From: Roy Marples <roy@marples.name>
Date: Mon, 24 Apr 2017 10:44:15 +0000 (+0100)
Subject: BSD: Add support for RTA_LABEL.
X-Git-Tag: v7.0.0-rc1~16
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=58907cc78da237570c92df3c91fab13c60eb2cde;p=thirdparty%2Fdhcpcd.git

BSD: Add support for RTA_LABEL.
---

diff --git a/src/if-bsd.c b/src/if-bsd.c
index b0987d1a..4968541d 100644
--- 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);