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
_tx_getinfo(int fd,struct t_info * info,int api_semantics)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