ubase

commit 5aede71236bec290b43f09b9bed5d175a76deea0
parent 06dcf39b3a7e736d203167ad97adae79701c576c
Author: sin <sin@2f30.org>
Date:   Mon, 30 Jun 2014 16:35:15 +0100

Use a bitwise-xor to determine incompatible flags

Diffstat:
M
ctrlaltdel.c
 | 
3
+--

1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/ctrlaltdel.c b/ctrlaltdel.c
@@ -30,8 +30,7 @@ main(int argc, char *argv[])
 		usage();
 	} ARGEND;
 
-	if (argc > 0 || (hflag != 0 && sflag != 0) ||
-	    (hflag == 0 && sflag == 0))
+	if (argc > 0 || (hflag ^ sflag) == 0)
 		usage();
 
 	cmd = hflag ? LINUX_REBOOT_CMD_CAD_ON : LINUX_REBOOT_CMD_CAD_OFF;