svn commit: r365268 - in head: sbin/sysctl sys/kern

[Mark Johnston]

On Wed, Sep 02, 2020 at 11:43:56AM -0700, John Baldwin wrote:
> On 9/2/20 11:17 AM, Mark Johnston wrote:
> > Author: markj
> > Date: Wed Sep  2 18:17:08 2020
> > New Revision: 365268
> > URL: https://svnweb.freebsd.org/changeset/base/365268
> > 
> > Log:
> >   Add sysctl(8) formatting for hw.pagesizes.
> >   
> >   - Change the type of hw.pagesizes to OPAQUE, since it returns an array.
> >   - Modify the handler to only truncate the returned length if the caller
> >     supplied an output buffer.  This allows use of the trick of passing a
> >     NULL output buffer to fetch the output size, while preserving
> >     compatibility if MAXPAGESIZES is increased.
> >   - Add a "S,pagesize" formatter to sysctl(8).
> 
> Doesn't sysctl(8) handle scalar types that are arrays?  That is, couldn't
> this change just be the change to not truncate 'len' without needing to make
> it opaque and needing a custom printer, etc.?

I think you are right.  I didn't know sysctl(8) could do that.