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can-utils
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Fixed checking of CAN interface name commandline parameter. 

Cosmetics.
pull/7/head
Oliver Hartkopp 2007-10-07 14:39:52 +00:00
parent d72681c442
commit 12f9170338
1 changed files with 14 additions and 4 deletions
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18
cansniffer.c
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@ -71,6 +71,7 @@
#define U64_DATA(p) (*(unsigned long long*)(p)->data)
#define SETFNAME "sniffset."
#define ANYDEV "any"
/* flags */
@ -175,6 +176,7 @@ void print_usage(char *prg)
fprintf(stderr, " -t <time> (timeout for ID display [x100ms] default: %d)\n", TIMEOUT);
fprintf(stderr, " -h <time> (hold marker on changes [x100ms] default: %d)\n", HOLD);
fprintf(stderr, " -l <time> (loop time (display) [x100ms] default: %d)\n", LOOP);
fprintf(stderr, "Use interface name '%s' to receive from all can-interfaces\n", ANYDEV);
fprintf(stderr, "\n");
fprintf(stderr, "%s", manual);
}
@ -290,12 +292,20 @@ int main(int argc, char **argv)
}
addr.can_family = AF_CAN;
strcpy(ifr.ifr_name, argv[optind]);
ioctl(s, SIOCGIFINDEX, &ifr);
addr.can_ifindex = ifr.ifr_ifindex;
if (strcmp(ANYDEV, argv[optind])) {
strcpy(ifr.ifr_name, argv[optind]);
if (ioctl(s, SIOCGIFINDEX, &ifr) < 0) {
perror("SIOCGIFINDEX");
exit(1);
}
addr.can_ifindex = ifr.ifr_ifindex;
}
else
addr.can_ifindex = 0; /* any can interface */
if (connect(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
perror("bind");
perror("connect");
return 1;
}