[PATCHv2 1/6] string: introduce helper to get base file name from given path

From: Andy Shevchenko
Date: Wed Oct 03 2012 - 04:44:56 EST


There are several places in the kernel that use functionality like basename(3)
with the exception: in case of '/foo/bar/' we expect to get an empty string.
Let's do it common helper for them.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
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

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