add db restriction

liuxiaolong

2020-08-13 c6b1cadc0214c6791a5c5bcc62ab57601e38f457

 controllers/sys.go

@@ -43,6 +43,7 @@
            fmt.Println("unmarshal err:", e1)
            result.Msg = []string{}
         }
         result.Size = sv.Size

      } else {
         result.IsUpgrade = false