0003-libxl-FreeBSD-write-blkback-path-node.patch

From 98859ffa6a197e4ef394f9fde1bd41aeaeb023c9 Mon Sep 17 00:00:00 2001
From: Roger Pau Monne <roger.pau@citrix.com>
Date: Thu, 21 May 2015 16:10:26 +0200
Subject: [PATCH RFC 3/5] libxl/FreeBSD: write blkback "path" node
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FreeBSD blkback doesn't use the physical-device xenstore node because it
can handle both block devices and raw files directly. Instead introduce a
new xenstore blkback node that is used by hotplug scripts to write the path
to the block device or raw image.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Cc: Ian Jackson <ian.jackson@eu.citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>
---
 tools/libxl/libxl.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index 63210b6..b9e3501 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -2474,7 +2474,13 @@ static void device_disk_add(libxl__egc *egc, uint32_t domid,
                     libxl__device_physdisk_major_minor(dev, &major, &minor);
                     flexarray_append_pair(back, "physical-device",
                             libxl__sprintf(gc, "%x:%x", major, minor));
-#endif /* __linux__ || __NetBSD__ */
+#elif defined(__FreeBSD__)
+                    /*
+                     * FreeBSD blkback supports raw image files, so we
+                     * cannot reuse the physical-device node.
+                     */
+                    flexarray_append_pair(back, "path", dev);
+#endif
                 }

                 assert(device->backend_kind == LIBXL__DEVICE_KIND_VBD);