1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (C) Qu Wenruo 2017. All rights reserved.
6 #ifndef BTRFS_TREE_CHECKER_H
7 #define BTRFS_TREE_CHECKER_H
9 #include <uapi/linux/btrfs_tree.h>
14 /* All the extra info needed to verify the parentness of a tree block. */
15 struct btrfs_tree_parent_check {
17 * The owner check against the tree block.
19 * Can be 0 to skip the owner check.
24 * Expected transid, can be 0 to skip the check, but such skip
25 * should only be utlized for backref walk related code.
30 * The expected first key.
32 * This check can be skipped if @has_first_key is false, such skip
33 * can happen for case where we don't have the parent node key,
34 * e.g. reading the tree root, doing backref walk.
36 struct btrfs_key first_key;
39 /* The expected level. Should always be set. */
43 enum btrfs_tree_block_status {
44 BTRFS_TREE_BLOCK_CLEAN,
45 BTRFS_TREE_BLOCK_INVALID_NRITEMS,
46 BTRFS_TREE_BLOCK_INVALID_PARENT_KEY,
47 BTRFS_TREE_BLOCK_BAD_KEY_ORDER,
48 BTRFS_TREE_BLOCK_INVALID_LEVEL,
49 BTRFS_TREE_BLOCK_INVALID_FREE_SPACE,
50 BTRFS_TREE_BLOCK_INVALID_OFFSETS,
51 BTRFS_TREE_BLOCK_INVALID_BLOCKPTR,
52 BTRFS_TREE_BLOCK_INVALID_ITEM,
53 BTRFS_TREE_BLOCK_INVALID_OWNER,
57 * Exported simply for btrfs-progs which wants to have the
58 * btrfs_tree_block_status return codes.
60 enum btrfs_tree_block_status __btrfs_check_leaf(struct extent_buffer *leaf);
61 enum btrfs_tree_block_status __btrfs_check_node(struct extent_buffer *node);
63 int btrfs_check_leaf(struct extent_buffer *leaf);
64 int btrfs_check_node(struct extent_buffer *node);
66 int btrfs_check_chunk_valid(struct extent_buffer *leaf,
67 struct btrfs_chunk *chunk, u64 logical);
68 int btrfs_check_eb_owner(const struct extent_buffer *eb, u64 root_owner);
69 int btrfs_verify_level_key(struct extent_buffer *eb, int level,
70 struct btrfs_key *first_key, u64 parent_transid);