hurd/hurd/id.h

   1 /* User and group IDs.
   2 Copyright (C) 1993, 1994 Free Software Foundation, Inc.
   3 This file is part of the GNU C Library.
   4
   5 The GNU C Library is free software; you can redistribute it and/or
   6 modify it under the terms of the GNU Library General Public License as
   7 published by the Free Software Foundation; either version 2 of the
   8 License, or (at your option) any later version.
   9
  10 The GNU C Library is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 Library General Public License for more details.
  14
  15 You should have received a copy of the GNU Library General Public
  16 License along with the GNU C Library; see the file COPYING.LIB.  If
  17 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  18 Cambridge, MA 02139, USA.  */
  19
  20 #ifndef _HURD_ID_H
  21
  22 #define _HURD_ID_H      1
  23 #include <features.h>
  24
  25 #include <cthreads.h>           /* For `struct mutex'.  */
  26
  27 /* Structure describing authorization data for the process.  */
  28
  29 struct hurd_id_data
  30   {
  31     struct mutex lock;
  32
  33     int valid;                  /* If following data are up to date.  */
  34
  35     struct
  36       {
  37         uid_t *uids;
  38         gid_t *gids;
  39         mach_msg_type_number_t nuids, ngids;
  40       } gen, aux;
  41
  42     auth_t rid_auth;            /* Cache used by access.  */
  43   };
  44
  45 /* Current data.  */
  46
  47 extern struct hurd_id_data _hurd_id;
  48
  49
  50 /* Update _hurd_id (caller should be holding the lock).  */
  51
  52 extern error_t _hurd_check_ids (void);
  53
  54
  55 #endif  /* hurd/id.h */