* fhandler_disk_file.cc (fhandler_disk_file::facl): If file can't be

opened for reading the ACLs, fall back to faking them.
	* sec_acl.cc (acl_worker): Handle non-existing files.
	* security.cc (get_file_attribute): Return ILLEGAL_UID/ILLEGAL_GID
	as owner/group for non-readable ACLs on file systems supporting them.

winsup/cygwin/sec_acl.cc

@@ -407,6 +407,8 @@ acl_worker (const char *path, int cmd, int nentries, __aclent32_t *aclbufp,
       debug_printf ("got %d error from build_fh_name", fh->error ());
       set_errno (fh->error ());
     }
+  else if (!fh->exists ())
+    set_errno (ENOENT);
   else
     res = fh->facl (cmd, nentries, aclbufp);