1 /*-
2 * Copyright (c) 2008 Peter Holm <pho@FreeBSD.org>
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
28 #include <sys/param.h>
29 #include <sys/systm.h>
30 #include <sys/kernel.h>
31 #include <sys/module.h>
32 #include <sys/conf.h>
33 #include <sys/uio.h>
34 #include <sys/malloc.h>
35 #include <sys/sysctl.h>
36
37
38 static int panic_type = 0;
39
40 static int
sysctl_panic_type(SYSCTL_HANDLER_ARGS)41 sysctl_panic_type(SYSCTL_HANDLER_ARGS)
42 {
43 int error, value;
44 volatile int i;
45
46 /* Write out the old value. */
47 error = SYSCTL_OUT(req, &panic_type, sizeof(int));
48 if (error || req->newptr == NULL)
49 return (error);
50
51 /* Read in and verify the new value. */
52 error = SYSCTL_IN(req, &value, sizeof(int));
53 if (error)
54 return (error);
55 if (value < 0)
56 return (EINVAL);
57 panic_type = value;
58
59 if (panic_type == 1)
60 panic("Test panic type 1");
61
62 if (panic_type == 2)
63 i = *(int *)0; /* Fatal trap */
64
65 return (0);
66 }
67
68
69 SYSCTL_PROC(_debug, OID_AUTO, panic_type, CTLTYPE_INT|CTLFLAG_RW,
70 &panic_type, 0, sysctl_panic_type, "I",
71 "Test panic type");
72
73
74 static int
ptest_modevent(module_t mod,int what,void * arg)75 ptest_modevent(module_t mod, int what, void *arg)
76 {
77 switch (what) {
78 case MOD_LOAD:
79 return(0);
80 case MOD_UNLOAD:
81 return (0);
82 default:
83 break;
84 }
85
86 return (0);
87 }
88
89 moduledata_t ptest_mdata = {
90 "ptest",
91 ptest_modevent,
92 NULL
93 };
94
95 DECLARE_MODULE(ptest, ptest_mdata, SI_SUB_DRIVERS, SI_ORDER_ANY);
96 MODULE_VERSION(ptest, 1);
97