1 /* 2 * rpc_msg.h 3 * rpc message definition 4 * 5 * Copyright (c) 2010, Oracle America, Inc. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions are 9 * met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials 16 * provided with the distribution. 17 * * Neither the name of the "Oracle America, Inc." nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 26 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 28 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 31 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #ifndef _RPC_MSG_H 36 #define _RPC_MSG_H 1 37 38 #include <sys/cdefs.h> 39 40 #include <rpc/xdr.h> 41 #include <rpc/clnt.h> 42 43 #define RPC_MSG_VERSION ((u_long) 2) 44 #define RPC_SERVICE_PORT ((u_short) 2048) 45 46 __BEGIN_DECLS 47 48 /* 49 * Bottom up definition of an rpc message. 50 * NOTE: call and reply use the same overall struct but 51 * different parts of unions within it. 52 */ 53 54 enum msg_type { 55 CALL=0, 56 REPLY=1 57 }; 58 59 enum reply_stat { 60 MSG_ACCEPTED=0, 61 MSG_DENIED=1 62 }; 63 64 enum accept_stat { 65 SUCCESS=0, 66 PROG_UNAVAIL=1, 67 PROG_MISMATCH=2, 68 PROC_UNAVAIL=3, 69 GARBAGE_ARGS=4, 70 SYSTEM_ERR=5 71 }; 72 73 enum reject_stat { 74 RPC_MISMATCH=0, 75 AUTH_ERROR=1 76 }; 77 78 /* 79 * Reply part of an rpc exchange 80 */ 81 82 /* 83 * Reply to an rpc request that was accepted by the server. 84 * Note: there could be an error even though the request was 85 * accepted. 86 */ 87 struct accepted_reply { 88 struct opaque_auth ar_verf; 89 enum accept_stat ar_stat; 90 union { 91 struct { 92 u_long low; 93 u_long high; 94 } AR_versions; 95 struct { 96 caddr_t where; 97 xdrproc_t proc; 98 } AR_results; 99 /* and many other null cases */ 100 } ru; 101 #define ar_results ru.AR_results 102 #define ar_vers ru.AR_versions 103 }; 104 105 /* 106 * Reply to an rpc request that was rejected by the server. 107 */ 108 struct rejected_reply { 109 enum reject_stat rj_stat; 110 union { 111 struct { 112 u_long low; 113 u_long high; 114 } RJ_versions; 115 enum auth_stat RJ_why; /* why authentication did not work */ 116 } ru; 117 #define rj_vers ru.RJ_versions 118 #define rj_why ru.RJ_why 119 }; 120 121 /* 122 * Body of a reply to an rpc request. 123 */ 124 struct reply_body { 125 enum reply_stat rp_stat; 126 union { 127 struct accepted_reply RP_ar; 128 struct rejected_reply RP_dr; 129 } ru; 130 #define rp_acpt ru.RP_ar 131 #define rp_rjct ru.RP_dr 132 }; 133 134 /* 135 * Body of an rpc request call. 136 */ 137 struct call_body { 138 u_long cb_rpcvers; /* must be equal to two */ 139 u_long cb_prog; 140 u_long cb_vers; 141 u_long cb_proc; 142 struct opaque_auth cb_cred; 143 struct opaque_auth cb_verf; /* protocol specific - provided by client */ 144 }; 145 146 /* 147 * The rpc message 148 */ 149 struct rpc_msg { 150 u_long rm_xid; 151 enum msg_type rm_direction; 152 union { 153 struct call_body RM_cmb; 154 struct reply_body RM_rmb; 155 } ru; 156 #define rm_call ru.RM_cmb 157 #define rm_reply ru.RM_rmb 158 }; 159 #define acpted_rply ru.RM_rmb.ru.RP_ar 160 #define rjcted_rply ru.RM_rmb.ru.RP_dr 161 162 163 /* 164 * XDR routine to handle a rpc message. 165 * xdr_callmsg(xdrs, cmsg) 166 * XDR *xdrs; 167 * struct rpc_msg *cmsg; 168 */ 169 extern bool_t xdr_callmsg (XDR *__xdrs, struct rpc_msg *__cmsg) __THROW; 170 171 /* 172 * XDR routine to pre-serialize the static part of a rpc message. 173 * xdr_callhdr(xdrs, cmsg) 174 * XDR *xdrs; 175 * struct rpc_msg *cmsg; 176 */ 177 extern bool_t xdr_callhdr (XDR *__xdrs, struct rpc_msg *__cmsg) __THROW; 178 179 /* 180 * XDR routine to handle a rpc reply. 181 * xdr_replymsg(xdrs, rmsg) 182 * XDR *xdrs; 183 * struct rpc_msg *rmsg; 184 */ 185 extern bool_t xdr_replymsg (XDR *__xdrs, struct rpc_msg *__rmsg) __THROW; 186 187 /* 188 * Fills in the error part of a reply message. 189 * _seterr_reply(msg, error) 190 * struct rpc_msg *msg; 191 * struct rpc_err *error; 192 */ 193 extern void _seterr_reply (struct rpc_msg *__msg, struct rpc_err *__error) 194 __THROW; 195 196 __END_DECLS 197 198 #endif /* rpc/rpc_msg.h */ 199
