Backport a bugfix from glibc-2.2.5 to glibc-2.2.2 for the following problem:
  When syslog-ng is restarted (or HUPed), vixie-cron (and probably other
  programs) stop logging to syslog.


2001-08-27 Ulrich Drepper <Drepper@redhat.com> * misc/syslog.c (vsyslog):
  Try a bit harder to use syslogd.  If the connection went down after we
  first used it try to connect again and resend the message before printing
  to the console.

http://sourceware.org/cgi-bin/cvsweb.cgi/libc/misc/Attic/syslog.c.diff?r1=1.32&r2=1.30&cvsroot=glibc
[ paths adjusted ]

===================================================================
RCS file: /cvs/glibc/libc/misc/Attic/syslog.c,v
retrieving revision 1.30
retrieving revision 1.32
diff -u -r1.30 -r1.32
--- glibc-2.2.2/misc/syslog.c	2001/08/24 03:21:14	1.30
+++ glibc-2.2.5/misc/syslog.c	2001/08/30 23:13:49	1.32
@@ -239,17 +239,29 @@
 
 	if (!connected || __send(LogFile, buf, bufsize, 0) < 0)
 	  {
-	    closelog_internal ();	/* attempt re-open next time */
-	    /*
-	     * Output the message to the console; don't worry about blocking,
-	     * if console blocks everything will.  Make sure the error reported
-	     * is the one from the syslogd failure.
-	     */
-	    if (LogStat & LOG_CONS &&
-		(fd = __open(_PATH_CONSOLE, O_WRONLY|O_NOCTTY, 0)) >= 0)
+	    if (connected)
 	      {
-		dprintf (fd, "%s\r\n", buf + msgoff);
-		(void)__close(fd);
+		/* Try to reopen the syslog connection.  Maybe it went
+		   down.  */
+		closelog_internal ();
+		openlog_internal(LogTag, LogStat | LOG_NDELAY, 0);
+	      }
+
+	    if (!connected || __send(LogFile, buf, bufsize, 0) < 0)
+	      {
+		closelog_internal ();	/* attempt re-open next time */
+		/*
+		 * Output the message to the console; don't worry
+		 * about blocking, if console blocks everything will.
+		 * Make sure the error reported is the one from the
+		 * syslogd failure.
+		 */
+		if (LogStat & LOG_CONS &&
+		    (fd = __open(_PATH_CONSOLE, O_WRONLY|O_NOCTTY, 0)) >= 0)
+		  {
+		    dprintf (fd, "%s\r\n", buf + msgoff);
+		    (void)__close(fd);
+		  }
 	      }
 	  }