X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/ff8b29b8c62f377ede40fbf0cbbaa428bd8df60a..8d9dc9f99db13d42272b7c150f2e6849331ccdc1:/log.c

diff --git a/log.c b/log.c
index e047d96f..71eb234d 100644
--- a/log.c
+++ b/log.c
@@ -23,6 +23,31 @@
   */
 #include "rsync.h"
 
+
+void log_open(void)
+{
+	static int initialised;
+	int options = LOG_PID;
+
+	if (initialised) return;
+	initialised = 1;
+
+#ifdef LOG_NDELAY
+	options |= LOG_NDELAY;
+#endif
+
+#ifdef LOG_DAEMON
+	openlog("rsyncd", options, lp_syslog_facility());
+#else
+	openlog("rsyncd", options);
+#endif
+
+#ifndef LOG_NDELAY
+	syslog(LOG_INFO,"rsyncd started\n");
+#endif
+}
+		
+
 /* this is the rsync debugging function. Call it with FINFO or FERROR */
 void rprintf(int fd, const char *format, ...)
 {
@@ -31,33 +56,33 @@ void rprintf(int fd, const char *format, ...)
 	int len;
 	FILE *f=NULL;
 	extern int am_daemon;
-	
-	if (am_daemon) {
-#ifdef LOG_DAEMON
-		openlog("rsyncd", LOG_PID, LOG_DAEMON);
-#else /* for old systems that have no facility codes. */
-		openlog("rsyncd", LOG_PID);
-#endif
-	}
+	/* recursion can happen with certain fatal conditions */
+	static int depth;
 
-	va_start(ap, format);
+	if (depth) return;
 
-#if HAVE_VSNPRINTF
-	len = vsnprintf(buf, sizeof(buf)-1, format, ap);
-#else
-	len = vsprintf(buf, format, ap);
-#endif
+	depth++;
+
+	va_start(ap, format);
+	len = vslprintf(buf, sizeof(buf)-1, format, ap);
 	va_end(ap);
 
 	if (len < 0) exit_cleanup(1);
 
+	if (len > sizeof(buf)-1) exit_cleanup(1);
+
 	buf[len] = 0;
 
 	if (am_daemon) {
 		int priority = LOG_INFO;
 		if (fd == FERROR) priority = LOG_WARNING;
-		
-		syslog(priority, "%s", buf);
+
+		log_open();
+		if (!io_multiplex_write(fd, buf, strlen(buf))) {
+			syslog(priority, "%s", buf);
+		}
+
+		depth--;
 		return;
 	}
 
@@ -76,6 +101,8 @@ void rprintf(int fd, const char *format, ...)
 	if (!f) exit_cleanup(1);
 
 	if (fwrite(buf, len, 1, f) != 1) exit_cleanup(1);
+
+	depth--;
 }
 
 void rflush(int fd)