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Re: File sharing over virtio-9p

On Fri, Oct 25, 2019 at 11:19 PM Mouse <> wrote:
> > [W]hich of the following is more readable to the user:
> > $ ls foo
> > ls: foo: No such file or directory
> > or
> > $ ls foo
> > ls: stat(foo): No such file or directory
> It depends entirely on the user.
> As I recently wrote on a non-NetBSD mailing list, there is no such
> thing as a good or bad user interface; there is only a good or bad user
> interfaces for a particular user (or class of sufficiently-similar
> users).
> I've lost track of the number of times I've had to resort to a
> sledgehammer such as ktrace to find out what's really going wrong
> because an error message doesn't report enough information.

I've had similar experiences on KASSERT; if a KASSERT fails because of
memory corruption, I wish to know not only if it fails or not but also
values used in KASSERT.

Anyway thank you for suggestions.  I committed the patches with
changing the error message for open while keeping one for setsockopt.

It may be good to have guidelines on writing error messages somewhere.


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