e7656b7200
Init exposes a global 'sehandle' that ueventd references as part of devices.cpp and util.cpp. This is particularly dangerous in device_init() in which both uevent and init write to this global. This change creates a separate local copy for devices.cpp and puts restrictions on where init.h can be included to make sure the global used by init is not reference by non-init code. Future changes to init should remove this global. Test: Boot bullhead Change-Id: Ifefa9e1932e9d647d06cca2618f5c8e5a7a85460
82 lines
2.8 KiB
C++
82 lines
2.8 KiB
C++
/*
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* Copyright (C) 2010 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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#ifndef _INIT_UTIL_H_
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#define _INIT_UTIL_H_
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <chrono>
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#include <functional>
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#include <ostream>
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#include <string>
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#include <android-base/chrono_utils.h>
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#include <selinux/label.h>
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#define COLDBOOT_DONE "/dev/.coldboot_done"
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const std::string kAndroidDtDir("/proc/device-tree/firmware/android/");
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using android::base::boot_clock;
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using namespace std::chrono_literals;
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int create_socket(const char* name, int type, mode_t perm, uid_t uid, gid_t gid,
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const char* socketcon, selabel_handle* sehandle);
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bool read_file(const std::string& path, std::string* content);
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bool write_file(const std::string& path, const std::string& content);
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class Timer {
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public:
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Timer() : start_(boot_clock::now()) {}
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double duration_s() const {
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typedef std::chrono::duration<double> double_duration;
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return std::chrono::duration_cast<double_duration>(boot_clock::now() - start_).count();
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}
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int64_t duration_ms() const {
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return std::chrono::duration_cast<std::chrono::milliseconds>(boot_clock::now() - start_)
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.count();
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}
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private:
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android::base::boot_clock::time_point start_;
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};
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std::ostream& operator<<(std::ostream& os, const Timer& t);
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unsigned int decode_uid(const char *s);
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int mkdir_recursive(const std::string& pathname, mode_t mode, selabel_handle* sehandle);
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int wait_for_file(const char *filename, std::chrono::nanoseconds timeout);
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void import_kernel_cmdline(bool in_qemu,
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const std::function<void(const std::string&, const std::string&, bool)>&);
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int make_dir(const char* path, mode_t mode, selabel_handle* sehandle);
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int restorecon(const char *pathname, int flags = 0);
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std::string bytes_to_hex(const uint8_t *bytes, size_t bytes_len);
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bool is_dir(const char* pathname);
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bool expand_props(const std::string& src, std::string* dst);
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void panic() __attribute__((__noreturn__));
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// Reads or compares the content of device tree file under kAndroidDtDir directory.
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bool read_android_dt_file(const std::string& sub_path, std::string* dt_content);
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bool is_android_dt_value_expected(const std::string& sub_path, const std::string& expected_content);
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#endif
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