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/* System-specific socket constants and types.  Linux version.

   Copyright (C) 1991, 1992, 1994-2001, 2004, 2006, 2007, 2008, 2009

   Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, write to the Free

   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

   02111-1307 USA.  */

#ifndef __BITS_SOCKET_H

#define __BITS_SOCKET_H

#ifndef _SYS_SOCKET_H

# error "Never include <bits/socket.h> directly; use <sys/socket.h> instead."

#endif

#define	__need_size_t

#include <stddef.h>

#include <sys/types.h>

/* Type for length arguments in socket calls.  */

#ifndef __socklen_t_defined

typedef __socklen_t socklen_t;

# define __socklen_t_defined

#endif

/* Types of sockets.  */

enum __socket_type

{

  SOCK_STREAM = 1,		/* Sequenced, reliable, connection-based

				   byte streams.  */

#define SOCK_STREAM SOCK_STREAM

  SOCK_DGRAM = 2,		/* Connectionless, unreliable datagrams

				   of fixed maximum length.  */

#define SOCK_DGRAM SOCK_DGRAM

  SOCK_RAW = 3,			/* Raw protocol interface.  */

#define SOCK_RAW SOCK_RAW

  SOCK_RDM = 4,			/* Reliably-delivered messages.  */

#define SOCK_RDM SOCK_RDM

  SOCK_SEQPACKET = 5,		/* Sequenced, reliable, connection-based,

				   datagrams of fixed maximum length.  */

#define SOCK_SEQPACKET SOCK_SEQPACKET

  SOCK_DCCP = 6,		/* Datagram Congestion Control Protocol.  */

#define SOCK_DCCP SOCK_DCCP

  SOCK_PACKET = 10,		/* Linux specific way of getting packets

				   at the dev level.  For writing rarp and

				   other similar things on the user level. */

#define SOCK_PACKET SOCK_PACKET

  /* Flags to be ORed into the type parameter of socket and socketpair and

     used for the flags parameter of paccept.  */

  SOCK_CLOEXEC = 010000000,	/* Atomically set close-on-exec flag for the

				   new descriptor(s).  */

#define SOCK_CLOEXEC SOCK_CLOEXEC

#undef SOCK_NONBLOCK

  SOCK_NONBLOCK = 0x40000000	/* Atomically mark descriptor(s) as

				   non-blocking.  */

#define SOCK_NONBLOCK SOCK_NONBLOCK

};

/* Protocol families.  */

#define	PF_UNSPEC	0	/* Unspecified.  */

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

#define	PF_UNIX		PF_LOCAL /* POSIX 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_RDS		21	/* RDS sockets.  */

#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_LLC		26	/* Linux LLC.  */

#define PF_CAN		29	/* Controller Area Network.  */

#define PF_TIPC		30	/* TIPC sockets.  */

#define	PF_BLUETOOTH	31	/* Bluetooth sockets.  */

#define	PF_IUCV		32	/* IUCV sockets.  */

#define PF_RXRPC	33	/* RxRPC sockets.  */

#define PF_ISDN		34	/* mISDN sockets.  */

#define PF_PHONET	35	/* Phonet sockets.  */

#define PF_IEEE802154	36	/* IEEE 802.15.4 sockets.  */

#define	PF_MAX		37	/* 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_RDS		PF_RDS

#define	AF_SNA		PF_SNA

#define	AF_IRDA		PF_IRDA

#define	AF_PPPOX	PF_PPPOX

#define	AF_WANPIPE	PF_WANPIPE

#define AF_LLC		PF_LLC

#define AF_CAN		PF_CAN

#define AF_TIPC		PF_TIPC

#define	AF_BLUETOOTH	PF_BLUETOOTH

#define	AF_IUCV		PF_IUCV

#define AF_RXRPC	PF_RXRPC

#define AF_ISDN		PF_ISDN

#define AF_PHONET	PF_PHONET

#define AF_IEEE802154	PF_IEEE802154

#define	AF_MAX		PF_MAX

/* Socket level values.  Others are defined in the appropriate headers.

   XXX These definitions also should go into the appropriate headers as

   far as they are available.  */

#define SOL_RAW		255

#define SOL_DECNET      261

#define SOL_X25         262

#define SOL_PACKET	263

#define SOL_ATM		264	/* ATM layer (cell level).  */

#define SOL_AAL		265	/* ATM Adaption Layer (packet level).  */

#define SOL_IRDA	266

/* Maximum queue length specifiable by listen.  */

#define SOMAXCONN	128

/* Get the definition of the macro to define the common sockaddr members.  */

#include <bits/sockaddr.h>

/* Structure describing a generic socket address.  */

struct sockaddr

  {

    __SOCKADDR_COMMON (sa_);	/* Common data: address family and length.  */

    char sa_data[14];		/* Address data.  */

  };

/* Structure large enough to hold any socket address (with the historical

   exception of AF_UNIX).  We reserve 128 bytes.  */

#define __ss_aligntype	unsigned long int

#define _SS_SIZE	128

#define _SS_PADSIZE	(_SS_SIZE - (2 * sizeof (__ss_aligntype)))

struct sockaddr_storage

  {

    __SOCKADDR_COMMON (ss_);	/* Address family, etc.  */

    __ss_aligntype __ss_align;	/* Force desired alignment.  */

    char __ss_padding[_SS_PADSIZE];

  };

/* Bits in the FLAGS argument to `send', `recv', et al.  */

enum

  {

    MSG_OOB		= 0x01,	/* Process out-of-band data.  */

#define MSG_OOB		MSG_OOB

    MSG_PEEK		= 0x02,	/* Peek at incoming messages.  */

#define MSG_PEEK	MSG_PEEK

    MSG_DONTROUTE	= 0x04,	/* Don't use local routing.  */

#define MSG_DONTROUTE	MSG_DONTROUTE

#ifdef __USE_GNU

    /* DECnet uses a different name.  */

    MSG_TRYHARD		= MSG_DONTROUTE,

# define MSG_TRYHARD	MSG_DONTROUTE

#endif

    MSG_CTRUNC		= 0x08,	/* Control data lost before delivery.  */

#define MSG_CTRUNC	MSG_CTRUNC

    MSG_PROXY		= 0x10,	/* Supply or ask second address.  */

#define MSG_PROXY	MSG_PROXY

    MSG_TRUNC		= 0x20,

#define	MSG_TRUNC	MSG_TRUNC

    MSG_DONTWAIT	= 0x40, /* Nonblocking IO.  */

#define	MSG_DONTWAIT	MSG_DONTWAIT

    MSG_EOR		= 0x80, /* End of record.  */

#define	MSG_EOR		MSG_EOR

    MSG_WAITALL		= 0x100, /* Wait for a full request.  */

#define	MSG_WAITALL	MSG_WAITALL

    MSG_FIN		= 0x200,

#define	MSG_FIN		MSG_FIN

    MSG_SYN		= 0x400,

#define	MSG_SYN		MSG_SYN

    MSG_CONFIRM		= 0x800, /* Confirm path validity.  */

#define	MSG_CONFIRM	MSG_CONFIRM

    MSG_RST		= 0x1000,

#define	MSG_RST		MSG_RST

    MSG_ERRQUEUE	= 0x2000, /* Fetch message from error queue.  */

#define	MSG_ERRQUEUE	MSG_ERRQUEUE

    MSG_NOSIGNAL	= 0x4000, /* Do not generate SIGPIPE.  */

#define	MSG_NOSIGNAL	MSG_NOSIGNAL

    MSG_MORE		= 0x8000,  /* Sender will send more.  */

#define	MSG_MORE	MSG_MORE

    MSG_CMSG_CLOEXEC	= 0x40000000	/* Set close_on_exit for file

                                           descriptor received through

                                           SCM_RIGHTS.  */

#define MSG_CMSG_CLOEXEC MSG_CMSG_CLOEXEC

  };

/* Structure describing messages sent by

   `sendmsg' and received by `recvmsg'.  */

struct msghdr

  {

    void *msg_name;		/* Address to send to/receive from.  */

    socklen_t msg_namelen;	/* Length of address data.  */

    struct iovec *msg_iov;	/* Vector of data to send/receive into.  */

    size_t msg_iovlen;		/* Number of elements in the vector.  */

    void *msg_control;		/* Ancillary data (eg BSD filedesc passing). */

    size_t msg_controllen;	/* Ancillary data buffer length.

				   !! The type should be socklen_t but the

				   definition of the kernel is incompatible

				   with this.  */

    int msg_flags;		/* Flags on received message.  */

  };

/* Structure used for storage of ancillary data object information.  */

struct cmsghdr

  {

    size_t cmsg_len;		/* Length of data in cmsg_data plus length

				   of cmsghdr structure.

				   !! The type should be socklen_t but the

				   definition of the kernel is incompatible

				   with this.  */

    int cmsg_level;		/* Originating protocol.  */

    int cmsg_type;		/* Protocol specific type.  */

#if (!defined __STRICT_ANSI__ && __GNUC__ >= 2) || __STDC_VERSION__ >= 199901L

    __extension__ unsigned char __cmsg_data __flexarr; /* Ancillary data.  */

#endif

  };

/* Ancillary data object manipulation macros.  */

#if (!defined __STRICT_ANSI__ && __GNUC__ >= 2) || __STDC_VERSION__ >= 199901L

# define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data)

#else

# define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1))

#endif

#define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg)

#define CMSG_FIRSTHDR(mhdr) \

  ((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr)		      \

   ? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) 0)

#define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \

			 & (size_t) ~(sizeof (size_t) - 1))

#define CMSG_SPACE(len) (CMSG_ALIGN (len) \

			 + CMSG_ALIGN (sizeof (struct cmsghdr)))

#define CMSG_LEN(len)   (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))

extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,

				      struct cmsghdr *__cmsg) __THROW;

#ifdef __USE_EXTERN_INLINES

# ifndef _EXTERN_INLINE

#  define _EXTERN_INLINE __extern_inline

# endif

_EXTERN_INLINE struct cmsghdr *

__NTH (__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg))

{

  if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))

    /* The kernel header does this so there may be a reason.  */

    return 0;

  __cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg

			       + CMSG_ALIGN (__cmsg->cmsg_len));

  if ((unsigned char *) (__cmsg + 1) > ((unsigned char *) __mhdr->msg_control

					+ __mhdr->msg_controllen)

      || ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len)

	  > ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)))

    /* No more entries.  */

    return 0;

  return __cmsg;

}

#endif	/* Use `extern inline'.  */

/* Socket level message types.  This must match the definitions in

   <linux/socket.h>.  */

enum

  {

    SCM_RIGHTS = 0x01		/* Transfer file descriptors.  */

#define SCM_RIGHTS SCM_RIGHTS

#ifdef __USE_GNU

    , SCM_CREDENTIALS = 0x02	/* Credentials passing.  */

# define SCM_CREDENTIALS SCM_CREDENTIALS

#endif

  };

#ifdef __USE_GNU

/* User visible structure for SCM_CREDENTIALS message */

struct ucred

{

  pid_t pid;			/* PID of sending process.  */

  uid_t uid;			/* UID of sending process.  */

  gid_t gid;			/* GID of sending process.  */

};

#endif

/* Ugly workaround for unclean kernel headers.  */

#if !defined __USE_MISC && !defined __USE_GNU

# ifndef FIOGETOWN

#  define __SYS_SOCKET_H_undef_FIOGETOWN

# endif

# ifndef FIOSETOWN

#  define __SYS_SOCKET_H_undef_FIOSETOWN

# endif

# ifndef SIOCATMARK

#  define __SYS_SOCKET_H_undef_SIOCATMARK

# endif

# ifndef SIOCGPGRP

#  define __SYS_SOCKET_H_undef_SIOCGPGRP

# endif

# ifndef SIOCGSTAMP

#  define __SYS_SOCKET_H_undef_SIOCGSTAMP

# endif

# ifndef SIOCGSTAMPNS

#  define __SYS_SOCKET_H_undef_SIOCGSTAMPNS

# endif

# ifndef SIOCSPGRP

#  define __SYS_SOCKET_H_undef_SIOCSPGRP

# endif

#endif

/* Get socket manipulation related informations from kernel headers.  */

#include <asm/socket.h>

#if !defined __USE_MISC && !defined __USE_GNU

# ifdef __SYS_SOCKET_H_undef_FIOGETOWN

#  undef __SYS_SOCKET_H_undef_FIOGETOWN

#  undef FIOGETOWN

# endif

# ifdef __SYS_SOCKET_H_undef_FIOSETOWN

#  undef __SYS_SOCKET_H_undef_FIOSETOWN

#  undef FIOSETOWN

# endif

# ifdef __SYS_SOCKET_H_undef_SIOCATMARK

#  undef __SYS_SOCKET_H_undef_SIOCATMARK

#  undef SIOCATMARK

# endif

# ifdef __SYS_SOCKET_H_undef_SIOCGPGRP

#  undef __SYS_SOCKET_H_undef_SIOCGPGRP

#  undef SIOCGPGRP

# endif

# ifdef __SYS_SOCKET_H_undef_SIOCGSTAMP

#  undef __SYS_SOCKET_H_undef_SIOCGSTAMP

#  undef SIOCGSTAMP

# endif

# ifdef __SYS_SOCKET_H_undef_SIOCGSTAMPNS

#  undef __SYS_SOCKET_H_undef_SIOCGSTAMPNS

#  undef SIOCGSTAMPNS

# endif

# ifdef __SYS_SOCKET_H_undef_SIOCSPGRP

#  undef __SYS_SOCKET_H_undef_SIOCSPGRP

#  undef SIOCSPGRP

# endif

#endif

/* Structure used to manipulate the SO_LINGER option.  */

struct linger

  {

    int l_onoff;		/* Nonzero to linger on close.  */

    int l_linger;		/* Time to linger.  */

  };

#endif	/* bits/socket.h */