C_SYNC
{ "fullblock", C_IFULLBLOCK, C_SYNC },
{ "sync", C_SYNC, C_IFULLBLOCK, NULL },
if (ddflags & C_SYNC) {
if (!(ddflags & C_SYNC))
if (ddflags & C_SYNC)
if ((ddflags & ~(C_NOERROR | C_NOTRUNC | C_SYNC)) == C_BS) {