sunrpc/rpc/rpc_msg.h

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