socket.h

eCos操作系统源码

#define	PF_ATM		AF_ATM
#define	PF_NETGRAPH	AF_NETGRAPH

#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 }, \
	{ "unix", 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 }, \
	{ "isdn", CTLTYPE_NODE }, \
	{ "key", CTLTYPE_NODE }, \
	{ "inet6", CTLTYPE_NODE }, \
	{ "natm", CTLTYPE_NODE }, \
	{ "atm", CTLTYPE_NODE }, \
	{ "hdrcomplete", CTLTYPE_NODE }, \
	{ "netgraph", 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 {
	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_EOF		0x100		/* data completes connection */
#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 {
	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[]; */
};

/*
 * 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 */
};

/* 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)))

/*
 * RFC 2292 requires to check msg_controllen, in case that the kernel returns
 * an empty list for some reasons.
 */
#define	CMSG_FIRSTHDR(mhdr) \
	((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \
	 (struct cmsghdr *)(mhdr)->msg_control : \
	 (struct cmsghdr *)NULL)

/* 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 */

/*
 * 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 */
};

#ifndef	_KERNEL

#include <sys/param.h>

__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	sendfile __P((int, int, off_t, size_t, struct sf_hdtr *, off_t *, 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 *));

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

#endif /* !_KERNEL */

#endif /* !_SYS_SOCKET_H_ */