Kenny Root | be857d4 | 2010-08-18 15:59:25 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 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 | import android.os.Binder; |
| 20 | import android.os.IBinder; |
| 21 | import android.os.IInterface; |
| 22 | import android.os.Parcel; |
| 23 | import android.os.RemoteException; |
| 24 | |
| 25 | /** |
| 26 | * Callback class for receiving events from MountService. |
| 27 | * |
| 28 | * @hide - Applications should use IStorageEventListener for storage event |
| 29 | * callbacks. |
| 30 | */ |
| 31 | public interface IMountServiceListener extends IInterface { |
| 32 | /** Local-side IPC implementation stub class. */ |
| 33 | public static abstract class Stub extends Binder implements IMountServiceListener { |
| 34 | private static final String DESCRIPTOR = "IMountServiceListener"; |
| 35 | |
| 36 | /** Construct the stub at attach it to the interface. */ |
| 37 | public Stub() { |
| 38 | this.attachInterface(this, DESCRIPTOR); |
| 39 | } |
| 40 | |
| 41 | /** |
| 42 | * Cast an IBinder object into an IMountServiceListener interface, |
| 43 | * generating a proxy if needed. |
| 44 | */ |
| 45 | public static IMountServiceListener asInterface(IBinder obj) { |
| 46 | if ((obj == null)) { |
| 47 | return null; |
| 48 | } |
| 49 | IInterface iin = (IInterface) obj.queryLocalInterface(DESCRIPTOR); |
| 50 | if (((iin != null) && (iin instanceof IMountServiceListener))) { |
| 51 | return ((IMountServiceListener) iin); |
| 52 | } |
| 53 | return new IMountServiceListener.Stub.Proxy(obj); |
| 54 | } |
| 55 | |
| 56 | public IBinder asBinder() { |
| 57 | return this; |
| 58 | } |
| 59 | |
| 60 | @Override |
| 61 | public boolean onTransact(int code, Parcel data, Parcel reply, int flags) |
| 62 | throws RemoteException { |
| 63 | switch (code) { |
| 64 | case INTERFACE_TRANSACTION: { |
| 65 | reply.writeString(DESCRIPTOR); |
| 66 | return true; |
| 67 | } |
| 68 | case TRANSACTION_onUsbMassStorageConnectionChanged: { |
| 69 | data.enforceInterface(DESCRIPTOR); |
| 70 | boolean connected; |
| 71 | connected = (0 != data.readInt()); |
| 72 | this.onUsbMassStorageConnectionChanged(connected); |
| 73 | reply.writeNoException(); |
| 74 | return true; |
| 75 | } |
| 76 | case TRANSACTION_onStorageStateChanged: { |
| 77 | data.enforceInterface(DESCRIPTOR); |
Jeff Sharkey | 7151a9a | 2015-04-04 15:22:37 -0700 | [diff] [blame] | 78 | final String path = data.readString(); |
| 79 | final String oldState = data.readString(); |
| 80 | final String newState = data.readString(); |
Kenny Root | be857d4 | 2010-08-18 15:59:25 -0700 | [diff] [blame] | 81 | this.onStorageStateChanged(path, oldState, newState); |
| 82 | reply.writeNoException(); |
| 83 | return true; |
| 84 | } |
Jeff Sharkey | 7151a9a | 2015-04-04 15:22:37 -0700 | [diff] [blame] | 85 | case TRANSACTION_onVolumeStateChanged: { |
| 86 | data.enforceInterface(DESCRIPTOR); |
| 87 | final VolumeInfo vol = (VolumeInfo) data.readParcelable(null); |
| 88 | final int oldState = data.readInt(); |
| 89 | final int newState = data.readInt(); |
| 90 | onVolumeStateChanged(vol, oldState, newState); |
| 91 | reply.writeNoException(); |
| 92 | return true; |
| 93 | } |
Jeff Sharkey | d95d3bf | 2015-04-14 21:39:44 -0700 | [diff] [blame] | 94 | case TRANSACTION_onVolumeMetadataChanged: { |
| 95 | data.enforceInterface(DESCRIPTOR); |
| 96 | final VolumeInfo vol = (VolumeInfo) data.readParcelable(null); |
| 97 | onVolumeMetadataChanged(vol); |
| 98 | reply.writeNoException(); |
| 99 | return true; |
| 100 | } |
Kenny Root | be857d4 | 2010-08-18 15:59:25 -0700 | [diff] [blame] | 101 | } |
| 102 | return super.onTransact(code, data, reply, flags); |
| 103 | } |
| 104 | |
| 105 | private static class Proxy implements IMountServiceListener { |
| 106 | private IBinder mRemote; |
| 107 | |
| 108 | Proxy(IBinder remote) { |
| 109 | mRemote = remote; |
| 110 | } |
| 111 | |
| 112 | public IBinder asBinder() { |
| 113 | return mRemote; |
| 114 | } |
| 115 | |
| 116 | public String getInterfaceDescriptor() { |
| 117 | return DESCRIPTOR; |
| 118 | } |
| 119 | |
| 120 | /** |
| 121 | * Detection state of USB Mass Storage has changed |
| 122 | * |
| 123 | * @param available true if a UMS host is connected. |
| 124 | */ |
| 125 | public void onUsbMassStorageConnectionChanged(boolean connected) throws RemoteException { |
| 126 | Parcel _data = Parcel.obtain(); |
| 127 | Parcel _reply = Parcel.obtain(); |
| 128 | try { |
| 129 | _data.writeInterfaceToken(DESCRIPTOR); |
| 130 | _data.writeInt(((connected) ? (1) : (0))); |
| 131 | mRemote.transact(Stub.TRANSACTION_onUsbMassStorageConnectionChanged, _data, |
Jeff Sharkey | 7151a9a | 2015-04-04 15:22:37 -0700 | [diff] [blame] | 132 | _reply, android.os.IBinder.FLAG_ONEWAY); |
Kenny Root | be857d4 | 2010-08-18 15:59:25 -0700 | [diff] [blame] | 133 | _reply.readException(); |
| 134 | } finally { |
| 135 | _reply.recycle(); |
| 136 | _data.recycle(); |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | /** |
| 141 | * Storage state has changed. |
| 142 | * |
| 143 | * @param path The volume mount path. |
| 144 | * @param oldState The old state of the volume. |
| 145 | * @param newState The new state of the volume. Note: State is one |
| 146 | * of the values returned by |
| 147 | * Environment.getExternalStorageState() |
| 148 | */ |
| 149 | public void onStorageStateChanged(String path, String oldState, String newState) |
| 150 | throws RemoteException { |
| 151 | Parcel _data = Parcel.obtain(); |
| 152 | Parcel _reply = Parcel.obtain(); |
| 153 | try { |
| 154 | _data.writeInterfaceToken(DESCRIPTOR); |
| 155 | _data.writeString(path); |
| 156 | _data.writeString(oldState); |
| 157 | _data.writeString(newState); |
Jeff Sharkey | 7151a9a | 2015-04-04 15:22:37 -0700 | [diff] [blame] | 158 | mRemote.transact(Stub.TRANSACTION_onStorageStateChanged, _data, _reply, |
| 159 | android.os.IBinder.FLAG_ONEWAY); |
| 160 | _reply.readException(); |
| 161 | } finally { |
| 162 | _reply.recycle(); |
| 163 | _data.recycle(); |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | @Override |
| 168 | public void onVolumeStateChanged(VolumeInfo vol, int oldState, int newState) |
| 169 | throws RemoteException { |
| 170 | Parcel _data = Parcel.obtain(); |
| 171 | Parcel _reply = Parcel.obtain(); |
| 172 | try { |
| 173 | _data.writeInterfaceToken(DESCRIPTOR); |
| 174 | _data.writeParcelable(vol, 0); |
| 175 | _data.writeInt(oldState); |
| 176 | _data.writeInt(newState); |
| 177 | mRemote.transact(Stub.TRANSACTION_onVolumeStateChanged, _data, _reply, |
| 178 | android.os.IBinder.FLAG_ONEWAY); |
Kenny Root | be857d4 | 2010-08-18 15:59:25 -0700 | [diff] [blame] | 179 | _reply.readException(); |
| 180 | } finally { |
| 181 | _reply.recycle(); |
| 182 | _data.recycle(); |
| 183 | } |
| 184 | } |
Jeff Sharkey | d95d3bf | 2015-04-14 21:39:44 -0700 | [diff] [blame] | 185 | |
| 186 | @Override |
| 187 | public void onVolumeMetadataChanged(VolumeInfo vol) throws RemoteException { |
| 188 | Parcel _data = Parcel.obtain(); |
| 189 | Parcel _reply = Parcel.obtain(); |
| 190 | try { |
| 191 | _data.writeInterfaceToken(DESCRIPTOR); |
| 192 | _data.writeParcelable(vol, 0); |
| 193 | mRemote.transact(Stub.TRANSACTION_onVolumeMetadataChanged, _data, _reply, |
| 194 | android.os.IBinder.FLAG_ONEWAY); |
| 195 | _reply.readException(); |
| 196 | } finally { |
| 197 | _reply.recycle(); |
| 198 | _data.recycle(); |
| 199 | } |
| 200 | } |
Kenny Root | be857d4 | 2010-08-18 15:59:25 -0700 | [diff] [blame] | 201 | } |
| 202 | |
| 203 | static final int TRANSACTION_onUsbMassStorageConnectionChanged = (IBinder.FIRST_CALL_TRANSACTION + 0); |
| 204 | |
| 205 | static final int TRANSACTION_onStorageStateChanged = (IBinder.FIRST_CALL_TRANSACTION + 1); |
Jeff Sharkey | 7151a9a | 2015-04-04 15:22:37 -0700 | [diff] [blame] | 206 | |
| 207 | static final int TRANSACTION_onVolumeStateChanged = (IBinder.FIRST_CALL_TRANSACTION + 2); |
Jeff Sharkey | d95d3bf | 2015-04-14 21:39:44 -0700 | [diff] [blame] | 208 | static final int TRANSACTION_onVolumeMetadataChanged = (IBinder.FIRST_CALL_TRANSACTION + 3); |
Kenny Root | be857d4 | 2010-08-18 15:59:25 -0700 | [diff] [blame] | 209 | } |
| 210 | |
| 211 | /** |
| 212 | * Detection state of USB Mass Storage has changed |
| 213 | * |
| 214 | * @param available true if a UMS host is connected. |
| 215 | */ |
| 216 | public void onUsbMassStorageConnectionChanged(boolean connected) throws RemoteException; |
| 217 | |
| 218 | /** |
| 219 | * Storage state has changed. |
| 220 | * |
| 221 | * @param path The volume mount path. |
| 222 | * @param oldState The old state of the volume. |
| 223 | * @param newState The new state of the volume. Note: State is one of the |
| 224 | * values returned by Environment.getExternalStorageState() |
| 225 | */ |
| 226 | public void onStorageStateChanged(String path, String oldState, String newState) |
| 227 | throws RemoteException; |
Jeff Sharkey | 7151a9a | 2015-04-04 15:22:37 -0700 | [diff] [blame] | 228 | |
| 229 | public void onVolumeStateChanged(VolumeInfo vol, int oldState, int newState) |
| 230 | throws RemoteException; |
Jeff Sharkey | d95d3bf | 2015-04-14 21:39:44 -0700 | [diff] [blame] | 231 | |
| 232 | public void onVolumeMetadataChanged(VolumeInfo vol) throws RemoteException; |
Kenny Root | be857d4 | 2010-08-18 15:59:25 -0700 | [diff] [blame] | 233 | } |