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a7b4e6c7aa
We use this in btrfs-progs to determine if we can fix different types of corruptions. We don't care about this in the kernel, however it would be good to share this code between the kernel and btrfs-progs, so add the status definitions so we can start converting the tree-checker code over to using these status flags instead of blanket returning -EUCLEAN. Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: David Sterba <dsterba@suse.com>
64 lines
1.6 KiB
C
64 lines
1.6 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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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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#endif
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