Add forgotten file.

Change-Id: Ibd17bba201427b4bc0e45f29b246c20bd493c7d6

firmware/export/hostfs.h

@@ -0,0 +1,44 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright © 2013 by Thomas Martitz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+/* hosted storage driver
+ *
+ * Small functions to support storage_* api on hosted targets
+ * where we don't use raw access to storage devices but run on OS-mounted
+ * file systems */
+
+#ifndef HOSTFS_H
+#define HOSTFS_H
+
+#include <stdbool.h>
+#ifdef __unix__
+#include <unistd.h>
+#endif
+#include "config.h"
+
+extern void hostfs_init(void);
+extern int  hostfs_flush(void);
+
+#ifdef HAVE_HOTSWAP
+extern bool hostfs_removable(int drive);
+extern bool hostfs_present(int drive);
+#endif
+
+#endif /* HOSTFS_H */