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 2004 Sun Microsystems, Inc. All rights reserved. 28 * Use is subject to license terms. 29 */ 30 31 32 #pragma ident "%Z%%M% %I% %E% SMI" 33 /* SVr4.0 1.1.1.1 */ 34 35 #include <stdlib.h> 36 #include "mt.h" 37 #include <errno.h> 38 #include <rpc/trace.h> 39 #include <unistd.h> 40 #include <string.h> 41 #include <stropts.h> 42 #include <sys/stream.h> 43 #include <xti.h> 44 #define _SUN_TPI_VERSION 2 45 #include <sys/tihdr.h> 46 #include <sys/timod.h> 47 #include <assert.h> 48 #include <signal.h> 49 #include "tx.h" 50 51 static int __tx_tlitpi_getprotaddr_locked(struct _ti_user *tiptr, 52 struct t_bind *boundaddr, struct t_bind *peer); 53 54 55 static int __tx_getname_locked(int fd, struct netbuf *name, int type); 56 57 int 58 _tx_getname(int fd, struct netbuf *name, int type, int api_semantics) 59 { 60 struct _ti_user *tiptr; 61 int retval, sv_errno; 62 63 trace3(TR_t_getname, 0, fd, type); 64 assert(_T_IS_TLI(api_semantics)); /* TLI only interface */ 65 if (!name || ((type != LOCALNAME) && (type != REMOTENAME))) { 66 trace3(TR_t_getname, 1, fd, type); 67 errno = EINVAL; 68 return (-1); 69 } 70 71 if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == 0) { 72 sv_errno = errno; 73 trace3(TR_t_getname, 1, fd, type); 74 errno = sv_errno; 75 return (-1); 76 } 77 sig_mutex_lock(&tiptr->ti_lock); 78 79 retval = __tx_getname_locked(fd, name, type); 80 81 if (retval < 0) { 82 sv_errno = errno; 83 sig_mutex_unlock(&tiptr->ti_lock); 84 trace3(TR_t_getname, 1, fd, type); 85 errno = sv_errno; 86 return (-1); 87 } 88 89 sig_mutex_unlock(&tiptr->ti_lock); 90 91 trace3(TR_t_getname, 1, fd, type); 92 return (0); 93 } 94 95 96 static int 97 __tx_getname_locked(int fd, struct netbuf *name, int type) 98 { 99 int retval; 100 101 do { 102 retval = _ioctl(fd, 103 (type == LOCALNAME) ? TI_GETMYNAME : TI_GETPEERNAME, name); 104 } while (retval < 0 && errno == EINTR); 105 106 if (retval < 0) { 107 t_errno = TSYSERR; 108 return (-1); 109 } 110 return (0); 111 } 112 113 114 115 int 116 _tx_getprotaddr( 117 int fd, 118 struct t_bind *boundaddr, 119 struct t_bind *peeraddr, 120 int api_semantics) 121 { 122 struct _ti_user *tiptr; 123 int retval, sv_errno; 124 struct T_addr_req *addreqp; 125 struct T_addr_ack *addrackp; 126 int didalloc; 127 struct strbuf ctlbuf; 128 int retlen; 129 130 trace2(TR_t_getprotaddr, 0, fd); 131 132 if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == 0) { 133 sv_errno = errno; 134 trace2(TR_t_getprotaddr, 1, fd); 135 errno = sv_errno; 136 return (-1); 137 } 138 139 sig_mutex_lock(&tiptr->ti_lock); 140 141 if ((tiptr->ti_prov_flag & XPG4_1) == 0) { 142 /* 143 * Provider does not support XTI inspired TPI so we 144 * try to do operation assuming TLI inspired TPI 145 */ 146 retval = __tx_tlitpi_getprotaddr_locked(tiptr, boundaddr, 147 peeraddr); 148 sv_errno = errno; 149 sig_mutex_unlock(&tiptr->ti_lock); 150 errno = sv_errno; 151 return (retval); 152 } 153 154 /* 155 * Acquire buffer for use in sending/receiving the message. 156 * Note: assumes (correctly) that ti_ctlsize is large enough 157 * to hold sizeof (struct T_addr_req/ack) 158 */ 159 if (_t_acquire_ctlbuf(tiptr, &ctlbuf, &didalloc) < 0) { 160 sv_errno = errno; 161 sig_mutex_unlock(&tiptr->ti_lock); 162 trace2(TR_t_bind, 1, fd); 163 errno = sv_errno; 164 return (-1); 165 } 166 167 addreqp = (struct T_addr_req *)ctlbuf.buf; 168 addreqp->PRIM_type = T_ADDR_REQ; 169 170 do { 171 retval = _t_do_ioctl(fd, ctlbuf.buf, 172 (int)sizeof (struct T_addr_req), TI_GETADDRS, &retlen); 173 } while (retval < 0 && errno == EINTR); 174 175 /* retval can now be either 0 or -1 */ 176 if (retval < 0) { 177 sv_errno = errno; 178 sig_mutex_unlock(&tiptr->ti_lock); 179 trace2(TR_t_getprotaddr, 1, fd); 180 errno = sv_errno; 181 goto err_out; 182 } 183 sig_mutex_unlock(&tiptr->ti_lock); 184 185 if (retlen < (int)sizeof (struct T_addr_ack)) { 186 t_errno = TSYSERR; 187 trace2(TR_t_getprotaddr, 1, fd); 188 errno = EIO; 189 retval = -1; 190 goto err_out; 191 } 192 193 addrackp = (struct T_addr_ack *)ctlbuf.buf; 194 195 /* 196 * We assume null parameters are OK and not errors 197 */ 198 if (boundaddr != NULL && boundaddr->addr.maxlen > 0) { 199 if (TLEN_GT_NLEN(addrackp->LOCADDR_length, 200 boundaddr->addr.maxlen)) { 201 t_errno = TBUFOVFLW; 202 trace2(TR_t_getprotaddr, 1, fd); 203 retval = -1; 204 goto err_out; 205 } 206 boundaddr->addr.len = addrackp->LOCADDR_length; 207 memcpy(boundaddr->addr.buf, 208 ctlbuf.buf + addrackp->LOCADDR_offset, 209 (size_t)addrackp->LOCADDR_length); 210 } 211 212 /* 213 * Note: In states where there is no remote end of the connection 214 * the T_ADDR_REQ primitive does not return a remote address. However, 215 * in protcols such as TCP, the transport connection is established 216 * before the TLI/XTI level association is established. Therefore, 217 * in state T_OUTCON, the transport may return a remote address where 218 * TLI/XTI level thinks there is no remote end and therefore 219 * no remote address should be returned. We therefore do not look at 220 * address returned by transport provider in T_OUTCON state. 221 * Tested by XTI test suite. 222 */ 223 if (tiptr->ti_state != T_OUTCON && 224 peeraddr != NULL && peeraddr->addr.maxlen > 0) { 225 if (TLEN_GT_NLEN(addrackp->REMADDR_length, 226 peeraddr->addr.maxlen)) { 227 t_errno = TBUFOVFLW; 228 trace2(TR_t_getprotaddr, 1, fd); 229 retval = -1; 230 goto err_out; 231 } 232 peeraddr->addr.len = addrackp->REMADDR_length; 233 memcpy(peeraddr->addr.buf, 234 ctlbuf.buf + addrackp->REMADDR_offset, 235 (size_t)addrackp->REMADDR_length); 236 } 237 238 trace2(TR_t_getprotaddr, 1, fd); 239 240 err_out: 241 if (didalloc) 242 free(ctlbuf.buf); 243 else 244 tiptr->ti_ctlbuf = ctlbuf.buf; 245 return (retval); 246 } 247 248 static int 249 __tx_tlitpi_getprotaddr_locked( 250 struct _ti_user *tiptr, 251 struct t_bind *boundaddr, 252 struct t_bind *peeraddr) 253 { 254 if (boundaddr) { 255 boundaddr->addr.len = 0; 256 if (tiptr->ti_state >= TS_IDLE) { 257 /* 258 * assume bound endpoint . 259 * Note: TI_GETMYNAME can return 260 * a finite length all zeroes address for unbound 261 * endpoint so we avoid relying on it for bound 262 * endpoints for XTI t_getprotaddr() semantics. 263 */ 264 if (__tx_getname_locked(tiptr->ti_fd, &boundaddr->addr, 265 LOCALNAME) < 0) 266 return (-1); 267 268 } 269 } 270 if (peeraddr) { 271 272 peeraddr->addr.len = 0; 273 274 if (tiptr->ti_state >= TS_DATA_XFER) { 275 /* 276 * assume connected endpoint. 277 * The TI_GETPEERNAME call can fail with error 278 * if endpoint is not connected so we don't call it 279 * for XTI t_getprotaddr() semantics 280 */ 281 if (__tx_getname_locked(tiptr->ti_fd, &peeraddr->addr, 282 REMOTENAME) < 0) 283 return (-1); 284 } 285 } 286 return (0); 287 } 288