Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Cc:     mtk.manpages@gmail.com,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        lkml <linux-kernel@vger.kernel.org>,
        Linux API <linux-api@vger.kernel.org>,
        Containers <containers@lists.linux-foundation.org>,
        Adrian Reber <adrian@lisas.de>
To:     Andrey Vagin <avagin@openvz.org>, Dmitry Safonov <dima@arista.com>
From:   "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com>
Subject: /proc/sys/user/max_time_namespaces?
Message-ID: <0fbcb669-33a8-9730-f7fa-639707532611@gmail.com>
Date:   Fri, 3 Apr 2020 14:21:27 +0200
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
 Thunderbird/68.6.0
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Dmitry, Andrei

[Andrei, I mistyped your openvz address in an email of a few minutes
ago ("[PATCH] ns: Fix time_for_children symlink"). You were CCed
on your gmail address though.]

In the namespaces(7) manual page there is documentation for 
these files:

$ ls -1 /proc/sys/user/*namespaces
/proc/sys/user/max_cgroup_namespaces
/proc/sys/user/max_ipc_namespaces
/proc/sys/user/max_mnt_namespaces
/proc/sys/user/max_net_namespaces
/proc/sys/user/max_pid_namespaces
/proc/sys/user/max_user_namespaces
/proc/sys/user/max_uts_namespaces

These files allow one to limit on the number of namespaces
of each type.

However, there is no /proc/sys/user/max_time_namespaces file.
Was this deliberate, or an oversight?

Thanks,

Michael

-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/