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Prevent CDROM devices
Hi OSR Experts,
I'm trying to write a driver to prevent CDROM devices (when plugged in) on the OS.
I have started research implement POC of it by writing "Filter driver(?for bus or nobus?)" which implementing "IRP_MJ_PNP" and "IRP_MN_START_DEVICE" and set ACCESS_DENIED for preventing.
I have a few questions:
1. Am I on the right way?
2. Should my filter driver be for bus or nonbus?
3. Any other suggestions
Thanks,
Jake
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Comments
much simpler.
Mark Roddy
Hi Mark_Roddy,
Thanks for your response.
In the future I would like to give the option for exclusions according to device name/id, so I'm still looking for PNP filter driver solution.
If you really, truly, mean just CDROM type devices, I would probably start by trying an upper filter of CDROM.SYS
And I'd write it using KMDF, not WDM as you are implying.
I'd experiment about which, specific, operations (read? write? specific IOCTLs?) that I block or allow so that I get the exact behavior I seek.
Peter
Peter Viscarola
OSR
@OSRDrivers
Another option is a filesystem filter driver ... there are good examples of these on MSDN like this [ https://docs.microsoft.com/en-us/samples/microsoft/windows-driver-samples/cdfs-file-system-driver/ ], and you can specify the exact type of behaviour you want to block, when you want to block it, for what media, etc. ...