[gvfs] network: Fix crashes when mount failed

[Ondrej Holy <oholy src gnome org>]

commit 45c4dcc3bcd40df923ef1e6152eb3502f0030960
Author: Ondrej Holy <oholy redhat com>
Date:   Wed Jan 27 09:07:02 2016 +0100

    network: Fix crashes when mount failed
    
    Mount operation might fail if you run multiple mount operations concurrently.
    Backend memory is released consequently. Unfortunatelly some idle sources
    and signal handlers are not removed, which might cause segmentation faults.
    This patch fixes this and also some other memory leaks.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=712235

 daemon/gvfsbackendnetwork.c |   26 ++++++++++++++++++++++++--
 1 files changed, 24 insertions(+), 2 deletions(-)
---
diff --git a/daemon/gvfsbackendnetwork.c b/daemon/gvfsbackendnetwork.c
index 5e55b4b..4530705 100644
--- a/daemon/gvfsbackendnetwork.c
+++ b/daemon/gvfsbackendnetwork.c
@@ -299,7 +299,7 @@ update_from_files (GVfsBackendNetwork *backend,
         }
     }
 
-  g_list_foreach (old_files, (GFunc)network_file_free, NULL);
+  g_list_free_full (old_files, (GDestroyNotify)network_file_free);
 }
 
 static void
@@ -652,7 +652,7 @@ smb_settings_change_event_cb (GSettings *settings,
     {
       g_signal_handlers_disconnect_by_func (backend->smb_monitor,
                                            notify_smb_files_changed,
-                                           backend->smb_monitor);
+                                           backend);
       g_file_monitor_cancel (backend->smb_monitor);
       g_object_unref (backend->smb_monitor);
       backend->smb_monitor = NULL;
@@ -960,6 +960,28 @@ g_vfs_backend_network_finalize (GObject *object)
     g_object_unref (backend->smb_settings);
   if (backend->dnssd_settings)
     g_object_unref (backend->dnssd_settings);
+  if (backend->dnssd_monitor)
+    {
+      g_signal_handlers_disconnect_by_func (backend->dnssd_monitor, notify_dnssd_local_changed, backend);
+      g_clear_object (&backend->dnssd_monitor);
+    }
+  if (backend->smb_monitor)
+    {
+      g_signal_handlers_disconnect_by_func (backend->smb_monitor, notify_smb_files_changed, backend);
+      g_clear_object (&backend->smb_monitor);
+    }
+  if (backend->idle_tag)
+    {
+      g_source_remove (backend->idle_tag);
+      backend->idle_tag = 0;
+    }
+  if (backend->files)
+    {
+      g_list_free_full (backend->files, (GDestroyNotify)network_file_free);
+      backend->files = NULL;
+    }
+  g_free (backend->current_workgroup);
+  g_free (backend->extra_domains);
 
   if (G_OBJECT_CLASS (g_vfs_backend_network_parent_class)->finalize)
     (*G_OBJECT_CLASS (g_vfs_backend_network_parent_class)->finalize) (object);