64 lines
2.4 KiB
C
64 lines
2.4 KiB
C
/*
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* Copyright (C) 2007 Oracle. All rights reserved.
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*
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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 __DISKIO__
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#define __DISKIO__
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#include "extent-cache.h"
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#include "list.h"
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struct btrfs_buffer {
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struct cache_extent cache_node;
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u64 bytenr;
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u64 dev_bytenr;
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u32 size;
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int count;
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int fd;
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struct list_head dirty;
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struct list_head cache;
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union {
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struct btrfs_node node;
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struct btrfs_leaf leaf;
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};
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};
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struct btrfs_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
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u32 blocksize);
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struct btrfs_buffer *find_tree_block(struct btrfs_root *root, u64 bytenr,
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u32 blocksize);
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int write_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
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struct btrfs_buffer *buf);
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int dirty_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
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struct btrfs_buffer *buf);
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int clean_tree_block(struct btrfs_trans_handle *trans,
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struct btrfs_root *root, struct btrfs_buffer *buf);
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int btrfs_commit_transaction(struct btrfs_trans_handle *trans, struct btrfs_root
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*root, struct btrfs_super_block *s);
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struct btrfs_root *open_ctree(char *filename, struct btrfs_super_block *s);
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struct btrfs_root *open_ctree_fd(int fp, struct btrfs_super_block *super);
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int close_ctree(struct btrfs_root *root, struct btrfs_super_block *s);
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void btrfs_block_release(struct btrfs_root *root, struct btrfs_buffer *buf);
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int write_ctree_super(struct btrfs_trans_handle *trans, struct btrfs_root *root,
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struct btrfs_super_block *s);
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int btrfs_map_bh_to_logical(struct btrfs_root *root, struct btrfs_buffer *bh,
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u64 logical);
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int btrfs_csum_super(struct btrfs_root *root, struct btrfs_super_block *super);
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int btrfs_csum_node(struct btrfs_root *root, struct btrfs_node *node);
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#define BTRFS_SUPER_INFO_OFFSET (16 * 1024)
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#endif
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