2004-11-26 Andrew J. Schorr <ajschorr@alumni.princeton.edu>

	* log.c: (zlog_backtrace) New function to log a backtrace.
	  (zlog_backtrace_safe) Log a backtrace in an async-signal-safe way.
	  Unfortunately, this function does not support syslog logging yet.
	  (zlog_signal) Move backtrace code into separate function
	  zlog_backtrace_safe.
	  (_zlog_assert_failed) Call zlog_backtrace before aborting.
	* log.h: Declare new functions zlog_backtrace and zlog_backtrace_safe.
	* memory.c: (zerror) Call zlog_backtrace before aborting.

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/log.h b/lib/log.h
index 1fd4fe0c7..0df75e733 100644
--- a/lib/log.h
+++ b/lib/log.h
@@ -125,4 +125,13 @@ extern const char *safe_strerror(int errnum);
 /* To be called when a fatal signal is caught. */
 extern void zlog_signal(int signo, const char *action);
 
+/* Log a backtrace. */
+extern void zlog_backtrace(int priority);
+
+/* Log a backtrace, but in an async-signal-safe way.  Should not be
+   called unless the program is about to exit or abort, since it messes
+   up the state of zlog file pointers.  This function needs to be enhanced
+   to support syslog logging. */
+extern void zlog_backtrace_safe(int priority);
+
 #endif /* _ZEBRA_LOG_H */