89d5eb5527
Since btrfs_reserved_ranges array is just used to store btrfs reserved ranges, no one will nor should modify them at run time, make them static and const will be better. This also eliminates the use of immediate number 3. Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> [ definition stays in source-fs.c ] Signed-off-by: David Sterba <dsterba@suse.com>
116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef __BTRFS_CONVERT_SOURCE_FS_H__
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#define __BTRFS_CONVERT_SOURCE_FS_H__
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#include "kerncompat.h"
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#define CONV_IMAGE_SUBVOL_OBJECTID BTRFS_FIRST_FREE_OBJECTID
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/*
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* Reresents a simple contiguous range.
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*
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* For multiple or non-contiguous ranges, use extent_cache_tree from
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* extent-cache.c
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*/
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struct simple_range {
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u64 start;
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u64 len;
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};
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extern const struct simple_range btrfs_reserved_ranges[3];
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struct task_info;
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struct task_ctx {
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u64 max_copy_inodes;
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u64 cur_copy_inodes;
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struct task_info *info;
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};
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struct btrfs_convert_context;
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#define SOURCE_FS_NAME_LEN (16)
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#define CONVERT_FLAG_DATACSUM (1U << 0)
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#define CONVERT_FLAG_INLINE_DATA (1U << 1)
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#define CONVERT_FLAG_XATTR (1U << 2)
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#define CONVERT_FLAG_COPY_LABEL (1U << 3)
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#define CONVERT_FLAG_SET_LABEL (1U << 4)
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struct btrfs_convert_operations {
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const char name[SOURCE_FS_NAME_LEN];
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int (*open_fs)(struct btrfs_convert_context *cctx, const char *devname);
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int (*read_used_space)(struct btrfs_convert_context *cctx);
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int (*copy_inodes)(struct btrfs_convert_context *cctx,
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struct btrfs_root *root, u32 covert_flags,
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struct task_ctx *p);
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void (*close_fs)(struct btrfs_convert_context *cctx);
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int (*check_state)(struct btrfs_convert_context *cctx);
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};
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struct btrfs_trans_handle;
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struct btrfs_root;
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struct btrfs_inode_item;
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struct blk_iterate_data {
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struct btrfs_trans_handle *trans;
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struct btrfs_root *root;
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struct btrfs_root *convert_root;
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struct btrfs_inode_item *inode;
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u64 convert_ino;
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u64 objectid;
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u64 first_block;
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u64 disk_block;
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u64 num_blocks;
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u64 boundary;
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int checksum;
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int errcode;
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};
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void init_convert_context(struct btrfs_convert_context *cctx);
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void clean_convert_context(struct btrfs_convert_context *cctx);
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int block_iterate_proc(u64 disk_block, u64 file_block,
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struct blk_iterate_data *idata);
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void init_blk_iterate_data(struct blk_iterate_data *data,
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struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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struct btrfs_inode_item *inode,
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u64 objectid, int checksum);
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int convert_insert_dirent(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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const char *name, size_t name_len,
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u64 dir, u64 objectid,
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u8 file_type, u64 index_cnt,
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struct btrfs_inode_item *inode);
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int read_disk_extent(struct btrfs_root *root, u64 bytenr,
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u32 num_bytes, char *buffer);
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int record_file_blocks(struct blk_iterate_data *data,
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u64 file_block, u64 disk_block, u64 num_blocks);
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/*
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* Simple range functions
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*
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* Get range end (exclusive)
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*/
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static inline u64 range_end(const struct simple_range *range)
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{
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return (range->start + range->len);
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}
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#endif
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