lib/pathmax.h

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