X-Git-Url: http://rtime.felk.cvut.cz/gitweb/sojka/can-utils.git/blobdiff_plain/4e41082935b288fcdeb752169234f825c9cad339..HEAD:/isotpsniffer.c

diff --git a/isotpsniffer.c b/isotpsniffer.c
index 41fa438..84d39a2 100644
--- a/isotpsniffer.c
+++ b/isotpsniffer.c
@@ -1,7 +1,3 @@
-/*
- *  $Id$
- */
-
 /*
  * isotpsniffer.c - dump ISO15765-2 datagrams using PF_CAN isotp protocol 
  *
@@ -41,7 +37,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  * DAMAGE.
  *
- * Send feedback to <socketcan-users@lists.berlios.de>
+ * Send feedback to <linux-can@vger.kernel.org>
  *
  */
 
@@ -193,7 +189,7 @@ int main(int argc, char **argv)
 	unsigned char buffer[4096];
 	int nbytes;
 
-	while ((opt = getopt(argc, argv, "s:d:x:h:ct:f:")) != -1) {
+	while ((opt = getopt(argc, argv, "s:d:x:h:ct:f:?")) != -1) {
 		switch (opt) {
 		case 's':
 			src = strtoul(optarg, (char **)NULL, 16);
@@ -234,17 +230,22 @@ int main(int argc, char **argv)
 			}
 			break;
 
+		case '?':
+			print_usage(basename(argv[0]));
+			exit(0);
+			break;
+
 		default:
 			fprintf(stderr, "Unknown option %c\n", opt);
 			print_usage(basename(argv[0]));
-			exit(0);
+			exit(1);
 			break;
 		}
 	}
 
 	if ((argc - optind) != 1 || src == NO_CAN_ID || dst == NO_CAN_ID) {
 		print_usage(basename(argv[0]));
-		exit(0);
+		exit(1);
 	}
   
 	if ((s = socket(PF_CAN, SOCK_DGRAM, CAN_ISOTP)) < 0) {