+/**@brief Change file owner and group.
+ *
+ * @param path Path to file/dir/link.
+ * @param uid User id.
+ * @param gid Group id.
+ *
+ * @return Standard error code.*/
+int ext4_owner_set(const char *path, uint32_t uid, uint32_t gid);
+
+/**@brief Get file/directory/link owner and group.
+ *
+ * @param path Path to file/dir/link.
+ * @param uid User id.
+ * @param gid Group id.
+ *
+ * @return Standard error code.*/
+int ext4_owner_get(const char *path, uint32_t *uid, uint32_t *gid);
+
+/**@brief Set file/directory/link access time.
+ *
+ * @param path Path to file/dir/link.
+ * @param atime Access timestamp.
+ *
+ * @return Standard error code.*/
+int ext4_atime_set(const char *path, uint32_t atime);
+
+/**@brief Set file/directory/link modify time.
+ *
+ * @param path Path to file/dir/link.
+ * @param mtime Modify timestamp.
+ *
+ * @return Standard error code.*/
+int ext4_mtime_set(const char *path, uint32_t mtime);
+
+/**@brief Set file/directory/link change time.
+ *
+ * @param path Path to file/dir/link.
+ * @param ctime Change timestamp.
+ *
+ * @return Standard error code.*/
+int ext4_ctime_set(const char *path, uint32_t ctime);
+
+/**@brief Get file/directory/link access time.
+ *
+ * @param path Path to file/dir/link.
+ * @param atime Access timestamp.
+ *
+ * @return Standard error code.*/
+int ext4_atime_get(const char *path, uint32_t *atime);
+
+/**@brief Get file/directory/link modify time.
+ *
+ * @param path Path to file/dir/link.
+ * @param mtime Modify timestamp.
+ *
+ * @return Standard error code.*/
+int ext4_mtime_get(const char *path, uint32_t *mtime);
+
+/**@brief Get file/directory/link change time.
+ *
+ * @param path Pathto file/dir/link.
+ * @param ctime Change timestamp.
+ *