From owner-freebsd-hackers  Wed Jul 21  1:17:49 1999
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Date: Wed, 21 Jul 1999 10:12:17 +0000
From: Niall Smart <niall@pobox.com>
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To: Peter Jeremy <jeremyp@gsmx07.alcatel.com.au>
Cc: hackers@FreeBSD.ORG
Subject: Re: Proposal for new syscall to close files
References: <99Jul21.100128est.40397@border.alcanet.com.au>
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> 3) Close all FDs except the ones you explicitly want to keep.  This
>    is normally something like:
>         for (i = getdtablesize(); --i > 2; )
>                 close(i);
>    The advantage is that you are sure you don't miss any.  The
>    disadvantage is that it requires a system call for each potentially
>    open FD - >600 on my system - whereas maybe only 4 or 5 are
>    actually open.

How many daemons suffer from performance problems because of
this?  None that I know of.  I'm sorry, but this syscall seems
like clutter to me.

Regards,

Niall


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