1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 23 /* All Rights Reserved */ 24 25 26 /* 27 * Copyright 1993-2003 Sun Microsystems, Inc. All rights reserved. 28 * Use is subject to license terms. 29 */ 30 31 32 #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.3.4.1 */ 33 34 #include "mt.h" 35 #include <stdlib.h> 36 #include <rpc/trace.h> 37 #include <errno.h> 38 #include <string.h> 39 #include <stropts.h> 40 #include <sys/stream.h> 41 #define _SUN_TPI_VERSION 2 42 #include <sys/tihdr.h> 43 #include <sys/timod.h> 44 #include <xti.h> 45 #include <signal.h> 46 #include <syslog.h> 47 #include "tx.h" 48 49 int 50 _tx_bind( 51 int fd, 52 const struct t_bind *req, 53 struct t_bind *ret, 54 int api_semantics 55 ) 56 { 57 struct T_bind_req *bind_reqp; 58 struct T_bind_ack *bind_ackp; 59 int size, sv_errno, retlen; 60 struct _ti_user *tiptr; 61 sigset_t mask; 62 63 int didalloc; 64 int use_xpg41tpi; 65 struct strbuf ctlbuf; 66 67 trace2(TR_t_bind, 0, fd); 68 if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == NULL) { 69 sv_errno = errno; 70 trace2(TR_t_bind, 1, fd); 71 errno = sv_errno; 72 return (-1); 73 } 74 75 /* 76 * We block all signals since TI_BIND, which sends a TPI message 77 * O_T_BIND_REQ down, is not an idempotetent operation 78 * Note that sig_mutex_lock() only defers signals, it does not 79 * block them, so interruptible syscalls could still get EINTR. 80 */ 81 (void) thr_sigsetmask(SIG_SETMASK, &fillset, &mask); 82 sig_mutex_lock(&tiptr->ti_lock); 83 if (_T_IS_XTI(api_semantics)) { 84 /* 85 * User level state verification only done for XTI 86 * because doing for TLI may break existing applications 87 */ 88 if (tiptr->ti_state != T_UNBND) { 89 t_errno = TOUTSTATE; 90 sig_mutex_unlock(&tiptr->ti_lock); 91 (void) thr_sigsetmask(SIG_SETMASK, &mask, NULL); 92 trace2(TR_t_bind, 1, fd); 93 return (-1); 94 } 95 } 96 /* 97 * Acquire buffer for use in sending/receiving the message. 98 * Note: assumes (correctly) that ti_ctlsize is large enough 99 * to hold sizeof (struct T_bind_req/ack) 100 */ 101 if (_t_acquire_ctlbuf(tiptr, &ctlbuf, &didalloc) < 0) { 102 sv_errno = errno; 103 sig_mutex_unlock(&tiptr->ti_lock); 104 (void) thr_sigsetmask(SIG_SETMASK, &mask, NULL); 105 trace2(TR_t_bind, 1, fd); 106 errno = sv_errno; 107 return (-1); 108 } 109 110 bind_reqp = (struct T_bind_req *)ctlbuf.buf; 111 size = (int)sizeof (struct T_bind_req); 112 113 use_xpg41tpi = (_T_IS_XTI(api_semantics)) && 114 ((tiptr->ti_prov_flag & XPG4_1) != 0); 115 if (use_xpg41tpi) 116 /* XTI call and provider knows the XTI inspired TPI */ 117 bind_reqp->PRIM_type = T_BIND_REQ; 118 else 119 /* TLI caller old TPI provider */ 120 bind_reqp->PRIM_type = O_T_BIND_REQ; 121 122 bind_reqp->ADDR_length = (req == NULL? 0: req->addr.len); 123 bind_reqp->ADDR_offset = 0; 124 bind_reqp->CONIND_number = (req == NULL? 0: req->qlen); 125 126 127 if (bind_reqp->ADDR_length) { 128 if (_t_aligned_copy(&ctlbuf, (int)bind_reqp->ADDR_length, size, 129 req->addr.buf, &bind_reqp->ADDR_offset) < 0) { 130 /* 131 * Aligned copy will overflow buffer allocated based 132 * on transport maximum address length. 133 * return error. 134 */ 135 t_errno = TBADADDR; 136 goto err_out; 137 } 138 size = bind_reqp->ADDR_offset + bind_reqp->ADDR_length; 139 } 140 141 if (_t_do_ioctl(fd, ctlbuf.buf, size, TI_BIND, &retlen) < 0) { 142 goto err_out; 143 } 144 145 if (retlen < (int)sizeof (struct T_bind_ack)) { 146 t_errno = TSYSERR; 147 errno = EIO; 148 goto err_out; 149 } 150 151 bind_ackp = (struct T_bind_ack *)ctlbuf.buf; 152 153 if ((req != NULL) && req->addr.len != 0 && 154 (use_xpg41tpi == 0) && (_T_IS_XTI(api_semantics))) { 155 /* 156 * Best effort to do XTI on old TPI. 157 * 158 * Match address requested or unbind and fail with 159 * TADDRBUSY. 160 * 161 * XXX - Hack alert ! Should we do this at all ? 162 * Not "supported" as may not work if encoding of 163 * address is different in the returned address. This 164 * will also have trouble with TCP/UDP wildcard port 165 * requests 166 */ 167 if ((req->addr.len != bind_ackp->ADDR_length) || 168 (memcmp(req->addr.buf, ctlbuf.buf + 169 bind_ackp->ADDR_offset, req->addr.len) != 0)) { 170 (void) _tx_unbind_locked(fd, tiptr, &ctlbuf); 171 t_errno = TADDRBUSY; 172 goto err_out; 173 } 174 } 175 176 tiptr->ti_ocnt = 0; 177 tiptr->ti_flags &= ~TX_TQFULL_NOTIFIED; 178 179 _T_TX_NEXTSTATE(T_BIND, tiptr, "t_bind: invalid state event T_BIND"); 180 181 if (ret != NULL) { 182 if (_T_IS_TLI(api_semantics) || ret->addr.maxlen > 0) { 183 if (TLEN_GT_NLEN(bind_reqp->ADDR_length, 184 ret->addr.maxlen)) { 185 t_errno = TBUFOVFLW; 186 goto err_out; 187 } 188 (void) memcpy(ret->addr.buf, 189 ctlbuf.buf + bind_ackp->ADDR_offset, 190 (size_t)bind_ackp->ADDR_length); 191 ret->addr.len = bind_ackp->ADDR_length; 192 } 193 ret->qlen = bind_ackp->CONIND_number; 194 } 195 196 tiptr->ti_qlen = (uint_t)bind_ackp->CONIND_number; 197 198 if (didalloc) 199 free(ctlbuf.buf); 200 else 201 tiptr->ti_ctlbuf = ctlbuf.buf; 202 sig_mutex_unlock(&tiptr->ti_lock); 203 (void) thr_sigsetmask(SIG_SETMASK, &mask, NULL); 204 trace2(TR_t_bind, 1, fd); 205 return (0); 206 /* NOTREACHED */ 207 err_out: 208 sv_errno = errno; 209 if (didalloc) 210 free(ctlbuf.buf); 211 else 212 tiptr->ti_ctlbuf = ctlbuf.buf; 213 sig_mutex_unlock(&tiptr->ti_lock); 214 (void) thr_sigsetmask(SIG_SETMASK, &mask, NULL); 215 trace2(TR_t_bind, 1, fd); 216 errno = sv_errno; 217 return (-1); 218 } 219