fd, nlh->nlmsg_len, num, nlh->nlmsg_len, sprintrc(rc));
}
+#if defined NLM_F_CAPPED || defined NLM_F_ACK_TLVS
+static void
+test_ack_flags(const int fd)
+{
+ long rc;
+ struct nlmsghdr nlh = {
+ .nlmsg_len = sizeof(nlh),
+ .nlmsg_type = NLMSG_ERROR,
+ };
+
+#ifdef NLM_F_CAPPED
+ nlh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CAPPED,
+ rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
+ printf("sendto(%d, {len=%u, type=NLMSG_ERROR"
+ ", flags=NLM_F_REQUEST|NLM_F_CAPPED, seq=0, pid=0}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
+#endif
+
+#ifdef NLM_F_ACK_TLVS
+ nlh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK_TLVS;
+ rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
+ printf("sendto(%d, {len=%u, type=NLMSG_ERROR"
+ ", flags=NLM_F_REQUEST|NLM_F_ACK_TLVS, seq=0, pid=0}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
+#endif
+
+#if defined NLM_F_CAPPED && defined NLM_F_ACK_TLVS
+ nlh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CAPPED | NLM_F_ACK_TLVS;
+ rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
+ printf("sendto(%d, {len=%u, type=NLMSG_ERROR"
+ ", flags=NLM_F_REQUEST|NLM_F_CAPPED|NLM_F_ACK_TLVS, seq=0, pid=0}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
+#endif
+}
+#endif
+
int main(void)
{
const int fd = create_nl_socket(NETLINK_SOCK_DIAG);
send_query(fd);
test_nlmsgerr(fd);
test_nlmsg_done(fd);
+#if defined NLM_F_CAPPED || defined NLM_F_ACK_TLVS
+ test_ack_flags(fd);
+#endif
puts("+++ exited with 0 +++");
return 0;