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/*
* Copyright (C) 2017 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.
*/
#pragma once
#include <signal.h>
#include <string>
#include <vector>
#include <android-base/unique_fd.h>
#include "builtins.h"
#include "result.h"
#include "system/core/init/subcontext.pb.h"
namespace android {
namespace init {
static constexpr const char kInitContext[] = "u:r:init:s0";
static constexpr const char kVendorContext[] = "u:r:vendor_init:s0";
static constexpr const char kTestContext[] = "test-test-test";
class Subcontext {
public:
Subcontext(std::vector<std::string> path_prefixes, std::string context)
: path_prefixes_(std::move(path_prefixes)), context_(std::move(context)), pid_(0) {
Fork();
}
Result<void> Execute(const std::vector<std::string>& args);
Result<std::vector<std::string>> ExpandArgs(const std::vector<std::string>& args);
void Restart();
bool PathMatchesSubcontext(const std::string& path);
const std::string& context() const { return context_; }
pid_t pid() const { return pid_; }
private:
void Fork();
Result<SubcontextReply> TransmitMessage(const SubcontextCommand& subcontext_command);
std::vector<std::string> path_prefixes_;
std::string context_;
pid_t pid_;
android::base::unique_fd socket_;
};
int SubcontextMain(int argc, char** argv, const BuiltinFunctionMap* function_map);
void InitializeSubcontext();
Subcontext* GetSubcontext();
bool SubcontextChildReap(pid_t pid);
void SubcontextTerminate();
} // namespace init
} // namespace android
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