X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=btrfs-crc.c;h=c3e4774766b7ab5937a3812766ed86d845487ebc;hb=905b3d18ae118931839b0a1ece17870073b51484;hp=e689ed46432398df4d95a5e064e4333e8ecef34d;hpb=af4fe0551fe99a648921ed16ba49d4fb2aaa9b25;p=platform%2Fupstream%2Fbtrfs-progs.git

diff --git a/btrfs-crc.c b/btrfs-crc.c
index e689ed4..c3e4774 100644
--- a/btrfs-crc.c
+++ b/btrfs-crc.c
@@ -22,15 +22,17 @@
 #include "crc32c.h"
 #include "utils.h"
 
-void print_usage(void)
+void print_usage(int status)
 {
 	printf("usage: btrfs-crc filename\n");
 	printf("    print out the btrfs crc for \"filename\"\n");
-	printf("usage: btrfs-crc filename -c crc [-s seed] [-l length]\n");
+	printf("usage: btrfs-crc -c crc [-s seed] [-l length]\n");
 	printf("    brute force search for file names with the given crc\n");
 	printf("      -s seed    the random seed (default: random)\n");
 	printf("      -l length  the length of the file names (default: 10)\n");
-	exit(1);
+	printf("usage: btrfs-crc -h\n");
+	printf("    print this message\n");
+	exit(status);
 }
 
 int main(int argc, char **argv)
@@ -57,9 +59,9 @@ int main(int argc, char **argv)
 			seed = atoll(optarg);
 			break;
 		case 'h':
-			print_usage();
+			print_usage(1);
 		case '?':
-			return 255;
+			print_usage(255);
 		}
 	}
 
@@ -67,12 +69,14 @@ int main(int argc, char **argv)
 	str = argv[optind];
 
 	if (!loop) {
-		if (check_argc_min(argc - optind, 1))
-			return 255;
+		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)