diff --git a/libc/kernel/uapi/asm-generic/fcntl.h b/libc/kernel/uapi/asm-generic/fcntl.h
new file mode 100644
index 0000000..d3d5465
--- /dev/null
+++ b/libc/kernel/uapi/asm-generic/fcntl.h
@@ -0,0 +1,201 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   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_FCNTL_H
+#define _ASM_GENERIC_FCNTL_H
+#include <linux/types.h>
+#define O_ACCMODE 00000003
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define O_RDONLY 00000000
+#define O_WRONLY 00000001
+#define O_RDWR 00000002
+#ifndef O_CREAT
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define O_CREAT 00000100
+#endif
+#ifndef O_EXCL
+#define O_EXCL 00000200
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif
+#ifndef O_NOCTTY
+#define O_NOCTTY 00000400
+#endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#ifndef O_TRUNC
+#define O_TRUNC 00001000
+#endif
+#ifndef O_APPEND
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define O_APPEND 00002000
+#endif
+#ifndef O_NONBLOCK
+#define O_NONBLOCK 00004000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif
+#ifndef O_DSYNC
+#define O_DSYNC 00010000
+#endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#ifndef FASYNC
+#define FASYNC 00020000
+#endif
+#ifndef O_DIRECT
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define O_DIRECT 00040000
+#endif
+#ifndef O_LARGEFILE
+#define O_LARGEFILE 00100000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif
+#ifndef O_DIRECTORY
+#define O_DIRECTORY 00200000
+#endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#ifndef O_NOFOLLOW
+#define O_NOFOLLOW 00400000
+#endif
+#ifndef O_NOATIME
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define O_NOATIME 01000000
+#endif
+#ifndef O_CLOEXEC
+#define O_CLOEXEC 02000000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif
+#ifndef O_SYNC
+#define __O_SYNC 04000000
+#define O_SYNC (__O_SYNC|O_DSYNC)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif
+#ifndef O_PATH
+#define O_PATH 010000000
+#endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#ifndef __O_TMPFILE
+#define __O_TMPFILE 020000000
+#endif
+#define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define O_TMPFILE_MASK (__O_TMPFILE | O_DIRECTORY | O_CREAT)
+#ifndef O_NDELAY
+#define O_NDELAY O_NONBLOCK
+#endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define F_DUPFD 0
+#define F_GETFD 1
+#define F_SETFD 2
+#define F_GETFL 3
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define F_SETFL 4
+#ifndef F_GETLK
+#define F_GETLK 5
+#define F_SETLK 6
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define F_SETLKW 7
+#endif
+#ifndef F_SETOWN
+#define F_SETOWN 8
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define F_GETOWN 9
+#endif
+#ifndef F_SETSIG
+#define F_SETSIG 10
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define F_GETSIG 11
+#endif
+#ifndef F_GETLK64
+#define F_GETLK64 12
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define F_SETLK64 13
+#define F_SETLKW64 14
+#endif
+#ifndef F_SETOWN_EX
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define F_SETOWN_EX 15
+#define F_GETOWN_EX 16
+#endif
+#ifndef F_GETOWNER_UIDS
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define F_GETOWNER_UIDS 17
+#endif
+#define F_OWNER_TID 0
+#define F_OWNER_PID 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define F_OWNER_PGRP 2
+struct f_owner_ex {
+ int type;
+ __kernel_pid_t pid;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+};
+#define FD_CLOEXEC 1
+#ifndef F_RDLCK
+#define F_RDLCK 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define F_WRLCK 1
+#define F_UNLCK 2
+#endif
+#ifndef F_EXLCK
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define F_EXLCK 4
+#define F_SHLCK 8
+#endif
+#define LOCK_SH 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define LOCK_EX 2
+#define LOCK_NB 4
+#define LOCK_UN 8
+#define LOCK_MAND 32
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define LOCK_READ 64
+#define LOCK_WRITE 128
+#define LOCK_RW 192
+#define F_LINUX_SPECIFIC_BASE 1024
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#ifndef HAVE_ARCH_STRUCT_FLOCK
+#ifndef __ARCH_FLOCK_PAD
+#define __ARCH_FLOCK_PAD
+#endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+struct flock {
+ short l_type;
+ short l_whence;
+ __kernel_off_t l_start;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __kernel_off_t l_len;
+ __kernel_pid_t l_pid;
+ __ARCH_FLOCK_PAD
+};
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif
+#ifndef HAVE_ARCH_STRUCT_FLOCK64
+#ifndef __ARCH_FLOCK64_PAD
+#define __ARCH_FLOCK64_PAD
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif
+struct flock64 {
+ short l_type;
+ short l_whence;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __kernel_loff_t l_start;
+ __kernel_loff_t l_len;
+ __kernel_pid_t l_pid;
+ __ARCH_FLOCK64_PAD
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+};
+#endif
+#endif