21 	struct msghdr msg;  in send_fd()  local
27 	msg.msg_name = 0;  in send_fd()
28 	msg.msg_namelen = 0;  in send_fd()
29 	msg.msg_iov = iovec;  in send_fd()
30 	msg.msg_iovlen = 1;  in send_fd()
31 	msg.msg_control = buf;  in send_fd()
32 	msg.msg_controllen = CMSG_SPACE(sizeof(int));  in send_fd()
34 	cmsghdrp = CMSG_FIRSTHDR(&msg);  in send_fd()
41 	if (sendmsg(sock, &msg, 0) < 0) {  in send_fd()
53 	struct msghdr msg;  in recv_fd()  local
60 	msg.msg_name = 0;  in recv_fd()
61 	msg.msg_namelen = 0;  in recv_fd()
62 	msg.msg_iov = iovec;  in recv_fd()
63 	msg.msg_iovlen = 1;  in recv_fd()
64 	msg.msg_control = buf;  in recv_fd()
65 	msg.msg_controllen = CMSG_SPACE(sizeof(int));  in recv_fd()
66 	msg.msg_flags = 0;  in recv_fd()
68 	if (recvmsg(sock, &msg, 0) < 0) {  in recv_fd()
72 	cmsghdrp = CMSG_FIRSTHDR(&msg);  in recv_fd()