can-utils: AOSP build clean up

[sojka/can-utils.git] / isotpsniffer.c

diff --git a/isotpsniffer.c b/isotpsniffer.c
index 41fa438f9b73b9ae6e559e098497b00b6933bc09..84d39a2a9d46695b0eacb7b9307afb656f48b2f8 100644 (file)
--- 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) {