com.github.mjdev.libaums.fs.fat32

Class Fat32FileSystem

java.lang.Object

com.github.mjdev.libaums.fs.fat32.Fat32FileSystem

All Implemented Interfaces:

FileSystem

public class Fat32FileSystem
extends java.lang.Object
implements FileSystem

This class represents the FAT32 file system and is responsible for setting the FAT32 file system up and extracting the volume label and the root directory.

Method Summary

Modifier and Type	Method and Description
long	getCapacity()
int	getChunkSize()
long	getFreeSpace() ATTENTION: This value can be inaccurate, depending on actual file system and certain file system specific properties.
long	getOccupiedSpace() ATTENTION: This value can be inaccurate, depending on actual file system and certain file system specific properties.
UsbFile	getRootDirectory() This method returns the root directory of the file system.
java.lang.String	getVolumeLabel() This method returns the name of the volume which is mostly saved in the file system.
static Fat32FileSystem	read(BlockDeviceDriver blockDevice) This method constructs a FAT32 file system for the given block device.

Methods inherited from class java.lang.Object

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

Method Detail

read

public static Fat32FileSystem read(BlockDeviceDriver blockDevice)
                            throws java.io.IOException

This method constructs a FAT32 file system for the given block device. There are no further checks if the block device actually represents a valid FAT32 file system. That means it must be ensured that the device actually holds a FAT32 file system in advance!

Parameters:

blockDevice - The block device the FAT32 file system is located.

Throws:

java.io.IOException - If reading from the device fails.

getRootDirectory

public UsbFile getRootDirectory()

Description copied from interface: FileSystem

This method returns the root directory of the file system.

Specified by:

getRootDirectory in interface FileSystem

Returns:

The root directory of the file system.

getVolumeLabel

public java.lang.String getVolumeLabel()

Description copied from interface: FileSystem

This method returns the name of the volume which is mostly saved in the file system.

In Windows the name of a volume is shown in the explorer before the drive letter.

Specified by:

getVolumeLabel in interface FileSystem

Returns:

getCapacity

public long getCapacity()

Specified by:

getCapacity in interface FileSystem

Returns:

The total "capacity" of the file system in bytes.

getOccupiedSpace

public long getOccupiedSpace()

Description copied from interface: FileSystem

ATTENTION: This value can be inaccurate, depending on actual file system and certain file system specific properties. Use as an estimation.

Specified by:

getOccupiedSpace in interface FileSystem

Returns:

Occupied space in the file system in bytes (estimate).

getFreeSpace

public long getFreeSpace()

Description copied from interface: FileSystem

ATTENTION: This value can be inaccurate, depending on actual file system and certain file system specific properties. Use as an estimation.

Specified by:

getFreeSpace in interface FileSystem

Returns:

Free space in the file system in bytes (estimate).

getChunkSize

public int getChunkSize()

Specified by:

getChunkSize in interface FileSystem

Returns:

returns the optimal chuck size in bytes (you should read and write in multiples of that)