From: Erik Andersen <andersen@codepoet.org>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Kalin KOZHUHAROV <kalin@ThinRope.net>,
Davide Libenzi <davidel@xmailserver.org>,
Robert Love <rml@ximian.com>, Chris Wedgwood <cw@f00f.org>,
Arjan van de Ven <arjanv@redhat.com>,
Russell Leighton <russ@elegant-software.com>,
Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: clone() <-> getpid() bug in 2.6?
Date: Sun, 6 Jun 2004 01:57:54 -0600 [thread overview]
Message-ID: <20040606075754.GA10642@codepoet.org> (raw)
In-Reply-To: <Pine.LNX.4.58.0406052244290.7010@ppc970.osdl.org>
On Sat Jun 05, 2004 at 11:07:25PM -0700, Linus Torvalds wrote:
> qmail is a piece of crap. The source code is completely unreadable, and it
> seems to think that "getpid()" is a good source of random data. Don't ask
> me why.
>
> It literally does things like
>
> random = now() + (getpid() << 16);
[-----------snip-----------]
http://sources.redhat.com/cgi-bin/cvsweb.cgi/~checkout~/libc/sysdeps/posix/tempname.c?rev=1.36&content-type=text/plain&cvsroot=glibc
/* Get some more or less random data. */
random_time_bits = ((uint64_t) tv.tv_usec << 16) ^ tv.tv_sec;
value += random_time_bits ^ __getpid ();
etc....
-Erik
--
Erik B. Andersen http://codepoet-consulting.com/
--This message was written using 73% post-consumer electrons--
next prev parent reply other threads:[~2004-06-06 7:58 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-05 15:28 clone() <-> getpid() bug in 2.6? Russell Leighton
2004-06-05 20:45 ` Linus Torvalds
2004-06-05 20:55 ` Arjan van de Ven
2004-06-05 21:13 ` Linus Torvalds
2004-06-05 21:48 ` Robert Love
2004-06-05 22:44 ` Linus Torvalds
2004-06-05 21:53 ` Chris Wedgwood
2004-06-05 22:47 ` Robert Love
2004-06-05 22:57 ` David S. Miller
2004-06-05 23:01 ` Linus Torvalds
2004-06-05 23:07 ` Davide Libenzi
2004-06-05 23:18 ` Linus Torvalds
2004-06-05 23:26 ` Davide Libenzi
2004-06-06 5:08 ` Kalin KOZHUHAROV
2004-06-06 5:13 ` Chris Wedgwood
2004-06-06 5:34 ` Kalin KOZHUHAROV
2004-06-06 6:07 ` Linus Torvalds
2004-06-06 6:43 ` Kalin KOZHUHAROV
2004-06-06 7:57 ` Erik Andersen [this message]
2004-06-06 16:57 ` Linus Torvalds
2004-06-06 18:53 ` Simon Kirby
2004-06-06 19:00 ` Linus Torvalds
2004-06-06 9:52 ` Bernd Eckenfels
2004-06-06 13:07 ` Paul Rolland
2004-06-06 17:20 ` Patrick J. LoPresti
2004-06-06 17:31 ` Paul Rolland
2004-06-06 17:43 ` Davide Libenzi
2004-06-06 18:17 ` Rik van Riel
2004-06-06 18:37 ` Patrick J. LoPresti
2004-06-06 16:33 ` chris
[not found] ` <200406062022.54320.vda@port.imtp.ilyichevsk.odessa.ua>
2004-06-06 17:55 ` Linus Torvalds
2004-06-07 18:20 ` Bruce Guenter
2004-06-08 11:06 ` Kalin KOZHUHAROV
2004-06-05 23:19 ` Robert Love
2004-06-06 14:29 ` Russell Leighton
2004-06-06 15:38 ` Using getpid() often, another way? [was Re: clone() <-> getpid() bug in 2.6?] Russell Leighton
2004-06-06 15:44 ` Robert Love
2004-06-07 0:20 ` Russell Leighton
2004-06-06 15:58 ` Arjan van de Ven
2004-06-06 23:49 ` Russell Leighton
2004-06-07 12:13 ` Arjan van de Ven
2004-06-07 13:48 ` Sean Neakums
2004-06-07 14:00 ` Christoph Hellwig
2004-06-07 14:10 ` Sean Neakums
2004-06-07 18:42 ` David Mosberger
2004-06-07 23:02 ` Russell Leighton
2004-06-07 23:27 ` David Mosberger
2004-06-08 6:01 ` Arjan van de Ven
2004-06-08 9:48 ` Eric W. Biederman
2004-06-07 0:09 ` Russell Leighton
2004-06-07 12:20 ` Arjan van de Ven
2004-06-06 17:19 ` Linus Torvalds
2004-06-12 9:15 ` Dominik Straßer
2004-06-12 13:47 ` Linus Torvalds
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20040606075754.GA10642@codepoet.org \
--to=andersen@codepoet.org \
--cc=arjanv@redhat.com \
--cc=cw@f00f.org \
--cc=davidel@xmailserver.org \
--cc=kalin@ThinRope.net \
--cc=linux-kernel@vger.kernel.org \
--cc=rml@ximian.com \
--cc=russ@elegant-software.com \
--cc=torvalds@osdl.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox