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