libbtrfsutil: use local mkfs.btrfs for tests if it exists

[platform/upstream/btrfs-progs.git] / mkfs / main.c

diff --git a/mkfs/main.c b/mkfs/main.c
index 5a717f7..b65b18d 100644 (file)
--- a/mkfs/main.c
+++ b/mkfs/main.c
@@ -315,6 +315,7 @@ static int create_tree(struct btrfs_trans_handle *trans,
        struct btrfs_key location;
        struct btrfs_root_item root_item;
        struct extent_buffer *tmp;
+       u8 uuid[BTRFS_UUID_SIZE] = {0};
        int ret;
 
        ret = btrfs_copy_root(trans, root, root->node, &tmp, objectid);
@@ -325,6 +326,10 @@ static int create_tree(struct btrfs_trans_handle *trans,
        btrfs_set_root_bytenr(&root_item, tmp->start);
        btrfs_set_root_level(&root_item, btrfs_header_level(tmp));
        btrfs_set_root_generation(&root_item, trans->transid);
+       /* clear uuid and o/ctime of source tree */
+       memcpy(root_item.uuid, uuid, BTRFS_UUID_SIZE);
+       btrfs_set_stack_timespec_sec(&root_item.otime, 0);
+       btrfs_set_stack_timespec_sec(&root_item.ctime, 0);
        free_extent_buffer(tmp);
 
        location.objectid = objectid;
@@ -1203,6 +1208,11 @@ raid_groups:
                goto out;
        }
 
+       ret = create_tree(trans, root, BTRFS_UUID_TREE_OBJECTID);
+       if (ret)
+               warning(
+       "unable to create uuid tree, will be created after mount: %d", ret);
+
        ret = btrfs_commit_transaction(trans, root);
        if (ret) {
                error("unable to commit transaction: %d", ret);