conf: whitespace cleanups and refactors with no semantic impact

This patch changes many unrelated places to simplify the code or update
code style. This patch should not have any semantic impact on the code.

src/conf/domain_conf.c

@@ -8209,9 +8209,9 @@ virDomainDeviceDefParse(virCapsPtr caps,
     xmlXPathContextPtr ctxt = NULL;
     virDomainDeviceDefPtr dev = NULL;
 
-    if (!(xml = virXMLParseStringCtxt(xmlStr, _("(device_definition)"), &ctxt))) {
+    if (!(xml = virXMLParseStringCtxt(xmlStr, _("(device_definition)"), &ctxt)))
         goto error;
-    }
+
     node = ctxt->node;
 
     if (VIR_ALLOC(dev) < 0) {
@@ -8282,20 +8282,18 @@ virDomainDeviceDefParse(virCapsPtr caps,
         if (!(dev->data.rng = virDomainRNGDefParseXML(node, ctxt, flags)))
             goto error;
     } else {
-        virReportError(VIR_ERR_XML_ERROR,
-                       "%s", _("unknown device type"));
+        virReportError(VIR_ERR_XML_ERROR, "%s", _("unknown device type"));
         goto error;
     }
 
+cleanup:
     xmlFreeDoc(xml);
     xmlXPathFreeContext(ctxt);
     return dev;
 
-  error:
-    xmlFreeDoc(xml);
-    xmlXPathFreeContext(ctxt);
+error:
     VIR_FREE(dev);
-    return NULL;
+    goto cleanup;
 }
 
 
@@ -9359,8 +9357,7 @@ virDomainDefParseXML(virCapsPtr caps,
         def->mem.cur_balloon = def->mem.max_balloon;
     }
 
-    node = virXPathNode("./memoryBacking/hugepages", ctxt);
-    if (node)
+    if ((node = virXPathNode("./memoryBacking/hugepages", ctxt)))
         def->mem.hugepage_backed = true;
 
     /* Extract blkio cgroup tunables */
@@ -9715,36 +9712,34 @@ virDomainDefParseXML(virCapsPtr caps,
     }
     VIR_FREE(nodes);
 
-    n = virXPathNodeSet("./features/*", ctxt, &nodes);
-    if (n < 0)
+    if ((n = virXPathNodeSet("./features/*", ctxt, &nodes)) < 0)
         goto error;
-    if (n) {
-        for (i = 0 ; i < n ; i++) {
-            int val = virDomainFeatureTypeFromString((const char *)nodes[i]->name);
-            if (val < 0) {
-                virReportError(VIR_ERR_INTERNAL_ERROR,
-                               _("unexpected feature %s"),
-                               nodes[i]->name);
-                goto error;
-            }
-            def->features |= (1 << val);
-            if (val == VIR_DOMAIN_FEATURE_APIC) {
-                tmp = virXPathString("string(./features/apic/@eoi)", ctxt);
-                if (tmp) {
-                    int eoi;
-                    if ((eoi = virDomainFeatureStateTypeFromString(tmp)) <= 0) {
-                        virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
-                                       _("unknown value for attribute eoi: %s"),
-                                       tmp);
-                        goto error;
-                    }
-                    def->apic_eoi = eoi;
-                    VIR_FREE(tmp);
+
+    for (i = 0 ; i < n ; i++) {
+        int val = virDomainFeatureTypeFromString((const char *)nodes[i]->name);
+        if (val < 0) {
+            virReportError(VIR_ERR_INTERNAL_ERROR,
+                           _("unexpected feature %s"),
+                           nodes[i]->name);
+            goto error;
+        }
+        def->features |= (1 << val);
+        if (val == VIR_DOMAIN_FEATURE_APIC) {
+            tmp = virXPathString("string(./features/apic/@eoi)", ctxt);
+            if (tmp) {
+                int eoi;
+                if ((eoi = virDomainFeatureStateTypeFromString(tmp)) <= 0) {
+                    virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+                                   _("unknown value for attribute eoi: %s"),
+                                   tmp);
+                    goto error;
                 }
+                def->apic_eoi = eoi;
+                VIR_FREE(tmp);
             }
         }
-        VIR_FREE(nodes);
     }
+    VIR_FREE(nodes);
 
     if (def->features & (1 << VIR_DOMAIN_FEATURE_HYPERV)) {
         int feature;
@@ -9832,17 +9827,14 @@ virDomainDefParseXML(virCapsPtr caps,
                                  &def->pm.s4) < 0)
         goto error;
 
-    tmp = virXPathString("string(./clock/@offset)", ctxt);
-    if (tmp) {
-        if ((def->clock.offset = virDomainClockOffsetTypeFromString(tmp)) < 0) {
-            virReportError(VIR_ERR_INTERNAL_ERROR,
-                           _("unknown clock offset '%s'"), tmp);
-            goto error;
-        }
-        VIR_FREE(tmp);
-    } else {
-        def->clock.offset = VIR_DOMAIN_CLOCK_OFFSET_UTC;
+    if ((tmp = virXPathString("string(./clock/@offset)", ctxt)) &&
+        (def->clock.offset = virDomainClockOffsetTypeFromString(tmp)) < 0) {
+        virReportError(VIR_ERR_INTERNAL_ERROR,
+                       _("unknown clock offset '%s'"), tmp);
+        goto error;
     }
+    VIR_FREE(tmp);
+
     switch (def->clock.offset) {
     case VIR_DOMAIN_CLOCK_OFFSET_LOCALTIME:
     case VIR_DOMAIN_CLOCK_OFFSET_UTC:
@@ -9901,11 +9893,12 @@ virDomainDefParseXML(virCapsPtr caps,
         break;
     }
 
-    if ((n = virXPathNodeSet("./clock/timer", ctxt, &nodes)) < 0) {
+    if ((n = virXPathNodeSet("./clock/timer", ctxt, &nodes)) < 0)
         goto error;
-    }
+
     if (n && VIR_ALLOC_N(def->clock.timers, n) < 0)
         goto no_memory;
+
     for (i = 0 ; i < n ; i++) {
         virDomainTimerDefPtr timer = virDomainTimerDefParseXML(nodes[i],
                                                                ctxt);
@@ -10769,8 +10762,8 @@ virDomainDefParseXML(virCapsPtr caps,
             }
         }
     }
-    tmp = virXPathString("string(./os/smbios/@mode)", ctxt);
-    if (tmp) {
+
+    if ((tmp = virXPathString("string(./os/smbios/@mode)", ctxt))) {
         int mode;
 
         if ((mode = virDomainSmbiosModeTypeFromString(tmp)) < 0) {
@@ -10780,27 +10773,22 @@ virDomainDefParseXML(virCapsPtr caps,
         }
         def->os.smbios_mode = mode;
         VIR_FREE(tmp);
-    } else {
-        def->os.smbios_mode = VIR_DOMAIN_SMBIOS_NONE; /* not present */
     }
 
     /* Extract custom metadata */
-    if ((node = virXPathNode("./metadata[1]", ctxt)) != NULL) {
+    if ((node = virXPathNode("./metadata[1]", ctxt)) != NULL)
         def->metadata = xmlCopyNode(node, 1);
-    }
 
     /* we have to make a copy of all of the callback pointers here since
      * we won't have the virCaps structure available during free
      */
     def->ns = caps->ns;
 
-    if (def->ns.parse) {
-        if ((def->ns.parse)(xml, root, ctxt, &def->namespaceData) < 0)
-            goto error;
-    }
+    if (def->ns.parse &&
+        (def->ns.parse)(xml, root, ctxt, &def->namespaceData) < 0)
+        goto error;
 
-    /* Auto-add any implied controllers which aren't present
-     */
+    /* Auto-add any implied controllers which aren't present */
     if (virDomainDefAddImplicitControllers(def) < 0)
         goto error;
 
@@ -10810,9 +10798,7 @@ virDomainDefParseXML(virCapsPtr caps,
 
 no_memory:
     virReportOOMError();
-    /* fallthrough */
-
- error:
+error:
     VIR_FREE(tmp);
     VIR_FREE(nodes);
     virBitmapFree(bootMap);
@@ -11010,8 +10996,7 @@ virDomainObjParseNode(virCapsPtr caps,
         goto cleanup;
     }
 
-    ctxt = xmlXPathNewContext(xml);
-    if (ctxt == NULL) {
+    if (!(ctxt = xmlXPathNewContext(xml))) {
         virReportOOMError();
         goto cleanup;
     }
@@ -15131,8 +15116,7 @@ virDomainSaveConfig(const char *configDir,
     int ret = -1;
     char *xml;
 
-    if (!(xml = virDomainDefFormat(def,
-                                   VIR_DOMAIN_XML_WRITE_FLAGS)))
+    if (!(xml = virDomainDefFormat(def, VIR_DOMAIN_XML_WRITE_FLAGS)))
         goto cleanup;
 
     if (virDomainSaveXML(configDir, def, xml))
@@ -15341,7 +15325,8 @@ virDomainDeleteConfig(const char *configDir,
 
     if ((configFile = virDomainConfigFile(configDir, dom->def->name)) == NULL)
         goto cleanup;
-    if ((autostartLink = virDomainConfigFile(autostartDir, dom->def->name)) == NULL)
+    if ((autostartLink = virDomainConfigFile(autostartDir,
+                                             dom->def->name)) == NULL)
         goto cleanup;
 
     /* Not fatal if this doesn't work */
@@ -15367,12 +15352,10 @@ char
 *virDomainConfigFile(const char *dir,
                      const char *name)
 {
-    char *ret = NULL;
+    char *ret;
 
-    if (virAsprintf(&ret, "%s/%s.xml", dir, name) < 0) {
+    if (virAsprintf(&ret, "%s/%s.xml", dir, name) < 0)
         virReportOOMError();
-        return NULL;
-    }
 
     return ret;
 }
@@ -15544,16 +15527,13 @@ virDomainObjListGetInactiveNames(virDomainObjListPtr doms,
     virHashForEach(doms->objs, virDomainObjListCopyInactiveNames, &data);
     virObjectUnlock(doms);
     if (data.oom) {
+        for (i = 0 ; i < data.numnames ; i++)
+            VIR_FREE(data.names[i]);
         virReportOOMError();
-        goto cleanup;
+        return -1;
     }
 
     return data.numnames;
-
-cleanup:
-    for (i = 0 ; i < data.numnames ; i++)
-        VIR_FREE(data.names[i]);
-    return -1;
 }
 
 
@@ -15723,8 +15703,7 @@ virDomainDefCopy(virCapsPtr caps, virDomainDefPtr src, bool migratable)
         write_flags |= VIR_DOMAIN_XML_INACTIVE | VIR_DOMAIN_XML_MIGRATABLE;
 
     /* Easiest to clone via a round-trip through XML.  */
-    xml = virDomainDefFormat(src, write_flags);
-    if (!xml)
+    if (!(xml = virDomainDefFormat(src, write_flags)))
         return NULL;
 
     ret = virDomainDefParseString(caps, xml, -1, read_flags);

src/conf/domain_conf.h

@@ -773,7 +773,7 @@ struct _virDomainFSDef {
 };
 
 
-/* 5 different types of networking config */
+/* network config types */
 enum virDomainNetType {
     VIR_DOMAIN_NET_TYPE_USER,
     VIR_DOMAIN_NET_TYPE_ETHERNET,
@@ -1410,7 +1410,7 @@ struct _virDomainMemballoonDef {
 
 
 enum virDomainSmbiosMode {
-    VIR_DOMAIN_SMBIOS_NONE,
+    VIR_DOMAIN_SMBIOS_NONE = 0,
     VIR_DOMAIN_SMBIOS_EMULATE,
     VIR_DOMAIN_SMBIOS_HOST,
     VIR_DOMAIN_SMBIOS_SYSINFO,