Added blktap support. Includes kernel driver (enabled as CONFIG_XEN_BLKDEV_TAP=y) and userspace tools. The userspace deamon (blktapctrl) is enabled by default when xend is activated. For further information on using and configuring blktap see tools/blktap/README.

tools/examples/Makefile

@@ -26,6 +26,7 @@ XEN_SCRIPTS += network-route vif-route
 XEN_SCRIPTS += network-nat vif-nat
 XEN_SCRIPTS += block
 XEN_SCRIPTS += block-enbd block-nbd
+XEN_SCRIPTS += blktap
 XEN_SCRIPTS += vtpm vtpm-delete
 XEN_SCRIPTS += xen-hotplug-cleanup
 XEN_SCRIPTS += external-device-migrate

tools/examples/blktap

@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# Copyright (c) 2005, XenSource Ltd.
+
+dir=$(dirname "$0")
+. "$dir/xen-hotplug-common.sh"
+
+findCommand "$@"
+
+if [ "$command" == 'add' ]
+then
+  success
+fi
+
+exit 0

tools/examples/xen-backend.agent

@@ -7,6 +7,9 @@ PATH=/etc/xen/scripts:$PATH
 claim_lock xenbus_hotplug_global
 
 case "$XENBUS_TYPE" in
+  tap)
+    /etc/xen/scripts/blktap "$ACTION"
+    ;;
   vbd)
     /etc/xen/scripts/block "$ACTION"
     ;;

tools/examples/xen-backend.rules

@@ -1,3 +1,4 @@
+SUBSYSTEM=="xen-backend", KERNEL=="tap*", RUN+="/etc/xen/scripts/blktap $env{ACTION}"
 SUBSYSTEM=="xen-backend", KERNEL=="vbd*", RUN+="/etc/xen/scripts/block $env{ACTION}"
 SUBSYSTEM=="xen-backend", KERNEL=="vtpm*", RUN+="/etc/xen/scripts/vtpm $env{ACTION}"
 SUBSYSTEM=="xen-backend", KERNEL=="vif*", ACTION=="online", RUN+="$env{script} online"