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authorKees Cook <keescook@chromium.org>2021-06-18 10:57:38 -0700
committerKees Cook <keescook@chromium.org>2021-09-25 08:20:49 -0700
commitcfecea6ead5f15880fc1fb31fc655f8be5cf7424 (patch)
tree331af507e9084ca106a9a225aa3b166bde9605a9 /arch/s390/lib/string.c
parentc80d92fbb67b2c80b8eeb8759ee79d676eb33520 (diff)
lib/string: Move helper functions out of string.c
The core functions of string.c are those that may be implemented by per-architecture functions, or overloaded by FORTIFY_SOURCE. As a result, it needs to be built with __NO_FORTIFY. Without this, macros will collide with function declarations. This was accidentally working due to -ffreestanding (on some architectures). Make this deterministic by explicitly setting __NO_FORTIFY and move all the helper functions into string_helpers.c so that they gain the fortification coverage they had been missing. Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Andy Lavr <andy.lavr@gmail.com> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'arch/s390/lib/string.c')
-rw-r--r--arch/s390/lib/string.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/lib/string.c b/arch/s390/lib/string.c
index cfcdf76d6a95..392fb9f4f4db 100644
--- a/arch/s390/lib/string.c
+++ b/arch/s390/lib/string.c
@@ -8,6 +8,9 @@
*/
#define IN_ARCH_STRING_C 1
+#ifndef __NO_FORTIFY
+# define __NO_FORTIFY
+#endif
#include <linux/types.h>
#include <linux/string.h>

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