1 /* 2 * Copyright (C) 2011 STRATO. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public 6 * License v2 as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 11 * General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public 14 * License along with this program; if not, write to the 15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 16 * Boston, MA 021110-1307, USA. 17 */ 18 19 #ifndef __BTRFS_BACKREF__ 20 #define __BTRFS_BACKREF__ 21 22 #include "ioctl.h" 23 #include "ulist.h" 24 25 struct inode_fs_paths { 26 struct btrfs_path *btrfs_path; 27 struct btrfs_root *fs_root; 28 struct btrfs_data_container *fspath; 29 }; 30 31 typedef int (iterate_extent_inodes_t)(u64 inum, u64 offset, u64 root, 32 void *ctx); 33 typedef int (iterate_irefs_t)(u64 parent, struct btrfs_inode_ref *iref, 34 struct extent_buffer *eb, void *ctx); 35 36 int inode_item_info(u64 inum, u64 ioff, struct btrfs_root *fs_root, 37 struct btrfs_path *path); 38 39 int extent_from_logical(struct btrfs_fs_info *fs_info, u64 logical, 40 struct btrfs_path *path, struct btrfs_key *found_key); 41 42 int tree_backref_for_extent(unsigned long *ptr, struct extent_buffer *eb, 43 struct btrfs_extent_item *ei, u32 item_size, 44 u64 *out_root, u8 *out_level); 45 46 int iterate_extent_inodes(struct btrfs_fs_info *fs_info, 47 struct btrfs_path *path, 48 u64 extent_item_objectid, 49 u64 extent_offset, 50 iterate_extent_inodes_t *iterate, void *ctx); 51 52 int iterate_inodes_from_logical(u64 logical, struct btrfs_fs_info *fs_info, 53 struct btrfs_path *path, 54 iterate_extent_inodes_t *iterate, void *ctx); 55 56 int paths_from_inode(u64 inum, struct inode_fs_paths *ipath); 57 58 int btrfs_find_all_roots(struct btrfs_trans_handle *trans, 59 struct btrfs_fs_info *fs_info, u64 bytenr, 60 u64 num_bytes, u64 seq, struct ulist **roots); 61 62 struct btrfs_data_container *init_data_container(u32 total_bytes); 63 struct inode_fs_paths *init_ipath(s32 total_bytes, struct btrfs_root *fs_root, 64 struct btrfs_path *path); 65 void free_ipath(struct inode_fs_paths *ipath); 66 67 #endif 68