diff options
| author | Jun-ichiro itojun Hagino <itojun@cvs.openbsd.org> | 2000-02-29 18:25:53 +0000 |
|---|---|---|
| committer | Jun-ichiro itojun Hagino <itojun@cvs.openbsd.org> | 2000-02-29 18:25:53 +0000 |
| commit | a33fa65ed226ba6e40fdf51ad96e55670e799f51 (patch) | |
| tree | d3f5196d0ed8c18817071d35da2adb92ddcdd22e /lib | |
| parent | 36e031c7ab3edb9a631825a86f7f161f1797307d (diff) | |
fix alignment constraint in IPv6 routing header manipulation (ancillary data).
documented in RFC2292.
from: shin@kame.net
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libc/net/rthdr.c | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/lib/libc/net/rthdr.c b/lib/libc/net/rthdr.c index 2dff59668eb..5cd485889bd 100644 --- a/lib/libc/net/rthdr.c +++ b/lib/libc/net/rthdr.c @@ -1,4 +1,4 @@ -/* $OpenBSD: rthdr.c,v 1.1 1999/12/11 08:09:11 itojun Exp $ */ +/* $OpenBSD: rthdr.c,v 1.2 2000/02/29 18:25:52 itojun Exp $ */ /* * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. @@ -63,7 +63,9 @@ inet6_rthdr_init(bp, type) int type; { register struct cmsghdr *ch = (struct cmsghdr *)bp; - register struct ip6_rthdr *rthdr = (struct ip6_rthdr *)(ch + 1); + register struct ip6_rthdr *rthdr; + + rthdr = (struct ip6_rthdr *)CMSG_DATA(ch); ch->cmsg_level = IPPROTO_IPV6; ch->cmsg_type = IPV6_RTHDR; @@ -88,7 +90,9 @@ inet6_rthdr_add(cmsg, addr, flags) const struct in6_addr *addr; u_int flags; { - register struct ip6_rthdr *rthdr = (struct ip6_rthdr *)(cmsg + 1); + register struct ip6_rthdr *rthdr; + + rthdr = (struct ip6_rthdr *)CMSG_DATA(cmsg); switch(rthdr->ip6r_type) { case IPV6_RTHDR_TYPE_0: @@ -135,7 +139,9 @@ inet6_rthdr_lasthop(cmsg, flags) struct cmsghdr *cmsg; unsigned int flags; { - register struct ip6_rthdr *rthdr = (struct ip6_rthdr *)(cmsg + 1); + register struct ip6_rthdr *rthdr; + + rthdr = (struct ip6_rthdr *)CMSG_DATA(cmsg); switch(rthdr->ip6r_type) { case IPV6_RTHDR_TYPE_0: @@ -189,7 +195,9 @@ int inet6_rthdr_segments(cmsg) const struct cmsghdr *cmsg; { - register struct ip6_rthdr *rthdr = (struct ip6_rthdr *)(cmsg + 1); + register struct ip6_rthdr *rthdr; + + rthdr = (struct ip6_rthdr *)CMSG_DATA(cmsg); switch(rthdr->ip6r_type) { case IPV6_RTHDR_TYPE_0: @@ -221,7 +229,9 @@ inet6_rthdr_getaddr(cmsg, index) struct cmsghdr *cmsg; int index; { - register struct ip6_rthdr *rthdr = (struct ip6_rthdr *)(cmsg + 1); + register struct ip6_rthdr *rthdr; + + rthdr = (struct ip6_rthdr *)CMSG_DATA(cmsg); switch(rthdr->ip6r_type) { case IPV6_RTHDR_TYPE_0: @@ -260,7 +270,9 @@ inet6_rthdr_getflags(cmsg, index) const struct cmsghdr *cmsg; int index; { - register struct ip6_rthdr *rthdr = (struct ip6_rthdr *)(cmsg + 1); + register struct ip6_rthdr *rthdr; + + rthdr = (struct ip6_rthdr *)CMSG_DATA(cmsg); switch(rthdr->ip6r_type) { case IPV6_RTHDR_TYPE_0: |