_TXN_PARAMETER_BLOCK *__stdcall IoGetTransactionParameterBlock(_FILE_OBJECT *FileObject){
void *FileObjectExtension;
FileObjectExtension = FileObject->FileObjectExtension;
if( !FileObjectExtension || FileObjectExtension == (void *)IopRevocationExtension )
return 0i64;
else
return(_TXN_PARAMETER_BLOCK *)*((_QWORD *)FileObjectExtension + 1);
}