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- /* Copyright (C) 1991, 1992, 1994 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, 1992 Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- #ifndef _SYS_SOCKET_H
-
- #define _SYS_SOCKET_H 1
- #include <features.h>
-
- __BEGIN_DECLS
-
- #define __need_size_t
- #include <stddef.h>
-
-
- /* Types of sockets. */
- enum __socket_type
- {
- SOCK_STREAM = 1, /* Sequenced, reliable, connection-based
- byte streams. */
- SOCK_DGRAM = 2, /* Connectionless, unreliable datagrams
- of fixed maximum length. */
- SOCK_RAW = 3, /* Raw protocol interface. */
- SOCK_RDM = 4, /* Reliably-delivered messages. */
- SOCK_SEQPACKET = 5, /* Sequenced, reliable, connection-based,
- datagrams of fixed maximum length. */
- };
-
- /* 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_INET 2 /* IP protocol family. */
- #define PF_IMPLINK 3 /* ARPAnet IMP protocol. */
- #define PF_PUP 4 /* PUP protocols. */
- #define PF_CHAOS 5 /* MIT Chaos protocols. */
- #define PF_NS 6 /* Xerox NS protocols. */
- #define PF_ISO 7 /* ISO protocols. */
- #define PF_OSI PF_ISO
- #define PF_ECMA 8 /* ECMA protocols. */
- #define PF_DATAKIT 9 /* AT&T Datakit protocols. */
- #define PF_CCITT 10 /* CCITT protocols (X.25 et al). */
- #define PF_SNA 11 /* IBM SNA protocol. */
- #define PF_DECnet 12 /* DECnet protocols. */
- #define PF_DLI 13 /* Direct data link interface. */
- #define PF_LAT 14 /* DEC Local Area Transport protocol. */
- #define PF_HYLINK 15 /* NSC Hyperchannel protocol. */
- #define PF_APPLETALK 16 /* Don't use this. */
- #define PF_ROUTE 17 /* Internal Routing Protocol. */
- #define PF_LINK 18 /* Link layer interface. */
- #define PF_XTP 19 /* eXpress Transfer Protocol (no AF). */
- #define PF_COIP 20 /* Connection-oriented IP, aka ST II. */
- #define PF_CNT 21 /* Computer Network Technology. */
- #define PF_RTIP 22 /* Help Identify RTIP packets. **/
- #define PF_IPX 23 /* Novell Internet Protocol. */
- #define PF_SIP 24 /* Simple Internet Protocol. */
- #define PF_PIP 25 /* Help Identify PIP packets. */
- #define PF_MAX 26
-
- /* Address families. */
- #define AF_UNSPEC PF_UNSPEC
- #define AF_LOCAL PF_LOCAL
- #define AF_UNIX PF_UNIX
- #define AF_INET PF_INET
- #define AF_IMPLINK PF_IMPLINK
- #define AF_PUP PF_PUP
- #define AF_CHAOS PF_CHAOS
- #define AF_NS PF_NS
- #define AF_ISO PF_ISO
- #define AF_OSI PF_OSI
- #define AF_ECMA PF_ECMA
- #define AF_DATAKIT PF_DATAKIT
- #define AF_CCITT PF_CCITT
- #define AF_SNA PF_SNA
- #define AF_DECnet PF_DECnet
- #define AF_DLI PF_DLI
- #define AF_LAT PF_LAT
- #define AF_HYLINK PF_HYLINK
- #define AF_APPLETALK PF_APPLETALK
- #define AF_ROUTE PF_ROUTE
- #define AF_LINK PF_LINK
- #define pseudo_AF_XTP PF_XTP
- #define AF_COIP PF_COIP
- #define AF_CNT PF_CNT
- #define pseudo_AF_RTIP PF_RTIP
- #define AF_IPX PF_IPX
- #define AF_SIP PF_SIP
- #define pseudo_AF_PIP PF_PIP
- #define AF_MAX PF_MAX
-
-
- /* Structure describing a generic socket address. */
- struct sockaddr
- {
- unsigned short int sa_family; /* Address family. */
- char sa_data[14]; /* Address data. */
- };
-
- /* This is the type we use for generic socket address arguments.
-
- NOTE: Since this functionality is volatile, I'm disabling the use of it for
- now.
-
- With GCC 2.6 and later, the funky union causes redeclarations or uses with
- any of the listed types to be allowed without complaint. */
- #if (!defined (__GNUC__) || __GNUC__ < 2 || \
- /*(__GNUC__ == 2 && __GNUC_MINOR__ < 6)*/ 1)
- #define __SOCKADDR_ARG struct sockaddr *
- #else
- /* Bring these names into being at top-level scope, in case they have not been
- defined yet. Add more `struct sockaddr_AF' types here as necessary. */
- struct sockaddr_in;
- struct sockaddr_un;
- struct sockaddr_ns;
- typedef union { struct sockaddr *__sa;
- struct sockaddr_in *__sa_in;
- struct sockaddr_un *__sa_un;
- struct sockaddr_ns *__sa_ns;
- } __SOCKADDR_ARG __attribute__ ((transparent_union));
- #endif
-
-
- /* Create a new socket of type TYPE in domain DOMAIN, using
- protocol PROTOCOL. If PROTOCOL is zero, one is chosen automatically.
- Returns a file descriptor for the new socket, or -1 for errors. */
- extern int socket __P ((int __domain, enum __socket_type __type,
- int __protocol));
-
- /* Create two new sockets, of type TYPE in domain DOMAIN and using
- protocol PROTOCOL, which are connected to each other, and put file
- descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero,
- one will be chosen automatically. Returns 0 on success, -1 for errors. */
- extern int socketpair __P ((int __domain, enum __socket_type __type,
- int __protocol, int __fds[2]));
-
- /* Give the socket FD the local address ADDR (which is LEN bytes long). */
- extern int bind __P ((int __fd, __SOCKADDR_ARG __addr, size_t __len));
-
- /* Put the local address of FD into *ADDR and its length in *LEN. */
- extern int getsockname __P ((int __fd, __SOCKADDR_ARG __addr,
- size_t *__len));
-
- /* Open a connection on socket FD to peer at ADDR (which LEN bytes long).
- For connectionless socket types, just set the default address to send to
- and the only address from which to accept transmissions.
- Return 0 on success, -1 for errors. */
- extern int connect __P ((int __fd, __SOCKADDR_ARG __addr, size_t __len));
-
- /* Put the address of the peer connected to socket FD into *ADDR
- (which is *LEN bytes long), and its actual length into *LEN. */
- extern int getpeername __P ((int __fd, __SOCKADDR_ARG __addr,
- size_t *__len));
-
-
- /* Bits in the FLAGS argument to `send', `recv', et al. */
- enum
- {
- MSG_OOB = 0x01, /* Process out-of-band data. */
- MSG_PEEK = 0x02, /* Peek at incoming messages. */
- MSG_DONTROUTE = 0x04, /* Don't use local routing. */
- MSG_EOR = 0x08, /* Data completes record. */
- MSG_TRUNC = 0x10, /* Data discarded before delivery. */
- MSG_CTRUNC = 0x20, /* Control data lost before delivery. */
- MSG_WAITALL = 0x40, /* Wait for full request or error. */
- MSG_DONTWAIT = 0x80, /* This message should be nonblocking. */
- };
-
- /* Send N bytes of BUF to socket FD. Returns the number sent or -1. */
- extern int send __P ((int __fd, __ptr_t __buf, size_t __n, int __flags));
-
- /* Read N bytes into BUF from socket FD.
- Returns the number read or -1 for errors. */
- extern int recv __P ((int __fd, __ptr_t __buf, size_t __n, int __flags));
-
- /* Send N bytes of BUF on socket FD to peer at address ADDR (which is
- ADDR_LEN bytes long). Returns the number sent, or -1 for errors. */
- extern int sendto __P ((int __fd, __ptr_t __buf, size_t __n, int __flags,
- __SOCKADDR_ARG __addr, size_t __addr_len));
-
- /* Read N bytes into BUF through socket FD.
- If ADDR is not NULL, fill in *ADDR_LEN bytes of it with tha address of
- the sender, and store the actual size of the address in *ADDR_LEN.
- Returns the number of bytes read or -1 for errors. */
- extern int recvfrom __P ((int __fd, __ptr_t __buf, size_t __n, int __flags,
- __SOCKADDR_ARG __addr, size_t *__addr_len));
-
-
-
- /* Structure describing messages sent by
- `sendmsg' and received by `recvmsg'. */
- struct msghdr
- {
- __ptr_t msg_name; /* Address to send to/receive from. */
- size_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_accrights; /* Access rights information. */
- size_t msg_accrightslen; /* Length of access rights information. */
- };
-
- /* Send a message described MESSAGE on socket FD.
- Returns the number of bytes sent, or -1 for errors. */
- extern int sendmsg __P ((int __fd, __const struct msghdr *__message,
- int __flags));
-
- /* Receive a message as described by MESSAGE from socket FD.
- Returns the number of bytes read or -1 for errors. */
- extern int recvmsg __P ((int __fd, struct msghdr *__message, int __flags));
-
-
- /* Protocol number used to manipulate socket-level options
- with `getsockopt' and `setsockopt'. */
- #define SOL_SOCKET 0xffff
-
- /* Socket-level options for `getsockopt' and `setsockopt'. */
- enum
- {
- SO_DEBUG = 0x0001, /* Record debugging information. */
- SO_ACCEPTCONN = 0x0002, /* Accept connections on socket. */
- SO_REUSEADDR = 0x0004, /* Allow reuse of local addresses. */
- SO_KEEPALIVE = 0x0008, /* Keep connections alive and send
- SIGPIPE when they die. */
- SO_DONTROUTE = 0x0010, /* Don't do local routing. */
- SO_BROADCAST = 0x0020, /* Allow transmission of
- broadcast messages. */
- SO_USELOOPBACK = 0x0040, /* Use the software loopback to avoid
- hardware use when possible. */
- SO_LINGER = 0x0080, /* Block on close of a reliable
- socket to transmit pending data. */
- SO_OOBINLINE = 0x0100, /* Receive out-of-band data in-band. */
-
- SO_REUSEPORT = 0x0200, /* Allow local address and port reuse. */
-
- SO_SNDBUF = 0x1001, /* Send buffer size. */
- SO_RCVBUF = 0x1002, /* Receive buffer. */
- SO_SNDLOWAT = 0x1003, /* Send low-water mark. */
- SO_RCVLOWAT = 0x1004, /* Receive low-water mark. */
- SO_SNDTIMEO = 0x1005, /* Send timeout. */
- SO_RCVTIMEO = 0x1006, /* Receive timeout. */
-
- SO_ERROR = 0x1007, /* Get and clear error status. */
- SO_STYLE = 0x1008, /* Get socket connection style. */
- SO_TYPE = SO_STYLE, /* Compatible name for SO_STYLE. */
- };
-
- /* Structure used to manipulate the SO_LINGER option. */
- struct linger
- {
- int l_onoff; /* Nonzero to linger on close. */
- int l_linger; /* Time to linger. */
- };
-
-
- /* Put the current value for socket FD's option OPTNAME at protocol level LEVEL
- into OPTVAL (which is *OPTLEN bytes long), and set *OPTLEN to the value's
- actual length. Returns 0 on success, -1 for errors. */
- extern int getsockopt __P ((int __fd, int __level, int __optname,
- __ptr_t __optval, size_t *__optlen));
-
- /* Set socket FD's option OPTNAME at protocol level LEVEL
- to *OPTVAL (which is OPTLEN bytes long).
- Returns 0 on success, -1 for errors. */
- extern int setsockopt __P ((int __fd, int __level, int __optname,
- __ptr_t __optval, size_t __optlen));
-
-
- /* Prepare to accept connections on socket FD.
- N connection requests will be queued before further requests are refused.
- Returns 0 on success, -1 for errors. */
- extern int listen __P ((int __fd, unsigned int __n));
-
- /* Await a connection on socket FD.
- When a connection arrives, open a new socket to communicate with it,
- set *ADDR (which is *ADDR_LEN bytes long) to the address of the connecting
- peer and *ADDR_LEN to the address's actual length, and return the
- new socket's descriptor, or -1 for errors. */
- extern int accept __P ((int __fd, __SOCKADDR_ARG __addr,
- size_t *__addr_len));
-
- /* Shut down all or part of the connection open on socket FD.
- HOW determines what to shut down:
- 0 = No more receptions;
- 1 = No more transmissions;
- 2 = No more receptions or transmissions.
- Returns 0 on success, -1 for errors. */
- extern int shutdown __P ((int __fd, int __how));
-
-
- __END_DECLS
-
- #endif /* sys/socket.h */
-