(O_DIRECTORY): Define, if needed.

(save_cwd) [HAVE_FCHDIR]: Use O_DIRECTORY when opening ".".
Suggestion from Ulrich Drepper.

diff --git a/lib/save-cwd.c b/lib/save-cwd.c
index 564c91829643365c268402756d04cdc8db4715d0..b77edb339203c50c3cf1b7d24eed68b66682a7ba 100644 (file)
--- a/lib/save-cwd.c
+++ b/lib/save-cwd.c
@@ -42,6 +42,10 @@
 extern int errno;
 #endif
 
+#ifndef O_DIRECTORY
+# define O_DIRECTORY 0
+#endif
+
 #include "save-cwd.h"
 #include "error.h"
 
@@ -67,7 +71,7 @@ save_cwd (struct saved_cwd *cwd)
   if (have_working_fchdir)
     {
 #if HAVE_FCHDIR
-      cwd->desc = open (".", O_RDONLY);
+      cwd->desc = open (".", O_RDONLY | O_DIRECTORY);
       if (cwd->desc < 0)
        {
          error (0, errno, "cannot open current directory");