1 /* $NetBSD: v7fs_datablock.h,v 1.2 2011/07/16 12:35:32 uch Exp $ */ 2 3 /*- 4 * Copyright (c) 2011 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by UCHIYAMA Yasushi. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _V7FS_DATABLOCK_H_ 33 #define _V7FS_DATABLOCK_H_ 34 35 __BEGIN_DECLS 36 bool datablock_number_sanity(const struct v7fs_self *, v7fs_daddr_t); 37 int v7fs_datablock_allocate(struct v7fs_self *, v7fs_daddr_t *); 38 int v7fs_datablock_foreach(struct v7fs_self *, struct v7fs_inode *, 39 int (*)(struct v7fs_self *, void *, v7fs_daddr_t, size_t), void *); 40 v7fs_daddr_t v7fs_datablock_last(struct v7fs_self *, struct v7fs_inode *, 41 v7fs_off_t); 42 int v7fs_datablock_expand(struct v7fs_self *, struct v7fs_inode *, size_t); 43 int v7fs_datablock_contract(struct v7fs_self *, struct v7fs_inode *, size_t); 44 int v7fs_datablock_size_change(struct v7fs_self *, size_t, struct v7fs_inode *); 45 46 struct v7fs_daddr_map { 47 int level; /* direct, index1, index2, index3 */ 48 v7fs_daddr_t index[3]; 49 }; 50 int v7fs_datablock_addr(size_t, struct v7fs_daddr_map *); 51 __END_DECLS 52 #endif /*!_V7FS_INODE_H_ */ 53