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 #include "mt.h" 32 #include <stdlib.h> 33 #include <string.h> 34 #include <strings.h> 35 #include <unistd.h> 36 #include <errno.h> 37 #include <stropts.h> 38 #include <sys/stream.h> 39 #define _SUN_TPI_VERSION 2 40 #include <sys/tihdr.h> 41 #include <sys/timod.h> 42 #include <sys/stat.h> 43 #include <xti.h> 44 #include <fcntl.h> 45 #include <signal.h> 46 #include <assert.h> 47 #include <syslog.h> 48 #include <limits.h> 49 #include "tx.h" 50 51 int 52 _tx_getinfo(int fd, struct t_info *info, int api_semantics) 53 { 54 struct T_info_req *inforeqp; 55 struct T_info_ack *infoackp; 56 int retlen; 57 struct _ti_user *tiptr; 58 int retval, sv_errno, didalloc; 59 struct strbuf ctlbuf; 60 61 if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == 0) 62 return (-1); 63 sig_mutex_lock(&tiptr->ti_lock); 64 65 /* 66 * Acquire buffer for use in sending/receiving the message. 67 * Note: assumes (correctly) that ti_ctlsize is large enough 68 * to hold sizeof (struct T_info_req/ack) 69 */ 70 if (_t_acquire_ctlbuf(tiptr, &ctlbuf, &didalloc) < 0) { 71 sv_errno = errno; 72 sig_mutex_unlock(&tiptr->ti_lock); 73 errno = sv_errno; 74 return (-1); 75 } 76 77 /* LINTED pointer cast */ 78 inforeqp = (struct T_info_req *)ctlbuf.buf; 79 inforeqp->PRIM_type = T_INFO_REQ; 80 81 do { 82 retval = _t_do_ioctl(fd, ctlbuf.buf, 83 (int)sizeof (struct T_info_req), TI_GETINFO, &retlen); 84 } while (retval < 0 && errno == EINTR); 85 86 if (retval < 0) 87 goto err_out; 88 89 if (retlen != (int)sizeof (struct T_info_ack)) { 90 t_errno = TSYSERR; 91 errno = EIO; 92 goto err_out; 93 } 94 95 /* LINTED pointer cast */ 96 infoackp = (struct T_info_ack *)ctlbuf.buf; 97 98 info->addr = infoackp->ADDR_size; 99 info->options = infoackp->OPT_size; 100 info->tsdu = infoackp->TSDU_size; 101 info->etsdu = infoackp->ETSDU_size; 102 info->connect = infoackp->CDATA_size; 103 info->discon = infoackp->DDATA_size; 104 info->servtype = infoackp->SERV_type; 105 106 if (_T_IS_XTI(api_semantics)) { 107 /* XTI ONLY - TLI t_info struct does not have "flags" */ 108 info->flags = 0; 109 if (infoackp->PROVIDER_flag & (SENDZERO|OLD_SENDZERO)) 110 info->flags |= T_SENDZERO; 111 } 112 if (didalloc) 113 free(ctlbuf.buf); 114 else 115 tiptr->ti_ctlbuf = ctlbuf.buf; 116 sig_mutex_unlock(&tiptr->ti_lock); 117 return (0); 118 119 err_out: 120 sv_errno = errno; 121 if (didalloc) 122 free(ctlbuf.buf); 123 else 124 tiptr->ti_ctlbuf = ctlbuf.buf; 125 sig_mutex_unlock(&tiptr->ti_lock); 126 errno = sv_errno; 127 return (-1); 128 } 129