WinFS and filter drivers?

NTFSD
1

Hi all,
Can anyone point me in the direction of any information regarding
how filter drivers that exist for NTFS will work (or not work) with WinFS?
Or even any information about filter drivers co-existing with with WinFS? I
haven’t seen to much on the web in the area, but I’m sure it’s of much
interest to many people reading this list…

Thanks,
Matt

2

I’m not sure why anyone would worry about this at this point, given that
WinFS isn’t even scheduled for a specific release yet and is thus likely
to change between now and then.

However, I’d assume it will behave similar to the way that WebDAV works
(user mode service and kernel mode file service, where the kernel mode
part “reflects” most of the calls to user mode). This is similar to the
way that Microsoft Research first demonstrated many years ago (as a way
to build user mode file systems).

But, seriously, given Microsoft’s recent announcement that WinFS would
not be present in Longhorn, I personally wouldn’t give this any
significant number of cycles at the present time.

Regards,

Tony

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Matthew N. White
Sent: Tuesday, September 07, 2004 12:59 PM
To: ntfsd redirect
Subject: [ntfsd] WinFS and filter drivers?

Hi all,
Can anyone point me in the direction of any information
regarding
how filter drivers that exist for NTFS will work (or not work) with
WinFS?
Or even any information about filter drivers co-existing with with
WinFS? I
haven’t seen to much on the web in the area, but I’m sure it’s of much
interest to many people reading this list…

Thanks,
Matt

Questions? First check the IFS FAQ at
https://www.osronline.com/article.cfm?id=17

You are currently subscribed to ntfsd as: xxxxx@osr.com
To unsubscribe send a blank email to xxxxx@lists.osr.com

3

Thanks Tony. Yeah, I’m not too concerned at this point given the delay in
release, etc. The main point I was worried about is if there is any chance
of WinFS significantly changing or supplanting the current filter driver
model that would be a big concern…

Matt

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Tony Mason
Sent: Tuesday, September 07, 2004 1:02 PM
To: Windows File Systems Devs Interest List
Subject: RE: [ntfsd] WinFS and filter drivers?

I’m not sure why anyone would worry about this at this point, given that
WinFS isn’t even scheduled for a specific release yet and is thus likely to
change between now and then.

However, I’d assume it will behave similar to the way that WebDAV works
(user mode service and kernel mode file service, where the kernel mode part
“reflects” most of the calls to user mode). This is similar to the way that
Microsoft Research first demonstrated many years ago (as a way to build user
mode file systems).

But, seriously, given Microsoft’s recent announcement that WinFS would not
be present in Longhorn, I personally wouldn’t give this any significant
number of cycles at the present time.

Regards,

Tony

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Matthew N. White
Sent: Tuesday, September 07, 2004 12:59 PM
To: ntfsd redirect
Subject: [ntfsd] WinFS and filter drivers?

Hi all,
Can anyone point me in the direction of any information regarding
how filter drivers that exist for NTFS will work (or not work) with WinFS?
Or even any information about filter drivers co-existing with with WinFS? I
haven’t seen to much on the web in the area, but I’m sure it’s of much
interest to many people reading this list…

Thanks,
Matt

Questions? First check the IFS FAQ at
https://www.osronline.com/article.cfm?id=17

You are currently subscribed to ntfsd as: xxxxx@osr.com To unsubscribe send
a blank email to xxxxx@lists.osr.com

Questions? First check the IFS FAQ at
https://www.osronline.com/article.cfm?id=17

You are currently subscribed to ntfsd as: unknown lmsubst tag argument: ‘’
To unsubscribe send a blank email to xxxxx@lists.osr.com

4

> However, I’d assume it will behave similar to the way that WebDAV works

(user mode service and kernel mode file service, where the kernel mode

Is WebDAV really such? From what I know, it is a RDBSS based redir.

Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
xxxxx@storagecraft.com
http://www.storagecraft.com

5

It indeed does use RDBSS, but it reflects calls to user mode using a
hanging IOCTL model.

Regards,

Tony

Tony Mason
Consulting Partner
OSR Open Systems Resources, Inc.
http://www.osr.com

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Maxim S. Shatskih
Sent: Tuesday, September 07, 2004 6:56 PM
To: ntfsd redirect
Subject: Re: [ntfsd] WinFS and filter drivers?

However, I’d assume it will behave similar to the way that WebDAV
works
(user mode service and kernel mode file service, where the kernel mode

Is WebDAV really such? From what I know, it is a RDBSS based redir.

Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
xxxxx@storagecraft.com
http://www.storagecraft.com

Questions? First check the IFS FAQ at
https://www.osronline.com/article.cfm?id=17

You are currently subscribed to ntfsd as: xxxxx@osr.com
To unsubscribe send a blank email to xxxxx@lists.osr.com