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[libvirt] [PATCH] libxenlight driver



Here's the latest version of a libxenlight driver for libvirt.

I've added a per-domain libxl_ctx in addition to the driver wide
context.  The former is stored in virDomainObject privateData and used
for operations on the domain.  The latter is stored in driver private
data and is used for non-domain related libxl calls, e.g. getVersion,
getNodeInfo, etc.  This approach was suggested by Ian Jackson and
Stefano Stabellini and appears to be working much better than a single,
driver wide libxl_ctx.  I no longer have the restart issues described in
the first patch posting [1].

Your review and comments are much appreciated!

Thanks,
Jim

[1] https://www.redhat.com/archives/libvir-list/2011-February/msg00409.html


>From e573c87e23943e365cf309a881f158dc8754e9fb Mon Sep 17 00:00:00 2001
From: Jim Fehlig <jfehlig novell com>
Date: Thu, 10 Feb 2011 15:42:34 -0700
Subject: [PATCH] Add libxenlight driver

Add a new xen driver based on libxenlight [1], which is the primary
toolstack starting with Xen 4.1.0.  The driver is stateful, runs
privileged only, and is accessed with libxl:/// URI.

[1] http://lists.xensource.com/archives/html/xen-devel/2009-11/msg00436.html
---
 cfg.mk                      |    1 +
 configure.ac                |   48 ++
 daemon/Makefile.am          |    4 +
 daemon/libvirtd.c           |    6 +
 docs/drivers.html.in        |    3 +-
 docs/drvxen.html.in         |    6 +-
 docs/drvxenlight.html.in    |   53 ++
 docs/sitemap.html.in        |    6 +-
 include/libvirt/virterror.h |    1 +
 po/POTFILES.in              |    2 +
 src/Makefile.am             |   32 ++
 src/driver.h                |    3 +-
 src/libvirt.c               |    4 +
 src/libxl/libxl_conf.c      |  783 ++++++++++++++++++++++++++
 src/libxl/libxl_conf.h      |   88 +++
 src/libxl/libxl_driver.c    | 1280 +++++++++++++++++++++++++++++++++++++++++++
 src/libxl/libxl_driver.h    |   27 +
 src/util/virterror.c        |    3 +
 18 files changed, 2346 insertions(+), 4 deletions(-)
 create mode 100644 docs/drvxenlight.html.in
 create mode 100644 src/libxl/libxl_conf.c
 create mode 100644 src/libxl/libxl_conf.h
 create mode 100644 src/libxl/libxl_driver.c
 create mode 100644 src/libxl/libxl_driver.h

diff --git a/cfg.mk b/cfg.mk
index 4bbeb96..6ec11b4 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -400,6 +400,7 @@ msg_gen_function += virXenStoreError
 msg_gen_function += virXendError
 msg_gen_function += vmwareError
 msg_gen_function += xenapiSessionErrorHandler
+msg_gen_function += libxlError
 msg_gen_function += xenUnifiedError
 msg_gen_function += xenXMError
 msg_gen_function += VIR_ERROR
diff --git a/configure.ac b/configure.ac
index 2bb6918..c66eca3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -258,6 +258,8 @@ AC_ARG_WITH([phyp],
   AC_HELP_STRING([--with-phyp], [add PHYP support @<:@default=check@:>@]),[],[with_phyp=check])
 AC_ARG_WITH([xenapi],
   AC_HELP_STRING([--with-xenapi], [add XenAPI support @<:@default=check@:>@]),[],[with_xenapi=check])
+AC_ARG_WITH([libxl],
+  AC_HELP_STRING([--with-libxl], [add libxenlight support @<:@default=check@:>@]),[],[with_libxl=check])
 AC_ARG_WITH([vbox],
   AC_HELP_STRING([--with-vbox=@<:@PFX@:>@],
                  [VirtualBox XPCOMC location @<:@default=yes@:>@]),[],
@@ -492,6 +494,46 @@ fi
 AC_SUBST([LIBXENSERVER_CFLAGS])
 AC_SUBST([LIBXENSERVER_LIBS])
 
+old_LIBS="$LIBS"
+old_CFLAGS="$CFLAGS"
+LIBXL_LIBS=""
+LIBXL_CFLAGS=""
+dnl search for libxl, aka libxenlight
+fail=0
+if test "$with_libxl" != "no" ; then
+    if test "$with_libxl" != "yes" && test "$with_libxl" != "check" ; then
+        LIBXL_CFLAGS="-I$with_libxl/include"
+        LIBXL_LIBS="-L$with_libxl"
+    fi
+    CFLAGS="$CFLAGS $LIBXL_CFLAGS"
+    LIBS="$LIBS $LIBXL_LIBS"
+    AC_CHECK_LIB([xenlight], [libxl_ctx_init], [
+        with_libxl=yes
+        LIBXL_LIBS="$LIBXL_LIBS -lxenlight -lxenstore -lxenctrl -lxenguest -luuid -lutil -lblktapctl"
+    ],[
+        if test "$with_libxl" = "yes"; then
+            fail=1
+        fi
+            with_libxl=no
+    ],[
+         -lxenstore -lxenctrl -lxenguest -luuid -lutil -lblktapctl
+    ])
+fi
+
+LIBS="$old_LIBS"
+CFLAGS="$old_CFLAGS"
+
+if test $fail = 1; then
+    AC_MSG_ERROR([You must install the libxl Library to compile libxenlight driver with -lxl])
+fi
+
+if test "$with_libxl" = "yes"; then
+    AC_DEFINE_UNQUOTED([WITH_LIBXL], 1, [whether libxenlight driver is enabled])
+fi
+AM_CONDITIONAL([WITH_LIBXL], [test "$with_libxl" = "yes"])
+
+AC_SUBST([LIBXL_CFLAGS])
+AC_SUBST([LIBXL_LIBS])
 
 old_LIBS="$LIBS"
 old_CFLAGS="$CFLAGS"
@@ -2364,6 +2406,7 @@ AC_MSG_NOTICE([  OpenVZ: $with_openvz])
 AC_MSG_NOTICE([  VMware: $with_vmware])
 AC_MSG_NOTICE([    VBox: $with_vbox])
 AC_MSG_NOTICE([  XenAPI: $with_xenapi])
+AC_MSG_NOTICE([libxenlight: $with_libxl])
 AC_MSG_NOTICE([     LXC: $with_lxc])
 AC_MSG_NOTICE([    PHYP: $with_phyp])
 AC_MSG_NOTICE([     ONE: $with_one])
@@ -2473,6 +2516,11 @@ AC_MSG_NOTICE([  xenapi: $LIBXENSERVER_CFLAGS $LIBXENSERVER_LIBS])
 else
 AC_MSG_NOTICE([  xenapi: no])
 fi
+if test "$with_libxl" = "yes" ; then
+AC_MSG_NOTICE([  libxenlight: $LIBXL_CFLAGS $LIBXL_LIBS])
+else
+AC_MSG_NOTICE([  libxenlight: no])
+fi
 if test "$with_hal" = "yes" ; then
 AC_MSG_NOTICE([     hal: $HAL_CFLAGS $HAL_LIBS])
 else
diff --git a/daemon/Makefile.am b/daemon/Makefile.am
index cdf0f75..c732827 100644
--- a/daemon/Makefile.am
+++ b/daemon/Makefile.am
@@ -111,6 +111,10 @@ if WITH_LXC
     libvirtd_LDADD += ../src/libvirt_driver_lxc.la
 endif
 
+if WITH_LIBXL
+    libvirtd_LDADD += ../src/libvirt_driver_libxl.la
+endif
+
 if WITH_UML
     libvirtd_LDADD += ../src/libvirt_driver_uml.la
 endif
diff --git a/daemon/libvirtd.c b/daemon/libvirtd.c
index f4b3327..962f1fa 100644
--- a/daemon/libvirtd.c
+++ b/daemon/libvirtd.c
@@ -80,6 +80,9 @@
 # ifdef WITH_LXC
 #  include "lxc/lxc_driver.h"
 # endif
+# ifdef WITH_LIBXL
+#  include "libxl/libxl_driver.h"
+# endif
 # ifdef WITH_UML
 #  include "uml/uml_driver.h"
 # endif
@@ -928,6 +931,9 @@ static struct qemud_server *qemudInitialize(void) {
 # ifdef WITH_LXC
     lxcRegister();
 # endif
+# ifdef WITH_LIBXL
+    libxlRegister();
+# endif
 # ifdef WITH_UML
     umlRegister();
 # endif
diff --git a/docs/drivers.html.in b/docs/drivers.html.in
index ecad03a..368664e 100644
--- a/docs/drivers.html.in
+++ b/docs/drivers.html.in
@@ -28,7 +28,8 @@
       <li><strong><a href="drvvbox.html">VirtualBox</a></strong></li>
       <li><strong><a href="drvesx.html">VMware ESX</a></strong></li>
       <li><strong><a href="drvvmware.html">VMware Workstation/Player</a></strong></li>
-      <li><strong><a href="drvxen.html">Xen</a></strong></li>
+      <li><strong><a href="drvxen.html">Xen 3.0.1 - 4.0.x</a></strong></li>
+      <li><strong><a href="drvxenlight.html">Xen 4.1.0 onwards</a></strong></li>
     </ul>
 
     <h2><a name="stroage">Storage drivers</a></h2>
diff --git a/docs/drvxen.html.in b/docs/drvxen.html.in
index 4e35afa..4b88a7d 100644
--- a/docs/drvxen.html.in
+++ b/docs/drvxen.html.in
@@ -6,7 +6,11 @@
 
     <p>
       The libvirt Xen driver provides the ability to manage virtual machines
-      on any Xen release from 3.0.1 onwards.
+      on any Xen release from 3.0.1 to 4.0.x.  Starting with Xen 4.1.0,
+      the traditional xm/xend toolstack is replaced with a new toolstack
+      based on libxenlight.  Consult the
+      <a href="drvxenlight.html">libxenlight driver</a> if your Xen host is 
+      configured to use the new toolstack.
     </p>
 
     <h2><a name="prereq">Deployment pre-requisites</a></h2>
diff --git a/docs/drvxenlight.html.in b/docs/drvxenlight.html.in
new file mode 100644
index 0000000..fe60786
--- /dev/null
+++ b/docs/drvxenlight.html.in
@@ -0,0 +1,53 @@
+<html>
+  <body>
+    <h1>libxenlight hypervisor driver</h1>
+
+    <ul id="toc"></ul>
+
+    <p>
+      The libvirt libxenlight driver provides the ability to manage virtual
+      machines on any Xen release from 4.1.0 onwards.
+    </p>
+
+    <h2><a name="prereq">Deployment pre-requisites</a></h2>
+
+    <p>
+      This driver uses Xen's libxenlight toolstack, which is the default
+      toolstack configuration starting with Xen 4.1.0.  The traditional
+      xm/xend toolstack is still provided, but it is no longer maintained
+      and may be removed in a future Xen release.
+    </p>
+
+    <p>
+      The libxenlight toolstack uses xenstored and blktap2.  Ensure
+      xenstored is running, or use the xencommons init script provided.
+      Ensure your kernel supports the blktap2 module and it is loaded.
+    </p>
+
+    <h2><a name="uri">Connections to libxenlight driver</a></h2>
+
+    <p>
+    The libvirt libxenlight driver is a stateful, privileged driver,
+    with a driver name of 'libxl'. Some example conection URIs for
+    the libxenlight driver are:
+    </p>
+
+<pre>
+libxl:///                      (local access, direct)
+libxl://example.com/           (remote access, TLS/x509)
+libxl+tcp://example.com/       (remote access, SASl/Kerberos)
+libxl+ssh://root example com/  (remote access, SSH tunnelled)
+</pre>
+
+    <h2><a name="xmlconfig">Example domain XML config</a></h2>
+
+    <p>
+      The libxenlight toolstack attempts to be compatible with the
+      legacy xm/xend toolstack, supporting the traditional python
+      configuration files (xen-xm).  Fortunately, the libvirt XML
+      syntax is unchanged with the libxenlight driver.  Consult 
+      the <a href="drvxen.html#xmlconfig">Xen driver examples</a>.
+    </p>
+
+  </body>
+</html>
diff --git a/docs/sitemap.html.in b/docs/sitemap.html.in
index ac0af71..538f227 100644
--- a/docs/sitemap.html.in
+++ b/docs/sitemap.html.in
@@ -156,7 +156,11 @@
             <ul>
               <li>
                 <a href="drvxen.html">Xen</a>
-                <span>Driver the Xen hypervisor</span>
+                <span>Driver the Xen hypervisor, versions 3.0.1 - 4.0.x</span>
+              </li>
+              <li>
+                <a href="drvxenlight.html">libxenlight</a>
+                <span>Driver the Xen hypervisor, version 4.1.0 onwards</span>
               </li>
               <li>
                 <a href="drvqemu.html">QEMU / KVM</a>
diff --git a/include/libvirt/virterror.h b/include/libvirt/virterror.h
index 5962dbf..9f263d2 100644
--- a/include/libvirt/virterror.h
+++ b/include/libvirt/virterror.h
@@ -79,6 +79,7 @@ typedef enum {
     VIR_FROM_SYSINFO = 37,	/* Error from sysinfo/SMBIOS */
     VIR_FROM_STREAMS = 38,	/* Error from I/O streams */
     VIR_FROM_VMWARE = 39,	/* Error from VMware driver */
+    VIR_FROM_LIBXL = 40,	/* Error from libxenlight driver */
 } virErrorDomain;
 
 
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 2256cb2..8a47ab6 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -34,6 +34,8 @@ src/lxc/lxc_conf.c
 src/lxc/lxc_controller.c
 src/lxc/lxc_driver.c
 src/lxc/veth.c
+src/libxl/libxl_driver.c
+src/libxl/libxl_conf.c
 src/network/bridge_driver.c
 src/node_device/node_device_driver.c
 src/node_device/node_device_hal.c
diff --git a/src/Makefile.am b/src/Makefile.am
index 02d5250..f5fc35c 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -297,6 +297,10 @@ XENAPI_DRIVER_SOURCES =								\
 		xenapi/xenapi_driver_private.h					\
 		xenapi/xenapi_utils.c xenapi/xenapi_utils.h
 
+LIBXL_DRIVER_SOURCES =						\
+		libxl/libxl_conf.c libxl/libxl_conf.h		\
+		libxl/libxl_driver.c libxl/libxl_driver.h
+
 UML_DRIVER_SOURCES =						\
 		uml/uml_conf.c uml/uml_conf.h			\
 		uml/uml_driver.c uml/uml_driver.h
@@ -677,6 +681,25 @@ endif
 libvirt_driver_xenapi_la_SOURCES = $(XENAPI_DRIVER_SOURCES)
 endif
 
+if WITH_LIBXL
+if WITH_DRIVER_MODULES
+mod_LTLIBRARIES += libvirt_driver_libxl.la
+else
+noinst_LTLIBRARIES += libvirt_driver_libxl.la
+# Stateful, so linked to daemon instead
+#libvirt_la_BUILT_LIBADD += libvirt_driver_libxl.la
+endif
+libvirt_driver_libxl_la_CFLAGS = $(LIBXL_CFLAGS) \
+		-I top_srcdir@/src/conf $(AM_CFLAGS)
+libvirt_driver_libxl_la_LDFLAGS = $(AM_LDFLAGS)
+libvirt_driver_libxl_la_LIBADD = $(LIBXL_LIBS)
+if WITH_DRIVER_MODULES
+libvirt_driver_libxl_la_LIBADD += ../gnulib/lib/libgnu.la
+libvirt_driver_libxl_la_LDFLAGS += -module -avoid-version
+endif
+libvirt_driver_libxl_la_SOURCES = $(LIBXL_DRIVER_SOURCES)
+endif
+
 if WITH_QEMU
 if WITH_DRIVER_MODULES
 mod_LTLIBRARIES += libvirt_driver_qemu.la
@@ -976,6 +999,7 @@ EXTRA_DIST +=							\
 		$(PHYP_DRIVER_SOURCES)				\
 		$(VBOX_DRIVER_SOURCES)				\
 		$(XENAPI_DRIVER_SOURCES)			\
+		$(LIBXL_DRIVER_SOURCES)			\
 		$(ESX_DRIVER_SOURCES)				\
 		$(ESX_DRIVER_EXTRA_DIST)			\
 		$(NETWORK_DRIVER_SOURCES)			\
@@ -1228,6 +1252,10 @@ if WITH_LXC
 	$(MKDIR_P) "$(DESTDIR)$(localstatedir)/lib/libvirt/lxc"
 	$(MKDIR_P) "$(DESTDIR)$(localstatedir)/run/libvirt/lxc"
 endif
+if WITH_LIBXL
+	$(MKDIR_P) "$(DESTDIR)$(localstatedir)/lib/libvirt/libxl"
+	$(MKDIR_P) "$(DESTDIR)$(localstatedir)/run/libvirt/libxl"
+endif
 if WITH_UML
 	$(MKDIR_P) "$(DESTDIR)$(localstatedir)/lib/libvirt/uml"
 	$(MKDIR_P) "$(DESTDIR)$(localstatedir)/run/libvirt/uml"
@@ -1265,6 +1293,10 @@ if WITH_LXC
 	rmdir "$(DESTDIR)$(localstatedir)/lib/libvirt/lxc" ||:
 	rmdir "$(DESTDIR)$(localstatedir)/run/libvirt/lxc" ||:
 endif
+if WITH_LIBXL
+	rmdir "$(DESTDIR)$(localstatedir)/lib/libvirt/libxl" ||:
+	rmdir "$(DESTDIR)$(localstatedir)/run/libvirt/libxl" ||:
+endif
 if WITH_UML
 	rmdir "$(DESTDIR)$(localstatedir)/lib/libvirt/uml" ||:
 	rmdir "$(DESTDIR)$(localstatedir)/run/libvirt/uml" ||:
diff --git a/src/driver.h b/src/driver.h
index 7451004..b2d9814 100644
--- a/src/driver.h
+++ b/src/driver.h
@@ -28,7 +28,8 @@ typedef enum {
     VIR_DRV_ESX = 10,
     VIR_DRV_PHYP = 11,
     VIR_DRV_XENAPI = 12,
-    VIR_DRV_VMWARE = 13
+    VIR_DRV_VMWARE = 13,
+    VIR_DRV_LIBXL = 14,
 } virDrvNo;
 
 
diff --git a/src/libvirt.c b/src/libvirt.c
index f65cc24..75d07e6 100644
--- a/src/libvirt.c
+++ b/src/libvirt.c
@@ -912,6 +912,10 @@ virGetVersion(unsigned long *libVer, const char *type,
         if (STRCASEEQ(type, "LXC"))
             *typeVer = LIBVIR_VERSION_NUMBER;
 # endif
+# if WITH_LIBXL
+        if (STRCASEEQ(type, "libxl"))
+            *typeVer = LIBVIR_VERSION_NUMBER;
+# endif
 # if WITH_PHYP
         if (STRCASEEQ(type, "phyp"))
             *typeVer = LIBVIR_VERSION_NUMBER;
diff --git a/src/libxl/libxl_conf.c b/src/libxl/libxl_conf.c
new file mode 100644
index 0000000..1100cc4
--- /dev/null
+++ b/src/libxl/libxl_conf.c
@@ -0,0 +1,783 @@
+/*---------------------------------------------------------------------------*/
+/*  Copyright (c) 2011 SUSE LINUX Products GmbH, Nuernberg, Germany.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
+ */
+/*---------------------------------------------------------------------------*/
+
+#include <config.h>
+
+#include <regex.h>
+#include <libxl.h>
+#include <sys/utsname.h>
+
+#include "internal.h"
+#include "logging.h"
+#include "virterror_internal.h"
+#include "datatypes.h"
+#include "files.h"
+#include "memory.h"
+#include "uuid.h"
+#include "capabilities.h"
+#include "libxl_driver.h"
+#include "libxl_conf.h"
+
+
+#define VIR_FROM_THIS VIR_FROM_LIBXL
+
+
+struct guest_arch {
+    const char *model;
+    int bits;
+    int hvm;
+    int pae;
+    int nonpae;
+    int ia64_be;
+};
+
+static const char *xen_cap_re = "(xen|hvm)-[[:digit:]]+\\.[[:digit:]]+-(x86_32|x86_64|ia64|powerpc64)(p|be)?";
+static regex_t xen_cap_rec;
+
+static virCapsPtr
+libxlBuildCapabilities(const char *hostmachine,
+                       int host_pae,
+                       struct guest_arch *guest_archs,
+                       int nr_guest_archs)
+{
+    virCapsPtr caps;
+    int i;
+
+    if ((caps = virCapabilitiesNew(hostmachine, 1, 1)) == NULL)
+        goto no_memory;
+
+    virCapabilitiesSetMacPrefix(caps, (unsigned char[]){ 0x00, 0x16, 0x3e });
+
+    if (host_pae &&
+        virCapabilitiesAddHostFeature(caps, "pae") < 0)
+        goto no_memory;
+
+    for (i = 0; i < nr_guest_archs; ++i) {
+        virCapsGuestPtr guest;
+        char const *const xen_machines[] = {guest_archs[i].hvm ? "xenfv" : "xenpv"};
+        virCapsGuestMachinePtr *machines;
+
+        if ((machines = virCapabilitiesAllocMachines(xen_machines, 1)) == NULL)
+            goto no_memory;
+
+        if ((guest = virCapabilitiesAddGuest(caps,
+                                             guest_archs[i].hvm ? "hvm" : "xen",
+                                             guest_archs[i].model,
+                                             guest_archs[i].bits,
+                                             (STREQ(hostmachine, "x86_64") ?
+                                              "/usr/lib64/xen/bin/qemu-dm" :
+                                              "/usr/lib/xen/bin/qemu-dm"),
+                                             (guest_archs[i].hvm ?
+                                              "/usr/lib/xen/boot/hvmloader" :
+                                              NULL),
+                                             1,
+                                             machines)) == NULL) {
+            virCapabilitiesFreeMachines(machines, 1);
+            goto no_memory;
+        }
+        machines = NULL;
+
+        if (virCapabilitiesAddGuestDomain(guest,
+                                          "xen",
+                                          NULL,
+                                          NULL,
+                                          0,
+                                          NULL) == NULL)
+            goto no_memory;
+
+        if (guest_archs[i].pae &&
+            virCapabilitiesAddGuestFeature(guest,
+                                           "pae",
+                                           1,
+                                           0) == NULL)
+            goto no_memory;
+
+        if (guest_archs[i].nonpae &&
+            virCapabilitiesAddGuestFeature(guest,
+                                           "nonpae",
+                                           1,
+                                           0) == NULL)
+            goto no_memory;
+
+        if (guest_archs[i].ia64_be &&
+            virCapabilitiesAddGuestFeature(guest,
+                                           "ia64_be",
+                                           1,
+                                           0) == NULL)
+            goto no_memory;
+
+        if (guest_archs[i].hvm) {
+            if (virCapabilitiesAddGuestFeature(guest,
+                                               "acpi",
+                                               1,
+                                               1) == NULL)
+                goto no_memory;
+
+            if (virCapabilitiesAddGuestFeature(guest, "apic",
+                                               1,
+                                               0) == NULL)
+                goto no_memory;
+
+            if (virCapabilitiesAddGuestFeature(guest,
+                                               "hap",
+                                               0,
+                                               1) == NULL)
+                goto no_memory;
+        }
+    }
+
+    caps->defaultConsoleTargetType = VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_XEN;
+
+    return caps;
+
+ no_memory:
+    virCapabilitiesFree(caps);
+    return NULL;
+}
+
+static virCapsPtr
+libxlMakeCapabilitiesInternal(const char *hostmachine,
+                              libxl_physinfo *phy_info,
+                              char *capabilities)
+{
+    char *str, *token;
+    regmatch_t subs[4];
+    char *saveptr = NULL;
+    int i;
+
+    int host_pae = 0;
+    struct guest_arch guest_archs[32];
+    int nr_guest_archs = 0;
+    virCapsPtr caps = NULL;
+
+    memset(guest_archs, 0, sizeof(guest_archs));
+
+    // TODO: extract pae from phy_info->phys_cap
+    // for now, better default is 1
+    (void)phy_info;
+    host_pae = 1;
+
+    /* Format of capabilities string is documented in the code in
+     * xen-unstable.hg/xen/arch/.../setup.c.
+     *
+     * It is a space-separated list of supported guest architectures.
+     *
+     * For x86:
+     *    TYP-VER-ARCH[p]
+     *    ^   ^   ^    ^
+     *    |   |   |    +-- PAE supported
+     *    |   |   +------- x86_32 or x86_64
+     *    |   +----------- the version of Xen, eg. "3.0"
+     *    +--------------- "xen" or "hvm" for para or full virt respectively
+     *
+     * For IA64:
+     *    TYP-VER-ARCH[be]
+     *    ^   ^   ^    ^
+     *    |   |   |    +-- Big-endian supported
+     *    |   |   +------- always "ia64"
+     *    |   +----------- the version of Xen, eg. "3.0"
+     *    +--------------- "xen" or "hvm" for para or full virt respectively
+     */
+
+    /* Split capabilities string into tokens. strtok_r is OK here because
+     * we "own" the buffer.  Parse out the features from each token.
+     */
+    for (str = capabilities, nr_guest_archs = 0;
+         nr_guest_archs < sizeof guest_archs / sizeof guest_archs[0]
+                 && (token = strtok_r (str, " ", &saveptr)) != NULL;
+         str = NULL) {
+        if (regexec(&xen_cap_rec, token, sizeof subs / sizeof subs[0],
+                    subs, 0) == 0) {
+            int hvm = STRPREFIX(&token[subs[1].rm_so], "hvm");
+            const char *model;
+            int bits, pae = 0, nonpae = 0, ia64_be = 0;
+
+            if (STRPREFIX(&token[subs[2].rm_so], "x86_32")) {
+                model = "i686";
+                bits = 32;
+                if (subs[3].rm_so != -1 &&
+                    STRPREFIX(&token[subs[3].rm_so], "p"))
+                    pae = 1;
+                else
+                    nonpae = 1;
+            }
+            else if (STRPREFIX(&token[subs[2].rm_so], "x86_64")) {
+                model = "x86_64";
+                bits = 64;
+            }
+            else if (STRPREFIX(&token[subs[2].rm_so], "ia64")) {
+                model = "ia64";
+                bits = 64;
+                if (subs[3].rm_so != -1 &&
+                    STRPREFIX(&token[subs[3].rm_so], "be"))
+                    ia64_be = 1;
+            }
+            else if (STRPREFIX(&token[subs[2].rm_so], "powerpc64")) {
+                model = "ppc64";
+                bits = 64;
+            } else {
+                continue;
+            }
+
+            /* Search for existing matching (model,hvm) tuple */
+            for (i = 0 ; i < nr_guest_archs ; i++) {
+                if (STREQ(guest_archs[i].model, model) &&
+                    guest_archs[i].hvm == hvm) {
+                    break;
+                }
+            }
+
+            /* Too many arch flavours - highly unlikely ! */
+            if (i >= ARRAY_CARDINALITY(guest_archs))
+                continue;
+            /* Didn't find a match, so create a new one */
+            if (i == nr_guest_archs)
+                nr_guest_archs++;
+
+            guest_archs[i].model = model;
+            guest_archs[i].bits = bits;
+            guest_archs[i].hvm = hvm;
+
+            /* Careful not to overwrite a previous positive
+               setting with a negative one here - some archs
+               can do both pae & non-pae, but Xen reports
+               separately capabilities so we're merging archs */
+            if (pae)
+                guest_archs[i].pae = pae;
+            if (nonpae)
+                guest_archs[i].nonpae = nonpae;
+            if (ia64_be)
+                guest_archs[i].ia64_be = ia64_be;
+        }
+    }
+
+    if ((caps = libxlBuildCapabilities(hostmachine,
+                                       host_pae,
+                                       guest_archs,
+                                       nr_guest_archs)) == NULL)
+        goto no_memory;
+
+    return caps;
+
+ no_memory:
+    virReportOOMError();
+    virCapabilitiesFree(caps);
+    return NULL;
+}
+
+static int
+libxlMakeDomCreateInfo(virDomainDefPtr def, libxl_domain_create_info *c_info)
+{
+    char uuidstr[VIR_UUID_STRING_BUFLEN];
+
+    libxl_init_create_info(c_info);
+
+    c_info->hvm = STREQ(def->os.type, "hvm");
+    if ((c_info->name = strdup(def->name)) == NULL) {
+        virReportOOMError();
+        goto error;
+    }
+
+    virUUIDFormat(def->uuid, uuidstr);
+    if (libxl_uuid_from_string(&c_info->uuid, uuidstr) ) {
+        libxlError(VIR_ERR_INTERNAL_ERROR,
+                 _("libxenlight failed to parse UUID '%s'"), uuidstr);
+        goto error;
+    }
+
+    return 0;
+
+error:
+    libxl_domain_create_info_destroy(c_info);
+    return -1;
+}
+
+static int
+libxlMakeDomBuildInfo(virDomainDefPtr def, libxl_domain_config *d_config)
+{
+    libxl_domain_build_info *b_info = &d_config->b_info;
+    int hvm = STREQ(def->os.type, "hvm");
+
+    libxl_init_build_info(b_info, &d_config->c_info);
+
+    b_info->hvm = hvm;
+    b_info->max_vcpus = def->maxvcpus;
+    b_info->cur_vcpus = def->vcpus;
+    if (def->clock.ntimers > 0 &&
+        def->clock.timers[0]->name == VIR_DOMAIN_TIMER_NAME_TSC) {
+        switch (def->clock.timers[0]->mode) {
+            case VIR_DOMAIN_TIMER_MODE_NATIVE:
+                b_info->tsc_mode = 2;
+                break;
+            case VIR_DOMAIN_TIMER_MODE_PARAVIRT:
+                b_info->tsc_mode = 3;
+                break;
+            default:
+                b_info->tsc_mode = 1;
+        }
+    }
+    b_info->max_memkb = def->mem.max_balloon;
+    b_info->target_memkb = def->mem.cur_balloon;
+    if (hvm) {
+        b_info->u.hvm.pae = def->features & (1 << VIR_DOMAIN_FEATURE_PAE);
+        b_info->u.hvm.apic = def->features & (1 << VIR_DOMAIN_FEATURE_APIC);
+        b_info->u.hvm.acpi = def->features & (1 << VIR_DOMAIN_FEATURE_ACPI);
+    } else {
+        if (def->os.bootloader) {
+            if ((b_info->u.pv.bootloader = strdup(def->os.bootloader)) == NULL) {
+                virReportOOMError();
+                goto error;
+            }
+        }
+        if (def->os.bootloaderArgs) {
+            if ((b_info->u.pv.bootloader_args = strdup(def->os.bootloaderArgs)) == NULL) {
+                virReportOOMError();
+                goto error;
+            }
+        }
+        if (def->os.cmdline) {
+            if ((b_info->u.pv.cmdline = strdup(def->os.cmdline)) == NULL) {
+                virReportOOMError();
+                goto error;
+            }
+        }
+        if (def->os.kernel) {
+            /* libxl_init_build_info() sets kernel.path = strdup("hvmloader") */
+            free(b_info->kernel.path);
+            if ((b_info->kernel.path = strdup(def->os.kernel)) == NULL) {
+                virReportOOMError();
+                goto error;
+            }
+        }
+        if (def->os.initrd) {
+            if ((b_info->u.pv.ramdisk.path = strdup(def->os.initrd)) == NULL) {
+                virReportOOMError();
+                goto error;
+            }
+        }
+    }
+
+    return 0;
+
+error:
+    libxl_domain_build_info_destroy(b_info);
+    return -1;
+}
+
+static int
+libxlMakeDiskList(virDomainDefPtr def, libxl_domain_config *d_config)
+{
+    virDomainDiskDefPtr *l_disks = def->disks;
+    int ndisks = def->ndisks;
+    libxl_device_disk *x_disks;
+    int i;
+
+    if (VIR_ALLOC_N(x_disks, ndisks) < 0) {
+        virReportOOMError();
+        return -1;
+    }
+
+    for (i = 0; i < ndisks; i++) {
+        if (l_disks[i]->src &&
+             (x_disks[i].physpath = strdup(l_disks[i]->src)) == NULL) {
+            virReportOOMError();
+            goto error;
+        }
+
+        if (l_disks[i]->dst &&
+            (x_disks[i].virtpath = strdup(l_disks[i]->dst)) == NULL) {
+            virReportOOMError();
+            goto error;
+        }
+
+        if (l_disks[i]->driverName) {
+            if (STREQ(l_disks[i]->driverName, "tap") ||
+                STREQ(l_disks[i]->driverName, "tap2")) {
+                if (l_disks[i]->driverType &&
+                    STREQ(l_disks[i]->driverType, "qcow2"))
+                    x_disks[i].phystype = PHYSTYPE_QCOW2;
+                else if (l_disks[i]->driverType &&
+                         STREQ(l_disks[i]->driverType, "aio"))
+                    x_disks[i].phystype = PHYSTYPE_AIO;
+                else if (l_disks[i]->driverType &&
+                         STREQ(l_disks[i]->driverType, "vhd"))
+                    x_disks[i].phystype = PHYSTYPE_VHD;
+            } else if (STREQ(l_disks[i]->driverName, "file")) {
+                x_disks[i].phystype = PHYSTYPE_FILE;
+            } else if (STREQ(l_disks[i]->driverName, "phy")) {
+                x_disks[i].phystype = PHYSTYPE_PHY;
+            }
+        } else {
+            /* Default to file?? */
+            x_disks[i].phystype = PHYSTYPE_FILE;
+        }
+
+        x_disks[i].unpluggable = 1;
+        x_disks[i].readwrite = !l_disks[i]->readonly;
+        x_disks[i].is_cdrom =
+                l_disks[i]->device == VIR_DOMAIN_DISK_DEVICE_CDROM ? 1 : 0;
+    }
+
+    d_config->disks = x_disks;
+    d_config->num_disks = ndisks;
+
+    return 0;
+
+error:
+    for (i = 0; i < ndisks; i++)
+        libxl_device_disk_destroy(&x_disks[i]);
+    VIR_FREE(x_disks);
+    return -1;
+}
+
+static int
+libxlMakeNicList(virDomainDefPtr def,  libxl_domain_config *d_config)
+{
+    virDomainNetDefPtr *l_nics = def->nets;
+    int nnics = def->nnets;
+    libxl_device_nic *x_nics;
+    int i;
+
+    if (VIR_ALLOC_N(x_nics, nnics) < 0) {
+        virReportOOMError();
+        return -1;
+    }
+
+    for (i = 0; i < nnics; i++) {
+        x_nics[i].devid = i;
+
+        // TODO: Where is mtu stored?
+        x_nics[i].mtu = 1492;
+
+        memcpy(x_nics[i].mac, l_nics[i]->mac, sizeof(libxl_mac));
+
+        if (l_nics[i]->model && !STREQ(l_nics[i]->model, "netfront")) {
+            if ((x_nics[i].model = strdup(l_nics[i]->model)) == NULL) {
+                virReportOOMError();
+                goto error;
+            }
+            x_nics[i].nictype = NICTYPE_IOEMU;
+        } else {
+            x_nics[i].nictype = NICTYPE_VIF;
+        }
+
+        if (l_nics[i]->ifname &&
+            (x_nics[i].ifname = strdup(l_nics[i]->ifname)) == NULL) {
+            virReportOOMError();
+            goto error;
+        }
+
+        if (l_nics[i]->type == VIR_DOMAIN_NET_TYPE_BRIDGE) {
+            if (l_nics[i]->data.bridge.brname &&
+                (x_nics[i].bridge =
+                 strdup(l_nics[i]->data.bridge.brname)) == NULL) {
+                virReportOOMError();
+                goto error;
+            }
+            if (l_nics[i]->data.bridge.script &&
+                (x_nics[i].script =
+                 strdup(l_nics[i]->data.bridge.script)) == NULL) {
+                virReportOOMError();
+                goto error;
+            }
+        }
+
+        //TODO
+        //x_nics[i].ip = ;
+    }
+
+    d_config->vifs = x_nics;
+    d_config->num_vifs = nnics;
+
+    return 0;
+
+error:
+    for (i = 0; i < nnics; i++)
+        libxl_device_nic_destroy(&x_nics[i]);
+    VIR_FREE(x_nics);
+    return -1;
+}
+
+static int
+libxlMakeVfbList(virDomainDefPtr def, libxl_domain_config *d_config)
+{
+    virDomainGraphicsDefPtr *l_vfbs = def->graphics;
+    int nvfbs = def->ngraphics;
+    libxl_device_vfb *x_vfbs;
+    libxl_device_vkb *x_vkbs;
+    int i;
+
+    if (VIR_ALLOC_N(x_vfbs, nvfbs) < 0) {
+        virReportOOMError();
+        return -1;
+    }
+    if (VIR_ALLOC_N(x_vkbs, nvfbs) < 0) {
+        virReportOOMError();
+        VIR_FREE(x_vfbs);
+        return -1;
+    }
+
+    for (i = 0; i < nvfbs; i++) {
+        libxl_device_vfb_init(&x_vfbs[i], i);
+        libxl_device_vkb_init(&x_vkbs[i], i);
+
+        switch (l_vfbs[i]->type) {
+            case VIR_DOMAIN_GRAPHICS_TYPE_SDL:
+                x_vfbs[i].sdl = 1;
+                if (l_vfbs[i]->data.sdl.display &&
+                    (x_vfbs[i].display =
+                     strdup(l_vfbs[i]->data.sdl.display)) == NULL) {
+                    virReportOOMError();
+                    goto error;
+                }
+                if (l_vfbs[i]->data.sdl.xauth &&
+                    (x_vfbs[i].xauthority =
+                     strdup(l_vfbs[i]->data.sdl.xauth)) == NULL) {
+                    virReportOOMError();
+                    goto error;
+                }
+                break;
+            case  VIR_DOMAIN_GRAPHICS_TYPE_VNC:
+                x_vfbs[i].vnc = 1;
+                if (l_vfbs[i]->data.vnc.autoport)
+                    x_vfbs[i].vncunused = 1;
+                else
+                    x_vfbs[i].vncdisplay = l_vfbs[i]->data.vnc.port;
+
+                if (l_vfbs[i]->data.vnc.listenAddr) {
+                    /* libxl_device_vfb_init() does strdup("127.0.0.1") */
+                    free(x_vfbs[i].vnclisten);
+                    if ((x_vfbs[i].vnclisten =
+                     strdup(l_vfbs[i]->data.vnc.listenAddr)) == NULL) {
+                        virReportOOMError();
+                        goto error;
+                    }
+                }
+                if (l_vfbs[i]->data.vnc.keymap &&
+                    (x_vfbs[i].keymap =
+                     strdup(l_vfbs[i]->data.vnc.keymap)) == NULL) {
+                    virReportOOMError();
+                    goto error;
+                }
+                break;
+        }
+    }
+
+    d_config->vfbs = x_vfbs;
+    d_config->vkbs = x_vkbs;
+    d_config->num_vfbs = d_config->num_vkbs = nvfbs;
+
+    return 0;
+
+error:
+    for (i = 0; i < nvfbs; i++) {
+        libxl_device_vfb_destroy(&x_vfbs[i]);
+        libxl_device_vkb_destroy(&x_vkbs[i]);
+    }
+    VIR_FREE(x_vfbs);
+    VIR_FREE(x_vkbs);
+    return -1;
+}
+
+static int
+libxlMakeDeviceModelInfo(virDomainDefPtr def, libxl_domain_config *d_config)
+{
+    libxl_device_model_info *dm_info = &d_config->dm_info;
+
+    libxl_init_dm_info(dm_info, &d_config->c_info, &d_config->b_info);
+    if (d_config->b_info.hvm)
+        dm_info->type = XENFV;
+    else
+        dm_info->type = XENPV;
+
+    if (def->ngraphics > 0) {
+        if (def->graphics[0]->type == VIR_DOMAIN_GRAPHICS_TYPE_VNC) {
+            dm_info->vnc = 1;
+            if (def->graphics[0]->data.vnc.listenAddr) {
+                free(dm_info->vnclisten);
+                if ((dm_info->vnclisten = strdup(def->graphics[0]->data.vnc.listenAddr)) == NULL) {
+                    virReportOOMError();
+                    goto error;
+                }
+            }
+            if (def->graphics[0]->data.vnc.keymap &&
+                (dm_info->keymap = strdup(def->graphics[0]->data.vnc.keymap)) == NULL) {
+                virReportOOMError();
+                goto error;
+            }
+            if (def->graphics[0]->data.vnc.autoport)
+                dm_info->vncunused = 1;
+            else
+                dm_info->vncdisplay = def->graphics[0]->data.vnc.port;
+        } else if (def->graphics[0]->type == VIR_DOMAIN_GRAPHICS_TYPE_SDL) {
+            dm_info->sdl = 1;
+        }
+    } else if (def->ngraphics == 0) {
+        dm_info->nographic = 1;
+    }
+
+    //TODO
+    dm_info->serial = strdup("pty");
+    //dm_info->boot = ;
+    //dm_info->usb = ;
+    //dm_info->usbdevice = ;
+    //dm_info->soundhw = ;
+    //dm_info=>vncpasswd = ;
+
+    return 0;
+
+error:
+    libxl_device_model_info_destroy(dm_info);
+    return -1;
+}
+
+virCapsPtr
+libxlMakeCapabilities(libxl_ctx *ctx)
+{
+    libxl_physinfo phy_info;
+    const libxl_version_info *ver_info;
+    struct utsname utsname;
+
+    regcomp (&xen_cap_rec, xen_cap_re, REG_EXTENDED);
+
+    if (libxl_get_physinfo(ctx, &phy_info) != 0) {
+        libxlError(VIR_ERR_INTERNAL_ERROR,
+                   _("Failed to get node physical info from libxenlight"));
+        return NULL;
+    }
+
+    if ((ver_info = libxl_get_version_info(ctx)) == NULL) {
+        libxlError(VIR_ERR_INTERNAL_ERROR,
+                   _("Failed to get version info from libxenlight"));
+        return NULL;
+    }
+
+    uname(&utsname);
+
+    return libxlMakeCapabilitiesInternal(utsname.machine,
+                                         &phy_info,
+                                         ver_info->capabilities);
+}
+
+int
+libxlLoadRunningDomains(libxlDriverPrivatePtr driver)
+{
+    libxl_dominfo *domains;
+    int n_domains;
+    int i;
+    int ret = -1;
+    int len;
+    uint8_t *data = NULL;
+    virDomainDefPtr def = NULL;
+    virDomainObjPtr vm = NULL;
+
+    if (!(domains = libxl_list_domain(&driver->ctx, &n_domains))) {
+        libxlError(VIR_ERR_INTERNAL_ERROR,
+                   _("Failed to retrieve domain list from libxenlight"));
+        return -1;
+    }
+
+    for (i = 0; i < n_domains; i++) {
+        /* ignore dom0?? */
+        if (domains[i].domid == 0)
+            continue;
+
+        /* Ignore domains that don't contain libvirtXML */
+        if (libxl_userdata_retrieve(&driver->ctx, domains[i].domid,
+                                    "libvirt-xml", &data, &len)) {
+            libxlError(VIR_ERR_INTERNAL_ERROR,
+                       _("Failed to retrieve domain userdata from libxenlight"));
+            continue;
+        }
+        /* Ensure userdata_retrieve gave us some data */
+        if (len == 0)
+            continue;
+
+        if (!(def = virDomainDefParseString(driver->caps, (char *)data, 0))) {
+            libxlError(VIR_ERR_INTERNAL_ERROR,
+                       _("Failed to parse userdata from libxenlight"));
+            goto cleanup;
+        }
+
+        if (!(vm = virDomainAssignDef(driver->caps,
+                                      &driver->domains, def, false)))
+            goto cleanup;
+
+        def = NULL;
+        free(data);
+        data = NULL;
+        vm->persistent = 1;
+
+        if (virDomainSaveConfig(driver->configDir,
+                                vm->newDef ? vm->newDef : vm->def) < 0) {
+            virDomainRemoveInactive(&driver->domains, vm);
+            vm = NULL;
+            goto cleanup;
+        }
+        virDomainObjUnlock(vm);
+        vm = NULL;
+    }
+    ret = 0;
+
+cleanup:
+    if (vm)
+        virDomainObjUnlock(vm);
+    virDomainDefFree(def);
+    free(data);
+    free(domains);
+    return ret;
+}
+
+int
+libxlBuildDomainConfig(virDomainDefPtr def, libxl_domain_config *d_config)
+{
+
+    if (libxlMakeDomCreateInfo(def, &d_config->c_info) < 0)
+        return -1;
+
+    if (libxlMakeDomBuildInfo(def, d_config) < 0) {
+        goto error;
+    }
+
+    if (libxlMakeDiskList(def, d_config) < 0) {
+        goto error;
+    }
+
+    if (libxlMakeNicList(def, d_config) < 0) {
+        goto error;
+    }
+
+    if (libxlMakeVfbList(def, d_config) < 0) {
+        goto error;
+    }
+
+    if (libxlMakeDeviceModelInfo(def, d_config) < 0) {
+        goto error;
+    }
+
+    d_config->on_reboot = def->onReboot;
+    d_config->on_poweroff = def->onPoweroff;
+    d_config->on_crash = def->onCrash;
+
+    return 0;
+
+error:
+    libxl_domain_config_destroy(d_config);
+    return -1;
+}
diff --git a/src/libxl/libxl_conf.h b/src/libxl/libxl_conf.h
new file mode 100644
index 0000000..1c4eff3
--- /dev/null
+++ b/src/libxl/libxl_conf.h
@@ -0,0 +1,88 @@
+/*---------------------------------------------------------------------------*/
+/*  Copyright (c) 2011 SUSE LINUX Products GmbH, Nuernberg, Germany.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
+ */
+/*---------------------------------------------------------------------------*/
+
+#ifndef LIBXL_CONF_H
+# define LIBXL_CONF_H
+
+# include <config.h>
+
+# include <libxl.h>
+
+# include "internal.h"
+# include "domain_conf.h"
+# include "capabilities.h"
+# include "configmake.h"
+
+
+# define LIBXL_CONFIG_DIR SYSCONFDIR "/libvirt/libxl"
+# define LIBXL_AUTOSTART_DIR LIBXL_CONFIG_DIR "/autostart"
+# define LIBXL_STATE_DIR LOCALSTATEDIR "/run/libvirt/libxl"
+# define LIBXL_LOG_DIR LOCALSTATEDIR "/log/libvirt/libxl"
+# define LIBXL_LIB_DIR LOCALSTATEDIR "/lib/libvirt/libxl"
+# define LIBXL_SAVE_DIR LIBXL_LIB_DIR "/save"
+
+
+typedef struct _libxlDriverPrivate libxlDriverPrivate;
+typedef libxlDriverPrivate *libxlDriverPrivatePtr;
+struct _libxlDriverPrivate {
+    virMutex lock;
+    virCapsPtr caps;
+    unsigned int version;
+
+    FILE *logger_file;
+    xentoollog_logger *logger;
+    /* libxl ctx for driver wide ops; getVersion, getNodeInfo, ... */
+    libxl_ctx ctx;
+
+    virDomainObjList domains;
+
+    char *configDir;
+    char *autostartDir;
+    char *logDir;
+    char *stateDir;
+    char *libDir;
+    char *saveDir;
+};
+
+typedef struct _libxlDomainObjPrivate libxlDomainObjPrivate;
+typedef libxlDomainObjPrivate *libxlDomainObjPrivatePtr;
+struct _libxlDomainObjPrivate {
+    /* per domain libxl ctx */
+    libxl_ctx ctx;
+    libxl_waiter *dWaiter;
+    int waiterFD;
+    int eventHdl;
+};
+
+
+# define libxlError(code, ...)                                     \
+    virReportErrorHelper(NULL, VIR_FROM_LIBXL, code, __FILE__,     \
+                         __FUNCTION__, __LINE__, __VA_ARGS__)
+
+virCapsPtr
+libxlMakeCapabilities(libxl_ctx *ctx);
+
+int
+libxlLoadRunningDomains(libxlDriverPrivatePtr driver);
+
+int
+libxlBuildDomainConfig(virDomainDefPtr def, libxl_domain_config *d_config);
+
+
+#endif /* LIBXL_CONF_H */
diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c
new file mode 100644
index 0000000..d581e7b
--- /dev/null
+++ b/src/libxl/libxl_driver.c
@@ -0,0 +1,1280 @@
+/*---------------------------------------------------------------------------*/
+/*  Copyright (c) 2011 SUSE LINUX Products GmbH, Nuernberg, Germany.
+ *  Copyright (C) 2011 Univention GmbH.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
+ */
+/*---------------------------------------------------------------------------*/
+
+#include <config.h>
+
+#include <sys/utsname.h>
+#include <libxl.h>
+
+#include "internal.h"
+#include "logging.h"
+#include "virterror_internal.h"
+#include "datatypes.h"
+#include "files.h"
+#include "memory.h"
+#include "event.h"
+#include "uuid.h"
+#include "libxl_driver.h"
+#include "libxl_conf.h"
+
+
+#define VIR_FROM_THIS VIR_FROM_LIBXL
+
+#define LIBXL_DOM_REQ_POWEROFF 0
+#define LIBXL_DOM_REQ_REBOOT   1
+#define LIBXL_DOM_REQ_SUSPEND  2
+#define LIBXL_DOM_REQ_CRASH    3
+#define LIBXL_DOM_REQ_HALT     4
+
+static libxlDriverPrivatePtr libxl_driver = NULL;
+
+
+/* Function declarations */
+static int
+libxlVmStart(virDomainObjPtr vm, bool start_paused);
+
+
+/* Function definitions */
+static void
+libxlDriverLock(libxlDriverPrivatePtr driver)
+{
+    virMutexLock(&driver->lock);
+}
+
+static void
+libxlDriverUnlock(libxlDriverPrivatePtr driver)
+{
+    virMutexUnlock(&driver->lock);
+}
+
+static void *libxlDomainObjPrivateAlloc(void)
+{
+    libxlDomainObjPrivatePtr priv;
+
+    if (VIR_ALLOC(priv) < 0)
+        return NULL;
+
+    libxl_ctx_init(&priv->ctx, LIBXL_VERSION, libxl_driver->logger);
+    priv->waiterFD = -1;
+    priv->eventHdl = -1;
+
+    return priv;
+}
+
+static void libxlDomainObjPrivateFree(void *data)
+{
+    libxlDomainObjPrivatePtr priv = data;
+
+    if (priv->dWaiter) {
+        libxl_free_waiter(priv->dWaiter);
+        VIR_FREE(priv->dWaiter);
+    }
+    libxl_ctx_free(&priv->ctx);
+    VIR_FREE(priv);
+}
+
+static void libxlEventHandler(int watch,
+                              int fd,
+                              int events,
+                              void *data)
+{
+    libxlDriverPrivatePtr driver = libxl_driver;
+    virDomainObjPtr vm = data;
+    libxlDomainObjPrivatePtr priv;
+    libxl_event event;
+    libxl_dominfo info;
+
+    libxlDriverLock(driver);
+    virDomainObjLock(vm);
+    libxlDriverUnlock(driver);
+
+    priv = vm->privateData;
+
+    memset(&event, 0, sizeof(event));
+    memset(&info, 0, sizeof(info));
+
+    if (priv->waiterFD != fd || priv->eventHdl != watch) {
+        virEventRemoveHandle(watch);
+        goto cleanup;
+    }
+
+    if (!(events & VIR_EVENT_HANDLE_READABLE)) {
+        goto cleanup;
+    }
+
+    if (libxl_get_event(&priv->ctx, &event)) {
+        goto cleanup;
+    }
+
+    if (event.type == LIBXL_EVENT_DOMAIN_DEATH) {
+        /* libxl_event_get_domain_death_info returns 1 if death
+         * event was for this domid */
+        if (libxl_event_get_domain_death_info(&priv->ctx,
+                                              vm->def->id,
+                                              &event,
+                                              &info) != 1) {
+            goto cleanup;
+        }
+
+        virEventRemoveHandle(watch);
+        if (info.shutdown_reason == SHUTDOWN_poweroff) {
+            libxl_domain_destroy(&priv->ctx, vm->def->id, 0);
+            if (vm->persistent) {
+                vm->def->id = -1;
+                vm->state = VIR_DOMAIN_SHUTOFF;
+            } else {
+                libxl_free_waiter(priv->dWaiter);
+                VIR_FREE(priv->dWaiter);
+                virDomainRemoveInactive(&driver->domains, vm);
+                vm = NULL;
+            }
+        } else if (info.shutdown_reason == SHUTDOWN_reboot) {
+            libxl_domain_destroy(&priv->ctx, vm->def->id, 0);
+            vm->def->id = -1;
+            vm->state = VIR_DOMAIN_SHUTOFF;
+            sleep(1);
+            libxlVmStart(vm, 0);
+        } else {
+            VIR_INFO("Unhandled shutdown_reason %d", info.shutdown_reason);
+        }
+    }
+
+cleanup:
+    if (vm)
+        virDomainObjUnlock(vm);
+}
+
+static int
+libxlCreateDomEvents(virDomainObjPtr vm)
+{
+    libxlDomainObjPrivatePtr priv = vm->privateData;
+    int fd;
+
+    /* Do we already have a waiter for this domain? */
+    if (priv->dWaiter == NULL) {
+        if (VIR_ALLOC(priv->dWaiter) < 0) {
+            virReportOOMError();
+            return -1;
+        }
+
+        if (libxl_wait_for_domain_death(&priv->ctx, vm->def->id, priv->dWaiter)) {
+            goto error;
+        }
+    }
+
+    libxl_get_wait_fd(&priv->ctx, &fd);
+    if (fd < 0) {
+        goto error;
+    }
+
+    priv->waiterFD = fd;
+    if ((priv->eventHdl = virEventAddHandle(
+             fd,
+             VIR_EVENT_HANDLE_READABLE | VIR_EVENT_HANDLE_ERROR,
+             libxlEventHandler,
+             vm, NULL)) < 0) {
+        goto error;
+    }
+
+    return 0;
+
+error:
+    libxl_free_waiter(priv->dWaiter);
+    VIR_FREE(priv->dWaiter);
+    return -1;
+}
+
+static int
+libxlVmStart(virDomainObjPtr vm, bool start_paused)
+{
+    libxl_domain_config d_config;
+    virDomainDefPtr def = vm->def;
+    int ret;
+    uint32_t domid = 0;
+    char *dom_xml = NULL;
+    pid_t child_console_pid = -1;
+    libxlDomainObjPrivatePtr priv = vm->privateData;
+
+    memset(&d_config, 0, sizeof(d_config));
+
+    if (libxlBuildDomainConfig(def, &d_config) < 0 )
+        return -1;
+
+    //TODO: Balloon dom0 ??
+    //ret = freemem(&d_config->b_info, &d_config->dm_info);
+
+    ret = libxl_domain_create_new(&priv->ctx, &d_config,
+                                  NULL, &child_console_pid, &domid);
+    if (ret) {
+        libxlError(VIR_ERR_INTERNAL_ERROR,
+                   _("libxenlight failed to create new domain '%s'"),
+                   d_config.c_info.name);
+        goto error;
+    }
+
+    def->id = domid;
+    if ((dom_xml = virDomainDefFormat(def, 0)) == NULL)
+        goto error;
+
+    if(libxl_userdata_store(&priv->ctx, domid, "libvirt-xml",
+                            (uint8_t *)dom_xml, strlen(dom_xml) + 1)) {
+        libxlError(VIR_ERR_INTERNAL_ERROR,
+                   _("libxenlight failed to store userdata"));
+        goto error;
+    }
+
+    if (libxlCreateDomEvents(vm) < 0)
+        goto error;
+
+    if (!start_paused) {
+        libxl_domain_unpause(&priv->ctx, domid);
+        vm->state = VIR_DOMAIN_RUNNING;
+    } else {
+        vm->state = VIR_DOMAIN_PAUSED;
+    }
+
+    libxl_domain_config_destroy(&d_config);
+    VIR_FREE(dom_xml);
+    return 0;
+
+error:
+    if (domid > 0) {
+        libxl_domain_destroy(&priv->ctx, domid, 0);
+        def->id = -1;
+    }
+    libxl_domain_config_destroy(&d_config);
+    VIR_FREE(dom_xml);
+    return -1;
+}
+
+static int
+libxlShutdown(void)
+{
+    if (!libxl_driver)
+        return -1;
+
+    libxlDriverLock(libxl_driver);
+    virCapabilitiesFree(libxl_driver->caps);
+    libxl_ctx_free(&libxl_driver->ctx);
+    xtl_logger_destroy(libxl_driver->logger);
+    if (libxl_driver->logger_file)
+        VIR_FORCE_FCLOSE(libxl_driver->logger_file);
+
+    virDomainObjListDeinit(&libxl_driver->domains);
+
+    VIR_FREE(libxl_driver->configDir);
+    VIR_FREE(libxl_driver->autostartDir);
+    VIR_FREE(libxl_driver->logDir);
+    VIR_FREE(libxl_driver->stateDir);
+    VIR_FREE(libxl_driver->libDir);
+    VIR_FREE(libxl_driver->saveDir);
+
+    libxlDriverUnlock(libxl_driver);
+    virMutexDestroy(&libxl_driver->lock);
+    VIR_FREE(libxl_driver);
+
+    return 0;
+}
+
+static int
+libxlStartup(int privileged) {
+    const libxl_version_info *ver_info;
+    char *log_file = NULL;
+
+    /* Check that the user is root, silently disable if not */
+    if (!privileged) {
+        VIR_INFO0("Not running privileged, disabling libxenlight driver");
+        return 0;
+    }
+
+    if (VIR_ALLOC(libxl_driver) < 0)
+        return -1;
+
+    if (virMutexInit(&libxl_driver->lock) < 0) {
+        VIR_ERROR0(_("cannot initialize mutex"));
+        VIR_FREE(libxl_driver);
+        return -1;
+    }
+    libxlDriverLock(libxl_driver);
+
+    if (virDomainObjListInit(&libxl_driver->domains) < 0)
+        goto out_of_memory;
+
+    if (virAsprintf(&libxl_driver->configDir,
+                    "%s", LIBXL_CONFIG_DIR) == -1)
+        goto out_of_memory;
+
+    if (virAsprintf(&libxl_driver->autostartDir,
+                    "%s", LIBXL_AUTOSTART_DIR) == -1)
+        goto out_of_memory;
+
+    if (virAsprintf(&libxl_driver->logDir,
+                    "%s", LIBXL_LOG_DIR) == -1)
+        goto out_of_memory;
+
+    if (virAsprintf(&libxl_driver->stateDir,
+                    "%s", LIBXL_STATE_DIR) == -1)
+        goto out_of_memory;
+
+    if (virAsprintf(&libxl_driver->libDir,
+                    "%s", LIBXL_LIB_DIR) == -1)
+        goto out_of_memory;
+
+    if (virAsprintf(&libxl_driver->saveDir,
+                    "%s", LIBXL_SAVE_DIR) == -1)
+        goto out_of_memory;
+
+    if (virFileMakePath(libxl_driver->logDir) != 0) {
+        char ebuf[1024];
+        VIR_ERROR(_("Failed to create log dir '%s': %s"),
+                  libxl_driver->logDir, virStrerror(errno, ebuf, sizeof ebuf));
+        goto error;
+    }
+    if (virFileMakePath(libxl_driver->stateDir) != 0) {
+        char ebuf[1024];
+        VIR_ERROR(_("Failed to create state dir '%s': %s"),
+                  libxl_driver->stateDir, virStrerror(errno, ebuf, sizeof ebuf));
+        goto error;
+    }
+    if (virFileMakePath(libxl_driver->libDir) != 0) {
+        char ebuf[1024];
+        VIR_ERROR(_("Failed to create lib dir '%s': %s"),
+                  libxl_driver->libDir, virStrerror(errno, ebuf, sizeof ebuf));
+        goto error;
+    }
+    if (virFileMakePath(libxl_driver->saveDir) != 0) {
+        char ebuf[1024];
+        VIR_ERROR(_("Failed to create save dir '%s': %s"),
+                  libxl_driver->saveDir, virStrerror(errno, ebuf, sizeof ebuf));
+        goto error;
+    }
+
+    if (virAsprintf(&log_file, "%s/libxl.log", libxl_driver->logDir) < 0) {
+        goto out_of_memory;
+    }
+
+    if ((libxl_driver->logger_file = fopen(log_file, "a")) == NULL)  {
+        virReportSystemError(errno,
+                             _("failed to create logfile %s"),
+                             log_file);
+        goto error;
+    }
+    VIR_FREE(log_file);
+
+    libxl_driver->logger =
+            (xentoollog_logger*)xtl_createlogger_stdiostream(libxl_driver->logger_file, XTL_DEBUG,  0);
+    if (!libxl_driver->logger) {
+        VIR_ERROR0(_("cannot create logger for libxenlight"));
+        goto error;
+    }
+
+    if (libxl_ctx_init(&libxl_driver->ctx,
+                       LIBXL_VERSION,
+                       libxl_driver->logger)) {
+        VIR_ERROR0(_("cannot initialize libxenlight context"));
+        goto error;
+    }
+
+    if ((ver_info = libxl_get_version_info(&libxl_driver->ctx)) == NULL) {
+        VIR_ERROR0(_("cannot version information from libxenlight"));
+        goto error;
+    }
+    libxl_driver->version = (ver_info->xen_version_major * 1000000) +
+            (ver_info->xen_version_minor * 1000);
+
+    if ((libxl_driver->caps =
+         libxlMakeCapabilities(&libxl_driver->ctx)) == NULL) {
+        VIR_ERROR0(_("cannot create capabilities for libxenlight"));
+        goto error;
+    }
+
+    libxl_driver->caps->privateDataAllocFunc = libxlDomainObjPrivateAlloc;
+    libxl_driver->caps->privateDataFreeFunc = libxlDomainObjPrivateFree;
+
+    /* Get running domains from libxenlight */
+    if (libxlLoadRunningDomains(libxl_driver) < 0)
+        goto error;
+
+    /* Then inactive persistent configs */
+    if (virDomainLoadAllConfigs(libxl_driver->caps,
+                                &libxl_driver->domains,
+                                libxl_driver->configDir,
+                                libxl_driver->autostartDir,
+                                0, NULL, NULL) < 0)
+        goto error;
+
+    libxlDriverUnlock(libxl_driver);
+
+    // TODO: autostart domains
+    //libxlAutostartConfigs(libxl_driver);
+
+    return 0;
+
+out_of_memory:
+    virReportOOMError();
+error:
+    VIR_FREE(log_file);
+    if (libxl_driver)
+        libxlDriverUnlock(libxl_driver);
+    libxlShutdown();
+    return -1;
+}
+
+/**
+ * libxlReload:
+ *
+ * Function to restart the libxenligt driver.  Configuration files
+ * will be reloaded and driver state updated.
+ */
+static int
+libxlReload(void)
+{
+    if (!libxl_driver)
+        return 0;
+
+    libxlDriverLock(libxl_driver);
+    virDomainLoadAllConfigs(libxl_driver->caps,
+                            &libxl_driver->domains,
+                            libxl_driver->configDir,
+                            libxl_driver->autostartDir,
+                            0, NULL, libxl_driver);
+    libxlDriverUnlock(libxl_driver);
+
+    // TODO
+    //libxlAutostartConfigs(libxl_driver);
+
+    return 0;
+}
+
+static int
+libxlActive(void)
+{
+    if (!libxl_driver)
+        return 0;
+
+    return 1;
+}
+
+static virDrvOpenStatus
+libxlOpen(virConnectPtr conn,
+          virConnectAuthPtr auth ATTRIBUTE_UNUSED,
+          int flags ATTRIBUTE_UNUSED)
+{
+    if (conn->uri == NULL) {
+        if (libxl_driver == NULL)
+            return VIR_DRV_OPEN_DECLINED;
+
+        conn->uri = xmlParseURI("libxl:///");
+        if (!conn->uri) {
+            virReportOOMError();
+            return VIR_DRV_OPEN_ERROR;
+        }
+    } else {
+        if (conn->uri->scheme == NULL || STRNEQ(conn->uri->scheme, "libxl"))
+            return VIR_DRV_OPEN_DECLINED;
+
+        /* If server name is given, its for remote driver */
+        if (conn->uri->server != NULL)
+            return VIR_DRV_OPEN_DECLINED;
+
+        if (libxl_driver == NULL) {
+            libxlError(VIR_ERR_INTERNAL_ERROR, "%s",
+                       _("libxenlight state driver is not active"));
+            return VIR_DRV_OPEN_ERROR;
+        }
+
+        /* /session isn't supported in libxenlight */
+        if (conn->uri->path &&
+            STRNEQ(conn->uri->path, "") &&
+            STRNEQ(conn->uri->path, "/") &&
+            STRNEQ(conn->uri->path, "/system")) {
+            libxlError(VIR_ERR_INTERNAL_ERROR,
+                       _("unexpected Xen URI path '%s', try libxl:///"),
+                       NULLSTR(conn->uri->path));
+            return VIR_DRV_OPEN_ERROR;
+        }
+    }
+
+    conn->privateData = libxl_driver;
+
+    return VIR_DRV_OPEN_SUCCESS;
+};
+
+static int
+libxlClose(virConnectPtr conn ATTRIBUTE_UNUSED)
+{
+    conn->privateData = NULL;
+    return 0;
+}
+
+static const char *
+libxlGetType(virConnectPtr conn ATTRIBUTE_UNUSED)
+{
+    return "libxl";
+}
+
+static int
+libxlGetVersion(virConnectPtr conn, unsigned long *version)
+{
+    libxlDriverPrivatePtr driver = conn->privateData;
+
+    libxlDriverLock(driver);
+    *version = driver->version;
+    libxlDriverUnlock(driver);
+    return 0;
+}
+
+static int
+libxlGetMaxVcpus(virConnectPtr conn, const char *type ATTRIBUTE_UNUSED)
+{
+    int ret;
+    libxlDriverPrivatePtr driver = conn->privateData;
+
+    ret = libxl_get_max_cpus(&driver->ctx);
+    /* libxl_get_max_cpus() will return 0 if there were any failures,
+       e.g. xc_physinfo() failing */
+    if (ret == 0)
+        return -1;
+
+    return ret;
+}
+
+static int
+libxlNodeGetInfo(virConnectPtr conn, virNodeInfoPtr info)
+{
+    libxl_physinfo phy_info;
+    const libxl_version_info* ver_info;
+    libxlDriverPrivatePtr driver = conn->privateData;
+    struct utsname utsname;
+
+    if (libxl_get_physinfo(&driver->ctx, &phy_info)) {
+        libxlError(VIR_ERR_INTERNAL_ERROR,
+                   _("libxl_get_physinfo_info failed"));
+        return -1;
+    }
+
+    if ((ver_info = libxl_get_version_info(&driver->ctx)) == NULL) {
+        libxlError(VIR_ERR_INTERNAL_ERROR,
+                   _("libxl_get_version_info failed"));
+        return -1;
+    }
+
+    uname(&utsname);
+    if (virStrncpy(info->model,
+                   utsname.machine,
+                   strlen(utsname.machine),
+                   sizeof(info->model)) == NULL) {
+        libxlError(VIR_ERR_INTERNAL_ERROR,
+                   _("machine type %s too big for destination"),
+                   utsname.machine);
+        return -1;
+    }
+
+    info->memory = phy_info.total_pages * (ver_info->pagesize / 1024);
+    info->cpus = phy_info.nr_cpus;
+    info->nodes = phy_info.nr_nodes;
+    info->cores = phy_info.cores_per_socket;
+    info->threads = phy_info.threads_per_core;
+    info->sockets = 1;
+    info->mhz = phy_info.cpu_khz / 1000;
+    return 0;
+}
+
+static char *
+libxlGetCapabilities(virConnectPtr conn)
+{
+    libxlDriverPrivatePtr driver = conn->privateData;
+    char *xml;
+
+    libxlDriverLock(driver);
+    if ((xml = virCapabilitiesFormatXML(driver->caps)) == NULL)
+        virReportOOMError();
+    libxlDriverUnlock(driver);
+
+    return xml;
+}
+
+static int
+libxlListDomains(virConnectPtr conn, int *ids, int nids)
+{
+    libxlDriverPrivatePtr driver = conn->privateData;
+    int n;
+
+    libxlDriverLock(driver);
+    n = virDomainObjListGetActiveIDs(&driver->domains, ids, nids);
+    libxlDriverUnlock(driver);
+
+    return n;
+}
+
+static int
+libxlNumDomains(virConnectPtr conn)
+{
+    libxlDriverPrivatePtr driver = conn->privateData;
+    int n;
+
+    libxlDriverLock(driver);
+    n = virDomainObjListNumOfDomains(&driver->domains, 1);
+    libxlDriverUnlock(driver);
+
+    return n;
+}
+
+static virDomainPtr
+libxlDomainCreateXML(virConnectPtr conn, const char *xml,
+                     unsigned int flags)
+{
+    libxlDriverPrivatePtr driver = conn->privateData;
+    virDomainDefPtr def;
+    virDomainObjPtr vm = NULL;
+    virDomainPtr dom = NULL;
+
+    virCheckFlags(VIR_DOMAIN_START_PAUSED, NULL);
+
+    libxlDriverLock(driver);
+    if (!(def = virDomainDefParseString(driver->caps, xml,
+                                        VIR_DOMAIN_XML_INACTIVE)))
+        goto cleanup;
+
+    if (virDomainObjIsDuplicate(&driver->domains, def, 1) < 0)
+        goto cleanup;
+
+    if (!(vm = virDomainAssignDef(driver->caps,
+                                  &driver->domains, def, false)))
+        goto cleanup;
+    def = NULL;
+
+    if (libxlVmStart(vm, (flags & VIR_DOMAIN_START_PAUSED) != 0) < 0) {
+        virDomainRemoveInactive(&driver->domains, vm);
+        vm = NULL;
+        goto cleanup;
+    }
+
+    dom = virGetDomain(conn, vm->def->name, vm->def->uuid);
+    if (dom)
+        dom->id = vm->def->id;
+
+cleanup:
+    virDomainDefFree(def);
+    if (vm)
+        virDomainObjUnlock(vm);
+    libxlDriverUnlock(driver);
+    return dom;
+}
+
+static virDomainPtr
+libxlDomainLookupByID(virConnectPtr conn, int id)
+{
+    libxlDriverPrivatePtr driver = conn->privateData;
+    virDomainObjPtr vm;
+    virDomainPtr dom = NULL;
+
+    libxlDriverLock(driver);
+    vm = virDomainFindByID(&driver->domains, id);
+    libxlDriverUnlock(driver);
+
+    if (!vm) {
+        libxlError(VIR_ERR_NO_DOMAIN, NULL);
+        goto cleanup;
+    }
+
+    dom = virGetDomain(conn, vm->def->name, vm->def->uuid);
+    if (dom)
+        dom->id = vm->def->id;
+
+  cleanup:
+    if (vm)
+        virDomainObjUnlock(vm);
+    return dom;
+}
+
+static virDomainPtr
+libxlDomainLookupByUUID(virConnectPtr conn, const unsigned char *uuid)
+{
+    libxlDriverPrivatePtr driver = conn->privateData;
+    virDomainObjPtr vm;
+    virDomainPtr dom = NULL;
+
+    libxlDriverLock(driver);
+    vm = virDomainFindByUUID(&driver->domains, uuid);
+    libxlDriverUnlock(driver);
+
+    if (!vm) {
+        libxlError(VIR_ERR_NO_DOMAIN, NULL);
+        goto cleanup;
+    }
+
+    dom = virGetDomain(conn, vm->def->name, vm->def->uuid);
+    if (dom)
+        dom->id = vm->def->id;
+
+  cleanup:
+    if (vm)
+        virDomainObjUnlock(vm);
+    return dom;
+}
+
+static virDomainPtr
+libxlDomainLookupByName(virConnectPtr conn, const char *name)
+{
+    libxlDriverPrivatePtr driver = conn->privateData;
+    virDomainObjPtr vm;
+    virDomainPtr dom = NULL;
+
+    libxlDriverLock(driver);
+    vm = virDomainFindByName(&driver->domains, name);
+    libxlDriverUnlock(driver);
+
+    if (!vm) {
+        libxlError(VIR_ERR_NO_DOMAIN, NULL);
+        goto cleanup;
+    }
+
+    dom = virGetDomain(conn, vm->def->name, vm->def->uuid);
+    if (dom)
+        dom->id = vm->def->id;
+
+  cleanup:
+    if (vm)
+        virDomainObjUnlock(vm);
+    return dom;
+}
+
+static int
+libxlDomainShutdown(virDomainPtr dom)
+{
+    libxlDriverPrivatePtr driver = dom->conn->privateData;
+    virDomainObjPtr vm;
+    int ret = -1;
+    libxlDomainObjPrivatePtr priv;
+
+    libxlDriverLock(driver);
+    vm = virDomainFindByUUID(&driver->domains, dom->uuid);
+    if (!vm) {
+        char uuidstr[VIR_UUID_STRING_BUFLEN];
+        virUUIDFormat(dom->uuid, uuidstr);
+        libxlError(VIR_ERR_NO_DOMAIN,
+                   _("No domain with matching uuid '%s'"), uuidstr);
+        goto cleanup;
+    }
+
+    if (!virDomainObjIsActive(vm)) {
+        libxlError(VIR_ERR_OPERATION_INVALID,
+                   "%s", _("Domain is not running"));
+        goto cleanup;
+    }
+
+    priv = vm->privateData;
+    if (libxl_domain_shutdown(&priv->ctx, dom->id, LIBXL_DOM_REQ_POWEROFF) != 0) {
+        libxlError(VIR_ERR_INTERNAL_ERROR,
+                   _("Failed to shutdown domain '%d' with libxenlight"),
+                   dom->id);
+        goto cleanup;
+    }
+
+    /* vm is marked shutoff (or removed from domains list if not persistent)
+     * in shutdown event handler.
+     */
+    ret = 0;
+
+cleanup:
+    if (vm)
+        virDomainObjUnlock(vm);
+    libxlDriverUnlock(driver);
+    return ret;
+}
+
+static int
+libxlDomainReboot(virDomainPtr dom, unsigned int flags ATTRIBUTE_UNUSED)
+{
+    libxlDriverPrivatePtr driver = dom->conn->privateData;
+    virDomainObjPtr vm;
+    int ret = -1;
+    libxlDomainObjPrivatePtr priv;
+
+    libxlDriverLock(driver);
+    vm = virDomainFindByUUID(&driver->domains, dom->uuid);
+    if (!vm) {
+        char uuidstr[VIR_UUID_STRING_BUFLEN];
+        virUUIDFormat(dom->uuid, uuidstr);
+        libxlError(VIR_ERR_NO_DOMAIN,
+                   _("No domain with matching uuid '%s'"), uuidstr);
+        goto cleanup;
+    }
+
+    if (!virDomainObjIsActive(vm)) {
+        libxlError(VIR_ERR_OPERATION_INVALID,
+                   "%s", _("Domain is not running"));
+        goto cleanup;
+    }
+
+    priv = vm->privateData;
+    if (libxl_domain_shutdown(&priv->ctx, dom->id, LIBXL_DOM_REQ_REBOOT) != 0) {
+        libxlError(VIR_ERR_INTERNAL_ERROR,
+                   _("Failed to reboot domain '%d' with libxenlight"),
+                   dom->id);
+        goto cleanup;
+    }
+    ret = 0;
+
+cleanup:
+    if (vm)
+        virDomainObjUnlock(vm);
+    libxlDriverUnlock(driver);
+    return ret;
+}
+
+static int
+libxlDomainDestroy(virDomainPtr dom)
+{
+    libxlDriverPrivatePtr driver = dom->conn->privateData;
+    virDomainObjPtr vm;
+    int ret = -1;
+    libxlDomainObjPrivatePtr priv;
+
+    libxlDriverLock(driver);
+    vm = virDomainFindByUUID(&driver->domains, dom->uuid);
+    if (!vm) {
+        char uuidstr[VIR_UUID_STRING_BUFLEN];
+        virUUIDFormat(dom->uuid, uuidstr);
+        libxlError(VIR_ERR_NO_DOMAIN,
+                   _("No domain with matching uuid '%s'"), uuidstr);
+        goto cleanup;
+    }
+
+    if (!virDomainObjIsActive(vm)) {
+        libxlError(VIR_ERR_OPERATION_INVALID,
+                   "%s", _("Domain is not running"));
+        goto cleanup;
+    }
+
+    priv = vm->privateData;
+    if (libxl_domain_destroy(&priv->ctx, dom->id, 1) != 0) {
+        libxlError(VIR_ERR_INTERNAL_ERROR,
+                   _("Failed to destroy domain '%d' with libxenlight"),
+                   dom->id);
+        goto cleanup;
+    }
+
+    /* Direct kill of domain wont be handled in event callback.
+     * Cleanup here. */
+    if (vm->persistent) {
+        vm->def->id = -1;
+        vm->state = VIR_DOMAIN_SHUTOFF;
+    } else {
+        libxl_free_waiter(priv->dWaiter);
+        VIR_FREE(priv->dWaiter);
+        virDomainRemoveInactive(&driver->domains, vm);
+        vm = NULL;
+    }
+
+    ret = 0;
+
+cleanup:
+    if (vm)
+        virDomainObjUnlock(vm);
+    libxlDriverUnlock(driver);
+    return ret;
+}
+
+static int
+libxlDomainGetInfo(virDomainPtr dom, virDomainInfoPtr info)
+{
+    libxlDriverPrivatePtr driver = dom->conn->privateData;
+    virDomainObjPtr vm;
+    int ret = -1;
+
+    libxlDriverLock(driver);
+    vm = virDomainFindByUUID(&driver->domains, dom->uuid);
+    libxlDriverUnlock(driver);
+
+    if (!vm) {
+        libxlError(VIR_ERR_NO_DOMAIN, "%s",
+                   _("no domain with matching uuid"));
+        goto cleanup;
+    }
+
+    info->state = vm->state;
+    info->cpuTime = 0;
+    info->maxMem = vm->def->mem.max_balloon;
+    info->memory = vm->def->mem.cur_balloon;
+    info->nrVirtCpu = vm->def->vcpus;
+    ret = 0;
+
+  cleanup:
+    if (vm)
+        virDomainObjUnlock(vm);
+    return ret;
+}
+
+static char *
+libxlDomainDumpXML(virDomainPtr dom, int flags)
+{
+    libxlDriverPrivatePtr driver = dom->conn->privateData;
+    virDomainObjPtr vm;
+    char *ret = NULL;
+
+    libxlDriverLock(driver);
+    vm = virDomainFindByUUID(&driver->domains, dom->uuid);
+    libxlDriverUnlock(driver);
+
+    if (!vm) {
+        libxlError(VIR_ERR_NO_DOMAIN, "%s",
+                   _("no domain with matching uuid"));
+        goto cleanup;
+    }
+
+    ret = virDomainDefFormat(vm->def, flags);
+
+  cleanup:
+    if (vm)
+        virDomainObjUnlock(vm);
+    return ret;
+}
+
+static int
+libxlListDefinedDomains(virConnectPtr conn,
+                        char **const names, int nnames)
+{
+    libxlDriverPrivatePtr driver = conn->privateData;
+    int n;
+
+    libxlDriverLock(driver);
+    n = virDomainObjListGetInactiveNames(&driver->domains, names, nnames);
+    libxlDriverUnlock(driver);
+    return n;
+}
+
+static int
+libxlNumDefinedDomains(virConnectPtr conn)
+{
+    libxlDriverPrivatePtr driver = conn->privateData;
+    int n;
+
+    libxlDriverLock(driver);
+    n = virDomainObjListNumOfDomains(&driver->domains, 0);
+    libxlDriverUnlock(driver);
+
+    return n;
+}
+
+static int
+libxlDomainCreateWithFlags(virDomainPtr dom,
+                           unsigned int flags ATTRIBUTE_UNUSED)
+{
+    libxlDriverPrivatePtr driver = dom->conn->privateData;
+    virDomainObjPtr vm;
+    int ret = -1;
+
+    virCheckFlags(VIR_DOMAIN_START_PAUSED, -1);
+
+    libxlDriverLock(driver);
+    vm = virDomainFindByUUID(&driver->domains, dom->uuid);
+    if (!vm) {
+        char uuidstr[VIR_UUID_STRING_BUFLEN];
+        virUUIDFormat(dom->uuid, uuidstr);
+        libxlError(VIR_ERR_NO_DOMAIN,
+                   _("No domain with matching uuid '%s'"), uuidstr);
+        goto cleanup;
+    }
+
+    if (virDomainObjIsActive(vm)) {
+        libxlError(VIR_ERR_OPERATION_INVALID,
+                   "%s", _("Domain is already running"));
+        goto cleanup;
+    }
+
+    ret = libxlVmStart(vm, (flags & VIR_DOMAIN_START_PAUSED) != 0);
+
+cleanup:
+    if (vm)
+        virDomainObjUnlock(vm);
+    libxlDriverUnlock(driver);
+    return ret;
+}
+
+static int
+libxlDomainCreate(virDomainPtr dom)
+{
+    return libxlDomainCreateWithFlags(dom, 0);
+}
+
+static virDomainPtr
+libxlDomainDefineXML(virConnectPtr conn, const char *xml)
+{
+    libxlDriverPrivatePtr driver = conn->privateData;
+    virDomainDefPtr def = NULL;
+    virDomainObjPtr vm = NULL;
+    virDomainPtr dom = NULL;
+    int dupVM;
+
+    libxlDriverLock(driver);
+    if (!(def = virDomainDefParseString(driver->caps, xml,
+                                        VIR_DOMAIN_XML_INACTIVE)))
+        goto cleanup;
+
+   if ((dupVM = virDomainObjIsDuplicate(&driver->domains, def, 0)) < 0)
+        goto cleanup;
+
+    if (!(vm = virDomainAssignDef(driver->caps,
+                                  &driver->domains, def, false)))
+        goto cleanup;
+    def = NULL;
+    vm->persistent = 1;
+
+    if (virDomainSaveConfig(driver->configDir,
+                            vm->newDef ? vm->newDef : vm->def) < 0) {
+        virDomainRemoveInactive(&driver->domains, vm);
+        vm = NULL;
+        goto cleanup;
+    }
+
+    dom = virGetDomain(conn, vm->def->name, vm->def->uuid);
+    if (dom)
+        dom->id = vm->def->id;
+
+cleanup:
+    virDomainDefFree(def);
+    if (vm)
+        virDomainObjUnlock(vm);
+    libxlDriverUnlock(driver);
+    return dom;
+}
+
+static int
+libxlDomainUndefine(virDomainPtr dom)
+{
+    libxlDriverPrivatePtr driver = dom->conn->privateData;
+    virDomainObjPtr vm;
+    int ret = -1;
+
+    libxlDriverLock(driver);
+    vm = virDomainFindByUUID(&driver->domains, dom->uuid);
+
+    if (!vm) {
+        char uuidstr[VIR_UUID_STRING_BUFLEN];
+
+        virUUIDFormat(dom->uuid, uuidstr);
+        libxlError(VIR_ERR_NO_DOMAIN,
+                   _("no domain with matching uuid '%s'"), uuidstr);
+        goto cleanup;
+    }
+
+    if (virDomainObjIsActive(vm)) {
+        libxlError(VIR_ERR_OPERATION_INVALID,
+                   "%s", _("cannot undefine active domain"));
+        goto cleanup;
+    }
+
+    if (!vm->persistent) {
+        libxlError(VIR_ERR_OPERATION_INVALID,
+                   "%s", _("cannot undefine transient domain"));
+        goto cleanup;
+    }
+
+    if (virDomainDeleteConfig(driver->configDir,
+                              driver->autostartDir,
+                              vm) < 0)
+        goto cleanup;
+
+    virDomainRemoveInactive(&driver->domains, vm);
+    vm = NULL;
+    ret = 0;
+
+  cleanup:
+    if (vm)
+        virDomainObjUnlock(vm);
+    libxlDriverUnlock(driver);
+    return ret;
+}
+
+static int
+libxlDomainIsActive(virDomainPtr dom)
+{
+    libxlDriverPrivatePtr driver = dom->conn->privateData;
+    virDomainObjPtr obj;
+    int ret = -1;
+
+    libxlDriverLock(driver);
+    obj = virDomainFindByUUID(&driver->domains, dom->uuid);
+    libxlDriverUnlock(driver);
+    if (!obj) {
+        libxlError(VIR_ERR_NO_DOMAIN, NULL);
+        goto cleanup;
+    }
+    ret = virDomainObjIsActive(obj);
+
+  cleanup:
+    if (obj)
+        virDomainObjUnlock(obj);
+    return ret;
+}
+
+static int
+libxlDomainIsPersistent(virDomainPtr dom)
+{
+    libxlDriverPrivatePtr driver = dom->conn->privateData;
+    virDomainObjPtr obj;
+    int ret = -1;
+
+    libxlDriverLock(driver);
+    obj = virDomainFindByUUID(&driver->domains, dom->uuid);
+    libxlDriverUnlock(driver);
+    if (!obj) {
+        libxlError(VIR_ERR_NO_DOMAIN, NULL);
+        goto cleanup;
+    }
+    ret = obj->persistent;
+
+  cleanup:
+    if (obj)
+        virDomainObjUnlock(obj);
+    return ret;
+}
+
+
+static virDriver libxlDriver = {
+    VIR_DRV_LIBXL,
+    "libxenlight",
+    libxlOpen,                  /* open */
+    libxlClose,                 /* close */
+    NULL,                       /* supports_feature */
+    libxlGetType,               /* type */
+    libxlGetVersion,            /* version */
+    NULL,                       /* libvirtVersion (impl. in libvirt.c) */
+    virGetHostname,             /* getHostname */
+    NULL,                       /* getSysinfo */
+    libxlGetMaxVcpus,           /* getMaxVcpus */
+    libxlNodeGetInfo,           /* nodeGetInfo */
+    libxlGetCapabilities,       /* getCapabilities */
+    libxlListDomains,           /* listDomains */
+    libxlNumDomains,            /* numOfDomains */
+    libxlDomainCreateXML,       /* domainCreateXML */
+    libxlDomainLookupByID,      /* domainLookupByID */
+    libxlDomainLookupByUUID,    /* domainLookupByUUID */
+    libxlDomainLookupByName,    /* domainLookupByName */
+    NULL,                       /* domainSuspend */
+    NULL,                       /* domainResume */
+    libxlDomainShutdown,        /* domainShutdown */
+    libxlDomainReboot,          /* domainReboot */
+    libxlDomainDestroy,         /* domainDestroy */
+    NULL,                       /* domainGetOSType */
+    NULL,                       /* domainGetMaxMemory */
+    NULL,                       /* domainSetMaxMemory */
+    NULL,                       /* domainSetMemory */
+    libxlDomainGetInfo,         /* domainGetInfo */
+    NULL,                       /* domainSave */
+    NULL,                       /* domainRestore */
+    NULL,                       /* domainCoreDump */
+    NULL,                       /* domainSetVcpus */
+    NULL,                       /* domainSetVcpusFlags */
+    NULL,                       /* domainGetVcpusFlags */
+    NULL,                       /* domainPinVcpu */
+    NULL,                       /* domainGetVcpus */
+    NULL,                       /* domainGetMaxVcpus */
+    NULL,                       /* domainGetSecurityLabel */
+    NULL,                       /* nodeGetSecurityModel */
+    libxlDomainDumpXML,         /* domainDumpXML */
+    NULL,                       /* domainXmlFromNative */
+    NULL,                       /* domainXmlToNative */
+    libxlListDefinedDomains,    /* listDefinedDomains */
+    libxlNumDefinedDomains,     /* numOfDefinedDomains */
+    libxlDomainCreate,          /* domainCreate */
+    libxlDomainCreateWithFlags, /* domainCreateWithFlags */
+    libxlDomainDefineXML,       /* domainDefineXML */
+    libxlDomainUndefine,        /* domainUndefine */
+    NULL,                       /* domainAttachDevice */
+    NULL,                       /* domainAttachDeviceFlags */
+    NULL,                       /* domainDetachDevice */
+    NULL,                       /* domainDetachDeviceFlags */
+    NULL,                       /* domainUpdateDeviceFlags */
+    NULL,                       /* domainGetAutostart */
+    NULL,                       /* domainSetAutostart */
+    NULL,                       /* domainGetSchedulerType */
+    NULL,                       /* domainGetSchedulerParameters */
+    NULL,                       /* domainSetSchedulerParameters */
+    NULL,                       /* domainMigratePrepare */
+    NULL,                       /* domainMigratePerform */
+    NULL,                       /* domainMigrateFinish */
+    NULL,                       /* domainBlockStats */
+    NULL,                       /* domainInterfaceStats */
+    NULL,                       /* domainMemoryStats */
+    NULL,                       /* domainBlockPeek */
+    NULL,                       /* domainMemoryPeek */
+    NULL,                       /* domainGetBlockInfo */
+    NULL,                       /* nodeGetCellsFreeMemory */
+    NULL,                       /* getFreeMemory */
+    NULL,                       /* domainEventRegister */
+    NULL,                       /* domainEventDeregister */
+    NULL,                       /* domainMigratePrepare2 */
+    NULL,                       /* domainMigrateFinish2 */
+    NULL,                       /* nodeDeviceDettach */
+    NULL,                       /* nodeDeviceReAttach */
+    NULL,                       /* nodeDeviceReset */
+    NULL,                       /* domainMigratePrepareTunnel */
+    NULL,                       /* IsEncrypted */
+    NULL,                       /* IsSecure */
+    libxlDomainIsActive,        /* DomainIsActive */
+    libxlDomainIsPersistent,    /* DomainIsPersistent */
+    NULL,                       /* domainIsUpdated */
+    NULL,                       /* cpuCompare */
+    NULL,                       /* cpuBaseline */
+    NULL,                       /* domainGetJobInfo */
+    NULL,                       /* domainAbortJob */
+    NULL,                       /* domainMigrateSetMaxDowntime */
+    NULL,                       /* domainEventRegisterAny */
+    NULL,                       /* domainEventDeregisterAny */
+    NULL,                       /* domainManagedSave */
+    NULL,                       /* domainHasManagedSaveImage */
+    NULL,                       /* domainManagedSaveRemove */
+    NULL,                       /* domainSnapshotCreateXML */
+    NULL,                       /* domainSnapshotDumpXML */
+    NULL,                       /* domainSnapshotNum */
+    NULL,                       /* domainSnapshotListNames */
+    NULL,                       /* domainSnapshotLookupByName */
+    NULL,                       /* domainHasCurrentSnapshot */
+    NULL,                       /* domainSnapshotCurrent */
+    NULL,                       /* domainRevertToSnapshot */
+    NULL,                       /* domainSnapshotDelete */
+    NULL,                       /* qemuDomainMonitorCommand */
+    NULL,                       /* domainSetMemoryParameters */
+    NULL,                       /* domainGetMemoryParameters */
+    NULL,                       /* domainOpenConsole */
+};
+
+static virStateDriver libxlStateDriver = {
+    .name = "LIBXL",
+    .initialize = libxlStartup,
+    .cleanup = libxlShutdown,
+    .reload = libxlReload,
+    .active = libxlActive,
+};
+
+
+int
+libxlRegister(void)
+{
+    if (virRegisterDriver(&libxlDriver) < 0)
+        return -1;
+    if (virRegisterStateDriver(&libxlStateDriver) < 0)
+        return -1;
+
+    return 0;
+}
diff --git a/src/libxl/libxl_driver.h b/src/libxl/libxl_driver.h
new file mode 100644
index 0000000..e047552
--- /dev/null
+++ b/src/libxl/libxl_driver.h
@@ -0,0 +1,27 @@
+/*---------------------------------------------------------------------------*/
+/*  Copyright (c) 2011 SUSE LINUX Products GmbH, Nuernberg, Germany.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
+ */
+/*---------------------------------------------------------------------------*/
+
+#ifndef LIBXL_DRIVER_H
+# define LIBXL_DRIVER_H
+
+# include <config.h>
+
+int libxlRegister(void);
+
+#endif /* LIBXL_DRIVER_H */
diff --git a/src/util/virterror.c b/src/util/virterror.c
index e45b582..c763d92 100644
--- a/src/util/virterror.c
+++ b/src/util/virterror.c
@@ -89,6 +89,9 @@ static const char *virErrorDomainName(virErrorDomain domain) {
         case VIR_FROM_XENAPI:
             dom = "XenAPI ";
             break;
+        case VIR_FROM_LIBXL:
+            dom = "libxenlight ";
+            break;
         case VIR_FROM_XML:
             dom = "XML ";
             break;
-- 
1.7.3.1


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