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  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.  
  35. #include <sys/cdefs.h>
  36.  
  37. #include <rpc/xdr.h>
  38. #include <rpc/clnt.h>
  39.  
  40. /*
  41.  * rpc_msg.h
  42.  * rpc message definition
  43.  *
  44.  * Copyright (C) 1984, Sun Microsystems, Inc.
  45.  */
  46.  
  47. #define RPC_MSG_VERSION         ((unsigned long) 2)
  48. #define RPC_SERVICE_PORT        ((unsigned short) 2048)
  49.  
  50. __BEGIN_DECLS
  51.  
  52. /*
  53.  * Bottom up definition of an rpc message.
  54.  * NOTE: call and reply use the same overall struct but
  55.  * different parts of unions within it.
  56.  */
  57.  
  58. enum msg_type {
  59.         CALL=0,
  60.         REPLY=1
  61. };
  62.  
  63. enum reply_stat {
  64.         MSG_ACCEPTED=0,
  65.         MSG_DENIED=1
  66. };
  67.  
  68. enum accept_stat {
  69.         SUCCESS=0,
  70.         PROG_UNAVAIL=1,
  71.         PROG_MISMATCH=2,
  72.         PROC_UNAVAIL=3,
  73.         GARBAGE_ARGS=4,
  74.         SYSTEM_ERR=5
  75. };
  76.  
  77. enum reject_stat {
  78.         RPC_MISMATCH=0,
  79.         AUTH_ERROR=1
  80. };
  81.  
  82. /*
  83.  * Reply part of an rpc exchange
  84.  */
  85.  
  86. /*
  87.  * Reply to an rpc request that was accepted by the server.
  88.  * Note: there could be an error even though the request was
  89.  * accepted.
  90.  */
  91. struct accepted_reply {
  92.         struct opaque_auth      ar_verf;
  93.         enum accept_stat        ar_stat;
  94.         union {
  95.                 struct {
  96.                         unsigned long   low;
  97.                         unsigned long   high;
  98.                 } AR_versions;
  99.                 struct {
  100.                         char*   where;
  101.                         xdrproc_t proc;
  102.                 } AR_results;
  103.                 /* and many other null cases */
  104.         } ru;
  105. #define ar_results      ru.AR_results
  106. #define ar_vers         ru.AR_versions
  107. };
  108.  
  109. /*
  110.  * Reply to an rpc request that was rejected by the server.
  111.  */
  112. struct rejected_reply {
  113.         enum reject_stat rj_stat;
  114.         union {
  115.                 struct {
  116.                         unsigned long low;
  117.                         unsigned long high;
  118.                 } RJ_versions;
  119.                 enum auth_stat RJ_why;  /* why authentication did not work */
  120.         } ru;
  121. #define rj_vers ru.RJ_versions
  122. #define rj_why  ru.RJ_why
  123. };
  124.  
  125. /*
  126.  * Body of a reply to an rpc request.
  127.  */
  128. struct reply_body {
  129.         enum reply_stat rp_stat;
  130.         union {
  131.                 struct accepted_reply RP_ar;
  132.                 struct rejected_reply RP_dr;
  133.         } ru;
  134. #define rp_acpt ru.RP_ar
  135. #define rp_rjct ru.RP_dr
  136. };
  137.  
  138. /*
  139.  * Body of an rpc request call.
  140.  */
  141. struct call_body {
  142.         unsigned long cb_rpcvers;       /* must be equal to two */
  143.         unsigned long cb_prog;
  144.         unsigned long cb_vers;
  145.         unsigned long cb_proc;
  146.         struct opaque_auth cb_cred;
  147.         struct opaque_auth cb_verf; /* protocol specific - provided by client */
  148. };
  149.  
  150. /*
  151.  * The rpc message
  152.  */
  153. struct rpc_msg {
  154.         unsigned long                   rm_xid;
  155.         enum msg_type           rm_direction;
  156.         union {
  157.                 struct call_body RM_cmb;
  158.                 struct reply_body RM_rmb;
  159.         } ru;
  160. #define rm_call         ru.RM_cmb
  161. #define rm_reply        ru.RM_rmb
  162. };
  163. #define acpted_rply     ru.RM_rmb.ru.RP_ar
  164. #define rjcted_rply     ru.RM_rmb.ru.RP_dr
  165.  
  166.  
  167. /*
  168.  * XDR routine to handle a rpc message.
  169.  * xdr_callmsg(xdrs, cmsg)
  170.  *      XDR *xdrs;
  171.  *      struct rpc_msg *cmsg;
  172.  */
  173. extern bool_t   xdr_callmsg (XDR *__xdrs, struct rpc_msg *__cmsg) __THROW;
  174.  
  175. /*
  176.  * XDR routine to pre-serialize the static part of a rpc message.
  177.  * xdr_callhdr(xdrs, cmsg)
  178.  *      XDR *xdrs;
  179.  *      struct rpc_msg *cmsg;
  180.  */
  181. extern bool_t   xdr_callhdr (XDR *__xdrs, struct rpc_msg *__cmsg) __THROW;
  182.  
  183. /*
  184.  * XDR routine to handle a rpc reply.
  185.  * xdr_replymsg(xdrs, rmsg)
  186.  *      XDR *xdrs;
  187.  *      struct rpc_msg *rmsg;
  188.  */
  189. extern bool_t   xdr_replymsg (XDR *__xdrs, struct rpc_msg *__rmsg) __THROW;
  190.  
  191. /*
  192.  * Fills in the error part of a reply message.
  193.  * _seterr_reply(msg, error)
  194.  *      struct rpc_msg *msg;
  195.  *      struct rpc_err *error;
  196.  */
  197. extern void     _seterr_reply (struct rpc_msg *__msg, struct rpc_err *__error)
  198.      __THROW;
  199.  
  200. __END_DECLS
  201.  
  202. #endif /* rpc/rpc_msg.h */
  203.