Greg KH wrote: > On Sun, Jun 01, 2003 at 10:27:06PM -0700, Philip Pokorny wrote: > >>So '- km' in the sensors.h comments must be Kyosti... >> >>There has got to be some common header files between kernel and user space >>so that data structures and "magic" constants are shared. > > No, two separate header files, both kept in sync. That's the way to do > this today. How are they kept in sync. Force of will? Without some automatic way to keep them in sync you've just exchanged one set of problems for another... >>If user space can't include kernel headers, then the kernel will have to >>include a "user space" header. > > Nope, see the many threads on the linux-kernel mailing list about this > issue. OK. So H Peter Anvin suggested something very like what I'm suggesting here: http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=aho5ql%249ja%241%40cesium.transmeta.com Google doesn't seem to turn up much else on the linux.kernel mailing list other than "IOCTL's are bad" comments (and the variations that boil down to "BINARY interfaces are bad") I would view this as supporting my position that it's annoying (and has been for a long time), but not worse than the alternatives and not so annoying as to require fixing. >>It would seem to me that the alternative of having two copies of the same >>data structures and constants would be worse. > > Nope. So we disagree... :v) -- Philip Pokorny, Director of Engineering Tel: 415-358-2635 Fax: 415-358-2646 Toll Free: 888-PENGUIN PENGUIN COMPUTING, INC. www.penguincomputing.com
