linux-kernel - Re: [patch 05/10] add "permit user mounts in new namespace" clone flag

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Message-Id: <E1HcFus-0001ZT-00@dorka.pomaz.szeredi.hu>
Date:	Fri, 13 Apr 2007 09:09:54 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	herbert@...hfloor.at
CC:	serue@...ibm.com, miklos@...redi.hu, containers@...ts.osdl.org,
	viro@....linux.org.uk, linux-fsdevel@...r.kernel.org,
	akpm@...ux-foundation.org, linuxram@...ibm.com,
	linux-kernel@...r.kernel.org
Subject: Re: [patch 05/10] add "permit user mounts in new namespace" clone flag

> question: how is mounting filesystems (loopback,
> fuse, etc) secured in such way that the user
> cannot 'create' device nodes with 'unfortunate'
> permissions?

All unprivileged mounts have "nosuid,nodev" added to their options.

Miklos
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