gentoo-overlay/app-admin/ulogd/files/ulogd.logrotate

/var/log/ulogd/*.log {
    sharedscripts
    missingok
    notifempty
    create 0640 ulogd
    postrotate
        [ -f /run/ulogd.pid ] && /bin/kill -HUP $(cat /run/ulogd.pid)
    endscript
}