sysdeps/mach/hurd/connect.c

   1 /* Copyright (C) 1992, 1994, 1995, 1996, 1997 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 <hurd.h>
  21 #include <hurd/fd.h>
  22 #include <sys/socket.h>
  23 #include <hurd/socket.h>
  24 #include <sys/un.h>
  25 #include <hurd/ifsock.h>
  26
  27 /* Open a connection on socket FD to peer at ADDR (which LEN bytes long).
  28    For connectionless socket types, just set the default address to send to
  29    and the only address from which to accept transmissions.
  30    Return 0 on success, -1 for errors.  */
  31 int
  32 __connect (fd, addrarg, len)
  33      int fd;
  34      __CONST_SOCKADDR_ARG addrarg;
  35      size_t len;
  36 {
  37   error_t err;
  38   addr_port_t aport;
  39   const struct sockaddr_un *addr = addrarg.__sockaddr_un__;
  40
  41   if (addr->sun_family == AF_LOCAL)
  42     {
  43       /* For the local domain, we must look up the name as a file and talk
  44          to it with the ifsock protocol.  */
  45       file_t file = __file_name_lookup (addr->sun_path, 0, 0);
  46       if (file == MACH_PORT_NULL)
  47         return -1;
  48       err = __ifsock_getsockaddr (file, &aport);
  49       __mach_port_deallocate (__mach_task_self (), file);
  50       if (err == MIG_BAD_ID || err == EOPNOTSUPP)
  51         /* The file did not grok the ifsock protocol.  */
  52         err = ENOTSOCK;
  53       if (err)
  54         return __hurd_fail (err);
  55     }
  56   else
  57     err = EIEIO;
  58
  59   err = HURD_DPORT_USE (fd,
  60                         ({
  61                           if (err)
  62                             err = __socket_create_address (port,
  63                                                            addr->sun_family,
  64                                                            (char *) addr, len,
  65                                                            &aport);
  66                           if (! err)
  67                             {
  68                               err = __socket_connect (port, aport);
  69                               __mach_port_deallocate (__mach_task_self (),
  70                                                       aport);
  71                             }
  72                           err;
  73                         }));
  74
  75   return err ? __hurd_dfail (fd, err) : 0;
  76 }
  77
  78 weak_alias (__connect, connect)