65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
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/*
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* Copyright (c) 2006-2023, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2023-05-05 Bernard Implement dentry in dfs v2.0
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*/
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#ifndef __DFS_DENTRY_H__
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#define __DFS_DENTRY_H__
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#include "dfs_file.h"
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#include "dfs_fs.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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struct dfs_mnt;
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struct dfs_vnode;
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struct dfs_dentry
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{
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rt_list_t hashlist;
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uint32_t flags;
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#define DENTRY_IS_MOUNTED 0x1 /* dentry is mounted */
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#define DENTRY_IS_ALLOCED 0x2 /* dentry is allocated */
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#define DENTRY_IS_ADDHASH 0x4 /* dentry was added into hash table */
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#define DENTRY_IS_OPENED 0x8 /* dentry was opened. */
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char *pathname; /* the pathname under mounted file sytem */
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struct dfs_vnode *vnode; /* the vnode of this dentry */
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struct dfs_mnt *mnt; /* which mounted file system does this dentry belong to */
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rt_atomic_t ref_count; /* the reference count */
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};
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struct dfs_dentry *dfs_dentry_create(struct dfs_mnt *mnt, char *fullpath);
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struct dfs_dentry *dfs_dentry_unref(struct dfs_dentry *dentry);
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struct dfs_dentry *dfs_dentry_ref(struct dfs_dentry *dentry);
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void dfs_dentry_insert(struct dfs_dentry *dentry);
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struct dfs_dentry *dfs_dentry_lookup(struct dfs_mnt *mnt, const char *path, uint32_t flags);
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/* get full path of a dentry */
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char* dfs_dentry_full_path(struct dfs_dentry* dentry);
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/* get pathname (with mnt path) of a dentry */
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char* dfs_dentry_pathname(struct dfs_dentry* dentry);
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/* get full path crc32 */
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uint32_t dfs_dentry_full_path_crc32(struct dfs_dentry* dentry);
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int dfs_dentry_init(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /*__DFS_DENTRY_H__*/
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