On Sat, 25 Apr 2009, David Brownell wrote: > On Saturday 25 April 2009, Greg KH wrote: > > Here's the equivalent of a "stock" lsusb output in 70 lines of C code, > > The useful bits are "lsusb -v". As far as I'm concerned > there's virtually no point to the no-params version. ;) It would be nice to have an option for intermediate verbosity, with output resembling /proc/bus/usb/devices (or Randy's shell script). :-) > That is, parsing and decrypting all descriptors, especially > the class ones. Quite right. Note that the "descriptors" binary sysfs attribute contains only the device, config, interface, and endpoint descriptors. It doesn't contain any special class-specific descriptors, such as the report descriptors in an HID device. You'll have to get them from the device. One nice benefit of using sysfs and the "descriptors" attribute instead of libusb is that scanning the bus won't cause all the autosuspended hubs and devices to be woken up. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
