]> git.proxmox.com Git - mirror_qemu.git/blobdiff - ui/input-linux.c
Merge tag 'pull-maintainer-may24-160524-2' of https://gitlab.com/stsquad/qemu into...
[mirror_qemu.git] / ui / input-linux.c
index ac31f47719603e390bf48c7038dbd23b2c420335..e572a2e905b9897acb11cf3391f8a86a88726a8e 100644 (file)
 
 #include "qemu/osdep.h"
 #include "qapi/error.h"
-#include "qemu-common.h"
 #include "qemu/config-file.h"
+#include "qemu/main-loop.h"
+#include "qemu/module.h"
 #include "qemu/sockets.h"
-#include "sysemu/sysemu.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"
-
-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];
-}
+#include "qom/object.h"
 
 static bool linux_is_button(unsigned int lnx)
 {
@@ -141,15 +31,9 @@ static bool linux_is_button(unsigned int 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)
+OBJECT_DECLARE_SIMPLE_TYPE(InputLinux,
+                           INPUT_LINUX)
 
-typedef struct InputLinux InputLinux;
-typedef struct InputLinuxClass InputLinuxClass;
 
 struct InputLinux {
     Object parent;
@@ -169,13 +53,18 @@ struct InputLinux {
     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;
 };
 
-struct InputLinuxClass {
-    ObjectClass parent_class;
-};
 
 static QTAILQ_HEAD(, InputLinux) inputs = QTAILQ_HEAD_INITIALIZER(inputs);
 
@@ -205,6 +94,48 @@ static void input_linux_toggle_grab(InputLinux *il)
     }
 }
 
+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)
 {
@@ -235,14 +166,13 @@ static void input_linux_handle_keyboard(InputLinux *il,
         }
 
         /* send event to guest when grab is active */
-        if (il->grab_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 (il->keydown[KEY_LEFTCTRL] &&
-            il->keydown[KEY_RIGHTCTRL]) {
+        if (input_linux_check_toggle(il)) {
             il->grab_request = true;
         }
 
@@ -312,6 +242,18 @@ static void input_linux_handle_mouse(InputLinux *il, struct input_event *event)
             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) {
@@ -327,25 +269,30 @@ static void input_linux_handle_mouse(InputLinux *il, struct input_event *event)
 static void input_linux_event(void *opaque)
 {
     InputLinux *il = opaque;
-    struct input_event event;
     int rc;
+    int read_size;
+    uint8_t *p = (uint8_t *)&il->event;
 
     for (;;) {
-        rc = read(il->fd, &event, sizeof(event));
-        if (rc != sizeof(event)) {
+        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, &event);
+            input_linux_handle_keyboard(il, &il->event);
         }
-        if (il->has_rel_x && il->num_btns) {
-            input_linux_handle_mouse(il, &event);
+        if ((il->has_rel_x || il->has_abs_x) && il->num_btns) {
+            input_linux_handle_mouse(il, &il->event);
         }
     }
 }
@@ -357,6 +304,7 @@ static void input_linux_complete(UserCreatable *uc, Error **errp)
     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");
@@ -368,7 +316,10 @@ static void input_linux_complete(UserCreatable *uc, Error **errp)
         error_setg_file_open(errp, errno, il->evdev);
         return;
     }
-    qemu_set_nonblock(il->fd);
+    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) {
@@ -378,13 +329,15 @@ static void input_linux_complete(UserCreatable *uc, Error **errp)
 
     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;
+        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;
         }
@@ -393,15 +346,41 @@ static void input_linux_complete(UserCreatable *uc, Error **errp)
     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)) {
@@ -428,6 +407,9 @@ static void input_linux_complete(UserCreatable *uc, Error **errp)
     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;
@@ -439,6 +421,7 @@ static void input_linux_instance_finalize(Object *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);
@@ -493,17 +476,23 @@ static void input_linux_set_repeat(Object *obj, bool value,
     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)
 {
-    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)
@@ -511,12 +500,25 @@ 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_size = sizeof(InputLinuxClass),
     .class_init = input_linux_class_init,
     .instance_size = sizeof(InputLinux),
     .instance_init = input_linux_instance_init,