| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "apexd" |
| |
| #include "apexd_prop.h" |
| |
| #include <android-base/logging.h> |
| #include <android-base/properties.h> |
| |
| #include "apexd_utils.h" |
| |
| namespace android { |
| namespace apex { |
| void waitForBootStatus(Status (&rollback_fn)(), void (&complete_fn)()) { |
| while (true) { |
| // Check for change in either crashing property or sys.boot_completed |
| // Wait for updatable_crashing property change for most of the time |
| // (arbitrary 30s), briefly check if boot has completed successfully, |
| // if not continue waiting for updatable_crashing. |
| // We use this strategy so that we can quickly detect if an updatable |
| // process is crashing. |
| if (android::base::WaitForProperty("ro.init.updatable_crashing", "1", |
| std::chrono::seconds(30))) { |
| LOG(INFO) << "Updatable crashing, attempting rollback"; |
| auto status = rollback_fn(); |
| if (!status.Ok()) { |
| LOG(ERROR) << "Rollback failed : " << status.ErrorMessage(); |
| } else { |
| LOG(INFO) << "Successfuly rolled back. Rebooting device"; |
| Reboot(); |
| } |
| return; |
| } |
| if (android::base::GetProperty("sys.boot_completed", "") == "1") { |
| // Boot completed we can return |
| complete_fn(); |
| return; |
| } |
| } |
| } |
| } // namespace apex |
| } // namespace android |