sysctl security.jail.* descriptions

[Fbsd8]

Jamie Gritton wrote:
> On 02/06/13 09:59, Fbsd8 wrote:
>  > Fbsd8 wrote:
>  >> Waitman Gobble wrote:
>  >>> On Feb 6, 2013 7:17 AM, "Fbsd8" <fbsd8 at a1poweruser.com> wrote:
>  >>>> Waitman Gobble wrote:
>  >>>>> On Feb 6, 2013 7:02 AM, "Fbsd8" <fbsd8 at a1poweruser.com> wrote:
>  >>>>>> Where do I find the descriptions of what these jail MIBs do?
> ...
>  >>>>>> security.jail.param.securelevel: 0
>  >>>>>> security.jail.param.path: 1024
>  >>>>>> security.jail.param.name: 256
>  >>>>>> security.jail.param.parent: 0
>  >>>>>> security.jail.param.jid: 0
> ...
>  >>
>  >> What about the other security.jail.param.* MIBs
>  >> where are they documented at?
> 
> In the jail(8) main page, there's the following tidbit:
> 
> | Jails have a set a core parameters, and kernel modules can add their
> | own jail parameters. The current set of available parameters can be
> | retrieved via ``sysctl -d security.jail.param''. Any parameters not
> | set will be given default values, often based on the current
> | environment.
> 
> The sysctls do not themselves have values. Their useful parts are the
> associated types and descriptions (as well as their very existence). The
> descriptions are good for the above-mentioned "sysctl -d", and the types
> are used by jail(8) to know how to set a particular parameter.
> 
>> Rereading the "man jail" for 9.1 talks about securelevel as a jail
>> parammeter. So correct me if I an wrong. All the
>> security.jail.param.* MIBs are set in rc.conf or /etc/jail.conf file
>> on a per jail bases by changing the word "parm" to the jailname?
> 
> There's not always a direct connection between the jail parameters and
> the current rc.conf values. The jail parameters are what you'd use in a
> jail.conf(5) file, or in the "jail_jailname_parameters" rc variable.
> 
> - Jamie
> 

Yes I read man jail and issued the "sysctl -d" to get the list of MIBs I 
posted. So I am still left with no explanation of HOW to code these new 
jail MIBs in 9.X to enable them on a per jail bases.

Any thoughts on how to do that?