chunkd self-check question

[Pete Zaitcev <zaitcev@redhat.com>]

I need a way to scan all objects that an Chunk node keeps. There's
a function that does it already: fs_list_objs. Looking at it, is there
a reason why it uses readdir instead of tchdbiternext? In case of
self-checking, scanning directories is undesirable, because if an
object somehow (e.g. a hardware failure) ends existing in filesystem
but without a corresponding entry in the TC database, it will incorrectly
count as present.

-- Pete