1 /* 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 20 #include <sys/stat.h> 21 #include <sys/types.h> 22 23 #include <chrono> 24 #include <functional> 25 #include <ostream> 26 #include <string> 27 28 #include <android-base/chrono_utils.h> 29 #include <selinux/label.h> 30 31 #include "result.h" 32 33 #define COLDBOOT_DONE "/dev/.coldboot_done" 34 35 using android::base::boot_clock; 36 using namespace std::chrono_literals; 37 38 namespace android { 39 namespace init { 40 41 int CreateSocket(const char* name, int type, bool passcred, mode_t perm, uid_t uid, gid_t gid, 42 const char* socketcon); 43 44 Result<std::string> ReadFile(const std::string& path); 45 Result<Success> WriteFile(const std::string& path, const std::string& content); 46 47 Result<uid_t> DecodeUid(const std::string& name); 48 49 bool mkdir_recursive(const std::string& pathname, mode_t mode); 50 int wait_for_file(const char *filename, std::chrono::nanoseconds timeout); 51 void import_kernel_cmdline(bool in_qemu, 52 const std::function<void(const std::string&, const std::string&, bool)>&); 53 bool make_dir(const std::string& path, mode_t mode); 54 bool is_dir(const char* pathname); 55 bool expand_props(const std::string& src, std::string* dst); 56 57 // Returns the platform's Android DT directory as specified in the kernel cmdline. 58 // If the platform does not configure a custom DT path, returns the standard one (based in procfs). 59 const std::string& get_android_dt_dir(); 60 // Reads or compares the content of device tree file under the platform's Android DT directory. 61 bool read_android_dt_file(const std::string& sub_path, std::string* dt_content); 62 bool is_android_dt_value_expected(const std::string& sub_path, const std::string& expected_content); 63 64 bool IsLegalPropertyName(const std::string& name); 65 66 void SetStdioToDevNull(char** argv); 67 void InitKernelLogging(char** argv); 68 bool IsRecoveryMode(); 69 } // namespace init 70 } // namespace android 71 72 #endif 73