linux-kernel - Re: [PATCH 03/11] Creation of "usb_device

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Date:   Tue, 13 Jun 2017 09:50:06 +0200
From:   Salvatore Mesoraca <s.mesoraca16@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     kernel list <linux-kernel@...r.kernel.org>,
        linux-security-module@...r.kernel.org,
        Kernel Hardening <kernel-hardening@...ts.openwall.com>,
        Brad Spengler <spender@...ecurity.net>,
        PaX Team <pageexec@...email.hu>,
        Casey Schaufler <casey@...aufler-ca.com>,
        Kees Cook <keescook@...omium.org>,
        James Morris <james.l.morris@...cle.com>,
        "Serge E. Hallyn" <serge@...lyn.com>, linux-usb@...r.kernel.org
Subject: Re: [PATCH 03/11] Creation of "usb_device_auth" LSM hook

2017-06-12 21:38 GMT+02:00 Greg Kroah-Hartman <gregkh@...uxfoundation.org>:
> No, like Krzysztof said, you can already do this today, just fine, from
> userspace.  I think that support has been there for over a decade now,
> why are you not taking advantage of this already?
> No need to add extra stuff to the kernel at all to do this

Honesty, now that you mention it, I agree with you.
This feature can be implemented in userspace and I'm the first one to
think that what can be implemented in userspace should stay in
userspace.

> sorry you
> implemented all of this for no reason :(

Don't worry, usb filtering is just a small part of this patchset.
Let's hope the rest will end up being more useful. :)

Thank you very much for taking the time to answer me.