1 /* 2 * Copyright (C) 2006-2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.am; 18 19 import static android.Manifest.permission.INTERACT_ACROSS_USERS; 20 import static android.Manifest.permission.INTERACT_ACROSS_USERS_FULL; 21 import static android.Manifest.permission.START_TASKS_FROM_RECENTS; 22 import static android.content.pm.PackageManager.PERMISSION_GRANTED; 23 import static com.android.internal.util.XmlUtils.readBooleanAttribute; 24 import static com.android.internal.util.XmlUtils.readIntAttribute; 25 import static com.android.internal.util.XmlUtils.readLongAttribute; 26 import static com.android.internal.util.XmlUtils.writeBooleanAttribute; 27 import static com.android.internal.util.XmlUtils.writeIntAttribute; 28 import static com.android.internal.util.XmlUtils.writeLongAttribute; 29 import static com.android.server.Watchdog.NATIVE_STACKS_OF_INTEREST; 30 import static org.xmlpull.v1.XmlPullParser.END_DOCUMENT; 31 import static org.xmlpull.v1.XmlPullParser.START_TAG; 32 import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID; 33 import static com.android.server.am.TaskRecord.INVALID_TASK_ID; 34 35 import android.Manifest; 36 import android.app.AppOpsManager; 37 import android.app.ApplicationThreadNative; 38 import android.app.IActivityContainer; 39 import android.app.IActivityContainerCallback; 40 import android.app.IAppTask; 41 import android.app.ITaskStackListener; 42 import android.app.ProfilerInfo; 43 import android.app.admin.DevicePolicyManager; 44 import android.app.usage.UsageEvents; 45 import android.app.usage.UsageStatsManagerInternal; 46 import android.appwidget.AppWidgetManager; 47 import android.content.res.Resources; 48 import android.graphics.Bitmap; 49 import android.graphics.Point; 50 import android.graphics.Rect; 51 import android.os.BatteryStats; 52 import android.os.PersistableBundle; 53 import android.os.storage.IMountService; 54 import android.os.storage.StorageManager; 55 import android.service.voice.IVoiceInteractionSession; 56 import android.util.ArrayMap; 57 import android.util.ArraySet; 58 import android.util.SparseIntArray; 59 60 import android.view.Display; 61 import com.android.internal.R; 62 import com.android.internal.annotations.GuardedBy; 63 import com.android.internal.app.IAppOpsService; 64 import com.android.internal.app.IVoiceInteractor; 65 import com.android.internal.app.ProcessMap; 66 import com.android.internal.app.ProcessStats; 67 import com.android.internal.os.BackgroundThread; 68 import com.android.internal.os.BatteryStatsImpl; 69 import com.android.internal.os.ProcessCpuTracker; 70 import com.android.internal.os.TransferPipe; 71 import com.android.internal.os.Zygote; 72 import com.android.internal.util.FastPrintWriter; 73 import com.android.internal.util.FastXmlSerializer; 74 import com.android.internal.util.MemInfoReader; 75 import com.android.internal.util.Preconditions; 76 import com.android.server.AppOpsService; 77 import com.android.server.AttributeCache; 78 import com.android.server.IntentResolver; 79 import com.android.server.LocalServices; 80 import com.android.server.ServiceThread; 81 import com.android.server.SystemService; 82 import com.android.server.SystemServiceManager; 83 import com.android.server.Watchdog; 84 import com.android.server.am.ActivityStack.ActivityState; 85 import com.android.server.firewall.IntentFirewall; 86 import com.android.server.pm.Installer; 87 import com.android.server.pm.UserManagerService; 88 import com.android.server.statusbar.StatusBarManagerInternal; 89 import com.android.server.wm.AppTransition; 90 import com.android.server.wm.WindowManagerService; 91 import com.google.android.collect.Lists; 92 import com.google.android.collect.Maps; 93 94 import libcore.io.IoUtils; 95 96 import org.xmlpull.v1.XmlPullParser; 97 import org.xmlpull.v1.XmlPullParserException; 98 import org.xmlpull.v1.XmlSerializer; 99 100 import android.app.Activity; 101 import android.app.ActivityManager; 102 import android.app.ActivityManager.RunningTaskInfo; 103 import android.app.ActivityManager.StackInfo; 104 import android.app.ActivityManagerInternal; 105 import android.app.ActivityManagerNative; 106 import android.app.ActivityOptions; 107 import android.app.ActivityThread; 108 import android.app.AlertDialog; 109 import android.app.AppGlobals; 110 import android.app.ApplicationErrorReport; 111 import android.app.Dialog; 112 import android.app.IActivityController; 113 import android.app.IApplicationThread; 114 import android.app.IInstrumentationWatcher; 115 import android.app.INotificationManager; 116 import android.app.IProcessObserver; 117 import android.app.IServiceConnection; 118 import android.app.IStopUserCallback; 119 import android.app.IUiAutomationConnection; 120 import android.app.IUserSwitchObserver; 121 import android.app.Instrumentation; 122 import android.app.Notification; 123 import android.app.NotificationManager; 124 import android.app.PendingIntent; 125 import android.app.backup.IBackupManager; 126 import android.content.ActivityNotFoundException; 127 import android.content.BroadcastReceiver; 128 import android.content.ClipData; 129 import android.content.ComponentCallbacks2; 130 import android.content.ComponentName; 131 import android.content.ContentProvider; 132 import android.content.ContentResolver; 133 import android.content.Context; 134 import android.content.DialogInterface; 135 import android.content.IContentProvider; 136 import android.content.IIntentReceiver; 137 import android.content.IIntentSender; 138 import android.content.Intent; 139 import android.content.IntentFilter; 140 import android.content.IntentSender; 141 import android.content.pm.ActivityInfo; 142 import android.content.pm.ApplicationInfo; 143 import android.content.pm.ConfigurationInfo; 144 import android.content.pm.IPackageDataObserver; 145 import android.content.pm.IPackageManager; 146 import android.content.pm.InstrumentationInfo; 147 import android.content.pm.PackageInfo; 148 import android.content.pm.PackageManager; 149 import android.content.pm.ParceledListSlice; 150 import android.content.pm.UserInfo; 151 import android.content.pm.PackageManager.NameNotFoundException; 152 import android.content.pm.PathPermission; 153 import android.content.pm.ProviderInfo; 154 import android.content.pm.ResolveInfo; 155 import android.content.pm.ServiceInfo; 156 import android.content.res.CompatibilityInfo; 157 import android.content.res.Configuration; 158 import android.net.Proxy; 159 import android.net.ProxyInfo; 160 import android.net.Uri; 161 import android.os.Binder; 162 import android.os.Build; 163 import android.os.Bundle; 164 import android.os.Debug; 165 import android.os.DropBoxManager; 166 import android.os.Environment; 167 import android.os.FactoryTest; 168 import android.os.FileObserver; 169 import android.os.FileUtils; 170 import android.os.Handler; 171 import android.os.IBinder; 172 import android.os.IPermissionController; 173 import android.os.IRemoteCallback; 174 import android.os.IUserManager; 175 import android.os.Looper; 176 import android.os.Message; 177 import android.os.Parcel; 178 import android.os.ParcelFileDescriptor; 179 import android.os.PowerManagerInternal; 180 import android.os.Process; 181 import android.os.RemoteCallbackList; 182 import android.os.RemoteException; 183 import android.os.SELinux; 184 import android.os.ServiceManager; 185 import android.os.StrictMode; 186 import android.os.SystemClock; 187 import android.os.SystemProperties; 188 import android.os.UpdateLock; 189 import android.os.UserHandle; 190 import android.os.UserManager; 191 import android.provider.Settings; 192 import android.text.format.DateUtils; 193 import android.text.format.Time; 194 import android.util.AtomicFile; 195 import android.util.EventLog; 196 import android.util.Log; 197 import android.util.Pair; 198 import android.util.PrintWriterPrinter; 199 import android.util.Slog; 200 import android.util.SparseArray; 201 import android.util.TimeUtils; 202 import android.util.Xml; 203 import android.view.Gravity; 204 import android.view.LayoutInflater; 205 import android.view.View; 206 import android.view.WindowManager; 207 208 import dalvik.system.VMRuntime; 209 210 import java.io.BufferedInputStream; 211 import java.io.BufferedOutputStream; 212 import java.io.DataInputStream; 213 import java.io.DataOutputStream; 214 import java.io.File; 215 import java.io.FileDescriptor; 216 import java.io.FileInputStream; 217 import java.io.FileNotFoundException; 218 import java.io.FileOutputStream; 219 import java.io.IOException; 220 import java.io.InputStreamReader; 221 import java.io.PrintWriter; 222 import java.io.StringWriter; 223 import java.lang.ref.WeakReference; 224 import java.util.ArrayList; 225 import java.util.Arrays; 226 import java.util.Collections; 227 import java.util.Comparator; 228 import java.util.HashMap; 229 import java.util.HashSet; 230 import java.util.Iterator; 231 import java.util.List; 232 import java.util.Locale; 233 import java.util.Map; 234 import java.util.Set; 235 import java.util.concurrent.atomic.AtomicBoolean; 236 import java.util.concurrent.atomic.AtomicLong; 237 238 public final class ActivityManagerService extends ActivityManagerNative 239 implements Watchdog.Monitor, BatteryStatsImpl.BatteryCallback { 240 241 private static final String USER_DATA_DIR = "/data/user/"; 242 // File that stores last updated system version and called preboot receivers 243 static final String CALLED_PRE_BOOTS_FILENAME = "called_pre_boots.dat"; 244 245 static final String TAG = "ActivityManager"; 246 static final String TAG_MU = "ActivityManagerServiceMU"; 247 static final boolean DEBUG = false; 248 static final boolean localLOGV = DEBUG; 249 static final boolean DEBUG_BACKUP = localLOGV || false; 250 static final boolean DEBUG_BROADCAST = localLOGV || false; 251 static final boolean DEBUG_BROADCAST_LIGHT = DEBUG_BROADCAST || false; 252 static final boolean DEBUG_BACKGROUND_BROADCAST = DEBUG_BROADCAST || false; 253 static final boolean DEBUG_CLEANUP = localLOGV || false; 254 static final boolean DEBUG_CONFIGURATION = localLOGV || false; 255 static final boolean DEBUG_FOCUS = false; 256 static final boolean DEBUG_IMMERSIVE = localLOGV || false; 257 static final boolean DEBUG_MU = localLOGV || false; 258 static final boolean DEBUG_OOM_ADJ = localLOGV || false; 259 static final boolean DEBUG_LRU = localLOGV || false; 260 static final boolean DEBUG_PAUSE = localLOGV || false; 261 static final boolean DEBUG_POWER = localLOGV || false; 262 static final boolean DEBUG_POWER_QUICK = DEBUG_POWER || false; 263 static final boolean DEBUG_PROCESS_OBSERVERS = localLOGV || false; 264 static final boolean DEBUG_PROCESSES = localLOGV || false; 265 static final boolean DEBUG_PROVIDER = localLOGV || false; 266 static final boolean DEBUG_RESULTS = localLOGV || false; 267 static final boolean DEBUG_SERVICE = localLOGV || false; 268 static final boolean DEBUG_SERVICE_EXECUTING = localLOGV || false; 269 static final boolean DEBUG_STACK = localLOGV || false; 270 static final boolean DEBUG_SWITCH = localLOGV || false; 271 static final boolean DEBUG_TASKS = localLOGV || false; 272 static final boolean DEBUG_THUMBNAILS = localLOGV || false; 273 static final boolean DEBUG_TRANSITION = localLOGV || false; 274 static final boolean DEBUG_URI_PERMISSION = localLOGV || false; 275 static final boolean DEBUG_USER_LEAVING = localLOGV || false; 276 static final boolean DEBUG_VISBILITY = localLOGV || false; 277 static final boolean DEBUG_PSS = localLOGV || false; 278 static final boolean DEBUG_LOCKSCREEN = localLOGV || false; 279 static final boolean DEBUG_RECENTS = localLOGV || false; 280 static final boolean VALIDATE_TOKENS = false; 281 static final boolean SHOW_ACTIVITY_START_TIME = true; 282 283 // Control over CPU and battery monitoring. 284 static final long BATTERY_STATS_TIME = 30*60*1000; // write battery stats every 30 minutes. 285 static final boolean MONITOR_CPU_USAGE = true; 286 static final long MONITOR_CPU_MIN_TIME = 5*1000; // don't sample cpu less than every 5 seconds. 287 static final long MONITOR_CPU_MAX_TIME = 0x0fffffff; // wait possibly forever for next cpu sample. 288 static final boolean MONITOR_THREAD_CPU_USAGE = false; 289 290 // The flags that are set for all calls we make to the package manager. 291 static final int STOCK_PM_FLAGS = PackageManager.GET_SHARED_LIBRARY_FILES; 292 293 private static final String SYSTEM_DEBUGGABLE = "ro.debuggable"; 294 295 static final boolean IS_USER_BUILD = "user".equals(Build.TYPE); 296 297 // Maximum number recent bitmaps to keep in memory. 298 static final int MAX_RECENT_BITMAPS = 3; 299 300 // Amount of time after a call to stopAppSwitches() during which we will 301 // prevent further untrusted switches from happening. 302 static final long APP_SWITCH_DELAY_TIME = 5*1000; 303 304 // How long we wait for a launched process to attach to the activity manager 305 // before we decide it's never going to come up for real. 306 static final int PROC_START_TIMEOUT = 10*1000; 307 308 // How long we wait for a launched process to attach to the activity manager 309 // before we decide it's never going to come up for real, when the process was 310 // started with a wrapper for instrumentation (such as Valgrind) because it 311 // could take much longer than usual. 312 static final int PROC_START_TIMEOUT_WITH_WRAPPER = 1200*1000; 313 314 // How long to wait after going idle before forcing apps to GC. 315 static final int GC_TIMEOUT = 5*1000; 316 317 // The minimum amount of time between successive GC requests for a process. 318 static final int GC_MIN_INTERVAL = 60*1000; 319 320 // The minimum amount of time between successive PSS requests for a process. 321 static final int FULL_PSS_MIN_INTERVAL = 10*60*1000; 322 323 // The minimum amount of time between successive PSS requests for a process 324 // when the request is due to the memory state being lowered. 325 static final int FULL_PSS_LOWERED_INTERVAL = 2*60*1000; 326 327 // The rate at which we check for apps using excessive power -- 15 mins. 328 static final int POWER_CHECK_DELAY = (DEBUG_POWER_QUICK ? 2 : 15) * 60*1000; 329 330 // The minimum sample duration we will allow before deciding we have 331 // enough data on wake locks to start killing things. 332 static final int WAKE_LOCK_MIN_CHECK_DURATION = (DEBUG_POWER_QUICK ? 1 : 5) * 60*1000; 333 334 // The minimum sample duration we will allow before deciding we have 335 // enough data on CPU usage to start killing things. 336 static final int CPU_MIN_CHECK_DURATION = (DEBUG_POWER_QUICK ? 1 : 5) * 60*1000; 337 338 // How long we allow a receiver to run before giving up on it. 339 static final int BROADCAST_FG_TIMEOUT = 10*1000; 340 static final int BROADCAST_BG_TIMEOUT = 60*1000; 341 342 // How long we wait until we timeout on key dispatching. 343 static final int KEY_DISPATCHING_TIMEOUT = 5*1000; 344 345 // How long we wait until we timeout on key dispatching during instrumentation. 346 static final int INSTRUMENTATION_KEY_DISPATCHING_TIMEOUT = 60*1000; 347 348 // Amount of time we wait for observers to handle a user switch before 349 // giving up on them and unfreezing the screen. 350 static final int USER_SWITCH_TIMEOUT = 2*1000; 351 352 // Maximum number of users we allow to be running at a time. 353 static final int MAX_RUNNING_USERS = 3; 354 355 // How long to wait in getAssistContextExtras for the activity and foreground services 356 // to respond with the result. 357 static final int PENDING_ASSIST_EXTRAS_TIMEOUT = 500; 358 359 // Maximum number of persisted Uri grants a package is allowed 360 static final int MAX_PERSISTED_URI_GRANTS = 128; 361 362 static final int MY_PID = Process.myPid(); 363 364 static final String[] EMPTY_STRING_ARRAY = new String[0]; 365 366 // How many bytes to write into the dropbox log before truncating 367 static final int DROPBOX_MAX_SIZE = 256 * 1024; 368 369 // Access modes for handleIncomingUser. 370 static final int ALLOW_NON_FULL = 0; 371 static final int ALLOW_NON_FULL_IN_PROFILE = 1; 372 static final int ALLOW_FULL_ONLY = 2; 373 374 static final int LAST_PREBOOT_DELIVERED_FILE_VERSION = 10000; 375 376 // Delay in notifying task stack change listeners (in millis) 377 static final int NOTIFY_TASK_STACK_CHANGE_LISTENERS_DELAY = 1000; 378 379 /** All system services */ 380 SystemServiceManager mSystemServiceManager; 381 382 private Installer mInstaller; 383 384 /** Run all ActivityStacks through this */ 385 ActivityStackSupervisor mStackSupervisor; 386 387 /** Task stack change listeners. */ 388 private RemoteCallbackList<ITaskStackListener> mTaskStackListeners = 389 new RemoteCallbackList<ITaskStackListener>(); 390 391 public IntentFirewall mIntentFirewall; 392 393 // Whether we should show our dialogs (ANR, crash, etc) or just perform their 394 // default actuion automatically. Important for devices without direct input 395 // devices. 396 private boolean mShowDialogs = true; 397 398 BroadcastQueue mFgBroadcastQueue; 399 BroadcastQueue mBgBroadcastQueue; 400 // Convenient for easy iteration over the queues. Foreground is first 401 // so that dispatch of foreground broadcasts gets precedence. 402 final BroadcastQueue[] mBroadcastQueues = new BroadcastQueue[2]; 403 404 BroadcastQueue broadcastQueueForIntent(Intent intent) { 405 final boolean isFg = (intent.getFlags() & Intent.FLAG_RECEIVER_FOREGROUND) != 0; 406 if (DEBUG_BACKGROUND_BROADCAST) { 407 Slog.i(TAG, "Broadcast intent " + intent + " on " 408 + (isFg ? "foreground" : "background") 409 + " queue"); 410 } 411 return (isFg) ? mFgBroadcastQueue : mBgBroadcastQueue; 412 } 413 414 BroadcastRecord broadcastRecordForReceiverLocked(IBinder receiver) { 415 for (BroadcastQueue queue : mBroadcastQueues) { 416 BroadcastRecord r = queue.getMatchingOrderedReceiver(receiver); 417 if (r != null) { 418 return r; 419 } 420 } 421 return null; 422 } 423 424 /** 425 * Activity we have told the window manager to have key focus. 426 */ 427 ActivityRecord mFocusedActivity = null; 428 429 /** 430 * List of intents that were used to start the most recent tasks. 431 */ 432 ArrayList<TaskRecord> mRecentTasks; 433 ArrayList<TaskRecord> mTmpRecents = new ArrayList<TaskRecord>(); 434 435 /** 436 * For addAppTask: cached of the last activity component that was added. 437 */ 438 ComponentName mLastAddedTaskComponent; 439 440 /** 441 * For addAppTask: cached of the last activity uid that was added. 442 */ 443 int mLastAddedTaskUid; 444 445 /** 446 * For addAppTask: cached of the last ActivityInfo that was added. 447 */ 448 ActivityInfo mLastAddedTaskActivity; 449 450 public class PendingAssistExtras extends Binder implements Runnable { 451 public final ActivityRecord activity; 452 public final Bundle extras; 453 public final Intent intent; 454 public final String hint; 455 public final int userHandle; 456 public boolean haveResult = false; 457 public Bundle result = null; 458 public PendingAssistExtras(ActivityRecord _activity, Bundle _extras, Intent _intent, 459 String _hint, int _userHandle) { 460 activity = _activity; 461 extras = _extras; 462 intent = _intent; 463 hint = _hint; 464 userHandle = _userHandle; 465 } 466 @Override 467 public void run() { 468 Slog.w(TAG, "getAssistContextExtras failed: timeout retrieving from " + activity); 469 synchronized (this) { 470 haveResult = true; 471 notifyAll(); 472 } 473 } 474 } 475 476 final ArrayList<PendingAssistExtras> mPendingAssistExtras 477 = new ArrayList<PendingAssistExtras>(); 478 479 /** 480 * Process management. 481 */ 482 final ProcessList mProcessList = new ProcessList(); 483 484 /** 485 * All of the applications we currently have running organized by name. 486 * The keys are strings of the application package name (as 487 * returned by the package manager), and the keys are ApplicationRecord 488 * objects. 489 */ 490 final ProcessMap<ProcessRecord> mProcessNames = new ProcessMap<ProcessRecord>(); 491 492 /** 493 * Tracking long-term execution of processes to look for abuse and other 494 * bad app behavior. 495 */ 496 final ProcessStatsService mProcessStats; 497 498 /** 499 * The currently running isolated processes. 500 */ 501 final SparseArray<ProcessRecord> mIsolatedProcesses = new SparseArray<ProcessRecord>(); 502 503 /** 504 * Counter for assigning isolated process uids, to avoid frequently reusing the 505 * same ones. 506 */ 507 int mNextIsolatedProcessUid = 0; 508 509 /** 510 * The currently running heavy-weight process, if any. 511 */ 512 ProcessRecord mHeavyWeightProcess = null; 513 514 /** 515 * The last time that various processes have crashed. 516 */ 517 final ProcessMap<Long> mProcessCrashTimes = new ProcessMap<Long>(); 518 519 /** 520 * Information about a process that is currently marked as bad. 521 */ 522 static final class BadProcessInfo { 523 BadProcessInfo(long time, String shortMsg, String longMsg, String stack) { 524 this.time = time; 525 this.shortMsg = shortMsg; 526 this.longMsg = longMsg; 527 this.stack = stack; 528 } 529 530 final long time; 531 final String shortMsg; 532 final String longMsg; 533 final String stack; 534 } 535 536 /** 537 * Set of applications that we consider to be bad, and will reject 538 * incoming broadcasts from (which the user has no control over). 539 * Processes are added to this set when they have crashed twice within 540 * a minimum amount of time; they are removed from it when they are 541 * later restarted (hopefully due to some user action). The value is the 542 * time it was added to the list. 543 */ 544 final ProcessMap<BadProcessInfo> mBadProcesses = new ProcessMap<BadProcessInfo>(); 545 546 /** 547 * All of the processes we currently have running organized by pid. 548 * The keys are the pid running the application. 549 * 550 * <p>NOTE: This object is protected by its own lock, NOT the global 551 * activity manager lock! 552 */ 553 final SparseArray<ProcessRecord> mPidsSelfLocked = new SparseArray<ProcessRecord>(); 554 555 /** 556 * All of the processes that have been forced to be foreground. The key 557 * is the pid of the caller who requested it (we hold a death 558 * link on it). 559 */ 560 abstract class ForegroundToken implements IBinder.DeathRecipient { 561 int pid; 562 IBinder token; 563 } 564 final SparseArray<ForegroundToken> mForegroundProcesses = new SparseArray<ForegroundToken>(); 565 566 /** 567 * List of records for processes that someone had tried to start before the 568 * system was ready. We don't start them at that point, but ensure they 569 * are started by the time booting is complete. 570 */ 571 final ArrayList<ProcessRecord> mProcessesOnHold = new ArrayList<ProcessRecord>(); 572 573 /** 574 * List of persistent applications that are in the process 575 * of being started. 576 */ 577 final ArrayList<ProcessRecord> mPersistentStartingProcesses = new ArrayList<ProcessRecord>(); 578 579 /** 580 * Processes that are being forcibly torn down. 581 */ 582 final ArrayList<ProcessRecord> mRemovedProcesses = new ArrayList<ProcessRecord>(); 583 584 /** 585 * List of running applications, sorted by recent usage. 586 * The first entry in the list is the least recently used. 587 */ 588 final ArrayList<ProcessRecord> mLruProcesses = new ArrayList<ProcessRecord>(); 589 590 /** 591 * Where in mLruProcesses that the processes hosting activities start. 592 */ 593 int mLruProcessActivityStart = 0; 594 595 /** 596 * Where in mLruProcesses that the processes hosting services start. 597 * This is after (lower index) than mLruProcessesActivityStart. 598 */ 599 int mLruProcessServiceStart = 0; 600 601 /** 602 * List of processes that should gc as soon as things are idle. 603 */ 604 final ArrayList<ProcessRecord> mProcessesToGc = new ArrayList<ProcessRecord>(); 605 606 /** 607 * Processes we want to collect PSS data from. 608 */ 609 final ArrayList<ProcessRecord> mPendingPssProcesses = new ArrayList<ProcessRecord>(); 610 611 /** 612 * Last time we requested PSS data of all processes. 613 */ 614 long mLastFullPssTime = SystemClock.uptimeMillis(); 615 616 /** 617 * If set, the next time we collect PSS data we should do a full collection 618 * with data from native processes and the kernel. 619 */ 620 boolean mFullPssPending = false; 621 622 /** 623 * This is the process holding what we currently consider to be 624 * the "home" activity. 625 */ 626 ProcessRecord mHomeProcess; 627 628 /** 629 * This is the process holding the activity the user last visited that 630 * is in a different process from the one they are currently in. 631 */ 632 ProcessRecord mPreviousProcess; 633 634 /** 635 * The time at which the previous process was last visible. 636 */ 637 long mPreviousProcessVisibleTime; 638 639 /** 640 * Which uses have been started, so are allowed to run code. 641 */ 642 final SparseArray<UserStartedState> mStartedUsers = new SparseArray<UserStartedState>(); 643 644 /** 645 * LRU list of history of current users. Most recently current is at the end. 646 */ 647 final ArrayList<Integer> mUserLru = new ArrayList<Integer>(); 648 649 /** 650 * Constant array of the users that are currently started. 651 */ 652 int[] mStartedUserArray = new int[] { 0 }; 653 654 /** 655 * Registered observers of the user switching mechanics. 656 */ 657 final RemoteCallbackList<IUserSwitchObserver> mUserSwitchObservers 658 = new RemoteCallbackList<IUserSwitchObserver>(); 659 660 /** 661 * Currently active user switch. 662 */ 663 Object mCurUserSwitchCallback; 664 665 /** 666 * Packages that the user has asked to have run in screen size 667 * compatibility mode instead of filling the screen. 668 */ 669 final CompatModePackages mCompatModePackages; 670 671 /** 672 * Set of IntentSenderRecord objects that are currently active. 673 */ 674 final HashMap<PendingIntentRecord.Key, WeakReference<PendingIntentRecord>> mIntentSenderRecords 675 = new HashMap<PendingIntentRecord.Key, WeakReference<PendingIntentRecord>>(); 676 677 /** 678 * Fingerprints (hashCode()) of stack traces that we've 679 * already logged DropBox entries for. Guarded by itself. If 680 * something (rogue user app) forces this over 681 * MAX_DUP_SUPPRESSED_STACKS entries, the contents are cleared. 682 */ 683 private final HashSet<Integer> mAlreadyLoggedViolatedStacks = new HashSet<Integer>(); 684 private static final int MAX_DUP_SUPPRESSED_STACKS = 5000; 685 686 /** 687 * Strict Mode background batched logging state. 688 * 689 * The string buffer is guarded by itself, and its lock is also 690 * used to determine if another batched write is already 691 * in-flight. 692 */ 693 private final StringBuilder mStrictModeBuffer = new StringBuilder(); 694 695 /** 696 * Keeps track of all IIntentReceivers that have been registered for 697 * broadcasts. Hash keys are the receiver IBinder, hash value is 698 * a ReceiverList. 699 */ 700 final HashMap<IBinder, ReceiverList> mRegisteredReceivers = 701 new HashMap<IBinder, ReceiverList>(); 702 703 /** 704 * Resolver for broadcast intents to registered receivers. 705 * Holds BroadcastFilter (subclass of IntentFilter). 706 */ 707 final IntentResolver<BroadcastFilter, BroadcastFilter> mReceiverResolver 708 = new IntentResolver<BroadcastFilter, BroadcastFilter>() { 709 @Override 710 protected boolean allowFilterResult( 711 BroadcastFilter filter, List<BroadcastFilter> dest) { 712 IBinder target = filter.receiverList.receiver.asBinder(); 713 for (int i=dest.size()-1; i>=0; i--) { 714 if (dest.get(i).receiverList.receiver.asBinder() == target) { 715 return false; 716 } 717 } 718 return true; 719 } 720 721 @Override 722 protected BroadcastFilter newResult(BroadcastFilter filter, int match, int userId) { 723 if (userId == UserHandle.USER_ALL || filter.owningUserId == UserHandle.USER_ALL 724 || userId == filter.owningUserId) { 725 return super.newResult(filter, match, userId); 726 } 727 return null; 728 } 729 730 @Override 731 protected BroadcastFilter[] newArray(int size) { 732 return new BroadcastFilter[size]; 733 } 734 735 @Override 736 protected boolean isPackageForFilter(String packageName, BroadcastFilter filter) { 737 return packageName.equals(filter.packageName); 738 } 739 }; 740 741 /** 742 * State of all active sticky broadcasts per user. Keys are the action of the 743 * sticky Intent, values are an ArrayList of all broadcasted intents with 744 * that action (which should usually be one). The SparseArray is keyed 745 * by the user ID the sticky is for, and can include UserHandle.USER_ALL 746 * for stickies that are sent to all users. 747 */ 748 final SparseArray<ArrayMap<String, ArrayList<Intent>>> mStickyBroadcasts = 749 new SparseArray<ArrayMap<String, ArrayList<Intent>>>(); 750 751 final ActiveServices mServices; 752 753 final static class Association { 754 final int mSourceUid; 755 final String mSourceProcess; 756 final int mTargetUid; 757 final ComponentName mTargetComponent; 758 final String mTargetProcess; 759 760 int mCount; 761 long mTime; 762 763 int mNesting; 764 long mStartTime; 765 766 Association(int sourceUid, String sourceProcess, int targetUid, 767 ComponentName targetComponent, String targetProcess) { 768 mSourceUid = sourceUid; 769 mSourceProcess = sourceProcess; 770 mTargetUid = targetUid; 771 mTargetComponent = targetComponent; 772 mTargetProcess = targetProcess; 773 } 774 } 775 776 /** 777 * When service association tracking is enabled, this is all of the associations we 778 * have seen. Mapping is target uid -> target component -> source uid -> source process name 779 * -> association data. 780 */ 781 final SparseArray<ArrayMap<ComponentName, SparseArray<ArrayMap<String, Association>>>> 782 mAssociations = new SparseArray<>(); 783 boolean mTrackingAssociations; 784 785 /** 786 * Backup/restore process management 787 */ 788 String mBackupAppName = null; 789 BackupRecord mBackupTarget = null; 790 791 final ProviderMap mProviderMap; 792 793 /** 794 * List of content providers who have clients waiting for them. The 795 * application is currently being launched and the provider will be 796 * removed from this list once it is published. 797 */ 798 final ArrayList<ContentProviderRecord> mLaunchingProviders 799 = new ArrayList<ContentProviderRecord>(); 800 801 /** 802 * File storing persisted {@link #mGrantedUriPermissions}. 803 */ 804 private final AtomicFile mGrantFile; 805 806 /** XML constants used in {@link #mGrantFile} */ 807 private static final String TAG_URI_GRANTS = "uri-grants"; 808 private static final String TAG_URI_GRANT = "uri-grant"; 809 private static final String ATTR_USER_HANDLE = "userHandle"; 810 private static final String ATTR_SOURCE_USER_ID = "sourceUserId"; 811 private static final String ATTR_TARGET_USER_ID = "targetUserId"; 812 private static final String ATTR_SOURCE_PKG = "sourcePkg"; 813 private static final String ATTR_TARGET_PKG = "targetPkg"; 814 private static final String ATTR_URI = "uri"; 815 private static final String ATTR_MODE_FLAGS = "modeFlags"; 816 private static final String ATTR_CREATED_TIME = "createdTime"; 817 private static final String ATTR_PREFIX = "prefix"; 818 819 /** 820 * Global set of specific {@link Uri} permissions that have been granted. 821 * This optimized lookup structure maps from {@link UriPermission#targetUid} 822 * to {@link UriPermission#uri} to {@link UriPermission}. 823 */ 824 @GuardedBy("this") 825 private final SparseArray<ArrayMap<GrantUri, UriPermission>> 826 mGrantedUriPermissions = new SparseArray<ArrayMap<GrantUri, UriPermission>>(); 827 828 public static class GrantUri { 829 public final int sourceUserId; 830 public final Uri uri; 831 public boolean prefix; 832 833 public GrantUri(int sourceUserId, Uri uri, boolean prefix) { 834 this.sourceUserId = sourceUserId; 835 this.uri = uri; 836 this.prefix = prefix; 837 } 838 839 @Override 840 public int hashCode() { 841 int hashCode = 1; 842 hashCode = 31 * hashCode + sourceUserId; 843 hashCode = 31 * hashCode + uri.hashCode(); 844 hashCode = 31 * hashCode + (prefix ? 1231 : 1237); 845 return hashCode; 846 } 847 848 @Override 849 public boolean equals(Object o) { 850 if (o instanceof GrantUri) { 851 GrantUri other = (GrantUri) o; 852 return uri.equals(other.uri) && (sourceUserId == other.sourceUserId) 853 && prefix == other.prefix; 854 } 855 return false; 856 } 857 858 @Override 859 public String toString() { 860 String result = Integer.toString(sourceUserId) + " @ " + uri.toString(); 861 if (prefix) result += " [prefix]"; 862 return result; 863 } 864 865 public String toSafeString() { 866 String result = Integer.toString(sourceUserId) + " @ " + uri.toSafeString(); 867 if (prefix) result += " [prefix]"; 868 return result; 869 } 870 871 public static GrantUri resolve(int defaultSourceUserHandle, Uri uri) { 872 return new GrantUri(ContentProvider.getUserIdFromUri(uri, defaultSourceUserHandle), 873 ContentProvider.getUriWithoutUserId(uri), false); 874 } 875 } 876 877 CoreSettingsObserver mCoreSettingsObserver; 878 879 /** 880 * Thread-local storage used to carry caller permissions over through 881 * indirect content-provider access. 882 */ 883 private class Identity { 884 public final IBinder token; 885 public final int pid; 886 public final int uid; 887 888 Identity(IBinder _token, int _pid, int _uid) { 889 token = _token; 890 pid = _pid; 891 uid = _uid; 892 } 893 } 894 895 private static final ThreadLocal<Identity> sCallerIdentity = new ThreadLocal<Identity>(); 896 897 /** 898 * All information we have collected about the runtime performance of 899 * any user id that can impact battery performance. 900 */ 901 final BatteryStatsService mBatteryStatsService; 902 903 /** 904 * Information about component usage 905 */ 906 UsageStatsManagerInternal mUsageStatsService; 907 908 /** 909 * Information about and control over application operations 910 */ 911 final AppOpsService mAppOpsService; 912 913 /** 914 * Save recent tasks information across reboots. 915 */ 916 final TaskPersister mTaskPersister; 917 918 /** 919 * Current configuration information. HistoryRecord objects are given 920 * a reference to this object to indicate which configuration they are 921 * currently running in, so this object must be kept immutable. 922 */ 923 Configuration mConfiguration = new Configuration(); 924 925 /** 926 * Current sequencing integer of the configuration, for skipping old 927 * configurations. 928 */ 929 int mConfigurationSeq = 0; 930 931 /** 932 * Hardware-reported OpenGLES version. 933 */ 934 final int GL_ES_VERSION; 935 936 /** 937 * List of initialization arguments to pass to all processes when binding applications to them. 938 * For example, references to the commonly used services. 939 */ 940 HashMap<String, IBinder> mAppBindArgs; 941 942 /** 943 * Temporary to avoid allocations. Protected by main lock. 944 */ 945 final StringBuilder mStringBuilder = new StringBuilder(256); 946 947 /** 948 * Used to control how we initialize the service. 949 */ 950 ComponentName mTopComponent; 951 String mTopAction = Intent.ACTION_MAIN; 952 String mTopData; 953 boolean mProcessesReady = false; 954 boolean mSystemReady = false; 955 boolean mBooting = false; 956 boolean mCallFinishBooting = false; 957 boolean mBootAnimationComplete = false; 958 boolean mWaitingUpdate = false; 959 boolean mDidUpdate = false; 960 boolean mOnBattery = false; 961 boolean mLaunchWarningShown = false; 962 963 Context mContext; 964 965 int mFactoryTest; 966 967 boolean mCheckedForSetup; 968 969 /** 970 * The time at which we will allow normal application switches again, 971 * after a call to {@link #stopAppSwitches()}. 972 */ 973 long mAppSwitchesAllowedTime; 974 975 /** 976 * This is set to true after the first switch after mAppSwitchesAllowedTime 977 * is set; any switches after that will clear the time. 978 */ 979 boolean mDidAppSwitch; 980 981 /** 982 * Last time (in realtime) at which we checked for power usage. 983 */ 984 long mLastPowerCheckRealtime; 985 986 /** 987 * Last time (in uptime) at which we checked for power usage. 988 */ 989 long mLastPowerCheckUptime; 990 991 /** 992 * Set while we are wanting to sleep, to prevent any 993 * activities from being started/resumed. 994 */ 995 private boolean mSleeping = false; 996 997 /** 998 * Set while we are running a voice interaction. This overrides 999 * sleeping while it is active. 1000 */ 1001 private boolean mRunningVoice = false; 1002 1003 /** 1004 * State of external calls telling us if the device is awake or asleep. 1005 */ 1006 private int mWakefulness = PowerManagerInternal.WAKEFULNESS_AWAKE; 1007 1008 static final int LOCK_SCREEN_HIDDEN = 0; 1009 static final int LOCK_SCREEN_LEAVING = 1; 1010 static final int LOCK_SCREEN_SHOWN = 2; 1011 /** 1012 * State of external call telling us if the lock screen is shown. 1013 */ 1014 int mLockScreenShown = LOCK_SCREEN_HIDDEN; 1015 1016 /** 1017 * Set if we are shutting down the system, similar to sleeping. 1018 */ 1019 boolean mShuttingDown = false; 1020 1021 /** 1022 * Current sequence id for oom_adj computation traversal. 1023 */ 1024 int mAdjSeq = 0; 1025 1026 /** 1027 * Current sequence id for process LRU updating. 1028 */ 1029 int mLruSeq = 0; 1030 1031 /** 1032 * Keep track of the non-cached/empty process we last found, to help 1033 * determine how to distribute cached/empty processes next time. 1034 */ 1035 int mNumNonCachedProcs = 0; 1036 1037 /** 1038 * Keep track of the number of cached hidden procs, to balance oom adj 1039 * distribution between those and empty procs. 1040 */ 1041 int mNumCachedHiddenProcs = 0; 1042 1043 /** 1044 * Keep track of the number of service processes we last found, to 1045 * determine on the next iteration which should be B services. 1046 */ 1047 int mNumServiceProcs = 0; 1048 int mNewNumAServiceProcs = 0; 1049 int mNewNumServiceProcs = 0; 1050 1051 /** 1052 * Allow the current computed overall memory level of the system to go down? 1053 * This is set to false when we are killing processes for reasons other than 1054 * memory management, so that the now smaller process list will not be taken as 1055 * an indication that memory is tighter. 1056 */ 1057 boolean mAllowLowerMemLevel = false; 1058 1059 /** 1060 * The last computed memory level, for holding when we are in a state that 1061 * processes are going away for other reasons. 1062 */ 1063 int mLastMemoryLevel = ProcessStats.ADJ_MEM_FACTOR_NORMAL; 1064 1065 /** 1066 * The last total number of process we have, to determine if changes actually look 1067 * like a shrinking number of process due to lower RAM. 1068 */ 1069 int mLastNumProcesses; 1070 1071 /** 1072 * The uptime of the last time we performed idle maintenance. 1073 */ 1074 long mLastIdleTime = SystemClock.uptimeMillis(); 1075 1076 /** 1077 * Total time spent with RAM that has been added in the past since the last idle time. 1078 */ 1079 long mLowRamTimeSinceLastIdle = 0; 1080 1081 /** 1082 * If RAM is currently low, when that horrible situation started. 1083 */ 1084 long mLowRamStartTime = 0; 1085 1086 /** 1087 * For reporting to battery stats the current top application. 1088 */ 1089 private String mCurResumedPackage = null; 1090 private int mCurResumedUid = -1; 1091 1092 /** 1093 * For reporting to battery stats the apps currently running foreground 1094 * service. The ProcessMap is package/uid tuples; each of these contain 1095 * an array of the currently foreground processes. 1096 */ 1097 final ProcessMap<ArrayList<ProcessRecord>> mForegroundPackages 1098 = new ProcessMap<ArrayList<ProcessRecord>>(); 1099 1100 /** 1101 * This is set if we had to do a delayed dexopt of an app before launching 1102 * it, to increase the ANR timeouts in that case. 1103 */ 1104 boolean mDidDexOpt; 1105 1106 /** 1107 * Set if the systemServer made a call to enterSafeMode. 1108 */ 1109 boolean mSafeMode; 1110 1111 /** 1112 * If true, we are running under a test environment so will sample PSS from processes 1113 * much more rapidly to try to collect better data when the tests are rapidly 1114 * running through apps. 1115 */ 1116 boolean mTestPssMode = false; 1117 1118 String mDebugApp = null; 1119 boolean mWaitForDebugger = false; 1120 boolean mDebugTransient = false; 1121 String mOrigDebugApp = null; 1122 boolean mOrigWaitForDebugger = false; 1123 boolean mAlwaysFinishActivities = false; 1124 IActivityController mController = null; 1125 String mProfileApp = null; 1126 ProcessRecord mProfileProc = null; 1127 String mProfileFile; 1128 ParcelFileDescriptor mProfileFd; 1129 int mSamplingInterval = 0; 1130 boolean mAutoStopProfiler = false; 1131 int mProfileType = 0; 1132 String mOpenGlTraceApp = null; 1133 1134 final long[] mTmpLong = new long[1]; 1135 1136 static class ProcessChangeItem { 1137 static final int CHANGE_ACTIVITIES = 1<<0; 1138 static final int CHANGE_PROCESS_STATE = 1<<1; 1139 int changes; 1140 int uid; 1141 int pid; 1142 int processState; 1143 boolean foregroundActivities; 1144 } 1145 1146 final RemoteCallbackList<IProcessObserver> mProcessObservers 1147 = new RemoteCallbackList<IProcessObserver>(); 1148 ProcessChangeItem[] mActiveProcessChanges = new ProcessChangeItem[5]; 1149 1150 final ArrayList<ProcessChangeItem> mPendingProcessChanges 1151 = new ArrayList<ProcessChangeItem>(); 1152 final ArrayList<ProcessChangeItem> mAvailProcessChanges 1153 = new ArrayList<ProcessChangeItem>(); 1154 1155 /** 1156 * Runtime CPU use collection thread. This object's lock is used to 1157 * perform synchronization with the thread (notifying it to run). 1158 */ 1159 final Thread mProcessCpuThread; 1160 1161 /** 1162 * Used to collect per-process CPU use for ANRs, battery stats, etc. 1163 * Must acquire this object's lock when accessing it. 1164 * NOTE: this lock will be held while doing long operations (trawling 1165 * through all processes in /proc), so it should never be acquired by 1166 * any critical paths such as when holding the main activity manager lock. 1167 */ 1168 final ProcessCpuTracker mProcessCpuTracker = new ProcessCpuTracker( 1169 MONITOR_THREAD_CPU_USAGE); 1170 final AtomicLong mLastCpuTime = new AtomicLong(0); 1171 final AtomicBoolean mProcessCpuMutexFree = new AtomicBoolean(true); 1172 1173 long mLastWriteTime = 0; 1174 1175 /** 1176 * Used to retain an update lock when the foreground activity is in 1177 * immersive mode. 1178 */ 1179 final UpdateLock mUpdateLock = new UpdateLock("immersive"); 1180 1181 /** 1182 * Set to true after the system has finished booting. 1183 */ 1184 boolean mBooted = false; 1185 1186 int mProcessLimit = ProcessList.MAX_CACHED_APPS; 1187 int mProcessLimitOverride = -1; 1188 1189 WindowManagerService mWindowManager; 1190 1191 final ActivityThread mSystemThread; 1192 1193 // Holds the current foreground user's id 1194 int mCurrentUserId = 0; 1195 // Holds the target user's id during a user switch 1196 int mTargetUserId = UserHandle.USER_NULL; 1197 // If there are multiple profiles for the current user, their ids are here 1198 // Currently only the primary user can have managed profiles 1199 int[] mCurrentProfileIds = new int[] {UserHandle.USER_OWNER}; // Accessed by ActivityStack 1200 1201 /** 1202 * Mapping from each known user ID to the profile group ID it is associated with. 1203 */ 1204 SparseIntArray mUserProfileGroupIdsSelfLocked = new SparseIntArray(); 1205 1206 private UserManagerService mUserManager; 1207 1208 private final class AppDeathRecipient implements IBinder.DeathRecipient { 1209 final ProcessRecord mApp; 1210 final int mPid; 1211 final IApplicationThread mAppThread; 1212 1213 AppDeathRecipient(ProcessRecord app, int pid, 1214 IApplicationThread thread) { 1215 if (localLOGV) Slog.v( 1216 TAG, "New death recipient " + this 1217 + " for thread " + thread.asBinder()); 1218 mApp = app; 1219 mPid = pid; 1220 mAppThread = thread; 1221 } 1222 1223 @Override 1224 public void binderDied() { 1225 if (localLOGV) Slog.v( 1226 TAG, "Death received in " + this 1227 + " for thread " + mAppThread.asBinder()); 1228 synchronized(ActivityManagerService.this) { 1229 appDiedLocked(mApp, mPid, mAppThread); 1230 } 1231 } 1232 } 1233 1234 static final int SHOW_ERROR_MSG = 1; 1235 static final int SHOW_NOT_RESPONDING_MSG = 2; 1236 static final int SHOW_FACTORY_ERROR_MSG = 3; 1237 static final int UPDATE_CONFIGURATION_MSG = 4; 1238 static final int GC_BACKGROUND_PROCESSES_MSG = 5; 1239 static final int WAIT_FOR_DEBUGGER_MSG = 6; 1240 static final int SERVICE_TIMEOUT_MSG = 12; 1241 static final int UPDATE_TIME_ZONE = 13; 1242 static final int SHOW_UID_ERROR_MSG = 14; 1243 static final int SHOW_FINGERPRINT_ERROR_MSG = 15; 1244 static final int PROC_START_TIMEOUT_MSG = 20; 1245 static final int DO_PENDING_ACTIVITY_LAUNCHES_MSG = 21; 1246 static final int KILL_APPLICATION_MSG = 22; 1247 static final int FINALIZE_PENDING_INTENT_MSG = 23; 1248 static final int POST_HEAVY_NOTIFICATION_MSG = 24; 1249 static final int CANCEL_HEAVY_NOTIFICATION_MSG = 25; 1250 static final int SHOW_STRICT_MODE_VIOLATION_MSG = 26; 1251 static final int CHECK_EXCESSIVE_WAKE_LOCKS_MSG = 27; 1252 static final int CLEAR_DNS_CACHE_MSG = 28; 1253 static final int UPDATE_HTTP_PROXY_MSG = 29; 1254 static final int SHOW_COMPAT_MODE_DIALOG_MSG = 30; 1255 static final int DISPATCH_PROCESSES_CHANGED = 31; 1256 static final int DISPATCH_PROCESS_DIED = 32; 1257 static final int REPORT_MEM_USAGE_MSG = 33; 1258 static final int REPORT_USER_SWITCH_MSG = 34; 1259 static final int CONTINUE_USER_SWITCH_MSG = 35; 1260 static final int USER_SWITCH_TIMEOUT_MSG = 36; 1261 static final int IMMERSIVE_MODE_LOCK_MSG = 37; 1262 static final int PERSIST_URI_GRANTS_MSG = 38; 1263 static final int REQUEST_ALL_PSS_MSG = 39; 1264 static final int START_PROFILES_MSG = 40; 1265 static final int UPDATE_TIME = 41; 1266 static final int SYSTEM_USER_START_MSG = 42; 1267 static final int SYSTEM_USER_CURRENT_MSG = 43; 1268 static final int ENTER_ANIMATION_COMPLETE_MSG = 44; 1269 static final int FINISH_BOOTING_MSG = 45; 1270 static final int START_USER_SWITCH_MSG = 46; 1271 static final int SEND_LOCALE_TO_MOUNT_DAEMON_MSG = 47; 1272 static final int DISMISS_DIALOG_MSG = 48; 1273 static final int NOTIFY_TASK_STACK_CHANGE_LISTENERS_MSG = 49; 1274 1275 static final int FIRST_ACTIVITY_STACK_MSG = 100; 1276 static final int FIRST_BROADCAST_QUEUE_MSG = 200; 1277 static final int FIRST_COMPAT_MODE_MSG = 300; 1278 static final int FIRST_SUPERVISOR_STACK_MSG = 100; 1279 1280 CompatModeDialog mCompatModeDialog; 1281 long mLastMemUsageReportTime = 0; 1282 1283 /** 1284 * Flag whether the current user is a "monkey", i.e. whether 1285 * the UI is driven by a UI automation tool. 1286 */ 1287 private boolean mUserIsMonkey; 1288 1289 /** Flag whether the device has a Recents UI */ 1290 boolean mHasRecents; 1291 1292 /** The dimensions of the thumbnails in the Recents UI. */ 1293 int mThumbnailWidth; 1294 int mThumbnailHeight; 1295 1296 final ServiceThread mHandlerThread; 1297 final MainHandler mHandler; 1298 1299 final class MainHandler extends Handler { 1300 public MainHandler(Looper looper) { 1301 super(looper, null, true); 1302 } 1303 1304 @Override 1305 public void handleMessage(Message msg) { 1306 switch (msg.what) { 1307 case SHOW_ERROR_MSG: { 1308 HashMap<String, Object> data = (HashMap<String, Object>) msg.obj; 1309 boolean showBackground = Settings.Secure.getInt(mContext.getContentResolver(), 1310 Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0; 1311 synchronized (ActivityManagerService.this) { 1312 ProcessRecord proc = (ProcessRecord)data.get("app"); 1313 AppErrorResult res = (AppErrorResult) data.get("result"); 1314 if (proc != null && proc.crashDialog != null) { 1315 Slog.e(TAG, "App already has crash dialog: " + proc); 1316 if (res != null) { 1317 res.set(0); 1318 } 1319 return; 1320 } 1321 boolean isBackground = (UserHandle.getAppId(proc.uid) 1322 >= Process.FIRST_APPLICATION_UID 1323 && proc.pid != MY_PID); 1324 for (int userId : mCurrentProfileIds) { 1325 isBackground &= (proc.userId != userId); 1326 } 1327 if (isBackground && !showBackground) { 1328 Slog.w(TAG, "Skipping crash dialog of " + proc + ": background"); 1329 if (res != null) { 1330 res.set(0); 1331 } 1332 return; 1333 } 1334 if (mShowDialogs && !mSleeping && !mShuttingDown) { 1335 Dialog d = new AppErrorDialog(mContext, 1336 ActivityManagerService.this, res, proc); 1337 d.show(); 1338 proc.crashDialog = d; 1339 } else { 1340 // The device is asleep, so just pretend that the user 1341 // saw a crash dialog and hit "force quit". 1342 if (res != null) { 1343 res.set(0); 1344 } 1345 } 1346 } 1347 1348 ensureBootCompleted(); 1349 } break; 1350 case SHOW_NOT_RESPONDING_MSG: { 1351 synchronized (ActivityManagerService.this) { 1352 HashMap<String, Object> data = (HashMap<String, Object>) msg.obj; 1353 ProcessRecord proc = (ProcessRecord)data.get("app"); 1354 if (proc != null && proc.anrDialog != null) { 1355 Slog.e(TAG, "App already has anr dialog: " + proc); 1356 return; 1357 } 1358 1359 Intent intent = new Intent("android.intent.action.ANR"); 1360 if (!mProcessesReady) { 1361 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY 1362 | Intent.FLAG_RECEIVER_FOREGROUND); 1363 } 1364 broadcastIntentLocked(null, null, intent, 1365 null, null, 0, null, null, null, AppOpsManager.OP_NONE, 1366 false, false, MY_PID, Process.SYSTEM_UID, 0 /* TODO: Verify */); 1367 1368 if (mShowDialogs) { 1369 Dialog d = new AppNotRespondingDialog(ActivityManagerService.this, 1370 mContext, proc, (ActivityRecord)data.get("activity"), 1371 msg.arg1 != 0); 1372 d.show(); 1373 proc.anrDialog = d; 1374 } else { 1375 // Just kill the app if there is no dialog to be shown. 1376 killAppAtUsersRequest(proc, null); 1377 } 1378 } 1379 1380 ensureBootCompleted(); 1381 } break; 1382 case SHOW_STRICT_MODE_VIOLATION_MSG: { 1383 HashMap<String, Object> data = (HashMap<String, Object>) msg.obj; 1384 synchronized (ActivityManagerService.this) { 1385 ProcessRecord proc = (ProcessRecord) data.get("app"); 1386 if (proc == null) { 1387 Slog.e(TAG, "App not found when showing strict mode dialog."); 1388 break; 1389 } 1390 if (proc.crashDialog != null) { 1391 Slog.e(TAG, "App already has strict mode dialog: " + proc); 1392 return; 1393 } 1394 AppErrorResult res = (AppErrorResult) data.get("result"); 1395 if (mShowDialogs && !mSleeping && !mShuttingDown) { 1396 Dialog d = new StrictModeViolationDialog(mContext, 1397 ActivityManagerService.this, res, proc); 1398 d.show(); 1399 proc.crashDialog = d; 1400 } else { 1401 // The device is asleep, so just pretend that the user 1402 // saw a crash dialog and hit "force quit". 1403 res.set(0); 1404 } 1405 } 1406 ensureBootCompleted(); 1407 } break; 1408 case SHOW_FACTORY_ERROR_MSG: { 1409 Dialog d = new FactoryErrorDialog( 1410 mContext, msg.getData().getCharSequence("msg")); 1411 d.show(); 1412 ensureBootCompleted(); 1413 } break; 1414 case UPDATE_CONFIGURATION_MSG: { 1415 final ContentResolver resolver = mContext.getContentResolver(); 1416 Settings.System.putConfiguration(resolver, (Configuration)msg.obj); 1417 } break; 1418 case GC_BACKGROUND_PROCESSES_MSG: { 1419 synchronized (ActivityManagerService.this) { 1420 performAppGcsIfAppropriateLocked(); 1421 } 1422 } break; 1423 case WAIT_FOR_DEBUGGER_MSG: { 1424 synchronized (ActivityManagerService.this) { 1425 ProcessRecord app = (ProcessRecord)msg.obj; 1426 if (msg.arg1 != 0) { 1427 if (!app.waitedForDebugger) { 1428 Dialog d = new AppWaitingForDebuggerDialog( 1429 ActivityManagerService.this, 1430 mContext, app); 1431 app.waitDialog = d; 1432 app.waitedForDebugger = true; 1433 d.show(); 1434 } 1435 } else { 1436 if (app.waitDialog != null) { 1437 app.waitDialog.dismiss(); 1438 app.waitDialog = null; 1439 } 1440 } 1441 } 1442 } break; 1443 case SERVICE_TIMEOUT_MSG: { 1444 if (mDidDexOpt) { 1445 mDidDexOpt = false; 1446 Message nmsg = mHandler.obtainMessage(SERVICE_TIMEOUT_MSG); 1447 nmsg.obj = msg.obj; 1448 mHandler.sendMessageDelayed(nmsg, ActiveServices.SERVICE_TIMEOUT); 1449 return; 1450 } 1451 mServices.serviceTimeout((ProcessRecord)msg.obj); 1452 } break; 1453 case UPDATE_TIME_ZONE: { 1454 synchronized (ActivityManagerService.this) { 1455 for (int i = mLruProcesses.size() - 1 ; i >= 0 ; i--) { 1456 ProcessRecord r = mLruProcesses.get(i); 1457 if (r.thread != null) { 1458 try { 1459 r.thread.updateTimeZone(); 1460 } catch (RemoteException ex) { 1461 Slog.w(TAG, "Failed to update time zone for: " + r.info.processName); 1462 } 1463 } 1464 } 1465 } 1466 } break; 1467 case CLEAR_DNS_CACHE_MSG: { 1468 synchronized (ActivityManagerService.this) { 1469 for (int i = mLruProcesses.size() - 1 ; i >= 0 ; i--) { 1470 ProcessRecord r = mLruProcesses.get(i); 1471 if (r.thread != null) { 1472 try { 1473 r.thread.clearDnsCache(); 1474 } catch (RemoteException ex) { 1475 Slog.w(TAG, "Failed to clear dns cache for: " + r.info.processName); 1476 } 1477 } 1478 } 1479 } 1480 } break; 1481 case UPDATE_HTTP_PROXY_MSG: { 1482 ProxyInfo proxy = (ProxyInfo)msg.obj; 1483 String host = ""; 1484 String port = ""; 1485 String exclList = ""; 1486 Uri pacFileUrl = Uri.EMPTY; 1487 if (proxy != null) { 1488 host = proxy.getHost(); 1489 port = Integer.toString(proxy.getPort()); 1490 exclList = proxy.getExclusionListAsString(); 1491 pacFileUrl = proxy.getPacFileUrl(); 1492 } 1493 synchronized (ActivityManagerService.this) { 1494 for (int i = mLruProcesses.size() - 1 ; i >= 0 ; i--) { 1495 ProcessRecord r = mLruProcesses.get(i); 1496 if (r.thread != null) { 1497 try { 1498 r.thread.setHttpProxy(host, port, exclList, pacFileUrl); 1499 } catch (RemoteException ex) { 1500 Slog.w(TAG, "Failed to update http proxy for: " + 1501 r.info.processName); 1502 } 1503 } 1504 } 1505 } 1506 } break; 1507 case SHOW_UID_ERROR_MSG: { 1508 if (mShowDialogs) { 1509 AlertDialog d = new BaseErrorDialog(mContext); 1510 d.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ERROR); 1511 d.setCancelable(false); 1512 d.setTitle(mContext.getText(R.string.android_system_label)); 1513 d.setMessage(mContext.getText(R.string.system_error_wipe_data)); 1514 d.setButton(DialogInterface.BUTTON_POSITIVE, mContext.getText(R.string.ok), 1515 mHandler.obtainMessage(DISMISS_DIALOG_MSG, d)); 1516 d.show(); 1517 } 1518 } break; 1519 case SHOW_FINGERPRINT_ERROR_MSG: { 1520 if (mShowDialogs) { 1521 AlertDialog d = new BaseErrorDialog(mContext); 1522 d.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ERROR); 1523 d.setCancelable(false); 1524 d.setTitle(mContext.getText(R.string.android_system_label)); 1525 d.setMessage(mContext.getText(R.string.system_error_manufacturer)); 1526 d.setButton(DialogInterface.BUTTON_POSITIVE, mContext.getText(R.string.ok), 1527 mHandler.obtainMessage(DISMISS_DIALOG_MSG, d)); 1528 d.show(); 1529 } 1530 } break; 1531 case PROC_START_TIMEOUT_MSG: { 1532 if (mDidDexOpt) { 1533 mDidDexOpt = false; 1534 Message nmsg = mHandler.obtainMessage(PROC_START_TIMEOUT_MSG); 1535 nmsg.obj = msg.obj; 1536 mHandler.sendMessageDelayed(nmsg, PROC_START_TIMEOUT); 1537 return; 1538 } 1539 ProcessRecord app = (ProcessRecord)msg.obj; 1540 synchronized (ActivityManagerService.this) { 1541 processStartTimedOutLocked(app); 1542 } 1543 } break; 1544 case DO_PENDING_ACTIVITY_LAUNCHES_MSG: { 1545 synchronized (ActivityManagerService.this) { 1546 mStackSupervisor.doPendingActivityLaunchesLocked(true); 1547 } 1548 } break; 1549 case KILL_APPLICATION_MSG: { 1550 synchronized (ActivityManagerService.this) { 1551 int appid = msg.arg1; 1552 boolean restart = (msg.arg2 == 1); 1553 Bundle bundle = (Bundle)msg.obj; 1554 String pkg = bundle.getString("pkg"); 1555 String reason = bundle.getString("reason"); 1556 forceStopPackageLocked(pkg, appid, restart, false, true, false, 1557 false, UserHandle.USER_ALL, reason); 1558 } 1559 } break; 1560 case FINALIZE_PENDING_INTENT_MSG: { 1561 ((PendingIntentRecord)msg.obj).completeFinalize(); 1562 } break; 1563 case POST_HEAVY_NOTIFICATION_MSG: { 1564 INotificationManager inm = NotificationManager.getService(); 1565 if (inm == null) { 1566 return; 1567 } 1568 1569 ActivityRecord root = (ActivityRecord)msg.obj; 1570 ProcessRecord process = root.app; 1571 if (process == null) { 1572 return; 1573 } 1574 1575 try { 1576 Context context = mContext.createPackageContext(process.info.packageName, 0); 1577 String text = mContext.getString(R.string.heavy_weight_notification, 1578 context.getApplicationInfo().loadLabel(context.getPackageManager())); 1579 Notification notification = new Notification(); 1580 notification.icon = com.android.internal.R.drawable.stat_sys_adb; //context.getApplicationInfo().icon; 1581 notification.when = 0; 1582 notification.flags = Notification.FLAG_ONGOING_EVENT; 1583 notification.tickerText = text; 1584 notification.defaults = 0; // please be quiet 1585 notification.sound = null; 1586 notification.vibrate = null; 1587 notification.color = mContext.getResources().getColor( 1588 com.android.internal.R.color.system_notification_accent_color); 1589 notification.setLatestEventInfo(context, text, 1590 mContext.getText(R.string.heavy_weight_notification_detail), 1591 PendingIntent.getActivityAsUser(mContext, 0, root.intent, 1592 PendingIntent.FLAG_CANCEL_CURRENT, null, 1593 new UserHandle(root.userId))); 1594 1595 try { 1596 int[] outId = new int[1]; 1597 inm.enqueueNotificationWithTag("android", "android", null, 1598 R.string.heavy_weight_notification, 1599 notification, outId, root.userId); 1600 } catch (RuntimeException e) { 1601 Slog.w(ActivityManagerService.TAG, 1602 "Error showing notification for heavy-weight app", e); 1603 } catch (RemoteException e) { 1604 } 1605 } catch (NameNotFoundException e) { 1606 Slog.w(TAG, "Unable to create context for heavy notification", e); 1607 } 1608 } break; 1609 case CANCEL_HEAVY_NOTIFICATION_MSG: { 1610 INotificationManager inm = NotificationManager.getService(); 1611 if (inm == null) { 1612 return; 1613 } 1614 try { 1615 inm.cancelNotificationWithTag("android", null, 1616 R.string.heavy_weight_notification, msg.arg1); 1617 } catch (RuntimeException e) { 1618 Slog.w(ActivityManagerService.TAG, 1619 "Error canceling notification for service", e); 1620 } catch (RemoteException e) { 1621 } 1622 } break; 1623 case CHECK_EXCESSIVE_WAKE_LOCKS_MSG: { 1624 synchronized (ActivityManagerService.this) { 1625 checkExcessivePowerUsageLocked(true); 1626 removeMessages(CHECK_EXCESSIVE_WAKE_LOCKS_MSG); 1627 Message nmsg = obtainMessage(CHECK_EXCESSIVE_WAKE_LOCKS_MSG); 1628 sendMessageDelayed(nmsg, POWER_CHECK_DELAY); 1629 } 1630 } break; 1631 case SHOW_COMPAT_MODE_DIALOG_MSG: { 1632 synchronized (ActivityManagerService.this) { 1633 ActivityRecord ar = (ActivityRecord)msg.obj; 1634 if (mCompatModeDialog != null) { 1635 if (mCompatModeDialog.mAppInfo.packageName.equals( 1636 ar.info.applicationInfo.packageName)) { 1637 return; 1638 } 1639 mCompatModeDialog.dismiss(); 1640 mCompatModeDialog = null; 1641 } 1642 if (ar != null && false) { 1643 if (mCompatModePackages.getPackageAskCompatModeLocked( 1644 ar.packageName)) { 1645 int mode = mCompatModePackages.computeCompatModeLocked( 1646 ar.info.applicationInfo); 1647 if (mode == ActivityManager.COMPAT_MODE_DISABLED 1648 || mode == ActivityManager.COMPAT_MODE_ENABLED) { 1649 mCompatModeDialog = new CompatModeDialog( 1650 ActivityManagerService.this, mContext, 1651 ar.info.applicationInfo); 1652 mCompatModeDialog.show(); 1653 } 1654 } 1655 } 1656 } 1657 break; 1658 } 1659 case DISPATCH_PROCESSES_CHANGED: { 1660 dispatchProcessesChanged(); 1661 break; 1662 } 1663 case DISPATCH_PROCESS_DIED: { 1664 final int pid = msg.arg1; 1665 final int uid = msg.arg2; 1666 dispatchProcessDied(pid, uid); 1667 break; 1668 } 1669 case REPORT_MEM_USAGE_MSG: { 1670 final ArrayList<ProcessMemInfo> memInfos = (ArrayList<ProcessMemInfo>)msg.obj; 1671 Thread thread = new Thread() { 1672 @Override public void run() { 1673 reportMemUsage(memInfos); 1674 } 1675 }; 1676 thread.start(); 1677 break; 1678 } 1679 case START_USER_SWITCH_MSG: { 1680 showUserSwitchDialog(msg.arg1, (String) msg.obj); 1681 break; 1682 } 1683 case REPORT_USER_SWITCH_MSG: { 1684 dispatchUserSwitch((UserStartedState) msg.obj, msg.arg1, msg.arg2); 1685 break; 1686 } 1687 case CONTINUE_USER_SWITCH_MSG: { 1688 continueUserSwitch((UserStartedState) msg.obj, msg.arg1, msg.arg2); 1689 break; 1690 } 1691 case USER_SWITCH_TIMEOUT_MSG: { 1692 timeoutUserSwitch((UserStartedState) msg.obj, msg.arg1, msg.arg2); 1693 break; 1694 } 1695 case IMMERSIVE_MODE_LOCK_MSG: { 1696 final boolean nextState = (msg.arg1 != 0); 1697 if (mUpdateLock.isHeld() != nextState) { 1698 if (DEBUG_IMMERSIVE) { 1699 final ActivityRecord r = (ActivityRecord) msg.obj; 1700 Slog.d(TAG, "Applying new update lock state '" + nextState + "' for " + r); 1701 } 1702 if (nextState) { 1703 mUpdateLock.acquire(); 1704 } else { 1705 mUpdateLock.release(); 1706 } 1707 } 1708 break; 1709 } 1710 case PERSIST_URI_GRANTS_MSG: { 1711 writeGrantedUriPermissions(); 1712 break; 1713 } 1714 case REQUEST_ALL_PSS_MSG: { 1715 synchronized (ActivityManagerService.this) { 1716 requestPssAllProcsLocked(SystemClock.uptimeMillis(), true, false); 1717 } 1718 break; 1719 } 1720 case START_PROFILES_MSG: { 1721 synchronized (ActivityManagerService.this) { 1722 startProfilesLocked(); 1723 } 1724 break; 1725 } 1726 case UPDATE_TIME: { 1727 synchronized (ActivityManagerService.this) { 1728 for (int i = mLruProcesses.size() - 1 ; i >= 0 ; i--) { 1729 ProcessRecord r = mLruProcesses.get(i); 1730 if (r.thread != null) { 1731 try { 1732 r.thread.updateTimePrefs(msg.arg1 == 0 ? false : true); 1733 } catch (RemoteException ex) { 1734 Slog.w(TAG, "Failed to update preferences for: " + r.info.processName); 1735 } 1736 } 1737 } 1738 } 1739 break; 1740 } 1741 case SYSTEM_USER_START_MSG: { 1742 mBatteryStatsService.noteEvent(BatteryStats.HistoryItem.EVENT_USER_RUNNING_START, 1743 Integer.toString(msg.arg1), msg.arg1); 1744 mSystemServiceManager.startUser(msg.arg1); 1745 break; 1746 } 1747 case SYSTEM_USER_CURRENT_MSG: { 1748 mBatteryStatsService.noteEvent( 1749 BatteryStats.HistoryItem.EVENT_USER_FOREGROUND_FINISH, 1750 Integer.toString(msg.arg2), msg.arg2); 1751 mBatteryStatsService.noteEvent( 1752 BatteryStats.HistoryItem.EVENT_USER_FOREGROUND_START, 1753 Integer.toString(msg.arg1), msg.arg1); 1754 mSystemServiceManager.switchUser(msg.arg1); 1755 break; 1756 } 1757 case ENTER_ANIMATION_COMPLETE_MSG: { 1758 synchronized (ActivityManagerService.this) { 1759 ActivityRecord r = ActivityRecord.forToken((IBinder) msg.obj); 1760 if (r != null && r.app != null && r.app.thread != null) { 1761 try { 1762 r.app.thread.scheduleEnterAnimationComplete(r.appToken); 1763 } catch (RemoteException e) { 1764 } 1765 } 1766 } 1767 break; 1768 } 1769 case FINISH_BOOTING_MSG: { 1770 if (msg.arg1 != 0) { 1771 finishBooting(); 1772 } 1773 if (msg.arg2 != 0) { 1774 enableScreenAfterBoot(); 1775 } 1776 break; 1777 } 1778 case SEND_LOCALE_TO_MOUNT_DAEMON_MSG: { 1779 try { 1780 Locale l = (Locale) msg.obj; 1781 IBinder service = ServiceManager.getService("mount"); 1782 IMountService mountService = IMountService.Stub.asInterface(service); 1783 Log.d(TAG, "Storing locale " + l.toLanguageTag() + " for decryption UI"); 1784 mountService.setField(StorageManager.SYSTEM_LOCALE_KEY, l.toLanguageTag()); 1785 } catch (RemoteException e) { 1786 Log.e(TAG, "Error storing locale for decryption UI", e); 1787 } 1788 break; 1789 } 1790 case DISMISS_DIALOG_MSG: { 1791 final Dialog d = (Dialog) msg.obj; 1792 d.dismiss(); 1793 break; 1794 } 1795 case NOTIFY_TASK_STACK_CHANGE_LISTENERS_MSG: { 1796 synchronized (ActivityManagerService.this) { 1797 int i = mTaskStackListeners.beginBroadcast(); 1798 while (i > 0) { 1799 i--; 1800 try { 1801 // Make a one-way callback to the listener 1802 mTaskStackListeners.getBroadcastItem(i).onTaskStackChanged(); 1803 } catch (RemoteException e){ 1804 // Handled by the RemoteCallbackList 1805 } 1806 } 1807 mTaskStackListeners.finishBroadcast(); 1808 } 1809 break; 1810 } 1811 } 1812 } 1813 }; 1814 1815 static final int COLLECT_PSS_BG_MSG = 1; 1816 1817 final Handler mBgHandler = new Handler(BackgroundThread.getHandler().getLooper()) { 1818 @Override 1819 public void handleMessage(Message msg) { 1820 switch (msg.what) { 1821 case COLLECT_PSS_BG_MSG: { 1822 long start = SystemClock.uptimeMillis(); 1823 MemInfoReader memInfo = null; 1824 synchronized (ActivityManagerService.this) { 1825 if (mFullPssPending) { 1826 mFullPssPending = false; 1827 memInfo = new MemInfoReader(); 1828 } 1829 } 1830 if (memInfo != null) { 1831 updateCpuStatsNow(); 1832 long nativeTotalPss = 0; 1833 synchronized (mProcessCpuTracker) { 1834 final int N = mProcessCpuTracker.countStats(); 1835 for (int j=0; j<N; j++) { 1836 ProcessCpuTracker.Stats st = mProcessCpuTracker.getStats(j); 1837 if (st.vsize <= 0 || st.uid >= Process.FIRST_APPLICATION_UID) { 1838 // This is definitely an application process; skip it. 1839 continue; 1840 } 1841 synchronized (mPidsSelfLocked) { 1842 if (mPidsSelfLocked.indexOfKey(st.pid) >= 0) { 1843 // This is one of our own processes; skip it. 1844 continue; 1845 } 1846 } 1847 nativeTotalPss += Debug.getPss(st.pid, null, null); 1848 } 1849 } 1850 memInfo.readMemInfo(); 1851 synchronized (ActivityManagerService.this) { 1852 if (DEBUG_PSS) Slog.d(TAG, "Collected native and kernel memory in " 1853 + (SystemClock.uptimeMillis()-start) + "ms"); 1854 mProcessStats.addSysMemUsageLocked(memInfo.getCachedSizeKb(), 1855 memInfo.getFreeSizeKb(), memInfo.getZramTotalSizeKb(), 1856 memInfo.getKernelUsedSizeKb(), nativeTotalPss); 1857 } 1858 } 1859 1860 int num = 0; 1861 long[] tmp = new long[1]; 1862 do { 1863 ProcessRecord proc; 1864 int procState; 1865 int pid; 1866 long lastPssTime; 1867 synchronized (ActivityManagerService.this) { 1868 if (mPendingPssProcesses.size() <= 0) { 1869 if (mTestPssMode || DEBUG_PSS) Slog.d(TAG, "Collected PSS of " + num 1870 + " processes in " + (SystemClock.uptimeMillis()-start) + "ms"); 1871 mPendingPssProcesses.clear(); 1872 return; 1873 } 1874 proc = mPendingPssProcesses.remove(0); 1875 procState = proc.pssProcState; 1876 lastPssTime = proc.lastPssTime; 1877 if (proc.thread != null && procState == proc.setProcState 1878 && (lastPssTime+ProcessList.PSS_SAFE_TIME_FROM_STATE_CHANGE) 1879 < SystemClock.uptimeMillis()) { 1880 pid = proc.pid; 1881 } else { 1882 proc = null; 1883 pid = 0; 1884 } 1885 } 1886 if (proc != null) { 1887 long pss = Debug.getPss(pid, tmp, null); 1888 synchronized (ActivityManagerService.this) { 1889 if (pss != 0 && proc.thread != null && proc.setProcState == procState 1890 && proc.pid == pid && proc.lastPssTime == lastPssTime) { 1891 num++; 1892 recordPssSample(proc, procState, pss, tmp[0], 1893 SystemClock.uptimeMillis()); 1894 } 1895 } 1896 } 1897 } while (true); 1898 } 1899 } 1900 } 1901 }; 1902 1903 public void setSystemProcess() { 1904 try { 1905 ServiceManager.addService(Context.ACTIVITY_SERVICE, this, true); 1906 ServiceManager.addService(ProcessStats.SERVICE_NAME, mProcessStats); 1907 ServiceManager.addService("meminfo", new MemBinder(this)); 1908 ServiceManager.addService("gfxinfo", new GraphicsBinder(this)); 1909 ServiceManager.addService("dbinfo", new DbBinder(this)); 1910 if (MONITOR_CPU_USAGE) { 1911 ServiceManager.addService("cpuinfo", new CpuBinder(this)); 1912 } 1913 ServiceManager.addService("permission", new PermissionController(this)); 1914 1915 ApplicationInfo info = mContext.getPackageManager().getApplicationInfo( 1916 "android", STOCK_PM_FLAGS); 1917 mSystemThread.installSystemApplicationInfo(info, getClass().getClassLoader()); 1918 1919 synchronized (this) { 1920 ProcessRecord app = newProcessRecordLocked(info, info.processName, false, 0); 1921 app.persistent = true; 1922 app.pid = MY_PID; 1923 app.maxAdj = ProcessList.SYSTEM_ADJ; 1924 app.makeActive(mSystemThread.getApplicationThread(), mProcessStats); 1925 mProcessNames.put(app.processName, app.uid, app); 1926 synchronized (mPidsSelfLocked) { 1927 mPidsSelfLocked.put(app.pid, app); 1928 } 1929 updateLruProcessLocked(app, false, null); 1930 updateOomAdjLocked(); 1931 } 1932 } catch (PackageManager.NameNotFoundException e) { 1933 throw new RuntimeException( 1934 "Unable to find android system package", e); 1935 } 1936 } 1937 1938 public void setWindowManager(WindowManagerService wm) { 1939 mWindowManager = wm; 1940 mStackSupervisor.setWindowManager(wm); 1941 } 1942 1943 public void setUsageStatsManager(UsageStatsManagerInternal usageStatsManager) { 1944 mUsageStatsService = usageStatsManager; 1945 } 1946 1947 public void startObservingNativeCrashes() { 1948 final NativeCrashListener ncl = new NativeCrashListener(this); 1949 ncl.start(); 1950 } 1951 1952 public IAppOpsService getAppOpsService() { 1953 return mAppOpsService; 1954 } 1955 1956 static class MemBinder extends Binder { 1957 ActivityManagerService mActivityManagerService; 1958 MemBinder(ActivityManagerService activityManagerService) { 1959 mActivityManagerService = activityManagerService; 1960 } 1961 1962 @Override 1963 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 1964 if (mActivityManagerService.checkCallingPermission(android.Manifest.permission.DUMP) 1965 != PackageManager.PERMISSION_GRANTED) { 1966 pw.println("Permission Denial: can't dump meminfo from from pid=" 1967 + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid() 1968 + " without permission " + android.Manifest.permission.DUMP); 1969 return; 1970 } 1971 1972 mActivityManagerService.dumpApplicationMemoryUsage(fd, pw, " ", args, false, null); 1973 } 1974 } 1975 1976 static class GraphicsBinder extends Binder { 1977 ActivityManagerService mActivityManagerService; 1978 GraphicsBinder(ActivityManagerService activityManagerService) { 1979 mActivityManagerService = activityManagerService; 1980 } 1981 1982 @Override 1983 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 1984 if (mActivityManagerService.checkCallingPermission(android.Manifest.permission.DUMP) 1985 != PackageManager.PERMISSION_GRANTED) { 1986 pw.println("Permission Denial: can't dump gfxinfo from from pid=" 1987 + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid() 1988 + " without permission " + android.Manifest.permission.DUMP); 1989 return; 1990 } 1991 1992 mActivityManagerService.dumpGraphicsHardwareUsage(fd, pw, args); 1993 } 1994 } 1995 1996 static class DbBinder extends Binder { 1997 ActivityManagerService mActivityManagerService; 1998 DbBinder(ActivityManagerService activityManagerService) { 1999 mActivityManagerService = activityManagerService; 2000 } 2001 2002 @Override 2003 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2004 if (mActivityManagerService.checkCallingPermission(android.Manifest.permission.DUMP) 2005 != PackageManager.PERMISSION_GRANTED) { 2006 pw.println("Permission Denial: can't dump dbinfo from from pid=" 2007 + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid() 2008 + " without permission " + android.Manifest.permission.DUMP); 2009 return; 2010 } 2011 2012 mActivityManagerService.dumpDbInfo(fd, pw, args); 2013 } 2014 } 2015 2016 static class CpuBinder extends Binder { 2017 ActivityManagerService mActivityManagerService; 2018 CpuBinder(ActivityManagerService activityManagerService) { 2019 mActivityManagerService = activityManagerService; 2020 } 2021 2022 @Override 2023 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2024 if (mActivityManagerService.checkCallingPermission(android.Manifest.permission.DUMP) 2025 != PackageManager.PERMISSION_GRANTED) { 2026 pw.println("Permission Denial: can't dump cpuinfo from from pid=" 2027 + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid() 2028 + " without permission " + android.Manifest.permission.DUMP); 2029 return; 2030 } 2031 2032 synchronized (mActivityManagerService.mProcessCpuTracker) { 2033 pw.print(mActivityManagerService.mProcessCpuTracker.printCurrentLoad()); 2034 pw.print(mActivityManagerService.mProcessCpuTracker.printCurrentState( 2035 SystemClock.uptimeMillis())); 2036 } 2037 } 2038 } 2039 2040 public static final class Lifecycle extends SystemService { 2041 private final ActivityManagerService mService; 2042 2043 public Lifecycle(Context context) { 2044 super(context); 2045 mService = new ActivityManagerService(context); 2046 } 2047 2048 @Override 2049 public void onStart() { 2050 mService.start(); 2051 } 2052 2053 public ActivityManagerService getService() { 2054 return mService; 2055 } 2056 } 2057 2058 // Note: This method is invoked on the main thread but may need to attach various 2059 // handlers to other threads. So take care to be explicit about the looper. 2060 public ActivityManagerService(Context systemContext) { 2061 mContext = systemContext; 2062 mFactoryTest = FactoryTest.getMode(); 2063 mSystemThread = ActivityThread.currentActivityThread(); 2064 2065 Slog.i(TAG, "Memory class: " + ActivityManager.staticGetMemoryClass()); 2066 2067 mHandlerThread = new ServiceThread(TAG, 2068 android.os.Process.THREAD_PRIORITY_FOREGROUND, false /*allowIo*/); 2069 mHandlerThread.start(); 2070 mHandler = new MainHandler(mHandlerThread.getLooper()); 2071 2072 mFgBroadcastQueue = new BroadcastQueue(this, mHandler, 2073 "foreground", BROADCAST_FG_TIMEOUT, false); 2074 mBgBroadcastQueue = new BroadcastQueue(this, mHandler, 2075 "background", BROADCAST_BG_TIMEOUT, true); 2076 mBroadcastQueues[0] = mFgBroadcastQueue; 2077 mBroadcastQueues[1] = mBgBroadcastQueue; 2078 2079 mServices = new ActiveServices(this); 2080 mProviderMap = new ProviderMap(this); 2081 2082 // TODO: Move creation of battery stats service outside of activity manager service. 2083 File dataDir = Environment.getDataDirectory(); 2084 File systemDir = new File(dataDir, "system"); 2085 systemDir.mkdirs(); 2086 mBatteryStatsService = new BatteryStatsService(systemDir, mHandler); 2087 mBatteryStatsService.getActiveStatistics().readLocked(); 2088 mBatteryStatsService.getActiveStatistics().writeAsyncLocked(); 2089 mOnBattery = DEBUG_POWER ? true 2090 : mBatteryStatsService.getActiveStatistics().getIsOnBattery(); 2091 mBatteryStatsService.getActiveStatistics().setCallback(this); 2092 2093 mProcessStats = new ProcessStatsService(this, new File(systemDir, "procstats")); 2094 2095 mAppOpsService = new AppOpsService(new File(systemDir, "appops.xml"), mHandler); 2096 2097 mGrantFile = new AtomicFile(new File(systemDir, "urigrants.xml")); 2098 2099 // User 0 is the first and only user that runs at boot. 2100 mStartedUsers.put(0, new UserStartedState(new UserHandle(0), true)); 2101 mUserLru.add(Integer.valueOf(0)); 2102 updateStartedUserArrayLocked(); 2103 2104 GL_ES_VERSION = SystemProperties.getInt("ro.opengles.version", 2105 ConfigurationInfo.GL_ES_VERSION_UNDEFINED); 2106 2107 mTrackingAssociations = "1".equals(SystemProperties.get("debug.track-associations")); 2108 2109 mConfiguration.setToDefaults(); 2110 mConfiguration.locale = Locale.getDefault(); 2111 2112 mConfigurationSeq = mConfiguration.seq = 1; 2113 mProcessCpuTracker.init(); 2114 2115 mCompatModePackages = new CompatModePackages(this, systemDir, mHandler); 2116 mIntentFirewall = new IntentFirewall(new IntentFirewallInterface(), mHandler); 2117 mStackSupervisor = new ActivityStackSupervisor(this); 2118 mTaskPersister = new TaskPersister(systemDir, mStackSupervisor); 2119 2120 mProcessCpuThread = new Thread("CpuTracker") { 2121 @Override 2122 public void run() { 2123 while (true) { 2124 try { 2125 try { 2126 synchronized(this) { 2127 final long now = SystemClock.uptimeMillis(); 2128 long nextCpuDelay = (mLastCpuTime.get()+MONITOR_CPU_MAX_TIME)-now; 2129 long nextWriteDelay = (mLastWriteTime+BATTERY_STATS_TIME)-now; 2130 //Slog.i(TAG, "Cpu delay=" + nextCpuDelay 2131 // + ", write delay=" + nextWriteDelay); 2132 if (nextWriteDelay < nextCpuDelay) { 2133 nextCpuDelay = nextWriteDelay; 2134 } 2135 if (nextCpuDelay > 0) { 2136 mProcessCpuMutexFree.set(true); 2137 this.wait(nextCpuDelay); 2138 } 2139 } 2140 } catch (InterruptedException e) { 2141 } 2142 updateCpuStatsNow(); 2143 } catch (Exception e) { 2144 Slog.e(TAG, "Unexpected exception collecting process stats", e); 2145 } 2146 } 2147 } 2148 }; 2149 2150 Watchdog.getInstance().addMonitor(this); 2151 Watchdog.getInstance().addThread(mHandler); 2152 } 2153 2154 public void setSystemServiceManager(SystemServiceManager mgr) { 2155 mSystemServiceManager = mgr; 2156 } 2157 2158 public void setInstaller(Installer installer) { 2159 mInstaller = installer; 2160 } 2161 2162 private void start() { 2163 Process.removeAllProcessGroups(); 2164 mProcessCpuThread.start(); 2165 2166 mBatteryStatsService.publish(mContext); 2167 mAppOpsService.publish(mContext); 2168 Slog.d("AppOps", "AppOpsService published"); 2169 LocalServices.addService(ActivityManagerInternal.class, new LocalService()); 2170 } 2171 2172 public void initPowerManagement() { 2173 mStackSupervisor.initPowerManagement(); 2174 mBatteryStatsService.initPowerManagement(); 2175 } 2176 2177 @Override 2178 public boolean onTransact(int code, Parcel data, Parcel reply, int flags) 2179 throws RemoteException { 2180 if (code == SYSPROPS_TRANSACTION) { 2181 // We need to tell all apps about the system property change. 2182 ArrayList<IBinder> procs = new ArrayList<IBinder>(); 2183 synchronized(this) { 2184 final int NP = mProcessNames.getMap().size(); 2185 for (int ip=0; ip<NP; ip++) { 2186 SparseArray<ProcessRecord> apps = mProcessNames.getMap().valueAt(ip); 2187 final int NA = apps.size(); 2188 for (int ia=0; ia<NA; ia++) { 2189 ProcessRecord app = apps.valueAt(ia); 2190 if (app.thread != null) { 2191 procs.add(app.thread.asBinder()); 2192 } 2193 } 2194 } 2195 } 2196 2197 int N = procs.size(); 2198 for (int i=0; i<N; i++) { 2199 Parcel data2 = Parcel.obtain(); 2200 try { 2201 procs.get(i).transact(IBinder.SYSPROPS_TRANSACTION, data2, null, 0); 2202 } catch (RemoteException e) { 2203 } 2204 data2.recycle(); 2205 } 2206 } 2207 try { 2208 return super.onTransact(code, data, reply, flags); 2209 } catch (RuntimeException e) { 2210 // The activity manager only throws security exceptions, so let's 2211 // log all others. 2212 if (!(e instanceof SecurityException)) { 2213 Slog.wtf(TAG, "Activity Manager Crash", e); 2214 } 2215 throw e; 2216 } 2217 } 2218 2219 void updateCpuStats() { 2220 final long now = SystemClock.uptimeMillis(); 2221 if (mLastCpuTime.get() >= now - MONITOR_CPU_MIN_TIME) { 2222 return; 2223 } 2224 if (mProcessCpuMutexFree.compareAndSet(true, false)) { 2225 synchronized (mProcessCpuThread) { 2226 mProcessCpuThread.notify(); 2227 } 2228 } 2229 } 2230 2231 void updateCpuStatsNow() { 2232 synchronized (mProcessCpuTracker) { 2233 mProcessCpuMutexFree.set(false); 2234 final long now = SystemClock.uptimeMillis(); 2235 boolean haveNewCpuStats = false; 2236 2237 if (MONITOR_CPU_USAGE && 2238 mLastCpuTime.get() < (now-MONITOR_CPU_MIN_TIME)) { 2239 mLastCpuTime.set(now); 2240 haveNewCpuStats = true; 2241 mProcessCpuTracker.update(); 2242 //Slog.i(TAG, mProcessCpu.printCurrentState()); 2243 //Slog.i(TAG, "Total CPU usage: " 2244 // + mProcessCpu.getTotalCpuPercent() + "%"); 2245 2246 // Slog the cpu usage if the property is set. 2247 if ("true".equals(SystemProperties.get("events.cpu"))) { 2248 int user = mProcessCpuTracker.getLastUserTime(); 2249 int system = mProcessCpuTracker.getLastSystemTime(); 2250 int iowait = mProcessCpuTracker.getLastIoWaitTime(); 2251 int irq = mProcessCpuTracker.getLastIrqTime(); 2252 int softIrq = mProcessCpuTracker.getLastSoftIrqTime(); 2253 int idle = mProcessCpuTracker.getLastIdleTime(); 2254 2255 int total = user + system + iowait + irq + softIrq + idle; 2256 if (total == 0) total = 1; 2257 2258 EventLog.writeEvent(EventLogTags.CPU, 2259 ((user+system+iowait+irq+softIrq) * 100) / total, 2260 (user * 100) / total, 2261 (system * 100) / total, 2262 (iowait * 100) / total, 2263 (irq * 100) / total, 2264 (softIrq * 100) / total); 2265 } 2266 } 2267 2268 long[] cpuSpeedTimes = mProcessCpuTracker.getLastCpuSpeedTimes(); 2269 final BatteryStatsImpl bstats = mBatteryStatsService.getActiveStatistics(); 2270 synchronized(bstats) { 2271 synchronized(mPidsSelfLocked) { 2272 if (haveNewCpuStats) { 2273 if (mOnBattery) { 2274 int perc = bstats.startAddingCpuLocked(); 2275 int totalUTime = 0; 2276 int totalSTime = 0; 2277 final int N = mProcessCpuTracker.countStats(); 2278 for (int i=0; i<N; i++) { 2279 ProcessCpuTracker.Stats st = mProcessCpuTracker.getStats(i); 2280 if (!st.working) { 2281 continue; 2282 } 2283 ProcessRecord pr = mPidsSelfLocked.get(st.pid); 2284 int otherUTime = (st.rel_utime*perc)/100; 2285 int otherSTime = (st.rel_stime*perc)/100; 2286 totalUTime += otherUTime; 2287 totalSTime += otherSTime; 2288 if (pr != null) { 2289 BatteryStatsImpl.Uid.Proc ps = pr.curProcBatteryStats; 2290 if (ps == null || !ps.isActive()) { 2291 pr.curProcBatteryStats = ps = bstats.getProcessStatsLocked( 2292 pr.info.uid, pr.processName); 2293 } 2294 ps.addCpuTimeLocked(st.rel_utime-otherUTime, 2295 st.rel_stime-otherSTime); 2296 ps.addSpeedStepTimes(cpuSpeedTimes); 2297 pr.curCpuTime += (st.rel_utime+st.rel_stime) * 10; 2298 } else { 2299 BatteryStatsImpl.Uid.Proc ps = st.batteryStats; 2300 if (ps == null || !ps.isActive()) { 2301 st.batteryStats = ps = bstats.getProcessStatsLocked( 2302 bstats.mapUid(st.uid), st.name); 2303 } 2304 ps.addCpuTimeLocked(st.rel_utime-otherUTime, 2305 st.rel_stime-otherSTime); 2306 ps.addSpeedStepTimes(cpuSpeedTimes); 2307 } 2308 } 2309 bstats.finishAddingCpuLocked(perc, totalUTime, 2310 totalSTime, cpuSpeedTimes); 2311 } 2312 } 2313 } 2314 2315 if (mLastWriteTime < (now-BATTERY_STATS_TIME)) { 2316 mLastWriteTime = now; 2317 mBatteryStatsService.getActiveStatistics().writeAsyncLocked(); 2318 } 2319 } 2320 } 2321 } 2322 2323 @Override 2324 public void batteryNeedsCpuUpdate() { 2325 updateCpuStatsNow(); 2326 } 2327 2328 @Override 2329 public void batteryPowerChanged(boolean onBattery) { 2330 // When plugging in, update the CPU stats first before changing 2331 // the plug state. 2332 updateCpuStatsNow(); 2333 synchronized (this) { 2334 synchronized(mPidsSelfLocked) { 2335 mOnBattery = DEBUG_POWER ? true : onBattery; 2336 } 2337 } 2338 } 2339 2340 /** 2341 * Initialize the application bind args. These are passed to each 2342 * process when the bindApplication() IPC is sent to the process. They're 2343 * lazily setup to make sure the services are running when they're asked for. 2344 */ 2345 private HashMap<String, IBinder> getCommonServicesLocked(boolean isolated) { 2346 if (mAppBindArgs == null) { 2347 mAppBindArgs = new HashMap<>(); 2348 2349 // Isolated processes won't get this optimization, so that we don't 2350 // violate the rules about which services they have access to. 2351 if (!isolated) { 2352 // Setup the application init args 2353 mAppBindArgs.put("package", ServiceManager.getService("package")); 2354 mAppBindArgs.put("window", ServiceManager.getService("window")); 2355 mAppBindArgs.put(Context.ALARM_SERVICE, 2356 ServiceManager.getService(Context.ALARM_SERVICE)); 2357 } 2358 } 2359 return mAppBindArgs; 2360 } 2361 2362 final void setFocusedActivityLocked(ActivityRecord r, String reason) { 2363 if (mFocusedActivity != r) { 2364 if (DEBUG_FOCUS) Slog.d(TAG, "setFocusedActivityLocked: r=" + r); 2365 mFocusedActivity = r; 2366 if (r.task != null && r.task.voiceInteractor != null) { 2367 startRunningVoiceLocked(); 2368 } else { 2369 finishRunningVoiceLocked(); 2370 } 2371 mStackSupervisor.setFocusedStack(r, reason + " setFocusedActivity"); 2372 if (r != null) { 2373 mWindowManager.setFocusedApp(r.appToken, true); 2374 } 2375 applyUpdateLockStateLocked(r); 2376 } 2377 EventLog.writeEvent(EventLogTags.AM_FOCUSED_ACTIVITY, mCurrentUserId, 2378 mFocusedActivity == null ? "NULL" : mFocusedActivity.shortComponentName); 2379 } 2380 2381 final void clearFocusedActivity(ActivityRecord r) { 2382 if (mFocusedActivity == r) { 2383 mFocusedActivity = null; 2384 } 2385 } 2386 2387 @Override 2388 public void setFocusedStack(int stackId) { 2389 if (DEBUG_FOCUS) Slog.d(TAG, "setFocusedStack: stackId=" + stackId); 2390 synchronized (ActivityManagerService.this) { 2391 ActivityStack stack = mStackSupervisor.getStack(stackId); 2392 if (stack != null) { 2393 ActivityRecord r = stack.topRunningActivityLocked(null); 2394 if (r != null) { 2395 setFocusedActivityLocked(r, "setFocusedStack"); 2396 } 2397 } 2398 } 2399 } 2400 2401 /** Sets the task stack listener that gets callbacks when a task stack changes. */ 2402 @Override 2403 public void registerTaskStackListener(ITaskStackListener listener) throws RemoteException { 2404 synchronized (ActivityManagerService.this) { 2405 if (listener != null) { 2406 mTaskStackListeners.register(listener); 2407 } 2408 } 2409 } 2410 2411 @Override 2412 public void notifyActivityDrawn(IBinder token) { 2413 if (DEBUG_VISBILITY) Slog.d(TAG, "notifyActivityDrawn: token=" + token); 2414 synchronized (this) { 2415 ActivityRecord r= mStackSupervisor.isInAnyStackLocked(token); 2416 if (r != null) { 2417 r.task.stack.notifyActivityDrawnLocked(r); 2418 } 2419 } 2420 } 2421 2422 final void applyUpdateLockStateLocked(ActivityRecord r) { 2423 // Modifications to the UpdateLock state are done on our handler, outside 2424 // the activity manager's locks. The new state is determined based on the 2425 // state *now* of the relevant activity record. The object is passed to 2426 // the handler solely for logging detail, not to be consulted/modified. 2427 final boolean nextState = r != null && r.immersive; 2428 mHandler.sendMessage( 2429 mHandler.obtainMessage(IMMERSIVE_MODE_LOCK_MSG, (nextState) ? 1 : 0, 0, r)); 2430 } 2431 2432 final void showAskCompatModeDialogLocked(ActivityRecord r) { 2433 Message msg = Message.obtain(); 2434 msg.what = SHOW_COMPAT_MODE_DIALOG_MSG; 2435 msg.obj = r.task.askedCompatMode ? null : r; 2436 mHandler.sendMessage(msg); 2437 } 2438 2439 private int updateLruProcessInternalLocked(ProcessRecord app, long now, int index, 2440 String what, Object obj, ProcessRecord srcApp) { 2441 app.lastActivityTime = now; 2442 2443 if (app.activities.size() > 0) { 2444 // Don't want to touch dependent processes that are hosting activities. 2445 return index; 2446 } 2447 2448 int lrui = mLruProcesses.lastIndexOf(app); 2449 if (lrui < 0) { 2450 Slog.wtf(TAG, "Adding dependent process " + app + " not on LRU list: " 2451 + what + " " + obj + " from " + srcApp); 2452 return index; 2453 } 2454 2455 if (lrui >= index) { 2456 // Don't want to cause this to move dependent processes *back* in the 2457 // list as if they were less frequently used. 2458 return index; 2459 } 2460 2461 if (lrui >= mLruProcessActivityStart) { 2462 // Don't want to touch dependent processes that are hosting activities. 2463 return index; 2464 } 2465 2466 mLruProcesses.remove(lrui); 2467 if (index > 0) { 2468 index--; 2469 } 2470 if (DEBUG_LRU) Slog.d(TAG, "Moving dep from " + lrui + " to " + index 2471 + " in LRU list: " + app); 2472 mLruProcesses.add(index, app); 2473 return index; 2474 } 2475 2476 final void removeLruProcessLocked(ProcessRecord app) { 2477 int lrui = mLruProcesses.lastIndexOf(app); 2478 if (lrui >= 0) { 2479 if (!app.killed) { 2480 Slog.wtfStack(TAG, "Removing process that hasn't been killed: " + app); 2481 Process.killProcessQuiet(app.pid); 2482 Process.killProcessGroup(app.info.uid, app.pid); 2483 } 2484 if (lrui <= mLruProcessActivityStart) { 2485 mLruProcessActivityStart--; 2486 } 2487 if (lrui <= mLruProcessServiceStart) { 2488 mLruProcessServiceStart--; 2489 } 2490 mLruProcesses.remove(lrui); 2491 } 2492 } 2493 2494 final void updateLruProcessLocked(ProcessRecord app, boolean activityChange, 2495 ProcessRecord client) { 2496 final boolean hasActivity = app.activities.size() > 0 || app.hasClientActivities 2497 || app.treatLikeActivity; 2498 final boolean hasService = false; // not impl yet. app.services.size() > 0; 2499 if (!activityChange && hasActivity) { 2500 // The process has activities, so we are only allowing activity-based adjustments 2501 // to move it. It should be kept in the front of the list with other 2502 // processes that have activities, and we don't want those to change their 2503 // order except due to activity operations. 2504 return; 2505 } 2506 2507 mLruSeq++; 2508 final long now = SystemClock.uptimeMillis(); 2509 app.lastActivityTime = now; 2510 2511 // First a quick reject: if the app is already at the position we will 2512 // put it, then there is nothing to do. 2513 if (hasActivity) { 2514 final int N = mLruProcesses.size(); 2515 if (N > 0 && mLruProcesses.get(N-1) == app) { 2516 if (DEBUG_LRU) Slog.d(TAG, "Not moving, already top activity: " + app); 2517 return; 2518 } 2519 } else { 2520 if (mLruProcessServiceStart > 0 2521 && mLruProcesses.get(mLruProcessServiceStart-1) == app) { 2522 if (DEBUG_LRU) Slog.d(TAG, "Not moving, already top other: " + app); 2523 return; 2524 } 2525 } 2526 2527 int lrui = mLruProcesses.lastIndexOf(app); 2528 2529 if (app.persistent && lrui >= 0) { 2530 // We don't care about the position of persistent processes, as long as 2531 // they are in the list. 2532 if (DEBUG_LRU) Slog.d(TAG, "Not moving, persistent: " + app); 2533 return; 2534 } 2535 2536 /* In progress: compute new position first, so we can avoid doing work 2537 if the process is not actually going to move. Not yet working. 2538 int addIndex; 2539 int nextIndex; 2540 boolean inActivity = false, inService = false; 2541 if (hasActivity) { 2542 // Process has activities, put it at the very tipsy-top. 2543 addIndex = mLruProcesses.size(); 2544 nextIndex = mLruProcessServiceStart; 2545 inActivity = true; 2546 } else if (hasService) { 2547 // Process has services, put it at the top of the service list. 2548 addIndex = mLruProcessActivityStart; 2549 nextIndex = mLruProcessServiceStart; 2550 inActivity = true; 2551 inService = true; 2552 } else { 2553 // Process not otherwise of interest, it goes to the top of the non-service area. 2554 addIndex = mLruProcessServiceStart; 2555 if (client != null) { 2556 int clientIndex = mLruProcesses.lastIndexOf(client); 2557 if (clientIndex < 0) Slog.d(TAG, "Unknown client " + client + " when updating " 2558 + app); 2559 if (clientIndex >= 0 && addIndex > clientIndex) { 2560 addIndex = clientIndex; 2561 } 2562 } 2563 nextIndex = addIndex > 0 ? addIndex-1 : addIndex; 2564 } 2565 2566 Slog.d(TAG, "Update LRU at " + lrui + " to " + addIndex + " (act=" 2567 + mLruProcessActivityStart + "): " + app); 2568 */ 2569 2570 if (lrui >= 0) { 2571 if (lrui < mLruProcessActivityStart) { 2572 mLruProcessActivityStart--; 2573 } 2574 if (lrui < mLruProcessServiceStart) { 2575 mLruProcessServiceStart--; 2576 } 2577 /* 2578 if (addIndex > lrui) { 2579 addIndex--; 2580 } 2581 if (nextIndex > lrui) { 2582 nextIndex--; 2583 } 2584 */ 2585 mLruProcesses.remove(lrui); 2586 } 2587 2588 /* 2589 mLruProcesses.add(addIndex, app); 2590 if (inActivity) { 2591 mLruProcessActivityStart++; 2592 } 2593 if (inService) { 2594 mLruProcessActivityStart++; 2595 } 2596 */ 2597 2598 int nextIndex; 2599 if (hasActivity) { 2600 final int N = mLruProcesses.size(); 2601 if (app.activities.size() == 0 && mLruProcessActivityStart < (N-1)) { 2602 // Process doesn't have activities, but has clients with 2603 // activities... move it up, but one below the top (the top 2604 // should always have a real activity). 2605 if (DEBUG_LRU) Slog.d(TAG, "Adding to second-top of LRU activity list: " + app); 2606 mLruProcesses.add(N-1, app); 2607 // To keep it from spamming the LRU list (by making a bunch of clients), 2608 // we will push down any other entries owned by the app. 2609 final int uid = app.info.uid; 2610 for (int i=N-2; i>mLruProcessActivityStart; i--) { 2611 ProcessRecord subProc = mLruProcesses.get(i); 2612 if (subProc.info.uid == uid) { 2613 // We want to push this one down the list. If the process after 2614 // it is for the same uid, however, don't do so, because we don't 2615 // want them internally to be re-ordered. 2616 if (mLruProcesses.get(i-1).info.uid != uid) { 2617 if (DEBUG_LRU) Slog.d(TAG, "Pushing uid " + uid + " swapping at " + i 2618 + ": " + mLruProcesses.get(i) + " : " + mLruProcesses.get(i-1)); 2619 ProcessRecord tmp = mLruProcesses.get(i); 2620 mLruProcesses.set(i, mLruProcesses.get(i-1)); 2621 mLruProcesses.set(i-1, tmp); 2622 i--; 2623 } 2624 } else { 2625 // A gap, we can stop here. 2626 break; 2627 } 2628 } 2629 } else { 2630 // Process has activities, put it at the very tipsy-top. 2631 if (DEBUG_LRU) Slog.d(TAG, "Adding to top of LRU activity list: " + app); 2632 mLruProcesses.add(app); 2633 } 2634 nextIndex = mLruProcessServiceStart; 2635 } else if (hasService) { 2636 // Process has services, put it at the top of the service list. 2637 if (DEBUG_LRU) Slog.d(TAG, "Adding to top of LRU service list: " + app); 2638 mLruProcesses.add(mLruProcessActivityStart, app); 2639 nextIndex = mLruProcessServiceStart; 2640 mLruProcessActivityStart++; 2641 } else { 2642 // Process not otherwise of interest, it goes to the top of the non-service area. 2643 int index = mLruProcessServiceStart; 2644 if (client != null) { 2645 // If there is a client, don't allow the process to be moved up higher 2646 // in the list than that client. 2647 int clientIndex = mLruProcesses.lastIndexOf(client); 2648 if (DEBUG_LRU && clientIndex < 0) Slog.d(TAG, "Unknown client " + client 2649 + " when updating " + app); 2650 if (clientIndex <= lrui) { 2651 // Don't allow the client index restriction to push it down farther in the 2652 // list than it already is. 2653 clientIndex = lrui; 2654 } 2655 if (clientIndex >= 0 && index > clientIndex) { 2656 index = clientIndex; 2657 } 2658 } 2659 if (DEBUG_LRU) Slog.d(TAG, "Adding at " + index + " of LRU list: " + app); 2660 mLruProcesses.add(index, app); 2661 nextIndex = index-1; 2662 mLruProcessActivityStart++; 2663 mLruProcessServiceStart++; 2664 } 2665 2666 // If the app is currently using a content provider or service, 2667 // bump those processes as well. 2668 for (int j=app.connections.size()-1; j>=0; j--) { 2669 ConnectionRecord cr = app.connections.valueAt(j); 2670 if (cr.binding != null && !cr.serviceDead && cr.binding.service != null 2671 && cr.binding.service.app != null 2672 && cr.binding.service.app.lruSeq != mLruSeq 2673 && !cr.binding.service.app.persistent) { 2674 nextIndex = updateLruProcessInternalLocked(cr.binding.service.app, now, nextIndex, 2675 "service connection", cr, app); 2676 } 2677 } 2678 for (int j=app.conProviders.size()-1; j>=0; j--) { 2679 ContentProviderRecord cpr = app.conProviders.get(j).provider; 2680 if (cpr.proc != null && cpr.proc.lruSeq != mLruSeq && !cpr.proc.persistent) { 2681 nextIndex = updateLruProcessInternalLocked(cpr.proc, now, nextIndex, 2682 "provider reference", cpr, app); 2683 } 2684 } 2685 } 2686 2687 final ProcessRecord getProcessRecordLocked(String processName, int uid, boolean keepIfLarge) { 2688 if (uid == Process.SYSTEM_UID) { 2689 // The system gets to run in any process. If there are multiple 2690 // processes with the same uid, just pick the first (this 2691 // should never happen). 2692 SparseArray<ProcessRecord> procs = mProcessNames.getMap().get(processName); 2693 if (procs == null) return null; 2694 final int procCount = procs.size(); 2695 for (int i = 0; i < procCount; i++) { 2696 final int procUid = procs.keyAt(i); 2697 if (UserHandle.isApp(procUid) || !UserHandle.isSameUser(procUid, uid)) { 2698 // Don't use an app process or different user process for system component. 2699 continue; 2700 } 2701 return procs.valueAt(i); 2702 } 2703 } 2704 ProcessRecord proc = mProcessNames.get(processName, uid); 2705 if (false && proc != null && !keepIfLarge 2706 && proc.setProcState >= ActivityManager.PROCESS_STATE_CACHED_EMPTY 2707 && proc.lastCachedPss >= 4000) { 2708 // Turn this condition on to cause killing to happen regularly, for testing. 2709 if (proc.baseProcessTracker != null) { 2710 proc.baseProcessTracker.reportCachedKill(proc.pkgList, proc.lastCachedPss); 2711 } 2712 proc.kill(Long.toString(proc.lastCachedPss) + "k from cached", true); 2713 } else if (proc != null && !keepIfLarge 2714 && mLastMemoryLevel > ProcessStats.ADJ_MEM_FACTOR_NORMAL 2715 && proc.setProcState >= ActivityManager.PROCESS_STATE_CACHED_EMPTY) { 2716 if (DEBUG_PSS) Slog.d(TAG, "May not keep " + proc + ": pss=" + proc.lastCachedPss); 2717 if (proc.lastCachedPss >= mProcessList.getCachedRestoreThresholdKb()) { 2718 if (proc.baseProcessTracker != null) { 2719 proc.baseProcessTracker.reportCachedKill(proc.pkgList, proc.lastCachedPss); 2720 } 2721 proc.kill(Long.toString(proc.lastCachedPss) + "k from cached", true); 2722 } 2723 } 2724 return proc; 2725 } 2726 2727 void ensurePackageDexOpt(String packageName) { 2728 IPackageManager pm = AppGlobals.getPackageManager(); 2729 try { 2730 if (pm.performDexOptIfNeeded(packageName, null /* instruction set */)) { 2731 mDidDexOpt = true; 2732 } 2733 } catch (RemoteException e) { 2734 } 2735 } 2736 2737 boolean isNextTransitionForward() { 2738 int transit = mWindowManager.getPendingAppTransition(); 2739 return transit == AppTransition.TRANSIT_ACTIVITY_OPEN 2740 || transit == AppTransition.TRANSIT_TASK_OPEN 2741 || transit == AppTransition.TRANSIT_TASK_TO_FRONT; 2742 } 2743 2744 int startIsolatedProcess(String entryPoint, String[] entryPointArgs, 2745 String processName, String abiOverride, int uid, Runnable crashHandler) { 2746 synchronized(this) { 2747 ApplicationInfo info = new ApplicationInfo(); 2748 // In general the ApplicationInfo.uid isn't neccesarily equal to ProcessRecord.uid. 2749 // For isolated processes, the former contains the parent's uid and the latter the 2750 // actual uid of the isolated process. 2751 // In the special case introduced by this method (which is, starting an isolated 2752 // process directly from the SystemServer without an actual parent app process) the 2753 // closest thing to a parent's uid is SYSTEM_UID. 2754 // The only important thing here is to keep AI.uid != PR.uid, in order to trigger 2755 // the |isolated| logic in the ProcessRecord constructor. 2756 info.uid = Process.SYSTEM_UID; 2757 info.processName = processName; 2758 info.className = entryPoint; 2759 info.packageName = "android"; 2760 ProcessRecord proc = startProcessLocked(processName, info /* info */, 2761 false /* knownToBeDead */, 0 /* intentFlags */, "" /* hostingType */, 2762 null /* hostingName */, true /* allowWhileBooting */, true /* isolated */, 2763 uid, true /* keepIfLarge */, abiOverride, entryPoint, entryPointArgs, 2764 crashHandler); 2765 return proc != null ? proc.pid : 0; 2766 } 2767 } 2768 2769 final ProcessRecord startProcessLocked(String processName, 2770 ApplicationInfo info, boolean knownToBeDead, int intentFlags, 2771 String hostingType, ComponentName hostingName, boolean allowWhileBooting, 2772 boolean isolated, boolean keepIfLarge) { 2773 return startProcessLocked(processName, info, knownToBeDead, intentFlags, hostingType, 2774 hostingName, allowWhileBooting, isolated, 0 /* isolatedUid */, keepIfLarge, 2775 null /* ABI override */, null /* entryPoint */, null /* entryPointArgs */, 2776 null /* crashHandler */); 2777 } 2778 2779 final ProcessRecord startProcessLocked(String processName, ApplicationInfo info, 2780 boolean knownToBeDead, int intentFlags, String hostingType, ComponentName hostingName, 2781 boolean allowWhileBooting, boolean isolated, int isolatedUid, boolean keepIfLarge, 2782 String abiOverride, String entryPoint, String[] entryPointArgs, Runnable crashHandler) { 2783 long startTime = SystemClock.elapsedRealtime(); 2784 ProcessRecord app; 2785 if (!isolated) { 2786 app = getProcessRecordLocked(processName, info.uid, keepIfLarge); 2787 checkTime(startTime, "startProcess: after getProcessRecord"); 2788 } else { 2789 // If this is an isolated process, it can't re-use an existing process. 2790 app = null; 2791 } 2792 // We don't have to do anything more if: 2793 // (1) There is an existing application record; and 2794 // (2) The caller doesn't think it is dead, OR there is no thread 2795 // object attached to it so we know it couldn't have crashed; and 2796 // (3) There is a pid assigned to it, so it is either starting or 2797 // already running. 2798 if (DEBUG_PROCESSES) Slog.v(TAG, "startProcess: name=" + processName 2799 + " app=" + app + " knownToBeDead=" + knownToBeDead 2800 + " thread=" + (app != null ? app.thread : null) 2801 + " pid=" + (app != null ? app.pid : -1)); 2802 if (app != null && app.pid > 0) { 2803 if (!knownToBeDead || app.thread == null) { 2804 // We already have the app running, or are waiting for it to 2805 // come up (we have a pid but not yet its thread), so keep it. 2806 if (DEBUG_PROCESSES) Slog.v(TAG, "App already running: " + app); 2807 // If this is a new package in the process, add the package to the list 2808 app.addPackage(info.packageName, info.versionCode, mProcessStats); 2809 checkTime(startTime, "startProcess: done, added package to proc"); 2810 return app; 2811 } 2812 2813 // An application record is attached to a previous process, 2814 // clean it up now. 2815 if (DEBUG_PROCESSES || DEBUG_CLEANUP) Slog.v(TAG, "App died: " + app); 2816 checkTime(startTime, "startProcess: bad proc running, killing"); 2817 Process.killProcessGroup(app.info.uid, app.pid); 2818 handleAppDiedLocked(app, true, true); 2819 checkTime(startTime, "startProcess: done killing old proc"); 2820 } 2821 2822 String hostingNameStr = hostingName != null 2823 ? hostingName.flattenToShortString() : null; 2824 2825 if (!isolated) { 2826 if ((intentFlags&Intent.FLAG_FROM_BACKGROUND) != 0) { 2827 // If we are in the background, then check to see if this process 2828 // is bad. If so, we will just silently fail. 2829 if (mBadProcesses.get(info.processName, info.uid) != null) { 2830 if (DEBUG_PROCESSES) Slog.v(TAG, "Bad process: " + info.uid 2831 + "/" + info.processName); 2832 return null; 2833 } 2834 } else { 2835 // When the user is explicitly starting a process, then clear its 2836 // crash count so that we won't make it bad until they see at 2837 // least one crash dialog again, and make the process good again 2838 // if it had been bad. 2839 if (DEBUG_PROCESSES) Slog.v(TAG, "Clearing bad process: " + info.uid 2840 + "/" + info.processName); 2841 mProcessCrashTimes.remove(info.processName, info.uid); 2842 if (mBadProcesses.get(info.processName, info.uid) != null) { 2843 EventLog.writeEvent(EventLogTags.AM_PROC_GOOD, 2844 UserHandle.getUserId(info.uid), info.uid, 2845 info.processName); 2846 mBadProcesses.remove(info.processName, info.uid); 2847 if (app != null) { 2848 app.bad = false; 2849 } 2850 } 2851 } 2852 } 2853 2854 if (app == null) { 2855 checkTime(startTime, "startProcess: creating new process record"); 2856 app = newProcessRecordLocked(info, processName, isolated, isolatedUid); 2857 if (app == null) { 2858 Slog.w(TAG, "Failed making new process record for " 2859 + processName + "/" + info.uid + " isolated=" + isolated); 2860 return null; 2861 } 2862 app.crashHandler = crashHandler; 2863 mProcessNames.put(processName, app.uid, app); 2864 if (isolated) { 2865 mIsolatedProcesses.put(app.uid, app); 2866 } 2867 checkTime(startTime, "startProcess: done creating new process record"); 2868 } else { 2869 // If this is a new package in the process, add the package to the list 2870 app.addPackage(info.packageName, info.versionCode, mProcessStats); 2871 checkTime(startTime, "startProcess: added package to existing proc"); 2872 } 2873 2874 // If the system is not ready yet, then hold off on starting this 2875 // process until it is. 2876 if (!mProcessesReady 2877 && !isAllowedWhileBooting(info) 2878 && !allowWhileBooting) { 2879 if (!mProcessesOnHold.contains(app)) { 2880 mProcessesOnHold.add(app); 2881 } 2882 if (DEBUG_PROCESSES) Slog.v(TAG, "System not ready, putting on hold: " + app); 2883 checkTime(startTime, "startProcess: returning with proc on hold"); 2884 return app; 2885 } 2886 2887 checkTime(startTime, "startProcess: stepping in to startProcess"); 2888 startProcessLocked( 2889 app, hostingType, hostingNameStr, abiOverride, entryPoint, entryPointArgs); 2890 checkTime(startTime, "startProcess: done starting proc!"); 2891 return (app.pid != 0) ? app : null; 2892 } 2893 2894 boolean isAllowedWhileBooting(ApplicationInfo ai) { 2895 return (ai.flags&ApplicationInfo.FLAG_PERSISTENT) != 0; 2896 } 2897 2898 private final void startProcessLocked(ProcessRecord app, 2899 String hostingType, String hostingNameStr) { 2900 startProcessLocked(app, hostingType, hostingNameStr, null /* abiOverride */, 2901 null /* entryPoint */, null /* entryPointArgs */); 2902 } 2903 2904 private final void startProcessLocked(ProcessRecord app, String hostingType, 2905 String hostingNameStr, String abiOverride, String entryPoint, String[] entryPointArgs) { 2906 long startTime = SystemClock.elapsedRealtime(); 2907 if (app.pid > 0 && app.pid != MY_PID) { 2908 checkTime(startTime, "startProcess: removing from pids map"); 2909 synchronized (mPidsSelfLocked) { 2910 mPidsSelfLocked.remove(app.pid); 2911 mHandler.removeMessages(PROC_START_TIMEOUT_MSG, app); 2912 } 2913 checkTime(startTime, "startProcess: done removing from pids map"); 2914 app.setPid(0); 2915 } 2916 2917 if (DEBUG_PROCESSES && mProcessesOnHold.contains(app)) Slog.v(TAG, 2918 "startProcessLocked removing on hold: " + app); 2919 mProcessesOnHold.remove(app); 2920 2921 checkTime(startTime, "startProcess: starting to update cpu stats"); 2922 updateCpuStats(); 2923 checkTime(startTime, "startProcess: done updating cpu stats"); 2924 2925 try { 2926 int uid = app.uid; 2927 2928 int[] gids = null; 2929 int mountExternal = Zygote.MOUNT_EXTERNAL_NONE; 2930 if (!app.isolated) { 2931 int[] permGids = null; 2932 try { 2933 checkTime(startTime, "startProcess: getting gids from package manager"); 2934 final PackageManager pm = mContext.getPackageManager(); 2935 permGids = pm.getPackageGids(app.info.packageName); 2936 2937 if (Environment.isExternalStorageEmulated()) { 2938 checkTime(startTime, "startProcess: checking external storage perm"); 2939 if (pm.checkPermission( 2940 android.Manifest.permission.ACCESS_ALL_EXTERNAL_STORAGE, 2941 app.info.packageName) == PERMISSION_GRANTED) { 2942 mountExternal = Zygote.MOUNT_EXTERNAL_MULTIUSER_ALL; 2943 } else { 2944 mountExternal = Zygote.MOUNT_EXTERNAL_MULTIUSER; 2945 } 2946 } 2947 } catch (PackageManager.NameNotFoundException e) { 2948 Slog.w(TAG, "Unable to retrieve gids", e); 2949 } 2950 2951 /* 2952 * Add shared application and profile GIDs so applications can share some 2953 * resources like shared libraries and access user-wide resources 2954 */ 2955 if (permGids == null) { 2956 gids = new int[2]; 2957 } else { 2958 gids = new int[permGids.length + 2]; 2959 System.arraycopy(permGids, 0, gids, 2, permGids.length); 2960 } 2961 gids[0] = UserHandle.getSharedAppGid(UserHandle.getAppId(uid)); 2962 gids[1] = UserHandle.getUserGid(UserHandle.getUserId(uid)); 2963 } 2964 checkTime(startTime, "startProcess: building args"); 2965 if (mFactoryTest != FactoryTest.FACTORY_TEST_OFF) { 2966 if (mFactoryTest == FactoryTest.FACTORY_TEST_LOW_LEVEL 2967 && mTopComponent != null 2968 && app.processName.equals(mTopComponent.getPackageName())) { 2969 uid = 0; 2970 } 2971 if (mFactoryTest == FactoryTest.FACTORY_TEST_HIGH_LEVEL 2972 && (app.info.flags&ApplicationInfo.FLAG_FACTORY_TEST) != 0) { 2973 uid = 0; 2974 } 2975 } 2976 int debugFlags = 0; 2977 if ((app.info.flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0) { 2978 debugFlags |= Zygote.DEBUG_ENABLE_DEBUGGER; 2979 // Also turn on CheckJNI for debuggable apps. It's quite 2980 // awkward to turn on otherwise. 2981 debugFlags |= Zygote.DEBUG_ENABLE_CHECKJNI; 2982 } 2983 // Run the app in safe mode if its manifest requests so or the 2984 // system is booted in safe mode. 2985 if ((app.info.flags & ApplicationInfo.FLAG_VM_SAFE_MODE) != 0 || 2986 mSafeMode == true) { 2987 debugFlags |= Zygote.DEBUG_ENABLE_SAFEMODE; 2988 } 2989 if ("1".equals(SystemProperties.get("debug.checkjni"))) { 2990 debugFlags |= Zygote.DEBUG_ENABLE_CHECKJNI; 2991 } 2992 if ("1".equals(SystemProperties.get("debug.jni.logging"))) { 2993 debugFlags |= Zygote.DEBUG_ENABLE_JNI_LOGGING; 2994 } 2995 if ("1".equals(SystemProperties.get("debug.assert"))) { 2996 debugFlags |= Zygote.DEBUG_ENABLE_ASSERT; 2997 } 2998 2999 String requiredAbi = (abiOverride != null) ? abiOverride : app.info.primaryCpuAbi; 3000 if (requiredAbi == null) { 3001 requiredAbi = Build.SUPPORTED_ABIS[0]; 3002 } 3003 3004 String instructionSet = null; 3005 if (app.info.primaryCpuAbi != null) { 3006 instructionSet = VMRuntime.getInstructionSet(app.info.primaryCpuAbi); 3007 } 3008 3009 app.gids = gids; 3010 app.requiredAbi = requiredAbi; 3011 app.instructionSet = instructionSet; 3012 3013 // Start the process. It will either succeed and return a result containing 3014 // the PID of the new process, or else throw a RuntimeException. 3015 boolean isActivityProcess = (entryPoint == null); 3016 if (entryPoint == null) entryPoint = "android.app.ActivityThread"; 3017 checkTime(startTime, "startProcess: asking zygote to start proc"); 3018 Process.ProcessStartResult startResult = Process.start(entryPoint, 3019 app.processName, uid, uid, gids, debugFlags, mountExternal, 3020 app.info.targetSdkVersion, app.info.seinfo, requiredAbi, instructionSet, 3021 app.info.dataDir, entryPointArgs); 3022 checkTime(startTime, "startProcess: returned from zygote!"); 3023 3024 if (app.isolated) { 3025 mBatteryStatsService.addIsolatedUid(app.uid, app.info.uid); 3026 } 3027 mBatteryStatsService.noteProcessStart(app.processName, app.info.uid); 3028 checkTime(startTime, "startProcess: done updating battery stats"); 3029 3030 EventLog.writeEvent(EventLogTags.AM_PROC_START, 3031 UserHandle.getUserId(uid), startResult.pid, uid, 3032 app.processName, hostingType, 3033 hostingNameStr != null ? hostingNameStr : ""); 3034 3035 if (app.persistent) { 3036 Watchdog.getInstance().processStarted(app.processName, startResult.pid); 3037 } 3038 3039 checkTime(startTime, "startProcess: building log message"); 3040 StringBuilder buf = mStringBuilder; 3041 buf.setLength(0); 3042 buf.append("Start proc "); 3043 buf.append(startResult.pid); 3044 buf.append(':'); 3045 buf.append(app.processName); 3046 buf.append('/'); 3047 UserHandle.formatUid(buf, uid); 3048 if (!isActivityProcess) { 3049 buf.append(" ["); 3050 buf.append(entryPoint); 3051 buf.append("]"); 3052 } 3053 buf.append(" for "); 3054 buf.append(hostingType); 3055 if (hostingNameStr != null) { 3056 buf.append(" "); 3057 buf.append(hostingNameStr); 3058 } 3059 Slog.i(TAG, buf.toString()); 3060 app.setPid(startResult.pid); 3061 app.usingWrapper = startResult.usingWrapper; 3062 app.removed = false; 3063 app.killed = false; 3064 app.killedByAm = false; 3065 checkTime(startTime, "startProcess: starting to update pids map"); 3066 synchronized (mPidsSelfLocked) { 3067 this.mPidsSelfLocked.put(startResult.pid, app); 3068 if (isActivityProcess) { 3069 Message msg = mHandler.obtainMessage(PROC_START_TIMEOUT_MSG); 3070 msg.obj = app; 3071 mHandler.sendMessageDelayed(msg, startResult.usingWrapper 3072 ? PROC_START_TIMEOUT_WITH_WRAPPER : PROC_START_TIMEOUT); 3073 } 3074 } 3075 checkTime(startTime, "startProcess: done updating pids map"); 3076 } catch (RuntimeException e) { 3077 // XXX do better error recovery. 3078 app.setPid(0); 3079 mBatteryStatsService.noteProcessFinish(app.processName, app.info.uid); 3080 if (app.isolated) { 3081 mBatteryStatsService.removeIsolatedUid(app.uid, app.info.uid); 3082 } 3083 Slog.e(TAG, "Failure starting process " + app.processName, e); 3084 } 3085 } 3086 3087 void updateUsageStats(ActivityRecord component, boolean resumed) { 3088 if (DEBUG_SWITCH) Slog.d(TAG, "updateUsageStats: comp=" + component + "res=" + resumed); 3089 final BatteryStatsImpl stats = mBatteryStatsService.getActiveStatistics(); 3090 if (resumed) { 3091 if (mUsageStatsService != null) { 3092 mUsageStatsService.reportEvent(component.realActivity, component.userId, 3093 UsageEvents.Event.MOVE_TO_FOREGROUND); 3094 } 3095 synchronized (stats) { 3096 stats.noteActivityResumedLocked(component.app.uid); 3097 } 3098 } else { 3099 if (mUsageStatsService != null) { 3100 mUsageStatsService.reportEvent(component.realActivity, component.userId, 3101 UsageEvents.Event.MOVE_TO_BACKGROUND); 3102 } 3103 synchronized (stats) { 3104 stats.noteActivityPausedLocked(component.app.uid); 3105 } 3106 } 3107 } 3108 3109 Intent getHomeIntent() { 3110 Intent intent = new Intent(mTopAction, mTopData != null ? Uri.parse(mTopData) : null); 3111 intent.setComponent(mTopComponent); 3112 if (mFactoryTest != FactoryTest.FACTORY_TEST_LOW_LEVEL) { 3113 intent.addCategory(Intent.CATEGORY_HOME); 3114 } 3115 return intent; 3116 } 3117 3118 boolean startHomeActivityLocked(int userId, String reason) { 3119 if (mFactoryTest == FactoryTest.FACTORY_TEST_LOW_LEVEL 3120 && mTopAction == null) { 3121 // We are running in factory test mode, but unable to find 3122 // the factory test app, so just sit around displaying the 3123 // error message and don't try to start anything. 3124 return false; 3125 } 3126 Intent intent = getHomeIntent(); 3127 ActivityInfo aInfo = 3128 resolveActivityInfo(intent, STOCK_PM_FLAGS, userId); 3129 if (aInfo != null) { 3130 intent.setComponent(new ComponentName( 3131 aInfo.applicationInfo.packageName, aInfo.name)); 3132 // Don't do this if the home app is currently being 3133 // instrumented. 3134 aInfo = new ActivityInfo(aInfo); 3135 aInfo.applicationInfo = getAppInfoForUser(aInfo.applicationInfo, userId); 3136 ProcessRecord app = getProcessRecordLocked(aInfo.processName, 3137 aInfo.applicationInfo.uid, true); 3138 if (app == null || app.instrumentationClass == null) { 3139 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); 3140 mStackSupervisor.startHomeActivity(intent, aInfo, reason); 3141 } 3142 } 3143 3144 return true; 3145 } 3146 3147 private ActivityInfo resolveActivityInfo(Intent intent, int flags, int userId) { 3148 ActivityInfo ai = null; 3149 ComponentName comp = intent.getComponent(); 3150 try { 3151 if (comp != null) { 3152 ai = AppGlobals.getPackageManager().getActivityInfo(comp, flags, userId); 3153 } else { 3154 ResolveInfo info = AppGlobals.getPackageManager().resolveIntent( 3155 intent, 3156 intent.resolveTypeIfNeeded(mContext.getContentResolver()), 3157 flags, userId); 3158 3159 if (info != null) { 3160 ai = info.activityInfo; 3161 } 3162 } 3163 } catch (RemoteException e) { 3164 // ignore 3165 } 3166 3167 return ai; 3168 } 3169 3170 /** 3171 * Starts the "new version setup screen" if appropriate. 3172 */ 3173 void startSetupActivityLocked() { 3174 // Only do this once per boot. 3175 if (mCheckedForSetup) { 3176 return; 3177 } 3178 3179 // We will show this screen if the current one is a different 3180 // version than the last one shown, and we are not running in 3181 // low-level factory test mode. 3182 final ContentResolver resolver = mContext.getContentResolver(); 3183 if (mFactoryTest != FactoryTest.FACTORY_TEST_LOW_LEVEL && 3184 Settings.Global.getInt(resolver, 3185 Settings.Global.DEVICE_PROVISIONED, 0) != 0) { 3186 mCheckedForSetup = true; 3187 3188 // See if we should be showing the platform update setup UI. 3189 Intent intent = new Intent(Intent.ACTION_UPGRADE_SETUP); 3190 List<ResolveInfo> ris = mContext.getPackageManager() 3191 .queryIntentActivities(intent, PackageManager.GET_META_DATA); 3192 3193 // We don't allow third party apps to replace this. 3194 ResolveInfo ri = null; 3195 for (int i=0; ris != null && i<ris.size(); i++) { 3196 if ((ris.get(i).activityInfo.applicationInfo.flags 3197 & ApplicationInfo.FLAG_SYSTEM) != 0) { 3198 ri = ris.get(i); 3199 break; 3200 } 3201 } 3202 3203 if (ri != null) { 3204 String vers = ri.activityInfo.metaData != null 3205 ? ri.activityInfo.metaData.getString(Intent.METADATA_SETUP_VERSION) 3206 : null; 3207 if (vers == null && ri.activityInfo.applicationInfo.metaData != null) { 3208 vers = ri.activityInfo.applicationInfo.metaData.getString( 3209 Intent.METADATA_SETUP_VERSION); 3210 } 3211 String lastVers = Settings.Secure.getString( 3212 resolver, Settings.Secure.LAST_SETUP_SHOWN); 3213 if (vers != null && !vers.equals(lastVers)) { 3214 intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 3215 intent.setComponent(new ComponentName( 3216 ri.activityInfo.packageName, ri.activityInfo.name)); 3217 mStackSupervisor.startActivityLocked(null, intent, null, ri.activityInfo, 3218 null, null, null, null, 0, 0, 0, null, 0, 0, 0, null, false, null, null, 3219 null); 3220 } 3221 } 3222 } 3223 } 3224 3225 CompatibilityInfo compatibilityInfoForPackageLocked(ApplicationInfo ai) { 3226 return mCompatModePackages.compatibilityInfoForPackageLocked(ai); 3227 } 3228 3229 void enforceNotIsolatedCaller(String caller) { 3230 if (UserHandle.isIsolated(Binder.getCallingUid())) { 3231 throw new SecurityException("Isolated process not allowed to call " + caller); 3232 } 3233 } 3234 3235 void enforceShellRestriction(String restriction, int userHandle) { 3236 if (Binder.getCallingUid() == Process.SHELL_UID) { 3237 if (userHandle < 0 3238 || mUserManager.hasUserRestriction(restriction, userHandle)) { 3239 throw new SecurityException("Shell does not have permission to access user " 3240 + userHandle); 3241 } 3242 } 3243 } 3244 3245 @Override 3246 public int getFrontActivityScreenCompatMode() { 3247 enforceNotIsolatedCaller("getFrontActivityScreenCompatMode"); 3248 synchronized (this) { 3249 return mCompatModePackages.getFrontActivityScreenCompatModeLocked(); 3250 } 3251 } 3252 3253 @Override 3254 public void setFrontActivityScreenCompatMode(int mode) { 3255 enforceCallingPermission(android.Manifest.permission.SET_SCREEN_COMPATIBILITY, 3256 "setFrontActivityScreenCompatMode"); 3257 synchronized (this) { 3258 mCompatModePackages.setFrontActivityScreenCompatModeLocked(mode); 3259 } 3260 } 3261 3262 @Override 3263 public int getPackageScreenCompatMode(String packageName) { 3264 enforceNotIsolatedCaller("getPackageScreenCompatMode"); 3265 synchronized (this) { 3266 return mCompatModePackages.getPackageScreenCompatModeLocked(packageName); 3267 } 3268 } 3269 3270 @Override 3271 public void setPackageScreenCompatMode(String packageName, int mode) { 3272 enforceCallingPermission(android.Manifest.permission.SET_SCREEN_COMPATIBILITY, 3273 "setPackageScreenCompatMode"); 3274 synchronized (this) { 3275 mCompatModePackages.setPackageScreenCompatModeLocked(packageName, mode); 3276 } 3277 } 3278 3279 @Override 3280 public boolean getPackageAskScreenCompat(String packageName) { 3281 enforceNotIsolatedCaller("getPackageAskScreenCompat"); 3282 synchronized (this) { 3283 return mCompatModePackages.getPackageAskCompatModeLocked(packageName); 3284 } 3285 } 3286 3287 @Override 3288 public void setPackageAskScreenCompat(String packageName, boolean ask) { 3289 enforceCallingPermission(android.Manifest.permission.SET_SCREEN_COMPATIBILITY, 3290 "setPackageAskScreenCompat"); 3291 synchronized (this) { 3292 mCompatModePackages.setPackageAskCompatModeLocked(packageName, ask); 3293 } 3294 } 3295 3296 private void dispatchProcessesChanged() { 3297 int N; 3298 synchronized (this) { 3299 N = mPendingProcessChanges.size(); 3300 if (mActiveProcessChanges.length < N) { 3301 mActiveProcessChanges = new ProcessChangeItem[N]; 3302 } 3303 mPendingProcessChanges.toArray(mActiveProcessChanges); 3304 mAvailProcessChanges.addAll(mPendingProcessChanges); 3305 mPendingProcessChanges.clear(); 3306 if (DEBUG_PROCESS_OBSERVERS) Slog.i(TAG, "*** Delivering " + N + " process changes"); 3307 } 3308 3309 int i = mProcessObservers.beginBroadcast(); 3310 while (i > 0) { 3311 i--; 3312 final IProcessObserver observer = mProcessObservers.getBroadcastItem(i); 3313 if (observer != null) { 3314 try { 3315 for (int j=0; j<N; j++) { 3316 ProcessChangeItem item = mActiveProcessChanges[j]; 3317 if ((item.changes&ProcessChangeItem.CHANGE_ACTIVITIES) != 0) { 3318 if (DEBUG_PROCESS_OBSERVERS) Slog.i(TAG, "ACTIVITIES CHANGED pid=" 3319 + item.pid + " uid=" + item.uid + ": " 3320 + item.foregroundActivities); 3321 observer.onForegroundActivitiesChanged(item.pid, item.uid, 3322 item.foregroundActivities); 3323 } 3324 if ((item.changes&ProcessChangeItem.CHANGE_PROCESS_STATE) != 0) { 3325 if (DEBUG_PROCESS_OBSERVERS) Slog.i(TAG, "PROCSTATE CHANGED pid=" 3326 + item.pid + " uid=" + item.uid + ": " + item.processState); 3327 observer.onProcessStateChanged(item.pid, item.uid, item.processState); 3328 } 3329 } 3330 } catch (RemoteException e) { 3331 } 3332 } 3333 } 3334 mProcessObservers.finishBroadcast(); 3335 } 3336 3337 private void dispatchProcessDied(int pid, int uid) { 3338 int i = mProcessObservers.beginBroadcast(); 3339 while (i > 0) { 3340 i--; 3341 final IProcessObserver observer = mProcessObservers.getBroadcastItem(i); 3342 if (observer != null) { 3343 try { 3344 observer.onProcessDied(pid, uid); 3345 } catch (RemoteException e) { 3346 } 3347 } 3348 } 3349 mProcessObservers.finishBroadcast(); 3350 } 3351 3352 @Override 3353 public final int startActivity(IApplicationThread caller, String callingPackage, 3354 Intent intent, String resolvedType, IBinder resultTo, String resultWho, int requestCode, 3355 int startFlags, ProfilerInfo profilerInfo, Bundle options) { 3356 return startActivityAsUser(caller, callingPackage, intent, resolvedType, resultTo, 3357 resultWho, requestCode, startFlags, profilerInfo, options, 3358 UserHandle.getCallingUserId()); 3359 } 3360 3361 @Override 3362 public final int startActivityAsUser(IApplicationThread caller, String callingPackage, 3363 Intent intent, String resolvedType, IBinder resultTo, String resultWho, int requestCode, 3364 int startFlags, ProfilerInfo profilerInfo, Bundle options, int userId) { 3365 enforceNotIsolatedCaller("startActivity"); 3366 userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), userId, 3367 false, ALLOW_FULL_ONLY, "startActivity", null); 3368 // TODO: Switch to user app stacks here. 3369 return mStackSupervisor.startActivityMayWait(caller, -1, callingPackage, intent, 3370 resolvedType, null, null, resultTo, resultWho, requestCode, startFlags, 3371 profilerInfo, null, null, options, userId, null, null); 3372 } 3373 3374 @Override 3375 public final int startActivityAsCaller(IApplicationThread caller, String callingPackage, 3376 Intent intent, String resolvedType, IBinder resultTo, String resultWho, int requestCode, 3377 int startFlags, ProfilerInfo profilerInfo, Bundle options, int userId) { 3378 3379 // This is very dangerous -- it allows you to perform a start activity (including 3380 // permission grants) as any app that may launch one of your own activities. So 3381 // we will only allow this to be done from activities that are part of the core framework, 3382 // and then only when they are running as the system. 3383 final ActivityRecord sourceRecord; 3384 final int targetUid; 3385 final String targetPackage; 3386 synchronized (this) { 3387 if (resultTo == null) { 3388 throw new SecurityException("Must be called from an activity"); 3389 } 3390 sourceRecord = mStackSupervisor.isInAnyStackLocked(resultTo); 3391 if (sourceRecord == null) { 3392 throw new SecurityException("Called with bad activity token: " + resultTo); 3393 } 3394 if (!sourceRecord.info.packageName.equals("android")) { 3395 throw new SecurityException( 3396 "Must be called from an activity that is declared in the android package"); 3397 } 3398 if (sourceRecord.app == null) { 3399 throw new SecurityException("Called without a process attached to activity"); 3400 } 3401 if (UserHandle.getAppId(sourceRecord.app.uid) != Process.SYSTEM_UID) { 3402 // This is still okay, as long as this activity is running under the 3403 // uid of the original calling activity. 3404 if (sourceRecord.app.uid != sourceRecord.launchedFromUid) { 3405 throw new SecurityException( 3406 "Calling activity in uid " + sourceRecord.app.uid 3407 + " must be system uid or original calling uid " 3408 + sourceRecord.launchedFromUid); 3409 } 3410 } 3411 targetUid = sourceRecord.launchedFromUid; 3412 targetPackage = sourceRecord.launchedFromPackage; 3413 } 3414 3415 if (userId == UserHandle.USER_NULL) { 3416 userId = UserHandle.getUserId(sourceRecord.app.uid); 3417 } 3418 3419 // TODO: Switch to user app stacks here. 3420 try { 3421 int ret = mStackSupervisor.startActivityMayWait(null, targetUid, targetPackage, intent, 3422 resolvedType, null, null, resultTo, resultWho, requestCode, startFlags, null, 3423 null, null, options, userId, null, null); 3424 return ret; 3425 } catch (SecurityException e) { 3426 // XXX need to figure out how to propagate to original app. 3427 // A SecurityException here is generally actually a fault of the original 3428 // calling activity (such as a fairly granting permissions), so propagate it 3429 // back to them. 3430 /* 3431 StringBuilder msg = new StringBuilder(); 3432 msg.append("While launching"); 3433 msg.append(intent.toString()); 3434 msg.append(": "); 3435 msg.append(e.getMessage()); 3436 */ 3437 throw e; 3438 } 3439 } 3440 3441 @Override 3442 public final WaitResult startActivityAndWait(IApplicationThread caller, String callingPackage, 3443 Intent intent, String resolvedType, IBinder resultTo, String resultWho, int requestCode, 3444 int startFlags, ProfilerInfo profilerInfo, Bundle options, int userId) { 3445 enforceNotIsolatedCaller("startActivityAndWait"); 3446 userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), userId, 3447 false, ALLOW_FULL_ONLY, "startActivityAndWait", null); 3448 WaitResult res = new WaitResult(); 3449 // TODO: Switch to user app stacks here. 3450 mStackSupervisor.startActivityMayWait(caller, -1, callingPackage, intent, resolvedType, 3451 null, null, resultTo, resultWho, requestCode, startFlags, profilerInfo, res, null, 3452 options, userId, null, null); 3453 return res; 3454 } 3455 3456 @Override 3457 public final int startActivityWithConfig(IApplicationThread caller, String callingPackage, 3458 Intent intent, String resolvedType, IBinder resultTo, String resultWho, int requestCode, 3459 int startFlags, Configuration config, Bundle options, int userId) { 3460 enforceNotIsolatedCaller("startActivityWithConfig"); 3461 userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), userId, 3462 false, ALLOW_FULL_ONLY, "startActivityWithConfig", null); 3463 // TODO: Switch to user app stacks here. 3464 int ret = mStackSupervisor.startActivityMayWait(caller, -1, callingPackage, intent, 3465 resolvedType, null, null, resultTo, resultWho, requestCode, startFlags, 3466 null, null, config, options, userId, null, null); 3467 return ret; 3468 } 3469 3470 @Override 3471 public int startActivityIntentSender(IApplicationThread caller, 3472 IntentSender intent, Intent fillInIntent, String resolvedType, 3473 IBinder resultTo, String resultWho, int requestCode, 3474 int flagsMask, int flagsValues, Bundle options) { 3475 enforceNotIsolatedCaller("startActivityIntentSender"); 3476 // Refuse possible leaked file descriptors 3477 if (fillInIntent != null && fillInIntent.hasFileDescriptors()) { 3478 throw new IllegalArgumentException("File descriptors passed in Intent"); 3479 } 3480 3481 IIntentSender sender = intent.getTarget(); 3482 if (!(sender instanceof PendingIntentRecord)) { 3483 throw new IllegalArgumentException("Bad PendingIntent object"); 3484 } 3485 3486 PendingIntentRecord pir = (PendingIntentRecord)sender; 3487 3488 synchronized (this) { 3489 // If this is coming from the currently resumed activity, it is 3490 // effectively saying that app switches are allowed at this point. 3491 final ActivityStack stack = getFocusedStack(); 3492 if (stack.mResumedActivity != null && 3493 stack.mResumedActivity.info.applicationInfo.uid == Binder.getCallingUid()) { 3494 mAppSwitchesAllowedTime = 0; 3495 } 3496 } 3497 int ret = pir.sendInner(0, fillInIntent, resolvedType, null, null, 3498 resultTo, resultWho, requestCode, flagsMask, flagsValues, options, null); 3499 return ret; 3500 } 3501 3502 @Override 3503 public int startVoiceActivity(String callingPackage, int callingPid, int callingUid, 3504 Intent intent, String resolvedType, IVoiceInteractionSession session, 3505 IVoiceInteractor interactor, int startFlags, ProfilerInfo profilerInfo, 3506 Bundle options, int userId) { 3507 if (checkCallingPermission(Manifest.permission.BIND_VOICE_INTERACTION) 3508 != PackageManager.PERMISSION_GRANTED) { 3509 String msg = "Permission Denial: startVoiceActivity() from pid=" 3510 + Binder.getCallingPid() 3511 + ", uid=" + Binder.getCallingUid() 3512 + " requires " + android.Manifest.permission.BIND_VOICE_INTERACTION; 3513 Slog.w(TAG, msg); 3514 throw new SecurityException(msg); 3515 } 3516 if (session == null || interactor == null) { 3517 throw new NullPointerException("null session or interactor"); 3518 } 3519 userId = handleIncomingUser(callingPid, callingUid, userId, 3520 false, ALLOW_FULL_ONLY, "startVoiceActivity", null); 3521 // TODO: Switch to user app stacks here. 3522 return mStackSupervisor.startActivityMayWait(null, callingUid, callingPackage, intent, 3523 resolvedType, session, interactor, null, null, 0, startFlags, profilerInfo, null, 3524 null, options, userId, null, null); 3525 } 3526 3527 @Override 3528 public boolean startNextMatchingActivity(IBinder callingActivity, 3529 Intent intent, Bundle options) { 3530 // Refuse possible leaked file descriptors 3531 if (intent != null && intent.hasFileDescriptors() == true) { 3532 throw new IllegalArgumentException("File descriptors passed in Intent"); 3533 } 3534 3535 synchronized (this) { 3536 final ActivityRecord r = ActivityRecord.isInStackLocked(callingActivity); 3537 if (r == null) { 3538 ActivityOptions.abort(options); 3539 return false; 3540 } 3541 if (r.app == null || r.app.thread == null) { 3542 // The caller is not running... d'oh! 3543 ActivityOptions.abort(options); 3544 return false; 3545 } 3546 intent = new Intent(intent); 3547 // The caller is not allowed to change the data. 3548 intent.setDataAndType(r.intent.getData(), r.intent.getType()); 3549 // And we are resetting to find the next component... 3550 intent.setComponent(null); 3551 3552 final boolean debug = ((intent.getFlags() & Intent.FLAG_DEBUG_LOG_RESOLUTION) != 0); 3553 3554 ActivityInfo aInfo = null; 3555 try { 3556 List<ResolveInfo> resolves = 3557 AppGlobals.getPackageManager().queryIntentActivities( 3558 intent, r.resolvedType, 3559 PackageManager.MATCH_DEFAULT_ONLY | STOCK_PM_FLAGS, 3560 UserHandle.getCallingUserId()); 3561 3562 // Look for the original activity in the list... 3563 final int N = resolves != null ? resolves.size() : 0; 3564 for (int i=0; i<N; i++) { 3565 ResolveInfo rInfo = resolves.get(i); 3566 if (rInfo.activityInfo.packageName.equals(r.packageName) 3567 && rInfo.activityInfo.name.equals(r.info.name)) { 3568 // We found the current one... the next matching is 3569 // after it. 3570 i++; 3571 if (i<N) { 3572 aInfo = resolves.get(i).activityInfo; 3573 } 3574 if (debug) { 3575 Slog.v(TAG, "Next matching activity: found current " + r.packageName 3576 + "/" + r.info.name); 3577 Slog.v(TAG, "Next matching activity: next is " + aInfo.packageName 3578 + "/" + aInfo.name); 3579 } 3580 break; 3581 } 3582 } 3583 } catch (RemoteException e) { 3584 } 3585 3586 if (aInfo == null) { 3587 // Nobody who is next! 3588 ActivityOptions.abort(options); 3589 if (debug) Slog.d(TAG, "Next matching activity: nothing found"); 3590 return false; 3591 } 3592 3593 intent.setComponent(new ComponentName( 3594 aInfo.applicationInfo.packageName, aInfo.name)); 3595 intent.setFlags(intent.getFlags()&~( 3596 Intent.FLAG_ACTIVITY_FORWARD_RESULT| 3597 Intent.FLAG_ACTIVITY_CLEAR_TOP| 3598 Intent.FLAG_ACTIVITY_MULTIPLE_TASK| 3599 Intent.FLAG_ACTIVITY_NEW_TASK)); 3600 3601 // Okay now we need to start the new activity, replacing the 3602 // currently running activity. This is a little tricky because 3603 // we want to start the new one as if the current one is finished, 3604 // but not finish the current one first so that there is no flicker. 3605 // And thus... 3606 final boolean wasFinishing = r.finishing; 3607 r.finishing = true; 3608 3609 // Propagate reply information over to the new activity. 3610 final ActivityRecord resultTo = r.resultTo; 3611 final String resultWho = r.resultWho; 3612 final int requestCode = r.requestCode; 3613 r.resultTo = null; 3614 if (resultTo != null) { 3615 resultTo.removeResultsLocked(r, resultWho, requestCode); 3616 } 3617 3618 final long origId = Binder.clearCallingIdentity(); 3619 int res = mStackSupervisor.startActivityLocked(r.app.thread, intent, 3620 r.resolvedType, aInfo, null, null, resultTo != null ? resultTo.appToken : null, 3621 resultWho, requestCode, -1, r.launchedFromUid, r.launchedFromPackage, 3622 -1, r.launchedFromUid, 0, options, false, null, null, null); 3623 Binder.restoreCallingIdentity(origId); 3624 3625 r.finishing = wasFinishing; 3626 if (res != ActivityManager.START_SUCCESS) { 3627 return false; 3628 } 3629 return true; 3630 } 3631 } 3632 3633 @Override 3634 public final int startActivityFromRecents(int taskId, Bundle options) { 3635 if (checkCallingPermission(START_TASKS_FROM_RECENTS) != PackageManager.PERMISSION_GRANTED) { 3636 String msg = "Permission Denial: startActivityFromRecents called without " + 3637 START_TASKS_FROM_RECENTS; 3638 Slog.w(TAG, msg); 3639 throw new SecurityException(msg); 3640 } 3641 return startActivityFromRecentsInner(taskId, options); 3642 } 3643 3644 final int startActivityFromRecentsInner(int taskId, Bundle options) { 3645 final TaskRecord task; 3646 final int callingUid; 3647 final String callingPackage; 3648 final Intent intent; 3649 final int userId; 3650 synchronized (this) { 3651 task = recentTaskForIdLocked(taskId); 3652 if (task == null) { 3653 throw new IllegalArgumentException("Task " + taskId + " not found."); 3654 } 3655 if (task.getRootActivity() != null) { 3656 moveTaskToFrontLocked(task.taskId, 0, null); 3657 return ActivityManager.START_TASK_TO_FRONT; 3658 } 3659 callingUid = task.mCallingUid; 3660 callingPackage = task.mCallingPackage; 3661 intent = task.intent; 3662 intent.addFlags(Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY); 3663 userId = task.userId; 3664 } 3665 return startActivityInPackage(callingUid, callingPackage, intent, null, null, null, 0, 0, 3666 options, userId, null, task); 3667 } 3668 3669 final int startActivityInPackage(int uid, String callingPackage, 3670 Intent intent, String resolvedType, IBinder resultTo, 3671 String resultWho, int requestCode, int startFlags, Bundle options, int userId, 3672 IActivityContainer container, TaskRecord inTask) { 3673 3674 userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), userId, 3675 false, ALLOW_FULL_ONLY, "startActivityInPackage", null); 3676 3677 // TODO: Switch to user app stacks here. 3678 int ret = mStackSupervisor.startActivityMayWait(null, uid, callingPackage, intent, 3679 resolvedType, null, null, resultTo, resultWho, requestCode, startFlags, 3680 null, null, null, options, userId, container, inTask); 3681 return ret; 3682 } 3683 3684 @Override 3685 public final int startActivities(IApplicationThread caller, String callingPackage, 3686 Intent[] intents, String[] resolvedTypes, IBinder resultTo, Bundle options, 3687 int userId) { 3688 enforceNotIsolatedCaller("startActivities"); 3689 userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), userId, 3690 false, ALLOW_FULL_ONLY, "startActivity", null); 3691 // TODO: Switch to user app stacks here. 3692 int ret = mStackSupervisor.startActivities(caller, -1, callingPackage, intents, 3693 resolvedTypes, resultTo, options, userId); 3694 return ret; 3695 } 3696 3697 final int startActivitiesInPackage(int uid, String callingPackage, 3698 Intent[] intents, String[] resolvedTypes, IBinder resultTo, 3699 Bundle options, int userId) { 3700 3701 userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), userId, 3702 false, ALLOW_FULL_ONLY, "startActivityInPackage", null); 3703 // TODO: Switch to user app stacks here. 3704 int ret = mStackSupervisor.startActivities(null, uid, callingPackage, intents, resolvedTypes, 3705 resultTo, options, userId); 3706 return ret; 3707 } 3708 3709 //explicitly remove thd old information in mRecentTasks when removing existing user. 3710 private void removeRecentTasksForUserLocked(int userId) { 3711 if(userId <= 0) { 3712 Slog.i(TAG, "Can't remove recent task on user " + userId); 3713 return; 3714 } 3715 3716 for (int i = mRecentTasks.size() - 1; i >= 0; --i) { 3717 TaskRecord tr = mRecentTasks.get(i); 3718 if (tr.userId == userId) { 3719 if(DEBUG_TASKS) Slog.i(TAG, "remove RecentTask " + tr 3720 + " when finishing user" + userId); 3721 mRecentTasks.remove(i); 3722 tr.removedFromRecents(); 3723 } 3724 } 3725 3726 // Remove tasks from persistent storage. 3727 notifyTaskPersisterLocked(null, true); 3728 } 3729 3730 // Sort by taskId 3731 private Comparator<TaskRecord> mTaskRecordComparator = new Comparator<TaskRecord>() { 3732 @Override 3733 public int compare(TaskRecord lhs, TaskRecord rhs) { 3734 return rhs.taskId - lhs.taskId; 3735 } 3736 }; 3737 3738 // Extract the affiliates of the chain containing mRecentTasks[start]. 3739 private int processNextAffiliateChainLocked(int start) { 3740 final TaskRecord startTask = mRecentTasks.get(start); 3741 final int affiliateId = startTask.mAffiliatedTaskId; 3742 3743 // Quick identification of isolated tasks. I.e. those not launched behind. 3744 if (startTask.taskId == affiliateId && startTask.mPrevAffiliate == null && 3745 startTask.mNextAffiliate == null) { 3746 // There is still a slim chance that there are other tasks that point to this task 3747 // and that the chain is so messed up that this task no longer points to them but 3748 // the gain of this optimization outweighs the risk. 3749 startTask.inRecents = true; 3750 return start + 1; 3751 } 3752 3753 // Remove all tasks that are affiliated to affiliateId and put them in mTmpRecents. 3754 mTmpRecents.clear(); 3755 for (int i = mRecentTasks.size() - 1; i >= start; --i) { 3756 final TaskRecord task = mRecentTasks.get(i); 3757 if (task.mAffiliatedTaskId == affiliateId) { 3758 mRecentTasks.remove(i); 3759 mTmpRecents.add(task); 3760 } 3761 } 3762 3763 // Sort them all by taskId. That is the order they were create in and that order will 3764 // always be correct. 3765 Collections.sort(mTmpRecents, mTaskRecordComparator); 3766 3767 // Go through and fix up the linked list. 3768 // The first one is the end of the chain and has no next. 3769 final TaskRecord first = mTmpRecents.get(0); 3770 first.inRecents = true; 3771 if (first.mNextAffiliate != null) { 3772 Slog.w(TAG, "Link error 1 first.next=" + first.mNextAffiliate); 3773 first.setNextAffiliate(null); 3774 notifyTaskPersisterLocked(first, false); 3775 } 3776 // Everything in the middle is doubly linked from next to prev. 3777 final int tmpSize = mTmpRecents.size(); 3778 for (int i = 0; i < tmpSize - 1; ++i) { 3779 final TaskRecord next = mTmpRecents.get(i); 3780 final TaskRecord prev = mTmpRecents.get(i + 1); 3781 if (next.mPrevAffiliate != prev) { 3782 Slog.w(TAG, "Link error 2 next=" + next + " prev=" + next.mPrevAffiliate + 3783 " setting prev=" + prev); 3784 next.setPrevAffiliate(prev); 3785 notifyTaskPersisterLocked(next, false); 3786 } 3787 if (prev.mNextAffiliate != next) { 3788 Slog.w(TAG, "Link error 3 prev=" + prev + " next=" + prev.mNextAffiliate + 3789 " setting next=" + next); 3790 prev.setNextAffiliate(next); 3791 notifyTaskPersisterLocked(prev, false); 3792 } 3793 prev.inRecents = true; 3794 } 3795 // The last one is the beginning of the list and has no prev. 3796 final TaskRecord last = mTmpRecents.get(tmpSize - 1); 3797 if (last.mPrevAffiliate != null) { 3798 Slog.w(TAG, "Link error 4 last.prev=" + last.mPrevAffiliate); 3799 last.setPrevAffiliate(null); 3800 notifyTaskPersisterLocked(last, false); 3801 } 3802 3803 // Insert the group back into mRecentTasks at start. 3804 mRecentTasks.addAll(start, mTmpRecents); 3805 3806 // Let the caller know where we left off. 3807 return start + tmpSize; 3808 } 3809 3810 /** 3811 * Update the recent tasks lists: make sure tasks should still be here (their 3812 * applications / activities still exist), update their availability, fixup ordering 3813 * of affiliations. 3814 */ 3815 void cleanupRecentTasksLocked(int userId) { 3816 if (mRecentTasks == null) { 3817 // Happens when called from the packagemanager broadcast before boot. 3818 return; 3819 } 3820 3821 final HashMap<ComponentName, ActivityInfo> availActCache = new HashMap<>(); 3822 final HashMap<String, ApplicationInfo> availAppCache = new HashMap<>(); 3823 final IPackageManager pm = AppGlobals.getPackageManager(); 3824 final ActivityInfo dummyAct = new ActivityInfo(); 3825 final ApplicationInfo dummyApp = new ApplicationInfo(); 3826 3827 int N = mRecentTasks.size(); 3828 3829 int[] users = userId == UserHandle.USER_ALL 3830 ? getUsersLocked() : new int[] { userId }; 3831 for (int user : users) { 3832 for (int i = 0; i < N; i++) { 3833 TaskRecord task = mRecentTasks.get(i); 3834 if (task.userId != user) { 3835 // Only look at tasks for the user ID of interest. 3836 continue; 3837 } 3838 if (task.autoRemoveRecents && task.getTopActivity() == null) { 3839 // This situation is broken, and we should just get rid of it now. 3840 mRecentTasks.remove(i); 3841 task.removedFromRecents(); 3842 i--; 3843 N--; 3844 Slog.w(TAG, "Removing auto-remove without activity: " + task); 3845 continue; 3846 } 3847 // Check whether this activity is currently available. 3848 if (task.realActivity != null) { 3849 ActivityInfo ai = availActCache.get(task.realActivity); 3850 if (ai == null) { 3851 try { 3852 ai = pm.getActivityInfo(task.realActivity, 3853 PackageManager.GET_UNINSTALLED_PACKAGES 3854 | PackageManager.GET_DISABLED_COMPONENTS, user); 3855 } catch (RemoteException e) { 3856 // Will never happen. 3857 continue; 3858 } 3859 if (ai == null) { 3860 ai = dummyAct; 3861 } 3862 availActCache.put(task.realActivity, ai); 3863 } 3864 if (ai == dummyAct) { 3865 // This could be either because the activity no longer exists, or the 3866 // app is temporarily gone. For the former we want to remove the recents 3867 // entry; for the latter we want to mark it as unavailable. 3868 ApplicationInfo app = availAppCache.get(task.realActivity.getPackageName()); 3869 if (app == null) { 3870 try { 3871 app = pm.getApplicationInfo(task.realActivity.getPackageName(), 3872 PackageManager.GET_UNINSTALLED_PACKAGES 3873 | PackageManager.GET_DISABLED_COMPONENTS, user); 3874 } catch (RemoteException e) { 3875 // Will never happen. 3876 continue; 3877 } 3878 if (app == null) { 3879 app = dummyApp; 3880 } 3881 availAppCache.put(task.realActivity.getPackageName(), app); 3882 } 3883 if (app == dummyApp || (app.flags&ApplicationInfo.FLAG_INSTALLED) == 0) { 3884 // Doesn't exist any more! Good-bye. 3885 mRecentTasks.remove(i); 3886 task.removedFromRecents(); 3887 i--; 3888 N--; 3889 Slog.w(TAG, "Removing no longer valid recent: " + task); 3890 continue; 3891 } else { 3892 // Otherwise just not available for now. 3893 if (task.isAvailable) { 3894 if (DEBUG_RECENTS) Slog.d(TAG, "Making recent unavailable: " 3895 + task); 3896 } 3897 task.isAvailable = false; 3898 } 3899 } else { 3900 if (!ai.enabled || !ai.applicationInfo.enabled 3901 || (ai.applicationInfo.flags&ApplicationInfo.FLAG_INSTALLED) == 0) { 3902 if (task.isAvailable) { 3903 if (DEBUG_RECENTS) Slog.d(TAG, "Making recent unavailable: " 3904 + task + " (enabled=" + ai.enabled + "/" 3905 + ai.applicationInfo.enabled + " flags=" 3906 + Integer.toHexString(ai.applicationInfo.flags) + ")"); 3907 } 3908 task.isAvailable = false; 3909 } else { 3910 if (!task.isAvailable) { 3911 if (DEBUG_RECENTS) Slog.d(TAG, "Making recent available: " 3912 + task); 3913 } 3914 task.isAvailable = true; 3915 } 3916 } 3917 } 3918 } 3919 } 3920 3921 // Verify the affiliate chain for each task. 3922 for (int i = 0; i < N; i = processNextAffiliateChainLocked(i)) { 3923 } 3924 3925 mTmpRecents.clear(); 3926 // mRecentTasks is now in sorted, affiliated order. 3927 } 3928 3929 private final boolean moveAffiliatedTasksToFront(TaskRecord task, int taskIndex) { 3930 int N = mRecentTasks.size(); 3931 TaskRecord top = task; 3932 int topIndex = taskIndex; 3933 while (top.mNextAffiliate != null && topIndex > 0) { 3934 top = top.mNextAffiliate; 3935 topIndex--; 3936 } 3937 if (DEBUG_RECENTS) Slog.d(TAG, "addRecent: adding affilliates starting at " 3938 + topIndex + " from intial " + taskIndex); 3939 // Find the end of the chain, doing a sanity check along the way. 3940 boolean sane = top.mAffiliatedTaskId == task.mAffiliatedTaskId; 3941 int endIndex = topIndex; 3942 TaskRecord prev = top; 3943 while (endIndex < N) { 3944 TaskRecord cur = mRecentTasks.get(endIndex); 3945 if (DEBUG_RECENTS) Slog.d(TAG, "addRecent: looking at next chain @" 3946 + endIndex + " " + cur); 3947 if (cur == top) { 3948 // Verify start of the chain. 3949 if (cur.mNextAffiliate != null || cur.mNextAffiliateTaskId != INVALID_TASK_ID) { 3950 Slog.wtf(TAG, "Bad chain @" + endIndex 3951 + ": first task has next affiliate: " + prev); 3952 sane = false; 3953 break; 3954 } 3955 } else { 3956 // Verify middle of the chain's next points back to the one before. 3957 if (cur.mNextAffiliate != prev 3958 || cur.mNextAffiliateTaskId != prev.taskId) { 3959 Slog.wtf(TAG, "Bad chain @" + endIndex 3960 + ": middle task " + cur + " @" + endIndex 3961 + " has bad next affiliate " 3962 + cur.mNextAffiliate + " id " + cur.mNextAffiliateTaskId 3963 + ", expected " + prev); 3964 sane = false; 3965 break; 3966 } 3967 } 3968 if (cur.mPrevAffiliateTaskId == INVALID_TASK_ID) { 3969 // Chain ends here. 3970 if (cur.mPrevAffiliate != null) { 3971 Slog.wtf(TAG, "Bad chain @" + endIndex 3972 + ": last task " + cur + " has previous affiliate " 3973 + cur.mPrevAffiliate); 3974 sane = false; 3975 } 3976 if (DEBUG_RECENTS) Slog.d(TAG, "addRecent: end of chain @" + endIndex); 3977 break; 3978 } else { 3979 // Verify middle of the chain's prev points to a valid item. 3980 if (cur.mPrevAffiliate == null) { 3981 Slog.wtf(TAG, "Bad chain @" + endIndex 3982 + ": task " + cur + " has previous affiliate " 3983 + cur.mPrevAffiliate + " but should be id " 3984 + cur.mPrevAffiliate); 3985 sane = false; 3986 break; 3987 } 3988 } 3989 if (cur.mAffiliatedTaskId != task.mAffiliatedTaskId) { 3990 Slog.wtf(TAG, "Bad chain @" + endIndex 3991 + ": task " + cur + " has affiliated id " 3992 + cur.mAffiliatedTaskId + " but should be " 3993 + task.mAffiliatedTaskId); 3994 sane = false; 3995 break; 3996 } 3997 prev = cur; 3998 endIndex++; 3999 if (endIndex >= N) { 4000 Slog.wtf(TAG, "Bad chain ran off index " + endIndex 4001 + ": last task " + prev); 4002 sane = false; 4003 break; 4004 } 4005 } 4006 if (sane) { 4007 if (endIndex < taskIndex) { 4008 Slog.wtf(TAG, "Bad chain @" + endIndex 4009 + ": did not extend to task " + task + " @" + taskIndex); 4010 sane = false; 4011 } 4012 } 4013 if (sane) { 4014 // All looks good, we can just move all of the affiliated tasks 4015 // to the top. 4016 for (int i=topIndex; i<=endIndex; i++) { 4017 if (DEBUG_RECENTS) Slog.d(TAG, "addRecent: moving affiliated " + task 4018 + " from " + i + " to " + (i-topIndex)); 4019 TaskRecord cur = mRecentTasks.remove(i); 4020 mRecentTasks.add(i-topIndex, cur); 4021 } 4022 if (DEBUG_RECENTS) Slog.d(TAG, "addRecent: done moving tasks " + topIndex 4023 + " to " + endIndex); 4024 return true; 4025 } 4026 4027 // Whoops, couldn't do it. 4028 return false; 4029 } 4030 4031 final void addRecentTaskLocked(TaskRecord task) { 4032 final boolean isAffiliated = task.mAffiliatedTaskId != task.taskId 4033 || task.mNextAffiliateTaskId != INVALID_TASK_ID 4034 || task.mPrevAffiliateTaskId != INVALID_TASK_ID; 4035 4036 int N = mRecentTasks.size(); 4037 // Quick case: check if the top-most recent task is the same. 4038 if (!isAffiliated && N > 0 && mRecentTasks.get(0) == task) { 4039 if (DEBUG_RECENTS) Slog.d(TAG, "addRecent: already at top: " + task); 4040 return; 4041 } 4042 // Another quick case: check if this is part of a set of affiliated 4043 // tasks that are at the top. 4044 if (isAffiliated && N > 0 && task.inRecents 4045 && task.mAffiliatedTaskId == mRecentTasks.get(0).mAffiliatedTaskId) { 4046 if (DEBUG_RECENTS) Slog.d(TAG, "addRecent: affiliated " + mRecentTasks.get(0) 4047 + " at top when adding " + task); 4048 return; 4049 } 4050 // Another quick case: never add voice sessions. 4051 if (task.voiceSession != null) { 4052 if (DEBUG_RECENTS) Slog.d(TAG, "addRecent: not adding voice interaction " + task); 4053 return; 4054 } 4055 4056 boolean needAffiliationFix = false; 4057 4058 // Slightly less quick case: the task is already in recents, so all we need 4059 // to do is move it. 4060 if (task.inRecents) { 4061 int taskIndex = mRecentTasks.indexOf(task); 4062 if (taskIndex >= 0) { 4063 if (!isAffiliated) { 4064 // Simple case: this is not an affiliated task, so we just move it to the front. 4065 mRecentTasks.remove(taskIndex); 4066 mRecentTasks.add(0, task); 4067 notifyTaskPersisterLocked(task, false); 4068 if (DEBUG_RECENTS) Slog.d(TAG, "addRecent: moving to top " + task 4069 + " from " + taskIndex); 4070 return; 4071 } else { 4072 // More complicated: need to keep all affiliated tasks together. 4073 if (moveAffiliatedTasksToFront(task, taskIndex)) { 4074 // All went well. 4075 return; 4076 } 4077 4078 // Uh oh... something bad in the affiliation chain, try to rebuild 4079 // everything and then go through our general path of adding a new task. 4080 needAffiliationFix = true; 4081 } 4082 } else { 4083 Slog.wtf(TAG, "Task with inRecent not in recents: " + task); 4084 needAffiliationFix = true; 4085 } 4086 } 4087 4088 if (DEBUG_RECENTS) Slog.d(TAG, "addRecent: trimming tasks for " + task); 4089 trimRecentsForTaskLocked(task, true); 4090 4091 N = mRecentTasks.size(); 4092 while (N >= ActivityManager.getMaxRecentTasksStatic()) { 4093 final TaskRecord tr = mRecentTasks.remove(N - 1); 4094 tr.removedFromRecents(); 4095 N--; 4096 } 4097 task.inRecents = true; 4098 if (!isAffiliated || needAffiliationFix) { 4099 // If this is a simple non-affiliated task, or we had some failure trying to 4100 // handle it as part of an affilated task, then just place it at the top. 4101 mRecentTasks.add(0, task); 4102 } else if (isAffiliated) { 4103 // If this is a new affiliated task, then move all of the affiliated tasks 4104 // to the front and insert this new one. 4105 TaskRecord other = task.mNextAffiliate; 4106 if (other == null) { 4107 other = task.mPrevAffiliate; 4108 } 4109 if (other != null) { 4110 int otherIndex = mRecentTasks.indexOf(other); 4111 if (otherIndex >= 0) { 4112 // Insert new task at appropriate location. 4113 int taskIndex; 4114 if (other == task.mNextAffiliate) { 4115 // We found the index of our next affiliation, which is who is 4116 // before us in the list, so add after that point. 4117 taskIndex = otherIndex+1; 4118 } else { 4119 // We found the index of our previous affiliation, which is who is 4120 // after us in the list, so add at their position. 4121 taskIndex = otherIndex; 4122 } 4123 if (DEBUG_RECENTS) Slog.d(TAG, "addRecent: new affiliated task added at " 4124 + taskIndex + ": " + task); 4125 mRecentTasks.add(taskIndex, task); 4126 4127 // Now move everything to the front. 4128 if (moveAffiliatedTasksToFront(task, taskIndex)) { 4129 // All went well. 4130 return; 4131 } 4132 4133 // Uh oh... something bad in the affiliation chain, try to rebuild 4134 // everything and then go through our general path of adding a new task. 4135 needAffiliationFix = true; 4136 } else { 4137 if (DEBUG_RECENTS) Slog.d(TAG, "addRecent: couldn't find other affiliation " 4138 + other); 4139 needAffiliationFix = true; 4140 } 4141 } else { 4142 if (DEBUG_RECENTS) Slog.d(TAG, 4143 "addRecent: adding affiliated task without next/prev:" + task); 4144 needAffiliationFix = true; 4145 } 4146 } 4147 if (DEBUG_RECENTS) Slog.d(TAG, "addRecent: adding " + task); 4148 4149 if (needAffiliationFix) { 4150 if (DEBUG_RECENTS) Slog.d(TAG, "addRecent: regrouping affiliations"); 4151 cleanupRecentTasksLocked(task.userId); 4152 } 4153 } 4154 4155 /** 4156 * If needed, remove oldest existing entries in recents that are for the same kind 4157 * of task as the given one. 4158 */ 4159 int trimRecentsForTaskLocked(TaskRecord task, boolean doTrim) { 4160 int N = mRecentTasks.size(); 4161 final Intent intent = task.intent; 4162 final boolean document = intent != null && intent.isDocument(); 4163 4164 int maxRecents = task.maxRecents - 1; 4165 for (int i=0; i<N; i++) { 4166 final TaskRecord tr = mRecentTasks.get(i); 4167 if (task != tr) { 4168 if (task.userId != tr.userId) { 4169 continue; 4170 } 4171 if (i > MAX_RECENT_BITMAPS) { 4172 tr.freeLastThumbnail(); 4173 } 4174 final Intent trIntent = tr.intent; 4175 if ((task.affinity == null || !task.affinity.equals(tr.affinity)) && 4176 (intent == null || !intent.filterEquals(trIntent))) { 4177 continue; 4178 } 4179 final boolean trIsDocument = trIntent != null && trIntent.isDocument(); 4180 if (document && trIsDocument) { 4181 // These are the same document activity (not necessarily the same doc). 4182 if (maxRecents > 0) { 4183 --maxRecents; 4184 continue; 4185 } 4186 // Hit the maximum number of documents for this task. Fall through 4187 // and remove this document from recents. 4188 } else if (document || trIsDocument) { 4189 // Only one of these is a document. Not the droid we're looking for. 4190 continue; 4191 } 4192 } 4193 4194 if (!doTrim) { 4195 // If the caller is not actually asking for a trim, just tell them we reached 4196 // a point where the trim would happen. 4197 return i; 4198 } 4199 4200 // Either task and tr are the same or, their affinities match or their intents match 4201 // and neither of them is a document, or they are documents using the same activity 4202 // and their maxRecents has been reached. 4203 tr.disposeThumbnail(); 4204 mRecentTasks.remove(i); 4205 if (task != tr) { 4206 tr.removedFromRecents(); 4207 } 4208 i--; 4209 N--; 4210 if (task.intent == null) { 4211 // If the new recent task we are adding is not fully 4212 // specified, then replace it with the existing recent task. 4213 task = tr; 4214 } 4215 notifyTaskPersisterLocked(tr, false); 4216 } 4217 4218 return -1; 4219 } 4220 4221 @Override 4222 public void reportActivityFullyDrawn(IBinder token) { 4223 synchronized (this) { 4224 ActivityRecord r = ActivityRecord.isInStackLocked(token); 4225 if (r == null) { 4226 return; 4227 } 4228 r.reportFullyDrawnLocked(); 4229 } 4230 } 4231 4232 @Override 4233 public void setRequestedOrientation(IBinder token, int requestedOrientation) { 4234 synchronized (this) { 4235 ActivityRecord r = ActivityRecord.isInStackLocked(token); 4236 if (r == null) { 4237 return; 4238 } 4239 final long origId = Binder.clearCallingIdentity(); 4240 mWindowManager.setAppOrientation(r.appToken, requestedOrientation); 4241 Configuration config = mWindowManager.updateOrientationFromAppTokens( 4242 mConfiguration, r.mayFreezeScreenLocked(r.app) ? r.appToken : null); 4243 if (config != null) { 4244 r.frozenBeforeDestroy = true; 4245 if (!updateConfigurationLocked(config, r, false, false)) { 4246 mStackSupervisor.resumeTopActivitiesLocked(); 4247 } 4248 } 4249 Binder.restoreCallingIdentity(origId); 4250 } 4251 } 4252 4253 @Override 4254 public int getRequestedOrientation(IBinder token) { 4255 synchronized (this) { 4256 ActivityRecord r = ActivityRecord.isInStackLocked(token); 4257 if (r == null) { 4258 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 4259 } 4260 return mWindowManager.getAppOrientation(r.appToken); 4261 } 4262 } 4263 4264 /** 4265 * This is the internal entry point for handling Activity.finish(). 4266 * 4267 * @param token The Binder token referencing the Activity we want to finish. 4268 * @param resultCode Result code, if any, from this Activity. 4269 * @param resultData Result data (Intent), if any, from this Activity. 4270 * @param finishTask Whether to finish the task associated with this Activity. Only applies to 4271 * the root Activity in the task. 4272 * 4273 * @return Returns true if the activity successfully finished, or false if it is still running. 4274 */ 4275 @Override 4276 public final boolean finishActivity(IBinder token, int resultCode, Intent resultData, 4277 boolean finishTask) { 4278 // Refuse possible leaked file descriptors 4279 if (resultData != null && resultData.hasFileDescriptors() == true) { 4280 throw new IllegalArgumentException("File descriptors passed in Intent"); 4281 } 4282 4283 synchronized(this) { 4284 ActivityRecord r = ActivityRecord.isInStackLocked(token); 4285 if (r == null) { 4286 return true; 4287 } 4288 // Keep track of the root activity of the task before we finish it 4289 TaskRecord tr = r.task; 4290 ActivityRecord rootR = tr.getRootActivity(); 4291 if (rootR == null) { 4292 Slog.w(TAG, "Finishing task with all activities already finished"); 4293 } 4294 // Do not allow task to finish in Lock Task mode. 4295 if (tr == mStackSupervisor.mLockTaskModeTask) { 4296 if (rootR == r) { 4297 Slog.i(TAG, "Not finishing task in lock task mode"); 4298 mStackSupervisor.showLockTaskToast(); 4299 return false; 4300 } 4301 } 4302 if (mController != null) { 4303 // Find the first activity that is not finishing. 4304 ActivityRecord next = r.task.stack.topRunningActivityLocked(token, 0); 4305 if (next != null) { 4306 // ask watcher if this is allowed 4307 boolean resumeOK = true; 4308 try { 4309 resumeOK = mController.activityResuming(next.packageName); 4310 } catch (RemoteException e) { 4311 mController = null; 4312 Watchdog.getInstance().setActivityController(null); 4313 } 4314 4315 if (!resumeOK) { 4316 Slog.i(TAG, "Not finishing activity because controller resumed"); 4317 return false; 4318 } 4319 } 4320 } 4321 final long origId = Binder.clearCallingIdentity(); 4322 try { 4323 boolean res; 4324 if (finishTask && r == rootR) { 4325 // If requested, remove the task that is associated to this activity only if it 4326 // was the root activity in the task. The result code and data is ignored 4327 // because we don't support returning them across task boundaries. 4328 res = removeTaskByIdLocked(tr.taskId, false); 4329 if (!res) { 4330 Slog.i(TAG, "Removing task failed to finish activity"); 4331 } 4332 } else { 4333 res = tr.stack.requestFinishActivityLocked(token, resultCode, 4334 resultData, "app-request", true); 4335 if (!res) { 4336 Slog.i(TAG, "Failed to finish by app-request"); 4337 } 4338 } 4339 return res; 4340 } finally { 4341 Binder.restoreCallingIdentity(origId); 4342 } 4343 } 4344 } 4345 4346 @Override 4347 public final void finishHeavyWeightApp() { 4348 if (checkCallingPermission(android.Manifest.permission.FORCE_STOP_PACKAGES) 4349 != PackageManager.PERMISSION_GRANTED) { 4350 String msg = "Permission Denial: finishHeavyWeightApp() from pid=" 4351 + Binder.getCallingPid() 4352 + ", uid=" + Binder.getCallingUid() 4353 + " requires " + android.Manifest.permission.FORCE_STOP_PACKAGES; 4354 Slog.w(TAG, msg); 4355 throw new SecurityException(msg); 4356 } 4357 4358 synchronized(this) { 4359 if (mHeavyWeightProcess == null) { 4360 return; 4361 } 4362 4363 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>( 4364 mHeavyWeightProcess.activities); 4365 for (int i=0; i<activities.size(); i++) { 4366 ActivityRecord r = activities.get(i); 4367 if (!r.finishing) { 4368 r.task.stack.finishActivityLocked(r, Activity.RESULT_CANCELED, 4369 null, "finish-heavy", true); 4370 } 4371 } 4372 4373 mHandler.sendMessage(mHandler.obtainMessage(CANCEL_HEAVY_NOTIFICATION_MSG, 4374 mHeavyWeightProcess.userId, 0)); 4375 mHeavyWeightProcess = null; 4376 } 4377 } 4378 4379 @Override 4380 public void crashApplication(int uid, int initialPid, String packageName, 4381 String message) { 4382 if (checkCallingPermission(android.Manifest.permission.FORCE_STOP_PACKAGES) 4383 != PackageManager.PERMISSION_GRANTED) { 4384 String msg = "Permission Denial: crashApplication() from pid=" 4385 + Binder.getCallingPid() 4386 + ", uid=" + Binder.getCallingUid() 4387 + " requires " + android.Manifest.permission.FORCE_STOP_PACKAGES; 4388 Slog.w(TAG, msg); 4389 throw new SecurityException(msg); 4390 } 4391 4392 synchronized(this) { 4393 ProcessRecord proc = null; 4394 4395 // Figure out which process to kill. We don't trust that initialPid 4396 // still has any relation to current pids, so must scan through the 4397 // list. 4398 synchronized (mPidsSelfLocked) { 4399 for (int i=0; i<mPidsSelfLocked.size(); i++) { 4400 ProcessRecord p = mPidsSelfLocked.valueAt(i); 4401 if (p.uid != uid) { 4402 continue; 4403 } 4404 if (p.pid == initialPid) { 4405 proc = p; 4406 break; 4407 } 4408 if (p.pkgList.containsKey(packageName)) { 4409 proc = p; 4410 } 4411 } 4412 } 4413 4414 if (proc == null) { 4415 Slog.w(TAG, "crashApplication: nothing for uid=" + uid 4416 + " initialPid=" + initialPid 4417 + " packageName=" + packageName); 4418 return; 4419 } 4420 4421 if (proc.thread != null) { 4422 if (proc.pid == Process.myPid()) { 4423 Log.w(TAG, "crashApplication: trying to crash self!"); 4424 return; 4425 } 4426 long ident = Binder.clearCallingIdentity(); 4427 try { 4428 proc.thread.scheduleCrash(message); 4429 } catch (RemoteException e) { 4430 } 4431 Binder.restoreCallingIdentity(ident); 4432 } 4433 } 4434 } 4435 4436 @Override 4437 public final void finishSubActivity(IBinder token, String resultWho, 4438 int requestCode) { 4439 synchronized(this) { 4440 final long origId = Binder.clearCallingIdentity(); 4441 ActivityRecord r = ActivityRecord.isInStackLocked(token); 4442 if (r != null) { 4443 r.task.stack.finishSubActivityLocked(r, resultWho, requestCode); 4444 } 4445 Binder.restoreCallingIdentity(origId); 4446 } 4447 } 4448 4449 @Override 4450 public boolean finishActivityAffinity(IBinder token) { 4451 synchronized(this) { 4452 final long origId = Binder.clearCallingIdentity(); 4453 try { 4454 ActivityRecord r = ActivityRecord.isInStackLocked(token); 4455 4456 ActivityRecord rootR = r.task.getRootActivity(); 4457 // Do not allow task to finish in Lock Task mode. 4458 if (r.task == mStackSupervisor.mLockTaskModeTask) { 4459 if (rootR == r) { 4460 mStackSupervisor.showLockTaskToast(); 4461 return false; 4462 } 4463 } 4464 boolean res = false; 4465 if (r != null) { 4466 res = r.task.stack.finishActivityAffinityLocked(r); 4467 } 4468 return res; 4469 } finally { 4470 Binder.restoreCallingIdentity(origId); 4471 } 4472 } 4473 } 4474 4475 @Override 4476 public void finishVoiceTask(IVoiceInteractionSession session) { 4477 synchronized(this) { 4478 final long origId = Binder.clearCallingIdentity(); 4479 try { 4480 mStackSupervisor.finishVoiceTask(session); 4481 } finally { 4482 Binder.restoreCallingIdentity(origId); 4483 } 4484 } 4485 4486 } 4487 4488 @Override 4489 public boolean releaseActivityInstance(IBinder token) { 4490 synchronized(this) { 4491 final long origId = Binder.clearCallingIdentity(); 4492 try { 4493 ActivityRecord r = ActivityRecord.isInStackLocked(token); 4494 if (r.task == null || r.task.stack == null) { 4495 return false; 4496 } 4497 return r.task.stack.safelyDestroyActivityLocked(r, "app-req"); 4498 } finally { 4499 Binder.restoreCallingIdentity(origId); 4500 } 4501 } 4502 } 4503 4504 @Override 4505 public void releaseSomeActivities(IApplicationThread appInt) { 4506 synchronized(this) { 4507 final long origId = Binder.clearCallingIdentity(); 4508 try { 4509 ProcessRecord app = getRecordForAppLocked(appInt); 4510 mStackSupervisor.releaseSomeActivitiesLocked(app, "low-mem"); 4511 } finally { 4512 Binder.restoreCallingIdentity(origId); 4513 } 4514 } 4515 } 4516 4517 @Override 4518 public boolean willActivityBeVisible(IBinder token) { 4519 synchronized(this) { 4520 ActivityStack stack = ActivityRecord.getStackLocked(token); 4521 if (stack != null) { 4522 return stack.willActivityBeVisibleLocked(token); 4523 } 4524 return false; 4525 } 4526 } 4527 4528 @Override 4529 public void overridePendingTransition(IBinder token, String packageName, 4530 int enterAnim, int exitAnim) { 4531 synchronized(this) { 4532 ActivityRecord self = ActivityRecord.isInStackLocked(token); 4533 if (self == null) { 4534 return; 4535 } 4536 4537 final long origId = Binder.clearCallingIdentity(); 4538 4539 if (self.state == ActivityState.RESUMED 4540 || self.state == ActivityState.PAUSING) { 4541 mWindowManager.overridePendingAppTransition(packageName, 4542 enterAnim, exitAnim, null); 4543 } 4544 4545 Binder.restoreCallingIdentity(origId); 4546 } 4547 } 4548 4549 /** 4550 * Main function for removing an existing process from the activity manager 4551 * as a result of that process going away. Clears out all connections 4552 * to the process. 4553 */ 4554 private final void handleAppDiedLocked(ProcessRecord app, 4555 boolean restarting, boolean allowRestart) { 4556 int pid = app.pid; 4557 boolean kept = cleanUpApplicationRecordLocked(app, restarting, allowRestart, -1); 4558 if (!kept && !restarting) { 4559 removeLruProcessLocked(app); 4560 if (pid > 0) { 4561 ProcessList.remove(pid); 4562 } 4563 } 4564 4565 if (mProfileProc == app) { 4566 clearProfilerLocked(); 4567 } 4568 4569 // Remove this application's activities from active lists. 4570 boolean hasVisibleActivities = mStackSupervisor.handleAppDiedLocked(app); 4571 4572 app.activities.clear(); 4573 4574 if (app.instrumentationClass != null) { 4575 Slog.w(TAG, "Crash of app " + app.processName 4576 + " running instrumentation " + app.instrumentationClass); 4577 Bundle info = new Bundle(); 4578 info.putString("shortMsg", "Process crashed."); 4579 finishInstrumentationLocked(app, Activity.RESULT_CANCELED, info); 4580 } 4581 4582 if (!restarting) { 4583 if (!mStackSupervisor.resumeTopActivitiesLocked()) { 4584 // If there was nothing to resume, and we are not already 4585 // restarting this process, but there is a visible activity that 4586 // is hosted by the process... then make sure all visible 4587 // activities are running, taking care of restarting this 4588 // process. 4589 if (hasVisibleActivities) { 4590 mStackSupervisor.ensureActivitiesVisibleLocked(null, 0); 4591 } 4592 } 4593 } 4594 } 4595 4596 private final int getLRURecordIndexForAppLocked(IApplicationThread thread) { 4597 IBinder threadBinder = thread.asBinder(); 4598 // Find the application record. 4599 for (int i=mLruProcesses.size()-1; i>=0; i--) { 4600 ProcessRecord rec = mLruProcesses.get(i); 4601 if (rec.thread != null && rec.thread.asBinder() == threadBinder) { 4602 return i; 4603 } 4604 } 4605 return -1; 4606 } 4607 4608 final ProcessRecord getRecordForAppLocked( 4609 IApplicationThread thread) { 4610 if (thread == null) { 4611 return null; 4612 } 4613 4614 int appIndex = getLRURecordIndexForAppLocked(thread); 4615 return appIndex >= 0 ? mLruProcesses.get(appIndex) : null; 4616 } 4617 4618 final void doLowMemReportIfNeededLocked(ProcessRecord dyingProc) { 4619 // If there are no longer any background processes running, 4620 // and the app that died was not running instrumentation, 4621 // then tell everyone we are now low on memory. 4622 boolean haveBg = false; 4623 for (int i=mLruProcesses.size()-1; i>=0; i--) { 4624 ProcessRecord rec = mLruProcesses.get(i); 4625 if (rec.thread != null 4626 && rec.setProcState >= ActivityManager.PROCESS_STATE_CACHED_ACTIVITY) { 4627 haveBg = true; 4628 break; 4629 } 4630 } 4631 4632 if (!haveBg) { 4633 boolean doReport = "1".equals(SystemProperties.get(SYSTEM_DEBUGGABLE, "0")); 4634 if (doReport) { 4635 long now = SystemClock.uptimeMillis(); 4636 if (now < (mLastMemUsageReportTime+5*60*1000)) { 4637 doReport = false; 4638 } else { 4639 mLastMemUsageReportTime = now; 4640 } 4641 } 4642 final ArrayList<ProcessMemInfo> memInfos 4643 = doReport ? new ArrayList<ProcessMemInfo>(mLruProcesses.size()) : null; 4644 EventLog.writeEvent(EventLogTags.AM_LOW_MEMORY, mLruProcesses.size()); 4645 long now = SystemClock.uptimeMillis(); 4646 for (int i=mLruProcesses.size()-1; i>=0; i--) { 4647 ProcessRecord rec = mLruProcesses.get(i); 4648 if (rec == dyingProc || rec.thread == null) { 4649 continue; 4650 } 4651 if (doReport) { 4652 memInfos.add(new ProcessMemInfo(rec.processName, rec.pid, rec.setAdj, 4653 rec.setProcState, rec.adjType, rec.makeAdjReason())); 4654 } 4655 if ((rec.lastLowMemory+GC_MIN_INTERVAL) <= now) { 4656 // The low memory report is overriding any current 4657 // state for a GC request. Make sure to do 4658 // heavy/important/visible/foreground processes first. 4659 if (rec.setAdj <= ProcessList.HEAVY_WEIGHT_APP_ADJ) { 4660 rec.lastRequestedGc = 0; 4661 } else { 4662 rec.lastRequestedGc = rec.lastLowMemory; 4663 } 4664 rec.reportLowMemory = true; 4665 rec.lastLowMemory = now; 4666 mProcessesToGc.remove(rec); 4667 addProcessToGcListLocked(rec); 4668 } 4669 } 4670 if (doReport) { 4671 Message msg = mHandler.obtainMessage(REPORT_MEM_USAGE_MSG, memInfos); 4672 mHandler.sendMessage(msg); 4673 } 4674 scheduleAppGcsLocked(); 4675 } 4676 } 4677 4678 final void appDiedLocked(ProcessRecord app) { 4679 appDiedLocked(app, app.pid, app.thread); 4680 } 4681 4682 final void appDiedLocked(ProcessRecord app, int pid, IApplicationThread thread) { 4683 // First check if this ProcessRecord is actually active for the pid. 4684 synchronized (mPidsSelfLocked) { 4685 ProcessRecord curProc = mPidsSelfLocked.get(pid); 4686 if (curProc != app) { 4687 Slog.w(TAG, "Spurious death for " + app + ", curProc for " + pid + ": " + curProc); 4688 return; 4689 } 4690 } 4691 4692 BatteryStatsImpl stats = mBatteryStatsService.getActiveStatistics(); 4693 synchronized (stats) { 4694 stats.noteProcessDiedLocked(app.info.uid, pid); 4695 } 4696 4697 if (!app.killed) { 4698 Process.killProcessQuiet(pid); 4699 Process.killProcessGroup(app.info.uid, pid); 4700 app.killed = true; 4701 } 4702 4703 // Clean up already done if the process has been re-started. 4704 if (app.pid == pid && app.thread != null && 4705 app.thread.asBinder() == thread.asBinder()) { 4706 boolean doLowMem = app.instrumentationClass == null; 4707 boolean doOomAdj = doLowMem; 4708 if (!app.killedByAm) { 4709 Slog.i(TAG, "Process " + app.processName + " (pid " + pid 4710 + ") has died"); 4711 mAllowLowerMemLevel = true; 4712 } else { 4713 // Note that we always want to do oom adj to update our state with the 4714 // new number of procs. 4715 mAllowLowerMemLevel = false; 4716 doLowMem = false; 4717 } 4718 EventLog.writeEvent(EventLogTags.AM_PROC_DIED, app.userId, app.pid, app.processName); 4719 if (DEBUG_CLEANUP) Slog.v( 4720 TAG, "Dying app: " + app + ", pid: " + pid 4721 + ", thread: " + thread.asBinder()); 4722 handleAppDiedLocked(app, false, true); 4723 4724 if (doOomAdj) { 4725 updateOomAdjLocked(); 4726 } 4727 if (doLowMem) { 4728 doLowMemReportIfNeededLocked(app); 4729 } 4730 } else if (app.pid != pid) { 4731 // A new process has already been started. 4732 Slog.i(TAG, "Process " + app.processName + " (pid " + pid 4733 + ") has died and restarted (pid " + app.pid + ")."); 4734 EventLog.writeEvent(EventLogTags.AM_PROC_DIED, app.userId, app.pid, app.processName); 4735 } else if (DEBUG_PROCESSES) { 4736 Slog.d(TAG, "Received spurious death notification for thread " 4737 + thread.asBinder()); 4738 } 4739 } 4740 4741 /** 4742 * If a stack trace dump file is configured, dump process stack traces. 4743 * @param clearTraces causes the dump file to be erased prior to the new 4744 * traces being written, if true; when false, the new traces will be 4745 * appended to any existing file content. 4746 * @param firstPids of dalvik VM processes to dump stack traces for first 4747 * @param lastPids of dalvik VM processes to dump stack traces for last 4748 * @param nativeProcs optional list of native process names to dump stack crawls 4749 * @return file containing stack traces, or null if no dump file is configured 4750 */ 4751 public static File dumpStackTraces(boolean clearTraces, ArrayList<Integer> firstPids, 4752 ProcessCpuTracker processCpuTracker, SparseArray<Boolean> lastPids, String[] nativeProcs) { 4753 String tracesPath = SystemProperties.get("dalvik.vm.stack-trace-file", null); 4754 if (tracesPath == null || tracesPath.length() == 0) { 4755 return null; 4756 } 4757 4758 File tracesFile = new File(tracesPath); 4759 try { 4760 File tracesDir = tracesFile.getParentFile(); 4761 if (!tracesDir.exists()) { 4762 tracesDir.mkdirs(); 4763 if (!SELinux.restorecon(tracesDir)) { 4764 return null; 4765 } 4766 } 4767 FileUtils.setPermissions(tracesDir.getPath(), 0775, -1, -1); // drwxrwxr-x 4768 4769 if (clearTraces && tracesFile.exists()) tracesFile.delete(); 4770 tracesFile.createNewFile(); 4771 FileUtils.setPermissions(tracesFile.getPath(), 0666, -1, -1); // -rw-rw-rw- 4772 } catch (IOException e) { 4773 Slog.w(TAG, "Unable to prepare ANR traces file: " + tracesPath, e); 4774 return null; 4775 } 4776 4777 dumpStackTraces(tracesPath, firstPids, processCpuTracker, lastPids, nativeProcs); 4778 return tracesFile; 4779 } 4780 4781 private static void dumpStackTraces(String tracesPath, ArrayList<Integer> firstPids, 4782 ProcessCpuTracker processCpuTracker, SparseArray<Boolean> lastPids, String[] nativeProcs) { 4783 // Use a FileObserver to detect when traces finish writing. 4784 // The order of traces is considered important to maintain for legibility. 4785 FileObserver observer = new FileObserver(tracesPath, FileObserver.CLOSE_WRITE) { 4786 @Override 4787 public synchronized void onEvent(int event, String path) { notify(); } 4788 }; 4789 4790 try { 4791 observer.startWatching(); 4792 4793 // First collect all of the stacks of the most important pids. 4794 if (firstPids != null) { 4795 try { 4796 int num = firstPids.size(); 4797 for (int i = 0; i < num; i++) { 4798 synchronized (observer) { 4799 Process.sendSignal(firstPids.get(i), Process.SIGNAL_QUIT); 4800 observer.wait(200); // Wait for write-close, give up after 200msec 4801 } 4802 } 4803 } catch (InterruptedException e) { 4804 Slog.wtf(TAG, e); 4805 } 4806 } 4807 4808 // Next collect the stacks of the native pids 4809 if (nativeProcs != null) { 4810 int[] pids = Process.getPidsForCommands(nativeProcs); 4811 if (pids != null) { 4812 for (int pid : pids) { 4813 Debug.dumpNativeBacktraceToFile(pid, tracesPath); 4814 } 4815 } 4816 } 4817 4818 // Lastly, measure CPU usage. 4819 if (processCpuTracker != null) { 4820 processCpuTracker.init(); 4821 System.gc(); 4822 processCpuTracker.update(); 4823 try { 4824 synchronized (processCpuTracker) { 4825 processCpuTracker.wait(500); // measure over 1/2 second. 4826 } 4827 } catch (InterruptedException e) { 4828 } 4829 processCpuTracker.update(); 4830 4831 // We'll take the stack crawls of just the top apps using CPU. 4832 final int N = processCpuTracker.countWorkingStats(); 4833 int numProcs = 0; 4834 for (int i=0; i<N && numProcs<5; i++) { 4835 ProcessCpuTracker.Stats stats = processCpuTracker.getWorkingStats(i); 4836 if (lastPids.indexOfKey(stats.pid) >= 0) { 4837 numProcs++; 4838 try { 4839 synchronized (observer) { 4840 Process.sendSignal(stats.pid, Process.SIGNAL_QUIT); 4841 observer.wait(200); // Wait for write-close, give up after 200msec 4842 } 4843 } catch (InterruptedException e) { 4844 Slog.wtf(TAG, e); 4845 } 4846 4847 } 4848 } 4849 } 4850 } finally { 4851 observer.stopWatching(); 4852 } 4853 } 4854 4855 final void logAppTooSlow(ProcessRecord app, long startTime, String msg) { 4856 if (true || IS_USER_BUILD) { 4857 return; 4858 } 4859 String tracesPath = SystemProperties.get("dalvik.vm.stack-trace-file", null); 4860 if (tracesPath == null || tracesPath.length() == 0) { 4861 return; 4862 } 4863 4864 StrictMode.ThreadPolicy oldPolicy = StrictMode.allowThreadDiskReads(); 4865 StrictMode.allowThreadDiskWrites(); 4866 try { 4867 final File tracesFile = new File(tracesPath); 4868 final File tracesDir = tracesFile.getParentFile(); 4869 final File tracesTmp = new File(tracesDir, "__tmp__"); 4870 try { 4871 if (!tracesDir.exists()) { 4872 tracesDir.mkdirs(); 4873 if (!SELinux.restorecon(tracesDir.getPath())) { 4874 return; 4875 } 4876 } 4877 FileUtils.setPermissions(tracesDir.getPath(), 0775, -1, -1); // drwxrwxr-x 4878 4879 if (tracesFile.exists()) { 4880 tracesTmp.delete(); 4881 tracesFile.renameTo(tracesTmp); 4882 } 4883 StringBuilder sb = new StringBuilder(); 4884 Time tobj = new Time(); 4885 tobj.set(System.currentTimeMillis()); 4886 sb.append(tobj.format("%Y-%m-%d %H:%M:%S")); 4887 sb.append(": "); 4888 TimeUtils.formatDuration(SystemClock.uptimeMillis()-startTime, sb); 4889 sb.append(" since "); 4890 sb.append(msg); 4891 FileOutputStream fos = new FileOutputStream(tracesFile); 4892 fos.write(sb.toString().getBytes()); 4893 if (app == null) { 4894 fos.write("\n*** No application process!".getBytes()); 4895 } 4896 fos.close(); 4897 FileUtils.setPermissions(tracesFile.getPath(), 0666, -1, -1); // -rw-rw-rw- 4898 } catch (IOException e) { 4899 Slog.w(TAG, "Unable to prepare slow app traces file: " + tracesPath, e); 4900 return; 4901 } 4902 4903 if (app != null) { 4904 ArrayList<Integer> firstPids = new ArrayList<Integer>(); 4905 firstPids.add(app.pid); 4906 dumpStackTraces(tracesPath, firstPids, null, null, null); 4907 } 4908 4909 File lastTracesFile = null; 4910 File curTracesFile = null; 4911 for (int i=9; i>=0; i--) { 4912 String name = String.format(Locale.US, "slow%02d.txt", i); 4913 curTracesFile = new File(tracesDir, name); 4914 if (curTracesFile.exists()) { 4915 if (lastTracesFile != null) { 4916 curTracesFile.renameTo(lastTracesFile); 4917 } else { 4918 curTracesFile.delete(); 4919 } 4920 } 4921 lastTracesFile = curTracesFile; 4922 } 4923 tracesFile.renameTo(curTracesFile); 4924 if (tracesTmp.exists()) { 4925 tracesTmp.renameTo(tracesFile); 4926 } 4927 } finally { 4928 StrictMode.setThreadPolicy(oldPolicy); 4929 } 4930 } 4931 4932 final void appNotResponding(ProcessRecord app, ActivityRecord activity, 4933 ActivityRecord parent, boolean aboveSystem, final String annotation) { 4934 ArrayList<Integer> firstPids = new ArrayList<Integer>(5); 4935 SparseArray<Boolean> lastPids = new SparseArray<Boolean>(20); 4936 4937 if (mController != null) { 4938 try { 4939 // 0 == continue, -1 = kill process immediately 4940 int res = mController.appEarlyNotResponding(app.processName, app.pid, annotation); 4941 if (res < 0 && app.pid != MY_PID) { 4942 app.kill("anr", true); 4943 } 4944 } catch (RemoteException e) { 4945 mController = null; 4946 Watchdog.getInstance().setActivityController(null); 4947 } 4948 } 4949 4950 long anrTime = SystemClock.uptimeMillis(); 4951 if (MONITOR_CPU_USAGE) { 4952 updateCpuStatsNow(); 4953 } 4954 4955 synchronized (this) { 4956 // PowerManager.reboot() can block for a long time, so ignore ANRs while shutting down. 4957 if (mShuttingDown) { 4958 Slog.i(TAG, "During shutdown skipping ANR: " + app + " " + annotation); 4959 return; 4960 } else if (app.notResponding) { 4961 Slog.i(TAG, "Skipping duplicate ANR: " + app + " " + annotation); 4962 return; 4963 } else if (app.crashing) { 4964 Slog.i(TAG, "Crashing app skipping ANR: " + app + " " + annotation); 4965 return; 4966 } 4967 4968 // In case we come through here for the same app before completing 4969 // this one, mark as anring now so we will bail out. 4970 app.notResponding = true; 4971 4972 // Log the ANR to the event log. 4973 EventLog.writeEvent(EventLogTags.AM_ANR, app.userId, app.pid, 4974 app.processName, app.info.flags, annotation); 4975 4976 // Dump thread traces as quickly as we can, starting with "interesting" processes. 4977 firstPids.add(app.pid); 4978 4979 int parentPid = app.pid; 4980 if (parent != null && parent.app != null && parent.app.pid > 0) parentPid = parent.app.pid; 4981 if (parentPid != app.pid) firstPids.add(parentPid); 4982 4983 if (MY_PID != app.pid && MY_PID != parentPid) firstPids.add(MY_PID); 4984 4985 for (int i = mLruProcesses.size() - 1; i >= 0; i--) { 4986 ProcessRecord r = mLruProcesses.get(i); 4987 if (r != null && r.thread != null) { 4988 int pid = r.pid; 4989 if (pid > 0 && pid != app.pid && pid != parentPid && pid != MY_PID) { 4990 if (r.persistent) { 4991 firstPids.add(pid); 4992 } else { 4993 lastPids.put(pid, Boolean.TRUE); 4994 } 4995 } 4996 } 4997 } 4998 } 4999 5000 // Log the ANR to the main log. 5001 StringBuilder info = new StringBuilder(); 5002 info.setLength(0); 5003 info.append("ANR in ").append(app.processName); 5004 if (activity != null && activity.shortComponentName != null) { 5005 info.append(" (").append(activity.shortComponentName).append(")"); 5006 } 5007 info.append("\n"); 5008 info.append("PID: ").append(app.pid).append("\n"); 5009 if (annotation != null) { 5010 info.append("Reason: ").append(annotation).append("\n"); 5011 } 5012 if (parent != null && parent != activity) { 5013 info.append("Parent: ").append(parent.shortComponentName).append("\n"); 5014 } 5015 5016 final ProcessCpuTracker processCpuTracker = new ProcessCpuTracker(true); 5017 5018 File tracesFile = dumpStackTraces(true, firstPids, processCpuTracker, lastPids, 5019 NATIVE_STACKS_OF_INTEREST); 5020 5021 String cpuInfo = null; 5022 if (MONITOR_CPU_USAGE) { 5023 updateCpuStatsNow(); 5024 synchronized (mProcessCpuTracker) { 5025 cpuInfo = mProcessCpuTracker.printCurrentState(anrTime); 5026 } 5027 info.append(processCpuTracker.printCurrentLoad()); 5028 info.append(cpuInfo); 5029 } 5030 5031 info.append(processCpuTracker.printCurrentState(anrTime)); 5032 5033 Slog.e(TAG, info.toString()); 5034 if (tracesFile == null) { 5035 // There is no trace file, so dump (only) the alleged culprit's threads to the log 5036 Process.sendSignal(app.pid, Process.SIGNAL_QUIT); 5037 } 5038 5039 addErrorToDropBox("anr", app, app.processName, activity, parent, annotation, 5040 cpuInfo, tracesFile, null); 5041 5042 if (mController != null) { 5043 try { 5044 // 0 == show dialog, 1 = keep waiting, -1 = kill process immediately 5045 int res = mController.appNotResponding(app.processName, app.pid, info.toString()); 5046 if (res != 0) { 5047 if (res < 0 && app.pid != MY_PID) { 5048 app.kill("anr", true); 5049 } else { 5050 synchronized (this) { 5051 mServices.scheduleServiceTimeoutLocked(app); 5052 } 5053 } 5054 return; 5055 } 5056 } catch (RemoteException e) { 5057 mController = null; 5058 Watchdog.getInstance().setActivityController(null); 5059 } 5060 } 5061 5062 // Unless configured otherwise, swallow ANRs in background processes & kill the process. 5063 boolean showBackground = Settings.Secure.getInt(mContext.getContentResolver(), 5064 Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0; 5065 5066 synchronized (this) { 5067 mBatteryStatsService.noteProcessAnr(app.processName, app.uid); 5068 5069 if (!showBackground && !app.isInterestingToUserLocked() && app.pid != MY_PID) { 5070 app.kill("bg anr", true); 5071 return; 5072 } 5073 5074 // Set the app's notResponding state, and look up the errorReportReceiver 5075 makeAppNotRespondingLocked(app, 5076 activity != null ? activity.shortComponentName : null, 5077 annotation != null ? "ANR " + annotation : "ANR", 5078 info.toString()); 5079 5080 // Bring up the infamous App Not Responding dialog 5081 Message msg = Message.obtain(); 5082 HashMap<String, Object> map = new HashMap<String, Object>(); 5083 msg.what = SHOW_NOT_RESPONDING_MSG; 5084 msg.obj = map; 5085 msg.arg1 = aboveSystem ? 1 : 0; 5086 map.put("app", app); 5087 if (activity != null) { 5088 map.put("activity", activity); 5089 } 5090 5091 mHandler.sendMessage(msg); 5092 } 5093 } 5094 5095 final void showLaunchWarningLocked(final ActivityRecord cur, final ActivityRecord next) { 5096 if (!mLaunchWarningShown) { 5097 mLaunchWarningShown = true; 5098 mHandler.post(new Runnable() { 5099 @Override 5100 public void run() { 5101 synchronized (ActivityManagerService.this) { 5102 final Dialog d = new LaunchWarningWindow(mContext, cur, next); 5103 d.show(); 5104 mHandler.postDelayed(new Runnable() { 5105 @Override 5106 public void run() { 5107 synchronized (ActivityManagerService.this) { 5108 d.dismiss(); 5109 mLaunchWarningShown = false; 5110 } 5111 } 5112 }, 4000); 5113 } 5114 } 5115 }); 5116 } 5117 } 5118 5119 @Override 5120 public boolean clearApplicationUserData(final String packageName, 5121 final IPackageDataObserver observer, int userId) { 5122 enforceNotIsolatedCaller("clearApplicationUserData"); 5123 int uid = Binder.getCallingUid(); 5124 int pid = Binder.getCallingPid(); 5125 userId = handleIncomingUser(pid, uid, 5126 userId, false, ALLOW_FULL_ONLY, "clearApplicationUserData", null); 5127 long callingId = Binder.clearCallingIdentity(); 5128 try { 5129 IPackageManager pm = AppGlobals.getPackageManager(); 5130 int pkgUid = -1; 5131 synchronized(this) { 5132 try { 5133 pkgUid = pm.getPackageUid(packageName, userId); 5134 } catch (RemoteException e) { 5135 } 5136 if (pkgUid == -1) { 5137 Slog.w(TAG, "Invalid packageName: " + packageName); 5138 if (observer != null) { 5139 try { 5140 observer.onRemoveCompleted(packageName, false); 5141 } catch (RemoteException e) { 5142 Slog.i(TAG, "Observer no longer exists."); 5143 } 5144 } 5145 return false; 5146 } 5147 if (uid == pkgUid || checkComponentPermission( 5148 android.Manifest.permission.CLEAR_APP_USER_DATA, 5149 pid, uid, -1, true) 5150 == PackageManager.PERMISSION_GRANTED) { 5151 forceStopPackageLocked(packageName, pkgUid, "clear data"); 5152 } else { 5153 throw new SecurityException("PID " + pid + " does not have permission " 5154 + android.Manifest.permission.CLEAR_APP_USER_DATA + " to clear data" 5155 + " of package " + packageName); 5156 } 5157 5158 // Remove all tasks match the cleared application package and user 5159 for (int i = mRecentTasks.size() - 1; i >= 0; i--) { 5160 final TaskRecord tr = mRecentTasks.get(i); 5161 final String taskPackageName = 5162 tr.getBaseIntent().getComponent().getPackageName(); 5163 if (tr.userId != userId) continue; 5164 if (!taskPackageName.equals(packageName)) continue; 5165 removeTaskByIdLocked(tr.taskId, false); 5166 } 5167 } 5168 5169 try { 5170 // Clear application user data 5171 pm.clearApplicationUserData(packageName, observer, userId); 5172 5173 synchronized(this) { 5174 // Remove all permissions granted from/to this package 5175 removeUriPermissionsForPackageLocked(packageName, userId, true); 5176 } 5177 5178 Intent intent = new Intent(Intent.ACTION_PACKAGE_DATA_CLEARED, 5179 Uri.fromParts("package", packageName, null)); 5180 intent.putExtra(Intent.EXTRA_UID, pkgUid); 5181 broadcastIntentInPackage("android", Process.SYSTEM_UID, intent, 5182 null, null, 0, null, null, null, false, false, userId); 5183 } catch (RemoteException e) { 5184 } 5185 } finally { 5186 Binder.restoreCallingIdentity(callingId); 5187 } 5188 return true; 5189 } 5190 5191 @Override 5192 public void killBackgroundProcesses(final String packageName, int userId) { 5193 if (checkCallingPermission(android.Manifest.permission.KILL_BACKGROUND_PROCESSES) 5194 != PackageManager.PERMISSION_GRANTED && 5195 checkCallingPermission(android.Manifest.permission.RESTART_PACKAGES) 5196 != PackageManager.PERMISSION_GRANTED) { 5197 String msg = "Permission Denial: killBackgroundProcesses() from pid=" 5198 + Binder.getCallingPid() 5199 + ", uid=" + Binder.getCallingUid() 5200 + " requires " + android.Manifest.permission.KILL_BACKGROUND_PROCESSES; 5201 Slog.w(TAG, msg); 5202 throw new SecurityException(msg); 5203 } 5204 5205 userId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), 5206 userId, true, ALLOW_FULL_ONLY, "killBackgroundProcesses", null); 5207 long callingId = Binder.clearCallingIdentity(); 5208 try { 5209 IPackageManager pm = AppGlobals.getPackageManager(); 5210 synchronized(this) { 5211 int appId = -1; 5212 try { 5213 appId = UserHandle.getAppId(pm.getPackageUid(packageName, 0)); 5214 } catch (RemoteException e) { 5215 } 5216 if (appId == -1) { 5217 Slog.w(TAG, "Invalid packageName: " + packageName); 5218 return; 5219 } 5220 killPackageProcessesLocked(packageName, appId, userId, 5221 ProcessList.SERVICE_ADJ, false, true, true, false, "kill background"); 5222 } 5223 } finally { 5224 Binder.restoreCallingIdentity(callingId); 5225 } 5226 } 5227 5228 @Override 5229 public void killAllBackgroundProcesses() { 5230 if (checkCallingPermission(android.Manifest.permission.KILL_BACKGROUND_PROCESSES) 5231 != PackageManager.PERMISSION_GRANTED) { 5232 String msg = "Permission Denial: killAllBackgroundProcesses() from pid=" 5233 + Binder.getCallingPid() 5234 + ", uid=" + Binder.getCallingUid() 5235 + " requires " + android.Manifest.permission.KILL_BACKGROUND_PROCESSES; 5236 Slog.w(TAG, msg); 5237 throw new SecurityException(msg); 5238 } 5239 5240 long callingId = Binder.clearCallingIdentity(); 5241 try { 5242 synchronized(this) { 5243 ArrayList<ProcessRecord> procs = new ArrayList<ProcessRecord>(); 5244 final int NP = mProcessNames.getMap().size(); 5245 for (int ip=0; ip<NP; ip++) { 5246 SparseArray<ProcessRecord> apps = mProcessNames.getMap().valueAt(ip); 5247 final int NA = apps.size(); 5248 for (int ia=0; ia<NA; ia++) { 5249 ProcessRecord app = apps.valueAt(ia); 5250 if (app.persistent) { 5251 // we don't kill persistent processes 5252 continue; 5253 } 5254 if (app.removed) { 5255 procs.add(app); 5256 } else if (app.setAdj >= ProcessList.CACHED_APP_MIN_ADJ) { 5257 app.removed = true; 5258 procs.add(app); 5259 } 5260 } 5261 } 5262 5263 int N = procs.size(); 5264 for (int i=0; i<N; i++) { 5265 removeProcessLocked(procs.get(i), false, true, "kill all background"); 5266 } 5267 mAllowLowerMemLevel = true; 5268 updateOomAdjLocked(); 5269 doLowMemReportIfNeededLocked(null); 5270 } 5271 } finally { 5272 Binder.restoreCallingIdentity(callingId); 5273 } 5274 } 5275 5276 @Override 5277 public void forceStopPackage(final String packageName, int userId) { 5278 if (checkCallingPermission(android.Manifest.permission.FORCE_STOP_PACKAGES) 5279 != PackageManager.PERMISSION_GRANTED) { 5280 String msg = "Permission Denial: forceStopPackage() from pid=" 5281 + Binder.getCallingPid() 5282 + ", uid=" + Binder.getCallingUid() 5283 + " requires " + android.Manifest.permission.FORCE_STOP_PACKAGES; 5284 Slog.w(TAG, msg); 5285 throw new SecurityException(msg); 5286 } 5287 final int callingPid = Binder.getCallingPid(); 5288 userId = handleIncomingUser(callingPid, Binder.getCallingUid(), 5289 userId, true, ALLOW_FULL_ONLY, "forceStopPackage", null); 5290 long callingId = Binder.clearCallingIdentity(); 5291 try { 5292 IPackageManager pm = AppGlobals.getPackageManager(); 5293 synchronized(this) { 5294 int[] users = userId == UserHandle.USER_ALL 5295 ? getUsersLocked() : new int[] { userId }; 5296 for (int user : users) { 5297 int pkgUid = -1; 5298 try { 5299 pkgUid = pm.getPackageUid(packageName, user); 5300 } catch (RemoteException e) { 5301 } 5302 if (pkgUid == -1) { 5303 Slog.w(TAG, "Invalid packageName: " + packageName); 5304 continue; 5305 } 5306 try { 5307 pm.setPackageStoppedState(packageName, true, user); 5308 } catch (RemoteException e) { 5309 } catch (IllegalArgumentException e) { 5310 Slog.w(TAG, "Failed trying to unstop package " 5311 + packageName + ": " + e); 5312 } 5313 if (isUserRunningLocked(user, false)) { 5314 forceStopPackageLocked(packageName, pkgUid, "from pid " + callingPid); 5315 } 5316 } 5317 } 5318 } finally { 5319 Binder.restoreCallingIdentity(callingId); 5320 } 5321 } 5322 5323 @Override 5324 public void addPackageDependency(String packageName) { 5325 synchronized (this) { 5326 int callingPid = Binder.getCallingPid(); 5327 if (callingPid == Process.myPid()) { 5328 // Yeah, um, no. 5329 return; 5330 } 5331 ProcessRecord proc; 5332 synchronized (mPidsSelfLocked) { 5333 proc = mPidsSelfLocked.get(Binder.getCallingPid()); 5334 } 5335 if (proc != null) { 5336 if (proc.pkgDeps == null) { 5337 proc.pkgDeps = new ArraySet<String>(1); 5338 } 5339 proc.pkgDeps.add(packageName); 5340 } 5341 } 5342 } 5343 5344 /* 5345 * The pkg name and app id have to be specified. 5346 */ 5347 @Override 5348 public void killApplicationWithAppId(String pkg, int appid, String reason) { 5349 if (pkg == null) { 5350 return; 5351 } 5352 // Make sure the uid is valid. 5353 if (appid < 0) { 5354 Slog.w(TAG, "Invalid appid specified for pkg : " + pkg); 5355 return; 5356 } 5357 int callerUid = Binder.getCallingUid(); 5358 // Only the system server can kill an application 5359 if (callerUid == Process.SYSTEM_UID) { 5360 // Post an aysnc message to kill the application 5361 Message msg = mHandler.obtainMessage(KILL_APPLICATION_MSG); 5362 msg.arg1 = appid; 5363 msg.arg2 = 0; 5364 Bundle bundle = new Bundle(); 5365 bundle.putString("pkg", pkg); 5366 bundle.putString("reason", reason); 5367 msg.obj = bundle; 5368 mHandler.sendMessage(msg); 5369 } else { 5370 throw new SecurityException(callerUid + " cannot kill pkg: " + 5371 pkg); 5372 } 5373 } 5374 5375 @Override 5376 public void closeSystemDialogs(String reason) { 5377 enforceNotIsolatedCaller("closeSystemDialogs"); 5378 5379 final int pid = Binder.getCallingPid(); 5380 final int uid = Binder.getCallingUid(); 5381 final long origId = Binder.clearCallingIdentity(); 5382 try { 5383 synchronized (this) { 5384 // Only allow this from foreground processes, so that background 5385 // applications can't abuse it to prevent system UI from being shown. 5386 if (uid >= Process.FIRST_APPLICATION_UID) { 5387 ProcessRecord proc; 5388 synchronized (mPidsSelfLocked) { 5389 proc = mPidsSelfLocked.get(pid); 5390 } 5391 if (proc.curRawAdj > ProcessList.PERCEPTIBLE_APP_ADJ) { 5392 Slog.w(TAG, "Ignoring closeSystemDialogs " + reason 5393 + " from background process " + proc); 5394 return; 5395 } 5396 } 5397 closeSystemDialogsLocked(reason); 5398 } 5399 } finally { 5400 Binder.restoreCallingIdentity(origId); 5401 } 5402 } 5403 5404 void closeSystemDialogsLocked(String reason) { 5405 Intent intent = new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS); 5406 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY 5407 | Intent.FLAG_RECEIVER_FOREGROUND); 5408 if (reason != null) { 5409 intent.putExtra("reason", reason); 5410 } 5411 mWindowManager.closeSystemDialogs(reason); 5412 5413 mStackSupervisor.closeSystemDialogsLocked(); 5414 5415 broadcastIntentLocked(null, null, intent, null, 5416 null, 0, null, null, null, AppOpsManager.OP_NONE, false, false, -1, 5417 Process.SYSTEM_UID, UserHandle.USER_ALL); 5418 } 5419 5420 @Override 5421 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 5422 enforceNotIsolatedCaller("getProcessMemoryInfo"); 5423 Debug.MemoryInfo[] infos = new Debug.MemoryInfo[pids.length]; 5424 for (int i=pids.length-1; i>=0; i--) { 5425 ProcessRecord proc; 5426 int oomAdj; 5427 synchronized (this) { 5428 synchronized (mPidsSelfLocked) { 5429 proc = mPidsSelfLocked.get(pids[i]); 5430 oomAdj = proc != null ? proc.setAdj : 0; 5431 } 5432 } 5433 infos[i] = new Debug.MemoryInfo(); 5434 Debug.getMemoryInfo(pids[i], infos[i]); 5435 if (proc != null) { 5436 synchronized (this) { 5437 if (proc.thread != null && proc.setAdj == oomAdj) { 5438 // Record this for posterity if the process has been stable. 5439 proc.baseProcessTracker.addPss(infos[i].getTotalPss(), 5440 infos[i].getTotalUss(), false, proc.pkgList); 5441 } 5442 } 5443 } 5444 } 5445 return infos; 5446 } 5447 5448 @Override 5449 public long[] getProcessPss(int[] pids) { 5450 enforceNotIsolatedCaller("getProcessPss"); 5451 long[] pss = new long[pids.length]; 5452 for (int i=pids.length-1; i>=0; i--) { 5453 ProcessRecord proc; 5454 int oomAdj; 5455 synchronized (this) { 5456 synchronized (mPidsSelfLocked) { 5457 proc = mPidsSelfLocked.get(pids[i]); 5458 oomAdj = proc != null ? proc.setAdj : 0; 5459 } 5460 } 5461 long[] tmpUss = new long[1]; 5462 pss[i] = Debug.getPss(pids[i], tmpUss, null); 5463 if (proc != null) { 5464 synchronized (this) { 5465 if (proc.thread != null && proc.setAdj == oomAdj) { 5466 // Record this for posterity if the process has been stable. 5467 proc.baseProcessTracker.addPss(pss[i], tmpUss[0], false, proc.pkgList); 5468 } 5469 } 5470 } 5471 } 5472 return pss; 5473 } 5474 5475 @Override 5476 public void killApplicationProcess(String processName, int uid) { 5477 if (processName == null) { 5478 return; 5479 } 5480 5481 int callerUid = Binder.getCallingUid(); 5482 // Only the system server can kill an application 5483 if (callerUid == Process.SYSTEM_UID) { 5484 synchronized (this) { 5485 ProcessRecord app = getProcessRecordLocked(processName, uid, true); 5486 if (app != null && app.thread != null) { 5487 try { 5488 app.thread.scheduleSuicide(); 5489 } catch (RemoteException e) { 5490 // If the other end already died, then our work here is done. 5491 } 5492 } else { 5493 Slog.w(TAG, "Process/uid not found attempting kill of " 5494 + processName + " / " + uid); 5495 } 5496 } 5497 } else { 5498 throw new SecurityException(callerUid + " cannot kill app process: " + 5499 processName); 5500 } 5501 } 5502 5503 private void forceStopPackageLocked(final String packageName, int uid, String reason) { 5504 forceStopPackageLocked(packageName, UserHandle.getAppId(uid), false, 5505 false, true, false, false, UserHandle.getUserId(uid), reason); 5506 Intent intent = new Intent(Intent.ACTION_PACKAGE_RESTARTED, 5507 Uri.fromParts("package", packageName, null)); 5508 if (!mProcessesReady) { 5509 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY 5510 | Intent.FLAG_RECEIVER_FOREGROUND); 5511 } 5512 intent.putExtra(Intent.EXTRA_UID, uid); 5513 intent.putExtra(Intent.EXTRA_USER_HANDLE, UserHandle.getUserId(uid)); 5514 broadcastIntentLocked(null, null, intent, 5515 null, null, 0, null, null, null, AppOpsManager.OP_NONE, 5516 false, false, 5517 MY_PID, Process.SYSTEM_UID, UserHandle.getUserId(uid)); 5518 } 5519 5520 private void forceStopUserLocked(int userId, String reason) { 5521 forceStopPackageLocked(null, -1, false, false, true, false, false, userId, reason); 5522 Intent intent = new Intent(Intent.ACTION_USER_STOPPED); 5523 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY 5524 | Intent.FLAG_RECEIVER_FOREGROUND); 5525 intent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 5526 broadcastIntentLocked(null, null, intent, 5527 null, null, 0, null, null, null, AppOpsManager.OP_NONE, 5528 false, false, 5529 MY_PID, Process.SYSTEM_UID, UserHandle.USER_ALL); 5530 } 5531 5532 private final boolean killPackageProcessesLocked(String packageName, int appId, 5533 int userId, int minOomAdj, boolean callerWillRestart, boolean allowRestart, 5534 boolean doit, boolean evenPersistent, String reason) { 5535 ArrayList<ProcessRecord> procs = new ArrayList<ProcessRecord>(); 5536 5537 // Remove all processes this package may have touched: all with the 5538 // same UID (except for the system or root user), and all whose name 5539 // matches the package name. 5540 final int NP = mProcessNames.getMap().size(); 5541 for (int ip=0; ip<NP; ip++) { 5542 SparseArray<ProcessRecord> apps = mProcessNames.getMap().valueAt(ip); 5543 final int NA = apps.size(); 5544 for (int ia=0; ia<NA; ia++) { 5545 ProcessRecord app = apps.valueAt(ia); 5546 if (app.persistent && !evenPersistent) { 5547 // we don't kill persistent processes 5548 continue; 5549 } 5550 if (app.removed) { 5551 if (doit) { 5552 procs.add(app); 5553 } 5554 continue; 5555 } 5556 5557 // Skip process if it doesn't meet our oom adj requirement. 5558 if (app.setAdj < minOomAdj) { 5559 continue; 5560 } 5561 5562 // If no package is specified, we call all processes under the 5563 // give user id. 5564 if (packageName == null) { 5565 if (app.userId != userId) { 5566 continue; 5567 } 5568 if (appId >= 0 && UserHandle.getAppId(app.uid) != appId) { 5569 continue; 5570 } 5571 // Package has been specified, we want to hit all processes 5572 // that match it. We need to qualify this by the processes 5573 // that are running under the specified app and user ID. 5574 } else { 5575 final boolean isDep = app.pkgDeps != null 5576 && app.pkgDeps.contains(packageName); 5577 if (!isDep && UserHandle.getAppId(app.uid) != appId) { 5578 continue; 5579 } 5580 if (userId != UserHandle.USER_ALL && app.userId != userId) { 5581 continue; 5582 } 5583 if (!app.pkgList.containsKey(packageName) && !isDep) { 5584 continue; 5585 } 5586 } 5587 5588 // Process has passed all conditions, kill it! 5589 if (!doit) { 5590 return true; 5591 } 5592 app.removed = true; 5593 procs.add(app); 5594 } 5595 } 5596 5597 int N = procs.size(); 5598 for (int i=0; i<N; i++) { 5599 removeProcessLocked(procs.get(i), callerWillRestart, allowRestart, reason); 5600 } 5601 updateOomAdjLocked(); 5602 return N > 0; 5603 } 5604 5605 private final boolean forceStopPackageLocked(String name, int appId, 5606 boolean callerWillRestart, boolean purgeCache, boolean doit, 5607 boolean evenPersistent, boolean uninstalling, int userId, String reason) { 5608 int i; 5609 int N; 5610 5611 if (userId == UserHandle.USER_ALL && name == null) { 5612 Slog.w(TAG, "Can't force stop all processes of all users, that is insane!"); 5613 } 5614 5615 if (appId < 0 && name != null) { 5616 try { 5617 appId = UserHandle.getAppId( 5618 AppGlobals.getPackageManager().getPackageUid(name, 0)); 5619 } catch (RemoteException e) { 5620 } 5621 } 5622 5623 if (doit) { 5624 if (name != null) { 5625 Slog.i(TAG, "Force stopping " + name + " appid=" + appId 5626 + " user=" + userId + ": " + reason); 5627 } else { 5628 Slog.i(TAG, "Force stopping u" + userId + ": " + reason); 5629 } 5630 5631 final ArrayMap<String, SparseArray<Long>> pmap = mProcessCrashTimes.getMap(); 5632 for (int ip=pmap.size()-1; ip>=0; ip--) { 5633 SparseArray<Long> ba = pmap.valueAt(ip); 5634 for (i=ba.size()-1; i>=0; i--) { 5635 boolean remove = false; 5636 final int entUid = ba.keyAt(i); 5637 if (name != null) { 5638 if (userId == UserHandle.USER_ALL) { 5639 if (UserHandle.getAppId(entUid) == appId) { 5640 remove = true; 5641 } 5642 } else { 5643 if (entUid == UserHandle.getUid(userId, appId)) { 5644 remove = true; 5645 } 5646 } 5647 } else if (UserHandle.getUserId(entUid) == userId) { 5648 remove = true; 5649 } 5650 if (remove) { 5651 ba.removeAt(i); 5652 } 5653 } 5654 if (ba.size() == 0) { 5655 pmap.removeAt(ip); 5656 } 5657 } 5658 } 5659 5660 boolean didSomething = killPackageProcessesLocked(name, appId, userId, 5661 -100, callerWillRestart, true, doit, evenPersistent, 5662 name == null ? ("stop user " + userId) : ("stop " + name)); 5663 5664 if (mStackSupervisor.forceStopPackageLocked(name, doit, evenPersistent, userId)) { 5665 if (!doit) { 5666 return true; 5667 } 5668 didSomething = true; 5669 } 5670 5671 if (mServices.forceStopLocked(name, userId, evenPersistent, doit)) { 5672 if (!doit) { 5673 return true; 5674 } 5675 didSomething = true; 5676 } 5677 5678 if (name == null) { 5679 // Remove all sticky broadcasts from this user. 5680 mStickyBroadcasts.remove(userId); 5681 } 5682 5683 ArrayList<ContentProviderRecord> providers = new ArrayList<ContentProviderRecord>(); 5684 if (mProviderMap.collectForceStopProviders(name, appId, doit, evenPersistent, 5685 userId, providers)) { 5686 if (!doit) { 5687 return true; 5688 } 5689 didSomething = true; 5690 } 5691 N = providers.size(); 5692 for (i=0; i<N; i++) { 5693 removeDyingProviderLocked(null, providers.get(i), true); 5694 } 5695 5696 // Remove transient permissions granted from/to this package/user 5697 removeUriPermissionsForPackageLocked(name, userId, false); 5698 5699 if (name == null || uninstalling) { 5700 // Remove pending intents. For now we only do this when force 5701 // stopping users, because we have some problems when doing this 5702 // for packages -- app widgets are not currently cleaned up for 5703 // such packages, so they can be left with bad pending intents. 5704 if (mIntentSenderRecords.size() > 0) { 5705 Iterator<WeakReference<PendingIntentRecord>> it 5706 = mIntentSenderRecords.values().iterator(); 5707 while (it.hasNext()) { 5708 WeakReference<PendingIntentRecord> wpir = it.next(); 5709 if (wpir == null) { 5710 it.remove(); 5711 continue; 5712 } 5713 PendingIntentRecord pir = wpir.get(); 5714 if (pir == null) { 5715 it.remove(); 5716 continue; 5717 } 5718 if (name == null) { 5719 // Stopping user, remove all objects for the user. 5720 if (pir.key.userId != userId) { 5721 // Not the same user, skip it. 5722 continue; 5723 } 5724 } else { 5725 if (UserHandle.getAppId(pir.uid) != appId) { 5726 // Different app id, skip it. 5727 continue; 5728 } 5729 if (userId != UserHandle.USER_ALL && pir.key.userId != userId) { 5730 // Different user, skip it. 5731 continue; 5732 } 5733 if (!pir.key.packageName.equals(name)) { 5734 // Different package, skip it. 5735 continue; 5736 } 5737 } 5738 if (!doit) { 5739 return true; 5740 } 5741 didSomething = true; 5742 it.remove(); 5743 pir.canceled = true; 5744 if (pir.key.activity != null && pir.key.activity.pendingResults != null) { 5745 pir.key.activity.pendingResults.remove(pir.ref); 5746 } 5747 } 5748 } 5749 } 5750 5751 if (doit) { 5752 if (purgeCache && name != null) { 5753 AttributeCache ac = AttributeCache.instance(); 5754 if (ac != null) { 5755 ac.removePackage(name); 5756 } 5757 } 5758 if (mBooted) { 5759 mStackSupervisor.resumeTopActivitiesLocked(); 5760 mStackSupervisor.scheduleIdleLocked(); 5761 } 5762 } 5763 5764 return didSomething; 5765 } 5766 5767 private final boolean removeProcessLocked(ProcessRecord app, 5768 boolean callerWillRestart, boolean allowRestart, String reason) { 5769 final String name = app.processName; 5770 final int uid = app.uid; 5771 if (DEBUG_PROCESSES) Slog.d( 5772 TAG, "Force removing proc " + app.toShortString() + " (" + name 5773 + "/" + uid + ")"); 5774 5775 mProcessNames.remove(name, uid); 5776 mIsolatedProcesses.remove(app.uid); 5777 if (mHeavyWeightProcess == app) { 5778 mHandler.sendMessage(mHandler.obtainMessage(CANCEL_HEAVY_NOTIFICATION_MSG, 5779 mHeavyWeightProcess.userId, 0)); 5780 mHeavyWeightProcess = null; 5781 } 5782 boolean needRestart = false; 5783 if (app.pid > 0 && app.pid != MY_PID) { 5784 int pid = app.pid; 5785 synchronized (mPidsSelfLocked) { 5786 mPidsSelfLocked.remove(pid); 5787 mHandler.removeMessages(PROC_START_TIMEOUT_MSG, app); 5788 } 5789 mBatteryStatsService.noteProcessFinish(app.processName, app.info.uid); 5790 if (app.isolated) { 5791 mBatteryStatsService.removeIsolatedUid(app.uid, app.info.uid); 5792 } 5793 app.kill(reason, true); 5794 handleAppDiedLocked(app, true, allowRestart); 5795 removeLruProcessLocked(app); 5796 5797 if (app.persistent && !app.isolated) { 5798 if (!callerWillRestart) { 5799 addAppLocked(app.info, false, null /* ABI override */); 5800 } else { 5801 needRestart = true; 5802 } 5803 } 5804 } else { 5805 mRemovedProcesses.add(app); 5806 } 5807 5808 return needRestart; 5809 } 5810 5811 private final void processStartTimedOutLocked(ProcessRecord app) { 5812 final int pid = app.pid; 5813 boolean gone = false; 5814 synchronized (mPidsSelfLocked) { 5815 ProcessRecord knownApp = mPidsSelfLocked.get(pid); 5816 if (knownApp != null && knownApp.thread == null) { 5817 mPidsSelfLocked.remove(pid); 5818 gone = true; 5819 } 5820 } 5821 5822 if (gone) { 5823 Slog.w(TAG, "Process " + app + " failed to attach"); 5824 EventLog.writeEvent(EventLogTags.AM_PROCESS_START_TIMEOUT, app.userId, 5825 pid, app.uid, app.processName); 5826 mProcessNames.remove(app.processName, app.uid); 5827 mIsolatedProcesses.remove(app.uid); 5828 if (mHeavyWeightProcess == app) { 5829 mHandler.sendMessage(mHandler.obtainMessage(CANCEL_HEAVY_NOTIFICATION_MSG, 5830 mHeavyWeightProcess.userId, 0)); 5831 mHeavyWeightProcess = null; 5832 } 5833 mBatteryStatsService.noteProcessFinish(app.processName, app.info.uid); 5834 if (app.isolated) { 5835 mBatteryStatsService.removeIsolatedUid(app.uid, app.info.uid); 5836 } 5837 // Take care of any launching providers waiting for this process. 5838 checkAppInLaunchingProvidersLocked(app, true); 5839 // Take care of any services that are waiting for the process. 5840 mServices.processStartTimedOutLocked(app); 5841 app.kill("start timeout", true); 5842 if (mBackupTarget != null && mBackupTarget.app.pid == pid) { 5843 Slog.w(TAG, "Unattached app died before backup, skipping"); 5844 try { 5845 IBackupManager bm = IBackupManager.Stub.asInterface( 5846 ServiceManager.getService(Context.BACKUP_SERVICE)); 5847 bm.agentDisconnected(app.info.packageName); 5848 } catch (RemoteException e) { 5849 // Can't happen; the backup manager is local 5850 } 5851 } 5852 if (isPendingBroadcastProcessLocked(pid)) { 5853 Slog.w(TAG, "Unattached app died before broadcast acknowledged, skipping"); 5854 skipPendingBroadcastLocked(pid); 5855 } 5856 } else { 5857 Slog.w(TAG, "Spurious process start timeout - pid not known for " + app); 5858 } 5859 } 5860 5861 private final boolean attachApplicationLocked(IApplicationThread thread, 5862 int pid) { 5863 5864 // Find the application record that is being attached... either via 5865 // the pid if we are running in multiple processes, or just pull the 5866 // next app record if we are emulating process with anonymous threads. 5867 ProcessRecord app; 5868 if (pid != MY_PID && pid >= 0) { 5869 synchronized (mPidsSelfLocked) { 5870 app = mPidsSelfLocked.get(pid); 5871 } 5872 } else { 5873 app = null; 5874 } 5875 5876 if (app == null) { 5877 Slog.w(TAG, "No pending application record for pid " + pid 5878 + " (IApplicationThread " + thread + "); dropping process"); 5879 EventLog.writeEvent(EventLogTags.AM_DROP_PROCESS, pid); 5880 if (pid > 0 && pid != MY_PID) { 5881 Process.killProcessQuiet(pid); 5882 //TODO: Process.killProcessGroup(app.info.uid, pid); 5883 } else { 5884 try { 5885 thread.scheduleExit(); 5886 } catch (Exception e) { 5887 // Ignore exceptions. 5888 } 5889 } 5890 return false; 5891 } 5892 5893 // If this application record is still attached to a previous 5894 // process, clean it up now. 5895 if (app.thread != null) { 5896 handleAppDiedLocked(app, true, true); 5897 } 5898 5899 // Tell the process all about itself. 5900 5901 if (localLOGV) Slog.v( 5902 TAG, "Binding process pid " + pid + " to record " + app); 5903 5904 final String processName = app.processName; 5905 try { 5906 AppDeathRecipient adr = new AppDeathRecipient( 5907 app, pid, thread); 5908 thread.asBinder().linkToDeath(adr, 0); 5909 app.deathRecipient = adr; 5910 } catch (RemoteException e) { 5911 app.resetPackageList(mProcessStats); 5912 startProcessLocked(app, "link fail", processName); 5913 return false; 5914 } 5915 5916 EventLog.writeEvent(EventLogTags.AM_PROC_BOUND, app.userId, app.pid, app.processName); 5917 5918 app.makeActive(thread, mProcessStats); 5919 app.curAdj = app.setAdj = -100; 5920 app.curSchedGroup = app.setSchedGroup = Process.THREAD_GROUP_DEFAULT; 5921 app.forcingToForeground = null; 5922 updateProcessForegroundLocked(app, false, false); 5923 app.hasShownUi = false; 5924 app.debugging = false; 5925 app.cached = false; 5926 app.killedByAm = false; 5927 5928 mHandler.removeMessages(PROC_START_TIMEOUT_MSG, app); 5929 5930 boolean normalMode = mProcessesReady || isAllowedWhileBooting(app.info); 5931 List<ProviderInfo> providers = normalMode ? generateApplicationProvidersLocked(app) : null; 5932 5933 if (!normalMode) { 5934 Slog.i(TAG, "Launching preboot mode app: " + app); 5935 } 5936 5937 if (localLOGV) Slog.v( 5938 TAG, "New app record " + app 5939 + " thread=" + thread.asBinder() + " pid=" + pid); 5940 try { 5941 int testMode = IApplicationThread.DEBUG_OFF; 5942 if (mDebugApp != null && mDebugApp.equals(processName)) { 5943 testMode = mWaitForDebugger 5944 ? IApplicationThread.DEBUG_WAIT 5945 : IApplicationThread.DEBUG_ON; 5946 app.debugging = true; 5947 if (mDebugTransient) { 5948 mDebugApp = mOrigDebugApp; 5949 mWaitForDebugger = mOrigWaitForDebugger; 5950 } 5951 } 5952 String profileFile = app.instrumentationProfileFile; 5953 ParcelFileDescriptor profileFd = null; 5954 int samplingInterval = 0; 5955 boolean profileAutoStop = false; 5956 if (mProfileApp != null && mProfileApp.equals(processName)) { 5957 mProfileProc = app; 5958 profileFile = mProfileFile; 5959 profileFd = mProfileFd; 5960 samplingInterval = mSamplingInterval; 5961 profileAutoStop = mAutoStopProfiler; 5962 } 5963 boolean enableOpenGlTrace = false; 5964 if (mOpenGlTraceApp != null && mOpenGlTraceApp.equals(processName)) { 5965 enableOpenGlTrace = true; 5966 mOpenGlTraceApp = null; 5967 } 5968 5969 // If the app is being launched for restore or full backup, set it up specially 5970 boolean isRestrictedBackupMode = false; 5971 if (mBackupTarget != null && mBackupAppName.equals(processName)) { 5972 isRestrictedBackupMode = (mBackupTarget.backupMode == BackupRecord.RESTORE) 5973 || (mBackupTarget.backupMode == BackupRecord.RESTORE_FULL) 5974 || (mBackupTarget.backupMode == BackupRecord.BACKUP_FULL); 5975 } 5976 5977 ensurePackageDexOpt(app.instrumentationInfo != null 5978 ? app.instrumentationInfo.packageName 5979 : app.info.packageName); 5980 if (app.instrumentationClass != null) { 5981 ensurePackageDexOpt(app.instrumentationClass.getPackageName()); 5982 } 5983 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Binding proc " 5984 + processName + " with config " + mConfiguration); 5985 ApplicationInfo appInfo = app.instrumentationInfo != null 5986 ? app.instrumentationInfo : app.info; 5987 app.compat = compatibilityInfoForPackageLocked(appInfo); 5988 if (profileFd != null) { 5989 profileFd = profileFd.dup(); 5990 } 5991 ProfilerInfo profilerInfo = profileFile == null ? null 5992 : new ProfilerInfo(profileFile, profileFd, samplingInterval, profileAutoStop); 5993 thread.bindApplication(processName, appInfo, providers, app.instrumentationClass, 5994 profilerInfo, app.instrumentationArguments, app.instrumentationWatcher, 5995 app.instrumentationUiAutomationConnection, testMode, enableOpenGlTrace, 5996 isRestrictedBackupMode || !normalMode, app.persistent, 5997 new Configuration(mConfiguration), app.compat, 5998 getCommonServicesLocked(app.isolated), 5999 mCoreSettingsObserver.getCoreSettingsLocked()); 6000 updateLruProcessLocked(app, false, null); 6001 app.lastRequestedGc = app.lastLowMemory = SystemClock.uptimeMillis(); 6002 } catch (Exception e) { 6003 // todo: Yikes! What should we do? For now we will try to 6004 // start another process, but that could easily get us in 6005 // an infinite loop of restarting processes... 6006 Slog.wtf(TAG, "Exception thrown during bind of " + app, e); 6007 6008 app.resetPackageList(mProcessStats); 6009 app.unlinkDeathRecipient(); 6010 startProcessLocked(app, "bind fail", processName); 6011 return false; 6012 } 6013 6014 // Remove this record from the list of starting applications. 6015 mPersistentStartingProcesses.remove(app); 6016 if (DEBUG_PROCESSES && mProcessesOnHold.contains(app)) Slog.v(TAG, 6017 "Attach application locked removing on hold: " + app); 6018 mProcessesOnHold.remove(app); 6019 6020 boolean badApp = false; 6021 boolean didSomething = false; 6022 6023 // See if the top visible activity is waiting to run in this process... 6024 if (normalMode) { 6025 try { 6026 if (mStackSupervisor.attachApplicationLocked(app)) { 6027 didSomething = true; 6028 } 6029 } catch (Exception e) { 6030 Slog.wtf(TAG, "Exception thrown launching activities in " + app, e); 6031 badApp = true; 6032 } 6033 } 6034 6035 // Find any services that should be running in this process... 6036 if (!badApp) { 6037 try { 6038 didSomething |= mServices.attachApplicationLocked(app, processName); 6039 } catch (Exception e) { 6040 Slog.wtf(TAG, "Exception thrown starting services in " + app, e); 6041 badApp = true; 6042 } 6043 } 6044 6045 // Check if a next-broadcast receiver is in this process... 6046 if (!badApp && isPendingBroadcastProcessLocked(pid)) { 6047 try { 6048 didSomething |= sendPendingBroadcastsLocked(app); 6049 } catch (Exception e) { 6050 // If the app died trying to launch the receiver we declare it 'bad' 6051 Slog.wtf(TAG, "Exception thrown dispatching broadcasts in " + app, e); 6052 badApp = true; 6053 } 6054 } 6055 6056 // Check whether the next backup agent is in this process... 6057 if (!badApp && mBackupTarget != null && mBackupTarget.appInfo.uid == app.uid) { 6058 if (DEBUG_BACKUP) Slog.v(TAG, "New app is backup target, launching agent for " + app); 6059 ensurePackageDexOpt(mBackupTarget.appInfo.packageName); 6060 try { 6061 thread.scheduleCreateBackupAgent(mBackupTarget.appInfo, 6062 compatibilityInfoForPackageLocked(mBackupTarget.appInfo), 6063 mBackupTarget.backupMode); 6064 } catch (Exception e) { 6065 Slog.wtf(TAG, "Exception thrown creating backup agent in " + app, e); 6066 badApp = true; 6067 } 6068 } 6069 6070 if (badApp) { 6071 app.kill("error during init", true); 6072 handleAppDiedLocked(app, false, true); 6073 return false; 6074 } 6075 6076 if (!didSomething) { 6077 updateOomAdjLocked(); 6078 } 6079 6080 return true; 6081 } 6082 6083 @Override 6084 public final void attachApplication(IApplicationThread thread) { 6085 synchronized (this) { 6086 int callingPid = Binder.getCallingPid(); 6087 final long origId = Binder.clearCallingIdentity(); 6088 attachApplicationLocked(thread, callingPid); 6089 Binder.restoreCallingIdentity(origId); 6090 } 6091 } 6092 6093 @Override 6094 public final void activityIdle(IBinder token, Configuration config, boolean stopProfiling) { 6095 final long origId = Binder.clearCallingIdentity(); 6096 synchronized (this) { 6097 ActivityStack stack = ActivityRecord.getStackLocked(token); 6098 if (stack != null) { 6099 ActivityRecord r = 6100 mStackSupervisor.activityIdleInternalLocked(token, false, config); 6101 if (stopProfiling) { 6102 if ((mProfileProc == r.app) && (mProfileFd != null)) { 6103 try { 6104 mProfileFd.close(); 6105 } catch (IOException e) { 6106 } 6107 clearProfilerLocked(); 6108 } 6109 } 6110 } 6111 } 6112 Binder.restoreCallingIdentity(origId); 6113 } 6114 6115 void postFinishBooting(boolean finishBooting, boolean enableScreen) { 6116 mHandler.sendMessage(mHandler.obtainMessage(FINISH_BOOTING_MSG, 6117 finishBooting? 1 : 0, enableScreen ? 1 : 0)); 6118 } 6119 6120 void enableScreenAfterBoot() { 6121 EventLog.writeEvent(EventLogTags.BOOT_PROGRESS_ENABLE_SCREEN, 6122 SystemClock.uptimeMillis()); 6123 mWindowManager.enableScreenAfterBoot(); 6124 6125 synchronized (this) { 6126 updateEventDispatchingLocked(); 6127 } 6128 } 6129 6130 @Override 6131 public void showBootMessage(final CharSequence msg, final boolean always) { 6132 enforceNotIsolatedCaller("showBootMessage"); 6133 mWindowManager.showBootMessage(msg, always); 6134 } 6135 6136 @Override 6137 public void keyguardWaitingForActivityDrawn() { 6138 enforceNotIsolatedCaller("keyguardWaitingForActivityDrawn"); 6139 final long token = Binder.clearCallingIdentity(); 6140 try { 6141 synchronized (this) { 6142 if (DEBUG_LOCKSCREEN) logLockScreen(""); 6143 mWindowManager.keyguardWaitingForActivityDrawn(); 6144 if (mLockScreenShown == LOCK_SCREEN_SHOWN) { 6145 mLockScreenShown = LOCK_SCREEN_LEAVING; 6146 updateSleepIfNeededLocked(); 6147 } 6148 } 6149 } finally { 6150 Binder.restoreCallingIdentity(token); 6151 } 6152 } 6153 6154 final void finishBooting() { 6155 synchronized (this) { 6156 if (!mBootAnimationComplete) { 6157 mCallFinishBooting = true; 6158 return; 6159 } 6160 mCallFinishBooting = false; 6161 } 6162 6163 ArraySet<String> completedIsas = new ArraySet<String>(); 6164 for (String abi : Build.SUPPORTED_ABIS) { 6165 Process.establishZygoteConnectionForAbi(abi); 6166 final String instructionSet = VMRuntime.getInstructionSet(abi); 6167 if (!completedIsas.contains(instructionSet)) { 6168 if (mInstaller.markBootComplete(VMRuntime.getInstructionSet(abi)) != 0) { 6169 Slog.e(TAG, "Unable to mark boot complete for abi: " + abi); 6170 } 6171 completedIsas.add(instructionSet); 6172 } 6173 } 6174 6175 IntentFilter pkgFilter = new IntentFilter(); 6176 pkgFilter.addAction(Intent.ACTION_QUERY_PACKAGE_RESTART); 6177 pkgFilter.addDataScheme("package"); 6178 mContext.registerReceiver(new BroadcastReceiver() { 6179 @Override 6180 public void onReceive(Context context, Intent intent) { 6181 String[] pkgs = intent.getStringArrayExtra(Intent.EXTRA_PACKAGES); 6182 if (pkgs != null) { 6183 for (String pkg : pkgs) { 6184 synchronized (ActivityManagerService.this) { 6185 if (forceStopPackageLocked(pkg, -1, false, false, false, false, false, 6186 0, "finished booting")) { 6187 setResultCode(Activity.RESULT_OK); 6188 return; 6189 } 6190 } 6191 } 6192 } 6193 } 6194 }, pkgFilter); 6195 6196 // Let system services know. 6197 mSystemServiceManager.startBootPhase(SystemService.PHASE_BOOT_COMPLETED); 6198 6199 synchronized (this) { 6200 // Ensure that any processes we had put on hold are now started 6201 // up. 6202 final int NP = mProcessesOnHold.size(); 6203 if (NP > 0) { 6204 ArrayList<ProcessRecord> procs = 6205 new ArrayList<ProcessRecord>(mProcessesOnHold); 6206 for (int ip=0; ip<NP; ip++) { 6207 if (DEBUG_PROCESSES) Slog.v(TAG, "Starting process on hold: " 6208 + procs.get(ip)); 6209 startProcessLocked(procs.get(ip), "on-hold", null); 6210 } 6211 } 6212 6213 if (mFactoryTest != FactoryTest.FACTORY_TEST_LOW_LEVEL) { 6214 // Start looking for apps that are abusing wake locks. 6215 Message nmsg = mHandler.obtainMessage(CHECK_EXCESSIVE_WAKE_LOCKS_MSG); 6216 mHandler.sendMessageDelayed(nmsg, POWER_CHECK_DELAY); 6217 // Tell anyone interested that we are done booting! 6218 SystemProperties.set("sys.boot_completed", "1"); 6219 6220 // And trigger dev.bootcomplete if we are not showing encryption progress 6221 if (!"trigger_restart_min_framework".equals(SystemProperties.get("vold.decrypt")) 6222 || "".equals(SystemProperties.get("vold.encrypt_progress"))) { 6223 SystemProperties.set("dev.bootcomplete", "1"); 6224 } 6225 for (int i=0; i<mStartedUsers.size(); i++) { 6226 UserStartedState uss = mStartedUsers.valueAt(i); 6227 if (uss.mState == UserStartedState.STATE_BOOTING) { 6228 uss.mState = UserStartedState.STATE_RUNNING; 6229 final int userId = mStartedUsers.keyAt(i); 6230 Intent intent = new Intent(Intent.ACTION_BOOT_COMPLETED, null); 6231 intent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 6232 intent.addFlags(Intent.FLAG_RECEIVER_NO_ABORT); 6233 broadcastIntentLocked(null, null, intent, null, 6234 new IIntentReceiver.Stub() { 6235 @Override 6236 public void performReceive(Intent intent, int resultCode, 6237 String data, Bundle extras, boolean ordered, 6238 boolean sticky, int sendingUser) { 6239 synchronized (ActivityManagerService.this) { 6240 requestPssAllProcsLocked(SystemClock.uptimeMillis(), 6241 true, false); 6242 } 6243 } 6244 }, 6245 0, null, null, 6246 android.Manifest.permission.RECEIVE_BOOT_COMPLETED, 6247 AppOpsManager.OP_NONE, true, false, MY_PID, Process.SYSTEM_UID, 6248 userId); 6249 } 6250 } 6251 scheduleStartProfilesLocked(); 6252 } 6253 } 6254 } 6255 6256 @Override 6257 public void bootAnimationComplete() { 6258 final boolean callFinishBooting; 6259 synchronized (this) { 6260 callFinishBooting = mCallFinishBooting; 6261 mBootAnimationComplete = true; 6262 } 6263 if (callFinishBooting) { 6264 finishBooting(); 6265 } 6266 } 6267 6268 @Override 6269 public void systemBackupRestored() { 6270 synchronized (this) { 6271 if (mSystemReady) { 6272 mTaskPersister.restoreTasksFromOtherDeviceLocked(); 6273 } else { 6274 Slog.w(TAG, "System backup restored before system is ready"); 6275 } 6276 } 6277 } 6278 6279 final void ensureBootCompleted() { 6280 boolean booting; 6281 boolean enableScreen; 6282 synchronized (this) { 6283 booting = mBooting; 6284 mBooting = false; 6285 enableScreen = !mBooted; 6286 mBooted = true; 6287 } 6288 6289 if (booting) { 6290 finishBooting(); 6291 } 6292 6293 if (enableScreen) { 6294 enableScreenAfterBoot(); 6295 } 6296 } 6297 6298 @Override 6299 public final void activityResumed(IBinder token) { 6300 final long origId = Binder.clearCallingIdentity(); 6301 synchronized(this) { 6302 ActivityStack stack = ActivityRecord.getStackLocked(token); 6303 if (stack != null) { 6304 ActivityRecord.activityResumedLocked(token); 6305 } 6306 } 6307 Binder.restoreCallingIdentity(origId); 6308 } 6309 6310 @Override 6311 public final void activityPaused(IBinder token) { 6312 final long origId = Binder.clearCallingIdentity(); 6313 synchronized(this) { 6314 ActivityStack stack = ActivityRecord.getStackLocked(token); 6315 if (stack != null) { 6316 stack.activityPausedLocked(token, false); 6317 } 6318 } 6319 Binder.restoreCallingIdentity(origId); 6320 } 6321 6322 @Override 6323 public final void activityStopped(IBinder token, Bundle icicle, 6324 PersistableBundle persistentState, CharSequence description) { 6325 if (localLOGV) Slog.v(TAG, "Activity stopped: token=" + token); 6326 6327 // Refuse possible leaked file descriptors 6328 if (icicle != null && icicle.hasFileDescriptors()) { 6329 throw new IllegalArgumentException("File descriptors passed in Bundle"); 6330 } 6331 6332 final long origId = Binder.clearCallingIdentity(); 6333 6334 synchronized (this) { 6335 ActivityRecord r = ActivityRecord.isInStackLocked(token); 6336 if (r != null) { 6337 r.task.stack.activityStoppedLocked(r, icicle, persistentState, description); 6338 } 6339 } 6340 6341 trimApplications(); 6342 6343 Binder.restoreCallingIdentity(origId); 6344 } 6345 6346 @Override 6347 public final void activityDestroyed(IBinder token) { 6348 if (DEBUG_SWITCH) Slog.v(TAG, "ACTIVITY DESTROYED: " + token); 6349 synchronized (this) { 6350 ActivityStack stack = ActivityRecord.getStackLocked(token); 6351 if (stack != null) { 6352 stack.activityDestroyedLocked(token, "activityDestroyed"); 6353 } 6354 } 6355 } 6356 6357 @Override 6358 public final void backgroundResourcesReleased(IBinder token) { 6359 final long origId = Binder.clearCallingIdentity(); 6360 try { 6361 synchronized (this) { 6362 ActivityStack stack = ActivityRecord.getStackLocked(token); 6363 if (stack != null) { 6364 stack.backgroundResourcesReleased(); 6365 } 6366 } 6367 } finally { 6368 Binder.restoreCallingIdentity(origId); 6369 } 6370 } 6371 6372 @Override 6373 public final void notifyLaunchTaskBehindComplete(IBinder token) { 6374 mStackSupervisor.scheduleLaunchTaskBehindComplete(token); 6375 } 6376 6377 @Override 6378 public final void notifyEnterAnimationComplete(IBinder token) { 6379 mHandler.sendMessage(mHandler.obtainMessage(ENTER_ANIMATION_COMPLETE_MSG, token)); 6380 } 6381 6382 @Override 6383 public String getCallingPackage(IBinder token) { 6384 synchronized (this) { 6385 ActivityRecord r = getCallingRecordLocked(token); 6386 return r != null ? r.info.packageName : null; 6387 } 6388 } 6389 6390 @Override 6391 public ComponentName getCallingActivity(IBinder token) { 6392 synchronized (this) { 6393 ActivityRecord r = getCallingRecordLocked(token); 6394 return r != null ? r.intent.getComponent() : null; 6395 } 6396 } 6397 6398 private ActivityRecord getCallingRecordLocked(IBinder token) { 6399 ActivityRecord r = ActivityRecord.isInStackLocked(token); 6400 if (r == null) { 6401 return null; 6402 } 6403 return r.resultTo; 6404 } 6405 6406 @Override 6407 public ComponentName getActivityClassForToken(IBinder token) { 6408 synchronized(this) { 6409 ActivityRecord r = ActivityRecord.isInStackLocked(token); 6410 if (r == null) { 6411 return null; 6412 } 6413 return r.intent.getComponent(); 6414 } 6415 } 6416 6417 @Override 6418 public String getPackageForToken(IBinder token) { 6419 synchronized(this) { 6420 ActivityRecord r = ActivityRecord.isInStackLocked(token); 6421 if (r == null) { 6422 return null; 6423 } 6424 return r.packageName; 6425 } 6426 } 6427 6428 @Override 6429 public IIntentSender getIntentSender(int type, 6430 String packageName, IBinder token, String resultWho, 6431 int requestCode, Intent[] intents, String[] resolvedTypes, 6432 int flags, Bundle options, int userId) { 6433 enforceNotIsolatedCaller("getIntentSender"); 6434 // Refuse possible leaked file descriptors 6435 if (intents != null) { 6436 if (intents.length < 1) { 6437 throw new IllegalArgumentException("Intents array length must be >= 1"); 6438 } 6439 for (int i=0; i<intents.length; i++) { 6440 Intent intent = intents[i]; 6441 if (intent != null) { 6442 if (intent.hasFileDescriptors()) { 6443 throw new IllegalArgumentException("File descriptors passed in Intent"); 6444 } 6445 if (type == ActivityManager.INTENT_SENDER_BROADCAST && 6446 (intent.getFlags()&Intent.FLAG_RECEIVER_BOOT_UPGRADE) != 0) { 6447 throw new IllegalArgumentException( 6448 "Can't use FLAG_RECEIVER_BOOT_UPGRADE here"); 6449 } 6450 intents[i] = new Intent(intent); 6451 } 6452 } 6453 if (resolvedTypes != null && resolvedTypes.length != intents.length) { 6454 throw new IllegalArgumentException( 6455 "Intent array length does not match resolvedTypes length"); 6456 } 6457 } 6458 if (options != null) { 6459 if (options.hasFileDescriptors()) { 6460 throw new IllegalArgumentException("File descriptors passed in options"); 6461 } 6462 } 6463 6464 synchronized(this) { 6465 int callingUid = Binder.getCallingUid(); 6466 int origUserId = userId; 6467 userId = handleIncomingUser(Binder.getCallingPid(), callingUid, userId, 6468 type == ActivityManager.INTENT_SENDER_BROADCAST, 6469 ALLOW_NON_FULL, "getIntentSender", null); 6470 if (origUserId == UserHandle.USER_CURRENT) { 6471 // We don't want to evaluate this until the pending intent is 6472 // actually executed. However, we do want to always do the 6473 // security checking for it above. 6474 userId = UserHandle.USER_CURRENT; 6475 } 6476 try { 6477 if (callingUid != 0 && callingUid != Process.SYSTEM_UID) { 6478 int uid = AppGlobals.getPackageManager() 6479 .getPackageUid(packageName, UserHandle.getUserId(callingUid)); 6480 if (!UserHandle.isSameApp(callingUid, uid)) { 6481 String msg = "Permission Denial: getIntentSender() from pid=" 6482 + Binder.getCallingPid() 6483 + ", uid=" + Binder.getCallingUid() 6484 + ", (need uid=" + uid + ")" 6485 + " is not allowed to send as package " + packageName; 6486 Slog.w(TAG, msg); 6487 throw new SecurityException(msg); 6488 } 6489 } 6490 6491 return getIntentSenderLocked(type, packageName, callingUid, userId, 6492 token, resultWho, requestCode, intents, resolvedTypes, flags, options); 6493 6494 } catch (RemoteException e) { 6495 throw new SecurityException(e); 6496 } 6497 } 6498 } 6499 6500 IIntentSender getIntentSenderLocked(int type, String packageName, 6501 int callingUid, int userId, IBinder token, String resultWho, 6502 int requestCode, Intent[] intents, String[] resolvedTypes, int flags, 6503 Bundle options) { 6504 if (DEBUG_MU) 6505 Slog.v(TAG_MU, "getIntentSenderLocked(): uid=" + callingUid); 6506 ActivityRecord activity = null; 6507 if (type == ActivityManager.INTENT_SENDER_ACTIVITY_RESULT) { 6508 activity = ActivityRecord.isInStackLocked(token); 6509 if (activity == null) { 6510 return null; 6511 } 6512 if (activity.finishing) { 6513 return null; 6514 } 6515 } 6516 6517 final boolean noCreate = (flags&PendingIntent.FLAG_NO_CREATE) != 0; 6518 final boolean cancelCurrent = (flags&PendingIntent.FLAG_CANCEL_CURRENT) != 0; 6519 final boolean updateCurrent = (flags&PendingIntent.FLAG_UPDATE_CURRENT) != 0; 6520 flags &= ~(PendingIntent.FLAG_NO_CREATE|PendingIntent.FLAG_CANCEL_CURRENT 6521 |PendingIntent.FLAG_UPDATE_CURRENT); 6522 6523 PendingIntentRecord.Key key = new PendingIntentRecord.Key( 6524 type, packageName, activity, resultWho, 6525 requestCode, intents, resolvedTypes, flags, options, userId); 6526 WeakReference<PendingIntentRecord> ref; 6527 ref = mIntentSenderRecords.get(key); 6528 PendingIntentRecord rec = ref != null ? ref.get() : null; 6529 if (rec != null) { 6530 if (!cancelCurrent) { 6531 if (updateCurrent) { 6532 if (rec.key.requestIntent != null) { 6533 rec.key.requestIntent.replaceExtras(intents != null ? 6534 intents[intents.length - 1] : null); 6535 } 6536 if (intents != null) { 6537 intents[intents.length-1] = rec.key.requestIntent; 6538 rec.key.allIntents = intents; 6539 rec.key.allResolvedTypes = resolvedTypes; 6540 } else { 6541 rec.key.allIntents = null; 6542 rec.key.allResolvedTypes = null; 6543 } 6544 } 6545 return rec; 6546 } 6547 rec.canceled = true; 6548 mIntentSenderRecords.remove(key); 6549 } 6550 if (noCreate) { 6551 return rec; 6552 } 6553 rec = new PendingIntentRecord(this, key, callingUid); 6554 mIntentSenderRecords.put(key, rec.ref); 6555 if (type == ActivityManager.INTENT_SENDER_ACTIVITY_RESULT) { 6556 if (activity.pendingResults == null) { 6557 activity.pendingResults 6558 = new HashSet<WeakReference<PendingIntentRecord>>(); 6559 } 6560 activity.pendingResults.add(rec.ref); 6561 } 6562 return rec; 6563 } 6564 6565 @Override 6566 public void cancelIntentSender(IIntentSender sender) { 6567 if (!(sender instanceof PendingIntentRecord)) { 6568 return; 6569 } 6570 synchronized(this) { 6571 PendingIntentRecord rec = (PendingIntentRecord)sender; 6572 try { 6573 int uid = AppGlobals.getPackageManager() 6574 .getPackageUid(rec.key.packageName, UserHandle.getCallingUserId()); 6575 if (!UserHandle.isSameApp(uid, Binder.getCallingUid())) { 6576 String msg = "Permission Denial: cancelIntentSender() from pid=" 6577 + Binder.getCallingPid() 6578 + ", uid=" + Binder.getCallingUid() 6579 + " is not allowed to cancel packges " 6580 + rec.key.packageName; 6581 Slog.w(TAG, msg); 6582 throw new SecurityException(msg); 6583 } 6584 } catch (RemoteException e) { 6585 throw new SecurityException(e); 6586 } 6587 cancelIntentSenderLocked(rec, true); 6588 } 6589 } 6590 6591 void cancelIntentSenderLocked(PendingIntentRecord rec, boolean cleanActivity) { 6592 rec.canceled = true; 6593 mIntentSenderRecords.remove(rec.key); 6594 if (cleanActivity && rec.key.activity != null) { 6595 rec.key.activity.pendingResults.remove(rec.ref); 6596 } 6597 } 6598 6599 @Override 6600 public String getPackageForIntentSender(IIntentSender pendingResult) { 6601 if (!(pendingResult instanceof PendingIntentRecord)) { 6602 return null; 6603 } 6604 try { 6605 PendingIntentRecord res = (PendingIntentRecord)pendingResult; 6606 return res.key.packageName; 6607 } catch (ClassCastException e) { 6608 } 6609 return null; 6610 } 6611 6612 @Override 6613 public int getUidForIntentSender(IIntentSender sender) { 6614 if (sender instanceof PendingIntentRecord) { 6615 try { 6616 PendingIntentRecord res = (PendingIntentRecord)sender; 6617 return res.uid; 6618 } catch (ClassCastException e) { 6619 } 6620 } 6621 return -1; 6622 } 6623 6624 @Override 6625 public boolean isIntentSenderTargetedToPackage(IIntentSender pendingResult) { 6626 if (!(pendingResult instanceof PendingIntentRecord)) { 6627 return false; 6628 } 6629 try { 6630 PendingIntentRecord res = (PendingIntentRecord)pendingResult; 6631 if (res.key.allIntents == null) { 6632 return false; 6633 } 6634 for (int i=0; i<res.key.allIntents.length; i++) { 6635 Intent intent = res.key.allIntents[i]; 6636 if (intent.getPackage() != null && intent.getComponent() != null) { 6637 return false; 6638 } 6639 } 6640 return true; 6641 } catch (ClassCastException e) { 6642 } 6643 return false; 6644 } 6645 6646 @Override 6647 public boolean isIntentSenderAnActivity(IIntentSender pendingResult) { 6648 if (!(pendingResult instanceof PendingIntentRecord)) { 6649 return false; 6650 } 6651 try { 6652 PendingIntentRecord res = (PendingIntentRecord)pendingResult; 6653 if (res.key.type == ActivityManager.INTENT_SENDER_ACTIVITY) { 6654 return true; 6655 } 6656 return false; 6657 } catch (ClassCastException e) { 6658 } 6659 return false; 6660 } 6661 6662 @Override 6663 public Intent getIntentForIntentSender(IIntentSender pendingResult) { 6664 if (!(pendingResult instanceof PendingIntentRecord)) { 6665 return null; 6666 } 6667 try { 6668 PendingIntentRecord res = (PendingIntentRecord)pendingResult; 6669 return res.key.requestIntent != null ? new Intent(res.key.requestIntent) : null; 6670 } catch (ClassCastException e) { 6671 } 6672 return null; 6673 } 6674 6675 @Override 6676 public String getTagForIntentSender(IIntentSender pendingResult, String prefix) { 6677 if (!(pendingResult instanceof PendingIntentRecord)) { 6678 return null; 6679 } 6680 try { 6681 PendingIntentRecord res = (PendingIntentRecord)pendingResult; 6682 Intent intent = res.key.requestIntent; 6683 if (intent != null) { 6684 if (res.lastTag != null && res.lastTagPrefix == prefix && (res.lastTagPrefix == null 6685 || res.lastTagPrefix.equals(prefix))) { 6686 return res.lastTag; 6687 } 6688 res.lastTagPrefix = prefix; 6689 StringBuilder sb = new StringBuilder(128); 6690 if (prefix != null) { 6691 sb.append(prefix); 6692 } 6693 if (intent.getAction() != null) { 6694 sb.append(intent.getAction()); 6695 } else if (intent.getComponent() != null) { 6696 intent.getComponent().appendShortString(sb); 6697 } else { 6698 sb.append("?"); 6699 } 6700 return res.lastTag = sb.toString(); 6701 } 6702 } catch (ClassCastException e) { 6703 } 6704 return null; 6705 } 6706 6707 @Override 6708 public void setProcessLimit(int max) { 6709 enforceCallingPermission(android.Manifest.permission.SET_PROCESS_LIMIT, 6710 "setProcessLimit()"); 6711 synchronized (this) { 6712 mProcessLimit = max < 0 ? ProcessList.MAX_CACHED_APPS : max; 6713 mProcessLimitOverride = max; 6714 } 6715 trimApplications(); 6716 } 6717 6718 @Override 6719 public int getProcessLimit() { 6720 synchronized (this) { 6721 return mProcessLimitOverride; 6722 } 6723 } 6724 6725 void foregroundTokenDied(ForegroundToken token) { 6726 synchronized (ActivityManagerService.this) { 6727 synchronized (mPidsSelfLocked) { 6728 ForegroundToken cur 6729 = mForegroundProcesses.get(token.pid); 6730 if (cur != token) { 6731 return; 6732 } 6733 mForegroundProcesses.remove(token.pid); 6734 ProcessRecord pr = mPidsSelfLocked.get(token.pid); 6735 if (pr == null) { 6736 return; 6737 } 6738 pr.forcingToForeground = null; 6739 updateProcessForegroundLocked(pr, false, false); 6740 } 6741 updateOomAdjLocked(); 6742 } 6743 } 6744 6745 @Override 6746 public void setProcessForeground(IBinder token, int pid, boolean isForeground) { 6747 enforceCallingPermission(android.Manifest.permission.SET_PROCESS_LIMIT, 6748 "setProcessForeground()"); 6749 synchronized(this) { 6750 boolean changed = false; 6751 6752 synchronized (mPidsSelfLocked) { 6753 ProcessRecord pr = mPidsSelfLocked.get(pid); 6754 if (pr == null && isForeground) { 6755 Slog.w(TAG, "setProcessForeground called on unknown pid: " + pid); 6756 return; 6757 } 6758 ForegroundToken oldToken = mForegroundProcesses.get(pid); 6759 if (oldToken != null) { 6760 oldToken.token.unlinkToDeath(oldToken, 0); 6761 mForegroundProcesses.remove(pid); 6762 if (pr != null) { 6763 pr.forcingToForeground = null; 6764 } 6765 changed = true; 6766 } 6767 if (isForeground && token != null) { 6768 ForegroundToken newToken = new ForegroundToken() { 6769 @Override 6770 public void binderDied() { 6771 foregroundTokenDied(this); 6772 } 6773 }; 6774 newToken.pid = pid; 6775 newToken.token = token; 6776 try { 6777 token.linkToDeath(newToken, 0); 6778 mForegroundProcesses.put(pid, newToken); 6779 pr.forcingToForeground = token; 6780 changed = true; 6781 } catch (RemoteException e) { 6782 // If the process died while doing this, we will later 6783 // do the cleanup with the process death link. 6784 } 6785 } 6786 } 6787 6788 if (changed) { 6789 updateOomAdjLocked(); 6790 } 6791 } 6792 } 6793 6794 // ========================================================= 6795 // PERMISSIONS 6796 // ========================================================= 6797 6798 static class PermissionController extends IPermissionController.Stub { 6799 ActivityManagerService mActivityManagerService; 6800 PermissionController(ActivityManagerService activityManagerService) { 6801 mActivityManagerService = activityManagerService; 6802 } 6803 6804 @Override 6805 public boolean checkPermission(String permission, int pid, int uid) { 6806 return mActivityManagerService.checkPermission(permission, pid, 6807 uid) == PackageManager.PERMISSION_GRANTED; 6808 } 6809 } 6810 6811 class IntentFirewallInterface implements IntentFirewall.AMSInterface { 6812 @Override 6813 public int checkComponentPermission(String permission, int pid, int uid, 6814 int owningUid, boolean exported) { 6815 return ActivityManagerService.this.checkComponentPermission(permission, pid, uid, 6816 owningUid, exported); 6817 } 6818 6819 @Override 6820 public Object getAMSLock() { 6821 return ActivityManagerService.this; 6822 } 6823 } 6824 6825 /** 6826 * This can be called with or without the global lock held. 6827 */ 6828 int checkComponentPermission(String permission, int pid, int uid, 6829 int owningUid, boolean exported) { 6830 if (pid == MY_PID) { 6831 return PackageManager.PERMISSION_GRANTED; 6832 } 6833 return ActivityManager.checkComponentPermission(permission, uid, 6834 owningUid, exported); 6835 } 6836 6837 /** 6838 * As the only public entry point for permissions checking, this method 6839 * can enforce the semantic that requesting a check on a null global 6840 * permission is automatically denied. (Internally a null permission 6841 * string is used when calling {@link #checkComponentPermission} in cases 6842 * when only uid-based security is needed.) 6843 * 6844 * This can be called with or without the global lock held. 6845 */ 6846 @Override 6847 public int checkPermission(String permission, int pid, int uid) { 6848 if (permission == null) { 6849 return PackageManager.PERMISSION_DENIED; 6850 } 6851 return checkComponentPermission(permission, pid, UserHandle.getAppId(uid), -1, true); 6852 } 6853 6854 @Override 6855 public int checkPermissionWithToken(String permission, int pid, int uid, IBinder callerToken) { 6856 if (permission == null) { 6857 return PackageManager.PERMISSION_DENIED; 6858 } 6859 6860 // We might be performing an operation on behalf of an indirect binder 6861 // invocation, e.g. via {@link #openContentUri}. Check and adjust the 6862 // client identity accordingly before proceeding. 6863 Identity tlsIdentity = sCallerIdentity.get(); 6864 if (tlsIdentity != null && tlsIdentity.token == callerToken) { 6865 Slog.d(TAG, "checkComponentPermission() adjusting {pid,uid} to {" 6866 + tlsIdentity.pid + "," + tlsIdentity.uid + "}"); 6867 uid = tlsIdentity.uid; 6868 pid = tlsIdentity.pid; 6869 } 6870 6871 return checkComponentPermission(permission, pid, UserHandle.getAppId(uid), -1, true); 6872 } 6873 6874 /** 6875 * Binder IPC calls go through the public entry point. 6876 * This can be called with or without the global lock held. 6877 */ 6878 int checkCallingPermission(String permission) { 6879 return checkPermission(permission, 6880 Binder.getCallingPid(), 6881 UserHandle.getAppId(Binder.getCallingUid())); 6882 } 6883 6884 /** 6885 * This can be called with or without the global lock held. 6886 */ 6887 void enforceCallingPermission(String permission, String func) { 6888 if (checkCallingPermission(permission) 6889 == PackageManager.PERMISSION_GRANTED) { 6890 return; 6891 } 6892 6893 String msg = "Permission Denial: " + func + " from pid=" 6894 + Binder.getCallingPid() 6895 + ", uid=" + Binder.getCallingUid() 6896 + " requires " + permission; 6897 Slog.w(TAG, msg); 6898 throw new SecurityException(msg); 6899 } 6900 6901 /** 6902 * Determine if UID is holding permissions required to access {@link Uri} in 6903 * the given {@link ProviderInfo}. Final permission checking is always done 6904 * in {@link ContentProvider}. 6905 */ 6906 private final boolean checkHoldingPermissionsLocked( 6907 IPackageManager pm, ProviderInfo pi, GrantUri grantUri, int uid, final int modeFlags) { 6908 if (DEBUG_URI_PERMISSION) Slog.v(TAG, 6909 "checkHoldingPermissionsLocked: uri=" + grantUri + " uid=" + uid); 6910 if (UserHandle.getUserId(uid) != grantUri.sourceUserId) { 6911 if (ActivityManager.checkComponentPermission(INTERACT_ACROSS_USERS, uid, -1, true) 6912 != PERMISSION_GRANTED) { 6913 return false; 6914 } 6915 } 6916 return checkHoldingPermissionsInternalLocked(pm, pi, grantUri, uid, modeFlags, true); 6917 } 6918 6919 private final boolean checkHoldingPermissionsInternalLocked(IPackageManager pm, ProviderInfo pi, 6920 GrantUri grantUri, int uid, final int modeFlags, boolean considerUidPermissions) { 6921 if (pi.applicationInfo.uid == uid) { 6922 return true; 6923 } else if (!pi.exported) { 6924 return false; 6925 } 6926 6927 boolean readMet = (modeFlags & Intent.FLAG_GRANT_READ_URI_PERMISSION) == 0; 6928 boolean writeMet = (modeFlags & Intent.FLAG_GRANT_WRITE_URI_PERMISSION) == 0; 6929 try { 6930 // check if target holds top-level <provider> permissions 6931 if (!readMet && pi.readPermission != null && considerUidPermissions 6932 && (pm.checkUidPermission(pi.readPermission, uid) == PERMISSION_GRANTED)) { 6933 readMet = true; 6934 } 6935 if (!writeMet && pi.writePermission != null && considerUidPermissions 6936 && (pm.checkUidPermission(pi.writePermission, uid) == PERMISSION_GRANTED)) { 6937 writeMet = true; 6938 } 6939 6940 // track if unprotected read/write is allowed; any denied 6941 // <path-permission> below removes this ability 6942 boolean allowDefaultRead = pi.readPermission == null; 6943 boolean allowDefaultWrite = pi.writePermission == null; 6944 6945 // check if target holds any <path-permission> that match uri 6946 final PathPermission[] pps = pi.pathPermissions; 6947 if (pps != null) { 6948 final String path = grantUri.uri.getPath(); 6949 int i = pps.length; 6950 while (i > 0 && (!readMet || !writeMet)) { 6951 i--; 6952 PathPermission pp = pps[i]; 6953 if (pp.match(path)) { 6954 if (!readMet) { 6955 final String pprperm = pp.getReadPermission(); 6956 if (DEBUG_URI_PERMISSION) Slog.v(TAG, "Checking read perm for " 6957 + pprperm + " for " + pp.getPath() 6958 + ": match=" + pp.match(path) 6959 + " check=" + pm.checkUidPermission(pprperm, uid)); 6960 if (pprperm != null) { 6961 if (considerUidPermissions && pm.checkUidPermission(pprperm, uid) 6962 == PERMISSION_GRANTED) { 6963 readMet = true; 6964 } else { 6965 allowDefaultRead = false; 6966 } 6967 } 6968 } 6969 if (!writeMet) { 6970 final String ppwperm = pp.getWritePermission(); 6971 if (DEBUG_URI_PERMISSION) Slog.v(TAG, "Checking write perm " 6972 + ppwperm + " for " + pp.getPath() 6973 + ": match=" + pp.match(path) 6974 + " check=" + pm.checkUidPermission(ppwperm, uid)); 6975 if (ppwperm != null) { 6976 if (considerUidPermissions && pm.checkUidPermission(ppwperm, uid) 6977 == PERMISSION_GRANTED) { 6978 writeMet = true; 6979 } else { 6980 allowDefaultWrite = false; 6981 } 6982 } 6983 } 6984 } 6985 } 6986 } 6987 6988 // grant unprotected <provider> read/write, if not blocked by 6989 // <path-permission> above 6990 if (allowDefaultRead) readMet = true; 6991 if (allowDefaultWrite) writeMet = true; 6992 6993 } catch (RemoteException e) { 6994 return false; 6995 } 6996 6997 return readMet && writeMet; 6998 } 6999 7000 private ProviderInfo getProviderInfoLocked(String authority, int userHandle) { 7001 ProviderInfo pi = null; 7002 ContentProviderRecord cpr = mProviderMap.getProviderByName(authority, userHandle); 7003 if (cpr != null) { 7004 pi = cpr.info; 7005 } else { 7006 try { 7007 pi = AppGlobals.getPackageManager().resolveContentProvider( 7008 authority, PackageManager.GET_URI_PERMISSION_PATTERNS, userHandle); 7009 } catch (RemoteException ex) { 7010 } 7011 } 7012 return pi; 7013 } 7014 7015 private UriPermission findUriPermissionLocked(int targetUid, GrantUri grantUri) { 7016 final ArrayMap<GrantUri, UriPermission> targetUris = mGrantedUriPermissions.get(targetUid); 7017 if (targetUris != null) { 7018 return targetUris.get(grantUri); 7019 } 7020 return null; 7021 } 7022 7023 private UriPermission findOrCreateUriPermissionLocked(String sourcePkg, 7024 String targetPkg, int targetUid, GrantUri grantUri) { 7025 ArrayMap<GrantUri, UriPermission> targetUris = mGrantedUriPermissions.get(targetUid); 7026 if (targetUris == null) { 7027 targetUris = Maps.newArrayMap(); 7028 mGrantedUriPermissions.put(targetUid, targetUris); 7029 } 7030 7031 UriPermission perm = targetUris.get(grantUri); 7032 if (perm == null) { 7033 perm = new UriPermission(sourcePkg, targetPkg, targetUid, grantUri); 7034 targetUris.put(grantUri, perm); 7035 } 7036 7037 return perm; 7038 } 7039 7040 private final boolean checkUriPermissionLocked(GrantUri grantUri, int uid, 7041 final int modeFlags) { 7042 final boolean persistable = (modeFlags & Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION) != 0; 7043 final int minStrength = persistable ? UriPermission.STRENGTH_PERSISTABLE 7044 : UriPermission.STRENGTH_OWNED; 7045 7046 // Root gets to do everything. 7047 if (uid == 0) { 7048 return true; 7049 } 7050 7051 final ArrayMap<GrantUri, UriPermission> perms = mGrantedUriPermissions.get(uid); 7052 if (perms == null) return false; 7053 7054 // First look for exact match 7055 final UriPermission exactPerm = perms.get(grantUri); 7056 if (exactPerm != null && exactPerm.getStrength(modeFlags) >= minStrength) { 7057 return true; 7058 } 7059 7060 // No exact match, look for prefixes 7061 final int N = perms.size(); 7062 for (int i = 0; i < N; i++) { 7063 final UriPermission perm = perms.valueAt(i); 7064 if (perm.uri.prefix && grantUri.uri.isPathPrefixMatch(perm.uri.uri) 7065 && perm.getStrength(modeFlags) >= minStrength) { 7066 return true; 7067 } 7068 } 7069 7070 return false; 7071 } 7072 7073 /** 7074 * @param uri This uri must NOT contain an embedded userId. 7075 * @param userId The userId in which the uri is to be resolved. 7076 */ 7077 @Override 7078 public int checkUriPermission(Uri uri, int pid, int uid, 7079 final int modeFlags, int userId, IBinder callerToken) { 7080 enforceNotIsolatedCaller("checkUriPermission"); 7081 7082 // Another redirected-binder-call permissions check as in 7083 // {@link checkPermissionWithToken}. 7084 Identity tlsIdentity = sCallerIdentity.get(); 7085 if (tlsIdentity != null && tlsIdentity.token == callerToken) { 7086 uid = tlsIdentity.uid; 7087 pid = tlsIdentity.pid; 7088 } 7089 7090 // Our own process gets to do everything. 7091 if (pid == MY_PID) { 7092 return PackageManager.PERMISSION_GRANTED; 7093 } 7094 synchronized (this) { 7095 return checkUriPermissionLocked(new GrantUri(userId, uri, false), uid, modeFlags) 7096 ? PackageManager.PERMISSION_GRANTED 7097 : PackageManager.PERMISSION_DENIED; 7098 } 7099 } 7100 7101 /** 7102 * Check if the targetPkg can be granted permission to access uri by 7103 * the callingUid using the given modeFlags. Throws a security exception 7104 * if callingUid is not allowed to do this. Returns the uid of the target 7105 * if the URI permission grant should be performed; returns -1 if it is not 7106 * needed (for example targetPkg already has permission to access the URI). 7107 * If you already know the uid of the target, you can supply it in 7108 * lastTargetUid else set that to -1. 7109 */ 7110 int checkGrantUriPermissionLocked(int callingUid, String targetPkg, GrantUri grantUri, 7111 final int modeFlags, int lastTargetUid) { 7112 if (!Intent.isAccessUriMode(modeFlags)) { 7113 return -1; 7114 } 7115 7116 if (targetPkg != null) { 7117 if (DEBUG_URI_PERMISSION) Slog.v(TAG, 7118 "Checking grant " + targetPkg + " permission to " + grantUri); 7119 } 7120 7121 final IPackageManager pm = AppGlobals.getPackageManager(); 7122 7123 // If this is not a content: uri, we can't do anything with it. 7124 if (!ContentResolver.SCHEME_CONTENT.equals(grantUri.uri.getScheme())) { 7125 if (DEBUG_URI_PERMISSION) Slog.v(TAG, 7126 "Can't grant URI permission for non-content URI: " + grantUri); 7127 return -1; 7128 } 7129 7130 final String authority = grantUri.uri.getAuthority(); 7131 final ProviderInfo pi = getProviderInfoLocked(authority, grantUri.sourceUserId); 7132 if (pi == null) { 7133 Slog.w(TAG, "No content provider found for permission check: " + 7134 grantUri.uri.toSafeString()); 7135 return -1; 7136 } 7137 7138 int targetUid = lastTargetUid; 7139 if (targetUid < 0 && targetPkg != null) { 7140 try { 7141 targetUid = pm.getPackageUid(targetPkg, UserHandle.getUserId(callingUid)); 7142 if (targetUid < 0) { 7143 if (DEBUG_URI_PERMISSION) Slog.v(TAG, 7144 "Can't grant URI permission no uid for: " + targetPkg); 7145 return -1; 7146 } 7147 } catch (RemoteException ex) { 7148 return -1; 7149 } 7150 } 7151 7152 if (targetUid >= 0) { 7153 // First... does the target actually need this permission? 7154 if (checkHoldingPermissionsLocked(pm, pi, grantUri, targetUid, modeFlags)) { 7155 // No need to grant the target this permission. 7156 if (DEBUG_URI_PERMISSION) Slog.v(TAG, 7157 "Target " + targetPkg + " already has full permission to " + grantUri); 7158 return -1; 7159 } 7160 } else { 7161 // First... there is no target package, so can anyone access it? 7162 boolean allowed = pi.exported; 7163 if ((modeFlags&Intent.FLAG_GRANT_READ_URI_PERMISSION) != 0) { 7164 if (pi.readPermission != null) { 7165 allowed = false; 7166 } 7167 } 7168 if ((modeFlags&Intent.FLAG_GRANT_WRITE_URI_PERMISSION) != 0) { 7169 if (pi.writePermission != null) { 7170 allowed = false; 7171 } 7172 } 7173 if (allowed) { 7174 return -1; 7175 } 7176 } 7177 7178 /* There is a special cross user grant if: 7179 * - The target is on another user. 7180 * - Apps on the current user can access the uri without any uid permissions. 7181 * In this case, we grant a uri permission, even if the ContentProvider does not normally 7182 * grant uri permissions. 7183 */ 7184 boolean specialCrossUserGrant = UserHandle.getUserId(targetUid) != grantUri.sourceUserId 7185 && checkHoldingPermissionsInternalLocked(pm, pi, grantUri, callingUid, 7186 modeFlags, false /*without considering the uid permissions*/); 7187 7188 // Second... is the provider allowing granting of URI permissions? 7189 if (!specialCrossUserGrant) { 7190 if (!pi.grantUriPermissions) { 7191 throw new SecurityException("Provider " + pi.packageName 7192 + "/" + pi.name 7193 + " does not allow granting of Uri permissions (uri " 7194 + grantUri + ")"); 7195 } 7196 if (pi.uriPermissionPatterns != null) { 7197 final int N = pi.uriPermissionPatterns.length; 7198 boolean allowed = false; 7199 for (int i=0; i<N; i++) { 7200 if (pi.uriPermissionPatterns[i] != null 7201 && pi.uriPermissionPatterns[i].match(grantUri.uri.getPath())) { 7202 allowed = true; 7203 break; 7204 } 7205 } 7206 if (!allowed) { 7207 throw new SecurityException("Provider " + pi.packageName 7208 + "/" + pi.name 7209 + " does not allow granting of permission to path of Uri " 7210 + grantUri); 7211 } 7212 } 7213 } 7214 7215 // Third... does the caller itself have permission to access 7216 // this uri? 7217 if (UserHandle.getAppId(callingUid) != Process.SYSTEM_UID) { 7218 if (!checkHoldingPermissionsLocked(pm, pi, grantUri, callingUid, modeFlags)) { 7219 // Require they hold a strong enough Uri permission 7220 if (!checkUriPermissionLocked(grantUri, callingUid, modeFlags)) { 7221 throw new SecurityException("Uid " + callingUid 7222 + " does not have permission to uri " + grantUri); 7223 } 7224 } 7225 } 7226 return targetUid; 7227 } 7228 7229 /** 7230 * @param uri This uri must NOT contain an embedded userId. 7231 * @param userId The userId in which the uri is to be resolved. 7232 */ 7233 @Override 7234 public int checkGrantUriPermission(int callingUid, String targetPkg, Uri uri, 7235 final int modeFlags, int userId) { 7236 enforceNotIsolatedCaller("checkGrantUriPermission"); 7237 synchronized(this) { 7238 return checkGrantUriPermissionLocked(callingUid, targetPkg, 7239 new GrantUri(userId, uri, false), modeFlags, -1); 7240 } 7241 } 7242 7243 void grantUriPermissionUncheckedLocked(int targetUid, String targetPkg, GrantUri grantUri, 7244 final int modeFlags, UriPermissionOwner owner) { 7245 if (!Intent.isAccessUriMode(modeFlags)) { 7246 return; 7247 } 7248 7249 // So here we are: the caller has the assumed permission 7250 // to the uri, and the target doesn't. Let's now give this to 7251 // the target. 7252 7253 if (DEBUG_URI_PERMISSION) Slog.v(TAG, 7254 "Granting " + targetPkg + "/" + targetUid + " permission to " + grantUri); 7255 7256 final String authority = grantUri.uri.getAuthority(); 7257 final ProviderInfo pi = getProviderInfoLocked(authority, grantUri.sourceUserId); 7258 if (pi == null) { 7259 Slog.w(TAG, "No content provider found for grant: " + grantUri.toSafeString()); 7260 return; 7261 } 7262 7263 if ((modeFlags & Intent.FLAG_GRANT_PREFIX_URI_PERMISSION) != 0) { 7264 grantUri.prefix = true; 7265 } 7266 final UriPermission perm = findOrCreateUriPermissionLocked( 7267 pi.packageName, targetPkg, targetUid, grantUri); 7268 perm.grantModes(modeFlags, owner); 7269 } 7270 7271 void grantUriPermissionLocked(int callingUid, String targetPkg, GrantUri grantUri, 7272 final int modeFlags, UriPermissionOwner owner, int targetUserId) { 7273 if (targetPkg == null) { 7274 throw new NullPointerException("targetPkg"); 7275 } 7276 int targetUid; 7277 final IPackageManager pm = AppGlobals.getPackageManager(); 7278 try { 7279 targetUid = pm.getPackageUid(targetPkg, targetUserId); 7280 } catch (RemoteException ex) { 7281 return; 7282 } 7283 7284 targetUid = checkGrantUriPermissionLocked(callingUid, targetPkg, grantUri, modeFlags, 7285 targetUid); 7286 if (targetUid < 0) { 7287 return; 7288 } 7289 7290 grantUriPermissionUncheckedLocked(targetUid, targetPkg, grantUri, modeFlags, 7291 owner); 7292 } 7293 7294 static class NeededUriGrants extends ArrayList<GrantUri> { 7295 final String targetPkg; 7296 final int targetUid; 7297 final int flags; 7298 7299 NeededUriGrants(String targetPkg, int targetUid, int flags) { 7300 this.targetPkg = targetPkg; 7301 this.targetUid = targetUid; 7302 this.flags = flags; 7303 } 7304 } 7305 7306 /** 7307 * Like checkGrantUriPermissionLocked, but takes an Intent. 7308 */ 7309 NeededUriGrants checkGrantUriPermissionFromIntentLocked(int callingUid, 7310 String targetPkg, Intent intent, int mode, NeededUriGrants needed, int targetUserId) { 7311 if (DEBUG_URI_PERMISSION) Slog.v(TAG, 7312 "Checking URI perm to data=" + (intent != null ? intent.getData() : null) 7313 + " clip=" + (intent != null ? intent.getClipData() : null) 7314 + " from " + intent + "; flags=0x" 7315 + Integer.toHexString(intent != null ? intent.getFlags() : 0)); 7316 7317 if (targetPkg == null) { 7318 throw new NullPointerException("targetPkg"); 7319 } 7320 7321 if (intent == null) { 7322 return null; 7323 } 7324 Uri data = intent.getData(); 7325 ClipData clip = intent.getClipData(); 7326 if (data == null && clip == null) { 7327 return null; 7328 } 7329 // Default userId for uris in the intent (if they don't specify it themselves) 7330 int contentUserHint = intent.getContentUserHint(); 7331 if (contentUserHint == UserHandle.USER_CURRENT) { 7332 contentUserHint = UserHandle.getUserId(callingUid); 7333 } 7334 final IPackageManager pm = AppGlobals.getPackageManager(); 7335 int targetUid; 7336 if (needed != null) { 7337 targetUid = needed.targetUid; 7338 } else { 7339 try { 7340 targetUid = pm.getPackageUid(targetPkg, targetUserId); 7341 } catch (RemoteException ex) { 7342 return null; 7343 } 7344 if (targetUid < 0) { 7345 if (DEBUG_URI_PERMISSION) { 7346 Slog.v(TAG, "Can't grant URI permission no uid for: " + targetPkg 7347 + " on user " + targetUserId); 7348 } 7349 return null; 7350 } 7351 } 7352 if (data != null) { 7353 GrantUri grantUri = GrantUri.resolve(contentUserHint, data); 7354 targetUid = checkGrantUriPermissionLocked(callingUid, targetPkg, grantUri, mode, 7355 targetUid); 7356 if (targetUid > 0) { 7357 if (needed == null) { 7358 needed = new NeededUriGrants(targetPkg, targetUid, mode); 7359 } 7360 needed.add(grantUri); 7361 } 7362 } 7363 if (clip != null) { 7364 for (int i=0; i<clip.getItemCount(); i++) { 7365 Uri uri = clip.getItemAt(i).getUri(); 7366 if (uri != null) { 7367 GrantUri grantUri = GrantUri.resolve(contentUserHint, uri); 7368 targetUid = checkGrantUriPermissionLocked(callingUid, targetPkg, grantUri, mode, 7369 targetUid); 7370 if (targetUid > 0) { 7371 if (needed == null) { 7372 needed = new NeededUriGrants(targetPkg, targetUid, mode); 7373 } 7374 needed.add(grantUri); 7375 } 7376 } else { 7377 Intent clipIntent = clip.getItemAt(i).getIntent(); 7378 if (clipIntent != null) { 7379 NeededUriGrants newNeeded = checkGrantUriPermissionFromIntentLocked( 7380 callingUid, targetPkg, clipIntent, mode, needed, targetUserId); 7381 if (newNeeded != null) { 7382 needed = newNeeded; 7383 } 7384 } 7385 } 7386 } 7387 } 7388 7389 return needed; 7390 } 7391 7392 /** 7393 * Like grantUriPermissionUncheckedLocked, but takes an Intent. 7394 */ 7395 void grantUriPermissionUncheckedFromIntentLocked(NeededUriGrants needed, 7396 UriPermissionOwner owner) { 7397 if (needed != null) { 7398 for (int i=0; i<needed.size(); i++) { 7399 GrantUri grantUri = needed.get(i); 7400 grantUriPermissionUncheckedLocked(needed.targetUid, needed.targetPkg, 7401 grantUri, needed.flags, owner); 7402 } 7403 } 7404 } 7405 7406 void grantUriPermissionFromIntentLocked(int callingUid, 7407 String targetPkg, Intent intent, UriPermissionOwner owner, int targetUserId) { 7408 NeededUriGrants needed = checkGrantUriPermissionFromIntentLocked(callingUid, targetPkg, 7409 intent, intent != null ? intent.getFlags() : 0, null, targetUserId); 7410 if (needed == null) { 7411 return; 7412 } 7413 7414 grantUriPermissionUncheckedFromIntentLocked(needed, owner); 7415 } 7416 7417 /** 7418 * @param uri This uri must NOT contain an embedded userId. 7419 * @param userId The userId in which the uri is to be resolved. 7420 */ 7421 @Override 7422 public void grantUriPermission(IApplicationThread caller, String targetPkg, Uri uri, 7423 final int modeFlags, int userId) { 7424 enforceNotIsolatedCaller("grantUriPermission"); 7425 GrantUri grantUri = new GrantUri(userId, uri, false); 7426 synchronized(this) { 7427 final ProcessRecord r = getRecordForAppLocked(caller); 7428 if (r == null) { 7429 throw new SecurityException("Unable to find app for caller " 7430 + caller 7431 + " when granting permission to uri " + grantUri); 7432 } 7433 if (targetPkg == null) { 7434 throw new IllegalArgumentException("null target"); 7435 } 7436 if (grantUri == null) { 7437 throw new IllegalArgumentException("null uri"); 7438 } 7439 7440 Preconditions.checkFlagsArgument(modeFlags, Intent.FLAG_GRANT_READ_URI_PERMISSION 7441 | Intent.FLAG_GRANT_WRITE_URI_PERMISSION 7442 | Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION 7443 | Intent.FLAG_GRANT_PREFIX_URI_PERMISSION); 7444 7445 grantUriPermissionLocked(r.uid, targetPkg, grantUri, modeFlags, null, 7446 UserHandle.getUserId(r.uid)); 7447 } 7448 } 7449 7450 void removeUriPermissionIfNeededLocked(UriPermission perm) { 7451 if (perm.modeFlags == 0) { 7452 final ArrayMap<GrantUri, UriPermission> perms = mGrantedUriPermissions.get( 7453 perm.targetUid); 7454 if (perms != null) { 7455 if (DEBUG_URI_PERMISSION) Slog.v(TAG, 7456 "Removing " + perm.targetUid + " permission to " + perm.uri); 7457 7458 perms.remove(perm.uri); 7459 if (perms.isEmpty()) { 7460 mGrantedUriPermissions.remove(perm.targetUid); 7461 } 7462 } 7463 } 7464 } 7465 7466 private void revokeUriPermissionLocked(int callingUid, GrantUri grantUri, final int modeFlags) { 7467 if (DEBUG_URI_PERMISSION) Slog.v(TAG, "Revoking all granted permissions to " + grantUri); 7468 7469 final IPackageManager pm = AppGlobals.getPackageManager(); 7470 final String authority = grantUri.uri.getAuthority(); 7471 final ProviderInfo pi = getProviderInfoLocked(authority, grantUri.sourceUserId); 7472 if (pi == null) { 7473 Slog.w(TAG, "No content provider found for permission revoke: " 7474 + grantUri.toSafeString()); 7475 return; 7476 } 7477 7478 // Does the caller have this permission on the URI? 7479 if (!checkHoldingPermissionsLocked(pm, pi, grantUri, callingUid, modeFlags)) { 7480 // If they don't have direct access to the URI, then revoke any 7481 // ownerless URI permissions that have been granted to them. 7482 final ArrayMap<GrantUri, UriPermission> perms = mGrantedUriPermissions.get(callingUid); 7483 if (perms != null) { 7484 boolean persistChanged = false; 7485 for (Iterator<UriPermission> it = perms.values().iterator(); it.hasNext();) { 7486 final UriPermission perm = it.next(); 7487 if (perm.uri.sourceUserId == grantUri.sourceUserId 7488 && perm.uri.uri.isPathPrefixMatch(grantUri.uri)) { 7489 if (DEBUG_URI_PERMISSION) 7490 Slog.v(TAG, "Revoking non-owned " + perm.targetUid + 7491 " permission to " + perm.uri); 7492 persistChanged |= perm.revokeModes( 7493 modeFlags | Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION, false); 7494 if (perm.modeFlags == 0) { 7495 it.remove(); 7496 } 7497 } 7498 } 7499 if (perms.isEmpty()) { 7500 mGrantedUriPermissions.remove(callingUid); 7501 } 7502 if (persistChanged) { 7503 schedulePersistUriGrants(); 7504 } 7505 } 7506 return; 7507 } 7508 7509 boolean persistChanged = false; 7510 7511 // Go through all of the permissions and remove any that match. 7512 int N = mGrantedUriPermissions.size(); 7513 for (int i = 0; i < N; i++) { 7514 final int targetUid = mGrantedUriPermissions.keyAt(i); 7515 final ArrayMap<GrantUri, UriPermission> perms = mGrantedUriPermissions.valueAt(i); 7516 7517 for (Iterator<UriPermission> it = perms.values().iterator(); it.hasNext();) { 7518 final UriPermission perm = it.next(); 7519 if (perm.uri.sourceUserId == grantUri.sourceUserId 7520 && perm.uri.uri.isPathPrefixMatch(grantUri.uri)) { 7521 if (DEBUG_URI_PERMISSION) 7522 Slog.v(TAG, 7523 "Revoking " + perm.targetUid + " permission to " + perm.uri); 7524 persistChanged |= perm.revokeModes( 7525 modeFlags | Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION, true); 7526 if (perm.modeFlags == 0) { 7527 it.remove(); 7528 } 7529 } 7530 } 7531 7532 if (perms.isEmpty()) { 7533 mGrantedUriPermissions.remove(targetUid); 7534 N--; 7535 i--; 7536 } 7537 } 7538 7539 if (persistChanged) { 7540 schedulePersistUriGrants(); 7541 } 7542 } 7543 7544 /** 7545 * @param uri This uri must NOT contain an embedded userId. 7546 * @param userId The userId in which the uri is to be resolved. 7547 */ 7548 @Override 7549 public void revokeUriPermission(IApplicationThread caller, Uri uri, final int modeFlags, 7550 int userId) { 7551 enforceNotIsolatedCaller("revokeUriPermission"); 7552 synchronized(this) { 7553 final ProcessRecord r = getRecordForAppLocked(caller); 7554 if (r == null) { 7555 throw new SecurityException("Unable to find app for caller " 7556 + caller 7557 + " when revoking permission to uri " + uri); 7558 } 7559 if (uri == null) { 7560 Slog.w(TAG, "revokeUriPermission: null uri"); 7561 return; 7562 } 7563 7564 if (!Intent.isAccessUriMode(modeFlags)) { 7565 return; 7566 } 7567 7568 final IPackageManager pm = AppGlobals.getPackageManager(); 7569 final String authority = uri.getAuthority(); 7570 final ProviderInfo pi = getProviderInfoLocked(authority, userId); 7571 if (pi == null) { 7572 Slog.w(TAG, "No content provider found for permission revoke: " 7573 + uri.toSafeString()); 7574 return; 7575 } 7576 7577 revokeUriPermissionLocked(r.uid, new GrantUri(userId, uri, false), modeFlags); 7578 } 7579 } 7580 7581 /** 7582 * Remove any {@link UriPermission} granted <em>from</em> or <em>to</em> the 7583 * given package. 7584 * 7585 * @param packageName Package name to match, or {@code null} to apply to all 7586 * packages. 7587 * @param userHandle User to match, or {@link UserHandle#USER_ALL} to apply 7588 * to all users. 7589 * @param persistable If persistable grants should be removed. 7590 */ 7591 private void removeUriPermissionsForPackageLocked( 7592 String packageName, int userHandle, boolean persistable) { 7593 if (userHandle == UserHandle.USER_ALL && packageName == null) { 7594 throw new IllegalArgumentException("Must narrow by either package or user"); 7595 } 7596 7597 boolean persistChanged = false; 7598 7599 int N = mGrantedUriPermissions.size(); 7600 for (int i = 0; i < N; i++) { 7601 final int targetUid = mGrantedUriPermissions.keyAt(i); 7602 final ArrayMap<GrantUri, UriPermission> perms = mGrantedUriPermissions.valueAt(i); 7603 7604 // Only inspect grants matching user 7605 if (userHandle == UserHandle.USER_ALL 7606 || userHandle == UserHandle.getUserId(targetUid)) { 7607 for (Iterator<UriPermission> it = perms.values().iterator(); it.hasNext();) { 7608 final UriPermission perm = it.next(); 7609 7610 // Only inspect grants matching package 7611 if (packageName == null || perm.sourcePkg.equals(packageName) 7612 || perm.targetPkg.equals(packageName)) { 7613 persistChanged |= perm.revokeModes(persistable 7614 ? ~0 : ~Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION, true); 7615 7616 // Only remove when no modes remain; any persisted grants 7617 // will keep this alive. 7618 if (perm.modeFlags == 0) { 7619 it.remove(); 7620 } 7621 } 7622 } 7623 7624 if (perms.isEmpty()) { 7625 mGrantedUriPermissions.remove(targetUid); 7626 N--; 7627 i--; 7628 } 7629 } 7630 } 7631 7632 if (persistChanged) { 7633 schedulePersistUriGrants(); 7634 } 7635 } 7636 7637 @Override 7638 public IBinder newUriPermissionOwner(String name) { 7639 enforceNotIsolatedCaller("newUriPermissionOwner"); 7640 synchronized(this) { 7641 UriPermissionOwner owner = new UriPermissionOwner(this, name); 7642 return owner.getExternalTokenLocked(); 7643 } 7644 } 7645 7646 /** 7647 * @param uri This uri must NOT contain an embedded userId. 7648 * @param sourceUserId The userId in which the uri is to be resolved. 7649 * @param targetUserId The userId of the app that receives the grant. 7650 */ 7651 @Override 7652 public void grantUriPermissionFromOwner(IBinder token, int fromUid, String targetPkg, Uri uri, 7653 final int modeFlags, int sourceUserId, int targetUserId) { 7654 targetUserId = handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), 7655 targetUserId, false, ALLOW_FULL_ONLY, "grantUriPermissionFromOwner", null); 7656 synchronized(this) { 7657 UriPermissionOwner owner = UriPermissionOwner.fromExternalToken(token); 7658 if (owner == null) { 7659 throw new IllegalArgumentException("Unknown owner: " + token); 7660 } 7661 if (fromUid != Binder.getCallingUid()) { 7662 if (Binder.getCallingUid() != Process.myUid()) { 7663 // Only system code can grant URI permissions on behalf 7664 // of other users. 7665 throw new SecurityException("nice try"); 7666 } 7667 } 7668 if (targetPkg == null) { 7669 throw new IllegalArgumentException("null target"); 7670 } 7671 if (uri == null) { 7672 throw new IllegalArgumentException("null uri"); 7673 } 7674 7675 grantUriPermissionLocked(fromUid, targetPkg, new GrantUri(sourceUserId, uri, false), 7676 modeFlags, owner, targetUserId); 7677 } 7678 } 7679 7680 /** 7681 * @param uri This uri must NOT contain an embedded userId. 7682 * @param userId The userId in which the uri is to be resolved. 7683 */ 7684 @Override 7685 public void revokeUriPermissionFromOwner(IBinder token, Uri uri, int mode, int userId) { 7686 synchronized(this) { 7687 UriPermissionOwner owner = UriPermissionOwner.fromExternalToken(token); 7688 if (owner == null) { 7689 throw new IllegalArgumentException("Unknown owner: " + token); 7690 } 7691 7692 if (uri == null) { 7693 owner.removeUriPermissionsLocked(mode); 7694 } else { 7695 owner.removeUriPermissionLocked(new GrantUri(userId, uri, false), mode); 7696 } 7697 } 7698 } 7699 7700 private void schedulePersistUriGrants() { 7701 if (!mHandler.hasMessages(PERSIST_URI_GRANTS_MSG)) { 7702 mHandler.sendMessageDelayed(mHandler.obtainMessage(PERSIST_URI_GRANTS_MSG), 7703 10 * DateUtils.SECOND_IN_MILLIS); 7704 } 7705 } 7706 7707 private void writeGrantedUriPermissions() { 7708 if (DEBUG_URI_PERMISSION) Slog.v(TAG, "writeGrantedUriPermissions()"); 7709 7710 // Snapshot permissions so we can persist without lock 7711 ArrayList<UriPermission.Snapshot> persist = Lists.newArrayList(); 7712 synchronized (this) { 7713 final int size = mGrantedUriPermissions.size(); 7714 for (int i = 0; i < size; i++) { 7715 final ArrayMap<GrantUri, UriPermission> perms = mGrantedUriPermissions.valueAt(i); 7716 for (UriPermission perm : perms.values()) { 7717 if (perm.persistedModeFlags != 0) { 7718 persist.add(perm.snapshot()); 7719 } 7720 } 7721 } 7722 } 7723 7724 FileOutputStream fos = null; 7725 try { 7726 fos = mGrantFile.startWrite(); 7727 7728 XmlSerializer out = new FastXmlSerializer(); 7729 out.setOutput(fos, "utf-8"); 7730 out.startDocument(null, true); 7731 out.startTag(null, TAG_URI_GRANTS); 7732 for (UriPermission.Snapshot perm : persist) { 7733 out.startTag(null, TAG_URI_GRANT); 7734 writeIntAttribute(out, ATTR_SOURCE_USER_ID, perm.uri.sourceUserId); 7735 writeIntAttribute(out, ATTR_TARGET_USER_ID, perm.targetUserId); 7736 out.attribute(null, ATTR_SOURCE_PKG, perm.sourcePkg); 7737 out.attribute(null, ATTR_TARGET_PKG, perm.targetPkg); 7738 out.attribute(null, ATTR_URI, String.valueOf(perm.uri.uri)); 7739 writeBooleanAttribute(out, ATTR_PREFIX, perm.uri.prefix); 7740 writeIntAttribute(out, ATTR_MODE_FLAGS, perm.persistedModeFlags); 7741 writeLongAttribute(out, ATTR_CREATED_TIME, perm.persistedCreateTime); 7742 out.endTag(null, TAG_URI_GRANT); 7743 } 7744 out.endTag(null, TAG_URI_GRANTS); 7745 out.endDocument(); 7746 7747 mGrantFile.finishWrite(fos); 7748 } catch (IOException e) { 7749 if (fos != null) { 7750 mGrantFile.failWrite(fos); 7751 } 7752 } 7753 } 7754 7755 private void readGrantedUriPermissionsLocked() { 7756 if (DEBUG_URI_PERMISSION) Slog.v(TAG, "readGrantedUriPermissions()"); 7757 7758 final long now = System.currentTimeMillis(); 7759 7760 FileInputStream fis = null; 7761 try { 7762 fis = mGrantFile.openRead(); 7763 final XmlPullParser in = Xml.newPullParser(); 7764 in.setInput(fis, null); 7765 7766 int type; 7767 while ((type = in.next()) != END_DOCUMENT) { 7768 final String tag = in.getName(); 7769 if (type == START_TAG) { 7770 if (TAG_URI_GRANT.equals(tag)) { 7771 final int sourceUserId; 7772 final int targetUserId; 7773 final int userHandle = readIntAttribute(in, 7774 ATTR_USER_HANDLE, UserHandle.USER_NULL); 7775 if (userHandle != UserHandle.USER_NULL) { 7776 // For backwards compatibility. 7777 sourceUserId = userHandle; 7778 targetUserId = userHandle; 7779 } else { 7780 sourceUserId = readIntAttribute(in, ATTR_SOURCE_USER_ID); 7781 targetUserId = readIntAttribute(in, ATTR_TARGET_USER_ID); 7782 } 7783 final String sourcePkg = in.getAttributeValue(null, ATTR_SOURCE_PKG); 7784 final String targetPkg = in.getAttributeValue(null, ATTR_TARGET_PKG); 7785 final Uri uri = Uri.parse(in.getAttributeValue(null, ATTR_URI)); 7786 final boolean prefix = readBooleanAttribute(in, ATTR_PREFIX); 7787 final int modeFlags = readIntAttribute(in, ATTR_MODE_FLAGS); 7788 final long createdTime = readLongAttribute(in, ATTR_CREATED_TIME, now); 7789 7790 // Sanity check that provider still belongs to source package 7791 final ProviderInfo pi = getProviderInfoLocked( 7792 uri.getAuthority(), sourceUserId); 7793 if (pi != null && sourcePkg.equals(pi.packageName)) { 7794 int targetUid = -1; 7795 try { 7796 targetUid = AppGlobals.getPackageManager() 7797 .getPackageUid(targetPkg, targetUserId); 7798 } catch (RemoteException e) { 7799 } 7800 if (targetUid != -1) { 7801 final UriPermission perm = findOrCreateUriPermissionLocked( 7802 sourcePkg, targetPkg, targetUid, 7803 new GrantUri(sourceUserId, uri, prefix)); 7804 perm.initPersistedModes(modeFlags, createdTime); 7805 } 7806 } else { 7807 Slog.w(TAG, "Persisted grant for " + uri + " had source " + sourcePkg 7808 + " but instead found " + pi); 7809 } 7810 } 7811 } 7812 } 7813 } catch (FileNotFoundException e) { 7814 // Missing grants is okay 7815 } catch (IOException e) { 7816 Slog.wtf(TAG, "Failed reading Uri grants", e); 7817 } catch (XmlPullParserException e) { 7818 Slog.wtf(TAG, "Failed reading Uri grants", e); 7819 } finally { 7820 IoUtils.closeQuietly(fis); 7821 } 7822 } 7823 7824 /** 7825 * @param uri This uri must NOT contain an embedded userId. 7826 * @param userId The userId in which the uri is to be resolved. 7827 */ 7828 @Override 7829 public void takePersistableUriPermission(Uri uri, final int modeFlags, int userId) { 7830 enforceNotIsolatedCaller("takePersistableUriPermission"); 7831 7832 Preconditions.checkFlagsArgument(modeFlags, 7833 Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION); 7834 7835 synchronized (this) { 7836 final int callingUid = Binder.getCallingUid(); 7837 boolean persistChanged = false; 7838 GrantUri grantUri = new GrantUri(userId, uri, false); 7839 7840 UriPermission exactPerm = findUriPermissionLocked(callingUid, 7841 new GrantUri(userId, uri, false)); 7842 UriPermission prefixPerm = findUriPermissionLocked(callingUid, 7843 new GrantUri(userId, uri, true)); 7844 7845 final boolean exactValid = (exactPerm != null) 7846 && ((modeFlags & exactPerm.persistableModeFlags) == modeFlags); 7847 final boolean prefixValid = (prefixPerm != null) 7848 && ((modeFlags & prefixPerm.persistableModeFlags) == modeFlags); 7849 7850 if (!(exactValid || prefixValid)) { 7851 throw new SecurityException("No persistable permission grants found for UID " 7852 + callingUid + " and Uri " + grantUri.toSafeString()); 7853 } 7854 7855 if (exactValid) { 7856 persistChanged |= exactPerm.takePersistableModes(modeFlags); 7857 } 7858 if (prefixValid) { 7859 persistChanged |= prefixPerm.takePersistableModes(modeFlags); 7860 } 7861 7862 persistChanged |= maybePrunePersistedUriGrantsLocked(callingUid); 7863 7864 if (persistChanged) { 7865 schedulePersistUriGrants(); 7866 } 7867 } 7868 } 7869 7870 /** 7871 * @param uri This uri must NOT contain an embedded userId. 7872 * @param userId The userId in which the uri is to be resolved. 7873 */ 7874 @Override 7875 public void releasePersistableUriPermission(Uri uri, final int modeFlags, int userId) { 7876 enforceNotIsolatedCaller("releasePersistableUriPermission"); 7877 7878 Preconditions.checkFlagsArgument(modeFlags, 7879 Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION); 7880 7881 synchronized (this) { 7882 final int callingUid = Binder.getCallingUid(); 7883 boolean persistChanged = false; 7884 7885 UriPermission exactPerm = findUriPermissionLocked(callingUid, 7886 new GrantUri(userId, uri, false)); 7887 UriPermission prefixPerm = findUriPermissionLocked(callingUid, 7888 new GrantUri(userId, uri, true)); 7889 if (exactPerm == null && prefixPerm == null) { 7890 throw new SecurityException("No permission grants found for UID " + callingUid 7891 + " and Uri " + uri.toSafeString()); 7892 } 7893 7894 if (exactPerm != null) { 7895 persistChanged |= exactPerm.releasePersistableModes(modeFlags); 7896 removeUriPermissionIfNeededLocked(exactPerm); 7897 } 7898 if (prefixPerm != null) { 7899 persistChanged |= prefixPerm.releasePersistableModes(modeFlags); 7900 removeUriPermissionIfNeededLocked(prefixPerm); 7901 } 7902 7903 if (persistChanged) { 7904 schedulePersistUriGrants(); 7905 } 7906 } 7907 } 7908 7909 /** 7910 * Prune any older {@link UriPermission} for the given UID until outstanding 7911 * persisted grants are below {@link #MAX_PERSISTED_URI_GRANTS}. 7912 * 7913 * @return if any mutations occured that require persisting. 7914 */ 7915 private boolean maybePrunePersistedUriGrantsLocked(int uid) { 7916 final ArrayMap<GrantUri, UriPermission> perms = mGrantedUriPermissions.get(uid); 7917 if (perms == null) return false; 7918 if (perms.size() < MAX_PERSISTED_URI_GRANTS) return false; 7919 7920 final ArrayList<UriPermission> persisted = Lists.newArrayList(); 7921 for (UriPermission perm : perms.values()) { 7922 if (perm.persistedModeFlags != 0) { 7923 persisted.add(perm); 7924 } 7925 } 7926 7927 final int trimCount = persisted.size() - MAX_PERSISTED_URI_GRANTS; 7928 if (trimCount <= 0) return false; 7929 7930 Collections.sort(persisted, new UriPermission.PersistedTimeComparator()); 7931 for (int i = 0; i < trimCount; i++) { 7932 final UriPermission perm = persisted.get(i); 7933 7934 if (DEBUG_URI_PERMISSION) { 7935 Slog.v(TAG, "Trimming grant created at " + perm.persistedCreateTime); 7936 } 7937 7938 perm.releasePersistableModes(~0); 7939 removeUriPermissionIfNeededLocked(perm); 7940 } 7941 7942 return true; 7943 } 7944 7945 @Override 7946 public ParceledListSlice<android.content.UriPermission> getPersistedUriPermissions( 7947 String packageName, boolean incoming) { 7948 enforceNotIsolatedCaller("getPersistedUriPermissions"); 7949 Preconditions.checkNotNull(packageName, "packageName"); 7950 7951 final int callingUid = Binder.getCallingUid(); 7952 final IPackageManager pm = AppGlobals.getPackageManager(); 7953 try { 7954 final int packageUid = pm.getPackageUid(packageName, UserHandle.getUserId(callingUid)); 7955 if (packageUid != callingUid) { 7956 throw new SecurityException( 7957 "Package " + packageName + " does not belong to calling UID " + callingUid); 7958 } 7959 } catch (RemoteException e) { 7960 throw new SecurityException("Failed to verify package name ownership"); 7961 } 7962 7963 final ArrayList<android.content.UriPermission> result = Lists.newArrayList(); 7964 synchronized (this) { 7965 if (incoming) { 7966 final ArrayMap<GrantUri, UriPermission> perms = mGrantedUriPermissions.get( 7967 callingUid); 7968 if (perms == null) { 7969 Slog.w(TAG, "No permission grants found for " + packageName); 7970 } else { 7971 for (UriPermission perm : perms.values()) { 7972 if (packageName.equals(perm.targetPkg) && perm.persistedModeFlags != 0) { 7973 result.add(perm.buildPersistedPublicApiObject()); 7974 } 7975 } 7976 } 7977 } else { 7978 final int size = mGrantedUriPermissions.size(); 7979 for (int i = 0; i < size; i++) { 7980 final ArrayMap<GrantUri, UriPermission> perms = 7981 mGrantedUriPermissions.valueAt(i); 7982 for (UriPermission perm : perms.values()) { 7983 if (packageName.equals(perm.sourcePkg) && perm.persistedModeFlags != 0) { 7984 result.add(perm.buildPersistedPublicApiObject()); 7985 } 7986 } 7987 } 7988 } 7989 } 7990 return new ParceledListSlice<android.content.UriPermission>(result); 7991 } 7992 7993 @Override 7994 public void showWaitingForDebugger(IApplicationThread who, boolean waiting) { 7995 synchronized (this) { 7996 ProcessRecord app = 7997 who != null ? getRecordForAppLocked(who) : null; 7998 if (app == null) return; 7999 8000 Message msg = Message.obtain(); 8001 msg.what = WAIT_FOR_DEBUGGER_MSG; 8002 msg.obj = app; 8003 msg.arg1 = waiting ? 1 : 0; 8004 mHandler.sendMessage(msg); 8005 } 8006 } 8007 8008 @Override 8009 public void getMemoryInfo(ActivityManager.MemoryInfo outInfo) { 8010 final long homeAppMem = mProcessList.getMemLevel(ProcessList.HOME_APP_ADJ); 8011 final long cachedAppMem = mProcessList.getMemLevel(ProcessList.CACHED_APP_MIN_ADJ); 8012 outInfo.availMem = Process.getFreeMemory(); 8013 outInfo.totalMem = Process.getTotalMemory(); 8014 outInfo.threshold = homeAppMem; 8015 outInfo.lowMemory = outInfo.availMem < (homeAppMem + ((cachedAppMem-homeAppMem)/2)); 8016 outInfo.hiddenAppThreshold = cachedAppMem; 8017 outInfo.secondaryServerThreshold = mProcessList.getMemLevel( 8018 ProcessList.SERVICE_ADJ); 8019 outInfo.visibleAppThreshold = mProcessList.getMemLevel( 8020 ProcessList.VISIBLE_APP_ADJ); 8021 outInfo.foregroundAppThreshold = mProcessList.getMemLevel( 8022 ProcessList.FOREGROUND_APP_ADJ); 8023 } 8024 8025 // ========================================================= 8026 // TASK MANAGEMENT 8027 // ========================================================= 8028 8029 @Override 8030 public List<IAppTask> getAppTasks(String callingPackage) { 8031 int callingUid = Binder.getCallingUid(); 8032 long ident = Binder.clearCallingIdentity(); 8033 8034 synchronized(this) { 8035 ArrayList<IAppTask> list = new ArrayList<IAppTask>(); 8036 try { 8037 if (localLOGV) Slog.v(TAG, "getAppTasks"); 8038 8039 final int N = mRecentTasks.size(); 8040 for (int i = 0; i < N; i++) { 8041 TaskRecord tr = mRecentTasks.get(i); 8042 // Skip tasks that do not match the caller. We don't need to verify 8043 // callingPackage, because we are also limiting to callingUid and know 8044 // that will limit to the correct security sandbox. 8045 if (tr.effectiveUid != callingUid) { 8046 continue; 8047 } 8048 Intent intent = tr.getBaseIntent(); 8049 if (intent == null || 8050 !callingPackage.equals(intent.getComponent().getPackageName())) { 8051 continue; 8052 } 8053 ActivityManager.RecentTaskInfo taskInfo = 8054 createRecentTaskInfoFromTaskRecord(tr); 8055 AppTaskImpl taskImpl = new AppTaskImpl(taskInfo.persistentId, callingUid); 8056 list.add(taskImpl); 8057 } 8058 } finally { 8059 Binder.restoreCallingIdentity(ident); 8060 } 8061 return list; 8062 } 8063 } 8064 8065 @Override 8066 public List<RunningTaskInfo> getTasks(int maxNum, int flags) { 8067 final int callingUid = Binder.getCallingUid(); 8068 ArrayList<RunningTaskInfo> list = new ArrayList<RunningTaskInfo>(); 8069 8070 synchronized(this) { 8071 if (localLOGV) Slog.v( 8072 TAG, "getTasks: max=" + maxNum + ", flags=" + flags); 8073 8074 final boolean allowed = isGetTasksAllowed("getTasks", Binder.getCallingPid(), 8075 callingUid); 8076 8077 // TODO: Improve with MRU list from all ActivityStacks. 8078 mStackSupervisor.getTasksLocked(maxNum, list, callingUid, allowed); 8079 } 8080 8081 return list; 8082 } 8083 8084 /** 8085 * Creates a new RecentTaskInfo from a TaskRecord. 8086 */ 8087 private ActivityManager.RecentTaskInfo createRecentTaskInfoFromTaskRecord(TaskRecord tr) { 8088 // Update the task description to reflect any changes in the task stack 8089 tr.updateTaskDescription(); 8090 8091 // Compose the recent task info 8092 ActivityManager.RecentTaskInfo rti = new ActivityManager.RecentTaskInfo(); 8093 rti.id = tr.getTopActivity() == null ? INVALID_TASK_ID : tr.taskId; 8094 rti.persistentId = tr.taskId; 8095 rti.baseIntent = new Intent(tr.getBaseIntent()); 8096 rti.origActivity = tr.origActivity; 8097 rti.description = tr.lastDescription; 8098 rti.stackId = tr.stack != null ? tr.stack.mStackId : -1; 8099 rti.userId = tr.userId; 8100 rti.taskDescription = new ActivityManager.TaskDescription(tr.lastTaskDescription); 8101 rti.firstActiveTime = tr.firstActiveTime; 8102 rti.lastActiveTime = tr.lastActiveTime; 8103 rti.affiliatedTaskId = tr.mAffiliatedTaskId; 8104 rti.affiliatedTaskColor = tr.mAffiliatedTaskColor; 8105 return rti; 8106 } 8107 8108 private boolean isGetTasksAllowed(String caller, int callingPid, int callingUid) { 8109 boolean allowed = checkPermission(android.Manifest.permission.REAL_GET_TASKS, 8110 callingPid, callingUid) == PackageManager.PERMISSION_GRANTED; 8111 if (!allowed) { 8112 if (checkPermission(android.Manifest.permission.GET_TASKS, 8113 callingPid, callingUid) == PackageManager.PERMISSION_GRANTED) { 8114 // Temporary compatibility: some existing apps on the system image may 8115 // still be requesting the old permission and not switched to the new 8116 // one; if so, we'll still allow them full access. This means we need 8117 // to see if they are holding the old permission and are a system app. 8118 try { 8119 if (AppGlobals.getPackageManager().isUidPrivileged(callingUid)) { 8120 allowed = true; 8121 Slog.w(TAG, caller + ": caller " + callingUid 8122 + " is using old GET_TASKS but privileged; allowing"); 8123 } 8124 } catch (RemoteException e) { 8125 } 8126 } 8127 } 8128 if (!allowed) { 8129 Slog.w(TAG, caller + ": caller " + callingUid 8130 + " does not hold REAL_GET_TASKS; limiting output"); 8131 } 8132 return allowed; 8133 } 8134 8135 @Override 8136 public List<ActivityManager.RecentTaskInfo> getRecentTasks(int maxNum, int flags, int userId) { 8137 final int callingUid = Binder.getCallingUid(); 8138 userId = handleIncomingUser(Binder.getCallingPid(), callingUid, userId, 8139 false, ALLOW_FULL_ONLY, "getRecentTasks", null); 8140 8141 final boolean includeProfiles = (flags & ActivityManager.RECENT_INCLUDE_PROFILES) != 0; 8142 final boolean withExcluded = (flags&ActivityManager.RECENT_WITH_EXCLUDED) != 0; 8143 synchronized (this) { 8144 final boolean allowed = isGetTasksAllowed("getRecentTasks", Binder.getCallingPid(), 8145 callingUid); 8146 final boolean detailed = checkCallingPermission( 8147 android.Manifest.permission.GET_DETAILED_TASKS) 8148 == PackageManager.PERMISSION_GRANTED; 8149 8150 final int N = mRecentTasks.size(); 8151 ArrayList<ActivityManager.RecentTaskInfo> res 8152 = new ArrayList<ActivityManager.RecentTaskInfo>( 8153 maxNum < N ? maxNum : N); 8154 8155 final Set<Integer> includedUsers; 8156 if (includeProfiles) { 8157 includedUsers = getProfileIdsLocked(userId); 8158 } else { 8159 includedUsers = new HashSet<Integer>(); 8160 } 8161 includedUsers.add(Integer.valueOf(userId)); 8162 8163 for (int i=0; i<N && maxNum > 0; i++) { 8164 TaskRecord tr = mRecentTasks.get(i); 8165 // Only add calling user or related users recent tasks 8166 if (!includedUsers.contains(Integer.valueOf(tr.userId))) { 8167 if (DEBUG_RECENTS) Slog.d(TAG, "Skipping, not user: " + tr); 8168 continue; 8169 } 8170 8171 // Return the entry if desired by the caller. We always return 8172 // the first entry, because callers always expect this to be the 8173 // foreground app. We may filter others if the caller has 8174 // not supplied RECENT_WITH_EXCLUDED and there is some reason 8175 // we should exclude the entry. 8176 8177 if (i == 0 8178 || withExcluded 8179 || (tr.intent == null) 8180 || ((tr.intent.getFlags() & Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) 8181 == 0)) { 8182 if (!allowed) { 8183 // If the caller doesn't have the GET_TASKS permission, then only 8184 // allow them to see a small subset of tasks -- their own and home. 8185 if (!tr.isHomeTask() && tr.effectiveUid != callingUid) { 8186 if (DEBUG_RECENTS) Slog.d(TAG, "Skipping, not allowed: " + tr); 8187 continue; 8188 } 8189 } 8190 if ((flags & ActivityManager.RECENT_IGNORE_HOME_STACK_TASKS) != 0) { 8191 if (tr.stack != null && tr.stack.isHomeStack()) { 8192 if (DEBUG_RECENTS) Slog.d(TAG, "Skipping, home stack task: " + tr); 8193 continue; 8194 } 8195 } 8196 if (tr.autoRemoveRecents && tr.getTopActivity() == null) { 8197 // Don't include auto remove tasks that are finished or finishing. 8198 if (DEBUG_RECENTS) Slog.d(TAG, "Skipping, auto-remove without activity: " 8199 + tr); 8200 continue; 8201 } 8202 if ((flags&ActivityManager.RECENT_IGNORE_UNAVAILABLE) != 0 8203 && !tr.isAvailable) { 8204 if (DEBUG_RECENTS) Slog.d(TAG, "Skipping, unavail real act: " + tr); 8205 continue; 8206 } 8207 8208 ActivityManager.RecentTaskInfo rti = createRecentTaskInfoFromTaskRecord(tr); 8209 if (!detailed) { 8210 rti.baseIntent.replaceExtras((Bundle)null); 8211 } 8212 8213 res.add(rti); 8214 maxNum--; 8215 } 8216 } 8217 return res; 8218 } 8219 } 8220 8221 TaskRecord recentTaskForIdLocked(int id) { 8222 final int N = mRecentTasks.size(); 8223 for (int i=0; i<N; i++) { 8224 TaskRecord tr = mRecentTasks.get(i); 8225 if (tr.taskId == id) { 8226 return tr; 8227 } 8228 } 8229 return null; 8230 } 8231 8232 @Override 8233 public ActivityManager.TaskThumbnail getTaskThumbnail(int id) { 8234 synchronized (this) { 8235 enforceCallingPermission(android.Manifest.permission.READ_FRAME_BUFFER, 8236 "getTaskThumbnail()"); 8237 TaskRecord tr = mStackSupervisor.anyTaskForIdLocked(id); 8238 if (tr != null) { 8239 return tr.getTaskThumbnailLocked(); 8240 } 8241 } 8242 return null; 8243 } 8244 8245 @Override 8246 public int addAppTask(IBinder activityToken, Intent intent, 8247 ActivityManager.TaskDescription description, Bitmap thumbnail) throws RemoteException { 8248 final int callingUid = Binder.getCallingUid(); 8249 final long callingIdent = Binder.clearCallingIdentity(); 8250 8251 try { 8252 synchronized (this) { 8253 ActivityRecord r = ActivityRecord.isInStackLocked(activityToken); 8254 if (r == null) { 8255 throw new IllegalArgumentException("Activity does not exist; token=" 8256 + activityToken); 8257 } 8258 ComponentName comp = intent.getComponent(); 8259 if (comp == null) { 8260 throw new IllegalArgumentException("Intent " + intent 8261 + " must specify explicit component"); 8262 } 8263 if (thumbnail.getWidth() != mThumbnailWidth 8264 || thumbnail.getHeight() != mThumbnailHeight) { 8265 throw new IllegalArgumentException("Bad thumbnail size: got " 8266 + thumbnail.getWidth() + "x" + thumbnail.getHeight() + ", require " 8267 + mThumbnailWidth + "x" + mThumbnailHeight); 8268 } 8269 if (intent.getSelector() != null) { 8270 intent.setSelector(null); 8271 } 8272 if (intent.getSourceBounds() != null) { 8273 intent.setSourceBounds(null); 8274 } 8275 if ((intent.getFlags()&Intent.FLAG_ACTIVITY_NEW_DOCUMENT) != 0) { 8276 if ((intent.getFlags()&Intent.FLAG_ACTIVITY_RETAIN_IN_RECENTS) == 0) { 8277 // The caller has added this as an auto-remove task... that makes no 8278 // sense, so turn off auto-remove. 8279 intent.addFlags(Intent.FLAG_ACTIVITY_RETAIN_IN_RECENTS); 8280 } 8281 } else if ((intent.getFlags()&Intent.FLAG_ACTIVITY_NEW_TASK) != 0) { 8282 // Must be a new task. 8283 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 8284 } 8285 if (!comp.equals(mLastAddedTaskComponent) || callingUid != mLastAddedTaskUid) { 8286 mLastAddedTaskActivity = null; 8287 } 8288 ActivityInfo ainfo = mLastAddedTaskActivity; 8289 if (ainfo == null) { 8290 ainfo = mLastAddedTaskActivity = AppGlobals.getPackageManager().getActivityInfo( 8291 comp, 0, UserHandle.getUserId(callingUid)); 8292 if (ainfo.applicationInfo.uid != callingUid) { 8293 throw new SecurityException( 8294 "Can't add task for another application: target uid=" 8295 + ainfo.applicationInfo.uid + ", calling uid=" + callingUid); 8296 } 8297 } 8298 8299 TaskRecord task = new TaskRecord(this, mStackSupervisor.getNextTaskId(), ainfo, 8300 intent, description); 8301 8302 int trimIdx = trimRecentsForTaskLocked(task, false); 8303 if (trimIdx >= 0) { 8304 // If this would have caused a trim, then we'll abort because that 8305 // means it would be added at the end of the list but then just removed. 8306 return INVALID_TASK_ID; 8307 } 8308 8309 final int N = mRecentTasks.size(); 8310 if (N >= (ActivityManager.getMaxRecentTasksStatic()-1)) { 8311 final TaskRecord tr = mRecentTasks.remove(N - 1); 8312 tr.removedFromRecents(); 8313 } 8314 8315 task.inRecents = true; 8316 mRecentTasks.add(task); 8317 r.task.stack.addTask(task, false, false); 8318 8319 task.setLastThumbnail(thumbnail); 8320 task.freeLastThumbnail(); 8321 8322 return task.taskId; 8323 } 8324 } finally { 8325 Binder.restoreCallingIdentity(callingIdent); 8326 } 8327 } 8328 8329 @Override 8330 public Point getAppTaskThumbnailSize() { 8331 synchronized (this) { 8332 return new Point(mThumbnailWidth, mThumbnailHeight); 8333 } 8334 } 8335 8336 @Override 8337 public void setTaskDescription(IBinder token, ActivityManager.TaskDescription td) { 8338 synchronized (this) { 8339 ActivityRecord r = ActivityRecord.isInStackLocked(token); 8340 if (r != null) { 8341 r.setTaskDescription(td); 8342 r.task.updateTaskDescription(); 8343 } 8344 } 8345 } 8346 8347 @Override 8348 public Bitmap getTaskDescriptionIcon(String filename) { 8349 if (!FileUtils.isValidExtFilename(filename) 8350 || !filename.contains(ActivityRecord.ACTIVITY_ICON_SUFFIX)) { 8351 throw new IllegalArgumentException("Bad filename: " + filename); 8352 } 8353 return mTaskPersister.getTaskDescriptionIcon(filename); 8354 } 8355 8356 @Override 8357 public void startInPlaceAnimationOnFrontMostApplication(ActivityOptions opts) 8358 throws RemoteException { 8359 if (opts.getAnimationType() != ActivityOptions.ANIM_CUSTOM_IN_PLACE || 8360