Problem: Watching Directories from WinNT+

[Claus Faber]

Hi there,

I'm trying to watch the changes in a directory from WinNT (XP as a matter of
fact). It works fine watching directories on a remote WinNT computer but
doesn't with a remote Samba Server:

When a change in the watched directory occurs, ReadDirectoryChangesW()
returns with error 59 (=ERROR_UNEXP_NET_ERR). If a try the same approach
with async communication ReadDirectoryChangesW() works fine but
GetOverlappedResult() returns with the same error message. Looks like that
Samba isn't sending a proper return packet.

I really do appreciate any feedback on this problem,

Thanks in advance,

Claus


Here's the code running on my WinNT machine:

 if(!(hFile=CreateFile(
       "\\\\Mephisto\\test",
       FILE_LIST_DIRECTORY,
       FILE_SHARE_READ
      | FILE_SHARE_WRITE
      | FILE_SHARE_DELETE,
       0,
       OPEN_EXISTING,
       FILE_FLAG_BACKUP_SEMANTICS,
       NULL      ))){
   // failed
   dwErr = ::GetLastError();
 }else{
  while(1){
   if(!ReadDirectoryChangesW( hFile,
          byBuffer,
         BUFSIZE,
         FALSE,
         FILE_NOTIFY_CHANGE_FILE_NAME,
         &dwNbBytes,
         0,          0
         )){
    // error
    dwErr=::GetLastError();
    CloseHandle(hFile);
    hFile=0;
    break;
   }else{
    dwErr=0;
   }
  } // wend
 }