1 files changed, 36 insertions, 0 deletions
diff --git a/os-plugins/plugins/xen/files/xen.examples/scripts/xen-hotplug-cleanup b/os-plugins/plugins/xen/files/xen.examples/scripts/xen-hotplug-cleanup
new file mode 100755
index 00000000..706359d0
--- /dev/null
+++ b/os-plugins/plugins/xen/files/xen.examples/scripts/xen-hotplug-cleanup
@@ -0,0 +1,36 @@
+#! /bin/bash
+
+dir=$(dirname "$0")
+. "$dir/xen-hotplug-common.sh"
+
+# Claim the lock protecting /etc/xen/scripts/block.  This stops a race whereby
+# paths in the store would disappear underneath that script as it attempted to
+# read from the store checking for device sharing.
+# Any other scripts that do similar things will have to have their lock
+# claimed too.
+# This is pretty horrible, but there's not really a nicer way of solving this.
+claim_lock "block"
+
+# split backend/DEVCLASS/VMID/DEVID on slashes
+path_array=( ${XENBUS_PATH//\// } )
+# get /vm/UUID path
+vm=$(xenstore_read_default "/local/domain/${path_array[2]}/vm" "")
+# construct /vm/UUID/device/DEVCLASS/DEVID
+if [ "$vm" != "" ]; then
+  vm_dev="$vm/device/${path_array[1]}/${path_array[3]}"
+else
+  vm_dev=
+fi
+
+# remove device frontend store entries
+xenstore-rm -t \
+  $(xenstore-read "$XENBUS_PATH/frontend" 2>/dev/null) 2>/dev/null || true
+
+# remove device backend store entries
+xenstore-rm -t "$XENBUS_PATH"        2>/dev/null || true
+xenstore-rm -t "error/$XENBUS_PATH"  2>/dev/null || true
+
+# remove device path from /vm/UUID
+[ "$vm_dev" != "" ] && xenstore-rm -t "$vm_dev" 2>/dev/null || true
+
+release_lock "block"