From e7c9998b3b2593eb312e9bf3c69d2d06e628d03a Mon Sep 17 00:00:00 2001
From: cheloha <cheloha@openbsd.org>
Date: Wed, 3 Aug 2022 00:23:14 +0000
Subject: [PATCH] dmesg(8): don't accept positional arguments

dmesg(8) doesn't use any positional arguments.  If we see any, it's a
usage error.

ok florian@, "Sure" deraadt@ millert@
---
 sbin/dmesg/dmesg.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sbin/dmesg/dmesg.c b/sbin/dmesg/dmesg.c
index 4d63370e9ab..1b4ef99e5b9 100644
--- a/sbin/dmesg/dmesg.c
+++ b/sbin/dmesg/dmesg.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dmesg.c,v 1.31 2019/12/24 13:20:44 bluhm Exp $	*/
+/*	$OpenBSD: dmesg.c,v 1.32 2022/08/03 00:23:14 cheloha Exp $	*/
 /*	$NetBSD: dmesg.c,v 1.8 1995/03/18 14:54:49 cgd Exp $	*/
 
 /*-
@@ -89,6 +89,9 @@ main(int argc, char *argv[])
 	argc -= optind;
 	argv += optind;
 
+	if (argc != 0)
+		usage();
+
 	if (memf == NULL && nlistf == NULL) {
 		int mib[2], msgbufsize;
 		size_t len;
-- 
2.20.1