diff --git a/libc/kernel/arch-x86/asm/termios.h b/libc/kernel/arch-x86/asm/termios.h
index 6542c78..2aca2fc 100644
--- a/libc/kernel/arch-x86/asm/termios.h
+++ b/libc/kernel/arch-x86/asm/termios.h
@@ -7,61 +7,94 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_X86_TERMIOS_H
 #define _ASM_X86_TERMIOS_H
-
 #include <asm/termbits.h>
 #include <asm/ioctls.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct winsize {
  unsigned short ws_row;
  unsigned short ws_col;
  unsigned short ws_xpixel;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short ws_ypixel;
 };
-
 #define NCC 8
 struct termio {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short c_iflag;
  unsigned short c_oflag;
  unsigned short c_cflag;
  unsigned short c_lflag;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned char c_line;
  unsigned char c_cc[NCC];
 };
-
 #define TIOCM_LE 0x001
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCM_DTR 0x002
 #define TIOCM_RTS 0x004
 #define TIOCM_ST 0x008
 #define TIOCM_SR 0x010
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCM_CTS 0x020
 #define TIOCM_CAR 0x040
 #define TIOCM_RNG 0x080
 #define TIOCM_DSR 0x100
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCM_CD TIOCM_CAR
 #define TIOCM_RI TIOCM_RNG
 #define TIOCM_OUT1 0x2000
 #define TIOCM_OUT2 0x4000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TIOCM_LOOP 0x8000
-
 #define N_TTY 0
 #define N_SLIP 1
 #define N_MOUSE 2
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define N_PPP 3
+#define N_STRIP 4
+#define N_AX25 5
+#define N_X25 6
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define N_6PACK 7
+#define N_MASC 8
+#define N_R3964 9
+#define N_PROFIBUS_FDL 10
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define N_IRDA 11
+#define N_SMSBLOCK 12
+#define N_HDLC 13
+#define N_SYNC_PPP 14
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define N_HCI 15
+#define N_TTY 0
+#define N_SLIP 1
+#define N_MOUSE 2
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define N_PPP 3
 #define N_STRIP 4
 #define N_AX25 5
 #define N_X25 6  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define N_6PACK 7
 #define N_MASC 8  
 #define N_R3964 9  
 #define N_PROFIBUS_FDL 10  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define N_IRDA 11  
 #define N_SMSBLOCK 12  
 #define N_HDLC 13  
 #define N_SYNC_PPP 14
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define N_HCI 15  
-
 #endif