Function uapi::fsconfig_set_path_empty

pub fn fsconfig_set_path_empty<'a, 'b>(
    fs_fd: c_int, 
    key: impl IntoUstr<'a>, 
    dfd: c_int, 
    path: impl IntoUstr<'b>
) -> Result<()>

fsconfig(2) with cmd = FSCONFIG_SET_PATH_EMPTY