Btrfs-progs: add a message to know zero log ran successfully

[platform/upstream/btrfs-progs.git] / btrfs-zero-log.c

diff --git a/btrfs-zero-log.c b/btrfs-zero-log.c
index f249aec..4154175 100644 (file)
--- a/btrfs-zero-log.c
+++ b/btrfs-zero-log.c
@@ -32,6 +32,7 @@
 #include "version.h"
 #include "utils.h"
 
+static void print_usage(void) __attribute__((noreturn));
 static void print_usage(void)
 {
        fprintf(stderr, "usage: btrfs-zero-log dev\n");
@@ -45,20 +46,22 @@ int main(int ac, char **av)
        struct btrfs_trans_handle *trans;
        int ret;
 
-       if (ac != 2)
+       set_argv0(av);
+       if (check_argc_exact(ac, 2))
                print_usage();
 
        radix_tree_init();
 
        if((ret = check_mounted(av[1])) < 0) {
                fprintf(stderr, "Could not check mount status: %s\n", strerror(-ret));
-               return ret;
+               goto out;
        } else if(ret) {
                fprintf(stderr, "%s is currently mounted. Aborting.\n", av[1]);
-               return -EBUSY;
+               ret = -EBUSY;
+               goto out;
        }
 
-       root = open_ctree(av[1], 0, 1);
+       root = open_ctree(av[1], 0, OPEN_CTREE_WRITES | OPEN_CTREE_PARTIAL);
 
        if (root == NULL)
                return 1;
@@ -68,5 +71,7 @@ int main(int ac, char **av)
        btrfs_set_super_log_root_level(root->fs_info->super_copy, 0);
        btrfs_commit_transaction(trans, root);
        close_ctree(root);
-       return ret;
+       printf("Log root zero'ed\n");
+out:
+       return !!ret;
 }