From c430f60036af44079170ff71a461b9d7cf5ee431 Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@chromium.org>
Date: Wed, 14 Apr 2021 15:45:39 -0700
Subject: fortify: Move remaining fortify helpers into fortify-string.h

When commit a28a6e860c6c ("string.h: move fortified functions definitions
in a dedicated header.") moved the fortify-specific code, some helpers
were left behind. Move the remaining fortify-specific helpers into
fortify-string.h so they're together where they're used. This requires
that any FORTIFY helper function prototypes be conditionally built to
avoid "no prototype" warnings. Additionally removes unused helpers.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Daniel Axtens <dja@axtens.net>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Acked-by: Francis Laniel <laniel_francis@privacyrequired.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
---
 lib/string_helpers.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'lib/string_helpers.c')

diff --git a/lib/string_helpers.c b/lib/string_helpers.c
index bde13612c25d..faa9d8e4e2c5 100644
--- a/lib/string_helpers.c
+++ b/lib/string_helpers.c
@@ -883,9 +883,11 @@ char *strreplace(char *s, char old, char new)
 }
 EXPORT_SYMBOL(strreplace);
 
+#ifdef CONFIG_FORTIFY_SOURCE
 void fortify_panic(const char *name)
 {
 	pr_emerg("detected buffer overflow in %s\n", name);
 	BUG();
 }
 EXPORT_SYMBOL(fortify_panic);
+#endif /* CONFIG_FORTIFY_SOURCE */
-- 
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