diff --git a/src/config.hpp b/src/config.hpp
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+/**
+ * @brief Logger configuration.
+ *
+ * This file is part of HostLogger project.
+ *
+ * Copyright (c) 2018 YADRO
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+/** @struct Config
+ *  @brief Represent the configuration of the logger.
+ */
+struct Config
+{
+    /** @brief Path to write log files. */
+    const char* path;
+    /** @brief Storage limit (message count). */
+    int storageSizeLimit;
+    /** @brief Storage limit (max time). */
+    int storageTimeLimit;
+    /** @brief Flush policy: save logs every flushPeriod hours. */
+    int flushPeriod;
+    /** @brief Rotation limit (max files to store). */
+    int rotationLimit;
+};
+
+/** @brief Global logger configuration instance. */
+extern Config loggerConfig;