1 /* 2 * Copyright (c) 1982,1985,1986,1988 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 * 17 * @(#)socket.h 7.4 (Berkeley) 10/12/88 18 */ 19 20 /* 21 * Definitions related to sockets: types, address families, options. 22 */ 23 24 /* 25 * Types 26 */ 27 #define SOCK_STREAM 1 /* stream socket */ 28 #define SOCK_DGRAM 2 /* datagram socket */ 29 #define SOCK_RAW 3 /* raw-protocol interface */ 30 #define SOCK_RDM 4 /* reliably-delivered message */ 31 #define SOCK_SEQPACKET 5 /* sequenced packet stream */ 32 33 /* 34 * Option flags per-socket. 35 */ 36 #define SO_DEBUG 0x0001 /* turn on debugging info recording */ 37 #define SO_ACCEPTCONN 0x0002 /* socket has had listen() */ 38 #define SO_REUSEADDR 0x0004 /* allow local address reuse */ 39 #define SO_KEEPALIVE 0x0008 /* keep connections alive */ 40 #define SO_DONTROUTE 0x0010 /* just use interface addresses */ 41 #define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */ 42 #define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */ 43 #define SO_LINGER 0x0080 /* linger on close if data present */ 44 #define SO_OOBINLINE 0x0100 /* leave received OOB data in line */ 45 46 /* 47 * Additional options, not kept in so_options. 48 */ 49 #define SO_SNDBUF 0x1001 /* send buffer size */ 50 #define SO_RCVBUF 0x1002 /* receive buffer size */ 51 #define SO_SNDLOWAT 0x1003 /* send low-water mark */ 52 #define SO_RCVLOWAT 0x1004 /* receive low-water mark */ 53 #define SO_SNDTIMEO 0x1005 /* send timeout */ 54 #define SO_RCVTIMEO 0x1006 /* receive timeout */ 55 #define SO_ERROR 0x1007 /* get error status and clear */ 56 #define SO_TYPE 0x1008 /* get socket type */ 57 58 /* 59 * Structure used for manipulating linger option. 60 */ 61 struct linger { 62 int l_onoff; /* option on/off */ 63 int l_linger; /* linger time */ 64 }; 65 66 /* 67 * Level number for (get/set)sockopt() to apply to socket itself. 68 */ 69 #define SOL_SOCKET 0xffff /* options for socket level */ 70 71 /* 72 * Address families. 73 */ 74 #define AF_UNSPEC 0 /* unspecified */ 75 #define AF_UNIX 1 /* local to host (pipes, portals) */ 76 #define AF_INET 2 /* internetwork: UDP, TCP, etc. */ 77 #define AF_IMPLINK 3 /* arpanet imp addresses */ 78 #define AF_PUP 4 /* pup protocols: e.g. BSP */ 79 #define AF_CHAOS 5 /* mit CHAOS protocols */ 80 #define AF_NS 6 /* XEROX NS protocols */ 81 #define AF_NBS 7 /* nbs protocols */ 82 #define AF_ECMA 8 /* european computer manufacturers */ 83 #define AF_DATAKIT 9 /* datakit protocols */ 84 #define AF_CCITT 10 /* CCITT protocols, X.25 etc */ 85 #define AF_SNA 11 /* IBM SNA */ 86 #define AF_DECnet 12 /* DECnet */ 87 #define AF_DLI 13 /* Direct data link interface */ 88 #define AF_LAT 14 /* LAT */ 89 #define AF_HYLINK 15 /* NSC Hyperchannel */ 90 #define AF_APPLETALK 16 /* Apple Talk */ 91 92 #define AF_MAX 17 93 94 /* 95 * Structure used by kernel to store most 96 * addresses. 97 */ 98 #ifdef notyet 99 struct sockaddr { 100 u_char sa_len; /* total length */ 101 u_char sa_family; /* address family */ 102 char sa_addr[1]; /* actually longer; address value */ 103 }; 104 #else 105 struct sockaddr { 106 u_short sa_family; /* address family */ 107 char sa_data[14]; /* up to 14 bytes of direct address */ 108 }; 109 #endif 110 111 /* 112 * Structure used by kernel to pass protocol 113 * information in raw sockets. 114 */ 115 struct sockproto { 116 u_short sp_family; /* address family */ 117 u_short sp_protocol; /* protocol */ 118 }; 119 120 /* 121 * Protocol families, same as address families for now. 122 */ 123 #define PF_UNSPEC AF_UNSPEC 124 #define PF_UNIX AF_UNIX 125 #define PF_INET AF_INET 126 #define PF_IMPLINK AF_IMPLINK 127 #define PF_PUP AF_PUP 128 #define PF_CHAOS AF_CHAOS 129 #define PF_NS AF_NS 130 #define PF_NBS AF_NBS 131 #define PF_ECMA AF_ECMA 132 #define PF_DATAKIT AF_DATAKIT 133 #define PF_CCITT AF_CCITT 134 #define PF_SNA AF_SNA 135 #define PF_DECnet AF_DECnet 136 #define PF_DLI AF_DLI 137 #define PF_LAT AF_LAT 138 #define PF_HYLINK AF_HYLINK 139 #define PF_APPLETALK AF_APPLETALK 140 141 #define PF_MAX AF_MAX 142 143 /* 144 * Maximum queue length specifiable by listen. 145 */ 146 #define SOMAXCONN 5 147 148 /* 149 * Message header for recvmsg and sendmsg calls. 150 * Used value-result for recvmsg, value only for sendmsg. 151 */ 152 struct msghdr { 153 caddr_t msg_name; /* optional address */ 154 int msg_namelen; /* size of address */ 155 struct iovec *msg_iov; /* scatter/gather array */ 156 int msg_iovlen; /* # elements in msg_iov */ 157 caddr_t msg_accrights; /* access rights sent/received */ 158 int msg_accrightslen; 159 caddr_t msg_control; /* ancillary data not conveyable 160 * by flags; msgs of the form 161 * u_short type; 162 * u_short count; 163 * u_char data[count]; 164 */ 165 int msg_controllen; 166 int msg_flags; /* flags on received message */ 167 }; 168 169 #define MSG_OOB 0x1 /* process out-of-band data */ 170 #define MSG_PEEK 0x2 /* peek at incoming message */ 171 #define MSG_DONTROUTE 0x4 /* send without using routing tables */ 172 #define MSG_EOR 0x8 /* data completes record */ 173 #define MSG_TRUNC 0x10 /* data discarded before delivery */ 174 #define MSG_CTRUNC 0x20 /* control data lost before delivery */ 175 176 /* 177 * 4.3-compat message header (move to compat file later). 178 */ 179 struct omsghdr { 180 caddr_t msg_name; /* optional address */ 181 int msg_namelen; /* size of address */ 182 struct iovec *msg_iov; /* scatter/gather array */ 183 int msg_iovlen; /* # elements in msg_iov */ 184 caddr_t msg_accrights; /* access rights sent/received */ 185 int msg_accrightslen; 186 }; 187 188 #define MSG_MAXIOVLEN 16 189