Directory entry structure. More...

#include <dentry.h>

Collaboration diagram for dentry_t:

Public Member Functions
	_Atomic (uint64_t) mountCount
	Number of mounts targeting this dentry.

Data Fields
ref_t	ref

dentry_id_t	id

char	name [MAX_NAME]
	The name of the dentry, immutable after creation.

vnode_t *	vnode
	Will be `NULL` if the dentry is negative, once positive it will never be modified.

dentry_t *	parent
	The parent dentry, will be itself if this is the root dentry, immutable after creation.

list_entry_t	siblingEntry

list_t	children

superblock_t *	superblock

const dentry_ops_t *	ops

void *	data

struct dentry *	next
	Next dentry in the dentry cache hash bucket.

rcu_entry_t	rcu
	RCU entry for deferred cleanup.

list_entry_t	otherEntry
	Made available for use by any other subsystems for convenience.

Detailed Description

Directory entry structure.

A dentry structure is protected by the mutex of its vnode. Note that since move and rename are not supported in favor of link and remove, the parent of a dentry will never change after creation which allows some optimizations.

Definition at line 154 of file dentry.h.

Member Function Documentation

◆ _Atomic()

dentry_t::_Atomic ( uint64_t )

Number of mounts targeting this dentry.

Field Documentation

◆ ref

ref_t dentry_t::ref

Definition at line 156 of file dentry.h.

◆ id

dentry_id_t dentry_t::id

Definition at line 157 of file dentry.h.

◆ name

char dentry_t::name[MAX_NAME]

The name of the dentry, immutable after creation.

Definition at line 158 of file dentry.h.

◆ vnode

vnode_t* dentry_t::vnode

Will be NULL if the dentry is negative, once positive it will never be modified.

Definition at line 159 of file dentry.h.

◆ parent

dentry_t* dentry_t::parent

The parent dentry, will be itself if this is the root dentry, immutable after creation.

Definition at line 160 of file dentry.h.

◆ siblingEntry

list_entry_t dentry_t::siblingEntry

Definition at line 161 of file dentry.h.

◆ children

list_t dentry_t::children

Definition at line 162 of file dentry.h.

◆ superblock

superblock_t* dentry_t::superblock

Definition at line 163 of file dentry.h.

◆ ops

const dentry_ops_t* dentry_t::ops

Definition at line 164 of file dentry.h.

◆ data

void* dentry_t::data

Definition at line 165 of file dentry.h.

◆ next

struct dentry* dentry_t::next

Next dentry in the dentry cache hash bucket.

Definition at line 166 of file dentry.h.

◆ rcu

rcu_entry_t dentry_t::rcu

RCU entry for deferred cleanup.

Definition at line 168 of file dentry.h.

◆ otherEntry

list_entry_t dentry_t::otherEntry

Made available for use by any other subsystems for convenience.

Definition at line 169 of file dentry.h.

The documentation for this struct was generated from the following file:

include/kernel/fs/dentry.h

Public Member Functions

Data Fields