1 /*- 2 * Copyright (c) 1997 Doug Rabson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #ifndef lint 28 static const char rcsid[] = 29 "$FreeBSD$"; 30 #endif /* not lint */ 31 32 #include <err.h> 33 #include <stdio.h> 34 #include <stdlib.h> 35 #include <unistd.h> 36 #include <sys/param.h> 37 #include <sys/linker.h> 38 39 static void 40 usage(void) 41 { 42 fprintf(stderr, "usage: kldunload [-v] -i id\n"); 43 fprintf(stderr, " kldunload [-v] [-n] name\n"); 44 exit(1); 45 } 46 47 int 48 main(int argc, char** argv) 49 { 50 int c; 51 int verbose = 0; 52 int fileid = 0; 53 char* filename = 0; 54 55 while ((c = getopt(argc, argv, "i:n:v")) != -1) 56 switch (c) { 57 case 'i': 58 fileid = atoi(optarg); 59 if (!fileid) 60 errx(1, "Invalid ID %s", optarg); 61 break; 62 case 'n': 63 filename = optarg; 64 break; 65 case 'v': 66 verbose = 1; 67 break; 68 default: 69 usage(); 70 } 71 argc -= optind; 72 argv += optind; 73 74 if (!fileid && !filename && (argc == 1)) { 75 filename = *argv; 76 argc--; 77 } 78 79 if (argc != 0 || fileid && filename) 80 usage(); 81 82 if (fileid == 0 && filename == 0) 83 usage(); 84 85 if (filename) { 86 if ((fileid = kldfind(filename)) < 0) 87 err(1, "can't find file %s", filename); 88 } 89 90 if (verbose) { 91 struct kld_file_stat stat; 92 stat.version = sizeof stat; 93 if (kldstat(fileid, &stat) < 0) 94 err(1, "can't stat file"); 95 printf("Unloading %s, id=%d\n", stat.name, fileid); 96 } 97 98 if (kldunload(fileid) < 0) 99 err(1, "can't unload file"); 100 101 return 0; 102 } 103