RawQueryFsSizeInfo

NTSTATUS __stdcall RawQueryFsSizeInfo(
        _VCB *Vcb,
        _FILE_OBJECT *FileObject,
        _FILE_FS_SIZE_INFORMATION *Buffer,
        UINT64 *Length){
  bool v5; 
  char v10; 
  _DEVICE_OBJECT *v11; 
  PIRP *v12; 
  int Status; 
  bool v14; 
  _LARGE_INTEGER v15; 
  PIRP *v16; 
  NTSTATUS v17; 
  PIRP *v18; 
  NTSTATUS v19; 
  unsigned __int64 v20; 
  LARGE_INTEGER v21; 
  __int128 Object; 
  __int64 v23; 
  _IO_STATUS_BLOCK IoStatusBlock; 
  _LARGE_INTEGER OutputBuffer; 
  _LARGE_INTEGER Timeout[2]; 
  __int64 v27; 
  _LARGE_INTEGER v28; 
  _LARGE_INTEGER v29; 
  __int128 v30; 

  v28.QuadPart = 0i64;
  OutputBuffer.QuadPart = 0i64;
  v5 = *(_DWORD *)Length < 0x18u;
  v23 = 0i64;
  v27 = 0i64;
  Object = 0i64;
  IoStatusBlock = 0i64;
  *(_OWORD *)&Timeout[0].anonymous_0.LowPart = 0i64;
  v30 = 0i64;
  if( v5 )
    return -2147483643;
  RawBeginOperation((INT64)Vcb, (INT64)FileObject);
  if( !v10 )
    return -1073741202;
  *(_OWORD *)&Buffer->TotalAllocationUnits.anonymous_0.LowPart = 0i64;
  *(_QWORD *)&Buffer->SectorsPerAllocationUnit = 0i64;
  KeInitializeEvent((INT64)&Object, 0, 0);
  v11 = *(_DEVICE_OBJECT **)(*((_QWORD *)Vcb + 23) + 16i64);
  v12 = IoBuildDeviceIoControlRequest(0x70000u, v11, 0i64, 0, Timeout, 0x18u, 0, (PKEVENT)&Object, &IoStatusBlock);
  if( !v12 )
    goto LABEL_25;
  Status = IofCallDriver((UINT64)v11, (UINT64)v12);
  if( Status == 259 )
  {
    KeWaitForSingleObject((UINT64)&Object, 0, 0, 0, 0i64);
    Status = IoStatusBlock.Status;
  }
  if( Status >= 0 )
  {
    if( (v11->Characteristics & 4) != 0 )
    {
      v14 = 0;
      v15.QuadPart = 0i64;
      v29.QuadPart = 0i64;
LABEL_21:
      v20 = HIDWORD(v27);
      Buffer->BytesPerSector = HIDWORD(v27);
      Buffer->SectorsPerAllocationUnit = 1;
      if( v14 )
        v21.QuadPart = v15.QuadPart / v20;
      else
        v21.QuadPart = Timeout[0].QuadPart * Timeout[1].anonymous_0.HighPart * (int)v27;
      Buffer->AvailableAllocationUnits = v21;
      Buffer->TotalAllocationUnits = v21;
      *(_DWORD *)Length -= 24;
      Status = 0;
      goto LABEL_26;
    }
    KeResetEvent((_KEVENT *)&Object);
    v16 = IoBuildDeviceIoControlRequest(0x7405Cu, v11, 0i64, 0, &OutputBuffer, 8u, 0, (PKEVENT)&Object, &IoStatusBlock);
    if( v16 )
    {
      v17 = IofCallDriver((UINT64)v11, (UINT64)v16);
      if( v17 == 259 )
      {
        KeWaitForSingleObject((UINT64)&Object, 0, 0, 0, 0i64);
        v17 = IoStatusBlock.Status;
      }
      v15 = OutputBuffer;
      v29 = OutputBuffer;
      if( v17 >= 0 )
      {
        v14 = 1;
        goto LABEL_21;
      }
      KeResetEvent((_KEVENT *)&Object);
      v18 = IoBuildDeviceIoControlRequest(0x74004u, v11, 0i64, 0, &v28, 0x20u, 0, (PKEVENT)&Object, &IoStatusBlock);
      if( v18 )
      {
        v19 = IofCallDriver((UINT64)v11, (UINT64)v18);
        if( v19 == 259 )
        {
          KeWaitForSingleObject((UINT64)&Object, 0, 0, 0, 0i64);
          v19 = IoStatusBlock.Status;
        }
        v15 = v29;
        v14 = v19 >= 0;
        goto LABEL_21;
      }
    }
LABEL_25:
    Status = -1073741670;
    goto LABEL_26;
  }
  *(_DWORD *)Length = 0;
LABEL_26:
  RawEndOperation(Vcb, FileObject);
  return Status;
}

Referenced by: