# fcntl-o.m4 serial 4
-dnl Copyright (C) 2006, 2009-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2013 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
#if HAVE_SYMLINK
{
static char const sym[] = "conftest.sym";
- if (symlink (".", sym) != 0)
+ if (symlink ("/dev/null", sym) != 0)
+ result |= 2;
+ else
+ {
+ int fd = open (sym, O_WRONLY | O_NOFOLLOW | O_CREAT, 0);
+ if (fd >= 0)
+ {
+ close (fd);
+ result |= 4;
+ }
+ }
+ if (unlink (sym) != 0 || symlink (".", sym) != 0)
result |= 2;
else
{