linux-kernel - Re: [PATCH v2 0/2] Add further ioctl() operations for namespace discovery

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Message-ID: <38ec76ed-8f4c-b0be-b144-d17ffd1ae0c1@gmail.com>
Date:   Wed, 25 Jan 2017 13:39:01 +1300
From:   "Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>
To:     "Eric W. Biederman" <ebiederm@...ssion.com>
Cc:     mtk.manpages@...il.com, "Serge E. Hallyn" <serge@...lyn.com>,
        Linux API <linux-api@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
        Andrey Vagin <avagin@...nvz.org>,
        James Bottomley <James.Bottomley@...senpartnership.com>,
        "W. Trevor King" <wking@...mily.us>,
        Alexander Viro <viro@...iv.linux.org.uk>
Subject: Re: [PATCH v2 0/2] Add further ioctl() operations for namespace
 discovery

Hello Eric,

On 01/25/2017 11:41 AM, Eric W. Biederman wrote:
> "Michael Kerrisk (man-pages)" <mtk.manpages@...il.com> writes:
> 
>> Hi Eric,
>>
>> Do you have any input for this small patch set? I've still to tweak a
>> comment as suggested by Trevor King, but otherwise I'd like to know if
>> this is good to go for the next merge window.
> 
> Apologies I have been bogged down with other things.  Basically the
> code looks fine, and now that I have caught up with things I will be
> happy to merge your for the next merge window.

Thanks.

> I do wonder if returning -EOVERFLOW may be more useful than running
> the overflow_uid when mapping fails.

Yes, it I think you're right. I'll fix that.

> Also, now that I think about it.  Please let's use (uid_t __user *) for
> the type of argp.  I think that will be more maintainable in the long
> run.  Easier to grep for etc.

Yes, I'll make that change.

> Neither of these things are big or would prevent me from merging your
> change just things that I think would be nice to have.

Both seem worth having to me.

Cheers,

Michael


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