Merge "Only update cache for new user on user create" into sc-dev am: 5184f16db7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14922862

Change-Id: Ide48cfde406590dbe1ba066fca8874a910a78960

services/core/java/com/android/server/pm/AppsFilter.java

@@ -17,6 +17,7 @@
 package com.android.server.pm;
 
 import static android.os.Trace.TRACE_TAG_PACKAGE_MANAGER;
+import static android.os.UserHandle.USER_ALL;
 import static android.provider.DeviceConfig.NAMESPACE_PACKAGE_MANAGER_SERVICE;
 
 import static com.android.internal.annotations.VisibleForTesting.Visibility.PRIVATE;
@@ -685,7 +686,7 @@ public class AppsFilter implements Watchable, Snappable {
                 synchronized (mCacheLock) {
                     if (mShouldFilterCache != null) {
                         updateShouldFilterCacheForPackage(mShouldFilterCache, null, newPkgSetting,
-                                settings, users, settings.size());
+                                settings, users, USER_ALL, settings.size());
                         if (additionalChangedPackages != null) {
                             for (int index = 0; index < additionalChangedPackages.size(); index++) {
                                 String changedPackage = additionalChangedPackages.valueAt(index);
@@ -698,7 +699,8 @@ public class AppsFilter implements Watchable, Snappable {
                                 }
 
                                 updateShouldFilterCacheForPackage(mShouldFilterCache, null,
-                                        changedPkgSetting, settings, users, settings.size());
+                                        changedPkgSetting, settings, users, USER_ALL,
+                                        settings.size());
                             }
                         }
                     } // else, rebuild entire cache when system is ready
@@ -830,24 +832,51 @@ public class AppsFilter implements Watchable, Snappable {
             }
         }
     }
-
     private void updateEntireShouldFilterCache() {
+        updateEntireShouldFilterCache(USER_ALL);
+    }
+
+    private void updateEntireShouldFilterCache(int subjectUserId) {
         mStateProvider.runWithState((settings, users) -> {
+            int userId = subjectUserId;
+            if (!ArrayUtils.contains(users, subjectUserId)) {
+                Slog.e(TAG, "We encountered a new user that isn't a member of known users, "
+                        + "updating the whole cache");
+                userId = USER_ALL;
+            }
             WatchedSparseBooleanMatrix cache =
-                    updateEntireShouldFilterCacheInner(settings, users);
+                    updateEntireShouldFilterCacheInner(settings, users, userId);
             synchronized (mCacheLock) {
+                if (userId != USER_ALL) {
+                    // if we're only updating a single user id, we need to copy over the prior
+                    // cached values for the other users.
+                    int[] uids = mShouldFilterCache.keys();
+                    for (int i = 0; i < uids.length; i++) {
+                        int uid1 = uids[i];
+                        if (UserHandle.getUserId(uid1) == userId) {
+                            continue;
+                        }
+                        for (int j = 0; j < uids.length; j++) {
+                            int uid2 = uids[j];
+                            if (UserHandle.getUserId(uid2) == userId) {
+                                continue;
+                            }
+                            cache.setValueAt(uid1, uid2, mShouldFilterCache.valueAt(uid1, uid2));
+                        }
+                    }
+                }
                 mShouldFilterCache = cache;
             }
         });
     }
 
     private WatchedSparseBooleanMatrix updateEntireShouldFilterCacheInner(
-            ArrayMap<String, PackageSetting> settings, UserInfo[] users) {
+            ArrayMap<String, PackageSetting> settings, UserInfo[] users, int subjectUserId) {
         WatchedSparseBooleanMatrix cache =
                 new WatchedSparseBooleanMatrix(users.length * settings.size());
         for (int i = settings.size() - 1; i >= 0; i--) {
             updateShouldFilterCacheForPackage(cache,
-                    null /*skipPackage*/, settings.valueAt(i), settings, users, i);
+                    null /*skipPackage*/, settings.valueAt(i), settings, users, subjectUserId, i);
         }
         return cache;
     }
@@ -868,8 +897,8 @@ public class AppsFilter implements Watchable, Snappable {
                     packagesCache.put(settings.keyAt(i), pkg);
                 }
             });
-            WatchedSparseBooleanMatrix cache =
+            WatchedSparseBooleanMatrix cache = updateEntireShouldFilterCacheInner(
-                    updateEntireShouldFilterCacheInner(settingsCopy, usersRef[0]);
+                    settingsCopy, usersRef[0], USER_ALL);
             boolean[] changed = new boolean[1];
             // We have a cache, let's make sure the world hasn't changed out from under us.
             mStateProvider.runWithState((settings, users) -> {
@@ -899,10 +928,10 @@ public class AppsFilter implements Watchable, Snappable {
         });
     }
 
-    public void onUsersChanged() {
+    public void onUserCreated(int newUserId) {
         synchronized (mCacheLock) {
             if (mShouldFilterCache != null) {
-                updateEntireShouldFilterCache();
+                updateEntireShouldFilterCache(newUserId);
                 onChanged();
             }
         }
@@ -913,7 +942,7 @@ public class AppsFilter implements Watchable, Snappable {
             if (mShouldFilterCache != null) {
                 mStateProvider.runWithState((settings, users) -> {
                     updateShouldFilterCacheForPackage(mShouldFilterCache, null /* skipPackage */,
-                            settings.get(packageName), settings, users,
+                            settings.get(packageName), settings, users, USER_ALL,
                             settings.size() /*maxIndex*/);
                 });
             }
@@ -922,7 +951,7 @@ public class AppsFilter implements Watchable, Snappable {
 
     private void updateShouldFilterCacheForPackage(WatchedSparseBooleanMatrix cache,
             @Nullable String skipPackageName, PackageSetting subjectSetting, ArrayMap<String,
-            PackageSetting> allSettings, UserInfo[] allUsers, int maxIndex) {
+            PackageSetting> allSettings, UserInfo[] allUsers, int subjectUserId, int maxIndex) {
         for (int i = Math.min(maxIndex, allSettings.size() - 1); i >= 0; i--) {
             PackageSetting otherSetting = allSettings.valueAt(i);
             if (subjectSetting.appId == otherSetting.appId) {
@@ -932,22 +961,31 @@ public class AppsFilter implements Watchable, Snappable {
             if (subjectSetting.name == skipPackageName || otherSetting.name == skipPackageName) {
                 continue;
             }
-            final int userCount = allUsers.length;
+            if (subjectUserId == USER_ALL) {
-            final int appxUidCount = userCount * allSettings.size();
+                for (int su = 0; su < allUsers.length; su++) {
-            for (int su = 0; su < userCount; su++) {
+                    updateShouldFilterCacheForUser(cache, subjectSetting, allUsers, otherSetting,
-                int subjectUser = allUsers[su].id;
+                            allUsers[su].id);
-                for (int ou = 0; ou < userCount; ou++) {
+                }
+            } else {
+                updateShouldFilterCacheForUser(cache, subjectSetting, allUsers, otherSetting,
+                        subjectUserId);
+            }
+        }
+    }
+
+    private void updateShouldFilterCacheForUser(WatchedSparseBooleanMatrix cache,
+            PackageSetting subjectSetting, UserInfo[] allUsers, PackageSetting otherSetting,
+            int subjectUserId) {
+        for (int ou = 0; ou < allUsers.length; ou++) {
             int otherUser = allUsers[ou].id;
-                    int subjectUid = UserHandle.getUid(subjectUser, subjectSetting.appId);
+            int subjectUid = UserHandle.getUid(subjectUserId, subjectSetting.appId);
             int otherUid = UserHandle.getUid(otherUser, otherSetting.appId);
             cache.put(subjectUid, otherUid,
                     shouldFilterApplicationInternal(
                             subjectUid, subjectSetting, otherSetting, otherUser));
             cache.put(otherUid, subjectUid,
                     shouldFilterApplicationInternal(
-                                    otherUid, otherSetting, subjectSetting, subjectUser));
+                            otherUid, otherSetting, subjectSetting, subjectUserId));
-                }
-            }
         }
     }
 
@@ -1145,7 +1183,7 @@ public class AppsFilter implements Watchable, Snappable {
                             continue;
                         }
                         updateShouldFilterCacheForPackage(mShouldFilterCache, setting.name,
-                                siblingSetting, settings, users, settings.size());
+                                siblingSetting, settings, users, USER_ALL, settings.size());
                     }
                 }
 
@@ -1162,7 +1200,7 @@ public class AppsFilter implements Watchable, Snappable {
                             }
 
                             updateShouldFilterCacheForPackage(mShouldFilterCache, null,
-                                    changedPkgSetting, settings, users, settings.size());
+                                    changedPkgSetting, settings, users, USER_ALL, settings.size());
                         }
                     }
                 }

services/core/java/com/android/server/pm/PackageManagerService.java

@@ -26366,7 +26366,7 @@ public class PackageManagerService extends IPackageManager.Stub
         synchronized (mLock) {
             scheduleWritePackageRestrictionsLocked(userId);
             scheduleWritePackageListLocked(userId);
-            mAppsFilter.onUsersChanged();
+            mAppsFilter.onUserCreated(userId);
         }
     }
 

services/tests/servicestests/src/com/android/server/pm/AppsFilterTest.java

@@ -83,9 +83,17 @@ public class AppsFilterTest {
     private static final int DUMMY_OVERLAY_APPID = 10756;
     private static final int SYSTEM_USER = 0;
     private static final int SECONDARY_USER = 10;
+    private static final int ADDED_USER = 11;
     private static final int[] USER_ARRAY = {SYSTEM_USER, SECONDARY_USER};
-    private static final UserInfo[] USER_INFO_LIST = Arrays.stream(USER_ARRAY).mapToObj(
+    private static final int[] USER_ARRAY_WITH_ADDED = {SYSTEM_USER, SECONDARY_USER, ADDED_USER};
-            id -> new UserInfo(id, Integer.toString(id), 0)).toArray(UserInfo[]::new);
+    private static final UserInfo[] USER_INFO_LIST = toUserInfos(USER_ARRAY);
+    private static final UserInfo[] USER_INFO_LIST_WITH_ADDED = toUserInfos(USER_ARRAY_WITH_ADDED);
+
+    private static UserInfo[] toUserInfos(int[] userIds) {
+        return Arrays.stream(userIds)
+                .mapToObj(id -> new UserInfo(id, Integer.toString(id), 0))
+                .toArray(UserInfo[]::new);
+    }
 
     @Mock
     AppsFilter.FeatureConfig mFeatureConfigMock;
@@ -318,6 +326,47 @@ public class AppsFilterTest {
         watcher.verifyNoChangeReported("shouldFilterApplication");
     }
 
+    @Test
+    public void testOnUserCreated_FilterMatches() throws Exception {
+        final AppsFilter appsFilter =
+                new AppsFilter(mStateProvider, mFeatureConfigMock, new String[]{}, false, null,
+                        mMockExecutor);
+        simulateAddBasicAndroid(appsFilter);
+
+        appsFilter.onSystemReady();
+
+        PackageSetting target = simulateAddPackage(appsFilter,
+                pkgWithProvider("com.some.package", "com.some.authority"), DUMMY_TARGET_APPID);
+        PackageSetting calling = simulateAddPackage(appsFilter,
+                pkgQueriesProvider("com.some.other.package", "com.some.authority"),
+                DUMMY_CALLING_APPID);
+
+        for (int subjectUserId : USER_ARRAY) {
+            for (int otherUserId : USER_ARRAY) {
+                assertFalse(appsFilter.shouldFilterApplication(
+                        UserHandle.getUid(DUMMY_CALLING_APPID, subjectUserId), calling, target,
+                        otherUserId));
+            }
+        }
+
+        // adds new user
+        doAnswer(invocation -> {
+            ((AppsFilter.StateProvider.CurrentStateCallback) invocation.getArgument(0))
+                    .currentState(mExisting, USER_INFO_LIST_WITH_ADDED);
+            return new Object();
+        }).when(mStateProvider)
+                .runWithState(any(AppsFilter.StateProvider.CurrentStateCallback.class));
+        appsFilter.onUserCreated(ADDED_USER);
+
+        for (int subjectUserId : USER_ARRAY_WITH_ADDED) {
+            for (int otherUserId : USER_ARRAY_WITH_ADDED) {
+                assertFalse(appsFilter.shouldFilterApplication(
+                        UserHandle.getUid(DUMMY_CALLING_APPID, subjectUserId), calling, target,
+                        otherUserId));
+            }
+        }
+    }
+
     @Test
     public void testQueriesDifferentProvider_Filters() throws Exception {
         final AppsFilter appsFilter =