[Qemu-devel] [PATCH 2/2] Added monitor commands: 'keyboard_set' and 'info keybaord'

[Shahar Havivi <shaharh@redhat.com>]

Two new monitor commands: adding ability to handle which keyboard qemu will
use and to see which keyboard are currently available.

$ info keyboard
$ keyboard_set <index>

Signed-off-by: Shahar Havivi <shaharh@redhat.com>
---
 console.h       |    4 ++
 input.c         |  104 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 monitor.c       |    8 ++++
 qemu-monitor.hx |   17 +++++++++
 qerror.c        |    8 ++++
 5 files changed, 141 insertions(+), 0 deletions(-)

diff --git a/console.h b/console.h
index 16c9c3d..7efa88e 100644
--- a/console.h
+++ b/console.h
@@ -85,6 +85,10 @@ void do_info_mice_print(Monitor *mon, const QObject *data);
 void do_info_mice(Monitor *mon, QObject **ret_data);
 void do_mouse_set(Monitor *mon, const QDict *qdict);
 
+void do_info_keyboard_print(Monitor *mon, const QObject *data);
+void do_info_keyboard(Monitor *mon, QObject **ret_data);
+int do_keyboard_set(Monitor *mon, const QDict *qdict, QObject **ret_data);
+
 /* keysym is a unicode code except for special keys (see QEMU_KEY_xxx
    constants) */
 #define QEMU_KEY_ESC1(c) ((c) | 0xe100)
diff --git a/input.c b/input.c
index 563ecad..4daaeb0 100644
--- a/input.c
+++ b/input.c
@@ -368,3 +368,107 @@ void qemu_remove_mouse_mode_change_notifier(Notifier *notify)
 {
     notifier_list_remove(&mouse_mode_notifiers, notify);
 }
+
+static void info_keyboard_iter(QObject *data, void *opaque)
+{
+    QDict *kbd;
+    Monitor *mon = opaque;
+
+    kbd = qobject_to_qdict(data);
+    monitor_printf(mon, "%c Keyboard #%" PRId64 ": %s\n",
+                  (qdict_get_bool(kbd, "current") ? '*' : ' '),
+                  qdict_get_int(kbd, "index"), qdict_get_str(kbd, "name"));
+}
+
+void do_info_keyboard_print(Monitor *mon, const QObject *data)
+{
+    QList *kbd_list;
+
+    kbd_list = qobject_to_qlist(data);
+    if (qlist_empty(kbd_list)) {
+        monitor_printf(mon, "No keyboard devices connected\n");
+        return;
+    }
+
+    qlist_iter(kbd_list, info_keyboard_iter, mon);
+}
+
+/*
+ * do_info_keyboard(): Show VM keyboard information
+ *
+ * Each keyboard is represented by a QDict, the returned QObject is
+ * a QList of all keyboards.
+ *
+ * The keyboard QDict contains the following:
+ *
+ * - "name": keyboard's name
+ * - "index": keyboard's index
+ * - "current": true if this keyboard is receiving events, false otherwise
+ *
+ * Example:
+ *
+ * [ { "name": "QEMU USB Keyboard", "index": 0, "current": false },
+ *   { "name": "QEMU PS/2 Keyboard", "index": 1, "current": true } ]
+ */
+void do_info_keyboard(Monitor *mon, QObject **ret_data)
+{
+    QEMUPutKbdEntry *cursor;
+    QList *kbd_list;
+    int index = 0;
+
+    kbd_list = qlist_new();
+
+    if (!qemu_put_kbd_event_head) {
+        goto out;
+    }
+
+    cursor = qemu_put_kbd_event_head;
+    while (cursor != NULL) {
+        QObject *obj;
+        obj = qobject_from_jsonf("{ 'name': %s, 'index': %d, 'current': %i }",
+                                 cursor->qemu_put_kbd_name,
+                                 index, cursor == qemu_put_kbd_event_current);
+        qlist_append_obj(kbd_list, obj);
+        index++;
+        cursor = cursor->next;
+    }
+out:
+    *ret_data = QOBJECT(kbd_list);
+}
+
+/*
+ * do_keyboard_set(): Set active keyboard
+ *
+ * Argument qdict contains
+ * - "index": the keyboard index to set
+ *
+ * Example:
+ *
+ * { "index": "0" }
+ */
+int do_keyboard_set(Monitor *mon, const QDict *qdict, QObject **ret_data)
+{
+    QEMUPutKbdEntry *cursor;
+    int i = 0;
+    int index = qdict_get_int(qdict, "index");
+
+    if (!qemu_put_kbd_event_head) {
+        qerror_report(QERR_DEVICE_NOT_FOUND, "keyboard");
+        return -1;
+    }
+
+    cursor = qemu_put_kbd_event_head;
+    while (cursor != NULL && index != i) {
+        i++;
+        cursor = cursor->next;
+    }
+
+    if (cursor != NULL) {
+        qemu_put_kbd_event_current = cursor;
+    }
+    else {
+        qerror_report(QERR_INVALID_PARAMETER, "index");
+        return -1;
+    }
+    return 0;
+}
diff --git a/monitor.c b/monitor.c
index 0448a70..cc95b3d 100644
--- a/monitor.c
+++ b/monitor.c
@@ -2783,6 +2783,14 @@ static const mon_cmd_t info_cmds[] = {
         .mhandler.info_new = do_info_mice,
     },
     {
+        .name       = "keyboard",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show which guest keyboard is receiving events",
+        .user_print = do_info_keyboard_print,
+        .mhandler.info_new = do_info_keyboard,
+    },
+    {
         .name       = "vnc",
         .args_type  = "",
         .params     = "",
diff --git a/qemu-monitor.hx b/qemu-monitor.hx
index 5308f36..e9beb12 100644
--- a/qemu-monitor.hx
+++ b/qemu-monitor.hx
@@ -659,6 +659,23 @@ info mice
 @end example
 ETEXI
 
+    {
+        .name       = "keyboard_set",
+        .args_type  = "index:i",
+        .params     = "index",
+        .help       = "set which keyboard device receives events",
+        .mhandler.cmd_new = do_keyboard_set,
+    },
+
+STEXI
+@item keyboard_set @var{index}
+@findex keyboard_set
+Set which keyboard device receives events at given @var{index}, index
+can be obtained with
+@example
+info keyboard
+@end example
+ETEXI
 #ifdef HAS_AUDIO
     {
         .name       = "wavcapture",
diff --git a/qerror.c b/qerror.c
index d0aba61..42a5cf7 100644
--- a/qerror.c
+++ b/qerror.c
@@ -172,6 +172,14 @@ static const QErrorStringTable qerror_table[] = {
         .error_fmt = QERR_VNC_SERVER_FAILED,
         .desc      = "Could not start VNC server on %(target)",
     },
+    {
+        .error_fmt = QERR_DEVICE_NOT_FOUND,
+        .desc      = "No keyboard device found",
+    },
+    {
+        .error_fmt = QERR_INVALID_PARAMETER,
+        .desc      = "Invalid index '%(name)' for keyboard device",
+    },
     {}
 };
 
-- 
1.6.3.3