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/*
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* clnt_raw.c
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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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* Memory based rpc for simple testing and timing.
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* Interface to create an rpc client and server in the same process.
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* This lets us simulate rpc and get round trip overhead, without
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* any interference from the kernel.
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*/
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#include <rpc/rpc.h>
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#include <rpc/svc.h>
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#include <rpc/xdr.h>
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#include <libintl.h>
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#include <shlib-compat.h>
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#define MCALL_MSG_SIZE 24
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/*
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* This is the "network" we will be moving stuff over.
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*/
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struct clntraw_private_s
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{
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CLIENT client_object;
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XDR xdr_stream;
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char _raw_buf[UDPMSGSIZE];
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union
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{
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char msg[MCALL_MSG_SIZE];
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u_long rm_xid;
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} mashl_callmsg;
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u_int mcnt;
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};
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#define clntraw_private RPC_THREAD_VARIABLE(clntraw_private_s)
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static enum clnt_stat clntraw_call (CLIENT *, u_long, xdrproc_t, caddr_t,
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xdrproc_t, caddr_t, struct timeval);
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static void clntraw_abort (void);
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static void clntraw_geterr (CLIENT *, struct rpc_err *);
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static bool_t clntraw_freeres (CLIENT *, xdrproc_t, caddr_t);
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static bool_t clntraw_control (CLIENT *, int, char *);
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static void clntraw_destroy (CLIENT *);
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static const struct clnt_ops client_ops =
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{
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clntraw_call,
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clntraw_abort,
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clntraw_geterr,
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clntraw_freeres,
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clntraw_destroy,
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clntraw_control
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};
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/*
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* Create a client handle for memory based rpc.
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*/
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CLIENT *
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clntraw_create (u_long prog, u_long vers)
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{
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struct clntraw_private_s *clp = clntraw_private;
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struct rpc_msg call_msg;
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XDR *xdrs;
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CLIENT *client;
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if (clp == 0)
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{
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clp = (struct clntraw_private_s *) calloc (1, sizeof (*clp));
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if (clp == 0)
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return (0);
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clntraw_private = clp;
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}
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xdrs = &clp->xdr_stream;
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client = &clp->client_object;
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/*
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* pre-serialize the static part of the call msg and stash it away
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*/
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call_msg.rm_direction = CALL;
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call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
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call_msg.rm_call.cb_prog = prog;
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call_msg.rm_call.cb_vers = vers;
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xdrmem_create (xdrs, clp->mashl_callmsg.msg, MCALL_MSG_SIZE, XDR_ENCODE);
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if (!xdr_callhdr (xdrs, &call_msg))
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{
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perror (_ ("clnt_raw.c: fatal header serialization error"));
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}
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clp->mcnt = XDR_GETPOS (xdrs);
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XDR_DESTROY (xdrs);
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/*
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* Set xdrmem for client/server shared buffer
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*/
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xdrmem_create (xdrs, clp->_raw_buf, UDPMSGSIZE, XDR_FREE);
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/*
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* create client handle
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*/
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client->cl_ops = (struct clnt_ops *) &client_ops;
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client->cl_auth = authnone_create ();
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return client;
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}
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libc_hidden_nolink_sunrpc (clntraw_create, GLIBC_2_0)
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static enum clnt_stat
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clntraw_call (CLIENT *h, u_long proc, xdrproc_t xargs, caddr_t argsp,
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xdrproc_t xresults, caddr_t resultsp, struct timeval timeout)
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{
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struct clntraw_private_s *clp = clntraw_private;
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XDR *xdrs = &clp->xdr_stream;
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struct rpc_msg msg;
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enum clnt_stat status;
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struct rpc_err error;
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if (clp == NULL)
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return RPC_FAILED;
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call_again:
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/*
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* send request
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*/
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xdrs->x_op = XDR_ENCODE;
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XDR_SETPOS (xdrs, 0);
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/* Just checking the union definition to access rm_xid is correct. */
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if (offsetof (struct rpc_msg, rm_xid) != 0)
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abort ();
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clp->mashl_callmsg.rm_xid++;
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if ((!XDR_PUTBYTES (xdrs, clp->mashl_callmsg.msg, clp->mcnt)) ||
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(!XDR_PUTLONG (xdrs, (long *) &proc)) ||
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(!AUTH_MARSHALL (h->cl_auth, xdrs)) ||
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(!(*xargs) (xdrs, argsp)))
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{
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return (RPC_CANTENCODEARGS);
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}
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(void) XDR_GETPOS (xdrs); /* called just to cause overhead */
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/*
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* We have to call server input routine here because this is
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* all going on in one process. Yuk.
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*/
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svc_getreq (1);
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/*
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* get results
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*/
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xdrs->x_op = XDR_DECODE;
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XDR_SETPOS (xdrs, 0);
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msg.acpted_rply.ar_verf = _null_auth;
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msg.acpted_rply.ar_results.where = resultsp;
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msg.acpted_rply.ar_results.proc = xresults;
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if (!xdr_replymsg (xdrs, &msg))
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return RPC_CANTDECODERES;
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_seterr_reply (&msg, &error);
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status = error.re_status;
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if (status == RPC_SUCCESS)
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{
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if (!AUTH_VALIDATE (h->cl_auth, &msg.acpted_rply.ar_verf))
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{
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status = RPC_AUTHERROR;
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}
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} /* end successful completion */
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else
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{
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if (AUTH_REFRESH (h->cl_auth))
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goto call_again;
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} /* end of unsuccessful completion */
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if (status == RPC_SUCCESS)
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{
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if (!AUTH_VALIDATE (h->cl_auth, &msg.acpted_rply.ar_verf))
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{
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status = RPC_AUTHERROR;
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}
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if (msg.acpted_rply.ar_verf.oa_base != NULL)
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{
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xdrs->x_op = XDR_FREE;
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(void) xdr_opaque_auth (xdrs, &(msg.acpted_rply.ar_verf));
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}
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}
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return status;
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}
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static void
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clntraw_geterr (CLIENT *cl, struct rpc_err *err)
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{
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}
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static bool_t
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clntraw_freeres (CLIENT *cl, xdrproc_t xdr_res, caddr_t res_ptr)
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{
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struct clntraw_private_s *clp = clntraw_private;
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XDR *xdrs = &clp->xdr_stream;
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bool_t rval;
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if (clp == NULL)
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{
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rval = (bool_t) RPC_FAILED;
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return rval;
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}
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xdrs->x_op = XDR_FREE;
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return (*xdr_res) (xdrs, res_ptr);
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}
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static void
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clntraw_abort (void)
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{
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}
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static bool_t
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clntraw_control (CLIENT *cl, int i, char *c)
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{
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return FALSE;
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}
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static void
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clntraw_destroy (CLIENT *cl)
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{
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}
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