diff --git a/Makefile.am b/Makefile.am
index b65b308..acec555 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -75,7 +75,11 @@ libisofs_libisofs_la_SOURCES = \
 	libisofs/rockridge.h \
 	libisofs/rockridge.c \
 	libisofs/joliet.c \
-	libisofs/joliet.h 
+	libisofs/joliet.h \
+	libisofs/exclude.c \
+	libisofs/exclude.h \
+	libisofs/hash.h \
+	libisofs/hash.c 
 
 libinclude_HEADERS = \
 	libburn/libburn.h \
diff --git a/libisofs/libisofs.h b/libisofs/libisofs.h
index 8bfdab3..fedf0f9 100755
--- a/libisofs/libisofs.h
+++ b/libisofs/libisofs.h
@@ -117,6 +117,26 @@ struct iso_tree_node *iso_tree_add_node(struct iso_tree_node *parent,
 struct iso_tree_node *iso_tree_radd_dir(struct iso_tree_node *parent,
 					const char *path);
 
+
+/**
+ * Add the path of a file or directory to ignore when adding a directory recursively.
+ *
+ * \param path The path, on the local filesystem, of the file.
+ */
+void iso_exclude_add_path(const char *path);
+
+/**
+ * Remove a path that was set to be ignored when adding a directory recusively.
+ * 
+ * \param path The path, on the local filesystem, of the file.
+ */
+void iso_exclude_remove_path(const char *path);
+
+/**
+ * Remove all paths that were set to be ignored when adding a directory recusively.
+ */
+void iso_exclude_empty(void);
+
 /**
  * Creates a new, empty directory on the volume.
  *
diff --git a/libisofs/tree.c b/libisofs/tree.c
index e4b7ef7..08a1bbf 100755
--- a/libisofs/tree.c
+++ b/libisofs/tree.c
@@ -22,6 +22,7 @@
 #include "tree.h"
 #include "util.h"
 #include "volume.h"
+#include "exclude.h"
 
 static void
 set_default_stat(struct stat *s)
@@ -157,6 +158,11 @@ iso_tree_radd_dir (struct iso_tree_node *parent, const char *path)
 			continue;
 
 		sprintf(child, "%s/%s", path, ent->d_name);
+
+		/* see if this child is excluded. */
+		if (iso_exclude_lookup(child))
+			continue;
+
 		iso_tree_radd_dir(new, child);
 	}
 	closedir(dir);