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 <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
39static void
40usage(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
52int
53main(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