initial import

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diff --git a/io/fcntl.h b/io/fcntl.h
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+/* Copyright (C) 1991, 1992, 1994 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+/*
+ *	POSIX Standard: 6.5 File Control Operations	<fcntl.h>
+ */
+
+#ifndef	_FCNTL_H
+
+#define	_FCNTL_H	1
+#include <features.h>
+
+/* This must be early so <fcntlbits.h> can define types winningly.  */
+__BEGIN_DECLS
+
+/* Get the definitions of O_*, F_*, FD_*: all the
+   numbers and flag bits for `open', `fcntl', et al.  */
+#include <fcntlbits.h>
+
+#ifdef	__USE_MISC
+#ifndef	R_OK			/* Verbatim from <unistd.h>.  Ugh.  */
+/* Values for the second argument to access.
+   These may be OR'd together.  */
+#define	R_OK	4		/* Test for read permission.  */
+#define	W_OK	2		/* Test for write permission.  */
+#define	X_OK	1		/* Test for execute permission.  */
+#define	F_OK	0		/* Test for existence.  */
+#endif
+#endif /* Use misc.  */
+
+
+/* Do the file control operation described by CMD on FD.
+   The remaining arguments are interpreted depending on CMD.  */
+extern int __fcntl __P ((int __fd, int __cmd, ...));
+extern int fcntl __P ((int __fd, int __cmd, ...));
+
+/* Open FILE and return a new file descriptor for it, or -1 on error.
+   OFLAG determines the type of access used.  If O_CREAT is on OFLAG,
+   the third argument is taken as a `mode_t', the mode of the created file.  */
+extern int __open __P ((__const char *__file, int __oflag,...));
+extern int open __P ((__const char *__file, int __oflag,...));
+
+/* Create and open FILE, with mode MODE.
+   This takes an `int' MODE argument because that is
+   what `mode_t' will be widened to.  */
+extern int creat __P ((__const char *__file, __mode_t __mode));
+
+#ifdef	__OPTIMIZE__
+#define	creat(file, m)	__open((file), O_WRONLY|O_CREAT|O_TRUNC, (m))
+#endif /* Optimizing.  */
+
+#if defined (__USE_MISC) && !defined (F_LOCK)
+/* NOTE: These declarations also appear in <unistd.h>; be sure to keep both
+   files consistent.  Some systems have them there and some here, and some
+   software depends on the macros being defined without including both.  */
+
+/* `lockf' is a simpler interface to the locking facilities of `fcntl'.
+   LEN is always relative to the current file position.
+   The CMD argument is one of the following.  */
+
+#define F_ULOCK 0       /* Unlock a previously locked region.  */
+#define F_LOCK  1       /* Lock a region for exclusive use.  */ 
+#define F_TLOCK 2       /* Test and lock a region for exclusive use.  */
+#define F_TEST  3       /* Test a region for other processes locks.  */
+
+extern int lockf __P ((int __fd, int __cmd, __off_t __len));
+#endif
+
+__END_DECLS
+
+#endif /* fcntl.h  */