1 files changed, 40 insertions, 0 deletions
diff --git a/cpukit/libcsupport/src/sup_fs_exist_in_same_instance.c b/cpukit/libcsupport/src/sup_fs_exist_in_same_instance.c
new file mode 100644
index 0000000000..71a4d43b7c
--- /dev/null
+++ b/cpukit/libcsupport/src/sup_fs_exist_in_same_instance.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2012 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Obere Lagerstr. 30
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#if HAVE_CONFIG_H
+  #include "config.h"
+#endif
+
+#include <rtems/libio_.h>
+
+int rtems_filesystem_location_exists_in_same_fs_instance_as(
+  const rtems_filesystem_location_info_t *a,
+  const rtems_filesystem_location_info_t *b
+)
+{
+  int rv = -1;
+
+  if (
+    !rtems_filesystem_location_is_null( a )
+      && !rtems_filesystem_location_is_null( b )
+  ) {
+    if ( a->mt_entry == b->mt_entry ) {
+      rv = 0;
+    } else {
+      errno = EXDEV;
+    }
+  }
+
+  return rv;
+}