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qom: move user_creatable_add_opts logic to vl.c and QAPIfy it

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Emulators are currently using OptsVisitor (via user_creatable_add_opts)
to parse the -object command line option.  This has one extra feature,
compared to keyval, which is automatic conversion of integers to lists
as well as support for lists as repeated options:

  -object memory-backend-ram,id=pc.ram,size=1048576000,host-nodes=0,policy=bind

So we cannot replace OptsVisitor with keyval right now.  Still, this
patch moves the user_creatable_add_opts logic to vl.c since it is
not needed anywhere else, and makes it go through user_creatable_add_qapi.

In order to minimize code changes, the predicate still takes a string.
This can be changed later to use the ObjectType QAPI enum directly.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210312173547.1283477-3-pbonzini@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Paolo Bonzini 2021-03-12 12:35:46 -05:00 • committed by Kevin Wolf
parent 53c9956d8b
commit bc2f4fcb1d
3 changed files with 57 additions and 119 deletions
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54
qom/object_interfaces.c
View file

@ -141,60 +141,6 @@ void user_creatable_add_qapi(ObjectOptions *options, Error **errp)
visit_free(v);
}
Object *user_creatable_add_opts(QemuOpts *opts, Error **errp)
{
Visitor *v;
QDict *pdict;
Object *obj;
const char *id = qemu_opts_id(opts);
char *type = qemu_opt_get_del(opts, "qom-type");
if (!type) {
error_setg(errp, QERR_MISSING_PARAMETER, "qom-type");
return NULL;
}
if (!id) {
error_setg(errp, QERR_MISSING_PARAMETER, "id");
qemu_opt_set(opts, "qom-type", type, &error_abort);
g_free(type);
return NULL;
}
qemu_opts_set_id(opts, NULL);
pdict = qemu_opts_to_qdict(opts, NULL);
v = opts_visitor_new(opts);
obj = user_creatable_add_type(type, id, pdict, v, errp);
visit_free(v);
qemu_opts_set_id(opts, (char *) id);
qemu_opt_set(opts, "qom-type", type, &error_abort);
g_free(type);
qobject_unref(pdict);
return obj;
}
int user_creatable_add_opts_foreach(void *opaque, QemuOpts *opts, Error **errp)
{
bool (*type_opt_predicate)(const char *, QemuOpts *) = opaque;
Object *obj = NULL;
const char *type;
type = qemu_opt_get(opts, "qom-type");
if (type && type_opt_predicate &&
!type_opt_predicate(type, opts)) {
return 0;
}
obj = user_creatable_add_opts(opts, errp);
if (!obj) {
return -1;
}
object_unref(obj);
return 0;
}
char *object_property_help(const char *name, const char *type,
QObject *defval, const char *description)
{