Function msgrcv
pub unsafe extern "C" fn msgrcv(msqid: c_int, msgp: *mut c_void, msgsz: size_t, msgtyp: c_long, msgflg: c_int) -> ssize_tmsgrcvpub unsafe extern "C" fn msgrcv(msqid: c_int, msgp: *mut c_void, msgsz: size_t, msgtyp: c_long, msgflg: c_int) -> ssize_t