linux-kernel - Re: CLONE_PARENT after setns(CLONE

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Message-ID: <87ppqdjg6f.fsf@tw-ebiederman.twitter.com>
Date:	Wed, 06 Nov 2013 14:53:12 -0800
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Serge Hallyn <serge.hallyn@...ntu.com>
Cc:	Oleg Nesterov <oleg@...hat.com>,
	Andy Lutomirski <luto@...capital.net>,
	Brad Spengler <spender@...ecurity.net>,
	Christian Seiler <christian@...kd.de>,
	lkml <linux-kernel@...r.kernel.org>,
	Andy Whitcroft <apw@...onical.com>,
	Lxc development list <lxc-devel@...ts.sourceforge.net>
Subject: Re: CLONE_PARENT after setns(CLONE_NEWPID)

Serge Hallyn <serge.hallyn@...ntu.com> writes:

> So apart from peers seeing the new task as having pid 0, and
> sigchild going to the grandparent, are there any other side
> effects?  Is ptrace an issue?  (I took a quick look but it
> doesn't seem like it)

There is nothing new the pid namespace adds to the pid namespace case.

Eric
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