1 /* 2 * linux/include/linux/lockd/xdr.h 3 * 4 * XDR types for the NLM protocol 5 * 6 * Copyright (C) 1996 Olaf Kirch <okir@monad.swb.de> 7 */ 8 9 #ifndef LOCKD_XDR_H 10 #define LOCKD_XDR_H 11 12 #include <linux/fs.h> 13 #include <linux/nfs.h> 14 #include <linux/sunrpc/xdr.h> 15 16 #define NLM_MAXCOOKIELEN 32 17 #define NLM_MAXSTRLEN 1024 18 19 #define nlm_granted __constant_htonl(NLM_LCK_GRANTED) 20 #define nlm_lck_denied __constant_htonl(NLM_LCK_DENIED) 21 #define nlm_lck_denied_nolocks __constant_htonl(NLM_LCK_DENIED_NOLOCKS) 22 #define nlm_lck_blocked __constant_htonl(NLM_LCK_BLOCKED) 23 #define nlm_lck_denied_grace_period __constant_htonl(NLM_LCK_DENIED_GRACE_PERIOD) 24 25 /* Lock info passed via NLM */ 26 struct nlm_lock { 27 char * caller; 28 int len; /* length of "caller" */ 29 struct nfs_fh fh; 30 struct xdr_netobj oh; 31 struct file_lock fl; 32 }; 33 34 /* 35 * NLM cookies. Technically they can be 1K, but Linux only uses 8 bytes. 36 * FreeBSD uses 16, Apple Mac OS X 10.3 uses 20. Therefore we set it to 37 * 32 bytes. 38 */ 39 40 struct nlm_cookie 41 { 42 unsigned char data[NLM_MAXCOOKIELEN]; 43 unsigned int len; 44 }; 45 46 /* 47 * Generic lockd arguments for all but sm_notify 48 */ 49 struct nlm_args { 50 struct nlm_cookie cookie; 51 struct nlm_lock lock; 52 u32 block; 53 u32 reclaim; 54 u32 state; 55 u32 monitor; 56 u32 fsm_access; 57 u32 fsm_mode; 58 }; 59 60 typedef struct nlm_args nlm_args; 61 62 /* 63 * Generic lockd result 64 */ 65 struct nlm_res { 66 struct nlm_cookie cookie; 67 u32 status; 68 struct nlm_lock lock; 69 }; 70 71 /* 72 * statd callback when client has rebooted 73 */ 74 struct nlm_reboot { 75 char * mon; 76 int len; 77 u32 state; 78 u32 addr; 79 u32 vers; 80 u32 proto; 81 }; 82 83 /* 84 * Contents of statd callback when monitored host rebooted 85 */ 86 #define NLMSVC_XDRSIZE sizeof(struct nlm_args) 87 88 int nlmsvc_decode_testargs(struct svc_rqst *, u32 *, struct nlm_args *); 89 int nlmsvc_encode_testres(struct svc_rqst *, u32 *, struct nlm_res *); 90 int nlmsvc_decode_lockargs(struct svc_rqst *, u32 *, struct nlm_args *); 91 int nlmsvc_decode_cancargs(struct svc_rqst *, u32 *, struct nlm_args *); 92 int nlmsvc_decode_unlockargs(struct svc_rqst *, u32 *, struct nlm_args *); 93 int nlmsvc_encode_res(struct svc_rqst *, u32 *, struct nlm_res *); 94 int nlmsvc_decode_res(struct svc_rqst *, u32 *, struct nlm_res *); 95 int nlmsvc_encode_void(struct svc_rqst *, u32 *, void *); 96 int nlmsvc_decode_void(struct svc_rqst *, u32 *, void *); 97 int nlmsvc_decode_shareargs(struct svc_rqst *, u32 *, struct nlm_args *); 98 int nlmsvc_encode_shareres(struct svc_rqst *, u32 *, struct nlm_res *); 99 int nlmsvc_decode_notify(struct svc_rqst *, u32 *, struct nlm_args *); 100 int nlmsvc_decode_reboot(struct svc_rqst *, u32 *, struct nlm_reboot *); 101 /* 102 int nlmclt_encode_testargs(struct rpc_rqst *, u32 *, struct nlm_args *); 103 int nlmclt_encode_lockargs(struct rpc_rqst *, u32 *, struct nlm_args *); 104 int nlmclt_encode_cancargs(struct rpc_rqst *, u32 *, struct nlm_args *); 105 int nlmclt_encode_unlockargs(struct rpc_rqst *, u32 *, struct nlm_args *); 106 */ 107 108 #endif /* LOCKD_XDR_H */ 109