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. All rights reserved.
24  * Copyright 2017 Nexenta Systems, Inc.  All rights reserved.
25  */
26 
27 /*
28  * SMB requests.
29  *
30  * Request
31  *   Header
32  *	Magic		0xFF 'S' 'M' 'B'
33  *	smb_com 	a byte, the "first" command
34  *	Error		a 4-byte union, ignored in a request
35  *	smb_flg		a one byte set of eight flags
36  *	smb_flg2	a two byte set of 16 flags
37  *	.		twelve reserved bytes, have a role
38  *			in connectionless transports (IPX, UDP?)
39  *	smb_tid		a 16-bit tree ID, a mount point sorta,
40  *			0xFFFF is this command does not have
41  *			or require a tree context
42  *	smb_pid		a 16-bit process ID
43  *	smb_uid		a 16-bit user ID, specific to this "session"
44  *			and mapped to a system (bona-fide) UID
45  *	smb_mid		a 16-bit multiplex ID, used to differentiate
46  *			multiple simultaneous requests from the same
47  *			process (pid) (ref RPC "xid")
48  *
49  *   Chained (AndX) commands (0 or more)
50  *	smb_wct		a byte, number of 16-bit words containing
51  *			command parameters, min 2 for chained command
52  *	andx_com	a byte, the "next" command, 0xFF for none
53  *	.		an unused byte
54  *	andx_off	a 16-bit offset, byte displacement from &Magic
55  *			to the smb_wct field of the "next" command,
56  *			ignore if andx_com is 0xFF, s/b 0 if no next
57  *	smb_vwv[]	0 or more 16-bit (sorta) parameters for
58  *			"this" command (i.e. smb_com if this is the
59  *			first parameters, or the andx_com of the just
60  *			previous block.
61  *	smb_bcc		a 16-bit count of smb_data[] bytes
62  *	smb_data[]	0 or more bytes, format specific to commands
63  *	padding[]	Optional padding
64  *
65  *   Last command
66  *	smb_wct		a byte, number of 16-bit words containing
67  *			command parameters, min 0 for chained command
68  *	smb_vwv[]	0 or more 16-bit (sorta) parameters for
69  *			"this" command (i.e. smb_com if this is the
70  *			first parameters, or the andx_com of the just
71  *			previous block.
72  *	smb_bcc		a 16-bit count of smb_data[] bytes
73  *	smb_data[]	0 or more bytes, format specific to commands
74  *
75  * Reply
76  *   Header
77  *	Magic		0xFF 'S' 'M' 'B'
78  *	smb_com 	a byte, the "first" command, corresponds
79  *			to request
80  *	Error		a 4-byte union, coding depends on dialect in use
81  *			for "DOS" errors
82  *				a byte for error class
83  *				an unused byte
84  *				a 16-bit word for error code
85  *			for "NT" errors
86  *				a 32-bit error code which
87  *				is a packed class and specifier
88  *			for "OS/2" errors
89  *				I don't know
90  *			The error information is specific to the
91  *			last command in the reply chain.
92  *	smb_flg		a one byte set of eight flags, 0x80 bit set
93  *			indicating this message is a reply
94  *	smb_flg2	a two byte set of 16 flags
95  *	.		twelve reserved bytes, have a role
96  *			in connectionless transports (IPX, UDP?)
97  *	smb_tid		a 16-bit tree ID, a mount point sorta,
98  *			should be the same as the request
99  *	smb_pid		a 16-bit process ID, MUST BE the same as request
100  *	smb_uid		a 16-bit user ID, specific to this "session"
101  *			and mapped to a system (bona-fide) UID,
102  *			should be the same as request
103  *	smb_mid		a 16-bit multiplex ID, used to differentiate
104  *			multiple simultaneous requests from the same
105  *			process (pid) (ref RPC "xid"), MUST BE the
106  *			same as request
107  *	padding[]	Optional padding
108  *
109  *   Chained (AndX) commands (0 or more)
110  *	smb_wct		a byte, number of 16-bit words containing
111  *			command parameters, min 2 for chained command,
112  *	andx_com	a byte, the "next" command, 0xFF for none,
113  *			corresponds to request, if this is the chained
114  *			command that had an error set to 0xFF
115  *	.		an unused byte
116  *	andx_off	a 16-bit offset, byte displacement from &Magic
117  *			to the smb_wct field of the "next" command,
118  *			ignore if andx_com is 0xFF, s/b 0 if no next
119  *	smb_vwv[]	0 or more 16-bit (sorta) parameters for
120  *			"this" command (i.e. smb_com if this is the
121  *			first parameters, or the andx_com of the just
122  *			previous block. Empty if an error.
123  *	smb_bcc		a 16-bit count of smb_data[] bytes
124  *	smb_data[]	0 or more bytes, format specific to commands
125  *			empty if an error.
126  *
127  *   Last command
128  *	smb_wct		a byte, number of 16-bit words containing
129  *			command parameters, min 0 for chained command
130  *	smb_vwv[]	0 or more 16-bit (sorta) parameters for
131  *			"this" command (i.e. smb_com if this is the
132  *			first parameters, or the andx_com of the just
133  *			previous block, empty if an error.
134  *	smb_bcc		a 16-bit count of smb_data[] bytes
135  *	smb_data[]	0 or more bytes, format specific to commands,
136  *			empty if an error.
137  */
138 
139 #include <smbsrv/smb_kproto.h>
140 #include <smbsrv/smb_kstat.h>
141 #include <sys/sdt.h>
142 #include <sys/spl.h>
143 
144 static int is_andx_com(unsigned char);
145 static int smbsr_check_result(struct smb_request *, int, int);
146 static void smb1_tq_work(void *);
147 
148 static const smb_disp_entry_t
149 smb_disp_table[SMB_COM_NUM] = {
150 	{ "SmbCreateDirectory", SMB_SDT_OPS(create_directory),  /* 0x00 000 */
151 	    0x00, PC_NETWORK_PROGRAM_1_0 },
152 	{ "SmbDeleteDirectory", SMB_SDT_OPS(delete_directory),	/* 0x01 001 */
153 	    0x01, PC_NETWORK_PROGRAM_1_0 },
154 	{ "SmbOpen", SMB_SDT_OPS(open),				/* 0x02 002 */
155 	    0x02, PC_NETWORK_PROGRAM_1_0 },
156 	{ "SmbCreate", SMB_SDT_OPS(create),			/* 0x03 003 */
157 	    0x03, PC_NETWORK_PROGRAM_1_0 },
158 	{ "SmbClose", SMB_SDT_OPS(close),			/* 0x04 004 */
159 	    0x04, PC_NETWORK_PROGRAM_1_0 },
160 	{ "SmbFlush", SMB_SDT_OPS(flush),			/* 0x05 005 */
161 	    0x05, PC_NETWORK_PROGRAM_1_0 },
162 	{ "SmbDelete", SMB_SDT_OPS(delete),			/* 0x06 006 */
163 	    0x06, PC_NETWORK_PROGRAM_1_0 },
164 	{ "SmbRename", SMB_SDT_OPS(rename),			/* 0x07 007 */
165 	    0x07, PC_NETWORK_PROGRAM_1_0 },
166 	{ "SmbQueryInformation", SMB_SDT_OPS(query_information), /* 0x08 008 */
167 	    0x08, PC_NETWORK_PROGRAM_1_0 },
168 	{ "SmbSetInformation", SMB_SDT_OPS(set_information),	/* 0x09 009 */
169 	    0x09, PC_NETWORK_PROGRAM_1_0 },
170 	{ "SmbRead", SMB_SDT_OPS(read),				/* 0x0A 010 */
171 	    0x0A, PC_NETWORK_PROGRAM_1_0 },
172 	{ "SmbWrite", SMB_SDT_OPS(write),			/* 0x0B 011 */
173 	    0x0B, PC_NETWORK_PROGRAM_1_0 },
174 	{ "SmbLockByteRange", SMB_SDT_OPS(lock_byte_range),	/* 0x0C 012 */
175 	    0x0C, PC_NETWORK_PROGRAM_1_0 },
176 	{ "SmbUnlockByteRange", SMB_SDT_OPS(unlock_byte_range),	/* 0x0D 013 */
177 	    0x0D, PC_NETWORK_PROGRAM_1_0 },
178 	{ "SmbCreateTemporary", SMB_SDT_OPS(create_temporary),	/* 0x0E 014 */
179 	    0x0E, PC_NETWORK_PROGRAM_1_0 },
180 	{ "SmbCreateNew", SMB_SDT_OPS(create_new),		/* 0x0F 015 */
181 	    0x0F, PC_NETWORK_PROGRAM_1_0 },
182 	{ "SmbCheckDirectory", SMB_SDT_OPS(check_directory),	/* 0x10 016 */
183 	    0x10, PC_NETWORK_PROGRAM_1_0 },
184 	{ "SmbProcessExit", SMB_SDT_OPS(process_exit),		/* 0x11 017 */
185 	    0x11, PC_NETWORK_PROGRAM_1_0,
186 	    SDDF_SUPPRESS_TID | SDDF_SUPPRESS_UID },
187 	{ "SmbSeek", SMB_SDT_OPS(seek),				/* 0x12 018 */
188 	    0x12, PC_NETWORK_PROGRAM_1_0 },
189 	{ "SmbLockAndRead", SMB_SDT_OPS(lock_and_read),		/* 0x13 019 */
190 	    0x13, LANMAN1_0 },
191 	{ "SmbWriteAndUnlock", SMB_SDT_OPS(write_and_unlock),	/* 0x14 020 */
192 	    0x14, LANMAN1_0 },
193 	{ "Invalid", SMB_SDT_OPS(invalid), 0x15, 0 },		/* 0x15	021 */
194 	{ "Invalid", SMB_SDT_OPS(invalid), 0x16, 0 },		/* 0x16 022 */
195 	{ "Invalid", SMB_SDT_OPS(invalid), 0x17, 0 },		/* 0x17 023 */
196 	{ "Invalid", SMB_SDT_OPS(invalid), 0x18, 0 },		/* 0x18 024 */
197 	{ "Invalid", SMB_SDT_OPS(invalid), 0x19, 0 },		/* 0x19 025 */
198 	{ "SmbReadRaw", SMB_SDT_OPS(read_raw),			/* 0x1A 026 */
199 	    0x1A, LANMAN1_0 },
200 	{ "Invalid", SMB_SDT_OPS(invalid), 0x1B, 0 },		/* 0x1B 027 */
201 	{ "Invalid", SMB_SDT_OPS(invalid), 0x1C, 0 },		/* 0x1C 028 */
202 	{ "SmbWriteRaw", SMB_SDT_OPS(write_raw),		/* 0x1D 029 */
203 	    0x1D, LANMAN1_0 },
204 	{ "Invalid", SMB_SDT_OPS(invalid), 0x1E, 0 },		/* 0x1E 030 */
205 	{ "Invalid", SMB_SDT_OPS(invalid), 0x1F, 0 },		/* 0x1F 031 */
206 	{ "Invalid", SMB_SDT_OPS(invalid), 0x20, 0 },		/* 0x20 032 */
207 	{ "Invalid", SMB_SDT_OPS(invalid), 0x21, 0 },		/* 0x21 033 */
208 	{ "SmbSetInformation2", SMB_SDT_OPS(set_information2),	/* 0x22 034 */
209 	    0x22, LANMAN1_0 },
210 	{ "SmbQueryInformation2",
211 	    SMB_SDT_OPS(query_information2),			/* 0x23 035 */
212 	    0x23, LANMAN1_0 },
213 	{ "SmbLockingX", SMB_SDT_OPS(locking_andx),		/* 0x24 036 */
214 	    0x24, LANMAN1_0 },
215 	{ "SmbTransaction", SMB_SDT_OPS(transaction),		/* 0x25 037 */
216 	    0x25, LANMAN1_0 },
217 	{ "SmbTransactionSecondary",
218 	    SMB_SDT_OPS(transaction_secondary),			/* 0x26 038 */
219 	    0x26, LANMAN1_0 },
220 	{ "SmbIoctl", SMB_SDT_OPS(ioctl),			/* 0x27 039 */
221 	    0x27, LANMAN1_0 },
222 	{ "Invalid", SMB_SDT_OPS(invalid), 0x28, 0 },	/* 0x28 040 */
223 	{ "Invalid", SMB_SDT_OPS(invalid), 0x29, 0 },	/* 0x29 041 */
224 	{ "Invalid", SMB_SDT_OPS(invalid), 0x2A, 0 },	/* 0x2A 042 */
225 	{ "SmbEcho", SMB_SDT_OPS(echo),				/* 0x2B 043 */
226 	    0x2B, LANMAN1_0, SDDF_SUPPRESS_TID | SDDF_SUPPRESS_UID },
227 	{ "SmbWriteAndClose", SMB_SDT_OPS(write_and_close),	/* 0x2C 044 */
228 	    0x2C, LANMAN1_0 },
229 	{ "SmbOpenX", SMB_SDT_OPS(open_andx),			/* 0x2D 045 */
230 	    0x2D, LANMAN1_0 },
231 	{ "SmbReadX", SMB_SDT_OPS(read_andx),			/* 0x2E 046 */
232 	    0x2E, LANMAN1_0 },
233 	{ "SmbWriteX", SMB_SDT_OPS(write_andx),			/* 0x2F 047 */
234 	    0x2F, LANMAN1_0 },
235 	{ "Invalid", SMB_SDT_OPS(invalid), 0x30, 0 },	/* 0x30 048 */
236 	{ "SmbCloseAndTreeDisconnect",
237 	    SMB_SDT_OPS(close_and_tree_disconnect),		/* 0x31 049 */
238 	    0x31, LANMAN1_0 },
239 	{ "SmbTransaction2", SMB_SDT_OPS(transaction2),		/* 0x32 050 */
240 	    0x32, LM1_2X002 },
241 	{ "SmbTransaction2Secondary",
242 	    SMB_SDT_OPS(transaction2_secondary),		/* 0x33 051 */
243 	    0x33, LM1_2X002 },
244 	{ "SmbFindClose2", SMB_SDT_OPS(find_close2),		/* 0x34 052 */
245 	    0x34, LM1_2X002 },
246 	{ "Invalid", SMB_SDT_OPS(invalid), 0x35, 0 },	/* 0x35 053 */
247 	{ "Invalid", SMB_SDT_OPS(invalid), 0x36, 0 },	/* 0x36 054 */
248 	{ "Invalid", SMB_SDT_OPS(invalid), 0x37, 0 },	/* 0x37 055 */
249 	{ "Invalid", SMB_SDT_OPS(invalid), 0x38, 0 },	/* 0x38 056 */
250 	{ "Invalid", SMB_SDT_OPS(invalid), 0x39, 0 },	/* 0x39 057 */
251 	{ "Invalid", SMB_SDT_OPS(invalid), 0x3A, 0 },	/* 0x3A 058 */
252 	{ "Invalid", SMB_SDT_OPS(invalid), 0x3B, 0 },	/* 0x3B 059 */
253 	{ "Invalid", SMB_SDT_OPS(invalid), 0x3C, 0 },	/* 0x3C 060 */
254 	{ "Invalid", SMB_SDT_OPS(invalid), 0x3D, 0 },	/* 0x3D 061 */
255 	{ "Invalid", SMB_SDT_OPS(invalid), 0x3E, 0 },	/* 0x3E 062 */
256 	{ "Invalid", SMB_SDT_OPS(invalid), 0x3F, 0 },	/* 0x3F 063 */
257 	{ "Invalid", SMB_SDT_OPS(invalid), 0x40, 0 },	/* 0x40 064 */
258 	{ "Invalid", SMB_SDT_OPS(invalid), 0x47, 0 },	/* 0x47 065 */
259 	{ "Invalid", SMB_SDT_OPS(invalid), 0x48, 0 },	/* 0x48 066 */
260 	{ "Invalid", SMB_SDT_OPS(invalid), 0x49, 0 },	/* 0x49 067 */
261 	{ "Invalid", SMB_SDT_OPS(invalid), 0x44, 0 },	/* 0x44 068 */
262 	{ "Invalid", SMB_SDT_OPS(invalid), 0x45, 0 },	/* 0x45 069 */
263 	{ "Invalid", SMB_SDT_OPS(invalid), 0x46, 0 },	/* 0x46 070 */
264 	{ "Invalid", SMB_SDT_OPS(invalid), 0x47, 0 },	/* 0x47 071 */
265 	{ "Invalid", SMB_SDT_OPS(invalid), 0x48, 0 },	/* 0x48 072 */
266 	{ "Invalid", SMB_SDT_OPS(invalid), 0x49, 0 },	/* 0x49 073 */
267 	{ "Invalid", SMB_SDT_OPS(invalid), 0x4A, 0 },	/* 0x4A 074 */
268 	{ "Invalid", SMB_SDT_OPS(invalid), 0x4B, 0 },	/* 0x4B 075 */
269 	{ "Invalid", SMB_SDT_OPS(invalid), 0x4C, 0 },	/* 0x4C 076 */
270 	{ "Invalid", SMB_SDT_OPS(invalid), 0x4D, 0 },	/* 0x4D 077 */
271 	{ "Invalid", SMB_SDT_OPS(invalid), 0x4E, 0 },	/* 0x4E 078 */
272 	{ "Invalid", SMB_SDT_OPS(invalid), 0x4F, 0 },	/* 0x4F 079 */
273 	{ "Invalid", SMB_SDT_OPS(invalid), 0x50, 0 },	/* 0x50 080 */
274 	{ "Invalid", SMB_SDT_OPS(invalid), 0x51, 0 },	/* 0x51 081 */
275 	{ "Invalid", SMB_SDT_OPS(invalid), 0x52, 0 },	/* 0x52 082 */
276 	{ "Invalid", SMB_SDT_OPS(invalid), 0x53, 0 },	/* 0x53 083 */
277 	{ "Invalid", SMB_SDT_OPS(invalid), 0x54, 0 },	/* 0x54 084 */
278 	{ "Invalid", SMB_SDT_OPS(invalid), 0x55, 0 },	/* 0x55 085 */
279 	{ "Invalid", SMB_SDT_OPS(invalid), 0x56, 0 },	/* 0x56 086 */
280 	{ "Invalid", SMB_SDT_OPS(invalid), 0x57, 0 },	/* 0x57 087 */
281 	{ "Invalid", SMB_SDT_OPS(invalid), 0x58, 0 },	/* 0x58 088 */
282 	{ "Invalid", SMB_SDT_OPS(invalid), 0x59, 0 },	/* 0x59 089 */
283 	{ "Invalid", SMB_SDT_OPS(invalid), 0x5A, 0 },	/* 0x5A 090 */
284 	{ "Invalid", SMB_SDT_OPS(invalid), 0x5B, 0 },	/* 0x5B 091 */
285 	{ "Invalid", SMB_SDT_OPS(invalid), 0x5C, 0 },	/* 0x5C 092 */
286 	{ "Invalid", SMB_SDT_OPS(invalid), 0x5D, 0 },	/* 0x5D 093 */
287 	{ "Invalid", SMB_SDT_OPS(invalid), 0x5E, 0 },	/* 0x5E 094 */
288 	{ "Invalid", SMB_SDT_OPS(invalid), 0x5F, 0 },	/* 0x5F 095 */
289 	{ "Invalid", SMB_SDT_OPS(invalid), 0x60, 0 },	/* 0x60 096 */
290 	{ "Invalid", SMB_SDT_OPS(invalid), 0x61, 0 },	/* 0x61 097 */
291 	{ "Invalid", SMB_SDT_OPS(invalid), 0x62, 0 },	/* 0x62 098 */
292 	{ "Invalid", SMB_SDT_OPS(invalid), 0x63, 0 },	/* 0x63 099 */
293 	{ "Invalid", SMB_SDT_OPS(invalid), 0x64, 0 },	/* 0x64 100 */
294 	{ "Invalid", SMB_SDT_OPS(invalid), 0x65, 0 },	/* 0x65 101 */
295 	{ "Invalid", SMB_SDT_OPS(invalid), 0x66, 0 },	/* 0x66 102 */
296 	{ "Invalid", SMB_SDT_OPS(invalid), 0x67, 0 },	/* 0x67 103 */
297 	{ "Invalid", SMB_SDT_OPS(invalid), 0x68, 0 },	/* 0x68 104 */
298 	{ "Invalid", SMB_SDT_OPS(invalid), 0x69, 0 },	/* 0x69 105 */
299 	{ "Invalid", SMB_SDT_OPS(invalid), 0x6A, 0 },	/* 0x6A 106 */
300 	{ "Invalid", SMB_SDT_OPS(invalid), 0x6B, 0 },	/* 0x6B 107 */
301 	{ "Invalid", SMB_SDT_OPS(invalid), 0x6C, 0 },	/* 0x6C 108 */
302 	{ "Invalid", SMB_SDT_OPS(invalid), 0x6D, 0 },	/* 0x6D 109 */
303 	{ "Invalid", SMB_SDT_OPS(invalid), 0x6E, 0 },	/* 0x6E 110 */
304 	{ "Invalid", SMB_SDT_OPS(invalid), 0x6F, 0 },	/* 0x6F 111 */
305 	{ "SmbTreeConnect", SMB_SDT_OPS(tree_connect),		/* 0x70 112 */
306 	    0x70, PC_NETWORK_PROGRAM_1_0, SDDF_SUPPRESS_TID },
307 	{ "SmbTreeDisconnect", SMB_SDT_OPS(tree_disconnect),	/* 0x71 113 */
308 	    0x71, PC_NETWORK_PROGRAM_1_0,
309 	    SDDF_SUPPRESS_TID | SDDF_SUPPRESS_UID },
310 	/*
311 	 * NB: Negotiate gets special handling via
312 	 * smb_initial_request_handler.  After that,
313 	 * another Negotiate is an invalid request.
314 	 */
315 	{ "SmbNegotiate", SMB_SDT_OPS(invalid),			/* 0x72 114 */
316 	    0x72, PC_NETWORK_PROGRAM_1_0,
317 	    SDDF_SUPPRESS_TID | SDDF_SUPPRESS_UID },
318 	{ "SmbSessionSetupX", SMB_SDT_OPS(session_setup_andx),	/* 0x73 115 */
319 	    0x73, LANMAN1_0, SDDF_SUPPRESS_TID | SDDF_SUPPRESS_UID },
320 	{ "SmbLogoffX", SMB_SDT_OPS(logoff_andx),		/* 0x74 116 */
321 	    0x74, LM1_2X002, SDDF_SUPPRESS_TID },
322 	{ "SmbTreeConnectX", SMB_SDT_OPS(tree_connect_andx),	/* 0x75 117 */
323 	    0x75, LANMAN1_0, SDDF_SUPPRESS_TID },
324 	{ "Invalid", SMB_SDT_OPS(invalid), 0x76, 0, 0 },	/* 0x76 118 */
325 	{ "Invalid", SMB_SDT_OPS(invalid), 0x77, 0, 0 },	/* 0x77 119 */
326 	{ "Invalid", SMB_SDT_OPS(invalid), 0x78, 0, 0 },	/* 0x78 120 */
327 	{ "Invalid", SMB_SDT_OPS(invalid), 0x79, 0, 0 },	/* 0x79 121 */
328 	{ "Invalid", SMB_SDT_OPS(invalid), 0x7A, 0, 0 },	/* 0x7A 122 */
329 	{ "Invalid", SMB_SDT_OPS(invalid), 0x7B, 0, 0 },	/* 0x7B 123 */
330 	{ "Invalid", SMB_SDT_OPS(invalid), 0x7C, 0, 0 },	/* 0x7C 124 */
331 	{ "Invalid", SMB_SDT_OPS(invalid), 0x7D, 0, 0 },	/* 0x7D 125 */
332 	{ "Invalid", SMB_SDT_OPS(invalid), 0x7E, 0, 0 },	/* 0x7E 126 */
333 	{ "Invalid", SMB_SDT_OPS(invalid), 0x7F, 0, 0 },	/* 0x7F 127 */
334 	{ "SmbQueryInformationDisk",
335 	    SMB_SDT_OPS(query_information_disk),		/* 0x80 128 */
336 	    0x80, PC_NETWORK_PROGRAM_1_0, 0 },
337 	{ "SmbSearch", SMB_SDT_OPS(search),			/* 0x81 129 */
338 	    0x81, PC_NETWORK_PROGRAM_1_0, 0 },
339 	{ "SmbFind", SMB_SDT_OPS(find),				/* 0x82 130 */
340 	    0x82, LANMAN1_0, 0 },
341 	{ "SmbFindUnique", SMB_SDT_OPS(find_unique),		/* 0x83 131 */
342 	    0x83, LANMAN1_0, 0 },
343 	{ "SmbFindClose", SMB_SDT_OPS(find_close),		/* 0x84 132 */
344 	    0x84, LANMAN1_0, 0 },
345 	{ "Invalid", SMB_SDT_OPS(invalid), 0x85, 0, 0 },	/* 0x85 133 */
346 	{ "Invalid", SMB_SDT_OPS(invalid), 0x86, 0, 0 },	/* 0x86 134 */
347 	{ "Invalid", SMB_SDT_OPS(invalid), 0x87, 0, 0 },	/* 0x87 135 */
348 	{ "Invalid", SMB_SDT_OPS(invalid), 0x88, 0, 0 },	/* 0x88 136 */
349 	{ "Invalid", SMB_SDT_OPS(invalid), 0x89, 0, 0 },	/* 0x89 137 */
350 	{ "Invalid", SMB_SDT_OPS(invalid), 0x8A, 0, 0 },	/* 0x8A 138 */
351 	{ "Invalid", SMB_SDT_OPS(invalid), 0x8B, 0, 0 },	/* 0x8B 139 */
352 	{ "Invalid", SMB_SDT_OPS(invalid), 0x8C, 0, 0 },	/* 0x8C 140 */
353 	{ "Invalid", SMB_SDT_OPS(invalid), 0x8D, 0, 0 },	/* 0x8D 141 */
354 	{ "Invalid", SMB_SDT_OPS(invalid), 0x8E, 0, 0 },	/* 0x8E 142 */
355 	{ "Invalid", SMB_SDT_OPS(invalid), 0x8F, 0, 0 },	/* 0x8F 143 */
356 	{ "Invalid", SMB_SDT_OPS(invalid), 0x90, 0, 0 },	/* 0x90 144 */
357 	{ "Invalid", SMB_SDT_OPS(invalid), 0x91, 0, 0 },	/* 0x91 145 */
358 	{ "Invalid", SMB_SDT_OPS(invalid), 0x92, 0, 0 },	/* 0x92 146 */
359 	{ "Invalid", SMB_SDT_OPS(invalid), 0x93, 0, 0 },	/* 0x93 147 */
360 	{ "Invalid", SMB_SDT_OPS(invalid), 0x94, 0, 0 },	/* 0x94 148 */
361 	{ "Invalid", SMB_SDT_OPS(invalid), 0x95, 0, 0 },	/* 0x95 149 */
362 	{ "Invalid", SMB_SDT_OPS(invalid), 0x96, 0, 0 },	/* 0x96 150 */
363 	{ "Invalid", SMB_SDT_OPS(invalid), 0x97, 0, 0 },	/* 0x97 151 */
364 	{ "Invalid", SMB_SDT_OPS(invalid), 0x98, 0, 0 },	/* 0x98 152 */
365 	{ "Invalid", SMB_SDT_OPS(invalid), 0x99, 0, 0 },	/* 0x99 153 */
366 	{ "Invalid", SMB_SDT_OPS(invalid), 0x9A, 0, 0 },	/* 0x9A 154 */
367 	{ "Invalid", SMB_SDT_OPS(invalid), 0x9B, 0, 0 },	/* 0x9B 155 */
368 	{ "Invalid", SMB_SDT_OPS(invalid), 0x9C, 0, 0 },	/* 0x9C 156 */
369 	{ "Invalid", SMB_SDT_OPS(invalid), 0x9D, 0, 0 },	/* 0x9D 157 */
370 	{ "Invalid", SMB_SDT_OPS(invalid), 0x9E, 0, 0 },	/* 0x9E 158 */
371 	{ "Invalid", SMB_SDT_OPS(invalid), 0x9F, 0, 0 },	/* 0x9F 159 */
372 	{ "SmbNtTransact", SMB_SDT_OPS(nt_transact),	/* 0xA0 160 */
373 	    0xA0, NT_LM_0_12, 0 },
374 	{ "SmbNtTransactSecondary",
375 	    SMB_SDT_OPS(nt_transact_secondary),			/* 0xA1 161 */
376 	    0xA1, NT_LM_0_12, 0 },
377 	{ "SmbNtCreateX", SMB_SDT_OPS(nt_create_andx),		/* 0xA2 162 */
378 	    0xA2, NT_LM_0_12, 0 },
379 	{ "Invalid", SMB_SDT_OPS(invalid), 0xA3, 0, 0 },	/* 0xA3 163 */
380 	{ "SmbNtCancel", SMB_SDT_OPS(nt_cancel),		/* 0xA4 164 */
381 	    0xA4, NT_LM_0_12, 0 },
382 	{ "SmbNtRename", SMB_SDT_OPS(nt_rename),		/* 0xA5 165 */
383 	    0xA5, NT_LM_0_12, 0 },
384 	{ "Invalid", SMB_SDT_OPS(invalid), 0xA6, 0, 0 },	/* 0xA6 166 */
385 	{ "Invalid", SMB_SDT_OPS(invalid), 0xA7, 0, 0 },	/* 0xA7 167 */
386 	{ "Invalid", SMB_SDT_OPS(invalid), 0xA8, 0, 0 },	/* 0xA8 168 */
387 	{ "Invalid", SMB_SDT_OPS(invalid), 0xA9, 0, 0 },	/* 0xA9 169 */
388 	{ "Invalid", SMB_SDT_OPS(invalid), 0xAA, 0, 0 },	/* 0xAA 170 */
389 	{ "Invalid", SMB_SDT_OPS(invalid), 0xAB, 0, 0 },	/* 0xAB 171 */
390 	{ "Invalid", SMB_SDT_OPS(invalid), 0xAC, 0, 0 },	/* 0xAC 172 */
391 	{ "Invalid", SMB_SDT_OPS(invalid), 0xAD, 0, 0 },	/* 0xAD 173 */
392 	{ "Invalid", SMB_SDT_OPS(invalid), 0xAE, 0, 0 },	/* 0xAE 174 */
393 	{ "Invalid", SMB_SDT_OPS(invalid), 0xAF, 0, 0 },	/* 0xAF 175 */
394 	{ "Invalid", SMB_SDT_OPS(invalid), 0xB0, 0, 0 },	/* 0xB0 176 */
395 	{ "Invalid", SMB_SDT_OPS(invalid), 0xB1, 0, 0 },	/* 0xB1 177 */
396 	{ "Invalid", SMB_SDT_OPS(invalid), 0xB2, 0, 0 },	/* 0xB2 178 */
397 	{ "Invalid", SMB_SDT_OPS(invalid), 0xB3, 0, 0 },	/* 0xB3 179 */
398 	{ "Invalid", SMB_SDT_OPS(invalid), 0xB4, 0, 0 },	/* 0xB4 180 */
399 	{ "Invalid", SMB_SDT_OPS(invalid), 0xB5, 0, 0 },	/* 0xB5 181 */
400 	{ "Invalid", SMB_SDT_OPS(invalid), 0xB6, 0, 0 },	/* 0xB6 182 */
401 	{ "Invalid", SMB_SDT_OPS(invalid), 0xB7, 0, 0 },	/* 0xB7 183 */
402 	{ "Invalid", SMB_SDT_OPS(invalid), 0xB8, 0, 0 },	/* 0xB8 184 */
403 	{ "Invalid", SMB_SDT_OPS(invalid), 0xB9, 0, 0 },	/* 0xB9 185 */
404 	{ "Invalid", SMB_SDT_OPS(invalid), 0xBA, 0, 0 },	/* 0xBA 186 */
405 	{ "Invalid", SMB_SDT_OPS(invalid), 0xBB, 0, 0 },	/* 0xBB 187 */
406 	{ "Invalid", SMB_SDT_OPS(invalid), 0xBC, 0, 0 },	/* 0xBC 188 */
407 	{ "Invalid", SMB_SDT_OPS(invalid), 0xBD, 0, 0 },	/* 0xBD 189 */
408 	{ "Invalid", SMB_SDT_OPS(invalid), 0xBE, 0, 0 },	/* 0xBE 190 */
409 	{ "Invalid", SMB_SDT_OPS(invalid), 0xBF, 0, 0 },	/* 0xBF 191 */
410 	{ "SmbOpenPrintFile", SMB_SDT_OPS(open_print_file),	/* 0xC0 192 */
411 	    0xC0, PC_NETWORK_PROGRAM_1_0, 0 },
412 	{ "SmbWritePrintFile", SMB_SDT_OPS(write_print_file),	/* 0xC1 193 */
413 	    0xC1, PC_NETWORK_PROGRAM_1_0, 0 },
414 	{ "SmbClosePrintFile", SMB_SDT_OPS(close_print_file),	/* 0xC2 194 */
415 	    0xC2, PC_NETWORK_PROGRAM_1_0, 0 },
416 	{ "SmbGetPrintQueue", SMB_SDT_OPS(get_print_queue),	/* 0xC3 195 */
417 	    0xC3, PC_NETWORK_PROGRAM_1_0, 0 },
418 	{ "Invalid", SMB_SDT_OPS(invalid), 0xC4, 0, 0 },	/* 0xC4 196 */
419 	{ "Invalid", SMB_SDT_OPS(invalid), 0xC5, 0, 0 },	/* 0xC5 197 */
420 	{ "Invalid", SMB_SDT_OPS(invalid), 0xC6, 0, 0 },	/* 0xC6 198 */
421 	{ "Invalid", SMB_SDT_OPS(invalid), 0xC7, 0, 0 },	/* 0xC7 199 */
422 	{ "Invalid", SMB_SDT_OPS(invalid), 0xC8, 0, 0 },	/* 0xC8 200 */
423 	{ "Invalid", SMB_SDT_OPS(invalid), 0xC9, 0, 0 },	/* 0xC9 201 */
424 	{ "Invalid", SMB_SDT_OPS(invalid), 0xCA, 0, 0 },	/* 0xCA 202 */
425 	{ "Invalid", SMB_SDT_OPS(invalid), 0xCB, 0, 0 },	/* 0xCB 203 */
426 	{ "Invalid", SMB_SDT_OPS(invalid), 0xCC, 0, 0 },	/* 0xCC 204 */
427 	{ "Invalid", SMB_SDT_OPS(invalid), 0xCD, 0, 0 },	/* 0xCD 205 */
428 	{ "Invalid", SMB_SDT_OPS(invalid), 0xCE, 0, 0 },	/* 0xCE 206 */
429 	{ "Invalid", SMB_SDT_OPS(invalid), 0xCF, 0, 0 },	/* 0xCF 207 */
430 	{ "Invalid", SMB_SDT_OPS(invalid), 0xD0, 0, 0 },	/* 0xD0 208 */
431 	{ "Invalid", SMB_SDT_OPS(invalid), 0xD1, 0, 0 },	/* 0xD1 209 */
432 	{ "Invalid", SMB_SDT_OPS(invalid), 0xD2, 0, 0 },	/* 0xD2 210 */
433 	{ "Invalid", SMB_SDT_OPS(invalid), 0xD3, 0, 0 },	/* 0xD3 211 */
434 	{ "Invalid", SMB_SDT_OPS(invalid), 0xD4, 0, 0 },	/* 0xD4 212 */
435 	{ "Invalid", SMB_SDT_OPS(invalid), 0xD5, 0, 0 },	/* 0xD5 213 */
436 	{ "Invalid", SMB_SDT_OPS(invalid), 0xD6, 0, 0 },	/* 0xD6 214 */
437 	{ "Invalid", SMB_SDT_OPS(invalid), 0xD7, 0, 0 },	/* 0xD7 215 */
438 	{ "Invalid", SMB_SDT_OPS(invalid), 0xD8, 0, 0 },	/* 0xD8 216 */
439 	{ "Invalid", SMB_SDT_OPS(invalid), 0xD9, 0, 0 },	/* 0xD9 217 */
440 	{ "Invalid", SMB_SDT_OPS(invalid), 0xDA, 0, 0 },	/* 0xDA 218 */
441 	{ "Invalid", SMB_SDT_OPS(invalid), 0xDB, 0, 0 },	/* 0xDB 219 */
442 	{ "Invalid", SMB_SDT_OPS(invalid), 0xDC, 0, 0 },	/* 0xDC 220 */
443 	{ "Invalid", SMB_SDT_OPS(invalid), 0xDD, 0, 0 },	/* 0xDD 221 */
444 	{ "Invalid", SMB_SDT_OPS(invalid), 0xDE, 0, 0 },	/* 0xDE 222 */
445 	{ "Invalid", SMB_SDT_OPS(invalid), 0xDF, 0, 0 },	/* 0xDF 223 */
446 	{ "Invalid", SMB_SDT_OPS(invalid), 0xE0, 0, 0 },	/* 0xE0 224 */
447 	{ "Invalid", SMB_SDT_OPS(invalid), 0xE1, 0, 0 },	/* 0xE1 225 */
448 	{ "Invalid", SMB_SDT_OPS(invalid), 0xE2, 0, 0 },	/* 0xE2 226 */
449 	{ "Invalid", SMB_SDT_OPS(invalid), 0xE3, 0, 0 },	/* 0xE3 227 */
450 	{ "Invalid", SMB_SDT_OPS(invalid), 0xE4, 0, 0 },	/* 0xE4 228 */
451 	{ "Invalid", SMB_SDT_OPS(invalid), 0xE5, 0, 0 },	/* 0xE5 229 */
452 	{ "Invalid", SMB_SDT_OPS(invalid), 0xE6, 0, 0 },	/* 0xE6 230 */
453 	{ "Invalid", SMB_SDT_OPS(invalid), 0xE7, 0, 0 },	/* 0xE7 231 */
454 	{ "Invalid", SMB_SDT_OPS(invalid), 0xE8, 0, 0 },	/* 0xE8 232 */
455 	{ "Invalid", SMB_SDT_OPS(invalid), 0xE9, 0, 0 },	/* 0xE9 233 */
456 	{ "Invalid", SMB_SDT_OPS(invalid), 0xEA, 0, 0 },	/* 0xEA 234 */
457 	{ "Invalid", SMB_SDT_OPS(invalid), 0xEB, 0, 0 },	/* 0xEB 235 */
458 	{ "Invalid", SMB_SDT_OPS(invalid), 0xEC, 0, 0 },	/* 0xEC 236 */
459 	{ "Invalid", SMB_SDT_OPS(invalid), 0xED, 0, 0 },	/* 0xED 237 */
460 	{ "Invalid", SMB_SDT_OPS(invalid), 0xEE, 0, 0 },	/* 0xEE 238 */
461 	{ "Invalid", SMB_SDT_OPS(invalid), 0xEF, 0, 0 },	/* 0xEF 239 */
462 	{ "Invalid", SMB_SDT_OPS(invalid), 0xF0, 0, 0 },	/* 0xF0 240 */
463 	{ "Invalid", SMB_SDT_OPS(invalid), 0xF1, 0, 0 },	/* 0xF1 241 */
464 	{ "Invalid", SMB_SDT_OPS(invalid), 0xF2, 0, 0 },	/* 0xF2 242 */
465 	{ "Invalid", SMB_SDT_OPS(invalid), 0xF3, 0, 0 },	/* 0xF3 243 */
466 	{ "Invalid", SMB_SDT_OPS(invalid), 0xF4, 0, 0 },	/* 0xF4 244 */
467 	{ "Invalid", SMB_SDT_OPS(invalid), 0xF5, 0, 0 },	/* 0xF5 245 */
468 	{ "Invalid", SMB_SDT_OPS(invalid), 0xF6, 0, 0 },	/* 0xF6 246 */
469 	{ "Invalid", SMB_SDT_OPS(invalid), 0xF7, 0, 0 },	/* 0xF7 247 */
470 	{ "Invalid", SMB_SDT_OPS(invalid), 0xF8, 0, 0 },	/* 0xF8 248 */
471 	{ "Invalid", SMB_SDT_OPS(invalid), 0xF9, 0, 0 },	/* 0xF9 249 */
472 	{ "Invalid", SMB_SDT_OPS(invalid), 0xFA, 0, 0 },	/* 0xFA 250 */
473 	{ "Invalid", SMB_SDT_OPS(invalid), 0xFB, 0, 0 },	/* 0xFB 251 */
474 	{ "Invalid", SMB_SDT_OPS(invalid), 0xFC, 0, 0 },	/* 0xFC 252 */
475 	{ "Invalid", SMB_SDT_OPS(invalid), 0xFD, 0, 0 },	/* 0xFD 253 */
476 	{ "Invalid", SMB_SDT_OPS(invalid), 0xFE, 0, 0 },	/* 0xFE 254 */
477 	{ "Invalid", SMB_SDT_OPS(invalid), 0xFF, 0, 0 }	/* 0xFF	255 */
478 };
479 
480 /*
481  * smbsr_cleanup
482  *
483  * If any user/tree/file is used by given request then
484  * the reference count for that resource has been incremented.
485  * This function decrements the reference count and close
486  * the resource if it's needed.
487  */
488 
489 void
smbsr_cleanup(smb_request_t * sr)490 smbsr_cleanup(smb_request_t *sr)
491 {
492 	ASSERT((sr->sr_state != SMB_REQ_STATE_CLEANED_UP) &&
493 	    (sr->sr_state != SMB_REQ_STATE_COMPLETED));
494 
495 	if (sr->r_xa) {
496 		if (sr->r_xa->xa_flags & SMB_XA_FLAG_COMPLETE)
497 			smb_xa_close(sr->r_xa);
498 		smb_xa_rele(sr->session, sr->r_xa);
499 		sr->r_xa = NULL;
500 	}
501 
502 	/*
503 	 * Mark this request so we know that we've already cleaned it up.
504 	 * A request should only get cleaned up once so multiple calls to
505 	 * smbsr_cleanup for the same request indicate a bug.
506 	 */
507 	mutex_enter(&sr->sr_mutex);
508 	if (sr->sr_state != SMB_REQ_STATE_CANCELLED)
509 		sr->sr_state = SMB_REQ_STATE_CLEANED_UP;
510 	mutex_exit(&sr->sr_mutex);
511 }
512 
513 int smb_cancel_in_reader = 1;
514 
515 /*
516  * This is the SMB1 handler for new smb requests, called from
517  * smb_session_reader after SMB negotiate is done.  For most SMB
518  * requests, we just enqueue them for the smb_session_worker to
519  * execute via the task queue, so they can block for resources
520  * without stopping the reader thread.  A few protocol messages
521  * are special cases and are handled directly here in the reader
522  * thread so they don't wait for taskq scheduling.  Later, a few
523  * MORE things could be handled here, such as REPLY messages
524  * (oplock break reply) and things like "NT_cancel".
525  *
526  * This function must either enqueue the new request for
527  * execution via the task queue, or execute it directly
528  * and then free it.  If this returns non-zero, the caller
529  * will drop the session.
530  */
531 int
smb1sr_newrq(smb_request_t * sr)532 smb1sr_newrq(smb_request_t *sr)
533 {
534 	uint16_t pid_hi, pid_lo;
535 	int rc, save_offset;
536 
537 	/*
538 	 * Decode the SMB header now (peek) so that
539 	 * SMB_COM_NT_CANCEL can find this SR.
540 	 */
541 	save_offset = sr->command.chain_offset;
542 	rc = smb_mbc_decodef(&sr->command, SMB_HEADER_ED_FMT,
543 	    &sr->smb_com,
544 	    &sr->smb_rcls,
545 	    &sr->smb_reh,
546 	    &sr->smb_err,
547 	    &sr->smb_flg,
548 	    &sr->smb_flg2,
549 	    &pid_hi,
550 	    sr->smb_sig,
551 	    &sr->smb_tid,
552 	    &pid_lo,
553 	    &sr->smb_uid,
554 	    &sr->smb_mid);
555 	sr->command.chain_offset = save_offset;
556 	if (rc != 0) {
557 		/* Failed decoding the header. Drop 'em. */
558 		smb_request_free(sr);
559 		return (EPROTO);
560 	}
561 	sr->smb_pid = (pid_hi << 16) | pid_lo;
562 
563 	if (sr->smb_com == SMB_COM_NT_CANCEL) {
564 		if (sr->session->signing.flags & SMB_SIGNING_ENABLED) {
565 			sr->session->signing.seqnum++;
566 			sr->sr_seqnum = sr->session->signing.seqnum + 1;
567 			sr->reply_seqnum = 0;
568 		}
569 
570 		/*
571 		 * Normally execute cancel requests immediately,
572 		 * (here in the reader thread) so they won't wait
573 		 * for other commands already in the task queue.
574 		 * Disable this via smb_cancel_in_reader=0 for
575 		 * testing or diagnostic efforts, in which case
576 		 * cancel runs via taskq_dispatch.
577 		 */
578 		if (smb_cancel_in_reader != 0) {
579 			rc = smb1sr_newrq_cancel(sr);
580 			smb_request_free(sr);
581 			return (rc);
582 		}
583 	} else {
584 		/* not NT cancel */
585 		if (sr->session->signing.flags & SMB_SIGNING_ENABLED) {
586 			sr->session->signing.seqnum += 2;
587 			sr->sr_seqnum = sr->session->signing.seqnum;
588 			sr->reply_seqnum = sr->sr_seqnum + 1;
589 		}
590 	}
591 
592 	/*
593 	 * Submit the request to the task queue, which calls
594 	 * smb1_tq_work when the workload permits.
595 	 */
596 	sr->sr_time_submitted = gethrtime();
597 	sr->sr_state = SMB_REQ_STATE_SUBMITTED;
598 	smb_srqueue_waitq_enter(sr->session->s_srqueue);
599 	(void) taskq_dispatch(sr->sr_server->sv_worker_pool,
600 	    smb1_tq_work, sr, TQ_SLEEP);
601 
602 	return (0);
603 }
604 
605 static void
smb1_tq_work(void * arg)606 smb1_tq_work(void *arg)
607 {
608 	smb_request_t	*sr;
609 	smb_srqueue_t	*srq;
610 
611 	sr = (smb_request_t *)arg;
612 	SMB_REQ_VALID(sr);
613 
614 	srq = sr->session->s_srqueue;
615 	smb_srqueue_waitq_to_runq(srq);
616 	sr->sr_worker = curthread;
617 	sr->sr_time_active = gethrtime();
618 
619 	/*
620 	 * Always dispatch to the work function, because cancelled
621 	 * requests need an error reply (NT_STATUS_CANCELLED).
622 	 */
623 	mutex_enter(&sr->sr_mutex);
624 	if (sr->sr_state == SMB_REQ_STATE_SUBMITTED)
625 		sr->sr_state = SMB_REQ_STATE_ACTIVE;
626 	mutex_exit(&sr->sr_mutex);
627 
628 	smb1sr_work(sr);
629 
630 	smb_srqueue_runq_exit(srq);
631 }
632 
633 /*
634  * smb1sr_work
635  *
636  * In most cases, this should free the request before return.
637  * Exceptions are when a dispatch function returns SDRC_SR_KEPT.
638  */
639 void
smb1sr_work(struct smb_request * sr)640 smb1sr_work(struct smb_request *sr)
641 {
642 	smb_sdrc_t		sdrc;
643 	const smb_disp_entry_t	*sdd;
644 	smb_disp_stats_t	*sds;
645 	boolean_t		disconnect = B_FALSE;
646 	smb_session_t		*session;
647 	smb_server_t		*server;
648 	uint32_t		byte_count;
649 	uint32_t		max_bytes;
650 	uint16_t		pid_hi, pid_lo;
651 
652 	session = sr->session;
653 	server = session->s_server;
654 
655 	ASSERT(sr->tid_tree == 0);
656 	ASSERT(sr->uid_user == 0);
657 	ASSERT(sr->fid_ofile == 0);
658 	sr->smb_fid = (uint16_t)-1;
659 
660 	/* temporary until we identify a user */
661 	sr->user_cr = zone_kcred();
662 	sr->orig_request_hdr = sr->command.chain_offset;
663 
664 	/*
665 	 * Decode the SMB header.
666 	 */
667 	if (smb_mbc_decodef(&sr->command, SMB_HEADER_ED_FMT,
668 	    &sr->smb_com,
669 	    &sr->smb_rcls,
670 	    &sr->smb_reh,
671 	    &sr->smb_err,
672 	    &sr->smb_flg,
673 	    &sr->smb_flg2,
674 	    &pid_hi,
675 	    sr->smb_sig,
676 	    &sr->smb_tid,
677 	    &pid_lo,
678 	    &sr->smb_uid,
679 	    &sr->smb_mid) != 0) {
680 		disconnect = B_TRUE;
681 		goto drop_connection;
682 	}
683 	sr->smb_pid = (pid_hi << 16) | pid_lo;
684 
685 	/*
686 	 * The reply "header" is filled in now even though it will,
687 	 * most likely, be rewritten under reply_ready below.  We
688 	 * could reserve the space but this is convenient in case
689 	 * the dialect dispatcher has to send a special reply (like
690 	 * TRANSACT).
691 	 *
692 	 * Ensure that the 32-bit error code flag is turned off.
693 	 * Clients seem to set it in transact requests and they may
694 	 * get confused if we return success or a 16-bit SMB code.
695 	 */
696 	sr->smb_rcls = 0;
697 	sr->smb_reh = 0;
698 	sr->smb_err = 0;
699 	sr->smb_flg2 &= ~SMB_FLAGS2_NT_STATUS;
700 
701 	(void) smb_mbc_encodef(&sr->reply, SMB_HEADER_ED_FMT,
702 	    sr->smb_com,
703 	    sr->smb_rcls,
704 	    sr->smb_reh,
705 	    sr->smb_err,
706 	    sr->smb_flg,
707 	    sr->smb_flg2,
708 	    pid_hi,
709 	    sr->smb_sig,
710 	    sr->smb_tid,
711 	    pid_lo,
712 	    sr->smb_uid,
713 	    sr->smb_mid);
714 	sr->first_smb_com = sr->smb_com;
715 
716 	/* Need this for early goto report_error cases. */
717 	sr->cur_reply_offset = sr->reply.chain_offset;
718 
719 	if ((session->signing.flags & SMB_SIGNING_CHECK) != 0) {
720 		if ((sr->smb_flg2 & SMB_FLAGS2_SMB_SECURITY_SIGNATURE) == 0 ||
721 		    smb_sign_check_request(sr) != 0) {
722 			smbsr_error(sr, NT_STATUS_ACCESS_DENIED,
723 			    ERRDOS, ERROR_ACCESS_DENIED);
724 			disconnect = B_TRUE;
725 			goto report_error;
726 		}
727 	}
728 
729 andx_more:
730 	sdd = &smb_disp_table[sr->smb_com];
731 	ASSERT(sdd->sdt_function);
732 	sds = &server->sv_disp_stats1[sr->smb_com];
733 
734 	if (smb_mbc_decodef(&sr->command, "b", &sr->smb_wct) != 0) {
735 		disconnect = B_TRUE;
736 		goto report_error;
737 	}
738 
739 	(void) MBC_SHADOW_CHAIN(&sr->smb_vwv, &sr->command,
740 	    sr->command.chain_offset, sr->smb_wct * 2);
741 
742 	if (smb_mbc_decodef(&sr->command, "#.w", sr->smb_wct*2, &sr->smb_bcc)) {
743 		disconnect = B_TRUE;
744 		goto report_error;
745 	}
746 
747 	atomic_add_64(&sds->sdt_rxb,
748 	    (int64_t)(sr->smb_wct * 2 + sr->smb_bcc + 1));
749 	sr->sr_txb = sr->reply.chain_offset;
750 
751 	/*
752 	 * Ignore smb_bcc if CAP_LARGE_READX/CAP_LARGE_WRITEX
753 	 * and this is SmbReadX/SmbWriteX since this enables
754 	 * large reads/write and bcc is only 16-bits.
755 	 */
756 	max_bytes = sr->command.max_bytes - sr->command.chain_offset;
757 	if (sr->smb_com == SMB_COM_WRITE_ANDX) {
758 		/* Allow > BCC */
759 		byte_count = max_bytes;
760 	} else if (max_bytes < (uint32_t)sr->smb_bcc) {
761 		/* BCC is bogus.  Will fail later. */
762 		byte_count = max_bytes;
763 	} else {
764 		/* ordinary case */
765 		byte_count = (uint32_t)sr->smb_bcc;
766 	}
767 
768 	(void) MBC_SHADOW_CHAIN(&sr->smb_data, &sr->command,
769 	    sr->command.chain_offset, byte_count);
770 
771 	sr->command.chain_offset += byte_count;
772 	if (sr->command.chain_offset > sr->command.max_bytes) {
773 		disconnect = B_TRUE;
774 		goto report_error;
775 	}
776 
777 	/* Store pointers for later */
778 	sr->cur_reply_offset = sr->reply.chain_offset;
779 
780 	if (is_andx_com(sr->smb_com)) {
781 		/* Peek ahead and don't disturb vwv */
782 		if (smb_mbc_peek(&sr->smb_vwv, sr->smb_vwv.chain_offset, "b.w",
783 		    &sr->andx_com, &sr->andx_off) < 0) {
784 			disconnect = B_TRUE;
785 			goto report_error;
786 		}
787 	} else {
788 		sr->andx_com = (unsigned char)-1;
789 	}
790 
791 	mutex_enter(&sr->sr_mutex);
792 	switch (sr->sr_state) {
793 	case SMB_REQ_STATE_ACTIVE:
794 		break;
795 	case SMB_REQ_STATE_CLEANED_UP:
796 		sr->sr_state = SMB_REQ_STATE_ACTIVE;
797 		break;
798 	case SMB_REQ_STATE_CANCELLED:
799 		/*
800 		 * Keep cancelled.  Handlers that might block will
801 		 * check the state and return NT_STATUS_CANCELLED.
802 		 */
803 		break;
804 	default:
805 		ASSERT(0);
806 		break;
807 	}
808 	mutex_exit(&sr->sr_mutex);
809 
810 	/*
811 	 * Setup UID and TID information (if required). Both functions
812 	 * will set the sr credentials. In domain mode, the user and
813 	 * tree credentials should be the same. In share mode, the
814 	 * tree credentials (defined in the share definition) should
815 	 * override the user credentials.
816 	 */
817 	if (!(sdd->sdt_flags & SDDF_SUPPRESS_UID) && (sr->uid_user == NULL)) {
818 		sr->uid_user = smb_session_lookup_uid(session, sr->smb_uid);
819 		if (sr->uid_user == NULL) {
820 			smbsr_error(sr, 0, ERRSRV, ERRbaduid);
821 			smbsr_cleanup(sr);
822 			goto report_error;
823 		}
824 
825 		sr->user_cr = smb_user_getcred(sr->uid_user);
826 	}
827 	if (!(sdd->sdt_flags & SDDF_SUPPRESS_TID) && (sr->tid_tree == NULL)) {
828 		sr->tid_tree = smb_session_lookup_tree(session, sr->smb_tid);
829 		if (sr->tid_tree == NULL) {
830 			smbsr_error(sr, 0, ERRSRV, ERRinvnid);
831 			smbsr_cleanup(sr);
832 			goto report_error;
833 		}
834 	}
835 
836 	sr->sr_time_start = gethrtime();
837 	if ((sdrc = (*sdd->sdt_pre_op)(sr)) == SDRC_SUCCESS)
838 		sdrc = (*sdd->sdt_function)(sr);
839 
840 	if (sdrc != SDRC_SR_KEPT) {
841 		(*sdd->sdt_post_op)(sr);
842 		smbsr_cleanup(sr);
843 	}
844 
845 	smb_server_inc_req(server);
846 	smb_latency_add_sample(&sds->sdt_lat, gethrtime() - sr->sr_time_start);
847 
848 	atomic_add_64(&sds->sdt_txb,
849 	    (int64_t)(sr->reply.chain_offset - sr->sr_txb));
850 
851 	switch (sdrc) {
852 	case SDRC_SUCCESS:
853 		break;
854 
855 	case SDRC_DROP_VC:
856 		disconnect = B_TRUE;
857 		goto drop_connection;
858 
859 	case SDRC_NO_REPLY:
860 		/* will free sr */
861 		goto out;
862 
863 	case SDRC_SR_KEPT:
864 		/* Do NOT free sr */
865 		sr = NULL;
866 		goto out;
867 
868 	case SDRC_ERROR:
869 		goto report_error;
870 
871 	case SDRC_NOT_IMPLEMENTED:
872 	default:
873 		smbsr_error(sr, 0, ERRDOS, ERRbadfunc);
874 		goto report_error;
875 	}
876 
877 	/*
878 	 * If there's no AndX command, we're done.
879 	 */
880 	if (sr->andx_com == 0xff)
881 		goto reply_ready;
882 
883 	/*
884 	 * Otherwise, we have to back-patch the AndXCommand and AndXOffset
885 	 * and continue processing.
886 	 */
887 	sr->andx_prev_wct = sr->cur_reply_offset;
888 	(void) smb_mbc_poke(&sr->reply, sr->andx_prev_wct + 1, "b.w",
889 	    sr->andx_com, MBC_LENGTH(&sr->reply));
890 
891 	sr->command.chain_offset = sr->orig_request_hdr + sr->andx_off;
892 	sr->smb_com = sr->andx_com;
893 	goto andx_more;
894 
895 report_error:
896 	sr->reply.chain_offset = sr->cur_reply_offset;
897 	(void) smb_mbc_encodef(&sr->reply, "bw", 0, 0);
898 
899 	sr->smb_wct = 0;
900 	sr->smb_bcc = 0;
901 
902 	if (sr->smb_rcls == 0 && sr->smb_reh == 0 && sr->smb_err == 0)
903 		smbsr_error(sr, 0, ERRSRV, ERRerror);
904 
905 reply_ready:
906 	smbsr_send_reply(sr);
907 
908 drop_connection:
909 	if (disconnect)
910 		smb_session_disconnect(session);
911 
912 out:
913 	if (sr != NULL) {
914 		mutex_enter(&sr->sr_mutex);
915 		sr->sr_state = SMB_REQ_STATE_COMPLETED;
916 		mutex_exit(&sr->sr_mutex);
917 		smb_request_free(sr);
918 	}
919 }
920 
921 int
smbsr_encode_empty_result(struct smb_request * sr)922 smbsr_encode_empty_result(struct smb_request *sr)
923 {
924 	return (smbsr_encode_result(sr, 0, 0, "bw", 0, 0));
925 }
926 
927 int
smbsr_encode_result(struct smb_request * sr,int wct,int bcc,const char * fmt,...)928 smbsr_encode_result(struct smb_request *sr, int wct, int bcc,
929     const char *fmt, ...)
930 {
931 	va_list ap;
932 
933 	if (MBC_LENGTH(&sr->reply) != sr->cur_reply_offset)
934 		return (-1);
935 
936 	va_start(ap, fmt);
937 	(void) smb_mbc_vencodef(&sr->reply, fmt, ap);
938 	va_end(ap);
939 
940 	sr->smb_wct = (unsigned char)wct;
941 	sr->smb_bcc = (uint16_t)bcc;
942 
943 	if (smbsr_check_result(sr, wct, bcc) != 0)
944 		return (-1);
945 
946 	return (0);
947 }
948 
949 static int
smbsr_check_result(struct smb_request * sr,int wct,int bcc)950 smbsr_check_result(struct smb_request *sr, int wct, int bcc)
951 {
952 	int		offset = sr->cur_reply_offset;
953 	int		total_bytes;
954 	unsigned char	temp, temp1;
955 	struct mbuf	*m;
956 
957 	total_bytes = 0;
958 	m = sr->reply.chain;
959 	while (m != 0) {
960 		total_bytes += m->m_len;
961 		m = m->m_next;
962 	}
963 
964 	if ((offset + 3) > total_bytes)
965 		return (-1);
966 
967 	(void) smb_mbc_peek(&sr->reply, offset, "b", &temp);
968 	if (temp != wct)
969 		return (-1);
970 
971 	if ((offset + (wct * 2 + 1)) > total_bytes)
972 		return (-1);
973 
974 	/* reply wct & vwv seem ok, consider data now */
975 	offset += wct * 2 + 1;
976 
977 	if ((offset + 2) > total_bytes)
978 		return (-1);
979 
980 	(void) smb_mbc_peek(&sr->reply, offset, "bb", &temp, &temp1);
981 	if (bcc == VAR_BCC) {
982 		if ((temp != 0xFF) || (temp1 != 0xFF)) {
983 			return (-1);
984 		} else {
985 			bcc = (total_bytes - offset) - 2;
986 			(void) smb_mbc_poke(&sr->reply, offset, "bb",
987 			    bcc, bcc >> 8);
988 		}
989 	} else {
990 		if ((temp != (bcc&0xFF)) || (temp1 != ((bcc>>8)&0xFF)))
991 			return (-1);
992 	}
993 
994 	offset += bcc + 2;
995 
996 	if (offset != total_bytes)
997 		return (-1);
998 
999 	sr->smb_wct = (unsigned char)wct;
1000 	sr->smb_bcc = (uint16_t)bcc;
1001 	return (0);
1002 }
1003 
1004 int
smbsr_decode_vwv(struct smb_request * sr,const char * fmt,...)1005 smbsr_decode_vwv(struct smb_request *sr, const char *fmt, ...)
1006 {
1007 	int rc;
1008 	va_list ap;
1009 
1010 	va_start(ap, fmt);
1011 	rc = smb_mbc_vdecodef(&sr->smb_vwv, fmt, ap);
1012 	va_end(ap);
1013 
1014 	if (rc)
1015 		smbsr_error(sr, 0, ERRSRV, ERRerror);
1016 	return (rc);
1017 }
1018 
1019 int
smbsr_decode_data(struct smb_request * sr,const char * fmt,...)1020 smbsr_decode_data(struct smb_request *sr, const char *fmt, ...)
1021 {
1022 	int rc;
1023 	va_list ap;
1024 
1025 	va_start(ap, fmt);
1026 	rc = smb_mbc_vdecodef(&sr->smb_data, fmt, ap);
1027 	va_end(ap);
1028 
1029 	if (rc)
1030 		smbsr_error(sr, 0, ERRSRV, ERRerror);
1031 	return (rc);
1032 }
1033 
1034 boolean_t
smbsr_decode_data_avail(smb_request_t * sr)1035 smbsr_decode_data_avail(smb_request_t *sr)
1036 {
1037 	return (sr->smb_data.chain_offset < sr->smb_data.max_bytes);
1038 }
1039 
1040 void
smbsr_send_reply(smb_request_t * sr)1041 smbsr_send_reply(smb_request_t *sr)
1042 {
1043 	uint16_t	pid_hi, pid_lo;
1044 
1045 	if (SMB_TREE_IS_CASEINSENSITIVE(sr))
1046 		sr->smb_flg |= SMB_FLAGS_CASE_INSENSITIVE;
1047 	else
1048 		sr->smb_flg &= ~SMB_FLAGS_CASE_INSENSITIVE;
1049 	pid_hi = sr->smb_pid >> 16;
1050 	pid_lo = (uint16_t)sr->smb_pid;
1051 
1052 	(void) smb_mbc_poke(&sr->reply, 0, SMB_HEADER_ED_FMT,
1053 	    sr->first_smb_com,
1054 	    sr->smb_rcls,
1055 	    sr->smb_reh,
1056 	    sr->smb_err,
1057 	    sr->smb_flg | SMB_FLAGS_REPLY,
1058 	    sr->smb_flg2,
1059 	    pid_hi,
1060 	    sr->smb_sig,
1061 	    sr->smb_tid,
1062 	    pid_lo,
1063 	    sr->smb_uid,
1064 	    sr->smb_mid);
1065 
1066 	if (sr->session->signing.flags & SMB_SIGNING_ENABLED)
1067 		smb_sign_reply(sr, NULL);
1068 
1069 	if (smb_session_send(sr->session, 0, &sr->reply) == 0)
1070 		sr->reply.chain = 0;
1071 }
1072 
1073 void
smbsr_map_errno(int errnum,smb_error_t * err)1074 smbsr_map_errno(int errnum, smb_error_t *err)
1075 {
1076 	uint32_t status;
1077 	uint16_t doserr;
1078 
1079 	status = smb_errno2status(errnum);
1080 	doserr = smb_status2doserr(status);
1081 
1082 	err->status  = status;
1083 	err->errcls  = ERRDOS;
1084 	err->errcode = doserr;
1085 }
1086 
1087 void
smbsr_errno(struct smb_request * sr,int errnum)1088 smbsr_errno(struct smb_request *sr, int errnum)
1089 {
1090 	smbsr_map_errno(errnum, &sr->smb_error);
1091 	smbsr_set_error(sr, &sr->smb_error);
1092 }
1093 
1094 /*
1095  * Report a request processing status (error or warning).
1096  */
1097 void
smbsr_status(smb_request_t * sr,DWORD status,uint16_t errcls,uint16_t errcode)1098 smbsr_status(smb_request_t *sr, DWORD status, uint16_t errcls, uint16_t errcode)
1099 {
1100 
1101 	sr->smb_error.status   = status;
1102 
1103 	/*
1104 	 * This function is SMB1 specific.  While adding SMB2 support,
1105 	 * calls to this function have been removed from common code.
1106 	 * In case we missed any, check for SMB2 callers here, and
1107 	 * vector into a wrapper function that we can watch for...
1108 	 * (and track down with dtrace:)
1109 	 */
1110 	if (sr->session->dialect >= SMB_VERS_2_BASE) {
1111 		smbsr_status_smb2(sr, status);
1112 		return;
1113 	}
1114 
1115 	if (status != 0 && errcls == 0 && errcode == 0) {
1116 		errcls = ERRDOS;
1117 		errcode = smb_status2doserr(status);
1118 	}
1119 
1120 	sr->smb_error.errcls   = errcls;
1121 	sr->smb_error.errcode  = errcode;
1122 
1123 	smbsr_set_error(sr, &sr->smb_error);
1124 }
1125 
1126 /*
1127  * Setup a request processing error.  This function can be used to
1128  * report 32-bit status codes or DOS errors.  Set the status code
1129  * to 0 (NT_STATUS_SUCCESS) to explicitly report a DOS error,
1130  * regardless of the client capabilities.
1131  *
1132  * If status is non-zero and the client supports 32-bit status
1133  * codes, report the status.  Otherwise, report the DOS error.
1134  */
1135 void
smbsr_set_error(smb_request_t * sr,smb_error_t * err)1136 smbsr_set_error(smb_request_t *sr, smb_error_t *err)
1137 {
1138 	uint32_t status;
1139 	uint32_t capabilities;
1140 
1141 	ASSERT(sr);
1142 	ASSERT(err);
1143 
1144 	status = err->status;
1145 	capabilities = sr->session->capabilities;
1146 
1147 	if ((err->errcls == 0) && (err->errcode == 0)) {
1148 		capabilities |= CAP_STATUS32;
1149 		if (status == 0)
1150 			status = NT_STATUS_INTERNAL_ERROR;
1151 	}
1152 
1153 	if ((capabilities & CAP_STATUS32) && (status != 0)) {
1154 		sr->smb_rcls = status & 0xff;
1155 		sr->smb_reh = (status >> 8) & 0xff;
1156 		sr->smb_err  = status >> 16;
1157 		sr->smb_flg2 |= SMB_FLAGS2_NT_STATUS;
1158 	} else {
1159 		if ((err->errcls == 0) || (err->errcode == 0)) {
1160 			sr->smb_rcls = ERRSRV;
1161 			sr->smb_err  = ERRerror;
1162 		} else {
1163 			sr->smb_rcls = (uint8_t)err->errcls;
1164 			sr->smb_err  = (uint16_t)err->errcode;
1165 		}
1166 	}
1167 }
1168 
1169 smb_xa_t *
smbsr_lookup_xa(smb_request_t * sr)1170 smbsr_lookup_xa(smb_request_t *sr)
1171 {
1172 	ASSERT(sr->r_xa == 0);
1173 
1174 	sr->r_xa = smb_xa_find(sr->session, sr->smb_pid, sr->smb_mid);
1175 	return (sr->r_xa);
1176 }
1177 
1178 void
smbsr_release_file(smb_request_t * sr)1179 smbsr_release_file(smb_request_t *sr)
1180 {
1181 	smb_ofile_t	*of = sr->fid_ofile;
1182 
1183 	sr->fid_ofile = NULL;
1184 	(void) smb_ofile_release(of);
1185 }
1186 
1187 void
smbsr_lookup_file(smb_request_t * sr)1188 smbsr_lookup_file(smb_request_t *sr)
1189 {
1190 	if (sr->fid_ofile == NULL)
1191 		sr->fid_ofile = smb_ofile_lookup_by_fid(sr, sr->smb_fid);
1192 }
1193 
1194 static int
is_andx_com(unsigned char com)1195 is_andx_com(unsigned char com)
1196 {
1197 	switch (com) {
1198 	case SMB_COM_LOCKING_ANDX:
1199 	case SMB_COM_OPEN_ANDX:
1200 	case SMB_COM_READ_ANDX:
1201 	case SMB_COM_WRITE_ANDX:
1202 	case SMB_COM_SESSION_SETUP_ANDX:
1203 	case SMB_COM_LOGOFF_ANDX:
1204 	case SMB_COM_TREE_CONNECT_ANDX:
1205 	case SMB_COM_NT_CREATE_ANDX:
1206 		return (1);
1207 	}
1208 	return (0);
1209 }
1210 
1211 /*
1212  * Invalid command stubs.
1213  *
1214  * The Read/Write Block Multiplexed (mpx) protocol is used to maximize
1215  * performance when reading/writing a large block of data: it can be
1216  * used in parallel with other client/server operations.  The mpx sub-
1217  * protocol is not supported because we support only connection oriented
1218  * transports and NT supports mpx only over connectionless transports.
1219  */
1220 smb_sdrc_t
smb_pre_invalid(smb_request_t * sr)1221 smb_pre_invalid(smb_request_t *sr)
1222 {
1223 	DTRACE_SMB_START(op__Invalid, smb_request_t *, sr);
1224 	return (SDRC_SUCCESS);
1225 }
1226 
1227 void
smb_post_invalid(smb_request_t * sr)1228 smb_post_invalid(smb_request_t *sr)
1229 {
1230 	DTRACE_SMB_DONE(op__Invalid, smb_request_t *, sr);
1231 }
1232 
1233 smb_sdrc_t
smb_com_invalid(smb_request_t * sr)1234 smb_com_invalid(smb_request_t *sr)
1235 {
1236 	smb_sdrc_t sdrc;
1237 
1238 	switch (sr->smb_com) {
1239 	case SMB_COM_WRITE_COMPLETE:
1240 		smbsr_error(sr, 0, ERRSRV, ERRerror);
1241 		sdrc = SDRC_ERROR;
1242 		break;
1243 
1244 	default:
1245 		smbsr_error(sr, NT_STATUS_NOT_IMPLEMENTED,
1246 		    ERRDOS, ERROR_INVALID_FUNCTION);
1247 		sdrc = SDRC_NOT_IMPLEMENTED;
1248 		break;
1249 	}
1250 
1251 	return (sdrc);
1252 }
1253 
1254 /*
1255  * smb_dispatch_stats_init
1256  *
1257  * Initializes dispatch statistics.
1258  */
1259 void
smb_dispatch_stats_init(smb_server_t * sv)1260 smb_dispatch_stats_init(smb_server_t *sv)
1261 {
1262 	smb_disp_stats_t *sds = sv->sv_disp_stats1;
1263 	smb_kstat_req_t *ksr;
1264 	int		i;
1265 
1266 	ksr = ((smbsrv_kstats_t *)sv->sv_ksp->ks_data)->ks_reqs1;
1267 
1268 	for (i = 0; i < SMB_COM_NUM; i++, ksr++) {
1269 		smb_latency_init(&sds[i].sdt_lat);
1270 		(void) strlcpy(ksr->kr_name, smb_disp_table[i].sdt_name,
1271 		    sizeof (ksr->kr_name));
1272 	}
1273 }
1274 
1275 /*
1276  * smb_dispatch_stats_fini
1277  *
1278  * Frees and destroyes the resources used for statistics.
1279  */
1280 void
smb_dispatch_stats_fini(smb_server_t * sv)1281 smb_dispatch_stats_fini(smb_server_t *sv)
1282 {
1283 	smb_disp_stats_t *sds = sv->sv_disp_stats1;
1284 	int	i;
1285 
1286 	for (i = 0; i < SMB_COM_NUM; i++)
1287 		smb_latency_destroy(&sds[i].sdt_lat);
1288 }
1289 
1290 void
smb_dispatch_stats_update(smb_server_t * sv,smb_kstat_req_t * ksr,int first,int nreq)1291 smb_dispatch_stats_update(smb_server_t *sv,
1292     smb_kstat_req_t *ksr, int first, int nreq)
1293 {
1294 	smb_disp_stats_t *sds = sv->sv_disp_stats1;
1295 	int	i;
1296 	int	last;
1297 
1298 	last = first + nreq - 1;
1299 
1300 	if ((first < SMB_COM_NUM) && (last < SMB_COM_NUM))  {
1301 		for (i = first; i <= last; i++, ksr++) {
1302 			ksr->kr_rxb = sds[i].sdt_rxb;
1303 			ksr->kr_txb = sds[i].sdt_txb;
1304 			mutex_enter(&sds[i].sdt_lat.ly_mutex);
1305 			ksr->kr_nreq = sds[i].sdt_lat.ly_a_nreq;
1306 			ksr->kr_sum = sds[i].sdt_lat.ly_a_sum;
1307 			ksr->kr_a_mean = sds[i].sdt_lat.ly_a_mean;
1308 			ksr->kr_a_stddev =
1309 			    sds[i].sdt_lat.ly_a_stddev;
1310 			ksr->kr_d_mean = sds[i].sdt_lat.ly_d_mean;
1311 			ksr->kr_d_stddev =
1312 			    sds[i].sdt_lat.ly_d_stddev;
1313 			sds[i].sdt_lat.ly_d_mean = 0;
1314 			sds[i].sdt_lat.ly_d_nreq = 0;
1315 			sds[i].sdt_lat.ly_d_stddev = 0;
1316 			sds[i].sdt_lat.ly_d_sum = 0;
1317 			mutex_exit(&sds[i].sdt_lat.ly_mutex);
1318 		}
1319 	}
1320 }
1321