| 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(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(name: "fail_usercopy", NULL, |
| 24 | attr: &fail_usercopy.attr); |
| 25 | if (IS_ERR(ptr: dir)) |
| 26 | return PTR_ERR(ptr: 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(attr: &fail_usercopy.attr, size: 1); |
| 38 | } |
| 39 | EXPORT_SYMBOL_GPL(should_fail_usercopy); |
| 40 |