include/rpc/rpc_msg.h

   1 /*
   2  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   3  * unrestricted use provided that this legend is included on all tape
   4  * media and as a part of the software program in whole or part.  Users
   5  * may copy or modify Sun RPC without charge, but are not authorized
   6  * to license or distribute it to anyone else except as part of a product or
   7  * program developed by the user.
   8  *
   9  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  10  * WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  11  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  12  *
  13  * Sun RPC is provided with no support and without any obligation on the
  14  * part of Sun Microsystems, Inc. to assist in its use, correction,
  15  * modification or enhancement.
  16  *
  17  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  18  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  19  * OR ANY PART THEREOF.
  20  *
  21  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  22  * or profits or other special, indirect and consequential damages, even if
  23  * Sun has been advised of the possibility of such damages.
  24  *
  25  * Sun Microsystems, Inc.
  26  * 2550 Garcia Avenue
  27  * Mountain View, California  94043
  28  *
  29  *      from: @(#)rpc_msg.h 1.7 86/07/16 SMI
  30  *      from: @(#)rpc_msg.h     2.1 88/07/29 4.0 RPCSRC
  31  * $NetBSD: rpc_msg.h,v 1.11 2000/06/02 22:57:56 fvdl Exp $
  32  * $FreeBSD: src/include/rpc/rpc_msg.h,v 1.15 2003/01/01 18:48:42 schweikh Exp $
  33  * $DragonFly: src/include/rpc/rpc_msg.h,v 1.4 2007/12/04 20:59:15 swildner Exp $
  34  */
  35
  36 /*
  37  * rpc_msg.h
  38  * rpc message definition
  39  *
  40  * Copyright (C) 1984, Sun Microsystems, Inc.
  41  */
  42
  43 #ifndef _RPC_RPC_MSG_H_
  44 #define _RPC_RPC_MSG_H_
  45
  46 #define RPC_MSG_VERSION         ((u_int32_t) 2)
  47 #define RPC_SERVICE_PORT        ((u_short) 2048)
  48
  49 /*
  50  * Bottom up definition of an rpc message.
  51  * NOTE: call and reply use the same overall stuct but
  52  * different parts of unions within it.
  53  */
  54
  55 enum msg_type {
  56         CALL=0,
  57         REPLY=1
  58 };
  59
  60 enum reply_stat {
  61         MSG_ACCEPTED=0,
  62         MSG_DENIED=1
  63 };
  64
  65 enum accept_stat {
  66         SUCCESS=0,
  67         PROG_UNAVAIL=1,
  68         PROG_MISMATCH=2,
  69         PROC_UNAVAIL=3,
  70         GARBAGE_ARGS=4,
  71         SYSTEM_ERR=5
  72 };
  73
  74 enum reject_stat {
  75         RPC_MISMATCH=0,
  76         AUTH_ERROR=1
  77 };
  78
  79 /*
  80  * Reply part of an rpc exchange
  81  */
  82
  83 /*
  84  * Reply to an rpc request that was accepted by the server.
  85  * Note: there could be an error even though the request was
  86  * accepted.
  87  */
  88 struct accepted_reply {
  89         struct opaque_auth      ar_verf;
  90         enum accept_stat        ar_stat;
  91         union {
  92                 struct {
  93                         rpcvers_t low;
  94                         rpcvers_t high;
  95                 } AR_versions;
  96                 struct {
  97                         caddr_t where;
  98                         xdrproc_t proc;
  99                 } AR_results;
 100                 /* and many other null cases */
 101         } ru;
 102 #define ar_results      ru.AR_results
 103 #define ar_vers         ru.AR_versions
 104 };
 105
 106 /*
 107  * Reply to an rpc request that was rejected by the server.
 108  */
 109 struct rejected_reply {
 110         enum reject_stat rj_stat;
 111         union {
 112                 struct {
 113                         rpcvers_t low;
 114                         rpcvers_t high;
 115                 } RJ_versions;
 116                 enum auth_stat RJ_why;  /* why authentication did not work */
 117         } ru;
 118 #define rj_vers ru.RJ_versions
 119 #define rj_why  ru.RJ_why
 120 };
 121
 122 /*
 123  * Body of a reply to an rpc request.
 124  */
 125 struct reply_body {
 126         enum reply_stat rp_stat;
 127         union {
 128                 struct accepted_reply RP_ar;
 129                 struct rejected_reply RP_dr;
 130         } ru;
 131 #define rp_acpt ru.RP_ar
 132 #define rp_rjct ru.RP_dr
 133 };
 134
 135 /*
 136  * Body of an rpc request call.
 137  */
 138 struct call_body {
 139         rpcvers_t cb_rpcvers;   /* must be equal to two */
 140         rpcprog_t cb_prog;
 141         rpcvers_t cb_vers;
 142         rpcproc_t cb_proc;
 143         struct opaque_auth cb_cred;
 144         struct opaque_auth cb_verf; /* protocol specific - provided by client */
 145 };
 146
 147 /*
 148  * The rpc message
 149  */
 150 struct rpc_msg {
 151         u_int32_t               rm_xid;
 152         enum msg_type           rm_direction;
 153         union {
 154                 struct call_body RM_cmb;
 155                 struct reply_body RM_rmb;
 156         } ru;
 157 #define rm_call         ru.RM_cmb
 158 #define rm_reply        ru.RM_rmb
 159 };
 160 #define acpted_rply     ru.RM_rmb.ru.RP_ar
 161 #define rjcted_rply     ru.RM_rmb.ru.RP_dr
 162
 163 __BEGIN_DECLS
 164 /*
 165  * XDR routine to handle a rpc message.
 166  * xdr_callmsg(xdrs, cmsg)
 167  *      XDR *xdrs;
 168  *      struct rpc_msg *cmsg;
 169  */
 170 extern bool_t   xdr_callmsg(XDR *, struct rpc_msg *);
 171
 172 /*
 173  * XDR routine to pre-serialize the static part of a rpc message.
 174  * xdr_callhdr(xdrs, cmsg)
 175  *      XDR *xdrs;
 176  *      struct rpc_msg *cmsg;
 177  */
 178 extern bool_t   xdr_callhdr(XDR *, struct rpc_msg *);
 179
 180 /*
 181  * XDR routine to handle a rpc reply.
 182  * xdr_replymsg(xdrs, rmsg)
 183  *      XDR *xdrs;
 184  *      struct rpc_msg *rmsg;
 185  */
 186 extern bool_t   xdr_replymsg(XDR *, struct rpc_msg *);
 187
 188 /*
 189  * XDR routine to handle an accepted rpc reply.
 190  * xdr_accepted_reply(xdrs, rej)
 191  *      XDR *xdrs;
 192  *      struct accepted_reply *rej;
 193  */
 194 extern bool_t   xdr_accepted_reply(XDR *, struct accepted_reply *);
 195
 196 /*
 197  * XDR routine to handle a rejected rpc reply.
 198  * xdr_rejected_reply(xdrs, rej)
 199  *      XDR *xdrs;
 200  *      struct rejected_reply *rej;
 201  */
 202 extern bool_t   xdr_rejected_reply(XDR *, struct rejected_reply *);
 203
 204 /*
 205  * Fills in the error part of a reply message.
 206  * _seterr_reply(msg, error)
 207  *      struct rpc_msg *msg;
 208  *      struct rpc_err *error;
 209  */
 210 extern void     _seterr_reply(struct rpc_msg *, struct rpc_err *);
 211 __END_DECLS
 212
 213 #endif /* !_RPC_RPC_MSG_H_ */