diff --git a/sys/dev/vt/vt_core.c b/sys/dev/vt/vt_core.c
index 2693c32d45be..fac1ad898db9 100644
--- a/sys/dev/vt/vt_core.c
+++ b/sys/dev/vt/vt_core.c
@@ -1,3173 +1,3179 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2009, 2013 The FreeBSD Foundation
*
* This software was developed by Ed Schouten under sponsorship from the
* FreeBSD Foundation.
*
* Portions of this software were developed by Oleksandr Rybalko
* under sponsorship from the FreeBSD Foundation.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/consio.h>
#include <sys/eventhandler.h>
#include <sys/fbio.h>
#include <sys/font.h>
#include <sys/kbio.h>
#include <sys/kdb.h>
#include <sys/kernel.h>
#include <sys/linker.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/power.h>
#include <sys/priv.h>
#include <sys/proc.h>
#include <sys/random.h>
#include <sys/reboot.h>
#include <sys/systm.h>
#include <sys/terminal.h>
#include <dev/kbd/kbdreg.h>
#include <dev/vt/vt.h>
#if defined(__i386__) || defined(__amd64__)
#include <machine/psl.h>
#include <machine/frame.h>
#endif
static int vtterm_cngrab_noswitch(struct vt_device *, struct vt_window *);
static int vtterm_cnungrab_noswitch(struct vt_device *, struct vt_window *);
static tc_bell_t vtterm_bell;
static tc_cursor_t vtterm_cursor;
static tc_putchar_t vtterm_putchar;
static tc_fill_t vtterm_fill;
static tc_copy_t vtterm_copy;
static tc_pre_input_t vtterm_pre_input;
static tc_post_input_t vtterm_post_input;
static tc_param_t vtterm_param;
static tc_done_t vtterm_done;
static tc_cnprobe_t vtterm_cnprobe;
static tc_cngetc_t vtterm_cngetc;
static tc_cngrab_t vtterm_cngrab;
static tc_cnungrab_t vtterm_cnungrab;
static tc_opened_t vtterm_opened;
static tc_ioctl_t vtterm_ioctl;
static tc_mmap_t vtterm_mmap;
const struct terminal_class vt_termclass = {
.tc_bell = vtterm_bell,
.tc_cursor = vtterm_cursor,
.tc_putchar = vtterm_putchar,
.tc_fill = vtterm_fill,
.tc_copy = vtterm_copy,
.tc_pre_input = vtterm_pre_input,
.tc_post_input = vtterm_post_input,
.tc_param = vtterm_param,
.tc_done = vtterm_done,
.tc_cnprobe = vtterm_cnprobe,
.tc_cngetc = vtterm_cngetc,
.tc_cngrab = vtterm_cngrab,
.tc_cnungrab = vtterm_cnungrab,
.tc_opened = vtterm_opened,
.tc_ioctl = vtterm_ioctl,
.tc_mmap = vtterm_mmap,
};
/*
* Use a constant timer of 25 Hz to redraw the screen.
*
* XXX: In theory we should only fire up the timer when there is really
* activity. Unfortunately we cannot always start timers. We really
* don't want to process kernel messages synchronously, because it
* really slows down the system.
*/
#define VT_TIMERFREQ 25
/* Bell pitch/duration. */
#define VT_BELLDURATION ((5 * hz + 99) / 100)
#define VT_BELLPITCH 800
#define VT_UNIT(vw) ((vw)->vw_device->vd_unit * VT_MAXWINDOWS + \
(vw)->vw_number)
static SYSCTL_NODE(_kern, OID_AUTO, vt, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
"vt(9) parameters");
static VT_SYSCTL_INT(enable_altgr, 1, "Enable AltGr key (Do not assume R.Alt as Alt)");
static VT_SYSCTL_INT(enable_bell, 1, "Enable bell");
static VT_SYSCTL_INT(debug, 0, "vt(9) debug level");
static VT_SYSCTL_INT(deadtimer, 15, "Time to wait busy process in VT_PROCESS mode");
static VT_SYSCTL_INT(suspendswitch, 1, "Switch to VT0 before suspend");
/* Allow to disable some keyboard combinations. */
static VT_SYSCTL_INT(kbd_halt, 1, "Enable halt keyboard combination. "
"See kbdmap(5) to configure.");
static VT_SYSCTL_INT(kbd_poweroff, 1, "Enable Power Off keyboard combination. "
"See kbdmap(5) to configure.");
static VT_SYSCTL_INT(kbd_reboot, 1, "Enable reboot keyboard combination. "
"See kbdmap(5) to configure (typically Ctrl-Alt-Delete).");
static VT_SYSCTL_INT(kbd_debug, 1, "Enable key combination to enter debugger. "
"See kbdmap(5) to configure (typically Ctrl-Alt-Esc).");
static VT_SYSCTL_INT(kbd_panic, 0, "Enable request to panic. "
"See kbdmap(5) to configure.");
/* Used internally, not a tunable. */
int vt_draw_logo_cpus;
VT_SYSCTL_INT(splash_cpu, 0, "Show logo CPUs during boot");
VT_SYSCTL_INT(splash_ncpu, 0, "Override number of logos displayed "
"(0 = do not override)");
VT_SYSCTL_INT(splash_cpu_style, 2, "Draw logo style "
"(0 = Alternate beastie, 1 = Beastie, 2 = Orb)");
VT_SYSCTL_INT(splash_cpu_duration, 10, "Hide logos after (seconds)");
static unsigned int vt_unit = 0;
static MALLOC_DEFINE(M_VT, "vt", "vt device");
struct vt_device *main_vd = &vt_consdev;
/* Boot logo. */
extern unsigned int vt_logo_width;
extern unsigned int vt_logo_height;
extern unsigned int vt_logo_depth;
extern unsigned char vt_logo_image[];
#ifndef DEV_SPLASH
#define vtterm_draw_cpu_logos(...) do {} while (0)
const unsigned int vt_logo_sprite_height;
#endif
/*
* Console font. vt_font_loader will be filled with font data passed
* by loader. If there is no font passed by boot loader, we use built in
* default.
*/
extern struct vt_font vt_font_default;
static struct vt_font vt_font_loader;
static struct vt_font *vt_font_assigned = &vt_font_default;
#ifndef SC_NO_CUTPASTE
extern struct vt_mouse_cursor vt_default_mouse_pointer;
#endif
static int signal_vt_rel(struct vt_window *);
static int signal_vt_acq(struct vt_window *);
static int finish_vt_rel(struct vt_window *, int, int *);
static int finish_vt_acq(struct vt_window *);
static int vt_window_switch(struct vt_window *);
static int vt_late_window_switch(struct vt_window *);
static int vt_proc_alive(struct vt_window *);
static void vt_resize(struct vt_device *);
static void vt_update_static(void *);
#ifndef SC_NO_CUTPASTE
static void vt_mouse_paste(void);
#endif
static void vt_suspend_handler(void *priv);
static void vt_resume_handler(void *priv);
SET_DECLARE(vt_drv_set, struct vt_driver);
#define _VTDEFH MAX(100, PIXEL_HEIGHT(VT_FB_MAX_HEIGHT))
#define _VTDEFW MAX(200, PIXEL_WIDTH(VT_FB_MAX_WIDTH))
struct terminal vt_consterm;
static struct vt_window vt_conswindow;
#ifndef SC_NO_CONSDRAWN
static term_char_t vt_consdrawn[PIXEL_HEIGHT(VT_FB_MAX_HEIGHT) * PIXEL_WIDTH(VT_FB_MAX_WIDTH)];
static term_color_t vt_consdrawnfg[PIXEL_HEIGHT(VT_FB_MAX_HEIGHT) * PIXEL_WIDTH(VT_FB_MAX_WIDTH)];
static term_color_t vt_consdrawnbg[PIXEL_HEIGHT(VT_FB_MAX_HEIGHT) * PIXEL_WIDTH(VT_FB_MAX_WIDTH)];
#endif
struct vt_device vt_consdev = {
.vd_driver = NULL,
.vd_softc = NULL,
.vd_prev_driver = NULL,
.vd_prev_softc = NULL,
.vd_flags = VDF_INVALID,
.vd_windows = { [VT_CONSWINDOW] = &vt_conswindow, },
.vd_curwindow = &vt_conswindow,
.vd_kbstate = 0,
#ifndef SC_NO_CUTPASTE
.vd_pastebuf = {
.vpb_buf = NULL,
.vpb_bufsz = 0,
.vpb_len = 0
},
.vd_mcursor = &vt_default_mouse_pointer,
.vd_mcursor_fg = TC_WHITE,
.vd_mcursor_bg = TC_BLACK,
#endif
#ifndef SC_NO_CONSDRAWN
.vd_drawn = vt_consdrawn,
.vd_drawnfg = vt_consdrawnfg,
.vd_drawnbg = vt_consdrawnbg,
#endif
};
static term_char_t vt_constextbuf[(_VTDEFW) * (VBF_DEFAULT_HISTORY_SIZE)];
static term_char_t *vt_constextbufrows[VBF_DEFAULT_HISTORY_SIZE];
static struct vt_window vt_conswindow = {
.vw_number = VT_CONSWINDOW,
.vw_flags = VWF_CONSOLE,
.vw_buf = {
.vb_buffer = &vt_constextbuf[0],
.vb_rows = &vt_constextbufrows[0],
.vb_history_size = VBF_DEFAULT_HISTORY_SIZE,
.vb_curroffset = 0,
.vb_roffset = 0,
.vb_flags = VBF_STATIC,
.vb_mark_start = {.tp_row = 0, .tp_col = 0,},
.vb_mark_end = {.tp_row = 0, .tp_col = 0,},
.vb_scr_size = {
.tp_row = _VTDEFH,
.tp_col = _VTDEFW,
},
},
.vw_device = &vt_consdev,
.vw_terminal = &vt_consterm,
.vw_kbdmode = K_XLATE,
.vw_grabbed = 0,
};
struct terminal vt_consterm = {
.tm_class = &vt_termclass,
.tm_softc = &vt_conswindow,
.tm_flags = TF_CONS,
};
static struct consdev vt_consterm_consdev = {
.cn_ops = &termcn_cnops,
.cn_arg = &vt_consterm,
.cn_name = "ttyv0",
};
/* Add to set of consoles. */
DATA_SET(cons_set, vt_consterm_consdev);
/*
* Right after kmem is done to allow early drivers to use locking and allocate
* memory.
*/
SYSINIT(vt_update_static, SI_SUB_KMEM, SI_ORDER_ANY, vt_update_static,
&vt_consdev);
/* Delay until all devices attached, to not waste time. */
SYSINIT(vt_early_cons, SI_SUB_INT_CONFIG_HOOKS, SI_ORDER_ANY, vt_upgrade,
&vt_consdev);
/* Initialize locks/mem depended members. */
static void
vt_update_static(void *dummy)
{
if (!vty_enabled(VTY_VT))
return;
if (main_vd->vd_driver != NULL)
printf("VT(%s): %s %ux%u\n", main_vd->vd_driver->vd_name,
(main_vd->vd_flags & VDF_TEXTMODE) ? "text" : "resolution",
main_vd->vd_width, main_vd->vd_height);
else
printf("VT: init without driver.\n");
mtx_init(&main_vd->vd_lock, "vtdev", NULL, MTX_DEF);
cv_init(&main_vd->vd_winswitch, "vtwswt");
}
static void
vt_schedule_flush(struct vt_device *vd, int ms)
{
if (ms <= 0)
/* Default to initial value. */
ms = 1000 / VT_TIMERFREQ;
callout_schedule(&vd->vd_timer, hz / (1000 / ms));
}
void
vt_resume_flush_timer(struct vt_window *vw, int ms)
{
struct vt_device *vd = vw->vw_device;
if (vd->vd_curwindow != vw)
return;
if (!(vd->vd_flags & VDF_ASYNC) ||
!atomic_cmpset_int(&vd->vd_timer_armed, 0, 1))
return;
vt_schedule_flush(vd, ms);
}
static void
vt_suspend_flush_timer(struct vt_device *vd)
{
/*
* As long as this function is called locked, callout_stop()
* has the same effect like callout_drain() with regard to
* preventing the callback function from executing.
*/
VT_LOCK_ASSERT(vd, MA_OWNED);
if (!(vd->vd_flags & VDF_ASYNC) ||
!atomic_cmpset_int(&vd->vd_timer_armed, 1, 0))
return;
callout_stop(&vd->vd_timer);
}
static void
vt_switch_timer(void *arg)
{
(void)vt_late_window_switch((struct vt_window *)arg);
}
static int
vt_save_kbd_mode(struct vt_window *vw, keyboard_t *kbd)
{
int mode, ret;
mode = 0;
ret = kbdd_ioctl(kbd, KDGKBMODE, (caddr_t)&mode);
if (ret == ENOIOCTL)
ret = ENODEV;
if (ret != 0)
return (ret);
vw->vw_kbdmode = mode;
return (0);
}
static int
vt_update_kbd_mode(struct vt_window *vw, keyboard_t *kbd)
{
int ret;
ret = kbdd_ioctl(kbd, KDSKBMODE, (caddr_t)&vw->vw_kbdmode);
if (ret == ENOIOCTL)
ret = ENODEV;
return (ret);
}
static int
vt_save_kbd_state(struct vt_window *vw, keyboard_t *kbd)
{
int state, ret;
state = 0;
ret = kbdd_ioctl(kbd, KDGKBSTATE, (caddr_t)&state);
if (ret == ENOIOCTL)
ret = ENODEV;
if (ret != 0)
return (ret);
vw->vw_kbdstate &= ~LOCK_MASK;
vw->vw_kbdstate |= state & LOCK_MASK;
return (0);
}
static int
vt_update_kbd_state(struct vt_window *vw, keyboard_t *kbd)
{
int state, ret;
state = vw->vw_kbdstate & LOCK_MASK;
ret = kbdd_ioctl(kbd, KDSKBSTATE, (caddr_t)&state);
if (ret == ENOIOCTL)
ret = ENODEV;
return (ret);
}
static int
vt_save_kbd_leds(struct vt_window *vw, keyboard_t *kbd)
{
int leds, ret;
leds = 0;
ret = kbdd_ioctl(kbd, KDGETLED, (caddr_t)&leds);
if (ret == ENOIOCTL)
ret = ENODEV;
if (ret != 0)
return (ret);
vw->vw_kbdstate &= ~LED_MASK;
vw->vw_kbdstate |= leds & LED_MASK;
return (0);
}
static int
vt_update_kbd_leds(struct vt_window *vw, keyboard_t *kbd)
{
int leds, ret;
leds = vw->vw_kbdstate & LED_MASK;
ret = kbdd_ioctl(kbd, KDSETLED, (caddr_t)&leds);
if (ret == ENOIOCTL)
ret = ENODEV;
return (ret);
}
static int
vt_window_preswitch(struct vt_window *vw, struct vt_window *curvw)
{
DPRINTF(40, "%s\n", __func__);
curvw->vw_switch_to = vw;
/* Set timer to allow switch in case when process hang. */
callout_reset(&vw->vw_proc_dead_timer, hz * vt_deadtimer,
vt_switch_timer, (void *)vw);
/* Notify process about vt switch attempt. */
DPRINTF(30, "%s: Notify process.\n", __func__);
signal_vt_rel(curvw);
return (0);
}
static int
vt_window_postswitch(struct vt_window *vw)
{
signal_vt_acq(vw);
return (0);
}
/* vt_late_window_switch will do VT switching for regular case. */
static int
vt_late_window_switch(struct vt_window *vw)
{
struct vt_window *curvw;
int ret;
callout_stop(&vw->vw_proc_dead_timer);
ret = vt_window_switch(vw);
if (ret != 0) {
/*
* If the switch hasn't happened, then return the VT
* to the current owner, if any.
*/
curvw = vw->vw_device->vd_curwindow;
if (curvw->vw_smode.mode == VT_PROCESS)
(void)vt_window_postswitch(curvw);
return (ret);
}
/* Notify owner process about terminal availability. */
if (vw->vw_smode.mode == VT_PROCESS) {
ret = vt_window_postswitch(vw);
}
return (ret);
}
/* Switch window. */
static int
vt_proc_window_switch(struct vt_window *vw)
{
struct vt_window *curvw;
struct vt_device *vd;
int ret;
/* Prevent switching to NULL */
if (vw == NULL) {
DPRINTF(30, "%s: Cannot switch: vw is NULL.", __func__);
return (EINVAL);
}
vd = vw->vw_device;
curvw = vd->vd_curwindow;
/* Check if virtual terminal is locked */
if (curvw->vw_flags & VWF_VTYLOCK)
return (EBUSY);
/* Check if switch already in progress */
if (curvw->vw_flags & VWF_SWWAIT_REL) {
/* Check if switching to same window */
if (curvw->vw_switch_to == vw) {
DPRINTF(30, "%s: Switch in progress to same vw.", __func__);
return (0); /* success */
}
DPRINTF(30, "%s: Switch in progress to different vw.", __func__);
return (EBUSY);
}
/* Avoid switching to already selected window */
if (vw == curvw) {
DPRINTF(30, "%s: Cannot switch: vw == curvw.", __func__);
return (0); /* success */
}
/*
* Early check for an attempt to switch to a non-functional VT.
* The same check is done in vt_window_switch(), but it's better
* to fail as early as possible to avoid needless pre-switch
* actions.
*/
VT_LOCK(vd);
if ((vw->vw_flags & (VWF_OPENED|VWF_CONSOLE)) == 0) {
VT_UNLOCK(vd);
return (EINVAL);
}
VT_UNLOCK(vd);
/* Ask current process permission to switch away. */
if (curvw->vw_smode.mode == VT_PROCESS) {
DPRINTF(30, "%s: VT_PROCESS ", __func__);
if (vt_proc_alive(curvw) == FALSE) {
DPRINTF(30, "Dead. Cleaning.");
/* Dead */
} else {
DPRINTF(30, "%s: Signaling process.\n", __func__);
/* Alive, try to ask him. */
ret = vt_window_preswitch(vw, curvw);
/* Wait for process answer or timeout. */
return (ret);
}
DPRINTF(30, "\n");
}
ret = vt_late_window_switch(vw);
return (ret);
}
/* Switch window ignoring process locking. */
static int
vt_window_switch(struct vt_window *vw)
{
struct vt_device *vd = vw->vw_device;
struct vt_window *curvw = vd->vd_curwindow;
keyboard_t *kbd;
if (kdb_active) {
/*
* When grabbing the console for the debugger, avoid
* locks as that can result in deadlock. While this
* could use try locks, that wouldn't really make a
* difference as there are sufficient barriers in
* debugger entry/exit to be equivalent to
* successfully try-locking here.
*/
if (curvw == vw)
return (0);
if (!(vw->vw_flags & (VWF_OPENED|VWF_CONSOLE)))
return (EINVAL);
vd->vd_curwindow = vw;
vd->vd_flags |= VDF_INVALID;
if (vd->vd_driver->vd_postswitch)
vd->vd_driver->vd_postswitch(vd);
return (0);
}
VT_LOCK(vd);
if (curvw == vw) {
- /* Nothing to do. */
+ /*
+ * Nothing to do, except ensure the driver has the opportunity to
+ * switch to console mode when panicking, making sure the panic
+ * is readable (even when a GUI was using ttyv0).
+ */
+ if ((kdb_active || panicstr) && vd->vd_driver->vd_postswitch)
+ vd->vd_driver->vd_postswitch(vd);
VT_UNLOCK(vd);
return (0);
}
if (!(vw->vw_flags & (VWF_OPENED|VWF_CONSOLE))) {
VT_UNLOCK(vd);
return (EINVAL);
}
vt_suspend_flush_timer(vd);
vd->vd_curwindow = vw;
vd->vd_flags |= VDF_INVALID;
cv_broadcast(&vd->vd_winswitch);
VT_UNLOCK(vd);
if (vd->vd_driver->vd_postswitch)
vd->vd_driver->vd_postswitch(vd);
vt_resume_flush_timer(vw, 0);
/* Restore per-window keyboard mode. */
mtx_lock(&Giant);
if ((kbd = vd->vd_keyboard) != NULL) {
if (curvw->vw_kbdmode == K_XLATE)
vt_save_kbd_state(curvw, kbd);
vt_update_kbd_mode(vw, kbd);
vt_update_kbd_state(vw, kbd);
}
mtx_unlock(&Giant);
DPRINTF(10, "%s(ttyv%d) done\n", __func__, vw->vw_number);
return (0);
}
void
vt_termsize(struct vt_device *vd, struct vt_font *vf, term_pos_t *size)
{
size->tp_row = vd->vd_height;
if (vt_draw_logo_cpus)
size->tp_row -= vt_logo_sprite_height;
size->tp_col = vd->vd_width;
if (vf != NULL) {
size->tp_row = MIN(size->tp_row / vf->vf_height,
PIXEL_HEIGHT(VT_FB_MAX_HEIGHT));
size->tp_col = MIN(size->tp_col / vf->vf_width,
PIXEL_WIDTH(VT_FB_MAX_WIDTH));
}
}
static inline void
vt_termrect(struct vt_device *vd, struct vt_font *vf, term_rect_t *rect)
{
rect->tr_begin.tp_row = rect->tr_begin.tp_col = 0;
if (vt_draw_logo_cpus)
rect->tr_begin.tp_row = vt_logo_sprite_height;
rect->tr_end.tp_row = vd->vd_height;
rect->tr_end.tp_col = vd->vd_width;
if (vf != NULL) {
rect->tr_begin.tp_row =
howmany(rect->tr_begin.tp_row, vf->vf_height);
rect->tr_end.tp_row = MIN(rect->tr_end.tp_row / vf->vf_height,
PIXEL_HEIGHT(VT_FB_MAX_HEIGHT));
rect->tr_end.tp_col = MIN(rect->tr_end.tp_col / vf->vf_width,
PIXEL_WIDTH(VT_FB_MAX_WIDTH));
}
}
void
vt_winsize(struct vt_device *vd, struct vt_font *vf, struct winsize *size)
{
size->ws_ypixel = vd->vd_height;
if (vt_draw_logo_cpus)
size->ws_ypixel -= vt_logo_sprite_height;
size->ws_row = size->ws_ypixel;
size->ws_col = size->ws_xpixel = vd->vd_width;
if (vf != NULL) {
size->ws_row = MIN(size->ws_row / vf->vf_height,
PIXEL_HEIGHT(VT_FB_MAX_HEIGHT));
size->ws_col = MIN(size->ws_col / vf->vf_width,
PIXEL_WIDTH(VT_FB_MAX_WIDTH));
}
}
void
vt_compute_drawable_area(struct vt_window *vw)
{
struct vt_device *vd;
struct vt_font *vf;
vt_axis_t height;
vd = vw->vw_device;
if (vw->vw_font == NULL) {
vw->vw_draw_area.tr_begin.tp_col = 0;
vw->vw_draw_area.tr_begin.tp_row = 0;
if (vt_draw_logo_cpus)
vw->vw_draw_area.tr_begin.tp_row = vt_logo_sprite_height;
vw->vw_draw_area.tr_end.tp_col = vd->vd_width;
vw->vw_draw_area.tr_end.tp_row = vd->vd_height;
return;
}
vf = vw->vw_font;
/*
* Compute the drawable area, so that the text is centered on
* the screen.
*/
height = vd->vd_height;
if (vt_draw_logo_cpus)
height -= vt_logo_sprite_height;
vw->vw_draw_area.tr_begin.tp_col = (vd->vd_width % vf->vf_width) / 2;
vw->vw_draw_area.tr_begin.tp_row = (height % vf->vf_height) / 2;
if (vt_draw_logo_cpus)
vw->vw_draw_area.tr_begin.tp_row += vt_logo_sprite_height;
vw->vw_draw_area.tr_end.tp_col = vw->vw_draw_area.tr_begin.tp_col +
rounddown(vd->vd_width, vf->vf_width);
vw->vw_draw_area.tr_end.tp_row = vw->vw_draw_area.tr_begin.tp_row +
rounddown(height, vf->vf_height);
}
static void
vt_scroll(struct vt_window *vw, int offset, int whence)
{
int diff;
term_pos_t size;
if ((vw->vw_flags & VWF_SCROLL) == 0)
return;
vt_termsize(vw->vw_device, vw->vw_font, &size);
diff = vthistory_seek(&vw->vw_buf, offset, whence);
if (diff)
vw->vw_device->vd_flags |= VDF_INVALID;
vt_resume_flush_timer(vw, 0);
}
static int
vt_machine_kbdevent(struct vt_device *vd, int c)
{
switch (c) {
case SPCLKEY | DBG: /* kbdmap(5) keyword `debug`. */
if (vt_kbd_debug) {
kdb_enter(KDB_WHY_BREAK, "manual escape to debugger");
#if VT_ALT_TO_ESC_HACK
/*
* There's an unfortunate conflict between SPCLKEY|DBG
* and VT_ALT_TO_ESC_HACK. Just assume they didn't mean
* it if we got to here.
*/
vd->vd_kbstate &= ~ALKED;
#endif
}
return (1);
case SPCLKEY | HALT: /* kbdmap(5) keyword `halt`. */
if (vt_kbd_halt)
shutdown_nice(RB_HALT);
return (1);
case SPCLKEY | PASTE: /* kbdmap(5) keyword `paste`. */
#ifndef SC_NO_CUTPASTE
/* Insert text from cut-paste buffer. */
vt_mouse_paste();
#endif
break;
case SPCLKEY | PDWN: /* kbdmap(5) keyword `pdwn`. */
if (vt_kbd_poweroff)
shutdown_nice(RB_HALT|RB_POWEROFF);
return (1);
case SPCLKEY | PNC: /* kbdmap(5) keyword `panic`. */
/*
* Request to immediate panic if sysctl
* kern.vt.enable_panic_key allow it.
*/
if (vt_kbd_panic)
panic("Forced by the panic key");
return (1);
case SPCLKEY | RBT: /* kbdmap(5) keyword `boot`. */
if (vt_kbd_reboot)
shutdown_nice(RB_AUTOBOOT);
return (1);
case SPCLKEY | SPSC: /* kbdmap(5) keyword `spsc`. */
/* Force activatation/deactivation of the screen saver. */
/* TODO */
return (1);
case SPCLKEY | STBY: /* XXX Not present in kbdcontrol parser. */
/* Put machine into Stand-By mode. */
power_pm_suspend(POWER_SLEEP_STATE_STANDBY);
return (1);
case SPCLKEY | SUSP: /* kbdmap(5) keyword `susp`. */
/* Suspend machine. */
power_pm_suspend(POWER_SLEEP_STATE_SUSPEND);
return (1);
}
return (0);
}
static void
vt_scrollmode_kbdevent(struct vt_window *vw, int c, int console)
{
struct vt_device *vd;
term_pos_t size;
vd = vw->vw_device;
/* Only special keys handled in ScrollLock mode */
if ((c & SPCLKEY) == 0)
return;
c &= ~SPCLKEY;
if (console == 0) {
if (c >= F_SCR && c <= MIN(L_SCR, F_SCR + VT_MAXWINDOWS - 1)) {
vw = vd->vd_windows[c - F_SCR];
vt_proc_window_switch(vw);
return;
}
VT_LOCK(vd);
}
switch (c) {
case SLK: {
/* Turn scrolling off. */
vt_scroll(vw, 0, VHS_END);
VTBUF_SLCK_DISABLE(&vw->vw_buf);
vw->vw_flags &= ~VWF_SCROLL;
break;
}
case FKEY | F(49): /* Home key. */
vt_scroll(vw, 0, VHS_SET);
break;
case FKEY | F(50): /* Arrow up. */
vt_scroll(vw, -1, VHS_CUR);
break;
case FKEY | F(51): /* Page up. */
vt_termsize(vd, vw->vw_font, &size);
vt_scroll(vw, -size.tp_row, VHS_CUR);
break;
case FKEY | F(57): /* End key. */
vt_scroll(vw, 0, VHS_END);
break;
case FKEY | F(58): /* Arrow down. */
vt_scroll(vw, 1, VHS_CUR);
break;
case FKEY | F(59): /* Page down. */
vt_termsize(vd, vw->vw_font, &size);
vt_scroll(vw, size.tp_row, VHS_CUR);
break;
}
if (console == 0)
VT_UNLOCK(vd);
}
static int
vt_processkey(keyboard_t *kbd, struct vt_device *vd, int c)
{
struct vt_window *vw = vd->vd_curwindow;
random_harvest_queue(&c, sizeof(c), RANDOM_KEYBOARD);
#if VT_ALT_TO_ESC_HACK
if (c & RELKEY) {
switch (c & ~RELKEY) {
case (SPCLKEY | RALT):
if (vt_enable_altgr != 0)
break;
case (SPCLKEY | LALT):
vd->vd_kbstate &= ~ALKED;
}
/* Other keys ignored for RELKEY event. */
return (0);
} else {
switch (c & ~RELKEY) {
case (SPCLKEY | RALT):
if (vt_enable_altgr != 0)
break;
case (SPCLKEY | LALT):
vd->vd_kbstate |= ALKED;
}
}
#else
if (c & RELKEY)
/* Other keys ignored for RELKEY event. */
return (0);
#endif
if (vt_machine_kbdevent(vd, c))
return (0);
if (vw->vw_flags & VWF_SCROLL) {
vt_scrollmode_kbdevent(vw, c, 0/* Not a console */);
/* Scroll mode keys handled, nothing to do more. */
return (0);
}
if (c & SPCLKEY) {
c &= ~SPCLKEY;
if (c >= F_SCR && c <= MIN(L_SCR, F_SCR + VT_MAXWINDOWS - 1)) {
vw = vd->vd_windows[c - F_SCR];
vt_proc_window_switch(vw);
return (0);
}
switch (c) {
case NEXT:
/* Switch to next VT. */
c = (vw->vw_number + 1) % VT_MAXWINDOWS;
vw = vd->vd_windows[c];
vt_proc_window_switch(vw);
return (0);
case PREV:
/* Switch to previous VT. */
c = (vw->vw_number + VT_MAXWINDOWS - 1) % VT_MAXWINDOWS;
vw = vd->vd_windows[c];
vt_proc_window_switch(vw);
return (0);
case SLK: {
vt_save_kbd_state(vw, kbd);
VT_LOCK(vd);
if (vw->vw_kbdstate & SLKED) {
/* Turn scrolling on. */
vw->vw_flags |= VWF_SCROLL;
VTBUF_SLCK_ENABLE(&vw->vw_buf);
} else {
/* Turn scrolling off. */
vw->vw_flags &= ~VWF_SCROLL;
VTBUF_SLCK_DISABLE(&vw->vw_buf);
vt_scroll(vw, 0, VHS_END);
}
VT_UNLOCK(vd);
break;
}
case FKEY | F(1): case FKEY | F(2): case FKEY | F(3):
case FKEY | F(4): case FKEY | F(5): case FKEY | F(6):
case FKEY | F(7): case FKEY | F(8): case FKEY | F(9):
case FKEY | F(10): case FKEY | F(11): case FKEY | F(12):
/* F1 through F12 keys. */
terminal_input_special(vw->vw_terminal,
TKEY_F1 + c - (FKEY | F(1)));
break;
case FKEY | F(49): /* Home key. */
terminal_input_special(vw->vw_terminal, TKEY_HOME);
break;
case FKEY | F(50): /* Arrow up. */
terminal_input_special(vw->vw_terminal, TKEY_UP);
break;
case FKEY | F(51): /* Page up. */
terminal_input_special(vw->vw_terminal, TKEY_PAGE_UP);
break;
case FKEY | F(53): /* Arrow left. */
terminal_input_special(vw->vw_terminal, TKEY_LEFT);
break;
case FKEY | F(55): /* Arrow right. */
terminal_input_special(vw->vw_terminal, TKEY_RIGHT);
break;
case FKEY | F(57): /* End key. */
terminal_input_special(vw->vw_terminal, TKEY_END);
break;
case FKEY | F(58): /* Arrow down. */
terminal_input_special(vw->vw_terminal, TKEY_DOWN);
break;
case FKEY | F(59): /* Page down. */
terminal_input_special(vw->vw_terminal, TKEY_PAGE_DOWN);
break;
case FKEY | F(60): /* Insert key. */
terminal_input_special(vw->vw_terminal, TKEY_INSERT);
break;
case FKEY | F(61): /* Delete key. */
terminal_input_special(vw->vw_terminal, TKEY_DELETE);
break;
}
} else if (KEYFLAGS(c) == 0) {
/* Don't do UTF-8 conversion when doing raw mode. */
if (vw->vw_kbdmode == K_XLATE) {
#if VT_ALT_TO_ESC_HACK
if (vd->vd_kbstate & ALKED) {
/*
* Prepend ESC sequence if one of ALT keys down.
*/
terminal_input_char(vw->vw_terminal, 0x1b);
}
#endif
#if defined(KDB)
kdb_alt_break(c, &vd->vd_altbrk);
#endif
terminal_input_char(vw->vw_terminal, KEYCHAR(c));
} else
terminal_input_raw(vw->vw_terminal, c);
}
return (0);
}
static int
vt_kbdevent(keyboard_t *kbd, int event, void *arg)
{
struct vt_device *vd = arg;
int c;
switch (event) {
case KBDIO_KEYINPUT:
break;
case KBDIO_UNLOADING:
mtx_lock(&Giant);
vd->vd_keyboard = NULL;
kbd_release(kbd, (void *)vd);
mtx_unlock(&Giant);
return (0);
default:
return (EINVAL);
}
while ((c = kbdd_read_char(kbd, 0)) != NOKEY)
vt_processkey(kbd, vd, c);
return (0);
}
static int
vt_allocate_keyboard(struct vt_device *vd)
{
int grabbed, i, idx0, idx;
keyboard_t *k0, *k;
keyboard_info_t ki;
/*
* If vt_upgrade() happens while the console is grabbed, we are
* potentially going to switch keyboard devices while the keyboard is in
* use. Unwind the grabbing of the current keyboard first, then we will
* re-grab the new keyboard below, before we return.
*/
if (vd->vd_curwindow == &vt_conswindow) {
grabbed = vd->vd_curwindow->vw_grabbed;
for (i = 0; i < grabbed; ++i)
vtterm_cnungrab_noswitch(vd, vd->vd_curwindow);
}
idx0 = kbd_allocate("kbdmux", -1, vd, vt_kbdevent, vd);
if (idx0 >= 0) {
DPRINTF(20, "%s: kbdmux allocated, idx = %d\n", __func__, idx0);
k0 = kbd_get_keyboard(idx0);
for (idx = kbd_find_keyboard2("*", -1, 0);
idx != -1;
idx = kbd_find_keyboard2("*", -1, idx + 1)) {
k = kbd_get_keyboard(idx);
if (idx == idx0 || KBD_IS_BUSY(k))
continue;
bzero(&ki, sizeof(ki));
strncpy(ki.kb_name, k->kb_name, sizeof(ki.kb_name));
ki.kb_name[sizeof(ki.kb_name) - 1] = '\0';
ki.kb_unit = k->kb_unit;
kbdd_ioctl(k0, KBADDKBD, (caddr_t) &ki);
}
} else {
DPRINTF(20, "%s: no kbdmux allocated\n", __func__);
idx0 = kbd_allocate("*", -1, vd, vt_kbdevent, vd);
if (idx0 < 0) {
DPRINTF(10, "%s: No keyboard found.\n", __func__);
return (-1);
}
k0 = kbd_get_keyboard(idx0);
}
vd->vd_keyboard = k0;
DPRINTF(20, "%s: vd_keyboard = %d\n", __func__,
vd->vd_keyboard->kb_index);
if (vd->vd_curwindow == &vt_conswindow) {
for (i = 0; i < grabbed; ++i)
vtterm_cngrab_noswitch(vd, vd->vd_curwindow);
}
return (idx0);
}
static void
vtterm_bell(struct terminal *tm)
{
struct vt_window *vw = tm->tm_softc;
struct vt_device *vd = vw->vw_device;
if (!vt_enable_bell)
return;
if (vd->vd_flags & VDF_QUIET_BELL)
return;
sysbeep(1193182 / VT_BELLPITCH, VT_BELLDURATION);
}
static void
vtterm_beep(struct terminal *tm, u_int param)
{
u_int freq, period;
if (!vt_enable_bell)
return;
if ((param == 0) || ((param & 0xffff) == 0)) {
vtterm_bell(tm);
return;
}
period = ((param >> 16) & 0xffff) * hz / 1000;
freq = 1193182 / (param & 0xffff);
sysbeep(freq, period);
}
static void
vtterm_cursor(struct terminal *tm, const term_pos_t *p)
{
struct vt_window *vw = tm->tm_softc;
vtbuf_cursor_position(&vw->vw_buf, p);
}
static void
vtterm_putchar(struct terminal *tm, const term_pos_t *p, term_char_t c)
{
struct vt_window *vw = tm->tm_softc;
vtbuf_putchar(&vw->vw_buf, p, c);
}
static void
vtterm_fill(struct terminal *tm, const term_rect_t *r, term_char_t c)
{
struct vt_window *vw = tm->tm_softc;
vtbuf_fill(&vw->vw_buf, r, c);
}
static void
vtterm_copy(struct terminal *tm, const term_rect_t *r,
const term_pos_t *p)
{
struct vt_window *vw = tm->tm_softc;
vtbuf_copy(&vw->vw_buf, r, p);
}
static void
vtterm_param(struct terminal *tm, int cmd, unsigned int arg)
{
struct vt_window *vw = tm->tm_softc;
switch (cmd) {
case TP_SETLOCALCURSOR:
/*
* 0 means normal (usually block), 1 means hidden, and
* 2 means blinking (always block) for compatibility with
* syscons. We don't support any changes except hiding,
* so must map 2 to 0.
*/
arg = (arg == 1) ? 0 : 1;
/* FALLTHROUGH */
case TP_SHOWCURSOR:
vtbuf_cursor_visibility(&vw->vw_buf, arg);
vt_resume_flush_timer(vw, 0);
break;
case TP_MOUSE:
vw->vw_mouse_level = arg;
break;
}
}
void
vt_determine_colors(term_char_t c, int cursor,
term_color_t *fg, term_color_t *bg)
{
term_color_t tmp;
int invert;
invert = 0;
*fg = TCHAR_FGCOLOR(c);
if (TCHAR_FORMAT(c) & TF_BOLD)
*fg = TCOLOR_LIGHT(*fg);
*bg = TCHAR_BGCOLOR(c);
if (TCHAR_FORMAT(c) & TF_BLINK)
*bg = TCOLOR_LIGHT(*bg);
if (TCHAR_FORMAT(c) & TF_REVERSE)
invert ^= 1;
if (cursor)
invert ^= 1;
if (invert) {
tmp = *fg;
*fg = *bg;
*bg = tmp;
}
}
#ifndef SC_NO_CUTPASTE
int
vt_is_cursor_in_area(const struct vt_device *vd, const term_rect_t *area)
{
unsigned int mx, my;
/*
* We use the cursor position saved during the current refresh,
* in case the cursor moved since.
*/
mx = vd->vd_mx_drawn + vd->vd_curwindow->vw_draw_area.tr_begin.tp_col;
my = vd->vd_my_drawn + vd->vd_curwindow->vw_draw_area.tr_begin.tp_row;
if (mx >= area->tr_end.tp_col ||
mx + vd->vd_mcursor->width <= area->tr_begin.tp_col ||
my >= area->tr_end.tp_row ||
my + vd->vd_mcursor->height <= area->tr_begin.tp_row)
return (0);
return (1);
}
static void
vt_mark_mouse_position_as_dirty(struct vt_device *vd, int locked)
{
term_rect_t area;
struct vt_window *vw;
struct vt_font *vf;
int x, y;
vw = vd->vd_curwindow;
vf = vw->vw_font;
x = vd->vd_mx_drawn;
y = vd->vd_my_drawn;
if (vf != NULL) {
area.tr_begin.tp_col = x / vf->vf_width;
area.tr_begin.tp_row = y / vf->vf_height;
area.tr_end.tp_col =
((x + vd->vd_mcursor->width) / vf->vf_width) + 1;
area.tr_end.tp_row =
((y + vd->vd_mcursor->height) / vf->vf_height) + 1;
} else {
/*
* No font loaded (ie. vt_vga operating in textmode).
*
* FIXME: This fake area needs to be revisited once the
* mouse cursor is supported in vt_vga's textmode.
*/
area.tr_begin.tp_col = x;
area.tr_begin.tp_row = y;
area.tr_end.tp_col = x + 2;
area.tr_end.tp_row = y + 2;
}
if (!locked)
vtbuf_lock(&vw->vw_buf);
if (vd->vd_driver->vd_invalidate_text)
vd->vd_driver->vd_invalidate_text(vd, &area);
vtbuf_dirty(&vw->vw_buf, &area);
if (!locked)
vtbuf_unlock(&vw->vw_buf);
}
#endif
static void
vt_set_border(struct vt_device *vd, const term_rect_t *area,
term_color_t c)
{
vd_drawrect_t *drawrect = vd->vd_driver->vd_drawrect;
if (drawrect == NULL)
return;
/* Top bar */
if (area->tr_begin.tp_row > 0)
drawrect(vd, 0, 0, vd->vd_width - 1,
area->tr_begin.tp_row - 1, 1, c);
/* Left bar */
if (area->tr_begin.tp_col > 0)
drawrect(vd, 0, area->tr_begin.tp_row,
area->tr_begin.tp_col - 1, area->tr_end.tp_row - 1, 1, c);
/* Right bar */
if (area->tr_end.tp_col < vd->vd_width)
drawrect(vd, area->tr_end.tp_col, area->tr_begin.tp_row,
vd->vd_width - 1, area->tr_end.tp_row - 1, 1, c);
/* Bottom bar */
if (area->tr_end.tp_row < vd->vd_height)
drawrect(vd, 0, area->tr_end.tp_row, vd->vd_width - 1,
vd->vd_height - 1, 1, c);
}
static int
vt_flush(struct vt_device *vd)
{
struct vt_window *vw;
struct vt_font *vf;
term_rect_t tarea;
#ifndef SC_NO_CUTPASTE
int cursor_was_shown, cursor_moved;
#endif
vw = vd->vd_curwindow;
if (vw == NULL)
return (0);
if (vd->vd_flags & VDF_SPLASH || vw->vw_flags & VWF_BUSY)
return (0);
vf = vw->vw_font;
if (((vd->vd_flags & VDF_TEXTMODE) == 0) && (vf == NULL))
return (0);
vtbuf_lock(&vw->vw_buf);
#ifndef SC_NO_CUTPASTE
cursor_was_shown = vd->vd_mshown;
cursor_moved = (vd->vd_mx != vd->vd_mx_drawn ||
vd->vd_my != vd->vd_my_drawn);
/* Check if the cursor should be displayed or not. */
if ((vd->vd_flags & VDF_MOUSECURSOR) && /* Mouse support enabled. */
!(vw->vw_flags & VWF_MOUSE_HIDE) && /* Cursor displayed. */
!kdb_active && !KERNEL_PANICKED()) { /* DDB inactive. */
vd->vd_mshown = 1;
} else {
vd->vd_mshown = 0;
}
/*
* If the cursor changed display state or moved, we must mark
* the old position as dirty, so that it's erased.
*/
if (cursor_was_shown != vd->vd_mshown ||
(vd->vd_mshown && cursor_moved))
vt_mark_mouse_position_as_dirty(vd, true);
/*
* Save position of the mouse cursor. It's used by backends to
* know where to draw the cursor and during the next refresh to
* erase the previous position.
*/
vd->vd_mx_drawn = vd->vd_mx;
vd->vd_my_drawn = vd->vd_my;
/*
* If the cursor is displayed and has moved since last refresh,
* mark the new position as dirty.
*/
if (vd->vd_mshown && cursor_moved)
vt_mark_mouse_position_as_dirty(vd, true);
#endif
vtbuf_undirty(&vw->vw_buf, &tarea);
/* Force a full redraw when the screen contents might be invalid. */
if (vd->vd_flags & (VDF_INVALID | VDF_SUSPENDED)) {
const teken_attr_t *a;
vd->vd_flags &= ~VDF_INVALID;
a = teken_get_curattr(&vw->vw_terminal->tm_emulator);
vt_set_border(vd, &vw->vw_draw_area, a->ta_bgcolor);
vt_termrect(vd, vf, &tarea);
if (vd->vd_driver->vd_invalidate_text)
vd->vd_driver->vd_invalidate_text(vd, &tarea);
if (vt_draw_logo_cpus)
vtterm_draw_cpu_logos(vd);
}
if (tarea.tr_begin.tp_col < tarea.tr_end.tp_col) {
vd->vd_driver->vd_bitblt_text(vd, vw, &tarea);
vtbuf_unlock(&vw->vw_buf);
return (1);
}
vtbuf_unlock(&vw->vw_buf);
return (0);
}
static void
vt_timer(void *arg)
{
struct vt_device *vd;
int changed;
vd = arg;
/* Update screen if required. */
changed = vt_flush(vd);
/* Schedule for next update. */
if (changed)
vt_schedule_flush(vd, 0);
else
vd->vd_timer_armed = 0;
}
static void
vtterm_pre_input(struct terminal *tm)
{
struct vt_window *vw = tm->tm_softc;
vtbuf_lock(&vw->vw_buf);
}
static void
vtterm_post_input(struct terminal *tm)
{
struct vt_window *vw = tm->tm_softc;
vtbuf_unlock(&vw->vw_buf);
vt_resume_flush_timer(vw, 0);
}
static void
vtterm_done(struct terminal *tm)
{
struct vt_window *vw = tm->tm_softc;
struct vt_device *vd = vw->vw_device;
if (kdb_active || KERNEL_PANICKED()) {
/* Switch to the debugger. */
if (vd->vd_curwindow != vw) {
vd->vd_curwindow = vw;
vd->vd_flags |= VDF_INVALID;
if (vd->vd_driver->vd_postswitch)
vd->vd_driver->vd_postswitch(vd);
}
vd->vd_flags &= ~VDF_SPLASH;
vt_flush(vd);
} else if (!(vd->vd_flags & VDF_ASYNC)) {
vt_flush(vd);
}
}
#ifdef DEV_SPLASH
static void
vtterm_splash(struct vt_device *vd)
{
vt_axis_t top, left;
/* Display a nice boot splash. */
if (!(vd->vd_flags & VDF_TEXTMODE) && (boothowto & RB_MUTE)) {
top = (vd->vd_height - vt_logo_height) / 2;
left = (vd->vd_width - vt_logo_width) / 2;
switch (vt_logo_depth) {
case 1:
/* XXX: Unhardcode colors! */
vd->vd_driver->vd_bitblt_bmp(vd, vd->vd_curwindow,
vt_logo_image, NULL, vt_logo_width, vt_logo_height,
left, top, TC_WHITE, TC_BLACK);
}
vd->vd_flags |= VDF_SPLASH;
}
}
#endif
static struct vt_font *
parse_font_info_static(struct font_info *fi)
{
struct vt_font *vfp;
uintptr_t ptr;
uint32_t checksum;
if (fi == NULL)
return (NULL);
ptr = (uintptr_t)fi;
/*
* Compute and verify checksum. The total sum of all the fields
* must be 0.
*/
checksum = fi->fi_width;
checksum += fi->fi_height;
checksum += fi->fi_bitmap_size;
for (unsigned i = 0; i < VFNT_MAPS; i++)
checksum += fi->fi_map_count[i];
if (checksum + fi->fi_checksum != 0)
return (NULL);
ptr += sizeof(struct font_info);
ptr = roundup2(ptr, 8);
vfp = &vt_font_loader;
vfp->vf_height = fi->fi_height;
vfp->vf_width = fi->fi_width;
/* This is default font, set refcount 1 to disable removal. */
vfp->vf_refcount = 1;
for (unsigned i = 0; i < VFNT_MAPS; i++) {
if (fi->fi_map_count[i] == 0)
continue;
vfp->vf_map_count[i] = fi->fi_map_count[i];
vfp->vf_map[i] = (vfnt_map_t *)ptr;
ptr += (fi->fi_map_count[i] * sizeof(vfnt_map_t));
ptr = roundup2(ptr, 8);
}
vfp->vf_bytes = (uint8_t *)ptr;
return (vfp);
}
/*
* Set up default font with allocated data structures.
* However, we can not set refcount here, because it is already set and
* incremented in vtterm_cnprobe() to avoid being released by font load from
* userland.
*/
static struct vt_font *
parse_font_info(struct font_info *fi)
{
struct vt_font *vfp;
uintptr_t ptr;
uint32_t checksum;
size_t size;
if (fi == NULL)
return (NULL);
ptr = (uintptr_t)fi;
/*
* Compute and verify checksum. The total sum of all the fields
* must be 0.
*/
checksum = fi->fi_width;
checksum += fi->fi_height;
checksum += fi->fi_bitmap_size;
for (unsigned i = 0; i < VFNT_MAPS; i++)
checksum += fi->fi_map_count[i];
if (checksum + fi->fi_checksum != 0)
return (NULL);
ptr += sizeof(struct font_info);
ptr = roundup2(ptr, 8);
vfp = &vt_font_loader;
vfp->vf_height = fi->fi_height;
vfp->vf_width = fi->fi_width;
for (unsigned i = 0; i < VFNT_MAPS; i++) {
if (fi->fi_map_count[i] == 0)
continue;
vfp->vf_map_count[i] = fi->fi_map_count[i];
size = fi->fi_map_count[i] * sizeof(vfnt_map_t);
vfp->vf_map[i] = malloc(size, M_VT, M_WAITOK | M_ZERO);
bcopy((vfnt_map_t *)ptr, vfp->vf_map[i], size);
ptr += size;
ptr = roundup2(ptr, 8);
}
vfp->vf_bytes = malloc(fi->fi_bitmap_size, M_VT, M_WAITOK | M_ZERO);
bcopy((uint8_t *)ptr, vfp->vf_bytes, fi->fi_bitmap_size);
return (vfp);
}
static void
vt_init_font(void *arg)
{
caddr_t kmdp;
struct font_info *fi;
struct vt_font *font;
kmdp = preload_search_by_type("elf kernel");
if (kmdp == NULL)
kmdp = preload_search_by_type("elf64 kernel");
fi = MD_FETCH(kmdp, MODINFOMD_FONT, struct font_info *);
font = parse_font_info(fi);
if (font != NULL)
vt_font_assigned = font;
}
SYSINIT(vt_init_font, SI_SUB_KMEM, SI_ORDER_ANY, vt_init_font, &vt_consdev);
static void
vt_init_font_static(void)
{
caddr_t kmdp;
struct font_info *fi;
struct vt_font *font;
kmdp = preload_search_by_type("elf kernel");
if (kmdp == NULL)
kmdp = preload_search_by_type("elf64 kernel");
fi = MD_FETCH(kmdp, MODINFOMD_FONT, struct font_info *);
font = parse_font_info_static(fi);
if (font != NULL)
vt_font_assigned = font;
}
static void
vtterm_cnprobe(struct terminal *tm, struct consdev *cp)
{
struct vt_driver *vtd, **vtdlist, *vtdbest = NULL;
struct vt_window *vw = tm->tm_softc;
struct vt_device *vd = vw->vw_device;
struct winsize wsz;
const term_attr_t *a;
if (!vty_enabled(VTY_VT))
return;
if (vd->vd_flags & VDF_INITIALIZED)
/* Initialization already done. */
return;
SET_FOREACH(vtdlist, vt_drv_set) {
vtd = *vtdlist;
if (vtd->vd_probe == NULL)
continue;
if (vtd->vd_probe(vd) == CN_DEAD)
continue;
if ((vtdbest == NULL) ||
(vtd->vd_priority > vtdbest->vd_priority))
vtdbest = vtd;
}
if (vtdbest == NULL) {
cp->cn_pri = CN_DEAD;
vd->vd_flags |= VDF_DEAD;
} else {
vd->vd_driver = vtdbest;
cp->cn_pri = vd->vd_driver->vd_init(vd);
}
/* Check if driver's vt_init return CN_DEAD. */
if (cp->cn_pri == CN_DEAD) {
vd->vd_flags |= VDF_DEAD;
}
/* Initialize any early-boot keyboard drivers */
kbd_configure(KB_CONF_PROBE_ONLY);
vd->vd_unit = atomic_fetchadd_int(&vt_unit, 1);
vd->vd_windows[VT_CONSWINDOW] = vw;
sprintf(cp->cn_name, "ttyv%r", VT_UNIT(vw));
vt_init_font_static();
/* Attach default font if not in TEXTMODE. */
if ((vd->vd_flags & VDF_TEXTMODE) == 0) {
vw->vw_font = vtfont_ref(vt_font_assigned);
vt_compute_drawable_area(vw);
}
/*
* The original screen size was faked (_VTDEFW x _VTDEFH). Now
* that we have the real viewable size, fix it in the static
* buffer.
*/
if (vd->vd_width != 0 && vd->vd_height != 0)
vt_termsize(vd, vw->vw_font, &vw->vw_buf.vb_scr_size);
/* We need to access terminal attributes from vtbuf */
vw->vw_buf.vb_terminal = tm;
vtbuf_init_early(&vw->vw_buf);
vt_winsize(vd, vw->vw_font, &wsz);
a = teken_get_curattr(&tm->tm_emulator);
terminal_set_winsize_blank(tm, &wsz, 1, a);
if (vtdbest != NULL) {
#ifdef DEV_SPLASH
if (!vt_splash_cpu)
vtterm_splash(vd);
#endif
vd->vd_flags |= VDF_INITIALIZED;
}
}
static int
vtterm_cngetc(struct terminal *tm)
{
struct vt_window *vw = tm->tm_softc;
struct vt_device *vd = vw->vw_device;
keyboard_t *kbd;
u_int c;
if (vw->vw_kbdsq && *vw->vw_kbdsq)
return (*vw->vw_kbdsq++);
/* Make sure the splash screen is not there. */
if (vd->vd_flags & VDF_SPLASH) {
/* Remove splash */
vd->vd_flags &= ~VDF_SPLASH;
/* Mark screen as invalid to force update */
vd->vd_flags |= VDF_INVALID;
vt_flush(vd);
}
/* Stripped down keyboard handler. */
if ((kbd = vd->vd_keyboard) == NULL)
return (-1);
/* Force keyboard input mode to K_XLATE */
vw->vw_kbdmode = K_XLATE;
vt_update_kbd_mode(vw, kbd);
/* Switch the keyboard to polling to make it work here. */
kbdd_poll(kbd, TRUE);
c = kbdd_read_char(kbd, 0);
kbdd_poll(kbd, FALSE);
if (c & RELKEY)
return (-1);
if (vw->vw_flags & VWF_SCROLL) {
vt_scrollmode_kbdevent(vw, c, 1/* Console mode */);
vt_flush(vd);
return (-1);
}
/* Stripped down handling of vt_kbdevent(), without locking, etc. */
if (c & SPCLKEY) {
switch (c) {
case SPCLKEY | SLK:
vt_save_kbd_state(vw, kbd);
if (vw->vw_kbdstate & SLKED) {
/* Turn scrolling on. */
vw->vw_flags |= VWF_SCROLL;
VTBUF_SLCK_ENABLE(&vw->vw_buf);
} else {
/* Turn scrolling off. */
vt_scroll(vw, 0, VHS_END);
vw->vw_flags &= ~VWF_SCROLL;
VTBUF_SLCK_DISABLE(&vw->vw_buf);
}
break;
/* XXX: KDB can handle history. */
case SPCLKEY | FKEY | F(50): /* Arrow up. */
vw->vw_kbdsq = "\x1b[A";
break;
case SPCLKEY | FKEY | F(58): /* Arrow down. */
vw->vw_kbdsq = "\x1b[B";
break;
case SPCLKEY | FKEY | F(55): /* Arrow right. */
vw->vw_kbdsq = "\x1b[C";
break;
case SPCLKEY | FKEY | F(53): /* Arrow left. */
vw->vw_kbdsq = "\x1b[D";
break;
}
/* Force refresh to make scrollback work. */
vt_flush(vd);
} else if (KEYFLAGS(c) == 0) {
return (KEYCHAR(c));
}
if (vw->vw_kbdsq && *vw->vw_kbdsq)
return (*vw->vw_kbdsq++);
return (-1);
}
/*
* These two do most of what we want to do in vtterm_cnungrab, but without
* actually switching windows. This is necessary for, e.g.,
* vt_allocate_keyboard() to get the current keyboard into the state it needs to
* be in without damaging the device's window state.
*
* Both return the current grab count, though it's only used in vtterm_cnungrab.
*/
static int
vtterm_cngrab_noswitch(struct vt_device *vd, struct vt_window *vw)
{
keyboard_t *kbd;
if (vw->vw_grabbed++ > 0)
return (vw->vw_grabbed);
if ((kbd = vd->vd_keyboard) == NULL)
return (1);
/*
* Make sure the keyboard is accessible even when the kbd device
* driver is disabled.
*/
kbdd_enable(kbd);
/* We shall always use the keyboard in the XLATE mode here. */
vw->vw_prev_kbdmode = vw->vw_kbdmode;
vw->vw_kbdmode = K_XLATE;
vt_update_kbd_mode(vw, kbd);
kbdd_poll(kbd, TRUE);
return (1);
}
static int
vtterm_cnungrab_noswitch(struct vt_device *vd, struct vt_window *vw)
{
keyboard_t *kbd;
if (--vw->vw_grabbed > 0)
return (vw->vw_grabbed);
if ((kbd = vd->vd_keyboard) == NULL)
return (0);
kbdd_poll(kbd, FALSE);
vw->vw_kbdmode = vw->vw_prev_kbdmode;
vt_update_kbd_mode(vw, kbd);
kbdd_disable(kbd);
return (0);
}
static void
vtterm_cngrab(struct terminal *tm)
{
struct vt_device *vd;
struct vt_window *vw;
vw = tm->tm_softc;
vd = vw->vw_device;
/* To be restored after we ungrab. */
if (vd->vd_grabwindow == NULL)
vd->vd_grabwindow = vd->vd_curwindow;
if (!cold)
vt_window_switch(vw);
vtterm_cngrab_noswitch(vd, vw);
}
static void
vtterm_cnungrab(struct terminal *tm)
{
struct vt_device *vd;
struct vt_window *vw;
vw = tm->tm_softc;
vd = vw->vw_device;
MPASS(vd->vd_grabwindow != NULL);
if (vtterm_cnungrab_noswitch(vd, vw) != 0)
return;
if (!cold && vd->vd_grabwindow != vw)
vt_window_switch(vd->vd_grabwindow);
vd->vd_grabwindow = NULL;
}
static void
vtterm_opened(struct terminal *tm, int opened)
{
struct vt_window *vw = tm->tm_softc;
struct vt_device *vd = vw->vw_device;
VT_LOCK(vd);
vd->vd_flags &= ~VDF_SPLASH;
if (opened)
vw->vw_flags |= VWF_OPENED;
else {
vw->vw_flags &= ~VWF_OPENED;
/* TODO: finish ACQ/REL */
}
VT_UNLOCK(vd);
}
static int
vt_change_font(struct vt_window *vw, struct vt_font *vf)
{
struct vt_device *vd = vw->vw_device;
struct terminal *tm = vw->vw_terminal;
term_pos_t size;
struct winsize wsz;
/*
* Changing fonts.
*
* Changing fonts is a little tricky. We must prevent
* simultaneous access to the device, so we must stop
* the display timer and the terminal from accessing.
* We need to switch fonts and grow our screen buffer.
*
* XXX: Right now the code uses terminal_mute() to
* prevent data from reaching the console driver while
* resizing the screen buffer. This isn't elegant...
*/
VT_LOCK(vd);
if (vw->vw_flags & VWF_BUSY) {
/* Another process is changing the font. */
VT_UNLOCK(vd);
return (EBUSY);
}
vw->vw_flags |= VWF_BUSY;
VT_UNLOCK(vd);
vt_termsize(vd, vf, &size);
vt_winsize(vd, vf, &wsz);
/* Grow the screen buffer and terminal. */
terminal_mute(tm, 1);
vtbuf_grow(&vw->vw_buf, &size, vw->vw_buf.vb_history_size);
terminal_set_winsize_blank(tm, &wsz, 0, NULL);
terminal_set_cursor(tm, &vw->vw_buf.vb_cursor);
terminal_mute(tm, 0);
/* Actually apply the font to the current window. */
VT_LOCK(vd);
if (vw->vw_font != vf && vw->vw_font != NULL && vf != NULL) {
/*
* In case vt_change_font called to update size we don't need
* to update font link.
*/
vtfont_unref(vw->vw_font);
vw->vw_font = vtfont_ref(vf);
}
/*
* Compute the drawable area and move the mouse cursor inside
* it, in case the new area is smaller than the previous one.
*/
vt_compute_drawable_area(vw);
vd->vd_mx = min(vd->vd_mx,
vw->vw_draw_area.tr_end.tp_col -
vw->vw_draw_area.tr_begin.tp_col - 1);
vd->vd_my = min(vd->vd_my,
vw->vw_draw_area.tr_end.tp_row -
vw->vw_draw_area.tr_begin.tp_row - 1);
/* Force a full redraw the next timer tick. */
if (vd->vd_curwindow == vw) {
vd->vd_flags |= VDF_INVALID;
vt_resume_flush_timer(vw, 0);
}
vw->vw_flags &= ~VWF_BUSY;
VT_UNLOCK(vd);
return (0);
}
static int
vt_proc_alive(struct vt_window *vw)
{
struct proc *p;
if (vw->vw_smode.mode != VT_PROCESS)
return (FALSE);
if (vw->vw_proc) {
if ((p = pfind(vw->vw_pid)) != NULL)
PROC_UNLOCK(p);
if (vw->vw_proc == p)
return (TRUE);
vw->vw_proc = NULL;
vw->vw_smode.mode = VT_AUTO;
DPRINTF(1, "vt controlling process %d died\n", vw->vw_pid);
vw->vw_pid = 0;
}
return (FALSE);
}
static int
signal_vt_rel(struct vt_window *vw)
{
if (vw->vw_smode.mode != VT_PROCESS)
return (FALSE);
if (vw->vw_proc == NULL || vt_proc_alive(vw) == FALSE) {
vw->vw_proc = NULL;
vw->vw_pid = 0;
return (TRUE);
}
vw->vw_flags |= VWF_SWWAIT_REL;
PROC_LOCK(vw->vw_proc);
kern_psignal(vw->vw_proc, vw->vw_smode.relsig);
PROC_UNLOCK(vw->vw_proc);
DPRINTF(1, "sending relsig to %d\n", vw->vw_pid);
return (TRUE);
}
static int
signal_vt_acq(struct vt_window *vw)
{
if (vw->vw_smode.mode != VT_PROCESS)
return (FALSE);
if (vw == vw->vw_device->vd_windows[VT_CONSWINDOW])
cnavailable(vw->vw_terminal->consdev, FALSE);
if (vw->vw_proc == NULL || vt_proc_alive(vw) == FALSE) {
vw->vw_proc = NULL;
vw->vw_pid = 0;
return (TRUE);
}
vw->vw_flags |= VWF_SWWAIT_ACQ;
PROC_LOCK(vw->vw_proc);
kern_psignal(vw->vw_proc, vw->vw_smode.acqsig);
PROC_UNLOCK(vw->vw_proc);
DPRINTF(1, "sending acqsig to %d\n", vw->vw_pid);
return (TRUE);
}
static int
finish_vt_rel(struct vt_window *vw, int release, int *s)
{
if (vw->vw_flags & VWF_SWWAIT_REL) {
vw->vw_flags &= ~VWF_SWWAIT_REL;
if (release) {
callout_drain(&vw->vw_proc_dead_timer);
(void)vt_late_window_switch(vw->vw_switch_to);
}
return (0);
}
return (EINVAL);
}
static int
finish_vt_acq(struct vt_window *vw)
{
if (vw->vw_flags & VWF_SWWAIT_ACQ) {
vw->vw_flags &= ~VWF_SWWAIT_ACQ;
return (0);
}
return (EINVAL);
}
#ifndef SC_NO_CUTPASTE
static void
vt_mouse_terminput_button(struct vt_device *vd, int button)
{
struct vt_window *vw;
struct vt_font *vf;
char mouseb[6] = "\x1B[M";
int i, x, y;
vw = vd->vd_curwindow;
vf = vw->vw_font;
/* Translate to char position. */
x = vd->vd_mx / vf->vf_width;
y = vd->vd_my / vf->vf_height;
/* Avoid overflow. */
x = MIN(x, 255 - '!');
y = MIN(y, 255 - '!');
mouseb[3] = ' ' + button;
mouseb[4] = '!' + x;
mouseb[5] = '!' + y;
for (i = 0; i < sizeof(mouseb); i++)
terminal_input_char(vw->vw_terminal, mouseb[i]);
}
static void
vt_mouse_terminput(struct vt_device *vd, int type, int x, int y, int event,
int cnt)
{
switch (type) {
case MOUSE_BUTTON_EVENT:
if (cnt > 0) {
/* Mouse button pressed. */
if (event & MOUSE_BUTTON1DOWN)
vt_mouse_terminput_button(vd, 0);
if (event & MOUSE_BUTTON2DOWN)
vt_mouse_terminput_button(vd, 1);
if (event & MOUSE_BUTTON3DOWN)
vt_mouse_terminput_button(vd, 2);
} else {
/* Mouse button released. */
vt_mouse_terminput_button(vd, 3);
}
break;
#ifdef notyet
case MOUSE_MOTION_EVENT:
if (mouse->u.data.z < 0) {
/* Scroll up. */
sc_mouse_input_button(vd, 64);
} else if (mouse->u.data.z > 0) {
/* Scroll down. */
sc_mouse_input_button(vd, 65);
}
break;
#endif
}
}
static void
vt_mouse_paste()
{
term_char_t *buf;
int i, len;
len = VD_PASTEBUFLEN(main_vd);
buf = VD_PASTEBUF(main_vd);
len /= sizeof(term_char_t);
for (i = 0; i < len; i++) {
if (buf[i] == '\0')
continue;
terminal_input_char(main_vd->vd_curwindow->vw_terminal,
buf[i]);
}
}
void
vt_mouse_event(int type, int x, int y, int event, int cnt, int mlevel)
{
struct vt_device *vd;
struct vt_window *vw;
struct vt_font *vf;
term_pos_t size;
int len, mark;
vd = main_vd;
vw = vd->vd_curwindow;
vf = vw->vw_font;
mark = 0;
if (vw->vw_flags & (VWF_MOUSE_HIDE | VWF_GRAPHICS))
/*
* Either the mouse is disabled, or the window is in
* "graphics mode". The graphics mode is usually set by
* an X server, using the KDSETMODE ioctl.
*/
return;
if (vf == NULL) /* Text mode. */
return;
/*
* TODO: add flag about pointer position changed, to not redraw chars
* under mouse pointer when nothing changed.
*/
if (vw->vw_mouse_level > 0)
vt_mouse_terminput(vd, type, x, y, event, cnt);
switch (type) {
case MOUSE_ACTION:
case MOUSE_MOTION_EVENT:
/* Movement */
x += vd->vd_mx;
y += vd->vd_my;
vt_termsize(vd, vf, &size);
/* Apply limits. */
x = MAX(x, 0);
y = MAX(y, 0);
x = MIN(x, (size.tp_col * vf->vf_width) - 1);
y = MIN(y, (size.tp_row * vf->vf_height) - 1);
vd->vd_mx = x;
vd->vd_my = y;
if (vd->vd_mstate & MOUSE_BUTTON1DOWN)
vtbuf_set_mark(&vw->vw_buf, VTB_MARK_MOVE,
vd->vd_mx / vf->vf_width,
vd->vd_my / vf->vf_height);
vt_resume_flush_timer(vw, 0);
return; /* Done */
case MOUSE_BUTTON_EVENT:
/* Buttons */
break;
default:
return; /* Done */
}
switch (event) {
case MOUSE_BUTTON1DOWN:
switch (cnt % 4) {
case 0: /* up */
mark = VTB_MARK_END;
break;
case 1: /* single click: start cut operation */
mark = VTB_MARK_START;
break;
case 2: /* double click: cut a word */
mark = VTB_MARK_WORD;
break;
case 3: /* triple click: cut a line */
mark = VTB_MARK_ROW;
break;
}
break;
case VT_MOUSE_PASTEBUTTON:
switch (cnt) {
case 0: /* up */
break;
default:
vt_mouse_paste();
break;
}
return; /* Done */
case VT_MOUSE_EXTENDBUTTON:
switch (cnt) {
case 0: /* up */
if (!(vd->vd_mstate & MOUSE_BUTTON1DOWN))
mark = VTB_MARK_EXTEND;
else
mark = 0;
break;
default:
mark = VTB_MARK_EXTEND;
break;
}
break;
default:
return; /* Done */
}
/* Save buttons state. */
if (cnt > 0)
vd->vd_mstate |= event;
else
vd->vd_mstate &= ~event;
if (vtbuf_set_mark(&vw->vw_buf, mark, vd->vd_mx / vf->vf_width,
vd->vd_my / vf->vf_height) == 1) {
/*
* We have something marked to copy, so update pointer to
* window with selection.
*/
vt_resume_flush_timer(vw, 0);
switch (mark) {
case VTB_MARK_END:
case VTB_MARK_WORD:
case VTB_MARK_ROW:
case VTB_MARK_EXTEND:
break;
default:
/* Other types of mark do not require to copy data. */
return;
}
/* Get current selection size in bytes. */
len = vtbuf_get_marked_len(&vw->vw_buf);
if (len <= 0)
return;
/* Reallocate buffer only if old one is too small. */
if (len > VD_PASTEBUFSZ(vd)) {
VD_PASTEBUF(vd) = realloc(VD_PASTEBUF(vd), len, M_VT,
M_WAITOK | M_ZERO);
/* Update buffer size. */
VD_PASTEBUFSZ(vd) = len;
}
/* Request copy/paste buffer data, no more than `len' */
vtbuf_extract_marked(&vw->vw_buf, VD_PASTEBUF(vd),
VD_PASTEBUFSZ(vd));
VD_PASTEBUFLEN(vd) = len;
/* XXX VD_PASTEBUF(vd) have to be freed on shutdown/unload. */
}
}
void
vt_mouse_state(int show)
{
struct vt_device *vd;
struct vt_window *vw;
vd = main_vd;
vw = vd->vd_curwindow;
switch (show) {
case VT_MOUSE_HIDE:
vw->vw_flags |= VWF_MOUSE_HIDE;
break;
case VT_MOUSE_SHOW:
vw->vw_flags &= ~VWF_MOUSE_HIDE;
break;
}
/* Mark mouse position as dirty. */
vt_mark_mouse_position_as_dirty(vd, false);
vt_resume_flush_timer(vw, 0);
}
#endif
static int
vtterm_mmap(struct terminal *tm, vm_ooffset_t offset, vm_paddr_t * paddr,
int nprot, vm_memattr_t *memattr)
{
struct vt_window *vw = tm->tm_softc;
struct vt_device *vd = vw->vw_device;
if (vd->vd_driver->vd_fb_mmap)
return (vd->vd_driver->vd_fb_mmap(vd, offset, paddr, nprot,
memattr));
return (ENXIO);
}
static int
vtterm_ioctl(struct terminal *tm, u_long cmd, caddr_t data,
struct thread *td)
{
struct vt_window *vw = tm->tm_softc;
struct vt_device *vd = vw->vw_device;
keyboard_t *kbd;
int error, i, s;
#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
int ival;
switch (cmd) {
case _IO('v', 4):
cmd = VT_RELDISP;
break;
case _IO('v', 5):
cmd = VT_ACTIVATE;
break;
case _IO('v', 6):
cmd = VT_WAITACTIVE;
break;
case _IO('K', 20):
cmd = KDSKBSTATE;
break;
case _IO('K', 67):
cmd = KDSETRAD;
break;
case _IO('K', 7):
cmd = KDSKBMODE;
break;
case _IO('K', 8):
cmd = KDMKTONE;
break;
case _IO('K', 10):
cmd = KDSETMODE;
break;
case _IO('K', 13):
cmd = KDSBORDER;
break;
case _IO('K', 63):
cmd = KIOCSOUND;
break;
case _IO('K', 66):
cmd = KDSETLED;
break;
case _IO('c', 104):
cmd = CONS_SETWINORG;
break;
case _IO('c', 110):
cmd = CONS_SETKBD;
break;
default:
goto skip_thunk;
}
ival = IOCPARM_IVAL(data);
data = (caddr_t)&ival;
skip_thunk:
#endif
switch (cmd) {
case KDSETRAD: /* set keyboard repeat & delay rates (old) */
if (*(int *)data & ~0x7f)
return (EINVAL);
/* FALLTHROUGH */
case GIO_KEYMAP:
case PIO_KEYMAP:
case GIO_DEADKEYMAP:
case PIO_DEADKEYMAP:
case GETFKEY:
case SETFKEY:
case KDGKBINFO:
case KDGKBTYPE:
case KDGETREPEAT: /* get keyboard repeat & delay rates */
case KDSETREPEAT: /* set keyboard repeat & delay rates (new) */
case KBADDKBD: /* add/remove keyboard to/from mux */
case KBRELKBD: {
error = 0;
mtx_lock(&Giant);
if ((kbd = vd->vd_keyboard) != NULL)
error = kbdd_ioctl(kbd, cmd, data);
mtx_unlock(&Giant);
if (error == ENOIOCTL) {
if (cmd == KDGKBTYPE) {
/* always return something? XXX */
*(int *)data = 0;
} else {
return (ENODEV);
}
}
return (error);
}
case KDGKBSTATE: { /* get keyboard state (locks) */
error = 0;
if (vw == vd->vd_curwindow) {
mtx_lock(&Giant);
if ((kbd = vd->vd_keyboard) != NULL)
error = vt_save_kbd_state(vw, kbd);
mtx_unlock(&Giant);
if (error != 0)
return (error);
}
*(int *)data = vw->vw_kbdstate & LOCK_MASK;
return (error);
}
case KDSKBSTATE: { /* set keyboard state (locks) */
int state;
state = *(int *)data;
if (state & ~LOCK_MASK)
return (EINVAL);
vw->vw_kbdstate &= ~LOCK_MASK;
vw->vw_kbdstate |= state;
error = 0;
if (vw == vd->vd_curwindow) {
mtx_lock(&Giant);
if ((kbd = vd->vd_keyboard) != NULL)
error = vt_update_kbd_state(vw, kbd);
mtx_unlock(&Giant);
}
return (error);
}
case KDGETLED: { /* get keyboard LED status */
error = 0;
if (vw == vd->vd_curwindow) {
mtx_lock(&Giant);
if ((kbd = vd->vd_keyboard) != NULL)
error = vt_save_kbd_leds(vw, kbd);
mtx_unlock(&Giant);
if (error != 0)
return (error);
}
*(int *)data = vw->vw_kbdstate & LED_MASK;
return (error);
}
case KDSETLED: { /* set keyboard LED status */
int leds;
leds = *(int *)data;
if (leds & ~LED_MASK)
return (EINVAL);
vw->vw_kbdstate &= ~LED_MASK;
vw->vw_kbdstate |= leds;
error = 0;
if (vw == vd->vd_curwindow) {
mtx_lock(&Giant);
if ((kbd = vd->vd_keyboard) != NULL)
error = vt_update_kbd_leds(vw, kbd);
mtx_unlock(&Giant);
}
return (error);
}
case KDGETMODE:
*(int *)data = (vw->vw_flags & VWF_GRAPHICS) ?
KD_GRAPHICS : KD_TEXT;
return (0);
case KDGKBMODE: {
error = 0;
if (vw == vd->vd_curwindow) {
mtx_lock(&Giant);
if ((kbd = vd->vd_keyboard) != NULL)
error = vt_save_kbd_mode(vw, kbd);
mtx_unlock(&Giant);
if (error != 0)
return (error);
}
*(int *)data = vw->vw_kbdmode;
return (error);
}
case KDSKBMODE: {
int mode;
mode = *(int *)data;
switch (mode) {
case K_XLATE:
case K_RAW:
case K_CODE:
vw->vw_kbdmode = mode;
error = 0;
if (vw == vd->vd_curwindow) {
mtx_lock(&Giant);
if ((kbd = vd->vd_keyboard) != NULL)
error = vt_update_kbd_mode(vw, kbd);
mtx_unlock(&Giant);
}
return (error);
default:
return (EINVAL);
}
}
case FBIOGTYPE:
case FBIO_GETWINORG: /* get frame buffer window origin */
case FBIO_GETDISPSTART: /* get display start address */
case FBIO_GETLINEWIDTH: /* get scan line width in bytes */
case FBIO_BLANK: /* blank display */
if (vd->vd_driver->vd_fb_ioctl)
return (vd->vd_driver->vd_fb_ioctl(vd, cmd, data, td));
break;
case CONS_BLANKTIME:
/* XXX */
return (0);
case CONS_HISTORY:
if (*(int *)data < 0)
return EINVAL;
if (*(int *)data != vw->vw_buf.vb_history_size)
vtbuf_sethistory_size(&vw->vw_buf, *(int *)data);
return (0);
case CONS_CLRHIST:
vtbuf_clearhistory(&vw->vw_buf);
/*
* Invalidate the entire visible window; it is not guaranteed
* that this operation will be immediately followed by a scroll
* event, so it would otherwise be possible for prior artifacts
* to remain visible.
*/
VT_LOCK(vd);
if (vw == vd->vd_curwindow) {
vd->vd_flags |= VDF_INVALID;
vt_resume_flush_timer(vw, 0);
}
VT_UNLOCK(vd);
return (0);
case CONS_GET:
/* XXX */
*(int *)data = M_CG640x480;
return (0);
case CONS_BELLTYPE: /* set bell type sound */
if ((*(int *)data) & CONS_QUIET_BELL)
vd->vd_flags |= VDF_QUIET_BELL;
else
vd->vd_flags &= ~VDF_QUIET_BELL;
return (0);
case CONS_GETINFO: {
vid_info_t *vi = (vid_info_t *)data;
if (vi->size != sizeof(struct vid_info))
return (EINVAL);
if (vw == vd->vd_curwindow) {
mtx_lock(&Giant);
if ((kbd = vd->vd_keyboard) != NULL)
vt_save_kbd_state(vw, kbd);
mtx_unlock(&Giant);
}
vi->m_num = vd->vd_curwindow->vw_number + 1;
vi->mk_keylock = vw->vw_kbdstate & LOCK_MASK;
/* XXX: other fields! */
return (0);
}
case CONS_GETVERS:
*(int *)data = 0x200;
return (0);
case CONS_MODEINFO:
/* XXX */
return (0);
case CONS_MOUSECTL: {
mouse_info_t *mouse = (mouse_info_t*)data;
/*
* All the commands except MOUSE_SHOW nd MOUSE_HIDE
* should not be applied to individual TTYs, but only to
* consolectl.
*/
switch (mouse->operation) {
case MOUSE_HIDE:
if (vd->vd_flags & VDF_MOUSECURSOR) {
vd->vd_flags &= ~VDF_MOUSECURSOR;
#ifndef SC_NO_CUTPASTE
vt_mouse_state(VT_MOUSE_HIDE);
#endif
}
return (0);
case MOUSE_SHOW:
if (!(vd->vd_flags & VDF_MOUSECURSOR)) {
vd->vd_flags |= VDF_MOUSECURSOR;
vd->vd_mx = vd->vd_width / 2;
vd->vd_my = vd->vd_height / 2;
#ifndef SC_NO_CUTPASTE
vt_mouse_state(VT_MOUSE_SHOW);
#endif
}
return (0);
default:
return (EINVAL);
}
}
case PIO_VFONT: {
struct vt_font *vf;
if (vd->vd_flags & VDF_TEXTMODE)
return (ENOTSUP);
error = vtfont_load((void *)data, &vf);
if (error != 0)
return (error);
error = vt_change_font(vw, vf);
vtfont_unref(vf);
return (error);
}
case PIO_VFONT_DEFAULT: {
/* Reset to default font. */
error = vt_change_font(vw, vt_font_assigned);
return (error);
}
case GIO_SCRNMAP: {
scrmap_t *sm = (scrmap_t *)data;
/* We don't have screen maps, so return a handcrafted one. */
for (i = 0; i < 256; i++)
sm->scrmap[i] = i;
return (0);
}
case KDSETMODE:
/*
* FIXME: This implementation is incomplete compared to
* syscons.
*/
switch (*(int *)data) {
case KD_TEXT:
case KD_TEXT1:
case KD_PIXEL:
vw->vw_flags &= ~VWF_GRAPHICS;
break;
case KD_GRAPHICS:
vw->vw_flags |= VWF_GRAPHICS;
break;
}
return (0);
case KDENABIO: /* allow io operations */
error = priv_check(td, PRIV_IO);
if (error != 0)
return (error);
error = securelevel_gt(td->td_ucred, 0);
if (error != 0)
return (error);
#if defined(__i386__)
td->td_frame->tf_eflags |= PSL_IOPL;
#elif defined(__amd64__)
td->td_frame->tf_rflags |= PSL_IOPL;
#endif
return (0);
case KDDISABIO: /* disallow io operations (default) */
#if defined(__i386__)
td->td_frame->tf_eflags &= ~PSL_IOPL;
#elif defined(__amd64__)
td->td_frame->tf_rflags &= ~PSL_IOPL;
#endif
return (0);
case KDMKTONE: /* sound the bell */
vtterm_beep(tm, *(u_int *)data);
return (0);
case KIOCSOUND: /* make tone (*data) hz */
/* TODO */
return (0);
case CONS_SETKBD: /* set the new keyboard */
mtx_lock(&Giant);
error = 0;
if (vd->vd_keyboard == NULL ||
vd->vd_keyboard->kb_index != *(int *)data) {
kbd = kbd_get_keyboard(*(int *)data);
if (kbd == NULL) {
mtx_unlock(&Giant);
return (EINVAL);
}
i = kbd_allocate(kbd->kb_name, kbd->kb_unit,
(void *)vd, vt_kbdevent, vd);
if (i >= 0) {
if ((kbd = vd->vd_keyboard) != NULL) {
vt_save_kbd_state(vd->vd_curwindow, kbd);
kbd_release(kbd, (void *)vd);
}
kbd = vd->vd_keyboard = kbd_get_keyboard(i);
vt_update_kbd_mode(vd->vd_curwindow, kbd);
vt_update_kbd_state(vd->vd_curwindow, kbd);
} else {
error = EPERM; /* XXX */
}
}
mtx_unlock(&Giant);
return (error);
case CONS_RELKBD: /* release the current keyboard */
mtx_lock(&Giant);
error = 0;
if ((kbd = vd->vd_keyboard) != NULL) {
vt_save_kbd_state(vd->vd_curwindow, kbd);
error = kbd_release(kbd, (void *)vd);
if (error == 0) {
vd->vd_keyboard = NULL;
}
}
mtx_unlock(&Giant);
return (error);
case VT_ACTIVATE: {
int win;
win = *(int *)data - 1;
DPRINTF(5, "%s%d: VT_ACTIVATE ttyv%d ", SC_DRIVER_NAME,
VT_UNIT(vw), win);
if ((win >= VT_MAXWINDOWS) || (win < 0))
return (EINVAL);
return (vt_proc_window_switch(vd->vd_windows[win]));
}
case VT_GETACTIVE:
*(int *)data = vd->vd_curwindow->vw_number + 1;
return (0);
case VT_GETINDEX:
*(int *)data = vw->vw_number + 1;
return (0);
case VT_LOCKSWITCH:
/* TODO: Check current state, switching can be in progress. */
if ((*(int *)data) == 0x01)
vw->vw_flags |= VWF_VTYLOCK;
else if ((*(int *)data) == 0x02)
vw->vw_flags &= ~VWF_VTYLOCK;
else
return (EINVAL);
return (0);
case VT_OPENQRY:
VT_LOCK(vd);
for (i = 0; i < VT_MAXWINDOWS; i++) {
vw = vd->vd_windows[i];
if (vw == NULL)
continue;
if (!(vw->vw_flags & VWF_OPENED)) {
*(int *)data = vw->vw_number + 1;
VT_UNLOCK(vd);
return (0);
}
}
VT_UNLOCK(vd);
return (EINVAL);
case VT_WAITACTIVE: {
unsigned int idx;
error = 0;
idx = *(unsigned int *)data;
if (idx > VT_MAXWINDOWS)
return (EINVAL);
if (idx > 0)
vw = vd->vd_windows[idx - 1];
VT_LOCK(vd);
while (vd->vd_curwindow != vw && error == 0)
error = cv_wait_sig(&vd->vd_winswitch, &vd->vd_lock);
VT_UNLOCK(vd);
return (error);
}
case VT_SETMODE: { /* set screen switcher mode */
struct vt_mode *mode;
struct proc *p1;
mode = (struct vt_mode *)data;
DPRINTF(5, "%s%d: VT_SETMODE ", SC_DRIVER_NAME, VT_UNIT(vw));
if (vw->vw_smode.mode == VT_PROCESS) {
p1 = pfind(vw->vw_pid);
if (vw->vw_proc == p1 && vw->vw_proc != td->td_proc) {
if (p1)
PROC_UNLOCK(p1);
DPRINTF(5, "error EPERM\n");
return (EPERM);
}
if (p1)
PROC_UNLOCK(p1);
}
if (mode->mode == VT_AUTO) {
vw->vw_smode.mode = VT_AUTO;
vw->vw_proc = NULL;
vw->vw_pid = 0;
DPRINTF(5, "VT_AUTO, ");
if (vw == vw->vw_device->vd_windows[VT_CONSWINDOW])
cnavailable(vw->vw_terminal->consdev, TRUE);
/* were we in the middle of the vty switching process? */
if (finish_vt_rel(vw, TRUE, &s) == 0)
DPRINTF(5, "reset WAIT_REL, ");
if (finish_vt_acq(vw) == 0)
DPRINTF(5, "reset WAIT_ACQ, ");
return (0);
} else if (mode->mode == VT_PROCESS) {
if (!ISSIGVALID(mode->relsig) ||
!ISSIGVALID(mode->acqsig) ||
!ISSIGVALID(mode->frsig)) {
DPRINTF(5, "error EINVAL\n");
return (EINVAL);
}
DPRINTF(5, "VT_PROCESS %d, ", td->td_proc->p_pid);
bcopy(data, &vw->vw_smode, sizeof(struct vt_mode));
vw->vw_proc = td->td_proc;
vw->vw_pid = vw->vw_proc->p_pid;
if (vw == vw->vw_device->vd_windows[VT_CONSWINDOW])
cnavailable(vw->vw_terminal->consdev, FALSE);
} else {
DPRINTF(5, "VT_SETMODE failed, unknown mode %d\n",
mode->mode);
return (EINVAL);
}
DPRINTF(5, "\n");
return (0);
}
case VT_GETMODE: /* get screen switcher mode */
bcopy(&vw->vw_smode, data, sizeof(struct vt_mode));
return (0);
case VT_RELDISP: /* screen switcher ioctl */
/*
* This must be the current vty which is in the VT_PROCESS
* switching mode...
*/
if ((vw != vd->vd_curwindow) || (vw->vw_smode.mode !=
VT_PROCESS)) {
return (EINVAL);
}
/* ...and this process is controlling it. */
if (vw->vw_proc != td->td_proc) {
return (EPERM);
}
error = EINVAL;
switch(*(int *)data) {
case VT_FALSE: /* user refuses to release screen, abort */
if ((error = finish_vt_rel(vw, FALSE, &s)) == 0)
DPRINTF(5, "%s%d: VT_RELDISP: VT_FALSE\n",
SC_DRIVER_NAME, VT_UNIT(vw));
break;
case VT_TRUE: /* user has released screen, go on */
/* finish_vt_rel(..., TRUE, ...) should not be locked */
if (vw->vw_flags & VWF_SWWAIT_REL) {
if ((error = finish_vt_rel(vw, TRUE, &s)) == 0)
DPRINTF(5, "%s%d: VT_RELDISP: VT_TRUE\n",
SC_DRIVER_NAME, VT_UNIT(vw));
} else {
error = EINVAL;
}
return (error);
case VT_ACKACQ: /* acquire acknowledged, switch completed */
if ((error = finish_vt_acq(vw)) == 0)
DPRINTF(5, "%s%d: VT_RELDISP: VT_ACKACQ\n",
SC_DRIVER_NAME, VT_UNIT(vw));
break;
default:
break;
}
return (error);
}
return (ENOIOCTL);
}
static struct vt_window *
vt_allocate_window(struct vt_device *vd, unsigned int window)
{
struct vt_window *vw;
struct terminal *tm;
term_pos_t size;
struct winsize wsz;
vw = malloc(sizeof *vw, M_VT, M_WAITOK|M_ZERO);
vw->vw_device = vd;
vw->vw_number = window;
vw->vw_kbdmode = K_XLATE;
if ((vd->vd_flags & VDF_TEXTMODE) == 0) {
vw->vw_font = vtfont_ref(vt_font_assigned);
vt_compute_drawable_area(vw);
}
vt_termsize(vd, vw->vw_font, &size);
vt_winsize(vd, vw->vw_font, &wsz);
tm = vw->vw_terminal = terminal_alloc(&vt_termclass, vw);
vw->vw_buf.vb_terminal = tm; /* must be set before vtbuf_init() */
vtbuf_init(&vw->vw_buf, &size);
terminal_set_winsize(tm, &wsz);
vd->vd_windows[window] = vw;
callout_init(&vw->vw_proc_dead_timer, 1);
return (vw);
}
void
vt_upgrade(struct vt_device *vd)
{
struct vt_window *vw;
unsigned int i;
int register_handlers;
if (!vty_enabled(VTY_VT))
return;
if (main_vd->vd_driver == NULL)
return;
for (i = 0; i < VT_MAXWINDOWS; i++) {
vw = vd->vd_windows[i];
if (vw == NULL) {
/* New window. */
vw = vt_allocate_window(vd, i);
}
if (!(vw->vw_flags & VWF_READY)) {
callout_init(&vw->vw_proc_dead_timer, 1);
terminal_maketty(vw->vw_terminal, "v%r", VT_UNIT(vw));
vw->vw_flags |= VWF_READY;
if (vw->vw_flags & VWF_CONSOLE) {
/* For existing console window. */
EVENTHANDLER_REGISTER(shutdown_pre_sync,
vt_window_switch, vw, SHUTDOWN_PRI_DEFAULT);
}
}
}
VT_LOCK(vd);
if (vd->vd_curwindow == NULL)
vd->vd_curwindow = vd->vd_windows[VT_CONSWINDOW];
register_handlers = 0;
if (!(vd->vd_flags & VDF_ASYNC)) {
/* Attach keyboard. */
vt_allocate_keyboard(vd);
/* Init 25 Hz timer. */
callout_init_mtx(&vd->vd_timer, &vd->vd_lock, 0);
/*
* Start timer when everything ready.
* Note that the operations here are purposefully ordered.
* We need to ensure vd_timer_armed is non-zero before we set
* the VDF_ASYNC flag. That prevents this function from
* racing with vt_resume_flush_timer() to update the
* callout structure.
*/
atomic_add_acq_int(&vd->vd_timer_armed, 1);
vd->vd_flags |= VDF_ASYNC;
callout_reset(&vd->vd_timer, hz / VT_TIMERFREQ, vt_timer, vd);
register_handlers = 1;
}
VT_UNLOCK(vd);
/* Refill settings with new sizes. */
vt_resize(vd);
if (register_handlers) {
/* Register suspend/resume handlers. */
EVENTHANDLER_REGISTER(power_suspend_early, vt_suspend_handler,
vd, EVENTHANDLER_PRI_ANY);
EVENTHANDLER_REGISTER(power_resume, vt_resume_handler, vd,
EVENTHANDLER_PRI_ANY);
}
}
static void
vt_resize(struct vt_device *vd)
{
struct vt_window *vw;
int i;
for (i = 0; i < VT_MAXWINDOWS; i++) {
vw = vd->vd_windows[i];
VT_LOCK(vd);
/* Assign default font to window, if not textmode. */
if (!(vd->vd_flags & VDF_TEXTMODE) && vw->vw_font == NULL)
vw->vw_font = vtfont_ref(vt_font_assigned);
VT_UNLOCK(vd);
/* Resize terminal windows */
while (vt_change_font(vw, vw->vw_font) == EBUSY) {
DPRINTF(100, "%s: vt_change_font() is busy, "
"window %d\n", __func__, i);
}
}
}
static void
vt_replace_backend(const struct vt_driver *drv, void *softc)
{
struct vt_device *vd;
vd = main_vd;
if (vd->vd_flags & VDF_ASYNC) {
/* Stop vt_flush periodic task. */
VT_LOCK(vd);
vt_suspend_flush_timer(vd);
VT_UNLOCK(vd);
/*
* Mute current terminal until we done. vt_change_font (called
* from vt_resize) will unmute it.
*/
terminal_mute(vd->vd_curwindow->vw_terminal, 1);
}
/*
* Reset VDF_TEXTMODE flag, driver who require that flag (vt_vga) will
* set it.
*/
VT_LOCK(vd);
vd->vd_flags &= ~VDF_TEXTMODE;
if (drv != NULL) {
/*
* We want to upgrade from the current driver to the
* given driver.
*/
vd->vd_prev_driver = vd->vd_driver;
vd->vd_prev_softc = vd->vd_softc;
vd->vd_driver = drv;
vd->vd_softc = softc;
vd->vd_driver->vd_init(vd);
} else if (vd->vd_prev_driver != NULL && vd->vd_prev_softc != NULL) {
/*
* No driver given: we want to downgrade to the previous
* driver.
*/
const struct vt_driver *old_drv;
void *old_softc;
old_drv = vd->vd_driver;
old_softc = vd->vd_softc;
vd->vd_driver = vd->vd_prev_driver;
vd->vd_softc = vd->vd_prev_softc;
vd->vd_prev_driver = NULL;
vd->vd_prev_softc = NULL;
vd->vd_flags |= VDF_DOWNGRADE;
vd->vd_driver->vd_init(vd);
if (old_drv->vd_fini)
old_drv->vd_fini(vd, old_softc);
vd->vd_flags &= ~VDF_DOWNGRADE;
}
VT_UNLOCK(vd);
/* Update windows sizes and initialize last items. */
vt_upgrade(vd);
#ifdef DEV_SPLASH
if (vd->vd_flags & VDF_SPLASH)
vtterm_splash(vd);
#endif
if (vd->vd_flags & VDF_ASYNC) {
/* Allow to put chars now. */
terminal_mute(vd->vd_curwindow->vw_terminal, 0);
/* Rerun timer for screen updates. */
vt_resume_flush_timer(vd->vd_curwindow, 0);
}
/*
* Register as console. If it already registered, cnadd() will ignore
* it.
*/
termcn_cnregister(vd->vd_windows[VT_CONSWINDOW]->vw_terminal);
}
static void
vt_suspend_handler(void *priv)
{
struct vt_device *vd;
vd = priv;
vd->vd_flags |= VDF_SUSPENDED;
if (vd->vd_driver != NULL && vd->vd_driver->vd_suspend != NULL)
vd->vd_driver->vd_suspend(vd);
}
static void
vt_resume_handler(void *priv)
{
struct vt_device *vd;
vd = priv;
if (vd->vd_driver != NULL && vd->vd_driver->vd_resume != NULL)
vd->vd_driver->vd_resume(vd);
vd->vd_flags &= ~VDF_SUSPENDED;
}
void
vt_allocate(const struct vt_driver *drv, void *softc)
{
if (!vty_enabled(VTY_VT))
return;
if (main_vd->vd_driver == NULL) {
main_vd->vd_driver = drv;
printf("VT: initialize with new VT driver \"%s\".\n",
drv->vd_name);
} else {
/*
* Check if have rights to replace current driver. For example:
* it is bad idea to replace KMS driver with generic VGA one.
*/
if (drv->vd_priority <= main_vd->vd_driver->vd_priority) {
printf("VT: Driver priority %d too low. Current %d\n ",
drv->vd_priority, main_vd->vd_driver->vd_priority);
return;
}
printf("VT: Replacing driver \"%s\" with new \"%s\".\n",
main_vd->vd_driver->vd_name, drv->vd_name);
}
vt_replace_backend(drv, softc);
}
void
vt_deallocate(const struct vt_driver *drv, void *softc)
{
if (!vty_enabled(VTY_VT))
return;
if (main_vd->vd_prev_driver == NULL ||
main_vd->vd_driver != drv ||
main_vd->vd_softc != softc)
return;
printf("VT: Switching back from \"%s\" to \"%s\".\n",
main_vd->vd_driver->vd_name, main_vd->vd_prev_driver->vd_name);
vt_replace_backend(NULL, NULL);
}
void
vt_suspend(struct vt_device *vd)
{
int error;
if (vt_suspendswitch == 0)
return;
/* Save current window. */
vd->vd_savedwindow = vd->vd_curwindow;
/* Ask holding process to free window and switch to console window */
vt_proc_window_switch(vd->vd_windows[VT_CONSWINDOW]);
/* Wait for the window switch to complete. */
error = 0;
VT_LOCK(vd);
while (vd->vd_curwindow != vd->vd_windows[VT_CONSWINDOW] && error == 0)
error = cv_wait_sig(&vd->vd_winswitch, &vd->vd_lock);
VT_UNLOCK(vd);
}
void
vt_resume(struct vt_device *vd)
{
if (vt_suspendswitch == 0)
return;
/* Switch back to saved window, if any */
vt_proc_window_switch(vd->vd_savedwindow);
vd->vd_savedwindow = NULL;
}