MFC r314233:

Parameterize out the length of struct filed->f_lasttime as `MAXDATELEN`

This removes the hardcoded value for the field (16) and the equivalent
hardcoded lengths in logmsg(..).

This change is being done to help stage future work to add RFC5424/RFC5434
support to syslogd(8).

Obtained from:	Isilon OneFS (dcd33d13da) (as part of a larger change)

1 files changed, 6 insertions, 4 deletions

diff --git a/usr.sbin/syslogd/syslogd.c b/usr.sbin/syslogd/syslogd.c
index fa51669..490bbc0 100644
--- a/usr.sbin/syslogd/syslogd.c
+++ b/usr.sbin/syslogd/syslogd.c
@@ -68,6 +68,8 @@ __FBSDID("$FreeBSD$");
  * Priority comparison code by Harlan Stenn.
  */
 
+/* Maximum number of characters in time of last occurrence */
+#define	MAXDATELEN	16
 #define	MAXLINE		1024		/* maximum line length */
 #define	MAXSVLINE	MAXLINE		/* maximum saved line length */
 #define	DEFUPRI		(LOG_USER|LOG_NOTICE)
@@ -197,7 +199,7 @@ struct filed {
 		} f_pipe;
 	} f_un;
 	char	f_prevline[MAXSVLINE];		/* last message logged */
-	char	f_lasttime[16];			/* time of last occurrence */
+	char	f_lasttime[MAXDATELEN];		/* time of last occurrence */
 	char	f_prevhost[MAXHOSTNAMELEN];	/* host from which recd. */
 	int	f_prevpri;			/* pri of f_prevline */
 	int	f_prevlen;			/* length of f_prevline */
@@ -974,7 +976,7 @@ logmsg(int pri, const char *msg, const char *from, int flags)
 	 * Check to see if msg looks non-standard.
 	 */
 	msglen = strlen(msg);
-	if (msglen < 16 || msg[3] != ' ' || msg[6] != ' ' ||
+	if (msglen < MAXDATELEN || msg[3] != ' ' || msg[6] != ' ' ||
 	    msg[9] != ':' || msg[12] != ':' || msg[15] != ' ')
 		flags |= ADDDATE;
 
@@ -983,8 +985,8 @@ logmsg(int pri, const char *msg, const char *from, int flags)
 		timestamp = ctime(&now) + 4;
 	} else {
 		timestamp = msg;
-		msg += 16;
-		msglen -= 16;
+		msg += MAXDATELEN;
+		msglen -= MAXDATELEN;
 	}
 
 	/* skip leading blanks */