linux/include/linux/dlm_plock.h
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   1/*
   2 * Copyright (C) 2005-2008 Red Hat, Inc.  All rights reserved.
   3 *
   4 * This copyrighted material is made available to anyone wishing to use,
   5 * modify, copy, or redistribute it subject to the terms and conditions
   6 * of the GNU General Public License v.2.
   7 */
   8
   9#ifndef __DLM_PLOCK_DOT_H__
  10#define __DLM_PLOCK_DOT_H__
  11
  12#include <linux/types.h>
  13
  14#define DLM_PLOCK_MISC_NAME             "dlm_plock"
  15
  16#define DLM_PLOCK_VERSION_MAJOR 1
  17#define DLM_PLOCK_VERSION_MINOR 2
  18#define DLM_PLOCK_VERSION_PATCH 0
  19
  20enum {
  21        DLM_PLOCK_OP_LOCK = 1,
  22        DLM_PLOCK_OP_UNLOCK,
  23        DLM_PLOCK_OP_GET,
  24};
  25
  26#define DLM_PLOCK_FL_CLOSE 1
  27
  28struct dlm_plock_info {
  29        __u32 version[3];
  30        __u8 optype;
  31        __u8 ex;
  32        __u8 wait;
  33        __u8 flags;
  34        __u32 pid;
  35        __s32 nodeid;
  36        __s32 rv;
  37        __u32 fsid;
  38        __u64 number;
  39        __u64 start;
  40        __u64 end;
  41        __u64 owner;
  42};
  43
  44#ifdef __KERNEL__
  45int dlm_posix_lock(dlm_lockspace_t *lockspace, u64 number, struct file *file,
  46                int cmd, struct file_lock *fl);
  47int dlm_posix_unlock(dlm_lockspace_t *lockspace, u64 number, struct file *file,
  48                struct file_lock *fl);
  49int dlm_posix_get(dlm_lockspace_t *lockspace, u64 number, struct file *file,
  50                struct file_lock *fl);
  51#endif /* __KERNEL__ */
  52
  53#endif
  54
  55
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