--- /dev/null
+/*
+ * Copyright (C) 2020 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#ifndef LTTNG_LOG_LEVEL_RULE_INTERNAL_H
+#define LTTNG_LOG_LEVEL_RULE_INTERNAL_H
+
+#include <stdint.h>
+
+#include <common/buffer-view.hpp>
+#include <common/dynamic-array.hpp>
+#include <common/macros.hpp>
+#include <common/payload-view.hpp>
+#include <common/payload.hpp>
+#include <lttng/event.h>
+#include <lttng/log-level-rule.h>
+#include <lttng/lttng-error.h>
+
+struct mi_writer;
+
+/*
+ * For now only a single backing struct is used for both type of log level
+ * rule (exactly, as_severe) since both only have require "level" as property.
+ */
+struct lttng_log_level_rule {
+ enum lttng_log_level_rule_type type;
+ int level;
+};
+
+struct lttng_log_level_rule_comm {
+ /* enum lttng_log_level_rule_type */
+ int8_t type;
+ int32_t level;
+};
+
+ssize_t lttng_log_level_rule_create_from_payload(
+ struct lttng_payload_view *view,
+ struct lttng_log_level_rule **rule);
+
+int lttng_log_level_rule_serialize(const struct lttng_log_level_rule *rule,
+ struct lttng_payload *payload);
+
+bool lttng_log_level_rule_is_equal(const struct lttng_log_level_rule *a,
+ const struct lttng_log_level_rule *b);
+
+struct lttng_log_level_rule *lttng_log_level_rule_copy(
+ const struct lttng_log_level_rule *source);
+
+void lttng_log_level_rule_to_loglevel(
+ const struct lttng_log_level_rule *log_level_rule,
+ enum lttng_loglevel_type *loglevel_type,
+ int *loglevel_value);
+
+unsigned long lttng_log_level_rule_hash(
+ const struct lttng_log_level_rule *log_level_rule);
+
+enum lttng_error_code lttng_log_level_rule_mi_serialize(
+ const struct lttng_log_level_rule *rule,
+ struct mi_writer *writer);
+
+#endif /* LTTNG_LOG_LEVEL_RULE_INTERNAL_H */