--- /dev/null
+/*
+ * Copyright 2016 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License, version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * 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 LTTNG_COMMON_FILTER_H
+#define LTTNG_COMMON_FILTER_H
+
+#include <common/sessiond-comm/sessiond-comm.h>
+
+struct bytecode_symbol_iterator;
+
+/*
+ * Create an iterator on a bytecode's symbols. The iterator points to the
+ * first element after creation.
+ */
+struct bytecode_symbol_iterator *bytecode_symbol_iterator_create(
+ struct lttng_filter_bytecode *bytecode);
+
+/*
+ * Advance iterator of one element.
+ *
+ * Returns 0 if a next element exists or a negative value at the end.
+ */
+int bytecode_symbol_iterator_next(struct bytecode_symbol_iterator *it);
+
+int bytecode_symbol_iterator_get_type(struct bytecode_symbol_iterator *it);
+
+const char *bytecode_symbol_iterator_get_name(
+ struct bytecode_symbol_iterator *it);
+
+void bytecode_symbol_iterator_destroy(struct bytecode_symbol_iterator *it);
+
+#endif /* LTTNG_COMMON_FILTER_H */