From 9e4e17f361ead472018692a463cdf6ddefe8f67e Mon Sep 17 00:00:00 2001 From: Satoru Takeuchi Date: Thu, 2 Jun 2016 17:11:51 +0900 Subject: [PATCH] btrfs-progs: btrfs-crc: print usage on receiving invalid arguments Usage is only printed if -h option is set. However it's nice to do it when wrong option is set or the number of argument is wrong. Signed-off-by: Satoru Takeuchi Signed-off-by: David Sterba --- btrfs-crc.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/btrfs-crc.c b/btrfs-crc.c index e689ed46..9e2a01f6 100644 --- a/btrfs-crc.c +++ b/btrfs-crc.c @@ -22,7 +22,7 @@ #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"); @@ -30,7 +30,7 @@ void print_usage(void) 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); + exit(status); } int main(int argc, char **argv) @@ -57,9 +57,9 @@ int main(int argc, char **argv) seed = atoll(optarg); break; case 'h': - print_usage(); + print_usage(1); case '?': - return 255; + print_usage(255); } } @@ -68,7 +68,7 @@ int main(int argc, char **argv) if (!loop) { if (check_argc_min(argc - optind, 1)) - return 255; + print_usage(255); printf("%12u - %s\n", crc32c(~1, str, strlen(str)), str); return 0;