From: Oleg Nesterov <oleg@tv-sign.ru>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
Pavel Emelyanov <xemul@openvz.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/3] fix setsid() for sub-namespace /sbin/init
Date: Mon, 26 Nov 2007 17:43:42 +0300 [thread overview]
Message-ID: <20071126144342.GA17265@tv-sign.ru> (raw)
In-Reply-To: <20071126142553.GA16525@tv-sign.ru>
On 11/26, Oleg Nesterov wrote:
>
> sys_setsid() still deals with pid_t's from the global namespace. This means
> that the "session > 1" check can't help for sub-namespace init, setsid() can't
> succeed because copy_process(CLONE_NEWPID) populates PIDTYPE_PGID/SID links.
>
> Remove the usage of task_struct->pid and convert the code to use "struct pid".
> This also simplifies and speedups the code, saves one find_pid().
Паша, глянь пжалста. Я не думаю, что это нужно для 2.6.24, bug (если я еще раз
не ошибся и он есть) очень мелкий, но все-таки...
Вопрос. вот у нас есть task_struct *p = find_task_by_vpid(pid), почему у нас нет
хелпера получить его pid_t ? task_pid_vnr() вернет не то, что нужно (что уже не
очень хорошо с точки зрения именования ;), и мы должны делать
task_pid_nr_ns(p, current->nsproxy->pid_ns);
УЖОС!!! :-(
Oleg.
next prev parent reply other threads:[~2007-11-26 14:43 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-26 14:25 [PATCH 1/3] fix setsid() for sub-namespace /sbin/init Oleg Nesterov
2007-11-26 14:43 ` Oleg Nesterov [this message]
2007-11-26 15:00 ` Pavel Emelyanov
2007-11-26 19:16 ` Eric W. Biederman
2007-11-26 20:11 ` Oleg Nesterov
2007-11-26 21:40 ` Eric W. Biederman
2007-11-26 22:46 ` Oleg Nesterov
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=20071126144342.GA17265@tv-sign.ru \
--to=oleg@tv-sign.ru \
--cc=akpm@linux-foundation.org \
--cc=ebiederm@xmission.com \
--cc=linux-kernel@vger.kernel.org \
--cc=xemul@openvz.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