1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that this notice is preserved and that due credit is given 7 * to the University of California at Berkeley. The name of the University 8 * may not be used to endorse or promote products derived from this 9 * software without specific prior written permission. This software 10 * is provided ``as is'' without express or implied warranty. 11 */ 12 13 #ifndef lint 14 static char sccsid[] = "@(#)wwtty.c 3.11 (Berkeley) 02/21/88"; 15 #endif /* not lint */ 16 17 #include "ww.h" 18 #include <fcntl.h> 19 20 wwgettty(d, t) 21 register struct ww_tty *t; 22 { 23 if (ioctl(d, TIOCGETP, (char *)&t->ww_sgttyb) < 0) 24 goto bad; 25 if (ioctl(d, TIOCGETC, (char *)&t->ww_tchars) < 0) 26 goto bad; 27 if (ioctl(d, TIOCGLTC, (char *)&t->ww_ltchars) < 0) 28 goto bad; 29 if (ioctl(d, TIOCLGET, (char *)&t->ww_lmode) < 0) 30 goto bad; 31 if (ioctl(d, TIOCGETD, (char *)&t->ww_ldisc) < 0) 32 goto bad; 33 if ((t->ww_fflags = fcntl(d, F_GETFL, 0)) < 0) 34 goto bad; 35 return 0; 36 bad: 37 wwerrno = WWE_SYS; 38 return -1; 39 } 40 41 /* 42 * Set the modes of tty 'd' to 't' 43 * 'o' is the current modes. We set the line discipline only if 44 * it changes, to avoid unnecessary flushing of typeahead. 45 */ 46 wwsettty(d, t, o) 47 register struct ww_tty *t, *o; 48 { 49 if (ioctl(d, TIOCSETN, (char *)&t->ww_sgttyb) < 0) 50 goto bad; 51 if (ioctl(d, TIOCSETC, (char *)&t->ww_tchars) < 0) 52 goto bad; 53 if (ioctl(d, TIOCSLTC, (char *)&t->ww_ltchars) < 0) 54 goto bad; 55 if (ioctl(d, TIOCLSET, (char *)&t->ww_lmode) < 0) 56 goto bad; 57 if ((o == 0 || t->ww_ldisc != o->ww_ldisc) && 58 ioctl(d, TIOCSETD, (char *)&t->ww_ldisc) < 0) 59 goto bad; 60 if (fcntl(d, F_SETFL, t->ww_fflags) < 0) 61 goto bad; 62 return 0; 63 bad: 64 wwerrno = WWE_SYS; 65 return -1; 66 } 67