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Date: Sun, 15 Jul 2007 23:15:49 +0200
From: Ed Schouten <ed@fxq.nl>
To: Julian Elischer <julian@elischer.org>
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Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org>
Subject: Re: add closefrom() call
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* Julian Elischer <julian@elischer.org> wrote:
> Ed Schouten wrote:
>> Wouldn't it be better to just implement it through fcntl() and implement
>> closefrom() in libc?
>
> that's a possibility but I personally thing the huge difference in=20
> efficiency
> makes it worth putting it in the kernel.
> Quite a few programs I know of could really help their startup time with=
=20
> this as the first thing they do is "close the first 2000 file descriptors.

Woops! Sorry for responding this late, but it looks like I didn't
explain myself good enough. Sorry. :) To rephrase myself:

Wouldn't it be better to just implement fcntl(..., F_CLOSEM, ...) in the
kernel and make closefrom() a simple libc routine:

void
closefrom(int lowfd)
{
	fcntl(lowfd, F_CLOSEM, NULL);
}

Similar to creat(2).

--=20
 Ed Schouten <ed@fxq.nl>
 WWW: http://g-rave.nl/

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