[arch-general] Get netctl status from C?

[Martti Kühne]

On Sun, Dec 15, 2013 at 12:32 PM, Martti Kühne <mysatyre at gmail.com> wrote:
> I think there isn't explicitly any process running after netctl is
> done configuring the network configuration. So you should either get
> more specific about the kind of information you want, so whether you
> are talking about network state or netctl's opinion about it (not that
> these are likely to diverge, but there's my point)...
>
> Uhm... a glance into netctl's source just revealed it's a bash script.
> You'll need exec anyway.
>

wait. so:
https://github.com/joukewitteveen/netctl/blob/master/src/lib/globals#L6

char *statefile = getenv("NETCTL_STATE_FILE");
FILE *f;
if(!statefile)
  statefile = "/var/lib/netctl/netctl.state"; // from /usr/lib/network/globals
f = fopen(statefile, "r");
if(f) {
  // parse whatever you find there...
}

but...
I think the point in running netctl is that running it would update
said state file. So, the state file might be there and all. That's how
I believe these diverge. You'd have to analyze what netctl does there
and replicate that in c, but ... no really, use exec().

cheers!
mar77i