185 lines
4.5 KiB
C
185 lines
4.5 KiB
C
/*
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* Copyright (C) 2013 FUJITSU LIMITED. All rights reserved.
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* Written by Miao Xie <miaox@cn.fujitsu.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef __BTRFS_CHECK_H__
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#define __BTRFS_CHECK_H__
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#if BTRFS_FLAT_INCLUDES
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#include "kerncompat.h"
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#include "extent-cache.h"
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#include "list.h"
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#else
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#include <btrfs/kerncompat.h>
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#include <btrfs/extent-cache.h>
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#include <btrfs/list.h>
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#endif /* BTRFS_FLAT_INCLUDES */
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struct block_group_record {
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struct cache_extent cache;
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/* Used to identify the orphan block groups */
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struct list_head list;
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u64 generation;
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u64 objectid;
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u8 type;
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u64 offset;
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u64 flags;
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};
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struct block_group_tree {
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struct cache_tree tree;
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struct list_head block_groups;
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};
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struct device_record {
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struct rb_node node;
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u64 devid;
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u64 generation;
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u64 objectid;
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u8 type;
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u64 offset;
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u64 total_byte;
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u64 byte_used;
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u64 real_used;
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};
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struct stripe {
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u64 devid;
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u64 offset;
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u8 dev_uuid[BTRFS_UUID_SIZE];
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};
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struct chunk_record {
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struct cache_extent cache;
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struct list_head list;
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struct list_head dextents;
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struct block_group_record *bg_rec;
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u64 generation;
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u64 objectid;
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u8 type;
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u64 offset;
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u64 owner;
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u64 length;
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u64 type_flags;
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u64 stripe_len;
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u16 num_stripes;
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u16 sub_stripes;
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u32 io_align;
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u32 io_width;
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u32 sector_size;
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struct stripe stripes[0];
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};
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struct device_extent_record {
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struct cache_extent cache;
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/*
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* Used to identify the orphan device extents (the device extents
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* don't belong to a chunk or a device)
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*/
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struct list_head chunk_list;
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struct list_head device_list;
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u64 generation;
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u64 objectid;
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u8 type;
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u64 offset;
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u64 chunk_objecteid;
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u64 chunk_offset;
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u64 length;
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};
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struct device_extent_tree {
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struct cache_tree tree;
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/*
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* The idea is:
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* When checking the chunk information, we move the device extents
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* that has its chunk to the chunk's device extents list. After the
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* check, if there are still some device extents in no_chunk_orphans,
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* it means there are some device extents which don't belong to any
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* chunk.
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*
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* The usage of no_device_orphans is the same as the first one, but it
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* is for the device information check.
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*/
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struct list_head no_chunk_orphans;
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struct list_head no_device_orphans;
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};
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static inline unsigned long btrfs_chunk_record_size(int num_stripes)
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{
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return sizeof(struct chunk_record) +
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sizeof(struct stripe) * num_stripes;
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}
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void free_chunk_cache_tree(struct cache_tree *chunk_cache);
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u64 calc_stripe_length(u64 type, u64 length, int num_stripes);
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/* For block group tree */
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static inline void block_group_tree_init(struct block_group_tree *tree)
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{
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cache_tree_init(&tree->tree);
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INIT_LIST_HEAD(&tree->block_groups);
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}
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int insert_block_group_record(struct block_group_tree *tree,
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struct block_group_record *bg_rec);
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void free_block_group_tree(struct block_group_tree *tree);
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/* For device extent tree */
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static inline void device_extent_tree_init(struct device_extent_tree *tree)
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{
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cache_tree_init(&tree->tree);
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INIT_LIST_HEAD(&tree->no_chunk_orphans);
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INIT_LIST_HEAD(&tree->no_device_orphans);
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}
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int insert_device_extent_record(struct device_extent_tree *tree,
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struct device_extent_record *de_rec);
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void free_device_extent_tree(struct device_extent_tree *tree);
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/* Create various in-memory record by on-disk data */
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struct chunk_record *btrfs_new_chunk_record(struct extent_buffer *leaf,
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struct btrfs_key *key,
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int slot);
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struct block_group_record *
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btrfs_new_block_group_record(struct extent_buffer *leaf, struct btrfs_key *key,
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int slot);
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struct device_extent_record *
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btrfs_new_device_extent_record(struct extent_buffer *leaf,
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struct btrfs_key *key, int slot);
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int check_chunks(struct cache_tree *chunk_cache,
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struct block_group_tree *block_group_cache,
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struct device_extent_tree *dev_extent_cache,
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struct list_head *good, struct list_head *bad,
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struct list_head *rebuild, int silent);
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#endif
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