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Roland McGrath
187
sunrpc/rpc/rpc_msg.h
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187
sunrpc/rpc/rpc_msg.h
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/* @(#)rpc_msg.h 2.1 88/07/29 4.0 RPCSRC */
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/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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/* @(#)rpc_msg.h 1.7 86/07/16 SMI */
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/*
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* rpc_msg.h
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* rpc message definition
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*
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* Copyright (C) 1984, Sun Microsystems, Inc.
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*/
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#define RPC_MSG_VERSION ((u_long) 2)
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#define RPC_SERVICE_PORT ((u_short) 2048)
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/*
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* Bottom up definition of an rpc message.
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* NOTE: call and reply use the same overall stuct but
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* different parts of unions within it.
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*/
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enum msg_type {
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CALL=0,
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REPLY=1
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};
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enum reply_stat {
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MSG_ACCEPTED=0,
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MSG_DENIED=1
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};
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enum accept_stat {
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SUCCESS=0,
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PROG_UNAVAIL=1,
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PROG_MISMATCH=2,
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PROC_UNAVAIL=3,
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GARBAGE_ARGS=4,
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SYSTEM_ERR=5
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};
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enum reject_stat {
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RPC_MISMATCH=0,
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AUTH_ERROR=1
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};
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/*
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* Reply part of an rpc exchange
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*/
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/*
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* Reply to an rpc request that was accepted by the server.
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* Note: there could be an error even though the request was
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* accepted.
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*/
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struct accepted_reply {
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struct opaque_auth ar_verf;
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enum accept_stat ar_stat;
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union {
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struct {
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u_long low;
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u_long high;
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} AR_versions;
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struct {
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caddr_t where;
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xdrproc_t proc;
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} AR_results;
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/* and many other null cases */
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} ru;
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#define ar_results ru.AR_results
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#define ar_vers ru.AR_versions
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};
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/*
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* Reply to an rpc request that was rejected by the server.
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*/
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struct rejected_reply {
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enum reject_stat rj_stat;
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union {
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struct {
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u_long low;
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u_long high;
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} RJ_versions;
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enum auth_stat RJ_why; /* why authentication did not work */
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} ru;
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#define rj_vers ru.RJ_versions
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#define rj_why ru.RJ_why
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};
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/*
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* Body of a reply to an rpc request.
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*/
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struct reply_body {
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enum reply_stat rp_stat;
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union {
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struct accepted_reply RP_ar;
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struct rejected_reply RP_dr;
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} ru;
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#define rp_acpt ru.RP_ar
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#define rp_rjct ru.RP_dr
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};
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/*
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* Body of an rpc request call.
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*/
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struct call_body {
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u_long cb_rpcvers; /* must be equal to two */
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u_long cb_prog;
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u_long cb_vers;
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u_long cb_proc;
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struct opaque_auth cb_cred;
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struct opaque_auth cb_verf; /* protocol specific - provided by client */
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};
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/*
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* The rpc message
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*/
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struct rpc_msg {
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u_long rm_xid;
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enum msg_type rm_direction;
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union {
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struct call_body RM_cmb;
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struct reply_body RM_rmb;
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} ru;
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#define rm_call ru.RM_cmb
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#define rm_reply ru.RM_rmb
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};
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#define acpted_rply ru.RM_rmb.ru.RP_ar
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#define rjcted_rply ru.RM_rmb.ru.RP_dr
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/*
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* XDR routine to handle a rpc message.
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* xdr_callmsg(xdrs, cmsg)
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* XDR *xdrs;
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* struct rpc_msg *cmsg;
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*/
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extern bool_t xdr_callmsg();
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/*
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* XDR routine to pre-serialize the static part of a rpc message.
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* xdr_callhdr(xdrs, cmsg)
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* XDR *xdrs;
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* struct rpc_msg *cmsg;
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*/
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extern bool_t xdr_callhdr();
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/*
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* XDR routine to handle a rpc reply.
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* xdr_replymsg(xdrs, rmsg)
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* XDR *xdrs;
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* struct rpc_msg *rmsg;
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*/
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extern bool_t xdr_replymsg();
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/*
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* Fills in the error part of a reply message.
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* _seterr_reply(msg, error)
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* struct rpc_msg *msg;
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* struct rpc_err *error;
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*/
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extern void _seterr_reply();
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