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| author | Kefeng Wang <wangkefeng.wang@huawei.com> | 2021-02-25 08:03:03 +0100 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2021-03-10 03:18:31 +0100 |
| commit | 9530141455c968938a913d602a236c2a7b0322e1 (patch) | |
| tree | 6f4da9f0d64521493129809c7e9b7b2787a09b34 /arch/riscv | |
| parent | riscv: Add support for memtest (diff) | |
| download | linux-9530141455c968938a913d602a236c2a7b0322e1.tar.xz linux-9530141455c968938a913d602a236c2a7b0322e1.zip | |
riscv: Add ARCH_HAS_FORTIFY_SOURCE
FORTIFY_SOURCE could detect various overflows at compile and run time.
ARCH_HAS_FORTIFY_SOURCE means that the architecture can be built and
run with CONFIG_FORTIFY_SOURCE. Select it in RISCV.
See more about this feature from commit 6974f0c4555e
("include/linux/string.h: add the option of fortified string.h functions").
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/Kconfig | 1 | ||||
| -rw-r--r-- | arch/riscv/include/asm/string.h | 5 |
2 files changed, 6 insertions, 0 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 85d626b8ce5e..6978b0739718 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -20,6 +20,7 @@ config RISCV select ARCH_HAS_DEBUG_VM_PGTABLE select ARCH_HAS_DEBUG_VIRTUAL if MMU select ARCH_HAS_DEBUG_WX + select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_GIGANTIC_PAGE select ARCH_HAS_KCOV diff --git a/arch/riscv/include/asm/string.h b/arch/riscv/include/asm/string.h index 5477e7ecb6e1..909049366555 100644 --- a/arch/riscv/include/asm/string.h +++ b/arch/riscv/include/asm/string.h @@ -23,5 +23,10 @@ extern asmlinkage void *__memmove(void *, const void *, size_t); #define memcpy(dst, src, len) __memcpy(dst, src, len) #define memset(s, c, n) __memset(s, c, n) #define memmove(dst, src, len) __memmove(dst, src, len) + +#ifndef __NO_FORTIFY +#define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */ +#endif + #endif #endif /* _ASM_RISCV_STRING_H */ |