BSD: Add support for RTA_LABEL.

diff --git a/src/if-bsd.c b/src/if-bsd.c
index b0987d1a5ab42c943a4a2119f22a099e5a8e4277..4968541df02fe41fbd10eb0e2052cef80138733c 100644 (file)
--- a/src/if-bsd.c
+++ b/src/if-bsd.c
@@ -461,6 +461,9 @@ if_route(unsigned char cmd, const struct rt *rt)
        char *bp = rtmsg.buffer;
        struct sockaddr_dl sdl;
        bool gateway_unspec;
+#ifdef RTA_LABEL
+       struct sockaddr_rtlabel label;
+#endif
 
        assert(rt != NULL);
        ctx = rt->rt_ifp->ctx;
@@ -496,6 +499,9 @@ if_route(unsigned char cmd, const struct rt *rt)
 
                rtm->rtm_flags |= RTF_UP;
                rtm->rtm_addrs |= RTA_GATEWAY;
+#ifdef RTA_LABEL
+               rtm->rtm_addrs |= RTA_LABEL;
+#endif
                if (!(rtm->rtm_flags & RTF_REJECT) &&
                    !sa_is_loopback(&rt->rt_gateway))
                {
@@ -580,6 +586,23 @@ if_route(unsigned char cmd, const struct rt *rt)
        if (rtm->rtm_addrs & RTA_IFA)
                ADDSA(&rt->rt_ifa);
 
+#ifdef RTA_LABEL
+       if (rtm->rtm_addrs & RTA_LABEL) {
+               int len;
+
+               memset(&label, 0, sizeof(label));
+               label.sr_family = AF_UNSPEC;
+               label.sr_len = sizeof(label);
+               len = snprintf(label.sr_label, sizeof(label.sr_label),
+                   PACKAGE " %d", getpid());
+               /* Don't add the label if we failed to create it. */
+               if (len == -1 || (size_t)len > sizeof(label.sr_label))
+                       rtm->rtm_addrs &= ~RTA_LABEL;
+               else
+                       ADDSA((struct sockaddr *)&label);
+       }
+#endif
+
 #undef ADDSA
 
        rtm->rtm_msglen = (unsigned short)(bp - (char *)rtm);