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