nc 0.9.8

Access system calls directly
Documentation 
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/// Receive a message from message queue (REALTIME)
pub unsafe fn kmq_timedreceive(
    mqd: i32,
    msg: &mut [u8],
    msg_len: usize,
    msg_prio: u32,
    abs_timeout: &timespec_t,
) -> Result<ssize_t, Errno> {
    let mqd = mqd as usize;
    let msg_ptr = msg.as_mut_ptr() as usize;
    let msg_prio = msg_prio as usize;
    let abs_timeout_ptr = core::ptr::from_ref(abs_timeout) as usize;
    unsafe {
        syscall5(
            SYS_KMQ_TIMEDRECEIVE,
            mqd,
            msg_ptr,
            msg_len,
            msg_prio,
            abs_timeout_ptr,
        )
        .map(|val| val as ssize_t)
    }
}