/*********************************************************************************
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* Copyright: (C) 2025 LingYun IoT System Studio
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* All rights reserved.
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*
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* Filename: dir.c
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* Description: This file is directory API example
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*
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* Version: 1.0.0(10/15/2025)
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* Author: Guo Wenxue <guowenxue@gmail.com>
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* ChangeLog: 1, Release initial version on "10/15/2025 03:39:52 PM"
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*
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********************************************************************************/
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <dirent.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#define TEST_DIR "tmp"
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int main(int argc, char **argv)
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{
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int rv = 0;
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int fd1;
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int fd2;
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DIR *dirp;
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struct dirent *direntp;
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/* 创建文件夹dir, 并设置文件夹权限为755 */
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if( mkdir(TEST_DIR, 0755)<0 )
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{
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printf("create directory '%s' failure: %s\n", TEST_DIR, strerror(errno));
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return -1;
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}
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/* 更改当前工作路径到文件夹dir下去 */
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if( chdir(TEST_DIR)<0 )
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{
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printf("Change directory to '%s' failure: %s\n", TEST_DIR, strerror(errno));
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rv = 2;
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goto cleanup;
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}
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/* 在dir文件夹下 创建普通文本文件file1.txt，并设置其权限位为644 */
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if( (fd1=creat("file1.txt", 0644)) < 0 )
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{
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printf("Create file1.txt failure: %s\n", strerror(errno));
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rv = 3;
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goto cleanup;
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}
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/* 在dir文件夹下 创建普通文本文件file2.txt，并设置其权限位为644 */
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if( (fd2=creat("file2.txt", 0644)) < 0 )
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{
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printf("Create file2.txt failure: %s\n", strerror(errno));
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rv = 4;
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goto cleanup;
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}
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/* 更改当前工作路径到父目录去 */
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if( chdir("../")<0 )
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{
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printf("Change directory to '%s' failure: %s\n", TEST_DIR, strerror(errno));
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rv = 5;
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goto cleanup;
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}
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/* 打开dir文件夹 */
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if((dirp=opendir(TEST_DIR)) == NULL)
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{
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rv = 6;
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printf("opendir %s error: %s\n", TEST_DIR, strerror(errno));
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goto cleanup;
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}
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/* 列出dir里面的所有文件和文件夹 */
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while((direntp = readdir(dirp)) != NULL)
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{
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printf("Find file: %s\n", direntp->d_name);
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}
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/* 关闭所有打开的文件夹 */
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closedir(dirp);
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cleanup:
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if(fd1 >= 0)
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close(fd1);
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if(fd2 >= 0)
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close(fd2);
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return rv;
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}
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