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 7.5 (Berkeley) 12/13/88 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_ISO 7 /* ISO 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 #define AF_ROUTE 17 /* Internal Routing Protocol */ 92 93 #define AF_MAX 18 94 95 /* 96 * Structure used by kernel to store most 97 * addresses. 98 */ 99 struct sockaddr { 100 u_char sa_len; /* total length */ 101 u_char sa_family; /* address family */ 102 char sa_data[14]; /* actually longer; address value */ 103 }; 104 /* 105 * 4.3 compat sockaddr, move to compat file later 106 */ 107 struct osockaddr { 108 u_short sa_family; /* address family */ 109 char sa_data[14]; /* up to 14 bytes of direct address */ 110 }; 111 112 /* 113 * Structure used by kernel to pass protocol 114 * information in raw sockets. 115 */ 116 struct sockproto { 117 u_short sp_family; /* address family */ 118 u_short sp_protocol; /* protocol */ 119 }; 120 121 /* 122 * Protocol families, same as address families for now. 123 */ 124 #define PF_UNSPEC AF_UNSPEC 125 #define PF_UNIX AF_UNIX 126 #define PF_INET AF_INET 127 #define PF_IMPLINK AF_IMPLINK 128 #define PF_PUP AF_PUP 129 #define PF_CHAOS AF_CHAOS 130 #define PF_NS AF_NS 131 #define PF_ISO AF_ISO 132 #define PF_ECMA AF_ECMA 133 #define PF_DATAKIT AF_DATAKIT 134 #define PF_CCITT AF_CCITT 135 #define PF_SNA AF_SNA 136 #define PF_DECnet AF_DECnet 137 #define PF_DLI AF_DLI 138 #define PF_LAT AF_LAT 139 #define PF_HYLINK AF_HYLINK 140 #define PF_APPLETALK AF_APPLETALK 141 #define PF_ROUTE AF_ROUTE 142 143 #define PF_MAX AF_MAX 144 145 /* 146 * Maximum queue length specifiable by listen. 147 */ 148 #define SOMAXCONN 5 149 150 /* 151 * Message header for recvmsg and sendmsg calls. 152 * Used value-result for recvmsg, value only for sendmsg. 153 */ 154 struct msghdr { 155 caddr_t msg_name; /* optional address */ 156 int msg_namelen; /* size of address */ 157 struct iovec *msg_iov; /* scatter/gather array */ 158 int msg_iovlen; /* # elements in msg_iov */ 159 caddr_t msg_accrights; /* access rights sent/received */ 160 int msg_accrightslen; 161 caddr_t msg_control; /* ancillary data not conveyable 162 * by flags; msgs of the form 163 * u_short type; 164 * u_short count; 165 * u_char data[count]; 166 */ 167 int msg_controllen; 168 int msg_flags; /* flags on received message */ 169 }; 170 171 #define MSG_OOB 0x1 /* process out-of-band data */ 172 #define MSG_PEEK 0x2 /* peek at incoming message */ 173 #define MSG_DONTROUTE 0x4 /* send without using routing tables */ 174 #define MSG_EOR 0x8 /* data completes record */ 175 #define MSG_TRUNC 0x10 /* data discarded before delivery */ 176 #define MSG_CTRUNC 0x20 /* control data lost before delivery */ 177 178 /* 179 * 4.3-compat message header (move to compat file later). 180 */ 181 struct omsghdr { 182 caddr_t msg_name; /* optional address */ 183 int msg_namelen; /* size of address */ 184 struct iovec *msg_iov; /* scatter/gather array */ 185 int msg_iovlen; /* # elements in msg_iov */ 186 caddr_t msg_accrights; /* access rights sent/received */ 187 int msg_accrightslen; 188 }; 189 190 #define MSG_MAXIOVLEN 16 191