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Dawn of a new world

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Lauri Kasanen 10 years ago
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Makefile
Makefile.in
.deps
.libs
.msg
*.lo
*.la
*.a
*.o
*~
aclocal.m4
autom4te.cache
m4/lt*m4
m4/libtool.m4
compile
config.guess
config.log
config.status
config.sub
configure
depcomp
install-sh
libtool
ltmain.sh
missing
xorg-server.pc
stamp-h?
do-not-use-config.h
do-not-use-config.h.in
kdrive/fbdev/Xfbdev
kdrive/vesa/Xvesa
include/dix-config.h
include/kdrive-config.h
include/xkb-config.h
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COPYING
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GNU GENERAL PUBLIC LICENSE
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under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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Makefile.am
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ACLOCAL_AMFLAGS=-I m4
if DBE
DBE_DIR=dbe
endif
SUBDIRS = \
include \
dix \
fb \
mi \
Xext \
miext \
os \
randr \
render \
$(DBE_DIR) \
xfixes \
damageext \
kdrive
DIST_SUBDIRS = \
include \
dix \
fb \
mi \
Xext \
miext \
os \
randr \
render \
dbe \
xfixes \
damageext \
kdrive

43
README
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Necromancy
==========
We resurrected Xvesa from the depths of git history, and intend to maintain it with Xfbdev.
This includes bugfixes, security fixes, and occasional new features if required.
Why?
----
The TinyX servers fill our needs while being a lot smaller than Xorg can be made.
Why 1.2.0 and not 1.3.0?
------------------------
As you know, Xvesa was killed in 1.4.0, so the latest released version would be 1.3.0.
However, they broke all input in 1.3.0 (keyboard and mouse), so the last working released
version is 1.2.0.
There were also some changes later on that we disagree with (mandatory xinput & xkb).
Design choices
--------------
We aim for the smallest fully featured X server binary. Currently there are the vesa and
fbdev servers, but others may appear in the future (Xmodesetting?).
- no xkb; it's bloat when console keymaps suffice
- no xinput
- no xinerama
- no gl
- TCP listening disabled by default, shadow FB enabled by default
...
Licensing
---------
While the original codebase is MIT, any changes here are GPLv3. Supporting closed devices
with this code is not a goal.

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Xext/Makefile.am
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# libXext.la: includes all extensions and should be linked into Xvfb,
# Xnest, Xdmx and Xprt
# libXextbuiltin.la: includes those extensions that are built directly into
# Xorg by default
# libXextmodule.la: includes those extensions that are built into a module
# that Xorg loads
noinst_LTLIBRARIES = libXext.la
AM_CFLAGS = $(DIX_CFLAGS)
# Sources always included in libXextbuiltin.la & libXext.la
BUILTIN_SRCS = \
shape.c \
sleepuntil.c \
sleepuntil.h \
xtest.c
# Sources always included in libXextmodule.la & libXext.la
MODULE_SRCS = \
bigreq.c \
shape.c \
sync.c \
xcmisc.c
# Optional sources included if extension enabled by configure.ac rules
# MIT Shared Memory extension
MITSHM_SRCS = shm.c shmint.h
BUILTIN_SRCS += $(MITSHM_SRCS)
# XResource extension: lets clients get data about per-client resource usage
RES_SRCS = xres.c
if RES
MODULE_SRCS += $(RES_SRCS)
endif
# MIT ScreenSaver extension
SCREENSAVER_SRCS = saver.c
if SCREENSAVER
MODULE_SRCS += $(SCREENSAVER_SRCS)
endif
# XF86 Big Font extension
BIGFONT_SRCS = xf86bigfont.c xf86bigfontsrv.h
if XF86BIGFONT
BUILTIN_SRCS += $(BIGFONT_SRCS)
endif
# DPMS extension
DPMS_SRCS = dpms.c dpmsproc.h
if DPMSExtension
MODULE_SRCS += $(DPMS_SRCS)
endif
# Now take all of the above, mix well, bake for 10 minutes and get libXext*.la
libXext_la_SOURCES = $(BUILTIN_SRCS) $(MODULE_SRCS)
EXTRA_DIST = \
$(MITSHM_SRCS) \
$(RES_SRCS) \
$(SCREENSAVER_SRCS) \
$(BIGFONT_SRCS) \
$(DPMS_SRCS)

101
Xext/bigreq.c
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/*
Copyright 1992, 1998 The Open Group
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.
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of The Open Group shall
not be used in advertising or otherwise to promote the sale, use or
other dealings in this Software without prior written authorization
from The Open Group.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <X11/X.h>
#include <X11/Xproto.h>
#include "misc.h"
#include "os.h"
#include "dixstruct.h"
#include "extnsionst.h"
#include <X11/extensions/bigreqsproto.h>
#include "opaque.h"
#include "extinit.h"
#if 0
static unsigned char XBigReqCode;
#endif
static void BigReqResetProc(ExtensionEntry * /* extEntry */
);
static DISPATCH_PROC(ProcBigReqDispatch);
void
BigReqExtensionInit(INITARGS)
{
#if 0
ExtensionEntry *extEntry;
if ((extEntry = AddExtension(XBigReqExtensionName, 0, 0,
ProcBigReqDispatch, ProcBigReqDispatch,
BigReqResetProc, StandardMinorOpcode)) != 0)
XBigReqCode = (unsigned char) extEntry->base;
#else
(void) AddExtension(XBigReqExtensionName, 0, 0,
ProcBigReqDispatch, ProcBigReqDispatch,
BigReqResetProc, StandardMinorOpcode);
#endif
DeclareExtensionSecurity(XBigReqExtensionName, TRUE);
}
/*ARGSUSED*/ static void
BigReqResetProc(extEntry)
ExtensionEntry *extEntry;
{
}
static int
ProcBigReqDispatch(client)
ClientPtr client;
{
REQUEST(xBigReqEnableReq);
xBigReqEnableReply rep = {0};
if (client->swapped) {
swaps(&stuff->length);
}
if (stuff->brReqType != X_BigReqEnable)
return BadRequest;
REQUEST_SIZE_MATCH(xBigReqEnableReq);
client->big_requests = TRUE;
rep.type = X_Reply;
rep.length = 0;
rep.sequenceNumber = client->sequence;
rep.max_request_size = maxBigRequestSize;
if (client->swapped) {
swaps(&rep.sequenceNumber);
swapl(&rep.max_request_size);
}
WriteToClient(client, sizeof(xBigReqEnableReply), (char *) &rep);
return (client->noClientException);
}

453
Xext/dpms.c
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/*****************************************************************
Copyright (c) 1996 Digital Equipment Corporation, Maynard, Massachusetts.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software.
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
DIGITAL EQUIPMENT CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES, INCLUDING,
BUT NOT LIMITED TO CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of Digital Equipment Corporation
shall not be used in advertising or otherwise to promote the sale, use or other
dealings in this Software without prior written authorization from Digital
Equipment Corporation.
******************************************************************/
/*
* HISTORY
*
* @(#)RCSfile: dpms.c,v Revision: 1.1.4.5 (DEC) Date: 1996/03/04 15:27:00
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <X11/X.h>
#include <X11/Xproto.h>
#include "misc.h"
#include "os.h"
#include "dixstruct.h"
#include "extnsionst.h"
#include "opaque.h"
#define DPMS_SERVER
#include <X11/extensions/dpms.h>
#include <X11/extensions/dpmsproto.h>
#include "dpmsproc.h"
#include "extinit.h"
#if 0
static unsigned char DPMSCode;
#endif
static DISPATCH_PROC(ProcDPMSDispatch);
static DISPATCH_PROC(SProcDPMSDispatch);
static DISPATCH_PROC(ProcDPMSGetVersion);
static DISPATCH_PROC(SProcDPMSGetVersion);
static DISPATCH_PROC(ProcDPMSGetTimeouts);
static DISPATCH_PROC(SProcDPMSGetTimeouts);
static DISPATCH_PROC(ProcDPMSSetTimeouts);
static DISPATCH_PROC(SProcDPMSSetTimeouts);
static DISPATCH_PROC(ProcDPMSEnable);
static DISPATCH_PROC(SProcDPMSEnable);
static DISPATCH_PROC(ProcDPMSDisable);
static DISPATCH_PROC(SProcDPMSDisable);
static DISPATCH_PROC(ProcDPMSForceLevel);
static DISPATCH_PROC(SProcDPMSForceLevel);
static DISPATCH_PROC(ProcDPMSInfo);
static DISPATCH_PROC(SProcDPMSInfo);
static DISPATCH_PROC(ProcDPMSCapable);
static DISPATCH_PROC(SProcDPMSCapable);
static void DPMSResetProc(ExtensionEntry * extEntry);
void
DPMSExtensionInit(INITARGS)
{
#if 0
ExtensionEntry *extEntry;
if ((extEntry = AddExtension(DPMSExtensionName, 0, 0,
ProcDPMSDispatch, SProcDPMSDispatch,
DPMSResetProc, StandardMinorOpcode)))
DPMSCode = (unsigned char) extEntry->base;
#else
(void) AddExtension(DPMSExtensionName, 0, 0,
ProcDPMSDispatch, SProcDPMSDispatch,
DPMSResetProc, StandardMinorOpcode);
#endif
}
/*ARGSUSED*/ static void
DPMSResetProc(extEntry)
ExtensionEntry *extEntry;
{
}
static int
ProcDPMSGetVersion(client)
ClientPtr client;
{
/* REQUEST(xDPMSGetVersionReq); */
xDPMSGetVersionReply rep;
REQUEST_SIZE_MATCH(xDPMSGetVersionReq);
rep.type = X_Reply;
rep.length = 0;
rep.sequenceNumber = client->sequence;
rep.majorVersion = DPMSMajorVersion;
rep.minorVersion = DPMSMinorVersion;
if (client->swapped) {
swaps(&rep.sequenceNumber);
swaps(&rep.majorVersion);
swaps(&rep.minorVersion);
}
WriteToClient(client, sizeof(xDPMSGetVersionReply), (char *) &rep);
return (client->noClientException);
}
static int
ProcDPMSCapable(register ClientPtr client)
{
/* REQUEST(xDPMSCapableReq); */
xDPMSCapableReply rep;
REQUEST_SIZE_MATCH(xDPMSCapableReq);
rep.type = X_Reply;
rep.length = 0;
rep.sequenceNumber = client->sequence;
rep.capable = DPMSCapableFlag;
if (client->swapped) {
swaps(&rep.sequenceNumber);
}
WriteToClient(client, sizeof(xDPMSCapableReply), (char *) &rep);
return (client->noClientException);
}
static int
ProcDPMSGetTimeouts(client)
ClientPtr client;
{
/* REQUEST(xDPMSGetTimeoutsReq); */
xDPMSGetTimeoutsReply rep;
REQUEST_SIZE_MATCH(xDPMSGetTimeoutsReq);
rep.type = X_Reply;
rep.length = 0;
rep.sequenceNumber = client->sequence;
rep.standby = DPMSStandbyTime / MILLI_PER_SECOND;
rep.suspend = DPMSSuspendTime / MILLI_PER_SECOND;
rep.off = DPMSOffTime / MILLI_PER_SECOND;
if (client->swapped) {
swaps(&rep.sequenceNumber);
swaps(&rep.standby);
swaps(&rep.suspend);
swaps(&rep.off);
}
WriteToClient(client, sizeof(xDPMSGetTimeoutsReply), (char *) &rep);
return (client->noClientException);
}
static int
ProcDPMSSetTimeouts(client)
ClientPtr client;
{
REQUEST(xDPMSSetTimeoutsReq);
REQUEST_SIZE_MATCH(xDPMSSetTimeoutsReq);
if ((stuff->off != 0) && (stuff->off < stuff->suspend)) {
client->errorValue = stuff->off;
return BadValue;
}
if ((stuff->suspend != 0) && (stuff->suspend < stuff->standby)) {
client->errorValue = stuff->suspend;
return BadValue;
}
DPMSStandbyTime = stuff->standby * MILLI_PER_SECOND;
DPMSSuspendTime = stuff->suspend * MILLI_PER_SECOND;
DPMSOffTime = stuff->off * MILLI_PER_SECOND;
SetScreenSaverTimer();
return (client->noClientException);
}
static int
ProcDPMSEnable(client)
ClientPtr client;
{
/* REQUEST(xDPMSEnableReq); */
REQUEST_SIZE_MATCH(xDPMSEnableReq);
if (DPMSCapableFlag)
DPMSEnabled = TRUE;
return (client->noClientException);
}
static int
ProcDPMSDisable(client)
ClientPtr client;
{
/* REQUEST(xDPMSDisableReq); */
REQUEST_SIZE_MATCH(xDPMSDisableReq);
DPMSSet(DPMSModeOn);
DPMSEnabled = FALSE;
return (client->noClientException);
}
static int
ProcDPMSForceLevel(client)
ClientPtr client;
{
REQUEST(xDPMSForceLevelReq);
REQUEST_SIZE_MATCH(xDPMSForceLevelReq);
if (!DPMSEnabled)
return BadMatch;
if (stuff->level == DPMSModeOn) {
lastDeviceEventTime.milliseconds = GetTimeInMillis();
}
else if (stuff->level == DPMSModeStandby) {
lastDeviceEventTime.milliseconds = GetTimeInMillis() - DPMSStandbyTime;
}
else if (stuff->level == DPMSModeSuspend) {
lastDeviceEventTime.milliseconds = GetTimeInMillis() - DPMSSuspendTime;
}
else if (stuff->level == DPMSModeOff) {
lastDeviceEventTime.milliseconds = GetTimeInMillis() - DPMSOffTime;
}
else {
client->errorValue = stuff->level;
return BadValue;
}
DPMSSet(stuff->level);
return (client->noClientException);
}
static int
ProcDPMSInfo(register ClientPtr client)
{
/* REQUEST(xDPMSInfoReq); */
xDPMSInfoReply rep;
REQUEST_SIZE_MATCH(xDPMSInfoReq);
rep.type = X_Reply;
rep.length = 0;
rep.sequenceNumber = client->sequence;
rep.power_level = DPMSPowerLevel;
rep.state = DPMSEnabled;
if (client->swapped) {
swaps(&rep.sequenceNumber);
swaps(&rep.power_level);
}
WriteToClient(client, sizeof(xDPMSInfoReply), (char *) &rep);
return (client->noClientException);
}
static int
ProcDPMSDispatch(client)
ClientPtr client;
{
REQUEST(xReq);
switch (stuff->data) {
case X_DPMSGetVersion:
return ProcDPMSGetVersion(client);
case X_DPMSCapable:
return ProcDPMSCapable(client);
case X_DPMSGetTimeouts:
return ProcDPMSGetTimeouts(client);
case X_DPMSSetTimeouts:
return ProcDPMSSetTimeouts(client);
case X_DPMSEnable:
return ProcDPMSEnable(client);
case X_DPMSDisable:
return ProcDPMSDisable(client);
case X_DPMSForceLevel:
return ProcDPMSForceLevel(client);
case X_DPMSInfo:
return ProcDPMSInfo(client);
default:
return BadRequest;
}
}
static int
SProcDPMSGetVersion(client)
ClientPtr client;
{
REQUEST(xDPMSGetVersionReq);
swaps(&stuff->length);
REQUEST_SIZE_MATCH(xDPMSGetVersionReq);
swaps(&stuff->majorVersion);
swaps(&stuff->minorVersion);
return ProcDPMSGetVersion(client);
}
static int
SProcDPMSCapable(register ClientPtr client)
{
REQUEST(xDPMSCapableReq);
swaps(&stuff->length);
REQUEST_SIZE_MATCH(xDPMSCapableReq);
return ProcDPMSCapable(client);
}
static int
SProcDPMSGetTimeouts(client)
ClientPtr client;
{
REQUEST(xDPMSGetTimeoutsReq);
swaps(&stuff->length);
REQUEST_SIZE_MATCH(xDPMSGetTimeoutsReq);
return ProcDPMSGetTimeouts(client);
}
static int
SProcDPMSSetTimeouts(client)
ClientPtr client;
{
REQUEST(xDPMSSetTimeoutsReq);
swaps(&stuff->length);
REQUEST_SIZE_MATCH(xDPMSSetTimeoutsReq);
swaps(&stuff->standby);
swaps(&stuff->suspend);
swaps(&stuff->off);
return ProcDPMSSetTimeouts(client);
}
static int
SProcDPMSEnable(client)
ClientPtr client;
{
REQUEST(xDPMSEnableReq);
swaps(&stuff->length);
REQUEST_SIZE_MATCH(xDPMSEnableReq);
return ProcDPMSEnable(client);
}
static int
SProcDPMSDisable(client)
ClientPtr client;
{
REQUEST(xDPMSDisableReq);
swaps(&stuff->length);
REQUEST_SIZE_MATCH(xDPMSDisableReq);
return ProcDPMSDisable(client);
}
static int
SProcDPMSForceLevel(client)
ClientPtr client;
{
REQUEST(xDPMSForceLevelReq);
swaps(&stuff->length);
REQUEST_SIZE_MATCH(xDPMSForceLevelReq);
swaps(&stuff->level);
return ProcDPMSForceLevel(client);
}
static int
SProcDPMSInfo(client)
ClientPtr client;
{
REQUEST(xDPMSInfoReq);
swaps(&stuff->length);
REQUEST_SIZE_MATCH(xDPMSInfoReq);
return ProcDPMSInfo(client);
}
static int
SProcDPMSDispatch(client)
ClientPtr client;
{
REQUEST(xReq);
switch (stuff->data) {
case X_DPMSGetVersion:
return SProcDPMSGetVersion(client);
case X_DPMSCapable:
return SProcDPMSCapable(client);
case X_DPMSGetTimeouts:
return SProcDPMSGetTimeouts(client);
case X_DPMSSetTimeouts:
return SProcDPMSSetTimeouts(client);
case X_DPMSEnable:
return SProcDPMSEnable(client);
case X_DPMSDisable:
return SProcDPMSDisable(client);
case X_DPMSForceLevel:
return SProcDPMSForceLevel(client);
case X_DPMSInfo:
return SProcDPMSInfo(client);
default:
return BadRequest;
}
}

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Xext/dpmsproc.h
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/* Prototypes for functions that the DDX must provide */
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#ifndef _DPMSPROC_H_
#define _DPMSPROC_H_
void DPMSSet(int level);
Bool DPMSSupported(void);
#endif

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Xext/shape.c
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991
Xext/shm.c
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/************************************************************
Copyright 1989, 1998 The Open Group
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.
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of The Open Group shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from The Open Group.
********************************************************/
/* THIS IS NOT AN X CONSORTIUM STANDARD OR AN X PROJECT TEAM SPECIFICATION */
#define SHM
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <unistd.h>
#include <sys/stat.h>
#include <X11/X.h>
#include <X11/Xproto.h>
#include "misc.h"
#include "os.h"
#include "dixstruct.h"
#include "resource.h"
#include "scrnintstr.h"
#include "windowstr.h"
#include "pixmapstr.h"
#include "gcstruct.h"
#include "extnsionst.h"
#include "servermd.h"
#define _XSHM_SERVER_
#include <X11/extensions/shmstr.h>
#include <X11/Xfuncproto.h>
#include "extinit.h"
typedef struct _ShmDesc {
struct _ShmDesc *next;
int shmid;
int refcnt;
char *addr;
Bool writable;
unsigned long size;
} ShmDescRec, *ShmDescPtr;
static void miShmPutImage(XSHM_PUT_IMAGE_ARGS);
static void fbShmPutImage(XSHM_PUT_IMAGE_ARGS);
static PixmapPtr fbShmCreatePixmap(XSHM_CREATE_PIXMAP_ARGS);
static int ShmDetachSegment(pointer /* value */ ,
XID /* shmseg */
);
static void ShmResetProc(ExtensionEntry * /* extEntry */
);
static void SShmCompletionEvent(xShmCompletionEvent * /* from */ ,
xShmCompletionEvent * /* to */
);
static Bool ShmDestroyPixmap(PixmapPtr pPixmap);
static DISPATCH_PROC(ProcShmAttach);
static DISPATCH_PROC(ProcShmCreatePixmap);
static DISPATCH_PROC(ProcShmDetach);
static DISPATCH_PROC(ProcShmDispatch);
static DISPATCH_PROC(ProcShmGetImage);
static DISPATCH_PROC(ProcShmPutImage);
static DISPATCH_PROC(ProcShmQueryVersion);
static DISPATCH_PROC(SProcShmAttach);
static DISPATCH_PROC(SProcShmCreatePixmap);
static DISPATCH_PROC(SProcShmDetach);
static DISPATCH_PROC(SProcShmDispatch);
static DISPATCH_PROC(SProcShmGetImage);
static DISPATCH_PROC(SProcShmPutImage);
static DISPATCH_PROC(SProcShmQueryVersion);
static unsigned char ShmReqCode;
_X_EXPORT int ShmCompletionCode;
_X_EXPORT int BadShmSegCode;
_X_EXPORT RESTYPE ShmSegType;
static ShmDescPtr Shmsegs;
static Bool sharedPixmaps;
static int pixmapFormat;
static int shmPixFormat[MAXSCREENS];
static const ShmFuncs * shmFuncs[MAXSCREENS];
static DestroyPixmapProcPtr destroyPixmap[MAXSCREENS];
static int shmPixmapPrivate;
static const ShmFuncs miFuncs = { NULL, miShmPutImage };
static const ShmFuncs fbFuncs = { fbShmCreatePixmap, fbShmPutImage };
#define VERIFY_SHMSEG(shmseg,shmdesc,client) \
{ \
shmdesc = (ShmDescPtr)LookupIDByType(shmseg, ShmSegType); \
if (!shmdesc) \
{ \
client->errorValue = shmseg; \
return BadShmSegCode; \
} \
}
#define VERIFY_SHMPTR(shmseg,offset,needwrite,shmdesc,client) \
{ \
VERIFY_SHMSEG(shmseg, shmdesc, client); \
if ((offset & 3) || (offset > shmdesc->size)) \
{ \
client->errorValue = offset; \
return BadValue; \
} \
if (needwrite && !shmdesc->writable) \
return BadAccess; \
}
#define VERIFY_SHMSIZE(shmdesc,offset,len,client) \
{ \
if ((offset + len) > shmdesc->size) \
{ \
return BadAccess; \
} \
}
#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__CYGWIN__)
#include <sys/signal.h>
static Bool badSysCall = FALSE;
static void
SigSysHandler(signo)
int signo;
{
badSysCall = TRUE;
}
static Bool
CheckForShmSyscall()
{
void (*oldHandler) ();
int shmid = -1;
/* If no SHM support in the kernel, the bad syscall will generate SIGSYS */
oldHandler = signal(SIGSYS, SigSysHandler);
badSysCall = FALSE;
shmid = shmget(IPC_PRIVATE, 4096, IPC_CREAT);
if (shmid != -1) {
/* Successful allocation - clean up */
shmctl(shmid, IPC_RMID, (struct shmid_ds *) NULL);
}
else {
/* Allocation failed */
badSysCall = TRUE;
}
signal(SIGSYS, oldHandler);
return (!badSysCall);
}
#define MUST_CHECK_FOR_SHM_SYSCALL
#endif
void
ShmExtensionInit(INITARGS)
{
ExtensionEntry *extEntry;
int i;
#ifdef MUST_CHECK_FOR_SHM_SYSCALL
if (!CheckForShmSyscall()) {
ErrorF("MIT-SHM extension disabled due to lack of kernel support\n");
return;
}
#endif
sharedPixmaps = xFalse;
pixmapFormat = 0;
{
sharedPixmaps = xTrue;
pixmapFormat = shmPixFormat[0];
for (i = 0; i < screenInfo.numScreens; i++) {
if (!shmFuncs[i])
shmFuncs[i] = &miFuncs;
if (!shmFuncs[i]->CreatePixmap)
sharedPixmaps = xFalse;
if (shmPixFormat[i] && (shmPixFormat[i] != pixmapFormat)) {
sharedPixmaps = xFalse;
pixmapFormat = 0;
}
}
if (!pixmapFormat)
pixmapFormat = ZPixmap;
if (sharedPixmaps) {
for (i = 0; i < screenInfo