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"
24 #define CONV_IMAGE_SUBVOL_OBJECTID BTRFS_FIRST_FREE_OBJECTID
27 * Reresents a simple contiguous range.
29 * For multiple or non-contiguous ranges, use extent_cache_tree from
37 extern const struct simple_range btrfs_reserved_ranges[3];
42 pthread_mutex_t mutex;
45 struct task_info *info;
48 struct btrfs_convert_context;
50 #define SOURCE_FS_NAME_LEN (16)
52 #define CONVERT_FLAG_DATACSUM (1U << 0)
53 #define CONVERT_FLAG_INLINE_DATA (1U << 1)
54 #define CONVERT_FLAG_XATTR (1U << 2)
55 #define CONVERT_FLAG_COPY_LABEL (1U << 3)
56 #define CONVERT_FLAG_SET_LABEL (1U << 4)
58 /* 23.2.5 acl_tag_t values */
60 #define ACL_UNDEFINED_TAG (0x00)
61 #define ACL_USER_OBJ (0x01)
62 #define ACL_USER (0x02)
63 #define ACL_GROUP_OBJ (0x04)
64 #define ACL_GROUP (0x08)
65 #define ACL_MASK (0x10)
66 #define ACL_OTHER (0x20)
68 /* 23.2.7 ACL qualifier constants */
70 #define ACL_UNDEFINED_ID ((id_t)-1)
72 #define ACL_EA_VERSION 0x0002
82 acl_ea_entry a_entries[0];
94 } ext2_acl_entry_short;
100 static inline size_t acl_ea_size(int count)
102 return sizeof(acl_ea_header) + count * sizeof(acl_ea_entry);
105 struct btrfs_convert_operations {
106 const char name[SOURCE_FS_NAME_LEN];
107 int (*open_fs)(struct btrfs_convert_context *cctx, const char *devname);
108 int (*read_used_space)(struct btrfs_convert_context *cctx);
109 int (*copy_inodes)(struct btrfs_convert_context *cctx,
110 struct btrfs_root *root, u32 covert_flags,
112 void (*close_fs)(struct btrfs_convert_context *cctx);
113 int (*check_state)(struct btrfs_convert_context *cctx);
116 struct btrfs_trans_handle;
118 struct btrfs_inode_item;
120 struct blk_iterate_data {
121 struct btrfs_trans_handle *trans;
122 struct btrfs_root *root;
123 struct btrfs_root *convert_root;
124 struct btrfs_inode_item *inode;
135 void init_convert_context(struct btrfs_convert_context *cctx);
136 void clean_convert_context(struct btrfs_convert_context *cctx);
137 int block_iterate_proc(u64 disk_block, u64 file_block,
138 struct blk_iterate_data *idata);
139 void init_blk_iterate_data(struct blk_iterate_data *data,
140 struct btrfs_trans_handle *trans,
141 struct btrfs_root *root,
142 struct btrfs_inode_item *inode,
143 u64 objectid, int checksum);
144 int convert_insert_dirent(struct btrfs_trans_handle *trans,
145 struct btrfs_root *root,
146 const char *name, size_t name_len,
147 u64 dir, u64 objectid,
148 u8 file_type, u64 index_cnt,
149 struct btrfs_inode_item *inode);
150 int read_disk_extent(struct btrfs_root *root, u64 bytenr,
151 u32 num_bytes, char *buffer);
152 int record_file_blocks(struct blk_iterate_data *data,
153 u64 file_block, u64 disk_block, u64 num_blocks);
156 * Simple range functions
158 * Get range end (exclusive)
160 static inline u64 range_end(const struct simple_range *range)
162 return (range->start + range->len);