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
20EXPORT_SYMBOL(strstr);
21#endif
22
23#ifndef __x86_64__
24#undef memcpy
25extern void *memcpy(void *, const void *, size_t);
26EXPORT_SYMBOL(memcpy);
27extern void *memmove(void *, const void *, size_t);
28EXPORT_SYMBOL(memmove);
29#undef memset
30extern void *memset(void *, int, size_t);
31EXPORT_SYMBOL(memset);
32#endif
33
34#ifdef CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA
35/* needed for __access_ok() */
36EXPORT_SYMBOL(vsyscall_ehdr);
37EXPORT_SYMBOL(vsyscall_end);
38#endif
39
40#ifdef _FORTIFY_SOURCE
41extern int __sprintf_chk(char *str, int flag, size_t len, const char *format);
42EXPORT_SYMBOL(__sprintf_chk);
43#endif
44