40e0435964
Allow carp configuration information to be supplied and retrieved via
netlink.
Reviewed by: melifaro
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D39048
119 lines
3.0 KiB
C
119 lines
3.0 KiB
C
/*
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* Copyright (c) 2016-2017, Marie Helene Kvello-Aune
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* thislist of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/ioctl.h>
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#include <net/if.h>
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#include <errno.h>
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#include <ifaddrs.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "libifconfig.h" // Needed for ifconfig_errstate
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#include "libifconfig_internal.h"
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int
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ifconfig_getifaddrs(ifconfig_handle_t *h)
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{
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int ret;
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if (h->ifap == NULL) {
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ret = getifaddrs(&h->ifap);
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return (ret);
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} else {
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return (0);
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}
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}
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int
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ifconfig_ioctlwrap(ifconfig_handle_t *h, const int addressfamily,
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unsigned long request, void *data)
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{
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int s;
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if (ifconfig_socket(h, addressfamily, &s) != 0) {
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return (-1);
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}
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if (ioctl(s, request, data) != 0) {
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h->error.errtype = IOCTL;
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h->error.ioctl_request = request;
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h->error.errcode = errno;
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return (-1);
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}
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return (0);
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}
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/*
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* Function to get socket for the specified address family.
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* If the socket doesn't already exist, attempt to create it.
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*/
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int
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ifconfig_socket(ifconfig_handle_t *h, const int addressfamily, int *s)
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{
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if (addressfamily > AF_MAX) {
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h->error.errtype = SOCKET;
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h->error.errcode = EINVAL;
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return (-1);
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}
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if (h->sockets[addressfamily] != -1) {
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*s = h->sockets[addressfamily];
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return (0);
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}
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/* We don't have a socket of that type available. Create one. */
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h->sockets[addressfamily] = socket(addressfamily, SOCK_DGRAM, 0);
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if (h->sockets[addressfamily] == -1) {
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h->error.errtype = SOCKET;
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h->error.errcode = errno;
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return (-1);
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}
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*s = h->sockets[addressfamily];
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return (0);
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}
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void
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ifconfig_error_clear(ifconfig_handle_t *h)
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{
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h->error.errtype = OK;
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h->error.errcode = 0;
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}
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void
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ifconfig_error(ifconfig_handle_t *h, ifconfig_errtype type, int error)
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{
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h->error.errtype = type;
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h->error.errcode = error;
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}
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