From 150d40d99b54d731ff7bcaf6ee542c14a1228174 Mon Sep 17 00:00:00 2001
From: rgrimes <rgrimes@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Date: Fri, 13 Apr 2018 03:47:41 +0000
Subject: [PATCH] MFC: r332075

Exit with usage when extra arguments are on command line
preventing mistakes such as "halt 0p" for "halt -p".
Approved by:	bde (mentor, implicit), phk (mentor,implicit)
MFC after:	1 week


git-svn-id: svn://svn.freebsd.org/base/stable/10@332465 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
---
 sbin/reboot/reboot.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sbin/reboot/reboot.c b/sbin/reboot/reboot.c
index 51b751513..5b3729956 100644
--- a/sbin/reboot/reboot.c
+++ b/sbin/reboot/reboot.c
@@ -111,6 +111,8 @@ main(int argc, char *argv[])
 		}
 	argc -= optind;
 	argv += optind;
+	if (argc != 0)
+		usage();
 
 	if ((howto & (RB_DUMP | RB_HALT)) == (RB_DUMP | RB_HALT))
 		errx(1, "cannot dump (-d) when halting; must reboot instead");
-- 
2.45.0