From: Ulrich Drepper <drepper@redhat.com>
To: Kees Cook <kees.cook@canonical.com>
Cc: Jakub Jelinek <jakub@redhat.com>,
Arjan van de Ven <arjan@infradead.org>,
Roland McGrath <roland@redhat.com>,
linux-kernel@vger.kernel.org, libc-alpha@sourceware.org
Subject: Re: [PATCH] ELF: implement AT_RANDOM for glibc PRNG seeding
Date: Fri, 03 Oct 2008 10:41:56 -0700 [thread overview]
Message-ID: <48E65964.5020809@redhat.com> (raw)
In-Reply-To: <20081003173313.GW10632@outflux.net>
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Kees Cook wrote:
> +#ifndef ELF_AUXV_RANDOM_SIZE
> +/*
> + * AT_RANDOM provides 16 random bytes which can be used to seed
> + * userspace PRNGs at program load time.
> + */
> +#define ELF_AUXV_RANDOM_SIZE 16
> +#endif
No, this cannot be changeable because there is no way for userland to
find out the size. And no, don't reintroduce the the extra aux vector
entry. Just define it to 16 and that's it.
- --
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)
Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org
iEYEARECAAYFAkjmWWQACgkQ2ijCOnn/RHTbUACfU7i4DImOYXiFNxPa7m7HWiMX
4iQAoLk+7r0bVPGSrjAUcwW701oeDKlJ
=y+Ci
-----END PGP SIGNATURE-----
next prev parent reply other threads:[~2008-10-03 17:43 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20081001201116.GD12527@outflux.net>
[not found] ` <48E3EFD6.2010704@redhat.com>
[not found] ` <20081001215657.GH12527@outflux.net>
[not found] ` <20081001220948.GC32107@sunsite.ms.mff.cuni.cz>
[not found] ` <20081001222706.68E7E1544B4@magilla.localdomain>
2008-10-03 0:16 ` [PATCH] ELF: implement AT_RANDOM for future glibc use Kees Cook
2008-10-03 0:43 ` Jakub Jelinek
2008-10-03 5:25 ` Kees Cook
2008-10-03 5:29 ` Kees Cook
2008-10-03 5:57 ` Arjan van de Ven
2008-10-03 6:25 ` Ulrich Drepper
2008-10-03 14:50 ` [PATCH] ELF: implement AT_RANDOM for glibc PRNG seeding Kees Cook
2008-10-03 14:56 ` Ulrich Drepper
2008-10-03 14:57 ` Jakub Jelinek
2008-10-03 17:33 ` Kees Cook
2008-10-03 17:41 ` Ulrich Drepper [this message]
2008-10-03 17:59 ` [PATCH v5] " Kees Cook
2008-10-18 5:42 ` Ulrich Drepper
2008-10-21 20:01 ` Andrew Morton
2008-10-21 20:22 ` Ulrich Drepper
2008-10-27 5:46 ` Andrew Morton
2008-10-03 0:52 ` [PATCH] ELF: implement AT_RANDOM for future glibc use Roland McGrath
2008-10-03 5:15 ` Kees Cook
2008-10-03 20:22 ` Roland McGrath
2008-10-06 6:00 ` Andi Kleen
2008-10-06 17:50 ` Kees Cook
2008-10-06 18:25 ` David Wagner
2008-10-06 20:23 ` Andi Kleen
2008-10-06 22:16 ` David Wagner
2008-10-06 19:26 ` Andi Kleen
2008-10-06 22:01 ` Kees Cook
2008-10-06 23:19 ` Andi Kleen
2008-10-06 23:29 ` Kees Cook
2008-10-06 23:44 ` Andi Kleen
2008-10-06 22:07 ` Kees Cook
2008-10-06 23:28 ` Andi Kleen
2008-10-06 23:58 ` Roland McGrath
2008-10-07 0:08 ` Ulrich Drepper
2008-10-07 0:31 ` Kees Cook
2008-10-07 0:57 ` Ulrich Drepper
2008-10-07 1:44 ` Kees Cook
2008-10-07 1:51 ` Ulrich Drepper
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=48E65964.5020809@redhat.com \
--to=drepper@redhat.com \
--cc=arjan@infradead.org \
--cc=jakub@redhat.com \
--cc=kees.cook@canonical.com \
--cc=libc-alpha@sourceware.org \
--cc=linux-kernel@vger.kernel.org \
--cc=roland@redhat.com \
/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