/*
 * Copyright (C) 2017 ~ 2018 Deepin Technology Co., Ltd.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef INSTALLER_SERVICE_BACKEND_CHROOT_H
#define INSTALLER_SERVICE_BACKEND_CHROOT_H

namespace installer {

// A helper class to enter/leave chroot environment.
// Separated from HooksManager class.
class Chroot {
 public:
  Chroot();

  // Chroot to |chroot_dir|.
  bool enterChroot(const char* chroot_dir);
  bool leaveChroot();

  // Whether current process is in chroot environment.
  bool inChrootEnv() const;

 private:
  // A file descriptor object used to escape chroot environment.
  int chroot_fd_;
};

}  // namespace installer

#endif  // INSTALLER_SERVICE_BACKEND_CHROOT_H
