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 u32 svid; 32 struct file_lock fl; 33 }; 34 35 /* 36 * NLM cookies. Technically they can be 1K, but Linux only uses 8 bytes. 37 * FreeBSD uses 16, Apple Mac OS X 10.3 uses 20. Therefore we set it to 38 * 32 bytes. 39 */ 40 41 struct nlm_cookie 42 { 43 unsigned char data[NLM_MAXCOOKIELEN]; 44 unsigned int len; 45 }; 46 47 /* 48 * Generic lockd arguments for all but sm_notify 49 */ 50 struct nlm_args { 51 struct nlm_cookie cookie; 52 struct nlm_lock lock; 53 u32 block; 54 u32 reclaim; 55 u32 state; 56 u32 monitor; 57 u32 fsm_access; 58 u32 fsm_mode; 59 }; 60 61 typedef struct nlm_args nlm_args; 62 63 /* 64 * Generic lockd result 65 */ 66 struct nlm_res { 67 struct nlm_cookie cookie; 68 u32 status; 69 struct nlm_lock lock; 70 }; 71 72 /* 73 * statd callback when client has rebooted 74 */ 75 struct nlm_reboot { 76 char * mon; 77 int len; 78 u32 state; 79 u32 addr; 80 u32 vers; 81 u32 proto; 82 }; 83 84 /* 85 * Contents of statd callback when monitored host rebooted 86 */ 87 #define NLMSVC_XDRSIZE sizeof(struct nlm_args) 88 89 int nlmsvc_decode_testargs(struct svc_rqst *, u32 *, struct nlm_args *); 90 int nlmsvc_encode_testres(struct svc_rqst *, u32 *, struct nlm_res *); 91 int nlmsvc_decode_lockargs(struct svc_rqst *, u32 *, struct nlm_args *); 92 int nlmsvc_decode_cancargs(struct svc_rqst *, u32 *, struct nlm_args *); 93 int nlmsvc_decode_unlockargs(struct svc_rqst *, u32 *, struct nlm_args *); 94 int nlmsvc_encode_res(struct svc_rqst *, u32 *, struct nlm_res *); 95 int nlmsvc_decode_res(struct svc_rqst *, u32 *, struct nlm_res *); 96 int nlmsvc_encode_void(struct svc_rqst *, u32 *, void *); 97 int nlmsvc_decode_void(struct svc_rqst *, u32 *, void *); 98 int nlmsvc_decode_shareargs(struct svc_rqst *, u32 *, struct nlm_args *); 99 int nlmsvc_encode_shareres(struct svc_rqst *, u32 *, struct nlm_res *); 100 int nlmsvc_decode_notify(struct svc_rqst *, u32 *, struct nlm_args *); 101 int nlmsvc_decode_reboot(struct svc_rqst *, u32 *, struct nlm_reboot *); 102 /* 103 int nlmclt_encode_testargs(struct rpc_rqst *, u32 *, struct nlm_args *); 104 int nlmclt_encode_lockargs(struct rpc_rqst *, u32 *, struct nlm_args *); 105 int nlmclt_encode_cancargs(struct rpc_rqst *, u32 *, struct nlm_args *); 106 int nlmclt_encode_unlockargs(struct rpc_rqst *, u32 *, struct nlm_args *); 107 */ 108 109 #endif /* LOCKD_XDR_H */ 110