minix/sys/fs/v7fs/v7fs_datablock.h
Jean-Baptiste Boric 9f988b7934 Import makefs from NetBSD
Change-Id: I0ebcc9d0168df9d26cfb0af0fce2bc894ce688af
2015-10-07 12:39:44 +02:00

52 lines
2.4 KiB
C

/* $NetBSD: v7fs_datablock.h,v 1.2 2011/07/16 12:35:32 uch Exp $ */
/*-
* 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 *);
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 *);
__END_DECLS
#endif /*!_V7FS_INODE_H_ */