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 /*
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates.
24 * Copyright 2014 Nexenta Systems, Inc. All rights reserved.
25 */
26
27 /*
28 * Dispatch function for SMB2_CHANGE_NOTIFY
29 */
30
31 #include <smbsrv/smb2_kproto.h>
32
33 static smb_sdrc_t smb2_change_notify_async(smb_request_t *);
34
35 smb_sdrc_t
smb2_change_notify(smb_request_t * sr)36 smb2_change_notify(smb_request_t *sr)
37 {
38 smb_node_t *node = NULL;
39 uint16_t StructSize;
40 uint16_t iFlags;
41 uint32_t oBufLength;
42 smb2fid_t smb2fid;
43 uint32_t CompletionFilter;
44 uint32_t reserved;
45 uint32_t status;
46 int rc = 0;
47
48 /*
49 * SMB2 Change Notify request
50 */
51 rc = smb_mbc_decodef(
52 &sr->smb_data, "wwlqqll",
53 &StructSize, /* w */
54 &iFlags, /* w */
55 &oBufLength, /* l */
56 &smb2fid.persistent, /* q */
57 &smb2fid.temporal, /* q */
58 &CompletionFilter, /* l */
59 &reserved); /* l */
60 if (rc || StructSize != 32)
61 return (SDRC_ERROR);
62
63 status = smb2sr_lookup_fid(sr, &smb2fid);
64 if (status)
65 goto puterror;
66
67 node = sr->fid_ofile->f_node;
68 if (node == NULL || !smb_node_is_dir(node)) {
69 status = NT_STATUS_INVALID_PARAMETER;
70 goto puterror;
71 }
72
73 /*
74 * Let Change Notify "go async", because it
75 * may block indefinitely.
76 */
77 status = smb2sr_go_async(sr, smb2_change_notify_async);
78 puterror:
79 ASSERT(status != 0);
80 smb2sr_put_error(sr, status);
81 return (SDRC_SUCCESS);
82 }
83
84 static smb_sdrc_t
smb2_change_notify_async(smb_request_t * sr)85 smb2_change_notify_async(smb_request_t *sr)
86 {
87 uint16_t StructSize;
88 uint16_t iFlags;
89 uint32_t oBufLength;
90 smb2fid_t smb2fid;
91 uint32_t CompletionFilter;
92 uint32_t reserved;
93 uint32_t status;
94 uint16_t DataOff;
95 int rc = 0;
96
97 /*
98 * SMB2 Change Notify request
99 */
100 rc = smb_mbc_decodef(
101 &sr->smb_data, "wwlqqll",
102 &StructSize, /* w */
103 &iFlags, /* w */
104 &oBufLength, /* l */
105 &smb2fid.persistent, /* q */
106 &smb2fid.temporal, /* q */
107 &CompletionFilter, /* l */
108 &reserved); /* l */
109 if (rc || StructSize != 32)
110 return (SDRC_ERROR);
111
112 status = smb2sr_lookup_fid(sr, &smb2fid);
113 if (status != 0) {
114 smb2sr_put_error(sr, status);
115 return (SDRC_SUCCESS);
116 }
117
118 CompletionFilter &= FILE_NOTIFY_VALID_MASK;
119 if (iFlags & SMB2_WATCH_TREE)
120 CompletionFilter |= NODE_FLAGS_WATCH_TREE;
121
122 if (oBufLength > smb2_max_trans)
123 oBufLength = smb2_max_trans;
124 sr->raw_data.max_bytes = oBufLength;
125
126 status = smb_notify_common(sr, &sr->raw_data, CompletionFilter);
127 if (status != 0) {
128 smb2sr_put_error(sr, status);
129 return (SDRC_SUCCESS);
130 }
131
132 /*
133 * SMB2 Change Notify reply
134 */
135 DataOff = SMB2_HDR_SIZE + 8;
136 oBufLength = MBC_LENGTH(&sr->raw_data);
137 rc = smb_mbc_encodef(
138 &sr->reply, "wwlC",
139 9, /* StructSize */ /* w */
140 DataOff, /* w */
141 oBufLength, /* l */
142 &sr->raw_data); /* C */
143 if (rc)
144 return (SDRC_ERROR);
145
146 return (SDRC_SUCCESS);
147 }
148