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Message-ID: <1432843577.9873.1.camel@redhat.com>
Date: Thu, 28 May 2015 22:06:17 +0200
From: Alexander Larsson <alexl@...hat.com>
To: "Eric W. Biederman" <ebiederm@...ssion.com>
Cc: Andy Lutomirski <luto@...capital.net>,
James Bottomley <James.Bottomley@...senpartnership.com>,
gnome-os-list@...me.org,
Linux Containers <containers@...ts.linux-foundation.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
mclasen@...hat.com, Linux FS Devel <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH] devpts: Add ptmx_uid and ptmx_gid options
On Thu, 2015-05-28 at 12:14 -0500, Eric W. Biederman wrote:
>
> > Where does the second namespace enter into this?
>
> Step a. Create create a user namespace where uid 0 is mapped to your
> real uid, and set up your sandbox (aka mount /dev/pts and everything
> else).
>
> Step b. Create a nested user namespace where your uid is identity
> mapped and run your desktop application. You can even drop all caps
> in
> your namespace.
Just tried this. Its not the nicest, and it doubles the number of
namespaces in action for each sandbox, but it does work.
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