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+/* System-specific socket constants and types. Linux version.
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+ Copyright (C) 1991,92,94,95,96,97,98,99 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Library General Public License as
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+ published by the Free Software Foundation; either version 2 of the
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+ License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Library General Public License for more details.
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+
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+ You should have received a copy of the GNU Library General Public
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+ License along with the GNU C Library; see the file COPYING.LIB. If not,
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+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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+ Boston, MA 02111-1307, USA. */
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+
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+#ifndef __BITS_SOCKET_H
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+#define __BITS_SOCKET_H
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+
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+#if !defined _SYS_SOCKET_H && !defined _NETINET_IN_H
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+# error "Never include <bits/socket.h> directly; use <sys/socket.h> instead."
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+#endif
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+
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+#define __need_size_t
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+#define __need_NULL
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+#include <stddef.h>
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+
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+#include <limits.h>
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+#include <sys/types.h>
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+
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+/* Type for length arguments in socket calls. */
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+typedef unsigned int socklen_t;
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+
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+/* Types of sockets. */
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+enum __socket_type
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+{
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+ SOCK_STREAM = 1, /* Sequenced, reliable, connection-based
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+ byte streams. */
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+#define SOCK_STREAM SOCK_STREAM
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+ SOCK_DGRAM = 2, /* Connectionless, unreliable datagrams
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+ of fixed maximum length. */
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+#define SOCK_DGRAM SOCK_DGRAM
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+ SOCK_RAW = 3, /* Raw protocol interface. */
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+#define SOCK_RAW SOCK_RAW
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+ SOCK_RDM = 4, /* Reliably-delivered messages. */
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+#define SOCK_RDM SOCK_RDM
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+ SOCK_SEQPACKET = 5, /* Sequenced, reliable, connection-based,
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+ datagrams of fixed maximum length. */
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+#define SOCK_SEQPACKET SOCK_SEQPACKET
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+ SOCK_PACKET = 10 /* Linux specific way of getting packets
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+ at the dev level. For writing rarp and
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+ other similar things on the user level. */
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+#define SOCK_PACKET SOCK_PACKET
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+};
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+
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+/* Protocol families. */
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+#define PF_UNSPEC 0 /* Unspecified. */
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+#define PF_LOCAL 1 /* Local to host (pipes and file-domain). */
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+#define PF_UNIX PF_LOCAL /* Old BSD name for PF_LOCAL. */
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+#define PF_FILE PF_LOCAL /* Another non-standard name for PF_LOCAL. */
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+#define PF_INET 2 /* IP protocol family. */
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+#define PF_AX25 3 /* Amateur Radio AX.25. */
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+#define PF_IPX 4 /* Novell Internet Protocol. */
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+#define PF_APPLETALK 5 /* Appletalk DDP. */
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+#define PF_NETROM 6 /* Amateur radio NetROM. */
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+#define PF_BRIDGE 7 /* Multiprotocol bridge. */
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+#define PF_ATMPVC 8 /* ATM PVCs. */
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+#define PF_X25 9 /* Reserved for X.25 project. */
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+#define PF_INET6 10 /* IP version 6. */
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+#define PF_ROSE 11 /* Amateur Radio X.25 PLP. */
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+#define PF_DECnet 12 /* Reserved for DECnet project. */
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+#define PF_NETBEUI 13 /* Reserved for 802.2LLC project. */
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+#define PF_SECURITY 14 /* Security callback pseudo AF. */
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+#define PF_KEY 15 /* PF_KEY key management API. */
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+#define PF_NETLINK 16
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+#define PF_ROUTE PF_NETLINK /* Alias to emulate 4.4BSD. */
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+#define PF_PACKET 17 /* Packet family. */
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+#define PF_ASH 18 /* Ash. */
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+#define PF_ECONET 19 /* Acorn Econet. */
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+#define PF_ATMSVC 20 /* ATM SVCs. */
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+#define PF_SNA 22 /* Linux SNA Project */
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+#define PF_IRDA 23 /* IRDA sockets. */
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+#define PF_MAX 32 /* For now.. */
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+
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+/* Address families. */
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+#define AF_UNSPEC PF_UNSPEC
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+#define AF_LOCAL PF_LOCAL
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+#define AF_UNIX PF_UNIX
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+#define AF_FILE PF_FILE
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+#define AF_INET PF_INET
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+#define AF_AX25 PF_AX25
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+#define AF_IPX PF_IPX
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+#define AF_APPLETALK PF_APPLETALK
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+#define AF_NETROM PF_NETROM
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+#define AF_BRIDGE PF_BRIDGE
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+#define AF_ATMPVC PF_ATMPVC
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+#define AF_X25 PF_X25
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+#define AF_INET6 PF_INET6
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+#define AF_ROSE PF_ROSE
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+#define AF_DECnet PF_DECnet
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+#define AF_NETBEUI PF_NETBEUI
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+#define AF_SECURITY PF_SECURITY
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+#define AF_KEY PF_KEY
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+#define AF_NETLINK PF_NETLINK
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+#define AF_ROUTE PF_ROUTE
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+#define AF_PACKET PF_PACKET
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+#define AF_ASH PF_ASH
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+#define AF_ECONET PF_ECONET
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+#define AF_ATMSVC PF_ATMSVC
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+#define AF_SNA PF_SNA
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+#define AF_IRDA PF_IRDA
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+#define AF_MAX PF_MAX
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+
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+/* Socket level values. Others are defined in the appropriate headers.
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+
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+ XXX These definitions also should go into the appropriate headers as
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+ far as they are available. */
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+#define SOL_RAW 255
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+#define SOL_DECNET 261
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+#define SOL_X25 262
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+#define SOL_PACKET 263
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+#define SOL_ATM 264 /* ATM layer (cell level). */
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+#define SOL_AAL 265 /* ATM Adaption Layer (packet level). */
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+#define SOL_IRDA 266
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+
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+/* Maximum queue length specifiable by listen. */
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+#define SOMAXCONN 128
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+
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+/* Get the definition of the macro to define the common sockaddr members. */
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+#include <bits/sockaddr.h>
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+
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+/* Structure describing a generic socket address. */
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+struct sockaddr
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+ {
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+ __SOCKADDR_COMMON (sa_); /* Common data: address family and length. */
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+ char sa_data[14]; /* Address data. */
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+ };
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+
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+
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+/* Structure large enough to hold any socket address (with the historical
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+ exception of AF_UNIX). We reserve 128 bytes. */
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+#if ULONG_MAX > 0xffffffff
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+# define __ss_aligntype __uint64_t
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+#else
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+# define __ss_aligntype __uint32_t
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+#endif
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+#define _SS_SIZE 128
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+#define _SS_PADSIZE (_SS_SIZE - (2 * sizeof (__ss_aligntype)))
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+
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+struct sockaddr_storage
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+ {
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+ __SOCKADDR_COMMON (__ss_); /* Address family, etc. */
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+ __ss_aligntype __ss_align; /* Force desired alignment. */
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+ char __ss_padding[_SS_PADSIZE];
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+ };
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+
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+
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+/* Bits in the FLAGS argument to `send', `recv', et al. */
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+enum
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+ {
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+ MSG_OOB = 0x01, /* Process out-of-band data. */
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+#define MSG_OOB MSG_OOB
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+ MSG_PEEK = 0x02, /* Peek at incoming messages. */
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+#define MSG_PEEK MSG_PEEK
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+ MSG_DONTROUTE = 0x04, /* Don't use local routing. */
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+#define MSG_DONTROUTE MSG_DONTROUTE
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+#ifdef __USE_GNU
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+ /* DECnet uses a different name. */
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+ MSG_TRYHARD = MSG_DONTROUTE,
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+# define MSG_TRYHARD MSG_DONTROUTE
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+#endif
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+ MSG_CTRUNC = 0x08, /* Control data lost before delivery. */
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+#define MSG_CTRUNC MSG_CTRUNC
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+ MSG_PROXY = 0x10, /* Supply or ask second address. */
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+#define MSG_PROXY MSG_PROXY
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+ MSG_TRUNC = 0x20,
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+#define MSG_TRUNC MSG_TRUNC
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+ MSG_DONTWAIT = 0x40, /* Nonblocking IO. */
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+#define MSG_DONTWAIT MSG_DONTWAIT
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+ MSG_EOR = 0x80, /* End of record. */
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+#define MSG_EOR MSG_EOR
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+ MSG_WAITALL = 0x100, /* Wait for a full request. */
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+#define MSG_WAITALL MSG_WAITALL
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+ MSG_FIN = 0x200,
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+#define MSG_FIN MSG_FIN
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+ MSG_SYN = 0x400,
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+#define MSG_SYN MSG_SYN
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+ MSG_URG = 0x800,
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+#define MSG_URG MSG_URG
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+ MSG_RST = 0x1000,
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+#define MSG_RST MSG_RST
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+ MSG_ERRQUEUE = 0x2000, /* Fetch message from error queue. */
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+#define MSG_ERRQUEUE MSG_ERRQUEUE
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+ MSG_NOSIGNAL = 0x4000 /* Do not generate SIGPIPE. */
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+#define MSG_NOSIGNAL MSG_NOSIGNAL
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+ };
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+
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+
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+/* Structure describing messages sent by
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+ `sendmsg' and received by `recvmsg'. */
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+struct msghdr
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+ {
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+ __ptr_t msg_name; /* Address to send to/receive from. */
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+ socklen_t msg_namelen; /* Length of address data. */
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+
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+ struct iovec *msg_iov; /* Vector of data to send/receive into. */
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+ size_t msg_iovlen; /* Number of elements in the vector. */
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+
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+ __ptr_t msg_control; /* Ancillary data (eg BSD filedesc passing). */
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+ size_t msg_controllen; /* Ancillary data buffer length. */
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+
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+ int msg_flags; /* Flags on received message. */
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+ };
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+
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+/* Structure used for storage of ancillary data object information. */
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+struct cmsghdr
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+ {
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+ size_t cmsg_len; /* Length of data in cmsg_data plus length
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+ of cmsghdr structure. */
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+ int cmsg_level; /* Originating protocol. */
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+ int cmsg_type; /* Protocol specific type. */
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+#if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2
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+ unsigned char __cmsg_data[0]; /* Ancillary data. */
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+ /* XXX Perhaps this should be removed. */
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+#endif
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+ };
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+
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+/* Ancillary data object manipulation macros. */
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+#if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2
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+# define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data)
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+#else
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+# define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1))
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+#endif
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+#define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg)
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+#define CMSG_FIRSTHDR(mhdr) \
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+ ((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr) \
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+ ? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) NULL)
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+#define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \
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+ & ~(sizeof (size_t) - 1))
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+#define CMSG_SPACE(len) (CMSG_ALIGN (len) \
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+ + CMSG_ALIGN (sizeof (struct cmsghdr)))
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+#define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
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+
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+extern struct cmsghdr *__cmsg_nxthdr __P ((struct msghdr *__mhdr,
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+ struct cmsghdr *__cmsg));
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+#ifdef __USE_EXTERN_INLINES
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+# ifndef _EXTERN_INLINE
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+# define _EXTERN_INLINE extern __inline
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+# endif
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+_EXTERN_INLINE struct cmsghdr *
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+__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg) __THROW
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+{
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+ if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
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+ /* The kernel header does this so there may be a reason. */
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+ return 0;
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+
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+ __cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg
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+ + CMSG_ALIGN (__cmsg->cmsg_len));
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+ if ((unsigned char *) (__cmsg + 1) >= ((unsigned char *) __mhdr->msg_control
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+ + __mhdr->msg_controllen)
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+ || ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len)
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+ >= ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)))
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+ /* No more entries. */
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+ return 0;
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+ return __cmsg;
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+}
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+#endif /* Use `extern inline'. */
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+
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+/* Socket level message types. This must match the definitions in
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+ <linux/socket.h>. */
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+enum
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+ {
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+ SCM_RIGHTS = 0x01, /* Transfer file descriptors. */
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+#define SCM_RIGHTS SCM_RIGHTS
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+#ifdef __USE_BSD
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+ SCM_CREDENTIALS = 0x02, /* Credentials passing. */
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+# define SCM_CREDENTIALS SCM_CREDENTIALS
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+#endif
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+ __SCM_CONNECT = 0x03 /* Data array is `struct scm_connect'. */
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+ };
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+
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+/* User visible structure for SCM_CREDENTIALS message */
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+
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+struct ucred
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+{
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+ pid_t pid; /* PID of sending process. */
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+ uid_t uid; /* UID of sending process. */
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+ gid_t gid; /* GID of sending process. */
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+};
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+
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+/* Get socket manipulation related informations from kernel headers. */
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+#include <asm/socket.h>
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+
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+
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+/* Structure used to manipulate the SO_LINGER option. */
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+struct linger
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+ {
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+ int l_onoff; /* Nonzero to linger on close. */
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+ int l_linger; /* Time to linger. */
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+ };
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+
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+#endif /* bits/socket.h */
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