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RPC(3): Import from FreeBSD
This commit is contained in:
Sebastian Huber
316
freebsd/lib/libc/rpc/clnt_raw.c
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316
freebsd/lib/libc/rpc/clnt_raw.c
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@@ -0,0 +1,316 @@
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#include <machine/rtems-bsd-user-space.h>
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/* $NetBSD: clnt_raw.c,v 1.20 2000/12/10 04:12:03 christos Exp $ */
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/*-
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* Copyright (c) 2009, Sun Microsystems, Inc.
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* All rights reserved.
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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 met:
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of Sun Microsystems, 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 "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char *sccsid2 = "@(#)clnt_raw.c 1.22 87/08/11 Copyr 1984 Sun Micro";
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static char *sccsid = "@(#)clnt_raw.c 2.2 88/08/01 4.0 RPCSRC";
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* clnt_raw.c
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*
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* Copyright (C) 1984, Sun Microsystems, Inc.
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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 similate 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 "namespace.h"
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#include "reentrant.h"
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#include <assert.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <rpc/rpc.h>
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#include <rpc/raw.h>
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#include "un-namespace.h"
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#include "mt_misc.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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static struct clntraw_private {
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CLIENT client_object;
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XDR xdr_stream;
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char *_raw_buf;
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union {
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struct rpc_msg mashl_rpcmsg;
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char mashl_callmsg[MCALL_MSG_SIZE];
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} u;
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u_int mcnt;
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} *clntraw_private;
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static enum clnt_stat clnt_raw_call(CLIENT *, rpcproc_t, xdrproc_t, void *,
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xdrproc_t, void *, struct timeval);
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static void clnt_raw_geterr(CLIENT *, struct rpc_err *);
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static bool_t clnt_raw_freeres(CLIENT *, xdrproc_t, void *);
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static void clnt_raw_abort(CLIENT *);
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static bool_t clnt_raw_control(CLIENT *, u_int, void *);
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static void clnt_raw_destroy(CLIENT *);
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static struct clnt_ops *clnt_raw_ops(void);
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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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clnt_raw_create(prog, vers)
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rpcprog_t prog;
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rpcvers_t vers;
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{
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struct clntraw_private *clp;
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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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mutex_lock(&clntraw_lock);
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if ((clp = clntraw_private) == NULL) {
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clp = (struct clntraw_private *)calloc(1, sizeof (*clp));
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if (clp == NULL) {
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mutex_unlock(&clntraw_lock);
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return NULL;
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}
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if (__rpc_rawcombuf == NULL)
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__rpc_rawcombuf =
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(char *)calloc(UDPMSGSIZE, sizeof (char));
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clp->_raw_buf = __rpc_rawcombuf;
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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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/* XXX: prog and vers have been long historically :-( */
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call_msg.rm_call.cb_prog = (u_int32_t)prog;
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call_msg.rm_call.cb_vers = (u_int32_t)vers;
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xdrmem_create(xdrs, clp->u.mashl_callmsg, MCALL_MSG_SIZE, XDR_ENCODE);
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if (! xdr_callhdr(xdrs, &call_msg))
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warnx("clntraw_create - Fatal header serialization error.");
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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 = clnt_raw_ops();
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client->cl_auth = authnone_create();
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mutex_unlock(&clntraw_lock);
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return (client);
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}
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/* ARGSUSED */
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static enum clnt_stat
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clnt_raw_call(h, proc, xargs, argsp, xresults, resultsp, timeout)
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CLIENT *h;
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rpcproc_t proc;
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xdrproc_t xargs;
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void *argsp;
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xdrproc_t xresults;
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void *resultsp;
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struct timeval timeout;
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{
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struct clntraw_private *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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assert(h != NULL);
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mutex_lock(&clntraw_lock);
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if (clp == NULL) {
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mutex_unlock(&clntraw_lock);
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return (RPC_FAILED);
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}
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mutex_unlock(&clntraw_lock);
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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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clp->u.mashl_rpcmsg.rm_xid ++ ;
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if ((! XDR_PUTBYTES(xdrs, clp->u.mashl_callmsg, clp->mcnt)) ||
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(! XDR_PUTINT32(xdrs, &proc)) ||
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(! AUTH_MARSHALL(h->cl_auth, xdrs)) ||
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(! (*xargs)(xdrs, argsp))) {
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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_common(FD_SETSIZE);
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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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/*
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* It's possible for xdr_replymsg() to fail partway
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* through its attempt to decode the result from the
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* server. If this happens, it will leave the reply
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* structure partially populated with dynamically
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* allocated memory. (This can happen if someone uses
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* clntudp_bufcreate() to create a CLIENT handle and
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* specifies a receive buffer size that is too small.)
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* This memory must be free()ed to avoid a leak.
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*/
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int op = xdrs->x_op;
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xdrs->x_op = XDR_FREE;
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xdr_replymsg(xdrs, &msg);
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xdrs->x_op = op;
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return (RPC_CANTDECODERES);
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}
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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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if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
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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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if (AUTH_REFRESH(h->cl_auth, &msg))
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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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if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
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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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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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/*ARGSUSED*/
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static void
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clnt_raw_geterr(cl, err)
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CLIENT *cl;
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struct rpc_err *err;
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{
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}
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/* ARGSUSED */
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static bool_t
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clnt_raw_freeres(cl, xdr_res, res_ptr)
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CLIENT *cl;
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xdrproc_t xdr_res;
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void *res_ptr;
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{
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struct clntraw_private *clp = clntraw_private;
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XDR *xdrs = &clp->xdr_stream;
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bool_t rval;
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mutex_lock(&clntraw_lock);
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if (clp == NULL) {
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rval = (bool_t) RPC_FAILED;
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mutex_unlock(&clntraw_lock);
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return (rval);
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}
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mutex_unlock(&clntraw_lock);
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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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/*ARGSUSED*/
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static void
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clnt_raw_abort(cl)
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CLIENT *cl;
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{
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}
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/*ARGSUSED*/
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static bool_t
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clnt_raw_control(cl, ui, str)
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CLIENT *cl;
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u_int ui;
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void *str;
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{
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return (FALSE);
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}
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/*ARGSUSED*/
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static void
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clnt_raw_destroy(cl)
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CLIENT *cl;
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{
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}
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static struct clnt_ops *
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clnt_raw_ops()
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{
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static struct clnt_ops ops;
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/* VARIABLES PROTECTED BY ops_lock: ops */
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mutex_lock(&ops_lock);
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if (ops.cl_call == NULL) {
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ops.cl_call = clnt_raw_call;
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ops.cl_abort = clnt_raw_abort;
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ops.cl_geterr = clnt_raw_geterr;
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ops.cl_freeres = clnt_raw_freeres;
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ops.cl_destroy = clnt_raw_destroy;
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ops.cl_control = clnt_raw_control;
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}
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mutex_unlock(&ops_lock);
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return (&ops);
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}
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