socket.c

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/* Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
This file is part of the GNU C Library.

The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.

The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB.  If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA.  */

#include <ansidecl.h>
#include <errno.h>
#include <sys/socket.h>
#include <hurd.h>
#include <hurd/socket.h>
#include <hurd/fd.h>
#include <fcntl.h>

/* Create a new socket of type TYPE in domain DOMAIN, using
   protocol PROTOCOL.  If PROTOCOL is zero, one is chosen automatically.
   Returns a file descriptor for the new socket, or -1 for errors.  */
int
DEFUN(socket, (domain, type, protocol),
      int domain AND enum __socket_type type AND int protocol)
{
  error_t err;
  socket_t sock, server;

  /* Find the socket server for DOMAIN.  */
  server = _hurd_socket_server (domain, 0);
  if (server == MACH_PORT_NULL)
    return -1;

  err = __socket_create (server, type, protocol, &sock);
  if (err == MACH_SEND_INVALID_DEST || err == MIG_SERVER_DIED)
    {
      /* On the first use of the socket server during the operation,
	 allow for the old server port dying.  */
      server = _hurd_socket_server (domain, 1);
      if (server == MACH_PORT_NULL)
	return -1;
      err = __socket_create (server, type, protocol, &sock);
    }

  if (err)
    return __hurd_fail (err);

  return _hurd_intern_fd (sock, O_IGNORE_CTTY, 1);
}