linux-kernel - Re: RFC: time_namespaces(7) manual page

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Date:   Tue, 7 Apr 2020 17:32:15 +0200
From:   "Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Andrei Vagin <avagin@...il.com>
Cc:     mtk.manpages@...il.com, Andrei Vagin <avagin@...nvz.org>,
        Dmitry Safonov <dima@...sta.com>,
        linux-man <linux-man@...r.kernel.org>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Linux API <linux-api@...r.kernel.org>,
        Containers <containers@...ts.linux-foundation.org>,
        Dmitry Safonov <0x7f454c46@...il.com>,
        lkml <linux-kernel@...r.kernel.org>,
        Cyrill Gorcunov <gorcunov@...il.com>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Andy Lutomirski <luto@...nel.org>,
        Adrian Reber <adrian@...as.de>
Subject: Re: RFC: time_namespaces(7) manual page

On 4/7/20 4:19 PM, Thomas Gleixner wrote:
> "Michael Kerrisk (man-pages)" <mtk.manpages@...il.com> writes:
>> I've tried to capture this info, as well some other relevant errors
>> in the following text. Does it look okay?
>>
>>        Writes  to  the  timens_offsets  file  can fail with the following
>>        errors:
>>
>>        EINVAL An offset-nanosecs value is greater than 999,999,999.
>>
>>        EINVAL A clock-id value is not valid.
>>
>>        EPERM  The caller does not have the the CAP_SYS_TIME capability.
>>
>>        ERANGE An offset-secs value is out of range.  In particular;
>>
>>               · offset-secs can't be set to a value which would make  the
>>                 current time on the corresponding clock inside the names‐
>>                 pace a negative value; and
>>
>>               · offset-secs can't be set to a value such that the time on
>>                 the corresponding clock inside the namespace would exceed
>>                 half of the value of the  kernel  constant  KTIME_SEC_MAX
>>                 (this  limits  the  clock  value to a maximum of approxi‐
>>                 mately 146 years).
> 
> Yes.

Thanks!

Cheers,

Michael


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