linux-kernel - Re: [PATCH 8/9] user namespaces: convert several capable() calls

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Message-ID: <4D60150C.7040705@free.fr>
Date:	Sat, 19 Feb 2011 20:07:56 +0100
From:	Daniel Lezcano <daniel.lezcano@...e.fr>
To:	"Serge E. Hallyn" <serge@...lyn.com>
CC:	xemul@...allels.com, containers@...ts.linux-foundation.org,
	kernel list <linux-kernel@...r.kernel.org>,
	dhowells@...hat.com, LSM <linux-security-module@...r.kernel.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Kees Cook <kees.cook@...onical.com>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Michael Kerrisk <mtk.manpages@...il.com>
Subject: Re: [PATCH 8/9] user namespaces: convert several capable() calls

On 02/17/2011 04:03 PM, Serge E. Hallyn wrote:
> CAP_IPC_OWNER and CAP_IPC_LOCK can be checked against current_user_ns(),
> because the resource comes from current's own ipc namespace.
>
> setuid/setgid are to uids in own namespace, so again checks can be
> against current_user_ns().
>
> Changelog:
> 	Jan 11: Use task_ns_capable() in place of sched_capable().
> 	Jan 11: Use nsown_capable() as suggested by Bastian Blank.
> 	Jan 11: Clarify (hopefully) some logic in futex and sched.c
> 	Feb 15: use ns_capable for ipc, not nsown_capable
>
> Signed-off-by: Serge E. Hallyn<serge.hallyn@...onical.com>
> ---

Acked-by: Daniel Lezcano <daniel.lezcano@...e.fr>
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