conf: Use automatic pointers for xmlXPathContext

Clean up functions which grab and free the context to use VIR_AUTOPTR.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>

src/conf/checkpoint_conf.c

@@ -209,13 +209,12 @@ virDomainCheckpointDefParseNode(xmlDocPtr xml,
                                 void *parseOpaque,
                                 unsigned int flags)
 {
-    xmlXPathContextPtr ctxt = NULL;
+    VIR_AUTOPTR(xmlXPathContext) ctxt = NULL;
-    virDomainCheckpointDefPtr def = NULL;
     VIR_AUTOFREE(char *) schema = NULL;
 
     if (!virXMLNodeNameEqual(root, "domaincheckpoint")) {
         virReportError(VIR_ERR_XML_ERROR, "%s", _("domaincheckpoint"));
-        goto cleanup;
+        return NULL;
     }
 
     /* This is a new enough API to make schema validation unconditional */
@@ -228,13 +227,10 @@ virDomainCheckpointDefParseNode(xmlDocPtr xml,
         return NULL;
 
     if (!(ctxt = virXMLXPathContextNew(xml)))
-        goto cleanup;
+        return NULL;
 
     ctxt->node = root;
-    def = virDomainCheckpointDefParse(ctxt, caps, xmlopt, parseOpaque, flags);
+    return virDomainCheckpointDefParse(ctxt, caps, xmlopt, parseOpaque, flags);
- cleanup:
-    xmlXPathFreeContext(ctxt);
-    return def;
 }
 
 virDomainCheckpointDefPtr

src/conf/domain_conf.c

@@ -21600,26 +21600,21 @@ virDomainObjParseNode(xmlDocPtr xml,
                       virDomainXMLOptionPtr xmlopt,
                       unsigned int flags)
 {
-    xmlXPathContextPtr ctxt = NULL;
+    VIR_AUTOPTR(xmlXPathContext) ctxt = NULL;
-    virDomainObjPtr obj = NULL;
 
     if (!virXMLNodeNameEqual(root, "domstatus")) {
         virReportError(VIR_ERR_XML_ERROR,
                        _("unexpected root element <%s>, "
                          "expecting <domstatus>"),
                        root->name);
-        goto cleanup;
+        return NULL;
     }
 
     if (!(ctxt = virXMLXPathContextNew(xml)))
-        goto cleanup;
+        return NULL;
 
     ctxt->node = root;
-    obj = virDomainObjParseXML(xml, ctxt, caps, xmlopt, flags);
+    return virDomainObjParseXML(xml, ctxt, caps, xmlopt, flags);
-
- cleanup:
-    xmlXPathFreeContext(ctxt);
-    return obj;
 }
 
 

src/conf/interface_conf.c

@@ -819,8 +819,7 @@ virInterfaceDefPtr
 virInterfaceDefParseNode(xmlDocPtr xml,
                          xmlNodePtr root)
 {
-    xmlXPathContextPtr ctxt = NULL;
+    VIR_AUTOPTR(xmlXPathContext) ctxt = NULL;
-    virInterfaceDefPtr def = NULL;
 
     if (!virXMLNodeNameEqual(root, "interface")) {
         virReportError(VIR_ERR_XML_ERROR,
@@ -831,14 +830,10 @@ virInterfaceDefParseNode(xmlDocPtr xml,
     }
 
     if (!(ctxt = virXMLXPathContextNew(xml)))
-        goto cleanup;
+        return NULL;
 
     ctxt->node = root;
-    def = virInterfaceDefParseXML(ctxt, VIR_INTERFACE_TYPE_LAST);
+    return virInterfaceDefParseXML(ctxt, VIR_INTERFACE_TYPE_LAST);
-
- cleanup:
-    xmlXPathFreeContext(ctxt);
-    return def;
 }
 
 

src/conf/network_conf.c

@@ -2114,8 +2114,7 @@ virNetworkDefParseNode(xmlDocPtr xml,
                        xmlNodePtr root,
                        virNetworkXMLOptionPtr xmlopt)
 {
-    xmlXPathContextPtr ctxt = NULL;
+    VIR_AUTOPTR(xmlXPathContext) ctxt = NULL;
-    virNetworkDefPtr def = NULL;
 
     if (!virXMLNodeNameEqual(root, "network")) {
         virReportError(VIR_ERR_XML_ERROR,
@@ -2126,14 +2125,10 @@ virNetworkDefParseNode(xmlDocPtr xml,
     }
 
     if (!(ctxt = virXMLXPathContextNew(xml)))
-        goto cleanup;
+        return NULL;
 
     ctxt->node = root;
-    def = virNetworkDefParseXML(ctxt, xmlopt);
+    return virNetworkDefParseXML(ctxt, xmlopt);
-
- cleanup:
-    xmlXPathFreeContext(ctxt);
-    return def;
 }
 
 

src/conf/node_device_conf.c

@@ -2052,8 +2052,7 @@ virNodeDeviceDefParseNode(xmlDocPtr xml,
                           int create,
                           const char *virt_type)
 {
-    xmlXPathContextPtr ctxt = NULL;
+    VIR_AUTOPTR(xmlXPathContext) ctxt = NULL;
-    virNodeDeviceDefPtr def = NULL;
 
     if (!virXMLNodeNameEqual(root, "device")) {
         virReportError(VIR_ERR_XML_ERROR,
@@ -2064,14 +2063,10 @@ virNodeDeviceDefParseNode(xmlDocPtr xml,
     }
 
     if (!(ctxt = virXMLXPathContextNew(xml)))
-        goto cleanup;
+        return NULL;
 
     ctxt->node = root;
-    def = virNodeDeviceDefParseXML(ctxt, create, virt_type);
+    return virNodeDeviceDefParseXML(ctxt, create, virt_type);
-
- cleanup:
-    xmlXPathFreeContext(ctxt);
-    return def;
 }
 
 

src/conf/nwfilter_conf.c

@@ -2746,25 +2746,20 @@ virNWFilterDefPtr
 virNWFilterDefParseNode(xmlDocPtr xml,
                         xmlNodePtr root)
 {
-    xmlXPathContextPtr ctxt = NULL;
+    VIR_AUTOPTR(xmlXPathContext) ctxt = NULL;
-    virNWFilterDefPtr def = NULL;
 
     if (STRNEQ((const char *)root->name, "filter")) {
         virReportError(VIR_ERR_XML_ERROR,
                        "%s",
                        _("unknown root element for nw filter"));
-        goto cleanup;
+        return NULL;
     }
 
     if (!(ctxt = virXMLXPathContextNew(xml)))
-        goto cleanup;
+        return NULL;
 
     ctxt->node = root;
-    def = virNWFilterDefParseXML(ctxt);
+    return virNWFilterDefParseXML(ctxt);
-
- cleanup:
-    xmlXPathFreeContext(ctxt);
-    return def;
 }
 
 

src/conf/snapshot_conf.c

@@ -430,12 +430,11 @@ virDomainSnapshotDefParseNode(xmlDocPtr xml,
                               bool *current,
                               unsigned int flags)
 {
-    xmlXPathContextPtr ctxt = NULL;
+    VIR_AUTOPTR(xmlXPathContext) ctxt = NULL;
-    virDomainSnapshotDefPtr def = NULL;
 
     if (!virXMLNodeNameEqual(root, "domainsnapshot")) {
         virReportError(VIR_ERR_XML_ERROR, "%s", _("domainsnapshot"));
-        goto cleanup;
+        return NULL;
     }
 
     if (flags & VIR_DOMAIN_SNAPSHOT_PARSE_VALIDATE) {
@@ -445,19 +444,16 @@ virDomainSnapshotDefParseNode(xmlDocPtr xml,
                                      abs_top_srcdir "/docs/schemas",
                                      PKGDATADIR "/schemas");
         if (!schema)
-            goto cleanup;
+            return NULL;
         if (virXMLValidateAgainstSchema(schema, xml) < 0)
-            goto cleanup;
+            return NULL;
     }
 
     if (!(ctxt = virXMLXPathContextNew(xml)))
-        goto cleanup;
+        return NULL;
 
     ctxt->node = root;
-    def = virDomainSnapshotDefParse(ctxt, caps, xmlopt, parseOpaque, current, flags);
+    return virDomainSnapshotDefParse(ctxt, caps, xmlopt, parseOpaque, current, flags);
- cleanup:
-    xmlXPathFreeContext(ctxt);
-    return def;
 }
 
 virDomainSnapshotDefPtr

src/conf/storage_conf.c

@@ -1013,25 +1013,21 @@ virStoragePoolDefPtr
 virStoragePoolDefParseNode(xmlDocPtr xml,
                            xmlNodePtr root)
 {
-    xmlXPathContextPtr ctxt = NULL;
+    VIR_AUTOPTR(xmlXPathContext) ctxt = NULL;
-    virStoragePoolDefPtr def = NULL;
 
     if (!virXMLNodeNameEqual(root, "pool")) {
         virReportError(VIR_ERR_XML_ERROR,
                        _("unexpected root element <%s>, "
                          "expecting <pool>"),
                        root->name);
-        goto cleanup;
+        return NULL;
     }
 
     if (!(ctxt = virXMLXPathContextNew(xml)))
-        goto cleanup;
+        return NULL;
 
     ctxt->node = root;
-    def = virStoragePoolDefParseXML(ctxt);
+    return virStoragePoolDefParseXML(ctxt);
- cleanup:
-    xmlXPathFreeContext(ctxt);
-    return def;
 }
 
 
@@ -1454,25 +1450,21 @@ virStorageVolDefParseNode(virStoragePoolDefPtr pool,
                           xmlNodePtr root,
                           unsigned int flags)
 {
-    xmlXPathContextPtr ctxt = NULL;
+    VIR_AUTOPTR(xmlXPathContext) ctxt = NULL;
-    virStorageVolDefPtr def = NULL;
 
     if (!virXMLNodeNameEqual(root, "volume")) {
         virReportError(VIR_ERR_XML_ERROR,
                        _("unexpected root element <%s>, "
                          "expecting <volume>"),
                        root->name);
-        goto cleanup;
+        return NULL;
     }
 
     if (!(ctxt = virXMLXPathContextNew(xml)))
-        goto cleanup;
+        return NULL;
 
     ctxt->node = root;
-    def = virStorageVolDefParseXML(pool, ctxt, flags);
+    return virStorageVolDefParseXML(pool, ctxt, flags);
- cleanup:
-    xmlXPathFreeContext(ctxt);
-    return def;
 }