On Tue, Oct 03, 2006 at 08:36:46PM -0400, Sean wrote:
> On Tue, 3 Oct 2006 17:30:31 -0700
> Jean Tourrilhes <[email protected]> wrote:
>
> > How does that happen in practice ? Kernel has no clue on what
> > userpace version is running.
> >
>
> Ted mentioned that the way it works for stat is that userspace requests
> an API version and the kernel delivers it. So old versions request old
> API and new versions request new API. You only ever _add_ new API, and
> never remove older versions.
I think the point is that the API currently has no such facility.
Adding a new set of WE ioctls is unpalatable, both for general
ioctl-haters and because the WE ioctl collection is quite broad.
Maybe that could be solved by forcing the new WE stuff to use
the netlink-based WE facilities, but then you are expanding the
compatibility nightmare for whatever replaces WE.
John
--
John W. Linville
[email protected]
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