taglinefilesource code
keepopen607net/inet/af_inet.csk->keepopen = 0;
keepopen184net/inet/sock.csk->keepopen = 1;
keepopen186net/inet/sock.csk->keepopen = 0;
keepopen267net/inet/sock.cval = sk->keepopen;
keepopen81net/inet/sock.hkeepopen,
keepopen889net/inet/tcp.cif(sk->keepopen) {
keepopen1005net/inet/tcp.cif (sk->keepopen) 
keepopen2263net/inet/tcp.csk->keepopen = 1;
keepopen2565net/inet/tcp.cif (sk->keepopen) 
keepopen2895net/inet/tcp.c} else if (sk->keepopen) {
keepopen2904net/inet/tcp.csk->state != TCP_TIME_WAIT && !sk->keepopen) 
keepopen2908net/inet/tcp.cif (sk->keepopen) {
keepopen2916net/inet/tcp.cif (sk->state != (unsigned char) sk->keepopen)