From owner-freebsd-hackers@FreeBSD.ORG  Thu Sep 13 07:23:19 2007
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Date: Thu, 13 Sep 2007 02:56:09 -0400
From: Ighighi <ighighi@gmail.com>
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Subject: local "jailed" symlinks
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I run multiple operating systems on my PC and access their filesystems
from FreeBSD.  Recently I've been playing with the idea that it may be
useful to have a mount flag similar to MNT_NOSYMFOLLOW that restricts
symbolic links in the flagged filesystems to them, that at least avoids
crossing to parent directories on different filesystems.  A "jailed
symlink" of sorts.  I believe that making the root directory the mount
point when performing lookups is the way to go.

What are the issues that I need to be aware of ?
Any suggestions are welcome.

Cheers,
Igh.