usr/src/lib/libbc/libc/sys/common/setsockopt.c

   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
  46 int
  47 setsockopt(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 }