1 files changed, 63 insertions, 0 deletions
diff --git a/shm/dconf-shm-nfs-check.c b/shm/dconf-shm-nfs-check.c
new file mode 100644
index 0000000..7f1b199
--- /dev/null
+++ b/shm/dconf-shm-nfs-check.c
@@ -0,0 +1,63 @@
+/*
+ * 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, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Ryan Lortie <desrt@desrt.ca>
+ */
+
+#include "dconf-shm.h"
+
+#include <glib.h>
+
+#include <sys/statfs.h>
+
+#ifndef ECRYPTFS_SUPER_MAGIC
+#define ECRYPTFS_SUPER_MAGIC 0xf15f
+#endif
+
+#ifndef NFS_SUPER_MAGIC
+#define NFS_SUPER_MAGIC 0x6969
+#endif
+
+/* returns TRUE if the filesystem is capable */
+static gboolean
+dconf_shm_check (const gchar *filename)
+{
+  struct statfs buf;
+
+  if (statfs (filename, &buf) != 0)
+    return FALSE;
+
+  return buf.f_type != NFS_SUPER_MAGIC && buf.f_type != ECRYPTFS_SUPER_MAGIC;
+}
+
+gboolean
+dconf_shm_homedir_is_native (void)
+{
+  static gsize homedir_is_native;
+
+  if (g_once_init_enter (&homedir_is_native))
+    {
+      gboolean is_native;
+
+      is_native = dconf_shm_check (g_get_home_dir ());
+
+      g_once_init_leave (&homedir_is_native, is_native + 1);
+    }
+
+  return homedir_is_native - 1;
+}