linux-kernel - Re: For review: user

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Message-ID: <CAKgNAkiMOGtuCyvhSpku65p1ZJ5SfdYcOxxAU+H-mk-76wqOPw@mail.gmail.com>
Date:	Thu, 21 Mar 2013 16:52:58 +0100
From:	"Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>
To:	Serge Hallyn <serge.hallyn@...ntu.com>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	linux-man <linux-man@...r.kernel.org>,
	Linux Containers <containers@...ts.linux-foundation.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Vasily Kulikov <segoon@...nwall.com>
Subject: Re: For review: user_namespaces(7) man page

Hi Serge,

On Fri, Mar 15, 2013 at 4:38 PM, Serge Hallyn <serge.hallyn@...ntu.com> wrote:
> Hi,
>
> you mention that after creating a new user namespace you at first have
> all capabilities in the new ns.  You don't explicitly mention (or I
> missed it - I did see the mention of securebits) that if you want to
> keep those capabilities after doing an exec, you need to first have
> something mapped to uid 0 in the userns, and do setuid(0).

Good point. I'll add something on that.

> You might not want to list manpages from other projects,

Actually, not a problem. Many of the pages in my set already do this.

> but Eric's
> shadow patches introduce some good new manpages as well.  Those aren't yet
> accepted upstream, but if/when they are then mention at least of
> subuid(5), subgid(5), and newuidmap(1) and newgidmap(1) might be good.

I'll add those.

Cheers,

Michael


-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Author of "The Linux Programming Interface"; http://man7.org/tlpi/
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