Alexander:
You may want to create your own private interface (via device control)
between
filter device and low-level device in which you can estabish a map between
FileObject
or, better yet, file’s FCB and whatever your private data is.
Regards,
Vladimir
-----Original Message-----
From: xxxxx@philips.com
[mailto:xxxxx@philips.com]
Sent: Friday, October 27, 2000 5:11 AM
To: File Systems Developers
Subject: [ntfsd] Passing extra file information from FSD to low-level
device driver
Hello all,
How is it possible to pass extra file “handle” (own file descriptor) from
FSD
(or FS filter driver) to low-level device driver along with Read/Write
requests?
It is necessary that this “handle” does not conflict with FSDs, intermediate
FS
filter drivers and be transparent for them. Generally, how can I safely pass
some
own data to low level device driver through all driver stack? May I use
IRP->FO->FCB for that purpose? Would FCB be still valid in low-level device
driver or it can be changed during passing drivers stack? In my low-level
device
driver I need to know to what file each block belongs to.
Regards,
Alexander
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