Date: Mon, 16 Jul 2007 11:25:37 -0700 From: Julian Elischer <julian@elischer.org> To: Peter Jeremy <peterjeremy@optushome.com.au> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: add closefrom() call Message-ID: <469BB821.1010507@elischer.org> In-Reply-To: <20070716113425.GC65937@turion.vk2pj.dyndns.org> References: <de5dfb5a0707041727j3e3518f9l5a019717a9f90aa@mail.gmail.com> <20070705122650.GE1302@britannica.bec.de> <468E16E6.6030608@delphij.net> <20070706112453.GA3217@hoeg.nl> <468E7007.5050607@elischer.org> <20070715211549.GB39075@hoeg.nl> <469AB30A.5000001@elischer.org> <20070716113425.GC65937@turion.vk2pj.dyndns.org>
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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.
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