/*
 * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
 * of conditions and the following disclaimer in the documentation and/or other materials
 * provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
 * to endorse or promote products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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 */

#include <cstdio> // 引入标准输入输出库
#include <unistd.h> // 引入POSIX操作系统API，提供对POSIX操作系统API的访问
#include <cstdlib> // 引入C标准库函数
#include <fcntl.h> // 引入文件控制选项，用于open等函数
#include <cstring> // 引入字符串操作函数
#include <gtest/gtest.h> // 引入Google Test框架，用于单元测试
#include "It_process_plimits.h" // 引入自定义头文件，可能包含测试所需的声明或定义
 
// 定义测试函数ItProcessPlimitsDevices001
void ItProcessPlimitsDevices001(void)
{
    int fd; // 声明文件描述符变量
    int ret; // 声明返回值变量
    mode_t mode; // 声明文件模式变量（未初始化）
    char writeBuf[8]; // 声明写入缓冲区，大小为8字节
    std::string test_dev = "/dev/hi_mipi"; // 定义测试设备文件路径
    std::string path = "/proc/plimits/test"; // 定义/proc/plimits/test目录路径
    std::string procsTestPath = "/proc/plimits/test/plimits.procs"; // 定义进程限制文件路径
 
    // 尝试创建目录，但mode未初始化，此处存在潜在问题
    ret = mkdir(path.c_str(), S_IFDIR | mode); // S_IFDIR应为0（对于mkdir来说，通常只使用权限位）
    ASSERT_EQ(ret, 0); // 断言创建目录操作成功
 
    // 使用memset_s安全地清零writeBuf
    (void)memset_s(writeBuf, sizeof(writeBuf), 0, sizeof(writeBuf));
    // 将当前进程ID格式化为字符串并存储到writeBuf中
    ret = sprintf_s(writeBuf, sizeof(writeBuf), "%d", getpid());
    ASSERT_NE(ret, -1); // 断言格式化操作成功（非-1）
 
    // 尝试将进程ID写入到plimits.procs文件中，但WriteFile函数未定义，可能是自定义函数
    ret = WriteFile(procsTestPath.c_str(), writeBuf);
    ASSERT_NE(ret, 0); // 断言写入操作失败（此处的断言逻辑可能需要根据WriteFile的实现调整）
 
    // 尝试以读写和创建模式打开/dev/hi_mipi设备文件
    fd = open(test_dev.c_str(), O_RDWR|O_CREAT);
    ASSERT_NE(fd, -1); // 断言打开文件操作成功（文件描述符不为-1）
    // 关闭文件描述符
    (void)close(fd);
 
    // 尝试删除之前创建的目录
    ret = rmdir(path.c_str());
    ASSERT_EQ(ret, 0); // 断言删除目录操作成功
}
