diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index cb80f09cc1633a03534e643d56c1c72770ff34f7..dd450b64635f1b93f36245c8acb554e73104751f 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -2011,6 +2011,30 @@ virDomainDeviceInfoIsSet(virDomainDeviceInfoPtr info, unsigned int flags)
     return false;
 }
 
+int
+virDomainDeviceInfoCopy(virDomainDeviceInfoPtr dst,
+                        virDomainDeviceInfoPtr src)
+{
+    /* Assume that dst is already cleared */
+
+    /* first a shallow copy of *everything* */
+    *dst = *src;
+
+    /* then redo the two fields that are pointers */
+    dst->alias = NULL;
+    dst->romfile = NULL;
+
+    if (src->alias && !(dst->alias = strdup(src->alias))) {
+        virReportOOMError();
+        return -1;
+    }
+    if (src->romfile && !(dst->romfile = strdup(src->romfile))) {
+        virReportOOMError();
+        return -1;
+    }
+    return 0;
+}
+
 void virDomainDeviceInfoClear(virDomainDeviceInfoPtr info)
 {
     VIR_FREE(info->alias);
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 5ca1820fdd83a641a3add07f1e5204529d43c0e4..1ee4b30e1cc6d7962fbe0c41cdd6434e03c16eb2 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1891,6 +1891,8 @@ virDomainDeviceDefPtr virDomainDeviceDefCopy(virCapsPtr caps,
                                              virDomainDeviceDefPtr src);
 int virDomainDeviceAddressIsValid(virDomainDeviceInfoPtr info,
                                   int type);
+int virDomainDeviceInfoCopy(virDomainDeviceInfoPtr dst,
+                            virDomainDeviceInfoPtr src);
 void virDomainDeviceInfoClear(virDomainDeviceInfoPtr info);
 void virDomainDefClearPCIAddresses(virDomainDefPtr def);
 void virDomainDefClearDeviceAliases(virDomainDefPtr def);
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 6ea1308e3dbb43ba26716c2377a7166d921d66b2..4028e5b14b4b95a7bc7fdf09b5c2a8fd74ccdc65 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -328,6 +328,7 @@ virDomainDeviceAddressTypeToString;
 virDomainDeviceDefCopy;
 virDomainDeviceDefFree;
 virDomainDeviceDefParse;
+virDomainDeviceInfoCopy;
 virDomainDeviceInfoIterate;
 virDomainDeviceTypeToString;
 virDomainDiskBusTypeToString;