There might be more systems which do not support chroot, so we check

Sascha Schumann · Sascha Schumann · commit 637e8e14aa81 · 2001-02-15T05:21:27.000Z
for the existence of it.

Additionally, if chroot is not supported, the warn_not_available function
is invoked now.
diff --git a/configure.in b/configure.in
@@ -358,6 +358,7 @@ dnl Checks for library functions.
 AC_FUNC_VPRINTF
 AC_CHECK_FUNCS(
 asctime_r \
+chroot \
 crypt \
 ctime_r \
 cuserid \
diff --git a/ext/standard/basic_functions.c b/ext/standard/basic_functions.c
@@ -465,8 +465,10 @@ function_entry basic_functions[] = {
 	PHP_FE(opendir,				NULL)
 	PHP_FE(closedir,			NULL)
 	PHP_FE(chdir,				NULL)
-#if !defined(ZEND_WIN32)&&!defined(ZTS)
+#if defined(HAVE_CHROOT) && !defined(ZTS)
 	PHP_FE(chroot,				NULL)
+#else
+	PHP_FALIAS(chroot, warn_not_available, NULL)
 #endif
 	PHP_FE(getcwd,				NULL)
 	PHP_FE(rewinddir,			NULL)
diff --git a/ext/standard/dir.c b/ext/standard/dir.c
@@ -223,7 +223,7 @@ PHP_FUNCTION(closedir)
 
 /* }}} */
 
-#if !defined(ZEND_WIN32)&&!defined(ZTS)
+#if defined(HAVE_CHROOT) && !defined(ZTS)
 /* {{{ proto int chroot(string directory)
    Change root directory */
 
diff --git a/ext/standard/php_dir.h b/ext/standard/php_dir.h
@@ -28,7 +28,7 @@ PHP_RINIT_FUNCTION(dir);
 PHP_FUNCTION(opendir);
 PHP_FUNCTION(closedir);
 PHP_FUNCTION(chdir);
-#if !defined(ZEND_WIN32)&&!defined(ZTS)
+#if defined(HAVE_CHROOT) && !defined(ZTS)
 PHP_FUNCTION(chroot);
 #endif
 PHP_FUNCTION(getcwd);
