From owner-freebsd-security  Tue Jul 28 01:58:30 1998
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Date: Tue, 28 Jul 1998 10:56:50 +0200 (CEST)
From: Bohdan Horst  <nexus@hoth.amu.edu.pl>
To: Joao Paulo Campello <john@neoplanos.com.br>
cc: security@FreeBSD.ORG
Subject: Re: FreeBSD Security How-to for your review.
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On Tue, 28 Jul 1998, Joao Paulo Campello wrote:

> Hi all,
> 
> I dunno if it's the correct list to ask for this kind of information, but...
> 
> 	I once tried to compile an irc daemon in my old Linux, and when needed to
> establish more than 256 simultaneuos connections I've got the error:
> 
> "FD Table too big"
> 
> I didn't find any kernel option in the RedHat kernel configuration to rise
> the FD Table value... Now i've the same problem in my FreeBSD 2.2.6
> 
> Does anybody know which is the FD Table value in FreeBSD? Or even how to
> change this?!?!

FreeBSD 2.2.*
/usr/src/sys/sys/types.h
---------
/*
 * Select uses bit masks of file descriptors in longs.  These macros
 * manipulate such bit fields (the filesystem macros use chars).
 * FD_SETSIZE may be defined by the user, but the default here should
 * be enough for most uses.
 */ 
#ifndef FD_SETSIZE 
#define FD_SETSIZE 256 
#endif
---------

change this to 1024 (or 2048) and ircd will work fine :) (tested on ircd
with >800 users)


p.s. 
FreeBSD 3.*  ->  #define FD_SETSIZE 1024

-- 
 / irl:Bohdan 'Nexus' Horst | mailto:nexus@irc.pl | irc:Nexus \
{---------------------------^----------v----------^------------}
 \ http://www.physd.amu.edu.pl/~nexus/ | Instytut Fizyki  UAM /


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