nlm.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * linux/include/linux/lockd/nlm.h
 4 *
 5 * Declarations for the Network Lock Manager protocol.
 6 *
 7 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
 8 */
 9
10#ifndef LINUX_LOCKD_NLM_H
11#define LINUX_LOCKD_NLM_H
12
13
14/* Maximum file offset in file_lock.fl_end */
15# define NLM_OFFSET_MAX		((s32) 0x7fffffff)
16# define NLM4_OFFSET_MAX	((s64) ((~(u64)0) >> 1))
17
18/* Return states for NLM */
19enum {
20	NLM_LCK_GRANTED			= 0,
21	NLM_LCK_DENIED			= 1,
22	NLM_LCK_DENIED_NOLOCKS		= 2,
23	NLM_LCK_BLOCKED			= 3,
24	NLM_LCK_DENIED_GRACE_PERIOD	= 4,
25#ifdef CONFIG_LOCKD_V4
26	NLM_DEADLCK			= 5,
27	NLM_ROFS			= 6,
28	NLM_STALE_FH			= 7,
29	NLM_FBIG			= 8,
30	NLM_FAILED			= 9,
31#endif
32};
33
34#define NLM_PROGRAM		100021
35
36#define NLMPROC_NULL		0
37#define NLMPROC_TEST		1
38#define NLMPROC_LOCK		2
39#define NLMPROC_CANCEL		3
40#define NLMPROC_UNLOCK		4
41#define NLMPROC_GRANTED		5
42#define NLMPROC_TEST_MSG	6
43#define NLMPROC_LOCK_MSG	7
44#define NLMPROC_CANCEL_MSG	8
45#define NLMPROC_UNLOCK_MSG	9
46#define NLMPROC_GRANTED_MSG	10
47#define NLMPROC_TEST_RES	11
48#define NLMPROC_LOCK_RES	12
49#define NLMPROC_CANCEL_RES	13
50#define NLMPROC_UNLOCK_RES	14
51#define NLMPROC_GRANTED_RES	15
52#define NLMPROC_NSM_NOTIFY	16		/* statd callback */
53#define NLMPROC_SHARE		20
54#define NLMPROC_UNSHARE		21
55#define NLMPROC_NM_LOCK		22
56#define NLMPROC_FREE_ALL	23
57
58#endif /* LINUX_LOCKD_NLM_H */