F12: /var/run/utmp: what is it for?

[Daniel B. Thurman]

Is /var/run/utmp supposed to contain anything?

I note that for some reason or another selinux attempts
to read or write in this area and I fail to understand what
it is used for.  This directory contains nothing in it.

Yes, I posted the specific avc denial in selinux group and
could setup a policy to allow access to it but I'd like to
know what I am getting into before proceeding.