[systemd-devel] [PATCH] timedated: gather timezone from /etc/localtime sym target

[Frederic Crozat]

Le mercredi 08 août 2012 à 18:51 +0200, Lennart Poettering a écrit :
> On Tue, 07.08.12 00:31, Shawn Landen (shawnlandden at gmail.com) wrote:
> 
> > keep other method for now, consider dropping later.
> > 
> > Supporting relative links here could be problematic as timezones in
> > /usr/share/zoneinfo are often themselves symlinks (and symlinks to
> > symlinks), so this implamentation only only support absolute links.
> 
> Hmm, I am not entirely sure this is really the best thing to do. Always
> requiring a symlink for /etc/localtime breaks a couple of things: we
> can't just bind mount things over in an nspawn container, embedded
> devices have to ship /usr/share/zoneinfo/, which is probably something
> they might want to avoid.
> 
> So, dunno, I think this is something to think about first, discuss the
> pros and cons. I see that just having this as symlink is much simpler,
> no doubt, but does it have more benefits? And possibly more
> disadvantages?

Well, I just found a major disavantage: openSUSE (and YaST) are not
using a symlink for /etc/localtime but a copy of the zoneinfo file (it
is probably coming from support of separate /usr, when mounting /usr
wasn't handled by initrd). So, this must be fixed to
support /etc/localtime being a copy, at least for reading informations
(currently, the code crashes, I'll see if I can fix it).

-- 
Frederic Crozat <fcrozat at suse.com>
SUSE