util: storagefile: rename 'nodebacking' to 'nodestorage' in virStorageSource

Make it less confusing by naming the field which refers to the storage
object as 'nodestorage'.
Reviewed-by: NEric Blake <eblake@redhat.com>

src/qemu/qemu_block.c

@@ -305,7 +305,7 @@ qemuBlockDiskClearDetectedNodes(virDomainDiskDefPtr disk)
 
     while (next) {
         VIR_FREE(next->nodeformat);
-        VIR_FREE(next->nodebacking);
+        VIR_FREE(next->nodestorage);
 
         next = next->backingStore;
     }
@@ -321,22 +321,22 @@ qemuBlockDiskDetectNodes(virDomainDiskDefPtr disk,
     virStorageSourcePtr src = disk->src;
 
     /* don't attempt the detection if the top level already has node names */
-    if (!parentnode || src->nodeformat || src->nodebacking)
+    if (!parentnode || src->nodeformat || src->nodestorage)
         return 0;
 
     while (src && parentnode) {
         if (!(entry = virHashLookup(table, parentnode)))
             break;
 
-        if (src->nodeformat || src->nodebacking) {
+        if (src->nodeformat || src->nodestorage) {
             if (STRNEQ_NULLABLE(src->nodeformat, entry->nodeformat) ||
-                STRNEQ_NULLABLE(src->nodebacking, entry->nodestorage))
+                STRNEQ_NULLABLE(src->nodestorage, entry->nodestorage))
                 goto error;
 
             break;
         } else {
             if (VIR_STRDUP(src->nodeformat, entry->nodeformat) < 0 ||
-                VIR_STRDUP(src->nodebacking, entry->nodestorage) < 0)
+                VIR_STRDUP(src->nodestorage, entry->nodestorage) < 0)
                 goto error;
         }
 

src/qemu/qemu_driver.c

@@ -19490,8 +19490,8 @@ qemuDomainGetStatsOneBlockNode(virDomainStatsRecordPtr record,
     unsigned long long tmp;
     int ret = -1;
 
-    if (src->nodebacking &&
-        (data = virHashLookup(nodedata, src->nodebacking))) {
+    if (src->nodestorage &&
+        (data = virHashLookup(nodedata, src->nodestorage))) {
         if (virJSONValueObjectGetNumberUlong(data, "write_threshold", &tmp) == 0 &&
             tmp > 0)
             QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, block_idx,
@@ -20674,18 +20674,18 @@ qemuDomainSetBlockThreshold(virDomainPtr dom,
     if (!(src = qemuDomainGetStorageSourceByDevstr(dev, vm->def)))
         goto endjob;
 
-    if (!src->nodebacking &&
+    if (!src->nodestorage &&
         qemuBlockNodeNamesDetect(driver, vm, QEMU_ASYNC_JOB_NONE) < 0)
         goto endjob;
 
-    if (!src->nodebacking) {
+    if (!src->nodestorage) {
         virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
                        _("threshold currently can't be set for block device '%s'"),
                        dev);
         goto endjob;
     }
 
-    if (VIR_STRDUP(nodename, src->nodebacking) < 0)
+    if (VIR_STRDUP(nodename, src->nodestorage) < 0)
         goto endjob;
 
     qemuDomainObjEnterMonitor(driver, vm);

src/util/virstoragefile.c

@@ -2050,7 +2050,7 @@ virStorageSourceCopy(const virStorageSource *src,
         VIR_STRDUP(ret->snapshot, src->snapshot) < 0 ||
         VIR_STRDUP(ret->configFile, src->configFile) < 0 ||
         VIR_STRDUP(ret->nodeformat, src->nodeformat) < 0 ||
-        VIR_STRDUP(ret->nodebacking, src->nodebacking) < 0 ||
+        VIR_STRDUP(ret->nodestorage, src->nodestorage) < 0 ||
         VIR_STRDUP(ret->compat, src->compat) < 0)
         goto error;
 
@@ -2271,7 +2271,7 @@ virStorageSourceClear(virStorageSourcePtr def)
     virStorageNetHostDefFree(def->nhosts, def->hosts);
     virStorageAuthDefFree(def->auth);
 
-    VIR_FREE(def->nodebacking);
+    VIR_FREE(def->nodestorage);
     VIR_FREE(def->nodeformat);
 
     virStorageSourceBackingStoreClear(def);
@@ -3941,7 +3941,7 @@ virStorageSourceFindByNodeName(virStorageSourcePtr top,
 
     for (tmp = top; tmp; tmp = tmp->backingStore) {
         if ((tmp->nodeformat && STREQ(tmp->nodeformat, nodeName)) ||
-            (tmp->nodebacking && STREQ(tmp->nodebacking, nodeName)))
+            (tmp->nodestorage && STREQ(tmp->nodestorage, nodeName)))
             return tmp;
 
         if (idx)

src/util/virstoragefile.h

@@ -279,7 +279,7 @@ struct _virStorageSource {
 
     /* metadata that allows identifying given storage source */
     char *nodeformat;  /* name of the format handler object */
-    char *nodebacking; /* name of the backing storage object */
+    char *nodestorage; /* name of the storage object */
 };