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 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <err.h> 31 #include <stdio.h> 32 #include <stdlib.h> 33 #include <unistd.h> 34 #include <sys/param.h> 35 #include <sys/linker.h> 36 37 static void 38 usage(void) 39 { 40 fprintf(stderr, "usage: kldunload [-v] -i id\n"); 41 fprintf(stderr, " kldunload [-v] [-n] name\n"); 42 exit(1); 43 } 44 45 int 46 main(int argc, char** argv) 47 { 48 int c; 49 int verbose = 0; 50 int fileid = 0; 51 int force = LINKER_UNLOAD_NORMAL; 52 char* filename = NULL; 53 54 while ((c = getopt(argc, argv, "fi:n:v")) != -1) 55 switch (c) { 56 case 'f': 57 force = LINKER_UNLOAD_FORCE; 58 break; 59 case 'i': 60 fileid = atoi(optarg); 61 if (!fileid) 62 errx(1, "Invalid ID %s", optarg); 63 break; 64 case 'n': 65 filename = optarg; 66 break; 67 case 'v': 68 verbose = 1; 69 break; 70 default: 71 usage(); 72 } 73 argc -= optind; 74 argv += optind; 75 76 if (fileid == 0 && filename == NULL && (argc == 1)) { 77 filename = *argv; 78 argc--; 79 } 80 81 if (argc != 0 || (fileid != 0 && filename != NULL)) 82 usage(); 83 84 if (fileid == 0 && filename == NULL) 85 usage(); 86 87 if (filename != NULL) { 88 if ((fileid = kldfind(filename)) < 0) 89 err(1, "can't find file %s", filename); 90 } 91 92 if (verbose) { 93 struct kld_file_stat stat; 94 stat.version = sizeof stat; 95 if (kldstat(fileid, &stat) < 0) 96 err(1, "can't stat file"); 97 printf("Unloading %s, id=%d\n", stat.name, fileid); 98 } 99 100 if (kldunloadf(fileid, force) < 0) 101 err(1, "can't unload file"); 102 103 return 0; 104 } 105