diff --git a/libc/kernel/common/asm-generic/errno.h b/libc/kernel/common/asm-generic/errno.h
index 11dd00f..1ef9ba9 100644
--- a/libc/kernel/common/asm-generic/errno.h
+++ b/libc/kernel/common/asm-generic/errno.h
@@ -7,113 +7,138 @@
  ***   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_GENERIC_ERRNO_H
 #define _ASM_GENERIC_ERRNO_H
-
 #include <asm-generic/errno-base.h>
-
 #define EDEADLK 35  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ENAMETOOLONG 36  
 #define ENOLCK 37  
 #define ENOSYS 38  
 #define ENOTEMPTY 39  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ELOOP 40  
 #define EWOULDBLOCK EAGAIN  
 #define ENOMSG 42  
 #define EIDRM 43  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECHRNG 44  
 #define EL2NSYNC 45  
 #define EL3HLT 46  
 #define EL3RST 47  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ELNRNG 48  
 #define EUNATCH 49  
 #define ENOCSI 50  
 #define EL2HLT 51  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EBADE 52  
 #define EBADR 53  
 #define EXFULL 54  
 #define ENOANO 55  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EBADRQC 56  
 #define EBADSLT 57  
-
 #define EDEADLOCK EDEADLK
-
 #define EBFONT 59  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ENOSTR 60  
 #define ENODATA 61  
 #define ETIME 62  
 #define ENOSR 63  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ENONET 64  
 #define ENOPKG 65  
 #define EREMOTE 66  
 #define ENOLINK 67  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EADV 68  
 #define ESRMNT 69  
 #define ECOMM 70  
 #define EPROTO 71  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EMULTIHOP 72  
 #define EDOTDOT 73  
 #define EBADMSG 74  
 #define EOVERFLOW 75  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ENOTUNIQ 76  
 #define EBADFD 77  
 #define EREMCHG 78  
 #define ELIBACC 79  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ELIBBAD 80  
 #define ELIBSCN 81  
 #define ELIBMAX 82  
 #define ELIBEXEC 83  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EILSEQ 84  
 #define ERESTART 85  
 #define ESTRPIPE 86  
 #define EUSERS 87  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ENOTSOCK 88  
 #define EDESTADDRREQ 89  
 #define EMSGSIZE 90  
 #define EPROTOTYPE 91  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ENOPROTOOPT 92  
 #define EPROTONOSUPPORT 93  
 #define ESOCKTNOSUPPORT 94  
 #define EOPNOTSUPP 95  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EPFNOSUPPORT 96  
 #define EAFNOSUPPORT 97  
 #define EADDRINUSE 98  
 #define EADDRNOTAVAIL 99  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ENETDOWN 100  
 #define ENETUNREACH 101  
 #define ENETRESET 102  
 #define ECONNABORTED 103  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECONNRESET 104  
 #define ENOBUFS 105  
 #define EISCONN 106  
 #define ENOTCONN 107  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ESHUTDOWN 108  
 #define ETOOMANYREFS 109  
 #define ETIMEDOUT 110  
 #define ECONNREFUSED 111  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EHOSTDOWN 112  
 #define EHOSTUNREACH 113  
 #define EALREADY 114  
 #define EINPROGRESS 115  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ESTALE 116  
 #define EUCLEAN 117  
 #define ENOTNAM 118  
 #define ENAVAIL 119  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EISNAM 120  
 #define EREMOTEIO 121  
 #define EDQUOT 122  
-
 #define ENOMEDIUM 123  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EMEDIUMTYPE 124  
 #define ECANCELED 125  
 #define ENOKEY 126  
 #define EKEYEXPIRED 127  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EKEYREVOKED 128  
 #define EKEYREJECTED 129  
-
 #define EOWNERDEAD 130  
 #define ENOTRECOVERABLE 131  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif