lib/pathmax.h

   1 /* Define PATH_MAX somehow.  Requires sys/types.h.
   2    Copyright (C) 1992, 1999, 2001, 2003, 2005, 2009-2010 Free Software
   3    Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU Lesser General Public License as published by
   7    the Free Software Foundation; either version 2, or (at your option)
   8    any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public License
  16    along with this program; if not, write to the Free Software Foundation,
  17    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  18
  19 #ifndef _PATHMAX_H
  20 # define _PATHMAX_H
  21
  22 # include <unistd.h>
  23
  24 # include <limits.h>
  25
  26 # ifndef _POSIX_PATH_MAX
  27 #  define _POSIX_PATH_MAX 256
  28 # endif
  29
  30 # if !defined PATH_MAX && defined _PC_PATH_MAX && defined HAVE_PATHCONF
  31 #  define PATH_MAX (pathconf ("/", _PC_PATH_MAX) < 1 ? 1024 \
  32                     : pathconf ("/", _PC_PATH_MAX))
  33 # endif
  34
  35 /* Don't include sys/param.h if it already has been.  */
  36 # if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN
  37 #  include <sys/param.h>
  38 # endif
  39
  40 # if !defined PATH_MAX && defined MAXPATHLEN
  41 #  define PATH_MAX MAXPATHLEN
  42 # endif
  43
  44 # ifndef PATH_MAX
  45 #  define PATH_MAX _POSIX_PATH_MAX
  46 # endif
  47
  48 #endif /* _PATHMAX_H */