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From: "Serge E. Hallyn" <serue@us.ibm.com>
To: lkml <linux-kernel@vger.kernel.org>
Cc: Linux Containers <containers@lists.osdl.org>
Subject: [RFC patch 0/2] posix mqueue namespace (v12)
Date: Wed, 17 Dec 2008 11:55:13 -0600	[thread overview]
Message-ID: <20081217175513.GA23291@us.ibm.com> (raw)

Posix message queue support in ipc namespaces has had
several submissions by various people.  Hopefully this
version, based on code by both Cedric Le Goater and
Nadia Derbey has a shot at making it upstream.

To create a new ipc namespace with posix mq support, you
would

	unshare(CLONE_NEWIPC|CLONE_NEWNS);
	umount /dev/mqueue
	mount -t mqueue mqueue /dev/mqueue

It's perfectly valid to do vfs operations on files
in another ipc_namespace's /dev/mqueue, but any use
of mq_open(3) and friends will act in your own ipc_ns.

thanks,
-serge

             reply	other threads:[~2008-12-17 17:55 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-12-17 17:55 Serge E. Hallyn [this message]
2008-12-17 17:55 ` [PATCH 1/2] mqueue ns: move mqueue_mnt into struct ipc_namespace Serge E. Hallyn
2008-12-17 18:36   ` Dave Hansen
2008-12-17 18:52     ` Serge E. Hallyn
2008-12-17 18:55       ` Dave Hansen
2008-12-17 17:55 ` [PATCH 2/2] ipc namespaces: implement support for posix msqueues Serge E. Hallyn
2008-12-17 18:54   ` Dave Hansen
2008-12-17 19:08     ` Serge E. Hallyn
2008-12-17 19:08       ` Serge E. Hallyn
2008-12-17 21:25   ` Sukadev Bhattiprolu
     [not found]     ` <20081217212521.GA14740-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-12-18 21:36       ` Serge E. Hallyn
2008-12-18 21:36         ` Serge E. Hallyn
2008-12-17 17:57 ` [LTP PATCH 1/4] posix message queue namespaces: first test Serge E. Hallyn
2008-12-17 17:57 ` [LTP PATCH 2/4] posix mqns: test parent to child mq access Serge E. Hallyn
2008-12-17 17:58 ` [LTP PATCH 3/4] posix mqns: test vfs and mq interaction Serge E. Hallyn
2008-12-17 17:58 ` [LTP PATCH 4/4] posix mqns: test that user mount of posixmq survivies the ipcns Serge E. Hallyn

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