[Xen-devel] [PATCH 3/3] libxl: colo: only build COLO on Linux

[Wei Liu <wei.liu2@xxxxxxxxxx>]

Linux's netlink is required when initialising COLO, so make sure only to
compile COLO on Linux.

Provide necessary stub functions in case COLO is disabled. This should
fix libxl build on FreeBSD.

Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 tools/libxl/Makefile        |  5 ++++
 tools/libxl/libxl_no_colo.c | 62 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 67 insertions(+)
 create mode 100644 tools/libxl/libxl_no_colo.c

diff --git a/tools/libxl/Makefile b/tools/libxl/Makefile
index a433aaa..47564b3 100644
--- a/tools/libxl/Makefile
+++ b/tools/libxl/Makefile
@@ -65,10 +65,15 @@ LIBXL_OBJS-y += libxl_no_convert_callout.o
 endif
 
 LIBXL_OBJS-y += libxl_remus.o libxl_checkpoint_device.o libxl_remus_disk_drbd.o
+
+ifeq ($(CONFIG_Linux),y)
 LIBXL_OBJS-y += libxl_colo_restore.o libxl_colo_save.o
 LIBXL_OBJS-y += libxl_colo_qdisk.o
 LIBXL_OBJS-y += libxl_colo_proxy.o
 LIBXL_OBJS-y += libxl_colo_nic.o
+else
+LIBXL_OBJS-y += libxl_no_colo.o
+endif
 
 LIBXL_OBJS-$(CONFIG_X86) += libxl_cpuid.o libxl_x86.o libxl_psr.o
 LIBXL_OBJS-$(CONFIG_ARM) += libxl_nocpuid.o libxl_arm.o libxl_libfdt_compat.o
diff --git a/tools/libxl/libxl_no_colo.c b/tools/libxl/libxl_no_colo.c
new file mode 100644
index 0000000..152f198
--- /dev/null
+++ b/tools/libxl/libxl_no_colo.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2016
+ * Author Wei Liu <wei.liu2@xxxxxxxxxx>
+ *
+ * This program 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; version 2.1 only. with the special
+ * exception on linking described in file LICENSE.
+ *
+ * This program 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.
+ */
+
+#include "libxl_osdeps.h" /* must come before any other headers */
+
+#include "libxl_internal.h"
+
+void libxl__colo_restore_setup(libxl__egc *egc,
+                               libxl__colo_restore_state *crs)
+{
+    STATE_AO_GC(crs->ao);
+
+    LOG(ERROR, "COLO is not supported");
+
+    crs->callback(egc, crs, ERROR_FAIL);
+}
+
+void libxl__colo_restore_teardown(libxl__egc *egc, void *dcs_void,
+                                  int ret, int retval, int errnoval)
+{
+    /* Shouldn't be here because setup already failed */
+    abort();
+}
+
+void libxl__colo_save_setup(libxl__egc *egc, libxl__colo_save_state *css)
+{
+    libxl__domain_save_state *dss = CONTAINER_OF(css, *dss, css);
+    STATE_AO_GC(dss->ao);
+
+    LOG(ERROR, "COLO is not supported");
+
+    dss->callback(egc, dss, ERROR_FAIL);
+}
+
+void libxl__colo_save_teardown(libxl__egc *egc,
+                               libxl__colo_save_state *css,
+                               int rc)
+{
+    /* Shouldn't be here because setup already failed */
+    abort();
+}
+
+
+/*
+ * Local variables:
+ * mode: C
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.1.4


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