From: Kees Cook <keescook@chromium.org>
To: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Oleg Nesterov <oleg@redhat.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Pavel Emelyanov <xemul@parallels.com>, Tejun Heo <tj@kernel.org>,
Matt Helsley <matthltc@us.ibm.com>,
Andrew Vagin <avagin@openvz.org>, Pedro Alves <palves@redhat.com>
Subject: Re: [patch 2/2] c/r: prctl: Add ability to get clear_tid_address
Date: Mon, 19 Mar 2012 09:51:36 -0700 [thread overview]
Message-ID: <CAGXu5jJq5yQDadMpRasXNOV3=auRF5WbyyEf3bodf42veg9F0g@mail.gmail.com> (raw)
In-Reply-To: <20120316210343.993662395@openvz.org>
On Fri, Mar 16, 2012 at 1:55 PM, Cyrill Gorcunov <gorcunov@openvz.org> wrote:
> Zero is written at clear_tid_address, when
> the process exits. This functionality is used
> by pthread_join().
>
> We already have sys_set_tid_address() to change this
> address for current task but there is no way to obtain
> it from a user space.
Is it worth introducing a syscall for this just for symmetry? I
suspect not, in which case:
Acked-by: Kees Cook <keescook@chromium.org>
-Kees
--
Kees Cook
ChromeOS Security
next prev parent reply other threads:[~2012-03-19 16:51 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-16 20:55 [patch 0/2] [PATCH 0/2] prctl extension in a sake of c/r Cyrill Gorcunov
2012-03-16 20:55 ` [patch 1/2] c/r: prctl: Add ability to set new mm_struct::exe_file Cyrill Gorcunov
2012-03-19 22:15 ` Andrew Morton
2012-03-19 22:39 ` Cyrill Gorcunov
2012-03-19 22:41 ` richard -rw- weinberger
2012-03-19 22:46 ` Andrew Morton
2012-03-19 22:50 ` Cyrill Gorcunov
2012-03-19 22:59 ` Andrew Morton
2012-03-19 23:12 ` Cyrill Gorcunov
2012-03-19 23:02 ` richard -rw- weinberger
2012-03-19 23:17 ` Cyrill Gorcunov
2012-03-19 23:23 ` richard -rw- weinberger
2012-03-20 6:55 ` Cyrill Gorcunov
2012-03-22 23:38 ` Eric W. Biederman
2012-03-23 6:41 ` Cyrill Gorcunov
2012-03-23 6:47 ` Cyrill Gorcunov
2012-03-23 17:06 ` Matt Helsley
2012-03-19 22:47 ` Cyrill Gorcunov
2012-03-16 20:55 ` [patch 2/2] c/r: prctl: Add ability to get clear_tid_address Cyrill Gorcunov
2012-03-19 16:51 ` Kees Cook [this message]
2012-03-19 16:55 ` Cyrill Gorcunov
-- strict thread matches above, loose matches on Subject: below --
2012-03-09 21:41 [patch 0/2] c/r update to prctl Cyrill Gorcunov
2012-03-09 21:41 ` [patch 2/2] c/r: prctl: Add ability to get clear_tid_address Cyrill Gorcunov
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