@@ -1005,7 +1005,7 @@ Chardev *qemu_chardev_new(const char *id, const char *typename,
GMainContext *gcontext,
Error **errp)
{
- Chardev *chr;
+ g_autoptr(Chardev) chr = NULL;
g_autofree char *genid = NULL;
if (!id) {
@@ -1013,6 +1013,11 @@ Chardev *qemu_chardev_new(const char *id, const char *typename,
id = genid;
}
+ if (qemu_chr_find(id)) {
+ error_setg(errp, "Chardev with id '%s' already exists", id);
+ return NULL;
+ }
+
chr = chardev_new(id, typename, backend, gcontext, false, errp);
if (!chr) {
return NULL;
@@ -1020,12 +1025,10 @@ Chardev *qemu_chardev_new(const char *id, const char *typename,
if (!object_property_try_add_child(get_chardevs_root(), id, OBJECT(chr),
errp)) {
- object_unref(OBJECT(chr));
return NULL;
}
- object_unref(OBJECT(chr));
- return chr;
+ return chr; /* returns a shared/unowned reference */
}
ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
@@ -1034,29 +1037,19 @@ ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
ERRP_GUARD();
const ChardevClass *cc;
ChardevReturn *ret;
- g_autoptr(Chardev) chr = NULL;
-
- if (qemu_chr_find(id)) {
- error_setg(errp, "Chardev with id '%s' already exists", id);
- return NULL;
- }
+ Chardev *chr = NULL;
cc = char_get_class(ChardevBackendKind_str(backend->type), errp);
if (!cc) {
goto err;
}
- chr = chardev_new(id, object_class_get_name(OBJECT_CLASS(cc)),
- backend, NULL, false, errp);
+ chr = qemu_chardev_new(id, object_class_get_name(OBJECT_CLASS(cc)),
+ backend, NULL, errp);
if (!chr) {
goto err;
}
- if (!object_property_try_add_child(get_chardevs_root(), id, OBJECT(chr),
- errp)) {
- goto err;
- }
-
ret = g_new0(ChardevReturn, 1);
if (CHARDEV_IS_PTY(chr)) {
ret->pty = g_strdup(chr->filename + 4);