int vmstate_register_with_alias_id(DeviceState *dev, int instance_id, const VMStateDescription *vmsd, void *opaque, int alias_id, int required_for_version) { SaveStateEntry *se; /* If this triggers, alias support can be dropped for the vmsd. */ assert(alias_id == -1 || required_for_version >= vmsd->minimum_version_id); se = g_malloc0(sizeof(SaveStateEntry)); se->version_id = vmsd->version_id; se->section_id = savevm_state.global_section_id++; se->opaque = opaque; se->vmsd = vmsd; se->alias_id = alias_id; if (dev) { char *id = qdev_get_dev_path(dev); if (id) { pstrcpy(se->idstr, sizeof(se->idstr), id); pstrcat(se->idstr, sizeof(se->idstr), "/"); g_free(id); se->compat = g_malloc0(sizeof(CompatEntry)); pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), vmsd->name); se->compat->instance_id = instance_id == -1 ? calculate_compat_instance_id(vmsd->name) : instance_id; instance_id = -1; } } pstrcat(se->idstr, sizeof(se->idstr), vmsd->name); if (instance_id == -1) { se->instance_id = calculate_new_instance_id(se->idstr); } else { se->instance_id = instance_id; } assert(!se->compat || se->instance_id == 0); /* add at the end of list */ QTAILQ_INSERT_TAIL(&savevm_state.handlers, se, entry); return 0; }