1/*
2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part.  Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
8 *
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
12 *
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
16 *
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
20 *
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
24 *
25 * Sun Microsystems, Inc.
26 * 2550 Garcia Avenue
27 * Mountain View, California  94043
28 *
29 *	from: @(#)rpc_msg.h 1.7 86/07/16 SMI
30 *	from: @(#)rpc_msg.h	2.1 88/07/29 4.0 RPCSRC
31 * $FreeBSD: src/include/rpc/rpc_msg.h,v 1.11.2.1 1999/08/29 14:39:07 peter Exp $
32 */
33
34/*
35 * rpc_msg.h
36 * rpc message definition
37 *
38 * Copyright (C) 1984, Sun Microsystems, Inc.
39 */
40
41#define SUNRPC_MSG_VERSION	((uint32_t) 2)
42
43/*
44 * Bottom up definition of an rpc message.
45 * NOTE: call and reply use the same overall stuct but
46 * different parts of unions within it.
47 */
48
49enum sunrpc_msg_type {
50	SUNRPC_CALL=0,
51	SUNRPC_REPLY=1
52};
53
54enum sunrpc_reply_stat {
55	SUNRPC_MSG_ACCEPTED=0,
56	SUNRPC_MSG_DENIED=1
57};
58
59enum sunrpc_accept_stat {
60	SUNRPC_SUCCESS=0,
61	SUNRPC_PROG_UNAVAIL=1,
62	SUNRPC_PROG_MISMATCH=2,
63	SUNRPC_PROC_UNAVAIL=3,
64	SUNRPC_GARBAGE_ARGS=4,
65	SUNRPC_SYSTEM_ERR=5
66};
67
68enum sunrpc_reject_stat {
69	SUNRPC_RPC_MISMATCH=0,
70	SUNRPC_AUTH_ERROR=1
71};
72
73/*
74 * Reply part of an rpc exchange
75 */
76
77/*
78 * Reply to an rpc request that was rejected by the server.
79 */
80struct sunrpc_rejected_reply {
81	uint32_t		 rj_stat;	/* enum reject_stat */
82	union {
83		struct {
84			uint32_t low;
85			uint32_t high;
86		} RJ_versions;
87		uint32_t RJ_why;  /* enum auth_stat - why authentication did not work */
88	} ru;
89#define	rj_vers	ru.RJ_versions
90#define	rj_why	ru.RJ_why
91};
92
93/*
94 * Body of a reply to an rpc request.
95 */
96struct sunrpc_reply_body {
97	uint32_t	rp_stat;		/* enum reply_stat */
98	struct sunrpc_rejected_reply rp_reject;	/* if rejected */
99};
100
101/*
102 * Body of an rpc request call.
103 */
104struct sunrpc_call_body {
105	uint32_t cb_rpcvers;	/* must be equal to two */
106	uint32_t cb_prog;
107	uint32_t cb_vers;
108	uint32_t cb_proc;
109	struct sunrpc_opaque_auth cb_cred;
110	/* followed by opaque verifier */
111};
112
113/*
114 * The rpc message
115 */
116struct sunrpc_msg {
117	uint32_t		rm_xid;
118	uint32_t		rm_direction;	/* enum msg_type */
119	union {
120		struct sunrpc_call_body RM_cmb;
121		struct sunrpc_reply_body RM_rmb;
122	} ru;
123#define	rm_call		ru.RM_cmb
124#define	rm_reply	ru.RM_rmb
125};
126#define	acpted_rply	ru.RM_rmb.ru.RP_ar
127#define	rjcted_rply	ru.RM_rmb.ru.RP_dr
128