[sane-devel] Bus type assumption causes segfault (was: All sane frontends segfault with my HP 5200C)

[Ben Finney]

On Sun, 3 Feb 2002 11:29:30 +0100, Henning Meier-Geinitz <henning@meier-geinitz.de> wrote:
> It's not a bug because it's documented :-)

That's a fair enough response for development code, but I hope we
agree that *any* segfault under conditions that can be detected with
software (i.e. anything other than intermittent hardware faults), is a
bug.

> I have no idea how to test if the device is a SCSI device without
> sending data to it. Maybe we can add some magic to look at the real
> device name if /dev/scanner is used but ad this can something like
> /dev/sga, /dev/sg1, /dev/uk0, /dev/ss0 and many many more it's not
> that easy. And nobody prevents the user to create
> /dev/myownscsiscanner with the correct major/minor numbers.

I think perhaps you just answered your own question -- the major/minor
device numbers already indicate what the device type is.  Can we query
the kernel for information on the device numbers to see what the bus
type is?

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