linux-kernel - Re: [PATCH v3 4/7] seccomp: mark first listener in the tree

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Message-ID: <2026-01-21-hectic-wriggly-dips-flags-EE541h@cyphar.com>
Date: Wed, 21 Jan 2026 13:22:15 +0100
From: Aleksa Sarai <cyphar@...har.com>
To: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@...onical.com>
Cc: kees@...nel.org, linux-doc@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Andy Lutomirski <luto@...capital.net>, 
	Will Drewry <wad@...omium.org>, Jonathan Corbet <corbet@....net>, Shuah Khan <shuah@...nel.org>, 
	Tycho Andersen <tycho@...ho.pizza>, Andrei Vagin <avagin@...il.com>, 
	Christian Brauner <brauner@...nel.org>, Stéphane Graber <stgraber@...raber.org>
Subject: Re: [PATCH v3 4/7] seccomp: mark first listener in the tree

On 2025-12-11, Alexander Mikhalitsyn <aleksandr.mikhalitsyn@...onical.com> wrote:
> Let's note if listener was a first one installed in the seccomp
> filters tree. We will need this information to retain old
> quirk behavior (as before seccomp nesting introduced).
> 
> Also, rename has_duplicate_listener() to check_duplicate_listener(),
> cause now this function is not read-only, but also modifies a state
> of a new_child seccomp_filter.
> 
> No functional change intended at this point.

Ah sorry, I didn't notice the date of the mails -- this was sent before
the LPC discussion! I'll wait for the v4 before reviewing further.

-- 
Aleksa Sarai
https://www.cyphar.com/

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