Function dr_get_string_option 

pub unsafe extern "C" fn dr_get_string_option(
    option_name: *const c_char,
    buf: *mut c_char,
    len: usize,
) -> bool_

Read the value of a string DynamoRIO runtime option named \p option_name into \p buf. Options are listed in \ref sec_options. DynamoRIO has many other undocumented options which may be queried through this API, but they are not officially supported. The option value is truncated to \p len bytes and null-terminated. \return false if no option named \p option_name exists, and true otherwise.