reactos/posix/include/psx/safeobj.h

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/* $Id: safeobj.h,v 1.4 2002/10/29 04:45:15 rex Exp $
*/
/*
* psx/safeobj.h
*
* types and definitions for safe checking of user-provided objects
*
* This file is part of the ReactOS Operating System.
*
* Contributors:
* Created by KJK::Hyperion <noog@libero.it>
*
* THIS SOFTWARE IS NOT COPYRIGHTED
*
* This source code is offered for use in the public domain. You may
* use, modify or distribute it freely.
*
* This code is distributed in the hope that it will be useful but
* WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
* DISCLAMED. This includes but is not limited to warranties of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
*/
#ifndef __PSX_SAFEOBJ_H_INCLUDED__
#define __PSX_SAFEOBJ_H_INCLUDED__
/* INCLUDES */
#include <inttypes.h>
/* OBJECTS */
/* TYPES */
typedef uint32_t __magic_t;
/* CONSTANTS */
/* PROTOTYPES */
int __safeobj_validate(void *, __magic_t);
/* MACROS */
/* builds a magic number from 4 characters */
#define MAGIC(a,b,c,d) ( \
(((uint32_t)(uint8_t)(a)) << 24) | \
(((uint32_t)(uint8_t)(b)) << 16) | \
(((uint32_t)(uint8_t)(c)) << 8) | \
(((uint32_t)(uint8_t)(d)) << 0) \
)
/* retrieves a comma-separated list of the 4 characters in a magic number */
#define MAGIC_DECOMPOSE(m) \
((uint8_t)(m >> 24)), \
((uint8_t)(m >> 16)), \
((uint8_t)(m >> 8)), \
((uint8_t)(m >> 0))
#endif /* __PSX_SAFEOBJ_H_INCLUDED__ */
/* EOF */