[systemd-devel] Is it possible to dynamically remove the "uaccess" tag?

[Lennart Poettering]

On Sun, 14.02.16 19:18, Manuel Reimer (Manuel.Spam at nurfuerspam.de) wrote:

> Hello,
> 
> I want to create a daemon which translates inputs, given by an game
> controller (/dev/input/eventX). The default is, that the tag "uaccess" is
> set there.
> 
> As soon as my daemon runs, I don't want to use the original input device.
> Other applications should not connect to the original device but to my
> translated uinput device.
> 
> Currently, the only way to do this seems to be to delete the device nodes,
> which seems to be a bit harsh to me.
> 
> Can someone suggest an alternative way to get rid of what uaccess does as
> long as my daemon is running and handling the device? As far as I can see
> there is no way to remove tags with libudev. It also seems to be impossible
> to set an ACL rule to deny access for everyone. Any other suggestions?

There isn't any concept of ownership in udev, and I am pretty sure
there shouln't be.

input does know one however, in EVIOCGRAB.

Lennart

-- 
Lennart Poettering, Red Hat