[libgtop] Fix scope6 and prefix6 retrieval on OpenBSD.

[Jasper Lievisse Adriaanse <jasperla src gnome org>]

commit 537dc1bff1cee909d25d5ee8d9360293137247c0
Author: Jasper Lievisse Adriaanse <jasper humppa nl>
Date:   Wed Jun 22 17:26:38 2011 +0200

    Fix scope6 and prefix6 retrieval on OpenBSD.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=652997

 sysdeps/openbsd/netload.c |   38 +++++++++++++++++++++++++++++++++-----
 1 files changed, 33 insertions(+), 5 deletions(-)
---
diff --git a/sysdeps/openbsd/netload.c b/sysdeps/openbsd/netload.c
index 579f951..88a6110 100644
--- a/sysdeps/openbsd/netload.c
+++ b/sysdeps/openbsd/netload.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: netload.c,v 1.3 2011/05/23 19:35:54 jasper Exp $	*/
+/* $OpenBSD: netload.c,v 1.5 2011/06/20 11:48:39 jasper Exp $	*/
 
 /* Copyright (C) 1998-99 Martin Baulig
    This file is part of LibGTop 1.0.
@@ -34,6 +34,8 @@
 #include <net/if_dl.h>
 #include <net/if_types.h>
 
+#include <sys/ioctl.h>
+
 #ifdef HAVE_NET_IF_VAR_H
 #include <net/if_var.h>
 #endif
@@ -198,11 +200,37 @@ glibtop_get_netload_p (glibtop *server, glibtop_netload *buf,
 		buf->flags |= _glibtop_sysdeps_netload_data;
 	    } else if (sa->sa_family == AF_INET6) {
 		struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa;
-
-		memcpy (buf->address6, &sin6->sin6_addr, sizeof (buf->address6));
-		buf->flags |= GLIBTOP_NETLOAD_ADDRESS6;
+		int in6fd;
+
+		memcpy (buf->address6, &sin6->sin6_addr,
+		    sizeof (buf->address6));
+		buf->flags |= (1L << GLIBTOP_NETLOAD_ADDRESS6);
+
+		if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
+			sin6->sin6_scope_id =
+				ntohs(*(u_int16_t *)&sin6->sin6_addr.s6_addr[2]);
+			sin6->sin6_addr.s6_addr[2] = sin6->sin6_addr.s6_addr[3] = 0;
+		}
+
+		buf->scope6 = (guint8) sin6->sin6_scope_id;
+		buf->flags |= (1L << GLIBTOP_NETLOAD_SCOPE6);
+
+		in6fd = socket (AF_INET6, SOCK_DGRAM, 0);
+		if (in6fd >= 0) {
+			struct in6_ifreq ifr;
+
+			memset (&ifr, 0, sizeof (ifr));
+			ifr.ifr_addr = *sin6;
+			g_strlcpy (ifr.ifr_name, interface,
+			    sizeof (ifr.ifr_name));
+			if (ioctl (in6fd, SIOCGIFNETMASK_IN6, (char *) &ifr) >= 0) {
+				memcpy (buf->prefix6, &ifr.ifr_addr.sin6_addr,
+				    sizeof (buf->prefix6));
+				buf->flags |= (1L << GLIBTOP_NETLOAD_PREFIX6);
+			}
+			close (in6fd);
+		}
 	    }
-	    /* FIXME prefix6, scope6 */
 	    ifaddraddr = (u_long) ifaddr.ifa.ifa_list.tqe_next;
 	}
 	return;