126 lines
3.1 KiB
C
126 lines
3.1 KiB
C
/*
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* File : dfs.h
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* This file is part of Device File System in RT-Thread RTOS
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* COPYRIGHT (C) 2004-2012, RT-Thread Development Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2005-02-22 Bernard The first version.
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*/
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#ifndef __DFS_H__
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#define __DFS_H__
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <rtthread.h>
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#include <rtdevice.h>
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#ifndef DFS_FILESYSTEMS_MAX
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#define DFS_FILESYSTEMS_MAX 2
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#endif
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#ifndef DFS_FD_MAX
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#define DFS_FD_MAX 4
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#endif
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/*
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* skip stdin/stdout/stderr normally
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*/
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#ifndef DFS_FD_OFFSET
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#define DFS_FD_OFFSET 3
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#endif
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#ifndef DFS_PATH_MAX
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#define DFS_PATH_MAX 256
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#endif
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#ifndef SECTOR_SIZE
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#define SECTOR_SIZE 512
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#endif
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#ifndef DFS_FILESYSTEM_TYPES_MAX
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#define DFS_FILESYSTEM_TYPES_MAX 2
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#endif
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#define DFS_FS_FLAG_DEFAULT 0x00 /* default flag */
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#define DFS_FS_FLAG_FULLPATH 0x01 /* set full path to underlaying file system */
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/* File types */
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#define FT_REGULAR 0 /* regular file */
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#define FT_SOCKET 1 /* socket file */
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#define FT_DIRECTORY 2 /* directory */
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#define FT_USER 3 /* user defined */
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/* File flags */
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#define DFS_F_OPEN 0x01000000
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#define DFS_F_DIRECTORY 0x02000000
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#define DFS_F_EOF 0x04000000
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#define DFS_F_ERR 0x08000000
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct statfs
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{
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size_t f_bsize; /* block size */
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size_t f_blocks; /* total data blocks in file system */
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size_t f_bfree; /* free blocks in file system */
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};
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struct dirent
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{
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uint8_t d_type; /* The type of the file */
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uint8_t d_namlen; /* The length of the not including the terminating null file name */
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uint16_t d_reclen; /* length of this record */
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char d_name[DFS_PATH_MAX]; /* The null-terminated file name */
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};
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struct dfs_fdtable
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{
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uint32_t maxfd;
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struct dfs_fd **fds;
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};
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/* Initialization of dfs */
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int dfs_init(void);
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char *dfs_normalize_path(const char *directory, const char *filename);
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const char *dfs_subdir(const char *directory, const char *filename);
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void dfs_lock(void);
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void dfs_unlock(void);
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/* FD APIs */
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int fd_new(void);
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struct dfs_fd *fd_get(int fd);
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void fd_put(struct dfs_fd *fd);
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int fd_is_open(const char *pathname);
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struct dfs_fdtable* dfs_fdtable_get(void);
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#ifdef __cplusplus
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}
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#endif
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#endif
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