HOWTO: ZwCreateFile on \device\atalkddp Requires Protocol #

ID: Q194635

The information in this article applies to:

Microsoft Win32 Device Driver Kit (DDK) for Windows NT, version 4.0

SUMMARY

A TDI Client Calling ZwCreateFile on \device\atalkddp must specify a protocol number.

MORE INFORMATION

Passing in \device\atalkddp to ZwCreateFile produces an error. You must specify a protocol number as follows:


   \device\atalkddp\0  for DDP protocol
   \device\atalkddp\2  for NBP protocol
   \device\atalkddp\3  for ATP protocol
   \device\atalkddp\7 for ADSP protocol

WinObj shows the device as \device\atalkddp. It is not trivial to discover these device names.

Keywords : kbDDK kbNDIS kbNTOS400
Version :
Platform :
Issue type : kbhowto