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From: Ulrich Drepper <drepper@redhat.com>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Mikael Pettersson <mikpe@csd.uu.se>,
	Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Albert Cahalan <albert@users.sourceforge.net>
Subject: Re: Who changed /proc/<pid>/ in 2.6.0-test5-bk9?
Date: Wed, 01 Oct 2003 20:35:21 -0700	[thread overview]
Message-ID: <3F7B9CF9.4040706@redhat.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0310010803530.23860-100000@home.osdl.org>

Linus Torvalds wrote:

> I think /proc/self most likely _should_ point into the thread, not the 
> task. 

As much as I want to not see this, I fear I have to agree.

There is, for instance, no guarantee that all CLONE_THREAD clones also
have CLONE_FILES set.  Then using /proc/self/%d for some thread-local
file descriptor will return the process group leaders file descriptor,
not the own.

-- 
--------------.                        ,-.            444 Castro Street
Ulrich Drepper \    ,-----------------'   \ Mountain View, CA 94041 USA
Red Hat         `--' drepper at redhat.com `---------------------------


  parent reply	other threads:[~2003-10-02  3:35 UTC|newest]

Thread overview: 94+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-09-28  1:27 Linux 2.6.0-test6 Linus Torvalds
2003-09-28  7:03 ` Con Kolivas
2003-09-28 10:02   ` Rob Landley
2003-09-29  4:55     ` Nick Piggin
2003-09-29  7:35       ` Rob Landley
2003-09-29 16:55       ` Ed Sweetman
2003-09-30  0:03         ` Nick Piggin
2003-10-02  0:41         ` Pedro Larroy
2003-10-02  3:05           ` Nick Piggin
2003-10-02 19:07             ` Pedro Larroy
2003-10-03  0:07               ` Nick Piggin
2003-10-03 19:34                 ` Pedro Larroy
2003-09-29 18:45       ` bill davidsen
2003-09-30  1:12         ` Nick Piggin
2003-10-01 21:13           ` bill davidsen
2003-10-02  2:45             ` Nick Piggin
2003-09-28  8:26 ` Markus Hästbacka
2003-09-28 10:54   ` Jeff Garzik
2003-09-28  8:59 ` keyboard repeat / sound [was Re: Linux 2.6.0-test6] Roger Luethi
2003-09-29 15:16   ` Vojtech Pavlik
2003-09-30  7:50     ` Paul
2003-09-30 12:51       ` Vojtech Pavlik
2003-09-30 13:21         ` Aristeu Sergio Rozanski Filho
2003-09-30 13:44           ` Vojtech Pavlik
2003-09-30 14:05             ` Aristeu Sergio Rozanski Filho
2003-09-30 14:16               ` Vojtech Pavlik
2003-10-01 23:51                 ` Aristeu Sergio Rozanski Filho
2003-09-30 18:16               ` Mark W. Alexander
2003-10-01 23:52                 ` Aristeu Sergio Rozanski Filho
2003-09-28 10:09 ` Linux 2.6.0-test6 Rafał 'rmrmg' Roszak
2003-09-28 11:05 ` Andreas Jellinghaus
2003-09-28 12:34   ` Dave Jones
2003-09-28 16:12     ` Andreas Jellinghaus
2003-09-28 17:51       ` Andries Brouwer
2003-09-28 16:42 ` Ivan Gyurdiev
2003-09-28 20:26 ` [patch] 2.6.0-test6: correct hdlcdrv.h prototypes Adrian Bunk
2003-09-29 13:23 ` Linux 2.6.0-test6 Florin Iucha
2003-09-29 13:55   ` Muli Ben-Yehuda
2003-09-29 14:01     ` Jaroslav Kysela
2003-09-29 14:18       ` Muli Ben-Yehuda
2003-09-29 19:04         ` bill davidsen
2003-09-29 14:30       ` Takashi Iwai
2003-09-29 13:58   ` Jaroslav Kysela
2003-09-29 16:30 ` Linux 2.6.0-test6 (compile statistics) John Cherry
2003-09-29 17:44   ` Jesper Juhl
2003-10-06 20:39     ` John Cherry
2003-10-01  8:58 ` Who changed /proc/<pid>/ in 2.6.0-test5-bk9? Mikael Pettersson
2003-10-01 11:52   ` John Levon
2003-10-01 20:21     ` bill davidsen
2003-10-02  1:00       ` John Levon
2003-10-06  3:01         ` bill davidsen
2003-10-01 15:11   ` Linus Torvalds
2003-10-01 20:58     ` bill davidsen
2003-10-01 23:42     ` Albert Cahalan
2003-10-02  0:38       ` Linus Torvalds
2003-10-02  0:57         ` Albert Cahalan
2003-10-02  3:35     ` Ulrich Drepper [this message]
2003-10-02  4:12       ` Albert Cahalan
2003-10-02  4:58         ` Ulrich Drepper
2003-10-02 13:48           ` Albert Cahalan
2003-10-02 17:30             ` Ulrich Drepper
2003-10-03  0:03               ` Albert Cahalan
2003-10-03  0:40                 ` Linus Torvalds
2003-10-03  2:53                   ` Jamie Lokier
2003-10-06  4:54                     ` Mike Fedyk
2003-10-06  2:52                   ` bill davidsen
2003-10-07 23:08                   ` Robert White
2003-10-07 22:46                 ` Robert White
2003-10-07 23:25                   ` Linus Torvalds
2003-10-08  0:41                     ` Robert White
2003-10-08  0:54                       ` Linus Torvalds
2003-10-08  2:31                         ` Robert White
2003-10-08  2:39                           ` David Lang
2003-10-08  2:59                             ` Robert White
2003-10-09 18:25                               ` bill davidsen
2003-10-08  2:47                           ` Who changed /proc/<pid>/ in 2.6.0-test5-bk9? (SIGPIPE?) Robert White
2003-10-08  2:57                             ` Linus Torvalds
2003-10-08  4:01                               ` Robert White
2003-10-08  4:08                                 ` Linus Torvalds
2003-10-08 10:47                         ` Who changed /proc/<pid>/ in 2.6.0-test5-bk9? bert hubert
2003-10-08 19:12                           ` Ulrich Drepper
2003-10-09 18:43                             ` bill davidsen
2003-10-08 21:54                           ` Robert White
2003-10-09 18:12                         ` bill davidsen
2003-10-10  4:39                           ` Jamie Lokier
2003-10-09 17:59                       ` bill davidsen
2003-10-11  3:02                       ` Here is a case that proves my previous position wrong regurading CLONE_THREAD and CLONE_FILES Robert White
2003-10-11  3:48                         ` viro
2003-10-12 11:41                         ` Jamie Lokier
2003-10-02  8:46       ` Who changed /proc/<pid>/ in 2.6.0-test5-bk9? Miquel van Smoorenburg
2003-10-02 22:35         ` Jamie Lokier
2003-10-02 23:43           ` Miquel van Smoorenburg
2003-10-06  2:57         ` bill davidsen
2003-10-02  3:38     ` Ulrich Drepper

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