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 | { |
ae6f8dd4 PS |
88 | if (!tcon) |
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, |
ec2e4523 PS |
101 | const struct cifs_tcon *tcon) |
102 | { | |
31473fc4 PS |
103 | shdr->ProtocolId = SMB2_PROTO_NUMBER; |
104 | shdr->StructureSize = cpu_to_le16(64); | |
105 | shdr->Command = smb2_cmd; | |
7d414f39 RL |
106 | if (tcon && tcon->ses && tcon->ses->server) { |
107 | struct TCP_Server_Info *server = tcon->ses->server; | |
108 | ||
109 | spin_lock(&server->req_lock); | |
69dc4b18 | 110 | /* Request up to 10 credits but don't go over the limit. */ |
141891f4 | 111 | if (server->credits >= server->max_credits) |
31473fc4 | 112 | shdr->CreditRequest = cpu_to_le16(0); |
7d414f39 | 113 | else |
31473fc4 | 114 | shdr->CreditRequest = cpu_to_le16( |
141891f4 | 115 | min_t(int, server->max_credits - |
69dc4b18 | 116 | server->credits, 10)); |
7d414f39 RL |
117 | spin_unlock(&server->req_lock); |
118 | } else { | |
31473fc4 | 119 | shdr->CreditRequest = cpu_to_le16(2); |
7d414f39 | 120 | } |
31473fc4 | 121 | shdr->ProcessId = cpu_to_le32((__u16)current->tgid); |
ec2e4523 PS |
122 | |
123 | if (!tcon) | |
124 | goto out; | |
125 | ||
2b80d049 SF |
126 | /* GLOBAL_CAP_LARGE_MTU will only be set if dialect > SMB2.02 */ |
127 | /* See sections 2.2.4 and 3.2.4.1.5 of MS-SMB2 */ | |
1dc92c45 | 128 | if ((tcon->ses) && (tcon->ses->server) && |
84ceeb96 | 129 | (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) |
31473fc4 | 130 | shdr->CreditCharge = cpu_to_le16(1); |
2b80d049 SF |
131 | /* else CreditCharge MBZ */ |
132 | ||
31473fc4 | 133 | shdr->TreeId = tcon->tid; |
ec2e4523 PS |
134 | /* Uid is not converted */ |
135 | if (tcon->ses) | |
31473fc4 | 136 | shdr->SessionId = tcon->ses->Suid; |
f87ab88b SF |
137 | |
138 | /* | |
139 | * If we would set SMB2_FLAGS_DFS_OPERATIONS on open we also would have | |
140 | * to pass the path on the Open SMB prefixed by \\server\share. | |
141 | * Not sure when we would need to do the augmented path (if ever) and | |
142 | * setting this flag breaks the SMB2 open operation since it is | |
143 | * illegal to send an empty path name (without \\server\share prefix) | |
144 | * when the DFS flag is set in the SMB open header. We could | |
145 | * consider setting the flag on all operations other than open | |
146 | * but it is safer to net set it for now. | |
147 | */ | |
148 | /* if (tcon->share_flags & SHI1005_FLAGS_DFS) | |
31473fc4 | 149 | shdr->Flags |= SMB2_FLAGS_DFS_OPERATIONS; */ |
f87ab88b | 150 | |
7fb8986e | 151 | if (tcon->ses && tcon->ses->server && tcon->ses->server->sign && |
5a77e75f | 152 | !smb3_encryption_required(tcon)) |
31473fc4 | 153 | shdr->Flags |= SMB2_FLAGS_SIGNED; |
ec2e4523 | 154 | out: |
ec2e4523 PS |
155 | return; |
156 | } | |
157 | ||
a3a53b76 PA |
158 | #ifdef CONFIG_CIFS_DFS_UPCALL |
159 | static int __smb2_reconnect(const struct nls_table *nlsc, | |
160 | struct cifs_tcon *tcon) | |
161 | { | |
162 | int rc; | |
163 | struct dfs_cache_tgt_list tl; | |
164 | struct dfs_cache_tgt_iterator *it = NULL; | |
15bc77f9 | 165 | char *tree; |
a3a53b76 PA |
166 | const char *tcp_host; |
167 | size_t tcp_host_len; | |
168 | const char *dfs_host; | |
169 | size_t dfs_host_len; | |
170 | ||
15bc77f9 AA |
171 | tree = kzalloc(MAX_TREE_SIZE, GFP_KERNEL); |
172 | if (!tree) | |
173 | return -ENOMEM; | |
174 | ||
a3a53b76 | 175 | if (tcon->ipc) { |
74ea5f98 RS |
176 | scnprintf(tree, MAX_TREE_SIZE, "\\\\%s\\IPC$", |
177 | tcon->ses->server->hostname); | |
15bc77f9 AA |
178 | rc = SMB2_tcon(0, tcon->ses, tree, tcon, nlsc); |
179 | goto out; | |
a3a53b76 PA |
180 | } |
181 | ||
15bc77f9 AA |
182 | if (!tcon->dfs_path) { |
183 | rc = SMB2_tcon(0, tcon->ses, tcon->treeName, tcon, nlsc); | |
184 | goto out; | |
185 | } | |
a3a53b76 PA |
186 | |
187 | rc = dfs_cache_noreq_find(tcon->dfs_path + 1, NULL, &tl); | |
188 | if (rc) | |
15bc77f9 | 189 | goto out; |
a3a53b76 PA |
190 | |
191 | extract_unc_hostname(tcon->ses->server->hostname, &tcp_host, | |
192 | &tcp_host_len); | |
193 | ||
194 | for (it = dfs_cache_get_tgt_iterator(&tl); it; | |
195 | it = dfs_cache_get_next_tgt(&tl, it)) { | |
bacd704a PAS |
196 | const char *share, *prefix; |
197 | size_t share_len, prefix_len; | |
198 | ||
199 | rc = dfs_cache_get_tgt_share(it, &share, &share_len, &prefix, | |
200 | &prefix_len); | |
201 | if (rc) { | |
202 | cifs_dbg(VFS, "%s: failed to parse target share %d\n", | |
203 | __func__, rc); | |
204 | continue; | |
205 | } | |
a3a53b76 | 206 | |
bacd704a | 207 | extract_unc_hostname(share, &dfs_host, &dfs_host_len); |
a3a53b76 PA |
208 | |
209 | if (dfs_host_len != tcp_host_len | |
210 | || strncasecmp(dfs_host, tcp_host, dfs_host_len) != 0) { | |
211 | cifs_dbg(FYI, "%s: skipping %.*s, doesn't match %.*s", | |
212 | __func__, | |
213 | (int)dfs_host_len, dfs_host, | |
214 | (int)tcp_host_len, tcp_host); | |
215 | continue; | |
216 | } | |
217 | ||
bacd704a | 218 | scnprintf(tree, MAX_TREE_SIZE, "\\%.*s", (int)share_len, share); |
a3a53b76 PA |
219 | |
220 | rc = SMB2_tcon(0, tcon->ses, tree, tcon, nlsc); | |
bacd704a PAS |
221 | if (!rc) { |
222 | rc = update_super_prepath(tcon, prefix, prefix_len); | |
a3a53b76 | 223 | break; |
bacd704a | 224 | } |
a3a53b76 PA |
225 | if (rc == -EREMOTE) |
226 | break; | |
227 | } | |
228 | ||
229 | if (!rc) { | |
230 | if (it) | |
231 | rc = dfs_cache_noreq_update_tgthint(tcon->dfs_path + 1, | |
232 | it); | |
233 | else | |
234 | rc = -ENOENT; | |
235 | } | |
236 | dfs_cache_free_tgts(&tl); | |
15bc77f9 AA |
237 | out: |
238 | kfree(tree); | |
a3a53b76 PA |
239 | return rc; |
240 | } | |
241 | #else | |
242 | static inline int __smb2_reconnect(const struct nls_table *nlsc, | |
243 | struct cifs_tcon *tcon) | |
244 | { | |
245 | return SMB2_tcon(0, tcon->ses, tcon->treeName, tcon, nlsc); | |
246 | } | |
247 | #endif | |
248 | ||
ec2e4523 PS |
249 | static int |
250 | smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon) | |
251 | { | |
7ffbe655 | 252 | int rc; |
aa24d1e9 PS |
253 | struct nls_table *nls_codepage; |
254 | struct cifs_ses *ses; | |
255 | struct TCP_Server_Info *server; | |
a3a53b76 | 256 | int retries; |
aa24d1e9 PS |
257 | |
258 | /* | |
259 | * SMB2s NegProt, SessSetup, Logoff do not have tcon yet so | |
260 | * check for tcp and smb session status done differently | |
261 | * for those three - in the calling routine. | |
262 | */ | |
263 | if (tcon == NULL) | |
7ffbe655 | 264 | return 0; |
aa24d1e9 | 265 | |
84a1f5b1 | 266 | if (smb2_command == SMB2_TREE_CONNECT) |
7ffbe655 | 267 | return 0; |
aa24d1e9 PS |
268 | |
269 | if (tcon->tidStatus == CifsExiting) { | |
270 | /* | |
271 | * only tree disconnect, open, and write, | |
272 | * (and ulogoff which does not have tcon) | |
273 | * are allowed as we start force umount. | |
274 | */ | |
275 | if ((smb2_command != SMB2_WRITE) && | |
276 | (smb2_command != SMB2_CREATE) && | |
277 | (smb2_command != SMB2_TREE_DISCONNECT)) { | |
f96637be JP |
278 | cifs_dbg(FYI, "can not send cmd %d while umounting\n", |
279 | smb2_command); | |
aa24d1e9 PS |
280 | return -ENODEV; |
281 | } | |
282 | } | |
283 | if ((!tcon->ses) || (tcon->ses->status == CifsExiting) || | |
284 | (!tcon->ses->server)) | |
285 | return -EIO; | |
286 | ||
287 | ses = tcon->ses; | |
288 | server = ses->server; | |
289 | ||
a3a53b76 PA |
290 | retries = server->nr_targets; |
291 | ||
aa24d1e9 | 292 | /* |
a3a53b76 PA |
293 | * Give demultiplex thread up to 10 seconds to each target available for |
294 | * reconnect -- should be greater than cifs socket timeout which is 7 | |
295 | * seconds. | |
aa24d1e9 PS |
296 | */ |
297 | while (server->tcpStatus == CifsNeedReconnect) { | |
298 | /* | |
299 | * Return to caller for TREE_DISCONNECT and LOGOFF and CLOSE | |
300 | * here since they are implicitly done when session drops. | |
301 | */ | |
302 | switch (smb2_command) { | |
303 | /* | |
304 | * BB Should we keep oplock break and add flush to exceptions? | |
305 | */ | |
306 | case SMB2_TREE_DISCONNECT: | |
307 | case SMB2_CANCEL: | |
308 | case SMB2_CLOSE: | |
309 | case SMB2_OPLOCK_BREAK: | |
310 | return -EAGAIN; | |
311 | } | |
312 | ||
7ffbe655 PA |
313 | rc = wait_event_interruptible_timeout(server->response_q, |
314 | (server->tcpStatus != CifsNeedReconnect), | |
315 | 10 * HZ); | |
316 | if (rc < 0) { | |
317 | cifs_dbg(FYI, "%s: aborting reconnect due to a received" | |
318 | " signal by the process\n", __func__); | |
319 | return -ERESTARTSYS; | |
320 | } | |
aa24d1e9 PS |
321 | |
322 | /* are we still trying to reconnect? */ | |
323 | if (server->tcpStatus != CifsNeedReconnect) | |
324 | break; | |
325 | ||
c54849dd | 326 | if (retries && --retries) |
a3a53b76 PA |
327 | continue; |
328 | ||
aa24d1e9 PS |
329 | /* |
330 | * on "soft" mounts we wait once. Hard mounts keep | |
331 | * retrying until process is killed or server comes | |
332 | * back on-line | |
333 | */ | |
334 | if (!tcon->retry) { | |
f96637be | 335 | cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n"); |
aa24d1e9 PS |
336 | return -EHOSTDOWN; |
337 | } | |
a3a53b76 | 338 | retries = server->nr_targets; |
aa24d1e9 PS |
339 | } |
340 | ||
341 | if (!tcon->ses->need_reconnect && !tcon->need_reconnect) | |
7ffbe655 | 342 | return 0; |
aa24d1e9 PS |
343 | |
344 | nls_codepage = load_nls_default(); | |
345 | ||
346 | /* | |
347 | * need to prevent multiple threads trying to simultaneously reconnect | |
348 | * the same SMB session | |
349 | */ | |
350 | mutex_lock(&tcon->ses->session_mutex); | |
76e75270 SC |
351 | |
352 | /* | |
353 | * Recheck after acquire mutex. If another thread is negotiating | |
354 | * and the server never sends an answer the socket will be closed | |
355 | * and tcpStatus set to reconnect. | |
356 | */ | |
357 | if (server->tcpStatus == CifsNeedReconnect) { | |
358 | rc = -EHOSTDOWN; | |
359 | mutex_unlock(&tcon->ses->session_mutex); | |
360 | goto out; | |
361 | } | |
362 | ||
aa24d1e9 | 363 | rc = cifs_negotiate_protocol(0, tcon->ses); |
b0dd940e | 364 | if (!rc && tcon->ses->need_reconnect) { |
aa24d1e9 | 365 | rc = cifs_setup_session(0, tcon->ses, nls_codepage); |
b0dd940e RS |
366 | if ((rc == -EACCES) && !tcon->retry) { |
367 | rc = -EHOSTDOWN; | |
368 | mutex_unlock(&tcon->ses->session_mutex); | |
369 | goto failed; | |
370 | } | |
371 | } | |
aa24d1e9 PS |
372 | if (rc || !tcon->need_reconnect) { |
373 | mutex_unlock(&tcon->ses->session_mutex); | |
374 | goto out; | |
375 | } | |
376 | ||
377 | cifs_mark_open_files_invalid(tcon); | |
96a988ff PS |
378 | if (tcon->use_persistent) |
379 | tcon->need_reopen_files = true; | |
52ace1ef | 380 | |
a3a53b76 | 381 | rc = __smb2_reconnect(nls_codepage, tcon); |
aa24d1e9 | 382 | mutex_unlock(&tcon->ses->session_mutex); |
52ace1ef | 383 | |
f96637be | 384 | cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
c318e6c2 SF |
385 | if (rc) { |
386 | /* If sess reconnected but tcon didn't, something strange ... */ | |
387 | printk_once(KERN_WARNING "reconnect tcon failed rc = %d\n", rc); | |
aa24d1e9 | 388 | goto out; |
c318e6c2 | 389 | } |
96a988ff PS |
390 | |
391 | if (smb2_command != SMB2_INTERNAL_CMD) | |
b08484d7 | 392 | mod_delayed_work(cifsiod_wq, &server->reconnect, 0); |
96a988ff | 393 | |
aa24d1e9 | 394 | atomic_inc(&tconInfoReconnectCount); |
aa24d1e9 PS |
395 | out: |
396 | /* | |
397 | * Check if handle based operation so we know whether we can continue | |
398 | * or not without returning to caller to reset file handle. | |
399 | */ | |
400 | /* | |
401 | * BB Is flush done by server on drop of tcp session? Should we special | |
402 | * case it and skip above? | |
403 | */ | |
404 | switch (smb2_command) { | |
405 | case SMB2_FLUSH: | |
406 | case SMB2_READ: | |
407 | case SMB2_WRITE: | |
408 | case SMB2_LOCK: | |
409 | case SMB2_IOCTL: | |
410 | case SMB2_QUERY_DIRECTORY: | |
411 | case SMB2_CHANGE_NOTIFY: | |
412 | case SMB2_QUERY_INFO: | |
413 | case SMB2_SET_INFO: | |
4772c795 | 414 | rc = -EAGAIN; |
aa24d1e9 | 415 | } |
b0dd940e | 416 | failed: |
aa24d1e9 | 417 | unload_nls(nls_codepage); |
ec2e4523 PS |
418 | return rc; |
419 | } | |
420 | ||
cb200bd6 PS |
421 | static void |
422 | fill_small_buf(__le16 smb2_command, struct cifs_tcon *tcon, void *buf, | |
423 | unsigned int *total_len) | |
424 | { | |
425 | struct smb2_sync_pdu *spdu = (struct smb2_sync_pdu *)buf; | |
426 | /* lookup word count ie StructureSize from table */ | |
427 | __u16 parmsize = smb2_req_struct_sizes[le16_to_cpu(smb2_command)]; | |
428 | ||
429 | /* | |
430 | * smaller than SMALL_BUFFER_SIZE but bigger than fixed area of | |
431 | * largest operations (Create) | |
432 | */ | |
433 | memset(buf, 0, 256); | |
434 | ||
435 | smb2_hdr_assemble(&spdu->sync_hdr, smb2_command, tcon); | |
436 | spdu->StructureSize2 = cpu_to_le16(parmsize); | |
437 | ||
438 | *total_len = parmsize + sizeof(struct smb2_sync_hdr); | |
439 | } | |
440 | ||
ec2e4523 PS |
441 | /* |
442 | * Allocate and return pointer to an SMB request hdr, and set basic | |
443 | * SMB information in the SMB header. If the return code is zero, this | |
305428ac | 444 | * function must have filled in request_buf pointer. |
ec2e4523 | 445 | */ |
84a1f5b1 PAS |
446 | static int __smb2_plain_req_init(__le16 smb2_command, struct cifs_tcon *tcon, |
447 | void **request_buf, unsigned int *total_len) | |
ec2e4523 | 448 | { |
ec2e4523 | 449 | /* BB eventually switch this to SMB2 specific small buf size */ |
f46ecbd9 SB |
450 | if (smb2_command == SMB2_SET_INFO) |
451 | *request_buf = cifs_buf_get(); | |
452 | else | |
453 | *request_buf = cifs_small_buf_get(); | |
ec2e4523 PS |
454 | if (*request_buf == NULL) { |
455 | /* BB should we add a retry in here if not a writepage? */ | |
456 | return -ENOMEM; | |
457 | } | |
458 | ||
305428ac RS |
459 | fill_small_buf(smb2_command, tcon, |
460 | (struct smb2_sync_hdr *)(*request_buf), | |
461 | total_len); | |
ec2e4523 PS |
462 | |
463 | if (tcon != NULL) { | |
ec2e4523 PS |
464 | uint16_t com_code = le16_to_cpu(smb2_command); |
465 | cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_sent[com_code]); | |
ec2e4523 PS |
466 | cifs_stats_inc(&tcon->num_smbs_sent); |
467 | } | |
468 | ||
84a1f5b1 PAS |
469 | return 0; |
470 | } | |
471 | ||
472 | static int smb2_plain_req_init(__le16 smb2_command, struct cifs_tcon *tcon, | |
473 | void **request_buf, unsigned int *total_len) | |
474 | { | |
475 | int rc; | |
476 | ||
477 | rc = smb2_reconnect(smb2_command, tcon); | |
478 | if (rc) | |
479 | return rc; | |
480 | ||
481 | return __smb2_plain_req_init(smb2_command, tcon, request_buf, | |
482 | total_len); | |
483 | } | |
484 | ||
485 | static int smb2_ioctl_req_init(u32 opcode, struct cifs_tcon *tcon, | |
486 | void **request_buf, unsigned int *total_len) | |
487 | { | |
488 | /* Skip reconnect only for FSCTL_VALIDATE_NEGOTIATE_INFO IOCTLs */ | |
489 | if (opcode == FSCTL_VALIDATE_NEGOTIATE_INFO) { | |
490 | return __smb2_plain_req_init(SMB2_IOCTL, tcon, request_buf, | |
491 | total_len); | |
492 | } | |
493 | return smb2_plain_req_init(SMB2_IOCTL, tcon, request_buf, total_len); | |
ec2e4523 PS |
494 | } |
495 | ||
d7bef4c4 | 496 | /* For explanation of negotiate contexts see MS-SMB2 section 2.2.3.1 */ |
ebb3a9d4 SF |
497 | |
498 | static void | |
499 | build_preauth_ctxt(struct smb2_preauth_neg_context *pneg_ctxt) | |
500 | { | |
501 | pneg_ctxt->ContextType = SMB2_PREAUTH_INTEGRITY_CAPABILITIES; | |
502 | pneg_ctxt->DataLength = cpu_to_le16(38); | |
503 | pneg_ctxt->HashAlgorithmCount = cpu_to_le16(1); | |
504 | pneg_ctxt->SaltLength = cpu_to_le16(SMB311_SALT_SIZE); | |
505 | get_random_bytes(pneg_ctxt->Salt, SMB311_SALT_SIZE); | |
506 | pneg_ctxt->HashAlgorithms = SMB2_PREAUTH_INTEGRITY_SHA512; | |
507 | } | |
508 | ||
26ea888f SF |
509 | static void |
510 | build_compression_ctxt(struct smb2_compression_capabilities_context *pneg_ctxt) | |
511 | { | |
512 | pneg_ctxt->ContextType = SMB2_COMPRESSION_CAPABILITIES; | |
513 | pneg_ctxt->DataLength = | |
514 | cpu_to_le16(sizeof(struct smb2_compression_capabilities_context) | |
515 | - sizeof(struct smb2_neg_context)); | |
516 | pneg_ctxt->CompressionAlgorithmCount = cpu_to_le16(3); | |
517 | pneg_ctxt->CompressionAlgorithms[0] = SMB3_COMPRESS_LZ77; | |
518 | pneg_ctxt->CompressionAlgorithms[1] = SMB3_COMPRESS_LZ77_HUFF; | |
519 | pneg_ctxt->CompressionAlgorithms[2] = SMB3_COMPRESS_LZNT1; | |
520 | } | |
521 | ||
ebb3a9d4 SF |
522 | static void |
523 | build_encrypt_ctxt(struct smb2_encryption_neg_context *pneg_ctxt) | |
524 | { | |
525 | pneg_ctxt->ContextType = SMB2_ENCRYPTION_CAPABILITIES; | |
9ac63ec7 SF |
526 | pneg_ctxt->DataLength = cpu_to_le16(6); /* Cipher Count + two ciphers */ |
527 | pneg_ctxt->CipherCount = cpu_to_le16(2); | |
528 | pneg_ctxt->Ciphers[0] = SMB2_ENCRYPTION_AES128_GCM; | |
529 | pneg_ctxt->Ciphers[1] = SMB2_ENCRYPTION_AES128_CCM; | |
ebb3a9d4 SF |
530 | } |
531 | ||
96d3cca1 SF |
532 | static unsigned int |
533 | build_netname_ctxt(struct smb2_netname_neg_context *pneg_ctxt, char *hostname) | |
534 | { | |
535 | struct nls_table *cp = load_nls_default(); | |
536 | ||
537 | pneg_ctxt->ContextType = SMB2_NETNAME_NEGOTIATE_CONTEXT_ID; | |
538 | ||
539 | /* copy up to max of first 100 bytes of server name to NetName field */ | |
df58fae7 | 540 | pneg_ctxt->DataLength = cpu_to_le16(2 * cifs_strtoUTF16(pneg_ctxt->NetName, hostname, 100, cp)); |
96d3cca1 SF |
541 | /* context size is DataLength + minimal smb2_neg_context */ |
542 | return DIV_ROUND_UP(le16_to_cpu(pneg_ctxt->DataLength) + | |
543 | sizeof(struct smb2_neg_context), 8) * 8; | |
544 | } | |
545 | ||
fcef0db6 SF |
546 | static void |
547 | build_posix_ctxt(struct smb2_posix_neg_context *pneg_ctxt) | |
548 | { | |
549 | pneg_ctxt->ContextType = SMB2_POSIX_EXTENSIONS_AVAILABLE; | |
550 | pneg_ctxt->DataLength = cpu_to_le16(POSIX_CTXT_DATA_LEN); | |
0d481325 SF |
551 | /* SMB2_CREATE_TAG_POSIX is "0x93AD25509CB411E7B42383DE968BCD7C" */ |
552 | pneg_ctxt->Name[0] = 0x93; | |
553 | pneg_ctxt->Name[1] = 0xAD; | |
554 | pneg_ctxt->Name[2] = 0x25; | |
555 | pneg_ctxt->Name[3] = 0x50; | |
556 | pneg_ctxt->Name[4] = 0x9C; | |
557 | pneg_ctxt->Name[5] = 0xB4; | |
558 | pneg_ctxt->Name[6] = 0x11; | |
559 | pneg_ctxt->Name[7] = 0xE7; | |
560 | pneg_ctxt->Name[8] = 0xB4; | |
561 | pneg_ctxt->Name[9] = 0x23; | |
562 | pneg_ctxt->Name[10] = 0x83; | |
563 | pneg_ctxt->Name[11] = 0xDE; | |
564 | pneg_ctxt->Name[12] = 0x96; | |
565 | pneg_ctxt->Name[13] = 0x8B; | |
566 | pneg_ctxt->Name[14] = 0xCD; | |
567 | pneg_ctxt->Name[15] = 0x7C; | |
fcef0db6 SF |
568 | } |
569 | ||
ebb3a9d4 | 570 | static void |
13cacea7 | 571 | assemble_neg_contexts(struct smb2_negotiate_req *req, |
9fe5ff1c | 572 | struct TCP_Server_Info *server, unsigned int *total_len) |
ebb3a9d4 | 573 | { |
a9f76cf8 | 574 | char *pneg_ctxt; |
fcef0db6 | 575 | unsigned int ctxt_len; |
ebb3a9d4 | 576 | |
d5c7076b SF |
577 | if (*total_len > 200) { |
578 | /* In case length corrupted don't want to overrun smb buffer */ | |
afe6f653 | 579 | cifs_server_dbg(VFS, "Bad frame length assembling neg contexts\n"); |
d5c7076b SF |
580 | return; |
581 | } | |
582 | ||
583 | /* | |
584 | * round up total_len of fixed part of SMB3 negotiate request to 8 | |
585 | * byte boundary before adding negotiate contexts | |
586 | */ | |
587 | *total_len = roundup(*total_len, 8); | |
588 | ||
589 | pneg_ctxt = (*total_len) + (char *)req; | |
590 | req->NegotiateContextOffset = cpu_to_le32(*total_len); | |
591 | ||
ebb3a9d4 | 592 | build_preauth_ctxt((struct smb2_preauth_neg_context *)pneg_ctxt); |
fcef0db6 SF |
593 | ctxt_len = DIV_ROUND_UP(sizeof(struct smb2_preauth_neg_context), 8) * 8; |
594 | *total_len += ctxt_len; | |
595 | pneg_ctxt += ctxt_len; | |
13cacea7 | 596 | |
ebb3a9d4 | 597 | build_encrypt_ctxt((struct smb2_encryption_neg_context *)pneg_ctxt); |
fcef0db6 SF |
598 | ctxt_len = DIV_ROUND_UP(sizeof(struct smb2_encryption_neg_context), 8) * 8; |
599 | *total_len += ctxt_len; | |
600 | pneg_ctxt += ctxt_len; | |
601 | ||
9fe5ff1c SF |
602 | if (server->compress_algorithm) { |
603 | build_compression_ctxt((struct smb2_compression_capabilities_context *) | |
26ea888f | 604 | pneg_ctxt); |
9fe5ff1c SF |
605 | ctxt_len = DIV_ROUND_UP( |
606 | sizeof(struct smb2_compression_capabilities_context), | |
607 | 8) * 8; | |
608 | *total_len += ctxt_len; | |
609 | pneg_ctxt += ctxt_len; | |
96d3cca1 | 610 | req->NegotiateContextCount = cpu_to_le16(5); |
9fe5ff1c | 611 | } else |
96d3cca1 SF |
612 | req->NegotiateContextCount = cpu_to_le16(4); |
613 | ||
614 | ctxt_len = build_netname_ctxt((struct smb2_netname_neg_context *)pneg_ctxt, | |
615 | server->hostname); | |
616 | *total_len += ctxt_len; | |
617 | pneg_ctxt += ctxt_len; | |
618 | ||
fcef0db6 SF |
619 | build_posix_ctxt((struct smb2_posix_neg_context *)pneg_ctxt); |
620 | *total_len += sizeof(struct smb2_posix_neg_context); | |
ebb3a9d4 | 621 | } |
5100d8a3 SF |
622 | |
623 | static void decode_preauth_context(struct smb2_preauth_neg_context *ctxt) | |
624 | { | |
625 | unsigned int len = le16_to_cpu(ctxt->DataLength); | |
626 | ||
627 | /* If invalid preauth context warn but use what we requested, SHA-512 */ | |
628 | if (len < MIN_PREAUTH_CTXT_DATA_LEN) { | |
629 | printk_once(KERN_WARNING "server sent bad preauth context\n"); | |
630 | return; | |
631 | } | |
632 | if (le16_to_cpu(ctxt->HashAlgorithmCount) != 1) | |
633 | printk_once(KERN_WARNING "illegal SMB3 hash algorithm count\n"); | |
634 | if (ctxt->HashAlgorithms != SMB2_PREAUTH_INTEGRITY_SHA512) | |
635 | printk_once(KERN_WARNING "unknown SMB3 hash algorithm\n"); | |
636 | } | |
637 | ||
26ea888f SF |
638 | static void decode_compress_ctx(struct TCP_Server_Info *server, |
639 | struct smb2_compression_capabilities_context *ctxt) | |
640 | { | |
641 | unsigned int len = le16_to_cpu(ctxt->DataLength); | |
642 | ||
643 | /* sizeof compress context is a one element compression capbility struct */ | |
644 | if (len < 10) { | |
645 | printk_once(KERN_WARNING "server sent bad compression cntxt\n"); | |
646 | return; | |
647 | } | |
648 | if (le16_to_cpu(ctxt->CompressionAlgorithmCount) != 1) { | |
649 | printk_once(KERN_WARNING "illegal SMB3 compress algorithm count\n"); | |
650 | return; | |
651 | } | |
652 | if (le16_to_cpu(ctxt->CompressionAlgorithms[0]) > 3) { | |
653 | printk_once(KERN_WARNING "unknown compression algorithm\n"); | |
654 | return; | |
655 | } | |
656 | server->compress_algorithm = ctxt->CompressionAlgorithms[0]; | |
657 | } | |
658 | ||
5100d8a3 SF |
659 | static int decode_encrypt_ctx(struct TCP_Server_Info *server, |
660 | struct smb2_encryption_neg_context *ctxt) | |
661 | { | |
662 | unsigned int len = le16_to_cpu(ctxt->DataLength); | |
663 | ||
664 | cifs_dbg(FYI, "decode SMB3.11 encryption neg context of len %d\n", len); | |
665 | if (len < MIN_ENCRYPT_CTXT_DATA_LEN) { | |
666 | printk_once(KERN_WARNING "server sent bad crypto ctxt len\n"); | |
667 | return -EINVAL; | |
668 | } | |
669 | ||
670 | if (le16_to_cpu(ctxt->CipherCount) != 1) { | |
671 | printk_once(KERN_WARNING "illegal SMB3.11 cipher count\n"); | |
672 | return -EINVAL; | |
673 | } | |
674 | cifs_dbg(FYI, "SMB311 cipher type:%d\n", le16_to_cpu(ctxt->Ciphers[0])); | |
675 | if ((ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES128_CCM) && | |
676 | (ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES128_GCM)) { | |
677 | printk_once(KERN_WARNING "invalid SMB3.11 cipher returned\n"); | |
678 | return -EINVAL; | |
679 | } | |
680 | server->cipher_type = ctxt->Ciphers[0]; | |
23657ad7 | 681 | server->capabilities |= SMB2_GLOBAL_CAP_ENCRYPTION; |
5100d8a3 SF |
682 | return 0; |
683 | } | |
684 | ||
685 | static int smb311_decode_neg_context(struct smb2_negotiate_rsp *rsp, | |
977b6170 RS |
686 | struct TCP_Server_Info *server, |
687 | unsigned int len_of_smb) | |
5100d8a3 SF |
688 | { |
689 | struct smb2_neg_context *pctx; | |
690 | unsigned int offset = le32_to_cpu(rsp->NegotiateContextOffset); | |
691 | unsigned int ctxt_cnt = le16_to_cpu(rsp->NegotiateContextCount); | |
5100d8a3 SF |
692 | unsigned int len_of_ctxts, i; |
693 | int rc = 0; | |
694 | ||
695 | cifs_dbg(FYI, "decoding %d negotiate contexts\n", ctxt_cnt); | |
696 | if (len_of_smb <= offset) { | |
afe6f653 | 697 | cifs_server_dbg(VFS, "Invalid response: negotiate context offset\n"); |
5100d8a3 SF |
698 | return -EINVAL; |
699 | } | |
700 | ||
701 | len_of_ctxts = len_of_smb - offset; | |
702 | ||
703 | for (i = 0; i < ctxt_cnt; i++) { | |
704 | int clen; | |
705 | /* check that offset is not beyond end of SMB */ | |
706 | if (len_of_ctxts == 0) | |
707 | break; | |
708 | ||
709 | if (len_of_ctxts < sizeof(struct smb2_neg_context)) | |
710 | break; | |
711 | ||
1fc6ad2f | 712 | pctx = (struct smb2_neg_context *)(offset + (char *)rsp); |
5100d8a3 SF |
713 | clen = le16_to_cpu(pctx->DataLength); |
714 | if (clen > len_of_ctxts) | |
715 | break; | |
716 | ||
717 | if (pctx->ContextType == SMB2_PREAUTH_INTEGRITY_CAPABILITIES) | |
718 | decode_preauth_context( | |
719 | (struct smb2_preauth_neg_context *)pctx); | |
720 | else if (pctx->ContextType == SMB2_ENCRYPTION_CAPABILITIES) | |
721 | rc = decode_encrypt_ctx(server, | |
722 | (struct smb2_encryption_neg_context *)pctx); | |
26ea888f SF |
723 | else if (pctx->ContextType == SMB2_COMPRESSION_CAPABILITIES) |
724 | decode_compress_ctx(server, | |
725 | (struct smb2_compression_capabilities_context *)pctx); | |
fcef0db6 SF |
726 | else if (pctx->ContextType == SMB2_POSIX_EXTENSIONS_AVAILABLE) |
727 | server->posix_ext_supported = true; | |
5100d8a3 | 728 | else |
afe6f653 | 729 | cifs_server_dbg(VFS, "unknown negcontext of type %d ignored\n", |
5100d8a3 SF |
730 | le16_to_cpu(pctx->ContextType)); |
731 | ||
732 | if (rc) | |
733 | break; | |
734 | /* offsets must be 8 byte aligned */ | |
735 | clen = (clen + 7) & ~0x7; | |
736 | offset += clen + sizeof(struct smb2_neg_context); | |
737 | len_of_ctxts -= clen; | |
738 | } | |
739 | return rc; | |
740 | } | |
741 | ||
ce558b0e SF |
742 | static struct create_posix * |
743 | create_posix_buf(umode_t mode) | |
744 | { | |
745 | struct create_posix *buf; | |
746 | ||
747 | buf = kzalloc(sizeof(struct create_posix), | |
748 | GFP_KERNEL); | |
749 | if (!buf) | |
750 | return NULL; | |
751 | ||
752 | buf->ccontext.DataOffset = | |
753 | cpu_to_le16(offsetof(struct create_posix, Mode)); | |
754 | buf->ccontext.DataLength = cpu_to_le32(4); | |
755 | buf->ccontext.NameOffset = | |
756 | cpu_to_le16(offsetof(struct create_posix, Name)); | |
757 | buf->ccontext.NameLength = cpu_to_le16(16); | |
758 | ||
759 | /* SMB2_CREATE_TAG_POSIX is "0x93AD25509CB411E7B42383DE968BCD7C" */ | |
760 | buf->Name[0] = 0x93; | |
761 | buf->Name[1] = 0xAD; | |
762 | buf->Name[2] = 0x25; | |
763 | buf->Name[3] = 0x50; | |
764 | buf->Name[4] = 0x9C; | |
765 | buf->Name[5] = 0xB4; | |
766 | buf->Name[6] = 0x11; | |
767 | buf->Name[7] = 0xE7; | |
768 | buf->Name[8] = 0xB4; | |
769 | buf->Name[9] = 0x23; | |
770 | buf->Name[10] = 0x83; | |
771 | buf->Name[11] = 0xDE; | |
772 | buf->Name[12] = 0x96; | |
773 | buf->Name[13] = 0x8B; | |
774 | buf->Name[14] = 0xCD; | |
775 | buf->Name[15] = 0x7C; | |
776 | buf->Mode = cpu_to_le32(mode); | |
777 | cifs_dbg(FYI, "mode on posix create 0%o", mode); | |
778 | return buf; | |
779 | } | |
780 | ||
781 | static int | |
782 | add_posix_context(struct kvec *iov, unsigned int *num_iovec, umode_t mode) | |
783 | { | |
784 | struct smb2_create_req *req = iov[0].iov_base; | |
785 | unsigned int num = *num_iovec; | |
786 | ||
787 | iov[num].iov_base = create_posix_buf(mode); | |
d0959b08 SF |
788 | if (mode == ACL_NO_MODE) |
789 | cifs_dbg(FYI, "illegal mode\n"); | |
ce558b0e SF |
790 | if (iov[num].iov_base == NULL) |
791 | return -ENOMEM; | |
792 | iov[num].iov_len = sizeof(struct create_posix); | |
793 | if (!req->CreateContextsOffset) | |
794 | req->CreateContextsOffset = cpu_to_le32( | |
795 | sizeof(struct smb2_create_req) + | |
796 | iov[num - 1].iov_len); | |
797 | le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_posix)); | |
798 | *num_iovec = num + 1; | |
799 | return 0; | |
800 | } | |
801 | ||
ebb3a9d4 | 802 | |
ec2e4523 PS |
803 | /* |
804 | * | |
805 | * SMB2 Worker functions follow: | |
806 | * | |
807 | * The general structure of the worker functions is: | |
808 | * 1) Call smb2_init (assembles SMB2 header) | |
809 | * 2) Initialize SMB2 command specific fields in fixed length area of SMB | |
810 | * 3) Call smb_sendrcv2 (sends request on socket and waits for response) | |
811 | * 4) Decode SMB2 command specific fields in the fixed length area | |
812 | * 5) Decode variable length data area (if any for this SMB2 command type) | |
813 | * 6) Call free smb buffer | |
814 | * 7) return | |
815 | * | |
816 | */ | |
817 | ||
818 | int | |
819 | SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses) | |
820 | { | |
40eff45b | 821 | struct smb_rqst rqst; |
ec2e4523 PS |
822 | struct smb2_negotiate_req *req; |
823 | struct smb2_negotiate_rsp *rsp; | |
824 | struct kvec iov[1]; | |
da502f7d | 825 | struct kvec rsp_iov; |
ec2e4523 PS |
826 | int rc = 0; |
827 | int resp_buftype; | |
f6a6bf7c | 828 | struct TCP_Server_Info *server = cifs_ses_server(ses); |
ec2e4523 PS |
829 | int blob_offset, blob_length; |
830 | char *security_blob; | |
831 | int flags = CIFS_NEG_OP; | |
13cacea7 | 832 | unsigned int total_len; |
ec2e4523 | 833 | |
f96637be | 834 | cifs_dbg(FYI, "Negotiate protocol\n"); |
ec2e4523 | 835 | |
3534b850 JL |
836 | if (!server) { |
837 | WARN(1, "%s: server is NULL!\n", __func__); | |
838 | return -EIO; | |
ec2e4523 PS |
839 | } |
840 | ||
13cacea7 | 841 | rc = smb2_plain_req_init(SMB2_NEGOTIATE, NULL, (void **) &req, &total_len); |
ec2e4523 PS |
842 | if (rc) |
843 | return rc; | |
844 | ||
13cacea7 | 845 | req->sync_hdr.SessionId = 0; |
0fdfef9a | 846 | |
8bd68c6e AA |
847 | memset(server->preauth_sha_hash, 0, SMB2_PREAUTH_HASH_SIZE); |
848 | memset(ses->preauth_sha_hash, 0, SMB2_PREAUTH_HASH_SIZE); | |
ec2e4523 | 849 | |
f6a6bf7c | 850 | if (strcmp(server->vals->version_string, |
9764c02f SF |
851 | SMB3ANY_VERSION_STRING) == 0) { |
852 | req->Dialects[0] = cpu_to_le16(SMB30_PROT_ID); | |
853 | req->Dialects[1] = cpu_to_le16(SMB302_PROT_ID); | |
854 | req->DialectCount = cpu_to_le16(2); | |
13cacea7 | 855 | total_len += 4; |
afe6f653 | 856 | } else if (strcmp(server->vals->version_string, |
9764c02f SF |
857 | SMBDEFAULT_VERSION_STRING) == 0) { |
858 | req->Dialects[0] = cpu_to_le16(SMB21_PROT_ID); | |
859 | req->Dialects[1] = cpu_to_le16(SMB30_PROT_ID); | |
860 | req->Dialects[2] = cpu_to_le16(SMB302_PROT_ID); | |
d5c7076b SF |
861 | req->Dialects[3] = cpu_to_le16(SMB311_PROT_ID); |
862 | req->DialectCount = cpu_to_le16(4); | |
863 | total_len += 8; | |
9764c02f SF |
864 | } else { |
865 | /* otherwise send specific dialect */ | |
f6a6bf7c | 866 | req->Dialects[0] = cpu_to_le16(server->vals->protocol_id); |
9764c02f | 867 | req->DialectCount = cpu_to_le16(1); |
13cacea7 | 868 | total_len += 2; |
9764c02f | 869 | } |
ec2e4523 PS |
870 | |
871 | /* only one of SMB2 signing flags may be set in SMB2 request */ | |
38d77c50 | 872 | if (ses->sign) |
9cd2e62c | 873 | req->SecurityMode = cpu_to_le16(SMB2_NEGOTIATE_SIGNING_REQUIRED); |
38d77c50 | 874 | else if (global_secflags & CIFSSEC_MAY_SIGN) |
9cd2e62c | 875 | req->SecurityMode = cpu_to_le16(SMB2_NEGOTIATE_SIGNING_ENABLED); |
38d77c50 JL |
876 | else |
877 | req->SecurityMode = 0; | |
ec2e4523 | 878 | |
afe6f653 | 879 | req->Capabilities = cpu_to_le32(server->vals->req_capabilities); |
ec2e4523 | 880 | |
3c5f9be1 | 881 | /* ClientGUID must be zero for SMB2.02 dialect */ |
afe6f653 | 882 | if (server->vals->protocol_id == SMB20_PROT_ID) |
3c5f9be1 | 883 | memset(req->ClientGUID, 0, SMB2_CLIENT_GUID_SIZE); |
ebb3a9d4 | 884 | else { |
3c5f9be1 SF |
885 | memcpy(req->ClientGUID, server->client_guid, |
886 | SMB2_CLIENT_GUID_SIZE); | |
afe6f653 RS |
887 | if ((server->vals->protocol_id == SMB311_PROT_ID) || |
888 | (strcmp(server->vals->version_string, | |
d5c7076b | 889 | SMBDEFAULT_VERSION_STRING) == 0)) |
9fe5ff1c | 890 | assemble_neg_contexts(req, server, &total_len); |
ebb3a9d4 | 891 | } |
ec2e4523 | 892 | iov[0].iov_base = (char *)req; |
13cacea7 | 893 | iov[0].iov_len = total_len; |
ec2e4523 | 894 | |
40eff45b RS |
895 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
896 | rqst.rq_iov = iov; | |
897 | rqst.rq_nvec = 1; | |
898 | ||
899 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d PS |
900 | cifs_small_buf_release(req); |
901 | rsp = (struct smb2_negotiate_rsp *)rsp_iov.iov_base; | |
ec2e4523 PS |
902 | /* |
903 | * No tcon so can't do | |
904 | * cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_fail[SMB2...]); | |
905 | */ | |
7e682f76 | 906 | if (rc == -EOPNOTSUPP) { |
afe6f653 | 907 | cifs_server_dbg(VFS, "Dialect not supported by server. Consider " |
9764c02f | 908 | "specifying vers=1.0 or vers=2.0 on mount for accessing" |
7e682f76 SF |
909 | " older servers\n"); |
910 | goto neg_exit; | |
911 | } else if (rc != 0) | |
ec2e4523 PS |
912 | goto neg_exit; |
913 | ||
afe6f653 | 914 | if (strcmp(server->vals->version_string, |
9764c02f SF |
915 | SMB3ANY_VERSION_STRING) == 0) { |
916 | if (rsp->DialectRevision == cpu_to_le16(SMB20_PROT_ID)) { | |
afe6f653 | 917 | cifs_server_dbg(VFS, |
9764c02f SF |
918 | "SMB2 dialect returned but not requested\n"); |
919 | return -EIO; | |
920 | } else if (rsp->DialectRevision == cpu_to_le16(SMB21_PROT_ID)) { | |
afe6f653 | 921 | cifs_server_dbg(VFS, |
9764c02f SF |
922 | "SMB2.1 dialect returned but not requested\n"); |
923 | return -EIO; | |
924 | } | |
afe6f653 | 925 | } else if (strcmp(server->vals->version_string, |
9764c02f SF |
926 | SMBDEFAULT_VERSION_STRING) == 0) { |
927 | if (rsp->DialectRevision == cpu_to_le16(SMB20_PROT_ID)) { | |
afe6f653 | 928 | cifs_server_dbg(VFS, |
9764c02f SF |
929 | "SMB2 dialect returned but not requested\n"); |
930 | return -EIO; | |
931 | } else if (rsp->DialectRevision == cpu_to_le16(SMB21_PROT_ID)) { | |
932 | /* ops set to 3.0 by default for default so update */ | |
afe6f653 RS |
933 | server->ops = &smb21_operations; |
934 | server->vals = &smb21_values; | |
b57a55e2 | 935 | } else if (rsp->DialectRevision == cpu_to_le16(SMB311_PROT_ID)) { |
afe6f653 RS |
936 | server->ops = &smb311_operations; |
937 | server->vals = &smb311_values; | |
b57a55e2 | 938 | } |
590d08d3 | 939 | } else if (le16_to_cpu(rsp->DialectRevision) != |
afe6f653 | 940 | server->vals->protocol_id) { |
9764c02f | 941 | /* if requested single dialect ensure returned dialect matched */ |
afe6f653 | 942 | cifs_server_dbg(VFS, "Illegal 0x%x dialect returned: not requested\n", |
590d08d3 | 943 | le16_to_cpu(rsp->DialectRevision)); |
9764c02f SF |
944 | return -EIO; |
945 | } | |
946 | ||
f96637be | 947 | cifs_dbg(FYI, "mode 0x%x\n", rsp->SecurityMode); |
ec2e4523 | 948 | |
e4aa25e7 | 949 | if (rsp->DialectRevision == cpu_to_le16(SMB20_PROT_ID)) |
f96637be | 950 | cifs_dbg(FYI, "negotiated smb2.0 dialect\n"); |
e4aa25e7 | 951 | else if (rsp->DialectRevision == cpu_to_le16(SMB21_PROT_ID)) |
f96637be | 952 | cifs_dbg(FYI, "negotiated smb2.1 dialect\n"); |
e4aa25e7 | 953 | else if (rsp->DialectRevision == cpu_to_le16(SMB30_PROT_ID)) |
f96637be | 954 | cifs_dbg(FYI, "negotiated smb3.0 dialect\n"); |
20b6d8b4 SF |
955 | else if (rsp->DialectRevision == cpu_to_le16(SMB302_PROT_ID)) |
956 | cifs_dbg(FYI, "negotiated smb3.02 dialect\n"); | |
5f7fbf73 SF |
957 | else if (rsp->DialectRevision == cpu_to_le16(SMB311_PROT_ID)) |
958 | cifs_dbg(FYI, "negotiated smb3.1.1 dialect\n"); | |
ec2e4523 | 959 | else { |
afe6f653 | 960 | cifs_server_dbg(VFS, "Illegal dialect returned by server 0x%x\n", |
f96637be | 961 | le16_to_cpu(rsp->DialectRevision)); |
ec2e4523 PS |
962 | rc = -EIO; |
963 | goto neg_exit; | |
964 | } | |
965 | server->dialect = le16_to_cpu(rsp->DialectRevision); | |
966 | ||
8bd68c6e AA |
967 | /* |
968 | * Keep a copy of the hash after negprot. This hash will be | |
969 | * the starting hash value for all sessions made from this | |
970 | * server. | |
971 | */ | |
972 | memcpy(server->preauth_sha_hash, ses->preauth_sha_hash, | |
973 | SMB2_PREAUTH_HASH_SIZE); | |
0fdfef9a | 974 | |
e598d1d8 JL |
975 | /* SMB2 only has an extended negflavor */ |
976 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; | |
2365c4ea PS |
977 | /* set it to the maximum buffer size value we can send with 1 credit */ |
978 | server->maxBuf = min_t(unsigned int, le32_to_cpu(rsp->MaxTransactSize), | |
979 | SMB2_MAX_BUFFER_SIZE); | |
ec2e4523 PS |
980 | server->max_read = le32_to_cpu(rsp->MaxReadSize); |
981 | server->max_write = le32_to_cpu(rsp->MaxWriteSize); | |
ec2e4523 | 982 | server->sec_mode = le16_to_cpu(rsp->SecurityMode); |
07108d0e SF |
983 | if ((server->sec_mode & SMB2_SEC_MODE_FLAGS_ALL) != server->sec_mode) |
984 | cifs_dbg(FYI, "Server returned unexpected security mode 0x%x\n", | |
985 | server->sec_mode); | |
ec2e4523 | 986 | server->capabilities = le32_to_cpu(rsp->Capabilities); |
29e20f9c PS |
987 | /* Internal types */ |
988 | server->capabilities |= SMB2_NT_FIND | SMB2_LARGE_FILES; | |
ec2e4523 PS |
989 | |
990 | security_blob = smb2_get_data_area_len(&blob_offset, &blob_length, | |
49f466bd | 991 | (struct smb2_sync_hdr *)rsp); |
5d875cc9 SF |
992 | /* |
993 | * See MS-SMB2 section 2.2.4: if no blob, client picks default which | |
994 | * for us will be | |
995 | * ses->sectype = RawNTLMSSP; | |
996 | * but for time being this is our only auth choice so doesn't matter. | |
997 | * We just found a server which sets blob length to zero expecting raw. | |
998 | */ | |
67dbea2c | 999 | if (blob_length == 0) { |
5d875cc9 | 1000 | cifs_dbg(FYI, "missing security blob on negprot\n"); |
67dbea2c PS |
1001 | server->sec_ntlmssp = true; |
1002 | } | |
3c1bf7e4 | 1003 | |
38d77c50 | 1004 | rc = cifs_enable_signing(server, ses->sign); |
9ddec561 JL |
1005 | if (rc) |
1006 | goto neg_exit; | |
ceb1b0b9 | 1007 | if (blob_length) { |
ebdd207e | 1008 | rc = decode_negTokenInit(security_blob, blob_length, server); |
ceb1b0b9 SF |
1009 | if (rc == 1) |
1010 | rc = 0; | |
1011 | else if (rc == 0) | |
1012 | rc = -EIO; | |
ec2e4523 | 1013 | } |
5100d8a3 | 1014 | |
5100d8a3 SF |
1015 | if (rsp->DialectRevision == cpu_to_le16(SMB311_PROT_ID)) { |
1016 | if (rsp->NegotiateContextCount) | |
977b6170 RS |
1017 | rc = smb311_decode_neg_context(rsp, server, |
1018 | rsp_iov.iov_len); | |
5100d8a3 | 1019 | else |
afe6f653 | 1020 | cifs_server_dbg(VFS, "Missing expected negotiate contexts\n"); |
5100d8a3 | 1021 | } |
ec2e4523 PS |
1022 | neg_exit: |
1023 | free_rsp_buf(resp_buftype, rsp); | |
1024 | return rc; | |
1025 | } | |
5478f9ba | 1026 | |
ff1c038a SF |
1027 | int smb3_validate_negotiate(const unsigned int xid, struct cifs_tcon *tcon) |
1028 | { | |
2796d303 LL |
1029 | int rc; |
1030 | struct validate_negotiate_info_req *pneg_inbuf; | |
fe83bebc | 1031 | struct validate_negotiate_info_rsp *pneg_rsp = NULL; |
ff1c038a | 1032 | u32 rsplen; |
9764c02f | 1033 | u32 inbuflen; /* max of 4 dialects */ |
afe6f653 | 1034 | struct TCP_Server_Info *server = tcon->ses->server; |
ff1c038a SF |
1035 | |
1036 | cifs_dbg(FYI, "validate negotiate\n"); | |
1037 | ||
8bd68c6e | 1038 | /* In SMB3.11 preauth integrity supersedes validate negotiate */ |
afe6f653 | 1039 | if (server->dialect == SMB311_PROT_ID) |
8bd68c6e AA |
1040 | return 0; |
1041 | ||
ff1c038a SF |
1042 | /* |
1043 | * validation ioctl must be signed, so no point sending this if we | |
0603c96f SF |
1044 | * can not sign it (ie are not known user). Even if signing is not |
1045 | * required (enabled but not negotiated), in those cases we selectively | |
ff1c038a | 1046 | * sign just this, the first and only signed request on a connection. |
0603c96f | 1047 | * Having validation of negotiate info helps reduce attack vectors. |
ff1c038a | 1048 | */ |
0603c96f | 1049 | if (tcon->ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) |
ff1c038a SF |
1050 | return 0; /* validation requires signing */ |
1051 | ||
0603c96f SF |
1052 | if (tcon->ses->user_name == NULL) { |
1053 | cifs_dbg(FYI, "Can't validate negotiate: null user mount\n"); | |
1054 | return 0; /* validation requires signing */ | |
1055 | } | |
1056 | ||
1057 | if (tcon->ses->session_flags & SMB2_SESSION_FLAG_IS_NULL) | |
3175eb9b | 1058 | cifs_tcon_dbg(VFS, "Unexpected null user (anonymous) auth flag sent by server\n"); |
0603c96f | 1059 | |
2796d303 LL |
1060 | pneg_inbuf = kmalloc(sizeof(*pneg_inbuf), GFP_NOFS); |
1061 | if (!pneg_inbuf) | |
1062 | return -ENOMEM; | |
1063 | ||
1064 | pneg_inbuf->Capabilities = | |
afe6f653 RS |
1065 | cpu_to_le32(server->vals->req_capabilities); |
1066 | memcpy(pneg_inbuf->Guid, server->client_guid, | |
39552ea8 | 1067 | SMB2_CLIENT_GUID_SIZE); |
ff1c038a SF |
1068 | |
1069 | if (tcon->ses->sign) | |
2796d303 | 1070 | pneg_inbuf->SecurityMode = |
ff1c038a SF |
1071 | cpu_to_le16(SMB2_NEGOTIATE_SIGNING_REQUIRED); |
1072 | else if (global_secflags & CIFSSEC_MAY_SIGN) | |
2796d303 | 1073 | pneg_inbuf->SecurityMode = |
ff1c038a SF |
1074 | cpu_to_le16(SMB2_NEGOTIATE_SIGNING_ENABLED); |
1075 | else | |
2796d303 | 1076 | pneg_inbuf->SecurityMode = 0; |
ff1c038a | 1077 | |
9764c02f | 1078 | |
afe6f653 | 1079 | if (strcmp(server->vals->version_string, |
9764c02f | 1080 | SMB3ANY_VERSION_STRING) == 0) { |
2796d303 LL |
1081 | pneg_inbuf->Dialects[0] = cpu_to_le16(SMB30_PROT_ID); |
1082 | pneg_inbuf->Dialects[1] = cpu_to_le16(SMB302_PROT_ID); | |
1083 | pneg_inbuf->DialectCount = cpu_to_le16(2); | |
9764c02f | 1084 | /* structure is big enough for 3 dialects, sending only 2 */ |
2796d303 | 1085 | inbuflen = sizeof(*pneg_inbuf) - |
d5c7076b | 1086 | (2 * sizeof(pneg_inbuf->Dialects[0])); |
afe6f653 | 1087 | } else if (strcmp(server->vals->version_string, |
9764c02f | 1088 | SMBDEFAULT_VERSION_STRING) == 0) { |
2796d303 LL |
1089 | pneg_inbuf->Dialects[0] = cpu_to_le16(SMB21_PROT_ID); |
1090 | pneg_inbuf->Dialects[1] = cpu_to_le16(SMB30_PROT_ID); | |
1091 | pneg_inbuf->Dialects[2] = cpu_to_le16(SMB302_PROT_ID); | |
d5c7076b SF |
1092 | pneg_inbuf->Dialects[3] = cpu_to_le16(SMB311_PROT_ID); |
1093 | pneg_inbuf->DialectCount = cpu_to_le16(4); | |
9764c02f | 1094 | /* structure is big enough for 3 dialects */ |
2796d303 | 1095 | inbuflen = sizeof(*pneg_inbuf); |
9764c02f SF |
1096 | } else { |
1097 | /* otherwise specific dialect was requested */ | |
2796d303 | 1098 | pneg_inbuf->Dialects[0] = |
afe6f653 | 1099 | cpu_to_le16(server->vals->protocol_id); |
2796d303 | 1100 | pneg_inbuf->DialectCount = cpu_to_le16(1); |
9764c02f | 1101 | /* structure is big enough for 3 dialects, sending only 1 */ |
2796d303 LL |
1102 | inbuflen = sizeof(*pneg_inbuf) - |
1103 | sizeof(pneg_inbuf->Dialects[0]) * 2; | |
9764c02f | 1104 | } |
ff1c038a SF |
1105 | |
1106 | rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, | |
1107 | FSCTL_VALIDATE_NEGOTIATE_INFO, true /* is_fsctl */, | |
153322f7 SF |
1108 | (char *)pneg_inbuf, inbuflen, CIFSMaxBufSize, |
1109 | (char **)&pneg_rsp, &rsplen); | |
969ae8e8 NJ |
1110 | if (rc == -EOPNOTSUPP) { |
1111 | /* | |
1112 | * Old Windows versions or Netapp SMB server can return | |
1113 | * not supported error. Client should accept it. | |
1114 | */ | |
3175eb9b | 1115 | cifs_tcon_dbg(VFS, "Server does not support validate negotiate\n"); |
21078203 CIK |
1116 | rc = 0; |
1117 | goto out_free_inbuf; | |
969ae8e8 | 1118 | } else if (rc != 0) { |
3175eb9b | 1119 | cifs_tcon_dbg(VFS, "validate protocol negotiate failed: %d\n", rc); |
2796d303 LL |
1120 | rc = -EIO; |
1121 | goto out_free_inbuf; | |
ff1c038a SF |
1122 | } |
1123 | ||
2796d303 LL |
1124 | rc = -EIO; |
1125 | if (rsplen != sizeof(*pneg_rsp)) { | |
3175eb9b | 1126 | cifs_tcon_dbg(VFS, "invalid protocol negotiate response size: %d\n", |
7db0a6ef SF |
1127 | rsplen); |
1128 | ||
1129 | /* relax check since Mac returns max bufsize allowed on ioctl */ | |
2796d303 LL |
1130 | if (rsplen > CIFSMaxBufSize || rsplen < sizeof(*pneg_rsp)) |
1131 | goto out_free_rsp; | |
ff1c038a SF |
1132 | } |
1133 | ||
1134 | /* check validate negotiate info response matches what we got earlier */ | |
afe6f653 | 1135 | if (pneg_rsp->Dialect != cpu_to_le16(server->dialect)) |
ff1c038a SF |
1136 | goto vneg_out; |
1137 | ||
afe6f653 | 1138 | if (pneg_rsp->SecurityMode != cpu_to_le16(server->sec_mode)) |
ff1c038a SF |
1139 | goto vneg_out; |
1140 | ||
1141 | /* do not validate server guid because not saved at negprot time yet */ | |
1142 | ||
1143 | if ((le32_to_cpu(pneg_rsp->Capabilities) | SMB2_NT_FIND | | |
afe6f653 | 1144 | SMB2_LARGE_FILES) != server->capabilities) |
ff1c038a SF |
1145 | goto vneg_out; |
1146 | ||
1147 | /* validate negotiate successful */ | |
2796d303 | 1148 | rc = 0; |
ff1c038a | 1149 | cifs_dbg(FYI, "validate negotiate info successful\n"); |
2796d303 | 1150 | goto out_free_rsp; |
ff1c038a SF |
1151 | |
1152 | vneg_out: | |
3175eb9b | 1153 | cifs_tcon_dbg(VFS, "protocol revalidation - security settings mismatch\n"); |
2796d303 | 1154 | out_free_rsp: |
fe83bebc | 1155 | kfree(pneg_rsp); |
2796d303 LL |
1156 | out_free_inbuf: |
1157 | kfree(pneg_inbuf); | |
1158 | return rc; | |
ff1c038a SF |
1159 | } |
1160 | ||
ef65aaed SP |
1161 | enum securityEnum |
1162 | smb2_select_sectype(struct TCP_Server_Info *server, enum securityEnum requested) | |
1163 | { | |
1164 | switch (requested) { | |
1165 | case Kerberos: | |
1166 | case RawNTLMSSP: | |
1167 | return requested; | |
1168 | case NTLMv2: | |
1169 | return RawNTLMSSP; | |
1170 | case Unspecified: | |
1171 | if (server->sec_ntlmssp && | |
1172 | (global_secflags & CIFSSEC_MAY_NTLMSSP)) | |
1173 | return RawNTLMSSP; | |
1174 | if ((server->sec_kerberos || server->sec_mskerberos) && | |
1175 | (global_secflags & CIFSSEC_MAY_KRB5)) | |
1176 | return Kerberos; | |
1177 | /* Fallthrough */ | |
1178 | default: | |
1179 | return Unspecified; | |
1180 | } | |
1181 | } | |
1182 | ||
3baf1a7b SP |
1183 | struct SMB2_sess_data { |
1184 | unsigned int xid; | |
1185 | struct cifs_ses *ses; | |
1186 | struct nls_table *nls_cp; | |
1187 | void (*func)(struct SMB2_sess_data *); | |
1188 | int result; | |
1189 | u64 previous_session; | |
1190 | ||
1191 | /* we will send the SMB in three pieces: | |
1192 | * a fixed length beginning part, an optional | |
1193 | * SPNEGO blob (which can be zero length), and a | |
1194 | * last part which will include the strings | |
1195 | * and rest of bcc area. This allows us to avoid | |
1196 | * a large buffer 17K allocation | |
1197 | */ | |
1198 | int buf0_type; | |
1199 | struct kvec iov[2]; | |
1200 | }; | |
1201 | ||
1202 | static int | |
1203 | SMB2_sess_alloc_buffer(struct SMB2_sess_data *sess_data) | |
1204 | { | |
1205 | int rc; | |
1206 | struct cifs_ses *ses = sess_data->ses; | |
1207 | struct smb2_sess_setup_req *req; | |
f6a6bf7c | 1208 | struct TCP_Server_Info *server = cifs_ses_server(ses); |
88ea5cb7 | 1209 | unsigned int total_len; |
3baf1a7b | 1210 | |
88ea5cb7 RS |
1211 | rc = smb2_plain_req_init(SMB2_SESSION_SETUP, NULL, (void **) &req, |
1212 | &total_len); | |
3baf1a7b SP |
1213 | if (rc) |
1214 | return rc; | |
1215 | ||
d70e9fa5 AA |
1216 | if (sess_data->ses->binding) { |
1217 | req->sync_hdr.SessionId = sess_data->ses->Suid; | |
1218 | req->sync_hdr.Flags |= SMB2_FLAGS_SIGNED; | |
1219 | req->PreviousSessionId = 0; | |
1220 | req->Flags = SMB2_SESSION_REQ_FLAG_BINDING; | |
1221 | } else { | |
1222 | /* First session, not a reauthenticate */ | |
1223 | req->sync_hdr.SessionId = 0; | |
1224 | /* | |
1225 | * if reconnect, we need to send previous sess id | |
1226 | * otherwise it is 0 | |
1227 | */ | |
1228 | req->PreviousSessionId = sess_data->previous_session; | |
1229 | req->Flags = 0; /* MBZ */ | |
1230 | } | |
d409014e SF |
1231 | |
1232 | /* enough to enable echos and oplocks and one max size write */ | |
1233 | req->sync_hdr.CreditRequest = cpu_to_le16(130); | |
3baf1a7b SP |
1234 | |
1235 | /* only one of SMB2 signing flags may be set in SMB2 request */ | |
1236 | if (server->sign) | |
1237 | req->SecurityMode = SMB2_NEGOTIATE_SIGNING_REQUIRED; | |
1238 | else if (global_secflags & CIFSSEC_MAY_SIGN) /* one flag unlike MUST_ */ | |
1239 | req->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED; | |
1240 | else | |
1241 | req->SecurityMode = 0; | |
1242 | ||
8d33096a SF |
1243 | #ifdef CONFIG_CIFS_DFS_UPCALL |
1244 | req->Capabilities = cpu_to_le32(SMB2_GLOBAL_CAP_DFS); | |
1245 | #else | |
3baf1a7b | 1246 | req->Capabilities = 0; |
8d33096a SF |
1247 | #endif /* DFS_UPCALL */ |
1248 | ||
3baf1a7b SP |
1249 | req->Channel = 0; /* MBZ */ |
1250 | ||
1251 | sess_data->iov[0].iov_base = (char *)req; | |
88ea5cb7 RS |
1252 | /* 1 for pad */ |
1253 | sess_data->iov[0].iov_len = total_len - 1; | |
3baf1a7b SP |
1254 | /* |
1255 | * This variable will be used to clear the buffer | |
1256 | * allocated above in case of any error in the calling function. | |
1257 | */ | |
1258 | sess_data->buf0_type = CIFS_SMALL_BUFFER; | |
1259 | ||
1260 | return 0; | |
1261 | } | |
1262 | ||
1263 | static void | |
1264 | SMB2_sess_free_buffer(struct SMB2_sess_data *sess_data) | |
1265 | { | |
1266 | free_rsp_buf(sess_data->buf0_type, sess_data->iov[0].iov_base); | |
1267 | sess_data->buf0_type = CIFS_NO_BUFFER; | |
1268 | } | |
1269 | ||
1270 | static int | |
1271 | SMB2_sess_sendreceive(struct SMB2_sess_data *sess_data) | |
1272 | { | |
1273 | int rc; | |
40eff45b | 1274 | struct smb_rqst rqst; |
3baf1a7b | 1275 | struct smb2_sess_setup_req *req = sess_data->iov[0].iov_base; |
da502f7d | 1276 | struct kvec rsp_iov = { NULL, 0 }; |
3baf1a7b SP |
1277 | |
1278 | /* Testing shows that buffer offset must be at location of Buffer[0] */ | |
1279 | req->SecurityBufferOffset = | |
88ea5cb7 | 1280 | cpu_to_le16(sizeof(struct smb2_sess_setup_req) - 1 /* pad */); |
3baf1a7b SP |
1281 | req->SecurityBufferLength = cpu_to_le16(sess_data->iov[1].iov_len); |
1282 | ||
40eff45b RS |
1283 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
1284 | rqst.rq_iov = sess_data->iov; | |
1285 | rqst.rq_nvec = 2; | |
3baf1a7b | 1286 | |
40eff45b RS |
1287 | /* BB add code to build os and lm fields */ |
1288 | rc = cifs_send_recv(sess_data->xid, sess_data->ses, | |
1289 | &rqst, | |
88ea5cb7 RS |
1290 | &sess_data->buf0_type, |
1291 | CIFS_LOG_ERROR | CIFS_NEG_OP, &rsp_iov); | |
da502f7d PS |
1292 | cifs_small_buf_release(sess_data->iov[0].iov_base); |
1293 | memcpy(&sess_data->iov[0], &rsp_iov, sizeof(struct kvec)); | |
3baf1a7b SP |
1294 | |
1295 | return rc; | |
1296 | } | |
1297 | ||
1298 | static int | |
1299 | SMB2_sess_establish_session(struct SMB2_sess_data *sess_data) | |
1300 | { | |
1301 | int rc = 0; | |
1302 | struct cifs_ses *ses = sess_data->ses; | |
f6a6bf7c | 1303 | struct TCP_Server_Info *server = cifs_ses_server(ses); |
3baf1a7b | 1304 | |
f6a6bf7c AA |
1305 | mutex_lock(&server->srv_mutex); |
1306 | if (server->ops->generate_signingkey) { | |
1307 | rc = server->ops->generate_signingkey(ses); | |
3baf1a7b SP |
1308 | if (rc) { |
1309 | cifs_dbg(FYI, | |
1310 | "SMB3 session key generation failed\n"); | |
f6a6bf7c | 1311 | mutex_unlock(&server->srv_mutex); |
cabfb368 | 1312 | return rc; |
3baf1a7b SP |
1313 | } |
1314 | } | |
f6a6bf7c AA |
1315 | if (!server->session_estab) { |
1316 | server->sequence_number = 0x2; | |
1317 | server->session_estab = true; | |
3baf1a7b | 1318 | } |
f6a6bf7c | 1319 | mutex_unlock(&server->srv_mutex); |
3baf1a7b SP |
1320 | |
1321 | cifs_dbg(FYI, "SMB2/3 session established successfully\n"); | |
d70e9fa5 AA |
1322 | /* keep existing ses state if binding */ |
1323 | if (!ses->binding) { | |
1324 | spin_lock(&GlobalMid_Lock); | |
1325 | ses->status = CifsGood; | |
1326 | ses->need_reconnect = false; | |
1327 | spin_unlock(&GlobalMid_Lock); | |
1328 | } | |
1329 | ||
3baf1a7b SP |
1330 | return rc; |
1331 | } | |
1332 | ||
1333 | #ifdef CONFIG_CIFS_UPCALL | |
1334 | static void | |
1335 | SMB2_auth_kerberos(struct SMB2_sess_data *sess_data) | |
1336 | { | |
1337 | int rc; | |
1338 | struct cifs_ses *ses = sess_data->ses; | |
1339 | struct cifs_spnego_msg *msg; | |
1340 | struct key *spnego_key = NULL; | |
1341 | struct smb2_sess_setup_rsp *rsp = NULL; | |
1342 | ||
1343 | rc = SMB2_sess_alloc_buffer(sess_data); | |
1344 | if (rc) | |
1345 | goto out; | |
1346 | ||
1347 | spnego_key = cifs_get_spnego_key(ses); | |
1348 | if (IS_ERR(spnego_key)) { | |
1349 | rc = PTR_ERR(spnego_key); | |
1350 | spnego_key = NULL; | |
1351 | goto out; | |
1352 | } | |
1353 | ||
1354 | msg = spnego_key->payload.data[0]; | |
1355 | /* | |
1356 | * check version field to make sure that cifs.upcall is | |
1357 | * sending us a response in an expected form | |
1358 | */ | |
1359 | if (msg->version != CIFS_SPNEGO_UPCALL_VERSION) { | |
1360 | cifs_dbg(VFS, | |
1361 | "bad cifs.upcall version. Expected %d got %d", | |
1362 | CIFS_SPNEGO_UPCALL_VERSION, msg->version); | |
1363 | rc = -EKEYREJECTED; | |
1364 | goto out_put_spnego_key; | |
1365 | } | |
1366 | ||
d70e9fa5 AA |
1367 | /* keep session key if binding */ |
1368 | if (!ses->binding) { | |
1369 | ses->auth_key.response = kmemdup(msg->data, msg->sesskey_len, | |
1370 | GFP_KERNEL); | |
1371 | if (!ses->auth_key.response) { | |
1372 | cifs_dbg(VFS, | |
1373 | "Kerberos can't allocate (%u bytes) memory", | |
1374 | msg->sesskey_len); | |
1375 | rc = -ENOMEM; | |
1376 | goto out_put_spnego_key; | |
1377 | } | |
1378 | ses->auth_key.len = msg->sesskey_len; | |
3baf1a7b | 1379 | } |
3baf1a7b SP |
1380 | |
1381 | sess_data->iov[1].iov_base = msg->data + msg->sesskey_len; | |
1382 | sess_data->iov[1].iov_len = msg->secblob_len; | |
1383 | ||
1384 | rc = SMB2_sess_sendreceive(sess_data); | |
1385 | if (rc) | |
1386 | goto out_put_spnego_key; | |
1387 | ||
1388 | rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base; | |
d70e9fa5 AA |
1389 | /* keep session id and flags if binding */ |
1390 | if (!ses->binding) { | |
1391 | ses->Suid = rsp->sync_hdr.SessionId; | |
1392 | ses->session_flags = le16_to_cpu(rsp->SessionFlags); | |
1393 | } | |
3baf1a7b SP |
1394 | |
1395 | rc = SMB2_sess_establish_session(sess_data); | |
1396 | out_put_spnego_key: | |
1397 | key_invalidate(spnego_key); | |
1398 | key_put(spnego_key); | |
1399 | out: | |
1400 | sess_data->result = rc; | |
1401 | sess_data->func = NULL; | |
1402 | SMB2_sess_free_buffer(sess_data); | |
1403 | } | |
1404 | #else | |
1405 | static void | |
1406 | SMB2_auth_kerberos(struct SMB2_sess_data *sess_data) | |
1407 | { | |
1408 | cifs_dbg(VFS, "Kerberos negotiated but upcall support disabled!\n"); | |
1409 | sess_data->result = -EOPNOTSUPP; | |
1410 | sess_data->func = NULL; | |
1411 | } | |
1412 | #endif | |
1413 | ||
166cea4d SP |
1414 | static void |
1415 | SMB2_sess_auth_rawntlmssp_authenticate(struct SMB2_sess_data *sess_data); | |
1416 | ||
1417 | static void | |
1418 | SMB2_sess_auth_rawntlmssp_negotiate(struct SMB2_sess_data *sess_data) | |
5478f9ba | 1419 | { |
166cea4d SP |
1420 | int rc; |
1421 | struct cifs_ses *ses = sess_data->ses; | |
5478f9ba | 1422 | struct smb2_sess_setup_rsp *rsp = NULL; |
166cea4d | 1423 | char *ntlmssp_blob = NULL; |
5478f9ba | 1424 | bool use_spnego = false; /* else use raw ntlmssp */ |
166cea4d | 1425 | u16 blob_length = 0; |
d4e63bd6 | 1426 | |
5478f9ba PS |
1427 | /* |
1428 | * If memory allocation is successful, caller of this function | |
1429 | * frees it. | |
1430 | */ | |
1431 | ses->ntlmssp = kmalloc(sizeof(struct ntlmssp_auth), GFP_KERNEL); | |
166cea4d SP |
1432 | if (!ses->ntlmssp) { |
1433 | rc = -ENOMEM; | |
1434 | goto out_err; | |
1435 | } | |
5c234aa5 | 1436 | ses->ntlmssp->sesskey_per_smbsess = true; |
5478f9ba | 1437 | |
166cea4d | 1438 | rc = SMB2_sess_alloc_buffer(sess_data); |
5478f9ba | 1439 | if (rc) |
166cea4d | 1440 | goto out_err; |
5478f9ba | 1441 | |
166cea4d SP |
1442 | ntlmssp_blob = kmalloc(sizeof(struct _NEGOTIATE_MESSAGE), |
1443 | GFP_KERNEL); | |
1444 | if (ntlmssp_blob == NULL) { | |
1445 | rc = -ENOMEM; | |
1446 | goto out; | |
1447 | } | |
c2afb814 | 1448 | |
166cea4d SP |
1449 | build_ntlmssp_negotiate_blob(ntlmssp_blob, ses); |
1450 | if (use_spnego) { | |
1451 | /* BB eventually need to add this */ | |
1452 | cifs_dbg(VFS, "spnego not supported for SMB2 yet\n"); | |
1453 | rc = -EOPNOTSUPP; | |
1454 | goto out; | |
1455 | } else { | |
1456 | blob_length = sizeof(struct _NEGOTIATE_MESSAGE); | |
1457 | /* with raw NTLMSSP we don't encapsulate in SPNEGO */ | |
1458 | } | |
1459 | sess_data->iov[1].iov_base = ntlmssp_blob; | |
1460 | sess_data->iov[1].iov_len = blob_length; | |
c2afb814 | 1461 | |
166cea4d SP |
1462 | rc = SMB2_sess_sendreceive(sess_data); |
1463 | rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base; | |
5478f9ba | 1464 | |
166cea4d SP |
1465 | /* If true, rc here is expected and not an error */ |
1466 | if (sess_data->buf0_type != CIFS_NO_BUFFER && | |
49f466bd | 1467 | rsp->sync_hdr.Status == STATUS_MORE_PROCESSING_REQUIRED) |
166cea4d | 1468 | rc = 0; |
38d77c50 | 1469 | |
166cea4d SP |
1470 | if (rc) |
1471 | goto out; | |
5478f9ba | 1472 | |
1fc6ad2f | 1473 | if (offsetof(struct smb2_sess_setup_rsp, Buffer) != |
166cea4d SP |
1474 | le16_to_cpu(rsp->SecurityBufferOffset)) { |
1475 | cifs_dbg(VFS, "Invalid security buffer offset %d\n", | |
1476 | le16_to_cpu(rsp->SecurityBufferOffset)); | |
5478f9ba | 1477 | rc = -EIO; |
166cea4d | 1478 | goto out; |
5478f9ba | 1479 | } |
166cea4d SP |
1480 | rc = decode_ntlmssp_challenge(rsp->Buffer, |
1481 | le16_to_cpu(rsp->SecurityBufferLength), ses); | |
1482 | if (rc) | |
1483 | goto out; | |
5478f9ba | 1484 | |
166cea4d | 1485 | cifs_dbg(FYI, "rawntlmssp session setup challenge phase\n"); |
5478f9ba | 1486 | |
d70e9fa5 AA |
1487 | /* keep existing ses id and flags if binding */ |
1488 | if (!ses->binding) { | |
1489 | ses->Suid = rsp->sync_hdr.SessionId; | |
1490 | ses->session_flags = le16_to_cpu(rsp->SessionFlags); | |
1491 | } | |
166cea4d SP |
1492 | |
1493 | out: | |
1494 | kfree(ntlmssp_blob); | |
1495 | SMB2_sess_free_buffer(sess_data); | |
1496 | if (!rc) { | |
1497 | sess_data->result = 0; | |
1498 | sess_data->func = SMB2_sess_auth_rawntlmssp_authenticate; | |
1499 | return; | |
1500 | } | |
1501 | out_err: | |
1502 | kfree(ses->ntlmssp); | |
1503 | ses->ntlmssp = NULL; | |
1504 | sess_data->result = rc; | |
1505 | sess_data->func = NULL; | |
1506 | } | |
5478f9ba | 1507 | |
166cea4d SP |
1508 | static void |
1509 | SMB2_sess_auth_rawntlmssp_authenticate(struct SMB2_sess_data *sess_data) | |
1510 | { | |
1511 | int rc; | |
1512 | struct cifs_ses *ses = sess_data->ses; | |
1513 | struct smb2_sess_setup_req *req; | |
1514 | struct smb2_sess_setup_rsp *rsp = NULL; | |
1515 | unsigned char *ntlmssp_blob = NULL; | |
1516 | bool use_spnego = false; /* else use raw ntlmssp */ | |
1517 | u16 blob_length = 0; | |
5478f9ba | 1518 | |
166cea4d SP |
1519 | rc = SMB2_sess_alloc_buffer(sess_data); |
1520 | if (rc) | |
1521 | goto out; | |
5478f9ba | 1522 | |
166cea4d | 1523 | req = (struct smb2_sess_setup_req *) sess_data->iov[0].iov_base; |
88ea5cb7 | 1524 | req->sync_hdr.SessionId = ses->Suid; |
166cea4d SP |
1525 | |
1526 | rc = build_ntlmssp_auth_blob(&ntlmssp_blob, &blob_length, ses, | |
1527 | sess_data->nls_cp); | |
1528 | if (rc) { | |
1529 | cifs_dbg(FYI, "build_ntlmssp_auth_blob failed %d\n", rc); | |
1530 | goto out; | |
5478f9ba PS |
1531 | } |
1532 | ||
166cea4d SP |
1533 | if (use_spnego) { |
1534 | /* BB eventually need to add this */ | |
1535 | cifs_dbg(VFS, "spnego not supported for SMB2 yet\n"); | |
1536 | rc = -EOPNOTSUPP; | |
1537 | goto out; | |
1538 | } | |
1539 | sess_data->iov[1].iov_base = ntlmssp_blob; | |
1540 | sess_data->iov[1].iov_len = blob_length; | |
5478f9ba | 1541 | |
166cea4d SP |
1542 | rc = SMB2_sess_sendreceive(sess_data); |
1543 | if (rc) | |
1544 | goto out; | |
1545 | ||
1546 | rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base; | |
1547 | ||
d70e9fa5 AA |
1548 | /* keep existing ses id and flags if binding */ |
1549 | if (!ses->binding) { | |
1550 | ses->Suid = rsp->sync_hdr.SessionId; | |
1551 | ses->session_flags = le16_to_cpu(rsp->SessionFlags); | |
1552 | } | |
5478f9ba | 1553 | |
166cea4d | 1554 | rc = SMB2_sess_establish_session(sess_data); |
f560cda9 RS |
1555 | #ifdef CONFIG_CIFS_DEBUG_DUMP_KEYS |
1556 | if (ses->server->dialect < SMB30_PROT_ID) { | |
1557 | cifs_dbg(VFS, "%s: dumping generated SMB2 session keys\n", __func__); | |
1558 | /* | |
1559 | * The session id is opaque in terms of endianness, so we can't | |
1560 | * print it as a long long. we dump it as we got it on the wire | |
1561 | */ | |
1562 | cifs_dbg(VFS, "Session Id %*ph\n", (int)sizeof(ses->Suid), | |
1563 | &ses->Suid); | |
1564 | cifs_dbg(VFS, "Session Key %*ph\n", | |
1565 | SMB2_NTLMV2_SESSKEY_SIZE, ses->auth_key.response); | |
1566 | cifs_dbg(VFS, "Signing Key %*ph\n", | |
1567 | SMB3_SIGN_KEY_SIZE, ses->auth_key.response); | |
1568 | } | |
1569 | #endif | |
166cea4d SP |
1570 | out: |
1571 | kfree(ntlmssp_blob); | |
1572 | SMB2_sess_free_buffer(sess_data); | |
1573 | kfree(ses->ntlmssp); | |
1574 | ses->ntlmssp = NULL; | |
1575 | sess_data->result = rc; | |
1576 | sess_data->func = NULL; | |
1577 | } | |
d4e63bd6 | 1578 | |
166cea4d SP |
1579 | static int |
1580 | SMB2_select_sec(struct cifs_ses *ses, struct SMB2_sess_data *sess_data) | |
1581 | { | |
ef65aaed SP |
1582 | int type; |
1583 | ||
f6a6bf7c | 1584 | type = smb2_select_sectype(cifs_ses_server(ses), ses->sectype); |
ef65aaed SP |
1585 | cifs_dbg(FYI, "sess setup type %d\n", type); |
1586 | if (type == Unspecified) { | |
1587 | cifs_dbg(VFS, | |
1588 | "Unable to select appropriate authentication method!"); | |
1589 | return -EINVAL; | |
1590 | } | |
d4e63bd6 | 1591 | |
ef65aaed | 1592 | switch (type) { |
166cea4d SP |
1593 | case Kerberos: |
1594 | sess_data->func = SMB2_auth_kerberos; | |
1595 | break; | |
1596 | case RawNTLMSSP: | |
1597 | sess_data->func = SMB2_sess_auth_rawntlmssp_negotiate; | |
1598 | break; | |
1599 | default: | |
ef65aaed | 1600 | cifs_dbg(VFS, "secType %d not supported!\n", type); |
166cea4d | 1601 | return -EOPNOTSUPP; |
d4e63bd6 SP |
1602 | } |
1603 | ||
166cea4d SP |
1604 | return 0; |
1605 | } | |
1606 | ||
1607 | int | |
1608 | SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses, | |
1609 | const struct nls_table *nls_cp) | |
1610 | { | |
1611 | int rc = 0; | |
f6a6bf7c | 1612 | struct TCP_Server_Info *server = cifs_ses_server(ses); |
166cea4d SP |
1613 | struct SMB2_sess_data *sess_data; |
1614 | ||
1615 | cifs_dbg(FYI, "Session Setup\n"); | |
1616 | ||
1617 | if (!server) { | |
1618 | WARN(1, "%s: server is NULL!\n", __func__); | |
1619 | return -EIO; | |
d4e63bd6 | 1620 | } |
d4e63bd6 | 1621 | |
166cea4d SP |
1622 | sess_data = kzalloc(sizeof(struct SMB2_sess_data), GFP_KERNEL); |
1623 | if (!sess_data) | |
1624 | return -ENOMEM; | |
1625 | ||
1626 | rc = SMB2_select_sec(ses, sess_data); | |
1627 | if (rc) | |
1628 | goto out; | |
1629 | sess_data->xid = xid; | |
1630 | sess_data->ses = ses; | |
1631 | sess_data->buf0_type = CIFS_NO_BUFFER; | |
1632 | sess_data->nls_cp = (struct nls_table *) nls_cp; | |
b2adf22f | 1633 | sess_data->previous_session = ses->Suid; |
166cea4d | 1634 | |
8bd68c6e AA |
1635 | /* |
1636 | * Initialize the session hash with the server one. | |
1637 | */ | |
f6a6bf7c | 1638 | memcpy(ses->preauth_sha_hash, server->preauth_sha_hash, |
8bd68c6e | 1639 | SMB2_PREAUTH_HASH_SIZE); |
8bd68c6e | 1640 | |
166cea4d SP |
1641 | while (sess_data->func) |
1642 | sess_data->func(sess_data); | |
1643 | ||
c721c389 | 1644 | if ((ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) && (ses->sign)) |
afe6f653 | 1645 | cifs_server_dbg(VFS, "signing requested but authenticated as guest\n"); |
3baf1a7b | 1646 | rc = sess_data->result; |
166cea4d | 1647 | out: |
3baf1a7b | 1648 | kfree(sess_data); |
5478f9ba PS |
1649 | return rc; |
1650 | } | |
1651 | ||
1652 | int | |
1653 | SMB2_logoff(const unsigned int xid, struct cifs_ses *ses) | |
1654 | { | |
40eff45b | 1655 | struct smb_rqst rqst; |
5478f9ba PS |
1656 | struct smb2_logoff_req *req; /* response is also trivial struct */ |
1657 | int rc = 0; | |
1658 | struct TCP_Server_Info *server; | |
7fb8986e | 1659 | int flags = 0; |
45305eda RS |
1660 | unsigned int total_len; |
1661 | struct kvec iov[1]; | |
1662 | struct kvec rsp_iov; | |
1663 | int resp_buf_type; | |
5478f9ba | 1664 | |
f96637be | 1665 | cifs_dbg(FYI, "disconnect session %p\n", ses); |
5478f9ba PS |
1666 | |
1667 | if (ses && (ses->server)) | |
1668 | server = ses->server; | |
1669 | else | |
1670 | return -EIO; | |
1671 | ||
eb4c7df6 SP |
1672 | /* no need to send SMB logoff if uid already closed due to reconnect */ |
1673 | if (ses->need_reconnect) | |
1674 | goto smb2_session_already_dead; | |
1675 | ||
45305eda | 1676 | rc = smb2_plain_req_init(SMB2_LOGOFF, NULL, (void **) &req, &total_len); |
5478f9ba PS |
1677 | if (rc) |
1678 | return rc; | |
1679 | ||
1680 | /* since no tcon, smb2_init can not do this, so do here */ | |
45305eda | 1681 | req->sync_hdr.SessionId = ses->Suid; |
7fb8986e PS |
1682 | |
1683 | if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) | |
1684 | flags |= CIFS_TRANSFORM_REQ; | |
1685 | else if (server->sign) | |
45305eda RS |
1686 | req->sync_hdr.Flags |= SMB2_FLAGS_SIGNED; |
1687 | ||
392e1c5d | 1688 | flags |= CIFS_NO_RSP_BUF; |
45305eda RS |
1689 | |
1690 | iov[0].iov_base = (char *)req; | |
1691 | iov[0].iov_len = total_len; | |
5478f9ba | 1692 | |
40eff45b RS |
1693 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
1694 | rqst.rq_iov = iov; | |
1695 | rqst.rq_nvec = 1; | |
1696 | ||
1697 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buf_type, flags, &rsp_iov); | |
da502f7d | 1698 | cifs_small_buf_release(req); |
5478f9ba PS |
1699 | /* |
1700 | * No tcon so can't do | |
1701 | * cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_fail[SMB2...]); | |
1702 | */ | |
eb4c7df6 SP |
1703 | |
1704 | smb2_session_already_dead: | |
5478f9ba PS |
1705 | return rc; |
1706 | } | |
faaf946a PS |
1707 | |
1708 | static inline void cifs_stats_fail_inc(struct cifs_tcon *tcon, uint16_t code) | |
1709 | { | |
d60622eb | 1710 | cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_failed[code]); |
faaf946a PS |
1711 | } |
1712 | ||
1713 | #define MAX_SHARENAME_LENGTH (255 /* server */ + 80 /* share */ + 1 /* NULL */) | |
1714 | ||
de9f68df SF |
1715 | /* These are similar values to what Windows uses */ |
1716 | static inline void init_copy_chunk_defaults(struct cifs_tcon *tcon) | |
1717 | { | |
1718 | tcon->max_chunks = 256; | |
1719 | tcon->max_bytes_chunk = 1048576; | |
1720 | tcon->max_bytes_copy = 16777216; | |
1721 | } | |
1722 | ||
faaf946a PS |
1723 | int |
1724 | SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree, | |
1725 | struct cifs_tcon *tcon, const struct nls_table *cp) | |
1726 | { | |
40eff45b | 1727 | struct smb_rqst rqst; |
faaf946a PS |
1728 | struct smb2_tree_connect_req *req; |
1729 | struct smb2_tree_connect_rsp *rsp = NULL; | |
1730 | struct kvec iov[2]; | |
db3b5474 | 1731 | struct kvec rsp_iov = { NULL, 0 }; |
faaf946a PS |
1732 | int rc = 0; |
1733 | int resp_buftype; | |
1734 | int unc_path_len; | |
faaf946a | 1735 | __le16 *unc_path = NULL; |
7fb8986e | 1736 | int flags = 0; |
661bb943 | 1737 | unsigned int total_len; |
afe6f653 | 1738 | struct TCP_Server_Info *server = ses->server; |
faaf946a | 1739 | |
f96637be | 1740 | cifs_dbg(FYI, "TCON\n"); |
faaf946a | 1741 | |
afe6f653 | 1742 | if (!server || !tree) |
faaf946a PS |
1743 | return -EIO; |
1744 | ||
faaf946a PS |
1745 | unc_path = kmalloc(MAX_SHARENAME_LENGTH * 2, GFP_KERNEL); |
1746 | if (unc_path == NULL) | |
1747 | return -ENOMEM; | |
1748 | ||
1749 | unc_path_len = cifs_strtoUTF16(unc_path, tree, strlen(tree), cp) + 1; | |
1750 | unc_path_len *= 2; | |
1751 | if (unc_path_len < 2) { | |
1752 | kfree(unc_path); | |
1753 | return -EINVAL; | |
1754 | } | |
1755 | ||
806a28ef | 1756 | /* SMB2 TREE_CONNECT request must be called with TreeId == 0 */ |
b327a717 | 1757 | tcon->tid = 0; |
fae8044c | 1758 | atomic_set(&tcon->num_remote_opens, 0); |
661bb943 RS |
1759 | rc = smb2_plain_req_init(SMB2_TREE_CONNECT, tcon, (void **) &req, |
1760 | &total_len); | |
faaf946a PS |
1761 | if (rc) { |
1762 | kfree(unc_path); | |
1763 | return rc; | |
1764 | } | |
1765 | ||
5a77e75f | 1766 | if (smb3_encryption_required(tcon)) |
ae6f8dd4 | 1767 | flags |= CIFS_TRANSFORM_REQ; |
faaf946a PS |
1768 | |
1769 | iov[0].iov_base = (char *)req; | |
661bb943 RS |
1770 | /* 1 for pad */ |
1771 | iov[0].iov_len = total_len - 1; | |
faaf946a PS |
1772 | |
1773 | /* Testing shows that buffer offset must be at location of Buffer[0] */ | |
1774 | req->PathOffset = cpu_to_le16(sizeof(struct smb2_tree_connect_req) | |
661bb943 | 1775 | - 1 /* pad */); |
faaf946a PS |
1776 | req->PathLength = cpu_to_le16(unc_path_len - 2); |
1777 | iov[1].iov_base = unc_path; | |
1778 | iov[1].iov_len = unc_path_len; | |
1779 | ||
e71ab2aa RS |
1780 | /* |
1781 | * 3.11 tcon req must be signed if not encrypted. See MS-SMB2 3.2.4.1.1 | |
1782 | * unless it is guest or anonymous user. See MS-SMB2 3.2.5.3.1 | |
8c11a607 | 1783 | * (Samba servers don't always set the flag so also check if null user) |
e71ab2aa | 1784 | */ |
afe6f653 | 1785 | if ((server->dialect == SMB311_PROT_ID) && |
e71ab2aa | 1786 | !smb3_encryption_required(tcon) && |
8c11a607 SF |
1787 | !(ses->session_flags & |
1788 | (SMB2_SESSION_FLAG_IS_GUEST|SMB2_SESSION_FLAG_IS_NULL)) && | |
1789 | ((ses->user_name != NULL) || (ses->sectype == Kerberos))) | |
6188f28b SF |
1790 | req->sync_hdr.Flags |= SMB2_FLAGS_SIGNED; |
1791 | ||
40eff45b RS |
1792 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
1793 | rqst.rq_iov = iov; | |
1794 | rqst.rq_nvec = 2; | |
1795 | ||
4fe75c4e SF |
1796 | /* Need 64 for max size write so ask for more in case not there yet */ |
1797 | req->sync_hdr.CreditRequest = cpu_to_le16(64); | |
1798 | ||
40eff45b | 1799 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); |
da502f7d PS |
1800 | cifs_small_buf_release(req); |
1801 | rsp = (struct smb2_tree_connect_rsp *)rsp_iov.iov_base; | |
f8af49dd | 1802 | trace_smb3_tcon(xid, tcon->tid, ses->Suid, tree, rc); |
faaf946a PS |
1803 | if (rc != 0) { |
1804 | if (tcon) { | |
1805 | cifs_stats_fail_inc(tcon, SMB2_TREE_CONNECT_HE); | |
1806 | tcon->need_reconnect = true; | |
1807 | } | |
1808 | goto tcon_error_exit; | |
1809 | } | |
1810 | ||
cd123007 CJ |
1811 | switch (rsp->ShareType) { |
1812 | case SMB2_SHARE_TYPE_DISK: | |
f96637be | 1813 | cifs_dbg(FYI, "connection to disk share\n"); |
cd123007 CJ |
1814 | break; |
1815 | case SMB2_SHARE_TYPE_PIPE: | |
b327a717 | 1816 | tcon->pipe = true; |
f96637be | 1817 | cifs_dbg(FYI, "connection to pipe share\n"); |
cd123007 CJ |
1818 | break; |
1819 | case SMB2_SHARE_TYPE_PRINT: | |
b327a717 | 1820 | tcon->print = true; |
f96637be | 1821 | cifs_dbg(FYI, "connection to printer\n"); |
cd123007 CJ |
1822 | break; |
1823 | default: | |
afe6f653 | 1824 | cifs_server_dbg(VFS, "unknown share type %d\n", rsp->ShareType); |
faaf946a PS |
1825 | rc = -EOPNOTSUPP; |
1826 | goto tcon_error_exit; | |
1827 | } | |
1828 | ||
1829 | tcon->share_flags = le32_to_cpu(rsp->ShareFlags); | |
769ee6a4 | 1830 | tcon->capabilities = rsp->Capabilities; /* we keep caps little endian */ |
faaf946a PS |
1831 | tcon->maximal_access = le32_to_cpu(rsp->MaximalAccess); |
1832 | tcon->tidStatus = CifsGood; | |
1833 | tcon->need_reconnect = false; | |
49f466bd | 1834 | tcon->tid = rsp->sync_hdr.TreeId; |
46b51d08 | 1835 | strlcpy(tcon->treeName, tree, sizeof(tcon->treeName)); |
faaf946a PS |
1836 | |
1837 | if ((rsp->Capabilities & SMB2_SHARE_CAP_DFS) && | |
1838 | ((tcon->share_flags & SHI1005_FLAGS_DFS) == 0)) | |
3175eb9b | 1839 | cifs_tcon_dbg(VFS, "DFS capability contradicts DFS flag\n"); |
ae6f8dd4 PS |
1840 | |
1841 | if (tcon->seal && | |
afe6f653 | 1842 | !(server->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION)) |
3175eb9b | 1843 | cifs_tcon_dbg(VFS, "Encryption is requested but not supported\n"); |
ae6f8dd4 | 1844 | |
de9f68df | 1845 | init_copy_chunk_defaults(tcon); |
afe6f653 RS |
1846 | if (server->ops->validate_negotiate) |
1847 | rc = server->ops->validate_negotiate(xid, tcon); | |
faaf946a | 1848 | tcon_exit: |
f8af49dd | 1849 | |
faaf946a PS |
1850 | free_rsp_buf(resp_buftype, rsp); |
1851 | kfree(unc_path); | |
1852 | return rc; | |
1853 | ||
1854 | tcon_error_exit: | |
49f466bd | 1855 | if (rsp && rsp->sync_hdr.Status == STATUS_BAD_NETWORK_NAME) { |
3175eb9b | 1856 | cifs_tcon_dbg(VFS, "BAD_NETWORK_NAME: %s\n", tree); |
faaf946a PS |
1857 | } |
1858 | goto tcon_exit; | |
1859 | } | |
1860 | ||
1861 | int | |
1862 | SMB2_tdis(const unsigned int xid, struct cifs_tcon *tcon) | |
1863 | { | |
40eff45b | 1864 | struct smb_rqst rqst; |
faaf946a PS |
1865 | struct smb2_tree_disconnect_req *req; /* response is trivial */ |
1866 | int rc = 0; | |
faaf946a | 1867 | struct cifs_ses *ses = tcon->ses; |
7fb8986e | 1868 | int flags = 0; |
4eecf4cf RS |
1869 | unsigned int total_len; |
1870 | struct kvec iov[1]; | |
1871 | struct kvec rsp_iov; | |
1872 | int resp_buf_type; | |
faaf946a | 1873 | |
f96637be | 1874 | cifs_dbg(FYI, "Tree Disconnect\n"); |
faaf946a | 1875 | |
68a6afa7 | 1876 | if (!ses || !(ses->server)) |
faaf946a PS |
1877 | return -EIO; |
1878 | ||
1879 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) | |
1880 | return 0; | |
1881 | ||
d9191319 | 1882 | close_shroot_lease(&tcon->crfid); |
72e73c78 | 1883 | |
4eecf4cf RS |
1884 | rc = smb2_plain_req_init(SMB2_TREE_DISCONNECT, tcon, (void **) &req, |
1885 | &total_len); | |
faaf946a PS |
1886 | if (rc) |
1887 | return rc; | |
1888 | ||
5a77e75f | 1889 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
1890 | flags |= CIFS_TRANSFORM_REQ; |
1891 | ||
392e1c5d | 1892 | flags |= CIFS_NO_RSP_BUF; |
4eecf4cf RS |
1893 | |
1894 | iov[0].iov_base = (char *)req; | |
1895 | iov[0].iov_len = total_len; | |
1896 | ||
40eff45b RS |
1897 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
1898 | rqst.rq_iov = iov; | |
1899 | rqst.rq_nvec = 1; | |
1900 | ||
1901 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buf_type, flags, &rsp_iov); | |
da502f7d | 1902 | cifs_small_buf_release(req); |
faaf946a PS |
1903 | if (rc) |
1904 | cifs_stats_fail_inc(tcon, SMB2_TREE_DISCONNECT_HE); | |
1905 | ||
1906 | return rc; | |
1907 | } | |
2503a0db | 1908 | |
b8c32dbb | 1909 | |
63eb3def PS |
1910 | static struct create_durable * |
1911 | create_durable_buf(void) | |
1912 | { | |
1913 | struct create_durable *buf; | |
1914 | ||
1915 | buf = kzalloc(sizeof(struct create_durable), GFP_KERNEL); | |
1916 | if (!buf) | |
1917 | return NULL; | |
1918 | ||
1919 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
9cbc0b73 | 1920 | (struct create_durable, Data)); |
63eb3def PS |
1921 | buf->ccontext.DataLength = cpu_to_le32(16); |
1922 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
1923 | (struct create_durable, Name)); | |
1924 | buf->ccontext.NameLength = cpu_to_le16(4); | |
12197a7f | 1925 | /* SMB2_CREATE_DURABLE_HANDLE_REQUEST is "DHnQ" */ |
63eb3def PS |
1926 | buf->Name[0] = 'D'; |
1927 | buf->Name[1] = 'H'; | |
1928 | buf->Name[2] = 'n'; | |
1929 | buf->Name[3] = 'Q'; | |
1930 | return buf; | |
1931 | } | |
1932 | ||
9cbc0b73 PS |
1933 | static struct create_durable * |
1934 | create_reconnect_durable_buf(struct cifs_fid *fid) | |
1935 | { | |
1936 | struct create_durable *buf; | |
1937 | ||
1938 | buf = kzalloc(sizeof(struct create_durable), GFP_KERNEL); | |
1939 | if (!buf) | |
1940 | return NULL; | |
1941 | ||
1942 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
1943 | (struct create_durable, Data)); | |
1944 | buf->ccontext.DataLength = cpu_to_le32(16); | |
1945 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
1946 | (struct create_durable, Name)); | |
1947 | buf->ccontext.NameLength = cpu_to_le16(4); | |
1948 | buf->Data.Fid.PersistentFileId = fid->persistent_fid; | |
1949 | buf->Data.Fid.VolatileFileId = fid->volatile_fid; | |
12197a7f | 1950 | /* SMB2_CREATE_DURABLE_HANDLE_RECONNECT is "DHnC" */ |
9cbc0b73 PS |
1951 | buf->Name[0] = 'D'; |
1952 | buf->Name[1] = 'H'; | |
1953 | buf->Name[2] = 'n'; | |
1954 | buf->Name[3] = 'C'; | |
1955 | return buf; | |
1956 | } | |
1957 | ||
89a5bfa3 SF |
1958 | static void |
1959 | parse_query_id_ctxt(struct create_context *cc, struct smb2_file_all_info *buf) | |
1960 | { | |
1961 | struct create_on_disk_id *pdisk_id = (struct create_on_disk_id *)cc; | |
1962 | ||
1963 | cifs_dbg(FYI, "parse query id context 0x%llx 0x%llx\n", | |
1964 | pdisk_id->DiskFileId, pdisk_id->VolumeId); | |
1965 | buf->IndexNumber = pdisk_id->DiskFileId; | |
1966 | } | |
1967 | ||
ab3459d8 | 1968 | static void |
69dda305 AA |
1969 | parse_posix_ctxt(struct create_context *cc, struct smb2_file_all_info *info, |
1970 | struct create_posix_rsp *posix) | |
ab3459d8 | 1971 | { |
69dda305 AA |
1972 | int sid_len; |
1973 | u8 *beg = (u8 *)cc + le16_to_cpu(cc->DataOffset); | |
1974 | u8 *end = beg + le32_to_cpu(cc->DataLength); | |
1975 | u8 *sid; | |
ab3459d8 | 1976 | |
69dda305 AA |
1977 | memset(posix, 0, sizeof(*posix)); |
1978 | ||
1979 | posix->nlink = le32_to_cpu(*(__le32 *)(beg + 0)); | |
1980 | posix->reparse_tag = le32_to_cpu(*(__le32 *)(beg + 4)); | |
1981 | posix->mode = le32_to_cpu(*(__le32 *)(beg + 8)); | |
1982 | ||
1983 | sid = beg + 12; | |
1984 | sid_len = posix_info_sid_size(sid, end); | |
1985 | if (sid_len < 0) { | |
1986 | cifs_dbg(VFS, "bad owner sid in posix create response\n"); | |
1987 | return; | |
1988 | } | |
1989 | memcpy(&posix->owner, sid, sid_len); | |
1990 | ||
1991 | sid = sid + sid_len; | |
1992 | sid_len = posix_info_sid_size(sid, end); | |
1993 | if (sid_len < 0) { | |
1994 | cifs_dbg(VFS, "bad group sid in posix create response\n"); | |
1995 | return; | |
1996 | } | |
1997 | memcpy(&posix->group, sid, sid_len); | |
2e8af978 | 1998 | |
69dda305 AA |
1999 | cifs_dbg(FYI, "nlink=%d mode=%o reparse_tag=%x\n", |
2000 | posix->nlink, posix->mode, posix->reparse_tag); | |
ab3459d8 SF |
2001 | } |
2002 | ||
89a5bfa3 SF |
2003 | void |
2004 | smb2_parse_contexts(struct TCP_Server_Info *server, | |
69dda305 AA |
2005 | struct smb2_create_rsp *rsp, |
2006 | unsigned int *epoch, char *lease_key, __u8 *oplock, | |
2007 | struct smb2_file_all_info *buf, | |
2008 | struct create_posix_rsp *posix) | |
b8c32dbb PS |
2009 | { |
2010 | char *data_offset; | |
b5c7cde3 | 2011 | struct create_context *cc; |
deb7deff JM |
2012 | unsigned int next; |
2013 | unsigned int remaining; | |
fd554396 | 2014 | char *name; |
ab3459d8 SF |
2015 | const char smb3_create_tag_posix[] = {0x93, 0xAD, 0x25, 0x50, 0x9C, |
2016 | 0xB4, 0x11, 0xE7, 0xB4, 0x23, 0x83, | |
2017 | 0xDE, 0x96, 0x8B, 0xCD, 0x7C}; | |
b8c32dbb | 2018 | |
89a5bfa3 | 2019 | *oplock = 0; |
1fc6ad2f | 2020 | data_offset = (char *)rsp + le32_to_cpu(rsp->CreateContextsOffset); |
deb7deff | 2021 | remaining = le32_to_cpu(rsp->CreateContextsLength); |
b5c7cde3 | 2022 | cc = (struct create_context *)data_offset; |
89a5bfa3 SF |
2023 | |
2024 | /* Initialize inode number to 0 in case no valid data in qfid context */ | |
2025 | if (buf) | |
2026 | buf->IndexNumber = 0; | |
2027 | ||
deb7deff | 2028 | while (remaining >= sizeof(struct create_context)) { |
b5c7cde3 | 2029 | name = le16_to_cpu(cc->NameOffset) + (char *)cc; |
deb7deff | 2030 | if (le16_to_cpu(cc->NameLength) == 4 && |
89a5bfa3 SF |
2031 | strncmp(name, SMB2_CREATE_REQUEST_LEASE, 4) == 0) |
2032 | *oplock = server->ops->parse_lease_buf(cc, epoch, | |
2033 | lease_key); | |
2034 | else if (buf && (le16_to_cpu(cc->NameLength) == 4) && | |
2035 | strncmp(name, SMB2_CREATE_QUERY_ON_DISK_ID, 4) == 0) | |
2036 | parse_query_id_ctxt(cc, buf); | |
ab3459d8 | 2037 | else if ((le16_to_cpu(cc->NameLength) == 16)) { |
69dda305 AA |
2038 | if (posix && |
2039 | memcmp(name, smb3_create_tag_posix, 16) == 0) | |
2040 | parse_posix_ctxt(cc, buf, posix); | |
ab3459d8 SF |
2041 | } |
2042 | /* else { | |
2043 | cifs_dbg(FYI, "Context not matched with len %d\n", | |
2044 | le16_to_cpu(cc->NameLength)); | |
2045 | cifs_dump_mem("Cctxt name: ", name, 4); | |
2046 | } */ | |
deb7deff JM |
2047 | |
2048 | next = le32_to_cpu(cc->Next); | |
2049 | if (!next) | |
2050 | break; | |
2051 | remaining -= next; | |
2052 | cc = (struct create_context *)((char *)cc + next); | |
2053 | } | |
b8c32dbb | 2054 | |
89a5bfa3 SF |
2055 | if (rsp->OplockLevel != SMB2_OPLOCK_LEVEL_LEASE) |
2056 | *oplock = rsp->OplockLevel; | |
2057 | ||
2058 | return; | |
b8c32dbb PS |
2059 | } |
2060 | ||
d22cbfec | 2061 | static int |
a41a28bd | 2062 | add_lease_context(struct TCP_Server_Info *server, struct kvec *iov, |
729c0c9d | 2063 | unsigned int *num_iovec, u8 *lease_key, __u8 *oplock) |
d22cbfec PS |
2064 | { |
2065 | struct smb2_create_req *req = iov[0].iov_base; | |
2066 | unsigned int num = *num_iovec; | |
2067 | ||
729c0c9d | 2068 | iov[num].iov_base = server->ops->create_lease_buf(lease_key, *oplock); |
d22cbfec PS |
2069 | if (iov[num].iov_base == NULL) |
2070 | return -ENOMEM; | |
a41a28bd | 2071 | iov[num].iov_len = server->vals->create_lease_size; |
d22cbfec PS |
2072 | req->RequestedOplockLevel = SMB2_OPLOCK_LEVEL_LEASE; |
2073 | if (!req->CreateContextsOffset) | |
2074 | req->CreateContextsOffset = cpu_to_le32( | |
4f33bc35 | 2075 | sizeof(struct smb2_create_req) + |
d22cbfec | 2076 | iov[num - 1].iov_len); |
a41a28bd PS |
2077 | le32_add_cpu(&req->CreateContextsLength, |
2078 | server->vals->create_lease_size); | |
d22cbfec PS |
2079 | *num_iovec = num + 1; |
2080 | return 0; | |
2081 | } | |
2082 | ||
b56eae4d | 2083 | static struct create_durable_v2 * |
ca567eb2 | 2084 | create_durable_v2_buf(struct cifs_open_parms *oparms) |
b56eae4d | 2085 | { |
ca567eb2 | 2086 | struct cifs_fid *pfid = oparms->fid; |
b56eae4d SF |
2087 | struct create_durable_v2 *buf; |
2088 | ||
2089 | buf = kzalloc(sizeof(struct create_durable_v2), GFP_KERNEL); | |
2090 | if (!buf) | |
2091 | return NULL; | |
2092 | ||
2093 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
2094 | (struct create_durable_v2, dcontext)); | |
2095 | buf->ccontext.DataLength = cpu_to_le32(sizeof(struct durable_context_v2)); | |
2096 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
2097 | (struct create_durable_v2, Name)); | |
2098 | buf->ccontext.NameLength = cpu_to_le16(4); | |
2099 | ||
ca567eb2 SF |
2100 | /* |
2101 | * NB: Handle timeout defaults to 0, which allows server to choose | |
2102 | * (most servers default to 120 seconds) and most clients default to 0. | |
2103 | * This can be overridden at mount ("handletimeout=") if the user wants | |
2104 | * a different persistent (or resilient) handle timeout for all opens | |
2105 | * opens on a particular SMB3 mount. | |
2106 | */ | |
2107 | buf->dcontext.Timeout = cpu_to_le32(oparms->tcon->handle_timeout); | |
b56eae4d | 2108 | buf->dcontext.Flags = cpu_to_le32(SMB2_DHANDLE_FLAG_PERSISTENT); |
fa70b87c | 2109 | generate_random_uuid(buf->dcontext.CreateGuid); |
b56eae4d SF |
2110 | memcpy(pfid->create_guid, buf->dcontext.CreateGuid, 16); |
2111 | ||
2112 | /* SMB2_CREATE_DURABLE_HANDLE_REQUEST is "DH2Q" */ | |
2113 | buf->Name[0] = 'D'; | |
2114 | buf->Name[1] = 'H'; | |
2115 | buf->Name[2] = '2'; | |
2116 | buf->Name[3] = 'Q'; | |
2117 | return buf; | |
2118 | } | |
2119 | ||
2120 | static struct create_durable_handle_reconnect_v2 * | |
2121 | create_reconnect_durable_v2_buf(struct cifs_fid *fid) | |
2122 | { | |
2123 | struct create_durable_handle_reconnect_v2 *buf; | |
2124 | ||
2125 | buf = kzalloc(sizeof(struct create_durable_handle_reconnect_v2), | |
2126 | GFP_KERNEL); | |
2127 | if (!buf) | |
2128 | return NULL; | |
2129 | ||
2130 | buf->ccontext.DataOffset = | |
2131 | cpu_to_le16(offsetof(struct create_durable_handle_reconnect_v2, | |
2132 | dcontext)); | |
2133 | buf->ccontext.DataLength = | |
2134 | cpu_to_le32(sizeof(struct durable_reconnect_context_v2)); | |
2135 | buf->ccontext.NameOffset = | |
2136 | cpu_to_le16(offsetof(struct create_durable_handle_reconnect_v2, | |
2137 | Name)); | |
2138 | buf->ccontext.NameLength = cpu_to_le16(4); | |
2139 | ||
2140 | buf->dcontext.Fid.PersistentFileId = fid->persistent_fid; | |
2141 | buf->dcontext.Fid.VolatileFileId = fid->volatile_fid; | |
2142 | buf->dcontext.Flags = cpu_to_le32(SMB2_DHANDLE_FLAG_PERSISTENT); | |
2143 | memcpy(buf->dcontext.CreateGuid, fid->create_guid, 16); | |
2144 | ||
2145 | /* SMB2_CREATE_DURABLE_HANDLE_RECONNECT_V2 is "DH2C" */ | |
2146 | buf->Name[0] = 'D'; | |
2147 | buf->Name[1] = 'H'; | |
2148 | buf->Name[2] = '2'; | |
2149 | buf->Name[3] = 'C'; | |
2150 | return buf; | |
2151 | } | |
2152 | ||
63eb3def | 2153 | static int |
b56eae4d SF |
2154 | add_durable_v2_context(struct kvec *iov, unsigned int *num_iovec, |
2155 | struct cifs_open_parms *oparms) | |
2156 | { | |
2157 | struct smb2_create_req *req = iov[0].iov_base; | |
2158 | unsigned int num = *num_iovec; | |
2159 | ||
ca567eb2 | 2160 | iov[num].iov_base = create_durable_v2_buf(oparms); |
b56eae4d SF |
2161 | if (iov[num].iov_base == NULL) |
2162 | return -ENOMEM; | |
2163 | iov[num].iov_len = sizeof(struct create_durable_v2); | |
2164 | if (!req->CreateContextsOffset) | |
2165 | req->CreateContextsOffset = | |
4f33bc35 | 2166 | cpu_to_le32(sizeof(struct smb2_create_req) + |
b56eae4d SF |
2167 | iov[1].iov_len); |
2168 | le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable_v2)); | |
b56eae4d SF |
2169 | *num_iovec = num + 1; |
2170 | return 0; | |
2171 | } | |
2172 | ||
2173 | static int | |
2174 | add_durable_reconnect_v2_context(struct kvec *iov, unsigned int *num_iovec, | |
9cbc0b73 | 2175 | struct cifs_open_parms *oparms) |
63eb3def PS |
2176 | { |
2177 | struct smb2_create_req *req = iov[0].iov_base; | |
2178 | unsigned int num = *num_iovec; | |
2179 | ||
b56eae4d SF |
2180 | /* indicate that we don't need to relock the file */ |
2181 | oparms->reconnect = false; | |
2182 | ||
2183 | iov[num].iov_base = create_reconnect_durable_v2_buf(oparms->fid); | |
2184 | if (iov[num].iov_base == NULL) | |
2185 | return -ENOMEM; | |
2186 | iov[num].iov_len = sizeof(struct create_durable_handle_reconnect_v2); | |
2187 | if (!req->CreateContextsOffset) | |
2188 | req->CreateContextsOffset = | |
4f33bc35 | 2189 | cpu_to_le32(sizeof(struct smb2_create_req) + |
b56eae4d SF |
2190 | iov[1].iov_len); |
2191 | le32_add_cpu(&req->CreateContextsLength, | |
2192 | sizeof(struct create_durable_handle_reconnect_v2)); | |
b56eae4d SF |
2193 | *num_iovec = num + 1; |
2194 | return 0; | |
2195 | } | |
2196 | ||
2197 | static int | |
2198 | add_durable_context(struct kvec *iov, unsigned int *num_iovec, | |
2199 | struct cifs_open_parms *oparms, bool use_persistent) | |
2200 | { | |
2201 | struct smb2_create_req *req = iov[0].iov_base; | |
2202 | unsigned int num = *num_iovec; | |
2203 | ||
2204 | if (use_persistent) { | |
2205 | if (oparms->reconnect) | |
2206 | return add_durable_reconnect_v2_context(iov, num_iovec, | |
2207 | oparms); | |
2208 | else | |
2209 | return add_durable_v2_context(iov, num_iovec, oparms); | |
2210 | } | |
2211 | ||
9cbc0b73 PS |
2212 | if (oparms->reconnect) { |
2213 | iov[num].iov_base = create_reconnect_durable_buf(oparms->fid); | |
2214 | /* indicate that we don't need to relock the file */ | |
2215 | oparms->reconnect = false; | |
2216 | } else | |
2217 | iov[num].iov_base = create_durable_buf(); | |
63eb3def PS |
2218 | if (iov[num].iov_base == NULL) |
2219 | return -ENOMEM; | |
2220 | iov[num].iov_len = sizeof(struct create_durable); | |
2221 | if (!req->CreateContextsOffset) | |
2222 | req->CreateContextsOffset = | |
4f33bc35 | 2223 | cpu_to_le32(sizeof(struct smb2_create_req) + |
63eb3def | 2224 | iov[1].iov_len); |
31f92e9a | 2225 | le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable)); |
63eb3def PS |
2226 | *num_iovec = num + 1; |
2227 | return 0; | |
2228 | } | |
2229 | ||
cdeaf9d0 SF |
2230 | /* See MS-SMB2 2.2.13.2.7 */ |
2231 | static struct crt_twarp_ctxt * | |
2232 | create_twarp_buf(__u64 timewarp) | |
2233 | { | |
2234 | struct crt_twarp_ctxt *buf; | |
2235 | ||
2236 | buf = kzalloc(sizeof(struct crt_twarp_ctxt), GFP_KERNEL); | |
2237 | if (!buf) | |
2238 | return NULL; | |
2239 | ||
2240 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
2241 | (struct crt_twarp_ctxt, Timestamp)); | |
2242 | buf->ccontext.DataLength = cpu_to_le32(8); | |
2243 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
2244 | (struct crt_twarp_ctxt, Name)); | |
2245 | buf->ccontext.NameLength = cpu_to_le16(4); | |
2246 | /* SMB2_CREATE_TIMEWARP_TOKEN is "TWrp" */ | |
2247 | buf->Name[0] = 'T'; | |
2248 | buf->Name[1] = 'W'; | |
2249 | buf->Name[2] = 'r'; | |
2250 | buf->Name[3] = 'p'; | |
2251 | buf->Timestamp = cpu_to_le64(timewarp); | |
2252 | return buf; | |
2253 | } | |
2254 | ||
2255 | /* See MS-SMB2 2.2.13.2.7 */ | |
2256 | static int | |
2257 | add_twarp_context(struct kvec *iov, unsigned int *num_iovec, __u64 timewarp) | |
2258 | { | |
2259 | struct smb2_create_req *req = iov[0].iov_base; | |
2260 | unsigned int num = *num_iovec; | |
2261 | ||
2262 | iov[num].iov_base = create_twarp_buf(timewarp); | |
2263 | if (iov[num].iov_base == NULL) | |
2264 | return -ENOMEM; | |
2265 | iov[num].iov_len = sizeof(struct crt_twarp_ctxt); | |
2266 | if (!req->CreateContextsOffset) | |
2267 | req->CreateContextsOffset = cpu_to_le32( | |
2268 | sizeof(struct smb2_create_req) + | |
2269 | iov[num - 1].iov_len); | |
2270 | le32_add_cpu(&req->CreateContextsLength, sizeof(struct crt_twarp_ctxt)); | |
2271 | *num_iovec = num + 1; | |
2272 | return 0; | |
2273 | } | |
2274 | ||
fdef665b SF |
2275 | /* See MS-SMB2 2.2.13.2.2 and MS-DTYP 2.4.6 */ |
2276 | static struct crt_sd_ctxt * | |
2277 | create_sd_buf(umode_t mode, unsigned int *len) | |
2278 | { | |
2279 | struct crt_sd_ctxt *buf; | |
2280 | struct cifs_ace *pace; | |
2281 | unsigned int sdlen, acelen; | |
2282 | ||
643fbcee SF |
2283 | *len = roundup(sizeof(struct crt_sd_ctxt) + sizeof(struct cifs_ace) * 2, |
2284 | 8); | |
fdef665b SF |
2285 | buf = kzalloc(*len, GFP_KERNEL); |
2286 | if (buf == NULL) | |
2287 | return buf; | |
2288 | ||
2289 | sdlen = sizeof(struct smb3_sd) + sizeof(struct smb3_acl) + | |
643fbcee | 2290 | 2 * sizeof(struct cifs_ace); |
fdef665b SF |
2291 | |
2292 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
2293 | (struct crt_sd_ctxt, sd)); | |
2294 | buf->ccontext.DataLength = cpu_to_le32(sdlen); | |
2295 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
2296 | (struct crt_sd_ctxt, Name)); | |
2297 | buf->ccontext.NameLength = cpu_to_le16(4); | |
2298 | /* SMB2_CREATE_SD_BUFFER_TOKEN is "SecD" */ | |
2299 | buf->Name[0] = 'S'; | |
2300 | buf->Name[1] = 'e'; | |
2301 | buf->Name[2] = 'c'; | |
2302 | buf->Name[3] = 'D'; | |
2303 | buf->sd.Revision = 1; /* Must be one see MS-DTYP 2.4.6 */ | |
2304 | /* | |
2305 | * ACL is "self relative" ie ACL is stored in contiguous block of memory | |
2306 | * and "DP" ie the DACL is present | |
2307 | */ | |
2308 | buf->sd.Control = cpu_to_le16(ACL_CONTROL_SR | ACL_CONTROL_DP); | |
2309 | ||
2310 | /* offset owner, group and Sbz1 and SACL are all zero */ | |
2311 | buf->sd.OffsetDacl = cpu_to_le32(sizeof(struct smb3_sd)); | |
2312 | buf->acl.AclRevision = ACL_REVISION; /* See 2.4.4.1 of MS-DTYP */ | |
2313 | ||
2314 | /* create one ACE to hold the mode embedded in reserved special SID */ | |
2315 | pace = (struct cifs_ace *)(sizeof(struct crt_sd_ctxt) + (char *)buf); | |
2316 | acelen = setup_special_mode_ACE(pace, (__u64)mode); | |
643fbcee SF |
2317 | /* and one more ACE to allow access for authenticated users */ |
2318 | pace = (struct cifs_ace *)(acelen + (sizeof(struct crt_sd_ctxt) + | |
2319 | (char *)buf)); | |
2320 | acelen += setup_authusers_ACE(pace); | |
fdef665b | 2321 | buf->acl.AclSize = cpu_to_le16(sizeof(struct cifs_acl) + acelen); |
643fbcee | 2322 | buf->acl.AceCount = cpu_to_le16(2); |
fdef665b SF |
2323 | return buf; |
2324 | } | |
2325 | ||
2326 | static int | |
2327 | add_sd_context(struct kvec *iov, unsigned int *num_iovec, umode_t mode) | |
2328 | { | |
2329 | struct smb2_create_req *req = iov[0].iov_base; | |
2330 | unsigned int num = *num_iovec; | |
2331 | unsigned int len = 0; | |
2332 | ||
2333 | iov[num].iov_base = create_sd_buf(mode, &len); | |
2334 | if (iov[num].iov_base == NULL) | |
2335 | return -ENOMEM; | |
2336 | iov[num].iov_len = len; | |
2337 | if (!req->CreateContextsOffset) | |
2338 | req->CreateContextsOffset = cpu_to_le32( | |
2339 | sizeof(struct smb2_create_req) + | |
2340 | iov[num - 1].iov_len); | |
2341 | le32_add_cpu(&req->CreateContextsLength, len); | |
2342 | *num_iovec = num + 1; | |
2343 | return 0; | |
2344 | } | |
2345 | ||
ff2a09e9 SF |
2346 | static struct crt_query_id_ctxt * |
2347 | create_query_id_buf(void) | |
2348 | { | |
2349 | struct crt_query_id_ctxt *buf; | |
2350 | ||
2351 | buf = kzalloc(sizeof(struct crt_query_id_ctxt), GFP_KERNEL); | |
2352 | if (!buf) | |
2353 | return NULL; | |
2354 | ||
2355 | buf->ccontext.DataOffset = cpu_to_le16(0); | |
2356 | buf->ccontext.DataLength = cpu_to_le32(0); | |
2357 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
2358 | (struct crt_query_id_ctxt, Name)); | |
2359 | buf->ccontext.NameLength = cpu_to_le16(4); | |
2360 | /* SMB2_CREATE_QUERY_ON_DISK_ID is "QFid" */ | |
2361 | buf->Name[0] = 'Q'; | |
2362 | buf->Name[1] = 'F'; | |
2363 | buf->Name[2] = 'i'; | |
2364 | buf->Name[3] = 'd'; | |
2365 | return buf; | |
2366 | } | |
2367 | ||
2368 | /* See MS-SMB2 2.2.13.2.9 */ | |
2369 | static int | |
2370 | add_query_id_context(struct kvec *iov, unsigned int *num_iovec) | |
2371 | { | |
2372 | struct smb2_create_req *req = iov[0].iov_base; | |
2373 | unsigned int num = *num_iovec; | |
2374 | ||
2375 | iov[num].iov_base = create_query_id_buf(); | |
2376 | if (iov[num].iov_base == NULL) | |
2377 | return -ENOMEM; | |
2378 | iov[num].iov_len = sizeof(struct crt_query_id_ctxt); | |
2379 | if (!req->CreateContextsOffset) | |
2380 | req->CreateContextsOffset = cpu_to_le32( | |
2381 | sizeof(struct smb2_create_req) + | |
2382 | iov[num - 1].iov_len); | |
2383 | le32_add_cpu(&req->CreateContextsLength, sizeof(struct crt_query_id_ctxt)); | |
2384 | *num_iovec = num + 1; | |
2385 | return 0; | |
2386 | } | |
2387 | ||
f0712928 AA |
2388 | static int |
2389 | alloc_path_with_tree_prefix(__le16 **out_path, int *out_size, int *out_len, | |
2390 | const char *treename, const __le16 *path) | |
2391 | { | |
2392 | int treename_len, path_len; | |
2393 | struct nls_table *cp; | |
2394 | const __le16 sep[] = {cpu_to_le16('\\'), cpu_to_le16(0x0000)}; | |
2395 | ||
2396 | /* | |
2397 | * skip leading "\\" | |
2398 | */ | |
2399 | treename_len = strlen(treename); | |
2400 | if (treename_len < 2 || !(treename[0] == '\\' && treename[1] == '\\')) | |
2401 | return -EINVAL; | |
2402 | ||
2403 | treename += 2; | |
2404 | treename_len -= 2; | |
2405 | ||
2406 | path_len = UniStrnlen((wchar_t *)path, PATH_MAX); | |
2407 | ||
2408 | /* | |
2409 | * make room for one path separator between the treename and | |
2410 | * path | |
2411 | */ | |
2412 | *out_len = treename_len + 1 + path_len; | |
2413 | ||
2414 | /* | |
2415 | * final path needs to be null-terminated UTF16 with a | |
2416 | * size aligned to 8 | |
2417 | */ | |
2418 | ||
2419 | *out_size = roundup((*out_len+1)*2, 8); | |
2420 | *out_path = kzalloc(*out_size, GFP_KERNEL); | |
2421 | if (!*out_path) | |
2422 | return -ENOMEM; | |
2423 | ||
2424 | cp = load_nls_default(); | |
2425 | cifs_strtoUTF16(*out_path, treename, treename_len, cp); | |
2426 | UniStrcat(*out_path, sep); | |
2427 | UniStrcat(*out_path, path); | |
2428 | unload_nls(cp); | |
2429 | ||
2430 | return 0; | |
2431 | } | |
2432 | ||
bea851b8 SF |
2433 | int smb311_posix_mkdir(const unsigned int xid, struct inode *inode, |
2434 | umode_t mode, struct cifs_tcon *tcon, | |
2435 | const char *full_path, | |
2436 | struct cifs_sb_info *cifs_sb) | |
2437 | { | |
2438 | struct smb_rqst rqst; | |
2439 | struct smb2_create_req *req; | |
256b4c3f | 2440 | struct smb2_create_rsp *rsp = NULL; |
bea851b8 SF |
2441 | struct cifs_ses *ses = tcon->ses; |
2442 | struct kvec iov[3]; /* make sure at least one for each open context */ | |
2443 | struct kvec rsp_iov = {NULL, 0}; | |
2444 | int resp_buftype; | |
2445 | int uni_path_len; | |
2446 | __le16 *copy_path = NULL; | |
2447 | int copy_size; | |
2448 | int rc = 0; | |
2449 | unsigned int n_iov = 2; | |
2450 | __u32 file_attributes = 0; | |
2451 | char *pc_buf = NULL; | |
2452 | int flags = 0; | |
2453 | unsigned int total_len; | |
256b4c3f | 2454 | __le16 *utf16_path = NULL; |
bea851b8 SF |
2455 | |
2456 | cifs_dbg(FYI, "mkdir\n"); | |
2457 | ||
256b4c3f AA |
2458 | /* resource #1: path allocation */ |
2459 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); | |
2460 | if (!utf16_path) | |
2461 | return -ENOMEM; | |
2462 | ||
29cbfa1b | 2463 | if (!ses || !(ses->server)) { |
256b4c3f AA |
2464 | rc = -EIO; |
2465 | goto err_free_path; | |
2466 | } | |
bea851b8 | 2467 | |
256b4c3f | 2468 | /* resource #2: request */ |
bea851b8 | 2469 | rc = smb2_plain_req_init(SMB2_CREATE, tcon, (void **) &req, &total_len); |
bea851b8 | 2470 | if (rc) |
256b4c3f AA |
2471 | goto err_free_path; |
2472 | ||
bea851b8 SF |
2473 | |
2474 | if (smb3_encryption_required(tcon)) | |
2475 | flags |= CIFS_TRANSFORM_REQ; | |
2476 | ||
bea851b8 SF |
2477 | req->ImpersonationLevel = IL_IMPERSONATION; |
2478 | req->DesiredAccess = cpu_to_le32(FILE_WRITE_ATTRIBUTES); | |
2479 | /* File attributes ignored on open (used in create though) */ | |
2480 | req->FileAttributes = cpu_to_le32(file_attributes); | |
2481 | req->ShareAccess = FILE_SHARE_ALL_LE; | |
2482 | req->CreateDisposition = cpu_to_le32(FILE_CREATE); | |
2483 | req->CreateOptions = cpu_to_le32(CREATE_NOT_FILE); | |
2484 | ||
2485 | iov[0].iov_base = (char *)req; | |
2486 | /* -1 since last byte is buf[0] which is sent below (path) */ | |
2487 | iov[0].iov_len = total_len - 1; | |
2488 | ||
2489 | req->NameOffset = cpu_to_le16(sizeof(struct smb2_create_req)); | |
2490 | ||
2491 | /* [MS-SMB2] 2.2.13 NameOffset: | |
2492 | * If SMB2_FLAGS_DFS_OPERATIONS is set in the Flags field of | |
2493 | * the SMB2 header, the file name includes a prefix that will | |
2494 | * be processed during DFS name normalization as specified in | |
2495 | * section 3.3.5.9. Otherwise, the file name is relative to | |
2496 | * the share that is identified by the TreeId in the SMB2 | |
2497 | * header. | |
2498 | */ | |
2499 | if (tcon->share_flags & SHI1005_FLAGS_DFS) { | |
2500 | int name_len; | |
2501 | ||
2502 | req->sync_hdr.Flags |= SMB2_FLAGS_DFS_OPERATIONS; | |
2503 | rc = alloc_path_with_tree_prefix(©_path, ©_size, | |
2504 | &name_len, | |
256b4c3f AA |
2505 | tcon->treeName, utf16_path); |
2506 | if (rc) | |
2507 | goto err_free_req; | |
2508 | ||
bea851b8 SF |
2509 | req->NameLength = cpu_to_le16(name_len * 2); |
2510 | uni_path_len = copy_size; | |
256b4c3f AA |
2511 | /* free before overwriting resource */ |
2512 | kfree(utf16_path); | |
2513 | utf16_path = copy_path; | |
bea851b8 | 2514 | } else { |
256b4c3f | 2515 | uni_path_len = (2 * UniStrnlen((wchar_t *)utf16_path, PATH_MAX)) + 2; |
bea851b8 SF |
2516 | /* MUST set path len (NameLength) to 0 opening root of share */ |
2517 | req->NameLength = cpu_to_le16(uni_path_len - 2); | |
2518 | if (uni_path_len % 8 != 0) { | |
2519 | copy_size = roundup(uni_path_len, 8); | |
2520 | copy_path = kzalloc(copy_size, GFP_KERNEL); | |
2521 | if (!copy_path) { | |
256b4c3f AA |
2522 | rc = -ENOMEM; |
2523 | goto err_free_req; | |
bea851b8 | 2524 | } |
256b4c3f | 2525 | memcpy((char *)copy_path, (const char *)utf16_path, |
bea851b8 SF |
2526 | uni_path_len); |
2527 | uni_path_len = copy_size; | |
256b4c3f AA |
2528 | /* free before overwriting resource */ |
2529 | kfree(utf16_path); | |
2530 | utf16_path = copy_path; | |
bea851b8 SF |
2531 | } |
2532 | } | |
2533 | ||
2534 | iov[1].iov_len = uni_path_len; | |
256b4c3f | 2535 | iov[1].iov_base = utf16_path; |
bea851b8 SF |
2536 | req->RequestedOplockLevel = SMB2_OPLOCK_LEVEL_NONE; |
2537 | ||
2538 | if (tcon->posix_extensions) { | |
256b4c3f | 2539 | /* resource #3: posix buf */ |
bea851b8 | 2540 | rc = add_posix_context(iov, &n_iov, mode); |
256b4c3f AA |
2541 | if (rc) |
2542 | goto err_free_req; | |
bea851b8 SF |
2543 | pc_buf = iov[n_iov-1].iov_base; |
2544 | } | |
2545 | ||
2546 | ||
2547 | memset(&rqst, 0, sizeof(struct smb_rqst)); | |
2548 | rqst.rq_iov = iov; | |
2549 | rqst.rq_nvec = n_iov; | |
2550 | ||
d2f15428 | 2551 | /* no need to inc num_remote_opens because we close it just below */ |
efe2e9f3 SF |
2552 | trace_smb3_posix_mkdir_enter(xid, tcon->tid, ses->Suid, CREATE_NOT_FILE, |
2553 | FILE_WRITE_ATTRIBUTES); | |
256b4c3f AA |
2554 | /* resource #4: response buffer */ |
2555 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); | |
2556 | if (rc) { | |
bea851b8 SF |
2557 | cifs_stats_fail_inc(tcon, SMB2_CREATE_HE); |
2558 | trace_smb3_posix_mkdir_err(xid, tcon->tid, ses->Suid, | |
256b4c3f AA |
2559 | CREATE_NOT_FILE, |
2560 | FILE_WRITE_ATTRIBUTES, rc); | |
2561 | goto err_free_rsp_buf; | |
2562 | } | |
2563 | ||
2564 | rsp = (struct smb2_create_rsp *)rsp_iov.iov_base; | |
2565 | trace_smb3_posix_mkdir_done(xid, rsp->PersistentFileId, tcon->tid, | |
2566 | ses->Suid, CREATE_NOT_FILE, | |
2567 | FILE_WRITE_ATTRIBUTES); | |
bea851b8 SF |
2568 | |
2569 | SMB2_close(xid, tcon, rsp->PersistentFileId, rsp->VolatileFileId); | |
2570 | ||
2571 | /* Eventually save off posix specific response info and timestaps */ | |
2572 | ||
256b4c3f | 2573 | err_free_rsp_buf: |
bea851b8 | 2574 | free_rsp_buf(resp_buftype, rsp); |
256b4c3f AA |
2575 | kfree(pc_buf); |
2576 | err_free_req: | |
2577 | cifs_small_buf_release(req); | |
2578 | err_free_path: | |
2579 | kfree(utf16_path); | |
bea851b8 | 2580 | return rc; |
bea851b8 | 2581 | } |
bea851b8 | 2582 | |
2503a0db | 2583 | int |
1eb9fb52 RS |
2584 | SMB2_open_init(struct cifs_tcon *tcon, struct smb_rqst *rqst, __u8 *oplock, |
2585 | struct cifs_open_parms *oparms, __le16 *path) | |
2503a0db | 2586 | { |
1eb9fb52 | 2587 | struct TCP_Server_Info *server = tcon->ses->server; |
2503a0db | 2588 | struct smb2_create_req *req; |
da502f7d | 2589 | unsigned int n_iov = 2; |
ca81983f | 2590 | __u32 file_attributes = 0; |
1eb9fb52 RS |
2591 | int copy_size; |
2592 | int uni_path_len; | |
4f33bc35 | 2593 | unsigned int total_len; |
1eb9fb52 RS |
2594 | struct kvec *iov = rqst->rq_iov; |
2595 | __le16 *copy_path; | |
2596 | int rc; | |
2503a0db | 2597 | |
4f33bc35 | 2598 | rc = smb2_plain_req_init(SMB2_CREATE, tcon, (void **) &req, &total_len); |
2503a0db PS |
2599 | if (rc) |
2600 | return rc; | |
2601 | ||
1eb9fb52 RS |
2602 | iov[0].iov_base = (char *)req; |
2603 | /* -1 since last byte is buf[0] which is sent below (path) */ | |
2604 | iov[0].iov_len = total_len - 1; | |
7fb8986e | 2605 | |
064f6047 | 2606 | if (oparms->create_options & CREATE_OPTION_READONLY) |
ca81983f | 2607 | file_attributes |= ATTR_READONLY; |
db8b631d SF |
2608 | if (oparms->create_options & CREATE_OPTION_SPECIAL) |
2609 | file_attributes |= ATTR_SYSTEM; | |
ca81983f | 2610 | |
2503a0db | 2611 | req->ImpersonationLevel = IL_IMPERSONATION; |
064f6047 | 2612 | req->DesiredAccess = cpu_to_le32(oparms->desired_access); |
2503a0db PS |
2613 | /* File attributes ignored on open (used in create though) */ |
2614 | req->FileAttributes = cpu_to_le32(file_attributes); | |
2615 | req->ShareAccess = FILE_SHARE_ALL_LE; | |
c3ca78e2 | 2616 | |
064f6047 PS |
2617 | req->CreateDisposition = cpu_to_le32(oparms->disposition); |
2618 | req->CreateOptions = cpu_to_le32(oparms->create_options & CREATE_OPTIONS_MASK); | |
4f33bc35 | 2619 | req->NameOffset = cpu_to_le16(sizeof(struct smb2_create_req)); |
f0712928 AA |
2620 | |
2621 | /* [MS-SMB2] 2.2.13 NameOffset: | |
2622 | * If SMB2_FLAGS_DFS_OPERATIONS is set in the Flags field of | |
2623 | * the SMB2 header, the file name includes a prefix that will | |
2624 | * be processed during DFS name normalization as specified in | |
2625 | * section 3.3.5.9. Otherwise, the file name is relative to | |
2626 | * the share that is identified by the TreeId in the SMB2 | |
2627 | * header. | |
2628 | */ | |
2629 | if (tcon->share_flags & SHI1005_FLAGS_DFS) { | |
2630 | int name_len; | |
2631 | ||
4f33bc35 | 2632 | req->sync_hdr.Flags |= SMB2_FLAGS_DFS_OPERATIONS; |
f0712928 AA |
2633 | rc = alloc_path_with_tree_prefix(©_path, ©_size, |
2634 | &name_len, | |
2635 | tcon->treeName, path); | |
1eb9fb52 | 2636 | if (rc) |
f0712928 AA |
2637 | return rc; |
2638 | req->NameLength = cpu_to_le16(name_len * 2); | |
59aa3718 PS |
2639 | uni_path_len = copy_size; |
2640 | path = copy_path; | |
f0712928 AA |
2641 | } else { |
2642 | uni_path_len = (2 * UniStrnlen((wchar_t *)path, PATH_MAX)) + 2; | |
2643 | /* MUST set path len (NameLength) to 0 opening root of share */ | |
2644 | req->NameLength = cpu_to_le16(uni_path_len - 2); | |
1eb9fb52 RS |
2645 | copy_size = uni_path_len; |
2646 | if (copy_size % 8 != 0) | |
2647 | copy_size = roundup(copy_size, 8); | |
2648 | copy_path = kzalloc(copy_size, GFP_KERNEL); | |
2649 | if (!copy_path) | |
2650 | return -ENOMEM; | |
2651 | memcpy((char *)copy_path, (const char *)path, | |
2652 | uni_path_len); | |
2653 | uni_path_len = copy_size; | |
2654 | path = copy_path; | |
2503a0db PS |
2655 | } |
2656 | ||
59aa3718 PS |
2657 | iov[1].iov_len = uni_path_len; |
2658 | iov[1].iov_base = path; | |
59aa3718 | 2659 | |
3e7a02d4 | 2660 | if ((!server->oplocks) || (tcon->no_lease)) |
b8c32dbb PS |
2661 | *oplock = SMB2_OPLOCK_LEVEL_NONE; |
2662 | ||
a41a28bd | 2663 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LEASING) || |
b8c32dbb PS |
2664 | *oplock == SMB2_OPLOCK_LEVEL_NONE) |
2665 | req->RequestedOplockLevel = *oplock; | |
f8015683 SF |
2666 | else if (!(server->capabilities & SMB2_GLOBAL_CAP_DIRECTORY_LEASING) && |
2667 | (oparms->create_options & CREATE_NOT_FILE)) | |
2668 | req->RequestedOplockLevel = *oplock; /* no srv lease support */ | |
b8c32dbb | 2669 | else { |
729c0c9d SB |
2670 | rc = add_lease_context(server, iov, &n_iov, |
2671 | oparms->fid->lease_key, oplock); | |
1eb9fb52 | 2672 | if (rc) |
d22cbfec | 2673 | return rc; |
b8c32dbb PS |
2674 | } |
2675 | ||
63eb3def PS |
2676 | if (*oplock == SMB2_OPLOCK_LEVEL_BATCH) { |
2677 | /* need to set Next field of lease context if we request it */ | |
a41a28bd | 2678 | if (server->capabilities & SMB2_GLOBAL_CAP_LEASING) { |
63eb3def | 2679 | struct create_context *ccontext = |
da502f7d | 2680 | (struct create_context *)iov[n_iov-1].iov_base; |
1c46943f | 2681 | ccontext->Next = |
a41a28bd | 2682 | cpu_to_le32(server->vals->create_lease_size); |
63eb3def | 2683 | } |
b56eae4d | 2684 | |
da502f7d | 2685 | rc = add_durable_context(iov, &n_iov, oparms, |
b56eae4d | 2686 | tcon->use_persistent); |
1eb9fb52 | 2687 | if (rc) |
63eb3def | 2688 | return rc; |
63eb3def PS |
2689 | } |
2690 | ||
ce558b0e SF |
2691 | if (tcon->posix_extensions) { |
2692 | if (n_iov > 2) { | |
2693 | struct create_context *ccontext = | |
2694 | (struct create_context *)iov[n_iov-1].iov_base; | |
2695 | ccontext->Next = | |
2696 | cpu_to_le32(iov[n_iov-1].iov_len); | |
2697 | } | |
2698 | ||
2699 | rc = add_posix_context(iov, &n_iov, oparms->mode); | |
1eb9fb52 | 2700 | if (rc) |
ce558b0e | 2701 | return rc; |
ce558b0e | 2702 | } |
ce558b0e | 2703 | |
cdeaf9d0 SF |
2704 | if (tcon->snapshot_time) { |
2705 | cifs_dbg(FYI, "adding snapshot context\n"); | |
2706 | if (n_iov > 2) { | |
2707 | struct create_context *ccontext = | |
2708 | (struct create_context *)iov[n_iov-1].iov_base; | |
2709 | ccontext->Next = | |
2710 | cpu_to_le32(iov[n_iov-1].iov_len); | |
2711 | } | |
2712 | ||
2713 | rc = add_twarp_context(iov, &n_iov, tcon->snapshot_time); | |
2714 | if (rc) | |
2715 | return rc; | |
2716 | } | |
2717 | ||
fdef665b | 2718 | if ((oparms->disposition != FILE_OPEN) && |
231e2a0b SF |
2719 | (oparms->cifs_sb) && |
2720 | (oparms->cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MODE_FROM_SID) && | |
d0959b08 | 2721 | (oparms->mode != ACL_NO_MODE)) { |
c3ca78e2 SF |
2722 | if (n_iov > 2) { |
2723 | struct create_context *ccontext = | |
2724 | (struct create_context *)iov[n_iov-1].iov_base; | |
2725 | ccontext->Next = | |
2726 | cpu_to_le32(iov[n_iov-1].iov_len); | |
2727 | } | |
2728 | ||
fdef665b SF |
2729 | cifs_dbg(FYI, "add sd with mode 0x%x\n", oparms->mode); |
2730 | rc = add_sd_context(iov, &n_iov, oparms->mode); | |
c3ca78e2 SF |
2731 | if (rc) |
2732 | return rc; | |
2733 | } | |
2734 | ||
ff2a09e9 SF |
2735 | if (n_iov > 2) { |
2736 | struct create_context *ccontext = | |
2737 | (struct create_context *)iov[n_iov-1].iov_base; | |
2738 | ccontext->Next = cpu_to_le32(iov[n_iov-1].iov_len); | |
2739 | } | |
2740 | add_query_id_context(iov, &n_iov); | |
cdeaf9d0 | 2741 | |
1eb9fb52 RS |
2742 | rqst->rq_nvec = n_iov; |
2743 | return 0; | |
2744 | } | |
2745 | ||
2746 | /* rq_iov[0] is the request and is released by cifs_small_buf_release(). | |
2747 | * All other vectors are freed by kfree(). | |
2748 | */ | |
2749 | void | |
2750 | SMB2_open_free(struct smb_rqst *rqst) | |
2751 | { | |
2752 | int i; | |
2753 | ||
32a1fb36 RS |
2754 | if (rqst && rqst->rq_iov) { |
2755 | cifs_small_buf_release(rqst->rq_iov[0].iov_base); | |
2756 | for (i = 1; i < rqst->rq_nvec; i++) | |
2757 | if (rqst->rq_iov[i].iov_base != smb2_padding) | |
2758 | kfree(rqst->rq_iov[i].iov_base); | |
2759 | } | |
1eb9fb52 RS |
2760 | } |
2761 | ||
2762 | int | |
2763 | SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path, | |
2764 | __u8 *oplock, struct smb2_file_all_info *buf, | |
69dda305 | 2765 | struct create_posix_rsp *posix, |
1eb9fb52 RS |
2766 | struct kvec *err_iov, int *buftype) |
2767 | { | |
2768 | struct smb_rqst rqst; | |
2769 | struct smb2_create_rsp *rsp = NULL; | |
2770 | struct TCP_Server_Info *server; | |
2771 | struct cifs_tcon *tcon = oparms->tcon; | |
2772 | struct cifs_ses *ses = tcon->ses; | |
4d8dfafc | 2773 | struct kvec iov[SMB2_CREATE_IOV_SIZE]; |
1eb9fb52 | 2774 | struct kvec rsp_iov = {NULL, 0}; |
ef2298a0 | 2775 | int resp_buftype = CIFS_NO_BUFFER; |
1eb9fb52 RS |
2776 | int rc = 0; |
2777 | int flags = 0; | |
2778 | ||
2779 | cifs_dbg(FYI, "create/open\n"); | |
2780 | if (ses && (ses->server)) | |
2781 | server = ses->server; | |
2782 | else | |
2783 | return -EIO; | |
2784 | ||
2785 | if (smb3_encryption_required(tcon)) | |
2786 | flags |= CIFS_TRANSFORM_REQ; | |
2787 | ||
40eff45b | 2788 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
1eb9fb52 | 2789 | memset(&iov, 0, sizeof(iov)); |
40eff45b | 2790 | rqst.rq_iov = iov; |
4d8dfafc | 2791 | rqst.rq_nvec = SMB2_CREATE_IOV_SIZE; |
1eb9fb52 RS |
2792 | |
2793 | rc = SMB2_open_init(tcon, &rqst, oplock, oparms, path); | |
2794 | if (rc) | |
2795 | goto creat_exit; | |
40eff45b | 2796 | |
efe2e9f3 SF |
2797 | trace_smb3_open_enter(xid, tcon->tid, tcon->ses->Suid, |
2798 | oparms->create_options, oparms->desired_access); | |
2799 | ||
40eff45b | 2800 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, |
4f33bc35 | 2801 | &rsp_iov); |
da502f7d | 2802 | rsp = (struct smb2_create_rsp *)rsp_iov.iov_base; |
2503a0db PS |
2803 | |
2804 | if (rc != 0) { | |
2805 | cifs_stats_fail_inc(tcon, SMB2_CREATE_HE); | |
91cb74f5 RS |
2806 | if (err_iov && rsp) { |
2807 | *err_iov = rsp_iov; | |
9d874c36 | 2808 | *buftype = resp_buftype; |
91cb74f5 RS |
2809 | resp_buftype = CIFS_NO_BUFFER; |
2810 | rsp = NULL; | |
2811 | } | |
28d59363 SF |
2812 | trace_smb3_open_err(xid, tcon->tid, ses->Suid, |
2813 | oparms->create_options, oparms->desired_access, rc); | |
7dcc82c2 SF |
2814 | if (rc == -EREMCHG) { |
2815 | printk_once(KERN_WARNING "server share %s deleted\n", | |
2816 | tcon->treeName); | |
2817 | tcon->need_reconnect = true; | |
2818 | } | |
2503a0db | 2819 | goto creat_exit; |
28d59363 SF |
2820 | } else |
2821 | trace_smb3_open_done(xid, rsp->PersistentFileId, tcon->tid, | |
2822 | ses->Suid, oparms->create_options, | |
2823 | oparms->desired_access); | |
2503a0db | 2824 | |
fae8044c | 2825 | atomic_inc(&tcon->num_remote_opens); |
064f6047 PS |
2826 | oparms->fid->persistent_fid = rsp->PersistentFileId; |
2827 | oparms->fid->volatile_fid = rsp->VolatileFileId; | |
86f740f2 | 2828 | oparms->fid->access = oparms->desired_access; |
dfe33f9a SF |
2829 | #ifdef CONFIG_CIFS_DEBUG2 |
2830 | oparms->fid->mid = le64_to_cpu(rsp->sync_hdr.MessageId); | |
2831 | #endif /* CIFS_DEBUG2 */ | |
f0df737e PS |
2832 | |
2833 | if (buf) { | |
2834 | memcpy(buf, &rsp->CreationTime, 32); | |
2835 | buf->AllocationSize = rsp->AllocationSize; | |
2836 | buf->EndOfFile = rsp->EndofFile; | |
2837 | buf->Attributes = rsp->FileAttributes; | |
2838 | buf->NumberOfLinks = cpu_to_le32(1); | |
2839 | buf->DeletePending = 0; | |
2840 | } | |
2e44b288 | 2841 | |
89a5bfa3 SF |
2842 | |
2843 | smb2_parse_contexts(server, rsp, &oparms->fid->epoch, | |
69dda305 | 2844 | oparms->fid->lease_key, oplock, buf, posix); |
2503a0db | 2845 | creat_exit: |
1eb9fb52 | 2846 | SMB2_open_free(&rqst); |
2503a0db PS |
2847 | free_rsp_buf(resp_buftype, rsp); |
2848 | return rc; | |
2849 | } | |
2850 | ||
4a72dafa | 2851 | int |
ccdc77a3 RS |
2852 | SMB2_ioctl_init(struct cifs_tcon *tcon, struct smb_rqst *rqst, |
2853 | u64 persistent_fid, u64 volatile_fid, u32 opcode, | |
153322f7 SF |
2854 | bool is_fsctl, char *in_data, u32 indatalen, |
2855 | __u32 max_response_size) | |
4a72dafa SF |
2856 | { |
2857 | struct smb2_ioctl_req *req; | |
ccdc77a3 | 2858 | struct kvec *iov = rqst->rq_iov; |
97754680 | 2859 | unsigned int total_len; |
ccdc77a3 | 2860 | int rc; |
2c87d6a9 | 2861 | char *in_data_buf; |
4a72dafa | 2862 | |
84a1f5b1 | 2863 | rc = smb2_ioctl_req_init(opcode, tcon, (void **) &req, &total_len); |
4a72dafa SF |
2864 | if (rc) |
2865 | return rc; | |
2866 | ||
2c87d6a9 LL |
2867 | if (indatalen) { |
2868 | /* | |
2869 | * indatalen is usually small at a couple of bytes max, so | |
2870 | * just allocate through generic pool | |
2871 | */ | |
d81f0974 | 2872 | in_data_buf = kmemdup(in_data, indatalen, GFP_NOFS); |
2c87d6a9 LL |
2873 | if (!in_data_buf) { |
2874 | cifs_small_buf_release(req); | |
2875 | return -ENOMEM; | |
2876 | } | |
2c87d6a9 LL |
2877 | } |
2878 | ||
4a72dafa SF |
2879 | req->CtlCode = cpu_to_le32(opcode); |
2880 | req->PersistentFileId = persistent_fid; | |
2881 | req->VolatileFileId = volatile_fid; | |
2882 | ||
ccdc77a3 RS |
2883 | iov[0].iov_base = (char *)req; |
2884 | /* | |
2885 | * If no input data, the size of ioctl struct in | |
2886 | * protocol spec still includes a 1 byte data buffer, | |
2887 | * but if input data passed to ioctl, we do not | |
2888 | * want to double count this, so we do not send | |
2889 | * the dummy one byte of data in iovec[0] if sending | |
2890 | * input data (in iovec[1]). | |
2891 | */ | |
4a72dafa SF |
2892 | if (indatalen) { |
2893 | req->InputCount = cpu_to_le32(indatalen); | |
2894 | /* do not set InputOffset if no input data */ | |
2895 | req->InputOffset = | |
97754680 | 2896 | cpu_to_le32(offsetof(struct smb2_ioctl_req, Buffer)); |
ccdc77a3 RS |
2897 | rqst->rq_nvec = 2; |
2898 | iov[0].iov_len = total_len - 1; | |
2c87d6a9 | 2899 | iov[1].iov_base = in_data_buf; |
4a72dafa | 2900 | iov[1].iov_len = indatalen; |
ccdc77a3 RS |
2901 | } else { |
2902 | rqst->rq_nvec = 1; | |
2903 | iov[0].iov_len = total_len; | |
2904 | } | |
4a72dafa SF |
2905 | |
2906 | req->OutputOffset = 0; | |
2907 | req->OutputCount = 0; /* MBZ */ | |
2908 | ||
2909 | /* | |
153322f7 SF |
2910 | * In most cases max_response_size is set to 16K (CIFSMaxBufSize) |
2911 | * We Could increase default MaxOutputResponse, but that could require | |
2912 | * more credits. Windows typically sets this smaller, but for some | |
4a72dafa SF |
2913 | * ioctls it may be useful to allow server to send more. No point |
2914 | * limiting what the server can send as long as fits in one credit | |
153322f7 SF |
2915 | * We can not handle more than CIFS_MAX_BUF_SIZE yet but may want |
2916 | * to increase this limit up in the future. | |
2917 | * Note that for snapshot queries that servers like Azure expect that | |
2918 | * the first query be minimal size (and just used to get the number/size | |
2919 | * of previous versions) so response size must be specified as EXACTLY | |
2920 | * sizeof(struct snapshot_array) which is 16 when rounded up to multiple | |
2921 | * of eight bytes. Currently that is the only case where we set max | |
2922 | * response size smaller. | |
4a72dafa | 2923 | */ |
153322f7 | 2924 | req->MaxOutputResponse = cpu_to_le32(max_response_size); |
4a72dafa SF |
2925 | |
2926 | if (is_fsctl) | |
2927 | req->Flags = cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL); | |
2928 | else | |
2929 | req->Flags = 0; | |
2930 | ||
4587eee0 SF |
2931 | /* validate negotiate request must be signed - see MS-SMB2 3.2.5.5 */ |
2932 | if (opcode == FSCTL_VALIDATE_NEGOTIATE_INFO) | |
97754680 | 2933 | req->sync_hdr.Flags |= SMB2_FLAGS_SIGNED; |
4a72dafa | 2934 | |
ccdc77a3 RS |
2935 | return 0; |
2936 | } | |
2937 | ||
2938 | void | |
2939 | SMB2_ioctl_free(struct smb_rqst *rqst) | |
2940 | { | |
6457c20e | 2941 | int i; |
2c87d6a9 | 2942 | if (rqst && rqst->rq_iov) { |
ccdc77a3 | 2943 | cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */ |
6457c20e MZ |
2944 | for (i = 1; i < rqst->rq_nvec; i++) |
2945 | if (rqst->rq_iov[i].iov_base != smb2_padding) | |
2946 | kfree(rqst->rq_iov[i].iov_base); | |
2c87d6a9 | 2947 | } |
ccdc77a3 RS |
2948 | } |
2949 | ||
153322f7 | 2950 | |
ccdc77a3 RS |
2951 | /* |
2952 | * SMB2 IOCTL is used for both IOCTLs and FSCTLs | |
2953 | */ | |
2954 | int | |
2955 | SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, | |
2956 | u64 volatile_fid, u32 opcode, bool is_fsctl, | |
153322f7 | 2957 | char *in_data, u32 indatalen, u32 max_out_data_len, |
ccdc77a3 RS |
2958 | char **out_data, u32 *plen /* returned data len */) |
2959 | { | |
2960 | struct smb_rqst rqst; | |
2961 | struct smb2_ioctl_rsp *rsp = NULL; | |
2962 | struct cifs_ses *ses; | |
72c419d9 | 2963 | struct kvec iov[SMB2_IOCTL_IOV_SIZE]; |
ccdc77a3 RS |
2964 | struct kvec rsp_iov = {NULL, 0}; |
2965 | int resp_buftype = CIFS_NO_BUFFER; | |
2966 | int rc = 0; | |
2967 | int flags = 0; | |
afe6f653 | 2968 | struct TCP_Server_Info *server; |
ccdc77a3 RS |
2969 | |
2970 | cifs_dbg(FYI, "SMB2 IOCTL\n"); | |
2971 | ||
2972 | if (out_data != NULL) | |
2973 | *out_data = NULL; | |
2974 | ||
2975 | /* zero out returned data len, in case of error */ | |
2976 | if (plen) | |
2977 | *plen = 0; | |
2978 | ||
2979 | if (tcon) | |
2980 | ses = tcon->ses; | |
2981 | else | |
2982 | return -EIO; | |
2983 | ||
ac6ad7a8 CIK |
2984 | if (!ses) |
2985 | return -EIO; | |
afe6f653 | 2986 | server = ses->server; |
ac6ad7a8 | 2987 | if (!server) |
ccdc77a3 RS |
2988 | return -EIO; |
2989 | ||
2990 | if (smb3_encryption_required(tcon)) | |
2991 | flags |= CIFS_TRANSFORM_REQ; | |
2992 | ||
40eff45b | 2993 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
ccdc77a3 | 2994 | memset(&iov, 0, sizeof(iov)); |
40eff45b | 2995 | rqst.rq_iov = iov; |
72c419d9 | 2996 | rqst.rq_nvec = SMB2_IOCTL_IOV_SIZE; |
ccdc77a3 | 2997 | |
153322f7 SF |
2998 | rc = SMB2_ioctl_init(tcon, &rqst, persistent_fid, volatile_fid, opcode, |
2999 | is_fsctl, in_data, indatalen, max_out_data_len); | |
ccdc77a3 RS |
3000 | if (rc) |
3001 | goto ioctl_exit; | |
40eff45b RS |
3002 | |
3003 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, | |
97754680 | 3004 | &rsp_iov); |
da502f7d | 3005 | rsp = (struct smb2_ioctl_rsp *)rsp_iov.iov_base; |
4a72dafa | 3006 | |
eccb4422 SF |
3007 | if (rc != 0) |
3008 | trace_smb3_fsctl_err(xid, persistent_fid, tcon->tid, | |
3009 | ses->Suid, 0, opcode, rc); | |
3010 | ||
2f3ebaba | 3011 | if ((rc != 0) && (rc != -EINVAL) && (rc != -E2BIG)) { |
8e353106 | 3012 | cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE); |
4a72dafa | 3013 | goto ioctl_exit; |
9bf0c9cd SF |
3014 | } else if (rc == -EINVAL) { |
3015 | if ((opcode != FSCTL_SRV_COPYCHUNK_WRITE) && | |
3016 | (opcode != FSCTL_SRV_COPYCHUNK)) { | |
8e353106 | 3017 | cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE); |
9bf0c9cd SF |
3018 | goto ioctl_exit; |
3019 | } | |
2f3ebaba RS |
3020 | } else if (rc == -E2BIG) { |
3021 | if (opcode != FSCTL_QUERY_ALLOCATED_RANGES) { | |
3022 | cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE); | |
3023 | goto ioctl_exit; | |
3024 | } | |
4a72dafa SF |
3025 | } |
3026 | ||
3027 | /* check if caller wants to look at return data or just return rc */ | |
3028 | if ((plen == NULL) || (out_data == NULL)) | |
3029 | goto ioctl_exit; | |
3030 | ||
3031 | *plen = le32_to_cpu(rsp->OutputCount); | |
3032 | ||
3033 | /* We check for obvious errors in the output buffer length and offset */ | |
3034 | if (*plen == 0) | |
3035 | goto ioctl_exit; /* server returned no data */ | |
2d204ee9 | 3036 | else if (*plen > rsp_iov.iov_len || *plen > 0xFF00) { |
3175eb9b | 3037 | cifs_tcon_dbg(VFS, "srv returned invalid ioctl length: %d\n", *plen); |
4a72dafa SF |
3038 | *plen = 0; |
3039 | rc = -EIO; | |
3040 | goto ioctl_exit; | |
3041 | } | |
3042 | ||
2d204ee9 | 3043 | if (rsp_iov.iov_len - *plen < le32_to_cpu(rsp->OutputOffset)) { |
3175eb9b | 3044 | cifs_tcon_dbg(VFS, "Malformed ioctl resp: len %d offset %d\n", *plen, |
4a72dafa SF |
3045 | le32_to_cpu(rsp->OutputOffset)); |
3046 | *plen = 0; | |
3047 | rc = -EIO; | |
3048 | goto ioctl_exit; | |
3049 | } | |
3050 | ||
d034feeb Y |
3051 | *out_data = kmemdup((char *)rsp + le32_to_cpu(rsp->OutputOffset), |
3052 | *plen, GFP_KERNEL); | |
4a72dafa SF |
3053 | if (*out_data == NULL) { |
3054 | rc = -ENOMEM; | |
3055 | goto ioctl_exit; | |
3056 | } | |
3057 | ||
4a72dafa | 3058 | ioctl_exit: |
ccdc77a3 | 3059 | SMB2_ioctl_free(&rqst); |
4a72dafa SF |
3060 | free_rsp_buf(resp_buftype, rsp); |
3061 | return rc; | |
3062 | } | |
3063 | ||
64a5cfa6 SF |
3064 | /* |
3065 | * Individual callers to ioctl worker function follow | |
3066 | */ | |
3067 | ||
3068 | int | |
3069 | SMB2_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
3070 | u64 persistent_fid, u64 volatile_fid) | |
3071 | { | |
3072 | int rc; | |
64a5cfa6 SF |
3073 | struct compress_ioctl fsctl_input; |
3074 | char *ret_data = NULL; | |
3075 | ||
3076 | fsctl_input.CompressionState = | |
bc09d141 | 3077 | cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); |
64a5cfa6 SF |
3078 | |
3079 | rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid, | |
3080 | FSCTL_SET_COMPRESSION, true /* is_fsctl */, | |
3081 | (char *)&fsctl_input /* data input */, | |
153322f7 SF |
3082 | 2 /* in data len */, CIFSMaxBufSize /* max out data */, |
3083 | &ret_data /* out data */, NULL); | |
64a5cfa6 SF |
3084 | |
3085 | cifs_dbg(FYI, "set compression rc %d\n", rc); | |
64a5cfa6 SF |
3086 | |
3087 | return rc; | |
3088 | } | |
3089 | ||
8eb4ecfa RS |
3090 | int |
3091 | SMB2_close_init(struct cifs_tcon *tcon, struct smb_rqst *rqst, | |
43f8a6a7 | 3092 | u64 persistent_fid, u64 volatile_fid, bool query_attrs) |
8eb4ecfa RS |
3093 | { |
3094 | struct smb2_close_req *req; | |
3095 | struct kvec *iov = rqst->rq_iov; | |
3096 | unsigned int total_len; | |
3097 | int rc; | |
3098 | ||
3099 | rc = smb2_plain_req_init(SMB2_CLOSE, tcon, (void **) &req, &total_len); | |
3100 | if (rc) | |
3101 | return rc; | |
3102 | ||
3103 | req->PersistentFileId = persistent_fid; | |
3104 | req->VolatileFileId = volatile_fid; | |
43f8a6a7 SF |
3105 | if (query_attrs) |
3106 | req->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB; | |
3107 | else | |
3108 | req->Flags = 0; | |
8eb4ecfa RS |
3109 | iov[0].iov_base = (char *)req; |
3110 | iov[0].iov_len = total_len; | |
3111 | ||
3112 | return 0; | |
3113 | } | |
3114 | ||
3115 | void | |
3116 | SMB2_close_free(struct smb_rqst *rqst) | |
3117 | { | |
32a1fb36 RS |
3118 | if (rqst && rqst->rq_iov) |
3119 | cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */ | |
8eb4ecfa RS |
3120 | } |
3121 | ||
2503a0db | 3122 | int |
43f8a6a7 SF |
3123 | __SMB2_close(const unsigned int xid, struct cifs_tcon *tcon, |
3124 | u64 persistent_fid, u64 volatile_fid, | |
3125 | struct smb2_file_network_open_info *pbuf) | |
2503a0db | 3126 | { |
40eff45b | 3127 | struct smb_rqst rqst; |
8eb4ecfa | 3128 | struct smb2_close_rsp *rsp = NULL; |
2503a0db PS |
3129 | struct cifs_ses *ses = tcon->ses; |
3130 | struct kvec iov[1]; | |
da502f7d | 3131 | struct kvec rsp_iov; |
ef2298a0 | 3132 | int resp_buftype = CIFS_NO_BUFFER; |
2503a0db | 3133 | int rc = 0; |
9e8fae25 | 3134 | int flags = 0; |
43f8a6a7 | 3135 | bool query_attrs = false; |
2503a0db | 3136 | |
f96637be | 3137 | cifs_dbg(FYI, "Close\n"); |
2503a0db | 3138 | |
68a6afa7 | 3139 | if (!ses || !(ses->server)) |
2503a0db PS |
3140 | return -EIO; |
3141 | ||
5a77e75f | 3142 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
3143 | flags |= CIFS_TRANSFORM_REQ; |
3144 | ||
40eff45b | 3145 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
8eb4ecfa | 3146 | memset(&iov, 0, sizeof(iov)); |
40eff45b RS |
3147 | rqst.rq_iov = iov; |
3148 | rqst.rq_nvec = 1; | |
3149 | ||
43f8a6a7 SF |
3150 | /* check if need to ask server to return timestamps in close response */ |
3151 | if (pbuf) | |
3152 | query_attrs = true; | |
3153 | ||
f90f9797 | 3154 | trace_smb3_close_enter(xid, persistent_fid, tcon->tid, ses->Suid); |
43f8a6a7 SF |
3155 | rc = SMB2_close_init(tcon, &rqst, persistent_fid, volatile_fid, |
3156 | query_attrs); | |
8eb4ecfa RS |
3157 | if (rc) |
3158 | goto close_exit; | |
3159 | ||
40eff45b | 3160 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); |
da502f7d | 3161 | rsp = (struct smb2_close_rsp *)rsp_iov.iov_base; |
2503a0db PS |
3162 | |
3163 | if (rc != 0) { | |
d4a029d2 | 3164 | cifs_stats_fail_inc(tcon, SMB2_CLOSE_HE); |
eccb4422 SF |
3165 | trace_smb3_close_err(xid, persistent_fid, tcon->tid, ses->Suid, |
3166 | rc); | |
2503a0db | 3167 | goto close_exit; |
43f8a6a7 | 3168 | } else { |
f90f9797 SF |
3169 | trace_smb3_close_done(xid, persistent_fid, tcon->tid, |
3170 | ses->Suid); | |
43f8a6a7 SF |
3171 | /* |
3172 | * Note that have to subtract 4 since struct network_open_info | |
3173 | * has a final 4 byte pad that close response does not have | |
3174 | */ | |
3175 | if (pbuf) | |
3176 | memcpy(pbuf, (char *)&rsp->CreationTime, sizeof(*pbuf) - 4); | |
3177 | } | |
2503a0db | 3178 | |
fae8044c | 3179 | atomic_dec(&tcon->num_remote_opens); |
2503a0db | 3180 | close_exit: |
8eb4ecfa | 3181 | SMB2_close_free(&rqst); |
2503a0db | 3182 | free_rsp_buf(resp_buftype, rsp); |
9150c3ad PS |
3183 | |
3184 | /* retry close in a worker thread if this one is interrupted */ | |
3185 | if (rc == -EINTR) { | |
9e8fae25 SF |
3186 | int tmp_rc; |
3187 | ||
9150c3ad PS |
3188 | tmp_rc = smb2_handle_cancelled_close(tcon, persistent_fid, |
3189 | volatile_fid); | |
3190 | if (tmp_rc) | |
3191 | cifs_dbg(VFS, "handle cancelled close fid 0x%llx returned error %d\n", | |
3192 | persistent_fid, tmp_rc); | |
3193 | } | |
9150c3ad | 3194 | return rc; |
97ca1762 RS |
3195 | } |
3196 | ||
43f8a6a7 SF |
3197 | int |
3198 | SMB2_close(const unsigned int xid, struct cifs_tcon *tcon, | |
3199 | u64 persistent_fid, u64 volatile_fid) | |
3200 | { | |
3201 | return __SMB2_close(xid, tcon, persistent_fid, volatile_fid, NULL); | |
3202 | } | |
3203 | ||
730928c8 RS |
3204 | int |
3205 | smb2_validate_iov(unsigned int offset, unsigned int buffer_length, | |
3206 | struct kvec *iov, unsigned int min_buf_size) | |
be4cb9e3 | 3207 | { |
c1596ff5 | 3208 | unsigned int smb_len = iov->iov_len; |
1fc6ad2f RS |
3209 | char *end_of_smb = smb_len + (char *)iov->iov_base; |
3210 | char *begin_of_buf = offset + (char *)iov->iov_base; | |
be4cb9e3 PS |
3211 | char *end_of_buf = begin_of_buf + buffer_length; |
3212 | ||
3213 | ||
3214 | if (buffer_length < min_buf_size) { | |
f96637be JP |
3215 | cifs_dbg(VFS, "buffer length %d smaller than minimum size %d\n", |
3216 | buffer_length, min_buf_size); | |
be4cb9e3 PS |
3217 | return -EINVAL; |
3218 | } | |
3219 | ||
3220 | /* check if beyond RFC1001 maximum length */ | |
3221 | if ((smb_len > 0x7FFFFF) || (buffer_length > 0x7FFFFF)) { | |
f96637be JP |
3222 | cifs_dbg(VFS, "buffer length %d or smb length %d too large\n", |
3223 | buffer_length, smb_len); | |
be4cb9e3 PS |
3224 | return -EINVAL; |
3225 | } | |
3226 | ||
3227 | if ((begin_of_buf > end_of_smb) || (end_of_buf > end_of_smb)) { | |
f96637be | 3228 | cifs_dbg(VFS, "illegal server response, bad offset to data\n"); |
be4cb9e3 PS |
3229 | return -EINVAL; |
3230 | } | |
3231 | ||
3232 | return 0; | |
3233 | } | |
3234 | ||
3235 | /* | |
3236 | * If SMB buffer fields are valid, copy into temporary buffer to hold result. | |
3237 | * Caller must free buffer. | |
3238 | */ | |
c5a5f38f RS |
3239 | int |
3240 | smb2_validate_and_copy_iov(unsigned int offset, unsigned int buffer_length, | |
3241 | struct kvec *iov, unsigned int minbufsize, | |
3242 | char *data) | |
be4cb9e3 | 3243 | { |
1fc6ad2f | 3244 | char *begin_of_buf = offset + (char *)iov->iov_base; |
be4cb9e3 PS |
3245 | int rc; |
3246 | ||
3247 | if (!data) | |
3248 | return -EINVAL; | |
3249 | ||
730928c8 | 3250 | rc = smb2_validate_iov(offset, buffer_length, iov, minbufsize); |
be4cb9e3 PS |
3251 | if (rc) |
3252 | return rc; | |
3253 | ||
3254 | memcpy(data, begin_of_buf, buffer_length); | |
3255 | ||
3256 | return 0; | |
3257 | } | |
3258 | ||
296ecbae RS |
3259 | int |
3260 | SMB2_query_info_init(struct cifs_tcon *tcon, struct smb_rqst *rqst, | |
3261 | u64 persistent_fid, u64 volatile_fid, | |
3262 | u8 info_class, u8 info_type, u32 additional_info, | |
f5b05d62 | 3263 | size_t output_len, size_t input_len, void *input) |
be4cb9e3 PS |
3264 | { |
3265 | struct smb2_query_info_req *req; | |
296ecbae | 3266 | struct kvec *iov = rqst->rq_iov; |
b2fb7fec | 3267 | unsigned int total_len; |
296ecbae | 3268 | int rc; |
be4cb9e3 | 3269 | |
b2fb7fec RS |
3270 | rc = smb2_plain_req_init(SMB2_QUERY_INFO, tcon, (void **) &req, |
3271 | &total_len); | |
be4cb9e3 PS |
3272 | if (rc) |
3273 | return rc; | |
3274 | ||
42c493c1 | 3275 | req->InfoType = info_type; |
f0df737e | 3276 | req->FileInfoClass = info_class; |
be4cb9e3 PS |
3277 | req->PersistentFileId = persistent_fid; |
3278 | req->VolatileFileId = volatile_fid; | |
42c493c1 | 3279 | req->AdditionalInformation = cpu_to_le32(additional_info); |
48923d2a | 3280 | |
f0df737e | 3281 | req->OutputBufferLength = cpu_to_le32(output_len); |
f5b05d62 RS |
3282 | if (input_len) { |
3283 | req->InputBufferLength = cpu_to_le32(input_len); | |
3284 | /* total_len for smb query request never close to le16 max */ | |
3285 | req->InputBufferOffset = cpu_to_le16(total_len - 1); | |
3286 | memcpy(req->Buffer, input, input_len); | |
3287 | } | |
be4cb9e3 PS |
3288 | |
3289 | iov[0].iov_base = (char *)req; | |
b2fb7fec | 3290 | /* 1 for Buffer */ |
f5b05d62 | 3291 | iov[0].iov_len = total_len - 1 + input_len; |
296ecbae RS |
3292 | return 0; |
3293 | } | |
3294 | ||
3295 | void | |
3296 | SMB2_query_info_free(struct smb_rqst *rqst) | |
3297 | { | |
32a1fb36 RS |
3298 | if (rqst && rqst->rq_iov) |
3299 | cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */ | |
296ecbae RS |
3300 | } |
3301 | ||
3302 | static int | |
3303 | query_info(const unsigned int xid, struct cifs_tcon *tcon, | |
3304 | u64 persistent_fid, u64 volatile_fid, u8 info_class, u8 info_type, | |
3305 | u32 additional_info, size_t output_len, size_t min_len, void **data, | |
3306 | u32 *dlen) | |
3307 | { | |
3308 | struct smb_rqst rqst; | |
3309 | struct smb2_query_info_rsp *rsp = NULL; | |
3310 | struct kvec iov[1]; | |
3311 | struct kvec rsp_iov; | |
3312 | int rc = 0; | |
ef2298a0 | 3313 | int resp_buftype = CIFS_NO_BUFFER; |
296ecbae | 3314 | struct cifs_ses *ses = tcon->ses; |
ac6ad7a8 | 3315 | struct TCP_Server_Info *server; |
296ecbae | 3316 | int flags = 0; |
73aaf920 | 3317 | bool allocated = false; |
296ecbae RS |
3318 | |
3319 | cifs_dbg(FYI, "Query Info\n"); | |
3320 | ||
ac6ad7a8 CIK |
3321 | if (!ses) |
3322 | return -EIO; | |
3323 | server = ses->server; | |
3324 | if (!server) | |
296ecbae RS |
3325 | return -EIO; |
3326 | ||
3327 | if (smb3_encryption_required(tcon)) | |
3328 | flags |= CIFS_TRANSFORM_REQ; | |
be4cb9e3 | 3329 | |
40eff45b | 3330 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
296ecbae | 3331 | memset(&iov, 0, sizeof(iov)); |
40eff45b RS |
3332 | rqst.rq_iov = iov; |
3333 | rqst.rq_nvec = 1; | |
3334 | ||
296ecbae RS |
3335 | rc = SMB2_query_info_init(tcon, &rqst, persistent_fid, volatile_fid, |
3336 | info_class, info_type, additional_info, | |
f5b05d62 | 3337 | output_len, 0, NULL); |
296ecbae RS |
3338 | if (rc) |
3339 | goto qinf_exit; | |
3340 | ||
d42043a6 SF |
3341 | trace_smb3_query_info_enter(xid, persistent_fid, tcon->tid, |
3342 | ses->Suid, info_class, (__u32)info_type); | |
3343 | ||
40eff45b | 3344 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); |
da502f7d | 3345 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; |
e5d04887 | 3346 | |
be4cb9e3 PS |
3347 | if (rc) { |
3348 | cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); | |
eccb4422 SF |
3349 | trace_smb3_query_info_err(xid, persistent_fid, tcon->tid, |
3350 | ses->Suid, info_class, (__u32)info_type, rc); | |
be4cb9e3 PS |
3351 | goto qinf_exit; |
3352 | } | |
3353 | ||
d42043a6 SF |
3354 | trace_smb3_query_info_done(xid, persistent_fid, tcon->tid, |
3355 | ses->Suid, info_class, (__u32)info_type); | |
3356 | ||
42c493c1 SP |
3357 | if (dlen) { |
3358 | *dlen = le32_to_cpu(rsp->OutputBufferLength); | |
3359 | if (!*data) { | |
3360 | *data = kmalloc(*dlen, GFP_KERNEL); | |
3361 | if (!*data) { | |
3175eb9b | 3362 | cifs_tcon_dbg(VFS, |
42c493c1 SP |
3363 | "Error %d allocating memory for acl\n", |
3364 | rc); | |
3365 | *dlen = 0; | |
73aaf920 | 3366 | rc = -ENOMEM; |
42c493c1 SP |
3367 | goto qinf_exit; |
3368 | } | |
73aaf920 | 3369 | allocated = true; |
42c493c1 SP |
3370 | } |
3371 | } | |
3372 | ||
c5a5f38f RS |
3373 | rc = smb2_validate_and_copy_iov(le16_to_cpu(rsp->OutputBufferOffset), |
3374 | le32_to_cpu(rsp->OutputBufferLength), | |
3375 | &rsp_iov, min_len, *data); | |
73aaf920 CIK |
3376 | if (rc && allocated) { |
3377 | kfree(*data); | |
3378 | *data = NULL; | |
3379 | *dlen = 0; | |
3380 | } | |
be4cb9e3 PS |
3381 | |
3382 | qinf_exit: | |
296ecbae | 3383 | SMB2_query_info_free(&rqst); |
be4cb9e3 PS |
3384 | free_rsp_buf(resp_buftype, rsp); |
3385 | return rc; | |
3386 | } | |
9094fad1 | 3387 | |
42c493c1 SP |
3388 | int SMB2_query_info(const unsigned int xid, struct cifs_tcon *tcon, |
3389 | u64 persistent_fid, u64 volatile_fid, struct smb2_file_all_info *data) | |
3390 | { | |
3391 | return query_info(xid, tcon, persistent_fid, volatile_fid, | |
3392 | FILE_ALL_INFORMATION, SMB2_O_INFO_FILE, 0, | |
3393 | sizeof(struct smb2_file_all_info) + PATH_MAX * 2, | |
3394 | sizeof(struct smb2_file_all_info), (void **)&data, | |
3395 | NULL); | |
3396 | } | |
3397 | ||
f0df737e | 3398 | int |
42c493c1 | 3399 | SMB2_query_acl(const unsigned int xid, struct cifs_tcon *tcon, |
f0df737e | 3400 | u64 persistent_fid, u64 volatile_fid, |
42c493c1 | 3401 | void **data, u32 *plen) |
f0df737e | 3402 | { |
42c493c1 SP |
3403 | __u32 additional_info = OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO; |
3404 | *plen = 0; | |
3405 | ||
f0df737e | 3406 | return query_info(xid, tcon, persistent_fid, volatile_fid, |
42c493c1 | 3407 | 0, SMB2_O_INFO_SECURITY, additional_info, |
ee25c6dd | 3408 | SMB2_MAX_BUFFER_SIZE, MIN_SEC_DESC_LEN, data, plen); |
f0df737e PS |
3409 | } |
3410 | ||
3411 | int | |
3412 | SMB2_get_srv_num(const unsigned int xid, struct cifs_tcon *tcon, | |
3413 | u64 persistent_fid, u64 volatile_fid, __le64 *uniqueid) | |
3414 | { | |
3415 | return query_info(xid, tcon, persistent_fid, volatile_fid, | |
42c493c1 SP |
3416 | FILE_INTERNAL_INFORMATION, SMB2_O_INFO_FILE, 0, |
3417 | sizeof(struct smb2_file_internal_info), | |
f0df737e | 3418 | sizeof(struct smb2_file_internal_info), |
42c493c1 | 3419 | (void **)&uniqueid, NULL); |
f0df737e PS |
3420 | } |
3421 | ||
c3498185 SF |
3422 | /* |
3423 | * CHANGE_NOTIFY Request is sent to get notifications on changes to a directory | |
3424 | * See MS-SMB2 2.2.35 and 2.2.36 | |
3425 | */ | |
3426 | ||
388962e8 | 3427 | static int |
c3498185 SF |
3428 | SMB2_notify_init(const unsigned int xid, struct smb_rqst *rqst, |
3429 | struct cifs_tcon *tcon, u64 persistent_fid, u64 volatile_fid, | |
3430 | u32 completion_filter, bool watch_tree) | |
3431 | { | |
3432 | struct smb2_change_notify_req *req; | |
3433 | struct kvec *iov = rqst->rq_iov; | |
3434 | unsigned int total_len; | |
3435 | int rc; | |
3436 | ||
3437 | rc = smb2_plain_req_init(SMB2_CHANGE_NOTIFY, tcon, (void **) &req, &total_len); | |
3438 | if (rc) | |
3439 | return rc; | |
3440 | ||
3441 | req->PersistentFileId = persistent_fid; | |
3442 | req->VolatileFileId = volatile_fid; | |
d26c2ddd | 3443 | /* See note 354 of MS-SMB2, 64K max */ |
52870d50 SF |
3444 | req->OutputBufferLength = |
3445 | cpu_to_le32(SMB2_MAX_BUFFER_SIZE - MAX_SMB2_HDR_SIZE); | |
c3498185 SF |
3446 | req->CompletionFilter = cpu_to_le32(completion_filter); |
3447 | if (watch_tree) | |
3448 | req->Flags = cpu_to_le16(SMB2_WATCH_TREE); | |
3449 | else | |
3450 | req->Flags = 0; | |
3451 | ||
3452 | iov[0].iov_base = (char *)req; | |
3453 | iov[0].iov_len = total_len; | |
3454 | ||
3455 | return 0; | |
3456 | } | |
3457 | ||
3458 | int | |
3459 | SMB2_change_notify(const unsigned int xid, struct cifs_tcon *tcon, | |
3460 | u64 persistent_fid, u64 volatile_fid, bool watch_tree, | |
3461 | u32 completion_filter) | |
3462 | { | |
3463 | struct cifs_ses *ses = tcon->ses; | |
3464 | struct smb_rqst rqst; | |
3465 | struct kvec iov[1]; | |
3466 | struct kvec rsp_iov = {NULL, 0}; | |
3467 | int resp_buftype = CIFS_NO_BUFFER; | |
3468 | int flags = 0; | |
3469 | int rc = 0; | |
3470 | ||
3471 | cifs_dbg(FYI, "change notify\n"); | |
3472 | if (!ses || !(ses->server)) | |
3473 | return -EIO; | |
3474 | ||
3475 | if (smb3_encryption_required(tcon)) | |
3476 | flags |= CIFS_TRANSFORM_REQ; | |
3477 | ||
3478 | memset(&rqst, 0, sizeof(struct smb_rqst)); | |
3479 | memset(&iov, 0, sizeof(iov)); | |
3480 | rqst.rq_iov = iov; | |
3481 | rqst.rq_nvec = 1; | |
3482 | ||
3483 | rc = SMB2_notify_init(xid, &rqst, tcon, persistent_fid, volatile_fid, | |
3484 | completion_filter, watch_tree); | |
3485 | if (rc) | |
3486 | goto cnotify_exit; | |
3487 | ||
3488 | trace_smb3_notify_enter(xid, persistent_fid, tcon->tid, ses->Suid, | |
3489 | (u8)watch_tree, completion_filter); | |
3490 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); | |
3491 | ||
3492 | if (rc != 0) { | |
3493 | cifs_stats_fail_inc(tcon, SMB2_CHANGE_NOTIFY_HE); | |
3494 | trace_smb3_notify_err(xid, persistent_fid, tcon->tid, ses->Suid, | |
3495 | (u8)watch_tree, completion_filter, rc); | |
3496 | } else | |
3497 | trace_smb3_notify_done(xid, persistent_fid, tcon->tid, | |
3498 | ses->Suid, (u8)watch_tree, completion_filter); | |
3499 | ||
3500 | cnotify_exit: | |
3501 | if (rqst.rq_iov) | |
3502 | cifs_small_buf_release(rqst.rq_iov[0].iov_base); /* request */ | |
3503 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); | |
3504 | return rc; | |
3505 | } | |
3506 | ||
3507 | ||
3508 | ||
9094fad1 PS |
3509 | /* |
3510 | * This is a no-op for now. We're not really interested in the reply, but | |
3511 | * rather in the fact that the server sent one and that server->lstrp | |
3512 | * gets updated. | |
3513 | * | |
3514 | * FIXME: maybe we should consider checking that the reply matches request? | |
3515 | */ | |
3516 | static void | |
3517 | smb2_echo_callback(struct mid_q_entry *mid) | |
3518 | { | |
3519 | struct TCP_Server_Info *server = mid->callback_data; | |
31473fc4 | 3520 | struct smb2_echo_rsp *rsp = (struct smb2_echo_rsp *)mid->resp_buf; |
34f4deb7 | 3521 | struct cifs_credits credits = { .value = 0, .instance = 0 }; |
9094fad1 | 3522 | |
0fd1d37b | 3523 | if (mid->mid_state == MID_RESPONSE_RECEIVED |
34f4deb7 PS |
3524 | || mid->mid_state == MID_RESPONSE_MALFORMED) { |
3525 | credits.value = le16_to_cpu(rsp->sync_hdr.CreditRequest); | |
3526 | credits.instance = server->reconnect_instance; | |
3527 | } | |
9094fad1 PS |
3528 | |
3529 | DeleteMidQEntry(mid); | |
34f4deb7 | 3530 | add_credits(server, &credits, CIFS_ECHO_OP); |
9094fad1 PS |
3531 | } |
3532 | ||
53e0e11e PS |
3533 | void smb2_reconnect_server(struct work_struct *work) |
3534 | { | |
3535 | struct TCP_Server_Info *server = container_of(work, | |
3536 | struct TCP_Server_Info, reconnect.work); | |
3537 | struct cifs_ses *ses; | |
3538 | struct cifs_tcon *tcon, *tcon2; | |
3539 | struct list_head tmp_list; | |
3540 | int tcon_exist = false; | |
18ea4311 GP |
3541 | int rc; |
3542 | int resched = false; | |
3543 | ||
53e0e11e PS |
3544 | |
3545 | /* Prevent simultaneous reconnects that can corrupt tcon->rlist list */ | |
3546 | mutex_lock(&server->reconnect_mutex); | |
3547 | ||
3548 | INIT_LIST_HEAD(&tmp_list); | |
3549 | cifs_dbg(FYI, "Need negotiate, reconnecting tcons\n"); | |
3550 | ||
3551 | spin_lock(&cifs_tcp_ses_lock); | |
3552 | list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { | |
3553 | list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { | |
96a988ff | 3554 | if (tcon->need_reconnect || tcon->need_reopen_files) { |
53e0e11e PS |
3555 | tcon->tc_count++; |
3556 | list_add_tail(&tcon->rlist, &tmp_list); | |
3557 | tcon_exist = true; | |
3558 | } | |
3559 | } | |
0ff2b018 RS |
3560 | /* |
3561 | * IPC has the same lifetime as its session and uses its | |
3562 | * refcount. | |
3563 | */ | |
b327a717 AA |
3564 | if (ses->tcon_ipc && ses->tcon_ipc->need_reconnect) { |
3565 | list_add_tail(&ses->tcon_ipc->rlist, &tmp_list); | |
3566 | tcon_exist = true; | |
0ff2b018 | 3567 | ses->ses_count++; |
b327a717 | 3568 | } |
53e0e11e PS |
3569 | } |
3570 | /* | |
3571 | * Get the reference to server struct to be sure that the last call of | |
3572 | * cifs_put_tcon() in the loop below won't release the server pointer. | |
3573 | */ | |
3574 | if (tcon_exist) | |
3575 | server->srv_count++; | |
3576 | ||
3577 | spin_unlock(&cifs_tcp_ses_lock); | |
3578 | ||
3579 | list_for_each_entry_safe(tcon, tcon2, &tmp_list, rlist) { | |
18ea4311 GP |
3580 | rc = smb2_reconnect(SMB2_INTERNAL_CMD, tcon); |
3581 | if (!rc) | |
96a988ff | 3582 | cifs_reopen_persistent_handles(tcon); |
18ea4311 GP |
3583 | else |
3584 | resched = true; | |
53e0e11e | 3585 | list_del_init(&tcon->rlist); |
0ff2b018 RS |
3586 | if (tcon->ipc) |
3587 | cifs_put_smb_ses(tcon->ses); | |
3588 | else | |
3589 | cifs_put_tcon(tcon); | |
53e0e11e PS |
3590 | } |
3591 | ||
3592 | cifs_dbg(FYI, "Reconnecting tcons finished\n"); | |
18ea4311 GP |
3593 | if (resched) |
3594 | queue_delayed_work(cifsiod_wq, &server->reconnect, 2 * HZ); | |
53e0e11e PS |
3595 | mutex_unlock(&server->reconnect_mutex); |
3596 | ||
3597 | /* now we can safely release srv struct */ | |
3598 | if (tcon_exist) | |
3599 | cifs_put_tcp_session(server, 1); | |
3600 | } | |
3601 | ||
9094fad1 PS |
3602 | int |
3603 | SMB2_echo(struct TCP_Server_Info *server) | |
3604 | { | |
3605 | struct smb2_echo_req *req; | |
3606 | int rc = 0; | |
c713c877 | 3607 | struct kvec iov[1]; |
738f9de5 | 3608 | struct smb_rqst rqst = { .rq_iov = iov, |
c713c877 | 3609 | .rq_nvec = 1 }; |
7f7ae759 | 3610 | unsigned int total_len; |
9094fad1 | 3611 | |
f96637be | 3612 | cifs_dbg(FYI, "In echo request\n"); |
9094fad1 | 3613 | |
4fcd1813 | 3614 | if (server->tcpStatus == CifsNeedNegotiate) { |
53e0e11e | 3615 | /* No need to send echo on newly established connections */ |
b08484d7 | 3616 | mod_delayed_work(cifsiod_wq, &server->reconnect, 0); |
53e0e11e | 3617 | return rc; |
4fcd1813 SF |
3618 | } |
3619 | ||
7f7ae759 | 3620 | rc = smb2_plain_req_init(SMB2_ECHO, NULL, (void **)&req, &total_len); |
9094fad1 PS |
3621 | if (rc) |
3622 | return rc; | |
3623 | ||
7f7ae759 | 3624 | req->sync_hdr.CreditRequest = cpu_to_le16(1); |
9094fad1 | 3625 | |
c713c877 RS |
3626 | iov[0].iov_len = total_len; |
3627 | iov[0].iov_base = (char *)req; | |
9094fad1 | 3628 | |
9b7c18a2 | 3629 | rc = cifs_call_async(server, &rqst, NULL, smb2_echo_callback, NULL, |
3349c3a7 | 3630 | server, CIFS_ECHO_OP, NULL); |
9094fad1 | 3631 | if (rc) |
f96637be | 3632 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
9094fad1 PS |
3633 | |
3634 | cifs_small_buf_release(req); | |
3635 | return rc; | |
3636 | } | |
7a5cfb19 | 3637 | |
86e14e12 RS |
3638 | void |
3639 | SMB2_flush_free(struct smb_rqst *rqst) | |
3640 | { | |
3641 | if (rqst && rqst->rq_iov) | |
3642 | cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */ | |
3643 | } | |
3644 | ||
7a5cfb19 | 3645 | int |
86e14e12 RS |
3646 | SMB2_flush_init(const unsigned int xid, struct smb_rqst *rqst, |
3647 | struct cifs_tcon *tcon, u64 persistent_fid, u64 volatile_fid) | |
7a5cfb19 PS |
3648 | { |
3649 | struct smb2_flush_req *req; | |
86e14e12 | 3650 | struct kvec *iov = rqst->rq_iov; |
1f444e4c | 3651 | unsigned int total_len; |
86e14e12 | 3652 | int rc; |
7a5cfb19 | 3653 | |
1f444e4c | 3654 | rc = smb2_plain_req_init(SMB2_FLUSH, tcon, (void **) &req, &total_len); |
7a5cfb19 PS |
3655 | if (rc) |
3656 | return rc; | |
3657 | ||
3658 | req->PersistentFileId = persistent_fid; | |
3659 | req->VolatileFileId = volatile_fid; | |
3660 | ||
3661 | iov[0].iov_base = (char *)req; | |
1f444e4c | 3662 | iov[0].iov_len = total_len; |
7a5cfb19 | 3663 | |
86e14e12 RS |
3664 | return 0; |
3665 | } | |
3666 | ||
3667 | int | |
3668 | SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, | |
3669 | u64 volatile_fid) | |
3670 | { | |
3671 | struct cifs_ses *ses = tcon->ses; | |
3672 | struct smb_rqst rqst; | |
3673 | struct kvec iov[1]; | |
3674 | struct kvec rsp_iov = {NULL, 0}; | |
3675 | int resp_buftype = CIFS_NO_BUFFER; | |
3676 | int flags = 0; | |
3677 | int rc = 0; | |
3678 | ||
3679 | cifs_dbg(FYI, "flush\n"); | |
3680 | if (!ses || !(ses->server)) | |
3681 | return -EIO; | |
3682 | ||
3683 | if (smb3_encryption_required(tcon)) | |
3684 | flags |= CIFS_TRANSFORM_REQ; | |
3685 | ||
40eff45b | 3686 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
86e14e12 | 3687 | memset(&iov, 0, sizeof(iov)); |
40eff45b RS |
3688 | rqst.rq_iov = iov; |
3689 | rqst.rq_nvec = 1; | |
3690 | ||
86e14e12 RS |
3691 | rc = SMB2_flush_init(xid, &rqst, tcon, persistent_fid, volatile_fid); |
3692 | if (rc) | |
3693 | goto flush_exit; | |
3694 | ||
f90f9797 | 3695 | trace_smb3_flush_enter(xid, persistent_fid, tcon->tid, ses->Suid); |
40eff45b | 3696 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); |
7a5cfb19 | 3697 | |
eccb4422 | 3698 | if (rc != 0) { |
7a5cfb19 | 3699 | cifs_stats_fail_inc(tcon, SMB2_FLUSH_HE); |
eccb4422 SF |
3700 | trace_smb3_flush_err(xid, persistent_fid, tcon->tid, ses->Suid, |
3701 | rc); | |
f90f9797 SF |
3702 | } else |
3703 | trace_smb3_flush_done(xid, persistent_fid, tcon->tid, | |
3704 | ses->Suid); | |
7a5cfb19 | 3705 | |
86e14e12 RS |
3706 | flush_exit: |
3707 | SMB2_flush_free(&rqst); | |
da502f7d | 3708 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); |
7a5cfb19 PS |
3709 | return rc; |
3710 | } | |
09a4707e PS |
3711 | |
3712 | /* | |
3713 | * To form a chain of read requests, any read requests after the first should | |
3714 | * have the end_of_chain boolean set to true. | |
3715 | */ | |
3716 | static int | |
738f9de5 | 3717 | smb2_new_read_req(void **buf, unsigned int *total_len, |
2dabfd5b LL |
3718 | struct cifs_io_parms *io_parms, struct cifs_readdata *rdata, |
3719 | unsigned int remaining_bytes, int request_type) | |
09a4707e PS |
3720 | { |
3721 | int rc = -EACCES; | |
b8f57ee8 | 3722 | struct smb2_read_plain_req *req = NULL; |
31473fc4 | 3723 | struct smb2_sync_hdr *shdr; |
2dabfd5b | 3724 | struct TCP_Server_Info *server; |
09a4707e | 3725 | |
b8f57ee8 PS |
3726 | rc = smb2_plain_req_init(SMB2_READ, io_parms->tcon, (void **) &req, |
3727 | total_len); | |
09a4707e PS |
3728 | if (rc) |
3729 | return rc; | |
2dabfd5b LL |
3730 | |
3731 | server = io_parms->tcon->ses->server; | |
3732 | if (server == NULL) | |
09a4707e PS |
3733 | return -ECONNABORTED; |
3734 | ||
b8f57ee8 | 3735 | shdr = &req->sync_hdr; |
31473fc4 | 3736 | shdr->ProcessId = cpu_to_le32(io_parms->pid); |
09a4707e PS |
3737 | |
3738 | req->PersistentFileId = io_parms->persistent_fid; | |
3739 | req->VolatileFileId = io_parms->volatile_fid; | |
3740 | req->ReadChannelInfoOffset = 0; /* reserved */ | |
3741 | req->ReadChannelInfoLength = 0; /* reserved */ | |
3742 | req->Channel = 0; /* reserved */ | |
3743 | req->MinimumCount = 0; | |
3744 | req->Length = cpu_to_le32(io_parms->length); | |
3745 | req->Offset = cpu_to_le64(io_parms->offset); | |
d323c246 SF |
3746 | |
3747 | trace_smb3_read_enter(0 /* xid */, | |
3748 | io_parms->persistent_fid, | |
3749 | io_parms->tcon->tid, io_parms->tcon->ses->Suid, | |
3750 | io_parms->offset, io_parms->length); | |
bd3dcc6a LL |
3751 | #ifdef CONFIG_CIFS_SMB_DIRECT |
3752 | /* | |
3753 | * If we want to do a RDMA write, fill in and append | |
3754 | * smbd_buffer_descriptor_v1 to the end of read request | |
3755 | */ | |
bb4c0419 | 3756 | if (server->rdma && rdata && !server->sign && |
bd3dcc6a LL |
3757 | rdata->bytes >= server->smbd_conn->rdma_readwrite_threshold) { |
3758 | ||
3759 | struct smbd_buffer_descriptor_v1 *v1; | |
3760 | bool need_invalidate = | |
3761 | io_parms->tcon->ses->server->dialect == SMB30_PROT_ID; | |
3762 | ||
3763 | rdata->mr = smbd_register_mr( | |
3764 | server->smbd_conn, rdata->pages, | |
7cf20bce LL |
3765 | rdata->nr_pages, rdata->page_offset, |
3766 | rdata->tailsz, true, need_invalidate); | |
bd3dcc6a | 3767 | if (!rdata->mr) |
b7972092 | 3768 | return -EAGAIN; |
bd3dcc6a LL |
3769 | |
3770 | req->Channel = SMB2_CHANNEL_RDMA_V1_INVALIDATE; | |
3771 | if (need_invalidate) | |
3772 | req->Channel = SMB2_CHANNEL_RDMA_V1; | |
3773 | req->ReadChannelInfoOffset = | |
2026b06e | 3774 | cpu_to_le16(offsetof(struct smb2_read_plain_req, Buffer)); |
bd3dcc6a | 3775 | req->ReadChannelInfoLength = |
2026b06e | 3776 | cpu_to_le16(sizeof(struct smbd_buffer_descriptor_v1)); |
bd3dcc6a | 3777 | v1 = (struct smbd_buffer_descriptor_v1 *) &req->Buffer[0]; |
2026b06e SF |
3778 | v1->offset = cpu_to_le64(rdata->mr->mr->iova); |
3779 | v1->token = cpu_to_le32(rdata->mr->mr->rkey); | |
3780 | v1->length = cpu_to_le32(rdata->mr->mr->length); | |
bd3dcc6a LL |
3781 | |
3782 | *total_len += sizeof(*v1) - 1; | |
3783 | } | |
3784 | #endif | |
09a4707e PS |
3785 | if (request_type & CHAINED_REQUEST) { |
3786 | if (!(request_type & END_OF_CHAIN)) { | |
b8f57ee8 PS |
3787 | /* next 8-byte aligned request */ |
3788 | *total_len = DIV_ROUND_UP(*total_len, 8) * 8; | |
3789 | shdr->NextCommand = cpu_to_le32(*total_len); | |
09a4707e | 3790 | } else /* END_OF_CHAIN */ |
31473fc4 | 3791 | shdr->NextCommand = 0; |
09a4707e | 3792 | if (request_type & RELATED_REQUEST) { |
31473fc4 | 3793 | shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS; |
09a4707e PS |
3794 | /* |
3795 | * Related requests use info from previous read request | |
3796 | * in chain. | |
3797 | */ | |
31473fc4 PS |
3798 | shdr->SessionId = 0xFFFFFFFF; |
3799 | shdr->TreeId = 0xFFFFFFFF; | |
09a4707e PS |
3800 | req->PersistentFileId = 0xFFFFFFFF; |
3801 | req->VolatileFileId = 0xFFFFFFFF; | |
3802 | } | |
3803 | } | |
3804 | if (remaining_bytes > io_parms->length) | |
3805 | req->RemainingBytes = cpu_to_le32(remaining_bytes); | |
3806 | else | |
3807 | req->RemainingBytes = 0; | |
3808 | ||
738f9de5 | 3809 | *buf = req; |
09a4707e PS |
3810 | return rc; |
3811 | } | |
3812 | ||
3813 | static void | |
3814 | smb2_readv_callback(struct mid_q_entry *mid) | |
3815 | { | |
3816 | struct cifs_readdata *rdata = mid->callback_data; | |
3817 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
3818 | struct TCP_Server_Info *server = tcon->ses->server; | |
738f9de5 | 3819 | struct smb2_sync_hdr *shdr = |
977b6170 | 3820 | (struct smb2_sync_hdr *)rdata->iov[0].iov_base; |
34f4deb7 | 3821 | struct cifs_credits credits = { .value = 0, .instance = 0 }; |
46f17d17 SF |
3822 | struct smb_rqst rqst = { .rq_iov = &rdata->iov[1], |
3823 | .rq_nvec = 1, | |
8321fec4 | 3824 | .rq_pages = rdata->pages, |
1dbe3466 | 3825 | .rq_offset = rdata->page_offset, |
8321fec4 JL |
3826 | .rq_npages = rdata->nr_pages, |
3827 | .rq_pagesz = rdata->pagesz, | |
3828 | .rq_tailsz = rdata->tailsz }; | |
09a4707e | 3829 | |
f96637be JP |
3830 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
3831 | __func__, mid->mid, mid->mid_state, rdata->result, | |
3832 | rdata->bytes); | |
09a4707e PS |
3833 | |
3834 | switch (mid->mid_state) { | |
3835 | case MID_RESPONSE_RECEIVED: | |
34f4deb7 PS |
3836 | credits.value = le16_to_cpu(shdr->CreditRequest); |
3837 | credits.instance = server->reconnect_instance; | |
09a4707e | 3838 | /* result already set, check signature */ |
4326ed2f | 3839 | if (server->sign && !mid->decrypted) { |
3c1bf7e4 PS |
3840 | int rc; |
3841 | ||
0b688cfc | 3842 | rc = smb2_verify_signature(&rqst, server); |
3c1bf7e4 | 3843 | if (rc) |
3175eb9b | 3844 | cifs_tcon_dbg(VFS, "SMB signature verification returned error = %d\n", |
f96637be | 3845 | rc); |
3c1bf7e4 | 3846 | } |
09a4707e | 3847 | /* FIXME: should this be counted toward the initiating task? */ |
34a54d61 PS |
3848 | task_io_account_read(rdata->got_bytes); |
3849 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
09a4707e PS |
3850 | break; |
3851 | case MID_REQUEST_SUBMITTED: | |
3852 | case MID_RETRY_NEEDED: | |
3853 | rdata->result = -EAGAIN; | |
d913ed17 PS |
3854 | if (server->sign && rdata->got_bytes) |
3855 | /* reset bytes number since we can not check a sign */ | |
3856 | rdata->got_bytes = 0; | |
3857 | /* FIXME: should this be counted toward the initiating task? */ | |
3858 | task_io_account_read(rdata->got_bytes); | |
3859 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
09a4707e | 3860 | break; |
0fd1d37b | 3861 | case MID_RESPONSE_MALFORMED: |
34f4deb7 PS |
3862 | credits.value = le16_to_cpu(shdr->CreditRequest); |
3863 | credits.instance = server->reconnect_instance; | |
0fd1d37b | 3864 | /* fall through */ |
09a4707e | 3865 | default: |
6b15eb18 | 3866 | rdata->result = -EIO; |
09a4707e | 3867 | } |
bd3dcc6a LL |
3868 | #ifdef CONFIG_CIFS_SMB_DIRECT |
3869 | /* | |
3870 | * If this rdata has a memmory registered, the MR can be freed | |
3871 | * MR needs to be freed as soon as I/O finishes to prevent deadlock | |
3872 | * because they have limited number and are used for future I/Os | |
3873 | */ | |
3874 | if (rdata->mr) { | |
3875 | smbd_deregister_mr(rdata->mr); | |
3876 | rdata->mr = NULL; | |
3877 | } | |
3878 | #endif | |
082aaa87 | 3879 | if (rdata->result && rdata->result != -ENODATA) { |
09a4707e | 3880 | cifs_stats_fail_inc(tcon, SMB2_READ_HE); |
7d42e72f PS |
3881 | trace_smb3_read_err(0 /* xid */, |
3882 | rdata->cfile->fid.persistent_fid, | |
3883 | tcon->tid, tcon->ses->Suid, rdata->offset, | |
3884 | rdata->bytes, rdata->result); | |
3885 | } else | |
3886 | trace_smb3_read_done(0 /* xid */, | |
3887 | rdata->cfile->fid.persistent_fid, | |
3888 | tcon->tid, tcon->ses->Suid, | |
3889 | rdata->offset, rdata->got_bytes); | |
09a4707e PS |
3890 | |
3891 | queue_work(cifsiod_wq, &rdata->work); | |
3892 | DeleteMidQEntry(mid); | |
34f4deb7 | 3893 | add_credits(server, &credits, 0); |
09a4707e PS |
3894 | } |
3895 | ||
738f9de5 | 3896 | /* smb2_async_readv - send an async read, and set up mid to handle result */ |
09a4707e PS |
3897 | int |
3898 | smb2_async_readv(struct cifs_readdata *rdata) | |
3899 | { | |
bed9da02 | 3900 | int rc, flags = 0; |
31473fc4 PS |
3901 | char *buf; |
3902 | struct smb2_sync_hdr *shdr; | |
09a4707e | 3903 | struct cifs_io_parms io_parms; |
738f9de5 | 3904 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
c713c877 | 3905 | .rq_nvec = 1 }; |
bed9da02 | 3906 | struct TCP_Server_Info *server; |
738f9de5 | 3907 | unsigned int total_len; |
09a4707e | 3908 | |
f96637be JP |
3909 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
3910 | __func__, rdata->offset, rdata->bytes); | |
09a4707e PS |
3911 | |
3912 | io_parms.tcon = tlink_tcon(rdata->cfile->tlink); | |
3913 | io_parms.offset = rdata->offset; | |
3914 | io_parms.length = rdata->bytes; | |
3915 | io_parms.persistent_fid = rdata->cfile->fid.persistent_fid; | |
3916 | io_parms.volatile_fid = rdata->cfile->fid.volatile_fid; | |
3917 | io_parms.pid = rdata->pid; | |
bed9da02 PS |
3918 | |
3919 | server = io_parms.tcon->ses->server; | |
3920 | ||
2dabfd5b LL |
3921 | rc = smb2_new_read_req( |
3922 | (void **) &buf, &total_len, &io_parms, rdata, 0, 0); | |
f0b93cb9 | 3923 | if (rc) |
09a4707e PS |
3924 | return rc; |
3925 | ||
5a77e75f | 3926 | if (smb3_encryption_required(io_parms.tcon)) |
7fb8986e PS |
3927 | flags |= CIFS_TRANSFORM_REQ; |
3928 | ||
c713c877 RS |
3929 | rdata->iov[0].iov_base = buf; |
3930 | rdata->iov[0].iov_len = total_len; | |
b8f57ee8 PS |
3931 | |
3932 | shdr = (struct smb2_sync_hdr *)buf; | |
09a4707e | 3933 | |
335b7b62 | 3934 | if (rdata->credits.value > 0) { |
31473fc4 | 3935 | shdr->CreditCharge = cpu_to_le16(DIV_ROUND_UP(rdata->bytes, |
bed9da02 | 3936 | SMB2_MAX_BUFFER_SIZE)); |
b983f7e9 PS |
3937 | shdr->CreditRequest = |
3938 | cpu_to_le16(le16_to_cpu(shdr->CreditCharge) + 1); | |
9a1c67e8 PS |
3939 | |
3940 | rc = adjust_credits(server, &rdata->credits, rdata->bytes); | |
3941 | if (rc) | |
335b7b62 | 3942 | goto async_readv_out; |
9a1c67e8 | 3943 | |
7fb8986e | 3944 | flags |= CIFS_HAS_CREDITS; |
bed9da02 PS |
3945 | } |
3946 | ||
09a4707e | 3947 | kref_get(&rdata->refcount); |
fec344e3 | 3948 | rc = cifs_call_async(io_parms.tcon->ses->server, &rqst, |
09a4707e | 3949 | cifs_readv_receive, smb2_readv_callback, |
3349c3a7 PS |
3950 | smb3_handle_read_data, rdata, flags, |
3951 | &rdata->credits); | |
e5d04887 | 3952 | if (rc) { |
09a4707e | 3953 | kref_put(&rdata->refcount, cifs_readdata_release); |
e5d04887 | 3954 | cifs_stats_fail_inc(io_parms.tcon, SMB2_READ_HE); |
7d42e72f PS |
3955 | trace_smb3_read_err(0 /* xid */, io_parms.persistent_fid, |
3956 | io_parms.tcon->tid, | |
3957 | io_parms.tcon->ses->Suid, | |
3958 | io_parms.offset, io_parms.length, rc); | |
3959 | } | |
09a4707e | 3960 | |
335b7b62 | 3961 | async_readv_out: |
09a4707e PS |
3962 | cifs_small_buf_release(buf); |
3963 | return rc; | |
3964 | } | |
33319141 | 3965 | |
d8e05039 PS |
3966 | int |
3967 | SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms, | |
3968 | unsigned int *nbytes, char **buf, int *buf_type) | |
3969 | { | |
40eff45b | 3970 | struct smb_rqst rqst; |
1efd4fc7 | 3971 | int resp_buftype, rc; |
b8f57ee8 | 3972 | struct smb2_read_plain_req *req = NULL; |
d8e05039 | 3973 | struct smb2_read_rsp *rsp = NULL; |
f5688a6d | 3974 | struct kvec iov[1]; |
da502f7d | 3975 | struct kvec rsp_iov; |
738f9de5 | 3976 | unsigned int total_len; |
7fb8986e PS |
3977 | int flags = CIFS_LOG_ERROR; |
3978 | struct cifs_ses *ses = io_parms->tcon->ses; | |
d8e05039 PS |
3979 | |
3980 | *nbytes = 0; | |
2dabfd5b | 3981 | rc = smb2_new_read_req((void **)&req, &total_len, io_parms, NULL, 0, 0); |
d8e05039 PS |
3982 | if (rc) |
3983 | return rc; | |
3984 | ||
5a77e75f | 3985 | if (smb3_encryption_required(io_parms->tcon)) |
7fb8986e PS |
3986 | flags |= CIFS_TRANSFORM_REQ; |
3987 | ||
f5688a6d RS |
3988 | iov[0].iov_base = (char *)req; |
3989 | iov[0].iov_len = total_len; | |
b8f57ee8 | 3990 | |
40eff45b RS |
3991 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
3992 | rqst.rq_iov = iov; | |
3993 | rqst.rq_nvec = 1; | |
3994 | ||
3995 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d | 3996 | rsp = (struct smb2_read_rsp *)rsp_iov.iov_base; |
d8e05039 | 3997 | |
a821df3f RS |
3998 | if (rc) { |
3999 | if (rc != -ENODATA) { | |
4000 | cifs_stats_fail_inc(io_parms->tcon, SMB2_READ_HE); | |
4001 | cifs_dbg(VFS, "Send error in read = %d\n", rc); | |
7d42e72f PS |
4002 | trace_smb3_read_err(xid, req->PersistentFileId, |
4003 | io_parms->tcon->tid, ses->Suid, | |
4004 | io_parms->offset, io_parms->length, | |
4005 | rc); | |
b0a42f2a SF |
4006 | } else |
4007 | trace_smb3_read_done(xid, req->PersistentFileId, | |
4008 | io_parms->tcon->tid, ses->Suid, | |
4009 | io_parms->offset, 0); | |
da502f7d | 4010 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); |
05fd5c2c | 4011 | cifs_small_buf_release(req); |
a821df3f | 4012 | return rc == -ENODATA ? 0 : rc; |
eccb4422 SF |
4013 | } else |
4014 | trace_smb3_read_done(xid, req->PersistentFileId, | |
4015 | io_parms->tcon->tid, ses->Suid, | |
4016 | io_parms->offset, io_parms->length); | |
d8e05039 | 4017 | |
088aaf17 Z |
4018 | cifs_small_buf_release(req); |
4019 | ||
a821df3f RS |
4020 | *nbytes = le32_to_cpu(rsp->DataLength); |
4021 | if ((*nbytes > CIFS_MAX_MSGSIZE) || | |
4022 | (*nbytes > io_parms->length)) { | |
4023 | cifs_dbg(FYI, "bad length %d for count %d\n", | |
4024 | *nbytes, io_parms->length); | |
4025 | rc = -EIO; | |
4026 | *nbytes = 0; | |
d8e05039 PS |
4027 | } |
4028 | ||
4029 | if (*buf) { | |
977b6170 | 4030 | memcpy(*buf, (char *)rsp + rsp->DataOffset, *nbytes); |
da502f7d | 4031 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); |
d8e05039 | 4032 | } else if (resp_buftype != CIFS_NO_BUFFER) { |
da502f7d | 4033 | *buf = rsp_iov.iov_base; |
d8e05039 PS |
4034 | if (resp_buftype == CIFS_SMALL_BUFFER) |
4035 | *buf_type = CIFS_SMALL_BUFFER; | |
4036 | else if (resp_buftype == CIFS_LARGE_BUFFER) | |
4037 | *buf_type = CIFS_LARGE_BUFFER; | |
4038 | } | |
4039 | return rc; | |
4040 | } | |
4041 | ||
33319141 PS |
4042 | /* |
4043 | * Check the mid_state and signature on received buffer (if any), and queue the | |
4044 | * workqueue completion task. | |
4045 | */ | |
4046 | static void | |
4047 | smb2_writev_callback(struct mid_q_entry *mid) | |
4048 | { | |
4049 | struct cifs_writedata *wdata = mid->callback_data; | |
4050 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); | |
34f4deb7 | 4051 | struct TCP_Server_Info *server = tcon->ses->server; |
33319141 PS |
4052 | unsigned int written; |
4053 | struct smb2_write_rsp *rsp = (struct smb2_write_rsp *)mid->resp_buf; | |
34f4deb7 | 4054 | struct cifs_credits credits = { .value = 0, .instance = 0 }; |
33319141 PS |
4055 | |
4056 | switch (mid->mid_state) { | |
4057 | case MID_RESPONSE_RECEIVED: | |
34f4deb7 PS |
4058 | credits.value = le16_to_cpu(rsp->sync_hdr.CreditRequest); |
4059 | credits.instance = server->reconnect_instance; | |
4060 | wdata->result = smb2_check_receive(mid, server, 0); | |
33319141 PS |
4061 | if (wdata->result != 0) |
4062 | break; | |
4063 | ||
4064 | written = le32_to_cpu(rsp->DataLength); | |
4065 | /* | |
4066 | * Mask off high 16 bits when bytes written as returned | |
4067 | * by the server is greater than bytes requested by the | |
4068 | * client. OS/2 servers are known to set incorrect | |
4069 | * CountHigh values. | |
4070 | */ | |
4071 | if (written > wdata->bytes) | |
4072 | written &= 0xFFFF; | |
4073 | ||
4074 | if (written < wdata->bytes) | |
4075 | wdata->result = -ENOSPC; | |
4076 | else | |
4077 | wdata->bytes = written; | |
4078 | break; | |
4079 | case MID_REQUEST_SUBMITTED: | |
4080 | case MID_RETRY_NEEDED: | |
4081 | wdata->result = -EAGAIN; | |
4082 | break; | |
0fd1d37b | 4083 | case MID_RESPONSE_MALFORMED: |
34f4deb7 PS |
4084 | credits.value = le16_to_cpu(rsp->sync_hdr.CreditRequest); |
4085 | credits.instance = server->reconnect_instance; | |
0fd1d37b | 4086 | /* fall through */ |
33319141 PS |
4087 | default: |
4088 | wdata->result = -EIO; | |
4089 | break; | |
4090 | } | |
db223a59 LL |
4091 | #ifdef CONFIG_CIFS_SMB_DIRECT |
4092 | /* | |
4093 | * If this wdata has a memory registered, the MR can be freed | |
4094 | * The number of MRs available is limited, it's important to recover | |
4095 | * used MR as soon as I/O is finished. Hold MR longer in the later | |
4096 | * I/O process can possibly result in I/O deadlock due to lack of MR | |
4097 | * to send request on I/O retry | |
4098 | */ | |
4099 | if (wdata->mr) { | |
4100 | smbd_deregister_mr(wdata->mr); | |
4101 | wdata->mr = NULL; | |
4102 | } | |
4103 | #endif | |
7d42e72f | 4104 | if (wdata->result) { |
33319141 | 4105 | cifs_stats_fail_inc(tcon, SMB2_WRITE_HE); |
7d42e72f PS |
4106 | trace_smb3_write_err(0 /* no xid */, |
4107 | wdata->cfile->fid.persistent_fid, | |
4108 | tcon->tid, tcon->ses->Suid, wdata->offset, | |
4109 | wdata->bytes, wdata->result); | |
d6fd4190 SF |
4110 | if (wdata->result == -ENOSPC) |
4111 | printk_once(KERN_WARNING "Out of space writing to %s\n", | |
4112 | tcon->treeName); | |
7d42e72f PS |
4113 | } else |
4114 | trace_smb3_write_done(0 /* no xid */, | |
4115 | wdata->cfile->fid.persistent_fid, | |
4116 | tcon->tid, tcon->ses->Suid, | |
4117 | wdata->offset, wdata->bytes); | |
33319141 PS |
4118 | |
4119 | queue_work(cifsiod_wq, &wdata->work); | |
4120 | DeleteMidQEntry(mid); | |
34f4deb7 | 4121 | add_credits(server, &credits, 0); |
33319141 PS |
4122 | } |
4123 | ||
4124 | /* smb2_async_writev - send an async write, and set up mid to handle result */ | |
4125 | int | |
4a5c80d7 SF |
4126 | smb2_async_writev(struct cifs_writedata *wdata, |
4127 | void (*release)(struct kref *kref)) | |
33319141 | 4128 | { |
cb7e9eab | 4129 | int rc = -EACCES, flags = 0; |
33319141 | 4130 | struct smb2_write_req *req = NULL; |
31473fc4 | 4131 | struct smb2_sync_hdr *shdr; |
33319141 | 4132 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
cb7e9eab | 4133 | struct TCP_Server_Info *server = tcon->ses->server; |
c713c877 | 4134 | struct kvec iov[1]; |
738f9de5 | 4135 | struct smb_rqst rqst = { }; |
f5688a6d | 4136 | unsigned int total_len; |
33319141 | 4137 | |
f5688a6d | 4138 | rc = smb2_plain_req_init(SMB2_WRITE, tcon, (void **) &req, &total_len); |
f0b93cb9 PS |
4139 | if (rc) |
4140 | return rc; | |
33319141 | 4141 | |
5a77e75f | 4142 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
4143 | flags |= CIFS_TRANSFORM_REQ; |
4144 | ||
f5688a6d | 4145 | shdr = (struct smb2_sync_hdr *)req; |
31473fc4 | 4146 | shdr->ProcessId = cpu_to_le32(wdata->cfile->pid); |
33319141 PS |
4147 | |
4148 | req->PersistentFileId = wdata->cfile->fid.persistent_fid; | |
4149 | req->VolatileFileId = wdata->cfile->fid.volatile_fid; | |
4150 | req->WriteChannelInfoOffset = 0; | |
4151 | req->WriteChannelInfoLength = 0; | |
4152 | req->Channel = 0; | |
4153 | req->Offset = cpu_to_le64(wdata->offset); | |
33319141 | 4154 | req->DataOffset = cpu_to_le16( |
f5688a6d | 4155 | offsetof(struct smb2_write_req, Buffer)); |
33319141 | 4156 | req->RemainingBytes = 0; |
d323c246 SF |
4157 | |
4158 | trace_smb3_write_enter(0 /* xid */, wdata->cfile->fid.persistent_fid, | |
4159 | tcon->tid, tcon->ses->Suid, wdata->offset, wdata->bytes); | |
db223a59 LL |
4160 | #ifdef CONFIG_CIFS_SMB_DIRECT |
4161 | /* | |
4162 | * If we want to do a server RDMA read, fill in and append | |
4163 | * smbd_buffer_descriptor_v1 to the end of write request | |
4164 | */ | |
bb4c0419 | 4165 | if (server->rdma && !server->sign && wdata->bytes >= |
db223a59 LL |
4166 | server->smbd_conn->rdma_readwrite_threshold) { |
4167 | ||
4168 | struct smbd_buffer_descriptor_v1 *v1; | |
4169 | bool need_invalidate = server->dialect == SMB30_PROT_ID; | |
4170 | ||
4171 | wdata->mr = smbd_register_mr( | |
4172 | server->smbd_conn, wdata->pages, | |
7cf20bce LL |
4173 | wdata->nr_pages, wdata->page_offset, |
4174 | wdata->tailsz, false, need_invalidate); | |
db223a59 | 4175 | if (!wdata->mr) { |
b7972092 | 4176 | rc = -EAGAIN; |
db223a59 LL |
4177 | goto async_writev_out; |
4178 | } | |
4179 | req->Length = 0; | |
4180 | req->DataOffset = 0; | |
7cf20bce LL |
4181 | if (wdata->nr_pages > 1) |
4182 | req->RemainingBytes = | |
4183 | cpu_to_le32( | |
4184 | (wdata->nr_pages - 1) * wdata->pagesz - | |
4185 | wdata->page_offset + wdata->tailsz | |
4186 | ); | |
4187 | else | |
4188 | req->RemainingBytes = cpu_to_le32(wdata->tailsz); | |
db223a59 LL |
4189 | req->Channel = SMB2_CHANNEL_RDMA_V1_INVALIDATE; |
4190 | if (need_invalidate) | |
4191 | req->Channel = SMB2_CHANNEL_RDMA_V1; | |
4192 | req->WriteChannelInfoOffset = | |
2026b06e | 4193 | cpu_to_le16(offsetof(struct smb2_write_req, Buffer)); |
db223a59 | 4194 | req->WriteChannelInfoLength = |
2026b06e | 4195 | cpu_to_le16(sizeof(struct smbd_buffer_descriptor_v1)); |
db223a59 | 4196 | v1 = (struct smbd_buffer_descriptor_v1 *) &req->Buffer[0]; |
2026b06e SF |
4197 | v1->offset = cpu_to_le64(wdata->mr->mr->iova); |
4198 | v1->token = cpu_to_le32(wdata->mr->mr->rkey); | |
4199 | v1->length = cpu_to_le32(wdata->mr->mr->length); | |
db223a59 LL |
4200 | } |
4201 | #endif | |
c713c877 RS |
4202 | iov[0].iov_len = total_len - 1; |
4203 | iov[0].iov_base = (char *)req; | |
33319141 | 4204 | |
738f9de5 | 4205 | rqst.rq_iov = iov; |
c713c877 | 4206 | rqst.rq_nvec = 1; |
eddb079d | 4207 | rqst.rq_pages = wdata->pages; |
57a929a6 | 4208 | rqst.rq_offset = wdata->page_offset; |
eddb079d JL |
4209 | rqst.rq_npages = wdata->nr_pages; |
4210 | rqst.rq_pagesz = wdata->pagesz; | |
4211 | rqst.rq_tailsz = wdata->tailsz; | |
db223a59 LL |
4212 | #ifdef CONFIG_CIFS_SMB_DIRECT |
4213 | if (wdata->mr) { | |
c713c877 | 4214 | iov[0].iov_len += sizeof(struct smbd_buffer_descriptor_v1); |
db223a59 LL |
4215 | rqst.rq_npages = 0; |
4216 | } | |
4217 | #endif | |
f96637be JP |
4218 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
4219 | wdata->offset, wdata->bytes); | |
33319141 | 4220 | |
db223a59 LL |
4221 | #ifdef CONFIG_CIFS_SMB_DIRECT |
4222 | /* For RDMA read, I/O size is in RemainingBytes not in Length */ | |
4223 | if (!wdata->mr) | |
4224 | req->Length = cpu_to_le32(wdata->bytes); | |
4225 | #else | |
33319141 | 4226 | req->Length = cpu_to_le32(wdata->bytes); |
db223a59 | 4227 | #endif |
33319141 | 4228 | |
335b7b62 | 4229 | if (wdata->credits.value > 0) { |
31473fc4 | 4230 | shdr->CreditCharge = cpu_to_le16(DIV_ROUND_UP(wdata->bytes, |
cb7e9eab | 4231 | SMB2_MAX_BUFFER_SIZE)); |
b983f7e9 PS |
4232 | shdr->CreditRequest = |
4233 | cpu_to_le16(le16_to_cpu(shdr->CreditCharge) + 1); | |
9a1c67e8 PS |
4234 | |
4235 | rc = adjust_credits(server, &wdata->credits, wdata->bytes); | |
4236 | if (rc) | |
335b7b62 | 4237 | goto async_writev_out; |
9a1c67e8 | 4238 | |
7fb8986e | 4239 | flags |= CIFS_HAS_CREDITS; |
cb7e9eab PS |
4240 | } |
4241 | ||
33319141 | 4242 | kref_get(&wdata->refcount); |
9b7c18a2 | 4243 | rc = cifs_call_async(server, &rqst, NULL, smb2_writev_callback, NULL, |
3349c3a7 | 4244 | wdata, flags, &wdata->credits); |
33319141 | 4245 | |
e5d04887 | 4246 | if (rc) { |
eccb4422 SF |
4247 | trace_smb3_write_err(0 /* no xid */, req->PersistentFileId, |
4248 | tcon->tid, tcon->ses->Suid, wdata->offset, | |
4249 | wdata->bytes, rc); | |
4a5c80d7 | 4250 | kref_put(&wdata->refcount, release); |
e5d04887 | 4251 | cifs_stats_fail_inc(tcon, SMB2_WRITE_HE); |
7d42e72f | 4252 | } |
33319141 | 4253 | |
33319141 PS |
4254 | async_writev_out: |
4255 | cifs_small_buf_release(req); | |
33319141 PS |
4256 | return rc; |
4257 | } | |
009d3443 PS |
4258 | |
4259 | /* | |
4260 | * SMB2_write function gets iov pointer to kvec array with n_vec as a length. | |
4261 | * The length field from io_parms must be at least 1 and indicates a number of | |
4262 | * elements with data to write that begins with position 1 in iov array. All | |
4263 | * data length is specified by count. | |
4264 | */ | |
4265 | int | |
4266 | SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, | |
4267 | unsigned int *nbytes, struct kvec *iov, int n_vec) | |
4268 | { | |
40eff45b | 4269 | struct smb_rqst rqst; |
009d3443 PS |
4270 | int rc = 0; |
4271 | struct smb2_write_req *req = NULL; | |
4272 | struct smb2_write_rsp *rsp = NULL; | |
4273 | int resp_buftype; | |
da502f7d | 4274 | struct kvec rsp_iov; |
7fb8986e | 4275 | int flags = 0; |
f5688a6d | 4276 | unsigned int total_len; |
da502f7d | 4277 | |
009d3443 PS |
4278 | *nbytes = 0; |
4279 | ||
4280 | if (n_vec < 1) | |
4281 | return rc; | |
4282 | ||
f5688a6d RS |
4283 | rc = smb2_plain_req_init(SMB2_WRITE, io_parms->tcon, (void **) &req, |
4284 | &total_len); | |
009d3443 PS |
4285 | if (rc) |
4286 | return rc; | |
4287 | ||
4288 | if (io_parms->tcon->ses->server == NULL) | |
4289 | return -ECONNABORTED; | |
4290 | ||
5a77e75f | 4291 | if (smb3_encryption_required(io_parms->tcon)) |
7fb8986e PS |
4292 | flags |= CIFS_TRANSFORM_REQ; |
4293 | ||
f5688a6d | 4294 | req->sync_hdr.ProcessId = cpu_to_le32(io_parms->pid); |
009d3443 PS |
4295 | |
4296 | req->PersistentFileId = io_parms->persistent_fid; | |
4297 | req->VolatileFileId = io_parms->volatile_fid; | |
4298 | req->WriteChannelInfoOffset = 0; | |
4299 | req->WriteChannelInfoLength = 0; | |
4300 | req->Channel = 0; | |
4301 | req->Length = cpu_to_le32(io_parms->length); | |
4302 | req->Offset = cpu_to_le64(io_parms->offset); | |
009d3443 | 4303 | req->DataOffset = cpu_to_le16( |
f5688a6d | 4304 | offsetof(struct smb2_write_req, Buffer)); |
009d3443 PS |
4305 | req->RemainingBytes = 0; |
4306 | ||
d323c246 SF |
4307 | trace_smb3_write_enter(xid, io_parms->persistent_fid, |
4308 | io_parms->tcon->tid, io_parms->tcon->ses->Suid, | |
4309 | io_parms->offset, io_parms->length); | |
4310 | ||
009d3443 | 4311 | iov[0].iov_base = (char *)req; |
f5688a6d RS |
4312 | /* 1 for Buffer */ |
4313 | iov[0].iov_len = total_len - 1; | |
009d3443 | 4314 | |
40eff45b RS |
4315 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
4316 | rqst.rq_iov = iov; | |
4317 | rqst.rq_nvec = n_vec + 1; | |
4318 | ||
4319 | rc = cifs_send_recv(xid, io_parms->tcon->ses, &rqst, | |
f5688a6d | 4320 | &resp_buftype, flags, &rsp_iov); |
da502f7d | 4321 | rsp = (struct smb2_write_rsp *)rsp_iov.iov_base; |
009d3443 PS |
4322 | |
4323 | if (rc) { | |
eccb4422 SF |
4324 | trace_smb3_write_err(xid, req->PersistentFileId, |
4325 | io_parms->tcon->tid, | |
4326 | io_parms->tcon->ses->Suid, | |
4327 | io_parms->offset, io_parms->length, rc); | |
009d3443 | 4328 | cifs_stats_fail_inc(io_parms->tcon, SMB2_WRITE_HE); |
f96637be | 4329 | cifs_dbg(VFS, "Send error in write = %d\n", rc); |
eccb4422 | 4330 | } else { |
009d3443 | 4331 | *nbytes = le32_to_cpu(rsp->DataLength); |
eccb4422 SF |
4332 | trace_smb3_write_done(xid, req->PersistentFileId, |
4333 | io_parms->tcon->tid, | |
4334 | io_parms->tcon->ses->Suid, | |
4335 | io_parms->offset, *nbytes); | |
4336 | } | |
e5d04887 | 4337 | |
6a3eb336 | 4338 | cifs_small_buf_release(req); |
e5d04887 | 4339 | free_rsp_buf(resp_buftype, rsp); |
009d3443 PS |
4340 | return rc; |
4341 | } | |
35143eb5 | 4342 | |
69dda305 | 4343 | int posix_info_sid_size(const void *beg, const void *end) |
349e13ad AA |
4344 | { |
4345 | size_t subauth; | |
4346 | int total; | |
4347 | ||
4348 | if (beg + 1 > end) | |
4349 | return -1; | |
4350 | ||
4351 | subauth = *(u8 *)(beg+1); | |
4352 | if (subauth < 1 || subauth > 15) | |
4353 | return -1; | |
4354 | ||
4355 | total = 1 + 1 + 6 + 4*subauth; | |
4356 | if (beg + total > end) | |
4357 | return -1; | |
4358 | ||
4359 | return total; | |
4360 | } | |
4361 | ||
4362 | int posix_info_parse(const void *beg, const void *end, | |
4363 | struct smb2_posix_info_parsed *out) | |
4364 | ||
4365 | { | |
4366 | int total_len = 0; | |
4367 | int sid_len; | |
4368 | int name_len; | |
4369 | const void *owner_sid; | |
4370 | const void *group_sid; | |
4371 | const void *name; | |
4372 | ||
4373 | /* if no end bound given, assume payload to be correct */ | |
4374 | if (!end) { | |
4375 | const struct smb2_posix_info *p = beg; | |
4376 | ||
4377 | end = beg + le32_to_cpu(p->NextEntryOffset); | |
4378 | /* last element will have a 0 offset, pick a sensible bound */ | |
4379 | if (end == beg) | |
4380 | end += 0xFFFF; | |
4381 | } | |
4382 | ||
4383 | /* check base buf */ | |
4384 | if (beg + sizeof(struct smb2_posix_info) > end) | |
4385 | return -1; | |
4386 | total_len = sizeof(struct smb2_posix_info); | |
4387 | ||
4388 | /* check owner sid */ | |
4389 | owner_sid = beg + total_len; | |
4390 | sid_len = posix_info_sid_size(owner_sid, end); | |
4391 | if (sid_len < 0) | |
4392 | return -1; | |
4393 | total_len += sid_len; | |
4394 | ||
4395 | /* check group sid */ | |
4396 | group_sid = beg + total_len; | |
4397 | sid_len = posix_info_sid_size(group_sid, end); | |
4398 | if (sid_len < 0) | |
4399 | return -1; | |
4400 | total_len += sid_len; | |
4401 | ||
4402 | /* check name len */ | |
4403 | if (beg + total_len + 4 > end) | |
4404 | return -1; | |
4405 | name_len = le32_to_cpu(*(__le32 *)(beg + total_len)); | |
4406 | if (name_len < 1 || name_len > 0xFFFF) | |
4407 | return -1; | |
4408 | total_len += 4; | |
4409 | ||
4410 | /* check name */ | |
4411 | name = beg + total_len; | |
4412 | if (name + name_len > end) | |
4413 | return -1; | |
4414 | total_len += name_len; | |
4415 | ||
4416 | if (out) { | |
4417 | out->base = beg; | |
4418 | out->size = total_len; | |
4419 | out->name_len = name_len; | |
4420 | out->name = name; | |
4421 | memcpy(&out->owner, owner_sid, | |
4422 | posix_info_sid_size(owner_sid, end)); | |
4423 | memcpy(&out->group, group_sid, | |
4424 | posix_info_sid_size(group_sid, end)); | |
4425 | } | |
4426 | return total_len; | |
4427 | } | |
4428 | ||
4429 | static int posix_info_extra_size(const void *beg, const void *end) | |
4430 | { | |
4431 | int len = posix_info_parse(beg, end, NULL); | |
4432 | ||
4433 | if (len < 0) | |
4434 | return -1; | |
4435 | return len - sizeof(struct smb2_posix_info); | |
4436 | } | |
4437 | ||
d324f08d | 4438 | static unsigned int |
3d519bd1 AA |
4439 | num_entries(int infotype, char *bufstart, char *end_of_buf, char **lastentry, |
4440 | size_t size) | |
d324f08d PS |
4441 | { |
4442 | int len; | |
4443 | unsigned int entrycount = 0; | |
4444 | unsigned int next_offset = 0; | |
56446f21 DC |
4445 | char *entryptr; |
4446 | FILE_DIRECTORY_INFO *dir_info; | |
d324f08d PS |
4447 | |
4448 | if (bufstart == NULL) | |
4449 | return 0; | |
4450 | ||
56446f21 | 4451 | entryptr = bufstart; |
d324f08d PS |
4452 | |
4453 | while (1) { | |
56446f21 DC |
4454 | if (entryptr + next_offset < entryptr || |
4455 | entryptr + next_offset > end_of_buf || | |
4456 | entryptr + next_offset + size > end_of_buf) { | |
f96637be | 4457 | cifs_dbg(VFS, "malformed search entry would overflow\n"); |
d324f08d PS |
4458 | break; |
4459 | } | |
4460 | ||
56446f21 DC |
4461 | entryptr = entryptr + next_offset; |
4462 | dir_info = (FILE_DIRECTORY_INFO *)entryptr; | |
4463 | ||
3d519bd1 AA |
4464 | if (infotype == SMB_FIND_FILE_POSIX_INFO) |
4465 | len = posix_info_extra_size(entryptr, end_of_buf); | |
4466 | else | |
4467 | len = le32_to_cpu(dir_info->FileNameLength); | |
4468 | ||
4469 | if (len < 0 || | |
4470 | entryptr + len < entryptr || | |
56446f21 DC |
4471 | entryptr + len > end_of_buf || |
4472 | entryptr + len + size > end_of_buf) { | |
f96637be JP |
4473 | cifs_dbg(VFS, "directory entry name would overflow frame end of buf %p\n", |
4474 | end_of_buf); | |
d324f08d PS |
4475 | break; |
4476 | } | |
4477 | ||
56446f21 | 4478 | *lastentry = entryptr; |
d324f08d PS |
4479 | entrycount++; |
4480 | ||
56446f21 | 4481 | next_offset = le32_to_cpu(dir_info->NextEntryOffset); |
d324f08d PS |
4482 | if (!next_offset) |
4483 | break; | |
4484 | } | |
4485 | ||
4486 | return entrycount; | |
4487 | } | |
4488 | ||
4489 | /* | |
4490 | * Readdir/FindFirst | |
4491 | */ | |
0a17799c RS |
4492 | int SMB2_query_directory_init(const unsigned int xid, |
4493 | struct cifs_tcon *tcon, struct smb_rqst *rqst, | |
4494 | u64 persistent_fid, u64 volatile_fid, | |
4495 | int index, int info_level) | |
d324f08d | 4496 | { |
0a17799c | 4497 | struct TCP_Server_Info *server = tcon->ses->server; |
d324f08d | 4498 | struct smb2_query_directory_req *req; |
d324f08d | 4499 | unsigned char *bufptr; |
d324f08d | 4500 | __le16 asteriks = cpu_to_le16('*'); |
0a17799c RS |
4501 | unsigned int output_size = CIFSMaxBufSize - |
4502 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
4503 | MAX_SMB2_CLOSE_RESPONSE_SIZE; | |
7c00c3a6 | 4504 | unsigned int total_len; |
0a17799c RS |
4505 | struct kvec *iov = rqst->rq_iov; |
4506 | int len, rc; | |
d324f08d | 4507 | |
7c00c3a6 RS |
4508 | rc = smb2_plain_req_init(SMB2_QUERY_DIRECTORY, tcon, (void **) &req, |
4509 | &total_len); | |
d324f08d PS |
4510 | if (rc) |
4511 | return rc; | |
4512 | ||
0a17799c | 4513 | switch (info_level) { |
d324f08d PS |
4514 | case SMB_FIND_FILE_DIRECTORY_INFO: |
4515 | req->FileInformationClass = FILE_DIRECTORY_INFORMATION; | |
d324f08d PS |
4516 | break; |
4517 | case SMB_FIND_FILE_ID_FULL_DIR_INFO: | |
4518 | req->FileInformationClass = FILEID_FULL_DIRECTORY_INFORMATION; | |
d324f08d | 4519 | break; |
3d519bd1 AA |
4520 | case SMB_FIND_FILE_POSIX_INFO: |
4521 | req->FileInformationClass = SMB_FIND_FILE_POSIX_INFO; | |
4522 | break; | |
d324f08d | 4523 | default: |
3175eb9b | 4524 | cifs_tcon_dbg(VFS, "info level %u isn't supported\n", |
0a17799c RS |
4525 | info_level); |
4526 | return -EINVAL; | |
d324f08d PS |
4527 | } |
4528 | ||
4529 | req->FileIndex = cpu_to_le32(index); | |
4530 | req->PersistentFileId = persistent_fid; | |
4531 | req->VolatileFileId = volatile_fid; | |
4532 | ||
4533 | len = 0x2; | |
4534 | bufptr = req->Buffer; | |
4535 | memcpy(bufptr, &asteriks, len); | |
4536 | ||
4537 | req->FileNameOffset = | |
7c00c3a6 | 4538 | cpu_to_le16(sizeof(struct smb2_query_directory_req) - 1); |
d324f08d PS |
4539 | req->FileNameLength = cpu_to_le16(len); |
4540 | /* | |
4541 | * BB could be 30 bytes or so longer if we used SMB2 specific | |
4542 | * buffer lengths, but this is safe and close enough. | |
4543 | */ | |
4544 | output_size = min_t(unsigned int, output_size, server->maxBuf); | |
4545 | output_size = min_t(unsigned int, output_size, 2 << 15); | |
4546 | req->OutputBufferLength = cpu_to_le32(output_size); | |
4547 | ||
4548 | iov[0].iov_base = (char *)req; | |
7c00c3a6 RS |
4549 | /* 1 for Buffer */ |
4550 | iov[0].iov_len = total_len - 1; | |
d324f08d PS |
4551 | |
4552 | iov[1].iov_base = (char *)(req->Buffer); | |
4553 | iov[1].iov_len = len; | |
4554 | ||
0a17799c RS |
4555 | trace_smb3_query_dir_enter(xid, persistent_fid, tcon->tid, |
4556 | tcon->ses->Suid, index, output_size); | |
4557 | ||
4558 | return 0; | |
4559 | } | |
4560 | ||
4561 | void SMB2_query_directory_free(struct smb_rqst *rqst) | |
4562 | { | |
4563 | if (rqst && rqst->rq_iov) { | |
4564 | cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */ | |
4565 | } | |
4566 | } | |
4567 | ||
af08f9e7 RS |
4568 | int |
4569 | smb2_parse_query_directory(struct cifs_tcon *tcon, | |
4570 | struct kvec *rsp_iov, | |
4571 | int resp_buftype, | |
4572 | struct cifs_search_info *srch_inf) | |
4573 | { | |
4574 | struct smb2_query_directory_rsp *rsp; | |
4575 | size_t info_buf_size; | |
4576 | char *end_of_smb; | |
4577 | int rc; | |
4578 | ||
4579 | rsp = (struct smb2_query_directory_rsp *)rsp_iov->iov_base; | |
4580 | ||
4581 | switch (srch_inf->info_level) { | |
4582 | case SMB_FIND_FILE_DIRECTORY_INFO: | |
4583 | info_buf_size = sizeof(FILE_DIRECTORY_INFO) - 1; | |
4584 | break; | |
4585 | case SMB_FIND_FILE_ID_FULL_DIR_INFO: | |
4586 | info_buf_size = sizeof(SEARCH_ID_FULL_DIR_INFO) - 1; | |
4587 | break; | |
3d519bd1 AA |
4588 | case SMB_FIND_FILE_POSIX_INFO: |
4589 | /* note that posix payload are variable size */ | |
4590 | info_buf_size = sizeof(struct smb2_posix_info); | |
4591 | break; | |
af08f9e7 RS |
4592 | default: |
4593 | cifs_tcon_dbg(VFS, "info level %u isn't supported\n", | |
4594 | srch_inf->info_level); | |
4595 | return -EINVAL; | |
4596 | } | |
4597 | ||
4598 | rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), | |
4599 | le32_to_cpu(rsp->OutputBufferLength), rsp_iov, | |
4600 | info_buf_size); | |
3d519bd1 AA |
4601 | if (rc) { |
4602 | cifs_tcon_dbg(VFS, "bad info payload"); | |
af08f9e7 | 4603 | return rc; |
3d519bd1 | 4604 | } |
af08f9e7 RS |
4605 | |
4606 | srch_inf->unicode = true; | |
4607 | ||
4608 | if (srch_inf->ntwrk_buf_start) { | |
4609 | if (srch_inf->smallBuf) | |
4610 | cifs_small_buf_release(srch_inf->ntwrk_buf_start); | |
4611 | else | |
4612 | cifs_buf_release(srch_inf->ntwrk_buf_start); | |
4613 | } | |
4614 | srch_inf->ntwrk_buf_start = (char *)rsp; | |
4615 | srch_inf->srch_entries_start = srch_inf->last_entry = | |
4616 | (char *)rsp + le16_to_cpu(rsp->OutputBufferOffset); | |
4617 | end_of_smb = rsp_iov->iov_len + (char *)rsp; | |
3d519bd1 AA |
4618 | |
4619 | srch_inf->entries_in_buffer = num_entries( | |
4620 | srch_inf->info_level, | |
4621 | srch_inf->srch_entries_start, | |
4622 | end_of_smb, | |
4623 | &srch_inf->last_entry, | |
4624 | info_buf_size); | |
4625 | ||
af08f9e7 RS |
4626 | srch_inf->index_of_last_entry += srch_inf->entries_in_buffer; |
4627 | cifs_dbg(FYI, "num entries %d last_index %lld srch start %p srch end %p\n", | |
4628 | srch_inf->entries_in_buffer, srch_inf->index_of_last_entry, | |
4629 | srch_inf->srch_entries_start, srch_inf->last_entry); | |
4630 | if (resp_buftype == CIFS_LARGE_BUFFER) | |
4631 | srch_inf->smallBuf = false; | |
4632 | else if (resp_buftype == CIFS_SMALL_BUFFER) | |
4633 | srch_inf->smallBuf = true; | |
4634 | else | |
4635 | cifs_tcon_dbg(VFS, "illegal search buffer type\n"); | |
4636 | ||
4637 | return 0; | |
4638 | } | |
4639 | ||
0a17799c RS |
4640 | int |
4641 | SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon, | |
4642 | u64 persistent_fid, u64 volatile_fid, int index, | |
4643 | struct cifs_search_info *srch_inf) | |
4644 | { | |
4645 | struct smb_rqst rqst; | |
4646 | struct kvec iov[SMB2_QUERY_DIRECTORY_IOV_SIZE]; | |
4647 | struct smb2_query_directory_rsp *rsp = NULL; | |
4648 | int resp_buftype = CIFS_NO_BUFFER; | |
4649 | struct kvec rsp_iov; | |
4650 | int rc = 0; | |
0a17799c | 4651 | struct cifs_ses *ses = tcon->ses; |
0a17799c RS |
4652 | int flags = 0; |
4653 | ||
c4985c3d | 4654 | if (!ses || !(ses->server)) |
0a17799c RS |
4655 | return -EIO; |
4656 | ||
4657 | if (smb3_encryption_required(tcon)) | |
4658 | flags |= CIFS_TRANSFORM_REQ; | |
4659 | ||
40eff45b | 4660 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
0a17799c | 4661 | memset(&iov, 0, sizeof(iov)); |
40eff45b | 4662 | rqst.rq_iov = iov; |
0a17799c | 4663 | rqst.rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE; |
40eff45b | 4664 | |
0a17799c RS |
4665 | rc = SMB2_query_directory_init(xid, tcon, &rqst, persistent_fid, |
4666 | volatile_fid, index, | |
4667 | srch_inf->info_level); | |
4668 | if (rc) | |
4669 | goto qdir_exit; | |
d323c246 | 4670 | |
40eff45b | 4671 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); |
da502f7d | 4672 | rsp = (struct smb2_query_directory_rsp *)rsp_iov.iov_base; |
e5d04887 | 4673 | |
d324f08d | 4674 | if (rc) { |
31473fc4 | 4675 | if (rc == -ENODATA && |
49f466bd | 4676 | rsp->sync_hdr.Status == STATUS_NO_MORE_FILES) { |
adb3b4e9 SF |
4677 | trace_smb3_query_dir_done(xid, persistent_fid, |
4678 | tcon->tid, tcon->ses->Suid, index, 0); | |
52755808 PS |
4679 | srch_inf->endOfSearch = true; |
4680 | rc = 0; | |
adb3b4e9 SF |
4681 | } else { |
4682 | trace_smb3_query_dir_err(xid, persistent_fid, tcon->tid, | |
4683 | tcon->ses->Suid, index, 0, rc); | |
8e6e72ae | 4684 | cifs_stats_fail_inc(tcon, SMB2_QUERY_DIRECTORY_HE); |
adb3b4e9 | 4685 | } |
d324f08d PS |
4686 | goto qdir_exit; |
4687 | } | |
d324f08d | 4688 | |
af08f9e7 RS |
4689 | rc = smb2_parse_query_directory(tcon, &rsp_iov, resp_buftype, |
4690 | srch_inf); | |
adb3b4e9 SF |
4691 | if (rc) { |
4692 | trace_smb3_query_dir_err(xid, persistent_fid, tcon->tid, | |
4693 | tcon->ses->Suid, index, 0, rc); | |
d324f08d | 4694 | goto qdir_exit; |
adb3b4e9 | 4695 | } |
0a17799c RS |
4696 | resp_buftype = CIFS_NO_BUFFER; |
4697 | ||
adb3b4e9 SF |
4698 | trace_smb3_query_dir_done(xid, persistent_fid, tcon->tid, |
4699 | tcon->ses->Suid, index, srch_inf->entries_in_buffer); | |
d324f08d PS |
4700 | |
4701 | qdir_exit: | |
0a17799c | 4702 | SMB2_query_directory_free(&rqst); |
d324f08d PS |
4703 | free_rsp_buf(resp_buftype, rsp); |
4704 | return rc; | |
4705 | } | |
4706 | ||
ba8ca116 RS |
4707 | int |
4708 | SMB2_set_info_init(struct cifs_tcon *tcon, struct smb_rqst *rqst, | |
dac95340 | 4709 | u64 persistent_fid, u64 volatile_fid, u32 pid, u8 info_class, |
ba8ca116 | 4710 | u8 info_type, u32 additional_info, |
dac95340 | 4711 | void **data, unsigned int *size) |
35143eb5 PS |
4712 | { |
4713 | struct smb2_set_info_req *req; | |
ba8ca116 RS |
4714 | struct kvec *iov = rqst->rq_iov; |
4715 | unsigned int i, total_len; | |
4716 | int rc; | |
35143eb5 | 4717 | |
2fc803ef | 4718 | rc = smb2_plain_req_init(SMB2_SET_INFO, tcon, (void **) &req, &total_len); |
ba8ca116 | 4719 | if (rc) |
35143eb5 | 4720 | return rc; |
7fb8986e | 4721 | |
2fc803ef | 4722 | req->sync_hdr.ProcessId = cpu_to_le32(pid); |
dac95340 | 4723 | req->InfoType = info_type; |
35143eb5 PS |
4724 | req->FileInfoClass = info_class; |
4725 | req->PersistentFileId = persistent_fid; | |
4726 | req->VolatileFileId = volatile_fid; | |
dac95340 | 4727 | req->AdditionalInformation = cpu_to_le32(additional_info); |
35143eb5 | 4728 | |
35143eb5 | 4729 | req->BufferOffset = |
2fc803ef | 4730 | cpu_to_le16(sizeof(struct smb2_set_info_req) - 1); |
35143eb5 PS |
4731 | req->BufferLength = cpu_to_le32(*size); |
4732 | ||
35143eb5 | 4733 | memcpy(req->Buffer, *data, *size); |
2fc803ef | 4734 | total_len += *size; |
35143eb5 PS |
4735 | |
4736 | iov[0].iov_base = (char *)req; | |
2fc803ef RS |
4737 | /* 1 for Buffer */ |
4738 | iov[0].iov_len = total_len - 1; | |
35143eb5 | 4739 | |
ba8ca116 | 4740 | for (i = 1; i < rqst->rq_nvec; i++) { |
35143eb5 PS |
4741 | le32_add_cpu(&req->BufferLength, size[i]); |
4742 | iov[i].iov_base = (char *)data[i]; | |
4743 | iov[i].iov_len = size[i]; | |
4744 | } | |
4745 | ||
ba8ca116 RS |
4746 | return 0; |
4747 | } | |
4748 | ||
4749 | void | |
4750 | SMB2_set_info_free(struct smb_rqst *rqst) | |
4751 | { | |
32a1fb36 RS |
4752 | if (rqst && rqst->rq_iov) |
4753 | cifs_buf_release(rqst->rq_iov[0].iov_base); /* request */ | |
ba8ca116 RS |
4754 | } |
4755 | ||
4756 | static int | |
4757 | send_set_info(const unsigned int xid, struct cifs_tcon *tcon, | |
4758 | u64 persistent_fid, u64 volatile_fid, u32 pid, u8 info_class, | |
4759 | u8 info_type, u32 additional_info, unsigned int num, | |
4760 | void **data, unsigned int *size) | |
4761 | { | |
4762 | struct smb_rqst rqst; | |
4763 | struct smb2_set_info_rsp *rsp = NULL; | |
4764 | struct kvec *iov; | |
4765 | struct kvec rsp_iov; | |
4766 | int rc = 0; | |
4767 | int resp_buftype; | |
4768 | struct cifs_ses *ses = tcon->ses; | |
4769 | int flags = 0; | |
4770 | ||
4771 | if (!ses || !(ses->server)) | |
4772 | return -EIO; | |
4773 | ||
4774 | if (!num) | |
4775 | return -EINVAL; | |
4776 | ||
4777 | if (smb3_encryption_required(tcon)) | |
4778 | flags |= CIFS_TRANSFORM_REQ; | |
4779 | ||
4780 | iov = kmalloc_array(num, sizeof(struct kvec), GFP_KERNEL); | |
4781 | if (!iov) | |
4782 | return -ENOMEM; | |
4783 | ||
40eff45b RS |
4784 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
4785 | rqst.rq_iov = iov; | |
4786 | rqst.rq_nvec = num; | |
4787 | ||
ba8ca116 RS |
4788 | rc = SMB2_set_info_init(tcon, &rqst, persistent_fid, volatile_fid, pid, |
4789 | info_class, info_type, additional_info, | |
4790 | data, size); | |
4791 | if (rc) { | |
4792 | kfree(iov); | |
4793 | return rc; | |
4794 | } | |
4795 | ||
4796 | ||
40eff45b | 4797 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, |
2fc803ef | 4798 | &rsp_iov); |
ba8ca116 | 4799 | SMB2_set_info_free(&rqst); |
da502f7d | 4800 | rsp = (struct smb2_set_info_rsp *)rsp_iov.iov_base; |
35143eb5 | 4801 | |
eccb4422 | 4802 | if (rc != 0) { |
35143eb5 | 4803 | cifs_stats_fail_inc(tcon, SMB2_SET_INFO_HE); |
eccb4422 SF |
4804 | trace_smb3_set_info_err(xid, persistent_fid, tcon->tid, |
4805 | ses->Suid, info_class, (__u32)info_type, rc); | |
4806 | } | |
7d3fb24b | 4807 | |
35143eb5 PS |
4808 | free_rsp_buf(resp_buftype, rsp); |
4809 | kfree(iov); | |
4810 | return rc; | |
4811 | } | |
4812 | ||
c839ff24 PS |
4813 | int |
4814 | SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, | |
3764cbd1 | 4815 | u64 volatile_fid, u32 pid, __le64 *eof) |
c839ff24 PS |
4816 | { |
4817 | struct smb2_file_eof_info info; | |
4818 | void *data; | |
4819 | unsigned int size; | |
4820 | ||
4821 | info.EndOfFile = *eof; | |
4822 | ||
4823 | data = &info; | |
4824 | size = sizeof(struct smb2_file_eof_info); | |
4825 | ||
3764cbd1 | 4826 | return send_set_info(xid, tcon, persistent_fid, volatile_fid, |
dac95340 SP |
4827 | pid, FILE_END_OF_FILE_INFORMATION, SMB2_O_INFO_FILE, |
4828 | 0, 1, &data, &size); | |
c839ff24 | 4829 | } |
1feeaac7 | 4830 | |
dac95340 SP |
4831 | int |
4832 | SMB2_set_acl(const unsigned int xid, struct cifs_tcon *tcon, | |
4833 | u64 persistent_fid, u64 volatile_fid, | |
4834 | struct cifs_ntsd *pnntsd, int pacllen, int aclflag) | |
4835 | { | |
4836 | return send_set_info(xid, tcon, persistent_fid, volatile_fid, | |
4837 | current->tgid, 0, SMB2_O_INFO_SECURITY, aclflag, | |
4838 | 1, (void **)&pnntsd, &pacllen); | |
1feeaac7 | 4839 | } |
983c88a4 | 4840 | |
5517554e RS |
4841 | int |
4842 | SMB2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, | |
4843 | u64 persistent_fid, u64 volatile_fid, | |
4844 | struct smb2_file_full_ea_info *buf, int len) | |
4845 | { | |
4846 | return send_set_info(xid, tcon, persistent_fid, volatile_fid, | |
4847 | current->tgid, FILE_FULL_EA_INFORMATION, SMB2_O_INFO_FILE, | |
4848 | 0, 1, (void **)&buf, &len); | |
4849 | } | |
4850 | ||
983c88a4 PS |
4851 | int |
4852 | SMB2_oplock_break(const unsigned int xid, struct cifs_tcon *tcon, | |
4853 | const u64 persistent_fid, const u64 volatile_fid, | |
4854 | __u8 oplock_level) | |
4855 | { | |
40eff45b | 4856 | struct smb_rqst rqst; |
983c88a4 | 4857 | int rc; |
0d5a288d | 4858 | struct smb2_oplock_break *req = NULL; |
21ad9487 | 4859 | struct cifs_ses *ses = tcon->ses; |
7fb8986e | 4860 | int flags = CIFS_OBREAK_OP; |
21ad9487 RS |
4861 | unsigned int total_len; |
4862 | struct kvec iov[1]; | |
4863 | struct kvec rsp_iov; | |
4864 | int resp_buf_type; | |
983c88a4 | 4865 | |
f96637be | 4866 | cifs_dbg(FYI, "SMB2_oplock_break\n"); |
21ad9487 RS |
4867 | rc = smb2_plain_req_init(SMB2_OPLOCK_BREAK, tcon, (void **) &req, |
4868 | &total_len); | |
983c88a4 PS |
4869 | if (rc) |
4870 | return rc; | |
4871 | ||
5a77e75f | 4872 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
4873 | flags |= CIFS_TRANSFORM_REQ; |
4874 | ||
983c88a4 PS |
4875 | req->VolatileFid = volatile_fid; |
4876 | req->PersistentFid = persistent_fid; | |
4877 | req->OplockLevel = oplock_level; | |
21ad9487 | 4878 | req->sync_hdr.CreditRequest = cpu_to_le16(1); |
983c88a4 | 4879 | |
392e1c5d | 4880 | flags |= CIFS_NO_RSP_BUF; |
21ad9487 RS |
4881 | |
4882 | iov[0].iov_base = (char *)req; | |
4883 | iov[0].iov_len = total_len; | |
4884 | ||
40eff45b RS |
4885 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
4886 | rqst.rq_iov = iov; | |
4887 | rqst.rq_nvec = 1; | |
4888 | ||
4889 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buf_type, flags, &rsp_iov); | |
da502f7d | 4890 | cifs_small_buf_release(req); |
983c88a4 PS |
4891 | |
4892 | if (rc) { | |
4893 | cifs_stats_fail_inc(tcon, SMB2_OPLOCK_BREAK_HE); | |
f96637be | 4894 | cifs_dbg(FYI, "Send error in Oplock Break = %d\n", rc); |
983c88a4 PS |
4895 | } |
4896 | ||
4897 | return rc; | |
4898 | } | |
6fc05c25 | 4899 | |
730928c8 RS |
4900 | void |
4901 | smb2_copy_fs_info_to_kstatfs(struct smb2_fs_full_size_info *pfs_inf, | |
4902 | struct kstatfs *kst) | |
6fc05c25 PS |
4903 | { |
4904 | kst->f_bsize = le32_to_cpu(pfs_inf->BytesPerSector) * | |
4905 | le32_to_cpu(pfs_inf->SectorsPerAllocationUnit); | |
4906 | kst->f_blocks = le64_to_cpu(pfs_inf->TotalAllocationUnits); | |
42bec214 SP |
4907 | kst->f_bfree = kst->f_bavail = |
4908 | le64_to_cpu(pfs_inf->CallerAvailableAllocationUnits); | |
6fc05c25 PS |
4909 | return; |
4910 | } | |
4911 | ||
2d304217 SF |
4912 | static void |
4913 | copy_posix_fs_info_to_kstatfs(FILE_SYSTEM_POSIX_INFO *response_data, | |
4914 | struct kstatfs *kst) | |
4915 | { | |
4916 | kst->f_bsize = le32_to_cpu(response_data->BlockSize); | |
4917 | kst->f_blocks = le64_to_cpu(response_data->TotalBlocks); | |
4918 | kst->f_bfree = le64_to_cpu(response_data->BlocksAvail); | |
4919 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) | |
4920 | kst->f_bavail = kst->f_bfree; | |
4921 | else | |
4922 | kst->f_bavail = le64_to_cpu(response_data->UserBlocksAvail); | |
4923 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) | |
4924 | kst->f_files = le64_to_cpu(response_data->TotalFileNodes); | |
4925 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) | |
4926 | kst->f_ffree = le64_to_cpu(response_data->FreeFileNodes); | |
4927 | ||
4928 | return; | |
4929 | } | |
2d304217 | 4930 | |
6fc05c25 PS |
4931 | static int |
4932 | build_qfs_info_req(struct kvec *iov, struct cifs_tcon *tcon, int level, | |
4933 | int outbuf_len, u64 persistent_fid, u64 volatile_fid) | |
4934 | { | |
4935 | int rc; | |
4936 | struct smb2_query_info_req *req; | |
b2fb7fec | 4937 | unsigned int total_len; |
6fc05c25 | 4938 | |
f96637be | 4939 | cifs_dbg(FYI, "Query FSInfo level %d\n", level); |
6fc05c25 PS |
4940 | |
4941 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
4942 | return -EIO; | |
4943 | ||
b2fb7fec RS |
4944 | rc = smb2_plain_req_init(SMB2_QUERY_INFO, tcon, (void **) &req, |
4945 | &total_len); | |
6fc05c25 PS |
4946 | if (rc) |
4947 | return rc; | |
4948 | ||
4949 | req->InfoType = SMB2_O_INFO_FILESYSTEM; | |
4950 | req->FileInfoClass = level; | |
4951 | req->PersistentFileId = persistent_fid; | |
4952 | req->VolatileFileId = volatile_fid; | |
b2fb7fec | 4953 | /* 1 for pad */ |
6fc05c25 | 4954 | req->InputBufferOffset = |
b2fb7fec | 4955 | cpu_to_le16(sizeof(struct smb2_query_info_req) - 1); |
6fc05c25 | 4956 | req->OutputBufferLength = cpu_to_le32( |
1fc6ad2f | 4957 | outbuf_len + sizeof(struct smb2_query_info_rsp) - 1); |
6fc05c25 PS |
4958 | |
4959 | iov->iov_base = (char *)req; | |
b2fb7fec | 4960 | iov->iov_len = total_len; |
6fc05c25 PS |
4961 | return 0; |
4962 | } | |
4963 | ||
2d304217 SF |
4964 | int |
4965 | SMB311_posix_qfs_info(const unsigned int xid, struct cifs_tcon *tcon, | |
4966 | u64 persistent_fid, u64 volatile_fid, struct kstatfs *fsdata) | |
4967 | { | |
4968 | struct smb_rqst rqst; | |
4969 | struct smb2_query_info_rsp *rsp = NULL; | |
4970 | struct kvec iov; | |
4971 | struct kvec rsp_iov; | |
4972 | int rc = 0; | |
4973 | int resp_buftype; | |
4974 | struct cifs_ses *ses = tcon->ses; | |
4975 | FILE_SYSTEM_POSIX_INFO *info = NULL; | |
4976 | int flags = 0; | |
4977 | ||
4978 | rc = build_qfs_info_req(&iov, tcon, FS_POSIX_INFORMATION, | |
4979 | sizeof(FILE_SYSTEM_POSIX_INFO), | |
4980 | persistent_fid, volatile_fid); | |
4981 | if (rc) | |
4982 | return rc; | |
4983 | ||
4984 | if (smb3_encryption_required(tcon)) | |
4985 | flags |= CIFS_TRANSFORM_REQ; | |
4986 | ||
4987 | memset(&rqst, 0, sizeof(struct smb_rqst)); | |
4988 | rqst.rq_iov = &iov; | |
4989 | rqst.rq_nvec = 1; | |
4990 | ||
4991 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); | |
4992 | cifs_small_buf_release(iov.iov_base); | |
4993 | if (rc) { | |
4994 | cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); | |
4995 | goto posix_qfsinf_exit; | |
4996 | } | |
4997 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; | |
4998 | ||
4999 | info = (FILE_SYSTEM_POSIX_INFO *)( | |
5000 | le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp); | |
730928c8 RS |
5001 | rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), |
5002 | le32_to_cpu(rsp->OutputBufferLength), &rsp_iov, | |
5003 | sizeof(FILE_SYSTEM_POSIX_INFO)); | |
2d304217 SF |
5004 | if (!rc) |
5005 | copy_posix_fs_info_to_kstatfs(info, fsdata); | |
5006 | ||
5007 | posix_qfsinf_exit: | |
5008 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); | |
5009 | return rc; | |
5010 | } | |
2d304217 | 5011 | |
6fc05c25 PS |
5012 | int |
5013 | SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon, | |
5014 | u64 persistent_fid, u64 volatile_fid, struct kstatfs *fsdata) | |
5015 | { | |
40eff45b | 5016 | struct smb_rqst rqst; |
6fc05c25 PS |
5017 | struct smb2_query_info_rsp *rsp = NULL; |
5018 | struct kvec iov; | |
da502f7d | 5019 | struct kvec rsp_iov; |
6fc05c25 PS |
5020 | int rc = 0; |
5021 | int resp_buftype; | |
5022 | struct cifs_ses *ses = tcon->ses; | |
5023 | struct smb2_fs_full_size_info *info = NULL; | |
7fb8986e | 5024 | int flags = 0; |
6fc05c25 PS |
5025 | |
5026 | rc = build_qfs_info_req(&iov, tcon, FS_FULL_SIZE_INFORMATION, | |
5027 | sizeof(struct smb2_fs_full_size_info), | |
5028 | persistent_fid, volatile_fid); | |
5029 | if (rc) | |
5030 | return rc; | |
5031 | ||
5a77e75f | 5032 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
5033 | flags |= CIFS_TRANSFORM_REQ; |
5034 | ||
40eff45b RS |
5035 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
5036 | rqst.rq_iov = &iov; | |
5037 | rqst.rq_nvec = 1; | |
5038 | ||
5039 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d | 5040 | cifs_small_buf_release(iov.iov_base); |
6fc05c25 PS |
5041 | if (rc) { |
5042 | cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); | |
34f62640 | 5043 | goto qfsinf_exit; |
6fc05c25 | 5044 | } |
da502f7d | 5045 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; |
6fc05c25 | 5046 | |
1fc6ad2f | 5047 | info = (struct smb2_fs_full_size_info *)( |
49f466bd | 5048 | le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp); |
730928c8 RS |
5049 | rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), |
5050 | le32_to_cpu(rsp->OutputBufferLength), &rsp_iov, | |
5051 | sizeof(struct smb2_fs_full_size_info)); | |
6fc05c25 | 5052 | if (!rc) |
730928c8 | 5053 | smb2_copy_fs_info_to_kstatfs(info, fsdata); |
6fc05c25 | 5054 | |
34f62640 | 5055 | qfsinf_exit: |
da502f7d | 5056 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); |
34f62640 SF |
5057 | return rc; |
5058 | } | |
5059 | ||
5060 | int | |
5061 | SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon, | |
2167114c | 5062 | u64 persistent_fid, u64 volatile_fid, int level) |
34f62640 | 5063 | { |
40eff45b | 5064 | struct smb_rqst rqst; |
34f62640 SF |
5065 | struct smb2_query_info_rsp *rsp = NULL; |
5066 | struct kvec iov; | |
da502f7d | 5067 | struct kvec rsp_iov; |
34f62640 | 5068 | int rc = 0; |
2167114c | 5069 | int resp_buftype, max_len, min_len; |
34f62640 SF |
5070 | struct cifs_ses *ses = tcon->ses; |
5071 | unsigned int rsp_len, offset; | |
7fb8986e | 5072 | int flags = 0; |
34f62640 | 5073 | |
2167114c SF |
5074 | if (level == FS_DEVICE_INFORMATION) { |
5075 | max_len = sizeof(FILE_SYSTEM_DEVICE_INFO); | |
5076 | min_len = sizeof(FILE_SYSTEM_DEVICE_INFO); | |
5077 | } else if (level == FS_ATTRIBUTE_INFORMATION) { | |
5078 | max_len = sizeof(FILE_SYSTEM_ATTRIBUTE_INFO); | |
5079 | min_len = MIN_FS_ATTR_INFO_SIZE; | |
af6a12ea SF |
5080 | } else if (level == FS_SECTOR_SIZE_INFORMATION) { |
5081 | max_len = sizeof(struct smb3_fs_ss_info); | |
5082 | min_len = sizeof(struct smb3_fs_ss_info); | |
21ba3845 SF |
5083 | } else if (level == FS_VOLUME_INFORMATION) { |
5084 | max_len = sizeof(struct smb3_fs_vol_info) + MAX_VOL_LABEL_LEN; | |
5085 | min_len = sizeof(struct smb3_fs_vol_info); | |
2167114c | 5086 | } else { |
af6a12ea | 5087 | cifs_dbg(FYI, "Invalid qfsinfo level %d\n", level); |
2167114c SF |
5088 | return -EINVAL; |
5089 | } | |
5090 | ||
5091 | rc = build_qfs_info_req(&iov, tcon, level, max_len, | |
34f62640 SF |
5092 | persistent_fid, volatile_fid); |
5093 | if (rc) | |
5094 | return rc; | |
5095 | ||
5a77e75f | 5096 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
5097 | flags |= CIFS_TRANSFORM_REQ; |
5098 | ||
40eff45b RS |
5099 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
5100 | rqst.rq_iov = &iov; | |
5101 | rqst.rq_nvec = 1; | |
5102 | ||
5103 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d | 5104 | cifs_small_buf_release(iov.iov_base); |
34f62640 SF |
5105 | if (rc) { |
5106 | cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); | |
5107 | goto qfsattr_exit; | |
5108 | } | |
da502f7d | 5109 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; |
34f62640 SF |
5110 | |
5111 | rsp_len = le32_to_cpu(rsp->OutputBufferLength); | |
5112 | offset = le16_to_cpu(rsp->OutputBufferOffset); | |
730928c8 | 5113 | rc = smb2_validate_iov(offset, rsp_len, &rsp_iov, min_len); |
2167114c SF |
5114 | if (rc) |
5115 | goto qfsattr_exit; | |
5116 | ||
5117 | if (level == FS_ATTRIBUTE_INFORMATION) | |
1fc6ad2f | 5118 | memcpy(&tcon->fsAttrInfo, offset |
49f466bd | 5119 | + (char *)rsp, min_t(unsigned int, |
2167114c SF |
5120 | rsp_len, max_len)); |
5121 | else if (level == FS_DEVICE_INFORMATION) | |
1fc6ad2f | 5122 | memcpy(&tcon->fsDevInfo, offset |
49f466bd | 5123 | + (char *)rsp, sizeof(FILE_SYSTEM_DEVICE_INFO)); |
af6a12ea SF |
5124 | else if (level == FS_SECTOR_SIZE_INFORMATION) { |
5125 | struct smb3_fs_ss_info *ss_info = (struct smb3_fs_ss_info *) | |
1fc6ad2f | 5126 | (offset + (char *)rsp); |
af6a12ea SF |
5127 | tcon->ss_flags = le32_to_cpu(ss_info->Flags); |
5128 | tcon->perf_sector_size = | |
5129 | le32_to_cpu(ss_info->PhysicalBytesPerSectorForPerf); | |
21ba3845 SF |
5130 | } else if (level == FS_VOLUME_INFORMATION) { |
5131 | struct smb3_fs_vol_info *vol_info = (struct smb3_fs_vol_info *) | |
5132 | (offset + (char *)rsp); | |
5133 | tcon->vol_serial_number = vol_info->VolumeSerialNumber; | |
5134 | tcon->vol_create_time = vol_info->VolumeCreationTime; | |
af6a12ea | 5135 | } |
34f62640 SF |
5136 | |
5137 | qfsattr_exit: | |
da502f7d | 5138 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); |
6fc05c25 PS |
5139 | return rc; |
5140 | } | |
f7ba7fe6 PS |
5141 | |
5142 | int | |
5143 | smb2_lockv(const unsigned int xid, struct cifs_tcon *tcon, | |
5144 | const __u64 persist_fid, const __u64 volatile_fid, const __u32 pid, | |
5145 | const __u32 num_lock, struct smb2_lock_element *buf) | |
5146 | { | |
40eff45b | 5147 | struct smb_rqst rqst; |
f7ba7fe6 PS |
5148 | int rc = 0; |
5149 | struct smb2_lock_req *req = NULL; | |
5150 | struct kvec iov[2]; | |
da502f7d | 5151 | struct kvec rsp_iov; |
f7ba7fe6 PS |
5152 | int resp_buf_type; |
5153 | unsigned int count; | |
392e1c5d | 5154 | int flags = CIFS_NO_RSP_BUF; |
ced93679 | 5155 | unsigned int total_len; |
f7ba7fe6 | 5156 | |
f96637be | 5157 | cifs_dbg(FYI, "smb2_lockv num lock %d\n", num_lock); |
f7ba7fe6 | 5158 | |
ced93679 | 5159 | rc = smb2_plain_req_init(SMB2_LOCK, tcon, (void **) &req, &total_len); |
f7ba7fe6 PS |
5160 | if (rc) |
5161 | return rc; | |
5162 | ||
5a77e75f | 5163 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
5164 | flags |= CIFS_TRANSFORM_REQ; |
5165 | ||
ced93679 | 5166 | req->sync_hdr.ProcessId = cpu_to_le32(pid); |
f7ba7fe6 PS |
5167 | req->LockCount = cpu_to_le16(num_lock); |
5168 | ||
5169 | req->PersistentFileId = persist_fid; | |
5170 | req->VolatileFileId = volatile_fid; | |
5171 | ||
5172 | count = num_lock * sizeof(struct smb2_lock_element); | |
f7ba7fe6 PS |
5173 | |
5174 | iov[0].iov_base = (char *)req; | |
ced93679 | 5175 | iov[0].iov_len = total_len - sizeof(struct smb2_lock_element); |
f7ba7fe6 PS |
5176 | iov[1].iov_base = (char *)buf; |
5177 | iov[1].iov_len = count; | |
5178 | ||
5179 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); | |
40eff45b RS |
5180 | |
5181 | memset(&rqst, 0, sizeof(struct smb_rqst)); | |
5182 | rqst.rq_iov = iov; | |
5183 | rqst.rq_nvec = 2; | |
5184 | ||
5185 | rc = cifs_send_recv(xid, tcon->ses, &rqst, &resp_buf_type, flags, | |
ced93679 | 5186 | &rsp_iov); |
da502f7d | 5187 | cifs_small_buf_release(req); |
f7ba7fe6 | 5188 | if (rc) { |
f96637be | 5189 | cifs_dbg(FYI, "Send error in smb2_lockv = %d\n", rc); |
f7ba7fe6 | 5190 | cifs_stats_fail_inc(tcon, SMB2_LOCK_HE); |
eccb4422 SF |
5191 | trace_smb3_lock_err(xid, persist_fid, tcon->tid, |
5192 | tcon->ses->Suid, rc); | |
f7ba7fe6 PS |
5193 | } |
5194 | ||
5195 | return rc; | |
5196 | } | |
5197 | ||
5198 | int | |
5199 | SMB2_lock(const unsigned int xid, struct cifs_tcon *tcon, | |
5200 | const __u64 persist_fid, const __u64 volatile_fid, const __u32 pid, | |
5201 | const __u64 length, const __u64 offset, const __u32 lock_flags, | |
5202 | const bool wait) | |
5203 | { | |
5204 | struct smb2_lock_element lock; | |
5205 | ||
5206 | lock.Offset = cpu_to_le64(offset); | |
5207 | lock.Length = cpu_to_le64(length); | |
5208 | lock.Flags = cpu_to_le32(lock_flags); | |
5209 | if (!wait && lock_flags != SMB2_LOCKFLAG_UNLOCK) | |
5210 | lock.Flags |= cpu_to_le32(SMB2_LOCKFLAG_FAIL_IMMEDIATELY); | |
5211 | ||
5212 | return smb2_lockv(xid, tcon, persist_fid, volatile_fid, pid, 1, &lock); | |
5213 | } | |
0822f514 PS |
5214 | |
5215 | int | |
5216 | SMB2_lease_break(const unsigned int xid, struct cifs_tcon *tcon, | |
5217 | __u8 *lease_key, const __le32 lease_state) | |
5218 | { | |
40eff45b | 5219 | struct smb_rqst rqst; |
0822f514 PS |
5220 | int rc; |
5221 | struct smb2_lease_ack *req = NULL; | |
8eb7998e | 5222 | struct cifs_ses *ses = tcon->ses; |
7fb8986e | 5223 | int flags = CIFS_OBREAK_OP; |
8eb7998e RS |
5224 | unsigned int total_len; |
5225 | struct kvec iov[1]; | |
5226 | struct kvec rsp_iov; | |
5227 | int resp_buf_type; | |
179e44d4 SF |
5228 | __u64 *please_key_high; |
5229 | __u64 *please_key_low; | |
0822f514 | 5230 | |
f96637be | 5231 | cifs_dbg(FYI, "SMB2_lease_break\n"); |
8eb7998e RS |
5232 | rc = smb2_plain_req_init(SMB2_OPLOCK_BREAK, tcon, (void **) &req, |
5233 | &total_len); | |
0822f514 PS |
5234 | if (rc) |
5235 | return rc; | |
5236 | ||
5a77e75f | 5237 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
5238 | flags |= CIFS_TRANSFORM_REQ; |
5239 | ||
8eb7998e | 5240 | req->sync_hdr.CreditRequest = cpu_to_le16(1); |
0822f514 | 5241 | req->StructureSize = cpu_to_le16(36); |
8eb7998e | 5242 | total_len += 12; |
0822f514 PS |
5243 | |
5244 | memcpy(req->LeaseKey, lease_key, 16); | |
5245 | req->LeaseState = lease_state; | |
5246 | ||
392e1c5d | 5247 | flags |= CIFS_NO_RSP_BUF; |
8eb7998e RS |
5248 | |
5249 | iov[0].iov_base = (char *)req; | |
5250 | iov[0].iov_len = total_len; | |
5251 | ||
40eff45b RS |
5252 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
5253 | rqst.rq_iov = iov; | |
5254 | rqst.rq_nvec = 1; | |
5255 | ||
5256 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buf_type, flags, &rsp_iov); | |
da502f7d | 5257 | cifs_small_buf_release(req); |
0822f514 | 5258 | |
d339adc1 AA |
5259 | please_key_low = (__u64 *)lease_key; |
5260 | please_key_high = (__u64 *)(lease_key+8); | |
0822f514 PS |
5261 | if (rc) { |
5262 | cifs_stats_fail_inc(tcon, SMB2_OPLOCK_BREAK_HE); | |
179e44d4 SF |
5263 | trace_smb3_lease_err(le32_to_cpu(lease_state), tcon->tid, |
5264 | ses->Suid, *please_key_low, *please_key_high, rc); | |
f96637be | 5265 | cifs_dbg(FYI, "Send error in Lease Break = %d\n", rc); |
179e44d4 SF |
5266 | } else |
5267 | trace_smb3_lease_done(le32_to_cpu(lease_state), tcon->tid, | |
5268 | ses->Suid, *please_key_low, *please_key_high); | |
0822f514 PS |
5269 | |
5270 | return rc; | |
5271 | } |