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
 */

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

#include <sys/stdsyms.h>
#include <pthread/posix.h>
#include <sys/cdefs.h>

/*
 * Types of sockets
 */
#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 */

/*
 * 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_SND_COPYAVOID	0x1009		/* avoid copy on send*/
#define	SO_RCV_COPYAVOID	0x100a		/* avoid copy on rcv */

/*
 * 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_OTS		17		/* Used for OSI in the ifnets */
#define	AF_NIT		18		/* NIT */

#define	AF_MAX		19

/*
 * 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_MAX		AF_MAX

/*
 * Maximum queue length specifiable by listen.
 */
#define	SOMAXCONN	20

/*
 * 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

/* 
 * 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));

__END_DECLS