18c2ecf20Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-only 28c2ecf20Sopenharmony_ci#include <linux/fault-inject.h> 38c2ecf20Sopenharmony_ci#include <linux/fault-inject-usercopy.h> 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_cistatic struct { 68c2ecf20Sopenharmony_ci struct fault_attr attr; 78c2ecf20Sopenharmony_ci} fail_usercopy = { 88c2ecf20Sopenharmony_ci .attr = FAULT_ATTR_INITIALIZER, 98c2ecf20Sopenharmony_ci}; 108c2ecf20Sopenharmony_ci 118c2ecf20Sopenharmony_cistatic int __init setup_fail_usercopy(char *str) 128c2ecf20Sopenharmony_ci{ 138c2ecf20Sopenharmony_ci return setup_fault_attr(&fail_usercopy.attr, str); 148c2ecf20Sopenharmony_ci} 158c2ecf20Sopenharmony_ci__setup("fail_usercopy=", setup_fail_usercopy); 168c2ecf20Sopenharmony_ci 178c2ecf20Sopenharmony_ci#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS 188c2ecf20Sopenharmony_ci 198c2ecf20Sopenharmony_cistatic int __init fail_usercopy_debugfs(void) 208c2ecf20Sopenharmony_ci{ 218c2ecf20Sopenharmony_ci struct dentry *dir; 228c2ecf20Sopenharmony_ci 238c2ecf20Sopenharmony_ci dir = fault_create_debugfs_attr("fail_usercopy", NULL, 248c2ecf20Sopenharmony_ci &fail_usercopy.attr); 258c2ecf20Sopenharmony_ci if (IS_ERR(dir)) 268c2ecf20Sopenharmony_ci return PTR_ERR(dir); 278c2ecf20Sopenharmony_ci 288c2ecf20Sopenharmony_ci return 0; 298c2ecf20Sopenharmony_ci} 308c2ecf20Sopenharmony_ci 318c2ecf20Sopenharmony_cilate_initcall(fail_usercopy_debugfs); 328c2ecf20Sopenharmony_ci 338c2ecf20Sopenharmony_ci#endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */ 348c2ecf20Sopenharmony_ci 358c2ecf20Sopenharmony_cibool should_fail_usercopy(void) 368c2ecf20Sopenharmony_ci{ 378c2ecf20Sopenharmony_ci return should_fail(&fail_usercopy.attr, 1); 388c2ecf20Sopenharmony_ci} 398c2ecf20Sopenharmony_ciEXPORT_SYMBOL_GPL(should_fail_usercopy); 40