Major A wrote: > > Hi, > > I need some help from SANE developers: > > Given a device file, how can I determine whether that is a generic > SCSI or a USB scanner device? It seems that when I try to open a USB > device file as a SCSI device and probe with INQUIRY, a USB timeout > will occur. I don't think using a generic SCSI device file with some > random USB scanner protocol is a good idea either. > > So, is it possible to decide what interface the file stands for, or do > I have to judge from the filename (example: "usb:/dev/scanner")?
What about trying some device driver specific ioctl? For the SG driver, you could use for example SG_GET_VERSION_NUM . Abel
