1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 #include <sys/param.h> 31 #include <sys/linker.h> 32 33 #include <err.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <sysexits.h> 37 #include <unistd.h> 38 39 static void 40 usage(void) 41 { 42 fprintf(stderr, "usage: kldunload [-fv] -i id ...\n"); 43 fprintf(stderr, " kldunload [-fv] [-n] name ...\n"); 44 exit(EX_USAGE); 45 } 46 47 #define OPT_NULL 0x00 48 #define OPT_ID 0x01 49 #define OPT_VERBOSE 0x02 50 #define OPT_FORCE 0x04 51 52 int 53 main(int argc, char** argv) 54 { 55 struct kld_file_stat stat; 56 int c, fileid, force, opt; 57 char *filename; 58 59 filename = NULL; 60 opt = OPT_NULL; 61 62 while ((c = getopt(argc, argv, "finv")) != -1) { 63 switch (c) { 64 case 'f': 65 opt |= OPT_FORCE; 66 break; 67 case 'i': 68 opt |= OPT_ID; 69 break; 70 case 'n': 71 /* 72 * XXX: For backward compatibility. Currently does 73 * nothing 74 */ 75 break; 76 case 'v': 77 opt |= OPT_VERBOSE; 78 break; 79 default: 80 usage(); 81 } 82 } 83 84 argc -= optind; 85 argv += optind; 86 87 if (argc == 0) 88 usage(); 89 90 while ((filename = *argv++) != NULL) { 91 if (opt & OPT_ID) { 92 fileid = atoi(filename); 93 if (fileid < 0) 94 errx(EXIT_FAILURE, "Invalid ID %s", optarg); 95 } else { 96 if ((fileid = kldfind(filename)) < 0) 97 errx(EXIT_FAILURE, "can't find file %s", 98 filename); 99 } 100 if (opt & OPT_VERBOSE) { 101 stat.version = sizeof(stat); 102 if (kldstat(fileid, &stat) < 0) 103 err(EXIT_FAILURE, "can't stat file"); 104 (void) printf("Unloading %s, id=%d\n", stat.name, 105 fileid); 106 } 107 if (opt & OPT_FORCE) 108 force = LINKER_UNLOAD_FORCE; 109 else 110 force = LINKER_UNLOAD_NORMAL; 111 112 if (kldunloadf(fileid, force) < 0) 113 err(EXIT_FAILURE, "can't unload file"); 114 } 115 116 return (EXIT_SUCCESS); 117 } 118