problem with ZwQueryDirectoryFile

at a certain point it returns STATUS_PENDING,i can retry the call
but it still continues returning that error,forever

i always set to NULL the second parameter,that is supposed to be an OPTIONAL HANDLE to an Event

Code:

---


// hDir is a valid handle to a directory,obtained via CreateFile with
// FILE_FLAG_BACKUP_SEMANTICS
// pNames is a buffer,and uBufSize its size

int ret = NtQueryDirectoryFile(hDir,NULL,NULL,NULL,&IO,pNames,uBufSize,FileNamesInformation,FALSE,NULL,TRUE);

---

perhaps i have to pass a non-NULL value as the second
parameter, which is an handle to an event,
and then wait for it to happen...but how i create it?

You can create your own event HANDLE using CreateEvent. You can then pass it to your function and wait for the event to be signalled with WaitForSingleObject.

Pseudo Code:

HANDLE hEvent = CreateEvent( ... );

int ret = NtQueryDirectoryFile(hDir,hEvent,NULL,NULL,&IO,pNa mes,uBufSize,FileNamesInformation,FALSE,NULL,TRUE) ;

WaitForSingleObject( hEvent, INFINITE );