/* * 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.ActivityManagerInternal; import android.app.AlertDialog; import android.app.BroadcastOptions; import android.app.Dialog; import android.app.IActivityManager; import android.app.ProgressDialog; import android.app.admin.SecurityLog; import android.content.BroadcastReceiver; import android.content.Context; import android.content.DialogInterface; import android.content.IIntentReceiver; import android.content.Intent; import android.content.IntentFilter; import android.content.pm.PackageManagerInternal; import android.os.Bundle; import android.os.FileUtils; import android.os.Handler; import android.os.PowerManager; import android.os.RecoverySystem; import android.os.RemoteException; import android.os.ServiceManager; import android.os.SystemClock; import android.os.SystemProperties; import android.os.SystemVibrator; import android.os.Trace; import android.os.UserHandle; import android.os.UserManager; import android.os.VibrationAttributes; import android.os.VibrationEffect; import android.os.Vibrator; import android.os.vibrator.persistence.VibrationXmlParser; import android.provider.Settings; import android.telephony.TelephonyManager; import android.text.TextUtils; import android.util.ArrayMap; import android.util.Log; import android.util.Slog; import android.util.TimingsTraceLog; import android.view.SurfaceControl; import android.view.WindowManager; import com.android.internal.annotations.VisibleForTesting; import com.android.server.LocalServices; import com.android.server.PackageWatchdog; import com.android.server.statusbar.StatusBarManagerInternal; import java.io.File; import java.io.FileOutputStream; import java.io.FileReader; import java.io.IOException; import java.nio.charset.StandardCharsets; public final class ShutdownThread extends Thread { // constants private static final boolean DEBUG = false; private static final String TAG = "ShutdownThread"; private static final int ACTION_DONE_POLL_WAIT_MS = 500; private static final int RADIOS_STATE_POLL_SLEEP_MS = 100; // 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_CHECK_POINTS_DUMP_WAIT_TIME = 10 * 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 @VisibleForTesting static final int DEFAULT_SHUTDOWN_VIBRATE_MS = 500; // state tracking private static final Object sIsStartedGuard = new Object(); private static boolean sIsStarted = false; private static boolean mReboot; private static boolean mRebootSafeMode; private static boolean mRebootHasProgressBar; private static String mReason; // 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"; public static final String RO_SAFEMODE_PROPERTY = "ro.sys.safemode"; // static instance of this thread private static final ShutdownThread sInstance = new ShutdownThread(); // Metrics that will be reported to tron after reboot private static final ArrayMap TRON_METRICS = new ArrayMap<>(); // File to use for saving shutdown metrics private static final String METRICS_FILE_BASENAME = "/data/system/shutdown-metrics"; // File to use for saving shutdown check points private static final String CHECK_POINTS_FILE_BASENAME = "/data/system/shutdown-checkpoints/checkpoints"; // Metrics names to be persisted in shutdown-metrics file private static String METRIC_SYSTEM_SERVER = "shutdown_system_server"; private static String METRIC_SEND_BROADCAST = "shutdown_send_shutdown_broadcast"; private static String METRIC_AM = "shutdown_activity_manager"; private static String METRIC_PM = "shutdown_package_manager"; private static String METRIC_RADIOS = "shutdown_radios"; private static String METRIC_RADIO = "shutdown_radio"; private static String METRIC_SHUTDOWN_TIME_START = "begin_shutdown"; private final Injector mInjector; 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() { this(new Injector()); } @VisibleForTesting ShutdownThread(Injector injector) { mInjector = injector; } /** * 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. This must be a context * suitable for displaying UI (aka Themable). * @param reason code to pass to android_reboot() (e.g. "userrequested"), or null. * @param confirm true if user confirmation is needed before shutting down. */ public static void shutdown(final Context context, String reason, boolean confirm) { mReboot = false; mRebootSafeMode = false; mReason = reason; shutdownInner(context, confirm); } private static void shutdownInner(final Context context, boolean confirm) { // ShutdownThread is called from many places, so best to verify here that the context passed // in is themed. context.assertRuntimeOverlayThemable(); // ensure that only one thread is trying to power down. // any additional calls are just returned synchronized (sIsStartedGuard) { if (sIsStarted) { if (DEBUG) { Log.d(TAG, "Request to shutdown already running, returning."); } return; } } // Add checkpoint for this shutdown attempt. The user might still cancel the dialog, but // this point preserves the system trace of the trigger point of the ShutdownThread. ShutdownCheckPoints.recordCheckPoint(/* reason= */ null); 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); if (DEBUG) { 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, Context.RECEIVER_EXPORTED); } @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. This must be a context * suitable for displaying UI (aka Themable). * @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; mRebootHasProgressBar = false; mReason = 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. This must be a context * suitable for displaying UI (aka Themable). * @param confirm true if user confirmation is needed before shutting down. */ public static void rebootSafeMode(final Context context, boolean confirm) { UserManager um = (UserManager) context.getSystemService(Context.USER_SERVICE); if (um.hasUserRestriction(UserManager.DISALLOW_SAFE_BOOT)) { return; } mReboot = true; mRebootSafeMode = true; mRebootHasProgressBar = false; mReason = null; shutdownInner(context, confirm); } private static ProgressDialog showShutdownDialog(Context context) { // Throw up a system dialog to indicate the device is rebooting / shutting down. ProgressDialog pd = new ProgressDialog(context); // Path 1: Reboot to recovery for update // Condition: mReason startswith REBOOT_RECOVERY_UPDATE // // Path 1a: uncrypt needed // Condition: if /cache/recovery/uncrypt_file exists but // /cache/recovery/block.map doesn't. // UI: determinate progress bar (mRebootHasProgressBar == True) // // * Path 1a is expected to be removed once the GmsCore shipped on // device always calls uncrypt prior to reboot. // // Path 1b: uncrypt already done // UI: spinning circle only (no progress bar) // // Path 2: Reboot to recovery for factory reset // Condition: mReason == REBOOT_RECOVERY // UI: spinning circle only (no progress bar) // // Path 3: Regular reboot / shutdown // Condition: Otherwise // UI: spinning circle only (no progress bar) // mReason could be "recovery-update" or "recovery-update,quiescent". if (mReason != null && mReason.startsWith(PowerManager.REBOOT_RECOVERY_UPDATE)) { // We need the progress bar if uncrypt will be invoked during the // reboot, which might be time-consuming. mRebootHasProgressBar = RecoverySystem.UNCRYPT_PACKAGE_FILE.exists() && !(RecoverySystem.BLOCK_MAP_FILE.exists()); pd.setTitle(context.getText(com.android.internal.R.string.reboot_to_update_title)); if (mRebootHasProgressBar) { pd.setMax(100); pd.setProgress(0); pd.setIndeterminate(false); boolean showPercent = context.getResources().getBoolean( com.android.internal.R.bool.config_showPercentageTextDuringRebootToUpdate); if (!showPercent) { pd.setProgressPercentFormat(null); } pd.setProgressNumberFormat(null); pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); pd.setMessage(context.getText( com.android.internal.R.string.reboot_to_update_prepare)); } else { if (showSysuiReboot()) { return null; } pd.setIndeterminate(true); pd.setMessage(context.getText( com.android.internal.R.string.reboot_to_update_reboot)); } } else if (mReason != null && mReason.equals(PowerManager.REBOOT_RECOVERY)) { boolean prioritizeSysUiForRecoveryRebootUi = context.getResources().getBoolean( com.android.internal.R.bool.config_prioritizeSysUiForRecoveryRebootUi); if (prioritizeSysUiForRecoveryRebootUi && showSysuiReboot()) { return null; } else if (PackageWatchdog.isRecoveryTriggeredReboot()) { // We're not actually doing a factory reset yet; we're rebooting // to ask the user if they'd like to reset, so give them a less // scary dialog message. 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); } else if (showSysuiReboot()) { return null; } 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 { if (showSysuiReboot()) { return null; } 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(); return pd; } private static boolean showSysuiReboot() { if (DEBUG) { Log.d(TAG, "Attempting to use SysUI shutdown UI"); } try { StatusBarManagerInternal service = LocalServices.getService( StatusBarManagerInternal.class); if (service.showShutdownUi(mReboot, mReason)) { // Sysui will handle shutdown UI. if (DEBUG) { Log.d(TAG, "SysUI handling shutdown UI"); } return true; } } catch (Exception e) { // If anything went wrong, ignore it and use fallback ui } if (DEBUG) { Log.d(TAG, "SysUI is unavailable"); } return false; } private static void beginShutdownSequence(Context context) { synchronized (sIsStartedGuard) { if (sIsStarted) { if (DEBUG) { Log.d(TAG, "Shutdown sequence already running, returning."); } return; } sIsStarted = true; } /* * 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. * * NOTE: the `init` process also monitors this property to kick off a * watchdog making sure that the shutdown process doesn't take too long. */ { String reason = (sInstance.mReboot ? "1" : "0") + (sInstance.mReason != null ? sInstance.mReason : ""); SystemProperties.set(SHUTDOWN_ACTION_PROPERTY, reason); } sInstance.mProgressDialog = showShutdownDialog(context); 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; } } if (SecurityLog.isLoggingEnabled()) { SecurityLog.writeEvent(SecurityLog.TAG_OS_SHUTDOWN); } // 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 state if the allotted time has passed. */ public void run() { TimingsTraceLog shutdownTimingLog = newTimingsLog(); shutdownTimingLog.traceBegin("SystemServerShutdown"); metricShutdownStart(); metricStarted(METRIC_SYSTEM_SERVER); // Notify SurfaceFlinger that the device is shutting down. // Transaction traces should be captured at this stage. SurfaceControl.notifyShutdown(); // Start dumping check points for this shutdown in a separate thread. Thread dumpCheckPointsThread = ShutdownCheckPoints.newDumpThread( new File(CHECK_POINTS_FILE_BASENAME)); dumpCheckPointsThread.start(); /* * If we are rebooting into safe mode, write a system property * indicating so. */ if (mRebootSafeMode) { SystemProperties.set(REBOOT_SAFEMODE_PROPERTY, "1"); } shutdownTimingLog.traceBegin("DumpPreRebootInfo"); try { Slog.i(TAG, "Logging pre-reboot information..."); PreRebootLogger.log(mContext); } catch (Exception e) { Slog.e(TAG, "Failed to log pre-reboot information", e); } shutdownTimingLog.traceEnd(); // DumpPreRebootInfo metricStarted(METRIC_SEND_BROADCAST); shutdownTimingLog.traceBegin("SendShutdownBroadcast"); 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 | Intent.FLAG_RECEIVER_REGISTERED_ONLY); final Bundle opts = BroadcastOptions.makeBasic() .setDeferralPolicy(BroadcastOptions.DEFERRAL_POLICY_UNTIL_ACTIVE) .toBundle(); final ActivityManagerInternal activityManagerInternal = LocalServices.getService( ActivityManagerInternal.class); activityManagerInternal.broadcastIntentWithCallback(intent, new IIntentReceiver.Stub() { @Override public void performReceive(Intent intent, int resultCode, String data, Bundle extras, boolean ordered, boolean sticky, int sendingUser) { mHandler.post(ShutdownThread.this::actionDone); } }, null, UserHandle.USER_ALL, null, null, opts); 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 (mRebootHasProgressBar) { 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, ACTION_DONE_POLL_WAIT_MS)); } catch (InterruptedException e) { } } } if (mRebootHasProgressBar) { sInstance.setRebootProgress(BROADCAST_STOP_PERCENT, null); } shutdownTimingLog.traceEnd(); // SendShutdownBroadcast metricEnded(METRIC_SEND_BROADCAST); Log.i(TAG, "Shutting down activity manager..."); shutdownTimingLog.traceBegin("ShutdownActivityManager"); metricStarted(METRIC_AM); final IActivityManager am = IActivityManager.Stub.asInterface(ServiceManager.checkService("activity")); if (am != null) { try { am.shutdown(MAX_BROADCAST_TIME); } catch (RemoteException e) { } } if (mRebootHasProgressBar) { sInstance.setRebootProgress(ACTIVITY_MANAGER_STOP_PERCENT, null); } shutdownTimingLog.traceEnd();// ShutdownActivityManager metricEnded(METRIC_AM); Log.i(TAG, "Shutting down package manager..."); shutdownTimingLog.traceBegin("ShutdownPackageManager"); metricStarted(METRIC_PM); final PackageManagerInternal pm = LocalServices.getService(PackageManagerInternal.class); if (pm != null) { pm.shutdown(); } if (mRebootHasProgressBar) { sInstance.setRebootProgress(PACKAGE_MANAGER_STOP_PERCENT, null); } shutdownTimingLog.traceEnd(); // ShutdownPackageManager metricEnded(METRIC_PM); // Shutdown radios. shutdownTimingLog.traceBegin("ShutdownRadios"); metricStarted(METRIC_RADIOS); shutdownRadios(MAX_RADIO_WAIT_TIME); if (mRebootHasProgressBar) { sInstance.setRebootProgress(RADIO_STOP_PERCENT, null); } shutdownTimingLog.traceEnd(); // ShutdownRadios metricEnded(METRIC_RADIOS); if (mRebootHasProgressBar) { sInstance.setRebootProgress(MOUNT_SERVICE_STOP_PERCENT, null); // If it's to reboot to install an update and uncrypt hasn't been // done yet, trigger it now. uncrypt(); } // Wait for the check points dump thread to finish, or kill it if not finished in time. shutdownTimingLog.traceBegin("ShutdownCheckPointsDumpWait"); try { dumpCheckPointsThread.join(MAX_CHECK_POINTS_DUMP_WAIT_TIME); } catch (InterruptedException ex) { } shutdownTimingLog.traceEnd(); // ShutdownCheckPointsDumpWait shutdownTimingLog.traceEnd(); // SystemServerShutdown metricEnded(METRIC_SYSTEM_SERVER); saveMetrics(mReboot, mReason); // Remaining work will be done by init, including vold shutdown rebootOrShutdown(mContext, mReboot, mReason); } private static TimingsTraceLog newTimingsLog() { return new TimingsTraceLog("ShutdownTiming", Trace.TRACE_TAG_SYSTEM_SERVER); } private static void metricStarted(String metricKey) { synchronized (TRON_METRICS) { TRON_METRICS.put(metricKey, -1 * SystemClock.elapsedRealtime()); } } private static void metricEnded(String metricKey) { synchronized (TRON_METRICS) { TRON_METRICS .put(metricKey, SystemClock.elapsedRealtime() + TRON_METRICS.get(metricKey)); } } private static void metricShutdownStart() { synchronized (TRON_METRICS) { TRON_METRICS.put(METRIC_SHUTDOWN_TIME_START, System.currentTimeMillis()); } } 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() { TimingsTraceLog shutdownTimingsTraceLog = newTimingsLog(); boolean radioOff; TelephonyManager telephonyManager = mContext.getSystemService( TelephonyManager.class); radioOff = telephonyManager == null || !telephonyManager.isAnyRadioPoweredOn(); if (!radioOff) { Log.w(TAG, "Turning off cellular radios..."); metricStarted(METRIC_RADIO); telephonyManager.shutdownAllRadios(); } Log.i(TAG, "Waiting for Radio..."); long delay = endTime - SystemClock.elapsedRealtime(); while (delay > 0) { if (mRebootHasProgressBar) { 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 (!radioOff) { radioOff = !telephonyManager.isAnyRadioPoweredOn(); if (radioOff) { Log.i(TAG, "Radio turned off."); metricEnded(METRIC_RADIO); shutdownTimingsTraceLog .logDuration("ShutdownRadio", TRON_METRICS.get(METRIC_RADIO)); } } if (radioOff) { Log.i(TAG, "Radio shutdown complete."); done[0] = true; break; } SystemClock.sleep(RADIOS_STATE_POLL_SLEEP_MS); delay = endTime - SystemClock.elapsedRealtime(); } } }; t.start(); try { t.join(timeout); } catch (InterruptedException ex) { } if (!done[0]) { Log.w(TAG, "Timed out waiting for Radio shutdown."); } } /** * Do not call this directly. Use {@link #reboot(Context, String, boolean)} * or {@link #shutdown(Context, String, 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/shutdown */ 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"); reason = null; } else if (context != null) { // vibrate before shutting down try { sInstance.playShutdownVibration(context); } catch (Exception e) { // Failure to vibrate shouldn't interrupt shutdown. Just log it. Log.w(TAG, "Failed to vibrate during shutdown.", e); } } // Shutdown power Log.i(TAG, "Performing low-level shutdown..."); PowerManagerService.lowLevelShutdown(reason); } /** * Plays a vibration for shutdown. Along with playing a shutdown vibration, this method also * sleeps the current Thread for some time, to allow the vibration to finish before the device * shuts down. */ @VisibleForTesting // For testing vibrations without shutting down device void playShutdownVibration(Context context) { if (mInjector.isShutdownVibrationDisabled(context)) { Log.i(TAG, "Vibration disabled in config"); return; } Vibrator vibrator = mInjector.getVibrator(context); if (!vibrator.hasVibrator()) { return; } VibrationEffect vibrationEffect = getValidShutdownVibration(context, vibrator); vibrator.vibrate( vibrationEffect, VibrationAttributes.createForUsage(VibrationAttributes.USAGE_TOUCH)); // vibrator is asynchronous so we have to wait to avoid shutting down too soon. long vibrationDuration = vibrationEffect.getDuration(); // A negative vibration duration may indicate a vibration effect whose duration is not // known by the system (e.g. pre-baked effects). In that case, use the default shutdown // vibration duration. mInjector.sleep(vibrationDuration < 0 ? DEFAULT_SHUTDOWN_VIBRATE_MS : vibrationDuration); } private static void saveMetrics(boolean reboot, String reason) { StringBuilder metricValue = new StringBuilder(); metricValue.append("reboot:"); metricValue.append(reboot ? "y" : "n"); metricValue.append(",").append("reason:").append(reason); final int metricsSize = TRON_METRICS.size(); for (int i = 0; i < metricsSize; i++) { final String name = TRON_METRICS.keyAt(i); final long value = TRON_METRICS.valueAt(i); if (value < 0) { Log.e(TAG, "metricEnded wasn't called for " + name); continue; } metricValue.append(',').append(name).append(':').append(value); } File tmp = new File(METRICS_FILE_BASENAME + ".tmp"); boolean saved = false; try (FileOutputStream fos = new FileOutputStream(tmp)) { fos.write(metricValue.toString().getBytes(StandardCharsets.UTF_8)); saved = true; } catch (IOException e) { Log.e(TAG,"Cannot save shutdown metrics", e); } if (saved) { tmp.renameTo(new File(METRICS_FILE_BASENAME + ".txt")); } } private void uncrypt() { Log.i(TAG, "Calling uncrypt and monitoring the progress..."); final RecoverySystem.ProgressListener progressListener = new RecoverySystem.ProgressListener() { @Override public void onProgress(int status) { if (status >= 0 && status < 100) { // 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) { CharSequence msg = mContext.getText( com.android.internal.R.string.reboot_to_update_reboot); sInstance.setRebootProgress(status, msg); } else { // Ignored } } }; final boolean[] done = new boolean[1]; done[0] = false; Thread t = new Thread() { @Override public void run() { RecoverySystem rs = (RecoverySystem) mContext.getSystemService( Context.RECOVERY_SERVICE); String filename = null; try { filename = FileUtils.readTextFile(RecoverySystem.UNCRYPT_PACKAGE_FILE, 0, null); rs.processPackage(mContext, new File(filename), progressListener); } catch (IOException e) { Log.e(TAG, "Error uncrypting file", e); } 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."); final int uncryptTimeoutError = 100; String timeoutMessage = String.format("uncrypt_time: %d\n" + "uncrypt_error: %d\n", MAX_UNCRYPT_WAIT_TIME / 1000, uncryptTimeoutError); try { FileUtils.stringToFile(RecoverySystem.UNCRYPT_STATUS_FILE, timeoutMessage); } catch (IOException e) { Log.e(TAG, "Failed to write timeout message to uncrypt status", e); } } } /** * Provides a {@link VibrationEffect} to be used for shutdown. * *

The vibration to be played is derived from the shutdown vibration file (which the device * should specify at `com.android.internal.R.string.config_defaultShutdownVibrationFile`). A * fallback vibration maybe used in one of these conditions: *

*/ private VibrationEffect getValidShutdownVibration(Context context, Vibrator vibrator) { VibrationEffect parsedEffect = parseVibrationEffectFromFile( mInjector.getDefaultShutdownVibrationEffectFilePath(context), vibrator); if (parsedEffect == null) { return createDefaultVibrationEffect(); } long parsedEffectDuration = parsedEffect.getDuration(); if (parsedEffectDuration == Long.MAX_VALUE) { // This means that the effect does not have a defined end. // Since we don't want to vibrate forever while trying to shutdown, we ignore this // parsed effect and use the default one instead. Log.w(TAG, "The parsed shutdown vibration is indefinite."); return createDefaultVibrationEffect(); } return parsedEffect; } private static VibrationEffect parseVibrationEffectFromFile( String filePath, Vibrator vibrator) { if (!TextUtils.isEmpty(filePath)) { try { return VibrationXmlParser.parseDocument(new FileReader(filePath)).resolve(vibrator); } catch (Exception e) { Log.e(TAG, "Error parsing default shutdown vibration effect.", e); } } return null; } private static VibrationEffect createDefaultVibrationEffect() { return VibrationEffect.createOneShot( DEFAULT_SHUTDOWN_VIBRATE_MS, VibrationEffect.DEFAULT_AMPLITUDE); } /** Utility class to inject instances, for easy testing. */ @VisibleForTesting static class Injector { public Vibrator getVibrator(Context context) { return new SystemVibrator(context); } public void sleep(long durationMs) { try { Thread.sleep(durationMs); } catch (InterruptedException unused) { // this is not critical and does not require logging. } } public String getDefaultShutdownVibrationEffectFilePath(Context context) { return context.getResources().getString( com.android.internal.R.string.config_defaultShutdownVibrationFile); } public boolean isShutdownVibrationDisabled(Context context) { boolean disabledInConfig = context.getResources().getBoolean( com.android.internal.R.bool.config_disableShutdownVibrationInZen); boolean isZenMode = Settings.Global.getInt(context.getContentResolver(), Settings.Global.ZEN_MODE, Settings.Global.ZEN_MODE_OFF) != Settings.Global.ZEN_MODE_OFF; return disabledInConfig && isZenMode; } } }