diff --git a/libc/kernel/common/linux/mtio.h b/libc/kernel/common/linux/mtio.h
index 47a6e2b..c2901ba 100644
--- a/libc/kernel/common/linux/mtio.h
+++ b/libc/kernel/common/linux/mtio.h
@@ -7,253 +7,272 @@
  ***   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 _LINUX_MTIO_H
 #define _LINUX_MTIO_H
-
 #include <linux/types.h>
 #include <linux/ioctl.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/qic117.h>
-
 struct mtop {
  short mt_op;
  int mt_count;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 #define MTRESET 0  
 #define MTFSF 1  
 #define MTBSF 2  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MTFSR 3  
 #define MTBSR 4  
 #define MTWEOF 5  
 #define MTREW 6  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MTOFFL 7  
 #define MTNOP 8  
 #define MTRETEN 9  
 #define MTBSFM 10  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MTFSFM 11  
 #define MTEOM 12  
 #define MTERASE 13  
-
 #define MTRAS1 14  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MTRAS2 15  
 #define MTRAS3 16  
-
 #define MTSETBLK 20  
 #define MTSETDENSITY 21  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MTSEEK 22  
 #define MTTELL 23  
 #define MTSETDRVBUFFER 24  
-
 #define MTFSS 25  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MTBSS 26  
 #define MTWSM 27  
-
 #define MTLOCK 28  
 #define MTUNLOCK 29  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MTLOAD 30  
 #define MTUNLOAD 31  
 #define MTCOMPRESSION 32 
 #define MTSETPART 33  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MTMKPART 34  
-
 struct mtget {
  long mt_type;
  long mt_resid;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long mt_dsreg;
  long mt_gstat;
  long mt_erreg;
-
  __kernel_daddr_t mt_fileno;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __kernel_daddr_t mt_blkno;
 };
-
 #define MT_ISUNKNOWN 0x01
 #define MT_ISQIC02 0x02  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MT_ISWT5150 0x03  
 #define MT_ISARCHIVE_5945L2 0x04  
 #define MT_ISCMSJ500 0x05  
 #define MT_ISTDC3610 0x06  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MT_ISARCHIVE_VP60I 0x07  
 #define MT_ISARCHIVE_2150L 0x08  
 #define MT_ISARCHIVE_2060L 0x09  
 #define MT_ISARCHIVESC499 0x0A  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MT_ISQIC02_ALL_FEATURES 0x0F  
 #define MT_ISWT5099EEN24 0x11  
 #define MT_ISTEAC_MT2ST 0x12  
 #define MT_ISEVEREX_FT40A 0x32  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MT_ISDDS1 0x51  
 #define MT_ISDDS2 0x52  
 #define MT_ISONSTREAM_SC 0x61  
 #define MT_ISSCSI1 0x71  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MT_ISSCSI2 0x72  
-
 #define MT_ISFTAPE_UNKNOWN 0x800000  
 #define MT_ISFTAPE_FLAG 0x800000
-
 struct mt_tape_info {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long t_type;
  char *t_name;
 };
-
 #define MT_TAPE_INFO {   {MT_ISUNKNOWN, "Unknown type of tape device"},   {MT_ISQIC02, "Generic QIC-02 tape streamer"},   {MT_ISWT5150, "Wangtek 5150, QIC-150"},   {MT_ISARCHIVE_5945L2, "Archive 5945L-2"},   {MT_ISCMSJ500, "CMS Jumbo 500"},   {MT_ISTDC3610, "Tandberg TDC 3610, QIC-24"},   {MT_ISARCHIVE_VP60I, "Archive VP60i, QIC-02"},   {MT_ISARCHIVE_2150L, "Archive Viper 2150L"},   {MT_ISARCHIVE_2060L, "Archive Viper 2060L"},   {MT_ISARCHIVESC499, "Archive SC-499 QIC-36 controller"},   {MT_ISQIC02_ALL_FEATURES, "Generic QIC-02 tape, all features"},   {MT_ISWT5099EEN24, "Wangtek 5099-een24, 60MB"},   {MT_ISTEAC_MT2ST, "Teac MT-2ST 155mb data cassette drive"},   {MT_ISEVEREX_FT40A, "Everex FT40A, QIC-40"},   {MT_ISONSTREAM_SC, "OnStream SC-, DI-, DP-, or USB tape drive"},   {MT_ISSCSI1, "Generic SCSI-1 tape"},   {MT_ISSCSI2, "Generic SCSI-2 tape"},   {0, NULL}  }
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct mtpos {
  long mt_blkno;
 };
-
 struct mtvolinfo {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int mt_volno;
  unsigned int mt_blksz;
  unsigned int mt_rawsize;
  unsigned int mt_size;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int mt_cmpr:1;
 };
-
 #define MT_FT_RD_SINGLE 0
 #define MT_FT_RD_AHEAD 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MT_FT_WR_ASYNC 0  
 #define MT_FT_WR_MULTI 1  
 #define MT_FT_WR_SINGLE 2  
 #define MT_FT_WR_DELETE 3  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct mtftseg
 {
  unsigned mt_segno;
  unsigned mt_mode;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int mt_result;
  void __user *mt_data;
 };
-
 struct mttapesize {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long mt_capacity;
  unsigned long mt_used;
 };
-
 #define FTFMT_SET_PARMS 1  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FTFMT_GET_PARMS 2  
 #define FTFMT_FORMAT_TRACK 3  
 #define FTFMT_STATUS 4  
 #define FTFMT_VERIFY 5  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct ftfmtparms {
  unsigned char ft_qicstd;
  unsigned char ft_fmtcode;
  unsigned char ft_fhm;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned char ft_ftm;
  unsigned short ft_spt;
  unsigned short ft_tpc;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct ftfmttrack {
  unsigned int ft_track;
  unsigned char ft_gap3;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct ftfmtstatus {
  unsigned int ft_segment;
 };
-
 struct ftfmtverify {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int ft_segment;
  unsigned long ft_bsm;
 };
-
 struct mtftformat {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int fmt_op;
  union fmt_arg {
  struct ftfmtparms fmt_parms;
  struct ftfmttrack fmt_track;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct ftfmtstatus fmt_status;
  struct ftfmtverify fmt_verify;
  } fmt_arg;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct mtftcmd {
  unsigned int ft_wait_before;
  qic117_cmd_t ft_cmd;
  unsigned char ft_parm_cnt;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned char ft_parms[3];
  unsigned int ft_result_bits;
  unsigned int ft_result;
  unsigned int ft_wait_after;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int ft_status;
  int ft_error;
 };
-
 #define MTIOCTOP _IOW('m', 1, struct mtop)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MTIOCGET _IOR('m', 2, struct mtget)  
 #define MTIOCPOS _IOR('m', 3, struct mtpos)  
-
 #define MTIOCGETCONFIG _IOR('m', 4, struct mtconfiginfo)  
 #define MTIOCSETCONFIG _IOW('m', 5, struct mtconfiginfo)  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MTIOCRDFTSEG _IOWR('m', 6, struct mtftseg)  
 #define MTIOCWRFTSEG _IOWR('m', 7, struct mtftseg)  
 #define MTIOCVOLINFO _IOR('m', 8, struct mtvolinfo)  
 #define MTIOCGETSIZE _IOR('m', 9, struct mttapesize) 
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MTIOCFTFORMAT _IOWR('m', 10, struct mtftformat)  
 #define MTIOCFTCMD _IOWR('m', 11, struct mtftcmd)  
-
 #define GMT_EOF(x) ((x) & 0x80000000)
 #define GMT_BOT(x) ((x) & 0x40000000)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define GMT_EOT(x) ((x) & 0x20000000)
 #define GMT_SM(x) ((x) & 0x10000000)  
 #define GMT_EOD(x) ((x) & 0x08000000)  
 #define GMT_WR_PROT(x) ((x) & 0x04000000)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define GMT_ONLINE(x) ((x) & 0x01000000)
 #define GMT_D_6250(x) ((x) & 0x00800000)
 #define GMT_D_1600(x) ((x) & 0x00400000)
 #define GMT_D_800(x) ((x) & 0x00200000)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define GMT_DR_OPEN(x) ((x) & 0x00040000)  
-
 #define GMT_IM_REP_EN(x) ((x) & 0x00010000)  
 #define GMT_CLN(x) ((x) & 0x00008000)  
-
 #define MT_ST_BLKSIZE_SHIFT 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MT_ST_BLKSIZE_MASK 0xffffff
 #define MT_ST_DENSITY_SHIFT 24
 #define MT_ST_DENSITY_MASK 0xff000000
-
 #define MT_ST_SOFTERR_SHIFT 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MT_ST_SOFTERR_MASK 0xffff
-
 #define MT_ST_OPTIONS 0xf0000000
 #define MT_ST_BOOLEANS 0x10000000
 #define MT_ST_SETBOOLEANS 0x30000000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MT_ST_CLEARBOOLEANS 0x40000000
 #define MT_ST_WRITE_THRESHOLD 0x20000000
 #define MT_ST_DEF_BLKSIZE 0x50000000
 #define MT_ST_DEF_OPTIONS 0x60000000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MT_ST_TIMEOUTS 0x70000000
 #define MT_ST_SET_TIMEOUT (MT_ST_TIMEOUTS | 0x000000)
 #define MT_ST_SET_LONG_TIMEOUT (MT_ST_TIMEOUTS | 0x100000)
 #define MT_ST_SET_CLN 0x80000000
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MT_ST_BUFFER_WRITES 0x1
 #define MT_ST_ASYNC_WRITES 0x2
 #define MT_ST_READ_AHEAD 0x4
 #define MT_ST_DEBUGGING 0x8
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MT_ST_TWO_FM 0x10
 #define MT_ST_FAST_MTEOM 0x20
 #define MT_ST_AUTO_LOCK 0x40
 #define MT_ST_DEF_WRITES 0x80
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MT_ST_CAN_BSR 0x100
 #define MT_ST_NO_BLKLIMS 0x200
 #define MT_ST_CAN_PARTITIONS 0x400
 #define MT_ST_SCSI2LOGICAL 0x800
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MT_ST_SYSV 0x1000
 #define MT_ST_NOWAIT 0x2000
-
 #define MT_ST_CLEAR_DEFAULT 0xfffff
 #define MT_ST_DEF_DENSITY (MT_ST_DEF_OPTIONS | 0x100000)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MT_ST_DEF_COMPRESSION (MT_ST_DEF_OPTIONS | 0x200000)
 #define MT_ST_DEF_DRVBUFFER (MT_ST_DEF_OPTIONS | 0x300000)
-
 #define MT_ST_HPLOADER_OFFSET 10000
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */