56 lines
2.0 KiB
C++
56 lines
2.0 KiB
C++
/*
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* Copyright (C) 2023 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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// This binary is run on boot as a oneshot service. It should not be run at any
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// other point.
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#include <string>
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#include "android-base/logging.h"
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#include "android-base/properties.h"
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// Copies the value of one system property to another if it isn't empty and
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// passes the predicate test_fn.
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static void CopyPropertyIf(const char* src, const char* dst, bool (*test_fn)(const std::string&)) {
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std::string prop = android::base::GetProperty(src, "");
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if (prop.empty()) {
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LOG(INFO) << "Property " << src << " not set";
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} else if (!test_fn(prop)) {
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LOG(INFO) << "Property " << src << " has ignored value " << prop;
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} else {
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if (android::base::SetProperty(dst, prop)) {
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LOG(INFO) << "Set property " << dst << " to " << prop << " from " << src;
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} else {
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LOG(ERROR) << "Failed to set property " << dst << " to " << prop;
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}
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}
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}
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int main(int, char** argv) {
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android::base::InitLogging(argv);
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// Copy properties that must only be set at boot and not change value later.
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// Note that P/H can change the properties in the experiment namespaces at any
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// time.
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CopyPropertyIf("persist.device_config.runtime_native_boot.useartservice",
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"dalvik.vm.useartservice",
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// If an OEM has set dalvik.vm.useartservice to false we
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// shouldn't override it to true from the P/H property.
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[](const std::string& prop) { return prop == "false"; });
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return 0;
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}
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