[sane-devel] gphoto2 backend

[Henning Meier-Geinitz]

Hi,

On Wed, Oct 16, 2002 at 02:19:02PM -0400, Bob Lockie wrote:
> 
> # scanimage -L
> 
> shouldn't the gphoto2 backend call an exit function?
> 
> [dll] load: searching backend `gphoto2' in `/usr/local/lib/sane'
> [dll] load: trying to load `/usr/local/lib/sane/libsane-gphoto2.so.1'
> [dll] load: dlopen()ing `/usr/local/lib/sane/libsane-gphoto2.so.1'
> [dll] init: initializing backend `gphoto2'
> [gphoto2] ERROR: Bad parameters

sane_init of gpohoto2 return a status other than SANE_STATUS_GOOD I
suppose. So the backend wasn't initialized correctly. It's not allowed
to call any other SANE function in this case. To be exact: if you do,
the behaviour is undefined.

I have no idea, why gphoto2's sane_init fails, however.

> [dll] sane_exit: exiting
> [dll] sane_exit: calling backend `snapscan's exit function
> [dll] sane_exit: calling backend `microtek2's exit function
> [dll] sane_exit: calling backend `microtek's exit function
> [dll] sane_exit: finished

So the dll backend doesn't call sane_exit of gphoto2. I think that's
correct.

Bye,
  Henning