Commit Graph

87 Commits

Author SHA1 Message Date
dec05eba 4267785e6f xres: fix XResQueryClientIds always returning 0 clients
XaceHookClientAccess added in 098008879b
has incorrect condition in ConstructClientIds.

This fixes #182

Signed-off-by: dec05eba <dec05eba@protonmail.com>
2025-06-19 11:29:24 +02:00
dec05eba f397039d65 xres/xkb/xvmc/modesetting: Fix incorrect pointer data size usage
* xled change tested with `xset led named "Scroll Lock"`
* modesetting change tested with `xrandr --output DP-1 --gamma 0.5:0.5:0.5`.
  Without this fix that command does nothing
* xvmc change tested with `mpv --vo=xv video.mp4`

Of the currently reported issues this fixes #104

Signed-off-by: dec05eba <dec05eba@protonmail.com>
2025-06-13 13:01:24 +02:00
Enrico Weigelt, metux IT consult 3c028a8cc0 miext: move over extinit_priv.h from include
Since most of the extension init logic (and on/off switches for them)
is driven from miext, this seems the appropriate place for the header.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 17:21:46 +02:00
Enrico Weigelt, metux IT consult aa9a93461d Xext: xres: ProcXResQueryClientIds() collect reply in one buffer
In order to allow simplifying the reply send path, collect the reply
fragments into one buffer, instead of arbitrary number of WriteToClient()
calls. This also makes it much easier for potentially new purely packet-based
transports which (eg. binder) that would need their own stream parsing logic.

This xres function is an exceptionally hard case, since payload is constructed
step by step, and it's size only known when finished. The current way of the
fragment handling still has lots of room for improvement (eg. using very small
number of allocations), but leaving this for later exercise.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 17:21:44 +02:00
Enrico Weigelt, metux IT consult 155540afa1 Xext: xres: ProcXResQueryClientResources() simplify payload write out
Collect the few bits in a local array, so one WriteToClient() call is
sufficient. That's also easing further simplifications in upcoming commits.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 17:21:44 +02:00
Enrico Weigelt, metux IT consult 3af9346edb Xext: xres: ProcXResQueryClients() simplify payload write out
Collect the few bits in a local array, so one WriteToClient() call is
sufficient. That's also easing further simplifications in upcoming commits.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 17:21:44 +02:00
Enrico Weigelt, metux IT consult 647d5a81ec Xext: xres: drop duplicate include
Drop duplicated #include <string.h>.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 17:21:44 +02:00
Enrico Weigelt, metux IT consult d37ce05b94 Xext: xres: use static initialization and scoped ars
* use static initialization where applicable
* drop unneeded setting of zero values
* use scoped variables

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 17:21:44 +02:00
Enrico Weigelt, metux IT consult 01d6efb414 xext: xres: protect from allocation failure
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 17:21:43 +02:00
Enrico Weigelt, metux IT consult dda64fcadf xext: replace xallocarray() by calloc()
Only key difference that calloc(), in contrast to rellocarray(),
is zero-initializing. The overhead is hard to measure on today's
machines, and it's safer programming practise to always allocate
zero-initialized, so one can't forget to do it explicitly.

Cocci rule:

    @@
    expression COUNT;
    expression LEN;
    @@
    - xallocarray(COUNT,LEN)
    + calloc(COUNT,LEN)

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 17:21:43 +02:00
Enrico Weigelt, metux IT consult a09805f675 dix: add dixClientForXID()
Retrieves the ClientPtr for the owner of given resource.
This way reducing the sites directly accessing clients[] array.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 16:53:34 +02:00
Enrico Weigelt, metux IT consult 0a315e45dd dix: replace CLIENT_ID() macro by dixClientIdForXID() inline function
Make it type-safe and a bit more obvious what it really does,
also adding some inline documentation. Since it's just some
bit shifting magic, it's qualified for inlining.

The CLIENT_ID() macro isn't used by any external modules, so the
new function doesn't need to be in a public header.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 16:53:27 +02:00
Enrico Weigelt, metux IT consult 098008879b Xres: XResQueryClientIds: enable security filtering
Pass each client we're considering to report through XaceHookClientAccess(),
so security extensions have a chance to filter them out.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 16:51:58 +02:00
Enrico Weigelt, metux IT consult 750b65de69 Xres: XResQueryClientPixmapBytes: enable security filtering
Pass each client we're considering to report through XaceHookClientAccess(),
so security extensions have a chance to filter them out.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 16:51:44 +02:00
Enrico Weigelt, metux IT consult 146b04f4e2 Xres: XResQueryClientResources: enable security filtering
Pass each client we're considering to report through XaceHookClientAccess(),
so security extensions have a chance to filter them out.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 16:51:41 +02:00
Enrico Weigelt, metux IT consult 1594bad1f8 Xres: XResQueryClients: enable security filtering
Pass each client we're considering to report through XaceHookClientAccess(),
so security extensions have a chance to filter them out.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 16:51:38 +02:00
Enrico Weigelt, metux IT consult c96901a85a Xext: use calloc() instead of malloc()
Using calloc() instead of malloc() as preventive measure, so there
never can be any hidden bugs or leaks due uninitialized memory.

The extra cost of using this compiler intrinsic should be practically
impossible to measure - in many cases a good compiler can even deduce
if certain areas really don't need to be zero'd (because they're written
to right after allocation) and create more efficient machine code.

The code pathes in question are pretty cold anyways, so it's probably
not worth even thinking about potential extra runtime costs.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 16:48:11 +02:00
Enrico Weigelt, metux IT consult d708b28adc treewide: drop COMPOSITE symbol
It's always enabled for very long time now (at least since meson transition),
there doesn't seem to be any need to ever disable it again. So we can reduce
code complexity by removing all the ifdef's.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 16:47:01 +02:00
Enrico Weigelt, metux IT consult a7f8d0db3d Xext: xres: protect against free()ing from non-heap
> ../Xext/xres.c: In function ‘DestroyFragments’:
> ../Xext/xres.c:124:9: warning: ‘free’ of ‘it’ which points to memory on the stack [CWE-590] [-Wanalyzer-free-of-non-heap]
>   124 |         free(it);
>      |         ^~~~~~~~

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 16:32:38 +02:00
Enrico Weigelt, metux IT consult 356e18dcc6 os: move out extension disable flags to corresponing extensions
The OS abstraction isn't really the right place for those flags,
they are're probably better off in their corresponding extensions.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1519>
2025-02-07 12:00:53 +01:00
Enrico Weigelt, metux IT consult 8b57516414 Xext: xres: drop swapping request length fields
The request struct's length fields aren't used anymore - we have the
client->req_len field instead, which also is bigreq-compatible.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1639>
2025-02-06 22:28:50 +00:00
Enrico Weigelt, metux IT consult 7ac7a2d6de os: split off internal definitions from client.h
The client.h file is part of the public module API, but it also contains
definitions that aren't useful for being used in modules. Splitting them
out into their own client_priv.h file, which isn't part of the API.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2024-10-10 13:45:29 +00:00
Enrico Weigelt, metux IT consult a917f6a8a8 drop obsolete HAVE_DIX_CONFIG_H
The symbol controls whether to include dix-config.h, and it's always set,
thus we don't need it (and dozens of ifdef's) anymore.

This commit only removes them from our own source files, where we can
guarantee that dix-config.h is present - leaving the (potentially exported)
headers untouched.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2024-10-10 13:38:31 +00:00
Enrico Weigelt, metux IT consult 33350ef8ff include: move private definitions out of extinit.h
Public server module API shouldn't be clobbered with private definitions,
thus move them out to extinit_priv.h.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1289>
2024-04-30 00:47:38 +00:00
Enrico Weigelt, metux IT consult dc84331f5d include: drop obsolete registry.h
Now that there's no actual consumer of it left, it can be dropped.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1348>
2024-03-03 23:20:06 +00:00
Enrico Weigelt, metux IT consult 1f5ab6ec28 dix: unexport RegisterResourceName() and LookupResourceName()
These aren't used by external modules, thus no need to export them.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1348>
2024-03-03 23:20:06 +00:00
Alan Coopersmith 23e83724df Fix spelling/wording issues
Most (but not all) of these were found by using
  codespell --builtin clear,rare,usage,informal,code,names
but not everything reported by that was fixed.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2020-07-05 13:07:33 -07:00
Adam Jackson eafcd009f1 xres: Return the atom naming the type, not its internal type number
Signed-off-by: Adam Jackson <ajax@redhat.com>
2017-11-14 16:02:49 -05:00
Nathan Kidd cad5a1050b Unvalidated lengths
v2: Add overflow check and remove unnecessary check (Julien Cristau)

This addresses:
CVE-2017-12184 in XINERAMA
CVE-2017-12185 in MIT-SCREEN-SAVER
CVE-2017-12186 in X-Resource
CVE-2017-12187 in RENDER

Reviewed-by: Jeremy Huddleston Sequoia <jeremyhu@apple.com>
Reviewed-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Nathan Kidd <nkidd@opentext.com>
Signed-off-by: Julien Cristau <jcristau@debian.org>
2017-10-10 23:33:34 +02:00
Adam Jackson dc7ceda90f dispatch: Mark swapped dispatch as _X_COLD
This touches everything that ends up in the Xorg binary; the big missing
part is GLX since that's all generated code. Cuts about 14k from the
binary on amd64.

Signed-off-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2017-03-01 10:16:20 -05:00
Adam Jackson 4f8a72034c res: Simplify QueryClientPixmapBytes
I suspect this code predates the common resource hooks for computing
sizes.  It's ugly in any case since the Resource extension shouldn't
need to know which extensions can take a reference on pixmaps.  Instead,
let's just walk every resource for the client and sum up all the pixmap
bytes that way.

This might be slightly slower since we're calling the size func once for
every resource.  On the other hand, it might be slightly faster since we
only walk the resource table once instead of 3-5 times.  Probably a
wash, and not really a performance path in any case.

Acked-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2016-06-21 11:11:44 -04:00
Jeremy Huddleston aa73d587fe xres: Silence -Wunused-function warnings when building !COMPOSITE or !RENDER
xres.c:422:1: warning: unused function 'ResFindCompositeClientWindowPixmaps' [-Wunused-function,Unused Entity Issue]
ResFindCompositeClientWindowPixmaps (void *value, XID id, void *cdata)
^

Signed-off-by: Jeremy Huddleston Sequoia <jeremyhu@apple.com>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2015-10-19 11:49:54 -04:00
Alan Coopersmith 1c56ac63c0 Convert top level extensions to new *allocarray functions
v2: remove now useless parentheses

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
2015-04-21 16:57:08 -07:00
Peter Hutterer 732fd7e571 Drop trailing whitespaces
sed -i "s/[ ]\+$//g" **/*.(c|h)

happy reviewing...
git diff -w is an empty diff.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2014-11-12 10:25:00 +10:00
Adam Jackson f466fb2432 xres: Fix size estimation for <8bpp pixmaps (#69057)
Just use floats, it's not like this is a performance path.

Signed-off-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
2014-04-21 21:39:43 -07:00
Keith Packard 60014a4a98 Replace 'pointer' type with 'void *'
This lets us stop using the 'pointer' typedef in Xdefs.h as 'pointer'
is used throughout the X server for other things, and having duplicate
names generates compiler warnings.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2014-01-12 10:24:11 -08:00
Keith Packard a1cb69dc28 Xext: Clean up warnings
GC funcs and ops are const.
Remove unused variables.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
2014-01-12 10:14:49 -08:00
Yaakov Selkowitz 20cf7918ed Xext: fix redundant redeclaration warnings
panoramiX.c:595:13: warning: redundant redeclaration of 'CreateConnectionBlock'
../include/dix.h:167:23: note: previous declaration of 'CreateConnectionBlock' was here
xres.c:193:13: warning: redundant redeclaration of 'ResExtensionInit'
../include/extinit.h:109:13: note: previous declaration of 'ResExtensionInit'
xtest.c:60:12: warning: redundant redeclaration of 'DeviceValuator'
../Xi/exglobals.h:61:12: note: previous declaration of 'DeviceValuator' was here

Signed-off-by: Yaakov Selkowitz <yselkowitz@users.sourceforge.net>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
2012-11-05 13:25:07 -06:00
Tomas Carnecky 7d859bd878 Move XRes from extmod to built-in
Always build XRes support into the core server, rather than letting it
languish in extmod.

Signed-off-by: Tomas Carnecky <tom@dbservice.com>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-07-09 23:28:37 -07:00
Daniel Stone a1d41e311c Move extension initialisation prototypes into extinit.h
Create extinit.h (and xf86Extensions.h, for Xorg-specific extensions) to
hold all our extension initialisation prototypes, rather than
duplicating them everywhere.

Signed-off-by: Daniel Stone <daniel@fooishbar.org>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-07-09 23:06:41 -07:00
Tomas Carnecky 5079db78ae Replace INITARGS with void
INITARGS was a hardcoded define to void.  Since knowing the function
signature for your extensions is kinda useful, just replace it with a
hardcoded void, but leave the define there for API compatibility.

Signed-off-by: Tomas Carnecky <tom@dbservice.com>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Reviewed-by: Cyril Brulebois <kibi@debian.org>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-07-09 23:06:41 -07:00
Alan Coopersmith 6a721e3af5 Use C99 designated initializers in Xext Replies
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Tested-by: Daniel Stone <daniel@fooishbar.org>
2012-07-09 19:58:30 -07:00
Alan Coopersmith 789d64e19a Remove unneccesary casts from WriteToClient calls
Casting return to (void) was used to tell lint that you intended
to ignore the return value, so it didn't warn you about it.

Casting the third argument to (char *) was used as the most generic
pointer type in the days before compilers supported C89 (void *)
(except for a couple places it's used for byte-sized pointer math).

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Tested-by: Daniel Stone <daniel@fooishbar.org>
2012-07-09 19:12:56 -07:00
Jeremy Huddleston 0ba1794fe2 xres: Fix build without composite
Regression from: b8d0d19a6d
Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>
Reviewed-by: Rami Ylimäki <rami.ylimaki@vincit.fi>
Tested-By: Michal Suchanek <hramrach@gmail.com>
2012-04-23 20:16:53 -07:00
Erkki Seppälä 233eab4d05 dix: add reference count of the resource to ResourceSizeRec
The ResourceSizeRec now contains the number of references to the
resource. For example a Pixmap knows this value and it can be useful
for determining the "weight" of the resource. Typically this value
is 1.

Reviewed-by: Rami Ylimäki <rami.ylimaki@vincit.fi>
Signed-off-by: Erkki Seppälä <erkki.seppala@vincit.fi>
2012-04-18 12:49:11 +03:00
Rami Ylimäki b8d0d19a6d composite: Report pixmap usage of client windows to resource extension.
Signed-off-by: Erkki Seppälä <erkki.seppala@vincit.fi>
Signed-off-by: Rami Ylimäki <rami.ylimaki@vincit.fi>
Reviewed-by: Mikhail Gusarov <dottedmag@dottedmag.net>
Reviewed-by: Tiago Vignatti <tiago.vignatti@nokia.com>
2012-04-18 12:31:27 +03:00
Rami Ylimäki e83388cc70 render: Report pixmap usage of pictures to resource extension.
Signed-off-by: Erkki Seppälä <erkki.seppala@vincit.fi>
Signed-off-by: Rami Ylimäki <rami.ylimaki@vincit.fi>
Reviewed-by: Mikhail Gusarov <dottedmag@dottedmag.net>
Reviewed-by: Tiago Vignatti <tiago.vignatti@nokia.com>
2012-04-18 12:31:24 +03:00
Erkki Seppälä 96864bfa95 Implemented first part of XResource extension v1.2: X_XResQueryClientIds
This patch implements a part of the XResource extension v1.2 (as specified in
http://patchwork.freedesktop.org/patch/2720/ ). The request implemented is
X_XResQueryClientIds.

This patch depends on the feature introduced by
1e933665be "dix: Add facilities for
client ID tracking." .

This latest version also adds Doxygen-formatted comments and takes a better
notice of coding conventions (as in http://www.x.org/wiki/CodingStyle ).

Signed-off-by: Erkki Seppälä <erkki.seppala@vincit.fi>
2012-04-18 10:21:49 +03:00
Keith Packard 9838b7032e Introduce a consistent coding style
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>
2012-03-21 13:54:42 -07:00
Alan Coopersmith 020d83d361 xres.c: Preserve constness of string returned by LookupResourceName
MakeAtom now accepts a const char * so we don't need to cast down to
char * anymore.   Fixes gcc warning of:

xres.c: In function 'ProcXResQueryClientResources':
xres.c:155:6: warning: cast discards qualifiers from pointer target type

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
2011-12-12 17:03:09 -08:00