1/*	$NetBSD: fault.h,v 1.2 2020/06/30 16:28:17 maxv Exp $	*/
 2
 3/*
 4 * Copyright (c) 2020 The NetBSD Foundation, Inc.
 5 * All rights reserved.
 6 *
 7 * This code is derived from software contributed to The NetBSD Foundation
 8 * by Maxime Villard.
 9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef _SYS_FAULT_H_
33#define _SYS_FAULT_H_
34
35#ifdef _KERNEL_OPT
36#include "opt_fault.h"
37#endif
38
39#if !defined(_KERNEL) || defined(FAULT)
40
41#define FAULT_SCOPE_GLOBAL	0
42#define FAULT_SCOPE_LWP		1
43
44#define FAULT_MODE_NTH_ONESHOT	0
45
46#define FAULT_NTH_MIN		2
47
48struct fault_ioc_enable {
49	int scope;
50	int mode;
51	union {
52		unsigned long nth;
53	};
54};
55
56struct fault_ioc_disable {
57	int scope;
58};
59
60struct fault_ioc_getinfo {
61	int scope;
62	unsigned long nfaults;
63};
64
65#define FAULT_IOC_ENABLE	_IOW ('F', 1, struct fault_ioc_enable)
66#define FAULT_IOC_DISABLE	_IOW ('F', 2, struct fault_ioc_disable)
67#define FAULT_IOC_GETINFO	_IOWR('F', 3, struct fault_ioc_getinfo)
68
69#endif /* !_KERNEL || FAULT */
70
71#ifdef _KERNEL
72#ifdef FAULT
73bool fault_inject(void);
74#else
75#define fault_inject() false
76#endif
77#endif /* _KERNEL */
78
79#endif /* !_SYS_FAULT_H_ */