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 setup_fail_usercopy(char * str)11static 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 fail_usercopy_debugfs(void)19static 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 26 return PTR_ERR_OR_ZERO(dir); 27 } 28 29 late_initcall(fail_usercopy_debugfs); 30 31 #endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */ 32 should_fail_usercopy(void)33bool should_fail_usercopy(void) 34 { 35 return should_fail(&fail_usercopy.attr, 1); 36 } 37 EXPORT_SYMBOL_GPL(should_fail_usercopy); 38