1 // -*- C++ -*- 2 /* Copyright (C) 2005-2018 Free Software Foundation, Inc. 3 Written by Werner Lemberg (wl@gnu.org) 4 5 This file is part of groff. 6 7 groff is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation, either version 3 of the License, or 10 (at your option) any later version. 11 12 groff is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 /* path_name_max(dir) does the same as pathconf(dir, _PC_PATH_MAX) */ 21 22 #include "lib.h" 23 24 #include <sys/types.h> 25 26 #ifdef HAVE_UNISTD_H 27 #include <unistd.h> 28 #endif /* HAVE_UNISTD_H */ 29 30 #ifdef _POSIX_VERSION 31 path_name_max()32size_t path_name_max() 33 { 34 return pathconf("/", _PC_PATH_MAX) < 1 ? 1024 : pathconf("/",_PC_PATH_MAX); 35 } 36 37 #else /* not _POSIX_VERSION */ 38 39 #include <stdlib.h> 40 41 #ifdef HAVE_DIRENT_H 42 # include <dirent.h> 43 #else /* not HAVE_DIRENT_H */ 44 # ifdef HAVE_SYS_DIR_H 45 # include <sys/dir.h> 46 # endif /* HAVE_SYS_DIR_H */ 47 #endif /* not HAVE_DIRENT_H */ 48 49 #ifndef PATH_MAX 50 # ifdef MAXPATHLEN 51 # define PATH_MAX MAXPATHLEN 52 # else /* !MAXPATHLEN */ 53 # ifdef MAX_PATH 54 # define PATH_MAX MAX_PATH 55 # else /* !MAX_PATH */ 56 # ifdef _MAX_PATH 57 # define PATH_MAX _MAX_PATH 58 # else /* !_MAX_PATH */ 59 # define PATH_MAX 255 60 # endif /* !_MAX_PATH */ 61 # endif /* !MAX_PATH */ 62 # endif /* !MAXPATHLEN */ 63 #endif /* !PATH_MAX */ 64 path_name_max()65size_t path_name_max() 66 { 67 return PATH_MAX; 68 } 69 70 #endif /* not _POSIX_VERSION */ 71