linux-kernel - Re: [PATCH v2 1/3] binderfs: add support for feature files

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Message-ID: <20210715080738.oumkwhbcz7lxej65@wittgenstein>
Date:   Thu, 15 Jul 2021 10:07:38 +0200
From:   Christian Brauner <christian.brauner@...ntu.com>
To:     Carlos Llamas <cmllamas@...gle.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arve Hjønnevåg <arve@...roid.com>,
        Todd Kjos <tkjos@...roid.com>,
        Martijn Coenen <maco@...roid.com>,
        Christian Brauner <christian@...uner.io>,
        Joel Fernandes <joel@...lfernandes.org>,
        Steven Moreland <smoreland@...gle.com>,
        kernel-team@...roid.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/3] binderfs: add support for feature files

On Thu, Jul 15, 2021 at 03:18:03AM +0000, Carlos Llamas wrote:
> Provide userspace with a mechanism to discover features supported by
> the binder driver to refrain from using any unsupported ones in the
> first place. Starting with "oneway_spam_detection" only new features
> are to be listed under binderfs and all previous ones are assumed to
> be supported.
> 
> Assuming an instance of binderfs has been mounted at /dev/binderfs,
> binder feature files can be found under /dev/binderfs/features/.
> Usage example:
> 
>   $ mkdir /dev/binderfs
>   $ mount -t binder binder /dev/binderfs
>   $ cat /dev/binderfs/features/oneway_spam_detection
>   1
> 
> Signed-off-by: Carlos Llamas <cmllamas@...gle.com>
> ---

Looks good,
Acked-by: Christian Brauner <christian.brauner@...ntu.com>