7fa282e616
It is hard to reason about the contents of 'ifr' at any given time as nearly every function sets random fields or pointers in this structure. Use local on-stack clean 'struct ifreq' for each function instead. Reviewed by: kp Differential Revision: https://reviews.freebsd.org/D40534 MFC after: 2 weeks
122 lines
3.2 KiB
C
122 lines
3.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2011 Alexander V. Chernikov
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* Copyright (c) 2011 Christian S.J. Peron
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* Copyright (c) 2011 Bjoern A. Zeeb
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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
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $FreeBSD$
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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 <sys/socket.h>
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#include <sys/sockio.h>
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#include <net/if.h>
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#include <net/route.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <err.h>
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#include "ifconfig.h"
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static void
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fib_status(if_ctx *ctx)
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{
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struct ifreq ifr;
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memset(&ifr, 0, sizeof(ifr));
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strlcpy(ifr.ifr_name, ctx->ifname, sizeof(ifr.ifr_name));
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if (ioctl_ctx(ctx, SIOCGIFFIB, (caddr_t)&ifr) == 0 &&
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ifr.ifr_fib != RT_DEFAULT_FIB)
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printf("\tfib: %u\n", ifr.ifr_fib);
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memset(&ifr, 0, sizeof(ifr));
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strlcpy(ifr.ifr_name, ctx->ifname, sizeof(ifr.ifr_name));
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if (ioctl_ctx(ctx, SIOCGTUNFIB, (caddr_t)&ifr) == 0 &&
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ifr.ifr_fib != RT_DEFAULT_FIB)
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printf("\ttunnelfib: %u\n", ifr.ifr_fib);
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}
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static void
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setiffib(if_ctx *ctx, const char *val, int dummy __unused)
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{
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struct ifreq ifr = {};
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unsigned long fib;
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char *ep;
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fib = strtoul(val, &ep, 0);
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if (*ep != '\0' || fib > UINT_MAX) {
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warn("fib %s not valid", val);
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return;
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}
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ifr.ifr_fib = fib;
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if (ioctl_ctx_ifr(ctx, SIOCSIFFIB, &ifr) < 0)
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warn("ioctl (SIOCSIFFIB)");
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}
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static void
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settunfib(if_ctx *ctx, const char *val, int dummy __unused)
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{
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struct ifreq ifr = {};
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unsigned long fib;
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char *ep;
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fib = strtoul(val, &ep, 0);
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if (*ep != '\0' || fib > UINT_MAX) {
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warn("fib %s not valid", val);
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return;
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}
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ifr.ifr_fib = fib;
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if (ioctl_ctx_ifr(ctx, SIOCSTUNFIB, &ifr) < 0)
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warn("ioctl (SIOCSTUNFIB)");
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}
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static struct cmd fib_cmds[] = {
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DEF_CMD_ARG("fib", setiffib),
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DEF_CMD_ARG("tunnelfib", settunfib),
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};
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static struct afswtch af_fib = {
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.af_name = "af_fib",
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.af_af = AF_UNSPEC,
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.af_other_status = fib_status,
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};
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static __constructor void
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fib_ctor(void)
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{
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size_t i;
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for (i = 0; i < nitems(fib_cmds); i++)
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cmd_register(&fib_cmds[i]);
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af_register(&af_fib);
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}
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