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"TZ" and chroot() jails
From: |
Philip Prindeville |
Subject: |
"TZ" and chroot() jails |
Date: |
Sat, 09 Dec 2006 00:21:18 -0700 |
User-agent: |
Mozilla Thunderbird 1.0.7-1.3.pp (X11/20060428) |
Hi.
I had a question: after calling tzset(), is there a reliable way
to format the values of tzname[], daylight, and timezone into
a string to pass to setenv("TZ", ...) so that following a chroot(),
strftime() and localtime() continue to generate the correct
values?
Because I noticed that if you call tzset(), then chroot(), and
then any subsequent calls to tzset() happen (I think that
syslog() calls strftime_r() which calls tzset()), then the
subsequent calls to tzset() will clobber the previously good
values.
It's unfortunate that tzset() isn't idempotent following
initial success.
Thanks,
-Philip
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