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 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
33 * All Rights Reserved
34 *
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
37 * contributors.
38 */
39
40 /*
41 * Kernel TLI-like function to unbind a transport endpoint
42 * to an address.
43 *
44 * Returns 0 on success and ret is set if non-NULL,
45 * else positive error code.
46 */
47
48 #include <sys/param.h>
49 #include <sys/types.h>
50 #include <sys/proc.h>
51 #include <sys/file.h>
52 #include <sys/user.h>
53 #include <sys/errno.h>
54 #include <sys/stream.h>
55 #include <sys/strsubr.h>
56 #include <sys/ioctl.h>
57 #include <sys/stropts.h>
58 #include <sys/vnode.h>
59 #include <sys/tihdr.h>
60 #include <sys/timod.h>
61 #include <sys/tiuser.h>
62 #include <sys/t_kuser.h>
63 #include <sys/kmem.h>
64 #include <sys/sysmacros.h>
65
66
67 int
t_kunbind(TIUSER * tiptr)68 t_kunbind(TIUSER *tiptr)
69 {
70 struct T_unbind_req *unbind_req;
71 struct T_ok_ack *ok_ack;
72 int unbindsz;
73 vnode_t *vp;
74 file_t *fp;
75 char *buf;
76 struct strioctl strioc;
77 int retval;
78 int error;
79
80 error = 0;
81 retval = 0;
82 fp = tiptr->fp;
83 vp = fp->f_vnode;
84
85 /*
86 * send the ioctl request and wait
87 * for a reply.
88 */
89 unbindsz = MAX(TUNBINDREQSZ, TOKACKSZ);
90 buf = kmem_alloc(unbindsz, KM_SLEEP);
91 /* LINTED pointer alignment */
92 unbind_req = (struct T_unbind_req *)buf;
93 unbind_req->PRIM_type = T_UNBIND_REQ;
94
95 strioc.ic_cmd = TI_UNBIND;
96 strioc.ic_timout = 0;
97 strioc.ic_dp = buf;
98 strioc.ic_len = (int)TUNBINDREQSZ;
99
100 error = strdoioctl(vp->v_stream, &strioc, FNATIVE, K_TO_K, CRED(),
101 &retval);
102 if (error)
103 goto badbind;
104
105 if (retval) {
106 if ((retval & 0xff) == TSYSERR)
107 error = (retval >> 8) & 0xff;
108 else
109 error = t_tlitosyserr(retval & 0xff);
110 goto badbind;
111 }
112
113 /* LINTED pointer alignment */
114 ok_ack = (struct T_ok_ack *)strioc.ic_dp;
115 if (strioc.ic_len < TOKACKSZ ||
116 ok_ack->PRIM_type != T_OK_ACK ||
117 ok_ack->CORRECT_prim != T_UNBIND_REQ)
118 error = EIO;
119
120 badbind:
121 kmem_free(buf, unbindsz);
122 return (error);
123 }
124