catch control-c action.

mdrsclient/config.py

@@ -6,6 +6,7 @@ import validators
 
 from mdrsclient.exceptions import IllegalArgumentException
 from mdrsclient.settings import CONFIG_DIRNAME
+from mdrsclient.utils import FileLock
 
 
 class ConfigFile:
@@ -70,7 +71,9 @@ class ConfigFile:
     def __save(self) -> None:
         self.__ensure_cache_dir()
         with open(self.__config_path, "w") as f:
+            FileLock.lock(f)
             self.__config.write(f)
+            FileLock.unlock(f)
         os.chmod(self.__config_path, 0o600)
 
     def __ensure_cache_dir(self) -> None: