From 1ddba60e3d084bfca4615bbd77c3c6f4ed34d8ee Mon Sep 17 00:00:00 2001
From: Thomas Wouters <thomas@python.org>
Date: Tue, 25 Apr 2006 15:29:46 +0000
Subject: Define MAXPATHLEN to be at least PATH_MAX, if that's defined. Python
 uses MAXPATHLEN-sized buffers for various output-buffers (like to
 realpath()), and that's correct on BSD platforms, but not Linux (which uses
 PATH_MAX, and does not define MAXPATHLEN.) Cursory googling suggests Linux is
 following a newer standard than BSD, but in cases like this, who knows. Using
 the greater of PATH_MAX and 1024 as a fallback for MAXPATHLEN seems to be the
 most portable solution.

---
 Include/osdefs.h      | 4 ++++
 Modules/posixmodule.c | 4 ++++
 Python/getcwd.c       | 4 ++++
 3 files changed, 12 insertions(+)

diff --git a/Include/osdefs.h b/Include/osdefs.h
index 8190a75..6937659 100644
--- a/Include/osdefs.h
+++ b/Include/osdefs.h
@@ -37,8 +37,12 @@ extern "C" {
 
 /* Max pathname length */
 #ifndef MAXPATHLEN
+#if defined(PATH_MAX) && PATH_MAX > 1024
+#define MAXPATHLEN PATH_MAX
+#else
 #define MAXPATHLEN 1024
 #endif
+#endif
 
 /* Search path entry delimiter */
 #ifndef DELIM
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index ac74a67..7f2356c 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -262,7 +262,11 @@ extern int lstat(const char *, struct stat *);
 #endif /* OS2 */
 
 #ifndef MAXPATHLEN
+#if defined(PATH_MAX) && PATH_MAX > 1024
+#define MAXPATHLEN PATH_MAX
+#else
 #define MAXPATHLEN 1024
+#endif
 #endif /* MAXPATHLEN */
 
 #ifdef UNION_WAIT
diff --git a/Python/getcwd.c b/Python/getcwd.c
index 5c57291..967d484 100644
--- a/Python/getcwd.c
+++ b/Python/getcwd.c
@@ -14,8 +14,12 @@
 #endif
 
 #ifndef MAXPATHLEN
+#if defined(PATH_MAX) && PATH_MAX > 1024
+#define MAXPATHLEN PATH_MAX
+#else
 #define MAXPATHLEN 1024
 #endif
+#endif
 
 extern char *getwd(char *);
 
-- 
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