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ffca4c22 | 1 | /* Define PATH_MAX somehow. Requires sys/types.h. |
f0007cad | 2 | Copyright (C) 1992, 1999, 2001, 2003, 2005, 2009-2012 Free Software |
61cd9dc9 | 3 | Foundation, Inc. |
ffca4c22 AW |
4 | |
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU Lesser General Public License as published by | |
7 | the Free Software Foundation; either version 2, 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 Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser 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 | ||
231c0e0e LC |
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, | |
35428fb6 LC |
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 | */ | |
231c0e0e | 42 | |
ffca4c22 AW |
43 | # include <unistd.h> |
44 | ||
45 | # include <limits.h> | |
46 | ||
47 | # ifndef _POSIX_PATH_MAX | |
48 | # define _POSIX_PATH_MAX 256 | |
49 | # endif | |
50 | ||
ffca4c22 AW |
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 | ||
231c0e0e LC |
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 | ||
35428fb6 LC |
69 | # if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__ |
70 | /* The page "Naming Files, Paths, and Namespaces" on msdn.microsoft.com, | |
71 | section "Maximum Path Length Limitation", | |
72 | <http://msdn.microsoft.com/en-us/library/aa365247(v=vs.85).aspx#maxpath> | |
73 | explains that the maximum size of a filename, including the terminating | |
74 | NUL byte, is 260 = 3 + 256 + 1. | |
75 | This is the same value as | |
76 | - FILENAME_MAX in <stdio.h>, | |
77 | - _MAX_PATH in <stdlib.h>, | |
78 | - MAX_PATH in <windef.h>. | |
79 | Undefine the original value, because mingw's <limits.h> gets it wrong. */ | |
80 | # undef PATH_MAX | |
81 | # define PATH_MAX 260 | |
82 | # endif | |
83 | ||
ffca4c22 | 84 | #endif /* _PATHMAX_H */ |