linux-kernel - [PATCH/RFC 2/2] lib: string: Make all calls to strnicmp into calls to strncasecmp

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Date:	Wed, 27 Aug 2014 09:36:02 +0200
From:	Rasmus Villemoes <linux@...musvillemoes.dk>
To:	Grant Likely <grant.likely@...aro.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <ak@...ux.intel.com>,
	Dan Carpenter <dan.carpenter@...cle.com>,
	"H. Peter Anvin" <hpa@...ux.intel.com>
Cc:	linux-kernel@...r.kernel.org,
	Rasmus Villemoes <linux@...musvillemoes.dk>
Subject: [PATCH/RFC 2/2] lib: string: Make all calls to strnicmp into calls to strncasecmp

The previous patch made strnicmp into a wrapper for strncasecmp. This
patch makes all in-tree users of strnicmp call strncasecmp directly,
while still making sure that the strnicmp symbol can be used by
out-of-tree modules. It should be considered a temporary hack until
all in-tree callers have been converted.

Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>
---
 include/linux/string.h | 2 +-
 lib/string.c           | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/string.h b/include/linux/string.h
index d36977e..e6edfe5 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -41,7 +41,7 @@ extern int strcmp(const char *,const char *);
 extern int strncmp(const char *,const char *,__kernel_size_t);
 #endif
 #ifndef __HAVE_ARCH_STRNICMP
-extern int strnicmp(const char *, const char *, __kernel_size_t);
+#define strnicmp strncasecmp
 #endif
 #ifndef __HAVE_ARCH_STRCASECMP
 extern int strcasecmp(const char *s1, const char *s2);
diff --git a/lib/string.c b/lib/string.c
index 92c33e1..d171554 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -59,6 +59,7 @@ int strncasecmp(const char *s1, const char *s2, size_t len)
 EXPORT_SYMBOL(strncasecmp);
 #endif
 #ifndef __HAVE_ARCH_STRNICMP
+#undef strnicmp
 int strnicmp(const char *s1, const char *s2, size_t len)
 {
 	return strncasecmp(s1, s2, len);
-- 
2.0.4

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