From: Larry McVoy <lm@bitmover.com>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: Larry McVoy <lm@bitmover.com>,
linux-kernel@vger.kernel.org, alan@lxorguk.ukuu.org.uk
Subject: Re: AUDIT: copy_from_user is a deathtrap.
Date: Sat, 18 May 2002 21:02:18 -0700 [thread overview]
Message-ID: <20020518210218.P8794@work.bitmover.com> (raw)
In-Reply-To: <20020518200540.N8794@work.bitmover.com> <E179HtC-0001cB-00@wagner.rustcorp.com.au>
On Sun, May 19, 2002 at 02:01:25PM +1000, Rusty Russell wrote:
> But as we all know, it is harder to remove a feature from Linux, than
> to get the camel book through the eye of a needle (or something).
It's possible that I'm too tired to have grasped this, but if I have,
you're all wet. In all cases, read needs to return the number of bytes
successfully moved. If you ask for N and 1/2 of the way through N you
are going to get a fault, and you return SEGFAULT, now how can I ever
find out that N/2 bytes actually made it out to me? I want to know that.
If you are arguing that return N/2 is wrong, you are incorrect.
--
---
Larry McVoy lm at bitmover.com http://www.bitmover.com/lm
next prev parent reply other threads:[~2002-05-19 4:02 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <E178eMm-0000NO-00@wagner.rustcorp.com.au.suse.lists.linux.kernel>
[not found] ` <Pine.LNX.4.44.0205171936220.1524-100000@home.transmeta.com.suse.lists.linux.kernel>
2002-05-18 10:16 ` AUDIT: copy_from_user is a deathtrap Andi Kleen
2002-05-18 16:14 ` Linus Torvalds
2002-05-19 2:10 ` Rusty Russell
2002-05-19 3:01 ` Linus Torvalds
2002-05-19 3:05 ` Larry McVoy
2002-05-19 4:01 ` Rusty Russell
2002-05-19 4:02 ` Larry McVoy [this message]
2002-05-16 23:56 ` Pavel Machek
2002-05-16 23:56 ` Pavel Machek
2002-05-19 3:31 ` Rusty Russell
2002-05-19 3:34 ` Linus Torvalds
2002-05-16 23:53 ` Pavel Machek
2002-05-21 20:47 ` Linus Torvalds
2002-05-21 21:17 ` Pavel Machek
2002-05-21 21:25 ` Linus Torvalds
2002-05-21 21:44 ` Alan Cox
2002-05-21 21:46 ` Andrew Morton
2002-05-21 22:04 ` Linus Torvalds
2002-05-21 22:21 ` Pavel Machek
2002-05-22 13:47 ` Alan Cox
2002-05-22 14:13 ` Pavel Machek
2002-05-22 14:54 ` Alan Cox
2002-05-22 14:42 ` Pavel Machek
2002-05-22 15:27 ` Alan Cox
2002-05-22 18:58 ` Kasper Dupont
2002-05-22 22:02 ` Alan Cox
2002-05-23 3:54 ` Rusty Russell
2002-05-23 11:15 ` Edgar Toernig
2002-05-22 16:09 ` Linus Torvalds
2002-05-22 20:28 ` Pavel Machek
2002-05-22 0:47 ` Andrea Arcangeli
2002-05-22 5:01 ` Rusty Russell
2002-05-22 6:28 ` Rusty Russell
2002-05-22 4:57 ` Rusty Russell
2002-05-22 13:30 ` Alan Cox
2002-05-22 18:43 ` Marco Colombo
2002-05-19 20:23 ` Edgar Toernig
2002-05-19 22:44 ` Alan Cox
2002-05-22 13:40 Petr Vandrovec
2002-05-22 18:58 ` Denis Vlasenko
2002-05-22 14:13 ` Ruth Ivimey-Cook
-- strict thread matches above, loose matches on Subject: below --
2002-05-22 10:08 Petr Vandrovec
2002-05-22 16:23 ` Denis Vlasenko
[not found] <Pine.LNX.4.44.0205191951460.22433-100000@home.transmeta.com.suse.lists.linux.kernel>
[not found] ` <E179fAd-0005vs-00@wagner.rustcorp.com.au.suse.lists.linux.kernel>
2002-05-20 10:59 ` Andi Kleen
2002-05-19 3:38 Rusty Russell
2002-05-19 5:23 ` Linus Torvalds
2002-05-17 0:00 ` Pavel Machek
2002-05-18 21:47 ` Benjamin Herrenschmidt
2002-05-19 12:22 ` Alan Cox
2002-05-19 18:29 ` Linus Torvalds
2002-05-19 19:57 ` Roman Zippel
2002-05-20 2:06 ` Rusty Russell
2002-05-20 2:54 ` Linus Torvalds
2002-05-20 4:53 ` Rusty Russell
2002-05-19 20:12 ` Arnaldo Carvalho de Melo
2002-05-20 16:00 ` Linus Torvalds
2002-05-19 11:41 ` Alan Cox
[not found] <mailman.1021642692.12772.linux-kernel2news@redhat.com>
2002-05-17 17:36 ` Pete Zaitcev
2002-05-18 1:05 ` Rusty Russell
2002-05-18 2:57 ` Alan Cox
2002-05-16 23:27 ` Pavel Machek
[not found] ` <200205191212.g4JCCLY25867@Port.imtp.ilyichevsk.odessa.ua>
[not found] ` <20020520112232.A8983@devserv.devel.redhat.com>
2002-05-21 10:57 ` Denis Vlasenko
2002-05-21 6:21 ` Arnaldo Carvalho de Melo
2002-05-21 8:33 ` Christoph Hellwig
2002-05-21 19:02 ` Albert D. Cahalan
2002-05-22 14:27 ` Denis Vlasenko
2002-05-17 9:27 Rusty Russell
2002-05-17 9:21 ` David S. Miller
2002-05-17 9:49 ` Rusty Russell
2002-05-17 9:35 ` David S. Miller
2002-05-17 12:26 ` Rusty Russell
2002-05-17 17:42 ` Denis Vlasenko
2002-05-17 12:17 ` Alan Cox
2002-05-17 12:21 ` Rusty Russell
2002-05-17 12:58 ` Alan Cox
2002-05-17 12:58 ` Rusty Russell
2002-05-17 13:13 ` John Levon
2002-05-17 14:52 ` Alan Cox
2002-05-18 1:26 ` Rusty Russell
2002-05-17 17:58 ` Denis Vlasenko
2002-05-18 2:37 ` Linus Torvalds
2002-05-18 15:06 ` John Alvord
2002-05-17 10:20 ` Christoph Hellwig
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