Merge remote-tracking branch 'remotes/ehabkost/tags/python-next-pull-request' into...

[mirror_qemu.git] / qom / object_interfaces.c

diff --git a/qom/object_interfaces.c b/qom/object_interfaces.c
index a66cd6026cf652b52188283b0dadf603d1f6dc9c..db85d1eb75a05e39425820049a87800b0cbbe950 100644 (file)
--- a/qom/object_interfaces.c
+++ b/qom/object_interfaces.c
@@ -1,35 +1,189 @@
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qapi/qmp/qdict.h"
+#include "qapi/qmp/qerror.h"
 #include "qom/object_interfaces.h"
 #include "qemu/module.h"
+#include "qemu/option.h"
+#include "qapi/opts-visitor.h"
+#include "qemu/config-file.h"
 
-void user_creatable_complete(Object *obj, Error **errp)
+void user_creatable_complete(UserCreatable *uc, Error **errp)
 {
+    UserCreatableClass *ucc = USER_CREATABLE_GET_CLASS(uc);
 
-    UserCreatableClass *ucc;
-    UserCreatable *uc =
-        (UserCreatable *)object_dynamic_cast(obj, TYPE_USER_CREATABLE);
-
-    if (!uc) {
-        return;
-    }
-
-    ucc = USER_CREATABLE_GET_CLASS(uc);
     if (ucc->complete) {
         ucc->complete(uc, errp);
     }
 }
 
-bool user_creatable_can_be_deleted(UserCreatable *uc, Error **errp)
+bool user_creatable_can_be_deleted(UserCreatable *uc)
 {
 
     UserCreatableClass *ucc = USER_CREATABLE_GET_CLASS(uc);
 
     if (ucc->can_be_deleted) {
-        return ucc->can_be_deleted(uc, errp);
+        return ucc->can_be_deleted(uc);
     } else {
         return true;
     }
 }
 
+Object *user_creatable_add_type(const char *type, const char *id,
+                                const QDict *qdict,
+                                Visitor *v, Error **errp)
+{
+    Object *obj;
+    ObjectClass *klass;
+    const QDictEntry *e;
+    Error *local_err = NULL;
+
+    klass = object_class_by_name(type);
+    if (!klass) {
+        error_setg(errp, "invalid object type: %s", type);
+        return NULL;
+    }
+
+    if (!object_class_dynamic_cast(klass, TYPE_USER_CREATABLE)) {
+        error_setg(errp, "object type '%s' isn't supported by object-add",
+                   type);
+        return NULL;
+    }
+
+    if (object_class_is_abstract(klass)) {
+        error_setg(errp, "object type '%s' is abstract", type);
+        return NULL;
+    }
+
+    assert(qdict);
+    obj = object_new(type);
+    visit_start_struct(v, NULL, NULL, 0, &local_err);
+    if (local_err) {
+        goto out;
+    }
+    for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) {
+        object_property_set(obj, v, e->key, &local_err);
+        if (local_err) {
+            break;
+        }
+    }
+    if (!local_err) {
+        visit_check_struct(v, &local_err);
+    }
+    visit_end_struct(v, NULL);
+    if (local_err) {
+        goto out;
+    }
+
+    object_property_add_child(object_get_objects_root(),
+                              id, obj, &local_err);
+    if (local_err) {
+        goto out;
+    }
+
+    user_creatable_complete(USER_CREATABLE(obj), &local_err);
+    if (local_err) {
+        object_property_del(object_get_objects_root(),
+                            id, &error_abort);
+        goto out;
+    }
+out:
+    if (local_err) {
+        error_propagate(errp, local_err);
+        object_unref(obj);
+        return NULL;
+    }
+    return obj;
+}
+
+
+Object *user_creatable_add_opts(QemuOpts *opts, Error **errp)
+{
+    Visitor *v;
+    QDict *pdict;
+    Object *obj;
+    const char *id = qemu_opts_id(opts);
+    char *type = qemu_opt_get_del(opts, "qom-type");
+
+    if (!type) {
+        error_setg(errp, QERR_MISSING_PARAMETER, "qom-type");
+        return NULL;
+    }
+    if (!id) {
+        error_setg(errp, QERR_MISSING_PARAMETER, "id");
+        qemu_opt_set(opts, "qom-type", type, &error_abort);
+        g_free(type);
+        return NULL;
+    }
+
+    qemu_opts_set_id(opts, NULL);
+    pdict = qemu_opts_to_qdict(opts, NULL);
+
+    v = opts_visitor_new(opts);
+    obj = user_creatable_add_type(type, id, pdict, v, errp);
+    visit_free(v);
+
+    qemu_opts_set_id(opts, (char *) id);
+    qemu_opt_set(opts, "qom-type", type, &error_abort);
+    g_free(type);
+    qobject_unref(pdict);
+    return obj;
+}
+
+
+int user_creatable_add_opts_foreach(void *opaque, QemuOpts *opts, Error **errp)
+{
+    bool (*type_opt_predicate)(const char *, QemuOpts *) = opaque;
+    Object *obj = NULL;
+    const char *type;
+
+    type = qemu_opt_get(opts, "qom-type");
+    if (type && type_opt_predicate &&
+        !type_opt_predicate(type, opts)) {
+        return 0;
+    }
+
+    obj = user_creatable_add_opts(opts, errp);
+    if (!obj) {
+        return -1;
+    }
+    object_unref(obj);
+    return 0;
+}
+
+
+void user_creatable_del(const char *id, Error **errp)
+{
+    Object *container;
+    Object *obj;
+
+    container = object_get_objects_root();
+    obj = object_resolve_path_component(container, id);
+    if (!obj) {
+        error_setg(errp, "object '%s' not found", id);
+        return;
+    }
+
+    if (!user_creatable_can_be_deleted(USER_CREATABLE(obj))) {
+        error_setg(errp, "object '%s' is in use, can not be deleted", id);
+        return;
+    }
+
+    /*
+     * if object was defined on the command-line, remove its corresponding
+     * option group entry
+     */
+    qemu_opts_del(qemu_opts_find(qemu_find_opts_err("object", &error_abort),
+                                 id));
+
+    object_unparent(obj);
+}
+
+void user_creatable_cleanup(void)
+{
+    object_unparent(object_get_objects_root());
+}
+
 static void register_types(void)
 {
     static const TypeInfo uc_interface_info = {