conf: Refactor virDomainDiskSourcePoolDefParse

For some strange reason virDomainDiskSourcePoolDefParse accessed def of
the disk and allocated the pool object in it. To avoid the need to carry
over the disk definition object, refactor this function to return the
allocated object instead.

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 78496937d49a696351479484af34169975d228fa..50ce44dba7e29a5aabc912212d3e2f2308fd1662 100644 (file)
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -4683,49 +4683,48 @@ cleanup:
 
 static int
 virDomainDiskSourcePoolDefParse(xmlNodePtr node,
-                                virDomainDiskDefPtr def)
+                                virDomainDiskSourcePoolDefPtr *srcpool)
 {
-    char *pool = NULL;
-    char *volume = NULL;
     char *mode = NULL;
+    virDomainDiskSourcePoolDefPtr source;
     int ret = -1;
 
-    pool = virXMLPropString(node, "pool");
-    volume = virXMLPropString(node, "volume");
+    *srcpool = NULL;
+
+    if (VIR_ALLOC(source) < 0)
+        return -1;
+
+    source->pool = virXMLPropString(node, "pool");
+    source->volume = virXMLPropString(node, "volume");
     mode = virXMLPropString(node, "mode");
 
     /* CD-ROM and Floppy allows no source */
-    if (!pool && !volume)
-        return 0;
+    if (!source->pool && !source->volume) {
+        ret = 0;
+        goto cleanup;
+    }
 
-    if (!pool || !volume) {
+    if (!source->pool || !source->volume) {
         virReportError(VIR_ERR_XML_ERROR, "%s",
                        _("'pool' and 'volume' must be specified together "
                          "for 'pool' type source"));
         goto cleanup;
     }
 
-    if (VIR_ALLOC(def->srcpool) < 0)
-        goto cleanup;
-
-    if (mode && (def->srcpool->mode =
-                 virDomainDiskSourcePoolModeTypeFromString(mode)) <= 0) {
+    if (mode &&
+        (source->mode = virDomainDiskSourcePoolModeTypeFromString(mode)) <= 0) {
         virReportError(VIR_ERR_XML_ERROR,
                        _("unknown source mode '%s' for volume type disk"),
                        mode);
         goto cleanup;
     }
 
-    def->srcpool->pool = pool;
-    pool = NULL;
-    def->srcpool->volume = volume;
-    volume = NULL;
-
+    *srcpool = source;
+    source = NULL;
     ret = 0;
 
 cleanup:
-    VIR_FREE(pool);
-    VIR_FREE(volume);
+    virDomainDiskSourcePoolDefFree(source);
     VIR_FREE(mode);
     return ret;
 }
@@ -4916,7 +4915,7 @@ virDomainDiskDefParseXML(virDomainXMLOptionPtr xmlopt,
                     }
                     break;
                 case VIR_DOMAIN_DISK_TYPE_VOLUME:
-                    if (virDomainDiskSourcePoolDefParse(cur, def) < 0)
+                    if (virDomainDiskSourcePoolDefParse(cur, &def->srcpool) < 0)
                         goto error;
                     break;
                 default: