diff options
Diffstat (limited to 'xorg-server/os/log.c')
| -rw-r--r-- | xorg-server/os/log.c | 1222 |
1 files changed, 617 insertions, 605 deletions
diff --git a/xorg-server/os/log.c b/xorg-server/os/log.c index f51976284..abf0cb86f 100644 --- a/xorg-server/os/log.c +++ b/xorg-server/os/log.c @@ -1,605 +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 __clang__ -#pragma clang diagnostic ignored "-Wformat-nonliteral" -#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__ __attribute__((__used__)) = &__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) { - if (asprintf(&logFileName, fname, display) == -1) - FatalError("Cannot allocate space for the log file name\n"); - - if (backup && *backup) { - struct stat buf; - - if (!stat(logFileName, &buf) && S_ISREG(buf.st_mode)) { - char *suffix; - char *oldLog; - - if ((asprintf(&suffix, backup, display) == -1) || - (asprintf(&oldLog, "%s%s", logFileName, suffix) == -1)) - FatalError("Cannot allocate space for the log file name\n"); - 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(enum ExitCode error) -{ - if (logFile) { - ErrorF("Server terminated %s (%d). Closing log file.\n", - (error == EXIT_NO_ERROR) ? "successfully" : "with error", error); - 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) { - if (len > bufferUnused) { - bufferSize += 1024; - bufferUnused += 1024; - saveBuffer = realloc(saveBuffer, 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(EXIT_ERR_ABORT); - 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; - 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); - } - 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__ - { - va_list args2; - va_copy(args2, args); - (void)vsnprintf(__crashreporter_info_buff__, sizeof(__crashreporter_info_buff__), f, args2); - va_end(args2); - } -#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(const char *str) -{ - const char *err = strerror(errno); - - if (str) - LogWrite(-1, "%s: %s", str, err); - else - LogWrite(-1, "%s", err); -} - -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>
+#ifndef _MSC_VER
+#define getpid(x) _getpid(x)
+#endif
+#endif
+
+#ifdef _MSC_VER
+#define S_ISREG(m) (((m)&_S_IFMT) == _S_IFREG)
+#endif
+
+#ifdef XF86BIGFONT
+#include "xf86bigfontsrv.h"
+#endif
+
+#ifdef __clang__
+#pragma clang diagnostic ignored "-Wformat-nonliteral"
+#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__ __attribute__((__used__)) = &__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) {
+ if (asprintf(&logFileName, fname, display) == -1)
+ FatalError("Cannot allocate space for the log file name\n");
+
+ if (backup && *backup) {
+ struct stat buf;
+
+ if (!stat(logFileName, &buf) && S_ISREG(buf.st_mode)) {
+ char *suffix;
+ char *oldLog;
+
+ if ((asprintf(&suffix, backup, display) == -1) ||
+ (asprintf(&oldLog, "%s%s", logFileName, suffix) == -1))
+ FatalError("Cannot allocate space for the log file name\n");
+ 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(enum ExitCode error)
+{
+ if (logFile) {
+ ErrorF("Server terminated %s (%d). Closing log file.\n",
+ (error == EXIT_NO_ERROR) ? "successfully" : "with error", error);
+ 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)
+{
+ 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)-1, f, args);
+ tmpBuffer[sizeof(tmpBuffer)-1]=0;
+ 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) {
+ if (len > bufferUnused) {
+ bufferSize += 1024;
+ bufferUnused += 1024;
+ saveBuffer = realloc(saveBuffer, 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(EXIT_ERR_ABORT);
+ 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;
+ 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);
+ strncpy(oldbuf, buf, sizeof(oldbuf));
+ oldlen = len;
+ nrepeat = 0;
+ auditTimer = TimerSet(auditTimer, 0, AUDIT_TIMEOUT, AuditFlush, NULL);
+ }
+ free(prefix);
+}
+
+extern char g_FatalErrorMessage[1024];
+
+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__
+ {
+ va_list args2;
+ va_copy(args2, args);
+ (void)vsnprintf(__crashreporter_info_buff__, sizeof(__crashreporter_info_buff__), f, args2);
+ va_end(args2);
+ }
+#endif
+#ifdef WIN32
+ vsnprintf(g_FatalErrorMessage, 1024, 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(const char *str)
+{
+ const char *err = strerror(errno);
+
+ if (str)
+ LogWrite(-1, "%s: %s", str, err);
+ else
+ LogWrite(-1, "%s", err);
+}
+
+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");
+}
+
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