[libvirt] [PATCH v3 3/4] conf: report errors when parsing video acceleration

[Jonathon Jongsma]

Since this function is now only called when an 'acceleration' element is
present in the xml, any failure to parse the element will be considered
an error.

Previously, we detected some types of errors, but we would only log an
error (virReportError()), but still return a partially-specified accel
object to the caller. This patch returns NULL for all parsing errors and
reports that error back up to the caller.

Signed-off-by: Jonathon Jongsma <jjongsma at redhat.com>
---
 src/conf/domain_conf.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index b0599c7318..c0f20c928f 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -15269,8 +15269,11 @@ virDomainVideoAccelDefParseXML(xmlNodePtr node)
     accel2d = virXMLPropString(node, "accel2d");
     rendernode = virXMLPropString(node, "rendernode");
 
-    if (!accel3d && !accel2d && !rendernode)
+    if (!accel3d && !accel2d && !rendernode) {
+        virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                       _("missing values for acceleration"));
         return NULL;
+    }
 
     def = g_new0(virDomainVideoAccelDef, 1);
 
@@ -15278,7 +15281,7 @@ virDomainVideoAccelDefParseXML(xmlNodePtr node)
         if ((val = virTristateBoolTypeFromString(accel3d)) <= 0) {
             virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                            _("unknown accel3d value '%s'"), accel3d);
-            goto cleanup;
+            return NULL;
         }
         def->accel3d = val;
     }
@@ -15287,7 +15290,7 @@ virDomainVideoAccelDefParseXML(xmlNodePtr node)
         if ((val = virTristateBoolTypeFromString(accel2d)) <= 0) {
             virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                            _("unknown accel2d value '%s'"), accel2d);
-            goto cleanup;
+            return NULL;
         }
         def->accel2d = val;
     }
@@ -15295,7 +15298,6 @@ virDomainVideoAccelDefParseXML(xmlNodePtr node)
     if (rendernode)
         def->rendernode = virFileSanitizePath(rendernode);
 
- cleanup:
     return g_steal_pointer(&def);
 }
 
@@ -15414,8 +15416,10 @@ virDomainVideoDefParseXML(virDomainXMLOptionPtr xmlopt,
                 while (child != NULL) {
                     if (child->type == XML_ELEMENT_NODE) {
                         if (def->accel == NULL &&
-                            virXMLNodeNameEqual(child, "acceleration"))
-                            def->accel = virDomainVideoAccelDefParseXML(child);
+                            virXMLNodeNameEqual(child, "acceleration")) {
+                            if ((def->accel = virDomainVideoAccelDefParseXML(child)) == NULL)
+                                goto error;
+                        }
                         if (def->res == NULL &&
                             virXMLNodeNameEqual(child, "resolution")) {
                             if ((def->res = virDomainVideoResolutionDefParseXML(child)) == NULL)
-- 
2.21.0