maxpathname.cpp revision 151498
1// -*- C++ -*- 2/* Copyright (C) 2005 Free Software Foundation, Inc. 3 Written by Werner Lemberg (wl@gnu.org) 4 5This file is part of groff. 6 7groff is free software; you can redistribute it and/or modify it under 8the terms of the GNU General Public License as published by the Free 9Software Foundation; either version 2, or (at your option) any later 10version. 11 12groff is distributed in the hope that it will be useful, but WITHOUT ANY 13WARRANTY; without even the implied warranty of MERCHANTABILITY or 14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15for more details. 16 17You should have received a copy of the GNU General Public License along 18with groff; see the file COPYING. If not, write to the Free Software 19Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */ 20 21/* path_name_max(dir) does the same as pathconf(dir, _PC_PATH_MAX) */ 22 23#include "lib.h" 24 25#include <sys/types.h> 26 27#ifdef HAVE_UNISTD_H 28#include <unistd.h> 29#endif /* HAVE_UNISTD_H */ 30 31#ifdef _POSIX_VERSION 32 33size_t path_name_max() 34{ 35 return pathconf("/", _PC_PATH_MAX) < 1 ? 1024 : pathconf("/",_PC_PATH_MAX); 36} 37 38#else /* not _POSIX_VERSION */ 39 40#include <stdlib.h> 41 42#ifdef HAVE_DIRENT_H 43# include <dirent.h> 44#else /* not HAVE_DIRENT_H */ 45# ifdef HAVE_SYS_DIR_H 46# include <sys/dir.h> 47# endif /* HAVE_SYS_DIR_H */ 48#endif /* not HAVE_DIRENT_H */ 49 50#ifndef PATH_MAX 51# ifdef MAXPATHLEN 52# define PATH_MAX MAXPATHLEN 53# else /* !MAXPATHLEN */ 54# ifdef MAX_PATH 55# define PATH_MAX MAX_PATH 56# else /* !MAX_PATH */ 57# ifdef _MAX_PATH 58# define PATH_MAX _MAX_PATH 59# else /* !_MAX_PATH */ 60# define PATH_MAX 255 61# endif /* !_MAX_PATH */ 62# endif /* !MAX_PATH */ 63# endif /* !MAXPATHLEN */ 64#endif /* !PATH_MAX */ 65 66size_t path_name_max() 67{ 68 return PATH_MAX; 69} 70 71#endif /* not _POSIX_VERSION */ 72