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327 lines
12 KiB
C
327 lines
12 KiB
C
/* Copyright (C) 1991, 92, 94, 95, 96 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#ifndef _SYS_SOCKET_H
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#define _SYS_SOCKET_H 1
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#include <features.h>
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__BEGIN_DECLS
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#define __need_size_t
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#include <stddef.h>
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/* Types of sockets. */
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enum __socket_type
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{
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SOCK_STREAM = 1, /* Sequenced, reliable, connection-based
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byte streams. */
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SOCK_DGRAM = 2, /* Connectionless, unreliable datagrams
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of fixed maximum length. */
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SOCK_RAW = 3, /* Raw protocol interface. */
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SOCK_RDM = 4, /* Reliably-delivered messages. */
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SOCK_SEQPACKET = 5, /* Sequenced, reliable, connection-based,
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datagrams of fixed maximum length. */
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};
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/* Protocol families. */
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#define PF_UNSPEC 0 /* Unspecified. */
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#define PF_LOCAL 1 /* Local to host (pipes and file-domain). */
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#define PF_UNIX PF_LOCAL /* Old BSD name for PF_LOCAL. */
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#define PF_INET 2 /* IP protocol family. */
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#define PF_IMPLINK 3 /* ARPAnet IMP protocol. */
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#define PF_PUP 4 /* PUP protocols. */
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#define PF_CHAOS 5 /* MIT Chaos protocols. */
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#define PF_NS 6 /* Xerox NS protocols. */
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#define PF_ISO 7 /* ISO protocols. */
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#define PF_OSI PF_ISO
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#define PF_ECMA 8 /* ECMA protocols. */
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#define PF_DATAKIT 9 /* AT&T Datakit protocols. */
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#define PF_CCITT 10 /* CCITT protocols (X.25 et al). */
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#define PF_SNA 11 /* IBM SNA protocol. */
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#define PF_DECnet 12 /* DECnet protocols. */
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#define PF_DLI 13 /* Direct data link interface. */
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#define PF_LAT 14 /* DEC Local Area Transport protocol. */
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#define PF_HYLINK 15 /* NSC Hyperchannel protocol. */
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#define PF_APPLETALK 16 /* Don't use this. */
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#define PF_ROUTE 17 /* Internal Routing Protocol. */
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#define PF_LINK 18 /* Link layer interface. */
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#define PF_XTP 19 /* eXpress Transfer Protocol (no AF). */
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#define PF_COIP 20 /* Connection-oriented IP, aka ST II. */
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#define PF_CNT 21 /* Computer Network Technology. */
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#define PF_RTIP 22 /* Help Identify RTIP packets. **/
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#define PF_IPX 23 /* Novell Internet Protocol. */
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#define PF_SIP 24 /* Simple Internet Protocol. */
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#define PF_PIP 25 /* Help Identify PIP packets. */
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#define PF_INET6 26 /* IP version 6. */
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#define PF_MAX 27
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/* Address families. */
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#define AF_UNSPEC PF_UNSPEC
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#define AF_LOCAL PF_LOCAL
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#define AF_UNIX PF_UNIX
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#define AF_INET PF_INET
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#define AF_IMPLINK PF_IMPLINK
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#define AF_PUP PF_PUP
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#define AF_CHAOS PF_CHAOS
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#define AF_NS PF_NS
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#define AF_ISO PF_ISO
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#define AF_OSI PF_OSI
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#define AF_ECMA PF_ECMA
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#define AF_DATAKIT PF_DATAKIT
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#define AF_CCITT PF_CCITT
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#define AF_SNA PF_SNA
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#define AF_DECnet PF_DECnet
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#define AF_DLI PF_DLI
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#define AF_LAT PF_LAT
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#define AF_HYLINK PF_HYLINK
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#define AF_APPLETALK PF_APPLETALK
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#define AF_ROUTE PF_ROUTE
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#define AF_LINK PF_LINK
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#define pseudo_AF_XTP PF_XTP
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#define AF_COIP PF_COIP
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#define AF_CNT PF_CNT
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#define pseudo_AF_RTIP PF_RTIP
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#define AF_IPX PF_IPX
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#define AF_SIP PF_SIP
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#define pseudo_AF_PIP PF_PIP
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#define AF_INET6 PF_INET6
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#define AF_MAX PF_MAX
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/* Get the definition of the macro to define the common sockaddr members. */
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#include <sockaddrcom.h>
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/* Structure describing a generic socket address. */
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struct sockaddr
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{
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__SOCKADDR_COMMON (sa_); /* Common data: address family and length. */
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char sa_data[14]; /* Address data. */
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};
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/* This is the type we use for generic socket address arguments.
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With GCC 2.7 and later, the funky union causes redeclarations or uses with
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any of the listed types to be allowed without complaint. */
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#if (!defined (__GNUC__) || __GNUC__ < 2 || \
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(__GNUC__ == 2 && __GNUC_MINOR__ < 7))
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#define __SOCKADDR_ARG struct sockaddr *
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#define __CONST_SOCKADDR_ARG __const struct sockaddr *
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#else
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/* Add more `struct sockaddr_AF' types here as necessary.
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These are all the ones I found on NetBSD and Linux. */
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#define __SOCKADDR_ALLTYPES \
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__SOCKADDR_ONETYPE (sockaddr) \
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__SOCKADDR_ONETYPE (sockaddr_at) \
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__SOCKADDR_ONETYPE (sockaddr_ax25) \
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__SOCKADDR_ONETYPE (sockaddr_dl) \
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__SOCKADDR_ONETYPE (sockaddr_eon) \
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__SOCKADDR_ONETYPE (sockaddr_in) \
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__SOCKADDR_ONETYPE (sockaddr_in6) \
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__SOCKADDR_ONETYPE (sockaddr_inarp) \
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__SOCKADDR_ONETYPE (sockaddr_ipx) \
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__SOCKADDR_ONETYPE (sockaddr_iso) \
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__SOCKADDR_ONETYPE (sockaddr_ns) \
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__SOCKADDR_ONETYPE (sockaddr_un) \
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__SOCKADDR_ONETYPE (sockaddr_x25)
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#define __SOCKADDR_ONETYPE(type) struct type *__##type##__;
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typedef union { __SOCKADDR_ALLTYPES
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} __SOCKADDR_ARG __attribute__ ((__transparent_union__));
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#undef __SOCKADDR_ONETYPE
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#define __SOCKADDR_ONETYPE(type) __const struct type *__##type##__;
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typedef union { __SOCKADDR_ALLTYPES
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} __CONST_SOCKADDR_ARG __attribute__ ((__transparent_union__));
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#undef __SOCKADDR_ONETYPE
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#endif
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/* Create a new socket of type TYPE in domain DOMAIN, using
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protocol PROTOCOL. If PROTOCOL is zero, one is chosen automatically.
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Returns a file descriptor for the new socket, or -1 for errors. */
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extern int socket __P ((int __domain, enum __socket_type __type,
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int __protocol));
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/* Create two new sockets, of type TYPE in domain DOMAIN and using
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protocol PROTOCOL, which are connected to each other, and put file
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descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero,
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one will be chosen automatically. Returns 0 on success, -1 for errors. */
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extern int socketpair __P ((int __domain, enum __socket_type __type,
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int __protocol, int __fds[2]));
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/* Give the socket FD the local address ADDR (which is LEN bytes long). */
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extern int bind __P ((int __fd, __CONST_SOCKADDR_ARG __addr, size_t __len));
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/* Put the local address of FD into *ADDR and its length in *LEN. */
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extern int getsockname __P ((int __fd, __SOCKADDR_ARG __addr,
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size_t *__len));
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/* Open a connection on socket FD to peer at ADDR (which LEN bytes long).
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For connectionless socket types, just set the default address to send to
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and the only address from which to accept transmissions.
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Return 0 on success, -1 for errors. */
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extern int connect __P ((int __fd,
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__CONST_SOCKADDR_ARG __addr, size_t __len));
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/* Put the address of the peer connected to socket FD into *ADDR
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(which is *LEN bytes long), and its actual length into *LEN. */
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extern int getpeername __P ((int __fd, __SOCKADDR_ARG __addr,
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size_t *__len));
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/* Bits in the FLAGS argument to `send', `recv', et al. */
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enum
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{
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MSG_OOB = 0x01, /* Process out-of-band data. */
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MSG_PEEK = 0x02, /* Peek at incoming messages. */
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MSG_DONTROUTE = 0x04, /* Don't use local routing. */
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MSG_EOR = 0x08, /* Data completes record. */
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MSG_TRUNC = 0x10, /* Data discarded before delivery. */
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MSG_CTRUNC = 0x20, /* Control data lost before delivery. */
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MSG_WAITALL = 0x40, /* Wait for full request or error. */
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MSG_DONTWAIT = 0x80, /* This message should be nonblocking. */
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};
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/* Send N bytes of BUF to socket FD. Returns the number sent or -1. */
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extern int send __P ((int __fd, __ptr_t __buf, size_t __n, int __flags));
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/* Read N bytes into BUF from socket FD.
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Returns the number read or -1 for errors. */
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extern int recv __P ((int __fd, __ptr_t __buf, size_t __n, int __flags));
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/* Send N bytes of BUF on socket FD to peer at address ADDR (which is
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ADDR_LEN bytes long). Returns the number sent, or -1 for errors. */
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extern int sendto __P ((int __fd, __ptr_t __buf, size_t __n, int __flags,
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__CONST_SOCKADDR_ARG __addr, size_t __addr_len));
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/* Read N bytes into BUF through socket FD.
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If ADDR is not NULL, fill in *ADDR_LEN bytes of it with tha address of
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the sender, and store the actual size of the address in *ADDR_LEN.
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Returns the number of bytes read or -1 for errors. */
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extern int recvfrom __P ((int __fd, __ptr_t __buf, size_t __n, int __flags,
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__SOCKADDR_ARG __addr, size_t *__addr_len));
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/* Structure describing messages sent by
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`sendmsg' and received by `recvmsg'. */
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struct msghdr
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{
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__ptr_t msg_name; /* Address to send to/receive from. */
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size_t msg_namelen; /* Length of address data. */
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struct iovec *msg_iov; /* Vector of data to send/receive into. */
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size_t msg_iovlen; /* Number of elements in the vector. */
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__ptr_t msg_accrights; /* Access rights information. */
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size_t msg_accrightslen; /* Length of access rights information. */
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};
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/* Send a message described MESSAGE on socket FD.
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Returns the number of bytes sent, or -1 for errors. */
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extern int sendmsg __P ((int __fd, __const struct msghdr *__message,
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int __flags));
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/* Receive a message as described by MESSAGE from socket FD.
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Returns the number of bytes read or -1 for errors. */
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extern int recvmsg __P ((int __fd, struct msghdr *__message, int __flags));
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/* Protocol number used to manipulate socket-level options
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with `getsockopt' and `setsockopt'. */
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#define SOL_SOCKET 0xffff
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/* Socket-level options for `getsockopt' and `setsockopt'. */
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enum
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{
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SO_DEBUG = 0x0001, /* Record debugging information. */
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SO_ACCEPTCONN = 0x0002, /* Accept connections on socket. */
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SO_REUSEADDR = 0x0004, /* Allow reuse of local addresses. */
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SO_KEEPALIVE = 0x0008, /* Keep connections alive and send
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SIGPIPE when they die. */
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SO_DONTROUTE = 0x0010, /* Don't do local routing. */
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SO_BROADCAST = 0x0020, /* Allow transmission of
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broadcast messages. */
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SO_USELOOPBACK = 0x0040, /* Use the software loopback to avoid
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hardware use when possible. */
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SO_LINGER = 0x0080, /* Block on close of a reliable
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socket to transmit pending data. */
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SO_OOBINLINE = 0x0100, /* Receive out-of-band data in-band. */
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SO_REUSEPORT = 0x0200, /* Allow local address and port reuse. */
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SO_SNDBUF = 0x1001, /* Send buffer size. */
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SO_RCVBUF = 0x1002, /* Receive buffer. */
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SO_SNDLOWAT = 0x1003, /* Send low-water mark. */
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SO_RCVLOWAT = 0x1004, /* Receive low-water mark. */
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SO_SNDTIMEO = 0x1005, /* Send timeout. */
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SO_RCVTIMEO = 0x1006, /* Receive timeout. */
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SO_ERROR = 0x1007, /* Get and clear error status. */
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SO_STYLE = 0x1008, /* Get socket connection style. */
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SO_TYPE = SO_STYLE, /* Compatible name for SO_STYLE. */
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};
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/* Structure used to manipulate the SO_LINGER option. */
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struct linger
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{
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int l_onoff; /* Nonzero to linger on close. */
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int l_linger; /* Time to linger. */
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};
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/* Put the current value for socket FD's option OPTNAME at protocol level LEVEL
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into OPTVAL (which is *OPTLEN bytes long), and set *OPTLEN to the value's
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actual length. Returns 0 on success, -1 for errors. */
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extern int getsockopt __P ((int __fd, int __level, int __optname,
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__ptr_t __optval, size_t *__optlen));
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/* Set socket FD's option OPTNAME at protocol level LEVEL
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to *OPTVAL (which is OPTLEN bytes long).
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Returns 0 on success, -1 for errors. */
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extern int setsockopt __P ((int __fd, int __level, int __optname,
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__ptr_t __optval, size_t __optlen));
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/* Prepare to accept connections on socket FD.
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N connection requests will be queued before further requests are refused.
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Returns 0 on success, -1 for errors. */
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extern int listen __P ((int __fd, unsigned int __n));
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/* Await a connection on socket FD.
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When a connection arrives, open a new socket to communicate with it,
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set *ADDR (which is *ADDR_LEN bytes long) to the address of the connecting
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peer and *ADDR_LEN to the address's actual length, and return the
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new socket's descriptor, or -1 for errors. */
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extern int accept __P ((int __fd, __SOCKADDR_ARG __addr,
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size_t *__addr_len));
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/* Shut down all or part of the connection open on socket FD.
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HOW determines what to shut down:
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0 = No more receptions;
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1 = No more transmissions;
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2 = No more receptions or transmissions.
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Returns 0 on success, -1 for errors. */
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extern int shutdown __P ((int __fd, int __how));
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__END_DECLS
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#endif /* sys/socket.h */
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