xserver-multidpi/hw/xfree86/loader/extsym.c
Adam Jackson ee21aba6be Fix Xinerama's consolidated visual handling.
Formerly the code claimed it could only handle up to 256 visuals, which
was true.  Also true, but not explicitly stated, was that it could only
handle visuals with VID < 256.  If you have enough screens, and subsystems
that add lots of visuals, you can easily run off the end.  (Made worse
because we allocate visual IDs from the same pool as XIDs.)  If your app
then chooses a visual > 256, then the Xinerama code would throw BadMatch
on CreateColormap and your app wouldn't start.

With this change, PanoramiXVisualTable is gone.  Other subsystems that
were using it as a translation table between each screen's visuals now
use a PanoramiXTranslateVisual() helper.
2008-02-22 15:19:54 -05:00

78 lines
2.4 KiB
C

/*
*
* Copyright 1999-2003 by The XFree86 Project, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of The XFree86 Project, Inc. not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. The XFree86 Project, Inc. makes no
* representations about the suitability of this software for any purpose.
* It is provided "as is" without express or implied warranty.
*
* THE XFREE86 PROJECT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL THE XFREE86 PROJECT, INC. BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include "resource.h"
#include "sym.h"
#include "misc.h"
#ifdef PANORAMIX
#include "panoramiX.h"
#endif
#include "sleepuntil.h"
#ifdef HAS_SHM
extern int ShmCompletionCode;
extern int BadShmSegCode;
extern RESTYPE ShmSegType, ShmPixType;
#endif
#ifdef PANORAMIX
extern Bool noPanoramiXExtension;
extern int PanoramiXNumScreens;
extern PanoramiXData *panoramiXdataPtr;
extern unsigned long XRT_WINDOW;
extern unsigned long XRT_PIXMAP;
extern unsigned long XRT_GC;
extern unsigned long XRT_COLORMAP;
extern unsigned long XRC_DRAWABLE;
extern Bool XineramaRegisterConnectionBlockCallback(void (*func) (void));
extern int XineramaDeleteResource(pointer, XID);
#endif
_X_HIDDEN void *extLookupTab[] = {
SYMFUNC(ClientSleepUntil)
#ifdef HAS_SHM
SYMVAR(ShmCompletionCode)
SYMVAR(BadShmSegCode)
SYMVAR(ShmSegType)
#endif
#ifdef PANORAMIX
SYMFUNC(XineramaRegisterConnectionBlockCallback)
SYMFUNC(XineramaDeleteResource)
SYMVAR(PanoramiXNumScreens)
SYMVAR(panoramiXdataPtr)
SYMVAR(XRT_WINDOW)
SYMVAR(XRT_PIXMAP)
SYMVAR(XRT_GC)
SYMVAR(XRT_COLORMAP)
SYMVAR(XRC_DRAWABLE)
#endif
};