From: Gao feng <gaofeng-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
To: "Eric W. Biederman" <ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
Cc: Linux Containers
<containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
Oleg Nesterov <oleg-6lXkIZvqkOAvJsYlp49lxw@public.gmane.org>
Subject: Re: [PATCH 09/11] pidns: Add setns support
Date: Mon, 19 Nov 2012 17:11:58 +0800 [thread overview]
Message-ID: <50A9F7DE.60807@cn.fujitsu.com> (raw)
In-Reply-To: <1353083750-3621-9-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
于 2012年11月17日 00:35, Eric W. Biederman 写道:
> From: "Eric W. Biederman" <ebiederm@xmission.com>
>
> - Pid namespaces are designed to be inescapable so verify that the
> passed in pid namespace is a child of the currently active
> pid namespace or the currently active pid namespace itself.
>
> Allowing the currently active pid namespace is important so
> the effects of an earlier setns can be cancelled.
>
> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
> ---
Hi Eric
I noticed that,after we call setns to change task's pidns to container A's pidns.
we can't see this task in container A's proc filesystem.
Is this what we expected?
Thanks
Gao
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WARNING: multiple messages have this Message-ID (diff)
From: Gao feng <gaofeng@cn.fujitsu.com>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Linux Containers <containers@lists.linux-foundation.org>,
linux-kernel@vger.kernel.org, Oleg Nesterov <oleg@tv-sign.ru>,
Serge Hallyn <serge@hallyn.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 09/11] pidns: Add setns support
Date: Mon, 19 Nov 2012 17:11:58 +0800 [thread overview]
Message-ID: <50A9F7DE.60807@cn.fujitsu.com> (raw)
In-Reply-To: <1353083750-3621-9-git-send-email-ebiederm@xmission.com>
于 2012年11月17日 00:35, Eric W. Biederman 写道:
> From: "Eric W. Biederman" <ebiederm@xmission.com>
>
> - Pid namespaces are designed to be inescapable so verify that the
> passed in pid namespace is a child of the currently active
> pid namespace or the currently active pid namespace itself.
>
> Allowing the currently active pid namespace is important so
> the effects of an earlier setns can be cancelled.
>
> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
> ---
Hi Eric
I noticed that,after we call setns to change task's pidns to container A's pidns.
we can't see this task in container A's proc filesystem.
Is this what we expected?
Thanks
Gao
next prev parent reply other threads:[~2012-11-19 9:11 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-16 16:32 [REVIEW][PATCH 0/11] pid namespace cleanups and enhancements Eric W. Biederman
2012-11-16 16:32 ` Eric W. Biederman
[not found] ` <8739097bkk.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-11-16 16:35 ` [PATCH 01/11] procfs: Use the proc generic infrastructure for proc/self Eric W. Biederman
2012-11-16 16:35 ` Eric W. Biederman
2012-11-16 16:35 ` [PATCH 07/11] pidns: Wait in zap_pid_ns_processes until pid_ns->nr_hashed == 1 Eric W. Biederman
[not found] ` <1353083750-3621-7-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-11-21 2:24 ` Gao feng
2012-11-21 2:24 ` Gao feng
2012-12-19 18:47 ` Oleg Nesterov
2012-12-19 18:47 ` Oleg Nesterov
[not found] ` <20121219184757.GB22991-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-12-21 1:19 ` Eric W. Biederman
2012-12-21 1:19 ` Eric W. Biederman
[not found] ` <87bodourqt.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-12-21 14:11 ` Oleg Nesterov
2012-12-21 14:11 ` Oleg Nesterov
[not found] ` <20121221141133.GA13805-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-12-21 15:02 ` Oleg Nesterov
2012-12-21 15:02 ` Oleg Nesterov
[not found] ` <20121221150238.GA16003-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-12-21 15:31 ` Oleg Nesterov
2012-12-21 15:31 ` Oleg Nesterov
[not found] ` <20121221153152.GA17250-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-12-21 18:42 ` Eric W. Biederman
2012-12-21 18:42 ` Eric W. Biederman
2012-12-21 18:33 ` Eric W. Biederman
2012-12-21 18:33 ` Eric W. Biederman
[not found] ` <1353083750-3621-1-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-11-16 16:35 ` [PATCH 02/11] procfs: Don't cache a pid in the root inode Eric W. Biederman
2012-11-16 16:35 ` Eric W. Biederman
[not found] ` <1353083750-3621-2-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-11-21 1:07 ` Gao feng
2012-11-21 1:07 ` Gao feng
2012-11-16 16:35 ` [PATCH 03/11] pidns: Capture the user namespace and filter ns_last_pid Eric W. Biederman
2012-11-16 16:35 ` Eric W. Biederman
[not found] ` <1353083750-3621-3-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-11-21 1:26 ` Gao feng
2012-11-21 1:26 ` Gao feng
2012-11-16 16:35 ` [PATCH 04/11] pidns: Use task_active_pid_ns where appropriate Eric W. Biederman
2012-11-16 16:35 ` Eric W. Biederman
[not found] ` <1353083750-3621-4-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-11-21 2:02 ` Gao feng
2012-11-21 2:02 ` Gao feng
2012-11-16 16:35 ` [PATCH 05/11] pidns: Make the pidns proc mount/umount logic obvious Eric W. Biederman
2012-11-16 16:35 ` Eric W. Biederman
[not found] ` <1353083750-3621-5-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-11-19 11:02 ` Gao feng
2012-11-19 11:02 ` Gao feng
2012-11-16 16:35 ` [PATCH 06/11] pidns: Don't allow new processes in a dead pid namespace Eric W. Biederman
2012-11-16 16:35 ` Eric W. Biederman
[not found] ` <1353083750-3621-6-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-11-21 2:17 ` Gao feng
2012-11-21 2:17 ` Gao feng
2012-11-16 16:35 ` [PATCH 07/11] pidns: Wait in zap_pid_ns_processes until pid_ns->nr_hashed == 1 Eric W. Biederman
2012-11-16 16:35 ` [PATCH 08/11] pidns: Deny strange cases when creating pid namespaces Eric W. Biederman
2012-11-16 16:35 ` Eric W. Biederman
[not found] ` <1353083750-3621-8-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-11-21 2:25 ` Gao feng
2012-11-21 2:25 ` Gao feng
2012-11-16 16:35 ` [PATCH 09/11] pidns: Add setns support Eric W. Biederman
2012-11-16 16:35 ` Eric W. Biederman
[not found] ` <1353083750-3621-9-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-11-19 9:11 ` Gao feng [this message]
2012-11-19 9:11 ` Gao feng
[not found] ` <50A9F7DE.60807-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2012-11-19 9:27 ` Eric W. Biederman
2012-11-19 9:27 ` Eric W. Biederman
2012-11-21 2:36 ` Gao feng
2012-11-21 2:36 ` Gao feng
2012-11-16 16:35 ` [PATCH 10/11] pidns: Consolidate initialzation of special init task state Eric W. Biederman
2012-11-16 16:35 ` Eric W. Biederman
[not found] ` <1353083750-3621-10-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-11-21 2:56 ` Gao feng
2012-11-21 2:56 ` Gao feng
2012-11-16 16:35 ` [PATCH 11/11] pidns: Support unsharing the pid namespace Eric W. Biederman
2012-11-16 16:35 ` Eric W. Biederman
[not found] ` <1353083750-3621-11-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-11-21 2:55 ` Gao feng
2012-11-21 2:55 ` Gao feng
2012-12-19 18:14 ` Oleg Nesterov
2012-12-19 18:14 ` Oleg Nesterov
[not found] ` <20121219181400.GA22991-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-12-21 1:43 ` Eric W. Biederman
2012-12-21 1:43 ` Eric W. Biederman
[not found] ` <871uektc2f.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-12-21 15:49 ` Oleg Nesterov
2012-12-21 15:49 ` Oleg Nesterov
[not found] ` <20121221154931.GA18730-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-12-21 17:51 ` Eric W. Biederman
2012-12-21 17:51 ` Eric W. Biederman
[not found] ` <87fw2zmgzc.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2012-12-21 19:24 ` Rob Landley
2012-12-21 19:24 ` Rob Landley
2012-12-21 22:58 ` namespace documentation Eric W. Biederman
2012-12-21 22:58 ` Eric W. Biederman
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