/* * QEMU Random Number Generator Backend * * Copyright IBM, Corp. 2012 * * 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/rng.h" #include "qapi/qmp/qerror.h" void rng_backend_request_entropy(RngBackend *s, size_t size, EntropyReceiveFunc *receive_entropy, void *opaque) { RngBackendClass *k = RNG_BACKEND_GET_CLASS(s); if (k->request_entropy) { k->request_entropy(s, size, receive_entropy, opaque); } } void rng_backend_cancel_requests(RngBackend *s) { RngBackendClass *k = RNG_BACKEND_GET_CLASS(s); if (k->cancel_requests) { k->cancel_requests(s); } } static bool rng_backend_prop_get_opened(Object *obj, Error **errp) { RngBackend *s = RNG_BACKEND(obj); return s->opened; } void rng_backend_open(RngBackend *s, Error **errp) { object_property_set_bool(OBJECT(s), true, "opened", errp); } static void rng_backend_prop_set_opened(Object *obj, bool value, Error **errp) { RngBackend *s = RNG_BACKEND(obj); RngBackendClass *k = RNG_BACKEND_GET_CLASS(s); if (value == s->opened) { return; } if (!value && s->opened) { error_set(errp, QERR_PERMISSION_DENIED); return; } if (k->opened) { k->opened(s, errp); } if (!error_is_set(errp)) { s->opened = value; } } static void rng_backend_init(Object *obj) { object_property_add_bool(obj, "opened", rng_backend_prop_get_opened, rng_backend_prop_set_opened, NULL); } static const TypeInfo rng_backend_info = { .name = TYPE_RNG_BACKEND, .parent = TYPE_OBJECT, .instance_size = sizeof(RngBackend), .instance_init = rng_backend_init, .class_size = sizeof(RngBackendClass), .abstract = true, }; static void register_types(void) { type_register_static(&rng_backend_info); } type_init(register_types);