Consistently use defined exit codes.

Tools have been inconsistently using exit codes when started with
--help/--version.
With this patch all tools use exit codes E_USAGE/E_VERSION defined
in net-support.h.

There's probably no rule what exit codes should programs use when
started with --help/--version, but when I'm checking programs on
my system most of them use 0 (SUCCESS) exit code.
Therefore I redefined E_USAGE/E_VERSION to EXIT_SUCCESS (0).

1 files changed, 2 insertions, 1 deletions

diff --git a/nameif.c b/nameif.c
index c77c4fe..61bf85f 100644
--- a/nameif.c
+++ b/nameif.c
@@ -22,6 +22,7 @@
 #include <linux/sockios.h>
 #include <errno.h>
 #include "intl.h" 
+#include "net-support.h"
 
 const char default_conf[] = "/etc/mactab"; 
 const char *fname = default_conf; 
@@ -200,7 +201,7 @@ struct option lopt[] = {
 void usage(void)
 {
 	fprintf(stderr, _("usage: nameif [-c configurationfile] [-s] {ifname macaddress}\n")); 
-	exit(1); 
+	exit(E_USAGE);
 }
 
 int main(int ac, char **av)