cb0f9bbc85
One of the major aspects of treble is the compartmentalization of system and vendor components, however init leaves a huge gap here, as vendor init scripts run in the same context as system init scripts and thus can access and modify the same properties, files, etc as the system can. This change is meant to close that gap. It forks a separate 'subcontext' init that runs in a different SELinux context with permissions that match what vendors should have access to. Commands get sent over a socket to this 'subcontext' init that then runs them in this SELinux context and returns the result. Note that not all commands run in the subcontext; some commands such as those dealing with services only make sense in the context of the main init process. Bug: 62875318 Test: init unit tests, boot bullhead, boot sailfish Change-Id: Idf4a4ebf98842d27b8627f901f961ab9eb412aee
57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
/*
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* Copyright (C) 2017 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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#include "subcontext.h"
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#include <benchmark/benchmark.h>
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#include "test_function_map.h"
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namespace android {
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namespace init {
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static void BenchmarkSuccess(benchmark::State& state) {
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auto subcontext = Subcontext("path", kVendorContext);
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auto subcontext_killer = SubcontextKiller(subcontext);
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while (state.KeepRunning()) {
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subcontext.Execute(std::vector<std::string>{"return_success"});
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}
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}
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BENCHMARK(BenchmarkSuccess);
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TestFunctionMap BuildTestFunctionMap() {
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TestFunctionMap test_function_map;
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test_function_map.Add("return_success", 0, 0, true,
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[](const BuiltinArguments& args) { return Success(); });
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return test_function_map;
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}
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} // namespace init
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} // namespace android
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int main(int argc, char** argv) {
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if (argc > 1 && !strcmp(basename(argv[1]), "subcontext")) {
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auto test_function_map = android::init::BuildTestFunctionMap();
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return android::init::SubcontextMain(argc, argv, &test_function_map);
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}
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::benchmark::Initialize(&argc, argv);
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if (::benchmark::ReportUnrecognizedArguments(argc, argv)) return 1;
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::benchmark::RunSpecifiedBenchmarks();
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}
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