Fyodor Kupolov | 610acda | 2015-10-19 18:44:07 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2015 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.app.ActivityManager.USER_OP_IS_CURRENT; |
| 22 | import static android.app.ActivityManager.USER_OP_SUCCESS; |
| 23 | import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_MU; |
| 24 | import static com.android.server.am.ActivityManagerDebugConfig.TAG_AM; |
| 25 | import static com.android.server.am.ActivityManagerDebugConfig.TAG_WITH_CLASS_NAME; |
| 26 | import static com.android.server.am.ActivityManagerService.REPORT_USER_SWITCH_COMPLETE_MSG; |
| 27 | import static com.android.server.am.ActivityManagerService.REPORT_USER_SWITCH_MSG; |
| 28 | import static com.android.server.am.ActivityManagerService.SYSTEM_USER_CURRENT_MSG; |
| 29 | import static com.android.server.am.ActivityManagerService.SYSTEM_USER_START_MSG; |
| 30 | import static com.android.server.am.ActivityManagerService.USER_SWITCH_TIMEOUT_MSG; |
| 31 | |
| 32 | import android.app.ActivityManager; |
| 33 | import android.app.AppOpsManager; |
| 34 | import android.app.IStopUserCallback; |
| 35 | import android.app.IUserSwitchObserver; |
| 36 | import android.content.IIntentReceiver; |
| 37 | import android.content.Intent; |
| 38 | import android.content.pm.PackageManager; |
| 39 | import android.content.pm.UserInfo; |
| 40 | import android.os.BatteryStats; |
| 41 | import android.os.Binder; |
| 42 | import android.os.Bundle; |
| 43 | import android.os.Handler; |
| 44 | import android.os.IRemoteCallback; |
| 45 | import android.os.Process; |
| 46 | import android.os.RemoteCallbackList; |
| 47 | import android.os.RemoteException; |
| 48 | import android.os.UserHandle; |
| 49 | import android.os.UserManager; |
| 50 | import android.util.Slog; |
| 51 | import android.util.SparseArray; |
| 52 | import android.util.SparseIntArray; |
| 53 | |
| 54 | import com.android.internal.R; |
| 55 | import com.android.internal.util.ArrayUtils; |
| 56 | import com.android.server.pm.UserManagerService; |
| 57 | |
| 58 | import java.io.PrintWriter; |
| 59 | import java.util.ArrayList; |
| 60 | import java.util.Arrays; |
| 61 | import java.util.List; |
| 62 | |
| 63 | /** |
| 64 | * Helper class for {@link ActivityManagerService} responsible for multi-user functionality. |
| 65 | */ |
| 66 | final class UserController { |
| 67 | private static final String TAG = TAG_WITH_CLASS_NAME ? "UserController" : TAG_AM; |
| 68 | // Maximum number of users we allow to be running at a time. |
| 69 | static final int MAX_RUNNING_USERS = 3; |
| 70 | |
| 71 | // Amount of time we wait for observers to handle a user switch before |
| 72 | // giving up on them and unfreezing the screen. |
| 73 | static final int USER_SWITCH_TIMEOUT = 2 * 1000; |
| 74 | |
| 75 | private final ActivityManagerService mService; |
| 76 | private final Handler mHandler; |
| 77 | |
| 78 | // Holds the current foreground user's id |
| 79 | int mCurrentUserId = 0; |
| 80 | // Holds the target user's id during a user switch |
| 81 | int mTargetUserId = UserHandle.USER_NULL; |
| 82 | |
| 83 | /** |
| 84 | * Which users have been started, so are allowed to run code. |
| 85 | */ |
| 86 | private final SparseArray<UserState> mStartedUsers = new SparseArray<>(); |
| 87 | /** |
| 88 | * LRU list of history of current users. Most recently current is at the end. |
| 89 | */ |
| 90 | private final ArrayList<Integer> mUserLru = new ArrayList<>(); |
| 91 | |
| 92 | /** |
| 93 | * Constant array of the users that are currently started. |
| 94 | */ |
| 95 | private int[] mStartedUserArray = new int[] { 0 }; |
| 96 | |
| 97 | // If there are multiple profiles for the current user, their ids are here |
| 98 | // Currently only the primary user can have managed profiles |
| 99 | int[] mCurrentProfileIds = new int[] {}; // Accessed by ActivityStack |
| 100 | |
| 101 | /** |
| 102 | * Mapping from each known user ID to the profile group ID it is associated with. |
| 103 | */ |
| 104 | private final SparseIntArray mUserProfileGroupIdsSelfLocked = new SparseIntArray(); |
| 105 | |
| 106 | /** |
| 107 | * Registered observers of the user switching mechanics. |
| 108 | */ |
| 109 | final RemoteCallbackList<IUserSwitchObserver> mUserSwitchObservers |
| 110 | = new RemoteCallbackList<>(); |
| 111 | |
| 112 | /** |
| 113 | * Currently active user switch. |
| 114 | */ |
| 115 | Object mCurUserSwitchCallback; |
| 116 | |
| 117 | UserController(ActivityManagerService service) { |
| 118 | mService = service; |
| 119 | mHandler = mService.mHandler; |
| 120 | // User 0 is the first and only user that runs at boot. |
| 121 | mStartedUsers.put(UserHandle.USER_SYSTEM, new UserState(UserHandle.SYSTEM, true)); |
| 122 | mUserLru.add(UserHandle.USER_SYSTEM); |
| 123 | updateStartedUserArrayLocked(); |
| 124 | } |
| 125 | |
| 126 | void finishUserSwitch(UserState uss) { |
| 127 | synchronized (mService) { |
| 128 | finishUserBoot(uss); |
| 129 | |
| 130 | startProfilesLocked(); |
| 131 | |
| 132 | int num = mUserLru.size(); |
| 133 | int i = 0; |
| 134 | while (num > MAX_RUNNING_USERS && i < mUserLru.size()) { |
| 135 | Integer oldUserId = mUserLru.get(i); |
| 136 | UserState oldUss = mStartedUsers.get(oldUserId); |
| 137 | if (oldUss == null) { |
| 138 | // Shouldn't happen, but be sane if it does. |
| 139 | mUserLru.remove(i); |
| 140 | num--; |
| 141 | continue; |
| 142 | } |
| 143 | if (oldUss.mState == UserState.STATE_STOPPING |
| 144 | || oldUss.mState == UserState.STATE_SHUTDOWN) { |
| 145 | // This user is already stopping, doesn't count. |
| 146 | num--; |
| 147 | i++; |
| 148 | continue; |
| 149 | } |
| 150 | if (oldUserId == UserHandle.USER_SYSTEM || oldUserId == mCurrentUserId) { |
| 151 | // Owner/System user and current user can't be stopped. We count it as running |
| 152 | // when it is not a pure system user. |
| 153 | if (UserInfo.isSystemOnly(oldUserId)) { |
| 154 | num--; |
| 155 | } |
| 156 | i++; |
| 157 | continue; |
| 158 | } |
| 159 | // This is a user to be stopped. |
| 160 | stopUserLocked(oldUserId, null); |
| 161 | num--; |
| 162 | i++; |
| 163 | } |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | void finishUserBoot(UserState uss) { |
| 168 | synchronized (mService) { |
| 169 | if (uss.mState == UserState.STATE_BOOTING |
| 170 | && mStartedUsers.get(uss.mHandle.getIdentifier()) == uss) { |
| 171 | uss.mState = UserState.STATE_RUNNING; |
| 172 | final int userId = uss.mHandle.getIdentifier(); |
| 173 | Intent intent = new Intent(Intent.ACTION_BOOT_COMPLETED, null); |
| 174 | intent.putExtra(Intent.EXTRA_USER_HANDLE, userId); |
| 175 | intent.addFlags(Intent.FLAG_RECEIVER_NO_ABORT); |
| 176 | mService.broadcastIntentLocked(null, null, intent, |
| 177 | null, null, 0, null, null, |
| 178 | new String[]{android.Manifest.permission.RECEIVE_BOOT_COMPLETED}, |
| 179 | AppOpsManager.OP_NONE, null, true, false, ActivityManagerService.MY_PID, |
| 180 | Process.SYSTEM_UID, userId); |
| 181 | } |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | int stopUser(final int userId, final IStopUserCallback callback) { |
| 186 | if (mService.checkCallingPermission(INTERACT_ACROSS_USERS_FULL) |
| 187 | != PackageManager.PERMISSION_GRANTED) { |
| 188 | String msg = "Permission Denial: switchUser() from pid=" |
| 189 | + Binder.getCallingPid() |
| 190 | + ", uid=" + Binder.getCallingUid() |
| 191 | + " requires " + INTERACT_ACROSS_USERS_FULL; |
| 192 | Slog.w(TAG, msg); |
| 193 | throw new SecurityException(msg); |
| 194 | } |
| 195 | if (userId < 0 || userId == UserHandle.USER_SYSTEM) { |
| 196 | throw new IllegalArgumentException("Can't stop system user " + userId); |
| 197 | } |
| 198 | mService.enforceShellRestriction(UserManager.DISALLOW_DEBUGGING_FEATURES, |
| 199 | userId); |
| 200 | synchronized (mService) { |
| 201 | return stopUserLocked(userId, callback); |
| 202 | } |
| 203 | } |
| 204 | |
| 205 | private int stopUserLocked(final int userId, final IStopUserCallback callback) { |
| 206 | if (DEBUG_MU) Slog.i(TAG, "stopUserLocked userId=" + userId); |
| 207 | if (mCurrentUserId == userId && mTargetUserId == UserHandle.USER_NULL) { |
| 208 | return USER_OP_IS_CURRENT; |
| 209 | } |
| 210 | |
| 211 | final UserState uss = mStartedUsers.get(userId); |
| 212 | if (uss == null) { |
| 213 | // User is not started, nothing to do... but we do need to |
| 214 | // callback if requested. |
| 215 | if (callback != null) { |
| 216 | mHandler.post(new Runnable() { |
| 217 | @Override |
| 218 | public void run() { |
| 219 | try { |
| 220 | callback.userStopped(userId); |
| 221 | } catch (RemoteException e) { |
| 222 | } |
| 223 | } |
| 224 | }); |
| 225 | } |
| 226 | return USER_OP_SUCCESS; |
| 227 | } |
| 228 | |
| 229 | if (callback != null) { |
| 230 | uss.mStopCallbacks.add(callback); |
| 231 | } |
| 232 | |
| 233 | if (uss.mState != UserState.STATE_STOPPING |
| 234 | && uss.mState != UserState.STATE_SHUTDOWN) { |
| 235 | uss.mState = UserState.STATE_STOPPING; |
| 236 | updateStartedUserArrayLocked(); |
| 237 | |
| 238 | long ident = Binder.clearCallingIdentity(); |
| 239 | try { |
| 240 | // We are going to broadcast ACTION_USER_STOPPING and then |
| 241 | // once that is done send a final ACTION_SHUTDOWN and then |
| 242 | // stop the user. |
| 243 | final Intent stoppingIntent = new Intent(Intent.ACTION_USER_STOPPING); |
| 244 | stoppingIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); |
| 245 | stoppingIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); |
| 246 | stoppingIntent.putExtra(Intent.EXTRA_SHUTDOWN_USERSPACE_ONLY, true); |
| 247 | final Intent shutdownIntent = new Intent(Intent.ACTION_SHUTDOWN); |
| 248 | // This is the result receiver for the final shutdown broadcast. |
| 249 | final IIntentReceiver shutdownReceiver = new IIntentReceiver.Stub() { |
| 250 | @Override |
| 251 | public void performReceive(Intent intent, int resultCode, String data, |
| 252 | Bundle extras, boolean ordered, boolean sticky, int sendingUser) { |
| 253 | finishUserStop(uss); |
| 254 | } |
| 255 | }; |
| 256 | // This is the result receiver for the initial stopping broadcast. |
| 257 | final IIntentReceiver stoppingReceiver = new IIntentReceiver.Stub() { |
| 258 | @Override |
| 259 | public void performReceive(Intent intent, int resultCode, String data, |
| 260 | Bundle extras, boolean ordered, boolean sticky, int sendingUser) { |
| 261 | // On to the next. |
| 262 | synchronized (mService) { |
| 263 | if (uss.mState != UserState.STATE_STOPPING) { |
| 264 | // Whoops, we are being started back up. Abort, abort! |
| 265 | return; |
| 266 | } |
| 267 | uss.mState = UserState.STATE_SHUTDOWN; |
| 268 | } |
| 269 | mService.mBatteryStatsService.noteEvent( |
| 270 | BatteryStats.HistoryItem.EVENT_USER_RUNNING_FINISH, |
| 271 | Integer.toString(userId), userId); |
| 272 | mService.mSystemServiceManager.stopUser(userId); |
| 273 | mService.broadcastIntentLocked(null, null, shutdownIntent, |
| 274 | null, shutdownReceiver, 0, null, null, null, AppOpsManager.OP_NONE, |
| 275 | null, true, false, ActivityManagerService.MY_PID, |
| 276 | android.os.Process.SYSTEM_UID, userId); |
| 277 | } |
| 278 | }; |
| 279 | // Kick things off. |
| 280 | mService.broadcastIntentLocked(null, null, stoppingIntent, |
| 281 | null, stoppingReceiver, 0, null, null, |
| 282 | new String[]{INTERACT_ACROSS_USERS}, AppOpsManager.OP_NONE, |
| 283 | null, true, false, ActivityManagerService.MY_PID, Process.SYSTEM_UID, |
| 284 | UserHandle.USER_ALL); |
| 285 | } finally { |
| 286 | Binder.restoreCallingIdentity(ident); |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | return USER_OP_SUCCESS; |
| 291 | } |
| 292 | |
| 293 | void finishUserStop(UserState uss) { |
| 294 | final int userId = uss.mHandle.getIdentifier(); |
| 295 | boolean stopped; |
| 296 | ArrayList<IStopUserCallback> callbacks; |
| 297 | synchronized (mService) { |
| 298 | callbacks = new ArrayList<>(uss.mStopCallbacks); |
| 299 | if (mStartedUsers.get(userId) != uss) { |
| 300 | stopped = false; |
| 301 | } else if (uss.mState != UserState.STATE_SHUTDOWN) { |
| 302 | stopped = false; |
| 303 | } else { |
| 304 | stopped = true; |
| 305 | // User can no longer run. |
| 306 | mStartedUsers.remove(userId); |
| 307 | mUserLru.remove(Integer.valueOf(userId)); |
| 308 | updateStartedUserArrayLocked(); |
| 309 | |
| 310 | // Clean up all state and processes associated with the user. |
| 311 | // Kill all the processes for the user. |
| 312 | forceStopUserLocked(userId, "finish user"); |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | for (int i = 0; i < callbacks.size(); i++) { |
| 317 | try { |
| 318 | if (stopped) callbacks.get(i).userStopped(userId); |
| 319 | else callbacks.get(i).userStopAborted(userId); |
| 320 | } catch (RemoteException e) { |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | if (stopped) { |
| 325 | mService.mSystemServiceManager.cleanupUser(userId); |
| 326 | synchronized (mService) { |
| 327 | mService.mStackSupervisor.removeUserLocked(userId); |
| 328 | } |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | private void forceStopUserLocked(int userId, String reason) { |
| 333 | mService.forceStopPackageLocked(null, -1, false, false, true, false, false, |
| 334 | userId, reason); |
| 335 | Intent intent = new Intent(Intent.ACTION_USER_STOPPED); |
| 336 | intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY |
| 337 | | Intent.FLAG_RECEIVER_FOREGROUND); |
| 338 | intent.putExtra(Intent.EXTRA_USER_HANDLE, userId); |
| 339 | mService.broadcastIntentLocked(null, null, intent, |
| 340 | null, null, 0, null, null, null, AppOpsManager.OP_NONE, |
| 341 | null, false, false, ActivityManagerService.MY_PID, Process.SYSTEM_UID, |
| 342 | UserHandle.USER_ALL); |
| 343 | } |
| 344 | |
| 345 | |
| 346 | /** |
| 347 | * Stops the guest user if it has gone to the background. |
| 348 | */ |
| 349 | private void stopGuestUserIfBackground() { |
| 350 | synchronized (mService) { |
| 351 | final int num = mUserLru.size(); |
| 352 | for (int i = 0; i < num; i++) { |
| 353 | Integer oldUserId = mUserLru.get(i); |
| 354 | UserState oldUss = mStartedUsers.get(oldUserId); |
| 355 | if (oldUserId == UserHandle.USER_SYSTEM || oldUserId == mCurrentUserId |
| 356 | || oldUss.mState == UserState.STATE_STOPPING |
| 357 | || oldUss.mState == UserState.STATE_SHUTDOWN) { |
| 358 | continue; |
| 359 | } |
| 360 | UserInfo userInfo = getUserManagerLocked().getUserInfo(oldUserId); |
| 361 | if (userInfo.isGuest()) { |
| 362 | // This is a user to be stopped. |
| 363 | stopUserLocked(oldUserId, null); |
| 364 | break; |
| 365 | } |
| 366 | } |
| 367 | } |
| 368 | } |
| 369 | |
| 370 | void startProfilesLocked() { |
| 371 | if (DEBUG_MU) Slog.i(TAG, "startProfilesLocked"); |
| 372 | List<UserInfo> profiles = getUserManagerLocked().getProfiles( |
| 373 | mCurrentUserId, false /* enabledOnly */); |
| 374 | List<UserInfo> profilesToStart = new ArrayList<>(profiles.size()); |
| 375 | for (UserInfo user : profiles) { |
| 376 | if ((user.flags & UserInfo.FLAG_INITIALIZED) == UserInfo.FLAG_INITIALIZED |
| 377 | && user.id != mCurrentUserId) { |
| 378 | profilesToStart.add(user); |
| 379 | } |
| 380 | } |
| 381 | final int profilesToStartSize = profilesToStart.size(); |
| 382 | int i = 0; |
| 383 | for (; i < profilesToStartSize && i < (MAX_RUNNING_USERS - 1); ++i) { |
| 384 | startUser(profilesToStart.get(i).id, /* foreground= */ false); |
| 385 | } |
| 386 | if (i < profilesToStartSize) { |
| 387 | Slog.w(TAG, "More profiles than MAX_RUNNING_USERS"); |
| 388 | } |
| 389 | } |
| 390 | |
| 391 | private UserManagerService getUserManagerLocked() { |
| 392 | return mService.getUserManagerLocked(); |
| 393 | } |
| 394 | |
| 395 | boolean startUser(final int userId, final boolean foreground) { |
| 396 | if (mService.checkCallingPermission(INTERACT_ACROSS_USERS_FULL) |
| 397 | != PackageManager.PERMISSION_GRANTED) { |
| 398 | String msg = "Permission Denial: switchUser() from pid=" |
| 399 | + Binder.getCallingPid() |
| 400 | + ", uid=" + Binder.getCallingUid() |
| 401 | + " requires " + INTERACT_ACROSS_USERS_FULL; |
| 402 | Slog.w(TAG, msg); |
| 403 | throw new SecurityException(msg); |
| 404 | } |
| 405 | |
| 406 | if (DEBUG_MU) Slog.i(TAG, "starting userid:" + userId + " fore:" + foreground); |
| 407 | |
| 408 | final long ident = Binder.clearCallingIdentity(); |
| 409 | try { |
| 410 | synchronized (mService) { |
| 411 | final int oldUserId = mCurrentUserId; |
| 412 | if (oldUserId == userId) { |
| 413 | return true; |
| 414 | } |
| 415 | |
| 416 | mService.mStackSupervisor.setLockTaskModeLocked(null, |
| 417 | ActivityManager.LOCK_TASK_MODE_NONE, "startUser", false); |
| 418 | |
| 419 | final UserInfo userInfo = getUserManagerLocked().getUserInfo(userId); |
| 420 | if (userInfo == null) { |
| 421 | Slog.w(TAG, "No user info for user #" + userId); |
| 422 | return false; |
| 423 | } |
| 424 | if (foreground && userInfo.isManagedProfile()) { |
| 425 | Slog.w(TAG, "Cannot switch to User #" + userId + ": not a full user"); |
| 426 | return false; |
| 427 | } |
| 428 | |
| 429 | if (foreground) { |
| 430 | mService.mWindowManager.startFreezingScreen( |
| 431 | R.anim.screen_user_exit, R.anim.screen_user_enter); |
| 432 | } |
| 433 | |
| 434 | boolean needStart = false; |
| 435 | |
| 436 | // If the user we are switching to is not currently started, then |
| 437 | // we need to start it now. |
| 438 | if (mStartedUsers.get(userId) == null) { |
| 439 | mStartedUsers.put(userId, new UserState(new UserHandle(userId), false)); |
| 440 | updateStartedUserArrayLocked(); |
| 441 | needStart = true; |
| 442 | } |
| 443 | |
| 444 | final Integer userIdInt = userId; |
| 445 | mUserLru.remove(userIdInt); |
| 446 | mUserLru.add(userIdInt); |
| 447 | |
| 448 | if (foreground) { |
| 449 | mCurrentUserId = userId; |
| 450 | mService.updateUserConfigurationLocked(); |
| 451 | mTargetUserId = UserHandle.USER_NULL; // reset, mCurrentUserId has caught up |
| 452 | updateCurrentProfileIdsLocked(); |
| 453 | mService.mWindowManager.setCurrentUser(userId, mCurrentProfileIds); |
| 454 | // Once the internal notion of the active user has switched, we lock the device |
| 455 | // with the option to show the user switcher on the keyguard. |
| 456 | mService.mWindowManager.lockNow(null); |
| 457 | } else { |
| 458 | final Integer currentUserIdInt = mCurrentUserId; |
| 459 | updateCurrentProfileIdsLocked(); |
| 460 | mService.mWindowManager.setCurrentProfileIds(mCurrentProfileIds); |
| 461 | mUserLru.remove(currentUserIdInt); |
| 462 | mUserLru.add(currentUserIdInt); |
| 463 | } |
| 464 | |
| 465 | final UserState uss = mStartedUsers.get(userId); |
| 466 | |
| 467 | // Make sure user is in the started state. If it is currently |
| 468 | // stopping, we need to knock that off. |
| 469 | if (uss.mState == UserState.STATE_STOPPING) { |
| 470 | // If we are stopping, we haven't sent ACTION_SHUTDOWN, |
| 471 | // so we can just fairly silently bring the user back from |
| 472 | // the almost-dead. |
| 473 | uss.mState = UserState.STATE_RUNNING; |
| 474 | updateStartedUserArrayLocked(); |
| 475 | needStart = true; |
| 476 | } else if (uss.mState == UserState.STATE_SHUTDOWN) { |
| 477 | // This means ACTION_SHUTDOWN has been sent, so we will |
| 478 | // need to treat this as a new boot of the user. |
| 479 | uss.mState = UserState.STATE_BOOTING; |
| 480 | updateStartedUserArrayLocked(); |
| 481 | needStart = true; |
| 482 | } |
| 483 | |
| 484 | if (uss.mState == UserState.STATE_BOOTING) { |
| 485 | // Booting up a new user, need to tell system services about it. |
| 486 | // Note that this is on the same handler as scheduling of broadcasts, |
| 487 | // which is important because it needs to go first. |
| 488 | mHandler.sendMessage(mHandler.obtainMessage(SYSTEM_USER_START_MSG, userId, 0)); |
| 489 | } |
| 490 | |
| 491 | if (foreground) { |
| 492 | mHandler.sendMessage(mHandler.obtainMessage(SYSTEM_USER_CURRENT_MSG, userId, |
| 493 | oldUserId)); |
| 494 | mHandler.removeMessages(REPORT_USER_SWITCH_MSG); |
| 495 | mHandler.removeMessages(USER_SWITCH_TIMEOUT_MSG); |
| 496 | mHandler.sendMessage(mHandler.obtainMessage(REPORT_USER_SWITCH_MSG, |
| 497 | oldUserId, userId, uss)); |
| 498 | mHandler.sendMessageDelayed(mHandler.obtainMessage(USER_SWITCH_TIMEOUT_MSG, |
| 499 | oldUserId, userId, uss), USER_SWITCH_TIMEOUT); |
| 500 | } |
| 501 | |
| 502 | if (needStart) { |
| 503 | // Send USER_STARTED broadcast |
| 504 | Intent intent = new Intent(Intent.ACTION_USER_STARTED); |
| 505 | intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY |
| 506 | | Intent.FLAG_RECEIVER_FOREGROUND); |
| 507 | intent.putExtra(Intent.EXTRA_USER_HANDLE, userId); |
| 508 | mService.broadcastIntentLocked(null, null, intent, |
| 509 | null, null, 0, null, null, null, AppOpsManager.OP_NONE, |
| 510 | null, false, false, ActivityManagerService.MY_PID, Process.SYSTEM_UID, |
| 511 | userId); |
| 512 | } |
| 513 | |
| 514 | if ((userInfo.flags&UserInfo.FLAG_INITIALIZED) == 0) { |
| 515 | if (userId != UserHandle.USER_SYSTEM) { |
| 516 | Intent intent = new Intent(Intent.ACTION_USER_INITIALIZE); |
| 517 | intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND); |
| 518 | mService.broadcastIntentLocked(null, null, intent, null, |
| 519 | new IIntentReceiver.Stub() { |
| 520 | public void performReceive(Intent intent, int resultCode, |
| 521 | String data, Bundle extras, boolean ordered, |
| 522 | boolean sticky, int sendingUser) { |
| 523 | onUserInitialized(uss, foreground, oldUserId, userId); |
| 524 | } |
| 525 | }, 0, null, null, null, AppOpsManager.OP_NONE, |
| 526 | null, true, false, ActivityManagerService.MY_PID, |
| 527 | Process.SYSTEM_UID, userId); |
| 528 | uss.initializing = true; |
| 529 | } else { |
| 530 | getUserManagerLocked().makeInitialized(userInfo.id); |
| 531 | } |
| 532 | } |
| 533 | |
| 534 | if (foreground) { |
| 535 | if (!uss.initializing) { |
| 536 | moveUserToForegroundLocked(uss, oldUserId, userId); |
| 537 | } |
| 538 | } else { |
| 539 | mService.mStackSupervisor.startBackgroundUserLocked(userId, uss); |
| 540 | } |
| 541 | |
| 542 | if (needStart) { |
| 543 | Intent intent = new Intent(Intent.ACTION_USER_STARTING); |
| 544 | intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); |
| 545 | intent.putExtra(Intent.EXTRA_USER_HANDLE, userId); |
| 546 | mService.broadcastIntentLocked(null, null, intent, |
| 547 | null, new IIntentReceiver.Stub() { |
| 548 | @Override |
| 549 | public void performReceive(Intent intent, int resultCode, |
| 550 | String data, Bundle extras, boolean ordered, boolean sticky, |
| 551 | int sendingUser) throws RemoteException { |
| 552 | } |
| 553 | }, 0, null, null, |
| 554 | new String[]{INTERACT_ACROSS_USERS}, AppOpsManager.OP_NONE, |
| 555 | null, true, false, ActivityManagerService.MY_PID, Process.SYSTEM_UID, |
| 556 | UserHandle.USER_ALL); |
| 557 | } |
| 558 | } |
| 559 | } finally { |
| 560 | Binder.restoreCallingIdentity(ident); |
| 561 | } |
| 562 | |
| 563 | return true; |
| 564 | } |
| 565 | |
| 566 | void dispatchForegroundProfileChanged(int userId) { |
| 567 | final int observerCount = mUserSwitchObservers.beginBroadcast(); |
| 568 | for (int i = 0; i < observerCount; i++) { |
| 569 | try { |
| 570 | mUserSwitchObservers.getBroadcastItem(i).onForegroundProfileSwitch(userId); |
| 571 | } catch (RemoteException e) { |
| 572 | // Ignore |
| 573 | } |
| 574 | } |
| 575 | mUserSwitchObservers.finishBroadcast(); |
| 576 | } |
| 577 | |
| 578 | /** Called on handler thread */ |
| 579 | void dispatchUserSwitchComplete(int userId) { |
| 580 | final int observerCount = mUserSwitchObservers.beginBroadcast(); |
| 581 | for (int i = 0; i < observerCount; i++) { |
| 582 | try { |
| 583 | mUserSwitchObservers.getBroadcastItem(i).onUserSwitchComplete(userId); |
| 584 | } catch (RemoteException e) { |
| 585 | } |
| 586 | } |
| 587 | mUserSwitchObservers.finishBroadcast(); |
| 588 | } |
| 589 | |
| 590 | void timeoutUserSwitch(UserState uss, int oldUserId, int newUserId) { |
| 591 | synchronized (mService) { |
| 592 | Slog.w(TAG, "User switch timeout: from " + oldUserId + " to " + newUserId); |
| 593 | sendContinueUserSwitchLocked(uss, oldUserId, newUserId); |
| 594 | } |
| 595 | } |
| 596 | |
| 597 | void dispatchUserSwitch(final UserState uss, final int oldUserId, |
| 598 | final int newUserId) { |
| 599 | final int observerCount = mUserSwitchObservers.beginBroadcast(); |
| 600 | if (observerCount > 0) { |
| 601 | final IRemoteCallback callback = new IRemoteCallback.Stub() { |
| 602 | int mCount = 0; |
| 603 | @Override |
| 604 | public void sendResult(Bundle data) throws RemoteException { |
| 605 | synchronized (mService) { |
| 606 | if (mCurUserSwitchCallback == this) { |
| 607 | mCount++; |
| 608 | if (mCount == observerCount) { |
| 609 | sendContinueUserSwitchLocked(uss, oldUserId, newUserId); |
| 610 | } |
| 611 | } |
| 612 | } |
| 613 | } |
| 614 | }; |
| 615 | synchronized (mService) { |
| 616 | uss.switching = true; |
| 617 | mCurUserSwitchCallback = callback; |
| 618 | } |
| 619 | for (int i = 0; i < observerCount; i++) { |
| 620 | try { |
| 621 | mUserSwitchObservers.getBroadcastItem(i).onUserSwitching( |
| 622 | newUserId, callback); |
| 623 | } catch (RemoteException e) { |
| 624 | } |
| 625 | } |
| 626 | } else { |
| 627 | synchronized (mService) { |
| 628 | sendContinueUserSwitchLocked(uss, oldUserId, newUserId); |
| 629 | } |
| 630 | } |
| 631 | mUserSwitchObservers.finishBroadcast(); |
| 632 | } |
| 633 | |
| 634 | void sendContinueUserSwitchLocked(UserState uss, int oldUserId, int newUserId) { |
| 635 | mCurUserSwitchCallback = null; |
| 636 | mHandler.removeMessages(USER_SWITCH_TIMEOUT_MSG); |
| 637 | mHandler.sendMessage(mHandler.obtainMessage(ActivityManagerService.CONTINUE_USER_SWITCH_MSG, |
| 638 | oldUserId, newUserId, uss)); |
| 639 | } |
| 640 | |
| 641 | void continueUserSwitch(UserState uss, int oldUserId, int newUserId) { |
| 642 | completeSwitchAndInitialize(uss, newUserId, false, true); |
| 643 | } |
| 644 | |
| 645 | void onUserInitialized(UserState uss, boolean foreground, int oldUserId, int newUserId) { |
| 646 | synchronized (mService) { |
| 647 | if (foreground) { |
| 648 | moveUserToForegroundLocked(uss, oldUserId, newUserId); |
| 649 | } |
| 650 | } |
| 651 | completeSwitchAndInitialize(uss, newUserId, true, false); |
| 652 | } |
| 653 | |
| 654 | void completeSwitchAndInitialize(UserState uss, int newUserId, |
| 655 | boolean clearInitializing, boolean clearSwitching) { |
| 656 | boolean unfrozen = false; |
| 657 | synchronized (mService) { |
| 658 | if (clearInitializing) { |
| 659 | uss.initializing = false; |
| 660 | getUserManagerLocked().makeInitialized(uss.mHandle.getIdentifier()); |
| 661 | } |
| 662 | if (clearSwitching) { |
| 663 | uss.switching = false; |
| 664 | } |
| 665 | if (!uss.switching && !uss.initializing) { |
| 666 | mService.mWindowManager.stopFreezingScreen(); |
| 667 | unfrozen = true; |
| 668 | } |
| 669 | } |
| 670 | if (unfrozen) { |
| 671 | mHandler.removeMessages(REPORT_USER_SWITCH_COMPLETE_MSG); |
| 672 | mHandler.sendMessage(mHandler.obtainMessage(REPORT_USER_SWITCH_COMPLETE_MSG, |
| 673 | newUserId, 0)); |
| 674 | } |
| 675 | stopGuestUserIfBackground(); |
| 676 | } |
| 677 | |
| 678 | void moveUserToForegroundLocked(UserState uss, int oldUserId, int newUserId) { |
| 679 | boolean homeInFront = mService.mStackSupervisor.switchUserLocked(newUserId, uss); |
| 680 | if (homeInFront) { |
| 681 | mService.startHomeActivityLocked(newUserId, "moveUserToForeground"); |
| 682 | } else { |
| 683 | mService.mStackSupervisor.resumeTopActivitiesLocked(); |
| 684 | } |
| 685 | EventLogTags.writeAmSwitchUser(newUserId); |
| 686 | getUserManagerLocked().onUserForeground(newUserId); |
| 687 | mService.sendUserSwitchBroadcastsLocked(oldUserId, newUserId); |
| 688 | } |
| 689 | |
| 690 | void registerUserSwitchObserver(IUserSwitchObserver observer) { |
| 691 | if (mService.checkCallingPermission(INTERACT_ACROSS_USERS_FULL) |
| 692 | != PackageManager.PERMISSION_GRANTED) { |
| 693 | final String msg = "Permission Denial: registerUserSwitchObserver() from pid=" |
| 694 | + Binder.getCallingPid() |
| 695 | + ", uid=" + Binder.getCallingUid() |
| 696 | + " requires " + INTERACT_ACROSS_USERS_FULL; |
| 697 | Slog.w(TAG, msg); |
| 698 | throw new SecurityException(msg); |
| 699 | } |
| 700 | |
| 701 | mUserSwitchObservers.register(observer); |
| 702 | } |
| 703 | |
| 704 | void unregisterUserSwitchObserver(IUserSwitchObserver observer) { |
| 705 | mUserSwitchObservers.unregister(observer); |
| 706 | } |
| 707 | |
| 708 | UserState getStartedUserState(int userId) { |
| 709 | return mStartedUsers.get(userId); |
| 710 | } |
| 711 | |
| 712 | boolean hasStartedUserState(int userId) { |
| 713 | return mStartedUsers.get(userId) != null; |
| 714 | } |
| 715 | |
| 716 | private void updateStartedUserArrayLocked() { |
| 717 | int num = 0; |
| 718 | for (int i = 0; i < mStartedUsers.size(); i++) { |
| 719 | UserState uss = mStartedUsers.valueAt(i); |
| 720 | // This list does not include stopping users. |
| 721 | if (uss.mState != UserState.STATE_STOPPING |
| 722 | && uss.mState != UserState.STATE_SHUTDOWN) { |
| 723 | num++; |
| 724 | } |
| 725 | } |
| 726 | mStartedUserArray = new int[num]; |
| 727 | num = 0; |
| 728 | for (int i = 0; i < mStartedUsers.size(); i++) { |
| 729 | UserState uss = mStartedUsers.valueAt(i); |
| 730 | if (uss.mState != UserState.STATE_STOPPING |
| 731 | && uss.mState != UserState.STATE_SHUTDOWN) { |
| 732 | mStartedUserArray[num] = mStartedUsers.keyAt(i); |
| 733 | num++; |
| 734 | } |
| 735 | } |
| 736 | } |
| 737 | |
| 738 | void sendBootCompletedLocked(IIntentReceiver resultTo) { |
| 739 | for (int i = 0; i < mStartedUsers.size(); i++) { |
| 740 | UserState uss = mStartedUsers.valueAt(i); |
| 741 | if (uss.mState == UserState.STATE_BOOTING) { |
| 742 | uss.mState = UserState.STATE_RUNNING; |
| 743 | final int userId = mStartedUsers.keyAt(i); |
| 744 | Intent intent = new Intent(Intent.ACTION_BOOT_COMPLETED, null); |
| 745 | intent.putExtra(Intent.EXTRA_USER_HANDLE, userId); |
| 746 | intent.addFlags(Intent.FLAG_RECEIVER_NO_ABORT); |
| 747 | mService.broadcastIntentLocked(null, null, intent, null, |
| 748 | resultTo, 0, null, null, |
| 749 | new String[]{android.Manifest.permission.RECEIVE_BOOT_COMPLETED}, |
| 750 | AppOpsManager.OP_NONE, null, true, false, |
| 751 | ActivityManagerService.MY_PID, Process.SYSTEM_UID, userId); |
| 752 | } |
| 753 | } |
| 754 | } |
| 755 | |
| 756 | /** |
| 757 | * Refreshes the list of users related to the current user when either a |
| 758 | * user switch happens or when a new related user is started in the |
| 759 | * background. |
| 760 | */ |
| 761 | void updateCurrentProfileIdsLocked() { |
| 762 | final List<UserInfo> profiles = getUserManagerLocked().getProfiles(mCurrentUserId, |
| 763 | false /* enabledOnly */); |
| 764 | int[] currentProfileIds = new int[profiles.size()]; // profiles will not be null |
| 765 | for (int i = 0; i < currentProfileIds.length; i++) { |
| 766 | currentProfileIds[i] = profiles.get(i).id; |
| 767 | } |
| 768 | mCurrentProfileIds = currentProfileIds; |
| 769 | |
| 770 | synchronized (mUserProfileGroupIdsSelfLocked) { |
| 771 | mUserProfileGroupIdsSelfLocked.clear(); |
| 772 | final List<UserInfo> users = getUserManagerLocked().getUsers(false); |
| 773 | for (int i = 0; i < users.size(); i++) { |
| 774 | UserInfo user = users.get(i); |
| 775 | if (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { |
| 776 | mUserProfileGroupIdsSelfLocked.put(user.id, user.profileGroupId); |
| 777 | } |
| 778 | } |
| 779 | } |
| 780 | } |
| 781 | |
| 782 | int[] getStartedUserArrayLocked() { |
| 783 | return mStartedUserArray; |
| 784 | } |
| 785 | |
| 786 | UserInfo getCurrentUser() { |
| 787 | if ((mService.checkCallingPermission(INTERACT_ACROSS_USERS) |
| 788 | != PackageManager.PERMISSION_GRANTED) && ( |
| 789 | mService.checkCallingPermission(INTERACT_ACROSS_USERS_FULL) |
| 790 | != PackageManager.PERMISSION_GRANTED)) { |
| 791 | String msg = "Permission Denial: getCurrentUser() from pid=" |
| 792 | + Binder.getCallingPid() |
| 793 | + ", uid=" + Binder.getCallingUid() |
| 794 | + " requires " + INTERACT_ACROSS_USERS; |
| 795 | Slog.w(TAG, msg); |
| 796 | throw new SecurityException(msg); |
| 797 | } |
| 798 | synchronized (mService) { |
| 799 | return getCurrentUserLocked(); |
| 800 | } |
| 801 | } |
| 802 | |
| 803 | UserInfo getCurrentUserLocked() { |
| 804 | int userId = mTargetUserId != UserHandle.USER_NULL ? mTargetUserId : mCurrentUserId; |
| 805 | return getUserManagerLocked().getUserInfo(userId); |
| 806 | } |
| 807 | |
| 808 | int getCurrentUserIdLocked() { |
| 809 | return mTargetUserId != UserHandle.USER_NULL ? mTargetUserId : mCurrentUserId; |
| 810 | } |
| 811 | |
| 812 | boolean isSameProfileGroup(int callingUserId, int targetUserId) { |
| 813 | synchronized (mUserProfileGroupIdsSelfLocked) { |
| 814 | int callingProfile = mUserProfileGroupIdsSelfLocked.get(callingUserId, |
| 815 | UserInfo.NO_PROFILE_GROUP_ID); |
| 816 | int targetProfile = mUserProfileGroupIdsSelfLocked.get(targetUserId, |
| 817 | UserInfo.NO_PROFILE_GROUP_ID); |
| 818 | return callingProfile != UserInfo.NO_PROFILE_GROUP_ID |
| 819 | && callingProfile == targetProfile; |
| 820 | } |
| 821 | } |
| 822 | |
| 823 | boolean isCurrentProfileLocked(int userId) { |
| 824 | return ArrayUtils.contains(mCurrentProfileIds, userId); |
| 825 | } |
| 826 | |
| 827 | void dump(PrintWriter pw, boolean dumpAll) { |
| 828 | pw.println(" mStartedUsers:"); |
| 829 | for (int i = 0; i < mStartedUsers.size(); i++) { |
| 830 | UserState uss = mStartedUsers.valueAt(i); |
| 831 | pw.print(" User #"); pw.print(uss.mHandle.getIdentifier()); |
| 832 | pw.print(": "); uss.dump("", pw); |
| 833 | } |
| 834 | pw.print(" mStartedUserArray: ["); |
| 835 | for (int i = 0; i < mStartedUserArray.length; i++) { |
| 836 | if (i > 0) pw.print(", "); |
| 837 | pw.print(mStartedUserArray[i]); |
| 838 | } |
| 839 | pw.println("]"); |
| 840 | pw.print(" mUserLru: ["); |
| 841 | for (int i = 0; i < mUserLru.size(); i++) { |
| 842 | if (i > 0) pw.print(", "); |
| 843 | pw.print(mUserLru.get(i)); |
| 844 | } |
| 845 | pw.println("]"); |
| 846 | if (dumpAll) { |
| 847 | pw.print(" mStartedUserArray: "); pw.println(Arrays.toString(mStartedUserArray)); |
| 848 | } |
| 849 | synchronized (mUserProfileGroupIdsSelfLocked) { |
| 850 | if (mUserProfileGroupIdsSelfLocked.size() > 0) { |
| 851 | pw.println(" mUserProfileGroupIds:"); |
| 852 | for (int i=0; i<mUserProfileGroupIdsSelfLocked.size(); i++) { |
| 853 | pw.print(" User #"); |
| 854 | pw.print(mUserProfileGroupIdsSelfLocked.keyAt(i)); |
| 855 | pw.print(" -> profile #"); |
| 856 | pw.println(mUserProfileGroupIdsSelfLocked.valueAt(i)); |
| 857 | } |
| 858 | } |
| 859 | } |
| 860 | } |
| 861 | |
| 862 | } |