socket.h

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#define	PF_CNT		AF_CNT
#define	PF_INET6	AF_INET6
#define	PF_IPX		AF_IPX		/* same format as AF_NS */
#if !defined(_XOPEN_SOURCE)
#define PF_RTIP		pseudo_AF_FTIP	/* same format as AF_INET */
#define PF_PIP		pseudo_AF_PIP
#endif
#define PF_ISDN		AF_ISDN		/* same as E164 */
#define PF_E164		AF_E164
#define PF_NATM		AF_NATM
#define PF_ARP		AF_ARP
#if !defined(_XOPEN_SOURCE)
#define PF_KEY 		pseudo_AF_KEY	/* like PF_ROUTE, only for key mgmt */
#endif

#define	PF_MAX		AF_MAX

#if !defined(_XOPEN_SOURCE)
/*
 * Socket credentials.
 */
struct sockcred {
	uid_t	sc_uid;			/* real user id */
	uid_t	sc_euid;		/* effective user id */
	gid_t	sc_gid;			/* real group id */
	gid_t	sc_egid;		/* effective group id */
	int	sc_ngroups;		/* number of supplemental groups */
	gid_t	sc_groups[1];		/* variable length */
};

/*
 * Compute size of a sockcred structure with groups.
 */
#define	SOCKCREDSIZE(ngrps) \
	(sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1)))
#endif /* !_XOPEN_SOURCE */


#if !defined(_XOPEN_SOURCE)
/*
 * 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 }, \
	{ "inet6", CTLTYPE_NODE }, \
	{ "pip", CTLTYPE_NODE }, \
	{ "isdn", CTLTYPE_NODE }, \
	{ "natm", CTLTYPE_NODE }, \
	{ "arp", CTLTYPE_NODE }, \
	{ "key", CTLTYPE_NODE }, \
}
#endif /* !_XOPEN_SOURCE */

#if !defined(_XOPEN_SOURCE)
/*
 * 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_OIFLIST	3		/* old NET_RT_IFLIST (pre 1.5) */
#define NET_RT_IFLIST	4		/* survey interface list */
#define	NET_RT_MAXID	5

#define CTL_NET_RT_NAMES { \
	{ 0, 0 }, \
	{ "dump", CTLTYPE_STRUCT }, \
	{ "flags", CTLTYPE_STRUCT }, \
	{ 0, 0 }, \
	{ "iflist", CTLTYPE_STRUCT }, \
}
#endif /* !_XOPEN_SOURCE */

/*
 * Maximum queue length specifiable by listen(2).
 */

#define	SOMAXCONN	128

/*
 * Message header for recvmsg and sendmsg calls.
 * Used value-result for recvmsg, value only for sendmsg.
 */
struct msghdr {
	void		*msg_name;	/* optional address */
	socklen_t	msg_namelen;	/* size of address */
	struct iovec	*msg_iov;	/* scatter/gather array */
	int		msg_iovlen;	/* # elements in msg_iov */
	void		*msg_control;	/* ancillary data, see below */
	socklen_t	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_BCAST	0x100		/* this message was rcvd using link-level brdcst */
#define	MSG_MCAST	0x200		/* this message was rcvd using link-level mcast */

/*
 * 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 {
	socklen_t	cmsg_len;	/* data byte count, including hdr */
	int		cmsg_level;	/* originating protocol */
	int		cmsg_type;	/* protocol-specific type */
/* followed by	u_char  cmsg_data[]; */
};

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

/*
 * Alignment requirement for CMSG struct manipulation.
 * This basically behaves the same as ALIGN() ARCH/include/param.h.
 * We declare it separately for two reasons:
 * (1) avoid dependency between machine/param.h, and (2) to sync with kernel's
 * idea of ALIGNBYTES at runtime.
 * without (2), we can't guarantee binary compatibility in case of future
 * changes in ALIGNBYTES.
 */
#define __CMSG_ALIGN(n)	(((n) + __cmsg_alignbytes()) & ~__cmsg_alignbytes())
#ifdef _KERNEL
#define CMSG_ALIGN(n)	__CMSG_ALIGN(n)
#endif

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

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

#define CMSG_SPACE(l)	(__CMSG_ALIGN(sizeof(struct cmsghdr)) + __CMSG_ALIGN(l))
#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 {
	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;
};
#endif

#include <sys/cdefs.h>

__BEGIN_DECLS
int	__cmsg_alignbytes __P((void));
__END_DECLS

#ifndef	_KERNEL

__BEGIN_DECLS
int	accept __P((int, struct sockaddr *, socklen_t *));
int	bind __P((int, const struct sockaddr *, socklen_t));
int	connect __P((int, const struct sockaddr *, socklen_t));
int	getpeername __P((int, struct sockaddr *, socklen_t *));
int	getsockname __P((int, struct sockaddr *, socklen_t *));
int	getsockopt __P((int, int, int, void *, socklen_t *));
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 *,
	    socklen_t *));
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	socket __P((int, int, int));
int	socketpair __P((int, int, int, int *));
__END_DECLS
#else
#ifdef COMPAT_OLDSOCK
#define MSG_COMPAT	0x8000
#endif
#endif /* !_KERNEL */

#endif /* !_SYS_SOCKET_H_ */