sysctl_proc calls handler twice

[Pawel Jakub Dawidek]

On Thu, Aug 11, 2005 at 06:12:14PM +0200, m.ehinger at ltur.de wrote:
+> Hi,
+> 
+> can someone explain why a proc sysctl (add via SYSCTL_PROC or SYSCTL_ADD_PROC) calls the handler twice if i read the sysctl only
+> once? Is this the normal behaviour?

Yes, AFAIR first call is done to find out how much memory should be
allocated and second one is request for a real data.

+> How can i prevent this?

You can't, try to live with it.

-- 
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd at FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!
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