/* System-specific socket constants and types.  Linux version.   Copyright (C) 1991,92,94,95,96,97,98,99 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 Library General Public License as   published by the Free Software Foundation; either version 2 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   Library General Public License for more details.   You should have received a copy of the GNU Library General Public   License along with the GNU C Library; see the file COPYING.LIB.  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#if !defined _SYS_SOCKET_H && !defined _NETINET_IN_H# error "Never include <bits/socket.h> directly; use <sys/socket.h> instead."#endif#define	__need_size_t#define __need_NULL#include <stddef.h>#include <limits.h>#include <sys/types.h>/* Type for length arguments in socket calls.  */typedef unsigned int socklen_t;/* 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_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};/* 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_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_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.  */#if ULONG_MAX > 0xffffffff# define __ss_aligntype	__uint64_t#else# define __ss_aligntype	__uint32_t#endif#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_URG		= 0x800,#define	MSG_URG		MSG_URG    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  };/* Structure describing messages sent by   `sendmsg' and received by `recvmsg'.  */struct msghdr  {    __ptr_t 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.  */    __ptr_t msg_control;	/* Ancillary data (eg BSD filedesc passing). */    size_t msg_controllen;	/* Ancillary data buffer length.  */    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.  */    int cmsg_level;		/* Originating protocol.  */    int cmsg_type;		/* Protocol specific type.  */#if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2    unsigned char __cmsg_data[0]; /* Ancillary data.  */    /* XXX Perhaps this should be removed.  */#endif  };/* Ancillary data object manipulation macros.  */#if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2# 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 *) NULL)#define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \			 & ~(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))__BEGIN_DECLSextern struct cmsghdr *__cmsg_nxthdr __P ((struct msghdr *__mhdr,					   struct cmsghdr *__cmsg));__END_DECLS#ifdef __USE_EXTERN_INLINES# ifndef _EXTERN_INLINE#  define _EXTERN_INLINE extern __inline# endif_EXTERN_INLINE struct cmsghdr *__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_BSD    SCM_CREDENTIALS = 0x02,     /* Credentials passing.  */# define SCM_CREDENTIALS SCM_CREDENTIALS#endif    __SCM_CONNECT = 0x03	/* Data array is `struct scm_connect'.  */  };/* 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.  */};/* Get socket manipulation related informations from kernel headers.  */#include <asm/socket.h>/* 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 */