Part 2 of prior commit

1 files changed, 130 insertions, 0 deletions

diff --git a/tdm/backend/error.c b/tdm/backend/error.c
new file mode 100644
index 000000000..93ec40e70
--- /dev/null
+++ b/tdm/backend/error.c
@@ -0,0 +1,130 @@
+/*
+
+Copyright 1988, 1998  The Open Group
+Copyright 2000-2004 Oswald Buddenhagen <[email protected]>
+
+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 COPYRIGHT HOLDERS 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 a copyright holder 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.
+
+*/
+
+/*
+ * xdm - display manager daemon
+ * Author: Keith Packard, MIT X Consortium
+ *
+ * Log display manager errors to a file as
+ * we generally do not have a terminal to talk to
+ * or use syslog if it exists
+ */
+
+#include "dm.h"
+#include "dm_error.h"
+
+#include <unistd.h>
+#include <stdio.h>
+
+#define PRINT_QUOTES
+#define PRINT_ARRAYS
+#define LOG_DEBUG_MASK DEBUG_CORE
+#define LOG_PANIC_EXIT 1
+#define NEED_ASPRINTF
+#define STATIC
+#include "printf.c"
+
+void
+GDebug( const char *fmt, ... )
+{
+	va_list args;
+
+	if (debugLevel & DEBUG_HLPCON) {
+		va_start( args, fmt );
+		Logger( DM_DEBUG, fmt, args );
+		va_end( args );
+	}
+}
+
+void
+Panic( const char *mesg )
+{
+	int fd = open( "/dev/console", O_WRONLY );
+	write( fd, "xdm panic: ", 11 );
+	write( fd, mesg, strlen( mesg ) );
+	write( fd, "\n", 1 );
+#ifdef USE_SYSLOG
+	ReInitErrorLog();
+	syslog( LOG_ALERT, "%s", mesg );
+#endif
+	exit( 1 );
+}
+
+#ifdef USE_SYSLOG
+void
+ReInitErrorLog()
+{
+	if (!(debugLevel & DEBUG_NOSYSLOG))
+		InitLog();
+}
+#endif
+
+void
+InitErrorLog( const char *errorLogFile )
+{
+	int fd;
+	char buf[128];
+
+#ifdef USE_SYSLOG
+	ReInitErrorLog();
+#endif
+	/* We do this independently of using syslog, as we cannot redirect
+	 * the output of external programs to syslog.
+	 */
+	if (!errorLogFile || strcmp( errorLogFile, "-" )) {
+		if (!errorLogFile) {
+			sprintf( buf, "/var/log/%s.log", prog );
+			errorLogFile = buf;
+		}
+		if ((fd = open( errorLogFile, O_CREAT | O_APPEND | O_WRONLY, 0666 )) < 0)
+			LogError( "Cannot open log file %s\n", errorLogFile );
+		else {
+#ifdef USE_SYSLOG
+# ifdef USE_PAM
+#  define PAMLOG " PAM logs messages related to authentication to authpriv.*."
+# else
+#  define PAMLOG
+# endif
+# define WARNMSG \
+  "********************************************************************************\n" \
+  "Note that your system uses syslog. All of tdm's internally generated messages\n" \
+  "(i.e., not from libraries and external programs/scripts it uses) go to the\n" \
+  "daemon.* syslog facility; check your syslog configuration to find out to which\n" \
+  "file(s) it is logged." PAMLOG "\n" \
+  "********************************************************************************\n\n"
+			if (!lseek( fd, 0, SEEK_END ))
+				write( fd, WARNMSG, sizeof(WARNMSG) - 1 );
+#endif
+			dup2( fd, 1 );
+			close( fd );
+			dup2( 1, 2 );
+		}
+	}
+}
+