linux-kernel - Re: [PATCH 2/4] fs: define a firmware security filesystem named fwsecurityfs

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Message-ID: <deda857ccc949f920ae3b7eca753d41b76acceda.camel@linux.ibm.com>
Date:   Mon, 12 Dec 2022 11:58:56 +1100
From:   Andrew Donnellan <ajd@...ux.ibm.com>
To:     Nayna <nayna@...ux.vnet.ibm.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Nayna Jain <nayna@...ux.ibm.com>, linuxppc-dev@...ts.ozlabs.org,
        linux-fsdevel@...r.kernel.org, linux-efi@...r.kernel.org,
        linux-security-module <linux-security-module@...r.kernel.org>,
        linux-kernel@...r.kernel.org,
        Michael Ellerman <mpe@...erman.id.au>, npiggin@...il.com,
        christophe.leroy@...roup.eu, Dov Murik <dovmurik@...ux.ibm.com>,
        George Wilson <gcwilson@...ux.ibm.com>,
        Matthew Garrett <mjg59@...f.ucam.org>,
        Dave Hansen <dave.hansen@...el.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Russell Currey <ruscur@...sell.cc>,
        Stefan Berger <stefanb@...ux.ibm.com>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        "Ritesh Harjani (IBM)" <ritesh.list@...il.com>
Subject: Re: [PATCH 2/4] fs: define a firmware security filesystem named
 fwsecurityfs

On Wed, 2022-11-23 at 13:57 -0500, Nayna wrote:
> 
> Given there are no other exploiters for fwsecurityfs and there should
> be 
> no platform-specific fs, would modifying sysfs now to let userspace 
> create files cleanly be the way forward? Or, if we should strongly 
> consider securityfs, which would result in updating securityfs to
> allow 
> userspace creation of files and then expose variables via a more 
> platform-specific directory /sys/kernel/security/pks? We want to pick
> the best available option and would find some hints on direction
> helpful 
> before we develop the next patch.

Ping - it would be helpful for us to know your thoughts on this.


Andrew

-- 
Andrew Donnellan    OzLabs, ADL Canberra
ajd@...ux.ibm.com   IBM Australia Limited