From: David Howells <dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: eparis-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org,
serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org,
oleg-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org,
James.Bottomley-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org
Cc: dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
keyrings-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
simo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org
Subject: Re: Keyrings, user namespaces and the user_struct
Date: Tue, 25 Oct 2016 17:53:32 +0100 [thread overview]
Message-ID: <18335.1477414412@warthog.procyon.org.uk> (raw)
In-Reply-To: <17576.1477412418-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
David Howells <dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote:
> (2) If a process's user_namespace doesn't match that recorded in a key then
> it gets ENOKEY if it tries to refer to it or access it and can't see it
> in /proc/keys.
There's another possibility here - since user_namespaces are hierarchical,
does it make sense to let a process see keys that are in an ancestral
namespace?
David
next prev parent reply other threads:[~2016-10-25 16:53 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20161026143856.GL3334@pc.thejh.net>
[not found] ` <CALCETrU0PqNYmWx70pugkhj-kAD5DSzSi3swhK+v12WMYZYUZA@mail.gmail.com>
[not found] ` <17576.1477412418@warthog.procyon.org.uk>
[not found] ` <17576.1477412418-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2016-10-25 16:41 ` Keyrings, user namespaces and the user_struct Jann Horn
2016-10-25 16:49 ` James Bottomley
2016-10-25 16:53 ` David Howells [this message]
[not found] ` <18335.1477414412-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2016-10-25 16:56 ` James Bottomley
2016-10-26 7:18 ` José Bollo
[not found] ` <1477414605.3079.40.camel@HansenPartnership.com>
[not found] ` <1477414605.3079.40.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2016-10-25 17:06 ` Jann Horn
2016-10-25 17:30 ` David Howells
[not found] ` <20161025170602.GB24481@laptop.thejh.net>
[not found] ` <20161025170602.GB24481-GiL72Q0nGm9Crx9znvW9yA@public.gmane.org>
2016-10-25 18:05 ` James Bottomley
[not found] ` <1477418708.3079.52.camel@HansenPartnership.com>
[not found] ` <1477418708.3079.52.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2016-10-25 18:17 ` Jann Horn
[not found] ` <20161025181735.GC24481-GiL72Q0nGm9Crx9znvW9yA@public.gmane.org>
2016-10-25 18:21 ` James Bottomley
2016-10-25 19:34 ` Andy Lutomirski
[not found] ` <20947.1477428095@warthog.procyon.org.uk>
[not found] ` <20947.1477428095-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2016-10-25 20:51 ` James Bottomley
2016-10-26 5:54 ` Eric W. Biederman
[not found] ` <87shrju031.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2016-10-26 6:48 ` Eric W. Biederman
[not found] ` <CALCETrU0PqNYmWx70pugkhj-kAD5DSzSi3swhK+v12WMYZYUZA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-25 20:41 ` David Howells
2016-10-26 14:34 ` David Howells
[not found] ` <9243.1477492490-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2016-10-26 14:38 ` Jann Horn
[not found] ` <20161026143856.GL3334-J1fxOzX/cBvk1uMJSBkQmQ@public.gmane.org>
2016-10-26 14:48 ` David Howells
[not found] ` <9610.1477493338-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2016-10-26 18:10 ` Eric W. Biederman
[not found] ` <87mvhrrng3.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2016-10-26 18:35 ` David Howells
[not found] ` <3677.1477506925-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2016-10-27 16:11 ` David Howells
2016-10-27 16:18 ` Eric W. Biederman
[not found] ` <18846.1477416621@warthog.procyon.org.uk>
[not found] ` <18846.1477416621-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2016-10-25 18:13 ` James Bottomley
[not found] ` <1477419204.3079.60.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2016-10-25 18:22 ` Jann Horn
[not found] ` <20161025182206.GD24481@laptop.thejh.net>
[not found] ` <20161025182206.GD24481-GiL72Q0nGm9Crx9znvW9yA@public.gmane.org>
2016-10-25 18:25 ` James Bottomley
2016-10-26 4:45 ` Eric W. Biederman
[not found] ` <87y41bvhui.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2016-10-26 7:37 ` David Howells
2016-10-26 4:38 ` Eric W. Biederman
2016-10-26 11:43 ` David Howells
2016-10-25 16:20 David Howells
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