#include <Ext2Directory.h>

Inheritance diagram for Ext2Directory:

Collaboration diagram for Ext2Directory:

Public Member Functions
	Ext2Directory (const String &name, uintptr_t inode_num, Inode inode, class Ext2Filesystem pFs, File *pParent)

virtual	~Ext2Directory ()

void	truncate ()

virtual void	cacheDirectoryContents ()

virtual bool	addEntry (String filename, File *pFile, size_t type)

virtual bool	removeEntry (const String &filename, Ext2Node *pFile)

void	fileAttributeChanged ()

Public Member Functions inherited from Directory
	Directory ()

	Directory (const String &name, Time::Timestamp accessedTime, Time::Timestamp modifiedTime, Time::Timestamp creationTime, uintptr_t inode, class Filesystem pFs, size_t size, File pParent)

virtual	~Directory ()

virtual bool	isDirectory ()

File *	getChild (size_t n)

size_t	getNumChildren ()

virtual bool	isCachePopulated () const

File *	lookup (const HashedStringView &s) const

void	remove (const HashedStringView &s)

Directory *	getReparsePoint () const
	Get the reparse point attached to this directory. Reparse points allow locations on the filesystem to redirect lookups to a separate directory. While the reparse point is active, the target directory is used for lookups instead of this one.

void	setReparsePoint (Directory *pTarget)

bool	addEphemeralFile (File *pFile)
	Add an ephemeral file to the directory. More...

bool	empty ()

Public Member Functions inherited from File
	File ()

	File (const String &name, Time::Timestamp accessedTime, Time::Timestamp modifiedTime, Time::Timestamp creationTime, uintptr_t inode, class Filesystem pFs, size_t size, File pParent)

virtual	~File ()

virtual uint64_t	read (uint64_t location, uint64_t size, uintptr_t buffer, bool bCanBlock=true) final

virtual uint64_t	write (uint64_t location, uint64_t size, uintptr_t buffer, bool bCanBlock=true) final

virtual physical_uintptr_t	getPhysicalPage (size_t offset)

virtual void	returnPhysicalPage (size_t offset)

virtual void	sync ()

virtual void	sync (size_t offset, bool async)

Time::Timestamp	getCreationTime ()

void	setCreationTime (Time::Timestamp t)

Time::Timestamp	getAccessedTime ()

void	setAccessedTime (Time::Timestamp t)

Time::Timestamp	getModifiedTime ()

void	setModifiedTime (Time::Timestamp t)

String	getName () const

void	getName (String &s) const

virtual String	getFullPath (bool bWithLabel=true)

size_t	getSize ()

void	setSize (size_t sz)

virtual bool	isSymlink ()

virtual bool	isPipe () const

virtual bool	isFifo () const

virtual bool	isSocket () const

uintptr_t	getInode () const

virtual void	setInode (uintptr_t inode)

Filesystem *	getFilesystem () const

void	setFilesystem (Filesystem *pFs)

virtual void	increaseRefCount (bool bIsWriter)

virtual void	decreaseRefCount (bool bIsWriter)

void	setPermissions (uint32_t perms)

uint32_t	getPermissions () const

void	setUid (size_t uid)

size_t	getUid () const

void	setGid (size_t gid)

size_t	getGid () const

File *	getParent () const

virtual int	select (bool bWriting=false, int timeout=0)

void	monitor (Thread pThread, Event pEvent)

void	cullMonitorTargets (Thread *pThread)

virtual bool	supports (const size_t command) const

virtual int	command (const size_t command, void *buffer)

virtual size_t	getBlockSize () const

void	enableDirect ()

void	disableDirect ()

virtual void	preallocate (size_t expectedSize, bool zero=true)

virtual File *	open ()

Public Member Functions inherited from Ext2Node
	Ext2Node (uintptr_t inode_num, Inode pInode, class Ext2Filesystem pFs)

virtual	~Ext2Node ()

Inode *	getInode ()

uint32_t	getInodeNumber ()

void	fileAttributeChanged (size_t size, size_t atime, size_t mtime, size_t ctime)

void	updateMetadata (uint16_t uid, uint16_t gid, uint32_t perms)

void	wipe ()

void	extend (size_t newSize)

void	extend (size_t newSize, uint64_t location, uint64_t size)

uintptr_t	readBlock (uint64_t location)

void	writeBlock (uint64_t location)

void	trackBlock (uint32_t block)

void	pinBlock (uint64_t location)

void	unpinBlock (uint64_t location)

void	sync (size_t offset, bool async)

Private Member Functions
	Ext2Directory (const Ext2Directory &file)

Ext2Directory &	operator= (const Ext2Directory &)

virtual File *	convertToFile (const DirectoryEntryMetadata &meta)

Additional Inherited Members
Static Public Member Functions inherited from Directory
static Directory *	fromFile (File *pF)

Protected Types inherited from Directory
typedef LazyEvaluate< File, DirectoryEntryMetadata, evaluateEntry, destroyEntry >	DirectoryEntry

Protected Member Functions inherited from Directory
virtual const DirectoryEntryCache &	getCache ()

void	markCachePopulated ()

void	addDirectoryEntry (const String &name, File *pTarget)

void	addDirectoryEntry (const String &name, DirectoryEntryMetadata &&meta)

void	preallocateDirectoryEntries (size_t count)

Protected Member Functions inherited from File
virtual uint64_t	readBytewise (uint64_t location, uint64_t size, uintptr_t buffer, bool bCanBlock=true)

virtual uint64_t	writeBytewise (uint64_t location, uint64_t size, uintptr_t buffer, bool bCanBlock=true)

virtual uintptr_t	readBlock (uint64_t location)

virtual void	writeBlock (uint64_t location, uintptr_t addr)

virtual void	extend (size_t newSize)

virtual void	extend (size_t newSize, uint64_t location, uint64_t size)

void	dataChanged ()

void	getFilesystemLabel (HugeStaticString &s)

virtual void	pinBlock (uint64_t location)

virtual void	unpinBlock (uint64_t location)

void	evict (uint64_t location)

void	setPermissionsOnly (uint32_t perms)

void	setUidOnly (size_t uid)

void	setGidOnly (size_t gid)

Protected Member Functions inherited from Ext2Node
bool	ensureLargeEnough (size_t size, uint64_t location, uint64_t opsize, bool onlyBlocks=false, bool nozeroblocks=false)

bool	addBlock (uint32_t blockValue)

bool	ensureBlockLoaded (size_t nBlock)

bool	getBlockNumber (size_t nBlock)

bool	getBlockNumberIndirect (uint32_t inode_block, size_t nBlocks, size_t nBlock)

bool	getBlockNumberBiindirect (uint32_t inode_block, size_t nBlocks, size_t nBlock)

bool	getBlockNumberTriindirect (uint32_t inode_block, size_t nBlocks, size_t nBlock)

bool	setBlockNumber (size_t blockNum, uint32_t blockValue)

uint32_t	modeToPermissions (uint32_t mode) const

uint32_t	permissionsToMode (uint32_t permissions) const

Static Protected Member Functions inherited from File
static void	writeCallback (CacheConstants::CallbackCause cause, uintptr_t loc, uintptr_t page, void *meta)

Protected Attributes inherited from File
String	m_Name

Time::Timestamp	m_AccessedTime

Time::Timestamp	m_ModifiedTime

Time::Timestamp	m_CreationTime

uintptr_t	m_Inode

class Filesystem *	m_pFilesystem

size_t	m_Size

File *	m_pParent

size_t	m_nWriters

size_t	m_nReaders

size_t	m_Uid

size_t	m_Gid

uint32_t	m_Permissions

HashTable< DataCacheKey, uintptr_t >	m_DataCache

bool	m_bDirect

Cache	m_FillCache

Mutex	m_Lock

List< MonitorTarget * >	m_MonitorTargets

Protected Attributes inherited from Ext2Node
Inode *	m_pInode

uint32_t	m_InodeNumber

class Ext2Filesystem *	m_pExt2Fs

Vector< uint32_t >	m_Blocks

uint32_t	m_nMetadataBlocks

size_t	m_nSize

Detailed Description

A File is a file, a directory or a symlink.

Definition at line 32 of file Ext2Directory.h.

Constructor & Destructor Documentation

Ext2Directory::Ext2Directory ( const Ext2Directory & file )

private

Copy constructors are hidden - unused!

Referenced by convertToFile().

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Ext2Directory::Ext2Directory	(	const String &	name,
		uintptr_t	inode_num,
		Inode *	inode,
		class Ext2Filesystem *	pFs,
		File *	pParent
	)

Constructor, should be called only by a Filesystem.

Definition at line 36 of file Ext2Directory.cc.

References File::setGidOnly(), File::setPermissionsOnly(), and File::setUidOnly().

Ext2Directory::~Ext2Directory ( )

virtual

Destructor

Definition at line 53 of file Ext2Directory.cc.

Member Function Documentation

bool Ext2Directory::addEntry	(	String	filename,
		File *	pFile,
		size_t	type
	)

virtual

Adds a directory entry.

Todo:: Ensure 4-byte alignment.

Todo:: Previous directory entry might need its reclen updated to point to this new entry (as directory entries cannot cross block boundaries).

Todo:: Update our i_size for our directory.

Definition at line 57 of file Ext2Directory.cc.

References Directory::addDirectoryEntry(), cacheDirectoryContents(), Vector< T >::count(), ERROR, fileAttributeChanged(), Ext2Filesystem::m_BlockSize, Ext2Filesystem::readBlock(), and Ext2Filesystem::writeBlock().

Referenced by Ext2Filesystem::createNode(), and truncate().

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void Ext2Directory::cacheDirectoryContents ( )

virtual

Reads directory contents into File* cache.

Todo:: need to handle short/failed reads better

Reimplemented from Directory.

Definition at line 290 of file Ext2Directory.cc.

References Directory::addDirectoryEntry(), assert, Vector< T >::count(), ERROR, Directory::isCachePopulated(), Ext2Filesystem::m_BlockSize, Directory::markCachePopulated(), and Ext2Filesystem::readBlock().

Referenced by addEntry(), and truncate().

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File * Ext2Directory::convertToFile ( const DirectoryEntryMetadata & meta )

privatevirtual

Convert given metadata into a useful File object.

Reimplemented from Directory.

Definition at line 410 of file Ext2Directory.cc.

References Ext2Directory(), and FATAL.

Referenced by truncate().

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void Ext2Directory::fileAttributeChanged ( )

virtual

Updates inode attributes.

Reimplemented from File.

Definition at line 402 of file Ext2Directory.cc.

References Ext2Node::updateMetadata().

Referenced by addEntry(), and truncate().

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bool Ext2Directory::removeEntry	(	const String &	filename,
		Ext2Node *	pFile
	)

virtual

Removes a directory entry.

Todo:: Okay, this is not quite enough. The previous entry needs to be updated to skip past this now-empty entry. If this was the first entry, a blank record must be created to point to either the next entry or the end of the block.

Definition at line 213 of file Ext2Directory.cc.

References Vector< T >::count(), Ext2Filesystem::m_BlockSize, Ext2Filesystem::readBlock(), Ext2Filesystem::releaseInode(), Ext2Node::wipe(), and Ext2Filesystem::writeBlock().

Referenced by Ext2Filesystem::remove(), and truncate().

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void Ext2Directory::truncate ( )

inlinevirtual

Delete all data from the file.

Reimplemented from File.

Definition at line 47 of file Ext2Directory.h.

References addEntry(), cacheDirectoryContents(), convertToFile(), fileAttributeChanged(), and removeEntry().

The documentation for this class was generated from the following files:

Public Member Functions

Private Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation