1 /* 2 * Copyright (C) 2018 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.example.android.systemupdatersample.util; 18 19 /** Utility class for an OTA package. */ 20 public final class PackageFiles { 21 22 /** 23 * Directory used to perform updates. 24 */ 25 public static final String OTA_PACKAGE_DIR = "/data/ota_package"; 26 27 /** 28 * update payload, it will be passed to {@code UpdateEngine#applyPayload}. 29 */ 30 public static final String PAYLOAD_BINARY_FILE_NAME = "payload.bin"; 31 32 /** 33 * Currently, when calling {@code UpdateEngine#applyPayload} to perform actions 34 * that don't require network access (e.g. change slot), update_engine still 35 * talks to the server to download/verify file. 36 * {@code update_engine} might throw error when rebooting if {@code UpdateEngine#applyPayload} 37 * is not supplied right headers and tokens. 38 * This behavior might change in future android versions. 39 * 40 * To avoid extra network request in {@code update_engine}, this file has to be 41 * downloaded and put in {@code OTA_PACKAGE_DIR}. 42 */ 43 public static final String PAYLOAD_METADATA_FILE_NAME = "payload_metadata.bin"; 44 45 public static final String PAYLOAD_PROPERTIES_FILE_NAME = "payload_properties.txt"; 46 47 /** The zip entry in an A/B OTA package, which will be used by update_verifier. */ 48 public static final String CARE_MAP_FILE_NAME = "care_map.txt"; 49 50 public static final String METADATA_FILE_NAME = "metadata"; 51 52 /** 53 * The zip file that claims the compatibility of the update package to check against the Android 54 * framework to ensure that the package can be installed on the device. 55 */ 56 public static final String COMPATIBILITY_ZIP_FILE_NAME = "compatibility.zip"; 57 PackageFiles()58 private PackageFiles() {} 59 } 60