I try to convert VB.NET source code to C. It's purpose is to show me if my hard disk is NTFS.
Supposedly reads MFT and can compare the third byte, if is 78 decimal (N) and 84 (T) and so on...returns 0 for "true", but I can't do it; my code it doesn't work.
How can I fix it?
VB.net:
Public Function IsNFTSDrive(ByVal strDrive As String) As Boolean
Dim Hnd As Integer, nRead As Integer
Dim ret As UInt32
Dim Buffer(1024) As Byte
Hnd = CreateFile("\\.\" & Mid(strDrive, 1, 2), GENERIC_READ Or GENERIC_WRITE, FILE_SHARE_READ Or FILE_SHARE_WRITE, _
Nothing, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL Or FILE_FLAG_OVERLAPPED, IntPtr.Zero)
If (Hnd <> INVALID_HANDLE_VALUE) Then
ret = ReadFile(Hnd, Buffer, 1024, nRead, New System.Threading.NativeOverlapped)
Else
Return False
End If
If ret = 0 Then
ret = WaitForSingleObject(Hnd, INFINITE)
Select Case ret
Case WAIT_OBJECT_0
Case WAIT_TIMEOUT
End Select
Else
Return False
End If
CloseHandle(Hnd)
Return Buffer(3) = 78 And Buffer(4) = 84 And Buffer(5) = 70 And Buffer(6) = 83
End Function
C:
#include <Windows.h>
#include <winioctl.h>
#include <stdio.h>
#include <stdlib.h>
#define zwpath L"\\\\.\\PhysicalDrive0"
int main(int argc, char *argv[]){
HANDLE hDevice;
OVERLAPPED overlapped;
BYTE buff[1024];
DWORD numerobyte = 0;
UINT32 ret;
ZeroMemory(&overlapped, sizeof(OVERLAPPED));
hDevice = CreateFileW(zwpath, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL);
if(hDevice != INVALID_HANDLE_VALUE){
ret = ReadFile(hDevice, buff, 1024, &numerobyte, &overlapped);
}else
{
return NULL;
}
if(ret == 0){
ret = WaitForSingleObject(hDevice,INFINITE );
switch (ret)
{
case WAIT_OBJECT_0:break;
case WAIT_TIMEOUT:break;
default:
break;
}
}
else
{
return NULL;
}
CloseHandle(hDevice);
if(buff[3] == 'N'){
printf("N");
}
getchar();
}
EDIT
I change the code but nothing
I tried with "\.\C:" like MSDN example, but nothing :(
and the error begins in "if(buff[3] == 'N')", I don't know if ReadFile is failing or is the "if"?
The Mid is for the Drive.. "C:\" or "C:" like "\.\C:" or "\.\C:\"
