From owner-freebsd-stable@FreeBSD.ORG  Wed Nov 29 16:38:46 2006
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Date: Wed, 29 Nov 2006 18:36:53 +0200
From: Stefan Lambrev <stefan.lambrev@sun-fish.com>
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Subject: weird permitions
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Hello,

Can someone explain to me why next can happened on freebsd:
1. add 2 users in same group - user test and test-ro in group test
2. as user test: cd /home/test ; mkdir test; chmod 775 test; echo 
"asdasd" > ~/test/del.me
3. su - test-ro ; cd /home/test; vim del.me - make changes; force save (:x!)

ls -l
total 2
-rw-r--r--  1 test-ro  test  10 Nov 29 18:19 del.me (how is that possible ?)

back "su - test" and try to edit this file - impossible!

I do not know what the RFC says about it, but it is ultra weird for me
that such ownership takeover is possible.

6.2-PRERELEASE FreeBSD Fri Oct 27 19:53:30 amd64

-- 
Best Wishes,
Stefan Lambrev
ICQ# 24134177