orphan.c

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * Copyright (C) 2008 Red Hat.  All rights reserved.
 4 */
 5
 6#include "ctree.h"
 7#include "orphan.h"
 8
 9int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans,
10			     struct btrfs_root *root, u64 offset)
11{
12	BTRFS_PATH_AUTO_FREE(path);
13	struct btrfs_key key;
14
15	key.objectid = BTRFS_ORPHAN_OBJECTID;
16	key.type = BTRFS_ORPHAN_ITEM_KEY;
17	key.offset = offset;
18
19	path = btrfs_alloc_path();
20	if (!path)
21		return -ENOMEM;
22
23	return btrfs_insert_empty_item(trans, root, path, &key, 0);
24}
25
26int btrfs_del_orphan_item(struct btrfs_trans_handle *trans,
27			  struct btrfs_root *root, u64 offset)
28{
29	BTRFS_PATH_AUTO_FREE(path);
30	struct btrfs_key key;
31	int ret = 0;
32
33	key.objectid = BTRFS_ORPHAN_OBJECTID;
34	key.type = BTRFS_ORPHAN_ITEM_KEY;
35	key.offset = offset;
36
37	path = btrfs_alloc_path();
38	if (!path)
39		return -ENOMEM;
40
41	ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
42	if (ret < 0)
43		return ret;
44	if (ret)
45		return -ENOENT;
46
47	return btrfs_del_item(trans, root, path);
48}