===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/ssh/log.c,v
retrieving revision 1.59
retrieving revision 1.60
diff -u -r1.59 -r1.60
--- src/usr.bin/ssh/log.c	2021/05/07 04:11:51	1.59
+++ src/usr.bin/ssh/log.c	2021/09/16 15:11:19	1.60
@@ -1,4 +1,4 @@
-/* $OpenBSD: log.c,v 1.59 2021/05/07 04:11:51 djm Exp $ */
+/* $OpenBSD: log.c,v 1.60 2021/09/16 15:11:19 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -311,6 +311,7 @@
 	int pri = LOG_INFO;
 	int saved_errno = errno;
 	log_handler_fn *tmp_handler;
+	const char *progname = argv0 != NULL ? argv0 : __progname;
 
 	if (!force && level > log_level)
 		return;
@@ -367,11 +368,13 @@
 		tmp_handler(level, force, fmtbuf, log_handler_ctx);
 		log_handler = tmp_handler;
 	} else if (log_on_stderr) {
-		snprintf(msgbuf, sizeof msgbuf, "%.*s\r\n",
+		snprintf(msgbuf, sizeof msgbuf, "%s%s%.*s\r\n",
+		    (log_on_stderr > 1) ? progname : "",
+		    (log_on_stderr > 1) ? ": " : "",
 		    (int)sizeof msgbuf - 3, fmtbuf);
 		(void)write(log_stderr_fd, msgbuf, strlen(msgbuf));
 	} else {
-		openlog_r(argv0 ? argv0 : __progname, LOG_PID, log_facility, &sdata);
+		openlog_r(progname, LOG_PID, log_facility, &sdata);
 		syslog_r(pri, &sdata, "%.500s", fmtbuf);
 		closelog_r(&sdata);
 	}