linux-kernel - Re: [patch 0/8] unprivileged mount syscall

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Message-Id: <E1HbaJV-00059N-00@dorka.pomaz.szeredi.hu>
Date:	Wed, 11 Apr 2007 12:44:33 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	linuxram@...ibm.com
CC:	serue@...ibm.com, akpm@...ux-foundation.org,
	linux-fsdevel@...r.kernel.org, containers@...ts.osdl.org,
	util-linux-ng@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [patch 0/8] unprivileged mount syscall

> 1. clone the master namespace.
> 
> 2. in the new namespace
> 
> 	move the tree under /share/$me to /
>         for each ($user, $what, $how) {
>             move /share/$user/$what to /$what
> 	    if ($how == slave) {
>                  make the mount tree under /$what as slave
>             }
>         }
>         
> 3. in the new namespace make the tree under 
>        /share as private and unmount /share

Thanks.  I get the basic idea now: the namespace itself need not be
shared between the sessions, it is enough if "share" propagation is
set up between the different namespaces of a user.

I don't yet see either in your or Viro's description how the trees
under /share/$USER are initialized.  I guess they are recursively
bound from /, and are made slaves.

Miklos
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