xserver xkeyboard-config libxcb xkbcomp mesa git update 5 Apr 2011

1 files changed, 1814 insertions, 1821 deletions

diff --git a/xorg-server/os/utils.c b/xorg-server/os/utils.c
index 30d14460a..36cb46f11 100644
--- a/xorg-server/os/utils.c
+++ b/xorg-server/os/utils.c
@@ -1,1821 +1,1814 @@
-/*

-

-Copyright 1987, 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.

-

-

-Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts,

-Copyright 1994 Quarterdeck Office Systems.

-

-                        All Rights Reserved

-

-Permission to use, copy, modify, and distribute this software and its

-documentation for any purpose and without fee is hereby granted,

-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 names of Digital and

-Quarterdeck not be used in advertising or publicity pertaining to

-distribution of the software without specific, written prior

-permission.

-

-DIGITAL AND QUARTERDECK DISCLAIM ALL WARRANTIES WITH REGARD TO THIS

-SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND

-FITNESS, IN NO EVENT SHALL DIGITAL 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_DIX_CONFIG_H

-#include <dix-config.h>

-#endif

-

-#ifdef __CYGWIN__

-#include <stdlib.h>

-#include <signal.h>

-/*

-   Sigh... We really need a prototype for this to know it is stdcall,

-   but #include-ing <windows.h> here is not a good idea...

-*/

-__stdcall unsigned long GetTickCount(void);

-#endif

-

-#if defined(WIN32) && !defined(__CYGWIN__)

-#include <X11/Xwinsock.h>

-#endif

-#include <X11/Xos.h>

-#include <stdio.h>

-#include <time.h>

-#if !defined(WIN32) || !defined(__MINGW32__)

-#include <sys/time.h>

-#include <sys/resource.h>

-#endif

-#include "misc.h"

-#include <X11/X.h>

-#define XSERV_t

-#define TRANS_SERVER

-#define TRANS_REOPEN

-#include <X11/Xtrans/Xtrans.h>

-#include "input.h"

-#include "dixfont.h"

-#include "osdep.h"

-#include "extension.h"

-#ifdef X_POSIX_C_SOURCE

-#define _POSIX_C_SOURCE X_POSIX_C_SOURCE

-#include <signal.h>

-#undef _POSIX_C_SOURCE

-#else

-#if defined(_POSIX_SOURCE)

-#include <signal.h>

-#else

-#define _POSIX_SOURCE

-#include <signal.h>

-#undef _POSIX_SOURCE

-#endif

-#endif

-#ifndef WIN32

-#include <sys/wait.h>

-#endif

-#if !defined(SYSV) && !defined(WIN32) 

-#include <sys/resource.h>

-#endif

-#include <sys/stat.h>

-#include <ctype.h>    /* for isspace */

-#include <stdarg.h>

-

-#include <stdlib.h>	/* for malloc() */

-

-#if defined(TCPCONN) || defined(STREAMSCONN)

-# ifndef WIN32

-#  include <netdb.h>

-# endif

-#endif

-

-#include "opaque.h"

-

-#include "dixstruct.h"

-

-#include "xkbsrv.h"

-

-#include "picture.h"

-

-Bool noTestExtensions;

-#ifdef COMPOSITE

-Bool noCompositeExtension = FALSE;

-#endif

-

-#ifdef DAMAGE

-Bool noDamageExtension = FALSE;

-#endif

-#ifdef DBE

-Bool noDbeExtension = FALSE;

-#endif

-#ifdef DPMSExtension

-Bool noDPMSExtension = FALSE;

-#endif

-#ifdef GLXEXT

-Bool noGlxExtension = FALSE;

-Bool noGlxVisualInit = FALSE;

-#endif

-#ifdef SCREENSAVER

-Bool noScreenSaverExtension = FALSE;

-#endif

-#ifdef MITSHM

-Bool noMITShmExtension = FALSE;

-#endif

-#ifdef RANDR

-Bool noRRExtension = FALSE;

-#endif

-Bool noRenderExtension = FALSE;

-#ifdef XCSECURITY

-Bool noSecurityExtension = FALSE;

-#endif

-#ifdef RES

-Bool noResExtension = FALSE;

-#endif

-#ifdef XF86BIGFONT

-Bool noXFree86BigfontExtension = FALSE;

-#endif

-#ifdef XFreeXDGA

-Bool noXFree86DGAExtension = FALSE;

-#endif

-#ifdef XF86DRI

-Bool noXFree86DRIExtension = FALSE;

-#endif

-#ifdef XF86VIDMODE

-Bool noXFree86VidModeExtension = FALSE;

-#endif

-#ifdef XFIXES

-Bool noXFixesExtension = FALSE;

-#endif

-#ifdef PANORAMIX

-/* Xinerama is disabled by default unless enabled via +xinerama */

-Bool noPanoramiXExtension = TRUE;

-#endif

-#ifdef XSELINUX

-Bool noSELinuxExtension = FALSE;

-int selinuxEnforcingState = SELINUX_MODE_DEFAULT;

-#endif

-#ifdef XV

-Bool noXvExtension = FALSE;

-#endif

-#ifdef DRI2

-Bool noDRI2Extension = FALSE;

-#endif

-

-Bool noGEExtension = FALSE;

-

-#define X_INCLUDE_NETDB_H

-#include <X11/Xos_r.h>

-

-#include <errno.h>

-

-Bool CoreDump;

-

-#ifdef PANORAMIX

-Bool PanoramiXExtensionDisabledHack = FALSE;

-#endif

-

-int auditTrailLevel = 1;

-

-#if defined(SVR4) || defined(__linux__) || defined(CSRG_BASED)

-#define HAS_SAVED_IDS_AND_SETEUID

-#endif

-

-OsSigHandlerPtr

-OsSignal(int sig, OsSigHandlerPtr handler)

-{

-    struct sigaction act, oact;

-

-    sigemptyset(&act.sa_mask);

-    if (handler != SIG_IGN)

-	sigaddset(&act.sa_mask, sig);

-    act.sa_flags = 0;

-    act.sa_handler = handler;

-    if (sigaction(sig, &act, &oact))

-      perror("sigaction");

-    return oact.sa_handler;

-}

-

-/*

- * Explicit support for a server lock file like the ones used for UUCP.

- * For architectures with virtual terminals that can run more than one

- * server at a time.  This keeps the servers from stomping on each other

- * if the user forgets to give them different display numbers.

- */

-#define LOCK_DIR "/tmp"

-#define LOCK_TMP_PREFIX "/.tX"

-#define LOCK_PREFIX "/.X"

-#define LOCK_SUFFIX "-lock"

-

-static Bool StillLocking = FALSE;

-static char LockFile[PATH_MAX];

-static Bool nolock = FALSE;

-

-/*

- * LockServer --

- *      Check if the server lock file exists.  If so, check if the PID

- *      contained inside is valid.  If so, then die.  Otherwise, create

- *      the lock file containing the PID.

- */

-void

-LockServer(void)

-{

-  char tmp[PATH_MAX], pid_str[12];

-  int lfd, i, haslock, l_pid, t;

-  char *tmppath = NULL;

-  int len;

-  char port[20];

-

-  if (nolock) return;

-  /*

-   * Path names

-   */

-  tmppath = LOCK_DIR;

-

-  sprintf(port, "%d", atoi(display));

-  len = strlen(LOCK_PREFIX) > strlen(LOCK_TMP_PREFIX) ? strlen(LOCK_PREFIX) :

-						strlen(LOCK_TMP_PREFIX);

-  len += strlen(tmppath) + strlen(port) + strlen(LOCK_SUFFIX) + 1;

-  if (len > sizeof(LockFile))

-    FatalError("Display name `%s' is too long\n", port);

-  (void)sprintf(tmp, "%s" LOCK_TMP_PREFIX "%s" LOCK_SUFFIX, tmppath, port);

-  (void)sprintf(LockFile, "%s" LOCK_PREFIX "%s" LOCK_SUFFIX, tmppath, port);

-

-  /*

-   * Create a temporary file containing our PID.  Attempt three times

-   * to create the file.

-   */

-  StillLocking = TRUE;

-  i = 0;

-  do {

-    i++;

-    lfd = open(tmp, O_CREAT | O_EXCL | O_WRONLY, 0644);

-    if (lfd < 0)

-       sleep(2);

-    else

-       break;

-  } while (i < 3);

-  if (lfd < 0) {

-    unlink(tmp);

-    i = 0;

-    do {

-      i++;

-      lfd = open(tmp, O_CREAT | O_EXCL | O_WRONLY, 0644);

-      if (lfd < 0)

-         sleep(2);

-      else

-         break;

-    } while (i < 3);

-  }

-  if (lfd < 0)

-    FatalError("Could not create lock file in %s\n", tmp);

-  (void) sprintf(pid_str, "%10ld\n", (long)getpid());

-  (void) write(lfd, pid_str, 11);

-  (void) chmod(tmp, 0444);

-  (void) close(lfd);

-

-  /*

-   * OK.  Now the tmp file exists.  Try three times to move it in place

-   * for the lock.

-   */

-  i = 0;

-  haslock = 0;

-  while ((!haslock) && (i++ < 3)) {

-    haslock = (link(tmp,LockFile) == 0);

-    if (haslock) {

-      /*

-       * We're done.

-       */

-      break;

-    }

-    else {

-      /*

-       * Read the pid from the existing file

-       */

-      lfd = open(LockFile, O_RDONLY);

-      if (lfd < 0) {

-        unlink(tmp);

-        FatalError("Can't read lock file %s\n", LockFile);

-      }

-      pid_str[0] = '\0';

-      if (read(lfd, pid_str, 11) != 11) {

-        /*

-         * Bogus lock file.

-         */

-        unlink(LockFile);

-        close(lfd);

-        continue;

-      }

-      pid_str[11] = '\0';

-      sscanf(pid_str, "%d", &l_pid);

-      close(lfd);

-

-      /*

-       * Now try to kill the PID to see if it exists.

-       */

-      errno = 0;

-      t = kill(l_pid, 0);

-      if ((t< 0) && (errno == ESRCH)) {

-        /*

-         * Stale lock file.

-         */

-        unlink(LockFile);

-        continue;

-      }

-      else if (((t < 0) && (errno == EPERM)) || (t == 0)) {

-        /*

-         * Process is still active.

-         */

-        unlink(tmp);

-	FatalError("Server is already active for display %s\n%s %s\n%s\n",

-		   port, "\tIf this server is no longer running, remove",

-		   LockFile, "\tand start again.");

-      }

-    }

-  }

-  unlink(tmp);

-  if (!haslock)

-    FatalError("Could not create server lock file: %s\n", LockFile);

-  StillLocking = FALSE;

-}

-

-/*

- * UnlockServer --

- *      Remove the server lock file.

- */

-void

-UnlockServer(void)

-{

-  if (nolock) return;

-

-  if (!StillLocking){

-

-  (void) unlink(LockFile);

-  }

-}

-

-/* Force connections to close on SIGHUP from init */

-

-void

-AutoResetServer (int sig)

-{

-    int olderrno = errno;

-

-    dispatchException |= DE_RESET;

-    isItTimeToYield = TRUE;

-    errno = olderrno;

-}

-

-/* Force connections to close and then exit on SIGTERM, SIGINT */

-

-void

-GiveUp(int sig)

-{

-    int olderrno = errno;

-

-    dispatchException |= DE_TERMINATE;

-    isItTimeToYield = TRUE;

-    errno = olderrno;

-}

-

-#if (defined WIN32 && defined __MINGW32__) || defined(__CYGWIN__)

-CARD32

-GetTimeInMillis (void)

-{

-  return GetTickCount ();

-}

-#else

-CARD32

-GetTimeInMillis(void)

-{

-    struct timeval tv;

-

-#ifdef MONOTONIC_CLOCK

-    struct timespec tp;

-    static clockid_t clockid;

-    if (!clockid) {

-#ifdef CLOCK_MONOTONIC_COARSE

-        if (clock_getres(CLOCK_MONOTONIC_COARSE, &tp) == 0 &&

-            (tp.tv_nsec / 1000) <= 1000 &&

-            clock_gettime(CLOCK_MONOTONIC_COARSE, &tp) == 0)

-            clockid = CLOCK_MONOTONIC_COARSE;

-        else

-#endif

-        if (clock_gettime(CLOCK_MONOTONIC, &tp) == 0)

-            clockid = CLOCK_MONOTONIC;

-        else

-            clockid = ~0L;

-    }

-    if (clockid != ~0L && clock_gettime(clockid, &tp) == 0)

-        return (tp.tv_sec * 1000) + (tp.tv_nsec / 1000000L);

-#endif

-

-    X_GETTIMEOFDAY(&tv);

-    return(tv.tv_sec * 1000) + (tv.tv_usec / 1000);

-}

-#endif

-

-void

-AdjustWaitForDelay (pointer waitTime, unsigned long newdelay)

-{

-    static struct timeval   delay_val;

-    struct timeval	    **wt = (struct timeval **) waitTime;

-    unsigned long	    olddelay;

-

-    if (*wt == NULL)

-    {

-	delay_val.tv_sec = newdelay / 1000;

-	delay_val.tv_usec = 1000 * (newdelay % 1000);

-	*wt = &delay_val;

-    }

-    else

-    {

-	olddelay = (*wt)->tv_sec * 1000 + (*wt)->tv_usec / 1000;

-	if (newdelay < olddelay)

-	{

-	    (*wt)->tv_sec = newdelay / 1000;

-	    (*wt)->tv_usec = 1000 * (newdelay % 1000);

-	}

-    }

-}

-

-void UseMsg(void)

-{

-    ErrorF("use: X [:<display>] [option]\n");

-    ErrorF("-a #                   default pointer acceleration (factor)\n");

-    ErrorF("-ac                    disable access control restrictions\n");

-    ErrorF("-audit int             set audit trail level\n");	

-    ErrorF("-auth file             select authorization file\n");	

-    ErrorF("-br                    create root window with black background\n");

-    ErrorF("+bs                    enable any backing store support\n");

-    ErrorF("-bs                    disable any backing store support\n");

-    ErrorF("-c                     turns off key-click\n");

-    ErrorF("c #                    key-click volume (0-100)\n");

-    ErrorF("-cc int                default color visual class\n");

-    ErrorF("-nocursor              disable the cursor\n");

-    ErrorF("-core                  generate core dump on fatal error\n");

-    ErrorF("-dpi int               screen resolution in dots per inch\n");

-#ifdef DPMSExtension

-    ErrorF("-dpms                  disables VESA DPMS monitor control\n");

-#endif

-    ErrorF("-deferglyphs [none|all|16] defer loading of [no|all|16-bit] glyphs\n");

-    ErrorF("-f #                   bell base (0-100)\n");

-    ErrorF("-fc string             cursor font\n");

-    ErrorF("-fn string             default font name\n");

-    ErrorF("-fp string             default font path\n");

-    ErrorF("-help                  prints message with these options\n");

-    ErrorF("-I                     ignore all remaining arguments\n");

-#ifdef RLIMIT_DATA

-    ErrorF("-ld int                limit data space to N Kb\n");

-#endif

-#ifdef RLIMIT_NOFILE

-    ErrorF("-lf int                limit number of open files to N\n");

-#endif

-#ifdef RLIMIT_STACK

-    ErrorF("-ls int                limit stack space to N Kb\n");

-#endif

-    ErrorF("-nolock                disable the locking mechanism\n");

-    ErrorF("-nolisten string       don't listen on protocol\n");

-    ErrorF("-noreset               don't reset after last client exists\n");

-    ErrorF("-background [none]     create root window with no background\n");

-    ErrorF("-reset                 reset after last client exists\n");

-    ErrorF("-p #                   screen-saver pattern duration (minutes)\n");

-    ErrorF("-pn                    accept failure to listen on all ports\n");

-    ErrorF("-nopn                  reject failure to listen on all ports\n");

-    ErrorF("-r                     turns off auto-repeat\n");

-    ErrorF("r                      turns on auto-repeat \n");

-    ErrorF("-render [default|mono|gray|color] set render color alloc policy\n");

-    ErrorF("-retro                 start with classic stipple and cursor\n");

-    ErrorF("-s #                   screen-saver timeout (minutes)\n");

-    ErrorF("-t #                   default pointer threshold (pixels/t)\n");

-    ErrorF("-terminate             terminate at server reset\n");

-    ErrorF("-to #                  connection time out\n");

-    ErrorF("-tst                   disable testing extensions\n");

-    ErrorF("ttyxx                  server started from init on /dev/ttyxx\n");

-    ErrorF("v                      video blanking for screen-saver\n");

-    ErrorF("-v                     screen-saver without video blanking\n");

-    ErrorF("-wm                    WhenMapped default backing-store\n");

-    ErrorF("-wr                    create root window with white background\n");

-    ErrorF("-maxbigreqsize         set maximal bigrequest size \n");

-#ifdef PANORAMIX

-    ErrorF("+xinerama              Enable XINERAMA extension\n");

-    ErrorF("-xinerama              Disable XINERAMA extension\n");

-#endif

-    ErrorF("-dumbSched             Disable smart scheduling, enable old behavior\n");

-    ErrorF("-schedInterval int     Set scheduler interval in msec\n");

-    ErrorF("-sigstop               Enable SIGSTOP based startup\n");

-    ErrorF("+extension name        Enable extension\n");

-    ErrorF("-extension name        Disable extension\n");

-#ifdef XDMCP

-    XdmcpUseMsg();

-#endif

-    XkbUseMsg();

-    ddxUseMsg();

-}

-

-/*  This function performs a rudimentary sanity check

- *  on the display name passed in on the command-line,

- *  since this string is used to generate filenames.

- *  It is especially important that the display name

- *  not contain a "/" and not start with a "-".

- *                                            --kvajk

- */

-static int 

-VerifyDisplayName(const char *d)

-{

-    if ( d == (char *)0 ) return 0;  /*  null  */

-    if ( *d == '\0' ) return 0;  /*  empty  */

-    if ( *d == '-' ) return 0;  /*  could be confused for an option  */

-    if ( *d == '.' ) return 0;  /*  must not equal "." or ".."  */

-    if ( strchr(d, '/') != (char *)0 ) return 0;  /*  very important!!!  */

-    return 1;

-}

-

-/*

- * This function parses the command line. Handles device-independent fields

- * and allows ddx to handle additional fields.  It is not allowed to modify

- * argc or any of the strings pointed to by argv.

- */

-void

-ProcessCommandLine(int argc, char *argv[])

-{

-    int i, skip;

-

-    defaultKeyboardControl.autoRepeat = TRUE;

-

-#ifdef NO_PART_NET

-    PartialNetwork = FALSE;

-#else

-    PartialNetwork = TRUE;

-#endif

-

-    for ( i = 1; i < argc; i++ )

-    {

-	/* call ddx first, so it can peek/override if it wants */

-        if((skip = ddxProcessArgument(argc, argv, i)))

-	{

-	    i += (skip - 1);

-	}

-	else if(argv[i][0] ==  ':')  

-	{

-	    /* initialize display */

-	    display = argv[i];

-	    display++;

-            if( ! VerifyDisplayName( display ) ) {

-                ErrorF("Bad display name: %s\n", display);

-                UseMsg();

-		FatalError("Bad display name, exiting: %s\n", display);

-            }

-	}

-	else if ( strcmp( argv[i], "-a") == 0)

-	{

-	    if(++i < argc)

-	        defaultPointerControl.num = atoi(argv[i]);

-	    else

-		UseMsg();

-	}

-	else if ( strcmp( argv[i], "-ac") == 0)

-	{

-	    defeatAccessControl = TRUE;

-	}

-	else if ( strcmp( argv[i], "-audit") == 0)

-	{

-	    if(++i < argc)

-	        auditTrailLevel = atoi(argv[i]);

-	    else

-		UseMsg();

-	}

-	else if ( strcmp( argv[i], "-auth") == 0)

-	{

-	    if(++i < argc)

-	        InitAuthorization (argv[i]);

-	    else

-		UseMsg();

-	}

-	else if ( strcmp( argv[i], "-br") == 0) ; /* default */

-	else if ( strcmp( argv[i], "+bs") == 0)

-	    enableBackingStore = TRUE;

-	else if ( strcmp( argv[i], "-bs") == 0)

-	    disableBackingStore = TRUE;

-	else if ( strcmp( argv[i], "c") == 0)

-	{

-	    if(++i < argc)

-	        defaultKeyboardControl.click = atoi(argv[i]);

-	    else

-		UseMsg();

-	}

-	else if ( strcmp( argv[i], "-c") == 0)

-	{

-	    defaultKeyboardControl.click = 0;

-	}

-	else if ( strcmp( argv[i], "-cc") == 0)

-	{

-	    if(++i < argc)

-	        defaultColorVisualClass = atoi(argv[i]);

-	    else

-		UseMsg();

-	}

-	else if ( strcmp( argv[i], "-core") == 0)

-	{

-#if !defined(WIN32) || !defined(__MINGW32__)

-	    struct rlimit   core_limit;

-	    getrlimit (RLIMIT_CORE, &core_limit);

-	    core_limit.rlim_cur = core_limit.rlim_max;

-	    setrlimit (RLIMIT_CORE, &core_limit);

-#endif

-	    CoreDump = TRUE;

-	}

-        else if ( strcmp( argv[i], "-nocursor") == 0)

-        {

-            EnableCursor = FALSE;

-        }

-        else if ( strcmp( argv[i], "-dpi") == 0)

-	{

-	    if(++i < argc)

-	        monitorResolution = atoi(argv[i]);

-	    else

-		UseMsg();

-	}

-#ifdef DPMSExtension

-	else if ( strcmp( argv[i], "dpms") == 0)

-	    /* ignored for compatibility */ ;

-	else if ( strcmp( argv[i], "-dpms") == 0)

-	    DPMSDisabledSwitch = TRUE;

-#endif

-	else if ( strcmp( argv[i], "-deferglyphs") == 0)

-	{

-	    if(++i >= argc || !ParseGlyphCachingMode(argv[i]))

-		UseMsg();

-	}

-	else if ( strcmp( argv[i], "-f") == 0)

-	{

-	    if(++i < argc)

-	        defaultKeyboardControl.bell = atoi(argv[i]);

-	    else

-		UseMsg();

-	}

-	else if ( strcmp( argv[i], "-fc") == 0)

-	{

-	    if(++i < argc)

-	        defaultCursorFont = argv[i];

-	    else

-		UseMsg();

-	}

-	else if ( strcmp( argv[i], "-fn") == 0)

-	{

-	    if(++i < argc)

-	        defaultTextFont = argv[i];

-	    else

-		UseMsg();

-	}

-	else if ( strcmp( argv[i], "-fp") == 0)

-	{

-	    if(++i < argc)

-	    {

-	        defaultFontPath = argv[i];

-	    }

-	    else

-		UseMsg();

-	}

-	else if ( strcmp( argv[i], "-help") == 0)

-	{

-	    UseMsg();

-	    exit(0);

-	}

-        else if ( (skip=XkbProcessArguments(argc,argv,i))!=0 ) {

-	    if (skip>0)

-		 i+= skip-1;

-	    else UseMsg();

-	}

-#ifdef RLIMIT_DATA

-	else if ( strcmp( argv[i], "-ld") == 0)

-	{

-	    if(++i < argc)

-	    {

-	        limitDataSpace = atoi(argv[i]);

-		if (limitDataSpace > 0)

-		    limitDataSpace *= 1024;

-	    }

-	    else

-		UseMsg();

-	}

-#endif

-#ifdef RLIMIT_NOFILE

-	else if ( strcmp( argv[i], "-lf") == 0)

-	{

-	    if(++i < argc)

-	        limitNoFile = atoi(argv[i]);

-	    else

-		UseMsg();

-	}

-#endif

-#ifdef RLIMIT_STACK

-	else if ( strcmp( argv[i], "-ls") == 0)

-	{

-	    if(++i < argc)

-	    {

-	        limitStackSpace = atoi(argv[i]);

-		if (limitStackSpace > 0)

-		    limitStackSpace *= 1024;

-	    }

-	    else

-		UseMsg();

-	}

-#endif

-	else if ( strcmp ( argv[i], "-nolock") == 0)

-	{

-#if !defined(WIN32) && !defined(__CYGWIN__)

-	  if (getuid() != 0)

-	    ErrorF("Warning: the -nolock option can only be used by root\n");

-	  else

-#endif

-	    nolock = TRUE;

-	}

-	else if ( strcmp( argv[i], "-nolisten") == 0)

-	{

-            if(++i < argc) {

-		if (_XSERVTransNoListen(argv[i])) 

-		    FatalError ("Failed to disable listen for %s transport",

-				argv[i]);

-	   } else

-		UseMsg();

-	}

-	else if ( strcmp( argv[i], "-noreset") == 0)

-	{

-	    dispatchExceptionAtReset = 0;

-	}

-	else if ( strcmp( argv[i], "-reset") == 0)

-	{

-	    dispatchExceptionAtReset = DE_RESET;

-	}

-	else if ( strcmp( argv[i], "-p") == 0)

-	{

-	    if(++i < argc)

-	        defaultScreenSaverInterval = ((CARD32)atoi(argv[i])) *

-					     MILLI_PER_MIN;

-	    else

-		UseMsg();

-	}

-	else if (strcmp(argv[i], "-pogo") == 0)

-	{

-	    dispatchException = DE_TERMINATE;

-	}

-	else if ( strcmp( argv[i], "-pn") == 0)

-	    PartialNetwork = TRUE;

-	else if ( strcmp( argv[i], "-nopn") == 0)

-	    PartialNetwork = FALSE;

-	else if ( strcmp( argv[i], "r") == 0)

-	    defaultKeyboardControl.autoRepeat = TRUE;

-	else if ( strcmp( argv[i], "-r") == 0)

-	    defaultKeyboardControl.autoRepeat = FALSE;

-	else if ( strcmp( argv[i], "-retro") == 0)

-	    party_like_its_1989 = TRUE;

-	else if ( strcmp( argv[i], "-s") == 0)

-	{

-	    if(++i < argc)

-	        defaultScreenSaverTime = ((CARD32)atoi(argv[i])) *

-					 MILLI_PER_MIN;

-	    else

-		UseMsg();

-	}

-	else if ( strcmp( argv[i], "-t") == 0)

-	{

-	    if(++i < argc)

-	        defaultPointerControl.threshold = atoi(argv[i]);

-	    else

-		UseMsg();

-	}

-	else if ( strcmp( argv[i], "-terminate") == 0)

-	{

-	    dispatchExceptionAtReset = DE_TERMINATE;

-	}

-	else if ( strcmp( argv[i], "-to") == 0)

-	{

-	    if(++i < argc)

-		TimeOutValue = ((CARD32)atoi(argv[i])) * MILLI_PER_SECOND;

-	    else

-		UseMsg();

-	}

-	else if ( strcmp( argv[i], "-tst") == 0)

-	{

-	    noTestExtensions = TRUE;

-	}

-	else if ( strcmp( argv[i], "v") == 0)

-	    defaultScreenSaverBlanking = PreferBlanking;

-	else if ( strcmp( argv[i], "-v") == 0)

-	    defaultScreenSaverBlanking = DontPreferBlanking;

-	else if ( strcmp( argv[i], "-wm") == 0)

-	    defaultBackingStore = WhenMapped;

-        else if ( strcmp( argv[i], "-wr") == 0)

-            whiteRoot = TRUE;

-        else if ( strcmp( argv[i], "-background") == 0) {

-            if(++i < argc) {

-                if (!strcmp ( argv[i], "none"))

-                    bgNoneRoot = TRUE;

-                else

-                    UseMsg();

-            }

-        }

-        else if ( strcmp( argv[i], "-maxbigreqsize") == 0) {

-             if(++i < argc) {

-                 long reqSizeArg = atol(argv[i]);

-

-                 /* Request size > 128MB does not make much sense... */

-                 if( reqSizeArg > 0L && reqSizeArg < 128L ) {

-                     maxBigRequestSize = (reqSizeArg * 1048576L) - 1L;

-                 }

-                 else

-                 {

-                     UseMsg();

-                 }

-             }

-             else

-             {

-                 UseMsg();

-             }

-         }

-#ifdef PANORAMIX

-	else if ( strcmp( argv[i], "+xinerama") == 0){

-	    noPanoramiXExtension = FALSE;

-	}

-	else if ( strcmp( argv[i], "-xinerama") == 0){

-	    noPanoramiXExtension = TRUE;

-	}

-	else if ( strcmp( argv[i], "-disablexineramaextension") == 0){

-	    PanoramiXExtensionDisabledHack = TRUE;

-	}

-#endif

-	else if ( strcmp( argv[i], "-I") == 0)

-	{

-	    /* ignore all remaining arguments */

-	    break;

-	}

-	else if (strncmp (argv[i], "tty", 3) == 0)

-	{

-            /* init supplies us with this useless information */

-	}

-#ifdef XDMCP

-	else if ((skip = XdmcpOptions(argc, argv, i)) != i)

-	{

-	    i = skip - 1;

-	}

-#endif

-	else if ( strcmp( argv[i], "-dumbSched") == 0)

-	{

-	    SmartScheduleDisable = TRUE;

-	}

-	else if ( strcmp( argv[i], "-schedInterval") == 0)

-	{

-	    if (++i < argc)

-	    {

-		SmartScheduleInterval = atoi(argv[i]);

-		SmartScheduleSlice = SmartScheduleInterval;

-	    }

-	    else

-		UseMsg();

-	}

-	else if ( strcmp( argv[i], "-schedMax") == 0)

-	{

-	    if (++i < argc)

-	    {

-		SmartScheduleMaxSlice = atoi(argv[i]);

-	    }

-	    else

-		UseMsg();

-	}

-	else if ( strcmp( argv[i], "-render" ) == 0)

-	{

-	    if (++i < argc)

-	    {

-		int policy = PictureParseCmapPolicy (argv[i]);

-

-		if (policy != PictureCmapPolicyInvalid)

-		    PictureCmapPolicy = policy;

-		else

-		    UseMsg ();

-	    }

-	    else

-		UseMsg ();

-	}

-	else if ( strcmp( argv[i], "-sigstop") == 0)

-	{

-	    RunFromSigStopParent = TRUE;

-	}

-	else if ( strcmp( argv[i], "+extension") == 0)

-	{

-	    if (++i < argc)

-	    {

-		if (!EnableDisableExtension(argv[i], TRUE))

-		    EnableDisableExtensionError(argv[i], TRUE);

-	    }

-	    else

-		UseMsg();

-	}

-	else if ( strcmp( argv[i], "-extension") == 0)

-	{

-	    if (++i < argc)

-	    {

-		if (!EnableDisableExtension(argv[i], FALSE))

-		    EnableDisableExtensionError(argv[i], FALSE);

-	    }

-	    else

-		UseMsg();

-	}

- 	else

- 	{

-	    ErrorF("Unrecognized option: %s\n", argv[i]);

-	    UseMsg();

-	    FatalError("Unrecognized option: %s\n", argv[i]);

-        }

-    }

-}

-

-/* Implement a simple-minded font authorization scheme.  The authorization

-   name is "hp-hostname-1", the contents are simply the host name. */

-int

-set_font_authorizations(char **authorizations, int *authlen, pointer client)

-{

-#define AUTHORIZATION_NAME "hp-hostname-1"

-#if defined(TCPCONN) || defined(STREAMSCONN)

-    static char *result = NULL;

-    static char *p = NULL;

-

-    if (p == NULL)

-    {

-	char hname[1024], *hnameptr;

-	unsigned int len;

-#if defined(IPv6) && defined(AF_INET6)

-	struct addrinfo hints, *ai = NULL;

-#else

-	struct hostent *host;

-#ifdef XTHREADS_NEEDS_BYNAMEPARAMS

-	_Xgethostbynameparams hparams;

-#endif

-#endif

-

-	gethostname(hname, 1024);

-#if defined(IPv6) && defined(AF_INET6)

-	memset(&hints, 0, sizeof(hints));

-	hints.ai_flags = AI_CANONNAME;

-	if (getaddrinfo(hname, NULL, &hints, &ai) == 0) {

-	    hnameptr = ai->ai_canonname;

-	} else {

-	    hnameptr = hname;

-	}

-#else

-	host = _XGethostbyname(hname, hparams);

-	if (host == NULL)

-	    hnameptr = hname;

-	else

-	    hnameptr = host->h_name;

-#endif

-

-	len = strlen(hnameptr) + 1;

-	result = malloc(len + sizeof(AUTHORIZATION_NAME) + 4);

-

-	p = result;

-        *p++ = sizeof(AUTHORIZATION_NAME) >> 8;

-        *p++ = sizeof(AUTHORIZATION_NAME) & 0xff;

-        *p++ = (len) >> 8;

-        *p++ = (len & 0xff);

-

-	memmove(p, AUTHORIZATION_NAME, sizeof(AUTHORIZATION_NAME));

-	p += sizeof(AUTHORIZATION_NAME);

-	memmove(p, hnameptr, len);

-	p += len;

-#if defined(IPv6) && defined(AF_INET6)

-	if (ai) {

-	    freeaddrinfo(ai);

-	}

-#endif

-    }

-    *authlen = p - result;

-    *authorizations = result;

-    return 1;

-#else /* TCPCONN */

-    return 0;

-#endif /* TCPCONN */

-}

-

-void *

-Xalloc(unsigned long amount)

-{

-    /*

-     * Xalloc used to return NULL when large amount of memory is requested. In

-     * order to catch the buggy callers this warning has been added, slated to

-     * removal by anyone who touches this code (or just looks at it) in 2011.

-     *

-     * -- Mikhail Gusarov

-     */

-    if ((long)amount <= 0)

-	ErrorF("Warning: Xalloc: "

-	       "requesting unpleasantly large amount of memory: %lu bytes.\n",

-               amount);

-

-    return malloc(amount);

-}

-

-void *

-XNFalloc(unsigned long amount)

-{

-    void *ptr = malloc(amount);

-    if (!ptr)

-        FatalError("Out of memory");

-    return ptr;

-}

-

-void *

-Xcalloc(unsigned long amount)

-{

-    return calloc(1, amount);

-}

-

-void *

-XNFcalloc(unsigned long amount)

-{

-    void *ret = calloc(1, amount);

-    if (!ret)

-        FatalError("XNFcalloc: Out of memory");

-    return ret;

-}

-

-void *

-Xrealloc(void *ptr, unsigned long amount)

-{

-    /*

-     * Xrealloc used to return NULL when large amount of memory is requested. In

-     * order to catch the buggy callers this warning has been added, slated to

-     * removal by anyone who touches this code (or just looks at it) in 2011.

-     *

-     * -- Mikhail Gusarov

-     */

-    if ((long)amount <= 0)

-	ErrorF("Warning: Xrealloc: "

-	       "requesting unpleasantly large amount of memory: %lu bytes.\n",

-               amount);

-

-    return realloc(ptr, amount);

-}

-

-void *

-XNFrealloc(void *ptr, unsigned long amount)

-{

-    void *ret = realloc(ptr, amount);

-    if (!ret)

-	FatalError("XNFrealloc: Out of memory");

-    return ret;

-}

-

-void

-Xfree(void *ptr)

-{

-    free(ptr);

-}

-

-

-char *

-Xstrdup(const char *s)

-{

-    if (s == NULL)

-	return NULL;

-    return strdup(s);

-}

-

-char *

-XNFstrdup(const char *s)

-{

-    char *ret;

-

-    if (s == NULL)

-	return NULL;

-

-    ret = strdup(s);

-    if (!ret)

-	FatalError("XNFstrdup: Out of memory");

-    return ret;

-}

-

-void

-SmartScheduleStopTimer (void)

-{

-    struct itimerval	timer;

-    

-    if (SmartScheduleDisable)

-	return;

-    timer.it_interval.tv_sec = 0;

-    timer.it_interval.tv_usec = 0;

-    timer.it_value.tv_sec = 0;

-    timer.it_value.tv_usec = 0;

-    (void) setitimer (ITIMER_REAL, &timer, 0);

-}

-

-void

-SmartScheduleStartTimer (void)

-{

-    struct itimerval	timer;

-    

-    if (SmartScheduleDisable)

-	return;

-    timer.it_interval.tv_sec = 0;

-    timer.it_interval.tv_usec = SmartScheduleInterval * 1000;

-    timer.it_value.tv_sec = 0;

-    timer.it_value.tv_usec = SmartScheduleInterval * 1000;

-    setitimer (ITIMER_REAL, &timer, 0);

-}

-

-static void

-SmartScheduleTimer (int sig)

-{

-    SmartScheduleTime += SmartScheduleInterval;

-}

-

-void

-SmartScheduleInit (void)

-{

-    struct sigaction	act;

-

-    if (SmartScheduleDisable)

-	return;

-

-    memset((char *) &act, 0, sizeof(struct sigaction));

-

-    /* Set up the timer signal function */

-    act.sa_handler = SmartScheduleTimer;

-    sigemptyset (&act.sa_mask);

-    sigaddset (&act.sa_mask, SIGALRM);

-    if (sigaction (SIGALRM, &act, 0) < 0)

-    {

-	perror ("sigaction for smart scheduler");

-	SmartScheduleDisable = TRUE;

-    }

-}

-

-#ifdef SIG_BLOCK

-static sigset_t	PreviousSignalMask;

-static int	BlockedSignalCount;

-#endif

-

-void

-OsBlockSignals (void)

-{

-#ifdef SIG_BLOCK

-    if (BlockedSignalCount++ == 0)

-    {

-	sigset_t    set;

-	

-	sigemptyset (&set);

-	sigaddset (&set, SIGALRM);

-	sigaddset (&set, SIGVTALRM);

-#ifdef SIGWINCH

-	sigaddset (&set, SIGWINCH);

-#endif

-#ifdef SIGIO

-	sigaddset (&set, SIGIO);

-#endif

-	sigaddset (&set, SIGTSTP);

-	sigaddset (&set, SIGTTIN);

-	sigaddset (&set, SIGTTOU);

-	sigaddset (&set, SIGCHLD);

-	sigprocmask (SIG_BLOCK, &set, &PreviousSignalMask);

-    }

-#endif

-}

-

-void

-OsReleaseSignals (void)

-{

-#ifdef SIG_BLOCK

-    if (--BlockedSignalCount == 0)

-    {

-	sigprocmask (SIG_SETMASK, &PreviousSignalMask, 0);

-    }

-#endif

-}

-

-/*

- * Pending signals may interfere with core dumping. Provide a

- * mechanism to block signals when aborting.

- */

-

-void

-OsAbort (void)

-{

-#ifndef __APPLE__

-    OsBlockSignals();

-#endif

-    abort();

-}

-

-#if !defined(WIN32)

-/*

- * "safer" versions of system(3), popen(3) and pclose(3) which give up

- * all privs before running a command.

- *

- * This is based on the code in FreeBSD 2.2 libc.

- *

- * XXX It'd be good to redirect stderr so that it ends up in the log file

- * as well.  As it is now, xkbcomp messages don't end up in the log file.

- */

-

-int

-System(char *command)

-{

-    int pid, p;

-    void (*csig)(int);

-    int status;

-

-    if (!command)

-	return 1;

-

-    csig = signal(SIGCHLD, SIG_DFL);

-    if (csig == SIG_ERR) {

-      perror("signal");

-      return -1;

-    }

-

-#ifdef DEBUG

-    ErrorF("System: `%s'\n", command);

-#endif

-

-    switch (pid = fork()) {

-    case -1:	/* error */

-	p = -1;

-    case 0:	/* child */

-	if (setgid(getgid()) == -1)

-	    _exit(127);

-	if (setuid(getuid()) == -1)

-	    _exit(127);

-	execl("/bin/sh", "sh", "-c", command, (char *)NULL);

-	_exit(127);

-    default:	/* parent */

-	do {

-	    p = waitpid(pid, &status, 0);

-	} while (p == -1 && errno == EINTR);

-	

-    }

-

-    if (signal(SIGCHLD, csig) == SIG_ERR) {

-      perror("signal");

-      return -1;

-    }

-

-    return p == -1 ? -1 : status;

-}

-

-static struct pid {

-    struct pid *next;

-    FILE *fp;

-    int pid;

-} *pidlist;

-

-OsSigHandlerPtr old_alarm = NULL; /* XXX horrible awful hack */

-

-pointer

-Popen(char *command, char *type)

-{

-    struct pid *cur;

-    FILE *iop;

-    int pdes[2], pid;

-

-    if (command == NULL || type == NULL)

-	return NULL;

-

-    if ((*type != 'r' && *type != 'w') || type[1])

-	return NULL;

-

-    if ((cur = malloc(sizeof(struct pid))) == NULL)

-	return NULL;

-

-    if (pipe(pdes) < 0) {

-	free(cur);

-	return NULL;

-    }

-

-    /* Ignore the smart scheduler while this is going on */

-    old_alarm = OsSignal(SIGALRM, SIG_IGN);

-    if (old_alarm == SIG_ERR) {

-      perror("signal");

-      return NULL;

-    }

-

-    switch (pid = fork()) {

-    case -1: 	/* error */

-	close(pdes[0]);

-	close(pdes[1]);

-	free(cur);

-	if (OsSignal(SIGALRM, old_alarm) == SIG_ERR)

-	  perror("signal");

-	return NULL;

-    case 0:	/* child */

-	if (setgid(getgid()) == -1)

-	    _exit(127);

-	if (setuid(getuid()) == -1)

-	    _exit(127);

-	if (*type == 'r') {

-	    if (pdes[1] != 1) {

-		/* stdout */

-		dup2(pdes[1], 1);

-		close(pdes[1]);

-	    }

-	    close(pdes[0]);

-	} else {

-	    if (pdes[0] != 0) {

-		/* stdin */

-		dup2(pdes[0], 0);

-		close(pdes[0]);

-	    }

-	    close(pdes[1]);

-	}

-	execl("/bin/sh", "sh", "-c", command, (char *)NULL);

-	_exit(127);

-    }

-

-    /* Avoid EINTR during stdio calls */

-    OsBlockSignals ();

-    

-    /* parent */

-    if (*type == 'r') {

-	iop = fdopen(pdes[0], type);

-	close(pdes[1]);

-    } else {

-	iop = fdopen(pdes[1], type);

-	close(pdes[0]);

-    }

-

-    cur->fp = iop;

-    cur->pid = pid;

-    cur->next = pidlist;

-    pidlist = cur;

-

-#ifdef DEBUG

-    ErrorF("Popen: `%s', fp = %p\n", command, iop);

-#endif

-

-    return iop;

-}

-

-/* fopen that drops privileges */

-pointer

-Fopen(char *file, char *type)

-{

-    FILE *iop;

-#ifndef HAS_SAVED_IDS_AND_SETEUID

-    struct pid *cur;

-    int pdes[2], pid;

-

-    if (file == NULL || type == NULL)

-	return NULL;

-

-    if ((*type != 'r' && *type != 'w') || type[1])

-	return NULL;

-

-    if ((cur = malloc(sizeof(struct pid))) == NULL)

-	return NULL;

-

-    if (pipe(pdes) < 0) {

-	free(cur);

-	return NULL;

-    }

-

-    switch (pid = fork()) {

-    case -1: 	/* error */

-	close(pdes[0]);

-	close(pdes[1]);

-	free(cur);

-	return NULL;

-    case 0:	/* child */

-	if (setgid(getgid()) == -1)

-	    _exit(127);

-	if (setuid(getuid()) == -1)

-	    _exit(127);

-	if (*type == 'r') {

-	    if (pdes[1] != 1) {

-		/* stdout */

-		dup2(pdes[1], 1);

-		close(pdes[1]);

-	    }

-	    close(pdes[0]);

-	} else {

-	    if (pdes[0] != 0) {

-		/* stdin */

-		dup2(pdes[0], 0);

-		close(pdes[0]);

-	    }

-	    close(pdes[1]);

-	}

-	execl("/bin/cat", "cat", file, (char *)NULL);

-	_exit(127);

-    }

-

-    /* Avoid EINTR during stdio calls */

-    OsBlockSignals ();

-    

-    /* parent */

-    if (*type == 'r') {

-	iop = fdopen(pdes[0], type);

-	close(pdes[1]);

-    } else {

-	iop = fdopen(pdes[1], type);

-	close(pdes[0]);

-    }

-

-    cur->fp = iop;

-    cur->pid = pid;

-    cur->next = pidlist;

-    pidlist = cur;

-

-#ifdef DEBUG

-    ErrorF("Fopen(%s), fp = %p\n", file, iop);

-#endif

-

-    return iop;

-#else

-    int ruid, euid;

-

-    ruid = getuid();

-    euid = geteuid();

-    

-    if (seteuid(ruid) == -1) {

-	    return NULL;

-    }

-    iop = fopen(file, type);

-

-    if (seteuid(euid) == -1) {

-	    fclose(iop);

-	    return NULL;

-    }

-    return iop;

-#endif /* HAS_SAVED_IDS_AND_SETEUID */

-}

-

-int

-Pclose(pointer iop)

-{

-    struct pid *cur, *last;

-    int pstat;

-    int pid;

-

-#ifdef DEBUG

-    ErrorF("Pclose: fp = %p\n", iop);

-#endif

-

-    fclose(iop);

-

-    for (last = NULL, cur = pidlist; cur; last = cur, cur = cur->next)

-	if (cur->fp == iop)

-	    break;

-    if (cur == NULL)

-	return -1;

-

-    do {

-	pid = waitpid(cur->pid, &pstat, 0);

-    } while (pid == -1 && errno == EINTR);

-

-    if (last == NULL)

-	pidlist = cur->next;

-    else

-	last->next = cur->next;

-    free(cur);

-

-    /* allow EINTR again */

-    OsReleaseSignals ();

-    

-    if (old_alarm && OsSignal(SIGALRM, old_alarm) == SIG_ERR) {

-      perror("signal");

-      return -1;

-    }

-

-    return pid == -1 ? -1 : pstat;

-}

-

-int

-Fclose(pointer iop)

-{

-#ifdef HAS_SAVED_IDS_AND_SETEUID

-    return fclose(iop);

-#else

-    return Pclose(iop);

-#endif

-}

-

-#endif /* !WIN32 */

-

-

-/*

- * CheckUserParameters: check for long command line arguments and long

- * environment variables.  By default, these checks are only done when

- * the server's euid != ruid.  In 3.3.x, these checks were done in an

- * external wrapper utility.

- */

-

-/* Consider LD* variables insecure? */

-#ifndef REMOVE_ENV_LD

-#define REMOVE_ENV_LD 1

-#endif

-

-/* Remove long environment variables? */

-#ifndef REMOVE_LONG_ENV

-#define REMOVE_LONG_ENV 1

-#endif

-

-/*

- * Disallow stdout or stderr as pipes?  It's possible to block the X server

- * when piping stdout+stderr to a pipe.

- *

- * Don't enable this because it looks like it's going to cause problems.

- */

-#ifndef NO_OUTPUT_PIPES

-#define NO_OUTPUT_PIPES 0

-#endif

-

-

-/* Check args and env only if running setuid (euid == 0 && euid != uid) ? */

-#ifndef CHECK_EUID

-#ifndef WIN32

-#define CHECK_EUID 1

-#else

-#define CHECK_EUID 0

-#endif

-#endif

-

-/*

- * Maybe the locale can be faked to make isprint(3) report that everything

- * is printable?  Avoid it by default.

- */

-#ifndef USE_ISPRINT

-#define USE_ISPRINT 0

-#endif

-

-#define MAX_ARG_LENGTH          128

-#define MAX_ENV_LENGTH          256

-#define MAX_ENV_PATH_LENGTH     2048	/* Limit for *PATH and TERMCAP */

-

-#if USE_ISPRINT

-#include <ctype.h>

-#define checkPrintable(c) isprint(c)

-#else

-#define checkPrintable(c) (((c) & 0x7f) >= 0x20 && ((c) & 0x7f) != 0x7f)

-#endif

-

-enum BadCode {

-    NotBad = 0,

-    UnsafeArg,

-    ArgTooLong,

-    UnprintableArg,

-    EnvTooLong,

-    OutputIsPipe,

-    InternalError

-};

-

-#if defined(VENDORSUPPORT)

-#define BUGADDRESS VENDORSUPPORT

-#elif defined(BUILDERADDR)

-#define BUGADDRESS BUILDERADDR

-#else

-#define BUGADDRESS "xorg@freedesktop.org"

-#endif

-

-void

-CheckUserParameters(int argc, char **argv, char **envp)

-{

-    enum BadCode bad = NotBad;

-    int i = 0, j;

-    char *a, *e = NULL;

-

-#if CHECK_EUID

-    if (geteuid() == 0 && getuid() != geteuid())

-#endif

-    {

-	/* Check each argv[] */

-	for (i = 1; i < argc; i++) {

-	    if (strcmp(argv[i], "-fp") == 0)

-	    {

-		i++; /* continue with next argument. skip the length check */

-		if (i >= argc)

-		    break;

-	    } else

-	    {

-		if (strlen(argv[i]) > MAX_ARG_LENGTH) {

-		    bad = ArgTooLong;

-		    break;

-		}

-	    }

-	    a = argv[i];

-	    while (*a) {

-		if (checkPrintable(*a) == 0) {

-		    bad = UnprintableArg;

-		    break;

-		}

-		a++;

-	    }

-	    if (bad)

-		break;

-	}

-	if (!bad) {

-	    /* Check each envp[] */

-	    for (i = 0; envp[i]; i++) {

-

-		/* Check for bad environment variables and values */

-#if REMOVE_ENV_LD

-		while (envp[i] && (strncmp(envp[i], "LD", 2) == 0)) {

-		    for (j = i; envp[j]; j++) {

-			envp[j] = envp[j+1];

-		    }

-		}

-#endif   

-		if (envp[i] && (strlen(envp[i]) > MAX_ENV_LENGTH)) {

-#if REMOVE_LONG_ENV

-		    for (j = i; envp[j]; j++) {

-			envp[j] = envp[j+1];

-		    }

-		    i--;

-#else

-		    char *eq;

-		    int len;

-

-		    eq = strchr(envp[i], '=');

-		    if (!eq)

-			continue;

-		    len = eq - envp[i];

-		    e = malloc(len + 1);

-		    if (!e) {

-			bad = InternalError;

-			break;

-		    }

-		    strncpy(e, envp[i], len);

-		    e[len] = 0;

-		    if (len >= 4 &&

-			(strcmp(e + len - 4, "PATH") == 0 ||

-			 strcmp(e, "TERMCAP") == 0)) {

-			if (strlen(envp[i]) > MAX_ENV_PATH_LENGTH) {

-			    bad = EnvTooLong;

-			    break;

-			} else {

-			    free(e);

-			}

-		    } else {

-			bad = EnvTooLong;

-			break;

-		    }

-#endif

-		}

-	    }

-	}

-#if NO_OUTPUT_PIPES

-	if (!bad) {

-	    struct stat buf;

-

-	    if (fstat(fileno(stdout), &buf) == 0 && S_ISFIFO(buf.st_mode))

-		bad = OutputIsPipe;

-	    if (fstat(fileno(stderr), &buf) == 0 && S_ISFIFO(buf.st_mode))

-		bad = OutputIsPipe;

-	}

-#endif

-    }

-    switch (bad) {

-    case NotBad:

-	return;

-    case UnsafeArg:

-	ErrorF("Command line argument number %d is unsafe\n", i);

-	break;

-    case ArgTooLong:

-	ErrorF("Command line argument number %d is too long\n", i);

-	break;

-    case UnprintableArg:

-	ErrorF("Command line argument number %d contains unprintable"

-		" characters\n", i);

-	break;

-    case EnvTooLong:

-	ErrorF("Environment variable `%s' is too long\n", e);

-	break;

-    case OutputIsPipe:

-	ErrorF("Stdout and/or stderr is a pipe\n");

-	break;

-    case InternalError:

-	ErrorF("Internal Error\n");

-	break;

-    default:

-	ErrorF("Unknown error\n");

-	break;

-    }

-    FatalError("X server aborted because of unsafe environment\n");

-}

-

-/*

- * CheckUserAuthorization: check if the user is allowed to start the

- * X server.  This usually means some sort of PAM checking, and it is

- * usually only done for setuid servers (uid != euid).

- */

-

-#ifdef USE_PAM

-#include <security/pam_appl.h>

-#include <security/pam_misc.h>

-#include <pwd.h>

-#endif /* USE_PAM */

-

-void

-CheckUserAuthorization(void)

-{

-#ifdef USE_PAM

-    static struct pam_conv conv = {

-	misc_conv,

-	NULL

-    };

-

-    pam_handle_t *pamh = NULL;

-    struct passwd *pw;

-    int retval;

-

-    if (getuid() != geteuid()) {

-	pw = getpwuid(getuid());

-	if (pw == NULL)

-	    FatalError("getpwuid() failed for uid %d\n", getuid());

-

-	retval = pam_start("xserver", pw->pw_name, &conv, &pamh);

-	if (retval != PAM_SUCCESS)

-	    FatalError("pam_start() failed.\n"

-			"\tMissing or mangled PAM config file or module?\n");

-

-	retval = pam_authenticate(pamh, 0);

-	if (retval != PAM_SUCCESS) {

-	    pam_end(pamh, retval);

-	    FatalError("PAM authentication failed, cannot start X server.\n"

-			"\tPerhaps you do not have console ownership?\n");

-	}

-

-	retval = pam_acct_mgmt(pamh, 0);

-	if (retval != PAM_SUCCESS) {

-	    pam_end(pamh, retval);

-	    FatalError("PAM authentication failed, cannot start X server.\n"

-			"\tPerhaps you do not have console ownership?\n");

-	}

-

-	/* this is not a session, so do not do session management */

-	pam_end(pamh, PAM_SUCCESS);

-    }

-#endif

-}

-

-/*

- * Tokenize a string into a NULL terminated array of strings. Always returns

- * an allocated array unless an error occurs.

- */

-char**

-xstrtokenize(const char *str, const char *separators)

-{

-    char **list, **nlist;

-    char *tok, *tmp;

-    unsigned num = 0, n;

-

-    if (!str)

-        return NULL;

-    list = calloc(1, sizeof(*list));

-    if (!list)

-        return NULL;

-    tmp = strdup(str);

-    if (!tmp)

-        goto error;

-    for (tok = strtok(tmp, separators); tok; tok = strtok(NULL, separators)) {

-        nlist = realloc(list, (num + 2) * sizeof(*list));

-        if (!nlist)

-            goto error;

-        list = nlist;

-        list[num] = strdup(tok);

-        if (!list[num])

-            goto error;

-        list[++num] = NULL;

-    }

-    free(tmp);

-    return list;

-

-error:

-    free(tmp);

-    for (n = 0; n < num; n++)

-        free(list[n]);

-    free(list);

-    return NULL;

-}

+/*
+
+Copyright 1987, 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.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts,
+Copyright 1994 Quarterdeck Office Systems.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+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 names of Digital and
+Quarterdeck not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+DIGITAL AND QUARTERDECK DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS, IN NO EVENT SHALL DIGITAL 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_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#ifdef __CYGWIN__
+#include <stdlib.h>
+#include <signal.h>
+/*
+   Sigh... We really need a prototype for this to know it is stdcall,
+   but #include-ing <windows.h> here is not a good idea...
+*/
+__stdcall unsigned long GetTickCount(void);
+#endif
+
+#if defined(WIN32) && !defined(__CYGWIN__)
+#include <X11/Xwinsock.h>
+#endif
+#include <X11/Xos.h>
+#include <stdio.h>
+#include <time.h>
+#if !defined(WIN32) || !defined(__MINGW32__)
+#include <sys/time.h>
+#include <sys/resource.h>
+#endif
+#include "misc.h"
+#include <X11/X.h>
+#define XSERV_t
+#define TRANS_SERVER
+#define TRANS_REOPEN
+#include <X11/Xtrans/Xtrans.h>
+#include "input.h"
+#include "dixfont.h"
+#include "osdep.h"
+#include "extension.h"
+#ifdef X_POSIX_C_SOURCE
+#define _POSIX_C_SOURCE X_POSIX_C_SOURCE
+#include <signal.h>
+#undef _POSIX_C_SOURCE
+#else
+#if defined(_POSIX_SOURCE)
+#include <signal.h>
+#else
+#define _POSIX_SOURCE
+#include <signal.h>
+#undef _POSIX_SOURCE
+#endif
+#endif
+#ifndef WIN32
+#include <sys/wait.h>
+#endif
+#if !defined(SYSV) && !defined(WIN32) 
+#include <sys/resource.h>
+#endif
+#include <sys/stat.h>
+#include <ctype.h>    /* for isspace */
+#include <stdarg.h>
+
+#include <stdlib.h>	/* for malloc() */
+
+#if defined(TCPCONN) || defined(STREAMSCONN)
+# ifndef WIN32
+#  include <netdb.h>
+# endif
+#endif
+
+#include "opaque.h"
+
+#include "dixstruct.h"
+
+#include "xkbsrv.h"
+
+#include "picture.h"
+
+Bool noTestExtensions;
+#ifdef COMPOSITE
+Bool noCompositeExtension = FALSE;
+#endif
+
+#ifdef DAMAGE
+Bool noDamageExtension = FALSE;
+#endif
+#ifdef DBE
+Bool noDbeExtension = FALSE;
+#endif
+#ifdef DPMSExtension
+Bool noDPMSExtension = FALSE;
+#endif
+#ifdef GLXEXT
+Bool noGlxExtension = FALSE;
+Bool noGlxVisualInit = FALSE;
+#endif
+#ifdef SCREENSAVER
+Bool noScreenSaverExtension = FALSE;
+#endif
+#ifdef MITSHM
+Bool noMITShmExtension = FALSE;
+#endif
+#ifdef RANDR
+Bool noRRExtension = FALSE;
+#endif
+Bool noRenderExtension = FALSE;
+#ifdef XCSECURITY
+Bool noSecurityExtension = FALSE;
+#endif
+#ifdef RES
+Bool noResExtension = FALSE;
+#endif
+#ifdef XF86BIGFONT
+Bool noXFree86BigfontExtension = FALSE;
+#endif
+#ifdef XFreeXDGA
+Bool noXFree86DGAExtension = FALSE;
+#endif
+#ifdef XF86DRI
+Bool noXFree86DRIExtension = FALSE;
+#endif
+#ifdef XF86VIDMODE
+Bool noXFree86VidModeExtension = FALSE;
+#endif
+#ifdef XFIXES
+Bool noXFixesExtension = FALSE;
+#endif
+#ifdef PANORAMIX
+/* Xinerama is disabled by default unless enabled via +xinerama */
+Bool noPanoramiXExtension = TRUE;
+#endif
+#ifdef XSELINUX
+Bool noSELinuxExtension = FALSE;
+int selinuxEnforcingState = SELINUX_MODE_DEFAULT;
+#endif
+#ifdef XV
+Bool noXvExtension = FALSE;
+#endif
+#ifdef DRI2
+Bool noDRI2Extension = FALSE;
+#endif
+
+Bool noGEExtension = FALSE;
+
+#define X_INCLUDE_NETDB_H
+#include <X11/Xos_r.h>
+
+#include <errno.h>
+
+Bool CoreDump;
+
+#ifdef PANORAMIX
+Bool PanoramiXExtensionDisabledHack = FALSE;
+#endif
+
+int auditTrailLevel = 1;
+
+#if defined(SVR4) || defined(__linux__) || defined(CSRG_BASED)
+#define HAS_SAVED_IDS_AND_SETEUID
+#endif
+
+OsSigHandlerPtr
+OsSignal(int sig, OsSigHandlerPtr handler)
+{
+    struct sigaction act, oact;
+
+    sigemptyset(&act.sa_mask);
+    if (handler != SIG_IGN)
+	sigaddset(&act.sa_mask, sig);
+    act.sa_flags = 0;
+    act.sa_handler = handler;
+    if (sigaction(sig, &act, &oact))
+      perror("sigaction");
+    return oact.sa_handler;
+}
+
+/*
+ * Explicit support for a server lock file like the ones used for UUCP.
+ * For architectures with virtual terminals that can run more than one
+ * server at a time.  This keeps the servers from stomping on each other
+ * if the user forgets to give them different display numbers.
+ */
+#define LOCK_DIR "/tmp"
+#define LOCK_TMP_PREFIX "/.tX"
+#define LOCK_PREFIX "/.X"
+#define LOCK_SUFFIX "-lock"
+
+static Bool StillLocking = FALSE;
+static char LockFile[PATH_MAX];
+static Bool nolock = FALSE;
+
+/*
+ * LockServer --
+ *      Check if the server lock file exists.  If so, check if the PID
+ *      contained inside is valid.  If so, then die.  Otherwise, create
+ *      the lock file containing the PID.
+ */
+void
+LockServer(void)
+{
+  char tmp[PATH_MAX], pid_str[12];
+  int lfd, i, haslock, l_pid, t;
+  char *tmppath = NULL;
+  int len;
+  char port[20];
+
+  if (nolock) return;
+  /*
+   * Path names
+   */
+  tmppath = LOCK_DIR;
+
+  sprintf(port, "%d", atoi(display));
+  len = strlen(LOCK_PREFIX) > strlen(LOCK_TMP_PREFIX) ? strlen(LOCK_PREFIX) :
+						strlen(LOCK_TMP_PREFIX);
+  len += strlen(tmppath) + strlen(port) + strlen(LOCK_SUFFIX) + 1;
+  if (len > sizeof(LockFile))
+    FatalError("Display name `%s' is too long\n", port);
+  (void)sprintf(tmp, "%s" LOCK_TMP_PREFIX "%s" LOCK_SUFFIX, tmppath, port);
+  (void)sprintf(LockFile, "%s" LOCK_PREFIX "%s" LOCK_SUFFIX, tmppath, port);
+
+  /*
+   * Create a temporary file containing our PID.  Attempt three times
+   * to create the file.
+   */
+  StillLocking = TRUE;
+  i = 0;
+  do {
+    i++;
+    lfd = open(tmp, O_CREAT | O_EXCL | O_WRONLY, 0644);
+    if (lfd < 0)
+       sleep(2);
+    else
+       break;
+  } while (i < 3);
+  if (lfd < 0) {
+    unlink(tmp);
+    i = 0;
+    do {
+      i++;
+      lfd = open(tmp, O_CREAT | O_EXCL | O_WRONLY, 0644);
+      if (lfd < 0)
+         sleep(2);
+      else
+         break;
+    } while (i < 3);
+  }
+  if (lfd < 0)
+    FatalError("Could not create lock file in %s\n", tmp);
+  (void) sprintf(pid_str, "%10ld\n", (long)getpid());
+  (void) write(lfd, pid_str, 11);
+  (void) chmod(tmp, 0444);
+  (void) close(lfd);
+
+  /*
+   * OK.  Now the tmp file exists.  Try three times to move it in place
+   * for the lock.
+   */
+  i = 0;
+  haslock = 0;
+  while ((!haslock) && (i++ < 3)) {
+    haslock = (link(tmp,LockFile) == 0);
+    if (haslock) {
+      /*
+       * We're done.
+       */
+      break;
+    }
+    else {
+      /*
+       * Read the pid from the existing file
+       */
+      lfd = open(LockFile, O_RDONLY);
+      if (lfd < 0) {
+        unlink(tmp);
+        FatalError("Can't read lock file %s\n", LockFile);
+      }
+      pid_str[0] = '\0';
+      if (read(lfd, pid_str, 11) != 11) {
+        /*
+         * Bogus lock file.
+         */
+        unlink(LockFile);
+        close(lfd);
+        continue;
+      }
+      pid_str[11] = '\0';
+      sscanf(pid_str, "%d", &l_pid);
+      close(lfd);
+
+      /*
+       * Now try to kill the PID to see if it exists.
+       */
+      errno = 0;
+      t = kill(l_pid, 0);
+      if ((t< 0) && (errno == ESRCH)) {
+        /*
+         * Stale lock file.
+         */
+        unlink(LockFile);
+        continue;
+      }
+      else if (((t < 0) && (errno == EPERM)) || (t == 0)) {
+        /*
+         * Process is still active.
+         */
+        unlink(tmp);
+	FatalError("Server is already active for display %s\n%s %s\n%s\n",
+		   port, "\tIf this server is no longer running, remove",
+		   LockFile, "\tand start again.");
+      }
+    }
+  }
+  unlink(tmp);
+  if (!haslock)
+    FatalError("Could not create server lock file: %s\n", LockFile);
+  StillLocking = FALSE;
+}
+
+/*
+ * UnlockServer --
+ *      Remove the server lock file.
+ */
+void
+UnlockServer(void)
+{
+  if (nolock) return;
+
+  if (!StillLocking){
+
+  (void) unlink(LockFile);
+  }
+}
+
+/* Force connections to close on SIGHUP from init */
+
+void
+AutoResetServer (int sig)
+{
+    int olderrno = errno;
+
+    dispatchException |= DE_RESET;
+    isItTimeToYield = TRUE;
+    errno = olderrno;
+}
+
+/* Force connections to close and then exit on SIGTERM, SIGINT */
+
+void
+GiveUp(int sig)
+{
+    int olderrno = errno;
+
+    dispatchException |= DE_TERMINATE;
+    isItTimeToYield = TRUE;
+    errno = olderrno;
+}
+
+#if (defined WIN32 && defined __MINGW32__) || defined(__CYGWIN__)
+CARD32
+GetTimeInMillis (void)
+{
+  return GetTickCount ();
+}
+#else
+CARD32
+GetTimeInMillis(void)
+{
+    struct timeval tv;
+
+#ifdef MONOTONIC_CLOCK
+    struct timespec tp;
+    static clockid_t clockid;
+    if (!clockid) {
+#ifdef CLOCK_MONOTONIC_COARSE
+        if (clock_getres(CLOCK_MONOTONIC_COARSE, &tp) == 0 &&
+            (tp.tv_nsec / 1000) <= 1000 &&
+            clock_gettime(CLOCK_MONOTONIC_COARSE, &tp) == 0)
+            clockid = CLOCK_MONOTONIC_COARSE;
+        else
+#endif
+        if (clock_gettime(CLOCK_MONOTONIC, &tp) == 0)
+            clockid = CLOCK_MONOTONIC;
+        else
+            clockid = ~0L;
+    }
+    if (clockid != ~0L && clock_gettime(clockid, &tp) == 0)
+        return (tp.tv_sec * 1000) + (tp.tv_nsec / 1000000L);
+#endif
+
+    X_GETTIMEOFDAY(&tv);
+    return(tv.tv_sec * 1000) + (tv.tv_usec / 1000);
+}
+#endif
+
+void
+AdjustWaitForDelay (pointer waitTime, unsigned long newdelay)
+{
+    static struct timeval   delay_val;
+    struct timeval	    **wt = (struct timeval **) waitTime;
+    unsigned long	    olddelay;
+
+    if (*wt == NULL)
+    {
+	delay_val.tv_sec = newdelay / 1000;
+	delay_val.tv_usec = 1000 * (newdelay % 1000);
+	*wt = &delay_val;
+    }
+    else
+    {
+	olddelay = (*wt)->tv_sec * 1000 + (*wt)->tv_usec / 1000;
+	if (newdelay < olddelay)
+	{
+	    (*wt)->tv_sec = newdelay / 1000;
+	    (*wt)->tv_usec = 1000 * (newdelay % 1000);
+	}
+    }
+}
+
+void UseMsg(void)
+{
+    ErrorF("use: X [:<display>] [option]\n");
+    ErrorF("-a #                   default pointer acceleration (factor)\n");
+    ErrorF("-ac                    disable access control restrictions\n");
+    ErrorF("-audit int             set audit trail level\n");	
+    ErrorF("-auth file             select authorization file\n");	
+    ErrorF("-br                    create root window with black background\n");
+    ErrorF("+bs                    enable any backing store support\n");
+    ErrorF("-bs                    disable any backing store support\n");
+    ErrorF("-c                     turns off key-click\n");
+    ErrorF("c #                    key-click volume (0-100)\n");
+    ErrorF("-cc int                default color visual class\n");
+    ErrorF("-nocursor              disable the cursor\n");
+    ErrorF("-core                  generate core dump on fatal error\n");
+    ErrorF("-dpi int               screen resolution in dots per inch\n");
+#ifdef DPMSExtension
+    ErrorF("-dpms                  disables VESA DPMS monitor control\n");
+#endif
+    ErrorF("-deferglyphs [none|all|16] defer loading of [no|all|16-bit] glyphs\n");
+    ErrorF("-f #                   bell base (0-100)\n");
+    ErrorF("-fc string             cursor font\n");
+    ErrorF("-fn string             default font name\n");
+    ErrorF("-fp string             default font path\n");
+    ErrorF("-help                  prints message with these options\n");
+    ErrorF("-I                     ignore all remaining arguments\n");
+#ifdef RLIMIT_DATA
+    ErrorF("-ld int                limit data space to N Kb\n");
+#endif
+#ifdef RLIMIT_NOFILE
+    ErrorF("-lf int                limit number of open files to N\n");
+#endif
+#ifdef RLIMIT_STACK
+    ErrorF("-ls int                limit stack space to N Kb\n");
+#endif
+    ErrorF("-nolock                disable the locking mechanism\n");
+    ErrorF("-nolisten string       don't listen on protocol\n");
+    ErrorF("-noreset               don't reset after last client exists\n");
+    ErrorF("-background [none]     create root window with no background\n");
+    ErrorF("-reset                 reset after last client exists\n");
+    ErrorF("-p #                   screen-saver pattern duration (minutes)\n");
+    ErrorF("-pn                    accept failure to listen on all ports\n");
+    ErrorF("-nopn                  reject failure to listen on all ports\n");
+    ErrorF("-r                     turns off auto-repeat\n");
+    ErrorF("r                      turns on auto-repeat \n");
+    ErrorF("-render [default|mono|gray|color] set render color alloc policy\n");
+    ErrorF("-retro                 start with classic stipple and cursor\n");
+    ErrorF("-s #                   screen-saver timeout (minutes)\n");
+    ErrorF("-t #                   default pointer threshold (pixels/t)\n");
+    ErrorF("-terminate             terminate at server reset\n");
+    ErrorF("-to #                  connection time out\n");
+    ErrorF("-tst                   disable testing extensions\n");
+    ErrorF("ttyxx                  server started from init on /dev/ttyxx\n");
+    ErrorF("v                      video blanking for screen-saver\n");
+    ErrorF("-v                     screen-saver without video blanking\n");
+    ErrorF("-wm                    WhenMapped default backing-store\n");
+    ErrorF("-wr                    create root window with white background\n");
+    ErrorF("-maxbigreqsize         set maximal bigrequest size \n");
+#ifdef PANORAMIX
+    ErrorF("+xinerama              Enable XINERAMA extension\n");
+    ErrorF("-xinerama              Disable XINERAMA extension\n");
+#endif
+    ErrorF("-dumbSched             Disable smart scheduling, enable old behavior\n");
+    ErrorF("-schedInterval int     Set scheduler interval in msec\n");
+    ErrorF("-sigstop               Enable SIGSTOP based startup\n");
+    ErrorF("+extension name        Enable extension\n");
+    ErrorF("-extension name        Disable extension\n");
+#ifdef XDMCP
+    XdmcpUseMsg();
+#endif
+    XkbUseMsg();
+    ddxUseMsg();
+}
+
+/*  This function performs a rudimentary sanity check
+ *  on the display name passed in on the command-line,
+ *  since this string is used to generate filenames.
+ *  It is especially important that the display name
+ *  not contain a "/" and not start with a "-".
+ *                                            --kvajk
+ */
+static int 
+VerifyDisplayName(const char *d)
+{
+    if ( d == (char *)0 ) return 0;  /*  null  */
+    if ( *d == '\0' ) return 0;  /*  empty  */
+    if ( *d == '-' ) return 0;  /*  could be confused for an option  */
+    if ( *d == '.' ) return 0;  /*  must not equal "." or ".."  */
+    if ( strchr(d, '/') != (char *)0 ) return 0;  /*  very important!!!  */
+    return 1;
+}
+
+/*
+ * This function parses the command line. Handles device-independent fields
+ * and allows ddx to handle additional fields.  It is not allowed to modify
+ * argc or any of the strings pointed to by argv.
+ */
+void
+ProcessCommandLine(int argc, char *argv[])
+{
+    int i, skip;
+
+    defaultKeyboardControl.autoRepeat = TRUE;
+
+#ifdef NO_PART_NET
+    PartialNetwork = FALSE;
+#else
+    PartialNetwork = TRUE;
+#endif
+
+    for ( i = 1; i < argc; i++ )
+    {
+	/* call ddx first, so it can peek/override if it wants */
+        if((skip = ddxProcessArgument(argc, argv, i)))
+	{
+	    i += (skip - 1);
+	}
+	else if(argv[i][0] ==  ':')  
+	{
+	    /* initialize display */
+	    display = argv[i];
+	    display++;
+            if( ! VerifyDisplayName( display ) ) {
+                ErrorF("Bad display name: %s\n", display);
+                UseMsg();
+		FatalError("Bad display name, exiting: %s\n", display);
+            }
+	}
+	else if ( strcmp( argv[i], "-a") == 0)
+	{
+	    if(++i < argc)
+	        defaultPointerControl.num = atoi(argv[i]);
+	    else
+		UseMsg();
+	}
+	else if ( strcmp( argv[i], "-ac") == 0)
+	{
+	    defeatAccessControl = TRUE;
+	}
+	else if ( strcmp( argv[i], "-audit") == 0)
+	{
+	    if(++i < argc)
+	        auditTrailLevel = atoi(argv[i]);
+	    else
+		UseMsg();
+	}
+	else if ( strcmp( argv[i], "-auth") == 0)
+	{
+	    if(++i < argc)
+	        InitAuthorization (argv[i]);
+	    else
+		UseMsg();
+	}
+	else if ( strcmp( argv[i], "-br") == 0) ; /* default */
+	else if ( strcmp( argv[i], "+bs") == 0)
+	    enableBackingStore = TRUE;
+	else if ( strcmp( argv[i], "-bs") == 0)
+	    disableBackingStore = TRUE;
+	else if ( strcmp( argv[i], "c") == 0)
+	{
+	    if(++i < argc)
+	        defaultKeyboardControl.click = atoi(argv[i]);
+	    else
+		UseMsg();
+	}
+	else if ( strcmp( argv[i], "-c") == 0)
+	{
+	    defaultKeyboardControl.click = 0;
+	}
+	else if ( strcmp( argv[i], "-cc") == 0)
+	{
+	    if(++i < argc)
+	        defaultColorVisualClass = atoi(argv[i]);
+	    else
+		UseMsg();
+	}
+	else if ( strcmp( argv[i], "-core") == 0)
+	{
+#if !defined(WIN32) || !defined(__MINGW32__)
+	    struct rlimit   core_limit;
+	    getrlimit (RLIMIT_CORE, &core_limit);
+	    core_limit.rlim_cur = core_limit.rlim_max;
+	    setrlimit (RLIMIT_CORE, &core_limit);
+#endif
+	    CoreDump = TRUE;
+	}
+        else if ( strcmp( argv[i], "-nocursor") == 0)
+        {
+            EnableCursor = FALSE;
+        }
+        else if ( strcmp( argv[i], "-dpi") == 0)
+	{
+	    if(++i < argc)
+	        monitorResolution = atoi(argv[i]);
+	    else
+		UseMsg();
+	}
+#ifdef DPMSExtension
+	else if ( strcmp( argv[i], "dpms") == 0)
+	    /* ignored for compatibility */ ;
+	else if ( strcmp( argv[i], "-dpms") == 0)
+	    DPMSDisabledSwitch = TRUE;
+#endif
+	else if ( strcmp( argv[i], "-deferglyphs") == 0)
+	{
+	    if(++i >= argc || !ParseGlyphCachingMode(argv[i]))
+		UseMsg();
+	}
+	else if ( strcmp( argv[i], "-f") == 0)
+	{
+	    if(++i < argc)
+	        defaultKeyboardControl.bell = atoi(argv[i]);
+	    else
+		UseMsg();
+	}
+	else if ( strcmp( argv[i], "-fc") == 0)
+	{
+	    if(++i < argc)
+	        defaultCursorFont = argv[i];
+	    else
+		UseMsg();
+	}
+	else if ( strcmp( argv[i], "-fn") == 0)
+	{
+	    if(++i < argc)
+	        defaultTextFont = argv[i];
+	    else
+		UseMsg();
+	}
+	else if ( strcmp( argv[i], "-fp") == 0)
+	{
+	    if(++i < argc)
+	    {
+	        defaultFontPath = argv[i];
+	    }
+	    else
+		UseMsg();
+	}
+	else if ( strcmp( argv[i], "-help") == 0)
+	{
+	    UseMsg();
+	    exit(0);
+	}
+        else if ( (skip=XkbProcessArguments(argc,argv,i))!=0 ) {
+	    if (skip>0)
+		 i+= skip-1;
+	    else UseMsg();
+	}
+#ifdef RLIMIT_DATA
+	else if ( strcmp( argv[i], "-ld") == 0)
+	{
+	    if(++i < argc)
+	    {
+	        limitDataSpace = atoi(argv[i]);
+		if (limitDataSpace > 0)
+		    limitDataSpace *= 1024;
+	    }
+	    else
+		UseMsg();
+	}
+#endif
+#ifdef RLIMIT_NOFILE
+	else if ( strcmp( argv[i], "-lf") == 0)
+	{
+	    if(++i < argc)
+	        limitNoFile = atoi(argv[i]);
+	    else
+		UseMsg();
+	}
+#endif
+#ifdef RLIMIT_STACK
+	else if ( strcmp( argv[i], "-ls") == 0)
+	{
+	    if(++i < argc)
+	    {
+	        limitStackSpace = atoi(argv[i]);
+		if (limitStackSpace > 0)
+		    limitStackSpace *= 1024;
+	    }
+	    else
+		UseMsg();
+	}
+#endif
+	else if ( strcmp ( argv[i], "-nolock") == 0)
+	{
+#if !defined(WIN32) && !defined(__CYGWIN__)
+	  if (getuid() != 0)
+	    ErrorF("Warning: the -nolock option can only be used by root\n");
+	  else
+#endif
+	    nolock = TRUE;
+	}
+	else if ( strcmp( argv[i], "-nolisten") == 0)
+	{
+            if(++i < argc) {
+		if (_XSERVTransNoListen(argv[i])) 
+		    FatalError ("Failed to disable listen for %s transport",
+				argv[i]);
+	   } else
+		UseMsg();
+	}
+	else if ( strcmp( argv[i], "-noreset") == 0)
+	{
+	    dispatchExceptionAtReset = 0;
+	}
+	else if ( strcmp( argv[i], "-reset") == 0)
+	{
+	    dispatchExceptionAtReset = DE_RESET;
+	}
+	else if ( strcmp( argv[i], "-p") == 0)
+	{
+	    if(++i < argc)
+	        defaultScreenSaverInterval = ((CARD32)atoi(argv[i])) *
+					     MILLI_PER_MIN;
+	    else
+		UseMsg();
+	}
+	else if (strcmp(argv[i], "-pogo") == 0)
+	{
+	    dispatchException = DE_TERMINATE;
+	}
+	else if ( strcmp( argv[i], "-pn") == 0)
+	    PartialNetwork = TRUE;
+	else if ( strcmp( argv[i], "-nopn") == 0)
+	    PartialNetwork = FALSE;
+	else if ( strcmp( argv[i], "r") == 0)
+	    defaultKeyboardControl.autoRepeat = TRUE;
+	else if ( strcmp( argv[i], "-r") == 0)
+	    defaultKeyboardControl.autoRepeat = FALSE;
+	else if ( strcmp( argv[i], "-retro") == 0)
+	    party_like_its_1989 = TRUE;
+	else if ( strcmp( argv[i], "-s") == 0)
+	{
+	    if(++i < argc)
+	        defaultScreenSaverTime = ((CARD32)atoi(argv[i])) *
+					 MILLI_PER_MIN;
+	    else
+		UseMsg();
+	}
+	else if ( strcmp( argv[i], "-t") == 0)
+	{
+	    if(++i < argc)
+	        defaultPointerControl.threshold = atoi(argv[i]);
+	    else
+		UseMsg();
+	}
+	else if ( strcmp( argv[i], "-terminate") == 0)
+	{
+	    dispatchExceptionAtReset = DE_TERMINATE;
+	}
+	else if ( strcmp( argv[i], "-to") == 0)
+	{
+	    if(++i < argc)
+		TimeOutValue = ((CARD32)atoi(argv[i])) * MILLI_PER_SECOND;
+	    else
+		UseMsg();
+	}
+	else if ( strcmp( argv[i], "-tst") == 0)
+	{
+	    noTestExtensions = TRUE;
+	}
+	else if ( strcmp( argv[i], "v") == 0)
+	    defaultScreenSaverBlanking = PreferBlanking;
+	else if ( strcmp( argv[i], "-v") == 0)
+	    defaultScreenSaverBlanking = DontPreferBlanking;
+	else if ( strcmp( argv[i], "-wm") == 0)
+	    defaultBackingStore = WhenMapped;
+        else if ( strcmp( argv[i], "-wr") == 0)
+            whiteRoot = TRUE;
+        else if ( strcmp( argv[i], "-background") == 0) {
+            if(++i < argc) {
+                if (!strcmp ( argv[i], "none"))
+                    bgNoneRoot = TRUE;
+                else
+                    UseMsg();
+            }
+        }
+        else if ( strcmp( argv[i], "-maxbigreqsize") == 0) {
+             if(++i < argc) {
+                 long reqSizeArg = atol(argv[i]);
+
+                 /* Request size > 128MB does not make much sense... */
+                 if( reqSizeArg > 0L && reqSizeArg < 128L ) {
+                     maxBigRequestSize = (reqSizeArg * 1048576L) - 1L;
+                 }
+                 else
+                 {
+                     UseMsg();
+                 }
+             }
+             else
+             {
+                 UseMsg();
+             }
+         }
+#ifdef PANORAMIX
+	else if ( strcmp( argv[i], "+xinerama") == 0){
+	    noPanoramiXExtension = FALSE;
+	}
+	else if ( strcmp( argv[i], "-xinerama") == 0){
+	    noPanoramiXExtension = TRUE;
+	}
+	else if ( strcmp( argv[i], "-disablexineramaextension") == 0){
+	    PanoramiXExtensionDisabledHack = TRUE;
+	}
+#endif
+	else if ( strcmp( argv[i], "-I") == 0)
+	{
+	    /* ignore all remaining arguments */
+	    break;
+	}
+	else if (strncmp (argv[i], "tty", 3) == 0)
+	{
+            /* init supplies us with this useless information */
+	}
+#ifdef XDMCP
+	else if ((skip = XdmcpOptions(argc, argv, i)) != i)
+	{
+	    i = skip - 1;
+	}
+#endif
+	else if ( strcmp( argv[i], "-dumbSched") == 0)
+	{
+	    SmartScheduleDisable = TRUE;
+	}
+	else if ( strcmp( argv[i], "-schedInterval") == 0)
+	{
+	    if (++i < argc)
+	    {
+		SmartScheduleInterval = atoi(argv[i]);
+		SmartScheduleSlice = SmartScheduleInterval;
+	    }
+	    else
+		UseMsg();
+	}
+	else if ( strcmp( argv[i], "-schedMax") == 0)
+	{
+	    if (++i < argc)
+	    {
+		SmartScheduleMaxSlice = atoi(argv[i]);
+	    }
+	    else
+		UseMsg();
+	}
+	else if ( strcmp( argv[i], "-render" ) == 0)
+	{
+	    if (++i < argc)
+	    {
+		int policy = PictureParseCmapPolicy (argv[i]);
+
+		if (policy != PictureCmapPolicyInvalid)
+		    PictureCmapPolicy = policy;
+		else
+		    UseMsg ();
+	    }
+	    else
+		UseMsg ();
+	}
+	else if ( strcmp( argv[i], "-sigstop") == 0)
+	{
+	    RunFromSigStopParent = TRUE;
+	}
+	else if ( strcmp( argv[i], "+extension") == 0)
+	{
+	    if (++i < argc)
+	    {
+		if (!EnableDisableExtension(argv[i], TRUE))
+		    EnableDisableExtensionError(argv[i], TRUE);
+	    }
+	    else
+		UseMsg();
+	}
+	else if ( strcmp( argv[i], "-extension") == 0)
+	{
+	    if (++i < argc)
+	    {
+		if (!EnableDisableExtension(argv[i], FALSE))
+		    EnableDisableExtensionError(argv[i], FALSE);
+	    }
+	    else
+		UseMsg();
+	}
+ 	else
+ 	{
+	    ErrorF("Unrecognized option: %s\n", argv[i]);
+	    UseMsg();
+	    FatalError("Unrecognized option: %s\n", argv[i]);
+        }
+    }
+}
+
+/* Implement a simple-minded font authorization scheme.  The authorization
+   name is "hp-hostname-1", the contents are simply the host name. */
+int
+set_font_authorizations(char **authorizations, int *authlen, pointer client)
+{
+#define AUTHORIZATION_NAME "hp-hostname-1"
+#if defined(TCPCONN) || defined(STREAMSCONN)
+    static char *result = NULL;
+    static char *p = NULL;
+
+    if (p == NULL)
+    {
+	char hname[1024], *hnameptr;
+	unsigned int len;
+#if defined(IPv6) && defined(AF_INET6)
+	struct addrinfo hints, *ai = NULL;
+#else
+	struct hostent *host;
+#ifdef XTHREADS_NEEDS_BYNAMEPARAMS
+	_Xgethostbynameparams hparams;
+#endif
+#endif
+
+	gethostname(hname, 1024);
+#if defined(IPv6) && defined(AF_INET6)
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_flags = AI_CANONNAME;
+	if (getaddrinfo(hname, NULL, &hints, &ai) == 0) {
+	    hnameptr = ai->ai_canonname;
+	} else {
+	    hnameptr = hname;
+	}
+#else
+	host = _XGethostbyname(hname, hparams);
+	if (host == NULL)
+	    hnameptr = hname;
+	else
+	    hnameptr = host->h_name;
+#endif
+
+	len = strlen(hnameptr) + 1;
+	result = malloc(len + sizeof(AUTHORIZATION_NAME) + 4);
+
+	p = result;
+        *p++ = sizeof(AUTHORIZATION_NAME) >> 8;
+        *p++ = sizeof(AUTHORIZATION_NAME) & 0xff;
+        *p++ = (len) >> 8;
+        *p++ = (len & 0xff);
+
+	memmove(p, AUTHORIZATION_NAME, sizeof(AUTHORIZATION_NAME));
+	p += sizeof(AUTHORIZATION_NAME);
+	memmove(p, hnameptr, len);
+	p += len;
+#if defined(IPv6) && defined(AF_INET6)
+	if (ai) {
+	    freeaddrinfo(ai);
+	}
+#endif
+    }
+    *authlen = p - result;
+    *authorizations = result;
+    return 1;
+#else /* TCPCONN */
+    return 0;
+#endif /* TCPCONN */
+}
+
+void *
+Xalloc(unsigned long amount)
+{
+    /*
+     * Xalloc used to return NULL when large amount of memory is requested. In
+     * order to catch the buggy callers this warning has been added, slated to
+     * removal by anyone who touches this code (or just looks at it) in 2011.
+     *
+     * -- Mikhail Gusarov
+     */
+    if ((long)amount <= 0)
+	ErrorF("Warning: Xalloc: "
+	       "requesting unpleasantly large amount of memory: %lu bytes.\n",
+               amount);
+
+    return malloc(amount);
+}
+
+void *
+XNFalloc(unsigned long amount)
+{
+    void *ptr = malloc(amount);
+    if (!ptr)
+        FatalError("Out of memory");
+    return ptr;
+}
+
+void *
+Xcalloc(unsigned long amount)
+{
+    return calloc(1, amount);
+}
+
+void *
+XNFcalloc(unsigned long amount)
+{
+    void *ret = calloc(1, amount);
+    if (!ret)
+        FatalError("XNFcalloc: Out of memory");
+    return ret;
+}
+
+void *
+Xrealloc(void *ptr, unsigned long amount)
+{
+    /*
+     * Xrealloc used to return NULL when large amount of memory is requested. In
+     * order to catch the buggy callers this warning has been added, slated to
+     * removal by anyone who touches this code (or just looks at it) in 2011.
+     *
+     * -- Mikhail Gusarov
+     */
+    if ((long)amount <= 0)
+	ErrorF("Warning: Xrealloc: "
+	       "requesting unpleasantly large amount of memory: %lu bytes.\n",
+               amount);
+
+    return realloc(ptr, amount);
+}
+
+void *
+XNFrealloc(void *ptr, unsigned long amount)
+{
+    void *ret = realloc(ptr, amount);
+    if (!ret)
+	FatalError("XNFrealloc: Out of memory");
+    return ret;
+}
+
+void
+Xfree(void *ptr)
+{
+    free(ptr);
+}
+
+
+char *
+Xstrdup(const char *s)
+{
+    if (s == NULL)
+	return NULL;
+    return strdup(s);
+}
+
+char *
+XNFstrdup(const char *s)
+{
+    char *ret;
+
+    if (s == NULL)
+	return NULL;
+
+    ret = strdup(s);
+    if (!ret)
+	FatalError("XNFstrdup: Out of memory");
+    return ret;
+}
+
+void
+SmartScheduleStopTimer (void)
+{
+    struct itimerval	timer;
+    
+    if (SmartScheduleDisable)
+	return;
+    timer.it_interval.tv_sec = 0;
+    timer.it_interval.tv_usec = 0;
+    timer.it_value.tv_sec = 0;
+    timer.it_value.tv_usec = 0;
+    (void) setitimer (ITIMER_REAL, &timer, 0);
+}
+
+void
+SmartScheduleStartTimer (void)
+{
+    struct itimerval	timer;
+    
+    if (SmartScheduleDisable)
+	return;
+    timer.it_interval.tv_sec = 0;
+    timer.it_interval.tv_usec = SmartScheduleInterval * 1000;
+    timer.it_value.tv_sec = 0;
+    timer.it_value.tv_usec = SmartScheduleInterval * 1000;
+    setitimer (ITIMER_REAL, &timer, 0);
+}
+
+static void
+SmartScheduleTimer (int sig)
+{
+    SmartScheduleTime += SmartScheduleInterval;
+}
+
+void
+SmartScheduleInit (void)
+{
+    struct sigaction	act;
+
+    if (SmartScheduleDisable)
+	return;
+
+    memset((char *) &act, 0, sizeof(struct sigaction));
+
+    /* Set up the timer signal function */
+    act.sa_handler = SmartScheduleTimer;
+    sigemptyset (&act.sa_mask);
+    sigaddset (&act.sa_mask, SIGALRM);
+    if (sigaction (SIGALRM, &act, 0) < 0)
+    {
+	perror ("sigaction for smart scheduler");
+	SmartScheduleDisable = TRUE;
+    }
+}
+
+#ifdef SIG_BLOCK
+static sigset_t	PreviousSignalMask;
+static int	BlockedSignalCount;
+#endif
+
+void
+OsBlockSignals (void)
+{
+#ifdef SIG_BLOCK
+    if (BlockedSignalCount++ == 0)
+    {
+	sigset_t    set;
+	
+	sigemptyset (&set);
+	sigaddset (&set, SIGALRM);
+	sigaddset (&set, SIGVTALRM);
+#ifdef SIGWINCH
+	sigaddset (&set, SIGWINCH);
+#endif
+#ifdef SIGIO
+	sigaddset (&set, SIGIO);
+#endif
+	sigaddset (&set, SIGTSTP);
+	sigaddset (&set, SIGTTIN);
+	sigaddset (&set, SIGTTOU);
+	sigaddset (&set, SIGCHLD);
+	sigprocmask (SIG_BLOCK, &set, &PreviousSignalMask);
+    }
+#endif
+}
+
+void
+OsReleaseSignals (void)
+{
+#ifdef SIG_BLOCK
+    if (--BlockedSignalCount == 0)
+    {
+	sigprocmask (SIG_SETMASK, &PreviousSignalMask, 0);
+    }
+#endif
+}
+
+/*
+ * Pending signals may interfere with core dumping. Provide a
+ * mechanism to block signals when aborting.
+ */
+
+void
+OsAbort (void)
+{
+#ifndef __APPLE__
+    OsBlockSignals();
+#endif
+    abort();
+}
+
+#if !defined(WIN32)
+/*
+ * "safer" versions of system(3), popen(3) and pclose(3) which give up
+ * all privs before running a command.
+ *
+ * This is based on the code in FreeBSD 2.2 libc.
+ *
+ * XXX It'd be good to redirect stderr so that it ends up in the log file
+ * as well.  As it is now, xkbcomp messages don't end up in the log file.
+ */
+
+int
+System(char *command)
+{
+    int pid, p;
+    void (*csig)(int);
+    int status;
+
+    if (!command)
+	return 1;
+
+    csig = signal(SIGCHLD, SIG_DFL);
+    if (csig == SIG_ERR) {
+      perror("signal");
+      return -1;
+    }
+    DebugF("System: `%s'\n", command);
+
+    switch (pid = fork()) {
+    case -1:	/* error */
+	p = -1;
+    case 0:	/* child */
+	if (setgid(getgid()) == -1)
+	    _exit(127);
+	if (setuid(getuid()) == -1)
+	    _exit(127);
+	execl("/bin/sh", "sh", "-c", command, (char *)NULL);
+	_exit(127);
+    default:	/* parent */
+	do {
+	    p = waitpid(pid, &status, 0);
+	} while (p == -1 && errno == EINTR);
+	
+    }
+
+    if (signal(SIGCHLD, csig) == SIG_ERR) {
+      perror("signal");
+      return -1;
+    }
+
+    return p == -1 ? -1 : status;
+}
+
+static struct pid {
+    struct pid *next;
+    FILE *fp;
+    int pid;
+} *pidlist;
+
+OsSigHandlerPtr old_alarm = NULL; /* XXX horrible awful hack */
+
+pointer
+Popen(char *command, char *type)
+{
+    struct pid *cur;
+    FILE *iop;
+    int pdes[2], pid;
+
+    if (command == NULL || type == NULL)
+	return NULL;
+
+    if ((*type != 'r' && *type != 'w') || type[1])
+	return NULL;
+
+    if ((cur = malloc(sizeof(struct pid))) == NULL)
+	return NULL;
+
+    if (pipe(pdes) < 0) {
+	free(cur);
+	return NULL;
+    }
+
+    /* Ignore the smart scheduler while this is going on */
+    old_alarm = OsSignal(SIGALRM, SIG_IGN);
+    if (old_alarm == SIG_ERR) {
+      close(pdes[0]);
+      close(pdes[1]);
+      free(cur);
+      perror("signal");
+      return NULL;
+    }
+
+    switch (pid = fork()) {
+    case -1: 	/* error */
+	close(pdes[0]);
+	close(pdes[1]);
+	free(cur);
+	if (OsSignal(SIGALRM, old_alarm) == SIG_ERR)
+	  perror("signal");
+	return NULL;
+    case 0:	/* child */
+	if (setgid(getgid()) == -1)
+	    _exit(127);
+	if (setuid(getuid()) == -1)
+	    _exit(127);
+	if (*type == 'r') {
+	    if (pdes[1] != 1) {
+		/* stdout */
+		dup2(pdes[1], 1);
+		close(pdes[1]);
+	    }
+	    close(pdes[0]);
+	} else {
+	    if (pdes[0] != 0) {
+		/* stdin */
+		dup2(pdes[0], 0);
+		close(pdes[0]);
+	    }
+	    close(pdes[1]);
+	}
+	execl("/bin/sh", "sh", "-c", command, (char *)NULL);
+	_exit(127);
+    }
+
+    /* Avoid EINTR during stdio calls */
+    OsBlockSignals ();
+    
+    /* parent */
+    if (*type == 'r') {
+	iop = fdopen(pdes[0], type);
+	close(pdes[1]);
+    } else {
+	iop = fdopen(pdes[1], type);
+	close(pdes[0]);
+    }
+
+    cur->fp = iop;
+    cur->pid = pid;
+    cur->next = pidlist;
+    pidlist = cur;
+
+    DebugF("Popen: `%s', fp = %p\n", command, iop);
+
+    return iop;
+}
+
+/* fopen that drops privileges */
+pointer
+Fopen(char *file, char *type)
+{
+    FILE *iop;
+#ifndef HAS_SAVED_IDS_AND_SETEUID
+    struct pid *cur;
+    int pdes[2], pid;
+
+    if (file == NULL || type == NULL)
+	return NULL;
+
+    if ((*type != 'r' && *type != 'w') || type[1])
+	return NULL;
+
+    if ((cur = malloc(sizeof(struct pid))) == NULL)
+	return NULL;
+
+    if (pipe(pdes) < 0) {
+	free(cur);
+	return NULL;
+    }
+
+    switch (pid = fork()) {
+    case -1: 	/* error */
+	close(pdes[0]);
+	close(pdes[1]);
+	free(cur);
+	return NULL;
+    case 0:	/* child */
+	if (setgid(getgid()) == -1)
+	    _exit(127);
+	if (setuid(getuid()) == -1)
+	    _exit(127);
+	if (*type == 'r') {
+	    if (pdes[1] != 1) {
+		/* stdout */
+		dup2(pdes[1], 1);
+		close(pdes[1]);
+	    }
+	    close(pdes[0]);
+	} else {
+	    if (pdes[0] != 0) {
+		/* stdin */
+		dup2(pdes[0], 0);
+		close(pdes[0]);
+	    }
+	    close(pdes[1]);
+	}
+	execl("/bin/cat", "cat", file, (char *)NULL);
+	_exit(127);
+    }
+
+    /* Avoid EINTR during stdio calls */
+    OsBlockSignals ();
+    
+    /* parent */
+    if (*type == 'r') {
+	iop = fdopen(pdes[0], type);
+	close(pdes[1]);
+    } else {
+	iop = fdopen(pdes[1], type);
+	close(pdes[0]);
+    }
+
+    cur->fp = iop;
+    cur->pid = pid;
+    cur->next = pidlist;
+    pidlist = cur;
+
+    DebugF("Fopen(%s), fp = %p\n", file, iop);
+
+    return iop;
+#else
+    int ruid, euid;
+
+    ruid = getuid();
+    euid = geteuid();
+    
+    if (seteuid(ruid) == -1) {
+	    return NULL;
+    }
+    iop = fopen(file, type);
+
+    if (seteuid(euid) == -1) {
+	    fclose(iop);
+	    return NULL;
+    }
+    return iop;
+#endif /* HAS_SAVED_IDS_AND_SETEUID */
+}
+
+int
+Pclose(pointer iop)
+{
+    struct pid *cur, *last;
+    int pstat;
+    int pid;
+
+    DebugF("Pclose: fp = %p\n", iop);
+    fclose(iop);
+
+    for (last = NULL, cur = pidlist; cur; last = cur, cur = cur->next)
+	if (cur->fp == iop)
+	    break;
+    if (cur == NULL)
+	return -1;
+
+    do {
+	pid = waitpid(cur->pid, &pstat, 0);
+    } while (pid == -1 && errno == EINTR);
+
+    if (last == NULL)
+	pidlist = cur->next;
+    else
+	last->next = cur->next;
+    free(cur);
+
+    /* allow EINTR again */
+    OsReleaseSignals ();
+    
+    if (old_alarm && OsSignal(SIGALRM, old_alarm) == SIG_ERR) {
+      perror("signal");
+      return -1;
+    }
+
+    return pid == -1 ? -1 : pstat;
+}
+
+int
+Fclose(pointer iop)
+{
+#ifdef HAS_SAVED_IDS_AND_SETEUID
+    return fclose(iop);
+#else
+    return Pclose(iop);
+#endif
+}
+
+#endif /* !WIN32 */
+
+
+/*
+ * CheckUserParameters: check for long command line arguments and long
+ * environment variables.  By default, these checks are only done when
+ * the server's euid != ruid.  In 3.3.x, these checks were done in an
+ * external wrapper utility.
+ */
+
+/* Consider LD* variables insecure? */
+#ifndef REMOVE_ENV_LD
+#define REMOVE_ENV_LD 1
+#endif
+
+/* Remove long environment variables? */
+#ifndef REMOVE_LONG_ENV
+#define REMOVE_LONG_ENV 1
+#endif
+
+/*
+ * Disallow stdout or stderr as pipes?  It's possible to block the X server
+ * when piping stdout+stderr to a pipe.
+ *
+ * Don't enable this because it looks like it's going to cause problems.
+ */
+#ifndef NO_OUTPUT_PIPES
+#define NO_OUTPUT_PIPES 0
+#endif
+
+
+/* Check args and env only if running setuid (euid == 0 && euid != uid) ? */
+#ifndef CHECK_EUID
+#ifndef WIN32
+#define CHECK_EUID 1
+#else
+#define CHECK_EUID 0
+#endif
+#endif
+
+/*
+ * Maybe the locale can be faked to make isprint(3) report that everything
+ * is printable?  Avoid it by default.
+ */
+#ifndef USE_ISPRINT
+#define USE_ISPRINT 0
+#endif
+
+#define MAX_ARG_LENGTH          128
+#define MAX_ENV_LENGTH          256
+#define MAX_ENV_PATH_LENGTH     2048	/* Limit for *PATH and TERMCAP */
+
+#if USE_ISPRINT
+#include <ctype.h>
+#define checkPrintable(c) isprint(c)
+#else
+#define checkPrintable(c) (((c) & 0x7f) >= 0x20 && ((c) & 0x7f) != 0x7f)
+#endif
+
+enum BadCode {
+    NotBad = 0,
+    UnsafeArg,
+    ArgTooLong,
+    UnprintableArg,
+    EnvTooLong,
+    OutputIsPipe,
+    InternalError
+};
+
+#if defined(VENDORSUPPORT)
+#define BUGADDRESS VENDORSUPPORT
+#elif defined(BUILDERADDR)
+#define BUGADDRESS BUILDERADDR
+#else
+#define BUGADDRESS "xorg@freedesktop.org"
+#endif
+
+void
+CheckUserParameters(int argc, char **argv, char **envp)
+{
+    enum BadCode bad = NotBad;
+    int i = 0, j;
+    char *a, *e = NULL;
+
+#if CHECK_EUID
+    if (geteuid() == 0 && getuid() != geteuid())
+#endif
+    {
+	/* Check each argv[] */
+	for (i = 1; i < argc; i++) {
+	    if (strcmp(argv[i], "-fp") == 0)
+	    {
+		i++; /* continue with next argument. skip the length check */
+		if (i >= argc)
+		    break;
+	    } else
+	    {
+		if (strlen(argv[i]) > MAX_ARG_LENGTH) {
+		    bad = ArgTooLong;
+		    break;
+		}
+	    }
+	    a = argv[i];
+	    while (*a) {
+		if (checkPrintable(*a) == 0) {
+		    bad = UnprintableArg;
+		    break;
+		}
+		a++;
+	    }
+	    if (bad)
+		break;
+	}
+	if (!bad) {
+	    /* Check each envp[] */
+	    for (i = 0; envp[i]; i++) {
+
+		/* Check for bad environment variables and values */
+#if REMOVE_ENV_LD
+		while (envp[i] && (strncmp(envp[i], "LD", 2) == 0)) {
+		    for (j = i; envp[j]; j++) {
+			envp[j] = envp[j+1];
+		    }
+		}
+#endif   
+		if (envp[i] && (strlen(envp[i]) > MAX_ENV_LENGTH)) {
+#if REMOVE_LONG_ENV
+		    for (j = i; envp[j]; j++) {
+			envp[j] = envp[j+1];
+		    }
+		    i--;
+#else
+		    char *eq;
+		    int len;
+
+		    eq = strchr(envp[i], '=');
+		    if (!eq)
+			continue;
+		    len = eq - envp[i];
+		    e = malloc(len + 1);
+		    if (!e) {
+			bad = InternalError;
+			break;
+		    }
+		    strncpy(e, envp[i], len);
+		    e[len] = 0;
+		    if (len >= 4 &&
+			(strcmp(e + len - 4, "PATH") == 0 ||
+			 strcmp(e, "TERMCAP") == 0)) {
+			if (strlen(envp[i]) > MAX_ENV_PATH_LENGTH) {
+			    bad = EnvTooLong;
+			    break;
+			} else {
+			    free(e);
+			}
+		    } else {
+			bad = EnvTooLong;
+			break;
+		    }
+#endif
+		}
+	    }
+	}
+#if NO_OUTPUT_PIPES
+	if (!bad) {
+	    struct stat buf;
+
+	    if (fstat(fileno(stdout), &buf) == 0 && S_ISFIFO(buf.st_mode))
+		bad = OutputIsPipe;
+	    if (fstat(fileno(stderr), &buf) == 0 && S_ISFIFO(buf.st_mode))
+		bad = OutputIsPipe;
+	}
+#endif
+    }
+    switch (bad) {
+    case NotBad:
+	return;
+    case UnsafeArg:
+	ErrorF("Command line argument number %d is unsafe\n", i);
+	break;
+    case ArgTooLong:
+	ErrorF("Command line argument number %d is too long\n", i);
+	break;
+    case UnprintableArg:
+	ErrorF("Command line argument number %d contains unprintable"
+		" characters\n", i);
+	break;
+    case EnvTooLong:
+	ErrorF("Environment variable `%s' is too long\n", e);
+	break;
+    case OutputIsPipe:
+	ErrorF("Stdout and/or stderr is a pipe\n");
+	break;
+    case InternalError:
+	ErrorF("Internal Error\n");
+	break;
+    default:
+	ErrorF("Unknown error\n");
+	break;
+    }
+    FatalError("X server aborted because of unsafe environment\n");
+}
+
+/*
+ * CheckUserAuthorization: check if the user is allowed to start the
+ * X server.  This usually means some sort of PAM checking, and it is
+ * usually only done for setuid servers (uid != euid).
+ */
+
+#ifdef USE_PAM
+#include <security/pam_appl.h>
+#include <security/pam_misc.h>
+#include <pwd.h>
+#endif /* USE_PAM */
+
+void
+CheckUserAuthorization(void)
+{
+#ifdef USE_PAM
+    static struct pam_conv conv = {
+	misc_conv,
+	NULL
+    };
+
+    pam_handle_t *pamh = NULL;
+    struct passwd *pw;
+    int retval;
+
+    if (getuid() != geteuid()) {
+	pw = getpwuid(getuid());
+	if (pw == NULL)
+	    FatalError("getpwuid() failed for uid %d\n", getuid());
+
+	retval = pam_start("xserver", pw->pw_name, &conv, &pamh);
+	if (retval != PAM_SUCCESS)
+	    FatalError("pam_start() failed.\n"
+			"\tMissing or mangled PAM config file or module?\n");
+
+	retval = pam_authenticate(pamh, 0);
+	if (retval != PAM_SUCCESS) {
+	    pam_end(pamh, retval);
+	    FatalError("PAM authentication failed, cannot start X server.\n"
+			"\tPerhaps you do not have console ownership?\n");
+	}
+
+	retval = pam_acct_mgmt(pamh, 0);
+	if (retval != PAM_SUCCESS) {
+	    pam_end(pamh, retval);
+	    FatalError("PAM authentication failed, cannot start X server.\n"
+			"\tPerhaps you do not have console ownership?\n");
+	}
+
+	/* this is not a session, so do not do session management */
+	pam_end(pamh, PAM_SUCCESS);
+    }
+#endif
+}
+
+/*
+ * Tokenize a string into a NULL terminated array of strings. Always returns
+ * an allocated array unless an error occurs.
+ */
+char**
+xstrtokenize(const char *str, const char *separators)
+{
+    char **list, **nlist;
+    char *tok, *tmp;
+    unsigned num = 0, n;
+
+    if (!str)
+        return NULL;
+    list = calloc(1, sizeof(*list));
+    if (!list)
+        return NULL;
+    tmp = strdup(str);
+    if (!tmp)
+        goto error;
+    for (tok = strtok(tmp, separators); tok; tok = strtok(NULL, separators)) {
+        nlist = realloc(list, (num + 2) * sizeof(*list));
+        if (!nlist)
+            goto error;
+        list = nlist;
+        list[num] = strdup(tok);
+        if (!list[num])
+            goto error;
+        list[++num] = NULL;
+    }
+    free(tmp);
+    return list;
+
+error:
+    free(tmp);
+    for (n = 0; n < num; n++)
+        free(list[n]);
+    free(list);
+    return NULL;
+}