file.h

上一个上传的有问题,这个是好的。visopsys包括系统内核和GUI的全部SOURCE code ,还包括一些基本的docs文档。里面src子目录对应所有SOURCE code.对于想研究操作系统的朋

//
//  Visopsys
//  Copyright (C) 1998-2007 J. Andrew McLaughlin
// 
//  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.,
//  59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
//  file.h
//

// This file contains definitions and structures for using and manipulating
// files in Visopsys.

#if !defined(_FILE_H)

#include <sys/memory.h>

// File open modes
#define OPENMODE_READ 0x01
#define OPENMODE_WRITE 0x02
#define OPENMODE_CREATE 0x04
#define OPENMODE_TRUNCATE 0x8
#define OPENMODE_READWRITE (OPENMODE_READ | OPENMODE_WRITE)

// Pathname limits
#define MAX_NAME_LENGTH 512
#define MAX_PATH_LENGTH 512
#define MAX_PATH_NAME_LENGTH (MAX_PATH_LENGTH + MAX_NAME_LENGTH)

// Typedef a file handle
typedef void* fileHandle;

typedef enum
{
  fileT, dirT, volT, unknownT

} fileType;

// This is the structure used to store universal information about a file
typedef struct
{
  fileHandle handle;
  char name[MAX_NAME_LENGTH];
  fileType type;
  char filesystem[MAX_PATH_LENGTH];
  unsigned creationDate;
  unsigned creationTime;
  unsigned accessedTime;
  unsigned accessedDate;
  unsigned modifiedDate;
  unsigned modifiedTime;
  unsigned size;
  unsigned blocks;
  unsigned blockSize;
  int openMode;

} file;

#define _FILE_H
#endif