Even though it might never be actually hit, it's better to have an
(really cheap) extra check, just in case.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Even though it probably won't be hit ever, it's still better to be
really sure instead of some remote chance for hard segfault.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
As safety precaution, clear the pointers to extion records that just
have been free()ed.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
The checking / branchin isn't entirely trivial to understand, and the
analyzer also gets confused. So rewrite it in an simpler way that's
easier to understand both the human reader as well as the analyzer.
(and so get rid of yet another false alarm)
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
For type-safety turn xfreeData() macro into an inline function.
Also adding some checks against accidentially free()'ing global data.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
The analyzer giving a false alarm on potential NULL-pointer deref here.
Even though that case can't happen, it's also not immediately clear
to the human reader.
To make both the analyzer as well human reader happier, reformulating
this function to by using fast-return pattern.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
There might be a chance that RegionUninit() is trying to free() some
struct that's actually coming from .data segment.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
The analyzer is wrong here, because the free'd closure pointer really points
to some calloc()'d chunk, instead of the PolyText()'s stack frame.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
It's safer not relying on all ScreenProc's actually filled.
../dix/events.c: In function ‘CheckPhysLimits’:
../dix/events.c:780:14: warning: dereference of NULL ‘pScreen’ [CWE-476] [-Wanalyzer-null-dereference]
780 | (*pScreen->SetCursorPosition)
| ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
The pointer to the window properties is currently inside the WindowOptional
structure, which may or may not exist at any given time. Thus, before accessing
those fields, at least need to check whether it exists, potentially need to
create it first.
Since a pointer is small (in relation to WindowRec) and windows having properties
is a pretty common, we can make our life much simpler here by moving the pointer
directly into WindowRec, so we don't need extra WindowOptionalRec allocation.
This also fixes an analyzer warning on potential NULL dereference issue:
| ../dix/property.c: In function ‘dixChangeWindowProperty’:
|../dix/property.c:343:37: warning: dereference of NULL ‘*pWin.optional’ [CWE-476] [-Wanalyzer-null-dereference]
| 343 | pProp->next = pWin->optional->userProps;
| | ~~~~~~~~~~~~~~^~~~~~~~~~~
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
There's a (theoretical) chance that origGC might be NULL, so better
be cautious and check for this - doesn't cost us much, probably just
another JZ instruction.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
We stopped including this in error messages back in 2008
Clears warning from clang 19.1.7:
os/utils.c:1338:9: warning: macro is not used [-Wunused-macros]
1338 | #define BUGADDRESS BUILDERADDR
| ^
Fixes: ef77e4c44 ("Remove useless commentary from environment and argument processing.")
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1910>
Found by clang 19.1.7:
hw/xfree86/drivers/modesetting/driver.c:163:21:
warning: initializer overrides prior initialization of this subobject
[-Winitializer-overrides]
163 | ._modinfo1_ = MODINFOSTRING2,
| ^~~~~~~~~~~~~~
hw/xfree86/drivers/modesetting/driver.c:162:21:
note: previous initialization is here
162 | ._modinfo1_ = MODINFOSTRING1,
| ^~~~~~~~~~~~~~
Fixes: 2a10eff6c ("xfree86: modsetting: use explicit field initializers for XF86ModuleData")
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1910>
Clears warnings from clang 19.1.7:
test/list.c:95:2: warning: extra ';' outside of a function [-Wextra-semi]
95 | };
| ^
test/list.c:137:2: warning: extra ';' outside of a function [-Wextra-semi]
137 | };
| ^
Fixes: 92788e677 ("test: add some tests for basic list manipulation.")
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1910>
This fixes a crash when we try to send focus events and dereference
FollowKeyboardWin (0x3) as WindowPtr.
A device set to XSetDeviceFocus(FollowKeyboard) is supposed to follow
the focus of the corresponding master device. During ActivateKeyboard
a slave device is detached from the master for the duration for the grab
so we don't actually have a master to follow - leaving our oldWin set to
the FollowKeyboardWin constant. This later crashes when we try to
dereference it.
Fix this by getting the current master (if any), or the saved master (if
temporarily detached due to a grab). And if failing that, use the VCK
as fallback device - that is technically wrong but it's such a niche use
case that it shouldn't matter.
Reproducer:
window = XCreateSimpleWindow(...)
deviceid = any device that is IsXExtensionKeyboard device
XSetDeviceFocus(deviceid, FollowKeyboard, ...)
XGrabDevice(deviceid, window, ...)
Fixes: f01ee198ff ("dix: don't use inputInfo.keyboard to get the focus window in ActivateKbdGrab")
Found-by: Olivier Fourdan <ofourdan@redhat.com>
Acked-by: Olivier Fourdan <ofourdan@redhat.com>
Tested-by: Olivier Fourdan <ofourdan@redhat.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1870>
The WriteReplyToClient() macro is used for cases where byte swapping
is implemented in a separate callback function (set in a global vector
table). Since Xwl extension doesn't have such a callback, but does the
byte swapping directly in it's request handlers, there's no need to
call the WriteReplyToClient() macro - we can use WriteToClient() instead.
Fixes: 2700bc6045 - xwayland: add support for the XWAYLAND extension
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1878>
All jobs utilizing kvm (eg. FreeBSD) need the "kvm" runner tag set.
It used to work w/o it, since all runners did have kvm, but in the
new CI there are non-kvm runners, so we really need to set the tag.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1872>
Use the correct macro for the font change of a single argument or
split the argument into two.
43:.BI Keyboard
46:.BI Pointer
52:.BI PointerAbsolute
58:.BI PointerAbsoluteProximity
62:.BI Touch
103:.BI xf86ITEventWaitForSync
-.-.
Wrong distance between sentences in the input file.
Separate the sentences and subordinate clauses; each begins on a new
line. See man-pages(7) ("Conventions for source file layout") and
"info groff" ("Input Conventions").
19:server as input events. It supports the full set of the xf86 driver APIs
20:exposed by Xorg. The primary use cases of this input driver are various
29:is created after the driver is initialized. The paths to the socket is passed
37:Sets the path where the driver will create a named socket. Any existing file
47:Initializes a relative-mode pointer device. It will have four valuators -
53:Initializes an absolute-mode pointer device. It will have four valuators -
87:specifies the protocol version supported by it. If this version is lower than
91:to the driver. Each event is an instance of one of the
93:structs. The length field defines the full length of the struct in bytes and
96:The responses from the server follow the same structure. Each response is an
99:structs. The length field defines the full length of the struct in bytes and
104:event. After sending such event, the client must read of a
106:events. The completion of the read operation indicates that Xorg has fully
-.-.
The name of a man page is typeset in bold and the section in roman
(see man-pages(7)).
24:Please refer to xorg.conf(5) for general configuration
112:Xorg(1), xorg.conf(5), Xserver(1), X(7)
-.-
Additionally:
"read of a xf86... event" -> "read an xf86... event"
Originally from: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1095449
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1875>
Wrong distance between sentences in the input file.
Separate the sentences and subordinate clauses; each begins on a new
line. See man-pages(7) ("Conventions for source file layout") and
"info groff" ("Input Conventions").
Mark a final abbreviation point as such by suffixing it with "\&".
25:Disables acceleration of uploading pixmap data to the framebuffer. Default: No.
-.-.
Split a punctuation mark from a single argument for a two-font macro
40:.BR xorg.conf(5).
-.-.
Section headings (.SH and .SS) do not need quoting.
38:.SH "SEE ALSO"
-.-.
Output from "test-groff -mandoc -t -K utf8 -rF0 -rHY=0 -rCHECKSTYLE=10 -ww -z ":
an.tmac:<stdin>:40: misuse, warning: .BR is for at least 2 arguments, got 1
Use macro '.B' for one argument or split argument.
Originally from: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1095446
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1875>
Output from "mandoc -T lint Xserver.1": (possibly shortened list)
mandoc: Xserver.1:117:4: WARNING: undefined escape, printing literally: \+
mandoc: Xserver.1:118:81: STYLE: input text line longer than 80 bytes: Allow connections fr...
mandoc: Xserver.1:122:84: STYLE: input text line longer than 80 bytes: Prohibit connections...
Add a comma (or \&) after "e.g." and "i.e.", or use English words
(man-pages(7)).
81:sets pointer acceleration (i.e. the ratio of how much is reported to how much
273:sets pointer acceleration threshold in pixels (i.e. after how many pixels
468:contain either an Internet hostname (e.g. expo.lcs.mit.edu)
Split lines longer than 80 characters into two or more lines.
Appropriate break points are the end of a sentence and a subordinate
clause; after punctuation marks.
Xserver.1: line 118 length 81
Allow connections from clients with an endianess different to that of the server.
Xserver.1: line 122 length 84
Prohibit connections from clients with an endianess different to that of the server.
Originally from: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1072500
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1875>
Wrong distance between sentences.
Separate the sentences and subordinate clauses; each begins on a new
line. See man-pages(7) ("Conventions for source file layout") and
"info groff" ("Input Conventions").
Split lines longer than 100 characters into two or more lines.
Appropriate break points are the end of a sentence and a subordinate
clause; after punctuation marks.
"[" and "]", showing optional arguments to options, should be typeset in roman.
Output from "test-groff -b -mandoc -dAD=l -rF0 -rHY=0 -t -w w -z -rSTYLECHECK=3":
an.tmac:<stdin>:104: style: .BI expects at least 2 arguments, got 1
troff: backtrace: '/home/bg/git/groff/build/s-tmac/an.tmac':524: macro 'B'
troff: backtrace: file '<stdin>':167
troff:<stdin>:167: warning: cannot select font 'F'
Originally from: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1041094
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1875>
