Annotation of src/usr.bin/window/wwtty.c, Revision 1.1
1.1 ! deraadt 1: /* $NetBSD: wwtty.c,v 1.3 1995/09/28 10:35:58 tls Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1983, 1993
! 5: * The Regents of the University of California. All rights reserved.
! 6: *
! 7: * This code is derived from software contributed to Berkeley by
! 8: * Edward Wang at The University of California, Berkeley.
! 9: *
! 10: * Redistribution and use in source and binary forms, with or without
! 11: * modification, are permitted provided that the following conditions
! 12: * are met:
! 13: * 1. Redistributions of source code must retain the above copyright
! 14: * notice, this list of conditions and the following disclaimer.
! 15: * 2. Redistributions in binary form must reproduce the above copyright
! 16: * notice, this list of conditions and the following disclaimer in the
! 17: * documentation and/or other materials provided with the distribution.
! 18: * 3. All advertising materials mentioning features or use of this software
! 19: * must display the following acknowledgement:
! 20: * This product includes software developed by the University of
! 21: * California, Berkeley and its contributors.
! 22: * 4. Neither the name of the University nor the names of its contributors
! 23: * may be used to endorse or promote products derived from this software
! 24: * without specific prior written permission.
! 25: *
! 26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 36: * SUCH DAMAGE.
! 37: */
! 38:
! 39: #ifndef lint
! 40: #if 0
! 41: static char sccsid[] = "@(#)wwtty.c 8.1 (Berkeley) 6/6/93";
! 42: #else
! 43: static char rcsid[] = "$NetBSD: wwtty.c,v 1.3 1995/09/28 10:35:58 tls Exp $";
! 44: #endif
! 45: #endif /* not lint */
! 46:
! 47: #include "ww.h"
! 48: #include <sys/types.h>
! 49: #include <fcntl.h>
! 50: #if !defined(OLD_TTY) && !defined(TIOCGWINSZ)
! 51: #include <sys/ioctl.h>
! 52: #endif
! 53:
! 54: wwgettty(d, t)
! 55: register struct ww_tty *t;
! 56: {
! 57: #ifdef OLD_TTY
! 58: if (ioctl(d, TIOCGETP, (char *)&t->ww_sgttyb) < 0)
! 59: goto bad;
! 60: if (ioctl(d, TIOCGETC, (char *)&t->ww_tchars) < 0)
! 61: goto bad;
! 62: if (ioctl(d, TIOCGLTC, (char *)&t->ww_ltchars) < 0)
! 63: goto bad;
! 64: if (ioctl(d, TIOCLGET, (char *)&t->ww_lmode) < 0)
! 65: goto bad;
! 66: if (ioctl(d, TIOCGETD, (char *)&t->ww_ldisc) < 0)
! 67: goto bad;
! 68: #else
! 69: if (tcgetattr(d, &t->ww_termios) < 0)
! 70: goto bad;
! 71: #endif
! 72: if ((t->ww_fflags = fcntl(d, F_GETFL, 0)) < 0)
! 73: goto bad;
! 74: return 0;
! 75: bad:
! 76: wwerrno = WWE_SYS;
! 77: return -1;
! 78: }
! 79:
! 80: /*
! 81: * Set the modes of tty 'd' to 't'
! 82: * 'o' is the current modes. We set the line discipline only if
! 83: * it changes, to avoid unnecessary flushing of typeahead.
! 84: */
! 85: wwsettty(d, t)
! 86: register struct ww_tty *t;
! 87: {
! 88: #ifdef OLD_TTY
! 89: int i;
! 90:
! 91: /* XXX, for buggy tty drivers that don't wait for output to drain */
! 92: while (ioctl(d, TIOCOUTQ, &i) >= 0 && i > 0)
! 93: usleep(100000);
! 94: if (ioctl(d, TIOCSETN, (char *)&t->ww_sgttyb) < 0)
! 95: goto bad;
! 96: if (ioctl(d, TIOCSETC, (char *)&t->ww_tchars) < 0)
! 97: goto bad;
! 98: if (ioctl(d, TIOCSLTC, (char *)&t->ww_ltchars) < 0)
! 99: goto bad;
! 100: if (ioctl(d, TIOCLSET, (char *)&t->ww_lmode) < 0)
! 101: goto bad;
! 102: if (ioctl(d, TIOCGETD, (char *)&i) < 0)
! 103: goto bad;
! 104: if (t->ww_ldisc != i &&
! 105: ioctl(d, TIOCSETD, (char *)&t->ww_ldisc) < 0)
! 106: goto bad;
! 107: #else
! 108: #ifdef sun
! 109: /* XXX, for buggy tty drivers that don't wait for output to drain */
! 110: (void) tcdrain(d);
! 111: #endif
! 112: if (tcsetattr(d, TCSADRAIN, &t->ww_termios) < 0)
! 113: goto bad;
! 114: #endif
! 115: if (fcntl(d, F_SETFL, t->ww_fflags) < 0)
! 116: goto bad;
! 117: return 0;
! 118: bad:
! 119: wwerrno = WWE_SYS;
! 120: return -1;
! 121: }
! 122:
! 123: /*
! 124: * The ttysize and stop-start routines must also work
! 125: * on the control side of pseudoterminals.
! 126: */
! 127:
! 128: wwgetttysize(d, r, c)
! 129: int *r, *c;
! 130: {
! 131: struct winsize winsize;
! 132:
! 133: if (ioctl(d, TIOCGWINSZ, (char *)&winsize) < 0) {
! 134: wwerrno = WWE_SYS;
! 135: return -1;
! 136: }
! 137: if (winsize.ws_row != 0)
! 138: *r = winsize.ws_row;
! 139: if (winsize.ws_col != 0)
! 140: *c = winsize.ws_col;
! 141: return 0;
! 142: }
! 143:
! 144: wwsetttysize(d, r, c)
! 145: {
! 146: struct winsize winsize;
! 147:
! 148: winsize.ws_row = r;
! 149: winsize.ws_col = c;
! 150: winsize.ws_xpixel = winsize.ws_ypixel = 0;
! 151: if (ioctl(d, TIOCSWINSZ, (char *)&winsize) < 0) {
! 152: wwerrno = WWE_SYS;
! 153: return -1;
! 154: }
! 155: return 0;
! 156: }
! 157:
! 158: wwstoptty(d)
! 159: {
! 160: #if !defined(OLD_TTY) && defined(TCOOFF)
! 161: /* not guaranteed to work on the pty side */
! 162: if (tcflow(d, TCOOFF) < 0)
! 163: #else
! 164: if (ioctl(d, TIOCSTOP, (char *)0) < 0)
! 165: #endif
! 166: {
! 167: wwerrno = WWE_SYS;
! 168: return -1;
! 169: }
! 170: return 0;
! 171: }
! 172:
! 173: wwstarttty(d)
! 174: {
! 175: #if !defined(OLD_TTY) && defined(TCOON)
! 176: /* not guaranteed to work on the pty side */
! 177: if (tcflow(d, TCOON) < 0)
! 178: #else
! 179: if (ioctl(d, TIOCSTART, (char *)0) < 0)
! 180: #endif
! 181: {
! 182: wwerrno = WWE_SYS;
! 183: return -1;
! 184: }
! 185: return 0;
! 186: }
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