NTSTATUS __stdcall PiDrvDbUnmountNode(PCWSTR SourceString){
int Node;
_UNICODE_STRING DestinationString;
DestinationString = 0i64;
RtlInitUnicodeString(&DestinationString, SourceString);
Node = PiDrvDbFindNode(&DestinationString);
if( Node >= 0 )
{
if( (MEMORY[0x40] & 1) != 0 )
return -1073741790;
else
return(MEMORY[0x40] & 0x10) != 0 ? -1073741637 : -1073741790;
}
return Node;
}