Function wasi_common::hostcalls::fd_readdir

pub fn fd_readdir(
    wasi_ctx: &WasiCtx, 
    memory: &mut [u8], 
    fd: __wasi_fd_t, 
    buf: uintptr_t, 
    buf_len: size_t, 
    cookie: __wasi_dircookie_t, 
    buf_used: uintptr_t
) -> __wasi_errno_t