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.car.internal.os; 18 19 import android.annotation.Nullable; 20 import android.os.SystemProperties; 21 22 import java.util.Optional; 23 24 /** 25 * Replacement for {@code android.sysprop.CarProperties}. This should be manually updated. 26 * 27 * @hide 28 */ 29 public final class CarSystemProperties { 30 private static final String PROP_BOOT_USER_OVERRIDE_ID = 31 "android.car.systemuser.bootuseroverrideid"; 32 private static final String PROP_NUMBER_PRE_CREATED_USERS = 33 "android.car.number_pre_created_users"; 34 private static final String PROP_NUMBER_PRE_CREATED_GUESTS = 35 "android.car.number_pre_created_guests"; 36 private static final String PROP_USER_HAL_ENABLED = "android.car.user_hal_enabled"; 37 private static final String PROP_USER_HAL_TIMEOUT = "android.car.user_hal_timeout"; 38 private static final String PROP_DEVICE_POLICY_MANAGER_TIMEOUT = 39 "android.car.device_policy_manager_timeout"; 40 CarSystemProperties()41 private CarSystemProperties() { 42 throw new UnsupportedOperationException(); 43 } 44 45 /** Check {@code system/libsysprop/srcs/android/sysprop/CarProperties.sysprop} */ getBootUserOverrideId()46 public static Optional<Integer> getBootUserOverrideId() { 47 return Optional.ofNullable(tryParseInteger(SystemProperties.get( 48 PROP_BOOT_USER_OVERRIDE_ID))); 49 } 50 51 /** Check {@code system/libsysprop/srcs/android/sysprop/CarProperties.sysprop} */ getNumberPreCreatedUsers()52 public static Optional<Integer> getNumberPreCreatedUsers() { 53 return Optional.ofNullable(tryParseInteger(SystemProperties.get( 54 PROP_NUMBER_PRE_CREATED_USERS))); 55 } 56 57 /** Check {@code system/libsysprop/srcs/android/sysprop/CarProperties.sysprop} */ getNumberPreCreatedGuests()58 public static Optional<Integer> getNumberPreCreatedGuests() { 59 return Optional.ofNullable(tryParseInteger(SystemProperties.get( 60 PROP_NUMBER_PRE_CREATED_GUESTS))); 61 } 62 63 64 /** Check {@code system/libsysprop/srcs/android/sysprop/CarProperties.sysprop} */ getUserHalEnabled()65 public static Optional<Boolean> getUserHalEnabled() { 66 return Optional.ofNullable(Boolean.valueOf(SystemProperties.get(PROP_USER_HAL_ENABLED))); 67 } 68 69 /** Check {@code system/libsysprop/srcs/android/sysprop/CarProperties.sysprop} */ getUserHalTimeout()70 public static Optional<Integer> getUserHalTimeout() { 71 return Optional.ofNullable(tryParseInteger(SystemProperties.get(PROP_USER_HAL_TIMEOUT))); 72 } 73 74 /** Check {@code system/libsysprop/srcs/android/sysprop/CarProperties.sysprop} */ getDevicePolicyManagerTimeout()75 public static Optional<Integer> getDevicePolicyManagerTimeout() { 76 return Optional.ofNullable(tryParseInteger(SystemProperties.get( 77 PROP_DEVICE_POLICY_MANAGER_TIMEOUT))); 78 } 79 80 @Nullable tryParseInteger(String str)81 private static Integer tryParseInteger(String str) { 82 try { 83 return Integer.valueOf(str); 84 } catch (NumberFormatException e) { 85 return null; 86 } 87 } 88 } 89