1/*
 2 * Copyright (C) 2008 Red Hat.  All rights reserved.
 3 *
 4 * This program is free software; you can redistribute it and/or
 5 * modify it under the terms of the GNU General Public
 6 * License v2 as published by the Free Software Foundation.
 7 *
 8 * This program is distributed in the hope that it will be useful,
 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
11 * General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
17 */
18
19#include "ctree.h"
20#include "disk-io.h"
21
22int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans,
23			     struct btrfs_root *root, u64 offset)
24{
25	struct btrfs_path *path;
26	struct btrfs_key key;
27	int ret = 0;
28
29	key.objectid = BTRFS_ORPHAN_OBJECTID;
30	btrfs_set_key_type(&key, BTRFS_ORPHAN_ITEM_KEY);
31	key.offset = offset;
32
33	path = btrfs_alloc_path();
34	if (!path)
35		return -ENOMEM;
36
37	ret = btrfs_insert_empty_item(trans, root, path, &key, 0);
38
39	btrfs_free_path(path);
40	return ret;
41}
42
43int btrfs_del_orphan_item(struct btrfs_trans_handle *trans,
44			  struct btrfs_root *root, u64 offset)
45{
46	struct btrfs_path *path;
47	struct btrfs_key key;
48	int ret = 0;
49
50	key.objectid = BTRFS_ORPHAN_OBJECTID;
51	btrfs_set_key_type(&key, BTRFS_ORPHAN_ITEM_KEY);
52	key.offset = offset;
53
54	path = btrfs_alloc_path();
55	if (!path)
56		return -ENOMEM;
57
58	ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
59	if (ret < 0)
60		goto out;
61	if (ret) { /* JDM: Really? */
62		ret = -ENOENT;
63		goto out;
64	}
65
66	ret = btrfs_del_item(trans, root, path);
67
68out:
69	btrfs_free_path(path);
70	return ret;
71}
72
73int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset)
74{
75	struct btrfs_path *path;
76	struct btrfs_key key;
77	int ret;
78
79	key.objectid = BTRFS_ORPHAN_OBJECTID;
80	key.type = BTRFS_ORPHAN_ITEM_KEY;
81	key.offset = offset;
82
83	path = btrfs_alloc_path();
84	if (!path)
85		return -ENOMEM;
86
87	ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
88
89	btrfs_free_path(path);
90	return ret;
91}

 1/*
 2 * Copyright (C) 2008 Red Hat.  All rights reserved.
 3 *
 4 * This program is free software; you can redistribute it and/or
 5 * modify it under the terms of the GNU General Public
 6 * License v2 as published by the Free Software Foundation.
 7 *
 8 * This program is distributed in the hope that it will be useful,
 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
11 * General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
17 */
18
19#include "ctree.h"
20#include "disk-io.h"
21
22int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans,
23			     struct btrfs_root *root, u64 offset)
24{
25	struct btrfs_path *path;
26	struct btrfs_key key;
27	int ret = 0;
28
29	key.objectid = BTRFS_ORPHAN_OBJECTID;
30	key.type = BTRFS_ORPHAN_ITEM_KEY;
31	key.offset = offset;
32
33	path = btrfs_alloc_path();
34	if (!path)
35		return -ENOMEM;
36
37	ret = btrfs_insert_empty_item(trans, root, path, &key, 0);
38
39	btrfs_free_path(path);
40	return ret;
41}
42
43int btrfs_del_orphan_item(struct btrfs_trans_handle *trans,
44			  struct btrfs_root *root, u64 offset)
45{
46	struct btrfs_path *path;
47	struct btrfs_key key;
48	int ret = 0;
49
50	key.objectid = BTRFS_ORPHAN_OBJECTID;
51	key.type = BTRFS_ORPHAN_ITEM_KEY;
52	key.offset = offset;
53
54	path = btrfs_alloc_path();
55	if (!path)
56		return -ENOMEM;
57
58	ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
59	if (ret < 0)
60		goto out;
61	if (ret) { /* JDM: Really? */
62		ret = -ENOENT;
63		goto out;
64	}
65
66	ret = btrfs_del_item(trans, root, path);
67
68out:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
69	btrfs_free_path(path);
70	return ret;
71}