Windows System Software -- Consulting, Training, Development -- Unique Expertise, Guaranteed Results

Before Posting...
Please check out the Community Guidelines in the Announcements and Administration Category.

More Info on Driver Writing and Debugging

The free OSR Learning Library has more than 50 articles on a wide variety of topics about writing and debugging device drivers and Minifilters. From introductory level to advanced. All the articles have been recently reviewed and updated, and are written using the clear and definitive style you've come to expect from OSR over the years.

Check out The OSR Learning Library at:

[minifilter] Can't receive specifies class values in IRP_MJ_DIRECTORY_CONTROL

r1ng0to3tourr1ng0to3tour Member Posts: 4
edited November 2018 in NTFSD

I have a minifilter, according to this reference link:
we must get specifies one of the values described below:


But when i check below class always received 0

also check other directory control and saw that for below class received FileFullDirectoryInformation (0n2)
and FileAlternateNameInformation (0n21) for delete and drag operation.


please guide me. How is this possible? Did i make a mistake?


  • rod_widdowsonrod_widdowson Member - All Emails Posts: 1,151

    Are you checking the minor control code? Thought sounds like it might be directory notification.

  • r1ng0to3tourr1ng0to3tour Member Posts: 4

    Thank you rod_widdowson for reply,
    Yes I did in both cases, with and without minor filter but it did not make a difference

  • rod_widdowsonrod_widdowson Member - All Emails Posts: 1,151

    I that case I have no further ideas. What you are seeing doesn't correspond either to the documentation or what I have seen. So there is a problem somewhere. My suggestion would be to examine the FLT_CALLBACK_DATA and the call stack closely.

Sign In or Register to comment.

Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Upcoming OSR Seminars
OSR has suspended in-person seminars due to the Covid-19 outbreak. But, don't miss your training! Attend via the internet instead!
Kernel Debugging 30 Mar 2020 OSR Seminar Space
Developing Minifilters 15 Jun 2020 LIVE ONLINE
Writing WDF Drivers 22 June 2020 LIVE ONLINE
Internals & Software Drivers 28 Sept 2020 Dulles, VA