C_UNBLOCK
C_UNBLOCK | C_OSYNC | C_ASCII | C_EBCDIC | C_SPARSE)) {
if (ddflags & (C_BLOCK|C_UNBLOCK)) {
ddflags |= C_UNBLOCK;
{ "block", C_BLOCK, C_UNBLOCK, NULL },
{ "unblock", C_UNBLOCK, C_BLOCK, NULL },
if (!(ddflags & (C_BLOCK|C_UNBLOCK))) {
if (flags & (C_BLOCK|C_UNBLOCK))