diff --git a/liblog/log_read.c b/liblog/log_read.c
index 379105f..47aa711 100644
--- a/liblog/log_read.c
+++ b/liblog/log_read.c
@@ -25,6 +25,17 @@
 #include <log/log.h>
 #include <log/logger.h>
 
+#include <sys/ioctl.h>
+
+#define __LOGGERIO     0xAE
+
+#define LOGGER_GET_LOG_BUF_SIZE    _IO(__LOGGERIO, 1) /* size of log */
+#define LOGGER_GET_LOG_LEN         _IO(__LOGGERIO, 2) /* used log len */
+#define LOGGER_GET_NEXT_ENTRY_LEN  _IO(__LOGGERIO, 3) /* next entry len */
+#define LOGGER_FLUSH_LOG           _IO(__LOGGERIO, 4) /* flush log */
+#define LOGGER_GET_VERSION         _IO(__LOGGERIO, 5) /* abi version */
+#define LOGGER_SET_VERSION         _IO(__LOGGERIO, 6) /* abi version */
+
 typedef char bool;
 #define false (const bool)0
 #define true (const bool)1