diff options
| author | David Sterba <dsterba@suse.cz> | 2015-06-11 00:04:19 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.cz> | 2015-06-11 00:23:30 +0200 |
| commit | 4647ab887a592516841f74fa47586771bbcad81b (patch) | |
| tree | 7cacc6dd3fd1d6c8322e9866fcf026a0c623a63a /btrfs-debug-tree.c | |
| parent | 250a58f34d57588de8f0b2f118cb5cd152744158 (diff) | |
btrfs-progs: accept --help as option in the standalone utilities
Signed-off-by: David Sterba <dsterba@suse.cz>
Diffstat (limited to 'btrfs-debug-tree.c')
| -rw-r--r-- | btrfs-debug-tree.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/btrfs-debug-tree.c b/btrfs-debug-tree.c index 610624e4..7d8e876f 100644 --- a/btrfs-debug-tree.c +++ b/btrfs-debug-tree.c @@ -20,6 +20,8 @@ #include <stdlib.h> #include <unistd.h> #include <uuid/uuid.h> +#include <getopt.h> + #include "kerncompat.h" #include "radix-tree.h" #include "ctree.h" @@ -28,7 +30,7 @@ #include "transaction.h" #include "utils.h" -static int print_usage(void) +static int print_usage(int ret) { fprintf(stderr, "usage: btrfs-debug-tree [-e] [-d] [-r] [-R] [-u]\n"); fprintf(stderr, " [-b block_num ] device\n"); @@ -43,7 +45,7 @@ static int print_usage(void) fprintf(stderr, "\t-t tree_id : print only the tree with the given id\n"); fprintf(stderr, "%s\n", PACKAGE_STRING); - exit(1); + exit(ret); } static void print_extents(struct btrfs_root *root, struct extent_buffer *eb) @@ -145,7 +147,12 @@ int main(int ac, char **av) while(1) { int c; - c = getopt(ac, av, "deb:rRut:"); + static const struct option long_options[] = { + { "help", no_argument, NULL, GETOPT_VAL_HELP}, + { NULL, 0, NULL, 0 } + }; + + c = getopt_long(ac, av, "deb:rRut:", long_options, NULL); if (c < 0) break; switch(c) { @@ -171,14 +178,15 @@ int main(int ac, char **av) case 't': tree_id = arg_strtou64(optarg); break; + case GETOPT_VAL_HELP: default: - print_usage(); + print_usage(c != GETOPT_VAL_HELP); } } set_argv0(av); ac = ac - optind; if (check_argc_exact(ac, 1)) - print_usage(); + print_usage(1); ret = check_arg_type(av[optind]); if (ret != BTRFS_ARG_BLKDEV && ret != BTRFS_ARG_REG) { |