#[cfg(target_os = "linux")]
mod wrapper {
    use testutils::*;
    use uapi::*;

    #[ignore] // better not remove this
    // #[test_if(root)]
    #[test]
    fn pivot_root_() {
        let tmp = Tempdir::new();

        let sub1 = &*format!("{}/a", tmp);
        let sub2 = &*format!("{}/a/b", tmp);

        mount("", tmp.bstr(), "tmpfs", 0, None).unwrap();
        defer!(|| umount2(tmp.bstr(), 0).unwrap());

        mount("", tmp.bstr(), Ustr::null(), c::MS_PRIVATE, None).unwrap();

        mkdir(sub1, 0).unwrap();

        mount("", sub1, "tmpfs", 0, None).unwrap();
        defer!(|| umount2(sub1, 0).unwrap());

        mkdir(sub2, 0).unwrap();

        pivot_root(sub1, sub2).unwrap();
    }
}