From 7e1e63cd09897693050c2b64013e32127b20a793 Mon Sep 17 00:00:00 2001
From: Julien Duponchelle <julien@gns3.net>
Date: Tue, 28 Feb 2017 14:31:52 +0100
Subject: [PATCH] Catch error when we can't save the settings

Fix #921
---
 gns3server/handlers/api/controller/server_handler.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gns3server/handlers/api/controller/server_handler.py b/gns3server/handlers/api/controller/server_handler.py
index b66f2e83..f6551550 100644
--- a/gns3server/handlers/api/controller/server_handler.py
+++ b/gns3server/handlers/api/controller/server_handler.py
@@ -114,7 +114,10 @@ class ServerHandler:
     def write_settings(request, response):
         controller = Controller.instance()
         controller.settings = request.json
-        controller.save()
+        try:
+            controller.save()
+        except (OSError, PermissionError) as e:
+            raise HTTPConflict(text="Can't save the settings {}".format(str(e)))
         response.json(controller.settings)
         response.set_status(201)