sysdeps/mach/hurd/socket.c

   1 /* Copyright (C) 1992, 93, 94, 95, 96, 97 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 not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #include <errno.h>
  20 #include <sys/socket.h>
  21 #include <hurd.h>
  22 #include <hurd/socket.h>
  23 #include <hurd/fd.h>
  24 #include <fcntl.h>
  25
  26 /* Create a new socket of type TYPE in domain DOMAIN, using
  27    protocol PROTOCOL.  If PROTOCOL is zero, one is chosen automatically.
  28    Returns a file descriptor for the new socket, or -1 for errors.  */
  29 /* XXX should be __socket ? */
  30 int
  31 socket (domain, type, protocol)
  32      int domain;
  33      int type;
  34      int protocol;
  35 {
  36   error_t err;
  37   socket_t sock, server;
  38
  39   /* Find the socket server for DOMAIN.  */
  40   server = _hurd_socket_server (domain, 0);
  41   if (server == MACH_PORT_NULL)
  42     return -1;
  43
  44   err = __socket_create (server, type, protocol, &sock);
  45   if (err == MACH_SEND_INVALID_DEST || err == MIG_SERVER_DIED
  46       || err == MIG_BAD_ID || err == EOPNOTSUPP)
  47     {
  48       /* On the first use of the socket server during the operation,
  49          allow for the old server port dying.  */
  50       server = _hurd_socket_server (domain, 1);
  51       if (server == MACH_PORT_NULL)
  52         return -1;
  53       err = __socket_create (server, type, protocol, &sock);
  54     }
  55
  56   /* These errors all mean that the server node doesn't support the
  57      socket.defs protocol, which we'll take to mean that the protocol
  58      isn't supported.  */
  59   if (err == MACH_SEND_INVALID_DEST || err == MIG_SERVER_DIED
  60       || err == MIG_BAD_ID || err == EOPNOTSUPP)
  61     err = EPFNOSUPPORT;
  62
  63   if (err)
  64     return __hurd_fail (err);
  65
  66   return _hurd_intern_fd (sock, O_IGNORE_CTTY, 1);
  67 }