cvs commit: src UPDATING src/sys/sys param.h src/sys/net if.c if.h

[Peter Wemm]

On Monday 30 August 2004 02:53 pm, Brooks Davis wrote:
> On Mon, Aug 30, 2004 at 05:34:23PM -0400, Andrew Gallatin wrote:
> > Brooks Davis writes:
> >  > I don't think so.  The main offenders will be programs that walk
> >  > the interface list via libkvm and programs that use struct
> >  > if_data. ifconfig does neither.  If you haven't recompiled a
> >  > module, a non-working ifconfig might result if by some miracle
> >  > you didn't get a panic on attach.
> >
> > ppc does not even build modules, so that's out.  An older ifconfig
> > pukes, while a new one works, so some sort of kernel/userland ABI
> > must have changed in the last week.  Has the data exported by
> > sysctl changed recently?
>
> I think I found it, at least partially.  The issue is struct
> if_msghdr which is used by ifconfig.  It contains a struct if_data. 
> It has grown by a struct timeval.  The weird thing is that this
> shouldn't be a problem becuase if_msghdr has a length and my addition
> was to the end so ifconfig should be able to skip over it, but it
> doesn't seem to actually work.

It is broken on amd64 too, FWIW.

-- 
Peter Wemm - peter at wemm.org; peter at FreeBSD.org; peter at yahoo-inc.com
"All of this is for nothing if we don't go to the stars" - JMS/B5