1/*
2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. 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 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
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| 34#if 0 |
35#ifndef lint
36static const char copyright[] =
37"@(#) Copyright (c) 1980, 1993\n\
38 The Regents of the University of California. All rights reserved.\n";
39#endif /* not lint */
40
41#ifndef lint
|
41#if 0
|
42static char sccsid[] = "From: @(#)swapon.c 8.1 (Berkeley) 6/5/93";
|
43#endif
44static const char rcsid[] =
45 "$FreeBSD: head/sbin/dumpon/dumpon.c 96381 2002-05-11 03:07:38Z alfred $";
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43#endif /* not lint */
|
44#endif
45#include <sys/cdefs.h>
46__FBSDID("$FreeBSD: head/sbin/dumpon/dumpon.c 114589 2003-05-03 18:41:59Z obrien $"); |
47
48#include <err.h>
49#include <stdio.h>
50#include <stdlib.h>
51#include <fcntl.h>
52#include <paths.h>
53#include <string.h>
54#include <unistd.h>
55#include <sys/param.h>
56#include <sys/disk.h>
57#include <sysexits.h>
58
59void usage(void) __dead2;
60
61int
62main(int argc, char *argv[])
63{
64 int ch, verbose, rv;
65 int i, fd;
66 u_int u;
67
68 verbose = rv = 0;
69 while ((ch = getopt(argc, argv, "v")) != -1)
70 switch((char)ch) {
71 case 'v':
72 verbose = 1;
73 break;
74 case '?':
75 default:
76 usage();
77 }
78 argv += optind;
79
80 if (!argv[0] || argv[1])
81 usage();
82
83 if (strcmp(argv[0], "off")) {
84 fd = open(argv[0], O_RDONLY);
85 if (fd < 0)
86 err(EX_OSFILE, "%s", argv[0]);
87 u = 0;
88 i = ioctl(fd, DIOCSKERNELDUMP, &u);
89 u = 1;
90 i = ioctl(fd, DIOCSKERNELDUMP, &u);
91 if (i == 0 && verbose)
92 printf("kernel dumps on %s\n", argv[0]);
93
94 } else {
95 fd = open(_PATH_DEVNULL, O_RDONLY);
96 if (fd < 0)
97 err(EX_OSFILE, "%s", _PATH_DEVNULL);
98 u = 0;
99 i = ioctl(fd, DIOCSKERNELDUMP, &u);
100 if (i == 0 && verbose)
101 printf("kernel dumps disabled\n");
102 }
103 if (i < 0)
104 err(EX_OSERR, "ioctl(DIOCSKERNELDUMP)");
105
106 exit (0);
107}
108
109void
110usage(void)
111{
112 fprintf(stderr,
113 "usage: dumpon [-v] special_file\n"
114 " dumpon [-v] off\n");
115 exit(EX_USAGE);
116}
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