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(cachefiles_sysctl); 36 } 37