+optgroup_ntfs3g_available (void)
+{
+ int r = access ("/bin/ntfs-3g.probe", X_OK);
+ return r == 0;
+}
+
+int
+optgroup_ntfsprogs_available (void)
+{
+ int r = access ("/usr/sbin/ntfsresize", X_OK);
+ return r == 0;
+}
+
+int
+do_ntfs_3g_probe (int rw, const char *device)