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

   Copyright (C) 1991-2018 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, see

   <http://www.gnu.org/licenses/>.  */

#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

/* Get the architecture-dependent definition of enum __socket_type.  */

#include <bits/socket_type.h>

/* 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_IB		27	/* Native InfiniBand address.  */

#define PF_MPLS		28	/* MPLS.  */

#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_CAIF		37	/* CAIF sockets.  */

#define PF_ALG		38	/* Algorithm sockets.  */

#define PF_NFC		39	/* NFC sockets.  */

#define PF_VSOCK	40	/* vSockets.  */

#define PF_KCM		41	/* Kernel Connection Multiplexor.  */

#define PF_QIPCRTR	42	/* Qualcomm IPC Router.  */

#define PF_SMC		43	/* SMC sockets.  */

#define PF_XDP		44	/* XDP sockets.  */

#define PF_MAX		45	/* 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_IB		PF_IB

#define AF_MPLS		PF_MPLS

#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_CAIF		PF_CAIF

#define AF_ALG		PF_ALG

#define AF_NFC		PF_NFC

#define AF_VSOCK	PF_VSOCK

#define AF_KCM		PF_KCM

#define AF_QIPCRTR	PF_QIPCRTR

#define AF_SMC		PF_SMC

#define AF_XDP		PF_XDP

#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

#define SOL_NETBEUI	267

#define SOL_LLC		268

#define SOL_DCCP	269

#define SOL_NETLINK	270

#define SOL_TIPC	271

#define SOL_RXRPC	272

#define SOL_PPPOL2TP	273

#define SOL_BLUETOOTH	274

#define SOL_PNPIPE	275

#define SOL_RDS		276

#define SOL_IUCV	277

#define SOL_CAIF	278

#define SOL_ALG		279

#define SOL_NFC		280

#define SOL_KCM		281

#define SOL_TLS		282

#define SOL_XDP		283

/* 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).  */

#define __ss_aligntype	unsigned long int

#define _SS_PADSIZE \

  (_SS_SIZE - __SOCKADDR_COMMON_SIZE - sizeof (__ss_aligntype))

struct sockaddr_storage

  {

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

    char __ss_padding[_SS_PADSIZE];

    __ss_aligntype __ss_align;	/* Force desired alignment.  */

  };

/* 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_WAITFORONE	= 0x10000, /* Wait for at least one packet to return.*/

#define MSG_WAITFORONE	MSG_WAITFORONE

    MSG_BATCH		= 0x40000, /* sendmmsg: more messages coming.  */

#define MSG_BATCH	MSG_BATCH

    MSG_ZEROCOPY	= 0x4000000, /* Use user data in kernel path.  */

#define MSG_ZEROCOPY	MSG_ZEROCOPY

    MSG_FASTOPEN	= 0x20000000, /* Send data in TCP SYN.  */

#define MSG_FASTOPEN	MSG_FASTOPEN

    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 __glibc_c99_flexarr_available

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

#endif

  };

/* Ancillary data object manipulation macros.  */

#if __glibc_c99_flexarr_available

# 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 (struct cmsghdr *) 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 (struct cmsghdr *) 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.  */

#ifndef __USE_MISC

# 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

#ifndef IOCSIZE_MASK

# define __SYS_SOCKET_H_undef_IOCSIZE_MASK

#endif

#ifndef IOCSIZE_SHIFT

# define __SYS_SOCKET_H_undef_IOCSIZE_SHIFT

#endif

#ifndef IOC_IN

# define __SYS_SOCKET_H_undef_IOC_IN

#endif

#ifndef IOC_INOUT

# define __SYS_SOCKET_H_undef_IOC_INOUT

#endif

#ifndef IOC_OUT

# define __SYS_SOCKET_H_undef_IOC_OUT

#endif

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

#include <asm/socket.h>

#ifndef __USE_MISC

# 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

#ifdef __SYS_SOCKET_H_undef_IOCSIZE_MASK

# undef __SYS_SOCKET_H_undef_IOCSIZE_MASK

# undef IOCSIZE_MASK

#endif

#ifdef __SYS_SOCKET_H_undef_IOCSIZE_SHIFT

# undef __SYS_SOCKET_H_undef_IOCSIZE_SHIFT

# undef IOCSIZE_SHIFT

#endif

#ifdef __SYS_SOCKET_H_undef_IOC_IN

# undef __SYS_SOCKET_H_undef_IOC_IN

# undef IOC_IN

#endif

#ifdef __SYS_SOCKET_H_undef_IOC_INOUT

# undef __SYS_SOCKET_H_undef_IOC_INOUT

# undef IOC_INOUT

#endif

#ifdef __SYS_SOCKET_H_undef_IOC_OUT

# undef __SYS_SOCKET_H_undef_IOC_OUT

# undef IOC_OUT

#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 */