From: Davide Libenzi <davidel@xmailserver.org>
To: Ulrich Drepper <drepper@redhat.com>
Cc: Eric Dumazet <dada1@cosmosbay.com>,
Kyle Moffett <mrmacman_g4@mac.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@elte.hu>
Subject: Re: [patch 7/8] fdmap v2 - implement sys_socket2
Date: Thu, 7 Jun 2007 14:44:21 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.64.0706071438020.6445@alien.or.mcafeemobile.com> (raw)
In-Reply-To: <46686810.6030805@redhat.com>
On Thu, 7 Jun 2007, Ulrich Drepper wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Eric Dumazet wrote:
> > I am afraid randomization wont really work if /sbin/init or /bin/bash
> > for example uses one (or more) unseq fd :
> > The 'random base' will be propagated at fork()/exec() time ?
>
> The base certainly should be reset o fork. Yes, this might expand the
> region in which descriptors are allocated due to inherited descriptors.
> But I consider this the application's problem and it usually is not
> really an issue. Apps have to explicitly request using the new
> descriptors and they can use CLOEXEC (CLOFORK) correctly.
This is kinda fishy. We'll end up with very large map with lots of
unused space in them.
What we can sanily do, is re-random the base if no fds are in there (of
course CLOFORK and CLOEXEC do not count).
- Davide
next prev parent reply other threads:[~2007-06-07 21:44 UTC|newest]
Thread overview: 129+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-06 22:30 Davide Libenzi
2007-06-06 22:44 ` David Miller
2007-06-06 22:52 ` Davide Libenzi
2007-06-06 22:57 ` David Miller
2007-06-06 22:57 ` Ulrich Drepper
2007-06-06 23:02 ` David Miller
2007-06-06 22:59 ` Alan Cox
2007-06-06 22:58 ` Ulrich Drepper
2007-06-06 23:04 ` Davide Libenzi
2007-06-06 23:08 ` David Miller
2007-06-06 23:19 ` Alan Cox
2007-06-06 23:22 ` Ulrich Drepper
2007-06-07 10:04 ` Alan Cox
2007-06-07 11:59 ` Kyle Moffett
2007-06-07 13:12 ` Eric Dumazet
2007-06-07 15:51 ` Davide Libenzi
2007-06-07 19:49 ` Davide Libenzi
2007-06-07 20:02 ` Ulrich Drepper
2007-06-07 20:05 ` Eric Dumazet
2007-06-07 20:18 ` Ulrich Drepper
2007-06-07 21:44 ` Davide Libenzi [this message]
2007-06-07 22:03 ` Ulrich Drepper
2007-06-07 22:40 ` Davide Libenzi
2007-06-08 12:07 ` Theodore Tso
2007-06-08 13:01 ` Alan Cox
2007-06-08 18:11 ` Davide Libenzi
2007-06-08 18:26 ` Alan Cox
2007-06-08 18:43 ` Ulrich Drepper
2007-06-08 18:46 ` Al Viro
2007-06-08 18:56 ` Ulrich Drepper
2007-06-08 19:07 ` Linus Torvalds
2007-06-08 19:21 ` Davide Libenzi
2007-06-09 0:03 ` Linus Torvalds
2007-06-09 0:13 ` Davide Libenzi
2007-06-09 0:36 ` Al Viro
2007-06-09 1:19 ` Ulrich Drepper
2007-06-09 1:41 ` Al Viro
2007-06-09 2:10 ` Ulrich Drepper
2007-06-09 15:15 ` Al Viro
2007-06-09 16:26 ` Ulrich Drepper
2007-06-09 16:54 ` Al Viro
2007-06-09 17:04 ` Davide Libenzi
2007-06-09 17:08 ` Davide Libenzi
2007-06-09 17:08 ` Ulrich Drepper
2007-06-09 17:24 ` Al Viro
2007-06-09 19:27 ` Kyle Moffett
2007-06-09 20:06 ` Al Viro
2007-06-09 20:21 ` Linus Torvalds
2007-06-09 20:31 ` Davide Libenzi
2007-06-09 21:41 ` Matt Mackall
2007-06-09 22:12 ` Davide Libenzi
2007-06-09 20:49 ` Al Viro
2007-06-09 21:55 ` Matt Mackall
2007-06-09 23:33 ` Linus Torvalds
2007-06-10 3:35 ` Davide Libenzi
2007-06-10 3:49 ` Davide Libenzi
2007-06-10 3:19 ` Al Viro
2007-06-10 3:48 ` Linus Torvalds
2007-06-10 4:00 ` Al Viro
2007-06-10 4:03 ` Linus Torvalds
2007-06-10 4:06 ` Al Viro
2007-06-10 4:45 ` dean gaudet
2007-06-10 5:06 ` Linus Torvalds
2007-06-10 5:46 ` Al Viro
2007-06-10 17:23 ` Linus Torvalds
2007-06-10 6:35 ` Kari Hurtta
2007-06-10 15:21 ` Alan Cox
2007-06-10 9:14 ` Eric Dumazet
2007-06-10 15:16 ` Alan Cox
2007-06-10 18:19 ` Linus Torvalds
2007-06-10 2:40 ` Al Viro
2007-06-08 19:34 ` Alan Cox
2007-06-08 19:30 ` Alan Cox
2007-06-08 19:37 ` Davide Libenzi
2007-06-08 19:48 ` Alan Cox
2007-06-08 19:51 ` Davide Libenzi
2007-06-08 21:24 ` Alan Cox
2007-06-08 21:59 ` Davide Libenzi
2007-06-08 22:28 ` Alan Cox
2007-06-08 22:38 ` Davide Libenzi
2007-06-11 8:24 ` Xavier Bestel
2007-06-08 19:22 ` Davide Libenzi
2007-06-09 5:41 ` Paul Mackerras
2007-06-09 14:38 ` Kyle Moffett
2007-06-10 6:48 ` Paul Mackerras
2007-06-10 15:56 ` Davide Libenzi
2007-06-10 19:16 ` Davide Libenzi
2007-06-09 17:00 ` Davide Libenzi
2007-06-10 6:26 ` Paul Mackerras
2007-06-10 7:10 ` William Lee Irwin III
2007-06-10 15:52 ` Davide Libenzi
2007-06-08 18:07 ` Davide Libenzi
2007-06-08 18:35 ` Linus Torvalds
2007-06-07 21:57 ` Davide Libenzi
2007-06-08 4:38 ` Eric Dumazet
2007-06-08 5:20 ` Davide Libenzi
2007-06-07 14:25 ` Ulrich Drepper
2007-06-07 17:56 ` Eric Dumazet
2007-06-07 18:03 ` Davide Libenzi
2007-06-07 18:57 ` Eric Dumazet
2007-06-07 18:26 ` Ulrich Drepper
2007-06-07 18:39 ` Davide Libenzi
2007-06-07 18:56 ` Ulrich Drepper
2007-06-07 19:12 ` Davide Libenzi
2007-06-07 20:03 ` Andrew Morton
2007-06-08 2:55 ` Ulrich Drepper
2007-06-08 5:16 ` Davide Libenzi
2007-06-06 23:29 ` Davide Libenzi
2007-06-07 10:06 ` Alan Cox
2007-06-07 10:45 ` Eric Dumazet
2007-06-07 11:27 ` Alan Cox
2007-06-07 15:41 ` Davide Libenzi
2007-06-07 20:10 ` Linus Torvalds
2007-06-07 20:47 ` Eric Dumazet
2007-06-07 21:08 ` Linus Torvalds
2007-06-07 21:41 ` Davide Libenzi
2007-06-07 20:59 ` Guillaume Chazarain
2007-06-07 21:06 ` Guillaume Chazarain
2007-06-07 21:31 ` Ulrich Drepper
2007-06-07 22:22 ` Davide Libenzi
2007-06-07 23:42 ` Linus Torvalds
2007-06-08 0:04 ` Davide Libenzi
2007-06-08 0:59 ` Matt Mackall
2007-06-08 2:25 ` Linus Torvalds
2007-06-08 15:56 ` Jeff Dike
2007-06-07 0:29 ` Arnd Bergmann
2007-06-07 0:33 ` Davide Libenzi
-- strict thread matches above, loose matches on Subject: below --
2007-06-06 22:30 [patch 1/8] fdmap v2 - fdmap core Davide Libenzi
2007-06-07 6:54 ` Eric Dumazet
2007-06-07 7:10 ` Davide Libenzi
2007-06-07 10:39 ` [patch 7/8] fdmap v2 - implement sys_socket2 Eric Dumazet
2007-06-07 15:42 ` Davide Libenzi
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