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Annotation of 43BSDTahoe/ucb/window/wwtty.c, revision 1.1.1.1

1.1       root        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 the above copyright notice and this paragraph are
                      7:  * duplicated in all such forms and that any documentation,
                      8:  * advertising materials, and other materials related to such
                      9:  * distribution and use acknowledge that the software was developed
                     10:  * by the University of California, Berkeley.  The name of the
                     11:  * University may not be used to endorse or promote products derived
                     12:  * from this software without specific prior written permission.
                     13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     16:  */
                     17: 
                     18: #ifndef lint
                     19: static char sccsid[] = "@(#)wwtty.c    3.12 (Berkeley) 6/29/88";
                     20: #endif /* not lint */
                     21: 
                     22: #include "ww.h"
                     23: #include <fcntl.h>
                     24: 
                     25: wwgettty(d, t)
                     26: register struct ww_tty *t;
                     27: {
                     28:        if (ioctl(d, TIOCGETP, (char *)&t->ww_sgttyb) < 0)
                     29:                goto bad;
                     30:        if (ioctl(d, TIOCGETC, (char *)&t->ww_tchars) < 0)
                     31:                goto bad;
                     32:        if (ioctl(d, TIOCGLTC, (char *)&t->ww_ltchars) < 0)
                     33:                goto bad;
                     34:        if (ioctl(d, TIOCLGET, (char *)&t->ww_lmode) < 0)
                     35:                goto bad;
                     36:        if (ioctl(d, TIOCGETD, (char *)&t->ww_ldisc) < 0)
                     37:                goto bad;
                     38:        if ((t->ww_fflags = fcntl(d, F_GETFL, 0)) < 0)
                     39:                goto bad;
                     40:        return 0;
                     41: bad:
                     42:        wwerrno = WWE_SYS;
                     43:        return -1;
                     44: }
                     45: 
                     46: /*
                     47:  * Set the modes of tty 'd' to 't'
                     48:  * 'o' is the current modes.  We set the line discipline only if
                     49:  * it changes, to avoid unnecessary flushing of typeahead.
                     50:  */
                     51: wwsettty(d, t, o)
                     52: register struct ww_tty *t, *o;
                     53: {
                     54:        if (ioctl(d, TIOCSETN, (char *)&t->ww_sgttyb) < 0)
                     55:                goto bad;
                     56:        if (ioctl(d, TIOCSETC, (char *)&t->ww_tchars) < 0)
                     57:                goto bad;
                     58:        if (ioctl(d, TIOCSLTC, (char *)&t->ww_ltchars) < 0)
                     59:                goto bad;
                     60:        if (ioctl(d, TIOCLSET, (char *)&t->ww_lmode) < 0)
                     61:                goto bad;
                     62:        if ((o == 0 || t->ww_ldisc != o->ww_ldisc) &&
                     63:            ioctl(d, TIOCSETD, (char *)&t->ww_ldisc) < 0)
                     64:                goto bad;
                     65:        if (fcntl(d, F_SETFL, t->ww_fflags) < 0)
                     66:                goto bad;
                     67:        return 0;
                     68: bad:
                     69:        wwerrno = WWE_SYS;
                     70:        return -1;
                     71: }

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