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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2023-05-05 Bernard Implement dentry in dfs v2.0
*/
#ifndef DFS_MNT_H__
#define DFS_MNT_H__
#include <rtservice.h>
#include <rtthread.h>
#ifdef __cplusplus
extern "C"
{
#endif
struct dfs_mnt;
struct dfs_dentry;
struct dfs_filesystem_ops;
struct dfs_mnt
{
struct dfs_mnt *parent; /* the parent mounted file system */
rt_list_t sibling; /* the sibling node for mounted list */
rt_list_t child; /* the child node for mounted list */
char *fullpath; /* the fullpath of this mounted file system */
int flags; /* the falgs of this mounted file system */
#define MNT_IS_ALLOCED 0x1 /* the mnt struct is allocated */
#define MNT_IS_ADDLIST 0x2 /* the mnt struct is added into list */
#define MNT_IS_MOUNTED 0x4 /* the mnt struct is mounted */
#define MNT_IS_UMOUNT 0x8 /* the mnt is unmount */
#define MNT_IS_LOCKED 0x10 /* the mnt is locked */
#define MNT_FORCE 0x20 /* the mnt force unmount */
#define MNT_LAZY_UMNT 0x40 /* the mnt has pending umount */
#define MNT_RDONLY 0x80 /* the mnt is read only */
rt_atomic_t ref_count; /* reference count */
rt_device_t dev_id; /* the mounted device id */
const struct dfs_filesystem_ops *fs_ops;
void *data;
};
struct dfs_mnt *dfs_mnt_create(const char *path);
int dfs_mnt_destroy(struct dfs_mnt* mnt);
int dfs_mnt_list(struct dfs_mnt* mnt);
int dfs_mnt_insert(struct dfs_mnt* mnt, struct dfs_mnt* child);
struct dfs_mnt *dfs_mnt_dev_lookup(rt_device_t dev_id);
struct dfs_mnt *dfs_mnt_lookup(const char *path);
const char *dfs_mnt_get_mounted_path(struct rt_device *device);
struct dfs_mnt* dfs_mnt_ref(struct dfs_mnt* mnt);
int dfs_mnt_unref(struct dfs_mnt* mnt);
int dfs_mnt_umount(struct dfs_mnt *mnt, int flags);
int dfs_mnt_setflags(struct dfs_mnt *mnt, int flags);
rt_bool_t dfs_mnt_has_child_mnt(struct dfs_mnt *mnt, const char* fullpath);
int dfs_mnt_foreach(struct dfs_mnt* (*func)(struct dfs_mnt *mnt, void *parameter), void *parameter);
int dfs_mnt_umount_iter(rt_bool_t (*filter)(struct dfs_mnt *mnt, void *parameter), void *parameter);
typedef void (*dfs_mnt_umnt_cb_t)(struct dfs_mnt *mnt);
RT_OBJECT_HOOKLIST_DECLARE(dfs_mnt_umnt_cb_t, dfs_mnt_umnt);
#ifdef __cplusplus
}
#endif
#endif
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