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-rw-r--r--include/linux/string.h3
1 files changed, 3 insertions, 0 deletions
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