On Sat, 18 Dec 1999, Peter Wemm wrote:
> Andrzej Bialecki wrote:
> > On Fri, 17 Dec 1999, Arun Sharma wrote:
> >
> > > I have also figured out how to dynamically register sysctl nodes.
> > > The trick is to basically malloc a sysctl_oid and fill in the right
> > > fields and calling sysctl_register_oid. The code is in a kernel
> > > module available from:
> > >
> > > http://sharmas.dhs.org/~adsharma/projects/freebsd/sysctl.tar.gz
> > >
> > > It really needs to go into the base kernel. Also, I think
> > > sysctl_register_long and its yet to be written friends (register_int)
> > > etc, need to go into kern_sysctl - so that others can reuse the code
> > > to dynamically create sysctl nodes.
> >
> > I was thinking exactly about the same, and I was going to implement them
> > myself... IMO these patches should go to the tree - without them the work
> > that Mike Smith put into sysctl infrastructure is much less useful for
> > average Joe Kernel Hacker...
>
> Err.. That was Doug Rabson (dfr) who fixed the sysctl stuff to finish
> making it dynamic. sysctl_register_xxx() are wrappers around
> sysctl_register_oid(), but I guess it's ok to make some helper functions to
> make the existing functionality to make it easier to use.
Oh... My sincere apologies then for wrong attribution.
Anyway, I think this stuff (although it may seem redundant to you) is very
helpful. It takes some time to figure out how to untangle the SYSCTL_*,
SLIST_*, DATA_SET and linker sets (which are not really indispensable
here) to really learn how the dynamic sysctls work. These functions
provide useful and handy shortcuts. IMHO, of course.
Andrzej Bialecki
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