linux-kernel - Re: [RFC PATCH v1 2/6] proc: Add allowlist to control access to procfs files

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Message-Id: <20230125153649.a8524c34b89d6cdbb06bd5a2@linux-foundation.org>
Date:   Wed, 25 Jan 2023 15:36:49 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Alexey Gladkov <legion@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>, containers@...ts.linux.dev,
        linux-fsdevel@...r.kernel.org,
        Alexey Dobriyan <adobriyan@...il.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        Christian Brauner <brauner@...nel.org>,
        Val Cowan <vcowan@...hat.com>
Subject: Re: [RFC PATCH v1 2/6] proc: Add allowlist to control access to
 procfs files

On Wed, 25 Jan 2023 16:28:49 +0100 Alexey Gladkov <legion@...nel.org> wrote:

> +config PROC_ALLOW_LIST
> +	bool "/proc/allowlist support"
> +	depends on PROC_FS
> +	default n
> +	help
> +	  Provides a way to restrict access to certain files in procfs. Mounting

I'd say "to restrict presence of files in procfs".

> +	  procfs with subset=allowlist will add the file /proc/allowlist which
> +	  contains a list of files and directories that should be accessed. To

s/accessed/present/

> +	  prevent the list from being changed, the file itself must be excluded.