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 23 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 24 /* All Rights Reserved */ 25 26 /* 27 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 28 * Use is subject to license terms. 29 */ 30 31 #pragma ident "%Z%%M% %I% %E% SMI" 32 33 #include <stdlib.h> 34 #include "mt.h" 35 #include <errno.h> 36 #include <unistd.h> 37 #include <string.h> 38 #include <stropts.h> 39 #include <sys/stream.h> 40 #include <xti.h> 41 #define _SUN_TPI_VERSION 2 42 #include <sys/tihdr.h> 43 #include <sys/timod.h> 44 #include <assert.h> 45 #include <signal.h> 46 #include "tx.h" 47 48 static int __tx_tlitpi_getprotaddr_locked(struct _ti_user *tiptr, 49 struct t_bind *boundaddr, struct t_bind *peer); 50 51 52 static int __tx_getname_locked(int fd, struct netbuf *name, int type); 53 54 int 55 _tx_getname(int fd, struct netbuf *name, int type, int api_semantics) 56 { 57 struct _ti_user *tiptr; 58 int retval, sv_errno; 59 60 assert(_T_IS_TLI(api_semantics)); /* TLI only interface */ 61 if (!name || ((type != LOCALNAME) && (type != REMOTENAME))) { 62 errno = EINVAL; 63 return (-1); 64 } 65 66 if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == 0) 67 return (-1); 68 sig_mutex_lock(&tiptr->ti_lock); 69 70 retval = __tx_getname_locked(fd, name, type); 71 72 if (retval < 0) { 73 sv_errno = errno; 74 sig_mutex_unlock(&tiptr->ti_lock); 75 errno = sv_errno; 76 return (-1); 77 } 78 79 sig_mutex_unlock(&tiptr->ti_lock); 80 81 return (0); 82 } 83 84 85 static int 86 __tx_getname_locked(int fd, struct netbuf *name, int type) 87 { 88 int retval; 89 90 do { 91 retval = _ioctl(fd, 92 (type == LOCALNAME) ? TI_GETMYNAME : TI_GETPEERNAME, name); 93 } while (retval < 0 && errno == EINTR); 94 95 if (retval < 0) { 96 t_errno = TSYSERR; 97 return (-1); 98 } 99 return (0); 100 } 101 102 103 104 int 105 _tx_getprotaddr( 106 int fd, 107 struct t_bind *boundaddr, 108 struct t_bind *peeraddr, 109 int api_semantics) 110 { 111 struct _ti_user *tiptr; 112 int retval, sv_errno; 113 struct T_addr_req *addreqp; 114 struct T_addr_ack *addrackp; 115 int didalloc; 116 struct strbuf ctlbuf; 117 int retlen; 118 119 if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == 0) 120 return (-1); 121 122 sig_mutex_lock(&tiptr->ti_lock); 123 124 if ((tiptr->ti_prov_flag & XPG4_1) == 0) { 125 /* 126 * Provider does not support XTI inspired TPI so we 127 * try to do operation assuming TLI inspired TPI 128 */ 129 retval = __tx_tlitpi_getprotaddr_locked(tiptr, boundaddr, 130 peeraddr); 131 sv_errno = errno; 132 sig_mutex_unlock(&tiptr->ti_lock); 133 errno = sv_errno; 134 return (retval); 135 } 136 137 /* 138 * Acquire buffer for use in sending/receiving the message. 139 * Note: assumes (correctly) that ti_ctlsize is large enough 140 * to hold sizeof (struct T_addr_req/ack) 141 */ 142 if (_t_acquire_ctlbuf(tiptr, &ctlbuf, &didalloc) < 0) { 143 sv_errno = errno; 144 sig_mutex_unlock(&tiptr->ti_lock); 145 errno = sv_errno; 146 return (-1); 147 } 148 149 /* LINTED pointer cast */ 150 addreqp = (struct T_addr_req *)ctlbuf.buf; 151 addreqp->PRIM_type = T_ADDR_REQ; 152 153 do { 154 retval = _t_do_ioctl(fd, ctlbuf.buf, 155 (int)sizeof (struct T_addr_req), TI_GETADDRS, &retlen); 156 } while (retval < 0 && errno == EINTR); 157 158 /* retval can now be either 0 or -1 */ 159 if (retval < 0) { 160 sv_errno = errno; 161 sig_mutex_unlock(&tiptr->ti_lock); 162 errno = sv_errno; 163 goto err_out; 164 } 165 sig_mutex_unlock(&tiptr->ti_lock); 166 167 if (retlen < (int)sizeof (struct T_addr_ack)) { 168 t_errno = TSYSERR; 169 errno = EIO; 170 retval = -1; 171 goto err_out; 172 } 173 174 /* LINTED pointer cast */ 175 addrackp = (struct T_addr_ack *)ctlbuf.buf; 176 177 /* 178 * We assume null parameters are OK and not errors 179 */ 180 if (boundaddr != NULL && boundaddr->addr.maxlen > 0) { 181 if (TLEN_GT_NLEN(addrackp->LOCADDR_length, 182 boundaddr->addr.maxlen)) { 183 t_errno = TBUFOVFLW; 184 retval = -1; 185 goto err_out; 186 } 187 boundaddr->addr.len = addrackp->LOCADDR_length; 188 (void) memcpy(boundaddr->addr.buf, 189 ctlbuf.buf + addrackp->LOCADDR_offset, 190 (size_t)addrackp->LOCADDR_length); 191 } 192 193 /* 194 * Note: In states where there is no remote end of the connection 195 * the T_ADDR_REQ primitive does not return a remote address. However, 196 * in protcols such as TCP, the transport connection is established 197 * before the TLI/XTI level association is established. Therefore, 198 * in state T_OUTCON, the transport may return a remote address where 199 * TLI/XTI level thinks there is no remote end and therefore 200 * no remote address should be returned. We therefore do not look at 201 * address returned by transport provider in T_OUTCON state. 202 * Tested by XTI test suite. 203 */ 204 if (tiptr->ti_state != T_OUTCON && 205 peeraddr != NULL && peeraddr->addr.maxlen > 0) { 206 if (TLEN_GT_NLEN(addrackp->REMADDR_length, 207 peeraddr->addr.maxlen)) { 208 t_errno = TBUFOVFLW; 209 retval = -1; 210 goto err_out; 211 } 212 peeraddr->addr.len = addrackp->REMADDR_length; 213 (void) memcpy(peeraddr->addr.buf, 214 ctlbuf.buf + addrackp->REMADDR_offset, 215 (size_t)addrackp->REMADDR_length); 216 } 217 218 err_out: 219 if (didalloc) 220 free(ctlbuf.buf); 221 else 222 tiptr->ti_ctlbuf = ctlbuf.buf; 223 return (retval); 224 } 225 226 static int 227 __tx_tlitpi_getprotaddr_locked( 228 struct _ti_user *tiptr, 229 struct t_bind *boundaddr, 230 struct t_bind *peeraddr) 231 { 232 if (boundaddr) { 233 boundaddr->addr.len = 0; 234 if (tiptr->ti_state >= TS_IDLE) { 235 /* 236 * assume bound endpoint . 237 * Note: TI_GETMYNAME can return 238 * a finite length all zeroes address for unbound 239 * endpoint so we avoid relying on it for bound 240 * endpoints for XTI t_getprotaddr() semantics. 241 */ 242 if (__tx_getname_locked(tiptr->ti_fd, &boundaddr->addr, 243 LOCALNAME) < 0) 244 return (-1); 245 246 } 247 } 248 if (peeraddr) { 249 250 peeraddr->addr.len = 0; 251 252 if (tiptr->ti_state >= TS_DATA_XFER) { 253 /* 254 * assume connected endpoint. 255 * The TI_GETPEERNAME call can fail with error 256 * if endpoint is not connected so we don't call it 257 * for XTI t_getprotaddr() semantics 258 */ 259 if (__tx_getname_locked(tiptr->ti_fd, &peeraddr->addr, 260 REMOTENAME) < 0) 261 return (-1); 262 } 263 } 264 return (0); 265 } 266