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diff --git a/include/posixdir.h b/include/posixdir.h
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+/* posixdir.h -- Posix directory reading includes and defines. */
+
+/* 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 2, 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, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+
+/* This file should be included instead of <dirent.h> or <sys/dir.h>. */
+
+#if !defined (_POSIXDIR_H_)
+#define _POSIXDIR_H_
+
+#if defined (HAVE_DIRENT_H)
+# include <dirent.h>
+# if defined (HAVE_STRUCT_DIRENT_D_NAMLEN)
+# define D_NAMLEN(d) ((d)->d_namlen)
+# else
+# define D_NAMLEN(d) (strlen ((d)->d_name))
+# endif /* !HAVE_STRUCT_DIRENT_D_NAMLEN */
+#else
+# if defined (HAVE_SYS_NDIR_H)
+# include <sys/ndir.h>
+# endif
+# if defined (HAVE_SYS_DIR_H)
+# include <sys/dir.h>
+# endif
+# if defined (HAVE_NDIR_H)
+# include <ndir.h>
+# endif
+# if !defined (dirent)
+# define dirent direct
+# endif /* !dirent */
+# define D_NAMLEN(d) ((d)->d_namlen)
+#endif /* !HAVE_DIRENT_H */
+
+#if defined (HAVE_STRUCT_DIRENT_D_INO) && !defined (HAVE_STRUCT_DIRENT_D_FILENO)
+# define d_fileno d_ino
+#endif
+
+#if defined (_POSIX_SOURCE) && (!defined (HAVE_STRUCT_DIRENT_D_INO) || defined (BROKEN_DIRENT_D_INO))
+/* Posix does not require that the d_ino field be present, and some
+ systems do not provide it. */
+# define REAL_DIR_ENTRY(dp) 1
+#else
+# define REAL_DIR_ENTRY(dp) (dp->d_ino != 0)
+#endif /* _POSIX_SOURCE */
+
+#endif /* !_POSIXDIR_H_ */