Class BytesEmuFileContents

java.lang.Object

ghidra.pcode.emu.sys.BytesEmuFileContents

All Implemented Interfaces:

EmuFileContents<byte[]>

public class BytesEmuFileContents
extends Object
implements EmuFileContents<byte[]>

A concrete in-memory bytes store for simulated file contents

Note that currently, the total contents cannot exceed a Java array, so the file must remain less than 2GB in size.

Field Summary

Fields

Modifier and Type	Field	Description
protected byte[]	content
protected static final int	INIT_CONTENT_SIZE

Constructor Summary

Constructors

Constructor	Description
BytesEmuFileContents()

Method Summary

Modifier and Type	Method	Description
long	read(long offset, byte[] buf, long fileSize)	Copy values from the file into the given buffer
void	truncate()	Erase the contents
long	write(long offset, byte[] buf, long curSize)	Write values from the given buffer into the file

Methods inherited from class Object

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

Field Details

INIT_CONTENT_SIZE

protected static final int INIT_CONTENT_SIZE

See Also:

• Constant Field Values

content

protected byte[] content

Constructor Details

BytesEmuFileContents

public BytesEmuFileContents()

Method Details

read

public long read(long offset,
 byte[] buf,
 long fileSize)

Description copied from interface: EmuFileContents

Copy values from the file into the given buffer

Specified by:

read in interface EmuFileContents<byte[]>

Parameters:

offset - the offset in the file to read

buf - the destination buffer, whose size must be known

fileSize - the size of the file

Returns:

the number of bytes (not necessarily concrete) read

write

public long write(long offset,
 byte[] buf,
 long curSize)

Description copied from interface: EmuFileContents

Write values from the given buffer into the file

Specified by:

write in interface EmuFileContents<byte[]>

Parameters:

offset - the offset in the file to write

buf - the source buffer, whose size must be known

curSize - the current size of the file

Returns:

the number of bytes (not necessarily concrete) written

truncate

public void truncate()

Description copied from interface: EmuFileContents

Erase the contents

Note that the file's size will be set to 0, so actual erasure of the contents may not be necessary, but if the contents are expensive to store, they ought to be disposed.

Specified by:

truncate in interface EmuFileContents<byte[]>