Commit Graph

17 Commits

Author SHA1 Message Date
Enrico Weigelt, metux IT consult ee302a1ac0 (submit/drop-obsolete-have-dix-config.h) 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>
2024-08-29 20:51:21 +02:00
Enrico Weigelt, metux IT consult 61f9a73575 (submit/cleanup-vidmode-dispatch) Xext: vidmode: simplify reply struct initialization
Coherently moving all reply struct decls and assignments into static
initialization right at declaration, just before it is getting byte-
swapped and sent out. Zero-assignments can be dropped here, since the
compiler automatically initializes all other fields to zero.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2024-08-29 20:51:20 +02:00
Enrico Weigelt, metux IT consult 7d80f46481 (submit/cleanup-vidmode-dispatch) Xext: vidmode: tidy up multi-version request control flow, part 3
Some requests using different structs dependending on which protocol version
(v1 vs. v2) had been selected. That's is handled by coverting v1 structs into v2,
before proceeding with the actual handling.

The code flow of this is very complex and hard to understand. Cleaning this up
in several smaller steps, that are easier to digest.

This part moves the request payload structs (or pointers to them) into the
per-version branches. Within each branch following our usual scheme for
extension request handlers (eg. using the REQUEST*() macros and having a
pointer named `stuff` to the current request struct)

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2024-08-29 20:51:20 +02:00
Enrico Weigelt, metux IT consult ad6c086e12 (submit/cleanup-vidmode-dispatch) Xext: vidmode: tidy up multi-version request control flow, part 2
Some requests using different structs dependending on which protocol version
(v1 vs. v2) had been selected. That's is handled by coverting v1 structs into v2,
before proceeding with the actual handling.

The code flow of this is very complex and hard to understand. Cleaning this up
in several smaller steps, that are easier to digest.

This part is splitting the huge request handlers into upper and lower half,
where the upper is doing the version check and converting v1 requests into v2,
while the lower one is doing the actual request processing, operating on the
struct pointer passed in from the upper one, instead of the client struct's
request buffer.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2024-08-29 20:51:20 +02:00
Enrico Weigelt, metux IT consult 2eaafbbb62 (submit/cleanup-vidmode-dispatch) Xext: vidmode: tidy up multi-version request control flow, part 1
Some requests using different structs dependending on which protocol version
(v1 vs. v2) had been selected. That's is handled by coverting v1 structs into v2,
before proceeding with the actual handling.

The code flow of this is very complex and hard to understand. Cleaning this up
in several smaller steps, that are easier to digest.

This moving the request size check into the if-version-X branches, to make it
some bit easier to undertand.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2024-08-29 20:51:20 +02:00
Enrico Weigelt, metux IT consult 24d90b9c09 (submit/cleanup-vidmode-dispatch) Xext: vidmode: simplify dispatcher
These dispatcher functions are much more complex than they're usually are
(just switch/case statement). Bring them in line with the standard scheme
used in the Xserver, so further steps become easier.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2024-08-29 20:51:20 +02:00
Enrico Weigelt, metux IT consult 7a8499f338 (submit/fixup-req-len) Xext: vidmode: drop now obsolete swap procs
Several SProc's have become no-ops, just calling the actual Proc's,
so we can get rid of them entirely.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2024-08-29 20:51:20 +02:00
Enrico Weigelt, metux IT consult 3b3a99459a (submit/fixup-req-len) Xext: vidmode: 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>
2024-08-29 20:51:19 +02:00
Enrico Weigelt, metux IT consult d5dea90301 (submit/fixup-req-len) Xext: vidmode: fix length checking with bigreq
The authorative source of the request frame size is client->req_len,
especially with big requests larger than 2^18 bytes.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2024-08-29 20:51:19 +02:00
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
Nathan Kidd 1b1d4c0469 hw/xfree86: unvalidated lengths
This addresses:
CVE-2017-12180 in XFree86-VidModeExtension
CVE-2017-12181 in XFree86-DGA
CVE-2017-12182 in XFree86-DRI

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 23:33:44 +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
Hans de Goede 380c2ca25e XF86VidMode: Fix free() on walked pointer
Based on: https://patchwork.freedesktop.org/patch/85636/

Rewritten to just not walk the pointer.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Emi Velikov <emil.l.velikov@gmail.com>
2016-09-28 14:53:39 -04:00
Adam Jackson 4f8151c7a4 Fix the typo from the previous patch, d'oh
Signed-off-by: Adam Jackson <ajax@redhat.com>
2016-03-14 11:20:39 -04:00
Chris Wilson 75eecf28ae Xext/vidmode: Reduce verbosity of GetModeLine debug messages
In commit f175cf45ae
Author: Olivier Fourdan <ofourdan@redhat.com>
Date:   Wed Feb 10 09:34:34 2016 +0100

    vidmode: move to a separate library of its own

the verbosity of some old debug messages (which print the reply to every
GetModeLine client request and others) was increased leading to lots of
log spam. Downgrade the logging back to DebugF.

[ajax: Fix a typo so it compiles.]

Reviewed-by: Adam Jackson <ajax@redhat.com>
References: https://bugs.freedesktop.org/show_bug.cgi?id=94515
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Olivier Fourdan <ofourdan@redhat.com>
2016-03-14 10:40:08 -04:00
Olivier Fourdan ac4d8c7cee vidmode: build without xf86vidmodeproto
git commit f175cf45:

  vidmode: move to a separate library of its own

introduced a regression where the xserver would not build when
xf86vidmodeproto is not installed even if the configure option
"--disable-xf86vidmode" is specified.

Fix build failure when xf86vidmodeproto is not installed.

Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
2016-03-01 11:25:59 -05:00
Olivier Fourdan f175cf45ae vidmode: move to a separate library of its own
XVidMode extension might be useful to non hardware servers as well (e.g.
Xwayand) so that applications that rely on it (e.g. lot of older games)
can at least have read access to XVidMode.

But the implementation is very XFree86 centric, so the idea is to add
a bunch of vfunc that other non-XFree86 servers can hook up into to
provide a similar functionality.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=87806
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
2016-02-29 16:29:01 -05:00