rossi.fstools.fs.reiserfs
Class ReiserSuperBlock

java.lang.Object
  rossi.fstools.fs.reiserfs.ReiserSuperBlock

All Implemented Interfaces:

DiskStructure, SuperBlock

public class ReiserSuperBlock

extends java.lang.Object

implements SuperBlock

Representation of ReiserFS superblock.

  On disk the superblock looks like this:

        31        24        16       8       0
        --------------------------------------
  0000  |        Block Count                 |
        --------------------------------------
  0004  |        Free Blocks                 |
        --------------------------------------
  0008  |        Root Block                  |
        --------------------------------------
  000C  |        Journal Block               |
        --------------------------------------
  0010  |        Journal Device              |
        --------------------------------------
  0014  |        Orig Journal Size           |
        --------------------------------------
  0018  |        Journal Trans Max           |
        --------------------------------------
  001C  |        Journal Block Count         |
        --------------------------------------
  0020  |        Journal Max Batch           |
        --------------------------------------
  0024  |        Journal Commit Age          |
        --------------------------------------
  0028  |        Journal Trans Age           |
        --------------------------------------
  002C  |     Block Size    | Old Max Size   |
        --------------------------------------
  0030  |     Curr Size     |   State        |
        --------------------------------------
  0034  |       Magic                        |
        --------------------------------------
  0038  |       Magic  (cont)                |
        --------------------------------------
  003C  |       Magic  (cont)                |
        --------------------------------------
  0040  |             Hash Func              | For V1, this is omitted
        --------------------------------------
  0044  |     Tree Height   | Bitmap Blocks  |
        --------------------------------------
  0048  |     Version       |  Reserved      | Remaining fields omitted in V1
        --------------------------------------
  004C  |              Inode Gen             | 
        --------------------------------------
  0050  |               Flags                |  
        --------------------------------------
  0054  |     Filesystem Unique Id           |  
        --------------------------------------
  0058  |     Filesystem Unique Id           |  
        --------------------------------------
  005C  |     Filesystem Unique Id           |  
        --------------------------------------
  0060` |     Filesystem Unique Id           |  
        --------------------------------------
  0064  |        Volume Label                |  
        --------------------------------------
  0068  |        Volume Label                |  
        --------------------------------------
  006C  |        Volume Label                |  
        --------------------------------------
  0070  |        Volume Label                |  
        --------------------------------------

 

Field Summary

protected int	bitmapBlocks
protected long	blockCount
protected int	blockSize
protected int	currSize
protected long	flags
protected long	freeBlocks
protected long	hashFunc
protected long	inodeGen
protected long	journalBlock
protected long	journalBlockCount
protected long	journalCommitAge
protected long	journalDev
protected long	journalMaxBatch
protected long	journalTransAge
protected long	journalTransMax
protected byte[]	label
protected byte[]	magic
protected int	oldMaxSize
protected long	origJournalSize
protected int	reserved
protected long	rootBlock
protected int	state
protected int	treeHeight
protected byte[]	uniqueID
protected int	version

Constructor Summary

ReiserSuperBlock()

Method Summary

int	getBitmapBlocks()
long	getBlockCount()
int	getBlockSize()
int	getCurrSize()
int	getDataSize() Get the size in bytes of the structure.
long	getFlags()
long	getFreeBlocks()
long	getHashFunc()
long	getInodeGen()
long	getJournalBlock()
long	getJournalBlockCount()
long	getJournalCommitAge()
long	getJournalDev()
long	getJournalMaxBatch()
long	getJournalTransAge()
long	getJournalTransMax()
byte[]	getLabel()
byte[]	getMagic()
int	getOldMaxSize()
long	getOrigJournalSize()
int	getReserved()
long	getRootBlock()
int	getState()
int	getTreeHeight()
byte[]	getUniqueID()
int	getVersion()
void	loadFromBuffer(byte[] buffer, int offset) Load from a buffer containint the superblock.
void	setBitmapBlocks(int aBitmapBlocks)
void	setBlockCount(long aBlockCount)
void	setBlockSize(int aBlockSize)
void	setCurrSize(int aCurrSize)
void	setFlags(long aFlags)
void	setFreeBlocks(long aFreeBlocks)
void	setHashFunc(long aHashFunc)
void	setInodeGen(long aInodeGen)
void	setJournalBlock(long aJournalBlock)
void	setJournalBlockCount(long aJournalBlockCount)
void	setJournalCommitAge(long aJournalCommitAge)
void	setJournalDev(long aJournalDev)
void	setJournalMaxBatch(long aJournalMaxBatch)
void	setJournalTransAge(long aJournalTransAge)
void	setJournalTransMax(long aJournalTransMax)
void	setLabel(byte[] aLabel)
void	setMagic(byte[] aMagic)
void	setOldMaxSize(int aOldMaxSize)
void	setOrigJournalSize(long aOrigJournalSize)
void	setReserved(int aReserved)
void	setRootBlock(long aRootBlock)
void	setState(int aState)
void	setTreeHeight(int aTreeHeight)
void	setUniqueID(byte[] aUniqueID)
void	setVersion(int aVersion)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

blockCount

protected long blockCount

freeBlocks

protected long freeBlocks

rootBlock

protected long rootBlock

journalBlock

protected long journalBlock

journalDev

protected long journalDev

origJournalSize

protected long origJournalSize

journalTransMax

protected long journalTransMax

journalBlockCount

protected long journalBlockCount

journalMaxBatch

protected long journalMaxBatch

journalCommitAge

protected long journalCommitAge

journalTransAge

protected long journalTransAge

blockSize

protected int blockSize

oldMaxSize

protected int oldMaxSize

currSize

protected int currSize

state

protected int state

magic

protected byte[] magic

hashFunc

protected long hashFunc

treeHeight

protected int treeHeight

bitmapBlocks

protected int bitmapBlocks

version

protected int version

reserved

protected int reserved

inodeGen

protected long inodeGen

flags

protected long flags

uniqueID

protected byte[] uniqueID

label

protected byte[] label

Constructor Detail

ReiserSuperBlock

public ReiserSuperBlock()

Method Detail

getDataSize

public int getDataSize()

Description copied from interface: DiskStructure

Get the size in bytes of the structure. For variable length sturctures this may represent the minimum length rather than the actual length.

Specified by:

getDataSize in interface DiskStructure

Returns:

the size of the structure.

getBlockCount

public long getBlockCount()

setBlockCount

public void setBlockCount(long aBlockCount)

getFreeBlocks

public long getFreeBlocks()

setFreeBlocks

public void setFreeBlocks(long aFreeBlocks)

getRootBlock

public long getRootBlock()

setRootBlock

public void setRootBlock(long aRootBlock)

getJournalBlock

public long getJournalBlock()

setJournalBlock

public void setJournalBlock(long aJournalBlock)

getJournalDev

public long getJournalDev()

setJournalDev

public void setJournalDev(long aJournalDev)

getOrigJournalSize

public long getOrigJournalSize()

setOrigJournalSize

public void setOrigJournalSize(long aOrigJournalSize)

getJournalTransMax

public long getJournalTransMax()

setJournalTransMax

public void setJournalTransMax(long aJournalTransMax)

getJournalBlockCount

public long getJournalBlockCount()

setJournalBlockCount

public void setJournalBlockCount(long aJournalBlockCount)

getJournalMaxBatch

public long getJournalMaxBatch()

setJournalMaxBatch

public void setJournalMaxBatch(long aJournalMaxBatch)

getJournalCommitAge

public long getJournalCommitAge()

setJournalCommitAge

public void setJournalCommitAge(long aJournalCommitAge)

getJournalTransAge

public long getJournalTransAge()

setJournalTransAge

public void setJournalTransAge(long aJournalTransAge)

getBlockSize

public int getBlockSize()

setBlockSize

public void setBlockSize(int aBlockSize)

getOldMaxSize

public int getOldMaxSize()

setOldMaxSize

public void setOldMaxSize(int aOldMaxSize)

getCurrSize

public int getCurrSize()

setCurrSize

public void setCurrSize(int aCurrSize)

getState

public int getState()

setState

public void setState(int aState)

getMagic

public byte[] getMagic()

setMagic

public void setMagic(byte[] aMagic)

getHashFunc

public long getHashFunc()

setHashFunc

public void setHashFunc(long aHashFunc)

getTreeHeight

public int getTreeHeight()

setTreeHeight

public void setTreeHeight(int aTreeHeight)

getBitmapBlocks

public int getBitmapBlocks()

setBitmapBlocks

public void setBitmapBlocks(int aBitmapBlocks)

getVersion

public int getVersion()

setVersion

public void setVersion(int aVersion)

getReserved

public int getReserved()

setReserved

public void setReserved(int aReserved)

getInodeGen

public long getInodeGen()

setInodeGen

public void setInodeGen(long aInodeGen)

getFlags

public long getFlags()

setFlags

public void setFlags(long aFlags)

getUniqueID

public byte[] getUniqueID()

setUniqueID

public void setUniqueID(byte[] aUniqueID)

getLabel

public byte[] getLabel()

setLabel

public void setLabel(byte[] aLabel)

loadFromBuffer

public void loadFromBuffer(byte[] buffer,
                           int offset)
                    throws FsException

Load from a buffer containint the superblock. We assume that the superblock begins at the specified offset within the buffer

Specified by:

loadFromBuffer in interface DiskStructure

Parameters:

buffer - a byte[] containing data to be read in populating the object

offset - a int indicating the offset within the buffer to start parsing.

Throws:

FsException - if a parse error occurs.