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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 /*
27 * SMB: nt_cancel
28 *
29 * This SMB allows a client to cancel a request currently pending at the
30 * server.
31 *
32 * Client Request Description
33 * ================================== =================================
34 *
35 * UCHAR WordCount; No words are sent (== 0)
36 * USHORT ByteCount; No bytes (==0)
37 *
38 * The Sid, Uid, Pid, Tid, and Mid fields of the SMB are used to locate an
39 * pending server request from this session. If a pending request is
40 * found, it is "hurried along" which may result in success or failure of
41 * the original request. No other response is generated for this SMB.
42 */
43
44 #include <smbsrv/smb_kproto.h>
45
46 smb_sdrc_t
smb_pre_nt_cancel(smb_request_t * sr)47 smb_pre_nt_cancel(smb_request_t *sr)
48 {
49 DTRACE_SMB_1(op__NtCancel__start, smb_request_t *, sr);
50 return (SDRC_SUCCESS);
51 }
52
53 void
smb_post_nt_cancel(smb_request_t * sr)54 smb_post_nt_cancel(smb_request_t *sr)
55 {
56 DTRACE_SMB_1(op__NtCancel__done, smb_request_t *, sr);
57 }
58
59 smb_sdrc_t
smb_com_nt_cancel(smb_request_t * sr)60 smb_com_nt_cancel(smb_request_t *sr)
61 {
62 struct smb_request *req;
63 struct smb_session *session;
64
65 session = sr->session;
66
67 smb_slist_enter(&session->s_req_list);
68 req = smb_slist_head(&session->s_req_list);
69 while (req) {
70 ASSERT(req->sr_magic == SMB_REQ_MAGIC);
71 if ((req != sr) &&
72 (req->smb_uid == sr->smb_uid) &&
73 (req->smb_pid == sr->smb_pid) &&
74 (req->smb_tid == sr->smb_tid) &&
75 (req->smb_mid == sr->smb_mid)) {
76 smb_request_cancel(req);
77 }
78 req = smb_slist_next(&session->s_req_list, req);
79 }
80 smb_slist_exit(&session->s_req_list);
81
82 /* Now, search the notify change queue to find the request */
83
84 smb_reply_specific_cancel_request(sr);
85
86 return (SDRC_NO_REPLY);
87 }
88