Function glob 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn glob(
    pattern: *const c_char,
    flags: c_int,
    errfunc: Option<unsafe extern "C" fn(epath: *const c_char, eerrno: c_int) -> c_int>,
    pglob: *mut glob_t,
) -> c_int

See https://pubs.opengroup.org/onlinepubs/9799919799/functions/glob.html.