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59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/* $Id: safeobj.h,v 1.2 2002/02/20 09:17:55 hyperion Exp $
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*/
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/*
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* psx/safeobj.h
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*
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* types and definitions for safe checking of user-provided objects
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*
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* This file is part of the ReactOS Operating System.
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*
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* Contributors:
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* Created by KJK::Hyperion <noog@libero.it>
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*
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* THIS SOFTWARE IS NOT COPYRIGHTED
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*
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* This source code is offered for use in the public domain. You may
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* use, modify or distribute it freely.
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*
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* This code is distributed in the hope that it will be useful but
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* WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
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* DISCLAMED. This includes but is not limited to warranties of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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*/
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#ifndef __PSX_SAFEOBJ_H_INCLUDED__
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#define __PSX_SAFEOBJ_H_INCLUDED__
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/* INCLUDES */
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#include <inttypes.h>
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/* OBJECTS */
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/* TYPES */
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typedef uint32_t __magic_t;
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/* CONSTANTS */
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/* PROTOTYPES */
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int __safeobj_validate(void *, __magic_t);
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/* MACROS */
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/* builds a magic number from 4 characters */
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#define MAGIC(a,b,c,d) ( \
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(((uint32_t)(uint8_t)(a)) << 24) | \
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(((uint32_t)(uint8_t)(b)) << 16) | \
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(((uint32_t)(uint8_t)(c)) << 8) | \
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(((uint32_t)(uint8_t)(d)) << 0) \
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)
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/* retrieves a comma-separated list of the 4 characters in a magic number */
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#define MAGIC_DECOMPOSE(m) \
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((uint8_t)(m >> 24)), \
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((uint8_t)(m >> 16)), \
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((uint8_t)(m >> 8)), \
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((uint8_t)(m >> 0))
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#endif /* __PSX_SAFEOBJ_H_INCLUDED__ */
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/* EOF */
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