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Tom Cherrycb0f9bb2017-09-12 15:58:47 -07001/*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef _INIT_SUBCONTEXT_H
18#define _INIT_SUBCONTEXT_H
19
20#include <signal.h>
21
22#include <string>
23#include <vector>
24
25#include <android-base/unique_fd.h>
26
27#include "builtins.h"
Tom Cherry618d3102018-01-19 14:25:48 -080028#include "result.h"
Tom Cherryc49719f2018-01-10 11:04:34 -080029#include "system/core/init/subcontext.pb.h"
Tom Cherrycb0f9bb2017-09-12 15:58:47 -070030
31namespace android {
32namespace init {
33
34extern const std::string kInitContext;
35extern const std::string kVendorContext;
Tom Cherrydc375862018-02-28 10:39:01 -080036extern const char* const paths_and_secontexts[2][2];
Tom Cherrycb0f9bb2017-09-12 15:58:47 -070037
38class Subcontext {
39 public:
40 Subcontext(std::string path_prefix, std::string context)
Tom Cherrye6d37cd2017-10-19 14:15:37 -070041 : path_prefix_(std::move(path_prefix)), context_(std::move(context)), pid_(0) {
Tom Cherrycb0f9bb2017-09-12 15:58:47 -070042 Fork();
43 }
44
Tom Cherryc49719f2018-01-10 11:04:34 -080045 Result<Success> Execute(const std::vector<std::string>& args);
46 Result<std::vector<std::string>> ExpandArgs(const std::vector<std::string>& args);
Tom Cherrycb0f9bb2017-09-12 15:58:47 -070047 void Restart();
48
49 const std::string& path_prefix() const { return path_prefix_; }
50 const std::string& context() const { return context_; }
51 pid_t pid() const { return pid_; }
52
53 private:
54 void Fork();
Tom Cherryc49719f2018-01-10 11:04:34 -080055 Result<SubcontextReply> TransmitMessage(const SubcontextCommand& subcontext_command);
Tom Cherrycb0f9bb2017-09-12 15:58:47 -070056
57 std::string path_prefix_;
58 std::string context_;
59 pid_t pid_;
60 android::base::unique_fd socket_;
61};
62
Tom Cherrycb0f9bb2017-09-12 15:58:47 -070063int SubcontextMain(int argc, char** argv, const KeywordFunctionMap* function_map);
64std::vector<Subcontext>* InitializeSubcontexts();
65bool SubcontextChildReap(pid_t pid);
Luis Hector Chavez92c49bc2018-07-27 11:19:25 -070066void SubcontextTerminate();
Tom Cherrycb0f9bb2017-09-12 15:58:47 -070067
68} // namespace init
69} // namespace android
70
71#endif