Extending the decade old f0124ed93, to increase the number of input
devices from 40 to 256. 40 translates at most 9 MD, while 256 will allow
63 MD. It is an arbitrary number, but people are hitting the current
limit under reasonable conditions.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=64793
Signed-off-by: Arthur Williams <taaparthur@gmail.com>
If one misconfigures a ZaphodHeads value (more than 20 characters
without a delimiter), we get an overflow of our buffer. Use
xstrtokenize() instead of writing/fixing our own tokenizer.
Signed-off-by: Daniel Martin <consume.noise@gmail.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
The extension was using the name CARD64 to represent 64-bit values,
with a #define from CARD64 to XSyncValue, a struct with a pair of
32-bit values representing a signed 64-bit value. This interfered
with protocol headers using CARD64 to try to actually store a
uint64_t. Now that stdint.h exists, let's just use that here,
instead.
v2: Fix alarm delta changes.
v3: Do the potentially overflowing math as uint and convert to int
afterward, out of C spec paranoia.
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
The previous misc.h code went out of its way to allow swapping of
unaligned pointers to values. However, the members of an X
request/response are always naturally aligned within the struct, and
the buffers containing a request/response will also be aligned to at
least 8 bytes, so we can just drop it.
text data bss dec hex filename
before: 2215167 51552 132016 2398735 249a0f hw/xfree86/Xorg
after: 2214919 51552 132016 2398487 249917 hw/xfree86/Xorg
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
The clever pointer tricks were actually not working, and we were doing
the byte-by-byte moves in general. By just doing the memcpy and
obvious byte swap code, we end up generating actual byte swap
instructions, thanks to optimizing compilers.
text data bss dec hex filename
before: 2240807 51552 132016 2424375 24fe37 hw/xfree86/Xorg
after: 2215167 51552 132016 2398735 249a0f hw/xfree86/Xorg
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
There's no reason not to offer ridiculous numbers of clients; only a
few static data structures are arrays of this length.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
The current SIGIO signal handler method, used at generation of input events,
has a bunch of oddities. This patch introduces an alternative way using a
thread, which is used to select() all input device file descriptors.
A mutex was used to control the access to input structures by the main and input
threads. Two pipes to emit alert events (such hotplug ones) and guarantee the
proper communication between them was also used.
Co-authored-by: Fernando Carrijo <fcarrijo@freedesktop.org>
Signed-off-by: Tiago Vignatti <tiago.vignatti@nokia.com>
v2: Fix non-Xorg link. Enable where supported by default.
This also splits out the actual enabling of input threads to
DDX-specific patches which follow
v3: Make the input lock recursive
v4: Use regular RECURSIVE_MUTEXes instead of rolling our own
Respect the --disable-input-thread configuration option by
providing stubs that expose the same API/ABI.
Respond to style comments from Peter Hutterer.
v5: use __func__ in inputthread debug and error mesages.
Respond to style comments from Peter Hutterer.
v6: use AX_PTHREAD instead of inlining pthread tests.
Suggested by Emil Velikov <emil.l.velikov@gmail.com>
v7: Use pthread_sigmask instead of sigprocmask when using threads
Suggested by Adam Jackson <ajax@redhat.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Make the maximum number of clients user configurable, either from the command
line or from xorg.conf
This patch works by using the MAXCLIENTS (raised to 512) as the maximum
allowed number of clients, but allowing the actual limit to be set by the
user to a lower value (keeping the default of 256).
There is a limit size of 29 bits to be used to store both the client ID and
the X resources ID, so by reducing the number of clients allowed to connect to
the X server, the user can increase the number of X resources per client or
vice-versa.
Parts of this patch are based on a similar patch from Adam Jackson
<ajax@redhat.com>
This now requires at least xproto 7.0.28
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
/usr/include/xorg/misc.h:141:30: warning: implicit conversion loses integer
precision: 'int' to 'uint16_t' (aka 'unsigned short') [-Wconversion]
return ((x & 0xff) << 8) | ((x >> 8) & 0xff);
~~~~~~ ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
Function sig is a uint16_t, so just force the cast.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
The easiest way to check for the version of an extension is to send the maximum
possible version numbers in the QueryVersion request. The X server overflows on
these as it assumes you will send a reasonable version number.
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
This reverts commit d0339a5c66.
seriously, what the fuck? Are we making xstrdup() return a const char now too?
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
This is the lazy man's %f support. Print the decimal part of the number,
then append a decimal point, then print the first two digits of the
fractional part. So %f in sigsafe printing is really %.2f.
No boundary checks in place here.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
Adds new function padding_for_int32() and uses existing pad_to_int32()
depending on required results.
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Tested-by: Daniel Stone <daniel@fooishbar.org>
This patch introduces gpu screens into screenInfo. It adds interfaces
for adding and removing gpu screens, along with adding private fixup,
block handler support, and scratch pixmap init.
GPU screens have a myNum that is offset by GPU_SCREEN_OFFSET (256),
this is used for logging etc.
RemoveGPUScreen isn't used until "xfree86: add platform bus hotplug support".
v2: no glyph pictures for GPU screens for now.
v3: introduce MAXGPUSCREENS, fix return value check
v4: fixup myNum when renumbering screens (ajax)
v5: drop cursor privates for now.
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Helper functions to avoid things like
if (foo) {
BUG_WARN(foo);
return 1;
}
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Chase Douglas <chase.douglas@canonical.com>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
This is strictly the application of the script 'x-indent-all.sh'
from util/modular. Compared to the patch that Daniel posted in
January, I've added a few indent flags:
-bap
-psl
-T PrivatePtr
-T pmWait
-T _XFUNCPROTOBEGIN
-T _XFUNCPROTOEND
-T _X_EXPORT
The typedefs were needed to make the output of sdksyms.sh match the
previous output, otherwise, the code is formatted badly enough that
sdksyms.sh generates incorrect output.
The generated code was compared with the previous version and found to
be essentially identical -- "assert" line numbers and BUILD_TIME were
the only differences found.
The comparison was done with this script:
dir1=$1
dir2=$2
for dir in $dir1 $dir2; do
(cd $dir && find . -name '*.o' | while read file; do
dir=`dirname $file`
base=`basename $file .o`
dump=$dir/$base.dump
objdump -d $file > $dump
done)
done
find $dir1 -name '*.dump' | while read dump; do
otherdump=`echo $dump | sed "s;$dir1;$dir2;"`
diff -u $dump $otherdump
done
Signed-off-by: Keith Packard <keithp@keithp.com>
Acked-by: Daniel Stone <daniel@fooishbar.org>
Acked-by: Alan Coopersmith <alan.coopersmith@oracle.com>
ErrorF output is prefixed with a timestamp, so the previous output would
look like this:
[ 50.423] BUG: triggered 'if (dev->valuator->numAxes < 2)'
BUG: getevents.c:842 in scale_to_desktop()
Change this to have the prefix on both lines:
[ 50.423] BUG: triggered 'if (dev->valuator->numAxes < 2)'
[ 50.423] BUG: getevents.c:842 in scale_to_desktop()
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Julien Cristau <jcristau@debian.org>
Previous declaration required the use of a message + printf varargs. We
obviously want to allow the use of just a message.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Not including GenericEvents
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Walter Harms <wharms@bfs.de>
Reviewed-by: Chase Douglas <chase.douglas@canonical.com>
__BUG_WARN_MSG is a simple helper to enable call with and without varargs. I
couldn't find a way to otherwise do this without getting gcc warnings.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Chase Douglas <chase.douglas@canonical.com>
There are plenty of cases that can only be triggered by a real bug in the
server and doing the ErrorF dance manually everywhere is a tad painful and
the error message is usually used only to find the spot in the file anyway.
Plus, reading BUG_WARN somewhere is a good indicator to the casual reader
that this isn't intended behaviour.
Note that this is intentionally different to the BUG_ON behaviour on the
kernel, we do not FatalError the server. It's just a warning + stacktrace.
If the bug is really fatal, call FatalError.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Chase Douglas <chase.douglas@canonical.com>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Since the check is for !(compilers that support __builtin_constant_p)
it needs to be !(gcc or new enough Sun cc), but was written as
!(gcc or too old Sun cc).
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
1) The error attribute appeared in gcc-4.3
2) The return type of __builtin_constant_p is int
3) Sun Studio 12.0 and later builtin support for __builtin_constant_p
Found by Tinderbox.
Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
If the address of the swapped memory location is known at compile time,
we can check its alignment at no runtime cost and use lswapl instead.
text data bss dec hex filename
before: 1872820 52136 78040 2002996 1e9034 hw/xfree86/Xorg
after: 1864396 52136 78040 1994572 1e6f4c hw/xfree86/Xorg
bswap instructions: 131 -> 308 (used in lswapl)
rol instructions: 943 -> 1174 (used in lswaps)
Reviewed-by: Peter Harris <pharris@opentext.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Should be safe since cpswap isn't used on pointers.
text data bss dec hex filename
before: 1875588 52136 78040 2005764 1e9b04 hw/xfree86/Xorg
after: 1872820 52136 78040 2002996 1e9034 hw/xfree86/Xorg
bswap instructions: 5 -> 131 (used in lswapl)
rol instructions: 811 -> 943 (used in lswaps)
Reviewed-by: Peter Harris <pharris@opentext.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
The original macros are retained (instead of replacing them with inline
functions) because of implicit type promotion. That is, an int16 passed
to an inline function taking int32 would be implicitly promoted to int32
without a warning.
Reviewed-by: Peter Harris <pharris@opentext.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Also, fix whitespace, mainly around
swaps(&rep.sequenceNumber)
Reviewed-by: Peter Harris <pharris@opentext.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
gcc generates better code with fabs() anyway.
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
Tested-by: Jeremy Huddleston <jeremyhu@apple.com>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Compare two version numbers in the major.minor form.
Switch the few users of manual version switching over to the new function.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
unsigned long is needlessly large on LP64. Use uint32_t instead.
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Use the values from xproto rather than duplicating the effort
Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
Move tokenize out of the parser, make it a dix util function instead.
Splitting a string into multiple substrings is useful by other places, so
let's use it across the line. Future users include config/hal, config/udev
and of course the parser.
Example usage:
char **substrings = xstrtokenize(my_string, "\n");
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Dan Nicholson <dbn.lists@gmail.com>
This patch adds the following three functions:
bits_to_bytes(bits) - the number of bytes needed to hold 'bits'
bytes_to_int32(bytes) - the number of 4-byte units to hold 'bytes'
pad_to_int32(bytes) - the closest multiple of 4 equal to or larger than
'bytes'.
All three operations are common in protocol processing and currently the
server has ((foo + 7)/8 + 3)/4 operations all over the place. A common set
of functions reduce the error rate of these (albeit simple) calculations and
improve readability of the code.
The functions do not check for overflow.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
With the Xtest virtual slave devices we have 4 devices for each MD
pointer/keyboard pair, plus the AllDevices and AllMasterDevices reserved
deviceids. It's quite easy to hit the current limit.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Save in a few special cases, _X_EXPORT should not be used in C source
files. Instead, it should be used in headers, and the proper C source
include that header. Some special cases are symbols that need to be
shared between modules, but not expected to be used by external drivers,
and symbols that are accessible via LoaderSymbol/dlopen.
This patch also adds conditionally some new sdk header files, depending
on extensions enabled. These files were added to match pattern for
other extensions/modules, that is, have the headers "deciding" symbol
visibility in the sdk. These headers are:
o Xext/panoramiXsrv.h, Xext/panoramiX.h
o fbpict.h (unconditionally)
o vidmodeproc.h
o mioverlay.h (unconditionally, used only by xaa)
o xfixes.h (unconditionally, symbols required by dri2)
LoaderSymbol and similar functions now don't have different prototypes,
in loaderProcs.h and xf86Module.h, so that both headers can be included,
without the need of defining IN_LOADER.
xf86NewInputDevice() device prototype readded to xf86Xinput.h, but
not exported (and with a comment about it).
Arthur Williams
Daniel Martin
Eric Anholt
Keith Packard
Olivier Fourdan
Peter Hutterer
Robert Ancell
Alan Coopersmith
Dave Airlie
Chase Douglas
Matt Turner
Jeremy Huddleston
Adam Jackson
Christopher James Halse Rogers
Mikhail Gusarov
Paulo Cesar Pereira de Andrade
Peter Hutterer