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string: introduce helper to get base file name from given path

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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@linux.intel.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: YAMANE Toshiaki <yamanetoshi@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andy Shevchenko 2012-12-17 16:01:18 -08:00 committed by Linus Torvalds
parent 0edd807dc9
commit b18888ab25
1 changed files with 11 additions and 0 deletions
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11
include/linux/string.h
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@ -143,4 +143,15 @@ static inline bool strstarts(const char *str, const char *prefix)
extern size_t memweight(const void *ptr, size_t bytes); 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_ */ #endif /* _LINUX_STRING_H_ */