xref: /freebsd-11-stable/lib/libc/rpc/svc_run.c

/*	$NetBSD: svc_run.c,v 1.17 2000/07/06 03:10:35 christos Exp $	*/

/*-
 * Copyright (c) 2009, Sun Microsystems, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * - Neither the name of Sun Microsystems, Inc. nor the names of its
 *   contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char *sccsid2 = "from: @(#)svc_run.c 1.1 87/10/13 Copyr 1984 Sun Micro";
static char *sccsid = "from: @(#)svc_run.c	2.1 88/07/29 4.0 RPCSRC";
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

/*
 * This is the rpc server side idle loop
 * Wait for input, call server program.
 */
#include "namespace.h"
#include "reentrant.h"
#include <err.h>
#include <errno.h>
#include <rpc/rpc.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "un-namespace.h"

#include <rpc/rpc.h>
#include "rpc_com.h"
#include "mt_misc.h"

void
svc_run(void)
{
	fd_set readfds, cleanfds;
	struct timeval timeout;

	timeout.tv_sec = 30;
	timeout.tv_usec = 0;

	for (;;) {
		rwlock_rdlock(&svc_fd_lock);
		readfds = svc_fdset;
		cleanfds = svc_fdset;
		rwlock_unlock(&svc_fd_lock);
		switch (_select(svc_maxfd+1, &readfds, NULL, NULL, &timeout)) {
		case -1:
			FD_ZERO(&readfds);
			if (errno == EINTR) {
				continue;
			}
			_warn("svc_run: - select failed");
			return;
		case 0:
			__svc_clean_idle(&cleanfds, 30, FALSE);
			continue;
		default:
			svc_getreqset(&readfds);
		}
	}
}

/*
 *      This function causes svc_run() to exit by telling it that it has no
 *      more work to do.
 */
void
svc_exit(void)
{
	rwlock_wrlock(&svc_fd_lock);
	FD_ZERO(&svc_fdset);
	rwlock_unlock(&svc_fd_lock);
}