Re: [ANNOUNCE] FUSD v1.00: Framework for User-Space Devices

From: Jeremy Elson (
Date: Tue Oct 09 2001 - 22:55:48 EST

On Fri, 5 Oct 2001, Pavel Machek wrote:
> Yep. And linmodem driver does signal processing, so it is big and
> ugly. And up till now, it had to be in kernel. With your patches, such
> drivers could be userspace (where they belong!). Of course, it would be
> very good if your interface did not change...

FUSD's user-kernel interface won't change spuriously, but it sometimes
will need to change as features are added. Some such changes are
already in the works.

The fact that FUSD provides a semi-stable binary interface for servicing
device-file callbacks isn't really FUSD's design goal as much as it is an
accidental side effect. Making a stable binary interface for kernel
device drivers is the objective of, say, UDI (I think). The purpose of
FUSD is just to be able to proxy the callbacks to userspace.


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This archive was generated by hypermail 2b29 : Mon Oct 15 2001 - 21:00:29 EST