- /* The BTREE_SEEK_EQ flag is only set on index cursors */
+ /* The OPFLAG_SEEKEQ/BTREE_SEEK_EQ flag is only set on index cursors */
assert( sqlite3BtreeCursorHasHint(pC->uc.pCursor, BTREE_SEEK_EQ)==0
|| CORRUPT_DB );
@@ -93547,14 +89610,17 @@ case OP_SeekGT: { /* jump, in3, group */
goto abort_due_to_error;
}
}else{
- /* For a cursor with the BTREE_SEEK_EQ hint, only the OP_SeekGE and
- ** OP_SeekLE opcodes are allowed, and these must be immediately followed
- ** by an OP_IdxGT or OP_IdxLT opcode, respectively, with the same key.
+ /* For a cursor with the OPFLAG_SEEKEQ/BTREE_SEEK_EQ hint, only the
+ ** OP_SeekGE and OP_SeekLE opcodes are allowed, and these must be
+ ** immediately followed by an OP_IdxGT or OP_IdxLT opcode, respectively,
+ ** with the same key.
*/
if( sqlite3BtreeCursorHasHint(pC->uc.pCursor, BTREE_SEEK_EQ) ){
eqOnly = 1;
assert( pOp->opcode==OP_SeekGE || pOp->opcode==OP_SeekLE );
assert( pOp[1].opcode==OP_IdxLT || pOp[1].opcode==OP_IdxGT );
+ assert( pOp->opcode==OP_SeekGE || pOp[1].opcode==OP_IdxLT );
+ assert( pOp->opcode==OP_SeekLE || pOp[1].opcode==OP_IdxGT );
assert( pOp[1].p1==pOp[0].p1 );
assert( pOp[1].p2==pOp[0].p2 );
assert( pOp[1].p3==pOp[0].p3 );
@@ -93663,6 +89729,20 @@ case OP_SeekHit: {
break;
}
+/* Opcode: IfNotOpen P1 P2 * * *
+** Synopsis: if( !csr[P1] ) goto P2
+**
+** If cursor P1 is not open, jump to instruction P2. Otherwise, fall through.
+*/
+case OP_IfNotOpen: { /* jump */
+ assert( pOp->p1>=0 && pOp->p1nCursor );
+ VdbeBranchTaken(p->apCsr[pOp->p1]==0, 2);
+ if( !p->apCsr[pOp->p1] ){
+ goto jump_to_p2_and_check_for_interrupt;
+ }
+ break;
+}
+
/* Opcode: Found P1 P2 P3 P4 *
** Synopsis: key=r[P3@P4]
**
@@ -93686,9 +89766,9 @@ case OP_SeekHit: {
** If P4==0 then register P3 holds a blob constructed by MakeRecord. If
** P4>0 then register P3 is the first of P4 registers that form an unpacked
** record.
-**
+**
** Cursor P1 is on an index btree. If the record identified by P3 and P4
-** is not the prefix of any entry in P1 then a jump is made to P2. If P1
+** is not the prefix of any entry in P1 then a jump is made to P2. If P1
** does contain an entry whose prefix matches the P3/P4 record then control
** falls through to the next instruction and P1 is left pointing at the
** matching entry.
@@ -93732,7 +89812,7 @@ case OP_SeekHit: {
** If P4==0 then register P3 holds a blob constructed by MakeRecord. If
** P4>0 then register P3 is the first of P4 registers that form an unpacked
** record.
-**
+**
** Cursor P1 is on an index btree. If the record identified by P3 and P4
** contains any NULL value, jump immediately to P2. If all terms of the
** record are not-NULL then a check is done to determine if any row in the
@@ -93756,6 +89836,7 @@ case OP_IfNoHope: { /* jump, in3 */
assert( pC!=0 );
if( pC->seekHit ) break;
/* Fall through into OP_NotFound */
+ /* no break */ deliberate_fall_through
}
case OP_NoConflict: /* jump, in3 */
case OP_NotFound: /* jump, in3 */
@@ -93844,9 +89925,9 @@ case OP_Found: { /* jump, in3 */
**
** P1 is the index of a cursor open on an SQL table btree (with integer
** keys). If register P3 does not contain an integer or if P1 does not
-** contain a record with rowid P3 then jump immediately to P2.
+** contain a record with rowid P3 then jump immediately to P2.
** Or, if P2 is 0, raise an SQLITE_CORRUPT error. If P1 does contain
-** a record with rowid P3 then
+** a record with rowid P3 then
** leave the cursor pointing at that record and fall through to the next
** instruction.
**
@@ -93869,7 +89950,7 @@ case OP_Found: { /* jump, in3 */
** P1 is the index of a cursor open on an SQL table btree (with integer
** keys). P3 is an integer rowid. If P1 does not contain a record with
** rowid P3 then jump immediately to P2. Or, if P2 is 0, raise an
-** SQLITE_CORRUPT error. If P1 does contain a record with rowid P3 then
+** SQLITE_CORRUPT error. If P1 does contain a record with rowid P3 then
** leave the cursor pointing at that record and fall through to the next
** instruction.
**
@@ -93910,6 +89991,7 @@ case OP_SeekRowid: { /* jump, in3 */
goto notExistsWithKey;
}
/* Fall through into OP_NotExists */
+ /* no break */ deliberate_fall_through
case OP_NotExists: /* jump, in3 */
pIn3 = &aMem[pOp->p3];
assert( (pIn3->flags & MEM_Int)!=0 || pOp->opcode==OP_SeekRowid );
@@ -93952,7 +90034,7 @@ notExistsWithKey:
** Find the next available sequence number for cursor P1.
** Write the sequence number into register P2.
** The sequence number on the cursor is incremented after this
-** instruction.
+** instruction.
*/
case OP_Sequence: { /* out2 */
assert( pOp->p1>=0 && pOp->p1nCursor );
@@ -93972,9 +90054,9 @@ case OP_Sequence: { /* out2 */
** table that cursor P1 points to. The new record number is written
** written to register P2.
**
-** If P3>0 then P3 is a register in the root frame of this VDBE that holds
+** If P3>0 then P3 is a register in the root frame of this VDBE that holds
** the largest previously generated record number. No new record numbers are
-** allowed to be less than this value. When this value reaches its maximum,
+** allowed to be less than this value. When this value reaches its maximum,
** an SQLITE_FULL error is generated. The P3 register is updated with the '
** generated record number. This P3 mechanism is used to help implement the
** AUTOINCREMENT feature.
@@ -94123,8 +90205,8 @@ case OP_NewRowid: { /* out2 */
** is part of an INSERT operation. The difference is only important to
** the update hook.
**
-** Parameter P4 may point to a Table structure, or may be NULL. If it is
-** not NULL, then the update-hook (sqlite3.xUpdateCallback) is invoked
+** Parameter P4 may point to a Table structure, or may be NULL. If it is
+** not NULL, then the update-hook (sqlite3.xUpdateCallback) is invoked
** following a successful insert.
**
** (WARNING/TODO: If P1 is a pseudo-cursor and P2 is dynamically
@@ -94151,6 +90233,7 @@ case OP_Insert: {
pC = p->apCsr[pOp->p1];
assert( pC!=0 );
assert( pC->eCurType==CURTYPE_BTREE );
+ assert( pC->deferredMoveto==0 );
assert( pC->uc.pCursor!=0 );
assert( (pOp->p5 & OPFLAG_ISNOOP) || pC->isTable );
assert( pOp->p4type==P4_TABLE || pOp->p4type>=P4_STATIC );
@@ -94225,7 +90308,7 @@ case OP_Insert: {
** the cursor will be left pointing at either the next or the previous
** record in the table. If it is left pointing at the next record, then
** the next Next instruction will be a no-op. As a result, in this case
-** it is ok to delete a record from within a Next loop. If
+** it is ok to delete a record from within a Next loop. If
** OPFLAG_SAVEPOSITION bit of P5 is clear, then the cursor will be
** left in an undefined state.
**
@@ -94241,11 +90324,11 @@ case OP_Insert: {
** P1 must not be pseudo-table. It has to be a real table with
** multiple rows.
**
-** If P4 is not NULL then it points to a Table object. In this case either
+** If P4 is not NULL then it points to a Table object. In this case either
** the update or pre-update hook, or both, may be invoked. The P1 cursor must
-** have been positioned using OP_NotFound prior to invoking this opcode in
-** this case. Specifically, if one is configured, the pre-update hook is
-** invoked if P4 is not NULL. The update-hook is invoked if one is configured,
+** have been positioned using OP_NotFound prior to invoking this opcode in
+** this case. Specifically, if one is configured, the pre-update hook is
+** invoked if P4 is not NULL. The update-hook is invoked if one is configured,
** P4 is not NULL, and the OPFLAG_NCHANGE flag is set in P2.
**
** If the OPFLAG_ISUPDATE flag is set in P2, then P3 contains the address
@@ -94268,7 +90351,11 @@ case OP_Delete: {
sqlite3VdbeIncrWriteCounter(p, pC);
#ifdef SQLITE_DEBUG
- if( pOp->p4type==P4_TABLE && HasRowid(pOp->p4.pTab) && pOp->p5==0 ){
+ if( pOp->p4type==P4_TABLE
+ && HasRowid(pOp->p4.pTab)
+ && pOp->p5==0
+ && sqlite3BtreeCursorIsValidNN(pC->uc.pCursor)
+ ){
/* If p5 is zero, the seek operation that positioned the cursor prior to
** OP_Delete will have also set the pC->movetoTarget field to the rowid of
** the row that is being deleted */
@@ -94280,7 +90367,7 @@ case OP_Delete: {
/* If the update-hook or pre-update-hook will be invoked, set zDb to
** the name of the db to pass as to it. Also set local pTab to a copy
** of p4.pTab. Finally, if p5 is true, indicating that this cursor was
- ** last moved with OP_Next or OP_Prev, not Seek or NotFound, set
+ ** last moved with OP_Next or OP_Prev, not Seek or NotFound, set
** VdbeCursor.movetoTarget to the current rowid. */
if( pOp->p4type==P4_TABLE && HAS_UPDATE_HOOK(db) ){
assert( pC->iDb>=0 );
@@ -94298,20 +90385,20 @@ case OP_Delete: {
#ifdef SQLITE_ENABLE_PREUPDATE_HOOK
/* Invoke the pre-update-hook if required. */
if( db->xPreUpdateCallback && pOp->p4.pTab ){
- assert( !(opflags & OPFLAG_ISUPDATE)
- || HasRowid(pTab)==0
- || (aMem[pOp->p3].flags & MEM_Int)
+ assert( !(opflags & OPFLAG_ISUPDATE)
+ || HasRowid(pTab)==0
+ || (aMem[pOp->p3].flags & MEM_Int)
);
sqlite3VdbePreUpdateHook(p, pC,
- (opflags & OPFLAG_ISUPDATE) ? SQLITE_UPDATE : SQLITE_DELETE,
+ (opflags & OPFLAG_ISUPDATE) ? SQLITE_UPDATE : SQLITE_DELETE,
zDb, pTab, pC->movetoTarget,
pOp->p3
);
}
if( opflags & OPFLAG_ISNOOP ) break;
#endif
-
- /* Only flags that can be set are SAVEPOISTION and AUXDELETE */
+
+ /* Only flags that can be set are SAVEPOISTION and AUXDELETE */
assert( (pOp->p5 & ~(OPFLAG_SAVEPOSITION|OPFLAG_AUXDELETE))==0 );
assert( OPFLAG_SAVEPOSITION==BTREE_SAVEPOSITION );
assert( OPFLAG_AUXDELETE==BTREE_AUXDELETE );
@@ -94364,7 +90451,7 @@ case OP_ResetCount: {
** Synopsis: if key(P1)!=trim(r[P3],P4) goto P2
**
** P1 is a sorter cursor. This instruction compares a prefix of the
-** record blob in register P3 against a prefix of the entry that
+** record blob in register P3 against a prefix of the entry that
** the sorter cursor currently points to. Only the first P4 fields
** of r[P3] and the sorter record are compared.
**
@@ -94422,10 +90509,10 @@ case OP_SorterData: {
/* Opcode: RowData P1 P2 P3 * *
** Synopsis: r[P2]=data
**
-** Write into register P2 the complete row content for the row at
+** Write into register P2 the complete row content for the row at
** which cursor P1 is currently pointing.
-** There is no interpretation of the data.
-** It is just copied onto the P2 register exactly as
+** There is no interpretation of the data.
+** It is just copied onto the P2 register exactly as
** it is found in the database file.
**
** If cursor P1 is an index, then the content is the key of the row.
@@ -94473,17 +90560,13 @@ case OP_RowData: {
*/
assert( pC->deferredMoveto==0 );
assert( sqlite3BtreeCursorIsValid(pCrsr) );
-#if 0 /* Not required due to the previous to assert() statements */
- rc = sqlite3VdbeCursorMoveto(pC);
- if( rc!=SQLITE_OK ) goto abort_due_to_error;
-#endif
n = sqlite3BtreePayloadSize(pCrsr);
if( n>(u32)db->aLimit[SQLITE_LIMIT_LENGTH] ){
goto too_big;
}
testcase( n==0 );
- rc = sqlite3VdbeMemFromBtree(pCrsr, 0, n, pOut);
+ rc = sqlite3VdbeMemFromBtreeZeroOffset(pCrsr, n, pOut);
if( rc ) goto abort_due_to_error;
if( !pOp->p3 ) Deephemeralize(pOut);
UPDATE_MAX_BLOBSIZE(pOut);
@@ -94578,7 +90661,7 @@ case OP_NullRow: {
*/
/* Opcode: Last P1 P2 * * *
**
-** The next use of the Rowid or Column or Prev instruction for P1
+** The next use of the Rowid or Column or Prev instruction for P1
** will refer to the last entry in the database table or index.
** If the table or index is empty and P2>0, then jump immediately to P2.
** If P2 is 0 or if the table or index is not empty, fall through
@@ -94680,13 +90763,14 @@ case OP_Sort: { /* jump */
#endif
p->aCounter[SQLITE_STMTSTATUS_SORT]++;
/* Fall through into OP_Rewind */
+ /* no break */ deliberate_fall_through
}
/* Opcode: Rewind P1 P2 * * *
**
-** The next use of the Rowid or Column or Next instruction for P1
+** The next use of the Rowid or Column or Next instruction for P1
** will refer to the first entry in the database table or index.
** If the table or index is empty, jump immediately to P2.
-** If the table or index is not empty, fall through to the following
+** If the table or index is not empty, fall through to the following
** instruction.
**
** This opcode leaves the cursor configured to move in forward order,
@@ -94856,19 +90940,11 @@ next_tail:
** run faster by avoiding an unnecessary seek on cursor P1. However,
** the OPFLAG_USESEEKRESULT flag must only be set if there have been no prior
** seeks on the cursor or if the most recent seek used a key equivalent
-** to P2.
+** to P2.
**
** This instruction only works for indices. The equivalent instruction
** for tables is OP_Insert.
*/
-/* Opcode: SorterInsert P1 P2 * * *
-** Synopsis: key=r[P2]
-**
-** Register P2 holds an SQL index key made using the
-** MakeRecord instructions. This opcode writes that key
-** into the sorter P1. Data for the entry is nil.
-*/
-case OP_SorterInsert: /* in2 */
case OP_IdxInsert: { /* in2 */
VdbeCursor *pC;
BtreePayload x;
@@ -94877,38 +90953,66 @@ case OP_IdxInsert: { /* in2 */
pC = p->apCsr[pOp->p1];
sqlite3VdbeIncrWriteCounter(p, pC);
assert( pC!=0 );
- assert( isSorter(pC)==(pOp->opcode==OP_SorterInsert) );
+ assert( !isSorter(pC) );
pIn2 = &aMem[pOp->p2];
assert( pIn2->flags & MEM_Blob );
if( pOp->p5 & OPFLAG_NCHANGE ) p->nChange++;
- assert( pC->eCurType==CURTYPE_BTREE || pOp->opcode==OP_SorterInsert );
+ assert( pC->eCurType==CURTYPE_BTREE );
assert( pC->isTable==0 );
rc = ExpandBlob(pIn2);
if( rc ) goto abort_due_to_error;
- if( pOp->opcode==OP_SorterInsert ){
- rc = sqlite3VdbeSorterWrite(pC, pIn2);
- }else{
- x.nKey = pIn2->n;
- x.pKey = pIn2->z;
- x.aMem = aMem + pOp->p3;
- x.nMem = (u16)pOp->p4.i;
- rc = sqlite3BtreeInsert(pC->uc.pCursor, &x,
- (pOp->p5 & (OPFLAG_APPEND|OPFLAG_SAVEPOSITION)),
- ((pOp->p5 & OPFLAG_USESEEKRESULT) ? pC->seekResult : 0)
- );
- assert( pC->deferredMoveto==0 );
- pC->cacheStatus = CACHE_STALE;
- }
+ x.nKey = pIn2->n;
+ x.pKey = pIn2->z;
+ x.aMem = aMem + pOp->p3;
+ x.nMem = (u16)pOp->p4.i;
+ rc = sqlite3BtreeInsert(pC->uc.pCursor, &x,
+ (pOp->p5 & (OPFLAG_APPEND|OPFLAG_SAVEPOSITION)),
+ ((pOp->p5 & OPFLAG_USESEEKRESULT) ? pC->seekResult : 0)
+ );
+ assert( pC->deferredMoveto==0 );
+ pC->cacheStatus = CACHE_STALE;
if( rc) goto abort_due_to_error;
break;
}
-/* Opcode: IdxDelete P1 P2 P3 * *
+/* Opcode: SorterInsert P1 P2 * * *
+** Synopsis: key=r[P2]
+**
+** Register P2 holds an SQL index key made using the
+** MakeRecord instructions. This opcode writes that key
+** into the sorter P1. Data for the entry is nil.
+*/
+case OP_SorterInsert: { /* in2 */
+ VdbeCursor *pC;
+
+ assert( pOp->p1>=0 && pOp->p1nCursor );
+ pC = p->apCsr[pOp->p1];
+ sqlite3VdbeIncrWriteCounter(p, pC);
+ assert( pC!=0 );
+ assert( isSorter(pC) );
+ pIn2 = &aMem[pOp->p2];
+ assert( pIn2->flags & MEM_Blob );
+ assert( pC->isTable==0 );
+ rc = ExpandBlob(pIn2);
+ if( rc ) goto abort_due_to_error;
+ rc = sqlite3VdbeSorterWrite(pC, pIn2);
+ if( rc) goto abort_due_to_error;
+ break;
+}
+
+/* Opcode: IdxDelete P1 P2 P3 * P5
** Synopsis: key=r[P2@P3]
**
** The content of P3 registers starting at register P2 form
-** an unpacked index key. This opcode removes that entry from the
+** an unpacked index key. This opcode removes that entry from the
** index opened by cursor P1.
+**
+** If P5 is not zero, then raise an SQLITE_CORRUPT_INDEX error
+** if no matching index entry is found. This happens when running
+** an UPDATE or DELETE statement and the index entry to be updated
+** or deleted is not found. For some uses of IdxDelete
+** (example: the EXCEPT operator) it does not matter that no matching
+** entry is found. For those cases, P5 is zero.
*/
case OP_IdxDelete: {
VdbeCursor *pC;
@@ -94925,7 +91029,6 @@ case OP_IdxDelete: {
sqlite3VdbeIncrWriteCounter(p, pC);
pCrsr = pC->uc.pCursor;
assert( pCrsr!=0 );
- assert( pOp->p5==0 );
r.pKeyInfo = pC->pKeyInfo;
r.nField = (u16)pOp->p3;
r.default_rc = 0;
@@ -94935,6 +91038,9 @@ case OP_IdxDelete: {
if( res==0 ){
rc = sqlite3BtreeDelete(pCrsr, BTREE_AUXDELETE);
if( rc ) goto abort_due_to_error;
+ }else if( pOp->p5 ){
+ rc = SQLITE_CORRUPT_INDEX;
+ goto abort_due_to_error;
}
assert( pC->deferredMoveto==0 );
pC->cacheStatus = CACHE_STALE;
@@ -94955,8 +91061,8 @@ case OP_IdxDelete: {
**
** P4 may be an array of integers (type P4_INTARRAY) containing
** one entry for each column in the P3 table. If array entry a(i)
-** is non-zero, then reading column a(i)-1 from cursor P3 is
-** equivalent to performing the deferred seek and then reading column i
+** is non-zero, then reading column a(i)-1 from cursor P3 is
+** equivalent to performing the deferred seek and then reading column i
** from P1. This information is stored in P3 and used to redirect
** reads against P3 over to P1, thus possibly avoiding the need to
** seek and read cursor P3.
@@ -95024,12 +91130,30 @@ case OP_IdxRowid: { /* out2 */
break;
}
+/* Opcode: FinishSeek P1 * * * *
+**
+** If cursor P1 was previously moved via OP_DeferredSeek, complete that
+** seek operation now, without further delay. If the cursor seek has
+** already occurred, this instruction is a no-op.
+*/
+case OP_FinishSeek: {
+ VdbeCursor *pC; /* The P1 index cursor */
+
+ assert( pOp->p1>=0 && pOp->p1nCursor );
+ pC = p->apCsr[pOp->p1];
+ if( pC->deferredMoveto ){
+ rc = sqlite3VdbeFinishMoveto(pC);
+ if( rc ) goto abort_due_to_error;
+ }
+ break;
+}
+
/* Opcode: IdxGE P1 P2 P3 P4 P5
** Synopsis: key=r[P3@P4]
**
-** The P4 register values beginning with P3 form an unpacked index
-** key that omits the PRIMARY KEY. Compare this key value against the index
-** that P1 is currently pointing to, ignoring the PRIMARY KEY or ROWID
+** The P4 register values beginning with P3 form an unpacked index
+** key that omits the PRIMARY KEY. Compare this key value against the index
+** that P1 is currently pointing to, ignoring the PRIMARY KEY or ROWID
** fields at the end.
**
** If the P1 index entry is greater than or equal to the key value
@@ -95038,9 +91162,9 @@ case OP_IdxRowid: { /* out2 */
/* Opcode: IdxGT P1 P2 P3 P4 P5
** Synopsis: key=r[P3@P4]
**
-** The P4 register values beginning with P3 form an unpacked index
-** key that omits the PRIMARY KEY. Compare this key value against the index
-** that P1 is currently pointing to, ignoring the PRIMARY KEY or ROWID
+** The P4 register values beginning with P3 form an unpacked index
+** key that omits the PRIMARY KEY. Compare this key value against the index
+** that P1 is currently pointing to, ignoring the PRIMARY KEY or ROWID
** fields at the end.
**
** If the P1 index entry is greater than the key value
@@ -95049,7 +91173,7 @@ case OP_IdxRowid: { /* out2 */
/* Opcode: IdxLT P1 P2 P3 P4 P5
** Synopsis: key=r[P3@P4]
**
-** The P4 register values beginning with P3 form an unpacked index
+** The P4 register values beginning with P3 form an unpacked index
** key that omits the PRIMARY KEY or ROWID. Compare this key value against
** the index that P1 is currently pointing to, ignoring the PRIMARY KEY or
** ROWID on the P1 index.
@@ -95060,7 +91184,7 @@ case OP_IdxRowid: { /* out2 */
/* Opcode: IdxLE P1 P2 P3 P4 P5
** Synopsis: key=r[P3@P4]
**
-** The P4 register values beginning with P3 form an unpacked index
+** The P4 register values beginning with P3 form an unpacked index
** key that omits the PRIMARY KEY or ROWID. Compare this key value against
** the index that P1 is currently pointing to, ignoring the PRIMARY KEY or
** ROWID on the P1 index.
@@ -95134,15 +91258,15 @@ case OP_IdxGE: { /* jump */
** root pages contiguous at the beginning of the database. The former
** value of the root page that moved - its value before the move occurred -
** is stored in register P2. If no page movement was required (because the
-** table being dropped was already the last one in the database) then a
-** zero is stored in register P2. If AUTOVACUUM is disabled then a zero
+** table being dropped was already the last one in the database) then a
+** zero is stored in register P2. If AUTOVACUUM is disabled then a zero
** is stored in register P2.
**
** This opcode throws an error if there are any active reader VMs when
-** it is invoked. This is done to avoid the difficulty associated with
-** updating existing cursors when a root page is moved in an AUTOVACUUM
-** database. This error is thrown even if the database is not an AUTOVACUUM
-** db in order to avoid introducing an incompatibility between autovacuum
+** it is invoked. This is done to avoid the difficulty associated with
+** updating existing cursors when a root page is moved in an AUTOVACUUM
+** database. This error is thrown even if the database is not an AUTOVACUUM
+** db in order to avoid introducing an incompatibility between autovacuum
** and non-autovacuum modes.
**
** See also: Clear
@@ -95191,8 +91315,8 @@ case OP_Destroy: { /* out2 */
** that is used to store tables create using CREATE TEMPORARY TABLE.
**
** If the P3 value is non-zero, then the table referred to must be an
-** intkey table (an SQL table, not an index). In this case the row change
-** count is incremented by the number of rows in the table being cleared.
+** intkey table (an SQL table, not an index). In this case the row change
+** count is incremented by the number of rows in the table being cleared.
** If P3 is greater than zero, then the value stored in register P3 is
** also incremented by the number of rows in the table being cleared.
**
@@ -95200,13 +91324,13 @@ case OP_Destroy: { /* out2 */
*/
case OP_Clear: {
int nChange;
-
+
sqlite3VdbeIncrWriteCounter(p, 0);
nChange = 0;
assert( p->readOnly==0 );
assert( DbMaskTest(p->btreeMask, pOp->p2) );
rc = sqlite3BtreeClearTable(
- db->aDb[pOp->p2].pBt, pOp->p1, (pOp->p3 ? &nChange : 0)
+ db->aDb[pOp->p2].pBt, (u32)pOp->p1, (pOp->p3 ? &nChange : 0)
);
if( pOp->p3 ){
p->nChange += nChange;
@@ -95230,7 +91354,7 @@ case OP_Clear: {
*/
case OP_ResetSorter: {
VdbeCursor *pC;
-
+
assert( pOp->p1>=0 && pOp->p1nCursor );
pC = p->apCsr[pOp->p1];
assert( pC!=0 );
@@ -95255,7 +91379,7 @@ case OP_ResetSorter: {
** The root page number of the new b-tree is stored in register P2.
*/
case OP_CreateBtree: { /* out2 */
- int pgno;
+ Pgno pgno;
Db *pDb;
sqlite3VdbeIncrWriteCounter(p, 0);
@@ -95288,7 +91412,7 @@ case OP_SqlExec: {
/* Opcode: ParseSchema P1 * * P4 *
**
-** Read and parse all entries from the SQLITE_MASTER table of database P1
+** Read and parse all entries from the schema table of database P1
** that match the WHERE clause P4. If P4 is a NULL pointer, then the
** entire schema for P1 is reparsed.
**
@@ -95297,12 +91421,12 @@ case OP_SqlExec: {
*/
case OP_ParseSchema: {
int iDb;
- const char *zMaster;
+ const char *zSchema;
char *zSql;
InitData initData;
/* Any prepared statement that invokes this opcode will hold mutexes
- ** on every btree. This is a prerequisite for invoking
+ ** on every btree. This is a prerequisite for invoking
** sqlite3InitCallback().
*/
#ifdef SQLITE_DEBUG
@@ -95325,14 +91449,15 @@ case OP_ParseSchema: {
}else
#endif
{
- zMaster = MASTER_NAME;
+ zSchema = DFLT_SCHEMA_TABLE;
initData.db = db;
initData.iDb = iDb;
initData.pzErrMsg = &p->zErrMsg;
initData.mInitFlags = 0;
+ initData.mxPage = sqlite3BtreeLastPage(db->aDb[iDb].pBt);
zSql = sqlite3MPrintf(db,
"SELECT*FROM\"%w\".%s WHERE %s ORDER BY rowid",
- db->aDb[iDb].zDbSName, zMaster, pOp->p4.z);
+ db->aDb[iDb].zDbSName, zSchema, pOp->p4.z);
if( zSql==0 ){
rc = SQLITE_NOMEM_BKPT;
}else{
@@ -95346,7 +91471,7 @@ case OP_ParseSchema: {
if( rc==SQLITE_OK && initData.nInitRow==0 ){
/* The OP_ParseSchema opcode with a non-NULL P4 argument should parse
** at least one SQL statement. Any less than that indicates that
- ** the sqlite_master table is corrupt. */
+ ** the sqlite_schema table is corrupt. */
rc = SQLITE_CORRUPT_BKPT;
}
sqlite3DbFreeNN(db, zSql);
@@ -95360,7 +91485,7 @@ case OP_ParseSchema: {
}
goto abort_due_to_error;
}
- break;
+ break;
}
#if !defined(SQLITE_OMIT_ANALYZE)
@@ -95374,7 +91499,7 @@ case OP_LoadAnalysis: {
assert( pOp->p1>=0 && pOp->p1nDb );
rc = sqlite3AnalysisLoad(db, pOp->p1);
if( rc ) goto abort_due_to_error;
- break;
+ break;
}
#endif /* !defined(SQLITE_OMIT_ANALYZE) */
@@ -95382,7 +91507,7 @@ case OP_LoadAnalysis: {
**
** Remove the internal (in-memory) data structures that describe
** the table named P4 in database P1. This is called after a table
-** is dropped from disk (using the Destroy opcode) in order to keep
+** is dropped from disk (using the Destroy opcode) in order to keep
** the internal representation of the
** schema consistent with what is on disk.
*/
@@ -95410,7 +91535,7 @@ case OP_DropIndex: {
**
** Remove the internal (in-memory) data structures that describe
** the trigger named P4 in database P1. This is called after a trigger
-** is dropped from disk (using the Destroy opcode) in order to keep
+** is dropped from disk (using the Destroy opcode) in order to keep
** the internal representation of the
** schema consistent with what is on disk.
*/
@@ -95430,7 +91555,7 @@ case OP_DropTrigger: {
**
** The register P3 contains one less than the maximum number of allowed errors.
** At most reg(P3) errors will be reported.
-** In other words, the analysis stops as soon as reg(P1) errors are
+** In other words, the analysis stops as soon as reg(P1) errors are
** seen. Reg(P1) is updated with the number of errors remaining.
**
** The root page numbers of all tables in the database are integers
@@ -95443,7 +91568,7 @@ case OP_DropTrigger: {
*/
case OP_IntegrityCk: {
int nRoot; /* Number of tables to check. (Number of root pages.) */
- int *aRoot; /* Array of rootpage numbers for tables to be checked */
+ Pgno *aRoot; /* Array of rootpage numbers for tables to be checked */
int nErr; /* Number of errors reported */
char *z; /* Text of the error report */
Mem *pnErr; /* Register keeping track of errors remaining */
@@ -95452,7 +91577,7 @@ case OP_IntegrityCk: {
nRoot = pOp->p2;
aRoot = pOp->p4.ai;
assert( nRoot>0 );
- assert( aRoot[0]==nRoot );
+ assert( aRoot[0]==(Pgno)nRoot );
assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) );
pnErr = &aMem[pOp->p3];
assert( (pnErr->flags & MEM_Int)!=0 );
@@ -95510,7 +91635,7 @@ case OP_RowSetRead: { /* jump, in1, out3 */
pIn1 = &aMem[pOp->p1];
assert( (pIn1->flags & MEM_Blob)==0 || sqlite3VdbeMemIsRowSet(pIn1) );
- if( (pIn1->flags & MEM_Blob)==0
+ if( (pIn1->flags & MEM_Blob)==0
|| sqlite3RowSetNext((RowSet*)pIn1->z, &val)==0
){
/* The boolean index is empty */
@@ -95582,13 +91707,13 @@ case OP_RowSetTest: { /* jump, in1, in3 */
/* Opcode: Program P1 P2 P3 P4 P5
**
-** Execute the trigger program passed as P4 (type P4_SUBPROGRAM).
+** Execute the trigger program passed as P4 (type P4_SUBPROGRAM).
**
-** P1 contains the address of the memory cell that contains the first memory
-** cell in an array of values used as arguments to the sub-program. P2
-** contains the address to jump to if the sub-program throws an IGNORE
-** exception using the RAISE() function. Register P3 contains the address
-** of a memory cell in this (the parent) VM that is used to allocate the
+** P1 contains the address of the memory cell that contains the first memory
+** cell in an array of values used as arguments to the sub-program. P2
+** contains the address to jump to if the sub-program throws an IGNORE
+** exception using the RAISE() function. Register P3 contains the address
+** of a memory cell in this (the parent) VM that is used to allocate the
** memory required by the sub-vdbe at runtime.
**
** P4 is a pointer to the VM containing the trigger program.
@@ -95608,17 +91733,17 @@ case OP_Program: { /* jump */
pProgram = pOp->p4.pProgram;
pRt = &aMem[pOp->p3];
assert( pProgram->nOp>0 );
-
- /* If the p5 flag is clear, then recursive invocation of triggers is
+
+ /* If the p5 flag is clear, then recursive invocation of triggers is
** disabled for backwards compatibility (p5 is set if this sub-program
** is really a trigger, not a foreign key action, and the flag set
** and cleared by the "PRAGMA recursive_triggers" command is clear).
- **
- ** It is recursive invocation of triggers, at the SQL level, that is
- ** disabled. In some cases a single trigger may generate more than one
- ** SubProgram (if the trigger may be executed with more than one different
+ **
+ ** It is recursive invocation of triggers, at the SQL level, that is
+ ** disabled. In some cases a single trigger may generate more than one
+ ** SubProgram (if the trigger may be executed with more than one different
** ON CONFLICT algorithm). SubProgram structures associated with a
- ** single trigger all have the same value for the SubProgram.token
+ ** single trigger all have the same value for the SubProgram.token
** variable. */
if( pOp->p5 ){
t = pProgram->token;
@@ -95634,10 +91759,10 @@ case OP_Program: { /* jump */
/* Register pRt is used to store the memory required to save the state
** of the current program, and the memory required at runtime to execute
- ** the trigger program. If this trigger has been fired before, then pRt
+ ** the trigger program. If this trigger has been fired before, then pRt
** is already allocated. Otherwise, it must be initialized. */
if( (pRt->flags&MEM_Blob)==0 ){
- /* SubProgram.nMem is set to the number of memory cells used by the
+ /* SubProgram.nMem is set to the number of memory cells used by the
** program stored in SubProgram.aOp. As well as these, one memory
** cell is required for each cursor used by the program. Set local
** variable nMem (and later, VdbeFrame.nChildMem) to this value.
@@ -95685,7 +91810,7 @@ case OP_Program: { /* jump */
}else{
pFrame = (VdbeFrame*)pRt->z;
assert( pRt->xDel==sqlite3VdbeFrameMemDel );
- assert( pProgram->nMem+pProgram->nCsr==pFrame->nChildMem
+ assert( pProgram->nMem+pProgram->nCsr==pFrame->nChildMem
|| (pProgram->nCsr==0 && pProgram->nMem+1==pFrame->nChildMem) );
assert( pProgram->nCsr==pFrame->nChildCsr );
assert( (int)(pOp - aOp)==pFrame->pc );
@@ -95719,7 +91844,7 @@ case OP_Program: { /* jump */
int i;
for(i=0; inMem; i++){
aMem[i].pScopyFrom = 0; /* Prevent false-positive AboutToChange() errs */
- aMem[i].flags |= MEM_Undefined; /* Cause a fault if this reg is reused */
+ MemSetTypeFlag(&aMem[i], MEM_Undefined); /* Fault if this reg is reused */
}
}
#endif
@@ -95729,10 +91854,10 @@ case OP_Program: { /* jump */
/* Opcode: Param P1 P2 * * *
**
-** This opcode is only ever present in sub-programs called via the
-** OP_Program instruction. Copy a value currently stored in a memory
-** cell of the calling (parent) frame to cell P2 in the current frames
-** address space. This is used by trigger programs to access the new.*
+** This opcode is only ever present in sub-programs called via the
+** OP_Program instruction. Copy a value currently stored in a memory
+** cell of the calling (parent) frame to cell P2 in the current frames
+** address space. This is used by trigger programs to access the new.*
** and old.* values.
**
** The address of the cell in the parent frame is determined by adding
@@ -95744,7 +91869,7 @@ case OP_Param: { /* out2 */
Mem *pIn;
pOut = out2Prerelease(p, pOp);
pFrame = p->pFrame;
- pIn = &pFrame->aMem[pOp->p1 + pFrame->aOp[pFrame->pc].p1];
+ pIn = &pFrame->aMem[pOp->p1 + pFrame->aOp[pFrame->pc].p1];
sqlite3VdbeMemShallowCopy(pOut, pIn, MEM_Ephem);
break;
}
@@ -95756,8 +91881,8 @@ case OP_Param: { /* out2 */
** Synopsis: fkctr[P1]+=P2
**
** Increment a "constraint counter" by P2 (P2 may be negative or positive).
-** If P1 is non-zero, the database constraint counter is incremented
-** (deferred foreign key constraints). Otherwise, if P1 is zero, the
+** If P1 is non-zero, the database constraint counter is incremented
+** (deferred foreign key constraints). Otherwise, if P1 is zero, the
** statement counter is incremented (immediate foreign key constraints).
*/
case OP_FkCounter: {
@@ -95775,7 +91900,7 @@ case OP_FkCounter: {
** Synopsis: if fkctr[P1]==0 goto P2
**
** This opcode tests if a foreign key constraint-counter is currently zero.
-** If so, jump to instruction P2. Otherwise, fall through to the next
+** If so, jump to instruction P2. Otherwise, fall through to the next
** instruction.
**
** If P1 is non-zero, then the jump is taken if the database constraint-counter
@@ -95801,7 +91926,7 @@ case OP_FkIfZero: { /* jump */
**
** P1 is a register in the root frame of this VM (the root frame is
** different from the current frame if this instruction is being executed
-** within a sub-program). Set the value of register P1 to the maximum of
+** within a sub-program). Set the value of register P1 to the maximum of
** its current value and the value in register P2.
**
** This instruction throws an error if the memory cell is not initially
@@ -95861,7 +91986,7 @@ case OP_IfPos: { /* jump, in1 */
** and r[P2] is set to be the value of the LIMIT, r[P1].
**
** if r[P1] is zero or negative, that means there is no LIMIT
-** and r[P2] is set to -1.
+** and r[P2] is set to -1.
**
** Otherwise, r[P2] is set to the sum of r[P1] and r[P3].
*/
@@ -95893,7 +92018,7 @@ case OP_OffsetLimit: { /* in1, out2, in3 */
**
** Register P1 must contain an integer. If the content of register P1 is
** initially greater than zero, then decrement the value in register P1.
-** If it is non-zero (negative or positive) and then also jump to P2.
+** If it is non-zero (negative or positive) and then also jump to P2.
** If register P1 is initially zero, leave it unchanged and fall through.
*/
case OP_IfNotZero: { /* jump, in1 */
@@ -95927,7 +92052,7 @@ case OP_DecrJumpZero: { /* jump, in1 */
** Synopsis: accum=r[P3] step(r[P2@P5])
**
** Execute the xStep function for an aggregate.
-** The function has P5 arguments. P4 is a pointer to the
+** The function has P5 arguments. P4 is a pointer to the
** FuncDef structure that specifies the function. Register P3 is the
** accumulator.
**
@@ -95938,7 +92063,7 @@ case OP_DecrJumpZero: { /* jump, in1 */
** Synopsis: accum=r[P3] inverse(r[P2@P5])
**
** Execute the xInverse function for an aggregate.
-** The function has P5 arguments. P4 is a pointer to the
+** The function has P5 arguments. P4 is a pointer to the
** FuncDef structure that specifies the function. Register P3 is the
** accumulator.
**
@@ -95949,7 +92074,7 @@ case OP_DecrJumpZero: { /* jump, in1 */
** Synopsis: accum=r[P3] step(r[P2@P5])
**
** Execute the xStep (if P1==0) or xInverse (if P1!=0) function for an
-** aggregate. The function has P5 arguments. P4 is a pointer to the
+** aggregate. The function has P5 arguments. P4 is a pointer to the
** FuncDef structure that specifies the function. Register P3 is the
** accumulator.
**
@@ -95992,6 +92117,7 @@ case OP_AggStep: {
pOp->opcode = OP_AggStep1;
/* Fall through into OP_AggStep */
+ /* no break */ deliberate_fall_through
}
case OP_AggStep1: {
int i;
@@ -96065,7 +92191,7 @@ case OP_AggStep1: {
** Synopsis: accum=r[P1] N=P2
**
** P1 is the memory location that is the accumulator for an aggregate
-** or window function. Execute the finalizer function
+** or window function. Execute the finalizer function
** for an aggregate and store the result in P1.
**
** P2 is the number of arguments that the step function takes and
@@ -96104,7 +92230,7 @@ case OP_AggFinal: {
{
rc = sqlite3VdbeMemFinalize(pMem, pOp->p4.pFunc);
}
-
+
if( rc ){
sqlite3VdbeError(p, "%s", sqlite3_value_text(pMem));
goto abort_due_to_error;
@@ -96150,9 +92276,9 @@ case OP_Checkpoint: {
}
for(i=0, pMem = &aMem[pOp->p3]; i<3; i++, pMem++){
sqlite3VdbeMemSetInt64(pMem, (i64)aRes[i]);
- }
+ }
break;
-};
+};
#endif
#ifndef SQLITE_OMIT_PRAGMA
@@ -96178,9 +92304,9 @@ case OP_JournalMode: { /* out2 */
pOut = out2Prerelease(p, pOp);
eNew = pOp->p3;
- assert( eNew==PAGER_JOURNALMODE_DELETE
- || eNew==PAGER_JOURNALMODE_TRUNCATE
- || eNew==PAGER_JOURNALMODE_PERSIST
+ assert( eNew==PAGER_JOURNALMODE_DELETE
+ || eNew==PAGER_JOURNALMODE_TRUNCATE
+ || eNew==PAGER_JOURNALMODE_PERSIST
|| eNew==PAGER_JOURNALMODE_OFF
|| eNew==PAGER_JOURNALMODE_MEMORY
|| eNew==PAGER_JOURNALMODE_WAL
@@ -96199,7 +92325,7 @@ case OP_JournalMode: { /* out2 */
zFilename = sqlite3PagerFilename(pPager, 1);
/* Do not allow a transition to journal_mode=WAL for a database
- ** in temporary storage or if the VFS does not support shared memory
+ ** in temporary storage or if the VFS does not support shared memory
*/
if( eNew==PAGER_JOURNALMODE_WAL
&& (sqlite3Strlen30(zFilename)==0 /* Temp file */
@@ -96219,12 +92345,12 @@ case OP_JournalMode: { /* out2 */
);
goto abort_due_to_error;
}else{
-
+
if( eOld==PAGER_JOURNALMODE_WAL ){
/* If leaving WAL mode, close the log file. If successful, the call
- ** to PagerCloseWal() checkpoints and deletes the write-ahead-log
- ** file. An EXCLUSIVE lock may still be held on the database file
- ** after a successful return.
+ ** to PagerCloseWal() checkpoints and deletes the write-ahead-log
+ ** file. An EXCLUSIVE lock may still be held on the database file
+ ** after a successful return.
*/
rc = sqlite3PagerCloseWal(pPager, db);
if( rc==SQLITE_OK ){
@@ -96235,7 +92361,7 @@ case OP_JournalMode: { /* out2 */
** as an intermediate */
sqlite3PagerSetJournalMode(pPager, PAGER_JOURNALMODE_OFF);
}
-
+
/* Open a transaction on the database file. Regardless of the journal
** mode, this transaction always uses a rollback journal.
*/
@@ -96310,7 +92436,7 @@ case OP_IncrVacuum: { /* jump */
** is executed using sqlite3_step() it will either automatically
** reprepare itself (if it was originally created using sqlite3_prepare_v2())
** or it will fail with SQLITE_SCHEMA.
-**
+**
** If P1 is 0, then all SQL statements become expired. If P1 is non-zero,
** then only the currently executing statement is expired.
**
@@ -96330,12 +92456,42 @@ case OP_Expire: {
break;
}
+/* Opcode: CursorLock P1 * * * *
+**
+** Lock the btree to which cursor P1 is pointing so that the btree cannot be
+** written by an other cursor.
+*/
+case OP_CursorLock: {
+ VdbeCursor *pC;
+ assert( pOp->p1>=0 && pOp->p1nCursor );
+ pC = p->apCsr[pOp->p1];
+ assert( pC!=0 );
+ assert( pC->eCurType==CURTYPE_BTREE );
+ sqlite3BtreeCursorPin(pC->uc.pCursor);
+ break;
+}
+
+/* Opcode: CursorUnlock P1 * * * *
+**
+** Unlock the btree to which cursor P1 is pointing so that it can be
+** written by other cursors.
+*/
+case OP_CursorUnlock: {
+ VdbeCursor *pC;
+ assert( pOp->p1>=0 && pOp->p1nCursor );
+ pC = p->apCsr[pOp->p1];
+ assert( pC!=0 );
+ assert( pC->eCurType==CURTYPE_BTREE );
+ sqlite3BtreeCursorUnpin(pC->uc.pCursor);
+ break;
+}
+
#ifndef SQLITE_OMIT_SHARED_CACHE
/* Opcode: TableLock P1 P2 P3 P4 *
** Synopsis: iDb=P1 root=P2 write=P3
**
** Obtain a lock on a particular table. This instruction is only used when
-** the shared-cache feature is enabled.
+** the shared-cache feature is enabled.
**
** P1 is the index of the database in sqlite3.aDb[] of the database
** on which the lock is acquired. A readlock is obtained if P3==0 or
@@ -96349,7 +92505,7 @@ case OP_Expire: {
case OP_TableLock: {
u8 isWriteLock = (u8)pOp->p3;
if( isWriteLock || 0==(db->flags&SQLITE_ReadUncommit) ){
- int p1 = pOp->p1;
+ int p1 = pOp->p1;
assert( p1>=0 && p1nDb );
assert( DbMaskTest(p->btreeMask, p1) );
assert( isWriteLock==0 || isWriteLock==1 );
@@ -96369,7 +92525,7 @@ case OP_TableLock: {
#ifndef SQLITE_OMIT_VIRTUALTABLE
/* Opcode: VBegin * * * P4 *
**
-** P4 may be a pointer to an sqlite3_vtab structure. If so, call the
+** P4 may be a pointer to an sqlite3_vtab structure. If so, call the
** xBegin method for that table.
**
** Also, whether or not P4 is set, check that this is not being called from
@@ -96389,7 +92545,7 @@ case OP_VBegin: {
#ifndef SQLITE_OMIT_VIRTUALTABLE
/* Opcode: VCreate P1 P2 * * *
**
-** P2 is a register that holds the name of a virtual table in database
+** P2 is a register that holds the name of a virtual table in database
** P1. Call the xCreate method for that table.
*/
case OP_VCreate: {
@@ -96574,7 +92730,7 @@ case OP_VColumn: {
assert( pModule->xColumn );
memset(&sContext, 0, sizeof(sContext));
sContext.pOut = pDest;
- testcase( (pOp->p5 & OPFLAG_NOCHNG)==0 && pOp->p5!=0 );
+ assert( pOp->p5==OPFLAG_NOCHNG || pOp->p5==0 );
if( pOp->p5 & OPFLAG_NOCHNG ){
sqlite3VdbeMemSetNull(pDest);
pDest->flags = MEM_Null|MEM_Zero;
@@ -96625,7 +92781,7 @@ case OP_VNext: { /* jump */
/* Invoke the xNext() method of the module. There is no way for the
** underlying implementation to return an error if one occurs during
- ** xNext(). Instead, if an error occurs, true is returned (indicating that
+ ** xNext(). Instead, if an error occurs, true is returned (indicating that
** data is available) and the error code returned when xColumn or
** some other method is next invoked on the save virtual table cursor.
*/
@@ -96653,7 +92809,7 @@ case OP_VRename: {
sqlite3_vtab *pVtab;
Mem *pName;
int isLegacy;
-
+
isLegacy = (db->flags & SQLITE_LegacyAlter);
db->flags |= SQLITE_LegacyAlter;
pVtab = pOp->p4.pVtab->pVtab;
@@ -96683,23 +92839,23 @@ case OP_VRename: {
**
** P4 is a pointer to a virtual table object, an sqlite3_vtab structure.
** This opcode invokes the corresponding xUpdate method. P2 values
-** are contiguous memory cells starting at P3 to pass to the xUpdate
-** invocation. The value in register (P3+P2-1) corresponds to the
+** are contiguous memory cells starting at P3 to pass to the xUpdate
+** invocation. The value in register (P3+P2-1) corresponds to the
** p2th element of the argv array passed to xUpdate.
**
** The xUpdate method will do a DELETE or an INSERT or both.
** The argv[0] element (which corresponds to memory cell P3)
-** is the rowid of a row to delete. If argv[0] is NULL then no
-** deletion occurs. The argv[1] element is the rowid of the new
-** row. This can be NULL to have the virtual table select the new
-** rowid for itself. The subsequent elements in the array are
+** is the rowid of a row to delete. If argv[0] is NULL then no
+** deletion occurs. The argv[1] element is the rowid of the new
+** row. This can be NULL to have the virtual table select the new
+** rowid for itself. The subsequent elements in the array are
** the values of columns in the new row.
**
** If P2==1 then no insert is performed. argv[0] is the rowid of
** a row to delete.
**
** P1 is a boolean flag. If it is set to true and the xUpdate call
-** is successful, then the value returned by sqlite3_last_insert_rowid()
+** is successful, then the value returned by sqlite3_last_insert_rowid()
** is set to the value of the rowid for the row just inserted.
**
** P5 is the error actions (OE_Replace, OE_Fail, OE_Ignore, etc) to
@@ -96714,7 +92870,7 @@ case OP_VUpdate: {
Mem **apArg;
Mem *pX;
- assert( pOp->p2==1 || pOp->p5==OE_Fail || pOp->p5==OE_Rollback
+ assert( pOp->p2==1 || pOp->p5==OE_Fail || pOp->p5==OE_Rollback
|| pOp->p5==OE_Abort || pOp->p5==OE_Ignore || pOp->p5==OE_Replace
);
assert( p->readOnly==0 );
@@ -96800,7 +92956,7 @@ case OP_MaxPgcnt: { /* out2 */
#endif
/* Opcode: Function P1 P2 P3 P4 *
-** Synopsis: r[P3]=func(r[P2@P5])
+** Synopsis: r[P3]=func(r[P2@NP])
**
** Invoke a user function (P4 is a pointer to an sqlite3_context object that
** contains a pointer to the function to be run) with arguments taken
@@ -96809,7 +92965,7 @@ case OP_MaxPgcnt: { /* out2 */
** The result of the function is stored
** in register P3. Register P3 must not be one of the function inputs.
**
-** P1 is a 32-bit bitmask indicating whether or not each argument to the
+** P1 is a 32-bit bitmask indicating whether or not each argument to the
** function was determined to be constant at compile time. If the first
** argument was constant then bit 0 of P1 is set. This is used to determine
** whether meta data associated with a user function argument using the
@@ -96819,7 +92975,7 @@ case OP_MaxPgcnt: { /* out2 */
** See also: AggStep, AggFinal, PureFunc
*/
/* Opcode: PureFunc P1 P2 P3 P4 *
-** Synopsis: r[P3]=func(r[P2@P5])
+** Synopsis: r[P3]=func(r[P2@NP])
**
** Invoke a user function (P4 is a pointer to an sqlite3_context object that
** contains a pointer to the function to be run) with arguments taken
@@ -96828,7 +92984,7 @@ case OP_MaxPgcnt: { /* out2 */
** The result of the function is stored
** in register P3. Register P3 must not be one of the function inputs.
**
-** P1 is a 32-bit bitmask indicating whether or not each argument to the
+** P1 is a 32-bit bitmask indicating whether or not each argument to the
** function was determined to be constant at compile time. If the first
** argument was constant then bit 0 of P1 is set. This is used to determine
** whether meta data associated with a user function argument using the
@@ -96951,18 +93107,17 @@ case OP_Init: { /* jump */
){
#ifndef SQLITE_OMIT_DEPRECATED
if( db->mTrace & SQLITE_TRACE_LEGACY ){
- void (*x)(void*,const char*) = (void(*)(void*,const char*))db->xTrace;
char *z = sqlite3VdbeExpandSql(p, zTrace);
- x(db->pTraceArg, z);
+ db->trace.xLegacy(db->pTraceArg, z);
sqlite3_free(z);
}else
#endif
if( db->nVdbeExec>1 ){
char *z = sqlite3MPrintf(db, "-- %s", zTrace);
- (void)db->xTrace(SQLITE_TRACE_STMT, db->pTraceArg, p, z);
+ (void)db->trace.xV2(SQLITE_TRACE_STMT, db->pTraceArg, p, z);
sqlite3DbFree(db, z);
}else{
- (void)db->xTrace(SQLITE_TRACE_STMT, db->pTraceArg, p, zTrace);
+ (void)db->trace.xV2(SQLITE_TRACE_STMT, db->pTraceArg, p, zTrace);
}
}
#ifdef SQLITE_USE_FCNTL_TRACE
@@ -97035,6 +93190,55 @@ case OP_Abortable: {
}
#endif
+#ifdef SQLITE_DEBUG
+/* Opcode: ReleaseReg P1 P2 P3 * P5
+** Synopsis: release r[P1@P2] mask P3
+**
+** Release registers from service. Any content that was in the
+** the registers is unreliable after this opcode completes.
+**
+** The registers released will be the P2 registers starting at P1,
+** except if bit ii of P3 set, then do not release register P1+ii.
+** In other words, P3 is a mask of registers to preserve.
+**
+** Releasing a register clears the Mem.pScopyFrom pointer. That means
+** that if the content of the released register was set using OP_SCopy,
+** a change to the value of the source register for the OP_SCopy will no longer
+** generate an assertion fault in sqlite3VdbeMemAboutToChange().
+**
+** If P5 is set, then all released registers have their type set
+** to MEM_Undefined so that any subsequent attempt to read the released
+** register (before it is reinitialized) will generate an assertion fault.
+**
+** P5 ought to be set on every call to this opcode.
+** However, there are places in the code generator will release registers
+** before their are used, under the (valid) assumption that the registers
+** will not be reallocated for some other purpose before they are used and
+** hence are safe to release.
+**
+** This opcode is only available in testing and debugging builds. It is
+** not generated for release builds. The purpose of this opcode is to help
+** validate the generated bytecode. This opcode does not actually contribute
+** to computing an answer.
+*/
+case OP_ReleaseReg: {
+ Mem *pMem;
+ int i;
+ u32 constMask;
+ assert( pOp->p1>0 );
+ assert( pOp->p1+pOp->p2<=(p->nMem+1 - p->nCursor)+1 );
+ pMem = &aMem[pOp->p1];
+ constMask = pOp->p3;
+ for(i=0; ip2; i++, pMem++){
+ if( i>=32 || (constMask & MASKBIT32(i))==0 ){
+ pMem->pScopyFrom = 0;
+ if( i<32 && pOp->p5 ) MemSetTypeFlag(pMem, MEM_Undefined);
+ }
+ }
+ break;
+}
+#endif
+
/* Opcode: Noop * * * * *
**
** Do nothing. This instruction is often useful as a jump
@@ -97086,6 +93290,12 @@ default: { /* This is really OP_Noop, OP_Explain */
if( opProperty & OPFLG_OUT3 ){
registerTrace(pOrigOp->p3, &aMem[pOrigOp->p3]);
}
+ if( opProperty==0xff ){
+ /* Never happens. This code exists to avoid a harmless linkage
+ ** warning aboud sqlite3VdbeRegisterDump() being defined but not
+ ** used. */
+ sqlite3VdbeRegisterDump(p);
+ }
}
#endif /* SQLITE_DEBUG */
#endif /* NDEBUG */
@@ -97103,7 +93313,7 @@ abort_due_to_error:
p->rc = rc;
sqlite3SystemError(db, rc);
testcase( sqlite3GlobalConfig.xLog!=0 );
- sqlite3_log(rc, "statement aborts at %d: [%s] %s",
+ sqlite3_log(rc, "statement aborts at %d: [%s] %s",
(int)(pOp - aOp), p->zSql, p->zErrMsg);
sqlite3VdbeHalt(p);
if( rc==SQLITE_IOERR_NOMEM ) sqlite3OomFault(db);
@@ -97120,7 +93330,7 @@ vdbe_return:
while( nVmStep>=nProgressLimit && db->xProgress!=0 ){
nProgressLimit += db->nProgressOps;
if( db->xProgress(db->pProgressArg) ){
- nProgressLimit = 0xffffffff;
+ nProgressLimit = LARGEST_UINT64;
rc = SQLITE_INTERRUPT;
goto abort_due_to_error;
}
@@ -97128,8 +93338,8 @@ vdbe_return:
#endif
p->aCounter[SQLITE_STMTSTATUS_VM_STEP] += (int)nVmStep;
sqlite3VdbeLeave(p);
- assert( rc!=SQLITE_OK || nExtraDelete==0
- || sqlite3_strlike("DELETE%",p->zSql,0)!=0
+ assert( rc!=SQLITE_OK || nExtraDelete==0
+ || sqlite3_strlike("DELETE%",p->zSql,0)!=0
);
return rc;
@@ -97153,10 +93363,8 @@ no_mem:
** flag.
*/
abort_due_to_interrupt:
- assert( db->u1.isInterrupted );
- rc = db->mallocFailed ? SQLITE_NOMEM_BKPT : SQLITE_INTERRUPT;
- p->rc = rc;
- sqlite3VdbeError(p, "%s", sqlite3ErrStr(rc));
+ assert( AtomicLoad(&db->u1.isInterrupted) );
+ rc = SQLITE_INTERRUPT;
goto abort_due_to_error;
}
@@ -97213,7 +93421,7 @@ struct Incrblob {
** sqlite3DbFree().
**
** If an error does occur, then the b-tree cursor is closed. All subsequent
-** calls to sqlite3_blob_read(), blob_write() or blob_reopen() will
+** calls to sqlite3_blob_read(), blob_write() or blob_reopen() will
** immediately return SQLITE_ABORT.
*/
static int blobSeekToRow(Incrblob *p, sqlite3_int64 iRow, char **pzErr){
@@ -97221,7 +93429,7 @@ static int blobSeekToRow(Incrblob *p, sqlite3_int64 iRow, char **pzErr){
char *zErr = 0; /* Error message */
Vdbe *v = (Vdbe *)p->pStmt;
- /* Set the value of register r[1] in the SQL statement to integer iRow.
+ /* Set the value of register r[1] in the SQL statement to integer iRow.
** This is done directly as a performance optimization
*/
v->aMem[1].flags = MEM_Int;
@@ -97365,7 +93573,7 @@ SQLITE_API int sqlite3_blob_open(
}
/* If the value is being opened for writing, check that the
- ** column is not indexed, and that it is not part of a foreign key.
+ ** column is not indexed, and that it is not part of a foreign key.
*/
if( wrFlag ){
const char *zFault = 0;
@@ -97374,7 +93582,7 @@ SQLITE_API int sqlite3_blob_open(
if( db->flags&SQLITE_ForeignKeys ){
/* Check that the column is not part of an FK child key definition. It
** is not necessary to check if it is part of a parent key, as parent
- ** key columns must be indexed. The check below will pick up this
+ ** key columns must be indexed. The check below will pick up this
** case. */
FKey *pFKey;
for(pFKey=pTab->pFKey; pFKey; pFKey=pFKey->pNextFrom){
@@ -97408,8 +93616,8 @@ SQLITE_API int sqlite3_blob_open(
pBlob->pStmt = (sqlite3_stmt *)sqlite3VdbeCreate(&sParse);
assert( pBlob->pStmt || db->mallocFailed );
if( pBlob->pStmt ){
-
- /* This VDBE program seeks a btree cursor to the identified
+
+ /* This VDBE program seeks a btree cursor to the identified
** db/table/row entry. The reason for using a vdbe program instead
** of writing code to use the b-tree layer directly is that the
** vdbe program will take advantage of the various transaction,
@@ -97417,11 +93625,11 @@ SQLITE_API int sqlite3_blob_open(
**
** After seeking the cursor, the vdbe executes an OP_ResultRow.
** Code external to the Vdbe then "borrows" the b-tree cursor and
- ** uses it to implement the blob_read(), blob_write() and
+ ** uses it to implement the blob_read(), blob_write() and
** blob_bytes() functions.
**
** The sqlite3_blob_close() function finalizes the vdbe program,
- ** which closes the b-tree cursor and (possibly) commits the
+ ** which closes the b-tree cursor and (possibly) commits the
** transaction.
*/
static const int iLn = VDBE_OFFSET_LINENO(2);
@@ -97438,7 +93646,7 @@ SQLITE_API int sqlite3_blob_open(
int iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
VdbeOp *aOp;
- sqlite3VdbeAddOp4Int(v, OP_Transaction, iDb, wrFlag,
+ sqlite3VdbeAddOp4Int(v, OP_Transaction, iDb, wrFlag,
pTab->pSchema->schema_cookie,
pTab->pSchema->iGeneration);
sqlite3VdbeChangeP5(v, 1);
@@ -97446,7 +93654,7 @@ SQLITE_API int sqlite3_blob_open(
aOp = sqlite3VdbeAddOpList(v, ArraySize(openBlob), openBlob, iLn);
/* Make sure a mutex is held on the table to be accessed */
- sqlite3VdbeUsesBtree(v, iDb);
+ sqlite3VdbeUsesBtree(v, iDb);
if( db->mallocFailed==0 ){
assert( aOp!=0 );
@@ -97462,17 +93670,17 @@ SQLITE_API int sqlite3_blob_open(
if( db->mallocFailed==0 ){
#endif
- /* Remove either the OP_OpenWrite or OpenRead. Set the P2
+ /* Remove either the OP_OpenWrite or OpenRead. Set the P2
** parameter of the other to pTab->tnum. */
if( wrFlag ) aOp[1].opcode = OP_OpenWrite;
aOp[1].p2 = pTab->tnum;
- aOp[1].p3 = iDb;
+ aOp[1].p3 = iDb;
/* Configure the number of columns. Configure the cursor to
** think that the table has one more column than it really
** does. An OP_Column to retrieve this imaginary column will
** always return an SQL NULL. This is useful because it means
- ** we can invoke OP_Column to fill in the vdbe cursors type
+ ** we can invoke OP_Column to fill in the vdbe cursors type
** and offset cache without causing any IO.
*/
aOp[1].p4type = P4_INT32;
@@ -97485,7 +93693,7 @@ SQLITE_API int sqlite3_blob_open(
sqlite3VdbeMakeReady(v, &sParse);
}
}
-
+
pBlob->iCol = iCol;
pBlob->db = db;
sqlite3BtreeLeaveAll(db);
@@ -97536,10 +93744,10 @@ SQLITE_API int sqlite3_blob_close(sqlite3_blob *pBlob){
** Perform a read or write operation on a blob
*/
static int blobReadWrite(
- sqlite3_blob *pBlob,
- void *z,
- int n,
- int iOffset,
+ sqlite3_blob *pBlob,
+ void *z,
+ int n,
+ int iOffset,
int (*xCall)(BtCursor*, u32, u32, void*)
){
int rc;
@@ -97569,14 +93777,14 @@ static int blobReadWrite(
#ifdef SQLITE_ENABLE_PREUPDATE_HOOK
if( xCall==sqlite3BtreePutData && db->xPreUpdateCallback ){
- /* If a pre-update hook is registered and this is a write cursor,
- ** invoke it here.
- **
+ /* If a pre-update hook is registered and this is a write cursor,
+ ** invoke it here.
+ **
** TODO: The preupdate-hook is passed SQLITE_DELETE, even though this
** operation should really be an SQLITE_UPDATE. This is probably
- ** incorrect, but is convenient because at this point the new.* values
- ** are not easily obtainable. And for the sessions module, an
- ** SQLITE_UPDATE where the PK columns do not change is handled in the
+ ** incorrect, but is convenient because at this point the new.* values
+ ** are not easily obtainable. And for the sessions module, an
+ ** SQLITE_UPDATE where the PK columns do not change is handled in the
** same way as an SQLITE_DELETE (the SQLITE_DELETE code is actually
** slightly more efficient). Since you cannot write to a PK column
** using the incremental-blob API, this works. For the sessions module
@@ -97636,8 +93844,8 @@ SQLITE_API int sqlite3_blob_bytes(sqlite3_blob *pBlob){
**
** If an error occurs, or if the specified row does not exist or does not
** contain a blob or text value, then an error code is returned and the
-** database handle error code and message set. If this happens, then all
-** subsequent calls to sqlite3_blob_xxx() functions (except blob_close())
+** database handle error code and message set. If this happens, then all
+** subsequent calls to sqlite3_blob_xxx() functions (except blob_close())
** immediately return SQLITE_ABORT.
*/
SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){
@@ -97731,7 +93939,7 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){
** is like Close() followed by Init() only
** much faster.
**
-** The interfaces above must be called in a particular order. Write() can
+** The interfaces above must be called in a particular order. Write() can
** only occur in between Init()/Reset() and Rewind(). Next(), Rowkey(), and
** Compare() can only occur in between Rewind() and Close()/Reset(). i.e.
**
@@ -97739,16 +93947,16 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){
** for each record: Write()
** Rewind()
** Rowkey()/Compare()
-** Next()
+** Next()
** Close()
**
** Algorithm:
**
-** Records passed to the sorter via calls to Write() are initially held
+** Records passed to the sorter via calls to Write() are initially held
** unsorted in main memory. Assuming the amount of memory used never exceeds
** a threshold, when Rewind() is called the set of records is sorted using
** an in-memory merge sort. In this case, no temporary files are required
-** and subsequent calls to Rowkey(), Next() and Compare() read records
+** and subsequent calls to Rowkey(), Next() and Compare() read records
** directly from main memory.
**
** If the amount of space used to store records in main memory exceeds the
@@ -97758,10 +93966,10 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){
** of PMAs may be created by merging existing PMAs together - for example
** merging two or more level-0 PMAs together creates a level-1 PMA.
**
-** The threshold for the amount of main memory to use before flushing
+** The threshold for the amount of main memory to use before flushing
** records to a PMA is roughly the same as the limit configured for the
-** page-cache of the main database. Specifically, the threshold is set to
-** the value returned by "PRAGMA main.page_size" multipled by
+** page-cache of the main database. Specifically, the threshold is set to
+** the value returned by "PRAGMA main.page_size" multipled by
** that returned by "PRAGMA main.cache_size", in bytes.
**
** If the sorter is running in single-threaded mode, then all PMAs generated
@@ -97778,7 +93986,7 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){
** than zero, and (b) worker threads have been enabled at runtime by calling
** "PRAGMA threads=N" with some value of N greater than 0.
**
-** When Rewind() is called, any data remaining in memory is flushed to a
+** When Rewind() is called, any data remaining in memory is flushed to a
** final PMA. So at this point the data is stored in some number of sorted
** PMAs within temporary files on disk.
**
@@ -97790,16 +93998,16 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){
**
** Or, if running in multi-threaded mode, then a background thread is
** launched to merge the existing PMAs. Once the background thread has
-** merged T bytes of data into a single sorted PMA, the main thread
+** merged T bytes of data into a single sorted PMA, the main thread
** begins reading keys from that PMA while the background thread proceeds
** with merging the next T bytes of data. And so on.
**
-** Parameter T is set to half the value of the memory threshold used
+** Parameter T is set to half the value of the memory threshold used
** by Write() above to determine when to create a new PMA.
**
-** If there are more than SORTER_MAX_MERGE_COUNT PMAs in total when
-** Rewind() is called, then a hierarchy of incremental-merges is used.
-** First, T bytes of data from the first SORTER_MAX_MERGE_COUNT PMAs on
+** If there are more than SORTER_MAX_MERGE_COUNT PMAs in total when
+** Rewind() is called, then a hierarchy of incremental-merges is used.
+** First, T bytes of data from the first SORTER_MAX_MERGE_COUNT PMAs on
** disk are merged together. Then T bytes of data from the second set, and
** so on, such that no operation ever merges more than SORTER_MAX_MERGE_COUNT
** PMAs at a time. This done is to improve locality.
@@ -97814,7 +94022,7 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){
/* #include "sqliteInt.h" */
/* #include "vdbeInt.h" */
-/*
+/*
** If SQLITE_DEBUG_SORTER_THREADS is defined, this module outputs various
** messages to stderr that may be helpful in understanding the performance
** characteristics of the sorter in multi-threaded mode.
@@ -97843,7 +94051,7 @@ typedef struct SorterList SorterList; /* In-memory list of records */
typedef struct IncrMerger IncrMerger; /* Read & merge multiple PMAs */
/*
-** A container for a temp file handle and the current amount of data
+** A container for a temp file handle and the current amount of data
** stored in the file.
*/
struct SorterFile {
@@ -97883,17 +94091,17 @@ struct SorterList {
** the MergeEngine.nTree variable.
**
** The final (N/2) elements of aTree[] contain the results of comparing
-** pairs of PMA keys together. Element i contains the result of
+** pairs of PMA keys together. Element i contains the result of
** comparing aReadr[2*i-N] and aReadr[2*i-N+1]. Whichever key is smaller, the
-** aTree element is set to the index of it.
+** aTree element is set to the index of it.
**
** For the purposes of this comparison, EOF is considered greater than any
** other key value. If the keys are equal (only possible with two EOF
** values), it doesn't matter which index is stored.
**
-** The (N/4) elements of aTree[] that precede the final (N/2) described
+** The (N/4) elements of aTree[] that precede the final (N/2) described
** above contains the index of the smallest of each block of 4 PmaReaders
-** And so on. So that aTree[1] contains the index of the PmaReader that
+** And so on. So that aTree[1] contains the index of the PmaReader that
** currently points to the smallest key value. aTree[0] is unused.
**
** Example:
@@ -97909,7 +94117,7 @@ struct SorterList {
**
** aTree[] = { X, 5 0, 5 0, 3, 5, 6 }
**
-** The current element is "Apple" (the value of the key indicated by
+** The current element is "Apple" (the value of the key indicated by
** PmaReader 5). When the Next() operation is invoked, PmaReader 5 will
** be advanced to the next key in its segment. Say the next key is
** "Eggplant":
@@ -97950,8 +94158,8 @@ struct MergeEngine {
** each thread requries its own UnpackedRecord object to unpack records in
** as part of comparison operations.
**
-** Before a background thread is launched, variable bDone is set to 0. Then,
-** right before it exits, the thread itself sets bDone to 1. This is used for
+** Before a background thread is launched, variable bDone is set to 0. Then,
+** right before it exits, the thread itself sets bDone to 1. This is used for
** two purposes:
**
** 1. When flushing the contents of memory to a level-0 PMA on disk, to
@@ -97982,7 +94190,7 @@ struct SortSubtask {
/*
-** Main sorter structure. A single instance of this is allocated for each
+** Main sorter structure. A single instance of this is allocated for each
** sorter cursor created by the VDBE.
**
** mxKeysize:
@@ -98038,21 +94246,21 @@ struct PmaReader {
};
/*
-** Normally, a PmaReader object iterates through an existing PMA stored
+** Normally, a PmaReader object iterates through an existing PMA stored
** within a temp file. However, if the PmaReader.pIncr variable points to
** an object of the following type, it may be used to iterate/merge through
** multiple PMAs simultaneously.
**
-** There are two types of IncrMerger object - single (bUseThread==0) and
-** multi-threaded (bUseThread==1).
+** There are two types of IncrMerger object - single (bUseThread==0) and
+** multi-threaded (bUseThread==1).
**
-** A multi-threaded IncrMerger object uses two temporary files - aFile[0]
-** and aFile[1]. Neither file is allowed to grow to more than mxSz bytes in
-** size. When the IncrMerger is initialized, it reads enough data from
-** pMerger to populate aFile[0]. It then sets variables within the
-** corresponding PmaReader object to read from that file and kicks off
-** a background thread to populate aFile[1] with the next mxSz bytes of
-** sorted record data from pMerger.
+** A multi-threaded IncrMerger object uses two temporary files - aFile[0]
+** and aFile[1]. Neither file is allowed to grow to more than mxSz bytes in
+** size. When the IncrMerger is initialized, it reads enough data from
+** pMerger to populate aFile[0]. It then sets variables within the
+** corresponding PmaReader object to read from that file and kicks off
+** a background thread to populate aFile[1] with the next mxSz bytes of
+** sorted record data from pMerger.
**
** When the PmaReader reaches the end of aFile[0], it blocks until the
** background thread has finished populating aFile[1]. It then exchanges
@@ -98063,7 +94271,7 @@ struct PmaReader {
**
** A single-threaded IncrMerger does not open any temporary files of its
** own. Instead, it has exclusive access to mxSz bytes of space beginning
-** at offset iStartOff of file pTask->file2. And instead of using a
+** at offset iStartOff of file pTask->file2. And instead of using a
** background thread to prepare data for the PmaReader, with a single
** threaded IncrMerger the allocate part of pTask->file2 is "refilled" with
** keys from pMerger by the calling thread whenever the PmaReader runs out
@@ -98175,7 +94383,7 @@ static int vdbePmaReadBlob(
assert( p->aBuffer );
- /* If there is no more data to be read from the buffer, read the next
+ /* If there is no more data to be read from the buffer, read the next
** p->nBuffer bytes of data from the file into it. Or, if there are less
** than p->nBuffer bytes remaining in the PMA, read all remaining data. */
iBuf = p->iReadOff % p->nBuffer;
@@ -98196,11 +94404,11 @@ static int vdbePmaReadBlob(
assert( rc!=SQLITE_IOERR_SHORT_READ );
if( rc!=SQLITE_OK ) return rc;
}
- nAvail = p->nBuffer - iBuf;
+ nAvail = p->nBuffer - iBuf;
if( nByte<=nAvail ){
/* The requested data is available in the in-memory buffer. In this
- ** case there is no need to make a copy of the data, just return a
+ ** case there is no need to make a copy of the data, just return a
** pointer into the buffer to the caller. */
*ppOut = &p->aBuffer[iBuf];
p->iReadOff += nByte;
@@ -98279,7 +94487,7 @@ static int vdbePmaReadVarint(PmaReader *p, u64 *pnOut){
/*
** Attempt to memory map file pFile. If successful, set *pp to point to the
-** new mapping and return SQLITE_OK. If the mapping is not attempted
+** new mapping and return SQLITE_OK. If the mapping is not attempted
** (because the file is too large or the VFS layer is configured not to use
** mmap), return SQLITE_OK and set *pp to NULL.
**
@@ -98300,7 +94508,7 @@ static int vdbeSorterMapFile(SortSubtask *pTask, SorterFile *pFile, u8 **pp){
/*
** Attach PmaReader pReadr to file pFile (if it is not already attached to
-** that file) and seek it to offset iOff within the file. Return SQLITE_OK
+** that file) and seek it to offset iOff within the file. Return SQLITE_OK
** if successful, or an SQLite error code if an error occurs.
*/
static int vdbePmaReaderSeek(
@@ -98390,11 +94598,11 @@ static int vdbePmaReaderNext(PmaReader *pReadr){
/*
** Initialize PmaReader pReadr to scan through the PMA stored in file pFile
-** starting at offset iStart and ending at offset iEof-1. This function
-** leaves the PmaReader pointing to the first key in the PMA (or EOF if the
+** starting at offset iStart and ending at offset iEof-1. This function
+** leaves the PmaReader pointing to the first key in the PMA (or EOF if the
** PMA is empty).
**
-** If the pnByte parameter is NULL, then it is assumed that the file
+** If the pnByte parameter is NULL, then it is assumed that the file
** contains a single PMA, and that that PMA omits the initial length varint.
*/
static int vdbePmaReaderInit(
@@ -98427,7 +94635,7 @@ static int vdbePmaReaderInit(
/*
** A version of vdbeSorterCompare() that assumes that it has already been
-** determined that the first field of key1 is equal to the first field of
+** determined that the first field of key1 is equal to the first field of
** key2.
*/
static int vdbeSorterCompareTail(
@@ -98445,7 +94653,7 @@ static int vdbeSorterCompareTail(
}
/*
-** Compare key1 (buffer pKey1, size nKey1 bytes) with key2 (buffer pKey2,
+** Compare key1 (buffer pKey1, size nKey1 bytes) with key2 (buffer pKey2,
** size nKey2 bytes). Use (pTask->pKeyInfo) for the collation sequences
** used by the comparison. Return the result of the comparison.
**
@@ -98491,8 +94699,8 @@ static int vdbeSorterCompareText(
int n2;
int res;
- getVarint32(&p1[1], n1);
- getVarint32(&p2[1], n2);
+ getVarint32NR(&p1[1], n1);
+ getVarint32NR(&p2[1], n2);
res = memcmp(v1, v2, (MIN(n1, n2) - 13)/2);
if( res==0 ){
res = n1 - n2;
@@ -98591,7 +94799,7 @@ static int vdbeSorterCompareInt(
** is non-zero and the sorter is able to guarantee a stable sort, nField
** is used instead. This is used when sorting records for a CREATE INDEX
** statement. In this case, keys are always delivered to the sorter in
-** order of the primary key, which happens to be make up the final part
+** order of the primary key, which happens to be make up the final part
** of the records being sorted. So if the sort is stable, there is never
** any reason to compare PK fields and they can be ignored for a small
** performance boost.
@@ -98688,7 +94896,7 @@ SQLITE_PRIVATE int sqlite3VdbeSorterInit(
}
}
- if( pKeyInfo->nAllField<13
+ if( pKeyInfo->nAllField<13
&& (pKeyInfo->aColl[0]==0 || pKeyInfo->aColl[0]==db->pDfltColl)
&& (pKeyInfo->aSortFlags[0] & KEYINFO_ORDER_BIGNULL)==0
){
@@ -98713,7 +94921,7 @@ static void vdbeSorterRecordFree(sqlite3 *db, SorterRecord *pRecord){
}
/*
-** Free all resources owned by the object indicated by argument pTask. All
+** Free all resources owned by the object indicated by argument pTask. All
** fields of *pTask are zeroed before returning.
*/
static void vdbeSortSubtaskCleanup(sqlite3 *db, SortSubtask *pTask){
@@ -98812,7 +95020,7 @@ static int vdbeSorterCreateThread(
}
/*
-** Join all outstanding threads launched by SorterWrite() to create
+** Join all outstanding threads launched by SorterWrite() to create
** level-0 PMAs.
*/
static int vdbeSorterJoinAll(VdbeSorter *pSorter, int rcin){
@@ -98821,10 +95029,10 @@ static int vdbeSorterJoinAll(VdbeSorter *pSorter, int rcin){
/* This function is always called by the main user thread.
**
- ** If this function is being called after SorterRewind() has been called,
+ ** If this function is being called after SorterRewind() has been called,
** it is possible that thread pSorter->aTask[pSorter->nTask-1].pThread
** is currently attempt to join one of the other threads. To avoid a race
- ** condition where this thread also attempts to join the same object, join
+ ** condition where this thread also attempts to join the same object, join
** thread pSorter->aTask[pSorter->nTask-1].pThread first. */
for(i=pSorter->nTask-1; i>=0; i--){
SortSubtask *pTask = &pSorter->aTask[i];
@@ -98996,8 +95204,8 @@ static int vdbeSorterOpenTempFile(
}
/*
-** If it has not already been allocated, allocate the UnpackedRecord
-** structure at pTask->pUnpacked. Return SQLITE_OK if successful (or
+** If it has not already been allocated, allocate the UnpackedRecord
+** structure at pTask->pUnpacked. Return SQLITE_OK if successful (or
** if no allocation was required), or SQLITE_NOMEM otherwise.
*/
static int vdbeSortAllocUnpacked(SortSubtask *pTask){
@@ -99060,14 +95268,14 @@ static SorterCompare vdbeSorterGetCompare(VdbeSorter *p){
if( p->typeMask==SORTER_TYPE_INTEGER ){
return vdbeSorterCompareInt;
}else if( p->typeMask==SORTER_TYPE_TEXT ){
- return vdbeSorterCompareText;
+ return vdbeSorterCompareText;
}
return vdbeSorterCompare;
}
/*
-** Sort the linked list of records headed at pTask->pList. Return
-** SQLITE_OK if successful, or an SQLite error code (i.e. SQLITE_NOMEM) if
+** Sort the linked list of records headed at pTask->pList. Return
+** SQLITE_OK if successful, or an SQLite error code (i.e. SQLITE_NOMEM) if
** an error occurs.
*/
static int vdbeSorterSort(SortSubtask *pTask, SorterList *pList){
@@ -99112,8 +95320,8 @@ static int vdbeSorterSort(SortSubtask *pTask, SorterList *pList){
}
pList->pList = p;
- assert( pTask->pUnpacked->errCode==SQLITE_OK
- || pTask->pUnpacked->errCode==SQLITE_NOMEM
+ assert( pTask->pUnpacked->errCode==SQLITE_OK
+ || pTask->pUnpacked->errCode==SQLITE_NOMEM
);
return pTask->pUnpacked->errCode;
}
@@ -99154,8 +95362,8 @@ static void vdbePmaWriteBlob(PmaWriter *p, u8 *pData, int nData){
memcpy(&p->aBuffer[p->iBufEnd], &pData[nData-nRem], nCopy);
p->iBufEnd += nCopy;
if( p->iBufEnd==p->nBuffer ){
- p->eFWErr = sqlite3OsWrite(p->pFd,
- &p->aBuffer[p->iBufStart], p->iBufEnd - p->iBufStart,
+ p->eFWErr = sqlite3OsWrite(p->pFd,
+ &p->aBuffer[p->iBufStart], p->iBufEnd - p->iBufStart,
p->iWriteOff + p->iBufStart
);
p->iBufStart = p->iBufEnd = 0;
@@ -99170,7 +95378,7 @@ static void vdbePmaWriteBlob(PmaWriter *p, u8 *pData, int nData){
/*
** Flush any buffered data to disk and clean up the PMA-writer object.
** The results of using the PMA-writer after this call are undefined.
-** Return SQLITE_OK if flushing the buffered data succeeds or is not
+** Return SQLITE_OK if flushing the buffered data succeeds or is not
** required. Otherwise, return an SQLite error code.
**
** Before returning, set *piEof to the offset immediately following the
@@ -99179,8 +95387,8 @@ static void vdbePmaWriteBlob(PmaWriter *p, u8 *pData, int nData){
static int vdbePmaWriterFinish(PmaWriter *p, i64 *piEof){
int rc;
if( p->eFWErr==0 && ALWAYS(p->aBuffer) && p->iBufEnd>p->iBufStart ){
- p->eFWErr = sqlite3OsWrite(p->pFd,
- &p->aBuffer[p->iBufStart], p->iBufEnd - p->iBufStart,
+ p->eFWErr = sqlite3OsWrite(p->pFd,
+ &p->aBuffer[p->iBufStart], p->iBufEnd - p->iBufStart,
p->iWriteOff + p->iBufStart
);
}
@@ -99192,11 +95400,11 @@ static int vdbePmaWriterFinish(PmaWriter *p, i64 *piEof){
}
/*
-** Write value iVal encoded as a varint to the PMA. Return
+** Write value iVal encoded as a varint to the PMA. Return
** SQLITE_OK if successful, or an SQLite error code if an error occurs.
*/
static void vdbePmaWriteVarint(PmaWriter *p, u64 iVal){
- int nByte;
+ int nByte;
u8 aByte[10];
nByte = sqlite3PutVarint(aByte, iVal);
vdbePmaWriteBlob(p, aByte, nByte);
@@ -99204,7 +95412,7 @@ static void vdbePmaWriteVarint(PmaWriter *p, u64 iVal){
/*
** Write the current contents of in-memory linked-list pList to a level-0
-** PMA in the temp file belonging to sub-task pTask. Return SQLITE_OK if
+** PMA in the temp file belonging to sub-task pTask. Return SQLITE_OK if
** successful, or an SQLite error code otherwise.
**
** The format of a PMA is:
@@ -99212,8 +95420,8 @@ static void vdbePmaWriteVarint(PmaWriter *p, u64 iVal){
** * A varint. This varint contains the total number of bytes of content
** in the PMA (not including the varint itself).
**
-** * One or more records packed end-to-end in order of ascending keys.
-** Each record consists of a varint followed by a blob of data (the
+** * One or more records packed end-to-end in order of ascending keys.
+** Each record consists of a varint followed by a blob of data (the
** key). The varint is the number of bytes in the blob of data.
*/
static int vdbeSorterListToPMA(SortSubtask *pTask, SorterList *pList){
@@ -99222,7 +95430,7 @@ static int vdbeSorterListToPMA(SortSubtask *pTask, SorterList *pList){
PmaWriter writer; /* Object used to write to the file */
#ifdef SQLITE_DEBUG
- /* Set iSz to the expected size of file pTask->file after writing the PMA.
+ /* Set iSz to the expected size of file pTask->file after writing the PMA.
** This is used by an assert() statement at the end of this function. */
i64 iSz = pList->szPMA + sqlite3VarintLen(pList->szPMA) + pTask->file.iEof;
#endif
@@ -99375,7 +95583,7 @@ static int vdbeSorterFlushPMA(VdbeSorter *pSorter){
SortSubtask *pTask = 0; /* Thread context used to create new PMA */
int nWorker = (pSorter->nTask-1);
- /* Set the flag to indicate that at least one PMA has been written.
+ /* Set the flag to indicate that at least one PMA has been written.
** Or will be, anyhow. */
pSorter->bUsePMA = 1;
@@ -99385,7 +95593,7 @@ static int vdbeSorterFlushPMA(VdbeSorter *pSorter){
** the background thread from a sub-tasks previous turn is still running,
** skip it. If the first (pSorter->nTask-1) sub-tasks are all still busy,
** fall back to using the final sub-task. The first (pSorter->nTask-1)
- ** sub-tasks are prefered as they use background threads - the final
+ ** sub-tasks are prefered as they use background threads - the final
** sub-task uses the main thread. */
for(i=0; iiPrev + i + 1) % nWorker;
@@ -99449,7 +95657,7 @@ SQLITE_PRIVATE int sqlite3VdbeSorterWrite(
assert( pCsr->eCurType==CURTYPE_SORTER );
pSorter = pCsr->uc.pSorter;
- getVarint32((const u8*)&pVal->z[1], t);
+ getVarint32NR((const u8*)&pVal->z[1], t);
if( t>0 && t<10 && t!=7 ){
pSorter->typeMask &= SORTER_TYPE_INTEGER;
}else if( t>10 && (t & 0x01) ){
@@ -99466,14 +95674,14 @@ SQLITE_PRIVATE int sqlite3VdbeSorterWrite(
** If using the single large allocation mode (pSorter->aMemory!=0), then
** flush the contents of memory to a new PMA if (a) at least one value is
** already in memory and (b) the new value will not fit in memory.
- **
+ **
** Or, if using separate allocations for each record, flush the contents
** of memory to a PMA if either of the following are true:
**
- ** * The total memory allocated for the in-memory list is greater
+ ** * The total memory allocated for the in-memory list is greater
** than (page-size * cache-size), or
**
- ** * The total memory allocated for the in-memory list is greater
+ ** * The total memory allocated for the in-memory list is greater
** than (page-size * 10) and sqlite3HeapNearlyFull() returns true.
*/
nReq = pVal->n + sizeof(SorterRecord);
@@ -99612,11 +95820,11 @@ static int vdbeIncrBgPopulate(IncrMerger *pIncr){
** aFile[0] such that the PmaReader should start rereading it from the
** beginning.
**
-** For single-threaded objects, this is accomplished by literally reading
-** keys from pIncr->pMerger and repopulating aFile[0].
+** For single-threaded objects, this is accomplished by literally reading
+** keys from pIncr->pMerger and repopulating aFile[0].
**
-** For multi-threaded objects, all that is required is to wait until the
-** background thread is finished (if it is not already) and then swap
+** For multi-threaded objects, all that is required is to wait until the
+** background thread is finished (if it is not already) and then swap
** aFile[0] and aFile[1] in place. If the contents of pMerger have not
** been exhausted, this function also launches a new background thread
** to populate the new aFile[1].
@@ -99756,7 +95964,7 @@ static void vdbeMergeEngineCompare(
#define INCRINIT_TASK 1
#define INCRINIT_ROOT 2
-/*
+/*
** Forward reference required as the vdbeIncrMergeInit() and
** vdbePmaReaderIncrInit() routines are called mutually recursively when
** building a merge tree.
@@ -99765,7 +95973,7 @@ static int vdbePmaReaderIncrInit(PmaReader *pReadr, int eMode);
/*
** Initialize the MergeEngine object passed as the second argument. Once this
-** function returns, the first key of merged data may be read from the
+** function returns, the first key of merged data may be read from the
** MergeEngine object in the usual fashion.
**
** If argument eMode is INCRINIT_ROOT, then it is assumed that any IncrMerge
@@ -99775,8 +95983,8 @@ static int vdbePmaReaderIncrInit(PmaReader *pReadr, int eMode);
** required is to call vdbePmaReaderNext() on each PmaReader to point it at
** its first key.
**
-** Otherwise, if eMode is any value other than INCRINIT_ROOT, then use
-** vdbePmaReaderIncrMergeInit() to initialize each PmaReader that feeds data
+** Otherwise, if eMode is any value other than INCRINIT_ROOT, then use
+** vdbePmaReaderIncrMergeInit() to initialize each PmaReader that feeds data
** to pMerger.
**
** SQLITE_OK is returned if successful, or an SQLite error code otherwise.
@@ -99831,19 +96039,19 @@ static int vdbeMergeEngineInit(
** object at (pReadr->pIncr).
**
** If argument eMode is set to INCRINIT_NORMAL, then all PmaReaders
-** in the sub-tree headed by pReadr are also initialized. Data is then
-** loaded into the buffers belonging to pReadr and it is set to point to
+** in the sub-tree headed by pReadr are also initialized. Data is then
+** loaded into the buffers belonging to pReadr and it is set to point to
** the first key in its range.
**
** If argument eMode is set to INCRINIT_TASK, then pReadr is guaranteed
** to be a multi-threaded PmaReader and this function is being called in a
-** background thread. In this case all PmaReaders in the sub-tree are
+** background thread. In this case all PmaReaders in the sub-tree are
** initialized as for INCRINIT_NORMAL and the aFile[1] buffer belonging to
** pReadr is populated. However, pReadr itself is not set up to point
** to its first key. A call to vdbePmaReaderNext() is still required to do
-** that.
+** that.
**
-** The reason this function does not call vdbePmaReaderNext() immediately
+** The reason this function does not call vdbePmaReaderNext() immediately
** in the INCRINIT_TASK case is that vdbePmaReaderNext() assumes that it has
** to block on thread (pTask->thread) before accessing aFile[1]. But, since
** this entire function is being run by thread (pTask->thread), that will
@@ -99899,12 +96107,12 @@ static int vdbePmaReaderIncrMergeInit(PmaReader *pReadr, int eMode){
if( rc==SQLITE_OK && pIncr->bUseThread ){
/* Use the current thread to populate aFile[1], even though this
** PmaReader is multi-threaded. If this is an INCRINIT_TASK object,
- ** then this function is already running in background thread
- ** pIncr->pTask->thread.
+ ** then this function is already running in background thread
+ ** pIncr->pTask->thread.
**
- ** If this is the INCRINIT_ROOT object, then it is running in the
+ ** If this is the INCRINIT_ROOT object, then it is running in the
** main VDBE thread. But that is Ok, as that thread cannot return
- ** control to the VDBE or proceed with anything useful until the
+ ** control to the VDBE or proceed with anything useful until the
** first results are ready from this merger object anyway.
*/
assert( eMode==INCRINIT_ROOT || eMode==INCRINIT_TASK );
@@ -99921,7 +96129,7 @@ static int vdbePmaReaderIncrMergeInit(PmaReader *pReadr, int eMode){
#if SQLITE_MAX_WORKER_THREADS>0
/*
-** The main routine for vdbePmaReaderIncrMergeInit() operations run in
+** The main routine for vdbePmaReaderIncrMergeInit() operations run in
** background threads.
*/
static void *vdbePmaReaderBgIncrInit(void *pCtx){
@@ -99939,8 +96147,8 @@ static void *vdbePmaReaderBgIncrInit(void *pCtx){
** (if pReadr->pIncr==0), then this function is a no-op. Otherwise, it invokes
** the vdbePmaReaderIncrMergeInit() function with the parameters passed to
** this routine to initialize the incremental merge.
-**
-** If the IncrMerger object is multi-threaded (IncrMerger.bUseThread==1),
+**
+** If the IncrMerger object is multi-threaded (IncrMerger.bUseThread==1),
** then a background thread is launched to call vdbePmaReaderIncrMergeInit().
** Or, if the IncrMerger is single threaded, the same function is called
** using the current thread.
@@ -99970,7 +96178,7 @@ static int vdbePmaReaderIncrInit(PmaReader *pReadr, int eMode){
** to NULL and return an SQLite error code.
**
** When this function is called, *piOffset is set to the offset of the
-** first PMA to read from pTask->file. Assuming no error occurs, it is
+** first PMA to read from pTask->file. Assuming no error occurs, it is
** set to the offset immediately following the last byte of the last
** PMA before returning. If an error does occur, then the final value of
** *piOffset is undefined.
@@ -100080,12 +96288,12 @@ static int vdbeSorterAddToTree(
/*
** This function is called as part of a SorterRewind() operation on a sorter
** that has already written two or more level-0 PMAs to one or more temp
-** files. It builds a tree of MergeEngine/IncrMerger/PmaReader objects that
+** files. It builds a tree of MergeEngine/IncrMerger/PmaReader objects that
** can be used to incrementally merge all PMAs on disk.
**
** If successful, SQLITE_OK is returned and *ppOut set to point to the
** MergeEngine object at the root of the tree before returning. Or, if an
-** error occurs, an SQLite error code is returned and the final value
+** error occurs, an SQLite error code is returned and the final value
** of *ppOut is undefined.
*/
static int vdbeSorterMergeTreeBuild(
@@ -100097,8 +96305,8 @@ static int vdbeSorterMergeTreeBuild(
int iTask;
#if SQLITE_MAX_WORKER_THREADS>0
- /* If the sorter uses more than one task, then create the top-level
- ** MergeEngine here. This MergeEngine will read data from exactly
+ /* If the sorter uses more than one task, then create the top-level
+ ** MergeEngine here. This MergeEngine will read data from exactly
** one PmaReader per sub-task. */
assert( pSorter->bUseThreads || pSorter->nTask==1 );
if( pSorter->nTask>1 ){
@@ -100207,7 +96415,7 @@ static int vdbeSorterSetupMerge(VdbeSorter *pSorter){
}
for(iTask=0; rc==SQLITE_OK && iTasknTask; iTask++){
/* Check that:
- **
+ **
** a) The incremental merge object is configured to use the
** right task, and
** b) If it is using task (nTask-1), it is configured to run
@@ -100270,7 +96478,7 @@ SQLITE_PRIVATE int sqlite3VdbeSorterRewind(const VdbeCursor *pCsr, int *pbEof){
return rc;
}
- /* Write the current in-memory list to a PMA. When the VdbeSorterWrite()
+ /* Write the current in-memory list to a PMA. When the VdbeSorterWrite()
** function flushes the contents of memory to disk, it immediately always
** creates a new list consisting of a single key immediately afterwards.
** So the list is never empty at this point. */
@@ -100282,7 +96490,7 @@ SQLITE_PRIVATE int sqlite3VdbeSorterRewind(const VdbeCursor *pCsr, int *pbEof){
vdbeSorterRewindDebug("rewind");
- /* Assuming no errors have occurred, set up a merger structure to
+ /* Assuming no errors have occurred, set up a merger structure to
** incrementally read and merge all remaining PMAs. */
assert( pSorter->pReader==0 );
if( rc==SQLITE_OK ){
@@ -100336,7 +96544,7 @@ SQLITE_PRIVATE int sqlite3VdbeSorterNext(sqlite3 *db, const VdbeCursor *pCsr){
}
/*
-** Return a pointer to a buffer owned by the sorter that contains the
+** Return a pointer to a buffer owned by the sorter that contains the
** current key.
*/
static void *vdbeSorterRowkey(
@@ -100436,6 +96644,433 @@ SQLITE_PRIVATE int sqlite3VdbeSorterCompare(
}
/************** End of vdbesort.c ********************************************/
+/************** Begin file vdbevtab.c ****************************************/
+/*
+** 2020-03-23
+**
+** The author disclaims copyright to this source code. In place of
+** a legal notice, here is a blessing:
+**
+** May you do good and not evil.
+** May you find forgiveness for yourself and forgive others.
+** May you share freely, never taking more than you give.
+**
+*************************************************************************
+**
+** This file implements virtual-tables for examining the bytecode content
+** of a prepared statement.
+*/
+/* #include "sqliteInt.h" */
+#if defined(SQLITE_ENABLE_BYTECODE_VTAB) && !defined(SQLITE_OMIT_VIRTUALTABLE)
+/* #include "vdbeInt.h" */
+
+/* An instance of the bytecode() table-valued function.
+*/
+typedef struct bytecodevtab bytecodevtab;
+struct bytecodevtab {
+ sqlite3_vtab base; /* Base class - must be first */
+ sqlite3 *db; /* Database connection */
+ int bTablesUsed; /* 2 for tables_used(). 0 for bytecode(). */
+};
+
+/* A cursor for scanning through the bytecode
+*/
+typedef struct bytecodevtab_cursor bytecodevtab_cursor;
+struct bytecodevtab_cursor {
+ sqlite3_vtab_cursor base; /* Base class - must be first */
+ sqlite3_stmt *pStmt; /* The statement whose bytecode is displayed */
+ int iRowid; /* The rowid of the output table */
+ int iAddr; /* Address */
+ int needFinalize; /* Cursors owns pStmt and must finalize it */
+ int showSubprograms; /* Provide a listing of subprograms */
+ Op *aOp; /* Operand array */
+ char *zP4; /* Rendered P4 value */
+ const char *zType; /* tables_used.type */
+ const char *zSchema; /* tables_used.schema */
+ const char *zName; /* tables_used.name */
+ Mem sub; /* Subprograms */
+};
+
+/*
+** Create a new bytecode() table-valued function.
+*/
+static int bytecodevtabConnect(
+ sqlite3 *db,
+ void *pAux,
+ int argc, const char *const*argv,
+ sqlite3_vtab **ppVtab,
+ char **pzErr
+){
+ bytecodevtab *pNew;
+ int rc;
+ int isTabUsed = pAux!=0;
+ const char *azSchema[2] = {
+ /* bytecode() schema */
+ "CREATE TABLE x("
+ "addr INT,"
+ "opcode TEXT,"
+ "p1 INT,"
+ "p2 INT,"
+ "p3 INT,"
+ "p4 TEXT,"
+ "p5 INT,"
+ "comment TEXT,"
+ "subprog TEXT,"
+ "stmt HIDDEN"
+ ");",
+
+ /* Tables_used() schema */
+ "CREATE TABLE x("
+ "type TEXT,"
+ "schema TEXT,"
+ "name TEXT,"
+ "wr INT,"
+ "subprog TEXT,"
+ "stmt HIDDEN"
+ ");"
+ };
+
+ rc = sqlite3_declare_vtab(db, azSchema[isTabUsed]);
+ if( rc==SQLITE_OK ){
+ pNew = sqlite3_malloc( sizeof(*pNew) );
+ *ppVtab = (sqlite3_vtab*)pNew;
+ if( pNew==0 ) return SQLITE_NOMEM;
+ memset(pNew, 0, sizeof(*pNew));
+ pNew->db = db;
+ pNew->bTablesUsed = isTabUsed*2;
+ }
+ return rc;
+}
+
+/*
+** This method is the destructor for bytecodevtab objects.
+*/
+static int bytecodevtabDisconnect(sqlite3_vtab *pVtab){
+ bytecodevtab *p = (bytecodevtab*)pVtab;
+ sqlite3_free(p);
+ return SQLITE_OK;
+}
+
+/*
+** Constructor for a new bytecodevtab_cursor object.
+*/
+static int bytecodevtabOpen(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){
+ bytecodevtab *pVTab = (bytecodevtab*)p;
+ bytecodevtab_cursor *pCur;
+ pCur = sqlite3_malloc( sizeof(*pCur) );
+ if( pCur==0 ) return SQLITE_NOMEM;
+ memset(pCur, 0, sizeof(*pCur));
+ sqlite3VdbeMemInit(&pCur->sub, pVTab->db, 1);
+ *ppCursor = &pCur->base;
+ return SQLITE_OK;
+}
+
+/*
+** Clear all internal content from a bytecodevtab cursor.
+*/
+static void bytecodevtabCursorClear(bytecodevtab_cursor *pCur){
+ sqlite3_free(pCur->zP4);
+ pCur->zP4 = 0;
+ sqlite3VdbeMemRelease(&pCur->sub);
+ sqlite3VdbeMemSetNull(&pCur->sub);
+ if( pCur->needFinalize ){
+ sqlite3_finalize(pCur->pStmt);
+ }
+ pCur->pStmt = 0;
+ pCur->needFinalize = 0;
+ pCur->zType = 0;
+ pCur->zSchema = 0;
+ pCur->zName = 0;
+}
+
+/*
+** Destructor for a bytecodevtab_cursor.
+*/
+static int bytecodevtabClose(sqlite3_vtab_cursor *cur){
+ bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur;
+ bytecodevtabCursorClear(pCur);
+ sqlite3_free(pCur);
+ return SQLITE_OK;
+}
+
+
+/*
+** Advance a bytecodevtab_cursor to its next row of output.
+*/
+static int bytecodevtabNext(sqlite3_vtab_cursor *cur){
+ bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur;
+ bytecodevtab *pTab = (bytecodevtab*)cur->pVtab;
+ int rc;
+ if( pCur->zP4 ){
+ sqlite3_free(pCur->zP4);
+ pCur->zP4 = 0;
+ }
+ if( pCur->zName ){
+ pCur->zName = 0;
+ pCur->zType = 0;
+ pCur->zSchema = 0;
+ }
+ rc = sqlite3VdbeNextOpcode(
+ (Vdbe*)pCur->pStmt,
+ pCur->showSubprograms ? &pCur->sub : 0,
+ pTab->bTablesUsed,
+ &pCur->iRowid,
+ &pCur->iAddr,
+ &pCur->aOp);
+ if( rc!=SQLITE_OK ){
+ sqlite3VdbeMemSetNull(&pCur->sub);
+ pCur->aOp = 0;
+ }
+ return SQLITE_OK;
+}
+
+/*
+** Return TRUE if the cursor has been moved off of the last
+** row of output.
+*/
+static int bytecodevtabEof(sqlite3_vtab_cursor *cur){
+ bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur;
+ return pCur->aOp==0;
+}
+
+/*
+** Return values of columns for the row at which the bytecodevtab_cursor
+** is currently pointing.
+*/
+static int bytecodevtabColumn(
+ sqlite3_vtab_cursor *cur, /* The cursor */
+ sqlite3_context *ctx, /* First argument to sqlite3_result_...() */
+ int i /* Which column to return */
+){
+ bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur;
+ bytecodevtab *pVTab = (bytecodevtab*)cur->pVtab;
+ Op *pOp = pCur->aOp + pCur->iAddr;
+ if( pVTab->bTablesUsed ){
+ if( i==4 ){
+ i = 8;
+ }else{
+ if( i<=2 && pCur->zType==0 ){
+ Schema *pSchema;
+ HashElem *k;
+ int iDb = pOp->p3;
+ Pgno iRoot = (Pgno)pOp->p2;
+ sqlite3 *db = pVTab->db;
+ pSchema = db->aDb[iDb].pSchema;
+ pCur->zSchema = db->aDb[iDb].zDbSName;
+ for(k=sqliteHashFirst(&pSchema->tblHash); k; k=sqliteHashNext(k)){
+ Table *pTab = (Table*)sqliteHashData(k);
+ if( !IsVirtual(pTab) && pTab->tnum==iRoot ){
+ pCur->zName = pTab->zName;
+ pCur->zType = "table";
+ break;
+ }
+ }
+ if( pCur->zName==0 ){
+ for(k=sqliteHashFirst(&pSchema->idxHash); k; k=sqliteHashNext(k)){
+ Index *pIdx = (Index*)sqliteHashData(k);
+ if( pIdx->tnum==iRoot ){
+ pCur->zName = pIdx->zName;
+ pCur->zType = "index";
+ }
+ }
+ }
+ }
+ i += 10;
+ }
+ }
+ switch( i ){
+ case 0: /* addr */
+ sqlite3_result_int(ctx, pCur->iAddr);
+ break;
+ case 1: /* opcode */
+ sqlite3_result_text(ctx, (char*)sqlite3OpcodeName(pOp->opcode),
+ -1, SQLITE_STATIC);
+ break;
+ case 2: /* p1 */
+ sqlite3_result_int(ctx, pOp->p1);
+ break;
+ case 3: /* p2 */
+ sqlite3_result_int(ctx, pOp->p2);
+ break;
+ case 4: /* p3 */
+ sqlite3_result_int(ctx, pOp->p3);
+ break;
+ case 5: /* p4 */
+ case 7: /* comment */
+ if( pCur->zP4==0 ){
+ pCur->zP4 = sqlite3VdbeDisplayP4(pVTab->db, pOp);
+ }
+ if( i==5 ){
+ sqlite3_result_text(ctx, pCur->zP4, -1, SQLITE_STATIC);
+ }else{
+#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS
+ char *zCom = sqlite3VdbeDisplayComment(pVTab->db, pOp, pCur->zP4);
+ sqlite3_result_text(ctx, zCom, -1, sqlite3_free);
+#endif
+ }
+ break;
+ case 6: /* p5 */
+ sqlite3_result_int(ctx, pOp->p5);
+ break;
+ case 8: { /* subprog */
+ Op *aOp = pCur->aOp;
+ assert( aOp[0].opcode==OP_Init );
+ assert( aOp[0].p4.z==0 || strncmp(aOp[0].p4.z,"-" "- ",3)==0 );
+ if( pCur->iRowid==pCur->iAddr+1 ){
+ break; /* Result is NULL for the main program */
+ }else if( aOp[0].p4.z!=0 ){
+ sqlite3_result_text(ctx, aOp[0].p4.z+3, -1, SQLITE_STATIC);
+ }else{
+ sqlite3_result_text(ctx, "(FK)", 4, SQLITE_STATIC);
+ }
+ break;
+ }
+ case 10: /* tables_used.type */
+ sqlite3_result_text(ctx, pCur->zType, -1, SQLITE_STATIC);
+ break;
+ case 11: /* tables_used.schema */
+ sqlite3_result_text(ctx, pCur->zSchema, -1, SQLITE_STATIC);
+ break;
+ case 12: /* tables_used.name */
+ sqlite3_result_text(ctx, pCur->zName, -1, SQLITE_STATIC);
+ break;
+ case 13: /* tables_used.wr */
+ sqlite3_result_int(ctx, pOp->opcode==OP_OpenWrite);
+ break;
+ }
+ return SQLITE_OK;
+}
+
+/*
+** Return the rowid for the current row. In this implementation, the
+** rowid is the same as the output value.
+*/
+static int bytecodevtabRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){
+ bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur;
+ *pRowid = pCur->iRowid;
+ return SQLITE_OK;
+}
+
+/*
+** Initialize a cursor.
+**
+** idxNum==0 means show all subprograms
+** idxNum==1 means show only the main bytecode and omit subprograms.
+*/
+static int bytecodevtabFilter(
+ sqlite3_vtab_cursor *pVtabCursor,
+ int idxNum, const char *idxStr,
+ int argc, sqlite3_value **argv
+){
+ bytecodevtab_cursor *pCur = (bytecodevtab_cursor *)pVtabCursor;
+ bytecodevtab *pVTab = (bytecodevtab *)pVtabCursor->pVtab;
+ int rc = SQLITE_OK;
+
+ bytecodevtabCursorClear(pCur);
+ pCur->iRowid = 0;
+ pCur->iAddr = 0;
+ pCur->showSubprograms = idxNum==0;
+ assert( argc==1 );
+ if( sqlite3_value_type(argv[0])==SQLITE_TEXT ){
+ const char *zSql = (const char*)sqlite3_value_text(argv[0]);
+ if( zSql==0 ){
+ rc = SQLITE_NOMEM;
+ }else{
+ rc = sqlite3_prepare_v2(pVTab->db, zSql, -1, &pCur->pStmt, 0);
+ pCur->needFinalize = 1;
+ }
+ }else{
+ pCur->pStmt = (sqlite3_stmt*)sqlite3_value_pointer(argv[0],"stmt-pointer");
+ }
+ if( pCur->pStmt==0 ){
+ pVTab->base.zErrMsg = sqlite3_mprintf(
+ "argument to %s() is not a valid SQL statement",
+ pVTab->bTablesUsed ? "tables_used" : "bytecode"
+ );
+ rc = SQLITE_ERROR;
+ }else{
+ bytecodevtabNext(pVtabCursor);
+ }
+ return rc;
+}
+
+/*
+** We must have a single stmt=? constraint that will be passed through
+** into the xFilter method. If there is no valid stmt=? constraint,
+** then return an SQLITE_CONSTRAINT error.
+*/
+static int bytecodevtabBestIndex(
+ sqlite3_vtab *tab,
+ sqlite3_index_info *pIdxInfo
+){
+ int i;
+ int rc = SQLITE_CONSTRAINT;
+ struct sqlite3_index_constraint *p;
+ bytecodevtab *pVTab = (bytecodevtab*)tab;
+ int iBaseCol = pVTab->bTablesUsed ? 4 : 8;
+ pIdxInfo->estimatedCost = (double)100;
+ pIdxInfo->estimatedRows = 100;
+ pIdxInfo->idxNum = 0;
+ for(i=0, p=pIdxInfo->aConstraint; inConstraint; i++, p++){
+ if( p->usable==0 ) continue;
+ if( p->op==SQLITE_INDEX_CONSTRAINT_EQ && p->iColumn==iBaseCol+1 ){
+ rc = SQLITE_OK;
+ pIdxInfo->aConstraintUsage[i].omit = 1;
+ pIdxInfo->aConstraintUsage[i].argvIndex = 1;
+ }
+ if( p->op==SQLITE_INDEX_CONSTRAINT_ISNULL && p->iColumn==iBaseCol ){
+ pIdxInfo->aConstraintUsage[i].omit = 1;
+ pIdxInfo->idxNum = 1;
+ }
+ }
+ return rc;
+}
+
+/*
+** This following structure defines all the methods for the
+** virtual table.
+*/
+static sqlite3_module bytecodevtabModule = {
+ /* iVersion */ 0,
+ /* xCreate */ 0,
+ /* xConnect */ bytecodevtabConnect,
+ /* xBestIndex */ bytecodevtabBestIndex,
+ /* xDisconnect */ bytecodevtabDisconnect,
+ /* xDestroy */ 0,
+ /* xOpen */ bytecodevtabOpen,
+ /* xClose */ bytecodevtabClose,
+ /* xFilter */ bytecodevtabFilter,
+ /* xNext */ bytecodevtabNext,
+ /* xEof */ bytecodevtabEof,
+ /* xColumn */ bytecodevtabColumn,
+ /* xRowid */ bytecodevtabRowid,
+ /* xUpdate */ 0,
+ /* xBegin */ 0,
+ /* xSync */ 0,
+ /* xCommit */ 0,
+ /* xRollback */ 0,
+ /* xFindMethod */ 0,
+ /* xRename */ 0,
+ /* xSavepoint */ 0,
+ /* xRelease */ 0,
+ /* xRollbackTo */ 0,
+ /* xShadowName */ 0
+};
+
+
+SQLITE_PRIVATE int sqlite3VdbeBytecodeVtabInit(sqlite3 *db){
+ int rc;
+ rc = sqlite3_create_module(db, "bytecode", &bytecodevtabModule, 0);
+ if( rc==SQLITE_OK ){
+ rc = sqlite3_create_module(db, "tables_used", &bytecodevtabModule, &db);
+ }
+ return rc;
+}
+#elif defined(SQLITE_ENABLE_BYTECODE_VTAB)
+SQLITE_PRIVATE int sqlite3VdbeBytecodeVtabInit(sqlite3 *db){ return SQLITE_OK; }
+#endif /* SQLITE_ENABLE_BYTECODE_VTAB */
+
+/************** End of vdbevtab.c ********************************************/
/************** Begin file memjournal.c **************************************/
/*
** 2008 October 7
@@ -100541,7 +97176,7 @@ static int memjrnlRead(
assert( p->readpoint.iOffset==0 || p->readpoint.pChunk!=0 );
if( p->readpoint.iOffset!=iOfst || iOfst==0 ){
sqlite3_int64 iOff = 0;
- for(pChunk=p->pFirst;
+ for(pChunk=p->pFirst;
ALWAYS(pChunk) && (iOff+p->nChunkSize)<=iOfst;
pChunk=pChunk->pNext
){
@@ -100576,7 +97211,7 @@ static void memjrnlFreeChunks(MemJournal *p){
for(pIter=p->pFirst; pIter; pIter=pNext){
pNext = pIter->pNext;
sqlite3_free(pIter);
- }
+ }
p->pFirst = 0;
}
@@ -100648,7 +97283,7 @@ static int memjrnlWrite(
** access writes are not required. The only exception to this is when
** the in-memory journal is being used by a connection using the
** atomic-write optimization. In this case the first 28 bytes of the
- ** journal file may be written as part of committing the transaction. */
+ ** journal file may be written as part of committing the transaction. */
assert( iOfst==p->endpoint.iOffset || iOfst==0 );
#if defined(SQLITE_ENABLE_ATOMIC_WRITE) \
|| defined(SQLITE_ENABLE_BATCH_ATOMIC_WRITE)
@@ -100699,7 +97334,7 @@ static int memjrnlWrite(
**
** If the journal file is already on disk, truncate it there. Or, if it
** is still in main memory but is being truncated to zero bytes in size,
-** ignore
+** ignore
*/
static int memjrnlTruncate(sqlite3_file *pJfd, sqlite_int64 size){
MemJournal *p = (MemJournal *)pJfd;
@@ -100726,8 +97361,8 @@ static int memjrnlClose(sqlite3_file *pJfd){
/*
** Sync the file.
**
-** If the real file has been created, call its xSync method. Otherwise,
-** syncing an in-memory journal is a no-op.
+** If the real file has been created, call its xSync method. Otherwise,
+** syncing an in-memory journal is a no-op.
*/
static int memjrnlSync(sqlite3_file *pJfd, int flags){
UNUSED_PARAMETER2(pJfd, flags);
@@ -100768,11 +97403,11 @@ static const struct sqlite3_io_methods MemJournalMethods = {
0 /* xUnfetch */
};
-/*
-** Open a journal file.
+/*
+** Open a journal file.
**
-** The behaviour of the journal file depends on the value of parameter
-** nSpill. If nSpill is 0, then the journal file is always create and
+** The behaviour of the journal file depends on the value of parameter
+** nSpill. If nSpill is 0, then the journal file is always create and
** accessed using the underlying VFS. If nSpill is less than zero, then
** all content is always stored in main-memory. Finally, if nSpill is a
** positive value, then the journal file is initially created in-memory
@@ -100805,7 +97440,7 @@ SQLITE_PRIVATE int sqlite3JournalOpen(
assert( MEMJOURNAL_DFLT_FILECHUNKSIZE==fileChunkSize(p->nChunkSize) );
}
- p->pMethod = (const sqlite3_io_methods*)&MemJournalMethods;
+ pJfd->pMethods = (const sqlite3_io_methods*)&MemJournalMethods;
p->nSpill = nSpill;
p->flags = flags;
p->zJournal = zName;
@@ -100823,15 +97458,15 @@ SQLITE_PRIVATE void sqlite3MemJournalOpen(sqlite3_file *pJfd){
#if defined(SQLITE_ENABLE_ATOMIC_WRITE) \
|| defined(SQLITE_ENABLE_BATCH_ATOMIC_WRITE)
/*
-** If the argument p points to a MemJournal structure that is not an
+** If the argument p points to a MemJournal structure that is not an
** in-memory-only journal file (i.e. is one that was opened with a +ve
-** nSpill parameter or as SQLITE_OPEN_MAIN_JOURNAL), and the underlying
+** nSpill parameter or as SQLITE_OPEN_MAIN_JOURNAL), and the underlying
** file has not yet been created, create it now.
*/
SQLITE_PRIVATE int sqlite3JournalCreate(sqlite3_file *pJfd){
int rc = SQLITE_OK;
MemJournal *p = (MemJournal*)pJfd;
- if( p->pMethod==&MemJournalMethods && (
+ if( pJfd->pMethods==&MemJournalMethods && (
#ifdef SQLITE_ENABLE_ATOMIC_WRITE
p->nSpill>0
#else
@@ -100859,7 +97494,7 @@ SQLITE_PRIVATE int sqlite3JournalIsInMemory(sqlite3_file *p){
return p->pMethods==&MemJournalMethods;
}
-/*
+/*
** Return the number of bytes required to store a JournalFile that uses vfs
** pVfs to create the underlying on-disk files.
*/
@@ -100944,8 +97579,8 @@ static SQLITE_NOINLINE int walkExpr(Walker *pWalker, Expr *pExpr){
rc = pWalker->xExprCallback(pWalker, pExpr);
if( rc ) return rc & WRC_Abort;
if( !ExprHasProperty(pExpr,(EP_TokenOnly|EP_Leaf)) ){
+ assert( pExpr->x.pList==0 || pExpr->pRight==0 );
if( pExpr->pLeft && walkExpr(pWalker, pExpr->pLeft) ) return WRC_Abort;
- assert( pExpr->x.pList==0 || pExpr->pRight==0 );
if( pExpr->pRight ){
assert( !ExprHasProperty(pExpr, EP_WinFunc) );
pExpr = pExpr->pRight;
@@ -101018,7 +97653,7 @@ SQLITE_PRIVATE int sqlite3WalkSelectExpr(Walker *pWalker, Select *p){
** Walk the parse trees associated with all subqueries in the
** FROM clause of SELECT statement p. Do not invoke the select
** callback on p, but do invoke it on each FROM clause subquery
-** and on any subqueries further down in the tree. Return
+** and on any subqueries further down in the tree. Return
** WRC_Abort or WRC_Continue;
*/
SQLITE_PRIVATE int sqlite3WalkSelectFrom(Walker *pWalker, Select *p){
@@ -101027,24 +97662,25 @@ SQLITE_PRIVATE int sqlite3WalkSelectFrom(Walker *pWalker, Select *p){
struct SrcList_item *pItem;
pSrc = p->pSrc;
- assert( pSrc!=0 );
- for(i=pSrc->nSrc, pItem=pSrc->a; i>0; i--, pItem++){
- if( pItem->pSelect && sqlite3WalkSelect(pWalker, pItem->pSelect) ){
- return WRC_Abort;
- }
- if( pItem->fg.isTabFunc
- && sqlite3WalkExprList(pWalker, pItem->u1.pFuncArg)
- ){
- return WRC_Abort;
+ if( pSrc ){
+ for(i=pSrc->nSrc, pItem=pSrc->a; i>0; i--, pItem++){
+ if( pItem->pSelect && sqlite3WalkSelect(pWalker, pItem->pSelect) ){
+ return WRC_Abort;
+ }
+ if( pItem->fg.isTabFunc
+ && sqlite3WalkExprList(pWalker, pItem->u1.pFuncArg)
+ ){
+ return WRC_Abort;
+ }
}
}
return WRC_Continue;
-}
+}
/*
** Call sqlite3WalkExpr() for every expression in Select statement p.
** Invoke sqlite3WalkSelect() for subqueries in the FROM clause and
-** on the compound select chain, p->pPrior.
+** on the compound select chain, p->pPrior.
**
** If it is not NULL, the xSelectCallback() callback is invoked before
** the walk of the expressions and FROM clause. The xSelectCallback2()
@@ -101078,6 +97714,43 @@ SQLITE_PRIVATE int sqlite3WalkSelect(Walker *pWalker, Select *p){
return WRC_Continue;
}
+/* Increase the walkerDepth when entering a subquery, and
+** descrease when leaving the subquery.
+*/
+SQLITE_PRIVATE int sqlite3WalkerDepthIncrease(Walker *pWalker, Select *pSelect){
+ UNUSED_PARAMETER(pSelect);
+ pWalker->walkerDepth++;
+ return WRC_Continue;
+}
+SQLITE_PRIVATE void sqlite3WalkerDepthDecrease(Walker *pWalker, Select *pSelect){
+ UNUSED_PARAMETER(pSelect);
+ pWalker->walkerDepth--;
+}
+
+
+/*
+** No-op routine for the parse-tree walker.
+**
+** When this routine is the Walker.xExprCallback then expression trees
+** are walked without any actions being taken at each node. Presumably,
+** when this routine is used for Walker.xExprCallback then
+** Walker.xSelectCallback is set to do something useful for every
+** subquery in the parser tree.
+*/
+SQLITE_PRIVATE int sqlite3ExprWalkNoop(Walker *NotUsed, Expr *NotUsed2){
+ UNUSED_PARAMETER2(NotUsed, NotUsed2);
+ return WRC_Continue;
+}
+
+/*
+** No-op routine for the parse-tree walker for SELECT statements.
+** subquery in the parser tree.
+*/
+SQLITE_PRIVATE int sqlite3SelectWalkNoop(Walker *NotUsed, Select *NotUsed2){
+ UNUSED_PARAMETER2(NotUsed, NotUsed2);
+ return WRC_Continue;
+}
+
/************** End of walker.c **********************************************/
/************** Begin file resolve.c *****************************************/
/*
@@ -101098,6 +97771,11 @@ SQLITE_PRIVATE int sqlite3WalkSelect(Walker *pWalker, Select *p){
*/
/* #include "sqliteInt.h" */
+/*
+** Magic table number to mean the EXCLUDED table in an UPSERT statement.
+*/
+#define EXCLUDED_TABLE_NUMBER 2
+
/*
** Walk the expression tree pExpr and increase the aggregate function
** depth (the Expr.op2 field) by N on every TK_AGG_FUNCTION node.
@@ -101106,6 +97784,8 @@ SQLITE_PRIVATE int sqlite3WalkSelect(Walker *pWalker, Select *p){
**
** incrAggFunctionDepth(pExpr,n) is the main routine. incrAggDepth(..)
** is a helper function - a callback for the tree walker.
+**
+** See also the sqlite3WindowExtraAggFuncDepth() routine in window.c
*/
static int incrAggDepth(Walker *pWalker, Expr *pExpr){
if( pExpr->op==TK_AGG_FUNCTION ) pExpr->op2 += pWalker->u.n;
@@ -101163,7 +97843,7 @@ static void resolveAlias(
pDup = sqlite3ExprAddCollateString(pParse, pDup, pExpr->u.zToken);
}
- /* Before calling sqlite3ExprDelete(), set the EP_Static flag. This
+ /* Before calling sqlite3ExprDelete(), set the EP_Static flag. This
** prevents ExprDelete() from deleting the Expr structure itself,
** allowing it to be repopulated by the memcpy() on the following line.
** The pExpr->u.zToken might point into memory that will be freed by the
@@ -101214,13 +97894,16 @@ static int nameInUsingClause(IdList *pUsing, const char *zCol){
** and zCol. If any of zDb, zTab, and zCol are NULL then those fields will
** match anything.
*/
-SQLITE_PRIVATE int sqlite3MatchSpanName(
- const char *zSpan,
+SQLITE_PRIVATE int sqlite3MatchEName(
+ const struct ExprList_item *pItem,
const char *zCol,
const char *zTab,
const char *zDb
){
int n;
+ const char *zSpan;
+ if( pItem->eEName!=ENAME_TAB ) return 0;
+ zSpan = pItem->zEName;
for(n=0; ALWAYS(zSpan[n]) && zSpan[n]!='.'; n++){}
if( zDb && (sqlite3StrNICmp(zSpan, zDb, n)!=0 || zDb[n]!=0) ){
return 0;
@@ -101254,9 +97937,34 @@ static int areDoubleQuotedStringsEnabled(sqlite3 *db, NameContext *pTopNC){
}
}
+/*
+** The argument is guaranteed to be a non-NULL Expr node of type TK_COLUMN.
+** return the appropriate colUsed mask.
+*/
+SQLITE_PRIVATE Bitmask sqlite3ExprColUsed(Expr *pExpr){
+ int n;
+ Table *pExTab;
+
+ n = pExpr->iColumn;
+ pExTab = pExpr->y.pTab;
+ assert( pExTab!=0 );
+ if( (pExTab->tabFlags & TF_HasGenerated)!=0
+ && (pExTab->aCol[n].colFlags & COLFLAG_GENERATED)!=0
+ ){
+ testcase( pExTab->nCol==BMS-1 );
+ testcase( pExTab->nCol==BMS );
+ return pExTab->nCol>=BMS ? ALLBITS : MASKBIT(pExTab->nCol)-1;
+ }else{
+ testcase( n==BMS-1 );
+ testcase( n==BMS );
+ if( n>=BMS ) n = BMS-1;
+ return ((Bitmask)1)<nDb && sqlite3StrICmp("main", zDb)==0 ){
+ /* This branch is taken when the main database has been renamed
+ ** using SQLITE_DBCONFIG_MAINDBNAME. */
+ pSchema = db->aDb[0].pSchema;
+ zDb = db->aDb[0].zDbSName;
+ }
}
}
@@ -101342,6 +98056,7 @@ static int lookupName(
if( pSrcList ){
for(i=0, pItem=pSrcList->a; inSrc; i++, pItem++){
+ u8 hCol;
pTab = pItem->pTab;
assert( pTab!=0 && pTab->zName!=0 );
assert( pTab->nCol>0 );
@@ -101349,7 +98064,7 @@ static int lookupName(
int hit = 0;
pEList = pItem->pSelect->pEList;
for(j=0; jnExpr; j++){
- if( sqlite3MatchSpanName(pEList->a[j].zSpan, zCol, zTab, zDb) ){
+ if( sqlite3MatchEName(&pEList->a[j], zCol, zTab, zDb) ){
cnt++;
cntTab = 2;
pMatch = pItem;
@@ -101375,10 +98090,11 @@ static int lookupName(
if( 0==(cntTab++) ){
pMatch = pItem;
}
+ hCol = sqlite3StrIHash(zCol);
for(j=0, pCol=pTab->aCol; jnCol; j++, pCol++){
- if( sqlite3StrICmp(pCol->zName, zCol)==0 ){
+ if( pCol->hName==hCol && sqlite3StrICmp(pCol->zName, zCol)==0 ){
/* If there has been exactly one prior match and this match
- ** is for the right-hand table of a NATURAL JOIN or is in a
+ ** is for the right-hand table of a NATURAL JOIN or is in a
** USING clause, then skip this match.
*/
if( cnt==1 ){
@@ -101406,7 +98122,7 @@ static int lookupName(
} /* if( pSrcList ) */
#if !defined(SQLITE_OMIT_TRIGGER) || !defined(SQLITE_OMIT_UPSERT)
- /* If we have not already resolved the name, then maybe
+ /* If we have not already resolved the name, then maybe
** it is a new.* or old.* trigger argument reference. Or
** maybe it is an excluded.* from an upsert.
*/
@@ -101430,17 +98146,18 @@ static int lookupName(
Upsert *pUpsert = pNC->uNC.pUpsert;
if( pUpsert && sqlite3StrICmp("excluded",zTab)==0 ){
pTab = pUpsert->pUpsertSrc->a[0].pTab;
- pExpr->iTable = 2;
+ pExpr->iTable = EXCLUDED_TABLE_NUMBER;
}
}
#endif /* SQLITE_OMIT_UPSERT */
- if( pTab ){
+ if( pTab ){
int iCol;
+ u8 hCol = sqlite3StrIHash(zCol);
pSchema = pTab->pSchema;
cntTab++;
for(iCol=0, pCol=pTab->aCol; iColnCol; iCol++, pCol++){
- if( sqlite3StrICmp(pCol->zName, zCol)==0 ){
+ if( pCol->hName==hCol && sqlite3StrICmp(pCol->zName, zCol)==0 ){
if( iCol==pTab->iPKey ){
iCol = -1;
}
@@ -101454,14 +98171,15 @@ static int lookupName(
if( iColnCol ){
cnt++;
#ifndef SQLITE_OMIT_UPSERT
- if( pExpr->iTable==2 ){
+ if( pExpr->iTable==EXCLUDED_TABLE_NUMBER ){
testcase( iCol==(-1) );
if( IN_RENAME_OBJECT ){
pExpr->iColumn = iCol;
pExpr->y.pTab = pTab;
eNewExprOp = TK_COLUMN;
}else{
- pExpr->iTable = pNC->uNC.pUpsert->regData + iCol;
+ pExpr->iTable = pNC->uNC.pUpsert->regData +
+ sqlite3TableColumnToStorage(pTab, iCol);
eNewExprOp = TK_REGISTER;
ExprSetProperty(pExpr, EP_Alias);
}
@@ -101530,8 +98248,10 @@ static int lookupName(
pEList = pNC->uNC.pEList;
assert( pEList!=0 );
for(j=0; jnExpr; j++){
- char *zAs = pEList->a[j].zName;
- if( zAs!=0 && sqlite3StrICmp(zAs, zCol)==0 ){
+ char *zAs = pEList->a[j].zEName;
+ if( pEList->a[j].eEName==ENAME_NAME
+ && sqlite3_stricmp(zAs, zCol)==0
+ ){
Expr *pOrig;
assert( pExpr->pLeft==0 && pExpr->pRight==0 );
assert( pExpr->x.pList==0 );
@@ -101541,7 +98261,9 @@ static int lookupName(
sqlite3ErrorMsg(pParse, "misuse of aliased aggregate %s", zAs);
return WRC_Abort;
}
- if( (pNC->ncFlags&NC_AllowWin)==0 && ExprHasProperty(pOrig, EP_Win) ){
+ if( ExprHasProperty(pOrig, EP_Win)
+ && ((pNC->ncFlags&NC_AllowWin)==0 || pNC!=pTopNC )
+ ){
sqlite3ErrorMsg(pParse, "misuse of aliased window function %s",zAs);
return WRC_Abort;
}
@@ -101558,7 +98280,7 @@ static int lookupName(
}
goto lookupname_end;
}
- }
+ }
}
/* Advance to the next name context. The loop will exit when either
@@ -101633,18 +98355,20 @@ static int lookupName(
/* If a column from a table in pSrcList is referenced, then record
** this fact in the pSrcList.a[].colUsed bitmask. Column 0 causes
- ** bit 0 to be set. Column 1 sets bit 1. And so forth. If the
- ** column number is greater than the number of bits in the bitmask
- ** then set the high-order bit of the bitmask.
+ ** bit 0 to be set. Column 1 sets bit 1. And so forth. Bit 63 is
+ ** set if the 63rd or any subsequent column is used.
+ **
+ ** The colUsed mask is an optimization used to help determine if an
+ ** index is a covering index. The correct answer is still obtained
+ ** if the mask contains extra set bits. However, it is important to
+ ** avoid setting bits beyond the maximum column number of the table.
+ ** (See ticket [b92e5e8ec2cdbaa1]).
+ **
+ ** If a generated column is referenced, set bits for every column
+ ** of the table.
*/
if( pExpr->iColumn>=0 && pMatch!=0 ){
- int n = pExpr->iColumn;
- testcase( n==BMS-1 );
- if( n>=BMS ){
- n = BMS-1;
- }
- assert( pMatch->iCursor==pExpr->iTable );
- pMatch->colUsed |= ((Bitmask)1)<colUsed |= sqlite3ExprColUsed(pExpr);
}
/* Clean up and return
@@ -101683,15 +98407,23 @@ SQLITE_PRIVATE Expr *sqlite3CreateColumnExpr(sqlite3 *db, SrcList *pSrc, int iSr
Expr *p = sqlite3ExprAlloc(db, TK_COLUMN, 0, 0);
if( p ){
struct SrcList_item *pItem = &pSrc->a[iSrc];
- p->y.pTab = pItem->pTab;
+ Table *pTab = p->y.pTab = pItem->pTab;
p->iTable = pItem->iCursor;
if( p->y.pTab->iPKey==iCol ){
p->iColumn = -1;
}else{
p->iColumn = (ynVar)iCol;
- testcase( iCol==BMS );
- testcase( iCol==BMS-1 );
- pItem->colUsed |= ((Bitmask)1)<<(iCol>=BMS ? BMS-1 : iCol);
+ if( (pTab->tabFlags & TF_HasGenerated)!=0
+ && (pTab->aCol[iCol].colFlags & COLFLAG_GENERATED)!=0
+ ){
+ testcase( pTab->nCol==63 );
+ testcase( pTab->nCol==64 );
+ pItem->colUsed = pTab->nCol>=64 ? ALLBITS : MASKBIT(pTab->nCol)-1;
+ }else{
+ testcase( iCol==BMS );
+ testcase( iCol==BMS-1 );
+ pItem->colUsed |= ((Bitmask)1)<<(iCol>=BMS ? BMS-1 : iCol);
+ }
}
}
return p;
@@ -101700,26 +98432,39 @@ SQLITE_PRIVATE Expr *sqlite3CreateColumnExpr(sqlite3 *db, SrcList *pSrc, int iSr
/*
** Report an error that an expression is not valid for some set of
** pNC->ncFlags values determined by validMask.
+**
+** static void notValid(
+** Parse *pParse, // Leave error message here
+** NameContext *pNC, // The name context
+** const char *zMsg, // Type of error
+** int validMask, // Set of contexts for which prohibited
+** Expr *pExpr // Invalidate this expression on error
+** ){...}
+**
+** As an optimization, since the conditional is almost always false
+** (because errors are rare), the conditional is moved outside of the
+** function call using a macro.
*/
-static void notValid(
- Parse *pParse, /* Leave error message here */
- NameContext *pNC, /* The name context */
- const char *zMsg, /* Type of error */
- int validMask /* Set of contexts for which prohibited */
+static void notValidImpl(
+ Parse *pParse, /* Leave error message here */
+ NameContext *pNC, /* The name context */
+ const char *zMsg, /* Type of error */
+ Expr *pExpr /* Invalidate this expression on error */
){
- assert( (validMask&~(NC_IsCheck|NC_PartIdx|NC_IdxExpr|NC_GenCol))==0 );
- if( (pNC->ncFlags & validMask)!=0 ){
- const char *zIn = "partial index WHERE clauses";
- if( pNC->ncFlags & NC_IdxExpr ) zIn = "index expressions";
+ const char *zIn = "partial index WHERE clauses";
+ if( pNC->ncFlags & NC_IdxExpr ) zIn = "index expressions";
#ifndef SQLITE_OMIT_CHECK
- else if( pNC->ncFlags & NC_IsCheck ) zIn = "CHECK constraints";
+ else if( pNC->ncFlags & NC_IsCheck ) zIn = "CHECK constraints";
#endif
#ifndef SQLITE_OMIT_GENERATED_COLUMNS
- else if( pNC->ncFlags & NC_GenCol ) zIn = "generated columns";
+ else if( pNC->ncFlags & NC_GenCol ) zIn = "generated columns";
#endif
- sqlite3ErrorMsg(pParse, "%s prohibited in %s", zMsg, zIn);
- }
+ sqlite3ErrorMsg(pParse, "%s prohibited in %s", zMsg, zIn);
+ if( pExpr ) pExpr->op = TK_NULL;
}
+#define sqlite3ResolveNotValid(P,N,M,X,E) \
+ assert( ((X)&~(NC_IsCheck|NC_PartIdx|NC_IdxExpr|NC_GenCol))==0 ); \
+ if( ((N)->ncFlags & (X))!=0 ) notValidImpl(P,N,M,E);
/*
** Expression p should encode a floating point value between 1.0 and 0.0.
@@ -101766,33 +98511,30 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
#endif
switch( pExpr->op ){
-#if defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) && !defined(SQLITE_OMIT_SUBQUERY)
/* The special operator TK_ROW means use the rowid for the first
** column in the FROM clause. This is used by the LIMIT and ORDER BY
- ** clause processing on UPDATE and DELETE statements.
+ ** clause processing on UPDATE and DELETE statements, and by
+ ** UPDATE ... FROM statement processing.
*/
case TK_ROW: {
SrcList *pSrcList = pNC->pSrcList;
struct SrcList_item *pItem;
- assert( pSrcList && pSrcList->nSrc==1 );
+ assert( pSrcList && pSrcList->nSrc>=1 );
pItem = pSrcList->a;
- assert( HasRowid(pItem->pTab) && pItem->pTab->pSelect==0 );
pExpr->op = TK_COLUMN;
pExpr->y.pTab = pItem->pTab;
pExpr->iTable = pItem->iCursor;
- pExpr->iColumn = -1;
+ pExpr->iColumn--;
pExpr->affExpr = SQLITE_AFF_INTEGER;
break;
}
-#endif /* defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT)
- && !defined(SQLITE_OMIT_SUBQUERY) */
/* A column name: ID
** Or table name and column name: ID.ID
** Or a database, table and column: ID.ID.ID
**
** The TK_ID and TK_OUT cases are combined so that there will only
- ** be one call to lookupName(). Then the compiler will in-line
+ ** be one call to lookupName(). Then the compiler will in-line
** lookupName() for a size reduction and performance increase.
*/
case TK_ID:
@@ -101808,7 +98550,10 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
zColumn = pExpr->u.zToken;
}else{
Expr *pLeft = pExpr->pLeft;
- notValid(pParse, pNC, "the \".\" operator", NC_IdxExpr|NC_GenCol);
+ testcase( pNC->ncFlags & NC_IdxExpr );
+ testcase( pNC->ncFlags & NC_GenCol );
+ sqlite3ResolveNotValid(pParse, pNC, "the \".\" operator",
+ NC_IdxExpr|NC_GenCol, 0);
pRight = pExpr->pRight;
if( pRight->op==TK_ID ){
zDb = 0;
@@ -101878,7 +98623,7 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
** to likelihood(X,0.9375). */
/* TUNING: unlikely() probability is 0.0625. likely() is 0.9375 */
pExpr->iTable = pDef->zName[0]=='u' ? 8388608 : 125829120;
- }
+ }
}
#ifndef SQLITE_OMIT_AUTHORIZATION
{
@@ -101902,31 +98647,34 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
ExprSetProperty(pExpr,EP_ConstFunc);
}
if( (pDef->funcFlags & SQLITE_FUNC_CONSTANT)==0 ){
- /* Date/time functions that use 'now', and other functions like
+ /* Clearly non-deterministic functions like random(), but also
+ ** date/time functions that use 'now', and other functions like
** sqlite_version() that might change over time cannot be used
- ** in an index. */
- notValid(pParse, pNC, "non-deterministic functions", NC_SelfRef);
+ ** in an index or generated column. Curiously, they can be used
+ ** in a CHECK constraint. SQLServer, MySQL, and PostgreSQL all
+ ** all this. */
+ sqlite3ResolveNotValid(pParse, pNC, "non-deterministic functions",
+ NC_IdxExpr|NC_PartIdx|NC_GenCol, 0);
}else{
assert( (NC_SelfRef & 0xff)==NC_SelfRef ); /* Must fit in 8 bits */
pExpr->op2 = pNC->ncFlags & NC_SelfRef;
+ if( pNC->ncFlags & NC_FromDDL ) ExprSetProperty(pExpr, EP_FromDDL);
}
if( (pDef->funcFlags & SQLITE_FUNC_INTERNAL)!=0
&& pParse->nested==0
- && sqlite3Config.bInternalFunctions==0
+ && (pParse->db->mDbFlags & DBFLAG_InternalFunc)==0
){
/* Internal-use-only functions are disallowed unless the
- ** SQL is being compiled using sqlite3NestedParse() */
+ ** SQL is being compiled using sqlite3NestedParse() or
+ ** the SQLITE_TESTCTRL_INTERNAL_FUNCTIONS test-control has be
+ ** used to activate internal functionsn for testing purposes */
no_such_func = 1;
pDef = 0;
}else
- if( (pDef->funcFlags & SQLITE_FUNC_DIRECT)!=0
- && ExprHasProperty(pExpr, EP_Indirect)
+ if( (pDef->funcFlags & (SQLITE_FUNC_DIRECT|SQLITE_FUNC_UNSAFE))!=0
&& !IN_RENAME_OBJECT
){
- /* Functions tagged with SQLITE_DIRECTONLY may not be used
- ** inside of triggers and views */
- sqlite3ErrorMsg(pParse, "%s() prohibited in triggers and views",
- pDef->zName);
+ sqlite3ExprFunctionUsable(pParse, pExpr, pDef);
}
}
@@ -101937,11 +98685,11 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
|| (pDef->xValue && pDef->xInverse && pDef->xSFunc && pDef->xFinalize)
);
if( pDef && pDef->xValue==0 && pWin ){
- sqlite3ErrorMsg(pParse,
+ sqlite3ErrorMsg(pParse,
"%.*s() may not be used as a window function", nId, zId
);
pNC->nErr++;
- }else if(
+ }else if(
(is_agg && (pNC->ncFlags & NC_AllowAgg)==0)
|| (is_agg && (pDef->funcFlags&SQLITE_FUNC_WINDOW) && !pWin)
|| (is_agg && pWin && (pNC->ncFlags & NC_AllowWin)==0)
@@ -101977,8 +98725,8 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
}
#ifndef SQLITE_OMIT_WINDOWFUNC
else if( is_agg==0 && ExprHasProperty(pExpr, EP_WinFunc) ){
- sqlite3ErrorMsg(pParse,
- "FILTER may not be used with non-aggregate %.*s()",
+ sqlite3ErrorMsg(pParse,
+ "FILTER may not be used with non-aggregate %.*s()",
nId, zId
);
pNC->nErr++;
@@ -102007,7 +98755,7 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
Select *pSel = pNC->pWinSelect;
assert( pWin==pExpr->y.pWin );
if( IN_RENAME_OBJECT==0 ){
- sqlite3WindowUpdate(pParse, pSel->pWinDefn, pWin, pDef);
+ sqlite3WindowUpdate(pParse, pSel ? pSel->pWinDefn : 0, pWin, pDef);
}
sqlite3WalkExprList(pWalker, pWin->pPartition);
sqlite3WalkExprList(pWalker, pWin->pOrderBy);
@@ -102040,7 +98788,7 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
pNC->ncFlags |= savedAllowFlags;
}
/* FIX ME: Compute pExpr->affinity based on the expected return
- ** type of the function
+ ** type of the function
*/
return WRC_Prune;
}
@@ -102052,8 +98800,12 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
testcase( pExpr->op==TK_IN );
if( ExprHasProperty(pExpr, EP_xIsSelect) ){
int nRef = pNC->nRef;
- notValid(pParse, pNC, "subqueries",
- NC_IsCheck|NC_PartIdx|NC_IdxExpr|NC_GenCol);
+ testcase( pNC->ncFlags & NC_IsCheck );
+ testcase( pNC->ncFlags & NC_PartIdx );
+ testcase( pNC->ncFlags & NC_IdxExpr );
+ testcase( pNC->ncFlags & NC_GenCol );
+ sqlite3ResolveNotValid(pParse, pNC, "subqueries",
+ NC_IsCheck|NC_PartIdx|NC_IdxExpr|NC_GenCol, pExpr);
sqlite3WalkSelect(pWalker, pExpr->x.pSelect);
assert( pNC->nRef>=nRef );
if( nRef!=pNC->nRef ){
@@ -102064,8 +98816,12 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
break;
}
case TK_VARIABLE: {
- notValid(pParse, pNC, "parameters",
- NC_IsCheck|NC_PartIdx|NC_IdxExpr|NC_GenCol);
+ testcase( pNC->ncFlags & NC_IsCheck );
+ testcase( pNC->ncFlags & NC_PartIdx );
+ testcase( pNC->ncFlags & NC_IdxExpr );
+ testcase( pNC->ncFlags & NC_GenCol );
+ sqlite3ResolveNotValid(pParse, pNC, "parameters",
+ NC_IsCheck|NC_PartIdx|NC_IdxExpr|NC_GenCol, pExpr);
break;
}
case TK_IS:
@@ -102074,7 +98830,7 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
assert( !ExprHasProperty(pExpr, EP_Reduced) );
/* Handle special cases of "x IS TRUE", "x IS FALSE", "x IS NOT TRUE",
** and "x IS NOT FALSE". */
- if( pRight->op==TK_ID ){
+ if( pRight && pRight->op==TK_ID ){
int rc = resolveExprStep(pWalker, pRight);
if( rc==WRC_Abort ) return WRC_Abort;
if( pRight->op==TK_TRUEFALSE ){
@@ -102083,7 +98839,7 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
return WRC_Continue;
}
}
- /* Fall thru */
+ /* no break */ deliberate_fall_through
}
case TK_BETWEEN:
case TK_EQ:
@@ -102117,7 +98873,7 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
testcase( pExpr->op==TK_BETWEEN );
sqlite3ErrorMsg(pParse, "row value misused");
}
- break;
+ break;
}
}
return (pParse->nErr || pParse->db->mallocFailed) ? WRC_Abort : WRC_Continue;
@@ -102147,8 +98903,9 @@ static int resolveAsName(
if( pE->op==TK_ID ){
char *zCol = pE->u.zToken;
for(i=0; inExpr; i++){
- char *zAs = pEList->a[i].zName;
- if( zAs!=0 && sqlite3StrICmp(zAs, zCol)==0 ){
+ if( pEList->a[i].eEName==ENAME_NAME
+ && sqlite3_stricmp(pEList->a[i].zEName, zCol)==0
+ ){
return i+1;
}
}
@@ -102199,7 +98956,7 @@ static int resolveOrderByTermToExprList(
nc.nErr = 0;
db = pParse->db;
savedSuppErr = db->suppressErr;
- db->suppressErr = 1;
+ if( IN_RENAME_OBJECT==0 ) db->suppressErr = 1;
rc = sqlite3ResolveExprNames(&nc, pE);
db->suppressErr = savedSuppErr;
if( rc ) return 0;
@@ -102227,7 +98984,7 @@ static void resolveOutOfRangeError(
int i, /* The index (1-based) of the term out of range */
int mx /* Largest permissible value of i */
){
- sqlite3ErrorMsg(pParse,
+ sqlite3ErrorMsg(pParse,
"%r %s BY term out of range - should be "
"between 1 and %d", i, zType, mx);
}
@@ -102291,7 +99048,7 @@ static int resolveCompoundOrderBy(
iCol = resolveAsName(pParse, pEList, pE);
if( iCol==0 ){
/* Now test if expression pE matches one of the values returned
- ** by pSelect. In the usual case this is done by duplicating the
+ ** by pSelect. In the usual case this is done by duplicating the
** expression, resolving any symbols in it, and then comparing
** it against each expression returned by the SELECT statement.
** Once the comparisons are finished, the duplicate expression
@@ -102515,7 +99272,7 @@ static int resolveSelectStep(Walker *pWalker, Select *p){
ExprList *pGroupBy; /* The GROUP BY clause */
Select *pLeftmost; /* Left-most of SELECT of a compound */
sqlite3 *db; /* Database connection */
-
+
assert( p!=0 );
if( p->selFlags & SF_Resolved ){
@@ -102569,7 +99326,7 @@ static int resolveSelectStep(Walker *pWalker, Select *p){
pSub->pOrderBy = p->pOrderBy;
p->pOrderBy = 0;
}
-
+
/* Recursively resolve names in all subqueries
*/
for(i=0; ipSrc->nSrc; i++){
@@ -102596,19 +99353,19 @@ static int resolveSelectStep(Walker *pWalker, Select *p){
pItem->fg.isCorrelated = (nRef!=0);
}
}
-
+
/* Set up the local name-context to pass to sqlite3ResolveExprNames() to
** resolve the result-set expression list.
*/
sNC.ncFlags = NC_AllowAgg|NC_AllowWin;
sNC.pSrcList = p->pSrc;
sNC.pNext = pOuterNC;
-
+
/* Resolve names in the result set. */
if( sqlite3ResolveExprListNames(&sNC, p->pEList) ) return WRC_Abort;
sNC.ncFlags &= ~NC_AllowWin;
-
- /* If there are no aggregate functions in the result-set, and no GROUP BY
+
+ /* If there are no aggregate functions in the result-set, and no GROUP BY
** expression, do not allow aggregates in any of the other expressions.
*/
assert( (p->selFlags & SF_Aggregate)==0 );
@@ -102619,14 +99376,14 @@ static int resolveSelectStep(Walker *pWalker, Select *p){
}else{
sNC.ncFlags &= ~NC_AllowAgg;
}
-
+
/* If a HAVING clause is present, then there must be a GROUP BY clause.
*/
if( p->pHaving && !pGroupBy ){
sqlite3ErrorMsg(pParse, "a GROUP BY clause is required before HAVING");
return WRC_Abort;
}
-
+
/* Add the output column list to the name-context before parsing the
** other expressions in the SELECT statement. This is so that
** expressions in the WHERE clause (etc.) can refer to expressions by
@@ -102645,19 +99402,19 @@ static int resolveSelectStep(Walker *pWalker, Select *p){
for(i=0; ipSrc->nSrc; i++){
struct SrcList_item *pItem = &p->pSrc->a[i];
if( pItem->fg.isTabFunc
- && sqlite3ResolveExprListNames(&sNC, pItem->u1.pFuncArg)
+ && sqlite3ResolveExprListNames(&sNC, pItem->u1.pFuncArg)
){
return WRC_Abort;
}
}
/* The ORDER BY and GROUP BY clauses may not refer to terms in
- ** outer queries
+ ** outer queries
*/
sNC.pNext = 0;
sNC.ncFlags |= NC_AllowAgg|NC_AllowWin;
- /* If this is a converted compound query, move the ORDER BY clause from
+ /* If this is a converted compound query, move the ORDER BY clause from
** the sub-query back to the parent query. At this point each term
** within the ORDER BY clause has been transformed to an integer value.
** These integers will be replaced by copies of the corresponding result
@@ -102687,13 +99444,13 @@ static int resolveSelectStep(Walker *pWalker, Select *p){
return WRC_Abort;
}
sNC.ncFlags &= ~NC_AllowWin;
-
- /* Resolve the GROUP BY clause. At the same time, make sure
+
+ /* Resolve the GROUP BY clause. At the same time, make sure
** the GROUP BY clause does not contain aggregate functions.
*/
if( pGroupBy ){
struct ExprList_item *pItem;
-
+
if( resolveOrderGroupBy(&sNC, p, pGroupBy, "GROUP") || db->mallocFailed ){
return WRC_Abort;
}
@@ -102748,7 +99505,7 @@ static int resolveSelectStep(Walker *pWalker, Select *p){
** checking on function usage and set a flag if any aggregate functions
** are seen.
**
-** To resolve table columns references we look for nodes (or subtrees) of the
+** To resolve table columns references we look for nodes (or subtrees) of the
** form X.Y.Z or Y.Z or just Z where
**
** X: The name of a database. Ex: "main" or "temp" or
@@ -102780,7 +99537,7 @@ static int resolveSelectStep(Walker *pWalker, Select *p){
**
** SELECT a+b AS x, c+d AS y FROM t1 ORDER BY a+b;
**
-** Function calls are checked to make sure that the function is
+** Function calls are checked to make sure that the function is
** defined and that the correct number of arguments are specified.
** If the function is an aggregate function, then the NC_HasAgg flag is
** set and the opcode is changed from TK_FUNCTION to TK_AGG_FUNCTION.
@@ -102790,7 +99547,7 @@ static int resolveSelectStep(Walker *pWalker, Select *p){
** An error message is left in pParse if anything is amiss. The number
** if errors is returned.
*/
-SQLITE_PRIVATE int sqlite3ResolveExprNames(
+SQLITE_PRIVATE int sqlite3ResolveExprNames(
NameContext *pNC, /* Namespace to resolve expressions in. */
Expr *pExpr /* The expression to be analyzed. */
){
@@ -102829,16 +99586,46 @@ SQLITE_PRIVATE int sqlite3ResolveExprNames(
** just like sqlite3ResolveExprNames() except that it works for an expression
** list rather than a single expression.
*/
-SQLITE_PRIVATE int sqlite3ResolveExprListNames(
+SQLITE_PRIVATE int sqlite3ResolveExprListNames(
NameContext *pNC, /* Namespace to resolve expressions in. */
ExprList *pList /* The expression list to be analyzed. */
){
int i;
- if( pList ){
- for(i=0; inExpr; i++){
- if( sqlite3ResolveExprNames(pNC, pList->a[i].pExpr) ) return WRC_Abort;
+ int savedHasAgg = 0;
+ Walker w;
+ if( pList==0 ) return WRC_Continue;
+ w.pParse = pNC->pParse;
+ w.xExprCallback = resolveExprStep;
+ w.xSelectCallback = resolveSelectStep;
+ w.xSelectCallback2 = 0;
+ w.u.pNC = pNC;
+ savedHasAgg = pNC->ncFlags & (NC_HasAgg|NC_MinMaxAgg|NC_HasWin);
+ pNC->ncFlags &= ~(NC_HasAgg|NC_MinMaxAgg|NC_HasWin);
+ for(i=0; inExpr; i++){
+ Expr *pExpr = pList->a[i].pExpr;
+ if( pExpr==0 ) continue;
+#if SQLITE_MAX_EXPR_DEPTH>0
+ w.pParse->nHeight += pExpr->nHeight;
+ if( sqlite3ExprCheckHeight(w.pParse, w.pParse->nHeight) ){
+ return WRC_Abort;
}
+#endif
+ sqlite3WalkExpr(&w, pExpr);
+#if SQLITE_MAX_EXPR_DEPTH>0
+ w.pParse->nHeight -= pExpr->nHeight;
+#endif
+ assert( EP_Agg==NC_HasAgg );
+ assert( EP_Win==NC_HasWin );
+ testcase( pNC->ncFlags & NC_HasAgg );
+ testcase( pNC->ncFlags & NC_HasWin );
+ if( pNC->ncFlags & (NC_HasAgg|NC_MinMaxAgg|NC_HasWin) ){
+ ExprSetProperty(pExpr, pNC->ncFlags & (NC_HasAgg|NC_HasWin) );
+ savedHasAgg |= pNC->ncFlags & (NC_HasAgg|NC_MinMaxAgg|NC_HasWin);
+ pNC->ncFlags &= ~(NC_HasAgg|NC_MinMaxAgg|NC_HasWin);
+ }
+ if( pNC->nErr>0 || w.pParse->nErr>0 ) return WRC_Abort;
}
+ pNC->ncFlags |= savedHasAgg;
return WRC_Continue;
}
@@ -102909,6 +99696,11 @@ SQLITE_PRIVATE int sqlite3ResolveSelfReference(
sSrc.a[0].zName = pTab->zName;
sSrc.a[0].pTab = pTab;
sSrc.a[0].iCursor = -1;
+ if( pTab->pSchema!=pParse->db->aDb[1].pSchema ){
+ /* Cause EP_FromDDL to be set on TK_FUNCTION nodes of non-TEMP
+ ** schema elements */
+ type |= NC_FromDDL;
+ }
}
sNC.pParse = pParse;
sNC.pSrcList = &sSrc;
@@ -102952,7 +99744,7 @@ SQLITE_PRIVATE char sqlite3TableColumnAffinity(Table *pTab, int iCol){
** Return the 'affinity' of the expression pExpr if any.
**
** If pExpr is a column, a reference to a column via an 'AS' alias,
-** or a sub-select with a column as the return value, then the
+** or a sub-select with a column as the return value, then the
** affinity of that column is returned. Otherwise, 0x00 is returned,
** indicating no affinity for the expression.
**
@@ -102964,16 +99756,19 @@ SQLITE_PRIVATE char sqlite3TableColumnAffinity(Table *pTab, int iCol){
** SELECT a AS b FROM t1 WHERE b;
** SELECT * FROM t1 WHERE (select a from t1);
*/
-SQLITE_PRIVATE char sqlite3ExprAffinity(Expr *pExpr){
+SQLITE_PRIVATE char sqlite3ExprAffinity(const Expr *pExpr){
int op;
while( ExprHasProperty(pExpr, EP_Skip) ){
- assert( pExpr->op==TK_COLLATE );
+ assert( pExpr->op==TK_COLLATE || pExpr->op==TK_IF_NULL_ROW );
pExpr = pExpr->pLeft;
assert( pExpr!=0 );
}
op = pExpr->op;
if( op==TK_SELECT ){
assert( pExpr->flags&EP_xIsSelect );
+ assert( pExpr->x.pSelect!=0 );
+ assert( pExpr->x.pSelect->pEList!=0 );
+ assert( pExpr->x.pSelect->pEList->a[0].pExpr!=0 );
return sqlite3ExprAffinity(pExpr->x.pSelect->pEList->a[0].pExpr);
}
if( op==TK_REGISTER ) op = pExpr->op2;
@@ -103034,9 +99829,9 @@ SQLITE_PRIVATE Expr *sqlite3ExprAddCollateString(Parse *pParse, Expr *pExpr, con
*/
SQLITE_PRIVATE Expr *sqlite3ExprSkipCollate(Expr *pExpr){
while( pExpr && ExprHasProperty(pExpr, EP_Skip) ){
- assert( pExpr->op==TK_COLLATE );
+ assert( pExpr->op==TK_COLLATE || pExpr->op==TK_IF_NULL_ROW );
pExpr = pExpr->pLeft;
- }
+ }
return pExpr;
}
@@ -103053,10 +99848,10 @@ SQLITE_PRIVATE Expr *sqlite3ExprSkipCollateAndLikely(Expr *pExpr){
assert( pExpr->op==TK_FUNCTION );
pExpr = pExpr->x.pList->a[0].pExpr;
}else{
- assert( pExpr->op==TK_COLLATE );
+ assert( pExpr->op==TK_COLLATE || pExpr->op==TK_IF_NULL_ROW );
pExpr = pExpr->pLeft;
}
- }
+ }
return pExpr;
}
@@ -103074,10 +99869,10 @@ SQLITE_PRIVATE Expr *sqlite3ExprSkipCollateAndLikely(Expr *pExpr){
** COLLATE operators take first precedence. Left operands take
** precedence over right operands.
*/
-SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){
+SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, const Expr *pExpr){
sqlite3 *db = pParse->db;
CollSeq *pColl = 0;
- Expr *p = pExpr;
+ const Expr *p = pExpr;
while( p ){
int op = p->op;
if( op==TK_REGISTER ) op = p->op2;
@@ -103112,12 +99907,12 @@ SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){
Expr *pNext = p->pRight;
/* The Expr.x union is never used at the same time as Expr.pRight */
assert( p->x.pList==0 || p->pRight==0 );
- if( p->x.pList!=0
+ if( p->x.pList!=0
&& !db->mallocFailed
&& ALWAYS(!ExprHasProperty(p, EP_xIsSelect))
){
int i;
- for(i=0; ix.pList->nExpr; i++){
+ for(i=0; ALWAYS(ix.pList->nExpr); i++){
if( ExprHasProperty(p->x.pList->a[i].pExpr, EP_Collate) ){
pNext = p->x.pList->a[i].pExpr;
break;
@@ -103130,7 +99925,7 @@ SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){
break;
}
}
- if( sqlite3CheckCollSeq(pParse, pColl) ){
+ if( sqlite3CheckCollSeq(pParse, pColl) ){
pColl = 0;
}
return pColl;
@@ -103146,7 +99941,7 @@ SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){
** The sqlite3ExprCollSeq() routine works the same except that it
** returns NULL if there is no defined collation.
*/
-SQLITE_PRIVATE CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr){
+SQLITE_PRIVATE CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, const Expr *pExpr){
CollSeq *p = sqlite3ExprCollSeq(pParse, pExpr);
if( p==0 ) p = pParse->db->pDfltColl;
assert( p!=0 );
@@ -103156,7 +99951,7 @@ SQLITE_PRIVATE CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr){
/*
** Return TRUE if the two expressions have equivalent collating sequences.
*/
-SQLITE_PRIVATE int sqlite3ExprCollSeqMatch(Parse *pParse, Expr *pE1, Expr *pE2){
+SQLITE_PRIVATE int sqlite3ExprCollSeqMatch(Parse *pParse, const Expr *pE1, const Expr *pE2){
CollSeq *pColl1 = sqlite3ExprNNCollSeq(pParse, pE1);
CollSeq *pColl2 = sqlite3ExprNNCollSeq(pParse, pE2);
return sqlite3StrICmp(pColl1->zName, pColl2->zName)==0;
@@ -103167,7 +99962,7 @@ SQLITE_PRIVATE int sqlite3ExprCollSeqMatch(Parse *pParse, Expr *pE1, Expr *pE2){
** type affinity of the other operand. This routine returns the
** type affinity that should be used for the comparison operator.
*/
-SQLITE_PRIVATE char sqlite3CompareAffinity(Expr *pExpr, char aff2){
+SQLITE_PRIVATE char sqlite3CompareAffinity(const Expr *pExpr, char aff2){
char aff1 = sqlite3ExprAffinity(pExpr);
if( aff1>SQLITE_AFF_NONE && aff2>SQLITE_AFF_NONE ){
/* Both sides of the comparison are columns. If one has numeric
@@ -103189,7 +99984,7 @@ SQLITE_PRIVATE char sqlite3CompareAffinity(Expr *pExpr, char aff2){
** pExpr is a comparison operator. Return the type affinity that should
** be applied to both operands prior to doing the comparison.
*/
-static char comparisonAffinity(Expr *pExpr){
+static char comparisonAffinity(const Expr *pExpr){
char aff;
assert( pExpr->op==TK_EQ || pExpr->op==TK_IN || pExpr->op==TK_LT ||
pExpr->op==TK_GT || pExpr->op==TK_GE || pExpr->op==TK_LE ||
@@ -103212,7 +100007,7 @@ static char comparisonAffinity(Expr *pExpr){
** if the index with affinity idx_affinity may be used to implement
** the comparison in pExpr.
*/
-SQLITE_PRIVATE int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity){
+SQLITE_PRIVATE int sqlite3IndexAffinityOk(const Expr *pExpr, char idx_affinity){
char aff = comparisonAffinity(pExpr);
if( affpRight, p->pLeft);
}else{
@@ -103298,6 +100097,7 @@ static int codeCompare(
int addr;
CollSeq *p4;
+ if( pParse->nErr ) return 0;
if( isCommuted ){
p4 = sqlite3BinaryCompareCollSeq(pParse, pRight, pLeft);
}else{
@@ -103324,7 +100124,7 @@ SQLITE_PRIVATE int sqlite3ExprIsVector(Expr *pExpr){
}
/*
-** If the expression passed as the only argument is of type TK_VECTOR
+** If the expression passed as the only argument is of type TK_VECTOR
** return the number of expressions in the vector. Or, if the expression
** is a sub-select, return the number of columns in the sub-select. For
** any other type of expression, return 1.
@@ -103374,7 +100174,7 @@ SQLITE_PRIVATE Expr *sqlite3VectorFieldSubexpr(Expr *pVector, int i){
** sqlite3ExprCode() will generate all necessary code to compute
** the iField-th column of the vector expression pVector.
**
-** It is ok for pVector to be a scalar (as long as iField==0).
+** It is ok for pVector to be a scalar (as long as iField==0).
** In that case, this routine works like sqlite3ExprDup().
**
** The caller owns the returned Expr object and is responsible for
@@ -103430,7 +100230,7 @@ SQLITE_PRIVATE Expr *sqlite3ExprForVectorField(
/*
** If expression pExpr is of type TK_SELECT, generate code to evaluate
-** it. Return the register in which the result is stored (or, if the
+** it. Return the register in which the result is stored (or, if the
** sub-select returns more than one column, the first in an array
** of registers in which the result is stored).
**
@@ -103452,10 +100252,10 @@ static int exprCodeSubselect(Parse *pParse, Expr *pExpr){
** the register number of a register that contains the value of
** element iField of the vector.
**
-** If pVector is a TK_SELECT expression, then code for it must have
+** If pVector is a TK_SELECT expression, then code for it must have
** already been generated using the exprCodeSubselect() routine. In this
** case parameter regSelect should be the first in an array of registers
-** containing the results of the sub-select.
+** containing the results of the sub-select.
**
** If pVector is of type TK_VECTOR, then code for the requested field
** is generated. In this case (*pRegFree) may be set to the number of
@@ -103515,14 +100315,16 @@ static void codeVectorCompare(
int addrDone = sqlite3VdbeMakeLabel(pParse);
int isCommuted = ExprHasProperty(pExpr,EP_Commuted);
+ assert( !ExprHasVVAProperty(pExpr,EP_Immutable) );
+ if( pParse->nErr ) return;
if( nLeft!=sqlite3ExprVectorSize(pRight) ){
sqlite3ErrorMsg(pParse, "row value misused");
return;
}
- assert( pExpr->op==TK_EQ || pExpr->op==TK_NE
- || pExpr->op==TK_IS || pExpr->op==TK_ISNOT
- || pExpr->op==TK_LT || pExpr->op==TK_GT
- || pExpr->op==TK_LE || pExpr->op==TK_GE
+ assert( pExpr->op==TK_EQ || pExpr->op==TK_NE
+ || pExpr->op==TK_IS || pExpr->op==TK_ISNOT
+ || pExpr->op==TK_LT || pExpr->op==TK_GT
+ || pExpr->op==TK_LE || pExpr->op==TK_GE
);
assert( pExpr->op==op || (pExpr->op==TK_IS && op==TK_EQ)
|| (pExpr->op==TK_ISNOT && op==TK_NE) );
@@ -103538,7 +100340,7 @@ static void codeVectorCompare(
for(i=0; 1 /*Loop exits by "break"*/; i++){
int regFree1 = 0, regFree2 = 0;
- Expr *pL, *pR;
+ Expr *pL, *pR;
int r1, r2;
assert( i>=0 && idb->aLimit[SQLITE_LIMIT_EXPR_DEPTH];
if( nHeight>mxHeight ){
- sqlite3ErrorMsg(pParse,
+ sqlite3ErrorMsg(pParse,
"Expression tree is too large (maximum depth %d)", mxHeight
);
rc = SQLITE_ERROR;
@@ -103629,10 +100431,10 @@ static void heightOfSelect(Select *pSelect, int *pnHeight){
}
/*
-** Set the Expr.nHeight variable in the structure passed as an
-** argument. An expression with no children, Expr.pList or
+** Set the Expr.nHeight variable in the structure passed as an
+** argument. An expression with no children, Expr.pList or
** Expr.pSelect member has a height of 1. Any other expression
-** has a height equal to the maximum height of any other
+** has a height equal to the maximum height of any other
** referenced Expr plus one.
**
** Also propagate EP_Propagate flags up from Expr.x.pList to Expr.flags,
@@ -103657,7 +100459,7 @@ static void exprSetHeight(Expr *p){
** leave an error in pParse.
**
** Also propagate all EP_Propagate flags from the Expr.x.pList into
-** Expr.flags.
+** Expr.flags.
*/
SQLITE_PRIVATE void sqlite3ExprSetHeightAndFlags(Parse *pParse, Expr *p){
if( pParse->nErr ) return;
@@ -103677,7 +100479,7 @@ SQLITE_PRIVATE int sqlite3SelectExprHeight(Select *p){
#else /* ABOVE: Height enforcement enabled. BELOW: Height enforcement off */
/*
** Propagate all EP_Propagate flags from the Expr.x.pList into
-** Expr.flags.
+** Expr.flags.
*/
SQLITE_PRIVATE void sqlite3ExprSetHeightAndFlags(Parse *pParse, Expr *p){
if( p && p->x.pList && !ExprHasProperty(p, EP_xIsSelect) ){
@@ -103746,7 +100548,7 @@ SQLITE_PRIVATE Expr *sqlite3ExprAlloc(
}
#if SQLITE_MAX_EXPR_DEPTH>0
pNew->nHeight = 1;
-#endif
+#endif
}
return pNew;
}
@@ -103853,9 +100655,11 @@ SQLITE_PRIVATE Expr *sqlite3ExprAnd(Parse *pParse, Expr *pLeft, Expr *pRight){
return pRight;
}else if( pRight==0 ){
return pLeft;
- }else if( ExprAlwaysFalse(pLeft) || ExprAlwaysFalse(pRight) ){
- sqlite3ExprUnmapAndDelete(pParse, pLeft);
- sqlite3ExprUnmapAndDelete(pParse, pRight);
+ }else if( (ExprAlwaysFalse(pLeft) || ExprAlwaysFalse(pRight))
+ && !IN_RENAME_OBJECT
+ ){
+ sqlite3ExprDelete(db, pLeft);
+ sqlite3ExprDelete(db, pRight);
return sqlite3Expr(db, TK_INTEGER, "0");
}else{
return sqlite3PExpr(pParse, TK_AND, pLeft, pRight);
@@ -103891,9 +100695,43 @@ SQLITE_PRIVATE Expr *sqlite3ExprFunction(
return pNew;
}
+/*
+** Check to see if a function is usable according to current access
+** rules:
+**
+** SQLITE_FUNC_DIRECT - Only usable from top-level SQL
+**
+** SQLITE_FUNC_UNSAFE - Usable if TRUSTED_SCHEMA or from
+** top-level SQL
+**
+** If the function is not usable, create an error.
+*/
+SQLITE_PRIVATE void sqlite3ExprFunctionUsable(
+ Parse *pParse, /* Parsing and code generating context */
+ Expr *pExpr, /* The function invocation */
+ FuncDef *pDef /* The function being invoked */
+){
+ assert( !IN_RENAME_OBJECT );
+ assert( (pDef->funcFlags & (SQLITE_FUNC_DIRECT|SQLITE_FUNC_UNSAFE))!=0 );
+ if( ExprHasProperty(pExpr, EP_FromDDL) ){
+ if( (pDef->funcFlags & SQLITE_FUNC_DIRECT)!=0
+ || (pParse->db->flags & SQLITE_TrustedSchema)==0
+ ){
+ /* Functions prohibited in triggers and views if:
+ ** (1) tagged with SQLITE_DIRECTONLY
+ ** (2) not tagged with SQLITE_INNOCUOUS (which means it
+ ** is tagged with SQLITE_FUNC_UNSAFE) and
+ ** SQLITE_DBCONFIG_TRUSTED_SCHEMA is off (meaning
+ ** that the schema is possibly tainted).
+ */
+ sqlite3ErrorMsg(pParse, "unsafe use of %s()", pDef->zName);
+ }
+ }
+}
+
/*
** Assign a variable number to an expression that encodes a wildcard
-** in the original SQL statement.
+** in the original SQL statement.
**
** Wildcards consisting of a single "?" are assigned the next sequential
** variable number.
@@ -104031,7 +100869,7 @@ SQLITE_PRIVATE void sqlite3ExprUnmapAndDelete(Parse *pParse, Expr *p){
}
/*
-** Return the number of bytes allocated for the expression structure
+** Return the number of bytes allocated for the expression structure
** passed as the first argument. This is always one of EXPR_FULLSIZE,
** EXPR_REDUCEDSIZE or EXPR_TOKENONLYSIZE.
*/
@@ -104046,14 +100884,14 @@ static int exprStructSize(Expr *p){
** to store a copy of an expression or expression tree. They differ in
** how much of the tree is measured.
**
-** dupedExprStructSize() Size of only the Expr structure
+** dupedExprStructSize() Size of only the Expr structure
** dupedExprNodeSize() Size of Expr + space for token
** dupedExprSize() Expr + token + subtree components
**
***************************************************************************
**
-** The dupedExprStructSize() function returns two values OR-ed together:
-** (1) the space required for a copy of the Expr structure only and
+** The dupedExprStructSize() function returns two values OR-ed together:
+** (1) the space required for a copy of the Expr structure only and
** (2) the EP_xxx flags that indicate what the structure size should be.
** The return values is always one of:
**
@@ -104080,7 +100918,7 @@ static int dupedExprStructSize(Expr *p, int flags){
assert( flags==EXPRDUP_REDUCE || flags==0 ); /* Only one flag value allowed */
assert( EXPR_FULLSIZE<=0xfff );
assert( (0xfff & (EP_Reduced|EP_TokenOnly))==0 );
- if( 0==flags || p->op==TK_SELECT_COLUMN
+ if( 0==flags || p->op==TK_SELECT_COLUMN
#ifndef SQLITE_OMIT_WINDOWFUNC
|| ExprHasProperty(p, EP_WinFunc)
#endif
@@ -104088,9 +100926,9 @@ static int dupedExprStructSize(Expr *p, int flags){
nSize = EXPR_FULLSIZE;
}else{
assert( !ExprHasProperty(p, EP_TokenOnly|EP_Reduced) );
- assert( !ExprHasProperty(p, EP_FromJoin) );
+ assert( !ExprHasProperty(p, EP_FromJoin) );
assert( !ExprHasProperty(p, EP_MemToken) );
- assert( !ExprHasProperty(p, EP_NoReduce) );
+ assert( !ExprHasVVAProperty(p, EP_NoReduce) );
if( p->pLeft || p->x.pList ){
nSize = EXPR_REDUCEDSIZE | EP_Reduced;
}else{
@@ -104102,7 +100940,7 @@ static int dupedExprStructSize(Expr *p, int flags){
}
/*
-** This function returns the space in bytes required to store the copy
+** This function returns the space in bytes required to store the copy
** of the Expr structure and a copy of the Expr.u.zToken string (if that
** string is defined.)
*/
@@ -104115,16 +100953,16 @@ static int dupedExprNodeSize(Expr *p, int flags){
}
/*
-** Return the number of bytes required to create a duplicate of the
+** Return the number of bytes required to create a duplicate of the
** expression passed as the first argument. The second argument is a
** mask containing EXPRDUP_XXX flags.
**
** The value returned includes space to create a copy of the Expr struct
** itself and the buffer referred to by Expr.u.zToken, if any.
**
-** If the EXPRDUP_REDUCE flag is set, then the return value includes
-** space to duplicate all Expr nodes in the tree formed by Expr.pLeft
-** and Expr.pRight variables (but not for any structures pointed to or
+** If the EXPRDUP_REDUCE flag is set, then the return value includes
+** space to duplicate all Expr nodes in the tree formed by Expr.pLeft
+** and Expr.pRight variables (but not for any structures pointed to or
** descended from the Expr.x.pList or Expr.x.pSelect variables).
*/
static int dupedExprSize(Expr *p, int flags){
@@ -104139,8 +100977,8 @@ static int dupedExprSize(Expr *p, int flags){
}
/*
-** This function is similar to sqlite3ExprDup(), except that if pzBuffer
-** is not NULL then *pzBuffer is assumed to point to a buffer large enough
+** This function is similar to sqlite3ExprDup(), except that if pzBuffer
+** is not NULL then *pzBuffer is assumed to point to a buffer large enough
** to store the copy of expression p, the copies of p->u.zToken
** (if applicable), and the copies of the p->pLeft and p->pRight expressions,
** if any. Before returning, *pzBuffer is set to the first byte past the
@@ -104186,7 +101024,7 @@ static Expr *exprDup(sqlite3 *db, Expr *p, int dupFlags, u8 **pzBuffer){
}else{
u32 nSize = (u32)exprStructSize(p);
memcpy(zAlloc, p, nSize);
- if( nSizeflags &= ~(EP_Reduced|EP_TokenOnly|EP_Static|EP_MemToken);
pNew->flags |= nStructSize & (EP_Reduced|EP_TokenOnly);
pNew->flags |= staticFlag;
+ ExprClearVVAProperties(pNew);
+ if( dupFlags ){
+ ExprSetVVAProperty(pNew, EP_Immutable);
+ }
/* Copy the p->u.zToken string, if any. */
if( nToken ){
@@ -104246,7 +101088,7 @@ static Expr *exprDup(sqlite3 *db, Expr *p, int dupFlags, u8 **pzBuffer){
}
/*
-** Create and return a deep copy of the object passed as the second
+** Create and return a deep copy of the object passed as the second
** argument. If an OOM condition is encountered, NULL is returned
** and the db->mallocFailed flag set.
*/
@@ -104312,7 +101154,7 @@ static void gatherSelectWindows(Select *p){
** without effecting the originals.
**
** The expression list, ID, and source lists return by sqlite3ExprListDup(),
-** sqlite3IdListDup(), and sqlite3SrcListDup() can not be further expanded
+** sqlite3IdListDup(), and sqlite3SrcListDup() can not be further expanded
** by subsequent calls to sqlite*ListAppend() routines.
**
** Any tables that the SrcList might point to are not duplicated.
@@ -104342,9 +101184,9 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListDup(sqlite3 *db, ExprList *p, int flags)
Expr *pOldExpr = pOldItem->pExpr;
Expr *pNewExpr;
pItem->pExpr = sqlite3ExprDup(db, pOldExpr, flags);
- if( pOldExpr
+ if( pOldExpr
&& pOldExpr->op==TK_SELECT_COLUMN
- && (pNewExpr = pItem->pExpr)!=0
+ && (pNewExpr = pItem->pExpr)!=0
){
assert( pNewExpr->iColumn==0 || i>0 );
if( pNewExpr->iColumn==0 ){
@@ -104358,12 +101200,11 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListDup(sqlite3 *db, ExprList *p, int flags)
pNewExpr->pLeft = pPriorSelectCol;
}
}
- pItem->zName = sqlite3DbStrDup(db, pOldItem->zName);
- pItem->zSpan = sqlite3DbStrDup(db, pOldItem->zSpan);
+ pItem->zEName = sqlite3DbStrDup(db, pOldItem->zEName);
pItem->sortFlags = pOldItem->sortFlags;
+ pItem->eEName = pOldItem->eEName;
pItem->done = 0;
pItem->bNulls = pOldItem->bNulls;
- pItem->bSpanIsTab = pOldItem->bSpanIsTab;
pItem->bSorterRef = pOldItem->bSorterRef;
pItem->u = pOldItem->u;
}
@@ -104372,7 +101213,7 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListDup(sqlite3 *db, ExprList *p, int flags)
/*
** If cursors, triggers, views and subqueries are all omitted from
-** the build, then none of the following routines, except for
+** the build, then none of the following routines, except for
** sqlite3SelectDup(), can be called. sqlite3SelectDup() is sometimes
** called with a NULL argument.
*/
@@ -104405,7 +101246,7 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListDup(sqlite3 *db, SrcList *p, int flags){
}
pNewItem->pIBIndex = pOldItem->pIBIndex;
if( pNewItem->fg.isTabFunc ){
- pNewItem->u1.pFuncArg =
+ pNewItem->u1.pFuncArg =
sqlite3ExprListDup(db, pOldItem->u1.pFuncArg, flags);
}
pTab = pNewItem->pTab = pOldItem->pTab;
@@ -104522,7 +101363,7 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListAppend(
pList->nExpr = 0;
}else if( (pList->nExpr & (pList->nExpr-1))==0 ){
ExprList *pNew;
- pNew = sqlite3DbRealloc(db, pList,
+ pNew = sqlite3DbRealloc(db, pList,
sizeof(*pList)+(2*(sqlite3_int64)pList->nExpr-1)*sizeof(pList->a[0]));
if( pNew==0 ){
goto no_mem;
@@ -104530,13 +101371,13 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListAppend(
pList = pNew;
}
pItem = &pList->a[pList->nExpr++];
- assert( offsetof(struct ExprList_item,zName)==sizeof(pItem->pExpr) );
+ assert( offsetof(struct ExprList_item,zEName)==sizeof(pItem->pExpr) );
assert( offsetof(struct ExprList_item,pExpr)==0 );
- memset(&pItem->zName,0,sizeof(*pItem)-offsetof(struct ExprList_item,zName));
+ memset(&pItem->zEName,0,sizeof(*pItem)-offsetof(struct ExprList_item,zEName));
pItem->pExpr = pExpr;
return pList;
-no_mem:
+no_mem:
/* Avoid leaking memory if malloc has failed. */
sqlite3ExprDelete(db, pExpr);
sqlite3ExprListDelete(db, pList);
@@ -104569,8 +101410,8 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListAppendVector(
if( NEVER(pColumns==0) ) goto vector_append_error;
if( pExpr==0 ) goto vector_append_error;
- /* If the RHS is a vector, then we can immediately check to see that
- ** the size of the RHS and LHS match. But if the RHS is a SELECT,
+ /* If the RHS is a vector, then we can immediately check to see that
+ ** the size of the RHS and LHS match. But if the RHS is a SELECT,
** wildcards ("*") in the result set of the SELECT must be expanded before
** we can do the size check, so defer the size check until code generation.
*/
@@ -104589,7 +101430,7 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListAppendVector(
pList = sqlite3ExprListAppend(pParse, pList, pSubExpr);
if( pList ){
assert( pList->nExpr==iFirst+i+1 );
- pList->a[pList->nExpr-1].zName = pColumns->a[i].zName;
+ pList->a[pList->nExpr-1].zEName = pColumns->a[i].zName;
pColumns->a[i].zName = 0;
}
}
@@ -104598,7 +101439,7 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListAppendVector(
Expr *pFirst = pList->a[iFirst].pExpr;
assert( pFirst!=0 );
assert( pFirst->op==TK_SELECT_COLUMN );
-
+
/* Store the SELECT statement in pRight so it will be deleted when
** sqlite3ExprListDelete() is called */
pFirst->pRight = pExpr;
@@ -104624,13 +101465,13 @@ SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList *p, int iSortOrder, int
assert( p->nExpr>0 );
assert( SQLITE_SO_UNDEFINED<0 && SQLITE_SO_ASC==0 && SQLITE_SO_DESC>0 );
- assert( iSortOrder==SQLITE_SO_UNDEFINED
- || iSortOrder==SQLITE_SO_ASC
- || iSortOrder==SQLITE_SO_DESC
+ assert( iSortOrder==SQLITE_SO_UNDEFINED
+ || iSortOrder==SQLITE_SO_ASC
+ || iSortOrder==SQLITE_SO_DESC
);
- assert( eNulls==SQLITE_SO_UNDEFINED
- || eNulls==SQLITE_SO_ASC
- || eNulls==SQLITE_SO_DESC
+ assert( eNulls==SQLITE_SO_UNDEFINED
+ || eNulls==SQLITE_SO_ASC
+ || eNulls==SQLITE_SO_DESC
);
pItem = &p->a[p->nExpr-1];
@@ -104649,7 +101490,7 @@ SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList *p, int iSortOrder, int
}
/*
-** Set the ExprList.a[].zName element of the most recently added item
+** Set the ExprList.a[].zEName element of the most recently added item
** on the expression list.
**
** pList might be NULL following an OOM error. But pName should never be
@@ -104663,15 +101504,22 @@ SQLITE_PRIVATE void sqlite3ExprListSetName(
int dequote /* True to cause the name to be dequoted */
){
assert( pList!=0 || pParse->db->mallocFailed!=0 );
+ assert( pParse->eParseMode!=PARSE_MODE_UNMAP || dequote==0 );
if( pList ){
struct ExprList_item *pItem;
assert( pList->nExpr>0 );
pItem = &pList->a[pList->nExpr-1];
- assert( pItem->zName==0 );
- pItem->zName = sqlite3DbStrNDup(pParse->db, pName->z, pName->n);
- if( dequote ) sqlite3Dequote(pItem->zName);
- if( IN_RENAME_OBJECT ){
- sqlite3RenameTokenMap(pParse, (void*)pItem->zName, pName);
+ assert( pItem->zEName==0 );
+ assert( pItem->eEName==ENAME_NAME );
+ pItem->zEName = sqlite3DbStrNDup(pParse->db, pName->z, pName->n);
+ if( dequote ){
+ /* If dequote==0, then pName->z does not point to part of a DDL
+ ** statement handled by the parser. And so no token need be added
+ ** to the token-map. */
+ sqlite3Dequote(pItem->zEName);
+ if( IN_RENAME_OBJECT ){
+ sqlite3RenameTokenMap(pParse, (void*)pItem->zEName, pName);
+ }
}
}
}
@@ -104695,8 +101543,10 @@ SQLITE_PRIVATE void sqlite3ExprListSetSpan(
if( pList ){
struct ExprList_item *pItem = &pList->a[pList->nExpr-1];
assert( pList->nExpr>0 );
- sqlite3DbFree(db, pItem->zSpan);
- pItem->zSpan = sqlite3DbSpanDup(db, zStart, zEnd);
+ if( pItem->zEName==0 ){
+ pItem->zEName = sqlite3DbSpanDup(db, zStart, zEnd);
+ pItem->eEName = ENAME_SPAN;
+ }
}
}
@@ -104726,8 +101576,7 @@ static SQLITE_NOINLINE void exprListDeleteNN(sqlite3 *db, ExprList *pList){
assert( pList->nExpr>0 );
do{
sqlite3ExprDelete(db, pItem->pExpr);
- sqlite3DbFree(db, pItem->zName);
- sqlite3DbFree(db, pItem->zSpan);
+ sqlite3DbFree(db, pItem->zEName);
pItem++;
}while( --i>0 );
sqlite3DbFreeNN(db, pList);
@@ -104765,19 +101614,34 @@ SQLITE_PRIVATE int sqlite3SelectWalkFail(Walker *pWalker, Select *NotUsed){
return WRC_Abort;
}
+/*
+** Check the input string to see if it is "true" or "false" (in any case).
+**
+** If the string is.... Return
+** "true" EP_IsTrue
+** "false" EP_IsFalse
+** anything else 0
+*/
+SQLITE_PRIVATE u32 sqlite3IsTrueOrFalse(const char *zIn){
+ if( sqlite3StrICmp(zIn, "true")==0 ) return EP_IsTrue;
+ if( sqlite3StrICmp(zIn, "false")==0 ) return EP_IsFalse;
+ return 0;
+}
+
+
/*
** If the input expression is an ID with the name "true" or "false"
** then convert it into an TK_TRUEFALSE term. Return non-zero if
** the conversion happened, and zero if the expression is unaltered.
*/
SQLITE_PRIVATE int sqlite3ExprIdToTrueFalse(Expr *pExpr){
+ u32 v;
assert( pExpr->op==TK_ID || pExpr->op==TK_STRING );
if( !ExprHasProperty(pExpr, EP_Quoted)
- && (sqlite3StrICmp(pExpr->u.zToken, "true")==0
- || sqlite3StrICmp(pExpr->u.zToken, "false")==0)
+ && (v = sqlite3IsTrueOrFalse(pExpr->u.zToken))!=0
){
pExpr->op = TK_TRUEFALSE;
- ExprSetProperty(pExpr, pExpr->u.zToken[4]==0 ? EP_IsTrue : EP_IsFalse);
+ ExprSetProperty(pExpr, v);
return 1;
}
return 0;
@@ -104839,11 +101703,12 @@ SQLITE_PRIVATE Expr *sqlite3ExprSimplifiedAndOr(Expr *pExpr){
** In all cases, the callbacks set Walker.eCode=0 and abort if the expression
** is found to not be a constant.
**
-** The sqlite3ExprIsConstantOrFunction() is used for evaluating expressions
-** in a CREATE TABLE statement. The Walker.eCode value is 5 when parsing
-** an existing schema and 4 when processing a new statement. A bound
-** parameter raises an error for new statements, but is silently converted
-** to NULL for existing schemas. This allows sqlite_master tables that
+** The sqlite3ExprIsConstantOrFunction() is used for evaluating DEFAULT
+** expressions in a CREATE TABLE statement. The Walker.eCode value is 5
+** when parsing an existing schema out of the sqlite_schema table and 4
+** when processing a new CREATE TABLE statement. A bound parameter raises
+** an error for new statements, but is silently converted
+** to NULL for existing schemas. This allows sqlite_schema tables that
** contain a bound parameter because they were generated by older versions
** of SQLite to be parsed by newer versions of SQLite without raising a
** malformed schema error.
@@ -104863,7 +101728,10 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){
** and either pWalker->eCode==4 or 5 or the function has the
** SQLITE_FUNC_CONST flag. */
case TK_FUNCTION:
- if( pWalker->eCode>=4 || ExprHasProperty(pExpr,EP_ConstFunc) ){
+ if( (pWalker->eCode>=4 || ExprHasProperty(pExpr,EP_ConstFunc))
+ && !ExprHasProperty(pExpr, EP_WinFunc)
+ ){
+ if( pWalker->eCode==5 ) ExprSetProperty(pExpr, EP_FromDDL);
return WRC_Continue;
}else{
pWalker->eCode = 0;
@@ -104875,7 +101743,7 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){
if( sqlite3ExprIdToTrueFalse(pExpr) ){
return WRC_Prune;
}
- /* Fall thru */
+ /* no break */ deliberate_fall_through
case TK_COLUMN:
case TK_AGG_FUNCTION:
case TK_AGG_COLUMN:
@@ -104889,18 +101757,20 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){
if( pWalker->eCode==3 && pExpr->iTable==pWalker->u.iCur ){
return WRC_Continue;
}
- /* Fall through */
+ /* no break */ deliberate_fall_through
case TK_IF_NULL_ROW:
case TK_REGISTER:
+ case TK_DOT:
testcase( pExpr->op==TK_REGISTER );
testcase( pExpr->op==TK_IF_NULL_ROW );
+ testcase( pExpr->op==TK_DOT );
pWalker->eCode = 0;
return WRC_Abort;
case TK_VARIABLE:
if( pWalker->eCode==5 ){
/* Silently convert bound parameters that appear inside of CREATE
** statements into a NULL when parsing the CREATE statement text out
- ** of the sqlite_master table */
+ ** of the sqlite_schema table */
pExpr->op = TK_NULL;
}else if( pWalker->eCode==4 ){
/* A bound parameter in a CREATE statement that originates from
@@ -104908,7 +101778,7 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){
pWalker->eCode = 0;
return WRC_Abort;
}
- /* Fall through */
+ /* no break */ deliberate_fall_through
default:
testcase( pExpr->op==TK_SELECT ); /* sqlite3SelectWalkFail() disallows */
testcase( pExpr->op==TK_EXISTS ); /* sqlite3SelectWalkFail() disallows */
@@ -104951,7 +101821,7 @@ SQLITE_PRIVATE int sqlite3ExprIsConstant(Expr *p){
**
** When this routine returns true, it indicates that the expression
** can be added to the pParse->pConstExpr list and evaluated once when
-** the prepared statement starts up. See sqlite3ExprCodeAtInit().
+** the prepared statement starts up. See sqlite3ExprCodeRunJustOnce().
*/
SQLITE_PRIVATE int sqlite3ExprIsConstantNotJoin(Expr *p){
return exprIsConst(p, 2, 0);
@@ -104998,7 +101868,7 @@ static int exprNodeIsConstantOrGroupBy(Walker *pWalker, Expr *pExpr){
/*
** Walk the expression tree passed as the first argument. Return non-zero
-** if the expression consists entirely of constants or copies of terms
+** if the expression consists entirely of constants or copies of terms
** in pGroupBy that sort with the BINARY collation sequence.
**
** This routine is used to determine if a term of the HAVING clause can
@@ -105027,9 +101897,21 @@ SQLITE_PRIVATE int sqlite3ExprIsConstantOrGroupBy(Parse *pParse, Expr *p, ExprLi
}
/*
-** Walk an expression tree. Return non-zero if the expression is constant
-** or a function call with constant arguments. Return and 0 if there
-** are any variables.
+** Walk an expression tree for the DEFAULT field of a column definition
+** in a CREATE TABLE statement. Return non-zero if the expression is
+** acceptable for use as a DEFAULT. That is to say, return non-zero if
+** the expression is constant or a function call with constant arguments.
+** Return and 0 if there are any variables.
+**
+** isInit is true when parsing from sqlite_schema. isInit is false when
+** processing a new CREATE TABLE statement. When isInit is true, parameters
+** (such as ? or $abc) in the expression are converted into NULL. When
+** isInit is false, parameters raise an error. Parameters should not be
+** allowed in a CREATE TABLE statement, but some legacy versions of SQLite
+** allowed it, so we need to support it when reading sqlite_schema for
+** backwards compatibility.
+**
+** If isInit is true, set EP_FromDDL on every TK_FUNCTION node.
**
** For the purposes of this function, a double-quoted string (ex: "abc")
** is considered a variable but a single-quoted string (ex: 'abc') is
@@ -105100,7 +101982,7 @@ SQLITE_PRIVATE int sqlite3ExprIsInteger(Expr *p, int *pValue){
** Return FALSE if there is no chance that the expression can be NULL.
**
** If the expression might be NULL or if the expression is too complex
-** to tell return TRUE.
+** to tell return TRUE.
**
** This routine is used as an optimization, to skip OP_IsNull opcodes
** when we know that a value cannot be NULL. Hence, a false positive
@@ -105126,7 +102008,9 @@ SQLITE_PRIVATE int sqlite3ExprCanBeNull(const Expr *p){
case TK_COLUMN:
return ExprHasProperty(p, EP_CanBeNull) ||
p->y.pTab==0 || /* Reference to column of index on expression */
- (p->iColumn>=0 && p->y.pTab->aCol[p->iColumn].notNull==0);
+ (p->iColumn>=0
+ && ALWAYS(p->y.pTab->aCol!=0) /* Defense against OOM problems */
+ && p->y.pTab->aCol[p->iColumn].notNull==0);
default:
return 1;
}
@@ -105186,7 +102070,7 @@ SQLITE_PRIVATE int sqlite3IsRowid(const char *z){
}
/*
-** pX is the RHS of an IN operator. If pX is a SELECT statement
+** pX is the RHS of an IN operator. If pX is a SELECT statement
** that can be simplified to a direct table access, then return
** a pointer to the SELECT statement. If pX is not a SELECT statement,
** or if the SELECT statement needs to be manifested into a transient
@@ -105252,7 +102136,7 @@ static void sqlite3SetHasNullFlag(Vdbe *v, int iCur, int regHasNull){
#ifndef SQLITE_OMIT_SUBQUERY
/*
-** The argument is an IN operator with a list (not a subquery) on the
+** The argument is an IN operator with a list (not a subquery) on the
** right-hand side. Return TRUE if that list is constant.
*/
static int sqlite3InRhsIsConstant(Expr *pIn){
@@ -105311,9 +102195,9 @@ static int sqlite3InRhsIsConstant(Expr *pIn){
** to be unique - either because it is an INTEGER PRIMARY KEY or due to
** a UNIQUE constraint or index.
**
-** When IN_INDEX_MEMBERSHIP is used (and the b-tree will be used
-** for fast set membership tests) then an epheremal table must
-** be used unless is a single INTEGER PRIMARY KEY column or an
+** When IN_INDEX_MEMBERSHIP is used (and the b-tree will be used
+** for fast set membership tests) then an epheremal table must
+** be used unless is a single INTEGER PRIMARY KEY column or an
** index can be found with the specified as its left-most.
**
** If the IN_INDEX_NOOP_OK and IN_INDEX_MEMBERSHIP are both set and
@@ -105325,7 +102209,7 @@ static int sqlite3InRhsIsConstant(Expr *pIn){
**
** When the b-tree is being used for membership tests, the calling function
** might need to know whether or not the RHS side of the IN operator
-** contains a NULL. If prRhsHasNull is not a NULL pointer and
+** contains a NULL. If prRhsHasNull is not a NULL pointer and
** if there is any chance that the (...) might contain a NULL value at
** runtime, then a register is allocated and the register number written
** to *prRhsHasNull. If there is no chance that the (...) contains a
@@ -105365,9 +102249,9 @@ SQLITE_PRIVATE int sqlite3FindInIndex(
assert( pX->op==TK_IN );
mustBeUnique = (inFlags & IN_INDEX_LOOP)!=0;
- /* If the RHS of this IN(...) operator is a SELECT, and if it matters
+ /* If the RHS of this IN(...) operator is a SELECT, and if it matters
** whether or not the SELECT result contains NULL values, check whether
- ** or not NULL is actually possible (it may not be, for example, due
+ ** or not NULL is actually possible (it may not be, for example, due
** to NOT NULL constraints in the schema). If no NULL values are possible,
** set prRhsHasNull to 0 before continuing. */
if( prRhsHasNull && (pX->flags & EP_xIsSelect) ){
@@ -105382,12 +102266,12 @@ SQLITE_PRIVATE int sqlite3FindInIndex(
}
/* Check to see if an existing table or index can be used to
- ** satisfy the query. This is preferable to generating a new
+ ** satisfy the query. This is preferable to generating a new
** ephemeral table. */
if( pParse->nErr==0 && (p = isCandidateForInOpt(pX))!=0 ){
sqlite3 *db = pParse->db; /* Database connection */
Table *pTab; /* Table
. */
- i16 iDb; /* Database idx for pTab */
+ int iDb; /* Database idx for pTab */
ExprList *pEList = p->pEList;
int nExpr = pEList->nExpr;
@@ -105398,6 +102282,7 @@ SQLITE_PRIVATE int sqlite3FindInIndex(
/* Code an OP_Transaction and OP_TableLock for . */
iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
+ assert( iDb>=0 && iDbtnum, 0, pTab->zName);
@@ -105417,7 +102302,7 @@ SQLITE_PRIVATE int sqlite3FindInIndex(
int affinity_ok = 1;
int i;
- /* Check that the affinity that will be used to perform each
+ /* Check that the affinity that will be used to perform each
** comparison is the same as the affinity of each column in table
** on the RHS of the IN operator. If it not, it is not possible to
** use any index of the RHS table. */
@@ -105462,14 +102347,14 @@ SQLITE_PRIVATE int sqlite3FindInIndex(
continue; /* This index is not unique over the IN RHS columns */
}
}
-
+
colUsed = 0; /* Columns of index used so far */
for(i=0; ipLeft, i);
Expr *pRhs = pEList->a[i].pExpr;
CollSeq *pReq = sqlite3BinaryCompareCollSeq(pParse, pLhs, pRhs);
int j;
-
+
assert( pReq!=0 || pRhs->iColumn==XN_ROWID || pParse->nErr );
for(j=0; jaiColumn[j]!=pRhs->iColumn ) continue;
@@ -105485,7 +102370,7 @@ SQLITE_PRIVATE int sqlite3FindInIndex(
colUsed |= mCol;
if( aiMap ) aiMap[i] = j;
}
-
+
assert( i==nExpr || colUsed!=(MASKBIT(nExpr)-1) );
if( colUsed==(MASKBIT(nExpr)-1) ){
/* If we reach this point, that means the index pIdx is usable */
@@ -105497,11 +102382,11 @@ SQLITE_PRIVATE int sqlite3FindInIndex(
VdbeComment((v, "%s", pIdx->zName));
assert( IN_INDEX_INDEX_DESC == IN_INDEX_INDEX_ASC+1 );
eType = IN_INDEX_INDEX_ASC + pIdx->aSortOrder[0];
-
+
if( prRhsHasNull ){
#ifdef SQLITE_ENABLE_COLUMN_USED_MASK
i64 mask = (1<nMem;
@@ -105563,8 +102448,8 @@ SQLITE_PRIVATE int sqlite3FindInIndex(
#ifndef SQLITE_OMIT_SUBQUERY
/*
-** Argument pExpr is an (?, ?...) IN(...) expression. This
-** function allocates and returns a nul-terminated string containing
+** Argument pExpr is an (?, ?...) IN(...) expression. This
+** function allocates and returns a nul-terminated string containing
** the affinities to be used for each column of the comparison.
**
** It is the responsibility of the caller to ensure that the returned
@@ -105597,20 +102482,22 @@ static char *exprINAffinity(Parse *pParse, Expr *pExpr){
#ifndef SQLITE_OMIT_SUBQUERY
/*
-** Load the Parse object passed as the first argument with an error
+** Load the Parse object passed as the first argument with an error
** message of the form:
**
** "sub-select returns N columns - expected M"
-*/
+*/
SQLITE_PRIVATE void sqlite3SubselectError(Parse *pParse, int nActual, int nExpect){
- const char *zFmt = "sub-select returns %d columns - expected %d";
- sqlite3ErrorMsg(pParse, zFmt, nActual, nExpect);
+ if( pParse->nErr==0 ){
+ const char *zFmt = "sub-select returns %d columns - expected %d";
+ sqlite3ErrorMsg(pParse, zFmt, nActual, nExpect);
+ }
}
#endif
/*
** Expression pExpr is a vector that has been used in a context where
-** it is not permitted. If pExpr is a sub-select vector, this routine
+** it is not permitted. If pExpr is a sub-select vector, this routine
** loads the Parse object with a message of the form:
**
** "sub-select returns N columns - expected 1"
@@ -105618,7 +102505,7 @@ SQLITE_PRIVATE void sqlite3SubselectError(Parse *pParse, int nActual, int nExpec
** Or, if it is a regular scalar vector:
**
** "row value misused"
-*/
+*/
SQLITE_PRIVATE void sqlite3VectorErrorMsg(Parse *pParse, Expr *pExpr){
#ifndef SQLITE_OMIT_SUBQUERY
if( pExpr->flags & EP_xIsSelect ){
@@ -105681,7 +102568,7 @@ SQLITE_PRIVATE void sqlite3CodeRhsOfIN(
if( !ExprHasProperty(pExpr, EP_VarSelect) && pParse->iSelfTab==0 ){
/* Reuse of the RHS is allowed */
/* If this routine has already been coded, but the previous code
- ** might not have been invoked yet, so invoke it now as a subroutine.
+ ** might not have been invoked yet, so invoke it now as a subroutine.
*/
if( ExprHasProperty(pExpr, EP_Subrtn) ){
addrOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v);
@@ -105698,6 +102585,7 @@ SQLITE_PRIVATE void sqlite3CodeRhsOfIN(
/* Begin coding the subroutine */
ExprSetProperty(pExpr, EP_Subrtn);
+ assert( !ExprHasProperty(pExpr, EP_TokenOnly|EP_Reduced) );
pExpr->y.sub.regReturn = ++pParse->nMem;
pExpr->y.sub.iAddr =
sqlite3VdbeAddOp2(v, OP_Integer, 0, pExpr->y.sub.regReturn) + 1;
@@ -105779,6 +102667,8 @@ SQLITE_PRIVATE void sqlite3CodeRhsOfIN(
affinity = sqlite3ExprAffinity(pLeft);
if( affinity<=SQLITE_AFF_NONE ){
affinity = SQLITE_AFF_BLOB;
+ }else if( affinity==SQLITE_AFF_REAL ){
+ affinity = SQLITE_AFF_NUMERIC;
}
if( pKeyInfo ){
assert( sqlite3KeyInfoIsWriteable(pKeyInfo) );
@@ -105832,7 +102722,7 @@ SQLITE_PRIVATE void sqlite3CodeRhsOfIN(
**
** The pExpr parameter is the SELECT or EXISTS operator to be coded.
**
-** Return the register that holds the result. For a multi-column SELECT,
+** Return the register that holds the result. For a multi-column SELECT,
** the result is stored in a contiguous array of registers and the
** return value is the register of the left-most result column.
** Return 0 if an error occurs.
@@ -105883,7 +102773,7 @@ SQLITE_PRIVATE int sqlite3CodeSubselect(Parse *pParse, Expr *pExpr){
addrOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v);
}
-
+
/* For a SELECT, generate code to put the values for all columns of
** the first row into an array of registers and return the index of
** the first register.
@@ -105891,7 +102781,7 @@ SQLITE_PRIVATE int sqlite3CodeSubselect(Parse *pParse, Expr *pExpr){
** If this is an EXISTS, write an integer 0 (not exists) or 1 (exists)
** into a register and return that register number.
**
- ** In both cases, the query is augmented with "LIMIT 1". Any
+ ** In both cases, the query is augmented with "LIMIT 1". Any
** preexisting limit is discarded in place of the new LIMIT 1.
*/
ExplainQueryPlan((pParse, 1, "%sSCALAR SUBQUERY %d",
@@ -105948,9 +102838,9 @@ SQLITE_PRIVATE int sqlite3CodeSubselect(Parse *pParse, Expr *pExpr){
#ifndef SQLITE_OMIT_SUBQUERY
/*
-** Expr pIn is an IN(...) expression. This function checks that the
-** sub-select on the RHS of the IN() operator has the same number of
-** columns as the vector on the LHS. Or, if the RHS of the IN() is not
+** Expr pIn is an IN(...) expression. This function checks that the
+** sub-select on the RHS of the IN() operator has the same number of
+** columns as the vector on the LHS. Or, if the RHS of the IN() is not
** a sub-query, that the LHS is a vector of size 1.
*/
SQLITE_PRIVATE int sqlite3ExprCheckIN(Parse *pParse, Expr *pIn){
@@ -105975,18 +102865,18 @@ SQLITE_PRIVATE int sqlite3ExprCheckIN(Parse *pParse, Expr *pIn){
** x IN (SELECT ...)
** x IN (value, value, ...)
**
-** The left-hand side (LHS) is a scalar or vector expression. The
+** The left-hand side (LHS) is a scalar or vector expression. The
** right-hand side (RHS) is an array of zero or more scalar values, or a
** subquery. If the RHS is a subquery, the number of result columns must
** match the number of columns in the vector on the LHS. If the RHS is
-** a list of values, the LHS must be a scalar.
+** a list of values, the LHS must be a scalar.
**
** The IN operator is true if the LHS value is contained within the RHS.
-** The result is false if the LHS is definitely not in the RHS. The
-** result is NULL if the presence of the LHS in the RHS cannot be
+** The result is false if the LHS is definitely not in the RHS. The
+** result is NULL if the presence of the LHS in the RHS cannot be
** determined due to NULLs.
**
-** This routine generates code that jumps to destIfFalse if the LHS is not
+** This routine generates code that jumps to destIfFalse if the LHS is not
** contained within the RHS. If due to NULLs we cannot determine if the LHS
** is contained in the RHS then jump to destIfNull. If the LHS is contained
** within the RHS then fall through.
@@ -106015,9 +102905,11 @@ static void sqlite3ExprCodeIN(
int destStep6 = 0; /* Start of code for Step 6 */
int addrTruthOp; /* Address of opcode that determines the IN is true */
int destNotNull; /* Jump here if a comparison is not true in step 6 */
- int addrTop; /* Top of the step-6 loop */
+ int addrTop; /* Top of the step-6 loop */
int iTab = 0; /* Index to use */
+ u8 okConstFactor = pParse->okConstFactor;
+ assert( !ExprHasVVAProperty(pExpr,EP_Immutable) );
pLeft = pExpr->pLeft;
if( sqlite3ExprCheckIN(pParse, pExpr) ) return;
zAff = exprINAffinity(pParse, pExpr);
@@ -106040,7 +102932,7 @@ static void sqlite3ExprCodeIN(
aiMap, &iTab);
assert( pParse->nErr || nVector==1 || eType==IN_INDEX_EPH
- || eType==IN_INDEX_INDEX_ASC || eType==IN_INDEX_INDEX_DESC
+ || eType==IN_INDEX_INDEX_ASC || eType==IN_INDEX_INDEX_DESC
);
#ifdef SQLITE_DEBUG
/* Confirm that aiMap[] contains nVector integer values between 0 and
@@ -106052,16 +102944,22 @@ static void sqlite3ExprCodeIN(
}
#endif
- /* Code the LHS, the from " IN (...)". If the LHS is a
- ** vector, then it is stored in an array of nVector registers starting
+ /* Code the LHS, the from " IN (...)". If the LHS is a
+ ** vector, then it is stored in an array of nVector registers starting
** at r1.
**
** sqlite3FindInIndex() might have reordered the fields of the LHS vector
** so that the fields are in the same order as an existing index. The
** aiMap[] array contains a mapping from the original LHS field order to
** the field order that matches the RHS index.
- */
+ **
+ ** Avoid factoring the LHS of the IN(...) expression out of the loop,
+ ** even if it is constant, as OP_Affinity may be used on the register
+ ** by code generated below. */
+ assert( pParse->okConstFactor==okConstFactor );
+ pParse->okConstFactor = 0;
rLhsOrig = exprCodeVector(pParse, pLeft, &iDummy);
+ pParse->okConstFactor = okConstFactor;
for(i=0; ipLeft)==SQLITE_AFF_REAL;
for(ii=0; iinExpr; ii++){
- if( bLhsReal ){
- r2 = regToFree = sqlite3GetTempReg(pParse);
- sqlite3ExprCode(pParse, pList->a[ii].pExpr, r2);
- sqlite3VdbeAddOp4(v, OP_Affinity, r2, 1, 0, "E", P4_STATIC);
- }else{
- r2 = sqlite3ExprCodeTemp(pParse, pList->a[ii].pExpr, ®ToFree);
- }
+ r2 = sqlite3ExprCodeTemp(pParse, pList->a[ii].pExpr, ®ToFree);
if( regCkNull && sqlite3ExprCanBeNull(pList->a[ii].pExpr) ){
sqlite3VdbeAddOp3(v, OP_BitAnd, regCkNull, r2, regCkNull);
}
+ sqlite3ReleaseTempReg(pParse, regToFree);
if( iinExpr-1 || destIfNull!=destIfFalse ){
- sqlite3VdbeAddOp4(v, OP_Eq, rLhs, labelOk, r2,
+ int op = rLhs!=r2 ? OP_Eq : OP_NotNull;
+ sqlite3VdbeAddOp4(v, op, rLhs, labelOk, r2,
(void*)pColl, P4_COLLSEQ);
- VdbeCoverageIf(v, iinExpr-1);
- VdbeCoverageIf(v, ii==pList->nExpr-1);
+ VdbeCoverageIf(v, iinExpr-1 && op==OP_Eq);
+ VdbeCoverageIf(v, ii==pList->nExpr-1 && op==OP_Eq);
+ VdbeCoverageIf(v, iinExpr-1 && op==OP_NotNull);
+ VdbeCoverageIf(v, ii==pList->nExpr-1 && op==OP_NotNull);
sqlite3VdbeChangeP5(v, zAff[0]);
}else{
+ int op = rLhs!=r2 ? OP_Ne : OP_IsNull;
assert( destIfNull==destIfFalse );
- sqlite3VdbeAddOp4(v, OP_Ne, rLhs, destIfFalse, r2,
- (void*)pColl, P4_COLLSEQ); VdbeCoverage(v);
+ sqlite3VdbeAddOp4(v, op, rLhs, destIfFalse, r2,
+ (void*)pColl, P4_COLLSEQ);
+ VdbeCoverageIf(v, op==OP_Ne);
+ VdbeCoverageIf(v, op==OP_IsNull);
sqlite3VdbeChangeP5(v, zAff[0] | SQLITE_JUMPIFNULL);
}
- sqlite3ReleaseTempReg(pParse, regToFree);
}
if( regCkNull ){
sqlite3VdbeAddOp2(v, OP_IsNull, regCkNull, destIfNull); VdbeCoverage(v);
@@ -106137,6 +103033,7 @@ static void sqlite3ExprCodeIN(
}else{
destStep2 = destStep6 = sqlite3VdbeMakeLabel(pParse);
}
+ if( pParse->nErr ) goto sqlite3ExprCodeIN_finished;
for(i=0; ipLeft, i);
if( sqlite3ExprCanBeNull(p) ){
@@ -106178,7 +103075,7 @@ static void sqlite3ExprCodeIN(
}
/* Step 5. If we do not care about the difference between NULL and
- ** FALSE, then just return false.
+ ** FALSE, then just return false.
*/
if( destIfFalse==destIfNull ) sqlite3VdbeGoto(v, destIfFalse);
@@ -106239,7 +103136,7 @@ sqlite3ExprCodeIN_oom_error:
** Generate an instruction that will put the floating point
** value described by z[0..n-1] into register iMem.
**
-** The z[] string will probably not be zero-terminated. But the
+** The z[] string will probably not be zero-terminated. But the
** z[n] character is guaranteed to be something that does not look
** like the continuation of the number.
*/
@@ -106328,11 +103225,20 @@ SQLITE_PRIVATE void sqlite3ExprCodeGeneratedColumn(
Column *pCol,
int regOut
){
- sqlite3ExprCode(pParse, pCol->pDflt, regOut);
- if( pCol->affinity>=SQLITE_AFF_TEXT ){
- sqlite3VdbeAddOp4(pParse->pVdbe, OP_Affinity, regOut, 1, 0,
- &pCol->affinity, 1);
+ int iAddr;
+ Vdbe *v = pParse->pVdbe;
+ assert( v!=0 );
+ assert( pParse->iSelfTab!=0 );
+ if( pParse->iSelfTab>0 ){
+ iAddr = sqlite3VdbeAddOp3(v, OP_IfNullRow, pParse->iSelfTab-1, 0, regOut);
+ }else{
+ iAddr = 0;
}
+ sqlite3ExprCodeCopy(pParse, pCol->pDflt, regOut);
+ if( pCol->affinity>=SQLITE_AFF_TEXT ){
+ sqlite3VdbeAddOp4(v, OP_Affinity, regOut, 1, 0, &pCol->affinity, 1);
+ }
+ if( iAddr ) sqlite3VdbeJumpHere(v, iAddr);
}
#endif /* SQLITE_OMIT_GENERATED_COLUMNS */
@@ -106391,7 +103297,7 @@ SQLITE_PRIVATE void sqlite3ExprCodeGetColumnOfTable(
/*
** Generate code that will extract the iColumn-th column from
-** table pTab and store the column value in register iReg.
+** table pTab and store the column value in register iReg.
**
** There must be an open cursor to pTab in iTable when this routine
** is called. If iColumn<0 then code is generated that extracts the rowid.
@@ -106407,7 +103313,8 @@ SQLITE_PRIVATE int sqlite3ExprCodeGetColumn(
assert( pParse->pVdbe!=0 );
sqlite3ExprCodeGetColumnOfTable(pParse->pVdbe, pTab, iTable, iColumn, iReg);
if( p5 ){
- sqlite3VdbeChangeP5(pParse->pVdbe, p5);
+ VdbeOp *pOp = sqlite3VdbeGetOp(pParse->pVdbe,-1);
+ if( pOp->opcode==OP_Column ) pOp->p5 = p5;
}
return iReg;
}
@@ -106417,7 +103324,6 @@ SQLITE_PRIVATE int sqlite3ExprCodeGetColumn(
** over to iTo..iTo+nReg-1.
*/
SQLITE_PRIVATE void sqlite3ExprCodeMove(Parse *pParse, int iFrom, int iTo, int nReg){
- assert( iFrom>=iTo+nReg || iFrom+nReg<=iTo );
sqlite3VdbeAddOp3(pParse->pVdbe, OP_Move, iFrom, iTo, nReg);
}
@@ -106469,6 +103375,124 @@ static int exprCodeVector(Parse *pParse, Expr *p, int *piFreeable){
return iResult;
}
+/*
+** If the last opcode is a OP_Copy, then set the do-not-merge flag (p5)
+** so that a subsequent copy will not be merged into this one.
+*/
+static void setDoNotMergeFlagOnCopy(Vdbe *v){
+ if( sqlite3VdbeGetOp(v, -1)->opcode==OP_Copy ){
+ sqlite3VdbeChangeP5(v, 1); /* Tag trailing OP_Copy as not mergable */
+ }
+}
+
+/*
+** Generate code to implement special SQL functions that are implemented
+** in-line rather than by using the usual callbacks.
+*/
+static int exprCodeInlineFunction(
+ Parse *pParse, /* Parsing context */
+ ExprList *pFarg, /* List of function arguments */
+ int iFuncId, /* Function ID. One of the INTFUNC_... values */
+ int target /* Store function result in this register */
+){
+ int nFarg;
+ Vdbe *v = pParse->pVdbe;
+ assert( v!=0 );
+ assert( pFarg!=0 );
+ nFarg = pFarg->nExpr;
+ assert( nFarg>0 ); /* All in-line functions have at least one argument */
+ switch( iFuncId ){
+ case INLINEFUNC_coalesce: {
+ /* Attempt a direct implementation of the built-in COALESCE() and
+ ** IFNULL() functions. This avoids unnecessary evaluation of
+ ** arguments past the first non-NULL argument.
+ */
+ int endCoalesce = sqlite3VdbeMakeLabel(pParse);
+ int i;
+ assert( nFarg>=2 );
+ sqlite3ExprCode(pParse, pFarg->a[0].pExpr, target);
+ for(i=1; ia[i].pExpr, target);
+ }
+ setDoNotMergeFlagOnCopy(v);
+ sqlite3VdbeResolveLabel(v, endCoalesce);
+ break;
+ }
+ case INLINEFUNC_iif: {
+ Expr caseExpr;
+ memset(&caseExpr, 0, sizeof(caseExpr));
+ caseExpr.op = TK_CASE;
+ caseExpr.x.pList = pFarg;
+ return sqlite3ExprCodeTarget(pParse, &caseExpr, target);
+ }
+
+ default: {
+ /* The UNLIKELY() function is a no-op. The result is the value
+ ** of the first argument.
+ */
+ assert( nFarg==1 || nFarg==2 );
+ target = sqlite3ExprCodeTarget(pParse, pFarg->a[0].pExpr, target);
+ break;
+ }
+
+ /***********************************************************************
+ ** Test-only SQL functions that are only usable if enabled
+ ** via SQLITE_TESTCTRL_INTERNAL_FUNCTIONS
+ */
+ case INLINEFUNC_expr_compare: {
+ /* Compare two expressions using sqlite3ExprCompare() */
+ assert( nFarg==2 );
+ sqlite3VdbeAddOp2(v, OP_Integer,
+ sqlite3ExprCompare(0,pFarg->a[0].pExpr, pFarg->a[1].pExpr,-1),
+ target);
+ break;
+ }
+
+ case INLINEFUNC_expr_implies_expr: {
+ /* Compare two expressions using sqlite3ExprImpliesExpr() */
+ assert( nFarg==2 );
+ sqlite3VdbeAddOp2(v, OP_Integer,
+ sqlite3ExprImpliesExpr(pParse,pFarg->a[0].pExpr, pFarg->a[1].pExpr,-1),
+ target);
+ break;
+ }
+
+ case INLINEFUNC_implies_nonnull_row: {
+ /* REsult of sqlite3ExprImpliesNonNullRow() */
+ Expr *pA1;
+ assert( nFarg==2 );
+ pA1 = pFarg->a[1].pExpr;
+ if( pA1->op==TK_COLUMN ){
+ sqlite3VdbeAddOp2(v, OP_Integer,
+ sqlite3ExprImpliesNonNullRow(pFarg->a[0].pExpr,pA1->iTable),
+ target);
+ }else{
+ sqlite3VdbeAddOp2(v, OP_Null, 0, target);
+ }
+ break;
+ }
+
+#ifdef SQLITE_DEBUG
+ case INLINEFUNC_affinity: {
+ /* The AFFINITY() function evaluates to a string that describes
+ ** the type affinity of the argument. This is used for testing of
+ ** the SQLite type logic.
+ */
+ const char *azAff[] = { "blob", "text", "numeric", "integer", "real" };
+ char aff;
+ assert( nFarg==1 );
+ aff = sqlite3ExprAffinity(pFarg->a[0].pExpr);
+ sqlite3VdbeLoadString(v, target,
+ (aff<=SQLITE_AFF_NONE) ? "none" : azAff[aff-SQLITE_AFF_BLOB]);
+ break;
+ }
+#endif
+ }
+ return target;
+}
+
/*
** Generate code into the current Vdbe to evaluate the given
@@ -106492,33 +103516,45 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target)
int p5 = 0;
assert( target>0 && target<=pParse->nMem );
- if( v==0 ){
- assert( pParse->db->mallocFailed );
- return 0;
- }
+ assert( v!=0 );
expr_code_doover:
if( pExpr==0 ){
op = TK_NULL;
}else{
+ assert( !ExprHasVVAProperty(pExpr,EP_Immutable) );
op = pExpr->op;
}
switch( op ){
case TK_AGG_COLUMN: {
AggInfo *pAggInfo = pExpr->pAggInfo;
- struct AggInfo_col *pCol = &pAggInfo->aCol[pExpr->iAgg];
+ struct AggInfo_col *pCol;
+ assert( pAggInfo!=0 );
+ assert( pExpr->iAgg>=0 && pExpr->iAggnColumn );
+ pCol = &pAggInfo->aCol[pExpr->iAgg];
if( !pAggInfo->directMode ){
assert( pCol->iMem>0 );
return pCol->iMem;
}else if( pAggInfo->useSortingIdx ){
+ Table *pTab = pCol->pTab;
sqlite3VdbeAddOp3(v, OP_Column, pAggInfo->sortingIdxPTab,
pCol->iSorterColumn, target);
+ if( pCol->iColumn<0 ){
+ VdbeComment((v,"%s.rowid",pTab->zName));
+ }else{
+ VdbeComment((v,"%s.%s",pTab->zName,pTab->aCol[pCol->iColumn].zName));
+ if( pTab->aCol[pCol->iColumn].affinity==SQLITE_AFF_REAL ){
+ sqlite3VdbeAddOp1(v, OP_RealAffinity, target);
+ }
+ }
return target;
}
/* Otherwise, fall thru into the TK_COLUMN case */
+ /* no break */ deliberate_fall_through
}
case TK_COLUMN: {
int iTab = pExpr->iTable;
+ int iReg;
if( ExprHasProperty(pExpr, EP_FixedCol) ){
/* This COLUMN expression is really a constant due to WHERE clause
** constraints, and that constant is coded by the pExpr->pLeft
@@ -106526,16 +103562,17 @@ expr_code_doover:
** datatype by applying the Affinity of the table column to the
** constant.
*/
- int iReg = sqlite3ExprCodeTarget(pParse, pExpr->pLeft,target);
- int aff = sqlite3TableColumnAffinity(pExpr->y.pTab, pExpr->iColumn);
+ int aff;
+ iReg = sqlite3ExprCodeTarget(pParse, pExpr->pLeft,target);
+ if( pExpr->y.pTab ){
+ aff = sqlite3TableColumnAffinity(pExpr->y.pTab, pExpr->iColumn);
+ }else{
+ aff = pExpr->affExpr;
+ }
if( aff>SQLITE_AFF_BLOB ){
static const char zAff[] = "B\000C\000D\000E";
assert( SQLITE_AFF_BLOB=='A' );
assert( SQLITE_AFF_TEXT=='B' );
- if( iReg!=target ){
- sqlite3VdbeAddOp2(v, OP_SCopy, iReg, target);
- iReg = target;
- }
sqlite3VdbeAddOp4(v, OP_Affinity, iReg, 1, 0,
&zAff[(aff-'B')*2], P4_STATIC);
}
@@ -106555,7 +103592,7 @@ expr_code_doover:
int iCol = pExpr->iColumn;
assert( pTab!=0 );
assert( iCol>=XN_ROWID );
- assert( iColy.pTab->nCol );
+ assert( iColnCol );
if( iCol<0 ){
return -1-pParse->iSelfTab;
}
@@ -106590,9 +103627,13 @@ expr_code_doover:
iTab = pParse->iSelfTab - 1;
}
}
- return sqlite3ExprCodeGetColumn(pParse, pExpr->y.pTab,
+ iReg = sqlite3ExprCodeGetColumn(pParse, pExpr->y.pTab,
pExpr->iColumn, iTab, target,
pExpr->op2);
+ if( pExpr->y.pTab==0 && pExpr->affExpr==SQLITE_AFF_REAL ){
+ sqlite3VdbeAddOp1(v, OP_RealAffinity, iReg);
+ }
+ return iReg;
}
case TK_INTEGER: {
codeInteger(pParse, pExpr, 0, target);
@@ -106614,7 +103655,12 @@ expr_code_doover:
sqlite3VdbeLoadString(v, target, pExpr->u.zToken);
return target;
}
- case TK_NULL: {
+ default: {
+ /* Make NULL the default case so that if a bug causes an illegal
+ ** Expr node to be passed into this function, it will be handled
+ ** sanely and not crash. But keep the assert() to bring the problem
+ ** to the attention of the developers. */
+ assert( op==TK_NULL );
sqlite3VdbeAddOp2(v, OP_Null, 0, target);
return target;
}
@@ -106641,7 +103687,7 @@ expr_code_doover:
sqlite3VdbeAddOp2(v, OP_Variable, pExpr->iColumn, target);
if( pExpr->u.zToken[1]!=0 ){
const char *z = sqlite3VListNumToName(pParse->pVList, pExpr->iColumn);
- assert( pExpr->u.zToken[0]=='?' || strcmp(pExpr->u.zToken, z)==0 );
+ assert( pExpr->u.zToken[0]=='?' || (z && !strcmp(pExpr->u.zToken, z)) );
pParse->pVList[0] = 0; /* Indicate VList may no longer be enlarged */
sqlite3VdbeAppendP4(v, (char*)z, P4_STATIC);
}
@@ -106704,7 +103750,7 @@ expr_code_doover:
case TK_BITOR:
case TK_SLASH:
case TK_LSHIFT:
- case TK_RSHIFT:
+ case TK_RSHIFT:
case TK_CONCAT: {
assert( TK_AND==OP_And ); testcase( op==TK_AND );
assert( TK_OR==OP_Or ); testcase( op==TK_OR );
@@ -106740,6 +103786,7 @@ expr_code_doover:
tempX.op = TK_INTEGER;
tempX.flags = EP_IntValue|EP_TokenOnly;
tempX.u.iValue = 0;
+ ExprClearVVAProperties(&tempX);
r1 = sqlite3ExprCodeTemp(pParse, &tempX, ®Free1);
r2 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free2);
sqlite3VdbeAddOp3(v, OP_Subtract, r2, r1, target);
@@ -106785,7 +103832,10 @@ expr_code_doover:
}
case TK_AGG_FUNCTION: {
AggInfo *pInfo = pExpr->pAggInfo;
- if( pInfo==0 ){
+ if( pInfo==0
+ || NEVER(pExpr->iAgg<0)
+ || NEVER(pExpr->iAgg>=pInfo->nFunc)
+ ){
assert( !ExprHasProperty(pExpr, EP_IntValue) );
sqlite3ErrorMsg(pParse, "misuse of aggregate: %s()", pExpr->u.zToken);
}else{
@@ -106811,16 +103861,13 @@ expr_code_doover:
#endif
if( ConstFactorOk(pParse) && sqlite3ExprIsConstantNotJoin(pExpr) ){
- /* SQL functions can be expensive. So try to move constant functions
- ** out of the inner loop, even if that means an extra OP_Copy. */
- return sqlite3ExprCodeAtInit(pParse, pExpr, -1);
+ /* SQL functions can be expensive. So try to avoid running them
+ ** multiple times if we know they always give the same result */
+ return sqlite3ExprCodeRunJustOnce(pParse, pExpr, -1);
}
assert( !ExprHasProperty(pExpr, EP_xIsSelect) );
- if( ExprHasProperty(pExpr, EP_TokenOnly) ){
- pFarg = 0;
- }else{
- pFarg = pExpr->x.pList;
- }
+ assert( !ExprHasProperty(pExpr, EP_TokenOnly) );
+ pFarg = pExpr->x.pList;
nFarg = pFarg ? pFarg->nExpr : 0;
assert( !ExprHasProperty(pExpr, EP_IntValue) );
zId = pExpr->u.zToken;
@@ -106834,48 +103881,15 @@ expr_code_doover:
sqlite3ErrorMsg(pParse, "unknown function: %s()", zId);
break;
}
-
- /* Attempt a direct implementation of the built-in COALESCE() and
- ** IFNULL() functions. This avoids unnecessary evaluation of
- ** arguments past the first non-NULL argument.
- */
- if( pDef->funcFlags & SQLITE_FUNC_COALESCE ){
- int endCoalesce = sqlite3VdbeMakeLabel(pParse);
- assert( nFarg>=2 );
- sqlite3ExprCode(pParse, pFarg->a[0].pExpr, target);
- for(i=1; ia[i].pExpr, target);
- }
- sqlite3VdbeResolveLabel(v, endCoalesce);
- break;
+ if( pDef->funcFlags & SQLITE_FUNC_INLINE ){
+ assert( (pDef->funcFlags & SQLITE_FUNC_UNSAFE)==0 );
+ assert( (pDef->funcFlags & SQLITE_FUNC_DIRECT)==0 );
+ return exprCodeInlineFunction(pParse, pFarg,
+ SQLITE_PTR_TO_INT(pDef->pUserData), target);
+ }else if( pDef->funcFlags & (SQLITE_FUNC_DIRECT|SQLITE_FUNC_UNSAFE) ){
+ sqlite3ExprFunctionUsable(pParse, pExpr, pDef);
}
- /* The UNLIKELY() function is a no-op. The result is the value
- ** of the first argument.
- */
- if( pDef->funcFlags & SQLITE_FUNC_UNLIKELY ){
- assert( nFarg>=1 );
- return sqlite3ExprCodeTarget(pParse, pFarg->a[0].pExpr, target);
- }
-
-#ifdef SQLITE_DEBUG
- /* The AFFINITY() function evaluates to a string that describes
- ** the type affinity of the argument. This is used for testing of
- ** the SQLite type logic.
- */
- if( pDef->funcFlags & SQLITE_FUNC_AFFINITY ){
- const char *azAff[] = { "blob", "text", "numeric", "integer", "real" };
- char aff;
- assert( nFarg==1 );
- aff = sqlite3ExprAffinity(pFarg->a[0].pExpr);
- sqlite3VdbeLoadString(v, target,
- (aff<=SQLITE_AFF_NONE) ? "none" : azAff[aff-SQLITE_AFF_BLOB]);
- return target;
- }
-#endif
-
for(i=0; ia[i].pExpr) ){
testcase( i==31 );
@@ -106907,7 +103921,7 @@ expr_code_doover:
assert( SQLITE_FUNC_LENGTH==OPFLAG_LENGTHARG );
assert( SQLITE_FUNC_TYPEOF==OPFLAG_TYPEOFARG );
testcase( pDef->funcFlags & OPFLAG_LENGTHARG );
- pFarg->a[0].pExpr->op2 =
+ pFarg->a[0].pExpr->op2 =
pDef->funcFlags & (OPFLAG_LENGTHARG|OPFLAG_TYPEOFARG);
}
}
@@ -106926,7 +103940,7 @@ expr_code_doover:
** see if it is a column in a virtual table. This is done because
** the left operand of infix functions (the operand we want to
** control overloading) ends up as the second argument to the
- ** function. The expression "A glob B" is equivalent to
+ ** function. The expression "A glob B" is equivalent to
** "glob(B,A). We want to use the A in "A glob B" to test
** for function overloading. But we use the B term in "glob(B,A)".
*/
@@ -106937,7 +103951,7 @@ expr_code_doover:
}
#endif
if( pDef->funcFlags & SQLITE_FUNC_NEEDCOLL ){
- if( !pColl ) pColl = db->pDfltColl;
+ if( !pColl ) pColl = db->pDfltColl;
sqlite3VdbeAddOp4(v, OP_CollSeq, 0, 0, 0, (char *)pColl, P4_COLLSEQ);
}
#ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC
@@ -106954,8 +103968,12 @@ expr_code_doover:
sqlite3VdbeAddFunctionCall(pParse, constMask, r1, target, nFarg,
pDef, pExpr->op2);
}
- if( nFarg && constMask==0 ){
- sqlite3ReleaseTempRange(pParse, r1, nFarg);
+ if( nFarg ){
+ if( constMask==0 ){
+ sqlite3ReleaseTempRange(pParse, r1, nFarg);
+ }else{
+ sqlite3VdbeReleaseRegisters(pParse, r1, nFarg, constMask, 1);
+ }
}
return target;
}
@@ -106965,7 +103983,9 @@ expr_code_doover:
int nCol;
testcase( op==TK_EXISTS );
testcase( op==TK_SELECT );
- if( op==TK_SELECT && (nCol = pExpr->x.pSelect->pEList->nExpr)!=1 ){
+ if( pParse->db->mallocFailed ){
+ return 0;
+ }else if( op==TK_SELECT && (nCol = pExpr->x.pSelect->pEList->nExpr)!=1 ){
sqlite3SubselectError(pParse, nCol, 1);
}else{
return sqlite3CodeSubselect(pParse, pExpr);
@@ -107016,7 +104036,7 @@ expr_code_doover:
return target;
}
case TK_SPAN:
- case TK_COLLATE:
+ case TK_COLLATE:
case TK_UPLUS: {
pExpr = pExpr->pLeft;
goto expr_code_doover; /* 2018-04-28: Prevent deep recursion. OSSFuzz. */
@@ -107032,7 +104052,7 @@ expr_code_doover:
**
** The expression is implemented using an OP_Param opcode. The p1
** parameter is set to 0 for an old.rowid reference, or to (i+1)
- ** to reference another column of the old.* pseudo-table, where
+ ** to reference another column of the old.* pseudo-table, where
** i is the index of the column. For a new.rowid reference, p1 is
** set to (n+1), where n is the number of columns in each pseudo-table.
** For a reference to any other column in the new.* pseudo-table, p1
@@ -107046,12 +104066,12 @@ expr_code_doover:
**
** p1==0 -> old.rowid p1==3 -> new.rowid
** p1==1 -> old.a p1==4 -> new.a
- ** p1==2 -> old.b p1==5 -> new.b
+ ** p1==2 -> old.b p1==5 -> new.b
*/
Table *pTab = pExpr->y.pTab;
int iCol = pExpr->iColumn;
- int p1 = pExpr->iTable * (pTab->nCol+1) + 1
- + (iCol>=0 ? sqlite3TableColumnToStorage(pTab, iCol) : -1);
+ int p1 = pExpr->iTable * (pTab->nCol+1) + 1
+ + sqlite3TableColumnToStorage(pTab, iCol);
assert( pExpr->iTable==0 || pExpr->iTable==1 );
assert( iCol>=-1 && iColnCol );
@@ -107125,7 +104145,7 @@ expr_code_doover:
** or if there is no matching Ei, the ELSE term Y, or if there is
** no ELSE term, NULL.
*/
- default: assert( op==TK_CASE ); {
+ case TK_CASE: {
int endLabel; /* GOTO label for end of CASE stmt */
int nextCase; /* GOTO label for next WHEN clause */
int nExpr; /* 2x number of WHEN terms */
@@ -107184,17 +104204,18 @@ expr_code_doover:
sqlite3VdbeAddOp2(v, OP_Null, 0, target);
}
sqlite3ExprDelete(db, pDel);
+ setDoNotMergeFlagOnCopy(v);
sqlite3VdbeResolveLabel(v, endLabel);
break;
}
#ifndef SQLITE_OMIT_TRIGGER
case TK_RAISE: {
- assert( pExpr->affExpr==OE_Rollback
+ assert( pExpr->affExpr==OE_Rollback
|| pExpr->affExpr==OE_Abort
|| pExpr->affExpr==OE_Fail
|| pExpr->affExpr==OE_Ignore
);
- if( !pParse->pTriggerTab ){
+ if( !pParse->pTriggerTab && !pParse->nested ){
sqlite3ErrorMsg(pParse,
"RAISE() may only be used within a trigger-program");
return 0;
@@ -107208,8 +104229,9 @@ expr_code_doover:
v, OP_Halt, SQLITE_OK, OE_Ignore, 0, pExpr->u.zToken,0);
VdbeCoverage(v);
}else{
- sqlite3HaltConstraint(pParse, SQLITE_CONSTRAINT_TRIGGER,
- pExpr->affExpr, pExpr->u.zToken, 0, 0);
+ sqlite3HaltConstraint(pParse,
+ pParse->pTriggerTab ? SQLITE_CONSTRAINT_TRIGGER : SQLITE_ERROR,
+ pExpr->affExpr, pExpr->u.zToken, 0, 0);
}
break;
@@ -107222,15 +104244,23 @@ expr_code_doover:
}
/*
-** Factor out the code of the given expression to initialization time.
+** Generate code that will evaluate expression pExpr just one time
+** per prepared statement execution.
+**
+** If the expression uses functions (that might throw an exception) then
+** guard them with an OP_Once opcode to ensure that the code is only executed
+** once. If no functions are involved, then factor the code out and put it at
+** the end of the prepared statement in the initialization section.
**
** If regDest>=0 then the result is always stored in that register and the
-** result is not reusable. If regDest<0 then this routine is free to
-** store the value whereever it wants. The register where the expression
-** is stored is returned. When regDest<0, two identical expressions will
-** code to the same register.
+** result is not reusable. If regDest<0 then this routine is free to
+** store the value whereever it wants. The register where the expression
+** is stored is returned. When regDest<0, two identical expressions might
+** code to the same register, if they do not contain function calls and hence
+** are factored out into the initialization section at the end of the
+** prepared statement.
*/
-SQLITE_PRIVATE int sqlite3ExprCodeAtInit(
+SQLITE_PRIVATE int sqlite3ExprCodeRunJustOnce(
Parse *pParse, /* Parsing context */
Expr *pExpr, /* The expression to code when the VDBE initializes */
int regDest /* Store the value in this register */
@@ -107248,14 +104278,29 @@ SQLITE_PRIVATE int sqlite3ExprCodeAtInit(
}
}
pExpr = sqlite3ExprDup(pParse->db, pExpr, 0);
- p = sqlite3ExprListAppend(pParse, p, pExpr);
- if( p ){
- struct ExprList_item *pItem = &p->a[p->nExpr-1];
- pItem->reusable = regDest<0;
- if( regDest<0 ) regDest = ++pParse->nMem;
- pItem->u.iConstExprReg = regDest;
+ if( pExpr!=0 && ExprHasProperty(pExpr, EP_HasFunc) ){
+ Vdbe *v = pParse->pVdbe;
+ int addr;
+ assert( v );
+ addr = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v);
+ pParse->okConstFactor = 0;
+ if( !pParse->db->mallocFailed ){
+ if( regDest<0 ) regDest = ++pParse->nMem;
+ sqlite3ExprCode(pParse, pExpr, regDest);
+ }
+ pParse->okConstFactor = 1;
+ sqlite3ExprDelete(pParse->db, pExpr);
+ sqlite3VdbeJumpHere(v, addr);
+ }else{
+ p = sqlite3ExprListAppend(pParse, p, pExpr);
+ if( p ){
+ struct ExprList_item *pItem = &p->a[p->nExpr-1];
+ pItem->reusable = regDest<0;
+ if( regDest<0 ) regDest = ++pParse->nMem;
+ pItem->u.iConstExprReg = regDest;
+ }
+ pParse->pConstExpr = p;
}
- pParse->pConstExpr = p;
return regDest;
}
@@ -107280,7 +104325,7 @@ SQLITE_PRIVATE int sqlite3ExprCodeTemp(Parse *pParse, Expr *pExpr, int *pReg){
&& sqlite3ExprIsConstantNotJoin(pExpr)
){
*pReg = 0;
- r2 = sqlite3ExprCodeAtInit(pParse, pExpr, -1);
+ r2 = sqlite3ExprCodeRunJustOnce(pParse, pExpr, -1);
}else{
int r1 = sqlite3GetTempReg(pParse);
r2 = sqlite3ExprCodeTarget(pParse, pExpr, r1);
@@ -107302,11 +104347,19 @@ SQLITE_PRIVATE int sqlite3ExprCodeTemp(Parse *pParse, Expr *pExpr, int *pReg){
SQLITE_PRIVATE void sqlite3ExprCode(Parse *pParse, Expr *pExpr, int target){
int inReg;
+ assert( pExpr==0 || !ExprHasVVAProperty(pExpr,EP_Immutable) );
assert( target>0 && target<=pParse->nMem );
- inReg = sqlite3ExprCodeTarget(pParse, pExpr, target);
assert( pParse->pVdbe!=0 || pParse->db->mallocFailed );
- if( inReg!=target && pParse->pVdbe ){
- sqlite3VdbeAddOp2(pParse->pVdbe, OP_SCopy, inReg, target);
+ if( pParse->pVdbe==0 ) return;
+ inReg = sqlite3ExprCodeTarget(pParse, pExpr, target);
+ if( inReg!=target ){
+ u8 op;
+ if( ExprHasProperty(pExpr,EP_Subquery) ){
+ op = OP_Copy;
+ }else{
+ op = OP_SCopy;
+ }
+ sqlite3VdbeAddOp2(pParse->pVdbe, op, inReg, target);
}
}
@@ -107330,9 +104383,9 @@ SQLITE_PRIVATE void sqlite3ExprCodeCopy(Parse *pParse, Expr *pExpr, int target){
*/
SQLITE_PRIVATE void sqlite3ExprCodeFactorable(Parse *pParse, Expr *pExpr, int target){
if( pParse->okConstFactor && sqlite3ExprIsConstantNotJoin(pExpr) ){
- sqlite3ExprCodeAtInit(pParse, pExpr, target);
+ sqlite3ExprCodeRunJustOnce(pParse, pExpr, target);
}else{
- sqlite3ExprCode(pParse, pExpr, target);
+ sqlite3ExprCodeCopy(pParse, pExpr, target);
}
}
@@ -107390,7 +104443,7 @@ SQLITE_PRIVATE int sqlite3ExprCodeExprList(
}else if( (flags & SQLITE_ECEL_FACTOR)!=0
&& sqlite3ExprIsConstantNotJoin(pExpr)
){
- sqlite3ExprCodeAtInit(pParse, pExpr, target+i);
+ sqlite3ExprCodeRunJustOnce(pParse, pExpr, target+i);
}else{
int inReg = sqlite3ExprCodeTarget(pParse, pExpr, target+i);
if( inReg!=target+i ){
@@ -107399,6 +104452,7 @@ SQLITE_PRIVATE int sqlite3ExprCodeExprList(
&& (pOp=sqlite3VdbeGetOp(v, -1))->opcode==OP_Copy
&& pOp->p1+pOp->p3+1==inReg
&& pOp->p2+pOp->p3+1==target+i
+ && pOp->p5==0 /* The do-not-merge flag must be clear */
){
pOp->p3++;
}else{
@@ -107415,7 +104469,7 @@ SQLITE_PRIVATE int sqlite3ExprCodeExprList(
**
** x BETWEEN y AND z
**
-** The above is equivalent to
+** The above is equivalent to
**
** x>=y AND x<=z
**
@@ -107512,6 +104566,7 @@ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int
assert( jumpIfNull==SQLITE_JUMPIFNULL || jumpIfNull==0 );
if( NEVER(v==0) ) return; /* Existence of VDBE checked by caller */
if( NEVER(pExpr==0) ) return; /* No way this can happen */
+ assert( !ExprHasVVAProperty(pExpr, EP_Immutable) );
op = pExpr->op;
switch( op ){
case TK_AND:
@@ -107561,7 +104616,7 @@ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int
testcase( op==TK_ISNOT );
op = (op==TK_IS) ? TK_EQ : TK_NE;
jumpIfNull = SQLITE_NULLEQ;
- /* Fall thru */
+ /* no break */ deliberate_fall_through
case TK_LT:
case TK_LE:
case TK_GT:
@@ -107631,7 +104686,7 @@ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int
}
}
sqlite3ReleaseTempReg(pParse, regFree1);
- sqlite3ReleaseTempReg(pParse, regFree2);
+ sqlite3ReleaseTempReg(pParse, regFree2);
}
/*
@@ -107653,6 +104708,7 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int
assert( jumpIfNull==SQLITE_JUMPIFNULL || jumpIfNull==0 );
if( NEVER(v==0) ) return; /* Existence of VDBE checked by caller */
if( pExpr==0 ) return;
+ assert( !ExprHasVVAProperty(pExpr,EP_Immutable) );
/* The value of pExpr->op and op are related as follows:
**
@@ -107736,7 +104792,7 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int
testcase( pExpr->op==TK_ISNOT );
op = (pExpr->op==TK_IS) ? TK_NE : TK_EQ;
jumpIfNull = SQLITE_NULLEQ;
- /* Fall thru */
+ /* no break */ deliberate_fall_through
case TK_LT:
case TK_LE:
case TK_GT:
@@ -107790,7 +104846,7 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int
}
#endif
default: {
- default_expr:
+ default_expr:
if( ExprAlwaysFalse(pExpr) ){
sqlite3VdbeGoto(v, dest);
}else if( ExprAlwaysTrue(pExpr) ){
@@ -107840,7 +104896,7 @@ static int exprCompareVariable(Parse *pParse, Expr *pVar, Expr *pExpr){
int res = 0;
int iVar;
sqlite3_value *pL, *pR = 0;
-
+
sqlite3ValueFromExpr(pParse->db, pExpr, SQLITE_UTF8, SQLITE_AFF_BLOB, &pR);
if( pR ){
iVar = pVar->iColumn;
@@ -107882,9 +104938,9 @@ static int exprCompareVariable(Parse *pParse, Expr *pVar, Expr *pExpr){
** an incorrect 0 or 1 could lead to a malfunction.
**
** If pParse is not NULL then TK_VARIABLE terms in pA with bindings in
-** pParse->pReprepare can be matched against literals in pB. The
+** pParse->pReprepare can be matched against literals in pB. The
** pParse->pVdbe->expmask bitmask is updated for each variable referenced.
-** If pParse is NULL (the normal case) then any TK_VARIABLE term in
+** If pParse is NULL (the normal case) then any TK_VARIABLE term in
** Argument pParse should normally be NULL. If it is not NULL and pA or
** pB causes a return value of 2.
*/
@@ -107936,7 +104992,7 @@ SQLITE_PRIVATE int sqlite3ExprCompare(Parse *pParse, Expr *pA, Expr *pB, int iTa
}
if( (pA->flags & (EP_Distinct|EP_Commuted))
!= (pB->flags & (EP_Distinct|EP_Commuted)) ) return 2;
- if( (combinedFlags & EP_TokenOnly)==0 ){
+ if( ALWAYS((combinedFlags & EP_TokenOnly)==0) ){
if( combinedFlags & EP_xIsSelect ) return 2;
if( (combinedFlags & EP_FixedCol)==0
&& sqlite3ExprCompare(pParse, pA->pLeft, pB->pLeft, iTab) ) return 2;
@@ -107944,24 +105000,10 @@ SQLITE_PRIVATE int sqlite3ExprCompare(Parse *pParse, Expr *pA, Expr *pB, int iTa
if( sqlite3ExprListCompare(pA->x.pList, pB->x.pList, iTab) ) return 2;
if( pA->op!=TK_STRING
&& pA->op!=TK_TRUEFALSE
- && (combinedFlags & EP_Reduced)==0
+ && ALWAYS((combinedFlags & EP_Reduced)==0)
){
if( pA->iColumn!=pB->iColumn ) return 2;
- if( pA->op2!=pB->op2 ){
- if( pA->op==TK_TRUTH ) return 2;
- if( pA->op==TK_FUNCTION && iTab<0 ){
- /* Ex: CREATE TABLE t1(a CHECK( aop2!=pB->op2 && pA->op==TK_TRUTH ) return 2;
if( pA->op!=TK_IN && pA->iTable!=pB->iTable && pA->iTable!=iTab ){
return 2;
}
@@ -107971,8 +105013,9 @@ SQLITE_PRIVATE int sqlite3ExprCompare(Parse *pParse, Expr *pA, Expr *pB, int iTa
}
/*
-** Compare two ExprList objects. Return 0 if they are identical and
-** non-zero if they differ in any way.
+** Compare two ExprList objects. Return 0 if they are identical, 1
+** if they are certainly different, or 2 if it is not possible to
+** determine if they are identical or not.
**
** If any subelement of pB has Expr.iTable==(-1) then it is allowed
** to compare equal to an equivalent element in pA with Expr.iTable==iTab.
@@ -107991,10 +105034,11 @@ SQLITE_PRIVATE int sqlite3ExprListCompare(ExprList *pA, ExprList *pB, int iTab){
if( pA==0 || pB==0 ) return 1;
if( pA->nExpr!=pB->nExpr ) return 1;
for(i=0; inExpr; i++){
+ int res;
Expr *pExprA = pA->a[i].pExpr;
Expr *pExprB = pB->a[i].pExpr;
if( pA->a[i].sortFlags!=pB->a[i].sortFlags ) return 1;
- if( sqlite3ExprCompare(0, pExprA, pExprB, iTab) ) return 1;
+ if( (res = sqlite3ExprCompare(0, pExprA, pExprB, iTab)) ) return res;
}
return 0;
}
@@ -108057,16 +105101,16 @@ static int exprImpliesNotNull(
case TK_MINUS:
case TK_BITOR:
case TK_LSHIFT:
- case TK_RSHIFT:
- case TK_CONCAT:
+ case TK_RSHIFT:
+ case TK_CONCAT:
seenNot = 1;
- /* Fall thru */
+ /* no break */ deliberate_fall_through
case TK_STAR:
case TK_REM:
case TK_BITAND:
case TK_SLASH: {
if( exprImpliesNotNull(pParse, p->pRight, pNN, iTab, seenNot) ) return 1;
- /* Fall thru into the next case */
+ /* no break */ deliberate_fall_through
}
case TK_SPAN:
case TK_COLLATE:
@@ -108103,9 +105147,9 @@ static int exprImpliesNotNull(
** When comparing TK_COLUMN nodes between pE1 and pE2, if pE2 has
** Expr.iTable<0 then assume a table number given by iTab.
**
-** If pParse is not NULL, then the values of bound variables in pE1 are
+** If pParse is not NULL, then the values of bound variables in pE1 are
** compared against literal values in pE2 and pParse->pVdbe->expmask is
-** modified to record which bound variables are referenced. If pParse
+** modified to record which bound variables are referenced. If pParse
** is NULL, then false will be returned if pE1 contains any bound variables.
**
** When in doubt, return false. Returning true might give a performance
@@ -108173,16 +105217,20 @@ static int impliesNotNullRow(Walker *pWalker, Expr *pExpr){
return WRC_Prune;
case TK_AND:
- assert( pWalker->eCode==0 );
- sqlite3WalkExpr(pWalker, pExpr->pLeft);
- if( pWalker->eCode ){
- pWalker->eCode = 0;
- sqlite3WalkExpr(pWalker, pExpr->pRight);
+ if( pWalker->eCode==0 ){
+ sqlite3WalkExpr(pWalker, pExpr->pLeft);
+ if( pWalker->eCode ){
+ pWalker->eCode = 0;
+ sqlite3WalkExpr(pWalker, pExpr->pRight);
+ }
}
return WRC_Prune;
case TK_BETWEEN:
- sqlite3WalkExpr(pWalker, pExpr->pLeft);
+ if( sqlite3WalkExpr(pWalker, pExpr->pLeft)==WRC_Abort ){
+ assert( pWalker->eCode );
+ return WRC_Abort;
+ }
return WRC_Prune;
/* Virtual tables are allowed to use constraints like x=NULL. So
@@ -108193,19 +105241,26 @@ static int impliesNotNullRow(Walker *pWalker, Expr *pExpr){
case TK_LT:
case TK_LE:
case TK_GT:
- case TK_GE:
+ case TK_GE: {
+ Expr *pLeft = pExpr->pLeft;
+ Expr *pRight = pExpr->pRight;
testcase( pExpr->op==TK_EQ );
testcase( pExpr->op==TK_NE );
testcase( pExpr->op==TK_LT );
testcase( pExpr->op==TK_LE );
testcase( pExpr->op==TK_GT );
testcase( pExpr->op==TK_GE );
- if( (pExpr->pLeft->op==TK_COLUMN && IsVirtual(pExpr->pLeft->y.pTab))
- || (pExpr->pRight->op==TK_COLUMN && IsVirtual(pExpr->pRight->y.pTab))
+ /* The y.pTab=0 assignment in wherecode.c always happens after the
+ ** impliesNotNullRow() test */
+ if( (pLeft->op==TK_COLUMN && ALWAYS(pLeft->y.pTab!=0)
+ && IsVirtual(pLeft->y.pTab))
+ || (pRight->op==TK_COLUMN && ALWAYS(pRight->y.pTab!=0)
+ && IsVirtual(pRight->y.pTab))
){
- return WRC_Prune;
+ return WRC_Prune;
}
-
+ /* no break */ deliberate_fall_through
+ }
default:
return WRC_Continue;
}
@@ -108267,7 +105322,7 @@ struct IdxCover {
};
/*
-** Check to see if there are references to columns in table
+** Check to see if there are references to columns in table
** pWalker->u.pIdxCover->iCur can be satisfied using the index
** pWalker->u.pIdxCover->pIdx.
*/
@@ -108311,26 +105366,42 @@ SQLITE_PRIVATE int sqlite3ExprCoveredByIndex(
/*
** An instance of the following structure is used by the tree walker
-** to count references to table columns in the arguments of an
+** to count references to table columns in the arguments of an
** aggregate function, in order to implement the
** sqlite3FunctionThisSrc() routine.
*/
struct SrcCount {
SrcList *pSrc; /* One particular FROM clause in a nested query */
+ int iSrcInner; /* Smallest cursor number in this context */
int nThis; /* Number of references to columns in pSrcList */
int nOther; /* Number of references to columns in other FROM clauses */
};
+/*
+** xSelect callback for sqlite3FunctionUsesThisSrc(). If this is the first
+** SELECT with a FROM clause encountered during this iteration, set
+** SrcCount.iSrcInner to the cursor number of the leftmost object in
+** the FROM cause.
+*/
+static int selectSrcCount(Walker *pWalker, Select *pSel){
+ struct SrcCount *p = pWalker->u.pSrcCount;
+ if( p->iSrcInner==0x7FFFFFFF && ALWAYS(pSel->pSrc) && pSel->pSrc->nSrc ){
+ pWalker->u.pSrcCount->iSrcInner = pSel->pSrc->a[0].iCursor;
+ }
+ return WRC_Continue;
+}
+
/*
** Count the number of references to columns.
*/
static int exprSrcCount(Walker *pWalker, Expr *pExpr){
- /* The NEVER() on the second term is because sqlite3FunctionUsesThisSrc()
- ** is always called before sqlite3ExprAnalyzeAggregates() and so the
- ** TK_COLUMNs have not yet been converted into TK_AGG_COLUMN. If
- ** sqlite3FunctionUsesThisSrc() is used differently in the future, the
- ** NEVER() will need to be removed. */
- if( pExpr->op==TK_COLUMN || NEVER(pExpr->op==TK_AGG_COLUMN) ){
+ /* There was once a NEVER() on the second term on the grounds that
+ ** sqlite3FunctionUsesThisSrc() was always called before
+ ** sqlite3ExprAnalyzeAggregates() and so the TK_COLUMNs have not yet
+ ** been converted into TK_AGG_COLUMN. But this is no longer true due
+ ** to window functions - sqlite3WindowRewrite() may now indirectly call
+ ** FunctionUsesThisSrc() when creating a new sub-select. */
+ if( pExpr->op==TK_COLUMN || pExpr->op==TK_AGG_COLUMN ){
int i;
struct SrcCount *p = pWalker->u.pSrcCount;
SrcList *pSrc = p->pSrc;
@@ -108340,7 +105411,7 @@ static int exprSrcCount(Walker *pWalker, Expr *pExpr){
}
if( inThis++;
- }else if( nSrc==0 || pExpr->iTablea[0].iCursor ){
+ }else if( pExpr->iTableiSrcInner ){
/* In a well-formed parse tree (no name resolution errors),
** TK_COLUMN nodes with smaller Expr.iTable values are in an
** outer context. Those are the only ones to count as "other" */
@@ -108362,15 +105433,79 @@ SQLITE_PRIVATE int sqlite3FunctionUsesThisSrc(Expr *pExpr, SrcList *pSrcList){
assert( pExpr->op==TK_AGG_FUNCTION );
memset(&w, 0, sizeof(w));
w.xExprCallback = exprSrcCount;
- w.xSelectCallback = sqlite3SelectWalkNoop;
+ w.xSelectCallback = selectSrcCount;
w.u.pSrcCount = &cnt;
cnt.pSrc = pSrcList;
+ cnt.iSrcInner = (pSrcList&&pSrcList->nSrc)?pSrcList->a[0].iCursor:0x7FFFFFFF;
cnt.nThis = 0;
cnt.nOther = 0;
sqlite3WalkExprList(&w, pExpr->x.pList);
+#ifndef SQLITE_OMIT_WINDOWFUNC
+ if( ExprHasProperty(pExpr, EP_WinFunc) ){
+ sqlite3WalkExpr(&w, pExpr->y.pWin->pFilter);
+ }
+#endif
return cnt.nThis>0 || cnt.nOther==0;
}
+/*
+** This is a Walker expression node callback.
+**
+** For Expr nodes that contain pAggInfo pointers, make sure the AggInfo
+** object that is referenced does not refer directly to the Expr. If
+** it does, make a copy. This is done because the pExpr argument is
+** subject to change.
+**
+** The copy is stored on pParse->pConstExpr with a register number of 0.
+** This will cause the expression to be deleted automatically when the
+** Parse object is destroyed, but the zero register number means that it
+** will not generate any code in the preamble.
+*/
+static int agginfoPersistExprCb(Walker *pWalker, Expr *pExpr){
+ if( ALWAYS(!ExprHasProperty(pExpr, EP_TokenOnly|EP_Reduced))
+ && pExpr->pAggInfo!=0
+ ){
+ AggInfo *pAggInfo = pExpr->pAggInfo;
+ int iAgg = pExpr->iAgg;
+ Parse *pParse = pWalker->pParse;
+ sqlite3 *db = pParse->db;
+ assert( pExpr->op==TK_AGG_COLUMN || pExpr->op==TK_AGG_FUNCTION );
+ if( pExpr->op==TK_AGG_COLUMN ){
+ assert( iAgg>=0 && iAggnColumn );
+ if( pAggInfo->aCol[iAgg].pCExpr==pExpr ){
+ pExpr = sqlite3ExprDup(db, pExpr, 0);
+ if( pExpr ){
+ pAggInfo->aCol[iAgg].pCExpr = pExpr;
+ pParse->pConstExpr =
+ sqlite3ExprListAppend(pParse, pParse->pConstExpr, pExpr);
+ }
+ }
+ }else{
+ assert( iAgg>=0 && iAggnFunc );
+ if( pAggInfo->aFunc[iAgg].pFExpr==pExpr ){
+ pExpr = sqlite3ExprDup(db, pExpr, 0);
+ if( pExpr ){
+ pAggInfo->aFunc[iAgg].pFExpr = pExpr;
+ pParse->pConstExpr =
+ sqlite3ExprListAppend(pParse, pParse->pConstExpr, pExpr);
+ }
+ }
+ }
+ }
+ return WRC_Continue;
+}
+
+/*
+** Initialize a Walker object so that will persist AggInfo entries referenced
+** by the tree that is walked.
+*/
+SQLITE_PRIVATE void sqlite3AggInfoPersistWalkerInit(Walker *pWalker, Parse *pParse){
+ memset(pWalker, 0, sizeof(*pWalker));
+ pWalker->pParse = pParse;
+ pWalker->xExprCallback = agginfoPersistExprCb;
+ pWalker->xSelectCallback = sqlite3SelectWalkNoop;
+}
+
/*
** Add a new element to the pAggInfo->aCol[] array. Return the index of
** the new element. Return a negative number if malloc fails.
@@ -108385,7 +105520,7 @@ static int addAggInfoColumn(sqlite3 *db, AggInfo *pInfo){
&i
);
return i;
-}
+}
/*
** Add a new element to the pAggInfo->aFunc[] array. Return the index of
@@ -108394,14 +105529,14 @@ static int addAggInfoColumn(sqlite3 *db, AggInfo *pInfo){
static int addAggInfoFunc(sqlite3 *db, AggInfo *pInfo){
int i;
pInfo->aFunc = sqlite3ArrayAllocate(
- db,
+ db,
pInfo->aFunc,
sizeof(pInfo->aFunc[0]),
&pInfo->nFunc,
&i
);
return i;
-}
+}
/*
** This is the xExprCallback for a tree walker. It is used to
@@ -108430,7 +105565,7 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){
assert( !ExprHasProperty(pExpr, EP_TokenOnly|EP_Reduced) );
if( pExpr->iTable==pItem->iCursor ){
/* If we reach this point, it means that pExpr refers to a table
- ** that is in the FROM clause of the aggregate query.
+ ** that is in the FROM clause of the aggregate query.
**
** Make an entry for the column in pAggInfo->aCol[] if there
** is not an entry there already.
@@ -108444,7 +105579,7 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){
}
}
if( (k>=pAggInfo->nColumn)
- && (k = addAggInfoColumn(pParse->db, pAggInfo))>=0
+ && (k = addAggInfoColumn(pParse->db, pAggInfo))>=0
){
pCol = &pAggInfo->aCol[k];
pCol->pTab = pExpr->y.pTab;
@@ -108452,7 +105587,7 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){
pCol->iColumn = pExpr->iColumn;
pCol->iMem = ++pParse->nMem;
pCol->iSorterColumn = -1;
- pCol->pExpr = pExpr;
+ pCol->pCExpr = pExpr;
if( pAggInfo->pGroupBy ){
int j, n;
ExprList *pGB = pAggInfo->pGroupBy;
@@ -108490,12 +105625,12 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){
if( (pNC->ncFlags & NC_InAggFunc)==0
&& pWalker->walkerDepth==pExpr->op2
){
- /* Check to see if pExpr is a duplicate of another aggregate
+ /* Check to see if pExpr is a duplicate of another aggregate
** function that is already in the pAggInfo structure
*/
struct AggInfo_func *pItem = pAggInfo->aFunc;
for(i=0; inFunc; i++, pItem++){
- if( sqlite3ExprCompare(0, pItem->pExpr, pExpr, -1)==0 ){
+ if( sqlite3ExprCompare(0, pItem->pFExpr, pExpr, -1)==0 ){
break;
}
}
@@ -108507,11 +105642,11 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){
if( i>=0 ){
assert( !ExprHasProperty(pExpr, EP_xIsSelect) );
pItem = &pAggInfo->aFunc[i];
- pItem->pExpr = pExpr;
+ pItem->pFExpr = pExpr;
pItem->iMem = ++pParse->nMem;
assert( !ExprHasProperty(pExpr, EP_IntValue) );
pItem->pFunc = sqlite3FindFunction(pParse->db,
- pExpr->u.zToken,
+ pExpr->u.zToken,
pExpr->x.pList ? pExpr->x.pList->nExpr : 0, enc, 0);
if( pExpr->flags & EP_Distinct ){
pItem->iDistinct = pParse->nTab++;
@@ -108534,15 +105669,6 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){
}
return WRC_Continue;
}
-static int analyzeAggregatesInSelect(Walker *pWalker, Select *pSelect){
- UNUSED_PARAMETER(pSelect);
- pWalker->walkerDepth++;
- return WRC_Continue;
-}
-static void analyzeAggregatesInSelectEnd(Walker *pWalker, Select *pSelect){
- UNUSED_PARAMETER(pSelect);
- pWalker->walkerDepth--;
-}
/*
** Analyze the pExpr expression looking for aggregate functions and
@@ -108556,8 +105682,8 @@ static void analyzeAggregatesInSelectEnd(Walker *pWalker, Select *pSelect){
SQLITE_PRIVATE void sqlite3ExprAnalyzeAggregates(NameContext *pNC, Expr *pExpr){
Walker w;
w.xExprCallback = analyzeAggregate;
- w.xSelectCallback = analyzeAggregatesInSelect;
- w.xSelectCallback2 = analyzeAggregatesInSelectEnd;
+ w.xSelectCallback = sqlite3WalkerDepthIncrease;
+ w.xSelectCallback2 = sqlite3WalkerDepthDecrease;
w.walkerDepth = 0;
w.u.pNC = pNC;
w.pParse = 0;
@@ -108596,8 +105722,11 @@ SQLITE_PRIVATE int sqlite3GetTempReg(Parse *pParse){
** purpose.
*/
SQLITE_PRIVATE void sqlite3ReleaseTempReg(Parse *pParse, int iReg){
- if( iReg && pParse->nTempRegaTempReg) ){
- pParse->aTempReg[pParse->nTempReg++] = iReg;
+ if( iReg ){
+ sqlite3VdbeReleaseRegisters(pParse, iReg, 1, 0, 0);
+ if( pParse->nTempReg
| |