mirror of https://gitee.com/openkylin/wget.git
84 lines
2.9 KiB
C
84 lines
2.9 KiB
C
|
/* Define PATH_MAX somehow. Requires sys/types.h.
|
||
|
|
Copyright (C) 1992, 1999, 2001, 2003, 2005, 2009-2019 Free Software
|
||
|
|
Foundation, Inc.
|
||
|
|
|
||
|
|
This program is free software; you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU General Public License as published by
|
||
|
|
the Free Software Foundation; either version 3, or (at your option)
|
||
|
|
any later version.
|
||
|
|
|
||
|
|
This program is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
GNU General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with this program; if not, see <https://www.gnu.org/licenses/>. */
|
||
|
|
|
||
|
|
#ifndef _PATHMAX_H
|
||
|
|
# define _PATHMAX_H
|
||
|
|
|
||
|
|
/* POSIX:2008 defines PATH_MAX to be the maximum number of bytes in a filename,
|
||
|
|
including the terminating NUL byte.
|
||
|
|
<http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/limits.h.html>
|
||
|
|
PATH_MAX is not defined on systems which have no limit on filename length,
|
||
|
|
such as GNU/Hurd.
|
||
|
|
|
||
|
|
This file does *not* define PATH_MAX always. Programs that use this file
|
||
|
|
can handle the GNU/Hurd case in several ways:
|
||
|
|
- Either with a package-wide handling, or with a per-file handling,
|
||
|
|
- Either through a
|
||
|
|
#ifdef PATH_MAX
|
||
|
|
or through a fallback like
|
||
|
|
#ifndef PATH_MAX
|
||
|
|
# define PATH_MAX 8192
|
||
|
|
#endif
|
||
|
|
or through a fallback like
|
||
|
|
#ifndef PATH_MAX
|
||
|
|
# define PATH_MAX pathconf ("/", _PC_PATH_MAX)
|
||
|
|
#endif
|
||
|
|
*/
|
||
|
|
|
||
|
|
# include <unistd.h>
|
||
|
|
|
||
|
|
# include <limits.h>
|
||
|
|
|
||
|
|
# ifndef _POSIX_PATH_MAX
|
||
|
|
# define _POSIX_PATH_MAX 256
|
||
|
|
# endif
|
||
|
|
|
||
|
|
/* Don't include sys/param.h if it already has been. */
|
||
|
|
# if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN
|
||
|
|
# include <sys/param.h>
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# if !defined PATH_MAX && defined MAXPATHLEN
|
||
|
|
# define PATH_MAX MAXPATHLEN
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# ifdef __hpux
|
||
|
|
/* On HP-UX, PATH_MAX designates the maximum number of bytes in a filename,
|
||
|
|
*not* including the terminating NUL byte, and is set to 1023.
|
||
|
|
Additionally, when _XOPEN_SOURCE is defined to 500 or more, PATH_MAX is
|
||
|
|
not defined at all any more. */
|
||
|
|
# undef PATH_MAX
|
||
|
|
# define PATH_MAX 1024
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# if defined _WIN32 && ! defined __CYGWIN__
|
||
|
|
/* The page "Naming Files, Paths, and Namespaces" on msdn.microsoft.com,
|
||
|
|
section "Maximum Path Length Limitation",
|
||
|
|
<https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file#maximum-path-length-limitation>
|
||
|
|
explains that the maximum size of a filename, including the terminating
|
||
|
|
NUL byte, is 260 = 3 + 256 + 1.
|
||
|
|
This is the same value as
|
||
|
|
- FILENAME_MAX in <stdio.h>,
|
||
|
|
- _MAX_PATH in <stdlib.h>,
|
||
|
|
- MAX_PATH in <windef.h>.
|
||
|
|
Undefine the original value, because mingw's <limits.h> gets it wrong. */
|
||
|
|
# undef PATH_MAX
|
||
|
|
# define PATH_MAX 260
|
||
|
|
# endif
|
||
|
|
|
||
|
|
#endif /* _PATHMAX_H */
|