Symbol: SFF_NBLOCK
usr/src/cmd/sendmail/libsmutil/safefile.c
967
if (bitset(SFF_NBLOCK, sff))
usr/src/cmd/sendmail/src/util.c
587
sff = SFF_NOLINK|SFF_ROOTOK|SFF_REGONLY|SFF_CREAT|SFF_NBLOCK;