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2cac5af165
This is more a buffer validation helper, move it into the tree-checker files where it makes more sense. Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: David Sterba <dsterba@suse.com>
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) Qu Wenruo 2017. All rights reserved.
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*/
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#ifndef BTRFS_TREE_CHECKER_H
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#define BTRFS_TREE_CHECKER_H
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#include <uapi/linux/btrfs_tree.h>
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struct extent_buffer;
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struct btrfs_chunk;
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/* All the extra info needed to verify the parentness of a tree block. */
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struct btrfs_tree_parent_check {
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/*
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* The owner check against the tree block.
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*
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* Can be 0 to skip the owner check.
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*/
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u64 owner_root;
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/*
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* Expected transid, can be 0 to skip the check, but such skip
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* should only be utlized for backref walk related code.
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*/
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u64 transid;
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/*
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* The expected first key.
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*
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* This check can be skipped if @has_first_key is false, such skip
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* can happen for case where we don't have the parent node key,
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* e.g. reading the tree root, doing backref walk.
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*/
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struct btrfs_key first_key;
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bool has_first_key;
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/* The expected level. Should always be set. */
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u8 level;
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};
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enum btrfs_tree_block_status {
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BTRFS_TREE_BLOCK_CLEAN,
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BTRFS_TREE_BLOCK_INVALID_NRITEMS,
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BTRFS_TREE_BLOCK_INVALID_PARENT_KEY,
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BTRFS_TREE_BLOCK_BAD_KEY_ORDER,
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BTRFS_TREE_BLOCK_INVALID_LEVEL,
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BTRFS_TREE_BLOCK_INVALID_FREE_SPACE,
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BTRFS_TREE_BLOCK_INVALID_OFFSETS,
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BTRFS_TREE_BLOCK_INVALID_BLOCKPTR,
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BTRFS_TREE_BLOCK_INVALID_ITEM,
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BTRFS_TREE_BLOCK_INVALID_OWNER,
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};
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/*
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* Exported simply for btrfs-progs which wants to have the
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* btrfs_tree_block_status return codes.
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*/
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enum btrfs_tree_block_status __btrfs_check_leaf(struct extent_buffer *leaf);
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enum btrfs_tree_block_status __btrfs_check_node(struct extent_buffer *node);
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int btrfs_check_leaf(struct extent_buffer *leaf);
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int btrfs_check_node(struct extent_buffer *node);
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int btrfs_check_chunk_valid(struct extent_buffer *leaf,
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struct btrfs_chunk *chunk, u64 logical);
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int btrfs_check_eb_owner(const struct extent_buffer *eb, u64 root_owner);
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int btrfs_verify_level_key(struct extent_buffer *eb, int level,
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struct btrfs_key *first_key, u64 parent_transid);
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#endif
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