RT-Thread finsh源碼分析: finsh_error.h

/*
 *  error number for finsh shell.
 *
 * COPYRIGHT (C) 2013, Shanghai Real-Thread Technology Co., Ltd
 *
 *  This file is part of RT-Thread (http://www.rt-thread.org)
 *  Maintainer: bernard.xiong <bernard.xiong at gmail.com>
 *
 *  All rights reserved.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Change Logs:
 * Date           Author       Notes
 * 2010-03-22     Bernard      first version
 */
#ifndef __FINSH_ERROR_H__
#define __FINSH_ERROR_H__

#include <finsh.h>  //此處引用了錯誤碼類型的宏定義

int finsh_error_init(void);    //錯誤碼    global_errno = FINSH_ERROR_OK;

/* get error number */
u_char finsh_errno(void);  //獲取錯誤碼global_errno

int finsh_error_set(u_char type);  //設置錯誤碼類型，在finsh.h中定義
const char* finsh_error_string(u_char type); //通過錯誤碼類型找到對應字符串

#endif