diff options
| author | wollman <wollman@FreeBSD.org> | 1995-04-25 19:50:20 +0000 |
|---|---|---|
| committer | wollman <wollman@FreeBSD.org> | 1995-04-25 19:50:20 +0000 |
| commit | 27a554f1ab79fda61d1661cdcb1b207e57c315d1 (patch) | |
| tree | a4730c07631cda1023cce458b4f8eb7ec35c4c47 /sys/netinet/in.c | |
| parent | e4b7887b8f1b6971e7433435c3a4944ce14ca0ca (diff) | |
| download | FreeBSD-src-27a554f1ab79fda61d1661cdcb1b207e57c315d1.zip FreeBSD-src-27a554f1ab79fda61d1661cdcb1b207e57c315d1.tar.gz | |
Disallow half-configured point-to-point interfaces. It's still possible to
get into a half-configured state by using the old-style ioctls;this
may be a feature.
Diffstat (limited to 'sys/netinet/in.c')
| -rw-r--r-- | sys/netinet/in.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/sys/netinet/in.c b/sys/netinet/in.c index 1da3f58..c90cc2c 100644 --- a/sys/netinet/in.c +++ b/sys/netinet/in.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * @(#)in.c 8.2 (Berkeley) 11/15/93 - * $Id: in.c,v 1.10 1995/03/16 18:14:50 bde Exp $ + * $Id: in.c,v 1.11 1995/03/23 18:14:40 wollman Exp $ */ #include <sys/param.h> @@ -202,12 +202,19 @@ in_control(so, cmd, data, ifp) case SIOCAIFADDR: case SIOCDIFADDR: - if (ifra->ifra_addr.sin_family == AF_INET) - for (oia = ia; ia; ia = ia->ia_next) { - if (ia->ia_ifp == ifp && - ia->ia_addr.sin_addr.s_addr == - ifra->ifra_addr.sin_addr.s_addr) - break; + if (ifra->ifra_addr.sin_family == AF_INET) { + for (oia = ia; ia; ia = ia->ia_next) { + if (ia->ia_ifp == ifp && + ia->ia_addr.sin_addr.s_addr == + ifra->ifra_addr.sin_addr.s_addr) + break; + } + if ((ifp->if_flags & IFF_POINTOPOINT) + && (cmd == SIOCAIFADDR) + && (ifra->ifra_dstaddr.sin_addr.s_addr + == INADDR_ANY)) { + return EADDRNOTAVAIL; + } } if (cmd == SIOCDIFADDR && ia == 0) return (EADDRNOTAVAIL); |
