2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/param.h>
30 #include <sys/ioctl.h>
33 #include <netinet/in.h>
40 #include "libifconfig.h"
41 #include "libifconfig_internal.h"
43 static const struct sockaddr_in NULL_SIN;
46 inet_prefixlen(const struct in_addr *addr)
50 x = ffs(ntohl(addr->s_addr));
51 return (x == 0 ? 0 : 33 - x);
55 ifconfig_inet_get_addrinfo(ifconfig_handle_t *h __unused,
56 const char *name __unused, struct ifaddrs *ifa,
57 struct ifconfig_inet_addr *addr)
59 bzero(addr, sizeof(*addr));
62 if (ifa->ifa_addr == NULL) {
65 addr->sin = (struct sockaddr_in *)ifa->ifa_addr;
68 /* Set the destination address */
69 if (ifa->ifa_flags & IFF_POINTOPOINT) {
70 if (ifa->ifa_dstaddr) {
71 addr->dst = (struct sockaddr_in *)ifa->ifa_dstaddr;
73 addr->dst = &NULL_SIN;
77 /* Set the netmask and prefixlen */
78 if (ifa->ifa_netmask) {
79 addr->netmask = (struct sockaddr_in *)ifa->ifa_netmask;
81 addr->netmask = &NULL_SIN;
83 addr->prefixlen = inet_prefixlen(&addr->netmask->sin_addr);
85 /* Set the broadcast */
86 if (ifa->ifa_flags & IFF_BROADCAST) {
87 addr->broadcast = (struct sockaddr_in *)ifa->ifa_broadaddr;
92 addr->vhid = ((struct if_data *)ifa->ifa_data)->ifi_vhid;