sysdeps/mach/hurd/socket.c

   1 /* Copyright (C) 1992, 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <ansidecl.h>
  20 #include <errno.h>
  21 #include <sys/socket.h>
  22 #include <hurd.h>
  23 #include <hurd/socket.h>
  24 #include <hurd/fd.h>
  25 #include <fcntl.h>
  26
  27 /* Create a new socket of type TYPE in domain DOMAIN, using
  28    protocol PROTOCOL.  If PROTOCOL is zero, one is chosen automatically.
  29    Returns a file descriptor for the new socket, or -1 for errors.  */
  30 int
  31 DEFUN(socket, (domain, type, protocol),
  32       int domain AND int type AND int protocol)
  33 {
  34   error_t err;
  35   socket_t sock, server;
  36
  37   /* Find the socket server for DOMAIN.  */
  38   server = _hurd_socket_server (domain, 0);
  39   if (server == MACH_PORT_NULL)
  40     return -1;
  41
  42   err = __socket_create (server, type, protocol, &sock);
  43   if (err == MACH_SEND_INVALID_DEST || err == MIG_SERVER_DIED
  44       || err == MIG_BAD_ID || err == EOPNOTSUPP)
  45     {
  46       /* On the first use of the socket server during the operation,
  47          allow for the old server port dying.  */
  48       server = _hurd_socket_server (domain, 1);
  49       if (server == MACH_PORT_NULL)
  50         return -1;
  51       err = __socket_create (server, type, protocol, &sock);
  52     }
  53
  54   /* These errors all mean that the server node doesn't support the
  55      socket.defs protocol, which we'll take to mean that the protocol
  56      isn't supported.  */
  57   if (err == MACH_SEND_INVALID_DEST || err == MIG_SERVER_DIED
  58       || err == MIG_BAD_ID || err == EOPNOTSUPP)
  59     err = EPFNOSUPPORT;
  60
  61   if (err)
  62     return __hurd_fail (err);
  63
  64   return _hurd_intern_fd (sock, O_IGNORE_CTTY, 1);
  65 }