linux-kernel - Re: proc hidepid=2 and SGID programs

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Message-ID: <87ioy90zeo.fsf@tw-ebiederman.twitter.com>
Date:	Tue, 10 Sep 2013 03:00:31 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Christian Kujau <lists@...dbynature.de>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Vasiliy Kulikov <segoon@...nwall.com>
Subject: Re: proc hidepid=2 and SGID programs

Christian Kujau <lists@...dbynature.de> writes:

> On Sun, 8 Sep 2013 at 23:42, Eric W. Biederman wrote:
>> The check with hidepid is can you ptrace the process.  I expect there
>> is something with those sgid processes that keeps you from ptracing
>> them.
>
> Indeed, I cannot strace the process. But still, I wonder if this is 
> intended behaviour.

Well it is acting as desgined so I assume it is intended.

Beyond that shrug.

Eric


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