Hide Files on Vista with Mini Filter Driver

NTFSD
1

Hi all,

I’ve developed a mini filter driver which controls access to external
storage devices like USB-sticks, USB-disks, etc. Now we want release
our driver also for Vista. Basically everything works fine except hiding files with
the Windows explorer. I’ve found in an older thread, that there shall be a new
File Information Class for the IRP_MJ_DIRECTORY_CONTROL/IRP_MN_QUERY_DIRECTORY - IRP. Probally I Can’t find any new File Information Class in the current version of the
Windows WDK.
Do anybody in this forum know the name of this new File Information Class ?

(Our pre-version of our driver for XP, W2K and W2003-Server was developed with the IFS-Development Kit build version 3790.1830. The WDK I’m still using is the WDK version 6000.)

Thanks in advance

Tim Pollmann.

2

> Probally I Can’t find any new File Information Class

in the current version of the Windows WDK.
Do anybody in this forum know the name of this new File Information Class ?

This is because there aren’t any new info classes.

As simple as that, there are info classes which haven’t been
used by explorer.exe in XP, so no one bothered with
intercepting those info classes in IRP_MN_QUERY_DIRECTORY.

But these info classes existed before, probably since NT 3.51.

L.

3

FileBothIdInformation existed in 3.51/4/2K? (wasn’t in the DDK)

Ladislav Zezula wrote:

> Probally I Can’t find any new File Information Class
> in the current version of the Windows WDK.
> Do anybody in this forum know the name of this new File Information Class ?

This is because there aren’t any new info classes.

As simple as that, there are info classes which haven’t been
used by explorer.exe in XP, so no one bothered with
intercepting those info classes in IRP_MN_QUERY_DIRECTORY.

But these info classes existed before, probably since NT 3.51.

–
Kind regards, Dejan
http://www.alfasp.com
File system audit, security and encryption kits.