Package ghidra.pcode.emu.sys

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 java.lang.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:

    • 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[]>