2 * Copyright (C) 2011 STRATO. All rights reserved.
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.
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.
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.
19 #ifndef __BTRFS_BACKREF__
20 #define __BTRFS_BACKREF__
23 #include "extent_io.h"
25 struct inode_fs_paths
{
26 struct btrfs_path
*btrfs_path
;
27 struct btrfs_root
*fs_root
;
28 struct btrfs_data_container
*fspath
;
31 typedef int (iterate_extent_inodes_t
)(u64 inum
, u64 offset
, u64 root
,
34 int inode_item_info(u64 inum
, u64 ioff
, struct btrfs_root
*fs_root
,
35 struct btrfs_path
*path
);
37 int extent_from_logical(struct btrfs_fs_info
*fs_info
, u64 logical
,
38 struct btrfs_path
*path
, struct btrfs_key
*found_key
,
41 int tree_backref_for_extent(unsigned long *ptr
, struct extent_buffer
*eb
,
42 struct btrfs_key
*key
, struct btrfs_extent_item
*ei
,
43 u32 item_size
, u64
*out_root
, u8
*out_level
);
45 int iterate_extent_inodes(struct btrfs_fs_info
*fs_info
,
46 u64 extent_item_objectid
,
47 u64 extent_offset
, int search_commit_root
,
48 iterate_extent_inodes_t
*iterate
, void *ctx
);
50 int iterate_inodes_from_logical(u64 logical
, struct btrfs_fs_info
*fs_info
,
51 struct btrfs_path
*path
,
52 iterate_extent_inodes_t
*iterate
, void *ctx
);
54 int paths_from_inode(u64 inum
, struct inode_fs_paths
*ipath
);
56 int btrfs_find_all_roots(struct btrfs_trans_handle
*trans
,
57 struct btrfs_fs_info
*fs_info
, u64 bytenr
,
58 u64 time_seq
, struct ulist
**roots
);
59 char *btrfs_ref_to_path(struct btrfs_root
*fs_root
, struct btrfs_path
*path
,
60 u32 name_len
, unsigned long name_off
,
61 struct extent_buffer
*eb_in
, u64 parent
,
62 char *dest
, u32 size
);
64 struct btrfs_data_container
*init_data_container(u32 total_bytes
);
65 struct inode_fs_paths
*init_ipath(s32 total_bytes
, struct btrfs_root
*fs_root
,
66 struct btrfs_path
*path
);
67 void free_ipath(struct inode_fs_paths
*ipath
);
69 int btrfs_find_one_extref(struct btrfs_root
*root
, u64 inode_objectid
,
70 u64 start_off
, struct btrfs_path
*path
,
71 struct btrfs_inode_extref
**ret_extref
,