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" |
ec2e4523 PS |
53 | |
54 | /* | |
55 | * The following table defines the expected "StructureSize" of SMB2 requests | |
56 | * in order by SMB2 command. This is similar to "wct" in SMB/CIFS requests. | |
57 | * | |
58 | * Note that commands are defined in smb2pdu.h in le16 but the array below is | |
59 | * indexed by command in host byte order. | |
60 | */ | |
61 | static const int smb2_req_struct_sizes[NUMBER_OF_SMB2_COMMANDS] = { | |
62 | /* SMB2_NEGOTIATE */ 36, | |
63 | /* SMB2_SESSION_SETUP */ 25, | |
64 | /* SMB2_LOGOFF */ 4, | |
65 | /* SMB2_TREE_CONNECT */ 9, | |
66 | /* SMB2_TREE_DISCONNECT */ 4, | |
67 | /* SMB2_CREATE */ 57, | |
68 | /* SMB2_CLOSE */ 24, | |
69 | /* SMB2_FLUSH */ 24, | |
70 | /* SMB2_READ */ 49, | |
71 | /* SMB2_WRITE */ 49, | |
72 | /* SMB2_LOCK */ 48, | |
73 | /* SMB2_IOCTL */ 57, | |
74 | /* SMB2_CANCEL */ 4, | |
75 | /* SMB2_ECHO */ 4, | |
76 | /* SMB2_QUERY_DIRECTORY */ 33, | |
77 | /* SMB2_CHANGE_NOTIFY */ 32, | |
78 | /* SMB2_QUERY_INFO */ 41, | |
79 | /* SMB2_SET_INFO */ 33, | |
80 | /* SMB2_OPLOCK_BREAK */ 24 /* BB this is 36 for LEASE_BREAK variant */ | |
81 | }; | |
82 | ||
730928c8 | 83 | int smb3_encryption_required(const struct cifs_tcon *tcon) |
7fb8986e | 84 | { |
ae6f8dd4 PS |
85 | if (!tcon) |
86 | return 0; | |
7fb8986e PS |
87 | if ((tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) || |
88 | (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA)) | |
89 | return 1; | |
ae6f8dd4 PS |
90 | if (tcon->seal && |
91 | (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION)) | |
92 | return 1; | |
7fb8986e PS |
93 | return 0; |
94 | } | |
ec2e4523 PS |
95 | |
96 | static void | |
cb200bd6 | 97 | smb2_hdr_assemble(struct smb2_sync_hdr *shdr, __le16 smb2_cmd, |
ec2e4523 PS |
98 | const struct cifs_tcon *tcon) |
99 | { | |
31473fc4 PS |
100 | shdr->ProtocolId = SMB2_PROTO_NUMBER; |
101 | shdr->StructureSize = cpu_to_le16(64); | |
102 | shdr->Command = smb2_cmd; | |
7d414f39 RL |
103 | if (tcon && tcon->ses && tcon->ses->server) { |
104 | struct TCP_Server_Info *server = tcon->ses->server; | |
105 | ||
106 | spin_lock(&server->req_lock); | |
107 | /* Request up to 2 credits but don't go over the limit. */ | |
141891f4 | 108 | if (server->credits >= server->max_credits) |
31473fc4 | 109 | shdr->CreditRequest = cpu_to_le16(0); |
7d414f39 | 110 | else |
31473fc4 | 111 | shdr->CreditRequest = cpu_to_le16( |
141891f4 | 112 | min_t(int, server->max_credits - |
7d414f39 RL |
113 | server->credits, 2)); |
114 | spin_unlock(&server->req_lock); | |
115 | } else { | |
31473fc4 | 116 | shdr->CreditRequest = cpu_to_le16(2); |
7d414f39 | 117 | } |
31473fc4 | 118 | shdr->ProcessId = cpu_to_le32((__u16)current->tgid); |
ec2e4523 PS |
119 | |
120 | if (!tcon) | |
121 | goto out; | |
122 | ||
2b80d049 SF |
123 | /* GLOBAL_CAP_LARGE_MTU will only be set if dialect > SMB2.02 */ |
124 | /* See sections 2.2.4 and 3.2.4.1.5 of MS-SMB2 */ | |
1dc92c45 | 125 | if ((tcon->ses) && (tcon->ses->server) && |
84ceeb96 | 126 | (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) |
31473fc4 | 127 | shdr->CreditCharge = cpu_to_le16(1); |
2b80d049 SF |
128 | /* else CreditCharge MBZ */ |
129 | ||
31473fc4 | 130 | shdr->TreeId = tcon->tid; |
ec2e4523 PS |
131 | /* Uid is not converted */ |
132 | if (tcon->ses) | |
31473fc4 | 133 | shdr->SessionId = tcon->ses->Suid; |
f87ab88b SF |
134 | |
135 | /* | |
136 | * If we would set SMB2_FLAGS_DFS_OPERATIONS on open we also would have | |
137 | * to pass the path on the Open SMB prefixed by \\server\share. | |
138 | * Not sure when we would need to do the augmented path (if ever) and | |
139 | * setting this flag breaks the SMB2 open operation since it is | |
140 | * illegal to send an empty path name (without \\server\share prefix) | |
141 | * when the DFS flag is set in the SMB open header. We could | |
142 | * consider setting the flag on all operations other than open | |
143 | * but it is safer to net set it for now. | |
144 | */ | |
145 | /* if (tcon->share_flags & SHI1005_FLAGS_DFS) | |
31473fc4 | 146 | shdr->Flags |= SMB2_FLAGS_DFS_OPERATIONS; */ |
f87ab88b | 147 | |
7fb8986e | 148 | if (tcon->ses && tcon->ses->server && tcon->ses->server->sign && |
5a77e75f | 149 | !smb3_encryption_required(tcon)) |
31473fc4 | 150 | shdr->Flags |= SMB2_FLAGS_SIGNED; |
ec2e4523 | 151 | out: |
ec2e4523 PS |
152 | return; |
153 | } | |
154 | ||
155 | static int | |
156 | smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon) | |
157 | { | |
7ffbe655 | 158 | int rc; |
aa24d1e9 PS |
159 | struct nls_table *nls_codepage; |
160 | struct cifs_ses *ses; | |
161 | struct TCP_Server_Info *server; | |
162 | ||
163 | /* | |
164 | * SMB2s NegProt, SessSetup, Logoff do not have tcon yet so | |
165 | * check for tcp and smb session status done differently | |
166 | * for those three - in the calling routine. | |
167 | */ | |
168 | if (tcon == NULL) | |
7ffbe655 | 169 | return 0; |
aa24d1e9 PS |
170 | |
171 | if (smb2_command == SMB2_TREE_CONNECT) | |
7ffbe655 | 172 | return 0; |
aa24d1e9 PS |
173 | |
174 | if (tcon->tidStatus == CifsExiting) { | |
175 | /* | |
176 | * only tree disconnect, open, and write, | |
177 | * (and ulogoff which does not have tcon) | |
178 | * are allowed as we start force umount. | |
179 | */ | |
180 | if ((smb2_command != SMB2_WRITE) && | |
181 | (smb2_command != SMB2_CREATE) && | |
182 | (smb2_command != SMB2_TREE_DISCONNECT)) { | |
f96637be JP |
183 | cifs_dbg(FYI, "can not send cmd %d while umounting\n", |
184 | smb2_command); | |
aa24d1e9 PS |
185 | return -ENODEV; |
186 | } | |
187 | } | |
188 | if ((!tcon->ses) || (tcon->ses->status == CifsExiting) || | |
189 | (!tcon->ses->server)) | |
190 | return -EIO; | |
191 | ||
192 | ses = tcon->ses; | |
193 | server = ses->server; | |
194 | ||
195 | /* | |
196 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
197 | * greater than cifs socket timeout which is 7 seconds | |
198 | */ | |
199 | while (server->tcpStatus == CifsNeedReconnect) { | |
200 | /* | |
201 | * Return to caller for TREE_DISCONNECT and LOGOFF and CLOSE | |
202 | * here since they are implicitly done when session drops. | |
203 | */ | |
204 | switch (smb2_command) { | |
205 | /* | |
206 | * BB Should we keep oplock break and add flush to exceptions? | |
207 | */ | |
208 | case SMB2_TREE_DISCONNECT: | |
209 | case SMB2_CANCEL: | |
210 | case SMB2_CLOSE: | |
211 | case SMB2_OPLOCK_BREAK: | |
212 | return -EAGAIN; | |
213 | } | |
214 | ||
7ffbe655 PA |
215 | rc = wait_event_interruptible_timeout(server->response_q, |
216 | (server->tcpStatus != CifsNeedReconnect), | |
217 | 10 * HZ); | |
218 | if (rc < 0) { | |
219 | cifs_dbg(FYI, "%s: aborting reconnect due to a received" | |
220 | " signal by the process\n", __func__); | |
221 | return -ERESTARTSYS; | |
222 | } | |
aa24d1e9 PS |
223 | |
224 | /* are we still trying to reconnect? */ | |
225 | if (server->tcpStatus != CifsNeedReconnect) | |
226 | break; | |
227 | ||
228 | /* | |
229 | * on "soft" mounts we wait once. Hard mounts keep | |
230 | * retrying until process is killed or server comes | |
231 | * back on-line | |
232 | */ | |
233 | if (!tcon->retry) { | |
f96637be | 234 | cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n"); |
aa24d1e9 PS |
235 | return -EHOSTDOWN; |
236 | } | |
237 | } | |
238 | ||
239 | if (!tcon->ses->need_reconnect && !tcon->need_reconnect) | |
7ffbe655 | 240 | return 0; |
aa24d1e9 PS |
241 | |
242 | nls_codepage = load_nls_default(); | |
243 | ||
244 | /* | |
245 | * need to prevent multiple threads trying to simultaneously reconnect | |
246 | * the same SMB session | |
247 | */ | |
248 | mutex_lock(&tcon->ses->session_mutex); | |
76e75270 SC |
249 | |
250 | /* | |
251 | * Recheck after acquire mutex. If another thread is negotiating | |
252 | * and the server never sends an answer the socket will be closed | |
253 | * and tcpStatus set to reconnect. | |
254 | */ | |
255 | if (server->tcpStatus == CifsNeedReconnect) { | |
256 | rc = -EHOSTDOWN; | |
257 | mutex_unlock(&tcon->ses->session_mutex); | |
258 | goto out; | |
259 | } | |
260 | ||
aa24d1e9 PS |
261 | rc = cifs_negotiate_protocol(0, tcon->ses); |
262 | if (!rc && tcon->ses->need_reconnect) | |
263 | rc = cifs_setup_session(0, tcon->ses, nls_codepage); | |
264 | ||
265 | if (rc || !tcon->need_reconnect) { | |
266 | mutex_unlock(&tcon->ses->session_mutex); | |
267 | goto out; | |
268 | } | |
269 | ||
270 | cifs_mark_open_files_invalid(tcon); | |
96a988ff PS |
271 | if (tcon->use_persistent) |
272 | tcon->need_reopen_files = true; | |
52ace1ef | 273 | |
aa24d1e9 PS |
274 | rc = SMB2_tcon(0, tcon->ses, tcon->treeName, tcon, nls_codepage); |
275 | mutex_unlock(&tcon->ses->session_mutex); | |
52ace1ef | 276 | |
f96637be | 277 | cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
c318e6c2 SF |
278 | if (rc) { |
279 | /* If sess reconnected but tcon didn't, something strange ... */ | |
280 | printk_once(KERN_WARNING "reconnect tcon failed rc = %d\n", rc); | |
aa24d1e9 | 281 | goto out; |
c318e6c2 | 282 | } |
96a988ff PS |
283 | |
284 | if (smb2_command != SMB2_INTERNAL_CMD) | |
285 | queue_delayed_work(cifsiod_wq, &server->reconnect, 0); | |
286 | ||
aa24d1e9 | 287 | atomic_inc(&tconInfoReconnectCount); |
aa24d1e9 PS |
288 | out: |
289 | /* | |
290 | * Check if handle based operation so we know whether we can continue | |
291 | * or not without returning to caller to reset file handle. | |
292 | */ | |
293 | /* | |
294 | * BB Is flush done by server on drop of tcp session? Should we special | |
295 | * case it and skip above? | |
296 | */ | |
297 | switch (smb2_command) { | |
298 | case SMB2_FLUSH: | |
299 | case SMB2_READ: | |
300 | case SMB2_WRITE: | |
301 | case SMB2_LOCK: | |
302 | case SMB2_IOCTL: | |
303 | case SMB2_QUERY_DIRECTORY: | |
304 | case SMB2_CHANGE_NOTIFY: | |
305 | case SMB2_QUERY_INFO: | |
306 | case SMB2_SET_INFO: | |
4772c795 | 307 | rc = -EAGAIN; |
aa24d1e9 PS |
308 | } |
309 | unload_nls(nls_codepage); | |
ec2e4523 PS |
310 | return rc; |
311 | } | |
312 | ||
cb200bd6 PS |
313 | static void |
314 | fill_small_buf(__le16 smb2_command, struct cifs_tcon *tcon, void *buf, | |
315 | unsigned int *total_len) | |
316 | { | |
317 | struct smb2_sync_pdu *spdu = (struct smb2_sync_pdu *)buf; | |
318 | /* lookup word count ie StructureSize from table */ | |
319 | __u16 parmsize = smb2_req_struct_sizes[le16_to_cpu(smb2_command)]; | |
320 | ||
321 | /* | |
322 | * smaller than SMALL_BUFFER_SIZE but bigger than fixed area of | |
323 | * largest operations (Create) | |
324 | */ | |
325 | memset(buf, 0, 256); | |
326 | ||
327 | smb2_hdr_assemble(&spdu->sync_hdr, smb2_command, tcon); | |
328 | spdu->StructureSize2 = cpu_to_le16(parmsize); | |
329 | ||
330 | *total_len = parmsize + sizeof(struct smb2_sync_hdr); | |
331 | } | |
332 | ||
ec2e4523 PS |
333 | /* |
334 | * Allocate and return pointer to an SMB request hdr, and set basic | |
335 | * SMB information in the SMB header. If the return code is zero, this | |
305428ac | 336 | * function must have filled in request_buf pointer. |
ec2e4523 PS |
337 | */ |
338 | static int | |
305428ac RS |
339 | smb2_plain_req_init(__le16 smb2_command, struct cifs_tcon *tcon, |
340 | void **request_buf, unsigned int *total_len) | |
ec2e4523 | 341 | { |
cb200bd6 | 342 | int rc; |
ec2e4523 PS |
343 | |
344 | rc = smb2_reconnect(smb2_command, tcon); | |
345 | if (rc) | |
346 | return rc; | |
347 | ||
348 | /* BB eventually switch this to SMB2 specific small buf size */ | |
f46ecbd9 SB |
349 | if (smb2_command == SMB2_SET_INFO) |
350 | *request_buf = cifs_buf_get(); | |
351 | else | |
352 | *request_buf = cifs_small_buf_get(); | |
ec2e4523 PS |
353 | if (*request_buf == NULL) { |
354 | /* BB should we add a retry in here if not a writepage? */ | |
355 | return -ENOMEM; | |
356 | } | |
357 | ||
305428ac RS |
358 | fill_small_buf(smb2_command, tcon, |
359 | (struct smb2_sync_hdr *)(*request_buf), | |
360 | total_len); | |
ec2e4523 PS |
361 | |
362 | if (tcon != NULL) { | |
ec2e4523 PS |
363 | uint16_t com_code = le16_to_cpu(smb2_command); |
364 | cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_sent[com_code]); | |
ec2e4523 PS |
365 | cifs_stats_inc(&tcon->num_smbs_sent); |
366 | } | |
367 | ||
368 | return rc; | |
369 | } | |
370 | ||
0fdfef9a | 371 | |
13cacea7 RS |
372 | /* offset is sizeof smb2_negotiate_req but rounded up to 8 bytes */ |
373 | #define OFFSET_OF_NEG_CONTEXT 0x68 /* sizeof(struct smb2_negotiate_req) */ | |
ebb3a9d4 SF |
374 | |
375 | ||
376 | #define SMB2_PREAUTH_INTEGRITY_CAPABILITIES cpu_to_le16(1) | |
377 | #define SMB2_ENCRYPTION_CAPABILITIES cpu_to_le16(2) | |
fcef0db6 | 378 | #define SMB2_POSIX_EXTENSIONS_AVAILABLE cpu_to_le16(0x100) |
ebb3a9d4 SF |
379 | |
380 | static void | |
381 | build_preauth_ctxt(struct smb2_preauth_neg_context *pneg_ctxt) | |
382 | { | |
383 | pneg_ctxt->ContextType = SMB2_PREAUTH_INTEGRITY_CAPABILITIES; | |
384 | pneg_ctxt->DataLength = cpu_to_le16(38); | |
385 | pneg_ctxt->HashAlgorithmCount = cpu_to_le16(1); | |
386 | pneg_ctxt->SaltLength = cpu_to_le16(SMB311_SALT_SIZE); | |
387 | get_random_bytes(pneg_ctxt->Salt, SMB311_SALT_SIZE); | |
388 | pneg_ctxt->HashAlgorithms = SMB2_PREAUTH_INTEGRITY_SHA512; | |
389 | } | |
390 | ||
391 | static void | |
392 | build_encrypt_ctxt(struct smb2_encryption_neg_context *pneg_ctxt) | |
393 | { | |
394 | pneg_ctxt->ContextType = SMB2_ENCRYPTION_CAPABILITIES; | |
23657ad7 SF |
395 | pneg_ctxt->DataLength = cpu_to_le16(4); /* Cipher Count + le16 cipher */ |
396 | pneg_ctxt->CipherCount = cpu_to_le16(1); | |
397 | /* pneg_ctxt->Ciphers[0] = SMB2_ENCRYPTION_AES128_GCM;*/ /* not supported yet */ | |
398 | pneg_ctxt->Ciphers[0] = SMB2_ENCRYPTION_AES128_CCM; | |
ebb3a9d4 SF |
399 | } |
400 | ||
fcef0db6 SF |
401 | static void |
402 | build_posix_ctxt(struct smb2_posix_neg_context *pneg_ctxt) | |
403 | { | |
404 | pneg_ctxt->ContextType = SMB2_POSIX_EXTENSIONS_AVAILABLE; | |
405 | pneg_ctxt->DataLength = cpu_to_le16(POSIX_CTXT_DATA_LEN); | |
406 | } | |
407 | ||
ebb3a9d4 | 408 | static void |
13cacea7 RS |
409 | assemble_neg_contexts(struct smb2_negotiate_req *req, |
410 | unsigned int *total_len) | |
ebb3a9d4 | 411 | { |
13cacea7 | 412 | char *pneg_ctxt = (char *)req + OFFSET_OF_NEG_CONTEXT; |
fcef0db6 | 413 | unsigned int ctxt_len; |
ebb3a9d4 | 414 | |
fcef0db6 | 415 | *total_len += 2; /* Add 2 due to round to 8 byte boundary for 1st ctxt */ |
ebb3a9d4 | 416 | build_preauth_ctxt((struct smb2_preauth_neg_context *)pneg_ctxt); |
fcef0db6 SF |
417 | ctxt_len = DIV_ROUND_UP(sizeof(struct smb2_preauth_neg_context), 8) * 8; |
418 | *total_len += ctxt_len; | |
419 | pneg_ctxt += ctxt_len; | |
13cacea7 | 420 | |
ebb3a9d4 | 421 | build_encrypt_ctxt((struct smb2_encryption_neg_context *)pneg_ctxt); |
fcef0db6 SF |
422 | ctxt_len = DIV_ROUND_UP(sizeof(struct smb2_encryption_neg_context), 8) * 8; |
423 | *total_len += ctxt_len; | |
424 | pneg_ctxt += ctxt_len; | |
425 | ||
426 | build_posix_ctxt((struct smb2_posix_neg_context *)pneg_ctxt); | |
427 | *total_len += sizeof(struct smb2_posix_neg_context); | |
13cacea7 | 428 | |
fcef0db6 SF |
429 | req->NegotiateContextOffset = cpu_to_le32(OFFSET_OF_NEG_CONTEXT); |
430 | req->NegotiateContextCount = cpu_to_le16(3); | |
ebb3a9d4 | 431 | } |
5100d8a3 SF |
432 | |
433 | static void decode_preauth_context(struct smb2_preauth_neg_context *ctxt) | |
434 | { | |
435 | unsigned int len = le16_to_cpu(ctxt->DataLength); | |
436 | ||
437 | /* If invalid preauth context warn but use what we requested, SHA-512 */ | |
438 | if (len < MIN_PREAUTH_CTXT_DATA_LEN) { | |
439 | printk_once(KERN_WARNING "server sent bad preauth context\n"); | |
440 | return; | |
441 | } | |
442 | if (le16_to_cpu(ctxt->HashAlgorithmCount) != 1) | |
443 | printk_once(KERN_WARNING "illegal SMB3 hash algorithm count\n"); | |
444 | if (ctxt->HashAlgorithms != SMB2_PREAUTH_INTEGRITY_SHA512) | |
445 | printk_once(KERN_WARNING "unknown SMB3 hash algorithm\n"); | |
446 | } | |
447 | ||
448 | static int decode_encrypt_ctx(struct TCP_Server_Info *server, | |
449 | struct smb2_encryption_neg_context *ctxt) | |
450 | { | |
451 | unsigned int len = le16_to_cpu(ctxt->DataLength); | |
452 | ||
453 | cifs_dbg(FYI, "decode SMB3.11 encryption neg context of len %d\n", len); | |
454 | if (len < MIN_ENCRYPT_CTXT_DATA_LEN) { | |
455 | printk_once(KERN_WARNING "server sent bad crypto ctxt len\n"); | |
456 | return -EINVAL; | |
457 | } | |
458 | ||
459 | if (le16_to_cpu(ctxt->CipherCount) != 1) { | |
460 | printk_once(KERN_WARNING "illegal SMB3.11 cipher count\n"); | |
461 | return -EINVAL; | |
462 | } | |
463 | cifs_dbg(FYI, "SMB311 cipher type:%d\n", le16_to_cpu(ctxt->Ciphers[0])); | |
464 | if ((ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES128_CCM) && | |
465 | (ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES128_GCM)) { | |
466 | printk_once(KERN_WARNING "invalid SMB3.11 cipher returned\n"); | |
467 | return -EINVAL; | |
468 | } | |
469 | server->cipher_type = ctxt->Ciphers[0]; | |
23657ad7 | 470 | server->capabilities |= SMB2_GLOBAL_CAP_ENCRYPTION; |
5100d8a3 SF |
471 | return 0; |
472 | } | |
473 | ||
474 | static int smb311_decode_neg_context(struct smb2_negotiate_rsp *rsp, | |
977b6170 RS |
475 | struct TCP_Server_Info *server, |
476 | unsigned int len_of_smb) | |
5100d8a3 SF |
477 | { |
478 | struct smb2_neg_context *pctx; | |
479 | unsigned int offset = le32_to_cpu(rsp->NegotiateContextOffset); | |
480 | unsigned int ctxt_cnt = le16_to_cpu(rsp->NegotiateContextCount); | |
5100d8a3 SF |
481 | unsigned int len_of_ctxts, i; |
482 | int rc = 0; | |
483 | ||
484 | cifs_dbg(FYI, "decoding %d negotiate contexts\n", ctxt_cnt); | |
485 | if (len_of_smb <= offset) { | |
486 | cifs_dbg(VFS, "Invalid response: negotiate context offset\n"); | |
487 | return -EINVAL; | |
488 | } | |
489 | ||
490 | len_of_ctxts = len_of_smb - offset; | |
491 | ||
492 | for (i = 0; i < ctxt_cnt; i++) { | |
493 | int clen; | |
494 | /* check that offset is not beyond end of SMB */ | |
495 | if (len_of_ctxts == 0) | |
496 | break; | |
497 | ||
498 | if (len_of_ctxts < sizeof(struct smb2_neg_context)) | |
499 | break; | |
500 | ||
1fc6ad2f | 501 | pctx = (struct smb2_neg_context *)(offset + (char *)rsp); |
5100d8a3 SF |
502 | clen = le16_to_cpu(pctx->DataLength); |
503 | if (clen > len_of_ctxts) | |
504 | break; | |
505 | ||
506 | if (pctx->ContextType == SMB2_PREAUTH_INTEGRITY_CAPABILITIES) | |
507 | decode_preauth_context( | |
508 | (struct smb2_preauth_neg_context *)pctx); | |
509 | else if (pctx->ContextType == SMB2_ENCRYPTION_CAPABILITIES) | |
510 | rc = decode_encrypt_ctx(server, | |
511 | (struct smb2_encryption_neg_context *)pctx); | |
fcef0db6 SF |
512 | else if (pctx->ContextType == SMB2_POSIX_EXTENSIONS_AVAILABLE) |
513 | server->posix_ext_supported = true; | |
5100d8a3 SF |
514 | else |
515 | cifs_dbg(VFS, "unknown negcontext of type %d ignored\n", | |
516 | le16_to_cpu(pctx->ContextType)); | |
517 | ||
518 | if (rc) | |
519 | break; | |
520 | /* offsets must be 8 byte aligned */ | |
521 | clen = (clen + 7) & ~0x7; | |
522 | offset += clen + sizeof(struct smb2_neg_context); | |
523 | len_of_ctxts -= clen; | |
524 | } | |
525 | return rc; | |
526 | } | |
527 | ||
ce558b0e SF |
528 | static struct create_posix * |
529 | create_posix_buf(umode_t mode) | |
530 | { | |
531 | struct create_posix *buf; | |
532 | ||
533 | buf = kzalloc(sizeof(struct create_posix), | |
534 | GFP_KERNEL); | |
535 | if (!buf) | |
536 | return NULL; | |
537 | ||
538 | buf->ccontext.DataOffset = | |
539 | cpu_to_le16(offsetof(struct create_posix, Mode)); | |
540 | buf->ccontext.DataLength = cpu_to_le32(4); | |
541 | buf->ccontext.NameOffset = | |
542 | cpu_to_le16(offsetof(struct create_posix, Name)); | |
543 | buf->ccontext.NameLength = cpu_to_le16(16); | |
544 | ||
545 | /* SMB2_CREATE_TAG_POSIX is "0x93AD25509CB411E7B42383DE968BCD7C" */ | |
546 | buf->Name[0] = 0x93; | |
547 | buf->Name[1] = 0xAD; | |
548 | buf->Name[2] = 0x25; | |
549 | buf->Name[3] = 0x50; | |
550 | buf->Name[4] = 0x9C; | |
551 | buf->Name[5] = 0xB4; | |
552 | buf->Name[6] = 0x11; | |
553 | buf->Name[7] = 0xE7; | |
554 | buf->Name[8] = 0xB4; | |
555 | buf->Name[9] = 0x23; | |
556 | buf->Name[10] = 0x83; | |
557 | buf->Name[11] = 0xDE; | |
558 | buf->Name[12] = 0x96; | |
559 | buf->Name[13] = 0x8B; | |
560 | buf->Name[14] = 0xCD; | |
561 | buf->Name[15] = 0x7C; | |
562 | buf->Mode = cpu_to_le32(mode); | |
563 | cifs_dbg(FYI, "mode on posix create 0%o", mode); | |
564 | return buf; | |
565 | } | |
566 | ||
567 | static int | |
568 | add_posix_context(struct kvec *iov, unsigned int *num_iovec, umode_t mode) | |
569 | { | |
570 | struct smb2_create_req *req = iov[0].iov_base; | |
571 | unsigned int num = *num_iovec; | |
572 | ||
573 | iov[num].iov_base = create_posix_buf(mode); | |
574 | if (iov[num].iov_base == NULL) | |
575 | return -ENOMEM; | |
576 | iov[num].iov_len = sizeof(struct create_posix); | |
577 | if (!req->CreateContextsOffset) | |
578 | req->CreateContextsOffset = cpu_to_le32( | |
579 | sizeof(struct smb2_create_req) + | |
580 | iov[num - 1].iov_len); | |
581 | le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_posix)); | |
582 | *num_iovec = num + 1; | |
583 | return 0; | |
584 | } | |
585 | ||
ebb3a9d4 | 586 | |
ec2e4523 PS |
587 | /* |
588 | * | |
589 | * SMB2 Worker functions follow: | |
590 | * | |
591 | * The general structure of the worker functions is: | |
592 | * 1) Call smb2_init (assembles SMB2 header) | |
593 | * 2) Initialize SMB2 command specific fields in fixed length area of SMB | |
594 | * 3) Call smb_sendrcv2 (sends request on socket and waits for response) | |
595 | * 4) Decode SMB2 command specific fields in the fixed length area | |
596 | * 5) Decode variable length data area (if any for this SMB2 command type) | |
597 | * 6) Call free smb buffer | |
598 | * 7) return | |
599 | * | |
600 | */ | |
601 | ||
602 | int | |
603 | SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses) | |
604 | { | |
40eff45b | 605 | struct smb_rqst rqst; |
ec2e4523 PS |
606 | struct smb2_negotiate_req *req; |
607 | struct smb2_negotiate_rsp *rsp; | |
608 | struct kvec iov[1]; | |
da502f7d | 609 | struct kvec rsp_iov; |
ec2e4523 PS |
610 | int rc = 0; |
611 | int resp_buftype; | |
3534b850 | 612 | struct TCP_Server_Info *server = ses->server; |
ec2e4523 PS |
613 | int blob_offset, blob_length; |
614 | char *security_blob; | |
615 | int flags = CIFS_NEG_OP; | |
13cacea7 | 616 | unsigned int total_len; |
ec2e4523 | 617 | |
f96637be | 618 | cifs_dbg(FYI, "Negotiate protocol\n"); |
ec2e4523 | 619 | |
3534b850 JL |
620 | if (!server) { |
621 | WARN(1, "%s: server is NULL!\n", __func__); | |
622 | return -EIO; | |
ec2e4523 PS |
623 | } |
624 | ||
13cacea7 | 625 | rc = smb2_plain_req_init(SMB2_NEGOTIATE, NULL, (void **) &req, &total_len); |
ec2e4523 PS |
626 | if (rc) |
627 | return rc; | |
628 | ||
13cacea7 | 629 | req->sync_hdr.SessionId = 0; |
0fdfef9a | 630 | |
8bd68c6e AA |
631 | memset(server->preauth_sha_hash, 0, SMB2_PREAUTH_HASH_SIZE); |
632 | memset(ses->preauth_sha_hash, 0, SMB2_PREAUTH_HASH_SIZE); | |
ec2e4523 | 633 | |
9764c02f SF |
634 | if (strcmp(ses->server->vals->version_string, |
635 | SMB3ANY_VERSION_STRING) == 0) { | |
636 | req->Dialects[0] = cpu_to_le16(SMB30_PROT_ID); | |
637 | req->Dialects[1] = cpu_to_le16(SMB302_PROT_ID); | |
638 | req->DialectCount = cpu_to_le16(2); | |
13cacea7 | 639 | total_len += 4; |
9764c02f SF |
640 | } else if (strcmp(ses->server->vals->version_string, |
641 | SMBDEFAULT_VERSION_STRING) == 0) { | |
642 | req->Dialects[0] = cpu_to_le16(SMB21_PROT_ID); | |
643 | req->Dialects[1] = cpu_to_le16(SMB30_PROT_ID); | |
644 | req->Dialects[2] = cpu_to_le16(SMB302_PROT_ID); | |
645 | req->DialectCount = cpu_to_le16(3); | |
13cacea7 | 646 | total_len += 6; |
9764c02f SF |
647 | } else { |
648 | /* otherwise send specific dialect */ | |
649 | req->Dialects[0] = cpu_to_le16(ses->server->vals->protocol_id); | |
650 | req->DialectCount = cpu_to_le16(1); | |
13cacea7 | 651 | total_len += 2; |
9764c02f | 652 | } |
ec2e4523 PS |
653 | |
654 | /* only one of SMB2 signing flags may be set in SMB2 request */ | |
38d77c50 | 655 | if (ses->sign) |
9cd2e62c | 656 | req->SecurityMode = cpu_to_le16(SMB2_NEGOTIATE_SIGNING_REQUIRED); |
38d77c50 | 657 | else if (global_secflags & CIFSSEC_MAY_SIGN) |
9cd2e62c | 658 | req->SecurityMode = cpu_to_le16(SMB2_NEGOTIATE_SIGNING_ENABLED); |
38d77c50 JL |
659 | else |
660 | req->SecurityMode = 0; | |
ec2e4523 | 661 | |
e4aa25e7 | 662 | req->Capabilities = cpu_to_le32(ses->server->vals->req_capabilities); |
ec2e4523 | 663 | |
3c5f9be1 SF |
664 | /* ClientGUID must be zero for SMB2.02 dialect */ |
665 | if (ses->server->vals->protocol_id == SMB20_PROT_ID) | |
666 | memset(req->ClientGUID, 0, SMB2_CLIENT_GUID_SIZE); | |
ebb3a9d4 | 667 | else { |
3c5f9be1 SF |
668 | memcpy(req->ClientGUID, server->client_guid, |
669 | SMB2_CLIENT_GUID_SIZE); | |
ebb3a9d4 | 670 | if (ses->server->vals->protocol_id == SMB311_PROT_ID) |
13cacea7 | 671 | assemble_neg_contexts(req, &total_len); |
ebb3a9d4 | 672 | } |
ec2e4523 | 673 | iov[0].iov_base = (char *)req; |
13cacea7 | 674 | iov[0].iov_len = total_len; |
ec2e4523 | 675 | |
40eff45b RS |
676 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
677 | rqst.rq_iov = iov; | |
678 | rqst.rq_nvec = 1; | |
679 | ||
680 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d PS |
681 | cifs_small_buf_release(req); |
682 | rsp = (struct smb2_negotiate_rsp *)rsp_iov.iov_base; | |
ec2e4523 PS |
683 | /* |
684 | * No tcon so can't do | |
685 | * cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_fail[SMB2...]); | |
686 | */ | |
7e682f76 SF |
687 | if (rc == -EOPNOTSUPP) { |
688 | cifs_dbg(VFS, "Dialect not supported by server. Consider " | |
9764c02f | 689 | "specifying vers=1.0 or vers=2.0 on mount for accessing" |
7e682f76 SF |
690 | " older servers\n"); |
691 | goto neg_exit; | |
692 | } else if (rc != 0) | |
ec2e4523 PS |
693 | goto neg_exit; |
694 | ||
9764c02f SF |
695 | if (strcmp(ses->server->vals->version_string, |
696 | SMB3ANY_VERSION_STRING) == 0) { | |
697 | if (rsp->DialectRevision == cpu_to_le16(SMB20_PROT_ID)) { | |
698 | cifs_dbg(VFS, | |
699 | "SMB2 dialect returned but not requested\n"); | |
700 | return -EIO; | |
701 | } else if (rsp->DialectRevision == cpu_to_le16(SMB21_PROT_ID)) { | |
702 | cifs_dbg(VFS, | |
703 | "SMB2.1 dialect returned but not requested\n"); | |
704 | return -EIO; | |
705 | } | |
706 | } else if (strcmp(ses->server->vals->version_string, | |
707 | SMBDEFAULT_VERSION_STRING) == 0) { | |
708 | if (rsp->DialectRevision == cpu_to_le16(SMB20_PROT_ID)) { | |
709 | cifs_dbg(VFS, | |
710 | "SMB2 dialect returned but not requested\n"); | |
711 | return -EIO; | |
712 | } else if (rsp->DialectRevision == cpu_to_le16(SMB21_PROT_ID)) { | |
713 | /* ops set to 3.0 by default for default so update */ | |
714 | ses->server->ops = &smb21_operations; | |
715 | } | |
590d08d3 SF |
716 | } else if (le16_to_cpu(rsp->DialectRevision) != |
717 | ses->server->vals->protocol_id) { | |
9764c02f SF |
718 | /* if requested single dialect ensure returned dialect matched */ |
719 | cifs_dbg(VFS, "Illegal 0x%x dialect returned: not requested\n", | |
590d08d3 | 720 | le16_to_cpu(rsp->DialectRevision)); |
9764c02f SF |
721 | return -EIO; |
722 | } | |
723 | ||
f96637be | 724 | cifs_dbg(FYI, "mode 0x%x\n", rsp->SecurityMode); |
ec2e4523 | 725 | |
e4aa25e7 | 726 | if (rsp->DialectRevision == cpu_to_le16(SMB20_PROT_ID)) |
f96637be | 727 | cifs_dbg(FYI, "negotiated smb2.0 dialect\n"); |
e4aa25e7 | 728 | else if (rsp->DialectRevision == cpu_to_le16(SMB21_PROT_ID)) |
f96637be | 729 | cifs_dbg(FYI, "negotiated smb2.1 dialect\n"); |
e4aa25e7 | 730 | else if (rsp->DialectRevision == cpu_to_le16(SMB30_PROT_ID)) |
f96637be | 731 | cifs_dbg(FYI, "negotiated smb3.0 dialect\n"); |
20b6d8b4 SF |
732 | else if (rsp->DialectRevision == cpu_to_le16(SMB302_PROT_ID)) |
733 | cifs_dbg(FYI, "negotiated smb3.02 dialect\n"); | |
5f7fbf73 SF |
734 | else if (rsp->DialectRevision == cpu_to_le16(SMB311_PROT_ID)) |
735 | cifs_dbg(FYI, "negotiated smb3.1.1 dialect\n"); | |
ec2e4523 | 736 | else { |
f799d623 | 737 | cifs_dbg(VFS, "Illegal dialect returned by server 0x%x\n", |
f96637be | 738 | le16_to_cpu(rsp->DialectRevision)); |
ec2e4523 PS |
739 | rc = -EIO; |
740 | goto neg_exit; | |
741 | } | |
742 | server->dialect = le16_to_cpu(rsp->DialectRevision); | |
743 | ||
8bd68c6e AA |
744 | /* |
745 | * Keep a copy of the hash after negprot. This hash will be | |
746 | * the starting hash value for all sessions made from this | |
747 | * server. | |
748 | */ | |
749 | memcpy(server->preauth_sha_hash, ses->preauth_sha_hash, | |
750 | SMB2_PREAUTH_HASH_SIZE); | |
0fdfef9a | 751 | |
e598d1d8 JL |
752 | /* SMB2 only has an extended negflavor */ |
753 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; | |
2365c4ea PS |
754 | /* set it to the maximum buffer size value we can send with 1 credit */ |
755 | server->maxBuf = min_t(unsigned int, le32_to_cpu(rsp->MaxTransactSize), | |
756 | SMB2_MAX_BUFFER_SIZE); | |
ec2e4523 PS |
757 | server->max_read = le32_to_cpu(rsp->MaxReadSize); |
758 | server->max_write = le32_to_cpu(rsp->MaxWriteSize); | |
ec2e4523 | 759 | server->sec_mode = le16_to_cpu(rsp->SecurityMode); |
07108d0e SF |
760 | if ((server->sec_mode & SMB2_SEC_MODE_FLAGS_ALL) != server->sec_mode) |
761 | cifs_dbg(FYI, "Server returned unexpected security mode 0x%x\n", | |
762 | server->sec_mode); | |
ec2e4523 | 763 | server->capabilities = le32_to_cpu(rsp->Capabilities); |
29e20f9c PS |
764 | /* Internal types */ |
765 | server->capabilities |= SMB2_NT_FIND | SMB2_LARGE_FILES; | |
ec2e4523 PS |
766 | |
767 | security_blob = smb2_get_data_area_len(&blob_offset, &blob_length, | |
49f466bd | 768 | (struct smb2_sync_hdr *)rsp); |
5d875cc9 SF |
769 | /* |
770 | * See MS-SMB2 section 2.2.4: if no blob, client picks default which | |
771 | * for us will be | |
772 | * ses->sectype = RawNTLMSSP; | |
773 | * but for time being this is our only auth choice so doesn't matter. | |
774 | * We just found a server which sets blob length to zero expecting raw. | |
775 | */ | |
67dbea2c | 776 | if (blob_length == 0) { |
5d875cc9 | 777 | cifs_dbg(FYI, "missing security blob on negprot\n"); |
67dbea2c PS |
778 | server->sec_ntlmssp = true; |
779 | } | |
3c1bf7e4 | 780 | |
38d77c50 | 781 | rc = cifs_enable_signing(server, ses->sign); |
9ddec561 JL |
782 | if (rc) |
783 | goto neg_exit; | |
ceb1b0b9 | 784 | if (blob_length) { |
ebdd207e | 785 | rc = decode_negTokenInit(security_blob, blob_length, server); |
ceb1b0b9 SF |
786 | if (rc == 1) |
787 | rc = 0; | |
788 | else if (rc == 0) | |
789 | rc = -EIO; | |
ec2e4523 | 790 | } |
5100d8a3 | 791 | |
5100d8a3 SF |
792 | if (rsp->DialectRevision == cpu_to_le16(SMB311_PROT_ID)) { |
793 | if (rsp->NegotiateContextCount) | |
977b6170 RS |
794 | rc = smb311_decode_neg_context(rsp, server, |
795 | rsp_iov.iov_len); | |
5100d8a3 SF |
796 | else |
797 | cifs_dbg(VFS, "Missing expected negotiate contexts\n"); | |
798 | } | |
ec2e4523 PS |
799 | neg_exit: |
800 | free_rsp_buf(resp_buftype, rsp); | |
801 | return rc; | |
802 | } | |
5478f9ba | 803 | |
ff1c038a SF |
804 | int smb3_validate_negotiate(const unsigned int xid, struct cifs_tcon *tcon) |
805 | { | |
2796d303 LL |
806 | int rc; |
807 | struct validate_negotiate_info_req *pneg_inbuf; | |
fe83bebc | 808 | struct validate_negotiate_info_rsp *pneg_rsp = NULL; |
ff1c038a | 809 | u32 rsplen; |
9764c02f | 810 | u32 inbuflen; /* max of 4 dialects */ |
ff1c038a SF |
811 | |
812 | cifs_dbg(FYI, "validate negotiate\n"); | |
813 | ||
8bd68c6e AA |
814 | /* In SMB3.11 preauth integrity supersedes validate negotiate */ |
815 | if (tcon->ses->server->dialect == SMB311_PROT_ID) | |
816 | return 0; | |
817 | ||
ff1c038a SF |
818 | /* |
819 | * validation ioctl must be signed, so no point sending this if we | |
0603c96f SF |
820 | * can not sign it (ie are not known user). Even if signing is not |
821 | * required (enabled but not negotiated), in those cases we selectively | |
ff1c038a | 822 | * sign just this, the first and only signed request on a connection. |
0603c96f | 823 | * Having validation of negotiate info helps reduce attack vectors. |
ff1c038a | 824 | */ |
0603c96f | 825 | if (tcon->ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) |
ff1c038a SF |
826 | return 0; /* validation requires signing */ |
827 | ||
0603c96f SF |
828 | if (tcon->ses->user_name == NULL) { |
829 | cifs_dbg(FYI, "Can't validate negotiate: null user mount\n"); | |
830 | return 0; /* validation requires signing */ | |
831 | } | |
832 | ||
833 | if (tcon->ses->session_flags & SMB2_SESSION_FLAG_IS_NULL) | |
834 | cifs_dbg(VFS, "Unexpected null user (anonymous) auth flag sent by server\n"); | |
835 | ||
2796d303 LL |
836 | pneg_inbuf = kmalloc(sizeof(*pneg_inbuf), GFP_NOFS); |
837 | if (!pneg_inbuf) | |
838 | return -ENOMEM; | |
839 | ||
840 | pneg_inbuf->Capabilities = | |
ff1c038a | 841 | cpu_to_le32(tcon->ses->server->vals->req_capabilities); |
2796d303 | 842 | memcpy(pneg_inbuf->Guid, tcon->ses->server->client_guid, |
39552ea8 | 843 | SMB2_CLIENT_GUID_SIZE); |
ff1c038a SF |
844 | |
845 | if (tcon->ses->sign) | |
2796d303 | 846 | pneg_inbuf->SecurityMode = |
ff1c038a SF |
847 | cpu_to_le16(SMB2_NEGOTIATE_SIGNING_REQUIRED); |
848 | else if (global_secflags & CIFSSEC_MAY_SIGN) | |
2796d303 | 849 | pneg_inbuf->SecurityMode = |
ff1c038a SF |
850 | cpu_to_le16(SMB2_NEGOTIATE_SIGNING_ENABLED); |
851 | else | |
2796d303 | 852 | pneg_inbuf->SecurityMode = 0; |
ff1c038a | 853 | |
9764c02f SF |
854 | |
855 | if (strcmp(tcon->ses->server->vals->version_string, | |
856 | SMB3ANY_VERSION_STRING) == 0) { | |
2796d303 LL |
857 | pneg_inbuf->Dialects[0] = cpu_to_le16(SMB30_PROT_ID); |
858 | pneg_inbuf->Dialects[1] = cpu_to_le16(SMB302_PROT_ID); | |
859 | pneg_inbuf->DialectCount = cpu_to_le16(2); | |
9764c02f | 860 | /* structure is big enough for 3 dialects, sending only 2 */ |
2796d303 LL |
861 | inbuflen = sizeof(*pneg_inbuf) - |
862 | sizeof(pneg_inbuf->Dialects[0]); | |
9764c02f SF |
863 | } else if (strcmp(tcon->ses->server->vals->version_string, |
864 | SMBDEFAULT_VERSION_STRING) == 0) { | |
2796d303 LL |
865 | pneg_inbuf->Dialects[0] = cpu_to_le16(SMB21_PROT_ID); |
866 | pneg_inbuf->Dialects[1] = cpu_to_le16(SMB30_PROT_ID); | |
867 | pneg_inbuf->Dialects[2] = cpu_to_le16(SMB302_PROT_ID); | |
868 | pneg_inbuf->DialectCount = cpu_to_le16(3); | |
9764c02f | 869 | /* structure is big enough for 3 dialects */ |
2796d303 | 870 | inbuflen = sizeof(*pneg_inbuf); |
9764c02f SF |
871 | } else { |
872 | /* otherwise specific dialect was requested */ | |
2796d303 | 873 | pneg_inbuf->Dialects[0] = |
9764c02f | 874 | cpu_to_le16(tcon->ses->server->vals->protocol_id); |
2796d303 | 875 | pneg_inbuf->DialectCount = cpu_to_le16(1); |
9764c02f | 876 | /* structure is big enough for 3 dialects, sending only 1 */ |
2796d303 LL |
877 | inbuflen = sizeof(*pneg_inbuf) - |
878 | sizeof(pneg_inbuf->Dialects[0]) * 2; | |
9764c02f | 879 | } |
ff1c038a SF |
880 | |
881 | rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, | |
882 | FSCTL_VALIDATE_NEGOTIATE_INFO, true /* is_fsctl */, | |
2796d303 | 883 | (char *)pneg_inbuf, inbuflen, (char **)&pneg_rsp, &rsplen); |
ff1c038a SF |
884 | |
885 | if (rc != 0) { | |
886 | cifs_dbg(VFS, "validate protocol negotiate failed: %d\n", rc); | |
2796d303 LL |
887 | rc = -EIO; |
888 | goto out_free_inbuf; | |
ff1c038a SF |
889 | } |
890 | ||
2796d303 LL |
891 | rc = -EIO; |
892 | if (rsplen != sizeof(*pneg_rsp)) { | |
7db0a6ef SF |
893 | cifs_dbg(VFS, "invalid protocol negotiate response size: %d\n", |
894 | rsplen); | |
895 | ||
896 | /* relax check since Mac returns max bufsize allowed on ioctl */ | |
2796d303 LL |
897 | if (rsplen > CIFSMaxBufSize || rsplen < sizeof(*pneg_rsp)) |
898 | goto out_free_rsp; | |
ff1c038a SF |
899 | } |
900 | ||
901 | /* check validate negotiate info response matches what we got earlier */ | |
9aca7e45 | 902 | if (pneg_rsp->Dialect != cpu_to_le16(tcon->ses->server->dialect)) |
ff1c038a SF |
903 | goto vneg_out; |
904 | ||
905 | if (pneg_rsp->SecurityMode != cpu_to_le16(tcon->ses->server->sec_mode)) | |
906 | goto vneg_out; | |
907 | ||
908 | /* do not validate server guid because not saved at negprot time yet */ | |
909 | ||
910 | if ((le32_to_cpu(pneg_rsp->Capabilities) | SMB2_NT_FIND | | |
911 | SMB2_LARGE_FILES) != tcon->ses->server->capabilities) | |
912 | goto vneg_out; | |
913 | ||
914 | /* validate negotiate successful */ | |
2796d303 | 915 | rc = 0; |
ff1c038a | 916 | cifs_dbg(FYI, "validate negotiate info successful\n"); |
2796d303 | 917 | goto out_free_rsp; |
ff1c038a SF |
918 | |
919 | vneg_out: | |
920 | cifs_dbg(VFS, "protocol revalidation - security settings mismatch\n"); | |
2796d303 | 921 | out_free_rsp: |
fe83bebc | 922 | kfree(pneg_rsp); |
2796d303 LL |
923 | out_free_inbuf: |
924 | kfree(pneg_inbuf); | |
925 | return rc; | |
ff1c038a SF |
926 | } |
927 | ||
ef65aaed SP |
928 | enum securityEnum |
929 | smb2_select_sectype(struct TCP_Server_Info *server, enum securityEnum requested) | |
930 | { | |
931 | switch (requested) { | |
932 | case Kerberos: | |
933 | case RawNTLMSSP: | |
934 | return requested; | |
935 | case NTLMv2: | |
936 | return RawNTLMSSP; | |
937 | case Unspecified: | |
938 | if (server->sec_ntlmssp && | |
939 | (global_secflags & CIFSSEC_MAY_NTLMSSP)) | |
940 | return RawNTLMSSP; | |
941 | if ((server->sec_kerberos || server->sec_mskerberos) && | |
942 | (global_secflags & CIFSSEC_MAY_KRB5)) | |
943 | return Kerberos; | |
944 | /* Fallthrough */ | |
945 | default: | |
946 | return Unspecified; | |
947 | } | |
948 | } | |
949 | ||
3baf1a7b SP |
950 | struct SMB2_sess_data { |
951 | unsigned int xid; | |
952 | struct cifs_ses *ses; | |
953 | struct nls_table *nls_cp; | |
954 | void (*func)(struct SMB2_sess_data *); | |
955 | int result; | |
956 | u64 previous_session; | |
957 | ||
958 | /* we will send the SMB in three pieces: | |
959 | * a fixed length beginning part, an optional | |
960 | * SPNEGO blob (which can be zero length), and a | |
961 | * last part which will include the strings | |
962 | * and rest of bcc area. This allows us to avoid | |
963 | * a large buffer 17K allocation | |
964 | */ | |
965 | int buf0_type; | |
966 | struct kvec iov[2]; | |
967 | }; | |
968 | ||
969 | static int | |
970 | SMB2_sess_alloc_buffer(struct SMB2_sess_data *sess_data) | |
971 | { | |
972 | int rc; | |
973 | struct cifs_ses *ses = sess_data->ses; | |
974 | struct smb2_sess_setup_req *req; | |
975 | struct TCP_Server_Info *server = ses->server; | |
88ea5cb7 | 976 | unsigned int total_len; |
3baf1a7b | 977 | |
88ea5cb7 RS |
978 | rc = smb2_plain_req_init(SMB2_SESSION_SETUP, NULL, (void **) &req, |
979 | &total_len); | |
3baf1a7b SP |
980 | if (rc) |
981 | return rc; | |
982 | ||
31473fc4 | 983 | /* First session, not a reauthenticate */ |
88ea5cb7 | 984 | req->sync_hdr.SessionId = 0; |
3baf1a7b SP |
985 | |
986 | /* if reconnect, we need to send previous sess id, otherwise it is 0 */ | |
987 | req->PreviousSessionId = sess_data->previous_session; | |
988 | ||
989 | req->Flags = 0; /* MBZ */ | |
d409014e SF |
990 | |
991 | /* enough to enable echos and oplocks and one max size write */ | |
992 | req->sync_hdr.CreditRequest = cpu_to_le16(130); | |
3baf1a7b SP |
993 | |
994 | /* only one of SMB2 signing flags may be set in SMB2 request */ | |
995 | if (server->sign) | |
996 | req->SecurityMode = SMB2_NEGOTIATE_SIGNING_REQUIRED; | |
997 | else if (global_secflags & CIFSSEC_MAY_SIGN) /* one flag unlike MUST_ */ | |
998 | req->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED; | |
999 | else | |
1000 | req->SecurityMode = 0; | |
1001 | ||
1002 | req->Capabilities = 0; | |
1003 | req->Channel = 0; /* MBZ */ | |
1004 | ||
1005 | sess_data->iov[0].iov_base = (char *)req; | |
88ea5cb7 RS |
1006 | /* 1 for pad */ |
1007 | sess_data->iov[0].iov_len = total_len - 1; | |
3baf1a7b SP |
1008 | /* |
1009 | * This variable will be used to clear the buffer | |
1010 | * allocated above in case of any error in the calling function. | |
1011 | */ | |
1012 | sess_data->buf0_type = CIFS_SMALL_BUFFER; | |
1013 | ||
1014 | return 0; | |
1015 | } | |
1016 | ||
1017 | static void | |
1018 | SMB2_sess_free_buffer(struct SMB2_sess_data *sess_data) | |
1019 | { | |
1020 | free_rsp_buf(sess_data->buf0_type, sess_data->iov[0].iov_base); | |
1021 | sess_data->buf0_type = CIFS_NO_BUFFER; | |
1022 | } | |
1023 | ||
1024 | static int | |
1025 | SMB2_sess_sendreceive(struct SMB2_sess_data *sess_data) | |
1026 | { | |
1027 | int rc; | |
40eff45b | 1028 | struct smb_rqst rqst; |
3baf1a7b | 1029 | struct smb2_sess_setup_req *req = sess_data->iov[0].iov_base; |
da502f7d | 1030 | struct kvec rsp_iov = { NULL, 0 }; |
3baf1a7b SP |
1031 | |
1032 | /* Testing shows that buffer offset must be at location of Buffer[0] */ | |
1033 | req->SecurityBufferOffset = | |
88ea5cb7 | 1034 | cpu_to_le16(sizeof(struct smb2_sess_setup_req) - 1 /* pad */); |
3baf1a7b SP |
1035 | req->SecurityBufferLength = cpu_to_le16(sess_data->iov[1].iov_len); |
1036 | ||
40eff45b RS |
1037 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
1038 | rqst.rq_iov = sess_data->iov; | |
1039 | rqst.rq_nvec = 2; | |
3baf1a7b | 1040 | |
40eff45b RS |
1041 | /* BB add code to build os and lm fields */ |
1042 | rc = cifs_send_recv(sess_data->xid, sess_data->ses, | |
1043 | &rqst, | |
88ea5cb7 RS |
1044 | &sess_data->buf0_type, |
1045 | CIFS_LOG_ERROR | CIFS_NEG_OP, &rsp_iov); | |
da502f7d PS |
1046 | cifs_small_buf_release(sess_data->iov[0].iov_base); |
1047 | memcpy(&sess_data->iov[0], &rsp_iov, sizeof(struct kvec)); | |
3baf1a7b SP |
1048 | |
1049 | return rc; | |
1050 | } | |
1051 | ||
1052 | static int | |
1053 | SMB2_sess_establish_session(struct SMB2_sess_data *sess_data) | |
1054 | { | |
1055 | int rc = 0; | |
1056 | struct cifs_ses *ses = sess_data->ses; | |
1057 | ||
1058 | mutex_lock(&ses->server->srv_mutex); | |
cabfb368 | 1059 | if (ses->server->ops->generate_signingkey) { |
3baf1a7b | 1060 | rc = ses->server->ops->generate_signingkey(ses); |
3baf1a7b SP |
1061 | if (rc) { |
1062 | cifs_dbg(FYI, | |
1063 | "SMB3 session key generation failed\n"); | |
1064 | mutex_unlock(&ses->server->srv_mutex); | |
cabfb368 | 1065 | return rc; |
3baf1a7b SP |
1066 | } |
1067 | } | |
1068 | if (!ses->server->session_estab) { | |
1069 | ses->server->sequence_number = 0x2; | |
1070 | ses->server->session_estab = true; | |
1071 | } | |
1072 | mutex_unlock(&ses->server->srv_mutex); | |
1073 | ||
1074 | cifs_dbg(FYI, "SMB2/3 session established successfully\n"); | |
1075 | spin_lock(&GlobalMid_Lock); | |
1076 | ses->status = CifsGood; | |
1077 | ses->need_reconnect = false; | |
1078 | spin_unlock(&GlobalMid_Lock); | |
3baf1a7b SP |
1079 | return rc; |
1080 | } | |
1081 | ||
1082 | #ifdef CONFIG_CIFS_UPCALL | |
1083 | static void | |
1084 | SMB2_auth_kerberos(struct SMB2_sess_data *sess_data) | |
1085 | { | |
1086 | int rc; | |
1087 | struct cifs_ses *ses = sess_data->ses; | |
1088 | struct cifs_spnego_msg *msg; | |
1089 | struct key *spnego_key = NULL; | |
1090 | struct smb2_sess_setup_rsp *rsp = NULL; | |
1091 | ||
1092 | rc = SMB2_sess_alloc_buffer(sess_data); | |
1093 | if (rc) | |
1094 | goto out; | |
1095 | ||
1096 | spnego_key = cifs_get_spnego_key(ses); | |
1097 | if (IS_ERR(spnego_key)) { | |
1098 | rc = PTR_ERR(spnego_key); | |
1099 | spnego_key = NULL; | |
1100 | goto out; | |
1101 | } | |
1102 | ||
1103 | msg = spnego_key->payload.data[0]; | |
1104 | /* | |
1105 | * check version field to make sure that cifs.upcall is | |
1106 | * sending us a response in an expected form | |
1107 | */ | |
1108 | if (msg->version != CIFS_SPNEGO_UPCALL_VERSION) { | |
1109 | cifs_dbg(VFS, | |
1110 | "bad cifs.upcall version. Expected %d got %d", | |
1111 | CIFS_SPNEGO_UPCALL_VERSION, msg->version); | |
1112 | rc = -EKEYREJECTED; | |
1113 | goto out_put_spnego_key; | |
1114 | } | |
1115 | ||
1116 | ses->auth_key.response = kmemdup(msg->data, msg->sesskey_len, | |
1117 | GFP_KERNEL); | |
1118 | if (!ses->auth_key.response) { | |
1119 | cifs_dbg(VFS, | |
1120 | "Kerberos can't allocate (%u bytes) memory", | |
1121 | msg->sesskey_len); | |
1122 | rc = -ENOMEM; | |
1123 | goto out_put_spnego_key; | |
1124 | } | |
1125 | ses->auth_key.len = msg->sesskey_len; | |
1126 | ||
1127 | sess_data->iov[1].iov_base = msg->data + msg->sesskey_len; | |
1128 | sess_data->iov[1].iov_len = msg->secblob_len; | |
1129 | ||
1130 | rc = SMB2_sess_sendreceive(sess_data); | |
1131 | if (rc) | |
1132 | goto out_put_spnego_key; | |
1133 | ||
1134 | rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base; | |
49f466bd | 1135 | ses->Suid = rsp->sync_hdr.SessionId; |
3baf1a7b SP |
1136 | |
1137 | ses->session_flags = le16_to_cpu(rsp->SessionFlags); | |
3baf1a7b SP |
1138 | |
1139 | rc = SMB2_sess_establish_session(sess_data); | |
1140 | out_put_spnego_key: | |
1141 | key_invalidate(spnego_key); | |
1142 | key_put(spnego_key); | |
1143 | out: | |
1144 | sess_data->result = rc; | |
1145 | sess_data->func = NULL; | |
1146 | SMB2_sess_free_buffer(sess_data); | |
1147 | } | |
1148 | #else | |
1149 | static void | |
1150 | SMB2_auth_kerberos(struct SMB2_sess_data *sess_data) | |
1151 | { | |
1152 | cifs_dbg(VFS, "Kerberos negotiated but upcall support disabled!\n"); | |
1153 | sess_data->result = -EOPNOTSUPP; | |
1154 | sess_data->func = NULL; | |
1155 | } | |
1156 | #endif | |
1157 | ||
166cea4d SP |
1158 | static void |
1159 | SMB2_sess_auth_rawntlmssp_authenticate(struct SMB2_sess_data *sess_data); | |
1160 | ||
1161 | static void | |
1162 | SMB2_sess_auth_rawntlmssp_negotiate(struct SMB2_sess_data *sess_data) | |
5478f9ba | 1163 | { |
166cea4d SP |
1164 | int rc; |
1165 | struct cifs_ses *ses = sess_data->ses; | |
5478f9ba | 1166 | struct smb2_sess_setup_rsp *rsp = NULL; |
166cea4d | 1167 | char *ntlmssp_blob = NULL; |
5478f9ba | 1168 | bool use_spnego = false; /* else use raw ntlmssp */ |
166cea4d | 1169 | u16 blob_length = 0; |
d4e63bd6 | 1170 | |
5478f9ba PS |
1171 | /* |
1172 | * If memory allocation is successful, caller of this function | |
1173 | * frees it. | |
1174 | */ | |
1175 | ses->ntlmssp = kmalloc(sizeof(struct ntlmssp_auth), GFP_KERNEL); | |
166cea4d SP |
1176 | if (!ses->ntlmssp) { |
1177 | rc = -ENOMEM; | |
1178 | goto out_err; | |
1179 | } | |
5c234aa5 | 1180 | ses->ntlmssp->sesskey_per_smbsess = true; |
5478f9ba | 1181 | |
166cea4d | 1182 | rc = SMB2_sess_alloc_buffer(sess_data); |
5478f9ba | 1183 | if (rc) |
166cea4d | 1184 | goto out_err; |
5478f9ba | 1185 | |
166cea4d SP |
1186 | ntlmssp_blob = kmalloc(sizeof(struct _NEGOTIATE_MESSAGE), |
1187 | GFP_KERNEL); | |
1188 | if (ntlmssp_blob == NULL) { | |
1189 | rc = -ENOMEM; | |
1190 | goto out; | |
1191 | } | |
c2afb814 | 1192 | |
166cea4d SP |
1193 | build_ntlmssp_negotiate_blob(ntlmssp_blob, ses); |
1194 | if (use_spnego) { | |
1195 | /* BB eventually need to add this */ | |
1196 | cifs_dbg(VFS, "spnego not supported for SMB2 yet\n"); | |
1197 | rc = -EOPNOTSUPP; | |
1198 | goto out; | |
1199 | } else { | |
1200 | blob_length = sizeof(struct _NEGOTIATE_MESSAGE); | |
1201 | /* with raw NTLMSSP we don't encapsulate in SPNEGO */ | |
1202 | } | |
1203 | sess_data->iov[1].iov_base = ntlmssp_blob; | |
1204 | sess_data->iov[1].iov_len = blob_length; | |
c2afb814 | 1205 | |
166cea4d SP |
1206 | rc = SMB2_sess_sendreceive(sess_data); |
1207 | rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base; | |
5478f9ba | 1208 | |
166cea4d SP |
1209 | /* If true, rc here is expected and not an error */ |
1210 | if (sess_data->buf0_type != CIFS_NO_BUFFER && | |
49f466bd | 1211 | rsp->sync_hdr.Status == STATUS_MORE_PROCESSING_REQUIRED) |
166cea4d | 1212 | rc = 0; |
38d77c50 | 1213 | |
166cea4d SP |
1214 | if (rc) |
1215 | goto out; | |
5478f9ba | 1216 | |
1fc6ad2f | 1217 | if (offsetof(struct smb2_sess_setup_rsp, Buffer) != |
166cea4d SP |
1218 | le16_to_cpu(rsp->SecurityBufferOffset)) { |
1219 | cifs_dbg(VFS, "Invalid security buffer offset %d\n", | |
1220 | le16_to_cpu(rsp->SecurityBufferOffset)); | |
5478f9ba | 1221 | rc = -EIO; |
166cea4d | 1222 | goto out; |
5478f9ba | 1223 | } |
166cea4d SP |
1224 | rc = decode_ntlmssp_challenge(rsp->Buffer, |
1225 | le16_to_cpu(rsp->SecurityBufferLength), ses); | |
1226 | if (rc) | |
1227 | goto out; | |
5478f9ba | 1228 | |
166cea4d | 1229 | cifs_dbg(FYI, "rawntlmssp session setup challenge phase\n"); |
5478f9ba | 1230 | |
5478f9ba | 1231 | |
49f466bd | 1232 | ses->Suid = rsp->sync_hdr.SessionId; |
166cea4d | 1233 | ses->session_flags = le16_to_cpu(rsp->SessionFlags); |
166cea4d SP |
1234 | |
1235 | out: | |
1236 | kfree(ntlmssp_blob); | |
1237 | SMB2_sess_free_buffer(sess_data); | |
1238 | if (!rc) { | |
1239 | sess_data->result = 0; | |
1240 | sess_data->func = SMB2_sess_auth_rawntlmssp_authenticate; | |
1241 | return; | |
1242 | } | |
1243 | out_err: | |
1244 | kfree(ses->ntlmssp); | |
1245 | ses->ntlmssp = NULL; | |
1246 | sess_data->result = rc; | |
1247 | sess_data->func = NULL; | |
1248 | } | |
5478f9ba | 1249 | |
166cea4d SP |
1250 | static void |
1251 | SMB2_sess_auth_rawntlmssp_authenticate(struct SMB2_sess_data *sess_data) | |
1252 | { | |
1253 | int rc; | |
1254 | struct cifs_ses *ses = sess_data->ses; | |
1255 | struct smb2_sess_setup_req *req; | |
1256 | struct smb2_sess_setup_rsp *rsp = NULL; | |
1257 | unsigned char *ntlmssp_blob = NULL; | |
1258 | bool use_spnego = false; /* else use raw ntlmssp */ | |
1259 | u16 blob_length = 0; | |
5478f9ba | 1260 | |
166cea4d SP |
1261 | rc = SMB2_sess_alloc_buffer(sess_data); |
1262 | if (rc) | |
1263 | goto out; | |
5478f9ba | 1264 | |
166cea4d | 1265 | req = (struct smb2_sess_setup_req *) sess_data->iov[0].iov_base; |
88ea5cb7 | 1266 | req->sync_hdr.SessionId = ses->Suid; |
166cea4d SP |
1267 | |
1268 | rc = build_ntlmssp_auth_blob(&ntlmssp_blob, &blob_length, ses, | |
1269 | sess_data->nls_cp); | |
1270 | if (rc) { | |
1271 | cifs_dbg(FYI, "build_ntlmssp_auth_blob failed %d\n", rc); | |
1272 | goto out; | |
5478f9ba PS |
1273 | } |
1274 | ||
166cea4d SP |
1275 | if (use_spnego) { |
1276 | /* BB eventually need to add this */ | |
1277 | cifs_dbg(VFS, "spnego not supported for SMB2 yet\n"); | |
1278 | rc = -EOPNOTSUPP; | |
1279 | goto out; | |
1280 | } | |
1281 | sess_data->iov[1].iov_base = ntlmssp_blob; | |
1282 | sess_data->iov[1].iov_len = blob_length; | |
5478f9ba | 1283 | |
166cea4d SP |
1284 | rc = SMB2_sess_sendreceive(sess_data); |
1285 | if (rc) | |
1286 | goto out; | |
1287 | ||
1288 | rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base; | |
1289 | ||
49f466bd | 1290 | ses->Suid = rsp->sync_hdr.SessionId; |
5478f9ba | 1291 | ses->session_flags = le16_to_cpu(rsp->SessionFlags); |
5478f9ba | 1292 | |
166cea4d SP |
1293 | rc = SMB2_sess_establish_session(sess_data); |
1294 | out: | |
1295 | kfree(ntlmssp_blob); | |
1296 | SMB2_sess_free_buffer(sess_data); | |
1297 | kfree(ses->ntlmssp); | |
1298 | ses->ntlmssp = NULL; | |
1299 | sess_data->result = rc; | |
1300 | sess_data->func = NULL; | |
1301 | } | |
d4e63bd6 | 1302 | |
166cea4d SP |
1303 | static int |
1304 | SMB2_select_sec(struct cifs_ses *ses, struct SMB2_sess_data *sess_data) | |
1305 | { | |
ef65aaed SP |
1306 | int type; |
1307 | ||
1308 | type = smb2_select_sectype(ses->server, ses->sectype); | |
1309 | cifs_dbg(FYI, "sess setup type %d\n", type); | |
1310 | if (type == Unspecified) { | |
1311 | cifs_dbg(VFS, | |
1312 | "Unable to select appropriate authentication method!"); | |
1313 | return -EINVAL; | |
1314 | } | |
d4e63bd6 | 1315 | |
ef65aaed | 1316 | switch (type) { |
166cea4d SP |
1317 | case Kerberos: |
1318 | sess_data->func = SMB2_auth_kerberos; | |
1319 | break; | |
1320 | case RawNTLMSSP: | |
1321 | sess_data->func = SMB2_sess_auth_rawntlmssp_negotiate; | |
1322 | break; | |
1323 | default: | |
ef65aaed | 1324 | cifs_dbg(VFS, "secType %d not supported!\n", type); |
166cea4d | 1325 | return -EOPNOTSUPP; |
d4e63bd6 SP |
1326 | } |
1327 | ||
166cea4d SP |
1328 | return 0; |
1329 | } | |
1330 | ||
1331 | int | |
1332 | SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses, | |
1333 | const struct nls_table *nls_cp) | |
1334 | { | |
1335 | int rc = 0; | |
1336 | struct TCP_Server_Info *server = ses->server; | |
1337 | struct SMB2_sess_data *sess_data; | |
1338 | ||
1339 | cifs_dbg(FYI, "Session Setup\n"); | |
1340 | ||
1341 | if (!server) { | |
1342 | WARN(1, "%s: server is NULL!\n", __func__); | |
1343 | return -EIO; | |
d4e63bd6 | 1344 | } |
d4e63bd6 | 1345 | |
166cea4d SP |
1346 | sess_data = kzalloc(sizeof(struct SMB2_sess_data), GFP_KERNEL); |
1347 | if (!sess_data) | |
1348 | return -ENOMEM; | |
1349 | ||
1350 | rc = SMB2_select_sec(ses, sess_data); | |
1351 | if (rc) | |
1352 | goto out; | |
1353 | sess_data->xid = xid; | |
1354 | sess_data->ses = ses; | |
1355 | sess_data->buf0_type = CIFS_NO_BUFFER; | |
1356 | sess_data->nls_cp = (struct nls_table *) nls_cp; | |
b2adf22f | 1357 | sess_data->previous_session = ses->Suid; |
166cea4d | 1358 | |
8bd68c6e AA |
1359 | /* |
1360 | * Initialize the session hash with the server one. | |
1361 | */ | |
1362 | memcpy(ses->preauth_sha_hash, ses->server->preauth_sha_hash, | |
1363 | SMB2_PREAUTH_HASH_SIZE); | |
8bd68c6e | 1364 | |
166cea4d SP |
1365 | while (sess_data->func) |
1366 | sess_data->func(sess_data); | |
1367 | ||
c721c389 SF |
1368 | if ((ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) && (ses->sign)) |
1369 | cifs_dbg(VFS, "signing requested but authenticated as guest\n"); | |
3baf1a7b | 1370 | rc = sess_data->result; |
166cea4d | 1371 | out: |
3baf1a7b | 1372 | kfree(sess_data); |
5478f9ba PS |
1373 | return rc; |
1374 | } | |
1375 | ||
1376 | int | |
1377 | SMB2_logoff(const unsigned int xid, struct cifs_ses *ses) | |
1378 | { | |
40eff45b | 1379 | struct smb_rqst rqst; |
5478f9ba PS |
1380 | struct smb2_logoff_req *req; /* response is also trivial struct */ |
1381 | int rc = 0; | |
1382 | struct TCP_Server_Info *server; | |
7fb8986e | 1383 | int flags = 0; |
45305eda RS |
1384 | unsigned int total_len; |
1385 | struct kvec iov[1]; | |
1386 | struct kvec rsp_iov; | |
1387 | int resp_buf_type; | |
5478f9ba | 1388 | |
f96637be | 1389 | cifs_dbg(FYI, "disconnect session %p\n", ses); |
5478f9ba PS |
1390 | |
1391 | if (ses && (ses->server)) | |
1392 | server = ses->server; | |
1393 | else | |
1394 | return -EIO; | |
1395 | ||
eb4c7df6 SP |
1396 | /* no need to send SMB logoff if uid already closed due to reconnect */ |
1397 | if (ses->need_reconnect) | |
1398 | goto smb2_session_already_dead; | |
1399 | ||
45305eda | 1400 | rc = smb2_plain_req_init(SMB2_LOGOFF, NULL, (void **) &req, &total_len); |
5478f9ba PS |
1401 | if (rc) |
1402 | return rc; | |
1403 | ||
1404 | /* since no tcon, smb2_init can not do this, so do here */ | |
45305eda | 1405 | req->sync_hdr.SessionId = ses->Suid; |
7fb8986e PS |
1406 | |
1407 | if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) | |
1408 | flags |= CIFS_TRANSFORM_REQ; | |
1409 | else if (server->sign) | |
45305eda RS |
1410 | req->sync_hdr.Flags |= SMB2_FLAGS_SIGNED; |
1411 | ||
1412 | flags |= CIFS_NO_RESP; | |
1413 | ||
1414 | iov[0].iov_base = (char *)req; | |
1415 | iov[0].iov_len = total_len; | |
5478f9ba | 1416 | |
40eff45b RS |
1417 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
1418 | rqst.rq_iov = iov; | |
1419 | rqst.rq_nvec = 1; | |
1420 | ||
1421 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buf_type, flags, &rsp_iov); | |
da502f7d | 1422 | cifs_small_buf_release(req); |
5478f9ba PS |
1423 | /* |
1424 | * No tcon so can't do | |
1425 | * cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_fail[SMB2...]); | |
1426 | */ | |
eb4c7df6 SP |
1427 | |
1428 | smb2_session_already_dead: | |
5478f9ba PS |
1429 | return rc; |
1430 | } | |
faaf946a PS |
1431 | |
1432 | static inline void cifs_stats_fail_inc(struct cifs_tcon *tcon, uint16_t code) | |
1433 | { | |
d60622eb | 1434 | cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_failed[code]); |
faaf946a PS |
1435 | } |
1436 | ||
1437 | #define MAX_SHARENAME_LENGTH (255 /* server */ + 80 /* share */ + 1 /* NULL */) | |
1438 | ||
de9f68df SF |
1439 | /* These are similar values to what Windows uses */ |
1440 | static inline void init_copy_chunk_defaults(struct cifs_tcon *tcon) | |
1441 | { | |
1442 | tcon->max_chunks = 256; | |
1443 | tcon->max_bytes_chunk = 1048576; | |
1444 | tcon->max_bytes_copy = 16777216; | |
1445 | } | |
1446 | ||
faaf946a PS |
1447 | int |
1448 | SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree, | |
1449 | struct cifs_tcon *tcon, const struct nls_table *cp) | |
1450 | { | |
40eff45b | 1451 | struct smb_rqst rqst; |
faaf946a PS |
1452 | struct smb2_tree_connect_req *req; |
1453 | struct smb2_tree_connect_rsp *rsp = NULL; | |
1454 | struct kvec iov[2]; | |
db3b5474 | 1455 | struct kvec rsp_iov = { NULL, 0 }; |
faaf946a PS |
1456 | int rc = 0; |
1457 | int resp_buftype; | |
1458 | int unc_path_len; | |
faaf946a | 1459 | __le16 *unc_path = NULL; |
7fb8986e | 1460 | int flags = 0; |
661bb943 | 1461 | unsigned int total_len; |
faaf946a | 1462 | |
f96637be | 1463 | cifs_dbg(FYI, "TCON\n"); |
faaf946a | 1464 | |
68a6afa7 | 1465 | if (!(ses->server) || !tree) |
faaf946a PS |
1466 | return -EIO; |
1467 | ||
faaf946a PS |
1468 | unc_path = kmalloc(MAX_SHARENAME_LENGTH * 2, GFP_KERNEL); |
1469 | if (unc_path == NULL) | |
1470 | return -ENOMEM; | |
1471 | ||
1472 | unc_path_len = cifs_strtoUTF16(unc_path, tree, strlen(tree), cp) + 1; | |
1473 | unc_path_len *= 2; | |
1474 | if (unc_path_len < 2) { | |
1475 | kfree(unc_path); | |
1476 | return -EINVAL; | |
1477 | } | |
1478 | ||
806a28ef | 1479 | /* SMB2 TREE_CONNECT request must be called with TreeId == 0 */ |
b327a717 | 1480 | tcon->tid = 0; |
806a28ef | 1481 | |
661bb943 RS |
1482 | rc = smb2_plain_req_init(SMB2_TREE_CONNECT, tcon, (void **) &req, |
1483 | &total_len); | |
faaf946a PS |
1484 | if (rc) { |
1485 | kfree(unc_path); | |
1486 | return rc; | |
1487 | } | |
1488 | ||
5a77e75f | 1489 | if (smb3_encryption_required(tcon)) |
ae6f8dd4 | 1490 | flags |= CIFS_TRANSFORM_REQ; |
faaf946a PS |
1491 | |
1492 | iov[0].iov_base = (char *)req; | |
661bb943 RS |
1493 | /* 1 for pad */ |
1494 | iov[0].iov_len = total_len - 1; | |
faaf946a PS |
1495 | |
1496 | /* Testing shows that buffer offset must be at location of Buffer[0] */ | |
1497 | req->PathOffset = cpu_to_le16(sizeof(struct smb2_tree_connect_req) | |
661bb943 | 1498 | - 1 /* pad */); |
faaf946a PS |
1499 | req->PathLength = cpu_to_le16(unc_path_len - 2); |
1500 | iov[1].iov_base = unc_path; | |
1501 | iov[1].iov_len = unc_path_len; | |
1502 | ||
6188f28b SF |
1503 | /* 3.11 tcon req must be signed if not encrypted. See MS-SMB2 3.2.4.1.1 */ |
1504 | if ((ses->server->dialect == SMB311_PROT_ID) && | |
5a77e75f | 1505 | !smb3_encryption_required(tcon)) |
6188f28b SF |
1506 | req->sync_hdr.Flags |= SMB2_FLAGS_SIGNED; |
1507 | ||
40eff45b RS |
1508 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
1509 | rqst.rq_iov = iov; | |
1510 | rqst.rq_nvec = 2; | |
1511 | ||
1512 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d PS |
1513 | cifs_small_buf_release(req); |
1514 | rsp = (struct smb2_tree_connect_rsp *)rsp_iov.iov_base; | |
faaf946a PS |
1515 | |
1516 | if (rc != 0) { | |
1517 | if (tcon) { | |
1518 | cifs_stats_fail_inc(tcon, SMB2_TREE_CONNECT_HE); | |
1519 | tcon->need_reconnect = true; | |
1520 | } | |
1521 | goto tcon_error_exit; | |
1522 | } | |
1523 | ||
cd123007 CJ |
1524 | switch (rsp->ShareType) { |
1525 | case SMB2_SHARE_TYPE_DISK: | |
f96637be | 1526 | cifs_dbg(FYI, "connection to disk share\n"); |
cd123007 CJ |
1527 | break; |
1528 | case SMB2_SHARE_TYPE_PIPE: | |
b327a717 | 1529 | tcon->pipe = true; |
f96637be | 1530 | cifs_dbg(FYI, "connection to pipe share\n"); |
cd123007 CJ |
1531 | break; |
1532 | case SMB2_SHARE_TYPE_PRINT: | |
b327a717 | 1533 | tcon->print = true; |
f96637be | 1534 | cifs_dbg(FYI, "connection to printer\n"); |
cd123007 CJ |
1535 | break; |
1536 | default: | |
f96637be | 1537 | cifs_dbg(VFS, "unknown share type %d\n", rsp->ShareType); |
faaf946a PS |
1538 | rc = -EOPNOTSUPP; |
1539 | goto tcon_error_exit; | |
1540 | } | |
1541 | ||
1542 | tcon->share_flags = le32_to_cpu(rsp->ShareFlags); | |
769ee6a4 | 1543 | tcon->capabilities = rsp->Capabilities; /* we keep caps little endian */ |
faaf946a PS |
1544 | tcon->maximal_access = le32_to_cpu(rsp->MaximalAccess); |
1545 | tcon->tidStatus = CifsGood; | |
1546 | tcon->need_reconnect = false; | |
49f466bd | 1547 | tcon->tid = rsp->sync_hdr.TreeId; |
46b51d08 | 1548 | strlcpy(tcon->treeName, tree, sizeof(tcon->treeName)); |
faaf946a PS |
1549 | |
1550 | if ((rsp->Capabilities & SMB2_SHARE_CAP_DFS) && | |
1551 | ((tcon->share_flags & SHI1005_FLAGS_DFS) == 0)) | |
f96637be | 1552 | cifs_dbg(VFS, "DFS capability contradicts DFS flag\n"); |
ae6f8dd4 PS |
1553 | |
1554 | if (tcon->seal && | |
1555 | !(tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION)) | |
1556 | cifs_dbg(VFS, "Encryption is requested but not supported\n"); | |
1557 | ||
de9f68df | 1558 | init_copy_chunk_defaults(tcon); |
ff1c038a SF |
1559 | if (tcon->ses->server->ops->validate_negotiate) |
1560 | rc = tcon->ses->server->ops->validate_negotiate(xid, tcon); | |
faaf946a PS |
1561 | tcon_exit: |
1562 | free_rsp_buf(resp_buftype, rsp); | |
1563 | kfree(unc_path); | |
1564 | return rc; | |
1565 | ||
1566 | tcon_error_exit: | |
49f466bd | 1567 | if (rsp && rsp->sync_hdr.Status == STATUS_BAD_NETWORK_NAME) { |
f96637be | 1568 | cifs_dbg(VFS, "BAD_NETWORK_NAME: %s\n", tree); |
faaf946a PS |
1569 | } |
1570 | goto tcon_exit; | |
1571 | } | |
1572 | ||
1573 | int | |
1574 | SMB2_tdis(const unsigned int xid, struct cifs_tcon *tcon) | |
1575 | { | |
40eff45b | 1576 | struct smb_rqst rqst; |
faaf946a PS |
1577 | struct smb2_tree_disconnect_req *req; /* response is trivial */ |
1578 | int rc = 0; | |
faaf946a | 1579 | struct cifs_ses *ses = tcon->ses; |
7fb8986e | 1580 | int flags = 0; |
4eecf4cf RS |
1581 | unsigned int total_len; |
1582 | struct kvec iov[1]; | |
1583 | struct kvec rsp_iov; | |
1584 | int resp_buf_type; | |
faaf946a | 1585 | |
f96637be | 1586 | cifs_dbg(FYI, "Tree Disconnect\n"); |
faaf946a | 1587 | |
68a6afa7 | 1588 | if (!ses || !(ses->server)) |
faaf946a PS |
1589 | return -EIO; |
1590 | ||
1591 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) | |
1592 | return 0; | |
1593 | ||
4eecf4cf RS |
1594 | rc = smb2_plain_req_init(SMB2_TREE_DISCONNECT, tcon, (void **) &req, |
1595 | &total_len); | |
faaf946a PS |
1596 | if (rc) |
1597 | return rc; | |
1598 | ||
5a77e75f | 1599 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
1600 | flags |= CIFS_TRANSFORM_REQ; |
1601 | ||
4eecf4cf RS |
1602 | flags |= CIFS_NO_RESP; |
1603 | ||
1604 | iov[0].iov_base = (char *)req; | |
1605 | iov[0].iov_len = total_len; | |
1606 | ||
40eff45b RS |
1607 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
1608 | rqst.rq_iov = iov; | |
1609 | rqst.rq_nvec = 1; | |
1610 | ||
1611 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buf_type, flags, &rsp_iov); | |
da502f7d | 1612 | cifs_small_buf_release(req); |
faaf946a PS |
1613 | if (rc) |
1614 | cifs_stats_fail_inc(tcon, SMB2_TREE_DISCONNECT_HE); | |
1615 | ||
1616 | return rc; | |
1617 | } | |
2503a0db | 1618 | |
b8c32dbb | 1619 | |
63eb3def PS |
1620 | static struct create_durable * |
1621 | create_durable_buf(void) | |
1622 | { | |
1623 | struct create_durable *buf; | |
1624 | ||
1625 | buf = kzalloc(sizeof(struct create_durable), GFP_KERNEL); | |
1626 | if (!buf) | |
1627 | return NULL; | |
1628 | ||
1629 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
9cbc0b73 | 1630 | (struct create_durable, Data)); |
63eb3def PS |
1631 | buf->ccontext.DataLength = cpu_to_le32(16); |
1632 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
1633 | (struct create_durable, Name)); | |
1634 | buf->ccontext.NameLength = cpu_to_le16(4); | |
12197a7f | 1635 | /* SMB2_CREATE_DURABLE_HANDLE_REQUEST is "DHnQ" */ |
63eb3def PS |
1636 | buf->Name[0] = 'D'; |
1637 | buf->Name[1] = 'H'; | |
1638 | buf->Name[2] = 'n'; | |
1639 | buf->Name[3] = 'Q'; | |
1640 | return buf; | |
1641 | } | |
1642 | ||
9cbc0b73 PS |
1643 | static struct create_durable * |
1644 | create_reconnect_durable_buf(struct cifs_fid *fid) | |
1645 | { | |
1646 | struct create_durable *buf; | |
1647 | ||
1648 | buf = kzalloc(sizeof(struct create_durable), GFP_KERNEL); | |
1649 | if (!buf) | |
1650 | return NULL; | |
1651 | ||
1652 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
1653 | (struct create_durable, Data)); | |
1654 | buf->ccontext.DataLength = cpu_to_le32(16); | |
1655 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
1656 | (struct create_durable, Name)); | |
1657 | buf->ccontext.NameLength = cpu_to_le16(4); | |
1658 | buf->Data.Fid.PersistentFileId = fid->persistent_fid; | |
1659 | buf->Data.Fid.VolatileFileId = fid->volatile_fid; | |
12197a7f | 1660 | /* SMB2_CREATE_DURABLE_HANDLE_RECONNECT is "DHnC" */ |
9cbc0b73 PS |
1661 | buf->Name[0] = 'D'; |
1662 | buf->Name[1] = 'H'; | |
1663 | buf->Name[2] = 'n'; | |
1664 | buf->Name[3] = 'C'; | |
1665 | return buf; | |
1666 | } | |
1667 | ||
b8c32dbb | 1668 | static __u8 |
42873b0a | 1669 | parse_lease_state(struct TCP_Server_Info *server, struct smb2_create_rsp *rsp, |
96164ab2 | 1670 | unsigned int *epoch, char *lease_key) |
b8c32dbb PS |
1671 | { |
1672 | char *data_offset; | |
b5c7cde3 | 1673 | struct create_context *cc; |
deb7deff JM |
1674 | unsigned int next; |
1675 | unsigned int remaining; | |
fd554396 | 1676 | char *name; |
b8c32dbb | 1677 | |
1fc6ad2f | 1678 | data_offset = (char *)rsp + le32_to_cpu(rsp->CreateContextsOffset); |
deb7deff | 1679 | remaining = le32_to_cpu(rsp->CreateContextsLength); |
b5c7cde3 | 1680 | cc = (struct create_context *)data_offset; |
deb7deff | 1681 | while (remaining >= sizeof(struct create_context)) { |
b5c7cde3 | 1682 | name = le16_to_cpu(cc->NameOffset) + (char *)cc; |
deb7deff JM |
1683 | if (le16_to_cpu(cc->NameLength) == 4 && |
1684 | strncmp(name, "RqLs", 4) == 0) | |
96164ab2 RS |
1685 | return server->ops->parse_lease_buf(cc, epoch, |
1686 | lease_key); | |
deb7deff JM |
1687 | |
1688 | next = le32_to_cpu(cc->Next); | |
1689 | if (!next) | |
1690 | break; | |
1691 | remaining -= next; | |
1692 | cc = (struct create_context *)((char *)cc + next); | |
1693 | } | |
b8c32dbb | 1694 | |
b5c7cde3 | 1695 | return 0; |
b8c32dbb PS |
1696 | } |
1697 | ||
d22cbfec | 1698 | static int |
a41a28bd | 1699 | add_lease_context(struct TCP_Server_Info *server, struct kvec *iov, |
729c0c9d | 1700 | unsigned int *num_iovec, u8 *lease_key, __u8 *oplock) |
d22cbfec PS |
1701 | { |
1702 | struct smb2_create_req *req = iov[0].iov_base; | |
1703 | unsigned int num = *num_iovec; | |
1704 | ||
729c0c9d | 1705 | iov[num].iov_base = server->ops->create_lease_buf(lease_key, *oplock); |
d22cbfec PS |
1706 | if (iov[num].iov_base == NULL) |
1707 | return -ENOMEM; | |
a41a28bd | 1708 | iov[num].iov_len = server->vals->create_lease_size; |
d22cbfec PS |
1709 | req->RequestedOplockLevel = SMB2_OPLOCK_LEVEL_LEASE; |
1710 | if (!req->CreateContextsOffset) | |
1711 | req->CreateContextsOffset = cpu_to_le32( | |
4f33bc35 | 1712 | sizeof(struct smb2_create_req) + |
d22cbfec | 1713 | iov[num - 1].iov_len); |
a41a28bd PS |
1714 | le32_add_cpu(&req->CreateContextsLength, |
1715 | server->vals->create_lease_size); | |
d22cbfec PS |
1716 | *num_iovec = num + 1; |
1717 | return 0; | |
1718 | } | |
1719 | ||
b56eae4d SF |
1720 | static struct create_durable_v2 * |
1721 | create_durable_v2_buf(struct cifs_fid *pfid) | |
1722 | { | |
1723 | struct create_durable_v2 *buf; | |
1724 | ||
1725 | buf = kzalloc(sizeof(struct create_durable_v2), GFP_KERNEL); | |
1726 | if (!buf) | |
1727 | return NULL; | |
1728 | ||
1729 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
1730 | (struct create_durable_v2, dcontext)); | |
1731 | buf->ccontext.DataLength = cpu_to_le32(sizeof(struct durable_context_v2)); | |
1732 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
1733 | (struct create_durable_v2, Name)); | |
1734 | buf->ccontext.NameLength = cpu_to_le16(4); | |
1735 | ||
1736 | buf->dcontext.Timeout = 0; /* Should this be configurable by workload */ | |
1737 | buf->dcontext.Flags = cpu_to_le32(SMB2_DHANDLE_FLAG_PERSISTENT); | |
fa70b87c | 1738 | generate_random_uuid(buf->dcontext.CreateGuid); |
b56eae4d SF |
1739 | memcpy(pfid->create_guid, buf->dcontext.CreateGuid, 16); |
1740 | ||
1741 | /* SMB2_CREATE_DURABLE_HANDLE_REQUEST is "DH2Q" */ | |
1742 | buf->Name[0] = 'D'; | |
1743 | buf->Name[1] = 'H'; | |
1744 | buf->Name[2] = '2'; | |
1745 | buf->Name[3] = 'Q'; | |
1746 | return buf; | |
1747 | } | |
1748 | ||
1749 | static struct create_durable_handle_reconnect_v2 * | |
1750 | create_reconnect_durable_v2_buf(struct cifs_fid *fid) | |
1751 | { | |
1752 | struct create_durable_handle_reconnect_v2 *buf; | |
1753 | ||
1754 | buf = kzalloc(sizeof(struct create_durable_handle_reconnect_v2), | |
1755 | GFP_KERNEL); | |
1756 | if (!buf) | |
1757 | return NULL; | |
1758 | ||
1759 | buf->ccontext.DataOffset = | |
1760 | cpu_to_le16(offsetof(struct create_durable_handle_reconnect_v2, | |
1761 | dcontext)); | |
1762 | buf->ccontext.DataLength = | |
1763 | cpu_to_le32(sizeof(struct durable_reconnect_context_v2)); | |
1764 | buf->ccontext.NameOffset = | |
1765 | cpu_to_le16(offsetof(struct create_durable_handle_reconnect_v2, | |
1766 | Name)); | |
1767 | buf->ccontext.NameLength = cpu_to_le16(4); | |
1768 | ||
1769 | buf->dcontext.Fid.PersistentFileId = fid->persistent_fid; | |
1770 | buf->dcontext.Fid.VolatileFileId = fid->volatile_fid; | |
1771 | buf->dcontext.Flags = cpu_to_le32(SMB2_DHANDLE_FLAG_PERSISTENT); | |
1772 | memcpy(buf->dcontext.CreateGuid, fid->create_guid, 16); | |
1773 | ||
1774 | /* SMB2_CREATE_DURABLE_HANDLE_RECONNECT_V2 is "DH2C" */ | |
1775 | buf->Name[0] = 'D'; | |
1776 | buf->Name[1] = 'H'; | |
1777 | buf->Name[2] = '2'; | |
1778 | buf->Name[3] = 'C'; | |
1779 | return buf; | |
1780 | } | |
1781 | ||
63eb3def | 1782 | static int |
b56eae4d SF |
1783 | add_durable_v2_context(struct kvec *iov, unsigned int *num_iovec, |
1784 | struct cifs_open_parms *oparms) | |
1785 | { | |
1786 | struct smb2_create_req *req = iov[0].iov_base; | |
1787 | unsigned int num = *num_iovec; | |
1788 | ||
1789 | iov[num].iov_base = create_durable_v2_buf(oparms->fid); | |
1790 | if (iov[num].iov_base == NULL) | |
1791 | return -ENOMEM; | |
1792 | iov[num].iov_len = sizeof(struct create_durable_v2); | |
1793 | if (!req->CreateContextsOffset) | |
1794 | req->CreateContextsOffset = | |
4f33bc35 | 1795 | cpu_to_le32(sizeof(struct smb2_create_req) + |
b56eae4d SF |
1796 | iov[1].iov_len); |
1797 | le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable_v2)); | |
b56eae4d SF |
1798 | *num_iovec = num + 1; |
1799 | return 0; | |
1800 | } | |
1801 | ||
1802 | static int | |
1803 | add_durable_reconnect_v2_context(struct kvec *iov, unsigned int *num_iovec, | |
9cbc0b73 | 1804 | struct cifs_open_parms *oparms) |
63eb3def PS |
1805 | { |
1806 | struct smb2_create_req *req = iov[0].iov_base; | |
1807 | unsigned int num = *num_iovec; | |
1808 | ||
b56eae4d SF |
1809 | /* indicate that we don't need to relock the file */ |
1810 | oparms->reconnect = false; | |
1811 | ||
1812 | iov[num].iov_base = create_reconnect_durable_v2_buf(oparms->fid); | |
1813 | if (iov[num].iov_base == NULL) | |
1814 | return -ENOMEM; | |
1815 | iov[num].iov_len = sizeof(struct create_durable_handle_reconnect_v2); | |
1816 | if (!req->CreateContextsOffset) | |
1817 | req->CreateContextsOffset = | |
4f33bc35 | 1818 | cpu_to_le32(sizeof(struct smb2_create_req) + |
b56eae4d SF |
1819 | iov[1].iov_len); |
1820 | le32_add_cpu(&req->CreateContextsLength, | |
1821 | sizeof(struct create_durable_handle_reconnect_v2)); | |
b56eae4d SF |
1822 | *num_iovec = num + 1; |
1823 | return 0; | |
1824 | } | |
1825 | ||
1826 | static int | |
1827 | add_durable_context(struct kvec *iov, unsigned int *num_iovec, | |
1828 | struct cifs_open_parms *oparms, bool use_persistent) | |
1829 | { | |
1830 | struct smb2_create_req *req = iov[0].iov_base; | |
1831 | unsigned int num = *num_iovec; | |
1832 | ||
1833 | if (use_persistent) { | |
1834 | if (oparms->reconnect) | |
1835 | return add_durable_reconnect_v2_context(iov, num_iovec, | |
1836 | oparms); | |
1837 | else | |
1838 | return add_durable_v2_context(iov, num_iovec, oparms); | |
1839 | } | |
1840 | ||
9cbc0b73 PS |
1841 | if (oparms->reconnect) { |
1842 | iov[num].iov_base = create_reconnect_durable_buf(oparms->fid); | |
1843 | /* indicate that we don't need to relock the file */ | |
1844 | oparms->reconnect = false; | |
1845 | } else | |
1846 | iov[num].iov_base = create_durable_buf(); | |
63eb3def PS |
1847 | if (iov[num].iov_base == NULL) |
1848 | return -ENOMEM; | |
1849 | iov[num].iov_len = sizeof(struct create_durable); | |
1850 | if (!req->CreateContextsOffset) | |
1851 | req->CreateContextsOffset = | |
4f33bc35 | 1852 | cpu_to_le32(sizeof(struct smb2_create_req) + |
63eb3def | 1853 | iov[1].iov_len); |
31f92e9a | 1854 | le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable)); |
63eb3def PS |
1855 | *num_iovec = num + 1; |
1856 | return 0; | |
1857 | } | |
1858 | ||
cdeaf9d0 SF |
1859 | /* See MS-SMB2 2.2.13.2.7 */ |
1860 | static struct crt_twarp_ctxt * | |
1861 | create_twarp_buf(__u64 timewarp) | |
1862 | { | |
1863 | struct crt_twarp_ctxt *buf; | |
1864 | ||
1865 | buf = kzalloc(sizeof(struct crt_twarp_ctxt), GFP_KERNEL); | |
1866 | if (!buf) | |
1867 | return NULL; | |
1868 | ||
1869 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
1870 | (struct crt_twarp_ctxt, Timestamp)); | |
1871 | buf->ccontext.DataLength = cpu_to_le32(8); | |
1872 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
1873 | (struct crt_twarp_ctxt, Name)); | |
1874 | buf->ccontext.NameLength = cpu_to_le16(4); | |
1875 | /* SMB2_CREATE_TIMEWARP_TOKEN is "TWrp" */ | |
1876 | buf->Name[0] = 'T'; | |
1877 | buf->Name[1] = 'W'; | |
1878 | buf->Name[2] = 'r'; | |
1879 | buf->Name[3] = 'p'; | |
1880 | buf->Timestamp = cpu_to_le64(timewarp); | |
1881 | return buf; | |
1882 | } | |
1883 | ||
1884 | /* See MS-SMB2 2.2.13.2.7 */ | |
1885 | static int | |
1886 | add_twarp_context(struct kvec *iov, unsigned int *num_iovec, __u64 timewarp) | |
1887 | { | |
1888 | struct smb2_create_req *req = iov[0].iov_base; | |
1889 | unsigned int num = *num_iovec; | |
1890 | ||
1891 | iov[num].iov_base = create_twarp_buf(timewarp); | |
1892 | if (iov[num].iov_base == NULL) | |
1893 | return -ENOMEM; | |
1894 | iov[num].iov_len = sizeof(struct crt_twarp_ctxt); | |
1895 | if (!req->CreateContextsOffset) | |
1896 | req->CreateContextsOffset = cpu_to_le32( | |
1897 | sizeof(struct smb2_create_req) + | |
1898 | iov[num - 1].iov_len); | |
1899 | le32_add_cpu(&req->CreateContextsLength, sizeof(struct crt_twarp_ctxt)); | |
1900 | *num_iovec = num + 1; | |
1901 | return 0; | |
1902 | } | |
1903 | ||
f0712928 AA |
1904 | static int |
1905 | alloc_path_with_tree_prefix(__le16 **out_path, int *out_size, int *out_len, | |
1906 | const char *treename, const __le16 *path) | |
1907 | { | |
1908 | int treename_len, path_len; | |
1909 | struct nls_table *cp; | |
1910 | const __le16 sep[] = {cpu_to_le16('\\'), cpu_to_le16(0x0000)}; | |
1911 | ||
1912 | /* | |
1913 | * skip leading "\\" | |
1914 | */ | |
1915 | treename_len = strlen(treename); | |
1916 | if (treename_len < 2 || !(treename[0] == '\\' && treename[1] == '\\')) | |
1917 | return -EINVAL; | |
1918 | ||
1919 | treename += 2; | |
1920 | treename_len -= 2; | |
1921 | ||
1922 | path_len = UniStrnlen((wchar_t *)path, PATH_MAX); | |
1923 | ||
1924 | /* | |
1925 | * make room for one path separator between the treename and | |
1926 | * path | |
1927 | */ | |
1928 | *out_len = treename_len + 1 + path_len; | |
1929 | ||
1930 | /* | |
1931 | * final path needs to be null-terminated UTF16 with a | |
1932 | * size aligned to 8 | |
1933 | */ | |
1934 | ||
1935 | *out_size = roundup((*out_len+1)*2, 8); | |
1936 | *out_path = kzalloc(*out_size, GFP_KERNEL); | |
1937 | if (!*out_path) | |
1938 | return -ENOMEM; | |
1939 | ||
1940 | cp = load_nls_default(); | |
1941 | cifs_strtoUTF16(*out_path, treename, treename_len, cp); | |
1942 | UniStrcat(*out_path, sep); | |
1943 | UniStrcat(*out_path, path); | |
1944 | unload_nls(cp); | |
1945 | ||
1946 | return 0; | |
1947 | } | |
1948 | ||
bea851b8 SF |
1949 | int smb311_posix_mkdir(const unsigned int xid, struct inode *inode, |
1950 | umode_t mode, struct cifs_tcon *tcon, | |
1951 | const char *full_path, | |
1952 | struct cifs_sb_info *cifs_sb) | |
1953 | { | |
1954 | struct smb_rqst rqst; | |
1955 | struct smb2_create_req *req; | |
256b4c3f | 1956 | struct smb2_create_rsp *rsp = NULL; |
bea851b8 SF |
1957 | struct TCP_Server_Info *server; |
1958 | struct cifs_ses *ses = tcon->ses; | |
1959 | struct kvec iov[3]; /* make sure at least one for each open context */ | |
1960 | struct kvec rsp_iov = {NULL, 0}; | |
1961 | int resp_buftype; | |
1962 | int uni_path_len; | |
1963 | __le16 *copy_path = NULL; | |
1964 | int copy_size; | |
1965 | int rc = 0; | |
1966 | unsigned int n_iov = 2; | |
1967 | __u32 file_attributes = 0; | |
1968 | char *pc_buf = NULL; | |
1969 | int flags = 0; | |
1970 | unsigned int total_len; | |
256b4c3f | 1971 | __le16 *utf16_path = NULL; |
bea851b8 SF |
1972 | |
1973 | cifs_dbg(FYI, "mkdir\n"); | |
1974 | ||
256b4c3f AA |
1975 | /* resource #1: path allocation */ |
1976 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); | |
1977 | if (!utf16_path) | |
1978 | return -ENOMEM; | |
1979 | ||
bea851b8 SF |
1980 | if (ses && (ses->server)) |
1981 | server = ses->server; | |
256b4c3f AA |
1982 | else { |
1983 | rc = -EIO; | |
1984 | goto err_free_path; | |
1985 | } | |
bea851b8 | 1986 | |
256b4c3f | 1987 | /* resource #2: request */ |
bea851b8 | 1988 | rc = smb2_plain_req_init(SMB2_CREATE, tcon, (void **) &req, &total_len); |
bea851b8 | 1989 | if (rc) |
256b4c3f AA |
1990 | goto err_free_path; |
1991 | ||
bea851b8 SF |
1992 | |
1993 | if (smb3_encryption_required(tcon)) | |
1994 | flags |= CIFS_TRANSFORM_REQ; | |
1995 | ||
bea851b8 SF |
1996 | req->ImpersonationLevel = IL_IMPERSONATION; |
1997 | req->DesiredAccess = cpu_to_le32(FILE_WRITE_ATTRIBUTES); | |
1998 | /* File attributes ignored on open (used in create though) */ | |
1999 | req->FileAttributes = cpu_to_le32(file_attributes); | |
2000 | req->ShareAccess = FILE_SHARE_ALL_LE; | |
2001 | req->CreateDisposition = cpu_to_le32(FILE_CREATE); | |
2002 | req->CreateOptions = cpu_to_le32(CREATE_NOT_FILE); | |
2003 | ||
2004 | iov[0].iov_base = (char *)req; | |
2005 | /* -1 since last byte is buf[0] which is sent below (path) */ | |
2006 | iov[0].iov_len = total_len - 1; | |
2007 | ||
2008 | req->NameOffset = cpu_to_le16(sizeof(struct smb2_create_req)); | |
2009 | ||
2010 | /* [MS-SMB2] 2.2.13 NameOffset: | |
2011 | * If SMB2_FLAGS_DFS_OPERATIONS is set in the Flags field of | |
2012 | * the SMB2 header, the file name includes a prefix that will | |
2013 | * be processed during DFS name normalization as specified in | |
2014 | * section 3.3.5.9. Otherwise, the file name is relative to | |
2015 | * the share that is identified by the TreeId in the SMB2 | |
2016 | * header. | |
2017 | */ | |
2018 | if (tcon->share_flags & SHI1005_FLAGS_DFS) { | |
2019 | int name_len; | |
2020 | ||
2021 | req->sync_hdr.Flags |= SMB2_FLAGS_DFS_OPERATIONS; | |
2022 | rc = alloc_path_with_tree_prefix(©_path, ©_size, | |
2023 | &name_len, | |
256b4c3f AA |
2024 | tcon->treeName, utf16_path); |
2025 | if (rc) | |
2026 | goto err_free_req; | |
2027 | ||
bea851b8 SF |
2028 | req->NameLength = cpu_to_le16(name_len * 2); |
2029 | uni_path_len = copy_size; | |
256b4c3f AA |
2030 | /* free before overwriting resource */ |
2031 | kfree(utf16_path); | |
2032 | utf16_path = copy_path; | |
bea851b8 | 2033 | } else { |
256b4c3f | 2034 | uni_path_len = (2 * UniStrnlen((wchar_t *)utf16_path, PATH_MAX)) + 2; |
bea851b8 SF |
2035 | /* MUST set path len (NameLength) to 0 opening root of share */ |
2036 | req->NameLength = cpu_to_le16(uni_path_len - 2); | |
2037 | if (uni_path_len % 8 != 0) { | |
2038 | copy_size = roundup(uni_path_len, 8); | |
2039 | copy_path = kzalloc(copy_size, GFP_KERNEL); | |
2040 | if (!copy_path) { | |
256b4c3f AA |
2041 | rc = -ENOMEM; |
2042 | goto err_free_req; | |
bea851b8 | 2043 | } |
256b4c3f | 2044 | memcpy((char *)copy_path, (const char *)utf16_path, |
bea851b8 SF |
2045 | uni_path_len); |
2046 | uni_path_len = copy_size; | |
256b4c3f AA |
2047 | /* free before overwriting resource */ |
2048 | kfree(utf16_path); | |
2049 | utf16_path = copy_path; | |
bea851b8 SF |
2050 | } |
2051 | } | |
2052 | ||
2053 | iov[1].iov_len = uni_path_len; | |
256b4c3f | 2054 | iov[1].iov_base = utf16_path; |
bea851b8 SF |
2055 | req->RequestedOplockLevel = SMB2_OPLOCK_LEVEL_NONE; |
2056 | ||
2057 | if (tcon->posix_extensions) { | |
256b4c3f | 2058 | /* resource #3: posix buf */ |
bea851b8 | 2059 | rc = add_posix_context(iov, &n_iov, mode); |
256b4c3f AA |
2060 | if (rc) |
2061 | goto err_free_req; | |
bea851b8 SF |
2062 | pc_buf = iov[n_iov-1].iov_base; |
2063 | } | |
2064 | ||
2065 | ||
2066 | memset(&rqst, 0, sizeof(struct smb_rqst)); | |
2067 | rqst.rq_iov = iov; | |
2068 | rqst.rq_nvec = n_iov; | |
2069 | ||
256b4c3f AA |
2070 | /* resource #4: response buffer */ |
2071 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); | |
2072 | if (rc) { | |
bea851b8 SF |
2073 | cifs_stats_fail_inc(tcon, SMB2_CREATE_HE); |
2074 | trace_smb3_posix_mkdir_err(xid, tcon->tid, ses->Suid, | |
256b4c3f AA |
2075 | CREATE_NOT_FILE, |
2076 | FILE_WRITE_ATTRIBUTES, rc); | |
2077 | goto err_free_rsp_buf; | |
2078 | } | |
2079 | ||
2080 | rsp = (struct smb2_create_rsp *)rsp_iov.iov_base; | |
2081 | trace_smb3_posix_mkdir_done(xid, rsp->PersistentFileId, tcon->tid, | |
2082 | ses->Suid, CREATE_NOT_FILE, | |
2083 | FILE_WRITE_ATTRIBUTES); | |
bea851b8 SF |
2084 | |
2085 | SMB2_close(xid, tcon, rsp->PersistentFileId, rsp->VolatileFileId); | |
2086 | ||
2087 | /* Eventually save off posix specific response info and timestaps */ | |
2088 | ||
256b4c3f | 2089 | err_free_rsp_buf: |
bea851b8 | 2090 | free_rsp_buf(resp_buftype, rsp); |
256b4c3f AA |
2091 | kfree(pc_buf); |
2092 | err_free_req: | |
2093 | cifs_small_buf_release(req); | |
2094 | err_free_path: | |
2095 | kfree(utf16_path); | |
bea851b8 | 2096 | return rc; |
bea851b8 | 2097 | } |
bea851b8 | 2098 | |
2503a0db | 2099 | int |
1eb9fb52 RS |
2100 | SMB2_open_init(struct cifs_tcon *tcon, struct smb_rqst *rqst, __u8 *oplock, |
2101 | struct cifs_open_parms *oparms, __le16 *path) | |
2503a0db | 2102 | { |
1eb9fb52 | 2103 | struct TCP_Server_Info *server = tcon->ses->server; |
2503a0db | 2104 | struct smb2_create_req *req; |
da502f7d | 2105 | unsigned int n_iov = 2; |
ca81983f | 2106 | __u32 file_attributes = 0; |
1eb9fb52 RS |
2107 | int copy_size; |
2108 | int uni_path_len; | |
4f33bc35 | 2109 | unsigned int total_len; |
1eb9fb52 RS |
2110 | struct kvec *iov = rqst->rq_iov; |
2111 | __le16 *copy_path; | |
2112 | int rc; | |
2503a0db | 2113 | |
4f33bc35 | 2114 | rc = smb2_plain_req_init(SMB2_CREATE, tcon, (void **) &req, &total_len); |
2503a0db PS |
2115 | if (rc) |
2116 | return rc; | |
2117 | ||
1eb9fb52 RS |
2118 | iov[0].iov_base = (char *)req; |
2119 | /* -1 since last byte is buf[0] which is sent below (path) */ | |
2120 | iov[0].iov_len = total_len - 1; | |
7fb8986e | 2121 | |
064f6047 | 2122 | if (oparms->create_options & CREATE_OPTION_READONLY) |
ca81983f | 2123 | file_attributes |= ATTR_READONLY; |
db8b631d SF |
2124 | if (oparms->create_options & CREATE_OPTION_SPECIAL) |
2125 | file_attributes |= ATTR_SYSTEM; | |
ca81983f | 2126 | |
2503a0db | 2127 | req->ImpersonationLevel = IL_IMPERSONATION; |
064f6047 | 2128 | req->DesiredAccess = cpu_to_le32(oparms->desired_access); |
2503a0db PS |
2129 | /* File attributes ignored on open (used in create though) */ |
2130 | req->FileAttributes = cpu_to_le32(file_attributes); | |
2131 | req->ShareAccess = FILE_SHARE_ALL_LE; | |
064f6047 PS |
2132 | req->CreateDisposition = cpu_to_le32(oparms->disposition); |
2133 | req->CreateOptions = cpu_to_le32(oparms->create_options & CREATE_OPTIONS_MASK); | |
4f33bc35 | 2134 | req->NameOffset = cpu_to_le16(sizeof(struct smb2_create_req)); |
f0712928 AA |
2135 | |
2136 | /* [MS-SMB2] 2.2.13 NameOffset: | |
2137 | * If SMB2_FLAGS_DFS_OPERATIONS is set in the Flags field of | |
2138 | * the SMB2 header, the file name includes a prefix that will | |
2139 | * be processed during DFS name normalization as specified in | |
2140 | * section 3.3.5.9. Otherwise, the file name is relative to | |
2141 | * the share that is identified by the TreeId in the SMB2 | |
2142 | * header. | |
2143 | */ | |
2144 | if (tcon->share_flags & SHI1005_FLAGS_DFS) { | |
2145 | int name_len; | |
2146 | ||
4f33bc35 | 2147 | req->sync_hdr.Flags |= SMB2_FLAGS_DFS_OPERATIONS; |
f0712928 AA |
2148 | rc = alloc_path_with_tree_prefix(©_path, ©_size, |
2149 | &name_len, | |
2150 | tcon->treeName, path); | |
1eb9fb52 | 2151 | if (rc) |
f0712928 AA |
2152 | return rc; |
2153 | req->NameLength = cpu_to_le16(name_len * 2); | |
59aa3718 PS |
2154 | uni_path_len = copy_size; |
2155 | path = copy_path; | |
f0712928 AA |
2156 | } else { |
2157 | uni_path_len = (2 * UniStrnlen((wchar_t *)path, PATH_MAX)) + 2; | |
2158 | /* MUST set path len (NameLength) to 0 opening root of share */ | |
2159 | req->NameLength = cpu_to_le16(uni_path_len - 2); | |
1eb9fb52 RS |
2160 | copy_size = uni_path_len; |
2161 | if (copy_size % 8 != 0) | |
2162 | copy_size = roundup(copy_size, 8); | |
2163 | copy_path = kzalloc(copy_size, GFP_KERNEL); | |
2164 | if (!copy_path) | |
2165 | return -ENOMEM; | |
2166 | memcpy((char *)copy_path, (const char *)path, | |
2167 | uni_path_len); | |
2168 | uni_path_len = copy_size; | |
2169 | path = copy_path; | |
2503a0db PS |
2170 | } |
2171 | ||
59aa3718 PS |
2172 | iov[1].iov_len = uni_path_len; |
2173 | iov[1].iov_base = path; | |
59aa3718 | 2174 | |
b8c32dbb PS |
2175 | if (!server->oplocks) |
2176 | *oplock = SMB2_OPLOCK_LEVEL_NONE; | |
2177 | ||
a41a28bd | 2178 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LEASING) || |
b8c32dbb PS |
2179 | *oplock == SMB2_OPLOCK_LEVEL_NONE) |
2180 | req->RequestedOplockLevel = *oplock; | |
f8015683 SF |
2181 | else if (!(server->capabilities & SMB2_GLOBAL_CAP_DIRECTORY_LEASING) && |
2182 | (oparms->create_options & CREATE_NOT_FILE)) | |
2183 | req->RequestedOplockLevel = *oplock; /* no srv lease support */ | |
b8c32dbb | 2184 | else { |
729c0c9d SB |
2185 | rc = add_lease_context(server, iov, &n_iov, |
2186 | oparms->fid->lease_key, oplock); | |
1eb9fb52 | 2187 | if (rc) |
d22cbfec | 2188 | return rc; |
b8c32dbb PS |
2189 | } |
2190 | ||
63eb3def PS |
2191 | if (*oplock == SMB2_OPLOCK_LEVEL_BATCH) { |
2192 | /* need to set Next field of lease context if we request it */ | |
a41a28bd | 2193 | if (server->capabilities & SMB2_GLOBAL_CAP_LEASING) { |
63eb3def | 2194 | struct create_context *ccontext = |
da502f7d | 2195 | (struct create_context *)iov[n_iov-1].iov_base; |
1c46943f | 2196 | ccontext->Next = |
a41a28bd | 2197 | cpu_to_le32(server->vals->create_lease_size); |
63eb3def | 2198 | } |
b56eae4d | 2199 | |
da502f7d | 2200 | rc = add_durable_context(iov, &n_iov, oparms, |
b56eae4d | 2201 | tcon->use_persistent); |
1eb9fb52 | 2202 | if (rc) |
63eb3def | 2203 | return rc; |
63eb3def PS |
2204 | } |
2205 | ||
ce558b0e SF |
2206 | if (tcon->posix_extensions) { |
2207 | if (n_iov > 2) { | |
2208 | struct create_context *ccontext = | |
2209 | (struct create_context *)iov[n_iov-1].iov_base; | |
2210 | ccontext->Next = | |
2211 | cpu_to_le32(iov[n_iov-1].iov_len); | |
2212 | } | |
2213 | ||
2214 | rc = add_posix_context(iov, &n_iov, oparms->mode); | |
1eb9fb52 | 2215 | if (rc) |
ce558b0e | 2216 | return rc; |
ce558b0e | 2217 | } |
ce558b0e | 2218 | |
cdeaf9d0 SF |
2219 | if (tcon->snapshot_time) { |
2220 | cifs_dbg(FYI, "adding snapshot context\n"); | |
2221 | if (n_iov > 2) { | |
2222 | struct create_context *ccontext = | |
2223 | (struct create_context *)iov[n_iov-1].iov_base; | |
2224 | ccontext->Next = | |
2225 | cpu_to_le32(iov[n_iov-1].iov_len); | |
2226 | } | |
2227 | ||
2228 | rc = add_twarp_context(iov, &n_iov, tcon->snapshot_time); | |
2229 | if (rc) | |
2230 | return rc; | |
2231 | } | |
2232 | ||
2233 | ||
1eb9fb52 RS |
2234 | rqst->rq_nvec = n_iov; |
2235 | return 0; | |
2236 | } | |
2237 | ||
2238 | /* rq_iov[0] is the request and is released by cifs_small_buf_release(). | |
2239 | * All other vectors are freed by kfree(). | |
2240 | */ | |
2241 | void | |
2242 | SMB2_open_free(struct smb_rqst *rqst) | |
2243 | { | |
2244 | int i; | |
2245 | ||
2246 | cifs_small_buf_release(rqst->rq_iov[0].iov_base); | |
2247 | for (i = 1; i < rqst->rq_nvec; i++) | |
730928c8 RS |
2248 | if (rqst->rq_iov[i].iov_base != smb2_padding) |
2249 | kfree(rqst->rq_iov[i].iov_base); | |
1eb9fb52 RS |
2250 | } |
2251 | ||
2252 | int | |
2253 | SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path, | |
2254 | __u8 *oplock, struct smb2_file_all_info *buf, | |
2255 | struct kvec *err_iov, int *buftype) | |
2256 | { | |
2257 | struct smb_rqst rqst; | |
2258 | struct smb2_create_rsp *rsp = NULL; | |
2259 | struct TCP_Server_Info *server; | |
2260 | struct cifs_tcon *tcon = oparms->tcon; | |
2261 | struct cifs_ses *ses = tcon->ses; | |
4d8dfafc | 2262 | struct kvec iov[SMB2_CREATE_IOV_SIZE]; |
1eb9fb52 RS |
2263 | struct kvec rsp_iov = {NULL, 0}; |
2264 | int resp_buftype; | |
2265 | int rc = 0; | |
2266 | int flags = 0; | |
2267 | ||
2268 | cifs_dbg(FYI, "create/open\n"); | |
2269 | if (ses && (ses->server)) | |
2270 | server = ses->server; | |
2271 | else | |
2272 | return -EIO; | |
2273 | ||
2274 | if (smb3_encryption_required(tcon)) | |
2275 | flags |= CIFS_TRANSFORM_REQ; | |
2276 | ||
40eff45b | 2277 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
1eb9fb52 | 2278 | memset(&iov, 0, sizeof(iov)); |
40eff45b | 2279 | rqst.rq_iov = iov; |
4d8dfafc | 2280 | rqst.rq_nvec = SMB2_CREATE_IOV_SIZE; |
1eb9fb52 RS |
2281 | |
2282 | rc = SMB2_open_init(tcon, &rqst, oplock, oparms, path); | |
2283 | if (rc) | |
2284 | goto creat_exit; | |
40eff45b RS |
2285 | |
2286 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, | |
4f33bc35 | 2287 | &rsp_iov); |
da502f7d | 2288 | rsp = (struct smb2_create_rsp *)rsp_iov.iov_base; |
2503a0db PS |
2289 | |
2290 | if (rc != 0) { | |
2291 | cifs_stats_fail_inc(tcon, SMB2_CREATE_HE); | |
91cb74f5 RS |
2292 | if (err_iov && rsp) { |
2293 | *err_iov = rsp_iov; | |
9d874c36 | 2294 | *buftype = resp_buftype; |
91cb74f5 RS |
2295 | resp_buftype = CIFS_NO_BUFFER; |
2296 | rsp = NULL; | |
2297 | } | |
28d59363 SF |
2298 | trace_smb3_open_err(xid, tcon->tid, ses->Suid, |
2299 | oparms->create_options, oparms->desired_access, rc); | |
2503a0db | 2300 | goto creat_exit; |
28d59363 SF |
2301 | } else |
2302 | trace_smb3_open_done(xid, rsp->PersistentFileId, tcon->tid, | |
2303 | ses->Suid, oparms->create_options, | |
2304 | oparms->desired_access); | |
2503a0db | 2305 | |
064f6047 PS |
2306 | oparms->fid->persistent_fid = rsp->PersistentFileId; |
2307 | oparms->fid->volatile_fid = rsp->VolatileFileId; | |
f0df737e PS |
2308 | |
2309 | if (buf) { | |
2310 | memcpy(buf, &rsp->CreationTime, 32); | |
2311 | buf->AllocationSize = rsp->AllocationSize; | |
2312 | buf->EndOfFile = rsp->EndofFile; | |
2313 | buf->Attributes = rsp->FileAttributes; | |
2314 | buf->NumberOfLinks = cpu_to_le32(1); | |
2315 | buf->DeletePending = 0; | |
2316 | } | |
2e44b288 | 2317 | |
b8c32dbb | 2318 | if (rsp->OplockLevel == SMB2_OPLOCK_LEVEL_LEASE) |
96164ab2 RS |
2319 | *oplock = parse_lease_state(server, rsp, &oparms->fid->epoch, |
2320 | oparms->fid->lease_key); | |
b8c32dbb PS |
2321 | else |
2322 | *oplock = rsp->OplockLevel; | |
2503a0db | 2323 | creat_exit: |
1eb9fb52 | 2324 | SMB2_open_free(&rqst); |
2503a0db PS |
2325 | free_rsp_buf(resp_buftype, rsp); |
2326 | return rc; | |
2327 | } | |
2328 | ||
4a72dafa SF |
2329 | /* |
2330 | * SMB2 IOCTL is used for both IOCTLs and FSCTLs | |
2331 | */ | |
2332 | int | |
2333 | SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, | |
63a83b86 | 2334 | u64 volatile_fid, u32 opcode, bool is_fsctl, |
51146625 AA |
2335 | char *in_data, u32 indatalen, |
2336 | char **out_data, u32 *plen /* returned data len */) | |
4a72dafa | 2337 | { |
40eff45b | 2338 | struct smb_rqst rqst; |
4a72dafa SF |
2339 | struct smb2_ioctl_req *req; |
2340 | struct smb2_ioctl_rsp *rsp; | |
8e353106 | 2341 | struct cifs_ses *ses; |
4a72dafa | 2342 | struct kvec iov[2]; |
da502f7d | 2343 | struct kvec rsp_iov; |
4a72dafa | 2344 | int resp_buftype; |
da502f7d | 2345 | int n_iov; |
4a72dafa | 2346 | int rc = 0; |
7fb8986e | 2347 | int flags = 0; |
97754680 | 2348 | unsigned int total_len; |
4a72dafa SF |
2349 | |
2350 | cifs_dbg(FYI, "SMB2 IOCTL\n"); | |
2351 | ||
3d1a3745 SF |
2352 | if (out_data != NULL) |
2353 | *out_data = NULL; | |
2354 | ||
4a72dafa SF |
2355 | /* zero out returned data len, in case of error */ |
2356 | if (plen) | |
2357 | *plen = 0; | |
2358 | ||
8e353106 SF |
2359 | if (tcon) |
2360 | ses = tcon->ses; | |
2361 | else | |
2362 | return -EIO; | |
2363 | ||
68a6afa7 | 2364 | if (!ses || !(ses->server)) |
4a72dafa SF |
2365 | return -EIO; |
2366 | ||
97754680 | 2367 | rc = smb2_plain_req_init(SMB2_IOCTL, tcon, (void **) &req, &total_len); |
4a72dafa SF |
2368 | if (rc) |
2369 | return rc; | |
2370 | ||
5a77e75f | 2371 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
2372 | flags |= CIFS_TRANSFORM_REQ; |
2373 | ||
4a72dafa SF |
2374 | req->CtlCode = cpu_to_le32(opcode); |
2375 | req->PersistentFileId = persistent_fid; | |
2376 | req->VolatileFileId = volatile_fid; | |
2377 | ||
2378 | if (indatalen) { | |
2379 | req->InputCount = cpu_to_le32(indatalen); | |
2380 | /* do not set InputOffset if no input data */ | |
2381 | req->InputOffset = | |
97754680 | 2382 | cpu_to_le32(offsetof(struct smb2_ioctl_req, Buffer)); |
4a72dafa SF |
2383 | iov[1].iov_base = in_data; |
2384 | iov[1].iov_len = indatalen; | |
da502f7d | 2385 | n_iov = 2; |
4a72dafa | 2386 | } else |
da502f7d | 2387 | n_iov = 1; |
4a72dafa SF |
2388 | |
2389 | req->OutputOffset = 0; | |
2390 | req->OutputCount = 0; /* MBZ */ | |
2391 | ||
2392 | /* | |
2393 | * Could increase MaxOutputResponse, but that would require more | |
2394 | * than one credit. Windows typically sets this smaller, but for some | |
2395 | * ioctls it may be useful to allow server to send more. No point | |
2396 | * limiting what the server can send as long as fits in one credit | |
7db0a6ef SF |
2397 | * Unfortunately - we can not handle more than CIFS_MAX_MSG_SIZE |
2398 | * (by default, note that it can be overridden to make max larger) | |
2399 | * in responses (except for read responses which can be bigger. | |
2400 | * We may want to bump this limit up | |
4a72dafa | 2401 | */ |
7db0a6ef | 2402 | req->MaxOutputResponse = cpu_to_le32(CIFSMaxBufSize); |
4a72dafa SF |
2403 | |
2404 | if (is_fsctl) | |
2405 | req->Flags = cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL); | |
2406 | else | |
2407 | req->Flags = 0; | |
2408 | ||
2409 | iov[0].iov_base = (char *)req; | |
4a72dafa | 2410 | |
7ff8d45c SF |
2411 | /* |
2412 | * If no input data, the size of ioctl struct in | |
2413 | * protocol spec still includes a 1 byte data buffer, | |
2414 | * but if input data passed to ioctl, we do not | |
2415 | * want to double count this, so we do not send | |
2416 | * the dummy one byte of data in iovec[0] if sending | |
97754680 | 2417 | * input data (in iovec[1]). |
7ff8d45c SF |
2418 | */ |
2419 | ||
2420 | if (indatalen) { | |
97754680 | 2421 | iov[0].iov_len = total_len - 1; |
7ff8d45c | 2422 | } else |
97754680 | 2423 | iov[0].iov_len = total_len; |
7ff8d45c | 2424 | |
4587eee0 SF |
2425 | /* validate negotiate request must be signed - see MS-SMB2 3.2.5.5 */ |
2426 | if (opcode == FSCTL_VALIDATE_NEGOTIATE_INFO) | |
97754680 | 2427 | req->sync_hdr.Flags |= SMB2_FLAGS_SIGNED; |
4a72dafa | 2428 | |
40eff45b RS |
2429 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
2430 | rqst.rq_iov = iov; | |
2431 | rqst.rq_nvec = n_iov; | |
2432 | ||
2433 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, | |
97754680 | 2434 | &rsp_iov); |
da502f7d PS |
2435 | cifs_small_buf_release(req); |
2436 | rsp = (struct smb2_ioctl_rsp *)rsp_iov.iov_base; | |
4a72dafa | 2437 | |
eccb4422 SF |
2438 | if (rc != 0) |
2439 | trace_smb3_fsctl_err(xid, persistent_fid, tcon->tid, | |
2440 | ses->Suid, 0, opcode, rc); | |
2441 | ||
9bf0c9cd | 2442 | if ((rc != 0) && (rc != -EINVAL)) { |
8e353106 | 2443 | cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE); |
4a72dafa | 2444 | goto ioctl_exit; |
9bf0c9cd SF |
2445 | } else if (rc == -EINVAL) { |
2446 | if ((opcode != FSCTL_SRV_COPYCHUNK_WRITE) && | |
2447 | (opcode != FSCTL_SRV_COPYCHUNK)) { | |
8e353106 | 2448 | cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE); |
9bf0c9cd SF |
2449 | goto ioctl_exit; |
2450 | } | |
4a72dafa SF |
2451 | } |
2452 | ||
2453 | /* check if caller wants to look at return data or just return rc */ | |
2454 | if ((plen == NULL) || (out_data == NULL)) | |
2455 | goto ioctl_exit; | |
2456 | ||
2457 | *plen = le32_to_cpu(rsp->OutputCount); | |
2458 | ||
2459 | /* We check for obvious errors in the output buffer length and offset */ | |
2460 | if (*plen == 0) | |
2461 | goto ioctl_exit; /* server returned no data */ | |
2462 | else if (*plen > 0xFF00) { | |
2463 | cifs_dbg(VFS, "srv returned invalid ioctl length: %d\n", *plen); | |
2464 | *plen = 0; | |
2465 | rc = -EIO; | |
2466 | goto ioctl_exit; | |
2467 | } | |
2468 | ||
977b6170 | 2469 | if (rsp_iov.iov_len < le32_to_cpu(rsp->OutputOffset) + *plen) { |
4a72dafa SF |
2470 | cifs_dbg(VFS, "Malformed ioctl resp: len %d offset %d\n", *plen, |
2471 | le32_to_cpu(rsp->OutputOffset)); | |
2472 | *plen = 0; | |
2473 | rc = -EIO; | |
2474 | goto ioctl_exit; | |
2475 | } | |
2476 | ||
2477 | *out_data = kmalloc(*plen, GFP_KERNEL); | |
2478 | if (*out_data == NULL) { | |
2479 | rc = -ENOMEM; | |
2480 | goto ioctl_exit; | |
2481 | } | |
2482 | ||
977b6170 | 2483 | memcpy(*out_data, (char *)rsp + le32_to_cpu(rsp->OutputOffset), *plen); |
4a72dafa SF |
2484 | ioctl_exit: |
2485 | free_rsp_buf(resp_buftype, rsp); | |
2486 | return rc; | |
2487 | } | |
2488 | ||
64a5cfa6 SF |
2489 | /* |
2490 | * Individual callers to ioctl worker function follow | |
2491 | */ | |
2492 | ||
2493 | int | |
2494 | SMB2_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
2495 | u64 persistent_fid, u64 volatile_fid) | |
2496 | { | |
2497 | int rc; | |
64a5cfa6 SF |
2498 | struct compress_ioctl fsctl_input; |
2499 | char *ret_data = NULL; | |
2500 | ||
2501 | fsctl_input.CompressionState = | |
bc09d141 | 2502 | cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); |
64a5cfa6 SF |
2503 | |
2504 | rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid, | |
2505 | FSCTL_SET_COMPRESSION, true /* is_fsctl */, | |
2506 | (char *)&fsctl_input /* data input */, | |
2507 | 2 /* in data len */, &ret_data /* out data */, NULL); | |
2508 | ||
2509 | cifs_dbg(FYI, "set compression rc %d\n", rc); | |
64a5cfa6 SF |
2510 | |
2511 | return rc; | |
2512 | } | |
2513 | ||
8eb4ecfa RS |
2514 | int |
2515 | SMB2_close_init(struct cifs_tcon *tcon, struct smb_rqst *rqst, | |
2516 | u64 persistent_fid, u64 volatile_fid) | |
2517 | { | |
2518 | struct smb2_close_req *req; | |
2519 | struct kvec *iov = rqst->rq_iov; | |
2520 | unsigned int total_len; | |
2521 | int rc; | |
2522 | ||
2523 | rc = smb2_plain_req_init(SMB2_CLOSE, tcon, (void **) &req, &total_len); | |
2524 | if (rc) | |
2525 | return rc; | |
2526 | ||
2527 | req->PersistentFileId = persistent_fid; | |
2528 | req->VolatileFileId = volatile_fid; | |
2529 | iov[0].iov_base = (char *)req; | |
2530 | iov[0].iov_len = total_len; | |
2531 | ||
2532 | return 0; | |
2533 | } | |
2534 | ||
2535 | void | |
2536 | SMB2_close_free(struct smb_rqst *rqst) | |
2537 | { | |
2538 | cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */ | |
2539 | } | |
2540 | ||
2503a0db | 2541 | int |
97ca1762 RS |
2542 | SMB2_close_flags(const unsigned int xid, struct cifs_tcon *tcon, |
2543 | u64 persistent_fid, u64 volatile_fid, int flags) | |
2503a0db | 2544 | { |
40eff45b | 2545 | struct smb_rqst rqst; |
8eb4ecfa | 2546 | struct smb2_close_rsp *rsp = NULL; |
2503a0db PS |
2547 | struct cifs_ses *ses = tcon->ses; |
2548 | struct kvec iov[1]; | |
da502f7d | 2549 | struct kvec rsp_iov; |
2503a0db PS |
2550 | int resp_buftype; |
2551 | int rc = 0; | |
2552 | ||
f96637be | 2553 | cifs_dbg(FYI, "Close\n"); |
2503a0db | 2554 | |
68a6afa7 | 2555 | if (!ses || !(ses->server)) |
2503a0db PS |
2556 | return -EIO; |
2557 | ||
5a77e75f | 2558 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
2559 | flags |= CIFS_TRANSFORM_REQ; |
2560 | ||
40eff45b | 2561 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
8eb4ecfa | 2562 | memset(&iov, 0, sizeof(iov)); |
40eff45b RS |
2563 | rqst.rq_iov = iov; |
2564 | rqst.rq_nvec = 1; | |
2565 | ||
8eb4ecfa RS |
2566 | rc = SMB2_close_init(tcon, &rqst, persistent_fid, volatile_fid); |
2567 | if (rc) | |
2568 | goto close_exit; | |
2569 | ||
40eff45b | 2570 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); |
da502f7d | 2571 | rsp = (struct smb2_close_rsp *)rsp_iov.iov_base; |
2503a0db PS |
2572 | |
2573 | if (rc != 0) { | |
d4a029d2 | 2574 | cifs_stats_fail_inc(tcon, SMB2_CLOSE_HE); |
eccb4422 SF |
2575 | trace_smb3_close_err(xid, persistent_fid, tcon->tid, ses->Suid, |
2576 | rc); | |
2503a0db PS |
2577 | goto close_exit; |
2578 | } | |
2579 | ||
2503a0db PS |
2580 | /* BB FIXME - decode close response, update inode for caching */ |
2581 | ||
2582 | close_exit: | |
8eb4ecfa | 2583 | SMB2_close_free(&rqst); |
2503a0db PS |
2584 | free_rsp_buf(resp_buftype, rsp); |
2585 | return rc; | |
2586 | } | |
be4cb9e3 | 2587 | |
97ca1762 RS |
2588 | int |
2589 | SMB2_close(const unsigned int xid, struct cifs_tcon *tcon, | |
2590 | u64 persistent_fid, u64 volatile_fid) | |
2591 | { | |
2592 | return SMB2_close_flags(xid, tcon, persistent_fid, volatile_fid, 0); | |
2593 | } | |
2594 | ||
730928c8 RS |
2595 | int |
2596 | smb2_validate_iov(unsigned int offset, unsigned int buffer_length, | |
2597 | struct kvec *iov, unsigned int min_buf_size) | |
be4cb9e3 | 2598 | { |
c1596ff5 | 2599 | unsigned int smb_len = iov->iov_len; |
1fc6ad2f RS |
2600 | char *end_of_smb = smb_len + (char *)iov->iov_base; |
2601 | char *begin_of_buf = offset + (char *)iov->iov_base; | |
be4cb9e3 PS |
2602 | char *end_of_buf = begin_of_buf + buffer_length; |
2603 | ||
2604 | ||
2605 | if (buffer_length < min_buf_size) { | |
f96637be JP |
2606 | cifs_dbg(VFS, "buffer length %d smaller than minimum size %d\n", |
2607 | buffer_length, min_buf_size); | |
be4cb9e3 PS |
2608 | return -EINVAL; |
2609 | } | |
2610 | ||
2611 | /* check if beyond RFC1001 maximum length */ | |
2612 | if ((smb_len > 0x7FFFFF) || (buffer_length > 0x7FFFFF)) { | |
f96637be JP |
2613 | cifs_dbg(VFS, "buffer length %d or smb length %d too large\n", |
2614 | buffer_length, smb_len); | |
be4cb9e3 PS |
2615 | return -EINVAL; |
2616 | } | |
2617 | ||
2618 | if ((begin_of_buf > end_of_smb) || (end_of_buf > end_of_smb)) { | |
f96637be | 2619 | cifs_dbg(VFS, "illegal server response, bad offset to data\n"); |
be4cb9e3 PS |
2620 | return -EINVAL; |
2621 | } | |
2622 | ||
2623 | return 0; | |
2624 | } | |
2625 | ||
2626 | /* | |
2627 | * If SMB buffer fields are valid, copy into temporary buffer to hold result. | |
2628 | * Caller must free buffer. | |
2629 | */ | |
2630 | static int | |
1fc6ad2f | 2631 | validate_and_copy_iov(unsigned int offset, unsigned int buffer_length, |
c1596ff5 | 2632 | struct kvec *iov, unsigned int minbufsize, |
be4cb9e3 | 2633 | char *data) |
be4cb9e3 | 2634 | { |
1fc6ad2f | 2635 | char *begin_of_buf = offset + (char *)iov->iov_base; |
be4cb9e3 PS |
2636 | int rc; |
2637 | ||
2638 | if (!data) | |
2639 | return -EINVAL; | |
2640 | ||
730928c8 | 2641 | rc = smb2_validate_iov(offset, buffer_length, iov, minbufsize); |
be4cb9e3 PS |
2642 | if (rc) |
2643 | return rc; | |
2644 | ||
2645 | memcpy(data, begin_of_buf, buffer_length); | |
2646 | ||
2647 | return 0; | |
2648 | } | |
2649 | ||
296ecbae RS |
2650 | int |
2651 | SMB2_query_info_init(struct cifs_tcon *tcon, struct smb_rqst *rqst, | |
2652 | u64 persistent_fid, u64 volatile_fid, | |
2653 | u8 info_class, u8 info_type, u32 additional_info, | |
2654 | size_t output_len) | |
be4cb9e3 PS |
2655 | { |
2656 | struct smb2_query_info_req *req; | |
296ecbae | 2657 | struct kvec *iov = rqst->rq_iov; |
b2fb7fec | 2658 | unsigned int total_len; |
296ecbae | 2659 | int rc; |
be4cb9e3 | 2660 | |
b2fb7fec RS |
2661 | rc = smb2_plain_req_init(SMB2_QUERY_INFO, tcon, (void **) &req, |
2662 | &total_len); | |
be4cb9e3 PS |
2663 | if (rc) |
2664 | return rc; | |
2665 | ||
42c493c1 | 2666 | req->InfoType = info_type; |
f0df737e | 2667 | req->FileInfoClass = info_class; |
be4cb9e3 PS |
2668 | req->PersistentFileId = persistent_fid; |
2669 | req->VolatileFileId = volatile_fid; | |
42c493c1 | 2670 | req->AdditionalInformation = cpu_to_le32(additional_info); |
48923d2a AA |
2671 | |
2672 | /* | |
2673 | * We do not use the input buffer (do not send extra byte) | |
2674 | */ | |
2675 | req->InputBufferOffset = 0; | |
48923d2a | 2676 | |
f0df737e | 2677 | req->OutputBufferLength = cpu_to_le32(output_len); |
be4cb9e3 PS |
2678 | |
2679 | iov[0].iov_base = (char *)req; | |
b2fb7fec RS |
2680 | /* 1 for Buffer */ |
2681 | iov[0].iov_len = total_len - 1; | |
296ecbae RS |
2682 | return 0; |
2683 | } | |
2684 | ||
2685 | void | |
2686 | SMB2_query_info_free(struct smb_rqst *rqst) | |
2687 | { | |
2688 | cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */ | |
2689 | } | |
2690 | ||
2691 | static int | |
2692 | query_info(const unsigned int xid, struct cifs_tcon *tcon, | |
2693 | u64 persistent_fid, u64 volatile_fid, u8 info_class, u8 info_type, | |
2694 | u32 additional_info, size_t output_len, size_t min_len, void **data, | |
2695 | u32 *dlen) | |
2696 | { | |
2697 | struct smb_rqst rqst; | |
2698 | struct smb2_query_info_rsp *rsp = NULL; | |
2699 | struct kvec iov[1]; | |
2700 | struct kvec rsp_iov; | |
2701 | int rc = 0; | |
2702 | int resp_buftype; | |
2703 | struct cifs_ses *ses = tcon->ses; | |
2704 | int flags = 0; | |
2705 | ||
2706 | cifs_dbg(FYI, "Query Info\n"); | |
2707 | ||
2708 | if (!ses || !(ses->server)) | |
2709 | return -EIO; | |
2710 | ||
2711 | if (smb3_encryption_required(tcon)) | |
2712 | flags |= CIFS_TRANSFORM_REQ; | |
be4cb9e3 | 2713 | |
40eff45b | 2714 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
296ecbae | 2715 | memset(&iov, 0, sizeof(iov)); |
40eff45b RS |
2716 | rqst.rq_iov = iov; |
2717 | rqst.rq_nvec = 1; | |
2718 | ||
296ecbae RS |
2719 | rc = SMB2_query_info_init(tcon, &rqst, persistent_fid, volatile_fid, |
2720 | info_class, info_type, additional_info, | |
2721 | output_len); | |
2722 | if (rc) | |
2723 | goto qinf_exit; | |
2724 | ||
40eff45b | 2725 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); |
da502f7d | 2726 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; |
e5d04887 | 2727 | |
be4cb9e3 PS |
2728 | if (rc) { |
2729 | cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); | |
eccb4422 SF |
2730 | trace_smb3_query_info_err(xid, persistent_fid, tcon->tid, |
2731 | ses->Suid, info_class, (__u32)info_type, rc); | |
be4cb9e3 PS |
2732 | goto qinf_exit; |
2733 | } | |
2734 | ||
42c493c1 SP |
2735 | if (dlen) { |
2736 | *dlen = le32_to_cpu(rsp->OutputBufferLength); | |
2737 | if (!*data) { | |
2738 | *data = kmalloc(*dlen, GFP_KERNEL); | |
2739 | if (!*data) { | |
2740 | cifs_dbg(VFS, | |
2741 | "Error %d allocating memory for acl\n", | |
2742 | rc); | |
2743 | *dlen = 0; | |
2744 | goto qinf_exit; | |
2745 | } | |
2746 | } | |
2747 | } | |
2748 | ||
1fc6ad2f | 2749 | rc = validate_and_copy_iov(le16_to_cpu(rsp->OutputBufferOffset), |
be4cb9e3 | 2750 | le32_to_cpu(rsp->OutputBufferLength), |
c1596ff5 | 2751 | &rsp_iov, min_len, *data); |
be4cb9e3 PS |
2752 | |
2753 | qinf_exit: | |
296ecbae | 2754 | SMB2_query_info_free(&rqst); |
be4cb9e3 PS |
2755 | free_rsp_buf(resp_buftype, rsp); |
2756 | return rc; | |
2757 | } | |
9094fad1 | 2758 | |
95907fea | 2759 | int SMB2_query_eas(const unsigned int xid, struct cifs_tcon *tcon, |
7cb3def4 RS |
2760 | u64 persistent_fid, u64 volatile_fid, |
2761 | int ea_buf_size, struct smb2_file_full_ea_info *data) | |
95907fea RS |
2762 | { |
2763 | return query_info(xid, tcon, persistent_fid, volatile_fid, | |
2764 | FILE_FULL_EA_INFORMATION, SMB2_O_INFO_FILE, 0, | |
7cb3def4 | 2765 | ea_buf_size, |
95907fea RS |
2766 | sizeof(struct smb2_file_full_ea_info), |
2767 | (void **)&data, | |
2768 | NULL); | |
2769 | } | |
2770 | ||
42c493c1 SP |
2771 | int SMB2_query_info(const unsigned int xid, struct cifs_tcon *tcon, |
2772 | u64 persistent_fid, u64 volatile_fid, struct smb2_file_all_info *data) | |
2773 | { | |
2774 | return query_info(xid, tcon, persistent_fid, volatile_fid, | |
2775 | FILE_ALL_INFORMATION, SMB2_O_INFO_FILE, 0, | |
2776 | sizeof(struct smb2_file_all_info) + PATH_MAX * 2, | |
2777 | sizeof(struct smb2_file_all_info), (void **)&data, | |
2778 | NULL); | |
2779 | } | |
2780 | ||
f0df737e | 2781 | int |
42c493c1 | 2782 | SMB2_query_acl(const unsigned int xid, struct cifs_tcon *tcon, |
f0df737e | 2783 | u64 persistent_fid, u64 volatile_fid, |
42c493c1 | 2784 | void **data, u32 *plen) |
f0df737e | 2785 | { |
42c493c1 SP |
2786 | __u32 additional_info = OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO; |
2787 | *plen = 0; | |
2788 | ||
f0df737e | 2789 | return query_info(xid, tcon, persistent_fid, volatile_fid, |
42c493c1 | 2790 | 0, SMB2_O_INFO_SECURITY, additional_info, |
ee25c6dd | 2791 | SMB2_MAX_BUFFER_SIZE, MIN_SEC_DESC_LEN, data, plen); |
f0df737e PS |
2792 | } |
2793 | ||
2794 | int | |
2795 | SMB2_get_srv_num(const unsigned int xid, struct cifs_tcon *tcon, | |
2796 | u64 persistent_fid, u64 volatile_fid, __le64 *uniqueid) | |
2797 | { | |
2798 | return query_info(xid, tcon, persistent_fid, volatile_fid, | |
42c493c1 SP |
2799 | FILE_INTERNAL_INFORMATION, SMB2_O_INFO_FILE, 0, |
2800 | sizeof(struct smb2_file_internal_info), | |
f0df737e | 2801 | sizeof(struct smb2_file_internal_info), |
42c493c1 | 2802 | (void **)&uniqueid, NULL); |
f0df737e PS |
2803 | } |
2804 | ||
9094fad1 PS |
2805 | /* |
2806 | * This is a no-op for now. We're not really interested in the reply, but | |
2807 | * rather in the fact that the server sent one and that server->lstrp | |
2808 | * gets updated. | |
2809 | * | |
2810 | * FIXME: maybe we should consider checking that the reply matches request? | |
2811 | */ | |
2812 | static void | |
2813 | smb2_echo_callback(struct mid_q_entry *mid) | |
2814 | { | |
2815 | struct TCP_Server_Info *server = mid->callback_data; | |
31473fc4 | 2816 | struct smb2_echo_rsp *rsp = (struct smb2_echo_rsp *)mid->resp_buf; |
9094fad1 PS |
2817 | unsigned int credits_received = 1; |
2818 | ||
2819 | if (mid->mid_state == MID_RESPONSE_RECEIVED) | |
49f466bd | 2820 | credits_received = le16_to_cpu(rsp->sync_hdr.CreditRequest); |
9094fad1 PS |
2821 | |
2822 | DeleteMidQEntry(mid); | |
2823 | add_credits(server, credits_received, CIFS_ECHO_OP); | |
2824 | } | |
2825 | ||
53e0e11e PS |
2826 | void smb2_reconnect_server(struct work_struct *work) |
2827 | { | |
2828 | struct TCP_Server_Info *server = container_of(work, | |
2829 | struct TCP_Server_Info, reconnect.work); | |
2830 | struct cifs_ses *ses; | |
2831 | struct cifs_tcon *tcon, *tcon2; | |
2832 | struct list_head tmp_list; | |
2833 | int tcon_exist = false; | |
18ea4311 GP |
2834 | int rc; |
2835 | int resched = false; | |
2836 | ||
53e0e11e PS |
2837 | |
2838 | /* Prevent simultaneous reconnects that can corrupt tcon->rlist list */ | |
2839 | mutex_lock(&server->reconnect_mutex); | |
2840 | ||
2841 | INIT_LIST_HEAD(&tmp_list); | |
2842 | cifs_dbg(FYI, "Need negotiate, reconnecting tcons\n"); | |
2843 | ||
2844 | spin_lock(&cifs_tcp_ses_lock); | |
2845 | list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { | |
2846 | list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { | |
96a988ff | 2847 | if (tcon->need_reconnect || tcon->need_reopen_files) { |
53e0e11e PS |
2848 | tcon->tc_count++; |
2849 | list_add_tail(&tcon->rlist, &tmp_list); | |
2850 | tcon_exist = true; | |
2851 | } | |
2852 | } | |
b327a717 AA |
2853 | if (ses->tcon_ipc && ses->tcon_ipc->need_reconnect) { |
2854 | list_add_tail(&ses->tcon_ipc->rlist, &tmp_list); | |
2855 | tcon_exist = true; | |
2856 | } | |
53e0e11e PS |
2857 | } |
2858 | /* | |
2859 | * Get the reference to server struct to be sure that the last call of | |
2860 | * cifs_put_tcon() in the loop below won't release the server pointer. | |
2861 | */ | |
2862 | if (tcon_exist) | |
2863 | server->srv_count++; | |
2864 | ||
2865 | spin_unlock(&cifs_tcp_ses_lock); | |
2866 | ||
2867 | list_for_each_entry_safe(tcon, tcon2, &tmp_list, rlist) { | |
18ea4311 GP |
2868 | rc = smb2_reconnect(SMB2_INTERNAL_CMD, tcon); |
2869 | if (!rc) | |
96a988ff | 2870 | cifs_reopen_persistent_handles(tcon); |
18ea4311 GP |
2871 | else |
2872 | resched = true; | |
53e0e11e PS |
2873 | list_del_init(&tcon->rlist); |
2874 | cifs_put_tcon(tcon); | |
2875 | } | |
2876 | ||
2877 | cifs_dbg(FYI, "Reconnecting tcons finished\n"); | |
18ea4311 GP |
2878 | if (resched) |
2879 | queue_delayed_work(cifsiod_wq, &server->reconnect, 2 * HZ); | |
53e0e11e PS |
2880 | mutex_unlock(&server->reconnect_mutex); |
2881 | ||
2882 | /* now we can safely release srv struct */ | |
2883 | if (tcon_exist) | |
2884 | cifs_put_tcp_session(server, 1); | |
2885 | } | |
2886 | ||
9094fad1 PS |
2887 | int |
2888 | SMB2_echo(struct TCP_Server_Info *server) | |
2889 | { | |
2890 | struct smb2_echo_req *req; | |
2891 | int rc = 0; | |
c713c877 | 2892 | struct kvec iov[1]; |
738f9de5 | 2893 | struct smb_rqst rqst = { .rq_iov = iov, |
c713c877 | 2894 | .rq_nvec = 1 }; |
7f7ae759 | 2895 | unsigned int total_len; |
9094fad1 | 2896 | |
f96637be | 2897 | cifs_dbg(FYI, "In echo request\n"); |
9094fad1 | 2898 | |
4fcd1813 | 2899 | if (server->tcpStatus == CifsNeedNegotiate) { |
53e0e11e PS |
2900 | /* No need to send echo on newly established connections */ |
2901 | queue_delayed_work(cifsiod_wq, &server->reconnect, 0); | |
2902 | return rc; | |
4fcd1813 SF |
2903 | } |
2904 | ||
7f7ae759 | 2905 | rc = smb2_plain_req_init(SMB2_ECHO, NULL, (void **)&req, &total_len); |
9094fad1 PS |
2906 | if (rc) |
2907 | return rc; | |
2908 | ||
7f7ae759 | 2909 | req->sync_hdr.CreditRequest = cpu_to_le16(1); |
9094fad1 | 2910 | |
c713c877 RS |
2911 | iov[0].iov_len = total_len; |
2912 | iov[0].iov_base = (char *)req; | |
9094fad1 | 2913 | |
9b7c18a2 PS |
2914 | rc = cifs_call_async(server, &rqst, NULL, smb2_echo_callback, NULL, |
2915 | server, CIFS_ECHO_OP); | |
9094fad1 | 2916 | if (rc) |
f96637be | 2917 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
9094fad1 PS |
2918 | |
2919 | cifs_small_buf_release(req); | |
2920 | return rc; | |
2921 | } | |
7a5cfb19 PS |
2922 | |
2923 | int | |
2924 | SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, | |
2925 | u64 volatile_fid) | |
2926 | { | |
40eff45b | 2927 | struct smb_rqst rqst; |
7a5cfb19 | 2928 | struct smb2_flush_req *req; |
7a5cfb19 PS |
2929 | struct cifs_ses *ses = tcon->ses; |
2930 | struct kvec iov[1]; | |
da502f7d | 2931 | struct kvec rsp_iov; |
7a5cfb19 PS |
2932 | int resp_buftype; |
2933 | int rc = 0; | |
7fb8986e | 2934 | int flags = 0; |
1f444e4c | 2935 | unsigned int total_len; |
7a5cfb19 | 2936 | |
f96637be | 2937 | cifs_dbg(FYI, "Flush\n"); |
7a5cfb19 | 2938 | |
68a6afa7 | 2939 | if (!ses || !(ses->server)) |
7a5cfb19 PS |
2940 | return -EIO; |
2941 | ||
1f444e4c | 2942 | rc = smb2_plain_req_init(SMB2_FLUSH, tcon, (void **) &req, &total_len); |
7a5cfb19 PS |
2943 | if (rc) |
2944 | return rc; | |
2945 | ||
5a77e75f | 2946 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
2947 | flags |= CIFS_TRANSFORM_REQ; |
2948 | ||
7a5cfb19 PS |
2949 | req->PersistentFileId = persistent_fid; |
2950 | req->VolatileFileId = volatile_fid; | |
2951 | ||
2952 | iov[0].iov_base = (char *)req; | |
1f444e4c | 2953 | iov[0].iov_len = total_len; |
7a5cfb19 | 2954 | |
40eff45b RS |
2955 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
2956 | rqst.rq_iov = iov; | |
2957 | rqst.rq_nvec = 1; | |
2958 | ||
2959 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d | 2960 | cifs_small_buf_release(req); |
7a5cfb19 | 2961 | |
eccb4422 | 2962 | if (rc != 0) { |
7a5cfb19 | 2963 | cifs_stats_fail_inc(tcon, SMB2_FLUSH_HE); |
eccb4422 SF |
2964 | trace_smb3_flush_err(xid, persistent_fid, tcon->tid, ses->Suid, |
2965 | rc); | |
2966 | } | |
7a5cfb19 | 2967 | |
da502f7d | 2968 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); |
7a5cfb19 PS |
2969 | return rc; |
2970 | } | |
09a4707e PS |
2971 | |
2972 | /* | |
2973 | * To form a chain of read requests, any read requests after the first should | |
2974 | * have the end_of_chain boolean set to true. | |
2975 | */ | |
2976 | static int | |
738f9de5 | 2977 | smb2_new_read_req(void **buf, unsigned int *total_len, |
2dabfd5b LL |
2978 | struct cifs_io_parms *io_parms, struct cifs_readdata *rdata, |
2979 | unsigned int remaining_bytes, int request_type) | |
09a4707e PS |
2980 | { |
2981 | int rc = -EACCES; | |
b8f57ee8 | 2982 | struct smb2_read_plain_req *req = NULL; |
31473fc4 | 2983 | struct smb2_sync_hdr *shdr; |
2dabfd5b | 2984 | struct TCP_Server_Info *server; |
09a4707e | 2985 | |
b8f57ee8 PS |
2986 | rc = smb2_plain_req_init(SMB2_READ, io_parms->tcon, (void **) &req, |
2987 | total_len); | |
09a4707e PS |
2988 | if (rc) |
2989 | return rc; | |
2dabfd5b LL |
2990 | |
2991 | server = io_parms->tcon->ses->server; | |
2992 | if (server == NULL) | |
09a4707e PS |
2993 | return -ECONNABORTED; |
2994 | ||
b8f57ee8 | 2995 | shdr = &req->sync_hdr; |
31473fc4 | 2996 | shdr->ProcessId = cpu_to_le32(io_parms->pid); |
09a4707e PS |
2997 | |
2998 | req->PersistentFileId = io_parms->persistent_fid; | |
2999 | req->VolatileFileId = io_parms->volatile_fid; | |
3000 | req->ReadChannelInfoOffset = 0; /* reserved */ | |
3001 | req->ReadChannelInfoLength = 0; /* reserved */ | |
3002 | req->Channel = 0; /* reserved */ | |
3003 | req->MinimumCount = 0; | |
3004 | req->Length = cpu_to_le32(io_parms->length); | |
3005 | req->Offset = cpu_to_le64(io_parms->offset); | |
bd3dcc6a LL |
3006 | #ifdef CONFIG_CIFS_SMB_DIRECT |
3007 | /* | |
3008 | * If we want to do a RDMA write, fill in and append | |
3009 | * smbd_buffer_descriptor_v1 to the end of read request | |
3010 | */ | |
bb4c0419 | 3011 | if (server->rdma && rdata && !server->sign && |
bd3dcc6a LL |
3012 | rdata->bytes >= server->smbd_conn->rdma_readwrite_threshold) { |
3013 | ||
3014 | struct smbd_buffer_descriptor_v1 *v1; | |
3015 | bool need_invalidate = | |
3016 | io_parms->tcon->ses->server->dialect == SMB30_PROT_ID; | |
3017 | ||
3018 | rdata->mr = smbd_register_mr( | |
3019 | server->smbd_conn, rdata->pages, | |
7cf20bce LL |
3020 | rdata->nr_pages, rdata->page_offset, |
3021 | rdata->tailsz, true, need_invalidate); | |
bd3dcc6a LL |
3022 | if (!rdata->mr) |
3023 | return -ENOBUFS; | |
3024 | ||
3025 | req->Channel = SMB2_CHANNEL_RDMA_V1_INVALIDATE; | |
3026 | if (need_invalidate) | |
3027 | req->Channel = SMB2_CHANNEL_RDMA_V1; | |
3028 | req->ReadChannelInfoOffset = | |
2026b06e | 3029 | cpu_to_le16(offsetof(struct smb2_read_plain_req, Buffer)); |
bd3dcc6a | 3030 | req->ReadChannelInfoLength = |
2026b06e | 3031 | cpu_to_le16(sizeof(struct smbd_buffer_descriptor_v1)); |
bd3dcc6a | 3032 | v1 = (struct smbd_buffer_descriptor_v1 *) &req->Buffer[0]; |
2026b06e SF |
3033 | v1->offset = cpu_to_le64(rdata->mr->mr->iova); |
3034 | v1->token = cpu_to_le32(rdata->mr->mr->rkey); | |
3035 | v1->length = cpu_to_le32(rdata->mr->mr->length); | |
bd3dcc6a LL |
3036 | |
3037 | *total_len += sizeof(*v1) - 1; | |
3038 | } | |
3039 | #endif | |
09a4707e PS |
3040 | if (request_type & CHAINED_REQUEST) { |
3041 | if (!(request_type & END_OF_CHAIN)) { | |
b8f57ee8 PS |
3042 | /* next 8-byte aligned request */ |
3043 | *total_len = DIV_ROUND_UP(*total_len, 8) * 8; | |
3044 | shdr->NextCommand = cpu_to_le32(*total_len); | |
09a4707e | 3045 | } else /* END_OF_CHAIN */ |
31473fc4 | 3046 | shdr->NextCommand = 0; |
09a4707e | 3047 | if (request_type & RELATED_REQUEST) { |
31473fc4 | 3048 | shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS; |
09a4707e PS |
3049 | /* |
3050 | * Related requests use info from previous read request | |
3051 | * in chain. | |
3052 | */ | |
31473fc4 PS |
3053 | shdr->SessionId = 0xFFFFFFFF; |
3054 | shdr->TreeId = 0xFFFFFFFF; | |
09a4707e PS |
3055 | req->PersistentFileId = 0xFFFFFFFF; |
3056 | req->VolatileFileId = 0xFFFFFFFF; | |
3057 | } | |
3058 | } | |
3059 | if (remaining_bytes > io_parms->length) | |
3060 | req->RemainingBytes = cpu_to_le32(remaining_bytes); | |
3061 | else | |
3062 | req->RemainingBytes = 0; | |
3063 | ||
738f9de5 | 3064 | *buf = req; |
09a4707e PS |
3065 | return rc; |
3066 | } | |
3067 | ||
3068 | static void | |
3069 | smb2_readv_callback(struct mid_q_entry *mid) | |
3070 | { | |
3071 | struct cifs_readdata *rdata = mid->callback_data; | |
3072 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
3073 | struct TCP_Server_Info *server = tcon->ses->server; | |
738f9de5 | 3074 | struct smb2_sync_hdr *shdr = |
977b6170 | 3075 | (struct smb2_sync_hdr *)rdata->iov[0].iov_base; |
09a4707e | 3076 | unsigned int credits_received = 1; |
738f9de5 PS |
3077 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
3078 | .rq_nvec = 2, | |
8321fec4 | 3079 | .rq_pages = rdata->pages, |
1dbe3466 | 3080 | .rq_offset = rdata->page_offset, |
8321fec4 JL |
3081 | .rq_npages = rdata->nr_pages, |
3082 | .rq_pagesz = rdata->pagesz, | |
3083 | .rq_tailsz = rdata->tailsz }; | |
09a4707e | 3084 | |
f96637be JP |
3085 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
3086 | __func__, mid->mid, mid->mid_state, rdata->result, | |
3087 | rdata->bytes); | |
09a4707e PS |
3088 | |
3089 | switch (mid->mid_state) { | |
3090 | case MID_RESPONSE_RECEIVED: | |
31473fc4 | 3091 | credits_received = le16_to_cpu(shdr->CreditRequest); |
09a4707e | 3092 | /* result already set, check signature */ |
4326ed2f | 3093 | if (server->sign && !mid->decrypted) { |
3c1bf7e4 PS |
3094 | int rc; |
3095 | ||
0b688cfc | 3096 | rc = smb2_verify_signature(&rqst, server); |
3c1bf7e4 | 3097 | if (rc) |
f96637be JP |
3098 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
3099 | rc); | |
3c1bf7e4 | 3100 | } |
09a4707e | 3101 | /* FIXME: should this be counted toward the initiating task? */ |
34a54d61 PS |
3102 | task_io_account_read(rdata->got_bytes); |
3103 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
09a4707e PS |
3104 | break; |
3105 | case MID_REQUEST_SUBMITTED: | |
3106 | case MID_RETRY_NEEDED: | |
3107 | rdata->result = -EAGAIN; | |
d913ed17 PS |
3108 | if (server->sign && rdata->got_bytes) |
3109 | /* reset bytes number since we can not check a sign */ | |
3110 | rdata->got_bytes = 0; | |
3111 | /* FIXME: should this be counted toward the initiating task? */ | |
3112 | task_io_account_read(rdata->got_bytes); | |
3113 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
09a4707e PS |
3114 | break; |
3115 | default: | |
3116 | if (rdata->result != -ENODATA) | |
3117 | rdata->result = -EIO; | |
3118 | } | |
bd3dcc6a LL |
3119 | #ifdef CONFIG_CIFS_SMB_DIRECT |
3120 | /* | |
3121 | * If this rdata has a memmory registered, the MR can be freed | |
3122 | * MR needs to be freed as soon as I/O finishes to prevent deadlock | |
3123 | * because they have limited number and are used for future I/Os | |
3124 | */ | |
3125 | if (rdata->mr) { | |
3126 | smbd_deregister_mr(rdata->mr); | |
3127 | rdata->mr = NULL; | |
3128 | } | |
3129 | #endif | |
09a4707e PS |
3130 | if (rdata->result) |
3131 | cifs_stats_fail_inc(tcon, SMB2_READ_HE); | |
3132 | ||
3133 | queue_work(cifsiod_wq, &rdata->work); | |
3134 | DeleteMidQEntry(mid); | |
3135 | add_credits(server, credits_received, 0); | |
3136 | } | |
3137 | ||
738f9de5 | 3138 | /* smb2_async_readv - send an async read, and set up mid to handle result */ |
09a4707e PS |
3139 | int |
3140 | smb2_async_readv(struct cifs_readdata *rdata) | |
3141 | { | |
bed9da02 | 3142 | int rc, flags = 0; |
31473fc4 PS |
3143 | char *buf; |
3144 | struct smb2_sync_hdr *shdr; | |
09a4707e | 3145 | struct cifs_io_parms io_parms; |
738f9de5 | 3146 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
c713c877 | 3147 | .rq_nvec = 1 }; |
bed9da02 | 3148 | struct TCP_Server_Info *server; |
738f9de5 | 3149 | unsigned int total_len; |
09a4707e | 3150 | |
f96637be JP |
3151 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
3152 | __func__, rdata->offset, rdata->bytes); | |
09a4707e PS |
3153 | |
3154 | io_parms.tcon = tlink_tcon(rdata->cfile->tlink); | |
3155 | io_parms.offset = rdata->offset; | |
3156 | io_parms.length = rdata->bytes; | |
3157 | io_parms.persistent_fid = rdata->cfile->fid.persistent_fid; | |
3158 | io_parms.volatile_fid = rdata->cfile->fid.volatile_fid; | |
3159 | io_parms.pid = rdata->pid; | |
bed9da02 PS |
3160 | |
3161 | server = io_parms.tcon->ses->server; | |
3162 | ||
2dabfd5b LL |
3163 | rc = smb2_new_read_req( |
3164 | (void **) &buf, &total_len, &io_parms, rdata, 0, 0); | |
bed9da02 PS |
3165 | if (rc) { |
3166 | if (rc == -EAGAIN && rdata->credits) { | |
3167 | /* credits was reset by reconnect */ | |
3168 | rdata->credits = 0; | |
3169 | /* reduce in_flight value since we won't send the req */ | |
3170 | spin_lock(&server->req_lock); | |
3171 | server->in_flight--; | |
3172 | spin_unlock(&server->req_lock); | |
3173 | } | |
09a4707e | 3174 | return rc; |
bed9da02 | 3175 | } |
09a4707e | 3176 | |
5a77e75f | 3177 | if (smb3_encryption_required(io_parms.tcon)) |
7fb8986e PS |
3178 | flags |= CIFS_TRANSFORM_REQ; |
3179 | ||
c713c877 RS |
3180 | rdata->iov[0].iov_base = buf; |
3181 | rdata->iov[0].iov_len = total_len; | |
b8f57ee8 PS |
3182 | |
3183 | shdr = (struct smb2_sync_hdr *)buf; | |
09a4707e | 3184 | |
bed9da02 | 3185 | if (rdata->credits) { |
31473fc4 | 3186 | shdr->CreditCharge = cpu_to_le16(DIV_ROUND_UP(rdata->bytes, |
bed9da02 | 3187 | SMB2_MAX_BUFFER_SIZE)); |
31473fc4 | 3188 | shdr->CreditRequest = shdr->CreditCharge; |
bed9da02 PS |
3189 | spin_lock(&server->req_lock); |
3190 | server->credits += rdata->credits - | |
31473fc4 | 3191 | le16_to_cpu(shdr->CreditCharge); |
bed9da02 PS |
3192 | spin_unlock(&server->req_lock); |
3193 | wake_up(&server->request_q); | |
7fb8986e | 3194 | flags |= CIFS_HAS_CREDITS; |
bed9da02 PS |
3195 | } |
3196 | ||
09a4707e | 3197 | kref_get(&rdata->refcount); |
fec344e3 | 3198 | rc = cifs_call_async(io_parms.tcon->ses->server, &rqst, |
09a4707e | 3199 | cifs_readv_receive, smb2_readv_callback, |
4326ed2f | 3200 | smb3_handle_read_data, rdata, flags); |
e5d04887 | 3201 | if (rc) { |
09a4707e | 3202 | kref_put(&rdata->refcount, cifs_readdata_release); |
e5d04887 | 3203 | cifs_stats_fail_inc(io_parms.tcon, SMB2_READ_HE); |
eccb4422 SF |
3204 | trace_smb3_read_err(rc, 0 /* xid */, io_parms.persistent_fid, |
3205 | io_parms.tcon->tid, io_parms.tcon->ses->Suid, | |
3206 | io_parms.offset, io_parms.length); | |
3207 | } else | |
3208 | trace_smb3_read_done(0 /* xid */, io_parms.persistent_fid, | |
3209 | io_parms.tcon->tid, io_parms.tcon->ses->Suid, | |
3210 | io_parms.offset, io_parms.length); | |
09a4707e PS |
3211 | |
3212 | cifs_small_buf_release(buf); | |
3213 | return rc; | |
3214 | } | |
33319141 | 3215 | |
d8e05039 PS |
3216 | int |
3217 | SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms, | |
3218 | unsigned int *nbytes, char **buf, int *buf_type) | |
3219 | { | |
40eff45b | 3220 | struct smb_rqst rqst; |
d8e05039 | 3221 | int resp_buftype, rc = -EACCES; |
b8f57ee8 | 3222 | struct smb2_read_plain_req *req = NULL; |
d8e05039 | 3223 | struct smb2_read_rsp *rsp = NULL; |
f5688a6d | 3224 | struct kvec iov[1]; |
da502f7d | 3225 | struct kvec rsp_iov; |
738f9de5 | 3226 | unsigned int total_len; |
7fb8986e PS |
3227 | int flags = CIFS_LOG_ERROR; |
3228 | struct cifs_ses *ses = io_parms->tcon->ses; | |
d8e05039 PS |
3229 | |
3230 | *nbytes = 0; | |
2dabfd5b | 3231 | rc = smb2_new_read_req((void **)&req, &total_len, io_parms, NULL, 0, 0); |
d8e05039 PS |
3232 | if (rc) |
3233 | return rc; | |
3234 | ||
5a77e75f | 3235 | if (smb3_encryption_required(io_parms->tcon)) |
7fb8986e PS |
3236 | flags |= CIFS_TRANSFORM_REQ; |
3237 | ||
f5688a6d RS |
3238 | iov[0].iov_base = (char *)req; |
3239 | iov[0].iov_len = total_len; | |
b8f57ee8 | 3240 | |
40eff45b RS |
3241 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
3242 | rqst.rq_iov = iov; | |
3243 | rqst.rq_nvec = 1; | |
3244 | ||
3245 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); | |
b8f57ee8 | 3246 | cifs_small_buf_release(req); |
d8e05039 | 3247 | |
da502f7d | 3248 | rsp = (struct smb2_read_rsp *)rsp_iov.iov_base; |
d8e05039 | 3249 | |
a821df3f RS |
3250 | if (rc) { |
3251 | if (rc != -ENODATA) { | |
3252 | cifs_stats_fail_inc(io_parms->tcon, SMB2_READ_HE); | |
3253 | cifs_dbg(VFS, "Send error in read = %d\n", rc); | |
3254 | } | |
eccb4422 SF |
3255 | trace_smb3_read_err(rc, xid, req->PersistentFileId, |
3256 | io_parms->tcon->tid, ses->Suid, | |
3257 | io_parms->offset, io_parms->length); | |
da502f7d | 3258 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); |
a821df3f | 3259 | return rc == -ENODATA ? 0 : rc; |
eccb4422 SF |
3260 | } else |
3261 | trace_smb3_read_done(xid, req->PersistentFileId, | |
3262 | io_parms->tcon->tid, ses->Suid, | |
3263 | io_parms->offset, io_parms->length); | |
d8e05039 | 3264 | |
a821df3f RS |
3265 | *nbytes = le32_to_cpu(rsp->DataLength); |
3266 | if ((*nbytes > CIFS_MAX_MSGSIZE) || | |
3267 | (*nbytes > io_parms->length)) { | |
3268 | cifs_dbg(FYI, "bad length %d for count %d\n", | |
3269 | *nbytes, io_parms->length); | |
3270 | rc = -EIO; | |
3271 | *nbytes = 0; | |
d8e05039 PS |
3272 | } |
3273 | ||
3274 | if (*buf) { | |
977b6170 | 3275 | memcpy(*buf, (char *)rsp + rsp->DataOffset, *nbytes); |
da502f7d | 3276 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); |
d8e05039 | 3277 | } else if (resp_buftype != CIFS_NO_BUFFER) { |
da502f7d | 3278 | *buf = rsp_iov.iov_base; |
d8e05039 PS |
3279 | if (resp_buftype == CIFS_SMALL_BUFFER) |
3280 | *buf_type = CIFS_SMALL_BUFFER; | |
3281 | else if (resp_buftype == CIFS_LARGE_BUFFER) | |
3282 | *buf_type = CIFS_LARGE_BUFFER; | |
3283 | } | |
3284 | return rc; | |
3285 | } | |
3286 | ||
33319141 PS |
3287 | /* |
3288 | * Check the mid_state and signature on received buffer (if any), and queue the | |
3289 | * workqueue completion task. | |
3290 | */ | |
3291 | static void | |
3292 | smb2_writev_callback(struct mid_q_entry *mid) | |
3293 | { | |
3294 | struct cifs_writedata *wdata = mid->callback_data; | |
3295 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); | |
3296 | unsigned int written; | |
3297 | struct smb2_write_rsp *rsp = (struct smb2_write_rsp *)mid->resp_buf; | |
3298 | unsigned int credits_received = 1; | |
3299 | ||
3300 | switch (mid->mid_state) { | |
3301 | case MID_RESPONSE_RECEIVED: | |
49f466bd | 3302 | credits_received = le16_to_cpu(rsp->sync_hdr.CreditRequest); |
33319141 PS |
3303 | wdata->result = smb2_check_receive(mid, tcon->ses->server, 0); |
3304 | if (wdata->result != 0) | |
3305 | break; | |
3306 | ||
3307 | written = le32_to_cpu(rsp->DataLength); | |
3308 | /* | |
3309 | * Mask off high 16 bits when bytes written as returned | |
3310 | * by the server is greater than bytes requested by the | |
3311 | * client. OS/2 servers are known to set incorrect | |
3312 | * CountHigh values. | |
3313 | */ | |
3314 | if (written > wdata->bytes) | |
3315 | written &= 0xFFFF; | |
3316 | ||
3317 | if (written < wdata->bytes) | |
3318 | wdata->result = -ENOSPC; | |
3319 | else | |
3320 | wdata->bytes = written; | |
3321 | break; | |
3322 | case MID_REQUEST_SUBMITTED: | |
3323 | case MID_RETRY_NEEDED: | |
3324 | wdata->result = -EAGAIN; | |
3325 | break; | |
3326 | default: | |
3327 | wdata->result = -EIO; | |
3328 | break; | |
3329 | } | |
db223a59 LL |
3330 | #ifdef CONFIG_CIFS_SMB_DIRECT |
3331 | /* | |
3332 | * If this wdata has a memory registered, the MR can be freed | |
3333 | * The number of MRs available is limited, it's important to recover | |
3334 | * used MR as soon as I/O is finished. Hold MR longer in the later | |
3335 | * I/O process can possibly result in I/O deadlock due to lack of MR | |
3336 | * to send request on I/O retry | |
3337 | */ | |
3338 | if (wdata->mr) { | |
3339 | smbd_deregister_mr(wdata->mr); | |
3340 | wdata->mr = NULL; | |
3341 | } | |
3342 | #endif | |
33319141 PS |
3343 | if (wdata->result) |
3344 | cifs_stats_fail_inc(tcon, SMB2_WRITE_HE); | |
3345 | ||
3346 | queue_work(cifsiod_wq, &wdata->work); | |
3347 | DeleteMidQEntry(mid); | |
3348 | add_credits(tcon->ses->server, credits_received, 0); | |
3349 | } | |
3350 | ||
3351 | /* smb2_async_writev - send an async write, and set up mid to handle result */ | |
3352 | int | |
4a5c80d7 SF |
3353 | smb2_async_writev(struct cifs_writedata *wdata, |
3354 | void (*release)(struct kref *kref)) | |
33319141 | 3355 | { |
cb7e9eab | 3356 | int rc = -EACCES, flags = 0; |
33319141 | 3357 | struct smb2_write_req *req = NULL; |
31473fc4 | 3358 | struct smb2_sync_hdr *shdr; |
33319141 | 3359 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
cb7e9eab | 3360 | struct TCP_Server_Info *server = tcon->ses->server; |
c713c877 | 3361 | struct kvec iov[1]; |
738f9de5 | 3362 | struct smb_rqst rqst = { }; |
f5688a6d | 3363 | unsigned int total_len; |
33319141 | 3364 | |
f5688a6d | 3365 | rc = smb2_plain_req_init(SMB2_WRITE, tcon, (void **) &req, &total_len); |
cb7e9eab PS |
3366 | if (rc) { |
3367 | if (rc == -EAGAIN && wdata->credits) { | |
3368 | /* credits was reset by reconnect */ | |
3369 | wdata->credits = 0; | |
3370 | /* reduce in_flight value since we won't send the req */ | |
3371 | spin_lock(&server->req_lock); | |
3372 | server->in_flight--; | |
3373 | spin_unlock(&server->req_lock); | |
3374 | } | |
33319141 | 3375 | goto async_writev_out; |
cb7e9eab | 3376 | } |
33319141 | 3377 | |
5a77e75f | 3378 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
3379 | flags |= CIFS_TRANSFORM_REQ; |
3380 | ||
f5688a6d | 3381 | shdr = (struct smb2_sync_hdr *)req; |
31473fc4 | 3382 | shdr->ProcessId = cpu_to_le32(wdata->cfile->pid); |
33319141 PS |
3383 | |
3384 | req->PersistentFileId = wdata->cfile->fid.persistent_fid; | |
3385 | req->VolatileFileId = wdata->cfile->fid.volatile_fid; | |
3386 | req->WriteChannelInfoOffset = 0; | |
3387 | req->WriteChannelInfoLength = 0; | |
3388 | req->Channel = 0; | |
3389 | req->Offset = cpu_to_le64(wdata->offset); | |
33319141 | 3390 | req->DataOffset = cpu_to_le16( |
f5688a6d | 3391 | offsetof(struct smb2_write_req, Buffer)); |
33319141 | 3392 | req->RemainingBytes = 0; |
db223a59 LL |
3393 | #ifdef CONFIG_CIFS_SMB_DIRECT |
3394 | /* | |
3395 | * If we want to do a server RDMA read, fill in and append | |
3396 | * smbd_buffer_descriptor_v1 to the end of write request | |
3397 | */ | |
bb4c0419 | 3398 | if (server->rdma && !server->sign && wdata->bytes >= |
db223a59 LL |
3399 | server->smbd_conn->rdma_readwrite_threshold) { |
3400 | ||
3401 | struct smbd_buffer_descriptor_v1 *v1; | |
3402 | bool need_invalidate = server->dialect == SMB30_PROT_ID; | |
3403 | ||
3404 | wdata->mr = smbd_register_mr( | |
3405 | server->smbd_conn, wdata->pages, | |
7cf20bce LL |
3406 | wdata->nr_pages, wdata->page_offset, |
3407 | wdata->tailsz, false, need_invalidate); | |
db223a59 LL |
3408 | if (!wdata->mr) { |
3409 | rc = -ENOBUFS; | |
3410 | goto async_writev_out; | |
3411 | } | |
3412 | req->Length = 0; | |
3413 | req->DataOffset = 0; | |
7cf20bce LL |
3414 | if (wdata->nr_pages > 1) |
3415 | req->RemainingBytes = | |
3416 | cpu_to_le32( | |
3417 | (wdata->nr_pages - 1) * wdata->pagesz - | |
3418 | wdata->page_offset + wdata->tailsz | |
3419 | ); | |
3420 | else | |
3421 | req->RemainingBytes = cpu_to_le32(wdata->tailsz); | |
db223a59 LL |
3422 | req->Channel = SMB2_CHANNEL_RDMA_V1_INVALIDATE; |
3423 | if (need_invalidate) | |
3424 | req->Channel = SMB2_CHANNEL_RDMA_V1; | |
3425 | req->WriteChannelInfoOffset = | |
2026b06e | 3426 | cpu_to_le16(offsetof(struct smb2_write_req, Buffer)); |
db223a59 | 3427 | req->WriteChannelInfoLength = |
2026b06e | 3428 | cpu_to_le16(sizeof(struct smbd_buffer_descriptor_v1)); |
db223a59 | 3429 | v1 = (struct smbd_buffer_descriptor_v1 *) &req->Buffer[0]; |
2026b06e SF |
3430 | v1->offset = cpu_to_le64(wdata->mr->mr->iova); |
3431 | v1->token = cpu_to_le32(wdata->mr->mr->rkey); | |
3432 | v1->length = cpu_to_le32(wdata->mr->mr->length); | |
db223a59 LL |
3433 | } |
3434 | #endif | |
c713c877 RS |
3435 | iov[0].iov_len = total_len - 1; |
3436 | iov[0].iov_base = (char *)req; | |
33319141 | 3437 | |
738f9de5 | 3438 | rqst.rq_iov = iov; |
c713c877 | 3439 | rqst.rq_nvec = 1; |
eddb079d | 3440 | rqst.rq_pages = wdata->pages; |
57a929a6 | 3441 | rqst.rq_offset = wdata->page_offset; |
eddb079d JL |
3442 | rqst.rq_npages = wdata->nr_pages; |
3443 | rqst.rq_pagesz = wdata->pagesz; | |
3444 | rqst.rq_tailsz = wdata->tailsz; | |
db223a59 LL |
3445 | #ifdef CONFIG_CIFS_SMB_DIRECT |
3446 | if (wdata->mr) { | |
c713c877 | 3447 | iov[0].iov_len += sizeof(struct smbd_buffer_descriptor_v1); |
db223a59 LL |
3448 | rqst.rq_npages = 0; |
3449 | } | |
3450 | #endif | |
f96637be JP |
3451 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
3452 | wdata->offset, wdata->bytes); | |
33319141 | 3453 | |
db223a59 LL |
3454 | #ifdef CONFIG_CIFS_SMB_DIRECT |
3455 | /* For RDMA read, I/O size is in RemainingBytes not in Length */ | |
3456 | if (!wdata->mr) | |
3457 | req->Length = cpu_to_le32(wdata->bytes); | |
3458 | #else | |
33319141 | 3459 | req->Length = cpu_to_le32(wdata->bytes); |
db223a59 | 3460 | #endif |
33319141 | 3461 | |
cb7e9eab | 3462 | if (wdata->credits) { |
31473fc4 | 3463 | shdr->CreditCharge = cpu_to_le16(DIV_ROUND_UP(wdata->bytes, |
cb7e9eab | 3464 | SMB2_MAX_BUFFER_SIZE)); |
31473fc4 | 3465 | shdr->CreditRequest = shdr->CreditCharge; |
cb7e9eab PS |
3466 | spin_lock(&server->req_lock); |
3467 | server->credits += wdata->credits - | |
31473fc4 | 3468 | le16_to_cpu(shdr->CreditCharge); |
cb7e9eab PS |
3469 | spin_unlock(&server->req_lock); |
3470 | wake_up(&server->request_q); | |
7fb8986e | 3471 | flags |= CIFS_HAS_CREDITS; |
cb7e9eab PS |
3472 | } |
3473 | ||
33319141 | 3474 | kref_get(&wdata->refcount); |
9b7c18a2 PS |
3475 | rc = cifs_call_async(server, &rqst, NULL, smb2_writev_callback, NULL, |
3476 | wdata, flags); | |
33319141 | 3477 | |
e5d04887 | 3478 | if (rc) { |
eccb4422 SF |
3479 | trace_smb3_write_err(0 /* no xid */, req->PersistentFileId, |
3480 | tcon->tid, tcon->ses->Suid, wdata->offset, | |
3481 | wdata->bytes, rc); | |
4a5c80d7 | 3482 | kref_put(&wdata->refcount, release); |
e5d04887 | 3483 | cifs_stats_fail_inc(tcon, SMB2_WRITE_HE); |
eccb4422 SF |
3484 | } else |
3485 | trace_smb3_write_done(0 /* no xid */, req->PersistentFileId, | |
3486 | tcon->tid, tcon->ses->Suid, wdata->offset, | |
3487 | wdata->bytes); | |
33319141 | 3488 | |
33319141 PS |
3489 | async_writev_out: |
3490 | cifs_small_buf_release(req); | |
33319141 PS |
3491 | return rc; |
3492 | } | |
009d3443 PS |
3493 | |
3494 | /* | |
3495 | * SMB2_write function gets iov pointer to kvec array with n_vec as a length. | |
3496 | * The length field from io_parms must be at least 1 and indicates a number of | |
3497 | * elements with data to write that begins with position 1 in iov array. All | |
3498 | * data length is specified by count. | |
3499 | */ | |
3500 | int | |
3501 | SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, | |
3502 | unsigned int *nbytes, struct kvec *iov, int n_vec) | |
3503 | { | |
40eff45b | 3504 | struct smb_rqst rqst; |
009d3443 PS |
3505 | int rc = 0; |
3506 | struct smb2_write_req *req = NULL; | |
3507 | struct smb2_write_rsp *rsp = NULL; | |
3508 | int resp_buftype; | |
da502f7d | 3509 | struct kvec rsp_iov; |
7fb8986e | 3510 | int flags = 0; |
f5688a6d | 3511 | unsigned int total_len; |
da502f7d | 3512 | |
009d3443 PS |
3513 | *nbytes = 0; |
3514 | ||
3515 | if (n_vec < 1) | |
3516 | return rc; | |
3517 | ||
f5688a6d RS |
3518 | rc = smb2_plain_req_init(SMB2_WRITE, io_parms->tcon, (void **) &req, |
3519 | &total_len); | |
009d3443 PS |
3520 | if (rc) |
3521 | return rc; | |
3522 | ||
3523 | if (io_parms->tcon->ses->server == NULL) | |
3524 | return -ECONNABORTED; | |
3525 | ||
5a77e75f | 3526 | if (smb3_encryption_required(io_parms->tcon)) |
7fb8986e PS |
3527 | flags |= CIFS_TRANSFORM_REQ; |
3528 | ||
f5688a6d | 3529 | req->sync_hdr.ProcessId = cpu_to_le32(io_parms->pid); |
009d3443 PS |
3530 | |
3531 | req->PersistentFileId = io_parms->persistent_fid; | |
3532 | req->VolatileFileId = io_parms->volatile_fid; | |
3533 | req->WriteChannelInfoOffset = 0; | |
3534 | req->WriteChannelInfoLength = 0; | |
3535 | req->Channel = 0; | |
3536 | req->Length = cpu_to_le32(io_parms->length); | |
3537 | req->Offset = cpu_to_le64(io_parms->offset); | |
009d3443 | 3538 | req->DataOffset = cpu_to_le16( |
f5688a6d | 3539 | offsetof(struct smb2_write_req, Buffer)); |
009d3443 PS |
3540 | req->RemainingBytes = 0; |
3541 | ||
3542 | iov[0].iov_base = (char *)req; | |
f5688a6d RS |
3543 | /* 1 for Buffer */ |
3544 | iov[0].iov_len = total_len - 1; | |
009d3443 | 3545 | |
40eff45b RS |
3546 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
3547 | rqst.rq_iov = iov; | |
3548 | rqst.rq_nvec = n_vec + 1; | |
3549 | ||
3550 | rc = cifs_send_recv(xid, io_parms->tcon->ses, &rqst, | |
f5688a6d | 3551 | &resp_buftype, flags, &rsp_iov); |
da502f7d PS |
3552 | cifs_small_buf_release(req); |
3553 | rsp = (struct smb2_write_rsp *)rsp_iov.iov_base; | |
009d3443 PS |
3554 | |
3555 | if (rc) { | |
eccb4422 SF |
3556 | trace_smb3_write_err(xid, req->PersistentFileId, |
3557 | io_parms->tcon->tid, | |
3558 | io_parms->tcon->ses->Suid, | |
3559 | io_parms->offset, io_parms->length, rc); | |
009d3443 | 3560 | cifs_stats_fail_inc(io_parms->tcon, SMB2_WRITE_HE); |
f96637be | 3561 | cifs_dbg(VFS, "Send error in write = %d\n", rc); |
eccb4422 | 3562 | } else { |
009d3443 | 3563 | *nbytes = le32_to_cpu(rsp->DataLength); |
eccb4422 SF |
3564 | trace_smb3_write_done(xid, req->PersistentFileId, |
3565 | io_parms->tcon->tid, | |
3566 | io_parms->tcon->ses->Suid, | |
3567 | io_parms->offset, *nbytes); | |
3568 | } | |
e5d04887 PS |
3569 | |
3570 | free_rsp_buf(resp_buftype, rsp); | |
009d3443 PS |
3571 | return rc; |
3572 | } | |
35143eb5 | 3573 | |
d324f08d PS |
3574 | static unsigned int |
3575 | num_entries(char *bufstart, char *end_of_buf, char **lastentry, size_t size) | |
3576 | { | |
3577 | int len; | |
3578 | unsigned int entrycount = 0; | |
3579 | unsigned int next_offset = 0; | |
3580 | FILE_DIRECTORY_INFO *entryptr; | |
3581 | ||
3582 | if (bufstart == NULL) | |
3583 | return 0; | |
3584 | ||
3585 | entryptr = (FILE_DIRECTORY_INFO *)bufstart; | |
3586 | ||
3587 | while (1) { | |
3588 | entryptr = (FILE_DIRECTORY_INFO *) | |
3589 | ((char *)entryptr + next_offset); | |
3590 | ||
3591 | if ((char *)entryptr + size > end_of_buf) { | |
f96637be | 3592 | cifs_dbg(VFS, "malformed search entry would overflow\n"); |
d324f08d PS |
3593 | break; |
3594 | } | |
3595 | ||
3596 | len = le32_to_cpu(entryptr->FileNameLength); | |
3597 | if ((char *)entryptr + len + size > end_of_buf) { | |
f96637be JP |
3598 | cifs_dbg(VFS, "directory entry name would overflow frame end of buf %p\n", |
3599 | end_of_buf); | |
d324f08d PS |
3600 | break; |
3601 | } | |
3602 | ||
3603 | *lastentry = (char *)entryptr; | |
3604 | entrycount++; | |
3605 | ||
3606 | next_offset = le32_to_cpu(entryptr->NextEntryOffset); | |
3607 | if (!next_offset) | |
3608 | break; | |
3609 | } | |
3610 | ||
3611 | return entrycount; | |
3612 | } | |
3613 | ||
3614 | /* | |
3615 | * Readdir/FindFirst | |
3616 | */ | |
3617 | int | |
3618 | SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon, | |
3619 | u64 persistent_fid, u64 volatile_fid, int index, | |
3620 | struct cifs_search_info *srch_inf) | |
3621 | { | |
40eff45b | 3622 | struct smb_rqst rqst; |
d324f08d PS |
3623 | struct smb2_query_directory_req *req; |
3624 | struct smb2_query_directory_rsp *rsp = NULL; | |
3625 | struct kvec iov[2]; | |
da502f7d | 3626 | struct kvec rsp_iov; |
d324f08d PS |
3627 | int rc = 0; |
3628 | int len; | |
75fdfc84 | 3629 | int resp_buftype = CIFS_NO_BUFFER; |
d324f08d PS |
3630 | unsigned char *bufptr; |
3631 | struct TCP_Server_Info *server; | |
3632 | struct cifs_ses *ses = tcon->ses; | |
3633 | __le16 asteriks = cpu_to_le16('*'); | |
3634 | char *end_of_smb; | |
3635 | unsigned int output_size = CIFSMaxBufSize; | |
3636 | size_t info_buf_size; | |
7fb8986e | 3637 | int flags = 0; |
7c00c3a6 | 3638 | unsigned int total_len; |
d324f08d PS |
3639 | |
3640 | if (ses && (ses->server)) | |
3641 | server = ses->server; | |
3642 | else | |
3643 | return -EIO; | |
3644 | ||
7c00c3a6 RS |
3645 | rc = smb2_plain_req_init(SMB2_QUERY_DIRECTORY, tcon, (void **) &req, |
3646 | &total_len); | |
d324f08d PS |
3647 | if (rc) |
3648 | return rc; | |
3649 | ||
5a77e75f | 3650 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
3651 | flags |= CIFS_TRANSFORM_REQ; |
3652 | ||
d324f08d PS |
3653 | switch (srch_inf->info_level) { |
3654 | case SMB_FIND_FILE_DIRECTORY_INFO: | |
3655 | req->FileInformationClass = FILE_DIRECTORY_INFORMATION; | |
3656 | info_buf_size = sizeof(FILE_DIRECTORY_INFO) - 1; | |
3657 | break; | |
3658 | case SMB_FIND_FILE_ID_FULL_DIR_INFO: | |
3659 | req->FileInformationClass = FILEID_FULL_DIRECTORY_INFORMATION; | |
3660 | info_buf_size = sizeof(SEARCH_ID_FULL_DIR_INFO) - 1; | |
3661 | break; | |
3662 | default: | |
f96637be JP |
3663 | cifs_dbg(VFS, "info level %u isn't supported\n", |
3664 | srch_inf->info_level); | |
d324f08d PS |
3665 | rc = -EINVAL; |
3666 | goto qdir_exit; | |
3667 | } | |
3668 | ||
3669 | req->FileIndex = cpu_to_le32(index); | |
3670 | req->PersistentFileId = persistent_fid; | |
3671 | req->VolatileFileId = volatile_fid; | |
3672 | ||
3673 | len = 0x2; | |
3674 | bufptr = req->Buffer; | |
3675 | memcpy(bufptr, &asteriks, len); | |
3676 | ||
3677 | req->FileNameOffset = | |
7c00c3a6 | 3678 | cpu_to_le16(sizeof(struct smb2_query_directory_req) - 1); |
d324f08d PS |
3679 | req->FileNameLength = cpu_to_le16(len); |
3680 | /* | |
3681 | * BB could be 30 bytes or so longer if we used SMB2 specific | |
3682 | * buffer lengths, but this is safe and close enough. | |
3683 | */ | |
3684 | output_size = min_t(unsigned int, output_size, server->maxBuf); | |
3685 | output_size = min_t(unsigned int, output_size, 2 << 15); | |
3686 | req->OutputBufferLength = cpu_to_le32(output_size); | |
3687 | ||
3688 | iov[0].iov_base = (char *)req; | |
7c00c3a6 RS |
3689 | /* 1 for Buffer */ |
3690 | iov[0].iov_len = total_len - 1; | |
d324f08d PS |
3691 | |
3692 | iov[1].iov_base = (char *)(req->Buffer); | |
3693 | iov[1].iov_len = len; | |
3694 | ||
40eff45b RS |
3695 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
3696 | rqst.rq_iov = iov; | |
3697 | rqst.rq_nvec = 2; | |
3698 | ||
3699 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d PS |
3700 | cifs_small_buf_release(req); |
3701 | rsp = (struct smb2_query_directory_rsp *)rsp_iov.iov_base; | |
e5d04887 | 3702 | |
d324f08d | 3703 | if (rc) { |
31473fc4 | 3704 | if (rc == -ENODATA && |
49f466bd | 3705 | rsp->sync_hdr.Status == STATUS_NO_MORE_FILES) { |
52755808 PS |
3706 | srch_inf->endOfSearch = true; |
3707 | rc = 0; | |
3708 | } | |
d324f08d PS |
3709 | cifs_stats_fail_inc(tcon, SMB2_QUERY_DIRECTORY_HE); |
3710 | goto qdir_exit; | |
3711 | } | |
d324f08d | 3712 | |
730928c8 RS |
3713 | rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), |
3714 | le32_to_cpu(rsp->OutputBufferLength), &rsp_iov, | |
3715 | info_buf_size); | |
d324f08d PS |
3716 | if (rc) |
3717 | goto qdir_exit; | |
3718 | ||
3719 | srch_inf->unicode = true; | |
3720 | ||
3721 | if (srch_inf->ntwrk_buf_start) { | |
3722 | if (srch_inf->smallBuf) | |
3723 | cifs_small_buf_release(srch_inf->ntwrk_buf_start); | |
3724 | else | |
3725 | cifs_buf_release(srch_inf->ntwrk_buf_start); | |
3726 | } | |
3727 | srch_inf->ntwrk_buf_start = (char *)rsp; | |
977b6170 RS |
3728 | srch_inf->srch_entries_start = srch_inf->last_entry = |
3729 | (char *)rsp + le16_to_cpu(rsp->OutputBufferOffset); | |
3730 | end_of_smb = rsp_iov.iov_len + (char *)rsp; | |
d324f08d PS |
3731 | srch_inf->entries_in_buffer = |
3732 | num_entries(srch_inf->srch_entries_start, end_of_smb, | |
3733 | &srch_inf->last_entry, info_buf_size); | |
3734 | srch_inf->index_of_last_entry += srch_inf->entries_in_buffer; | |
f96637be JP |
3735 | cifs_dbg(FYI, "num entries %d last_index %lld srch start %p srch end %p\n", |
3736 | srch_inf->entries_in_buffer, srch_inf->index_of_last_entry, | |
3737 | srch_inf->srch_entries_start, srch_inf->last_entry); | |
d324f08d PS |
3738 | if (resp_buftype == CIFS_LARGE_BUFFER) |
3739 | srch_inf->smallBuf = false; | |
3740 | else if (resp_buftype == CIFS_SMALL_BUFFER) | |
3741 | srch_inf->smallBuf = true; | |
3742 | else | |
f96637be | 3743 | cifs_dbg(VFS, "illegal search buffer type\n"); |
d324f08d | 3744 | |
d324f08d PS |
3745 | return rc; |
3746 | ||
3747 | qdir_exit: | |
3748 | free_rsp_buf(resp_buftype, rsp); | |
3749 | return rc; | |
3750 | } | |
3751 | ||
35143eb5 PS |
3752 | static int |
3753 | send_set_info(const unsigned int xid, struct cifs_tcon *tcon, | |
dac95340 SP |
3754 | u64 persistent_fid, u64 volatile_fid, u32 pid, u8 info_class, |
3755 | u8 info_type, u32 additional_info, unsigned int num, | |
3756 | void **data, unsigned int *size) | |
35143eb5 | 3757 | { |
40eff45b | 3758 | struct smb_rqst rqst; |
35143eb5 PS |
3759 | struct smb2_set_info_req *req; |
3760 | struct smb2_set_info_rsp *rsp = NULL; | |
3761 | struct kvec *iov; | |
da502f7d | 3762 | struct kvec rsp_iov; |
35143eb5 PS |
3763 | int rc = 0; |
3764 | int resp_buftype; | |
3765 | unsigned int i; | |
35143eb5 | 3766 | struct cifs_ses *ses = tcon->ses; |
7fb8986e | 3767 | int flags = 0; |
2fc803ef | 3768 | unsigned int total_len; |
35143eb5 | 3769 | |
68a6afa7 | 3770 | if (!ses || !(ses->server)) |
35143eb5 PS |
3771 | return -EIO; |
3772 | ||
3773 | if (!num) | |
3774 | return -EINVAL; | |
3775 | ||
6da2ec56 | 3776 | iov = kmalloc_array(num, sizeof(struct kvec), GFP_KERNEL); |
35143eb5 PS |
3777 | if (!iov) |
3778 | return -ENOMEM; | |
3779 | ||
2fc803ef | 3780 | rc = smb2_plain_req_init(SMB2_SET_INFO, tcon, (void **) &req, &total_len); |
35143eb5 PS |
3781 | if (rc) { |
3782 | kfree(iov); | |
3783 | return rc; | |
3784 | } | |
3785 | ||
5a77e75f | 3786 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
3787 | flags |= CIFS_TRANSFORM_REQ; |
3788 | ||
2fc803ef | 3789 | req->sync_hdr.ProcessId = cpu_to_le32(pid); |
c839ff24 | 3790 | |
dac95340 | 3791 | req->InfoType = info_type; |
35143eb5 PS |
3792 | req->FileInfoClass = info_class; |
3793 | req->PersistentFileId = persistent_fid; | |
3794 | req->VolatileFileId = volatile_fid; | |
dac95340 | 3795 | req->AdditionalInformation = cpu_to_le32(additional_info); |
35143eb5 | 3796 | |
35143eb5 | 3797 | req->BufferOffset = |
2fc803ef | 3798 | cpu_to_le16(sizeof(struct smb2_set_info_req) - 1); |
35143eb5 PS |
3799 | req->BufferLength = cpu_to_le32(*size); |
3800 | ||
35143eb5 | 3801 | memcpy(req->Buffer, *data, *size); |
2fc803ef | 3802 | total_len += *size; |
35143eb5 PS |
3803 | |
3804 | iov[0].iov_base = (char *)req; | |
2fc803ef RS |
3805 | /* 1 for Buffer */ |
3806 | iov[0].iov_len = total_len - 1; | |
35143eb5 PS |
3807 | |
3808 | for (i = 1; i < num; i++) { | |
35143eb5 PS |
3809 | le32_add_cpu(&req->BufferLength, size[i]); |
3810 | iov[i].iov_base = (char *)data[i]; | |
3811 | iov[i].iov_len = size[i]; | |
3812 | } | |
3813 | ||
40eff45b RS |
3814 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
3815 | rqst.rq_iov = iov; | |
3816 | rqst.rq_nvec = num; | |
3817 | ||
3818 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, | |
2fc803ef | 3819 | &rsp_iov); |
f46ecbd9 | 3820 | cifs_buf_release(req); |
da502f7d | 3821 | rsp = (struct smb2_set_info_rsp *)rsp_iov.iov_base; |
35143eb5 | 3822 | |
eccb4422 | 3823 | if (rc != 0) { |
35143eb5 | 3824 | cifs_stats_fail_inc(tcon, SMB2_SET_INFO_HE); |
eccb4422 SF |
3825 | trace_smb3_set_info_err(xid, persistent_fid, tcon->tid, |
3826 | ses->Suid, info_class, (__u32)info_type, rc); | |
3827 | } | |
7d3fb24b | 3828 | |
35143eb5 PS |
3829 | free_rsp_buf(resp_buftype, rsp); |
3830 | kfree(iov); | |
3831 | return rc; | |
3832 | } | |
3833 | ||
3834 | int | |
3835 | SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon, | |
3836 | u64 persistent_fid, u64 volatile_fid, __le16 *target_file) | |
3837 | { | |
3838 | struct smb2_file_rename_info info; | |
3839 | void **data; | |
3840 | unsigned int size[2]; | |
3841 | int rc; | |
3842 | int len = (2 * UniStrnlen((wchar_t *)target_file, PATH_MAX)); | |
3843 | ||
6da2ec56 | 3844 | data = kmalloc_array(2, sizeof(void *), GFP_KERNEL); |
35143eb5 PS |
3845 | if (!data) |
3846 | return -ENOMEM; | |
3847 | ||
3848 | info.ReplaceIfExists = 1; /* 1 = replace existing target with new */ | |
3849 | /* 0 = fail if target already exists */ | |
3850 | info.RootDirectory = 0; /* MBZ for network ops (why does spec say?) */ | |
3851 | info.FileNameLength = cpu_to_le32(len); | |
3852 | ||
3853 | data[0] = &info; | |
3854 | size[0] = sizeof(struct smb2_file_rename_info); | |
3855 | ||
3856 | data[1] = target_file; | |
3857 | size[1] = len + 2 /* null */; | |
3858 | ||
3859 | rc = send_set_info(xid, tcon, persistent_fid, volatile_fid, | |
dac95340 SP |
3860 | current->tgid, FILE_RENAME_INFORMATION, SMB2_O_INFO_FILE, |
3861 | 0, 2, data, size); | |
35143eb5 PS |
3862 | kfree(data); |
3863 | return rc; | |
3864 | } | |
568798cc | 3865 | |
897fba11 SF |
3866 | int |
3867 | SMB2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, | |
3868 | u64 persistent_fid, u64 volatile_fid) | |
3869 | { | |
3870 | __u8 delete_pending = 1; | |
3871 | void *data; | |
3872 | unsigned int size; | |
3873 | ||
3874 | data = &delete_pending; | |
3875 | size = 1; /* sizeof __u8 */ | |
3876 | ||
3877 | return send_set_info(xid, tcon, persistent_fid, volatile_fid, | |
dac95340 SP |
3878 | current->tgid, FILE_DISPOSITION_INFORMATION, SMB2_O_INFO_FILE, |
3879 | 0, 1, &data, &size); | |
897fba11 SF |
3880 | } |
3881 | ||
568798cc PS |
3882 | int |
3883 | SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon, | |
3884 | u64 persistent_fid, u64 volatile_fid, __le16 *target_file) | |
3885 | { | |
3886 | struct smb2_file_link_info info; | |
3887 | void **data; | |
3888 | unsigned int size[2]; | |
3889 | int rc; | |
3890 | int len = (2 * UniStrnlen((wchar_t *)target_file, PATH_MAX)); | |
3891 | ||
6da2ec56 | 3892 | data = kmalloc_array(2, sizeof(void *), GFP_KERNEL); |
568798cc PS |
3893 | if (!data) |
3894 | return -ENOMEM; | |
3895 | ||
3896 | info.ReplaceIfExists = 0; /* 1 = replace existing link with new */ | |
3897 | /* 0 = fail if link already exists */ | |
3898 | info.RootDirectory = 0; /* MBZ for network ops (why does spec say?) */ | |
3899 | info.FileNameLength = cpu_to_le32(len); | |
3900 | ||
3901 | data[0] = &info; | |
3902 | size[0] = sizeof(struct smb2_file_link_info); | |
3903 | ||
3904 | data[1] = target_file; | |
3905 | size[1] = len + 2 /* null */; | |
3906 | ||
3907 | rc = send_set_info(xid, tcon, persistent_fid, volatile_fid, | |
dac95340 SP |
3908 | current->tgid, FILE_LINK_INFORMATION, SMB2_O_INFO_FILE, |
3909 | 0, 2, data, size); | |
568798cc PS |
3910 | kfree(data); |
3911 | return rc; | |
3912 | } | |
c839ff24 PS |
3913 | |
3914 | int | |
3915 | SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, | |
f29ebb47 | 3916 | u64 volatile_fid, u32 pid, __le64 *eof, bool is_falloc) |
c839ff24 PS |
3917 | { |
3918 | struct smb2_file_eof_info info; | |
3919 | void *data; | |
3920 | unsigned int size; | |
3921 | ||
3922 | info.EndOfFile = *eof; | |
3923 | ||
3924 | data = &info; | |
3925 | size = sizeof(struct smb2_file_eof_info); | |
3926 | ||
f29ebb47 SF |
3927 | if (is_falloc) |
3928 | return send_set_info(xid, tcon, persistent_fid, volatile_fid, | |
dac95340 SP |
3929 | pid, FILE_ALLOCATION_INFORMATION, SMB2_O_INFO_FILE, |
3930 | 0, 1, &data, &size); | |
f29ebb47 SF |
3931 | else |
3932 | return send_set_info(xid, tcon, persistent_fid, volatile_fid, | |
dac95340 SP |
3933 | pid, FILE_END_OF_FILE_INFORMATION, SMB2_O_INFO_FILE, |
3934 | 0, 1, &data, &size); | |
c839ff24 | 3935 | } |
1feeaac7 PS |
3936 | |
3937 | int | |
3938 | SMB2_set_info(const unsigned int xid, struct cifs_tcon *tcon, | |
3939 | u64 persistent_fid, u64 volatile_fid, FILE_BASIC_INFO *buf) | |
3940 | { | |
3941 | unsigned int size; | |
3942 | size = sizeof(FILE_BASIC_INFO); | |
3943 | return send_set_info(xid, tcon, persistent_fid, volatile_fid, | |
dac95340 SP |
3944 | current->tgid, FILE_BASIC_INFORMATION, SMB2_O_INFO_FILE, |
3945 | 0, 1, (void **)&buf, &size); | |
3946 | } | |
3947 | ||
3948 | int | |
3949 | SMB2_set_acl(const unsigned int xid, struct cifs_tcon *tcon, | |
3950 | u64 persistent_fid, u64 volatile_fid, | |
3951 | struct cifs_ntsd *pnntsd, int pacllen, int aclflag) | |
3952 | { | |
3953 | return send_set_info(xid, tcon, persistent_fid, volatile_fid, | |
3954 | current->tgid, 0, SMB2_O_INFO_SECURITY, aclflag, | |
3955 | 1, (void **)&pnntsd, &pacllen); | |
1feeaac7 | 3956 | } |
983c88a4 | 3957 | |
5517554e RS |
3958 | int |
3959 | SMB2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, | |
3960 | u64 persistent_fid, u64 volatile_fid, | |
3961 | struct smb2_file_full_ea_info *buf, int len) | |
3962 | { | |
3963 | return send_set_info(xid, tcon, persistent_fid, volatile_fid, | |
3964 | current->tgid, FILE_FULL_EA_INFORMATION, SMB2_O_INFO_FILE, | |
3965 | 0, 1, (void **)&buf, &len); | |
3966 | } | |
3967 | ||
983c88a4 PS |
3968 | int |
3969 | SMB2_oplock_break(const unsigned int xid, struct cifs_tcon *tcon, | |
3970 | const u64 persistent_fid, const u64 volatile_fid, | |
3971 | __u8 oplock_level) | |
3972 | { | |
40eff45b | 3973 | struct smb_rqst rqst; |
983c88a4 | 3974 | int rc; |
0d5a288d | 3975 | struct smb2_oplock_break *req = NULL; |
21ad9487 | 3976 | struct cifs_ses *ses = tcon->ses; |
7fb8986e | 3977 | int flags = CIFS_OBREAK_OP; |
21ad9487 RS |
3978 | unsigned int total_len; |
3979 | struct kvec iov[1]; | |
3980 | struct kvec rsp_iov; | |
3981 | int resp_buf_type; | |
983c88a4 | 3982 | |
f96637be | 3983 | cifs_dbg(FYI, "SMB2_oplock_break\n"); |
21ad9487 RS |
3984 | rc = smb2_plain_req_init(SMB2_OPLOCK_BREAK, tcon, (void **) &req, |
3985 | &total_len); | |
983c88a4 PS |
3986 | if (rc) |
3987 | return rc; | |
3988 | ||
5a77e75f | 3989 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
3990 | flags |= CIFS_TRANSFORM_REQ; |
3991 | ||
983c88a4 PS |
3992 | req->VolatileFid = volatile_fid; |
3993 | req->PersistentFid = persistent_fid; | |
3994 | req->OplockLevel = oplock_level; | |
21ad9487 | 3995 | req->sync_hdr.CreditRequest = cpu_to_le16(1); |
983c88a4 | 3996 | |
21ad9487 RS |
3997 | flags |= CIFS_NO_RESP; |
3998 | ||
3999 | iov[0].iov_base = (char *)req; | |
4000 | iov[0].iov_len = total_len; | |
4001 | ||
40eff45b RS |
4002 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
4003 | rqst.rq_iov = iov; | |
4004 | rqst.rq_nvec = 1; | |
4005 | ||
4006 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buf_type, flags, &rsp_iov); | |
da502f7d | 4007 | cifs_small_buf_release(req); |
983c88a4 PS |
4008 | |
4009 | if (rc) { | |
4010 | cifs_stats_fail_inc(tcon, SMB2_OPLOCK_BREAK_HE); | |
f96637be | 4011 | cifs_dbg(FYI, "Send error in Oplock Break = %d\n", rc); |
983c88a4 PS |
4012 | } |
4013 | ||
4014 | return rc; | |
4015 | } | |
6fc05c25 | 4016 | |
730928c8 RS |
4017 | void |
4018 | smb2_copy_fs_info_to_kstatfs(struct smb2_fs_full_size_info *pfs_inf, | |
4019 | struct kstatfs *kst) | |
6fc05c25 PS |
4020 | { |
4021 | kst->f_bsize = le32_to_cpu(pfs_inf->BytesPerSector) * | |
4022 | le32_to_cpu(pfs_inf->SectorsPerAllocationUnit); | |
4023 | kst->f_blocks = le64_to_cpu(pfs_inf->TotalAllocationUnits); | |
42bec214 SP |
4024 | kst->f_bfree = kst->f_bavail = |
4025 | le64_to_cpu(pfs_inf->CallerAvailableAllocationUnits); | |
6fc05c25 PS |
4026 | return; |
4027 | } | |
4028 | ||
2d304217 SF |
4029 | static void |
4030 | copy_posix_fs_info_to_kstatfs(FILE_SYSTEM_POSIX_INFO *response_data, | |
4031 | struct kstatfs *kst) | |
4032 | { | |
4033 | kst->f_bsize = le32_to_cpu(response_data->BlockSize); | |
4034 | kst->f_blocks = le64_to_cpu(response_data->TotalBlocks); | |
4035 | kst->f_bfree = le64_to_cpu(response_data->BlocksAvail); | |
4036 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) | |
4037 | kst->f_bavail = kst->f_bfree; | |
4038 | else | |
4039 | kst->f_bavail = le64_to_cpu(response_data->UserBlocksAvail); | |
4040 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) | |
4041 | kst->f_files = le64_to_cpu(response_data->TotalFileNodes); | |
4042 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) | |
4043 | kst->f_ffree = le64_to_cpu(response_data->FreeFileNodes); | |
4044 | ||
4045 | return; | |
4046 | } | |
2d304217 | 4047 | |
6fc05c25 PS |
4048 | static int |
4049 | build_qfs_info_req(struct kvec *iov, struct cifs_tcon *tcon, int level, | |
4050 | int outbuf_len, u64 persistent_fid, u64 volatile_fid) | |
4051 | { | |
c0953f2e | 4052 | struct TCP_Server_Info *server; |
6fc05c25 PS |
4053 | int rc; |
4054 | struct smb2_query_info_req *req; | |
b2fb7fec | 4055 | unsigned int total_len; |
6fc05c25 | 4056 | |
f96637be | 4057 | cifs_dbg(FYI, "Query FSInfo level %d\n", level); |
6fc05c25 PS |
4058 | |
4059 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
4060 | return -EIO; | |
4061 | ||
c0953f2e GS |
4062 | server = tcon->ses->server; |
4063 | ||
b2fb7fec RS |
4064 | rc = smb2_plain_req_init(SMB2_QUERY_INFO, tcon, (void **) &req, |
4065 | &total_len); | |
6fc05c25 PS |
4066 | if (rc) |
4067 | return rc; | |
4068 | ||
4069 | req->InfoType = SMB2_O_INFO_FILESYSTEM; | |
4070 | req->FileInfoClass = level; | |
4071 | req->PersistentFileId = persistent_fid; | |
4072 | req->VolatileFileId = volatile_fid; | |
b2fb7fec | 4073 | /* 1 for pad */ |
6fc05c25 | 4074 | req->InputBufferOffset = |
b2fb7fec | 4075 | cpu_to_le16(sizeof(struct smb2_query_info_req) - 1); |
6fc05c25 | 4076 | req->OutputBufferLength = cpu_to_le32( |
1fc6ad2f | 4077 | outbuf_len + sizeof(struct smb2_query_info_rsp) - 1); |
6fc05c25 PS |
4078 | |
4079 | iov->iov_base = (char *)req; | |
b2fb7fec | 4080 | iov->iov_len = total_len; |
6fc05c25 PS |
4081 | return 0; |
4082 | } | |
4083 | ||
2d304217 SF |
4084 | int |
4085 | SMB311_posix_qfs_info(const unsigned int xid, struct cifs_tcon *tcon, | |
4086 | u64 persistent_fid, u64 volatile_fid, struct kstatfs *fsdata) | |
4087 | { | |
4088 | struct smb_rqst rqst; | |
4089 | struct smb2_query_info_rsp *rsp = NULL; | |
4090 | struct kvec iov; | |
4091 | struct kvec rsp_iov; | |
4092 | int rc = 0; | |
4093 | int resp_buftype; | |
4094 | struct cifs_ses *ses = tcon->ses; | |
4095 | FILE_SYSTEM_POSIX_INFO *info = NULL; | |
4096 | int flags = 0; | |
4097 | ||
4098 | rc = build_qfs_info_req(&iov, tcon, FS_POSIX_INFORMATION, | |
4099 | sizeof(FILE_SYSTEM_POSIX_INFO), | |
4100 | persistent_fid, volatile_fid); | |
4101 | if (rc) | |
4102 | return rc; | |
4103 | ||
4104 | if (smb3_encryption_required(tcon)) | |
4105 | flags |= CIFS_TRANSFORM_REQ; | |
4106 | ||
4107 | memset(&rqst, 0, sizeof(struct smb_rqst)); | |
4108 | rqst.rq_iov = &iov; | |
4109 | rqst.rq_nvec = 1; | |
4110 | ||
4111 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); | |
4112 | cifs_small_buf_release(iov.iov_base); | |
4113 | if (rc) { | |
4114 | cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); | |
4115 | goto posix_qfsinf_exit; | |
4116 | } | |
4117 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; | |
4118 | ||
4119 | info = (FILE_SYSTEM_POSIX_INFO *)( | |
4120 | le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp); | |
730928c8 RS |
4121 | rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), |
4122 | le32_to_cpu(rsp->OutputBufferLength), &rsp_iov, | |
4123 | sizeof(FILE_SYSTEM_POSIX_INFO)); | |
2d304217 SF |
4124 | if (!rc) |
4125 | copy_posix_fs_info_to_kstatfs(info, fsdata); | |
4126 | ||
4127 | posix_qfsinf_exit: | |
4128 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); | |
4129 | return rc; | |
4130 | } | |
2d304217 | 4131 | |
6fc05c25 PS |
4132 | int |
4133 | SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon, | |
4134 | u64 persistent_fid, u64 volatile_fid, struct kstatfs *fsdata) | |
4135 | { | |
40eff45b | 4136 | struct smb_rqst rqst; |
6fc05c25 PS |
4137 | struct smb2_query_info_rsp *rsp = NULL; |
4138 | struct kvec iov; | |
da502f7d | 4139 | struct kvec rsp_iov; |
6fc05c25 PS |
4140 | int rc = 0; |
4141 | int resp_buftype; | |
4142 | struct cifs_ses *ses = tcon->ses; | |
4143 | struct smb2_fs_full_size_info *info = NULL; | |
7fb8986e | 4144 | int flags = 0; |
6fc05c25 PS |
4145 | |
4146 | rc = build_qfs_info_req(&iov, tcon, FS_FULL_SIZE_INFORMATION, | |
4147 | sizeof(struct smb2_fs_full_size_info), | |
4148 | persistent_fid, volatile_fid); | |
4149 | if (rc) | |
4150 | return rc; | |
4151 | ||
5a77e75f | 4152 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
4153 | flags |= CIFS_TRANSFORM_REQ; |
4154 | ||
40eff45b RS |
4155 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
4156 | rqst.rq_iov = &iov; | |
4157 | rqst.rq_nvec = 1; | |
4158 | ||
4159 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d | 4160 | cifs_small_buf_release(iov.iov_base); |
6fc05c25 PS |
4161 | if (rc) { |
4162 | cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); | |
34f62640 | 4163 | goto qfsinf_exit; |
6fc05c25 | 4164 | } |
da502f7d | 4165 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; |
6fc05c25 | 4166 | |
1fc6ad2f | 4167 | info = (struct smb2_fs_full_size_info *)( |
49f466bd | 4168 | le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp); |
730928c8 RS |
4169 | rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), |
4170 | le32_to_cpu(rsp->OutputBufferLength), &rsp_iov, | |
4171 | sizeof(struct smb2_fs_full_size_info)); | |
6fc05c25 | 4172 | if (!rc) |
730928c8 | 4173 | smb2_copy_fs_info_to_kstatfs(info, fsdata); |
6fc05c25 | 4174 | |
34f62640 | 4175 | qfsinf_exit: |
da502f7d | 4176 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); |
34f62640 SF |
4177 | return rc; |
4178 | } | |
4179 | ||
4180 | int | |
4181 | SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon, | |
2167114c | 4182 | u64 persistent_fid, u64 volatile_fid, int level) |
34f62640 | 4183 | { |
40eff45b | 4184 | struct smb_rqst rqst; |
34f62640 SF |
4185 | struct smb2_query_info_rsp *rsp = NULL; |
4186 | struct kvec iov; | |
da502f7d | 4187 | struct kvec rsp_iov; |
34f62640 | 4188 | int rc = 0; |
2167114c | 4189 | int resp_buftype, max_len, min_len; |
34f62640 SF |
4190 | struct cifs_ses *ses = tcon->ses; |
4191 | unsigned int rsp_len, offset; | |
7fb8986e | 4192 | int flags = 0; |
34f62640 | 4193 | |
2167114c SF |
4194 | if (level == FS_DEVICE_INFORMATION) { |
4195 | max_len = sizeof(FILE_SYSTEM_DEVICE_INFO); | |
4196 | min_len = sizeof(FILE_SYSTEM_DEVICE_INFO); | |
4197 | } else if (level == FS_ATTRIBUTE_INFORMATION) { | |
4198 | max_len = sizeof(FILE_SYSTEM_ATTRIBUTE_INFO); | |
4199 | min_len = MIN_FS_ATTR_INFO_SIZE; | |
af6a12ea SF |
4200 | } else if (level == FS_SECTOR_SIZE_INFORMATION) { |
4201 | max_len = sizeof(struct smb3_fs_ss_info); | |
4202 | min_len = sizeof(struct smb3_fs_ss_info); | |
21ba3845 SF |
4203 | } else if (level == FS_VOLUME_INFORMATION) { |
4204 | max_len = sizeof(struct smb3_fs_vol_info) + MAX_VOL_LABEL_LEN; | |
4205 | min_len = sizeof(struct smb3_fs_vol_info); | |
2167114c | 4206 | } else { |
af6a12ea | 4207 | cifs_dbg(FYI, "Invalid qfsinfo level %d\n", level); |
2167114c SF |
4208 | return -EINVAL; |
4209 | } | |
4210 | ||
4211 | rc = build_qfs_info_req(&iov, tcon, level, max_len, | |
34f62640 SF |
4212 | persistent_fid, volatile_fid); |
4213 | if (rc) | |
4214 | return rc; | |
4215 | ||
5a77e75f | 4216 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
4217 | flags |= CIFS_TRANSFORM_REQ; |
4218 | ||
40eff45b RS |
4219 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
4220 | rqst.rq_iov = &iov; | |
4221 | rqst.rq_nvec = 1; | |
4222 | ||
4223 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); | |
da502f7d | 4224 | cifs_small_buf_release(iov.iov_base); |
34f62640 SF |
4225 | if (rc) { |
4226 | cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); | |
4227 | goto qfsattr_exit; | |
4228 | } | |
da502f7d | 4229 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; |
34f62640 SF |
4230 | |
4231 | rsp_len = le32_to_cpu(rsp->OutputBufferLength); | |
4232 | offset = le16_to_cpu(rsp->OutputBufferOffset); | |
730928c8 | 4233 | rc = smb2_validate_iov(offset, rsp_len, &rsp_iov, min_len); |
2167114c SF |
4234 | if (rc) |
4235 | goto qfsattr_exit; | |
4236 | ||
4237 | if (level == FS_ATTRIBUTE_INFORMATION) | |
1fc6ad2f | 4238 | memcpy(&tcon->fsAttrInfo, offset |
49f466bd | 4239 | + (char *)rsp, min_t(unsigned int, |
2167114c SF |
4240 | rsp_len, max_len)); |
4241 | else if (level == FS_DEVICE_INFORMATION) | |
1fc6ad2f | 4242 | memcpy(&tcon->fsDevInfo, offset |
49f466bd | 4243 | + (char *)rsp, sizeof(FILE_SYSTEM_DEVICE_INFO)); |
af6a12ea SF |
4244 | else if (level == FS_SECTOR_SIZE_INFORMATION) { |
4245 | struct smb3_fs_ss_info *ss_info = (struct smb3_fs_ss_info *) | |
1fc6ad2f | 4246 | (offset + (char *)rsp); |
af6a12ea SF |
4247 | tcon->ss_flags = le32_to_cpu(ss_info->Flags); |
4248 | tcon->perf_sector_size = | |
4249 | le32_to_cpu(ss_info->PhysicalBytesPerSectorForPerf); | |
21ba3845 SF |
4250 | } else if (level == FS_VOLUME_INFORMATION) { |
4251 | struct smb3_fs_vol_info *vol_info = (struct smb3_fs_vol_info *) | |
4252 | (offset + (char *)rsp); | |
4253 | tcon->vol_serial_number = vol_info->VolumeSerialNumber; | |
4254 | tcon->vol_create_time = vol_info->VolumeCreationTime; | |
af6a12ea | 4255 | } |
34f62640 SF |
4256 | |
4257 | qfsattr_exit: | |
da502f7d | 4258 | free_rsp_buf(resp_buftype, rsp_iov.iov_base); |
6fc05c25 PS |
4259 | return rc; |
4260 | } | |
f7ba7fe6 PS |
4261 | |
4262 | int | |
4263 | smb2_lockv(const unsigned int xid, struct cifs_tcon *tcon, | |
4264 | const __u64 persist_fid, const __u64 volatile_fid, const __u32 pid, | |
4265 | const __u32 num_lock, struct smb2_lock_element *buf) | |
4266 | { | |
40eff45b | 4267 | struct smb_rqst rqst; |
f7ba7fe6 PS |
4268 | int rc = 0; |
4269 | struct smb2_lock_req *req = NULL; | |
4270 | struct kvec iov[2]; | |
da502f7d | 4271 | struct kvec rsp_iov; |
f7ba7fe6 PS |
4272 | int resp_buf_type; |
4273 | unsigned int count; | |
7fb8986e | 4274 | int flags = CIFS_NO_RESP; |
ced93679 | 4275 | unsigned int total_len; |
f7ba7fe6 | 4276 | |
f96637be | 4277 | cifs_dbg(FYI, "smb2_lockv num lock %d\n", num_lock); |
f7ba7fe6 | 4278 | |
ced93679 | 4279 | rc = smb2_plain_req_init(SMB2_LOCK, tcon, (void **) &req, &total_len); |
f7ba7fe6 PS |
4280 | if (rc) |
4281 | return rc; | |
4282 | ||
5a77e75f | 4283 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
4284 | flags |= CIFS_TRANSFORM_REQ; |
4285 | ||
ced93679 | 4286 | req->sync_hdr.ProcessId = cpu_to_le32(pid); |
f7ba7fe6 PS |
4287 | req->LockCount = cpu_to_le16(num_lock); |
4288 | ||
4289 | req->PersistentFileId = persist_fid; | |
4290 | req->VolatileFileId = volatile_fid; | |
4291 | ||
4292 | count = num_lock * sizeof(struct smb2_lock_element); | |
f7ba7fe6 PS |
4293 | |
4294 | iov[0].iov_base = (char *)req; | |
ced93679 | 4295 | iov[0].iov_len = total_len - sizeof(struct smb2_lock_element); |
f7ba7fe6 PS |
4296 | iov[1].iov_base = (char *)buf; |
4297 | iov[1].iov_len = count; | |
4298 | ||
4299 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); | |
40eff45b RS |
4300 | |
4301 | memset(&rqst, 0, sizeof(struct smb_rqst)); | |
4302 | rqst.rq_iov = iov; | |
4303 | rqst.rq_nvec = 2; | |
4304 | ||
4305 | rc = cifs_send_recv(xid, tcon->ses, &rqst, &resp_buf_type, flags, | |
ced93679 | 4306 | &rsp_iov); |
da502f7d | 4307 | cifs_small_buf_release(req); |
f7ba7fe6 | 4308 | if (rc) { |
f96637be | 4309 | cifs_dbg(FYI, "Send error in smb2_lockv = %d\n", rc); |
f7ba7fe6 | 4310 | cifs_stats_fail_inc(tcon, SMB2_LOCK_HE); |
eccb4422 SF |
4311 | trace_smb3_lock_err(xid, persist_fid, tcon->tid, |
4312 | tcon->ses->Suid, rc); | |
f7ba7fe6 PS |
4313 | } |
4314 | ||
4315 | return rc; | |
4316 | } | |
4317 | ||
4318 | int | |
4319 | SMB2_lock(const unsigned int xid, struct cifs_tcon *tcon, | |
4320 | const __u64 persist_fid, const __u64 volatile_fid, const __u32 pid, | |
4321 | const __u64 length, const __u64 offset, const __u32 lock_flags, | |
4322 | const bool wait) | |
4323 | { | |
4324 | struct smb2_lock_element lock; | |
4325 | ||
4326 | lock.Offset = cpu_to_le64(offset); | |
4327 | lock.Length = cpu_to_le64(length); | |
4328 | lock.Flags = cpu_to_le32(lock_flags); | |
4329 | if (!wait && lock_flags != SMB2_LOCKFLAG_UNLOCK) | |
4330 | lock.Flags |= cpu_to_le32(SMB2_LOCKFLAG_FAIL_IMMEDIATELY); | |
4331 | ||
4332 | return smb2_lockv(xid, tcon, persist_fid, volatile_fid, pid, 1, &lock); | |
4333 | } | |
0822f514 PS |
4334 | |
4335 | int | |
4336 | SMB2_lease_break(const unsigned int xid, struct cifs_tcon *tcon, | |
4337 | __u8 *lease_key, const __le32 lease_state) | |
4338 | { | |
40eff45b | 4339 | struct smb_rqst rqst; |
0822f514 PS |
4340 | int rc; |
4341 | struct smb2_lease_ack *req = NULL; | |
8eb7998e | 4342 | struct cifs_ses *ses = tcon->ses; |
7fb8986e | 4343 | int flags = CIFS_OBREAK_OP; |
8eb7998e RS |
4344 | unsigned int total_len; |
4345 | struct kvec iov[1]; | |
4346 | struct kvec rsp_iov; | |
4347 | int resp_buf_type; | |
0822f514 | 4348 | |
f96637be | 4349 | cifs_dbg(FYI, "SMB2_lease_break\n"); |
8eb7998e RS |
4350 | rc = smb2_plain_req_init(SMB2_OPLOCK_BREAK, tcon, (void **) &req, |
4351 | &total_len); | |
0822f514 PS |
4352 | if (rc) |
4353 | return rc; | |
4354 | ||
5a77e75f | 4355 | if (smb3_encryption_required(tcon)) |
7fb8986e PS |
4356 | flags |= CIFS_TRANSFORM_REQ; |
4357 | ||
8eb7998e | 4358 | req->sync_hdr.CreditRequest = cpu_to_le16(1); |
0822f514 | 4359 | req->StructureSize = cpu_to_le16(36); |
8eb7998e | 4360 | total_len += 12; |
0822f514 PS |
4361 | |
4362 | memcpy(req->LeaseKey, lease_key, 16); | |
4363 | req->LeaseState = lease_state; | |
4364 | ||
8eb7998e RS |
4365 | flags |= CIFS_NO_RESP; |
4366 | ||
4367 | iov[0].iov_base = (char *)req; | |
4368 | iov[0].iov_len = total_len; | |
4369 | ||
40eff45b RS |
4370 | memset(&rqst, 0, sizeof(struct smb_rqst)); |
4371 | rqst.rq_iov = iov; | |
4372 | rqst.rq_nvec = 1; | |
4373 | ||
4374 | rc = cifs_send_recv(xid, ses, &rqst, &resp_buf_type, flags, &rsp_iov); | |
da502f7d | 4375 | cifs_small_buf_release(req); |
0822f514 PS |
4376 | |
4377 | if (rc) { | |
4378 | cifs_stats_fail_inc(tcon, SMB2_OPLOCK_BREAK_HE); | |
f96637be | 4379 | cifs_dbg(FYI, "Send error in Lease Break = %d\n", rc); |
0822f514 PS |
4380 | } |
4381 | ||
4382 | return rc; | |
4383 | } |