For more information on securebits, see the capabilities.7 manpage,
specifically the section entitled

        The "securebits" flags: establishing a capabilities-only environment

To run these tests there are no kernel configuration requirements, but
your kernel must be at least Linux 2.6.32-rc7, and you must have a
/usr/include/linux/securebits.h which defines SECBIT_NOROOT.  You also
need the libcap v2 development libraries installed.

