C_OPEN_0
i = (flags & C_OPEN_0) ? 6 : 5;
n = i + ((flags & C_OPEN_0) != 0);
if ((flags & C_OPEN_0) &&
open = cbp->c_flags & C_OPEN_0;
ncbp->c_flags = (ocb.c.b) ? C_OPEN_0 : 0;