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From: Alexey Dobriyan <adobriyan@gmail.com>
Date: Wed, 25 Oct 2017 14:45:31 +0200
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Subject: Re: [PATCH 1/2 v2] fdmap(2)
To: Pavel Machek <pavel@ucw.cz>
Cc: "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com>,
        akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
        linux-api@vger.kernel.org, rdunlap@infradead.org, tglx@linutronix.de,
        tixxdz@gmail.com, gladkov.alexey@gmail.com,
        Aliaksandr Patseyenak <Aliaksandr_Patseyenak1@epam.com>
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On 10/23/17, Pavel Machek <pavel@ucw.cz> wrote:

> Binary fdmap looks... quite ugly to me. But close_all(from, to)
> syscall kindof makes sense to me... and is not that ugly.
>
> Given that openbsd has something similar... perhaps we can take that?

closefrom() can be implemented on top of fdmap().
fdmap as is is useful for other purposes.

> Except during startup, application should have good idea what fds it
> has open, so maybe that's enough?