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      1 /*	$NetBSD: myflock.h,v 1.3 2020/03/18 19:05:21 christos Exp $	*/
      2 
      3 #ifndef _MYFLOCK_H_INCLUDED_
      4 #define _MYFLOCK_H_INCLUDED_
      5 
      6 /*++
      7 /* NAME
      8 /*	myflock 3h
      9 /* SUMMARY
     10 /*	lock open file
     11 /* SYNOPSIS
     12 /*	#include <myflock.h>
     13 /* DESCRIPTION
     14 /* .nf
     15 
     16  /*
     17   * External interface.
     18   */
     19 extern int WARN_UNUSED_RESULT myflock(int, int, int);
     20 
     21  /*
     22   * Lock styles.
     23   */
     24 #define MYFLOCK_STYLE_FLOCK	1
     25 #define MYFLOCK_STYLE_FCNTL	2
     26 
     27  /*
     28   * Lock request types.
     29   */
     30 #define MYFLOCK_OP_NONE		0
     31 #define MYFLOCK_OP_SHARED	1
     32 #define MYFLOCK_OP_EXCLUSIVE	2
     33 #define MYFLOCK_OP_NOWAIT	4
     34 
     35 #define MYFLOCK_OP_BITS \
     36 	(MYFLOCK_OP_SHARED | MYFLOCK_OP_EXCLUSIVE | MYFLOCK_OP_NOWAIT)
     37 
     38 /* LICENSE
     39 /* .ad
     40 /* .fi
     41 /*	The Secure Mailer license must be distributed with this software.
     42 /* AUTHOR(S)
     43 /*	Wietse Venema
     44 /*	IBM T.J. Watson Research
     45 /*	P.O. Box 704
     46 /*	Yorktown Heights, NY 10598, USA
     47 /*
     48 /*	Wietse Venema
     49 /*	Google, Inc.
     50 /*	111 8th Avenue
     51 /*	New York, NY 10011, USA
     52 /*--*/
     53 
     54 #endif
     55