1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 1997 Doug Rabson 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/linker.h> 34 35 #include <err.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <sysexits.h> 39 #include <unistd.h> 40 41 static void 42 usage(void) 43 { 44 fprintf(stderr, "usage: kldunload [-fv] -i id ...\n"); 45 fprintf(stderr, " kldunload [-fv] [-n] name ...\n"); 46 exit(EX_USAGE); 47 } 48 49 #define OPT_NULL 0x00 50 #define OPT_ID 0x01 51 #define OPT_VERBOSE 0x02 52 #define OPT_FORCE 0x04 53 54 int 55 main(int argc, char** argv) 56 { 57 struct kld_file_stat stat; 58 int c, fileid, force, opt; 59 char *filename; 60 61 filename = NULL; 62 opt = OPT_NULL; 63 64 while ((c = getopt(argc, argv, "finv")) != -1) { 65 switch (c) { 66 case 'f': 67 opt |= OPT_FORCE; 68 break; 69 case 'i': 70 opt |= OPT_ID; 71 break; 72 case 'n': 73 /* 74 * XXX: For backward compatibility. Currently does 75 * nothing 76 */ 77 break; 78 case 'v': 79 opt |= OPT_VERBOSE; 80 break; 81 default: 82 usage(); 83 } 84 } 85 86 argc -= optind; 87 argv += optind; 88 89 if (argc == 0) 90 usage(); 91 92 while ((filename = *argv++) != NULL) { 93 if (opt & OPT_ID) { 94 fileid = atoi(filename); 95 if (fileid < 0) 96 errx(EXIT_FAILURE, "Invalid ID %s", optarg); 97 } else { 98 if ((fileid = kldfind(filename)) < 0) 99 errx(EXIT_FAILURE, "can't find file %s", 100 filename); 101 } 102 if (opt & OPT_VERBOSE) { 103 stat.version = sizeof(stat); 104 if (kldstat(fileid, &stat) < 0) 105 err(EXIT_FAILURE, "can't stat file"); 106 (void) printf("Unloading %s, id=%d\n", stat.name, 107 fileid); 108 } 109 if (opt & OPT_FORCE) 110 force = LINKER_UNLOAD_FORCE; 111 else 112 force = LINKER_UNLOAD_NORMAL; 113 114 if (kldunloadf(fileid, force) < 0) 115 err(EXIT_FAILURE, "can't unload file"); 116 } 117 118 return (EXIT_SUCCESS); 119 } 120