From: Leah Neukirchen <leah@vuxu.org>
To: Aharon Robbins <arnold@skeeve.com>
Cc: tuhs@tuhs.org
Subject: [TUHS] Re: Off topic: BSD timezone function vs. POSIX timezone variable
Date: Thu, 14 Dec 2023 16:14:16 +0100 [thread overview]
Message-ID: <874jgk7r5j.fsf@vuxu.org> (raw)
In-Reply-To: <E1rDlgD-000Gro-0Y@gleep> (Aharon Robbins's message of "Thu, 14 Dec 2023 05:23:08 -0800")
Aharon Robbins <arnold@skeeve.com> writes:
> Hi All.
>
> This is a bit off-topic, but people here are likely to know the answer.
>
> V7 had a timzone function:
>
> char *timezone(int zone, int dst);
>
> that returned a timezone name. POSIX has a timezone variable which is
> the offset in seconds from UTC.
>
> The man pages for all of {Net,Free,Open}BSD seem to indicate that both
> are available on those systems.
>
> My question is, how? The declarations for both are given as being in <time.h>.
> But don't the symbols in libc.a conflict with each other? How does a programmer
> on *BSD choose which version of timezone they will get?
OpenBSD 7.3 only has "extern long timezone" and no timezone(3) function.
FreeBSD 14.0 only has the timezone(3) function (under _BSD_VISIBLE),
and doesn't set any variables.
--
Leah Neukirchen <leah@vuxu.org> https://leahneukirchen.org/
next prev parent reply other threads:[~2023-12-14 15:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-14 13:23 [TUHS] " Aharon Robbins
2023-12-14 15:14 ` Leah Neukirchen [this message]
2023-12-14 15:49 ` [TUHS] " Chet Ramey
2023-12-21 12:12 ` arnold
2023-12-14 17:28 ` Warner Losh
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