OpenSolaris_b135/lib/libbc/libc/sys/common/setsockopt.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 1989 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */
#pragma ident	"%Z%%M%	%I%	%E% SMI"

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <errno.h>

/* multicast setsockopts */
#define	SUNOS4X_IP_MULTICAST_IF		2
#define	SUNOS4X_IP_MULTICAST_TTL	3
#define	SUNOS4X_IP_MULTICAST_LOOP	4
#define	SUNOS4X_IP_ADD_MEMBERSHIP	5
#define	SUNOS4X_IP_DROP_MEMBERSHIP	6
#define	SUNOS5X_IP_MULTICAST_IF		0x10
#define	SUNOS5X_IP_MULTICAST_TTL	0x11
#define	SUNOS5X_IP_MULTICAST_LOOP	0x12
#define	SUNOS5X_IP_ADD_MEMBERSHIP	0x13
#define	SUNOS5X_IP_DROP_MEMBERSHIP	0x14


int
setsockopt(int s, int level, int optname, char *optval, int optlen)
{
	int	a;

	if (level == SOL_SOCKET)
		switch (optname) {
		case SO_DONTLINGER: {
			struct linger ling;
			ling.l_onoff = 0;
			if ((a = _setsockopt(s, level, SO_LINGER, &ling,
			    sizeof (struct linger))) == -1)
				maperror(errno);
			return (a);
		}

		case SO_LINGER:
			if  (optlen == sizeof (int)) {
				struct linger ling;
				ling.l_onoff = 1;
				ling.l_linger = (int)*optval;
				if ((a = _setsockopt(s, level, SO_LINGER, &ling,
				    sizeof (struct linger))) == -1)
					maperror(errno);
				return (a);
			}
		case SO_DEBUG:
		case SO_KEEPALIVE:
		case SO_DONTROUTE:
		case SO_USELOOPBACK:
		case SO_REUSEADDR:
			if (!optval) {
				int val = 1;
				if ((a = _setsockopt(s, level, optname, &val,
				    sizeof (int))) == -1)
					maperror(errno);
				return (a);
			}
		}
	if (level == IPPROTO_IP)
		switch (optname) {
		case SUNOS4X_IP_MULTICAST_IF:
			optname = SUNOS5X_IP_MULTICAST_IF;
			break;

		case SUNOS4X_IP_MULTICAST_TTL:
			optname = SUNOS5X_IP_MULTICAST_TTL;
			break;

		case SUNOS4X_IP_MULTICAST_LOOP:
			optname = SUNOS5X_IP_MULTICAST_LOOP;
			break;

		case SUNOS4X_IP_ADD_MEMBERSHIP:
			optname = SUNOS5X_IP_ADD_MEMBERSHIP;
			break;

		case SUNOS4X_IP_DROP_MEMBERSHIP:
			optname = SUNOS5X_IP_DROP_MEMBERSHIP;
			break;
		}

	if ((a = _setsockopt(s, level, optname, optval, optlen)) == -1)
		maperror(errno);
	return (a);
}