/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1989, 1993, 1994
* The Regents of the University of California. All rights reserved.
* Copyright (c) 2008 Cisco Systems, 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.
*
* setfib file skelaton taken from nice.c
*/
#include <sys/cdefs.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
static void usage(void) __dead2;
int
main(int argc, char *argv[])
{
long fib = 0;
int ch;
char *ep;
int numfibs;
size_t intsize = sizeof(int);
if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1)
errx(1, "Multiple FIBS not supported");
if (argc < 2)
usage();
ep = argv[1];
/*
* convert -N or N to -FN. (N is a number)
*/
if (ep[0]== '-' && isdigit((unsigned char)ep[1]))
ep++;
if (isdigit((unsigned char)*ep))
if (asprintf(&argv[1], "-F%s", ep) < 0)
err(1, "asprintf");
while ((ch = getopt(argc, argv, "F:")) != -1) {
switch (ch) {
case 'F':
errno = 0;
fib = strtol(optarg, &ep, 10);
if (ep == optarg || *ep != '\0' || errno ||
fib < 0 || fib >= numfibs)
errx(1, "%s: invalid FIB (max %d)",
optarg, numfibs - 1);
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc == 0)
usage();
errno = 0;
if (setfib((int)fib))
warn("setfib");
execvp(*argv, argv);
err(errno == ENOENT ? 127 : 126, "%s", *argv);
}
static void
usage(void)
{
(void)fprintf(stderr,
"usage: setfib [-[F]]value command\n");
exit(1);
}
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