socket.h

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/*
 * Copyright (c) 1982, 1985, 1986 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *	@(#)socket.h	7.3 (Berkeley) 6/27/88
 */

#ifndef _SYS_SOCKET_H
#define _SYS_SOCKET_H

/*
 * Types of sockets
 */
#define	SOCK_STREAM			2			/* stream socket */
#define	SOCK_DGRAM			1			/* datagram socket */
#define	SOCK_RAW			4			/* raw-protocol interface */
#define	SOCK_RDM			5			/* reliably-delivered message */
#define	SOCK_SEQPACKET		6			/* 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 */

/*
 * 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 */
#define SO_PROTOTYPE    0x1009      /* get/set protocol type */

/*
 * 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_UNIX			1		/* local to host (pipes, portals) */
#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_NBS			7		/* nbs protocols */
#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		/* Direct data link interface */
#define AF_LAT			14		/* LAT */
#define	AF_HYLINK		15		/* NSC Hyperchannel */
#define	AF_APPLETALK	16		/* Apple Talk */
#define	AF_NIT			17		/* NIT */
#define AF_802          18          /* IEEE 802.2, also ISO 8802 */
#define AF_ISO          19          /* ISO protocols */
#define AF_OSI          AF_ISO
#define AF_X25          20          /* CCITT X.25 in particular */
#define AF_OSINET       21
#define AF_GOSIP        22
#define AF_MAX          22

/*
 * Structure used by kernel to store most
 * addresses.
 */
struct sockaddr {
	unsigned short sa_family;	/* address family */
	char           sa_data[14];	/* up to 14 bytes of direct address */
};

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

/*
 * Protocol families, same as address families for now.
 */
#define	PF_UNSPEC		AF_UNSPEC
#define	PF_UNIX			AF_UNIX
#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_NBS			AF_NBS
#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_NIT          AF_NIT
#define PF_802          AF_802
#define PF_ISO          AF_ISO
#define PF_OSI          AF_ISO
#define PF_X25          AF_X25
#define PF_OSINET       AF_OSINET
#define PF_GOSIP        AF_GOSIP
#define PF_MAX          AF_MAX

/*
 * Maximum queue length specifiable by listen.
 */
#define	SOMAXCONN		5

/*
 * Message header for recvmsg and sendmsg calls.
 */
struct msghdr {
	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;
};

#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_MAXIOVLEN	16

#include <sys/cdefs.h>
/* 
 * Functions
 */

__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			listen			__P_((int, int));
int			socket			__P_((int, int, int));
int			setsockopt		__P_((int, int, int, const void *, int));
int			getsockname		__P_((int, struct sockaddr *, int *));
int			shutdown		__P_((int, int));
int      		getpeername __P_((int, struct sockaddr *, int *));
__END_DECLS

#endif  /* _SYS_SOCKET_H */