new file mode 100644
--- /dev/null
+++ b/readline/posixstat.h
@@ -0,0 +1,142 @@
+/* posixstat.h -- Posix stat(2) definitions for systems that
+   don't have them. */
+
+/* Copyright (C) 1987,1991 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 1, or (at your option)
+   any later version.
+
+   Bash 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 General Public
+   License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Bash; see the file COPYING.  If not, write to the Free
+   Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* This file should be included instead of <sys/stat.h>.
+   It relies on the local sys/stat.h to work though. */
+#if !defined (_POSIXSTAT_H_)
+#define _POSIXSTAT_H_
+
+#include <sys/stat.h>
+
+#if defined (STAT_MACROS_BROKEN)
+#  undef S_ISBLK
+#  undef S_ISCHR
+#  undef S_ISDIR
+#  undef S_ISFIFO
+#  undef S_ISREG
+#  undef S_ISLNK
+#endif /* STAT_MACROS_BROKEN */
+
+/* These are guaranteed to work only on isc386 */
+#if !defined (S_IFDIR) && !defined (S_ISDIR)
+#  define S_IFDIR 0040000
+#endif /* !S_IFDIR && !S_ISDIR */
+#if !defined (S_IFMT)
+#  define S_IFMT  0170000
+#endif /* !S_IFMT */
+
+/* Posix 1003.1 5.6.1.1 <sys/stat.h> file types */
+
+/* Some Posix-wannabe systems define _S_IF* macros instead of S_IF*, but
+   do not provide the S_IS* macros that Posix requires. */
+
+#if defined (_S_IFMT) && !defined (S_IFMT)
+#define S_IFMT _S_IFMT
+#endif
+#if defined (_S_IFIFO) && !defined (S_IFIFO)
+#define S_IFIFO _S_IFIFO
+#endif
+#if defined (_S_IFCHR) && !defined (S_IFCHR)
+#define S_IFCHR _S_IFCHR
+#endif
+#if defined (_S_IFDIR) && !defined (S_IFDIR)
+#define S_IFDIR _S_IFDIR
+#endif
+#if defined (_S_IFBLK) && !defined (S_IFBLK)
+#define S_IFBLK _S_IFBLK
+#endif
+#if defined (_S_IFREG) && !defined (S_IFREG)
+#define S_IFREG _S_IFREG
+#endif
+#if defined (_S_IFLNK) && !defined (S_IFLNK)
+#define S_IFLNK _S_IFLNK
+#endif
+#if defined (_S_IFSOCK) && !defined (S_IFSOCK)
+#define S_IFSOCK _S_IFSOCK
+#endif
+
+/* Test for each symbol individually and define the ones necessary (some
+   systems claiming Posix compatibility define some but not all). */
+
+#if defined (S_IFBLK) && !defined (S_ISBLK)
+#define	S_ISBLK(m)	(((m)&S_IFMT) == S_IFBLK)	/* block device */
+#endif
+
+#if defined (S_IFCHR) && !defined (S_ISCHR)
+#define	S_ISCHR(m)	(((m)&S_IFMT) == S_IFCHR)	/* character device */
+#endif
+
+#if defined (S_IFDIR) && !defined (S_ISDIR)
+#define	S_ISDIR(m)	(((m)&S_IFMT) == S_IFDIR)	/* directory */
+#endif
+
+#if defined (S_IFREG) && !defined (S_ISREG)
+#define	S_ISREG(m)	(((m)&S_IFMT) == S_IFREG)	/* file */
+#endif
+
+#if defined (S_IFIFO) && !defined (S_ISFIFO)
+#define	S_ISFIFO(m)	(((m)&S_IFMT) == S_IFIFO)	/* fifo - named pipe */
+#endif
+
+#if defined (S_IFLNK) && !defined (S_ISLNK)
+#define	S_ISLNK(m)	(((m)&S_IFMT) == S_IFLNK)	/* symbolic link */
+#endif
+
+#if defined (S_IFSOCK) && !defined (S_ISSOCK)
+#define	S_ISSOCK(m)	(((m)&S_IFMT) == S_IFSOCK)	/* socket */
+#endif
+
+/*
+ * POSIX 1003.1 5.6.1.2 <sys/stat.h> File Modes
+ */
+
+#if !defined (S_IRWXU)
+#  if !defined (S_IREAD)
+#    define S_IREAD	00400
+#    define S_IWRITE	00200
+#    define S_IEXEC	00100
+#  endif /* S_IREAD */
+
+#  if !defined (S_IRUSR)
+#    define S_IRUSR	S_IREAD			/* read, owner */
+#    define S_IWUSR	S_IWRITE		/* write, owner */
+#    define S_IXUSR	S_IEXEC			/* execute, owner */
+
+#    define S_IRGRP	(S_IREAD  >> 3)		/* read, group */
+#    define S_IWGRP	(S_IWRITE >> 3)		/* write, group */
+#    define S_IXGRP	(S_IEXEC  >> 3)		/* execute, group */
+
+#    define S_IROTH	(S_IREAD  >> 6)		/* read, other */
+#    define S_IWOTH	(S_IWRITE >> 6)		/* write, other */
+#    define S_IXOTH	(S_IEXEC  >> 6)		/* execute, other */
+#  endif /* !S_IRUSR */
+
+#  define S_IRWXU	(S_IRUSR | S_IWUSR | S_IXUSR)
+#  define S_IRWXG	(S_IRGRP | S_IWGRP | S_IXGRP)
+#  define S_IRWXO	(S_IROTH | S_IWOTH | S_IXOTH)
+#endif /* !S_IRWXU */
+
+/* These are non-standard, but are used in builtins.c$symbolic_umask() */
+#define S_IRUGO		(S_IRUSR | S_IRGRP | S_IROTH)
+#define S_IWUGO		(S_IWUSR | S_IWGRP | S_IWOTH)
+#define S_IXUGO		(S_IXUSR | S_IXGRP | S_IXOTH)
+
+#endif /* _POSIXSTAT_H_ */