Better error message for `device' command without arguments.

help & ok miod@

1 files changed, 6 insertions, 1 deletions

diff --git a/usr.bin/cdio/cdio.c b/usr.bin/cdio/cdio.c
index 8a5d986fe26..7e8e46cc9cf 100644
--- a/usr.bin/cdio/cdio.c
+++ b/usr.bin/cdio/cdio.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cdio.c,v 1.37 2005/01/08 21:16:02 alek Exp $	*/
+/*	$OpenBSD: cdio.c,v 1.38 2005/01/09 11:02:32 alek Exp $	*/
 
 /*  Copyright (c) 1995 Serge V. Vakulenko
  * All rights reserved.
@@ -384,6 +384,11 @@ run(int cmd, char *arg)
 			fd = -1;
 		}
 
+		if (strlen(arg) == 0) {
+			printf("%s: Invalid parameter\n", __progname);
+			return (0);
+		}
+
 		/* open new device */
 		if (!open_cd(arg))
 			return (0);