F_RDDNY
case F_RDDNY:
shr.s_deny |= F_RDDNY;
deny |= F_RDDNY;
case F_RDDNY:
shr->s_deny = F_RDDNY;
(shr->s_deny & F_RDDNY) ||
(shrl->shr->s_deny & F_RDDNY) ||
if (shr->s_deny & F_RDDNY)
if (shrl->shr->s_deny & F_RDDNY)
if (shr->s_deny & ~(F_NODNY|F_RDDNY|F_WRDNY|F_RWDNY|F_COMPAT|