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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_CONVERT_SOURCE_FS_H__
#define __BTRFS_CONVERT_SOURCE_FS_H__
#include "kerncompat.h"
#include <pthread.h>
#define CONV_IMAGE_SUBVOL_OBJECTID BTRFS_FIRST_FREE_OBJECTID
/*
* Reresents a simple contiguous range.
*
* For multiple or non-contiguous ranges, use extent_cache_tree from
* extent-cache.c
*/
struct simple_range {
u64 start;
u64 len;
};
extern const struct simple_range btrfs_reserved_ranges[3];
struct task_info;
struct task_ctx {
pthread_mutex_t mutex;
u64 max_copy_inodes;
u64 cur_copy_inodes;
struct task_info *info;
};
struct btrfs_convert_context;
#define SOURCE_FS_NAME_LEN (16)
#define CONVERT_FLAG_DATACSUM (1U << 0)
#define CONVERT_FLAG_INLINE_DATA (1U << 1)
#define CONVERT_FLAG_XATTR (1U << 2)
#define CONVERT_FLAG_COPY_LABEL (1U << 3)
#define CONVERT_FLAG_SET_LABEL (1U << 4)
struct btrfs_convert_operations {
const char name[SOURCE_FS_NAME_LEN];
int (*open_fs)(struct btrfs_convert_context *cctx, const char *devname);
int (*read_used_space)(struct btrfs_convert_context *cctx);
int (*copy_inodes)(struct btrfs_convert_context *cctx,
struct btrfs_root *root, u32 covert_flags,
struct task_ctx *p);
void (*close_fs)(struct btrfs_convert_context *cctx);
int (*check_state)(struct btrfs_convert_context *cctx);
};
struct btrfs_trans_handle;
struct btrfs_root;
struct btrfs_inode_item;
struct blk_iterate_data {
struct btrfs_trans_handle *trans;
struct btrfs_root *root;
struct btrfs_root *convert_root;
struct btrfs_inode_item *inode;
u64 convert_ino;
u64 objectid;
u64 first_block;
u64 disk_block;
u64 num_blocks;
u64 boundary;
int checksum;
int errcode;
};
void init_convert_context(struct btrfs_convert_context *cctx);
void clean_convert_context(struct btrfs_convert_context *cctx);
int block_iterate_proc(u64 disk_block, u64 file_block,
struct blk_iterate_data *idata);
void init_blk_iterate_data(struct blk_iterate_data *data,
struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_inode_item *inode,
u64 objectid, int checksum);
int convert_insert_dirent(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
const char *name, size_t name_len,
u64 dir, u64 objectid,
u8 file_type, u64 index_cnt,
struct btrfs_inode_item *inode);
int read_disk_extent(struct btrfs_root *root, u64 bytenr,
u32 num_bytes, char *buffer);
int record_file_blocks(struct blk_iterate_data *data,
u64 file_block, u64 disk_block, u64 num_blocks);
/*
* Simple range functions
*
* Get range end (exclusive)
*/
static inline u64 range_end(const struct simple_range *range)
{
return (range->start + range->len);
}
#endif
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