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/*
* File : dfs.h
* This file is part of Device File System in RT-Thread RTOS
* COPYRIGHT (C) 2004-2012, RT-Thread Development Team
*
* 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
* 2005-02-22 Bernard The first version.
*/
#ifndef __DFS_H__
#define __DFS_H__
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <rtthread.h>
#include <rtdevice.h>
#ifndef DFS_FILESYSTEMS_MAX
#define DFS_FILESYSTEMS_MAX 2
#endif
#ifndef DFS_FD_MAX
#define DFS_FD_MAX 4
#endif
/*
* skip stdin/stdout/stderr normally
*/
#ifndef DFS_FD_OFFSET
#define DFS_FD_OFFSET 3
#endif
#ifndef DFS_PATH_MAX
#define DFS_PATH_MAX 256
#endif
#ifndef SECTOR_SIZE
#define SECTOR_SIZE 512
#endif
#ifndef DFS_FILESYSTEM_TYPES_MAX
#define DFS_FILESYSTEM_TYPES_MAX 2
#endif
#define DFS_FS_FLAG_DEFAULT 0x00 /* default flag */
#define DFS_FS_FLAG_FULLPATH 0x01 /* set full path to underlaying file system */
/* File types */
#define FT_REGULAR 0 /* regular file */
#define FT_SOCKET 1 /* socket file */
#define FT_DIRECTORY 2 /* directory */
#define FT_USER 3 /* user defined */
/* File flags */
#define DFS_F_OPEN 0x01000000
#define DFS_F_DIRECTORY 0x02000000
#define DFS_F_EOF 0x04000000
#define DFS_F_ERR 0x08000000
#ifdef __cplusplus
extern "C" {
#endif
struct statfs
{
size_t f_bsize; /* block size */
size_t f_blocks; /* total data blocks in file system */
size_t f_bfree; /* free blocks in file system */
};
struct dirent
{
uint8_t d_type; /* The type of the file */
uint8_t d_namlen; /* The length of the not including the terminating null file name */
uint16_t d_reclen; /* length of this record */
char d_name[DFS_PATH_MAX]; /* The null-terminated file name */
};
struct dfs_fdtable
{
uint32_t maxfd;
struct dfs_fd **fds;
};
/* Initialization of dfs */
int dfs_init(void);
char *dfs_normalize_path(const char *directory, const char *filename);
const char *dfs_subdir(const char *directory, const char *filename);
void dfs_lock(void);
void dfs_unlock(void);
/* FD APIs */
int fd_new(void);
struct dfs_fd *fd_get(int fd);
void fd_put(struct dfs_fd *fd);
int fd_is_open(const char *pathname);
struct dfs_fdtable* dfs_fdtable_get(void);
#ifdef __cplusplus
}
#endif
#endif
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