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