The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/rpc/rpc_msg.h

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    1 /*      $NetBSD: rpc_msg.h,v 1.11 2000/06/02 22:57:56 fvdl Exp $        */
    2 
    3 /*-
    4  * Copyright (c) 2009, Sun Microsystems, Inc.
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without 
    8  * modification, are permitted provided that the following conditions are met:
    9  * - Redistributions of source code must retain the above copyright notice, 
   10  *   this list of conditions and the following disclaimer.
   11  * - Redistributions in binary form must reproduce the above copyright notice, 
   12  *   this list of conditions and the following disclaimer in the documentation 
   13  *   and/or other materials provided with the distribution.
   14  * - Neither the name of Sun Microsystems, Inc. nor the names of its 
   15  *   contributors may be used to endorse or promote products derived 
   16  *   from this software without specific prior written permission.
   17  * 
   18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
   19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
   21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 
   22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
   23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
   24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
   25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
   26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
   27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
   28  * POSSIBILITY OF SUCH DAMAGE.
   29  *
   30  *      from: @(#)rpc_msg.h 1.7 86/07/16 SMI
   31  *      from: @(#)rpc_msg.h     2.1 88/07/29 4.0 RPCSRC
   32  * $FreeBSD: releng/11.2/sys/rpc/rpc_msg.h 331722 2018-03-29 02:50:57Z eadler $
   33  */
   34 
   35 /*
   36  * rpc_msg.h
   37  * rpc message definition
   38  *
   39  * Copyright (C) 1984, Sun Microsystems, Inc.
   40  */
   41 
   42 #ifndef _RPC_RPC_MSG_H
   43 #define _RPC_RPC_MSG_H
   44 
   45 #define RPC_MSG_VERSION         ((uint32_t) 2)
   46 #define RPC_SERVICE_PORT        ((u_short) 2048)
   47 
   48 /*
   49  * Bottom up definition of an rpc message.
   50  * NOTE: call and reply use the same overall stuct 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                         rpcvers_t low;
   93                         rpcvers_t 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                         rpcvers_t low;
  113                         rpcvers_t 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         rpcvers_t cb_rpcvers;   /* must be equal to two */
  139         rpcprog_t cb_prog;
  140         rpcvers_t cb_vers;
  141         rpcproc_t 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         uint32_t                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 __BEGIN_DECLS
  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 *, struct rpc_msg *);
  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 *, struct rpc_msg *);
  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 *, struct rpc_msg *);
  186 
  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 enum clnt_stat _seterr_reply(struct rpc_msg *, struct rpc_err *);
  211 __END_DECLS
  212 
  213 #endif /* !_RPC_RPC_MSG_H */

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