hurd/hurdports.c

   1 /* Copyright (C) 1991-2018 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    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <hurd.h>
  19 #include <hurd/port.h>
  20
  21
  22 static inline mach_port_t
  23 get (const int idx)
  24 {
  25   mach_port_t result;
  26   error_t err = _hurd_ports_get (idx, &result);
  27
  28   if (err)
  29     return __hurd_fail (err), MACH_PORT_NULL;
  30   return result;
  31 }
  32 #define GET(type, what, idx) \
  33   type get##what (void) { return get (INIT_PORT_##idx); }
  34
  35 static inline int
  36 set (const int idx, mach_port_t new)
  37 {
  38   error_t err = _hurd_ports_set (idx, new);
  39   return err ? __hurd_fail (err) : 0;
  40 }
  41 #define SET(type, what, idx) \
  42   int set##what (type new) { return set (INIT_PORT_##idx, new); }
  43
  44 #define GETSET(type, what, idx) \
  45   GET (type, what, idx) SET (type, what, idx)
  46
  47 GETSET (process_t, proc, PROC)
  48 GETSET (mach_port_t, cttyid, CTTYID)
  49 GETSET (file_t, cwdir, CWDIR)
  50 GETSET (file_t, crdir, CRDIR)
  51 GETSET (auth_t, auth, AUTH)