storage: Introduce virStoragePoolObjVolumeGetNames

Mostly code motion to move storagePoolListVolumes code into virstorageobj.c
and rename to virStoragePoolObjVolumeGetNames.

Also includes a couple of variable name adjustments to keep code consistent
with other drivers.

Signed-off-by: John Ferlan <jferlan@redhat.com>

src/conf/virstorageobj.c

@@ -215,6 +215,36 @@ virStoragePoolObjNumOfVolumes(virStorageVolDefListPtr volumes,
 }
 
 
+int
+virStoragePoolObjVolumeGetNames(virStorageVolDefListPtr volumes,
+                                virConnectPtr conn,
+                                virStoragePoolDefPtr pooldef,
+                                virStoragePoolVolumeACLFilter aclfilter,
+                                char **const names,
+                                int maxnames)
+{
+    int nnames = 0;
+    size_t i;
+
+    for (i = 0; i < volumes->count && nnames < maxnames; i++) {
+        virStorageVolDefPtr def = volumes->objs[i];
+        if (aclfilter && !aclfilter(conn, pooldef, def))
+            continue;
+        if (VIR_STRDUP(names[nnames], def->name) < 0)
+            goto failure;
+        nnames++;
+    }
+
+    return nnames;
+
+ failure:
+    while (--nnames >= 0)
+        VIR_FREE(names[nnames]);
+
+    return -1;
+}
+
+
 virStoragePoolObjPtr
 virStoragePoolObjAssignDef(virStoragePoolObjListPtr pools,
                            virStoragePoolDefPtr def)

src/conf/virstorageobj.h

@@ -119,6 +119,14 @@ virStoragePoolObjNumOfVolumes(virStorageVolDefListPtr volumes,
                               virStoragePoolDefPtr pooldef,
                               virStoragePoolVolumeACLFilter aclfilter);
 
+int
+virStoragePoolObjVolumeGetNames(virStorageVolDefListPtr volumes,
+                                virConnectPtr conn,
+                                virStoragePoolDefPtr pooldef,
+                                virStoragePoolVolumeACLFilter aclfilter,
+                                char **const names,
+                                int maxnames);
+
 virStoragePoolObjPtr
 virStoragePoolObjAssignDef(virStoragePoolObjListPtr pools,
                            virStoragePoolDefPtr def);

src/libvirt_private.syms

@@ -1010,6 +1010,7 @@ virStoragePoolObjRemove;
 virStoragePoolObjSaveDef;
 virStoragePoolObjSourceFindDuplicate;
 virStoragePoolObjUnlock;
+virStoragePoolObjVolumeGetNames;
 
 
 # cpu/cpu.h

src/storage/storage_driver.c

@@ -1411,16 +1411,14 @@ storagePoolNumOfVolumes(virStoragePoolPtr obj)
     return ret;
 }
 
+
 static int
 storagePoolListVolumes(virStoragePoolPtr obj,
                        char **const names,
                        int maxnames)
 {
     virStoragePoolObjPtr pool;
-    size_t i;
-    int n = 0;
-
-    memset(names, 0, maxnames * sizeof(*names));
+    int n = -1;
 
     if (!(pool = virStoragePoolObjFromStoragePool(obj)))
         return -1;
@@ -1434,24 +1432,12 @@ storagePoolListVolumes(virStoragePoolPtr obj,
         goto cleanup;
     }
 
-    for (i = 0; i < pool->volumes.count && n < maxnames; i++) {
-        if (!virStoragePoolListVolumesCheckACL(obj->conn, pool->def,
-                                               pool->volumes.objs[i]))
-            continue;
-        if (VIR_STRDUP(names[n++], pool->volumes.objs[i]->name) < 0)
-            goto cleanup;
-    }
-
-    virStoragePoolObjUnlock(pool);
-    return n;
-
+    n = virStoragePoolObjVolumeGetNames(&pool->volumes, obj->conn, pool->def,
+                                        virStoragePoolListVolumesCheckACL,
+                                        names, maxnames);
  cleanup:
     virStoragePoolObjUnlock(pool);
-    for (n = 0; n < maxnames; n++)
-        VIR_FREE(names[n]);
-
-    memset(names, 0, maxnames * sizeof(*names));
-    return -1;
+    return n;
 }
 
 static int

src/test/test_driver.c

@@ -4817,6 +4817,7 @@ testStoragePoolNumOfVolumes(virStoragePoolPtr pool)
     return ret;
 }
 
+
 static int
 testStoragePoolListVolumes(virStoragePoolPtr pool,
                            char **const names,
@@ -4824,13 +4825,10 @@ testStoragePoolListVolumes(virStoragePoolPtr pool,
 {
     testDriverPtr privconn = pool->conn->privateData;
     virStoragePoolObjPtr privpool;
-    size_t i = 0;
-    int n = 0;
-
-    memset(names, 0, maxnames * sizeof(*names));
+    int n = -1;
 
     if (!(privpool = testStoragePoolObjFindByName(privconn, pool->name)))
-        goto cleanup;
+        return -1;
 
     if (!virStoragePoolObjIsActive(privpool)) {
         virReportError(VIR_ERR_OPERATION_INVALID,
@@ -4838,24 +4836,15 @@ testStoragePoolListVolumes(virStoragePoolPtr pool,
         goto cleanup;
     }
 
-    for (i = 0; i < privpool->volumes.count && n < maxnames; i++) {
-        if (VIR_STRDUP(names[n++], privpool->volumes.objs[i]->name) < 0)
-            goto cleanup;
-    }
-
-    virStoragePoolObjUnlock(privpool);
-    return n;
+    n = virStoragePoolObjVolumeGetNames(&privpool->volumes, pool->conn,
+                                        privpool->def, NULL, names, maxnames);
 
  cleanup:
-    for (n = 0; n < maxnames; n++)
-        VIR_FREE(names[i]);
-
-    memset(names, 0, maxnames * sizeof(*names));
-    if (privpool)
-        virStoragePoolObjUnlock(privpool);
-    return -1;
+    virStoragePoolObjUnlock(privpool);
+    return n;
 }
 
+
 static int
 testStoragePoolListAllVolumes(virStoragePoolPtr obj,
                               virStorageVolPtr **vols,