1 // SPDX-License-Identifier: GPL-2.0-only 2 #include <linux/fault-inject.h> 3 #include <linux/fault-inject-usercopy.h> 4 5 static struct { 6 struct fault_attr attr; 7 } fail_usercopy = { 8 .attr = FAULT_ATTR_INITIALIZER, 9 }; 10 11 static int __init setup_fail_usercopy(char *str) 12 { 13 return setup_fault_attr(&fail_usercopy.attr, str); 14 } 15 __setup("fail_usercopy=", setup_fail_usercopy); 16 17 #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS 18 19 static int __init fail_usercopy_debugfs(void) 20 { 21 struct dentry *dir; 22 23 dir = fault_create_debugfs_attr("fail_usercopy", NULL, 24 &fail_usercopy.attr); 25 if (IS_ERR(dir)) 26 return PTR_ERR(dir); 27 28 return 0; 29 } 30 31 late_initcall(fail_usercopy_debugfs); 32 33 #endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */ 34 35 bool should_fail_usercopy(void) 36 { 37 return should_fail(&fail_usercopy.attr, 1); 38 } 39 EXPORT_SYMBOL_GPL(should_fail_usercopy); 40