From owner-freebsd-bugs  Wed May  9  9: 4:58 2001
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Date: Thu, 10 May 2001 02:03:19 +1000 (EST)
From: Bruce Evans <bde@zeta.org.au>
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To: Dag-Erling Smorgrav <des@ofug.org>
Cc: dwmalone@FreeBSD.ORG, freebsd-bugs@FreeBSD.ORG
Subject: Re: kern/27215: when cat'ing /compat/linux/proc/stat, we have negative
 numbers
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On 9 May 2001, Dag-Erling Smorgrav wrote:

> Bruce Evans <bde@zeta.org.au> writes:
> > Mainly the "interface" given by the type of cp_time.  systat and vmstat,
> > etc., depend on it being an array of longs.  systat uses a sysctl to
> > read the array, but this doesn't help much because it assumes that the
> > array elements have the same types as in the kernel.
> 
> How about hacking systat to check the size of the returned data, and
> use longs if it's only 20 bytes instead of 40?  That'll allow the new
> systat to run on old kernels, though it won't help an old userland
> running on a new kernel - but heck, this is -CURRENT.

The problem is more with ports.  I guess ports need this and systat is
a good place to prototype it.  It's also another incentive to convert
vmstat to use the sysctl.

Bruce


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