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List:       freebsd-hackers
Subject:    Re: Jail seperation patch
From:       Pawel Jakub Dawidek <nick () garage ! freebsd ! pl>
Date:       2003-02-27 15:43:51
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On Thu, Feb 27, 2003 at 07:16:15AM -0800, Mooneer Salem wrote:
+> Actually, I just gave it blah.lifeafterking.org in /etc/hosts. 10.0.0.4
+> really *is* in the same jail:
+> 
+> %ifconfig
+> lnc0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
+>         inet 10.0.0.3 netmask 0xffffffff broadcast 10.0.0.3
+>         inet 10.0.0.4 netmask 0xffffffff broadcast 10.0.0.4
+>         ether 00:50:56:e0:26:54
+> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
+> %hostname
+> test.lifeafterking.org
+> %

Ehh, so now I know nothing about your test settings. After all problems
isn't so trivial.

+> As for the hide files code, I found a possible location for it, in
+> vfs_subr.c (extattr_check_cred()). I added
+> this block to it:
[...]

IMHO very dirty and not complete. Jail don't have to be chrooted to
diferent mount-point, and checks like those should be done between
vnodes, not pathnames.

In my opinion better way is just create another jail and don't give
access to main host for regular users.

-- 
Pawel Jakub Dawidek
UNIX Systems Administrator
http://garage.freebsd.pl
Am I Evil? Yes, I Am.

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