[PATCH 1/7] string: introduce helper to get base file name from given path

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

There are several places in kernel that use functionality like shell's basename
function. Let's do it common helper for them.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: YAMANE Toshiaki <yamanetoshi@gmail.com>
---
 include/linux/string.h |   11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/linux/string.h b/include/linux/string.h
index b917881..b09a342 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -147,5 +147,16 @@ static inline bool strstarts(const char *str, const char *prefix)
 
 extern size_t memweight(const void *ptr, size_t bytes);
 
+/**
+ * kbasename - return the last part of a pathname.
+ *
+ * @path: path to extract the filename from.
+ */
+static inline const char *kbasename(const char *path)
+{
+	const char *tail = strrchr(path, '/');
+	return tail ? tail + 1 : path;
+}
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_STRING_H_ */
-- 
1.7.10.4