sysdeps/mach/hurd/socket.c

   1 /* Copyright (C) 1992, 93, 94, 95, 96, 97, 98 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 Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the 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    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    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 int
  30 __socket (domain, type, protocol)
  31      int domain;
  32      int type;
  33      int protocol;
  34 {
  35   error_t err;
  36   socket_t sock, server;
  37
  38   /* Find the socket server for DOMAIN.  */
  39   server = _hurd_socket_server (domain, 0);
  40   if (server == MACH_PORT_NULL)
  41     return -1;
  42
  43   err = __socket_create (server, type, protocol, &sock);
  44   if (err == MACH_SEND_INVALID_DEST || err == MIG_SERVER_DIED
  45       || err == MIG_BAD_ID || err == EOPNOTSUPP)
  46     {
  47       /* On the first use of the socket server during the operation,
  48          allow for the old server port dying.  */
  49       server = _hurd_socket_server (domain, 1);
  50       if (server == MACH_PORT_NULL)
  51         return -1;
  52       err = __socket_create (server, type, protocol, &sock);
  53     }
  54
  55   /* These errors all mean that the server node doesn't support the
  56      socket.defs protocol, which we'll take to mean that the protocol
  57      isn't supported.  */
  58   if (err == MACH_SEND_INVALID_DEST || err == MIG_SERVER_DIED
  59       || err == MIG_BAD_ID || err == EOPNOTSUPP)
  60     err = EPFNOSUPPORT;
  61
  62   if (err)
  63     return __hurd_fail (err);
  64
  65   return _hurd_intern_fd (sock, O_IGNORE_CTTY, 1);
  66 }
  67
  68 weak_alias (__socket, socket)