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Re: How to revert RFKILL_IOC_NOINPUT ioctl?

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On Tue, 2016-01-12 at 13:05 +0100, Bastien Nocera wrote:
> 
> I realised looking at the rfkill kernel configuration, and noticed
> that it wasn't possible to disable CONFIG_RFKILL_INPUT without
> enabling the expert mode. "Why" would be the first question in this
> mail.

I guess the answer would be that at the time, you couldn't really get a
fully functional setup without it, and there wasn't really any default
userspace to deal with it. Perhaps there is now at least a bigger
chance that userspace will deal with it.

That said, I don't really see a need to disable this code since
userspace that wants to handle it should use the ioctl to disable the
in-kernel code (if it's at all present.)

> See https://lists.fedoraproject.org/archives/list/kernel@lists.fedora
> project.org/thread/FWCOCU2ODZHK7AQVOWSFJLBXL744LYNO/
> 
> To make my GNOME code work, I'd need to disable rfkill-input. But if
> I still wanted to allow rfkill-input to work when GNOME isn't
> running, such as when switching to a console, or another less-capable 
> desktop environment. But there doesn't seem to be a counterpart
> for RFKILL_IOC_NOINPUT. Any reason why?

It's automatically released when you close the fd.

johannes
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