blob: 57ea2e959e4dcfaba89e4ee0b833f5744c3639d3 [file] [log] [blame]
Jan Schmidta542ad12011-06-13 19:52:59 +02001/*
2 * Copyright (C) 2011 STRATO. 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#ifndef __BTRFS_BACKREF__
20#define __BTRFS_BACKREF__
21
22#include "ioctl.h"
Jan Schmidt8da6d582011-11-23 18:55:04 +010023#include "ulist.h"
Jan Schmidta542ad12011-06-13 19:52:59 +020024
Jan Schmidt7a3ae2f2012-03-23 17:32:28 +010025#define BTRFS_BACKREF_SEARCH_COMMIT_ROOT ((struct btrfs_trans_handle *)0)
26
Jan Schmidta542ad12011-06-13 19:52:59 +020027struct inode_fs_paths {
28 struct btrfs_path *btrfs_path;
29 struct btrfs_root *fs_root;
30 struct btrfs_data_container *fspath;
31};
32
33typedef int (iterate_extent_inodes_t)(u64 inum, u64 offset, u64 root,
34 void *ctx);
35typedef int (iterate_irefs_t)(u64 parent, struct btrfs_inode_ref *iref,
36 struct extent_buffer *eb, void *ctx);
37
38int inode_item_info(u64 inum, u64 ioff, struct btrfs_root *fs_root,
39 struct btrfs_path *path);
40
41int extent_from_logical(struct btrfs_fs_info *fs_info, u64 logical,
42 struct btrfs_path *path, struct btrfs_key *found_key);
43
44int tree_backref_for_extent(unsigned long *ptr, struct extent_buffer *eb,
45 struct btrfs_extent_item *ei, u32 item_size,
46 u64 *out_root, u8 *out_level);
47
48int iterate_extent_inodes(struct btrfs_fs_info *fs_info,
Jan Schmidta542ad12011-06-13 19:52:59 +020049 u64 extent_item_objectid,
Jan Schmidt7a3ae2f2012-03-23 17:32:28 +010050 u64 extent_offset, int search_commit_root,
Jan Schmidta542ad12011-06-13 19:52:59 +020051 iterate_extent_inodes_t *iterate, void *ctx);
52
53int iterate_inodes_from_logical(u64 logical, struct btrfs_fs_info *fs_info,
54 struct btrfs_path *path,
55 iterate_extent_inodes_t *iterate, void *ctx);
56
57int paths_from_inode(u64 inum, struct inode_fs_paths *ipath);
58
Jan Schmidt8da6d582011-11-23 18:55:04 +010059int btrfs_find_all_roots(struct btrfs_trans_handle *trans,
60 struct btrfs_fs_info *fs_info, u64 bytenr,
61 u64 num_bytes, u64 seq, struct ulist **roots);
62
Jan Schmidta542ad12011-06-13 19:52:59 +020063struct btrfs_data_container *init_data_container(u32 total_bytes);
64struct inode_fs_paths *init_ipath(s32 total_bytes, struct btrfs_root *fs_root,
65 struct btrfs_path *path);
66void free_ipath(struct inode_fs_paths *ipath);
67
68#endif