Résultats de recherche : libyal

VirtualBox image (VDI) proxy for ImDisk

 Uncategorized  No Responses »
Juil 252019
 

I had done a few proxies for ImDisk in the past based on the libyal libraries (vmdk, qcow, vhd, ewf).

This time, as the VDI image format is quite simple, I made my own proxy for VDI images.

Imdisk + Discutils could achieve the same except that discutils requires .Net 4.0 which is not always available.

As always the command line :

« server » -> devio –dll=proxy.dll;dllopen shm:test_proxy c:\temp\freedos.vdi
« client » -> imdisk -a -t proxy -o shm -o ro -f test_proxy -m x:
Use the start command in front of devio if you want to stuff it all in one batch.

Download/Discuss here.

VHDI proxy for Imdisk

 Uncategorized  No Responses »
Déc 162018
 

In a previous article, I showed how to setup a « proxy » for ImDisk thru devio to mount an EWF file.

This time, lets do it with a VHDI file (using external libyal library).

The command lines for the proxy and ImDisk are below :

To launch the proxy : devio –dll=proxy.dll;dllopen shm:test_proxy c:\test.vhd.

To use the proxy from ImDisk : imdisk -a -t proxy -o shm -o ro -f test_proxy -m Z: .

proxy_VHDI

VMDK to RAW converter

 Uncategorized  No Responses »
Déc 282016
 

Been a while since last article.

A quick one to post a tool I have been using lately to quickly convert VMDK to raw disks.
Indeed it is sometimes easier/quicker to install an operating system in a virtual environement but afterwards you may want to convert the vmware disk (vmdk) to a raw disk so that you can write it to another physical media (usb, hard drive, etc).

Thanks to libvmdk, a library written by Joachim Metz, it is easy to write a quick graphical frontend that will read a vmdk and write it back to a raw image.

VMDK2RAW can be downloaded here.

Erwan

 Posted by at 0 h 42 min  Tagged with:

QCOW proxy for ImDisk

 delphi  No Responses »
Août 012014
 

In a previous article, I showed how to setup a « proxy » for ImDisk thru devio to mount an EWF file.

This time, lets do it with a QCOW file (using external libyal library).

The command lines for the proxy and ImDisk are below :

devio --dll=proxy.dll;dllopen shm:test_proxy c:\test.qcow
imdisk -a -t proxy -o shm -o ro -f test_proxy -m Z:

Find the proxy here : PROXY_QCOW .

VMDK proxy for ImDisk

 delphi  No Responses »
Juil 212014
 

In a previous article, I showed how to setup a « proxy » for ImDisk thru devio to mount an EWF file.

This time, lets do it with a VMDK file (using external libyal library).

The command lines for the proxy and ImDisk are below :

devio --dll=proxy.dll;dllopen shm:test_proxy c:\test.vmdk
imdisk -a -t proxy -o shm -o ro -f test_proxy -m Z:

See below devio in action :
imdisk_vmdk

Find the proxy here : proxy_VMDK .

EWF Proxy for ImDisk

 delphi  3 Responses »
Juil 202014
 

In a previous article, I have shared a delphi unit for libewf.

Now lets code a proxy for ImDisk using that external libyal library to mount an EWF file.

I initially used this template from reboot.pro and came with the below basic delphi unit.

Once I had done that, it was pretty easy to fill in the missing parts to mount and EWF reusing my previous libewf delphi unit.
See code attached.proxy_EWF

library proxy;

uses
  SysUtils,
  Classes,windows;

{$R *.res}

type
  dllread_proc = function (handle:thandle; buf:pointer; size:cardinal; offset:int64): integer; cdecl;
  dllwrite_proc = function (handle:thandle; buf:pointer; size:cardinal; offset:int64): integer; cdecl;
  dllclose_proc = function (handle:thandle): integer; cdecl;

var
file_handle:thandle;

function SetFilePointerEx (hFile: THandle; lDistanceToMove: int64; lpNewFilePointer: Pointer; dwMoveMethod: DWORD): BOOL; stdcall; external 'kernel32.dll';
function GetFileSizeEx(hFile: THandle; var lpFileSize: Int64): BOOL; stdcall; external 'kernel32.dll' name 'GetFileSizeEx';

function my_read_proc(handle:thandle; buf:pointer; size:cardinal; offset:int64): integer; cdecl;
var
bytes_read:cardinal;
begin
	writeln('Read request - size:'+inttostr(size)+' offset:'+inttostr(offset));
	SetFilePointerEx(handle, offset, nil, FILE_BEGIN);
	ReadFile(handle, buf^, size, bytes_read, nil);
	result:=bytes_read;
end;

function my_write_proc(handle:thandle; buf:pointer; size:cardinal; offset:int64): integer; cdecl;
var
bytes_written:cardinal;
begin
	writeln('Write request - size:'+inttostr(size)+' offset:'+inttostr(offset));
	SetFilePointerEx(handle, offset, nil, FILE_BEGIN);
	WriteFile(handle, buf^, size, bytes_written, nil);
	result:=bytes_written;
end;

function my_close_proc(handle:thandle): integer; cdecl;
begin
	writeln('Close request');
	CloseHandle(handle);
	result:=0;
end;

function dllopen(filename:pchar; read_only:integer; var dllread:dllread_proc; var dllwrite:dllwrite_proc; var dllclose:dllclose_proc; var size:int64):thandle;cdecl;
begin
	writeln('File to open: '+filename);

	dllread := my_read_proc;
	dllwrite := my_write_proc;
	dllclose := my_close_proc;

	file_handle := CreateFile(filename, GENERIC_READ or GENERIC_WRITE, FILE_SHARE_READ, nil, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
	GetFileSizeEx(file_handle, size);

	result:=file_handle;
end;

exports
  dllopen index 1;

begin
end.

The command lines for the proxy and ImDisk are below :

devio --dll=proxy.dll;dllopen shm:test_proxy c:\test.vmdk
imdisk -a -t proxy -o shm -o ro -f test_proxy -m Z:

Devio in action :
imdisk_ewf