| // SPDX-License-Identifier: GPL-2.0 |
| #define __NO_FORTIFY |
| #include <linux/types.h> |
| #include <linux/module.h> |
| |
| /* |
| * This file exports some critical string functions and compiler |
| * built-in functions (where calls are emitted by the compiler |
| * itself that we cannot avoid even in kernel code) to modules. |
| * |
| * "_user.c" code that previously used exports here such as hostfs |
| * really should be considered part of the 'hypervisor' and define |
| * its own API boundary like hostfs does now; don't add exports to |
| * this file for such cases. |
| */ |
| |
| /* If it's not defined, the export is included in lib/string.c.*/ |
| #ifdef __HAVE_ARCH_STRSTR |
| #undef strstr |
| EXPORT_SYMBOL(strstr); |
| #endif |
| |
| #ifndef __x86_64__ |
| #undef memcpy |
| extern void *memcpy(void *, const void *, size_t); |
| EXPORT_SYMBOL(memcpy); |
| extern void *memmove(void *, const void *, size_t); |
| EXPORT_SYMBOL(memmove); |
| #undef memset |
| extern void *memset(void *, int, size_t); |
| EXPORT_SYMBOL(memset); |
| #endif |
| |
| #ifdef CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA |
| /* needed for __access_ok() */ |
| EXPORT_SYMBOL(vsyscall_ehdr); |
| EXPORT_SYMBOL(vsyscall_end); |
| #endif |
| |
| /* Export symbols used by GCC for the stack protector. */ |
| extern void __stack_smash_handler(void *) __attribute__((weak)); |
| EXPORT_SYMBOL(__stack_smash_handler); |
| |
| extern long __guard __attribute__((weak)); |
| EXPORT_SYMBOL(__guard); |
| |
| #ifdef _FORTIFY_SOURCE |
| extern int __sprintf_chk(char *str, int flag, size_t len, const char *format); |
| EXPORT_SYMBOL(__sprintf_chk); |
| #endif |
