linux-kernel - pid ns feature request

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Message-ID: <CALCETrVSaboa0Y2v_sTbSz3xOxOZ-6jSq_D7DyQXMRB9VXJB8w@mail.gmail.com>
Date:	Fri, 25 Apr 2014 08:58:15 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"Serge E. Hallyn" <serge@...onical.com>
Subject: pid ns feature request

Unless I'm missing some trick, it's currently rather painful to mount
a namespace /proc.  You have to actually be in the pid namespace to
mount the correct /proc instance, and you can't unmount the old /proc
until you've mounted the new /proc.  This means that you have to fork
into the new pid namespace before you can finish setting it up.

Would it make sense to add a mount option to procfs to request a mount
for pid_ns_for_children instead of task_active_pid_ns?

--Andy

-- 
Andy Lutomirski
AMA Capital Management, LLC
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