myflock.h

[詳解]

#ifndef _MYFLOCK_H_INCLUDED_
#define _MYFLOCK_H_INCLUDED_

/*++
/* NAME
/*  myflock 3h
/* SUMMARY
/*  lock open file
/* SYNOPSIS
/*  #include <myflock.h>
/* DESCRIPTION
/* .nf

 /*
  * External interface.
  */
extern int WARN_UNUSED_RESULT myflock(int, int, int);

 /*
  * Lock styles.
  */
#define MYFLOCK_STYLE_FLOCK 1
#define MYFLOCK_STYLE_FCNTL 2

 /*
  * Lock request types.
  */
#define MYFLOCK_OP_NONE     0
#define MYFLOCK_OP_SHARED   1
#define MYFLOCK_OP_EXCLUSIVE    2
#define MYFLOCK_OP_NOWAIT   4

#define MYFLOCK_OP_BITS \
    (MYFLOCK_OP_SHARED | MYFLOCK_OP_EXCLUSIVE | MYFLOCK_OP_NOWAIT)

/* LICENSE
/* .ad
/* .fi
/*  The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/*  Wietse Venema
/*  IBM T.J. Watson Research
/*  P.O. Box 704
/*  Yorktown Heights, NY 10598, USA
/*
/*  Wietse Venema
/*  Google, Inc.
/*  111 8th Avenue
/*  New York, NY 10011, USA
/*--*/

#endif