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__
22 #include <linux/btrfs.h>
24 #include "extent_io.h"
26 struct inode_fs_paths
{
27 struct btrfs_path
*btrfs_path
;
28 struct btrfs_root
*fs_root
;
29 struct btrfs_data_container
*fspath
;
32 typedef int (iterate_extent_inodes_t
)(u64 inum
, u64 offset
, u64 root
,
35 int inode_item_info(u64 inum
, u64 ioff
, struct btrfs_root
*fs_root
,
36 struct btrfs_path
*path
);
38 int extent_from_logical(struct btrfs_fs_info
*fs_info
, u64 logical
,
39 struct btrfs_path
*path
, struct btrfs_key
*found_key
,
42 int tree_backref_for_extent(unsigned long *ptr
, struct extent_buffer
*eb
,
43 struct btrfs_extent_item
*ei
, u32 item_size
,
44 u64
*out_root
, u8
*out_level
);
46 int iterate_extent_inodes(struct btrfs_fs_info
*fs_info
,
47 u64 extent_item_objectid
,
48 u64 extent_offset
, int search_commit_root
,
49 iterate_extent_inodes_t
*iterate
, void *ctx
);
51 int iterate_inodes_from_logical(u64 logical
, struct btrfs_fs_info
*fs_info
,
52 struct btrfs_path
*path
,
53 iterate_extent_inodes_t
*iterate
, void *ctx
);
55 int paths_from_inode(u64 inum
, struct inode_fs_paths
*ipath
);
57 int btrfs_find_all_roots(struct btrfs_trans_handle
*trans
,
58 struct btrfs_fs_info
*fs_info
, u64 bytenr
,
59 u64 time_seq
, struct ulist
**roots
);
60 char *btrfs_ref_to_path(struct btrfs_root
*fs_root
, struct btrfs_path
*path
,
61 u32 name_len
, unsigned long name_off
,
62 struct extent_buffer
*eb_in
, u64 parent
,
63 char *dest
, u32 size
);
65 struct btrfs_data_container
*init_data_container(u32 total_bytes
);
66 struct inode_fs_paths
*init_ipath(s32 total_bytes
, struct btrfs_root
*fs_root
,
67 struct btrfs_path
*path
);
68 void free_ipath(struct inode_fs_paths
*ipath
);
70 int btrfs_find_one_extref(struct btrfs_root
*root
, u64 inode_objectid
,
71 u64 start_off
, struct btrfs_path
*path
,
72 struct btrfs_inode_extref
**ret_extref
,