netdev - Re: Fwd: [PATCH] [-mm] ACPI: export ACPI events via netlink

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Date:	Tue, 26 Jun 2007 10:50:13 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	hadi@...erus.ca
Cc:	Zhang Rui <rui.zhang@...el.com>, netdev@...r.kernel.org,
	lenb@...nel.org, Thomas Graf <tgraf@...g.ch>
Subject: Re: Fwd: [PATCH] [-mm] ACPI: export ACPI events via netlink

On Mon, 2007-06-25 at 13:08 -0400, jamal wrote:

> > Why do you think that would be hard? It'd basically just mean replacing
> > the netlink_capable(sock, NL_NONROOT_RECV) calls with a call that
> > actually tests depending on the group(s) it wants.
> 
> I think it could be done. You will need to have root maybe initially set
> such permissions etc - but it may be overkill.

I think we pretty much know in the kernel whether we want to require
CAP_NET_ADMIN or not, let's punt the rest to userspace.

> > Yeah, sounds reasonable, you could ask the controller for which groups
> > are attached to a family and then get the IDs for those groups by name.
> 
> Yes, we would need a newer api to do it right. But it could be done if
> you register for multi groups.

I've just replied somewhere else in this thread with a patch, I haven't
actually tested that patch yet though. Once the generic netlink
multicast is figured out we can start attacking the permissions issue.

johannes

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