!13274 modify mindir file authority

From: @changzherui
Reviewed-by: @kingxian,@zhunaipan
Signed-off-by: @kingxian

mindspore/train/serialization.py

@@ -481,8 +481,8 @@ def _save_graph(network, file_name):
     graph_pb = network.get_func_graph_proto()
     if graph_pb:
         with open(file_name, "wb") as f:
+            os.chmod(file_name, stat.S_IRUSR | stat.S_IWUSR)
             f.write(graph_pb)
-        os.chmod(file_name, stat.S_IRUSR)
 
 
 def _get_merged_param_data(net, param_name, param_data, integrated_save):
@@ -637,7 +637,7 @@ def _export(net, file_name, file_format, *inputs):
         if not file_name.endswith('.onnx'):
             file_name += ".onnx"
         with open(file_name, 'wb') as f:
-            os.chmod(file_name, stat.S_IWUSR | stat.S_IRUSR)
+            os.chmod(file_name, stat.S_IRUSR | stat.S_IWUSR)
             f.write(onnx_stream)
     elif file_format == 'MINDIR':
         _save_mindir(net, file_name, *inputs)
@@ -687,7 +687,7 @@ def _save_mindir(net, file_name, *inputs):
         dirname = os.path.dirname(current_path)
         os.makedirs(dirname, exist_ok=True)
         with open(file_name, 'wb') as f:
-            os.chmod(file_name, stat.S_IWUSR | stat.S_IRUSR)
+            os.chmod(file_name, stat.S_IRUSR | stat.S_IWUSR)
             f.write(model.SerializeToString())
     else:
         logger.warning("Parameters in the net capacity exceeds 1G, save MindIR model and parameters separately.")
@@ -701,6 +701,7 @@ def _save_mindir(net, file_name, *inputs):
         if os.path.exists(data_path):
             shutil.rmtree(data_path)
         os.makedirs(data_path, exist_ok=True)
+        os.chmod(data_path, stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR)
         index = 0
         graphproto = graph_proto()
         data_size = 0
@@ -720,6 +721,7 @@ def _save_mindir(net, file_name, *inputs):
             if data_size > TOTAL_SAVE:
                 data_file_name = data_path + "/" + "data_" + str(index)
                 with open(data_file_name, "ab") as f:
+                    os.chmod(file_name, stat.S_IRUSR | stat.S_IWUSR)
                     f.write(graphproto.SerializeToString())
                 index += 1
                 data_size = 0
@@ -728,13 +730,14 @@ def _save_mindir(net, file_name, *inputs):
         if graphproto.parameter:
             data_file_name = data_path + "/" + "data_" + str(index)
             with open(data_file_name, "ab") as f:
+                os.chmod(file_name, stat.S_IRUSR | stat.S_IWUSR)
                 f.write(graphproto.SerializeToString())
 
         # save graph
         del model.graph.parameter[:]
         graph_file_name = dirname + "/" + file_prefix + "_graph.mindir"
         with open(graph_file_name, 'wb') as f:
-            os.chmod(graph_file_name, stat.S_IWUSR | stat.S_IRUSR)
+            os.chmod(graph_file_name, stat.S_IRUSR | stat.S_IWUSR)
             f.write(model.SerializeToString())