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[PULL,04/15] mc146818rtc: add "rtc-time" link to "/machine/rtc"

Message ID 1404203705-15674-5-git-send-email-pbonzini@redhat.com
State New
Headers show

Commit Message

Paolo Bonzini July 1, 2014, 8:34 a.m. UTC 
From: Marcelo Tosatti <mtosatti@redhat.com>

Add a link to rtc under /machine providing a stable
location for management apps to query the value of the
time.  The link should be added by any object that sends
RTC_TIME_CHANGE events.

{"execute":"qom-get","arguments":{"path":"/machine","property":"rtc-time"} }

Suggested by Paolo Bonzini and Andreas Faerber.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/timer/mc146818rtc.c | 9 +++++++++
 1 file changed, 9 insertions(+)
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Patch

diff --git a/hw/timer/mc146818rtc.c b/hw/timer/mc146818rtc.c
index 307732c..9d817ca 100644
--- a/hw/timer/mc146818rtc.c
+++ b/hw/timer/mc146818rtc.c
@@ -909,6 +909,9 @@  static void rtc_realizefn(DeviceState *dev, Error **errp)
 
     object_property_add(OBJECT(s), "date", "struct tm",
                         rtc_get_date, NULL, NULL, s, NULL);
+
+    object_property_add_alias(qdev_get_machine(), "rtc-time",
+                              OBJECT(s), "date", NULL);
 }
 
 ISADevice *rtc_init(ISABus *bus, int base_year, qemu_irq intercept_irq)
@@ -950,11 +953,17 @@  static void rtc_class_initfn(ObjectClass *klass, void *data)
     dc->cannot_instantiate_with_device_add_yet = true;
 }
 
+static void rtc_finalize(Object *obj)
+{
+    object_property_del(qdev_get_machine(), "rtc", NULL);
+}
+
 static const TypeInfo mc146818rtc_info = {
     .name          = TYPE_MC146818_RTC,
     .parent        = TYPE_ISA_DEVICE,
     .instance_size = sizeof(RTCState),
     .class_init    = rtc_class_initfn,
+    .instance_finalize = rtc_finalize,
 };
 
 static void mc146818rtc_register_types(void)