162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-only 262306a36Sopenharmony_ci#include <linux/fault-inject.h> 362306a36Sopenharmony_ci#include <linux/fault-inject-usercopy.h> 462306a36Sopenharmony_ci 562306a36Sopenharmony_cistatic struct { 662306a36Sopenharmony_ci struct fault_attr attr; 762306a36Sopenharmony_ci} fail_usercopy = { 862306a36Sopenharmony_ci .attr = FAULT_ATTR_INITIALIZER, 962306a36Sopenharmony_ci}; 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_cistatic int __init setup_fail_usercopy(char *str) 1262306a36Sopenharmony_ci{ 1362306a36Sopenharmony_ci return setup_fault_attr(&fail_usercopy.attr, str); 1462306a36Sopenharmony_ci} 1562306a36Sopenharmony_ci__setup("fail_usercopy=", setup_fail_usercopy); 1662306a36Sopenharmony_ci 1762306a36Sopenharmony_ci#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS 1862306a36Sopenharmony_ci 1962306a36Sopenharmony_cistatic int __init fail_usercopy_debugfs(void) 2062306a36Sopenharmony_ci{ 2162306a36Sopenharmony_ci struct dentry *dir; 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_ci dir = fault_create_debugfs_attr("fail_usercopy", NULL, 2462306a36Sopenharmony_ci &fail_usercopy.attr); 2562306a36Sopenharmony_ci if (IS_ERR(dir)) 2662306a36Sopenharmony_ci return PTR_ERR(dir); 2762306a36Sopenharmony_ci 2862306a36Sopenharmony_ci return 0; 2962306a36Sopenharmony_ci} 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_cilate_initcall(fail_usercopy_debugfs); 3262306a36Sopenharmony_ci 3362306a36Sopenharmony_ci#endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */ 3462306a36Sopenharmony_ci 3562306a36Sopenharmony_cibool should_fail_usercopy(void) 3662306a36Sopenharmony_ci{ 3762306a36Sopenharmony_ci return should_fail(&fail_usercopy.attr, 1); 3862306a36Sopenharmony_ci} 3962306a36Sopenharmony_ciEXPORT_SYMBOL_GPL(should_fail_usercopy); 40