Function posix_getdents 

#[unsafe(no_mangle)]
pub extern "C" fn posix_getdents(
    fildes: c_int,
    buf: *mut c_void,
    nbyte: size_t,
    _flags: c_int,
) -> ssize_t

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