390 lines
13 KiB
C
390 lines
13 KiB
C
/* $NetBSD: socket.h,v 1.107 2012/06/22 18:26:35 christos Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)socket.h 8.6 (Berkeley) 5/3/95
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*/
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#ifndef _SYS_SOCKET_H_
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#define _SYS_SOCKET_H_
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#include <sys/featuretest.h>
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/*
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* Definitions related to sockets: types, address families, options.
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*/
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/*
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* Data types.
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*/
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#include <sys/ansi.h>
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#ifndef sa_family_t
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typedef __sa_family_t sa_family_t;
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#define sa_family_t __sa_family_t
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#endif
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#ifndef socklen_t
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typedef __socklen_t socklen_t;
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#define socklen_t __socklen_t
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#endif
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#include <machine/ansi.h>
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#ifdef _BSD_SIZE_T_
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typedef _BSD_SIZE_T_ size_t;
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#undef _BSD_SIZE_T_
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#endif
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#ifdef _BSD_SSIZE_T_
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typedef _BSD_SSIZE_T_ ssize_t;
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#undef _BSD_SSIZE_T_
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#endif
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#include <sys/uio.h>
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#include <sys/sigtypes.h>
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/*
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* Socket types.
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*/
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#define SOCK_STREAM 1 /* stream socket */
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#define SOCK_DGRAM 2 /* datagram socket */
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#define SOCK_RAW 3 /* raw-protocol interface */
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#define SOCK_RDM 4 /* reliably-delivered message */
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#define SOCK_SEQPACKET 5 /* sequenced packet stream */
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#define SOCK_CLOEXEC 0x10000000 /* set close on exec on socket */
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#define SOCK_NONBLOCK 0x20000000 /* set non blocking i/o socket */
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#define SOCK_NOSIGPIPE 0x40000000 /* don't send sigpipe */
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#define SOCK_FLAGS_MASK 0xf0000000 /* flags mask */
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/*
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* Option flags per-socket.
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*/
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#define SO_DEBUG 0x0001 /* turn on debugging info recording */
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#define SO_ACCEPTCONN 0x0002 /* socket has had listen() */
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#define SO_REUSEADDR 0x0004 /* allow local address reuse */
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#define SO_KEEPALIVE 0x0008 /* keep connections alive */
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#define SO_TYPE 0x0010 /* get socket type */
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#define SO_PASSCRED 0x0012
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#define SO_PEERCRED 0x0014
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/*
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* Additional options, not kept in so_options.
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*/
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#define SO_SNDBUF 0x1001 /* send buffer size */
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#define SO_RCVBUF 0x1002 /* receive buffer size */
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#define SO_SNDLOWAT 0x1003 /* send low-water mark */
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#define SO_RCVLOWAT 0x1004 /* receive low-water mark */
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/* SO_OSNDTIMEO 0x1005 */
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/* SO_ORCVTIMEO 0x1006 */
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#define SO_ERROR 0x1007 /* get error status and clear */
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#define SO_OVERFLOWED 0x1009 /* datagrams: return packets dropped */
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/*
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* Level number for (get/set)sockopt() to apply to socket itself.
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*/
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#define SOL_SOCKET 0xffff /* options for socket level */
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/*
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* Address families.
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*/
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#define AF_UNSPEC 0 /* unspecified */
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#define AF_LOCAL 1 /* local to host */
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#define AF_UNIX AF_LOCAL /* backward compatibility */
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#define AF_INET 2 /* internetwork: UDP, TCP, etc. */
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#define AF_IMPLINK 3 /* arpanet imp addresses */
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#define AF_PUP 4 /* pup protocols: e.g. BSP */
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#define AF_CHAOS 5 /* mit CHAOS protocols */
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#define AF_NS 6 /* XEROX NS protocols */
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#define AF_ISO 7 /* ISO protocols */
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#define AF_OSI AF_ISO
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#define AF_ECMA 8 /* european computer manufacturers */
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#define AF_DATAKIT 9 /* datakit protocols */
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#define AF_CCITT 10 /* CCITT protocols, X.25 etc */
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#define AF_SNA 11 /* IBM SNA */
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#define AF_DECnet 12 /* DECnet */
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#define AF_DLI 13 /* DEC Direct data link interface */
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#define AF_LAT 14 /* LAT */
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#define AF_HYLINK 15 /* NSC Hyperchannel */
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#define AF_APPLETALK 16 /* Apple Talk */
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#define AF_ROUTE 17 /* Internal Routing Protocol */
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#define AF_LINK 18 /* Link layer interface */
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#if defined(_NETBSD_SOURCE)
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#define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */
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#endif
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#define AF_COIP 20 /* connection-oriented IP, aka ST II */
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#define AF_CNT 21 /* Computer Network Technology */
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#if defined(_NETBSD_SOURCE)
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#define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */
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#endif
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#define AF_IPX 23 /* Novell Internet Protocol */
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#define AF_INET6 24 /* IP version 6 */
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#if defined(_NETBSD_SOURCE)
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#define pseudo_AF_PIP 25 /* Help Identify PIP packets */
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#endif
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#define AF_ISDN 26 /* Integrated Services Digital Network*/
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#define AF_E164 AF_ISDN /* CCITT E.164 recommendation */
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#define AF_NATM 27 /* native ATM access */
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#define AF_ARP 28 /* (rev.) addr. res. prot. (RFC 826) */
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#if defined(_NETBSD_SOURCE)
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#define pseudo_AF_KEY 29 /* Internal key management protocol */
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#define pseudo_AF_HDRCMPLT 30 /* Used by BPF to not rewrite hdrs
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in interface output routine */
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#endif
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#define AF_BLUETOOTH 31 /* Bluetooth: HCI, SCO, L2CAP, RFCOMM */
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#define AF_IEEE80211 32 /* IEEE80211 */
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#define AF_MAX 33
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#ifndef gid_t
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typedef __gid_t gid_t; /* group id */
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#define gid_t __gid_t
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#endif
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#ifndef uid_t
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typedef __uid_t uid_t; /* user id */
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#define uid_t __uid_t
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#endif
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#if defined(__minix) && !defined(_STANDALONE)
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#include <sys/ucred.h>
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#endif
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/*
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* Structure used by kernel to store most
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* addresses.
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*/
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struct sockaddr
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{
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sa_family_t sa_family;
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char sa_data[8]; /* Big enough for sockaddr_in */
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};
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/*
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* RFC 2553: protocol-independent placeholder for socket addresses
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*/
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#define _SS_MAXSIZE 128
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#define _SS_ALIGNSIZE (sizeof(__int64_t))
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#define _SS_PAD1SIZE (_SS_ALIGNSIZE - 1)
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#define _SS_PAD2SIZE (_SS_MAXSIZE - 1 - \
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_SS_PAD1SIZE - _SS_ALIGNSIZE)
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#if (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
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struct sockaddr_storage {
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sa_family_t ss_family; /* address family */
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char __ss_pad1[_SS_PAD1SIZE];
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__int64_t __ss_align;/* force desired structure storage alignment */
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char __ss_pad2[_SS_PAD2SIZE];
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};
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#define sstosa(__ss) ((struct sockaddr *)(__ss))
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#define sstocsa(__ss) ((const struct sockaddr *)(__ss))
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#endif /* _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
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/*
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* Protocol families, same as address families for now.
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*/
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#define PF_UNSPEC AF_UNSPEC
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#define PF_LOCAL AF_LOCAL
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#define PF_UNIX PF_LOCAL /* backward compatibility */
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#define PF_FILE PF_LOCAL /* Minix compatibility */
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#define PF_INET AF_INET
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#define PF_IMPLINK AF_IMPLINK
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#define PF_PUP AF_PUP
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#define PF_CHAOS AF_CHAOS
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#define PF_NS AF_NS
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#define PF_ISO AF_ISO
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#define PF_OSI AF_ISO
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#define PF_ECMA AF_ECMA
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#define PF_DATAKIT AF_DATAKIT
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#define PF_CCITT AF_CCITT
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#define PF_SNA AF_SNA
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#define PF_DECnet AF_DECnet
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#define PF_DLI AF_DLI
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#define PF_LAT AF_LAT
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#define PF_HYLINK AF_HYLINK
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#define PF_APPLETALK AF_APPLETALK
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#define PF_OROUTE AF_OROUTE
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#define PF_LINK AF_LINK
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#if defined(_NETBSD_SOURCE)
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#define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */
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#endif
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#define PF_COIP AF_COIP
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#define PF_CNT AF_CNT
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#define PF_INET6 AF_INET6
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#define PF_IPX AF_IPX /* same format as AF_NS */
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#if defined(_NETBSD_SOURCE)
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#define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */
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#define PF_PIP pseudo_AF_PIP
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#endif
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#define PF_ISDN AF_ISDN /* same as E164 */
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#define PF_E164 AF_E164
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#define PF_NATM AF_NATM
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#define PF_ARP AF_ARP
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#if defined(_NETBSD_SOURCE)
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#define PF_KEY pseudo_AF_KEY /* like PF_ROUTE, only for key mgmt */
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#endif
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#define PF_BLUETOOTH AF_BLUETOOTH
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#define PF_MPLS AF_MPLS
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#define PF_ROUTE AF_ROUTE
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#define PF_MAX AF_MAX
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/*
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* Message header for recvmsg and sendmsg calls.
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* Used value-result for recvmsg, value only for sendmsg.
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*/
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struct msghdr {
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void *msg_name; /* optional address */
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socklen_t msg_namelen; /* size of address */
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struct iovec *msg_iov; /* scatter/gather array */
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int msg_iovlen; /* # elements in msg_iov */
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void *msg_control; /* ancillary data, see below */
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socklen_t msg_controllen; /* ancillary data buffer len */
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int msg_flags; /* flags on received message */
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};
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#define MSG_OOB 0x0001 /* process out-of-band data */
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#define MSG_PEEK 0x0002 /* peek at incoming message */
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#define MSG_DONTROUTE 0x0004 /* send without using routing tables */
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#define MSG_EOR 0x0008 /* complete record */
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/*
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* Header for ancillary data objects in msg_control buffer.
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* Used for additional information with/about a datagram
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* not expressible by flags. The format is a sequence
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* of message elements headed by cmsghdr structures.
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*/
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struct cmsghdr {
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socklen_t cmsg_len; /* data byte count, including hdr */
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int cmsg_level; /* originating protocol */
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int cmsg_type; /* protocol-specific type */
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/* followed by u_char cmsg_data[]; */
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};
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#define CMSG_FIRSTHDR(mhdr) \
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( (mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \
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(struct cmsghdr *)(mhdr)->msg_control : \
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(struct cmsghdr *)NULL )
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#define CMSG_ALIGN(len) \
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( (len % sizeof(long) == 0) ? \
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len : \
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len + sizeof(long) - (len % sizeof(long)) )
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#define CMSG_NXTHDR(mhdr, cmsg) \
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( ((cmsg) == NULL) ? CMSG_FIRSTHDR(mhdr) : \
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(((unsigned char *)(cmsg) + CMSG_ALIGN((cmsg)->cmsg_len) \
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+ CMSG_ALIGN(sizeof(struct cmsghdr)) > \
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(unsigned char *)((mhdr)->msg_control) + \
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(mhdr)->msg_controllen) ? \
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(struct cmsghdr *)NULL : \
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(struct cmsghdr *)((unsigned char *)(cmsg) + \
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CMSG_ALIGN((cmsg)->cmsg_len))) )
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#define CMSG_DATA(cmsg) \
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( (unsigned char *)(cmsg) + CMSG_ALIGN(sizeof(struct cmsghdr)) )
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#define CMSG_SPACE(l) (CMSG_ALIGN(sizeof(struct cmsghdr)) + CMSG_ALIGN(l))
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#define CMSG_LEN(l) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (l))
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/* "Socket"-level control message types: */
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#define SCM_RIGHTS 0x01
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#define SCM_CREDENTIALS 0x02
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#define SCM_SECURITY 0x04
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/*
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* Types of socket shutdown(2).
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*/
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#define SHUT_RD 0 /* Disallow further receives. */
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#define SHUT_WR 1 /* Disallow further sends. */
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#define SHUT_RDWR 2 /* Disallow further sends/receives. */
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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int __cmsg_alignbytes(void);
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__END_DECLS
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__BEGIN_DECLS
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int accept(int, struct sockaddr * __restrict, socklen_t * __restrict);
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int bind(int, const struct sockaddr *, socklen_t);
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int connect(int, const struct sockaddr *, socklen_t);
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int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict);
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int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict);
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int getsockopt(int, int, int, void *__restrict, socklen_t * __restrict);
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int listen(int, int);
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ssize_t recv(int, void *, size_t, int);
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ssize_t recvfrom(int, void *__restrict, size_t, int,
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struct sockaddr * __restrict, socklen_t * __restrict);
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ssize_t recvmsg(int, struct msghdr *, int);
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ssize_t send(int, const void *, size_t, int);
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ssize_t sendto(int, const void *,
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size_t, int, const struct sockaddr *, socklen_t);
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ssize_t sendmsg(int, const struct msghdr *, int);
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int setsockopt(int, int, int, const void *, socklen_t);
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int shutdown(int, int);
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int sockatmark(int);
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int socket(int, int, int);
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int socketpair(int, int, int, int *);
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__END_DECLS
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#endif /* !_SYS_SOCKET_H_ */
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