kldunload.c revision 25540 
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 *	$Id$
27 */
28
29#include <stdio.h>
30#include <unistd.h>
31#include <sys/param.h>
32#include <sys/linker.h>
33
34static char* progname;
35
36static void usage()
37{
38    fprintf(stderr, "usage: modunload [-i id] [-n filename]\n");
39    exit(1);
40}
41
42int main(int argc, char** argv)
43{
44    int c;
45    int verbose = 0;
46    int fileid = 0;
47    char* filename = 0;
48
49    progname = argv[0];
50    while ((c = getopt(argc, argv, "vi:n:")) != -1)
51	switch (c) {
52	case 'v':
53	    verbose = 1;
54	    break;
55	case 'i':
56	    fileid = atoi(optarg);
57	    break;
58	case 'n':
59	    filename = optarg;
60	    break;
61	default:
62	    usage();
63	}
64    argc -= optind;
65    argv += optind;
66
67    if (argc != 0)
68	usage();
69
70    if (fileid == 0 && filename == 0)
71	usage();
72
73    if (filename) {
74	fileid = kldfind(filename);
75	if (fileid < 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