• Serge Hallyn's avatar
    kernfs_path_from_node_locked: don't overwrite nlen · e99ed4de
    Serge Hallyn authored
    We've calculated @len to be the bytes we need for '/..' entries from
    @kn_from to the common ancestor, and calculated @nlen to be the extra
    bytes we need to get from the common ancestor to @kn_to.  We use them
    as such at the end.  But in the loop copying the actual entries, we
    overwrite @nlen.  Use a temporary variable for that instead.
    
    Without this, the return length, when the buffer is large enough, is
    wrong.  (When the buffer is NULL or too small, the returned value is
    correct. The buffer contents are also correct.)
    
    Interestingly, no callers of this function are affected by this as of
    yet.  However the upcoming cgroup_show_path() will be.
    Signed-off-by: default avatarSerge Hallyn <serge.hallyn@ubuntu.com>
    e99ed4de
dir.c 41.1 KB