1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _ASM_GENERIC_ERROR_INJECTION_H |
3 | #define _ASM_GENERIC_ERROR_INJECTION_H |
4 | |
5 | #if defined(__KERNEL__) && !defined(__ASSEMBLY__) |
6 | enum { |
7 | EI_ETYPE_NONE, /* Dummy value for undefined case */ |
8 | EI_ETYPE_NULL, /* Return NULL if failure */ |
9 | EI_ETYPE_ERRNO, /* Return -ERRNO if failure */ |
10 | EI_ETYPE_ERRNO_NULL, /* Return -ERRNO or NULL if failure */ |
11 | EI_ETYPE_TRUE, /* Return true if failure */ |
12 | }; |
13 | |
14 | struct error_injection_entry { |
15 | unsigned long addr; |
16 | int etype; |
17 | }; |
18 | |
19 | #ifdef CONFIG_FUNCTION_ERROR_INJECTION |
20 | /* |
21 | * Whitelist ganerating macro. Specify functions which can be |
22 | * error-injectable using this macro. |
23 | */ |
24 | #define ALLOW_ERROR_INJECTION(fname, _etype) \ |
25 | static struct error_injection_entry __used \ |
26 | __attribute__((__section__("_error_injection_whitelist"))) \ |
27 | _eil_addr_##fname = { \ |
28 | .addr = (unsigned long)fname, \ |
29 | .etype = EI_ETYPE_##_etype, \ |
30 | }; |
31 | #else |
32 | #define ALLOW_ERROR_INJECTION(fname, _etype) |
33 | #endif |
34 | #endif |
35 | |
36 | #endif /* _ASM_GENERIC_ERROR_INJECTION_H */ |
37 | |