Class Ext2File

java.lang.Object

Ext2File

public class Ext2File
extends java.lang.Object

This class provides a way to readBytes bytes in a Randomly Accessed File, either from a given offset or from the current file pointer

Author:

Petros Soutzis, 2017-19

Field Summary

Fields

Modifier and Type	Field and Description
private java.io.RandomAccessFile	raf

Constructor Summary

Constructors

Constructor and Description
Ext2File(Volume vol) Constructor of Ext2File class.

Method Summary

Modifier and Type	Method and Description
(package private) static java.lang.String	getFileSystemName()
(package private) byte[]	readBytes(long startByte, long length) Reads at most length bytes starting at byte offset startByte from start of file.

Methods inherited from class java.lang.Object

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

Field Detail

raf

private java.io.RandomAccessFile raf

Constructor Detail

Ext2File

public Ext2File(Volume vol)

Constructor of Ext2File class. Will readBytes the ext2fs image and return the bytes that were readBytes.

Parameters:

vol - is the Volume that the Ext2File will readBytes bytes from.

Method Detail

readBytes

byte[] readBytes(long startByte,
                 long length)
          throws java.io.IOException

Reads at most length bytes starting at byte offset startByte from start of file. Byte 0 is the first byte in the file. StartByte must be such that, 0 less or equal than, startByte less than file.size or an exception should be raised.

Parameters:

startByte - the offset from which the file will start reading from

length - the size that the byte-array will have

Returns:

the byte array that the random access file readBytes from the volume

Throws:

java.io.IOException - is thrown when an error happens during the reading of the RAF

getFileSystemName

static java.lang.String getFileSystemName()

Returns:

The name (or pathname) of the disk to read (filesystem image).