From: Thomas Wouters <thomas@python.org>
Date: Tue, 25 Apr 2006 15:29:46 +0000 (+0000)
Subject: Define MAXPATHLEN to be at least PATH_MAX, if that's defined. Python uses
X-Git-Tag: v2.5a2~21
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=1ddba60e3d084bfca4615bbd77c3c6f4ed34d8ee;p=python

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.
---

diff --git a/Include/osdefs.h b/Include/osdefs.h
index 8190a752ea..6937659325 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 ac74a6741f..7f2356c067 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 5c57291459..967d484b35 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 *);