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