Date: Sat, 11 Dec 2004 09:28:57 +0100 From: "Ralf S. Engelschall" <rse+freebsd-hackers@FreeBSD.org> To: freebsd-hackers@freebsd.org Subject: Re: rc.shutdown and jails Message-ID: <20041211082857.GA5218@engelschall.com> In-Reply-To: <20041210234157.478BF840325@mail.npubs.com> References: <20041210180332.GA27788@engelschall.com> <20041210234157.478BF840325@mail.npubs.com>
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On Fri, Dec 10, 2004, Nielsen wrote: > Ralf S. Engelschall wrote: > >Currently a "/etc/rc.d/jail stop" just kills all processes in the > >individual jails. If /etc/default/rc.conf's default way of booting the > >jails (jail_exec="/bin/sh /etc/rc") is used this is a rather crual > >approach IMHO. I think if the jail is booted through /etc/rc it also > >should be given the chance to shutdown via /etc/rc.shutdown. If then > >there are still processes remaining, the killall(1) is fine, of course. > >This way packages and other sub-systems have the chance to perform a > >graceful shutdown. > > Definitely a good plan. You just have to watch out for environment > variable leakage into the jail subsystem when using jexec. A minor > concern, perhaps. > [...] Ok, good point. I think running "env -i /usr/sbin/jexec" instead of just "jexec" is sufficient here because the rc.shutdown reinitializes at least PATH and HOME again and the remaining variables should be not needed for the procedure. -- rse@FreeBSD.org Ralf S. Engelschall FreeBSD.org/~rse rse@engelschall.com FreeBSD committer www.engelschall.com
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