From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- fs/btrfs/tree-checker.h | 72 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 fs/btrfs/tree-checker.h (limited to 'fs/btrfs/tree-checker.h') diff --git a/fs/btrfs/tree-checker.h b/fs/btrfs/tree-checker.h new file mode 100644 index 0000000000..3c2a02a72f --- /dev/null +++ b/fs/btrfs/tree-checker.h @@ -0,0 +1,72 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) Qu Wenruo 2017. All rights reserved. + */ + +#ifndef BTRFS_TREE_CHECKER_H +#define BTRFS_TREE_CHECKER_H + +#include + +struct extent_buffer; +struct btrfs_chunk; + +/* All the extra info needed to verify the parentness of a tree block. */ +struct btrfs_tree_parent_check { + /* + * The owner check against the tree block. + * + * Can be 0 to skip the owner check. + */ + u64 owner_root; + + /* + * Expected transid, can be 0 to skip the check, but such skip + * should only be utlized for backref walk related code. + */ + u64 transid; + + /* + * The expected first key. + * + * This check can be skipped if @has_first_key is false, such skip + * can happen for case where we don't have the parent node key, + * e.g. reading the tree root, doing backref walk. + */ + struct btrfs_key first_key; + bool has_first_key; + + /* The expected level. Should always be set. */ + u8 level; +}; + +enum btrfs_tree_block_status { + BTRFS_TREE_BLOCK_CLEAN, + BTRFS_TREE_BLOCK_INVALID_NRITEMS, + BTRFS_TREE_BLOCK_INVALID_PARENT_KEY, + BTRFS_TREE_BLOCK_BAD_KEY_ORDER, + BTRFS_TREE_BLOCK_INVALID_LEVEL, + BTRFS_TREE_BLOCK_INVALID_FREE_SPACE, + BTRFS_TREE_BLOCK_INVALID_OFFSETS, + BTRFS_TREE_BLOCK_INVALID_BLOCKPTR, + BTRFS_TREE_BLOCK_INVALID_ITEM, + BTRFS_TREE_BLOCK_INVALID_OWNER, +}; + +/* + * Exported simply for btrfs-progs which wants to have the + * btrfs_tree_block_status return codes. + */ +enum btrfs_tree_block_status __btrfs_check_leaf(struct extent_buffer *leaf); +enum btrfs_tree_block_status __btrfs_check_node(struct extent_buffer *node); + +int btrfs_check_leaf(struct extent_buffer *leaf); +int btrfs_check_node(struct extent_buffer *node); + +int btrfs_check_chunk_valid(struct extent_buffer *leaf, + struct btrfs_chunk *chunk, u64 logical); +int btrfs_check_eb_owner(const struct extent_buffer *eb, u64 root_owner); +int btrfs_verify_level_key(struct extent_buffer *eb, int level, + struct btrfs_key *first_key, u64 parent_transid); + +#endif -- cgit v1.2.3