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qemu/ui/console.c
Gerd Hoffmann 5b8541c6c7 console: fix cell overflow 
Linux terminal behavior (coming from vt100 I think) is somewhat strange
when it comes to line wraps:  When a character is printed to the last
char cell of a line the cursor does NOT jump to the next line but stays
where it is.  The line feed happens when the next character is printed.

So the valid range for the cursor position is not 0 .. width-1 but
0 .. width, where x == width represents the state where the line is
full but the cursor didn't jump to the next line yet.

The code for the 'clear from start of line' control sequence (ESC[1K)
fails to handle this corner case correctly and may call
console_clear_xy() with x == width.  That will incorrectly clear the
first char cell of the next line, or in case the cursor happens to be on
the last line overflow the cell buffer by one character (three bytes).

Add a check to the loop to fix that.

Didn't spot any other places with the same problem.  But it's easy to
miss that corner case, so also allocate one extra cell as precaution, so
in case we have simliar issues lurking elsewhere it at least wouldn't be
a buffer overflow.

v2: squashed in additional checks suggested by Christophe de Dinechin.

Reported-by: Alexander Oleinik <alxndr@bu.edu>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Christophe de Dinechin <dinechin@redhat.com>
Message-id: 20190701075301.14165-1-kraxel@redhat.com
2019-07-03 10:57:12 +02:00

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/*
* QEMU graphical console
*
* Copyright (c) 2004 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "ui/console.h"
#include "hw/qdev-core.h"
#include "qapi/error.h"
#include "qapi/qapi-commands-ui.h"
#include "qemu/module.h"
#include "qemu/option.h"
#include "qemu/timer.h"
#include "chardev/char-fe.h"
#include "trace.h"
#include "exec/memory.h"
#define DEFAULT_BACKSCROLL 512
#define CONSOLE_CURSOR_PERIOD 500
typedef struct TextAttributes {
uint8_t fgcol:4;
uint8_t bgcol:4;
uint8_t bold:1;
uint8_t uline:1;
uint8_t blink:1;
uint8_t invers:1;
uint8_t unvisible:1;
} TextAttributes;
typedef struct TextCell {
uint8_t ch;
TextAttributes t_attrib;
} TextCell;
#define MAX_ESC_PARAMS 3
enum TTYState {
TTY_STATE_NORM,
TTY_STATE_ESC,
TTY_STATE_CSI,
};
typedef struct QEMUFIFO {
uint8_t *buf;
int buf_size;
int count, wptr, rptr;
} QEMUFIFO;
static int qemu_fifo_write(QEMUFIFO *f, const uint8_t *buf, int len1)
{
int l, len;
l = f->buf_size - f->count;
if (len1 > l)
len1 = l;
len = len1;
while (len > 0) {
l = f->buf_size - f->wptr;
if (l > len)
l = len;
memcpy(f->buf + f->wptr, buf, l);
f->wptr += l;
if (f->wptr >= f->buf_size)
f->wptr = 0;
buf += l;
len -= l;
}
f->count += len1;
return len1;
}
static int qemu_fifo_read(QEMUFIFO *f, uint8_t *buf, int len1)
{
int l, len;
if (len1 > f->count)
len1 = f->count;
len = len1;
while (len > 0) {
l = f->buf_size - f->rptr;
if (l > len)
l = len;
memcpy(buf, f->buf + f->rptr, l);
f->rptr += l;
if (f->rptr >= f->buf_size)
f->rptr = 0;
buf += l;
len -= l;
}
f->count -= len1;
return len1;
}
typedef enum {
GRAPHIC_CONSOLE,
TEXT_CONSOLE,
TEXT_CONSOLE_FIXED_SIZE
} console_type_t;
struct QemuConsole {
Object parent;
int index;
console_type_t console_type;
DisplayState *ds;
DisplaySurface *surface;
int dcls;
DisplayChangeListener *gl;
bool gl_block;
int window_id;
/* Graphic console state. */
Object *device;
uint32_t head;
QemuUIInfo ui_info;
QEMUTimer *ui_timer;
const GraphicHwOps *hw_ops;
void *hw;
/* Text console state */
int width;
int height;
int total_height;
int backscroll_height;
int x, y;
int x_saved, y_saved;
int y_displayed;
int y_base;
TextAttributes t_attrib_default; /* default text attributes */
TextAttributes t_attrib; /* currently active text attributes */
TextCell *cells;
int text_x[2], text_y[2], cursor_invalidate;
int echo;
int update_x0;
int update_y0;
int update_x1;
int update_y1;
enum TTYState state;
int esc_params[MAX_ESC_PARAMS];
int nb_esc_params;
Chardev *chr;
/* fifo for key pressed */
QEMUFIFO out_fifo;
uint8_t out_fifo_buf[16];
QEMUTimer *kbd_timer;
QTAILQ_ENTRY(QemuConsole) next;
};
struct DisplayState {
QEMUTimer *gui_timer;
uint64_t last_update;
uint64_t update_interval;
bool refreshing;
bool have_gfx;
bool have_text;
QLIST_HEAD(, DisplayChangeListener) listeners;
};
static DisplayState *display_state;
static QemuConsole *active_console;
static QTAILQ_HEAD(, QemuConsole) consoles =
QTAILQ_HEAD_INITIALIZER(consoles);
static bool cursor_visible_phase;
static QEMUTimer *cursor_timer;
static void text_console_do_init(Chardev *chr, DisplayState *ds);
static void dpy_refresh(DisplayState *s);
static DisplayState *get_alloc_displaystate(void);
static void text_console_update_cursor_timer(void);
static void text_console_update_cursor(void *opaque);
static void gui_update(void *opaque)
{
uint64_t interval = GUI_REFRESH_INTERVAL_IDLE;
uint64_t dcl_interval;
DisplayState *ds = opaque;
DisplayChangeListener *dcl;
QemuConsole *con;
ds->refreshing = true;
dpy_refresh(ds);
ds->refreshing = false;
QLIST_FOREACH(dcl, &ds->listeners, next) {
dcl_interval = dcl->update_interval ?
dcl->update_interval : GUI_REFRESH_INTERVAL_DEFAULT;
if (interval > dcl_interval) {
interval = dcl_interval;
}
}
if (ds->update_interval != interval) {
ds->update_interval = interval;
QTAILQ_FOREACH(con, &consoles, next) {
if (con->hw_ops->update_interval) {
con->hw_ops->update_interval(con->hw, interval);
}
}
trace_console_refresh(interval);
}
ds->last_update = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
timer_mod(ds->gui_timer, ds->last_update + interval);
}
static void gui_setup_refresh(DisplayState *ds)
{
DisplayChangeListener *dcl;
bool need_timer = false;
bool have_gfx = false;
bool have_text = false;
QLIST_FOREACH(dcl, &ds->listeners, next) {
if (dcl->ops->dpy_refresh != NULL) {
need_timer = true;
}
if (dcl->ops->dpy_gfx_update != NULL) {
have_gfx = true;
}
if (dcl->ops->dpy_text_update != NULL) {
have_text = true;
}
}
if (need_timer && ds->gui_timer == NULL) {
ds->gui_timer = timer_new_ms(QEMU_CLOCK_REALTIME, gui_update, ds);
timer_mod(ds->gui_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
}
if (!need_timer && ds->gui_timer != NULL) {
timer_del(ds->gui_timer);
timer_free(ds->gui_timer);
ds->gui_timer = NULL;
}
ds->have_gfx = have_gfx;
ds->have_text = have_text;
}
void graphic_hw_update(QemuConsole *con)
{
if (!con) {
con = active_console;
}
if (con && con->hw_ops->gfx_update) {
con->hw_ops->gfx_update(con->hw);
}
}
void graphic_hw_gl_block(QemuConsole *con, bool block)
{
assert(con != NULL);
con->gl_block = block;
if (con->hw_ops->gl_block) {
con->hw_ops->gl_block(con->hw, block);
}
}
int qemu_console_get_window_id(QemuConsole *con)
{
return con->window_id;
}
void qemu_console_set_window_id(QemuConsole *con, int window_id)
{
con->window_id = window_id;
}
void graphic_hw_invalidate(QemuConsole *con)
{
if (!con) {
con = active_console;
}
if (con && con->hw_ops->invalidate) {
con->hw_ops->invalidate(con->hw);
}
}
static void ppm_save(const char *filename, DisplaySurface *ds,
Error **errp)
{
int width = pixman_image_get_width(ds->image);
int height = pixman_image_get_height(ds->image);
int fd;
FILE *f;
int y;
int ret;
pixman_image_t *linebuf;
trace_ppm_save(filename, ds);
fd = qemu_open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0666);
if (fd == -1) {
error_setg(errp, "failed to open file '%s': %s", filename,
strerror(errno));
return;
}
f = fdopen(fd, "wb");
ret = fprintf(f, "P6\n%d %d\n%d\n", width, height, 255);
if (ret < 0) {
linebuf = NULL;
goto write_err;
}
linebuf = qemu_pixman_linebuf_create(PIXMAN_BE_r8g8b8, width);
for (y = 0; y < height; y++) {
qemu_pixman_linebuf_fill(linebuf, ds->image, width, 0, y);
clearerr(f);
ret = fwrite(pixman_image_get_data(linebuf), 1,
pixman_image_get_stride(linebuf), f);
(void)ret;
if (ferror(f)) {
goto write_err;
}
}
out:
qemu_pixman_image_unref(linebuf);
fclose(f);
return;
write_err:
error_setg(errp, "failed to write to file '%s': %s", filename,
strerror(errno));
unlink(filename);
goto out;
}
void qmp_screendump(const char *filename, bool has_device, const char *device,
bool has_head, int64_t head, Error **errp)
{
QemuConsole *con;
DisplaySurface *surface;
if (has_device) {
con = qemu_console_lookup_by_device_name(device, has_head ? head : 0,
errp);
if (!con) {
return;
}
} else {
if (has_head) {
error_setg(errp, "'head' must be specified together with 'device'");
return;
}
con = qemu_console_lookup_by_index(0);
if (!con) {
error_setg(errp, "There is no console to take a screendump from");
return;
}
}
graphic_hw_update(con);
surface = qemu_console_surface(con);
if (!surface) {
error_setg(errp, "no surface");
return;
}
ppm_save(filename, surface, errp);
}
void graphic_hw_text_update(QemuConsole *con, console_ch_t *chardata)
{
if (!con) {
con = active_console;
}
if (con && con->hw_ops->text_update) {
con->hw_ops->text_update(con->hw, chardata);
}
}
static void vga_fill_rect(QemuConsole *con,
int posx, int posy, int width, int height,
pixman_color_t color)
{
DisplaySurface *surface = qemu_console_surface(con);
pixman_rectangle16_t rect = {
.x = posx, .y = posy, .width = width, .height = height
};
pixman_image_fill_rectangles(PIXMAN_OP_SRC, surface->image,
&color, 1, &rect);
}
/* copy from (xs, ys) to (xd, yd) a rectangle of size (w, h) */
static void vga_bitblt(QemuConsole *con,
int xs, int ys, int xd, int yd, int w, int h)
{
DisplaySurface *surface = qemu_console_surface(con);
pixman_image_composite(PIXMAN_OP_SRC,
surface->image, NULL, surface->image,
xs, ys, 0, 0, xd, yd, w, h);
}
/***********************************************************/
/* basic char display */
#define FONT_HEIGHT 16
#define FONT_WIDTH 8
#include "vgafont.h"
#define QEMU_RGB(r, g, b) \
{ .red = r << 8, .green = g << 8, .blue = b << 8, .alpha = 0xffff }
static const pixman_color_t color_table_rgb[2][8] = {
{ /* dark */
[QEMU_COLOR_BLACK] = QEMU_RGB(0x00, 0x00, 0x00), /* black */
[QEMU_COLOR_BLUE] = QEMU_RGB(0x00, 0x00, 0xaa), /* blue */
[QEMU_COLOR_GREEN] = QEMU_RGB(0x00, 0xaa, 0x00), /* green */
[QEMU_COLOR_CYAN] = QEMU_RGB(0x00, 0xaa, 0xaa), /* cyan */
[QEMU_COLOR_RED] = QEMU_RGB(0xaa, 0x00, 0x00), /* red */
[QEMU_COLOR_MAGENTA] = QEMU_RGB(0xaa, 0x00, 0xaa), /* magenta */
[QEMU_COLOR_YELLOW] = QEMU_RGB(0xaa, 0xaa, 0x00), /* yellow */
[QEMU_COLOR_WHITE] = QEMU_RGB(0xaa, 0xaa, 0xaa), /* white */
},
{ /* bright */
[QEMU_COLOR_BLACK] = QEMU_RGB(0x00, 0x00, 0x00), /* black */
[QEMU_COLOR_BLUE] = QEMU_RGB(0x00, 0x00, 0xff), /* blue */
[QEMU_COLOR_GREEN] = QEMU_RGB(0x00, 0xff, 0x00), /* green */
[QEMU_COLOR_CYAN] = QEMU_RGB(0x00, 0xff, 0xff), /* cyan */
[QEMU_COLOR_RED] = QEMU_RGB(0xff, 0x00, 0x00), /* red */
[QEMU_COLOR_MAGENTA] = QEMU_RGB(0xff, 0x00, 0xff), /* magenta */
[QEMU_COLOR_YELLOW] = QEMU_RGB(0xff, 0xff, 0x00), /* yellow */
[QEMU_COLOR_WHITE] = QEMU_RGB(0xff, 0xff, 0xff), /* white */
}
};
static void vga_putcharxy(QemuConsole *s, int x, int y, int ch,
TextAttributes *t_attrib)
{
static pixman_image_t *glyphs[256];
DisplaySurface *surface = qemu_console_surface(s);
pixman_color_t fgcol, bgcol;
if (t_attrib->invers) {
bgcol = color_table_rgb[t_attrib->bold][t_attrib->fgcol];
fgcol = color_table_rgb[t_attrib->bold][t_attrib->bgcol];
} else {
fgcol = color_table_rgb[t_attrib->bold][t_attrib->fgcol];
bgcol = color_table_rgb[t_attrib->bold][t_attrib->bgcol];
}
if (!glyphs[ch]) {
glyphs[ch] = qemu_pixman_glyph_from_vgafont(FONT_HEIGHT, vgafont16, ch);
}
qemu_pixman_glyph_render(glyphs[ch], surface->image,
&fgcol, &bgcol, x, y, FONT_WIDTH, FONT_HEIGHT);
}
static void text_console_resize(QemuConsole *s)
{
TextCell *cells, *c, *c1;
int w1, x, y, last_width;
last_width = s->width;
s->width = surface_width(s->surface) / FONT_WIDTH;
s->height = surface_height(s->surface) / FONT_HEIGHT;
w1 = last_width;
if (s->width < w1)
w1 = s->width;
cells = g_new(TextCell, s->width * s->total_height + 1);
for(y = 0; y < s->total_height; y++) {
c = &cells[y * s->width];
if (w1 > 0) {
c1 = &s->cells[y * last_width];
for(x = 0; x < w1; x++) {
*c++ = *c1++;
}
}
for(x = w1; x < s->width; x++) {
c->ch = ' ';
c->t_attrib = s->t_attrib_default;
c++;
}
}
g_free(s->cells);
s->cells = cells;
}
static inline void text_update_xy(QemuConsole *s, int x, int y)
{
s->text_x[0] = MIN(s->text_x[0], x);
s->text_x[1] = MAX(s->text_x[1], x);
s->text_y[0] = MIN(s->text_y[0], y);
s->text_y[1] = MAX(s->text_y[1], y);
}
static void invalidate_xy(QemuConsole *s, int x, int y)
{
if (!qemu_console_is_visible(s)) {
return;
}
if (s->update_x0 > x * FONT_WIDTH)
s->update_x0 = x * FONT_WIDTH;
if (s->update_y0 > y * FONT_HEIGHT)
s->update_y0 = y * FONT_HEIGHT;
if (s->update_x1 < (x + 1) * FONT_WIDTH)
s->update_x1 = (x + 1) * FONT_WIDTH;
if (s->update_y1 < (y + 1) * FONT_HEIGHT)
s->update_y1 = (y + 1) * FONT_HEIGHT;
}
static void update_xy(QemuConsole *s, int x, int y)
{
TextCell *c;
int y1, y2;
if (s->ds->have_text) {
text_update_xy(s, x, y);
}
y1 = (s->y_base + y) % s->total_height;
y2 = y1 - s->y_displayed;
if (y2 < 0) {
y2 += s->total_height;
}
if (y2 < s->height) {
if (x >= s->width) {
x = s->width - 1;
}
c = &s->cells[y1 * s->width + x];
vga_putcharxy(s, x, y2, c->ch,
&(c->t_attrib));
invalidate_xy(s, x, y2);
}
}
static void console_show_cursor(QemuConsole *s, int show)
{
TextCell *c;
int y, y1;
int x = s->x;
if (s->ds->have_text) {
s->cursor_invalidate = 1;
}
if (x >= s->width) {
x = s->width - 1;
}
y1 = (s->y_base + s->y) % s->total_height;
y = y1 - s->y_displayed;
if (y < 0) {
y += s->total_height;
}
if (y < s->height) {
c = &s->cells[y1 * s->width + x];
if (show && cursor_visible_phase) {
TextAttributes t_attrib = s->t_attrib_default;
t_attrib.invers = !(t_attrib.invers); /* invert fg and bg */
vga_putcharxy(s, x, y, c->ch, &t_attrib);
} else {
vga_putcharxy(s, x, y, c->ch, &(c->t_attrib));
}
invalidate_xy(s, x, y);
}
}
static void console_refresh(QemuConsole *s)
{
DisplaySurface *surface = qemu_console_surface(s);
TextCell *c;
int x, y, y1;
if (s->ds->have_text) {
s->text_x[0] = 0;
s->text_y[0] = 0;
s->text_x[1] = s->width - 1;
s->text_y[1] = s->height - 1;
s->cursor_invalidate = 1;
}
vga_fill_rect(s, 0, 0, surface_width(surface), surface_height(surface),
color_table_rgb[0][QEMU_COLOR_BLACK]);
y1 = s->y_displayed;
for (y = 0; y < s->height; y++) {
c = s->cells + y1 * s->width;
for (x = 0; x < s->width; x++) {
vga_putcharxy(s, x, y, c->ch,
&(c->t_attrib));
c++;
}
if (++y1 == s->total_height) {
y1 = 0;
}
}
console_show_cursor(s, 1);
dpy_gfx_update(s, 0, 0,
surface_width(surface), surface_height(surface));
}
static void console_scroll(QemuConsole *s, int ydelta)
{
int i, y1;
if (ydelta > 0) {
for(i = 0; i < ydelta; i++) {
if (s->y_displayed == s->y_base)
break;
if (++s->y_displayed == s->total_height)
s->y_displayed = 0;
}
} else {
ydelta = -ydelta;
i = s->backscroll_height;
if (i > s->total_height - s->height)
i = s->total_height - s->height;
y1 = s->y_base - i;
if (y1 < 0)
y1 += s->total_height;
for(i = 0; i < ydelta; i++) {
if (s->y_displayed == y1)
break;
if (--s->y_displayed < 0)
s->y_displayed = s->total_height - 1;
}
}
console_refresh(s);
}
static void console_put_lf(QemuConsole *s)
{
TextCell *c;
int x, y1;
s->y++;
if (s->y >= s->height) {
s->y = s->height - 1;
if (s->y_displayed == s->y_base) {
if (++s->y_displayed == s->total_height)
s->y_displayed = 0;
}
if (++s->y_base == s->total_height)
s->y_base = 0;
if (s->backscroll_height < s->total_height)
s->backscroll_height++;
y1 = (s->y_base + s->height - 1) % s->total_height;
c = &s->cells[y1 * s->width];
for(x = 0; x < s->width; x++) {
c->ch = ' ';
c->t_attrib = s->t_attrib_default;
c++;
}
if (s->y_displayed == s->y_base) {
if (s->ds->have_text) {
s->text_x[0] = 0;
s->text_y[0] = 0;
s->text_x[1] = s->width - 1;
s->text_y[1] = s->height - 1;
}
vga_bitblt(s, 0, FONT_HEIGHT, 0, 0,
s->width * FONT_WIDTH,
(s->height - 1) * FONT_HEIGHT);
vga_fill_rect(s, 0, (s->height - 1) * FONT_HEIGHT,
s->width * FONT_WIDTH, FONT_HEIGHT,
color_table_rgb[0][s->t_attrib_default.bgcol]);
s->update_x0 = 0;
s->update_y0 = 0;
s->update_x1 = s->width * FONT_WIDTH;
s->update_y1 = s->height * FONT_HEIGHT;
}
}
}
/* Set console attributes depending on the current escape codes.
* NOTE: I know this code is not very efficient (checking every color for it
* self) but it is more readable and better maintainable.
*/
static void console_handle_escape(QemuConsole *s)
{
int i;
for (i=0; i<s->nb_esc_params; i++) {
switch (s->esc_params[i]) {
case 0: /* reset all console attributes to default */
s->t_attrib = s->t_attrib_default;
break;
case 1:
s->t_attrib.bold = 1;
break;
case 4:
s->t_attrib.uline = 1;
break;
case 5:
s->t_attrib.blink = 1;
break;
case 7:
s->t_attrib.invers = 1;
break;
case 8:
s->t_attrib.unvisible = 1;
break;
case 22:
s->t_attrib.bold = 0;
break;
case 24:
s->t_attrib.uline = 0;
break;
case 25:
s->t_attrib.blink = 0;
break;
case 27:
s->t_attrib.invers = 0;
break;
case 28:
s->t_attrib.unvisible = 0;
break;
/* set foreground color */
case 30:
s->t_attrib.fgcol = QEMU_COLOR_BLACK;
break;
case 31:
s->t_attrib.fgcol = QEMU_COLOR_RED;
break;
case 32:
s->t_attrib.fgcol = QEMU_COLOR_GREEN;
break;
case 33:
s->t_attrib.fgcol = QEMU_COLOR_YELLOW;
break;
case 34:
s->t_attrib.fgcol = QEMU_COLOR_BLUE;
break;
case 35:
s->t_attrib.fgcol = QEMU_COLOR_MAGENTA;
break;
case 36:
s->t_attrib.fgcol = QEMU_COLOR_CYAN;
break;
case 37:
s->t_attrib.fgcol = QEMU_COLOR_WHITE;
break;
/* set background color */
case 40:
s->t_attrib.bgcol = QEMU_COLOR_BLACK;
break;
case 41:
s->t_attrib.bgcol = QEMU_COLOR_RED;
break;
case 42:
s->t_attrib.bgcol = QEMU_COLOR_GREEN;
break;
case 43:
s->t_attrib.bgcol = QEMU_COLOR_YELLOW;
break;
case 44:
s->t_attrib.bgcol = QEMU_COLOR_BLUE;
break;
case 45:
s->t_attrib.bgcol = QEMU_COLOR_MAGENTA;
break;
case 46:
s->t_attrib.bgcol = QEMU_COLOR_CYAN;
break;
case 47:
s->t_attrib.bgcol = QEMU_COLOR_WHITE;
break;
}
}
}
static void console_clear_xy(QemuConsole *s, int x, int y)
{
int y1 = (s->y_base + y) % s->total_height;
if (x >= s->width) {
x = s->width - 1;
}
TextCell *c = &s->cells[y1 * s->width + x];
c->ch = ' ';
c->t_attrib = s->t_attrib_default;
update_xy(s, x, y);
}
static void console_put_one(QemuConsole *s, int ch)
{
TextCell *c;
int y1;
if (s->x >= s->width) {
/* line wrap */
s->x = 0;
console_put_lf(s);
}
y1 = (s->y_base + s->y) % s->total_height;
c = &s->cells[y1 * s->width + s->x];
c->ch = ch;
c->t_attrib = s->t_attrib;
update_xy(s, s->x, s->y);
s->x++;
}
static void console_respond_str(QemuConsole *s, const char *buf)
{
while (*buf) {
console_put_one(s, *buf);
buf++;
}
}
/* set cursor, checking bounds */
static void set_cursor(QemuConsole *s, int x, int y)
{
if (x < 0) {
x = 0;
}
if (y < 0) {
y = 0;
}
if (y >= s->height) {
y = s->height - 1;
}
if (x >= s->width) {
x = s->width - 1;
}
s->x = x;
s->y = y;
}
static void console_putchar(QemuConsole *s, int ch)
{
int i;
int x, y;
char response[40];
switch(s->state) {
case TTY_STATE_NORM:
switch(ch) {
case '\r': /* carriage return */
s->x = 0;
break;
case '\n': /* newline */
console_put_lf(s);
break;
case '\b': /* backspace */
if (s->x > 0)
s->x--;
break;
case '\t': /* tabspace */
if (s->x + (8 - (s->x % 8)) > s->width) {
s->x = 0;
console_put_lf(s);
} else {
s->x = s->x + (8 - (s->x % 8));
}
break;
case '\a': /* alert aka. bell */
/* TODO: has to be implemented */
break;
case 14:
/* SI (shift in), character set 0 (ignored) */
break;
case 15:
/* SO (shift out), character set 1 (ignored) */
break;
case 27: /* esc (introducing an escape sequence) */
s->state = TTY_STATE_ESC;
break;
default:
console_put_one(s, ch);
break;
}
break;
case TTY_STATE_ESC: /* check if it is a terminal escape sequence */
if (ch == '[') {
for(i=0;i<MAX_ESC_PARAMS;i++)
s->esc_params[i] = 0;
s->nb_esc_params = 0;
s->state = TTY_STATE_CSI;
} else {
s->state = TTY_STATE_NORM;
}
break;
case TTY_STATE_CSI: /* handle escape sequence parameters */
if (ch >= '0' && ch <= '9') {
if (s->nb_esc_params < MAX_ESC_PARAMS) {
int *param = &s->esc_params[s->nb_esc_params];
int digit = (ch - '0');
*param = (*param <= (INT_MAX - digit) / 10) ?
*param * 10 + digit : INT_MAX;
}
} else {
if (s->nb_esc_params < MAX_ESC_PARAMS)
s->nb_esc_params++;
if (ch == ';' || ch == '?') {
break;
}
trace_console_putchar_csi(s->esc_params[0], s->esc_params[1],
ch, s->nb_esc_params);
s->state = TTY_STATE_NORM;
switch(ch) {
case 'A':
/* move cursor up */
if (s->esc_params[0] == 0) {
s->esc_params[0] = 1;
}
set_cursor(s, s->x, s->y - s->esc_params[0]);
break;
case 'B':
/* move cursor down */
if (s->esc_params[0] == 0) {
s->esc_params[0] = 1;
}
set_cursor(s, s->x, s->y + s->esc_params[0]);
break;
case 'C':
/* move cursor right */
if (s->esc_params[0] == 0) {
s->esc_params[0] = 1;
}
set_cursor(s, s->x + s->esc_params[0], s->y);
break;
case 'D':
/* move cursor left */
if (s->esc_params[0] == 0) {
s->esc_params[0] = 1;
}
set_cursor(s, s->x - s->esc_params[0], s->y);
break;
case 'G':
/* move cursor to column */
set_cursor(s, s->esc_params[0] - 1, s->y);
break;
case 'f':
case 'H':
/* move cursor to row, column */
set_cursor(s, s->esc_params[1] - 1, s->esc_params[0] - 1);
break;
case 'J':
switch (s->esc_params[0]) {
case 0:
/* clear to end of screen */
for (y = s->y; y < s->height; y++) {
for (x = 0; x < s->width; x++) {
if (y == s->y && x < s->x) {
continue;
}
console_clear_xy(s, x, y);
}
}
break;
case 1:
/* clear from beginning of screen */
for (y = 0; y <= s->y; y++) {
for (x = 0; x < s->width; x++) {
if (y == s->y && x > s->x) {
break;
}
console_clear_xy(s, x, y);
}
}
break;
case 2:
/* clear entire screen */
for (y = 0; y <= s->height; y++) {
for (x = 0; x < s->width; x++) {
console_clear_xy(s, x, y);
}
}
break;
}
break;
case 'K':
switch (s->esc_params[0]) {
case 0:
/* clear to eol */
for(x = s->x; x < s->width; x++) {
console_clear_xy(s, x, s->y);
}
break;
case 1:
/* clear from beginning of line */
for (x = 0; x <= s->x && x < s->width; x++) {
console_clear_xy(s, x, s->y);
}
break;
case 2:
/* clear entire line */
for(x = 0; x < s->width; x++) {
console_clear_xy(s, x, s->y);
}
break;
}
break;
case 'm':
console_handle_escape(s);
break;
case 'n':
switch (s->esc_params[0]) {
case 5:
/* report console status (always succeed)*/
console_respond_str(s, "\033[0n");
break;
case 6:
/* report cursor position */
sprintf(response, "\033[%d;%dR",
(s->y_base + s->y) % s->total_height + 1,
s->x + 1);
console_respond_str(s, response);
break;
}
break;
case 's':
/* save cursor position */
s->x_saved = s->x;
s->y_saved = s->y;
break;
case 'u':
/* restore cursor position */
s->x = s->x_saved;
s->y = s->y_saved;
break;
default:
trace_console_putchar_unhandled(ch);
break;
}
break;
}
}
}
void console_select(unsigned int index)
{
DisplayChangeListener *dcl;
QemuConsole *s;
trace_console_select(index);
s = qemu_console_lookup_by_index(index);
if (s) {
DisplayState *ds = s->ds;
active_console = s;
if (ds->have_gfx) {
QLIST_FOREACH(dcl, &ds->listeners, next) {
if (dcl->con != NULL) {
continue;
}
if (dcl->ops->dpy_gfx_switch) {
dcl->ops->dpy_gfx_switch(dcl, s->surface);
}
}
if (s->surface) {
dpy_gfx_update(s, 0, 0, surface_width(s->surface),
surface_height(s->surface));
}
}
if (ds->have_text) {
dpy_text_resize(s, s->width, s->height);
}
text_console_update_cursor(NULL);
}
}
typedef struct VCChardev {
Chardev parent;
QemuConsole *console;
} VCChardev;
#define TYPE_CHARDEV_VC "chardev-vc"
#define VC_CHARDEV(obj) OBJECT_CHECK(VCChardev, (obj), TYPE_CHARDEV_VC)
static int vc_chr_write(Chardev *chr, const uint8_t *buf, int len)
{
VCChardev *drv = VC_CHARDEV(chr);
QemuConsole *s = drv->console;
int i;
if (!s->ds) {
return 0;
}
s->update_x0 = s->width * FONT_WIDTH;
s->update_y0 = s->height * FONT_HEIGHT;
s->update_x1 = 0;
s->update_y1 = 0;
console_show_cursor(s, 0);
for(i = 0; i < len; i++) {
console_putchar(s, buf[i]);
}
console_show_cursor(s, 1);
if (s->ds->have_gfx && s->update_x0 < s->update_x1) {
dpy_gfx_update(s, s->update_x0, s->update_y0,
s->update_x1 - s->update_x0,
s->update_y1 - s->update_y0);
}
return len;
}
static void kbd_send_chars(void *opaque)
{
QemuConsole *s = opaque;
int len;
uint8_t buf[16];
len = qemu_chr_be_can_write(s->chr);
if (len > s->out_fifo.count)
len = s->out_fifo.count;
if (len > 0) {
if (len > sizeof(buf))
len = sizeof(buf);
qemu_fifo_read(&s->out_fifo, buf, len);
qemu_chr_be_write(s->chr, buf, len);
}
/* characters are pending: we send them a bit later (XXX:
horrible, should change char device API) */
if (s->out_fifo.count > 0) {
timer_mod(s->kbd_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1);
}
}
/* called when an ascii key is pressed */
void kbd_put_keysym_console(QemuConsole *s, int keysym)
{
uint8_t buf[16], *q;
CharBackend *be;
int c;
if (!s || (s->console_type == GRAPHIC_CONSOLE))
return;
switch(keysym) {
case QEMU_KEY_CTRL_UP:
console_scroll(s, -1);
break;
case QEMU_KEY_CTRL_DOWN:
console_scroll(s, 1);
break;
case QEMU_KEY_CTRL_PAGEUP:
console_scroll(s, -10);
break;
case QEMU_KEY_CTRL_PAGEDOWN:
console_scroll(s, 10);
break;
default:
/* convert the QEMU keysym to VT100 key string */
q = buf;
if (keysym >= 0xe100 && keysym <= 0xe11f) {
*q++ = '\033';
*q++ = '[';
c = keysym - 0xe100;
if (c >= 10)
*q++ = '0' + (c / 10);
*q++ = '0' + (c % 10);
*q++ = '~';
} else if (keysym >= 0xe120 && keysym <= 0xe17f) {
*q++ = '\033';
*q++ = '[';
*q++ = keysym & 0xff;
} else if (s->echo && (keysym == '\r' || keysym == '\n')) {
vc_chr_write(s->chr, (const uint8_t *) "\r", 1);
*q++ = '\n';
} else {
*q++ = keysym;
}
if (s->echo) {
vc_chr_write(s->chr, buf, q - buf);
}
be = s->chr->be;
if (be && be->chr_read) {
qemu_fifo_write(&s->out_fifo, buf, q - buf);
kbd_send_chars(s);
}
break;
}
}
static const int qcode_to_keysym[Q_KEY_CODE__MAX] = {
[Q_KEY_CODE_UP] = QEMU_KEY_UP,
[Q_KEY_CODE_DOWN] = QEMU_KEY_DOWN,
[Q_KEY_CODE_RIGHT] = QEMU_KEY_RIGHT,
[Q_KEY_CODE_LEFT] = QEMU_KEY_LEFT,
[Q_KEY_CODE_HOME] = QEMU_KEY_HOME,
[Q_KEY_CODE_END] = QEMU_KEY_END,
[Q_KEY_CODE_PGUP] = QEMU_KEY_PAGEUP,
[Q_KEY_CODE_PGDN] = QEMU_KEY_PAGEDOWN,
[Q_KEY_CODE_DELETE] = QEMU_KEY_DELETE,
[Q_KEY_CODE_BACKSPACE] = QEMU_KEY_BACKSPACE,
};
static const int ctrl_qcode_to_keysym[Q_KEY_CODE__MAX] = {
[Q_KEY_CODE_UP] = QEMU_KEY_CTRL_UP,
[Q_KEY_CODE_DOWN] = QEMU_KEY_CTRL_DOWN,
[Q_KEY_CODE_RIGHT] = QEMU_KEY_CTRL_RIGHT,
[Q_KEY_CODE_LEFT] = QEMU_KEY_CTRL_LEFT,
[Q_KEY_CODE_HOME] = QEMU_KEY_CTRL_HOME,
[Q_KEY_CODE_END] = QEMU_KEY_CTRL_END,
[Q_KEY_CODE_PGUP] = QEMU_KEY_CTRL_PAGEUP,
[Q_KEY_CODE_PGDN] = QEMU_KEY_CTRL_PAGEDOWN,
};
bool kbd_put_qcode_console(QemuConsole *s, int qcode, bool ctrl)
{
int keysym;
keysym = ctrl ? ctrl_qcode_to_keysym[qcode] : qcode_to_keysym[qcode];
if (keysym == 0) {
return false;
}
kbd_put_keysym_console(s, keysym);
return true;
}
void kbd_put_string_console(QemuConsole *s, const char *str, int len)
{
int i;
for (i = 0; i < len && str[i]; i++) {
kbd_put_keysym_console(s, str[i]);
}
}
void kbd_put_keysym(int keysym)
{
kbd_put_keysym_console(active_console, keysym);
}
static void text_console_invalidate(void *opaque)
{
QemuConsole *s = (QemuConsole *) opaque;
if (s->ds->have_text && s->console_type == TEXT_CONSOLE) {
text_console_resize(s);
}
console_refresh(s);
}
static void text_console_update(void *opaque, console_ch_t *chardata)
{
QemuConsole *s = (QemuConsole *) opaque;
int i, j, src;
if (s->text_x[0] <= s->text_x[1]) {
src = (s->y_base + s->text_y[0]) * s->width;
chardata += s->text_y[0] * s->width;
for (i = s->text_y[0]; i <= s->text_y[1]; i ++)
for (j = 0; j < s->width; j++, src++) {
console_write_ch(chardata ++,
ATTR2CHTYPE(s->cells[src].ch,
s->cells[src].t_attrib.fgcol,
s->cells[src].t_attrib.bgcol,
s->cells[src].t_attrib.bold));
}
dpy_text_update(s, s->text_x[0], s->text_y[0],
s->text_x[1] - s->text_x[0], i - s->text_y[0]);
s->text_x[0] = s->width;
s->text_y[0] = s->height;
s->text_x[1] = 0;
s->text_y[1] = 0;
}
if (s->cursor_invalidate) {
dpy_text_cursor(s, s->x, s->y);
s->cursor_invalidate = 0;
}
}
static QemuConsole *new_console(DisplayState *ds, console_type_t console_type,
uint32_t head)
{
Object *obj;
QemuConsole *s;
int i;
obj = object_new(TYPE_QEMU_CONSOLE);
s = QEMU_CONSOLE(obj);
s->head = head;
object_property_add_link(obj, "device", TYPE_DEVICE,
(Object **)&s->device,
object_property_allow_set_link,
OBJ_PROP_LINK_STRONG,
&error_abort);
object_property_add_uint32_ptr(obj, "head",
&s->head, &error_abort);
if (!active_console || ((active_console->console_type != GRAPHIC_CONSOLE) &&
(console_type == GRAPHIC_CONSOLE))) {
active_console = s;
}
s->ds = ds;
s->console_type = console_type;
if (QTAILQ_EMPTY(&consoles)) {
s->index = 0;
QTAILQ_INSERT_TAIL(&consoles, s, next);
} else if (console_type != GRAPHIC_CONSOLE || qdev_hotplug) {
QemuConsole *last = QTAILQ_LAST(&consoles);
s->index = last->index + 1;
QTAILQ_INSERT_TAIL(&consoles, s, next);
} else {
/*
* HACK: Put graphical consoles before text consoles.
*
* Only do that for coldplugged devices. After initial device
* initialization we will not renumber the consoles any more.
*/
QemuConsole *c = QTAILQ_FIRST(&consoles);
while (QTAILQ_NEXT(c, next) != NULL &&
c->console_type == GRAPHIC_CONSOLE) {
c = QTAILQ_NEXT(c, next);
}
if (c->console_type == GRAPHIC_CONSOLE) {
/* have no text consoles */
s->index = c->index + 1;
QTAILQ_INSERT_AFTER(&consoles, c, s, next);
} else {
s->index = c->index;
QTAILQ_INSERT_BEFORE(c, s, next);
/* renumber text consoles */
for (i = s->index + 1; c != NULL; c = QTAILQ_NEXT(c, next), i++) {
c->index = i;
}
}
}
return s;
}
static void qemu_alloc_display(DisplaySurface *surface, int width, int height)
{
qemu_pixman_image_unref(surface->image);
surface->image = NULL;
surface->format = PIXMAN_x8r8g8b8;
surface->image = pixman_image_create_bits(surface->format,
width, height,
NULL, width * 4);
assert(surface->image != NULL);
surface->flags = QEMU_ALLOCATED_FLAG;
}
DisplaySurface *qemu_create_displaysurface(int width, int height)
{
DisplaySurface *surface = g_new0(DisplaySurface, 1);
trace_displaysurface_create(surface, width, height);
qemu_alloc_display(surface, width, height);
return surface;
}
DisplaySurface *qemu_create_displaysurface_from(int width, int height,
pixman_format_code_t format,
int linesize, uint8_t *data)
{
DisplaySurface *surface = g_new0(DisplaySurface, 1);
trace_displaysurface_create_from(surface, width, height, format);
surface->format = format;
surface->image = pixman_image_create_bits(surface->format,
width, height,
(void *)data, linesize);
assert(surface->image != NULL);
return surface;
}
DisplaySurface *qemu_create_displaysurface_pixman(pixman_image_t *image)
{
DisplaySurface *surface = g_new0(DisplaySurface, 1);
trace_displaysurface_create_pixman(surface);
surface->format = pixman_image_get_format(image);
surface->image = pixman_image_ref(image);
return surface;
}
DisplaySurface *qemu_create_message_surface(int w, int h,
const char *msg)
{
DisplaySurface *surface = qemu_create_displaysurface(w, h);
pixman_color_t bg = color_table_rgb[0][QEMU_COLOR_BLACK];
pixman_color_t fg = color_table_rgb[0][QEMU_COLOR_WHITE];
pixman_image_t *glyph;
int len, x, y, i;
len = strlen(msg);
x = (w / FONT_WIDTH - len) / 2;
y = (h / FONT_HEIGHT - 1) / 2;
for (i = 0; i < len; i++) {
glyph = qemu_pixman_glyph_from_vgafont(FONT_HEIGHT, vgafont16, msg[i]);
qemu_pixman_glyph_render(glyph, surface->image, &fg, &bg,
x+i, y, FONT_WIDTH, FONT_HEIGHT);
qemu_pixman_image_unref(glyph);
}
return surface;
}
void qemu_free_displaysurface(DisplaySurface *surface)
{
if (surface == NULL) {
return;
}
trace_displaysurface_free(surface);
qemu_pixman_image_unref(surface->image);
g_free(surface);
}
bool console_has_gl(QemuConsole *con)
{
return con->gl != NULL;
}
bool console_has_gl_dmabuf(QemuConsole *con)
{
return con->gl != NULL && con->gl->ops->dpy_gl_scanout_dmabuf != NULL;
}
void register_displaychangelistener(DisplayChangeListener *dcl)
{
static const char nodev[] =
"This VM has no graphic display device.";
static DisplaySurface *dummy;
QemuConsole *con;
assert(!dcl->ds);
if (dcl->ops->dpy_gl_ctx_create) {
/* display has opengl support */
assert(dcl->con);
if (dcl->con->gl) {
fprintf(stderr, "can't register two opengl displays (%s, %s)\n",
dcl->ops->dpy_name, dcl->con->gl->ops->dpy_name);
exit(1);
}
dcl->con->gl = dcl;
}
trace_displaychangelistener_register(dcl, dcl->ops->dpy_name);
dcl->ds = get_alloc_displaystate();
QLIST_INSERT_HEAD(&dcl->ds->listeners, dcl, next);
gui_setup_refresh(dcl->ds);
if (dcl->con) {
dcl->con->dcls++;
con = dcl->con;
} else {
con = active_console;
}
if (dcl->ops->dpy_gfx_switch) {
if (con) {
dcl->ops->dpy_gfx_switch(dcl, con->surface);
} else {
if (!dummy) {
dummy = qemu_create_message_surface(640, 480, nodev);
}
dcl->ops->dpy_gfx_switch(dcl, dummy);
}
}
text_console_update_cursor(NULL);
}
void update_displaychangelistener(DisplayChangeListener *dcl,
uint64_t interval)
{
DisplayState *ds = dcl->ds;
dcl->update_interval = interval;
if (!ds->refreshing && ds->update_interval > interval) {
timer_mod(ds->gui_timer, ds->last_update + interval);
}
}
void unregister_displaychangelistener(DisplayChangeListener *dcl)
{
DisplayState *ds = dcl->ds;
trace_displaychangelistener_unregister(dcl, dcl->ops->dpy_name);
if (dcl->con) {
dcl->con->dcls--;
}
QLIST_REMOVE(dcl, next);
dcl->ds = NULL;
gui_setup_refresh(ds);
}
static void dpy_set_ui_info_timer(void *opaque)
{
QemuConsole *con = opaque;
con->hw_ops->ui_info(con->hw, con->head, &con->ui_info);
}
bool dpy_ui_info_supported(QemuConsole *con)
{
return con->hw_ops->ui_info != NULL;
}
int dpy_set_ui_info(QemuConsole *con, QemuUIInfo *info)
{
assert(con != NULL);
if (!dpy_ui_info_supported(con)) {
return -1;
}
if (memcmp(&con->ui_info, info, sizeof(con->ui_info)) == 0) {
/* nothing changed -- ignore */
return 0;
}
/*
* Typically we get a flood of these as the user resizes the window.
* Wait until the dust has settled (one second without updates), then
* go notify the guest.
*/
con->ui_info = *info;
timer_mod(con->ui_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1000);
return 0;
}
void dpy_gfx_update(QemuConsole *con, int x, int y, int w, int h)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
int width = w;
int height = h;
if (con->surface) {
width = surface_width(con->surface);
height = surface_height(con->surface);
}
x = MAX(x, 0);
y = MAX(y, 0);
x = MIN(x, width);
y = MIN(y, height);
w = MIN(w, width - x);
h = MIN(h, height - y);
if (!qemu_console_is_visible(con)) {
return;
}
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_gfx_update) {
dcl->ops->dpy_gfx_update(dcl, x, y, w, h);
}
}
}
void dpy_gfx_update_full(QemuConsole *con)
{
if (!con->surface) {
return;
}
dpy_gfx_update(con, 0, 0,
surface_width(con->surface),
surface_height(con->surface));
}
void dpy_gfx_replace_surface(QemuConsole *con,
DisplaySurface *surface)
{
DisplayState *s = con->ds;
DisplaySurface *old_surface = con->surface;
DisplayChangeListener *dcl;
assert(old_surface != surface || surface == NULL);
con->surface = surface;
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_gfx_switch) {
dcl->ops->dpy_gfx_switch(dcl, surface);
}
}
qemu_free_displaysurface(old_surface);
}
bool dpy_gfx_check_format(QemuConsole *con,
pixman_format_code_t format)
{
DisplayChangeListener *dcl;
DisplayState *s = con->ds;
QLIST_FOREACH(dcl, &s->listeners, next) {
if (dcl->con && dcl->con != con) {
/* dcl bound to another console -> skip */
continue;
}
if (dcl->ops->dpy_gfx_check_format) {
if (!dcl->ops->dpy_gfx_check_format(dcl, format)) {
return false;
}
} else {
/* default is to whitelist native 32 bpp only */
if (format != qemu_default_pixman_format(32, true)) {
return false;
}
}
}
return true;
}
static void dpy_refresh(DisplayState *s)
{
DisplayChangeListener *dcl;
QLIST_FOREACH(dcl, &s->listeners, next) {
if (dcl->ops->dpy_refresh) {
dcl->ops->dpy_refresh(dcl);
}
}
}
void dpy_text_cursor(QemuConsole *con, int x, int y)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
if (!qemu_console_is_visible(con)) {
return;
}
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_text_cursor) {
dcl->ops->dpy_text_cursor(dcl, x, y);
}
}
}
void dpy_text_update(QemuConsole *con, int x, int y, int w, int h)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
if (!qemu_console_is_visible(con)) {
return;
}
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_text_update) {
dcl->ops->dpy_text_update(dcl, x, y, w, h);
}
}
}
void dpy_text_resize(QemuConsole *con, int w, int h)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
if (!qemu_console_is_visible(con)) {
return;
}
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_text_resize) {
dcl->ops->dpy_text_resize(dcl, w, h);
}
}
}
void dpy_mouse_set(QemuConsole *con, int x, int y, int on)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
if (!qemu_console_is_visible(con)) {
return;
}
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_mouse_set) {
dcl->ops->dpy_mouse_set(dcl, x, y, on);
}
}
}
void dpy_cursor_define(QemuConsole *con, QEMUCursor *cursor)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
if (!qemu_console_is_visible(con)) {
return;
}
QLIST_FOREACH(dcl, &s->listeners, next) {
if (con != (dcl->con ? dcl->con : active_console)) {
continue;
}
if (dcl->ops->dpy_cursor_define) {
dcl->ops->dpy_cursor_define(dcl, cursor);
}
}
}
bool dpy_cursor_define_supported(QemuConsole *con)
{
DisplayState *s = con->ds;
DisplayChangeListener *dcl;
QLIST_FOREACH(dcl, &s->listeners, next) {
if (dcl->ops->dpy_cursor_define) {
return true;
}
}
return false;
}
QEMUGLContext dpy_gl_ctx_create(QemuConsole *con,
struct QEMUGLParams *qparams)
{
assert(con->gl);
return con->gl->ops->dpy_gl_ctx_create(con->gl, qparams);
}
void dpy_gl_ctx_destroy(QemuConsole *con, QEMUGLContext ctx)
{
assert(con->gl);
con->gl->ops->dpy_gl_ctx_destroy(con->gl, ctx);
}
int dpy_gl_ctx_make_current(QemuConsole *con, QEMUGLContext ctx)
{
assert(con->gl);
return con->gl->ops->dpy_gl_ctx_make_current(con->gl, ctx);
}
QEMUGLContext dpy_gl_ctx_get_current(QemuConsole *con)
{
assert(con->gl);
return con->gl->ops->dpy_gl_ctx_get_current(con->gl);
}
void dpy_gl_scanout_disable(QemuConsole *con)
{
assert(con->gl);
if (con->gl->ops->dpy_gl_scanout_disable) {
con->gl->ops->dpy_gl_scanout_disable(con->gl);
} else {
con->gl->ops->dpy_gl_scanout_texture(con->gl, 0, false, 0, 0,
0, 0, 0, 0);
}
}
void dpy_gl_scanout_texture(QemuConsole *con,
uint32_t backing_id,
bool backing_y_0_top,
uint32_t backing_width,
uint32_t backing_height,
uint32_t x, uint32_t y,
uint32_t width, uint32_t height)
{
assert(con->gl);
con->gl->ops->dpy_gl_scanout_texture(con->gl, backing_id,
backing_y_0_top,
backing_width, backing_height,
x, y, width, height);
}
void dpy_gl_scanout_dmabuf(QemuConsole *con,
QemuDmaBuf *dmabuf)
{
assert(con->gl);
con->gl->ops->dpy_gl_scanout_dmabuf(con->gl, dmabuf);
}
void dpy_gl_cursor_dmabuf(QemuConsole *con, QemuDmaBuf *dmabuf,
bool have_hot, uint32_t hot_x, uint32_t hot_y)
{
assert(con->gl);
if (con->gl->ops->dpy_gl_cursor_dmabuf) {
con->gl->ops->dpy_gl_cursor_dmabuf(con->gl, dmabuf,
have_hot, hot_x, hot_y);
}
}
void dpy_gl_cursor_position(QemuConsole *con,
uint32_t pos_x, uint32_t pos_y)
{
assert(con->gl);
if (con->gl->ops->dpy_gl_cursor_position) {
con->gl->ops->dpy_gl_cursor_position(con->gl, pos_x, pos_y);
}
}
void dpy_gl_release_dmabuf(QemuConsole *con,
QemuDmaBuf *dmabuf)
{
assert(con->gl);
if (con->gl->ops->dpy_gl_release_dmabuf) {
con->gl->ops->dpy_gl_release_dmabuf(con->gl, dmabuf);
}
}
void dpy_gl_update(QemuConsole *con,
uint32_t x, uint32_t y, uint32_t w, uint32_t h)
{
assert(con->gl);
con->gl->ops->dpy_gl_update(con->gl, x, y, w, h);
}
/***********************************************************/
/* register display */
/* console.c internal use only */
static DisplayState *get_alloc_displaystate(void)
{
if (!display_state) {
display_state = g_new0(DisplayState, 1);
cursor_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
text_console_update_cursor, NULL);
}
return display_state;
}
/*
* Called by main(), after creating QemuConsoles
* and before initializing ui (sdl/vnc/...).
*/
DisplayState *init_displaystate(void)
{
gchar *name;
QemuConsole *con;
get_alloc_displaystate();
QTAILQ_FOREACH(con, &consoles, next) {
if (con->console_type != GRAPHIC_CONSOLE &&
con->ds == NULL) {
text_console_do_init(con->chr, display_state);
}
/* Hook up into the qom tree here (not in new_console()), once
* all QemuConsoles are created and the order / numbering
* doesn't change any more */
name = g_strdup_printf("console[%d]", con->index);
object_property_add_child(container_get(object_get_root(), "/backend"),
name, OBJECT(con), &error_abort);
g_free(name);
}
return display_state;
}
void graphic_console_set_hwops(QemuConsole *con,
const GraphicHwOps *hw_ops,
void *opaque)
{
con->hw_ops = hw_ops;
con->hw = opaque;
}
QemuConsole *graphic_console_init(DeviceState *dev, uint32_t head,
const GraphicHwOps *hw_ops,
void *opaque)
{
static const char noinit[] =
"Guest has not initialized the display (yet).";
int width = 640;
int height = 480;
QemuConsole *s;
DisplayState *ds;
DisplaySurface *surface;
ds = get_alloc_displaystate();
s = qemu_console_lookup_unused();
if (s) {
trace_console_gfx_reuse(s->index);
if (s->surface) {
width = surface_width(s->surface);
height = surface_height(s->surface);
}
} else {
trace_console_gfx_new();
s = new_console(ds, GRAPHIC_CONSOLE, head);
s->ui_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
dpy_set_ui_info_timer, s);
}
graphic_console_set_hwops(s, hw_ops, opaque);
if (dev) {
object_property_set_link(OBJECT(s), OBJECT(dev), "device",
&error_abort);
}
surface = qemu_create_message_surface(width, height, noinit);
dpy_gfx_replace_surface(s, surface);
return s;
}
static const GraphicHwOps unused_ops = {
/* no callbacks */
};
void graphic_console_close(QemuConsole *con)
{
static const char unplugged[] =
"Guest display has been unplugged";
DisplaySurface *surface;
int width = 640;
int height = 480;
if (con->surface) {
width = surface_width(con->surface);
height = surface_height(con->surface);
}
trace_console_gfx_close(con->index);
object_property_set_link(OBJECT(con), NULL, "device", &error_abort);
graphic_console_set_hwops(con, &unused_ops, NULL);
if (con->gl) {
dpy_gl_scanout_disable(con);
}
surface = qemu_create_message_surface(width, height, unplugged);
dpy_gfx_replace_surface(con, surface);
}
QemuConsole *qemu_console_lookup_by_index(unsigned int index)
{
QemuConsole *con;
QTAILQ_FOREACH(con, &consoles, next) {
if (con->index == index) {
return con;
}
}
return NULL;
}
QemuConsole *qemu_console_lookup_by_device(DeviceState *dev, uint32_t head)
{
QemuConsole *con;
Object *obj;
uint32_t h;
QTAILQ_FOREACH(con, &consoles, next) {
obj = object_property_get_link(OBJECT(con),
"device", &error_abort);
if (DEVICE(obj) != dev) {
continue;
}
h = object_property_get_uint(OBJECT(con),
"head", &error_abort);
if (h != head) {
continue;
}
return con;
}
return NULL;
}
QemuConsole *qemu_console_lookup_by_device_name(const char *device_id,
uint32_t head, Error **errp)
{
DeviceState *dev;
QemuConsole *con;
dev = qdev_find_recursive(sysbus_get_default(), device_id);
if (dev == NULL) {
error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
"Device '%s' not found", device_id);
return NULL;
}
con = qemu_console_lookup_by_device(dev, head);
if (con == NULL) {
error_setg(errp, "Device %s (head %d) is not bound to a QemuConsole",
device_id, head);
return NULL;
}
return con;
}
QemuConsole *qemu_console_lookup_unused(void)
{
QemuConsole *con;
Object *obj;
QTAILQ_FOREACH(con, &consoles, next) {
if (con->hw_ops != &unused_ops) {
continue;
}
obj = object_property_get_link(OBJECT(con),
"device", &error_abort);
if (obj != NULL) {
continue;
}
return con;
}
return NULL;
}
bool qemu_console_is_visible(QemuConsole *con)
{
return (con == active_console) || (con->dcls > 0);
}
bool qemu_console_is_graphic(QemuConsole *con)
{
if (con == NULL) {
con = active_console;
}
return con && (con->console_type == GRAPHIC_CONSOLE);
}
bool qemu_console_is_fixedsize(QemuConsole *con)
{
if (con == NULL) {
con = active_console;
}
return con && (con->console_type != TEXT_CONSOLE);
}
bool qemu_console_is_gl_blocked(QemuConsole *con)
{
assert(con != NULL);
return con->gl_block;
}
char *qemu_console_get_label(QemuConsole *con)
{
if (con->console_type == GRAPHIC_CONSOLE) {
if (con->device) {
return g_strdup(object_get_typename(con->device));
}
return g_strdup("VGA");
} else {
if (con->chr && con->chr->label) {
return g_strdup(con->chr->label);
}
return g_strdup_printf("vc%d", con->index);
}
}
int qemu_console_get_index(QemuConsole *con)
{
if (con == NULL) {
con = active_console;
}
return con ? con->index : -1;
}
uint32_t qemu_console_get_head(QemuConsole *con)
{
if (con == NULL) {
con = active_console;
}
return con ? con->head : -1;
}
QemuUIInfo *qemu_console_get_ui_info(QemuConsole *con)
{
assert(con != NULL);
return &con->ui_info;
}
int qemu_console_get_width(QemuConsole *con, int fallback)
{
if (con == NULL) {
con = active_console;
}
return con ? surface_width(con->surface) : fallback;
}
int qemu_console_get_height(QemuConsole *con, int fallback)
{
if (con == NULL) {
con = active_console;
}
return con ? surface_height(con->surface) : fallback;
}
static void vc_chr_set_echo(Chardev *chr, bool echo)
{
VCChardev *drv = VC_CHARDEV(chr);
QemuConsole *s = drv->console;
s->echo = echo;
}
static void text_console_update_cursor_timer(void)
{
timer_mod(cursor_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME)
+ CONSOLE_CURSOR_PERIOD / 2);
}
static void text_console_update_cursor(void *opaque)
{
QemuConsole *s;
int count = 0;
cursor_visible_phase = !cursor_visible_phase;
QTAILQ_FOREACH(s, &consoles, next) {
if (qemu_console_is_graphic(s) ||
!qemu_console_is_visible(s)) {
continue;
}
count++;
graphic_hw_invalidate(s);
}
if (count) {
text_console_update_cursor_timer();
}
}
static const GraphicHwOps text_console_ops = {
.invalidate = text_console_invalidate,
.text_update = text_console_update,
};
static void text_console_do_init(Chardev *chr, DisplayState *ds)
{
VCChardev *drv = VC_CHARDEV(chr);
QemuConsole *s = drv->console;
int g_width = 80 * FONT_WIDTH;
int g_height = 24 * FONT_HEIGHT;
s->out_fifo.buf = s->out_fifo_buf;
s->out_fifo.buf_size = sizeof(s->out_fifo_buf);
s->kbd_timer = timer_new_ms(QEMU_CLOCK_REALTIME, kbd_send_chars, s);
s->ds = ds;
s->y_displayed = 0;
s->y_base = 0;
s->total_height = DEFAULT_BACKSCROLL;
s->x = 0;
s->y = 0;
if (!s->surface) {
if (active_console && active_console->surface) {
g_width = surface_width(active_console->surface);
g_height = surface_height(active_console->surface);
}
s->surface = qemu_create_displaysurface(g_width, g_height);
}
s->hw_ops = &text_console_ops;
s->hw = s;
/* Set text attribute defaults */
s->t_attrib_default.bold = 0;
s->t_attrib_default.uline = 0;
s->t_attrib_default.blink = 0;
s->t_attrib_default.invers = 0;
s->t_attrib_default.unvisible = 0;
s->t_attrib_default.fgcol = QEMU_COLOR_WHITE;
s->t_attrib_default.bgcol = QEMU_COLOR_BLACK;
/* set current text attributes to default */
s->t_attrib = s->t_attrib_default;
text_console_resize(s);
if (chr->label) {
char msg[128];
int len;
s->t_attrib.bgcol = QEMU_COLOR_BLUE;
len = snprintf(msg, sizeof(msg), "%s console\r\n", chr->label);
vc_chr_write(chr, (uint8_t *)msg, len);
s->t_attrib = s->t_attrib_default;
}
qemu_chr_be_event(chr, CHR_EVENT_OPENED);
}
static void vc_chr_open(Chardev *chr,
ChardevBackend *backend,
bool *be_opened,
Error **errp)
{
ChardevVC *vc = backend->u.vc.data;
VCChardev *drv = VC_CHARDEV(chr);
QemuConsole *s;
unsigned width = 0;
unsigned height = 0;
if (vc->has_width) {
width = vc->width;
} else if (vc->has_cols) {
width = vc->cols * FONT_WIDTH;
}
if (vc->has_height) {
height = vc->height;
} else if (vc->has_rows) {
height = vc->rows * FONT_HEIGHT;
}
trace_console_txt_new(width, height);
if (width == 0 || height == 0) {
s = new_console(NULL, TEXT_CONSOLE, 0);
} else {
s = new_console(NULL, TEXT_CONSOLE_FIXED_SIZE, 0);
s->surface = qemu_create_displaysurface(width, height);
}
if (!s) {
error_setg(errp, "cannot create text console");
return;
}
s->chr = chr;
drv->console = s;
if (display_state) {
text_console_do_init(chr, display_state);
}
/* console/chardev init sometimes completes elsewhere in a 2nd
* stage, so defer OPENED events until they are fully initialized
*/
*be_opened = false;
}
void qemu_console_resize(QemuConsole *s, int width, int height)
{
DisplaySurface *surface;
assert(s->console_type == GRAPHIC_CONSOLE);
if (s->surface && (s->surface->flags & QEMU_ALLOCATED_FLAG) &&
pixman_image_get_width(s->surface->image) == width &&
pixman_image_get_height(s->surface->image) == height) {
return;
}
surface = qemu_create_displaysurface(width, height);
dpy_gfx_replace_surface(s, surface);
}
DisplaySurface *qemu_console_surface(QemuConsole *console)
{
return console->surface;
}
PixelFormat qemu_default_pixelformat(int bpp)
{
pixman_format_code_t fmt = qemu_default_pixman_format(bpp, true);
PixelFormat pf = qemu_pixelformat_from_pixman(fmt);
return pf;
}
static QemuDisplay *dpys[DISPLAY_TYPE__MAX];
void qemu_display_register(QemuDisplay *ui)
{
assert(ui->type < DISPLAY_TYPE__MAX);
dpys[ui->type] = ui;
}
bool qemu_display_find_default(DisplayOptions *opts)
{
static DisplayType prio[] = {
DISPLAY_TYPE_GTK,
DISPLAY_TYPE_SDL,
DISPLAY_TYPE_COCOA
};
int i;
for (i = 0; i < ARRAY_SIZE(prio); i++) {
if (dpys[prio[i]] == NULL) {
ui_module_load_one(DisplayType_str(prio[i]));
}
if (dpys[prio[i]] == NULL) {
continue;
}
opts->type = prio[i];
return true;
}
return false;
}
void qemu_display_early_init(DisplayOptions *opts)
{
assert(opts->type < DISPLAY_TYPE__MAX);
if (opts->type == DISPLAY_TYPE_NONE) {
return;
}
if (dpys[opts->type] == NULL) {
ui_module_load_one(DisplayType_str(opts->type));
}
if (dpys[opts->type] == NULL) {
error_report("Display '%s' is not available.",
DisplayType_str(opts->type));
exit(1);
}
if (dpys[opts->type]->early_init) {
dpys[opts->type]->early_init(opts);
}
}
void qemu_display_init(DisplayState *ds, DisplayOptions *opts)
{
assert(opts->type < DISPLAY_TYPE__MAX);
if (opts->type == DISPLAY_TYPE_NONE) {
return;
}
assert(dpys[opts->type] != NULL);
dpys[opts->type]->init(ds, opts);
}
void qemu_chr_parse_vc(QemuOpts *opts, ChardevBackend *backend, Error **errp)
{
int val;
ChardevVC *vc;
backend->type = CHARDEV_BACKEND_KIND_VC;
vc = backend->u.vc.data = g_new0(ChardevVC, 1);
qemu_chr_parse_common(opts, qapi_ChardevVC_base(vc));
val = qemu_opt_get_number(opts, "width", 0);
if (val != 0) {
vc->has_width = true;
vc->width = val;
}
val = qemu_opt_get_number(opts, "height", 0);
if (val != 0) {
vc->has_height = true;
vc->height = val;
}
val = qemu_opt_get_number(opts, "cols", 0);
if (val != 0) {
vc->has_cols = true;
vc->cols = val;
}
val = qemu_opt_get_number(opts, "rows", 0);
if (val != 0) {
vc->has_rows = true;
vc->rows = val;
}
}
static const TypeInfo qemu_console_info = {
.name = TYPE_QEMU_CONSOLE,
.parent = TYPE_OBJECT,
.instance_size = sizeof(QemuConsole),
.class_size = sizeof(QemuConsoleClass),
};
static void char_vc_class_init(ObjectClass *oc, void *data)
{
ChardevClass *cc = CHARDEV_CLASS(oc);
cc->parse = qemu_chr_parse_vc;
cc->open = vc_chr_open;
cc->chr_write = vc_chr_write;
cc->chr_set_echo = vc_chr_set_echo;
}
static const TypeInfo char_vc_type_info = {
.name = TYPE_CHARDEV_VC,
.parent = TYPE_CHARDEV,
.instance_size = sizeof(VCChardev),
.class_init = char_vc_class_init,
};
void qemu_console_early_init(void)
{
/* set the default vc driver */
if (!object_class_by_name(TYPE_CHARDEV_VC)) {
type_register(&char_vc_type_info);
}
}
static void register_types(void)
{
type_register_static(&qemu_console_info);
}
type_init(register_types);
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