xref: /freebsd/usr.sbin/makefs/ffs/buf.h (revision 076ad2f836d5f49dc1375f1677335a48fe0d4b82)
1 /*	$NetBSD: buf.h,v 1.3 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 ucred;
47 
48 struct vnode {
49 	int fd;
50 	void *fs;
51 	void *v_data;
52 	int offset;
53 };
54 
55 struct buf {
56 	void *		b_data;
57 	long		b_bufsize;
58 	long		b_bcount;
59 	daddr_t		b_blkno;
60 	daddr_t		b_lblkno;
61 	int		b_fd;
62 	struct fs *	b_fs;
63 
64 	TAILQ_ENTRY(buf)	b_tailq;
65 };
66 
67 void		bcleanup(void);
68 int		bread(struct vnode *, daddr_t, int, struct ucred *,
69     struct buf **);
70 void		brelse(struct buf *, int);
71 int		bwrite(struct buf *);
72 struct buf *	getblk(struct vnode *, daddr_t, int, int, int, int);
73 
74 #define	bdwrite(bp)	bwrite(bp)
75 #define	clrbuf(bp)	memset((bp)->b_data, 0, (u_int)(bp)->b_bcount)
76 
77 #endif	/* _FFS_BUF_H */
78