Re: CVS commit: src/common/include/prop

[Andrew Doran <ad%NetBSD.org@localhost>]

On Fri, Dec 05, 2008 at 04:20:10PM +0100, Manuel Bouyer wrote:

> > > > > On Fri, Dec 05, 2008 at 01:11:41PM +0000, Andrew Doran wrote:
> > > > > > Log Message:
> > > > > > Avoid conflicts with ZFS.

> it's ugly.

I agree.

> It will also lead to interesting bugs in the future, say, when we'll want
> to use proplib inside zfs

It's unlikely because Sun has a problib analogue which zfs uses (libnvpair).

> (or when something happens to use both proplib and zfs headers).

It could happen with our mount() syscall or some disk stuff but I think we
can isolate those safely.

> I can't see why proplib would be more at fault than zfs for this
> conflict

It's not proplib's fault per-se. The conflict occurs in the ZFS kernel code
and not user space code. It arises because libprob.h is included in many of
our kernel headers, and it clashes with symbols from the ZFS headers.

Excluding 3 or 4 source files, I have all of ZFS compiling and linking and
this is the only conflict that I have not been able to resolve another way.
Everything else is handled with cpp tricks and glue functions. This one I
could not fix with cpp.

> and why zfs can't be changed.

I have avoided changing the ZFS source wherever possible because the more
our copy diverges from Sun's, the more time we will have to invest to
maintain and support it.

We could possibly provide a problib_types.h header that provides enough
types for our header files, but does not automatically expose other symbols.

Andrew