q-dev: add data to qubesdb needed by new API

include interface number in parent info
add usb interfaces to qubesdb
add parent of block device
add explanation comments
add usb vendor_enc
vendor_enc contains name of vendor submitted directly by the device

udev/udev-block-add-change

@@ -164,11 +164,18 @@ if [ -n "$DM_NAME" ]; then
     DESC="$DM_NAME"
 fi
 
+if [ -f /sys$DEVPATH/partition ]; then
+    parent=$(basename "$(dirname "$DEVPATH")")
+elif echo "$DEVPATH" | grep -q '/host'; then
+    parent=$(basename "$(sed 's|/host.*$||' <<< "$DEVPATH")")
+fi
+
 # The last one is meant to trigger watches
 qubesdb-write \
     "$QDB_KEY/desc" "$DESC" \
     "$QDB_KEY/size" "$SIZE" \
     "$QDB_KEY/mode" "$MODE" \
+    "$QDB_KEY/parent" "$parent" \
     /qubes-block-devices ''
 
 # Make sure that block backend is loaded

udev/udev-block-remove

@@ -5,6 +5,7 @@ QDB_KEY="/qubes-block-devices/$NAME"
 # Trailing slash is intentional - it will remove the whole directory, instead of
 # a single base entry
 qubesdb-rm "$QDB_KEY/"
+# This is meant to trigger watches
 qubesdb-write /qubes-block-devices ''
 
 if [ -r /run/qubes/block-slave-cache-$NAME ]; then

udev/udev-usb-add-change

@@ -15,11 +15,8 @@
 # qubesdb doesn't allow dot in key name
 XSNAME=`basename ${DEVPATH} | tr . _`
 
-# FIXME: For some devices (my Cherry keyboard) ID_SERIAL does not
-# contain proper human-readable name, should find better method to
-# build devide description.
-#DESC=`python -c "dev='%d-%d' % (int('${BUSNUM}'.lstrip('0')), (int('${DEVNUM}'.lstrip('0'))-1)); from xen.util import vusb_util; print vusb_util.get_usbdevice_info(dev);"`
-DESC="${ID_VENDOR_ID}:${ID_MODEL_ID} ${ID_SERIAL}"
+# in general ID_SERIAL = "${ID_VENDOR}_${ID_MODEL}_${ID_SERIAL_SHORT}"
+DESC="${ID_VENDOR_ID}:${ID_MODEL_ID} ${ID_VENDOR_ENC} ${ID_MODEL_ENC} ${ID_SERIAL_SHORT}"
 
 VERSION=`cat /sys/$DEVPATH/version | tr -d ' '|cut -f 1 -d .`
 
@@ -31,9 +28,12 @@ fi
 
 QDB_KEY="/qubes-usb-devices/$XSNAME"
 
-qubesdb-write "$QDB_KEY/desc" "$DESC"
-qubesdb-write "$QDB_KEY/usb-ver" "$VERSION"
-qubesdb-write /qubes-usb-devices ''
+# The last one is meant to trigger watches
+qubesdb-write \
+    "$QDB_KEY/desc" "$DESC" \
+    "$QDB_KEY/usb-ver" "$VERSION" \
+    "$QDB_KEY/interfaces" "$ID_USB_INTERFACES" \
+    /qubes-usb-devices ''
 
 # Make sure PVUSB backend driver is loaded.
 /sbin/modprobe xen-usbback 2> /dev/null || true

udev/udev-usb-remove

@@ -7,4 +7,5 @@ NAME=`basename ${DEVPATH} | tr . _`
 QDB_KEY="/qubes-usb-devices/$NAME/"
 
 qubesdb-rm "$QDB_KEY"
+# This is meant to trigger watches
 qubesdb-write /qubes-usb-devices ''