| /* |
| * Copyright (C) 2007 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; |
| |
| import com.android.internal.app.IMediaContainerService; |
| import com.android.internal.util.XmlUtils; |
| import com.android.server.am.ActivityManagerService; |
| import com.android.server.pm.PackageManagerService; |
| import com.android.server.NativeDaemonConnector.Command; |
| |
| import android.Manifest; |
| import android.content.BroadcastReceiver; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.ServiceConnection; |
| import android.content.pm.PackageManager; |
| import android.content.res.ObbInfo; |
| import android.content.res.Resources; |
| import android.content.res.TypedArray; |
| import android.content.res.XmlResourceParser; |
| import android.hardware.usb.UsbManager; |
| import android.net.Uri; |
| import android.os.Binder; |
| import android.os.Environment; |
| import android.os.Handler; |
| import android.os.HandlerThread; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.Parcelable; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.SystemClock; |
| import android.os.SystemProperties; |
| import android.os.UserId; |
| import android.os.storage.IMountService; |
| import android.os.storage.IMountServiceListener; |
| import android.os.storage.IMountShutdownObserver; |
| import android.os.storage.IObbActionListener; |
| import android.os.storage.OnObbStateChangeListener; |
| import android.os.storage.StorageResultCode; |
| import android.os.storage.StorageVolume; |
| import android.text.TextUtils; |
| import android.util.AttributeSet; |
| import android.util.Slog; |
| import android.util.Xml; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| |
| import java.io.FileDescriptor; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.math.BigInteger; |
| import java.security.NoSuchAlgorithmException; |
| import java.security.spec.InvalidKeySpecException; |
| import java.security.spec.KeySpec; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| import java.util.Set; |
| |
| import javax.crypto.SecretKey; |
| import javax.crypto.SecretKeyFactory; |
| import javax.crypto.spec.PBEKeySpec; |
| |
| /** |
| * MountService implements back-end services for platform storage |
| * management. |
| * @hide - Applications should use android.os.storage.StorageManager |
| * to access the MountService. |
| */ |
| class MountService extends IMountService.Stub |
| implements INativeDaemonConnectorCallbacks, Watchdog.Monitor { |
| |
| private static final boolean LOCAL_LOGD = false; |
| private static final boolean DEBUG_UNMOUNT = false; |
| private static final boolean DEBUG_EVENTS = false; |
| private static final boolean DEBUG_OBB = false; |
| |
| // Disable this since it messes up long-running cryptfs operations. |
| private static final boolean WATCHDOG_ENABLE = false; |
| |
| private static final String TAG = "MountService"; |
| |
| private static final String VOLD_TAG = "VoldConnector"; |
| |
| /** Maximum number of ASEC containers allowed to be mounted. */ |
| private static final int MAX_CONTAINERS = 250; |
| |
| /* |
| * Internal vold volume state constants |
| */ |
| class VolumeState { |
| public static final int Init = -1; |
| public static final int NoMedia = 0; |
| public static final int Idle = 1; |
| public static final int Pending = 2; |
| public static final int Checking = 3; |
| public static final int Mounted = 4; |
| public static final int Unmounting = 5; |
| public static final int Formatting = 6; |
| public static final int Shared = 7; |
| public static final int SharedMnt = 8; |
| } |
| |
| /* |
| * Internal vold response code constants |
| */ |
| class VoldResponseCode { |
| /* |
| * 100 series - Requestion action was initiated; expect another reply |
| * before proceeding with a new command. |
| */ |
| public static final int VolumeListResult = 110; |
| public static final int AsecListResult = 111; |
| public static final int StorageUsersListResult = 112; |
| |
| /* |
| * 200 series - Requestion action has been successfully completed. |
| */ |
| public static final int ShareStatusResult = 210; |
| public static final int AsecPathResult = 211; |
| public static final int ShareEnabledResult = 212; |
| |
| /* |
| * 400 series - Command was accepted, but the requested action |
| * did not take place. |
| */ |
| public static final int OpFailedNoMedia = 401; |
| public static final int OpFailedMediaBlank = 402; |
| public static final int OpFailedMediaCorrupt = 403; |
| public static final int OpFailedVolNotMounted = 404; |
| public static final int OpFailedStorageBusy = 405; |
| public static final int OpFailedStorageNotFound = 406; |
| |
| /* |
| * 600 series - Unsolicited broadcasts. |
| */ |
| public static final int VolumeStateChange = 605; |
| public static final int VolumeDiskInserted = 630; |
| public static final int VolumeDiskRemoved = 631; |
| public static final int VolumeBadRemoval = 632; |
| } |
| |
| private Context mContext; |
| private NativeDaemonConnector mConnector; |
| private final ArrayList<StorageVolume> mVolumes = new ArrayList<StorageVolume>(); |
| private StorageVolume mPrimaryVolume; |
| private final HashMap<String, String> mVolumeStates = new HashMap<String, String>(); |
| private final HashMap<String, StorageVolume> mVolumeMap = new HashMap<String, StorageVolume>(); |
| private String mExternalStoragePath; |
| private PackageManagerService mPms; |
| private boolean mUmsEnabling; |
| private boolean mUmsAvailable = false; |
| // Used as a lock for methods that register/unregister listeners. |
| final private ArrayList<MountServiceBinderListener> mListeners = |
| new ArrayList<MountServiceBinderListener>(); |
| private boolean mBooted = false; |
| private boolean mReady = false; |
| private boolean mSendUmsConnectedOnBoot = false; |
| // true if we should fake MEDIA_MOUNTED state for external storage |
| private boolean mEmulateExternalStorage = false; |
| |
| /** |
| * Private hash of currently mounted secure containers. |
| * Used as a lock in methods to manipulate secure containers. |
| */ |
| final private HashSet<String> mAsecMountSet = new HashSet<String>(); |
| |
| /** |
| * The size of the crypto algorithm key in bits for OBB files. Currently |
| * Twofish is used which takes 128-bit keys. |
| */ |
| private static final int CRYPTO_ALGORITHM_KEY_SIZE = 128; |
| |
| /** |
| * The number of times to run SHA1 in the PBKDF2 function for OBB files. |
| * 1024 is reasonably secure and not too slow. |
| */ |
| private static final int PBKDF2_HASH_ROUNDS = 1024; |
| |
| /** |
| * Mounted OBB tracking information. Used to track the current state of all |
| * OBBs. |
| */ |
| final private Map<IBinder, List<ObbState>> mObbMounts = new HashMap<IBinder, List<ObbState>>(); |
| final private Map<String, ObbState> mObbPathToStateMap = new HashMap<String, ObbState>(); |
| |
| class ObbState implements IBinder.DeathRecipient { |
| public ObbState(String filename, int callerUid, IObbActionListener token, int nonce) |
| throws RemoteException { |
| this.filename = filename; |
| this.callerUid = callerUid; |
| this.token = token; |
| this.nonce = nonce; |
| } |
| |
| // OBB source filename |
| String filename; |
| |
| // Binder.callingUid() |
| final public int callerUid; |
| |
| // Token of remote Binder caller |
| final IObbActionListener token; |
| |
| // Identifier to pass back to the token |
| final int nonce; |
| |
| public IBinder getBinder() { |
| return token.asBinder(); |
| } |
| |
| @Override |
| public void binderDied() { |
| ObbAction action = new UnmountObbAction(this, true); |
| mObbActionHandler.sendMessage(mObbActionHandler.obtainMessage(OBB_RUN_ACTION, action)); |
| } |
| |
| public void link() throws RemoteException { |
| getBinder().linkToDeath(this, 0); |
| } |
| |
| public void unlink() { |
| getBinder().unlinkToDeath(this, 0); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder("ObbState{"); |
| sb.append("filename="); |
| sb.append(filename); |
| sb.append(",token="); |
| sb.append(token.toString()); |
| sb.append(",callerUid="); |
| sb.append(callerUid); |
| sb.append('}'); |
| return sb.toString(); |
| } |
| } |
| |
| // OBB Action Handler |
| final private ObbActionHandler mObbActionHandler; |
| |
| // OBB action handler messages |
| private static final int OBB_RUN_ACTION = 1; |
| private static final int OBB_MCS_BOUND = 2; |
| private static final int OBB_MCS_UNBIND = 3; |
| private static final int OBB_MCS_RECONNECT = 4; |
| private static final int OBB_FLUSH_MOUNT_STATE = 5; |
| |
| /* |
| * Default Container Service information |
| */ |
| static final ComponentName DEFAULT_CONTAINER_COMPONENT = new ComponentName( |
| "com.android.defcontainer", "com.android.defcontainer.DefaultContainerService"); |
| |
| final private DefaultContainerConnection mDefContainerConn = new DefaultContainerConnection(); |
| |
| class DefaultContainerConnection implements ServiceConnection { |
| public void onServiceConnected(ComponentName name, IBinder service) { |
| if (DEBUG_OBB) |
| Slog.i(TAG, "onServiceConnected"); |
| IMediaContainerService imcs = IMediaContainerService.Stub.asInterface(service); |
| mObbActionHandler.sendMessage(mObbActionHandler.obtainMessage(OBB_MCS_BOUND, imcs)); |
| } |
| |
| public void onServiceDisconnected(ComponentName name) { |
| if (DEBUG_OBB) |
| Slog.i(TAG, "onServiceDisconnected"); |
| } |
| }; |
| |
| // Used in the ObbActionHandler |
| private IMediaContainerService mContainerService = null; |
| |
| // Handler messages |
| private static final int H_UNMOUNT_PM_UPDATE = 1; |
| private static final int H_UNMOUNT_PM_DONE = 2; |
| private static final int H_UNMOUNT_MS = 3; |
| private static final int RETRY_UNMOUNT_DELAY = 30; // in ms |
| private static final int MAX_UNMOUNT_RETRIES = 4; |
| |
| class UnmountCallBack { |
| final String path; |
| final boolean force; |
| final boolean removeEncryption; |
| int retries; |
| |
| UnmountCallBack(String path, boolean force, boolean removeEncryption) { |
| retries = 0; |
| this.path = path; |
| this.force = force; |
| this.removeEncryption = removeEncryption; |
| } |
| |
| void handleFinished() { |
| if (DEBUG_UNMOUNT) Slog.i(TAG, "Unmounting " + path); |
| doUnmountVolume(path, true, removeEncryption); |
| } |
| } |
| |
| class UmsEnableCallBack extends UnmountCallBack { |
| final String method; |
| |
| UmsEnableCallBack(String path, String method, boolean force) { |
| super(path, force, false); |
| this.method = method; |
| } |
| |
| @Override |
| void handleFinished() { |
| super.handleFinished(); |
| doShareUnshareVolume(path, method, true); |
| } |
| } |
| |
| class ShutdownCallBack extends UnmountCallBack { |
| IMountShutdownObserver observer; |
| ShutdownCallBack(String path, IMountShutdownObserver observer) { |
| super(path, true, false); |
| this.observer = observer; |
| } |
| |
| @Override |
| void handleFinished() { |
| int ret = doUnmountVolume(path, true, removeEncryption); |
| if (observer != null) { |
| try { |
| observer.onShutDownComplete(ret); |
| } catch (RemoteException e) { |
| Slog.w(TAG, "RemoteException when shutting down"); |
| } |
| } |
| } |
| } |
| |
| class MountServiceHandler extends Handler { |
| ArrayList<UnmountCallBack> mForceUnmounts = new ArrayList<UnmountCallBack>(); |
| boolean mUpdatingStatus = false; |
| |
| MountServiceHandler(Looper l) { |
| super(l); |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case H_UNMOUNT_PM_UPDATE: { |
| if (DEBUG_UNMOUNT) Slog.i(TAG, "H_UNMOUNT_PM_UPDATE"); |
| UnmountCallBack ucb = (UnmountCallBack) msg.obj; |
| mForceUnmounts.add(ucb); |
| if (DEBUG_UNMOUNT) Slog.i(TAG, " registered = " + mUpdatingStatus); |
| // Register only if needed. |
| if (!mUpdatingStatus) { |
| if (DEBUG_UNMOUNT) Slog.i(TAG, "Updating external media status on PackageManager"); |
| mUpdatingStatus = true; |
| mPms.updateExternalMediaStatus(false, true); |
| } |
| break; |
| } |
| case H_UNMOUNT_PM_DONE: { |
| if (DEBUG_UNMOUNT) Slog.i(TAG, "H_UNMOUNT_PM_DONE"); |
| if (DEBUG_UNMOUNT) Slog.i(TAG, "Updated status. Processing requests"); |
| mUpdatingStatus = false; |
| int size = mForceUnmounts.size(); |
| int sizeArr[] = new int[size]; |
| int sizeArrN = 0; |
| // Kill processes holding references first |
| ActivityManagerService ams = (ActivityManagerService) |
| ServiceManager.getService("activity"); |
| for (int i = 0; i < size; i++) { |
| UnmountCallBack ucb = mForceUnmounts.get(i); |
| String path = ucb.path; |
| boolean done = false; |
| if (!ucb.force) { |
| done = true; |
| } else { |
| int pids[] = getStorageUsers(path); |
| if (pids == null || pids.length == 0) { |
| done = true; |
| } else { |
| // Eliminate system process here? |
| ams.killPids(pids, "unmount media", true); |
| // Confirm if file references have been freed. |
| pids = getStorageUsers(path); |
| if (pids == null || pids.length == 0) { |
| done = true; |
| } |
| } |
| } |
| if (!done && (ucb.retries < MAX_UNMOUNT_RETRIES)) { |
| // Retry again |
| Slog.i(TAG, "Retrying to kill storage users again"); |
| mHandler.sendMessageDelayed( |
| mHandler.obtainMessage(H_UNMOUNT_PM_DONE, |
| ucb.retries++), |
| RETRY_UNMOUNT_DELAY); |
| } else { |
| if (ucb.retries >= MAX_UNMOUNT_RETRIES) { |
| Slog.i(TAG, "Failed to unmount media inspite of " + |
| MAX_UNMOUNT_RETRIES + " retries. Forcibly killing processes now"); |
| } |
| sizeArr[sizeArrN++] = i; |
| mHandler.sendMessage(mHandler.obtainMessage(H_UNMOUNT_MS, |
| ucb)); |
| } |
| } |
| // Remove already processed elements from list. |
| for (int i = (sizeArrN-1); i >= 0; i--) { |
| mForceUnmounts.remove(sizeArr[i]); |
| } |
| break; |
| } |
| case H_UNMOUNT_MS : { |
| if (DEBUG_UNMOUNT) Slog.i(TAG, "H_UNMOUNT_MS"); |
| UnmountCallBack ucb = (UnmountCallBack) msg.obj; |
| ucb.handleFinished(); |
| break; |
| } |
| } |
| } |
| }; |
| final private HandlerThread mHandlerThread; |
| final private Handler mHandler; |
| |
| private void waitForReady() { |
| while (mReady == false) { |
| for (int retries = 5; retries > 0; retries--) { |
| if (mReady) { |
| return; |
| } |
| SystemClock.sleep(1000); |
| } |
| Slog.w(TAG, "Waiting too long for mReady!"); |
| } |
| } |
| |
| private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| String action = intent.getAction(); |
| |
| if (action.equals(Intent.ACTION_BOOT_COMPLETED)) { |
| mBooted = true; |
| |
| /* |
| * In the simulator, we need to broadcast a volume mounted event |
| * to make the media scanner run. |
| */ |
| if ("simulator".equals(SystemProperties.get("ro.product.device"))) { |
| notifyVolumeStateChange(null, "/sdcard", VolumeState.NoMedia, |
| VolumeState.Mounted); |
| return; |
| } |
| new Thread() { |
| @Override |
| public void run() { |
| try { |
| // it is not safe to call vold with mVolumeStates locked |
| // so we make a copy of the paths and states and process them |
| // outside the lock |
| String[] paths; |
| String[] states; |
| int count; |
| synchronized (mVolumeStates) { |
| Set<String> keys = mVolumeStates.keySet(); |
| count = keys.size(); |
| paths = keys.toArray(new String[count]); |
| states = new String[count]; |
| for (int i = 0; i < count; i++) { |
| states[i] = mVolumeStates.get(paths[i]); |
| } |
| } |
| |
| for (int i = 0; i < count; i++) { |
| String path = paths[i]; |
| String state = states[i]; |
| |
| if (state.equals(Environment.MEDIA_UNMOUNTED)) { |
| int rc = doMountVolume(path); |
| if (rc != StorageResultCode.OperationSucceeded) { |
| Slog.e(TAG, String.format("Boot-time mount failed (%d)", |
| rc)); |
| } |
| } else if (state.equals(Environment.MEDIA_SHARED)) { |
| /* |
| * Bootstrap UMS enabled state since vold indicates |
| * the volume is shared (runtime restart while ums enabled) |
| */ |
| notifyVolumeStateChange(null, path, VolumeState.NoMedia, |
| VolumeState.Shared); |
| } |
| } |
| |
| /* notify external storage has mounted to trigger media scanner */ |
| if (mEmulateExternalStorage) { |
| notifyVolumeStateChange(null, |
| Environment.getExternalStorageDirectory().getPath(), |
| VolumeState.NoMedia, VolumeState.Mounted); |
| } |
| |
| /* |
| * If UMS was connected on boot, send the connected event |
| * now that we're up. |
| */ |
| if (mSendUmsConnectedOnBoot) { |
| sendUmsIntent(true); |
| mSendUmsConnectedOnBoot = false; |
| } |
| } catch (Exception ex) { |
| Slog.e(TAG, "Boot-time mount exception", ex); |
| } |
| } |
| }.start(); |
| } else if (action.equals(UsbManager.ACTION_USB_STATE)) { |
| boolean available = (intent.getBooleanExtra(UsbManager.USB_CONNECTED, false) && |
| intent.getBooleanExtra(UsbManager.USB_FUNCTION_MASS_STORAGE, false)); |
| notifyShareAvailabilityChange(available); |
| } |
| } |
| }; |
| private final class MountServiceBinderListener implements IBinder.DeathRecipient { |
| final IMountServiceListener mListener; |
| |
| MountServiceBinderListener(IMountServiceListener listener) { |
| mListener = listener; |
| |
| } |
| |
| public void binderDied() { |
| if (LOCAL_LOGD) Slog.d(TAG, "An IMountServiceListener has died!"); |
| synchronized (mListeners) { |
| mListeners.remove(this); |
| mListener.asBinder().unlinkToDeath(this, 0); |
| } |
| } |
| } |
| |
| private void doShareUnshareVolume(String path, String method, boolean enable) { |
| // TODO: Add support for multiple share methods |
| if (!method.equals("ums")) { |
| throw new IllegalArgumentException(String.format("Method %s not supported", method)); |
| } |
| |
| try { |
| mConnector.execute("volume", enable ? "share" : "unshare", path, method); |
| } catch (NativeDaemonConnectorException e) { |
| Slog.e(TAG, "Failed to share/unshare", e); |
| } |
| } |
| |
| private void updatePublicVolumeState(String path, String state) { |
| String oldState; |
| synchronized(mVolumeStates) { |
| oldState = mVolumeStates.put(path, state); |
| } |
| if (state.equals(oldState)) { |
| Slog.w(TAG, String.format("Duplicate state transition (%s -> %s) for %s", |
| state, state, path)); |
| return; |
| } |
| |
| Slog.d(TAG, "volume state changed for " + path + " (" + oldState + " -> " + state + ")"); |
| |
| if (path.equals(mExternalStoragePath)) { |
| // Update state on PackageManager, but only of real events |
| if (!mEmulateExternalStorage) { |
| if (Environment.MEDIA_UNMOUNTED.equals(state)) { |
| mPms.updateExternalMediaStatus(false, false); |
| |
| /* |
| * Some OBBs might have been unmounted when this volume was |
| * unmounted, so send a message to the handler to let it know to |
| * remove those from the list of mounted OBBS. |
| */ |
| mObbActionHandler.sendMessage(mObbActionHandler.obtainMessage( |
| OBB_FLUSH_MOUNT_STATE, path)); |
| } else if (Environment.MEDIA_MOUNTED.equals(state)) { |
| mPms.updateExternalMediaStatus(true, false); |
| } |
| } |
| } |
| synchronized (mListeners) { |
| for (int i = mListeners.size() -1; i >= 0; i--) { |
| MountServiceBinderListener bl = mListeners.get(i); |
| try { |
| bl.mListener.onStorageStateChanged(path, oldState, state); |
| } catch (RemoteException rex) { |
| Slog.e(TAG, "Listener dead"); |
| mListeners.remove(i); |
| } catch (Exception ex) { |
| Slog.e(TAG, "Listener failed", ex); |
| } |
| } |
| } |
| } |
| |
| /** |
| * |
| * Callback from NativeDaemonConnector |
| */ |
| public void onDaemonConnected() { |
| /* |
| * Since we'll be calling back into the NativeDaemonConnector, |
| * we need to do our work in a new thread. |
| */ |
| new Thread() { |
| @Override |
| public void run() { |
| /** |
| * Determine media state and UMS detection status |
| */ |
| try { |
| final String[] vols = NativeDaemonEvent.filterMessageList( |
| mConnector.executeForList("volume", "list"), |
| VoldResponseCode.VolumeListResult); |
| for (String volstr : vols) { |
| String[] tok = volstr.split(" "); |
| // FMT: <label> <mountpoint> <state> |
| String path = tok[1]; |
| String state = Environment.MEDIA_REMOVED; |
| |
| int st = Integer.parseInt(tok[2]); |
| if (st == VolumeState.NoMedia) { |
| state = Environment.MEDIA_REMOVED; |
| } else if (st == VolumeState.Idle) { |
| state = Environment.MEDIA_UNMOUNTED; |
| } else if (st == VolumeState.Mounted) { |
| state = Environment.MEDIA_MOUNTED; |
| Slog.i(TAG, "Media already mounted on daemon connection"); |
| } else if (st == VolumeState.Shared) { |
| state = Environment.MEDIA_SHARED; |
| Slog.i(TAG, "Media shared on daemon connection"); |
| } else { |
| throw new Exception(String.format("Unexpected state %d", st)); |
| } |
| |
| if (state != null) { |
| if (DEBUG_EVENTS) Slog.i(TAG, "Updating valid state " + state); |
| updatePublicVolumeState(path, state); |
| } |
| } |
| } catch (Exception e) { |
| Slog.e(TAG, "Error processing initial volume state", e); |
| updatePublicVolumeState(mExternalStoragePath, Environment.MEDIA_REMOVED); |
| } |
| |
| /* |
| * Now that we've done our initialization, release |
| * the hounds! |
| */ |
| mReady = true; |
| } |
| }.start(); |
| } |
| |
| /** |
| * Callback from NativeDaemonConnector |
| */ |
| public boolean onEvent(int code, String raw, String[] cooked) { |
| if (DEBUG_EVENTS) { |
| StringBuilder builder = new StringBuilder(); |
| builder.append("onEvent::"); |
| builder.append(" raw= " + raw); |
| if (cooked != null) { |
| builder.append(" cooked = " ); |
| for (String str : cooked) { |
| builder.append(" " + str); |
| } |
| } |
| Slog.i(TAG, builder.toString()); |
| } |
| if (code == VoldResponseCode.VolumeStateChange) { |
| /* |
| * One of the volumes we're managing has changed state. |
| * Format: "NNN Volume <label> <path> state changed |
| * from <old_#> (<old_str>) to <new_#> (<new_str>)" |
| */ |
| notifyVolumeStateChange( |
| cooked[2], cooked[3], Integer.parseInt(cooked[7]), |
| Integer.parseInt(cooked[10])); |
| } else if ((code == VoldResponseCode.VolumeDiskInserted) || |
| (code == VoldResponseCode.VolumeDiskRemoved) || |
| (code == VoldResponseCode.VolumeBadRemoval)) { |
| // FMT: NNN Volume <label> <mountpoint> disk inserted (<major>:<minor>) |
| // FMT: NNN Volume <label> <mountpoint> disk removed (<major>:<minor>) |
| // FMT: NNN Volume <label> <mountpoint> bad removal (<major>:<minor>) |
| String action = null; |
| final String label = cooked[2]; |
| final String path = cooked[3]; |
| int major = -1; |
| int minor = -1; |
| |
| try { |
| String devComp = cooked[6].substring(1, cooked[6].length() -1); |
| String[] devTok = devComp.split(":"); |
| major = Integer.parseInt(devTok[0]); |
| minor = Integer.parseInt(devTok[1]); |
| } catch (Exception ex) { |
| Slog.e(TAG, "Failed to parse major/minor", ex); |
| } |
| |
| if (code == VoldResponseCode.VolumeDiskInserted) { |
| new Thread() { |
| @Override |
| public void run() { |
| try { |
| int rc; |
| if ((rc = doMountVolume(path)) != StorageResultCode.OperationSucceeded) { |
| Slog.w(TAG, String.format("Insertion mount failed (%d)", rc)); |
| } |
| } catch (Exception ex) { |
| Slog.w(TAG, "Failed to mount media on insertion", ex); |
| } |
| } |
| }.start(); |
| } else if (code == VoldResponseCode.VolumeDiskRemoved) { |
| /* |
| * This event gets trumped if we're already in BAD_REMOVAL state |
| */ |
| if (getVolumeState(path).equals(Environment.MEDIA_BAD_REMOVAL)) { |
| return true; |
| } |
| /* Send the media unmounted event first */ |
| if (DEBUG_EVENTS) Slog.i(TAG, "Sending unmounted event first"); |
| updatePublicVolumeState(path, Environment.MEDIA_UNMOUNTED); |
| sendStorageIntent(Environment.MEDIA_UNMOUNTED, path); |
| |
| if (DEBUG_EVENTS) Slog.i(TAG, "Sending media removed"); |
| updatePublicVolumeState(path, Environment.MEDIA_REMOVED); |
| action = Intent.ACTION_MEDIA_REMOVED; |
| } else if (code == VoldResponseCode.VolumeBadRemoval) { |
| if (DEBUG_EVENTS) Slog.i(TAG, "Sending unmounted event first"); |
| /* Send the media unmounted event first */ |
| updatePublicVolumeState(path, Environment.MEDIA_UNMOUNTED); |
| action = Intent.ACTION_MEDIA_UNMOUNTED; |
| |
| if (DEBUG_EVENTS) Slog.i(TAG, "Sending media bad removal"); |
| updatePublicVolumeState(path, Environment.MEDIA_BAD_REMOVAL); |
| action = Intent.ACTION_MEDIA_BAD_REMOVAL; |
| } else { |
| Slog.e(TAG, String.format("Unknown code {%d}", code)); |
| } |
| |
| if (action != null) { |
| sendStorageIntent(action, path); |
| } |
| } else { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| private void notifyVolumeStateChange(String label, String path, int oldState, int newState) { |
| String vs = getVolumeState(path); |
| if (DEBUG_EVENTS) Slog.i(TAG, "notifyVolumeStateChanged::" + vs); |
| |
| String action = null; |
| |
| if (oldState == VolumeState.Shared && newState != oldState) { |
| if (LOCAL_LOGD) Slog.d(TAG, "Sending ACTION_MEDIA_UNSHARED intent"); |
| sendStorageIntent(Intent.ACTION_MEDIA_UNSHARED, path); |
| } |
| |
| if (newState == VolumeState.Init) { |
| } else if (newState == VolumeState.NoMedia) { |
| // NoMedia is handled via Disk Remove events |
| } else if (newState == VolumeState.Idle) { |
| /* |
| * Don't notify if we're in BAD_REMOVAL, NOFS, UNMOUNTABLE, or |
| * if we're in the process of enabling UMS |
| */ |
| if (!vs.equals( |
| Environment.MEDIA_BAD_REMOVAL) && !vs.equals( |
| Environment.MEDIA_NOFS) && !vs.equals( |
| Environment.MEDIA_UNMOUNTABLE) && !getUmsEnabling()) { |
| if (DEBUG_EVENTS) Slog.i(TAG, "updating volume state for media bad removal nofs and unmountable"); |
| updatePublicVolumeState(path, Environment.MEDIA_UNMOUNTED); |
| action = Intent.ACTION_MEDIA_UNMOUNTED; |
| } |
| } else if (newState == VolumeState.Pending) { |
| } else if (newState == VolumeState.Checking) { |
| if (DEBUG_EVENTS) Slog.i(TAG, "updating volume state checking"); |
| updatePublicVolumeState(path, Environment.MEDIA_CHECKING); |
| action = Intent.ACTION_MEDIA_CHECKING; |
| } else if (newState == VolumeState.Mounted) { |
| if (DEBUG_EVENTS) Slog.i(TAG, "updating volume state mounted"); |
| updatePublicVolumeState(path, Environment.MEDIA_MOUNTED); |
| action = Intent.ACTION_MEDIA_MOUNTED; |
| } else if (newState == VolumeState.Unmounting) { |
| action = Intent.ACTION_MEDIA_EJECT; |
| } else if (newState == VolumeState.Formatting) { |
| } else if (newState == VolumeState.Shared) { |
| if (DEBUG_EVENTS) Slog.i(TAG, "Updating volume state media mounted"); |
| /* Send the media unmounted event first */ |
| updatePublicVolumeState(path, Environment.MEDIA_UNMOUNTED); |
| sendStorageIntent(Intent.ACTION_MEDIA_UNMOUNTED, path); |
| |
| if (DEBUG_EVENTS) Slog.i(TAG, "Updating media shared"); |
| updatePublicVolumeState(path, Environment.MEDIA_SHARED); |
| action = Intent.ACTION_MEDIA_SHARED; |
| if (LOCAL_LOGD) Slog.d(TAG, "Sending ACTION_MEDIA_SHARED intent"); |
| } else if (newState == VolumeState.SharedMnt) { |
| Slog.e(TAG, "Live shared mounts not supported yet!"); |
| return; |
| } else { |
| Slog.e(TAG, "Unhandled VolumeState {" + newState + "}"); |
| } |
| |
| if (action != null) { |
| sendStorageIntent(action, path); |
| } |
| } |
| |
| private int doMountVolume(String path) { |
| int rc = StorageResultCode.OperationSucceeded; |
| |
| if (DEBUG_EVENTS) Slog.i(TAG, "doMountVolume: Mouting " + path); |
| try { |
| mConnector.execute("volume", "mount", path); |
| } catch (NativeDaemonConnectorException e) { |
| /* |
| * Mount failed for some reason |
| */ |
| String action = null; |
| int code = e.getCode(); |
| if (code == VoldResponseCode.OpFailedNoMedia) { |
| /* |
| * Attempt to mount but no media inserted |
| */ |
| rc = StorageResultCode.OperationFailedNoMedia; |
| } else if (code == VoldResponseCode.OpFailedMediaBlank) { |
| if (DEBUG_EVENTS) Slog.i(TAG, " updating volume state :: media nofs"); |
| /* |
| * Media is blank or does not contain a supported filesystem |
| */ |
| updatePublicVolumeState(path, Environment.MEDIA_NOFS); |
| action = Intent.ACTION_MEDIA_NOFS; |
| rc = StorageResultCode.OperationFailedMediaBlank; |
| } else if (code == VoldResponseCode.OpFailedMediaCorrupt) { |
| if (DEBUG_EVENTS) Slog.i(TAG, "updating volume state media corrupt"); |
| /* |
| * Volume consistency check failed |
| */ |
| updatePublicVolumeState(path, Environment.MEDIA_UNMOUNTABLE); |
| action = Intent.ACTION_MEDIA_UNMOUNTABLE; |
| rc = StorageResultCode.OperationFailedMediaCorrupt; |
| } else { |
| rc = StorageResultCode.OperationFailedInternalError; |
| } |
| |
| /* |
| * Send broadcast intent (if required for the failure) |
| */ |
| if (action != null) { |
| sendStorageIntent(action, path); |
| } |
| } |
| |
| return rc; |
| } |
| |
| /* |
| * If force is not set, we do not unmount if there are |
| * processes holding references to the volume about to be unmounted. |
| * If force is set, all the processes holding references need to be |
| * killed via the ActivityManager before actually unmounting the volume. |
| * This might even take a while and might be retried after timed delays |
| * to make sure we dont end up in an instable state and kill some core |
| * processes. |
| * If removeEncryption is set, force is implied, and the system will remove any encryption |
| * mapping set on the volume when unmounting. |
| */ |
| private int doUnmountVolume(String path, boolean force, boolean removeEncryption) { |
| if (!getVolumeState(path).equals(Environment.MEDIA_MOUNTED)) { |
| return VoldResponseCode.OpFailedVolNotMounted; |
| } |
| |
| /* |
| * Force a GC to make sure AssetManagers in other threads of the |
| * system_server are cleaned up. We have to do this since AssetManager |
| * instances are kept as a WeakReference and it's possible we have files |
| * open on the external storage. |
| */ |
| Runtime.getRuntime().gc(); |
| |
| // Redundant probably. But no harm in updating state again. |
| mPms.updateExternalMediaStatus(false, false); |
| try { |
| final Command cmd = new Command("volume", "unmount", path); |
| if (removeEncryption) { |
| cmd.appendArg("force_and_revert"); |
| } else if (force) { |
| cmd.appendArg("force"); |
| } |
| mConnector.execute(cmd); |
| // We unmounted the volume. None of the asec containers are available now. |
| synchronized (mAsecMountSet) { |
| mAsecMountSet.clear(); |
| } |
| return StorageResultCode.OperationSucceeded; |
| } catch (NativeDaemonConnectorException e) { |
| // Don't worry about mismatch in PackageManager since the |
| // call back will handle the status changes any way. |
| int code = e.getCode(); |
| if (code == VoldResponseCode.OpFailedVolNotMounted) { |
| return StorageResultCode.OperationFailedStorageNotMounted; |
| } else if (code == VoldResponseCode.OpFailedStorageBusy) { |
| return StorageResultCode.OperationFailedStorageBusy; |
| } else { |
| return StorageResultCode.OperationFailedInternalError; |
| } |
| } |
| } |
| |
| private int doFormatVolume(String path) { |
| try { |
| mConnector.execute("volume", "format", path); |
| return StorageResultCode.OperationSucceeded; |
| } catch (NativeDaemonConnectorException e) { |
| int code = e.getCode(); |
| if (code == VoldResponseCode.OpFailedNoMedia) { |
| return StorageResultCode.OperationFailedNoMedia; |
| } else if (code == VoldResponseCode.OpFailedMediaCorrupt) { |
| return StorageResultCode.OperationFailedMediaCorrupt; |
| } else { |
| return StorageResultCode.OperationFailedInternalError; |
| } |
| } |
| } |
| |
| private boolean doGetVolumeShared(String path, String method) { |
| final NativeDaemonEvent event; |
| try { |
| event = mConnector.execute("volume", "shared", path, method); |
| } catch (NativeDaemonConnectorException ex) { |
| Slog.e(TAG, "Failed to read response to volume shared " + path + " " + method); |
| return false; |
| } |
| |
| if (event.getCode() == VoldResponseCode.ShareEnabledResult) { |
| return event.getMessage().endsWith("enabled"); |
| } else { |
| return false; |
| } |
| } |
| |
| private void notifyShareAvailabilityChange(final boolean avail) { |
| synchronized (mListeners) { |
| mUmsAvailable = avail; |
| for (int i = mListeners.size() -1; i >= 0; i--) { |
| MountServiceBinderListener bl = mListeners.get(i); |
| try { |
| bl.mListener.onUsbMassStorageConnectionChanged(avail); |
| } catch (RemoteException rex) { |
| Slog.e(TAG, "Listener dead"); |
| mListeners.remove(i); |
| } catch (Exception ex) { |
| Slog.e(TAG, "Listener failed", ex); |
| } |
| } |
| } |
| |
| if (mBooted == true) { |
| sendUmsIntent(avail); |
| } else { |
| mSendUmsConnectedOnBoot = avail; |
| } |
| |
| final String path = Environment.getExternalStorageDirectory().getPath(); |
| if (avail == false && getVolumeState(path).equals(Environment.MEDIA_SHARED)) { |
| /* |
| * USB mass storage disconnected while enabled |
| */ |
| new Thread() { |
| @Override |
| public void run() { |
| try { |
| int rc; |
| Slog.w(TAG, "Disabling UMS after cable disconnect"); |
| doShareUnshareVolume(path, "ums", false); |
| if ((rc = doMountVolume(path)) != StorageResultCode.OperationSucceeded) { |
| Slog.e(TAG, String.format( |
| "Failed to remount {%s} on UMS enabled-disconnect (%d)", |
| path, rc)); |
| } |
| } catch (Exception ex) { |
| Slog.w(TAG, "Failed to mount media on UMS enabled-disconnect", ex); |
| } |
| } |
| }.start(); |
| } |
| } |
| |
| private void sendStorageIntent(String action, String path) { |
| Intent intent = new Intent(action, Uri.parse("file://" + path)); |
| // add StorageVolume extra |
| intent.putExtra(StorageVolume.EXTRA_STORAGE_VOLUME, mVolumeMap.get(path)); |
| Slog.d(TAG, "sendStorageIntent " + intent); |
| mContext.sendBroadcast(intent); |
| } |
| |
| private void sendUmsIntent(boolean c) { |
| mContext.sendBroadcast( |
| new Intent((c ? Intent.ACTION_UMS_CONNECTED : Intent.ACTION_UMS_DISCONNECTED))); |
| } |
| |
| private void validatePermission(String perm) { |
| if (mContext.checkCallingOrSelfPermission(perm) != PackageManager.PERMISSION_GRANTED) { |
| throw new SecurityException(String.format("Requires %s permission", perm)); |
| } |
| } |
| |
| // Storage list XML tags |
| private static final String TAG_STORAGE_LIST = "StorageList"; |
| private static final String TAG_STORAGE = "storage"; |
| |
| private void readStorageList(Resources resources) { |
| int id = com.android.internal.R.xml.storage_list; |
| XmlResourceParser parser = resources.getXml(id); |
| AttributeSet attrs = Xml.asAttributeSet(parser); |
| |
| try { |
| XmlUtils.beginDocument(parser, TAG_STORAGE_LIST); |
| while (true) { |
| XmlUtils.nextElement(parser); |
| |
| String element = parser.getName(); |
| if (element == null) break; |
| |
| if (TAG_STORAGE.equals(element)) { |
| TypedArray a = resources.obtainAttributes(attrs, |
| com.android.internal.R.styleable.Storage); |
| |
| CharSequence path = a.getText( |
| com.android.internal.R.styleable.Storage_mountPoint); |
| CharSequence description = a.getText( |
| com.android.internal.R.styleable.Storage_storageDescription); |
| boolean primary = a.getBoolean( |
| com.android.internal.R.styleable.Storage_primary, false); |
| boolean removable = a.getBoolean( |
| com.android.internal.R.styleable.Storage_removable, false); |
| boolean emulated = a.getBoolean( |
| com.android.internal.R.styleable.Storage_emulated, false); |
| int mtpReserve = a.getInt( |
| com.android.internal.R.styleable.Storage_mtpReserve, 0); |
| boolean allowMassStorage = a.getBoolean( |
| com.android.internal.R.styleable.Storage_allowMassStorage, false); |
| // resource parser does not support longs, so XML value is in megabytes |
| long maxFileSize = a.getInt( |
| com.android.internal.R.styleable.Storage_maxFileSize, 0) * 1024L * 1024L; |
| |
| Slog.d(TAG, "got storage path: " + path + " description: " + description + |
| " primary: " + primary + " removable: " + removable + |
| " emulated: " + emulated + " mtpReserve: " + mtpReserve + |
| " allowMassStorage: " + allowMassStorage + |
| " maxFileSize: " + maxFileSize); |
| if (path == null || description == null) { |
| Slog.e(TAG, "path or description is null in readStorageList"); |
| } else { |
| String pathString = path.toString(); |
| StorageVolume volume = new StorageVolume(pathString, |
| description.toString(), removable, emulated, |
| mtpReserve, allowMassStorage, maxFileSize); |
| if (primary) { |
| if (mPrimaryVolume == null) { |
| mPrimaryVolume = volume; |
| } else { |
| Slog.e(TAG, "multiple primary volumes in storage list"); |
| } |
| } |
| if (mPrimaryVolume == volume) { |
| // primay volume must be first |
| mVolumes.add(0, volume); |
| } else { |
| mVolumes.add(volume); |
| } |
| mVolumeMap.put(pathString, volume); |
| } |
| a.recycle(); |
| } |
| } |
| } catch (XmlPullParserException e) { |
| throw new RuntimeException(e); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } finally { |
| // compute storage ID for each volume |
| int length = mVolumes.size(); |
| for (int i = 0; i < length; i++) { |
| mVolumes.get(i).setStorageId(i); |
| } |
| parser.close(); |
| } |
| } |
| |
| /** |
| * Constructs a new MountService instance |
| * |
| * @param context Binder context for this service |
| */ |
| public MountService(Context context) { |
| mContext = context; |
| Resources resources = context.getResources(); |
| readStorageList(resources); |
| |
| if (mPrimaryVolume != null) { |
| mExternalStoragePath = mPrimaryVolume.getPath(); |
| mEmulateExternalStorage = mPrimaryVolume.isEmulated(); |
| if (mEmulateExternalStorage) { |
| Slog.d(TAG, "using emulated external storage"); |
| mVolumeStates.put(mExternalStoragePath, Environment.MEDIA_MOUNTED); |
| } |
| } |
| |
| // XXX: This will go away soon in favor of IMountServiceObserver |
| mPms = (PackageManagerService) ServiceManager.getService("package"); |
| |
| IntentFilter filter = new IntentFilter(); |
| filter.addAction(Intent.ACTION_BOOT_COMPLETED); |
| // don't bother monitoring USB if mass storage is not supported on our primary volume |
| if (mPrimaryVolume != null && mPrimaryVolume.allowMassStorage()) { |
| filter.addAction(UsbManager.ACTION_USB_STATE); |
| } |
| mContext.registerReceiver(mBroadcastReceiver, filter, null, null); |
| |
| mHandlerThread = new HandlerThread("MountService"); |
| mHandlerThread.start(); |
| mHandler = new MountServiceHandler(mHandlerThread.getLooper()); |
| |
| // Add OBB Action Handler to MountService thread. |
| mObbActionHandler = new ObbActionHandler(mHandlerThread.getLooper()); |
| |
| /* |
| * Vold does not run in the simulator, so pretend the connector thread |
| * ran and did its thing. |
| */ |
| if ("simulator".equals(SystemProperties.get("ro.product.device"))) { |
| mReady = true; |
| mUmsEnabling = true; |
| return; |
| } |
| |
| /* |
| * Create the connection to vold with a maximum queue of twice the |
| * amount of containers we'd ever expect to have. This keeps an |
| * "asec list" from blocking a thread repeatedly. |
| */ |
| mConnector = new NativeDaemonConnector(this, "vold", MAX_CONTAINERS * 2, VOLD_TAG, 25); |
| mReady = false; |
| Thread thread = new Thread(mConnector, VOLD_TAG); |
| thread.start(); |
| |
| // Add ourself to the Watchdog monitors if enabled. |
| if (WATCHDOG_ENABLE) { |
| Watchdog.getInstance().addMonitor(this); |
| } |
| } |
| |
| /** |
| * Exposed API calls below here |
| */ |
| |
| public void registerListener(IMountServiceListener listener) { |
| synchronized (mListeners) { |
| MountServiceBinderListener bl = new MountServiceBinderListener(listener); |
| try { |
| listener.asBinder().linkToDeath(bl, 0); |
| mListeners.add(bl); |
| } catch (RemoteException rex) { |
| Slog.e(TAG, "Failed to link to listener death"); |
| } |
| } |
| } |
| |
| public void unregisterListener(IMountServiceListener listener) { |
| synchronized (mListeners) { |
| for(MountServiceBinderListener bl : mListeners) { |
| if (bl.mListener == listener) { |
| mListeners.remove(mListeners.indexOf(bl)); |
| return; |
| } |
| } |
| } |
| } |
| |
| public void shutdown(final IMountShutdownObserver observer) { |
| validatePermission(android.Manifest.permission.SHUTDOWN); |
| |
| Slog.i(TAG, "Shutting down"); |
| synchronized (mVolumeStates) { |
| for (String path : mVolumeStates.keySet()) { |
| String state = mVolumeStates.get(path); |
| |
| if (state.equals(Environment.MEDIA_SHARED)) { |
| /* |
| * If the media is currently shared, unshare it. |
| * XXX: This is still dangerous!. We should not |
| * be rebooting at *all* if UMS is enabled, since |
| * the UMS host could have dirty FAT cache entries |
| * yet to flush. |
| */ |
| setUsbMassStorageEnabled(false); |
| } else if (state.equals(Environment.MEDIA_CHECKING)) { |
| /* |
| * If the media is being checked, then we need to wait for |
| * it to complete before being able to proceed. |
| */ |
| // XXX: @hackbod - Should we disable the ANR timer here? |
| int retries = 30; |
| while (state.equals(Environment.MEDIA_CHECKING) && (retries-- >=0)) { |
| try { |
| Thread.sleep(1000); |
| } catch (InterruptedException iex) { |
| Slog.e(TAG, "Interrupted while waiting for media", iex); |
| break; |
| } |
| state = Environment.getExternalStorageState(); |
| } |
| if (retries == 0) { |
| Slog.e(TAG, "Timed out waiting for media to check"); |
| } |
| } |
| |
| if (state.equals(Environment.MEDIA_MOUNTED)) { |
| // Post a unmount message. |
| ShutdownCallBack ucb = new ShutdownCallBack(path, observer); |
| mHandler.sendMessage(mHandler.obtainMessage(H_UNMOUNT_PM_UPDATE, ucb)); |
| } else if (observer != null) { |
| /* |
| * Observer is waiting for onShutDownComplete when we are done. |
| * Since nothing will be done send notification directly so shutdown |
| * sequence can continue. |
| */ |
| try { |
| observer.onShutDownComplete(StorageResultCode.OperationSucceeded); |
| } catch (RemoteException e) { |
| Slog.w(TAG, "RemoteException when shutting down"); |
| } |
| } |
| } |
| } |
| } |
| |
| private boolean getUmsEnabling() { |
| synchronized (mListeners) { |
| return mUmsEnabling; |
| } |
| } |
| |
| private void setUmsEnabling(boolean enable) { |
| synchronized (mListeners) { |
| mUmsEnabling = enable; |
| } |
| } |
| |
| public boolean isUsbMassStorageConnected() { |
| waitForReady(); |
| |
| if (getUmsEnabling()) { |
| return true; |
| } |
| synchronized (mListeners) { |
| return mUmsAvailable; |
| } |
| } |
| |
| public void setUsbMassStorageEnabled(boolean enable) { |
| waitForReady(); |
| validatePermission(android.Manifest.permission.MOUNT_UNMOUNT_FILESYSTEMS); |
| |
| // TODO: Add support for multiple share methods |
| |
| /* |
| * If the volume is mounted and we're enabling then unmount it |
| */ |
| String path = Environment.getExternalStorageDirectory().getPath(); |
| String vs = getVolumeState(path); |
| String method = "ums"; |
| if (enable && vs.equals(Environment.MEDIA_MOUNTED)) { |
| // Override for isUsbMassStorageEnabled() |
| setUmsEnabling(enable); |
| UmsEnableCallBack umscb = new UmsEnableCallBack(path, method, true); |
| mHandler.sendMessage(mHandler.obtainMessage(H_UNMOUNT_PM_UPDATE, umscb)); |
| // Clear override |
| setUmsEnabling(false); |
| } |
| /* |
| * If we disabled UMS then mount the volume |
| */ |
| if (!enable) { |
| doShareUnshareVolume(path, method, enable); |
| if (doMountVolume(path) != StorageResultCode.OperationSucceeded) { |
| Slog.e(TAG, "Failed to remount " + path + |
| " after disabling share method " + method); |
| /* |
| * Even though the mount failed, the unshare didn't so don't indicate an error. |
| * The mountVolume() call will have set the storage state and sent the necessary |
| * broadcasts. |
| */ |
| } |
| } |
| } |
| |
| public boolean isUsbMassStorageEnabled() { |
| waitForReady(); |
| return doGetVolumeShared(Environment.getExternalStorageDirectory().getPath(), "ums"); |
| } |
| |
| /** |
| * @return state of the volume at the specified mount point |
| */ |
| public String getVolumeState(String mountPoint) { |
| synchronized (mVolumeStates) { |
| String state = mVolumeStates.get(mountPoint); |
| if (state == null) { |
| Slog.w(TAG, "getVolumeState(" + mountPoint + "): Unknown volume"); |
| if (SystemProperties.get("vold.encrypt_progress").length() != 0) { |
| state = Environment.MEDIA_REMOVED; |
| } else { |
| throw new IllegalArgumentException(); |
| } |
| } |
| |
| return state; |
| } |
| } |
| |
| public boolean isExternalStorageEmulated() { |
| return mEmulateExternalStorage; |
| } |
| |
| public int mountVolume(String path) { |
| validatePermission(android.Manifest.permission.MOUNT_UNMOUNT_FILESYSTEMS); |
| |
| waitForReady(); |
| return doMountVolume(path); |
| } |
| |
| public void unmountVolume(String path, boolean force, boolean removeEncryption) { |
| validatePermission(android.Manifest.permission.MOUNT_UNMOUNT_FILESYSTEMS); |
| waitForReady(); |
| |
| String volState = getVolumeState(path); |
| if (DEBUG_UNMOUNT) { |
| Slog.i(TAG, "Unmounting " + path |
| + " force = " + force |
| + " removeEncryption = " + removeEncryption); |
| } |
| if (Environment.MEDIA_UNMOUNTED.equals(volState) || |
| Environment.MEDIA_REMOVED.equals(volState) || |
| Environment.MEDIA_SHARED.equals(volState) || |
| Environment.MEDIA_UNMOUNTABLE.equals(volState)) { |
| // Media already unmounted or cannot be unmounted. |
| // TODO return valid return code when adding observer call back. |
| return; |
| } |
| UnmountCallBack ucb = new UnmountCallBack(path, force, removeEncryption); |
| mHandler.sendMessage(mHandler.obtainMessage(H_UNMOUNT_PM_UPDATE, ucb)); |
| } |
| |
| public int formatVolume(String path) { |
| validatePermission(android.Manifest.permission.MOUNT_FORMAT_FILESYSTEMS); |
| waitForReady(); |
| |
| return doFormatVolume(path); |
| } |
| |
| public int[] getStorageUsers(String path) { |
| validatePermission(android.Manifest.permission.MOUNT_UNMOUNT_FILESYSTEMS); |
| waitForReady(); |
| try { |
| final String[] r = NativeDaemonEvent.filterMessageList( |
| mConnector.executeForList("storage", "users", path), |
| VoldResponseCode.StorageUsersListResult); |
| |
| // FMT: <pid> <process name> |
| int[] data = new int[r.length]; |
| for (int i = 0; i < r.length; i++) { |
| String[] tok = r[i].split(" "); |
| try { |
| data[i] = Integer.parseInt(tok[0]); |
| } catch (NumberFormatException nfe) { |
| Slog.e(TAG, String.format("Error parsing pid %s", tok[0])); |
| return new int[0]; |
| } |
| } |
| return data; |
| } catch (NativeDaemonConnectorException e) { |
| Slog.e(TAG, "Failed to retrieve storage users list", e); |
| return new int[0]; |
| } |
| } |
| |
| private void warnOnNotMounted() { |
| if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) { |
| Slog.w(TAG, "getSecureContainerList() called when storage not mounted"); |
| } |
| } |
| |
| public String[] getSecureContainerList() { |
| validatePermission(android.Manifest.permission.ASEC_ACCESS); |
| waitForReady(); |
| warnOnNotMounted(); |
| |
| try { |
| return NativeDaemonEvent.filterMessageList( |
| mConnector.executeForList("asec", "list"), VoldResponseCode.AsecListResult); |
| } catch (NativeDaemonConnectorException e) { |
| return new String[0]; |
| } |
| } |
| |
| public int createSecureContainer(String id, int sizeMb, String fstype, |
| String key, int ownerUid) { |
| validatePermission(android.Manifest.permission.ASEC_CREATE); |
| waitForReady(); |
| warnOnNotMounted(); |
| |
| int rc = StorageResultCode.OperationSucceeded; |
| try { |
| mConnector.execute("asec", "create", id, sizeMb, fstype, key, ownerUid); |
| } catch (NativeDaemonConnectorException e) { |
| rc = StorageResultCode.OperationFailedInternalError; |
| } |
| |
| if (rc == StorageResultCode.OperationSucceeded) { |
| synchronized (mAsecMountSet) { |
| mAsecMountSet.add(id); |
| } |
| } |
| return rc; |
| } |
| |
| public int finalizeSecureContainer(String id) { |
| validatePermission(android.Manifest.permission.ASEC_CREATE); |
| warnOnNotMounted(); |
| |
| int rc = StorageResultCode.OperationSucceeded; |
| try { |
| mConnector.execute("asec", "finalize", id); |
| /* |
| * Finalization does a remount, so no need |
| * to update mAsecMountSet |
| */ |
| } catch (NativeDaemonConnectorException e) { |
| rc = StorageResultCode.OperationFailedInternalError; |
| } |
| return rc; |
| } |
| |
| public int destroySecureContainer(String id, boolean force) { |
| validatePermission(android.Manifest.permission.ASEC_DESTROY); |
| waitForReady(); |
| warnOnNotMounted(); |
| |
| /* |
| * Force a GC to make sure AssetManagers in other threads of the |
| * system_server are cleaned up. We have to do this since AssetManager |
| * instances are kept as a WeakReference and it's possible we have files |
| * open on the external storage. |
| */ |
| Runtime.getRuntime().gc(); |
| |
| int rc = StorageResultCode.OperationSucceeded; |
| try { |
| final Command cmd = new Command("asec", "destroy", id); |
| if (force) { |
| cmd.appendArg("force"); |
| } |
| mConnector.execute(cmd); |
| } catch (NativeDaemonConnectorException e) { |
| int code = e.getCode(); |
| if (code == VoldResponseCode.OpFailedStorageBusy) { |
| rc = StorageResultCode.OperationFailedStorageBusy; |
| } else { |
| rc = StorageResultCode.OperationFailedInternalError; |
| } |
| } |
| |
| if (rc == StorageResultCode.OperationSucceeded) { |
| synchronized (mAsecMountSet) { |
| if (mAsecMountSet.contains(id)) { |
| mAsecMountSet.remove(id); |
| } |
| } |
| } |
| |
| return rc; |
| } |
| |
| public int mountSecureContainer(String id, String key, int ownerUid) { |
| validatePermission(android.Manifest.permission.ASEC_MOUNT_UNMOUNT); |
| waitForReady(); |
| warnOnNotMounted(); |
| |
| synchronized (mAsecMountSet) { |
| if (mAsecMountSet.contains(id)) { |
| return StorageResultCode.OperationFailedStorageMounted; |
| } |
| } |
| |
| int rc = StorageResultCode.OperationSucceeded; |
| try { |
| mConnector.execute("asec", "mount", id, key, ownerUid); |
| } catch (NativeDaemonConnectorException e) { |
| int code = e.getCode(); |
| if (code != VoldResponseCode.OpFailedStorageBusy) { |
| rc = StorageResultCode.OperationFailedInternalError; |
| } |
| } |
| |
| if (rc == StorageResultCode.OperationSucceeded) { |
| synchronized (mAsecMountSet) { |
| mAsecMountSet.add(id); |
| } |
| } |
| return rc; |
| } |
| |
| public int unmountSecureContainer(String id, boolean force) { |
| validatePermission(android.Manifest.permission.ASEC_MOUNT_UNMOUNT); |
| waitForReady(); |
| warnOnNotMounted(); |
| |
| synchronized (mAsecMountSet) { |
| if (!mAsecMountSet.contains(id)) { |
| return StorageResultCode.OperationFailedStorageNotMounted; |
| } |
| } |
| |
| /* |
| * Force a GC to make sure AssetManagers in other threads of the |
| * system_server are cleaned up. We have to do this since AssetManager |
| * instances are kept as a WeakReference and it's possible we have files |
| * open on the external storage. |
| */ |
| Runtime.getRuntime().gc(); |
| |
| int rc = StorageResultCode.OperationSucceeded; |
| try { |
| final Command cmd = new Command("asec", "unmount", id); |
| if (force) { |
| cmd.appendArg("force"); |
| } |
| mConnector.execute(cmd); |
| } catch (NativeDaemonConnectorException e) { |
| int code = e.getCode(); |
| if (code == VoldResponseCode.OpFailedStorageBusy) { |
| rc = StorageResultCode.OperationFailedStorageBusy; |
| } else { |
| rc = StorageResultCode.OperationFailedInternalError; |
| } |
| } |
| |
| if (rc == StorageResultCode.OperationSucceeded) { |
| synchronized (mAsecMountSet) { |
| mAsecMountSet.remove(id); |
| } |
| } |
| return rc; |
| } |
| |
| public boolean isSecureContainerMounted(String id) { |
| validatePermission(android.Manifest.permission.ASEC_ACCESS); |
| waitForReady(); |
| warnOnNotMounted(); |
| |
| synchronized (mAsecMountSet) { |
| return mAsecMountSet.contains(id); |
| } |
| } |
| |
| public int renameSecureContainer(String oldId, String newId) { |
| validatePermission(android.Manifest.permission.ASEC_RENAME); |
| waitForReady(); |
| warnOnNotMounted(); |
| |
| synchronized (mAsecMountSet) { |
| /* |
| * Because a mounted container has active internal state which cannot be |
| * changed while active, we must ensure both ids are not currently mounted. |
| */ |
| if (mAsecMountSet.contains(oldId) || mAsecMountSet.contains(newId)) { |
| return StorageResultCode.OperationFailedStorageMounted; |
| } |
| } |
| |
| int rc = StorageResultCode.OperationSucceeded; |
| try { |
| mConnector.execute("asec", "rename", oldId, newId); |
| } catch (NativeDaemonConnectorException e) { |
| rc = StorageResultCode.OperationFailedInternalError; |
| } |
| |
| return rc; |
| } |
| |
| public String getSecureContainerPath(String id) { |
| validatePermission(android.Manifest.permission.ASEC_ACCESS); |
| waitForReady(); |
| warnOnNotMounted(); |
| |
| final NativeDaemonEvent event; |
| try { |
| event = mConnector.execute("asec", "path", id); |
| event.checkCode(VoldResponseCode.AsecPathResult); |
| return event.getMessage(); |
| } catch (NativeDaemonConnectorException e) { |
| int code = e.getCode(); |
| if (code == VoldResponseCode.OpFailedStorageNotFound) { |
| Slog.i(TAG, String.format("Container '%s' not found", id)); |
| return null; |
| } else { |
| throw new IllegalStateException(String.format("Unexpected response code %d", code)); |
| } |
| } |
| } |
| |
| public String getSecureContainerFilesystemPath(String id) { |
| validatePermission(android.Manifest.permission.ASEC_ACCESS); |
| waitForReady(); |
| warnOnNotMounted(); |
| |
| final NativeDaemonEvent event; |
| try { |
| event = mConnector.execute("asec", "fspath", id); |
| event.checkCode(VoldResponseCode.AsecPathResult); |
| return event.getMessage(); |
| } catch (NativeDaemonConnectorException e) { |
| int code = e.getCode(); |
| if (code == VoldResponseCode.OpFailedStorageNotFound) { |
| Slog.i(TAG, String.format("Container '%s' not found", id)); |
| return null; |
| } else { |
| throw new IllegalStateException(String.format("Unexpected response code %d", code)); |
| } |
| } |
| } |
| |
| public void finishMediaUpdate() { |
| mHandler.sendEmptyMessage(H_UNMOUNT_PM_DONE); |
| } |
| |
| private boolean isUidOwnerOfPackageOrSystem(String packageName, int callerUid) { |
| if (callerUid == android.os.Process.SYSTEM_UID) { |
| return true; |
| } |
| |
| if (packageName == null) { |
| return false; |
| } |
| |
| final int packageUid = mPms.getPackageUid(packageName, UserId.getUserId(callerUid)); |
| |
| if (DEBUG_OBB) { |
| Slog.d(TAG, "packageName = " + packageName + ", packageUid = " + |
| packageUid + ", callerUid = " + callerUid); |
| } |
| |
| return callerUid == packageUid; |
| } |
| |
| public String getMountedObbPath(String filename) { |
| if (filename == null) { |
| throw new IllegalArgumentException("filename cannot be null"); |
| } |
| |
| waitForReady(); |
| warnOnNotMounted(); |
| |
| final NativeDaemonEvent event; |
| try { |
| event = mConnector.execute("obb", "path", filename); |
| event.checkCode(VoldResponseCode.AsecPathResult); |
| return event.getMessage(); |
| } catch (NativeDaemonConnectorException e) { |
| int code = e.getCode(); |
| if (code == VoldResponseCode.OpFailedStorageNotFound) { |
| return null; |
| } else { |
| throw new IllegalStateException(String.format("Unexpected response code %d", code)); |
| } |
| } |
| } |
| |
| public boolean isObbMounted(String filename) { |
| if (filename == null) { |
| throw new IllegalArgumentException("filename cannot be null"); |
| } |
| |
| synchronized (mObbMounts) { |
| return mObbPathToStateMap.containsKey(filename); |
| } |
| } |
| |
| public void mountObb(String filename, String key, IObbActionListener token, int nonce) |
| throws RemoteException { |
| if (filename == null) { |
| throw new IllegalArgumentException("filename cannot be null"); |
| } |
| |
| if (token == null) { |
| throw new IllegalArgumentException("token cannot be null"); |
| } |
| |
| final int callerUid = Binder.getCallingUid(); |
| final ObbState obbState = new ObbState(filename, callerUid, token, nonce); |
| final ObbAction action = new MountObbAction(obbState, key); |
| mObbActionHandler.sendMessage(mObbActionHandler.obtainMessage(OBB_RUN_ACTION, action)); |
| |
| if (DEBUG_OBB) |
| Slog.i(TAG, "Send to OBB handler: " + action.toString()); |
| } |
| |
| public void unmountObb(String filename, boolean force, IObbActionListener token, int nonce) |
| throws RemoteException { |
| if (filename == null) { |
| throw new IllegalArgumentException("filename cannot be null"); |
| } |
| |
| final int callerUid = Binder.getCallingUid(); |
| final ObbState obbState = new ObbState(filename, callerUid, token, nonce); |
| final ObbAction action = new UnmountObbAction(obbState, force); |
| mObbActionHandler.sendMessage(mObbActionHandler.obtainMessage(OBB_RUN_ACTION, action)); |
| |
| if (DEBUG_OBB) |
| Slog.i(TAG, "Send to OBB handler: " + action.toString()); |
| } |
| |
| @Override |
| public int getEncryptionState() { |
| mContext.enforceCallingOrSelfPermission(Manifest.permission.CRYPT_KEEPER, |
| "no permission to access the crypt keeper"); |
| |
| waitForReady(); |
| |
| final NativeDaemonEvent event; |
| try { |
| event = mConnector.execute("cryptfs", "cryptocomplete"); |
| return Integer.parseInt(event.getMessage()); |
| } catch (NumberFormatException e) { |
| // Bad result - unexpected. |
| Slog.w(TAG, "Unable to parse result from cryptfs cryptocomplete"); |
| return ENCRYPTION_STATE_ERROR_UNKNOWN; |
| } catch (NativeDaemonConnectorException e) { |
| // Something bad happened. |
| Slog.w(TAG, "Error in communicating with cryptfs in validating"); |
| return ENCRYPTION_STATE_ERROR_UNKNOWN; |
| } |
| } |
| |
| @Override |
| public int decryptStorage(String password) { |
| if (TextUtils.isEmpty(password)) { |
| throw new IllegalArgumentException("password cannot be empty"); |
| } |
| |
| mContext.enforceCallingOrSelfPermission(Manifest.permission.CRYPT_KEEPER, |
| "no permission to access the crypt keeper"); |
| |
| waitForReady(); |
| |
| if (DEBUG_EVENTS) { |
| Slog.i(TAG, "decrypting storage..."); |
| } |
| |
| final NativeDaemonEvent event; |
| try { |
| event = mConnector.execute("cryptfs", "checkpw", password); |
| |
| final int code = Integer.parseInt(event.getMessage()); |
| if (code == 0) { |
| // Decrypt was successful. Post a delayed message before restarting in order |
| // to let the UI to clear itself |
| mHandler.postDelayed(new Runnable() { |
| public void run() { |
| try { |
| mConnector.execute("cryptfs", "restart"); |
| } catch (NativeDaemonConnectorException e) { |
| Slog.e(TAG, "problem executing in background", e); |
| } |
| } |
| }, 1000); // 1 second |
| } |
| |
| return code; |
| } catch (NativeDaemonConnectorException e) { |
| // Decryption failed |
| return e.getCode(); |
| } |
| } |
| |
| public int encryptStorage(String password) { |
| if (TextUtils.isEmpty(password)) { |
| throw new IllegalArgumentException("password cannot be empty"); |
| } |
| |
| mContext.enforceCallingOrSelfPermission(Manifest.permission.CRYPT_KEEPER, |
| "no permission to access the crypt keeper"); |
| |
| waitForReady(); |
| |
| if (DEBUG_EVENTS) { |
| Slog.i(TAG, "encrypting storage..."); |
| } |
| |
| try { |
| mConnector.execute("cryptfs", "enablecrypto", "inplace", password); |
| } catch (NativeDaemonConnectorException e) { |
| // Encryption failed |
| return e.getCode(); |
| } |
| |
| return 0; |
| } |
| |
| public int changeEncryptionPassword(String password) { |
| if (TextUtils.isEmpty(password)) { |
| throw new IllegalArgumentException("password cannot be empty"); |
| } |
| |
| mContext.enforceCallingOrSelfPermission(Manifest.permission.CRYPT_KEEPER, |
| "no permission to access the crypt keeper"); |
| |
| waitForReady(); |
| |
| if (DEBUG_EVENTS) { |
| Slog.i(TAG, "changing encryption password..."); |
| } |
| |
| final NativeDaemonEvent event; |
| try { |
| event = mConnector.execute("cryptfs", "changepw", password); |
| return Integer.parseInt(event.getMessage()); |
| } catch (NativeDaemonConnectorException e) { |
| // Encryption failed |
| return e.getCode(); |
| } |
| } |
| |
| /** |
| * Validate a user-supplied password string with cryptfs |
| */ |
| @Override |
| public int verifyEncryptionPassword(String password) throws RemoteException { |
| // Only the system process is permitted to validate passwords |
| if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) { |
| throw new SecurityException("no permission to access the crypt keeper"); |
| } |
| |
| mContext.enforceCallingOrSelfPermission(Manifest.permission.CRYPT_KEEPER, |
| "no permission to access the crypt keeper"); |
| |
| if (TextUtils.isEmpty(password)) { |
| throw new IllegalArgumentException("password cannot be empty"); |
| } |
| |
| waitForReady(); |
| |
| if (DEBUG_EVENTS) { |
| Slog.i(TAG, "validating encryption password..."); |
| } |
| |
| final NativeDaemonEvent event; |
| try { |
| event = mConnector.execute("cryptfs", "verifypw", password); |
| Slog.i(TAG, "cryptfs verifypw => " + event.getMessage()); |
| return Integer.parseInt(event.getMessage()); |
| } catch (NativeDaemonConnectorException e) { |
| // Encryption failed |
| return e.getCode(); |
| } |
| } |
| |
| public Parcelable[] getVolumeList() { |
| synchronized(mVolumes) { |
| int size = mVolumes.size(); |
| Parcelable[] result = new Parcelable[size]; |
| for (int i = 0; i < size; i++) { |
| result[i] = mVolumes.get(i); |
| } |
| return result; |
| } |
| } |
| |
| private void addObbStateLocked(ObbState obbState) throws RemoteException { |
| final IBinder binder = obbState.getBinder(); |
| List<ObbState> obbStates = mObbMounts.get(binder); |
| |
| if (obbStates == null) { |
| obbStates = new ArrayList<ObbState>(); |
| mObbMounts.put(binder, obbStates); |
| } else { |
| for (final ObbState o : obbStates) { |
| if (o.filename.equals(obbState.filename)) { |
| throw new IllegalStateException("Attempt to add ObbState twice. " |
| + "This indicates an error in the MountService logic."); |
| } |
| } |
| } |
| |
| obbStates.add(obbState); |
| try { |
| obbState.link(); |
| } catch (RemoteException e) { |
| /* |
| * The binder died before we could link it, so clean up our state |
| * and return failure. |
| */ |
| obbStates.remove(obbState); |
| if (obbStates.isEmpty()) { |
| mObbMounts.remove(binder); |
| } |
| |
| // Rethrow the error so mountObb can get it |
| throw e; |
| } |
| |
| mObbPathToStateMap.put(obbState.filename, obbState); |
| } |
| |
| private void removeObbStateLocked(ObbState obbState) { |
| final IBinder binder = obbState.getBinder(); |
| final List<ObbState> obbStates = mObbMounts.get(binder); |
| if (obbStates != null) { |
| if (obbStates.remove(obbState)) { |
| obbState.unlink(); |
| } |
| if (obbStates.isEmpty()) { |
| mObbMounts.remove(binder); |
| } |
| } |
| |
| mObbPathToStateMap.remove(obbState.filename); |
| } |
| |
| private class ObbActionHandler extends Handler { |
| private boolean mBound = false; |
| private final List<ObbAction> mActions = new LinkedList<ObbAction>(); |
| |
| ObbActionHandler(Looper l) { |
| super(l); |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case OBB_RUN_ACTION: { |
| final ObbAction action = (ObbAction) msg.obj; |
| |
| if (DEBUG_OBB) |
| Slog.i(TAG, "OBB_RUN_ACTION: " + action.toString()); |
| |
| // If a bind was already initiated we don't really |
| // need to do anything. The pending install |
| // will be processed later on. |
| if (!mBound) { |
| // If this is the only one pending we might |
| // have to bind to the service again. |
| if (!connectToService()) { |
| Slog.e(TAG, "Failed to bind to media container service"); |
| action.handleError(); |
| return; |
| } |
| } |
| |
| mActions.add(action); |
| break; |
| } |
| case OBB_MCS_BOUND: { |
| if (DEBUG_OBB) |
| Slog.i(TAG, "OBB_MCS_BOUND"); |
| if (msg.obj != null) { |
| mContainerService = (IMediaContainerService) msg.obj; |
| } |
| if (mContainerService == null) { |
| // Something seriously wrong. Bail out |
| Slog.e(TAG, "Cannot bind to media container service"); |
| for (ObbAction action : mActions) { |
| // Indicate service bind error |
| action.handleError(); |
| } |
| mActions.clear(); |
| } else if (mActions.size() > 0) { |
| final ObbAction action = mActions.get(0); |
| if (action != null) { |
| action.execute(this); |
| } |
| } else { |
| // Should never happen ideally. |
| Slog.w(TAG, "Empty queue"); |
| } |
| break; |
| } |
| case OBB_MCS_RECONNECT: { |
| if (DEBUG_OBB) |
| Slog.i(TAG, "OBB_MCS_RECONNECT"); |
| if (mActions.size() > 0) { |
| if (mBound) { |
| disconnectService(); |
| } |
| if (!connectToService()) { |
| Slog.e(TAG, "Failed to bind to media container service"); |
| for (ObbAction action : mActions) { |
| // Indicate service bind error |
| action.handleError(); |
| } |
| mActions.clear(); |
| } |
| } |
| break; |
| } |
| case OBB_MCS_UNBIND: { |
| if (DEBUG_OBB) |
| Slog.i(TAG, "OBB_MCS_UNBIND"); |
| |
| // Delete pending install |
| if (mActions.size() > 0) { |
| mActions.remove(0); |
| } |
| if (mActions.size() == 0) { |
| if (mBound) { |
| disconnectService(); |
| } |
| } else { |
| // There are more pending requests in queue. |
| // Just post MCS_BOUND message to trigger processing |
| // of next pending install. |
| mObbActionHandler.sendEmptyMessage(OBB_MCS_BOUND); |
| } |
| break; |
| } |
| case OBB_FLUSH_MOUNT_STATE: { |
| final String path = (String) msg.obj; |
| |
| if (DEBUG_OBB) |
| Slog.i(TAG, "Flushing all OBB state for path " + path); |
| |
| synchronized (mObbMounts) { |
| final List<ObbState> obbStatesToRemove = new LinkedList<ObbState>(); |
| |
| final Iterator<Entry<String, ObbState>> i = |
| mObbPathToStateMap.entrySet().iterator(); |
| while (i.hasNext()) { |
| final Entry<String, ObbState> obbEntry = i.next(); |
| |
| /* |
| * If this entry's source file is in the volume path |
| * that got unmounted, remove it because it's no |
| * longer valid. |
| */ |
| if (obbEntry.getKey().startsWith(path)) { |
| obbStatesToRemove.add(obbEntry.getValue()); |
| } |
| } |
| |
| for (final ObbState obbState : obbStatesToRemove) { |
| if (DEBUG_OBB) |
| Slog.i(TAG, "Removing state for " + obbState.filename); |
| |
| removeObbStateLocked(obbState); |
| |
| try { |
| obbState.token.onObbResult(obbState.filename, obbState.nonce, |
| OnObbStateChangeListener.UNMOUNTED); |
| } catch (RemoteException e) { |
| Slog.i(TAG, "Couldn't send unmount notification for OBB: " |
| + obbState.filename); |
| } |
| } |
| } |
| break; |
| } |
| } |
| } |
| |
| private boolean connectToService() { |
| if (DEBUG_OBB) |
| Slog.i(TAG, "Trying to bind to DefaultContainerService"); |
| |
| Intent service = new Intent().setComponent(DEFAULT_CONTAINER_COMPONENT); |
| if (mContext.bindService(service, mDefContainerConn, Context.BIND_AUTO_CREATE)) { |
| mBound = true; |
| return true; |
| } |
| return false; |
| } |
| |
| private void disconnectService() { |
| mContainerService = null; |
| mBound = false; |
| mContext.unbindService(mDefContainerConn); |
| } |
| } |
| |
| abstract class ObbAction { |
| private static final int MAX_RETRIES = 3; |
| private int mRetries; |
| |
| ObbState mObbState; |
| |
| ObbAction(ObbState obbState) { |
| mObbState = obbState; |
| } |
| |
| public void execute(ObbActionHandler handler) { |
| try { |
| if (DEBUG_OBB) |
| Slog.i(TAG, "Starting to execute action: " + toString()); |
| mRetries++; |
| if (mRetries > MAX_RETRIES) { |
| Slog.w(TAG, "Failed to invoke remote methods on default container service. Giving up"); |
| mObbActionHandler.sendEmptyMessage(OBB_MCS_UNBIND); |
| handleError(); |
| return; |
| } else { |
| handleExecute(); |
| if (DEBUG_OBB) |
| Slog.i(TAG, "Posting install MCS_UNBIND"); |
| mObbActionHandler.sendEmptyMessage(OBB_MCS_UNBIND); |
| } |
| } catch (RemoteException e) { |
| if (DEBUG_OBB) |
| Slog.i(TAG, "Posting install MCS_RECONNECT"); |
| mObbActionHandler.sendEmptyMessage(OBB_MCS_RECONNECT); |
| } catch (Exception e) { |
| if (DEBUG_OBB) |
| Slog.d(TAG, "Error handling OBB action", e); |
| handleError(); |
| mObbActionHandler.sendEmptyMessage(OBB_MCS_UNBIND); |
| } |
| } |
| |
| abstract void handleExecute() throws RemoteException, IOException; |
| abstract void handleError(); |
| |
| protected ObbInfo getObbInfo() throws IOException { |
| ObbInfo obbInfo; |
| try { |
| obbInfo = mContainerService.getObbInfo(mObbState.filename); |
| } catch (RemoteException e) { |
| Slog.d(TAG, "Couldn't call DefaultContainerService to fetch OBB info for " |
| + mObbState.filename); |
| obbInfo = null; |
| } |
| if (obbInfo == null) { |
| throw new IOException("Couldn't read OBB file: " + mObbState.filename); |
| } |
| return obbInfo; |
| } |
| |
| protected void sendNewStatusOrIgnore(int status) { |
| if (mObbState == null || mObbState.token == null) { |
| return; |
| } |
| |
| try { |
| mObbState.token.onObbResult(mObbState.filename, mObbState.nonce, status); |
| } catch (RemoteException e) { |
| Slog.w(TAG, "MountServiceListener went away while calling onObbStateChanged"); |
| } |
| } |
| } |
| |
| class MountObbAction extends ObbAction { |
| private final String mKey; |
| |
| MountObbAction(ObbState obbState, String key) { |
| super(obbState); |
| mKey = key; |
| } |
| |
| @Override |
| public void handleExecute() throws IOException, RemoteException { |
| waitForReady(); |
| warnOnNotMounted(); |
| |
| final ObbInfo obbInfo = getObbInfo(); |
| |
| if (!isUidOwnerOfPackageOrSystem(obbInfo.packageName, mObbState.callerUid)) { |
| Slog.w(TAG, "Denied attempt to mount OBB " + obbInfo.filename |
| + " which is owned by " + obbInfo.packageName); |
| sendNewStatusOrIgnore(OnObbStateChangeListener.ERROR_PERMISSION_DENIED); |
| return; |
| } |
| |
| final boolean isMounted; |
| synchronized (mObbMounts) { |
| isMounted = mObbPathToStateMap.containsKey(obbInfo.filename); |
| } |
| if (isMounted) { |
| Slog.w(TAG, "Attempt to mount OBB which is already mounted: " + obbInfo.filename); |
| sendNewStatusOrIgnore(OnObbStateChangeListener.ERROR_ALREADY_MOUNTED); |
| return; |
| } |
| |
| /* |
| * The filename passed in might not be the canonical name, so just |
| * set the filename to the canonicalized version. |
| */ |
| mObbState.filename = obbInfo.filename; |
| |
| final String hashedKey; |
| if (mKey == null) { |
| hashedKey = "none"; |
| } else { |
| try { |
| SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1"); |
| |
| KeySpec ks = new PBEKeySpec(mKey.toCharArray(), obbInfo.salt, |
| PBKDF2_HASH_ROUNDS, CRYPTO_ALGORITHM_KEY_SIZE); |
| SecretKey key = factory.generateSecret(ks); |
| BigInteger bi = new BigInteger(key.getEncoded()); |
| hashedKey = bi.toString(16); |
| } catch (NoSuchAlgorithmException e) { |
| Slog.e(TAG, "Could not load PBKDF2 algorithm", e); |
| sendNewStatusOrIgnore(OnObbStateChangeListener.ERROR_INTERNAL); |
| return; |
| } catch (InvalidKeySpecException e) { |
| Slog.e(TAG, "Invalid key spec when loading PBKDF2 algorithm", e); |
| sendNewStatusOrIgnore(OnObbStateChangeListener.ERROR_INTERNAL); |
| return; |
| } |
| } |
| |
| int rc = StorageResultCode.OperationSucceeded; |
| try { |
| mConnector.execute( |
| "obb", "mount", mObbState.filename, hashedKey, mObbState.callerUid); |
| } catch (NativeDaemonConnectorException e) { |
| int code = e.getCode(); |
| if (code != VoldResponseCode.OpFailedStorageBusy) { |
| rc = StorageResultCode.OperationFailedInternalError; |
| } |
| } |
| |
| if (rc == StorageResultCode.OperationSucceeded) { |
| if (DEBUG_OBB) |
| Slog.d(TAG, "Successfully mounted OBB " + mObbState.filename); |
| |
| synchronized (mObbMounts) { |
| addObbStateLocked(mObbState); |
| } |
| |
| sendNewStatusOrIgnore(OnObbStateChangeListener.MOUNTED); |
| } else { |
| Slog.e(TAG, "Couldn't mount OBB file: " + rc); |
| |
| sendNewStatusOrIgnore(OnObbStateChangeListener.ERROR_COULD_NOT_MOUNT); |
| } |
| } |
| |
| @Override |
| public void handleError() { |
| sendNewStatusOrIgnore(OnObbStateChangeListener.ERROR_INTERNAL); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("MountObbAction{"); |
| sb.append("filename="); |
| sb.append(mObbState.filename); |
| sb.append(",callerUid="); |
| sb.append(mObbState.callerUid); |
| sb.append(",token="); |
| sb.append(mObbState.token != null ? mObbState.token.toString() : "NULL"); |
| sb.append(",binder="); |
| sb.append(mObbState.token != null ? mObbState.getBinder().toString() : "null"); |
| sb.append('}'); |
| return sb.toString(); |
| } |
| } |
| |
| class UnmountObbAction extends ObbAction { |
| private final boolean mForceUnmount; |
| |
| UnmountObbAction(ObbState obbState, boolean force) { |
| super(obbState); |
| mForceUnmount = force; |
| } |
| |
| @Override |
| public void handleExecute() throws IOException { |
| waitForReady(); |
| warnOnNotMounted(); |
| |
| final ObbInfo obbInfo = getObbInfo(); |
| |
| final ObbState obbState; |
| synchronized (mObbMounts) { |
| obbState = mObbPathToStateMap.get(obbInfo.filename); |
| } |
| |
| if (obbState == null) { |
| sendNewStatusOrIgnore(OnObbStateChangeListener.ERROR_NOT_MOUNTED); |
| return; |
| } |
| |
| if (obbState.callerUid != mObbState.callerUid) { |
| Slog.w(TAG, "Permission denied attempting to unmount OBB " + obbInfo.filename |
| + " (owned by " + obbInfo.packageName + ")"); |
| sendNewStatusOrIgnore(OnObbStateChangeListener.ERROR_PERMISSION_DENIED); |
| return; |
| } |
| |
| mObbState.filename = obbInfo.filename; |
| |
| int rc = StorageResultCode.OperationSucceeded; |
| try { |
| final Command cmd = new Command("obb", "unmount", mObbState.filename); |
| if (mForceUnmount) { |
| cmd.appendArg("force"); |
| } |
| mConnector.execute(cmd); |
| } catch (NativeDaemonConnectorException e) { |
| int code = e.getCode(); |
| if (code == VoldResponseCode.OpFailedStorageBusy) { |
| rc = StorageResultCode.OperationFailedStorageBusy; |
| } else if (code == VoldResponseCode.OpFailedStorageNotFound) { |
| // If it's not mounted then we've already won. |
| rc = StorageResultCode.OperationSucceeded; |
| } else { |
| rc = StorageResultCode.OperationFailedInternalError; |
| } |
| } |
| |
| if (rc == StorageResultCode.OperationSucceeded) { |
| synchronized (mObbMounts) { |
| removeObbStateLocked(obbState); |
| } |
| |
| sendNewStatusOrIgnore(OnObbStateChangeListener.UNMOUNTED); |
| } else { |
| Slog.w(TAG, "Could not mount OBB: " + mObbState.filename); |
| sendNewStatusOrIgnore(OnObbStateChangeListener.ERROR_COULD_NOT_UNMOUNT); |
| } |
| } |
| |
| @Override |
| public void handleError() { |
| sendNewStatusOrIgnore(OnObbStateChangeListener.ERROR_INTERNAL); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("UnmountObbAction{"); |
| sb.append("filename="); |
| sb.append(mObbState.filename != null ? mObbState.filename : "null"); |
| sb.append(",force="); |
| sb.append(mForceUnmount); |
| sb.append(",callerUid="); |
| sb.append(mObbState.callerUid); |
| sb.append(",token="); |
| sb.append(mObbState.token != null ? mObbState.token.toString() : "null"); |
| sb.append(",binder="); |
| sb.append(mObbState.token != null ? mObbState.getBinder().toString() : "null"); |
| sb.append('}'); |
| return sb.toString(); |
| } |
| } |
| |
| @Override |
| protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) != PackageManager.PERMISSION_GRANTED) { |
| pw.println("Permission Denial: can't dump ActivityManager from from pid=" |
| + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid() |
| + " without permission " + android.Manifest.permission.DUMP); |
| return; |
| } |
| |
| synchronized (mObbMounts) { |
| pw.println(" mObbMounts:"); |
| |
| final Iterator<Entry<IBinder, List<ObbState>>> binders = mObbMounts.entrySet().iterator(); |
| while (binders.hasNext()) { |
| Entry<IBinder, List<ObbState>> e = binders.next(); |
| pw.print(" Key="); pw.println(e.getKey().toString()); |
| final List<ObbState> obbStates = e.getValue(); |
| for (final ObbState obbState : obbStates) { |
| pw.print(" "); pw.println(obbState.toString()); |
| } |
| } |
| |
| pw.println(""); |
| pw.println(" mObbPathToStateMap:"); |
| final Iterator<Entry<String, ObbState>> maps = mObbPathToStateMap.entrySet().iterator(); |
| while (maps.hasNext()) { |
| final Entry<String, ObbState> e = maps.next(); |
| pw.print(" "); pw.print(e.getKey()); |
| pw.print(" -> "); pw.println(e.getValue().toString()); |
| } |
| } |
| |
| pw.println(""); |
| |
| synchronized (mVolumes) { |
| pw.println(" mVolumes:"); |
| |
| final int N = mVolumes.size(); |
| for (int i = 0; i < N; i++) { |
| final StorageVolume v = mVolumes.get(i); |
| pw.print(" "); |
| pw.println(v.toString()); |
| } |
| } |
| |
| pw.println(); |
| pw.println(" mConnection:"); |
| mConnector.dump(fd, pw, args); |
| } |
| |
| /** {@inheritDoc} */ |
| public void monitor() { |
| if (mConnector != null) { |
| mConnector.monitor(); |
| } |
| } |
| } |
