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 SM_MAXSTRLEN 1024 17 #define SM_PRIV_SIZE 16 18 19 struct nsm_private { 20 unsigned char data[SM_PRIV_SIZE]; 21 }; 22 23 struct svc_rqst; 24 25 #define NLM_MAXCOOKIELEN 32 26 #define NLM_MAXSTRLEN 1024 27 28 #define nlm_granted cpu_to_be32(NLM_LCK_GRANTED) 29 #define nlm_lck_denied cpu_to_be32(NLM_LCK_DENIED) 30 #define nlm_lck_denied_nolocks cpu_to_be32(NLM_LCK_DENIED_NOLOCKS) 31 #define nlm_lck_blocked cpu_to_be32(NLM_LCK_BLOCKED) 32 #define nlm_lck_denied_grace_period cpu_to_be32(NLM_LCK_DENIED_GRACE_PERIOD) 33 34 #define nlm_drop_reply cpu_to_be32(30000) 35 36 /* Lock info passed via NLM */ 37 struct nlm_lock { 38 char * caller; 39 unsigned int len; /* length of "caller" */ 40 struct nfs_fh fh; 41 struct xdr_netobj oh; 42 u32 svid; 43 struct file_lock fl; 44 }; 45 46 /* 47 * NLM cookies. Technically they can be 1K, but Linux only uses 8 bytes. 48 * FreeBSD uses 16, Apple Mac OS X 10.3 uses 20. Therefore we set it to 49 * 32 bytes. 50 */ 51 52 struct nlm_cookie 53 { 54 unsigned char data[NLM_MAXCOOKIELEN]; 55 unsigned int len; 56 }; 57 58 /* 59 * Generic lockd arguments for all but sm_notify 60 */ 61 struct nlm_args { 62 struct nlm_cookie cookie; 63 struct nlm_lock lock; 64 u32 block; 65 u32 reclaim; 66 u32 state; 67 u32 monitor; 68 u32 fsm_access; 69 u32 fsm_mode; 70 }; 71 72 typedef struct nlm_args nlm_args; 73 74 /* 75 * Generic lockd result 76 */ 77 struct nlm_res { 78 struct nlm_cookie cookie; 79 __be32 status; 80 struct nlm_lock lock; 81 }; 82 83 /* 84 * statd callback when client has rebooted 85 */ 86 struct nlm_reboot { 87 char *mon; 88 unsigned int len; 89 u32 state; 90 struct nsm_private priv; 91 }; 92 93 /* 94 * Contents of statd callback when monitored host rebooted 95 */ 96 #define NLMSVC_XDRSIZE sizeof(struct nlm_args) 97 98 int nlmsvc_decode_testargs(struct svc_rqst *, __be32 *, struct nlm_args *); 99 int nlmsvc_encode_testres(struct svc_rqst *, __be32 *, struct nlm_res *); 100 int nlmsvc_decode_lockargs(struct svc_rqst *, __be32 *, struct nlm_args *); 101 int nlmsvc_decode_cancargs(struct svc_rqst *, __be32 *, struct nlm_args *); 102 int nlmsvc_decode_unlockargs(struct svc_rqst *, __be32 *, struct nlm_args *); 103 int nlmsvc_encode_res(struct svc_rqst *, __be32 *, struct nlm_res *); 104 int nlmsvc_decode_res(struct svc_rqst *, __be32 *, struct nlm_res *); 105 int nlmsvc_encode_void(struct svc_rqst *, __be32 *, void *); 106 int nlmsvc_decode_void(struct svc_rqst *, __be32 *, void *); 107 int nlmsvc_decode_shareargs(struct svc_rqst *, __be32 *, struct nlm_args *); 108 int nlmsvc_encode_shareres(struct svc_rqst *, __be32 *, struct nlm_res *); 109 int nlmsvc_decode_notify(struct svc_rqst *, __be32 *, struct nlm_args *); 110 int nlmsvc_decode_reboot(struct svc_rqst *, __be32 *, struct nlm_reboot *); 111 /* 112 int nlmclt_encode_testargs(struct rpc_rqst *, u32 *, struct nlm_args *); 113 int nlmclt_encode_lockargs(struct rpc_rqst *, u32 *, struct nlm_args *); 114 int nlmclt_encode_cancargs(struct rpc_rqst *, u32 *, struct nlm_args *); 115 int nlmclt_encode_unlockargs(struct rpc_rqst *, u32 *, struct nlm_args *); 116 */ 117 118 #endif /* LOCKD_XDR_H */ 119