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
usage(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
main(int argc,char ** argv)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