--- /dev/null
+/*
+ * 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-common.h"
+#include "qemu/config-file.h"
+#include "qemu/sockets.h"
+#include "sysemu/sysemu.h"
+#include "ui/input.h"
+#include "qom/object_interfaces.h"
+
+#include <sys/ioctl.h>
+#include "standard-headers/linux/input.h"
+
+static int linux_to_qcode[KEY_CNT] = {
+ [KEY_ESC] = Q_KEY_CODE_ESC,
+ [KEY_1] = Q_KEY_CODE_1,
+ [KEY_2] = Q_KEY_CODE_2,
+ [KEY_3] = Q_KEY_CODE_3,
+ [KEY_4] = Q_KEY_CODE_4,
+ [KEY_5] = Q_KEY_CODE_5,
+ [KEY_6] = Q_KEY_CODE_6,
+ [KEY_7] = Q_KEY_CODE_7,
+ [KEY_8] = Q_KEY_CODE_8,
+ [KEY_9] = Q_KEY_CODE_9,
+ [KEY_0] = Q_KEY_CODE_0,
+ [KEY_MINUS] = Q_KEY_CODE_MINUS,
+ [KEY_EQUAL] = Q_KEY_CODE_EQUAL,
+ [KEY_BACKSPACE] = Q_KEY_CODE_BACKSPACE,
+ [KEY_TAB] = Q_KEY_CODE_TAB,
+ [KEY_Q] = Q_KEY_CODE_Q,
+ [KEY_W] = Q_KEY_CODE_W,
+ [KEY_E] = Q_KEY_CODE_E,
+ [KEY_R] = Q_KEY_CODE_R,
+ [KEY_T] = Q_KEY_CODE_T,
+ [KEY_Y] = Q_KEY_CODE_Y,
+ [KEY_U] = Q_KEY_CODE_U,
+ [KEY_I] = Q_KEY_CODE_I,
+ [KEY_O] = Q_KEY_CODE_O,
+ [KEY_P] = Q_KEY_CODE_P,
+ [KEY_LEFTBRACE] = Q_KEY_CODE_BRACKET_LEFT,
+ [KEY_RIGHTBRACE] = Q_KEY_CODE_BRACKET_RIGHT,
+ [KEY_ENTER] = Q_KEY_CODE_RET,
+ [KEY_LEFTCTRL] = Q_KEY_CODE_CTRL,
+ [KEY_A] = Q_KEY_CODE_A,
+ [KEY_S] = Q_KEY_CODE_S,
+ [KEY_D] = Q_KEY_CODE_D,
+ [KEY_F] = Q_KEY_CODE_F,
+ [KEY_G] = Q_KEY_CODE_G,
+ [KEY_H] = Q_KEY_CODE_H,
+ [KEY_J] = Q_KEY_CODE_J,
+ [KEY_K] = Q_KEY_CODE_K,
+ [KEY_L] = Q_KEY_CODE_L,
+ [KEY_SEMICOLON] = Q_KEY_CODE_SEMICOLON,
+ [KEY_APOSTROPHE] = Q_KEY_CODE_APOSTROPHE,
+ [KEY_GRAVE] = Q_KEY_CODE_GRAVE_ACCENT,
+ [KEY_LEFTSHIFT] = Q_KEY_CODE_SHIFT,
+ [KEY_BACKSLASH] = Q_KEY_CODE_BACKSLASH,
+ [KEY_102ND] = Q_KEY_CODE_LESS,
+ [KEY_Z] = Q_KEY_CODE_Z,
+ [KEY_X] = Q_KEY_CODE_X,
+ [KEY_C] = Q_KEY_CODE_C,
+ [KEY_V] = Q_KEY_CODE_V,
+ [KEY_B] = Q_KEY_CODE_B,
+ [KEY_N] = Q_KEY_CODE_N,
+ [KEY_M] = Q_KEY_CODE_M,
+ [KEY_COMMA] = Q_KEY_CODE_COMMA,
+ [KEY_DOT] = Q_KEY_CODE_DOT,
+ [KEY_SLASH] = Q_KEY_CODE_SLASH,
+ [KEY_RIGHTSHIFT] = Q_KEY_CODE_SHIFT_R,
+ [KEY_LEFTALT] = Q_KEY_CODE_ALT,
+ [KEY_SPACE] = Q_KEY_CODE_SPC,
+ [KEY_CAPSLOCK] = Q_KEY_CODE_CAPS_LOCK,
+ [KEY_F1] = Q_KEY_CODE_F1,
+ [KEY_F2] = Q_KEY_CODE_F2,
+ [KEY_F3] = Q_KEY_CODE_F3,
+ [KEY_F4] = Q_KEY_CODE_F4,
+ [KEY_F5] = Q_KEY_CODE_F5,
+ [KEY_F6] = Q_KEY_CODE_F6,
+ [KEY_F7] = Q_KEY_CODE_F7,
+ [KEY_F8] = Q_KEY_CODE_F8,
+ [KEY_F9] = Q_KEY_CODE_F9,
+ [KEY_F10] = Q_KEY_CODE_F10,
+ [KEY_NUMLOCK] = Q_KEY_CODE_NUM_LOCK,
+ [KEY_SCROLLLOCK] = Q_KEY_CODE_SCROLL_LOCK,
+ [KEY_KP0] = Q_KEY_CODE_KP_0,
+ [KEY_KP1] = Q_KEY_CODE_KP_1,
+ [KEY_KP2] = Q_KEY_CODE_KP_2,
+ [KEY_KP3] = Q_KEY_CODE_KP_3,
+ [KEY_KP4] = Q_KEY_CODE_KP_4,
+ [KEY_KP5] = Q_KEY_CODE_KP_5,
+ [KEY_KP6] = Q_KEY_CODE_KP_6,
+ [KEY_KP7] = Q_KEY_CODE_KP_7,
+ [KEY_KP8] = Q_KEY_CODE_KP_8,
+ [KEY_KP9] = Q_KEY_CODE_KP_9,
+ [KEY_KPMINUS] = Q_KEY_CODE_KP_SUBTRACT,
+ [KEY_KPPLUS] = Q_KEY_CODE_KP_ADD,
+ [KEY_KPDOT] = Q_KEY_CODE_KP_DECIMAL,
+ [KEY_KPENTER] = Q_KEY_CODE_KP_ENTER,
+ [KEY_KPSLASH] = Q_KEY_CODE_KP_DIVIDE,
+ [KEY_KPASTERISK] = Q_KEY_CODE_KP_MULTIPLY,
+ [KEY_F11] = Q_KEY_CODE_F11,
+ [KEY_F12] = Q_KEY_CODE_F12,
+ [KEY_RIGHTCTRL] = Q_KEY_CODE_CTRL_R,
+ [KEY_SYSRQ] = Q_KEY_CODE_SYSRQ,
+ [KEY_RIGHTALT] = Q_KEY_CODE_ALT_R,
+ [KEY_HOME] = Q_KEY_CODE_HOME,
+ [KEY_UP] = Q_KEY_CODE_UP,
+ [KEY_PAGEUP] = Q_KEY_CODE_PGUP,
+ [KEY_LEFT] = Q_KEY_CODE_LEFT,
+ [KEY_RIGHT] = Q_KEY_CODE_RIGHT,
+ [KEY_END] = Q_KEY_CODE_END,
+ [KEY_DOWN] = Q_KEY_CODE_DOWN,
+ [KEY_PAGEDOWN] = Q_KEY_CODE_PGDN,
+ [KEY_INSERT] = Q_KEY_CODE_INSERT,
+ [KEY_DELETE] = Q_KEY_CODE_DELETE,
+ [KEY_LEFTMETA] = Q_KEY_CODE_META_L,
+ [KEY_RIGHTMETA] = Q_KEY_CODE_META_R,
+ [KEY_MENU] = Q_KEY_CODE_MENU,
+};
+
+static int qemu_input_linux_to_qcode(unsigned int lnx)
+{
+ assert(lnx < KEY_CNT);
+ return linux_to_qcode[lnx];
+}
+
+#define TYPE_INPUT_LINUX "input-linux"
+#define INPUT_LINUX(obj) \
+ OBJECT_CHECK(InputLinux, (obj), TYPE_INPUT_LINUX)
+#define INPUT_LINUX_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(InputLinuxClass, (obj), TYPE_INPUT_LINUX)
+#define INPUT_LINUX_CLASS(klass) \
+ OBJECT_CLASS_CHECK(InputLinuxClass, (klass), TYPE_INPUT_LINUX)
+
+typedef struct InputLinux InputLinux;
+typedef struct InputLinuxClass InputLinuxClass;
+
+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;
+ QTAILQ_ENTRY(InputLinux) next;
+};
+
+struct InputLinuxClass {
+ ObjectClass parent_class;
+};
+
+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 void input_linux_event_keyboard(void *opaque)
+{
+ InputLinux *il = opaque;
+ struct input_event event;
+ int rc;
+
+ for (;;) {
+ rc = read(il->fd, &event, sizeof(event));
+ if (rc != sizeof(event)) {
+ 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);
+ }
+ break;
+ }
+
+ switch (event.type) {
+ case EV_KEY:
+ if (event.value > 2 || (event.value > 1 && !il->repeat)) {
+ /*
+ * ignore autorepeat + unknown key events
+ * 0 == up, 1 == down, 2 == autorepeat, other == undefined
+ */
+ continue;
+ }
+ if (event.code >= KEY_CNT) {
+ /*
+ * Should not happen. But better safe than sorry,
+ * and we make Coverity happy too.
+ */
+ continue;
+ }
+ /* 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) {
+ int qcode = qemu_input_linux_to_qcode(event.code);
+ qemu_input_event_send_key_qcode(NULL, qcode, event.value);
+ }
+
+ /* hotkey -> record switch request ... */
+ if (il->keydown[KEY_LEFTCTRL] &&
+ il->keydown[KEY_RIGHTCTRL]) {
+ 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);
+ }
+ break;
+ }
+ }
+}
+
+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_event_mouse(void *opaque)
+{
+ InputLinux *il = opaque;
+ struct input_event event;
+ int rc;
+
+ for (;;) {
+ rc = read(il->fd, &event, sizeof(event));
+ if (rc != sizeof(event)) {
+ 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);
+ }
+ break;
+ }
+
+ /* only send event to guest when grab is active */
+ if (!il->grab_active) {
+ continue;
+ }
+
+ 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;
+ };
+ 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_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_complete(UserCreatable *uc, Error **errp)
+{
+ InputLinux *il = INPUT_LINUX(uc);
+ uint32_t evtmap, relmap, absmap;
+ int rc, ver;
+
+ 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;
+ }
+ qemu_set_nonblock(il->fd);
+
+ 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) {
+ error_setg(errp, "%s: failed to read event bits", il->evdev);
+ goto err_close;
+ }
+
+ if (evtmap & (1 << EV_REL)) {
+ rc = ioctl(il->fd, EVIOCGBIT(EV_REL, sizeof(relmap)), &relmap);
+ if (rc < 0) {
+ relmap = 0;
+ }
+ }
+
+ if (evtmap & (1 << EV_ABS)) {
+ ioctl(il->fd, EVIOCGBIT(EV_ABS, sizeof(absmap)), &absmap);
+ if (rc < 0) {
+ absmap = 0;
+ }
+ }
+
+ if ((evtmap & (1 << EV_REL)) &&
+ (relmap & (1 << REL_X))) {
+ /* has relative x axis -> assume mouse */
+ qemu_set_fd_handler(il->fd, input_linux_event_mouse, NULL, il);
+ } else if ((evtmap & (1 << EV_ABS)) &&
+ (absmap & (1 << ABS_X))) {
+ /* has absolute x axis -> not supported */
+ error_setg(errp, "tablet/touchscreen not supported");
+ goto err_close;
+ } else if (evtmap & (1 << EV_KEY)) {
+ /* has keys/buttons (and no x axis) -> assume keyboard */
+ qemu_set_fd_handler(il->fd, input_linux_event_keyboard, NULL, il);
+ } else {
+ /* Huh? What is this? */
+ error_setg(errp, "unknown kind of input device");
+ goto err_close;
+ }
+ input_linux_toggle_grab(il);
+ QTAILQ_INSERT_TAIL(&inputs, il, next);
+ il->initialized = true;
+ return;
+
+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);
+ 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 void input_linux_instance_init(Object *obj)
+{
+ object_property_add_str(obj, "evdev",
+ input_linux_get_evdev,
+ input_linux_set_evdev, NULL);
+ object_property_add_bool(obj, "grab_all",
+ input_linux_get_grab_all,
+ input_linux_set_grab_all, NULL);
+ object_property_add_bool(obj, "repeat",
+ input_linux_get_repeat,
+ input_linux_set_repeat, NULL);
+}
+
+static void input_linux_class_init(ObjectClass *oc, void *data)
+{
+ UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
+
+ ucc->complete = input_linux_complete;
+}
+
+static const TypeInfo input_linux_info = {
+ .name = TYPE_INPUT_LINUX,
+ .parent = TYPE_OBJECT,
+ .class_size = sizeof(InputLinuxClass),
+ .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);
Code Review / kvmfornfv.git / blobdiff