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Diffstat (limited to 'convert/source-fs.h')
| -rw-r--r-- | convert/source-fs.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/convert/source-fs.h b/convert/source-fs.h new file mode 100644 index 00000000..3a6fa46c --- /dev/null +++ b/convert/source-fs.h @@ -0,0 +1,118 @@ +/* + * 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 |