usr/src/lib/libbc/libc/sys/common/socketpair.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 (c) 1990-1996 by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 #ident  "%Z%%M% %I%     %E% SMI"
  28
  29 #include <sys/types.h>
  30 #include <sys/socket.h>
  31 #include <sys/errno.h>
  32
  33 extern int      errno;
  34
  35 int
  36 socketpair(family, type, protocol, sv)
  37 register int    family;
  38 register int    type;
  39 register int    protocol;
  40 register int    sv[2];
  41 {
  42         int     ret;
  43         static int map[] = {0, 2, 1, 4, 5, 6};
  44         if ((ret = _socketpair_bsd(family, map[type], protocol,
  45                                         sv)) == -1) {
  46                 maperror(errno);
  47                 switch (errno) {
  48                 case EAFNOSUPPORT:
  49                 case EPROTOTYPE:
  50                         errno = EPROTONOSUPPORT;
  51                         break;
  52                 }
  53         }
  54         return (ret);
  55 }