1 /* 2 * Copyright (C) 2021 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.devicepolicy; 18 19 import static com.android.server.devicepolicy.DevicePolicyManagerService.LOG_TAG; 20 21 import android.content.pm.IPackageDeleteObserver; 22 import android.content.pm.PackageManager; 23 import android.util.Log; 24 import android.util.Slog; 25 26 import java.util.concurrent.CountDownLatch; 27 import java.util.concurrent.TimeUnit; 28 import java.util.concurrent.atomic.AtomicInteger; 29 30 /** 31 * Awaits the deletion of all the non-required apps. 32 */ 33 final class NonRequiredPackageDeleteObserver extends IPackageDeleteObserver.Stub { 34 private static final int PACKAGE_DELETE_TIMEOUT_SEC = 30; 35 36 private final AtomicInteger mPackageCount = new AtomicInteger(/* initialValue= */ 0); 37 private final CountDownLatch mLatch; 38 private boolean mSuccess; 39 NonRequiredPackageDeleteObserver(int packageCount)40 NonRequiredPackageDeleteObserver(int packageCount) { 41 this.mLatch = new CountDownLatch(packageCount); 42 this.mPackageCount.set(packageCount); 43 } 44 45 @Override packageDeleted(String packageName, int returnCode)46 public void packageDeleted(String packageName, int returnCode) { 47 if (returnCode != PackageManager.DELETE_SUCCEEDED) { 48 Slog.e(LOG_TAG, "Failed to delete package: " + packageName); 49 mLatch.notifyAll(); 50 return; 51 } 52 int currentPackageCount = mPackageCount.decrementAndGet(); 53 if (currentPackageCount == 0) { 54 mSuccess = true; 55 Slog.i(LOG_TAG, "All non-required system apps with launcher icon, " 56 + "and all disallowed apps have been uninstalled."); 57 } 58 mLatch.countDown(); 59 } 60 awaitPackagesDeletion()61 public boolean awaitPackagesDeletion() { 62 try { 63 mLatch.await(PACKAGE_DELETE_TIMEOUT_SEC, TimeUnit.SECONDS); 64 } catch (InterruptedException e) { 65 Log.w(LOG_TAG, "Interrupted while waiting for package deletion", e); 66 Thread.currentThread().interrupt(); 67 } 68 return mSuccess; 69 } 70 } 71