[apple/xnu.git] / bsd / sys / socket.h

/*
 * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*
 * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)socket.h	8.4 (Berkeley) 2/21/94
 * $FreeBSD: src/sys/sys/socket.h,v 1.39.2.7 2001/07/03 11:02:01 ume Exp $
 */

#ifndef _SYS_SOCKET_H_
#define	_SYS_SOCKET_H_

#ifndef __APPLE__
#include <machine/ansi.h>
#endif
#define _NO_NAMESPACE_POLLUTION
#include <machine/param.h>
#undef _NO_NAMESPACE_POLLUTION

/*
 * Definitions related to sockets: types, address families, options.
 */

/*
 * Data types.
 */
typedef u_char		sa_family_t;
#ifdef	_BSD_SOCKLEN_T_
typedef	_BSD_SOCKLEN_T_	socklen_t;
#undef	_BSD_SOCKLEN_T_
#endif
 
/*
 * Types
 */
#define	SOCK_STREAM	1		/* stream socket */
#define	SOCK_DGRAM	2		/* datagram socket */
#define	SOCK_RAW	3		/* raw-protocol interface */
#define	SOCK_RDM	4		/* reliably-delivered message */
#define	SOCK_SEQPACKET	5		/* sequenced packet stream */

/*
 * Option flags per-socket.
 */
#define	SO_DEBUG	0x0001		/* turn on debugging info recording */
#define	SO_ACCEPTCONN	0x0002		/* socket has had listen() */
#define	SO_REUSEADDR	0x0004		/* allow local address reuse */
#define	SO_KEEPALIVE	0x0008		/* keep connections alive */
#define	SO_DONTROUTE	0x0010		/* just use interface addresses */
#define	SO_BROADCAST	0x0020		/* permit sending of broadcast msgs */
#define	SO_USELOOPBACK	0x0040		/* bypass hardware when possible */
#define	SO_LINGER	0x0080		/* linger on close if data present */
#define	SO_OOBINLINE	0x0100		/* leave received OOB data in line */
#define	SO_REUSEPORT	0x0200		/* allow local address & port reuse */
#define	SO_TIMESTAMP	0x0400		/* timestamp received dgram traffic */
#ifndef __APPLE__
#define	SO_ACCEPTFILTER	0x1000		/* there is an accept filter */
#else
#define SO_DONTTRUNC	0x2000		/* APPLE: Retain unread data */
					/*  (ATOMIC proto) */
#define SO_WANTMORE		0x4000		/* APPLE: Give hint when more data ready */
#define SO_WANTOOBFLAG	0x8000		/* APPLE: Want OOB in MSG_FLAG on receive */
#endif

/*
 * Additional options, not kept in so_options.
 */
#define SO_SNDBUF	0x1001		/* send buffer size */
#define SO_RCVBUF	0x1002		/* receive buffer size */
#define SO_SNDLOWAT	0x1003		/* send low-water mark */
#define SO_RCVLOWAT	0x1004		/* receive low-water mark */
#define SO_SNDTIMEO	0x1005		/* send timeout */
#define SO_RCVTIMEO	0x1006		/* receive timeout */
#define	SO_ERROR	0x1007		/* get error status and clear */
#define	SO_TYPE		0x1008		/* get socket type */
/*efine	SO_PRIVSTATE	0x1009		   get/deny privileged state */
#ifdef __APPLE__
#define SO_NREAD	0x1020		/* APPLE: get 1st-packet byte count */
#define SO_NKE		0x1021		/* APPLE: Install socket-level NKE */
#define SO_NOSIGPIPE	0x1022		/* APPLE: No SIGPIPE on EPIPE */
#endif
/*
 * Structure used for manipulating linger option.
 */
struct	linger {
	int	l_onoff;		/* option on/off */
	int	l_linger;		/* linger time */
};

#ifndef __APPLE__
struct	accept_filter_arg {
	char	af_name[16];
	char	af_arg[256-16];
};
#endif

/*
 * Level number for (get/set)sockopt() to apply to socket itself.
 */
#define	SOL_SOCKET	0xffff		/* options for socket level */

/*
 * Address families.
 */
#define	AF_UNSPEC	0		/* unspecified */
#define	AF_LOCAL	1		/* local to host (pipes) */
#define	AF_UNIX		AF_LOCAL	/* backward compatibility */
#define	AF_INET		2		/* internetwork: UDP, TCP, etc. */
#define	AF_IMPLINK	3		/* arpanet imp addresses */
#define	AF_PUP		4		/* pup protocols: e.g. BSP */
#define	AF_CHAOS	5		/* mit CHAOS protocols */
#define	AF_NS		6		/* XEROX NS protocols */
#define	AF_ISO		7		/* ISO protocols */
#define	AF_OSI		AF_ISO
#define	AF_ECMA		8		/* European computer manufacturers */
#define	AF_DATAKIT	9		/* datakit protocols */
#define	AF_CCITT	10		/* CCITT protocols, X.25 etc */
#define	AF_SNA		11		/* IBM SNA */
#define AF_DECnet	12		/* DECnet */
#define AF_DLI		13		/* DEC Direct data link interface */
#define AF_LAT		14		/* LAT */
#define	AF_HYLINK	15		/* NSC Hyperchannel */
#define	AF_APPLETALK	16		/* Apple Talk */
#define	AF_ROUTE	17		/* Internal Routing Protocol */
#define	AF_LINK		18		/* Link layer interface */
#define	pseudo_AF_XTP	19		/* eXpress Transfer Protocol (no AF) */
#define	AF_COIP		20		/* connection-oriented IP, aka ST II */
#define	AF_CNT		21		/* Computer Network Technology */
#define pseudo_AF_RTIP	22		/* Help Identify RTIP packets */
#define	AF_IPX		23		/* Novell Internet Protocol */
#define	AF_SIP		24		/* Simple Internet Protocol */
#define pseudo_AF_PIP	25		/* Help Identify PIP packets */
#ifdef __APPLE__
/*define pseudo_AF_BLUE	26	   Identify packets for Blue Box - Not used */
#define AF_NDRV		27		/* Network Driver 'raw' access */
#endif
#define	AF_ISDN		28		/* Integrated Services Digital Network*/
#define	AF_E164		AF_ISDN		/* CCITT E.164 recommendation */
#define	pseudo_AF_KEY	29		/* Internal key-management function */
#define	AF_INET6	30		/* IPv6 */
#define	AF_NATM		31		/* native ATM access */
#ifdef __APPLE__
#define AF_SYSTEM	32		/* Kernel event messages */
#define AF_NETBIOS	33		/* NetBIOS */
#define AF_PPP		34		/* PPP communication protocol */
#else
#define	AF_ATM		30		/* ATM */
#endif
#define pseudo_AF_HDRCMPLT 35		/* Used by BPF to not rewrite headers
					 * in interface output routine
					 */
#ifndef __APPLE__
#define	AF_NETGRAPH	32		/* Netgraph sockets */
#endif
#define	AF_MAX		36

/*
 * Structure used by kernel to store most
 * addresses.
 */
struct sockaddr {
	u_char	sa_len;			/* total length */
	u_char	sa_family;		/* address family */
	char		sa_data[14];		/* actually longer; address value */
};
#define	SOCK_MAXADDRLEN	255		/* longest possible addresses */

/*
 * Structure used by kernel to pass protocol
 * information in raw sockets.
 */
struct sockproto {
	u_short	sp_family;		/* address family */
	u_short	sp_protocol;		/* protocol */
};

/*
 * RFC 2553: protocol-independent placeholder for socket addresses
 */
#define	_SS_MAXSIZE	128
#define	_SS_ALIGNSIZE	(sizeof(int64_t))
#define	_SS_PAD1SIZE	(_SS_ALIGNSIZE - sizeof(u_char) - sizeof(sa_family_t))
#define	_SS_PAD2SIZE	(_SS_MAXSIZE - sizeof(u_char) - sizeof(sa_family_t) - \
				_SS_PAD1SIZE - _SS_ALIGNSIZE)

struct sockaddr_storage {
	u_char		ss_len;		/* address length */
	sa_family_t	ss_family;	/* address family */
	char			__ss_pad1[_SS_PAD1SIZE];
	int64_t		__ss_align;	/* force desired structure storage alignment */
	char			__ss_pad2[_SS_PAD2SIZE];
};

/*
 * Protocol families, same as address families for now.
 */
#define	PF_UNSPEC	AF_UNSPEC
#define	PF_LOCAL	AF_LOCAL
#define	PF_UNIX		PF_LOCAL	/* backward compatibility */
#define	PF_INET		AF_INET
#define	PF_IMPLINK	AF_IMPLINK
#define	PF_PUP		AF_PUP
#define	PF_CHAOS	AF_CHAOS
#define	PF_NS		AF_NS
#define	PF_ISO		AF_ISO
#define	PF_OSI		AF_ISO
#define	PF_ECMA		AF_ECMA
#define	PF_DATAKIT	AF_DATAKIT
#define	PF_CCITT	AF_CCITT
#define	PF_SNA		AF_SNA
#define PF_DECnet	AF_DECnet
#define PF_DLI		AF_DLI
#define PF_LAT		AF_LAT
#define	PF_HYLINK	AF_HYLINK
#define	PF_APPLETALK	AF_APPLETALK
#define	PF_ROUTE	AF_ROUTE
#define	PF_LINK		AF_LINK
#define	PF_XTP		pseudo_AF_XTP	/* really just proto family, no AF */
#define	PF_COIP		AF_COIP
#define	PF_CNT		AF_CNT
#define	PF_SIP		AF_SIP
#define	PF_IPX		AF_IPX		/* same format as AF_NS */
#define PF_RTIP		pseudo_AF_RTIP	/* same format as AF_INET */
#define PF_PIP		pseudo_AF_PIP
#ifdef __APPLE__
#define PF_NDRV		AF_NDRV
#endif
#define	PF_ISDN		AF_ISDN
#define	PF_KEY		pseudo_AF_KEY
#define	PF_INET6	AF_INET6
#define	PF_NATM		AF_NATM
#ifdef __APPLE__
#define PF_SYSTEM	AF_SYSTEM
#define PF_NETBIOS	AF_NETBIOS
#define PF_PPP		AF_PPP
#else
#define	PF_ATM		AF_ATM
#define	PF_NETGRAPH	AF_NETGRAPH
#endif

#define	PF_MAX		AF_MAX

/*
 * Definitions for network related sysctl, CTL_NET.
 *
 * Second level is protocol family.
 * Third level is protocol number.
 *
 * Further levels are defined by the individual families below.
 */
#define NET_MAXID	AF_MAX

#define CTL_NET_NAMES { \
	{ 0, 0 }, \
	{ "local", CTLTYPE_NODE }, \
	{ "inet", CTLTYPE_NODE }, \
	{ "implink", CTLTYPE_NODE }, \
	{ "pup", CTLTYPE_NODE }, \
	{ "chaos", CTLTYPE_NODE }, \
	{ "xerox_ns", CTLTYPE_NODE }, \
	{ "iso", CTLTYPE_NODE }, \
	{ "emca", CTLTYPE_NODE }, \
	{ "datakit", CTLTYPE_NODE }, \
	{ "ccitt", CTLTYPE_NODE }, \
	{ "ibm_sna", CTLTYPE_NODE }, \
	{ "decnet", CTLTYPE_NODE }, \
	{ "dec_dli", CTLTYPE_NODE }, \
	{ "lat", CTLTYPE_NODE }, \
	{ "hylink", CTLTYPE_NODE }, \
	{ "appletalk", CTLTYPE_NODE }, \
	{ "route", CTLTYPE_NODE }, \
	{ "link_layer", CTLTYPE_NODE }, \
	{ "xtp", CTLTYPE_NODE }, \
	{ "coip", CTLTYPE_NODE }, \
	{ "cnt", CTLTYPE_NODE }, \
	{ "rtip", CTLTYPE_NODE }, \
	{ "ipx", CTLTYPE_NODE }, \
	{ "sip", CTLTYPE_NODE }, \
	{ "pip", CTLTYPE_NODE }, \
	{ 0, 0 }, \
	{ "ndrv", CTLTYPE_NODE }, \
	{ "isdn", CTLTYPE_NODE }, \
	{ "key", CTLTYPE_NODE }, \
	{ "inet6", CTLTYPE_NODE }, \
	{ "natm", CTLTYPE_NODE }, \
	{ "sys", CTLTYPE_NODE }, \
	{ "netbios", CTLTYPE_NODE }, \
	{ "ppp", CTLTYPE_NODE }, \
	{ "hdrcomplete", CTLTYPE_NODE }, \
}

/*
 * PF_ROUTE - Routing table
 *
 * Three additional levels are defined:
 *	Fourth: address family, 0 is wildcard
 *	Fifth: type of info, defined below
 *	Sixth: flag(s) to mask with for NET_RT_FLAGS
 */
#define NET_RT_DUMP	1		/* dump; may limit to a.f. */
#define NET_RT_FLAGS	2		/* by flags, e.g. RESOLVING */
#define NET_RT_IFLIST	3		/* survey interface list */
#define	NET_RT_MAXID	4

#define CTL_NET_RT_NAMES { \
	{ 0, 0 }, \
	{ "dump", CTLTYPE_STRUCT }, \
	{ "flags", CTLTYPE_STRUCT }, \
	{ "iflist", CTLTYPE_STRUCT }, \
}

/*
 * Maximum queue length specifiable by listen.
 */
#define	SOMAXCONN	128

/*
 * Message header for recvmsg and sendmsg calls.
 * Used value-result for recvmsg, value only for sendmsg.
 */
struct msghdr {
	caddr_t	msg_name;		/* optional address */
	u_int	msg_namelen;		/* size of address */
	struct	iovec *msg_iov;		/* scatter/gather array */
	u_int	msg_iovlen;		/* # elements in msg_iov */
	caddr_t	msg_control;		/* ancillary data, see below */
	u_int	msg_controllen;		/* ancillary data buffer len */
	int	msg_flags;		/* flags on received message */
};

#define	MSG_OOB		0x1		/* process out-of-band data */
#define	MSG_PEEK	0x2		/* peek at incoming message */
#define	MSG_DONTROUTE	0x4		/* send without using routing tables */
#define	MSG_EOR		0x8		/* data completes record */
#define	MSG_TRUNC	0x10		/* data discarded before delivery */
#define	MSG_CTRUNC	0x20		/* control data lost before delivery */
#define	MSG_WAITALL	0x40		/* wait for full request or error */
#define	MSG_DONTWAIT	0x80		/* this message should be nonblocking */
#define	MSG_EOF		0x100		/* data completes connection */
#ifdef __APPLE__
#define MSG_FLUSH	0x400		/* Start of 'hold' seq; dump so_temp */
#define MSG_HOLD	0x800		/* Hold frag in so_temp */
#define MSG_SEND	0x1000		/* Send the packet in so_temp */
#define MSG_HAVEMORE	0x2000		/* Data ready to be read */
#define MSG_RCVMORE	0x4000		/* Data remains in current pkt */
#endif
#define MSG_COMPAT      0x8000		/* used in sendit() */

/*
 * Header for ancillary data objects in msg_control buffer.
 * Used for additional information with/about a datagram
 * not expressible by flags.  The format is a sequence
 * of message elements headed by cmsghdr structures.
 */
struct cmsghdr {
	u_int	cmsg_len;		/* data byte count, including hdr */
	int	cmsg_level;		/* originating protocol */
	int	cmsg_type;		/* protocol-specific type */
/* followed by	u_char  cmsg_data[]; */
};

#ifndef __APPLE__
/*
 * While we may have more groups than this, the cmsgcred struct must
 * be able to fit in an mbuf, and NGROUPS_MAX is too large to allow
 * this.
*/
#define CMGROUP_MAX 16

/*
 * Credentials structure, used to verify the identity of a peer
 * process that has sent us a message. This is allocated by the
 * peer process but filled in by the kernel. This prevents the
 * peer from lying about its identity. (Note that cmcred_groups[0]
 * is the effective GID.)
 */
struct cmsgcred {
	pid_t	cmcred_pid;		/* PID of sending process */
	uid_t	cmcred_uid;		/* real UID of sending process */
	uid_t	cmcred_euid;		/* effective UID of sending process */
	gid_t	cmcred_gid;		/* real GID of sending process */
	short	cmcred_ngroups;		/* number or groups */
	gid_t	cmcred_groups[CMGROUP_MAX];	/* groups */
};
#endif

/* given pointer to struct cmsghdr, return pointer to data */
#define	CMSG_DATA(cmsg)		((u_char *)(cmsg) + \
				 ALIGN(sizeof(struct cmsghdr)))

/* given pointer to struct cmsghdr, return pointer to next cmsghdr */
#define	CMSG_NXTHDR(mhdr, cmsg)	\
	(((caddr_t)(cmsg) + ALIGN((cmsg)->cmsg_len) + \
	  ALIGN(sizeof(struct cmsghdr)) > \
	    (caddr_t)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \
	    (struct cmsghdr *)NULL : \
	    (struct cmsghdr *)((caddr_t)(cmsg) + ALIGN((cmsg)->cmsg_len)))

#define	CMSG_FIRSTHDR(mhdr)	((struct cmsghdr *)(mhdr)->msg_control)

/* RFC 2292 additions */
	
#define	CMSG_SPACE(l)		(ALIGN(sizeof(struct cmsghdr)) + ALIGN(l))
#define	CMSG_LEN(l)		(ALIGN(sizeof(struct cmsghdr)) + (l))

#ifdef KERNEL
#define	CMSG_ALIGN(n)	ALIGN(n)
#endif

/* "Socket"-level control message types: */
#define	SCM_RIGHTS	0x01		/* access rights (array of int) */
#define	SCM_TIMESTAMP	0x02		/* timestamp (struct timeval) */
#define	SCM_CREDS	0x03		/* process creds (struct cmsgcred) */

/*
 * 4.3 compat sockaddr, move to compat file later
 */
struct osockaddr {
	u_short	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;
};

/*
 * howto arguments for shutdown(2), specified by Posix.1g.
 */
#define	SHUT_RD		0		/* shut down the reading side */
#define	SHUT_WR		1		/* shut down the writing side */
#define	SHUT_RDWR	2		/* shut down both sides */

#if SENDFILE
/*
 * sendfile(2) header/trailer struct
 */
struct sf_hdtr {
	struct iovec *headers;	/* pointer to an array of header struct iovec's */
	int hdr_cnt;		/* number of header iovec's */
	struct iovec *trailers;	/* pointer to an array of trailer struct iovec's */
	int trl_cnt;		/* number of trailer iovec's */
};
#endif

#ifndef	KERNEL

#include <sys/cdefs.h>

__BEGIN_DECLS
int	accept __P((int, struct sockaddr *, int *));
int	bind __P((int, const struct sockaddr *, int));
int	connect __P((int, const struct sockaddr *, int));
int	getpeername __P((int, struct sockaddr *, int *));
int	getsockname __P((int, struct sockaddr *, int *));
int	getsockopt __P((int, int, int, void *, int *));
int	listen __P((int, int));
ssize_t	recv __P((int, void *, size_t, int));
ssize_t	recvfrom __P((int, void *, size_t, int, struct sockaddr *, int *));
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 *, int));
ssize_t	sendmsg __P((int, const struct msghdr *, int));
#if SENDFILE
int	sendfile __P((int, int, off_t, size_t, struct sf_hdtr *, off_t *, int));
#endif
int	setsockopt __P((int, int, int, const void *, int));
int	shutdown __P((int, int));
int	socket __P((int, int, int));
int	socketpair __P((int, int, int, int *));

void	pfctlinput __P((int, struct sockaddr *));
__END_DECLS

#endif /* !KERNEL */

#endif /* !_SYS_SOCKET_H_ */
Commit	Line	Data
1c79356b	1	/*
9bccf70c	2	* Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
1c79356b A	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
d7e50217	6	* Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
1c79356b	7	*
d7e50217 A	8	* This file contains Original Code and/or Modifications of Original Code
	9	* as defined in and that are subject to the Apple Public Source License
	10	* Version 2.0 (the 'License'). You may not use this file except in
	11	* compliance with the License. Please obtain a copy of the License at
	12	* http://www.opensource.apple.com/apsl/ and read it before using this
	13	* file.
	14	*
	15	* The Original Code and all software distributed under the License are
	16	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	17	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	18	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
d7e50217 A	19	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	20	* Please see the License for the specific language governing rights and
	21	* limitations under the License.
1c79356b A	22	*
	23	* @APPLE_LICENSE_HEADER_END@
	24	*/
	25	/* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
	26	/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
	27	/*
	28	* Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
	29	* The Regents of the University of California. All rights reserved.
	30	*
	31	* Redistribution and use in source and binary forms, with or without
	32	* modification, are permitted provided that the following conditions
	33	* are met:
	34	* 1. Redistributions of source code must retain the above copyright
	35	* notice, this list of conditions and the following disclaimer.
	36	* 2. Redistributions in binary form must reproduce the above copyright
	37	* notice, this list of conditions and the following disclaimer in the
	38	* documentation and/or other materials provided with the distribution.
	39	* 3. All advertising materials mentioning features or use of this software
	40	* must display the following acknowledgement:
	41	* This product includes software developed by the University of
	42	* California, Berkeley and its contributors.
	43	* 4. Neither the name of the University nor the names of its contributors
	44	* may be used to endorse or promote products derived from this software
	45	* without specific prior written permission.
	46	*
	47	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	48	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	49	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	50	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	51	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	52	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	53	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	54	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	55	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	56	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	57	* SUCH DAMAGE.
	58	*
	59	* @(#)socket.h 8.4 (Berkeley) 2/21/94
9bccf70c	60	* $FreeBSD: src/sys/sys/socket.h,v 1.39.2.7 2001/07/03 11:02:01 ume Exp $
1c79356b A	61	*/
	62
	63	#ifndef _SYS_SOCKET_H_
	64	#define _SYS_SOCKET_H_
	65
9bccf70c A	66	#ifndef __APPLE__
	67	#include <machine/ansi.h>
	68	#endif
	69	#define _NO_NAMESPACE_POLLUTION
	70	#include <machine/param.h>
	71	#undef _NO_NAMESPACE_POLLUTION
1c79356b A	72
	73	/*
	74	* Definitions related to sockets: types, address families, options.
	75	*/
	76
9bccf70c A	77	/*
	78	* Data types.
	79	*/
	80	typedef u_char sa_family_t;
	81	#ifdef _BSD_SOCKLEN_T_
	82	typedef _BSD_SOCKLEN_T_ socklen_t;
	83	#undef _BSD_SOCKLEN_T_
	84	#endif
	85
1c79356b A	86	/*
	87	* Types
	88	*/
	89	#define SOCK_STREAM 1 /* stream socket */
	90	#define SOCK_DGRAM 2 /* datagram socket */
	91	#define SOCK_RAW 3 /* raw-protocol interface */
	92	#define SOCK_RDM 4 /* reliably-delivered message */
	93	#define SOCK_SEQPACKET 5 /* sequenced packet stream */
	94
	95	/*
	96	* Option flags per-socket.
	97	*/
	98	#define SO_DEBUG 0x0001 /* turn on debugging info recording */
	99	#define SO_ACCEPTCONN 0x0002 /* socket has had listen() */
	100	#define SO_REUSEADDR 0x0004 /* allow local address reuse */
	101	#define SO_KEEPALIVE 0x0008 /* keep connections alive */
	102	#define SO_DONTROUTE 0x0010 /* just use interface addresses */
	103	#define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */
	104	#define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */
	105	#define SO_LINGER 0x0080 /* linger on close if data present */
	106	#define SO_OOBINLINE 0x0100 /* leave received OOB data in line */
	107	#define SO_REUSEPORT 0x0200 /* allow local address & port reuse */
	108	#define SO_TIMESTAMP 0x0400 /* timestamp received dgram traffic */
9bccf70c A	109	#ifndef __APPLE__
	110	#define SO_ACCEPTFILTER 0x1000 /* there is an accept filter */
	111	#else
1c79356b A	112	#define SO_DONTTRUNC 0x2000 /* APPLE: Retain unread data */
1c79356b A	113	/* (ATOMIC proto) */
9bccf70c A	114	#define SO_WANTMORE 0x4000 /* APPLE: Give hint when more data ready */
	115	#define SO_WANTOOBFLAG 0x8000 /* APPLE: Want OOB in MSG_FLAG on receive */
	116	#endif
1c79356b A	117
	118	/*
	119	* Additional options, not kept in so_options.
	120	*/
	121	#define SO_SNDBUF 0x1001 /* send buffer size */
	122	#define SO_RCVBUF 0x1002 /* receive buffer size */
	123	#define SO_SNDLOWAT 0x1003 /* send low-water mark */
	124	#define SO_RCVLOWAT 0x1004 /* receive low-water mark */
	125	#define SO_SNDTIMEO 0x1005 /* send timeout */
	126	#define SO_RCVTIMEO 0x1006 /* receive timeout */
	127	#define SO_ERROR 0x1007 /* get error status and clear */
	128	#define SO_TYPE 0x1008 /* get socket type */
9bccf70c A	129	/efine SO_PRIVSTATE 0x1009 get/deny privileged state /
9bccf70c A	130	#ifdef __APPLE__
1c79356b A	131	#define SO_NREAD 0x1020 /* APPLE: get 1st-packet byte count */
1c79356b A	132	#define SO_NKE 0x1021 /* APPLE: Install socket-level NKE */
9bccf70c A	133	#define SO_NOSIGPIPE 0x1022 /* APPLE: No SIGPIPE on EPIPE */
9bccf70c A	134	#endif
1c79356b A	135	/*
	136	* Structure used for manipulating linger option.
	137	*/
	138	struct linger {
	139	int l_onoff; /* option on/off */
	140	int l_linger; /* linger time */
	141	};
	142
9bccf70c A	143	#ifndef __APPLE__
	144	struct accept_filter_arg {
	145	char af_name[16];
	146	char af_arg[256-16];
	147	};
	148	#endif
	149
1c79356b A	150	/*
	151	* Level number for (get/set)sockopt() to apply to socket itself.
	152	*/
	153	#define SOL_SOCKET 0xffff /* options for socket level */
	154
	155	/*
	156	* Address families.
	157	*/
	158	#define AF_UNSPEC 0 /* unspecified */
9bccf70c	159	#define AF_LOCAL 1 /* local to host (pipes) */
1c79356b A	160	#define AF_UNIX AF_LOCAL /* backward compatibility */
	161	#define AF_INET 2 /* internetwork: UDP, TCP, etc. */
	162	#define AF_IMPLINK 3 /* arpanet imp addresses */
	163	#define AF_PUP 4 /* pup protocols: e.g. BSP */
	164	#define AF_CHAOS 5 /* mit CHAOS protocols */
	165	#define AF_NS 6 /* XEROX NS protocols */
	166	#define AF_ISO 7 /* ISO protocols */
	167	#define AF_OSI AF_ISO
9bccf70c	168	#define AF_ECMA 8 /* European computer manufacturers */
1c79356b A	169	#define AF_DATAKIT 9 /* datakit protocols */
	170	#define AF_CCITT 10 /* CCITT protocols, X.25 etc */
	171	#define AF_SNA 11 /* IBM SNA */
	172	#define AF_DECnet 12 /* DECnet */
	173	#define AF_DLI 13 /* DEC Direct data link interface */
	174	#define AF_LAT 14 /* LAT */
	175	#define AF_HYLINK 15 /* NSC Hyperchannel */
	176	#define AF_APPLETALK 16 /* Apple Talk */
	177	#define AF_ROUTE 17 /* Internal Routing Protocol */
	178	#define AF_LINK 18 /* Link layer interface */
	179	#define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */
	180	#define AF_COIP 20 /* connection-oriented IP, aka ST II */
	181	#define AF_CNT 21 /* Computer Network Technology */
	182	#define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */
	183	#define AF_IPX 23 /* Novell Internet Protocol */
	184	#define AF_SIP 24 /* Simple Internet Protocol */
	185	#define pseudo_AF_PIP 25 /* Help Identify PIP packets */
9bccf70c A	186	#ifdef __APPLE__
9bccf70c A	187	/define pseudo_AF_BLUE 26 Identify packets for Blue Box - Not used /
1c79356b	188	#define AF_NDRV 27 /* Network Driver 'raw' access */
9bccf70c	189	#endif
1c79356b A	190	#define AF_ISDN 28 /* Integrated Services Digital Network*/
	191	#define AF_E164 AF_ISDN /* CCITT E.164 recommendation */
	192	#define pseudo_AF_KEY 29 /* Internal key-management function */
	193	#define AF_INET6 30 /* IPv6 */
	194	#define AF_NATM 31 /* native ATM access */
9bccf70c A	195	#ifdef __APPLE__
9bccf70c A	196	#define AF_SYSTEM 32 /* Kernel event messages */
1c79356b	197	#define AF_NETBIOS 33 /* NetBIOS */
0b4e3aa0	198	#define AF_PPP 34 /* PPP communication protocol */
9bccf70c A	199	#else
	200	#define AF_ATM 30 /* ATM */
	201	#endif
	202	#define pseudo_AF_HDRCMPLT 35 /* Used by BPF to not rewrite headers
	203	* in interface output routine
	204	*/
	205	#ifndef __APPLE__
	206	#define AF_NETGRAPH 32 /* Netgraph sockets */
	207	#endif
	208	#define AF_MAX 36
1c79356b A	209
	210	/*
	211	* Structure used by kernel to store most
	212	* addresses.
	213	*/
	214	struct sockaddr {
	215	u_char sa_len; /* total length */
	216	u_char sa_family; /* address family */
9bccf70c	217	char sa_data[14]; /* actually longer; address value */
1c79356b A	218	};
	219	#define SOCK_MAXADDRLEN 255 /* longest possible addresses */
	220
	221	/*
	222	* Structure used by kernel to pass protocol
	223	* information in raw sockets.
	224	*/
	225	struct sockproto {
	226	u_short sp_family; /* address family */
	227	u_short sp_protocol; /* protocol */
	228	};
	229
1c79356b	230	/*
9bccf70c	231	* RFC 2553: protocol-independent placeholder for socket addresses
1c79356b	232	*/
9bccf70c A	233	#define _SS_MAXSIZE 128
	234	#define _SS_ALIGNSIZE (sizeof(int64_t))
	235	#define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof(u_char) - sizeof(sa_family_t))
	236	#define _SS_PAD2SIZE (_SS_MAXSIZE - sizeof(u_char) - sizeof(sa_family_t) - \
1c79356b A	237	_SS_PAD1SIZE - _SS_ALIGNSIZE)
	238
	239	struct sockaddr_storage {
9bccf70c A	240	u_char ss_len; /* address length */
	241	sa_family_t ss_family; /* address family */
	242	char __ss_pad1[_SS_PAD1SIZE];
	243	int64_t __ss_align; /* force desired structure storage alignment */
	244	char __ss_pad2[_SS_PAD2SIZE];
1c79356b	245	};
1c79356b A	246
	247	/*
	248	* Protocol families, same as address families for now.
	249	*/
	250	#define PF_UNSPEC AF_UNSPEC
	251	#define PF_LOCAL AF_LOCAL
	252	#define PF_UNIX PF_LOCAL /* backward compatibility */
	253	#define PF_INET AF_INET
1c79356b A	254	#define PF_IMPLINK AF_IMPLINK
	255	#define PF_PUP AF_PUP
	256	#define PF_CHAOS AF_CHAOS
	257	#define PF_NS AF_NS
	258	#define PF_ISO AF_ISO
	259	#define PF_OSI AF_ISO
	260	#define PF_ECMA AF_ECMA
	261	#define PF_DATAKIT AF_DATAKIT
	262	#define PF_CCITT AF_CCITT
	263	#define PF_SNA AF_SNA
	264	#define PF_DECnet AF_DECnet
	265	#define PF_DLI AF_DLI
	266	#define PF_LAT AF_LAT
	267	#define PF_HYLINK AF_HYLINK
	268	#define PF_APPLETALK AF_APPLETALK
	269	#define PF_ROUTE AF_ROUTE
	270	#define PF_LINK AF_LINK
	271	#define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */
	272	#define PF_COIP AF_COIP
	273	#define PF_CNT AF_CNT
	274	#define PF_SIP AF_SIP
	275	#define PF_IPX AF_IPX /* same format as AF_NS */
	276	#define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */
	277	#define PF_PIP pseudo_AF_PIP
9bccf70c	278	#ifdef __APPLE__
1c79356b	279	#define PF_NDRV AF_NDRV
9bccf70c	280	#endif
1c79356b A	281	#define PF_ISDN AF_ISDN
	282	#define PF_KEY pseudo_AF_KEY
	283	#define PF_INET6 AF_INET6
	284	#define PF_NATM AF_NATM
9bccf70c	285	#ifdef __APPLE__
1c79356b A	286	#define PF_SYSTEM AF_SYSTEM
1c79356b A	287	#define PF_NETBIOS AF_NETBIOS
0b4e3aa0	288	#define PF_PPP AF_PPP
9bccf70c A	289	#else
	290	#define PF_ATM AF_ATM
	291	#define PF_NETGRAPH AF_NETGRAPH
	292	#endif
1c79356b A	293
	294	#define PF_MAX AF_MAX
	295
	296	/*
	297	* Definitions for network related sysctl, CTL_NET.
	298	*
	299	* Second level is protocol family.
	300	* Third level is protocol number.
	301	*
	302	* Further levels are defined by the individual families below.
	303	*/
	304	#define NET_MAXID AF_MAX
	305
	306	#define CTL_NET_NAMES { \
	307	{ 0, 0 }, \
	308	{ "local", CTLTYPE_NODE }, \
	309	{ "inet", CTLTYPE_NODE }, \
	310	{ "implink", CTLTYPE_NODE }, \
	311	{ "pup", CTLTYPE_NODE }, \
	312	{ "chaos", CTLTYPE_NODE }, \
	313	{ "xerox_ns", CTLTYPE_NODE }, \
	314	{ "iso", CTLTYPE_NODE }, \
	315	{ "emca", CTLTYPE_NODE }, \
	316	{ "datakit", CTLTYPE_NODE }, \
	317	{ "ccitt", CTLTYPE_NODE }, \
	318	{ "ibm_sna", CTLTYPE_NODE }, \
	319	{ "decnet", CTLTYPE_NODE }, \
	320	{ "dec_dli", CTLTYPE_NODE }, \
	321	{ "lat", CTLTYPE_NODE }, \
	322	{ "hylink", CTLTYPE_NODE }, \
	323	{ "appletalk", CTLTYPE_NODE }, \
	324	{ "route", CTLTYPE_NODE }, \
	325	{ "link_layer", CTLTYPE_NODE }, \
	326	{ "xtp", CTLTYPE_NODE }, \
	327	{ "coip", CTLTYPE_NODE }, \
	328	{ "cnt", CTLTYPE_NODE }, \
	329	{ "rtip", CTLTYPE_NODE }, \
	330	{ "ipx", CTLTYPE_NODE }, \
	331	{ "sip", CTLTYPE_NODE }, \
	332	{ "pip", CTLTYPE_NODE }, \
9bccf70c A	333	{ 0, 0 }, \
9bccf70c A	334	{ "ndrv", CTLTYPE_NODE }, \
1c79356b A	335	{ "isdn", CTLTYPE_NODE }, \
	336	{ "key", CTLTYPE_NODE }, \
	337	{ "inet6", CTLTYPE_NODE }, \
	338	{ "natm", CTLTYPE_NODE }, \
9bccf70c A	339	{ "sys", CTLTYPE_NODE }, \
	340	{ "netbios", CTLTYPE_NODE }, \
	341	{ "ppp", CTLTYPE_NODE }, \
	342	{ "hdrcomplete", CTLTYPE_NODE }, \
1c79356b A	343	}
	344
	345	/*
	346	* PF_ROUTE - Routing table
	347	*
	348	* Three additional levels are defined:
	349	* Fourth: address family, 0 is wildcard
	350	* Fifth: type of info, defined below
	351	* Sixth: flag(s) to mask with for NET_RT_FLAGS
	352	*/
	353	#define NET_RT_DUMP 1 /* dump; may limit to a.f. */
	354	#define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */
	355	#define NET_RT_IFLIST 3 /* survey interface list */
	356	#define NET_RT_MAXID 4
	357
	358	#define CTL_NET_RT_NAMES { \
	359	{ 0, 0 }, \
	360	{ "dump", CTLTYPE_STRUCT }, \
	361	{ "flags", CTLTYPE_STRUCT }, \
	362	{ "iflist", CTLTYPE_STRUCT }, \
	363	}
	364
	365	/*
	366	* Maximum queue length specifiable by listen.
	367	*/
	368	#define SOMAXCONN 128
	369
	370	/*
	371	* Message header for recvmsg and sendmsg calls.
	372	* Used value-result for recvmsg, value only for sendmsg.
	373	*/
	374	struct msghdr {
	375	caddr_t msg_name; /* optional address */
	376	u_int msg_namelen; /* size of address */
	377	struct iovec msg_iov; / scatter/gather array */
	378	u_int msg_iovlen; /* # elements in msg_iov */
	379	caddr_t msg_control; /* ancillary data, see below */
	380	u_int msg_controllen; /* ancillary data buffer len */
	381	int msg_flags; /* flags on received message */
	382	};
	383
	384	#define MSG_OOB 0x1 /* process out-of-band data */
	385	#define MSG_PEEK 0x2 /* peek at incoming message */
	386	#define MSG_DONTROUTE 0x4 /* send without using routing tables */
	387	#define MSG_EOR 0x8 /* data completes record */
	388	#define MSG_TRUNC 0x10 /* data discarded before delivery */
	389	#define MSG_CTRUNC 0x20 /* control data lost before delivery */
	390	#define MSG_WAITALL 0x40 /* wait for full request or error */
	391	#define MSG_DONTWAIT 0x80 /* this message should be nonblocking */
	392	#define MSG_EOF 0x100 /* data completes connection */
9bccf70c	393	#ifdef __APPLE__
1c79356b A	394	#define MSG_FLUSH 0x400 /* Start of 'hold' seq; dump so_temp */
	395	#define MSG_HOLD 0x800 /* Hold frag in so_temp */
	396	#define MSG_SEND 0x1000 /* Send the packet in so_temp */
	397	#define MSG_HAVEMORE 0x2000 /* Data ready to be read */
	398	#define MSG_RCVMORE 0x4000 /* Data remains in current pkt */
9bccf70c	399	#endif
1c79356b A	400	#define MSG_COMPAT 0x8000 /* used in sendit() */
	401
	402	/*
	403	* Header for ancillary data objects in msg_control buffer.
	404	* Used for additional information with/about a datagram
	405	* not expressible by flags. The format is a sequence
	406	* of message elements headed by cmsghdr structures.
	407	*/
	408	struct cmsghdr {
	409	u_int cmsg_len; /* data byte count, including hdr */
	410	int cmsg_level; /* originating protocol */
	411	int cmsg_type; /* protocol-specific type */
	412	/* followed by u_char cmsg_data[]; */
	413	};
	414
9bccf70c A	415	#ifndef __APPLE__
	416	/*
	417	* While we may have more groups than this, the cmsgcred struct must
	418	* be able to fit in an mbuf, and NGROUPS_MAX is too large to allow
	419	* this.
	420	*/
	421	#define CMGROUP_MAX 16
1c79356b	422
9bccf70c A	423	/*
	424	* Credentials structure, used to verify the identity of a peer
	425	* process that has sent us a message. This is allocated by the
	426	* peer process but filled in by the kernel. This prevents the
	427	* peer from lying about its identity. (Note that cmcred_groups[0]
	428	* is the effective GID.)
1c79356b	429	*/
9bccf70c A	430	struct cmsgcred {
	431	pid_t cmcred_pid; /* PID of sending process */
	432	uid_t cmcred_uid; /* real UID of sending process */
	433	uid_t cmcred_euid; /* effective UID of sending process */
	434	gid_t cmcred_gid; /* real GID of sending process */
	435	short cmcred_ngroups; /* number or groups */
	436	gid_t cmcred_groups[CMGROUP_MAX]; /* groups */
	437	};
	438	#endif
	439
	440	/* given pointer to struct cmsghdr, return pointer to data */
	441	#define CMSG_DATA(cmsg) ((u_char *)(cmsg) + \
	442	ALIGN(sizeof(struct cmsghdr)))
1c79356b A	443
	444	/* given pointer to struct cmsghdr, return pointer to next cmsghdr */
	445	#define CMSG_NXTHDR(mhdr, cmsg) \
9bccf70c A	446	(((caddr_t)(cmsg) + ALIGN((cmsg)->cmsg_len) + \
	447	ALIGN(sizeof(struct cmsghdr)) > \
	448	(caddr_t)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \
1c79356b	449	(struct cmsghdr *)NULL : \
9bccf70c	450	(struct cmsghdr *)((caddr_t)(cmsg) + ALIGN((cmsg)->cmsg_len)))
1c79356b A	451
	452	#define CMSG_FIRSTHDR(mhdr) ((struct cmsghdr *)(mhdr)->msg_control)
	453
9bccf70c A	454	/* RFC 2292 additions */
	455
	456	#define CMSG_SPACE(l) (ALIGN(sizeof(struct cmsghdr)) + ALIGN(l))
	457	#define CMSG_LEN(l) (ALIGN(sizeof(struct cmsghdr)) + (l))
	458
	459	#ifdef KERNEL
	460	#define CMSG_ALIGN(n) ALIGN(n)
	461	#endif
1c79356b A	462
	463	/* "Socket"-level control message types: */
	464	#define SCM_RIGHTS 0x01 /* access rights (array of int) */
	465	#define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */
	466	#define SCM_CREDS 0x03 /* process creds (struct cmsgcred) */
	467
	468	/*
	469	* 4.3 compat sockaddr, move to compat file later
	470	*/
	471	struct osockaddr {
	472	u_short sa_family; /* address family */
	473	char sa_data[14]; /* up to 14 bytes of direct address */
	474	};
	475
	476	/*
	477	* 4.3-compat message header (move to compat file later).
	478	*/
	479	struct omsghdr {
	480	caddr_t msg_name; /* optional address */
	481	int msg_namelen; /* size of address */
	482	struct iovec msg_iov; / scatter/gather array */
	483	int msg_iovlen; /* # elements in msg_iov */
	484	caddr_t msg_accrights; /* access rights sent/received */
	485	int msg_accrightslen;
	486	};
	487
	488	/*
	489	* howto arguments for shutdown(2), specified by Posix.1g.
	490	*/
	491	#define SHUT_RD 0 /* shut down the reading side */
	492	#define SHUT_WR 1 /* shut down the writing side */
	493	#define SHUT_RDWR 2 /* shut down both sides */
	494
	495	#if SENDFILE
	496	/*
	497	* sendfile(2) header/trailer struct
	498	*/
	499	struct sf_hdtr {
	500	struct iovec headers; / pointer to an array of header struct iovec's */
	501	int hdr_cnt; /* number of header iovec's */
	502	struct iovec trailers; / pointer to an array of trailer struct iovec's */
	503	int trl_cnt; /* number of trailer iovec's */
	504	};
	505	#endif
	506
	507	#ifndef KERNEL
	508
	509	#include <sys/cdefs.h>
	510
	511	__BEGIN_DECLS
	512	int accept __P((int, struct sockaddr , int ));
	513	int bind __P((int, const struct sockaddr *, int));
	514	int connect __P((int, const struct sockaddr *, int));
	515	int getpeername __P((int, struct sockaddr , int ));
	516	int getsockname __P((int, struct sockaddr , int ));
	517	int getsockopt __P((int, int, int, void , int ));
	518	int listen __P((int, int));
	519	ssize_t recv __P((int, void *, size_t, int));
	520	ssize_t recvfrom __P((int, void , size_t, int, struct sockaddr , int *));
	521	ssize_t recvmsg __P((int, struct msghdr *, int));
	522	ssize_t send __P((int, const void *, size_t, int));
	523	ssize_t sendto __P((int, const void *,
	524	size_t, int, const struct sockaddr *, int));
	525	ssize_t sendmsg __P((int, const struct msghdr *, int));
526	#if SENDFILE
527	int sendfile __P((int, int, off_t, size_t, struct sf_hdtr , off_t , int));
528	#endif
529	int setsockopt __P((int, int, int, const void *, int));
530	int shutdown __P((int, int));
531	int socket __P((int, int, int));
532	int socketpair __P((int, int, int, int *));
9bccf70c A	533
9bccf70c A	534	void pfctlinput __P((int, struct sockaddr *));
1c79356b A	535	__END_DECLS
	536
	537	#endif /* !KERNEL */
9bccf70c	538
1c79356b	539	#endif /* !_SYS_SOCKET_H_ */