neededspace 735 kern/uipc_usrreq.c int nfds, *ip, fd, neededspace; neededspace 744 kern/uipc_usrreq.c neededspace = CMSG_SPACE(nfds * sizeof(struct file *)) - neededspace 746 kern/uipc_usrreq.c if (neededspace > M_TRAILINGSPACE(control)) {