forked from Mirrors/btrfs-progs
57 lines
2.1 KiB
C
57 lines
2.1 KiB
C
/*
|
|
* Copyright (C) 2007 Oracle. 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 __DISKIO__
|
|
#define __DISKIO__
|
|
#include "list.h"
|
|
|
|
struct btrfs_buffer {
|
|
u64 blocknr;
|
|
u64 dev_blocknr;
|
|
int count;
|
|
int fd;
|
|
struct list_head dirty;
|
|
struct list_head cache;
|
|
union {
|
|
struct btrfs_node node;
|
|
struct btrfs_leaf leaf;
|
|
};
|
|
};
|
|
|
|
struct btrfs_buffer *read_tree_block(struct btrfs_root *root, u64 blocknr);
|
|
struct btrfs_buffer *find_tree_block(struct btrfs_root *root, u64 blocknr);
|
|
int write_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
|
|
struct btrfs_buffer *buf);
|
|
int dirty_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
|
|
struct btrfs_buffer *buf);
|
|
int clean_tree_block(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root, struct btrfs_buffer *buf);
|
|
int btrfs_commit_transaction(struct btrfs_trans_handle *trans, struct btrfs_root
|
|
*root, struct btrfs_super_block *s);
|
|
struct btrfs_root *open_ctree(char *filename, struct btrfs_super_block *s);
|
|
struct btrfs_root *open_ctree_fd(int fp, struct btrfs_super_block *super);
|
|
int close_ctree(struct btrfs_root *root, struct btrfs_super_block *s);
|
|
void btrfs_block_release(struct btrfs_root *root, struct btrfs_buffer *buf);
|
|
int write_ctree_super(struct btrfs_trans_handle *trans, struct btrfs_root *root,
|
|
struct btrfs_super_block *s);
|
|
int btrfs_map_bh_to_logical(struct btrfs_root *root, struct btrfs_buffer *bh,
|
|
u64 logical);
|
|
#define BTRFS_SUPER_INFO_OFFSET (16 * 1024)
|
|
|
|
#endif
|