#include <Ext2File.h>

Inheritance diagram for Ext2File:

Collaboration diagram for Ext2File:

Public Member Functions
	Ext2File (const String &name, uintptr_t inode_num, Inode inode, class Ext2Filesystem pFs, File *pParent=0)

virtual	~Ext2File ()

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

virtual void	extend (size_t newSize)

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

virtual void	truncate ()

void	fileAttributeChanged ()

virtual uintptr_t	readBlock (uint64_t location)

virtual void	writeBlock (uint64_t location, uintptr_t addr)

virtual void	pinBlock (uint64_t location)

virtual void	unpinBlock (uint64_t location)

virtual void	sync (size_t offset, bool async)

virtual size_t	getBlockSize () const

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 ()

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	isDirectory ()

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)

void	enableDirect ()

void	disableDirect ()

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
	Ext2File (const Ext2File &file)

Ext2File &	operator= (const Ext2File &)

Additional Inherited Members
Protected Member Functions inherited from File
virtual bool	isBytewise () const

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)

void	dataChanged ()

void	getFilesystemLabel (HugeStaticString &s)

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 31 of file Ext2File.h.

Constructor & Destructor Documentation

Ext2File::Ext2File ( const Ext2File & file )

private

Copy constructors are hidden - unused!

Referenced by Ext2Filesystem::createNode().

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Ext2File::Ext2File	(	const String &	name,
		uintptr_t	inode_num,
		Inode *	inode,
		class Ext2Filesystem *	pFs,
		File *	pParent = `0`
	)

Constructor, should be called only by a Filesystem.

Definition at line 27 of file Ext2File.cc.

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

Ext2File::~Ext2File ( )

virtual

Destructor

Definition at line 44 of file Ext2File.cc.

Member Function Documentation

void Ext2File::extend ( size_t newSize )

virtual

Internal function to extend a file to be at least the given size.

Reimplemented from File.

Definition at line 54 of file Ext2File.cc.

void Ext2File::extend	(	size_t	newSize,
		uint64_t	location,
		uint64_t	size
	)

virtual

Does the same thing as extend() but with an optional hint indicating that the upcoming write will fill an entire block. This hint can be used to do things like avoid zeroing the block that would otherwise be written over anyway.

Reimplemented from File.

Definition at line 60 of file Ext2File.cc.

void Ext2File::fileAttributeChanged ( )

virtual

Updates inode attributes.

Reimplemented from File.

Definition at line 73 of file Ext2File.cc.

References Ext2Node::updateMetadata().

size_t Ext2File::getBlockSize ( ) const

virtual

Function to retrieve the block size returned by readBlock.

Note: This must be constant throughout the life of the file.

Reimplemented from File.

Definition at line 106 of file Ext2File.cc.

References Ext2Filesystem::m_BlockSize.

void Ext2File::pinBlock ( uint64_t location )

virtual

Pins the given page.

If your File subclass uses a Cache for readBlock, this method should be implemented to call Cache::pin. The VFS layer calls this method when it determines it is about to give a physical page to an upper layer, and therefore will be unable to guarantee the virtual page's dirty status is a correct reflection of the page's state.

Reimplemented from File.

Definition at line 91 of file Ext2File.cc.

Referenced by Ext2Filesystem::releaseInode().

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