| Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 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 | |
| 22 | int 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 | |
| 43 | int 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); |
| Josef Bacik | 7e1fea7 | 2010-12-08 12:22:34 -0500 | [diff] [blame] | 59 | if (ret < 0) |
| Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 60 | goto out; |
| Josef Bacik | 7e1fea7 | 2010-12-08 12:22:34 -0500 | [diff] [blame] | 61 | if (ret) { |
| 62 | ret = -ENOENT; |
| 63 | goto out; |
| 64 | } |
| Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 65 | |
| 66 | ret = btrfs_del_item(trans, root, path); |
| 67 | |
| 68 | out: |
| 69 | btrfs_free_path(path); |
| 70 | return ret; |
| 71 | } |
| Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 72 | |
| 73 | int 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 | } |