Partition Class Reference

#include <Partition.h>

Inheritance diagram for Partition:

Collaboration diagram for Partition:

Public Member Functions
	Partition (String type, uint64_t start, uint64_t length)
virtual void	getName (String &str)
virtual void	dump (String &str)
virtual uintptr_t	read (uint64_t location)
virtual void	write (uint64_t location)
virtual size_t	getSize () const
	Gets the size of the disk. More...
virtual size_t	getBlockSize () const
	Gets the block size of the disk. More...
uint64_t	getStart ()
uint64_t	getLength () const
String	getPartitionType ()
Public Member Functions inherited from Disk
	Disk (Device *p)
virtual Type	getType ()
virtual SubType	getSubType ()
virtual void	align (uint64_t location)
	Sets the page boundary alignment after a specific location on the disk. More...
virtual void	pin (uint64_t location)
	Pins a cache page. More...
virtual void	unpin (uint64_t location)
virtual bool	cacheIsCritical ()
	Whether or not the cache is critical and cannot be flushed or deleted. More...
virtual void	flush (uint64_t location)
	Flush a cached page to disk. More...
Public Member Functions inherited from Device
	Device (Device *p)
Device *	getParent () const
void	setParent (Device *p)
virtual String	getSpecificType ()
virtual void	setSpecificType (String str)
void	setPciPosition (uint32_t bus, uint32_t device, uint32_t func)
void	setPciIdentifiers (uint8_t classCode, uint8_t subclassCode, uint16_t vendorId, uint16_t deviceId, uint8_t progIf)
void	setPciConfigHeader (const PciBus::ConfigSpace &space)
PciBus::ConfigSpace	getPciConfigHeader () const
uint8_t	getPciClassCode ()
uint8_t	getPciSubclassCode ()
uint16_t	getPciVendorId ()
uint16_t	getPciDeviceId ()
uint8_t	getPciProgInterface ()
uint32_t	getPciBusPosition ()
uint32_t	getPciDevicePosition ()
uint32_t	getPciFunctionNumber ()
virtual Vector< Address * > &	addresses ()
virtual uintptr_t	getInterruptNumber ()
virtual void	setInterruptNumber (uintptr_t n)
void	addChild (Device *pDevice)
Device *	getChild (size_t n)
size_t	getNumChildren ()
void	removeChild (size_t n)
void	removeChild (Device *d)
void	replaceChild (Device *src, Device *dest)

Private Attributes
String	m_Type
uint64_t	m_Start
uint64_t	m_Length
bool	m_bAligned

Additional Inherited Members
Public Types inherited from Disk
enum	SubType { ATA = 0, ATAPI }
Public Types inherited from Device
enum	Type {   Generic, Root, Disk, Bus,   Display, Network, Sound, Console,   Mouse, Controller, UsbController, UsbGeneric,   UsbContainer }
typedef Device *(*	Callback) (Device *)
Static Public Member Functions inherited from Device
static void	foreach (Callback callback, Device *root=0)
template<class F , class... Args>
static void	foreach (pedigree_std::Callable< F > &callback, Device *root, Args...args)
static void	addToRoot (Device *device)
static void	searchByVendorId (uint16_t vendorId, void(*callback)(Device *), Device *root=0)
static void	searchByVendorIdAndDeviceId (uint16_t vendorId, uint16_t deviceId, void(*callback)(Device *), Device *root=0)
static void	searchByClass (uint16_t classCode, void(*callback)(Device *), Device *root=0)
static void	searchByClassAndSubclass (uint16_t classCode, uint16_t subclassCode, void(*callback)(Device *), Device *root=0)
static void	searchByClassSubclassAndProgInterface (uint16_t classCode, uint16_t subclassCode, uint8_t progInterface, void(*callback)(Device *), Device *root=0)
Protected Member Functions inherited from Device
	NOT_COPYABLE_OR_ASSIGNABLE (Device)
Static Protected Member Functions inherited from Device
static Device &	root ()
Protected Attributes inherited from Device
Vector< Address * >	m_Addresses
Vector< Device * >	m_Children
Device *	m_pParent
uintptr_t	m_InterruptNumber
String	m_SpecificType
PciBus::ConfigSpace	m_ConfigHeader
uint8_t	m_ClassCode
uint8_t	m_SubclassCode
uint16_t	m_VendorId
uint16_t	m_DeviceId
uint8_t	m_ProgInterface
uint32_t	m_PciBusPos
uint32_t	m_PciDevicePos
uint32_t	m_PciFunctionNum
Static Protected Attributes inherited from Device
static Device	m_Root
static Mutex	m_TreeLock

Detailed Description

A partition is a chunk of disk.

Definition at line 31 of file Partition.h.

Member Function Documentation

virtual void Partition::dump ( String &  str )

inlinevirtual

Dumps a textual representation of the device into the given string.

Reimplemented from Disk.

Definition at line 45 of file Partition.h.

virtual size_t Partition::getBlockSize ( ) const

inlinevirtual

Gets the block size of the disk.

This is the native block size with which all reads and writes are performed, regardless of how much data is available to be read/written.

Reimplemented from Disk.

Definition at line 103 of file Partition.h.

References Disk::getBlockSize(), Device::getParent(), and getStart().

uint64_t Partition::getLength ( ) const

inline

Returns the length of this partition.

Definition at line 113 of file Partition.h.

Referenced by getSize().

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virtual void Partition::getName ( String &  str )

inlinevirtual

Stores the device's name in str.

Reimplemented from Disk.

Definition at line 37 of file Partition.h.

String Partition::getPartitionType ( )

inline

Returns a string giving the type of the partition.

Definition at line 119 of file Partition.h.

virtual size_t Partition::getSize ( ) const

inlinevirtual

Gets the size of the disk.

This is the size in bytes of the disk. Reads or writes beyond this size will fail.

Reimplemented from Disk.

Definition at line 98 of file Partition.h.

References getLength().

uint64_t Partition::getStart

(

)

Returns the first byte of the parent disk that is in this partition.

Definition at line 32 of file Partition.cc.

Referenced by getBlockSize().

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virtual uintptr_t Partition::read ( uint64_t  location )

inlinevirtual

Read from location on disk and return a pointer to it. location must be 512 byte aligned. The pointer returned is within a page of cache that maps to 4096 bytes of disk area.

Note

If the Disk is backed by a Cache, the buffer returned should have its refcount incremented by one by a successful run of read(). Use unpin() to indicate you no longer care about the buffer.

Parameters

location

The offset from the start of the device, in bytes, to start the read, must be multiple of 512.

Returns

Pointer to writable area of memory containing the data. If the data is written, the page is marked as dirty and may be written back to disk at any time (or forced with write() or flush() ).

Reimplemented from Disk.

Definition at line 56 of file Partition.h.

References Disk::align(), Device::getParent(), and Disk::read().

virtual void Partition::write ( uint64_t  location )

inlinevirtual

This function schedules a cache writeback of the given location. The data to be written back is fetched from the cache (pointer returned by read() ).

Parameters

location

The offset from the start of the device, in bytes, to start the write. Must be 512byte aligned.

Reimplemented from Disk.

Definition at line 77 of file Partition.h.

References Disk::align(), Device::getParent(), and Disk::write().

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

• Partition.h
• Partition.cc