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      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 
     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 			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  */
    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 an 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 an 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 an 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 a 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 void	_seterr_reply	(struct rpc_msg *, struct rpc_err *);
    211 __END_DECLS
    212 
    213 #endif /* !_RPC_RPC_MSG_H_ */
    214