Re: x86_64: 32bit emulation problems

Bernd Schubert
2005-03-01T23:19:45Z

On Tuesday 01 March 2005 23:10, Andreas Schwab wrote:
> Bernd Schubert <bernd-schubert@web.de> writes:
> >> It is most likely some kind of user space problem. I would change
> >> it to int err = stat(dir, &buf);
> >> and then go through it with gdb and see what value err gets assigned.
> >>
> >> I cannot see any kernel problem.
> >
> > The err value will become -1 here.
>
> That's because there are some values in the stat64 buffer delivered by the
> kernel which cannot be packed into the stat buffer that you pass to stat.
> Use stat64 or _FILE_OFFSET_BITS=64.

Hmm, after compiling with -D_FILE_OFFSET_BITS=64 it works fine. But why does
it work without this option on a 32bit kernel, but not on a 64bit kernel?

32bit kernel, 32bit binary: always works
64bit kernel, 64bit binary: always works

64bit kernel, 32bit binary:
- always works on knfsd mount points
- always works with -D_FILE_OFFSET_BITS=64
- only works on unfs3 mount points with _FILE_OFFSET_BITS=64

Do I really have to write a bug report for every single debian package that
access /etc and /var to make the maintainers recompile it with
-D_FILE_OFFSET_BITS=64?
Btw, whats about Suse, are there all packages compiled with this option? ;)

Cheers,
(a completely confused) Bernd