- Apply realpath() cache patch. We don't use it if we're in safe_mode and

- friends (which are quite slow anyway).
- If it proves to be stable I'll remove the #ifdef's in a few weeks.

main/main.c

@@ -322,7 +322,10 @@ PHP_INI_BEGIN()
 
 	STD_PHP_INI_BOOLEAN("allow_url_fopen",		"1",		PHP_INI_SYSTEM,		OnUpdateBool,			allow_url_fopen,			php_core_globals,	core_globals)
 	STD_PHP_INI_BOOLEAN("always_populate_raw_post_data",		"0",		PHP_INI_SYSTEM|PHP_INI_PERDIR,		OnUpdateBool,			always_populate_raw_post_data,			php_core_globals,	core_globals)
-
+#ifdef REALPATH_CACHE
+	STD_PHP_INI_ENTRY("realpath_cache_size", "16K", PHP_INI_SYSTEM, OnUpdateLong, realpath_cache_size_limit, virtual_cwd_globals, cwd_globals)
+	STD_PHP_INI_ENTRY("realpath_cache_ttl", "120", PHP_INI_SYSTEM, OnUpdateLong, realpath_cache_ttl, virtual_cwd_globals, cwd_globals)
+#endif
 PHP_INI_END()
 /* }}} */
 
@@ -1386,6 +1389,11 @@ int php_module_startup(sapi_module_struct *sf, zend_module_entry *additional_mod
 	REGISTER_INI_ENTRIES();
 	zend_register_standard_ini_entries(TSRMLS_C);
 
+	/* Disable realpath cache if safe_mode or open_basedir are set */
+	if (PG(safe_mode) || (PG(open_basedir) && *PG(open_basedir))) {
+		CWDG(realpath_cache_size_limit) = 0;
+	}
+
 	/* initialize stream wrappers registry
 	 * (this uses configuration parameters from php.ini)
 	 */