diff options
Diffstat (limited to 'include/sys/socket.h')
| -rw-r--r-- | include/sys/socket.h | 261 |
1 files changed, 166 insertions, 95 deletions
diff --git a/include/sys/socket.h b/include/sys/socket.h index 3a898ee13..7642e7502 100644 --- a/include/sys/socket.h +++ b/include/sys/socket.h @@ -1,136 +1,207 @@ -#ifndef _SYS_SOCKET_H -#define _SYS_SOCKET_H +/* Declarations of socket constants, types, and functions. + 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 _SYS_SOCKET_H +#define _SYS_SOCKET_H 1 #include <features.h> -#include <errno.h> -#include <sys/types.h> -#include <linux/socket.h> -#ifdef _MIT_POSIX_THREADS -#include <pthread/mit/posix.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 <bits/socket.h> + +#ifdef __USE_BSD +/* This is the 4.3 BSD `struct sockaddr' format, which is used as wire + format in the grotty old 4.3 `talk' protocol. */ +struct osockaddr + { + unsigned short int sa_family; + unsigned char sa_data[14]; + }; #endif -__BEGIN_DECLS +/* The following constants should be used for the second parameter of + `shutdown'. */ +enum +{ + SHUT_RD = 0, /* No more receptions. */ +#define SHUT_RD SHUT_RD + SHUT_WR, /* No more transmissions. */ +#define SHUT_WR SHUT_WR + SHUT_RDWR /* No more receptions or transmissions. */ +#define SHUT_RDWR SHUT_RDWR +}; + +/* 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. + G++ 2.7 does not support transparent unions so there we want the + old-style declaration, too. */ +#if (!defined __GNUC__ || __GNUC__ < 2 || defined __cplusplus || \ + (__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 -/* struct msghdr is not defined in linux 1.2. This will allow sendmsg - and recvmsg in libc 5.2.9 to compile under 1.2.x and shouldn't cause - any problem for 1.3.x */ -struct msghdr; /* 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. */ -int socket __P ((int __family, int __type, int __protocol)); + 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. */ -int socketpair __P ((int __family, int __type, int __protocol, - int __sockvec[2])); - -/* Give the socket FD the local address ADDR (which is LEN bytes - long). */ -int bind __P ((int __sockfd, __const struct sockaddr *__my_addr, - int __addrlen)); - -/* 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. */ -int connect __P ((int __sockfd, __const struct sockaddr *__serv_addr, - int __addrlen)); + 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])); -/* 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. */ -int listen __P ((int __sockfd, 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. */ -int accept __P ((int __sockfd, __const struct sockaddr *__peer, - int *__paddrlen)); - -/* 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. */ -int getsockopt __P ((int __s, int __level, int __optname, - void *__optval, int *__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. */ -int setsockopt __P ((int __s, int __level, int __optname, - __const void *__optval, int optlen)); +/* Give the socket FD the local address ADDR (which is LEN bytes long). */ +extern int bind __P ((int __fd, __CONST_SOCKADDR_ARG __addr, socklen_t __len)); /* Put the local address of FD into *ADDR and its length in *LEN. */ -int getsockname __P ((int __sockfd, struct sockaddr *__addr, - int *__paddrlen)); +extern int getsockname __P ((int __fd, __SOCKADDR_ARG __addr, + socklen_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, socklen_t __len)); +extern int connect __P ((int __fd, + __CONST_SOCKADDR_ARG __addr, socklen_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. */ -int getpeername __P ((int __sockfd, struct sockaddr *__peer, - int *__paddrlen)); +extern int getpeername __P ((int __fd, __SOCKADDR_ARG __addr, + socklen_t *__len)); + -/* Send N bytes of BUF to socket FD. Returns the number sent or -1. */ -int send __P ((int __sockfd, __const void *__buff, size_t __len, - unsigned int __flags)); +/* Send N bytes of BUF to socket FD. Returns the number sent or -1. */ +extern int __send __P ((int __fd, __const __ptr_t __buf, size_t __n, + int __flags)); +extern int send __P ((int __fd, __const __ptr_t __buf, size_t __n, + int __flags)); /* Read N bytes into BUF from socket FD. Returns the number read or -1 for errors. */ -int recv __P ((int __sockfd, void *__buff, size_t __len, - unsigned int __flags)); +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. */ -int sendto __P ((int __sockfd, __const void *__buff, size_t __len, - unsigned int __flags, __const struct sockaddr *__to, - int __tolen)); + ADDR_LEN bytes long). Returns the number sent, or -1 for errors. */ +extern int sendto __P ((int __fd, __const __ptr_t __buf, size_t __n, + int __flags, __CONST_SOCKADDR_ARG __addr, + socklen_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. */ -int recvfrom __P ((int __sockfd, void *__buff, size_t __len, - unsigned int __flags, struct sockaddr *__from, - int *__fromlen)); + 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, socklen_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, - unsigned int __flags)); + 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, - unsigned int __flags)); - +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, socklen_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, + __const __ptr_t __optval, socklen_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, + socklen_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. + SHUT_RD = No more receptions; + SHUT_WR = No more transmissions; + SHUT_RDWR = No more receptions or transmissions. Returns 0 on success, -1 for errors. */ -int shutdown __P ((int __sockfd, int __how)); +extern int shutdown __P ((int __fd, int __how)); -/* belongs here or elsewhere? */ -int rcmd __P ((char **__ahost, unsigned short __inport, - __const char *__locuser, __const char *__remuser, - __const char *__cmd, int *__fd2p)); -int rresvport __P ((int *__port)); -int ruserok __P ((__const char *__rhost, int __superuser, - __const char *__ruser, __const char *__luser)); -int rexec __P ((char **__ahost, int __inport, __const char *__user, - __const char *__passwd, __const char *__cmd, - int *__fd2p)); +/* 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 */ +#endif /* sys/socket.h */ |