106 lines
3.1 KiB
HTML
106 lines
3.1 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of UUID_TIME</TITLE>
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</HEAD><BODY>
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<H1>UUID_TIME</H1>
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Section: Libuuid API (3)<BR>Updated: May 2009<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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uuid_time - extract the time at which the UUID was created
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<PRE>
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<B>#include <<A HREF="file:///usr/include/uuid.h">uuid.h</A>></B>
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<B>time_t uuid_time(uuid_t </B><I>uu</I><B>, struct timeval *</B><I>ret_tv</I><B>)</B>
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</PRE>
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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The
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<B>uuid_time</B>
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function extracts the time at which the supplied time-based UUID
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<I>uu</I>
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was created. Note that the UUID creation time is only encoded within
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certain types of UUIDs. This function can only reasonably expect to
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extract the creation time for UUIDs created with the
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<B><A HREF="/cgi-bin/man/man2html?3+uuid_generate_time">uuid_generate_time</A></B>(3)
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and
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<B><A HREF="/cgi-bin/man/man2html?3+uuid_generate_time_safe">uuid_generate_time_safe</A></B>(3)
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functions. It may or may not work with UUIDs created by other mechanisms.
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<A NAME="lbAE"> </A>
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<H2>RETURN VALUES</H2>
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The time at which the UUID was created, in seconds since January 1, 1970 GMT
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(the epoch), is returned (see
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<B><A HREF="/cgi-bin/man/man2html?2+time">time</A></B>(2)).
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The time at which the UUID was created, in seconds and microseconds since
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the epoch, is also stored in the location pointed to by
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<I>ret_tv</I>
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(see
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<B><A HREF="/cgi-bin/man/man2html?2+gettimeofday">gettimeofday</A></B>(2)).
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<A NAME="lbAF"> </A>
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<H2>AUTHOR</H2>
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Theodore Y. Ts'o
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<A NAME="lbAG"> </A>
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<H2>AVAILABILITY</H2>
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<B>libuuid</B>
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is part of the util-linux package since version 2.15.1 and is available from
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<A HREF="https://www.kernel.org/pub/linux/utils/util-linux/.">https://www.kernel.org/pub/linux/utils/util-linux/.</A>
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<A NAME="lbAH"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?3+uuid">uuid</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+uuid_clear">uuid_clear</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+uuid_compare">uuid_compare</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+uuid_copy">uuid_copy</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+uuid_generate">uuid_generate</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+uuid_is_null">uuid_is_null</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+uuid_parse">uuid_parse</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+uuid_unparse">uuid_unparse</A></B>(3)
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="1"><A HREF="#lbAB">NAME</A><DD>
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<DT id="2"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="3"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="4"><A HREF="#lbAE">RETURN VALUES</A><DD>
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<DT id="5"><A HREF="#lbAF">AUTHOR</A><DD>
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<DT id="6"><A HREF="#lbAG">AVAILABILITY</A><DD>
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<DT id="7"><A HREF="#lbAH">SEE ALSO</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:59 GMT, March 31, 2021
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