1/* $NetBSD: rpc_msg.h,v 1.15 2006/02/25 00:58:34 wiz Exp $ */
2
3/*
4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
5 * unrestricted use provided that this legend is included on all tape
6 * media and as a part of the software program in whole or part. Users
7 * may copy or modify Sun RPC without charge, but are not authorized
8 * to license or distribute it to anyone else except as part of a product or
9 * program developed by the user.
10 *
11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
14 *
15 * Sun RPC is provided with no support and without any obligation on the
16 * part of Sun Microsystems, Inc. to assist in its use, correction,
17 * modification or enhancement.
18 *
19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
21 * OR ANY PART THEREOF.
22 *
23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
24 * or profits or other special, indirect and consequential damages, even if
25 * Sun has been advised of the possibility of such damages.
26 *
27 * Sun Microsystems, Inc.
28 * 2550 Garcia Avenue
29 * Mountain View, California 94043
30 *
31 * from: @(#)rpc_msg.h 1.7 86/07/16 SMI
32 * @(#)rpc_msg.h 2.1 88/07/29 4.0 RPCSRC
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 struct but
51 * different parts of unions within it.
52 */
53
54enum msg_type {
55 CALL=0,
56 REPLY=1
57};
58
59enum reply_stat {
60 MSG_ACCEPTED=0,
61 MSG_DENIED=1
62};
63
64enum 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
73enum 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 */
87struct 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 const char *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 */
108struct 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 */
124struct 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 */
137struct 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 */
149struct 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 an rpc message.
165 * xdr_callmsg(xdrs, cmsg)
166 * XDR *xdrs;
167 * struct rpc_msg *cmsg;
168 */
169extern bool_t xdr_callmsg (XDR *, struct rpc_msg *);
170
171/*
172 * XDR routine to pre-serialize the static part of an rpc message.
173 * xdr_callhdr(xdrs, cmsg)
174 * XDR *xdrs;
175 * struct rpc_msg *cmsg;
176 */
177extern bool_t xdr_callhdr (XDR *, struct rpc_msg *);
178
179/*
180 * XDR routine to handle an rpc reply.
181 * xdr_replymsg(xdrs, rmsg)
182 * XDR *xdrs;
183 * struct rpc_msg *rmsg;
184 */
185extern bool_t xdr_replymsg (XDR *, struct rpc_msg *);
186
187
188/*
189 * XDR routine to handle a accepted rpc reply.
190 * xdr_accepted_reply(xdrs, rej)
191 * XDR *xdrs;
192 * struct accepted_reply *rej;
193 */
194extern 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 */
202extern 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 */
210extern void _seterr_reply (struct rpc_msg *, struct rpc_err *);
211__END_DECLS
212
213#endif /* !_RPC_RPC_MSG_H_ */
214