content: /*
   * Copyright (C) 2017 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.android.server;
  
  /**
   * Internal interface for storing and retrieving persistent data.
   */
  public interface PersistentDataBlockManagerInternal {
  
      /** Stores the handle to a lockscreen credential to be used for Factory Reset Protection. */
      void setFrpCredentialHandle(byte[] handle);
  
      /**
       * Retrieves handle to a lockscreen credential to be used for Factory Reset Protection.
       *
       * @throws IllegalStateException if the underlying storage is corrupt or inaccessible.
       */
      byte[] getFrpCredentialHandle();
  
      /** Stores the data used to enable the Test Harness Mode after factory-resetting. */
      void setTestHarnessModeData(byte[] data);
  
      /**
       * Retrieves the data used to place the device into Test Harness Mode.
       *
       * @throws IllegalStateException if the underlying storage is corrupt or inaccessible.
       */
      byte[] getTestHarnessModeData();
  
      /** Clear out the Test Harness Mode data. */
      void clearTestHarnessModeData();
  
      /** Update the OEM unlock enabled bit, bypassing user restriction checks. */
      void forceOemUnlockEnabled(boolean enabled);
  }
  