32cad1ffb8
Headers in include/sysemu/ are not only related to system *emulation*, they are also used by virtualization. Rename as system/ which is clearer. Files renamed manually then mechanical change using sed tool. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Tested-by: Lei Yang <leiyang@redhat.com> Message-Id: <20241203172445.28576-1-philmd@linaro.org>
80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
/*
|
|
* QEMU Builtin Random Number Generator Backend
|
|
*
|
|
* 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 "system/rng.h"
|
|
#include "qemu/main-loop.h"
|
|
#include "qemu/guest-random.h"
|
|
#include "qom/object.h"
|
|
#include "system/replay.h"
|
|
|
|
OBJECT_DECLARE_SIMPLE_TYPE(RngBuiltin, RNG_BUILTIN)
|
|
|
|
struct RngBuiltin {
|
|
RngBackend parent;
|
|
QEMUBH *bh;
|
|
};
|
|
|
|
static void rng_builtin_receive_entropy_bh(void *opaque)
|
|
{
|
|
RngBuiltin *s = opaque;
|
|
|
|
while (!QSIMPLEQ_EMPTY(&s->parent.requests)) {
|
|
RngRequest *req = QSIMPLEQ_FIRST(&s->parent.requests);
|
|
|
|
qemu_guest_getrandom_nofail(req->data, req->size);
|
|
|
|
req->receive_entropy(req->opaque, req->data, req->size);
|
|
|
|
rng_backend_finalize_request(&s->parent, req);
|
|
}
|
|
}
|
|
|
|
static void rng_builtin_request_entropy(RngBackend *b, RngRequest *req)
|
|
{
|
|
RngBuiltin *s = RNG_BUILTIN(b);
|
|
|
|
replay_bh_schedule_event(s->bh);
|
|
}
|
|
|
|
static void rng_builtin_init(Object *obj)
|
|
{
|
|
RngBuiltin *s = RNG_BUILTIN(obj);
|
|
|
|
s->bh = qemu_bh_new(rng_builtin_receive_entropy_bh, s);
|
|
}
|
|
|
|
static void rng_builtin_finalize(Object *obj)
|
|
{
|
|
RngBuiltin *s = RNG_BUILTIN(obj);
|
|
|
|
qemu_bh_delete(s->bh);
|
|
}
|
|
|
|
static void rng_builtin_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
RngBackendClass *rbc = RNG_BACKEND_CLASS(klass);
|
|
|
|
rbc->request_entropy = rng_builtin_request_entropy;
|
|
}
|
|
|
|
static const TypeInfo rng_builtin_info = {
|
|
.name = TYPE_RNG_BUILTIN,
|
|
.parent = TYPE_RNG_BACKEND,
|
|
.instance_size = sizeof(RngBuiltin),
|
|
.instance_init = rng_builtin_init,
|
|
.instance_finalize = rng_builtin_finalize,
|
|
.class_init = rng_builtin_class_init,
|
|
};
|
|
|
|
static void register_types(void)
|
|
{
|
|
type_register_static(&rng_builtin_info);
|
|
}
|
|
|
|
type_init(register_types);
|