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