2 * This program is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU General Public
4 * License v2 as published by the Free Software Foundation.
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
9 * General Public License for more details.
11 * You should have received a copy of the GNU General Public
12 * License along with this program; if not, write to the
13 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
14 * Boston, MA 021110-1307, USA.
17 #ifndef __BTRFS_CONVERT_SOURCE_FS_H__
18 #define __BTRFS_CONVERT_SOURCE_FS_H__
20 #include "kerncompat.h"
22 #define CONV_IMAGE_SUBVOL_OBJECTID BTRFS_FIRST_FREE_OBJECTID
25 * Reresents a simple contiguous range.
27 * For multiple or non-contiguous ranges, use extent_cache_tree from
35 extern const struct simple_range btrfs_reserved_ranges[3];
42 struct task_info *info;
45 struct btrfs_convert_context;
47 #define SOURCE_FS_NAME_LEN (16)
49 #define CONVERT_FLAG_DATACSUM (1U << 0)
50 #define CONVERT_FLAG_INLINE_DATA (1U << 1)
51 #define CONVERT_FLAG_XATTR (1U << 2)
52 #define CONVERT_FLAG_COPY_LABEL (1U << 3)
53 #define CONVERT_FLAG_SET_LABEL (1U << 4)
55 struct btrfs_convert_operations {
56 const char name[SOURCE_FS_NAME_LEN];
57 int (*open_fs)(struct btrfs_convert_context *cctx, const char *devname);
58 int (*read_used_space)(struct btrfs_convert_context *cctx);
59 int (*copy_inodes)(struct btrfs_convert_context *cctx,
60 struct btrfs_root *root, u32 covert_flags,
62 void (*close_fs)(struct btrfs_convert_context *cctx);
63 int (*check_state)(struct btrfs_convert_context *cctx);
66 struct btrfs_trans_handle;
68 struct btrfs_inode_item;
70 struct blk_iterate_data {
71 struct btrfs_trans_handle *trans;
72 struct btrfs_root *root;
73 struct btrfs_root *convert_root;
74 struct btrfs_inode_item *inode;
85 void init_convert_context(struct btrfs_convert_context *cctx);
86 void clean_convert_context(struct btrfs_convert_context *cctx);
87 int block_iterate_proc(u64 disk_block, u64 file_block,
88 struct blk_iterate_data *idata);
89 void init_blk_iterate_data(struct blk_iterate_data *data,
90 struct btrfs_trans_handle *trans,
91 struct btrfs_root *root,
92 struct btrfs_inode_item *inode,
93 u64 objectid, int checksum);
94 int convert_insert_dirent(struct btrfs_trans_handle *trans,
95 struct btrfs_root *root,
96 const char *name, size_t name_len,
97 u64 dir, u64 objectid,
98 u8 file_type, u64 index_cnt,
99 struct btrfs_inode_item *inode);
100 int read_disk_extent(struct btrfs_root *root, u64 bytenr,
101 u32 num_bytes, char *buffer);
102 int record_file_blocks(struct blk_iterate_data *data,
103 u64 file_block, u64 disk_block, u64 num_blocks);
106 * Simple range functions
108 * Get range end (exclusive)
110 static inline u64 range_end(const struct simple_range *range)
112 return (range->start + range->len);