Hi all, I'm reviewing Fedora patch set and notice an issue that I'm not sure how to handle within Sane. Has this been discussed in past?
It looks like all 3 Epson backends can detect SCSI scanners based on scsi type being "processor", vendor ID being "EPSON", and the model/product name having 1 of 5 prefixes. This is good to know for next step. On Fedora, it seems its a common problem that hal or udev gets the permissions for scsi Epson scanners wrong and users can only scan as root. They generically fix permissions for scsi "scanner" class but not "processor". Their work around is to edit entry for specific scanner in the epson2.desc file and a line as follows each time a user reports a problem: :scsi "ESPON" "Exact Model Name Reported" "processor" Once thats done, sane's tools will generate a libsane.fdi/libsane.rules that will set permissions correct. Sane is not providing enough details right now it seems. First option to help end users is to start providing that much details. Mostly, the epson2.desc values are driven by epkowa developers from their epkowa.desc. Would it be possible for epkowa developers to provide a ":scsi" line for all SCSI devices? Second option is to provide some kind of wild card support. For example: :scsi "EPSON" "Perfection*" "processor" This would be pretty difficult to convert into hal and udev yntax though. Its also will cause some confusion when a Perfection 636S rule matches a Perfection 636. A third option is to provide some sort of hard coded/hand written wild card rules that is added to libsane.fdi and libsane.rules for these special cases. This is probably the easiest. It looks like at east Epson and HP could benefit from this. Do people think this is worth addressing? Chris
