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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_DENTRY_H__
#define __DFS_DENTRY_H__
#include "dfs_file.h"
#include "dfs_fs.h"
#ifdef __cplusplus
extern "C"
{
#endif
struct dfs_mnt;
struct dfs_vnode;
struct dfs_dentry
{
rt_list_t hashlist;
uint32_t flags;
#define DENTRY_IS_MOUNTED 0x1 /* dentry is mounted */
#define DENTRY_IS_ALLOCED 0x2 /* dentry is allocated */
#define DENTRY_IS_ADDHASH 0x4 /* dentry was added into hash table */
#define DENTRY_IS_OPENED 0x8 /* dentry was opened. */
char *pathname; /* the pathname under mounted file sytem */
struct dfs_vnode *vnode; /* the vnode of this dentry */
struct dfs_mnt *mnt; /* which mounted file system does this dentry belong to */
rt_atomic_t ref_count; /* the reference count */
};
struct dfs_dentry *dfs_dentry_create(struct dfs_mnt *mnt, char *fullpath);
struct dfs_dentry *dfs_dentry_unref(struct dfs_dentry *dentry);
struct dfs_dentry *dfs_dentry_ref(struct dfs_dentry *dentry);
void dfs_dentry_insert(struct dfs_dentry *dentry);
struct dfs_dentry *dfs_dentry_lookup(struct dfs_mnt *mnt, const char *path, uint32_t flags);
/* get full path of a dentry */
char* dfs_dentry_full_path(struct dfs_dentry* dentry);
/* get pathname (with mnt path) of a dentry */
char* dfs_dentry_pathname(struct dfs_dentry* dentry);
/* get full path crc32 */
uint32_t dfs_dentry_full_path_crc32(struct dfs_dentry* dentry);
int dfs_dentry_init(void);
#ifdef __cplusplus
}
#endif
#endif /*__DFS_DENTRY_H__*/
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