svn commit: r336731 - projects/bectl/sbin/bectl

[Kyle Evans]

On Thu, Jul 26, 2018 at 9:07 AM, Shawn Webb <shawn.webb at hardenedbsd.org> wrote:
> On Thu, Jul 26, 2018 at 08:47:30AM -0500, Kyle Evans wrote:
>> On Thu, Jul 26, 2018 at 8:32 AM, Rodney W. Grimes
>> <freebsd at pdx.rh.cn85.dnsmgr.net> wrote:
>> > -- Start of PGP signed section.
>> >> On Thu, Jul 26, 2018 at 04:07:37AM +0000, Kyle Evans wrote:
>> >> > Author: kevans
>> >> > Date: Thu Jul 26 04:07:36 2018
>> >> > New Revision: 336731
>> >> > URL: https://svnweb.freebsd.org/changeset/base/336731
>> >> >
>> >> > Log:
>> >> >   bectl(8): Redo jail using jail(3) API
>> >> >
>> >> >   The jail is created with allow.mount, allow.mount.devfs, and
>> >> >   enforce_statfs=1. Upon creation, we immediately attach, chdir to "/", and
>> >> >   drop the user into a shell inside the jail.
>> >> >
>> >> >   The default IP for this is arbitrarily 10.20.30.40.
>> >>
>> >> It seems this would only allow working in a single jailed BE at a
>> >> time, correct?
>> >
>> > Also it is just bad practice to use arbitrary IP's from
>> > rfc1918 space.   IMHO it would be better to pick a
>> > rfc3927 link local address, or one of the rfc5737 test
>> > network addresses.
>> >
>> > Please see RFC5735 page 6, table in section 4, no
>> > place in FreeBSD base system should we be shipping
>> > stuff that uses rfc1918, that is private space that
>> > does not belong to the OS.
>> >
>>
>> Right on both accounts (Shawn + Rod)... I changed it from an arbitrary
>> IP in 192.168/16 space that was conflicting with my local network
>> (heh... that was fun) with the intent of later changing it to just be
>> configurable rather than hard-coding an IP [1] because I think that no
>> matter what choice I try to go with, someone's going to want something
>> else. I'd rather not make such choices at all and force you to instead
>> specify an IP every time, a la "bectl jail testenv 10.8.0.100".
>
> Or perhaps to jail the BE without an IP at all. Sometimes all I want
> to do before rebooting into a new BE is just set an rc.conf value
> (disable a service, for example).
>
> Also, as we look forward to IPv6, it would be nice if IPv6 was
> supported as well.
>

As I said in the e-mail you guys are replying to, I plan on getting
out of the IP game because this game sucks. =) If it's useful, `bectl
jail` could grow the ability to specify jail parameters via -o, e.g.
`bectl jail -o ip4.addr=... -o ip6.addr=... -o allow.mount=false
testenv ...`