From: Oliver Neukum <oliver@neukum.org>
To: Dan Kegel <dank@kegel.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Ulrich Drepper <drepper@redhat.com>
Subject: Re: [PATCH] new syscall: flink
Date: Sun, 6 Apr 2003 21:56:37 +0200 [thread overview]
Message-ID: <200304062156.37325.oliver@neukum.org> (raw)
In-Reply-To: <3E907A94.9000305@kegel.com>
> Andrew Brown <atatat@atatdot.net> wrote:
> ># as for flink(2), no. flink(2) would be a terribly bad idea. consider
> ># that when opening a file, *all* the permissions on *all* the inodes in
> ># the path to the file are considered. if you were able to get some
> ># process to hand you an open file descriptor to some file somewhere
> ># that relies on being protected by permissions in the path and you were
> ># able to flink(2) it to some arbitrary name, you could bypass the
> ># permissions set that had been established.
If you have an fd, the permissions based on the path are already
bypassed, whether you can call flink or not, aren't they?
Regards
Oliver
next prev parent reply other threads:[~2003-04-06 19:45 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-06 19:05 Dan Kegel
2003-04-06 19:07 ` Dan Kegel
2003-04-06 19:56 ` Oliver Neukum [this message]
2003-04-06 20:08 ` Malcolm Beattie
2003-04-06 20:33 ` Oliver Neukum
2003-04-06 21:12 ` Alan Cox
2003-04-07 2:33 ` H. Peter Anvin
2003-04-07 2:29 ` David Wagner
2003-04-07 9:09 ` Malcolm Beattie
2003-04-07 11:02 ` Olivier Galibert
2003-04-07 5:25 ` H. Peter Anvin
2003-04-07 6:43 ` David Wagner
2003-04-07 6:21 ` Vitaly
2003-04-07 16:17 ` Shaya Potter
-- strict thread matches above, loose matches on Subject: below --
2003-04-11 17:11 Clayton Weaver
2003-04-10 22:10 Clayton Weaver
2003-04-11 1:02 ` David Wagner
2003-04-10 0:31 Clayton Weaver
2003-04-08 13:06 Chuck Ebbert
2003-04-07 23:57 Chuck Ebbert
2003-04-07 16:50 Clayton Weaver
2003-04-07 17:11 ` Arjan van de Ven
2003-04-07 17:37 ` David Wagner
2003-04-07 18:43 ` Werner Almesberger
2003-04-08 5:06 ` Werner Almesberger
2003-04-07 20:35 ` H. Peter Anvin
2003-04-07 9:01 Clayton Weaver
[not found] <20030407102005.4c13ed7f.manushkinvv@desnol.ru>
[not found] ` <200304070709.h37792815083@mozart.cs.berkeley.edu>
2003-04-07 7:35 ` Vitaly
2003-04-07 14:57 ` H. Peter Anvin
2003-04-07 18:47 ` Wichert Akkerman
2003-04-07 20:05 ` Bill Rugolsky Jr.
2003-04-07 20:32 ` H. Peter Anvin
2003-04-07 2:56 Mark Grosberg
2003-04-07 3:39 ` H. Peter Anvin
2003-04-07 7:29 ` Miquel van Smoorenburg
2003-04-07 8:18 ` Olivier Galibert
2003-04-07 8:35 ` Jakub Jelinek
2003-04-07 9:11 ` Olivier Galibert
2003-04-07 11:13 ` Alan Cox
2003-04-07 12:31 ` Roman Zippel
2003-04-07 12:54 ` Andreas Schwab
2003-04-07 13:19 ` Roman Zippel
2003-04-07 20:55 ` Fredrik Tolf
2003-04-07 21:43 ` Ulrich Drepper
2003-04-07 22:17 ` Fredrik Tolf
2003-04-07 22:25 ` Ulrich Drepper
2003-04-07 22:55 ` Fredrik Tolf
2003-04-06 18:39 Ulrich Drepper
2003-04-07 17:35 ` Linus Torvalds
2003-04-07 20:37 ` H. Peter Anvin
2003-04-08 0:23 ` Ulrich Drepper
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