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struct.h
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struct.h
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/*-
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)struct.h 8.1 (Berkeley) 6/2/93
*
* $FreeBSD: src/include/struct.h,v 1.1.1.1.14.1 2001/03/05 13:08:49 obrien Exp $
* $DragonFly: src/include/struct.h,v 1.2 2003/06/17 04:25:56 dillon Exp $
*/
#ifndef _STRUCT_H_
#define _STRUCT_H_
#if __GNUC__
#warning "this file includes <struct.h> which is deprecated, use <stddef.h> instead"
#endif
/* Offset of the field in the structure. */
#define fldoff(name, field) \
((int)&(((struct name *)0)->field))
/* Size of the field in the structure. */
#define fldsiz(name, field) \
(sizeof(((struct name *)0)->field))
/* Address of the structure from a field. */
#define strbase(name, addr, field) \
((struct name *)((char *)(addr) - fldoff(name, field)))
#endif /* !_STRUCT_H_ */