diff --git a/libntfs/lcnalloc.c b/libntfs/lcnalloc.c
index e69de29b..043dea09 100644
--- a/libntfs/lcnalloc.c
+++ b/libntfs/lcnalloc.c
@@ -0,0 +1,82 @@
+/*
+ * lcnalloc.c - Cluster (de)allocation code. Part of the Linux-NTFS project.
+ *
+ * Copyright (c) 2002 Anton Altaparmakov
+ *
+ * This program/include file 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/include file 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 (in the main directory of the Linux-NTFS
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+//#include <stdio.h>
+//#include <string.h>
+//#include <stdlib.h>
+
+#include <errno.h>
+
+#include "types.h"
+#include "attrib.h"
+#include "runlist.h"
+#include "volume.h"
+#include "lcnalloc.h"
+
+//#include "debug.h"
+
+/**
+ * ntfs_cluster_alloc - allocate clusters on an ntfs volume
+ * @vol:	mounted ntfs volume on which to allocate the clusters
+ * @count:	number of clusters to allocate
+ * @start_lcn:	starting lcn at which to allocate the clusters (or -1 if none)
+ *
+ * Allocate @count clusters starting at cluster @start_lcn or at the current
+ * allocator position if @start_lcn is -1, from the mounted ntfs volume @vol.
+ *
+ * On success return a runlist describing the allocated cluster(s).
+ *
+ * On error return NULL with errno set to the error code.
+ */
+runlist *ntfs_cluster_alloc(ntfs_volume *vol, s64 count, LCN start_lcn)
+{
+	if (!vol || count < 0 || start_lcn < 0 || !vol->lcnbmp_na) {
+		errno = EINVAL;
+		return NULL;
+	}
+
+	errno = ENOTSUP;
+	return NULL;
+}
+
+/**
+ * ntfs_cluster_free - free clusters on an ntfs volume
+ * @vol:	mounted ntfs volume on which to free the clusters
+ * @rl:		runlist describing the clusters to free
+ * @start_vcn:	starting relative vcn into @rl at which to free the clusters
+ * @count:	number of clusters to free
+ *
+ * Allocate @count clusters starting at cluster @start_lcn or at the current
+ * allocator position if @start_lcn is -1, from the mounted ntfs volume @vol.
+ *
+ * On success return 0 and -1 on error with errno set to the error code.
+ */
+int ntfs_cluster_free(ntfs_volume *vol, runlist *rl, VCN start_vcn, s64 count)
+{
+	if (!vol || !rl || start_vcn < 0 || count < 0 || !vol->lcnbmp_na) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	errno = ENOTSUP;
+	return -1;
+}
+