message.msg_controllen = CMSG_SPACE(sizeof(int) * attachmentFDBufferLength);memset(message.msg_control,0, message.msg_controllen);structcmsghdr*cmsg=CMSG_FIRSTHDR(&message);cmsg->cmsg_level = SOL_SOCKET; cmsg->cmsg_type = SCM_RIGHTS; cmsg->cmsg_len = CMSG_LEN(sizeof(int) * attachment...