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https://github.com/freebsd/freebsd-src
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97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <errno.h>
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#include <ifaddrs.h>
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#include <string.h>
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#include <strings.h>
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#include "libifconfig.h"
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#include "libifconfig_internal.h"
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static const struct sockaddr_in NULL_SIN;
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static int
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inet_prefixlen(const struct in_addr *addr)
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{
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int x;
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x = ffs(ntohl(addr->s_addr));
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return (x == 0 ? 0 : 33 - x);
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}
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int
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ifconfig_inet_get_addrinfo(ifconfig_handle_t *h __unused,
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const char *name __unused, struct ifaddrs *ifa,
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struct ifconfig_inet_addr *addr)
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{
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bzero(addr, sizeof(*addr));
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/* Set the address */
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if (ifa->ifa_addr == NULL) {
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return (-1);
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} else {
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addr->sin = (struct sockaddr_in *)ifa->ifa_addr;
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}
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/* Set the destination address */
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if (ifa->ifa_flags & IFF_POINTOPOINT) {
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if (ifa->ifa_dstaddr) {
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addr->dst = (struct sockaddr_in *)ifa->ifa_dstaddr;
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} else {
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addr->dst = &NULL_SIN;
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}
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}
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/* Set the netmask and prefixlen */
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if (ifa->ifa_netmask) {
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addr->netmask = (struct sockaddr_in *)ifa->ifa_netmask;
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} else {
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addr->netmask = &NULL_SIN;
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}
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addr->prefixlen = inet_prefixlen(&addr->netmask->sin_addr);
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/* Set the broadcast */
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if (ifa->ifa_flags & IFF_BROADCAST) {
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addr->broadcast = (struct sockaddr_in *)ifa->ifa_broadaddr;
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}
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/* Set the vhid */
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if (ifa->ifa_data) {
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addr->vhid = ((struct if_data *)ifa->ifa_data)->ifi_vhid;
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}
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return (0);
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}
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