From owner-freebsd-current  Wed Nov 24  8:19:26 1999
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From: Michael Kennett <mike@laurasia.com.au>
Message-Id: <199911241618.AAA28147@laurasia.com.au>
Subject: Re: FreeBSD security auditing project.
In-Reply-To: <199911241519.KAA29757@khavrinen.lcs.mit.edu> from Garrett Wollman at "Nov 24, 99 10:19:49 am"
To: wollman@khavrinen.lcs.mit.edu (Garrett Wollman)
Date: Thu, 25 Nov 1999 00:18:42 +0800 (WST)
Cc: current@freebsd.org
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Garrett Wollman wrote:
> 
> Perhaps if name[] had been declared thus:
> 
> #define	INTTYPE_NCHARS(t) ((sizeof(t) * 3 * CHAR_BIT + 7) / 8)
> 
> 	char name[(sizeof "ipfw: ") + INTTYPE_NCHARS(int)];

Or alternatively (removing a bit more magic):

#include <sys/types.h>

#define INTTYPE_NCHARS(t)   (howmany (sizeof(t) * 3 * CHAR_BIT, 8))

The macro howmany() is quite useful. It is also in <sys/param.h>

Mike Kennett
(mike@laurasia.com.au)



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