hurd/ports-set.c

   1 /* Copyright (C) 1994-2021 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, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <hurd.h>
  19
  20 static error_t
  21 setbootstrap (mach_port_t newport)
  22 {
  23   return __task_set_special_port (__mach_task_self (),
  24                                   TASK_BOOTSTRAP_PORT,
  25                                   newport);
  26 }
  27
  28 extern error_t _hurd_setauth (auth_t);
  29 extern error_t _hurd_setproc (process_t);
  30 extern error_t _hurd_setcttyid (mach_port_t);
  31
  32 error_t (*_hurd_ports_setters[INIT_PORT_MAX]) (mach_port_t newport) =
  33   {
  34     [INIT_PORT_BOOTSTRAP] = setbootstrap,
  35     [INIT_PORT_AUTH] = _hurd_setauth,
  36     [INIT_PORT_PROC] = _hurd_setproc,
  37     [INIT_PORT_CTTYID] = _hurd_setcttyid,
  38   };
  39
  40
  41 error_t
  42 _hurd_ports_set (unsigned int which, mach_port_t newport)
  43 {
  44   error_t err;
  45   if (which >= _hurd_nports)
  46     return EINVAL;
  47   if (err = __mach_port_mod_refs (__mach_task_self (), newport,
  48                                   MACH_PORT_RIGHT_SEND, 1))
  49     return err;
  50   if (which >= INIT_PORT_MAX || _hurd_ports_setters[which] == NULL)
  51     {
  52       _hurd_port_set (&_hurd_ports[which], newport);
  53       return 0;
  54     }
  55   return (*_hurd_ports_setters[which]) (newport);
  56 }