1 /* $NetBSD: buf.h,v 1.2 2001/11/02 03:12:49 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Luke Mewburn for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 * 37 * $FreeBSD$ 38 */ 39 40 #ifndef _FFS_BUF_H 41 #define _FFS_BUF_H 42 43 #include <sys/param.h> 44 #include <sys/queue.h> 45 46 struct buf { 47 void * b_data; 48 long b_bufsize; 49 long b_bcount; 50 daddr_t b_blkno; 51 daddr_t b_lblkno; 52 int b_fd; 53 struct fs * b_fs; 54 55 TAILQ_ENTRY(buf) b_tailq; 56 }; 57 58 void bcleanup(void); 59 int bread(int, struct fs *, daddr_t, int, struct buf **); 60 void brelse(struct buf *); 61 int bwrite(struct buf *); 62 struct buf * getblk(int, struct fs *, daddr_t, int); 63 64 #define bdwrite(bp) bwrite(bp) 65 #define clrbuf(bp) memset((bp)->b_data, 0, (u_int)(bp)->b_bcount) 66 67 #endif /* _FFS_BUF_H */ 68