| /* |
| * 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 "qemu/osdep.h" |
| #include "hw/qdev-core.h" |
| #include "qapi/error.h" |
| #include "qom/object.h" |
| #include "qom/object_interfaces.h" |
| #include "qemu/cutils.h" |
| #include "qapi/visitor.h" |
| #include "qapi/string-input-visitor.h" |
| #include "qapi/string-output-visitor.h" |
| #include "qapi/qobject-input-visitor.h" |
| #include "qapi/qapi-builtin-visit.h" |
| #include "qapi/qmp/qerror.h" |
| #include "qapi/qmp/qjson.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/qbool.h" |
| #include "qapi/qmp/qnum.h" |
| #include "qapi/qmp/qstring.h" |
| #include "qemu/error-report.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; |
| size_t instance_align; |
| |
| void (*class_init)(ObjectClass *klass, void *data); |
| void (*class_base_init)(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->instance_align = info->instance_align; |
| |
| ti->class_init = info->class_init; |
| ti->class_base_init = info->class_base_init; |
| 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); |
| } |
| |
| void type_register_static_array(const TypeInfo *infos, int nr_infos) |
| { |
| int i; |
| |
| for (i = 0; i < nr_infos; i++) { |
| type_register_static(&infos[i]); |
| } |
| } |
| |
| 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); |
| if (!type->parent_type) { |
| fprintf(stderr, "Type '%s' is missing its parent '%s'\n", |
| type->name, type->parent); |
| abort(); |
| } |
| } |
| |
| 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; |
| } |
| |
| size_t object_type_get_instance_size(const char *typename) |
| { |
| TypeImpl *type = type_get_by_name(typename); |
| |
| g_assert(type != NULL); |
| return type_object_get_size(type); |
| } |
| |
| static bool type_is_ancestor(TypeImpl *type, TypeImpl *target_type) |
| { |
| assert(target_type); |
| |
| /* Check if target_type 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, new_iface); |
| } |
| |
| static void object_property_free(gpointer data) |
| { |
| ObjectProperty *prop = data; |
| |
| if (prop->defval) { |
| qobject_unref(prop->defval); |
| prop->defval = NULL; |
| } |
| g_free(prop->name); |
| g_free(prop->type); |
| g_free(prop->description); |
| g_free(prop); |
| } |
| |
| 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); |
| /* Any type with zero instance_size is implicitly abstract. |
| * This means interface types are all abstract. |
| */ |
| if (ti->instance_size == 0) { |
| ti->abstract = true; |
| } |
| if (type_is_ancestor(ti, type_interface)) { |
| assert(ti->instance_size == 0); |
| assert(ti->abstract); |
| assert(!ti->instance_init); |
| assert(!ti->instance_post_init); |
| assert(!ti->instance_finalize); |
| assert(!ti->num_interfaces); |
| } |
| 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); |
| g_assert(parent->instance_size <= ti->instance_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); |
| if (!t) { |
| error_report("missing interface '%s' for object '%s'", |
| ti->interfaces[i].typename, parent->name); |
| abort(); |
| } |
| 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->properties = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, |
| object_property_free); |
| |
| 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)); |
| } |
| } |
| |
| bool object_apply_global_props(Object *obj, const GPtrArray *props, |
| Error **errp) |
| { |
| int i; |
| |
| if (!props) { |
| return true; |
| } |
| |
| for (i = 0; i < props->len; i++) { |
| GlobalProperty *p = g_ptr_array_index(props, i); |
| Error *err = NULL; |
| |
| if (object_dynamic_cast(obj, p->driver) == NULL) { |
| continue; |
| } |
| if (p->optional && !object_property_find(obj, p->property)) { |
| continue; |
| } |
| p->used = true; |
| if (!object_property_parse(obj, p->property, p->value, &err)) { |
| error_prepend(&err, "can't apply global %s.%s=%s: ", |
| p->driver, p->property, p->value); |
| /* |
| * If errp != NULL, propagate error and return. |
| * If errp == NULL, report a warning, but keep going |
| * with the remaining globals. |
| */ |
| if (errp) { |
| error_propagate(errp, err); |
| return false; |
| } else { |
| warn_report_err(err); |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| /* |
| * Global property defaults |
| * Slot 0: accelerator's global property defaults |
| * Slot 1: machine's global property defaults |
| * Slot 2: global properties from legacy command line option |
| * Each is a GPtrArray of of GlobalProperty. |
| * Applied in order, later entries override earlier ones. |
| */ |
| static GPtrArray *object_compat_props[3]; |
| |
| /* |
| * Retrieve @GPtrArray for global property defined with options |
| * other than "-global". These are generally used for syntactic |
| * sugar and legacy command line options. |
| */ |
| void object_register_sugar_prop(const char *driver, const char *prop, |
| const char *value, bool optional) |
| { |
| GlobalProperty *g; |
| if (!object_compat_props[2]) { |
| object_compat_props[2] = g_ptr_array_new(); |
| } |
| g = g_new0(GlobalProperty, 1); |
| g->driver = g_strdup(driver); |
| g->property = g_strdup(prop); |
| g->value = g_strdup(value); |
| g->optional = optional; |
| g_ptr_array_add(object_compat_props[2], g); |
| } |
| |
| /* |
| * Set machine's global property defaults to @compat_props. |
| * May be called at most once. |
| */ |
| void object_set_machine_compat_props(GPtrArray *compat_props) |
| { |
| assert(!object_compat_props[1]); |
| object_compat_props[1] = compat_props; |
| } |
| |
| /* |
| * Set accelerator's global property defaults to @compat_props. |
| * May be called at most once. |
| */ |
| void object_set_accelerator_compat_props(GPtrArray *compat_props) |
| { |
| assert(!object_compat_props[0]); |
| object_compat_props[0] = compat_props; |
| } |
| |
| void object_apply_compat_props(Object *obj) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(object_compat_props); i++) { |
| object_apply_global_props(obj, object_compat_props[i], |
| i == 2 ? &error_fatal : &error_abort); |
| } |
| } |
| |
| static void object_class_property_init_all(Object *obj) |
| { |
| ObjectPropertyIterator iter; |
| ObjectProperty *prop; |
| |
| object_class_property_iter_init(&iter, object_get_class(obj)); |
| while ((prop = object_property_iter_next(&iter))) { |
| if (prop->init) { |
| prop->init(obj, prop); |
| } |
| } |
| } |
| |
| static void object_initialize_with_type(Object *obj, size_t size, TypeImpl *type) |
| { |
| 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); |
| object_class_property_init_all(obj); |
| obj->properties = g_hash_table_new_full(g_str_hash, g_str_equal, |
| NULL, object_property_free); |
| 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); |
| |
| #ifdef CONFIG_MODULES |
| if (!type) { |
| module_load_qom_one(typename); |
| type = type_get_by_name(typename); |
| } |
| #endif |
| if (!type) { |
| error_report("missing object type '%s'", typename); |
| abort(); |
| } |
| |
| object_initialize_with_type(data, size, type); |
| } |
| |
| bool object_initialize_child_with_props(Object *parentobj, |
| const char *propname, |
| void *childobj, size_t size, |
| const char *type, |
| Error **errp, ...) |
| { |
| va_list vargs; |
| bool ok; |
| |
| va_start(vargs, errp); |
| ok = object_initialize_child_with_propsv(parentobj, propname, |
| childobj, size, type, errp, |
| vargs); |
| va_end(vargs); |
| return ok; |
| } |
| |
| bool object_initialize_child_with_propsv(Object *parentobj, |
| const char *propname, |
| void *childobj, size_t size, |
| const char *type, |
| Error **errp, va_list vargs) |
| { |
| bool ok = false; |
| Object *obj; |
| UserCreatable *uc; |
| |
| object_initialize(childobj, size, type); |
| obj = OBJECT(childobj); |
| |
| if (!object_set_propv(obj, errp, vargs)) { |
| goto out; |
| } |
| |
| object_property_add_child(parentobj, propname, obj); |
| |
| uc = (UserCreatable *)object_dynamic_cast(obj, TYPE_USER_CREATABLE); |
| if (uc) { |
| if (!user_creatable_complete(uc, errp)) { |
| object_unparent(obj); |
| goto out; |
| } |
| } |
| |
| ok = true; |
| |
| out: |
| /* |
| * We want @obj's reference to be 1 on success, 0 on failure. |
| * On success, it's 2: one taken by object_initialize(), and one |
| * by object_property_add_child(). |
| * On failure in object_initialize() or earlier, it's 1. |
| * On failure afterwards, it's also 1: object_unparent() releases |
| * the reference taken by object_property_add_child(). |
| */ |
| object_unref(obj); |
| return ok; |
| } |
| |
| void object_initialize_child_internal(Object *parent, |
| const char *propname, |
| void *child, size_t size, |
| const char *type) |
| { |
| object_initialize_child_with_props(parent, propname, child, size, type, |
| &error_abort, NULL); |
| } |
| |
| static inline bool object_property_is_child(ObjectProperty *prop) |
| { |
| return strstart(prop->type, "child<", NULL); |
| } |
| |
| static void object_property_del_all(Object *obj) |
| { |
| g_autoptr(GHashTable) done = g_hash_table_new(NULL, NULL); |
| ObjectProperty *prop; |
| ObjectPropertyIterator iter; |
| bool released; |
| |
| do { |
| released = false; |
| object_property_iter_init(&iter, obj); |
| while ((prop = object_property_iter_next(&iter)) != NULL) { |
| if (g_hash_table_add(done, prop)) { |
| if (prop->release) { |
| prop->release(obj, prop->name, prop->opaque); |
| released = true; |
| break; |
| } |
| } |
| } |
| } while (released); |
| |
| g_hash_table_unref(obj->properties); |
| } |
| |
| static void object_property_del_child(Object *obj, Object *child) |
| { |
| ObjectProperty *prop; |
| GHashTableIter iter; |
| gpointer key, value; |
| |
| g_hash_table_iter_init(&iter, obj->properties); |
| while (g_hash_table_iter_next(&iter, &key, &value)) { |
| prop = value; |
| if (object_property_is_child(prop) && prop->opaque == child) { |
| if (prop->release) { |
| prop->release(obj, prop->name, prop->opaque); |
| prop->release = NULL; |
| } |
| break; |
| } |
| } |
| g_hash_table_iter_init(&iter, obj->properties); |
| while (g_hash_table_iter_next(&iter, &key, &value)) { |
| prop = value; |
| if (object_property_is_child(prop) && prop->opaque == child) { |
| g_hash_table_iter_remove(&iter); |
| break; |
| } |
| } |
| } |
| |
| void object_unparent(Object *obj) |
| { |
| if (obj->parent) { |
| object_property_del_child(obj->parent, obj); |
| } |
| } |
| |
| 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); |
| g_assert(obj->parent == NULL); |
| if (obj->free) { |
| obj->free(obj); |
| } |
| } |
| |
| /* Find the minimum alignment guaranteed by the system malloc. */ |
| #if __STDC_VERSION__ >= 201112L |
| typddef max_align_t qemu_max_align_t; |
| #else |
| typedef union { |
| long l; |
| void *p; |
| double d; |
| long double ld; |
| } qemu_max_align_t; |
| #endif |
| |
| static Object *object_new_with_type(Type type) |
| { |
| Object *obj; |
| size_t size, align; |
| void (*obj_free)(void *); |
| |
| g_assert(type != NULL); |
| type_initialize(type); |
| |
| size = type->instance_size; |
| align = type->instance_align; |
| |
| /* |
| * Do not use qemu_memalign unless required. Depending on the |
| * implementation, extra alignment implies extra overhead. |
| */ |
| if (likely(align <= __alignof__(qemu_max_align_t))) { |
| obj = g_malloc(size); |
| obj_free = g_free; |
| } else { |
| obj = qemu_memalign(align, size); |
| obj_free = qemu_vfree; |
| } |
| |
| object_initialize_with_type(obj, size, type); |
| obj->free = obj_free; |
| |
| return obj; |
| } |
| |
| Object *object_new_with_class(ObjectClass *klass) |
| { |
| return object_new_with_type(klass->type); |
| } |
| |
| 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; |
| UserCreatable *uc; |
| |
| 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_with_type(klass->type); |
| |
| if (!object_set_propv(obj, errp, vargs)) { |
| goto error; |
| } |
| |
| if (id != NULL) { |
| object_property_add_child(parent, id, obj); |
| } |
| |
| uc = (UserCreatable *)object_dynamic_cast(obj, TYPE_USER_CREATABLE); |
| if (uc) { |
| if (!user_creatable_complete(uc, errp)) { |
| if (id != NULL) { |
| object_unparent(obj); |
| } |
| goto error; |
| } |
| } |
| |
| object_unref(obj); |
| return obj; |
| |
| error: |
| object_unref(obj); |
| return NULL; |
| } |
| |
| |
| bool object_set_props(Object *obj, |
| Error **errp, |
| ...) |
| { |
| va_list vargs; |
| bool ret; |
| |
| va_start(vargs, errp); |
| ret = object_set_propv(obj, errp, vargs); |
| va_end(vargs); |
| |
| return ret; |
| } |
| |
| |
| bool object_set_propv(Object *obj, |
| Error **errp, |
| va_list vargs) |
| { |
| const char *propname; |
| |
| propname = va_arg(vargs, char *); |
| while (propname != NULL) { |
| const char *value = va_arg(vargs, char *); |
| |
| g_assert(value != NULL); |
| if (!object_property_parse(obj, propname, value, errp)) { |
| return false; |
| } |
| propname = va_arg(vargs, char *); |
| } |
| |
| return true; |
| } |
| |
| |
| 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 (qatomic_read(&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++) { |
| qatomic_set(&obj->class->object_cast_cache[i - 1], |
| qatomic_read(&obj->class->object_cast_cache[i])); |
| } |
| qatomic_set(&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 (qatomic_read(&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++) { |
| qatomic_set(&class->class_cast_cache[i - 1], |
| qatomic_read(&class->class_cast_cache[i])); |
| } |
| qatomic_set(&class->class_cast_cache[i - 1], typename); |
| } |
| out: |
| #endif |
| return ret; |
| } |
| |
| const char *object_get_typename(const 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 *module_object_class_by_name(const char *typename) |
| { |
| ObjectClass *oc; |
| |
| oc = object_class_by_name(typename); |
| #ifdef CONFIG_MODULES |
| if (!oc) { |
| module_load_qom_one(typename); |
| oc = object_class_by_name(typename); |
| } |
| #endif |
| return oc; |
| } |
| |
| 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; |
| } |
| |
| static int do_object_child_foreach(Object *obj, |
| int (*fn)(Object *child, void *opaque), |
| void *opaque, bool recurse) |
| { |
| GHashTableIter iter; |
| ObjectProperty *prop; |
| int ret = 0; |
| |
| g_hash_table_iter_init(&iter, obj->properties); |
| while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) { |
| if (object_property_is_child(prop)) { |
| Object *child = prop->opaque; |
| |
| ret = fn(child, opaque); |
| if (ret != 0) { |
| break; |
| } |
| if (recurse) { |
| ret = do_object_child_foreach(child, fn, opaque, true); |
| if (ret != 0) { |
| break; |
| } |
| } |
| } |
| } |
| return ret; |
| } |
| |
| int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque), |
| void *opaque) |
| { |
| return do_object_child_foreach(obj, fn, opaque, false); |
| } |
| |
| int object_child_foreach_recursive(Object *obj, |
| int (*fn)(Object *child, void *opaque), |
| void *opaque) |
| { |
| return do_object_child_foreach(obj, fn, opaque, true); |
| } |
| |
| 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; |
| } |
| |
| static gint object_class_cmp(gconstpointer a, gconstpointer b) |
| { |
| return strcasecmp(object_class_get_name((ObjectClass *)a), |
| object_class_get_name((ObjectClass *)b)); |
| } |
| |
| GSList *object_class_get_list_sorted(const char *implements_type, |
| bool include_abstract) |
| { |
| return g_slist_sort(object_class_get_list(implements_type, include_abstract), |
| object_class_cmp); |
| } |
| |
| Object *object_ref(void *objptr) |
| { |
| Object *obj = OBJECT(objptr); |
| if (!obj) { |
| return NULL; |
| } |
| qatomic_inc(&obj->ref); |
| return obj; |
| } |
| |
| void object_unref(void *objptr) |
| { |
| Object *obj = OBJECT(objptr); |
| if (!obj) { |
| return; |
| } |
| g_assert(obj->ref > 0); |
| |
| /* parent always holds a reference to its children */ |
| if (qatomic_fetch_dec(&obj->ref) == 1) { |
| object_finalize(obj); |
| } |
| } |
| |
| ObjectProperty * |
| object_property_try_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 = NULL; |
| char *name_no_array = g_strdup(name); |
| |
| name_no_array[name_len - 3] = '\0'; |
| for (i = 0; i < INT16_MAX; ++i) { |
| char *full_name = g_strdup_printf("%s[%d]", name_no_array, i); |
| |
| ret = object_property_try_add(obj, full_name, type, get, set, |
| release, opaque, NULL); |
| g_free(full_name); |
| if (ret) { |
| break; |
| } |
| } |
| g_free(name_no_array); |
| assert(ret); |
| return ret; |
| } |
| |
| if (object_property_find(obj, name) != NULL) { |
| 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; |
| |
| g_hash_table_insert(obj->properties, prop->name, prop); |
| return prop; |
| } |
| |
| ObjectProperty * |
| object_property_add(Object *obj, const char *name, const char *type, |
| ObjectPropertyAccessor *get, |
| ObjectPropertyAccessor *set, |
| ObjectPropertyRelease *release, |
| void *opaque) |
| { |
| return object_property_try_add(obj, name, type, get, set, release, |
| opaque, &error_abort); |
| } |
| |
| ObjectProperty * |
| object_class_property_add(ObjectClass *klass, |
| const char *name, |
| const char *type, |
| ObjectPropertyAccessor *get, |
| ObjectPropertyAccessor *set, |
| ObjectPropertyRelease *release, |
| void *opaque) |
| { |
| ObjectProperty *prop; |
| |
| assert(!object_class_property_find(klass, name)); |
| |
| 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; |
| |
| g_hash_table_insert(klass->properties, prop->name, prop); |
| |
| return prop; |
| } |
| |
| ObjectProperty *object_property_find(Object *obj, const char *name) |
| { |
| ObjectProperty *prop; |
| ObjectClass *klass = object_get_class(obj); |
| |
| prop = object_class_property_find(klass, name); |
| if (prop) { |
| return prop; |
| } |
| |
| return g_hash_table_lookup(obj->properties, name); |
| } |
| |
| ObjectProperty *object_property_find_err(Object *obj, const char *name, |
| Error **errp) |
| { |
| ObjectProperty *prop = object_property_find(obj, name); |
| if (!prop) { |
| error_setg(errp, "Property '%s.%s' not found", |
| object_get_typename(obj), name); |
| } |
| return prop; |
| } |
| |
| void object_property_iter_init(ObjectPropertyIterator *iter, |
| Object *obj) |
| { |
| g_hash_table_iter_init(&iter->iter, obj->properties); |
| iter->nextclass = object_get_class(obj); |
| } |
| |
| ObjectProperty *object_property_iter_next(ObjectPropertyIterator *iter) |
| { |
| gpointer key, val; |
| while (!g_hash_table_iter_next(&iter->iter, &key, &val)) { |
| if (!iter->nextclass) { |
| return NULL; |
| } |
| g_hash_table_iter_init(&iter->iter, iter->nextclass->properties); |
| iter->nextclass = object_class_get_parent(iter->nextclass); |
| } |
| return val; |
| } |
| |
| void object_class_property_iter_init(ObjectPropertyIterator *iter, |
| ObjectClass *klass) |
| { |
| g_hash_table_iter_init(&iter->iter, klass->properties); |
| iter->nextclass = object_class_get_parent(klass); |
| } |
| |
| ObjectProperty *object_class_property_find(ObjectClass *klass, const char *name) |
| { |
| ObjectClass *parent_klass; |
| |
| parent_klass = object_class_get_parent(klass); |
| if (parent_klass) { |
| ObjectProperty *prop = |
| object_class_property_find(parent_klass, name); |
| if (prop) { |
| return prop; |
| } |
| } |
| |
| return g_hash_table_lookup(klass->properties, name); |
| } |
| |
| ObjectProperty *object_class_property_find_err(ObjectClass *klass, |
| const char *name, |
| Error **errp) |
| { |
| ObjectProperty *prop = object_class_property_find(klass, name); |
| if (!prop) { |
| error_setg(errp, "Property '.%s' not found", name); |
| } |
| return prop; |
| } |
| |
| |
| void object_property_del(Object *obj, const char *name) |
| { |
| ObjectProperty *prop = g_hash_table_lookup(obj->properties, name); |
| |
| if (prop->release) { |
| prop->release(obj, name, prop->opaque); |
| } |
| g_hash_table_remove(obj->properties, name); |
| } |
| |
| bool object_property_get(Object *obj, const char *name, Visitor *v, |
| Error **errp) |
| { |
| Error *err = NULL; |
| ObjectProperty *prop = object_property_find_err(obj, name, errp); |
| |
| if (prop == NULL) { |
| return false; |
| } |
| |
| if (!prop->get) { |
| error_setg(errp, QERR_PERMISSION_DENIED); |
| return false; |
| } |
| prop->get(obj, v, name, prop->opaque, &err); |
| error_propagate(errp, err); |
| return !err; |
| } |
| |
| bool object_property_set(Object *obj, const char *name, Visitor *v, |
| Error **errp) |
| { |
| Error *err = NULL; |
| ObjectProperty *prop = object_property_find_err(obj, name, errp); |
| |
| if (prop == NULL) { |
| return false; |
| } |
| |
| if (!prop->set) { |
| error_setg(errp, QERR_PERMISSION_DENIED); |
| return false; |
| } |
| prop->set(obj, v, name, prop->opaque, &err); |
| error_propagate(errp, err); |
| return !err; |
| } |
| |
| bool object_property_set_str(Object *obj, const char *name, |
| const char *value, Error **errp) |
| { |
| QString *qstr = qstring_from_str(value); |
| bool ok = object_property_set_qobject(obj, name, QOBJECT(qstr), errp); |
| |
| qobject_unref(qstr); |
| return ok; |
| } |
| |
| 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)); |
| } |
| |
| qobject_unref(ret); |
| return retval; |
| } |
| |
| bool object_property_set_link(Object *obj, const char *name, |
| Object *value, Error **errp) |
| { |
| g_autofree char *path = NULL; |
| |
| if (value) { |
| path = object_get_canonical_path(value); |
| } |
| return object_property_set_str(obj, name, path ?: "", 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; |
| } |
| |
| bool object_property_set_bool(Object *obj, const char *name, |
| bool value, Error **errp) |
| { |
| QBool *qbool = qbool_from_bool(value); |
| bool ok = object_property_set_qobject(obj, name, QOBJECT(qbool), errp); |
| |
| qobject_unref(qbool); |
| return ok; |
| } |
| |
| 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); |
| } |
| |
| qobject_unref(ret); |
| return retval; |
| } |
| |
| bool object_property_set_int(Object *obj, const char *name, |
| int64_t value, Error **errp) |
| { |
| QNum *qnum = qnum_from_int(value); |
| bool ok = object_property_set_qobject(obj, name, QOBJECT(qnum), errp); |
| |
| qobject_unref(qnum); |
| return ok; |
| } |
| |
| int64_t object_property_get_int(Object *obj, const char *name, |
| Error **errp) |
| { |
| QObject *ret = object_property_get_qobject(obj, name, errp); |
| QNum *qnum; |
| int64_t retval; |
| |
| if (!ret) { |
| return -1; |
| } |
| |
| qnum = qobject_to(QNum, ret); |
| if (!qnum || !qnum_get_try_int(qnum, &retval)) { |
| error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "int"); |
| retval = -1; |
| } |
| |
| qobject_unref(ret); |
| return retval; |
| } |
| |
| static void object_property_init_defval(Object *obj, ObjectProperty *prop) |
| { |
| Visitor *v = qobject_input_visitor_new(prop->defval); |
| |
| assert(prop->set != NULL); |
| prop->set(obj, v, prop->name, prop->opaque, &error_abort); |
| |
| visit_free(v); |
| } |
| |
| static void object_property_set_default(ObjectProperty *prop, QObject *defval) |
| { |
| assert(!prop->defval); |
| assert(!prop->init); |
| |
| prop->defval = defval; |
| prop->init = object_property_init_defval; |
| } |
| |
| void object_property_set_default_bool(ObjectProperty *prop, bool value) |
| { |
| object_property_set_default(prop, QOBJECT(qbool_from_bool(value))); |
| } |
| |
| void object_property_set_default_str(ObjectProperty *prop, const char *value) |
| { |
| object_property_set_default(prop, QOBJECT(qstring_from_str(value))); |
| } |
| |
| void object_property_set_default_int(ObjectProperty *prop, int64_t value) |
| { |
| object_property_set_default(prop, QOBJECT(qnum_from_int(value))); |
| } |
| |
| void object_property_set_default_uint(ObjectProperty *prop, uint64_t value) |
| { |
| object_property_set_default(prop, QOBJECT(qnum_from_uint(value))); |
| } |
| |
| bool object_property_set_uint(Object *obj, const char *name, |
| uint64_t value, Error **errp) |
| { |
| QNum *qnum = qnum_from_uint(value); |
| bool ok = object_property_set_qobject(obj, name, QOBJECT(qnum), errp); |
| |
| qobject_unref(qnum); |
| return ok; |
| } |
| |
| uint64_t object_property_get_uint(Object *obj, const char *name, |
| Error **errp) |
| { |
| QObject *ret = object_property_get_qobject(obj, name, errp); |
| QNum *qnum; |
| uint64_t retval; |
| |
| if (!ret) { |
| return 0; |
| } |
| qnum = qobject_to(QNum, ret); |
| if (!qnum || !qnum_get_try_uint(qnum, &retval)) { |
| error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "uint"); |
| retval = 0; |
| } |
| |
| qobject_unref(ret); |
| return retval; |
| } |
| |
| typedef struct EnumProperty { |
| const QEnumLookup *lookup; |
| 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) |
| { |
| char *str; |
| int ret; |
| ObjectProperty *prop = object_property_find_err(obj, name, errp); |
| EnumProperty *enumprop; |
| |
| if (prop == NULL) { |
| return -1; |
| } |
| |
| 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 -1; |
| } |
| |
| enumprop = prop->opaque; |
| |
| str = object_property_get_str(obj, name, errp); |
| if (!str) { |
| return -1; |
| } |
| |
| ret = qapi_enum_parse(enumprop->lookup, str, -1, errp); |
| g_free(str); |
| |
| return ret; |
| } |
| |
| bool object_property_parse(Object *obj, const char *name, |
| const char *string, Error **errp) |
| { |
| Visitor *v = string_input_visitor_new(string); |
| bool ok = object_property_set(obj, name, v, errp); |
| |
| visit_free(v); |
| return ok; |
| } |
| |
| char *object_property_print(Object *obj, const char *name, bool human, |
| Error **errp) |
| { |
| Visitor *v; |
| char *string = NULL; |
| |
| v = string_output_visitor_new(human, &string); |
| if (!object_property_get(obj, name, v, errp)) { |
| goto out; |
| } |
| |
| visit_complete(v, &string); |
| |
| out: |
| visit_free(v); |
| return string; |
| } |
| |
| const char *object_property_get_type(Object *obj, const char *name, Error **errp) |
| { |
| ObjectProperty *prop = object_property_find_err(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"); |
| } |
| |
| Object *object_get_internal_root(void) |
| { |
| static Object *internal_root; |
| |
| if (!internal_root) { |
| internal_root = object_new("container"); |
| } |
| |
| return internal_root; |
| } |
| |
| static void object_get_child_property(Object *obj, Visitor *v, |
| const char *name, void *opaque, |
| Error **errp) |
| { |
| Object *child = opaque; |
| char *path; |
| |
| path = object_get_canonical_path(child); |
| visit_type_str(v, name, &path, errp); |
| g_free(path); |
| } |
| |
| static Object *object_resolve_child_property(Object *parent, void *opaque, |
| const char *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); |
| } |
| |
| ObjectProperty * |
| object_property_try_add_child(Object *obj, const char *name, |
| Object *child, Error **errp) |
| { |
| g_autofree char *type = NULL; |
| ObjectProperty *op; |
| |
| assert(!child->parent); |
| |
| type = g_strdup_printf("child<%s>", object_get_typename(child)); |
| |
| op = object_property_try_add(obj, name, type, object_get_child_property, |
| NULL, object_finalize_child_property, |
| child, errp); |
| if (!op) { |
| return NULL; |
| } |
| op->resolve = object_resolve_child_property; |
| object_ref(child); |
| child->parent = obj; |
| return op; |
| } |
| |
| ObjectProperty * |
| object_property_add_child(Object *obj, const char *name, |
| Object *child) |
| { |
| return object_property_try_add_child(obj, name, child, &error_abort); |
| } |
| |
| void object_property_allow_set_link(const Object *obj, const char *name, |
| Object *val, Error **errp) |
| { |
| /* Allow the link to be set, always */ |
| } |
| |
| typedef struct { |
| union { |
| Object **targetp; |
| Object *target; /* if OBJ_PROP_LINK_DIRECT, when holding the pointer */ |
| ptrdiff_t offset; /* if OBJ_PROP_LINK_CLASS */ |
| }; |
| void (*check)(const Object *, const char *, Object *, Error **); |
| ObjectPropertyLinkFlags flags; |
| } LinkProperty; |
| |
| static Object ** |
| object_link_get_targetp(Object *obj, LinkProperty *lprop) |
| { |
| if (lprop->flags & OBJ_PROP_LINK_DIRECT) { |
| return &lprop->target; |
| } else if (lprop->flags & OBJ_PROP_LINK_CLASS) { |
| return (void *)obj + lprop->offset; |
| } else { |
| return lprop->targetp; |
| } |
| } |
| |
| static void object_get_link_property(Object *obj, Visitor *v, |
| const char *name, void *opaque, |
| Error **errp) |
| { |
| LinkProperty *lprop = opaque; |
| Object **targetp = object_link_get_targetp(obj, lprop); |
| char *path; |
| |
| if (*targetp) { |
| path = object_get_canonical_path(*targetp); |
| visit_type_str(v, name, &path, errp); |
| g_free(path); |
| } else { |
| path = (char *)""; |
| visit_type_str(v, name, &path, 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; |
| char *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_setg(errp, "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, |
| const char *name, void *opaque, |
| Error **errp) |
| { |
| Error *local_err = NULL; |
| LinkProperty *prop = opaque; |
| Object **targetp = object_link_get_targetp(obj, prop); |
| Object *old_target = *targetp; |
| Object *new_target; |
| char *path = NULL; |
| |
| if (!visit_type_str(v, name, &path, errp)) { |
| return; |
| } |
| |
| if (*path) { |
| new_target = object_resolve_link(obj, name, path, errp); |
| if (!new_target) { |
| g_free(path); |
| return; |
| } |
| } else { |
| new_target = NULL; |
| } |
| |
| g_free(path); |
| |
| prop->check(obj, name, new_target, &local_err); |
| if (local_err) { |
| error_propagate(errp, local_err); |
| return; |
| } |
| |
| *targetp = new_target; |
| if (prop->flags & OBJ_PROP_LINK_STRONG) { |
| object_ref(new_target); |
| object_unref(old_target); |
| } |
| } |
| |
| static Object *object_resolve_link_property(Object *parent, void *opaque, |
| const char *part) |
| { |
| LinkProperty *lprop = opaque; |
| |
| return *object_link_get_targetp(parent, lprop); |
| } |
| |
| static void object_release_link_property(Object *obj, const char *name, |
| void *opaque) |
| { |
| LinkProperty *prop = opaque; |
| Object **targetp = object_link_get_targetp(obj, prop); |
| |
| if ((prop->flags & OBJ_PROP_LINK_STRONG) && *targetp) { |
| object_unref(*targetp); |
| } |
| if (!(prop->flags & OBJ_PROP_LINK_CLASS)) { |
| g_free(prop); |
| } |
| } |
| |
| static ObjectProperty * |
| object_add_link_prop(Object *obj, const char *name, |
| const char *type, void *ptr, |
| void (*check)(const Object *, const char *, |
| Object *, Error **), |
| ObjectPropertyLinkFlags flags) |
| { |
| LinkProperty *prop = g_malloc(sizeof(*prop)); |
| g_autofree char *full_type = NULL; |
| ObjectProperty *op; |
| |
| if (flags & OBJ_PROP_LINK_DIRECT) { |
| prop->target = ptr; |
| } else { |
| prop->targetp = ptr; |
| } |
| 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); |
| op->resolve = object_resolve_link_property; |
| return op; |
| } |
| |
| ObjectProperty * |
| object_property_add_link(Object *obj, const char *name, |
| const char *type, Object **targetp, |
| void (*check)(const Object *, const char *, |
| Object *, Error **), |
| ObjectPropertyLinkFlags flags) |
| { |
| return object_add_link_prop(obj, name, type, targetp, check, flags); |
| } |
| |
| ObjectProperty * |
| object_class_property_add_link(ObjectClass *oc, |
| const char *name, |
| const char *type, ptrdiff_t offset, |
| void (*check)(const Object *obj, const char *name, |
| Object *val, Error **errp), |
| ObjectPropertyLinkFlags flags) |
| { |
| LinkProperty *prop = g_new0(LinkProperty, 1); |
| char *full_type; |
| ObjectProperty *op; |
| |
| prop->offset = offset; |
| prop->check = check; |
| prop->flags = flags | OBJ_PROP_LINK_CLASS; |
| |
| full_type = g_strdup_printf("link<%s>", type); |
| |
| op = object_class_property_add(oc, name, full_type, |
| object_get_link_property, |
| check ? object_set_link_property : NULL, |
| object_release_link_property, |
| prop); |
| |
| op->resolve = object_resolve_link_property; |
| |
| g_free(full_type); |
| return op; |
| } |
| |
| ObjectProperty * |
| object_property_add_const_link(Object *obj, const char *name, |
| Object *target) |
| { |
| return object_add_link_prop(obj, name, |
| object_get_typename(target), target, |
| NULL, OBJ_PROP_LINK_DIRECT); |
| } |
| |
| const char *object_get_canonical_path_component(const Object *obj) |
| { |
| ObjectProperty *prop = NULL; |
| GHashTableIter iter; |
| |
| if (obj->parent == NULL) { |
| return NULL; |
| } |
| |
| g_hash_table_iter_init(&iter, obj->parent->properties); |
| while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) { |
| if (!object_property_is_child(prop)) { |
| continue; |
| } |
| |
| if (prop->opaque == obj) { |
| return prop->name; |
| } |
| } |
| |
| /* obj had a parent but was not a child, should never happen */ |
| g_assert_not_reached(); |
| return NULL; |
| } |
| |
| char *object_get_canonical_path(const Object *obj) |
| { |
| Object *root = object_get_root(); |
| char *newpath, *path = NULL; |
| |
| if (obj == root) { |
| return g_strdup("/"); |
| } |
| |
| do { |
| const char *component = object_get_canonical_path_component(obj); |
| |
| if (!component) { |
| /* A canonical path must be complete, so discard what was |
| * collected so far. |
| */ |
| g_free(path); |
| return NULL; |
| } |
| |
| newpath = g_strdup_printf("/%s%s", component, path ? path : ""); |
| g_free(path); |
| path = newpath; |
| obj = obj->parent; |
| } while (obj != root); |
| |
| return path; |
| } |
| |
| Object *object_resolve_path_component(Object *parent, const char *part) |
| { |
| ObjectProperty *prop = object_property_find(parent, part); |
| 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, |
| char **parts, |
| const char *typename) |
| { |
| Object *child; |
| |
| if (*parts == NULL) { |
| return object_dynamic_cast(parent, typename); |
| } |
| |
| if (strcmp(*parts, "") == 0) { |
| return object_resolve_abs_path(parent, parts + 1, typename); |
| } |
| |
| child = object_resolve_path_component(parent, *parts); |
| if (!child) { |
| return NULL; |
| } |
| |
| return object_resolve_abs_path(child, parts + 1, typename); |
| } |
| |
| static Object *object_resolve_partial_path(Object *parent, |
| char **parts, |
| const char *typename, |
| bool *ambiguous) |
| { |
| Object *obj; |
| GHashTableIter iter; |
| ObjectProperty *prop; |
| |
| obj = object_resolve_abs_path(parent, parts, typename); |
| |
| g_hash_table_iter_init(&iter, parent->properties); |
| while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) { |
| Object *found; |
| |
| if (!object_property_is_child(prop)) { |
| continue; |
| } |
| |
| found = object_resolve_partial_path(prop->opaque, parts, |
| typename, ambiguous); |
| if (found) { |
| if (obj) { |
| *ambiguous = true; |
| return NULL; |
| } |
| obj = found; |
| } |
| |
| if (*ambiguous) { |
| return NULL; |
| } |
| } |
| |
| return obj; |
| } |
| |
| Object *object_resolve_path_type(const char *path, const char *typename, |
| bool *ambiguousp) |
| { |
| Object *obj; |
| char **parts; |
| |
| parts = g_strsplit(path, "/", 0); |
| assert(parts); |
| |
| if (parts[0] == NULL || strcmp(parts[0], "") != 0) { |
| bool ambiguous = false; |
| obj = object_resolve_partial_path(object_get_root(), parts, |
| typename, &ambiguous); |
| if (ambiguousp) { |
| *ambiguousp = ambiguous; |
| } |
| } else { |
| obj = object_resolve_abs_path(object_get_root(), parts + 1, typename); |
| } |
| |
| 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, const char *name, |
| void *opaque, Error **errp) |
| { |
| StringProperty *prop = opaque; |
| char *value; |
| Error *err = NULL; |
| |
| value = prop->get(obj, &err); |
| if (err) { |
| error_propagate(errp, err); |
| return; |
| } |
| |
| visit_type_str(v, name, &value, errp); |
| g_free(value); |
| } |
| |
| static void property_set_str(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| StringProperty *prop = opaque; |
| char *value; |
| |
| if (!visit_type_str(v, name, &value, errp)) { |
| return; |
| } |
| |
| prop->set(obj, value, errp); |
| g_free(value); |
| } |
| |
| static void property_release_data(Object *obj, const char *name, |
| void *opaque) |
| { |
| g_free(opaque); |
| } |
| |
| ObjectProperty * |
| object_property_add_str(Object *obj, const char *name, |
| char *(*get)(Object *, Error **), |
| void (*set)(Object *, const char *, Error **)) |
| { |
| StringProperty *prop = g_malloc0(sizeof(*prop)); |
| |
| prop->get = get; |
| prop->set = set; |
| |
| return object_property_add(obj, name, "string", |
| get ? property_get_str : NULL, |
| set ? property_set_str : NULL, |
| property_release_data, |
| prop); |
| } |
| |
| ObjectProperty * |
| object_class_property_add_str(ObjectClass *klass, const char *name, |
| char *(*get)(Object *, Error **), |
| void (*set)(Object *, const char *, |
| Error **)) |
| { |
| StringProperty *prop = g_malloc0(sizeof(*prop)); |
| |
| prop->get = get; |
| prop->set = set; |
| |
| return object_class_property_add(klass, name, "string", |
| get ? property_get_str : NULL, |
| set ? property_set_str : NULL, |
| NULL, |
| prop); |
| } |
| |
| typedef struct BoolProperty |
| { |
| bool (*get)(Object *, Error **); |
| void (*set)(Object *, bool, Error **); |
| } BoolProperty; |
| |
| static void property_get_bool(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| BoolProperty *prop = opaque; |
| bool value; |
| Error *err = NULL; |
| |
| value = prop->get(obj, &err); |
| if (err) { |
| error_propagate(errp, err); |
| return; |
| } |
| |
| visit_type_bool(v, name, &value, errp); |
| } |
| |
| static void property_set_bool(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| BoolProperty *prop = opaque; |
| bool value; |
| |
| if (!visit_type_bool(v, name, &value, errp)) { |
| return; |
| } |
| |
| prop->set(obj, value, errp); |
| } |
| |
| ObjectProperty * |
| object_property_add_bool(Object *obj, const char *name, |
| bool (*get)(Object *, Error **), |
| void (*set)(Object *, bool, Error **)) |
| { |
| BoolProperty *prop = g_malloc0(sizeof(*prop)); |
| |
| prop->get = get; |
| prop->set = set; |
| |
| return object_property_add(obj, name, "bool", |
| get ? property_get_bool : NULL, |
| set ? property_set_bool : NULL, |
| property_release_data, |
| prop); |
| } |
| |
| ObjectProperty * |
| object_class_property_add_bool(ObjectClass *klass, const char *name, |
| bool (*get)(Object *, Error **), |
| void (*set)(Object *, bool, Error **)) |
| { |
| BoolProperty *prop = g_malloc0(sizeof(*prop)); |
| |
| prop->get = get; |
| prop->set = set; |
| |
| return object_class_property_add(klass, name, "bool", |
| get ? property_get_bool : NULL, |
| set ? property_set_bool : NULL, |
| NULL, |
| prop); |
| } |
| |
| static void property_get_enum(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| EnumProperty *prop = opaque; |
| int value; |
| Error *err = NULL; |
| |
| value = prop->get(obj, &err); |
| if (err) { |
| error_propagate(errp, err); |
| return; |
| } |
| |
| visit_type_enum(v, name, &value, prop->lookup, errp); |
| } |
| |
| static void property_set_enum(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| EnumProperty *prop = opaque; |
| int value; |
| |
| if (!visit_type_enum(v, name, &value, prop->lookup, errp)) { |
| return; |
| } |
| prop->set(obj, value, errp); |
| } |
| |
| ObjectProperty * |
| object_property_add_enum(Object *obj, const char *name, |
| const char *typename, |
| const QEnumLookup *lookup, |
| int (*get)(Object *, Error **), |
| void (*set)(Object *, int, Error **)) |
| { |
| EnumProperty *prop = g_malloc(sizeof(*prop)); |
| |
| prop->lookup = lookup; |
| prop->get = get; |
| prop->set = set; |
| |
| return object_property_add(obj, name, typename, |
| get ? property_get_enum : NULL, |
| set ? property_set_enum : NULL, |
| property_release_data, |
| prop); |
| } |
| |
| ObjectProperty * |
| object_class_property_add_enum(ObjectClass *klass, const char *name, |
| const char *typename, |
| const QEnumLookup *lookup, |
| int (*get)(Object *, Error **), |
| void (*set)(Object *, int, Error **)) |
| { |
| EnumProperty *prop = g_malloc(sizeof(*prop)); |
| |
| prop->lookup = lookup; |
| prop->get = get; |
| prop->set = set; |
| |
| return object_class_property_add(klass, name, typename, |
| get ? property_get_enum : NULL, |
| set ? property_set_enum : NULL, |
| NULL, |
| prop); |
| } |
| |
| typedef struct TMProperty { |
| void (*get)(Object *, struct tm *, Error **); |
| } TMProperty; |
| |
| static void property_get_tm(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| TMProperty *prop = opaque; |
| Error *err = NULL; |
| struct tm value; |
| |
| prop->get(obj, &value, &err); |
| if (err) { |
| error_propagate(errp, err); |
| return; |
| } |
| |
| if (!visit_start_struct(v, name, NULL, 0, errp)) { |
| return; |
| } |
| if (!visit_type_int32(v, "tm_year", &value.tm_year, errp)) { |
| goto out_end; |
| } |
| if (!visit_type_int32(v, "tm_mon", &value.tm_mon, errp)) { |
| goto out_end; |
| } |
| if (!visit_type_int32(v, "tm_mday", &value.tm_mday, errp)) { |
| goto out_end; |
| } |
| if (!visit_type_int32(v, "tm_hour", &value.tm_hour, errp)) { |
| goto out_end; |
| } |
| if (!visit_type_int32(v, "tm_min", &value.tm_min, errp)) { |
| goto out_end; |
| } |
| if (!visit_type_int32(v, "tm_sec", &value.tm_sec, errp)) { |
| goto out_end; |
| } |
| visit_check_struct(v, errp); |
| out_end: |
| visit_end_struct(v, NULL); |
| } |
| |
| ObjectProperty * |
| object_property_add_tm(Object *obj, const char *name, |
| void (*get)(Object *, struct tm *, Error **)) |
| { |
| TMProperty *prop = g_malloc0(sizeof(*prop)); |
| |
| prop->get = get; |
| |
| return object_property_add(obj, name, "struct tm", |
| get ? property_get_tm : NULL, NULL, |
| property_release_data, |
| prop); |
| } |
| |
| ObjectProperty * |
| object_class_property_add_tm(ObjectClass *klass, const char *name, |
| void (*get)(Object *, struct tm *, Error **)) |
| { |
| TMProperty *prop = g_malloc0(sizeof(*prop)); |
| |
| prop->get = get; |
| |
| return object_class_property_add(klass, name, "struct tm", |
| get ? property_get_tm : NULL, |
| NULL, NULL, prop); |
| } |
| |
| static char *object_get_type(Object *obj, Error **errp) |
| { |
| return g_strdup(object_get_typename(obj)); |
| } |
| |
| static void property_get_uint8_ptr(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| uint8_t value = *(uint8_t *)opaque; |
| visit_type_uint8(v, name, &value, errp); |
| } |
| |
| static void property_set_uint8_ptr(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| uint8_t *field = opaque; |
| uint8_t value; |
| |
| if (!visit_type_uint8(v, name, &value, errp)) { |
| return; |
| } |
| |
| *field = value; |
| } |
| |
| static void property_get_uint16_ptr(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| uint16_t value = *(uint16_t *)opaque; |
| visit_type_uint16(v, name, &value, errp); |
| } |
| |
| static void property_set_uint16_ptr(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| uint16_t *field = opaque; |
| uint16_t value; |
| |
| if (!visit_type_uint16(v, name, &value, errp)) { |
| return; |
| } |
| |
| *field = value; |
| } |
| |
| static void property_get_uint32_ptr(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| uint32_t value = *(uint32_t *)opaque; |
| visit_type_uint32(v, name, &value, errp); |
| } |
| |
| static void property_set_uint32_ptr(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| uint32_t *field = opaque; |
| uint32_t value; |
| |
| if (!visit_type_uint32(v, name, &value, errp)) { |
| return; |
| } |
| |
| *field = value; |
| } |
| |
| static void property_get_uint64_ptr(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| uint64_t value = *(uint64_t *)opaque; |
| visit_type_uint64(v, name, &value, errp); |
| } |
| |
| static void property_set_uint64_ptr(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| uint64_t *field = opaque; |
| uint64_t value; |
| |
| if (!visit_type_uint64(v, name, &value, errp)) { |
| return; |
| } |
| |
| *field = value; |
| } |
| |
| ObjectProperty * |
| object_property_add_uint8_ptr(Object *obj, const char *name, |
| const uint8_t *v, |
| ObjectPropertyFlags flags) |
| { |
| ObjectPropertyAccessor *getter = NULL; |
| ObjectPropertyAccessor *setter = NULL; |
| |
| if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| getter = property_get_uint8_ptr; |
| } |
| |
| if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| setter = property_set_uint8_ptr; |
| } |
| |
| return object_property_add(obj, name, "uint8", |
| getter, setter, NULL, (void *)v); |
| } |
| |
| ObjectProperty * |
| object_class_property_add_uint8_ptr(ObjectClass *klass, const char *name, |
| const uint8_t *v, |
| ObjectPropertyFlags flags) |
| { |
| ObjectPropertyAccessor *getter = NULL; |
| ObjectPropertyAccessor *setter = NULL; |
| |
| if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| getter = property_get_uint8_ptr; |
| } |
| |
| if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| setter = property_set_uint8_ptr; |
| } |
| |
| return object_class_property_add(klass, name, "uint8", |
| getter, setter, NULL, (void *)v); |
| } |
| |
| ObjectProperty * |
| object_property_add_uint16_ptr(Object *obj, const char *name, |
| const uint16_t *v, |
| ObjectPropertyFlags flags) |
| { |
| ObjectPropertyAccessor *getter = NULL; |
| ObjectPropertyAccessor *setter = NULL; |
| |
| if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| getter = property_get_uint16_ptr; |
| } |
| |
| if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| setter = property_set_uint16_ptr; |
| } |
| |
| return object_property_add(obj, name, "uint16", |
| getter, setter, NULL, (void *)v); |
| } |
| |
| ObjectProperty * |
| object_class_property_add_uint16_ptr(ObjectClass *klass, const char *name, |
| const uint16_t *v, |
| ObjectPropertyFlags flags) |
| { |
| ObjectPropertyAccessor *getter = NULL; |
| ObjectPropertyAccessor *setter = NULL; |
| |
| if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| getter = property_get_uint16_ptr; |
| } |
| |
| if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| setter = property_set_uint16_ptr; |
| } |
| |
| return object_class_property_add(klass, name, "uint16", |
| getter, setter, NULL, (void *)v); |
| } |
| |
| ObjectProperty * |
| object_property_add_uint32_ptr(Object *obj, const char *name, |
| const uint32_t *v, |
| ObjectPropertyFlags flags) |
| { |
| ObjectPropertyAccessor *getter = NULL; |
| ObjectPropertyAccessor *setter = NULL; |
| |
| if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| getter = property_get_uint32_ptr; |
| } |
| |
| if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| setter = property_set_uint32_ptr; |
| } |
| |
| return object_property_add(obj, name, "uint32", |
| getter, setter, NULL, (void *)v); |
| } |
| |
| ObjectProperty * |
| object_class_property_add_uint32_ptr(ObjectClass *klass, const char *name, |
| const uint32_t *v, |
| ObjectPropertyFlags flags) |
| { |
| ObjectPropertyAccessor *getter = NULL; |
| ObjectPropertyAccessor *setter = NULL; |
| |
| if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| getter = property_get_uint32_ptr; |
| } |
| |
| if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| setter = property_set_uint32_ptr; |
| } |
| |
| return object_class_property_add(klass, name, "uint32", |
| getter, setter, NULL, (void *)v); |
| } |
| |
| ObjectProperty * |
| object_property_add_uint64_ptr(Object *obj, const char *name, |
| const uint64_t *v, |
| ObjectPropertyFlags flags) |
| { |
| ObjectPropertyAccessor *getter = NULL; |
| ObjectPropertyAccessor *setter = NULL; |
| |
| if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| getter = property_get_uint64_ptr; |
| } |
| |
| if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| setter = property_set_uint64_ptr; |
| } |
| |
| return object_property_add(obj, name, "uint64", |
| getter, setter, NULL, (void *)v); |
| } |
| |
| ObjectProperty * |
| object_class_property_add_uint64_ptr(ObjectClass *klass, const char *name, |
| const uint64_t *v, |
| ObjectPropertyFlags flags) |
| { |
| ObjectPropertyAccessor *getter = NULL; |
| ObjectPropertyAccessor *setter = NULL; |
| |
| if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| getter = property_get_uint64_ptr; |
| } |
| |
| if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| setter = property_set_uint64_ptr; |
| } |
| |
| return object_class_property_add(klass, name, "uint64", |
| getter, setter, NULL, (void *)v); |
| } |
| |
| typedef struct { |
| Object *target_obj; |
| char *target_name; |
| } AliasProperty; |
| |
| static void property_get_alias(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| AliasProperty *prop = opaque; |
| |
| object_property_get(prop->target_obj, prop->target_name, v, errp); |
| } |
| |
| static void property_set_alias(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| AliasProperty *prop = opaque; |
| |
| object_property_set(prop->target_obj, prop->target_name, v, errp); |
| } |
| |
| static Object *property_resolve_alias(Object *obj, void *opaque, |
| const char *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); |
| } |
| |
| ObjectProperty * |
| object_property_add_alias(Object *obj, const char *name, |
| Object *target_obj, const char *target_name) |
| { |
| AliasProperty *prop; |
| ObjectProperty *op; |
| ObjectProperty *target_prop; |
| g_autofree char *prop_type = NULL; |
| |
| target_prop = object_property_find_err(target_obj, target_name, |
| &error_abort); |
| |
| 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); |
| op->resolve = property_resolve_alias; |
| if (target_prop->defval) { |
| op->defval = qobject_ref(target_prop->defval); |
| } |
| |
| object_property_set_description(obj, op->name, |
| target_prop->description); |
| return op; |
| } |
| |
| void object_property_set_description(Object *obj, const char *name, |
| const char *description) |
| { |
| ObjectProperty *op; |
| |
| op = object_property_find_err(obj, name, &error_abort); |
| g_free(op->description); |
| op->description = g_strdup(description); |
| } |
| |
| void object_class_property_set_description(ObjectClass *klass, |
| const char *name, |
| const char *description) |
| { |
| ObjectProperty *op; |
| |
| op = g_hash_table_lookup(klass->properties, name); |
| g_free(op->description); |
| op->description = g_strdup(description); |
| } |
| |
| static void object_class_init(ObjectClass *klass, void *data) |
| { |
| object_class_property_add_str(klass, "type", object_get_type, |
| 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), |
| .class_init = object_class_init, |
| .abstract = true, |
| }; |
| |
| type_interface = type_register_internal(&interface_info); |
| type_register_internal(&object_info); |
| } |
| |
| type_init(register_types) |