static gboolean
connection_compatible (NMDevice *device, NMConnection *connection, GError **error)
{
NMDeviceTunPrivate *priv = NM_DEVICE_TUN_GET_PRIVATE (device);
NMSettingTunMode mode;
NMSettingTun *s_tun;
if (!NM_DEVICE_CLASS (nm_device_tun_parent_class)->connection_compatible (device, connection, error))
return FALSE;
if (!nm_connection_is_type (connection, NM_SETTING_TUN_SETTING_NAME)) {
g_set_error_literal (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_INCOMPATIBLE_CONNECTION,
_("The connection was not a tun connection."));
return FALSE;
}
s_tun = nm_connection_get_setting_tun (connection);
mode = tun_mode_from_string (priv->mode);
if (s_tun && mode != nm_setting_tun_get_mode (s_tun)) {
g_set_error_literal (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_INCOMPATIBLE_CONNECTION,
_("The mode of the device and the connection didn't match"));
return FALSE;
}
return TRUE;
}
static void
update_connection (NMDevice *device, NMConnection *connection)
{
NMDeviceTun *self = NM_DEVICE_TUN (device);
NMSettingTun *s_tun = nm_connection_get_setting_tun (connection);
NMPlatformTunProperties props;
NMSettingTunMode mode;
gint64 user, group;
char *str;
if (!s_tun) {
s_tun = (NMSettingTun *) nm_setting_tun_new ();
nm_connection_add_setting (connection, (NMSetting *) s_tun);
}
if (!nm_platform_link_tun_get_properties (NM_PLATFORM_GET, nm_device_get_ifindex (device), &props)) {
_LOGW (LOGD_HW, "failed to get TUN interface info while updating connection.");
return;
}
mode = tun_mode_from_string (props.mode);
if (mode != nm_setting_tun_get_mode (s_tun))
g_object_set (G_OBJECT (s_tun), NM_SETTING_TUN_MODE, mode, NULL);
user = _nm_utils_ascii_str_to_int64 (nm_setting_tun_get_owner (s_tun), 10, 0, G_MAXINT32, -1);
group = _nm_utils_ascii_str_to_int64 (nm_setting_tun_get_group (s_tun), 10, 0, G_MAXINT32, -1);
if (props.owner != user) {
str = props.owner >= 0 ? g_strdup_printf ("%" G_GINT32_FORMAT, (gint32) props.owner) : NULL;
g_object_set (G_OBJECT (s_tun), NM_SETTING_TUN_OWNER, str, NULL);
g_free (str);
}
if (props.group != group) {
str = props.group >= 0 ? g_strdup_printf ("%" G_GINT32_FORMAT, (gint32) props.group) : NULL;
g_object_set (G_OBJECT (s_tun), NM_SETTING_TUN_GROUP, str, NULL);
g_free (str);
}
if ((!props.no_pi) != nm_setting_tun_get_pi (s_tun))
g_object_set (G_OBJECT (s_tun), NM_SETTING_TUN_PI, !props.no_pi, NULL);
if (props.vnet_hdr != nm_setting_tun_get_vnet_hdr (s_tun))
g_object_set (G_OBJECT (s_tun), NM_SETTING_TUN_VNET_HDR, props.vnet_hdr, NULL);
if (props.multi_queue != nm_setting_tun_get_multi_queue (s_tun))
g_object_set (G_OBJECT (s_tun), NM_SETTING_TUN_MULTI_QUEUE, props.multi_queue, NULL);
}
static NMDevice *
create_device (NMDeviceFactory *factory,
const char *iface,
const NMPlatformLink *plink,
NMConnection *connection,
gboolean *out_ignore)
{
NMSettingTun *s_tun;
NMLinkType link_type = NM_LINK_TYPE_UNKNOWN;
const char *mode;
if (plink) {
link_type = plink->type;
} else if (connection) {
s_tun = nm_connection_get_setting_tun (connection);
if (!s_tun)
return NULL;
switch (nm_setting_tun_get_mode (s_tun)) {
case NM_SETTING_TUN_MODE_TUN:
link_type = NM_LINK_TYPE_TUN;
break;
case NM_SETTING_TUN_MODE_TAP:
link_type = NM_LINK_TYPE_TAP;
break;
case NM_SETTING_TUN_MODE_UNKNOWN:
g_return_val_if_reached (NULL);
}
}
g_return_val_if_fail (link_type != NM_LINK_TYPE_UNKNOWN, NULL);
mode = link_type == NM_LINK_TYPE_TUN ? "tun" : "tap";
return (NMDevice *) g_object_new (NM_TYPE_DEVICE_TUN,
NM_DEVICE_IFACE, iface,
NM_DEVICE_TYPE_DESC, "Tun",
NM_DEVICE_DEVICE_TYPE, NM_DEVICE_TYPE_TUN,
NM_DEVICE_LINK_TYPE, link_type,
NM_DEVICE_TUN_MODE, mode,
NULL);
}
static gboolean
check_connection_compatible (NMDevice *device, NMConnection *connection)
{
NMDeviceTun *self = NM_DEVICE_TUN (device);
NMDeviceTunPrivate *priv = NM_DEVICE_TUN_GET_PRIVATE (self);
NMSettingTunMode mode;
NMSettingTun *s_tun;
gint64 user, group;
if (!NM_DEVICE_CLASS (nm_device_tun_parent_class)->check_connection_compatible (device, connection))
return FALSE;
s_tun = nm_connection_get_setting_tun (connection);
if (!s_tun)
return FALSE;
if (nm_device_is_real (device)) {
mode = tun_mode_from_string (priv->mode);
if (mode != nm_setting_tun_get_mode (s_tun))
return FALSE;
user = _nm_utils_ascii_str_to_int64 (nm_setting_tun_get_owner (s_tun), 10, 0, G_MAXINT32, -1);
group = _nm_utils_ascii_str_to_int64 (nm_setting_tun_get_group (s_tun), 10, 0, G_MAXINT32, -1);
if (user != priv->props.owner)
return FALSE;
if (group != priv->props.group)
return FALSE;
if (nm_setting_tun_get_pi (s_tun) == priv->props.no_pi)
return FALSE;
if (nm_setting_tun_get_vnet_hdr (s_tun) != priv->props.vnet_hdr)
return FALSE;
if (nm_setting_tun_get_multi_queue (s_tun) != priv->props.multi_queue)
return FALSE;
}
return TRUE;
}
static gboolean
create_and_realize (NMDevice *device,
NMConnection *connection,
NMDevice *parent,
const NMPlatformLink **out_plink,
GError **error)
{
const char *iface = nm_device_get_iface (device);
NMPlatformError plerr;
NMSettingTun *s_tun;
gint64 user, group;
s_tun = nm_connection_get_setting_tun (connection);
g_assert (s_tun);
user = _nm_utils_ascii_str_to_int64 (nm_setting_tun_get_owner (s_tun), 10, 0, G_MAXINT32, -1);
group = _nm_utils_ascii_str_to_int64 (nm_setting_tun_get_group (s_tun), 10, 0, G_MAXINT32, -1);
plerr = nm_platform_link_tun_add (NM_PLATFORM_GET, iface,
nm_setting_tun_get_mode (s_tun) == NM_SETTING_TUN_MODE_TAP,
user, group,
nm_setting_tun_get_pi (s_tun),
nm_setting_tun_get_vnet_hdr (s_tun),
nm_setting_tun_get_multi_queue (s_tun),
out_plink);
if (plerr != NM_PLATFORM_ERROR_SUCCESS) {
g_set_error (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_CREATION_FAILED,
"Failed to create TUN/TAP interface '%s' for '%s': %s",
iface,
nm_connection_get_id (connection),
nm_platform_error_to_string (plerr));
return FALSE;
}
return TRUE;
}
