PND_INREADDIR
while (pnd->pnd_flags & PND_INREADDIR)
pnd->pnd_flags |= PND_INREADDIR;
pnd->pnd_flags &= ~PND_INREADDIR;
pnd->pnd_flags & PND_INREADDIR ? " readdir" : "",
#define PND_BUSY (PND_INREADDIR|PND_INWRITE|PND_INOPEN)