RFC: new rc.d/jail changes (templating fstab entries and rootdir)

[Florent Thoumie]

If you're reading this mailing list attentively, you surely already
noticed those lines in last bugmaster mail :

o [2006/06/09] conf/98758  rc  [patch] Templatize 'jail_fstab' in /etc/r
o [2006/06/12] conf/98846  rc  [patch] Templatize 'jail_rootdir' in /etc

While I share Sergey's idea of templating things where possible, I don't
like having %%FOO%% everywhere.

I've written a patch which seems to address both of these "issues".

Basically, it's used like this :

jail_rootdir="\${_name}"
jail_rootdir="\${_hostname}"
jail_rootdir="\${_ip}"

jail_mount_list="ports" or
jail_<jname>_mount_list="ports"

jail_mount_ports_args="-t nullfs /usr/ports \${_rootdir}/usr/ports"

Obviously I preferred my way to do those things but I'd like to get some
review before it makes it to the tree.

Patch is here : http://people.freebsd.org/~flz/local/jail-tpl.diff

-- 
Florent Thoumie
flz at FreeBSD.org
FreeBSD Committer
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