hurd/ports-set.c

   1 /* Copyright (C) 1994, 1995, 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 <hurd.h>
  20
  21 static error_t
  22 setbootstrap (mach_port_t newport)
  23 {
  24   return __task_set_special_port (__mach_task_self (),
  25                                   TASK_BOOTSTRAP_PORT,
  26                                   newport);
  27 }
  28
  29 extern error_t _hurd_setauth (auth_t);
  30 extern error_t _hurd_setproc (process_t);
  31 extern error_t _hurd_setcttyid (mach_port_t);
  32
  33 error_t (*_hurd_ports_setters[INIT_PORT_MAX]) (mach_port_t newport) =
  34   {
  35     [INIT_PORT_BOOTSTRAP] = setbootstrap,
  36     [INIT_PORT_AUTH] = _hurd_setauth,
  37     [INIT_PORT_PROC] = _hurd_setproc,
  38     [INIT_PORT_CTTYID] = _hurd_setcttyid,
  39   };
  40
  41
  42 error_t
  43 _hurd_ports_set (unsigned int which, mach_port_t newport)
  44 {
  45   error_t err;
  46   if (which >= _hurd_nports)
  47     return EINVAL;
  48   if (err = __mach_port_mod_refs (__mach_task_self (), newport,
  49                                   MACH_PORT_RIGHT_SEND, 1))
  50     return err;
  51   if (which >= INIT_PORT_MAX || _hurd_ports_setters[which] == NULL)
  52     {
  53       _hurd_port_set (&_hurd_ports[which], newport);
  54       return 0;
  55     }
  56   return (*_hurd_ports_setters[which]) (newport);
  57 }