linux-kernel - Re: fs/proc/base.c: text md5sums; tgid vs tid; and INF vs ONE?

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Message-ID: <50944E03.80802@xdin.com>
Date:	Fri, 2 Nov 2012 22:49:40 +0000
From:	Arvid Brodin <Arvid.Brodin@...n.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
CC:	Arvid Brodin <Arvid.Brodin@...n.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Al Viro" <viro@...iv.linux.org.uk>,
	Cyrill Gorcunov <gorcunov@...nvz.org>,
	"David Rientjes" <rientjes@...gle.com>
Subject: Re: fs/proc/base.c: text md5sums; tgid vs tid; and INF vs ONE?

On 2012-11-01 21:29, Arvid Brodin wrote:
> On 2012-10-30 23:45, Eric W. Biederman wrote:
>> I recommend you checkout the code in security/ima/ looks like it can
>> already do what you are trying to do.
> 
> Ah. I did actually check this out a year and a half ago or something like that. Seems like
> it has gotten a bit more capable since then with the new patches (immutable executables
> etc)! I'll take a look at it again to see if it might fit our needs. Thanks!
> 

It looks like IMA only checks files when they are accessed; I cannot find any mechanism
for checking code that is already executing. So it won't help us, unfortunately.

-- 
Arvid Brodin | Consultant (Linux)
XDIN AB | Knarrarnäsgatan 7 | SE-164 40 Kista | Sweden | xdin.com