In message <cadlo838vov_xi+a_wjd3h7e_d4qi+odjynhpoim5bbzawnx...@mail.gmail.com>
, Chris Rees writes:

>It would certainly prevent many common problems when setting up jails;
>UID collision is much more common than you'd think, given that the
>default UIDs remain the same.

Uhm... jails have separate UID/GID spaces.

Filesystems mounted or visible in multiple jails act as shared UID/GID
(sub-)spaces for those jails, but there is now way to avoid that, it's
a direct consequence of the sharing of the filesystems.


-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
p...@freebsd.org         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
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