If the native root window isn't resized as well, we will likely crash the
next time we draw to the root. On OS X, this can be seen by:
1) Put the display preferences in the menu bar and set X11's preferences so you
can access the menu bar in fullscreen mode
2) Set the resolution of your screen lower than normal.
3) Start X11 in fullscreen mode. The root window will cover the screen as
expected.
4) Use the menu bar to increase the resolution of the display. The root
window will now cover the old area and not the full screen, but
'xwininfo -root' will report the full width.
5) Run 'xsetroot -solid red', and we have the crash you mention above.
Leaving/entering fullscreen after #4 will fix the problem. This is because the
WINREC is erased when we leave fullscreen mode and it is recreated upon
re-entry:
RootlessUpdateRooted(FALSE)
RootlessDisableRoot(screenInfo.screens[0])
RootlessDestroyFrame (pRoot, winRec);
RootlessUpdateRooted(TRUE)
RootlessEnableRoot(screenInfo.screens[0])
RootlessEnsureFrame(screenInfo.screens[0]->pRoot)
creates a new WINREC...
Signed-off-by: Jan Hauffa <hauffa@in.tum.de>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
Acked-By: Jon TURNEY <jon.turney@dronecode.org.uk>
Tested-by: Jeremy Huddleston <jeremyhu@apple.com>
(cherry picked from commit 95756f410c)
The problem fixed by this patch can be reproduced on Linux with the
following steps.
- Access NULL pointer intentionally in ProcessOtherEvent on key press.
- Instead of saving core dump to a file, write it into a pipe.
echo "|/usr/sbin/my-core-dumper" > /proc/sys/kernel/core_pattern
- Dump the core by pressing a key.
While the core is being dumped into the pipe, the smart schedule timer
will cause a pending SIGALRM. Linux kernel stops writing data to the
pipe when there are pending signals. This causes the core dump to be
truncated. On my system I'm expecting a 6 MB dump but the size will be
60 kB instead. The problem is solved if we block the SIGALRM caused by
expired smart schedule timer.
I haven't been able to reproduce this problem in the following cases.
- Save core dump to a file instead of a pipe.
- kill -SEGV `pidof Xorg`
- Press a key to dump core while gdb is attached to Xorg.
- Give option -dumbSched to Xorg.
Also note that the fix works only when NoTrapSignals has the default
value FALSE. The problem can still be reproduced if error signals
aren't trapped. In addition to pending SIGALRM, there is a similar
problem with pending SIGIO from the keyboard driver during core dump.
Signed-off-by: Rami Ylimaki <ext-rami.ylimaki@nokia.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
main.c:134: warning: no previous prototype for 'dix_main'
rootlessScreen.c: In function 'RootlessMarkOverlappedWindows':
rootlessScreen.c:434: warning: function declaration isn't a prototype
backtrace.c:51: warning: format '%lx' expects type 'long unsigned int', but argument 5 has type 'int'
backtrace.c:54: warning: format '%lx' expects type 'long unsigned int', but argument 5 has type 'int'
set.c: In function 'RecordSetMemoryRequirements':
set.c:413: warning: old-style function definition
set.c: In function 'RecordCreateSet':
set.c:425: warning: old-style function definition
stub.c: In function ‘main’:
stub.c:236: warning: ISO C90 forbids mixed declarations and code
Signed-off-by: Jeremy Huddleston <jeremyhu@freedesktop.org>
Fix a possible crash when pSrc->pDrawable is NULL.
Signed-off-by: Colin Harrison <colin.harrison@virgin.net>
Signed-off-by: Jeremy Huddleston <jeremyhu@freedesktop.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
The rootless extension now directly calls some Xplugin functions, and relies
on types defined in Xplugin.h, which isn't very abstracted :-)
This patch is a start at abstracting some of the Xplugin specific stuff which
has crept into rootlessWindow.c. This has been done in a pretty mindless fashion,
without much thought as to if the additions to the generic rootless interface are
the correct ones
There is some confusion as to if RootlesscolormapCallback() returns a Bool or
xp_error_enum value (not so abstact), but I have no way of checking, of finding
out if Xplugin actually checks the result :-)
Based on patches from Colin Harrison, Jon Turney and Yaakov Selkowitz
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Signed-off-by: Jeremy Huddleston <jeremyhu@freedesktop.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
This fixes the bug whereby we weren't drawing the contents of the root window since RootlessPaintWindowBackground got nuked.
(cherry picked from commit bb0e208787)
