linux-kernel - Re: [PATCH 06/11] sysfs: Implement sysfs tagged directory support.

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Date:	Thu, 03 Jul 2008 05:27:01 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Daniel Lezcano <dlezcano@...ibm.com>
Cc:	Tejun Heo <htejun@...il.com>, Greg Kroah-Hartman <gregkh@...e.de>,
	linux-kernel@...r.kernel.org, Al Viro <viro@....linux.org.uk>,
	Linux Containers <containers@...ts.osdl.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Benjamin Thery <benjamin.thery@...l.net>
Subject: Re: [PATCH 06/11] sysfs: Implement sysfs tagged directory support.

Daniel Lezcano <dlezcano@...ibm.com> writes:

> The kobject events are sent through a netlink message which is not currently per
> network namespace. Shouldn't be useful to have a way to retrieve from the
> kobject the network namespace or the uevent socket associated with it ? IMHO
> having idr in the kobject + netns pointer associated may help to handle the
> sysfs isolation and makes the uevent per namespace trivial, no ?

Grumble.  I have been conveniently been forgetting about that socket.
Similarly we have the user mode helpers to deal with.

For this conversation there is a simple answer.  All of that is in the
kobject layer, and works even when you compile sysfs out of your kernel.
Therefore it is a separate problem.  And sysfs idr tags have nothing
to do with it.

It is most definitely something we need to come back to.  I bet there
are some interesting interactions when you have multiple network devices
with the same name generating events.

Eric

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