1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 1997 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28*0Sstevel@tonic-gate /* All Rights Reserved */ 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate /* 31*0Sstevel@tonic-gate * University Copyright- Copyright (c) 1982, 1986, 1988 32*0Sstevel@tonic-gate * The Regents of the University of California 33*0Sstevel@tonic-gate * All Rights Reserved 34*0Sstevel@tonic-gate * 35*0Sstevel@tonic-gate * University Acknowledgment- Portions of this document are derived from 36*0Sstevel@tonic-gate * software developed by the University of California, Berkeley, and its 37*0Sstevel@tonic-gate * contributors. 38*0Sstevel@tonic-gate */ 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate #include <sys/types.h> 43*0Sstevel@tonic-gate #include <sys/socket.h> 44*0Sstevel@tonic-gate #include <sys/stropts.h> 45*0Sstevel@tonic-gate #include <sys/stream.h> 46*0Sstevel@tonic-gate #include <sys/socketvar.h> 47*0Sstevel@tonic-gate #include <errno.h> 48*0Sstevel@tonic-gate #include <unistd.h> 49*0Sstevel@tonic-gate #include <stdlib.h> 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate extern int _socket_create(int, int, int, int); 52*0Sstevel@tonic-gate extern int _so_socketpair(int*); 53*0Sstevel@tonic-gate 54*0Sstevel@tonic-gate int _socketpair_create(int, int, int, int*, int); 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate #pragma weak socketpair = _socketpair 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate int 59*0Sstevel@tonic-gate _socketpair(int family, int type, int protocol, int sv[2]) 60*0Sstevel@tonic-gate { 61*0Sstevel@tonic-gate return (_socketpair_create(family, type, protocol, sv, SOV_DEFAULT)); 62*0Sstevel@tonic-gate } 63*0Sstevel@tonic-gate 64*0Sstevel@tonic-gate /* 65*0Sstevel@tonic-gate * Used by the BCP library. 66*0Sstevel@tonic-gate */ 67*0Sstevel@tonic-gate int 68*0Sstevel@tonic-gate _socketpair_bsd(int family, int type, int protocol, int sv[2]) 69*0Sstevel@tonic-gate { 70*0Sstevel@tonic-gate return (_socketpair_create(family, type, protocol, sv, SOV_SOCKBSD)); 71*0Sstevel@tonic-gate } 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate int 74*0Sstevel@tonic-gate _socketpair_svr4(int family, int type, int protocol, int sv[2]) 75*0Sstevel@tonic-gate { 76*0Sstevel@tonic-gate return (_socketpair_create(family, type, protocol, sv, 77*0Sstevel@tonic-gate SOV_SOCKSTREAM)); 78*0Sstevel@tonic-gate } 79*0Sstevel@tonic-gate 80*0Sstevel@tonic-gate int 81*0Sstevel@tonic-gate __xnet_socketpair(int family, int type, int protocol, int sv[2]) 82*0Sstevel@tonic-gate { 83*0Sstevel@tonic-gate return (_socketpair_create(family, type, protocol, sv, 84*0Sstevel@tonic-gate SOV_XPG4_2)); 85*0Sstevel@tonic-gate } 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate int 88*0Sstevel@tonic-gate _socketpair_create(int family, int type, int protocol, int sv[2], int version) 89*0Sstevel@tonic-gate { 90*0Sstevel@tonic-gate int res; 91*0Sstevel@tonic-gate int fd1, fd2; 92*0Sstevel@tonic-gate 93*0Sstevel@tonic-gate /* 94*0Sstevel@tonic-gate * Create the two sockets and pass them to _so_socketpair, which 95*0Sstevel@tonic-gate * will connect them together. 96*0Sstevel@tonic-gate */ 97*0Sstevel@tonic-gate fd1 = _socket_create(family, type, protocol, version); 98*0Sstevel@tonic-gate if (fd1 < 0) 99*0Sstevel@tonic-gate return (-1); 100*0Sstevel@tonic-gate fd2 = _socket_create(family, type, protocol, version); 101*0Sstevel@tonic-gate if (fd2 < 0) { 102*0Sstevel@tonic-gate int error = errno; 103*0Sstevel@tonic-gate 104*0Sstevel@tonic-gate (void) close(fd1); 105*0Sstevel@tonic-gate errno = error; 106*0Sstevel@tonic-gate return (-1); 107*0Sstevel@tonic-gate } 108*0Sstevel@tonic-gate sv[0] = fd1; 109*0Sstevel@tonic-gate sv[1] = fd2; 110*0Sstevel@tonic-gate res = _so_socketpair(sv); 111*0Sstevel@tonic-gate if (res < 0) { 112*0Sstevel@tonic-gate int error = errno; 113*0Sstevel@tonic-gate 114*0Sstevel@tonic-gate (void) close(fd1); 115*0Sstevel@tonic-gate (void) close(fd2); 116*0Sstevel@tonic-gate errno = error; 117*0Sstevel@tonic-gate return (-1); 118*0Sstevel@tonic-gate } 119*0Sstevel@tonic-gate /* 120*0Sstevel@tonic-gate * Check if kernel returned different fds in which case we close 121*0Sstevel@tonic-gate * the original ones. This is the case for SOCK_STREAM where 122*0Sstevel@tonic-gate * one of the original sockets is used as a listener and 123*0Sstevel@tonic-gate * _so_socketpair passes out the newly accepted socket. 124*0Sstevel@tonic-gate */ 125*0Sstevel@tonic-gate if (sv[0] != fd1) 126*0Sstevel@tonic-gate (void) close(fd1); 127*0Sstevel@tonic-gate if (sv[1] != fd2) 128*0Sstevel@tonic-gate (void) close(fd2); 129*0Sstevel@tonic-gate return (res); 130*0Sstevel@tonic-gate } 131