UserManagerService.java revision e3e314df4d52881225326d426a76e3e7f1bc40d3
1/* 2 * Copyright (C) 2011 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 17package com.android.server.pm; 18 19import android.app.Activity; 20import android.app.ActivityManager; 21import android.app.ActivityManagerNative; 22import android.app.IStopUserCallback; 23import android.content.BroadcastReceiver; 24import android.content.Context; 25import android.content.Intent; 26import android.content.pm.ApplicationInfo; 27import android.content.pm.PackageManager; 28import android.content.pm.PackageManager.NameNotFoundException; 29import android.content.pm.UserInfo; 30import android.graphics.Bitmap; 31import android.os.Binder; 32import android.os.Bundle; 33import android.os.Environment; 34import android.os.FileUtils; 35import android.os.Handler; 36import android.os.IUserManager; 37import android.os.Message; 38import android.os.ParcelFileDescriptor; 39import android.os.Parcelable; 40import android.os.Process; 41import android.os.RemoteException; 42import android.os.ServiceManager; 43import android.os.UserHandle; 44import android.os.UserManager; 45import android.util.AtomicFile; 46import android.util.Log; 47import android.util.Slog; 48import android.util.SparseArray; 49import android.util.SparseBooleanArray; 50import android.util.TimeUtils; 51import android.util.Xml; 52 53import com.google.android.collect.Sets; 54 55import com.android.internal.annotations.VisibleForTesting; 56import com.android.internal.app.IAppOpsService; 57import com.android.internal.util.ArrayUtils; 58import com.android.internal.util.FastXmlSerializer; 59import com.android.internal.util.XmlUtils; 60 61import org.xmlpull.v1.XmlPullParser; 62import org.xmlpull.v1.XmlPullParserException; 63import org.xmlpull.v1.XmlSerializer; 64 65import java.io.BufferedOutputStream; 66import java.io.File; 67import java.io.FileDescriptor; 68import java.io.FileInputStream; 69import java.io.FileNotFoundException; 70import java.io.FileOutputStream; 71import java.io.IOException; 72import java.io.PrintWriter; 73import java.nio.charset.StandardCharsets; 74import java.util.ArrayList; 75import java.util.List; 76import java.util.Set; 77 78import libcore.io.IoUtils; 79 80public class UserManagerService extends IUserManager.Stub { 81 82 private static final String LOG_TAG = "UserManagerService"; 83 84 private static final boolean DBG = false; 85 86 private static final String TAG_NAME = "name"; 87 private static final String ATTR_FLAGS = "flags"; 88 private static final String ATTR_ICON_PATH = "icon"; 89 private static final String ATTR_ID = "id"; 90 private static final String ATTR_CREATION_TIME = "created"; 91 private static final String ATTR_LAST_LOGGED_IN_TIME = "lastLoggedIn"; 92 private static final String ATTR_SERIAL_NO = "serialNumber"; 93 private static final String ATTR_NEXT_SERIAL_NO = "nextSerialNumber"; 94 private static final String ATTR_PARTIAL = "partial"; 95 private static final String ATTR_GUEST_TO_REMOVE = "guestToRemove"; 96 private static final String ATTR_USER_VERSION = "version"; 97 private static final String ATTR_PROFILE_GROUP_ID = "profileGroupId"; 98 private static final String TAG_GUEST_RESTRICTIONS = "guestRestrictions"; 99 private static final String TAG_USERS = "users"; 100 private static final String TAG_USER = "user"; 101 private static final String TAG_RESTRICTIONS = "restrictions"; 102 private static final String TAG_ENTRY = "entry"; 103 private static final String TAG_VALUE = "value"; 104 private static final String ATTR_KEY = "key"; 105 private static final String ATTR_VALUE_TYPE = "type"; 106 private static final String ATTR_MULTIPLE = "m"; 107 108 private static final String ATTR_TYPE_STRING_ARRAY = "sa"; 109 private static final String ATTR_TYPE_STRING = "s"; 110 private static final String ATTR_TYPE_BOOLEAN = "b"; 111 private static final String ATTR_TYPE_INTEGER = "i"; 112 private static final String ATTR_TYPE_BUNDLE = "B"; 113 private static final String ATTR_TYPE_BUNDLE_ARRAY = "BA"; 114 115 private static final String USER_INFO_DIR = "system" + File.separator + "users"; 116 private static final String USER_LIST_FILENAME = "userlist.xml"; 117 private static final String USER_PHOTO_FILENAME = "photo.png"; 118 private static final String USER_PHOTO_FILENAME_TMP = USER_PHOTO_FILENAME + ".tmp"; 119 120 private static final String RESTRICTIONS_FILE_PREFIX = "res_"; 121 private static final String XML_SUFFIX = ".xml"; 122 123 private static final int MIN_USER_ID = 10; 124 125 private static final int USER_VERSION = 5; 126 127 private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms 128 129 // Maximum number of managed profiles permitted is 1. This cannot be increased 130 // without first making sure that the rest of the framework is prepared for it. 131 private static final int MAX_MANAGED_PROFILES = 1; 132 133 // Set of user restrictions, which can only be enforced by the system 134 private static final Set<String> SYSTEM_CONTROLLED_RESTRICTIONS = Sets.newArraySet( 135 UserManager.DISALLOW_RECORD_AUDIO); 136 137 static final int WRITE_USER_MSG = 1; 138 static final int WRITE_USER_DELAY = 2*1000; // 2 seconds 139 140 private final Context mContext; 141 private final PackageManagerService mPm; 142 private final Object mInstallLock; 143 private final Object mPackagesLock; 144 145 private final Handler mHandler; 146 147 private final File mUsersDir; 148 private final File mUserListFile; 149 private final File mBaseUserPath; 150 151 private final SparseArray<UserInfo> mUsers = new SparseArray<UserInfo>(); 152 private final SparseArray<Bundle> mUserRestrictions = new SparseArray<Bundle>(); 153 private final Bundle mGuestRestrictions = new Bundle(); 154 155 /** 156 * Set of user IDs being actively removed. Removed IDs linger in this set 157 * for several seconds to work around a VFS caching issue. 158 */ 159 // @GuardedBy("mPackagesLock") 160 private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); 161 162 private int[] mUserIds; 163 private int mNextSerialNumber; 164 private int mUserVersion = 0; 165 166 private IAppOpsService mAppOpsService; 167 168 private static UserManagerService sInstance; 169 170 public static UserManagerService getInstance() { 171 synchronized (UserManagerService.class) { 172 return sInstance; 173 } 174 } 175 176 /** 177 * Available for testing purposes. 178 */ 179 UserManagerService(File dataDir, File baseUserPath) { 180 this(null, null, new Object(), new Object(), dataDir, baseUserPath); 181 } 182 183 /** 184 * Called by package manager to create the service. This is closely 185 * associated with the package manager, and the given lock is the 186 * package manager's own lock. 187 */ 188 UserManagerService(Context context, PackageManagerService pm, 189 Object installLock, Object packagesLock) { 190 this(context, pm, installLock, packagesLock, 191 Environment.getDataDirectory(), 192 new File(Environment.getDataDirectory(), "user")); 193 } 194 195 /** 196 * Available for testing purposes. 197 */ 198 private UserManagerService(Context context, PackageManagerService pm, 199 Object installLock, Object packagesLock, 200 File dataDir, File baseUserPath) { 201 mContext = context; 202 mPm = pm; 203 mInstallLock = installLock; 204 mPackagesLock = packagesLock; 205 mHandler = new MainHandler(); 206 synchronized (mInstallLock) { 207 synchronized (mPackagesLock) { 208 mUsersDir = new File(dataDir, USER_INFO_DIR); 209 mUsersDir.mkdirs(); 210 // Make zeroth user directory, for services to migrate their files to that location 211 File userZeroDir = new File(mUsersDir, "0"); 212 userZeroDir.mkdirs(); 213 mBaseUserPath = baseUserPath; 214 FileUtils.setPermissions(mUsersDir.toString(), 215 FileUtils.S_IRWXU|FileUtils.S_IRWXG 216 |FileUtils.S_IROTH|FileUtils.S_IXOTH, 217 -1, -1); 218 mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); 219 initDefaultGuestRestrictions(); 220 readUserListLocked(); 221 sInstance = this; 222 } 223 } 224 } 225 226 void systemReady() { 227 synchronized (mInstallLock) { 228 synchronized (mPackagesLock) { 229 // Prune out any partially created/partially removed users. 230 ArrayList<UserInfo> partials = new ArrayList<UserInfo>(); 231 for (int i = 0; i < mUsers.size(); i++) { 232 UserInfo ui = mUsers.valueAt(i); 233 if ((ui.partial || ui.guestToRemove) && i != 0) { 234 partials.add(ui); 235 } 236 } 237 for (int i = 0; i < partials.size(); i++) { 238 UserInfo ui = partials.get(i); 239 Slog.w(LOG_TAG, "Removing partially created user #" + i 240 + " (name=" + ui.name + ")"); 241 removeUserStateLocked(ui.id); 242 } 243 } 244 } 245 onUserForeground(UserHandle.USER_OWNER); 246 mAppOpsService = IAppOpsService.Stub.asInterface( 247 ServiceManager.getService(Context.APP_OPS_SERVICE)); 248 for (int i = 0; i < mUserIds.length; ++i) { 249 try { 250 mAppOpsService.setUserRestrictions(mUserRestrictions.get(mUserIds[i]), mUserIds[i]); 251 } catch (RemoteException e) { 252 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 253 } 254 } 255 } 256 257 @Override 258 public List<UserInfo> getUsers(boolean excludeDying) { 259 checkManageUsersPermission("query users"); 260 synchronized (mPackagesLock) { 261 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 262 for (int i = 0; i < mUsers.size(); i++) { 263 UserInfo ui = mUsers.valueAt(i); 264 if (ui.partial) { 265 continue; 266 } 267 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 268 users.add(ui); 269 } 270 } 271 return users; 272 } 273 } 274 275 @Override 276 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 277 if (userId != UserHandle.getCallingUserId()) { 278 checkManageUsersPermission("getting profiles related to user " + userId); 279 } 280 final long ident = Binder.clearCallingIdentity(); 281 try { 282 synchronized (mPackagesLock) { 283 return getProfilesLocked(userId, enabledOnly); 284 } 285 } finally { 286 Binder.restoreCallingIdentity(ident); 287 } 288 } 289 290 /** Assume permissions already checked and caller's identity cleared */ 291 private List<UserInfo> getProfilesLocked(int userId, boolean enabledOnly) { 292 UserInfo user = getUserInfoLocked(userId); 293 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 294 if (user == null) { 295 // Probably a dying user 296 return users; 297 } 298 for (int i = 0; i < mUsers.size(); i++) { 299 UserInfo profile = mUsers.valueAt(i); 300 if (!isProfileOf(user, profile)) { 301 continue; 302 } 303 if (enabledOnly && !profile.isEnabled()) { 304 continue; 305 } 306 if (mRemovingUserIds.get(profile.id)) { 307 continue; 308 } 309 users.add(profile); 310 } 311 return users; 312 } 313 314 @Override 315 public UserInfo getProfileParent(int userHandle) { 316 checkManageUsersPermission("get the profile parent"); 317 synchronized (mPackagesLock) { 318 return getProfileParentLocked(userHandle); 319 } 320 } 321 322 private UserInfo getProfileParentLocked(int userHandle) { 323 UserInfo profile = getUserInfoLocked(userHandle); 324 if (profile == null) { 325 return null; 326 } 327 int parentUserId = profile.profileGroupId; 328 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 329 return null; 330 } else { 331 return getUserInfoLocked(parentUserId); 332 } 333 } 334 335 private boolean isProfileOf(UserInfo user, UserInfo profile) { 336 return user.id == profile.id || 337 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 338 && user.profileGroupId == profile.profileGroupId); 339 } 340 341 @Override 342 public void setUserEnabled(int userId) { 343 checkManageUsersPermission("enable user"); 344 synchronized (mPackagesLock) { 345 UserInfo info = getUserInfoLocked(userId); 346 if (info != null && !info.isEnabled()) { 347 info.flags ^= UserInfo.FLAG_DISABLED; 348 writeUserLocked(info); 349 } 350 } 351 } 352 353 @Override 354 public UserInfo getUserInfo(int userId) { 355 checkManageUsersPermission("query user"); 356 synchronized (mPackagesLock) { 357 return getUserInfoLocked(userId); 358 } 359 } 360 361 @Override 362 public boolean isRestricted() { 363 synchronized (mPackagesLock) { 364 return getUserInfoLocked(UserHandle.getCallingUserId()).isRestricted(); 365 } 366 } 367 368 /* 369 * Should be locked on mUsers before calling this. 370 */ 371 private UserInfo getUserInfoLocked(int userId) { 372 UserInfo ui = mUsers.get(userId); 373 // If it is partial and not in the process of being removed, return as unknown user. 374 if (ui != null && ui.partial && !mRemovingUserIds.get(userId)) { 375 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 376 return null; 377 } 378 return ui; 379 } 380 381 public boolean exists(int userId) { 382 synchronized (mPackagesLock) { 383 return ArrayUtils.contains(mUserIds, userId); 384 } 385 } 386 387 @Override 388 public void setUserName(int userId, String name) { 389 checkManageUsersPermission("rename users"); 390 boolean changed = false; 391 synchronized (mPackagesLock) { 392 UserInfo info = mUsers.get(userId); 393 if (info == null || info.partial) { 394 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 395 return; 396 } 397 if (name != null && !name.equals(info.name)) { 398 info.name = name; 399 writeUserLocked(info); 400 changed = true; 401 } 402 } 403 if (changed) { 404 sendUserInfoChangedBroadcast(userId); 405 } 406 } 407 408 @Override 409 public void setUserIcon(int userId, Bitmap bitmap) { 410 checkManageUsersPermission("update users"); 411 long ident = Binder.clearCallingIdentity(); 412 try { 413 synchronized (mPackagesLock) { 414 UserInfo info = mUsers.get(userId); 415 if (info == null || info.partial) { 416 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 417 return; 418 } 419 writeBitmapLocked(info, bitmap); 420 writeUserLocked(info); 421 } 422 sendUserInfoChangedBroadcast(userId); 423 } finally { 424 Binder.restoreCallingIdentity(ident); 425 } 426 } 427 428 private void sendUserInfoChangedBroadcast(int userId) { 429 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 430 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 431 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 432 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 433 } 434 435 @Override 436 public ParcelFileDescriptor getUserIcon(int userId) { 437 String iconPath; 438 synchronized (mPackagesLock) { 439 UserInfo info = mUsers.get(userId); 440 if (info == null || info.partial) { 441 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + userId); 442 return null; 443 } 444 int callingGroupId = mUsers.get(UserHandle.getCallingUserId()).profileGroupId; 445 if (callingGroupId == UserInfo.NO_PROFILE_GROUP_ID 446 || callingGroupId != info.profileGroupId) { 447 checkManageUsersPermission("get the icon of a user who is not related"); 448 } 449 if (info.iconPath == null) { 450 return null; 451 } 452 iconPath = info.iconPath; 453 } 454 455 try { 456 return ParcelFileDescriptor.open( 457 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 458 } catch (FileNotFoundException e) { 459 Log.e(LOG_TAG, "Couldn't find icon file", e); 460 } 461 return null; 462 } 463 464 public void makeInitialized(int userId) { 465 checkManageUsersPermission("makeInitialized"); 466 synchronized (mPackagesLock) { 467 UserInfo info = mUsers.get(userId); 468 if (info == null || info.partial) { 469 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 470 } 471 if ((info.flags&UserInfo.FLAG_INITIALIZED) == 0) { 472 info.flags |= UserInfo.FLAG_INITIALIZED; 473 scheduleWriteUserLocked(info); 474 } 475 } 476 } 477 478 /** 479 * If default guest restrictions haven't been initialized yet, add the basic 480 * restrictions. 481 */ 482 private void initDefaultGuestRestrictions() { 483 if (mGuestRestrictions.isEmpty()) { 484 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 485 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 486 } 487 } 488 489 @Override 490 public Bundle getDefaultGuestRestrictions() { 491 checkManageUsersPermission("getDefaultGuestRestrictions"); 492 synchronized (mPackagesLock) { 493 return new Bundle(mGuestRestrictions); 494 } 495 } 496 497 @Override 498 public void setDefaultGuestRestrictions(Bundle restrictions) { 499 checkManageUsersPermission("setDefaultGuestRestrictions"); 500 synchronized (mPackagesLock) { 501 mGuestRestrictions.clear(); 502 mGuestRestrictions.putAll(restrictions); 503 writeUserListLocked(); 504 } 505 } 506 507 @Override 508 public boolean hasUserRestriction(String restrictionKey, int userId) { 509 synchronized (mPackagesLock) { 510 Bundle restrictions = mUserRestrictions.get(userId); 511 return restrictions != null && restrictions.getBoolean(restrictionKey); 512 } 513 } 514 515 @Override 516 public Bundle getUserRestrictions(int userId) { 517 // checkManageUsersPermission("getUserRestrictions"); 518 519 synchronized (mPackagesLock) { 520 Bundle restrictions = mUserRestrictions.get(userId); 521 return restrictions != null ? new Bundle(restrictions) : new Bundle(); 522 } 523 } 524 525 @Override 526 public void setUserRestriction(String key, boolean value, int userId) { 527 synchronized (mPackagesLock) { 528 if (!SYSTEM_CONTROLLED_RESTRICTIONS.contains(key)) { 529 Bundle restrictions = getUserRestrictions(userId); 530 restrictions.putBoolean(key, value); 531 setUserRestrictionsInternalLocked(restrictions, userId); 532 } 533 } 534 } 535 536 @Override 537 public void setSystemControlledUserRestriction(String key, boolean value, int userId) { 538 checkSystemOrRoot("setSystemControlledUserRestriction"); 539 synchronized (mPackagesLock) { 540 Bundle restrictions = getUserRestrictions(userId); 541 restrictions.putBoolean(key, value); 542 setUserRestrictionsInternalLocked(restrictions, userId); 543 } 544 } 545 546 @Override 547 public void setUserRestrictions(Bundle restrictions, int userId) { 548 checkManageUsersPermission("setUserRestrictions"); 549 if (restrictions == null) return; 550 551 synchronized (mPackagesLock) { 552 final Bundle oldUserRestrictions = mUserRestrictions.get(userId); 553 // Restore the original state of system controlled restrictions from oldUserRestrictions 554 for (String key : SYSTEM_CONTROLLED_RESTRICTIONS) { 555 restrictions.remove(key); 556 if (oldUserRestrictions.containsKey(key)) { 557 restrictions.putBoolean(key, oldUserRestrictions.getBoolean(key)); 558 } 559 } 560 setUserRestrictionsInternalLocked(restrictions, userId); 561 } 562 } 563 564 private void setUserRestrictionsInternalLocked(Bundle restrictions, int userId) { 565 final Bundle userRestrictions = mUserRestrictions.get(userId); 566 userRestrictions.clear(); 567 userRestrictions.putAll(restrictions); 568 long token = Binder.clearCallingIdentity(); 569 try { 570 mAppOpsService.setUserRestrictions(userRestrictions, userId); 571 } catch (RemoteException e) { 572 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 573 } finally { 574 Binder.restoreCallingIdentity(token); 575 } 576 scheduleWriteUserLocked(mUsers.get(userId)); 577 } 578 579 /** 580 * Check if we've hit the limit of how many users can be created. 581 */ 582 private boolean isUserLimitReachedLocked() { 583 return getAliveUsersExcludingGuestsCountLocked() >= UserManager.getMaxSupportedUsers(); 584 } 585 586 @Override 587 public boolean canAddMoreManagedProfiles() { 588 checkManageUsersPermission("check if more managed profiles can be added."); 589 if (ActivityManager.isLowRamDeviceStatic()) { 590 return false; 591 } 592 synchronized(mPackagesLock) { 593 // Limit number of managed profiles that can be created 594 if (numberOfUsersOfTypeLocked(UserInfo.FLAG_MANAGED_PROFILE, true) 595 >= MAX_MANAGED_PROFILES) { 596 return false; 597 } 598 int usersCount = getAliveUsersExcludingGuestsCountLocked(); 599 // We allow creating a managed profile in the special case where there is only one user. 600 return usersCount == 1 || usersCount < UserManager.getMaxSupportedUsers(); 601 } 602 } 603 604 private int getAliveUsersExcludingGuestsCountLocked() { 605 int aliveUserCount = 0; 606 final int totalUserCount = mUsers.size(); 607 // Skip over users being removed 608 for (int i = 0; i < totalUserCount; i++) { 609 UserInfo user = mUsers.valueAt(i); 610 if (!mRemovingUserIds.get(user.id) 611 && !user.isGuest() && !user.partial) { 612 aliveUserCount++; 613 } 614 } 615 return aliveUserCount; 616 } 617 618 /** 619 * Enforces that only the system UID or root's UID or apps that have the 620 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 621 * permission can make certain calls to the UserManager. 622 * 623 * @param message used as message if SecurityException is thrown 624 * @throws SecurityException if the caller is not system or root 625 */ 626 private static final void checkManageUsersPermission(String message) { 627 final int uid = Binder.getCallingUid(); 628 if (uid != Process.SYSTEM_UID && uid != 0 629 && ActivityManager.checkComponentPermission( 630 android.Manifest.permission.MANAGE_USERS, 631 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 632 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 633 } 634 } 635 636 private static void checkSystemOrRoot(String message) { 637 final int uid = Binder.getCallingUid(); 638 if (uid != Process.SYSTEM_UID && uid != 0) { 639 throw new SecurityException("Only system may call: " + message); 640 } 641 } 642 643 private void writeBitmapLocked(UserInfo info, Bitmap bitmap) { 644 try { 645 File dir = new File(mUsersDir, Integer.toString(info.id)); 646 File file = new File(dir, USER_PHOTO_FILENAME); 647 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 648 if (!dir.exists()) { 649 dir.mkdir(); 650 FileUtils.setPermissions( 651 dir.getPath(), 652 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 653 -1, -1); 654 } 655 FileOutputStream os; 656 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 657 && tmp.renameTo(file)) { 658 info.iconPath = file.getAbsolutePath(); 659 } 660 try { 661 os.close(); 662 } catch (IOException ioe) { 663 // What the ... ! 664 } 665 tmp.delete(); 666 } catch (FileNotFoundException e) { 667 Slog.w(LOG_TAG, "Error setting photo for user ", e); 668 } 669 } 670 671 /** 672 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 673 * cache it elsewhere. 674 * @return the array of user ids. 675 */ 676 public int[] getUserIds() { 677 synchronized (mPackagesLock) { 678 return mUserIds; 679 } 680 } 681 682 int[] getUserIdsLPr() { 683 return mUserIds; 684 } 685 686 private void readUserListLocked() { 687 if (!mUserListFile.exists()) { 688 fallbackToSingleUserLocked(); 689 return; 690 } 691 FileInputStream fis = null; 692 AtomicFile userListFile = new AtomicFile(mUserListFile); 693 try { 694 fis = userListFile.openRead(); 695 XmlPullParser parser = Xml.newPullParser(); 696 parser.setInput(fis, StandardCharsets.UTF_8.name()); 697 int type; 698 while ((type = parser.next()) != XmlPullParser.START_TAG 699 && type != XmlPullParser.END_DOCUMENT) { 700 ; 701 } 702 703 if (type != XmlPullParser.START_TAG) { 704 Slog.e(LOG_TAG, "Unable to read user list"); 705 fallbackToSingleUserLocked(); 706 return; 707 } 708 709 mNextSerialNumber = -1; 710 if (parser.getName().equals(TAG_USERS)) { 711 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 712 if (lastSerialNumber != null) { 713 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 714 } 715 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 716 if (versionNumber != null) { 717 mUserVersion = Integer.parseInt(versionNumber); 718 } 719 } 720 721 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 722 if (type == XmlPullParser.START_TAG) { 723 final String name = parser.getName(); 724 if (name.equals(TAG_USER)) { 725 String id = parser.getAttributeValue(null, ATTR_ID); 726 UserInfo user = readUserLocked(Integer.parseInt(id)); 727 728 if (user != null) { 729 mUsers.put(user.id, user); 730 if (mNextSerialNumber < 0 || mNextSerialNumber <= user.id) { 731 mNextSerialNumber = user.id + 1; 732 } 733 } 734 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 735 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 736 && type != XmlPullParser.END_TAG) { 737 if (type == XmlPullParser.START_TAG) { 738 if (parser.getName().equals(TAG_RESTRICTIONS)) { 739 readRestrictionsLocked(parser, mGuestRestrictions); 740 } 741 break; 742 } 743 } 744 } 745 } 746 } 747 updateUserIdsLocked(); 748 upgradeIfNecessaryLocked(); 749 } catch (IOException ioe) { 750 fallbackToSingleUserLocked(); 751 } catch (XmlPullParserException pe) { 752 fallbackToSingleUserLocked(); 753 } finally { 754 if (fis != null) { 755 try { 756 fis.close(); 757 } catch (IOException e) { 758 } 759 } 760 } 761 } 762 763 /** 764 * Upgrade steps between versions, either for fixing bugs or changing the data format. 765 */ 766 private void upgradeIfNecessaryLocked() { 767 int userVersion = mUserVersion; 768 if (userVersion < 1) { 769 // Assign a proper name for the owner, if not initialized correctly before 770 UserInfo user = mUsers.get(UserHandle.USER_OWNER); 771 if ("Primary".equals(user.name)) { 772 user.name = mContext.getResources().getString(com.android.internal.R.string.owner_name); 773 scheduleWriteUserLocked(user); 774 } 775 userVersion = 1; 776 } 777 778 if (userVersion < 2) { 779 // Owner should be marked as initialized 780 UserInfo user = mUsers.get(UserHandle.USER_OWNER); 781 if ((user.flags & UserInfo.FLAG_INITIALIZED) == 0) { 782 user.flags |= UserInfo.FLAG_INITIALIZED; 783 scheduleWriteUserLocked(user); 784 } 785 userVersion = 2; 786 } 787 788 789 if (userVersion < 4) { 790 userVersion = 4; 791 } 792 793 if (userVersion < 5) { 794 initDefaultGuestRestrictions(); 795 userVersion = 5; 796 } 797 798 if (userVersion < USER_VERSION) { 799 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 800 + USER_VERSION); 801 } else { 802 mUserVersion = userVersion; 803 writeUserListLocked(); 804 } 805 } 806 807 private void fallbackToSingleUserLocked() { 808 // Create the primary user 809 UserInfo primary = new UserInfo(UserHandle.USER_OWNER, 810 mContext.getResources().getString(com.android.internal.R.string.owner_name), null, 811 UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY | UserInfo.FLAG_INITIALIZED); 812 mUsers.put(0, primary); 813 mNextSerialNumber = MIN_USER_ID; 814 mUserVersion = USER_VERSION; 815 816 Bundle restrictions = new Bundle(); 817 mUserRestrictions.append(UserHandle.USER_OWNER, restrictions); 818 819 updateUserIdsLocked(); 820 initDefaultGuestRestrictions(); 821 822 writeUserListLocked(); 823 writeUserLocked(primary); 824 } 825 826 private void scheduleWriteUserLocked(UserInfo userInfo) { 827 if (!mHandler.hasMessages(WRITE_USER_MSG, userInfo)) { 828 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, userInfo); 829 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 830 } 831 } 832 833 /* 834 * Writes the user file in this format: 835 * 836 * <user flags="20039023" id="0"> 837 * <name>Primary</name> 838 * </user> 839 */ 840 private void writeUserLocked(UserInfo userInfo) { 841 FileOutputStream fos = null; 842 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userInfo.id + XML_SUFFIX)); 843 try { 844 fos = userFile.startWrite(); 845 final BufferedOutputStream bos = new BufferedOutputStream(fos); 846 847 // XmlSerializer serializer = XmlUtils.serializerInstance(); 848 final XmlSerializer serializer = new FastXmlSerializer(); 849 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 850 serializer.startDocument(null, true); 851 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 852 853 serializer.startTag(null, TAG_USER); 854 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 855 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 856 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 857 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 858 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 859 Long.toString(userInfo.lastLoggedInTime)); 860 if (userInfo.iconPath != null) { 861 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 862 } 863 if (userInfo.partial) { 864 serializer.attribute(null, ATTR_PARTIAL, "true"); 865 } 866 if (userInfo.guestToRemove) { 867 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 868 } 869 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 870 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 871 Integer.toString(userInfo.profileGroupId)); 872 } 873 874 serializer.startTag(null, TAG_NAME); 875 serializer.text(userInfo.name); 876 serializer.endTag(null, TAG_NAME); 877 Bundle restrictions = mUserRestrictions.get(userInfo.id); 878 if (restrictions != null) { 879 writeRestrictionsLocked(serializer, restrictions); 880 } 881 serializer.endTag(null, TAG_USER); 882 883 serializer.endDocument(); 884 userFile.finishWrite(fos); 885 } catch (Exception ioe) { 886 Slog.e(LOG_TAG, "Error writing user info " + userInfo.id + "\n" + ioe); 887 userFile.failWrite(fos); 888 } 889 } 890 891 /* 892 * Writes the user list file in this format: 893 * 894 * <users nextSerialNumber="3"> 895 * <user id="0"></user> 896 * <user id="2"></user> 897 * </users> 898 */ 899 private void writeUserListLocked() { 900 FileOutputStream fos = null; 901 AtomicFile userListFile = new AtomicFile(mUserListFile); 902 try { 903 fos = userListFile.startWrite(); 904 final BufferedOutputStream bos = new BufferedOutputStream(fos); 905 906 // XmlSerializer serializer = XmlUtils.serializerInstance(); 907 final XmlSerializer serializer = new FastXmlSerializer(); 908 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 909 serializer.startDocument(null, true); 910 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 911 912 serializer.startTag(null, TAG_USERS); 913 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 914 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 915 916 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 917 writeRestrictionsLocked(serializer, mGuestRestrictions); 918 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 919 for (int i = 0; i < mUsers.size(); i++) { 920 UserInfo user = mUsers.valueAt(i); 921 serializer.startTag(null, TAG_USER); 922 serializer.attribute(null, ATTR_ID, Integer.toString(user.id)); 923 serializer.endTag(null, TAG_USER); 924 } 925 926 serializer.endTag(null, TAG_USERS); 927 928 serializer.endDocument(); 929 userListFile.finishWrite(fos); 930 } catch (Exception e) { 931 userListFile.failWrite(fos); 932 Slog.e(LOG_TAG, "Error writing user list"); 933 } 934 } 935 936 private void writeRestrictionsLocked(XmlSerializer serializer, Bundle restrictions) 937 throws IOException { 938 serializer.startTag(null, TAG_RESTRICTIONS); 939 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_WIFI); 940 writeBoolean(serializer, restrictions, UserManager.DISALLOW_MODIFY_ACCOUNTS); 941 writeBoolean(serializer, restrictions, UserManager.DISALLOW_INSTALL_APPS); 942 writeBoolean(serializer, restrictions, UserManager.DISALLOW_UNINSTALL_APPS); 943 writeBoolean(serializer, restrictions, UserManager.DISALLOW_SHARE_LOCATION); 944 writeBoolean(serializer, restrictions, 945 UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES); 946 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_BLUETOOTH); 947 writeBoolean(serializer, restrictions, UserManager.DISALLOW_USB_FILE_TRANSFER); 948 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_CREDENTIALS); 949 writeBoolean(serializer, restrictions, UserManager.DISALLOW_REMOVE_USER); 950 writeBoolean(serializer, restrictions, UserManager.DISALLOW_DEBUGGING_FEATURES); 951 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_VPN); 952 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_TETHERING); 953 writeBoolean(serializer, restrictions, UserManager.DISALLOW_NETWORK_RESET); 954 writeBoolean(serializer, restrictions, UserManager.DISALLOW_FACTORY_RESET); 955 writeBoolean(serializer, restrictions, UserManager.DISALLOW_ADD_USER); 956 writeBoolean(serializer, restrictions, UserManager.ENSURE_VERIFY_APPS); 957 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_CELL_BROADCASTS); 958 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS); 959 writeBoolean(serializer, restrictions, UserManager.DISALLOW_APPS_CONTROL); 960 writeBoolean(serializer, restrictions, UserManager.DISALLOW_MOUNT_PHYSICAL_MEDIA); 961 writeBoolean(serializer, restrictions, UserManager.DISALLOW_UNMUTE_MICROPHONE); 962 writeBoolean(serializer, restrictions, UserManager.DISALLOW_ADJUST_VOLUME); 963 writeBoolean(serializer, restrictions, UserManager.DISALLOW_OUTGOING_CALLS); 964 writeBoolean(serializer, restrictions, UserManager.DISALLOW_SMS); 965 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CREATE_WINDOWS); 966 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CROSS_PROFILE_COPY_PASTE); 967 writeBoolean(serializer, restrictions, UserManager.DISALLOW_OUTGOING_BEAM); 968 writeBoolean(serializer, restrictions, UserManager.DISALLOW_WALLPAPER); 969 writeBoolean(serializer, restrictions, UserManager.DISALLOW_SAFE_BOOT); 970 serializer.endTag(null, TAG_RESTRICTIONS); 971 } 972 973 private UserInfo readUserLocked(int id) { 974 int flags = 0; 975 int serialNumber = id; 976 String name = null; 977 String iconPath = null; 978 long creationTime = 0L; 979 long lastLoggedInTime = 0L; 980 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 981 boolean partial = false; 982 boolean guestToRemove = false; 983 Bundle restrictions = new Bundle(); 984 985 FileInputStream fis = null; 986 try { 987 AtomicFile userFile = 988 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 989 fis = userFile.openRead(); 990 XmlPullParser parser = Xml.newPullParser(); 991 parser.setInput(fis, StandardCharsets.UTF_8.name()); 992 int type; 993 while ((type = parser.next()) != XmlPullParser.START_TAG 994 && type != XmlPullParser.END_DOCUMENT) { 995 ; 996 } 997 998 if (type != XmlPullParser.START_TAG) { 999 Slog.e(LOG_TAG, "Unable to read user " + id); 1000 return null; 1001 } 1002 1003 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 1004 int storedId = readIntAttribute(parser, ATTR_ID, -1); 1005 if (storedId != id) { 1006 Slog.e(LOG_TAG, "User id does not match the file name"); 1007 return null; 1008 } 1009 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 1010 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 1011 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 1012 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 1013 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 1014 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 1015 UserInfo.NO_PROFILE_GROUP_ID); 1016 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 1017 if ("true".equals(valueString)) { 1018 partial = true; 1019 } 1020 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 1021 if ("true".equals(valueString)) { 1022 guestToRemove = true; 1023 } 1024 1025 int outerDepth = parser.getDepth(); 1026 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1027 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1028 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1029 continue; 1030 } 1031 String tag = parser.getName(); 1032 if (TAG_NAME.equals(tag)) { 1033 type = parser.next(); 1034 if (type == XmlPullParser.TEXT) { 1035 name = parser.getText(); 1036 } 1037 } else if (TAG_RESTRICTIONS.equals(tag)) { 1038 readRestrictionsLocked(parser, restrictions); 1039 } 1040 } 1041 } 1042 1043 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 1044 userInfo.serialNumber = serialNumber; 1045 userInfo.creationTime = creationTime; 1046 userInfo.lastLoggedInTime = lastLoggedInTime; 1047 userInfo.partial = partial; 1048 userInfo.guestToRemove = guestToRemove; 1049 userInfo.profileGroupId = profileGroupId; 1050 mUserRestrictions.append(id, restrictions); 1051 return userInfo; 1052 1053 } catch (IOException ioe) { 1054 } catch (XmlPullParserException pe) { 1055 } finally { 1056 if (fis != null) { 1057 try { 1058 fis.close(); 1059 } catch (IOException e) { 1060 } 1061 } 1062 } 1063 return null; 1064 } 1065 1066 private void readRestrictionsLocked(XmlPullParser parser, Bundle restrictions) 1067 throws IOException { 1068 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_WIFI); 1069 readBoolean(parser, restrictions, UserManager.DISALLOW_MODIFY_ACCOUNTS); 1070 readBoolean(parser, restrictions, UserManager.DISALLOW_INSTALL_APPS); 1071 readBoolean(parser, restrictions, UserManager.DISALLOW_UNINSTALL_APPS); 1072 readBoolean(parser, restrictions, UserManager.DISALLOW_SHARE_LOCATION); 1073 readBoolean(parser, restrictions, 1074 UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES); 1075 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_BLUETOOTH); 1076 readBoolean(parser, restrictions, UserManager.DISALLOW_USB_FILE_TRANSFER); 1077 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_CREDENTIALS); 1078 readBoolean(parser, restrictions, UserManager.DISALLOW_REMOVE_USER); 1079 readBoolean(parser, restrictions, UserManager.DISALLOW_DEBUGGING_FEATURES); 1080 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_VPN); 1081 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_TETHERING); 1082 readBoolean(parser, restrictions, UserManager.DISALLOW_NETWORK_RESET); 1083 readBoolean(parser, restrictions, UserManager.DISALLOW_FACTORY_RESET); 1084 readBoolean(parser, restrictions, UserManager.DISALLOW_ADD_USER); 1085 readBoolean(parser, restrictions, UserManager.ENSURE_VERIFY_APPS); 1086 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_CELL_BROADCASTS); 1087 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS); 1088 readBoolean(parser, restrictions, UserManager.DISALLOW_APPS_CONTROL); 1089 readBoolean(parser, restrictions, 1090 UserManager.DISALLOW_MOUNT_PHYSICAL_MEDIA); 1091 readBoolean(parser, restrictions, UserManager.DISALLOW_UNMUTE_MICROPHONE); 1092 readBoolean(parser, restrictions, UserManager.DISALLOW_ADJUST_VOLUME); 1093 readBoolean(parser, restrictions, UserManager.DISALLOW_OUTGOING_CALLS); 1094 readBoolean(parser, restrictions, UserManager.DISALLOW_SMS); 1095 readBoolean(parser, restrictions, UserManager.DISALLOW_CREATE_WINDOWS); 1096 readBoolean(parser, restrictions, UserManager.DISALLOW_CROSS_PROFILE_COPY_PASTE); 1097 readBoolean(parser, restrictions, UserManager.DISALLOW_OUTGOING_BEAM); 1098 readBoolean(parser, restrictions, UserManager.DISALLOW_WALLPAPER); 1099 readBoolean(parser, restrictions, UserManager.DISALLOW_SAFE_BOOT); 1100 } 1101 1102 private void readBoolean(XmlPullParser parser, Bundle restrictions, 1103 String restrictionKey) { 1104 String value = parser.getAttributeValue(null, restrictionKey); 1105 if (value != null) { 1106 restrictions.putBoolean(restrictionKey, Boolean.parseBoolean(value)); 1107 } 1108 } 1109 1110 private void writeBoolean(XmlSerializer xml, Bundle restrictions, String restrictionKey) 1111 throws IOException { 1112 if (restrictions.containsKey(restrictionKey)) { 1113 xml.attribute(null, restrictionKey, 1114 Boolean.toString(restrictions.getBoolean(restrictionKey))); 1115 } 1116 } 1117 1118 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 1119 String valueString = parser.getAttributeValue(null, attr); 1120 if (valueString == null) return defaultValue; 1121 try { 1122 return Integer.parseInt(valueString); 1123 } catch (NumberFormatException nfe) { 1124 return defaultValue; 1125 } 1126 } 1127 1128 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 1129 String valueString = parser.getAttributeValue(null, attr); 1130 if (valueString == null) return defaultValue; 1131 try { 1132 return Long.parseLong(valueString); 1133 } catch (NumberFormatException nfe) { 1134 return defaultValue; 1135 } 1136 } 1137 1138 private boolean isPackageInstalled(String pkg, int userId) { 1139 final ApplicationInfo info = mPm.getApplicationInfo(pkg, 1140 PackageManager.GET_UNINSTALLED_PACKAGES, 1141 userId); 1142 if (info == null || (info.flags&ApplicationInfo.FLAG_INSTALLED) == 0) { 1143 return false; 1144 } 1145 return true; 1146 } 1147 1148 /** 1149 * Removes all the restrictions files (res_<packagename>) for a given user. 1150 * Does not do any permissions checking. 1151 */ 1152 private void cleanAppRestrictions(int userId) { 1153 synchronized (mPackagesLock) { 1154 File dir = Environment.getUserSystemDirectory(userId); 1155 String[] files = dir.list(); 1156 if (files == null) return; 1157 for (String fileName : files) { 1158 if (fileName.startsWith(RESTRICTIONS_FILE_PREFIX)) { 1159 File resFile = new File(dir, fileName); 1160 if (resFile.exists()) { 1161 resFile.delete(); 1162 } 1163 } 1164 } 1165 } 1166 } 1167 1168 /** 1169 * Removes the app restrictions file for a specific package and user id, if it exists. 1170 */ 1171 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 1172 synchronized (mPackagesLock) { 1173 File dir = Environment.getUserSystemDirectory(userId); 1174 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 1175 if (resFile.exists()) { 1176 resFile.delete(); 1177 } 1178 } 1179 } 1180 1181 @Override 1182 public UserInfo createProfileForUser(String name, int flags, int userId) { 1183 checkManageUsersPermission("Only the system can create users"); 1184 if (userId != UserHandle.USER_OWNER) { 1185 Slog.w(LOG_TAG, "Only user owner can have profiles"); 1186 return null; 1187 } 1188 return createUserInternal(name, flags, userId); 1189 } 1190 1191 @Override 1192 public UserInfo createUser(String name, int flags) { 1193 checkManageUsersPermission("Only the system can create users"); 1194 return createUserInternal(name, flags, UserHandle.USER_NULL); 1195 } 1196 1197 private UserInfo createUserInternal(String name, int flags, int parentId) { 1198 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1199 UserManager.DISALLOW_ADD_USER, false)) { 1200 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 1201 return null; 1202 } 1203 if (ActivityManager.isLowRamDeviceStatic()) { 1204 return null; 1205 } 1206 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 1207 final boolean isManagedProfile = (flags & UserInfo.FLAG_MANAGED_PROFILE) != 0; 1208 final long ident = Binder.clearCallingIdentity(); 1209 UserInfo userInfo = null; 1210 try { 1211 synchronized (mInstallLock) { 1212 synchronized (mPackagesLock) { 1213 UserInfo parent = null; 1214 if (parentId != UserHandle.USER_NULL) { 1215 parent = getUserInfoLocked(parentId); 1216 if (parent == null) return null; 1217 } 1218 if (isManagedProfile && !canAddMoreManagedProfiles()) { 1219 return null; 1220 } 1221 if (!isGuest && !isManagedProfile && isUserLimitReachedLocked()) { 1222 // If we're not adding a guest user or a managed profile and the limit has 1223 // been reached, cannot add a user. 1224 return null; 1225 } 1226 // If we're adding a guest and there already exists one, bail. 1227 if (isGuest && findCurrentGuestUserLocked() != null) { 1228 return null; 1229 } 1230 int userId = getNextAvailableIdLocked(); 1231 userInfo = new UserInfo(userId, name, null, flags); 1232 File userPath = new File(mBaseUserPath, Integer.toString(userId)); 1233 userInfo.serialNumber = mNextSerialNumber++; 1234 long now = System.currentTimeMillis(); 1235 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 1236 userInfo.partial = true; 1237 Environment.getUserSystemDirectory(userInfo.id).mkdirs(); 1238 mUsers.put(userId, userInfo); 1239 writeUserListLocked(); 1240 if (parent != null) { 1241 if (parent.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 1242 parent.profileGroupId = parent.id; 1243 scheduleWriteUserLocked(parent); 1244 } 1245 userInfo.profileGroupId = parent.profileGroupId; 1246 } 1247 mPm.createNewUserLILPw(userId, userPath); 1248 userInfo.partial = false; 1249 scheduleWriteUserLocked(userInfo); 1250 updateUserIdsLocked(); 1251 Bundle restrictions = new Bundle(); 1252 mUserRestrictions.append(userId, restrictions); 1253 mPm.newUserCreatedLILPw(userId); 1254 } 1255 } 1256 if (userInfo != null) { 1257 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 1258 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userInfo.id); 1259 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 1260 android.Manifest.permission.MANAGE_USERS); 1261 } 1262 } finally { 1263 Binder.restoreCallingIdentity(ident); 1264 } 1265 return userInfo; 1266 } 1267 1268 private int numberOfUsersOfTypeLocked(int flags, boolean excludeDying) { 1269 int count = 0; 1270 for (int i = mUsers.size() - 1; i >= 0; i--) { 1271 UserInfo user = mUsers.valueAt(i); 1272 if (!excludeDying || !mRemovingUserIds.get(user.id)) { 1273 if ((user.flags & flags) != 0) { 1274 count++; 1275 } 1276 } 1277 } 1278 return count; 1279 } 1280 1281 /** 1282 * Find the current guest user. If the Guest user is partial, 1283 * then do not include it in the results as it is about to die. 1284 * This is different than {@link #numberOfUsersOfTypeLocked(int, boolean)} due to 1285 * the special handling of Guests being removed. 1286 */ 1287 private UserInfo findCurrentGuestUserLocked() { 1288 final int size = mUsers.size(); 1289 for (int i = 0; i < size; i++) { 1290 final UserInfo user = mUsers.valueAt(i); 1291 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 1292 return user; 1293 } 1294 } 1295 return null; 1296 } 1297 1298 /** 1299 * Mark this guest user for deletion to allow us to create another guest 1300 * and switch to that user before actually removing this guest. 1301 * @param userHandle the userid of the current guest 1302 * @return whether the user could be marked for deletion 1303 */ 1304 public boolean markGuestForDeletion(int userHandle) { 1305 checkManageUsersPermission("Only the system can remove users"); 1306 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1307 UserManager.DISALLOW_REMOVE_USER, false)) { 1308 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 1309 return false; 1310 } 1311 1312 long ident = Binder.clearCallingIdentity(); 1313 try { 1314 final UserInfo user; 1315 synchronized (mPackagesLock) { 1316 user = mUsers.get(userHandle); 1317 if (userHandle == 0 || user == null || mRemovingUserIds.get(userHandle)) { 1318 return false; 1319 } 1320 if (!user.isGuest()) { 1321 return false; 1322 } 1323 // We set this to a guest user that is to be removed. This is a temporary state 1324 // where we are allowed to add new Guest users, even if this one is still not 1325 // removed. This user will still show up in getUserInfo() calls. 1326 // If we don't get around to removing this Guest user, it will be purged on next 1327 // startup. 1328 user.guestToRemove = true; 1329 // Mark it as disabled, so that it isn't returned any more when 1330 // profiles are queried. 1331 user.flags |= UserInfo.FLAG_DISABLED; 1332 writeUserLocked(user); 1333 } 1334 } finally { 1335 Binder.restoreCallingIdentity(ident); 1336 } 1337 return true; 1338 } 1339 1340 /** 1341 * Removes a user and all data directories created for that user. This method should be called 1342 * after the user's processes have been terminated. 1343 * @param userHandle the user's id 1344 */ 1345 public boolean removeUser(int userHandle) { 1346 checkManageUsersPermission("Only the system can remove users"); 1347 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1348 UserManager.DISALLOW_REMOVE_USER, false)) { 1349 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 1350 return false; 1351 } 1352 1353 long ident = Binder.clearCallingIdentity(); 1354 try { 1355 final UserInfo user; 1356 synchronized (mPackagesLock) { 1357 user = mUsers.get(userHandle); 1358 if (userHandle == 0 || user == null || mRemovingUserIds.get(userHandle)) { 1359 return false; 1360 } 1361 1362 // We remember deleted user IDs to prevent them from being 1363 // reused during the current boot; they can still be reused 1364 // after a reboot. 1365 mRemovingUserIds.put(userHandle, true); 1366 1367 try { 1368 mAppOpsService.removeUser(userHandle); 1369 } catch (RemoteException e) { 1370 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 1371 } 1372 // Set this to a partially created user, so that the user will be purged 1373 // on next startup, in case the runtime stops now before stopping and 1374 // removing the user completely. 1375 user.partial = true; 1376 // Mark it as disabled, so that it isn't returned any more when 1377 // profiles are queried. 1378 user.flags |= UserInfo.FLAG_DISABLED; 1379 writeUserLocked(user); 1380 } 1381 1382 if (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 1383 && user.isManagedProfile()) { 1384 // Send broadcast to notify system that the user removed was a 1385 // managed user. 1386 sendProfileRemovedBroadcast(user.profileGroupId, user.id); 1387 } 1388 1389 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 1390 int res; 1391 try { 1392 res = ActivityManagerNative.getDefault().stopUser(userHandle, 1393 new IStopUserCallback.Stub() { 1394 @Override 1395 public void userStopped(int userId) { 1396 finishRemoveUser(userId); 1397 } 1398 @Override 1399 public void userStopAborted(int userId) { 1400 } 1401 }); 1402 } catch (RemoteException e) { 1403 return false; 1404 } 1405 return res == ActivityManager.USER_OP_SUCCESS; 1406 } finally { 1407 Binder.restoreCallingIdentity(ident); 1408 } 1409 } 1410 1411 void finishRemoveUser(final int userHandle) { 1412 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 1413 // Let other services shutdown any activity and clean up their state before completely 1414 // wiping the user's system directory and removing from the user list 1415 long ident = Binder.clearCallingIdentity(); 1416 try { 1417 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 1418 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 1419 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 1420 android.Manifest.permission.MANAGE_USERS, 1421 1422 new BroadcastReceiver() { 1423 @Override 1424 public void onReceive(Context context, Intent intent) { 1425 if (DBG) { 1426 Slog.i(LOG_TAG, 1427 "USER_REMOVED broadcast sent, cleaning up user data " 1428 + userHandle); 1429 } 1430 new Thread() { 1431 public void run() { 1432 synchronized (mInstallLock) { 1433 synchronized (mPackagesLock) { 1434 removeUserStateLocked(userHandle); 1435 } 1436 } 1437 } 1438 }.start(); 1439 } 1440 }, 1441 1442 null, Activity.RESULT_OK, null, null); 1443 } finally { 1444 Binder.restoreCallingIdentity(ident); 1445 } 1446 } 1447 1448 private void removeUserStateLocked(final int userHandle) { 1449 // Cleanup package manager settings 1450 mPm.cleanUpUserLILPw(this, userHandle); 1451 1452 // Remove this user from the list 1453 mUsers.remove(userHandle); 1454 // Remove user file 1455 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 1456 userFile.delete(); 1457 // Update the user list 1458 writeUserListLocked(); 1459 updateUserIdsLocked(); 1460 removeDirectoryRecursive(Environment.getUserSystemDirectory(userHandle)); 1461 } 1462 1463 private void removeDirectoryRecursive(File parent) { 1464 if (parent.isDirectory()) { 1465 String[] files = parent.list(); 1466 for (String filename : files) { 1467 File child = new File(parent, filename); 1468 removeDirectoryRecursive(child); 1469 } 1470 } 1471 parent.delete(); 1472 } 1473 1474 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 1475 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 1476 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 1477 Intent.FLAG_RECEIVER_FOREGROUND); 1478 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 1479 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 1480 } 1481 1482 @Override 1483 public Bundle getApplicationRestrictions(String packageName) { 1484 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 1485 } 1486 1487 @Override 1488 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 1489 if (UserHandle.getCallingUserId() != userId 1490 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 1491 checkManageUsersPermission("Only system can get restrictions for other users/apps"); 1492 } 1493 synchronized (mPackagesLock) { 1494 // Read the restrictions from XML 1495 return readApplicationRestrictionsLocked(packageName, userId); 1496 } 1497 } 1498 1499 @Override 1500 public void setApplicationRestrictions(String packageName, Bundle restrictions, 1501 int userId) { 1502 if (UserHandle.getCallingUserId() != userId 1503 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 1504 checkManageUsersPermission("Only system can set restrictions for other users/apps"); 1505 } 1506 synchronized (mPackagesLock) { 1507 if (restrictions == null || restrictions.isEmpty()) { 1508 cleanAppRestrictionsForPackage(packageName, userId); 1509 } else { 1510 // Write the restrictions to XML 1511 writeApplicationRestrictionsLocked(packageName, restrictions, userId); 1512 } 1513 } 1514 1515 if (isPackageInstalled(packageName, userId)) { 1516 // Notify package of changes via an intent - only sent to explicitly registered receivers. 1517 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 1518 changeIntent.setPackage(packageName); 1519 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1520 mContext.sendBroadcastAsUser(changeIntent, new UserHandle(userId)); 1521 } 1522 } 1523 1524 @Override 1525 public void removeRestrictions() { 1526 checkManageUsersPermission("Only system can remove restrictions"); 1527 final int userHandle = UserHandle.getCallingUserId(); 1528 removeRestrictionsForUser(userHandle, true); 1529 } 1530 1531 private void removeRestrictionsForUser(final int userHandle, boolean unhideApps) { 1532 synchronized (mPackagesLock) { 1533 // Remove all user restrictions 1534 setUserRestrictions(new Bundle(), userHandle); 1535 // Remove any app restrictions 1536 cleanAppRestrictions(userHandle); 1537 } 1538 if (unhideApps) { 1539 unhideAllInstalledAppsForUser(userHandle); 1540 } 1541 } 1542 1543 private void unhideAllInstalledAppsForUser(final int userHandle) { 1544 mHandler.post(new Runnable() { 1545 @Override 1546 public void run() { 1547 List<ApplicationInfo> apps = 1548 mPm.getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES, 1549 userHandle).getList(); 1550 final long ident = Binder.clearCallingIdentity(); 1551 try { 1552 for (ApplicationInfo appInfo : apps) { 1553 if ((appInfo.flags & ApplicationInfo.FLAG_INSTALLED) != 0 1554 && (appInfo.privateFlags & ApplicationInfo.PRIVATE_FLAG_HIDDEN) 1555 != 0) { 1556 mPm.setApplicationHiddenSettingAsUser(appInfo.packageName, false, 1557 userHandle); 1558 } 1559 } 1560 } finally { 1561 Binder.restoreCallingIdentity(ident); 1562 } 1563 } 1564 }); 1565 } 1566 private int getUidForPackage(String packageName) { 1567 long ident = Binder.clearCallingIdentity(); 1568 try { 1569 return mContext.getPackageManager().getApplicationInfo(packageName, 1570 PackageManager.GET_UNINSTALLED_PACKAGES).uid; 1571 } catch (NameNotFoundException nnfe) { 1572 return -1; 1573 } finally { 1574 Binder.restoreCallingIdentity(ident); 1575 } 1576 } 1577 1578 private Bundle readApplicationRestrictionsLocked(String packageName, 1579 int userId) { 1580 AtomicFile restrictionsFile = 1581 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 1582 packageToRestrictionsFileName(packageName))); 1583 return readApplicationRestrictionsLocked(restrictionsFile); 1584 } 1585 1586 @VisibleForTesting 1587 static Bundle readApplicationRestrictionsLocked(AtomicFile restrictionsFile) { 1588 final Bundle restrictions = new Bundle(); 1589 final ArrayList<String> values = new ArrayList<>(); 1590 if (!restrictionsFile.getBaseFile().exists()) { 1591 return restrictions; 1592 } 1593 1594 FileInputStream fis = null; 1595 try { 1596 fis = restrictionsFile.openRead(); 1597 XmlPullParser parser = Xml.newPullParser(); 1598 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1599 XmlUtils.nextElement(parser); 1600 if (parser.getEventType() != XmlPullParser.START_TAG) { 1601 Slog.e(LOG_TAG, "Unable to read restrictions file " 1602 + restrictionsFile.getBaseFile()); 1603 return restrictions; 1604 } 1605 while (parser.next() != XmlPullParser.END_DOCUMENT) { 1606 readEntry(restrictions, values, parser); 1607 } 1608 } catch (IOException|XmlPullParserException e) { 1609 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 1610 } finally { 1611 IoUtils.closeQuietly(fis); 1612 } 1613 return restrictions; 1614 } 1615 1616 private static void readEntry(Bundle restrictions, ArrayList<String> values, 1617 XmlPullParser parser) throws XmlPullParserException, IOException { 1618 int type = parser.getEventType(); 1619 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 1620 String key = parser.getAttributeValue(null, ATTR_KEY); 1621 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 1622 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 1623 if (multiple != null) { 1624 values.clear(); 1625 int count = Integer.parseInt(multiple); 1626 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1627 if (type == XmlPullParser.START_TAG 1628 && parser.getName().equals(TAG_VALUE)) { 1629 values.add(parser.nextText().trim()); 1630 count--; 1631 } 1632 } 1633 String [] valueStrings = new String[values.size()]; 1634 values.toArray(valueStrings); 1635 restrictions.putStringArray(key, valueStrings); 1636 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 1637 restrictions.putBundle(key, readBundleEntry(parser, values)); 1638 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 1639 final int outerDepth = parser.getDepth(); 1640 ArrayList<Bundle> bundleList = new ArrayList<>(); 1641 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 1642 Bundle childBundle = readBundleEntry(parser, values); 1643 bundleList.add(childBundle); 1644 } 1645 restrictions.putParcelableArray(key, 1646 bundleList.toArray(new Bundle[bundleList.size()])); 1647 } else { 1648 String value = parser.nextText().trim(); 1649 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 1650 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 1651 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 1652 restrictions.putInt(key, Integer.parseInt(value)); 1653 } else { 1654 restrictions.putString(key, value); 1655 } 1656 } 1657 } 1658 } 1659 1660 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 1661 throws IOException, XmlPullParserException { 1662 Bundle childBundle = new Bundle(); 1663 final int outerDepth = parser.getDepth(); 1664 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 1665 readEntry(childBundle, values, parser); 1666 } 1667 return childBundle; 1668 } 1669 1670 private void writeApplicationRestrictionsLocked(String packageName, 1671 Bundle restrictions, int userId) { 1672 AtomicFile restrictionsFile = new AtomicFile( 1673 new File(Environment.getUserSystemDirectory(userId), 1674 packageToRestrictionsFileName(packageName))); 1675 writeApplicationRestrictionsLocked(restrictions, restrictionsFile); 1676 } 1677 1678 @VisibleForTesting 1679 static void writeApplicationRestrictionsLocked(Bundle restrictions, 1680 AtomicFile restrictionsFile) { 1681 FileOutputStream fos = null; 1682 try { 1683 fos = restrictionsFile.startWrite(); 1684 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1685 1686 final XmlSerializer serializer = new FastXmlSerializer(); 1687 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1688 serializer.startDocument(null, true); 1689 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1690 1691 serializer.startTag(null, TAG_RESTRICTIONS); 1692 writeBundle(restrictions, serializer); 1693 serializer.endTag(null, TAG_RESTRICTIONS); 1694 1695 serializer.endDocument(); 1696 restrictionsFile.finishWrite(fos); 1697 } catch (Exception e) { 1698 restrictionsFile.failWrite(fos); 1699 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 1700 } 1701 } 1702 1703 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 1704 throws IOException { 1705 for (String key : restrictions.keySet()) { 1706 Object value = restrictions.get(key); 1707 serializer.startTag(null, TAG_ENTRY); 1708 serializer.attribute(null, ATTR_KEY, key); 1709 1710 if (value instanceof Boolean) { 1711 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 1712 serializer.text(value.toString()); 1713 } else if (value instanceof Integer) { 1714 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 1715 serializer.text(value.toString()); 1716 } else if (value == null || value instanceof String) { 1717 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 1718 serializer.text(value != null ? (String) value : ""); 1719 } else if (value instanceof Bundle) { 1720 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 1721 writeBundle((Bundle) value, serializer); 1722 } else if (value instanceof Parcelable[]) { 1723 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 1724 Parcelable[] array = (Parcelable[]) value; 1725 for (Parcelable parcelable : array) { 1726 if (!(parcelable instanceof Bundle)) { 1727 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 1728 } 1729 serializer.startTag(null, TAG_ENTRY); 1730 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 1731 writeBundle((Bundle) parcelable, serializer); 1732 serializer.endTag(null, TAG_ENTRY); 1733 } 1734 } else { 1735 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 1736 String[] values = (String[]) value; 1737 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 1738 for (String choice : values) { 1739 serializer.startTag(null, TAG_VALUE); 1740 serializer.text(choice != null ? choice : ""); 1741 serializer.endTag(null, TAG_VALUE); 1742 } 1743 } 1744 serializer.endTag(null, TAG_ENTRY); 1745 } 1746 } 1747 1748 @Override 1749 public int getUserSerialNumber(int userHandle) { 1750 synchronized (mPackagesLock) { 1751 if (!exists(userHandle)) return -1; 1752 return getUserInfoLocked(userHandle).serialNumber; 1753 } 1754 } 1755 1756 @Override 1757 public int getUserHandle(int userSerialNumber) { 1758 synchronized (mPackagesLock) { 1759 for (int userId : mUserIds) { 1760 UserInfo info = getUserInfoLocked(userId); 1761 if (info != null && info.serialNumber == userSerialNumber) return userId; 1762 } 1763 // Not found 1764 return -1; 1765 } 1766 } 1767 1768 @Override 1769 public long getUserCreationTime(int userHandle) { 1770 int callingUserId = UserHandle.getCallingUserId(); 1771 UserInfo userInfo = null; 1772 synchronized (mPackagesLock) { 1773 if (callingUserId == userHandle) { 1774 userInfo = getUserInfoLocked(userHandle); 1775 } else { 1776 UserInfo parent = getProfileParentLocked(userHandle); 1777 if (parent != null && parent.id == callingUserId) { 1778 userInfo = getUserInfoLocked(userHandle); 1779 } 1780 } 1781 } 1782 if (userInfo == null) { 1783 throw new SecurityException("userHandle can only be the calling user or a managed " 1784 + "profile associated with this user"); 1785 } 1786 return userInfo.creationTime; 1787 } 1788 1789 /** 1790 * Caches the list of user ids in an array, adjusting the array size when necessary. 1791 */ 1792 private void updateUserIdsLocked() { 1793 int num = 0; 1794 for (int i = 0; i < mUsers.size(); i++) { 1795 if (!mUsers.valueAt(i).partial) { 1796 num++; 1797 } 1798 } 1799 final int[] newUsers = new int[num]; 1800 int n = 0; 1801 for (int i = 0; i < mUsers.size(); i++) { 1802 if (!mUsers.valueAt(i).partial) { 1803 newUsers[n++] = mUsers.keyAt(i); 1804 } 1805 } 1806 mUserIds = newUsers; 1807 } 1808 1809 /** 1810 * Make a note of the last started time of a user and do some cleanup. 1811 * @param userId the user that was just foregrounded 1812 */ 1813 public void onUserForeground(int userId) { 1814 synchronized (mPackagesLock) { 1815 UserInfo user = mUsers.get(userId); 1816 long now = System.currentTimeMillis(); 1817 if (user == null || user.partial) { 1818 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 1819 return; 1820 } 1821 if (now > EPOCH_PLUS_30_YEARS) { 1822 user.lastLoggedInTime = now; 1823 scheduleWriteUserLocked(user); 1824 } 1825 } 1826 } 1827 1828 /** 1829 * Returns the next available user id, filling in any holes in the ids. 1830 * TODO: May not be a good idea to recycle ids, in case it results in confusion 1831 * for data and battery stats collection, or unexpected cross-talk. 1832 * @return 1833 */ 1834 private int getNextAvailableIdLocked() { 1835 synchronized (mPackagesLock) { 1836 int i = MIN_USER_ID; 1837 while (i < Integer.MAX_VALUE) { 1838 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 1839 break; 1840 } 1841 i++; 1842 } 1843 return i; 1844 } 1845 } 1846 1847 private String packageToRestrictionsFileName(String packageName) { 1848 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 1849 } 1850 1851 @Override 1852 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 1853 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 1854 != PackageManager.PERMISSION_GRANTED) { 1855 pw.println("Permission Denial: can't dump UserManager from from pid=" 1856 + Binder.getCallingPid() 1857 + ", uid=" + Binder.getCallingUid() 1858 + " without permission " 1859 + android.Manifest.permission.DUMP); 1860 return; 1861 } 1862 1863 long now = System.currentTimeMillis(); 1864 StringBuilder sb = new StringBuilder(); 1865 synchronized (mPackagesLock) { 1866 pw.println("Users:"); 1867 for (int i = 0; i < mUsers.size(); i++) { 1868 UserInfo user = mUsers.valueAt(i); 1869 if (user == null) continue; 1870 pw.print(" "); pw.print(user); pw.print(" serialNo="); pw.print(user.serialNumber); 1871 if (mRemovingUserIds.get(mUsers.keyAt(i))) pw.print(" <removing> "); 1872 if (user.partial) pw.print(" <partial>"); 1873 pw.println(); 1874 pw.print(" Created: "); 1875 if (user.creationTime == 0) { 1876 pw.println("<unknown>"); 1877 } else { 1878 sb.setLength(0); 1879 TimeUtils.formatDuration(now - user.creationTime, sb); 1880 sb.append(" ago"); 1881 pw.println(sb); 1882 } 1883 pw.print(" Last logged in: "); 1884 if (user.lastLoggedInTime == 0) { 1885 pw.println("<unknown>"); 1886 } else { 1887 sb.setLength(0); 1888 TimeUtils.formatDuration(now - user.lastLoggedInTime, sb); 1889 sb.append(" ago"); 1890 pw.println(sb); 1891 } 1892 } 1893 } 1894 } 1895 1896 final class MainHandler extends Handler { 1897 1898 @Override 1899 public void handleMessage(Message msg) { 1900 switch (msg.what) { 1901 case WRITE_USER_MSG: 1902 removeMessages(WRITE_USER_MSG, msg.obj); 1903 synchronized (mPackagesLock) { 1904 int userId = ((UserInfo) msg.obj).id; 1905 UserInfo userInfo = mUsers.get(userId); 1906 if (userInfo != null) { 1907 writeUserLocked(userInfo); 1908 } 1909 } 1910 } 1911 } 1912 } 1913} 1914