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Colin Cross3899e9f2010-04-13 20:35:46 -07001/*
2 * Copyright (C) 2010 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_UTIL_H_
18#define _INIT_UTIL_H_
19
Colin Crossf83d0b92010-04-21 12:04:20 -070020#include <sys/stat.h>
21#include <sys/types.h>
22
Elliott Hughes9605a942016-11-10 17:43:47 -080023#include <chrono>
Nick Kralevichf667a322015-04-25 17:42:52 -070024#include <functional>
Elliott Hughes331cf2f2016-11-29 19:20:58 +000025#include <ostream>
26#include <string>
Elliott Hughesf682b472015-02-06 12:19:48 -080027
James Hawkinse78ea772017-03-24 11:43:02 -070028#include <android-base/chrono_utils.h>
Tom Cherrye7656b72017-05-01 17:10:09 -070029#include <selinux/label.h>
James Hawkinse78ea772017-03-24 11:43:02 -070030
Tom Cherry11a3aee2017-08-03 12:54:07 -070031#include "result.h"
32
Andreas Gampea016c422014-11-24 19:52:41 -080033#define COLDBOOT_DONE "/dev/.coldboot_done"
Colin Crossf83d0b92010-04-21 12:04:20 -070034
James Hawkinse78ea772017-03-24 11:43:02 -070035using android::base::boot_clock;
Elliott Hughes9605a942016-11-10 17:43:47 -080036using namespace std::chrono_literals;
37
Tom Cherry81f5d3e2017-06-22 12:53:17 -070038namespace android {
39namespace init {
40
Mark Salyzynb066fcc2017-05-05 14:44:35 -070041int CreateSocket(const char* name, int type, bool passcred, mode_t perm, uid_t uid, gid_t gid,
Tom Cherry0c8d6d22017-08-10 12:22:44 -070042 const char* socketcon);
Elliott Hughesf682b472015-02-06 12:19:48 -080043
Tom Cherry11a3aee2017-08-03 12:54:07 -070044Result<std::string> ReadFile(const std::string& path);
45Result<Success> WriteFile(const std::string& path, const std::string& content);
Elliott Hughesf682b472015-02-06 12:19:48 -080046
Tom Cherry11a3aee2017-08-03 12:54:07 -070047Result<uid_t> DecodeUid(const std::string& name);
Colin Cross3899e9f2010-04-13 20:35:46 -070048
Tom Cherry0c8d6d22017-08-10 12:22:44 -070049bool mkdir_recursive(const std::string& pathname, mode_t mode);
Elliott Hughes9605a942016-11-10 17:43:47 -080050int wait_for_file(const char *filename, std::chrono::nanoseconds timeout);
Elliott Hughese5ce30f2015-05-06 19:19:24 -070051void import_kernel_cmdline(bool in_qemu,
Chih-Hung Hsieh8f7b9e32016-07-27 16:25:51 -070052 const std::function<void(const std::string&, const std::string&, bool)>&);
Tom Cherry0c8d6d22017-08-10 12:22:44 -070053bool make_dir(const std::string& path, mode_t mode);
Andres Moralesdb5f5d42015-05-08 08:30:33 -070054std::string bytes_to_hex(const uint8_t *bytes, size_t bytes_len);
Lee Campbellf13b1b32015-07-24 16:57:14 -070055bool is_dir(const char* pathname);
Tom Cherryb7349902015-08-26 11:43:36 -070056bool expand_props(const std::string& src, std::string* dst);
Elliott Hughes331cf2f2016-11-29 19:20:58 +000057
Yu Ningc01022a2017-07-26 17:54:08 +080058// Returns the platform's Android DT directory as specified in the kernel cmdline.
59// If the platform does not configure a custom DT path, returns the standard one (based in procfs).
60const std::string& get_android_dt_dir();
61// Reads or compares the content of device tree file under the platform's Android DT directory.
Bowgo Tsaid2620172017-04-17 22:17:09 +080062bool read_android_dt_file(const std::string& sub_path, std::string* dt_content);
63bool is_android_dt_value_expected(const std::string& sub_path, const std::string& expected_content);
64
Tom Cherryde6bd502018-02-13 16:50:08 -080065bool IsLegalPropertyName(const std::string& name);
66
Tom Cherry81f5d3e2017-06-22 12:53:17 -070067} // namespace init
68} // namespace android
69
Colin Cross3899e9f2010-04-13 20:35:46 -070070#endif