kernel: Adjust some comments to the unionfs removal.
[dragonfly.git] / include / struct.h
CommitLineData
984263bc
MD
1/*-
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)struct.h 8.1 (Berkeley) 6/2/93
34 *
35 * $FreeBSD: src/include/struct.h,v 1.1.1.1.14.1 2001/03/05 13:08:49 obrien Exp $
1de703da 36 * $DragonFly: src/include/struct.h,v 1.2 2003/06/17 04:25:56 dillon Exp $
984263bc
MD
37 */
38
39#ifndef _STRUCT_H_
40#define _STRUCT_H_
41
42#if __GNUC__
43#warning "this file includes <struct.h> which is deprecated, use <stddef.h> instead"
44#endif
45
46/* Offset of the field in the structure. */
47#define fldoff(name, field) \
48 ((int)&(((struct name *)0)->field))
49
50/* Size of the field in the structure. */
51#define fldsiz(name, field) \
52 (sizeof(((struct name *)0)->field))
53
54/* Address of the structure from a field. */
55#define strbase(name, addr, field) \
56 ((struct name *)((char *)(addr) - fldoff(name, field)))
57
58#endif /* !_STRUCT_H_ */