jailer in 4.9

[Henrik Motakef]

Chris Jones <cdjones at novusordo.net> writes:

> The jailer command from ports (sysutils/jailer) is very useful for
> running stuff like webservers under user control.  Unfortunately, the
> version in ports doesn't seem to work with 4.9: I get an error
> claiming that jailer couldn't determine whether it was in a jail
> ("Could not determine jailed status.").
>
> Has anyone been able to get jailer working under 4.9?  Did the jail
> system change between 4.8 and 4.9?

Coincidentally, I just set up a fresh 4.9-RELEASE-p1 using jailer
1.1.2, and it seems to work fine so far.

The jailer homepage says "When upgrading from FreeBSD 4.x to 4.8 or
4.x to 5.x you'll need to rebuild jailer and reinstall it in your
jails.", maybe this is the problem?