Re: [PATCH 8/9] rfkill: Userspace control for airplane mode

From: Dan Williams
Date: Wed Feb 10 2016 - 11:53:36 EST


On Wed, 2016-02-10 at 17:07 +0100, Johannes Berg wrote:
> On Mon, 2016-02-08 at 10:11 -0600, Dan Williams wrote:
> > I'd like to clarify a bit, so tell me if I'm correct or not.ÂÂUsing
> > RFKILL_OP_AIRPLANE_MODE_CHANGE does not actually change any device
> > state. It's just an indicator with no relationship to any of the
> > registered rfkill switches, right?
>
> Yes. I'm not sure I'm totally happy with this userspace API.
>
> > I wonder if setting RFKILL_OP_AIRPLANE_MODE_CHANGE(true) shouldn't
> > also
> > softblock all switches, otherwise you can set airplane mode all day
> > long with RFKILL_OP_AIRPLANE_MODE_CHANGE and it doesn't actually
> > enable
> > airplane mode at all?
>
> No, this is kinda the point that you could implement your policy in
> userspace now.

Yeah, I get that now. ÂIt's just that to me, something called
"AIRPLANE_MODE_CHANGE" seems like it should actually change airplane
mode on/off, which implies killing radios. ÂI wouldn't have had the
problem if it was named AIRPLANE_MODE_INDICATOR_CHANGE, which makes it
clear this is simply an indicator and has no actual effect on anything
other than a LED.

Dan