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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1990, 2010, Oracle and/or its affiliates. All rights reserved.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* University Copyright- Copyright (c) 1982, 1986, 1988
* The Regents of the University of California
* All Rights Reserved
*
* University Acknowledgment- Portions of this document are derived from
* software developed by the University of California, Berkeley, and its
* contributors.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stropts.h>
#include <sys/stream.h>
#include <sys/socketvar.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
extern int _so_socket();
extern int _s_netconfig_path();
extern int _setsockopt();
int _socket_create(int, int, int, int);
#pragma weak socket = _socket
int
_socket(int family, int type, int protocol)
{
return (_socket_create(family, type, protocol, SOV_DEFAULT));
}
/*
* Used by the BCP library.
*/
int
_socket_bsd(int family, int type, int protocol)
{
return (_socket_create(family, type, protocol, SOV_SOCKBSD));
}
int
_socket_svr4(int family, int type, int protocol)
{
return (_socket_create(family, type, protocol, SOV_SOCKSTREAM));
}
int
__xnet_socket(int family, int type, int protocol)
{
return (_socket_create(family, type, protocol, SOV_XPG4_2));
}
/*
* Create a socket endpoint for socket() and socketpair().
* In SunOS 4.X and in SunOS 5.X prior to XPG 4.2 the only error
* that could be returned due to invalid <family, type, protocol>
* was EPROTONOSUPPORT. (While the SunOS 4.X source contains EPROTOTYPE
* error as well that error can only be generated if the kernel is
* incorrectly configured.)
* For backwards compatibility only applications that request XPG 4.2
* (through c89 or XOPEN_SOURCE) will get EPROTOTYPE or EAFNOSUPPORT errors.
*/
int
_socket_create(int family, int type, int protocol, int version)
{
int fd;
/*
* Try creating without knowing the device assuming that
* the transport provider is registered in /etc/sock2path.d.
* If none found fall back to using /etc/netconfig to look
* up the name of the transport device name. This provides
* backwards compatibility for transport providers that have not
* yet been converted to using /etc/sock2path.d.
* XXX When all transport providers use /etc/sock2path.d. this
* part of the code can be removed.
*/
fd = _so_socket(family, type, protocol, NULL, version);
if (fd == -1) {
char *devpath;
int saved_errno = errno;
int prototype = 0;
switch (saved_errno) {
case EAFNOSUPPORT:
case EPROTOTYPE:
if (version != SOV_XPG4_2)
saved_errno = EPROTONOSUPPORT;
break;
case EPROTONOSUPPORT:
break;
default:
errno = saved_errno;
return (-1);
}
if (_s_netconfig_path(family, type, protocol,
&devpath, &prototype) == -1) {
errno = saved_errno;
return (-1);
}
fd = _so_socket(family, type, protocol, devpath, version);
free(devpath);
if (fd == -1) {
errno = saved_errno;
return (-1);
}
if (prototype != 0) {
if (_setsockopt(fd, SOL_SOCKET, SO_PROTOTYPE,
(caddr_t)&prototype, (int)sizeof (prototype)) < 0) {
(void) close(fd);
/*
* setsockopt often fails with ENOPROTOOPT
* but socket() should fail with
* EPROTONOSUPPORT.
*/
errno = EPROTONOSUPPORT;
return (-1);
}
}
}
return (fd);
}
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