diff --git a/libc/kernel/common/asm-generic/fcntl.h b/libc/kernel/common/asm-generic/fcntl.h
new file mode 100644
index 0000000..a53b536
--- /dev/null
+++ b/libc/kernel/common/asm-generic/fcntl.h
@@ -0,0 +1,148 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   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.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _ASM_GENERIC_FCNTL_H
+#define _ASM_GENERIC_FCNTL_H
+
+#include <linux/types.h>
+
+#define O_ACCMODE 00000003
+#define O_RDONLY 00000000
+#define O_WRONLY 00000001
+#define O_RDWR 00000002
+#ifndef O_CREAT
+#define O_CREAT 00000100  
+#endif
+#ifndef O_EXCL
+#define O_EXCL 00000200  
+#endif
+#ifndef O_NOCTTY
+#define O_NOCTTY 00000400  
+#endif
+#ifndef O_TRUNC
+#define O_TRUNC 00001000  
+#endif
+#ifndef O_APPEND
+#define O_APPEND 00002000
+#endif
+#ifndef O_NONBLOCK
+#define O_NONBLOCK 00004000
+#endif
+#ifndef O_SYNC
+#define O_SYNC 00010000
+#endif
+#ifndef FASYNC
+#define FASYNC 00020000  
+#endif
+#ifndef O_DIRECT
+#define O_DIRECT 00040000  
+#endif
+#ifndef O_LARGEFILE
+#define O_LARGEFILE 00100000
+#endif
+#ifndef O_DIRECTORY
+#define O_DIRECTORY 00200000  
+#endif
+#ifndef O_NOFOLLOW
+#define O_NOFOLLOW 00400000  
+#endif
+#ifndef O_NOATIME
+#define O_NOATIME 01000000
+#endif
+#ifndef O_NDELAY
+#define O_NDELAY O_NONBLOCK
+#endif
+
+#define F_DUPFD 0  
+#define F_GETFD 1  
+#define F_SETFD 2  
+#define F_GETFL 3  
+#define F_SETFL 4  
+#ifndef F_GETLK
+#define F_GETLK 5
+#define F_SETLK 6
+#define F_SETLKW 7
+#endif
+#ifndef F_SETOWN
+#define F_SETOWN 8  
+#define F_GETOWN 9  
+#endif
+#ifndef F_SETSIG
+#define F_SETSIG 10  
+#define F_GETSIG 11  
+#endif
+
+#define FD_CLOEXEC 1  
+
+#ifndef F_RDLCK
+#define F_RDLCK 0
+#define F_WRLCK 1
+#define F_UNLCK 2
+#endif
+
+#ifndef F_EXLCK
+#define F_EXLCK 4  
+#define F_SHLCK 8  
+#endif
+
+#ifndef F_INPROGRESS
+#define F_INPROGRESS 16
+#endif
+
+#define LOCK_SH 1  
+#define LOCK_EX 2  
+#define LOCK_NB 4  
+#define LOCK_UN 8  
+
+#define LOCK_MAND 32  
+#define LOCK_READ 64  
+#define LOCK_WRITE 128  
+#define LOCK_RW 192  
+
+#define F_LINUX_SPECIFIC_BASE 1024
+
+#ifndef HAVE_ARCH_STRUCT_FLOCK
+#ifndef __ARCH_FLOCK_PAD
+#define __ARCH_FLOCK_PAD
+#endif
+
+struct flock {
+ short l_type;
+ short l_whence;
+ off_t l_start;
+ off_t l_len;
+ pid_t l_pid;
+ __ARCH_FLOCK_PAD
+};
+#endif
+
+#ifndef F_GETLK64
+#define F_GETLK64 12  
+#define F_SETLK64 13
+#define F_SETLKW64 14
+#endif
+
+#ifndef HAVE_ARCH_STRUCT_FLOCK64
+#ifndef __ARCH_FLOCK64_PAD
+#define __ARCH_FLOCK64_PAD
+#endif
+
+struct flock64 {
+ short l_type;
+ short l_whence;
+ loff_t l_start;
+ loff_t l_len;
+ pid_t l_pid;
+ __ARCH_FLOCK64_PAD
+};
+#endif
+
+#endif