int r;
assert_return(rtnl_message_type_is_link(nlmsg_type), -EINVAL);
- assert_return(nlmsg_type != RTM_DELLINK || index > 0, -EINVAL);
assert_return(ret, -EINVAL);
r = message_new(rtnl, ret, nlmsg_type);
a = b = NULL;
return 0;
}
+
+static int remove_one_veth_link(sd_netlink *rtnl, const char *name) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
+ int r;
+
+ if (isempty(name))
+ return 0;
+
+ r = sd_rtnl_message_new_link(rtnl, &m, RTM_DELLINK, 0);
+ if (r < 0)
+ return log_error_errno(r, "Failed to allocate netlink message: %m");
+
+ r = sd_netlink_message_append_string(m, IFLA_IFNAME, name);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add netlink interface name: %m");
+
+ r = sd_netlink_call(rtnl, m, 0, NULL);
+ if (r == -ENODEV) /* Already gone */
+ return 0;
+ if (r < 0)
+ return log_error_errno(r, "Failed to remove veth interface %s: %m", name);
+
+ return 1;
+}
+
+int remove_veth_links(const char *primary, char **pairs) {
+ _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
+ char **a, **b;
+ int r;
+
+ /* In some cases the kernel might pin the veth links between host and container even after the namespace
+ * died. Hence, let's better remove them explicitly too. */
+
+ if (isempty(primary) && strv_isempty(pairs))
+ return 0;
+
+ r = sd_netlink_open(&rtnl);
+ if (r < 0)
+ return log_error_errno(r, "Failed to connect to netlink: %m");
+
+ remove_one_veth_link(rtnl, primary);
+
+ STRV_FOREACH_PAIR(a, b, pairs)
+ remove_one_veth_link(rtnl, *a);
+
+ return 0;
+}
}
expose_port_flush(arg_expose_ports, &exposed);
+ (void) remove_veth_links(veth_name, arg_network_veth_extra);
}
finish:
}
expose_port_flush(arg_expose_ports, &exposed);
+ (void) remove_veth_links(veth_name, arg_network_veth_extra);
free(arg_directory);
free(arg_template);