199 lines
4.6 KiB
C
199 lines
4.6 KiB
C
/*
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* rpc_msg.h
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* rpc message definition
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*
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* Copyright (c) 2010, Oracle America, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* * Neither the name of the "Oracle America, Inc." nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _RPC_MSG_H
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#define _RPC_MSG_H 1
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#include <sys/cdefs.h>
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#include <rpc/xdr.h>
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#include <rpc/clnt.h>
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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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__BEGIN_DECLS
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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 struct 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 (XDR *__xdrs, struct rpc_msg *__cmsg) __THROW;
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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 (XDR *__xdrs, struct rpc_msg *__cmsg) __THROW;
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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 (XDR *__xdrs, struct rpc_msg *__rmsg) __THROW;
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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 (struct rpc_msg *__msg, struct rpc_err *__error)
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__THROW;
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__END_DECLS
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#endif /* rpc/rpc_msg.h */
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