1/*
2 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
7 * Reserved.  This file contains Original Code and/or Modifications of
8 * Original Code as defined in and that are subject to the Apple Public
9 * Source License Version 1.1 (the "License").  You may not use this file
10 * except in compliance with the License.  Please obtain a copy of the
11 * License at http://www.apple.com/publicsource and read it before using
12 * this file.
13 *
14 * The Original Code and all software distributed under the License are
15 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.  Please see the
19 * License for the specific language governing rights and limitations
20 * under the License.
21 *
22 * @APPLE_LICENSE_HEADER_END@
23 */
24/*
25 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
26 * unrestricted use provided that this legend is included on all tape
27 * media and as a part of the software program in whole or part.  Users
28 * may copy or modify Sun RPC without charge, but are not authorized
29 * to license or distribute it to anyone else except as part of a product or
30 * program developed by the user.
31 *
32 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
33 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
34 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
35 *
36 * Sun RPC is provided with no support and without any obligation on the
37 * part of Sun Microsystems, Inc. to assist in its use, correction,
38 * modification or enhancement.
39 *
40 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
41 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
42 * OR ANY PART THEREOF.
43 *
44 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
45 * or profits or other special, indirect and consequential damages, even if
46 * Sun has been advised of the possibility of such damages.
47 *
48 * Sun Microsystems, Inc.
49 * 2550 Garcia Avenue
50 * Mountain View, California  94043
51 *
52 *	from: @(#)rpc_msg.h 1.7 86/07/16 SMI
53 *	from: @(#)rpc_msg.h	2.1 88/07/29 4.0 RPCSRC
54 *	$Id: rpc_msg.h,v 1.3 2004/10/28 21:58:24 emoy Exp $
55 */
56
57/*
58 * rpc_msg.h
59 * rpc message definition
60 *
61 * Copyright (C) 1984, Sun Microsystems, Inc.
62 */
63
64#ifndef _RPC_RPCMSG_H
65#define _RPC_RPCMSG_H
66
67#ifdef __LP64__
68#define RPC_MSG_VERSION		((unsigned int) 2)
69#else
70#define RPC_MSG_VERSION		((unsigned long) 2)
71#endif
72#define RPC_SERVICE_PORT	((unsigned short) 2048)
73
74/*
75 * Bottom up definition of an rpc message.
76 * NOTE: call and reply use the same overall stuct but
77 * different parts of unions within it.
78 */
79
80enum msg_type {
81	CALL=0,
82	REPLY=1
83};
84
85enum reply_stat {
86	MSG_ACCEPTED=0,
87	MSG_DENIED=1
88};
89
90enum accept_stat {
91	SUCCESS=0,
92	PROG_UNAVAIL=1,
93	PROG_MISMATCH=2,
94	PROC_UNAVAIL=3,
95	GARBAGE_ARGS=4,
96	SYSTEM_ERR=5
97};
98
99enum reject_stat {
100	RPC_MISMATCH=0,
101	AUTH_ERROR=1
102};
103
104/*
105 * Reply part of an rpc exchange
106 */
107
108/*
109 * Reply to an rpc request that was accepted by the server.
110 * Note: there could be an error even though the request was
111 * accepted.
112 */
113struct accepted_reply {
114	struct opaque_auth	ar_verf;
115	enum accept_stat	ar_stat;
116	union {
117		struct {
118#ifdef __LP64__
119			unsigned int low;
120			unsigned int high;
121#else
122			unsigned long low;
123			unsigned long high;
124#endif
125		} AR_versions;
126		struct {
127			caddr_t	where;
128			xdrproc_t proc;
129		} AR_results;
130		/* and many other null cases */
131	} ru;
132#define	ar_results	ru.AR_results
133#define	ar_vers		ru.AR_versions
134};
135
136/*
137 * Reply to an rpc request that was rejected by the server.
138 */
139struct rejected_reply {
140	enum reject_stat rj_stat;
141	union {
142		struct {
143#ifdef __LP64__
144			unsigned int low;
145			unsigned int high;
146#else
147			unsigned long low;
148			unsigned long high;
149#endif
150		} RJ_versions;
151		enum auth_stat RJ_why;  /* why authentication did not work */
152	} ru;
153#define	rj_vers	ru.RJ_versions
154#define	rj_why	ru.RJ_why
155};
156
157/*
158 * Body of a reply to an rpc request.
159 */
160struct reply_body {
161	enum reply_stat rp_stat;
162	union {
163		struct accepted_reply RP_ar;
164		struct rejected_reply RP_dr;
165	} ru;
166#define	rp_acpt	ru.RP_ar
167#define	rp_rjct	ru.RP_dr
168};
169
170/*
171 * Body of an rpc request call.
172 */
173struct call_body {
174#ifdef __LP64__
175	unsigned int cb_rpcvers;	/* must be equal to two */
176	unsigned int cb_prog;
177	unsigned int cb_vers;
178	unsigned int cb_proc;
179#else
180	unsigned long cb_rpcvers;	/* must be equal to two */
181	unsigned long cb_prog;
182	unsigned long cb_vers;
183	unsigned long cb_proc;
184#endif
185	struct opaque_auth cb_cred;
186	struct opaque_auth cb_verf; /* protocol specific - provided by client */
187};
188
189/*
190 * The rpc message
191 */
192struct rpc_msg {
193#ifdef __LP64__
194	unsigned int			rm_xid;
195#else
196	unsigned long			rm_xid;
197#endif
198	enum msg_type		rm_direction;
199	union {
200		struct call_body RM_cmb;
201		struct reply_body RM_rmb;
202	} ru;
203#define	rm_call		ru.RM_cmb
204#define	rm_reply	ru.RM_rmb
205};
206#define	acpted_rply	ru.RM_rmb.ru.RP_ar
207#define	rjcted_rply	ru.RM_rmb.ru.RP_dr
208
209__BEGIN_DECLS
210/*
211 * XDR routine to handle a rpc message.
212 * xdr_callmsg(xdrs, cmsg)
213 * 	XDR *xdrs;
214 * 	struct rpc_msg *cmsg;
215 */
216extern bool_t	xdr_callmsg	__P((XDR *, struct rpc_msg *));
217
218/*
219 * XDR routine to pre-serialize the static part of a rpc message.
220 * xdr_callhdr(xdrs, cmsg)
221 * 	XDR *xdrs;
222 * 	struct rpc_msg *cmsg;
223 */
224extern bool_t	xdr_callhdr	__P((XDR *, struct rpc_msg *));
225
226/*
227 * XDR routine to handle a rpc reply.
228 * xdr_replymsg(xdrs, rmsg)
229 * 	XDR *xdrs;
230 * 	struct rpc_msg *rmsg;
231 */
232extern bool_t	xdr_replymsg	__P((XDR *, struct rpc_msg *));
233
234/*
235 * Fills in the error part of a reply message.
236 * _seterr_reply(msg, error)
237 * 	struct rpc_msg *msg;
238 * 	struct rpc_err *error;
239 */
240extern void	_seterr_reply	__P((struct rpc_msg *, struct rpc_err *));
241__END_DECLS
242
243#endif /* !_RPC_RPCMSG_H */
244