This is the mail archive of the
libc-alpha@sourceware.org
mailing list for the glibc project.
Re: [PING^2] RFC [PATCH] BZ#1077902: New API gettimezone
- From: P J P <pj dot pandit at yahoo dot co dot in>
- To: "libc-alpha at sourceware dot org" <libc-alpha at sourceware dot org>
- Date: Thu, 1 May 2014 15:05:12 +0800 (SGT)
- Subject: Re: [PING^2] RFC [PATCH] BZ#1077902: New API gettimezone
- Authentication-results: sourceware.org; auth=none
- References: <1396499286 dot 85118 dot YahooMailNeo at web192405 dot mail dot sg3 dot yahoo dot com> <1397301884 dot 32837 dot YahooMailNeo at web192402 dot mail dot sg3 dot yahoo dot com> <534971E4 dot 6060001 at cs dot ucla dot edu> <53497633 dot 6060804 at redhat dot com> <1397324033 dot 69177 dot YahooMailNeo at web192403 dot mail dot sg3 dot yahoo dot com> <5349A4B0 dot 2070206 at redhat dot com> <1397375798 dot 36419 dot YahooMailNeo at web192401 dot mail dot sg3 dot yahoo dot com> <1397414803 dot 70882 dot YahooMailNeo at web192403 dot mail dot sg3 dot yahoo dot com> <534B8A9F dot 8030806 at redhat dot com> <1397469748 dot 42212 dot YahooMailNeo at web192405 dot mail dot sg3 dot yahoo dot com> <1398146221 dot 72442 dot YahooMailNeo at web192403 dot mail dot sg3 dot yahoo dot com> <1398755742 dot 94004 dot YahooMailNeo at web192405 dot mail dot sg3 dot yahoo dot com> <535F74EE dot 8010002 at redhat dot com> <1398775268 dot 92264 dot YahooMailNeo at web192405 dot mail dot sg3 dot yahoo dot com> <535FC11B dot 3000906 at cs dot ucla dot edu> <1398801168 dot 81041 dot YahooMailNeo at web192406 dot mail dot sg3 dot yahoo dot com> <5360378D dot 1060306 at cs dot ucla dot edu> <1398872997 dot 84757 dot YahooMailNeo at web192402 dot mail dot sg3 dot yahoo dot com> <53614148 dot 90603 at cs dot ucla dot edu> <5361D8D1 dot 60400 at redhat dot com> <5361E805 dot 9080606 at cs dot ucla dot edu>
- Reply-to: P J P <pj dot pandit at yahoo dot co dot in>
> On Thursday, 1 May 2014 11:52 AM, Paul Eggert wrote:
> But there is a programmatic API, namely getenv ("TZ").
It requires that TZ is defined and exported on the host. Currently not done by default. And since TZ is not defined, we need a way to determine current system time zone as identified by '/etc/localtime'.
> If the chrooted files are identical, and if the TZ value (or lack of value) is
> propagated into the chrooted process, localtime should behave the same
> way inside the chrooted jail as it does outside.
If '/etc/localtime' is accessible inside chroot(2) jail, there is no need to set TZ variable.
> That is, it's not necessary to set TZ to the same string both inside and
> outside the jail. All that's necessary is that if TZ is set outside the
> jail, it must be set to the same value inside the jail, and vice versa.
If TZ is set outside the jail, why wouldn't it be accessible inside the jail?
The whole issue exists because TZ is not set by default. And even if you set it to 'TZ=Region/City' format, it requires that the said file is accessible inside chroot(2) jail, which is not always possible.
---
Regards
-Prasad
http://feedmug.com