--- /dev/null
+/*
+ * QEMU Object Model
+ *
+ * Copyright IBM, Corp. 2011
+ *
+ * Authors:
+ * Anthony Liguori <aliguori@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qom/object.h"
+#include "qom/object_interfaces.h"
+#include "qemu-common.h"
+#include "qapi/visitor.h"
+#include "qapi-visit.h"
+#include "qapi/string-input-visitor.h"
+#include "qapi/string-output-visitor.h"
+#include "qapi/qmp/qerror.h"
+#include "trace.h"
+
+/* TODO: replace QObject with a simpler visitor to avoid a dependency
+ * of the QOM core on QObject? */
+#include "qom/qom-qobject.h"
+#include "qapi/qmp/qobject.h"
+#include "qapi/qmp/qbool.h"
+#include "qapi/qmp/qint.h"
+#include "qapi/qmp/qstring.h"
+
+#define MAX_INTERFACES 32
+
+typedef struct InterfaceImpl InterfaceImpl;
+typedef struct TypeImpl TypeImpl;
+
+struct InterfaceImpl
+{
+ const char *typename;
+};
+
+struct TypeImpl
+{
+ const char *name;
+
+ size_t class_size;
+
+ size_t instance_size;
+
+ void (*class_init)(ObjectClass *klass, void *data);
+ void (*class_base_init)(ObjectClass *klass, void *data);
+ void (*class_finalize)(ObjectClass *klass, void *data);
+
+ void *class_data;
+
+ void (*instance_init)(Object *obj);
+ void (*instance_post_init)(Object *obj);
+ void (*instance_finalize)(Object *obj);
+
+ bool abstract;
+
+ const char *parent;
+ TypeImpl *parent_type;
+
+ ObjectClass *class;
+
+ int num_interfaces;
+ InterfaceImpl interfaces[MAX_INTERFACES];
+};
+
+static Type type_interface;
+
+static GHashTable *type_table_get(void)
+{
+ static GHashTable *type_table;
+
+ if (type_table == NULL) {
+ type_table = g_hash_table_new(g_str_hash, g_str_equal);
+ }
+
+ return type_table;
+}
+
+static bool enumerating_types;
+
+static void type_table_add(TypeImpl *ti)
+{
+ assert(!enumerating_types);
+ g_hash_table_insert(type_table_get(), (void *)ti->name, ti);
+}
+
+static TypeImpl *type_table_lookup(const char *name)
+{
+ return g_hash_table_lookup(type_table_get(), name);
+}
+
+static TypeImpl *type_new(const TypeInfo *info)
+{
+ TypeImpl *ti = g_malloc0(sizeof(*ti));
+ int i;
+
+ g_assert(info->name != NULL);
+
+ if (type_table_lookup(info->name) != NULL) {
+ fprintf(stderr, "Registering `%s' which already exists\n", info->name);
+ abort();
+ }
+
+ ti->name = g_strdup(info->name);
+ ti->parent = g_strdup(info->parent);
+
+ ti->class_size = info->class_size;
+ ti->instance_size = info->instance_size;
+
+ ti->class_init = info->class_init;
+ ti->class_base_init = info->class_base_init;
+ ti->class_finalize = info->class_finalize;
+ ti->class_data = info->class_data;
+
+ ti->instance_init = info->instance_init;
+ ti->instance_post_init = info->instance_post_init;
+ ti->instance_finalize = info->instance_finalize;
+
+ ti->abstract = info->abstract;
+
+ for (i = 0; info->interfaces && info->interfaces[i].type; i++) {
+ ti->interfaces[i].typename = g_strdup(info->interfaces[i].type);
+ }
+ ti->num_interfaces = i;
+
+ return ti;
+}
+
+static TypeImpl *type_register_internal(const TypeInfo *info)
+{
+ TypeImpl *ti;
+ ti = type_new(info);
+
+ type_table_add(ti);
+ return ti;
+}
+
+TypeImpl *type_register(const TypeInfo *info)
+{
+ assert(info->parent);
+ return type_register_internal(info);
+}
+
+TypeImpl *type_register_static(const TypeInfo *info)
+{
+ return type_register(info);
+}
+
+static TypeImpl *type_get_by_name(const char *name)
+{
+ if (name == NULL) {
+ return NULL;
+ }
+
+ return type_table_lookup(name);
+}
+
+static TypeImpl *type_get_parent(TypeImpl *type)
+{
+ if (!type->parent_type && type->parent) {
+ type->parent_type = type_get_by_name(type->parent);
+ g_assert(type->parent_type != NULL);
+ }
+
+ return type->parent_type;
+}
+
+static bool type_has_parent(TypeImpl *type)
+{
+ return (type->parent != NULL);
+}
+
+static size_t type_class_get_size(TypeImpl *ti)
+{
+ if (ti->class_size) {
+ return ti->class_size;
+ }
+
+ if (type_has_parent(ti)) {
+ return type_class_get_size(type_get_parent(ti));
+ }
+
+ return sizeof(ObjectClass);
+}
+
+static size_t type_object_get_size(TypeImpl *ti)
+{
+ if (ti->instance_size) {
+ return ti->instance_size;
+ }
+
+ if (type_has_parent(ti)) {
+ return type_object_get_size(type_get_parent(ti));
+ }
+
+ return 0;
+}
+
+static bool type_is_ancestor(TypeImpl *type, TypeImpl *target_type)
+{
+ assert(target_type);
+
+ /* Check if typename is a direct ancestor of type */
+ while (type) {
+ if (type == target_type) {
+ return true;
+ }
+
+ type = type_get_parent(type);
+ }
+
+ return false;
+}
+
+static void type_initialize(TypeImpl *ti);
+
+static void type_initialize_interface(TypeImpl *ti, TypeImpl *interface_type,
+ TypeImpl *parent_type)
+{
+ InterfaceClass *new_iface;
+ TypeInfo info = { };
+ TypeImpl *iface_impl;
+
+ info.parent = parent_type->name;
+ info.name = g_strdup_printf("%s::%s", ti->name, interface_type->name);
+ info.abstract = true;
+
+ iface_impl = type_new(&info);
+ iface_impl->parent_type = parent_type;
+ type_initialize(iface_impl);
+ g_free((char *)info.name);
+
+ new_iface = (InterfaceClass *)iface_impl->class;
+ new_iface->concrete_class = ti->class;
+ new_iface->interface_type = interface_type;
+
+ ti->class->interfaces = g_slist_append(ti->class->interfaces,
+ iface_impl->class);
+}
+
+static void type_initialize(TypeImpl *ti)
+{
+ TypeImpl *parent;
+
+ if (ti->class) {
+ return;
+ }
+
+ ti->class_size = type_class_get_size(ti);
+ ti->instance_size = type_object_get_size(ti);
+
+ ti->class = g_malloc0(ti->class_size);
+
+ parent = type_get_parent(ti);
+ if (parent) {
+ type_initialize(parent);
+ GSList *e;
+ int i;
+
+ g_assert(parent->class_size <= ti->class_size);
+ memcpy(ti->class, parent->class, parent->class_size);
+ ti->class->interfaces = NULL;
+
+ for (e = parent->class->interfaces; e; e = e->next) {
+ InterfaceClass *iface = e->data;
+ ObjectClass *klass = OBJECT_CLASS(iface);
+
+ type_initialize_interface(ti, iface->interface_type, klass->type);
+ }
+
+ for (i = 0; i < ti->num_interfaces; i++) {
+ TypeImpl *t = type_get_by_name(ti->interfaces[i].typename);
+ for (e = ti->class->interfaces; e; e = e->next) {
+ TypeImpl *target_type = OBJECT_CLASS(e->data)->type;
+
+ if (type_is_ancestor(target_type, t)) {
+ break;
+ }
+ }
+
+ if (e) {
+ continue;
+ }
+
+ type_initialize_interface(ti, t, t);
+ }
+ }
+
+ ti->class->type = ti;
+
+ while (parent) {
+ if (parent->class_base_init) {
+ parent->class_base_init(ti->class, ti->class_data);
+ }
+ parent = type_get_parent(parent);
+ }
+
+ if (ti->class_init) {
+ ti->class_init(ti->class, ti->class_data);
+ }
+}
+
+static void object_init_with_type(Object *obj, TypeImpl *ti)
+{
+ if (type_has_parent(ti)) {
+ object_init_with_type(obj, type_get_parent(ti));
+ }
+
+ if (ti->instance_init) {
+ ti->instance_init(obj);
+ }
+}
+
+static void object_post_init_with_type(Object *obj, TypeImpl *ti)
+{
+ if (ti->instance_post_init) {
+ ti->instance_post_init(obj);
+ }
+
+ if (type_has_parent(ti)) {
+ object_post_init_with_type(obj, type_get_parent(ti));
+ }
+}
+
+void object_initialize_with_type(void *data, size_t size, TypeImpl *type)
+{
+ Object *obj = data;
+
+ g_assert(type != NULL);
+ type_initialize(type);
+
+ g_assert(type->instance_size >= sizeof(Object));
+ g_assert(type->abstract == false);
+ g_assert(size >= type->instance_size);
+
+ memset(obj, 0, type->instance_size);
+ obj->class = type->class;
+ object_ref(obj);
+ QTAILQ_INIT(&obj->properties);
+ object_init_with_type(obj, type);
+ object_post_init_with_type(obj, type);
+}
+
+void object_initialize(void *data, size_t size, const char *typename)
+{
+ TypeImpl *type = type_get_by_name(typename);
+
+ object_initialize_with_type(data, size, type);
+}
+
+static inline bool object_property_is_child(ObjectProperty *prop)
+{
+ return strstart(prop->type, "child<", NULL);
+}
+
+static void object_property_del_all(Object *obj)
+{
+ while (!QTAILQ_EMPTY(&obj->properties)) {
+ ObjectProperty *prop = QTAILQ_FIRST(&obj->properties);
+
+ QTAILQ_REMOVE(&obj->properties, prop, node);
+
+ if (prop->release) {
+ prop->release(obj, prop->name, prop->opaque);
+ }
+
+ g_free(prop->name);
+ g_free(prop->type);
+ g_free(prop->description);
+ g_free(prop);
+ }
+}
+
+static void object_property_del_child(Object *obj, Object *child, Error **errp)
+{
+ ObjectProperty *prop;
+
+ QTAILQ_FOREACH(prop, &obj->properties, node) {
+ if (object_property_is_child(prop) && prop->opaque == child) {
+ object_property_del(obj, prop->name, errp);
+ break;
+ }
+ }
+}
+
+void object_unparent(Object *obj)
+{
+ if (obj->parent) {
+ object_property_del_child(obj->parent, obj, NULL);
+ }
+}
+
+static void object_deinit(Object *obj, TypeImpl *type)
+{
+ if (type->instance_finalize) {
+ type->instance_finalize(obj);
+ }
+
+ if (type_has_parent(type)) {
+ object_deinit(obj, type_get_parent(type));
+ }
+}
+
+static void object_finalize(void *data)
+{
+ Object *obj = data;
+ TypeImpl *ti = obj->class->type;
+
+ object_property_del_all(obj);
+ object_deinit(obj, ti);
+
+ g_assert(obj->ref == 0);
+ if (obj->free) {
+ obj->free(obj);
+ }
+}
+
+Object *object_new_with_type(Type type)
+{
+ Object *obj;
+
+ g_assert(type != NULL);
+ type_initialize(type);
+
+ obj = g_malloc(type->instance_size);
+ object_initialize_with_type(obj, type->instance_size, type);
+ obj->free = g_free;
+
+ return obj;
+}
+
+Object *object_new(const char *typename)
+{
+ TypeImpl *ti = type_get_by_name(typename);
+
+ return object_new_with_type(ti);
+}
+
+
+Object *object_new_with_props(const char *typename,
+ Object *parent,
+ const char *id,
+ Error **errp,
+ ...)
+{
+ va_list vargs;
+ Object *obj;
+
+ va_start(vargs, errp);
+ obj = object_new_with_propv(typename, parent, id, errp, vargs);
+ va_end(vargs);
+
+ return obj;
+}
+
+
+Object *object_new_with_propv(const char *typename,
+ Object *parent,
+ const char *id,
+ Error **errp,
+ va_list vargs)
+{
+ Object *obj;
+ ObjectClass *klass;
+ Error *local_err = NULL;
+
+ klass = object_class_by_name(typename);
+ if (!klass) {
+ error_setg(errp, "invalid object type: %s", typename);
+ return NULL;
+ }
+
+ if (object_class_is_abstract(klass)) {
+ error_setg(errp, "object type '%s' is abstract", typename);
+ return NULL;
+ }
+ obj = object_new(typename);
+
+ if (object_set_propv(obj, &local_err, vargs) < 0) {
+ goto error;
+ }
+
+ object_property_add_child(parent, id, obj, &local_err);
+ if (local_err) {
+ goto error;
+ }
+
+ if (object_dynamic_cast(obj, TYPE_USER_CREATABLE)) {
+ user_creatable_complete(obj, &local_err);
+ if (local_err) {
+ object_unparent(obj);
+ goto error;
+ }
+ }
+
+ object_unref(OBJECT(obj));
+ return obj;
+
+ error:
+ if (local_err) {
+ error_propagate(errp, local_err);
+ }
+ object_unref(obj);
+ return NULL;
+}
+
+
+int object_set_props(Object *obj,
+ Error **errp,
+ ...)
+{
+ va_list vargs;
+ int ret;
+
+ va_start(vargs, errp);
+ ret = object_set_propv(obj, errp, vargs);
+ va_end(vargs);
+
+ return ret;
+}
+
+
+int object_set_propv(Object *obj,
+ Error **errp,
+ va_list vargs)
+{
+ const char *propname;
+ Error *local_err = NULL;
+
+ propname = va_arg(vargs, char *);
+ while (propname != NULL) {
+ const char *value = va_arg(vargs, char *);
+
+ g_assert(value != NULL);
+ object_property_parse(obj, value, propname, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return -1;
+ }
+ propname = va_arg(vargs, char *);
+ }
+
+ return 0;
+}
+
+
+Object *object_dynamic_cast(Object *obj, const char *typename)
+{
+ if (obj && object_class_dynamic_cast(object_get_class(obj), typename)) {
+ return obj;
+ }
+
+ return NULL;
+}
+
+Object *object_dynamic_cast_assert(Object *obj, const char *typename,
+ const char *file, int line, const char *func)
+{
+ trace_object_dynamic_cast_assert(obj ? obj->class->type->name : "(null)",
+ typename, file, line, func);
+
+#ifdef CONFIG_QOM_CAST_DEBUG
+ int i;
+ Object *inst;
+
+ for (i = 0; obj && i < OBJECT_CLASS_CAST_CACHE; i++) {
+ if (obj->class->object_cast_cache[i] == typename) {
+ goto out;
+ }
+ }
+
+ inst = object_dynamic_cast(obj, typename);
+
+ if (!inst && obj) {
+ fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n",
+ file, line, func, obj, typename);
+ abort();
+ }
+
+ assert(obj == inst);
+
+ if (obj && obj == inst) {
+ for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) {
+ obj->class->object_cast_cache[i - 1] =
+ obj->class->object_cast_cache[i];
+ }
+ obj->class->object_cast_cache[i - 1] = typename;
+ }
+
+out:
+#endif
+ return obj;
+}
+
+ObjectClass *object_class_dynamic_cast(ObjectClass *class,
+ const char *typename)
+{
+ ObjectClass *ret = NULL;
+ TypeImpl *target_type;
+ TypeImpl *type;
+
+ if (!class) {
+ return NULL;
+ }
+
+ /* A simple fast path that can trigger a lot for leaf classes. */
+ type = class->type;
+ if (type->name == typename) {
+ return class;
+ }
+
+ target_type = type_get_by_name(typename);
+ if (!target_type) {
+ /* target class type unknown, so fail the cast */
+ return NULL;
+ }
+
+ if (type->class->interfaces &&
+ type_is_ancestor(target_type, type_interface)) {
+ int found = 0;
+ GSList *i;
+
+ for (i = class->interfaces; i; i = i->next) {
+ ObjectClass *target_class = i->data;
+
+ if (type_is_ancestor(target_class->type, target_type)) {
+ ret = target_class;
+ found++;
+ }
+ }
+
+ /* The match was ambiguous, don't allow a cast */
+ if (found > 1) {
+ ret = NULL;
+ }
+ } else if (type_is_ancestor(type, target_type)) {
+ ret = class;
+ }
+
+ return ret;
+}
+
+ObjectClass *object_class_dynamic_cast_assert(ObjectClass *class,
+ const char *typename,
+ const char *file, int line,
+ const char *func)
+{
+ ObjectClass *ret;
+
+ trace_object_class_dynamic_cast_assert(class ? class->type->name : "(null)",
+ typename, file, line, func);
+
+#ifdef CONFIG_QOM_CAST_DEBUG
+ int i;
+
+ for (i = 0; class && i < OBJECT_CLASS_CAST_CACHE; i++) {
+ if (class->class_cast_cache[i] == typename) {
+ ret = class;
+ goto out;
+ }
+ }
+#else
+ if (!class || !class->interfaces) {
+ return class;
+ }
+#endif
+
+ ret = object_class_dynamic_cast(class, typename);
+ if (!ret && class) {
+ fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n",
+ file, line, func, class, typename);
+ abort();
+ }
+
+#ifdef CONFIG_QOM_CAST_DEBUG
+ if (class && ret == class) {
+ for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) {
+ class->class_cast_cache[i - 1] = class->class_cast_cache[i];
+ }
+ class->class_cast_cache[i - 1] = typename;
+ }
+out:
+#endif
+ return ret;
+}
+
+const char *object_get_typename(Object *obj)
+{
+ return obj->class->type->name;
+}
+
+ObjectClass *object_get_class(Object *obj)
+{
+ return obj->class;
+}
+
+bool object_class_is_abstract(ObjectClass *klass)
+{
+ return klass->type->abstract;
+}
+
+const char *object_class_get_name(ObjectClass *klass)
+{
+ return klass->type->name;
+}
+
+ObjectClass *object_class_by_name(const char *typename)
+{
+ TypeImpl *type = type_get_by_name(typename);
+
+ if (!type) {
+ return NULL;
+ }
+
+ type_initialize(type);
+
+ return type->class;
+}
+
+ObjectClass *object_class_get_parent(ObjectClass *class)
+{
+ TypeImpl *type = type_get_parent(class->type);
+
+ if (!type) {
+ return NULL;
+ }
+
+ type_initialize(type);
+
+ return type->class;
+}
+
+typedef struct OCFData
+{
+ void (*fn)(ObjectClass *klass, void *opaque);
+ const char *implements_type;
+ bool include_abstract;
+ void *opaque;
+} OCFData;
+
+static void object_class_foreach_tramp(gpointer key, gpointer value,
+ gpointer opaque)
+{
+ OCFData *data = opaque;
+ TypeImpl *type = value;
+ ObjectClass *k;
+
+ type_initialize(type);
+ k = type->class;
+
+ if (!data->include_abstract && type->abstract) {
+ return;
+ }
+
+ if (data->implements_type &&
+ !object_class_dynamic_cast(k, data->implements_type)) {
+ return;
+ }
+
+ data->fn(k, data->opaque);
+}
+
+void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque),
+ const char *implements_type, bool include_abstract,
+ void *opaque)
+{
+ OCFData data = { fn, implements_type, include_abstract, opaque };
+
+ enumerating_types = true;
+ g_hash_table_foreach(type_table_get(), object_class_foreach_tramp, &data);
+ enumerating_types = false;
+}
+
+int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque),
+ void *opaque)
+{
+ ObjectProperty *prop, *next;
+ int ret = 0;
+
+ QTAILQ_FOREACH_SAFE(prop, &obj->properties, node, next) {
+ if (object_property_is_child(prop)) {
+ ret = fn(prop->opaque, opaque);
+ if (ret != 0) {
+ break;
+ }
+ }
+ }
+ return ret;
+}
+
+static void object_class_get_list_tramp(ObjectClass *klass, void *opaque)
+{
+ GSList **list = opaque;
+
+ *list = g_slist_prepend(*list, klass);
+}
+
+GSList *object_class_get_list(const char *implements_type,
+ bool include_abstract)
+{
+ GSList *list = NULL;
+
+ object_class_foreach(object_class_get_list_tramp,
+ implements_type, include_abstract, &list);
+ return list;
+}
+
+void object_ref(Object *obj)
+{
+ if (!obj) {
+ return;
+ }
+ atomic_inc(&obj->ref);
+}
+
+void object_unref(Object *obj)
+{
+ if (!obj) {
+ return;
+ }
+ g_assert(obj->ref > 0);
+
+ /* parent always holds a reference to its children */
+ if (atomic_fetch_dec(&obj->ref) == 1) {
+ object_finalize(obj);
+ }
+}
+
+ObjectProperty *
+object_property_add(Object *obj, const char *name, const char *type,
+ ObjectPropertyAccessor *get,
+ ObjectPropertyAccessor *set,
+ ObjectPropertyRelease *release,
+ void *opaque, Error **errp)
+{
+ ObjectProperty *prop;
+ size_t name_len = strlen(name);
+
+ if (name_len >= 3 && !memcmp(name + name_len - 3, "[*]", 4)) {
+ int i;
+ ObjectProperty *ret;
+ char *name_no_array = g_strdup(name);
+
+ name_no_array[name_len - 3] = '\0';
+ for (i = 0; ; ++i) {
+ char *full_name = g_strdup_printf("%s[%d]", name_no_array, i);
+
+ ret = object_property_add(obj, full_name, type, get, set,
+ release, opaque, NULL);
+ g_free(full_name);
+ if (ret) {
+ break;
+ }
+ }
+ g_free(name_no_array);
+ return ret;
+ }
+
+ QTAILQ_FOREACH(prop, &obj->properties, node) {
+ if (strcmp(prop->name, name) == 0) {
+ error_setg(errp, "attempt to add duplicate property '%s'"
+ " to object (type '%s')", name,
+ object_get_typename(obj));
+ return NULL;
+ }
+ }
+
+ prop = g_malloc0(sizeof(*prop));
+
+ prop->name = g_strdup(name);
+ prop->type = g_strdup(type);
+
+ prop->get = get;
+ prop->set = set;
+ prop->release = release;
+ prop->opaque = opaque;
+
+ QTAILQ_INSERT_TAIL(&obj->properties, prop, node);
+ return prop;
+}
+
+ObjectProperty *object_property_find(Object *obj, const char *name,
+ Error **errp)
+{
+ ObjectProperty *prop;
+
+ QTAILQ_FOREACH(prop, &obj->properties, node) {
+ if (strcmp(prop->name, name) == 0) {
+ return prop;
+ }
+ }
+
+ error_setg(errp, "Property '.%s' not found", name);
+ return NULL;
+}
+
+void object_property_del(Object *obj, const char *name, Error **errp)
+{
+ ObjectProperty *prop = object_property_find(obj, name, errp);
+ if (prop == NULL) {
+ return;
+ }
+
+ if (prop->release) {
+ prop->release(obj, name, prop->opaque);
+ }
+
+ QTAILQ_REMOVE(&obj->properties, prop, node);
+
+ g_free(prop->name);
+ g_free(prop->type);
+ g_free(prop->description);
+ g_free(prop);
+}
+
+void object_property_get(Object *obj, Visitor *v, const char *name,
+ Error **errp)
+{
+ ObjectProperty *prop = object_property_find(obj, name, errp);
+ if (prop == NULL) {
+ return;
+ }
+
+ if (!prop->get) {
+ error_setg(errp, QERR_PERMISSION_DENIED);
+ } else {
+ prop->get(obj, v, prop->opaque, name, errp);
+ }
+}
+
+void object_property_set(Object *obj, Visitor *v, const char *name,
+ Error **errp)
+{
+ ObjectProperty *prop = object_property_find(obj, name, errp);
+ if (prop == NULL) {
+ return;
+ }
+
+ if (!prop->set) {
+ error_setg(errp, QERR_PERMISSION_DENIED);
+ } else {
+ prop->set(obj, v, prop->opaque, name, errp);
+ }
+}
+
+void object_property_set_str(Object *obj, const char *value,
+ const char *name, Error **errp)
+{
+ QString *qstr = qstring_from_str(value);
+ object_property_set_qobject(obj, QOBJECT(qstr), name, errp);
+
+ QDECREF(qstr);
+}
+
+char *object_property_get_str(Object *obj, const char *name,
+ Error **errp)
+{
+ QObject *ret = object_property_get_qobject(obj, name, errp);
+ QString *qstring;
+ char *retval;
+
+ if (!ret) {
+ return NULL;
+ }
+ qstring = qobject_to_qstring(ret);
+ if (!qstring) {
+ error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "string");
+ retval = NULL;
+ } else {
+ retval = g_strdup(qstring_get_str(qstring));
+ }
+
+ QDECREF(qstring);
+ return retval;
+}
+
+void object_property_set_link(Object *obj, Object *value,
+ const char *name, Error **errp)
+{
+ if (value) {
+ gchar *path = object_get_canonical_path(value);
+ object_property_set_str(obj, path, name, errp);
+ g_free(path);
+ } else {
+ object_property_set_str(obj, "", name, errp);
+ }
+}
+
+Object *object_property_get_link(Object *obj, const char *name,
+ Error **errp)
+{
+ char *str = object_property_get_str(obj, name, errp);
+ Object *target = NULL;
+
+ if (str && *str) {
+ target = object_resolve_path(str, NULL);
+ if (!target) {
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "Device '%s' not found", str);
+ }
+ }
+
+ g_free(str);
+ return target;
+}
+
+void object_property_set_bool(Object *obj, bool value,
+ const char *name, Error **errp)
+{
+ QBool *qbool = qbool_from_bool(value);
+ object_property_set_qobject(obj, QOBJECT(qbool), name, errp);
+
+ QDECREF(qbool);
+}
+
+bool object_property_get_bool(Object *obj, const char *name,
+ Error **errp)
+{
+ QObject *ret = object_property_get_qobject(obj, name, errp);
+ QBool *qbool;
+ bool retval;
+
+ if (!ret) {
+ return false;
+ }
+ qbool = qobject_to_qbool(ret);
+ if (!qbool) {
+ error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "boolean");
+ retval = false;
+ } else {
+ retval = qbool_get_bool(qbool);
+ }
+
+ QDECREF(qbool);
+ return retval;
+}
+
+void object_property_set_int(Object *obj, int64_t value,
+ const char *name, Error **errp)
+{
+ QInt *qint = qint_from_int(value);
+ object_property_set_qobject(obj, QOBJECT(qint), name, errp);
+
+ QDECREF(qint);
+}
+
+int64_t object_property_get_int(Object *obj, const char *name,
+ Error **errp)
+{
+ QObject *ret = object_property_get_qobject(obj, name, errp);
+ QInt *qint;
+ int64_t retval;
+
+ if (!ret) {
+ return -1;
+ }
+ qint = qobject_to_qint(ret);
+ if (!qint) {
+ error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "int");
+ retval = -1;
+ } else {
+ retval = qint_get_int(qint);
+ }
+
+ QDECREF(qint);
+ return retval;
+}
+
+typedef struct EnumProperty {
+ const char * const *strings;
+ int (*get)(Object *, Error **);
+ void (*set)(Object *, int, Error **);
+} EnumProperty;
+
+int object_property_get_enum(Object *obj, const char *name,
+ const char *typename, Error **errp)
+{
+ StringOutputVisitor *sov;
+ StringInputVisitor *siv;
+ char *str;
+ int ret;
+ ObjectProperty *prop = object_property_find(obj, name, errp);
+ EnumProperty *enumprop;
+
+ if (prop == NULL) {
+ return 0;
+ }
+
+ if (!g_str_equal(prop->type, typename)) {
+ error_setg(errp, "Property %s on %s is not '%s' enum type",
+ name, object_class_get_name(
+ object_get_class(obj)), typename);
+ return 0;
+ }
+
+ enumprop = prop->opaque;
+
+ sov = string_output_visitor_new(false);
+ object_property_get(obj, string_output_get_visitor(sov), name, errp);
+ str = string_output_get_string(sov);
+ siv = string_input_visitor_new(str);
+ string_output_visitor_cleanup(sov);
+ visit_type_enum(string_input_get_visitor(siv),
+ &ret, enumprop->strings, NULL, name, errp);
+
+ g_free(str);
+ string_input_visitor_cleanup(siv);
+
+ return ret;
+}
+
+void object_property_get_uint16List(Object *obj, const char *name,
+ uint16List **list, Error **errp)
+{
+ StringOutputVisitor *ov;
+ StringInputVisitor *iv;
+ char *str;
+
+ ov = string_output_visitor_new(false);
+ object_property_get(obj, string_output_get_visitor(ov),
+ name, errp);
+ str = string_output_get_string(ov);
+ iv = string_input_visitor_new(str);
+ visit_type_uint16List(string_input_get_visitor(iv),
+ list, NULL, errp);
+
+ g_free(str);
+ string_output_visitor_cleanup(ov);
+ string_input_visitor_cleanup(iv);
+}
+
+void object_property_parse(Object *obj, const char *string,
+ const char *name, Error **errp)
+{
+ StringInputVisitor *mi;
+ mi = string_input_visitor_new(string);
+ object_property_set(obj, string_input_get_visitor(mi), name, errp);
+
+ string_input_visitor_cleanup(mi);
+}
+
+char *object_property_print(Object *obj, const char *name, bool human,
+ Error **errp)
+{
+ StringOutputVisitor *mo;
+ char *string = NULL;
+ Error *local_err = NULL;
+
+ mo = string_output_visitor_new(human);
+ object_property_get(obj, string_output_get_visitor(mo), name, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ goto out;
+ }
+
+ string = string_output_get_string(mo);
+
+out:
+ string_output_visitor_cleanup(mo);
+ return string;
+}
+
+const char *object_property_get_type(Object *obj, const char *name, Error **errp)
+{
+ ObjectProperty *prop = object_property_find(obj, name, errp);
+ if (prop == NULL) {
+ return NULL;
+ }
+
+ return prop->type;
+}
+
+Object *object_get_root(void)
+{
+ static Object *root;
+
+ if (!root) {
+ root = object_new("container");
+ }
+
+ return root;
+}
+
+Object *object_get_objects_root(void)
+{
+ return container_get(object_get_root(), "/objects");
+}
+
+static void object_get_child_property(Object *obj, Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ Object *child = opaque;
+ gchar *path;
+
+ path = object_get_canonical_path(child);
+ visit_type_str(v, &path, name, errp);
+ g_free(path);
+}
+
+static Object *object_resolve_child_property(Object *parent, void *opaque, const gchar *part)
+{
+ return opaque;
+}
+
+static void object_finalize_child_property(Object *obj, const char *name,
+ void *opaque)
+{
+ Object *child = opaque;
+
+ if (child->class->unparent) {
+ (child->class->unparent)(child);
+ }
+ child->parent = NULL;
+ object_unref(child);
+}
+
+void object_property_add_child(Object *obj, const char *name,
+ Object *child, Error **errp)
+{
+ Error *local_err = NULL;
+ gchar *type;
+ ObjectProperty *op;
+
+ if (child->parent != NULL) {
+ error_setg(errp, "child object is already parented");
+ return;
+ }
+
+ type = g_strdup_printf("child<%s>", object_get_typename(OBJECT(child)));
+
+ op = object_property_add(obj, name, type, object_get_child_property, NULL,
+ object_finalize_child_property, child, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ goto out;
+ }
+
+ op->resolve = object_resolve_child_property;
+ object_ref(child);
+ child->parent = obj;
+
+out:
+ g_free(type);
+}
+
+void object_property_allow_set_link(Object *obj, const char *name,
+ Object *val, Error **errp)
+{
+ /* Allow the link to be set, always */
+}
+
+typedef struct {
+ Object **child;
+ void (*check)(Object *, const char *, Object *, Error **);
+ ObjectPropertyLinkFlags flags;
+} LinkProperty;
+
+static void object_get_link_property(Object *obj, Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ LinkProperty *lprop = opaque;
+ Object **child = lprop->child;
+ gchar *path;
+
+ if (*child) {
+ path = object_get_canonical_path(*child);
+ visit_type_str(v, &path, name, errp);
+ g_free(path);
+ } else {
+ path = (gchar *)"";
+ visit_type_str(v, &path, name, errp);
+ }
+}
+
+/*
+ * object_resolve_link:
+ *
+ * Lookup an object and ensure its type matches the link property type. This
+ * is similar to object_resolve_path() except type verification against the
+ * link property is performed.
+ *
+ * Returns: The matched object or NULL on path lookup failures.
+ */
+static Object *object_resolve_link(Object *obj, const char *name,
+ const char *path, Error **errp)
+{
+ const char *type;
+ gchar *target_type;
+ bool ambiguous = false;
+ Object *target;
+
+ /* Go from link<FOO> to FOO. */
+ type = object_property_get_type(obj, name, NULL);
+ target_type = g_strndup(&type[5], strlen(type) - 6);
+ target = object_resolve_path_type(path, target_type, &ambiguous);
+
+ if (ambiguous) {
+ error_set(errp, ERROR_CLASS_GENERIC_ERROR,
+ "Path '%s' does not uniquely identify an object", path);
+ } else if (!target) {
+ target = object_resolve_path(path, &ambiguous);
+ if (target || ambiguous) {
+ error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, target_type);
+ } else {
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "Device '%s' not found", path);
+ }
+ target = NULL;
+ }
+ g_free(target_type);
+
+ return target;
+}
+
+static void object_set_link_property(Object *obj, Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ Error *local_err = NULL;
+ LinkProperty *prop = opaque;
+ Object **child = prop->child;
+ Object *old_target = *child;
+ Object *new_target = NULL;
+ char *path = NULL;
+
+ visit_type_str(v, &path, name, &local_err);
+
+ if (!local_err && strcmp(path, "") != 0) {
+ new_target = object_resolve_link(obj, name, path, &local_err);
+ }
+
+ g_free(path);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ prop->check(obj, name, new_target, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ object_ref(new_target);
+ *child = new_target;
+ object_unref(old_target);
+}
+
+static Object *object_resolve_link_property(Object *parent, void *opaque, const gchar *part)
+{
+ LinkProperty *lprop = opaque;
+
+ return *lprop->child;
+}
+
+static void object_release_link_property(Object *obj, const char *name,
+ void *opaque)
+{
+ LinkProperty *prop = opaque;
+
+ if ((prop->flags & OBJ_PROP_LINK_UNREF_ON_RELEASE) && *prop->child) {
+ object_unref(*prop->child);
+ }
+ g_free(prop);
+}
+
+void object_property_add_link(Object *obj, const char *name,
+ const char *type, Object **child,
+ void (*check)(Object *, const char *,
+ Object *, Error **),
+ ObjectPropertyLinkFlags flags,
+ Error **errp)
+{
+ Error *local_err = NULL;
+ LinkProperty *prop = g_malloc(sizeof(*prop));
+ gchar *full_type;
+ ObjectProperty *op;
+
+ prop->child = child;
+ prop->check = check;
+ prop->flags = flags;
+
+ full_type = g_strdup_printf("link<%s>", type);
+
+ op = object_property_add(obj, name, full_type,
+ object_get_link_property,
+ check ? object_set_link_property : NULL,
+ object_release_link_property,
+ prop,
+ &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ g_free(prop);
+ goto out;
+ }
+
+ op->resolve = object_resolve_link_property;
+
+out:
+ g_free(full_type);
+}
+
+void object_property_add_const_link(Object *obj, const char *name,
+ Object *target, Error **errp)
+{
+ char *link_type;
+ ObjectProperty *op;
+
+ link_type = g_strdup_printf("link<%s>", object_get_typename(target));
+ op = object_property_add(obj, name, link_type,
+ object_get_child_property, NULL,
+ NULL, target, errp);
+ if (op != NULL) {
+ op->resolve = object_resolve_child_property;
+ }
+ g_free(link_type);
+}
+
+gchar *object_get_canonical_path_component(Object *obj)
+{
+ ObjectProperty *prop = NULL;
+
+ g_assert(obj);
+ g_assert(obj->parent != NULL);
+
+ QTAILQ_FOREACH(prop, &obj->parent->properties, node) {
+ if (!object_property_is_child(prop)) {
+ continue;
+ }
+
+ if (prop->opaque == obj) {
+ return g_strdup(prop->name);
+ }
+ }
+
+ /* obj had a parent but was not a child, should never happen */
+ g_assert_not_reached();
+ return NULL;
+}
+
+gchar *object_get_canonical_path(Object *obj)
+{
+ Object *root = object_get_root();
+ char *newpath, *path = NULL;
+
+ while (obj != root) {
+ char *component = object_get_canonical_path_component(obj);
+
+ if (path) {
+ newpath = g_strdup_printf("%s/%s", component, path);
+ g_free(component);
+ g_free(path);
+ path = newpath;
+ } else {
+ path = component;
+ }
+
+ obj = obj->parent;
+ }
+
+ newpath = g_strdup_printf("/%s", path ? path : "");
+ g_free(path);
+
+ return newpath;
+}
+
+Object *object_resolve_path_component(Object *parent, const gchar *part)
+{
+ ObjectProperty *prop = object_property_find(parent, part, NULL);
+ if (prop == NULL) {
+ return NULL;
+ }
+
+ if (prop->resolve) {
+ return prop->resolve(parent, prop->opaque, part);
+ } else {
+ return NULL;
+ }
+}
+
+static Object *object_resolve_abs_path(Object *parent,
+ gchar **parts,
+ const char *typename,
+ int index)
+{
+ Object *child;
+
+ if (parts[index] == NULL) {
+ return object_dynamic_cast(parent, typename);
+ }
+
+ if (strcmp(parts[index], "") == 0) {
+ return object_resolve_abs_path(parent, parts, typename, index + 1);
+ }
+
+ child = object_resolve_path_component(parent, parts[index]);
+ if (!child) {
+ return NULL;
+ }
+
+ return object_resolve_abs_path(child, parts, typename, index + 1);
+}
+
+static Object *object_resolve_partial_path(Object *parent,
+ gchar **parts,
+ const char *typename,
+ bool *ambiguous)
+{
+ Object *obj;
+ ObjectProperty *prop;
+
+ obj = object_resolve_abs_path(parent, parts, typename, 0);
+
+ QTAILQ_FOREACH(prop, &parent->properties, node) {
+ Object *found;
+
+ if (!object_property_is_child(prop)) {
+ continue;
+ }
+
+ found = object_resolve_partial_path(prop->opaque, parts,
+ typename, ambiguous);
+ if (found) {
+ if (obj) {
+ if (ambiguous) {
+ *ambiguous = true;
+ }
+ return NULL;
+ }
+ obj = found;
+ }
+
+ if (ambiguous && *ambiguous) {
+ return NULL;
+ }
+ }
+
+ return obj;
+}
+
+Object *object_resolve_path_type(const char *path, const char *typename,
+ bool *ambiguous)
+{
+ Object *obj;
+ gchar **parts;
+
+ parts = g_strsplit(path, "/", 0);
+ assert(parts);
+
+ if (parts[0] == NULL || strcmp(parts[0], "") != 0) {
+ if (ambiguous) {
+ *ambiguous = false;
+ }
+ obj = object_resolve_partial_path(object_get_root(), parts,
+ typename, ambiguous);
+ } else {
+ obj = object_resolve_abs_path(object_get_root(), parts, typename, 1);
+ }
+
+ g_strfreev(parts);
+
+ return obj;
+}
+
+Object *object_resolve_path(const char *path, bool *ambiguous)
+{
+ return object_resolve_path_type(path, TYPE_OBJECT, ambiguous);
+}
+
+typedef struct StringProperty
+{
+ char *(*get)(Object *, Error **);
+ void (*set)(Object *, const char *, Error **);
+} StringProperty;
+
+static void property_get_str(Object *obj, Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ StringProperty *prop = opaque;
+ char *value;
+
+ value = prop->get(obj, errp);
+ if (value) {
+ visit_type_str(v, &value, name, errp);
+ g_free(value);
+ }
+}
+
+static void property_set_str(Object *obj, Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ StringProperty *prop = opaque;
+ char *value;
+ Error *local_err = NULL;
+
+ visit_type_str(v, &value, name, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ prop->set(obj, value, errp);
+ g_free(value);
+}
+
+static void property_release_str(Object *obj, const char *name,
+ void *opaque)
+{
+ StringProperty *prop = opaque;
+ g_free(prop);
+}
+
+void object_property_add_str(Object *obj, const char *name,
+ char *(*get)(Object *, Error **),
+ void (*set)(Object *, const char *, Error **),
+ Error **errp)
+{
+ Error *local_err = NULL;
+ StringProperty *prop = g_malloc0(sizeof(*prop));
+
+ prop->get = get;
+ prop->set = set;
+
+ object_property_add(obj, name, "string",
+ get ? property_get_str : NULL,
+ set ? property_set_str : NULL,
+ property_release_str,
+ prop, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ g_free(prop);
+ }
+}
+
+typedef struct BoolProperty
+{
+ bool (*get)(Object *, Error **);
+ void (*set)(Object *, bool, Error **);
+} BoolProperty;
+
+static void property_get_bool(Object *obj, Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ BoolProperty *prop = opaque;
+ bool value;
+
+ value = prop->get(obj, errp);
+ visit_type_bool(v, &value, name, errp);
+}
+
+static void property_set_bool(Object *obj, Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ BoolProperty *prop = opaque;
+ bool value;
+ Error *local_err = NULL;
+
+ visit_type_bool(v, &value, name, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ prop->set(obj, value, errp);
+}
+
+static void property_release_bool(Object *obj, const char *name,
+ void *opaque)
+{
+ BoolProperty *prop = opaque;
+ g_free(prop);
+}
+
+void object_property_add_bool(Object *obj, const char *name,
+ bool (*get)(Object *, Error **),
+ void (*set)(Object *, bool, Error **),
+ Error **errp)
+{
+ Error *local_err = NULL;
+ BoolProperty *prop = g_malloc0(sizeof(*prop));
+
+ prop->get = get;
+ prop->set = set;
+
+ object_property_add(obj, name, "bool",
+ get ? property_get_bool : NULL,
+ set ? property_set_bool : NULL,
+ property_release_bool,
+ prop, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ g_free(prop);
+ }
+}
+
+static void property_get_enum(Object *obj, Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ EnumProperty *prop = opaque;
+ int value;
+
+ value = prop->get(obj, errp);
+ visit_type_enum(v, &value, prop->strings, NULL, name, errp);
+}
+
+static void property_set_enum(Object *obj, Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ EnumProperty *prop = opaque;
+ int value;
+
+ visit_type_enum(v, &value, prop->strings, NULL, name, errp);
+ prop->set(obj, value, errp);
+}
+
+static void property_release_enum(Object *obj, const char *name,
+ void *opaque)
+{
+ EnumProperty *prop = opaque;
+ g_free(prop);
+}
+
+void object_property_add_enum(Object *obj, const char *name,
+ const char *typename,
+ const char * const *strings,
+ int (*get)(Object *, Error **),
+ void (*set)(Object *, int, Error **),
+ Error **errp)
+{
+ Error *local_err = NULL;
+ EnumProperty *prop = g_malloc(sizeof(*prop));
+
+ prop->strings = strings;
+ prop->get = get;
+ prop->set = set;
+
+ object_property_add(obj, name, typename,
+ get ? property_get_enum : NULL,
+ set ? property_set_enum : NULL,
+ property_release_enum,
+ prop, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ g_free(prop);
+ }
+}
+
+typedef struct TMProperty {
+ void (*get)(Object *, struct tm *, Error **);
+} TMProperty;
+
+static void property_get_tm(Object *obj, Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ TMProperty *prop = opaque;
+ Error *err = NULL;
+ struct tm value;
+
+ prop->get(obj, &value, &err);
+ if (err) {
+ goto out;
+ }
+
+ visit_start_struct(v, NULL, "struct tm", name, 0, &err);
+ if (err) {
+ goto out;
+ }
+ visit_type_int32(v, &value.tm_year, "tm_year", &err);
+ if (err) {
+ goto out_end;
+ }
+ visit_type_int32(v, &value.tm_mon, "tm_mon", &err);
+ if (err) {
+ goto out_end;
+ }
+ visit_type_int32(v, &value.tm_mday, "tm_mday", &err);
+ if (err) {
+ goto out_end;
+ }
+ visit_type_int32(v, &value.tm_hour, "tm_hour", &err);
+ if (err) {
+ goto out_end;
+ }
+ visit_type_int32(v, &value.tm_min, "tm_min", &err);
+ if (err) {
+ goto out_end;
+ }
+ visit_type_int32(v, &value.tm_sec, "tm_sec", &err);
+ if (err) {
+ goto out_end;
+ }
+out_end:
+ error_propagate(errp, err);
+ err = NULL;
+ visit_end_struct(v, errp);
+out:
+ error_propagate(errp, err);
+
+}
+
+static void property_release_tm(Object *obj, const char *name,
+ void *opaque)
+{
+ TMProperty *prop = opaque;
+ g_free(prop);
+}
+
+void object_property_add_tm(Object *obj, const char *name,
+ void (*get)(Object *, struct tm *, Error **),
+ Error **errp)
+{
+ Error *local_err = NULL;
+ TMProperty *prop = g_malloc0(sizeof(*prop));
+
+ prop->get = get;
+
+ object_property_add(obj, name, "struct tm",
+ get ? property_get_tm : NULL, NULL,
+ property_release_tm,
+ prop, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ g_free(prop);
+ }
+}
+
+static char *qdev_get_type(Object *obj, Error **errp)
+{
+ return g_strdup(object_get_typename(obj));
+}
+
+static void property_get_uint8_ptr(Object *obj, Visitor *v,
+ void *opaque, const char *name,
+ Error **errp)
+{
+ uint8_t value = *(uint8_t *)opaque;
+ visit_type_uint8(v, &value, name, errp);
+}
+
+static void property_get_uint16_ptr(Object *obj, Visitor *v,
+ void *opaque, const char *name,
+ Error **errp)
+{
+ uint16_t value = *(uint16_t *)opaque;
+ visit_type_uint16(v, &value, name, errp);
+}
+
+static void property_get_uint32_ptr(Object *obj, Visitor *v,
+ void *opaque, const char *name,
+ Error **errp)
+{
+ uint32_t value = *(uint32_t *)opaque;
+ visit_type_uint32(v, &value, name, errp);
+}
+
+static void property_get_uint64_ptr(Object *obj, Visitor *v,
+ void *opaque, const char *name,
+ Error **errp)
+{
+ uint64_t value = *(uint64_t *)opaque;
+ visit_type_uint64(v, &value, name, errp);
+}
+
+void object_property_add_uint8_ptr(Object *obj, const char *name,
+ const uint8_t *v, Error **errp)
+{
+ object_property_add(obj, name, "uint8", property_get_uint8_ptr,
+ NULL, NULL, (void *)v, errp);
+}
+
+void object_property_add_uint16_ptr(Object *obj, const char *name,
+ const uint16_t *v, Error **errp)
+{
+ object_property_add(obj, name, "uint16", property_get_uint16_ptr,
+ NULL, NULL, (void *)v, errp);
+}
+
+void object_property_add_uint32_ptr(Object *obj, const char *name,
+ const uint32_t *v, Error **errp)
+{
+ object_property_add(obj, name, "uint32", property_get_uint32_ptr,
+ NULL, NULL, (void *)v, errp);
+}
+
+void object_property_add_uint64_ptr(Object *obj, const char *name,
+ const uint64_t *v, Error **errp)
+{
+ object_property_add(obj, name, "uint64", property_get_uint64_ptr,
+ NULL, NULL, (void *)v, errp);
+}
+
+typedef struct {
+ Object *target_obj;
+ char *target_name;
+} AliasProperty;
+
+static void property_get_alias(Object *obj, struct Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ AliasProperty *prop = opaque;
+
+ object_property_get(prop->target_obj, v, prop->target_name, errp);
+}
+
+static void property_set_alias(Object *obj, struct Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ AliasProperty *prop = opaque;
+
+ object_property_set(prop->target_obj, v, prop->target_name, errp);
+}
+
+static Object *property_resolve_alias(Object *obj, void *opaque,
+ const gchar *part)
+{
+ AliasProperty *prop = opaque;
+
+ return object_resolve_path_component(prop->target_obj, prop->target_name);
+}
+
+static void property_release_alias(Object *obj, const char *name, void *opaque)
+{
+ AliasProperty *prop = opaque;
+
+ g_free(prop->target_name);
+ g_free(prop);
+}
+
+void object_property_add_alias(Object *obj, const char *name,
+ Object *target_obj, const char *target_name,
+ Error **errp)
+{
+ AliasProperty *prop;
+ ObjectProperty *op;
+ ObjectProperty *target_prop;
+ gchar *prop_type;
+ Error *local_err = NULL;
+
+ target_prop = object_property_find(target_obj, target_name, errp);
+ if (!target_prop) {
+ return;
+ }
+
+ if (object_property_is_child(target_prop)) {
+ prop_type = g_strdup_printf("link%s",
+ target_prop->type + strlen("child"));
+ } else {
+ prop_type = g_strdup(target_prop->type);
+ }
+
+ prop = g_malloc(sizeof(*prop));
+ prop->target_obj = target_obj;
+ prop->target_name = g_strdup(target_name);
+
+ op = object_property_add(obj, name, prop_type,
+ property_get_alias,
+ property_set_alias,
+ property_release_alias,
+ prop, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ g_free(prop);
+ goto out;
+ }
+ op->resolve = property_resolve_alias;
+
+ object_property_set_description(obj, op->name,
+ target_prop->description,
+ &error_abort);
+
+out:
+ g_free(prop_type);
+}
+
+void object_property_set_description(Object *obj, const char *name,
+ const char *description, Error **errp)
+{
+ ObjectProperty *op;
+
+ op = object_property_find(obj, name, errp);
+ if (!op) {
+ return;
+ }
+
+ g_free(op->description);
+ op->description = g_strdup(description);
+}
+
+static void object_instance_init(Object *obj)
+{
+ object_property_add_str(obj, "type", qdev_get_type, NULL, NULL);
+}
+
+static void register_types(void)
+{
+ static TypeInfo interface_info = {
+ .name = TYPE_INTERFACE,
+ .class_size = sizeof(InterfaceClass),
+ .abstract = true,
+ };
+
+ static TypeInfo object_info = {
+ .name = TYPE_OBJECT,
+ .instance_size = sizeof(Object),
+ .instance_init = object_instance_init,
+ .abstract = true,
+ };
+
+ type_interface = type_register_internal(&interface_info);
+ type_register_internal(&object_info);
+}
+
+type_init(register_types)
Code Review / kvmfornfv.git / blobdiff