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/*

 * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994

 *      The Regents of the University of California.  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.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *      This product includes software developed by the University of

 *      California, Berkeley and its contributors.

 * 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 1.60 2002/04/20 02:24:35 mike Exp $

 */

#ifndef _SYS_SOCKET_H_

#define _SYS_SOCKET_H_

#include <sys/types.h>

#include <sys/_types.h>

#include <netinet/in.h>

#include <netdb.h>

/* Needed by linuxthreads. */

# define __SOCKADDR_ARG         struct sockaddr *__restrict

# define __CONST_SOCKADDR_ARG   __const struct sockaddr *

/*

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

 */

/*

 * Data types.

 */

#ifdef _BSD_SA_FAMILY_T_

typedef _BSD_SA_FAMILY_T_       sa_family_t;

#undef _BSD_SA_FAMILY_T_

#endif

#ifdef  _BSD_SOCKLEN_T_

typedef _BSD_SOCKLEN_T_ socklen_t;

#undef  _BSD_SOCKLEN_T_

#endif

/*

 * Types

 */

#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 */

#define SO_REUSEPORT    0x0200          /* allow local address & port reuse */

#define SO_TIMESTAMP    0x0400          /* timestamp received dgram traffic */

#define SO_ACCEPTFILTER 0x1000          /* there is an accept filter */

/*

 * 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 */

/*efine SO_PRIVSTATE    0x1009             get/deny privileged state */

/*

 * Structure used for manipulating linger option.

 */

struct linger {

        int     l_onoff;                /* option on/off */

        int     l_linger;               /* linger time */

};

struct accept_filter_arg {

        char    af_name[16];

        char    af_arg[256-16];

};

/*

 * Level number for (get/set)sockopt() to apply to socket itself.

 */

#define SOL_SOCKET      0xffff          /* options for socket level */

/* Protocol families.  */

#define PF_UNSPEC       0        /* Unspecified.  */

#define PF_LOCAL        1       /* Local to host (pipes and file-domain).  */

#define PF_UNIX         PF_LOCAL /* Old BSD name for PF_LOCAL.  */

#define PF_FILE         PF_LOCAL /* Another non-standard name for PF_LOCAL.  */

#define PF_INET         2       /* IP protocol family.  */

#define PF_AX25         3       /* Amateur Radio AX.25.  */

#define PF_IPX          4       /* Novell Internet Protocol.  */

#define PF_APPLETALK    5       /* Appletalk DDP.  */

#define PF_NETROM       6       /* Amateur radio NetROM.  */

#define PF_BRIDGE       7       /* Multiprotocol bridge.  */

#define PF_ATMPVC       8       /* ATM PVCs.  */

#define PF_X25          9       /* Reserved for X.25 project.  */

#define PF_INET6        10      /* IP version 6.  */

#define PF_ROSE         11      /* Amateur Radio X.25 PLP.  */

#define PF_DECnet       12      /* Reserved for DECnet project.  */

#define PF_NETBEUI      13      /* Reserved for 802.2LLC project.  */

#define PF_SECURITY     14      /* Security callback pseudo AF.  */

#define PF_KEY          15      /* PF_KEY key management API.  */

#define PF_NETLINK      16

#define PF_ROUTE        PF_NETLINK /* Alias to emulate 4.4BSD.  */

#define PF_PACKET       17      /* Packet family.  */

#define PF_ASH          18      /* Ash.  */

#define PF_ECONET       19      /* Acorn Econet.  */

#define PF_ATMSVC       20      /* ATM SVCs.  */

#define PF_SNA          22      /* Linux SNA Project */

#define PF_IRDA         23      /* IRDA sockets.  */

#define PF_PPPOX        24      /* PPPoX sockets.  */

#define PF_WANPIPE      25      /* Wanpipe API sockets.  */

#define PF_BLUETOOTH    31      /* Bluetooth sockets.  */

#define PF_MAX          32      /* For now..  */

/* Address families.  */

#define AF_UNSPEC       PF_UNSPEC

#define AF_LOCAL        PF_LOCAL

#define AF_UNIX         PF_UNIX

#define AF_FILE         PF_FILE

#define AF_INET         PF_INET

#define AF_AX25         PF_AX25

#define AF_IPX          PF_IPX

#define AF_APPLETALK    PF_APPLETALK

#define AF_NETROM       PF_NETROM

#define AF_BRIDGE       PF_BRIDGE

#define AF_ATMPVC       PF_ATMPVC

#define AF_X25          PF_X25

#define AF_INET6        PF_INET6

#define AF_ROSE         PF_ROSE

#define AF_DECnet       PF_DECnet

#define AF_NETBEUI      PF_NETBEUI

#define AF_SECURITY     PF_SECURITY

#define AF_KEY          PF_KEY

#define AF_NETLINK      PF_NETLINK

#define AF_ROUTE        PF_ROUTE

#define AF_PACKET       PF_PACKET

#define AF_ASH          PF_ASH

#define AF_ECONET       PF_ECONET

#define AF_ATMSVC       PF_ATMSVC

#define AF_SNA          PF_SNA

#define AF_IRDA         PF_IRDA

#define AF_PPPOX        PF_PPPOX

#define AF_WANPIPE      PF_WANPIPE

#define AF_BLUETOOTH    PF_BLUETOOTH

#define AF_MAX          PF_MAX

/*

 * Structure used by kernel to store most

 * addresses.

 */

struct sockaddr {

        sa_family_t     sa_family;      /* address family */

        char            sa_data[14];    /* actually longer; address value */

};

#define SOCK_MAXADDRLEN 255             /* longest possible addresses */

/*

 * Structure used by kernel to pass protocol

 * information in raw sockets.

 */

struct sockproto {

        u_short sp_family;              /* address family */

        u_short sp_protocol;            /* protocol */

};

/*

 * 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 structure storage alignment */

        char            __ss_pad2[_SS_PAD2SIZE];

};

/*

 * 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_MAXID    4

#define CTL_NET_RT_NAMES { \

        { 0, 0 }, \

        { "dump", CTLTYPE_STRUCT }, \

        { "flags", CTLTYPE_STRUCT }, \

        { "iflist", CTLTYPE_STRUCT }, \

}

/*

 * Maximum queue length specifiable by listen.

 */

#ifndef SOMAXCONN

#define SOMAXCONN       128

#endif

/*

 * 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  unsigned 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)         ((unsigned 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)))

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

/* 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 */

};

#include <sys/cdefs.h>

__BEGIN_DECLS

int     accept(int, struct sockaddr *, socklen_t *);

int     bind(int, const struct sockaddr *, socklen_t);

int     connect(int, const struct sockaddr *, socklen_t);

int     getpeername(int, struct sockaddr *, socklen_t *);

int     getsockname(int, struct sockaddr *, socklen_t *);

int     getsockopt(int, int, int, void *, socklen_t *);

int     listen(int, int);

ssize_t recv(int, void *, size_t, int);

ssize_t recvfrom(int, void *, size_t, int, struct sockaddr *, socklen_t *);

ssize_t recvmsg(int, struct msghdr *, int);

ssize_t send(int, const void *, size_t, int);

ssize_t sendto(int, const void *,

            size_t, int, const struct sockaddr *, socklen_t);

ssize_t sendmsg(int, const struct msghdr *, int);

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

int     setsockopt(int, int, int, const void *, socklen_t);

int     shutdown(int, int);

int     socket(int, int, int);

int     socketpair(int, int, int, int *);

__END_DECLS

#endif /* !_SYS_SOCKET_H_ */