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qemu/tests/check-qom-proplist.c

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/*
* Copyright (C) 2015 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qom/object.h"
#include "qemu/module.h"
#include "qemu/option.h"
#include "qemu/config-file.h"
#include "qom/object_interfaces.h"
#define TYPE_DUMMY "qemu-dummy"
typedef struct DummyObject DummyObject;
typedef struct DummyObjectClass DummyObjectClass;
#define DUMMY_OBJECT(obj) \
OBJECT_CHECK(DummyObject, (obj), TYPE_DUMMY)
typedef enum DummyAnimal DummyAnimal;
enum DummyAnimal {
DUMMY_FROG,
DUMMY_ALLIGATOR,
DUMMY_PLATYPUS,
DUMMY_LAST,
};
static const char *const dummy_animal_map[DUMMY_LAST + 1] = {
[DUMMY_FROG] = "frog",
[DUMMY_ALLIGATOR] = "alligator",
[DUMMY_PLATYPUS] = "platypus",
[DUMMY_LAST] = NULL,
};
struct DummyObject {
Object parent_obj;
bool bv;
DummyAnimal av;
char *sv;
};
struct DummyObjectClass {
ObjectClass parent_class;
};
static void dummy_set_bv(Object *obj,
bool value,
Error **errp)
{
DummyObject *dobj = DUMMY_OBJECT(obj);
dobj->bv = value;
}
static bool dummy_get_bv(Object *obj,
Error **errp)
{
DummyObject *dobj = DUMMY_OBJECT(obj);
return dobj->bv;
}
static void dummy_set_av(Object *obj,
int value,
Error **errp)
{
DummyObject *dobj = DUMMY_OBJECT(obj);
dobj->av = value;
}
static int dummy_get_av(Object *obj,
Error **errp)
{
DummyObject *dobj = DUMMY_OBJECT(obj);
return dobj->av;
}
static void dummy_set_sv(Object *obj,
const char *value,
Error **errp)
{
DummyObject *dobj = DUMMY_OBJECT(obj);
g_free(dobj->sv);
dobj->sv = g_strdup(value);
}
static char *dummy_get_sv(Object *obj,
Error **errp)
{
DummyObject *dobj = DUMMY_OBJECT(obj);
return g_strdup(dobj->sv);
}
static void dummy_init(Object *obj)
{
object_property_add_bool(obj, "bv",
dummy_get_bv,
dummy_set_bv,
NULL);
}
static void dummy_class_init(ObjectClass *cls, void *data)
{
object_class_property_add_bool(cls, "bv",
dummy_get_bv,
dummy_set_bv,
NULL);
object_class_property_add_str(cls, "sv",
dummy_get_sv,
dummy_set_sv,
NULL);
object_class_property_add_enum(cls, "av",
"DummyAnimal",
dummy_animal_map,
dummy_get_av,
dummy_set_av,
NULL);
}
static void dummy_finalize(Object *obj)
{
DummyObject *dobj = DUMMY_OBJECT(obj);
g_free(dobj->sv);
}
static const TypeInfo dummy_info = {
.name = TYPE_DUMMY,
.parent = TYPE_OBJECT,
.instance_size = sizeof(DummyObject),
.instance_init = dummy_init,
.instance_finalize = dummy_finalize,
.class_size = sizeof(DummyObjectClass),
.class_init = dummy_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_USER_CREATABLE },
{ }
}
};
/*
* The following 3 object classes are used to
* simulate the kind of relationships seen in
* qdev, which result in complex object
* property destruction ordering.
*
* DummyDev has a 'bus' child to a DummyBus
* DummyBus has a 'backend' child to a DummyBackend
* DummyDev has a 'backend' link to DummyBackend
*
* When DummyDev is finalized, it unparents the
* DummyBackend, which unparents the DummyDev
* which deletes the 'backend' link from DummyDev
* to DummyBackend. This illustrates that the
* object_property_del_all() method needs to
* cope with the list of properties being changed
* while it iterates over them.
*/
typedef struct DummyDev DummyDev;
typedef struct DummyDevClass DummyDevClass;
typedef struct DummyBus DummyBus;
typedef struct DummyBusClass DummyBusClass;
typedef struct DummyBackend DummyBackend;
typedef struct DummyBackendClass DummyBackendClass;
#define TYPE_DUMMY_DEV "qemu-dummy-dev"
#define TYPE_DUMMY_BUS "qemu-dummy-bus"
#define TYPE_DUMMY_BACKEND "qemu-dummy-backend"
#define DUMMY_DEV(obj) \
OBJECT_CHECK(DummyDev, (obj), TYPE_DUMMY_DEV)
#define DUMMY_BUS(obj) \
OBJECT_CHECK(DummyBus, (obj), TYPE_DUMMY_BUS)
#define DUMMY_BACKEND(obj) \
OBJECT_CHECK(DummyBackend, (obj), TYPE_DUMMY_BACKEND)
struct DummyDev {
Object parent_obj;
DummyBus *bus;
};
struct DummyDevClass {
ObjectClass parent_class;
};
struct DummyBus {
Object parent_obj;
DummyBackend *backend;
};
struct DummyBusClass {
ObjectClass parent_class;
};
struct DummyBackend {
Object parent_obj;
};
struct DummyBackendClass {
ObjectClass parent_class;
};
static void dummy_dev_finalize(Object *obj)
{
DummyDev *dev = DUMMY_DEV(obj);
object_unref(OBJECT(dev->bus));
}
static void dummy_dev_init(Object *obj)
{
DummyDev *dev = DUMMY_DEV(obj);
DummyBus *bus = DUMMY_BUS(object_new(TYPE_DUMMY_BUS));
DummyBackend *backend = DUMMY_BACKEND(object_new(TYPE_DUMMY_BACKEND));
object_property_add_child(obj, "bus", OBJECT(bus), NULL);
dev->bus = bus;
object_property_add_child(OBJECT(bus), "backend", OBJECT(backend), NULL);
bus->backend = backend;
object_property_add_link(obj, "backend", TYPE_DUMMY_BACKEND,
(Object **)&bus->backend, NULL, 0, NULL);
}
static void dummy_dev_unparent(Object *obj)
{
DummyDev *dev = DUMMY_DEV(obj);
object_unparent(OBJECT(dev->bus));
}
static void dummy_dev_class_init(ObjectClass *klass, void *opaque)
{
klass->unparent = dummy_dev_unparent;
}
static void dummy_bus_finalize(Object *obj)
{
DummyBus *bus = DUMMY_BUS(obj);
object_unref(OBJECT(bus->backend));
}
static void dummy_bus_init(Object *obj)
{
}
static void dummy_bus_unparent(Object *obj)
{
DummyBus *bus = DUMMY_BUS(obj);
object_property_del(obj->parent, "backend", NULL);
object_unparent(OBJECT(bus->backend));
}
static void dummy_bus_class_init(ObjectClass *klass, void *opaque)
{
klass->unparent = dummy_bus_unparent;
}
static void dummy_backend_init(Object *obj)
{
}
static const TypeInfo dummy_dev_info = {
.name = TYPE_DUMMY_DEV,
.parent = TYPE_OBJECT,
.instance_size = sizeof(DummyDev),
.instance_init = dummy_dev_init,
.instance_finalize = dummy_dev_finalize,
.class_size = sizeof(DummyDevClass),
.class_init = dummy_dev_class_init,
};
static const TypeInfo dummy_bus_info = {
.name = TYPE_DUMMY_BUS,
.parent = TYPE_OBJECT,
.instance_size = sizeof(DummyBus),
.instance_init = dummy_bus_init,
.instance_finalize = dummy_bus_finalize,
.class_size = sizeof(DummyBusClass),
.class_init = dummy_bus_class_init,
};
static const TypeInfo dummy_backend_info = {
.name = TYPE_DUMMY_BACKEND,
.parent = TYPE_OBJECT,
.instance_size = sizeof(DummyBackend),
.instance_init = dummy_backend_init,
.class_size = sizeof(DummyBackendClass),
};
static QemuOptsList qemu_object_opts = {
.name = "object",
.implied_opt_name = "qom-type",
.head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head),
.desc = {
{ }
},
};
static void test_dummy_createv(void)
{
Error *err = NULL;
Object *parent = object_get_objects_root();
DummyObject *dobj = DUMMY_OBJECT(
object_new_with_props(TYPE_DUMMY,
parent,
"dummy0",
&err,
"bv", "yes",
"sv", "Hiss hiss hiss",
"av", "platypus",
NULL));
g_assert(err == NULL);
g_assert_cmpstr(dobj->sv, ==, "Hiss hiss hiss");
g_assert(dobj->bv == true);
g_assert(dobj->av == DUMMY_PLATYPUS);
g_assert(object_resolve_path_component(parent, "dummy0")
== OBJECT(dobj));
object_unparent(OBJECT(dobj));
}
static Object *new_helper(Error **errp,
Object *parent,
...)
{
va_list vargs;
Object *obj;
va_start(vargs, parent);
obj = object_new_with_propv(TYPE_DUMMY,
parent,
"dummy0",
errp,
vargs);
va_end(vargs);
return obj;
}
static void test_dummy_createlist(void)
{
Error *err = NULL;
Object *parent = object_get_objects_root();
DummyObject *dobj = DUMMY_OBJECT(
new_helper(&err,
parent,
"bv", "yes",
"sv", "Hiss hiss hiss",
"av", "platypus",
NULL));
g_assert(err == NULL);
g_assert_cmpstr(dobj->sv, ==, "Hiss hiss hiss");
g_assert(dobj->bv == true);
g_assert(dobj->av == DUMMY_PLATYPUS);
g_assert(object_resolve_path_component(parent, "dummy0")
== OBJECT(dobj));
object_unparent(OBJECT(dobj));
}
static void test_dummy_createcmdl(void)
{
QemuOpts *opts;
DummyObject *dobj;
Error *err = NULL;
const char *params = TYPE_DUMMY \
",id=dev0," \
"bv=yes,sv=Hiss hiss hiss,av=platypus";
qemu_add_opts(&qemu_object_opts);
opts = qemu_opts_parse(&qemu_object_opts, params, true, &err);
g_assert(err == NULL);
g_assert(opts);
dobj = DUMMY_OBJECT(user_creatable_add_opts(opts, &err));
g_assert(err == NULL);
g_assert(dobj);
g_assert_cmpstr(dobj->sv, ==, "Hiss hiss hiss");
g_assert(dobj->bv == true);
g_assert(dobj->av == DUMMY_PLATYPUS);
user_creatable_del("dev0", &err);
g_assert(err == NULL);
error_free(err);
/*
* cmdline-parsing via qemu_opts_parse() results in a QemuOpts entry
* corresponding to the Object's ID to be added to the QemuOptsList
* for objects. To avoid having this entry conflict with future
* Objects using the same ID (which can happen in cases where
* qemu_opts_parse() is used to parse the object params, such as
* with hmp_object_add() at the time of this comment), we need to
* check for this in user_creatable_del() and remove the QemuOpts if
* it is present.
*
* The below check ensures this works as expected.
*/
g_assert_null(qemu_opts_find(&qemu_object_opts, "dev0"));
}
static void test_dummy_badenum(void)
{
Error *err = NULL;
Object *parent = object_get_objects_root();
Object *dobj =
object_new_with_props(TYPE_DUMMY,
parent,
"dummy0",
&err,
"bv", "yes",
"sv", "Hiss hiss hiss",
"av", "yeti",
NULL);
g_assert(dobj == NULL);
g_assert(err != NULL);
g_assert_cmpstr(error_get_pretty(err), ==,
"Invalid parameter 'yeti'");
g_assert(object_resolve_path_component(parent, "dummy0")
== NULL);
error_free(err);
}
static void test_dummy_getenum(void)
{
Error *err = NULL;
int val;
Object *parent = object_get_objects_root();
DummyObject *dobj = DUMMY_OBJECT(
object_new_with_props(TYPE_DUMMY,
parent,
"dummy0",
&err,
"av", "platypus",
NULL));
g_assert(err == NULL);
g_assert(dobj->av == DUMMY_PLATYPUS);
val = object_property_get_enum(OBJECT(dobj),
"av",
"DummyAnimal",
&err);
g_assert(err == NULL);
g_assert(val == DUMMY_PLATYPUS);
/* A bad enum type name */
val = object_property_get_enum(OBJECT(dobj),
"av",
"BadAnimal",
&err);
g_assert(err != NULL);
error_free(err);
err = NULL;
/* A non-enum property name */
val = object_property_get_enum(OBJECT(dobj),
"iv",
"DummyAnimal",
&err);
g_assert(err != NULL);
error_free(err);
object_unparent(OBJECT(dobj));
}
static void test_dummy_iterator(void)
{
Object *parent = object_get_objects_root();
DummyObject *dobj = DUMMY_OBJECT(
object_new_with_props(TYPE_DUMMY,
parent,
"dummy0",
&error_abort,
"bv", "yes",
"sv", "Hiss hiss hiss",
"av", "platypus",
NULL));
ObjectProperty *prop;
ObjectPropertyIterator iter;
bool seenbv = false, seensv = false, seenav = false, seentype;
object_property_iter_init(&iter, OBJECT(dobj));
while ((prop = object_property_iter_next(&iter))) {
if (g_str_equal(prop->name, "bv")) {
seenbv = true;
} else if (g_str_equal(prop->name, "sv")) {
seensv = true;
} else if (g_str_equal(prop->name, "av")) {
seenav = true;
} else if (g_str_equal(prop->name, "type")) {
/* This prop comes from the base Object class */
seentype = true;
} else {
g_printerr("Found prop '%s'\n", prop->name);
g_assert_not_reached();
}
}
g_assert(seenbv);
g_assert(seenav);
g_assert(seensv);
g_assert(seentype);
object_unparent(OBJECT(dobj));
}
static void test_dummy_delchild(void)
{
Object *parent = object_get_objects_root();
DummyDev *dev = DUMMY_DEV(
object_new_with_props(TYPE_DUMMY_DEV,
parent,
"dev0",
&error_abort,
NULL));
object_unparent(OBJECT(dev));
}
static void test_qom_partial_path(void)
{
Object *root = object_get_objects_root();
Object *cont1 = container_get(root, "/cont1");
Object *obj1 = object_new(TYPE_DUMMY);
Object *obj2a = object_new(TYPE_DUMMY);
Object *obj2b = object_new(TYPE_DUMMY);
bool ambiguous;
/* Objects created:
* /cont1
* /cont1/obj1
* /cont1/obj2 (obj2a)
* /obj2 (obj2b)
*/
object_property_add_child(cont1, "obj1", obj1, &error_abort);
object_unref(obj1);
object_property_add_child(cont1, "obj2", obj2a, &error_abort);
object_unref(obj2a);
object_property_add_child(root, "obj2", obj2b, &error_abort);
object_unref(obj2b);
ambiguous = false;
g_assert(!object_resolve_path_type("", TYPE_DUMMY, &ambiguous));
g_assert(ambiguous);
g_assert(!object_resolve_path_type("", TYPE_DUMMY, NULL));
ambiguous = false;
g_assert(!object_resolve_path("obj2", &ambiguous));
g_assert(ambiguous);
g_assert(!object_resolve_path("obj2", NULL));
ambiguous = false;
g_assert(object_resolve_path("obj1", &ambiguous) == obj1);
g_assert(!ambiguous);
g_assert(object_resolve_path("obj1", NULL) == obj1);
object_unparent(obj2b);
object_unparent(cont1);
}
int main(int argc, char **argv)
{
g_test_init(&argc, &argv, NULL);
module_call_init(MODULE_INIT_QOM);
type_register_static(&dummy_info);
type_register_static(&dummy_dev_info);
type_register_static(&dummy_bus_info);
type_register_static(&dummy_backend_info);
g_test_add_func("/qom/proplist/createlist", test_dummy_createlist);
g_test_add_func("/qom/proplist/createv", test_dummy_createv);
g_test_add_func("/qom/proplist/createcmdline", test_dummy_createcmdl);
g_test_add_func("/qom/proplist/badenum", test_dummy_badenum);
g_test_add_func("/qom/proplist/getenum", test_dummy_getenum);
g_test_add_func("/qom/proplist/iterator", test_dummy_iterator);
g_test_add_func("/qom/proplist/delchild", test_dummy_delchild);
g_test_add_func("/qom/resolve/partial", test_qom_partial_path);
return g_test_run();
}
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