These ones were unambiguous cases where the Foundation was the only listed copyright holder (in the associated license block). Sponsored by: The FreeBSD Foundation
714 lines
16 KiB
C
714 lines
16 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2009 The FreeBSD Foundation
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*
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* This software was developed by Ed Schouten under sponsorship from the
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* FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/cons.h>
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#include <sys/consio.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <sys/systm.h>
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#include <sys/terminal.h>
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#include <sys/tty.h>
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#include <machine/stdarg.h>
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static MALLOC_DEFINE(M_TERMINAL, "terminal", "terminal device");
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/*
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* Locking.
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*
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* Normally we don't need to lock down the terminal emulator, because
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* the TTY lock is already held when calling teken_input().
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* Unfortunately this is not the case when the terminal acts as a
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* console device, because cnputc() can be called at the same time.
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* This means terminals may need to be locked down using a spin lock.
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*/
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#define TERMINAL_LOCK(tm) do { \
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if ((tm)->tm_flags & TF_CONS) \
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mtx_lock_spin(&(tm)->tm_mtx); \
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else if ((tm)->tm_tty != NULL) \
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tty_lock((tm)->tm_tty); \
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} while (0)
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#define TERMINAL_UNLOCK(tm) do { \
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if ((tm)->tm_flags & TF_CONS) \
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mtx_unlock_spin(&(tm)->tm_mtx); \
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else if ((tm)->tm_tty != NULL) \
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tty_unlock((tm)->tm_tty); \
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} while (0)
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#define TERMINAL_LOCK_TTY(tm) do { \
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if ((tm)->tm_flags & TF_CONS) \
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mtx_lock_spin(&(tm)->tm_mtx); \
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} while (0)
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#define TERMINAL_UNLOCK_TTY(tm) do { \
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if ((tm)->tm_flags & TF_CONS) \
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mtx_unlock_spin(&(tm)->tm_mtx); \
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} while (0)
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#define TERMINAL_LOCK_CONS(tm) mtx_lock_spin(&(tm)->tm_mtx)
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#define TERMINAL_UNLOCK_CONS(tm) mtx_unlock_spin(&(tm)->tm_mtx)
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/*
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* TTY routines.
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*/
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static tsw_open_t termtty_open;
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static tsw_close_t termtty_close;
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static tsw_outwakeup_t termtty_outwakeup;
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static tsw_ioctl_t termtty_ioctl;
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static tsw_mmap_t termtty_mmap;
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static struct ttydevsw terminal_tty_class = {
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.tsw_open = termtty_open,
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.tsw_close = termtty_close,
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.tsw_outwakeup = termtty_outwakeup,
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.tsw_ioctl = termtty_ioctl,
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.tsw_mmap = termtty_mmap,
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};
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/*
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* Terminal emulator routines.
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*/
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static tf_bell_t termteken_bell;
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static tf_cursor_t termteken_cursor;
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static tf_putchar_t termteken_putchar;
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static tf_fill_t termteken_fill;
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static tf_copy_t termteken_copy;
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static tf_pre_input_t termteken_pre_input;
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static tf_post_input_t termteken_post_input;
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static tf_param_t termteken_param;
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static tf_respond_t termteken_respond;
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static teken_funcs_t terminal_drawmethods = {
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.tf_bell = termteken_bell,
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.tf_cursor = termteken_cursor,
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.tf_putchar = termteken_putchar,
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.tf_fill = termteken_fill,
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.tf_copy = termteken_copy,
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.tf_pre_input = termteken_pre_input,
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.tf_post_input = termteken_post_input,
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.tf_param = termteken_param,
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.tf_respond = termteken_respond,
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};
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/* Kernel message formatting. */
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static teken_attr_t kernel_message = {
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.ta_fgcolor = TCHAR_FGCOLOR(TERMINAL_KERN_ATTR),
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.ta_bgcolor = TCHAR_BGCOLOR(TERMINAL_KERN_ATTR),
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.ta_format = TCHAR_FORMAT(TERMINAL_KERN_ATTR)
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};
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static teken_attr_t default_message = {
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.ta_fgcolor = TCHAR_FGCOLOR(TERMINAL_NORM_ATTR),
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.ta_bgcolor = TCHAR_BGCOLOR(TERMINAL_NORM_ATTR),
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.ta_format = TCHAR_FORMAT(TERMINAL_NORM_ATTR)
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};
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/* Fudge fg brightness as TF_BOLD (shifted). */
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#define TCOLOR_FG_FUDGED(color) __extension__ ({ \
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teken_color_t _c; \
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\
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_c = (color); \
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TCOLOR_FG(_c & 7) | ((_c & 8) << 18); \
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})
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/* Fudge bg brightness as TF_BLINK (shifted). */
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#define TCOLOR_BG_FUDGED(color) __extension__ ({ \
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teken_color_t _c; \
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\
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_c = (color); \
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TCOLOR_BG(_c & 7) | ((_c & 8) << 20); \
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})
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#define TCOLOR_256TO16(color) __extension__ ({ \
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teken_color_t _c; \
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\
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_c = (color); \
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if (_c >= 16) \
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_c = teken_256to16(_c); \
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_c; \
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})
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#define TCHAR_CREATE(c, a) ((c) | TFORMAT((a)->ta_format) | \
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TCOLOR_FG_FUDGED(TCOLOR_256TO16((a)->ta_fgcolor)) | \
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TCOLOR_BG_FUDGED(TCOLOR_256TO16((a)->ta_bgcolor)))
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static void
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terminal_init(struct terminal *tm)
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{
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int fg, bg;
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if (tm->tm_flags & TF_CONS)
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mtx_init(&tm->tm_mtx, "trmlck", NULL, MTX_SPIN);
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teken_init(&tm->tm_emulator, &terminal_drawmethods, tm);
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fg = bg = -1;
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TUNABLE_INT_FETCH("teken.fg_color", &fg);
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TUNABLE_INT_FETCH("teken.bg_color", &bg);
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if (fg != -1) {
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default_message.ta_fgcolor = fg;
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kernel_message.ta_fgcolor = fg;
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}
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if (bg != -1) {
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default_message.ta_bgcolor = bg;
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kernel_message.ta_bgcolor = bg;
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}
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if (default_message.ta_bgcolor == TC_WHITE) {
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default_message.ta_bgcolor |= TC_LIGHT;
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kernel_message.ta_bgcolor |= TC_LIGHT;
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}
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if (default_message.ta_bgcolor == TC_BLACK &&
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default_message.ta_fgcolor < TC_NCOLORS)
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kernel_message.ta_fgcolor |= TC_LIGHT;
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teken_set_defattr(&tm->tm_emulator, &default_message);
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}
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struct terminal *
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terminal_alloc(const struct terminal_class *tc, void *softc)
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{
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struct terminal *tm;
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tm = malloc(sizeof(struct terminal), M_TERMINAL, M_WAITOK|M_ZERO);
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terminal_init(tm);
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tm->tm_class = tc;
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tm->tm_softc = softc;
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return (tm);
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}
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static void
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terminal_sync_ttysize(struct terminal *tm)
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{
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struct tty *tp;
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tp = tm->tm_tty;
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if (tp == NULL)
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return;
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tty_lock(tp);
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tty_set_winsize(tp, &tm->tm_winsize);
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tty_unlock(tp);
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}
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void
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terminal_maketty(struct terminal *tm, const char *fmt, ...)
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{
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struct tty *tp;
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char name[8];
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va_list ap;
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va_start(ap, fmt);
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vsnrprintf(name, sizeof name, 32, fmt, ap);
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va_end(ap);
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tp = tty_alloc(&terminal_tty_class, tm);
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tty_makedev(tp, NULL, "%s", name);
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tm->tm_tty = tp;
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terminal_sync_ttysize(tm);
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}
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void
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terminal_set_cursor(struct terminal *tm, const term_pos_t *pos)
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{
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teken_set_cursor(&tm->tm_emulator, pos);
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}
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void
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terminal_set_winsize_blank(struct terminal *tm, const struct winsize *size,
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int blank, const term_attr_t *attr)
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{
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term_rect_t r;
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tm->tm_winsize = *size;
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r.tr_begin.tp_row = r.tr_begin.tp_col = 0;
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r.tr_end.tp_row = size->ws_row;
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r.tr_end.tp_col = size->ws_col;
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TERMINAL_LOCK(tm);
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if (blank == 0)
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teken_set_winsize_noreset(&tm->tm_emulator, &r.tr_end);
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else
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teken_set_winsize(&tm->tm_emulator, &r.tr_end);
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TERMINAL_UNLOCK(tm);
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if ((blank != 0) && !(tm->tm_flags & TF_MUTE))
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tm->tm_class->tc_fill(tm, &r,
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TCHAR_CREATE((teken_char_t)' ', attr));
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terminal_sync_ttysize(tm);
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}
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void
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terminal_set_winsize(struct terminal *tm, const struct winsize *size)
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{
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terminal_set_winsize_blank(tm, size, 1,
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(const term_attr_t *)&default_message);
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}
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/*
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* XXX: This function is a kludge. Drivers like vt(4) need to
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* temporarily stop input when resizing, etc. This should ideally be
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* handled within the driver.
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*/
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void
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terminal_mute(struct terminal *tm, int yes)
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{
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TERMINAL_LOCK(tm);
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if (yes)
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tm->tm_flags |= TF_MUTE;
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else
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tm->tm_flags &= ~TF_MUTE;
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TERMINAL_UNLOCK(tm);
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}
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void
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terminal_input_char(struct terminal *tm, term_char_t c)
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{
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struct tty *tp;
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tp = tm->tm_tty;
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if (tp == NULL)
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return;
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/*
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* Strip off any attributes. Also ignore input of second part of
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* CJK fullwidth characters, as we don't want to return these
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* characters twice.
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*/
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if (TCHAR_FORMAT(c) & TF_CJK_RIGHT)
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return;
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c = TCHAR_CHARACTER(c);
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tty_lock(tp);
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/*
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* Conversion to UTF-8.
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*/
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if (c < 0x80) {
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ttydisc_rint(tp, c, 0);
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} else if (c < 0x800) {
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char str[2] = {
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0xc0 | (c >> 6),
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0x80 | (c & 0x3f)
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};
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ttydisc_rint_simple(tp, str, sizeof str);
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} else if (c < 0x10000) {
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char str[3] = {
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0xe0 | (c >> 12),
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0x80 | ((c >> 6) & 0x3f),
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0x80 | (c & 0x3f)
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};
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ttydisc_rint_simple(tp, str, sizeof str);
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} else {
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char str[4] = {
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0xf0 | (c >> 18),
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0x80 | ((c >> 12) & 0x3f),
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0x80 | ((c >> 6) & 0x3f),
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0x80 | (c & 0x3f)
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};
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ttydisc_rint_simple(tp, str, sizeof str);
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}
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ttydisc_rint_done(tp);
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tty_unlock(tp);
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}
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void
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terminal_input_raw(struct terminal *tm, char c)
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{
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struct tty *tp;
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tp = tm->tm_tty;
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if (tp == NULL)
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return;
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tty_lock(tp);
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ttydisc_rint(tp, c, 0);
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ttydisc_rint_done(tp);
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tty_unlock(tp);
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}
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void
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terminal_input_special(struct terminal *tm, unsigned int k)
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{
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struct tty *tp;
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const char *str;
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tp = tm->tm_tty;
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if (tp == NULL)
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return;
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str = teken_get_sequence(&tm->tm_emulator, k);
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if (str == NULL)
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return;
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tty_lock(tp);
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ttydisc_rint_simple(tp, str, strlen(str));
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ttydisc_rint_done(tp);
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tty_unlock(tp);
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}
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/*
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* Binding with the TTY layer.
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*/
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static int
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termtty_open(struct tty *tp)
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{
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struct terminal *tm = tty_softc(tp);
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tm->tm_class->tc_opened(tm, 1);
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return (0);
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}
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static void
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termtty_close(struct tty *tp)
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{
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struct terminal *tm = tty_softc(tp);
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tm->tm_class->tc_opened(tm, 0);
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}
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static void
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termtty_outwakeup(struct tty *tp)
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{
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struct terminal *tm = tty_softc(tp);
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char obuf[128];
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size_t olen;
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unsigned int flags = 0;
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while ((olen = ttydisc_getc(tp, obuf, sizeof obuf)) > 0) {
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TERMINAL_LOCK_TTY(tm);
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if (!(tm->tm_flags & TF_MUTE)) {
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tm->tm_flags &= ~TF_BELL;
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teken_input(&tm->tm_emulator, obuf, olen);
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flags |= tm->tm_flags;
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}
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TERMINAL_UNLOCK_TTY(tm);
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}
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TERMINAL_LOCK_TTY(tm);
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if (!(tm->tm_flags & TF_MUTE))
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tm->tm_class->tc_done(tm);
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TERMINAL_UNLOCK_TTY(tm);
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if (flags & TF_BELL)
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tm->tm_class->tc_bell(tm);
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}
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static int
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termtty_ioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td)
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{
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struct terminal *tm = tty_softc(tp);
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int error;
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switch (cmd) {
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case CONS_GETINFO: {
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vid_info_t *vi = (vid_info_t *)data;
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const teken_pos_t *p;
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int fg, bg;
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if (vi->size != sizeof(vid_info_t))
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return (EINVAL);
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/* Already help the console driver by filling in some data. */
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p = teken_get_cursor(&tm->tm_emulator);
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vi->mv_row = p->tp_row;
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vi->mv_col = p->tp_col;
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p = teken_get_winsize(&tm->tm_emulator);
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vi->mv_rsz = p->tp_row;
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vi->mv_csz = p->tp_col;
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teken_get_defattr_cons25(&tm->tm_emulator, &fg, &bg);
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vi->mv_norm.fore = fg;
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vi->mv_norm.back = bg;
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/* XXX: keep vidcontrol happy; bold backgrounds. */
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vi->mv_rev.fore = bg;
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vi->mv_rev.back = fg & 0x7;
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break;
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}
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}
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/*
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* Unlike various other drivers, this driver will never
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* deallocate TTYs. This means it's safe to temporarily unlock
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* the TTY when handling ioctls.
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*/
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tty_unlock(tp);
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error = tm->tm_class->tc_ioctl(tm, cmd, data, td);
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tty_lock(tp);
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if ((error == 0) && (cmd == CONS_CLRHIST)) {
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/*
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* Scrollback history has been successfully cleared,
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* so reset the cursor position to the top left of the screen.
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*/
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teken_pos_t p;
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p.tp_row = 0;
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p.tp_col = 0;
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teken_set_cursor(&tm->tm_emulator, &p);
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}
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return (error);
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}
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static int
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termtty_mmap(struct tty *tp, vm_ooffset_t offset, vm_paddr_t * paddr,
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int nprot, vm_memattr_t *memattr)
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{
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struct terminal *tm = tty_softc(tp);
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return (tm->tm_class->tc_mmap(tm, offset, paddr, nprot, memattr));
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}
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/*
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* Binding with the kernel and debug console.
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*/
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static cn_probe_t termcn_cnprobe;
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static cn_init_t termcn_cninit;
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static cn_term_t termcn_cnterm;
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static cn_getc_t termcn_cngetc;
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static cn_putc_t termcn_cnputc;
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static cn_grab_t termcn_cngrab;
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static cn_ungrab_t termcn_cnungrab;
|
|
|
|
const struct consdev_ops termcn_cnops = {
|
|
.cn_probe = termcn_cnprobe,
|
|
.cn_init = termcn_cninit,
|
|
.cn_term = termcn_cnterm,
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|
.cn_getc = termcn_cngetc,
|
|
.cn_putc = termcn_cnputc,
|
|
.cn_grab = termcn_cngrab,
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|
.cn_ungrab = termcn_cnungrab,
|
|
};
|
|
|
|
void
|
|
termcn_cnregister(struct terminal *tm)
|
|
{
|
|
struct consdev *cp;
|
|
|
|
cp = tm->consdev;
|
|
if (cp == NULL) {
|
|
cp = malloc(sizeof(struct consdev), M_TERMINAL,
|
|
M_WAITOK|M_ZERO);
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|
cp->cn_ops = &termcn_cnops;
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|
cp->cn_arg = tm;
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|
cp->cn_pri = CN_INTERNAL;
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|
sprintf(cp->cn_name, "ttyv0");
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|
|
|
tm->tm_flags = TF_CONS;
|
|
tm->consdev = cp;
|
|
|
|
terminal_init(tm);
|
|
}
|
|
|
|
/* Attach terminal as console. */
|
|
cnadd(cp);
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|
}
|
|
|
|
static void
|
|
termcn_cngrab(struct consdev *cp)
|
|
{
|
|
struct terminal *tm = cp->cn_arg;
|
|
|
|
tm->tm_class->tc_cngrab(tm);
|
|
}
|
|
|
|
static void
|
|
termcn_cnungrab(struct consdev *cp)
|
|
{
|
|
struct terminal *tm = cp->cn_arg;
|
|
|
|
tm->tm_class->tc_cnungrab(tm);
|
|
}
|
|
|
|
static void
|
|
termcn_cnprobe(struct consdev *cp)
|
|
{
|
|
struct terminal *tm = cp->cn_arg;
|
|
|
|
if (tm == NULL) {
|
|
cp->cn_pri = CN_DEAD;
|
|
return;
|
|
}
|
|
|
|
tm->consdev = cp;
|
|
terminal_init(tm);
|
|
|
|
tm->tm_class->tc_cnprobe(tm, cp);
|
|
}
|
|
|
|
static void
|
|
termcn_cninit(struct consdev *cp)
|
|
{
|
|
|
|
}
|
|
|
|
static void
|
|
termcn_cnterm(struct consdev *cp)
|
|
{
|
|
|
|
}
|
|
|
|
static int
|
|
termcn_cngetc(struct consdev *cp)
|
|
{
|
|
struct terminal *tm = cp->cn_arg;
|
|
|
|
return (tm->tm_class->tc_cngetc(tm));
|
|
}
|
|
|
|
static void
|
|
termcn_cnputc(struct consdev *cp, int c)
|
|
{
|
|
struct terminal *tm = cp->cn_arg;
|
|
teken_attr_t backup;
|
|
char cv = c;
|
|
|
|
TERMINAL_LOCK_CONS(tm);
|
|
if (!(tm->tm_flags & TF_MUTE)) {
|
|
backup = *teken_get_curattr(&tm->tm_emulator);
|
|
teken_set_curattr(&tm->tm_emulator, &kernel_message);
|
|
teken_input(&tm->tm_emulator, &cv, 1);
|
|
teken_set_curattr(&tm->tm_emulator, &backup);
|
|
tm->tm_class->tc_done(tm);
|
|
}
|
|
TERMINAL_UNLOCK_CONS(tm);
|
|
}
|
|
|
|
/*
|
|
* Binding with the terminal emulator.
|
|
*/
|
|
|
|
static void
|
|
termteken_bell(void *softc)
|
|
{
|
|
struct terminal *tm = softc;
|
|
|
|
tm->tm_flags |= TF_BELL;
|
|
}
|
|
|
|
static void
|
|
termteken_cursor(void *softc, const teken_pos_t *p)
|
|
{
|
|
struct terminal *tm = softc;
|
|
|
|
tm->tm_class->tc_cursor(tm, p);
|
|
}
|
|
|
|
static void
|
|
termteken_putchar(void *softc, const teken_pos_t *p, teken_char_t c,
|
|
const teken_attr_t *a)
|
|
{
|
|
struct terminal *tm = softc;
|
|
|
|
tm->tm_class->tc_putchar(tm, p, TCHAR_CREATE(c, a));
|
|
}
|
|
|
|
static void
|
|
termteken_fill(void *softc, const teken_rect_t *r, teken_char_t c,
|
|
const teken_attr_t *a)
|
|
{
|
|
struct terminal *tm = softc;
|
|
|
|
tm->tm_class->tc_fill(tm, r, TCHAR_CREATE(c, a));
|
|
}
|
|
|
|
static void
|
|
termteken_copy(void *softc, const teken_rect_t *r, const teken_pos_t *p)
|
|
{
|
|
struct terminal *tm = softc;
|
|
|
|
tm->tm_class->tc_copy(tm, r, p);
|
|
}
|
|
|
|
static void
|
|
termteken_pre_input(void *softc)
|
|
{
|
|
struct terminal *tm = softc;
|
|
|
|
tm->tm_class->tc_pre_input(tm);
|
|
}
|
|
|
|
static void
|
|
termteken_post_input(void *softc)
|
|
{
|
|
struct terminal *tm = softc;
|
|
|
|
tm->tm_class->tc_post_input(tm);
|
|
}
|
|
|
|
static void
|
|
termteken_param(void *softc, int cmd, unsigned int arg)
|
|
{
|
|
struct terminal *tm = softc;
|
|
|
|
tm->tm_class->tc_param(tm, cmd, arg);
|
|
}
|
|
|
|
static void
|
|
termteken_respond(void *softc, const void *buf, size_t len)
|
|
{
|
|
#if 0
|
|
struct terminal *tm = softc;
|
|
struct tty *tp;
|
|
|
|
/*
|
|
* Only inject a response into the TTY if the data actually
|
|
* originated from the TTY.
|
|
*
|
|
* XXX: This cannot be done right now. The TTY could pick up
|
|
* other locks. It could also in theory cause loops, when the
|
|
* TTY performs echoing of a command that generates even more
|
|
* input.
|
|
*/
|
|
tp = tm->tm_tty;
|
|
if (tp == NULL)
|
|
return;
|
|
|
|
ttydisc_rint_simple(tp, buf, len);
|
|
ttydisc_rint_done(tp);
|
|
#endif
|
|
}
|