btrfs-progs: btrfs-crc: make argc check more strict

Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/btrfs-crc.c b/btrfs-crc.c
index 27244d7..c3e4774 100644 (file)
--- a/btrfs-crc.c
+++ b/btrfs-crc.c
@@ -69,12 +69,14 @@ int main(int argc, char **argv)
        str = argv[optind];
 
        if (!loop) {
-               if (check_argc_min(argc - optind, 1))
+               if (check_argc_exact(argc - optind, 1))
                        print_usage(255);
 
                printf("%12u - %s\n", crc32c(~1, str, strlen(str)), str);
                return 0;
        }
+       if (check_argc_exact(argc - optind, 0))
+               print_usage(255);
 
        buf = malloc(length);
        if (!buf)