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To: Simon Shapiro <Shimon@i-Connect.Net>
cc: Mike Smith <mike@smith.net.au>, freebsd-hackers@freebsd.org
Subject: Re: /usr/include/sys How To question 
In-reply-to: Your message of "Wed, 10 Sep 1997 20:13:21 MST."
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Date: Thu, 11 Sep 1997 14:05:52 +1000
From: Mike Smith <mike@smith.net.au>
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> 
> >  If you only have a small number of these tunables, make them sysctl 
> >  variables.  Otherwise, define a structure containing them and a new 
> >  ioctl to retrieve it.
> 
> I have the ioctl to retrieve them.  How do I go about making them sysctl
> variables?

Try something like :

#ifndef FOO_TUNABLE
# define FOO_TUNABLE 16
#endif
static int	foo_knob = FOO_TUNABLE;
SYSCTL_INT(_machdep, OID_AUTO, foo_knob, CTLFLAG_RO, &foo_knob, 0, "");

See sys/sysctl.h for more details.

mike