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libnm: let NMSettingIPConfigPrivate be tracked by subclasses

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For our property meta data handling we require that all the meta data is
associated with one GType.

NMSettingIPConfig is a parent class of NMSettingIP[46]Config. Note that
we already have _nm_sett_info_property_override_create_array_ip_config()
because the meta data must be initialized together at one place.

We will require that we can find the offset for properties based on one
offset per type. That is cumbersome, if NMSettingIPConfigPrivate is
private itself.

Simplify that, by internally sharing NMSettingIPConfigPrivate and let
the subclasses embed the private data in their own private data.

Optimally we would simply embed the private struct as field into
NMSettingIPConfig. But that would be an ABI change as that struct
was public before 1.32. Don't change ABI for now, so we have to
awkwardly place it into the subclasses private data.
This commit is contained in:
Thomas Haller
2021-06-28 18:14:04 +02:00
parent 8024279cf7
commit 03dc5ad391
4 changed files with 87 additions and 45 deletions
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59
src/libnm-core-impl/nm-setting-ip-config.c
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@@ -3911,36 +3911,25 @@ NM_GOBJECT_PROPERTIES_DEFINE(NMSettingIPConfig,
PROP_DHCP_IAID,
PROP_DHCP_REJECT_SERVERS, );
typedef struct {
GPtrArray *dns; /* array of IP address strings */
GPtrArray *dns_search; /* array of domain name strings */
GPtrArray *dns_options; /* array of DNS options */
GPtrArray *addresses; /* array of NMIPAddress */
GPtrArray *routes; /* array of NMIPRoute */
GPtrArray *routing_rules;
GArray * dhcp_reject_servers;
char * method;
char * gateway;
char * dhcp_hostname;
char * dhcp_iaid;
gint64 route_metric;
guint dhcp_hostname_flags;
int dns_priority;
int dad_timeout;
int dhcp_timeout;
int required_timeout;
guint32 route_table;
bool ignore_auto_routes : 1;
bool ignore_auto_dns : 1;
bool dhcp_send_hostname : 1;
bool never_default : 1;
bool may_fail : 1;
} NMSettingIPConfigPrivate;
G_DEFINE_ABSTRACT_TYPE(NMSettingIPConfig, nm_setting_ip_config, NM_TYPE_SETTING)
#define NM_SETTING_IP_CONFIG_GET_PRIVATE(o) \
(G_TYPE_INSTANCE_GET_PRIVATE((o), NM_TYPE_SETTING_IP_CONFIG, NMSettingIPConfigPrivate))
static inline NMSettingIPConfigPrivate *
_NM_SETTING_IP_CONFIG_GET_PRIVATE(NMSettingIPConfig *self)
{
NMSettingIPConfigClass *klass;
nm_assert(NM_IS_SETTING_IP_CONFIG(self));
klass = NM_SETTING_IP_CONFIG_GET_CLASS(self);
nm_assert(klass->private_offset < 0);
return (gpointer) (((char *) ((gpointer) self)) + klass->private_offset);
}
#define NM_SETTING_IP_CONFIG_GET_PRIVATE(self) \
_NM_SETTING_IP_CONFIG_GET_PRIVATE( \
NM_GOBJECT_CAST_NON_NULL(NMSettingIPConfig, self, NM_IS_SETTING_IP_CONFIG, NMSetting))
/*****************************************************************************/
@@ -6065,10 +6054,10 @@ set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *ps
/*****************************************************************************/
static void
nm_setting_ip_config_init(NMSettingIPConfig *setting)
void
_nm_setting_ip_config_private_init(gpointer self, NMSettingIPConfigPrivate *priv)
{
NMSettingIPConfigPrivate *priv = NM_SETTING_IP_CONFIG_GET_PRIVATE(setting);
nm_assert(NM_IS_SETTING_IP_CONFIG(self));
priv->dns = g_ptr_array_new_with_free_func(g_free);
priv->dns_search = g_ptr_array_new_with_free_func(g_free);
@@ -6081,6 +6070,12 @@ nm_setting_ip_config_init(NMSettingIPConfig *setting)
priv->required_timeout = -1;
}
static void
nm_setting_ip_config_init(NMSettingIPConfig *setting)
{
/* cannot yet access NM_SETTING_IP_CONFIG_GET_PRIVATE(). */
}
static void
finalize(GObject *object)
{
@@ -6111,8 +6106,6 @@ nm_setting_ip_config_class_init(NMSettingIPConfigClass *klass)
GObjectClass * object_class = G_OBJECT_CLASS(klass);
NMSettingClass *setting_class = NM_SETTING_CLASS(klass);
g_type_class_add_private(klass, sizeof(NMSettingIPConfigPrivate));
object_class->get_property = get_property;
object_class->set_property = set_property;
object_class->finalize = finalize;