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" /* SVr4.0 1.5 */ 32 33 #include "mt.h" 34 #include <stdlib.h> 35 #include <string.h> 36 #include <strings.h> 37 #include <unistd.h> 38 #include <errno.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 <sys/stat.h> 45 #include <xti.h> 46 #include <fcntl.h> 47 #include <signal.h> 48 #include <assert.h> 49 #include <syslog.h> 50 #include <limits.h> 51 #include "tx.h" 52 53 int 54 _tx_getinfo(int fd, struct t_info *info, int api_semantics) 55 { 56 struct T_info_req *inforeqp; 57 struct T_info_ack *infoackp; 58 int retlen; 59 struct _ti_user *tiptr; 60 int retval, sv_errno, didalloc; 61 struct strbuf ctlbuf; 62 63 if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == 0) 64 return (-1); 65 sig_mutex_lock(&tiptr->ti_lock); 66 67 /* 68 * Acquire buffer for use in sending/receiving the message. 69 * Note: assumes (correctly) that ti_ctlsize is large enough 70 * to hold sizeof (struct T_info_req/ack) 71 */ 72 if (_t_acquire_ctlbuf(tiptr, &ctlbuf, &didalloc) < 0) { 73 sv_errno = errno; 74 sig_mutex_unlock(&tiptr->ti_lock); 75 errno = sv_errno; 76 return (-1); 77 } 78 79 /* LINTED pointer cast */ 80 inforeqp = (struct T_info_req *)ctlbuf.buf; 81 inforeqp->PRIM_type = T_INFO_REQ; 82 83 do { 84 retval = _t_do_ioctl(fd, ctlbuf.buf, 85 (int)sizeof (struct T_info_req), TI_GETINFO, &retlen); 86 } while (retval < 0 && errno == EINTR); 87 88 if (retval < 0) 89 goto err_out; 90 91 if (retlen != (int)sizeof (struct T_info_ack)) { 92 t_errno = TSYSERR; 93 errno = EIO; 94 goto err_out; 95 } 96 97 /* LINTED pointer cast */ 98 infoackp = (struct T_info_ack *)ctlbuf.buf; 99 100 info->addr = infoackp->ADDR_size; 101 info->options = infoackp->OPT_size; 102 info->tsdu = infoackp->TSDU_size; 103 info->etsdu = infoackp->ETSDU_size; 104 info->connect = infoackp->CDATA_size; 105 info->discon = infoackp->DDATA_size; 106 info->servtype = infoackp->SERV_type; 107 108 if (_T_IS_XTI(api_semantics)) { 109 /* XTI ONLY - TLI t_info struct does not have "flags" */ 110 info->flags = 0; 111 if (infoackp->PROVIDER_flag & (SENDZERO|OLD_SENDZERO)) 112 info->flags |= T_SENDZERO; 113 } 114 if (didalloc) 115 free(ctlbuf.buf); 116 else 117 tiptr->ti_ctlbuf = ctlbuf.buf; 118 sig_mutex_unlock(&tiptr->ti_lock); 119 return (0); 120 121 err_out: 122 sv_errno = errno; 123 if (didalloc) 124 free(ctlbuf.buf); 125 else 126 tiptr->ti_ctlbuf = ctlbuf.buf; 127 sig_mutex_unlock(&tiptr->ti_lock); 128 errno = sv_errno; 129 return (-1); 130 } 131