From: Rafael Zalamena <rzalamena@opensourcerouting.org>
Date: Fri, 21 Dec 2018 14:27:44 +0000 (-0200)
Subject: ldpd: add support for FreeBSD IP_BINDANY
X-Git-Tag: frr-6.0.3~1^2
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=16927ecd7537faac212b5de40362e36cc15379e6;p=matthieu%2Ffrr.git

ldpd: add support for FreeBSD IP_BINDANY

Add yet another way to setsockopt a socket to listen to a foreign
address.

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
---

diff --git a/ldpd/socket.c b/ldpd/socket.c
index bebd7a7d61..78a07b1ed4 100644
--- a/ldpd/socket.c
+++ b/ldpd/socket.c
@@ -268,9 +268,18 @@ sock_set_bindany(int fd, int enable)
 		return (-1);
 	}
 	return (0);
+#elif defined(IP_BINDANY)
+	frr_elevate_privs(&ldpd_privs) {
+		if (setsockopt(fd, IPPROTO_IP, IP_BINDANY, &enable, sizeof(int))
+		    < 0) {
+			log_warn("%s: error setting IP_BINDANY", __func__);
+			return (-1);
+		}
+	}
 #else
-	log_warnx("%s: missing SO_BINDANY and IP_FREEBIND, unable to bind "
-	    "to a nonlocal IP address", __func__);
+	log_warnx(
+		"%s: missing SO_BINDANY, IP_FREEBIND and IP_BINDANY, unable to bind to a nonlocal IP address",
+		__func__);
 	return (-1);
 #endif /* HAVE_SO_BINDANY */
 }