libsyscall/wrappers/legacy/socketpair.c

   1 /*
   2  * Copyright (c) 2006-2010 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #ifndef NO_SYSCALL_LEGACY
  25
  26 #define _NONSTD_SOURCE
  27 #include <sys/cdefs.h>
  28
  29 /*
  30  * We need conformance on so that EOPNOTSUPP=102.  But the routine symbol
  31  * will still be the legacy (undecorated) one.
  32  */
  33 #undef __DARWIN_UNIX03
  34 #define __DARWIN_UNIX03 1
  35
  36 #include <sys/types.h>
  37 #include <sys/socket.h>
  38
  39 #include "_errno.h"
  40
  41 extern int __socketpair(int, int, int, int[2]);
  42
  43 /*
  44  * socketpair stub, legacy version
  45  */
  46 int
  47 socketpair(int domain, int type, int protocol, int socket_vector[2])
  48 {
  49         int ret = __socketpair(domain, type, protocol, socket_vector);
  50
  51         /* use ENOTSUP for legacy behavior */
  52         if (ret < 0 && errno == EOPNOTSUPP) {
  53                 errno = ENOTSUP;
  54         }
  55         return ret;
  56 }
  57
  58 #endif