Currently, a FOO_lookup is an array of strings terminated by a NULL sentinel. A future patch will generate enums with "holes". NULL-termination will cease to work then. To prepare for that, store the length in the FOO_lookup by wrapping it in a struct and adding a member for the length. The sentinel will be dropped next. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20170822132255.23945-13-marcandre.lureau@redhat.com> [Basically redone] Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1503564371-26090-16-git-send-email-armbru@redhat.com> [Rebased]
2353 lines
60 KiB
C
2353 lines
60 KiB
C
/*
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* QEMU Object Model
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*
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* Copyright IBM, Corp. 2011
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qom/object.h"
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#include "qom/object_interfaces.h"
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#include "qemu/cutils.h"
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#include "qapi/visitor.h"
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#include "qapi-visit.h"
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#include "qapi/string-input-visitor.h"
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#include "qapi/string-output-visitor.h"
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#include "qapi/qmp/qerror.h"
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#include "trace.h"
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/* TODO: replace QObject with a simpler visitor to avoid a dependency
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* of the QOM core on QObject? */
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#include "qom/qom-qobject.h"
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#include "qapi/qmp/qobject.h"
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#include "qapi/qmp/qbool.h"
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#include "qapi/qmp/qstring.h"
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#define MAX_INTERFACES 32
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typedef struct InterfaceImpl InterfaceImpl;
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typedef struct TypeImpl TypeImpl;
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struct InterfaceImpl
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{
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const char *typename;
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};
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struct TypeImpl
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{
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const char *name;
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size_t class_size;
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size_t instance_size;
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void (*class_init)(ObjectClass *klass, void *data);
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void (*class_base_init)(ObjectClass *klass, void *data);
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void (*class_finalize)(ObjectClass *klass, void *data);
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void *class_data;
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void (*instance_init)(Object *obj);
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void (*instance_post_init)(Object *obj);
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void (*instance_finalize)(Object *obj);
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bool abstract;
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const char *parent;
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TypeImpl *parent_type;
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ObjectClass *class;
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int num_interfaces;
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InterfaceImpl interfaces[MAX_INTERFACES];
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};
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static Type type_interface;
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static GHashTable *type_table_get(void)
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{
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static GHashTable *type_table;
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if (type_table == NULL) {
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type_table = g_hash_table_new(g_str_hash, g_str_equal);
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}
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return type_table;
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}
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static bool enumerating_types;
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static void type_table_add(TypeImpl *ti)
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{
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assert(!enumerating_types);
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g_hash_table_insert(type_table_get(), (void *)ti->name, ti);
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}
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static TypeImpl *type_table_lookup(const char *name)
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{
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return g_hash_table_lookup(type_table_get(), name);
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}
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static TypeImpl *type_new(const TypeInfo *info)
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{
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TypeImpl *ti = g_malloc0(sizeof(*ti));
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int i;
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g_assert(info->name != NULL);
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if (type_table_lookup(info->name) != NULL) {
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fprintf(stderr, "Registering `%s' which already exists\n", info->name);
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abort();
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}
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ti->name = g_strdup(info->name);
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ti->parent = g_strdup(info->parent);
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ti->class_size = info->class_size;
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ti->instance_size = info->instance_size;
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ti->class_init = info->class_init;
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ti->class_base_init = info->class_base_init;
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ti->class_finalize = info->class_finalize;
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ti->class_data = info->class_data;
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ti->instance_init = info->instance_init;
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ti->instance_post_init = info->instance_post_init;
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ti->instance_finalize = info->instance_finalize;
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ti->abstract = info->abstract;
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for (i = 0; info->interfaces && info->interfaces[i].type; i++) {
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ti->interfaces[i].typename = g_strdup(info->interfaces[i].type);
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}
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ti->num_interfaces = i;
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return ti;
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}
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static TypeImpl *type_register_internal(const TypeInfo *info)
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{
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TypeImpl *ti;
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ti = type_new(info);
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type_table_add(ti);
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return ti;
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}
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TypeImpl *type_register(const TypeInfo *info)
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{
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assert(info->parent);
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return type_register_internal(info);
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}
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TypeImpl *type_register_static(const TypeInfo *info)
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{
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return type_register(info);
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}
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static TypeImpl *type_get_by_name(const char *name)
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{
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if (name == NULL) {
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return NULL;
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}
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return type_table_lookup(name);
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}
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static TypeImpl *type_get_parent(TypeImpl *type)
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{
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if (!type->parent_type && type->parent) {
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type->parent_type = type_get_by_name(type->parent);
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g_assert(type->parent_type != NULL);
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}
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return type->parent_type;
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}
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static bool type_has_parent(TypeImpl *type)
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{
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return (type->parent != NULL);
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}
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static size_t type_class_get_size(TypeImpl *ti)
|
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{
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if (ti->class_size) {
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return ti->class_size;
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}
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if (type_has_parent(ti)) {
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return type_class_get_size(type_get_parent(ti));
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}
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return sizeof(ObjectClass);
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}
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static size_t type_object_get_size(TypeImpl *ti)
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{
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if (ti->instance_size) {
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return ti->instance_size;
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}
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if (type_has_parent(ti)) {
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return type_object_get_size(type_get_parent(ti));
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}
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return 0;
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}
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size_t object_type_get_instance_size(const char *typename)
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{
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TypeImpl *type = type_get_by_name(typename);
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g_assert(type != NULL);
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return type_object_get_size(type);
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}
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static bool type_is_ancestor(TypeImpl *type, TypeImpl *target_type)
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{
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assert(target_type);
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/* Check if target_type is a direct ancestor of type */
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while (type) {
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if (type == target_type) {
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return true;
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}
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type = type_get_parent(type);
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}
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return false;
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}
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static void type_initialize(TypeImpl *ti);
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static void type_initialize_interface(TypeImpl *ti, TypeImpl *interface_type,
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TypeImpl *parent_type)
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{
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InterfaceClass *new_iface;
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TypeInfo info = { };
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TypeImpl *iface_impl;
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info.parent = parent_type->name;
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info.name = g_strdup_printf("%s::%s", ti->name, interface_type->name);
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info.abstract = true;
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iface_impl = type_new(&info);
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iface_impl->parent_type = parent_type;
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type_initialize(iface_impl);
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g_free((char *)info.name);
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new_iface = (InterfaceClass *)iface_impl->class;
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new_iface->concrete_class = ti->class;
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new_iface->interface_type = interface_type;
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ti->class->interfaces = g_slist_append(ti->class->interfaces,
|
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iface_impl->class);
|
|
}
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static void object_property_free(gpointer data)
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{
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ObjectProperty *prop = data;
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g_free(prop->name);
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g_free(prop->type);
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g_free(prop->description);
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g_free(prop);
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}
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static void type_initialize(TypeImpl *ti)
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{
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TypeImpl *parent;
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if (ti->class) {
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return;
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}
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ti->class_size = type_class_get_size(ti);
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ti->instance_size = type_object_get_size(ti);
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/* Any type with zero instance_size is implicitly abstract.
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* This means interface types are all abstract.
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*/
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if (ti->instance_size == 0) {
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ti->abstract = true;
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}
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ti->class = g_malloc0(ti->class_size);
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parent = type_get_parent(ti);
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if (parent) {
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type_initialize(parent);
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GSList *e;
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int i;
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g_assert_cmpint(parent->class_size, <=, ti->class_size);
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memcpy(ti->class, parent->class, parent->class_size);
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ti->class->interfaces = NULL;
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ti->class->properties = g_hash_table_new_full(
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g_str_hash, g_str_equal, g_free, object_property_free);
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for (e = parent->class->interfaces; e; e = e->next) {
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InterfaceClass *iface = e->data;
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ObjectClass *klass = OBJECT_CLASS(iface);
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type_initialize_interface(ti, iface->interface_type, klass->type);
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}
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for (i = 0; i < ti->num_interfaces; i++) {
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TypeImpl *t = type_get_by_name(ti->interfaces[i].typename);
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for (e = ti->class->interfaces; e; e = e->next) {
|
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TypeImpl *target_type = OBJECT_CLASS(e->data)->type;
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|
|
|
if (type_is_ancestor(target_type, t)) {
|
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break;
|
|
}
|
|
}
|
|
|
|
if (e) {
|
|
continue;
|
|
}
|
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|
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type_initialize_interface(ti, t, t);
|
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}
|
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} else {
|
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ti->class->properties = g_hash_table_new_full(
|
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g_str_hash, g_str_equal, g_free, object_property_free);
|
|
}
|
|
|
|
ti->class->type = ti;
|
|
|
|
while (parent) {
|
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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)) {
|
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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));
|
|
}
|
|
}
|
|
|
|
static void object_initialize_with_type(void *data, size_t size, TypeImpl *type)
|
|
{
|
|
Object *obj = data;
|
|
|
|
g_assert(type != NULL);
|
|
type_initialize(type);
|
|
|
|
g_assert_cmpint(type->instance_size, >=, sizeof(Object));
|
|
g_assert(type->abstract == false);
|
|
g_assert_cmpint(size, >=, type->instance_size);
|
|
|
|
memset(obj, 0, type->instance_size);
|
|
obj->class = type->class;
|
|
object_ref(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);
|
|
|
|
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)
|
|
{
|
|
ObjectProperty *prop;
|
|
GHashTableIter iter;
|
|
gpointer key, value;
|
|
bool released;
|
|
|
|
do {
|
|
released = false;
|
|
g_hash_table_iter_init(&iter, obj->properties);
|
|
while (g_hash_table_iter_next(&iter, &key, &value)) {
|
|
prop = value;
|
|
if (prop->release) {
|
|
prop->release(obj, prop->name, prop->opaque);
|
|
prop->release = NULL;
|
|
released = true;
|
|
break;
|
|
}
|
|
g_hash_table_iter_remove(&iter);
|
|
}
|
|
} while (released);
|
|
|
|
g_hash_table_unref(obj->properties);
|
|
}
|
|
|
|
static void object_property_del_child(Object *obj, Object *child, Error **errp)
|
|
{
|
|
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, 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_cmpint(obj->ref, ==, 0);
|
|
if (obj->free) {
|
|
obj->free(obj);
|
|
}
|
|
}
|
|
|
|
static 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:
|
|
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 (atomic_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++) {
|
|
atomic_set(&obj->class->object_cast_cache[i - 1],
|
|
atomic_read(&obj->class->object_cast_cache[i]));
|
|
}
|
|
atomic_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 (atomic_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++) {
|
|
atomic_set(&class->class_cast_cache[i - 1],
|
|
atomic_read(&class->class_cast_cache[i]));
|
|
}
|
|
atomic_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 *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) {
|
|
do_object_child_foreach(child, fn, opaque, true);
|
|
}
|
|
}
|
|
}
|
|
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;
|
|
}
|
|
|
|
void object_ref(Object *obj)
|
|
{
|
|
if (!obj) {
|
|
return;
|
|
}
|
|
atomic_inc(&obj->ref);
|
|
}
|
|
|
|
void object_unref(Object *obj)
|
|
{
|
|
if (!obj) {
|
|
return;
|
|
}
|
|
g_assert_cmpint(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;
|
|
}
|
|
|
|
if (object_property_find(obj, name, NULL) != 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_class_property_add(ObjectClass *klass,
|
|
const char *name,
|
|
const char *type,
|
|
ObjectPropertyAccessor *get,
|
|
ObjectPropertyAccessor *set,
|
|
ObjectPropertyRelease *release,
|
|
void *opaque,
|
|
Error **errp)
|
|
{
|
|
ObjectProperty *prop;
|
|
|
|
if (object_class_property_find(klass, name, NULL) != NULL) {
|
|
error_setg(errp, "attempt to add duplicate property '%s'"
|
|
" to object (type '%s')", name,
|
|
object_class_get_name(klass));
|
|
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(klass->properties, g_strdup(name), prop);
|
|
|
|
return prop;
|
|
}
|
|
|
|
ObjectProperty *object_property_find(Object *obj, const char *name,
|
|
Error **errp)
|
|
{
|
|
ObjectProperty *prop;
|
|
ObjectClass *klass = object_get_class(obj);
|
|
|
|
prop = object_class_property_find(klass, name, NULL);
|
|
if (prop) {
|
|
return prop;
|
|
}
|
|
|
|
prop = g_hash_table_lookup(obj->properties, name);
|
|
if (prop) {
|
|
return prop;
|
|
}
|
|
|
|
error_setg(errp, "Property '.%s' not found", name);
|
|
return NULL;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
ObjectProperty *object_class_property_find(ObjectClass *klass, const char *name,
|
|
Error **errp)
|
|
{
|
|
ObjectProperty *prop;
|
|
ObjectClass *parent_klass;
|
|
|
|
parent_klass = object_class_get_parent(klass);
|
|
if (parent_klass) {
|
|
prop = object_class_property_find(parent_klass, name, NULL);
|
|
if (prop) {
|
|
return prop;
|
|
}
|
|
}
|
|
|
|
prop = g_hash_table_lookup(klass->properties, name);
|
|
if (!prop) {
|
|
error_setg(errp, "Property '.%s' not found", name);
|
|
}
|
|
return prop;
|
|
}
|
|
|
|
void object_property_del(Object *obj, const char *name, Error **errp)
|
|
{
|
|
ObjectProperty *prop = g_hash_table_lookup(obj->properties, name);
|
|
|
|
if (!prop) {
|
|
error_setg(errp, "Property '.%s' not found", name);
|
|
return;
|
|
}
|
|
|
|
if (prop->release) {
|
|
prop->release(obj, name, prop->opaque);
|
|
}
|
|
g_hash_table_remove(obj->properties, name);
|
|
}
|
|
|
|
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, name, prop->opaque, 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, name, prop->opaque, 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));
|
|
}
|
|
|
|
qobject_decref(ret);
|
|
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);
|
|
}
|
|
|
|
qobject_decref(ret);
|
|
return retval;
|
|
}
|
|
|
|
void object_property_set_int(Object *obj, int64_t value,
|
|
const char *name, Error **errp)
|
|
{
|
|
QNum *qnum = qnum_from_int(value);
|
|
object_property_set_qobject(obj, QOBJECT(qnum), name, errp);
|
|
|
|
QDECREF(qnum);
|
|
}
|
|
|
|
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_decref(ret);
|
|
return retval;
|
|
}
|
|
|
|
void object_property_set_uint(Object *obj, uint64_t value,
|
|
const char *name, Error **errp)
|
|
{
|
|
QNum *qnum = qnum_from_uint(value);
|
|
|
|
object_property_set_qobject(obj, QOBJECT(qnum), name, errp);
|
|
QDECREF(qnum);
|
|
}
|
|
|
|
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_decref(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)
|
|
{
|
|
Error *err = NULL;
|
|
Visitor *v;
|
|
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;
|
|
|
|
v = string_output_visitor_new(false, &str);
|
|
object_property_get(obj, v, name, &err);
|
|
if (err) {
|
|
error_propagate(errp, err);
|
|
visit_free(v);
|
|
return 0;
|
|
}
|
|
visit_complete(v, &str);
|
|
visit_free(v);
|
|
v = string_input_visitor_new(str);
|
|
visit_type_enum(v, name, &ret, enumprop->lookup, errp);
|
|
|
|
g_free(str);
|
|
visit_free(v);
|
|
|
|
return ret;
|
|
}
|
|
|
|
void object_property_get_uint16List(Object *obj, const char *name,
|
|
uint16List **list, Error **errp)
|
|
{
|
|
Error *err = NULL;
|
|
Visitor *v;
|
|
char *str;
|
|
|
|
v = string_output_visitor_new(false, &str);
|
|
object_property_get(obj, v, name, &err);
|
|
if (err) {
|
|
error_propagate(errp, err);
|
|
goto out;
|
|
}
|
|
visit_complete(v, &str);
|
|
visit_free(v);
|
|
v = string_input_visitor_new(str);
|
|
visit_type_uint16List(v, NULL, list, errp);
|
|
|
|
g_free(str);
|
|
out:
|
|
visit_free(v);
|
|
}
|
|
|
|
void object_property_parse(Object *obj, const char *string,
|
|
const char *name, Error **errp)
|
|
{
|
|
Visitor *v = string_input_visitor_new(string);
|
|
object_property_set(obj, v, name, errp);
|
|
visit_free(v);
|
|
}
|
|
|
|
char *object_property_print(Object *obj, const char *name, bool human,
|
|
Error **errp)
|
|
{
|
|
Visitor *v;
|
|
char *string = NULL;
|
|
Error *local_err = NULL;
|
|
|
|
v = string_output_visitor_new(human, &string);
|
|
object_property_get(obj, v, name, &local_err);
|
|
if (local_err) {
|
|
error_propagate(errp, local_err);
|
|
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(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,
|
|
const char *name, void *opaque,
|
|
Error **errp)
|
|
{
|
|
Object *child = opaque;
|
|
gchar *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 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(const Object *obj, const char *name,
|
|
Object *val, Error **errp)
|
|
{
|
|
/* Allow the link to be set, always */
|
|
}
|
|
|
|
typedef struct {
|
|
Object **child;
|
|
void (*check)(const Object *, const char *, Object *, Error **);
|
|
ObjectPropertyLinkFlags flags;
|
|
} LinkProperty;
|
|
|
|
static void object_get_link_property(Object *obj, Visitor *v,
|
|
const char *name, void *opaque,
|
|
Error **errp)
|
|
{
|
|
LinkProperty *lprop = opaque;
|
|
Object **child = lprop->child;
|
|
gchar *path;
|
|
|
|
if (*child) {
|
|
path = object_get_canonical_path(*child);
|
|
visit_type_str(v, name, &path, errp);
|
|
g_free(path);
|
|
} else {
|
|
path = (gchar *)"";
|
|
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;
|
|
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_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 **child = prop->child;
|
|
Object *old_target = *child;
|
|
Object *new_target = NULL;
|
|
char *path = NULL;
|
|
|
|
visit_type_str(v, name, &path, &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)(const 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;
|
|
GHashTableIter iter;
|
|
|
|
g_assert(obj);
|
|
g_assert(obj->parent != 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 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;
|
|
GHashTableIter iter;
|
|
ObjectProperty *prop;
|
|
|
|
obj = object_resolve_abs_path(parent, parts, typename, 0);
|
|
|
|
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;
|
|
gchar **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, 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, 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;
|
|
Error *local_err = NULL;
|
|
|
|
visit_type_str(v, name, &value, &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);
|
|
}
|
|
}
|
|
|
|
void object_class_property_add_str(ObjectClass *klass, 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_class_property_add(klass, 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, 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;
|
|
Error *local_err = NULL;
|
|
|
|
visit_type_bool(v, name, &value, &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);
|
|
}
|
|
}
|
|
|
|
void object_class_property_add_bool(ObjectClass *klass, 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_class_property_add(klass, 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, 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;
|
|
Error *err = NULL;
|
|
|
|
visit_type_enum(v, name, &value, prop->lookup, &err);
|
|
if (err) {
|
|
error_propagate(errp, err);
|
|
return;
|
|
}
|
|
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 QEnumLookup *lookup,
|
|
int (*get)(Object *, Error **),
|
|
void (*set)(Object *, int, Error **),
|
|
Error **errp)
|
|
{
|
|
Error *local_err = NULL;
|
|
EnumProperty *prop = g_malloc(sizeof(*prop));
|
|
|
|
prop->lookup = lookup;
|
|
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);
|
|
}
|
|
}
|
|
|
|
void 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 **),
|
|
Error **errp)
|
|
{
|
|
Error *local_err = NULL;
|
|
EnumProperty *prop = g_malloc(sizeof(*prop));
|
|
|
|
prop->lookup = lookup;
|
|
prop->get = get;
|
|
prop->set = set;
|
|
|
|
object_class_property_add(klass, 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, const char *name,
|
|
void *opaque, Error **errp)
|
|
{
|
|
TMProperty *prop = opaque;
|
|
Error *err = NULL;
|
|
struct tm value;
|
|
|
|
prop->get(obj, &value, &err);
|
|
if (err) {
|
|
goto out;
|
|
}
|
|
|
|
visit_start_struct(v, name, NULL, 0, &err);
|
|
if (err) {
|
|
goto out;
|
|
}
|
|
visit_type_int32(v, "tm_year", &value.tm_year, &err);
|
|
if (err) {
|
|
goto out_end;
|
|
}
|
|
visit_type_int32(v, "tm_mon", &value.tm_mon, &err);
|
|
if (err) {
|
|
goto out_end;
|
|
}
|
|
visit_type_int32(v, "tm_mday", &value.tm_mday, &err);
|
|
if (err) {
|
|
goto out_end;
|
|
}
|
|
visit_type_int32(v, "tm_hour", &value.tm_hour, &err);
|
|
if (err) {
|
|
goto out_end;
|
|
}
|
|
visit_type_int32(v, "tm_min", &value.tm_min, &err);
|
|
if (err) {
|
|
goto out_end;
|
|
}
|
|
visit_type_int32(v, "tm_sec", &value.tm_sec, &err);
|
|
if (err) {
|
|
goto out_end;
|
|
}
|
|
visit_check_struct(v, &err);
|
|
out_end:
|
|
visit_end_struct(v, NULL);
|
|
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);
|
|
}
|
|
}
|
|
|
|
void object_class_property_add_tm(ObjectClass *klass, 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_class_property_add(klass, 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, const char *name,
|
|
void *opaque, Error **errp)
|
|
{
|
|
uint8_t value = *(uint8_t *)opaque;
|
|
visit_type_uint8(v, name, &value, errp);
|
|
}
|
|
|
|
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_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_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);
|
|
}
|
|
|
|
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_class_property_add_uint8_ptr(ObjectClass *klass, const char *name,
|
|
const uint8_t *v, Error **errp)
|
|
{
|
|
object_class_property_add(klass, 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_class_property_add_uint16_ptr(ObjectClass *klass, const char *name,
|
|
const uint16_t *v, Error **errp)
|
|
{
|
|
object_class_property_add(klass, 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_class_property_add_uint32_ptr(ObjectClass *klass, const char *name,
|
|
const uint32_t *v, Error **errp)
|
|
{
|
|
object_class_property_add(klass, 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);
|
|
}
|
|
|
|
void object_class_property_add_uint64_ptr(ObjectClass *klass, const char *name,
|
|
const uint64_t *v, Error **errp)
|
|
{
|
|
object_class_property_add(klass, 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, Visitor *v, const char *name,
|
|
void *opaque, Error **errp)
|
|
{
|
|
AliasProperty *prop = opaque;
|
|
|
|
object_property_get(prop->target_obj, v, prop->target_name, 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, 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);
|
|
}
|
|
|
|
void object_class_property_set_description(ObjectClass *klass,
|
|
const char *name,
|
|
const char *description,
|
|
Error **errp)
|
|
{
|
|
ObjectProperty *op;
|
|
|
|
op = g_hash_table_lookup(klass->properties, name);
|
|
if (!op) {
|
|
error_setg(errp, "Property '.%s' not found", name);
|
|
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)
|