PF_LOCAL 53 kern/uipc_proto.c { SOCK_STREAM, &unixdomain, PF_LOCAL, PR_CONNREQUIRED|PR_WANTRCVD|PR_RIGHTS, PF_LOCAL 58 kern/uipc_proto.c { SOCK_DGRAM, &unixdomain, PF_LOCAL, PR_ATOMIC|PR_ADDR|PR_RIGHTS, PF_LOCAL 184 sys/socket.h #define PF_UNIX PF_LOCAL /* backward compatibility */