Date: Wed, 6 Jan 2021 00:39:43 +0100 From: Stefan Esser <se@freebsd.org> To: Konstantin Belousov <kostikbel@gmail.com>, Stefan Esser <se@freebsd.org> Cc: Andriy Gapon <avg@freebsd.org>, Warner Losh <imp@bsdimp.com>, FreeBSD Hackers <freebsd-hackers@freebsd.org>, Hal Murray <hmurray@megapathdsl.net> Subject: Re: How does the time zone info get updated? Message-ID: <0e0c7dbb-2036-ef7c-762a-f599cd8c18bc@freebsd.org> In-Reply-To: <X/T0CTFoxO%2BRve4u@kib.kiev.ua> References: <20210105075109.A412C40605C@ip-64-139-1-69.sjc.megapath.net> <4e6721bc-e593-76b6-90f8-03d96486dc28@freebsd.org> <CANCZdfrsxY2-h4NmcnaC16Y_tdpQuxEjPCYgeMvdfqoz5AmzRw@mail.gmail.com> <47c37f75-e082-7a34-7eb6-3ee2a4ade395@freebsd.org> <CANCZdfqv670zxD2gb2q7HU%2B5D2wJeskuTDdmWPf5JyP_ZkLa6w@mail.gmail.com> <02ebd386-a7fd-1816-72b6-3211f4bc69fb@freebsd.org> <358b8939-5ec9-e340-8b06-f362cae38fa0@FreeBSD.org> <b8fcfb94-5002-33dc-3187-5cc3c6d8576d@freebsd.org> <X/T0CTFoxO%2BRve4u@kib.kiev.ua>
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Am 06.01.21 um 00:19 schrieb Konstantin Belousov: > On Wed, Jan 06, 2021 at 12:05:17AM +0100, Stefan Esser wrote: >> I'd rather think we should have the port install files into >> $PREFIX/share/zoneinfo and modify the file lookup to search at >> that location first, before falling back to the base system >> location. >> >> This might require changes to zic, zdump, tzsetup, etcupdate, >> and bsdconfig, which only expect a single path in TZDIR. >> >> This might be considered worse than the port that overwrites >> files in base. > This really requires changes to libc, which implies changed behavior > for all applications. A library routine can easily implement the logic to lookup the zone definitions in a specified sequence in several places. The biggest problem I see is that the /etc/localtime link would point to either a definition in /usr/share/zoneinfo or $LOCALBASE/share/zoneinfo and if a port did update the files below $LOCALBASE when previously files from base had been used, the link would need to be adjusted. I do not consider such a change of a link in /etc by a port to be acceptable behavior, though, and thus the port that overwrites files in /usr/share/zoneinfo actually appears to be the lesser evil ... Regards, STefan PS: Resent from freebsd mail address to have the message be accepted by the list server ...
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