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Of Filesystems And Other Demons

... about file system filters and complexity in general

Moving the blog

Hi all, I’ve decided to move the blog to a new location and i’ve copied all the existing posts. I...

Date: 02/11/2010

Verifier Checks: A filter has completed an operation but does not implement name provider callbacks

FILTER VERIFIER ERROR:   A filter has completed an operation but does not implement name...

Date: 10/08/2009

Names and file systems filters

Proper usage of names in file system filters and minifilters is a topic that comes up a lot. The...

Date: 09/30/2009

Issuing IO in minifilters: Part 2 – Flt vs. Zw

Sorry about the frequency of my posts, i’m been really swamped with the IFS Plugfest preparations....

Date: 09/01/2009

Issuing IO in minifilters: Part 1 - FltCreateFile

In this post I'll try to address a couple of questions that are all related and that I've seen asked...

Date: 08/11/2009

Filter Manager Concepts: Part 7 – IRP_CTRL

One very important structure that everyone writing minifilters very quickly becomes familiar is the...

Date: 07/24/2009

Filter Manager Concepts: Part 6 – STREAM_LIST_CTRL

Now that we’ve discussed contexts in general there is one very important structure to talk about....

Date: 07/09/2009

Filter Manager Concepts: Part 5 – CONTEXT_NODE

Why does one need contexts ? Well, the IO model in NT is based on passing objects around and the...

Date: 07/01/2009

Filter Manager Concepts: Part 4 – FLT_INSTANCE

The next logical structure in the hierarchy is the FLT_INSTANCE. An instance represents an...

Date: 06/24/2009

Filter Manager Concepts: Part 3 – FLT_FILTER

Well, as you have probably guessed, FLT_FILTER is a structure that describes a minifilter. It is a...

Date: 06/16/2009

Filter Manager Concepts: Part 2 – FLT_VOLUME

Right below the FLTP_FRAME in the hierarchy of filter manager objects is the FLT_VOLUME. It is a...

Date: 06/09/2009

Filter Manager Concepts: Part 1 – FLTP_FRAME

Filter Manager's only purpose is to simplify writing file system filters and sometimes it does this...

Date: 06/09/2009

Ello, ello… What's all this, then !?

The main focus of this blog is development of file system filters. I’m not sure how many people are...

Date: 06/09/2009