---
 sysklogd.8 |   23 +++++++++++++++++++++++
 syslogd.c  |   54 ++++++++++++++++++++++++++++++++++++++----------------
 2 files changed, 61 insertions(+), 16 deletions(-)

--- sysklogd.8
+++ sysklogd.8	2022-10-14 13:33:28.961599858 +0000
@@ -31,6 +31,7 @@ sysklogd \- Linux system logging utiliti
 ]
 .RB [ " \-t " ]
 .RB [ " \-v " ]
+.RB [ " \-S " ]
 .SH DESCRIPTION
 .B Sysklogd
 provides two system utilities which provide support for
@@ -158,6 +159,28 @@ loghost.
 .TP
 .B "\-v"
 Print version and exit.
+.TP
+.B "\-S"
+Insert a special code before the hostname in each message to indicate the
+message's priority and facility. Having the priority and facility encoded in
+each message allows a log analyzer program to monitor a single file
+containing all logged messages. The analyzer program can parse the
+priority/facility code for each logged message to determine if it is
+of interest.
+
+The priority/facility code takes the form of a priority number
+followed by a letter that indicates the facility. The priority number
+can range from 0 to 7. The  facility letter can range from 'A' to 'Y',
+where 'A' corresponds to facility number zero (LOG_KERN), 'B'
+corresponds to facility 1 (LOG_USER), etc.
+See /usr/include/sys/syslog.h for a list of priority and LOG_xxx codes.
+
+Example:
+
+      Jun 27 19:22:20 5Q:silence test[1966]: testing
+
+The above message contains a priority/facility code of '5Q', which breaks
+down to a priority of 5 (LOG_NOTICE) and a facility of 16 (LOG_LOCAL0).
 .SH SIGNALS
 .B Syslogd
 reacts to a set of signals.  You may easily send a signal to
--- syslogd.c
+++ syslogd.c	2022-10-14 13:27:33.395957312 +0000
@@ -649,6 +649,9 @@ int funix[MAXFUNIX] = { -1, };
 #define SYNC_FILE	0x002	/* do fsync on file after printing */
 #define ADDDATE		0x004	/* add a date to the message */
 #define MARK		0x008	/* this message is a mark */
+#define SHOWPRI		0x010	/* Will craft priFac before hostname */
+
+int showpri = 0;		/* Are we showing priority in message ? Default: no */
 
 /*
  * This table contains plain text for h_errno errors used by the
@@ -828,7 +831,7 @@ void printchopped(const char *hname, cha
 void printline(const char *hname, char *msg);
 void printsys(char *msg);
 void logmsg(int pri, char *msg, const char *from, int flags);
-void fprintlog(register struct filed *f, char *from, int flags, char *msg);
+void fprintlog(register struct filed *f, char *from, int flags, char *msg, ...);
 void endtty();
 void wallmsg(register struct filed *f, struct iovec *iov);
 void reapchild();
@@ -920,7 +923,7 @@ int main(argc, argv)
 		funix[i]  = -1;
 	}
 
-	while ((ch = getopt(argc, argv, "a:dhf:l:m:np:rs:tv")) != EOF)
+	while ((ch = getopt(argc, argv, "a:dhf:l:m:np:rs:tvS")) != EOF)
 		switch((char)ch) {
 		case 'a':
 			if (nfunix < MAXFUNIX)
@@ -972,6 +975,9 @@ int main(argc, argv)
 		case 'v':
 			printf("syslogd %s.%s\n", VERSION, PATCHLEVEL);
 			exit (0);
+		case 'S':
+			showpri++;
+			break;
 		case '?':
 		default:
 			usage();
@@ -1287,7 +1293,7 @@ int main(argc, argv)
 
 int usage()
 {
-	fprintf(stderr, "usage: syslogd [-drvh] [-l hostlist] [-m markinterval] [-n] [-p path]\n" \
+	fprintf(stderr, "usage: syslogd [-drvSh] [-l hostlist] [-m markinterval] [-n] [-p path]\n" \
 		" [-s domainlist] [-f conffile]\n");
 	exit(1);
 }
@@ -1755,7 +1761,7 @@ void logmsg(pri, msg, from, flags)
 
 		if (f->f_file >= 0) {
 			untty();
-			fprintlog(f, (char *)from, flags, msg);
+			fprintlog(f, (char *)from, flags|SHOWPRI, msg, prilev, fac);
 			(void) close(f->f_file);
 			f->f_file = -1;
 		}
@@ -1805,13 +1811,13 @@ void logmsg(pri, msg, from, flags)
 			 * in the future.
 			 */
 			if (now > REPEATTIME(f)) {
-				fprintlog(f, (char *)from, flags, (char *)NULL);
+				fprintlog(f, (char *)from, flags|SHOWPRI, (char *)NULL, prilev, fac);
 				BACKOFF(f);
 			}
 		} else {
 			/* new line, save it */
 			if (f->f_prevcount)
-				fprintlog(f, (char *)from, 0, (char *)NULL);
+				fprintlog(f, (char *)from, 0|SHOWPRI, (char *)NULL, prilev, fac);
 			f->f_prevpri = pri;
 			f->f_repeatcount = 0;
 			(void) strncpy(f->f_lasttime, timestamp, 15);
@@ -1820,11 +1826,11 @@ void logmsg(pri, msg, from, flags)
 			if (msglen < MAXSVLINE) {
 				f->f_prevlen = msglen;
 				(void) strcpy(f->f_prevline, msg);
-				fprintlog(f, (char *)from, flags, (char *)NULL);
+				fprintlog(f, (char *)from, flags|SHOWPRI, (char *)NULL, prilev, fac);
 			} else {
 				f->f_prevline[0] = 0;
 				f->f_prevlen = 0;
-				fprintlog(f, (char *)from, flags, msg);
+				fprintlog(f, (char *)from, flags|SHOWPRI, msg, prilev, fac);
 			}
 		}
 	}
@@ -1840,11 +1846,7 @@ void logmsg(pri, msg, from, flags)
 } /* balance parentheses for emacs */
 #endif
 
-void fprintlog(f, from, flags, msg)
-	register struct filed *f;
-	char *from;
-	int flags;
-	char *msg;
+void fprintlog(register struct filed *f, char *from, int flags,char *msg, ...)
 {
 	struct iovec iov[6];
 	register struct iovec *v = iov;
@@ -1865,9 +1867,29 @@ void fprintlog(f, from, flags, msg)
 	v->iov_base = f->f_lasttime;
 	v->iov_len = 15;
 	v++;
-	v->iov_base = " ";
-	v->iov_len = 1;
-	v++;
+
+	if(showpri && (flags & SHOWPRI) ) {
+		va_list ap;
+		int prilev;
+		int fac;
+		char prilev_char[5];
+		const char fac_string[LOG_NFACILITIES+1]="ABCDEFGHIJKLMNOPQRSTUVWXY";
+
+		va_start(ap,msg);
+		prilev=va_arg(ap,int);
+		fac=va_arg(ap,int);
+		va_end(ap);
+		sprintf(prilev_char, " %1d%c:", prilev, fac_string[fac]);
+		v->iov_base = prilev_char;
+		v->iov_len = 4;
+		v++;
+	}
+	else {
+		v->iov_base = " ";
+		v->iov_len = 1;
+		v++;
+	}
+
 	v->iov_base = f->f_prevhost;
 	v->iov_len = strlen(v->iov_base);
 	v++;