hurd/hurdports.c

   1 /* Copyright (C) 1991, 1992, 1993, 1994 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
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <hurd.h>
  20 #include <hurd/port.h>
  21
  22
  23 static inline mach_port_t
  24 get (const int idx)
  25 {
  26   mach_port_t result;
  27   error_t err = _hurd_ports_get (idx, &result);
  28
  29   if (err)
  30     return __hurd_fail (err), MACH_PORT_NULL;
  31   return result;
  32 }
  33 #define GET(type, what, idx) \
  34   type get##what (void) { return get (INIT_PORT_##idx); }
  35
  36 static inline int
  37 set (const int idx, mach_port_t new)
  38 {
  39   error_t err = _hurd_ports_set (idx, new);
  40   return err ? __hurd_fail (err) : 0;
  41 }
  42 #define SET(type, what, idx) \
  43   int set##what (type new) { return set (INIT_PORT_##idx, new); }
  44
  45 #define GETSET(type, what, idx) \
  46   GET (type, what, idx) SET (type, what, idx)
  47
  48 GETSET (process_t, proc, PROC)
  49 GETSET (mach_port_t, cttyid, CTTYID)
  50 GETSET (file_t, cwdir, CWDIR)
  51 GETSET (file_t, crdir, CRDIR)
  52 GETSET (auth_t, auth, AUTH)