forked from xuos/xiuos
83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
/*
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* Copyright (c) 2020 AIIT XUOS Lab
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* XiUOS is licensed under Mulan PSL v2.
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* You can use this software according to the terms and conditions of the Mulan PSL v2.
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* You may obtain a copy of Mulan PSL v2 at:
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* http://license.coscl.org.cn/MulanPSL2
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PSL v2 for more details.
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*/
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/**
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* @file: test_fs.c
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* @brief: a application of file_system function
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* @version: 1.1
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* @author: AIIT XUOS Lab
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* @date: 2022/11/17
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*/
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#include <stdio.h>
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#include <string.h>
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#include <transform.h>
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#ifdef ADD_XIZI_FEATURES
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#define MAX_READ_LENGTH 1000
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// sd card here is loaded as "/"
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void TestFs(void)
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{
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//open the file in sdcard
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int fd = open(FPATH,O_RDWR|O_CREAT);
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if(fd<0){
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printf("fs fd open error:%d\n",fd);
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return;
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}
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char filewords[MAX_READ_LENGTH];
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memset(filewords,0,MAX_READ_LENGTH);
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const char *input_words = "these words are going to write in fs\n";
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//read and write then close file
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int err_flag = read(fd,filewords,MAX_READ_LENGTH);
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if(err_flag<0){
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printf("read failed,error:%d\n",err_flag);
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return;
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}
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printf("read data is \n%s\n",filewords);
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err_flag = write(fd,input_words,strlen(input_words));
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if(err_flag<0){
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printf("write failed,error:%d\n",err_flag);
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return;
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}
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err_flag = close(fd);
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if(err_flag<0){
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printf("close failed,error %d\n",err_flag);
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return ;
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}
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//re-open the file and re-read the file
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fd = open(FPATH,O_RDWR);
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if(fd<0){
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printf("fs fd open error:%d\n",fd);
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return;
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}
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err_flag = read(fd,filewords,MAX_READ_LENGTH);
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if(err_flag<0){
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printf("read failed,error:%d\n",err_flag);
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return;
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}
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printf("read data is \n%s\n",filewords);
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err_flag = close(fd);
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if(err_flag<0){
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printf("close failed,error:%d\n",err_flag);
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return;
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}
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return;
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}
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PRIV_SHELL_CMD_FUNCTION(TestFs, a sd or usb filesystem test sample, PRIV_SHELL_CMD_MAIN_ATTR);
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#endif |