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btrfs-progs: find-root: use the common help infrastructure 

Set up the structures so the usage helpers can be used instead of local
functions.

Signed-off-by: David Sterba <dsterba@suse.com>
master
David Sterba 2019-03-04 16:28:17 +01:00
parent 32ec525fd2
commit 50750ead22
1 changed files with 13 additions and 9 deletions
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22
btrfs-find-root.c
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@ -36,12 +36,7 @@
#include "extent-cache.h"
#include "find-root.h"
#include "help.h"
static void find_root_usage(void)
{
fprintf(stderr, "Usage: find-roots [-a] [-o search_objectid] "
"[ -g search_generation ] [ -l search_level ] <device>\n");
}
#include "commands.h"
/*
* Get reliable generation and level for given root.
@ -143,9 +138,18 @@ static void print_find_root_result(struct cache_tree *result,
}
}
/* Stub usage for the common helpers */
static const char * btrfs_find_root_usage[] = {
"btrfs-find-usage",
"btrfs-find-usage [options] <device>",
"Attempt to find tree roots on the device",
"",
" -a search through all metadata even if the root has been found",
" -o OBJECTID filter by the tree's object id",
" -l LEVEL filter by tree level, (default: 0)",
" -g GENERATION filter by tree generation",
};
static const struct cmd_struct btrfs_find_root_cmd = {
"btrfs-find-root", NULL, btrfs_find_root_usage, NULL, 0,
};
int main(int argc, char **argv)
@ -185,7 +189,7 @@ int main(int argc, char **argv)
filter.level = arg_strtou64(optarg);
break;
case GETOPT_VAL_HELP:
find_root_usage();
usage_command(&btrfs_find_root_cmd, 0, 0);
return 0;
default:
usage_unknown_option(btrfs_find_root_usage, argv);