1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1989, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * Copyright (c) 2008 Cisco Systems, All rights reserved 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * setfib file skelaton taken from nice.c 33 */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include <ctype.h> 39 #include <err.h> 40 #include <errno.h> 41 #include <limits.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <unistd.h> 45 #include <sys/socket.h> 46 #include <sys/sysctl.h> 47 48 static void usage(void); 49 50 int 51 main(int argc, char *argv[]) 52 { 53 long fib = 0; 54 int ch; 55 char *ep; 56 int numfibs; 57 size_t intsize = sizeof(int); 58 59 if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 60 errx(1, "Multiple FIBS not supported"); 61 if (argc < 2) 62 usage(); 63 ep = argv[1]; 64 /* 65 * convert -N or N to -FN. (N is a number) 66 */ 67 if (ep[0]== '-' && isdigit((unsigned char)ep[1])) 68 ep++; 69 if (isdigit((unsigned char)*ep)) 70 if (asprintf(&argv[1], "-F%s", ep) < 0) 71 err(1, "asprintf"); 72 73 while ((ch = getopt(argc, argv, "F:")) != -1) { 74 switch (ch) { 75 case 'F': 76 errno = 0; 77 fib = strtol(optarg, &ep, 10); 78 if (ep == optarg || *ep != '\0' || errno || 79 fib < 0 || fib >= numfibs) 80 errx(1, "%s: invalid FIB (max %d)", 81 optarg, numfibs - 1); 82 break; 83 default: 84 usage(); 85 } 86 } 87 argc -= optind; 88 argv += optind; 89 90 if (argc == 0) 91 usage(); 92 93 errno = 0; 94 if (setfib((int)fib)) 95 warn("setfib"); 96 execvp(*argv, argv); 97 err(errno == ENOENT ? 127 : 126, "%s", *argv); 98 } 99 100 static void 101 usage(void) 102 { 103 104 (void)fprintf(stderr, 105 "usage: setfib [-[F]]value command\n"); 106 exit(1); 107 } 108