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 */
  19 enum {
  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 */