linux-kernel - Re: [RFC PATCH 04/27] containers: Allow a process to be forked into a container

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Message-ID: <20295.1550618219@warthog.procyon.org.uk>
Date:   Tue, 19 Feb 2019 23:16:59 +0000
From:   David Howells <dhowells@...hat.com>
To:     ebiederm@...ssion.com (Eric W. Biederman)
Cc:     dhowells@...hat.com, keyrings@...r.kernel.org,
        trond.myklebust@...merspace.com, sfrench@...ba.org,
        linux-security-module@...r.kernel.org, linux-nfs@...r.kernel.org,
        linux-cifs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        rgb@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 04/27] containers: Allow a process to be forked into a container

Eric W. Biederman <ebiederm@...ssion.com> wrote:

> > Further attempts to fork into the container will be rejected.
>
> There are no technical reasons to disallow this, and may good practical
> reasons to allow this.

Fair enough; that can be done.  Could even emulate /sbin/request-key upcalling
that way, with the manager spawning the daemon into the container with it.

> So you are breaking nsenter, and it's like.

It shouldn't stop nsenter() from working.

David