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

[Benjamin Thery]

Eric W. Biederman wrote:
> Daniel Lezcano <dlezcano@xxxxxxxxxx> 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.

Indeed, we observed some fun things with one distro (which defines some
particular udev rules) when a device called eth0 in a namespace comes 
back to init net :)

Benjamin

> Eric


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B e n j a m i n   T h e r y  - BULL/DT/Open Software R&D

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