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diff --git a/backends/fs/riscos/riscos-fs.h b/backends/fs/riscos/riscos-fs.h
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+++ b/backends/fs/riscos/riscos-fs.h
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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef RISCOS_FILESYSTEM_H
+#define RISCOS_FILESYSTEM_H
+
+#include "backends/fs/abstract-fs.h"
+
+/**
+ * Implementation of the ScummVM file system API.
+ *
+ * Parts of this class are documented in the base interface class, AbstractFSNode.
+ */
+class RISCOSFilesystemNode : public AbstractFSNode {
+protected:
+	Common::String _displayName;
+	Common::String _path;
+	bool _isDirectory;
+	bool _isValid;
+
+	virtual AbstractFSNode *makeNode(const Common::String &path) const {
+		return new RISCOSFilesystemNode(path);
+	}
+
+	/**
+	 * Plain constructor, for internal use only (hence protected).
+	 */
+	RISCOSFilesystemNode() : _isDirectory(false), _isValid(false) {}
+public:
+	/**
+	 * Creates a RISCOSFilesystemNode for a given path.
+	 *
+	 * @param path the path the new node should point to.
+	 */
+	RISCOSFilesystemNode(const Common::String &path);
+
+	virtual bool exists() const;
+	virtual Common::String getDisplayName() const { return _displayName; }
+	virtual Common::String getName() const { return _displayName; }
+	virtual Common::String getPath() const { return _path; }
+	virtual bool isDirectory() const { return _isDirectory; }
+	virtual bool isReadable() const;
+	virtual bool isWritable() const;
+
+	virtual AbstractFSNode *getChild(const Common::String &n) const;
+	virtual bool getChildren(AbstractFSList &list, ListMode mode, bool hidden) const;
+	virtual AbstractFSNode *getParent() const;
+
+	virtual Common::SeekableReadStream *createReadStream();
+	virtual Common::WriteStream *createWriteStream();
+	virtual bool create(bool isDirectoryFlag);
+
+private:
+	/**
+	 * Converts a Unix style path to a RISC OS style path.
+	 *
+	 * @param str Unix style path to convert.
+	 * @return RISC OS style path.
+	 */
+	static Common::String toRISCOS(Common::String &path);
+
+	/**
+	 * Converts a RISC OS style path to a Unix style path.
+	 *
+	 * @param str RISC OS style path to convert.
+	 * @return Unix style path.
+	 */
+	static Common::String toUnix(Common::String &path);
+
+};
+
+namespace Riscos {
+
+/**
+ * Assure that a directory path exists.
+ *
+ * @param dir The path which is required to exist.
+ * @param prefix An (optional) prefix which should not be created if non existent.
+ *               prefix is prepended to dir if supplied.
+ * @return true in case the directoy exists (or was created), false otherwise.
+ */
+bool assureDirectoryExists(const Common::String &dir, const char *prefix = nullptr);
+
+} // End of namespace RISCOS
+
+#endif