@@ -508,13 +508,25 @@
# @grab-toggle: the key or key combination that toggles device grab
# (default: ctrl-ctrl)
#
+# @grab-on-startup: if true, grab the device immediately upon starting
+# the guest. Otherwise, don't grab the device until the
+# combination is entered. This does not influence other devices
+# even if grab_all is true, i.e. in the unlikely scenario where
+# device1 has grab_all=true + grab-on-startup=true and device2 has
+# grab-on-startup=false, only device1 is grabbed on startup, then,
+# once the grab combination is entered, grabbing is toggled off
+# for both devices (because device1 enforces the grab_all
+# property) until the combination is entered again at which point
+# both devices will be grabbed. (default: true) (since 9.1).
+#
# Since: 2.6
##
{ 'struct': 'InputLinuxProperties',
'data': { 'evdev': 'str',
'*grab_all': 'bool',
'*repeat': 'bool',
- '*grab-toggle': 'GrabToggleKeys' } }
+ '*grab-toggle': 'GrabToggleKeys',
+ '*grab-on-startup': 'bool'} }
##
# @EventLoopBaseProperties:
@@ -44,6 +44,7 @@ struct InputLinux {
bool grab_request;
bool grab_active;
bool grab_all;
+ bool grab_on_startup;
bool keydown[KEY_CNT];
int keycount;
int wheel;
@@ -400,7 +401,7 @@ static void input_linux_complete(UserCreatable *uc, Error **errp)
if (il->keycount) {
/* delay grab until all keys are released */
il->grab_request = true;
- } else {
+ } else if (il->grab_on_startup) {
input_linux_toggle_grab(il);
}
QTAILQ_INSERT_TAIL(&inputs, il, next);
@@ -491,6 +492,19 @@ static void input_linux_set_grab_toggle(Object *obj, int value,
il->grab_toggle = value;
}
+static bool input_linux_get_grab_on_startup(Object *obj, Error **errp)
+{
+ InputLinux *il = INPUT_LINUX(obj);
+ return il->grab_on_startup;
+}
+
+static void input_linux_set_grab_on_startup(Object *obj, bool value,
+ Error **errp)
+{
+ InputLinux *il = INPUT_LINUX(obj);
+ il->grab_on_startup = value;
+}
+
static void input_linux_instance_init(Object *obj)
{
}
@@ -498,6 +512,7 @@ static void input_linux_instance_init(Object *obj)
static void input_linux_class_init(ObjectClass *oc, void *data)
{
UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
+ ObjectProperty *grab_on_startup_prop;
ucc->complete = input_linux_complete;
@@ -514,6 +529,9 @@ static void input_linux_class_init(ObjectClass *oc, void *data)
&GrabToggleKeys_lookup,
input_linux_get_grab_toggle,
input_linux_set_grab_toggle);
+ grab_on_startup_prop = object_class_property_add_bool(oc, "grab-on-startup",
+ input_linux_get_grab_on_startup, input_linux_set_grab_on_startup);
+ object_property_set_default_bool(grab_on_startup_prop, true);
}
static const TypeInfo input_linux_info = {
Depending on your use-case, it might be inconvenient to have qemu grab the input device from the host immediately upon starting the guest. Added a new bool option to input-linux: grab-on-startup. If true, the device is grabbed as soon as the guest is started, otherwise it is not grabbed until the toggle combination is entered. To avoid breaking existing setups, the default value of grab-on-startup is true, i.e. same behaviour as before this change. Signed-off-by: Justinien Bouron <justinien.bouron@gmail.com> --- Changes since v2: - Added missing (since 9.1) to the new option in qapi/qom.json qapi/qom.json | 14 +++++++++++++- ui/input-linux.c | 20 +++++++++++++++++++- 2 files changed, 32 insertions(+), 2 deletions(-)