diff options
Diffstat (limited to 'tools/idevicename.c')
| -rw-r--r-- | tools/idevicename.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/tools/idevicename.c b/tools/idevicename.c index 013becc..ef226f7 100644 --- a/tools/idevicename.c +++ b/tools/idevicename.c @@ -38,7 +38,7 @@ static void print_usage(void) printf("Display the device name or set it to NAME if specified.\n"); printf("\n"); printf(" -d, --debug\t\tenable communication debugging\n"); - printf(" -u, --udid UDID\tuse UDID to target a specific device\n"); + printf(" -u, --udid UDID\ttarget specific device by UDID\n"); printf(" -h, --help\t\tprint usage information\n"); printf("\n"); printf("Homepage: <" PACKAGE_URL ">\n"); @@ -60,6 +60,12 @@ int main(int argc, char** argv) while ((c = getopt_long(argc, argv, "du:h", longopts, &optidx)) != -1) { switch (c) { case 'u': + if (!*optarg) { + fprintf(stderr, "ERROR: UDID must not be empty!\n"); + print_usage(); + exit(2); + } + free(udid); udid = strdup(optarg); break; case 'h': |