1: /* Copyright (C) 1993,94,97,2001,02 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 <hurd.h>
   20: 
   21: /* The program might set these if it is the initial task
   22:    bootstrapped by the microkernel.  */
   23: 
   24: mach_port_t _hurd_host_priv, _hurd_device_master;
   25: 
   26: 
   27: kern_return_t
   28: __get_privileged_ports (mach_port_t *host_priv_ptr,
   29:                         device_t *device_master_ptr)
   30: {
   31:   if ((host_priv_ptr && _hurd_host_priv == MACH_PORT_NULL)
   32:       || (device_master_ptr && _hurd_device_master == MACH_PORT_NULL))
   33:     {
   34:       error_t err;
   35: 
   36:       if (_hurd_ports)
   37:         /* We have gotten some initial ports, so perhaps
   38:            we have a proc server to talk to.  */
   39:         err = __USEPORT (PROC, __proc_getprivports (port,
   40:                                                     &_hurd_host_priv,
   41:                                                     &_hurd_device_master));
   42:       else
   43:         return MACH_SEND_INVALID_DEST;
   44: 
   45:       if (err)
   46:         return err;
   47:     }
   48: 
   49:   if (host_priv_ptr)
   50:     {
   51:       error_t err = _hurd_host_priv == MACH_PORT_NULL ? 0
   52:         : __mach_port_mod_refs (mach_task_self (),
   53:                                 _hurd_host_priv, MACH_PORT_RIGHT_SEND, +1);
   54:       if (err)
   55:         return err;
   56:       *host_priv_ptr = _hurd_host_priv;
   57:     }
   58: 
   59:   if (device_master_ptr)
   60:     {
   61:       error_t err = _hurd_device_master == MACH_PORT_NULL ? 0
   62:         : __mach_port_mod_refs (mach_task_self (),
   63:                                 _hurd_device_master, MACH_PORT_RIGHT_SEND, +1);
   64:       if (err)
   65:         return err;
   66:       *device_master_ptr = _hurd_device_master;
   67:     }
   68: 
   69:   return KERN_SUCCESS;
   70: }
   71: weak_alias (__get_privileged_ports, get_privileged_ports)