/sys/class/tty/tty0/active?

[richard -rw- weinberger]

Hi!

systemd goes nuts on UML.
While hunting down all issues I found out that systemd wants to read from
/sys/class/tty/tty0/active.

On UML this directory does not have this "active" file.
[1] indicates that it has something to do with /dev/tty0.
Of course, UML has a /dev/tty0, it's the default console.

But where comes "active" from?
Is there any black magic hidden register API to get this file? ;-)

[1]
http://lists.freedesktop.org/archives/systemd-devel/2011-December/004096.html

-- 
Thanks,
//richard
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