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-rw-r--r--socket/sys/socket.h181
1 files changed, 181 insertions, 0 deletions
diff --git a/socket/sys/socket.h b/socket/sys/socket.h
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+++ b/socket/sys/socket.h
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+/* Declarations of socket constants, types, and functions.
+Copyright (C) 1991, 92, 94, 95, 96 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., 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>
+
+
+/* This operating system-specific header file defines the SOCK_*, PF_*,
+ AF_*, MSG_*, SOL_*, and SO_* constants, and the `struct sockaddr',
+ `struct msghdr', and `struct linger' types. */
+#include <socketbits.h>
+
+
+/* This is the type we use for generic socket address arguments.
+
+ With GCC 2.7 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__ < 7))
+#define __SOCKADDR_ARG struct sockaddr *
+#define __CONST_SOCKADDR_ARG __const struct sockaddr *
+#else
+/* Add more `struct sockaddr_AF' types here as necessary.
+ These are all the ones I found on NetBSD and Linux. */
+#define __SOCKADDR_ALLTYPES \
+ __SOCKADDR_ONETYPE (sockaddr) \
+ __SOCKADDR_ONETYPE (sockaddr_at) \
+ __SOCKADDR_ONETYPE (sockaddr_ax25) \
+ __SOCKADDR_ONETYPE (sockaddr_dl) \
+ __SOCKADDR_ONETYPE (sockaddr_eon) \
+ __SOCKADDR_ONETYPE (sockaddr_in) \
+ __SOCKADDR_ONETYPE (sockaddr_in6) \
+ __SOCKADDR_ONETYPE (sockaddr_inarp) \
+ __SOCKADDR_ONETYPE (sockaddr_ipx) \
+ __SOCKADDR_ONETYPE (sockaddr_iso) \
+ __SOCKADDR_ONETYPE (sockaddr_ns) \
+ __SOCKADDR_ONETYPE (sockaddr_un) \
+ __SOCKADDR_ONETYPE (sockaddr_x25)
+
+#define __SOCKADDR_ONETYPE(type) struct type *__##type##__;
+typedef union { __SOCKADDR_ALLTYPES
+ } __SOCKADDR_ARG __attribute__ ((__transparent_union__));
+#undef __SOCKADDR_ONETYPE
+#define __SOCKADDR_ONETYPE(type) __const struct type *__##type##__;
+typedef union { __SOCKADDR_ALLTYPES
+ } __CONST_SOCKADDR_ARG __attribute__ ((__transparent_union__));
+#undef __SOCKADDR_ONETYPE
+#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, int __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, int __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, __CONST_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,
+ __CONST_SOCKADDR_ARG __addr, size_t __len));
+extern int connect __P ((int __fd,
+ __CONST_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));
+
+
+/* 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));
+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,
+ __CONST_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));
+
+
+/* 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));
+
+
+/* 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));
+
+
+/* FDTYPE is S_IFSOCK or another S_IF* macro defined in <sys/stat.h>;
+ returns 1 if FD is open on an object of the indicated type, 0 if not,
+ or -1 for errors (setting errno). */
+extern int isfdtype __P ((int __fd, int __fdtype));
+
+__END_DECLS
+
+#endif /* sys/socket.h */