| /* |
| * Copyright (C) 2008 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.power; |
| |
| import android.app.ActivityManagerNative; |
| import android.app.AlertDialog; |
| import android.app.Dialog; |
| import android.app.IActivityManager; |
| import android.app.ProgressDialog; |
| import android.bluetooth.BluetoothAdapter; |
| import android.bluetooth.IBluetoothManager; |
| import android.media.AudioAttributes; |
| import android.nfc.NfcAdapter; |
| import android.nfc.INfcAdapter; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.DialogInterface; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.os.Handler; |
| import android.os.PowerManager; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.SystemClock; |
| import android.os.SystemProperties; |
| import android.os.UserHandle; |
| import android.os.Vibrator; |
| import android.os.SystemVibrator; |
| import android.os.storage.IMountService; |
| import android.os.storage.IMountShutdownObserver; |
| import android.system.ErrnoException; |
| import android.system.Os; |
| |
| import com.android.internal.telephony.ITelephony; |
| import com.android.server.pm.PackageManagerService; |
| |
| import android.util.Log; |
| import android.view.WindowManager; |
| |
| import java.io.BufferedReader; |
| import java.io.File; |
| import java.io.FileReader; |
| import java.io.IOException; |
| |
| public final class ShutdownThread extends Thread { |
| // constants |
| private static final String TAG = "ShutdownThread"; |
| private static final int PHONE_STATE_POLL_SLEEP_MSEC = 500; |
| // maximum time we wait for the shutdown broadcast before going on. |
| private static final int MAX_BROADCAST_TIME = 10*1000; |
| private static final int MAX_SHUTDOWN_WAIT_TIME = 20*1000; |
| private static final int MAX_RADIO_WAIT_TIME = 12*1000; |
| private static final int MAX_UNCRYPT_WAIT_TIME = 15*60*1000; |
| // constants for progress bar. the values are roughly estimated based on timeout. |
| private static final int BROADCAST_STOP_PERCENT = 2; |
| private static final int ACTIVITY_MANAGER_STOP_PERCENT = 4; |
| private static final int PACKAGE_MANAGER_STOP_PERCENT = 6; |
| private static final int RADIO_STOP_PERCENT = 18; |
| private static final int MOUNT_SERVICE_STOP_PERCENT = 20; |
| |
| // length of vibration before shutting down |
| private static final int SHUTDOWN_VIBRATE_MS = 500; |
| |
| // state tracking |
| private static Object sIsStartedGuard = new Object(); |
| private static boolean sIsStarted = false; |
| |
| // uncrypt status files |
| private static final String UNCRYPT_STATUS_FILE = "/cache/recovery/uncrypt_status"; |
| private static final String UNCRYPT_PACKAGE_FILE = "/cache/recovery/uncrypt_file"; |
| |
| private static boolean mReboot; |
| private static boolean mRebootSafeMode; |
| private static boolean mRebootUpdate; |
| private static String mRebootReason; |
| |
| // Provides shutdown assurance in case the system_server is killed |
| public static final String SHUTDOWN_ACTION_PROPERTY = "sys.shutdown.requested"; |
| |
| // Indicates whether we are rebooting into safe mode |
| public static final String REBOOT_SAFEMODE_PROPERTY = "persist.sys.safemode"; |
| |
| // static instance of this thread |
| private static final ShutdownThread sInstance = new ShutdownThread(); |
| |
| private static final AudioAttributes VIBRATION_ATTRIBUTES = new AudioAttributes.Builder() |
| .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION) |
| .setUsage(AudioAttributes.USAGE_ASSISTANCE_SONIFICATION) |
| .build(); |
| |
| private final Object mActionDoneSync = new Object(); |
| private boolean mActionDone; |
| private Context mContext; |
| private PowerManager mPowerManager; |
| private PowerManager.WakeLock mCpuWakeLock; |
| private PowerManager.WakeLock mScreenWakeLock; |
| private Handler mHandler; |
| |
| private static AlertDialog sConfirmDialog; |
| private ProgressDialog mProgressDialog; |
| |
| private ShutdownThread() { |
| } |
| |
| /** |
| * Request a clean shutdown, waiting for subsystems to clean up their |
| * state etc. Must be called from a Looper thread in which its UI |
| * is shown. |
| * |
| * @param context Context used to display the shutdown progress dialog. |
| * @param confirm true if user confirmation is needed before shutting down. |
| */ |
| public static void shutdown(final Context context, boolean confirm) { |
| mReboot = false; |
| mRebootSafeMode = false; |
| shutdownInner(context, confirm); |
| } |
| |
| static void shutdownInner(final Context context, boolean confirm) { |
| // ensure that only one thread is trying to power down. |
| // any additional calls are just returned |
| synchronized (sIsStartedGuard) { |
| if (sIsStarted) { |
| Log.d(TAG, "Request to shutdown already running, returning."); |
| return; |
| } |
| } |
| |
| final int longPressBehavior = context.getResources().getInteger( |
| com.android.internal.R.integer.config_longPressOnPowerBehavior); |
| final int resourceId = mRebootSafeMode |
| ? com.android.internal.R.string.reboot_safemode_confirm |
| : (longPressBehavior == 2 |
| ? com.android.internal.R.string.shutdown_confirm_question |
| : com.android.internal.R.string.shutdown_confirm); |
| |
| Log.d(TAG, "Notifying thread to start shutdown longPressBehavior=" + longPressBehavior); |
| |
| if (confirm) { |
| final CloseDialogReceiver closer = new CloseDialogReceiver(context); |
| if (sConfirmDialog != null) { |
| sConfirmDialog.dismiss(); |
| } |
| sConfirmDialog = new AlertDialog.Builder(context) |
| .setTitle(mRebootSafeMode |
| ? com.android.internal.R.string.reboot_safemode_title |
| : com.android.internal.R.string.power_off) |
| .setMessage(resourceId) |
| .setPositiveButton(com.android.internal.R.string.yes, new DialogInterface.OnClickListener() { |
| public void onClick(DialogInterface dialog, int which) { |
| beginShutdownSequence(context); |
| } |
| }) |
| .setNegativeButton(com.android.internal.R.string.no, null) |
| .create(); |
| closer.dialog = sConfirmDialog; |
| sConfirmDialog.setOnDismissListener(closer); |
| sConfirmDialog.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG); |
| sConfirmDialog.show(); |
| } else { |
| beginShutdownSequence(context); |
| } |
| } |
| |
| private static class CloseDialogReceiver extends BroadcastReceiver |
| implements DialogInterface.OnDismissListener { |
| private Context mContext; |
| public Dialog dialog; |
| |
| CloseDialogReceiver(Context context) { |
| mContext = context; |
| IntentFilter filter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS); |
| context.registerReceiver(this, filter); |
| } |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| dialog.cancel(); |
| } |
| |
| public void onDismiss(DialogInterface unused) { |
| mContext.unregisterReceiver(this); |
| } |
| } |
| |
| /** |
| * Request a clean shutdown, waiting for subsystems to clean up their |
| * state etc. Must be called from a Looper thread in which its UI |
| * is shown. |
| * |
| * @param context Context used to display the shutdown progress dialog. |
| * @param reason code to pass to the kernel (e.g. "recovery"), or null. |
| * @param confirm true if user confirmation is needed before shutting down. |
| */ |
| public static void reboot(final Context context, String reason, boolean confirm) { |
| mReboot = true; |
| mRebootSafeMode = false; |
| mRebootUpdate = false; |
| mRebootReason = reason; |
| shutdownInner(context, confirm); |
| } |
| |
| /** |
| * Request a reboot into safe mode. Must be called from a Looper thread in which its UI |
| * is shown. |
| * |
| * @param context Context used to display the shutdown progress dialog. |
| * @param confirm true if user confirmation is needed before shutting down. |
| */ |
| public static void rebootSafeMode(final Context context, boolean confirm) { |
| mReboot = true; |
| mRebootSafeMode = true; |
| mRebootUpdate = false; |
| mRebootReason = null; |
| shutdownInner(context, confirm); |
| } |
| |
| private static void beginShutdownSequence(Context context) { |
| synchronized (sIsStartedGuard) { |
| if (sIsStarted) { |
| Log.d(TAG, "Shutdown sequence already running, returning."); |
| return; |
| } |
| sIsStarted = true; |
| } |
| |
| // Throw up a system dialog to indicate the device is rebooting / shutting down. |
| ProgressDialog pd = new ProgressDialog(context); |
| |
| // Path 1: Reboot to recovery and install the update |
| // Condition: mRebootReason == REBOOT_RECOVERY and mRebootUpdate == True |
| // (mRebootUpdate is set by checking if /cache/recovery/uncrypt_file exists.) |
| // UI: progress bar |
| // |
| // Path 2: Reboot to recovery for factory reset |
| // Condition: mRebootReason == REBOOT_RECOVERY |
| // UI: spinning circle only (no progress bar) |
| // |
| // Path 3: Regular reboot / shutdown |
| // Condition: Otherwise |
| // UI: spinning circle only (no progress bar) |
| if (PowerManager.REBOOT_RECOVERY.equals(mRebootReason)) { |
| mRebootUpdate = new File(UNCRYPT_PACKAGE_FILE).exists(); |
| if (mRebootUpdate) { |
| pd.setTitle(context.getText(com.android.internal.R.string.reboot_to_update_title)); |
| pd.setMessage(context.getText( |
| com.android.internal.R.string.reboot_to_update_prepare)); |
| pd.setMax(100); |
| pd.setProgressNumberFormat(null); |
| pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); |
| pd.setProgress(0); |
| pd.setIndeterminate(false); |
| } else { |
| // Factory reset path. Set the dialog message accordingly. |
| pd.setTitle(context.getText(com.android.internal.R.string.reboot_to_reset_title)); |
| pd.setMessage(context.getText( |
| com.android.internal.R.string.reboot_to_reset_message)); |
| pd.setIndeterminate(true); |
| } |
| } else { |
| pd.setTitle(context.getText(com.android.internal.R.string.power_off)); |
| pd.setMessage(context.getText(com.android.internal.R.string.shutdown_progress)); |
| pd.setIndeterminate(true); |
| } |
| pd.setCancelable(false); |
| pd.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG); |
| |
| pd.show(); |
| |
| sInstance.mProgressDialog = pd; |
| sInstance.mContext = context; |
| sInstance.mPowerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE); |
| |
| // make sure we never fall asleep again |
| sInstance.mCpuWakeLock = null; |
| try { |
| sInstance.mCpuWakeLock = sInstance.mPowerManager.newWakeLock( |
| PowerManager.PARTIAL_WAKE_LOCK, TAG + "-cpu"); |
| sInstance.mCpuWakeLock.setReferenceCounted(false); |
| sInstance.mCpuWakeLock.acquire(); |
| } catch (SecurityException e) { |
| Log.w(TAG, "No permission to acquire wake lock", e); |
| sInstance.mCpuWakeLock = null; |
| } |
| |
| // also make sure the screen stays on for better user experience |
| sInstance.mScreenWakeLock = null; |
| if (sInstance.mPowerManager.isScreenOn()) { |
| try { |
| sInstance.mScreenWakeLock = sInstance.mPowerManager.newWakeLock( |
| PowerManager.FULL_WAKE_LOCK, TAG + "-screen"); |
| sInstance.mScreenWakeLock.setReferenceCounted(false); |
| sInstance.mScreenWakeLock.acquire(); |
| } catch (SecurityException e) { |
| Log.w(TAG, "No permission to acquire wake lock", e); |
| sInstance.mScreenWakeLock = null; |
| } |
| } |
| |
| // start the thread that initiates shutdown |
| sInstance.mHandler = new Handler() { |
| }; |
| sInstance.start(); |
| } |
| |
| void actionDone() { |
| synchronized (mActionDoneSync) { |
| mActionDone = true; |
| mActionDoneSync.notifyAll(); |
| } |
| } |
| |
| /** |
| * Makes sure we handle the shutdown gracefully. |
| * Shuts off power regardless of radio and bluetooth state if the alloted time has passed. |
| */ |
| public void run() { |
| BroadcastReceiver br = new BroadcastReceiver() { |
| @Override public void onReceive(Context context, Intent intent) { |
| // We don't allow apps to cancel this, so ignore the result. |
| actionDone(); |
| } |
| }; |
| |
| /* |
| * Write a system property in case the system_server reboots before we |
| * get to the actual hardware restart. If that happens, we'll retry at |
| * the beginning of the SystemServer startup. |
| */ |
| { |
| String reason = (mReboot ? "1" : "0") + (mRebootReason != null ? mRebootReason : ""); |
| SystemProperties.set(SHUTDOWN_ACTION_PROPERTY, reason); |
| } |
| |
| /* |
| * If we are rebooting into safe mode, write a system property |
| * indicating so. |
| */ |
| if (mRebootSafeMode) { |
| SystemProperties.set(REBOOT_SAFEMODE_PROPERTY, "1"); |
| } |
| |
| Log.i(TAG, "Sending shutdown broadcast..."); |
| |
| // First send the high-level shut down broadcast. |
| mActionDone = false; |
| Intent intent = new Intent(Intent.ACTION_SHUTDOWN); |
| intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND); |
| mContext.sendOrderedBroadcastAsUser(intent, |
| UserHandle.ALL, null, br, mHandler, 0, null, null); |
| |
| final long endTime = SystemClock.elapsedRealtime() + MAX_BROADCAST_TIME; |
| synchronized (mActionDoneSync) { |
| while (!mActionDone) { |
| long delay = endTime - SystemClock.elapsedRealtime(); |
| if (delay <= 0) { |
| Log.w(TAG, "Shutdown broadcast timed out"); |
| break; |
| } else if (mRebootUpdate) { |
| int status = (int)((MAX_BROADCAST_TIME - delay) * 1.0 * |
| BROADCAST_STOP_PERCENT / MAX_BROADCAST_TIME); |
| sInstance.setRebootProgress(status, null); |
| } |
| try { |
| mActionDoneSync.wait(Math.min(delay, PHONE_STATE_POLL_SLEEP_MSEC)); |
| } catch (InterruptedException e) { |
| } |
| } |
| } |
| if (mRebootUpdate) { |
| sInstance.setRebootProgress(BROADCAST_STOP_PERCENT, null); |
| } |
| |
| Log.i(TAG, "Shutting down activity manager..."); |
| |
| final IActivityManager am = |
| ActivityManagerNative.asInterface(ServiceManager.checkService("activity")); |
| if (am != null) { |
| try { |
| am.shutdown(MAX_BROADCAST_TIME); |
| } catch (RemoteException e) { |
| } |
| } |
| if (mRebootUpdate) { |
| sInstance.setRebootProgress(ACTIVITY_MANAGER_STOP_PERCENT, null); |
| } |
| |
| Log.i(TAG, "Shutting down package manager..."); |
| |
| final PackageManagerService pm = (PackageManagerService) |
| ServiceManager.getService("package"); |
| if (pm != null) { |
| pm.shutdown(); |
| } |
| if (mRebootUpdate) { |
| sInstance.setRebootProgress(PACKAGE_MANAGER_STOP_PERCENT, null); |
| } |
| |
| // Shutdown radios. |
| shutdownRadios(MAX_RADIO_WAIT_TIME); |
| if (mRebootUpdate) { |
| sInstance.setRebootProgress(RADIO_STOP_PERCENT, null); |
| } |
| |
| // Shutdown MountService to ensure media is in a safe state |
| IMountShutdownObserver observer = new IMountShutdownObserver.Stub() { |
| public void onShutDownComplete(int statusCode) throws RemoteException { |
| Log.w(TAG, "Result code " + statusCode + " from MountService.shutdown"); |
| actionDone(); |
| } |
| }; |
| |
| Log.i(TAG, "Shutting down MountService"); |
| |
| // Set initial variables and time out time. |
| mActionDone = false; |
| final long endShutTime = SystemClock.elapsedRealtime() + MAX_SHUTDOWN_WAIT_TIME; |
| synchronized (mActionDoneSync) { |
| try { |
| final IMountService mount = IMountService.Stub.asInterface( |
| ServiceManager.checkService("mount")); |
| if (mount != null) { |
| mount.shutdown(observer); |
| } else { |
| Log.w(TAG, "MountService unavailable for shutdown"); |
| } |
| } catch (Exception e) { |
| Log.e(TAG, "Exception during MountService shutdown", e); |
| } |
| while (!mActionDone) { |
| long delay = endShutTime - SystemClock.elapsedRealtime(); |
| if (delay <= 0) { |
| Log.w(TAG, "Shutdown wait timed out"); |
| break; |
| } else if (mRebootUpdate) { |
| int status = (int)((MAX_SHUTDOWN_WAIT_TIME - delay) * 1.0 * |
| (MOUNT_SERVICE_STOP_PERCENT - RADIO_STOP_PERCENT) / |
| MAX_SHUTDOWN_WAIT_TIME); |
| status += RADIO_STOP_PERCENT; |
| sInstance.setRebootProgress(status, null); |
| } |
| try { |
| mActionDoneSync.wait(Math.min(delay, PHONE_STATE_POLL_SLEEP_MSEC)); |
| } catch (InterruptedException e) { |
| } |
| } |
| } |
| if (mRebootUpdate) { |
| sInstance.setRebootProgress(MOUNT_SERVICE_STOP_PERCENT, null); |
| |
| // If it's to reboot to install update, invoke uncrypt via init service. |
| uncrypt(); |
| } |
| |
| rebootOrShutdown(mContext, mReboot, mRebootReason); |
| } |
| |
| private void setRebootProgress(final int progress, final CharSequence message) { |
| mHandler.post(new Runnable() { |
| @Override |
| public void run() { |
| if (mProgressDialog != null) { |
| mProgressDialog.setProgress(progress); |
| if (message != null) { |
| mProgressDialog.setMessage(message); |
| } |
| } |
| } |
| }); |
| } |
| |
| private void shutdownRadios(final int timeout) { |
| // If a radio is wedged, disabling it may hang so we do this work in another thread, |
| // just in case. |
| final long endTime = SystemClock.elapsedRealtime() + timeout; |
| final boolean[] done = new boolean[1]; |
| Thread t = new Thread() { |
| public void run() { |
| boolean nfcOff; |
| boolean bluetoothOff; |
| boolean radioOff; |
| |
| final INfcAdapter nfc = |
| INfcAdapter.Stub.asInterface(ServiceManager.checkService("nfc")); |
| final ITelephony phone = |
| ITelephony.Stub.asInterface(ServiceManager.checkService("phone")); |
| final IBluetoothManager bluetooth = |
| IBluetoothManager.Stub.asInterface(ServiceManager.checkService( |
| BluetoothAdapter.BLUETOOTH_MANAGER_SERVICE)); |
| |
| try { |
| nfcOff = nfc == null || |
| nfc.getState() == NfcAdapter.STATE_OFF; |
| if (!nfcOff) { |
| Log.w(TAG, "Turning off NFC..."); |
| nfc.disable(false); // Don't persist new state |
| } |
| } catch (RemoteException ex) { |
| Log.e(TAG, "RemoteException during NFC shutdown", ex); |
| nfcOff = true; |
| } |
| |
| try { |
| bluetoothOff = bluetooth == null || !bluetooth.isEnabled(); |
| if (!bluetoothOff) { |
| Log.w(TAG, "Disabling Bluetooth..."); |
| bluetooth.disable(false); // disable but don't persist new state |
| } |
| } catch (RemoteException ex) { |
| Log.e(TAG, "RemoteException during bluetooth shutdown", ex); |
| bluetoothOff = true; |
| } |
| |
| try { |
| radioOff = phone == null || !phone.needMobileRadioShutdown(); |
| if (!radioOff) { |
| Log.w(TAG, "Turning off cellular radios..."); |
| phone.shutdownMobileRadios(); |
| } |
| } catch (RemoteException ex) { |
| Log.e(TAG, "RemoteException during radio shutdown", ex); |
| radioOff = true; |
| } |
| |
| Log.i(TAG, "Waiting for NFC, Bluetooth and Radio..."); |
| |
| long delay = endTime - SystemClock.elapsedRealtime(); |
| while (delay > 0) { |
| if (mRebootUpdate) { |
| int status = (int)((timeout - delay) * 1.0 * |
| (RADIO_STOP_PERCENT - PACKAGE_MANAGER_STOP_PERCENT) / timeout); |
| status += PACKAGE_MANAGER_STOP_PERCENT; |
| sInstance.setRebootProgress(status, null); |
| } |
| |
| if (!bluetoothOff) { |
| try { |
| bluetoothOff = !bluetooth.isEnabled(); |
| } catch (RemoteException ex) { |
| Log.e(TAG, "RemoteException during bluetooth shutdown", ex); |
| bluetoothOff = true; |
| } |
| if (bluetoothOff) { |
| Log.i(TAG, "Bluetooth turned off."); |
| } |
| } |
| if (!radioOff) { |
| try { |
| radioOff = !phone.needMobileRadioShutdown(); |
| } catch (RemoteException ex) { |
| Log.e(TAG, "RemoteException during radio shutdown", ex); |
| radioOff = true; |
| } |
| if (radioOff) { |
| Log.i(TAG, "Radio turned off."); |
| } |
| } |
| if (!nfcOff) { |
| try { |
| nfcOff = nfc.getState() == NfcAdapter.STATE_OFF; |
| } catch (RemoteException ex) { |
| Log.e(TAG, "RemoteException during NFC shutdown", ex); |
| nfcOff = true; |
| } |
| if (nfcOff) { |
| Log.i(TAG, "NFC turned off."); |
| } |
| } |
| |
| if (radioOff && bluetoothOff && nfcOff) { |
| Log.i(TAG, "NFC, Radio and Bluetooth shutdown complete."); |
| done[0] = true; |
| break; |
| } |
| SystemClock.sleep(PHONE_STATE_POLL_SLEEP_MSEC); |
| |
| delay = endTime - SystemClock.elapsedRealtime(); |
| } |
| } |
| }; |
| |
| t.start(); |
| try { |
| t.join(timeout); |
| } catch (InterruptedException ex) { |
| } |
| if (!done[0]) { |
| Log.w(TAG, "Timed out waiting for NFC, Radio and Bluetooth shutdown."); |
| } |
| } |
| |
| /** |
| * Do not call this directly. Use {@link #reboot(Context, String, boolean)} |
| * or {@link #shutdown(Context, boolean)} instead. |
| * |
| * @param context Context used to vibrate or null without vibration |
| * @param reboot true to reboot or false to shutdown |
| * @param reason reason for reboot |
| */ |
| public static void rebootOrShutdown(final Context context, boolean reboot, String reason) { |
| if (reboot) { |
| Log.i(TAG, "Rebooting, reason: " + reason); |
| PowerManagerService.lowLevelReboot(reason); |
| Log.e(TAG, "Reboot failed, will attempt shutdown instead"); |
| } else if (SHUTDOWN_VIBRATE_MS > 0 && context != null) { |
| // vibrate before shutting down |
| Vibrator vibrator = new SystemVibrator(context); |
| try { |
| vibrator.vibrate(SHUTDOWN_VIBRATE_MS, VIBRATION_ATTRIBUTES); |
| } catch (Exception e) { |
| // Failure to vibrate shouldn't interrupt shutdown. Just log it. |
| Log.w(TAG, "Failed to vibrate during shutdown.", e); |
| } |
| |
| // vibrator is asynchronous so we need to wait to avoid shutting down too soon. |
| try { |
| Thread.sleep(SHUTDOWN_VIBRATE_MS); |
| } catch (InterruptedException unused) { |
| } |
| } |
| |
| // Shutdown power |
| Log.i(TAG, "Performing low-level shutdown..."); |
| PowerManagerService.lowLevelShutdown(); |
| } |
| |
| private void uncrypt() { |
| Log.i(TAG, "Calling uncrypt and monitoring the progress..."); |
| |
| final boolean[] done = new boolean[1]; |
| done[0] = false; |
| Thread t = new Thread() { |
| @Override |
| public void run() { |
| // Create the status pipe file to communicate with /system/bin/uncrypt. |
| new File(UNCRYPT_STATUS_FILE).delete(); |
| try { |
| Os.mkfifo(UNCRYPT_STATUS_FILE, 0600); |
| } catch (ErrnoException e) { |
| Log.w(TAG, "ErrnoException when creating named pipe \"" + UNCRYPT_STATUS_FILE + |
| "\": " + e.getMessage()); |
| } |
| |
| SystemProperties.set("ctl.start", "uncrypt"); |
| |
| // Read the status from the pipe. |
| try (BufferedReader reader = new BufferedReader( |
| new FileReader(UNCRYPT_STATUS_FILE))) { |
| |
| int lastStatus = Integer.MIN_VALUE; |
| while (true) { |
| String str = reader.readLine(); |
| try { |
| int status = Integer.parseInt(str); |
| |
| // Avoid flooding the log with the same message. |
| if (status == lastStatus && lastStatus != Integer.MIN_VALUE) { |
| continue; |
| } |
| lastStatus = status; |
| |
| if (status >= 0 && status < 100) { |
| // Update status |
| Log.d(TAG, "uncrypt read status: " + status); |
| // Scale down to [MOUNT_SERVICE_STOP_PERCENT, 100). |
| status = (int)(status * (100.0 - MOUNT_SERVICE_STOP_PERCENT) / 100); |
| status += MOUNT_SERVICE_STOP_PERCENT; |
| CharSequence msg = mContext.getText( |
| com.android.internal.R.string.reboot_to_update_package); |
| sInstance.setRebootProgress(status, msg); |
| } else if (status == 100) { |
| Log.d(TAG, "uncrypt successfully finished."); |
| CharSequence msg = mContext.getText( |
| com.android.internal.R.string.reboot_to_update_reboot); |
| sInstance.setRebootProgress(status, msg); |
| break; |
| } else { |
| // Error in /system/bin/uncrypt. Or it's rebooting to recovery |
| // to perform other operations (e.g. factory reset). |
| Log.d(TAG, "uncrypt failed with status: " + status); |
| break; |
| } |
| } catch (NumberFormatException unused) { |
| Log.d(TAG, "uncrypt invalid status received: " + str); |
| break; |
| } |
| } |
| } catch (IOException unused) { |
| Log.w(TAG, "IOException when reading \"" + UNCRYPT_STATUS_FILE + "\"."); |
| } |
| done[0] = true; |
| } |
| }; |
| t.start(); |
| |
| try { |
| t.join(MAX_UNCRYPT_WAIT_TIME); |
| } catch (InterruptedException unused) { |
| } |
| if (!done[0]) { |
| Log.w(TAG, "Timed out waiting for uncrypt."); |
| } |
| } |
| } |
