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/* SPDX-License-Identifier: GPL-2.0 */
/*
 * linux/include/linux/lockd/nlm.h
 *
 * Declarations for the Network Lock Manager protocol.
 *
 * Copyright (C) 1996, Olaf Kirch <[email protected]>
 */

#ifndef LINUX_LOCKD_NLM_H
#define LINUX_LOCKD_NLM_H


/* Maximum file offset in file_lock.fl_end */
# define NLM_OFFSET_MAX		((s32) 0x7fffffff)
# define NLM4_OFFSET_MAX	((s64) ((~(u64)0) >> 1))

/* Return states for NLM */
enum {
	NLM_LCK_GRANTED			= 0,
	NLM_LCK_DENIED			= 1,
	NLM_LCK_DENIED_NOLOCKS		= 2,
	NLM_LCK_BLOCKED			= 3,
	NLM_LCK_DENIED_GRACE_PERIOD	= 4,
#ifdef CONFIG_LOCKD_V4
	NLM_DEADLCK			= 5,
	NLM_ROFS			= 6,
	NLM_STALE_FH			= 7,
	NLM_FBIG			= 8,
	NLM_FAILED			= 9,
#endif
};

#define NLM_PROGRAM		100021

#define NLMPROC_NULL		0
#define NLMPROC_TEST		1
#define NLMPROC_LOCK		2
#define NLMPROC_CANCEL		3
#define NLMPROC_UNLOCK		4
#define NLMPROC_GRANTED		5
#define NLMPROC_TEST_MSG	6
#define NLMPROC_LOCK_MSG	7
#define NLMPROC_CANCEL_MSG	8
#define NLMPROC_UNLOCK_MSG	9
#define NLMPROC_GRANTED_MSG	10
#define NLMPROC_TEST_RES	11
#define NLMPROC_LOCK_RES	12
#define NLMPROC_CANCEL_RES	13
#define NLMPROC_UNLOCK_RES	14
#define NLMPROC_GRANTED_RES	15
#define NLMPROC_NSM_NOTIFY	16		/* statd callback */
#define NLMPROC_SHARE		20
#define NLMPROC_UNSHARE		21
#define NLMPROC_NM_LOCK		22
#define NLMPROC_FREE_ALL	23

#endif /* LINUX_LOCKD_NLM_H */