diff --git a/include/gdb/ChangeLog b/include/gdb/ChangeLog
index 33df7f27a..ce46172b3 100644
--- a/include/gdb/ChangeLog
+++ b/include/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2004-12-15  Hans-Peter Nilsson  <hp@axis.com>
+
+	* callback.h (CB_SYS_truncate, CB_SYS_ftruncate): New macros.
+
 2004-12-13  Hans-Peter Nilsson  <hp@axis.com>
 
 	* callback.h (struct host_callback_struct): New member lstat.
diff --git a/include/gdb/callback.h b/include/gdb/callback.h
index e5eb8d7dd..cb06e572a 100644
--- a/include/gdb/callback.h
+++ b/include/gdb/callback.h
@@ -193,6 +193,8 @@ extern host_callback default_callback;
 /* More standard syscalls.  */
 #define CB_SYS_lstat    19
 #define CB_SYS_rename	20
+#define CB_SYS_truncate	21
+#define CB_SYS_ftruncate 22
 
 /* Struct use to pass and return information necessary to perform a
    system call.  */