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