544 lines
18 KiB
C
544 lines
18 KiB
C
/* $NetBSD: socket.h,v 1.65 2001/10/22 20:59:04 kleink 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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/*
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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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/*
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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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/*
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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_DONTROUTE 0x0010 /* just use interface addresses */
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#define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */
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#define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */
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#define SO_LINGER 0x0080 /* linger on close if data present */
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#define SO_OOBINLINE 0x0100 /* leave received OOB data in line */
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#define SO_REUSEPORT 0x0200 /* allow local address & port reuse */
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#define SO_TIMESTAMP 0x0400 /* timestamp received dgram traffic */
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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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#define SO_SNDTIMEO 0x1005 /* send timeout */
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#define SO_RCVTIMEO 0x1006 /* receive timeout */
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#define SO_ERROR 0x1007 /* get error status and clear */
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#define SO_TYPE 0x1008 /* get socket type */
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/*
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* Structure used for manipulating linger option.
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*/
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struct linger {
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int l_onoff; /* option on/off */
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int l_linger; /* linger time in seconds */
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};
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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 (pipes, portals) */
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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(_XOPEN_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(_XOPEN_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(_XOPEN_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(_XOPEN_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_MAX 31
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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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__uint8_t sa_len; /* total length */
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sa_family_t sa_family; /* address family */
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char sa_data[14]; /* actually longer; address value */
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};
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#if defined(_KERNEL)
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/*
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* Structure used by kernel to pass protocol
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* information in raw sockets.
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*/
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struct sockproto {
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u_short sp_family; /* address family */
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u_short sp_protocol; /* protocol */
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};
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#endif /* _KERNEL */
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#if 1
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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 - 2)
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#define _SS_PAD2SIZE (_SS_MAXSIZE - 2 - \
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_SS_PAD1SIZE - _SS_ALIGNSIZE)
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#if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 500
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struct sockaddr_storage {
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__uint8_t ss_len; /* address length */
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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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#endif /* !_XOPEN_SOURCE || ... */
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#endif /* 1 */
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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_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_ROUTE AF_ROUTE
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#define PF_LINK AF_LINK
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#if !defined(_XOPEN_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(_XOPEN_SOURCE)
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#define PF_RTIP pseudo_AF_FTIP /* 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(_XOPEN_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_MAX AF_MAX
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#if !defined(_XOPEN_SOURCE)
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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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/*
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* Socket credentials.
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*/
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struct sockcred {
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uid_t sc_uid; /* real user id */
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uid_t sc_euid; /* effective user id */
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gid_t sc_gid; /* real group id */
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gid_t sc_egid; /* effective group id */
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int sc_ngroups; /* number of supplemental groups */
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gid_t sc_groups[1]; /* variable length */
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};
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/*
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* Compute size of a sockcred structure with groups.
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*/
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#define SOCKCREDSIZE(ngrps) \
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(sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1)))
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#endif /* !_XOPEN_SOURCE */
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#if !defined(_XOPEN_SOURCE)
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/*
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* Definitions for network related sysctl, CTL_NET.
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*
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* Second level is protocol family.
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* Third level is protocol number.
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*
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* Further levels are defined by the individual families below.
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*/
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#define NET_MAXID AF_MAX
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#define CTL_NET_NAMES { \
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{ 0, 0 }, \
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{ "local", CTLTYPE_NODE }, \
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{ "inet", CTLTYPE_NODE }, \
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{ "implink", CTLTYPE_NODE }, \
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{ "pup", CTLTYPE_NODE }, \
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{ "chaos", CTLTYPE_NODE }, \
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{ "xerox_ns", CTLTYPE_NODE }, \
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{ "iso", CTLTYPE_NODE }, \
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{ "emca", CTLTYPE_NODE }, \
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{ "datakit", CTLTYPE_NODE }, \
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{ "ccitt", CTLTYPE_NODE }, \
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{ "ibm_sna", CTLTYPE_NODE }, \
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{ "decnet", CTLTYPE_NODE }, \
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{ "dec_dli", CTLTYPE_NODE }, \
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{ "lat", CTLTYPE_NODE }, \
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{ "hylink", CTLTYPE_NODE }, \
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{ "appletalk", CTLTYPE_NODE }, \
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{ "route", CTLTYPE_NODE }, \
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{ "link_layer", CTLTYPE_NODE }, \
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{ "xtp", CTLTYPE_NODE }, \
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{ "coip", CTLTYPE_NODE }, \
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{ "cnt", CTLTYPE_NODE }, \
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{ "rtip", CTLTYPE_NODE }, \
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{ "ipx", CTLTYPE_NODE }, \
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{ "inet6", CTLTYPE_NODE }, \
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{ "pip", CTLTYPE_NODE }, \
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{ "isdn", CTLTYPE_NODE }, \
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{ "natm", CTLTYPE_NODE }, \
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{ "arp", CTLTYPE_NODE }, \
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{ "key", CTLTYPE_NODE }, \
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}
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#endif /* !_XOPEN_SOURCE */
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#if !defined(_XOPEN_SOURCE)
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/*
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* PF_ROUTE - Routing table
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*
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* Three additional levels are defined:
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* Fourth: address family, 0 is wildcard
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* Fifth: type of info, defined below
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* Sixth: flag(s) to mask with for NET_RT_FLAGS
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*/
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#define NET_RT_DUMP 1 /* dump; may limit to a.f. */
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#define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */
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#define NET_RT_OIFLIST 3 /* old NET_RT_IFLIST (pre 1.5) */
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#define NET_RT_IFLIST 4 /* survey interface list */
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#define NET_RT_MAXID 5
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#define CTL_NET_RT_NAMES { \
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{ 0, 0 }, \
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{ "dump", CTLTYPE_STRUCT }, \
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{ "flags", CTLTYPE_STRUCT }, \
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{ 0, 0 }, \
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{ "iflist", CTLTYPE_STRUCT }, \
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}
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#endif /* !_XOPEN_SOURCE */
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/*
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* Maximum queue length specifiable by listen(2).
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*/
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#define SOMAXCONN 128
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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 0x1 /* process out-of-band data */
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#define MSG_PEEK 0x2 /* peek at incoming message */
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#define MSG_DONTROUTE 0x4 /* send without using routing tables */
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#define MSG_EOR 0x8 /* data completes record */
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#define MSG_TRUNC 0x10 /* data discarded before delivery */
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#define MSG_CTRUNC 0x20 /* control data lost before delivery */
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#define MSG_WAITALL 0x40 /* wait for full request or error */
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#define MSG_DONTWAIT 0x80 /* this message should be nonblocking */
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#define MSG_BCAST 0x100 /* this message was rcvd using link-level brdcst */
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#define MSG_MCAST 0x200 /* this message was rcvd using link-level mcast */
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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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/* given pointer to struct cmsghdr, return pointer to data */
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#define CMSG_DATA(cmsg) \
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((u_char *)(void *)(cmsg) + __CMSG_ALIGN(sizeof(struct cmsghdr)))
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/*
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* Alignment requirement for CMSG struct manipulation.
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* This basically behaves the same as ALIGN() ARCH/include/param.h.
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* We declare it separately for two reasons:
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* (1) avoid dependency between machine/param.h, and (2) to sync with kernel's
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* idea of ALIGNBYTES at runtime.
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* without (2), we can't guarantee binary compatibility in case of future
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* changes in ALIGNBYTES.
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*/
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#define __CMSG_ALIGN(n) (((n) + __cmsg_alignbytes()) & ~__cmsg_alignbytes())
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#ifdef _KERNEL
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#define CMSG_ALIGN(n) __CMSG_ALIGN(n)
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#endif
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/* given pointer to struct cmsghdr, return pointer to next cmsghdr */
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#define CMSG_NXTHDR(mhdr, cmsg) \
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(((__caddr_t)(cmsg) + __CMSG_ALIGN((cmsg)->cmsg_len) + \
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__CMSG_ALIGN(sizeof(struct cmsghdr)) > \
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(((__caddr_t)(mhdr)->msg_control) + (mhdr)->msg_controllen)) ? \
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(struct cmsghdr *)NULL : \
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(struct cmsghdr *)((__caddr_t)(cmsg) + \
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__CMSG_ALIGN((cmsg)->cmsg_len)))
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/*
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* RFC 2292 requires to check msg_controllen, in case that the kernel returns
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* an empty list for some reasons.
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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_SPACE(l) (__CMSG_ALIGN(sizeof(struct cmsghdr)) + __CMSG_ALIGN(l))
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#define CMSG_LEN(l) (__CMSG_ALIGN(sizeof(struct cmsghdr)) + (l))
|
|
|
|
/* "Socket"-level control message types: */
|
|
#define SCM_RIGHTS 0x01 /* access rights (array of int) */
|
|
#if !defined(_XOPEN_SOURCE)
|
|
#define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */
|
|
#define SCM_CREDS 0x04 /* credentials (struct sockcred) */
|
|
#endif
|
|
|
|
/*
|
|
* Types of socket shutdown(2).
|
|
*/
|
|
#define SHUT_RD 0 /* Disallow further receives. */
|
|
#define SHUT_WR 1 /* Disallow further sends. */
|
|
#define SHUT_RDWR 2 /* Disallow further sends/receives. */
|
|
|
|
#if !defined(_XOPEN_SOURCE)
|
|
/*
|
|
* 4.3 compat sockaddr, move to compat file later
|
|
*/
|
|
struct osockaddr {
|
|
__uint16_t sa_family; /* address family */
|
|
char sa_data[14]; /* up to 14 bytes of direct address */
|
|
};
|
|
|
|
/*
|
|
* 4.3-compat message header (move to compat file later).
|
|
*/
|
|
struct omsghdr {
|
|
__caddr_t msg_name; /* optional address */
|
|
int msg_namelen; /* size of address */
|
|
struct iovec *msg_iov; /* scatter/gather array */
|
|
int msg_iovlen; /* # elements in msg_iov */
|
|
__caddr_t msg_accrights; /* access rights sent/received */
|
|
int msg_accrightslen;
|
|
};
|
|
#endif
|
|
|
|
#include <sys/cdefs.h>
|
|
|
|
__BEGIN_DECLS
|
|
int __cmsg_alignbytes __P((void));
|
|
__END_DECLS
|
|
|
|
#ifndef _KERNEL
|
|
|
|
__BEGIN_DECLS
|
|
int accept __P((int, struct sockaddr * __restrict, socklen_t * __restrict));
|
|
int bind __P((int, const struct sockaddr *, socklen_t));
|
|
int connect __P((int, const struct sockaddr *, socklen_t));
|
|
int getpeername __P((int, struct sockaddr * __restrict,
|
|
socklen_t * __restrict));
|
|
int getsockname __P((int, struct sockaddr * __restrict,
|
|
socklen_t * __restrict));
|
|
int getsockopt __P((int, int, int, void * __restrict,
|
|
socklen_t * __restrict));
|
|
int listen __P((int, int));
|
|
ssize_t recv __P((int, void *, size_t, int));
|
|
ssize_t recvfrom __P((int, void * __restrict, size_t, int,
|
|
struct sockaddr * __restrict, socklen_t * __restrict));
|
|
ssize_t recvmsg __P((int, struct msghdr *, int));
|
|
ssize_t send __P((int, const void *, size_t, int));
|
|
ssize_t sendto __P((int, const void *,
|
|
size_t, int, const struct sockaddr *, socklen_t));
|
|
ssize_t sendmsg __P((int, const struct msghdr *, int));
|
|
int setsockopt __P((int, int, int, const void *, socklen_t));
|
|
int shutdown __P((int, int));
|
|
int sockatmark __P((int));
|
|
int socket __P((int, int, int));
|
|
int socketpair __P((int, int, int, int *));
|
|
__END_DECLS
|
|
#endif /* !_KERNEL */
|
|
|
|
#endif /* !_SYS_SOCKET_H_ */
|