| /* |
| * 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 <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]; |
| } |
| |
| typedef struct InputLinux InputLinux; |
| |
| struct InputLinux { |
| const char *evdev; |
| int fd; |
| bool repeat; |
| bool grab_request; |
| bool grab_active; |
| bool grab_all; |
| bool keydown[KEY_CNT]; |
| int keycount; |
| int wheel; |
| 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 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; |
| } |
| /* 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; |
| } |
| } |
| } |
| |
| int input_linux_init(void *opaque, QemuOpts *opts, Error **errp) |
| { |
| InputLinux *il = g_new0(InputLinux, 1); |
| uint32_t evtmap; |
| int rc, ver; |
| |
| il->evdev = qemu_opt_get(opts, "evdev"); |
| il->grab_all = qemu_opt_get_bool(opts, "grab-all", false); |
| il->repeat = qemu_opt_get_bool(opts, "repeat", false); |
| |
| if (!il->evdev) { |
| error_setg(errp, "no input device specified"); |
| goto err_free; |
| } |
| |
| il->fd = open(il->evdev, O_RDWR); |
| if (il->fd < 0) { |
| error_setg_file_open(errp, errno, il->evdev); |
| goto err_free; |
| } |
| 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 (evtmap & (1 << EV_REL)) { |
| /* has relative axis -> assume mouse */ |
| qemu_set_fd_handler(il->fd, input_linux_event_mouse, NULL, il); |
| } else if (evtmap & (1 << EV_ABS)) { |
| /* has absolute axis -> not supported */ |
| error_setg(errp, "tablet/touchscreen not supported"); |
| goto err_close; |
| } else if (evtmap & (1 << EV_KEY)) { |
| /* has keys/buttons (and no 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); |
| return 0; |
| |
| err_close: |
| close(il->fd); |
| err_free: |
| g_free(il); |
| return -1; |
| } |
| |
| static QemuOptsList qemu_input_linux_opts = { |
| .name = "input-linux", |
| .head = QTAILQ_HEAD_INITIALIZER(qemu_input_linux_opts.head), |
| .implied_opt_name = "evdev", |
| .desc = { |
| { |
| .name = "evdev", |
| .type = QEMU_OPT_STRING, |
| },{ |
| .name = "grab-all", |
| .type = QEMU_OPT_BOOL, |
| },{ |
| .name = "repeat", |
| .type = QEMU_OPT_BOOL, |
| }, |
| { /* end of list */ } |
| }, |
| }; |
| |
| static void input_linux_register_config(void) |
| { |
| qemu_add_opts(&qemu_input_linux_opts); |
| } |
| opts_init(input_linux_register_config); |
