1 // 2 // Copyright (C) 2020 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 #ifndef UPDATE_ENGINE_PAYLOAD_CONSUMER_PARTITION_UPDATE_GENERATOR_ANDROID_H_ 18 #define UPDATE_ENGINE_PAYLOAD_CONSUMER_PARTITION_UPDATE_GENERATOR_ANDROID_H_ 19 20 #include <optional> 21 #include <set> 22 #include <string> 23 #include <vector> 24 25 #include <brillo/secure_blob.h> 26 #include <gtest/gtest_prod.h> // for FRIEND_TEST 27 28 #include "update_engine/common/boot_control_interface.h" 29 #include "update_engine/payload_consumer/partition_update_generator_interface.h" 30 31 namespace chromeos_update_engine { 32 class PartitionUpdateGeneratorAndroid 33 : public PartitionUpdateGeneratorInterface { 34 public: 35 PartitionUpdateGeneratorAndroid(BootControlInterface* boot_control, 36 std::string device_dir, 37 size_t block_size); 38 39 bool GenerateOperationsForPartitionsNotInPayload( 40 BootControlInterface::Slot source_slot, 41 BootControlInterface::Slot target_slot, 42 const std::set<std::string>& partitions_in_payload, 43 std::vector<PartitionUpdate>* update_list) override; 44 45 private: 46 friend class PartitionUpdateGeneratorAndroidTest; 47 FRIEND_TEST(PartitionUpdateGeneratorAndroidTest, GetStaticPartitions); 48 FRIEND_TEST(PartitionUpdateGeneratorAndroidTest, CreatePartitionUpdate); 49 50 // Gets the name of the static a/b partitions on the device. 51 std::optional<std::set<std::string>> GetStaticAbPartitionsOnDevice(); 52 53 // Creates a PartitionUpdate object for a given partition to update from 54 // source to target. Returns std::nullopt on failure. 55 std::optional<PartitionUpdate> CreatePartitionUpdate( 56 const std::string& partition_name, 57 const std::string& source_device, 58 const std::string& target_device, 59 int64_t partition_size); 60 61 std::optional<PartitionUpdate> CreatePartitionUpdate( 62 const std::string& partition_name, 63 BootControlInterface::Slot source_slot, 64 BootControlInterface::Slot target_slot); 65 66 std::optional<brillo::Blob> CalculateHashForPartition( 67 const std::string& block_device, int64_t partition_size); 68 69 BootControlInterface* boot_control_; 70 // Path to look for a/b partitions 71 std::string block_device_dir_; 72 size_t block_size_; 73 }; 74 75 } // namespace chromeos_update_engine 76 77 #endif 78