1/* Define PATH_MAX somehow. Requires sys/types.h. 2 Copyright (C) 1992, 1999, 2001, 2003, 2005, 2009-2011 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 General Public License as published by 7 the Free Software Foundation; either version 3, 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 General Public License for more details. 14 15 You should have received a copy of the GNU 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/* POSIX:2008 defines PATH_MAX to be the maximum number of bytes in a filename, 23 including the terminating NUL byte. 24 <http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/limits.h.html> 25 PATH_MAX is not defined on systems which have no limit on filename length, 26 such as GNU/Hurd. 27 28 This file does *not* define PATH_MAX always. Programs that use this file 29 can handle the GNU/Hurd case in several ways: 30 - Either with a package-wide handling, or with a per-file handling, 31 - Either through a 32 #ifdef PATH_MAX 33 or through a fallback like 34 #ifndef PATH_MAX 35 # define PATH_MAX 8192 36 #endif 37 or through a fallback like 38 #ifndef PATH_MAX 39 # define PATH_MAX pathconf ("/", _PC_PATH_MAX) 40 #endif 41 */ 42 43# include <unistd.h> 44 45# include <limits.h> 46 47# ifndef _POSIX_PATH_MAX 48# define _POSIX_PATH_MAX 256 49# endif 50 51/* Don't include sys/param.h if it already has been. */ 52# if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN 53# include <sys/param.h> 54# endif 55 56# if !defined PATH_MAX && defined MAXPATHLEN 57# define PATH_MAX MAXPATHLEN 58# endif 59 60# ifdef __hpux 61/* On HP-UX, PATH_MAX designates the maximum number of bytes in a filename, 62 *not* including the terminating NUL byte, and is set to 1023. 63 Additionally, when _XOPEN_SOURCE is defined to 500 or more, PATH_MAX is 64 not defined at all any more. */ 65# undef PATH_MAX 66# define PATH_MAX 1024 67# endif 68 69#endif /* _PATHMAX_H */ 70