From: Linus Torvalds <torvalds@linux-foundation.org>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
"Rafael J. Wysocki" <rjw@sisk.pl>, Ray Lee <ray-lk@madrabbit.org>,
LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] kdesu broken
Date: Tue, 28 Jul 2009 09:52:38 -0700 (PDT) [thread overview]
Message-ID: <alpine.LFD.2.01.0907280949250.3186@localhost.localdomain> (raw)
In-Reply-To: <alpine.LFD.2.01.0907280944150.3186@localhost.localdomain>
On Tue, 28 Jul 2009, Linus Torvalds wrote:
>
> The correct expectation is that the select() (or read()) should have
> returned any data that it saw _before_ it returns EINTR.
Put another way: our pty code is simply _buggy_ if it returns EINTR when
there is actually data pending on a pty.
Yes, it's "buggy" only in a QoI sense - I'm sure that if you read POSIX
and SuS like a language lawyer, there is absolutely zero that says that it
can't return EINTR at any random time, or that the SIGCHLD should be
ordered wrt the other side of the pty having done a write.
But we don't do language-lawyering based on standards that inevitably
never really delve into all the nitty-gritty details. We are simply better
than that. Leave the language-lawyering to the people who can't do things
well, and then whine about their crap being "technically correct".
Linus
next prev parent reply other threads:[~2009-07-28 16:53 UTC|newest]
Thread overview: 104+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-23 23:45 [Regression] " Rafael J. Wysocki
2009-07-24 0:21 ` Ray Lee
2009-07-24 15:21 ` Rafael J. Wysocki
2009-07-24 15:40 ` Alan Cox
2009-07-24 16:34 ` Linus Torvalds
2009-07-25 6:04 ` OGAWA Hirofumi
2009-07-25 13:31 ` Alan Cox
2009-07-25 14:05 ` Alan Cox
2009-07-25 14:55 ` OGAWA Hirofumi
2009-07-25 15:32 ` Alan Cox
2009-07-26 11:51 ` OGAWA Hirofumi
2009-07-27 10:57 ` Alan Cox
2009-07-27 12:07 ` OGAWA Hirofumi
2009-07-27 12:46 ` OGAWA Hirofumi
2009-07-27 13:23 ` [PATCH] " Alan Cox
2009-07-27 13:50 ` OGAWA Hirofumi
2009-07-27 13:58 ` Alan Cox
2009-07-27 15:04 ` OGAWA Hirofumi
2009-07-27 16:14 ` Aneesh Kumar K.V
2009-07-27 16:42 ` Alan Cox
2009-07-27 17:12 ` Aneesh Kumar K.V
2009-07-27 19:28 ` OGAWA Hirofumi
2009-07-27 19:40 ` Linus Torvalds
2009-07-27 20:38 ` OGAWA Hirofumi
2009-07-27 20:45 ` Linus Torvalds
2009-07-27 21:42 ` Alan Cox
2009-07-27 22:04 ` Linus Torvalds
2009-07-27 22:41 ` Alan Cox
2009-07-27 20:52 ` Alan Cox
2009-07-27 21:22 ` Linus Torvalds
2009-07-27 21:54 ` Alan Cox
2009-07-27 21:20 ` Alan Cox
2009-07-28 5:33 ` OGAWA Hirofumi
2009-07-28 10:22 ` Alan Cox
2009-07-28 10:42 ` OGAWA Hirofumi
2009-07-28 15:49 ` Linus Torvalds
2009-07-28 16:42 ` Alan Cox
2009-07-28 16:49 ` Linus Torvalds
2009-07-28 16:52 ` Linus Torvalds [this message]
2009-07-28 17:09 ` Alan Cox
2009-07-28 18:45 ` Linus Torvalds
2009-07-28 17:06 ` Alan Cox
2009-07-28 18:44 ` Linus Torvalds
2009-07-28 18:56 ` Alan Cox
2009-07-28 19:08 ` Linus Torvalds
2009-07-28 19:15 ` Alan Cox
2009-07-28 19:56 ` Greg KH
2009-07-28 20:47 ` Theodore Tso
2009-07-28 21:01 ` Greg KH
2009-07-28 22:02 ` Theodore Tso
2009-07-28 23:49 ` Alan Cox
2009-07-29 0:12 ` Greg KH
2009-07-30 23:16 ` Alan Cox
2009-07-30 23:24 ` Greg KH
2009-07-31 13:49 ` Alan Cox
2009-07-31 14:17 ` Greg KH
2009-07-28 23:46 ` Alan Cox
2009-07-29 0:10 ` Linus Torvalds
2009-07-29 0:26 ` Linus Torvalds
2009-07-29 7:01 ` Aneesh Kumar K.V
2009-07-29 0:34 ` Alan Cox
2009-07-29 1:04 ` Linus Torvalds
2009-07-29 1:23 ` Linus Torvalds
2009-07-29 11:17 ` Alan Cox
2009-07-29 8:59 ` Alan Cox
2009-07-29 15:48 ` Linus Torvalds
2009-07-29 15:55 ` Alan Cox
2009-07-29 16:05 ` Linus Torvalds
2009-07-29 16:39 ` Alan Cox
2009-07-29 19:07 ` Linus Torvalds
2009-07-29 2:50 ` Gene Heskett
2009-07-29 4:49 ` Linus Torvalds
2009-07-29 4:54 ` Linus Torvalds
2009-07-29 5:04 ` Gene Heskett
2009-07-29 5:00 ` Gene Heskett
2009-07-29 5:08 ` Andrew Morton
2009-07-29 7:46 ` Gene Heskett
2009-07-29 11:07 ` Alan Cox
2009-07-29 17:40 ` Gene Heskett
2009-07-29 18:28 ` Frans Pop
2009-07-29 18:43 ` Gene Heskett
2009-07-29 19:08 ` Frans Pop
2009-07-29 19:19 ` Gene Heskett
2009-07-30 12:43 ` Valdis.Kletnieks
2009-07-30 15:35 ` Gene Heskett
2009-07-30 18:39 ` Valdis.Kletnieks
2009-07-31 2:01 ` H. Peter Anvin
2009-07-28 15:48 ` Linus Torvalds
2009-07-28 16:16 ` OGAWA Hirofumi
2009-07-27 18:28 ` Andreas Schwab
2009-07-27 13:58 ` Aneesh Kumar K.V
2009-07-25 20:12 ` [Regression] " Rafael J. Wysocki
2009-07-26 17:41 ` Aneesh Kumar K.V
2009-07-29 2:20 ` Gene Heskett
2009-07-25 11:48 ` Alan Cox
2009-07-25 14:02 ` Frans Pop
2009-07-25 20:16 ` Rafael J. Wysocki
2009-07-25 21:03 ` Alan Cox
2009-07-26 15:51 ` Sergey Senozhatsky
2009-07-24 18:25 ` Aneesh Kumar K.V
2009-07-25 12:07 ` Alan Cox
2009-07-25 16:18 ` Aneesh Kumar K.V
2009-07-25 17:06 ` Aneesh Kumar K.V
2009-07-29 19:09 ` [Regression] kdesu broken, now usb fixed in current git pull Gene Heskett
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