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kernfs: update comment about kernfs_path() return value 

Now it returns the length of the full path or error code.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Fixes: 3abb1d90f5 ("kernfs: make kernfs_path*() behave in the style of strlcpy()")
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Konstantin Khlebnikov 2018-08-13 09:52:09 +03:00 committed by Greg Kroah-Hartman
parent 7876320f88
commit 8f5be0ec23
1 changed files with 5 additions and 4 deletions
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9
include/linux/kernfs.h
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@ -477,10 +477,11 @@ static inline void kernfs_init(void) { }
* @buf: buffer to copy @kn's name into
* @buflen: size of @buf
*
* Builds and returns the full path of @kn in @buf of @buflen bytes. The
* path is built from the end of @buf so the returned pointer usually
* doesn't match @buf. If @buf isn't long enough, @buf is nul terminated
* and %NULL is returned.
* If @kn is NULL result will be "(null)".
*
* Returns the length of the full path. If the full length is equal to or
* greater than @buflen, @buf contains the truncated path with the trailing
* '\0'. On error, -errno is returned.
*/
static inline int kernfs_path(struct kernfs_node *kn, char *buf, size_t buflen)
{