Class FileSystem

java.lang.Object
  |
  +--FileSystemAbstract
        |
        +--FileSystem

class FileSystem

extends FileSystemAbstract

Field Summary

protected DirectoryBlock	db
Disk	disk
protected int	f_index
protected java.lang.String	fname

Constructor Summary

FileSystem()

Method Summary

short	allocBlocks(int num_blocks)
void	append(java.lang.String name, byte[] buf, int bufLen)
private void	appendBase(java.lang.String name, byte[] buf, int bufLen)
(package private) void	checkDir(short blockPtr, int[] dir, int[] data)
protected void	checkDirectoryName(java.lang.String name)
(package private) void	checkFile(short blockPtr, int[] data)
void	create(java.lang.String name)
void	createDir(java.lang.String name)
void	deallocBlocks(short blockPtr)
void	delete(java.lang.String name)
void	deleteDir(java.lang.String name)
void	diskCheck()
boolean	existsDirectory(java.lang.String name)
boolean	existsFile(java.lang.String name)
void	fileAppend(java.lang.String fname1, java.lang.String fname2)
void	fileCopy(java.lang.String fname1, java.lang.String fname2)
void	fileExport(java.lang.String fname1, java.lang.String fname2)
void	fileImport(java.lang.String fname1, java.lang.String fname2)
private byte[]	fileRead(Inode inode, int fstart, int flength)
DirectoryBlock	findDirectory(java.lang.String name)
void	format()
void	getFileRef(java.lang.String name)
private DirectoryBlock	GetSubDir(DirectoryBlock db, int index)
void	list(java.lang.String name)
void	move(java.lang.String name1, java.lang.String name2)
byte[]	read(java.lang.String name)
byte[]	read(java.lang.String name, int offset, int length)
(package private) void	recDirList(int blocknum, java.lang.String parent)
void	tree()

Methods inherited from class java.lang.Object

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

Field Detail

f_index

protected int f_index

db

protected DirectoryBlock db

fname

protected java.lang.String fname

disk

public Disk disk

Constructor Detail

FileSystem

public FileSystem()

Method Detail

findDirectory

public DirectoryBlock findDirectory(java.lang.String name)
                             throws FileSystemException

Specified by:

findDirectory in class FileSystemAbstract

FileSystemException

GetSubDir

private DirectoryBlock GetSubDir(DirectoryBlock db,
                                 int index)
                          throws FileSystemException

FileSystemException

list

public void list(java.lang.String name)
          throws FileSystemException

Specified by:

list in class FileSystemAbstract

FileSystemException

createDir

public void createDir(java.lang.String name)
               throws FileSystemException

Specified by:

createDir in class FileSystemAbstract

FileSystemException

deleteDir

public void deleteDir(java.lang.String name)
               throws FileSystemException

Specified by:

deleteDir in class FileSystemAbstract

FileSystemException

create

public void create(java.lang.String name)
            throws FileSystemException

Specified by:

create in class FileSystemAbstract

FileSystemException

delete

public void delete(java.lang.String name)
            throws FileSystemException

Specified by:

delete in class FileSystemAbstract

FileSystemException

fileRead

private byte[] fileRead(Inode inode,
                        int fstart,
                        int flength)
                 throws FileSystemException

FileSystemException

read

public byte[] read(java.lang.String name)
            throws FileSystemException

Specified by:

read in class FileSystemAbstract

FileSystemException

move

public void move(java.lang.String name1,
                 java.lang.String name2)
          throws FileSystemException

Specified by:

move in class FileSystemAbstract

FileSystemException

read

public byte[] read(java.lang.String name,
                   int offset,
                   int length)
            throws FileSystemException

Specified by:

read in class FileSystemAbstract

FileSystemException

append

public void append(java.lang.String name,
                   byte[] buf,
                   int bufLen)
            throws FileSystemException

Specified by:

append in class FileSystemAbstract

FileSystemException

getFileRef

public void getFileRef(java.lang.String name)
                throws FileSystemException

Specified by:

getFileRef in class FileSystemAbstract

FileSystemException

appendBase

private void appendBase(java.lang.String name,
                        byte[] buf,
                        int bufLen)
                 throws FileSystemException

FileSystemException

existsFile

public boolean existsFile(java.lang.String name)
                   throws FileSystemException

Specified by:

existsFile in class FileSystemAbstract

FileSystemException

existsDirectory

public boolean existsDirectory(java.lang.String name)
                        throws FileSystemException

Specified by:

existsDirectory in class FileSystemAbstract

FileSystemException

fileCopy

public void fileCopy(java.lang.String fname1,
                     java.lang.String fname2)
              throws FileSystemException

Specified by:

fileCopy in class FileSystemAbstract

FileSystemException

fileAppend

public void fileAppend(java.lang.String fname1,
                       java.lang.String fname2)
                throws FileSystemException

Specified by:

fileAppend in class FileSystemAbstract

FileSystemException

deallocBlocks

public void deallocBlocks(short blockPtr)
                   throws FileSystemException

Specified by:

deallocBlocks in class FileSystemAbstract

FileSystemException

allocBlocks

public short allocBlocks(int num_blocks)
                  throws FileSystemException

Specified by:

allocBlocks in class FileSystemAbstract

FileSystemException

recDirList

void recDirList(int blocknum,
                java.lang.String parent)
          throws FileSystemException

FileSystemException

tree

public void tree()
          throws FileSystemException

Specified by:

tree in class FileSystemAbstract

FileSystemException

format

public final void format()
                  throws FileSystemException

FileSystemException

checkDirectoryName

protected final void checkDirectoryName(java.lang.String name)
                                 throws FileSystemException

FileSystemException

fileImport

public final void fileImport(java.lang.String fname1,
                             java.lang.String fname2)
                      throws FileSystemException

FileSystemException

fileExport

public final void fileExport(java.lang.String fname1,
                             java.lang.String fname2)
                      throws FileSystemException

FileSystemException

checkFile

void checkFile(short blockPtr,
               int[] data)
         throws FileSystemException

FileSystemException

checkDir

void checkDir(short blockPtr,
              int[] dir,
              int[] data)
        throws FileSystemException

FileSystemException

diskCheck

public final void diskCheck()
                     throws FileSystemException

FileSystemException