1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.os.storage; 18 19 /** 20 * Mount service local interface. 21 * 22 * @hide Only for use within the system server. 23 */ 24 public abstract class MountServiceInternal { 25 26 /** 27 * Policy that influences how external storage is mounted and reported. 28 */ 29 public interface ExternalStorageMountPolicy { 30 /** 31 * Gets the external storage mount mode for the given uid. 32 * 33 * @param uid The UID for which to determine mount mode. 34 * @param packageName The package in the UID for making the call. 35 * @return The mount mode. 36 * 37 * @see com.android.internal.os.Zygote#MOUNT_EXTERNAL_NONE 38 * @see com.android.internal.os.Zygote#MOUNT_EXTERNAL_DEFAULT 39 * @see com.android.internal.os.Zygote#MOUNT_EXTERNAL_READ 40 * @see com.android.internal.os.Zygote#MOUNT_EXTERNAL_WRITE 41 */ 42 public int getMountMode(int uid, String packageName); 43 44 /** 45 * Gets whether external storage should be reported to the given UID. 46 * 47 * @param uid The UID for which to determine whether it has external storage. 48 * @param packageName The package in the UID for making the call. 49 * @return Weather to report external storage. 50 * @return True to report the state of external storage, false to 51 * report it as unmounted. 52 */ 53 public boolean hasExternalStorage(int uid, String packageName); 54 } 55 56 /** 57 * Adds a policy for determining how external storage is mounted and reported. 58 * The mount mode is the most conservative result from querying all registered 59 * policies. Similarly, the reported state is the most conservative result from 60 * querying all registered policies. 61 * 62 * @param policy The policy to add. 63 */ 64 public abstract void addExternalStoragePolicy(ExternalStorageMountPolicy policy); 65 66 /** 67 * Notify the mount service that the mount policy for a UID changed. 68 * @param uid The UID for which policy changed. 69 * @param packageName The package in the UID for making the call. 70 */ 71 public abstract void onExternalStoragePolicyChanged(int uid, String packageName); 72 73 /** 74 * Gets the mount mode to use for a given UID as determined by consultin all 75 * policies. 76 * 77 * @param uid The UID for which to get mount mode. 78 * @param packageName The package in the UID for making the call. 79 * @return The mount mode. 80 */ 81 public abstract int getExternalStorageMountMode(int uid, String packageName); 82 } 83
