The
devctl_process_running
call returns
true
when a process has the devctl device open for
reading, and
false
otherwise.
One can assume from this that the default
devd(8)
or similar is running when
true
is returned.
Some subsystems will send a message and allow userland to do something
before proceeding with a default action if there's a timeout.
This call allows those subsystems to do the default action right away
when no process is running.
