Annotation of src/sys/sys/socket.h, Revision 1.19.4.2
1.19.4.2! is 1: /* $NetBSD: socket.h,v 1.19 1997/02/11 17:47:44 is Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
! 5: * The Regents of the University of California. All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: * 3. All advertising materials mentioning features or use of this software
! 16: * must display the following acknowledgement:
! 17: * This product includes software developed by the University of
! 18: * California, Berkeley and its contributors.
! 19: * 4. Neither the name of the University nor the names of its contributors
! 20: * may be used to endorse or promote products derived from this software
! 21: * without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 33: * SUCH DAMAGE.
! 34: *
! 35: * @(#)socket.h 8.4 (Berkeley) 2/21/94
! 36: */
! 37:
! 38: #ifndef _SYS_SOCKET_H_
! 39: #define _SYS_SOCKET_H_
! 40:
! 41: /*
! 42: * Definitions related to sockets: types, address families, options.
! 43: */
! 44:
! 45: /*
! 46: * Types
! 47: */
! 48: #define SOCK_STREAM 1 /* stream socket */
! 49: #define SOCK_DGRAM 2 /* datagram socket */
! 50: #define SOCK_RAW 3 /* raw-protocol interface */
! 51: #define SOCK_RDM 4 /* reliably-delivered message */
! 52: #define SOCK_SEQPACKET 5 /* sequenced packet stream */
! 53:
! 54: /*
! 55: * Option flags per-socket.
! 56: */
! 57: #define SO_DEBUG 0x0001 /* turn on debugging info recording */
! 58: #define SO_ACCEPTCONN 0x0002 /* socket has had listen() */
! 59: #define SO_REUSEADDR 0x0004 /* allow local address reuse */
! 60: #define SO_KEEPALIVE 0x0008 /* keep connections alive */
! 61: #define SO_DONTROUTE 0x0010 /* just use interface addresses */
! 62: #define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */
! 63: #define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */
! 64: #define SO_LINGER 0x0080 /* linger on close if data present */
! 65: #define SO_OOBINLINE 0x0100 /* leave received OOB data in line */
! 66: #define SO_REUSEPORT 0x0200 /* allow local address & port reuse */
! 67: #define SO_TIMESTAMP 0x0400 /* timestamp received dgram traffic */
! 68:
! 69: /*
! 70: * Additional options, not kept in so_options.
! 71: */
! 72: #define SO_SNDBUF 0x1001 /* send buffer size */
! 73: #define SO_RCVBUF 0x1002 /* receive buffer size */
! 74: #define SO_SNDLOWAT 0x1003 /* send low-water mark */
! 75: #define SO_RCVLOWAT 0x1004 /* receive low-water mark */
! 76: #define SO_SNDTIMEO 0x1005 /* send timeout */
! 77: #define SO_RCVTIMEO 0x1006 /* receive timeout */
! 78: #define SO_ERROR 0x1007 /* get error status and clear */
! 79: #define SO_TYPE 0x1008 /* get socket type */
! 80:
! 81: /*
! 82: * Structure used for manipulating linger option.
! 83: */
! 84: struct linger {
! 85: int l_onoff; /* option on/off */
! 86: int l_linger; /* linger time */
! 87: };
! 88:
! 89: /*
! 90: * Level number for (get/set)sockopt() to apply to socket itself.
! 91: */
! 92: #define SOL_SOCKET 0xffff /* options for socket level */
! 93:
! 94: /*
! 95: * Address families.
! 96: */
! 97: #define AF_UNSPEC 0 /* unspecified */
! 98: #define AF_LOCAL 1 /* local to host (pipes, portals) */
! 99: #define AF_UNIX AF_LOCAL /* backward compatibility */
! 100: #define AF_INET 2 /* internetwork: UDP, TCP, etc. */
! 101: #define AF_IMPLINK 3 /* arpanet imp addresses */
! 102: #define AF_PUP 4 /* pup protocols: e.g. BSP */
! 103: #define AF_CHAOS 5 /* mit CHAOS protocols */
! 104: #define AF_NS 6 /* XEROX NS protocols */
! 105: #define AF_ISO 7 /* ISO protocols */
! 106: #define AF_OSI AF_ISO
! 107: #define AF_ECMA 8 /* european computer manufacturers */
! 108: #define AF_DATAKIT 9 /* datakit protocols */
! 109: #define AF_CCITT 10 /* CCITT protocols, X.25 etc */
! 110: #define AF_SNA 11 /* IBM SNA */
! 111: #define AF_DECnet 12 /* DECnet */
! 112: #define AF_DLI 13 /* DEC Direct data link interface */
! 113: #define AF_LAT 14 /* LAT */
! 114: #define AF_HYLINK 15 /* NSC Hyperchannel */
! 115: #define AF_APPLETALK 16 /* Apple Talk */
! 116: #define AF_ROUTE 17 /* Internal Routing Protocol */
! 117: #define AF_LINK 18 /* Link layer interface */
! 118: #define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */
! 119: #define AF_COIP 20 /* connection-oriented IP, aka ST II */
! 120: #define AF_CNT 21 /* Computer Network Technology */
! 121: #define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */
! 122: #define AF_IPX 23 /* Novell Internet Protocol */
! 123: #define AF_SIP 24 /* Simple Internet Protocol */
! 124: #define pseudo_AF_PIP 25 /* Help Identify PIP packets */
! 125: #define AF_ISDN 26 /* Integrated Services Digital Network*/
! 126: #define AF_E164 AF_ISDN /* CCITT E.164 recommendation */
! 127: #define AF_NATM 27 /* native ATM access */
! 128: #define AF_ARP 28 /* (rev.) addr. res. prot. (RFC 826) */
! 129:
! 130: #define AF_MAX 29
! 131:
! 132: /*
! 133: * Structure used by kernel to store most
! 134: * addresses.
! 135: */
! 136: struct sockaddr {
! 137: u_char sa_len; /* total length */
! 138: u_char sa_family; /* address family */
! 139: char sa_data[14]; /* actually longer; address value */
! 140: };
! 141:
! 142: /*
! 143: * Structure used by kernel to pass protocol
! 144: * information in raw sockets.
! 145: */
! 146: struct sockproto {
! 147: u_short sp_family; /* address family */
! 148: u_short sp_protocol; /* protocol */
! 149: };
! 150:
! 151: /*
! 152: * Protocol families, same as address families for now.
! 153: */
! 154: #define PF_UNSPEC AF_UNSPEC
! 155: #define PF_LOCAL AF_LOCAL
! 156: #define PF_UNIX PF_LOCAL /* backward compatibility */
! 157: #define PF_INET AF_INET
! 158: #define PF_IMPLINK AF_IMPLINK
! 159: #define PF_PUP AF_PUP
! 160: #define PF_CHAOS AF_CHAOS
! 161: #define PF_NS AF_NS
! 162: #define PF_ISO AF_ISO
! 163: #define PF_OSI AF_ISO
! 164: #define PF_ECMA AF_ECMA
! 165: #define PF_DATAKIT AF_DATAKIT
! 166: #define PF_CCITT AF_CCITT
! 167: #define PF_SNA AF_SNA
! 168: #define PF_DECnet AF_DECnet
! 169: #define PF_DLI AF_DLI
! 170: #define PF_LAT AF_LAT
! 171: #define PF_HYLINK AF_HYLINK
! 172: #define PF_APPLETALK AF_APPLETALK
! 173: #define PF_ROUTE AF_ROUTE
! 174: #define PF_LINK AF_LINK
! 175: #define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */
! 176: #define PF_COIP AF_COIP
! 177: #define PF_CNT AF_CNT
! 178: #define PF_SIP AF_SIP
! 179: #define PF_IPX AF_IPX /* same format as AF_NS */
! 180: #define PF_RTIP pseudo_AF_FTIP /* same format as AF_INET */
! 181: #define PF_PIP pseudo_AF_PIP
! 182: #define PF_NATM AF_NATM
! 183: #define PF_ARP AF_ARP
! 184:
! 185: #define PF_MAX AF_MAX
! 186:
! 187: /*
! 188: * Definitions for network related sysctl, CTL_NET.
! 189: *
! 190: * Second level is protocol family.
! 191: * Third level is protocol number.
! 192: *
! 193: * Further levels are defined by the individual families below.
! 194: */
! 195: #define NET_MAXID AF_MAX
! 196:
! 197: #define CTL_NET_NAMES { \
! 198: { 0, 0 }, \
! 199: { "unix", CTLTYPE_NODE }, \
! 200: { "inet", CTLTYPE_NODE }, \
! 201: { "implink", CTLTYPE_NODE }, \
! 202: { "pup", CTLTYPE_NODE }, \
! 203: { "chaos", CTLTYPE_NODE }, \
! 204: { "xerox_ns", CTLTYPE_NODE }, \
! 205: { "iso", CTLTYPE_NODE }, \
! 206: { "emca", CTLTYPE_NODE }, \
! 207: { "datakit", CTLTYPE_NODE }, \
! 208: { "ccitt", CTLTYPE_NODE }, \
! 209: { "ibm_sna", CTLTYPE_NODE }, \
! 210: { "decnet", CTLTYPE_NODE }, \
! 211: { "dec_dli", CTLTYPE_NODE }, \
! 212: { "lat", CTLTYPE_NODE }, \
! 213: { "hylink", CTLTYPE_NODE }, \
! 214: { "appletalk", CTLTYPE_NODE }, \
! 215: { "route", CTLTYPE_NODE }, \
! 216: { "link_layer", CTLTYPE_NODE }, \
! 217: { "xtp", CTLTYPE_NODE }, \
! 218: { "coip", CTLTYPE_NODE }, \
! 219: { "cnt", CTLTYPE_NODE }, \
! 220: { "rtip", CTLTYPE_NODE }, \
! 221: { "ipx", CTLTYPE_NODE }, \
! 222: { "sip", CTLTYPE_NODE }, \
! 223: { "pip", CTLTYPE_NODE }, \
! 224: { "natm", CTLTYPE_NODE }, \
! 225: }
! 226:
! 227: /*
! 228: * PF_ROUTE - Routing table
! 229: *
! 230: * Three additional levels are defined:
! 231: * Fourth: address family, 0 is wildcard
! 232: * Fifth: type of info, defined below
! 233: * Sixth: flag(s) to mask with for NET_RT_FLAGS
! 234: */
! 235: #define NET_RT_DUMP 1 /* dump; may limit to a.f. */
! 236: #define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */
! 237: #define NET_RT_IFLIST 3 /* survey interface list */
! 238: #define NET_RT_MAXID 4
! 239:
! 240: #define CTL_NET_RT_NAMES { \
! 241: { 0, 0 }, \
! 242: { "dump", CTLTYPE_STRUCT }, \
! 243: { "flags", CTLTYPE_STRUCT }, \
! 244: { "iflist", CTLTYPE_STRUCT }, \
! 245: }
! 246:
! 247: /*
! 248: * Maximum queue length specifiable by listen(2).
! 249: */
! 250:
! 251: #define SOMAXCONN 128
! 252:
! 253: /*
! 254: * Message header for recvmsg and sendmsg calls.
! 255: * Used value-result for recvmsg, value only for sendmsg.
! 256: */
! 257: struct msghdr {
! 258: caddr_t msg_name; /* optional address */
! 259: u_int msg_namelen; /* size of address */
! 260: struct iovec *msg_iov; /* scatter/gather array */
! 261: u_int msg_iovlen; /* # elements in msg_iov */
! 262: caddr_t msg_control; /* ancillary data, see below */
! 263: u_int msg_controllen; /* ancillary data buffer len */
! 264: int msg_flags; /* flags on received message */
! 265: };
! 266:
! 267: #define MSG_OOB 0x1 /* process out-of-band data */
! 268: #define MSG_PEEK 0x2 /* peek at incoming message */
! 269: #define MSG_DONTROUTE 0x4 /* send without using routing tables */
! 270: #define MSG_EOR 0x8 /* data completes record */
! 271: #define MSG_TRUNC 0x10 /* data discarded before delivery */
! 272: #define MSG_CTRUNC 0x20 /* control data lost before delivery */
! 273: #define MSG_WAITALL 0x40 /* wait for full request or error */
! 274: #define MSG_DONTWAIT 0x80 /* this message should be nonblocking */
! 275:
! 276: /*
! 277: * Header for ancillary data objects in msg_control buffer.
! 278: * Used for additional information with/about a datagram
! 279: * not expressible by flags. The format is a sequence
! 280: * of message elements headed by cmsghdr structures.
! 281: */
! 282: struct cmsghdr {
! 283: u_int cmsg_len; /* data byte count, including hdr */
! 284: int cmsg_level; /* originating protocol */
! 285: int cmsg_type; /* protocol-specific type */
! 286: /* followed by u_char cmsg_data[]; */
! 287: };
! 288:
! 289: /* given pointer to struct cmsghdr, return pointer to data */
! 290: #define CMSG_DATA(cmsg) ((u_char *)((cmsg) + 1))
! 291:
! 292: /* given pointer to struct cmsghdr, return pointer to next cmsghdr */
! 293: #define CMSG_NXTHDR(mhdr, cmsg) \
! 294: (((caddr_t)(cmsg) + (cmsg)->cmsg_len + sizeof(struct cmsghdr) > \
! 295: (mhdr)->msg_control + (mhdr)->msg_controllen) ? \
! 296: (struct cmsghdr *)NULL : \
! 297: (struct cmsghdr *)((caddr_t)(cmsg) + ALIGN((cmsg)->cmsg_len)))
! 298:
! 299: #define CMSG_FIRSTHDR(mhdr) ((struct cmsghdr *)(mhdr)->msg_control)
! 300:
! 301: /* "Socket"-level control message types: */
! 302: #define SCM_RIGHTS 0x01 /* access rights (array of int) */
! 303: #define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */
! 304:
! 305: /*
! 306: * 4.3 compat sockaddr, move to compat file later
! 307: */
! 308: struct osockaddr {
! 309: u_short sa_family; /* address family */
! 310: char sa_data[14]; /* up to 14 bytes of direct address */
! 311: };
! 312:
! 313: /*
! 314: * 4.3-compat message header (move to compat file later).
! 315: */
! 316: struct omsghdr {
! 317: caddr_t msg_name; /* optional address */
! 318: int msg_namelen; /* size of address */
! 319: struct iovec *msg_iov; /* scatter/gather array */
! 320: int msg_iovlen; /* # elements in msg_iov */
! 321: caddr_t msg_accrights; /* access rights sent/received */
! 322: int msg_accrightslen;
! 323: };
! 324:
! 325: #ifndef _KERNEL
! 326:
! 327: #include <sys/cdefs.h>
! 328:
! 329: __BEGIN_DECLS
! 330: int accept __P((int, struct sockaddr *, int *));
! 331: int bind __P((int, const struct sockaddr *, int));
! 332: int connect __P((int, const struct sockaddr *, int));
! 333: int getpeername __P((int, struct sockaddr *, int *));
! 334: int getsockname __P((int, struct sockaddr *, int *));
! 335: int getsockopt __P((int, int, int, void *, int *));
! 336: int listen __P((int, int));
! 337: ssize_t recv __P((int, void *, size_t, int));
! 338: ssize_t recvfrom __P((int, void *, size_t, int, struct sockaddr *, int *));
! 339: ssize_t recvmsg __P((int, struct msghdr *, int));
! 340: ssize_t send __P((int, const void *, size_t, int));
! 341: ssize_t sendto __P((int, const void *,
! 342: size_t, int, const struct sockaddr *, int));
! 343: ssize_t sendmsg __P((int, const struct msghdr *, int));
! 344: int setsockopt __P((int, int, int, const void *, int));
! 345: int shutdown __P((int, int));
! 346: int socket __P((int, int, int));
! 347: int socketpair __P((int, int, int, int *));
! 348: __END_DECLS
! 349: #else
! 350: # if defined(COMPAT_43) || defined(COMPAT_SUNOS) || defined(COMPAT_LINUX) || \
! 351: defined(COMPAT_HPUX) || defined(COMPAT_FREEBSD)
! 352: # define COMPAT_OLDSOCK
! 353: # define MSG_COMPAT 0x8000
! 354: # endif
! 355: #endif /* !_KERNEL */
! 356:
! 357: #endif /* !_SYS_SOCKET_H_ */
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