1// SPDX-License-Identifier: GPL-2.0-or-later
2/* Error injection handling.
3 *
4 * Copyright (C) 2021 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.com)
6 */
7
8#include <linux/sysctl.h>
9#include "internal.h"
10
11unsigned int cachefiles_error_injection_state;
12
13static struct ctl_table_header *cachefiles_sysctl;
14static struct ctl_table cachefiles_sysctls[] = {
15	{
16		.procname	= "error_injection",
17		.data		= &cachefiles_error_injection_state,
18		.maxlen		= sizeof(unsigned int),
19		.mode		= 0644,
20		.proc_handler	= proc_douintvec,
21	},
22	{}
23};
24
25int __init cachefiles_register_error_injection(void)
26{
27	cachefiles_sysctl = register_sysctl("cachefiles", cachefiles_sysctls);
28	if (!cachefiles_sysctl)
29		return -ENOMEM;
30	return 0;
31
32}
33
34void cachefiles_unregister_error_injection(void)
35{
36	unregister_sysctl_table(cachefiles_sysctl);
37}
38