Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

Block pull request

# gpg: Signature made Tue 01 Jul 2014 09:47:15 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"

* remotes/stefanha/tags/block-pull-request: (23 commits)
  block: add backing-file option to block-stream
  block: extend block-commit to accept a string for the backing file
  block: add helper function to determine if a BDS is in a chain
  block: add QAPI command to allow live backing file change
  qapi: Change back sector-count to sectors-count in quorum QAPI events.
  block/cow: Avoid use of uninitialized cow_bs in error path
  block: simplify bdrv_find_base() and bdrv_find_overlay()
  block: make 'top' argument to block-commit optional
  iotests: Add more tests to quick group
  iotests: Add qemu tests to quick group
  iotests: Simplify qemu-iotests-quick.sh
  qemu-img create: add 'nocow' option
  virtio-blk: remove need for explicit x-data-plane=on option
  qdev: drop iothread property type
  virtio-blk: replace x-iothread with iothread link property
  virtio-blk: move qdev properties into virtio-blk.c
  virtio: fix virtio-blk child refcount in transports
  virtio-blk: drop virtio_blk_set_conf()
  virtio-blk: use aliases instead of duplicate qdev properties
  qdev: add qdev_alias_all_properties()
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

2 files changed, 21 insertions, 50 deletions

diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c
index 52c2f8a..8e140af 100644
--- a/hw/core/qdev-properties-system.c
+++ b/hw/core/qdev-properties-system.c
@@ -385,56 +385,6 @@ void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd)
     nd->instantiated = 1;
 }
 
-/* --- iothread --- */
-
-static char *print_iothread(void *ptr)
-{
-    return iothread_get_id(ptr);
-}
-
-static int parse_iothread(DeviceState *dev, const char *str, void **ptr)
-{
-    IOThread *iothread;
-
-    iothread = iothread_find(str);
-    if (!iothread) {
-        return -ENOENT;
-    }
-    object_ref(OBJECT(iothread));
-    *ptr = iothread;
-    return 0;
-}
-
-static void get_iothread(Object *obj, struct Visitor *v, void *opaque,
-                         const char *name, Error **errp)
-{
-    get_pointer(obj, v, opaque, print_iothread, name, errp);
-}
-
-static void set_iothread(Object *obj, struct Visitor *v, void *opaque,
-                         const char *name, Error **errp)
-{
-    set_pointer(obj, v, opaque, parse_iothread, name, errp);
-}
-
-static void release_iothread(Object *obj, const char *name, void *opaque)
-{
-    DeviceState *dev = DEVICE(obj);
-    Property *prop = opaque;
-    IOThread **ptr = qdev_get_prop_ptr(dev, prop);
-
-    if (*ptr) {
-        object_unref(OBJECT(*ptr));
-    }
-}
-
-PropertyInfo qdev_prop_iothread = {
-    .name = "iothread",
-    .get = get_iothread,
-    .set = set_iothread,
-    .release = release_iothread,
-};
-
 static int qdev_add_one_global(QemuOpts *opts, void *opaque)
 {
     GlobalProperty *g;
diff --git a/hw/core/qdev.c b/hw/core/qdev.c
index a2feb5a..3bdda8e 100644
--- a/hw/core/qdev.c
+++ b/hw/core/qdev.c
@@ -780,6 +780,27 @@ void qdev_property_add_static(DeviceState *dev, Property *prop,
     }
 }
 
+/* @qdev_alias_all_properties - Add alias properties to the source object for
+ * all qdev properties on the target DeviceState.
+ */
+void qdev_alias_all_properties(DeviceState *target, Object *source)
+{
+    ObjectClass *class;
+    Property *prop;
+
+    class = object_get_class(OBJECT(target));
+    do {
+        DeviceClass *dc = DEVICE_CLASS(class);
+
+        for (prop = dc->props; prop && prop->name; prop++) {
+            object_property_add_alias(source, prop->name,
+                                      OBJECT(target), prop->name,
+                                      &error_abort);
+        }
+        class = object_class_get_parent(class);
+    } while (class != object_class_by_name(TYPE_DEVICE));
+}
+
 static bool device_get_realized(Object *obj, Error **errp)
 {
     DeviceState *dev = DEVICE(obj);