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106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1989, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 2008 Cisco Systems, 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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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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* setfib file skelaton taken from nice.c
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*/
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#include <sys/cdefs.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <limits.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 <sys/socket.h>
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#include <sys/sysctl.h>
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static void usage(void) __dead2;
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int
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main(int argc, char *argv[])
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{
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long fib = 0;
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int ch;
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char *ep;
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int numfibs;
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size_t intsize = sizeof(int);
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if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1)
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errx(1, "Multiple FIBS not supported");
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if (argc < 2)
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usage();
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ep = argv[1];
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/*
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* convert -N or N to -FN. (N is a number)
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*/
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if (ep[0]== '-' && isdigit((unsigned char)ep[1]))
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ep++;
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if (isdigit((unsigned char)*ep))
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if (asprintf(&argv[1], "-F%s", ep) < 0)
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err(1, "asprintf");
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while ((ch = getopt(argc, argv, "F:")) != -1) {
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switch (ch) {
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case 'F':
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errno = 0;
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fib = strtol(optarg, &ep, 10);
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if (ep == optarg || *ep != '\0' || errno ||
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fib < 0 || fib >= numfibs)
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errx(1, "%s: invalid FIB (max %d)",
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optarg, numfibs - 1);
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break;
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if (argc == 0)
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usage();
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errno = 0;
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if (setfib((int)fib))
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warn("setfib");
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execvp(*argv, argv);
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err(errno == ENOENT ? 127 : 126, "%s", *argv);
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}
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static void
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usage(void)
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{
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(void)fprintf(stderr,
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"usage: setfib [-[F]]value command\n");
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exit(1);
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}
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