[Toybox] [PATCH] Add ifplugd

[Eric Molitor]

Roughly speaking it handles RTM_GETLINK events from network devices and
fires off a shell script in response. I use it to admin up a network
interface when created and then to fire off DHCP to configure when it is
runnable (IFF_RUNNING). I just started looking at moving both route and
mdev to use netlink/rtnetlink. I'll take a look at extending mdev to
support RTM_GETLINK messages. For now consider this patch abandoned and
I'll come back after I read up a bit more.

- Eric

On Mon, May 11, 2020 at 8:32 PM Rob Landley <rob at landley.net> wrote:

> On 5/10/20 1:34 PM, Eric Molitor wrote:
> > A simple implementation of ifplugd that I'm using on a few personal
> projects.
> > I've cleaned it up and attempted to mostly adhere to the toybox coding
> style.
>
> Quick glance, it says to look at an example ifplugd.action script which
> isn't
> included?
>
> I note that I'm averse to commands that _need_ an external script to
> function.
> When I finish cleaning up dhcp you should be able to "dhcp -i eth0" and
> have it
> just _do_ it, for example. (An optional script it calls out to if
> detected, or
> if told to do so on the command line, is one thing. "will not work at all
> without it" is another.)
>
> But then... I dunno what ifplugd is supposed to _do_ exactly? (Haven't used
> it...) I had a todo item to teach mdev to respond to more hotplug events,
> and
> ethernet transceiver toggle (and the wireless equivalent) was in there,
> but it's
> a big todo heap of "haven't made a wpasupplicant yet, but I did go to the
> talk
> from the guy who was writing a new replacement thingy for all that
> infrastructure"...
>
> Rob
>
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