title: Function for returning number of seconds since 1/1/1900
body: <p>Is there a function in the kernel for converting a <code>timespec</code> as returned from eg <code>do_gettimeofday</code> to the number of seconds since 1/1/1900 in a "64-bit unsigned fixed-point number" as described in <a href="http://www.ietf.org/rfc/rfc1305.txt" rel="nofollow">RFC 1305</a>?</p>