Commit | Line | Data |
---|---|---|
ec2e4523 PS |
1 | /* |
2 | * fs/cifs/smb2pdu.c | |
3 | * | |
2b80d049 | 4 | * Copyright (C) International Business Machines Corp., 2009, 2013 |
ec2e4523 PS |
5 | * Etersoft, 2012 |
6 | * Author(s): Steve French (sfrench@us.ibm.com) | |
7 | * Pavel Shilovsky (pshilovsky@samba.org) 2012 | |
8 | * | |
9 | * Contains the routines for constructing the SMB2 PDUs themselves | |
10 | * | |
11 | * This library is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU Lesser General Public License as published | |
13 | * by the Free Software Foundation; either version 2.1 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This library is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
19 | * the GNU Lesser General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU Lesser General Public License | |
22 | * along with this library; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
24 | */ | |
25 | ||
26 | /* SMB2 PDU handling routines here - except for leftovers (eg session setup) */ | |
27 | /* Note that there are handle based routines which must be */ | |
28 | /* treated slightly differently for reconnection purposes since we never */ | |
29 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
30 | ||
31 | #include <linux/fs.h> | |
32 | #include <linux/kernel.h> | |
33 | #include <linux/vfs.h> | |
09a4707e | 34 | #include <linux/task_io_accounting_ops.h> |
ec2e4523 | 35 | #include <linux/uaccess.h> |
c6e970a0 | 36 | #include <linux/uuid.h> |
33319141 | 37 | #include <linux/pagemap.h> |
ec2e4523 PS |
38 | #include <linux/xattr.h> |
39 | #include "smb2pdu.h" | |
40 | #include "cifsglob.h" | |
41 | #include "cifsacl.h" | |
42 | #include "cifsproto.h" | |
43 | #include "smb2proto.h" | |
44 | #include "cifs_unicode.h" | |
45 | #include "cifs_debug.h" | |
46 | #include "ntlmssp.h" | |
47 | #include "smb2status.h" | |
09a4707e | 48 | #include "smb2glob.h" |
d324f08d | 49 | #include "cifspdu.h" |
ceb1b0b9 | 50 | #include "cifs_spnego.h" |
db223a59 | 51 | #include "smbdirect.h" |
eccb4422 | 52 | #include "trace.h" |
a3a53b76 PA |
53 | #ifdef CONFIG_CIFS_DFS_UPCALL |
54 | #include "dfs_cache.h" | |
55 | #endif | |
ec2e4523 PS |
56 | |
57 | /* | |
58 | * The following table defines the expected "StructureSize" of SMB2 requests | |
59 | * in order by SMB2 command. This is similar to "wct" in SMB/CIFS requests. | |
60 | * | |
61 | * Note that commands are defined in smb2pdu.h in le16 but the array below is | |
62 | * indexed by command in host byte order. | |
63 | */ | |
64 | static const int smb2_req_struct_sizes[NUMBER_OF_SMB2_COMMANDS] = { | |
65 | /* SMB2_NEGOTIATE */ 36, | |
66 | /* SMB2_SESSION_SETUP */ 25, | |
67 | /* SMB2_LOGOFF */ 4, | |
68 | /* SMB2_TREE_CONNECT */ 9, | |
69 | /* SMB2_TREE_DISCONNECT */ 4, | |
70 | /* SMB2_CREATE */ 57, | |
71 | /* SMB2_CLOSE */ 24, | |
72 | /* SMB2_FLUSH */ 24, | |
73 | /* SMB2_READ */ 49, | |
74 | /* SMB2_WRITE */ 49, | |
75 | /* SMB2_LOCK */ 48, | |
76 | /* SMB2_IOCTL */ 57, | |
77 | /* SMB2_CANCEL */ 4, | |
78 | /* SMB2_ECHO */ 4, | |
79 | /* SMB2_QUERY_DIRECTORY */ 33, | |
80 | /* SMB2_CHANGE_NOTIFY */ 32, | |
81 | /* SMB2_QUERY_INFO */ 41, | |
82 | /* SMB2_SET_INFO */ 33, | |
83 | /* SMB2_OPLOCK_BREAK */ 24 /* BB this is 36 for LEASE_BREAK variant */ | |
84 | }; | |
85 | ||
730928c8 | 86 | int smb3_encryption_required(const struct cifs_tcon *tcon) |
7fb8986e | 87 | { |
edb16135 | 88 | if (!tcon || !tcon->ses) |
ae6f8dd4 | 89 | return 0; |
7fb8986e PS |
90 | if ((tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) || |
91 | (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA)) | |
92 | return 1; | |
ae6f8dd4 PS |
93 | if (tcon->seal && |
94 | (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION)) | |
95 | return 1; | |
7fb8986e PS |
96 | return 0; |
97 | } | |
ec2e4523 PS |
98 | |
99 | static void | |
cb200bd6 | 100 | smb2_hdr_assemble(struct smb2_sync_hdr *shdr, __le16 smb2_cmd, |
352d96f3 AA |
101 | const struct cifs_tcon *tcon, |
102 | struct TCP_Server_Info *server) | |
ec2e4523 | 103 | { |
31473fc4 PS |
104 | shdr->ProtocolId = SMB2_PROTO_NUMBER; |
105 | shdr->StructureSize = cpu_to_le16(64); | |
106 | shdr->Command = smb2_cmd; | |
352d96f3 | 107 | if (server) { |
7d414f39 | 108 | spin_lock(&server->req_lock); |
69dc4b18 | 109 | /* Request up to 10 credits but don't go over the limit. */ |
141891f4 | 110 | if (server->credits >= server->max_credits) |
31473fc4 | 111 | shdr->CreditRequest = cpu_to_le16(0); |
7d414f39 | 112 | else |
31473fc4 | 113 | shdr->CreditRequest = cpu_to_le16( |
141891f4 | 114 | min_t(int, server->max_credits - |
69dc4b18 | 115 | server->credits, 10)); |
7d414f39 RL |
116 | spin_unlock(&server->req_lock); |
117 | } else { | |
31473fc4 | 118 | shdr->CreditRequest = cpu_to_le16(2); |
7d414f39 | 119 | } |
31473fc4 | 120 | shdr->ProcessId = cpu_to_le32((__u16)current->tgid); |
ec2e4523 PS |
121 | |
122 | if (!tcon) | |
123 | goto out; | |
124 | ||
2b80d049 SF |
125 | /* GLOBAL_CAP_LARGE_MTU will only be set if dialect > SMB2.02 */ |
126 | /* See sections 2.2.4 and 3.2.4.1.5 of MS-SMB2 */ | |
352d96f3 | 127 | if (server && (server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) |
31473fc4 | 128 | shdr->CreditCharge = cpu_to_le16(1); |
2b80d049 SF |
129 | /* else CreditCharge MBZ */ |
130 | ||
31473fc4 | 131 | shdr->TreeId = tcon->tid; |
ec2e4523 PS |
132 | /* Uid is not converted */ |
133 | if (tcon->ses) | |
31473fc4 | 134 | shdr->SessionId = tcon->ses->Suid; |
f87ab88b SF |
135 | |
136 | /* | |
137 | * If we would set SMB2_FLAGS_DFS_OPERATIONS on open we also would have | |
138 | * to pass the path on the Open SMB prefixed by \\server\share. | |
139 | * Not sure when we would need to do the augmented path (if ever) and | |
140 | * setting this flag breaks the SMB2 open operation since it is | |
141 | * illegal to send an empty path name (without \\server\share prefix) | |
142 | * when the DFS flag is set in the SMB open header. We could | |
143 | * consider setting the flag on all operations other than open | |
144 | * but it is safer to net set it for now. | |
145 | */ | |
146 | /* if (tcon->share_flags & SHI1005_FLAGS_DFS) | |
31473fc4 | 147 | shdr->Flags |= SMB2_FLAGS_DFS_OPERATIONS; */ |
f87ab88b | 148 | |
352d96f3 | 149 | if (server && server->sign && !smb3_encryption_required(tcon)) |
31473fc4 | 150 | shdr->Flags |= SMB2_FLAGS_SIGNED; |
ec2e4523 | 151 | out: |
ec2e4523 PS |
152 | return; |
153 | } | |
154 | ||
155 | static int | |
352d96f3 AA |
156 | smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon, |
157 | struct TCP_Server_Info *server) | |
ec2e4523 | 158 | { |
7ffbe655 | 159 | int rc; |
aa24d1e9 PS |
160 | struct nls_table *nls_codepage; |
161 | struct cifs_ses *ses; | |
a3a53b76 | 162 | int retries; |
aa24d1e9 PS |
163 | |
164 | /* | |
165 | * SMB2s NegProt, SessSetup, Logoff do not have tcon yet so | |
166 | * check for tcp and smb session status done differently | |
167 | * for those three - in the calling routine. | |
168 | */ | |
169 | if (tcon == NULL) | |
7ffbe655 | 170 | return 0; |
aa24d1e9 | 171 | |
84a1f5b1 | 172 | if (smb2_command == SMB2_TREE_CONNECT) |
7ffbe655 | 173 | return 0; |
aa24d1e9 PS |
174 | |
175 | if (tcon->tidStatus == CifsExiting) { | |
176 | /* | |
177 | * only tree disconnect, open, and write, | |
178 | * (and ulogoff which does not have tcon) | |
179 | * are allowed as we start force umount. | |
180 | */ | |
181 | if ((smb2_command != SMB2_WRITE) && | |
182 | (smb2_command != SMB2_CREATE) && | |
183 | (smb2_command != SMB2_TREE_DISCONNECT)) { | |
f96637be JP |
184 | cifs_dbg(FYI, "can not send cmd %d while umounting\n", |
185 | smb2_command); | |
aa24d1e9 PS |
186 | return -ENODEV; |
187 | } | |
188 | } | |
189 | if ((!tcon->ses) || (tcon->ses->status == CifsExiting) || | |
352d96f3 | 190 | (!tcon->ses->server) || !server) |
aa24d1e9 PS |
191 | return -EIO; |
192 | ||
193 | ses = tcon->ses; | |
a3a53b76 PA |
194 | retries = server->nr_targets; |
195 | ||
aa24d1e9 | 196 | /* |
a3a53b76 PA |
197 | * Give demultiplex thread up to 10 seconds to each target available for |
198 | * reconnect -- should be greater than cifs socket timeout which is 7 | |
199 | * seconds. | |
aa24d1e9 PS |
200 | */ |
201 | while (server->tcpStatus == CifsNeedReconnect) { | |
202 | /* | |
203 | * Return to caller for TREE_DISCONNECT and LOGOFF and CLOSE | |
204 | * here since they are implicitly done when session drops. | |
205 | */ | |
206 | switch (smb2_command) { | |
207 | /* | |
208 | * BB Should we keep oplock break and add flush to exceptions? | |
209 | */ | |
210 | case SMB2_TREE_DISCONNECT: | |
211 | case SMB2_CANCEL: | |
212 | case SMB2_CLOSE: | |
213 | case SMB2_OPLOCK_BREAK: | |
214 | return -EAGAIN; | |
215 | } | |
216 | ||
7ffbe655 PA |
217 | rc = wait_event_interruptible_timeout(server->response_q, |
218 | (server->tcpStatus != CifsNeedReconnect), | |
219 | 10 * HZ); | |
220 | if (rc < 0) { | |
a0a3036b JP |
221 | cifs_dbg(FYI, "%s: aborting reconnect due to a received signal by the process\n", |
222 | __func__); | |
7ffbe655 PA |
223 | return -ERESTARTSYS; |
224 | } | |
aa24d1e9 PS |
225 | |
226 | /* are we still trying to reconnect? */ | |
227 | if (server->tcpStatus != CifsNeedReconnect) | |
228 | break; | |
229 | ||
c54849dd | 230 | if (retries && --retries) |
a3a53b76 PA |
231 | continue; |
232 | ||
aa24d1e9 PS |
233 | /* |
234 | * on "soft" mounts we wait once. Hard mounts keep | |
235 | * retrying until process is killed or server comes | |
236 | * back on-line | |
237 | */ | |
238 | if (!tcon->retry) { | |
f96637be | 239 | cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n"); |
aa24d1e9 PS |
240 | return -EHOSTDOWN; |
241 | } | |
a3a53b76 | 242 | retries = server->nr_targets; |
aa24d1e9 PS |
243 | } |
244 | ||
245 | if (!tcon->ses->need_reconnect && !tcon->need_reconnect) | |
7ffbe655 | 246 | return 0; |
aa24d1e9 PS |
247 | |
248 | nls_codepage = load_nls_default(); | |
249 | ||
250 | /* | |
251 | * need to prevent multiple threads trying to simultaneously reconnect | |
252 | * the same SMB session | |
253 | */ | |
254 | mutex_lock(&tcon->ses->session_mutex); | |
76e75270 SC |
255 | |
256 | /* | |
257 | * Recheck after acquire mutex. If another thread is negotiating | |
258 | * and the server never sends an answer the socket will be closed | |
259 | * and tcpStatus set to reconnect. | |
260 | */ | |
261 | if (server->tcpStatus == CifsNeedReconnect) { | |
262 | rc = -EHOSTDOWN; | |
263 | mutex_unlock(&tcon->ses->session_mutex); | |
264 | goto out; | |
265 | } | |
266 | ||
2f589679 AA |
267 | /* |
268 | * If we are reconnecting an extra channel, bind | |
269 | */ | |
270 | if (server->is_channel) { | |
271 | ses->binding = true; | |
272 | ses->binding_chan = cifs_ses_find_chan(ses, server); | |
273 | } | |
274 | ||
aa24d1e9 | 275 | rc = cifs_negotiate_protocol(0, tcon->ses); |
b0dd940e | 276 | if (!rc && tcon->ses->need_reconnect) { |
aa24d1e9 | 277 | rc = cifs_setup_session(0, tcon->ses, nls_codepage); |
b0dd940e RS |
278 | if ((rc == -EACCES) && !tcon->retry) { |
279 | rc = -EHOSTDOWN; | |
2f589679 AA |
280 | ses->binding = false; |
281 | ses->binding_chan = NULL; | |
b0dd940e RS |
282 | mutex_unlock(&tcon->ses->session_mutex); |
283 | goto failed; | |
284 | } | |
285 | } | |
2f589679 AA |
286 | /* |
287 | * End of channel binding | |
288 | */ | |
289 | ses->binding = false; | |
290 | ses->binding_chan = NULL; | |
291 | ||
aa24d1e9 PS |
292 | if (rc || !tcon->need_reconnect) { |
293 | mutex_unlock(&tcon->ses->session_mutex); | |
294 | goto out; | |
295 | } | |
296 | ||
297 | cifs_mark_open_files_invalid(tcon); | |
96a988ff PS |
298 | if (tcon->use_persistent) |
299 | tcon->need_reopen_files = true; | |
52ace1ef | 300 | |
565674d6 | 301 | rc = cifs_tree_connect(0, tcon, nls_codepage); |
aa24d1e9 | 302 | mutex_unlock(&tcon->ses->session_mutex); |
52ace1ef | 303 | |
f96637be | 304 | cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
c318e6c2 SF |
305 | if (rc) { |
306 | /* If sess reconnected but tcon didn't, something strange ... */ | |
a0a3036b | 307 | pr_warn_once("reconnect tcon failed rc = %d\n", rc); |
aa24d1e9 | 308 | goto out; |
c318e6c2 | 309 | } |
96a988ff PS |
310 | |
311 | if (smb2_command != SMB2_INTERNAL_CMD) | |
b08484d7 | 312 | mod_delayed_work(cifsiod_wq, &server->reconnect, 0); |
96a988ff | 313 | |
aa24d1e9 | 314 | atomic_inc(&tconInfoReconnectCount); |
aa24d1e9 PS |
315 | out: |
316 | /* | |
317 | * Check if handle based operation so we know whether we can continue | |
318 | * or not without returning to caller to reset file handle. | |
319 | */ | |
320 | /* | |
321 | * BB Is flush done by server on drop of tcp session? Should we special | |
322 | * case it and skip above? | |
323 | */ | |
324 | switch (smb2_command) { | |
325 | case SMB2_FLUSH: | |
326 | case SMB2_READ: | |
327 | case SMB2_WRITE: | |
328 | case SMB2_LOCK: | |
329 | case SMB2_IOCTL: | |
330 | case SMB2_QUERY_DIRECTORY: | |
331 | case SMB2_CHANGE_NOTIFY: | |
332 | case SMB2_QUERY_INFO: | |
333 | case SMB2_SET_INFO: | |
4772c795 | 334 | rc = -EAGAIN; |
aa24d1e9 | 335 | } |
b0dd940e | 336 | failed: |
aa24d1e9 | 337 | unload_nls(nls_codepage); |
ec2e4523 PS |
338 | return rc; |
339 | } | |
340 | ||
cb200bd6 | 341 | static void |
352d96f3 AA |
342 | fill_small_buf(__le16 smb2_command, struct cifs_tcon *tcon, |
343 | struct TCP_Server_Info *server, | |
344 | void *buf, | |
cb200bd6 PS |
345 | unsigned int *total_len) |
346 | { | |
347 | struct smb2_sync_pdu *spdu = (struct smb2_sync_pdu *)buf; | |
348 | /* lookup word count ie StructureSize from table */ | |
349 | __u16 parmsize = smb2_req_struct_sizes[le16_to_cpu(smb2_command)]; | |
350 | ||
351 | /* | |
352 | * smaller than SMALL_BUFFER_SIZE but bigger than fixed area of | |
353 | * largest operations (Create) | |
354 | */ | |
355 | memset(buf, 0, 256); | |
356 | ||
352d96f3 | 357 | smb2_hdr_assemble(&spdu->sync_hdr, smb2_command, tcon, server); |
cb200bd6 PS |
358 | spdu->StructureSize2 = cpu_to_le16(parmsize); |
359 | ||
360 | *total_len = parmsize + sizeof(struct smb2_sync_hdr); | |
361 | } | |
362 | ||
ec2e4523 PS |
363 | /* |
364 | * Allocate and return pointer to an SMB request hdr, and set basic | |
365 | * SMB information in the SMB header. If the return code is zero, this | |
305428ac | 366 | * function must have filled in request_buf pointer. |
ec2e4523 | 367 | */ |
84a1f5b1 | 368 | static int __smb2_plain_req_init(__le16 smb2_command, struct cifs_tcon *tcon, |
352d96f3 AA |
369 | struct TCP_Server_Info *server, |
370 | void **request_buf, unsigned int *total_len) | |
ec2e4523 | 371 | { |
ec2e4523 | 372 | /* BB eventually switch this to SMB2 specific small buf size */ |
f46ecbd9 SB |
373 | if (smb2_command == SMB2_SET_INFO) |
374 | *request_buf = cifs_buf_get(); | |
375 | else | |
376 | *request_buf = cifs_small_buf_get(); | |
ec2e4523 PS |
377 | if (*request_buf == NULL) { |
378 | /* BB should we add a retry in here if not a writepage? */ | |
379 | return -ENOMEM; | |
380 | } | |
381 | ||
352d96f3 | 382 | fill_small_buf(smb2_command, tcon, server, |
305428ac RS |
383 | (struct smb2_sync_hdr *)(*request_buf), |
384 | total_len); | |
ec2e4523 PS |
385 | |
386 | if (tcon != NULL) { | |
ec2e4523 PS |
387 | uint16_t com_code = le16_to_cpu(smb2_command); |
388 | cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_sent[com_code]); | |
ec2e4523 PS |
389 | cifs_stats_inc(&tcon->num_smbs_sent); |
390 | } | |
391 | ||
84a1f5b1 PAS |
392 | return 0; |
393 | } | |
394 | ||
395 | static int smb2_plain_req_init(__le16 smb2_command, struct cifs_tcon *tcon, | |
352d96f3 | 396 | struct TCP_Server_Info *server, |
84a1f5b1 PAS |
397 | void **request_buf, unsigned int *total_len) |
398 | { | |
399 | int rc; | |
400 | ||
352d96f3 | 401 | rc = smb2_reconnect(smb2_command, tcon, server); |
84a1f5b1 PAS |
402 | if (rc) |
403 | return rc; | |
404 | ||
352d96f3 | 405 | return __smb2_plain_req_init(smb2_command, tcon, server, request_buf, |
84a1f5b1 PAS |
406 | total_len); |
407 | } | |
408 | ||
409 | static int smb2_ioctl_req_init(u32 opcode, struct cifs_tcon *tcon, | |
352d96f3 | 410 | struct TCP_Server_Info *server, |
84a1f5b1 PAS |
411 | void **request_buf, unsigned int *total_len) |
412 | { | |
413 | /* Skip reconnect only for FSCTL_VALIDATE_NEGOTIATE_INFO IOCTLs */ | |
414 | if (opcode == FSCTL_VALIDATE_NEGOTIATE_INFO) { | |
352d96f3 AA |
415 | return __smb2_plain_req_init(SMB2_IOCTL, tcon, server, |
416 | request_buf, total_len); | |
84a1f5b1 | 417 | } |
352d96f3 AA |
418 | return smb2_plain_req_init(SMB2_IOCTL, tcon, server, |
419 | request_buf, total_len); | |
ec2e4523 PS |
420 | } |
421 | ||
d7bef4c4 | 422 | /* For explanation of negotiate contexts see MS-SMB2 section 2.2.3.1 */ |
ebb3a9d4 SF |
423 | |
424 | static void | |
425 | build_preauth_ctxt(struct smb2_preauth_neg_context *pneg_ctxt) | |
426 | { | |
427 | pneg_ctxt->ContextType = SMB2_PREAUTH_INTEGRITY_CAPABILITIES; | |
428 | pneg_ctxt->DataLength = cpu_to_le16(38); | |
429 | pneg_ctxt->HashAlgorithmCount = cpu_to_le16(1); | |
430 | pneg_ctxt->SaltLength = cpu_to_le16(SMB311_SALT_SIZE); | |
431 | get_random_bytes(pneg_ctxt->Salt, SMB311_SALT_SIZE); | |
432 | pneg_ctxt->HashAlgorithms = SMB2_PREAUTH_INTEGRITY_SHA512; | |
433 | } | |
434 | ||
26ea888f SF |
435 | static void |
436 | build_compression_ctxt(struct smb2_compression_capabilities_context *pneg_ctxt) | |
437 | { | |
438 | pneg_ctxt->ContextType = SMB2_COMPRESSION_CAPABILITIES; | |
439 | pneg_ctxt->DataLength = | |
440 | cpu_to_le16(sizeof(struct smb2_compression_capabilities_context) | |
441 | - sizeof(struct smb2_neg_context)); | |
442 | pneg_ctxt->CompressionAlgorithmCount = cpu_to_le16(3); | |
443 | pneg_ctxt->CompressionAlgorithms[0] = SMB3_COMPRESS_LZ77; | |
444 | pneg_ctxt->CompressionAlgorithms[1] = SMB3_COMPRESS_LZ77_HUFF; | |
445 | pneg_ctxt->CompressionAlgorithms[2] = SMB3_COMPRESS_LZNT1; | |
446 | } | |
447 | ||
ebb3a9d4 SF |
448 | static void |
449 | build_encrypt_ctxt(struct smb2_encryption_neg_context *pneg_ctxt) | |
450 | { | |
451 | pneg_ctxt->ContextType = SMB2_ENCRYPTION_CAPABILITIES; | |
fbfd0b46 SF |
452 | if (require_gcm_256) { |
453 | pneg_ctxt->DataLength = cpu_to_le16(4); /* Cipher Count + 1 cipher */ | |
454 | pneg_ctxt->CipherCount = cpu_to_le16(1); | |
455 | pneg_ctxt->Ciphers[0] = SMB2_ENCRYPTION_AES256_GCM; | |
29e27923 SF |
456 | } else if (enable_gcm_256) { |
457 | pneg_ctxt->DataLength = cpu_to_le16(8); /* Cipher Count + 3 ciphers */ | |
458 | pneg_ctxt->CipherCount = cpu_to_le16(3); | |
459 | pneg_ctxt->Ciphers[0] = SMB2_ENCRYPTION_AES128_GCM; | |
460 | pneg_ctxt->Ciphers[1] = SMB2_ENCRYPTION_AES256_GCM; | |
461 | pneg_ctxt->Ciphers[2] = SMB2_ENCRYPTION_AES128_CCM; | |
fbfd0b46 SF |
462 | } else { |
463 | pneg_ctxt->DataLength = cpu_to_le16(6); /* Cipher Count + 2 ciphers */ | |
464 | pneg_ctxt->CipherCount = cpu_to_le16(2); | |
465 | pneg_ctxt->Ciphers[0] = SMB2_ENCRYPTION_AES128_GCM; | |
466 | pneg_ctxt->Ciphers[1] = SMB2_ENCRYPTION_AES128_CCM; | |
467 | } | |
ebb3a9d4 SF |
468 | } |
469 | ||
96d3cca1 SF |
470 | static unsigned int |
471 | build_netname_ctxt(struct smb2_netname_neg_context *pneg_ctxt, char *hostname) | |
472 | { | |
473 | struct nls_table *cp = load_nls_default(); | |
474 | ||
475 | pneg_ctxt->ContextType = SMB2_NETNAME_NEGOTIATE_CONTEXT_ID; | |
476 | ||
477 | /* copy up to max of first 100 bytes of server name to NetName field */ | |
df58fae7 | 478 | pneg_ctxt->DataLength = cpu_to_le16(2 * cifs_strtoUTF16(pneg_ctxt->NetName, hostname, 100, cp)); |
96d3cca1 SF |
479 | /* context size is DataLength + minimal smb2_neg_context */ |
480 | return DIV_ROUND_UP(le16_to_cpu(pneg_ctxt->DataLength) + | |
481 | sizeof(struct smb2_neg_context), 8) * 8; | |
482 | } | |
483 | ||
fcef0db6 SF |
484 | static void |
485 | build_posix_ctxt(struct smb2_posix_neg_context *pneg_ctxt) | |
486 | { | |
487 | pneg_ctxt->ContextType = SMB2_POSIX_EXTENSIONS_AVAILABLE; | |
488 | pneg_ctxt->DataLength = cpu_to_le16(POSIX_CTXT_DATA_LEN); | |
0d481325 SF |
489 | /* SMB2_CREATE_TAG_POSIX is "0x93AD25509CB411E7B42383DE968BCD7C" */ |
490 | pneg_ctxt->Name[0] = 0x93; | |
491 | pneg_ctxt->Name[1] = 0xAD; | |
492 | pneg_ctxt->Name[2] = 0x25; | |
493 | pneg_ctxt->Name[3] = 0x50; | |
494 | pneg_ctxt->Name[4] = 0x9C; | |
495 | pneg_ctxt->Name[5] = 0xB4; | |
496 | pneg_ctxt->Name[6] = 0x11; | |
497 | pneg_ctxt->Name[7] = 0xE7; | |
498 | pneg_ctxt->Name[8] = 0xB4; | |
499 | pneg_ctxt->Name[9] = 0x23; | |
500 | pneg_ctxt->Name[10] = 0x83; | |
501 | pneg_ctxt->Name[11] = 0xDE; | |
502 | pneg_ctxt->Name[12] = 0x96; | |
503 | pneg_ctxt->Name[13] = 0x8B; | |
504 | pneg_ctxt->Name[14] = 0xCD; | |
505 | pneg_ctxt->Name[15] = 0x7C; | |
fcef0db6 SF |
506 | } |
507 | ||
ebb3a9d4 | 508 | static void |
13cacea7 | 509 | assemble_neg_contexts(struct smb2_negotiate_req *req, |
9fe5ff1c | 510 | struct TCP_Server_Info *server, unsigned int *total_len) |
ebb3a9d4 | 511 | { |
a9f76cf8 | 512 | char *pneg_ctxt; |
fcef0db6 | 513 | unsigned int ctxt_len; |
ebb3a9d4 | 514 | |
d5c7076b SF |
515 | if (*total_len > 200) { |
516 | /* In case length corrupted don't want to overrun smb buffer */ | |
afe6f653 | 517 | cifs_server_dbg(VFS, "Bad frame length assembling neg contexts\n"); |
d5c7076b SF |
518 | return; |
519 | } | |
520 | ||
521 | /* | |
522 | * round up total_len of fixed part of SMB3 negotiate request to 8 | |
523 | * byte boundary before adding negotiate contexts | |
524 | */ | |
525 | *total_len = roundup(*total_len, 8); | |
526 | ||
527 | pneg_ctxt = (*total_len) + (char *)req; | |
528 | req->NegotiateContextOffset = cpu_to_le32(*total_len); | |
529 | ||
ebb3a9d4 | 530 | build_preauth_ctxt((struct smb2_preauth_neg_context *)pneg_ctxt); |
fcef0db6 SF |
531 | ctxt_len = DIV_ROUND_UP(sizeof(struct smb2_preauth_neg_context), 8) * 8; |
532 | *total_len += ctxt_len; | |
533 | pneg_ctxt += ctxt_len; | |
13cacea7 | 534 | |
ebb3a9d4 | 535 | build_encrypt_ctxt((struct smb2_encryption_neg_context *)pneg_ctxt); |
fcef0db6 SF |
536 | ctxt_len = DIV_ROUND_UP(sizeof(struct smb2_encryption_neg_context), 8) * 8; |
537 | *total_len += ctxt_len; | |
538 | pneg_ctxt += ctxt_len; | |
539 | ||
9fe5ff1c SF |
540 | if (server->compress_algorithm) { |
541 | build_compression_ctxt((struct smb2_compression_capabilities_context *) | |
26ea888f | 542 | pneg_ctxt); |
9fe5ff1c SF |
543 | ctxt_len = DIV_ROUND_UP( |
544 | sizeof(struct smb2_compression_capabilities_context), | |
545 | 8) * 8; | |
546 | *total_len += ctxt_len; | |
547 | pneg_ctxt += ctxt_len; | |
96d3cca1 | 548 | req->NegotiateContextCount = cpu_to_le16(5); |
9fe5ff1c | 549 | } else |
96d3cca1 SF |
550 | req->NegotiateContextCount = cpu_to_le16(4); |
551 | ||
552 | ctxt_len = build_netname_ctxt((struct smb2_netname_neg_context *)pneg_ctxt, | |
553 | server->hostname); | |
554 | *total_len += ctxt_len; | |
555 | pneg_ctxt += ctxt_len; | |
556 | ||
fcef0db6 SF |
557 | build_posix_ctxt((struct smb2_posix_neg_context *)pneg_ctxt); |
558 | *total_len += sizeof(struct smb2_posix_neg_context); | |
ebb3a9d4 | 559 | } |
5100d8a3 SF |
560 | |
561 | static void decode_preauth_context(struct smb2_preauth_neg_context *ctxt) | |
562 | { | |
563 | unsigned int len = le16_to_cpu(ctxt->DataLength); | |
564 | ||
565 | /* If invalid preauth context warn but use what we requested, SHA-512 */ | |
566 | if (len < MIN_PREAUTH_CTXT_DATA_LEN) { | |
a0a3036b | 567 | pr_warn_once("server sent bad preauth context\n"); |
5100d8a3 SF |
568 | return; |
569 | } | |
570 | if (le16_to_cpu(ctxt->HashAlgorithmCount) != 1) | |
a0a3036b | 571 | pr_warn_once("Invalid SMB3 hash algorithm count\n"); |
5100d8a3 | 572 | if (ctxt->HashAlgorithms != SMB2_PREAUTH_INTEGRITY_SHA512) |
a0a3036b | 573 | pr_warn_once("unknown SMB3 hash algorithm\n"); |
5100d8a3 SF |
574 | } |
575 | ||
26ea888f SF |
576 | static void decode_compress_ctx(struct TCP_Server_Info *server, |
577 | struct smb2_compression_capabilities_context *ctxt) | |
578 | { | |
579 | unsigned int len = le16_to_cpu(ctxt->DataLength); | |
580 | ||
581 | /* sizeof compress context is a one element compression capbility struct */ | |
582 | if (len < 10) { | |
a0a3036b | 583 | pr_warn_once("server sent bad compression cntxt\n"); |
26ea888f SF |
584 | return; |
585 | } | |
586 | if (le16_to_cpu(ctxt->CompressionAlgorithmCount) != 1) { | |
a0a3036b | 587 | pr_warn_once("Invalid SMB3 compress algorithm count\n"); |
26ea888f SF |
588 | return; |
589 | } | |
590 | if (le16_to_cpu(ctxt->CompressionAlgorithms[0]) > 3) { | |
a0a3036b | 591 | pr_warn_once("unknown compression algorithm\n"); |
26ea888f SF |
592 | return; |
593 | } | |
594 | server->compress_algorithm = ctxt->CompressionAlgorithms[0]; | |
595 | } | |
596 | ||
5100d8a3 SF |
597 | static int decode_encrypt_ctx(struct TCP_Server_Info *server, |
598 | struct smb2_encryption_neg_context *ctxt) | |
599 | { | |
600 | unsigned int len = le16_to_cpu(ctxt->DataLength); | |
601 | ||
602 | cifs_dbg(FYI, "decode SMB3.11 encryption neg context of len %d\n", len); | |
603 | if (len < MIN_ENCRYPT_CTXT_DATA_LEN) { | |
a0a3036b | 604 | pr_warn_once("server sent bad crypto ctxt len\n"); |
5100d8a3 SF |
605 | return -EINVAL; |
606 | } | |
607 | ||
608 | if (le16_to_cpu(ctxt->CipherCount) != 1) { | |
a0a3036b | 609 | pr_warn_once("Invalid SMB3.11 cipher count\n"); |
5100d8a3 SF |
610 | return -EINVAL; |
611 | } | |
612 | cifs_dbg(FYI, "SMB311 cipher type:%d\n", le16_to_cpu(ctxt->Ciphers[0])); | |
511ac89e SF |
613 | if (require_gcm_256) { |
614 | if (ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES256_GCM) { | |
615 | cifs_dbg(VFS, "Server does not support requested encryption type (AES256 GCM)\n"); | |
616 | return -EOPNOTSUPP; | |
617 | } | |
618 | } else if (ctxt->Ciphers[0] == 0) { | |
acf96fef SF |
619 | /* |
620 | * e.g. if server only supported AES256_CCM (very unlikely) | |
621 | * or server supported no encryption types or had all disabled. | |
622 | * Since GLOBAL_CAP_ENCRYPTION will be not set, in the case | |
623 | * in which mount requested encryption ("seal") checks later | |
624 | * on during tree connection will return proper rc, but if | |
625 | * seal not requested by client, since server is allowed to | |
626 | * return 0 to indicate no supported cipher, we can't fail here | |
627 | */ | |
628 | server->cipher_type = 0; | |
629 | server->capabilities &= ~SMB2_GLOBAL_CAP_ENCRYPTION; | |
630 | pr_warn_once("Server does not support requested encryption types\n"); | |
631 | return 0; | |
511ac89e SF |
632 | } else if ((ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES128_CCM) && |
633 | (ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES128_GCM) && | |
634 | (ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES256_GCM)) { | |
635 | /* server returned a cipher we didn't ask for */ | |
a0a3036b | 636 | pr_warn_once("Invalid SMB3.11 cipher returned\n"); |
5100d8a3 SF |
637 | return -EINVAL; |
638 | } | |
639 | server->cipher_type = ctxt->Ciphers[0]; | |
23657ad7 | 640 | server->capabilities |= SMB2_GLOBAL_CAP_ENCRYPTION; |
5100d8a3 SF |
641 | return 0; |
642 | } | |
643 | ||
644 | static int smb311_decode_neg_context(struct smb2_negotiate_rsp *rsp, | |
977b6170 RS |
645 | struct TCP_Server_Info *server, |
646 | unsigned int len_of_smb) | |
5100d8a3 SF |
647 | { |
648 | struct smb2_neg_context *pctx; | |
649 | unsigned int offset = le32_to_cpu(rsp->NegotiateContextOffset); | |
650 | unsigned int ctxt_cnt = le16_to_cpu(rsp->NegotiateContextCount); | |
5100d8a3 SF |
651 | unsigned int len_of_ctxts, i; |
652 | int rc = 0; | |
653 | ||
654 | cifs_dbg(FYI, "decoding %d negotiate contexts\n", ctxt_cnt); | |
655 | if (len_of_smb <= offset) { | |
afe6f653 | 656 | cifs_server_dbg(VFS, "Invalid response: negotiate context offset\n"); |
5100d8a3 SF |
657 | return -EINVAL; |
658 | } | |
659 | ||
660 | len_of_ctxts = len_of_smb - offset; | |
661 | ||
662 | for (i = 0; i < ctxt_cnt; i++) { | |
663 | int clen; | |
664 | /* check that offset is not beyond end of SMB */ | |
665 | if (len_of_ctxts == 0) | |
666 | break; | |
667 | ||
668 | if (len_of_ctxts < sizeof(struct smb2_neg_context)) | |
669 | break; | |
670 | ||
1fc6ad2f | 671 | pctx = (struct smb2_neg_context *)(offset + (char *)rsp); |
5100d8a3 SF |
672 | clen = le16_to_cpu(pctx->DataLength); |
673 | if (clen > len_of_ctxts) | |
674 | break; | |
675 | ||
676 | if (pctx->ContextType == SMB2_PREAUTH_INTEGRITY_CAPABILITIES) | |
677 | decode_preauth_context( | |
678 | (struct smb2_preauth_neg_context *)pctx); | |
679 | else if (pctx->ContextType == SMB2_ENCRYPTION_CAPABILITIES) | |
680 | rc = decode_encrypt_ctx(server, | |
681 | (struct smb2_encryption_neg_context *)pctx); | |
26ea888f SF |
682 | else if (pctx->ContextType == SMB2_COMPRESSION_CAPABILITIES) |
683 | decode_compress_ctx(server, | |
684 | (struct smb2_compression_capabilities_context *)pctx); | |
fcef0db6 SF |
685 | else if (pctx->ContextType == SMB2_POSIX_EXTENSIONS_AVAILABLE) |
686 | server->posix_ext_supported = true; | |
5100d8a3 | 687 | else |
afe6f653 | 688 | cifs_server_dbg(VFS, "unknown negcontext of type %d ignored\n", |
5100d8a3 SF |
689 | le16_to_cpu(pctx->ContextType)); |
690 | ||
691 | if (rc) | |
692 | break; | |
693 | /* offsets must be 8 byte aligned */ | |
694 | clen = (clen + 7) & ~0x7; | |
695 | offset += clen + sizeof(struct smb2_neg_context); | |
696 | len_of_ctxts -= clen; | |
697 | } | |
698 | return rc; | |
699 | } | |
700 | ||
ce558b0e SF |
701 | static struct create_posix * |
702 | create_posix_buf(umode_t mode) | |
703 | { | |
704 | struct create_posix *buf; | |
705 | ||
706 | buf = kzalloc(sizeof(struct create_posix), | |
707 | GFP_KERNEL); | |
708 | if (!buf) | |
709 | return NULL; | |
710 | ||
711 | buf->ccontext.DataOffset = | |
712 | cpu_to_le16(offsetof(struct create_posix, Mode)); | |
713 | buf->ccontext.DataLength = cpu_to_le32(4); | |
714 | buf->ccontext.NameOffset = | |
715 | cpu_to_le16(offsetof(struct create_posix, Name)); | |
716 | buf->ccontext.NameLength = cpu_to_le16(16); | |
717 | ||
718 | /* SMB2_CREATE_TAG_POSIX is "0x93AD25509CB411E7B42383DE968BCD7C" */ | |
719 | buf->Name[0] = 0x93; | |
720 | buf->Name[1] = 0xAD; | |
721 | buf->Name[2] = 0x25; | |
722 | buf->Name[3] = 0x50; | |
723 | buf->Name[4] = 0x9C; | |
724 | buf->Name[5] = 0xB4; | |
725 | buf->Name[6] = 0x11; | |
726 | buf->Name[7] = 0xE7; | |
727 | buf->Name[8] = 0xB4; | |
728 | buf->Name[9] = 0x23; | |
729 | buf->Name[10] = 0x83; | |
730 | buf->Name[11] = 0xDE; | |
731 | buf->Name[12] = 0x96; | |
732 | buf->Name[13] = 0x8B; | |
733 | buf->Name[14] = 0xCD; | |
734 | buf->Name[15] = 0x7C; | |
735 | buf->Mode = cpu_to_le32(mode); | |
a0a3036b | 736 | cifs_dbg(FYI, "mode on posix create 0%o\n", mode); |
ce558b0e SF |
737 | return buf; |
738 | } | |
739 | ||
740 | static int | |
741 | add_posix_context(struct kvec *iov, unsigned int *num_iovec, umode_t mode) | |
742 | { | |
743 | struct smb2_create_req *req = iov[0].iov_base; | |
744 | unsigned int num = *num_iovec; | |
745 | ||
746 | iov[num].iov_base = create_posix_buf(mode); | |
d0959b08 | 747 | if (mode == ACL_NO_MODE) |
a0a3036b | 748 | cifs_dbg(FYI, "Invalid mode\n"); |
ce558b0e SF |
749 | if (iov[num].iov_base == NULL) |
750 | return -ENOMEM; | |
751 | iov[num].iov_len = sizeof(struct create_posix); | |
752 | if (!req->CreateContextsOffset) | |
753 | req->CreateContextsOffset = cpu_to_le32( | |
754 | sizeof(struct smb2_create_req) + | |
755 | iov[num - 1].iov_len); | |
756 | le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_posix)); | |
757 | *num_iovec = num + 1; | |
758 | return 0; | |
759 | } | |
760 | ||
ebb3a9d4 | 761 | |
ec2e4523 PS |
762 | /* |
763 | * | |
764 | * SMB2 Worker functions follow: | |
765 | * | |
766 | * The general structure of the worker functions is: | |
767 | * 1) Call smb2_init (assembles SMB2 header) | |
768 | * 2) Initialize SMB2 command specific fields in fixed length area of SMB | |
769 | * 3) Call smb_sendrcv2 (sends request on socket and waits for response) | |
770 | * 4) Decode SMB2 command specific fields in the fixed length area | |
771 | * 5) Decode variable length data area (if any for this SMB2 command type) | |
772 | * 6) Call free smb buffer | |
773 | * 7) return | |
774 | * | |
775 | */ | |
776 | ||
777 | int | |
778 | SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses) | |
779 | { | |
40eff45b | 780 | struct smb_rqst rqst; |
ec2e4523 PS |
781 | struct smb2_negotiate_req *req; |
782 | struct smb2_negotiate_rsp *rsp; | |
783 | struct kvec iov[1]; | |
da502f7d | 784 | struct kvec rsp_iov; |
ec2e4523 PS |
785 | int rc = 0; |
786 | int resp_buftype; | |
f6a6bf7c | 787 | struct TCP_Server_Info *server = cifs_ses_server(ses); |
ec2e4523 PS |
788 | int blob_offset, blob_length; |
789 | char *security_blob; | |
790 | int flags = CIFS_NEG_OP; | |
13cacea7 | 791 | unsigned int total_len; |
ec2e4523 | 792 | |
f96637be | 793 | cifs_dbg(FYI, "Negotiate protocol\n"); |
ec2e4523 | 794 | |
3534b850 JL |
795 | if (!server) { |
796 | WARN(1, "%s: server is NULL!\n", __func__); | |
797 | return -EIO; | |
ec2e4523 PS |
798 | } |
799 | ||
352d96f3 AA |
800 | rc = smb2_plain_req_init(SMB2_NEGOTIATE, NULL, server, |
801 | (void **) &req, &total_len); | |
ec2e4523 PS |
802 | if (rc) |
803 | return rc; | |
804 | ||
13cacea7 | 805 | req->sync_hdr.SessionId = 0; |
0fdfef9a | 806 | |
8bd68c6e AA |
807 | memset(server->preauth_sha_hash, 0, SMB2_PREAUTH_HASH_SIZE); |
808 | memset(ses->preauth_sha_hash, 0, SMB2_PREAUTH_HASH_SIZE); | |
ec2e4523 | 809 | |
f6a6bf7c | 810 | if (strcmp(server->vals->version_string, |
9764c02f SF |
811 | SMB3ANY_VERSION_STRING) == 0) { |
812 | req->Dialects[0] = cpu_to_le16(SMB30_PROT_ID); | |
813 | req->Dialects[1] = cpu_to_le16(SMB302_PROT_ID); | |
814 | req->DialectCount = cpu_to_le16(2); | |
13cacea7 | 815 | total_len += 4; |
afe6f653 | 816 | } else if (strcmp(server->vals->version_string, |
9764c02f SF |
817 | SMBDEFAULT_VERSION_STRING) == 0) { |
818 | req->Dialects[0] = cpu_to_le16(SMB21_PROT_ID); | |
819 | req->Dialects[1] = cpu_to_le16(SMB30_PROT_ID); | |
820 | req->Dialects[2] = cpu_to_le16(SMB302_PROT_ID); | |
d5c7076b SF |
821 | req->Dialects[3] = cpu_to_le16(SMB311_PROT_ID); |
822 | req->DialectCount = cpu_to_le16(4); | |
823 | total_len += 8; | |
9764c02f SF |
824 | } else { |
825 | /* otherwise send specific dialect */ | |
f6a6bf7c | 826 | req->Dialects[0] = cpu_to_le16(server->vals->protocol_id); |
9764c02f | 827 | req->DialectCount = cpu_to_le16(1); |
13cacea7 | 828 | total_len += 2; |
9764c02f | 829 | } |
ec2e4523 PS |
830 | |
831 | /* only one of SMB2 signing flags may be set in SMB2 request */ | |
38d77c50 | 832 | if (ses->sign) |
9cd2e62c | 833 | req->SecurityMode = cpu_to_le16(SMB2_NEGOTIATE_SIGNING_REQUIRED); |
38d77c50 | 834 | else if (global_secflags & CIFSSEC_MAY_SIGN) |
9cd2e62c | 835 | req->SecurityMode = cpu_to_le16(SMB2_NEGOTIATE_SIGNING_ENABLED); |
38d77c50 JL |
836 | else |
837 | req->SecurityMode = 0; | |
ec2e4523 | 838 | |
afe6f653 | 839 | req->Capabilities = cpu_to_le32(server->vals->req_capabilities); |
ec2e4523 | 840 | |
3c5f9be1 | 841 | /* ClientGUID must be zero for SMB2.02 dialect */ |
afe6f653 | 842 | if (server->vals->protocol_id == SMB20_PROT_ID) |
3c5f9be1 | 843 | memset(req->ClientGUID, 0, SMB2_CLIENT_GUID_SIZE); |
ebb3a9d4 | 844 | else { |
3c5f9be1 SF |
845 | memcpy(req->ClientGUID, server->client_guid, |
846 | SMB2_CLIENT_GUID_SIZE); | |
afe6f653 RS |
847 | if ((server->vals->protocol_id == SMB311_PROT_ID) || |
848 | (strcmp(server->vals->version_string, | |
d5c7076b | 849 | SMBDEFAULT_VERSION_STRING) == 0)) |
9fe5ff1c | 850 | assemble_neg_contexts(req, server, &total_len); |
ebb3a9d4 | 851 | } |
ec2e4523 | 852 | iov[0].iov_base = (char *)req; |
13cacea7 | 853 | iov[0].iov_len = total_len; |
ec2e4523 | 854 | |
40eff45b RS |
855 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
856 | rqst.rq_iov = iov; | |
857 | rqst.rq_nvec = 1; | |
858 | ||
352d96f3 AA |
859 | rc = cifs_send_recv(xid, ses, server, |
860 | &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d PS |
861 | cifs_small_buf_release(req); |
862 | rsp = (struct smb2_negotiate_rsp *)rsp_iov.iov_base; | |
ec2e4523 PS |
863 | /* |
864 | * No tcon so can't do | |
865 | * cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_fail[SMB2...]); | |
866 | */ | |
7e682f76 | 867 | if (rc == -EOPNOTSUPP) { |
a0a3036b | 868 | cifs_server_dbg(VFS, "Dialect not supported by server. Consider specifying vers=1.0 or vers=2.0 on mount for accessing older servers\n"); |
7e682f76 SF |
869 | goto neg_exit; |
870 | } else if (rc != 0) | |
ec2e4523 PS |
871 | goto neg_exit; |
872 | ||
afe6f653 | 873 | if (strcmp(server->vals->version_string, |
9764c02f SF |
874 | SMB3ANY_VERSION_STRING) == 0) { |
875 | if (rsp->DialectRevision == cpu_to_le16(SMB20_PROT_ID)) { | |
afe6f653 | 876 | cifs_server_dbg(VFS, |
9764c02f SF |
877 | "SMB2 dialect returned but not requested\n"); |
878 | return -EIO; | |
879 | } else if (rsp->DialectRevision == cpu_to_le16(SMB21_PROT_ID)) { | |
afe6f653 | 880 | cifs_server_dbg(VFS, |
9764c02f SF |
881 | "SMB2.1 dialect returned but not requested\n"); |
882 | return -EIO; | |
883 | } | |
afe6f653 | 884 | } else if (strcmp(server->vals->version_string, |
9764c02f SF |
885 | SMBDEFAULT_VERSION_STRING) == 0) { |
886 | if (rsp->DialectRevision == cpu_to_le16(SMB20_PROT_ID)) { | |
afe6f653 | 887 | cifs_server_dbg(VFS, |
9764c02f SF |
888 | "SMB2 dialect returned but not requested\n"); |
889 | return -EIO; | |
890 | } else if (rsp->DialectRevision == cpu_to_le16(SMB21_PROT_ID)) { | |
891 | /* ops set to 3.0 by default for default so update */ | |
afe6f653 RS |
892 | server->ops = &smb21_operations; |
893 | server->vals = &smb21_values; | |
b57a55e2 | 894 | } else if (rsp->DialectRevision == cpu_to_le16(SMB311_PROT_ID)) { |
afe6f653 RS |
895 | server->ops = &smb311_operations; |
896 | server->vals = &smb311_values; | |
b57a55e2 | 897 | } |
590d08d3 | 898 | } else if (le16_to_cpu(rsp->DialectRevision) != |
afe6f653 | 899 | server->vals->protocol_id) { |
9764c02f | 900 | /* if requested single dialect ensure returned dialect matched */ |
a0a3036b JP |
901 | cifs_server_dbg(VFS, "Invalid 0x%x dialect returned: not requested\n", |
902 | le16_to_cpu(rsp->DialectRevision)); | |
9764c02f SF |
903 | return -EIO; |
904 | } | |
905 | ||
f96637be | 906 | cifs_dbg(FYI, "mode 0x%x\n", rsp->SecurityMode); |
ec2e4523 | 907 | |
e4aa25e7 | 908 | if (rsp->DialectRevision == cpu_to_le16(SMB20_PROT_ID)) |
f96637be | 909 | cifs_dbg(FYI, "negotiated smb2.0 dialect\n"); |
e4aa25e7 | 910 | else if (rsp->DialectRevision == cpu_to_le16(SMB21_PROT_ID)) |
f96637be | 911 | cifs_dbg(FYI, "negotiated smb2.1 dialect\n"); |
e4aa25e7 | 912 | else if (rsp->DialectRevision == cpu_to_le16(SMB30_PROT_ID)) |
f96637be | 913 | cifs_dbg(FYI, "negotiated smb3.0 dialect\n"); |
20b6d8b4 SF |
914 | else if (rsp->DialectRevision == cpu_to_le16(SMB302_PROT_ID)) |
915 | cifs_dbg(FYI, "negotiated smb3.02 dialect\n"); | |
5f7fbf73 SF |
916 | else if (rsp->DialectRevision == cpu_to_le16(SMB311_PROT_ID)) |
917 | cifs_dbg(FYI, "negotiated smb3.1.1 dialect\n"); | |
ec2e4523 | 918 | else { |
a0a3036b JP |
919 | cifs_server_dbg(VFS, "Invalid dialect returned by server 0x%x\n", |
920 | le16_to_cpu(rsp->DialectRevision)); | |
ec2e4523 PS |
921 | rc = -EIO; |
922 | goto neg_exit; | |
923 | } | |
924 | server->dialect = le16_to_cpu(rsp->DialectRevision); | |
925 | ||
8bd68c6e AA |
926 | /* |
927 | * Keep a copy of the hash after negprot. This hash will be | |
928 | * the starting hash value for all sessions made from this | |
929 | * server. | |
930 | */ | |
931 | memcpy(server->preauth_sha_hash, ses->preauth_sha_hash, | |
932 | SMB2_PREAUTH_HASH_SIZE); | |
0fdfef9a | 933 | |
e598d1d8 JL |
934 | /* SMB2 only has an extended negflavor */ |
935 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; | |
2365c4ea PS |
936 | /* set it to the maximum buffer size value we can send with 1 credit */ |
937 | server->maxBuf = min_t(unsigned int, le32_to_cpu(rsp->MaxTransactSize), | |
938 | SMB2_MAX_BUFFER_SIZE); | |
ec2e4523 PS |
939 | server->max_read = le32_to_cpu(rsp->MaxReadSize); |
940 | server->max_write = le32_to_cpu(rsp->MaxWriteSize); | |
ec2e4523 | 941 | server->sec_mode = le16_to_cpu(rsp->SecurityMode); |
07108d0e SF |
942 | if ((server->sec_mode & SMB2_SEC_MODE_FLAGS_ALL) != server->sec_mode) |
943 | cifs_dbg(FYI, "Server returned unexpected security mode 0x%x\n", | |
944 | server->sec_mode); | |
ec2e4523 | 945 | server->capabilities = le32_to_cpu(rsp->Capabilities); |
29e20f9c PS |
946 | /* Internal types */ |
947 | server->capabilities |= SMB2_NT_FIND | SMB2_LARGE_FILES; | |
ec2e4523 PS |
948 | |
949 | security_blob = smb2_get_data_area_len(&blob_offset, &blob_length, | |
49f466bd | 950 | (struct smb2_sync_hdr *)rsp); |
5d875cc9 SF |
951 | /* |
952 | * See MS-SMB2 section 2.2.4: if no blob, client picks default which | |
953 | * for us will be | |
954 | * ses->sectype = RawNTLMSSP; | |
955 | * but for time being this is our only auth choice so doesn't matter. | |
956 | * We just found a server which sets blob length to zero expecting raw. | |
957 | */ | |
67dbea2c | 958 | if (blob_length == 0) { |
5d875cc9 | 959 | cifs_dbg(FYI, "missing security blob on negprot\n"); |
67dbea2c PS |
960 | server->sec_ntlmssp = true; |
961 | } | |
3c1bf7e4 | 962 | |
38d77c50 | 963 | rc = cifs_enable_signing(server, ses->sign); |
9ddec561 JL |
964 | if (rc) |
965 | goto neg_exit; | |
ceb1b0b9 | 966 | if (blob_length) { |
ebdd207e | 967 | rc = decode_negTokenInit(security_blob, blob_length, server); |
ceb1b0b9 SF |
968 | if (rc == 1) |
969 | rc = 0; | |
970 | else if (rc == 0) | |
971 | rc = -EIO; | |
ec2e4523 | 972 | } |
5100d8a3 | 973 | |
5100d8a3 SF |
974 | if (rsp->DialectRevision == cpu_to_le16(SMB311_PROT_ID)) { |
975 | if (rsp->NegotiateContextCount) | |
977b6170 RS |
976 | rc = smb311_decode_neg_context(rsp, server, |
977 | rsp_iov.iov_len); | |
5100d8a3 | 978 | else |
afe6f653 | 979 | cifs_server_dbg(VFS, "Missing expected negotiate contexts\n"); |
5100d8a3 | 980 | } |
ec2e4523 PS |
981 | neg_exit: |
982 | free_rsp_buf(resp_buftype, rsp); | |
983 | return rc; | |
984 | } | |
5478f9ba | 985 | |
ff1c038a SF |
986 | int smb3_validate_negotiate(const unsigned int xid, struct cifs_tcon *tcon) |
987 | { | |
2796d303 LL |
988 | int rc; |
989 | struct validate_negotiate_info_req *pneg_inbuf; | |
fe83bebc | 990 | struct validate_negotiate_info_rsp *pneg_rsp = NULL; |
ff1c038a | 991 | u32 rsplen; |
9764c02f | 992 | u32 inbuflen; /* max of 4 dialects */ |
afe6f653 | 993 | struct TCP_Server_Info *server = tcon->ses->server; |
ff1c038a SF |
994 | |
995 | cifs_dbg(FYI, "validate negotiate\n"); | |
996 | ||
8bd68c6e | 997 | /* In SMB3.11 preauth integrity supersedes validate negotiate */ |
afe6f653 | 998 | if (server->dialect == SMB311_PROT_ID) |
8bd68c6e AA |
999 | return 0; |
1000 | ||
ff1c038a SF |
1001 | /* |
1002 | * validation ioctl must be signed, so no point sending this if we | |
0603c96f SF |
1003 | * can not sign it (ie are not known user). Even if signing is not |
1004 | * required (enabled but not negotiated), in those cases we selectively | |
ff1c038a | 1005 | * sign just this, the first and only signed request on a connection. |
0603c96f | 1006 | * Having validation of negotiate info helps reduce attack vectors. |
ff1c038a | 1007 | */ |
0603c96f | 1008 | if (tcon->ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) |
ff1c038a SF |
1009 | return 0; /* validation requires signing */ |
1010 | ||
0603c96f SF |
1011 | if (tcon->ses->user_name == NULL) { |
1012 | cifs_dbg(FYI, "Can't validate negotiate: null user mount\n"); | |
1013 | return 0; /* validation requires signing */ | |
1014 | } | |
1015 | ||
1016 | if (tcon->ses->session_flags & SMB2_SESSION_FLAG_IS_NULL) | |
3175eb9b | 1017 | cifs_tcon_dbg(VFS, "Unexpected null user (anonymous) auth flag sent by server\n"); |
0603c96f | 1018 | |
2796d303 LL |
1019 | pneg_inbuf = kmalloc(sizeof(*pneg_inbuf), GFP_NOFS); |
1020 | if (!pneg_inbuf) | |
1021 | return -ENOMEM; | |
1022 | ||
1023 | pneg_inbuf->Capabilities = | |
afe6f653 RS |
1024 | cpu_to_le32(server->vals->req_capabilities); |
1025 | memcpy(pneg_inbuf->Guid, server->client_guid, | |
39552ea8 | 1026 | SMB2_CLIENT_GUID_SIZE); |
ff1c038a SF |
1027 | |
1028 | if (tcon->ses->sign) | |
2796d303 | 1029 | pneg_inbuf->SecurityMode = |
ff1c038a SF |
1030 | cpu_to_le16(SMB2_NEGOTIATE_SIGNING_REQUIRED); |
1031 | else if (global_secflags & CIFSSEC_MAY_SIGN) | |
2796d303 | 1032 | pneg_inbuf->SecurityMode = |
ff1c038a SF |
1033 | cpu_to_le16(SMB2_NEGOTIATE_SIGNING_ENABLED); |
1034 | else | |
2796d303 | 1035 | pneg_inbuf->SecurityMode = 0; |
ff1c038a | 1036 | |
9764c02f | 1037 | |
afe6f653 | 1038 | if (strcmp(server->vals->version_string, |
9764c02f | 1039 | SMB3ANY_VERSION_STRING) == 0) { |
2796d303 LL |
1040 | pneg_inbuf->Dialects[0] = cpu_to_le16(SMB30_PROT_ID); |
1041 | pneg_inbuf->Dialects[1] = cpu_to_le16(SMB302_PROT_ID); | |
1042 | pneg_inbuf->DialectCount = cpu_to_le16(2); | |
9764c02f | 1043 | /* structure is big enough for 3 dialects, sending only 2 */ |
2796d303 | 1044 | inbuflen = sizeof(*pneg_inbuf) - |
d5c7076b | 1045 | (2 * sizeof(pneg_inbuf->Dialects[0])); |
afe6f653 | 1046 | } else if (strcmp(server->vals->version_string, |
9764c02f | 1047 | SMBDEFAULT_VERSION_STRING) == 0) { |
2796d303 LL |
1048 | pneg_inbuf->Dialects[0] = cpu_to_le16(SMB21_PROT_ID); |
1049 | pneg_inbuf->Dialects[1] = cpu_to_le16(SMB30_PROT_ID); | |
1050 | pneg_inbuf->Dialects[2] = cpu_to_le16(SMB302_PROT_ID); | |
d5c7076b SF |
1051 | pneg_inbuf->Dialects[3] = cpu_to_le16(SMB311_PROT_ID); |
1052 | pneg_inbuf->DialectCount = cpu_to_le16(4); | |
9764c02f | 1053 | /* structure is big enough for 3 dialects */ |
2796d303 | 1054 | inbuflen = sizeof(*pneg_inbuf); |
9764c02f SF |
1055 | } else { |
1056 | /* otherwise specific dialect was requested */ | |
2796d303 | 1057 | pneg_inbuf->Dialects[0] = |
afe6f653 | 1058 | cpu_to_le16(server->vals->protocol_id); |
2796d303 | 1059 | pneg_inbuf->DialectCount = cpu_to_le16(1); |
9764c02f | 1060 | /* structure is big enough for 3 dialects, sending only 1 */ |
2796d303 LL |
1061 | inbuflen = sizeof(*pneg_inbuf) - |
1062 | sizeof(pneg_inbuf->Dialects[0]) * 2; | |
9764c02f | 1063 | } |
ff1c038a SF |
1064 | |
1065 | rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, | |
1066 | FSCTL_VALIDATE_NEGOTIATE_INFO, true /* is_fsctl */, | |
153322f7 SF |
1067 | (char *)pneg_inbuf, inbuflen, CIFSMaxBufSize, |
1068 | (char **)&pneg_rsp, &rsplen); | |
969ae8e8 NJ |
1069 | if (rc == -EOPNOTSUPP) { |
1070 | /* | |
1071 | * Old Windows versions or Netapp SMB server can return | |
1072 | * not supported error. Client should accept it. | |
1073 | */ | |
3175eb9b | 1074 | cifs_tcon_dbg(VFS, "Server does not support validate negotiate\n"); |
21078203 CIK |
1075 | rc = 0; |
1076 | goto out_free_inbuf; | |
969ae8e8 | 1077 | } else if (rc != 0) { |
a0a3036b JP |
1078 | cifs_tcon_dbg(VFS, "validate protocol negotiate failed: %d\n", |
1079 | rc); | |
2796d303 LL |
1080 | rc = -EIO; |
1081 | goto out_free_inbuf; | |
ff1c038a SF |
1082 | } |
1083 | ||
2796d303 LL |
1084 | rc = -EIO; |
1085 | if (rsplen != sizeof(*pneg_rsp)) { | |
a0a3036b JP |
1086 | cifs_tcon_dbg(VFS, "Invalid protocol negotiate response size: %d\n", |
1087 | rsplen); | |
7db0a6ef SF |
1088 | |
1089 | /* relax check since Mac returns max bufsize allowed on ioctl */ | |
2796d303 LL |
1090 | if (rsplen > CIFSMaxBufSize || rsplen < sizeof(*pneg_rsp)) |
1091 | goto out_free_rsp; | |
ff1c038a SF |
1092 | } |
1093 | ||
1094 | /* check validate negotiate info response matches what we got earlier */ | |
afe6f653 | 1095 | if (pneg_rsp->Dialect != cpu_to_le16(server->dialect)) |
ff1c038a SF |
1096 | goto vneg_out; |
1097 | ||
afe6f653 | 1098 | if (pneg_rsp->SecurityMode != cpu_to_le16(server->sec_mode)) |
ff1c038a SF |
1099 | goto vneg_out; |
1100 | ||
1101 | /* do not validate server guid because not saved at negprot time yet */ | |
1102 | ||
1103 | if ((le32_to_cpu(pneg_rsp->Capabilities) | SMB2_NT_FIND | | |
afe6f653 | 1104 | SMB2_LARGE_FILES) != server->capabilities) |
ff1c038a SF |
1105 | goto vneg_out; |
1106 | ||
1107 | /* validate negotiate successful */ | |
2796d303 | 1108 | rc = 0; |
ff1c038a | 1109 | cifs_dbg(FYI, "validate negotiate info successful\n"); |
2796d303 | 1110 | goto out_free_rsp; |
ff1c038a SF |
1111 | |
1112 | vneg_out: | |
3175eb9b | 1113 | cifs_tcon_dbg(VFS, "protocol revalidation - security settings mismatch\n"); |
2796d303 | 1114 | out_free_rsp: |
fe83bebc | 1115 | kfree(pneg_rsp); |
2796d303 LL |
1116 | out_free_inbuf: |
1117 | kfree(pneg_inbuf); | |
1118 | return rc; | |
ff1c038a SF |
1119 | } |
1120 | ||
ef65aaed SP |
1121 | enum securityEnum |
1122 | smb2_select_sectype(struct TCP_Server_Info *server, enum securityEnum requested) | |
1123 | { | |
1124 | switch (requested) { | |
1125 | case Kerberos: | |
1126 | case RawNTLMSSP: | |
1127 | return requested; | |
1128 | case NTLMv2: | |
1129 | return RawNTLMSSP; | |
1130 | case Unspecified: | |
1131 | if (server->sec_ntlmssp && | |
1132 | (global_secflags & CIFSSEC_MAY_NTLMSSP)) | |
1133 | return RawNTLMSSP; | |
1134 | if ((server->sec_kerberos || server->sec_mskerberos) && | |
1135 | (global_secflags & CIFSSEC_MAY_KRB5)) | |
1136 | return Kerberos; | |
df561f66 | 1137 | fallthrough; |
ef65aaed SP |
1138 | default: |
1139 | return Unspecified; | |
1140 | } | |
1141 | } | |
1142 | ||
3baf1a7b SP |
1143 | struct SMB2_sess_data { |
1144 | unsigned int xid; | |
1145 | struct cifs_ses *ses; | |
1146 | struct nls_table *nls_cp; | |
1147 | void (*func)(struct SMB2_sess_data *); | |
1148 | int result; | |
1149 | u64 previous_session; | |
1150 | ||
1151 | /* we will send the SMB in three pieces: | |
1152 | * a fixed length beginning part, an optional | |
1153 | * SPNEGO blob (which can be zero length), and a | |
1154 | * last part which will include the strings | |
1155 | * and rest of bcc area. This allows us to avoid | |
1156 | * a large buffer 17K allocation | |
1157 | */ | |
1158 | int buf0_type; | |
1159 | struct kvec iov[2]; | |
1160 | }; | |
1161 | ||
1162 | static int | |
1163 | SMB2_sess_alloc_buffer(struct SMB2_sess_data *sess_data) | |
1164 | { | |
1165 | int rc; | |
1166 | struct cifs_ses *ses = sess_data->ses; | |
1167 | struct smb2_sess_setup_req *req; | |
f6a6bf7c | 1168 | struct TCP_Server_Info *server = cifs_ses_server(ses); |
88ea5cb7 | 1169 | unsigned int total_len; |
3baf1a7b | 1170 | |
352d96f3 AA |
1171 | rc = smb2_plain_req_init(SMB2_SESSION_SETUP, NULL, server, |
1172 | (void **) &req, | |
1173 | &total_len); | |
3baf1a7b SP |
1174 | if (rc) |
1175 | return rc; | |
1176 | ||
d70e9fa5 AA |
1177 | if (sess_data->ses->binding) { |
1178 | req->sync_hdr.SessionId = sess_data->ses->Suid; | |
1179 | req->sync_hdr.Flags |= SMB2_FLAGS_SIGNED; | |
1180 | req->PreviousSessionId = 0; | |
1181 | req->Flags = SMB2_SESSION_REQ_FLAG_BINDING; | |
1182 | } else { | |
1183 | /* First session, not a reauthenticate */ | |
1184 | req->sync_hdr.SessionId = 0; | |
1185 | /* | |
1186 | * if reconnect, we need to send previous sess id | |
1187 | * otherwise it is 0 | |
1188 | */ | |
1189 | req->PreviousSessionId = sess_data->previous_session; | |
1190 | req->Flags = 0; /* MBZ */ | |
1191 | } | |
d409014e SF |
1192 | |
1193 | /* enough to enable echos and oplocks and one max size write */ | |
1194 | req->sync_hdr.CreditRequest = cpu_to_le16(130); | |
3baf1a7b SP |
1195 | |
1196 | /* only one of SMB2 signing flags may be set in SMB2 request */ | |
1197 | if (server->sign) | |
1198 | req->SecurityMode = SMB2_NEGOTIATE_SIGNING_REQUIRED; | |
1199 | else if (global_secflags & CIFSSEC_MAY_SIGN) /* one flag unlike MUST_ */ | |
1200 | req->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED; | |
1201 | else | |
1202 | req->SecurityMode = 0; | |
1203 | ||
8d33096a SF |
1204 | #ifdef CONFIG_CIFS_DFS_UPCALL |
1205 | req->Capabilities = cpu_to_le32(SMB2_GLOBAL_CAP_DFS); | |
1206 | #else | |
3baf1a7b | 1207 | req->Capabilities = 0; |
8d33096a SF |
1208 | #endif /* DFS_UPCALL */ |
1209 | ||
3baf1a7b SP |
1210 | req->Channel = 0; /* MBZ */ |
1211 | ||
1212 | sess_data->iov[0].iov_base = (char *)req; | |
88ea5cb7 RS |
1213 | /* 1 for pad */ |
1214 | sess_data->iov[0].iov_len = total_len - 1; | |
3baf1a7b SP |
1215 | /* |
1216 | * This variable will be used to clear the buffer | |
1217 | * allocated above in case of any error in the calling function. | |
1218 | */ | |
1219 | sess_data->buf0_type = CIFS_SMALL_BUFFER; | |
1220 | ||
1221 | return 0; | |
1222 | } | |
1223 | ||
1224 | static void | |
1225 | SMB2_sess_free_buffer(struct SMB2_sess_data *sess_data) | |
1226 | { | |
1227 | free_rsp_buf(sess_data->buf0_type, sess_data->iov[0].iov_base); | |
1228 | sess_data->buf0_type = CIFS_NO_BUFFER; | |
1229 | } | |
1230 | ||
1231 | static int | |
1232 | SMB2_sess_sendreceive(struct SMB2_sess_data *sess_data) | |
1233 | { | |
1234 | int rc; | |
40eff45b | 1235 | struct smb_rqst rqst; |
3baf1a7b | 1236 | struct smb2_sess_setup_req *req = sess_data->iov[0].iov_base; |
da502f7d | 1237 | struct kvec rsp_iov = { NULL, 0 }; |
3baf1a7b SP |
1238 | |
1239 | /* Testing shows that buffer offset must be at location of Buffer[0] */ | |
1240 | req->SecurityBufferOffset = | |
88ea5cb7 | 1241 | cpu_to_le16(sizeof(struct smb2_sess_setup_req) - 1 /* pad */); |
3baf1a7b SP |
1242 | req->SecurityBufferLength = cpu_to_le16(sess_data->iov[1].iov_len); |
1243 | ||
40eff45b RS |
1244 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
1245 | rqst.rq_iov = sess_data->iov; | |
1246 | rqst.rq_nvec = 2; | |
3baf1a7b | 1247 | |
40eff45b RS |
1248 | /* BB add code to build os and lm fields */ |
1249 | rc = cifs_send_recv(sess_data->xid, sess_data->ses, | |
352d96f3 | 1250 | cifs_ses_server(sess_data->ses), |
40eff45b | 1251 | &rqst, |
88ea5cb7 RS |
1252 | &sess_data->buf0_type, |
1253 | CIFS_LOG_ERROR | CIFS_NEG_OP, &rsp_iov); | |
da502f7d PS |
1254 | cifs_small_buf_release(sess_data->iov[0].iov_base); |
1255 | memcpy(&sess_data->iov[0], &rsp_iov, sizeof(struct kvec)); | |
3baf1a7b SP |
1256 | |
1257 | return rc; | |
1258 | } | |
1259 | ||
1260 | static int | |
1261 | SMB2_sess_establish_session(struct SMB2_sess_data *sess_data) | |
1262 | { | |
1263 | int rc = 0; | |
1264 | struct cifs_ses *ses = sess_data->ses; | |
f6a6bf7c | 1265 | struct TCP_Server_Info *server = cifs_ses_server(ses); |
3baf1a7b | 1266 | |
f6a6bf7c AA |
1267 | mutex_lock(&server->srv_mutex); |
1268 | if (server->ops->generate_signingkey) { | |
1269 | rc = server->ops->generate_signingkey(ses); | |
3baf1a7b SP |
1270 | if (rc) { |
1271 | cifs_dbg(FYI, | |
1272 | "SMB3 session key generation failed\n"); | |
f6a6bf7c | 1273 | mutex_unlock(&server->srv_mutex); |
cabfb368 | 1274 | return rc; |
3baf1a7b SP |
1275 | } |
1276 | } | |
f6a6bf7c AA |
1277 | if (!server->session_estab) { |
1278 | server->sequence_number = 0x2; | |
1279 | server->session_estab = true; | |
3baf1a7b | 1280 | } |
f6a6bf7c | 1281 | mutex_unlock(&server->srv_mutex); |
3baf1a7b SP |
1282 | |
1283 | cifs_dbg(FYI, "SMB2/3 session established successfully\n"); | |
d70e9fa5 AA |
1284 | /* keep existing ses state if binding */ |
1285 | if (!ses->binding) { | |
1286 | spin_lock(&GlobalMid_Lock); | |
1287 | ses->status = CifsGood; | |
1288 | ses->need_reconnect = false; | |
1289 | spin_unlock(&GlobalMid_Lock); | |
1290 | } | |
1291 | ||
3baf1a7b SP |
1292 | return rc; |
1293 | } | |
1294 | ||
1295 | #ifdef CONFIG_CIFS_UPCALL | |
1296 | static void | |
1297 | SMB2_auth_kerberos(struct SMB2_sess_data *sess_data) | |
1298 | { | |
1299 | int rc; | |
1300 | struct cifs_ses *ses = sess_data->ses; | |
1301 | struct cifs_spnego_msg *msg; | |
1302 | struct key *spnego_key = NULL; | |
1303 | struct smb2_sess_setup_rsp *rsp = NULL; | |
1304 | ||
1305 | rc = SMB2_sess_alloc_buffer(sess_data); | |
1306 | if (rc) | |
1307 | goto out; | |
1308 | ||
1309 | spnego_key = cifs_get_spnego_key(ses); | |
1310 | if (IS_ERR(spnego_key)) { | |
1311 | rc = PTR_ERR(spnego_key); | |
0a018944 SF |
1312 | if (rc == -ENOKEY) |
1313 | cifs_dbg(VFS, "Verify user has a krb5 ticket and keyutils is installed\n"); | |
3baf1a7b SP |
1314 | spnego_key = NULL; |
1315 | goto out; | |
1316 | } | |
1317 | ||
1318 | msg = spnego_key->payload.data[0]; | |
1319 | /* | |
1320 | * check version field to make sure that cifs.upcall is | |
1321 | * sending us a response in an expected form | |
1322 | */ | |
1323 | if (msg->version != CIFS_SPNEGO_UPCALL_VERSION) { | |
a0a3036b JP |
1324 | cifs_dbg(VFS, "bad cifs.upcall version. Expected %d got %d\n", |
1325 | CIFS_SPNEGO_UPCALL_VERSION, msg->version); | |
3baf1a7b SP |
1326 | rc = -EKEYREJECTED; |
1327 | goto out_put_spnego_key; | |
1328 | } | |
1329 | ||
d70e9fa5 AA |
1330 | /* keep session key if binding */ |
1331 | if (!ses->binding) { | |
1332 | ses->auth_key.response = kmemdup(msg->data, msg->sesskey_len, | |
1333 | GFP_KERNEL); | |
1334 | if (!ses->auth_key.response) { | |
a0a3036b | 1335 | cifs_dbg(VFS, "Kerberos can't allocate (%u bytes) memory\n", |
d70e9fa5 AA |
1336 | msg->sesskey_len); |
1337 | rc = -ENOMEM; | |
1338 | goto out_put_spnego_key; | |
1339 | } | |
1340 | ses->auth_key.len = msg->sesskey_len; | |
3baf1a7b | 1341 | } |
3baf1a7b SP |
1342 | |
1343 | sess_data->iov[1].iov_base = msg->data + msg->sesskey_len; | |
1344 | sess_data->iov[1].iov_len = msg->secblob_len; | |
1345 | ||
1346 | rc = SMB2_sess_sendreceive(sess_data); | |
1347 | if (rc) | |
1348 | goto out_put_spnego_key; | |
1349 | ||
1350 | rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base; | |
d70e9fa5 AA |
1351 | /* keep session id and flags if binding */ |
1352 | if (!ses->binding) { | |
1353 | ses->Suid = rsp->sync_hdr.SessionId; | |
1354 | ses->session_flags = le16_to_cpu(rsp->SessionFlags); | |
1355 | } | |
3baf1a7b SP |
1356 | |
1357 | rc = SMB2_sess_establish_session(sess_data); | |
1358 | out_put_spnego_key: | |
1359 | key_invalidate(spnego_key); | |
1360 | key_put(spnego_key); | |
1361 | out: | |
1362 | sess_data->result = rc; | |
1363 | sess_data->func = NULL; | |
1364 | SMB2_sess_free_buffer(sess_data); | |
1365 | } | |
1366 | #else | |
1367 | static void | |
1368 | SMB2_auth_kerberos(struct SMB2_sess_data *sess_data) | |
1369 | { | |
1370 | cifs_dbg(VFS, "Kerberos negotiated but upcall support disabled!\n"); | |
1371 | sess_data->result = -EOPNOTSUPP; | |
1372 | sess_data->func = NULL; | |
1373 | } | |
1374 | #endif | |
1375 | ||
166cea4d SP |
1376 | static void |
1377 | SMB2_sess_auth_rawntlmssp_authenticate(struct SMB2_sess_data *sess_data); | |
1378 | ||
1379 | static void | |
1380 | SMB2_sess_auth_rawntlmssp_negotiate(struct SMB2_sess_data *sess_data) | |
5478f9ba | 1381 | { |
166cea4d SP |
1382 | int rc; |
1383 | struct cifs_ses *ses = sess_data->ses; | |
5478f9ba | 1384 | struct smb2_sess_setup_rsp *rsp = NULL; |
166cea4d | 1385 | char *ntlmssp_blob = NULL; |
5478f9ba | 1386 | bool use_spnego = false; /* else use raw ntlmssp */ |
166cea4d | 1387 | u16 blob_length = 0; |
d4e63bd6 | 1388 | |
5478f9ba PS |
1389 | /* |
1390 | * If memory allocation is successful, caller of this function | |
1391 | * frees it. | |
1392 | */ | |
1393 | ses->ntlmssp = kmalloc(sizeof(struct ntlmssp_auth), GFP_KERNEL); | |
166cea4d SP |
1394 | if (!ses->ntlmssp) { |
1395 | rc = -ENOMEM; | |
1396 | goto out_err; | |
1397 | } | |
5c234aa5 | 1398 | ses->ntlmssp->sesskey_per_smbsess = true; |
5478f9ba | 1399 | |
166cea4d | 1400 | rc = SMB2_sess_alloc_buffer(sess_data); |
5478f9ba | 1401 | if (rc) |
166cea4d | 1402 | goto out_err; |
5478f9ba | 1403 | |
166cea4d SP |
1404 | ntlmssp_blob = kmalloc(sizeof(struct _NEGOTIATE_MESSAGE), |
1405 | GFP_KERNEL); | |
1406 | if (ntlmssp_blob == NULL) { | |
1407 | rc = -ENOMEM; | |
1408 | goto out; | |
1409 | } | |
c2afb814 | 1410 | |
166cea4d SP |
1411 | build_ntlmssp_negotiate_blob(ntlmssp_blob, ses); |
1412 | if (use_spnego) { | |
1413 | /* BB eventually need to add this */ | |
1414 | cifs_dbg(VFS, "spnego not supported for SMB2 yet\n"); | |
1415 | rc = -EOPNOTSUPP; | |
1416 | goto out; | |
1417 | } else { | |
1418 | blob_length = sizeof(struct _NEGOTIATE_MESSAGE); | |
1419 | /* with raw NTLMSSP we don't encapsulate in SPNEGO */ | |
1420 | } | |
1421 | sess_data->iov[1].iov_base = ntlmssp_blob; | |
1422 | sess_data->iov[1].iov_len = blob_length; | |
c2afb814 | 1423 | |
166cea4d SP |
1424 | rc = SMB2_sess_sendreceive(sess_data); |
1425 | rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base; | |
5478f9ba | 1426 | |
166cea4d SP |
1427 | /* If true, rc here is expected and not an error */ |
1428 | if (sess_data->buf0_type != CIFS_NO_BUFFER && | |
49f466bd | 1429 | rsp->sync_hdr.Status == STATUS_MORE_PROCESSING_REQUIRED) |
166cea4d | 1430 | rc = 0; |
38d77c50 | 1431 | |
166cea4d SP |
1432 | if (rc) |
1433 | goto out; | |
5478f9ba | 1434 | |
1fc6ad2f | 1435 | if (offsetof(struct smb2_sess_setup_rsp, Buffer) != |
166cea4d SP |
1436 | le16_to_cpu(rsp->SecurityBufferOffset)) { |
1437 | cifs_dbg(VFS, "Invalid security buffer offset %d\n", | |
1438 | le16_to_cpu(rsp->SecurityBufferOffset)); | |
5478f9ba | 1439 | rc = -EIO; |
166cea4d | 1440 | goto out; |
5478f9ba | 1441 | } |
166cea4d SP |
1442 | rc = decode_ntlmssp_challenge(rsp->Buffer, |
1443 | le16_to_cpu(rsp->SecurityBufferLength), ses); | |
1444 | if (rc) | |
1445 | goto out; | |
5478f9ba | 1446 | |
166cea4d | 1447 | cifs_dbg(FYI, "rawntlmssp session setup challenge phase\n"); |
5478f9ba | 1448 | |
d70e9fa5 AA |
1449 | /* keep existing ses id and flags if binding */ |
1450 | if (!ses->binding) { | |
1451 | ses->Suid = rsp->sync_hdr.SessionId; | |
1452 | ses->session_flags = le16_to_cpu(rsp->SessionFlags); | |
1453 | } | |
166cea4d SP |
1454 | |
1455 | out: | |
1456 | kfree(ntlmssp_blob); | |
1457 | SMB2_sess_free_buffer(sess_data); | |
1458 | if (!rc) { | |
1459 | sess_data->result = 0; | |
1460 | sess_data->func = SMB2_sess_auth_rawntlmssp_authenticate; | |
1461 | return; | |
1462 | } | |
1463 | out_err: | |
1464 | kfree(ses->ntlmssp); | |
1465 | ses->ntlmssp = NULL; | |
1466 | sess_data->result = rc; | |
1467 | sess_data->func = NULL; | |
1468 | } | |
5478f9ba | 1469 | |
166cea4d SP |
1470 | static void |
1471 | SMB2_sess_auth_rawntlmssp_authenticate(struct SMB2_sess_data *sess_data) | |
1472 | { | |
1473 | int rc; | |
1474 | struct cifs_ses *ses = sess_data->ses; | |
1475 | struct smb2_sess_setup_req *req; | |
1476 | struct smb2_sess_setup_rsp *rsp = NULL; | |
1477 | unsigned char *ntlmssp_blob = NULL; | |
1478 | bool use_spnego = false; /* else use raw ntlmssp */ | |
1479 | u16 blob_length = 0; | |
5478f9ba | 1480 | |
166cea4d SP |
1481 | rc = SMB2_sess_alloc_buffer(sess_data); |
1482 | if (rc) | |
1483 | goto out; | |
5478f9ba | 1484 | |
166cea4d | 1485 | req = (struct smb2_sess_setup_req *) sess_data->iov[0].iov_base; |
88ea5cb7 | 1486 | req->sync_hdr.SessionId = ses->Suid; |
166cea4d SP |
1487 | |
1488 | rc = build_ntlmssp_auth_blob(&ntlmssp_blob, &blob_length, ses, | |
1489 | sess_data->nls_cp); | |
1490 | if (rc) { | |
1491 | cifs_dbg(FYI, "build_ntlmssp_auth_blob failed %d\n", rc); | |
1492 | goto out; | |
5478f9ba PS |
1493 | } |
1494 | ||
166cea4d SP |
1495 | if (use_spnego) { |
1496 | /* BB eventually need to add this */ | |
1497 | cifs_dbg(VFS, "spnego not supported for SMB2 yet\n"); | |
1498 | rc = -EOPNOTSUPP; | |
1499 | goto out; | |
1500 | } | |
1501 | sess_data->iov[1].iov_base = ntlmssp_blob; | |
1502 | sess_data->iov[1].iov_len = blob_length; | |
5478f9ba | 1503 | |
166cea4d SP |
1504 | rc = SMB2_sess_sendreceive(sess_data); |
1505 | if (rc) | |
1506 | goto out; | |
1507 | ||
1508 | rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base; | |
1509 | ||
d70e9fa5 AA |
1510 | /* keep existing ses id and flags if binding */ |
1511 | if (!ses->binding) { | |
1512 | ses->Suid = rsp->sync_hdr.SessionId; | |
1513 | ses->session_flags = le16_to_cpu(rsp->SessionFlags); | |
1514 | } | |
5478f9ba | 1515 | |
166cea4d | 1516 | rc = SMB2_sess_establish_session(sess_data); |
f560cda9 RS |
1517 | #ifdef CONFIG_CIFS_DEBUG_DUMP_KEYS |
1518 | if (ses->server->dialect < SMB30_PROT_ID) { | |
1519 | cifs_dbg(VFS, "%s: dumping generated SMB2 session keys\n", __func__); | |
1520 | /* | |
1521 | * The session id is opaque in terms of endianness, so we can't | |
1522 | * print it as a long long. we dump it as we got it on the wire | |
1523 | */ | |
1524 | cifs_dbg(VFS, "Session Id %*ph\n", (int)sizeof(ses->Suid), | |
1525 | &ses->Suid); | |
1526 | cifs_dbg(VFS, "Session Key %*ph\n", | |
1527 | SMB2_NTLMV2_SESSKEY_SIZE, ses->auth_key.response); | |
1528 | cifs_dbg(VFS, "Signing Key %*ph\n", | |
1529 | SMB3_SIGN_KEY_SIZE, ses->auth_key.response); | |
1530 | } | |
1531 | #endif | |
166cea4d SP |
1532 | out: |
1533 | kfree(ntlmssp_blob); | |
1534 | SMB2_sess_free_buffer(sess_data); | |
1535 | kfree(ses->ntlmssp); | |
1536 | ses->ntlmssp = NULL; | |
1537 | sess_data->result = rc; | |
1538 | sess_data->func = NULL; | |
1539 | } | |
d4e63bd6 | 1540 | |
166cea4d SP |
1541 | static int |
1542 | SMB2_select_sec(struct cifs_ses *ses, struct SMB2_sess_data *sess_data) | |
1543 | { | |
ef65aaed SP |
1544 | int type; |
1545 | ||
f6a6bf7c | 1546 | type = smb2_select_sectype(cifs_ses_server(ses), ses->sectype); |
ef65aaed SP |
1547 | cifs_dbg(FYI, "sess setup type %d\n", type); |
1548 | if (type == Unspecified) { | |
a0a3036b | 1549 | cifs_dbg(VFS, "Unable to select appropriate authentication method!\n"); |
ef65aaed SP |
1550 | return -EINVAL; |
1551 | } | |
d4e63bd6 | 1552 | |
ef65aaed | 1553 | switch (type) { |
166cea4d SP |
1554 | case Kerberos: |
1555 | sess_data->func = SMB2_auth_kerberos; | |
1556 | break; | |
1557 | case RawNTLMSSP: | |
1558 | sess_data->func = SMB2_sess_auth_rawntlmssp_negotiate; | |
1559 | break; | |
1560 | default: | |
ef65aaed | 1561 | cifs_dbg(VFS, "secType %d not supported!\n", type); |
166cea4d | 1562 | return -EOPNOTSUPP; |
d4e63bd6 SP |
1563 | } |
1564 | ||
166cea4d SP |
1565 | return 0; |
1566 | } | |
1567 | ||
1568 | int | |
1569 | SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses, | |
1570 | const struct nls_table *nls_cp) | |
1571 | { | |
1572 | int rc = 0; | |
f6a6bf7c | 1573 | struct TCP_Server_Info *server = cifs_ses_server(ses); |
166cea4d SP |
1574 | struct SMB2_sess_data *sess_data; |
1575 | ||
1576 | cifs_dbg(FYI, "Session Setup\n"); | |
1577 | ||
1578 | if (!server) { | |
1579 | WARN(1, "%s: server is NULL!\n", __func__); | |
1580 | return -EIO; | |
d4e63bd6 | 1581 | } |
d4e63bd6 | 1582 | |
166cea4d SP |
1583 | sess_data = kzalloc(sizeof(struct SMB2_sess_data), GFP_KERNEL); |
1584 | if (!sess_data) | |
1585 | return -ENOMEM; | |
1586 | ||
1587 | rc = SMB2_select_sec(ses, sess_data); | |
1588 | if (rc) | |
1589 | goto out; | |
1590 | sess_data->xid = xid; | |
1591 | sess_data->ses = ses; | |
1592 | sess_data->buf0_type = CIFS_NO_BUFFER; | |
1593 | sess_data->nls_cp = (struct nls_table *) nls_cp; | |
b2adf22f | 1594 | sess_data->previous_session = ses->Suid; |
166cea4d | 1595 | |
8bd68c6e AA |
1596 | /* |
1597 | * Initialize the session hash with the server one. | |
1598 | */ | |
f6a6bf7c | 1599 | memcpy(ses->preauth_sha_hash, server->preauth_sha_hash, |
8bd68c6e | 1600 | SMB2_PREAUTH_HASH_SIZE); |
8bd68c6e | 1601 | |
166cea4d SP |
1602 | while (sess_data->func) |
1603 | sess_data->func(sess_data); | |
1604 | ||
c721c389 | 1605 | if ((ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) && (ses->sign)) |
afe6f653 | 1606 | cifs_server_dbg(VFS, "signing requested but authenticated as guest\n"); |
3baf1a7b | 1607 | rc = sess_data->result; |
166cea4d | 1608 | out: |
3baf1a7b | 1609 | kfree(sess_data); |
5478f9ba PS |
1610 | return rc; |
1611 | } | |
1612 | ||
1613 | int | |
1614 | SMB2_logoff(const unsigned int xid, struct cifs_ses *ses) | |
1615 | { | |
40eff45b | 1616 | struct smb_rqst rqst; |
5478f9ba PS |
1617 | struct smb2_logoff_req *req; /* response is also trivial struct */ |
1618 | int rc = 0; | |
1619 | struct TCP_Server_Info *server; | |
7fb8986e | 1620 | int flags = 0; |
45305eda RS |
1621 | unsigned int total_len; |
1622 | struct kvec iov[1]; | |
1623 | struct kvec rsp_iov; | |
1624 | int resp_buf_type; | |
5478f9ba | 1625 | |
f96637be | 1626 | cifs_dbg(FYI, "disconnect session %p\n", ses); |
5478f9ba PS |
1627 | |
1628 | if (ses && (ses->server)) | |
1629 | server = ses->server; | |
1630 | else | |
1631 | return -EIO; | |
1632 | ||
eb4c7df6 SP |
1633 | /* no need to send SMB logoff if uid already closed due to reconnect */ |
1634 | if (ses->need_reconnect) | |
1635 | goto smb2_session_already_dead; | |
1636 | ||
352d96f3 AA |
1637 | rc = smb2_plain_req_init(SMB2_LOGOFF, NULL, ses->server, |
1638 | (void **) &req, &total_len); | |
5478f9ba PS |
1639 | if (rc) |
1640 | return rc; | |
1641 | ||
1642 | /* since no tcon, smb2_init can not do this, so do here */ | |
45305eda | 1643 | req->sync_hdr.SessionId = ses->Suid; |
7fb8986e PS |
1644 | |
1645 | if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) | |
1646 | flags |= CIFS_TRANSFORM_REQ; | |
1647 | else if (server->sign) | |
45305eda RS |
1648 | req->sync_hdr.Flags |= SMB2_FLAGS_SIGNED; |
1649 | ||
392e1c5d | 1650 | flags |= CIFS_NO_RSP_BUF; |
45305eda RS |
1651 | |
1652 | iov[0].iov_base = (char *)req; | |
1653 | iov[0].iov_len = total_len; | |
5478f9ba | 1654 | |
40eff45b RS |
1655 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
1656 | rqst.rq_iov = iov; | |
1657 | rqst.rq_nvec = 1; | |
1658 | ||
352d96f3 AA |
1659 | rc = cifs_send_recv(xid, ses, ses->server, |
1660 | &rqst, &resp_buf_type, flags, &rsp_iov); | |
da502f7d | 1661 | cifs_small_buf_release(req); |
5478f9ba PS |
1662 | /* |
1663 | * No tcon so can't do | |
1664 | * cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_fail[SMB2...]); | |
1665 | */ | |
eb4c7df6 SP |
1666 | |
1667 | smb2_session_already_dead: | |
5478f9ba PS |
1668 | return rc; |
1669 | } | |
faaf946a PS |
1670 | |
1671 | static inline void cifs_stats_fail_inc(struct cifs_tcon *tcon, uint16_t code) | |
1672 | { | |
d60622eb | 1673 | cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_failed[code]); |
faaf946a PS |
1674 | } |
1675 | ||
1676 | #define MAX_SHARENAME_LENGTH (255 /* server */ + 80 /* share */ + 1 /* NULL */) | |
1677 | ||
de9f68df SF |
1678 | /* These are similar values to what Windows uses */ |
1679 | static inline void init_copy_chunk_defaults(struct cifs_tcon *tcon) | |
1680 | { | |
1681 | tcon->max_chunks = 256; | |
1682 | tcon->max_bytes_chunk = 1048576; | |
1683 | tcon->max_bytes_copy = 16777216; | |
1684 | } | |
1685 | ||
faaf946a PS |
1686 | int |
1687 | SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree, | |
1688 | struct cifs_tcon *tcon, const struct nls_table *cp) | |
1689 | { | |
40eff45b | 1690 | struct smb_rqst rqst; |
faaf946a PS |
1691 | struct smb2_tree_connect_req *req; |
1692 | struct smb2_tree_connect_rsp *rsp = NULL; | |
1693 | struct kvec iov[2]; | |
db3b5474 | 1694 | struct kvec rsp_iov = { NULL, 0 }; |
faaf946a PS |
1695 | int rc = 0; |
1696 | int resp_buftype; | |
1697 | int unc_path_len; | |
faaf946a | 1698 | __le16 *unc_path = NULL; |
7fb8986e | 1699 | int flags = 0; |
661bb943 | 1700 | unsigned int total_len; |
352d96f3 AA |
1701 | struct TCP_Server_Info *server; |
1702 | ||
1703 | /* always use master channel */ | |
1704 | server = ses->server; | |
faaf946a | 1705 | |
f96637be | 1706 | cifs_dbg(FYI, "TCON\n"); |
faaf946a | 1707 | |
afe6f653 | 1708 | if (!server || !tree) |
faaf946a PS |
1709 | return -EIO; |
1710 | ||
faaf946a PS |
1711 | unc_path = kmalloc(MAX_SHARENAME_LENGTH * 2, GFP_KERNEL); |
1712 | if (unc_path == NULL) | |
1713 | return -ENOMEM; | |
1714 | ||
1715 | unc_path_len = cifs_strtoUTF16(unc_path, tree, strlen(tree), cp) + 1; | |
1716 | unc_path_len *= 2; | |
1717 | if (unc_path_len < 2) { | |
1718 | kfree(unc_path); | |
1719 | return -EINVAL; | |
1720 | } | |
1721 | ||
806a28ef | 1722 | /* SMB2 TREE_CONNECT request must be called with TreeId == 0 */ |
b327a717 | 1723 | tcon->tid = 0; |
fae8044c | 1724 | atomic_set(&tcon->num_remote_opens, 0); |
352d96f3 AA |
1725 | rc = smb2_plain_req_init(SMB2_TREE_CONNECT, tcon, server, |
1726 | (void **) &req, &total_len); | |
faaf946a PS |
1727 | if (rc) { |
1728 | kfree(unc_path); | |
1729 | return rc; | |
1730 | } | |
1731 | ||
5a77e75f | 1732 | if (smb3_encryption_required(tcon)) |
ae6f8dd4 | 1733 | flags |= CIFS_TRANSFORM_REQ; |
faaf946a PS |
1734 | |
1735 | iov[0].iov_base = (char *)req; | |
661bb943 RS |
1736 | /* 1 for pad */ |
1737 | iov[0].iov_len = total_len - 1; | |
faaf946a PS |
1738 | |
1739 | /* Testing shows that buffer offset must be at location of Buffer[0] */ | |
1740 | req->PathOffset = cpu_to_le16(sizeof(struct smb2_tree_connect_req) | |
661bb943 | 1741 | - 1 /* pad */); |
faaf946a PS |
1742 | req->PathLength = cpu_to_le16(unc_path_len - 2); |
1743 | iov[1].iov_base = unc_path; | |
1744 | iov[1].iov_len = unc_path_len; | |
1745 | ||
e71ab2aa RS |
1746 | /* |
1747 | * 3.11 tcon req must be signed if not encrypted. See MS-SMB2 3.2.4.1.1 | |
1748 | * unless it is guest or anonymous user. See MS-SMB2 3.2.5.3.1 | |
8c11a607 | 1749 | * (Samba servers don't always set the flag so also check if null user) |
e71ab2aa | 1750 | */ |
afe6f653 | 1751 | if ((server->dialect == SMB311_PROT_ID) && |
e71ab2aa | 1752 | !smb3_encryption_required(tcon) && |
8c11a607 SF |
1753 | !(ses->session_flags & |
1754 | (SMB2_SESSION_FLAG_IS_GUEST|SMB2_SESSION_FLAG_IS_NULL)) && | |
1755 | ((ses->user_name != NULL) || (ses->sectype == Kerberos))) | |
6188f28b SF |
1756 | req->sync_hdr.Flags |= SMB2_FLAGS_SIGNED; |
1757 | ||
40eff45b RS |
1758 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
1759 | rqst.rq_iov = iov; | |
1760 | rqst.rq_nvec = 2; | |
1761 | ||
4fe75c4e SF |
1762 | /* Need 64 for max size write so ask for more in case not there yet */ |
1763 | req->sync_hdr.CreditRequest = cpu_to_le16(64); | |
1764 | ||
352d96f3 AA |
1765 | rc = cifs_send_recv(xid, ses, server, |
1766 | &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d PS |
1767 | cifs_small_buf_release(req); |
1768 | rsp = (struct smb2_tree_connect_rsp *)rsp_iov.iov_base; | |
f8af49dd | 1769 | trace_smb3_tcon(xid, tcon->tid, ses->Suid, tree, rc); |
faaf946a PS |
1770 | if (rc != 0) { |
1771 | if (tcon) { | |
1772 | cifs_stats_fail_inc(tcon, SMB2_TREE_CONNECT_HE); | |
1773 | tcon->need_reconnect = true; | |
1774 | } | |
1775 | goto tcon_error_exit; | |
1776 | } | |
1777 | ||
cd123007 CJ |
1778 | switch (rsp->ShareType) { |
1779 | case SMB2_SHARE_TYPE_DISK: | |
f96637be | 1780 | cifs_dbg(FYI, "connection to disk share\n"); |
cd123007 CJ |
1781 | break; |
1782 | case SMB2_SHARE_TYPE_PIPE: | |
b327a717 | 1783 | tcon->pipe = true; |
f96637be | 1784 | cifs_dbg(FYI, "connection to pipe share\n"); |
cd123007 CJ |
1785 | break; |
1786 | case SMB2_SHARE_TYPE_PRINT: | |
b327a717 | 1787 | tcon->print = true; |
f96637be | 1788 | cifs_dbg(FYI, "connection to printer\n"); |
cd123007 CJ |
1789 | break; |
1790 | default: | |
afe6f653 | 1791 | cifs_server_dbg(VFS, "unknown share type %d\n", rsp->ShareType); |
faaf946a PS |
1792 | rc = -EOPNOTSUPP; |
1793 | goto tcon_error_exit; | |
1794 | } | |
1795 | ||
1796 | tcon->share_flags = le32_to_cpu(rsp->ShareFlags); | |
769ee6a4 | 1797 | tcon->capabilities = rsp->Capabilities; /* we keep caps little endian */ |
faaf946a PS |
1798 | tcon->maximal_access = le32_to_cpu(rsp->MaximalAccess); |
1799 | tcon->tidStatus = CifsGood; | |
1800 | tcon->need_reconnect = false; | |
49f466bd | 1801 | tcon->tid = rsp->sync_hdr.TreeId; |
46b51d08 | 1802 | strlcpy(tcon->treeName, tree, sizeof(tcon->treeName)); |
faaf946a PS |
1803 | |
1804 | if ((rsp->Capabilities & SMB2_SHARE_CAP_DFS) && | |
1805 | ((tcon->share_flags & SHI1005_FLAGS_DFS) == 0)) | |
3175eb9b | 1806 | cifs_tcon_dbg(VFS, "DFS capability contradicts DFS flag\n"); |
ae6f8dd4 PS |
1807 | |
1808 | if (tcon->seal && | |
afe6f653 | 1809 | !(server->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION)) |
3175eb9b | 1810 | cifs_tcon_dbg(VFS, "Encryption is requested but not supported\n"); |
ae6f8dd4 | 1811 | |
de9f68df | 1812 | init_copy_chunk_defaults(tcon); |
afe6f653 RS |
1813 | if (server->ops->validate_negotiate) |
1814 | rc = server->ops->validate_negotiate(xid, tcon); | |
faaf946a | 1815 | tcon_exit: |
f8af49dd | 1816 | |
faaf946a PS |
1817 | free_rsp_buf(resp_buftype, rsp); |
1818 | kfree(unc_path); | |
1819 | return rc; | |
1820 | ||
1821 | tcon_error_exit: | |
49f466bd | 1822 | if (rsp && rsp->sync_hdr.Status == STATUS_BAD_NETWORK_NAME) { |
3175eb9b | 1823 | cifs_tcon_dbg(VFS, "BAD_NETWORK_NAME: %s\n", tree); |
faaf946a PS |
1824 | } |
1825 | goto tcon_exit; | |
1826 | } | |
1827 | ||
1828 | int | |
1829 | SMB2_tdis(const unsigned int xid, struct cifs_tcon *tcon) | |
1830 | { | |
40eff45b | 1831 | struct smb_rqst rqst; |
faaf946a PS |
1832 | struct smb2_tree_disconnect_req *req; /* response is trivial */ |
1833 | int rc = 0; | |
faaf946a | 1834 | struct cifs_ses *ses = tcon->ses; |
7fb8986e | 1835 | int flags = 0; |
4eecf4cf RS |
1836 | unsigned int total_len; |
1837 | struct kvec iov[1]; | |
1838 | struct kvec rsp_iov; | |
1839 | int resp_buf_type; | |
faaf946a | 1840 | |
f96637be | 1841 | cifs_dbg(FYI, "Tree Disconnect\n"); |
faaf946a | 1842 | |
68a6afa7 | 1843 | if (!ses || !(ses->server)) |
faaf946a PS |
1844 | return -EIO; |
1845 | ||
1846 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) | |
1847 | return 0; | |
1848 | ||
d9191319 | 1849 | close_shroot_lease(&tcon->crfid); |
72e73c78 | 1850 | |
352d96f3 AA |
1851 | rc = smb2_plain_req_init(SMB2_TREE_DISCONNECT, tcon, ses->server, |
1852 | (void **) &req, | |
1853 | &total_len); | |
faaf946a PS |
1854 | if (rc) |
1855 | return rc; | |
1856 | ||
5a77e75f | 1857 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
1858 | flags |= CIFS_TRANSFORM_REQ; |
1859 | ||
392e1c5d | 1860 | flags |= CIFS_NO_RSP_BUF; |
4eecf4cf RS |
1861 | |
1862 | iov[0].iov_base = (char *)req; | |
1863 | iov[0].iov_len = total_len; | |
1864 | ||
40eff45b RS |
1865 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
1866 | rqst.rq_iov = iov; | |
1867 | rqst.rq_nvec = 1; | |
1868 | ||
352d96f3 AA |
1869 | rc = cifs_send_recv(xid, ses, ses->server, |
1870 | &rqst, &resp_buf_type, flags, &rsp_iov); | |
da502f7d | 1871 | cifs_small_buf_release(req); |
faaf946a PS |
1872 | if (rc) |
1873 | cifs_stats_fail_inc(tcon, SMB2_TREE_DISCONNECT_HE); | |
1874 | ||
1875 | return rc; | |
1876 | } | |
2503a0db | 1877 | |
b8c32dbb | 1878 | |
63eb3def PS |
1879 | static struct create_durable * |
1880 | create_durable_buf(void) | |
1881 | { | |
1882 | struct create_durable *buf; | |
1883 | ||
1884 | buf = kzalloc(sizeof(struct create_durable), GFP_KERNEL); | |
1885 | if (!buf) | |
1886 | return NULL; | |
1887 | ||
1888 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
9cbc0b73 | 1889 | (struct create_durable, Data)); |
63eb3def PS |
1890 | buf->ccontext.DataLength = cpu_to_le32(16); |
1891 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
1892 | (struct create_durable, Name)); | |
1893 | buf->ccontext.NameLength = cpu_to_le16(4); | |
12197a7f | 1894 | /* SMB2_CREATE_DURABLE_HANDLE_REQUEST is "DHnQ" */ |
63eb3def PS |
1895 | buf->Name[0] = 'D'; |
1896 | buf->Name[1] = 'H'; | |
1897 | buf->Name[2] = 'n'; | |
1898 | buf->Name[3] = 'Q'; | |
1899 | return buf; | |
1900 | } | |
1901 | ||
9cbc0b73 PS |
1902 | static struct create_durable * |
1903 | create_reconnect_durable_buf(struct cifs_fid *fid) | |
1904 | { | |
1905 | struct create_durable *buf; | |
1906 | ||
1907 | buf = kzalloc(sizeof(struct create_durable), GFP_KERNEL); | |
1908 | if (!buf) | |
1909 | return NULL; | |
1910 | ||
1911 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
1912 | (struct create_durable, Data)); | |
1913 | buf->ccontext.DataLength = cpu_to_le32(16); | |
1914 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
1915 | (struct create_durable, Name)); | |
1916 | buf->ccontext.NameLength = cpu_to_le16(4); | |
1917 | buf->Data.Fid.PersistentFileId = fid->persistent_fid; | |
1918 | buf->Data.Fid.VolatileFileId = fid->volatile_fid; | |
12197a7f | 1919 | /* SMB2_CREATE_DURABLE_HANDLE_RECONNECT is "DHnC" */ |
9cbc0b73 PS |
1920 | buf->Name[0] = 'D'; |
1921 | buf->Name[1] = 'H'; | |
1922 | buf->Name[2] = 'n'; | |
1923 | buf->Name[3] = 'C'; | |
1924 | return buf; | |
1925 | } | |
1926 | ||
89a5bfa3 SF |
1927 | static void |
1928 | parse_query_id_ctxt(struct create_context *cc, struct smb2_file_all_info *buf) | |
1929 | { | |
1930 | struct create_on_disk_id *pdisk_id = (struct create_on_disk_id *)cc; | |
1931 | ||
1932 | cifs_dbg(FYI, "parse query id context 0x%llx 0x%llx\n", | |
1933 | pdisk_id->DiskFileId, pdisk_id->VolumeId); | |
1934 | buf->IndexNumber = pdisk_id->DiskFileId; | |
1935 | } | |
1936 | ||
ab3459d8 | 1937 | static void |
69dda305 AA |
1938 | parse_posix_ctxt(struct create_context *cc, struct smb2_file_all_info *info, |
1939 | struct create_posix_rsp *posix) | |
ab3459d8 | 1940 | { |
69dda305 AA |
1941 | int sid_len; |
1942 | u8 *beg = (u8 *)cc + le16_to_cpu(cc->DataOffset); | |
1943 | u8 *end = beg + le32_to_cpu(cc->DataLength); | |
1944 | u8 *sid; | |
ab3459d8 | 1945 | |
69dda305 AA |
1946 | memset(posix, 0, sizeof(*posix)); |
1947 | ||
1948 | posix->nlink = le32_to_cpu(*(__le32 *)(beg + 0)); | |
1949 | posix->reparse_tag = le32_to_cpu(*(__le32 *)(beg + 4)); | |
1950 | posix->mode = le32_to_cpu(*(__le32 *)(beg + 8)); | |
1951 | ||
1952 | sid = beg + 12; | |
1953 | sid_len = posix_info_sid_size(sid, end); | |
1954 | if (sid_len < 0) { | |
1955 | cifs_dbg(VFS, "bad owner sid in posix create response\n"); | |
1956 | return; | |
1957 | } | |
1958 | memcpy(&posix->owner, sid, sid_len); | |
1959 | ||
1960 | sid = sid + sid_len; | |
1961 | sid_len = posix_info_sid_size(sid, end); | |
1962 | if (sid_len < 0) { | |
1963 | cifs_dbg(VFS, "bad group sid in posix create response\n"); | |
1964 | return; | |
1965 | } | |
1966 | memcpy(&posix->group, sid, sid_len); | |
2e8af978 | 1967 | |
69dda305 AA |
1968 | cifs_dbg(FYI, "nlink=%d mode=%o reparse_tag=%x\n", |
1969 | posix->nlink, posix->mode, posix->reparse_tag); | |
ab3459d8 SF |
1970 | } |
1971 | ||
89a5bfa3 SF |
1972 | void |
1973 | smb2_parse_contexts(struct TCP_Server_Info *server, | |
69dda305 AA |
1974 | struct smb2_create_rsp *rsp, |
1975 | unsigned int *epoch, char *lease_key, __u8 *oplock, | |
1976 | struct smb2_file_all_info *buf, | |
1977 | struct create_posix_rsp *posix) | |
b8c32dbb PS |
1978 | { |
1979 | char *data_offset; | |
b5c7cde3 | 1980 | struct create_context *cc; |
deb7deff JM |
1981 | unsigned int next; |
1982 | unsigned int remaining; | |
fd554396 | 1983 | char *name; |
3ece60e3 CIK |
1984 | static const char smb3_create_tag_posix[] = { |
1985 | 0x93, 0xAD, 0x25, 0x50, 0x9C, | |
1986 | 0xB4, 0x11, 0xE7, 0xB4, 0x23, 0x83, | |
1987 | 0xDE, 0x96, 0x8B, 0xCD, 0x7C | |
1988 | }; | |
b8c32dbb | 1989 | |
89a5bfa3 | 1990 | *oplock = 0; |
1fc6ad2f | 1991 | data_offset = (char *)rsp + le32_to_cpu(rsp->CreateContextsOffset); |
deb7deff | 1992 | remaining = le32_to_cpu(rsp->CreateContextsLength); |
b5c7cde3 | 1993 | cc = (struct create_context *)data_offset; |
89a5bfa3 SF |
1994 | |
1995 | /* Initialize inode number to 0 in case no valid data in qfid context */ | |
1996 | if (buf) | |
1997 | buf->IndexNumber = 0; | |
1998 | ||
deb7deff | 1999 | while (remaining >= sizeof(struct create_context)) { |
b5c7cde3 | 2000 | name = le16_to_cpu(cc->NameOffset) + (char *)cc; |
deb7deff | 2001 | if (le16_to_cpu(cc->NameLength) == 4 && |
89a5bfa3 SF |
2002 | strncmp(name, SMB2_CREATE_REQUEST_LEASE, 4) == 0) |
2003 | *oplock = server->ops->parse_lease_buf(cc, epoch, | |
2004 | lease_key); | |
2005 | else if (buf && (le16_to_cpu(cc->NameLength) == 4) && | |
2006 | strncmp(name, SMB2_CREATE_QUERY_ON_DISK_ID, 4) == 0) | |
2007 | parse_query_id_ctxt(cc, buf); | |
ab3459d8 | 2008 | else if ((le16_to_cpu(cc->NameLength) == 16)) { |
69dda305 AA |
2009 | if (posix && |
2010 | memcmp(name, smb3_create_tag_posix, 16) == 0) | |
2011 | parse_posix_ctxt(cc, buf, posix); | |
ab3459d8 SF |
2012 | } |
2013 | /* else { | |
2014 | cifs_dbg(FYI, "Context not matched with len %d\n", | |
2015 | le16_to_cpu(cc->NameLength)); | |
2016 | cifs_dump_mem("Cctxt name: ", name, 4); | |
2017 | } */ | |
deb7deff JM |
2018 | |
2019 | next = le32_to_cpu(cc->Next); | |
2020 | if (!next) | |
2021 | break; | |
2022 | remaining -= next; | |
2023 | cc = (struct create_context *)((char *)cc + next); | |
2024 | } | |
b8c32dbb | 2025 | |
89a5bfa3 SF |
2026 | if (rsp->OplockLevel != SMB2_OPLOCK_LEVEL_LEASE) |
2027 | *oplock = rsp->OplockLevel; | |
2028 | ||
2029 | return; | |
b8c32dbb PS |
2030 | } |
2031 | ||
d22cbfec | 2032 | static int |
a41a28bd | 2033 | add_lease_context(struct TCP_Server_Info *server, struct kvec *iov, |
729c0c9d | 2034 | unsigned int *num_iovec, u8 *lease_key, __u8 *oplock) |
d22cbfec PS |
2035 | { |
2036 | struct smb2_create_req *req = iov[0].iov_base; | |
2037 | unsigned int num = *num_iovec; | |
2038 | ||
729c0c9d | 2039 | iov[num].iov_base = server->ops->create_lease_buf(lease_key, *oplock); |
d22cbfec PS |
2040 | if (iov[num].iov_base == NULL) |
2041 | return -ENOMEM; | |
a41a28bd | 2042 | iov[num].iov_len = server->vals->create_lease_size; |
d22cbfec PS |
2043 | req->RequestedOplockLevel = SMB2_OPLOCK_LEVEL_LEASE; |
2044 | if (!req->CreateContextsOffset) | |
2045 | req->CreateContextsOffset = cpu_to_le32( | |
4f33bc35 | 2046 | sizeof(struct smb2_create_req) + |
d22cbfec | 2047 | iov[num - 1].iov_len); |
a41a28bd PS |
2048 | le32_add_cpu(&req->CreateContextsLength, |
2049 | server->vals->create_lease_size); | |
d22cbfec PS |
2050 | *num_iovec = num + 1; |
2051 | return 0; | |
2052 | } | |
2053 | ||
b56eae4d | 2054 | static struct create_durable_v2 * |
ca567eb2 | 2055 | create_durable_v2_buf(struct cifs_open_parms *oparms) |
b56eae4d | 2056 | { |
ca567eb2 | 2057 | struct cifs_fid *pfid = oparms->fid; |
b56eae4d SF |
2058 | struct create_durable_v2 *buf; |
2059 | ||
2060 | buf = kzalloc(sizeof(struct create_durable_v2), GFP_KERNEL); | |
2061 | if (!buf) | |
2062 | return NULL; | |
2063 | ||
2064 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
2065 | (struct create_durable_v2, dcontext)); | |
2066 | buf->ccontext.DataLength = cpu_to_le32(sizeof(struct durable_context_v2)); | |
2067 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
2068 | (struct create_durable_v2, Name)); | |
2069 | buf->ccontext.NameLength = cpu_to_le16(4); | |
2070 | ||
ca567eb2 SF |
2071 | /* |
2072 | * NB: Handle timeout defaults to 0, which allows server to choose | |
2073 | * (most servers default to 120 seconds) and most clients default to 0. | |
2074 | * This can be overridden at mount ("handletimeout=") if the user wants | |
2075 | * a different persistent (or resilient) handle timeout for all opens | |
2076 | * opens on a particular SMB3 mount. | |
2077 | */ | |
2078 | buf->dcontext.Timeout = cpu_to_le32(oparms->tcon->handle_timeout); | |
b56eae4d | 2079 | buf->dcontext.Flags = cpu_to_le32(SMB2_DHANDLE_FLAG_PERSISTENT); |
fa70b87c | 2080 | generate_random_uuid(buf->dcontext.CreateGuid); |
b56eae4d SF |
2081 | memcpy(pfid->create_guid, buf->dcontext.CreateGuid, 16); |
2082 | ||
2083 | /* SMB2_CREATE_DURABLE_HANDLE_REQUEST is "DH2Q" */ | |
2084 | buf->Name[0] = 'D'; | |
2085 | buf->Name[1] = 'H'; | |
2086 | buf->Name[2] = '2'; | |
2087 | buf->Name[3] = 'Q'; | |
2088 | return buf; | |
2089 | } | |
2090 | ||
2091 | static struct create_durable_handle_reconnect_v2 * | |
2092 | create_reconnect_durable_v2_buf(struct cifs_fid *fid) | |
2093 | { | |
2094 | struct create_durable_handle_reconnect_v2 *buf; | |
2095 | ||
2096 | buf = kzalloc(sizeof(struct create_durable_handle_reconnect_v2), | |
2097 | GFP_KERNEL); | |
2098 | if (!buf) | |
2099 | return NULL; | |
2100 | ||
2101 | buf->ccontext.DataOffset = | |
2102 | cpu_to_le16(offsetof(struct create_durable_handle_reconnect_v2, | |
2103 | dcontext)); | |
2104 | buf->ccontext.DataLength = | |
2105 | cpu_to_le32(sizeof(struct durable_reconnect_context_v2)); | |
2106 | buf->ccontext.NameOffset = | |
2107 | cpu_to_le16(offsetof(struct create_durable_handle_reconnect_v2, | |
2108 | Name)); | |
2109 | buf->ccontext.NameLength = cpu_to_le16(4); | |
2110 | ||
2111 | buf->dcontext.Fid.PersistentFileId = fid->persistent_fid; | |
2112 | buf->dcontext.Fid.VolatileFileId = fid->volatile_fid; | |
2113 | buf->dcontext.Flags = cpu_to_le32(SMB2_DHANDLE_FLAG_PERSISTENT); | |
2114 | memcpy(buf->dcontext.CreateGuid, fid->create_guid, 16); | |
2115 | ||
2116 | /* SMB2_CREATE_DURABLE_HANDLE_RECONNECT_V2 is "DH2C" */ | |
2117 | buf->Name[0] = 'D'; | |
2118 | buf->Name[1] = 'H'; | |
2119 | buf->Name[2] = '2'; | |
2120 | buf->Name[3] = 'C'; | |
2121 | return buf; | |
2122 | } | |
2123 | ||
63eb3def | 2124 | static int |
b56eae4d SF |
2125 | add_durable_v2_context(struct kvec *iov, unsigned int *num_iovec, |
2126 | struct cifs_open_parms *oparms) | |
2127 | { | |
2128 | struct smb2_create_req *req = iov[0].iov_base; | |
2129 | unsigned int num = *num_iovec; | |
2130 | ||
ca567eb2 | 2131 | iov[num].iov_base = create_durable_v2_buf(oparms); |
b56eae4d SF |
2132 | if (iov[num].iov_base == NULL) |
2133 | return -ENOMEM; | |
2134 | iov[num].iov_len = sizeof(struct create_durable_v2); | |
2135 | if (!req->CreateContextsOffset) | |
2136 | req->CreateContextsOffset = | |
4f33bc35 | 2137 | cpu_to_le32(sizeof(struct smb2_create_req) + |
b56eae4d SF |
2138 | iov[1].iov_len); |
2139 | le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable_v2)); | |
b56eae4d SF |
2140 | *num_iovec = num + 1; |
2141 | return 0; | |
2142 | } | |
2143 | ||
2144 | static int | |
2145 | add_durable_reconnect_v2_context(struct kvec *iov, unsigned int *num_iovec, | |
9cbc0b73 | 2146 | struct cifs_open_parms *oparms) |
63eb3def PS |
2147 | { |
2148 | struct smb2_create_req *req = iov[0].iov_base; | |
2149 | unsigned int num = *num_iovec; | |
2150 | ||
b56eae4d SF |
2151 | /* indicate that we don't need to relock the file */ |
2152 | oparms->reconnect = false; | |
2153 | ||
2154 | iov[num].iov_base = create_reconnect_durable_v2_buf(oparms->fid); | |
2155 | if (iov[num].iov_base == NULL) | |
2156 | return -ENOMEM; | |
2157 | iov[num].iov_len = sizeof(struct create_durable_handle_reconnect_v2); | |
2158 | if (!req->CreateContextsOffset) | |
2159 | req->CreateContextsOffset = | |
4f33bc35 | 2160 | cpu_to_le32(sizeof(struct smb2_create_req) + |
b56eae4d SF |
2161 | iov[1].iov_len); |
2162 | le32_add_cpu(&req->CreateContextsLength, | |
2163 | sizeof(struct create_durable_handle_reconnect_v2)); | |
b56eae4d SF |
2164 | *num_iovec = num + 1; |
2165 | return 0; | |
2166 | } | |
2167 | ||
2168 | static int | |
2169 | add_durable_context(struct kvec *iov, unsigned int *num_iovec, | |
2170 | struct cifs_open_parms *oparms, bool use_persistent) | |
2171 | { | |
2172 | struct smb2_create_req *req = iov[0].iov_base; | |
2173 | unsigned int num = *num_iovec; | |
2174 | ||
2175 | if (use_persistent) { | |
2176 | if (oparms->reconnect) | |
2177 | return add_durable_reconnect_v2_context(iov, num_iovec, | |
2178 | oparms); | |
2179 | else | |
2180 | return add_durable_v2_context(iov, num_iovec, oparms); | |
2181 | } | |
2182 | ||
9cbc0b73 PS |
2183 | if (oparms->reconnect) { |
2184 | iov[num].iov_base = create_reconnect_durable_buf(oparms->fid); | |
2185 | /* indicate that we don't need to relock the file */ | |
2186 | oparms->reconnect = false; | |
2187 | } else | |
2188 | iov[num].iov_base = create_durable_buf(); | |
63eb3def PS |
2189 | if (iov[num].iov_base == NULL) |
2190 | return -ENOMEM; | |
2191 | iov[num].iov_len = sizeof(struct create_durable); | |
2192 | if (!req->CreateContextsOffset) | |
2193 | req->CreateContextsOffset = | |
4f33bc35 | 2194 | cpu_to_le32(sizeof(struct smb2_create_req) + |
63eb3def | 2195 | iov[1].iov_len); |
31f92e9a | 2196 | le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable)); |
63eb3def PS |
2197 | *num_iovec = num + 1; |
2198 | return 0; | |
2199 | } | |
2200 | ||
cdeaf9d0 SF |
2201 | /* See MS-SMB2 2.2.13.2.7 */ |
2202 | static struct crt_twarp_ctxt * | |
2203 | create_twarp_buf(__u64 timewarp) | |
2204 | { | |
2205 | struct crt_twarp_ctxt *buf; | |
2206 | ||
2207 | buf = kzalloc(sizeof(struct crt_twarp_ctxt), GFP_KERNEL); | |
2208 | if (!buf) | |
2209 | return NULL; | |
2210 | ||
2211 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
2212 | (struct crt_twarp_ctxt, Timestamp)); | |
2213 | buf->ccontext.DataLength = cpu_to_le32(8); | |
2214 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
2215 | (struct crt_twarp_ctxt, Name)); | |
2216 | buf->ccontext.NameLength = cpu_to_le16(4); | |
2217 | /* SMB2_CREATE_TIMEWARP_TOKEN is "TWrp" */ | |
2218 | buf->Name[0] = 'T'; | |
2219 | buf->Name[1] = 'W'; | |
2220 | buf->Name[2] = 'r'; | |
2221 | buf->Name[3] = 'p'; | |
2222 | buf->Timestamp = cpu_to_le64(timewarp); | |
2223 | return buf; | |
2224 | } | |
2225 | ||
2226 | /* See MS-SMB2 2.2.13.2.7 */ | |
2227 | static int | |
2228 | add_twarp_context(struct kvec *iov, unsigned int *num_iovec, __u64 timewarp) | |
2229 | { | |
2230 | struct smb2_create_req *req = iov[0].iov_base; | |
2231 | unsigned int num = *num_iovec; | |
2232 | ||
2233 | iov[num].iov_base = create_twarp_buf(timewarp); | |
2234 | if (iov[num].iov_base == NULL) | |
2235 | return -ENOMEM; | |
2236 | iov[num].iov_len = sizeof(struct crt_twarp_ctxt); | |
2237 | if (!req->CreateContextsOffset) | |
2238 | req->CreateContextsOffset = cpu_to_le32( | |
2239 | sizeof(struct smb2_create_req) + | |
2240 | iov[num - 1].iov_len); | |
2241 | le32_add_cpu(&req->CreateContextsLength, sizeof(struct crt_twarp_ctxt)); | |
2242 | *num_iovec = num + 1; | |
2243 | return 0; | |
2244 | } | |
2245 | ||
975221ec SF |
2246 | /* See See http://technet.microsoft.com/en-us/library/hh509017(v=ws.10).aspx */ |
2247 | static void setup_owner_group_sids(char *buf) | |
2248 | { | |
2249 | struct owner_group_sids *sids = (struct owner_group_sids *)buf; | |
2250 | ||
2251 | /* Populate the user ownership fields S-1-5-88-1 */ | |
2252 | sids->owner.Revision = 1; | |
2253 | sids->owner.NumAuth = 3; | |
2254 | sids->owner.Authority[5] = 5; | |
2255 | sids->owner.SubAuthorities[0] = cpu_to_le32(88); | |
2256 | sids->owner.SubAuthorities[1] = cpu_to_le32(1); | |
2257 | sids->owner.SubAuthorities[2] = cpu_to_le32(current_fsuid().val); | |
2258 | ||
2259 | /* Populate the group ownership fields S-1-5-88-2 */ | |
2260 | sids->group.Revision = 1; | |
2261 | sids->group.NumAuth = 3; | |
2262 | sids->group.Authority[5] = 5; | |
2263 | sids->group.SubAuthorities[0] = cpu_to_le32(88); | |
2264 | sids->group.SubAuthorities[1] = cpu_to_le32(2); | |
2265 | sids->group.SubAuthorities[2] = cpu_to_le32(current_fsgid().val); | |
a7a519a4 SF |
2266 | |
2267 | cifs_dbg(FYI, "owner S-1-5-88-1-%d, group S-1-5-88-2-%d\n", current_fsuid().val, current_fsgid().val); | |
975221ec SF |
2268 | } |
2269 | ||
fdef665b SF |
2270 | /* See MS-SMB2 2.2.13.2.2 and MS-DTYP 2.4.6 */ |
2271 | static struct crt_sd_ctxt * | |
975221ec | 2272 | create_sd_buf(umode_t mode, bool set_owner, unsigned int *len) |
fdef665b SF |
2273 | { |
2274 | struct crt_sd_ctxt *buf; | |
ea64370b RS |
2275 | __u8 *ptr, *aclptr; |
2276 | unsigned int acelen, acl_size, ace_count; | |
975221ec SF |
2277 | unsigned int owner_offset = 0; |
2278 | unsigned int group_offset = 0; | |
ea64370b | 2279 | struct smb3_acl acl; |
975221ec | 2280 | |
ea64370b | 2281 | *len = roundup(sizeof(struct crt_sd_ctxt) + (sizeof(struct cifs_ace) * 4), 8); |
975221ec SF |
2282 | |
2283 | if (set_owner) { | |
975221ec SF |
2284 | /* sizeof(struct owner_group_sids) is already multiple of 8 so no need to round */ |
2285 | *len += sizeof(struct owner_group_sids); | |
2286 | } | |
fdef665b | 2287 | |
fdef665b SF |
2288 | buf = kzalloc(*len, GFP_KERNEL); |
2289 | if (buf == NULL) | |
2290 | return buf; | |
2291 | ||
ea64370b | 2292 | ptr = (__u8 *)&buf[1]; |
975221ec | 2293 | if (set_owner) { |
ea64370b RS |
2294 | /* offset fields are from beginning of security descriptor not of create context */ |
2295 | owner_offset = ptr - (__u8 *)&buf->sd; | |
975221ec | 2296 | buf->sd.OffsetOwner = cpu_to_le32(owner_offset); |
ea64370b | 2297 | group_offset = owner_offset + offsetof(struct owner_group_sids, group); |
975221ec | 2298 | buf->sd.OffsetGroup = cpu_to_le32(group_offset); |
ea64370b RS |
2299 | |
2300 | setup_owner_group_sids(ptr); | |
2301 | ptr += sizeof(struct owner_group_sids); | |
975221ec SF |
2302 | } else { |
2303 | buf->sd.OffsetOwner = 0; | |
2304 | buf->sd.OffsetGroup = 0; | |
2305 | } | |
2306 | ||
ea64370b | 2307 | buf->ccontext.DataOffset = cpu_to_le16(offsetof(struct crt_sd_ctxt, sd)); |
975221ec | 2308 | buf->ccontext.NameOffset = cpu_to_le16(offsetof(struct crt_sd_ctxt, Name)); |
fdef665b SF |
2309 | buf->ccontext.NameLength = cpu_to_le16(4); |
2310 | /* SMB2_CREATE_SD_BUFFER_TOKEN is "SecD" */ | |
2311 | buf->Name[0] = 'S'; | |
2312 | buf->Name[1] = 'e'; | |
2313 | buf->Name[2] = 'c'; | |
2314 | buf->Name[3] = 'D'; | |
2315 | buf->sd.Revision = 1; /* Must be one see MS-DTYP 2.4.6 */ | |
ea64370b | 2316 | |
fdef665b SF |
2317 | /* |
2318 | * ACL is "self relative" ie ACL is stored in contiguous block of memory | |
2319 | * and "DP" ie the DACL is present | |
2320 | */ | |
2321 | buf->sd.Control = cpu_to_le16(ACL_CONTROL_SR | ACL_CONTROL_DP); | |
2322 | ||
2323 | /* offset owner, group and Sbz1 and SACL are all zero */ | |
ea64370b RS |
2324 | buf->sd.OffsetDacl = cpu_to_le32(ptr - (__u8 *)&buf->sd); |
2325 | /* Ship the ACL for now. we will copy it into buf later. */ | |
2326 | aclptr = ptr; | |
2327 | ptr += sizeof(struct cifs_acl); | |
fdef665b SF |
2328 | |
2329 | /* create one ACE to hold the mode embedded in reserved special SID */ | |
ea64370b RS |
2330 | acelen = setup_special_mode_ACE((struct cifs_ace *)ptr, (__u64)mode); |
2331 | ptr += acelen; | |
2332 | acl_size = acelen + sizeof(struct smb3_acl); | |
2333 | ace_count = 1; | |
975221ec SF |
2334 | |
2335 | if (set_owner) { | |
2336 | /* we do not need to reallocate buffer to add the two more ACEs. plenty of space */ | |
ea64370b RS |
2337 | acelen = setup_special_user_owner_ACE((struct cifs_ace *)ptr); |
2338 | ptr += acelen; | |
2339 | acl_size += acelen; | |
2340 | ace_count += 1; | |
2341 | } | |
975221ec | 2342 | |
643fbcee | 2343 | /* and one more ACE to allow access for authenticated users */ |
ea64370b RS |
2344 | acelen = setup_authusers_ACE((struct cifs_ace *)ptr); |
2345 | ptr += acelen; | |
2346 | acl_size += acelen; | |
2347 | ace_count += 1; | |
2348 | ||
2349 | acl.AclRevision = ACL_REVISION; /* See 2.4.4.1 of MS-DTYP */ | |
2350 | acl.AclSize = cpu_to_le16(acl_size); | |
2351 | acl.AceCount = cpu_to_le16(ace_count); | |
2352 | memcpy(aclptr, &acl, sizeof(struct cifs_acl)); | |
2353 | ||
2354 | buf->ccontext.DataLength = cpu_to_le32(ptr - (__u8 *)&buf->sd); | |
2355 | *len = ptr - (__u8 *)buf; | |
975221ec | 2356 | |
fdef665b SF |
2357 | return buf; |
2358 | } | |
2359 | ||
2360 | static int | |
975221ec | 2361 | add_sd_context(struct kvec *iov, unsigned int *num_iovec, umode_t mode, bool set_owner) |
fdef665b SF |
2362 | { |
2363 | struct smb2_create_req *req = iov[0].iov_base; | |
2364 | unsigned int num = *num_iovec; | |
2365 | unsigned int len = 0; | |
2366 | ||
975221ec | 2367 | iov[num].iov_base = create_sd_buf(mode, set_owner, &len); |
fdef665b SF |
2368 | if (iov[num].iov_base == NULL) |
2369 | return -ENOMEM; | |
2370 | iov[num].iov_len = len; | |
2371 | if (!req->CreateContextsOffset) | |
2372 | req->CreateContextsOffset = cpu_to_le32( | |
2373 | sizeof(struct smb2_create_req) + | |
2374 | iov[num - 1].iov_len); | |
2375 | le32_add_cpu(&req->CreateContextsLength, len); | |
2376 | *num_iovec = num + 1; | |
2377 | return 0; | |
2378 | } | |
2379 | ||
ff2a09e9 SF |
2380 | static struct crt_query_id_ctxt * |
2381 | create_query_id_buf(void) | |
2382 | { | |
2383 | struct crt_query_id_ctxt *buf; | |
2384 | ||
2385 | buf = kzalloc(sizeof(struct crt_query_id_ctxt), GFP_KERNEL); | |
2386 | if (!buf) | |
2387 | return NULL; | |
2388 | ||
2389 | buf->ccontext.DataOffset = cpu_to_le16(0); | |
2390 | buf->ccontext.DataLength = cpu_to_le32(0); | |
2391 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
2392 | (struct crt_query_id_ctxt, Name)); | |
2393 | buf->ccontext.NameLength = cpu_to_le16(4); | |
2394 | /* SMB2_CREATE_QUERY_ON_DISK_ID is "QFid" */ | |
2395 | buf->Name[0] = 'Q'; | |
2396 | buf->Name[1] = 'F'; | |
2397 | buf->Name[2] = 'i'; | |
2398 | buf->Name[3] = 'd'; | |
2399 | return buf; | |
2400 | } | |
2401 | ||
2402 | /* See MS-SMB2 2.2.13.2.9 */ | |
2403 | static int | |
2404 | add_query_id_context(struct kvec *iov, unsigned int *num_iovec) | |
2405 | { | |
2406 | struct smb2_create_req *req = iov[0].iov_base; | |
2407 | unsigned int num = *num_iovec; | |
2408 | ||
2409 | iov[num].iov_base = create_query_id_buf(); | |
2410 | if (iov[num].iov_base == NULL) | |
2411 | return -ENOMEM; | |
2412 | iov[num].iov_len = sizeof(struct crt_query_id_ctxt); | |
2413 | if (!req->CreateContextsOffset) | |
2414 | req->CreateContextsOffset = cpu_to_le32( | |
2415 | sizeof(struct smb2_create_req) + | |
2416 | iov[num - 1].iov_len); | |
2417 | le32_add_cpu(&req->CreateContextsLength, sizeof(struct crt_query_id_ctxt)); | |
2418 | *num_iovec = num + 1; | |
2419 | return 0; | |
2420 | } | |
2421 | ||
f0712928 AA |
2422 | static int |
2423 | alloc_path_with_tree_prefix(__le16 **out_path, int *out_size, int *out_len, | |
2424 | const char *treename, const __le16 *path) | |
2425 | { | |
2426 | int treename_len, path_len; | |
2427 | struct nls_table *cp; | |
2428 | const __le16 sep[] = {cpu_to_le16('\\'), cpu_to_le16(0x0000)}; | |
2429 | ||
2430 | /* | |
2431 | * skip leading "\\" | |
2432 | */ | |
2433 | treename_len = strlen(treename); | |
2434 | if (treename_len < 2 || !(treename[0] == '\\' && treename[1] == '\\')) | |
2435 | return -EINVAL; | |
2436 | ||
2437 | treename += 2; | |
2438 | treename_len -= 2; | |
2439 | ||
2440 | path_len = UniStrnlen((wchar_t *)path, PATH_MAX); | |
2441 | ||
2442 | /* | |
2443 | * make room for one path separator between the treename and | |
2444 | * path | |
2445 | */ | |
2446 | *out_len = treename_len + 1 + path_len; | |
2447 | ||
2448 | /* | |
2449 | * final path needs to be null-terminated UTF16 with a | |
2450 | * size aligned to 8 | |
2451 | */ | |
2452 | ||
2453 | *out_size = roundup((*out_len+1)*2, 8); | |
2454 | *out_path = kzalloc(*out_size, GFP_KERNEL); | |
2455 | if (!*out_path) | |
2456 | return -ENOMEM; | |
2457 | ||
2458 | cp = load_nls_default(); | |
2459 | cifs_strtoUTF16(*out_path, treename, treename_len, cp); | |
2460 | UniStrcat(*out_path, sep); | |
2461 | UniStrcat(*out_path, path); | |
2462 | unload_nls(cp); | |
2463 | ||
2464 | return 0; | |
2465 | } | |
2466 | ||
bea851b8 SF |
2467 | int smb311_posix_mkdir(const unsigned int xid, struct inode *inode, |
2468 | umode_t mode, struct cifs_tcon *tcon, | |
2469 | const char *full_path, | |
2470 | struct cifs_sb_info *cifs_sb) | |
2471 | { | |
2472 | struct smb_rqst rqst; | |
2473 | struct smb2_create_req *req; | |
256b4c3f | 2474 | struct smb2_create_rsp *rsp = NULL; |
bea851b8 SF |
2475 | struct cifs_ses *ses = tcon->ses; |
2476 | struct kvec iov[3]; /* make sure at least one for each open context */ | |
2477 | struct kvec rsp_iov = {NULL, 0}; | |
2478 | int resp_buftype; | |
2479 | int uni_path_len; | |
2480 | __le16 *copy_path = NULL; | |
2481 | int copy_size; | |
2482 | int rc = 0; | |
2483 | unsigned int n_iov = 2; | |
2484 | __u32 file_attributes = 0; | |
2485 | char *pc_buf = NULL; | |
2486 | int flags = 0; | |
2487 | unsigned int total_len; | |
256b4c3f | 2488 | __le16 *utf16_path = NULL; |
352d96f3 | 2489 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
bea851b8 SF |
2490 | |
2491 | cifs_dbg(FYI, "mkdir\n"); | |
2492 | ||
256b4c3f AA |
2493 | /* resource #1: path allocation */ |
2494 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); | |
2495 | if (!utf16_path) | |
2496 | return -ENOMEM; | |
2497 | ||
352d96f3 | 2498 | if (!ses || !server) { |
256b4c3f AA |
2499 | rc = -EIO; |
2500 | goto err_free_path; | |
2501 | } | |
bea851b8 | 2502 | |
256b4c3f | 2503 | /* resource #2: request */ |
352d96f3 AA |
2504 | rc = smb2_plain_req_init(SMB2_CREATE, tcon, server, |
2505 | (void **) &req, &total_len); | |
bea851b8 | 2506 | if (rc) |
256b4c3f AA |
2507 | goto err_free_path; |
2508 | ||
bea851b8 SF |
2509 | |
2510 | if (smb3_encryption_required(tcon)) | |
2511 | flags |= CIFS_TRANSFORM_REQ; | |
2512 | ||
bea851b8 SF |
2513 | req->ImpersonationLevel = IL_IMPERSONATION; |
2514 | req->DesiredAccess = cpu_to_le32(FILE_WRITE_ATTRIBUTES); | |
2515 | /* File attributes ignored on open (used in create though) */ | |
2516 | req->FileAttributes = cpu_to_le32(file_attributes); | |
2517 | req->ShareAccess = FILE_SHARE_ALL_LE; | |
2518 | req->CreateDisposition = cpu_to_le32(FILE_CREATE); | |
2519 | req->CreateOptions = cpu_to_le32(CREATE_NOT_FILE); | |
2520 | ||
2521 | iov[0].iov_base = (char *)req; | |
2522 | /* -1 since last byte is buf[0] which is sent below (path) */ | |
2523 | iov[0].iov_len = total_len - 1; | |
2524 | ||
2525 | req->NameOffset = cpu_to_le16(sizeof(struct smb2_create_req)); | |
2526 | ||
2527 | /* [MS-SMB2] 2.2.13 NameOffset: | |
2528 | * If SMB2_FLAGS_DFS_OPERATIONS is set in the Flags field of | |
2529 | * the SMB2 header, the file name includes a prefix that will | |
2530 | * be processed during DFS name normalization as specified in | |
2531 | * section 3.3.5.9. Otherwise, the file name is relative to | |
2532 | * the share that is identified by the TreeId in the SMB2 | |
2533 | * header. | |
2534 | */ | |
2535 | if (tcon->share_flags & SHI1005_FLAGS_DFS) { | |
2536 | int name_len; | |
2537 | ||
2538 | req->sync_hdr.Flags |= SMB2_FLAGS_DFS_OPERATIONS; | |
2539 | rc = alloc_path_with_tree_prefix(©_path, ©_size, | |
2540 | &name_len, | |
256b4c3f AA |
2541 | tcon->treeName, utf16_path); |
2542 | if (rc) | |
2543 | goto err_free_req; | |
2544 | ||
bea851b8 SF |
2545 | req->NameLength = cpu_to_le16(name_len * 2); |
2546 | uni_path_len = copy_size; | |
256b4c3f AA |
2547 | /* free before overwriting resource */ |
2548 | kfree(utf16_path); | |
2549 | utf16_path = copy_path; | |
bea851b8 | 2550 | } else { |
256b4c3f | 2551 | uni_path_len = (2 * UniStrnlen((wchar_t *)utf16_path, PATH_MAX)) + 2; |
bea851b8 SF |
2552 | /* MUST set path len (NameLength) to 0 opening root of share */ |
2553 | req->NameLength = cpu_to_le16(uni_path_len - 2); | |
2554 | if (uni_path_len % 8 != 0) { | |
2555 | copy_size = roundup(uni_path_len, 8); | |
2556 | copy_path = kzalloc(copy_size, GFP_KERNEL); | |
2557 | if (!copy_path) { | |
256b4c3f AA |
2558 | rc = -ENOMEM; |
2559 | goto err_free_req; | |
bea851b8 | 2560 | } |
256b4c3f | 2561 | memcpy((char *)copy_path, (const char *)utf16_path, |
bea851b8 SF |
2562 | uni_path_len); |
2563 | uni_path_len = copy_size; | |
256b4c3f AA |
2564 | /* free before overwriting resource */ |
2565 | kfree(utf16_path); | |
2566 | utf16_path = copy_path; | |
bea851b8 SF |
2567 | } |
2568 | } | |
2569 | ||
2570 | iov[1].iov_len = uni_path_len; | |
256b4c3f | 2571 | iov[1].iov_base = utf16_path; |
bea851b8 SF |
2572 | req->RequestedOplockLevel = SMB2_OPLOCK_LEVEL_NONE; |
2573 | ||
2574 | if (tcon->posix_extensions) { | |
256b4c3f | 2575 | /* resource #3: posix buf */ |
bea851b8 | 2576 | rc = add_posix_context(iov, &n_iov, mode); |
256b4c3f AA |
2577 | if (rc) |
2578 | goto err_free_req; | |
bea851b8 SF |
2579 | pc_buf = iov[n_iov-1].iov_base; |
2580 | } | |
2581 | ||
2582 | ||
2583 | memset(&rqst, 0, sizeof(struct smb_rqst)); | |
2584 | rqst.rq_iov = iov; | |
2585 | rqst.rq_nvec = n_iov; | |
2586 | ||
d2f15428 | 2587 | /* no need to inc num_remote_opens because we close it just below */ |
efe2e9f3 SF |
2588 | trace_smb3_posix_mkdir_enter(xid, tcon->tid, ses->Suid, CREATE_NOT_FILE, |
2589 | FILE_WRITE_ATTRIBUTES); | |
256b4c3f | 2590 | /* resource #4: response buffer */ |
352d96f3 AA |
2591 | rc = cifs_send_recv(xid, ses, server, |
2592 | &rqst, &resp_buftype, flags, &rsp_iov); | |
256b4c3f | 2593 | if (rc) { |
bea851b8 SF |
2594 | cifs_stats_fail_inc(tcon, SMB2_CREATE_HE); |
2595 | trace_smb3_posix_mkdir_err(xid, tcon->tid, ses->Suid, | |
256b4c3f AA |
2596 | CREATE_NOT_FILE, |
2597 | FILE_WRITE_ATTRIBUTES, rc); | |
2598 | goto err_free_rsp_buf; | |
2599 | } | |
2600 | ||
2601 | rsp = (struct smb2_create_rsp *)rsp_iov.iov_base; | |
2602 | trace_smb3_posix_mkdir_done(xid, rsp->PersistentFileId, tcon->tid, | |
2603 | ses->Suid, CREATE_NOT_FILE, | |
2604 | FILE_WRITE_ATTRIBUTES); | |
bea851b8 SF |
2605 | |
2606 | SMB2_close(xid, tcon, rsp->PersistentFileId, rsp->VolatileFileId); | |
2607 | ||
2608 | /* Eventually save off posix specific response info and timestaps */ | |
2609 | ||
256b4c3f | 2610 | err_free_rsp_buf: |
bea851b8 | 2611 | free_rsp_buf(resp_buftype, rsp); |
256b4c3f AA |
2612 | kfree(pc_buf); |
2613 | err_free_req: | |
2614 | cifs_small_buf_release(req); | |
2615 | err_free_path: | |
2616 | kfree(utf16_path); | |
bea851b8 | 2617 | return rc; |
bea851b8 | 2618 | } |
bea851b8 | 2619 | |
2503a0db | 2620 | int |
352d96f3 AA |
2621 | SMB2_open_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server, |
2622 | struct smb_rqst *rqst, __u8 *oplock, | |
1eb9fb52 | 2623 | struct cifs_open_parms *oparms, __le16 *path) |
2503a0db PS |
2624 | { |
2625 | struct smb2_create_req *req; | |
da502f7d | 2626 | unsigned int n_iov = 2; |
ca81983f | 2627 | __u32 file_attributes = 0; |
1eb9fb52 RS |
2628 | int copy_size; |
2629 | int uni_path_len; | |
4f33bc35 | 2630 | unsigned int total_len; |
1eb9fb52 RS |
2631 | struct kvec *iov = rqst->rq_iov; |
2632 | __le16 *copy_path; | |
2633 | int rc; | |
2503a0db | 2634 | |
352d96f3 AA |
2635 | rc = smb2_plain_req_init(SMB2_CREATE, tcon, server, |
2636 | (void **) &req, &total_len); | |
2503a0db PS |
2637 | if (rc) |
2638 | return rc; | |
2639 | ||
1eb9fb52 RS |
2640 | iov[0].iov_base = (char *)req; |
2641 | /* -1 since last byte is buf[0] which is sent below (path) */ | |
2642 | iov[0].iov_len = total_len - 1; | |
7fb8986e | 2643 | |
064f6047 | 2644 | if (oparms->create_options & CREATE_OPTION_READONLY) |
ca81983f | 2645 | file_attributes |= ATTR_READONLY; |
db8b631d SF |
2646 | if (oparms->create_options & CREATE_OPTION_SPECIAL) |
2647 | file_attributes |= ATTR_SYSTEM; | |
ca81983f | 2648 | |
2503a0db | 2649 | req->ImpersonationLevel = IL_IMPERSONATION; |
064f6047 | 2650 | req->DesiredAccess = cpu_to_le32(oparms->desired_access); |
2503a0db PS |
2651 | /* File attributes ignored on open (used in create though) */ |
2652 | req->FileAttributes = cpu_to_le32(file_attributes); | |
2653 | req->ShareAccess = FILE_SHARE_ALL_LE; | |
c3ca78e2 | 2654 | |
064f6047 PS |
2655 | req->CreateDisposition = cpu_to_le32(oparms->disposition); |
2656 | req->CreateOptions = cpu_to_le32(oparms->create_options & CREATE_OPTIONS_MASK); | |
4f33bc35 | 2657 | req->NameOffset = cpu_to_le16(sizeof(struct smb2_create_req)); |
f0712928 AA |
2658 | |
2659 | /* [MS-SMB2] 2.2.13 NameOffset: | |
2660 | * If SMB2_FLAGS_DFS_OPERATIONS is set in the Flags field of | |
2661 | * the SMB2 header, the file name includes a prefix that will | |
2662 | * be processed during DFS name normalization as specified in | |
2663 | * section 3.3.5.9. Otherwise, the file name is relative to | |
2664 | * the share that is identified by the TreeId in the SMB2 | |
2665 | * header. | |
2666 | */ | |
2667 | if (tcon->share_flags & SHI1005_FLAGS_DFS) { | |
2668 | int name_len; | |
2669 | ||
4f33bc35 | 2670 | req->sync_hdr.Flags |= SMB2_FLAGS_DFS_OPERATIONS; |
f0712928 AA |
2671 | rc = alloc_path_with_tree_prefix(©_path, ©_size, |
2672 | &name_len, | |
2673 | tcon->treeName, path); | |
1eb9fb52 | 2674 | if (rc) |
f0712928 AA |
2675 | return rc; |
2676 | req->NameLength = cpu_to_le16(name_len * 2); | |
59aa3718 PS |
2677 | uni_path_len = copy_size; |
2678 | path = copy_path; | |
f0712928 AA |
2679 | } else { |
2680 | uni_path_len = (2 * UniStrnlen((wchar_t *)path, PATH_MAX)) + 2; | |
2681 | /* MUST set path len (NameLength) to 0 opening root of share */ | |
2682 | req->NameLength = cpu_to_le16(uni_path_len - 2); | |
1eb9fb52 RS |
2683 | copy_size = uni_path_len; |
2684 | if (copy_size % 8 != 0) | |
2685 | copy_size = roundup(copy_size, 8); | |
2686 | copy_path = kzalloc(copy_size, GFP_KERNEL); | |
2687 | if (!copy_path) | |
2688 | return -ENOMEM; | |
2689 | memcpy((char *)copy_path, (const char *)path, | |
2690 | uni_path_len); | |
2691 | uni_path_len = copy_size; | |
2692 | path = copy_path; | |
2503a0db PS |
2693 | } |
2694 | ||
59aa3718 PS |
2695 | iov[1].iov_len = uni_path_len; |
2696 | iov[1].iov_base = path; | |
59aa3718 | 2697 | |
3e7a02d4 | 2698 | if ((!server->oplocks) || (tcon->no_lease)) |
b8c32dbb PS |
2699 | *oplock = SMB2_OPLOCK_LEVEL_NONE; |
2700 | ||
a41a28bd | 2701 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LEASING) || |
b8c32dbb PS |
2702 | *oplock == SMB2_OPLOCK_LEVEL_NONE) |
2703 | req->RequestedOplockLevel = *oplock; | |
f8015683 SF |
2704 | else if (!(server->capabilities & SMB2_GLOBAL_CAP_DIRECTORY_LEASING) && |
2705 | (oparms->create_options & CREATE_NOT_FILE)) | |
2706 | req->RequestedOplockLevel = *oplock; /* no srv lease support */ | |
b8c32dbb | 2707 | else { |
729c0c9d SB |
2708 | rc = add_lease_context(server, iov, &n_iov, |
2709 | oparms->fid->lease_key, oplock); | |
1eb9fb52 | 2710 | if (rc) |
d22cbfec | 2711 | return rc; |
b8c32dbb PS |
2712 | } |
2713 | ||
63eb3def PS |
2714 | if (*oplock == SMB2_OPLOCK_LEVEL_BATCH) { |
2715 | /* need to set Next field of lease context if we request it */ | |
a41a28bd | 2716 | if (server->capabilities & SMB2_GLOBAL_CAP_LEASING) { |
63eb3def | 2717 | struct create_context *ccontext = |
da502f7d | 2718 | (struct create_context *)iov[n_iov-1].iov_base; |
1c46943f | 2719 | ccontext->Next = |
a41a28bd | 2720 | cpu_to_le32(server->vals->create_lease_size); |
63eb3def | 2721 | } |
b56eae4d | 2722 | |
da502f7d | 2723 | rc = add_durable_context(iov, &n_iov, oparms, |
b56eae4d | 2724 | tcon->use_persistent); |
1eb9fb52 | 2725 | if (rc) |
63eb3def | 2726 | return rc; |
63eb3def PS |
2727 | } |
2728 | ||
ce558b0e SF |
2729 | if (tcon->posix_extensions) { |
2730 | if (n_iov > 2) { | |
2731 | struct create_context *ccontext = | |
2732 | (struct create_context *)iov[n_iov-1].iov_base; | |
2733 | ccontext->Next = | |
2734 | cpu_to_le32(iov[n_iov-1].iov_len); | |
2735 | } | |
2736 | ||
2737 | rc = add_posix_context(iov, &n_iov, oparms->mode); | |
1eb9fb52 | 2738 | if (rc) |
ce558b0e | 2739 | return rc; |
ce558b0e | 2740 | } |
ce558b0e | 2741 | |
cdeaf9d0 SF |
2742 | if (tcon->snapshot_time) { |
2743 | cifs_dbg(FYI, "adding snapshot context\n"); | |
2744 | if (n_iov > 2) { | |
2745 | struct create_context *ccontext = | |
2746 | (struct create_context *)iov[n_iov-1].iov_base; | |
2747 | ccontext->Next = | |
2748 | cpu_to_le32(iov[n_iov-1].iov_len); | |
2749 | } | |
2750 | ||
2751 | rc = add_twarp_context(iov, &n_iov, tcon->snapshot_time); | |
2752 | if (rc) | |
2753 | return rc; | |
2754 | } | |
2755 | ||
975221ec SF |
2756 | if ((oparms->disposition != FILE_OPEN) && (oparms->cifs_sb)) { |
2757 | bool set_mode; | |
2758 | bool set_owner; | |
2759 | ||
2760 | if ((oparms->cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MODE_FROM_SID) && | |
2761 | (oparms->mode != ACL_NO_MODE)) | |
2762 | set_mode = true; | |
2763 | else { | |
2764 | set_mode = false; | |
2765 | oparms->mode = ACL_NO_MODE; | |
c3ca78e2 SF |
2766 | } |
2767 | ||
975221ec SF |
2768 | if (oparms->cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UID_FROM_ACL) |
2769 | set_owner = true; | |
2770 | else | |
2771 | set_owner = false; | |
2772 | ||
2773 | if (set_owner | set_mode) { | |
2774 | if (n_iov > 2) { | |
2775 | struct create_context *ccontext = | |
2776 | (struct create_context *)iov[n_iov-1].iov_base; | |
2777 | ccontext->Next = cpu_to_le32(iov[n_iov-1].iov_len); | |
2778 | } | |
2779 | ||
2780 | cifs_dbg(FYI, "add sd with mode 0x%x\n", oparms->mode); | |
2781 | rc = add_sd_context(iov, &n_iov, oparms->mode, set_owner); | |
2782 | if (rc) | |
2783 | return rc; | |
2784 | } | |
c3ca78e2 SF |
2785 | } |
2786 | ||
ff2a09e9 SF |
2787 | if (n_iov > 2) { |
2788 | struct create_context *ccontext = | |
2789 | (struct create_context *)iov[n_iov-1].iov_base; | |
2790 | ccontext->Next = cpu_to_le32(iov[n_iov-1].iov_len); | |
2791 | } | |
2792 | add_query_id_context(iov, &n_iov); | |
cdeaf9d0 | 2793 | |
1eb9fb52 RS |
2794 | rqst->rq_nvec = n_iov; |
2795 | return 0; | |
2796 | } | |
2797 | ||
2798 | /* rq_iov[0] is the request and is released by cifs_small_buf_release(). | |
2799 | * All other vectors are freed by kfree(). | |
2800 | */ | |
2801 | void | |
2802 | SMB2_open_free(struct smb_rqst *rqst) | |
2803 | { | |
2804 | int i; | |
2805 | ||
32a1fb36 RS |
2806 | if (rqst && rqst->rq_iov) { |
2807 | cifs_small_buf_release(rqst->rq_iov[0].iov_base); | |
2808 | for (i = 1; i < rqst->rq_nvec; i++) | |
2809 | if (rqst->rq_iov[i].iov_base != smb2_padding) | |
2810 | kfree(rqst->rq_iov[i].iov_base); | |
2811 | } | |
1eb9fb52 RS |
2812 | } |
2813 | ||
2814 | int | |
2815 | SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path, | |
2816 | __u8 *oplock, struct smb2_file_all_info *buf, | |
69dda305 | 2817 | struct create_posix_rsp *posix, |
1eb9fb52 RS |
2818 | struct kvec *err_iov, int *buftype) |
2819 | { | |
2820 | struct smb_rqst rqst; | |
2821 | struct smb2_create_rsp *rsp = NULL; | |
1eb9fb52 RS |
2822 | struct cifs_tcon *tcon = oparms->tcon; |
2823 | struct cifs_ses *ses = tcon->ses; | |
352d96f3 | 2824 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
4d8dfafc | 2825 | struct kvec iov[SMB2_CREATE_IOV_SIZE]; |
1eb9fb52 | 2826 | struct kvec rsp_iov = {NULL, 0}; |
ef2298a0 | 2827 | int resp_buftype = CIFS_NO_BUFFER; |
1eb9fb52 RS |
2828 | int rc = 0; |
2829 | int flags = 0; | |
2830 | ||
2831 | cifs_dbg(FYI, "create/open\n"); | |
352d96f3 | 2832 | if (!ses || !server) |
1eb9fb52 RS |
2833 | return -EIO; |
2834 | ||
2835 | if (smb3_encryption_required(tcon)) | |
2836 | flags |= CIFS_TRANSFORM_REQ; | |
2837 | ||
40eff45b | 2838 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
1eb9fb52 | 2839 | memset(&iov, 0, sizeof(iov)); |
40eff45b | 2840 | rqst.rq_iov = iov; |
4d8dfafc | 2841 | rqst.rq_nvec = SMB2_CREATE_IOV_SIZE; |
1eb9fb52 | 2842 | |
352d96f3 AA |
2843 | rc = SMB2_open_init(tcon, server, |
2844 | &rqst, oplock, oparms, path); | |
1eb9fb52 RS |
2845 | if (rc) |
2846 | goto creat_exit; | |
40eff45b | 2847 | |
efe2e9f3 SF |
2848 | trace_smb3_open_enter(xid, tcon->tid, tcon->ses->Suid, |
2849 | oparms->create_options, oparms->desired_access); | |
2850 | ||
352d96f3 AA |
2851 | rc = cifs_send_recv(xid, ses, server, |
2852 | &rqst, &resp_buftype, flags, | |
4f33bc35 | 2853 | &rsp_iov); |
da502f7d | 2854 | rsp = (struct smb2_create_rsp *)rsp_iov.iov_base; |
2503a0db PS |
2855 | |
2856 | if (rc != 0) { | |
2857 | cifs_stats_fail_inc(tcon, SMB2_CREATE_HE); | |
91cb74f5 RS |
2858 | if (err_iov && rsp) { |
2859 | *err_iov = rsp_iov; | |
9d874c36 | 2860 | *buftype = resp_buftype; |
91cb74f5 RS |
2861 | resp_buftype = CIFS_NO_BUFFER; |
2862 | rsp = NULL; | |
2863 | } | |
28d59363 SF |
2864 | trace_smb3_open_err(xid, tcon->tid, ses->Suid, |
2865 | oparms->create_options, oparms->desired_access, rc); | |
7dcc82c2 | 2866 | if (rc == -EREMCHG) { |
a0a3036b JP |
2867 | pr_warn_once("server share %s deleted\n", |
2868 | tcon->treeName); | |
7dcc82c2 SF |
2869 | tcon->need_reconnect = true; |
2870 | } | |
2503a0db | 2871 | goto creat_exit; |
28d59363 SF |
2872 | } else |
2873 | trace_smb3_open_done(xid, rsp->PersistentFileId, tcon->tid, | |
2874 | ses->Suid, oparms->create_options, | |
2875 | oparms->desired_access); | |
2503a0db | 2876 | |
fae8044c | 2877 | atomic_inc(&tcon->num_remote_opens); |
064f6047 PS |
2878 | oparms->fid->persistent_fid = rsp->PersistentFileId; |
2879 | oparms->fid->volatile_fid = rsp->VolatileFileId; | |
86f740f2 | 2880 | oparms->fid->access = oparms->desired_access; |
dfe33f9a SF |
2881 | #ifdef CONFIG_CIFS_DEBUG2 |
2882 | oparms->fid->mid = le64_to_cpu(rsp->sync_hdr.MessageId); | |
2883 | #endif /* CIFS_DEBUG2 */ | |
f0df737e PS |
2884 | |
2885 | if (buf) { | |
2886 | memcpy(buf, &rsp->CreationTime, 32); | |
2887 | buf->AllocationSize = rsp->AllocationSize; | |
2888 | buf->EndOfFile = rsp->EndofFile; | |
2889 | buf->Attributes = rsp->FileAttributes; | |
2890 | buf->NumberOfLinks = cpu_to_le32(1); | |
2891 | buf->DeletePending = 0; | |
2892 | } | |
2e44b288 | 2893 | |
89a5bfa3 SF |
2894 | |
2895 | smb2_parse_contexts(server, rsp, &oparms->fid->epoch, | |
69dda305 | 2896 | oparms->fid->lease_key, oplock, buf, posix); |
2503a0db | 2897 | creat_exit: |
1eb9fb52 | 2898 | SMB2_open_free(&rqst); |
2503a0db PS |
2899 | free_rsp_buf(resp_buftype, rsp); |
2900 | return rc; | |
2901 | } | |
2902 | ||
4a72dafa | 2903 | int |
352d96f3 AA |
2904 | SMB2_ioctl_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server, |
2905 | struct smb_rqst *rqst, | |
ccdc77a3 | 2906 | u64 persistent_fid, u64 volatile_fid, u32 opcode, |
153322f7 SF |
2907 | bool is_fsctl, char *in_data, u32 indatalen, |
2908 | __u32 max_response_size) | |
4a72dafa SF |
2909 | { |
2910 | struct smb2_ioctl_req *req; | |
ccdc77a3 | 2911 | struct kvec *iov = rqst->rq_iov; |
97754680 | 2912 | unsigned int total_len; |
ccdc77a3 | 2913 | int rc; |
2c87d6a9 | 2914 | char *in_data_buf; |
4a72dafa | 2915 | |
352d96f3 AA |
2916 | rc = smb2_ioctl_req_init(opcode, tcon, server, |
2917 | (void **) &req, &total_len); | |
4a72dafa SF |
2918 | if (rc) |
2919 | return rc; | |
2920 | ||
2c87d6a9 LL |
2921 | if (indatalen) { |
2922 | /* | |
2923 | * indatalen is usually small at a couple of bytes max, so | |
2924 | * just allocate through generic pool | |
2925 | */ | |
d81f0974 | 2926 | in_data_buf = kmemdup(in_data, indatalen, GFP_NOFS); |
2c87d6a9 LL |
2927 | if (!in_data_buf) { |
2928 | cifs_small_buf_release(req); | |
2929 | return -ENOMEM; | |
2930 | } | |
2c87d6a9 LL |
2931 | } |
2932 | ||
4a72dafa SF |
2933 | req->CtlCode = cpu_to_le32(opcode); |
2934 | req->PersistentFileId = persistent_fid; | |
2935 | req->VolatileFileId = volatile_fid; | |
2936 | ||
ccdc77a3 RS |
2937 | iov[0].iov_base = (char *)req; |
2938 | /* | |
2939 | * If no input data, the size of ioctl struct in | |
2940 | * protocol spec still includes a 1 byte data buffer, | |
2941 | * but if input data passed to ioctl, we do not | |
2942 | * want to double count this, so we do not send | |
2943 | * the dummy one byte of data in iovec[0] if sending | |
2944 | * input data (in iovec[1]). | |
2945 | */ | |
4a72dafa SF |
2946 | if (indatalen) { |
2947 | req->InputCount = cpu_to_le32(indatalen); | |
2948 | /* do not set InputOffset if no input data */ | |
2949 | req->InputOffset = | |
97754680 | 2950 | cpu_to_le32(offsetof(struct smb2_ioctl_req, Buffer)); |
ccdc77a3 RS |
2951 | rqst->rq_nvec = 2; |
2952 | iov[0].iov_len = total_len - 1; | |
2c87d6a9 | 2953 | iov[1].iov_base = in_data_buf; |
4a72dafa | 2954 | iov[1].iov_len = indatalen; |
ccdc77a3 RS |
2955 | } else { |
2956 | rqst->rq_nvec = 1; | |
2957 | iov[0].iov_len = total_len; | |
2958 | } | |
4a72dafa SF |
2959 | |
2960 | req->OutputOffset = 0; | |
2961 | req->OutputCount = 0; /* MBZ */ | |
2962 | ||
2963 | /* | |
153322f7 SF |
2964 | * In most cases max_response_size is set to 16K (CIFSMaxBufSize) |
2965 | * We Could increase default MaxOutputResponse, but that could require | |
2966 | * more credits. Windows typically sets this smaller, but for some | |
4a72dafa SF |
2967 | * ioctls it may be useful to allow server to send more. No point |
2968 | * limiting what the server can send as long as fits in one credit | |
153322f7 SF |
2969 | * We can not handle more than CIFS_MAX_BUF_SIZE yet but may want |
2970 | * to increase this limit up in the future. | |
2971 | * Note that for snapshot queries that servers like Azure expect that | |
2972 | * the first query be minimal size (and just used to get the number/size | |
2973 | * of previous versions) so response size must be specified as EXACTLY | |
2974 | * sizeof(struct snapshot_array) which is 16 when rounded up to multiple | |
2975 | * of eight bytes. Currently that is the only case where we set max | |
2976 | * response size smaller. | |
4a72dafa | 2977 | */ |
153322f7 | 2978 | req->MaxOutputResponse = cpu_to_le32(max_response_size); |
ebf57440 NJ |
2979 | req->sync_hdr.CreditCharge = |
2980 | cpu_to_le16(DIV_ROUND_UP(max(indatalen, max_response_size), | |
2981 | SMB2_MAX_BUFFER_SIZE)); | |
4a72dafa SF |
2982 | if (is_fsctl) |
2983 | req->Flags = cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL); | |
2984 | else | |
2985 | req->Flags = 0; | |
2986 | ||
4587eee0 SF |
2987 | /* validate negotiate request must be signed - see MS-SMB2 3.2.5.5 */ |
2988 | if (opcode == FSCTL_VALIDATE_NEGOTIATE_INFO) | |
97754680 | 2989 | req->sync_hdr.Flags |= SMB2_FLAGS_SIGNED; |
4a72dafa | 2990 | |
ccdc77a3 RS |
2991 | return 0; |
2992 | } | |
2993 | ||
2994 | void | |
2995 | SMB2_ioctl_free(struct smb_rqst *rqst) | |
2996 | { | |
6457c20e | 2997 | int i; |
2c87d6a9 | 2998 | if (rqst && rqst->rq_iov) { |
ccdc77a3 | 2999 | cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */ |
6457c20e MZ |
3000 | for (i = 1; i < rqst->rq_nvec; i++) |
3001 | if (rqst->rq_iov[i].iov_base != smb2_padding) | |
3002 | kfree(rqst->rq_iov[i].iov_base); | |
2c87d6a9 | 3003 | } |
ccdc77a3 RS |
3004 | } |
3005 | ||
153322f7 | 3006 | |
ccdc77a3 RS |
3007 | /* |
3008 | * SMB2 IOCTL is used for both IOCTLs and FSCTLs | |
3009 | */ | |
3010 | int | |
3011 | SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, | |
3012 | u64 volatile_fid, u32 opcode, bool is_fsctl, | |
153322f7 | 3013 | char *in_data, u32 indatalen, u32 max_out_data_len, |
ccdc77a3 RS |
3014 | char **out_data, u32 *plen /* returned data len */) |
3015 | { | |
3016 | struct smb_rqst rqst; | |
3017 | struct smb2_ioctl_rsp *rsp = NULL; | |
3018 | struct cifs_ses *ses; | |
352d96f3 | 3019 | struct TCP_Server_Info *server; |
72c419d9 | 3020 | struct kvec iov[SMB2_IOCTL_IOV_SIZE]; |
ccdc77a3 RS |
3021 | struct kvec rsp_iov = {NULL, 0}; |
3022 | int resp_buftype = CIFS_NO_BUFFER; | |
3023 | int rc = 0; | |
3024 | int flags = 0; | |
3025 | ||
3026 | cifs_dbg(FYI, "SMB2 IOCTL\n"); | |
3027 | ||
3028 | if (out_data != NULL) | |
3029 | *out_data = NULL; | |
3030 | ||
3031 | /* zero out returned data len, in case of error */ | |
3032 | if (plen) | |
3033 | *plen = 0; | |
3034 | ||
352d96f3 | 3035 | if (!tcon) |
ccdc77a3 RS |
3036 | return -EIO; |
3037 | ||
352d96f3 | 3038 | ses = tcon->ses; |
ac6ad7a8 CIK |
3039 | if (!ses) |
3040 | return -EIO; | |
352d96f3 AA |
3041 | |
3042 | server = cifs_pick_channel(ses); | |
ac6ad7a8 | 3043 | if (!server) |
ccdc77a3 RS |
3044 | return -EIO; |
3045 | ||
3046 | if (smb3_encryption_required(tcon)) | |
3047 | flags |= CIFS_TRANSFORM_REQ; | |
3048 | ||
40eff45b | 3049 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
ccdc77a3 | 3050 | memset(&iov, 0, sizeof(iov)); |
40eff45b | 3051 | rqst.rq_iov = iov; |
72c419d9 | 3052 | rqst.rq_nvec = SMB2_IOCTL_IOV_SIZE; |
ccdc77a3 | 3053 | |
352d96f3 AA |
3054 | rc = SMB2_ioctl_init(tcon, server, |
3055 | &rqst, persistent_fid, volatile_fid, opcode, | |
153322f7 | 3056 | is_fsctl, in_data, indatalen, max_out_data_len); |
ccdc77a3 RS |
3057 | if (rc) |
3058 | goto ioctl_exit; | |
40eff45b | 3059 | |
352d96f3 AA |
3060 | rc = cifs_send_recv(xid, ses, server, |
3061 | &rqst, &resp_buftype, flags, | |
97754680 | 3062 | &rsp_iov); |
da502f7d | 3063 | rsp = (struct smb2_ioctl_rsp *)rsp_iov.iov_base; |
4a72dafa | 3064 | |
eccb4422 SF |
3065 | if (rc != 0) |
3066 | trace_smb3_fsctl_err(xid, persistent_fid, tcon->tid, | |
3067 | ses->Suid, 0, opcode, rc); | |
3068 | ||
2f3ebaba | 3069 | if ((rc != 0) && (rc != -EINVAL) && (rc != -E2BIG)) { |
8e353106 | 3070 | cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE); |
4a72dafa | 3071 | goto ioctl_exit; |
9bf0c9cd SF |
3072 | } else if (rc == -EINVAL) { |
3073 | if ((opcode != FSCTL_SRV_COPYCHUNK_WRITE) && | |
3074 | (opcode != FSCTL_SRV_COPYCHUNK)) { | |
8e353106 | 3075 | cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE); |
9bf0c9cd SF |
3076 | goto ioctl_exit; |
3077 | } | |
2f3ebaba RS |
3078 | } else if (rc == -E2BIG) { |
3079 | if (opcode != FSCTL_QUERY_ALLOCATED_RANGES) { | |
3080 | cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE); | |
3081 | goto ioctl_exit; | |
3082 | } | |
4a72dafa SF |
3083 | } |
3084 | ||
3085 | /* check if caller wants to look at return data or just return rc */ | |
3086 | if ((plen == NULL) || (out_data == NULL)) | |
3087 | goto ioctl_exit; | |
3088 | ||
3089 | *plen = le32_to_cpu(rsp->OutputCount); | |
3090 | ||
3091 | /* We check for obvious errors in the output buffer length and offset */ | |
3092 | if (*plen == 0) | |
3093 | goto ioctl_exit; /* server returned no data */ | |
2d204ee9 | 3094 | else if (*plen > rsp_iov.iov_len || *plen > 0xFF00) { |
3175eb9b | 3095 | cifs_tcon_dbg(VFS, "srv returned invalid ioctl length: %d\n", *plen); |
4a72dafa SF |
3096 | *plen = 0; |
3097 | rc = -EIO; | |
3098 | goto ioctl_exit; | |
3099 | } | |
3100 | ||
2d204ee9 | 3101 | if (rsp_iov.iov_len - *plen < le32_to_cpu(rsp->OutputOffset)) { |
3175eb9b | 3102 | cifs_tcon_dbg(VFS, "Malformed ioctl resp: len %d offset %d\n", *plen, |
4a72dafa SF |
3103 | le32_to_cpu(rsp->OutputOffset)); |
3104 | *plen = 0; | |
3105 | rc = -EIO; | |
3106 | goto ioctl_exit; | |
3107 | } | |
3108 | ||
d034feeb Y |
3109 | *out_data = kmemdup((char *)rsp + le32_to_cpu(rsp->OutputOffset), |
3110 | *plen, GFP_KERNEL); | |
4a72dafa SF |
3111 | if (*out_data == NULL) { |
3112 | rc = -ENOMEM; | |
3113 | goto ioctl_exit; | |
3114 | } | |
3115 | ||
4a72dafa | 3116 | ioctl_exit: |
ccdc77a3 | 3117 | SMB2_ioctl_free(&rqst); |
4a72dafa SF |
3118 | free_rsp_buf(resp_buftype, rsp); |
3119 | return rc; | |
3120 | } | |
3121 | ||
64a5cfa6 SF |
3122 | /* |
3123 | * Individual callers to ioctl worker function follow | |
3124 | */ | |
3125 | ||
3126 | int | |
3127 | SMB2_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
3128 | u64 persistent_fid, u64 volatile_fid) | |
3129 | { | |
3130 | int rc; | |
64a5cfa6 SF |
3131 | struct compress_ioctl fsctl_input; |
3132 | char *ret_data = NULL; | |
3133 | ||
3134 | fsctl_input.CompressionState = | |
bc09d141 | 3135 | cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); |
64a5cfa6 SF |
3136 | |
3137 | rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid, | |
3138 | FSCTL_SET_COMPRESSION, true /* is_fsctl */, | |
3139 | (char *)&fsctl_input /* data input */, | |
153322f7 SF |
3140 | 2 /* in data len */, CIFSMaxBufSize /* max out data */, |
3141 | &ret_data /* out data */, NULL); | |
64a5cfa6 SF |
3142 | |
3143 | cifs_dbg(FYI, "set compression rc %d\n", rc); | |
64a5cfa6 SF |
3144 | |
3145 | return rc; | |
3146 | } | |
3147 | ||
8eb4ecfa | 3148 | int |
352d96f3 AA |
3149 | SMB2_close_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server, |
3150 | struct smb_rqst *rqst, | |
43f8a6a7 | 3151 | u64 persistent_fid, u64 volatile_fid, bool query_attrs) |
8eb4ecfa RS |
3152 | { |
3153 | struct smb2_close_req *req; | |
3154 | struct kvec *iov = rqst->rq_iov; | |
3155 | unsigned int total_len; | |
3156 | int rc; | |
3157 | ||
352d96f3 AA |
3158 | rc = smb2_plain_req_init(SMB2_CLOSE, tcon, server, |
3159 | (void **) &req, &total_len); | |
8eb4ecfa RS |
3160 | if (rc) |
3161 | return rc; | |
3162 | ||
3163 | req->PersistentFileId = persistent_fid; | |
3164 | req->VolatileFileId = volatile_fid; | |
43f8a6a7 SF |
3165 | if (query_attrs) |
3166 | req->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB; | |
3167 | else | |
3168 | req->Flags = 0; | |
8eb4ecfa RS |
3169 | iov[0].iov_base = (char *)req; |
3170 | iov[0].iov_len = total_len; | |
3171 | ||
3172 | return 0; | |
3173 | } | |
3174 | ||
3175 | void | |
3176 | SMB2_close_free(struct smb_rqst *rqst) | |
3177 | { | |
32a1fb36 RS |
3178 | if (rqst && rqst->rq_iov) |
3179 | cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */ | |
8eb4ecfa RS |
3180 | } |
3181 | ||
2503a0db | 3182 | int |
43f8a6a7 SF |
3183 | __SMB2_close(const unsigned int xid, struct cifs_tcon *tcon, |
3184 | u64 persistent_fid, u64 volatile_fid, | |
3185 | struct smb2_file_network_open_info *pbuf) | |
2503a0db | 3186 | { |
40eff45b | 3187 | struct smb_rqst rqst; |
8eb4ecfa | 3188 | struct smb2_close_rsp *rsp = NULL; |
2503a0db | 3189 | struct cifs_ses *ses = tcon->ses; |
352d96f3 | 3190 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
2503a0db | 3191 | struct kvec iov[1]; |
da502f7d | 3192 | struct kvec rsp_iov; |
ef2298a0 | 3193 | int resp_buftype = CIFS_NO_BUFFER; |
2503a0db | 3194 | int rc = 0; |
9e8fae25 | 3195 | int flags = 0; |
43f8a6a7 | 3196 | bool query_attrs = false; |
2503a0db | 3197 | |
f96637be | 3198 | cifs_dbg(FYI, "Close\n"); |
2503a0db | 3199 | |
352d96f3 | 3200 | if (!ses || !server) |
2503a0db PS |
3201 | return -EIO; |
3202 | ||
5a77e75f | 3203 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
3204 | flags |= CIFS_TRANSFORM_REQ; |
3205 | ||
40eff45b | 3206 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
8eb4ecfa | 3207 | memset(&iov, 0, sizeof(iov)); |
40eff45b RS |
3208 | rqst.rq_iov = iov; |
3209 | rqst.rq_nvec = 1; | |
3210 | ||
43f8a6a7 SF |
3211 | /* check if need to ask server to return timestamps in close response */ |
3212 | if (pbuf) | |
3213 | query_attrs = true; | |
3214 | ||
f90f9797 | 3215 | trace_smb3_close_enter(xid, persistent_fid, tcon->tid, ses->Suid); |
352d96f3 AA |
3216 | rc = SMB2_close_init(tcon, server, |
3217 | &rqst, persistent_fid, volatile_fid, | |
43f8a6a7 | 3218 | query_attrs); |
8eb4ecfa RS |
3219 | if (rc) |
3220 | goto close_exit; | |
3221 | ||
352d96f3 AA |
3222 | rc = cifs_send_recv(xid, ses, server, |
3223 | &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d | 3224 | rsp = (struct smb2_close_rsp *)rsp_iov.iov_base; |
2503a0db PS |
3225 | |
3226 | if (rc != 0) { | |
d4a029d2 | 3227 | cifs_stats_fail_inc(tcon, SMB2_CLOSE_HE); |
eccb4422 SF |
3228 | trace_smb3_close_err(xid, persistent_fid, tcon->tid, ses->Suid, |
3229 | rc); | |
2503a0db | 3230 | goto close_exit; |
43f8a6a7 | 3231 | } else { |
f90f9797 SF |
3232 | trace_smb3_close_done(xid, persistent_fid, tcon->tid, |
3233 | ses->Suid); | |
43f8a6a7 SF |
3234 | /* |
3235 | * Note that have to subtract 4 since struct network_open_info | |
3236 | * has a final 4 byte pad that close response does not have | |
3237 | */ | |
3238 | if (pbuf) | |
3239 | memcpy(pbuf, (char *)&rsp->CreationTime, sizeof(*pbuf) - 4); | |
3240 | } | |
2503a0db | 3241 | |
fae8044c | 3242 | atomic_dec(&tcon->num_remote_opens); |
2503a0db | 3243 | close_exit: |
8eb4ecfa | 3244 | SMB2_close_free(&rqst); |
2503a0db | 3245 | free_rsp_buf(resp_buftype, rsp); |
9150c3ad PS |
3246 | |
3247 | /* retry close in a worker thread if this one is interrupted */ | |
3248 | if (rc == -EINTR) { | |
9e8fae25 SF |
3249 | int tmp_rc; |
3250 | ||
9150c3ad PS |
3251 | tmp_rc = smb2_handle_cancelled_close(tcon, persistent_fid, |
3252 | volatile_fid); | |
3253 | if (tmp_rc) | |
3254 | cifs_dbg(VFS, "handle cancelled close fid 0x%llx returned error %d\n", | |
3255 | persistent_fid, tmp_rc); | |
3256 | } | |
9150c3ad | 3257 | return rc; |
97ca1762 RS |
3258 | } |
3259 | ||
43f8a6a7 SF |
3260 | int |
3261 | SMB2_close(const unsigned int xid, struct cifs_tcon *tcon, | |
3262 | u64 persistent_fid, u64 volatile_fid) | |
3263 | { | |
3264 | return __SMB2_close(xid, tcon, persistent_fid, volatile_fid, NULL); | |
3265 | } | |
3266 | ||
730928c8 RS |
3267 | int |
3268 | smb2_validate_iov(unsigned int offset, unsigned int buffer_length, | |
3269 | struct kvec *iov, unsigned int min_buf_size) | |
be4cb9e3 | 3270 | { |
c1596ff5 | 3271 | unsigned int smb_len = iov->iov_len; |
1fc6ad2f RS |
3272 | char *end_of_smb = smb_len + (char *)iov->iov_base; |
3273 | char *begin_of_buf = offset + (char *)iov->iov_base; | |
be4cb9e3 PS |
3274 | char *end_of_buf = begin_of_buf + buffer_length; |
3275 | ||
3276 | ||
3277 | if (buffer_length < min_buf_size) { | |
f96637be JP |
3278 | cifs_dbg(VFS, "buffer length %d smaller than minimum size %d\n", |
3279 | buffer_length, min_buf_size); | |
be4cb9e3 PS |
3280 | return -EINVAL; |
3281 | } | |
3282 | ||
3283 | /* check if beyond RFC1001 maximum length */ | |
3284 | if ((smb_len > 0x7FFFFF) || (buffer_length > 0x7FFFFF)) { | |
f96637be JP |
3285 | cifs_dbg(VFS, "buffer length %d or smb length %d too large\n", |
3286 | buffer_length, smb_len); | |
be4cb9e3 PS |
3287 | return -EINVAL; |
3288 | } | |
3289 | ||
3290 | if ((begin_of_buf > end_of_smb) || (end_of_buf > end_of_smb)) { | |
a0a3036b | 3291 | cifs_dbg(VFS, "Invalid server response, bad offset to data\n"); |
be4cb9e3 PS |
3292 | return -EINVAL; |
3293 | } | |
3294 | ||
3295 | return 0; | |
3296 | } | |
3297 | ||
3298 | /* | |
3299 | * If SMB buffer fields are valid, copy into temporary buffer to hold result. | |
3300 | * Caller must free buffer. | |
3301 | */ | |
c5a5f38f RS |
3302 | int |
3303 | smb2_validate_and_copy_iov(unsigned int offset, unsigned int buffer_length, | |
3304 | struct kvec *iov, unsigned int minbufsize, | |
3305 | char *data) | |
be4cb9e3 | 3306 | { |
1fc6ad2f | 3307 | char *begin_of_buf = offset + (char *)iov->iov_base; |
be4cb9e3 PS |
3308 | int rc; |
3309 | ||
3310 | if (!data) | |
3311 | return -EINVAL; | |
3312 | ||
730928c8 | 3313 | rc = smb2_validate_iov(offset, buffer_length, iov, minbufsize); |
be4cb9e3 PS |
3314 | if (rc) |
3315 | return rc; | |
3316 | ||
3317 | memcpy(data, begin_of_buf, buffer_length); | |
3318 | ||
3319 | return 0; | |
3320 | } | |
3321 | ||
296ecbae | 3322 | int |
352d96f3 AA |
3323 | SMB2_query_info_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server, |
3324 | struct smb_rqst *rqst, | |
296ecbae RS |
3325 | u64 persistent_fid, u64 volatile_fid, |
3326 | u8 info_class, u8 info_type, u32 additional_info, | |
f5b05d62 | 3327 | size_t output_len, size_t input_len, void *input) |
be4cb9e3 PS |
3328 | { |
3329 | struct smb2_query_info_req *req; | |
296ecbae | 3330 | struct kvec *iov = rqst->rq_iov; |
b2fb7fec | 3331 | unsigned int total_len; |
296ecbae | 3332 | int rc; |
be4cb9e3 | 3333 | |
352d96f3 AA |
3334 | rc = smb2_plain_req_init(SMB2_QUERY_INFO, tcon, server, |
3335 | (void **) &req, &total_len); | |
be4cb9e3 PS |
3336 | if (rc) |
3337 | return rc; | |
3338 | ||
42c493c1 | 3339 | req->InfoType = info_type; |
f0df737e | 3340 | req->FileInfoClass = info_class; |
be4cb9e3 PS |
3341 | req->PersistentFileId = persistent_fid; |
3342 | req->VolatileFileId = volatile_fid; | |
42c493c1 | 3343 | req->AdditionalInformation = cpu_to_le32(additional_info); |
48923d2a | 3344 | |
f0df737e | 3345 | req->OutputBufferLength = cpu_to_le32(output_len); |
f5b05d62 RS |
3346 | if (input_len) { |
3347 | req->InputBufferLength = cpu_to_le32(input_len); | |
3348 | /* total_len for smb query request never close to le16 max */ | |
3349 | req->InputBufferOffset = cpu_to_le16(total_len - 1); | |
3350 | memcpy(req->Buffer, input, input_len); | |
3351 | } | |
be4cb9e3 PS |
3352 | |
3353 | iov[0].iov_base = (char *)req; | |
b2fb7fec | 3354 | /* 1 for Buffer */ |
f5b05d62 | 3355 | iov[0].iov_len = total_len - 1 + input_len; |
296ecbae RS |
3356 | return 0; |
3357 | } | |
3358 | ||
3359 | void | |
3360 | SMB2_query_info_free(struct smb_rqst *rqst) | |
3361 | { | |
32a1fb36 RS |
3362 | if (rqst && rqst->rq_iov) |
3363 | cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */ | |
296ecbae RS |
3364 | } |
3365 | ||
3366 | static int | |
3367 | query_info(const unsigned int xid, struct cifs_tcon *tcon, | |
3368 | u64 persistent_fid, u64 volatile_fid, u8 info_class, u8 info_type, | |
3369 | u32 additional_info, size_t output_len, size_t min_len, void **data, | |
3370 | u32 *dlen) | |
3371 | { | |
3372 | struct smb_rqst rqst; | |
3373 | struct smb2_query_info_rsp *rsp = NULL; | |
3374 | struct kvec iov[1]; | |
3375 | struct kvec rsp_iov; | |
3376 | int rc = 0; | |
ef2298a0 | 3377 | int resp_buftype = CIFS_NO_BUFFER; |
296ecbae | 3378 | struct cifs_ses *ses = tcon->ses; |
ac6ad7a8 | 3379 | struct TCP_Server_Info *server; |
296ecbae | 3380 | int flags = 0; |
73aaf920 | 3381 | bool allocated = false; |
296ecbae RS |
3382 | |
3383 | cifs_dbg(FYI, "Query Info\n"); | |
3384 | ||
ac6ad7a8 CIK |
3385 | if (!ses) |
3386 | return -EIO; | |
352d96f3 | 3387 | server = cifs_pick_channel(ses); |
ac6ad7a8 | 3388 | if (!server) |
296ecbae RS |
3389 | return -EIO; |
3390 | ||
3391 | if (smb3_encryption_required(tcon)) | |
3392 | flags |= CIFS_TRANSFORM_REQ; | |
be4cb9e3 | 3393 | |
40eff45b | 3394 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
296ecbae | 3395 | memset(&iov, 0, sizeof(iov)); |
40eff45b RS |
3396 | rqst.rq_iov = iov; |
3397 | rqst.rq_nvec = 1; | |
3398 | ||
352d96f3 AA |
3399 | rc = SMB2_query_info_init(tcon, server, |
3400 | &rqst, persistent_fid, volatile_fid, | |
296ecbae | 3401 | info_class, info_type, additional_info, |
f5b05d62 | 3402 | output_len, 0, NULL); |
296ecbae RS |
3403 | if (rc) |
3404 | goto qinf_exit; | |
3405 | ||
d42043a6 SF |
3406 | trace_smb3_query_info_enter(xid, persistent_fid, tcon->tid, |
3407 | ses->Suid, info_class, (__u32)info_type); | |
3408 | ||
352d96f3 AA |
3409 | rc = cifs_send_recv(xid, ses, server, |
3410 | &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d | 3411 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; |
e5d04887 | 3412 | |
be4cb9e3 PS |
3413 | if (rc) { |
3414 | cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); | |
eccb4422 SF |
3415 | trace_smb3_query_info_err(xid, persistent_fid, tcon->tid, |
3416 | ses->Suid, info_class, (__u32)info_type, rc); | |
be4cb9e3 PS |
3417 | goto qinf_exit; |
3418 | } | |
3419 | ||
d42043a6 SF |
3420 | trace_smb3_query_info_done(xid, persistent_fid, tcon->tid, |
3421 | ses->Suid, info_class, (__u32)info_type); | |
3422 | ||
42c493c1 SP |
3423 | if (dlen) { |
3424 | *dlen = le32_to_cpu(rsp->OutputBufferLength); | |
3425 | if (!*data) { | |
3426 | *data = kmalloc(*dlen, GFP_KERNEL); | |
3427 | if (!*data) { | |
3175eb9b | 3428 | cifs_tcon_dbg(VFS, |
42c493c1 SP |
3429 | "Error %d allocating memory for acl\n", |
3430 | rc); | |
3431 | *dlen = 0; | |
73aaf920 | 3432 | rc = -ENOMEM; |
42c493c1 SP |
3433 | goto qinf_exit; |
3434 | } | |
73aaf920 | 3435 | allocated = true; |
42c493c1 SP |
3436 | } |
3437 | } | |
3438 | ||
c5a5f38f RS |
3439 | rc = smb2_validate_and_copy_iov(le16_to_cpu(rsp->OutputBufferOffset), |
3440 | le32_to_cpu(rsp->OutputBufferLength), | |
3441 | &rsp_iov, min_len, *data); | |
73aaf920 CIK |
3442 | if (rc && allocated) { |
3443 | kfree(*data); | |
3444 | *data = NULL; | |
3445 | *dlen = 0; | |
3446 | } | |
be4cb9e3 PS |
3447 | |
3448 | qinf_exit: | |
296ecbae | 3449 | SMB2_query_info_free(&rqst); |
be4cb9e3 PS |
3450 | free_rsp_buf(resp_buftype, rsp); |
3451 | return rc; | |
3452 | } | |
9094fad1 | 3453 | |
42c493c1 SP |
3454 | int SMB2_query_info(const unsigned int xid, struct cifs_tcon *tcon, |
3455 | u64 persistent_fid, u64 volatile_fid, struct smb2_file_all_info *data) | |
3456 | { | |
3457 | return query_info(xid, tcon, persistent_fid, volatile_fid, | |
3458 | FILE_ALL_INFORMATION, SMB2_O_INFO_FILE, 0, | |
3459 | sizeof(struct smb2_file_all_info) + PATH_MAX * 2, | |
3460 | sizeof(struct smb2_file_all_info), (void **)&data, | |
3461 | NULL); | |
3462 | } | |
3463 | ||
b1bc1874 SF |
3464 | int |
3465 | SMB311_posix_query_info(const unsigned int xid, struct cifs_tcon *tcon, | |
3466 | u64 persistent_fid, u64 volatile_fid, struct smb311_posix_qinfo *data, u32 *plen) | |
3467 | { | |
3468 | size_t output_len = sizeof(struct smb311_posix_qinfo *) + | |
3469 | (sizeof(struct cifs_sid) * 2) + (PATH_MAX * 2); | |
3470 | *plen = 0; | |
3471 | ||
3472 | return query_info(xid, tcon, persistent_fid, volatile_fid, | |
3473 | SMB_FIND_FILE_POSIX_INFO, SMB2_O_INFO_FILE, 0, | |
3474 | output_len, sizeof(struct smb311_posix_qinfo), (void **)&data, plen); | |
3475 | } | |
3476 | ||
f0df737e | 3477 | int |
42c493c1 | 3478 | SMB2_query_acl(const unsigned int xid, struct cifs_tcon *tcon, |
f0df737e | 3479 | u64 persistent_fid, u64 volatile_fid, |
42c493c1 | 3480 | void **data, u32 *plen) |
f0df737e | 3481 | { |
42c493c1 SP |
3482 | __u32 additional_info = OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO; |
3483 | *plen = 0; | |
3484 | ||
f0df737e | 3485 | return query_info(xid, tcon, persistent_fid, volatile_fid, |
42c493c1 | 3486 | 0, SMB2_O_INFO_SECURITY, additional_info, |
ee25c6dd | 3487 | SMB2_MAX_BUFFER_SIZE, MIN_SEC_DESC_LEN, data, plen); |
f0df737e PS |
3488 | } |
3489 | ||
3490 | int | |
3491 | SMB2_get_srv_num(const unsigned int xid, struct cifs_tcon *tcon, | |
3492 | u64 persistent_fid, u64 volatile_fid, __le64 *uniqueid) | |
3493 | { | |
3494 | return query_info(xid, tcon, persistent_fid, volatile_fid, | |
42c493c1 SP |
3495 | FILE_INTERNAL_INFORMATION, SMB2_O_INFO_FILE, 0, |
3496 | sizeof(struct smb2_file_internal_info), | |
f0df737e | 3497 | sizeof(struct smb2_file_internal_info), |
42c493c1 | 3498 | (void **)&uniqueid, NULL); |
f0df737e PS |
3499 | } |
3500 | ||
c3498185 SF |
3501 | /* |
3502 | * CHANGE_NOTIFY Request is sent to get notifications on changes to a directory | |
3503 | * See MS-SMB2 2.2.35 and 2.2.36 | |
3504 | */ | |
3505 | ||
388962e8 | 3506 | static int |
c3498185 | 3507 | SMB2_notify_init(const unsigned int xid, struct smb_rqst *rqst, |
352d96f3 AA |
3508 | struct cifs_tcon *tcon, struct TCP_Server_Info *server, |
3509 | u64 persistent_fid, u64 volatile_fid, | |
3510 | u32 completion_filter, bool watch_tree) | |
c3498185 SF |
3511 | { |
3512 | struct smb2_change_notify_req *req; | |
3513 | struct kvec *iov = rqst->rq_iov; | |
3514 | unsigned int total_len; | |
3515 | int rc; | |
3516 | ||
352d96f3 AA |
3517 | rc = smb2_plain_req_init(SMB2_CHANGE_NOTIFY, tcon, server, |
3518 | (void **) &req, &total_len); | |
c3498185 SF |
3519 | if (rc) |
3520 | return rc; | |
3521 | ||
3522 | req->PersistentFileId = persistent_fid; | |
3523 | req->VolatileFileId = volatile_fid; | |
d26c2ddd | 3524 | /* See note 354 of MS-SMB2, 64K max */ |
52870d50 SF |
3525 | req->OutputBufferLength = |
3526 | cpu_to_le32(SMB2_MAX_BUFFER_SIZE - MAX_SMB2_HDR_SIZE); | |
c3498185 SF |
3527 | req->CompletionFilter = cpu_to_le32(completion_filter); |
3528 | if (watch_tree) | |
3529 | req->Flags = cpu_to_le16(SMB2_WATCH_TREE); | |
3530 | else | |
3531 | req->Flags = 0; | |
3532 | ||
3533 | iov[0].iov_base = (char *)req; | |
3534 | iov[0].iov_len = total_len; | |
3535 | ||
3536 | return 0; | |
3537 | } | |
3538 | ||
3539 | int | |
3540 | SMB2_change_notify(const unsigned int xid, struct cifs_tcon *tcon, | |
3541 | u64 persistent_fid, u64 volatile_fid, bool watch_tree, | |
3542 | u32 completion_filter) | |
3543 | { | |
3544 | struct cifs_ses *ses = tcon->ses; | |
352d96f3 | 3545 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
c3498185 SF |
3546 | struct smb_rqst rqst; |
3547 | struct kvec iov[1]; | |
3548 | struct kvec rsp_iov = {NULL, 0}; | |
3549 | int resp_buftype = CIFS_NO_BUFFER; | |
3550 | int flags = 0; | |
3551 | int rc = 0; | |
3552 | ||
3553 | cifs_dbg(FYI, "change notify\n"); | |
352d96f3 | 3554 | if (!ses || !server) |
c3498185 SF |
3555 | return -EIO; |
3556 | ||
3557 | if (smb3_encryption_required(tcon)) | |
3558 | flags |= CIFS_TRANSFORM_REQ; | |
3559 | ||
3560 | memset(&rqst, 0, sizeof(struct smb_rqst)); | |
3561 | memset(&iov, 0, sizeof(iov)); | |
3562 | rqst.rq_iov = iov; | |
3563 | rqst.rq_nvec = 1; | |
3564 | ||
352d96f3 AA |
3565 | rc = SMB2_notify_init(xid, &rqst, tcon, server, |
3566 | persistent_fid, volatile_fid, | |
c3498185 SF |
3567 | completion_filter, watch_tree); |
3568 | if (rc) | |
3569 | goto cnotify_exit; | |
3570 | ||
3571 | trace_smb3_notify_enter(xid, persistent_fid, tcon->tid, ses->Suid, | |
3572 | (u8)watch_tree, completion_filter); | |
352d96f3 AA |
3573 | rc = cifs_send_recv(xid, ses, server, |
3574 | &rqst, &resp_buftype, flags, &rsp_iov); | |
c3498185 SF |
3575 | |
3576 | if (rc != 0) { | |
3577 | cifs_stats_fail_inc(tcon, SMB2_CHANGE_NOTIFY_HE); | |
3578 | trace_smb3_notify_err(xid, persistent_fid, tcon->tid, ses->Suid, | |
3579 | (u8)watch_tree, completion_filter, rc); | |
3580 | } else | |
3581 | trace_smb3_notify_done(xid, persistent_fid, tcon->tid, | |
3582 | ses->Suid, (u8)watch_tree, completion_filter); | |
3583 | ||
3584 | cnotify_exit: | |
3585 | if (rqst.rq_iov) | |
3586 | cifs_small_buf_release(rqst.rq_iov[0].iov_base); /* request */ | |
3587 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); | |
3588 | return rc; | |
3589 | } | |
3590 | ||
3591 | ||
3592 | ||
9094fad1 PS |
3593 | /* |
3594 | * This is a no-op for now. We're not really interested in the reply, but | |
3595 | * rather in the fact that the server sent one and that server->lstrp | |
3596 | * gets updated. | |
3597 | * | |
3598 | * FIXME: maybe we should consider checking that the reply matches request? | |
3599 | */ | |
3600 | static void | |
3601 | smb2_echo_callback(struct mid_q_entry *mid) | |
3602 | { | |
3603 | struct TCP_Server_Info *server = mid->callback_data; | |
31473fc4 | 3604 | struct smb2_echo_rsp *rsp = (struct smb2_echo_rsp *)mid->resp_buf; |
34f4deb7 | 3605 | struct cifs_credits credits = { .value = 0, .instance = 0 }; |
9094fad1 | 3606 | |
0fd1d37b | 3607 | if (mid->mid_state == MID_RESPONSE_RECEIVED |
34f4deb7 PS |
3608 | || mid->mid_state == MID_RESPONSE_MALFORMED) { |
3609 | credits.value = le16_to_cpu(rsp->sync_hdr.CreditRequest); | |
3610 | credits.instance = server->reconnect_instance; | |
3611 | } | |
9094fad1 PS |
3612 | |
3613 | DeleteMidQEntry(mid); | |
34f4deb7 | 3614 | add_credits(server, &credits, CIFS_ECHO_OP); |
9094fad1 PS |
3615 | } |
3616 | ||
53e0e11e PS |
3617 | void smb2_reconnect_server(struct work_struct *work) |
3618 | { | |
3619 | struct TCP_Server_Info *server = container_of(work, | |
3620 | struct TCP_Server_Info, reconnect.work); | |
3621 | struct cifs_ses *ses; | |
3622 | struct cifs_tcon *tcon, *tcon2; | |
3623 | struct list_head tmp_list; | |
3624 | int tcon_exist = false; | |
18ea4311 GP |
3625 | int rc; |
3626 | int resched = false; | |
3627 | ||
53e0e11e PS |
3628 | |
3629 | /* Prevent simultaneous reconnects that can corrupt tcon->rlist list */ | |
3630 | mutex_lock(&server->reconnect_mutex); | |
3631 | ||
3632 | INIT_LIST_HEAD(&tmp_list); | |
3633 | cifs_dbg(FYI, "Need negotiate, reconnecting tcons\n"); | |
3634 | ||
3635 | spin_lock(&cifs_tcp_ses_lock); | |
3636 | list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { | |
3637 | list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { | |
96a988ff | 3638 | if (tcon->need_reconnect || tcon->need_reopen_files) { |
53e0e11e PS |
3639 | tcon->tc_count++; |
3640 | list_add_tail(&tcon->rlist, &tmp_list); | |
3641 | tcon_exist = true; | |
3642 | } | |
3643 | } | |
0ff2b018 RS |
3644 | /* |
3645 | * IPC has the same lifetime as its session and uses its | |
3646 | * refcount. | |
3647 | */ | |
b327a717 AA |
3648 | if (ses->tcon_ipc && ses->tcon_ipc->need_reconnect) { |
3649 | list_add_tail(&ses->tcon_ipc->rlist, &tmp_list); | |
3650 | tcon_exist = true; | |
0ff2b018 | 3651 | ses->ses_count++; |
b327a717 | 3652 | } |
53e0e11e PS |
3653 | } |
3654 | /* | |
3655 | * Get the reference to server struct to be sure that the last call of | |
3656 | * cifs_put_tcon() in the loop below won't release the server pointer. | |
3657 | */ | |
3658 | if (tcon_exist) | |
3659 | server->srv_count++; | |
3660 | ||
3661 | spin_unlock(&cifs_tcp_ses_lock); | |
3662 | ||
3663 | list_for_each_entry_safe(tcon, tcon2, &tmp_list, rlist) { | |
352d96f3 | 3664 | rc = smb2_reconnect(SMB2_INTERNAL_CMD, tcon, server); |
18ea4311 | 3665 | if (!rc) |
96a988ff | 3666 | cifs_reopen_persistent_handles(tcon); |
18ea4311 GP |
3667 | else |
3668 | resched = true; | |
53e0e11e | 3669 | list_del_init(&tcon->rlist); |
0ff2b018 RS |
3670 | if (tcon->ipc) |
3671 | cifs_put_smb_ses(tcon->ses); | |
3672 | else | |
3673 | cifs_put_tcon(tcon); | |
53e0e11e PS |
3674 | } |
3675 | ||
3676 | cifs_dbg(FYI, "Reconnecting tcons finished\n"); | |
18ea4311 GP |
3677 | if (resched) |
3678 | queue_delayed_work(cifsiod_wq, &server->reconnect, 2 * HZ); | |
53e0e11e PS |
3679 | mutex_unlock(&server->reconnect_mutex); |
3680 | ||
3681 | /* now we can safely release srv struct */ | |
3682 | if (tcon_exist) | |
3683 | cifs_put_tcp_session(server, 1); | |
3684 | } | |
3685 | ||
9094fad1 PS |
3686 | int |
3687 | SMB2_echo(struct TCP_Server_Info *server) | |
3688 | { | |
3689 | struct smb2_echo_req *req; | |
3690 | int rc = 0; | |
c713c877 | 3691 | struct kvec iov[1]; |
738f9de5 | 3692 | struct smb_rqst rqst = { .rq_iov = iov, |
c713c877 | 3693 | .rq_nvec = 1 }; |
7f7ae759 | 3694 | unsigned int total_len; |
9094fad1 | 3695 | |
f96637be | 3696 | cifs_dbg(FYI, "In echo request\n"); |
9094fad1 | 3697 | |
4fcd1813 | 3698 | if (server->tcpStatus == CifsNeedNegotiate) { |
53e0e11e | 3699 | /* No need to send echo on newly established connections */ |
b08484d7 | 3700 | mod_delayed_work(cifsiod_wq, &server->reconnect, 0); |
53e0e11e | 3701 | return rc; |
4fcd1813 SF |
3702 | } |
3703 | ||
352d96f3 AA |
3704 | rc = smb2_plain_req_init(SMB2_ECHO, NULL, server, |
3705 | (void **)&req, &total_len); | |
9094fad1 PS |
3706 | if (rc) |
3707 | return rc; | |
3708 | ||
7f7ae759 | 3709 | req->sync_hdr.CreditRequest = cpu_to_le16(1); |
9094fad1 | 3710 | |
c713c877 RS |
3711 | iov[0].iov_len = total_len; |
3712 | iov[0].iov_base = (char *)req; | |
9094fad1 | 3713 | |
9b7c18a2 | 3714 | rc = cifs_call_async(server, &rqst, NULL, smb2_echo_callback, NULL, |
3349c3a7 | 3715 | server, CIFS_ECHO_OP, NULL); |
9094fad1 | 3716 | if (rc) |
f96637be | 3717 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
9094fad1 PS |
3718 | |
3719 | cifs_small_buf_release(req); | |
3720 | return rc; | |
3721 | } | |
7a5cfb19 | 3722 | |
86e14e12 RS |
3723 | void |
3724 | SMB2_flush_free(struct smb_rqst *rqst) | |
3725 | { | |
3726 | if (rqst && rqst->rq_iov) | |
3727 | cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */ | |
3728 | } | |
3729 | ||
7a5cfb19 | 3730 | int |
86e14e12 | 3731 | SMB2_flush_init(const unsigned int xid, struct smb_rqst *rqst, |
352d96f3 AA |
3732 | struct cifs_tcon *tcon, struct TCP_Server_Info *server, |
3733 | u64 persistent_fid, u64 volatile_fid) | |
7a5cfb19 PS |
3734 | { |
3735 | struct smb2_flush_req *req; | |
86e14e12 | 3736 | struct kvec *iov = rqst->rq_iov; |
1f444e4c | 3737 | unsigned int total_len; |
86e14e12 | 3738 | int rc; |
7a5cfb19 | 3739 | |
352d96f3 AA |
3740 | rc = smb2_plain_req_init(SMB2_FLUSH, tcon, server, |
3741 | (void **) &req, &total_len); | |
7a5cfb19 PS |
3742 | if (rc) |
3743 | return rc; | |
3744 | ||
3745 | req->PersistentFileId = persistent_fid; | |
3746 | req->VolatileFileId = volatile_fid; | |
3747 | ||
3748 | iov[0].iov_base = (char *)req; | |
1f444e4c | 3749 | iov[0].iov_len = total_len; |
7a5cfb19 | 3750 | |
86e14e12 RS |
3751 | return 0; |
3752 | } | |
3753 | ||
3754 | int | |
3755 | SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, | |
3756 | u64 volatile_fid) | |
3757 | { | |
3758 | struct cifs_ses *ses = tcon->ses; | |
3759 | struct smb_rqst rqst; | |
3760 | struct kvec iov[1]; | |
3761 | struct kvec rsp_iov = {NULL, 0}; | |
352d96f3 | 3762 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
86e14e12 RS |
3763 | int resp_buftype = CIFS_NO_BUFFER; |
3764 | int flags = 0; | |
3765 | int rc = 0; | |
3766 | ||
3767 | cifs_dbg(FYI, "flush\n"); | |
3768 | if (!ses || !(ses->server)) | |
3769 | return -EIO; | |
3770 | ||
3771 | if (smb3_encryption_required(tcon)) | |
3772 | flags |= CIFS_TRANSFORM_REQ; | |
3773 | ||
40eff45b | 3774 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
86e14e12 | 3775 | memset(&iov, 0, sizeof(iov)); |
40eff45b RS |
3776 | rqst.rq_iov = iov; |
3777 | rqst.rq_nvec = 1; | |
3778 | ||
352d96f3 AA |
3779 | rc = SMB2_flush_init(xid, &rqst, tcon, server, |
3780 | persistent_fid, volatile_fid); | |
86e14e12 RS |
3781 | if (rc) |
3782 | goto flush_exit; | |
3783 | ||
f90f9797 | 3784 | trace_smb3_flush_enter(xid, persistent_fid, tcon->tid, ses->Suid); |
352d96f3 AA |
3785 | rc = cifs_send_recv(xid, ses, server, |
3786 | &rqst, &resp_buftype, flags, &rsp_iov); | |
7a5cfb19 | 3787 | |
eccb4422 | 3788 | if (rc != 0) { |
7a5cfb19 | 3789 | cifs_stats_fail_inc(tcon, SMB2_FLUSH_HE); |
eccb4422 SF |
3790 | trace_smb3_flush_err(xid, persistent_fid, tcon->tid, ses->Suid, |
3791 | rc); | |
f90f9797 SF |
3792 | } else |
3793 | trace_smb3_flush_done(xid, persistent_fid, tcon->tid, | |
3794 | ses->Suid); | |
7a5cfb19 | 3795 | |
86e14e12 RS |
3796 | flush_exit: |
3797 | SMB2_flush_free(&rqst); | |
da502f7d | 3798 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); |
7a5cfb19 PS |
3799 | return rc; |
3800 | } | |
09a4707e PS |
3801 | |
3802 | /* | |
3803 | * To form a chain of read requests, any read requests after the first should | |
3804 | * have the end_of_chain boolean set to true. | |
3805 | */ | |
3806 | static int | |
738f9de5 | 3807 | smb2_new_read_req(void **buf, unsigned int *total_len, |
2dabfd5b LL |
3808 | struct cifs_io_parms *io_parms, struct cifs_readdata *rdata, |
3809 | unsigned int remaining_bytes, int request_type) | |
09a4707e PS |
3810 | { |
3811 | int rc = -EACCES; | |
b8f57ee8 | 3812 | struct smb2_read_plain_req *req = NULL; |
31473fc4 | 3813 | struct smb2_sync_hdr *shdr; |
352d96f3 | 3814 | struct TCP_Server_Info *server = io_parms->server; |
09a4707e | 3815 | |
352d96f3 AA |
3816 | rc = smb2_plain_req_init(SMB2_READ, io_parms->tcon, server, |
3817 | (void **) &req, total_len); | |
09a4707e PS |
3818 | if (rc) |
3819 | return rc; | |
2dabfd5b | 3820 | |
2dabfd5b | 3821 | if (server == NULL) |
09a4707e PS |
3822 | return -ECONNABORTED; |
3823 | ||
b8f57ee8 | 3824 | shdr = &req->sync_hdr; |
31473fc4 | 3825 | shdr->ProcessId = cpu_to_le32(io_parms->pid); |
09a4707e PS |
3826 | |
3827 | req->PersistentFileId = io_parms->persistent_fid; | |
3828 | req->VolatileFileId = io_parms->volatile_fid; | |
3829 | req->ReadChannelInfoOffset = 0; /* reserved */ | |
3830 | req->ReadChannelInfoLength = 0; /* reserved */ | |
3831 | req->Channel = 0; /* reserved */ | |
3832 | req->MinimumCount = 0; | |
3833 | req->Length = cpu_to_le32(io_parms->length); | |
3834 | req->Offset = cpu_to_le64(io_parms->offset); | |
d323c246 SF |
3835 | |
3836 | trace_smb3_read_enter(0 /* xid */, | |
3837 | io_parms->persistent_fid, | |
3838 | io_parms->tcon->tid, io_parms->tcon->ses->Suid, | |
3839 | io_parms->offset, io_parms->length); | |
bd3dcc6a LL |
3840 | #ifdef CONFIG_CIFS_SMB_DIRECT |
3841 | /* | |
3842 | * If we want to do a RDMA write, fill in and append | |
3843 | * smbd_buffer_descriptor_v1 to the end of read request | |
3844 | */ | |
bb4c0419 | 3845 | if (server->rdma && rdata && !server->sign && |
bd3dcc6a LL |
3846 | rdata->bytes >= server->smbd_conn->rdma_readwrite_threshold) { |
3847 | ||
3848 | struct smbd_buffer_descriptor_v1 *v1; | |
352d96f3 | 3849 | bool need_invalidate = server->dialect == SMB30_PROT_ID; |
bd3dcc6a LL |
3850 | |
3851 | rdata->mr = smbd_register_mr( | |
3852 | server->smbd_conn, rdata->pages, | |
7cf20bce LL |
3853 | rdata->nr_pages, rdata->page_offset, |
3854 | rdata->tailsz, true, need_invalidate); | |
bd3dcc6a | 3855 | if (!rdata->mr) |
b7972092 | 3856 | return -EAGAIN; |
bd3dcc6a LL |
3857 | |
3858 | req->Channel = SMB2_CHANNEL_RDMA_V1_INVALIDATE; | |
3859 | if (need_invalidate) | |
3860 | req->Channel = SMB2_CHANNEL_RDMA_V1; | |
3861 | req->ReadChannelInfoOffset = | |
2026b06e | 3862 | cpu_to_le16(offsetof(struct smb2_read_plain_req, Buffer)); |
bd3dcc6a | 3863 | req->ReadChannelInfoLength = |
2026b06e | 3864 | cpu_to_le16(sizeof(struct smbd_buffer_descriptor_v1)); |
bd3dcc6a | 3865 | v1 = (struct smbd_buffer_descriptor_v1 *) &req->Buffer[0]; |
2026b06e SF |
3866 | v1->offset = cpu_to_le64(rdata->mr->mr->iova); |
3867 | v1->token = cpu_to_le32(rdata->mr->mr->rkey); | |
3868 | v1->length = cpu_to_le32(rdata->mr->mr->length); | |
bd3dcc6a LL |
3869 | |
3870 | *total_len += sizeof(*v1) - 1; | |
3871 | } | |
3872 | #endif | |
09a4707e PS |
3873 | if (request_type & CHAINED_REQUEST) { |
3874 | if (!(request_type & END_OF_CHAIN)) { | |
b8f57ee8 PS |
3875 | /* next 8-byte aligned request */ |
3876 | *total_len = DIV_ROUND_UP(*total_len, 8) * 8; | |
3877 | shdr->NextCommand = cpu_to_le32(*total_len); | |
09a4707e | 3878 | } else /* END_OF_CHAIN */ |
31473fc4 | 3879 | shdr->NextCommand = 0; |
09a4707e | 3880 | if (request_type & RELATED_REQUEST) { |
31473fc4 | 3881 | shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS; |
09a4707e PS |
3882 | /* |
3883 | * Related requests use info from previous read request | |
3884 | * in chain. | |
3885 | */ | |
31473fc4 PS |
3886 | shdr->SessionId = 0xFFFFFFFF; |
3887 | shdr->TreeId = 0xFFFFFFFF; | |
09a4707e PS |
3888 | req->PersistentFileId = 0xFFFFFFFF; |
3889 | req->VolatileFileId = 0xFFFFFFFF; | |
3890 | } | |
3891 | } | |
3892 | if (remaining_bytes > io_parms->length) | |
3893 | req->RemainingBytes = cpu_to_le32(remaining_bytes); | |
3894 | else | |
3895 | req->RemainingBytes = 0; | |
3896 | ||
738f9de5 | 3897 | *buf = req; |
09a4707e PS |
3898 | return rc; |
3899 | } | |
3900 | ||
3901 | static void | |
3902 | smb2_readv_callback(struct mid_q_entry *mid) | |
3903 | { | |
3904 | struct cifs_readdata *rdata = mid->callback_data; | |
3905 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
352d96f3 | 3906 | struct TCP_Server_Info *server = rdata->server; |
738f9de5 | 3907 | struct smb2_sync_hdr *shdr = |
977b6170 | 3908 | (struct smb2_sync_hdr *)rdata->iov[0].iov_base; |
34f4deb7 | 3909 | struct cifs_credits credits = { .value = 0, .instance = 0 }; |
46f17d17 SF |
3910 | struct smb_rqst rqst = { .rq_iov = &rdata->iov[1], |
3911 | .rq_nvec = 1, | |
8321fec4 | 3912 | .rq_pages = rdata->pages, |
1dbe3466 | 3913 | .rq_offset = rdata->page_offset, |
8321fec4 JL |
3914 | .rq_npages = rdata->nr_pages, |
3915 | .rq_pagesz = rdata->pagesz, | |
3916 | .rq_tailsz = rdata->tailsz }; | |
09a4707e | 3917 | |
352d96f3 AA |
3918 | WARN_ONCE(rdata->server != mid->server, |
3919 | "rdata server %p != mid server %p", | |
3920 | rdata->server, mid->server); | |
3921 | ||
f96637be JP |
3922 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
3923 | __func__, mid->mid, mid->mid_state, rdata->result, | |
3924 | rdata->bytes); | |
09a4707e PS |
3925 | |
3926 | switch (mid->mid_state) { | |
3927 | case MID_RESPONSE_RECEIVED: | |
34f4deb7 PS |
3928 | credits.value = le16_to_cpu(shdr->CreditRequest); |
3929 | credits.instance = server->reconnect_instance; | |
09a4707e | 3930 | /* result already set, check signature */ |
4326ed2f | 3931 | if (server->sign && !mid->decrypted) { |
3c1bf7e4 PS |
3932 | int rc; |
3933 | ||
0b688cfc | 3934 | rc = smb2_verify_signature(&rqst, server); |
3c1bf7e4 | 3935 | if (rc) |
3175eb9b | 3936 | cifs_tcon_dbg(VFS, "SMB signature verification returned error = %d\n", |
f96637be | 3937 | rc); |
3c1bf7e4 | 3938 | } |
09a4707e | 3939 | /* FIXME: should this be counted toward the initiating task? */ |
34a54d61 PS |
3940 | task_io_account_read(rdata->got_bytes); |
3941 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
09a4707e PS |
3942 | break; |
3943 | case MID_REQUEST_SUBMITTED: | |
3944 | case MID_RETRY_NEEDED: | |
3945 | rdata->result = -EAGAIN; | |
d913ed17 PS |
3946 | if (server->sign && rdata->got_bytes) |
3947 | /* reset bytes number since we can not check a sign */ | |
3948 | rdata->got_bytes = 0; | |
3949 | /* FIXME: should this be counted toward the initiating task? */ | |
3950 | task_io_account_read(rdata->got_bytes); | |
3951 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
09a4707e | 3952 | break; |
0fd1d37b | 3953 | case MID_RESPONSE_MALFORMED: |
34f4deb7 PS |
3954 | credits.value = le16_to_cpu(shdr->CreditRequest); |
3955 | credits.instance = server->reconnect_instance; | |
30b5ae21 | 3956 | fallthrough; |
09a4707e | 3957 | default: |
6b15eb18 | 3958 | rdata->result = -EIO; |
09a4707e | 3959 | } |
bd3dcc6a LL |
3960 | #ifdef CONFIG_CIFS_SMB_DIRECT |
3961 | /* | |
3962 | * If this rdata has a memmory registered, the MR can be freed | |
3963 | * MR needs to be freed as soon as I/O finishes to prevent deadlock | |
3964 | * because they have limited number and are used for future I/Os | |
3965 | */ | |
3966 | if (rdata->mr) { | |
3967 | smbd_deregister_mr(rdata->mr); | |
3968 | rdata->mr = NULL; | |
3969 | } | |
3970 | #endif | |
082aaa87 | 3971 | if (rdata->result && rdata->result != -ENODATA) { |
09a4707e | 3972 | cifs_stats_fail_inc(tcon, SMB2_READ_HE); |
7d42e72f PS |
3973 | trace_smb3_read_err(0 /* xid */, |
3974 | rdata->cfile->fid.persistent_fid, | |
3975 | tcon->tid, tcon->ses->Suid, rdata->offset, | |
3976 | rdata->bytes, rdata->result); | |
3977 | } else | |
3978 | trace_smb3_read_done(0 /* xid */, | |
3979 | rdata->cfile->fid.persistent_fid, | |
3980 | tcon->tid, tcon->ses->Suid, | |
3981 | rdata->offset, rdata->got_bytes); | |
09a4707e PS |
3982 | |
3983 | queue_work(cifsiod_wq, &rdata->work); | |
3984 | DeleteMidQEntry(mid); | |
34f4deb7 | 3985 | add_credits(server, &credits, 0); |
09a4707e PS |
3986 | } |
3987 | ||
738f9de5 | 3988 | /* smb2_async_readv - send an async read, and set up mid to handle result */ |
09a4707e PS |
3989 | int |
3990 | smb2_async_readv(struct cifs_readdata *rdata) | |
3991 | { | |
bed9da02 | 3992 | int rc, flags = 0; |
31473fc4 PS |
3993 | char *buf; |
3994 | struct smb2_sync_hdr *shdr; | |
09a4707e | 3995 | struct cifs_io_parms io_parms; |
738f9de5 | 3996 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
c713c877 | 3997 | .rq_nvec = 1 }; |
bed9da02 | 3998 | struct TCP_Server_Info *server; |
352d96f3 | 3999 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); |
738f9de5 | 4000 | unsigned int total_len; |
09a4707e | 4001 | |
f96637be JP |
4002 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
4003 | __func__, rdata->offset, rdata->bytes); | |
09a4707e | 4004 | |
352d96f3 AA |
4005 | if (!rdata->server) |
4006 | rdata->server = cifs_pick_channel(tcon->ses); | |
4007 | ||
09a4707e | 4008 | io_parms.tcon = tlink_tcon(rdata->cfile->tlink); |
352d96f3 | 4009 | io_parms.server = server = rdata->server; |
09a4707e PS |
4010 | io_parms.offset = rdata->offset; |
4011 | io_parms.length = rdata->bytes; | |
4012 | io_parms.persistent_fid = rdata->cfile->fid.persistent_fid; | |
4013 | io_parms.volatile_fid = rdata->cfile->fid.volatile_fid; | |
4014 | io_parms.pid = rdata->pid; | |
bed9da02 | 4015 | |
2dabfd5b LL |
4016 | rc = smb2_new_read_req( |
4017 | (void **) &buf, &total_len, &io_parms, rdata, 0, 0); | |
f0b93cb9 | 4018 | if (rc) |
09a4707e PS |
4019 | return rc; |
4020 | ||
5a77e75f | 4021 | if (smb3_encryption_required(io_parms.tcon)) |
7fb8986e PS |
4022 | flags |= CIFS_TRANSFORM_REQ; |
4023 | ||
c713c877 RS |
4024 | rdata->iov[0].iov_base = buf; |
4025 | rdata->iov[0].iov_len = total_len; | |
b8f57ee8 PS |
4026 | |
4027 | shdr = (struct smb2_sync_hdr *)buf; | |
09a4707e | 4028 | |
335b7b62 | 4029 | if (rdata->credits.value > 0) { |
31473fc4 | 4030 | shdr->CreditCharge = cpu_to_le16(DIV_ROUND_UP(rdata->bytes, |
bed9da02 | 4031 | SMB2_MAX_BUFFER_SIZE)); |
b983f7e9 PS |
4032 | shdr->CreditRequest = |
4033 | cpu_to_le16(le16_to_cpu(shdr->CreditCharge) + 1); | |
9a1c67e8 PS |
4034 | |
4035 | rc = adjust_credits(server, &rdata->credits, rdata->bytes); | |
4036 | if (rc) | |
335b7b62 | 4037 | goto async_readv_out; |
9a1c67e8 | 4038 | |
7fb8986e | 4039 | flags |= CIFS_HAS_CREDITS; |
bed9da02 PS |
4040 | } |
4041 | ||
09a4707e | 4042 | kref_get(&rdata->refcount); |
352d96f3 | 4043 | rc = cifs_call_async(server, &rqst, |
09a4707e | 4044 | cifs_readv_receive, smb2_readv_callback, |
3349c3a7 PS |
4045 | smb3_handle_read_data, rdata, flags, |
4046 | &rdata->credits); | |
e5d04887 | 4047 | if (rc) { |
09a4707e | 4048 | kref_put(&rdata->refcount, cifs_readdata_release); |
e5d04887 | 4049 | cifs_stats_fail_inc(io_parms.tcon, SMB2_READ_HE); |
7d42e72f PS |
4050 | trace_smb3_read_err(0 /* xid */, io_parms.persistent_fid, |
4051 | io_parms.tcon->tid, | |
4052 | io_parms.tcon->ses->Suid, | |
4053 | io_parms.offset, io_parms.length, rc); | |
4054 | } | |
09a4707e | 4055 | |
335b7b62 | 4056 | async_readv_out: |
09a4707e PS |
4057 | cifs_small_buf_release(buf); |
4058 | return rc; | |
4059 | } | |
33319141 | 4060 | |
d8e05039 PS |
4061 | int |
4062 | SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms, | |
4063 | unsigned int *nbytes, char **buf, int *buf_type) | |
4064 | { | |
40eff45b | 4065 | struct smb_rqst rqst; |
1efd4fc7 | 4066 | int resp_buftype, rc; |
b8f57ee8 | 4067 | struct smb2_read_plain_req *req = NULL; |
d8e05039 | 4068 | struct smb2_read_rsp *rsp = NULL; |
f5688a6d | 4069 | struct kvec iov[1]; |
da502f7d | 4070 | struct kvec rsp_iov; |
738f9de5 | 4071 | unsigned int total_len; |
7fb8986e PS |
4072 | int flags = CIFS_LOG_ERROR; |
4073 | struct cifs_ses *ses = io_parms->tcon->ses; | |
d8e05039 | 4074 | |
352d96f3 AA |
4075 | if (!io_parms->server) |
4076 | io_parms->server = cifs_pick_channel(io_parms->tcon->ses); | |
4077 | ||
d8e05039 | 4078 | *nbytes = 0; |
2dabfd5b | 4079 | rc = smb2_new_read_req((void **)&req, &total_len, io_parms, NULL, 0, 0); |
d8e05039 PS |
4080 | if (rc) |
4081 | return rc; | |
4082 | ||
5a77e75f | 4083 | if (smb3_encryption_required(io_parms->tcon)) |
7fb8986e PS |
4084 | flags |= CIFS_TRANSFORM_REQ; |
4085 | ||
f5688a6d RS |
4086 | iov[0].iov_base = (char *)req; |
4087 | iov[0].iov_len = total_len; | |
b8f57ee8 | 4088 | |
40eff45b RS |
4089 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
4090 | rqst.rq_iov = iov; | |
4091 | rqst.rq_nvec = 1; | |
4092 | ||
352d96f3 AA |
4093 | rc = cifs_send_recv(xid, ses, io_parms->server, |
4094 | &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d | 4095 | rsp = (struct smb2_read_rsp *)rsp_iov.iov_base; |
d8e05039 | 4096 | |
a821df3f RS |
4097 | if (rc) { |
4098 | if (rc != -ENODATA) { | |
4099 | cifs_stats_fail_inc(io_parms->tcon, SMB2_READ_HE); | |
4100 | cifs_dbg(VFS, "Send error in read = %d\n", rc); | |
7d42e72f PS |
4101 | trace_smb3_read_err(xid, req->PersistentFileId, |
4102 | io_parms->tcon->tid, ses->Suid, | |
4103 | io_parms->offset, io_parms->length, | |
4104 | rc); | |
b0a42f2a SF |
4105 | } else |
4106 | trace_smb3_read_done(xid, req->PersistentFileId, | |
4107 | io_parms->tcon->tid, ses->Suid, | |
4108 | io_parms->offset, 0); | |
da502f7d | 4109 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); |
05fd5c2c | 4110 | cifs_small_buf_release(req); |
a821df3f | 4111 | return rc == -ENODATA ? 0 : rc; |
eccb4422 SF |
4112 | } else |
4113 | trace_smb3_read_done(xid, req->PersistentFileId, | |
4114 | io_parms->tcon->tid, ses->Suid, | |
4115 | io_parms->offset, io_parms->length); | |
d8e05039 | 4116 | |
088aaf17 Z |
4117 | cifs_small_buf_release(req); |
4118 | ||
a821df3f RS |
4119 | *nbytes = le32_to_cpu(rsp->DataLength); |
4120 | if ((*nbytes > CIFS_MAX_MSGSIZE) || | |
4121 | (*nbytes > io_parms->length)) { | |
4122 | cifs_dbg(FYI, "bad length %d for count %d\n", | |
4123 | *nbytes, io_parms->length); | |
4124 | rc = -EIO; | |
4125 | *nbytes = 0; | |
d8e05039 PS |
4126 | } |
4127 | ||
4128 | if (*buf) { | |
977b6170 | 4129 | memcpy(*buf, (char *)rsp + rsp->DataOffset, *nbytes); |
da502f7d | 4130 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); |
d8e05039 | 4131 | } else if (resp_buftype != CIFS_NO_BUFFER) { |
da502f7d | 4132 | *buf = rsp_iov.iov_base; |
d8e05039 PS |
4133 | if (resp_buftype == CIFS_SMALL_BUFFER) |
4134 | *buf_type = CIFS_SMALL_BUFFER; | |
4135 | else if (resp_buftype == CIFS_LARGE_BUFFER) | |
4136 | *buf_type = CIFS_LARGE_BUFFER; | |
4137 | } | |
4138 | return rc; | |
4139 | } | |
4140 | ||
33319141 PS |
4141 | /* |
4142 | * Check the mid_state and signature on received buffer (if any), and queue the | |
4143 | * workqueue completion task. | |
4144 | */ | |
4145 | static void | |
4146 | smb2_writev_callback(struct mid_q_entry *mid) | |
4147 | { | |
4148 | struct cifs_writedata *wdata = mid->callback_data; | |
4149 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); | |
352d96f3 | 4150 | struct TCP_Server_Info *server = wdata->server; |
33319141 PS |
4151 | unsigned int written; |
4152 | struct smb2_write_rsp *rsp = (struct smb2_write_rsp *)mid->resp_buf; | |
34f4deb7 | 4153 | struct cifs_credits credits = { .value = 0, .instance = 0 }; |
33319141 | 4154 | |
352d96f3 AA |
4155 | WARN_ONCE(wdata->server != mid->server, |
4156 | "wdata server %p != mid server %p", | |
4157 | wdata->server, mid->server); | |
4158 | ||
33319141 PS |
4159 | switch (mid->mid_state) { |
4160 | case MID_RESPONSE_RECEIVED: | |
34f4deb7 PS |
4161 | credits.value = le16_to_cpu(rsp->sync_hdr.CreditRequest); |
4162 | credits.instance = server->reconnect_instance; | |
4163 | wdata->result = smb2_check_receive(mid, server, 0); | |
33319141 PS |
4164 | if (wdata->result != 0) |
4165 | break; | |
4166 | ||
4167 | written = le32_to_cpu(rsp->DataLength); | |
4168 | /* | |
4169 | * Mask off high 16 bits when bytes written as returned | |
4170 | * by the server is greater than bytes requested by the | |
4171 | * client. OS/2 servers are known to set incorrect | |
4172 | * CountHigh values. | |
4173 | */ | |
4174 | if (written > wdata->bytes) | |
4175 | written &= 0xFFFF; | |
4176 | ||
4177 | if (written < wdata->bytes) | |
4178 | wdata->result = -ENOSPC; | |
4179 | else | |
4180 | wdata->bytes = written; | |
4181 | break; | |
4182 | case MID_REQUEST_SUBMITTED: | |
4183 | case MID_RETRY_NEEDED: | |
4184 | wdata->result = -EAGAIN; | |
4185 | break; | |
0fd1d37b | 4186 | case MID_RESPONSE_MALFORMED: |
34f4deb7 PS |
4187 | credits.value = le16_to_cpu(rsp->sync_hdr.CreditRequest); |
4188 | credits.instance = server->reconnect_instance; | |
30b5ae21 | 4189 | fallthrough; |
33319141 PS |
4190 | default: |
4191 | wdata->result = -EIO; | |
4192 | break; | |
4193 | } | |
db223a59 LL |
4194 | #ifdef CONFIG_CIFS_SMB_DIRECT |
4195 | /* | |
4196 | * If this wdata has a memory registered, the MR can be freed | |
4197 | * The number of MRs available is limited, it's important to recover | |
4198 | * used MR as soon as I/O is finished. Hold MR longer in the later | |
4199 | * I/O process can possibly result in I/O deadlock due to lack of MR | |
4200 | * to send request on I/O retry | |
4201 | */ | |
4202 | if (wdata->mr) { | |
4203 | smbd_deregister_mr(wdata->mr); | |
4204 | wdata->mr = NULL; | |
4205 | } | |
4206 | #endif | |
7d42e72f | 4207 | if (wdata->result) { |
33319141 | 4208 | cifs_stats_fail_inc(tcon, SMB2_WRITE_HE); |
7d42e72f PS |
4209 | trace_smb3_write_err(0 /* no xid */, |
4210 | wdata->cfile->fid.persistent_fid, | |
4211 | tcon->tid, tcon->ses->Suid, wdata->offset, | |
4212 | wdata->bytes, wdata->result); | |
d6fd4190 | 4213 | if (wdata->result == -ENOSPC) |
a0a3036b JP |
4214 | pr_warn_once("Out of space writing to %s\n", |
4215 | tcon->treeName); | |
7d42e72f PS |
4216 | } else |
4217 | trace_smb3_write_done(0 /* no xid */, | |
4218 | wdata->cfile->fid.persistent_fid, | |
4219 | tcon->tid, tcon->ses->Suid, | |
4220 | wdata->offset, wdata->bytes); | |
33319141 PS |
4221 | |
4222 | queue_work(cifsiod_wq, &wdata->work); | |
4223 | DeleteMidQEntry(mid); | |
34f4deb7 | 4224 | add_credits(server, &credits, 0); |
33319141 PS |
4225 | } |
4226 | ||
4227 | /* smb2_async_writev - send an async write, and set up mid to handle result */ | |
4228 | int | |
4a5c80d7 SF |
4229 | smb2_async_writev(struct cifs_writedata *wdata, |
4230 | void (*release)(struct kref *kref)) | |
33319141 | 4231 | { |
cb7e9eab | 4232 | int rc = -EACCES, flags = 0; |
33319141 | 4233 | struct smb2_write_req *req = NULL; |
31473fc4 | 4234 | struct smb2_sync_hdr *shdr; |
33319141 | 4235 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
352d96f3 | 4236 | struct TCP_Server_Info *server = wdata->server; |
c713c877 | 4237 | struct kvec iov[1]; |
738f9de5 | 4238 | struct smb_rqst rqst = { }; |
f5688a6d | 4239 | unsigned int total_len; |
33319141 | 4240 | |
352d96f3 AA |
4241 | if (!wdata->server) |
4242 | server = wdata->server = cifs_pick_channel(tcon->ses); | |
4243 | ||
4244 | rc = smb2_plain_req_init(SMB2_WRITE, tcon, server, | |
4245 | (void **) &req, &total_len); | |
f0b93cb9 PS |
4246 | if (rc) |
4247 | return rc; | |
33319141 | 4248 | |
5a77e75f | 4249 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
4250 | flags |= CIFS_TRANSFORM_REQ; |
4251 | ||
f5688a6d | 4252 | shdr = (struct smb2_sync_hdr *)req; |
31473fc4 | 4253 | shdr->ProcessId = cpu_to_le32(wdata->cfile->pid); |
33319141 PS |
4254 | |
4255 | req->PersistentFileId = wdata->cfile->fid.persistent_fid; | |
4256 | req->VolatileFileId = wdata->cfile->fid.volatile_fid; | |
4257 | req->WriteChannelInfoOffset = 0; | |
4258 | req->WriteChannelInfoLength = 0; | |
4259 | req->Channel = 0; | |
4260 | req->Offset = cpu_to_le64(wdata->offset); | |
33319141 | 4261 | req->DataOffset = cpu_to_le16( |
f5688a6d | 4262 | offsetof(struct smb2_write_req, Buffer)); |
33319141 | 4263 | req->RemainingBytes = 0; |
d323c246 SF |
4264 | |
4265 | trace_smb3_write_enter(0 /* xid */, wdata->cfile->fid.persistent_fid, | |
4266 | tcon->tid, tcon->ses->Suid, wdata->offset, wdata->bytes); | |
db223a59 LL |
4267 | #ifdef CONFIG_CIFS_SMB_DIRECT |
4268 | /* | |
4269 | * If we want to do a server RDMA read, fill in and append | |
4270 | * smbd_buffer_descriptor_v1 to the end of write request | |
4271 | */ | |
bb4c0419 | 4272 | if (server->rdma && !server->sign && wdata->bytes >= |
db223a59 LL |
4273 | server->smbd_conn->rdma_readwrite_threshold) { |
4274 | ||
4275 | struct smbd_buffer_descriptor_v1 *v1; | |
4276 | bool need_invalidate = server->dialect == SMB30_PROT_ID; | |
4277 | ||
4278 | wdata->mr = smbd_register_mr( | |
4279 | server->smbd_conn, wdata->pages, | |
7cf20bce LL |
4280 | wdata->nr_pages, wdata->page_offset, |
4281 | wdata->tailsz, false, need_invalidate); | |
db223a59 | 4282 | if (!wdata->mr) { |
b7972092 | 4283 | rc = -EAGAIN; |
db223a59 LL |
4284 | goto async_writev_out; |
4285 | } | |
4286 | req->Length = 0; | |
4287 | req->DataOffset = 0; | |
7cf20bce LL |
4288 | if (wdata->nr_pages > 1) |
4289 | req->RemainingBytes = | |
4290 | cpu_to_le32( | |
4291 | (wdata->nr_pages - 1) * wdata->pagesz - | |
4292 | wdata->page_offset + wdata->tailsz | |
4293 | ); | |
4294 | else | |
4295 | req->RemainingBytes = cpu_to_le32(wdata->tailsz); | |
db223a59 LL |
4296 | req->Channel = SMB2_CHANNEL_RDMA_V1_INVALIDATE; |
4297 | if (need_invalidate) | |
4298 | req->Channel = SMB2_CHANNEL_RDMA_V1; | |
4299 | req->WriteChannelInfoOffset = | |
2026b06e | 4300 | cpu_to_le16(offsetof(struct smb2_write_req, Buffer)); |
db223a59 | 4301 | req->WriteChannelInfoLength = |
2026b06e | 4302 | cpu_to_le16(sizeof(struct smbd_buffer_descriptor_v1)); |
db223a59 | 4303 | v1 = (struct smbd_buffer_descriptor_v1 *) &req->Buffer[0]; |
2026b06e SF |
4304 | v1->offset = cpu_to_le64(wdata->mr->mr->iova); |
4305 | v1->token = cpu_to_le32(wdata->mr->mr->rkey); | |
4306 | v1->length = cpu_to_le32(wdata->mr->mr->length); | |
db223a59 LL |
4307 | } |
4308 | #endif | |
c713c877 RS |
4309 | iov[0].iov_len = total_len - 1; |
4310 | iov[0].iov_base = (char *)req; | |
33319141 | 4311 | |
738f9de5 | 4312 | rqst.rq_iov = iov; |
c713c877 | 4313 | rqst.rq_nvec = 1; |
eddb079d | 4314 | rqst.rq_pages = wdata->pages; |
57a929a6 | 4315 | rqst.rq_offset = wdata->page_offset; |
eddb079d JL |
4316 | rqst.rq_npages = wdata->nr_pages; |
4317 | rqst.rq_pagesz = wdata->pagesz; | |
4318 | rqst.rq_tailsz = wdata->tailsz; | |
db223a59 LL |
4319 | #ifdef CONFIG_CIFS_SMB_DIRECT |
4320 | if (wdata->mr) { | |
c713c877 | 4321 | iov[0].iov_len += sizeof(struct smbd_buffer_descriptor_v1); |
db223a59 LL |
4322 | rqst.rq_npages = 0; |
4323 | } | |
4324 | #endif | |
f96637be JP |
4325 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
4326 | wdata->offset, wdata->bytes); | |
33319141 | 4327 | |
db223a59 LL |
4328 | #ifdef CONFIG_CIFS_SMB_DIRECT |
4329 | /* For RDMA read, I/O size is in RemainingBytes not in Length */ | |
4330 | if (!wdata->mr) | |
4331 | req->Length = cpu_to_le32(wdata->bytes); | |
4332 | #else | |
33319141 | 4333 | req->Length = cpu_to_le32(wdata->bytes); |
db223a59 | 4334 | #endif |
33319141 | 4335 | |
335b7b62 | 4336 | if (wdata->credits.value > 0) { |
31473fc4 | 4337 | shdr->CreditCharge = cpu_to_le16(DIV_ROUND_UP(wdata->bytes, |
cb7e9eab | 4338 | SMB2_MAX_BUFFER_SIZE)); |
b983f7e9 PS |
4339 | shdr->CreditRequest = |
4340 | cpu_to_le16(le16_to_cpu(shdr->CreditCharge) + 1); | |
9a1c67e8 PS |
4341 | |
4342 | rc = adjust_credits(server, &wdata->credits, wdata->bytes); | |
4343 | if (rc) | |
335b7b62 | 4344 | goto async_writev_out; |
9a1c67e8 | 4345 | |
7fb8986e | 4346 | flags |= CIFS_HAS_CREDITS; |
cb7e9eab PS |
4347 | } |
4348 | ||
33319141 | 4349 | kref_get(&wdata->refcount); |
9b7c18a2 | 4350 | rc = cifs_call_async(server, &rqst, NULL, smb2_writev_callback, NULL, |
3349c3a7 | 4351 | wdata, flags, &wdata->credits); |
33319141 | 4352 | |
e5d04887 | 4353 | if (rc) { |
eccb4422 SF |
4354 | trace_smb3_write_err(0 /* no xid */, req->PersistentFileId, |
4355 | tcon->tid, tcon->ses->Suid, wdata->offset, | |
4356 | wdata->bytes, rc); | |
4a5c80d7 | 4357 | kref_put(&wdata->refcount, release); |
e5d04887 | 4358 | cifs_stats_fail_inc(tcon, SMB2_WRITE_HE); |
7d42e72f | 4359 | } |
33319141 | 4360 | |
33319141 PS |
4361 | async_writev_out: |
4362 | cifs_small_buf_release(req); | |
33319141 PS |
4363 | return rc; |
4364 | } | |
009d3443 PS |
4365 | |
4366 | /* | |
4367 | * SMB2_write function gets iov pointer to kvec array with n_vec as a length. | |
4368 | * The length field from io_parms must be at least 1 and indicates a number of | |
4369 | * elements with data to write that begins with position 1 in iov array. All | |
4370 | * data length is specified by count. | |
4371 | */ | |
4372 | int | |
4373 | SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, | |
4374 | unsigned int *nbytes, struct kvec *iov, int n_vec) | |
4375 | { | |
40eff45b | 4376 | struct smb_rqst rqst; |
009d3443 PS |
4377 | int rc = 0; |
4378 | struct smb2_write_req *req = NULL; | |
4379 | struct smb2_write_rsp *rsp = NULL; | |
4380 | int resp_buftype; | |
da502f7d | 4381 | struct kvec rsp_iov; |
7fb8986e | 4382 | int flags = 0; |
f5688a6d | 4383 | unsigned int total_len; |
352d96f3 | 4384 | struct TCP_Server_Info *server; |
da502f7d | 4385 | |
009d3443 PS |
4386 | *nbytes = 0; |
4387 | ||
4388 | if (n_vec < 1) | |
4389 | return rc; | |
4390 | ||
352d96f3 AA |
4391 | if (!io_parms->server) |
4392 | io_parms->server = cifs_pick_channel(io_parms->tcon->ses); | |
4393 | server = io_parms->server; | |
4394 | if (server == NULL) | |
4395 | return -ECONNABORTED; | |
4396 | ||
4397 | rc = smb2_plain_req_init(SMB2_WRITE, io_parms->tcon, server, | |
4398 | (void **) &req, &total_len); | |
009d3443 PS |
4399 | if (rc) |
4400 | return rc; | |
4401 | ||
5a77e75f | 4402 | if (smb3_encryption_required(io_parms->tcon)) |
7fb8986e PS |
4403 | flags |= CIFS_TRANSFORM_REQ; |
4404 | ||
f5688a6d | 4405 | req->sync_hdr.ProcessId = cpu_to_le32(io_parms->pid); |
009d3443 PS |
4406 | |
4407 | req->PersistentFileId = io_parms->persistent_fid; | |
4408 | req->VolatileFileId = io_parms->volatile_fid; | |
4409 | req->WriteChannelInfoOffset = 0; | |
4410 | req->WriteChannelInfoLength = 0; | |
4411 | req->Channel = 0; | |
4412 | req->Length = cpu_to_le32(io_parms->length); | |
4413 | req->Offset = cpu_to_le64(io_parms->offset); | |
009d3443 | 4414 | req->DataOffset = cpu_to_le16( |
f5688a6d | 4415 | offsetof(struct smb2_write_req, Buffer)); |
009d3443 PS |
4416 | req->RemainingBytes = 0; |
4417 | ||
d323c246 SF |
4418 | trace_smb3_write_enter(xid, io_parms->persistent_fid, |
4419 | io_parms->tcon->tid, io_parms->tcon->ses->Suid, | |
4420 | io_parms->offset, io_parms->length); | |
4421 | ||
009d3443 | 4422 | iov[0].iov_base = (char *)req; |
f5688a6d RS |
4423 | /* 1 for Buffer */ |
4424 | iov[0].iov_len = total_len - 1; | |
009d3443 | 4425 | |
40eff45b RS |
4426 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
4427 | rqst.rq_iov = iov; | |
4428 | rqst.rq_nvec = n_vec + 1; | |
4429 | ||
352d96f3 AA |
4430 | rc = cifs_send_recv(xid, io_parms->tcon->ses, server, |
4431 | &rqst, | |
f5688a6d | 4432 | &resp_buftype, flags, &rsp_iov); |
da502f7d | 4433 | rsp = (struct smb2_write_rsp *)rsp_iov.iov_base; |
009d3443 PS |
4434 | |
4435 | if (rc) { | |
eccb4422 SF |
4436 | trace_smb3_write_err(xid, req->PersistentFileId, |
4437 | io_parms->tcon->tid, | |
4438 | io_parms->tcon->ses->Suid, | |
4439 | io_parms->offset, io_parms->length, rc); | |
009d3443 | 4440 | cifs_stats_fail_inc(io_parms->tcon, SMB2_WRITE_HE); |
f96637be | 4441 | cifs_dbg(VFS, "Send error in write = %d\n", rc); |
eccb4422 | 4442 | } else { |
009d3443 | 4443 | *nbytes = le32_to_cpu(rsp->DataLength); |
eccb4422 SF |
4444 | trace_smb3_write_done(xid, req->PersistentFileId, |
4445 | io_parms->tcon->tid, | |
4446 | io_parms->tcon->ses->Suid, | |
4447 | io_parms->offset, *nbytes); | |
4448 | } | |
e5d04887 | 4449 | |
6a3eb336 | 4450 | cifs_small_buf_release(req); |
e5d04887 | 4451 | free_rsp_buf(resp_buftype, rsp); |
009d3443 PS |
4452 | return rc; |
4453 | } | |
35143eb5 | 4454 | |
69dda305 | 4455 | int posix_info_sid_size(const void *beg, const void *end) |
349e13ad AA |
4456 | { |
4457 | size_t subauth; | |
4458 | int total; | |
4459 | ||
4460 | if (beg + 1 > end) | |
4461 | return -1; | |
4462 | ||
4463 | subauth = *(u8 *)(beg+1); | |
4464 | if (subauth < 1 || subauth > 15) | |
4465 | return -1; | |
4466 | ||
4467 | total = 1 + 1 + 6 + 4*subauth; | |
4468 | if (beg + total > end) | |
4469 | return -1; | |
4470 | ||
4471 | return total; | |
4472 | } | |
4473 | ||
4474 | int posix_info_parse(const void *beg, const void *end, | |
4475 | struct smb2_posix_info_parsed *out) | |
4476 | ||
4477 | { | |
4478 | int total_len = 0; | |
4479 | int sid_len; | |
4480 | int name_len; | |
4481 | const void *owner_sid; | |
4482 | const void *group_sid; | |
4483 | const void *name; | |
4484 | ||
4485 | /* if no end bound given, assume payload to be correct */ | |
4486 | if (!end) { | |
4487 | const struct smb2_posix_info *p = beg; | |
4488 | ||
4489 | end = beg + le32_to_cpu(p->NextEntryOffset); | |
4490 | /* last element will have a 0 offset, pick a sensible bound */ | |
4491 | if (end == beg) | |
4492 | end += 0xFFFF; | |
4493 | } | |
4494 | ||
4495 | /* check base buf */ | |
4496 | if (beg + sizeof(struct smb2_posix_info) > end) | |
4497 | return -1; | |
4498 | total_len = sizeof(struct smb2_posix_info); | |
4499 | ||
4500 | /* check owner sid */ | |
4501 | owner_sid = beg + total_len; | |
4502 | sid_len = posix_info_sid_size(owner_sid, end); | |
4503 | if (sid_len < 0) | |
4504 | return -1; | |
4505 | total_len += sid_len; | |
4506 | ||
4507 | /* check group sid */ | |
4508 | group_sid = beg + total_len; | |
4509 | sid_len = posix_info_sid_size(group_sid, end); | |
4510 | if (sid_len < 0) | |
4511 | return -1; | |
4512 | total_len += sid_len; | |
4513 | ||
4514 | /* check name len */ | |
4515 | if (beg + total_len + 4 > end) | |
4516 | return -1; | |
4517 | name_len = le32_to_cpu(*(__le32 *)(beg + total_len)); | |
4518 | if (name_len < 1 || name_len > 0xFFFF) | |
4519 | return -1; | |
4520 | total_len += 4; | |
4521 | ||
4522 | /* check name */ | |
4523 | name = beg + total_len; | |
4524 | if (name + name_len > end) | |
4525 | return -1; | |
4526 | total_len += name_len; | |
4527 | ||
4528 | if (out) { | |
4529 | out->base = beg; | |
4530 | out->size = total_len; | |
4531 | out->name_len = name_len; | |
4532 | out->name = name; | |
4533 | memcpy(&out->owner, owner_sid, | |
4534 | posix_info_sid_size(owner_sid, end)); | |
4535 | memcpy(&out->group, group_sid, | |
4536 | posix_info_sid_size(group_sid, end)); | |
4537 | } | |
4538 | return total_len; | |
4539 | } | |
4540 | ||
4541 | static int posix_info_extra_size(const void *beg, const void *end) | |
4542 | { | |
4543 | int len = posix_info_parse(beg, end, NULL); | |
4544 | ||
4545 | if (len < 0) | |
4546 | return -1; | |
4547 | return len - sizeof(struct smb2_posix_info); | |
4548 | } | |
4549 | ||
d324f08d | 4550 | static unsigned int |
3d519bd1 AA |
4551 | num_entries(int infotype, char *bufstart, char *end_of_buf, char **lastentry, |
4552 | size_t size) | |
d324f08d PS |
4553 | { |
4554 | int len; | |
4555 | unsigned int entrycount = 0; | |
4556 | unsigned int next_offset = 0; | |
56446f21 DC |
4557 | char *entryptr; |
4558 | FILE_DIRECTORY_INFO *dir_info; | |
d324f08d PS |
4559 | |
4560 | if (bufstart == NULL) | |
4561 | return 0; | |
4562 | ||
56446f21 | 4563 | entryptr = bufstart; |
d324f08d PS |
4564 | |
4565 | while (1) { | |
56446f21 DC |
4566 | if (entryptr + next_offset < entryptr || |
4567 | entryptr + next_offset > end_of_buf || | |
4568 | entryptr + next_offset + size > end_of_buf) { | |
f96637be | 4569 | cifs_dbg(VFS, "malformed search entry would overflow\n"); |
d324f08d PS |
4570 | break; |
4571 | } | |
4572 | ||
56446f21 DC |
4573 | entryptr = entryptr + next_offset; |
4574 | dir_info = (FILE_DIRECTORY_INFO *)entryptr; | |
4575 | ||
3d519bd1 AA |
4576 | if (infotype == SMB_FIND_FILE_POSIX_INFO) |
4577 | len = posix_info_extra_size(entryptr, end_of_buf); | |
4578 | else | |
4579 | len = le32_to_cpu(dir_info->FileNameLength); | |
4580 | ||
4581 | if (len < 0 || | |
4582 | entryptr + len < entryptr || | |
56446f21 DC |
4583 | entryptr + len > end_of_buf || |
4584 | entryptr + len + size > end_of_buf) { | |
f96637be JP |
4585 | cifs_dbg(VFS, "directory entry name would overflow frame end of buf %p\n", |
4586 | end_of_buf); | |
d324f08d PS |
4587 | break; |
4588 | } | |
4589 | ||
56446f21 | 4590 | *lastentry = entryptr; |
d324f08d PS |
4591 | entrycount++; |
4592 | ||
56446f21 | 4593 | next_offset = le32_to_cpu(dir_info->NextEntryOffset); |
d324f08d PS |
4594 | if (!next_offset) |
4595 | break; | |
4596 | } | |
4597 | ||
4598 | return entrycount; | |
4599 | } | |
4600 | ||
4601 | /* | |
4602 | * Readdir/FindFirst | |
4603 | */ | |
0a17799c | 4604 | int SMB2_query_directory_init(const unsigned int xid, |
352d96f3 AA |
4605 | struct cifs_tcon *tcon, |
4606 | struct TCP_Server_Info *server, | |
4607 | struct smb_rqst *rqst, | |
0a17799c RS |
4608 | u64 persistent_fid, u64 volatile_fid, |
4609 | int index, int info_level) | |
d324f08d PS |
4610 | { |
4611 | struct smb2_query_directory_req *req; | |
d324f08d | 4612 | unsigned char *bufptr; |
d324f08d | 4613 | __le16 asteriks = cpu_to_le16('*'); |
0a17799c RS |
4614 | unsigned int output_size = CIFSMaxBufSize - |
4615 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
4616 | MAX_SMB2_CLOSE_RESPONSE_SIZE; | |
7c00c3a6 | 4617 | unsigned int total_len; |
0a17799c RS |
4618 | struct kvec *iov = rqst->rq_iov; |
4619 | int len, rc; | |
d324f08d | 4620 | |
352d96f3 AA |
4621 | rc = smb2_plain_req_init(SMB2_QUERY_DIRECTORY, tcon, server, |
4622 | (void **) &req, &total_len); | |
d324f08d PS |
4623 | if (rc) |
4624 | return rc; | |
4625 | ||
0a17799c | 4626 | switch (info_level) { |
d324f08d PS |
4627 | case SMB_FIND_FILE_DIRECTORY_INFO: |
4628 | req->FileInformationClass = FILE_DIRECTORY_INFORMATION; | |
d324f08d PS |
4629 | break; |
4630 | case SMB_FIND_FILE_ID_FULL_DIR_INFO: | |
4631 | req->FileInformationClass = FILEID_FULL_DIRECTORY_INFORMATION; | |
d324f08d | 4632 | break; |
3d519bd1 AA |
4633 | case SMB_FIND_FILE_POSIX_INFO: |
4634 | req->FileInformationClass = SMB_FIND_FILE_POSIX_INFO; | |
4635 | break; | |
d324f08d | 4636 | default: |
3175eb9b | 4637 | cifs_tcon_dbg(VFS, "info level %u isn't supported\n", |
0a17799c RS |
4638 | info_level); |
4639 | return -EINVAL; | |
d324f08d PS |
4640 | } |
4641 | ||
4642 | req->FileIndex = cpu_to_le32(index); | |
4643 | req->PersistentFileId = persistent_fid; | |
4644 | req->VolatileFileId = volatile_fid; | |
4645 | ||
4646 | len = 0x2; | |
4647 | bufptr = req->Buffer; | |
4648 | memcpy(bufptr, &asteriks, len); | |
4649 | ||
4650 | req->FileNameOffset = | |
7c00c3a6 | 4651 | cpu_to_le16(sizeof(struct smb2_query_directory_req) - 1); |
d324f08d PS |
4652 | req->FileNameLength = cpu_to_le16(len); |
4653 | /* | |
4654 | * BB could be 30 bytes or so longer if we used SMB2 specific | |
4655 | * buffer lengths, but this is safe and close enough. | |
4656 | */ | |
4657 | output_size = min_t(unsigned int, output_size, server->maxBuf); | |
4658 | output_size = min_t(unsigned int, output_size, 2 << 15); | |
4659 | req->OutputBufferLength = cpu_to_le32(output_size); | |
4660 | ||
4661 | iov[0].iov_base = (char *)req; | |
7c00c3a6 RS |
4662 | /* 1 for Buffer */ |
4663 | iov[0].iov_len = total_len - 1; | |
d324f08d PS |
4664 | |
4665 | iov[1].iov_base = (char *)(req->Buffer); | |
4666 | iov[1].iov_len = len; | |
4667 | ||
0a17799c RS |
4668 | trace_smb3_query_dir_enter(xid, persistent_fid, tcon->tid, |
4669 | tcon->ses->Suid, index, output_size); | |
4670 | ||
4671 | return 0; | |
4672 | } | |
4673 | ||
4674 | void SMB2_query_directory_free(struct smb_rqst *rqst) | |
4675 | { | |
4676 | if (rqst && rqst->rq_iov) { | |
4677 | cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */ | |
4678 | } | |
4679 | } | |
4680 | ||
af08f9e7 RS |
4681 | int |
4682 | smb2_parse_query_directory(struct cifs_tcon *tcon, | |
4683 | struct kvec *rsp_iov, | |
4684 | int resp_buftype, | |
4685 | struct cifs_search_info *srch_inf) | |
4686 | { | |
4687 | struct smb2_query_directory_rsp *rsp; | |
4688 | size_t info_buf_size; | |
4689 | char *end_of_smb; | |
4690 | int rc; | |
4691 | ||
4692 | rsp = (struct smb2_query_directory_rsp *)rsp_iov->iov_base; | |
4693 | ||
4694 | switch (srch_inf->info_level) { | |
4695 | case SMB_FIND_FILE_DIRECTORY_INFO: | |
4696 | info_buf_size = sizeof(FILE_DIRECTORY_INFO) - 1; | |
4697 | break; | |
4698 | case SMB_FIND_FILE_ID_FULL_DIR_INFO: | |
4699 | info_buf_size = sizeof(SEARCH_ID_FULL_DIR_INFO) - 1; | |
4700 | break; | |
3d519bd1 AA |
4701 | case SMB_FIND_FILE_POSIX_INFO: |
4702 | /* note that posix payload are variable size */ | |
4703 | info_buf_size = sizeof(struct smb2_posix_info); | |
4704 | break; | |
af08f9e7 RS |
4705 | default: |
4706 | cifs_tcon_dbg(VFS, "info level %u isn't supported\n", | |
4707 | srch_inf->info_level); | |
4708 | return -EINVAL; | |
4709 | } | |
4710 | ||
4711 | rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), | |
4712 | le32_to_cpu(rsp->OutputBufferLength), rsp_iov, | |
4713 | info_buf_size); | |
3d519bd1 AA |
4714 | if (rc) { |
4715 | cifs_tcon_dbg(VFS, "bad info payload"); | |
af08f9e7 | 4716 | return rc; |
3d519bd1 | 4717 | } |
af08f9e7 RS |
4718 | |
4719 | srch_inf->unicode = true; | |
4720 | ||
4721 | if (srch_inf->ntwrk_buf_start) { | |
4722 | if (srch_inf->smallBuf) | |
4723 | cifs_small_buf_release(srch_inf->ntwrk_buf_start); | |
4724 | else | |
4725 | cifs_buf_release(srch_inf->ntwrk_buf_start); | |
4726 | } | |
4727 | srch_inf->ntwrk_buf_start = (char *)rsp; | |
4728 | srch_inf->srch_entries_start = srch_inf->last_entry = | |
4729 | (char *)rsp + le16_to_cpu(rsp->OutputBufferOffset); | |
4730 | end_of_smb = rsp_iov->iov_len + (char *)rsp; | |
3d519bd1 AA |
4731 | |
4732 | srch_inf->entries_in_buffer = num_entries( | |
4733 | srch_inf->info_level, | |
4734 | srch_inf->srch_entries_start, | |
4735 | end_of_smb, | |
4736 | &srch_inf->last_entry, | |
4737 | info_buf_size); | |
4738 | ||
af08f9e7 RS |
4739 | srch_inf->index_of_last_entry += srch_inf->entries_in_buffer; |
4740 | cifs_dbg(FYI, "num entries %d last_index %lld srch start %p srch end %p\n", | |
4741 | srch_inf->entries_in_buffer, srch_inf->index_of_last_entry, | |
4742 | srch_inf->srch_entries_start, srch_inf->last_entry); | |
4743 | if (resp_buftype == CIFS_LARGE_BUFFER) | |
4744 | srch_inf->smallBuf = false; | |
4745 | else if (resp_buftype == CIFS_SMALL_BUFFER) | |
4746 | srch_inf->smallBuf = true; | |
4747 | else | |
a0a3036b | 4748 | cifs_tcon_dbg(VFS, "Invalid search buffer type\n"); |
af08f9e7 RS |
4749 | |
4750 | return 0; | |
4751 | } | |
4752 | ||
0a17799c RS |
4753 | int |
4754 | SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon, | |
4755 | u64 persistent_fid, u64 volatile_fid, int index, | |
4756 | struct cifs_search_info *srch_inf) | |
4757 | { | |
4758 | struct smb_rqst rqst; | |
4759 | struct kvec iov[SMB2_QUERY_DIRECTORY_IOV_SIZE]; | |
4760 | struct smb2_query_directory_rsp *rsp = NULL; | |
4761 | int resp_buftype = CIFS_NO_BUFFER; | |
4762 | struct kvec rsp_iov; | |
4763 | int rc = 0; | |
0a17799c | 4764 | struct cifs_ses *ses = tcon->ses; |
352d96f3 | 4765 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
0a17799c RS |
4766 | int flags = 0; |
4767 | ||
c4985c3d | 4768 | if (!ses || !(ses->server)) |
0a17799c RS |
4769 | return -EIO; |
4770 | ||
4771 | if (smb3_encryption_required(tcon)) | |
4772 | flags |= CIFS_TRANSFORM_REQ; | |
4773 | ||
40eff45b | 4774 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
0a17799c | 4775 | memset(&iov, 0, sizeof(iov)); |
40eff45b | 4776 | rqst.rq_iov = iov; |
0a17799c | 4777 | rqst.rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE; |
40eff45b | 4778 | |
352d96f3 AA |
4779 | rc = SMB2_query_directory_init(xid, tcon, server, |
4780 | &rqst, persistent_fid, | |
0a17799c RS |
4781 | volatile_fid, index, |
4782 | srch_inf->info_level); | |
4783 | if (rc) | |
4784 | goto qdir_exit; | |
d323c246 | 4785 | |
352d96f3 AA |
4786 | rc = cifs_send_recv(xid, ses, server, |
4787 | &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d | 4788 | rsp = (struct smb2_query_directory_rsp *)rsp_iov.iov_base; |
e5d04887 | 4789 | |
d324f08d | 4790 | if (rc) { |
31473fc4 | 4791 | if (rc == -ENODATA && |
49f466bd | 4792 | rsp->sync_hdr.Status == STATUS_NO_MORE_FILES) { |
adb3b4e9 SF |
4793 | trace_smb3_query_dir_done(xid, persistent_fid, |
4794 | tcon->tid, tcon->ses->Suid, index, 0); | |
52755808 PS |
4795 | srch_inf->endOfSearch = true; |
4796 | rc = 0; | |
adb3b4e9 SF |
4797 | } else { |
4798 | trace_smb3_query_dir_err(xid, persistent_fid, tcon->tid, | |
4799 | tcon->ses->Suid, index, 0, rc); | |
8e6e72ae | 4800 | cifs_stats_fail_inc(tcon, SMB2_QUERY_DIRECTORY_HE); |
adb3b4e9 | 4801 | } |
d324f08d PS |
4802 | goto qdir_exit; |
4803 | } | |
d324f08d | 4804 | |
af08f9e7 RS |
4805 | rc = smb2_parse_query_directory(tcon, &rsp_iov, resp_buftype, |
4806 | srch_inf); | |
adb3b4e9 SF |
4807 | if (rc) { |
4808 | trace_smb3_query_dir_err(xid, persistent_fid, tcon->tid, | |
4809 | tcon->ses->Suid, index, 0, rc); | |
d324f08d | 4810 | goto qdir_exit; |
adb3b4e9 | 4811 | } |
0a17799c RS |
4812 | resp_buftype = CIFS_NO_BUFFER; |
4813 | ||
adb3b4e9 SF |
4814 | trace_smb3_query_dir_done(xid, persistent_fid, tcon->tid, |
4815 | tcon->ses->Suid, index, srch_inf->entries_in_buffer); | |
d324f08d PS |
4816 | |
4817 | qdir_exit: | |
0a17799c | 4818 | SMB2_query_directory_free(&rqst); |
d324f08d PS |
4819 | free_rsp_buf(resp_buftype, rsp); |
4820 | return rc; | |
4821 | } | |
4822 | ||
ba8ca116 | 4823 | int |
352d96f3 AA |
4824 | SMB2_set_info_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server, |
4825 | struct smb_rqst *rqst, | |
4826 | u64 persistent_fid, u64 volatile_fid, u32 pid, | |
4827 | u8 info_class, u8 info_type, u32 additional_info, | |
4828 | void **data, unsigned int *size) | |
35143eb5 PS |
4829 | { |
4830 | struct smb2_set_info_req *req; | |
ba8ca116 RS |
4831 | struct kvec *iov = rqst->rq_iov; |
4832 | unsigned int i, total_len; | |
4833 | int rc; | |
35143eb5 | 4834 | |
352d96f3 AA |
4835 | rc = smb2_plain_req_init(SMB2_SET_INFO, tcon, server, |
4836 | (void **) &req, &total_len); | |
ba8ca116 | 4837 | if (rc) |
35143eb5 | 4838 | return rc; |
7fb8986e | 4839 | |
2fc803ef | 4840 | req->sync_hdr.ProcessId = cpu_to_le32(pid); |
dac95340 | 4841 | req->InfoType = info_type; |
35143eb5 PS |
4842 | req->FileInfoClass = info_class; |
4843 | req->PersistentFileId = persistent_fid; | |
4844 | req->VolatileFileId = volatile_fid; | |
dac95340 | 4845 | req->AdditionalInformation = cpu_to_le32(additional_info); |
35143eb5 | 4846 | |
35143eb5 | 4847 | req->BufferOffset = |
2fc803ef | 4848 | cpu_to_le16(sizeof(struct smb2_set_info_req) - 1); |
35143eb5 PS |
4849 | req->BufferLength = cpu_to_le32(*size); |
4850 | ||
35143eb5 | 4851 | memcpy(req->Buffer, *data, *size); |
2fc803ef | 4852 | total_len += *size; |
35143eb5 PS |
4853 | |
4854 | iov[0].iov_base = (char *)req; | |
2fc803ef RS |
4855 | /* 1 for Buffer */ |
4856 | iov[0].iov_len = total_len - 1; | |
35143eb5 | 4857 | |
ba8ca116 | 4858 | for (i = 1; i < rqst->rq_nvec; i++) { |
35143eb5 PS |
4859 | le32_add_cpu(&req->BufferLength, size[i]); |
4860 | iov[i].iov_base = (char *)data[i]; | |
4861 | iov[i].iov_len = size[i]; | |
4862 | } | |
4863 | ||
ba8ca116 RS |
4864 | return 0; |
4865 | } | |
4866 | ||
4867 | void | |
4868 | SMB2_set_info_free(struct smb_rqst *rqst) | |
4869 | { | |
32a1fb36 RS |
4870 | if (rqst && rqst->rq_iov) |
4871 | cifs_buf_release(rqst->rq_iov[0].iov_base); /* request */ | |
ba8ca116 RS |
4872 | } |
4873 | ||
4874 | static int | |
4875 | send_set_info(const unsigned int xid, struct cifs_tcon *tcon, | |
4876 | u64 persistent_fid, u64 volatile_fid, u32 pid, u8 info_class, | |
4877 | u8 info_type, u32 additional_info, unsigned int num, | |
4878 | void **data, unsigned int *size) | |
4879 | { | |
4880 | struct smb_rqst rqst; | |
4881 | struct smb2_set_info_rsp *rsp = NULL; | |
4882 | struct kvec *iov; | |
4883 | struct kvec rsp_iov; | |
4884 | int rc = 0; | |
4885 | int resp_buftype; | |
4886 | struct cifs_ses *ses = tcon->ses; | |
352d96f3 | 4887 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
ba8ca116 RS |
4888 | int flags = 0; |
4889 | ||
352d96f3 | 4890 | if (!ses || !server) |
ba8ca116 RS |
4891 | return -EIO; |
4892 | ||
4893 | if (!num) | |
4894 | return -EINVAL; | |
4895 | ||
4896 | if (smb3_encryption_required(tcon)) | |
4897 | flags |= CIFS_TRANSFORM_REQ; | |
4898 | ||
4899 | iov = kmalloc_array(num, sizeof(struct kvec), GFP_KERNEL); | |
4900 | if (!iov) | |
4901 | return -ENOMEM; | |
4902 | ||
40eff45b RS |
4903 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
4904 | rqst.rq_iov = iov; | |
4905 | rqst.rq_nvec = num; | |
4906 | ||
352d96f3 AA |
4907 | rc = SMB2_set_info_init(tcon, server, |
4908 | &rqst, persistent_fid, volatile_fid, pid, | |
ba8ca116 RS |
4909 | info_class, info_type, additional_info, |
4910 | data, size); | |
4911 | if (rc) { | |
4912 | kfree(iov); | |
4913 | return rc; | |
4914 | } | |
4915 | ||
4916 | ||
352d96f3 AA |
4917 | rc = cifs_send_recv(xid, ses, server, |
4918 | &rqst, &resp_buftype, flags, | |
2fc803ef | 4919 | &rsp_iov); |
ba8ca116 | 4920 | SMB2_set_info_free(&rqst); |
da502f7d | 4921 | rsp = (struct smb2_set_info_rsp *)rsp_iov.iov_base; |
35143eb5 | 4922 | |
eccb4422 | 4923 | if (rc != 0) { |
35143eb5 | 4924 | cifs_stats_fail_inc(tcon, SMB2_SET_INFO_HE); |
eccb4422 SF |
4925 | trace_smb3_set_info_err(xid, persistent_fid, tcon->tid, |
4926 | ses->Suid, info_class, (__u32)info_type, rc); | |
4927 | } | |
7d3fb24b | 4928 | |
35143eb5 PS |
4929 | free_rsp_buf(resp_buftype, rsp); |
4930 | kfree(iov); | |
4931 | return rc; | |
4932 | } | |
4933 | ||
c839ff24 PS |
4934 | int |
4935 | SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, | |
3764cbd1 | 4936 | u64 volatile_fid, u32 pid, __le64 *eof) |
c839ff24 PS |
4937 | { |
4938 | struct smb2_file_eof_info info; | |
4939 | void *data; | |
4940 | unsigned int size; | |
4941 | ||
4942 | info.EndOfFile = *eof; | |
4943 | ||
4944 | data = &info; | |
4945 | size = sizeof(struct smb2_file_eof_info); | |
4946 | ||
3764cbd1 | 4947 | return send_set_info(xid, tcon, persistent_fid, volatile_fid, |
dac95340 SP |
4948 | pid, FILE_END_OF_FILE_INFORMATION, SMB2_O_INFO_FILE, |
4949 | 0, 1, &data, &size); | |
c839ff24 | 4950 | } |
1feeaac7 | 4951 | |
dac95340 SP |
4952 | int |
4953 | SMB2_set_acl(const unsigned int xid, struct cifs_tcon *tcon, | |
4954 | u64 persistent_fid, u64 volatile_fid, | |
4955 | struct cifs_ntsd *pnntsd, int pacllen, int aclflag) | |
4956 | { | |
4957 | return send_set_info(xid, tcon, persistent_fid, volatile_fid, | |
4958 | current->tgid, 0, SMB2_O_INFO_SECURITY, aclflag, | |
4959 | 1, (void **)&pnntsd, &pacllen); | |
1feeaac7 | 4960 | } |
983c88a4 | 4961 | |
5517554e RS |
4962 | int |
4963 | SMB2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, | |
4964 | u64 persistent_fid, u64 volatile_fid, | |
4965 | struct smb2_file_full_ea_info *buf, int len) | |
4966 | { | |
4967 | return send_set_info(xid, tcon, persistent_fid, volatile_fid, | |
4968 | current->tgid, FILE_FULL_EA_INFORMATION, SMB2_O_INFO_FILE, | |
4969 | 0, 1, (void **)&buf, &len); | |
4970 | } | |
4971 | ||
983c88a4 PS |
4972 | int |
4973 | SMB2_oplock_break(const unsigned int xid, struct cifs_tcon *tcon, | |
4974 | const u64 persistent_fid, const u64 volatile_fid, | |
4975 | __u8 oplock_level) | |
4976 | { | |
40eff45b | 4977 | struct smb_rqst rqst; |
983c88a4 | 4978 | int rc; |
0d5a288d | 4979 | struct smb2_oplock_break *req = NULL; |
21ad9487 | 4980 | struct cifs_ses *ses = tcon->ses; |
352d96f3 | 4981 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
7fb8986e | 4982 | int flags = CIFS_OBREAK_OP; |
21ad9487 RS |
4983 | unsigned int total_len; |
4984 | struct kvec iov[1]; | |
4985 | struct kvec rsp_iov; | |
4986 | int resp_buf_type; | |
983c88a4 | 4987 | |
f96637be | 4988 | cifs_dbg(FYI, "SMB2_oplock_break\n"); |
352d96f3 AA |
4989 | rc = smb2_plain_req_init(SMB2_OPLOCK_BREAK, tcon, server, |
4990 | (void **) &req, &total_len); | |
983c88a4 PS |
4991 | if (rc) |
4992 | return rc; | |
4993 | ||
5a77e75f | 4994 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
4995 | flags |= CIFS_TRANSFORM_REQ; |
4996 | ||
983c88a4 PS |
4997 | req->VolatileFid = volatile_fid; |
4998 | req->PersistentFid = persistent_fid; | |
4999 | req->OplockLevel = oplock_level; | |
21ad9487 | 5000 | req->sync_hdr.CreditRequest = cpu_to_le16(1); |
983c88a4 | 5001 | |
392e1c5d | 5002 | flags |= CIFS_NO_RSP_BUF; |
21ad9487 RS |
5003 | |
5004 | iov[0].iov_base = (char *)req; | |
5005 | iov[0].iov_len = total_len; | |
5006 | ||
40eff45b RS |
5007 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
5008 | rqst.rq_iov = iov; | |
5009 | rqst.rq_nvec = 1; | |
5010 | ||
352d96f3 AA |
5011 | rc = cifs_send_recv(xid, ses, server, |
5012 | &rqst, &resp_buf_type, flags, &rsp_iov); | |
da502f7d | 5013 | cifs_small_buf_release(req); |
983c88a4 PS |
5014 | |
5015 | if (rc) { | |
5016 | cifs_stats_fail_inc(tcon, SMB2_OPLOCK_BREAK_HE); | |
f96637be | 5017 | cifs_dbg(FYI, "Send error in Oplock Break = %d\n", rc); |
983c88a4 PS |
5018 | } |
5019 | ||
5020 | return rc; | |
5021 | } | |
6fc05c25 | 5022 | |
730928c8 RS |
5023 | void |
5024 | smb2_copy_fs_info_to_kstatfs(struct smb2_fs_full_size_info *pfs_inf, | |
5025 | struct kstatfs *kst) | |
6fc05c25 PS |
5026 | { |
5027 | kst->f_bsize = le32_to_cpu(pfs_inf->BytesPerSector) * | |
5028 | le32_to_cpu(pfs_inf->SectorsPerAllocationUnit); | |
5029 | kst->f_blocks = le64_to_cpu(pfs_inf->TotalAllocationUnits); | |
42bec214 SP |
5030 | kst->f_bfree = kst->f_bavail = |
5031 | le64_to_cpu(pfs_inf->CallerAvailableAllocationUnits); | |
6fc05c25 PS |
5032 | return; |
5033 | } | |
5034 | ||
2d304217 SF |
5035 | static void |
5036 | copy_posix_fs_info_to_kstatfs(FILE_SYSTEM_POSIX_INFO *response_data, | |
5037 | struct kstatfs *kst) | |
5038 | { | |
5039 | kst->f_bsize = le32_to_cpu(response_data->BlockSize); | |
5040 | kst->f_blocks = le64_to_cpu(response_data->TotalBlocks); | |
5041 | kst->f_bfree = le64_to_cpu(response_data->BlocksAvail); | |
5042 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) | |
5043 | kst->f_bavail = kst->f_bfree; | |
5044 | else | |
5045 | kst->f_bavail = le64_to_cpu(response_data->UserBlocksAvail); | |
5046 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) | |
5047 | kst->f_files = le64_to_cpu(response_data->TotalFileNodes); | |
5048 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) | |
5049 | kst->f_ffree = le64_to_cpu(response_data->FreeFileNodes); | |
5050 | ||
5051 | return; | |
5052 | } | |
2d304217 | 5053 | |
6fc05c25 | 5054 | static int |
352d96f3 AA |
5055 | build_qfs_info_req(struct kvec *iov, struct cifs_tcon *tcon, |
5056 | struct TCP_Server_Info *server, | |
5057 | int level, int outbuf_len, u64 persistent_fid, | |
5058 | u64 volatile_fid) | |
6fc05c25 PS |
5059 | { |
5060 | int rc; | |
5061 | struct smb2_query_info_req *req; | |
b2fb7fec | 5062 | unsigned int total_len; |
6fc05c25 | 5063 | |
f96637be | 5064 | cifs_dbg(FYI, "Query FSInfo level %d\n", level); |
6fc05c25 | 5065 | |
352d96f3 | 5066 | if ((tcon->ses == NULL) || server == NULL) |
6fc05c25 PS |
5067 | return -EIO; |
5068 | ||
352d96f3 AA |
5069 | rc = smb2_plain_req_init(SMB2_QUERY_INFO, tcon, server, |
5070 | (void **) &req, &total_len); | |
6fc05c25 PS |
5071 | if (rc) |
5072 | return rc; | |
5073 | ||
5074 | req->InfoType = SMB2_O_INFO_FILESYSTEM; | |
5075 | req->FileInfoClass = level; | |
5076 | req->PersistentFileId = persistent_fid; | |
5077 | req->VolatileFileId = volatile_fid; | |
b2fb7fec | 5078 | /* 1 for pad */ |
6fc05c25 | 5079 | req->InputBufferOffset = |
b2fb7fec | 5080 | cpu_to_le16(sizeof(struct smb2_query_info_req) - 1); |
6fc05c25 | 5081 | req->OutputBufferLength = cpu_to_le32( |
1fc6ad2f | 5082 | outbuf_len + sizeof(struct smb2_query_info_rsp) - 1); |
6fc05c25 PS |
5083 | |
5084 | iov->iov_base = (char *)req; | |
b2fb7fec | 5085 | iov->iov_len = total_len; |
6fc05c25 PS |
5086 | return 0; |
5087 | } | |
5088 | ||
2d304217 SF |
5089 | int |
5090 | SMB311_posix_qfs_info(const unsigned int xid, struct cifs_tcon *tcon, | |
5091 | u64 persistent_fid, u64 volatile_fid, struct kstatfs *fsdata) | |
5092 | { | |
5093 | struct smb_rqst rqst; | |
5094 | struct smb2_query_info_rsp *rsp = NULL; | |
5095 | struct kvec iov; | |
5096 | struct kvec rsp_iov; | |
5097 | int rc = 0; | |
5098 | int resp_buftype; | |
5099 | struct cifs_ses *ses = tcon->ses; | |
352d96f3 | 5100 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
2d304217 SF |
5101 | FILE_SYSTEM_POSIX_INFO *info = NULL; |
5102 | int flags = 0; | |
5103 | ||
352d96f3 AA |
5104 | rc = build_qfs_info_req(&iov, tcon, server, |
5105 | FS_POSIX_INFORMATION, | |
2d304217 SF |
5106 | sizeof(FILE_SYSTEM_POSIX_INFO), |
5107 | persistent_fid, volatile_fid); | |
5108 | if (rc) | |
5109 | return rc; | |
5110 | ||
5111 | if (smb3_encryption_required(tcon)) | |
5112 | flags |= CIFS_TRANSFORM_REQ; | |
5113 | ||
5114 | memset(&rqst, 0, sizeof(struct smb_rqst)); | |
5115 | rqst.rq_iov = &iov; | |
5116 | rqst.rq_nvec = 1; | |
5117 | ||
352d96f3 AA |
5118 | rc = cifs_send_recv(xid, ses, server, |
5119 | &rqst, &resp_buftype, flags, &rsp_iov); | |
2d304217 SF |
5120 | cifs_small_buf_release(iov.iov_base); |
5121 | if (rc) { | |
5122 | cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); | |
5123 | goto posix_qfsinf_exit; | |
5124 | } | |
5125 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; | |
5126 | ||
5127 | info = (FILE_SYSTEM_POSIX_INFO *)( | |
5128 | le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp); | |
730928c8 RS |
5129 | rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), |
5130 | le32_to_cpu(rsp->OutputBufferLength), &rsp_iov, | |
5131 | sizeof(FILE_SYSTEM_POSIX_INFO)); | |
2d304217 SF |
5132 | if (!rc) |
5133 | copy_posix_fs_info_to_kstatfs(info, fsdata); | |
5134 | ||
5135 | posix_qfsinf_exit: | |
5136 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); | |
5137 | return rc; | |
5138 | } | |
2d304217 | 5139 | |
6fc05c25 PS |
5140 | int |
5141 | SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon, | |
5142 | u64 persistent_fid, u64 volatile_fid, struct kstatfs *fsdata) | |
5143 | { | |
40eff45b | 5144 | struct smb_rqst rqst; |
6fc05c25 PS |
5145 | struct smb2_query_info_rsp *rsp = NULL; |
5146 | struct kvec iov; | |
da502f7d | 5147 | struct kvec rsp_iov; |
6fc05c25 PS |
5148 | int rc = 0; |
5149 | int resp_buftype; | |
5150 | struct cifs_ses *ses = tcon->ses; | |
352d96f3 | 5151 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
6fc05c25 | 5152 | struct smb2_fs_full_size_info *info = NULL; |
7fb8986e | 5153 | int flags = 0; |
6fc05c25 | 5154 | |
352d96f3 AA |
5155 | rc = build_qfs_info_req(&iov, tcon, server, |
5156 | FS_FULL_SIZE_INFORMATION, | |
6fc05c25 PS |
5157 | sizeof(struct smb2_fs_full_size_info), |
5158 | persistent_fid, volatile_fid); | |
5159 | if (rc) | |
5160 | return rc; | |
5161 | ||
5a77e75f | 5162 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
5163 | flags |= CIFS_TRANSFORM_REQ; |
5164 | ||
40eff45b RS |
5165 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
5166 | rqst.rq_iov = &iov; | |
5167 | rqst.rq_nvec = 1; | |
5168 | ||
352d96f3 AA |
5169 | rc = cifs_send_recv(xid, ses, server, |
5170 | &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d | 5171 | cifs_small_buf_release(iov.iov_base); |
6fc05c25 PS |
5172 | if (rc) { |
5173 | cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); | |
34f62640 | 5174 | goto qfsinf_exit; |
6fc05c25 | 5175 | } |
da502f7d | 5176 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; |
6fc05c25 | 5177 | |
1fc6ad2f | 5178 | info = (struct smb2_fs_full_size_info *)( |
49f466bd | 5179 | le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp); |
730928c8 RS |
5180 | rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), |
5181 | le32_to_cpu(rsp->OutputBufferLength), &rsp_iov, | |
5182 | sizeof(struct smb2_fs_full_size_info)); | |
6fc05c25 | 5183 | if (!rc) |
730928c8 | 5184 | smb2_copy_fs_info_to_kstatfs(info, fsdata); |
6fc05c25 | 5185 | |
34f62640 | 5186 | qfsinf_exit: |
da502f7d | 5187 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); |
34f62640 SF |
5188 | return rc; |
5189 | } | |
5190 | ||
5191 | int | |
5192 | SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon, | |
2167114c | 5193 | u64 persistent_fid, u64 volatile_fid, int level) |
34f62640 | 5194 | { |
40eff45b | 5195 | struct smb_rqst rqst; |
34f62640 SF |
5196 | struct smb2_query_info_rsp *rsp = NULL; |
5197 | struct kvec iov; | |
da502f7d | 5198 | struct kvec rsp_iov; |
34f62640 | 5199 | int rc = 0; |
2167114c | 5200 | int resp_buftype, max_len, min_len; |
34f62640 | 5201 | struct cifs_ses *ses = tcon->ses; |
352d96f3 | 5202 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
34f62640 | 5203 | unsigned int rsp_len, offset; |
7fb8986e | 5204 | int flags = 0; |
34f62640 | 5205 | |
2167114c SF |
5206 | if (level == FS_DEVICE_INFORMATION) { |
5207 | max_len = sizeof(FILE_SYSTEM_DEVICE_INFO); | |
5208 | min_len = sizeof(FILE_SYSTEM_DEVICE_INFO); | |
5209 | } else if (level == FS_ATTRIBUTE_INFORMATION) { | |
5210 | max_len = sizeof(FILE_SYSTEM_ATTRIBUTE_INFO); | |
5211 | min_len = MIN_FS_ATTR_INFO_SIZE; | |
af6a12ea SF |
5212 | } else if (level == FS_SECTOR_SIZE_INFORMATION) { |
5213 | max_len = sizeof(struct smb3_fs_ss_info); | |
5214 | min_len = sizeof(struct smb3_fs_ss_info); | |
21ba3845 SF |
5215 | } else if (level == FS_VOLUME_INFORMATION) { |
5216 | max_len = sizeof(struct smb3_fs_vol_info) + MAX_VOL_LABEL_LEN; | |
5217 | min_len = sizeof(struct smb3_fs_vol_info); | |
2167114c | 5218 | } else { |
af6a12ea | 5219 | cifs_dbg(FYI, "Invalid qfsinfo level %d\n", level); |
2167114c SF |
5220 | return -EINVAL; |
5221 | } | |
5222 | ||
352d96f3 AA |
5223 | rc = build_qfs_info_req(&iov, tcon, server, |
5224 | level, max_len, | |
34f62640 SF |
5225 | persistent_fid, volatile_fid); |
5226 | if (rc) | |
5227 | return rc; | |
5228 | ||
5a77e75f | 5229 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
5230 | flags |= CIFS_TRANSFORM_REQ; |
5231 | ||
40eff45b RS |
5232 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
5233 | rqst.rq_iov = &iov; | |
5234 | rqst.rq_nvec = 1; | |
5235 | ||
352d96f3 AA |
5236 | rc = cifs_send_recv(xid, ses, server, |
5237 | &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d | 5238 | cifs_small_buf_release(iov.iov_base); |
34f62640 SF |
5239 | if (rc) { |
5240 | cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); | |
5241 | goto qfsattr_exit; | |
5242 | } | |
da502f7d | 5243 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; |
34f62640 SF |
5244 | |
5245 | rsp_len = le32_to_cpu(rsp->OutputBufferLength); | |
5246 | offset = le16_to_cpu(rsp->OutputBufferOffset); | |
730928c8 | 5247 | rc = smb2_validate_iov(offset, rsp_len, &rsp_iov, min_len); |
2167114c SF |
5248 | if (rc) |
5249 | goto qfsattr_exit; | |
5250 | ||
5251 | if (level == FS_ATTRIBUTE_INFORMATION) | |
1fc6ad2f | 5252 | memcpy(&tcon->fsAttrInfo, offset |
49f466bd | 5253 | + (char *)rsp, min_t(unsigned int, |
2167114c SF |
5254 | rsp_len, max_len)); |
5255 | else if (level == FS_DEVICE_INFORMATION) | |
1fc6ad2f | 5256 | memcpy(&tcon->fsDevInfo, offset |
49f466bd | 5257 | + (char *)rsp, sizeof(FILE_SYSTEM_DEVICE_INFO)); |
af6a12ea SF |
5258 | else if (level == FS_SECTOR_SIZE_INFORMATION) { |
5259 | struct smb3_fs_ss_info *ss_info = (struct smb3_fs_ss_info *) | |
1fc6ad2f | 5260 | (offset + (char *)rsp); |
af6a12ea SF |
5261 | tcon->ss_flags = le32_to_cpu(ss_info->Flags); |
5262 | tcon->perf_sector_size = | |
5263 | le32_to_cpu(ss_info->PhysicalBytesPerSectorForPerf); | |
21ba3845 SF |
5264 | } else if (level == FS_VOLUME_INFORMATION) { |
5265 | struct smb3_fs_vol_info *vol_info = (struct smb3_fs_vol_info *) | |
5266 | (offset + (char *)rsp); | |
5267 | tcon->vol_serial_number = vol_info->VolumeSerialNumber; | |
5268 | tcon->vol_create_time = vol_info->VolumeCreationTime; | |
af6a12ea | 5269 | } |
34f62640 SF |
5270 | |
5271 | qfsattr_exit: | |
da502f7d | 5272 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); |
6fc05c25 PS |
5273 | return rc; |
5274 | } | |
f7ba7fe6 PS |
5275 | |
5276 | int | |
5277 | smb2_lockv(const unsigned int xid, struct cifs_tcon *tcon, | |
5278 | const __u64 persist_fid, const __u64 volatile_fid, const __u32 pid, | |
5279 | const __u32 num_lock, struct smb2_lock_element *buf) | |
5280 | { | |
40eff45b | 5281 | struct smb_rqst rqst; |
f7ba7fe6 PS |
5282 | int rc = 0; |
5283 | struct smb2_lock_req *req = NULL; | |
5284 | struct kvec iov[2]; | |
da502f7d | 5285 | struct kvec rsp_iov; |
f7ba7fe6 PS |
5286 | int resp_buf_type; |
5287 | unsigned int count; | |
392e1c5d | 5288 | int flags = CIFS_NO_RSP_BUF; |
ced93679 | 5289 | unsigned int total_len; |
352d96f3 | 5290 | struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); |
f7ba7fe6 | 5291 | |
f96637be | 5292 | cifs_dbg(FYI, "smb2_lockv num lock %d\n", num_lock); |
f7ba7fe6 | 5293 | |
352d96f3 AA |
5294 | rc = smb2_plain_req_init(SMB2_LOCK, tcon, server, |
5295 | (void **) &req, &total_len); | |
f7ba7fe6 PS |
5296 | if (rc) |
5297 | return rc; | |
5298 | ||
5a77e75f | 5299 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
5300 | flags |= CIFS_TRANSFORM_REQ; |
5301 | ||
ced93679 | 5302 | req->sync_hdr.ProcessId = cpu_to_le32(pid); |
f7ba7fe6 PS |
5303 | req->LockCount = cpu_to_le16(num_lock); |
5304 | ||
5305 | req->PersistentFileId = persist_fid; | |
5306 | req->VolatileFileId = volatile_fid; | |
5307 | ||
5308 | count = num_lock * sizeof(struct smb2_lock_element); | |
f7ba7fe6 PS |
5309 | |
5310 | iov[0].iov_base = (char *)req; | |
ced93679 | 5311 | iov[0].iov_len = total_len - sizeof(struct smb2_lock_element); |
f7ba7fe6 PS |
5312 | iov[1].iov_base = (char *)buf; |
5313 | iov[1].iov_len = count; | |
5314 | ||
5315 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); | |
40eff45b RS |
5316 | |
5317 | memset(&rqst, 0, sizeof(struct smb_rqst)); | |
5318 | rqst.rq_iov = iov; | |
5319 | rqst.rq_nvec = 2; | |
5320 | ||
352d96f3 AA |
5321 | rc = cifs_send_recv(xid, tcon->ses, server, |
5322 | &rqst, &resp_buf_type, flags, | |
ced93679 | 5323 | &rsp_iov); |
da502f7d | 5324 | cifs_small_buf_release(req); |
f7ba7fe6 | 5325 | if (rc) { |
f96637be | 5326 | cifs_dbg(FYI, "Send error in smb2_lockv = %d\n", rc); |
f7ba7fe6 | 5327 | cifs_stats_fail_inc(tcon, SMB2_LOCK_HE); |
eccb4422 SF |
5328 | trace_smb3_lock_err(xid, persist_fid, tcon->tid, |
5329 | tcon->ses->Suid, rc); | |
f7ba7fe6 PS |
5330 | } |
5331 | ||
5332 | return rc; | |
5333 | } | |
5334 | ||
5335 | int | |
5336 | SMB2_lock(const unsigned int xid, struct cifs_tcon *tcon, | |
5337 | const __u64 persist_fid, const __u64 volatile_fid, const __u32 pid, | |
5338 | const __u64 length, const __u64 offset, const __u32 lock_flags, | |
5339 | const bool wait) | |
5340 | { | |
5341 | struct smb2_lock_element lock; | |
5342 | ||
5343 | lock.Offset = cpu_to_le64(offset); | |
5344 | lock.Length = cpu_to_le64(length); | |
5345 | lock.Flags = cpu_to_le32(lock_flags); | |
5346 | if (!wait && lock_flags != SMB2_LOCKFLAG_UNLOCK) | |
5347 | lock.Flags |= cpu_to_le32(SMB2_LOCKFLAG_FAIL_IMMEDIATELY); | |
5348 | ||
5349 | return smb2_lockv(xid, tcon, persist_fid, volatile_fid, pid, 1, &lock); | |
5350 | } | |
0822f514 PS |
5351 | |
5352 | int | |
5353 | SMB2_lease_break(const unsigned int xid, struct cifs_tcon *tcon, | |
5354 | __u8 *lease_key, const __le32 lease_state) | |
5355 | { | |
40eff45b | 5356 | struct smb_rqst rqst; |
0822f514 PS |
5357 | int rc; |
5358 | struct smb2_lease_ack *req = NULL; | |
8eb7998e | 5359 | struct cifs_ses *ses = tcon->ses; |
7fb8986e | 5360 | int flags = CIFS_OBREAK_OP; |
8eb7998e RS |
5361 | unsigned int total_len; |
5362 | struct kvec iov[1]; | |
5363 | struct kvec rsp_iov; | |
5364 | int resp_buf_type; | |
179e44d4 SF |
5365 | __u64 *please_key_high; |
5366 | __u64 *please_key_low; | |
352d96f3 | 5367 | struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); |
0822f514 | 5368 | |
f96637be | 5369 | cifs_dbg(FYI, "SMB2_lease_break\n"); |
352d96f3 AA |
5370 | rc = smb2_plain_req_init(SMB2_OPLOCK_BREAK, tcon, server, |
5371 | (void **) &req, &total_len); | |
0822f514 PS |
5372 | if (rc) |
5373 | return rc; | |
5374 | ||
5a77e75f | 5375 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
5376 | flags |= CIFS_TRANSFORM_REQ; |
5377 | ||
8eb7998e | 5378 | req->sync_hdr.CreditRequest = cpu_to_le16(1); |
0822f514 | 5379 | req->StructureSize = cpu_to_le16(36); |
8eb7998e | 5380 | total_len += 12; |
0822f514 PS |
5381 | |
5382 | memcpy(req->LeaseKey, lease_key, 16); | |
5383 | req->LeaseState = lease_state; | |
5384 | ||
392e1c5d | 5385 | flags |= CIFS_NO_RSP_BUF; |
8eb7998e RS |
5386 | |
5387 | iov[0].iov_base = (char *)req; | |
5388 | iov[0].iov_len = total_len; | |
5389 | ||
40eff45b RS |
5390 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
5391 | rqst.rq_iov = iov; | |
5392 | rqst.rq_nvec = 1; | |
5393 | ||
352d96f3 AA |
5394 | rc = cifs_send_recv(xid, ses, server, |
5395 | &rqst, &resp_buf_type, flags, &rsp_iov); | |
da502f7d | 5396 | cifs_small_buf_release(req); |
0822f514 | 5397 | |
d339adc1 AA |
5398 | please_key_low = (__u64 *)lease_key; |
5399 | please_key_high = (__u64 *)(lease_key+8); | |
0822f514 PS |
5400 | if (rc) { |
5401 | cifs_stats_fail_inc(tcon, SMB2_OPLOCK_BREAK_HE); | |
179e44d4 SF |
5402 | trace_smb3_lease_err(le32_to_cpu(lease_state), tcon->tid, |
5403 | ses->Suid, *please_key_low, *please_key_high, rc); | |
f96637be | 5404 | cifs_dbg(FYI, "Send error in Lease Break = %d\n", rc); |
179e44d4 SF |
5405 | } else |
5406 | trace_smb3_lease_done(le32_to_cpu(lease_state), tcon->tid, | |
5407 | ses->Suid, *please_key_low, *please_key_high); | |
0822f514 PS |
5408 | |
5409 | return rc; | |
5410 | } |