1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * XDR types for the NLM protocol 4 * 5 * Copyright (C) 1996 Olaf Kirch <okir@monad.swb.de> 6 */ 7 8 #ifndef _LOCKD_XDR_H 9 #define _LOCKD_XDR_H 10 11 #include <linux/fs.h> 12 #include <linux/filelock.h> 13 #include <linux/nfs.h> 14 #include <linux/sunrpc/xdr.h> 15 16 #define SM_MAXSTRLEN 1024 17 #define SM_PRIV_SIZE 16 18 19 struct nsm_private { 20 unsigned char data[SM_PRIV_SIZE]; 21 }; 22 23 #define NLM_MAXCOOKIELEN 32 24 #define NLM_MAXSTRLEN 1024 25 26 #define nlm_granted cpu_to_be32(NLM_LCK_GRANTED) 27 #define nlm_lck_denied cpu_to_be32(NLM_LCK_DENIED) 28 #define nlm_lck_denied_nolocks cpu_to_be32(NLM_LCK_DENIED_NOLOCKS) 29 #define nlm_lck_blocked cpu_to_be32(NLM_LCK_BLOCKED) 30 #define nlm_lck_denied_grace_period cpu_to_be32(NLM_LCK_DENIED_GRACE_PERIOD) 31 32 /* Lock info passed via NLM */ 33 struct lockd_lock { 34 char * caller; 35 unsigned int len; /* length of "caller" */ 36 struct nfs_fh fh; 37 struct xdr_netobj oh; 38 u32 svid; 39 u64 lock_start; 40 u64 lock_len; 41 struct file_lock fl; 42 }; 43 44 /* 45 * NLM cookies. Technically they can be 1K, but Linux only uses 8 bytes. 46 * FreeBSD uses 16, Apple Mac OS X 10.3 uses 20. Therefore we set it to 47 * 32 bytes. 48 */ 49 50 struct lockd_cookie { 51 unsigned char data[NLM_MAXCOOKIELEN]; 52 unsigned int len; 53 }; 54 55 /* 56 * Generic lockd arguments for all but sm_notify 57 */ 58 struct lockd_args { 59 struct lockd_cookie cookie; 60 struct lockd_lock lock; 61 u32 block; 62 u32 reclaim; 63 u32 state; 64 }; 65 66 /* 67 * Generic lockd result 68 */ 69 struct lockd_res { 70 struct lockd_cookie cookie; 71 __be32 status; 72 struct lockd_lock lock; 73 }; 74 75 /* 76 * statd callback when client has rebooted 77 */ 78 struct lockd_reboot { 79 char *mon; 80 unsigned int len; 81 u32 state; 82 struct nsm_private priv; 83 }; 84 85 #endif /* _LOCKD_XDR_H */ 86