linux-kernel - Re: [PATCH 1/9] sysfs: add sysfs_remove_bin_file

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Date:   Thu, 7 Oct 2021 07:23:33 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Zev Weiss <zev@...ilderbeest.net>
Cc:     openbmc@...ts.ozlabs.org, Jeremy Kerr <jk@...econstruct.com.au>,
        Joel Stanley <joel@....id.au>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/9] sysfs: add sysfs_remove_bin_file_self() function

On Wed, Oct 06, 2021 at 05:09:46PM -0700, Zev Weiss wrote:
> This is simply the bin_attribute analog to sysfs_remove_file_self().

No, no binary sysfs file should be triggering a remove.

binary sysfs files are "pass-through-only" from userspace to hardware,
the kernel should not be even knowing what is read/written to them.

What do you think this is needed for?

thanks,

greg k-h