openat: allow return of fd 0

[gnulib.git] / lib / chdir-long.c

diff --git a/lib/chdir-long.c b/lib/chdir-long.c
index ba47d59..afe018d 100644 (file)
--- a/lib/chdir-long.c
+++ b/lib/chdir-long.c
@@ -20,19 +20,23 @@
 
 #include "chdir-long.h"
 
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
 #include <stdlib.h>
 #include <stdbool.h>
 #include <string.h>
-#include <errno.h>
 #include <stdio.h>
-#include <assert.h>
-
-#include "fcntl--.h"
 
 #ifndef PATH_MAX
 # error "compile this file only if your system defines PATH_MAX"
 #endif
 
+/* The results of openat() in this file are not leaked to any
+   single-threaded code that could use stdio.
+   FIXME - if the kernel ever adds support for multi-thread safety for
+   avoiding standard fds, then we should use openat_safer.  */
+
 struct cd_buf
 {
   int fd;