diff options
Diffstat (limited to 'usr.bin/window/wwtty.c')
| -rw-r--r-- | usr.bin/window/wwtty.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/usr.bin/window/wwtty.c b/usr.bin/window/wwtty.c new file mode 100644 index 0000000..2440389 --- /dev/null +++ b/usr.bin/window/wwtty.c @@ -0,0 +1,180 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Edward Wang at The University of California, Berkeley. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char sccsid[] = "@(#)wwtty.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +#include "ww.h" +#include <sys/types.h> +#include <fcntl.h> +#if !defined(OLD_TTY) && !defined(TIOCGWINSZ) +#include <sys/ioctl.h> +#endif + +wwgettty(d, t) +register struct ww_tty *t; +{ +#ifdef OLD_TTY + if (ioctl(d, TIOCGETP, (char *)&t->ww_sgttyb) < 0) + goto bad; + if (ioctl(d, TIOCGETC, (char *)&t->ww_tchars) < 0) + goto bad; + if (ioctl(d, TIOCGLTC, (char *)&t->ww_ltchars) < 0) + goto bad; + if (ioctl(d, TIOCLGET, (char *)&t->ww_lmode) < 0) + goto bad; + if (ioctl(d, TIOCGETD, (char *)&t->ww_ldisc) < 0) + goto bad; +#else + if (tcgetattr(d, &t->ww_termios) < 0) + goto bad; +#endif + if ((t->ww_fflags = fcntl(d, F_GETFL, 0)) < 0) + goto bad; + return 0; +bad: + wwerrno = WWE_SYS; + return -1; +} + +/* + * Set the modes of tty 'd' to 't' + * 'o' is the current modes. We set the line discipline only if + * it changes, to avoid unnecessary flushing of typeahead. + */ +wwsettty(d, t) +register struct ww_tty *t; +{ +#ifdef OLD_TTY + int i; + + /* XXX, for buggy tty drivers that don't wait for output to drain */ + while (ioctl(d, TIOCOUTQ, &i) >= 0 && i > 0) + usleep(100000); + if (ioctl(d, TIOCSETN, (char *)&t->ww_sgttyb) < 0) + goto bad; + if (ioctl(d, TIOCSETC, (char *)&t->ww_tchars) < 0) + goto bad; + if (ioctl(d, TIOCSLTC, (char *)&t->ww_ltchars) < 0) + goto bad; + if (ioctl(d, TIOCLSET, (char *)&t->ww_lmode) < 0) + goto bad; + if (ioctl(d, TIOCGETD, (char *)&i) < 0) + goto bad; + if (t->ww_ldisc != i && + ioctl(d, TIOCSETD, (char *)&t->ww_ldisc) < 0) + goto bad; +#else +#ifdef sun + /* XXX, for buggy tty drivers that don't wait for output to drain */ + (void) tcdrain(d); +#endif + if (tcsetattr(d, TCSADRAIN, &t->ww_termios) < 0) + goto bad; +#endif + if (fcntl(d, F_SETFL, t->ww_fflags) < 0) + goto bad; + return 0; +bad: + wwerrno = WWE_SYS; + return -1; +} + +/* + * The ttysize and stop-start routines must also work + * on the control side of pseudoterminals. + */ + +wwgetttysize(d, r, c) + int *r, *c; +{ + struct winsize winsize; + + if (ioctl(d, TIOCGWINSZ, (char *)&winsize) < 0) { + wwerrno = WWE_SYS; + return -1; + } + if (winsize.ws_row != 0) + *r = winsize.ws_row; + if (winsize.ws_col != 0) + *c = winsize.ws_col; + return 0; +} + +wwsetttysize(d, r, c) +{ + struct winsize winsize; + + winsize.ws_row = r; + winsize.ws_col = c; + winsize.ws_xpixel = winsize.ws_ypixel = 0; + if (ioctl(d, TIOCSWINSZ, (char *)&winsize) < 0) { + wwerrno = WWE_SYS; + return -1; + } + return 0; +} + +wwstoptty(d) +{ +#if !defined(OLD_TTY) && defined(TCOOFF) + /* not guaranteed to work on the pty side */ + if (tcflow(d, TCOOFF) < 0) +#else + if (ioctl(d, TIOCSTOP, (char *)0) < 0) +#endif + { + wwerrno = WWE_SYS; + return -1; + } + return 0; +} + +wwstarttty(d) +{ +#if !defined(OLD_TTY) && defined(TCOON) + /* not guaranteed to work on the pty side */ + if (tcflow(d, TCOON) < 0) +#else + if (ioctl(d, TIOCSTART, (char *)0) < 0) +#endif + { + wwerrno = WWE_SYS; + return -1; + } + return 0; +} |
