linux-kernel - [PATCHv3 1/6] lib/string: introduce helper to get base file name from given path

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Message-Id: <1350388094-18805-2-git-send-email-andriy.shevchenko@linux.intel.com>
Date:	Tue, 16 Oct 2012 14:48:08 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Joe Perches <joe@...ches.com>
Cc:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Jason Baron <jbaron@...hat.com>,
	YAMANE Toshiaki <yamanetoshi@...il.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-mm@...ck.org, Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: [PATCHv3 1/6] lib/string: introduce helper to get base file name from given path

There are several places in the kernel that use functionality like basename(3)
with an 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@...ux.intel.com>
Cc: Jason Baron <jbaron@...hat.com>
Cc: YAMANE Toshiaki <yamanetoshi@...il.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-mm@...ck.org
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Frederic Weisbecker <fweisbec@...il.com>
---
 include/linux/string.h |   11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/linux/string.h b/include/linux/string.h
index 6301258..ac889c5 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -143,4 +143,15 @@ 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 /* _LINUX_STRING_H_ */
-- 
1.7.10.4

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