From 267a5ae3a8cb6e56884ae23f5fb7eecad6d62bbf Mon Sep 17 00:00:00 2001
From: Julien Duponchelle <julien@gns3.net>
Date: Fri, 27 Jan 2017 10:52:17 +0100
Subject: [PATCH] Do not crash when you broke permission on your file system
 during execution

Fix #878
---
 gns3server/controller/project.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/gns3server/controller/project.py b/gns3server/controller/project.py
index 24614236..4debcb73 100644
--- a/gns3server/controller/project.py
+++ b/gns3server/controller/project.py
@@ -643,8 +643,11 @@ class Project:
                 # We don't care if a compute is down at this step
                 except (ComputeError, aiohttp.web.HTTPNotFound, aiohttp.web.HTTPConflict):
                     pass
-            if os.path.exists(path + ".backup"):
-                shutil.copy(path + ".backup", path)
+            try:
+                if os.path.exists(path + ".backup"):
+                    shutil.copy(path + ".backup", path)
+            except (PermissionError, OSError):
+                pass
             self._status = "closed"
             self._loading = False
             raise e