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lib: Introduce strnstr()

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It differs strstr() in that it limits the length to be searched
in the first string.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <4B4E8743.6030805@cn.fujitsu.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Li Zefan 2010-01-14 10:53:55 +08:00 • committed by Steven Rostedt
parent a3291c14ec
commit d5f1fb5335
2 changed files with 30 additions and 2 deletions
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5
include/linux/string.h
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@ -72,7 +72,10 @@ static inline __must_check char *strstrip(char *str)
}
#ifndef __HAVE_ARCH_STRSTR
extern char * strstr(const char *,const char *);
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 *);