Commit 8f5be0ec authored by Konstantin Khlebnikov's avatar Konstantin Khlebnikov Committed by Greg Kroah-Hartman
Browse files

kernfs: update comment about kernfs_path() return value 



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

Signed-off-by: default avatarKonstantin Khlebnikov <khlebnikov@yandex-team.ru>
Fixes: 3abb1d90 ("kernfs: make kernfs_path*() behave in the style of strlcpy()")
Acked-by: default avatarTejun Heo <tj@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 7876320f

include/linux/kernfs.h

+5 −4
Original line number Diff line number Diff line
@@ -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)

{

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