From 7c7361b98d6eadcbcde556763b6d40a686f4bd3d Mon Sep 17 00:00:00 2001
From: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Date: Mon, 3 Feb 2025 10:12:00 +0100
Subject: lib: implement strnstr()

Implement library function strnstr().
Implement strstr() using strnstr().
Sort the includes.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
[jf: replace <stdint.h> by <limits.h>, folded from next patch]
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
---
 include/linux/string.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'include/linux/string.h')

diff --git a/include/linux/string.h b/include/linux/string.h
index 27b2beb9ddb..d943fcce690 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -72,6 +72,9 @@ extern char * strrchr(const char *,int);
 #ifndef __HAVE_ARCH_STRSTR
 extern char * strstr(const char *,const char *);
 #endif
+#ifndef __HAVE_ARCH_STRNSTR
+extern char *strnstr(const char *, const char *, size_t);
+#endif
 #ifndef __HAVE_ARCH_STRLEN
 extern __kernel_size_t strlen(const char *);
 #endif
-- 
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