diff options
Diffstat (limited to 'usr.sbin/diskinfo/diskinfo.c')
| -rw-r--r-- | usr.sbin/diskinfo/diskinfo.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/usr.sbin/diskinfo/diskinfo.c b/usr.sbin/diskinfo/diskinfo.c index 45837f6..5025e51 100644 --- a/usr.sbin/diskinfo/diskinfo.c +++ b/usr.sbin/diskinfo/diskinfo.c @@ -41,7 +41,7 @@ static void usage(void) { - fprintf(stderr, "Usage: diskinfo [-tv]\n"); + fprintf(stderr, "usage: diskinfo [-tv] disk ...\n"); exit (1); } @@ -73,6 +73,9 @@ main(int argc, char **argv) argc -= optind; argv += optind; + if (argc < 1) + usage(); + for (i = 0; i < argc; i++) { fd = open(argv[i], O_RDONLY); if (fd < 0 && errno == ENOENT && *argv[i] != '/') { |
