90 строки
2.9 KiB
C
90 строки
2.9 KiB
C
/*
|
|
* Copyright (C) 2011 STRATO. All rights reserved.
|
|
*
|
|
* 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_BACKREF__
|
|
#define __BTRFS_BACKREF__
|
|
|
|
#include <linux/btrfs.h>
|
|
#include "ulist.h"
|
|
#include "extent_io.h"
|
|
|
|
struct inode_fs_paths {
|
|
struct btrfs_path *btrfs_path;
|
|
struct btrfs_root *fs_root;
|
|
struct btrfs_data_container *fspath;
|
|
};
|
|
|
|
typedef int (iterate_extent_inodes_t)(u64 inum, u64 offset, u64 root,
|
|
void *ctx);
|
|
|
|
int extent_from_logical(struct btrfs_fs_info *fs_info, u64 logical,
|
|
struct btrfs_path *path, struct btrfs_key *found_key,
|
|
u64 *flags);
|
|
|
|
int tree_backref_for_extent(unsigned long *ptr, struct extent_buffer *eb,
|
|
struct btrfs_key *key, struct btrfs_extent_item *ei,
|
|
u32 item_size, u64 *out_root, u8 *out_level);
|
|
|
|
int iterate_extent_inodes(struct btrfs_fs_info *fs_info,
|
|
u64 extent_item_objectid,
|
|
u64 extent_offset, int search_commit_root,
|
|
iterate_extent_inodes_t *iterate, void *ctx,
|
|
bool ignore_offset);
|
|
|
|
int iterate_inodes_from_logical(u64 logical, struct btrfs_fs_info *fs_info,
|
|
struct btrfs_path *path,
|
|
iterate_extent_inodes_t *iterate, void *ctx,
|
|
bool ignore_offset);
|
|
|
|
int paths_from_inode(u64 inum, struct inode_fs_paths *ipath);
|
|
|
|
int btrfs_find_all_roots(struct btrfs_trans_handle *trans,
|
|
struct btrfs_fs_info *fs_info, u64 bytenr,
|
|
u64 time_seq, struct ulist **roots, bool ignore_offset);
|
|
char *btrfs_ref_to_path(struct btrfs_root *fs_root, struct btrfs_path *path,
|
|
u32 name_len, unsigned long name_off,
|
|
struct extent_buffer *eb_in, u64 parent,
|
|
char *dest, u32 size);
|
|
|
|
struct btrfs_data_container *init_data_container(u32 total_bytes);
|
|
struct inode_fs_paths *init_ipath(s32 total_bytes, struct btrfs_root *fs_root,
|
|
struct btrfs_path *path);
|
|
void free_ipath(struct inode_fs_paths *ipath);
|
|
|
|
int btrfs_find_one_extref(struct btrfs_root *root, u64 inode_objectid,
|
|
u64 start_off, struct btrfs_path *path,
|
|
struct btrfs_inode_extref **ret_extref,
|
|
u64 *found_off);
|
|
int btrfs_check_shared(struct btrfs_root *root, u64 inum, u64 bytenr);
|
|
|
|
int __init btrfs_prelim_ref_init(void);
|
|
void btrfs_prelim_ref_exit(void);
|
|
|
|
struct prelim_ref {
|
|
struct rb_node rbnode;
|
|
u64 root_id;
|
|
struct btrfs_key key_for_search;
|
|
int level;
|
|
int count;
|
|
struct extent_inode_elem *inode_list;
|
|
u64 parent;
|
|
u64 wanted_disk_byte;
|
|
};
|
|
|
|
#endif
|