1 | // SPDX-License-Identifier: GPL-2.0 |
2 | #define __NO_FORTIFY |
3 | #include <linux/types.h> |
4 | #include <linux/module.h> |
5 | |
6 | /* |
7 | * This file exports some critical string functions and compiler |
8 | * built-in functions (where calls are emitted by the compiler |
9 | * itself that we cannot avoid even in kernel code) to modules. |
10 | * |
11 | * "_user.c" code that previously used exports here such as hostfs |
12 | * really should be considered part of the 'hypervisor' and define |
13 | * its own API boundary like hostfs does now; don't add exports to |
14 | * this file for such cases. |
15 | */ |
16 | |
17 | /* If it's not defined, the export is included in lib/string.c.*/ |
18 | #ifdef __HAVE_ARCH_STRSTR |
19 | #undef strstr |
20 | EXPORT_SYMBOL(strstr); |
21 | #endif |
22 | |
23 | #ifndef __x86_64__ |
24 | #undef memcpy |
25 | extern void *memcpy(void *, const void *, size_t); |
26 | EXPORT_SYMBOL(memcpy); |
27 | extern void *memmove(void *, const void *, size_t); |
28 | EXPORT_SYMBOL(memmove); |
29 | #undef memset |
30 | extern void *memset(void *, int, size_t); |
31 | EXPORT_SYMBOL(memset); |
32 | #endif |
33 | |
34 | #ifdef CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA |
35 | /* needed for __access_ok() */ |
36 | EXPORT_SYMBOL(vsyscall_ehdr); |
37 | EXPORT_SYMBOL(vsyscall_end); |
38 | #endif |
39 | |
40 | #ifdef _FORTIFY_SOURCE |
41 | extern int __sprintf_chk(char *str, int flag, size_t len, const char *format); |
42 | EXPORT_SYMBOL(__sprintf_chk); |
43 | #endif |
44 | |