XLibre Xserver
Go to file
Enrico Weigelt, metux IT consult 5b13d85464 randr: refine allocation and copying of optional buffers
Simplifying the code flow allocating/checking/copying some buffers in
RRConfigureOutputProperty() and RRConfigureProviderProperty() so it's
easier to understand for both the human reader as well as the analyzer.

Depending on whether we have elements to process, a temporary buffer needs
to be allocated, checked for successful allocation and copy over data. The
way it's currently done is technically correct, but unnecessarily complex to
understand: instead of just branching on whether there are elements and doing
all the buffer-related things only then, the branching is done just somewhere
in the middle, only on checking for allocation failure, and relying on both
calloc() and memcpy() not doing weird things when size is zero.

It's easy to simplify by putting it all behind one if statement and so make
things easier for both human reader as well as the analyzer (so it's not
spilling out false alarms here anymore) and also drops unnecessary calls
in the zero-size case.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-06-12 16:32:09 +02:00
.gitlab-ci ci: Install XCB dependencies for meson tests 2025-02-26 09:57:07 +01:00
Xext Xext: security: drop not needed include 2025-06-12 16:30:13 +02:00
Xi Xi: exevents: extra asserts on NULL pointers 2025-06-12 16:31:22 +02:00
composite panoramix: replace FOR_NSCREENS() by FOR_NSCREENS_BACKWARD(i) 2025-06-12 16:24:18 +02:00
config linux: Fix BUS_PLATFORM detection for non-PCI devices 2025-02-07 15:10:17 +00:00
damageext os: unexport SetCriticalOutputPending() 2025-02-23 17:39:18 +00:00
dbe dbe: fix byte swapping in SProcDbeSwapBuffers() 2025-02-24 16:24:53 +01:00
dix XI: unexport XIPropToInt() and XIPropToFloat() 2025-06-12 16:25:48 +02:00
doc dix: unexport and document ClientSignal() 2025-06-12 16:17:49 +02:00
dri3 os: unexport WriteFdToClient() 2025-02-18 10:53:44 +00:00
exa exa: simplify CreatePixmap()/DestroyPixmap() handlers error pathes 2025-02-12 17:48:30 +01:00
fb fb: use dixDestroyPixmap() instead of direct driver call 2025-02-12 17:48:30 +01:00
glamor glamor: fix segfault on calloc() failure 2025-06-12 16:31:54 +02:00
glx os: unexport ResetCurrentRequest() 2025-02-18 10:53:45 +00:00
hw os: drop self-limiting resources 2025-06-12 16:31:57 +02:00
include include: don't install propertyst.h 2025-06-12 16:31:02 +02:00
man os: drop self-limiting resources 2025-06-12 16:31:57 +02:00
mi mi: miwideline: fix uninitialized fields in miWideLine() 2025-06-12 16:31:32 +02:00
miext os: move BUG_*() macros to own private header 2025-02-17 19:32:48 +00:00
os os: don't ever try to mess with stderr / fd 2 2025-06-12 16:32:00 +02:00
present randr: unexport and document RRCrtcExists() 2025-06-12 16:27:40 +02:00
pseudoramiX pseudoramiX: drop swapping request length fields 2025-02-06 22:28:49 +00:00
randr randr: refine allocation and copying of optional buffers 2025-06-12 16:32:09 +02:00
record dix: rename IsMaster to InputDevIsMaster() 2025-06-12 16:19:33 +02:00
render dix: rename IsFloating() to InputDevIsFloating() 2025-06-12 16:19:40 +02:00
test dix: unexport InitAtoms() and FreeAllAtoms() 2025-06-12 16:20:15 +02:00
xfixes dix: rename IsMaster to InputDevIsMaster() 2025-06-12 16:19:33 +02:00
xkb xkb: fix uninitialized variables in XkmReadFile() 2025-06-12 16:31:40 +02:00
.appveyor.yml appveyor: Add libxcvt build dep 2021-11-04 13:03:25 +00:00
.dir-locals.el .dir-locals.el: Add missing final newline 2019-10-01 17:05:28 +00:00
.git-blame-ignore-revs Ignore the coding style change commit during git blame 2024-12-06 09:55:53 +10:00
.gitignore Clean up the .gitignore file 2024-01-12 00:50:24 +00:00
.gitlab-ci.yml ci: fix missing runner tag on FreeBSD jobs after gitlab migration 2025-04-01 18:02:55 +00:00
.mailmap Update mailmap for Peter Harris 2025-04-15 13:49:13 -04:00
.travis.yml travis: Add OSX meson build to matrix 2019-05-02 15:42:58 +00:00
COPYING modesetting: Merge modesetting's COPYING into the xserver's. 2014-09-15 12:46:02 -07:00
README.md Fix spelling/wording issues 2020-07-05 13:07:33 -07:00
meson.build meson.build: print a summary of the DDX to build 2025-03-24 03:05:35 +00:00
meson_options.txt os: drop SUN-DES-1 authentication 2024-06-18 00:52:11 +00:00
xorg-server.m4 xorg-server.m4: just all cflags instead of just sdkdir 2018-09-20 20:12:24 +01:00
xorg-server.pc.in pkgconfig files: Add URL 2025-03-09 07:32:28 +00:00
xserver.ent.in doc: relocate xserver.ent in the package root directory 2011-05-14 11:22:26 -07:00

X Server

The X server accepts requests from client applications to create windows, which are (normally rectangular) "virtual screens" that the client program can draw into.

Windows are then composed on the actual screen by the X server (or by a separate composite manager) as directed by the window manager, which usually communicates with the user via graphical controls such as buttons and draggable titlebars and borders.

For a comprehensive overview of X Server and X Window System, consult the following article: https://en.wikipedia.org/wiki/X_server

All questions regarding this software should be directed at the Xorg mailing list:

https://lists.freedesktop.org/mailman/listinfo/xorg

The primary development code repository can be found at:

https://gitlab.freedesktop.org/xorg/xserver

For patch submission instructions, see:

https://www.x.org/wiki/Development/Documentation/SubmittingPatches

As with other projects hosted on freedesktop.org, X.Org follows its Code of Conduct, based on the Contributor Covenant. Please conduct yourself in a respectful and civilized manner when using the above mailing lists, bug trackers, etc:

https://www.freedesktop.org/wiki/CodeOfConduct