mirror of
https://github.com/freebsd/freebsd-src
synced 2024-09-06 09:10:28 +00:00
97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
![]() |
/*
|
||
|
* Copyright (c) 1983, 1993
|
||
|
* The Regents of the University of California. All rights reserved.
|
||
|
*
|
||
|
* Redistribution and use in source and binary forms, with or without
|
||
|
* modification, are permitted provided that the following conditions
|
||
|
* are met:
|
||
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
* notice, this list of conditions and the following disclaimer.
|
||
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
* documentation and/or other materials provided with the distribution.
|
||
|
* 3. Neither the name of the University nor the names of its contributors
|
||
|
* may be used to endorse or promote products derived from this software
|
||
|
* without specific prior written permission.
|
||
|
*
|
||
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
* SUCH DAMAGE.
|
||
|
*/
|
||
|
#include <sys/param.h>
|
||
|
#include <sys/ioctl.h>
|
||
|
|
||
|
#include <net/if.h>
|
||
|
#include <netinet/in.h>
|
||
|
|
||
|
#include <errno.h>
|
||
|
#include <ifaddrs.h>
|
||
|
#include <string.h>
|
||
|
#include <strings.h>
|
||
|
|
||
|
#include "libifconfig.h"
|
||
|
#include "libifconfig_internal.h"
|
||
|
|
||
|
static const struct sockaddr_in NULL_SIN;
|
||
|
|
||
|
static int
|
||
|
inet_prefixlen(const struct in_addr *addr)
|
||
|
{
|
||
|
int x;
|
||
|
|
||
|
x = ffs(ntohl(addr->s_addr));
|
||
|
return (x == 0 ? 0 : 33 - x);
|
||
|
}
|
||
|
|
||
|
int
|
||
|
ifconfig_inet_get_addrinfo(ifconfig_handle_t *h __unused,
|
||
|
const char *name __unused, struct ifaddrs *ifa,
|
||
|
struct ifconfig_inet_addr *addr)
|
||
|
{
|
||
|
bzero(addr, sizeof(*addr));
|
||
|
|
||
|
/* Set the address */
|
||
|
if (ifa->ifa_addr == NULL) {
|
||
|
return (-1);
|
||
|
} else {
|
||
|
addr->sin = (struct sockaddr_in *)ifa->ifa_addr;
|
||
|
}
|
||
|
|
||
|
/* Set the destination address */
|
||
|
if (ifa->ifa_flags & IFF_POINTOPOINT) {
|
||
|
if (ifa->ifa_dstaddr) {
|
||
|
addr->dst = (struct sockaddr_in *)ifa->ifa_dstaddr;
|
||
|
} else {
|
||
|
addr->dst = &NULL_SIN;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* Set the netmask and prefixlen */
|
||
|
if (ifa->ifa_netmask) {
|
||
|
addr->netmask = (struct sockaddr_in *)ifa->ifa_netmask;
|
||
|
} else {
|
||
|
addr->netmask = &NULL_SIN;
|
||
|
}
|
||
|
addr->prefixlen = inet_prefixlen(&addr->netmask->sin_addr);
|
||
|
|
||
|
/* Set the broadcast */
|
||
|
if (ifa->ifa_flags & IFF_BROADCAST) {
|
||
|
addr->broadcast = (struct sockaddr_in *)ifa->ifa_broadaddr;
|
||
|
}
|
||
|
|
||
|
/* Set the vhid */
|
||
|
if (ifa->ifa_data) {
|
||
|
addr->vhid = ((struct if_data *)ifa->ifa_data)->ifi_vhid;
|
||
|
}
|
||
|
|
||
|
return (0);
|
||
|
}
|