On Monday 10 September 2007 00:52:08 Martin Tournoij wrote:

> Thought you could only fetch the sysctl values defined in sys/sysctl.h
> with sysctl()/sysctlbyname(), apparently not...

No, I believe those are guaranteed to be available (more to the point: made 
available through /boot/kernel/kernel). Kernel modules (and as such drivers) 
can also expose their settings via sysctl and since they can be loaded 
dynamically and don't have to be part of the base src tree, sys/sysctl.h 
doesn't know about them. For example:
sysctl vfs.fuse.fuse4bsd_version
vfs.fuse.fuse4bsd_version: 0.3.9-pre1

which is /usr/ports/sysutils/fusefs-kmod.

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