X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=lib%2Fpathmax.h;h=c6793f6c4aea9a4860c93aba4533b5ee752e1215;hb=0ef31c6a7e21186dcb5f18d53ec132b56cdf2927;hp=de9313b0abbc61e1531d4af9d43ac974969f5c22;hpb=72ab5007ea81719ba66664d9c1238079d9128150;p=gnulib.git

diff --git a/lib/pathmax.h b/lib/pathmax.h
index de9313b0a..c6793f6c4 100644
--- a/lib/pathmax.h
+++ b/lib/pathmax.h
@@ -1,5 +1,6 @@
 /* Define PATH_MAX somehow.  Requires sys/types.h.
-   Copyright (C) 1992, 1999, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1992, 1999, 2001, 2003, 2005, 2009-2011 Free Software
+   Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -13,29 +14,28 @@
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software Foundation,
-   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
 
 #ifndef _PATHMAX_H
 # define _PATHMAX_H
 
-# if HAVE_UNISTD_H
-#  include <unistd.h>
-# endif
+/* POSIX:2008 defines PATH_MAX to be the maximum number of bytes in a filename,
+   including the terminating NUL byte.
+   <http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/limits.h.html>
+   PATH_MAX is not defined on systems which have no limit on filename length,
+   such as GNU/Hurd.  */
 
-/* Non-POSIX BSD systems might have gcc's limits.h, which doesn't define
-   PATH_MAX but might cause redefinition warnings when sys/param.h is
-   later included (as on MORE/BSD 4.3).  */
-# if defined _POSIX_VERSION || (defined HAVE_LIMITS_H && !defined __GNUC__)
-#  include <limits.h>
-# endif
+# include <unistd.h>
+
+# include <limits.h>
 
 # ifndef _POSIX_PATH_MAX
-#  define _POSIX_PATH_MAX 255
+#  define _POSIX_PATH_MAX 256
 # endif
 
-# if !defined PATH_MAX && defined _PC_PATH_MAX
+# if !defined PATH_MAX && defined _PC_PATH_MAX && defined HAVE_PATHCONF
 #  define PATH_MAX (pathconf ("/", _PC_PATH_MAX) < 1 ? 1024 \
-		    : pathconf ("/", _PC_PATH_MAX))
+                    : pathconf ("/", _PC_PATH_MAX))
 # endif
 
 /* Don't include sys/param.h if it already has been.  */
@@ -51,4 +51,13 @@
 #  define PATH_MAX _POSIX_PATH_MAX
 # endif
 
+# ifdef __hpux
+/* On HP-UX, PATH_MAX designates the maximum number of bytes in a filename,
+   *not* including the terminating NUL byte, and is set to 1023.
+   Additionally, when _XOPEN_SOURCE is defined to 500 or more, PATH_MAX is
+   not defined at all any more.  */
+#  undef PATH_MAX
+#  define PATH_MAX 1024
+# endif
+
 #endif /* _PATHMAX_H */