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73 lines
2.5 KiB
73 lines
2.5 KiB
4 months ago
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/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "apexd"
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#include "apexd_lifecycle.h"
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#include <android-base/logging.h>
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#include <android-base/properties.h>
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#include "apexd_utils.h"
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using android::base::GetProperty;
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using android::base::Result;
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using android::base::WaitForProperty;
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namespace android {
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namespace apex {
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bool ApexdLifecycle::IsBooting() {
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auto status = GetProperty(kApexStatusSysprop, "");
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return status != kApexStatusReady && status != kApexStatusActivated;
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}
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void ApexdLifecycle::WaitForBootStatus(
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Result<void> (&revert_fn)(const std::string&, const std::string&)) {
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while (!boot_completed_) {
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// Check for change in either crashing property or sys.boot_completed
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// Wait for updatable_crashing property change for most of the time
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// (arbitrary 30s), briefly check if boot has completed successfully,
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// if not continue waiting for updatable_crashing.
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// We use this strategy so that we can quickly detect if an updatable
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// process is crashing.
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if (WaitForProperty("sys.init.updatable_crashing", "1",
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std::chrono::seconds(30))) {
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auto name = GetProperty("sys.init.updatable_crashing_process_name", "");
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LOG(ERROR) << "Native process '" << (name.empty() ? "[unknown]" : name)
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<< "' is crashing. Attempting a revert";
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auto result = revert_fn(name, "");
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if (!result.ok()) {
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LOG(ERROR) << "Revert failed : " << result.error();
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break;
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} else {
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// This should never be reached, since revert_fn should've rebooted a
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// device. But if for some reason we end up here, let's reboot it
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// manually.
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LOG(ERROR) << "Active sessions were reverted, but reboot wasn't "
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"triggered. Rebooting manually";
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Reboot();
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return;
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}
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}
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}
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}
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void ApexdLifecycle::MarkBootCompleted() { boot_completed_ = true; }
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} // namespace apex
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} // namespace android
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