[gvfs] MTP: Emit delete events when unmounting.

[Philip Langdale <philipl src gnome org>]

commit be000ea91e90186bb6f1031348e33d5b9025251a
Author: Philip Langdale <philipl overt org>
Date:   Sat Jul 26 21:04:53 2014 -0700

    MTP: Emit delete events when unmounting.
    
    Although it would seem obvious that a mount disappearing should
    invalidate any file references in clients, recent versions of
    Nautilus will keep open windows around, showing all the files that
    were there at the time of the unmount.
    
    So, clearly we need to emit these events to get it to clean itself
    up.

 daemon/gvfsbackendmtp.c |   26 ++++++++++++++++++++++++++
 1 files changed, 26 insertions(+), 0 deletions(-)
---
diff --git a/daemon/gvfsbackendmtp.c b/daemon/gvfsbackendmtp.c
index bbd2433..ee50350 100644
--- a/daemon/gvfsbackendmtp.c
+++ b/daemon/gvfsbackendmtp.c
@@ -586,6 +586,20 @@ on_uevent (GUdevClient *client, gchar *action, GUdevDevice *device, gpointer use
   if (g_strcmp0 (op_backend->dev_path, dev_path) == 0 &&
       g_str_equal (action, "remove")) {
     DEBUG ("(I) on_uevent: Quiting after remove event on device %s\n", dev_path);
+
+    /* Emit delete events to tell clients files are gone. */
+    GHashTableIter iter;
+    gpointer key, value;
+    g_hash_table_iter_init (&iter, op_backend->file_cache);
+    while (g_hash_table_iter_next (&iter, &key, &value)) {
+      const char *path = key;
+      const CacheEntry *entry = value;
+
+      g_hash_table_foreach (op_backend->monitors,
+                            emit_delete_event,
+                           (char *)path);
+    }
+
     g_vfs_backend_force_unmount ((GVfsBackend*)op_backend);
   }
 
@@ -840,6 +854,18 @@ do_unmount (GVfsBackend *backend, GVfsJobUnmount *job,
 
   g_atomic_int_set (&op_backend->unmount_started, TRUE);
 
+  /* Emit delete events to tell clients files are gone. */
+  GHashTableIter iter;
+  gpointer key, value;
+  g_hash_table_iter_init (&iter, op_backend->file_cache);
+  while (g_hash_table_iter_next (&iter, &key, &value)) {
+    const char *path = key;
+    const CacheEntry *entry = value;
+
+    g_hash_table_foreach (op_backend->monitors,
+                          emit_delete_event,
+                         (char *)path);
+  }
   g_hash_table_unref (op_backend->file_cache);
 
   g_source_remove (op_backend->hb_id);