1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * Copyright (C) Qu Wenruo 2017. All rights reserved. |
4 | */ |
5 | |
6 | #ifndef BTRFS_TREE_CHECKER_H |
7 | #define BTRFS_TREE_CHECKER_H |
8 | |
9 | #include <linux/types.h> |
10 | #include <uapi/linux/btrfs_tree.h> |
11 | |
12 | struct extent_buffer; |
13 | struct btrfs_chunk; |
14 | struct btrfs_key; |
15 | |
16 | /* All the extra info needed to verify the parentness of a tree block. */ |
17 | struct btrfs_tree_parent_check { |
18 | /* |
19 | * The owner check against the tree block. |
20 | * |
21 | * Can be 0 to skip the owner check. |
22 | */ |
23 | u64 owner_root; |
24 | |
25 | /* |
26 | * Expected transid, can be 0 to skip the check, but such skip |
27 | * should only be utilized for backref walk related code. |
28 | */ |
29 | u64 transid; |
30 | |
31 | /* |
32 | * The expected first key. |
33 | * |
34 | * This check can be skipped if @has_first_key is false, such skip |
35 | * can happen for case where we don't have the parent node key, |
36 | * e.g. reading the tree root, doing backref walk. |
37 | */ |
38 | struct btrfs_key first_key; |
39 | bool has_first_key; |
40 | |
41 | /* The expected level. Should always be set. */ |
42 | u8 level; |
43 | }; |
44 | |
45 | enum btrfs_tree_block_status { |
46 | BTRFS_TREE_BLOCK_CLEAN, |
47 | BTRFS_TREE_BLOCK_INVALID_NRITEMS, |
48 | BTRFS_TREE_BLOCK_INVALID_PARENT_KEY, |
49 | BTRFS_TREE_BLOCK_BAD_KEY_ORDER, |
50 | BTRFS_TREE_BLOCK_INVALID_LEVEL, |
51 | BTRFS_TREE_BLOCK_INVALID_FREE_SPACE, |
52 | BTRFS_TREE_BLOCK_INVALID_OFFSETS, |
53 | BTRFS_TREE_BLOCK_INVALID_BLOCKPTR, |
54 | BTRFS_TREE_BLOCK_INVALID_ITEM, |
55 | BTRFS_TREE_BLOCK_INVALID_OWNER, |
56 | }; |
57 | |
58 | /* |
59 | * Exported simply for btrfs-progs which wants to have the |
60 | * btrfs_tree_block_status return codes. |
61 | */ |
62 | enum btrfs_tree_block_status __btrfs_check_leaf(struct extent_buffer *leaf); |
63 | enum btrfs_tree_block_status __btrfs_check_node(struct extent_buffer *node); |
64 | |
65 | int btrfs_check_leaf(struct extent_buffer *leaf); |
66 | int btrfs_check_node(struct extent_buffer *node); |
67 | |
68 | int btrfs_check_chunk_valid(struct extent_buffer *leaf, |
69 | struct btrfs_chunk *chunk, u64 logical); |
70 | int btrfs_check_eb_owner(const struct extent_buffer *eb, u64 root_owner); |
71 | int btrfs_verify_level_key(struct extent_buffer *eb, int level, |
72 | struct btrfs_key *first_key, u64 parent_transid); |
73 | |
74 | #endif |
75 | |