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