1 files changed, 95 insertions, 0 deletions
diff --git a/engine/dconf-engine-source-service.c b/engine/dconf-engine-source-service.c
new file mode 100644
index 0000000..f92f4ae
--- /dev/null
+++ b/engine/dconf-engine-source-service.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright © 2010 Codethink Limited
+ * Copyright © 2012 Canonical Limited
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Ryan Lortie <desrt@desrt.ca>
+ */
+
+#include "config.h"
+
+#include "dconf-engine-source-private.h"
+
+#include "dconf-engine.h"
+#include <sys/mman.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+
+static void
+dconf_engine_source_service_init (DConfEngineSource *source)
+{
+  source->bus_type = G_BUS_TYPE_SESSION;
+  source->bus_name = g_strdup ("ca.desrt.dconf");
+  source->object_path = g_strdup_printf ("/ca/desrt/dconf/%s", source->name);
+  source->writable = TRUE;
+}
+
+static gboolean
+dconf_engine_source_service_needs_reopen (DConfEngineSource *source)
+{
+  return !source->values || !gvdb_table_is_valid (source->values);
+}
+
+static GvdbTable *
+dconf_engine_source_service_reopen (DConfEngineSource *source)
+{
+  GError *error = NULL;
+  GvdbTable *table;
+  gchar *filename;
+
+  filename = g_build_filename (g_get_user_runtime_dir (), "dconf-service", source->name, NULL);
+
+  table = gvdb_table_new (filename, FALSE, NULL);
+
+  if (table == NULL)
+    {
+      /* If the file does not exist, kick the service to have it created. */
+      dconf_engine_dbus_call_sync_func (source->bus_type, source->bus_name, source->object_path,
+                                        "ca.desrt.dconf.Writer", "Init", g_variant_new ("()"), NULL, NULL);
+
+      /* try again */
+      table = gvdb_table_new (filename, FALSE, &error);
+
+      if (table == NULL)
+        {
+          if (!source->did_warn)
+            {
+              g_warning ("unable to open file '%s': %s; expect degraded performance", filename, error->message);
+              source->did_warn = TRUE;
+            }
+
+          g_error_free (error);
+        }
+    }
+
+  g_free (filename);
+
+  return table;
+}
+
+static void
+dconf_engine_source_service_finalize (DConfEngineSource *source)
+{
+}
+
+G_GNUC_INTERNAL
+const DConfEngineSourceVTable dconf_engine_source_service_vtable = {
+  .instance_size    = sizeof (DConfEngineSource),
+  .init             = dconf_engine_source_service_init,
+  .finalize         = dconf_engine_source_service_finalize,
+  .needs_reopen     = dconf_engine_source_service_needs_reopen,
+  .reopen           = dconf_engine_source_service_reopen
+};