scrrun: Implement get_VolumeName().

dlls/scrrun/filesystem.c

@@ -957,8 +957,19 @@ static HRESULT WINAPI drive_get_TotalSize(IDrive *iface, VARIANT *v)
 static HRESULT WINAPI drive_get_VolumeName(IDrive *iface, BSTR *name)
 {
     struct drive *This = impl_from_IDrive(iface);
-    FIXME("(%p)->(%p): stub\n", This, name);
-    return E_NOTIMPL;
+    WCHAR nameW[MAX_PATH+1];
+    BOOL ret;
+
+    TRACE("(%p)->(%p)\n", This, name);
+
+    if (!name)
+        return E_POINTER;
+
+    *name = NULL;
+    ret = GetVolumeInformationW(This->root, nameW, sizeof(nameW)/sizeof(WCHAR), NULL, NULL, NULL, NULL, 0);
+    if (ret)
+        *name = SysAllocString(nameW);
+    return ret ? S_OK : E_FAIL;
 }
 
 static HRESULT WINAPI drive_put_VolumeName(IDrive *iface, BSTR name)

dlls/scrrun/tests/filesystem.c

@@ -1830,6 +1830,15 @@ static void test_SerialNumber(void)
     ok(name != NULL, "got %p\n", name);
     SysFreeString(name);
 
+    hr = IDrive_get_VolumeName(drive, NULL);
+    ok(hr == E_POINTER, "got 0x%08x\n", hr);
+
+    name = NULL;
+    hr = IDrive_get_VolumeName(drive, &name);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+    ok(name != NULL, "got %p\n", name);
+    SysFreeString(name);
+
     IDrive_Release(drive);
     IEnumVARIANT_Release(iter);
     IDriveCollection_Release(drives);