dlm_plock.h 1.14 KB
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/*
 * 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__

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#include <linux/types.h>

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#define DLM_PLOCK_MISC_NAME		"dlm_plock"

#define DLM_PLOCK_VERSION_MAJOR	1
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#define DLM_PLOCK_VERSION_MINOR	2
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#define DLM_PLOCK_VERSION_PATCH	0

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

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#define DLM_PLOCK_FL_CLOSE 1

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struct dlm_plock_info {
	__u32 version[3];
	__u8 optype;
	__u8 ex;
	__u8 wait;
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	__u8 flags;
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	__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