Symbol: SM_SENDFILESUPP
usr/src/uts/common/fs/sockfs/socktpi.c
519
so->so_mode |= SM_SENDFILESUPP;
usr/src/uts/common/inet/tcp/tcp_socket.c
795
SM_SENDFILESUPP;
usr/src/uts/common/syscall/sendfile.c
1187
if ((so->so_mode & SM_SENDFILESUPP) == 0) {