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Microsoft Windows NT Build 511 (SDK Final Release) 07-24-1993

/***
*sys/locking.h - flags for locking() function
*
*	Copyright (c) 1985-1993, Microsoft Corporation. All rights reserved.
*
*Purpose:
*	This file defines the flags for the locking() function.
*	[System V]
*
****/

#ifndef _INC_LOCKING

#define _LK_UNLCK	0	/* unlock the file region */
#define _LK_LOCK	1	/* lock the file region */
#define _LK_NBLCK	2	/* non-blocking lock */
#define _LK_RLCK	3	/* lock for writing */
#define _LK_NBRLCK	4	/* non-blocking lock for writing */

#if !__STDC__
/* Non-ANSI names for compatibility */
#define LK_UNLCK	_LK_UNLCK
#define LK_LOCK 	_LK_LOCK
#define LK_NBLCK	_LK_NBLCK
#define LK_RLCK 	_LK_RLCK
#define LK_NBRLCK	_LK_NBRLCK
#endif

#define _INC_LOCKING
#endif	/* _INC_LOCKING */

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