2009-05-15 18:01:36 -05:00
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.\" Copyright 1999 Andreas Dilger (adilger@enel.ucalgary.ca)
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.\"
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.\" %Begin-Header%
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" products derived from this software without specific prior
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.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
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.\" %End-Header%
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.\"
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.\" Created Wed Mar 10 17:42:12 1999, Andreas Dilger
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2010-11-30 04:41:59 -06:00
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.TH UUID_TIME 3 "May 2009" "util-linux" "Libuuid API"
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.SH NAME
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uuid_time \- extract the time at which the UUID was created
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.SH SYNOPSIS
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.nf
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2011-10-27 16:28:05 -05:00
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.B #include <uuid.h>
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.sp
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.BI "time_t uuid_time(uuid_t " uu ", struct timeval *" ret_tv )
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.fi
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.SH DESCRIPTION
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The
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.B uuid_time
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function extracts the time at which the supplied time-based UUID
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.I uu
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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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.BR uuid_generate_time (3)
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2011-02-14 07:43:30 -06:00
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and
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.BR uuid_generate_time_safe (3)
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functions. It may or may not work with UUIDs created by other mechanisms.
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2020-05-21 02:33:15 -05:00
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.SH RETURN VALUE
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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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.BR time "(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
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(see
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.BR gettimeofday "(2))."
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2020-05-19 07:51:28 -05:00
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.SH AUTHORS
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2014-05-01 21:37:39 -05:00
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Theodore Y.\& Ts'o
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2020-05-19 03:31:19 -05:00
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.SH SEE ALSO
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2020-05-21 02:28:21 -05:00
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.na
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2009-05-15 18:01:36 -05:00
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.BR uuid (3),
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.BR uuid_clear (3),
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.BR uuid_compare (3),
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.BR uuid_copy (3),
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.BR uuid_generate (3),
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.BR uuid_is_null (3),
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.BR uuid_parse (3),
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.BR uuid_unparse (3)
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2014-05-01 21:37:39 -05:00
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.ad
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2020-05-21 02:28:21 -05:00
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.SH AVAILABILITY
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.B libuuid
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is part of the util-linux package since version 2.15.1 and is available from
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https://www.kernel.org/pub/linux/utils/util-linux/.
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