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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#ifndef __BTRFS_IMAGE_METADUMP_H__
#define __BTRFS_IMAGE_METADUMP_H__
#include "kerncompat.h"
#include "kernel-lib/rbtree.h"
#include "kernel-lib/list.h"
#include "ctree.h"
#define HEADER_MAGIC 0xbd5c25e27295668bULL
#define MAX_PENDING_SIZE (256 * 1024)
#define BLOCK_SIZE 1024
#define BLOCK_MASK (BLOCK_SIZE - 1)
#define ITEMS_PER_CLUSTER ((BLOCK_SIZE - sizeof(struct meta_cluster)) / \
sizeof(struct meta_cluster_item))
#define COMPRESS_NONE 0
#define COMPRESS_ZLIB 1
struct meta_cluster_item {
__le64 bytenr;
__le32 size;
} __attribute__ ((__packed__));
struct meta_cluster_header {
__le64 magic;
__le64 bytenr;
__le32 nritems;
u8 compress;
} __attribute__ ((__packed__));
/* cluster header + index items + buffers */
struct meta_cluster {
struct meta_cluster_header header;
struct meta_cluster_item items[];
} __attribute__ ((__packed__));
struct fs_chunk {
u64 logical;
u64 physical;
/*
* physical_dup only store additonal physical for BTRFS_BLOCK_GROUP_DUP
* currently restore only support single and DUP
* TODO: modify this structure and the function related to this
* structure for support RAID*
*/
u64 physical_dup;
u64 bytes;
struct rb_node l;
struct rb_node p;
struct list_head list;
};
#endif
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