Re: [v4l-dvb-maintainer] [PATCH] DVB: Delete unused header file linux/dvb/version.h.

[Manu Abraham]

On 3/25/07, Arjan van de Ven <arjan@xxxxxxxxxxxxx> wrote:
> > There are cases where we need an API update since newer systems do show up.
> > In such a case, the only way is to provide backward compatibility
> > while adding in newer stuff.
> >
> > Currently we use the version major/minor for the userspace to identify
> > the in kernel API, while the userspace apps can remain binary
> > compatible
>
> this is the problem exactly! Your userspace binary knows about the
> kernel headers it was compiled against, not about the actual running
> kernel! They are very likely not the same.

Well, we could go for an IOCTL in such a case to avoid the unpleasant scenario.


Manu
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