atactl equivalent under FreeBSD 9.3R

[Warren Block]

On Sun, 4 Oct 2015, William A. Mahaffey III wrote:

> i.e., no atactl command under FreeBSD 9.3R. Is there an equivalent command 
> under FreeBSD & if so, how's about tipping me off on what it is :-) ? TIA & 
> have a nice weekend.

smartctl (sysutils/smartmontools) can get it, but wants privileged 
access to the device.  Possibly a camcontrol(8) incantation can do it.