root/include/linux/dlm_plock.h

INCLUDED FROM

/*
 * Copyright (C) 2005-2008 Red Hat, Inc.  All rights reserved.
 *
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU General Public License v.2.
 */

#ifndef __DLM_PLOCK_DOT_H__
#define __DLM_PLOCK_DOT_H__

#define DLM_PLOCK_MISC_NAME             "dlm_plock"

#define DLM_PLOCK_VERSION_MAJOR 1
#define DLM_PLOCK_VERSION_MINOR 1
#define DLM_PLOCK_VERSION_PATCH 0

enum {
        DLM_PLOCK_OP_LOCK = 1,
        DLM_PLOCK_OP_UNLOCK,
        DLM_PLOCK_OP_GET,
};

struct dlm_plock_info {
        __u32 version[3];
        __u8 optype;
        __u8 ex;
        __u8 wait;
        __u8 pad;
        __u32 pid;
        __s32 nodeid;
        __s32 rv;
        __u32 fsid;
        __u64 number;
        __u64 start;
        __u64 end;
        __u64 owner;
};

#ifdef __KERNEL__
int dlm_posix_lock(dlm_lockspace_t *lockspace, u64 number, struct file *file,
                int cmd, struct file_lock *fl);
int dlm_posix_unlock(dlm_lockspace_t *lockspace, u64 number, struct file *file,
                struct file_lock *fl);
int dlm_posix_get(dlm_lockspace_t *lockspace, u64 number, struct file *file,
                struct file_lock *fl);
#endif /* __KERNEL__ */

#endif