FAT FileSystem and Filter Driver

NTFSD
1

Hi Gurus,
Is there any special cases that are to be handled while writing an
Encryption/Decryption Filter Driver for FAT32 File systems.
Actually we are witnessing some frequent crashes with respect to FAT whereas
with the help of NTFS its perfectly working.
Has anyone witnessed this kind of problem with FAT?
Thanks and Regards
Shal

2

> Actually we are witnessing some frequent crashes with respect to FAT
whereas

with the help of NTFS its perfectly working.
Has anyone witnessed this kind of problem with FAT?

You have to give more detailed description of the problem
you observe (bugcheck code, Windbg analyzed listing etc.)

If you write “frequent crashes”, no one is able to give you
any hints of what to check.

L.

3

Actually, we can say “it is probably a bug in your filter driver” - but
that is about it! :wink:

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 Ladislav Zezula
Sent: Tuesday, June 22, 2004 3:42 AM
To: ntfsd redirect
Subject: Re: [ntfsd] FAT FileSystem and Filter Driver

Actually we are witnessing some frequent crashes with respect to FAT
whereas
with the help of NTFS its perfectly working.
Has anyone witnessed this kind of problem with FAT?

You have to give more detailed description of the problem you observe
(bugcheck code, Windbg analyzed listing etc.)

If you write “frequent crashes”, no one is able to give you any hints of
what to check.

L.

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

4

> Actually, we can say “it is probably a bug in your filter driver” - but

that is about it! :wink:

Heh, most probably an access violation :-))

L.

5

Well, tracing FAT interop problems are usually much easier than with NTFS.
Go build checked version of FastFat driver. It would be much easier to
locate a bug. Or use checked version of Windows (available through MSDN
subscription). Also, be sure to enable Driver Verifier. It often helps.

–htfv

“Shalini” wrote in message news:xxxxx@ntfsd…
> Hi Gurus,
> Is there any special cases that are to be handled while writing an
> Encryption/Decryption Filter Driver for FAT32 File systems.
> Actually we are witnessing some frequent crashes with respect to FAT
whereas
> with the help of NTFS its perfectly working.
> Has anyone witnessed this kind of problem with FAT?
> Thanks and Regards
> Shal
>
>
>