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Diffstat (limited to 'tdm/backend/error.c')
-rw-r--r-- | tdm/backend/error.c | 130 |
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 <ossi@kde.org> + +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 ); + } + } +} + |