hurd/hurd/id.h

   1 /* User and group IDs.
   2    Copyright (C) 1993-2023 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 Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the 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    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _HURD_ID_H
  20
  21 #define _HURD_ID_H      1
  22 #include <features.h>
  23 #include <hurd/hurd_types.h>
  24 #include <errno.h>
  25 #include <bits/types/error_t.h>
  26
  27 #include <lock-intern.h>        /* For `struct mutex'.  */
  28
  29 /* Structure describing authorization data for the process.  */
  30
  31 struct hurd_id_data
  32   {
  33     struct mutex lock;
  34
  35     int valid;                  /* If following data are up to date.  */
  36
  37     struct
  38       {
  39         uid_t *uids;
  40         gid_t *gids;
  41         mach_msg_type_number_t nuids, ngids;
  42       } gen, aux;
  43
  44     auth_t rid_auth;            /* Cache used by access.  */
  45   };
  46
  47 /* Current data.  */
  48
  49 extern struct hurd_id_data _hurd_id;
  50
  51
  52 /* Update _hurd_id (caller should be holding the lock).  */
  53
  54 extern error_t _hurd_check_ids (void);
  55
  56
  57 #endif  /* hurd/id.h */