From owner-freebsd-hackers  Mon Apr  8 10:59:39 2002
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Date: Mon, 8 Apr 2002 20:00:34 +0200
From: =?ISO-8859-2?Q?Pawe=B3_Jakub_Dawidek?= <nick@garage.freebsd.pl>
To: freebsd-hackers@FreeBSD.org
Subject: Hardlinks...
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Hey...

Why I can made hardlink to file that I'm not owner?

Simple example why I think that only owner should have permission to create
hardlinks to his files.

First.
leila:root:~# ls -l /root/very-secret-file
-rw------  1 root  wheel  3011 13 Lut 16:47 /root/very-secret-file

leila:evil-hacker:~> ln /root/very-secret-file ~/whatsthis

<I need remove it fast!!!>
leila:root:~# rm -f /root/very-secret-file

Yes, I know that evil-hacker can't read this file but...
He can't read it NOW, but in a future he can break in and read it.

I know that we can check this with 'st_nlink' or use -P with rm, but...

Or tell me when this feature can help.

--=20
Pawe=B3 Jakub Dawidek
Network Administrator.
Am I Evil? Yes, I Am.

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