605 lines
20 KiB
C
605 lines
20 KiB
C
/*++
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Copyright (c) 1991 Microsoft Corporation
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Module Name:
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NtfsData.h
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Abstract:
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This module declares the global data used by the Ntfs file system.
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Author:
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Gary Kimura [GaryKi] 28-Dec-1989
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Revision History:
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--*/
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#ifndef _NTFSDATA_
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#define _NTFSDATA_
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//
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// The following are used to determine what level of protection to attach
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// to system files and attributes.
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//
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extern BOOLEAN NtfsProtectSystemFiles;
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extern BOOLEAN NtfsProtectSystemAttributes;
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//
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// Performance statistics
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//
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extern ULONG NtfsMaxDelayedCloseCount;
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extern ULONG NtfsMinDelayedCloseCount;
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extern ULONG NtfsCleanCheckpoints;
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extern ULONG NtfsPostRequests;
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//
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// The global fsd data record
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//
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extern NTFS_DATA NtfsData;
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//
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// Semaphore to synchronize creation of stream files.
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//
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extern FAST_MUTEX StreamFileCreationFastMutex;
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//
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// A mutex and queue of NTFS MCBS that will be freed
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// if we reach over a certain threshold
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//
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extern FAST_MUTEX NtfsMcbFastMutex;
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extern LIST_ENTRY NtfsMcbLruQueue;
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extern ULONG NtfsMcbHighWaterMark;
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extern ULONG NtfsMcbLowWaterMark;
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extern ULONG NtfsMcbCurrentLevel;
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extern BOOLEAN NtfsMcbCleanupInProgress;
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extern WORK_QUEUE_ITEM NtfsMcbWorkItem;
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//
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// The following are global large integer constants used throughout ntfs
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// We declare the actual name using Ntfs prefixes to avoid any linking
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// conflicts but internally in the file system we'll use smaller Li prefixes
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// to denote the values.
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//
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extern LARGE_INTEGER NtfsLarge0;
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extern LARGE_INTEGER NtfsLarge1;
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extern LONGLONG NtfsLastAccess;
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#define Li0 (NtfsLarge0)
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#define Li1 (NtfsLarge1)
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#define MAXULONGLONG (0xffffffffffffffff)
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#define UNUSED_LCN ((LONGLONG)(-1))
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//
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// The following fields are used to allocate nonpaged structures
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// using a lookaside list, and other fixed sized structures from a
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// small cache.
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//
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extern NPAGED_LOOKASIDE_LIST NtfsFileLockLookasideList;
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extern NPAGED_LOOKASIDE_LIST NtfsIoContextLookasideList;
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extern NPAGED_LOOKASIDE_LIST NtfsIrpContextLookasideList;
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extern NPAGED_LOOKASIDE_LIST NtfsKeventLookasideList;
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extern NPAGED_LOOKASIDE_LIST NtfsScbNonpagedLookasideList;
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extern NPAGED_LOOKASIDE_LIST NtfsScbSnapshotLookasideList;
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extern PAGED_LOOKASIDE_LIST NtfsCcbLookasideList;
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extern PAGED_LOOKASIDE_LIST NtfsCcbDataLookasideList;
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extern PAGED_LOOKASIDE_LIST NtfsDeallocatedRecordsLookasideList;
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extern PAGED_LOOKASIDE_LIST NtfsFcbDataLookasideList;
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extern PAGED_LOOKASIDE_LIST NtfsFcbIndexLookasideList;
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extern PAGED_LOOKASIDE_LIST NtfsIndexContextLookasideList;
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extern PAGED_LOOKASIDE_LIST NtfsLcbLookasideList;
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extern PAGED_LOOKASIDE_LIST NtfsNukemLookasideList;
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extern PAGED_LOOKASIDE_LIST NtfsScbDataLookasideList;
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//
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// This is the string for the name of the index allocation attributes.
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//
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extern UNICODE_STRING NtfsFileNameIndex;
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extern WCHAR NtfsFileNameIndexName[];
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//
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// This is the string for the attribute code for index allocation.
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// $INDEX_ALLOCATION.
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//
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extern UNICODE_STRING NtfsIndexAllocation;
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//
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// This is the string for the data attribute, $DATA.
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//
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extern UNICODE_STRING NtfsDataString;
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//
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// This strings are used for informational popups.
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//
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extern UNICODE_STRING NtfsSystemFiles[];
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//
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// This is the '.' string to use to lookup the parent entry.
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//
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extern UNICODE_STRING NtfsRootIndexString;
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//
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// This is the empty string. This can be used to pass a string with
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// no length.
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//
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extern UNICODE_STRING NtfsEmptyString;
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//
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// The following file references are used to identify system files.
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//
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extern FILE_REFERENCE MftFileReference;
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extern FILE_REFERENCE Mft2FileReference;
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extern FILE_REFERENCE LogFileReference;
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extern FILE_REFERENCE VolumeFileReference;
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extern FILE_REFERENCE RootIndexFileReference;
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extern FILE_REFERENCE BitmapFileReference;
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extern FILE_REFERENCE FirstUserFileReference;
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extern FILE_REFERENCE BootFileReference;
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//
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// The global structure used to contain our fast I/O callbacks
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//
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extern FAST_IO_DISPATCH NtfsFastIoDispatch;
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extern UCHAR BaadSignature[4];
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extern UCHAR IndexSignature[4];
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extern UCHAR FileSignature[4];
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extern UCHAR HoleSignature[4];
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extern UCHAR ChkdskSignature[4];
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//
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// Large Reserved Buffer Context
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//
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extern ULONG NtfsReservedInUse;
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extern PVOID NtfsReserved1;
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extern PVOID NtfsReserved2;
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extern ULONG NtfsReserved2Count;
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extern PVOID NtfsReserved3;
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extern PVOID NtfsReserved1Thread;
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extern PVOID NtfsReserved2Thread;
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extern PVOID NtfsReserved3Thread;
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extern PFCB NtfsReserved12Fcb;
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extern PFCB NtfsReserved3Fcb;
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extern PVOID NtfsReservedBufferThread;
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extern BOOLEAN NtfsBufferAllocationFailure;
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extern FAST_MUTEX NtfsReservedBufferMutex;
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extern ERESOURCE NtfsReservedBufferResource;
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extern LARGE_INTEGER NtfsShortDelay;
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#ifdef _CAIRO_
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extern FAST_MUTEX NtfsScavengerLock;
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extern PIRP_CONTEXT NtfsScavengerWorkList;
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extern BOOLEAN NtfsScavengerRunning;
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#endif // _CAIRO_
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#define LARGE_BUFFER_SIZE (0x10000)
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//
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// The following is the number of minutes for the last access increment
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//
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#define LAST_ACCESS_INCREMENT_MINUTES (60)
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//
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// Read ahead amount used for normal data files
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//
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#define READ_AHEAD_GRANULARITY (0x10000)
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//
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// Define maximum number of parallel Reads or Writes that will be generated
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// per one request.
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//
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#define NTFS_MAX_PARALLEL_IOS ((ULONG)8)
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//
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// Define a symbol which states the maximum number of runs that will be
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// added or deleted in one transaction per attribute. Note that the per-run
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// cost of deleting a run is 8-bytes in the BITMAP_RANGE, an average of
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// four bytes in the mapping array, and 16 bytes in the LCN_RANGE - for a total
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// of 28-bytes. Allocations do not log an LCN_RANGE, so their per-run cost is
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// 12 bytes. The worst problem is deleteing large fragmented files, where you
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// must add the cost of the rest of the log records for deleting all the attributes.
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//
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#define MAXIMUM_RUNS_AT_ONCE (128)
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//
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// Turn on pseudo-asserts if NTFS_FREE_ASSERTS is defined.
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//
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#if (!DBG && defined( NTFS_FREE_ASSERTS )) || defined( NTFSDBG )
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#undef ASSERT
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#undef ASSERTMSG
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#define ASSERT(exp) \
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((exp) ? TRUE : \
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(DbgPrint( "%s:%d %s\n",__FILE__,__LINE__,#exp ), \
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DbgBreakPoint(), \
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TRUE))
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#define ASSERTMSG(msg,exp) \
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((exp) ? TRUE : \
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(DbgPrint( "%s:%d %s %s\n",__FILE__,__LINE__,msg,#exp ), \
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DbgBreakPoint(), \
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TRUE))
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#endif
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//
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// The following debug macros are used in ntfs and defined in this module
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//
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// DebugTrace( Indent, Level, (DbgPrint list) );
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//
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// DebugUnwind( NonquotedString );
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//
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// DebugDoit( Statement );
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//
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// DbgDoit( Statement );
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//
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// The following assertion macros ensure that the indicated structure
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// is valid
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//
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// ASSERT_VCB( IN PVCB Vcb );
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// ASSERT_OPTIONAL_VCB( IN PVCB Vcb OPTIONAL );
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//
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// ASSERT_FCB( IN PFCB Fcb );
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// ASSERT_OPTIONAL_FCB( IN PFCB Fcb OPTIONAL );
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//
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// ASSERT_SCB( IN PSCB Scb );
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// ASSERT_OPTIONAL_SCB( IN PSCB Scb OPTIONAL );
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//
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// ASSERT_CCB( IN PSCB Ccb );
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// ASSERT_OPTIONAL_CCB( IN PSCB Ccb OPTIONAL );
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//
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// ASSERT_LCB( IN PLCB Lcb );
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// ASSERT_OPTIONAL_LCB( IN PLCB Lcb OPTIONAL );
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//
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// ASSERT_PREFIX_ENTRY( IN PPREFIX_ENTRY PrefixEntry );
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// ASSERT_OPTIONAL_PREFIX_ENTRY( IN PPREFIX_ENTRY PrefixEntry OPTIONAL );
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//
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// ASSERT_IRP_CONTEXT( IN PIRP_CONTEXT IrpContext );
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// ASSERT_OPTIONAL_IRP_CONTEXT( IN PIRP_CONTEXT IrpContext OPTIONAL );
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//
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// ASSERT_IRP( IN PIRP Irp );
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// ASSERT_OPTIONAL_IRP( IN PIRP Irp OPTIONAL );
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//
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// ASSERT_FILE_OBJECT( IN PFILE_OBJECT FileObject );
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// ASSERT_OPTIONAL_FILE_OBJECT( IN PFILE_OBJECT FileObject OPTIONAL );
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//
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// The following macros are used to check the current thread owns
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// the indicated resource
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//
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// ASSERT_EXCLUSIVE_RESOURCE( IN PERESOURCE Resource );
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//
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// ASSERT_SHARED_RESOURCE( IN PERESOURCE Resource );
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//
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// ASSERT_RESOURCE_NOT_MINE( IN PERESOURCE Resource );
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//
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// The following macros are used to check whether the current thread
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// owns the resoures in the given structures.
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//
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// ASSERT_EXCLUSIVE_FCB( IN PFCB Fcb );
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//
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// ASSERT_SHARED_FCB( IN PFCB Fcb );
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//
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// ASSERT_EXCLUSIVE_SCB( IN PSCB Scb );
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//
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// ASSERT_SHARED_SCB( IN PSCB Scb );
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//
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// The following macro is used to check that we are not trying to
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// manipulate an lcn that does not exist
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//
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// ASSERT_LCN_RANGE( IN PVCB Vcb, IN LCN Lcn );
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//
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#ifdef NTFSDBG
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extern LONG NtfsDebugTraceLevel;
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extern LONG NtfsDebugTraceIndent;
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extern LONG NtfsFailCheck;
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#define DEBUG_TRACE_ERROR (0x00000001)
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#define DEBUG_TRACE_QUOTA (0x00000002)
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#define DEBUG_TRACE_CATCH_EXCEPTIONS (0x00000004)
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#define DEBUG_TRACE_UNWIND (0x00000008)
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#define DEBUG_TRACE_CLEANUP (0x00000010)
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#define DEBUG_TRACE_CLOSE (0x00000020)
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#define DEBUG_TRACE_CREATE (0x00000040)
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#define DEBUG_TRACE_DIRCTRL (0x00000080)
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#define DEBUG_TRACE_EA (0x00000100)
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#define DEBUG_TRACE_FILEINFO (0x00000200)
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#define DEBUG_TRACE_SEINFO (0x00000200) // shared with FileInfo
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#define DEBUG_TRACE_FSCTRL (0x00000400)
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#define DEBUG_TRACE_SHUTDOWN (0x00000400) // shared with FsCtrl
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#define DEBUG_TRACE_LOCKCTRL (0x00000800)
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#define DEBUG_TRACE_READ (0x00001000)
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#define DEBUG_TRACE_VOLINFO (0x00002000)
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#define DEBUG_TRACE_WRITE (0x00004000)
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#define DEBUG_TRACE_FLUSH (0x00008000)
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#define DEBUG_TRACE_DEVCTRL (0x00010000)
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#define DEBUG_TRACE_LOGSUP (0x00020000)
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#define DEBUG_TRACE_BITMPSUP (0x00040000)
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#define DEBUG_TRACE_ALLOCSUP (0x00080000)
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#define DEBUG_TRACE_MFTSUP (0x00100000)
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#define DEBUG_TRACE_INDEXSUP (0x00200000)
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#define DEBUG_TRACE_ATTRSUP (0x00400000)
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#define DEBUG_TRACE_FILOBSUP (0x00800000)
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#define DEBUG_TRACE_NAMESUP (0x01000000)
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#define DEBUG_TRACE_SECURSUP (0x01000000) // shared with NameSup
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#define DEBUG_TRACE_VERFYSUP (0x02000000)
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#define DEBUG_TRACE_CACHESUP (0x04000000)
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#define DEBUG_TRACE_PREFXSUP (0x08000000)
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#define DEBUG_TRACE_DEVIOSUP (0x10000000)
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#define DEBUG_TRACE_STRUCSUP (0x20000000)
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#define DEBUG_TRACE_FSP_DISPATCHER (0x40000000)
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#define DEBUG_TRACE_ACLINDEX (0x80000000)
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#define DebugTrace(INDENT,LEVEL,M) { \
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LONG _i; \
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if (((LEVEL) == 0) || \
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(NtfsDebugTraceLevel & (LEVEL)) != 0) { \
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_i = (ULONG)PsGetCurrentThread(); \
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DbgPrint("%08lx:",_i); \
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if ((INDENT) < 0) { \
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NtfsDebugTraceIndent += (INDENT); \
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} \
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if (NtfsDebugTraceIndent < 0) { \
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NtfsDebugTraceIndent = 0; \
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} \
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for (_i = 0; _i < NtfsDebugTraceIndent; _i += 1) { \
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DbgPrint(" "); \
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} \
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DbgPrint M; \
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if ((INDENT) > 0) { \
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NtfsDebugTraceIndent += (INDENT); \
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} \
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} \
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}
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#define DebugUnwind(X) { \
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if (AbnormalTermination()) { \
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DebugTrace( 0, DEBUG_TRACE_UNWIND, (#X ", Abnormal termination.\n") ); \
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} \
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}
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#define DebugDoit(X) X
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//
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// Perform log-file-full testing.
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//
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#define FailCheck(I,S) { \
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PIRP_CONTEXT FailTopContext = (I)->TopLevelIrpContext; \
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if (FailTopContext->NextFailCount != 0) { \
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if (--FailTopContext->CurrentFailCount == 0) { \
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FailTopContext->NextFailCount++; \
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FailTopContext->CurrentFailCount = FailTopContext->NextFailCount; \
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ExRaiseStatus( S ); \
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} \
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} \
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}
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#define LogFileFullFailCheck(I) FailCheck( I, STATUS_LOG_FILE_FULL )
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//
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// The following variables are used to keep track of the total amount
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// of requests processed by the file system, and the number of requests
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// that end up being processed by the Fsp thread. The first variable
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// is incremented whenever an Irp context is created (which is always
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// at the start of an Fsd entry point) and the second is incremented
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// by read request.
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//
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extern ULONG NtfsFsdEntryCount;
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extern ULONG NtfsFspEntryCount;
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extern ULONG NtfsIoCallDriverCount;
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#else
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#define DebugTrace(INDENT,LEVEL,M) {NOTHING;}
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#define DebugUnwind(X) {NOTHING;}
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#define DebugDoit(X) NOTHING
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#define FailCheck(I,S)
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#define LogFileFullFailCheck(I)
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#endif // NTFSDBG
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//
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// The following macro is for all people who compile with the DBG switch
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// set, not just NTFSDBG users
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//
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#ifdef NTFSDBG
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#define DbgDoit(X) {X;}
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#define ASSERT_VCB(V) { \
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ASSERT((NodeType(V) == NTFS_NTC_VCB)); \
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}
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#define ASSERT_OPTIONAL_VCB(V) { \
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ASSERT(((V) == NULL) || \
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(NodeType(V) == NTFS_NTC_VCB)); \
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}
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#define ASSERT_FCB(F) { \
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ASSERT((NodeType(F) == NTFS_NTC_FCB)); \
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}
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#define ASSERT_OPTIONAL_FCB(F) { \
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ASSERT(((F) == NULL) || \
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(NodeType(F) == NTFS_NTC_FCB)); \
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}
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#define ASSERT_SCB(S) { \
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ASSERT((NodeType(S) == NTFS_NTC_SCB_DATA) || \
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(NodeType(S) == NTFS_NTC_SCB_MFT) || \
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(NodeType(S) == NTFS_NTC_SCB_INDEX) || \
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(NodeType(S) == NTFS_NTC_SCB_ROOT_INDEX)); \
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}
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#define ASSERT_OPTIONAL_SCB(S) { \
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ASSERT(((S) == NULL) || \
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(NodeType(S) == NTFS_NTC_SCB_DATA) || \
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(NodeType(S) == NTFS_NTC_SCB_MFT) || \
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(NodeType(S) == NTFS_NTC_SCB_INDEX) || \
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(NodeType(S) == NTFS_NTC_SCB_ROOT_INDEX)); \
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}
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#define ASSERT_CCB(C) { \
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ASSERT((NodeType(C) == NTFS_NTC_CCB_DATA) || \
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(NodeType(C) == NTFS_NTC_CCB_INDEX)); \
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}
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#define ASSERT_OPTIONAL_CCB(C) { \
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ASSERT(((C) == NULL) || \
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((NodeType(C) == NTFS_NTC_CCB_DATA) || \
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(NodeType(C) == NTFS_NTC_CCB_INDEX))); \
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}
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#define ASSERT_LCB(L) { \
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ASSERT((NodeType(L) == NTFS_NTC_LCB)); \
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}
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#define ASSERT_OPTIONAL_LCB(L) { \
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ASSERT(((L) == NULL) || \
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(NodeType(L) == NTFS_NTC_LCB)); \
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}
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#define ASSERT_PREFIX_ENTRY(P) { \
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ASSERT((NodeType(P) == NTFS_NTC_PREFIX_ENTRY)); \
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}
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#define ASSERT_OPTIONAL_PREFIX_ENTRY(P) { \
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ASSERT(((P) == NULL) || \
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(NodeType(P) == NTFS_NTC_PREFIX_ENTRY)); \
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}
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#define ASSERT_IRP_CONTEXT(I) { \
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ASSERT((NodeType(I) == NTFS_NTC_IRP_CONTEXT)); \
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}
|
||
|
||
#define ASSERT_OPTIONAL_IRP_CONTEXT(I) { \
|
||
ASSERT(((I) == NULL) || \
|
||
(NodeType(I) == NTFS_NTC_IRP_CONTEXT)); \
|
||
}
|
||
|
||
#define ASSERT_IRP(I) { \
|
||
ASSERT(((I)->Type == IO_TYPE_IRP)); \
|
||
}
|
||
|
||
#define ASSERT_OPTIONAL_IRP(I) { \
|
||
ASSERT(((I) == NULL) || \
|
||
((I)->Type == IO_TYPE_IRP)); \
|
||
}
|
||
|
||
#define ASSERT_FILE_OBJECT(F) { \
|
||
ASSERT(((F)->Type == IO_TYPE_FILE)); \
|
||
}
|
||
|
||
#define ASSERT_OPTIONAL_FILE_OBJECT(F) { \
|
||
ASSERT(((F) == NULL) || \
|
||
((F)->Type == IO_TYPE_FILE)); \
|
||
}
|
||
|
||
#define ASSERT_EXCLUSIVE_RESOURCE(R) { \
|
||
ASSERTMSG("ASSERT_EXCLUSIVE_RESOURCE ", ExIsResourceAcquiredExclusiveLite(R)); \
|
||
}
|
||
|
||
#define ASSERT_SHARED_RESOURCE(R) \
|
||
ASSERTMSG( "ASSERT_RESOURCE_NOT_MINE ", ExIsResourceAcquiredSharedLite(R));
|
||
|
||
#define ASSERT_RESOURCE_NOT_MINE(R) \
|
||
ASSERTMSG( "ASSERT_RESOURCE_NOT_MINE ", !ExIsResourceAcquiredSharedLite(R));
|
||
|
||
#define ASSERT_EXCLUSIVE_FCB(F) { \
|
||
if (NtfsSegmentNumber( &(F)->FileReference ) \
|
||
>= FIRST_USER_FILE_NUMBER) { \
|
||
ASSERT_EXCLUSIVE_RESOURCE(F->Resource); \
|
||
} \
|
||
} \
|
||
|
||
#define ASSERT_SHARED_FCB(F) { \
|
||
if (NtfsSegmentNumber( &(F)->FileReference ) \
|
||
>= FIRST_USER_FILE_NUMBER) { \
|
||
ASSERT_SHARED_RESOURCE(F->Resource); \
|
||
} \
|
||
} \
|
||
|
||
#define ASSERT_EXCLUSIVE_SCB(S) ASSERT_EXCLUSIVE_FCB(S->Fcb)
|
||
|
||
#define ASSERT_SHARED_SCB(S) ASSERT_SHARED_FCB(S->Fcb)
|
||
|
||
#define ASSERT_LCN_RANGE_CHECKING(V,L) { \
|
||
ASSERTMSG("ASSERT_LCN_RANGE_CHECKING ", \
|
||
((V)->TotalClusters == 0) || ((L) <= (V)->TotalClusters)); \
|
||
}
|
||
|
||
#else
|
||
|
||
#define DbgDoit(X) {NOTHING;}
|
||
#define ASSERT_VCB(V) {DBG_UNREFERENCED_PARAMETER(V);}
|
||
#define ASSERT_OPTIONAL_VCB(V) {DBG_UNREFERENCED_PARAMETER(V);}
|
||
#define ASSERT_FCB(F) {DBG_UNREFERENCED_PARAMETER(F);}
|
||
#define ASSERT_OPTIONAL_FCB(F) {DBG_UNREFERENCED_PARAMETER(F);}
|
||
#define ASSERT_SCB(S) {DBG_UNREFERENCED_PARAMETER(S);}
|
||
#define ASSERT_OPTIONAL_SCB(S) {DBG_UNREFERENCED_PARAMETER(S);}
|
||
#define ASSERT_CCB(C) {DBG_UNREFERENCED_PARAMETER(C);}
|
||
#define ASSERT_OPTIONAL_CCB(C) {DBG_UNREFERENCED_PARAMETER(C);}
|
||
#define ASSERT_LCB(L) {DBG_UNREFERENCED_PARAMETER(L);}
|
||
#define ASSERT_OPTIONAL_LCB(L) {DBG_UNREFERENCED_PARAMETER(L);}
|
||
#define ASSERT_PREFIX_ENTRY(P) {DBG_UNREFERENCED_PARAMETER(P);}
|
||
#define ASSERT_OPTIONAL_PREFIX_ENTRY(P) {DBG_UNREFERENCED_PARAMETER(P);}
|
||
#define ASSERT_IRP_CONTEXT(I) {DBG_UNREFERENCED_PARAMETER(I);}
|
||
#define ASSERT_OPTIONAL_IRP_CONTEXT(I) {DBG_UNREFERENCED_PARAMETER(I);}
|
||
#define ASSERT_IRP(I) {DBG_UNREFERENCED_PARAMETER(I);}
|
||
#define ASSERT_OPTIONAL_IRP(I) {DBG_UNREFERENCED_PARAMETER(I);}
|
||
#define ASSERT_FILE_OBJECT(F) {DBG_UNREFERENCED_PARAMETER(F);}
|
||
#define ASSERT_OPTIONAL_FILE_OBJECT(F) {DBG_UNREFERENCED_PARAMETER(F);}
|
||
#define ASSERT_EXCLUSIVE_RESOURCE(R) {NOTHING;}
|
||
#define ASSERT_SHARED_RESOURCE(R) {NOTHING;}
|
||
#define ASSERT_RESOURCE_NOT_MINE(R) {NOTHING;}
|
||
#define ASSERT_EXCLUSIVE_FCB(F) {NOTHING;}
|
||
#define ASSERT_SHARED_FCB(F) {NOTHING;}
|
||
#define ASSERT_EXCLUSIVE_SCB(S) {NOTHING;}
|
||
#define ASSERT_SHARED_SCB(S) {NOTHING;}
|
||
#define ASSERT_LCN_RANGE_CHECKING(V,L) {NOTHING;}
|
||
|
||
#endif // DBG
|
||
|
||
#endif // _NTFSDATA_
|
||
|