bizarre mount_nullfs issue with jails / ezjail

[Aiza]

Dan Naumov wrote:
>>> An additional question: how come "sade" and "sysinstall" which are run
>>> inside the jail can see (and I can only assume they can also operate
>>> on and damage) the real underlying disks of the host?
>>>
>> Disks (as well as others you have in your host's /dev) aren't visible
>> inside jails.
> 
> Well, somehow they are on my system.
> 
> I guess I should've also clarified that the jail was installed using
> ezjail and not completely manually
> 
>>From /usr/local/etc/ezjail/semipublic
> 
> export jail_semipublic_devfs_enable="YES"
> export jail_semipublic_devfs_ruleset="devfsrules_jail"
> 
> - Sincerely,
> Dan Naumov
> 
> 
You are not in a jail but as the host. Use ezjail-admin console jailname 
and things will look alot different. What you are playing with are 
ezjails system control files.