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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2005-02-22 Bernard The first version.
* 2023-05-05 Bernard Change to dfs v2.0
*/
#ifndef __DFS_FS_H__
#define __DFS_FS_H__
#include <dfs.h>
#include <dfs_file.h>
#ifdef __cplusplus
extern "C"
{
#endif
/* file system partition table */
struct dfs_partition
{
uint8_t type; /* file system type */
off_t offset; /* partition start offset */
size_t size; /* partition size */
rt_sem_t lock;
};
struct dfs_attr
{
unsigned int ia_valid;
uid_t st_uid;
gid_t st_gid;
mode_t st_mode;
struct timespec ia_atime;
struct timespec ia_mtime;
};
struct dfs_mnt;
struct dfs_dentry;
struct dfs_vnode;
struct statfs;
struct dfs_filesystem_ops
{
const char *name;
uint32_t flags;
#define FS_NEED_DEVICE 0x1
const struct dfs_file_ops *default_fops;
int (*mount)(struct dfs_mnt *mnt, unsigned long rwflag, const void *data);
int (*umount)(struct dfs_mnt *mnt);
int (*mkfs)(rt_device_t devid, const char *fs_name);
int (*readlink)(struct dfs_dentry *dentry, char *buf, int len);
int (*link)(struct dfs_dentry *src_dentry, struct dfs_dentry *dst_dentry); /*hard link interface */
int (*unlink)(struct dfs_dentry *dentry);
int (*symlink)(struct dfs_dentry *parent_dentry, const char *target, const char *newpath); /*soft link interface*/
int (*rename)(struct dfs_dentry *old_dentry, struct dfs_dentry *new_dentry);
int (*stat)(struct dfs_dentry *dentry, struct stat *buf);
int (*statfs)(struct dfs_mnt *mnt, struct statfs *buf);
int (*setattr) (struct dfs_dentry *dentry, struct dfs_attr *attr);
struct dfs_vnode* (*lookup)(struct dfs_dentry *dentry);
struct dfs_vnode* (*create_vnode)(struct dfs_dentry *dentry, int type, mode_t mode);
int (*free_vnode)(struct dfs_vnode* vnode);
};
struct dfs_filesystem_type
{
const struct dfs_filesystem_ops *fs_ops;
struct dfs_filesystem_type *next;
};
struct dfs_filesystem_type *dfs_filesystems(void);
int dfs_unregister(struct dfs_filesystem_type *fs);
int dfs_register(struct dfs_filesystem_type *fs);
const char *dfs_filesystem_get_mounted_path(struct rt_device *device);
int dfs_mount(const char *device_name,
const char *path,
const char *filesystemtype,
unsigned long rwflag,
const void *data);
int dfs_umount(const char *specialfile, int flags);
int dfs_unmount(const char *specialfile);
int dfs_is_mounted(struct dfs_mnt *mnt);
int dfs_mkfs(const char *fs_name, const char *device_name);
int dfs_statfs(const char *path, struct statfs *buffer);
int dfs_filesystem_get_partition(struct dfs_partition *part,
uint8_t *buf,
uint32_t pindex);
#ifdef __cplusplus
}
#endif
#endif
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