I'm trying to use libudev to unbind a usb device from usb-storage driver ..This 
does not seem to work. Can I even do what I'm trying to do or am I just doing 
it wrong ?In the shell # echo -n "1-1.1:1.0" > 
/sys/bus/usb/drivers/usb-storage/unbind works but this doesn't ...
    gchar *sTestUFD= "1-1.1:1.0";
    struct udev *udev = udev_new();    struct udev_device *device;    if( 
(device = udev_device_new_from_syspath( udev, 
"/sys/bus/usb/drivers/usb-storage" )) != NULL ) {     if( 
udev_device_set_sysattr_value( device, "unbind", sTestUFD  ) < 0 ) {     
sd_journal_print( LOG_NOTICE, "Cannot unbind %s", sTestUFD  ); }     
udev_device_unref( device );    } else {     sd_journal_perror( "Cannot get 
/sys/bus/usb/drivers/usb-storage"  );    }    udev_unref( udev );
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