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
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