2011-07-16 16:35:32 +04:00
|
|
|
/* $NetBSD: v7fs_datablock.h,v 1.2 2011/07/16 12:35:32 uch Exp $ */
|
2011-06-27 15:52:22 +04:00
|
|
|
|
|
|
|
|
/*-
|
|
|
|
|
* Copyright (c) 2011 The NetBSD Foundation, Inc.
|
|
|
|
|
* All rights reserved.
|
|
|
|
|
*
|
|
|
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
|
|
|
* by UCHIYAMA Yasushi.
|
|
|
|
|
*
|
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
|
* modification, are permitted provided that the following conditions
|
|
|
|
|
* are met:
|
|
|
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
|
|
|
* notice, this list of conditions and the following disclaimer.
|
|
|
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
|
|
|
* documentation and/or other materials provided with the distribution.
|
|
|
|
|
*
|
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
|
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
|
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
|
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
|
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
|
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
|
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
|
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
|
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
|
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
|
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#ifndef _V7FS_DATABLOCK_H_
|
|
|
|
|
#define _V7FS_DATABLOCK_H_
|
|
|
|
|
|
|
|
|
|
__BEGIN_DECLS
|
|
|
|
|
bool datablock_number_sanity(const struct v7fs_self *, v7fs_daddr_t);
|
|
|
|
|
int v7fs_datablock_allocate(struct v7fs_self *, v7fs_daddr_t *);
|
|
|
|
|
int v7fs_datablock_foreach(struct v7fs_self *, struct v7fs_inode *,
|
|
|
|
|
int (*)(struct v7fs_self *, void *, v7fs_daddr_t, size_t), void *);
|
|
|
|
|
v7fs_daddr_t v7fs_datablock_last(struct v7fs_self *, struct v7fs_inode *,
|
|
|
|
|
v7fs_off_t);
|
|
|
|
|
int v7fs_datablock_expand(struct v7fs_self *, struct v7fs_inode *, size_t);
|
|
|
|
|
int v7fs_datablock_contract(struct v7fs_self *, struct v7fs_inode *, size_t);
|
|
|
|
|
int v7fs_datablock_size_change(struct v7fs_self *, size_t, struct v7fs_inode *);
|
2011-07-16 16:35:32 +04:00
|
|
|
|
|
|
|
|
struct v7fs_daddr_map {
|
|
|
|
|
int level; /* direct, index1, index2, index3 */
|
|
|
|
|
v7fs_daddr_t index[3];
|
|
|
|
|
};
|
|
|
|
|
int v7fs_datablock_addr(size_t, struct v7fs_daddr_map *);
|
2011-06-27 15:52:22 +04:00
|
|
|
__END_DECLS
|
|
|
|
|
#endif /*!_V7FS_INODE_H_ */
|
