diff options
Diffstat (limited to 'sbin/route/route.c')
| -rw-r--r-- | sbin/route/route.c | 44 |
1 files changed, 43 insertions, 1 deletions
diff --git a/sbin/route/route.c b/sbin/route/route.c index b2d1eb8..a823569 100644 --- a/sbin/route/route.c +++ b/sbin/route/route.c @@ -43,7 +43,7 @@ static const char copyright[] = static char sccsid[] = "@(#)route.c 8.3 (Berkeley) 3/19/94"; */ static const char rcsid[] = - "$Id: route.c,v 1.10 1996/07/23 01:18:47 julian Exp $"; + "$Id: route.c,v 1.11 1996/07/23 22:00:14 julian Exp $"; #endif /* not lint */ #include <sys/param.h> @@ -827,6 +827,48 @@ getaddr(which, s, hpp) break; case RTA_GATEWAY: su = &so_gate; + if (iflag) { + #define MAX_IFACES 400 + int sock; + struct ifreq iflist[MAX_IFACES]; + struct ifconf ifconf; + struct ifreq *ifr, *ifr_end; + struct sockaddr_dl *dl, *sdl = NULL; + + /* Get socket */ + if ((sock = socket(PF_INET, SOCK_DGRAM, 0)) < 0) + err(1, "socket"); + + /* Get interface list */ + ifconf.ifc_req = iflist; + ifconf.ifc_len = sizeof(iflist); + if (ioctl(sock, SIOCGIFCONF, &ifconf) < 0) + err(1, "ioctl(SIOCGIFCONF)"); + close(sock); + + /* Look for this interface in the list */ + for (ifr = ifconf.ifc_req, + ifr_end = (struct ifreq *) + (ifconf.ifc_buf + ifconf.ifc_len); + ifr < ifr_end; + ifr = (struct ifreq *) ((char *) &ifr->ifr_addr + + ifr->ifr_addr.sa_len)) { + dl = (struct sockaddr_dl *)&ifr->ifr_addr; + if (ifr->ifr_addr.sa_family == AF_LINK + && (ifr->ifr_flags & IFF_POINTOPOINT) + && !strncmp(s, dl->sdl_data, dl->sdl_nlen) + && s[dl->sdl_nlen] == 0) { + sdl = dl; + break; + } + } + + /* If we found it, then use it */ + if (sdl) { + su->sdl = *sdl; + return(1); + } + } su->sa.sa_family = af; break; case RTA_NETMASK: |
