src/acl.sig

   1 (* HCoop Domtool (http://hcoop.sourceforge.net/)
   2  * Copyright (c) 2006, Adam Chlipala
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program 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
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17  *)
  18
  19 (* Per-user access control lists for resources various *)
  20
  21 signature ACL = sig
  22
  23     type acl = {user : string,  (* The UNIX user being granted a permission *)
  24                 class : string, (* The type of permission granted *)
  25                 value : string} (* The object for which it is granted *)
  26
  27     val query : acl -> bool
  28     (* Is this permission granted? *)
  29
  30     val class : {user : string, class : string} -> DataStructures.StringSet.set
  31     (* For what objects does the user have the permission? *)
  32
  33     val grant : acl -> unit
  34     val revoke : acl -> unit
  35     (* Grant/ungrant the user the permission. *)
  36
  37     val read : string -> unit
  38     val write : string -> unit
  39     (* Read/write saved ACL state from/to a file *)
  40
  41 end