linux-ext4 - Re: [PATCH v2 31/39] audit: handle idmapped mounts

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Message-ID: <20201123074157.fqus6fgtcytydp2c@wittgenstein>
Date:   Mon, 23 Nov 2020 08:41:57 +0100
From:   Christian Brauner <christian.brauner@...ntu.com>
To:     Paul Moore <paul@...l-moore.com>
Cc:     Alexander Viro <viro@...iv.linux.org.uk>,
        Christoph Hellwig <hch@...radead.org>,
        linux-fsdevel@...r.kernel.org,
        John Johansen <john.johansen@...onical.com>,
        James Morris <jmorris@...ei.org>,
        Mimi Zohar <zohar@...ux.ibm.com>,
        Dmitry Kasatkin <dmitry.kasatkin@...il.com>,
        Stephen Smalley <stephen.smalley.work@...il.com>,
        Casey Schaufler <casey@...aufler-ca.com>,
        Arnd Bergmann <arnd@...db.de>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>,
        Geoffrey Thomas <geofft@...reload.com>,
        Mrunal Patel <mpatel@...hat.com>,
        Josh Triplett <josh@...htriplett.org>,
        Andy Lutomirski <luto@...nel.org>,
        Theodore Tso <tytso@....edu>, Alban Crequy <alban@...volk.io>,
        Tycho Andersen <tycho@...ho.ws>,
        David Howells <dhowells@...hat.com>,
        James Bottomley <James.Bottomley@...senpartnership.com>,
        Jann Horn <jannh@...gle.com>,
        Seth Forshee <seth.forshee@...onical.com>,
        Stéphane Graber <stgraber@...ntu.com>,
        Aleksa Sarai <cyphar@...har.com>,
        Lennart Poettering <lennart@...ttering.net>,
        "Eric W. Biederman" <ebiederm@...ssion.com>, smbarber@...omium.org,
        Phil Estes <estesp@...il.com>, Serge Hallyn <serge@...lyn.com>,
        Kees Cook <keescook@...omium.org>,
        Todd Kjos <tkjos@...gle.com>, Jonathan Corbet <corbet@....net>,
        containers@...ts.linux-foundation.org,
        linux-security-module@...r.kernel.org, linux-api@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-audit@...hat.com,
        linux-integrity@...r.kernel.org, selinux@...r.kernel.org
Subject: Re: [PATCH v2 31/39] audit: handle idmapped mounts

On Sun, Nov 22, 2020 at 05:17:39PM -0500, Paul Moore wrote:
> On Sun, Nov 15, 2020 at 5:43 AM Christian Brauner
> <christian.brauner@...ntu.com> wrote:
> >
> > Audit will sometimes log the inode's i_uid and i_gid. Enable audit to log the
> > mapped inode when it is accessed from an idmapped mount.
> 
> I mentioned this in an earlier patch in this patchset, but it is worth

I did not receive that message.

> repeating here: audit currently records information in the context of
> the initial/host namespace and I believe it should probably stay that
> way until the rest of the namespace smarts that Richard is working on

Ah, that's good to know and makes the patchset simpler so I'm all for
it.

Christian