linux-kernel - Re: [PATCH 3/4] proc: Point /proc/net at /proc/thread-self/net instead of /proc/self/net

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Message-ID: <CAHk-=wihPFFE5KcsmOnOm1CALQDWqC1JTvrwSGBS08N5avVmEA@mail.gmail.com>
Date:   Thu, 29 Sep 2022 14:29:03 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Al Viro <viro@...iv.linux.org.uk>
Cc:     David Laight <David.Laight@...lab.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        "Serge E. Hallyn" <serge@...lyn.com>
Subject: Re: [PATCH 3/4] proc: Point /proc/net at /proc/thread-self/net
 instead of /proc/self/net

On Thu, Sep 29, 2022 at 2:15 PM Al Viro <viro@...iv.linux.org.uk> wrote:
>
> FWIW, what e.g. debian profile for dhclient has is
>   @{PROC}/@...d}/net/dev      r,
>
> Note that it's not
>   @{PROC}/net/dev      r,

Argh. Yeah, then a bind mount or a hardlink won't work either, you're
right. I was assuming that any Apparmor rules allowed for just
/proc/net.

Oh well. I guess we're screwed any which way we turn.

           Linus