1 /* 2 * Copyright (c) 1980 Regents of the University of California. 3 * All rights reserved. The Berkeley software License Agreement 4 * specifies the terms and conditions for redistribution. 5 * 6 * @(#)ttynam_.c 5.1 06/07/85 7 */ 8 9 /* 10 * Return name of tty port associated with lunit 11 * 12 * calling sequence: 13 * character*19 string, ttynam 14 * string = ttynam (lunit) 15 * where: 16 * the character string will be filled with the name of 17 * the port, preceded with '/dev/', and blank padded. 18 * (19 is the max length ever required) 19 */ 20 21 #include "../libI77/fiodefs.h" 22 23 extern unit units[]; 24 25 ttynam_(name, strlen, lu) 26 char *name; long strlen; long *lu; 27 { 28 char *t = NULL, *ttyname(); 29 30 if (0 <= *lu && *lu < MXUNIT && units[*lu].ufd) 31 t = ttyname(fileno(units[*lu].ufd)); 32 if (t == NULL) 33 t = ""; 34 b_char(t, name, strlen); 35 } 36