kldunload.c revision 30684 
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 *	$Id: kldunload.c,v 1.3 1997/10/21 09:59:26 jmg Exp $
27 */
28
29#include <err.h>
30#include <stdio.h>
31#include <stdlib.h>
32#include <unistd.h>
33#include <sys/param.h>
34#include <sys/linker.h>
35
36static void
37usage(void)
38{
39    fprintf(stderr, "usage: kldunload [-i id] [-n filename]\n");
40    exit(1);
41}
42
43int
44main(int argc, char** argv)
45{
46    int c;
47    int verbose = 0;
48    int fileid = 0;
49    char* filename = 0;
50
51    while ((c = getopt(argc, argv, "i:n:v")) != -1)
52	switch (c) {
53	case 'i':
54	    fileid = atoi(optarg);
55	    break;
56	case 'n':
57	    filename = optarg;
58	    break;
59	case 'v':
60	    verbose = 1;
61	    break;
62	default:
63	    usage();
64	}
65    argc -= optind;
66    argv += optind;
67
68    if (argc != 0)
69	usage();
70
71    if (fileid == 0 && filename == 0)
72	usage();
73
74    if (filename) {
75	if ((fileid = kldfind(filename)) < 0)
76	    err(1, "Can't find file %s", filename);
77    }
78
79    if (verbose) {
80	struct kld_file_stat stat;
81	stat.version = sizeof stat;
82	if (kldstat(fileid, &stat) < 0)
83	    err(1, "Can't stat file");
84	printf("Unloading %s, id=%d\n", stat.name, fileid);
85    }
86
87    if (kldunload(fileid) < 0)
88	err(1, "Can't unload file");
89
90    return 0;
91}
92
93