From: greg@kroah.com (Greg KH)
To: kernelnewbies@lists.kernelnewbies.org
Subject: Filtering USB storage data in kernel module
Date: Thu, 17 Nov 2011 06:49:05 -0800 [thread overview]
Message-ID: <20111117144905.GA30193@kroah.com> (raw)
In-Reply-To: <4EC4C9AF.8090008@gmail.com>
On Thu, Nov 17, 2011 at 02:15:35PM +0530, Abhijit Pawar wrote:
> Hi All,
> I need to filter the data written/read to and from the USB storage
> disk.
Why?
What are you wanting to do at "filter" time?
Why just USB disks? What makes them special?
How are you going to determine if a disk is a USB device or not?
> Now the way USB is made known to OS is through SCSI and then
> respective filesystem ( mostly usbfs).
Not really, usbfs is only one way, and it has nothing to do with usb
disks.
> So is there any way I can intercept this stack and have my kernel module
> invoked so that I will get the data.
Not easily.
> I have been thinking on two approaches:
>
> 1. Use VFS and write a proxy filesystem for USB device which will filter
> the data.
> 2. checking SCSI and any intercepting point.
Again, what are you trying to "filter"? That will determine where you
make changes.
thanks,
greg k-h
next prev parent reply other threads:[~2011-11-17 14:49 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-17 8:45 Filtering USB storage data in kernel module Abhijit Pawar
2011-11-17 14:49 ` Greg KH [this message]
2011-11-18 13:06 ` Abhijit Pawar
2011-11-18 14:46 ` Greg KH
2011-11-18 15:35 ` Abhijit Pawar
2011-11-21 13:55 ` Abhijit Pawar
2012-01-12 7:03 ` Abhijit Pawar
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