setsockopt.c revision 722:636b850d4ee9 
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 1989 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26#pragma ident	"%Z%%M%	%I%	%E% SMI"
27
28#include <sys/types.h>
29#include <sys/socket.h>
30#include <netinet/in.h>
31#include <errno.h>
32
33/* multicast setsockopts */
34#define	SUNOS4X_IP_MULTICAST_IF		2
35#define	SUNOS4X_IP_MULTICAST_TTL	3
36#define	SUNOS4X_IP_MULTICAST_LOOP	4
37#define	SUNOS4X_IP_ADD_MEMBERSHIP	5
38#define	SUNOS4X_IP_DROP_MEMBERSHIP	6
39#define	SUNOS5X_IP_MULTICAST_IF		0x10
40#define	SUNOS5X_IP_MULTICAST_TTL	0x11
41#define	SUNOS5X_IP_MULTICAST_LOOP	0x12
42#define	SUNOS5X_IP_ADD_MEMBERSHIP	0x13
43#define	SUNOS5X_IP_DROP_MEMBERSHIP	0x14
44
45
46int
47setsockopt(int s, int level, int optname, char *optval, int optlen)
48{
49	int	a;
50
51	if (level == SOL_SOCKET)
52		switch (optname) {
53		case SO_DONTLINGER: {
54			struct linger ling;
55			ling.l_onoff = 0;
56			if ((a = _setsockopt(s, level, SO_LINGER, &ling,
57			    sizeof (struct linger))) == -1)
58				maperror(errno);
59			return (a);
60		}
61
62		case SO_LINGER:
63			if  (optlen == sizeof (int)) {
64				struct linger ling;
65				ling.l_onoff = 1;
66				ling.l_linger = (int)*optval;
67				if ((a = _setsockopt(s, level, SO_LINGER, &ling,
68				    sizeof (struct linger))) == -1)
69					maperror(errno);
70				return (a);
71			}
72		case SO_DEBUG:
73		case SO_KEEPALIVE:
74		case SO_DONTROUTE:
75		case SO_USELOOPBACK:
76		case SO_REUSEADDR:
77			if (!optval) {
78				int val = 1;
79				if ((a = _setsockopt(s, level, optname, &val,
80				    sizeof (int))) == -1)
81					maperror(errno);
82				return (a);
83			}
84		}
85	if (level == IPPROTO_IP)
86		switch (optname) {
87		case SUNOS4X_IP_MULTICAST_IF:
88			optname = SUNOS5X_IP_MULTICAST_IF;
89			break;
90
91		case SUNOS4X_IP_MULTICAST_TTL:
92			optname = SUNOS5X_IP_MULTICAST_TTL;
93			break;
94
95		case SUNOS4X_IP_MULTICAST_LOOP:
96			optname = SUNOS5X_IP_MULTICAST_LOOP;
97			break;
98
99		case SUNOS4X_IP_ADD_MEMBERSHIP:
100			optname = SUNOS5X_IP_ADD_MEMBERSHIP;
101			break;
102
103		case SUNOS4X_IP_DROP_MEMBERSHIP:
104			optname = SUNOS5X_IP_DROP_MEMBERSHIP;
105			break;
106		}
107
108	if ((a = _setsockopt(s, level, optname, optval, optlen)) == -1)
109		maperror(errno);
110	return (a);
111}
112