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 */
59