Retrieving device information in a lower filter driver

Hi All,

I am implementing a lower filter driver to a SCSI class driver(basically
disk.sys). I want to claim the device in my filter driver, instead of
allowing the class driver to claim the device, so that the device is not
shown by Windows(the drive letter should not come for the device).

I am able to filter the claim request in my filter driver. But before
claiming the device, I need to ensure that it is my device. For this I have
to get some information about the device being claimed. But the problem is
the claim SRB doesn’t have any device information in it. So how can I
retrieve scsi device information from a lower filter driver?

Can anyone please help me in this?