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