[src/trunk]: src/usr.sbin/rtadvd Use RO_MSGFILTER.

[roy <roy%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f23149236953
branches:  trunk
changeset: 823069:f23149236953
user:      roy <roy%NetBSD.org@localhost>
date:      Tue Apr 11 14:29:23 2017 +0000

description:
Use RO_MSGFILTER.

diffstat:

 usr.sbin/rtadvd/rtadvd.c |  18 +++++++++++++++++-
 1 files changed, 17 insertions(+), 1 deletions(-)

diffs (36 lines):

diff -r f116e49dafc8 -r f23149236953 usr.sbin/rtadvd/rtadvd.c
--- a/usr.sbin/rtadvd/rtadvd.c  Tue Apr 11 14:26:13 2017 +0000
+++ b/usr.sbin/rtadvd/rtadvd.c  Tue Apr 11 14:29:23 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: rtadvd.c,v 1.52 2016/12/16 09:09:38 ozaki-r Exp $      */
+/*     $NetBSD: rtadvd.c,v 1.53 2017/04/11 14:29:23 roy Exp $  */
 /*     $KAME: rtadvd.c,v 1.92 2005/10/17 14:40:02 suz Exp $    */
 
 /*
@@ -1652,10 +1652,26 @@
 static void
 rtsock_open(void)
 {
+#ifdef RO_MSGFILTER
+       unsigned char msgfilter[] = {
+               RTM_ADD, RTM_DELETE,
+               RTM_NEWADDR, RTM_DELADDR,
+#ifdef RTM_IFANNOUNCE
+               RTM_IFANNOUNCE,
+#endif
+               RTM_IFINFO,
+       };
+#endif
+
        if ((rtsock = prog_socket(PF_ROUTE, SOCK_RAW, 0)) < 0) {
                syslog(LOG_ERR, "<%s> socket: %m", __func__);
                exit(1);
        }
+#ifdef RO_MSGFILTER
+       if (setsockopt(rtsock, PF_ROUTE, RO_MSGFILTER,
+           &msgfilter, sizeof(msgfilter) == -1))
+               syslog(LOG_ERR, "<%s> RO_MSGFILTER: %m", __func__);
+#endif
 }
 
 struct rainfo *