LXR linux/include/linux/lockd/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 */
  59