[PATCH] ppc64 utmp changes

[Steve Munroe]

Jakub Jelinek write:

> Now an important question is whether we want to do something similar
> on x86-64, s390/s390x and sparc/sparc64.
> Because when both 32-bit and 64-bit programs will use utmp/utmpx,
> the files will contain garbage.

Yes that is an important question!

I still don't understand by this (and other BIARCH stuff) is not a concern
for the more mature BIARCH systems (s390, x86_64, sparc, ...). But I can
find no evidence of this in the sysdeps source for those platforms ...

For powerpc64 we assume that most of the system utilities (the utilities
that write /var/run/utmp for example) will remain 32-bit. So for us making
64-bit backward compatible to 32-bit utmp is the best answer. What are s390
and x86_64 assuming?