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[libvirt] [PATCH 07/12] qemu: block: Add JSON props generator for NBD storage backing



---
 src/qemu/qemu_block.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/src/qemu/qemu_block.c b/src/qemu/qemu_block.c
index 4e588c724..451d04694 100644
--- a/src/qemu/qemu_block.c
+++ b/src/qemu/qemu_block.c
@@ -767,6 +767,34 @@ qemuBlockStorageSourceGetISCSIProps(virStorageSourcePtr src)
 }


+static virJSONValuePtr
+qemuBlockStorageSourceGetNBDProps(virStorageSourcePtr src)
+{
+    virJSONValuePtr serverprops;
+    virJSONValuePtr ret = NULL;
+
+    if (src->nhosts != 1) {
+        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                       _("nbd protocol accepts only one host"));
+        return NULL;
+    }
+
+    serverprops = qemuBlockStorageSourceBuildJSONSocketAddress(&src->hosts[0],
+                                                               false);
+    if (!serverprops)
+        return NULL;
+
+    ignore_value(virJSONValueObjectCreate(&ret,
+                                          "s:driver", "nbd",
+                                          "a:server", serverprops,
+                                          "S:export", src->path,
+                                          "S:tls-creds", src->tlsAlias,
+                                          NULL));
+
+    return ret;
+}
+
+
 /**
  * qemuBlockStorageSourceGetBackendProps:
  * @src: disk source
@@ -822,6 +850,10 @@ qemuBlockStorageSourceGetBackendProps(virStorageSourcePtr src)
             break;

         case VIR_STORAGE_NET_PROTOCOL_NBD:
+            if (!(fileprops = qemuBlockStorageSourceGetNBDProps(src)))
+                return NULL;
+            break;
+
         case VIR_STORAGE_NET_PROTOCOL_RBD:
         case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
         case VIR_STORAGE_NET_PROTOCOL_SSH:
-- 
2.14.3


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