diff options
| -rw-r--r-- | backends/rng.c | 17 | ||||
| -rw-r--r-- | hw/virtio/virtio-rng.c | 15 | ||||
| -rw-r--r-- | include/qom/object_interfaces.h | 62 | ||||
| -rw-r--r-- | include/sysemu/rng.h | 11 | ||||
| -rw-r--r-- | monitor.c | 4 | ||||
| -rw-r--r-- | qmp.c | 22 | ||||
| -rw-r--r-- | qom/Makefile.objs | 1 | ||||
| -rw-r--r-- | qom/object_interfaces.c | 32 | ||||
| -rw-r--r-- | vl.c | 22 |
9 files changed, 160 insertions, 26 deletions
diff --git a/backends/rng.c b/backends/rng.c index 85cb83f..8b8d5a4 100644 --- a/backends/rng.c +++ b/backends/rng.c @@ -12,6 +12,7 @@ #include "sysemu/rng.h" #include "qapi/qmp/qerror.h" +#include "qom/object_interfaces.h" void rng_backend_request_entropy(RngBackend *s, size_t size, EntropyReceiveFunc *receive_entropy, @@ -40,9 +41,9 @@ static bool rng_backend_prop_get_opened(Object *obj, Error **errp) return s->opened; } -void rng_backend_open(RngBackend *s, Error **errp) +static void rng_backend_complete(UserCreatable *uc, Error **errp) { - object_property_set_bool(OBJECT(s), true, "opened", errp); + object_property_set_bool(OBJECT(uc), true, "opened", errp); } static void rng_backend_prop_set_opened(Object *obj, bool value, Error **errp) @@ -76,13 +77,25 @@ static void rng_backend_init(Object *obj) NULL); } +static void rng_backend_class_init(ObjectClass *oc, void *data) +{ + UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc); + + ucc->complete = rng_backend_complete; +} + 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), + .class_init = rng_backend_class_init, .abstract = true, + .interfaces = (InterfaceInfo[]) { + { TYPE_USER_CREATABLE }, + { } + } }; static void register_types(void) diff --git a/hw/virtio/virtio-rng.c b/hw/virtio/virtio-rng.c index 755fdee..a16e3bc 100644 --- a/hw/virtio/virtio-rng.c +++ b/hw/virtio/virtio-rng.c @@ -15,6 +15,7 @@ #include "hw/virtio/virtio.h" #include "hw/virtio/virtio-rng.h" #include "sysemu/rng.h" +#include "qom/object_interfaces.h" static bool is_guest_ready(VirtIORNG *vrng) { @@ -148,6 +149,14 @@ static void virtio_rng_device_realize(DeviceState *dev, Error **errp) if (vrng->conf.rng == NULL) { vrng->conf.default_backend = RNG_RANDOM(object_new(TYPE_RNG_RANDOM)); + user_creatable_complete(OBJECT(vrng->conf.default_backend), + &local_err); + if (local_err) { + error_propagate(errp, local_err); + object_unref(OBJECT(vrng->conf.default_backend)); + return; + } + object_property_add_child(OBJECT(dev), "default-backend", OBJECT(vrng->conf.default_backend), @@ -166,12 +175,6 @@ static void virtio_rng_device_realize(DeviceState *dev, Error **errp) return; } - rng_backend_open(vrng->rng, &local_err); - if (local_err) { - error_propagate(errp, local_err); - return; - } - vrng->vq = virtio_add_queue(vdev, 8, handle_input); assert(vrng->conf.max_bytes <= INT64_MAX); diff --git a/include/qom/object_interfaces.h b/include/qom/object_interfaces.h new file mode 100644 index 0000000..b792283 --- /dev/null +++ b/include/qom/object_interfaces.h @@ -0,0 +1,62 @@ +#ifndef OBJECT_INTERFACES_H +#define OBJECT_INTERFACES_H + +#include "qom/object.h" + +#define TYPE_USER_CREATABLE "user-creatable" + +#define USER_CREATABLE_CLASS(klass) \ + OBJECT_CLASS_CHECK(UserCreatableClass, (klass), \ + TYPE_USER_CREATABLE) +#define USER_CREATABLE_GET_CLASS(obj) \ + OBJECT_GET_CLASS(UserCreatableClass, (obj), \ + TYPE_USER_CREATABLE) +#define USER_CREATABLE(obj) \ + INTERFACE_CHECK(UserCreatable, (obj), \ + TYPE_USER_CREATABLE) + + +typedef struct UserCreatable { + /* <private> */ + Object Parent; +} UserCreatable; + +/** + * UserCreatableClass: + * @parent_class: the base class + * @complete: callback to be called after @obj's properties are set. + * + * Interface is designed to work with -object/object-add/object_add + * commands. + * Interface is mandatory for objects that are designed to be user + * creatable (i.e. -object/object-add/object_add, will accept only + * objects that inherit this interface). + * + * Interface also provides an optional ability to do the second + * stage * initialization of the object after its properties were + * set. + * + * For objects created without using -object/object-add/object_add, + * @user_creatable_complete() wrapper should be called manually if + * object's type implements USER_CREATABLE interface and needs + * complete() callback to be called. + */ +typedef struct UserCreatableClass { + /* <private> */ + InterfaceClass parent_class; + + /* <public> */ + void (*complete)(UserCreatable *uc, Error **errp); +} UserCreatableClass; + +/** + * user_creatable_complete: + * @obj: the object whose complete() method is called if defined + * @errp: if an error occurs, a pointer to an area to store the error + * + * Wrapper to call complete() method if one of types it's inherited + * from implements USER_CREATABLE interface, otherwise the call does + * nothing. + */ +void user_creatable_complete(Object *obj, Error **errp); +#endif diff --git a/include/sysemu/rng.h b/include/sysemu/rng.h index 7637fac..0a27c9b 100644 --- a/include/sysemu/rng.h +++ b/include/sysemu/rng.h @@ -79,15 +79,4 @@ void rng_backend_request_entropy(RngBackend *s, size_t size, * to stop tracking any request. */ void rng_backend_cancel_requests(RngBackend *s); - -/** - * rng_backend_open: - * @s: the backend to open - * @errp: a pointer to return the #Error object if an error occurs. - * - * This function will open the backend if it is not already open. Calling this - * function on an already opened backend will not result in an error. - */ -void rng_backend_open(RngBackend *s, Error **errp); - #endif @@ -288,8 +288,8 @@ void monitor_flush(Monitor *mon) if (len && !mon->mux_out) { rc = qemu_chr_fe_write(mon->chr, (const uint8_t *) buf, len); - if (rc == len) { - /* all flushed */ + if ((rc < 0 && errno != EAGAIN) || (rc == len)) { + /* all flushed or error */ QDECREF(mon->outbuf); mon->outbuf = qstring_new(); return; @@ -27,6 +27,7 @@ #include "qapi/qmp/qobject.h" #include "qapi/qmp-input-visitor.h" #include "hw/boards.h" +#include "qom/object_interfaces.h" NameInfo *qmp_query_name(Error **errp) { @@ -549,15 +550,28 @@ void object_add(const char *type, const char *id, const QDict *qdict, for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) { object_property_set(obj, v, e->key, &local_err); if (local_err) { - error_propagate(errp, local_err); - object_unref(obj); - return; + goto out; } } } + if (!object_dynamic_cast(obj, TYPE_USER_CREATABLE)) { + error_setg(&local_err, "object '%s' isn't supported by object-add", + id); + goto out; + } + + user_creatable_complete(obj, &local_err); + if (local_err) { + goto out; + } + object_property_add_child(container_get(object_get_root(), "/objects"), - id, obj, errp); + id, obj, &local_err); +out: + if (local_err) { + error_propagate(errp, local_err); + } object_unref(obj); } diff --git a/qom/Makefile.objs b/qom/Makefile.objs index 6a93ac7..985003b 100644 --- a/qom/Makefile.objs +++ b/qom/Makefile.objs @@ -1,2 +1,3 @@ common-obj-y = object.o container.o qom-qobject.o common-obj-y += cpu.o +common-obj-y += object_interfaces.o diff --git a/qom/object_interfaces.c b/qom/object_interfaces.c new file mode 100644 index 0000000..6360818 --- /dev/null +++ b/qom/object_interfaces.c @@ -0,0 +1,32 @@ +#include "qom/object_interfaces.h" +#include "qemu/module.h" + +void user_creatable_complete(Object *obj, Error **errp) +{ + + UserCreatableClass *ucc; + UserCreatable *uc = + (UserCreatable *)object_dynamic_cast(obj, TYPE_USER_CREATABLE); + + if (!uc) { + return; + } + + ucc = USER_CREATABLE_GET_CLASS(uc); + if (ucc->complete) { + ucc->complete(uc, errp); + } +} + +static void register_types(void) +{ + static const TypeInfo uc_interface_info = { + .name = TYPE_USER_CREATABLE, + .parent = TYPE_INTERFACE, + .class_size = sizeof(UserCreatableClass), + }; + + type_register_static(&uc_interface_info); +} + +type_init(register_types) @@ -170,6 +170,7 @@ int main(int argc, char **argv) #include "ui/qemu-spice.h" #include "qapi/string-input-visitor.h" +#include "qom/object_interfaces.h" //#define DEBUG_NET //#define DEBUG_SLIRP @@ -2800,6 +2801,7 @@ static int object_create(QemuOpts *opts, void *opaque) { const char *type = qemu_opt_get(opts, "qom-type"); const char *id = qemu_opts_id(opts); + Error *local_err = NULL; Object *obj; g_assert(type != NULL); @@ -2815,9 +2817,27 @@ static int object_create(QemuOpts *opts, void *opaque) return -1; } + if (!object_dynamic_cast(obj, TYPE_USER_CREATABLE)) { + error_setg(&local_err, "object '%s' isn't supported by -object", + id); + goto out; + } + + user_creatable_complete(obj, &local_err); + if (local_err) { + goto out; + } + object_property_add_child(container_get(object_get_root(), "/objects"), - id, obj, NULL); + id, obj, &local_err); + +out: object_unref(obj); + if (local_err) { + qerror_report_err(local_err); + error_free(local_err); + return -1; + } return 0; } |