--- a/epoc32/include/stdapis/sys/socket.h Tue Nov 24 13:55:44 2009 +0000
+++ b/epoc32/include/stdapis/sys/socket.h Tue Mar 16 16:12:26 2010 +0000
@@ -1,1 +1,667 @@
-socket.h
+// © Portions copyright (c) 2006 Nokia Corporation. All rights reserved.
+
+/*-
+ * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ * © Portions copyright (c) 2007 Symbian Software Ltd. 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.
+ * 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 1.88.2.1 2005/09/27 21:14:10 rwatson Exp $
+ */
+
+#ifndef _SYS_SOCKET_H_
+#define _SYS_SOCKET_H_
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+#include <sys/_types.h>
+#include <sys/_iovec.h>
+#define _NO_NAMESPACE_POLLUTION
+#include <machine/param.h>
+#undef _NO_NAMESPACE_POLLUTION
+
+/*
+ * Definitions related to sockets: types, address families, options.
+ */
+
+/*
+ * Data types.
+ */
+#if __BSD_VISIBLE
+#ifndef _GID_T_DECLARED
+typedef __gid_t gid_t;
+#define _GID_T_DECLARED
+#endif
+
+#ifndef _OFF_T_DECLARED
+typedef __off_t off_t;
+#define _OFF_T_DECLARED
+#endif
+
+#ifndef _PID_T_DECLARED
+typedef __pid_t pid_t;
+#define _PID_T_DECLARED
+#endif
+#endif
+
+#ifndef _SA_FAMILY_T_DECLARED
+typedef __sa_family_t sa_family_t;
+#define _SA_FAMILY_T_DECLARED
+#endif
+
+#ifndef _SOCKLEN_T_DECLARED
+typedef __socklen_t socklen_t;
+#define _SOCKLEN_T_DECLARED
+#endif
+
+#ifndef _SSIZE_T_DECLARED
+typedef __ssize_t ssize_t;
+#define _SSIZE_T_DECLARED
+#endif
+
+#if __BSD_VISIBLE
+#ifndef _UID_T_DECLARED
+typedef __uid_t uid_t;
+#define _UID_T_DECLARED
+#endif
+#endif
+
+/*
+ * Types
+ */
+#define SOCK_STREAM 1 /* stream socket */
+#define SOCK_DGRAM 2 /* datagram socket */
+#ifdef __SYMBIAN32__
+#define SOCK_RAW 4 /* raw-protocol interface */
+#else
+#define SOCK_RAW 3 /* raw-protocol interface */
+#endif // __SYMBIAN32__
+#if __BSD_VISIBLE
+#define SOCK_RDM 4 /* reliably-delivered message */
+#endif
+#ifdef __SYMBIAN32__
+#define SOCK_SEQPACKET 3 /* sequenced packet stream */
+#else
+#define SOCK_SEQPACKET 5 /* sequenced packet stream */
+#endif // __SYMBIAN32__
+
+/*
+ * Option flags per-socket.
+ */
+#define SO_DEBUG 0x0001 /* turn on debugging info recording KSODebug */
+#define SO_ACCEPTCONN 0x0002 /* socket has had listen() */
+#ifdef __SYMBIAN32__
+#define SO_REUSEADDR 0x406 /* allow local address reuse */
+#else
+#define SO_REUSEADDR 0x0004 /* allow local address reuse */
+#endif // __SYMBIAN32__
+#ifdef __SYMBIAN32__
+#define SO_KEEPALIVE 0x305 /* keep connections alive KSoTcpKeepAlive */
+#else
+#define SO_KEEPALIVE 0x0008 /* keep connections alive */
+#endif // __SYMBIAN32__
+#define SO_DONTROUTE 0x0010 /* just use interface addresses */
+#ifdef __SYMBIAN32__
+#define SO_BROADCAST -1 /* permit sending of broadcast msgs */
+#else
+#define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */
+#endif // __SYMBIAN32__
+#if __BSD_VISIBLE
+#ifdef __SYMBIAN32__
+#define SO_USELOOPBACK -2 /* bypass hardware when possible */
+#else
+#define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */
+#endif // __SYMBIAN32__
+#endif
+#ifdef __SYMBIAN32__
+#define SO_LINGER -3 /* linger on close if data present */
+#else
+#define SO_LINGER 0x0080 /* linger on close if data present */
+#endif // __SYMBIAN32__
+#ifdef __SYMBIAN32__
+#define SO_OOBINLINE 0x315 /* leave received OOB data in line KSoTcpOobInline */
+#else
+#define SO_OOBINLINE 0x0100 /* leave received OOB data in line */
+#endif // __SYMBIAN32__
+#if __BSD_VISIBLE
+#define SO_REUSEPORT 0x0200 /* allow local address & port reuse */
+#define SO_TIMESTAMP 0x0400 /* timestamp received dgram traffic */
+#define SO_NOSIGPIPE 0x0800 /* no SIGPIPE from EPIPE */
+#define SO_ACCEPTFILTER 0x1000 /* there is an accept filter */
+#define SO_BINTIME 0x2000 /* timestamp received dgram traffic */
+#endif
+
+/*
+ * Additional options, not kept in so_options.
+ */
+#ifdef __SYMBIAN32__
+#define SO_SNDBUF 3 /* send buffer size KSOSendBuf */
+#else
+#define SO_SNDBUF 0x1001 /* send buffer size */
+#endif // __SYMBIAN32__
+#ifdef __SYMBIAN32__
+#define SO_RCVBUF 2 /* receive buffer size KSORecvBuf */
+#else
+#define SO_RCVBUF 0x1002 /* receive buffer size */
+#endif // __SYMBIAN32__
+#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 */
+#ifdef __SYMBIAN32__
+#define SO_ERROR 9 /* get error status and clear */
+#else
+#define SO_ERROR 0x1007 /* get error status and clear */
+#endif // __SYMBIAN32__
+#define SO_TYPE 0x1008 /* get socket type */
+#if __BSD_VISIBLE
+#define SO_LABEL 0x1009 /* socket's MAC label */
+#define SO_PEERLABEL 0x1010 /* socket's peer's MAC label */
+#define SO_LISTENQLIMIT 0x1011 /* socket's backlog limit */
+#define SO_LISTENQLEN 0x1012 /* socket's complete queue length */
+#define SO_LISTENINCQLEN 0x1013 /* socket's incomplete queue length */
+#endif
+
+/*
+ * Structure used for manipulating linger option.
+ */
+struct linger {
+ int l_onoff; /* option on/off */
+ int l_linger; /* linger time */
+};
+
+#if __BSD_VISIBLE
+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.
+ */
+#ifdef __SYMBIAN32__
+#define SOL_SOCKET 1 /* options for socket level KSOLSocket */
+#else
+#define SOL_SOCKET 0xffff /* options for socket level */
+#endif // __SYMBIAN32__
+/*
+ * Address families.
+ */
+#define AF_UNSPEC 0 /* unspecified */
+#if __BSD_VISIBLE
+#ifdef __SYMBIAN32__
+#define AF_LOCAL 0x666 /* local to host (pipes, portals) */
+#else
+#define AF_LOCAL AF_UNIX /* local to host (pipes, portals) */
+#endif // __SYMBIAN32__
+#endif
+#define AF_UNIX 1 /* standardized name for AF_LOCAL */
+#ifdef __SYMBIAN32__
+#define AF_INET 0x0800 /* internetwork: UDP, TCP, etc. */
+#else
+#define AF_INET 2 /* internetwork: UDP, TCP, etc. */
+#endif // __SYMBIAN32__
+#if __BSD_VISIBLE
+#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_NETBIOS 6 /* SMB 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 */
+#define AF_ISDN 26 /* Integrated Services Digital Network*/
+#define AF_E164 AF_ISDN /* CCITT E.164 recommendation */
+#define pseudo_AF_KEY 27 /* Internal key-management function */
+#endif
+#ifdef __SYMBIAN32__
+#define AF_INET6 0x0806 /* IPv6 */
+#else
+#define AF_INET6 28 /* IPv6 */
+#endif
+#if __BSD_VISIBLE
+#define AF_NATM 29 /* native ATM access */
+#define AF_ATM 30 /* ATM */
+#define pseudo_AF_HDRCMPLT 31 /* Used by BPF to not rewrite headers
+ * in interface output routine
+ */
+#define AF_NETGRAPH 32 /* Netgraph sockets */
+#define AF_SLOW 33 /* 802.3ad slow protocol */
+#define AF_SCLUSTER 34 /* Sitara cluster protocol */
+#define AF_ARP 35
+#define AF_BLUETOOTH 36 /* Bluetooth sockets */
+#define AF_MAX 37
+#endif
+#ifdef __SYMBIAN32__
+#define AF_IRDA 0x0100 /* IrDA */
+#define AF_PLP 273 /* Symbian link protocol */
+#endif // __SYMBIAN32__
+
+#ifndef __SYMBIAN32__
+/*
+ * Structure used by kernel to store most
+ * addresses.
+ */
+struct sockaddr {
+ unsigned char sa_len; /* total length */
+ sa_family_t sa_family; /* address family */
+ char sa_data[14]; /* actually longer; address value */
+};
+#else
+/**
+Structure used by EPOC32 to store most addresses.
+NB. EPOC32 uses 32-bit family and port numbers internally, but they have been
+left as shorts here for compatibility with code that uses htons()/ntohs() explicitly.
+*/
+struct sockaddr {
+ u_short sa_family; /* address family */
+ u_short sa_port; /* port number - a common feature of most protocols */
+ char sa_data[24]; /* up to 24 bytes of direct address */
+ unsigned char sa_len;
+};
+#endif //__SYMBIAN32__
+
+#if __BSD_VISIBLE
+#define SOCK_MAXADDRLEN 255 /* longest possible addresses */
+
+/*
+ * Structure used by kernel to pass protocol
+ * information in raw sockets.
+ */
+struct sockproto {
+ unsigned short sp_family; /* address family */
+ unsigned short sp_protocol; /* protocol */
+};
+#endif
+
+/*
+ * RFC 2553: protocol-independent placeholder for socket addresses
+ */
+#define _SS_MAXSIZE 128U
+#define _SS_ALIGNSIZE (sizeof(__int64_t))
+#define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof(unsigned char) - \
+ sizeof(sa_family_t))
+#define _SS_PAD2SIZE (_SS_MAXSIZE - sizeof(unsigned char) - \
+ sizeof(sa_family_t) - _SS_PAD1SIZE - _SS_ALIGNSIZE)
+
+struct sockaddr_storage {
+ unsigned char ss_len; /* address length */
+ sa_family_t ss_family; /* address family */
+ char __ss_pad1[_SS_PAD1SIZE];
+ __int64_t __ss_align; /* force desired struct alignment */
+ char __ss_pad2[_SS_PAD2SIZE];
+};
+
+#if __BSD_VISIBLE
+/*
+ * 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_NETBIOS AF_NETBIOS
+#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
+#define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */
+#define PF_PIP pseudo_AF_PIP
+#define PF_ISDN AF_ISDN
+#define PF_KEY pseudo_AF_KEY
+#define PF_INET6 AF_INET6
+#define PF_NATM AF_NATM
+#define PF_ATM AF_ATM
+#define PF_NETGRAPH AF_NETGRAPH
+#define PF_SLOW AF_SLOW
+#define PF_SCLUSTER AF_SCLUSTER
+#define PF_ARP AF_ARP
+#define PF_BLUETOOTH AF_BLUETOOTH
+
+#define PF_MAX AF_MAX
+
+#ifdef __SYMBIAN32__
+#define PF_IRDA AF_IRDA
+#define PF_PLP AF_PLP
+#endif // __SYMBIAN32__
+/*
+ * 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 }, \
+ { "snp", CTLTYPE_NODE }, \
+ { "scp", 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_IFMALIST 4 /* return multicast address list */
+#define NET_RT_MAXID 5
+
+#define CTL_NET_RT_NAMES { \
+ { 0, 0 }, \
+ { "dump", CTLTYPE_STRUCT }, \
+ { "flags", CTLTYPE_STRUCT }, \
+ { "iflist", CTLTYPE_STRUCT }, \
+ { "ifmalist", CTLTYPE_STRUCT }, \
+}
+#endif /* __BSD_VISIBLE */
+
+/*
+ * Maximum queue length specifiable by listen.
+ */
+#ifdef __SYMBIAN32__
+#define SOMAXCONN 5
+#else
+#define SOMAXCONN 128
+#endif // __SYMBIAN32__
+
+/*
+ * 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 */
+#if __BSD_VISIBLE
+#define MSG_DONTWAIT 0x80 /* this message should be nonblocking */
+#define MSG_EOF 0x100 /* data completes connection */
+#define MSG_NBIO 0x4000 /* FIONBIO mode, used by fifofs */
+#define MSG_COMPAT 0x8000 /* used in sendit() */
+#endif
+#ifdef _KERNEL
+#define MSG_SOCALLBCK 0x10000 /* for use by socket callbacks - soreceive (TCP) */
+#endif
+#if __BSD_VISIBLE
+#define MSG_NOSIGNAL 0x20000 /* do not generate SIGPIPE on EOF */
+#endif
+
+/*
+ * 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[]; */
+};
+
+#if __BSD_VISIBLE
+/*
+ * 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 */
+};
+
+/*
+ * 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 /* __BSD_VISIBLE */
+
+/* given pointer to struct cmsghdr, return pointer to data */
+#define CMSG_DATA(cmsg) ((unsigned char *)(cmsg) + \
+ _ALIGN(sizeof(struct cmsghdr)))
+
+/* given pointer to struct cmsghdr, return pointer to next cmsghdr */
+#define CMSG_NXTHDR(mhdr, cmsg) \
+ (((char *)(cmsg) + _ALIGN((cmsg)->cmsg_len) + \
+ _ALIGN(sizeof(struct cmsghdr)) > \
+ (char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \
+ (struct cmsghdr *)0 : \
+ (struct cmsghdr *)((char *)(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)
+
+#if __BSD_VISIBLE
+/* RFC 2292 additions */
+#define CMSG_SPACE(l) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l))
+#define CMSG_LEN(l) (_ALIGN(sizeof(struct cmsghdr)) + (l))
+#endif
+
+#ifdef _KERNEL
+#define CMSG_ALIGN(n) _ALIGN(n)
+#endif
+
+/* "Socket"-level control message types: */
+#define SCM_RIGHTS 0x01 /* access rights (array of int) */
+#if __BSD_VISIBLE
+#define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */
+#define SCM_CREDS 0x03 /* process creds (struct cmsgcred) */
+#define SCM_BINTIME 0x04 /* timestamp (struct bintime) */
+#endif
+
+#if __BSD_VISIBLE
+/*
+ * 4.3 compat sockaddr, move to compat file later
+ */
+struct osockaddr {
+ unsigned 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 {
+ char *msg_name; /* optional address */
+ int msg_namelen; /* size of address */
+ struct iovec *msg_iov; /* scatter/gather array */
+ int msg_iovlen; /* # elements in msg_iov */
+ char *msg_accrights; /* access rights sent/received */
+ int msg_accrightslen;
+};
+#endif
+
+/*
+ * 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 __BSD_VISIBLE
+/*
+ * 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 */
+};
+
+/*
+ * Sendfile-specific flag(s)
+ */
+#define SF_NODISKIO 0x00000001
+#endif
+
+#ifndef _KERNEL
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+IMPORT_C int accept(int, struct sockaddr * __restrict, socklen_t * __restrict);
+IMPORT_C int bind(int, const struct sockaddr *, socklen_t);
+IMPORT_C int connect(int, const struct sockaddr *, socklen_t);
+IMPORT_C int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict);
+IMPORT_C int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict);
+IMPORT_C int getsockopt(int, int, int, void * __restrict, socklen_t * __restrict);
+IMPORT_C int listen(int, int);
+IMPORT_C ssize_t recv(int, void *, size_t, int);
+IMPORT_C ssize_t recvfrom(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict);
+IMPORT_C ssize_t recvmsg(int, struct msghdr *, int);
+IMPORT_C ssize_t send(int, const void *, size_t, int);
+IMPORT_C ssize_t sendto(int, const void *,
+ size_t, int, const struct sockaddr *, socklen_t);
+IMPORT_C ssize_t sendmsg(int, const struct msghdr *, int);
+IMPORT_C int setsockopt(int, int, int, const void *, socklen_t);
+IMPORT_C int shutdown(int, int);
+IMPORT_C int sockatmark(int);
+IMPORT_C int socket(int, int, int);
+__END_DECLS
+
+#endif /* !_KERNEL */
+
+#endif /* !_SYS_SOCKET_H_ */