[gvfs] daemon: Add missing guards for job_sources

[Ondrej Holy <oholy src gnome org>]

commit e147e48f91c208aa2517b52a9dfeb62daa4ffb26
Author: Ondrej Holy <oholy redhat com>
Date:   Fri Feb 16 10:22:57 2018 +0100

    daemon: Add missing guards for job_sources
    
    Use daemon->lock when accessing daemon->job_sources as on other places.
    This might potentially help to fix some segfaults.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=787992

 daemon/gvfsdaemon.c |   16 ++++++++++++----
 1 files changed, 12 insertions(+), 4 deletions(-)
---
diff --git a/daemon/gvfsdaemon.c b/daemon/gvfsdaemon.c
index 69e5687..09336ec 100644
--- a/daemon/gvfsdaemon.c
+++ b/daemon/gvfsdaemon.c
@@ -1067,6 +1067,8 @@ g_vfs_daemon_get_blocking_processes (GVfsDaemon *daemon)
   GArray *processes;
   GList *l;
 
+  g_mutex_lock (&daemon->lock);
+
   processes = g_array_new (FALSE, FALSE, sizeof (GPid));
   for (l = daemon->job_sources; l != NULL; l = l->next)
     {
@@ -1078,6 +1080,8 @@ g_vfs_daemon_get_blocking_processes (GVfsDaemon *daemon)
         }
     }
 
+  g_mutex_unlock (&daemon->lock);
+
   return processes;
 }
 
@@ -1122,8 +1126,12 @@ g_vfs_daemon_close_active_channels (GVfsDaemon *daemon,
 {
   GList *l;
 
-   for (l = daemon->job_sources; l != NULL; l = l->next)
-      if (G_VFS_IS_CHANNEL (l->data) &&
-          g_vfs_channel_get_backend (G_VFS_CHANNEL (l->data)) == backend)
-        g_vfs_channel_force_close (G_VFS_CHANNEL (l->data));
+  g_mutex_lock (&daemon->lock);
+
+  for (l = daemon->job_sources; l != NULL; l = l->next)
+    if (G_VFS_IS_CHANNEL (l->data) &&
+        g_vfs_channel_get_backend (G_VFS_CHANNEL (l->data)) == backend)
+      g_vfs_channel_force_close (G_VFS_CHANNEL (l->data));
+
+  g_mutex_unlock (&daemon->lock);
 }