[systemd-devel] kdbus and 32bit architectures

[Kay Sievers]

On Wed, Feb 19, 2014 at 8:34 PM, Peeters Simon <peeters.simon at gmail.com> wrote:
> This weekend I switched 2 of my devices to kdbus. both running a 32bit
> system (my atom based netbook and a beaglebone black)
>
> while compiling I ran in to trouble on both devices because of missing
> division and modulo operations for uint64, both related to bloom.size
> in match.c.
>
> So my question is: is it really necessary for bloom.size to be a
> uint64? I can not imagine any use case for bloom sizes exceeding
> UINT32_MAX.
> I am not sure what the proper fix would be, I temporary fixed this by
> casting bloom.size to uint32 where needed, and this works.

Try changing it to div_u64()? You find that in other places in the
kdbus code too.

Send a patch please, if it works.

> I also noted that in kdbus.h (while compiling kdbus itself) ioctl.h
> does not get included resulting in missing definitions for _IO() and
> family. (at least on arm)

Where is it defined on arm? There is an include in kdbus.h.

> For the rest kdbus works great! thanks!

Cool!

Thanks,
Kay