xref: /freebsd/lib/libifconfig/libifconfig_carp.c (revision d4eeb02986980bf33dd56c41ceb9fc5f180c0d47)
1 /*
2  * Copyright (c) 1983, 1993
3  *  The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
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.
16  *
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
27  * SUCH DAMAGE.
28  *
29  * $FreeBSD$
30  */
31 #include <sys/param.h>
32 #include <sys/ioctl.h>
33 
34 #include <net/if.h>
35 #include <netinet/ip_carp.h>
36 
37 #include <string.h>
38 #include <strings.h>
39 
40 #include "libifconfig.h"
41 #include "libifconfig_internal.h"
42 
43 
44 int
45 ifconfig_carp_get_info(ifconfig_handle_t *h, const char *name,
46     struct carpreq *carpr, int ncarpr)
47 {
48 	struct ifreq ifr;
49 
50 	bzero(carpr, sizeof(struct carpreq) * ncarpr);
51 	carpr[0].carpr_count = ncarpr;
52 	strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
53 	ifr.ifr_data = (caddr_t)carpr;
54 
55 	if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCGVH, &ifr) != 0) {
56 		return (-1);
57 	}
58 
59 	return (0);
60 }
61