Using syslog(3) after chroot-ing

[horio shoichi]

On Thu, 1 Jul 2004 08:50:42 +0900
horio shoichi <bugsgrief at bugsgrief.net> wrote:
> On Wed, 30 Jun 2004 15:06:39 -0400
> Charles Swiger <cswiger at mac.com> wrote:
> > On Jun 30, 2004, at 3:00 PM, Mikhail Teterin wrote:
> > > =What happens if you set TZ in the environment which syslogd is started
> > > =up from?
> > >
> > > That's an idea. Can I just call tzset() (or tzsetwall()?) prior to
> > > chroot-ing?
> > 
> > I suspect that you could indeed.  Again, just to be clear: the 
> > timestamps are produced by syslogd, not by the program doing the 
> > logging, so you'd have to change syslogd itself.
> > 
> > -- 
> > -Chuck
> > 
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> > 
> 
> The tzset() alone doesn't fill the gap.
> 
> You need fill /chrootedplace/etc/localtime with valid local time information.
> 
> For syslogd to catch logs, the socket must be captured by it:
> /chrootedplace/{dev/log,var/run/log}, depending on your preference.
> 
> 
> 
> horio shoichi
> 
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> 

My keyboard seems too slippery today. Please read the whole of my message
as: syslog expresses local time through ctime_r() which means tzset() will
be done via /etc/localtime. So, it's sufficient to set /etc/localtime in
the chrooted environment.

(The second paragraph is completely redundant; it's only needed to bring
the syslog messages out of chrooted environment. Sorry.)


horio shoichi