sysdeps/mach/hurd/connect.c

   1 /* Copyright (C) 1992,94,95,96,97,2002 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 <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 #undef __connect
  28
  29 /* Open a connection on socket FD to peer at ADDR (which LEN bytes long).
  30    For connectionless socket types, just set the default address to send to
  31    and the only address from which to accept transmissions.
  32    Return 0 on success, -1 for errors.  */
  33 int
  34 __connect (int fd, __CONST_SOCKADDR_ARG addrarg, socklen_t len)
  35 {
  36   error_t err;
  37   addr_port_t aport;
  38   const struct sockaddr_un *addr = addrarg.__sockaddr_un__;
  39
  40   if (addr->sun_family == AF_LOCAL)
  41     {
  42       /* For the local domain, we must look up the name as a file and talk
  43          to it with the ifsock protocol.  */
  44       file_t file = __file_name_lookup (addr->sun_path, 0, 0);
  45       if (file == MACH_PORT_NULL)
  46         return -1;
  47       err = __ifsock_getsockaddr (file, &aport);
  48       __mach_port_deallocate (__mach_task_self (), file);
  49       if (err == MIG_BAD_ID || err == EOPNOTSUPP)
  50         /* The file did not grok the ifsock protocol.  */
  51         err = ENOTSOCK;
  52       if (err)
  53         return __hurd_fail (err);
  54     }
  55   else
  56     err = EIEIO;
  57
  58   err = HURD_DPORT_USE (fd,
  59                         ({
  60                           if (err)
  61                             err = __socket_create_address (port,
  62                                                            addr->sun_family,
  63                                                            (char *) addr, len,
  64                                                            &aport);
  65                           if (! err)
  66                             {
  67                               err = __socket_connect (port, aport);
  68                               __mach_port_deallocate (__mach_task_self (),
  69                                                       aport);
  70                             }
  71                           err;
  72                         }));
  73
  74   return err ? __hurd_dfail (fd, err) : 0;
  75 }
  76
  77 INTDEF(__connect)
  78 weak_alias (__connect, connect)