virStorageSourceParseBackingJSON: Move deflattening of json: URIs out of recursion

Originally virStorageSourceParseBackingJSON didn't recurse, but when
the 'raw' driver support was added we need to parse it's information
which contains nested 'file' object.

Since the deflattening helper recurses already there's no need to call
it again. Move it one level up to the entry point.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>

diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
index bdf82b04bb0c3d745e4a2bdc1b02c80035025d96..fd0069a4fa4ed7b41c612f41a534782bc57363d5 100644 (file)
--- a/src/util/virstoragefile.c
+++ b/src/util/virstoragefile.c
@@ -3600,15 +3600,11 @@ virStorageSourceParseBackingJSONInternal(virStorageSourcePtr src,
                                          virJSONValuePtr json,
                                          const char *jsonstr)
 {
-    g_autoptr(virJSONValue) deflattened = NULL;
     virJSONValuePtr file;
     const char *drvname;
     size_t i;
 
-    if (!(deflattened = virJSONValueObjectDeflatten(json)))
-        return -1;
-
-    if (!(file = virJSONValueObjectGetObject(deflattened, "file"))) {
+    if (!(file = virJSONValueObjectGetObject(json, "file"))) {
         virReportError(VIR_ERR_INVALID_ARG,
                        _("JSON backing volume definition '%s' lacks 'file' object"),
                        jsonstr);
@@ -3639,11 +3635,15 @@ virStorageSourceParseBackingJSON(virStorageSourcePtr src,
                                  const char *json)
 {
     g_autoptr(virJSONValue) root = NULL;
+    g_autoptr(virJSONValue) deflattened = NULL;
 
     if (!(root = virJSONValueFromString(json)))
         return -1;
 
-    return virStorageSourceParseBackingJSONInternal(src, root, json);
+    if (!(deflattened = virJSONValueObjectDeflatten(root)))
+        return -1;
+
+    return virStorageSourceParseBackingJSONInternal(src, deflattened, json);
 }