resources/prvl.cpp

   1 /* Quarn OS
   2  *
   3  * Access control
   4  *
   5  * Copyright (C) 2008-2009 Pawel Dziepak
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  */
  22
  23 #include "prvl.h"
  24
  25 using namespace resources;
  26
  27 prvl::prvl(){}
  28
  29 prvl::prvl(int uid, int mod) {
  30         owner = uid;
  31
  32         prvl_owner = (basic_prvls)(mod >> 8);
  33         prvl_group = (basic_prvls)(mod >> 4 & 0xf);
  34         prvl_other = (basic_prvls)(mod & 0xf);
  35 }
  36
  37 bool prvl::check_prvls(int uid, basic_prvls action) {
  38         if (owner == uid) {
  39                 if (prvl_owner & action)
  40                         return true;
  41                 else
  42                         return false;
  43         } else {
  44                 if (prvl_other & action)
  45                         return true;
  46                 else
  47                         return false;
  48        }
  49 }