| 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 | |
| 11 | unsigned int cachefiles_error_injection_state; |
| 12 | |
| 13 | static struct ctl_table_header *cachefiles_sysctl; |
| 14 | static 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 | int __init cachefiles_register_error_injection(void) |
| 25 | { |
| 26 | cachefiles_sysctl = register_sysctl("cachefiles", cachefiles_sysctls); |
| 27 | if (!cachefiles_sysctl) |
| 28 | return -ENOMEM; |
| 29 | return 0; |
| 30 | |
| 31 | } |
| 32 | |
| 33 | void cachefiles_unregister_error_injection(void) |
| 34 | { |
| 35 | unregister_sysctl_table(table: cachefiles_sysctl); |
| 36 | } |
| 37 |