log reason when not synced; ok henning@

src/usr.sbin/ntpd/client.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: client.c,v 1.81 2008/06/10 03:51:53 naddy Exp $ */
+/*	$OpenBSD: client.c,v 1.82 2009/03/04 18:46:44 stevesk Exp $ */
 
 /*
  * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
@@ -20,6 +20,7 @@
 #include <sys/param.h>
 #include <errno.h>
 #include <md5.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
@@ -218,10 +219,25 @@ client_dispatch(struct ntp_peer *p, u_int8_t settime)
 
 	if ((msg.status & LI_ALARM) == LI_ALARM || msg.stratum == 0 ||
 	    msg.stratum > NTP_MAXSTRATUM) {
+		char s[16];
+
+		if ((msg.status & LI_ALARM) == LI_ALARM) {
+			strlcpy(s, "alarm", sizeof(s));
+		} else if (msg.stratum == 0) {
+			/* Kiss-o'-Death (KoD) packet */
+			if (msg.refid != 0)
+				snprintf(s, sizeof(s), "KoD %.4s",
+				    (char *)&msg.refid);
+			else
+				strlcpy(s, "KoD", sizeof(s));
+		} else if (msg.stratum > NTP_MAXSTRATUM) {
+			snprintf(s, sizeof(s), "stratum %d", msg.stratum);
+		}
 		interval = error_interval();
 		set_next(p, interval);
-		log_info("reply from %s: not synced, next query %ds",
-		    log_sockaddr((struct sockaddr *)&p->addr->ss), interval);
+		log_info("reply from %s: not synced (%s), next query %ds",
+		    log_sockaddr((struct sockaddr *)&p->addr->ss), s,
+			interval);
 		return (0);
 	}