tzcode: Resurrect tzsetwall(3) with a deprecation warning.
This function has been around since 4.4BSD but was dropped upstream in 2020. This went unnoticed when tzcode was updated. Bring it back, but prepare for removing it before 14.0 is released. PR: 269445 MFC after: 3 days Reported by: val@packett.cool Reviewed by: emaste Differential Revision: https://reviews.freebsd.org/D38445
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@ -1517,9 +1517,8 @@ zoneinit(struct state *sp, char const *name)
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}
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static void
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tzset_unlocked(void)
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tzset_unlocked_name(char const *name)
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{
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char const *name = getenv("TZ");
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struct state *sp = lclptr;
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int lcl = name ? strlen(name) < sizeof lcl_TZname : -1;
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if (lcl < 0
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@ -1541,6 +1540,12 @@ tzset_unlocked(void)
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lcl_is_set = lcl;
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}
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static void
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tzset_unlocked(void)
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{
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tzset_unlocked_name(getenv("TZ"));
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}
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void
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tzset(void)
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{
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@ -1550,6 +1555,18 @@ tzset(void)
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unlock();
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}
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void
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freebsd13_tzsetwall(void)
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{
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if (lock() != 0)
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return;
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tzset_unlocked_name(NULL);
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unlock();
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}
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__sym_compat(tzsetwall, freebsd13_tzsetwall, FBSD_1.0);
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__warn_references(tzsetwall,
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"warning: tzsetwall() is deprecated, use tzset() instead.");
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static void
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gmtcheck(void)
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{
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@ -31,7 +31,7 @@
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.\" @(#)tzset.3 8.2 (Berkeley) 11/17/93
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.\" $FreeBSD$
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.\"
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.Dd November 17, 1993
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.Dd February 8, 2023
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.Dt TZSET 3
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.Os
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.Sh NAME
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@ -102,10 +102,14 @@ is used.
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.Pp
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The
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.Fn tzsetwall
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function
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sets things up so that
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.Xr localtime 3
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returns the best available approximation of local wall clock time.
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function is equivalent to calling
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.Fn tzset
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with the
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.Ev TZ
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environment variable unset.
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It is deprecated and may not be available in
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.Fx 14.0
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and later.
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.Sh SPECIFICATION FORMAT
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When
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.Ev TZ
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