OpenSolaris_b135/lib/libnsl/rpc/clnt_raw.c
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Portions of this source code were derived from Berkeley
* 4.3 BSD under license from the Regents of the University of
* California.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* clnt_raw.c
*
* Memory based rpc for simple testing and timing.
* Interface to create an rpc client and server in the same process.
* This lets us similate rpc and get round trip overhead, without
* any interference from the kernel.
*/
#include "mt.h"
#include "rpc_mt.h"
#include <stdlib.h>
#include <rpc/rpc.h>
#include <rpc/raw.h>
#include <syslog.h>
extern mutex_t clntraw_lock;
#define MCALL_MSG_SIZE 24
#ifndef UDPMSGSIZE
#define UDPMSGSIZE 8800
#endif
/*
* This is the "network" we will be moving stuff over.
*/
static struct clnt_raw_private {
CLIENT client_object;
XDR xdr_stream;
char *raw_buf; /* should be shared with server handle */
char mashl_callmsg[MCALL_MSG_SIZE];
uint_t mcnt;
} *clnt_raw_private;
static struct clnt_ops *clnt_raw_ops();
extern void svc_getreq_common(int);
extern bool_t xdr_opaque_auth();
/*
* Create a client handle for memory based rpc.
*/
CLIENT *
clnt_raw_create(const rpcprog_t prog, const rpcvers_t vers)
{
struct clnt_raw_private *clp;
struct rpc_msg call_msg;
XDR *xdrs;
CLIENT *client;
/* VARIABLES PROTECTED BY clntraw_lock: clp */
(void) mutex_lock(&clntraw_lock);
clp = clnt_raw_private;
if (clp == NULL) {
clp = calloc(1, sizeof (*clp));
if (clp == NULL) {
(void) mutex_unlock(&clntraw_lock);
return (NULL);
}
if (_rawcombuf == NULL) {
_rawcombuf = calloc(UDPMSGSIZE, sizeof (char));
if (_rawcombuf == NULL) {
syslog(LOG_ERR, "clnt_raw_create: "
"out of memory.");
if (clp)
free(clp);
(void) mutex_unlock(&clntraw_lock);
return (NULL);
}
}
clp->raw_buf = _rawcombuf; /* Share it with the server */
clnt_raw_private = clp;
}
xdrs = &clp->xdr_stream;
client = &clp->client_object;
/*
* pre-serialize the static part of the call msg and stash it away
*/
call_msg.rm_direction = CALL;
call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
call_msg.rm_call.cb_prog = prog;
call_msg.rm_call.cb_vers = vers;
xdrmem_create(xdrs, clp->mashl_callmsg, MCALL_MSG_SIZE, XDR_ENCODE);
if (!xdr_callhdr(xdrs, &call_msg))
(void) syslog(LOG_ERR,
(const char *) "clnt_raw_create : \
Fatal header serialization error.");
clp->mcnt = XDR_GETPOS(xdrs);
XDR_DESTROY(xdrs);
/*
* Set xdrmem for client/server shared buffer
*/
xdrmem_create(xdrs, clp->raw_buf, UDPMSGSIZE, XDR_FREE);
/*
* create client handle
*/
client->cl_ops = clnt_raw_ops();
client->cl_auth = authnone_create();
(void) mutex_unlock(&clntraw_lock);
return (client);
}
/*ARGSUSED*/
static enum clnt_stat
clnt_raw_call(CLIENT *h, rpcproc_t proc, xdrproc_t xargs, caddr_t argsp,
xdrproc_t xresults, caddr_t resultsp, struct timeval timeout)
{
struct clnt_raw_private *clp;
XDR *xdrs;
struct rpc_msg msg;
enum clnt_stat status;
struct rpc_err error;
(void) mutex_lock(&clntraw_lock);
clp = clnt_raw_private;
xdrs = &clp->xdr_stream;
if (clp == NULL) {
(void) mutex_unlock(&clntraw_lock);
return (RPC_FAILED);
}
(void) mutex_unlock(&clntraw_lock);
call_again:
/*
* send request
*/
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS(xdrs, 0);
/* LINTED pointer alignment */
((struct rpc_msg *)clp->mashl_callmsg)->rm_xid++;
if ((!XDR_PUTBYTES(xdrs, clp->mashl_callmsg, clp->mcnt)) ||
(!XDR_PUTINT32(xdrs, (int32_t *)&proc)) ||
(!AUTH_MARSHALL(h->cl_auth, xdrs)) ||
(!(*xargs)(xdrs, argsp)))
return (RPC_CANTENCODEARGS);
(void) XDR_GETPOS(xdrs); /* called just to cause overhead */
/*
* We have to call server input routine here because this is
* all going on in one process.
* By convention using FD_SETSIZE as the psuedo file descriptor.
*/
svc_getreq_common(FD_SETSIZE);
/*
* get results
*/
xdrs->x_op = XDR_DECODE;
XDR_SETPOS(xdrs, 0);
msg.acpted_rply.ar_verf = _null_auth;
msg.acpted_rply.ar_results.where = resultsp;
msg.acpted_rply.ar_results.proc = xresults;
if (!xdr_replymsg(xdrs, &msg))
return (RPC_CANTDECODERES);
if ((msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
(msg.acpted_rply.ar_stat == SUCCESS))
status = RPC_SUCCESS;
else {
__seterr_reply(&msg, &error);
status = error.re_status;
}
if (status == RPC_SUCCESS) {
if (!AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
status = RPC_AUTHERROR;
}
/* end successful completion */
} else {
if (AUTH_REFRESH(h->cl_auth, &msg))
goto call_again;
/* end of unsuccessful completion */
}
if (status == RPC_SUCCESS) {
if (!AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
status = RPC_AUTHERROR;
}
if (msg.acpted_rply.ar_verf.oa_base != NULL) {
xdrs->x_op = XDR_FREE;
(void) xdr_opaque_auth(xdrs,
&(msg.acpted_rply.ar_verf));
}
}
return (status);
}
/*ARGSUSED*/
static enum clnt_stat
clnt_raw_send(CLIENT *h, rpcproc_t proc, xdrproc_t xargs, caddr_t argsp)
{
struct clnt_raw_private *clp;
XDR *xdrs;
(void) mutex_lock(&clntraw_lock);
clp = clnt_raw_private;
xdrs = &clp->xdr_stream;
if (clp == NULL) {
(void) mutex_unlock(&clntraw_lock);
return (RPC_FAILED);
}
(void) mutex_unlock(&clntraw_lock);
/*
* send request
*/
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS(xdrs, 0);
/* LINTED pointer alignment */
((struct rpc_msg *)clp->mashl_callmsg)->rm_xid++;
if ((!XDR_PUTBYTES(xdrs, clp->mashl_callmsg, clp->mcnt)) ||
(!XDR_PUTINT32(xdrs, (int32_t *)&proc)) ||
(!AUTH_MARSHALL(h->cl_auth, xdrs)) ||
(!(*xargs)(xdrs, argsp)))
return (RPC_CANTENCODEARGS);
(void) XDR_GETPOS(xdrs); /* called just to cause overhead */
/*
* We have to call server input routine here because this is
* all going on in one process.
* By convention using FD_SETSIZE as the psuedo file descriptor.
*/
svc_getreq_common(FD_SETSIZE);
return (RPC_SUCCESS);
}
/*ARGSUSED*/
static void
clnt_raw_geterr(CLIENT *cl, struct rpc_err *errp)
{
}
/*ARGSUSED*/
static bool_t
clnt_raw_freeres(CLIENT *cl, xdrproc_t xdr_res, caddr_t res_ptr)
{
struct clnt_raw_private *clp;
XDR *xdrs;
(void) mutex_lock(&clntraw_lock);
clp = clnt_raw_private;
xdrs = &clp->xdr_stream;
if (clp == NULL) {
(void) mutex_unlock(&clntraw_lock);
return (FALSE);
}
(void) mutex_unlock(&clntraw_lock);
xdrs->x_op = XDR_FREE;
return ((*xdr_res)(xdrs, res_ptr));
}
/*ARGSUSED*/
static void
clnt_raw_abort(CLIENT *cl, struct rpc_err *errp)
{
}
/*ARGSUSED*/
static bool_t
clnt_raw_control(CLIENT *cl, int request, char *info)
{
return (FALSE);
}
/*ARGSUSED*/
static void
clnt_raw_destroy(CLIENT *cl)
{
}
static struct clnt_ops *
clnt_raw_ops(void)
{
static struct clnt_ops ops;
extern mutex_t ops_lock;
/* VARIABLES PROTECTED BY ops_lock: ops */
(void) mutex_lock(&ops_lock);
if (ops.cl_call == NULL) {
ops.cl_call = clnt_raw_call;
ops.cl_send = clnt_raw_send;
ops.cl_abort = clnt_raw_abort;
ops.cl_geterr = clnt_raw_geterr;
ops.cl_freeres = clnt_raw_freeres;
ops.cl_destroy = clnt_raw_destroy;
ops.cl_control = clnt_raw_control;
}
(void) mutex_unlock(&ops_lock);
return (&ops);
}