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