mirror of
https://gitlab.com/qemu-project/qemu.git
synced 2024-10-04 01:49:48 +03:00
c7b1172026
The call is POSIX-specific. Use the dedicated GLib API. (this is a preliminary patch before renaming qemu_set_nonblock()) Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
538 lines
15 KiB
C
538 lines
15 KiB
C
/*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or
|
|
* (at your option) any later version. See the COPYING file in the
|
|
* top-level directory.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qapi/error.h"
|
|
#include "qemu/config-file.h"
|
|
#include "qemu/main-loop.h"
|
|
#include "qemu/module.h"
|
|
#include "qemu/sockets.h"
|
|
#include "ui/input.h"
|
|
#include "qom/object_interfaces.h"
|
|
#include "sysemu/iothread.h"
|
|
#include "block/aio.h"
|
|
|
|
#include <sys/ioctl.h>
|
|
#include "standard-headers/linux/input.h"
|
|
#include "qom/object.h"
|
|
|
|
static bool linux_is_button(unsigned int lnx)
|
|
{
|
|
if (lnx < 0x100) {
|
|
return false;
|
|
}
|
|
if (lnx >= 0x160 && lnx < 0x2c0) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
#define TYPE_INPUT_LINUX "input-linux"
|
|
OBJECT_DECLARE_SIMPLE_TYPE(InputLinux,
|
|
INPUT_LINUX)
|
|
|
|
|
|
struct InputLinux {
|
|
Object parent;
|
|
|
|
char *evdev;
|
|
int fd;
|
|
bool repeat;
|
|
bool grab_request;
|
|
bool grab_active;
|
|
bool grab_all;
|
|
bool keydown[KEY_CNT];
|
|
int keycount;
|
|
int wheel;
|
|
bool initialized;
|
|
|
|
bool has_rel_x;
|
|
bool has_abs_x;
|
|
int num_keys;
|
|
int num_btns;
|
|
int abs_x_min;
|
|
int abs_x_max;
|
|
int abs_y_min;
|
|
int abs_y_max;
|
|
struct input_event event;
|
|
int read_offset;
|
|
|
|
enum GrabToggleKeys grab_toggle;
|
|
|
|
QTAILQ_ENTRY(InputLinux) next;
|
|
};
|
|
|
|
|
|
static QTAILQ_HEAD(, InputLinux) inputs = QTAILQ_HEAD_INITIALIZER(inputs);
|
|
|
|
static void input_linux_toggle_grab(InputLinux *il)
|
|
{
|
|
intptr_t request = !il->grab_active;
|
|
InputLinux *item;
|
|
int rc;
|
|
|
|
rc = ioctl(il->fd, EVIOCGRAB, request);
|
|
if (rc < 0) {
|
|
return;
|
|
}
|
|
il->grab_active = !il->grab_active;
|
|
|
|
if (!il->grab_all) {
|
|
return;
|
|
}
|
|
QTAILQ_FOREACH(item, &inputs, next) {
|
|
if (item == il || item->grab_all) {
|
|
/* avoid endless loops */
|
|
continue;
|
|
}
|
|
if (item->grab_active != il->grab_active) {
|
|
input_linux_toggle_grab(item);
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool input_linux_check_toggle(InputLinux *il)
|
|
{
|
|
switch (il->grab_toggle) {
|
|
case GRAB_TOGGLE_KEYS_CTRL_CTRL:
|
|
return il->keydown[KEY_LEFTCTRL] &&
|
|
il->keydown[KEY_RIGHTCTRL];
|
|
|
|
case GRAB_TOGGLE_KEYS_ALT_ALT:
|
|
return il->keydown[KEY_LEFTALT] &&
|
|
il->keydown[KEY_RIGHTALT];
|
|
|
|
case GRAB_TOGGLE_KEYS_SHIFT_SHIFT:
|
|
return il->keydown[KEY_LEFTSHIFT] &&
|
|
il->keydown[KEY_RIGHTSHIFT];
|
|
|
|
case GRAB_TOGGLE_KEYS_META_META:
|
|
return il->keydown[KEY_LEFTMETA] &&
|
|
il->keydown[KEY_RIGHTMETA];
|
|
|
|
case GRAB_TOGGLE_KEYS_SCROLLLOCK:
|
|
return il->keydown[KEY_SCROLLLOCK];
|
|
|
|
case GRAB_TOGGLE_KEYS_CTRL_SCROLLLOCK:
|
|
return (il->keydown[KEY_LEFTCTRL] ||
|
|
il->keydown[KEY_RIGHTCTRL]) &&
|
|
il->keydown[KEY_SCROLLLOCK];
|
|
|
|
case GRAB_TOGGLE_KEYS__MAX:
|
|
/* avoid gcc error */
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static bool input_linux_should_skip(InputLinux *il,
|
|
struct input_event *event)
|
|
{
|
|
return (il->grab_toggle == GRAB_TOGGLE_KEYS_SCROLLLOCK ||
|
|
il->grab_toggle == GRAB_TOGGLE_KEYS_CTRL_SCROLLLOCK) &&
|
|
event->code == KEY_SCROLLLOCK;
|
|
}
|
|
|
|
static void input_linux_handle_keyboard(InputLinux *il,
|
|
struct input_event *event)
|
|
{
|
|
if (event->type == EV_KEY) {
|
|
if (event->value > 2 || (event->value > 1 && !il->repeat)) {
|
|
/*
|
|
* ignore autorepeat + unknown key events
|
|
* 0 == up, 1 == down, 2 == autorepeat, other == undefined
|
|
*/
|
|
return;
|
|
}
|
|
if (event->code >= KEY_CNT) {
|
|
/*
|
|
* Should not happen. But better safe than sorry,
|
|
* and we make Coverity happy too.
|
|
*/
|
|
return;
|
|
}
|
|
|
|
/* keep track of key state */
|
|
if (!il->keydown[event->code] && event->value) {
|
|
il->keydown[event->code] = true;
|
|
il->keycount++;
|
|
}
|
|
if (il->keydown[event->code] && !event->value) {
|
|
il->keydown[event->code] = false;
|
|
il->keycount--;
|
|
}
|
|
|
|
/* send event to guest when grab is active */
|
|
if (il->grab_active && !input_linux_should_skip(il, event)) {
|
|
int qcode = qemu_input_linux_to_qcode(event->code);
|
|
qemu_input_event_send_key_qcode(NULL, qcode, event->value);
|
|
}
|
|
|
|
/* hotkey -> record switch request ... */
|
|
if (input_linux_check_toggle(il)) {
|
|
il->grab_request = true;
|
|
}
|
|
|
|
/*
|
|
* ... and do the switch when all keys are lifted, so we
|
|
* confuse neither guest nor host with keys which seem to
|
|
* be stuck due to missing key-up events.
|
|
*/
|
|
if (il->grab_request && !il->keycount) {
|
|
il->grab_request = false;
|
|
input_linux_toggle_grab(il);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void input_linux_event_mouse_button(int button)
|
|
{
|
|
qemu_input_queue_btn(NULL, button, true);
|
|
qemu_input_event_sync();
|
|
qemu_input_queue_btn(NULL, button, false);
|
|
qemu_input_event_sync();
|
|
}
|
|
|
|
static void input_linux_handle_mouse(InputLinux *il, struct input_event *event)
|
|
{
|
|
if (!il->grab_active) {
|
|
return;
|
|
}
|
|
|
|
switch (event->type) {
|
|
case EV_KEY:
|
|
switch (event->code) {
|
|
case BTN_LEFT:
|
|
qemu_input_queue_btn(NULL, INPUT_BUTTON_LEFT, event->value);
|
|
break;
|
|
case BTN_RIGHT:
|
|
qemu_input_queue_btn(NULL, INPUT_BUTTON_RIGHT, event->value);
|
|
break;
|
|
case BTN_MIDDLE:
|
|
qemu_input_queue_btn(NULL, INPUT_BUTTON_MIDDLE, event->value);
|
|
break;
|
|
case BTN_GEAR_UP:
|
|
qemu_input_queue_btn(NULL, INPUT_BUTTON_WHEEL_UP, event->value);
|
|
break;
|
|
case BTN_GEAR_DOWN:
|
|
qemu_input_queue_btn(NULL, INPUT_BUTTON_WHEEL_DOWN,
|
|
event->value);
|
|
break;
|
|
case BTN_SIDE:
|
|
qemu_input_queue_btn(NULL, INPUT_BUTTON_SIDE, event->value);
|
|
break;
|
|
case BTN_EXTRA:
|
|
qemu_input_queue_btn(NULL, INPUT_BUTTON_EXTRA, event->value);
|
|
break;
|
|
};
|
|
break;
|
|
case EV_REL:
|
|
switch (event->code) {
|
|
case REL_X:
|
|
qemu_input_queue_rel(NULL, INPUT_AXIS_X, event->value);
|
|
break;
|
|
case REL_Y:
|
|
qemu_input_queue_rel(NULL, INPUT_AXIS_Y, event->value);
|
|
break;
|
|
case REL_WHEEL:
|
|
il->wheel = event->value;
|
|
break;
|
|
}
|
|
break;
|
|
case EV_ABS:
|
|
switch (event->code) {
|
|
case ABS_X:
|
|
qemu_input_queue_abs(NULL, INPUT_AXIS_X, event->value,
|
|
il->abs_x_min, il->abs_x_max);
|
|
break;
|
|
case ABS_Y:
|
|
qemu_input_queue_abs(NULL, INPUT_AXIS_Y, event->value,
|
|
il->abs_y_min, il->abs_y_max);
|
|
break;
|
|
}
|
|
break;
|
|
case EV_SYN:
|
|
qemu_input_event_sync();
|
|
if (il->wheel != 0) {
|
|
input_linux_event_mouse_button((il->wheel > 0)
|
|
? INPUT_BUTTON_WHEEL_UP
|
|
: INPUT_BUTTON_WHEEL_DOWN);
|
|
il->wheel = 0;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void input_linux_event(void *opaque)
|
|
{
|
|
InputLinux *il = opaque;
|
|
int rc;
|
|
int read_size;
|
|
uint8_t *p = (uint8_t *)&il->event;
|
|
|
|
for (;;) {
|
|
read_size = sizeof(il->event) - il->read_offset;
|
|
rc = read(il->fd, &p[il->read_offset], read_size);
|
|
if (rc != read_size) {
|
|
if (rc < 0 && errno != EAGAIN) {
|
|
fprintf(stderr, "%s: read: %s\n", __func__, strerror(errno));
|
|
qemu_set_fd_handler(il->fd, NULL, NULL, NULL);
|
|
close(il->fd);
|
|
} else if (rc > 0) {
|
|
il->read_offset += rc;
|
|
}
|
|
break;
|
|
}
|
|
il->read_offset = 0;
|
|
|
|
if (il->num_keys) {
|
|
input_linux_handle_keyboard(il, &il->event);
|
|
}
|
|
if ((il->has_rel_x || il->has_abs_x) && il->num_btns) {
|
|
input_linux_handle_mouse(il, &il->event);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void input_linux_complete(UserCreatable *uc, Error **errp)
|
|
{
|
|
InputLinux *il = INPUT_LINUX(uc);
|
|
uint8_t evtmap, relmap, absmap;
|
|
uint8_t keymap[KEY_CNT / 8], keystate[KEY_CNT / 8];
|
|
unsigned int i;
|
|
int rc, ver;
|
|
struct input_absinfo absinfo;
|
|
|
|
if (!il->evdev) {
|
|
error_setg(errp, "no input device specified");
|
|
return;
|
|
}
|
|
|
|
il->fd = open(il->evdev, O_RDWR);
|
|
if (il->fd < 0) {
|
|
error_setg_file_open(errp, errno, il->evdev);
|
|
return;
|
|
}
|
|
if (!g_unix_set_fd_nonblocking(il->fd, true, NULL)) {
|
|
error_setg_errno(errp, errno, "Failed to set FD nonblocking");
|
|
return;
|
|
}
|
|
|
|
rc = ioctl(il->fd, EVIOCGVERSION, &ver);
|
|
if (rc < 0) {
|
|
error_setg(errp, "%s: is not an evdev device", il->evdev);
|
|
goto err_close;
|
|
}
|
|
|
|
rc = ioctl(il->fd, EVIOCGBIT(0, sizeof(evtmap)), &evtmap);
|
|
if (rc < 0) {
|
|
goto err_read_event_bits;
|
|
}
|
|
|
|
if (evtmap & (1 << EV_REL)) {
|
|
relmap = 0;
|
|
rc = ioctl(il->fd, EVIOCGBIT(EV_REL, sizeof(relmap)), &relmap);
|
|
if (rc < 0) {
|
|
goto err_read_event_bits;
|
|
}
|
|
if (relmap & (1 << REL_X)) {
|
|
il->has_rel_x = true;
|
|
}
|
|
}
|
|
|
|
if (evtmap & (1 << EV_ABS)) {
|
|
absmap = 0;
|
|
rc = ioctl(il->fd, EVIOCGBIT(EV_ABS, sizeof(absmap)), &absmap);
|
|
if (rc < 0) {
|
|
goto err_read_event_bits;
|
|
}
|
|
if (absmap & (1 << ABS_X)) {
|
|
il->has_abs_x = true;
|
|
rc = ioctl(il->fd, EVIOCGABS(ABS_X), &absinfo);
|
|
if (rc < 0) {
|
|
error_setg(errp, "%s: failed to get get absolute X value",
|
|
il->evdev);
|
|
goto err_close;
|
|
}
|
|
il->abs_x_min = absinfo.minimum;
|
|
il->abs_x_max = absinfo.maximum;
|
|
rc = ioctl(il->fd, EVIOCGABS(ABS_Y), &absinfo);
|
|
if (rc < 0) {
|
|
error_setg(errp, "%s: failed to get get absolute Y value",
|
|
il->evdev);
|
|
goto err_close;
|
|
}
|
|
il->abs_y_min = absinfo.minimum;
|
|
il->abs_y_max = absinfo.maximum;
|
|
}
|
|
}
|
|
|
|
if (evtmap & (1 << EV_KEY)) {
|
|
memset(keymap, 0, sizeof(keymap));
|
|
rc = ioctl(il->fd, EVIOCGBIT(EV_KEY, sizeof(keymap)), keymap);
|
|
if (rc < 0) {
|
|
goto err_read_event_bits;
|
|
}
|
|
rc = ioctl(il->fd, EVIOCGKEY(sizeof(keystate)), keystate);
|
|
if (rc < 0) {
|
|
error_setg(errp, "%s: failed to get global key state", il->evdev);
|
|
goto err_close;
|
|
}
|
|
for (i = 0; i < KEY_CNT; i++) {
|
|
if (keymap[i / 8] & (1 << (i % 8))) {
|
|
if (linux_is_button(i)) {
|
|
il->num_btns++;
|
|
} else {
|
|
il->num_keys++;
|
|
}
|
|
if (keystate[i / 8] & (1 << (i % 8))) {
|
|
il->keydown[i] = true;
|
|
il->keycount++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
qemu_set_fd_handler(il->fd, input_linux_event, NULL, il);
|
|
if (il->keycount) {
|
|
/* delay grab until all keys are released */
|
|
il->grab_request = true;
|
|
} else {
|
|
input_linux_toggle_grab(il);
|
|
}
|
|
QTAILQ_INSERT_TAIL(&inputs, il, next);
|
|
il->initialized = true;
|
|
return;
|
|
|
|
err_read_event_bits:
|
|
error_setg(errp, "%s: failed to read event bits", il->evdev);
|
|
|
|
err_close:
|
|
close(il->fd);
|
|
return;
|
|
}
|
|
|
|
static void input_linux_instance_finalize(Object *obj)
|
|
{
|
|
InputLinux *il = INPUT_LINUX(obj);
|
|
|
|
if (il->initialized) {
|
|
QTAILQ_REMOVE(&inputs, il, next);
|
|
qemu_set_fd_handler(il->fd, NULL, NULL, NULL);
|
|
close(il->fd);
|
|
}
|
|
g_free(il->evdev);
|
|
}
|
|
|
|
static char *input_linux_get_evdev(Object *obj, Error **errp)
|
|
{
|
|
InputLinux *il = INPUT_LINUX(obj);
|
|
|
|
return g_strdup(il->evdev);
|
|
}
|
|
|
|
static void input_linux_set_evdev(Object *obj, const char *value,
|
|
Error **errp)
|
|
{
|
|
InputLinux *il = INPUT_LINUX(obj);
|
|
|
|
if (il->evdev) {
|
|
error_setg(errp, "evdev property already set");
|
|
return;
|
|
}
|
|
il->evdev = g_strdup(value);
|
|
}
|
|
|
|
static bool input_linux_get_grab_all(Object *obj, Error **errp)
|
|
{
|
|
InputLinux *il = INPUT_LINUX(obj);
|
|
|
|
return il->grab_all;
|
|
}
|
|
|
|
static void input_linux_set_grab_all(Object *obj, bool value,
|
|
Error **errp)
|
|
{
|
|
InputLinux *il = INPUT_LINUX(obj);
|
|
|
|
il->grab_all = value;
|
|
}
|
|
|
|
static bool input_linux_get_repeat(Object *obj, Error **errp)
|
|
{
|
|
InputLinux *il = INPUT_LINUX(obj);
|
|
|
|
return il->repeat;
|
|
}
|
|
|
|
static void input_linux_set_repeat(Object *obj, bool value,
|
|
Error **errp)
|
|
{
|
|
InputLinux *il = INPUT_LINUX(obj);
|
|
|
|
il->repeat = value;
|
|
}
|
|
|
|
static int input_linux_get_grab_toggle(Object *obj, Error **errp)
|
|
{
|
|
InputLinux *il = INPUT_LINUX(obj);
|
|
|
|
return il->grab_toggle;
|
|
}
|
|
|
|
static void input_linux_set_grab_toggle(Object *obj, int value,
|
|
Error **errp)
|
|
{
|
|
InputLinux *il = INPUT_LINUX(obj);
|
|
|
|
il->grab_toggle = value;
|
|
}
|
|
|
|
static void input_linux_instance_init(Object *obj)
|
|
{
|
|
}
|
|
|
|
static void input_linux_class_init(ObjectClass *oc, void *data)
|
|
{
|
|
UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
|
|
|
|
ucc->complete = input_linux_complete;
|
|
|
|
object_class_property_add_str(oc, "evdev",
|
|
input_linux_get_evdev,
|
|
input_linux_set_evdev);
|
|
object_class_property_add_bool(oc, "grab_all",
|
|
input_linux_get_grab_all,
|
|
input_linux_set_grab_all);
|
|
object_class_property_add_bool(oc, "repeat",
|
|
input_linux_get_repeat,
|
|
input_linux_set_repeat);
|
|
object_class_property_add_enum(oc, "grab-toggle", "GrabToggleKeys",
|
|
&GrabToggleKeys_lookup,
|
|
input_linux_get_grab_toggle,
|
|
input_linux_set_grab_toggle);
|
|
}
|
|
|
|
static const TypeInfo input_linux_info = {
|
|
.name = TYPE_INPUT_LINUX,
|
|
.parent = TYPE_OBJECT,
|
|
.class_init = input_linux_class_init,
|
|
.instance_size = sizeof(InputLinux),
|
|
.instance_init = input_linux_instance_init,
|
|
.instance_finalize = input_linux_instance_finalize,
|
|
.interfaces = (InterfaceInfo[]) {
|
|
{ TYPE_USER_CREATABLE },
|
|
{ }
|
|
}
|
|
};
|
|
|
|
static void register_types(void)
|
|
{
|
|
type_register_static(&input_linux_info);
|
|
}
|
|
|
|
type_init(register_types);
|