linux-kernel - Re: [PATCH] ptrace: allow restriction of ptrace scope

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Date:	Thu, 17 Jun 2010 16:11:27 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	"Serge E. Hallyn" <serge@...lyn.com>
Cc:	Kees Cook <kees.cook@...onical.com>, linux-kernel@...r.kernel.org,
	Randy Dunlap <rdunlap@...otime.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jiri Kosina <jkosina@...e.cz>,
	Dave Young <hidave.darkstar@...il.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Roland McGrath <roland@...hat.com>,
	Oleg Nesterov <oleg@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	David Howells <dhowells@...hat.com>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-doc@...r.kernel.org,
	Linux Containers <containers@...ts.osdl.org>
Subject: Re: [PATCH] ptrace: allow restriction of ptrace scope

"Serge E. Hallyn" <serge@...lyn.com> writes:

> Quoting Eric W. Biederman (ebiederm@...ssion.com):
>> Kees Cook <kees.cook@...onical.com> writes:
>> Somewhere Serge has a git tree where he started making the capabilities
>
> FWIW I believe the latest one is
>
> 	http://git.kernel.org/?p=linux/kernel/git/sergeh/linux-cr.git;a=shortlog;h=refs/heads/userns.feb16.1

Cool.

> I (/we) should get back to that...  Though waiting for certain other
> bits to settle (i.e. tagged sysfs and user-ns-safe SCM_CREDENTIALS)
> isn't a bad thing.

Tagged sysfs is in 2.6.35-rc1+
user-ns-safe SCM_CREDENTIALS have merged to net-next.

ns_capable seems to be the next piece easy piece of the user_namespace.

Eric
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