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 _so_socket(); 52*0Sstevel@tonic-gate extern int _s_netconfig_path(); 53*0Sstevel@tonic-gate extern int _setsockopt(); 54*0Sstevel@tonic-gate 55*0Sstevel@tonic-gate int _socket_create(int, int, int, int); 56*0Sstevel@tonic-gate 57*0Sstevel@tonic-gate #pragma weak socket = _socket 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate int 60*0Sstevel@tonic-gate _socket(int family, int type, int protocol) 61*0Sstevel@tonic-gate { 62*0Sstevel@tonic-gate return (_socket_create(family, type, protocol, SOV_DEFAULT)); 63*0Sstevel@tonic-gate } 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate /* 66*0Sstevel@tonic-gate * Used by the BCP library. 67*0Sstevel@tonic-gate */ 68*0Sstevel@tonic-gate int 69*0Sstevel@tonic-gate _socket_bsd(int family, int type, int protocol) 70*0Sstevel@tonic-gate { 71*0Sstevel@tonic-gate return (_socket_create(family, type, protocol, SOV_SOCKBSD)); 72*0Sstevel@tonic-gate } 73*0Sstevel@tonic-gate 74*0Sstevel@tonic-gate int 75*0Sstevel@tonic-gate _socket_svr4(int family, int type, int protocol) 76*0Sstevel@tonic-gate { 77*0Sstevel@tonic-gate return (_socket_create(family, type, protocol, SOV_SOCKSTREAM)); 78*0Sstevel@tonic-gate } 79*0Sstevel@tonic-gate 80*0Sstevel@tonic-gate int 81*0Sstevel@tonic-gate __xnet_socket(int family, int type, int protocol) 82*0Sstevel@tonic-gate { 83*0Sstevel@tonic-gate return (_socket_create(family, type, protocol, SOV_XPG4_2)); 84*0Sstevel@tonic-gate } 85*0Sstevel@tonic-gate 86*0Sstevel@tonic-gate /* 87*0Sstevel@tonic-gate * Create a socket endpoint for socket() and socketpair(). 88*0Sstevel@tonic-gate * In SunOS 4.X and in SunOS 5.X prior to XPG 4.2 the only error 89*0Sstevel@tonic-gate * that could be returned due to invalid <family, type, protocol> 90*0Sstevel@tonic-gate * was EPROTONOSUPPORT. (While the SunOS 4.X source contains EPROTOTYPE 91*0Sstevel@tonic-gate * error as well that error can only be generated if the kernel is 92*0Sstevel@tonic-gate * incorrectly configured.) 93*0Sstevel@tonic-gate * For backwards compatibility only applications that request XPG 4.2 94*0Sstevel@tonic-gate * (through c89 or XOPEN_SOURCE) will get EPROTOTYPE or EAFNOSUPPORT errors. 95*0Sstevel@tonic-gate */ 96*0Sstevel@tonic-gate int 97*0Sstevel@tonic-gate _socket_create(int family, int type, int protocol, int version) 98*0Sstevel@tonic-gate { 99*0Sstevel@tonic-gate int fd; 100*0Sstevel@tonic-gate 101*0Sstevel@tonic-gate /* 102*0Sstevel@tonic-gate * Try creating without knowing the device assuming that 103*0Sstevel@tonic-gate * the transport provider is registered in /etc/sock2path. 104*0Sstevel@tonic-gate * If none found fall back to using /etc/netconfig to look 105*0Sstevel@tonic-gate * up the name of the transport device name. This provides 106*0Sstevel@tonic-gate * backwards compatibility for transport providers that have not 107*0Sstevel@tonic-gate * yet been converted to using /etc/sock2path. 108*0Sstevel@tonic-gate * XXX When all transport providers use /etc/sock2path this 109*0Sstevel@tonic-gate * part of the code can be removed. 110*0Sstevel@tonic-gate */ 111*0Sstevel@tonic-gate fd = _so_socket(family, type, protocol, NULL, version); 112*0Sstevel@tonic-gate if (fd == -1) { 113*0Sstevel@tonic-gate char *devpath; 114*0Sstevel@tonic-gate int saved_errno = errno; 115*0Sstevel@tonic-gate int prototype = 0; 116*0Sstevel@tonic-gate 117*0Sstevel@tonic-gate switch (saved_errno) { 118*0Sstevel@tonic-gate case EAFNOSUPPORT: 119*0Sstevel@tonic-gate case EPROTOTYPE: 120*0Sstevel@tonic-gate if (version != SOV_XPG4_2) 121*0Sstevel@tonic-gate saved_errno = EPROTONOSUPPORT; 122*0Sstevel@tonic-gate break; 123*0Sstevel@tonic-gate case EPROTONOSUPPORT: 124*0Sstevel@tonic-gate break; 125*0Sstevel@tonic-gate 126*0Sstevel@tonic-gate default: 127*0Sstevel@tonic-gate errno = saved_errno; 128*0Sstevel@tonic-gate return (-1); 129*0Sstevel@tonic-gate } 130*0Sstevel@tonic-gate if (_s_netconfig_path(family, type, protocol, 131*0Sstevel@tonic-gate &devpath, &prototype) == -1) { 132*0Sstevel@tonic-gate errno = saved_errno; 133*0Sstevel@tonic-gate return (-1); 134*0Sstevel@tonic-gate } 135*0Sstevel@tonic-gate fd = _so_socket(family, type, protocol, devpath, version); 136*0Sstevel@tonic-gate free(devpath); 137*0Sstevel@tonic-gate if (fd == -1) { 138*0Sstevel@tonic-gate errno = saved_errno; 139*0Sstevel@tonic-gate return (-1); 140*0Sstevel@tonic-gate } 141*0Sstevel@tonic-gate if (prototype != 0) { 142*0Sstevel@tonic-gate if (_setsockopt(fd, SOL_SOCKET, SO_PROTOTYPE, 143*0Sstevel@tonic-gate (caddr_t)&prototype, (int)sizeof (prototype)) < 0) { 144*0Sstevel@tonic-gate (void) close(fd); 145*0Sstevel@tonic-gate /* 146*0Sstevel@tonic-gate * setsockopt often fails with ENOPROTOOPT 147*0Sstevel@tonic-gate * but socket() should fail with 148*0Sstevel@tonic-gate * EPROTONOSUPPORT. 149*0Sstevel@tonic-gate */ 150*0Sstevel@tonic-gate errno = EPROTONOSUPPORT; 151*0Sstevel@tonic-gate return (-1); 152*0Sstevel@tonic-gate } 153*0Sstevel@tonic-gate } 154*0Sstevel@tonic-gate } 155*0Sstevel@tonic-gate return (fd); 156*0Sstevel@tonic-gate } 157