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 2006 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 "mt.h"
34 #include <errno.h>
35 #include <unistd.h>
36 #include <sys/stream.h>
37 #include <stropts.h>
38 #define _SUN_TPI_VERSION 2
39 #include <sys/tihdr.h>
40 #include <sys/timod.h>
41 #include <xti.h>
42 #include <assert.h>
43 #include "tx.h"
44
45 int
46 _tx_look(int fd, int api_semantics)
47 {
48 int state;
49 int sv_errno;
50 int do_expinline_peek; /* unusual XTI specific processing */
51 struct _ti_user *tiptr;
52
116 * We will also need to sort out if "write side" events
117 * (such as T_GODATA/T_GOEXDATA) take precedence over
118 * all other events (all read side) or not.
119 */
120 }
121 #endif /* notyet */
122
123 strpeek.ctlbuf.maxlen = (int)sizeof (ctltype);
124 strpeek.ctlbuf.len = 0;
125 strpeek.ctlbuf.buf = (char *)&ctltype;
126 strpeek.databuf.maxlen = 0;
127 strpeek.databuf.len = 0;
128 strpeek.databuf.buf = NULL;
129 strpeek.flags = 0;
130
131 do {
132 retval = ioctl(fd, I_PEEK, &strpeek);
133 } while (retval < 0 && errno == EINTR);
134
135 if (retval < 0) {
136 if (_T_IS_TLI(api_semantics)) {
137 /*
138 * This return of T_ERROR event is ancient
139 * SVR3 TLI semantics and not documented for
140 * current SVR4 TLI interface.
141 * Fixing this will impact some apps
142 * (e.g. nfsd,lockd) in ON consolidation
143 * so they need to be fixed first before TLI
144 * can be fixed.
145 * XXX Should we never fix this because it might
146 * break apps in field ?
147 */
148 return (T_ERROR);
149 }
150 /*
151 * XTI semantics (also identical to documented,
152 * but not implemented TLI semantics).
153 */
154 t_errno = TSYSERR;
155 return (-1);
156 }
157
158 /*
159 * if something there and cntl part also there
160 */
161 if ((tiptr->ti_lookcnt > 0) ||
162 ((retval > 0) && (strpeek.ctlbuf.len >= (int)sizeof (t_scalar_t)))) {
163 /* LINTED pointer cast */
164 pptr = (union T_primitives *)strpeek.ctlbuf.buf;
165 if (tiptr->ti_lookcnt > 0) {
166 /* LINTED pointer cast */
167 type = *((t_scalar_t *)tiptr->ti_lookbufs.tl_lookcbuf);
168 /*
169 * If message on stream head is a T_DISCON_IND, that
170 * has priority over a T_ORDREL_IND in the look
171 * buffer.
172 * (This assumes that T_ORDREL_IND can only be in the
173 * first look buffer in the list)
174 */
175 if ((type == T_ORDREL_IND) && retval &&
176 (pptr->type == T_DISCON_IND)) {
177 type = pptr->type;
178 /*
179 * Blow away T_ORDREL_IND
180 */
181 _t_free_looklist_head(tiptr);
182 }
|
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 2006 Sun Microsystems, Inc. All rights reserved.
28 * Use is subject to license terms.
29 * Copyright 2014 Gary Mills
30 */
31
32 #include "mt.h"
33 #include <errno.h>
34 #include <unistd.h>
35 #include <sys/stream.h>
36 #include <stropts.h>
37 #define _SUN_TPI_VERSION 2
38 #include <sys/tihdr.h>
39 #include <sys/timod.h>
40 #include <xti.h>
41 #include <assert.h>
42 #include "tx.h"
43
44 int
45 _tx_look(int fd, int api_semantics)
46 {
47 int state;
48 int sv_errno;
49 int do_expinline_peek; /* unusual XTI specific processing */
50 struct _ti_user *tiptr;
51
115 * We will also need to sort out if "write side" events
116 * (such as T_GODATA/T_GOEXDATA) take precedence over
117 * all other events (all read side) or not.
118 */
119 }
120 #endif /* notyet */
121
122 strpeek.ctlbuf.maxlen = (int)sizeof (ctltype);
123 strpeek.ctlbuf.len = 0;
124 strpeek.ctlbuf.buf = (char *)&ctltype;
125 strpeek.databuf.maxlen = 0;
126 strpeek.databuf.len = 0;
127 strpeek.databuf.buf = NULL;
128 strpeek.flags = 0;
129
130 do {
131 retval = ioctl(fd, I_PEEK, &strpeek);
132 } while (retval < 0 && errno == EINTR);
133
134 if (retval < 0) {
135 /*
136 * XTI semantics (also identical to documented
137 * TLI semantics).
138 */
139 t_errno = TSYSERR;
140 return (-1);
141 }
142
143 /*
144 * if something there and cntl part also there
145 */
146 if ((tiptr->ti_lookcnt > 0) ||
147 ((retval > 0) && (strpeek.ctlbuf.len >=
148 (int)sizeof (t_scalar_t)))) {
149 /* LINTED pointer cast */
150 pptr = (union T_primitives *)strpeek.ctlbuf.buf;
151 if (tiptr->ti_lookcnt > 0) {
152 /* LINTED pointer cast */
153 type = *((t_scalar_t *)tiptr->ti_lookbufs.tl_lookcbuf);
154 /*
155 * If message on stream head is a T_DISCON_IND, that
156 * has priority over a T_ORDREL_IND in the look
157 * buffer.
158 * (This assumes that T_ORDREL_IND can only be in the
159 * first look buffer in the list)
160 */
161 if ((type == T_ORDREL_IND) && retval &&
162 (pptr->type == T_DISCON_IND)) {
163 type = pptr->type;
164 /*
165 * Blow away T_ORDREL_IND
166 */
167 _t_free_looklist_head(tiptr);
168 }
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