xserver git update 18/10/2010

1 files changed, 617 insertions, 610 deletions

diff --git a/xorg-server/os/log.c b/xorg-server/os/log.c
index 774f0b3cd..ee4b45fa4 100644
--- a/xorg-server/os/log.c
+++ b/xorg-server/os/log.c
@@ -1,610 +1,617 @@
-/*

-

-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.

-

-*/

-

-/*

- * Copyright (c) 1997-2003 by The XFree86 Project, Inc.

- *

- * 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, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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 copyright holder(s)

- * and author(s) 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 copyright holder(s) and author(s).

- */

-

-

-#ifdef HAVE_DIX_CONFIG_H

-#include <dix-config.h>

-#endif

-

-#include <X11/Xos.h>

-#include <stdio.h>

-#include <time.h>

-#include <sys/stat.h>

-#include <stdarg.h>

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

-#include <errno.h>

-

-#include "input.h"

-#include "site.h"

-#include "opaque.h"

-

-#ifdef WIN32

-#include <process.h>

-#define getpid(x) _getpid(x)

-#endif

-

-#ifdef XF86BIGFONT

-#include "xf86bigfontsrv.h"

-#endif

-

-#ifdef DDXOSVERRORF

-void (*OsVendorVErrorFProc)(const char *, va_list args) = NULL;

-#endif

-

-static FILE *logFile = NULL;

-static Bool logFlush = FALSE;

-static Bool logSync = FALSE;

-static int logVerbosity = DEFAULT_LOG_VERBOSITY;

-static int logFileVerbosity = DEFAULT_LOG_FILE_VERBOSITY;

-

-/* Buffer to information logged before the log file is opened. */

-static char *saveBuffer = NULL;

-static int bufferSize = 0, bufferUnused = 0, bufferPos = 0;

-static Bool needBuffer = TRUE;

-

-#ifdef __APPLE__

-static char __crashreporter_info_buff__[4096] = {0};

-static const char *__crashreporter_info__ = &__crashreporter_info_buff__[0];

-asm (".desc ___crashreporter_info__, 0x10");

-#endif

-

-/* Prefix strings for log messages. */

-#ifndef X_UNKNOWN_STRING

-#define X_UNKNOWN_STRING		"(\?\?)"

-#endif

-#ifndef X_PROBE_STRING

-#define X_PROBE_STRING			"(--)"

-#endif

-#ifndef X_CONFIG_STRING

-#define X_CONFIG_STRING			"(**)"

-#endif

-#ifndef X_DEFAULT_STRING

-#define X_DEFAULT_STRING		"(==)"

-#endif

-#ifndef X_CMDLINE_STRING

-#define X_CMDLINE_STRING		"(++)"

-#endif

-#ifndef X_NOTICE_STRING

-#define X_NOTICE_STRING			"(!!)"

-#endif

-#ifndef X_ERROR_STRING

-#define X_ERROR_STRING			"(EE)"

-#endif

-#ifndef X_WARNING_STRING

-#define X_WARNING_STRING		"(WW)"

-#endif

-#ifndef X_INFO_STRING

-#define X_INFO_STRING			"(II)"

-#endif

-#ifndef X_NOT_IMPLEMENTED_STRING

-#define X_NOT_IMPLEMENTED_STRING	"(NI)"

-#endif

-

-/*

- * LogInit is called to start logging to a file.  It is also called (with

- * NULL arguments) when logging to a file is not wanted.  It must always be

- * called, otherwise log messages will continue to accumulate in a buffer.

- *

- * %s, if present in the fname or backup strings, is expanded to the display

- * string.

- */

-

-const char *

-LogInit(const char *fname, const char *backup)

-{

-    char *logFileName = NULL;

-

-    if (fname && *fname) {

-	/* malloc() can't be used yet. */

-	logFileName = malloc(strlen(fname) + strlen(display) + 1);

-	if (!logFileName)

-	    FatalError("Cannot allocate space for the log file name\n");

-	sprintf(logFileName, fname, display);

-

-	if (backup && *backup) {

-	    struct stat buf;

-

-	    if (!stat(logFileName, &buf) && S_ISREG(buf.st_mode)) {

-		char *suffix;

-		char *oldLog;

-

-		oldLog = malloc(strlen(logFileName) + strlen(backup) +

-				strlen(display) + 1);

-		suffix = malloc(strlen(backup) + strlen(display) + 1);

-		if (!oldLog || !suffix)

-		    FatalError("Cannot allocate space for the log file name\n");

-		sprintf(suffix, backup, display);

-		sprintf(oldLog, "%s%s", logFileName, suffix);

-		free(suffix);

-		if (rename(logFileName, oldLog) == -1) {

-		    FatalError("Cannot move old log file \"%s\" to \"%s\"\n",

-			       logFileName, oldLog);

-		}

-		free(oldLog);

-	    }

-	}

-	if ((logFile = fopen(logFileName, "w")) == NULL)

-	    FatalError("Cannot open log file \"%s\"\n", logFileName);

-	setvbuf(logFile, NULL, _IONBF, 0);

-

-	/* Flush saved log information. */

-	if (saveBuffer && bufferSize > 0) {

-	    fwrite(saveBuffer, bufferPos, 1, logFile);

-	    fflush(logFile);

-#ifndef WIN32

-	    fsync(fileno(logFile));

-#endif

-	}

-    }

-

-    /*

-     * Unconditionally free the buffer, and flag that the buffer is no longer

-     * needed.

-     */

-    if (saveBuffer && bufferSize > 0) {

-	free(saveBuffer);	/* Must be free(), not free() */

-	saveBuffer = NULL;

-	bufferSize = 0;

-    }

-    needBuffer = FALSE;

-

-    return logFileName;

-}

-

-void

-LogClose(void)

-{

-    if (logFile) {

-	fclose(logFile);

-	logFile = NULL;

-    }

-}

-

-Bool

-LogSetParameter(LogParameter param, int value)

-{

-    switch (param) {

-    case XLOG_FLUSH:

-	logFlush = value ? TRUE : FALSE;

-	return TRUE;

-    case XLOG_SYNC:

-	logSync = value ? TRUE : FALSE;

-	return TRUE;

-    case XLOG_VERBOSITY:

-	logVerbosity = value;

-	return TRUE;

-    case XLOG_FILE_VERBOSITY:

-	logFileVerbosity = value;

-	return TRUE;

-    default:

-	return FALSE;

-    }

-}

-

-/* This function does the actual log message writes. */

-

-void

-LogVWrite(int verb, const char *f, va_list args)

-{

-    static char tmpBuffer[1024];

-    int len = 0;

-    static Bool newline = TRUE;

-

-    if (newline) {

-	sprintf(tmpBuffer, "[%10.3f] ", GetTimeInMillis() / 1000.0);

-	len = strlen(tmpBuffer);

-	if (logFile)

-	    fwrite(tmpBuffer, len, 1, logFile);

-    }

-

-    /*

-     * Since a va_list can only be processed once, write the string to a

-     * buffer, and then write the buffer out to the appropriate output

-     * stream(s).

-     */

-    if (verb < 0 || logFileVerbosity >= verb || logVerbosity >= verb) {

-	vsnprintf(tmpBuffer, sizeof(tmpBuffer), f, args);

-	len = strlen(tmpBuffer);

-    }

-    newline = (tmpBuffer[len-1] == '\n');

-    if ((verb < 0 || logVerbosity >= verb) && len > 0)

-	fwrite(tmpBuffer, len, 1, stderr);

-    if ((verb < 0 || logFileVerbosity >= verb) && len > 0) {

-	if (logFile) {

-	    fwrite(tmpBuffer, len, 1, logFile);

-	    if (logFlush) {

-		fflush(logFile);

-#ifndef WIN32

-		if (logSync)

-		    fsync(fileno(logFile));

-#endif

-	    }

-	} else if (needBuffer) {

-	    /*

-	     * Note, this code is used before OsInit() has been called, so

-	     * malloc() and friends can't be used.

-	     */

-	    if (len > bufferUnused) {

-		bufferSize += 1024;

-		bufferUnused += 1024;

-		if (saveBuffer)

-		    saveBuffer = realloc(saveBuffer, bufferSize);

-		else

-		    saveBuffer = malloc(bufferSize);

-		if (!saveBuffer)

-		    FatalError("realloc() failed while saving log messages\n");

-	    }

-	    bufferUnused -= len;

-	    memcpy(saveBuffer + bufferPos, tmpBuffer, len);

-	    bufferPos += len;

-	}

-    }

-}

-

-void

-LogWrite(int verb, const char *f, ...)

-{

-    va_list args;

-

-    va_start(args, f);

-    LogVWrite(verb, f, args);

-    va_end(args);

-}

-

-void

-LogVMessageVerb(MessageType type, int verb, const char *format, va_list args)

-{

-    const char *s  = X_UNKNOWN_STRING;

-    char tmpBuf[1024];

-

-    /* Ignore verbosity for X_ERROR */

-    if (logVerbosity >= verb || logFileVerbosity >= verb || type == X_ERROR) {

-	switch (type) {

-	case X_PROBED:

-	    s = X_PROBE_STRING;

-	    break;

-	case X_CONFIG:

-	    s = X_CONFIG_STRING;

-	    break;

-	case X_DEFAULT:

-	    s = X_DEFAULT_STRING;

-	    break;

-	case X_CMDLINE:

-	    s = X_CMDLINE_STRING;

-	    break;

-	case X_NOTICE:

-	    s = X_NOTICE_STRING;

-	    break;

-	case X_ERROR:

-	    s = X_ERROR_STRING;

-	    if (verb > 0)

-		verb = 0;

-	    break;

-	case X_WARNING:

-	    s = X_WARNING_STRING;

-	    break;

-	case X_INFO:

-	    s = X_INFO_STRING;

-	    break;

-	case X_NOT_IMPLEMENTED:

-	    s = X_NOT_IMPLEMENTED_STRING;

-	    break;

-	case X_UNKNOWN:

-	    s = X_UNKNOWN_STRING;

-	    break;

-	case X_NONE:

-	    s = NULL;

-	    break;

-	}

-

-        /* if s is not NULL we need a space before format */

-        snprintf(tmpBuf, sizeof(tmpBuf), "%s%s%s", s ? s : "",

-                                                   s ? " " : "",

-                                                   format);

-        LogVWrite(verb, tmpBuf, args);

-    }

-}

-

-/* Log message with verbosity level specified. */

-void

-LogMessageVerb(MessageType type, int verb, const char *format, ...)

-{

-    va_list ap;

-

-    va_start(ap, format);

-    LogVMessageVerb(type, verb, format, ap);

-    va_end(ap);

-}

-

-/* Log a message with the standard verbosity level of 1. */

-void

-LogMessage(MessageType type, const char *format, ...)

-{

-    va_list ap;

-

-    va_start(ap, format);

-    LogVMessageVerb(type, 1, format, ap);

-    va_end(ap);

-}

-

-void

-AbortServer(void) _X_NORETURN;

-

-void

-AbortServer(void)

-{

-#ifdef XF86BIGFONT

-    XF86BigfontCleanup();

-#endif

-    CloseWellKnownConnections();

-    OsCleanup(TRUE);

-    CloseDownDevices();

-    AbortDDX();

-    fflush(stderr);

-    if (CoreDump)

-	OsAbort();

-    exit (1);

-}

-

-#define AUDIT_PREFIX "AUDIT: %s: %ld: "

-#ifndef AUDIT_TIMEOUT

-#define AUDIT_TIMEOUT ((CARD32)(120 * 1000)) /* 2 mn */

-#endif

-

-static int nrepeat = 0;

-static int oldlen = -1;

-static OsTimerPtr auditTimer = NULL;

-

-void

-FreeAuditTimer(void)

-{

-    if (auditTimer != NULL) {

-	/* Force output of pending messages */

-	TimerForce(auditTimer);

-	TimerFree(auditTimer);

-	auditTimer = NULL;

-    }

-}

-

-static char *

-AuditPrefix(void)

-{

-    time_t tm;

-    char *autime, *s;

-    char *tmpBuf;

-    int len;

-

-    time(&tm);

-    autime = ctime(&tm);

-    if ((s = strchr(autime, '\n')))

-	*s = '\0';

-    len = strlen(AUDIT_PREFIX) + strlen(autime) + 10 + 1;

-    tmpBuf = malloc(len);

-    if (!tmpBuf)

-	return NULL;

-    snprintf(tmpBuf, len, AUDIT_PREFIX, autime, (unsigned long)getpid());

-    return tmpBuf;

-}

-

-void

-AuditF(const char * f, ...)

-{

-    va_list args;

-

-    va_start(args, f);

-

-    VAuditF(f, args);

-    va_end(args);

-}

-

-static CARD32

-AuditFlush(OsTimerPtr timer, CARD32 now, pointer arg)

-{

-    char *prefix;

-

-    if (nrepeat > 0) {

-	prefix = AuditPrefix();

-	ErrorF("%slast message repeated %d times\n",

-	       prefix != NULL ? prefix : "", nrepeat);

-	nrepeat = 0;

-	if (prefix != NULL)

-	    free(prefix);

-	return AUDIT_TIMEOUT;

-    } else {

-	/* if the timer expires without anything to print, flush the message */

-	oldlen = -1;

-	return 0;

-    }

-}

-

-void

-VAuditF(const char *f, va_list args)

-{

-    char *prefix;

-    char buf[1024];

-    int len;

-    static char oldbuf[1024];

-

-    prefix = AuditPrefix();

-    len = vsnprintf(buf, sizeof(buf), f, args);

-

-    if (len == oldlen && strcmp(buf, oldbuf) == 0) {

-	/* Message already seen */

-	nrepeat++;

-    } else {

-	/* new message */

-	if (auditTimer != NULL)

-	    TimerForce(auditTimer);

-	ErrorF("%s%s", prefix != NULL ? prefix : "", buf);

-	strlcpy(oldbuf, buf, sizeof(oldbuf));

-	oldlen = len;

-	nrepeat = 0;

-	auditTimer = TimerSet(auditTimer, 0, AUDIT_TIMEOUT, AuditFlush, NULL);

-    }

-    if (prefix != NULL)

-	free(prefix);

-}

-

-void

-FatalError(const char *f, ...)

-{

-    va_list args;

-    static Bool beenhere = FALSE;

-

-    if (beenhere)

-	ErrorF("\nFatalError re-entered, aborting\n");

-    else

-	ErrorF("\nFatal server error:\n");

-

-    va_start(args, f);

-#ifdef __APPLE__

-    (void)vsnprintf(__crashreporter_info_buff__, sizeof(__crashreporter_info_buff__), f, args);

-#endif

-    VErrorF(f, args);

-    va_end(args);

-    ErrorF("\n");

-    if (!beenhere)

-	OsVendorFatalError();

-    if (!beenhere) {

-	beenhere = TRUE;

-	AbortServer();

-    } else

-	OsAbort();

-    /*NOTREACHED*/

-}

-

-void

-VErrorF(const char *f, va_list args)

-{

-#ifdef DDXOSVERRORF

-    if (OsVendorVErrorFProc)

-	OsVendorVErrorFProc(f, args);

-    else

-	LogVWrite(-1, f, args);

-#else

-    LogVWrite(-1, f, args);

-#endif

-}

-

-void

-ErrorF(const char * f, ...)

-{

-    va_list args;

-

-    va_start(args, f);

-    VErrorF(f, args);

-    va_end(args);

-}

-

-/* A perror() workalike. */

-

-void

-Error(char *str)

-{

-    char *err = NULL;

-    int saveErrno = errno;

-

-    if (str) {

-	err = malloc(strlen(strerror(saveErrno)) + strlen(str) + 2 + 1);

-	if (!err)

-	    return;

-	sprintf(err, "%s: ", str);

-	strcat(err, strerror(saveErrno));

-	LogWrite(-1, "%s", err);

-	free(err);

-    } else

-	LogWrite(-1, "%s", strerror(saveErrno));

-}

-

-void

-LogPrintMarkers(void)

-{

-    /* Show what the message marker symbols mean. */

-    LogWrite(0, "Markers: ");

-    LogMessageVerb(X_PROBED, 0, "probed, ");

-    LogMessageVerb(X_CONFIG, 0, "from config file, ");

-    LogMessageVerb(X_DEFAULT, 0, "default setting,\n\t");

-    LogMessageVerb(X_CMDLINE, 0, "from command line, ");

-    LogMessageVerb(X_NOTICE, 0, "notice, ");

-    LogMessageVerb(X_INFO, 0, "informational,\n\t");

-    LogMessageVerb(X_WARNING, 0, "warning, ");

-    LogMessageVerb(X_ERROR, 0, "error, ");

-    LogMessageVerb(X_NOT_IMPLEMENTED, 0, "not implemented, ");

-    LogMessageVerb(X_UNKNOWN, 0, "unknown.\n");

-}

-

+/*
+
+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.
+
+*/
+
+/*
+ * Copyright (c) 1997-2003 by The XFree86 Project, Inc.
+ *
+ * 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, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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 copyright holder(s)
+ * and author(s) 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 copyright holder(s) and author(s).
+ */
+
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/Xos.h>
+#include <stdio.h>
+#include <time.h>
+#include <sys/stat.h>
+#include <stdarg.h>
+#include <stdlib.h>	/* for malloc() */
+#include <errno.h>
+
+#include "input.h"
+#include "site.h"
+#include "opaque.h"
+
+#ifdef WIN32
+#include <process.h>
+#define getpid(x) _getpid(x)
+#endif
+
+#ifdef XF86BIGFONT
+#include "xf86bigfontsrv.h"
+#endif
+
+#ifdef DDXOSVERRORF
+void (*OsVendorVErrorFProc)(const char *, va_list args) = NULL;
+#endif
+
+static FILE *logFile = NULL;
+static Bool logFlush = FALSE;
+static Bool logSync = FALSE;
+static int logVerbosity = DEFAULT_LOG_VERBOSITY;
+static int logFileVerbosity = DEFAULT_LOG_FILE_VERBOSITY;
+
+/* Buffer to information logged before the log file is opened. */
+static char *saveBuffer = NULL;
+static int bufferSize = 0, bufferUnused = 0, bufferPos = 0;
+static Bool needBuffer = TRUE;
+
+#ifdef __APPLE__
+#include <AvailabilityMacros.h>
+
+static char __crashreporter_info_buff__[4096] = {0};
+static const char *__crashreporter_info__ = &__crashreporter_info_buff__[0];
+#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1050
+// This is actually a toolchain requirement, but I'm not sure the correct check,        
+// but it should be fine to just only include it for Leopard and later.  This line
+// just tells the linker to never strip this symbol (such as for space optimization)
+asm (".desc ___crashreporter_info__, 0x10");
+#endif
+#endif
+
+/* Prefix strings for log messages. */
+#ifndef X_UNKNOWN_STRING
+#define X_UNKNOWN_STRING		"(\?\?)"
+#endif
+#ifndef X_PROBE_STRING
+#define X_PROBE_STRING			"(--)"
+#endif
+#ifndef X_CONFIG_STRING
+#define X_CONFIG_STRING			"(**)"
+#endif
+#ifndef X_DEFAULT_STRING
+#define X_DEFAULT_STRING		"(==)"
+#endif
+#ifndef X_CMDLINE_STRING
+#define X_CMDLINE_STRING		"(++)"
+#endif
+#ifndef X_NOTICE_STRING
+#define X_NOTICE_STRING			"(!!)"
+#endif
+#ifndef X_ERROR_STRING
+#define X_ERROR_STRING			"(EE)"
+#endif
+#ifndef X_WARNING_STRING
+#define X_WARNING_STRING		"(WW)"
+#endif
+#ifndef X_INFO_STRING
+#define X_INFO_STRING			"(II)"
+#endif
+#ifndef X_NOT_IMPLEMENTED_STRING
+#define X_NOT_IMPLEMENTED_STRING	"(NI)"
+#endif
+
+/*
+ * LogInit is called to start logging to a file.  It is also called (with
+ * NULL arguments) when logging to a file is not wanted.  It must always be
+ * called, otherwise log messages will continue to accumulate in a buffer.
+ *
+ * %s, if present in the fname or backup strings, is expanded to the display
+ * string.
+ */
+
+const char *
+LogInit(const char *fname, const char *backup)
+{
+    char *logFileName = NULL;
+
+    if (fname && *fname) {
+	/* malloc() can't be used yet. */
+	logFileName = malloc(strlen(fname) + strlen(display) + 1);
+	if (!logFileName)
+	    FatalError("Cannot allocate space for the log file name\n");
+	sprintf(logFileName, fname, display);
+
+	if (backup && *backup) {
+	    struct stat buf;
+
+	    if (!stat(logFileName, &buf) && S_ISREG(buf.st_mode)) {
+		char *suffix;
+		char *oldLog;
+
+		oldLog = malloc(strlen(logFileName) + strlen(backup) +
+				strlen(display) + 1);
+		suffix = malloc(strlen(backup) + strlen(display) + 1);
+		if (!oldLog || !suffix)
+		    FatalError("Cannot allocate space for the log file name\n");
+		sprintf(suffix, backup, display);
+		sprintf(oldLog, "%s%s", logFileName, suffix);
+		free(suffix);
+		if (rename(logFileName, oldLog) == -1) {
+		    FatalError("Cannot move old log file \"%s\" to \"%s\"\n",
+			       logFileName, oldLog);
+		}
+		free(oldLog);
+	    }
+	}
+	if ((logFile = fopen(logFileName, "w")) == NULL)
+	    FatalError("Cannot open log file \"%s\"\n", logFileName);
+	setvbuf(logFile, NULL, _IONBF, 0);
+
+	/* Flush saved log information. */
+	if (saveBuffer && bufferSize > 0) {
+	    fwrite(saveBuffer, bufferPos, 1, logFile);
+	    fflush(logFile);
+#ifndef WIN32
+	    fsync(fileno(logFile));
+#endif
+	}
+    }
+
+    /*
+     * Unconditionally free the buffer, and flag that the buffer is no longer
+     * needed.
+     */
+    if (saveBuffer && bufferSize > 0) {
+	free(saveBuffer);	/* Must be free(), not free() */
+	saveBuffer = NULL;
+	bufferSize = 0;
+    }
+    needBuffer = FALSE;
+
+    return logFileName;
+}
+
+void
+LogClose(void)
+{
+    if (logFile) {
+	fclose(logFile);
+	logFile = NULL;
+    }
+}
+
+Bool
+LogSetParameter(LogParameter param, int value)
+{
+    switch (param) {
+    case XLOG_FLUSH:
+	logFlush = value ? TRUE : FALSE;
+	return TRUE;
+    case XLOG_SYNC:
+	logSync = value ? TRUE : FALSE;
+	return TRUE;
+    case XLOG_VERBOSITY:
+	logVerbosity = value;
+	return TRUE;
+    case XLOG_FILE_VERBOSITY:
+	logFileVerbosity = value;
+	return TRUE;
+    default:
+	return FALSE;
+    }
+}
+
+/* This function does the actual log message writes. */
+
+void
+LogVWrite(int verb, const char *f, va_list args)
+{
+    static char tmpBuffer[1024];
+    int len = 0;
+    static Bool newline = TRUE;
+
+    if (newline) {
+	sprintf(tmpBuffer, "[%10.3f] ", GetTimeInMillis() / 1000.0);
+	len = strlen(tmpBuffer);
+	if (logFile)
+	    fwrite(tmpBuffer, len, 1, logFile);
+    }
+
+    /*
+     * Since a va_list can only be processed once, write the string to a
+     * buffer, and then write the buffer out to the appropriate output
+     * stream(s).
+     */
+    if (verb < 0 || logFileVerbosity >= verb || logVerbosity >= verb) {
+	vsnprintf(tmpBuffer, sizeof(tmpBuffer), f, args);
+	len = strlen(tmpBuffer);
+    }
+    newline = (tmpBuffer[len-1] == '\n');
+    if ((verb < 0 || logVerbosity >= verb) && len > 0)
+	fwrite(tmpBuffer, len, 1, stderr);
+    if ((verb < 0 || logFileVerbosity >= verb) && len > 0) {
+	if (logFile) {
+	    fwrite(tmpBuffer, len, 1, logFile);
+	    if (logFlush) {
+		fflush(logFile);
+#ifndef WIN32
+		if (logSync)
+		    fsync(fileno(logFile));
+#endif
+	    }
+	} else if (needBuffer) {
+	    /*
+	     * Note, this code is used before OsInit() has been called, so
+	     * malloc() and friends can't be used.
+	     */
+	    if (len > bufferUnused) {
+		bufferSize += 1024;
+		bufferUnused += 1024;
+		if (saveBuffer)
+		    saveBuffer = realloc(saveBuffer, bufferSize);
+		else
+		    saveBuffer = malloc(bufferSize);
+		if (!saveBuffer)
+		    FatalError("realloc() failed while saving log messages\n");
+	    }
+	    bufferUnused -= len;
+	    memcpy(saveBuffer + bufferPos, tmpBuffer, len);
+	    bufferPos += len;
+	}
+    }
+}
+
+void
+LogWrite(int verb, const char *f, ...)
+{
+    va_list args;
+
+    va_start(args, f);
+    LogVWrite(verb, f, args);
+    va_end(args);
+}
+
+void
+LogVMessageVerb(MessageType type, int verb, const char *format, va_list args)
+{
+    const char *s  = X_UNKNOWN_STRING;
+    char tmpBuf[1024];
+
+    /* Ignore verbosity for X_ERROR */
+    if (logVerbosity >= verb || logFileVerbosity >= verb || type == X_ERROR) {
+	switch (type) {
+	case X_PROBED:
+	    s = X_PROBE_STRING;
+	    break;
+	case X_CONFIG:
+	    s = X_CONFIG_STRING;
+	    break;
+	case X_DEFAULT:
+	    s = X_DEFAULT_STRING;
+	    break;
+	case X_CMDLINE:
+	    s = X_CMDLINE_STRING;
+	    break;
+	case X_NOTICE:
+	    s = X_NOTICE_STRING;
+	    break;
+	case X_ERROR:
+	    s = X_ERROR_STRING;
+	    if (verb > 0)
+		verb = 0;
+	    break;
+	case X_WARNING:
+	    s = X_WARNING_STRING;
+	    break;
+	case X_INFO:
+	    s = X_INFO_STRING;
+	    break;
+	case X_NOT_IMPLEMENTED:
+	    s = X_NOT_IMPLEMENTED_STRING;
+	    break;
+	case X_UNKNOWN:
+	    s = X_UNKNOWN_STRING;
+	    break;
+	case X_NONE:
+	    s = NULL;
+	    break;
+	}
+
+        /* if s is not NULL we need a space before format */
+        snprintf(tmpBuf, sizeof(tmpBuf), "%s%s%s", s ? s : "",
+                                                   s ? " " : "",
+                                                   format);
+        LogVWrite(verb, tmpBuf, args);
+    }
+}
+
+/* Log message with verbosity level specified. */
+void
+LogMessageVerb(MessageType type, int verb, const char *format, ...)
+{
+    va_list ap;
+
+    va_start(ap, format);
+    LogVMessageVerb(type, verb, format, ap);
+    va_end(ap);
+}
+
+/* Log a message with the standard verbosity level of 1. */
+void
+LogMessage(MessageType type, const char *format, ...)
+{
+    va_list ap;
+
+    va_start(ap, format);
+    LogVMessageVerb(type, 1, format, ap);
+    va_end(ap);
+}
+
+void
+AbortServer(void) _X_NORETURN;
+
+void
+AbortServer(void)
+{
+#ifdef XF86BIGFONT
+    XF86BigfontCleanup();
+#endif
+    CloseWellKnownConnections();
+    OsCleanup(TRUE);
+    CloseDownDevices();
+    AbortDDX();
+    fflush(stderr);
+    if (CoreDump)
+	OsAbort();
+    exit (1);
+}
+
+#define AUDIT_PREFIX "AUDIT: %s: %ld: "
+#ifndef AUDIT_TIMEOUT
+#define AUDIT_TIMEOUT ((CARD32)(120 * 1000)) /* 2 mn */
+#endif
+
+static int nrepeat = 0;
+static int oldlen = -1;
+static OsTimerPtr auditTimer = NULL;
+
+void
+FreeAuditTimer(void)
+{
+    if (auditTimer != NULL) {
+	/* Force output of pending messages */
+	TimerForce(auditTimer);
+	TimerFree(auditTimer);
+	auditTimer = NULL;
+    }
+}
+
+static char *
+AuditPrefix(void)
+{
+    time_t tm;
+    char *autime, *s;
+    char *tmpBuf;
+    int len;
+
+    time(&tm);
+    autime = ctime(&tm);
+    if ((s = strchr(autime, '\n')))
+	*s = '\0';
+    len = strlen(AUDIT_PREFIX) + strlen(autime) + 10 + 1;
+    tmpBuf = malloc(len);
+    if (!tmpBuf)
+	return NULL;
+    snprintf(tmpBuf, len, AUDIT_PREFIX, autime, (unsigned long)getpid());
+    return tmpBuf;
+}
+
+void
+AuditF(const char * f, ...)
+{
+    va_list args;
+
+    va_start(args, f);
+
+    VAuditF(f, args);
+    va_end(args);
+}
+
+static CARD32
+AuditFlush(OsTimerPtr timer, CARD32 now, pointer arg)
+{
+    char *prefix;
+
+    if (nrepeat > 0) {
+	prefix = AuditPrefix();
+	ErrorF("%slast message repeated %d times\n",
+	       prefix != NULL ? prefix : "", nrepeat);
+	nrepeat = 0;
+	if (prefix != NULL)
+	    free(prefix);
+	return AUDIT_TIMEOUT;
+    } else {
+	/* if the timer expires without anything to print, flush the message */
+	oldlen = -1;
+	return 0;
+    }
+}
+
+void
+VAuditF(const char *f, va_list args)
+{
+    char *prefix;
+    char buf[1024];
+    int len;
+    static char oldbuf[1024];
+
+    prefix = AuditPrefix();
+    len = vsnprintf(buf, sizeof(buf), f, args);
+
+    if (len == oldlen && strcmp(buf, oldbuf) == 0) {
+	/* Message already seen */
+	nrepeat++;
+    } else {
+	/* new message */
+	if (auditTimer != NULL)
+	    TimerForce(auditTimer);
+	ErrorF("%s%s", prefix != NULL ? prefix : "", buf);
+	strlcpy(oldbuf, buf, sizeof(oldbuf));
+	oldlen = len;
+	nrepeat = 0;
+	auditTimer = TimerSet(auditTimer, 0, AUDIT_TIMEOUT, AuditFlush, NULL);
+    }
+    if (prefix != NULL)
+	free(prefix);
+}
+
+void
+FatalError(const char *f, ...)
+{
+    va_list args;
+    static Bool beenhere = FALSE;
+
+    if (beenhere)
+	ErrorF("\nFatalError re-entered, aborting\n");
+    else
+	ErrorF("\nFatal server error:\n");
+
+    va_start(args, f);
+#ifdef __APPLE__
+    (void)vsnprintf(__crashreporter_info_buff__, sizeof(__crashreporter_info_buff__), f, args);
+#endif
+    VErrorF(f, args);
+    va_end(args);
+    ErrorF("\n");
+    if (!beenhere)
+	OsVendorFatalError();
+    if (!beenhere) {
+	beenhere = TRUE;
+	AbortServer();
+    } else
+	OsAbort();
+    /*NOTREACHED*/
+}
+
+void
+VErrorF(const char *f, va_list args)
+{
+#ifdef DDXOSVERRORF
+    if (OsVendorVErrorFProc)
+	OsVendorVErrorFProc(f, args);
+    else
+	LogVWrite(-1, f, args);
+#else
+    LogVWrite(-1, f, args);
+#endif
+}
+
+void
+ErrorF(const char * f, ...)
+{
+    va_list args;
+
+    va_start(args, f);
+    VErrorF(f, args);
+    va_end(args);
+}
+
+/* A perror() workalike. */
+
+void
+Error(char *str)
+{
+    char *err = NULL;
+    int saveErrno = errno;
+
+    if (str) {
+	err = malloc(strlen(strerror(saveErrno)) + strlen(str) + 2 + 1);
+	if (!err)
+	    return;
+	sprintf(err, "%s: ", str);
+	strcat(err, strerror(saveErrno));
+	LogWrite(-1, "%s", err);
+	free(err);
+    } else
+	LogWrite(-1, "%s", strerror(saveErrno));
+}
+
+void
+LogPrintMarkers(void)
+{
+    /* Show what the message marker symbols mean. */
+    LogWrite(0, "Markers: ");
+    LogMessageVerb(X_PROBED, 0, "probed, ");
+    LogMessageVerb(X_CONFIG, 0, "from config file, ");
+    LogMessageVerb(X_DEFAULT, 0, "default setting,\n\t");
+    LogMessageVerb(X_CMDLINE, 0, "from command line, ");
+    LogMessageVerb(X_NOTICE, 0, "notice, ");
+    LogMessageVerb(X_INFO, 0, "informational,\n\t");
+    LogMessageVerb(X_WARNING, 0, "warning, ");
+    LogMessageVerb(X_ERROR, 0, "error, ");
+    LogMessageVerb(X_NOT_IMPLEMENTED, 0, "not implemented, ");
+    LogMessageVerb(X_UNKNOWN, 0, "unknown.\n");
+}
+