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Date: Mon, 16 Jul 2007 11:25:37 -0700
From: Julian Elischer <julian@elischer.org>
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To: Peter Jeremy <peterjeremy@optushome.com.au>
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Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org>
Subject: Re: add closefrom() call
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Peter Jeremy wrote:
> On 2007-Jul-15 16:51:38 -0700, Julian Elischer <julian@elischer.org> wrote:
>>> void
>>> closefrom(int lowfd)
>>> {
>>> 	fcntl(lowfd, F_CLOSEM, NULL);
>>> }
>> what on earth would that achieve?
>> (as opposed to just a simple syscall)
> 
> The only benefit I can think of is minimising the number of syscalls.
> Is there any other benefit?
> 

I don't think so.. it's less efficient, and harder to do..
syscalls are not in short supply.