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Merge tag 'efi-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into...
[mirror_ubuntu-artful-kernel.git] / fs / cifs / smb2ops.c
CommitLineData
1080ef75
SF		 1/*
2 * SMB2 version specific operations
3 *
4 * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
5 *
6 * This library is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License v2 as published
8 * by the Free Software Foundation.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
3a3bab50 20#include <linux/pagemap.h>
6fc05c25 21#include <linux/vfs.h>
f29ebb47 22#include <linux/falloc.h>
026e93dc
PS		 23#include <linux/scatterlist.h>
24#include <crypto/aead.h>
1080ef75 25#include "cifsglob.h"
2dc7e1c0
PS		 26#include "smb2pdu.h"
27#include "smb2proto.h"
28ea5290
PS		 28#include "cifsproto.h"
29#include "cifs_debug.h"
b42bf888 30#include "cifs_unicode.h"
2e44b288 31#include "smb2status.h"
6fc05c25 32#include "smb2glob.h"
834170c8 33#include "cifs_ioctl.h"
28ea5290
PS		 34
35static int
36change_conf(struct TCP_Server_Info *server)
37{
38 server->credits += server->echo_credits + server->oplock_credits;
39 server->oplock_credits = server->echo_credits = 0;
40 switch (server->credits) {
41 case 0:
42 return -1;
43 case 1:
44 server->echoes = false;
45 server->oplocks = false;
f96637be 46 cifs_dbg(VFS, "disabling echoes and oplocks\n");
28ea5290
PS		 47 break;
48 case 2:
49 server->echoes = true;
50 server->oplocks = false;
51 server->echo_credits = 1;
f96637be 52 cifs_dbg(FYI, "disabling oplocks\n");
28ea5290
PS		 53 break;
54 default:
55 server->echoes = true;
e0ddde9d
SF		 56 if (enable_oplocks) {
57 server->oplocks = true;
58 server->oplock_credits = 1;
59 } else
60 server->oplocks = false;
61
28ea5290 62 server->echo_credits = 1;
28ea5290
PS		 63 }
64 server->credits -= server->echo_credits + server->oplock_credits;
65 return 0;
66}
67
68static void
69smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
70 const int optype)
71{
72 int *val, rc = 0;
73 spin_lock(&server->req_lock);
74 val = server->ops->get_credits_field(server, optype);
75 *val += add;
141891f4
SF		 76 if (*val > 65000) {
77 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
78 printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
79 }
28ea5290 80 server->in_flight--;
ec2e4523 81 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
28ea5290 82 rc = change_conf(server);
983c88a4
PS		 83 /*
84 * Sometimes server returns 0 credits on oplock break ack - we need to
85 * rebalance credits in this case.
86 */
87 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
88 server->oplocks) {
89 if (server->credits > 1) {
90 server->credits--;
91 server->oplock_credits++;
92 }
93 }
28ea5290
PS		 94 spin_unlock(&server->req_lock);
95 wake_up(&server->request_q);
96 if (rc)
97 cifs_reconnect(server);
98}
99
100static void
101smb2_set_credits(struct TCP_Server_Info *server, const int val)
102{
103 spin_lock(&server->req_lock);
104 server->credits = val;
105 spin_unlock(&server->req_lock);
106}
107
108static int *
109smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
110{
111 switch (optype) {
112 case CIFS_ECHO_OP:
113 return &server->echo_credits;
114 case CIFS_OBREAK_OP:
115 return &server->oplock_credits;
116 default:
117 return &server->credits;
118 }
119}
120
121static unsigned int
122smb2_get_credits(struct mid_q_entry *mid)
123{
31473fc4
PS		 124 struct smb2_sync_hdr *shdr = get_sync_hdr(mid->resp_buf);
125
126 return le16_to_cpu(shdr->CreditRequest);
28ea5290 127}
2dc7e1c0 128
cb7e9eab
PS		 129static int
130smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
131 unsigned int *num, unsigned int *credits)
132{
133 int rc = 0;
134 unsigned int scredits;
135
136 spin_lock(&server->req_lock);
137 while (1) {
138 if (server->credits <= 0) {
139 spin_unlock(&server->req_lock);
140 cifs_num_waiters_inc(server);
141 rc = wait_event_killable(server->request_q,
142 has_credits(server, &server->credits));
143 cifs_num_waiters_dec(server);
144 if (rc)
145 return rc;
146 spin_lock(&server->req_lock);
147 } else {
148 if (server->tcpStatus == CifsExiting) {
149 spin_unlock(&server->req_lock);
150 return -ENOENT;
151 }
152
153 scredits = server->credits;
154 /* can deadlock with reopen */
155 if (scredits == 1) {
156 *num = SMB2_MAX_BUFFER_SIZE;
157 *credits = 0;
158 break;
159 }
160
161 /* leave one credit for a possible reopen */
162 scredits--;
163 *num = min_t(unsigned int, size,
164 scredits * SMB2_MAX_BUFFER_SIZE);
165
166 *credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
167 server->credits -= *credits;
168 server->in_flight++;
169 break;
170 }
171 }
172 spin_unlock(&server->req_lock);
173 return rc;
174}
175
2dc7e1c0
PS		 176static __u64
177smb2_get_next_mid(struct TCP_Server_Info *server)
178{
179 __u64 mid;
180 /* for SMB2 we need the current value */
181 spin_lock(&GlobalMid_Lock);
182 mid = server->CurrentMid++;
183 spin_unlock(&GlobalMid_Lock);
184 return mid;
185}
1080ef75 186
093b2bda
PS		 187static struct mid_q_entry *
188smb2_find_mid(struct TCP_Server_Info *server, char *buf)
189{
190 struct mid_q_entry *mid;
31473fc4
PS		 191 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
192 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
093b2bda 193
31473fc4 194 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
373512ec
SF		 195 cifs_dbg(VFS, "encrypted frame parsing not supported yet");
196 return NULL;
197 }
198
093b2bda
PS		 199 spin_lock(&GlobalMid_Lock);
200 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
9235d098 201 if ((mid->mid == wire_mid) &&
093b2bda 202 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
31473fc4 203 (mid->command == shdr->Command)) {
093b2bda
PS		 204 spin_unlock(&GlobalMid_Lock);
205 return mid;
206 }
207 }
208 spin_unlock(&GlobalMid_Lock);
209 return NULL;
210}
211
212static void
213smb2_dump_detail(void *buf)
214{
215#ifdef CONFIG_CIFS_DEBUG2
31473fc4 216 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
093b2bda 217
f96637be 218 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
31473fc4
PS		 219 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
220 shdr->ProcessId);
221 cifs_dbg(VFS, "smb buf %p len %u\n", buf, smb2_calc_size(buf));
093b2bda
PS		 222#endif
223}
224
ec2e4523
PS		 225static bool
226smb2_need_neg(struct TCP_Server_Info *server)
227{
228 return server->max_read == 0;
229}
230
231static int
232smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
233{
234 int rc;
235 ses->server->CurrentMid = 0;
236 rc = SMB2_negotiate(xid, ses);
237 /* BB we probably don't need to retry with modern servers */
238 if (rc == -EAGAIN)
239 rc = -EHOSTDOWN;
240 return rc;
241}
242
3a3bab50
PS		 243static unsigned int
244smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
245{
246 struct TCP_Server_Info *server = tcon->ses->server;
247 unsigned int wsize;
248
249 /* start with specified wsize, or default */
250 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
251 wsize = min_t(unsigned int, wsize, server->max_write);
cb7e9eab
PS		 252
253 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
254 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 255
3a3bab50
PS		 256 return wsize;
257}
258
259static unsigned int
260smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
261{
262 struct TCP_Server_Info *server = tcon->ses->server;
263 unsigned int rsize;
264
265 /* start with specified rsize, or default */
266 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
267 rsize = min_t(unsigned int, rsize, server->max_read);
bed9da02
PS		 268
269 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
270 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 271
3a3bab50
PS		 272 return rsize;
273}
274
c481e9fe
SF		 275#ifdef CONFIG_CIFS_STATS2
276static int
277SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
278{
279 int rc;
280 unsigned int ret_data_len = 0;
281 struct network_interface_info_ioctl_rsp *out_buf;
282
283 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
284 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
51146625 285 false /* use_ipc */,
c481e9fe
SF		 286 NULL /* no data input */, 0 /* no data input */,
287 (char **)&out_buf, &ret_data_len);
9ffc5412
SF		 288 if (rc != 0)
289 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
290 else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) {
291 cifs_dbg(VFS, "server returned bad net interface info buf\n");
292 rc = -EINVAL;
293 } else {
c481e9fe
SF		 294 /* Dump info on first interface */
295 cifs_dbg(FYI, "Adapter Capability 0x%x\t",
296 le32_to_cpu(out_buf->Capability));
297 cifs_dbg(FYI, "Link Speed %lld\n",
298 le64_to_cpu(out_buf->LinkSpeed));
9ffc5412 299 }
24df1483 300 kfree(out_buf);
c481e9fe
SF		 301 return rc;
302}
303#endif /* STATS2 */
304
af6a12ea
SF		 305static void
306smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
307{
308 int rc;
309 __le16 srch_path = 0; /* Null - open root of share */
310 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
311 struct cifs_open_parms oparms;
312 struct cifs_fid fid;
313
314 oparms.tcon = tcon;
315 oparms.desired_access = FILE_READ_ATTRIBUTES;
316 oparms.disposition = FILE_OPEN;
317 oparms.create_options = 0;
318 oparms.fid = &fid;
319 oparms.reconnect = false;
320
321 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
322 if (rc)
323 return;
324
c481e9fe
SF		 325#ifdef CONFIG_CIFS_STATS2
326 SMB3_request_interfaces(xid, tcon);
327#endif /* STATS2 */
328
af6a12ea
SF		 329 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
330 FS_ATTRIBUTE_INFORMATION);
331 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
332 FS_DEVICE_INFORMATION);
333 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
334 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
335 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
336 return;
337}
338
34f62640
SF		 339static void
340smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
341{
342 int rc;
343 __le16 srch_path = 0; /* Null - open root of share */
344 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
345 struct cifs_open_parms oparms;
346 struct cifs_fid fid;
347
348 oparms.tcon = tcon;
349 oparms.desired_access = FILE_READ_ATTRIBUTES;
350 oparms.disposition = FILE_OPEN;
351 oparms.create_options = 0;
352 oparms.fid = &fid;
353 oparms.reconnect = false;
354
355 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
356 if (rc)
357 return;
358
2167114c
SF		 359 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
360 FS_ATTRIBUTE_INFORMATION);
361 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
362 FS_DEVICE_INFORMATION);
34f62640
SF		 363 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
364 return;
365}
366
2503a0db
PS		 367static int
368smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
369 struct cifs_sb_info *cifs_sb, const char *full_path)
370{
371 int rc;
2503a0db 372 __le16 *utf16_path;
2e44b288 373 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 374 struct cifs_open_parms oparms;
375 struct cifs_fid fid;
2503a0db
PS		 376
377 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
378 if (!utf16_path)
379 return -ENOMEM;
380
064f6047
PS		 381 oparms.tcon = tcon;
382 oparms.desired_access = FILE_READ_ATTRIBUTES;
383 oparms.disposition = FILE_OPEN;
384 oparms.create_options = 0;
385 oparms.fid = &fid;
9cbc0b73 386 oparms.reconnect = false;
064f6047 387
b42bf888 388 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
2503a0db
PS		 389 if (rc) {
390 kfree(utf16_path);
391 return rc;
392 }
393
064f6047 394 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2503a0db
PS		 395 kfree(utf16_path);
396 return rc;
397}
398
be4cb9e3
PS		 399static int
400smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
401 struct cifs_sb_info *cifs_sb, const char *full_path,
402 u64 *uniqueid, FILE_ALL_INFO *data)
403{
404 *uniqueid = le64_to_cpu(data->IndexNumber);
405 return 0;
406}
407
b7546bc5
PS		 408static int
409smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
410 struct cifs_fid *fid, FILE_ALL_INFO *data)
411{
412 int rc;
413 struct smb2_file_all_info *smb2_data;
414
1bbe4997 415 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
b7546bc5
PS		 416 GFP_KERNEL);
417 if (smb2_data == NULL)
418 return -ENOMEM;
419
420 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
421 smb2_data);
422 if (!rc)
423 move_smb2_info_to_cifs(data, smb2_data);
424 kfree(smb2_data);
425 return rc;
426}
427
9094fad1
PS		 428static bool
429smb2_can_echo(struct TCP_Server_Info *server)
430{
431 return server->echoes;
432}
433
d60622eb
PS		 434static void
435smb2_clear_stats(struct cifs_tcon *tcon)
436{
437#ifdef CONFIG_CIFS_STATS
438 int i;
439 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
440 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
441 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
442 }
443#endif
444}
445
769ee6a4
SF		 446static void
447smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
448{
449 seq_puts(m, "\n\tShare Capabilities:");
450 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
451 seq_puts(m, " DFS,");
452 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
453 seq_puts(m, " CONTINUOUS AVAILABILITY,");
454 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
455 seq_puts(m, " SCALEOUT,");
456 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
457 seq_puts(m, " CLUSTER,");
458 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
459 seq_puts(m, " ASYMMETRIC,");
460 if (tcon->capabilities == 0)
461 seq_puts(m, " None");
af6a12ea
SF		 462 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
463 seq_puts(m, " Aligned,");
464 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
465 seq_puts(m, " Partition Aligned,");
466 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
467 seq_puts(m, " SSD,");
468 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
469 seq_puts(m, " TRIM-support,");
470
769ee6a4 471 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
af6a12ea
SF		 472 if (tcon->perf_sector_size)
473 seq_printf(m, "\tOptimal sector size: 0x%x",
474 tcon->perf_sector_size);
769ee6a4
SF		 475}
476
d60622eb
PS		 477static void
478smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
479{
480#ifdef CONFIG_CIFS_STATS
481 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
482 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
483 seq_printf(m, "\nNegotiates: %d sent %d failed",
484 atomic_read(&sent[SMB2_NEGOTIATE_HE]),
485 atomic_read(&failed[SMB2_NEGOTIATE_HE]));
486 seq_printf(m, "\nSessionSetups: %d sent %d failed",
487 atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
488 atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
d60622eb
PS		 489 seq_printf(m, "\nLogoffs: %d sent %d failed",
490 atomic_read(&sent[SMB2_LOGOFF_HE]),
491 atomic_read(&failed[SMB2_LOGOFF_HE]));
492 seq_printf(m, "\nTreeConnects: %d sent %d failed",
493 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
494 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
495 seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
496 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
497 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
498 seq_printf(m, "\nCreates: %d sent %d failed",
499 atomic_read(&sent[SMB2_CREATE_HE]),
500 atomic_read(&failed[SMB2_CREATE_HE]));
501 seq_printf(m, "\nCloses: %d sent %d failed",
502 atomic_read(&sent[SMB2_CLOSE_HE]),
503 atomic_read(&failed[SMB2_CLOSE_HE]));
504 seq_printf(m, "\nFlushes: %d sent %d failed",
505 atomic_read(&sent[SMB2_FLUSH_HE]),
506 atomic_read(&failed[SMB2_FLUSH_HE]));
507 seq_printf(m, "\nReads: %d sent %d failed",
508 atomic_read(&sent[SMB2_READ_HE]),
509 atomic_read(&failed[SMB2_READ_HE]));
510 seq_printf(m, "\nWrites: %d sent %d failed",
511 atomic_read(&sent[SMB2_WRITE_HE]),
512 atomic_read(&failed[SMB2_WRITE_HE]));
513 seq_printf(m, "\nLocks: %d sent %d failed",
514 atomic_read(&sent[SMB2_LOCK_HE]),
515 atomic_read(&failed[SMB2_LOCK_HE]));
516 seq_printf(m, "\nIOCTLs: %d sent %d failed",
517 atomic_read(&sent[SMB2_IOCTL_HE]),
518 atomic_read(&failed[SMB2_IOCTL_HE]));
519 seq_printf(m, "\nCancels: %d sent %d failed",
520 atomic_read(&sent[SMB2_CANCEL_HE]),
521 atomic_read(&failed[SMB2_CANCEL_HE]));
522 seq_printf(m, "\nEchos: %d sent %d failed",
523 atomic_read(&sent[SMB2_ECHO_HE]),
524 atomic_read(&failed[SMB2_ECHO_HE]));
525 seq_printf(m, "\nQueryDirectories: %d sent %d failed",
526 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
527 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
528 seq_printf(m, "\nChangeNotifies: %d sent %d failed",
529 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
530 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
531 seq_printf(m, "\nQueryInfos: %d sent %d failed",
532 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
533 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
534 seq_printf(m, "\nSetInfos: %d sent %d failed",
535 atomic_read(&sent[SMB2_SET_INFO_HE]),
536 atomic_read(&failed[SMB2_SET_INFO_HE]));
537 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
538 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
539 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
540#endif
541}
542
f0df737e
PS		 543static void
544smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
545{
2b0143b5 546 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
53ef1016
PS		 547 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
548
f0df737e
PS		 549 cfile->fid.persistent_fid = fid->persistent_fid;
550 cfile->fid.volatile_fid = fid->volatile_fid;
42873b0a
PS		 551 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
552 &fid->purge_cache);
18cceb6a 553 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
94f87371 554 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
f0df737e
PS		 555}
556
760ad0ca 557static void
f0df737e
PS		 558smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
559 struct cifs_fid *fid)
560{
760ad0ca 561 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
f0df737e
PS		 562}
563
41c1358e
SF		 564static int
565SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
566 u64 persistent_fid, u64 volatile_fid,
567 struct copychunk_ioctl *pcchunk)
568{
569 int rc;
570 unsigned int ret_data_len;
571 struct resume_key_req *res_key;
572
573 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
574 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
51146625 575 false /* use_ipc */,
41c1358e
SF		 576 NULL, 0 /* no input */,
577 (char **)&res_key, &ret_data_len);
578
579 if (rc) {
580 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
581 goto req_res_key_exit;
582 }
583 if (ret_data_len < sizeof(struct resume_key_req)) {
584 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
585 rc = -EINVAL;
586 goto req_res_key_exit;
587 }
588 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
589
590req_res_key_exit:
591 kfree(res_key);
592 return rc;
593}
594
595static int
596smb2_clone_range(const unsigned int xid,
597 struct cifsFileInfo *srcfile,
598 struct cifsFileInfo *trgtfile, u64 src_off,
599 u64 len, u64 dest_off)
600{
601 int rc;
602 unsigned int ret_data_len;
603 struct copychunk_ioctl *pcchunk;
9bf0c9cd
SF		 604 struct copychunk_ioctl_rsp *retbuf = NULL;
605 struct cifs_tcon *tcon;
606 int chunks_copied = 0;
607 bool chunk_sizes_updated = false;
41c1358e
SF		 608
609 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
610
611 if (pcchunk == NULL)
612 return -ENOMEM;
613
614 cifs_dbg(FYI, "in smb2_clone_range - about to call request res key\n");
615 /* Request a key from the server to identify the source of the copy */
616 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
617 srcfile->fid.persistent_fid,
618 srcfile->fid.volatile_fid, pcchunk);
619
620 /* Note: request_res_key sets res_key null only if rc !=0 */
621 if (rc)
9bf0c9cd 622 goto cchunk_out;
41c1358e
SF		 623
624 /* For now array only one chunk long, will make more flexible later */
bc09d141 625 pcchunk->ChunkCount = cpu_to_le32(1);
41c1358e 626 pcchunk->Reserved = 0;
41c1358e
SF		 627 pcchunk->Reserved2 = 0;
628
9bf0c9cd 629 tcon = tlink_tcon(trgtfile->tlink);
41c1358e 630
9bf0c9cd
SF		 631 while (len > 0) {
632 pcchunk->SourceOffset = cpu_to_le64(src_off);
633 pcchunk->TargetOffset = cpu_to_le64(dest_off);
634 pcchunk->Length =
635 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
41c1358e 636
9bf0c9cd
SF		 637 /* Request server copy to target from src identified by key */
638 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
639 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
51146625
AA		 640 true /* is_fsctl */, false /* use_ipc */,
641 (char *)pcchunk,
9bf0c9cd
SF		 642 sizeof(struct copychunk_ioctl), (char **)&retbuf,
643 &ret_data_len);
644 if (rc == 0) {
645 if (ret_data_len !=
646 sizeof(struct copychunk_ioctl_rsp)) {
647 cifs_dbg(VFS, "invalid cchunk response size\n");
648 rc = -EIO;
649 goto cchunk_out;
650 }
651 if (retbuf->TotalBytesWritten == 0) {
652 cifs_dbg(FYI, "no bytes copied\n");
653 rc = -EIO;
654 goto cchunk_out;
655 }
656 /*
657 * Check if server claimed to write more than we asked
658 */
659 if (le32_to_cpu(retbuf->TotalBytesWritten) >
660 le32_to_cpu(pcchunk->Length)) {
661 cifs_dbg(VFS, "invalid copy chunk response\n");
662 rc = -EIO;
663 goto cchunk_out;
664 }
665 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
666 cifs_dbg(VFS, "invalid num chunks written\n");
667 rc = -EIO;
668 goto cchunk_out;
669 }
670 chunks_copied++;
671
672 src_off += le32_to_cpu(retbuf->TotalBytesWritten);
673 dest_off += le32_to_cpu(retbuf->TotalBytesWritten);
674 len -= le32_to_cpu(retbuf->TotalBytesWritten);
675
676 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %d\n",
677 le32_to_cpu(retbuf->ChunksWritten),
678 le32_to_cpu(retbuf->ChunkBytesWritten),
679 le32_to_cpu(retbuf->TotalBytesWritten));
680 } else if (rc == -EINVAL) {
681 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
682 goto cchunk_out;
683
684 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
685 le32_to_cpu(retbuf->ChunksWritten),
686 le32_to_cpu(retbuf->ChunkBytesWritten),
687 le32_to_cpu(retbuf->TotalBytesWritten));
688
689 /*
690 * Check if this is the first request using these sizes,
691 * (ie check if copy succeed once with original sizes
692 * and check if the server gave us different sizes after
693 * we already updated max sizes on previous request).
694 * if not then why is the server returning an error now
695 */
696 if ((chunks_copied != 0) || chunk_sizes_updated)
697 goto cchunk_out;
698
699 /* Check that server is not asking us to grow size */
700 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
701 tcon->max_bytes_chunk)
702 tcon->max_bytes_chunk =
703 le32_to_cpu(retbuf->ChunkBytesWritten);
704 else
705 goto cchunk_out; /* server gave us bogus size */
706
707 /* No need to change MaxChunks since already set to 1 */
708 chunk_sizes_updated = true;
2477bc58
SP		 709 } else
710 goto cchunk_out;
9bf0c9cd 711 }
41c1358e 712
9bf0c9cd 713cchunk_out:
41c1358e 714 kfree(pcchunk);
24df1483 715 kfree(retbuf);
41c1358e
SF		 716 return rc;
717}
718
7a5cfb19
PS		 719static int
720smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
721 struct cifs_fid *fid)
722{
723 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
724}
725
09a4707e
PS		 726static unsigned int
727smb2_read_data_offset(char *buf)
728{
729 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
730 return rsp->DataOffset;
731}
732
733static unsigned int
734smb2_read_data_length(char *buf)
735{
736 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
737 return le32_to_cpu(rsp->DataLength);
738}
739
d8e05039
PS		 740
741static int
db8b631d 742smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
d8e05039
PS		 743 struct cifs_io_parms *parms, unsigned int *bytes_read,
744 char **buf, int *buf_type)
745{
db8b631d
SF		 746 parms->persistent_fid = pfid->persistent_fid;
747 parms->volatile_fid = pfid->volatile_fid;
d8e05039
PS		 748 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
749}
750
009d3443 751static int
db8b631d 752smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
009d3443
PS		 753 struct cifs_io_parms *parms, unsigned int *written,
754 struct kvec *iov, unsigned long nr_segs)
755{
756
db8b631d
SF		 757 parms->persistent_fid = pfid->persistent_fid;
758 parms->volatile_fid = pfid->volatile_fid;
009d3443
PS		 759 return SMB2_write(xid, parms, written, iov, nr_segs);
760}
761
d43cc793
SF		 762/* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
763static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
764 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
765{
766 struct cifsInodeInfo *cifsi;
767 int rc;
768
769 cifsi = CIFS_I(inode);
770
771 /* if file already sparse don't bother setting sparse again */
772 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
773 return true; /* already sparse */
774
775 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
776 return true; /* already not sparse */
777
778 /*
779 * Can't check for sparse support on share the usual way via the
780 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
781 * since Samba server doesn't set the flag on the share, yet
782 * supports the set sparse FSCTL and returns sparse correctly
783 * in the file attributes. If we fail setting sparse though we
784 * mark that server does not support sparse files for this share
785 * to avoid repeatedly sending the unsupported fsctl to server
786 * if the file is repeatedly extended.
787 */
788 if (tcon->broken_sparse_sup)
789 return false;
790
791 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
792 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
51146625
AA		 793 true /* is_fctl */, false /* use_ipc */,
794 &setsparse, 1, NULL, NULL);
d43cc793
SF		 795 if (rc) {
796 tcon->broken_sparse_sup = true;
797 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
798 return false;
799 }
800
801 if (setsparse)
802 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
803 else
804 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
805
806 return true;
807}
808
c839ff24
PS		 809static int
810smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
811 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
812{
813 __le64 eof = cpu_to_le64(size);
3d1a3745
SF		 814 struct inode *inode;
815
816 /*
817 * If extending file more than one page make sparse. Many Linux fs
818 * make files sparse by default when extending via ftruncate
819 */
2b0143b5 820 inode = d_inode(cfile->dentry);
3d1a3745
SF		 821
822 if (!set_alloc && (size > inode->i_size + 8192)) {
3d1a3745 823 __u8 set_sparse = 1;
d43cc793
SF		 824
825 /* whether set sparse succeeds or not, extend the file */
826 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
3d1a3745
SF		 827 }
828
c839ff24 829 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
f29ebb47 830 cfile->fid.volatile_fid, cfile->pid, &eof, false);
c839ff24
PS		 831}
832
02b16665
SF		 833static int
834smb2_duplicate_extents(const unsigned int xid,
835 struct cifsFileInfo *srcfile,
836 struct cifsFileInfo *trgtfile, u64 src_off,
837 u64 len, u64 dest_off)
838{
839 int rc;
840 unsigned int ret_data_len;
02b16665
SF		 841 struct duplicate_extents_to_file dup_ext_buf;
842 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
843
844 /* server fileays advertise duplicate extent support with this flag */
845 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
846 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
847 return -EOPNOTSUPP;
848
849 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
850 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
851 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
852 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
853 dup_ext_buf.ByteCount = cpu_to_le64(len);
854 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
855 src_off, dest_off, len);
856
857 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
858 if (rc)
859 goto duplicate_extents_out;
860
861 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
862 trgtfile->fid.volatile_fid,
863 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
51146625
AA		 864 true /* is_fsctl */, false /* use_ipc */,
865 (char *)&dup_ext_buf,
02b16665 866 sizeof(struct duplicate_extents_to_file),
24df1483 867 NULL,
02b16665
SF		 868 &ret_data_len);
869
870 if (ret_data_len > 0)
871 cifs_dbg(FYI, "non-zero response length in duplicate extents");
872
873duplicate_extents_out:
874 return rc;
875}
02b16665 876
64a5cfa6
SF		 877static int
878smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
879 struct cifsFileInfo *cfile)
880{
881 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
882 cfile->fid.volatile_fid);
883}
884
b3152e2c
SF		 885static int
886smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
887 struct cifsFileInfo *cfile)
888{
889 struct fsctl_set_integrity_information_req integr_info;
b3152e2c
SF		 890 unsigned int ret_data_len;
891
892 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
893 integr_info.Flags = 0;
894 integr_info.Reserved = 0;
895
896 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
897 cfile->fid.volatile_fid,
898 FSCTL_SET_INTEGRITY_INFORMATION,
51146625
AA		 899 true /* is_fsctl */, false /* use_ipc */,
900 (char *)&integr_info,
b3152e2c 901 sizeof(struct fsctl_set_integrity_information_req),
24df1483 902 NULL,
b3152e2c
SF		 903 &ret_data_len);
904
905}
906
834170c8
SF		 907static int
908smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
909 struct cifsFileInfo *cfile, void __user *ioc_buf)
910{
911 char *retbuf = NULL;
912 unsigned int ret_data_len = 0;
913 int rc;
914 struct smb_snapshot_array snapshot_in;
915
916 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
917 cfile->fid.volatile_fid,
918 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
51146625
AA		 919 true /* is_fsctl */, false /* use_ipc */,
920 NULL, 0 /* no input data */,
834170c8
SF		 921 (char **)&retbuf,
922 &ret_data_len);
923 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
924 rc, ret_data_len);
925 if (rc)
926 return rc;
927
928 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
929 /* Fixup buffer */
930 if (copy_from_user(&snapshot_in, ioc_buf,
931 sizeof(struct smb_snapshot_array))) {
932 rc = -EFAULT;
933 kfree(retbuf);
934 return rc;
935 }
936 if (snapshot_in.snapshot_array_size < sizeof(struct smb_snapshot_array)) {
937 rc = -ERANGE;
938 return rc;
939 }
940
941 if (ret_data_len > snapshot_in.snapshot_array_size)
942 ret_data_len = snapshot_in.snapshot_array_size;
943
944 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
945 rc = -EFAULT;
946 }
947
948 kfree(retbuf);
949 return rc;
950}
951
d324f08d
PS		 952static int
953smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
954 const char *path, struct cifs_sb_info *cifs_sb,
955 struct cifs_fid *fid, __u16 search_flags,
956 struct cifs_search_info *srch_inf)
957{
958 __le16 *utf16_path;
959 int rc;
2e44b288 960 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047 961 struct cifs_open_parms oparms;
d324f08d
PS		 962
963 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
964 if (!utf16_path)
965 return -ENOMEM;
966
064f6047
PS		 967 oparms.tcon = tcon;
968 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
969 oparms.disposition = FILE_OPEN;
970 oparms.create_options = 0;
971 oparms.fid = fid;
9cbc0b73 972 oparms.reconnect = false;
064f6047 973
b42bf888 974 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
d324f08d
PS		 975 kfree(utf16_path);
976 if (rc) {
f96637be 977 cifs_dbg(VFS, "open dir failed\n");
d324f08d
PS		 978 return rc;
979 }
980
981 srch_inf->entries_in_buffer = 0;
982 srch_inf->index_of_last_entry = 0;
d324f08d 983
064f6047
PS		 984 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
985 fid->volatile_fid, 0, srch_inf);
d324f08d 986 if (rc) {
f96637be 987 cifs_dbg(VFS, "query directory failed\n");
064f6047 988 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
d324f08d
PS		 989 }
990 return rc;
991}
992
993static int
994smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
995 struct cifs_fid *fid, __u16 search_flags,
996 struct cifs_search_info *srch_inf)
997{
998 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
999 fid->volatile_fid, 0, srch_inf);
1000}
1001
1002static int
1003smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1004 struct cifs_fid *fid)
1005{
1006 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1007}
1008
2e44b288
PS		 1009/*
1010* If we negotiate SMB2 protocol and get STATUS_PENDING - update
1011* the number of credits and return true. Otherwise - return false.
1012*/
1013static bool
1014smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
1015{
31473fc4 1016 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
2e44b288 1017
31473fc4 1018 if (shdr->Status != STATUS_PENDING)
2e44b288
PS		 1019 return false;
1020
1021 if (!length) {
1022 spin_lock(&server->req_lock);
31473fc4 1023 server->credits += le16_to_cpu(shdr->CreditRequest);
2e44b288
PS		 1024 spin_unlock(&server->req_lock);
1025 wake_up(&server->request_q);
1026 }
1027
1028 return true;
1029}
1030
983c88a4
PS		 1031static int
1032smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1033 struct cifsInodeInfo *cinode)
1034{
0822f514
PS		 1035 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1036 return SMB2_lease_break(0, tcon, cinode->lease_key,
1037 smb2_get_lease_state(cinode));
1038
983c88a4
PS		 1039 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1040 fid->volatile_fid,
18cceb6a 1041 CIFS_CACHE_READ(cinode) ? 1 : 0);
983c88a4
PS		 1042}
1043
6fc05c25
PS		 1044static int
1045smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1046 struct kstatfs *buf)
1047{
1048 int rc;
6fc05c25
PS		 1049 __le16 srch_path = 0; /* Null - open root of share */
1050 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 1051 struct cifs_open_parms oparms;
1052 struct cifs_fid fid;
1053
1054 oparms.tcon = tcon;
1055 oparms.desired_access = FILE_READ_ATTRIBUTES;
1056 oparms.disposition = FILE_OPEN;
1057 oparms.create_options = 0;
1058 oparms.fid = &fid;
9cbc0b73 1059 oparms.reconnect = false;
6fc05c25 1060
b42bf888 1061 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
6fc05c25
PS		 1062 if (rc)
1063 return rc;
1064 buf->f_type = SMB2_MAGIC_NUMBER;
064f6047
PS		 1065 rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
1066 buf);
1067 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
6fc05c25
PS		 1068 return rc;
1069}
1070
027e8eec
PS		 1071static bool
1072smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
1073{
1074 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
1075 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
1076}
1077
f7ba7fe6
PS		 1078static int
1079smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
1080 __u64 length, __u32 type, int lock, int unlock, bool wait)
1081{
1082 if (unlock && !lock)
1083 type = SMB2_LOCKFLAG_UNLOCK;
1084 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
1085 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
1086 current->tgid, length, offset, type, wait);
1087}
1088
b8c32dbb
PS		 1089static void
1090smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
1091{
1092 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
1093}
1094
1095static void
1096smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
1097{
1098 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
1099}
1100
1101static void
1102smb2_new_lease_key(struct cifs_fid *fid)
1103{
fa70b87c 1104 generate_random_uuid(fid->lease_key);
b8c32dbb
PS		 1105}
1106
9d49640a
AA		 1107static int
1108smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
1109 const char *search_name,
1110 struct dfs_info3_param **target_nodes,
1111 unsigned int *num_of_nodes,
1112 const struct nls_table *nls_codepage, int remap)
1113{
1114 int rc;
1115 __le16 *utf16_path = NULL;
1116 int utf16_path_len = 0;
1117 struct cifs_tcon *tcon;
1118 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
1119 struct get_dfs_referral_rsp *dfs_rsp = NULL;
1120 u32 dfs_req_size = 0, dfs_rsp_size = 0;
1121
1122 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
1123
1124 /*
1125 * Use any tcon from the current session. Here, the first one.
1126 */
1127 spin_lock(&cifs_tcp_ses_lock);
1128 tcon = list_first_entry_or_null(&ses->tcon_list, struct cifs_tcon,
1129 tcon_list);
1130 if (tcon)
1131 tcon->tc_count++;
1132 spin_unlock(&cifs_tcp_ses_lock);
1133
1134 if (!tcon) {
1135 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
1136 ses);
1137 rc = -ENOTCONN;
1138 goto out;
1139 }
1140
1141 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
1142 &utf16_path_len,
1143 nls_codepage, remap);
1144 if (!utf16_path) {
1145 rc = -ENOMEM;
1146 goto out;
1147 }
1148
1149 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
1150 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
1151 if (!dfs_req) {
1152 rc = -ENOMEM;
1153 goto out;
1154 }
1155
1156 /* Highest DFS referral version understood */
1157 dfs_req->MaxReferralLevel = DFS_VERSION;
1158
1159 /* Path to resolve in an UTF-16 null-terminated string */
1160 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
1161
1162 do {
1163 /* try first with IPC */
1164 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1165 FSCTL_DFS_GET_REFERRALS,
1166 true /* is_fsctl */, true /* use_ipc */,
1167 (char *)dfs_req, dfs_req_size,
1168 (char **)&dfs_rsp, &dfs_rsp_size);
1169 if (rc == -ENOTCONN) {
1170 /* try with normal tcon */
1171 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1172 FSCTL_DFS_GET_REFERRALS,
1173 true /* is_fsctl */, false /*use_ipc*/,
1174 (char *)dfs_req, dfs_req_size,
1175 (char **)&dfs_rsp, &dfs_rsp_size);
1176 }
1177 } while (rc == -EAGAIN);
1178
1179 if (rc) {
1180 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
1181 goto out;
1182 }
1183
1184 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
1185 num_of_nodes, target_nodes,
1186 nls_codepage, remap, search_name,
1187 true /* is_unicode */);
1188 if (rc) {
1189 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
1190 goto out;
1191 }
1192
1193 out:
1194 if (tcon) {
1195 spin_lock(&cifs_tcp_ses_lock);
1196 tcon->tc_count--;
1197 spin_unlock(&cifs_tcp_ses_lock);
1198 }
1199 kfree(utf16_path);
1200 kfree(dfs_req);
1201 kfree(dfs_rsp);
1202 return rc;
1203}
7893242e
PS		 1204#define SMB2_SYMLINK_STRUCT_SIZE \
1205 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
1206
b42bf888
PS		 1207static int
1208smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
1209 const char *full_path, char **target_path,
1210 struct cifs_sb_info *cifs_sb)
1211{
1212 int rc;
1213 __le16 *utf16_path;
1214 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1215 struct cifs_open_parms oparms;
1216 struct cifs_fid fid;
1217 struct smb2_err_rsp *err_buf = NULL;
1218 struct smb2_symlink_err_rsp *symlink;
7893242e
PS		 1219 unsigned int sub_len;
1220 unsigned int sub_offset;
1221 unsigned int print_len;
1222 unsigned int print_offset;
b42bf888
PS		 1223
1224 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
1225
1226 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
1227 if (!utf16_path)
1228 return -ENOMEM;
1229
1230 oparms.tcon = tcon;
1231 oparms.desired_access = FILE_READ_ATTRIBUTES;
1232 oparms.disposition = FILE_OPEN;
1233 oparms.create_options = 0;
1234 oparms.fid = &fid;
1235 oparms.reconnect = false;
1236
1237 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf);
1238
1239 if (!rc || !err_buf) {
1240 kfree(utf16_path);
1241 return -ENOENT;
1242 }
7893242e
PS		 1243
1244 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1245 get_rfc1002_length(err_buf) + 4 < SMB2_SYMLINK_STRUCT_SIZE) {
1246 kfree(utf16_path);
1247 return -ENOENT;
1248 }
1249
b42bf888
PS		 1250 /* open must fail on symlink - reset rc */
1251 rc = 0;
1252 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
1253 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
1254 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
7893242e
PS		 1255 print_len = le16_to_cpu(symlink->PrintNameLength);
1256 print_offset = le16_to_cpu(symlink->PrintNameOffset);
1257
1258 if (get_rfc1002_length(err_buf) + 4 <
1259 SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
1260 kfree(utf16_path);
1261 return -ENOENT;
1262 }
1263
1264 if (get_rfc1002_length(err_buf) + 4 <
1265 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
1266 kfree(utf16_path);
1267 return -ENOENT;
1268 }
1269
b42bf888
PS		 1270 *target_path = cifs_strndup_from_utf16(
1271 (char *)symlink->PathBuffer + sub_offset,
1272 sub_len, true, cifs_sb->local_nls);
1273 if (!(*target_path)) {
1274 kfree(utf16_path);
1275 return -ENOMEM;
1276 }
1277 convert_delimiter(*target_path, '/');
1278 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
1279 kfree(utf16_path);
1280 return rc;
1281}
1282
30175628
SF		 1283static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
1284 loff_t offset, loff_t len, bool keep_size)
1285{
1286 struct inode *inode;
1287 struct cifsInodeInfo *cifsi;
1288 struct cifsFileInfo *cfile = file->private_data;
1289 struct file_zero_data_information fsctl_buf;
1290 long rc;
1291 unsigned int xid;
1292
1293 xid = get_xid();
1294
2b0143b5 1295 inode = d_inode(cfile->dentry);
30175628
SF		 1296 cifsi = CIFS_I(inode);
1297
1298 /* if file not oplocked can't be sure whether asking to extend size */
1299 if (!CIFS_CACHE_READ(cifsi))
1300 if (keep_size == false)
1301 return -EOPNOTSUPP;
1302
2bb93d24 1303 /*
30175628
SF		 1304 * Must check if file sparse since fallocate -z (zero range) assumes
1305 * non-sparse allocation
1306 */
1307 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE))
1308 return -EOPNOTSUPP;
1309
1310 /*
1311 * need to make sure we are not asked to extend the file since the SMB3
1312 * fsctl does not change the file size. In the future we could change
1313 * this to zero the first part of the range then set the file size
1314 * which for a non sparse file would zero the newly extended range
1315 */
1316 if (keep_size == false)
1317 if (i_size_read(inode) < offset + len)
1318 return -EOPNOTSUPP;
1319
1320 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1321
1322 fsctl_buf.FileOffset = cpu_to_le64(offset);
1323 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1324
1325 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1326 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
51146625
AA		 1327 true /* is_fctl */, false /* use_ipc */,
1328 (char *)&fsctl_buf,
30175628
SF		 1329 sizeof(struct file_zero_data_information), NULL, NULL);
1330 free_xid(xid);
1331 return rc;
1332}
1333
31742c5a
SF		 1334static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
1335 loff_t offset, loff_t len)
1336{
1337 struct inode *inode;
1338 struct cifsInodeInfo *cifsi;
1339 struct cifsFileInfo *cfile = file->private_data;
1340 struct file_zero_data_information fsctl_buf;
1341 long rc;
1342 unsigned int xid;
1343 __u8 set_sparse = 1;
1344
1345 xid = get_xid();
1346
2b0143b5 1347 inode = d_inode(cfile->dentry);
31742c5a
SF		 1348 cifsi = CIFS_I(inode);
1349
1350 /* Need to make file sparse, if not already, before freeing range. */
1351 /* Consider adding equivalent for compressed since it could also work */
1352 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse))
1353 return -EOPNOTSUPP;
1354
1355 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1356
1357 fsctl_buf.FileOffset = cpu_to_le64(offset);
1358 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1359
1360 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1361 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
51146625
AA		 1362 true /* is_fctl */, false /* use_ipc */,
1363 (char *)&fsctl_buf,
31742c5a
SF		 1364 sizeof(struct file_zero_data_information), NULL, NULL);
1365 free_xid(xid);
1366 return rc;
1367}
1368
9ccf3216
SF		 1369static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
1370 loff_t off, loff_t len, bool keep_size)
1371{
1372 struct inode *inode;
1373 struct cifsInodeInfo *cifsi;
1374 struct cifsFileInfo *cfile = file->private_data;
1375 long rc = -EOPNOTSUPP;
1376 unsigned int xid;
1377
1378 xid = get_xid();
1379
2b0143b5 1380 inode = d_inode(cfile->dentry);
9ccf3216
SF		 1381 cifsi = CIFS_I(inode);
1382
1383 /* if file not oplocked can't be sure whether asking to extend size */
1384 if (!CIFS_CACHE_READ(cifsi))
1385 if (keep_size == false)
1386 return -EOPNOTSUPP;
1387
1388 /*
1389 * Files are non-sparse by default so falloc may be a no-op
1390 * Must check if file sparse. If not sparse, and not extending
1391 * then no need to do anything since file already allocated
1392 */
1393 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
1394 if (keep_size == true)
1395 return 0;
1396 /* check if extending file */
1397 else if (i_size_read(inode) >= off + len)
1398 /* not extending file and already not sparse */
1399 return 0;
1400 /* BB: in future add else clause to extend file */
1401 else
1402 return -EOPNOTSUPP;
1403 }
1404
1405 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
1406 /*
1407 * Check if falloc starts within first few pages of file
1408 * and ends within a few pages of the end of file to
1409 * ensure that most of file is being forced to be
1410 * fallocated now. If so then setting whole file sparse
1411 * ie potentially making a few extra pages at the beginning
1412 * or end of the file non-sparse via set_sparse is harmless.
1413 */
1414 if ((off > 8192) || (off + len + 8192 < i_size_read(inode)))
1415 return -EOPNOTSUPP;
1416
1417 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
1418 }
1419 /* BB: else ... in future add code to extend file and set sparse */
1420
1421
1422 free_xid(xid);
1423 return rc;
1424}
1425
1426
31742c5a
SF		 1427static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
1428 loff_t off, loff_t len)
1429{
1430 /* KEEP_SIZE already checked for by do_fallocate */
1431 if (mode & FALLOC_FL_PUNCH_HOLE)
1432 return smb3_punch_hole(file, tcon, off, len);
30175628
SF		 1433 else if (mode & FALLOC_FL_ZERO_RANGE) {
1434 if (mode & FALLOC_FL_KEEP_SIZE)
1435 return smb3_zero_range(file, tcon, off, len, true);
1436 return smb3_zero_range(file, tcon, off, len, false);
9ccf3216
SF		 1437 } else if (mode == FALLOC_FL_KEEP_SIZE)
1438 return smb3_simple_falloc(file, tcon, off, len, true);
1439 else if (mode == 0)
1440 return smb3_simple_falloc(file, tcon, off, len, false);
31742c5a
SF		 1441
1442 return -EOPNOTSUPP;
1443}
1444
c11f1df5
SP		 1445static void
1446smb2_downgrade_oplock(struct TCP_Server_Info *server,
1447 struct cifsInodeInfo *cinode, bool set_level2)
1448{
1449 if (set_level2)
1450 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
1451 0, NULL);
1452 else
1453 server->ops->set_oplock_level(cinode, 0, 0, NULL);
1454}
1455
53ef1016 1456static void
42873b0a
PS		 1457smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1458 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 1459{
1460 oplock &= 0xFF;
1461 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1462 return;
1463 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
42873b0a 1464 cinode->oplock = CIFS_CACHE_RHW_FLG;
53ef1016
PS		 1465 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
1466 &cinode->vfs_inode);
1467 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
42873b0a 1468 cinode->oplock = CIFS_CACHE_RW_FLG;
53ef1016
PS		 1469 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
1470 &cinode->vfs_inode);
1471 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
1472 cinode->oplock = CIFS_CACHE_READ_FLG;
1473 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
1474 &cinode->vfs_inode);
1475 } else
1476 cinode->oplock = 0;
1477}
1478
1479static void
42873b0a
PS		 1480smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1481 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 1482{
1483 char message[5] = {0};
1484
1485 oplock &= 0xFF;
1486 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1487 return;
1488
1489 cinode->oplock = 0;
1490 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
1491 cinode->oplock |= CIFS_CACHE_READ_FLG;
1492 strcat(message, "R");
1493 }
1494 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
1495 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
1496 strcat(message, "H");
1497 }
1498 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
1499 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
1500 strcat(message, "W");
1501 }
1502 if (!cinode->oplock)
1503 strcat(message, "None");
1504 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
1505 &cinode->vfs_inode);
1506}
1507
42873b0a
PS		 1508static void
1509smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1510 unsigned int epoch, bool *purge_cache)
1511{
1512 unsigned int old_oplock = cinode->oplock;
1513
1514 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
1515
1516 if (purge_cache) {
1517 *purge_cache = false;
1518 if (old_oplock == CIFS_CACHE_READ_FLG) {
1519 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
1520 (epoch - cinode->epoch > 0))
1521 *purge_cache = true;
1522 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1523 (epoch - cinode->epoch > 1))
1524 *purge_cache = true;
1525 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1526 (epoch - cinode->epoch > 1))
1527 *purge_cache = true;
1528 else if (cinode->oplock == 0 &&
1529 (epoch - cinode->epoch > 0))
1530 *purge_cache = true;
1531 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
1532 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1533 (epoch - cinode->epoch > 0))
1534 *purge_cache = true;
1535 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1536 (epoch - cinode->epoch > 1))
1537 *purge_cache = true;
1538 }
1539 cinode->epoch = epoch;
1540 }
1541}
1542
53ef1016
PS		 1543static bool
1544smb2_is_read_op(__u32 oplock)
1545{
1546 return oplock == SMB2_OPLOCK_LEVEL_II;
1547}
1548
1549static bool
1550smb21_is_read_op(__u32 oplock)
1551{
1552 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
1553 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
1554}
1555
f047390a
PS		 1556static __le32
1557map_oplock_to_lease(u8 oplock)
1558{
1559 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
1560 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
1561 else if (oplock == SMB2_OPLOCK_LEVEL_II)
1562 return SMB2_LEASE_READ_CACHING;
1563 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
1564 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
1565 SMB2_LEASE_WRITE_CACHING;
1566 return 0;
1567}
1568
a41a28bd
PS		 1569static char *
1570smb2_create_lease_buf(u8 *lease_key, u8 oplock)
1571{
1572 struct create_lease *buf;
1573
1574 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
1575 if (!buf)
1576 return NULL;
1577
1578 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1579 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
f047390a 1580 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
a41a28bd
PS		 1581
1582 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1583 (struct create_lease, lcontext));
1584 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
1585 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1586 (struct create_lease, Name));
1587 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 1588 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
a41a28bd
PS		 1589 buf->Name[0] = 'R';
1590 buf->Name[1] = 'q';
1591 buf->Name[2] = 'L';
1592 buf->Name[3] = 's';
1593 return (char *)buf;
1594}
1595
f047390a
PS		 1596static char *
1597smb3_create_lease_buf(u8 *lease_key, u8 oplock)
1598{
1599 struct create_lease_v2 *buf;
1600
1601 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
1602 if (!buf)
1603 return NULL;
1604
1605 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1606 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
1607 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
1608
1609 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1610 (struct create_lease_v2, lcontext));
1611 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
1612 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1613 (struct create_lease_v2, Name));
1614 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 1615 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
f047390a
PS		 1616 buf->Name[0] = 'R';
1617 buf->Name[1] = 'q';
1618 buf->Name[2] = 'L';
1619 buf->Name[3] = 's';
1620 return (char *)buf;
1621}
1622
b5c7cde3 1623static __u8
42873b0a 1624smb2_parse_lease_buf(void *buf, unsigned int *epoch)
b5c7cde3
PS		 1625{
1626 struct create_lease *lc = (struct create_lease *)buf;
1627
42873b0a 1628 *epoch = 0; /* not used */
b5c7cde3
PS		 1629 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1630 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1631 return le32_to_cpu(lc->lcontext.LeaseState);
1632}
1633
f047390a 1634static __u8
42873b0a 1635smb3_parse_lease_buf(void *buf, unsigned int *epoch)
f047390a
PS		 1636{
1637 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
1638
42873b0a 1639 *epoch = le16_to_cpu(lc->lcontext.Epoch);
f047390a
PS		 1640 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1641 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1642 return le32_to_cpu(lc->lcontext.LeaseState);
1643}
1644
7f6c5008
PS		 1645static unsigned int
1646smb2_wp_retry_size(struct inode *inode)
1647{
1648 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
1649 SMB2_MAX_BUFFER_SIZE);
1650}
1651
52755808
PS		 1652static bool
1653smb2_dir_needs_close(struct cifsFileInfo *cfile)
1654{
1655 return !cfile->invalidHandle;
1656}
1657
026e93dc
PS		 1658static void
1659fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, struct smb_rqst *old_rq)
1660{
1661 struct smb2_sync_hdr *shdr =
1662 (struct smb2_sync_hdr *)old_rq->rq_iov[1].iov_base;
1663 unsigned int orig_len = get_rfc1002_length(old_rq->rq_iov[0].iov_base);
1664
1665 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
1666 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
1667 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
1668 tr_hdr->Flags = cpu_to_le16(0x01);
1669 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
1670 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
1671 inc_rfc1001_len(tr_hdr, sizeof(struct smb2_transform_hdr) - 4);
1672 inc_rfc1001_len(tr_hdr, orig_len);
1673}
1674
1675static struct scatterlist *
1676init_sg(struct smb_rqst *rqst, u8 *sign)
1677{
1678 unsigned int sg_len = rqst->rq_nvec + rqst->rq_npages + 1;
1679 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24;
1680 struct scatterlist *sg;
1681 unsigned int i;
1682 unsigned int j;
1683
1684 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
1685 if (!sg)
1686 return NULL;
1687
1688 sg_init_table(sg, sg_len);
1689 sg_set_buf(&sg[0], rqst->rq_iov[0].iov_base + 24, assoc_data_len);
1690 for (i = 1; i < rqst->rq_nvec; i++)
1691 sg_set_buf(&sg[i], rqst->rq_iov[i].iov_base,
1692 rqst->rq_iov[i].iov_len);
1693 for (j = 0; i < sg_len - 1; i++, j++) {
1694 unsigned int len = (j < rqst->rq_npages - 1) ? rqst->rq_pagesz
1695 : rqst->rq_tailsz;
1696 sg_set_page(&sg[i], rqst->rq_pages[j], len, 0);
1697 }
1698 sg_set_buf(&sg[sg_len - 1], sign, SMB2_SIGNATURE_SIZE);
1699 return sg;
1700}
1701
1702struct cifs_crypt_result {
1703 int err;
1704 struct completion completion;
1705};
1706
1707static void cifs_crypt_complete(struct crypto_async_request *req, int err)
1708{
1709 struct cifs_crypt_result *res = req->data;
1710
1711 if (err == -EINPROGRESS)
1712 return;
1713
1714 res->err = err;
1715 complete(&res->completion);
1716}
1717
61cfac6f
PS		 1718static int
1719smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
1720{
1721 struct cifs_ses *ses;
1722 u8 *ses_enc_key;
1723
1724 spin_lock(&cifs_tcp_ses_lock);
1725 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
1726 if (ses->Suid != ses_id)
1727 continue;
1728 ses_enc_key = enc ? ses->smb3encryptionkey :
1729 ses->smb3decryptionkey;
1730 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
1731 spin_unlock(&cifs_tcp_ses_lock);
1732 return 0;
1733 }
1734 spin_unlock(&cifs_tcp_ses_lock);
1735
1736 return 1;
1737}
026e93dc
PS		 1738/*
1739 * Encrypt or decrypt @rqst message. @rqst has the following format:
1740 * iov[0] - transform header (associate data),
1741 * iov[1-N] and pages - data to encrypt.
1742 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
1743 * untouched.
1744 */
1745static int
1746crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc)
1747{
1748 struct smb2_transform_hdr *tr_hdr =
1749 (struct smb2_transform_hdr *)rqst->rq_iov[0].iov_base;
1750 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24;
026e93dc
PS		 1751 int rc = 0;
1752 struct scatterlist *sg;
1753 u8 sign[SMB2_SIGNATURE_SIZE] = {};
61cfac6f 1754 u8 key[SMB3_SIGN_KEY_SIZE];
026e93dc
PS		 1755 struct aead_request *req;
1756 char *iv;
1757 unsigned int iv_len;
1758 struct cifs_crypt_result result = {0, };
1759 struct crypto_aead *tfm;
1760 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
1761
1762 init_completion(&result.completion);
1763
61cfac6f
PS		 1764 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
1765 if (rc) {
1766 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
1767 enc ? "en" : "de");
026e93dc
PS		 1768 return 0;
1769 }
1770
1771 rc = smb3_crypto_aead_allocate(server);
1772 if (rc) {
1773 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
1774 return rc;
1775 }
1776
1777 tfm = enc ? server->secmech.ccmaesencrypt :
1778 server->secmech.ccmaesdecrypt;
61cfac6f 1779 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
026e93dc
PS		 1780 if (rc) {
1781 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
1782 return rc;
1783 }
1784
1785 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
1786 if (rc) {
1787 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
1788 return rc;
1789 }
1790
1791 req = aead_request_alloc(tfm, GFP_KERNEL);
1792 if (!req) {
1793 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
1794 return -ENOMEM;
1795 }
1796
1797 if (!enc) {
1798 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
1799 crypt_len += SMB2_SIGNATURE_SIZE;
1800 }
1801
1802 sg = init_sg(rqst, sign);
1803 if (!sg) {
1804 cifs_dbg(VFS, "%s: Failed to init sg %d", __func__, rc);
1805 goto free_req;
1806 }
1807
1808 iv_len = crypto_aead_ivsize(tfm);
1809 iv = kzalloc(iv_len, GFP_KERNEL);
1810 if (!iv) {
1811 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
1812 goto free_sg;
1813 }
1814 iv[0] = 3;
1815 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
1816
1817 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
1818 aead_request_set_ad(req, assoc_data_len);
1819
1820 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
1821 cifs_crypt_complete, &result);
1822
1823 rc = enc ? crypto_aead_encrypt(req) : crypto_aead_decrypt(req);
1824
1825 if (rc == -EINPROGRESS || rc == -EBUSY) {
1826 wait_for_completion(&result.completion);
1827 rc = result.err;
1828 }
1829
1830 if (!rc && enc)
1831 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
1832
1833 kfree(iv);
1834free_sg:
1835 kfree(sg);
1836free_req:
1837 kfree(req);
1838 return rc;
1839}
1840
1841static int
1842smb3_init_transform_rq(struct TCP_Server_Info *server, struct smb_rqst *new_rq,
1843 struct smb_rqst *old_rq)
1844{
1845 struct kvec *iov;
1846 struct page **pages;
1847 struct smb2_transform_hdr *tr_hdr;
1848 unsigned int npages = old_rq->rq_npages;
1849 int i;
1850 int rc = -ENOMEM;
1851
1852 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
1853 if (!pages)
1854 return rc;
1855
1856 new_rq->rq_pages = pages;
1857 new_rq->rq_npages = old_rq->rq_npages;
1858 new_rq->rq_pagesz = old_rq->rq_pagesz;
1859 new_rq->rq_tailsz = old_rq->rq_tailsz;
1860
1861 for (i = 0; i < npages; i++) {
1862 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
1863 if (!pages[i])
1864 goto err_free_pages;
1865 }
1866
1867 iov = kmalloc_array(old_rq->rq_nvec, sizeof(struct kvec), GFP_KERNEL);
1868 if (!iov)
1869 goto err_free_pages;
1870
1871 /* copy all iovs from the old except the 1st one (rfc1002 length) */
1872 memcpy(&iov[1], &old_rq->rq_iov[1],
1873 sizeof(struct kvec) * (old_rq->rq_nvec - 1));
1874 new_rq->rq_iov = iov;
1875 new_rq->rq_nvec = old_rq->rq_nvec;
1876
1877 tr_hdr = kmalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL);
1878 if (!tr_hdr)
1879 goto err_free_iov;
1880
1881 /* fill the 1st iov with a transform header */
1882 fill_transform_hdr(tr_hdr, old_rq);
1883 new_rq->rq_iov[0].iov_base = tr_hdr;
1884 new_rq->rq_iov[0].iov_len = sizeof(struct smb2_transform_hdr);
1885
1886 /* copy pages form the old */
1887 for (i = 0; i < npages; i++) {
1888 char *dst = kmap(new_rq->rq_pages[i]);
1889 char *src = kmap(old_rq->rq_pages[i]);
1890 unsigned int len = (i < npages - 1) ? new_rq->rq_pagesz :
1891 new_rq->rq_tailsz;
1892 memcpy(dst, src, len);
1893 kunmap(new_rq->rq_pages[i]);
1894 kunmap(old_rq->rq_pages[i]);
1895 }
1896
1897 rc = crypt_message(server, new_rq, 1);
1898 cifs_dbg(FYI, "encrypt message returned %d", rc);
1899 if (rc)
1900 goto err_free_tr_hdr;
1901
1902 return rc;
1903
1904err_free_tr_hdr:
1905 kfree(tr_hdr);
1906err_free_iov:
1907 kfree(iov);
1908err_free_pages:
1909 for (i = i - 1; i >= 0; i--)
1910 put_page(pages[i]);
1911 kfree(pages);
1912 return rc;
1913}
1914
1915static void
1916smb3_free_transform_rq(struct smb_rqst *rqst)
1917{
1918 int i = rqst->rq_npages - 1;
1919
1920 for (; i >= 0; i--)
1921 put_page(rqst->rq_pages[i]);
1922 kfree(rqst->rq_pages);
1923 /* free transform header */
1924 kfree(rqst->rq_iov[0].iov_base);
1925 kfree(rqst->rq_iov);
1926}
1927
4326ed2f
PS		 1928static int
1929smb3_is_transform_hdr(void *buf)
1930{
1931 struct smb2_transform_hdr *trhdr = buf;
1932
1933 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
1934}
1935
1936static int
1937decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
1938 unsigned int buf_data_size, struct page **pages,
1939 unsigned int npages, unsigned int page_data_size)
1940{
1941 struct kvec iov[2];
1942 struct smb_rqst rqst = {NULL};
1943 struct smb2_hdr *hdr;
1944 int rc;
1945
1946 iov[0].iov_base = buf;
1947 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
1948 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
1949 iov[1].iov_len = buf_data_size;
1950
1951 rqst.rq_iov = iov;
1952 rqst.rq_nvec = 2;
1953 rqst.rq_pages = pages;
1954 rqst.rq_npages = npages;
1955 rqst.rq_pagesz = PAGE_SIZE;
1956 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
1957
1958 rc = crypt_message(server, &rqst, 0);
1959 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
1960
1961 if (rc)
1962 return rc;
1963
1964 memmove(buf + 4, iov[1].iov_base, buf_data_size);
1965 hdr = (struct smb2_hdr *)buf;
1966 hdr->smb2_buf_length = cpu_to_be32(buf_data_size + page_data_size);
1967 server->total_read = buf_data_size + page_data_size + 4;
1968
1969 return rc;
1970}
1971
c42a6abe
PS		 1972static int
1973read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
1974 unsigned int npages, unsigned int len)
1975{
1976 int i;
1977 int length;
1978
1979 for (i = 0; i < npages; i++) {
1980 struct page *page = pages[i];
1981 size_t n;
1982
1983 n = len;
1984 if (len >= PAGE_SIZE) {
1985 /* enough data to fill the page */
1986 n = PAGE_SIZE;
1987 len -= n;
1988 } else {
1989 zero_user(page, len, PAGE_SIZE - len);
1990 len = 0;
1991 }
1992 length = cifs_read_page_from_socket(server, page, n);
1993 if (length < 0)
1994 return length;
1995 server->total_read += length;
1996 }
1997
1998 return 0;
1999}
2000
2001static int
2002init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
2003 unsigned int cur_off, struct bio_vec **page_vec)
2004{
2005 struct bio_vec *bvec;
2006 int i;
2007
2008 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
2009 if (!bvec)
2010 return -ENOMEM;
2011
2012 for (i = 0; i < npages; i++) {
2013 bvec[i].bv_page = pages[i];
2014 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
2015 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
2016 data_size -= bvec[i].bv_len;
2017 }
2018
2019 if (data_size != 0) {
2020 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
2021 kfree(bvec);
2022 return -EIO;
2023 }
2024
2025 *page_vec = bvec;
2026 return 0;
2027}
2028
4326ed2f
PS		 2029static int
2030handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
2031 char *buf, unsigned int buf_len, struct page **pages,
2032 unsigned int npages, unsigned int page_data_size)
2033{
2034 unsigned int data_offset;
2035 unsigned int data_len;
c42a6abe
PS		 2036 unsigned int cur_off;
2037 unsigned int cur_page_idx;
2038 unsigned int pad_len;
4326ed2f
PS		 2039 struct cifs_readdata *rdata = mid->callback_data;
2040 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
2041 struct bio_vec *bvec = NULL;
2042 struct iov_iter iter;
2043 struct kvec iov;
2044 int length;
2045
2046 if (shdr->Command != SMB2_READ) {
2047 cifs_dbg(VFS, "only big read responses are supported\n");
2048 return -ENOTSUPP;
2049 }
2050
2051 if (server->ops->is_status_pending &&
2052 server->ops->is_status_pending(buf, server, 0))
2053 return -1;
2054
2055 rdata->result = server->ops->map_error(buf, false);
2056 if (rdata->result != 0) {
2057 cifs_dbg(FYI, "%s: server returned error %d\n",
2058 __func__, rdata->result);
2059 dequeue_mid(mid, rdata->result);
2060 return 0;
2061 }
2062
2063 data_offset = server->ops->read_data_offset(buf) + 4;
2064 data_len = server->ops->read_data_length(buf);
2065
2066 if (data_offset < server->vals->read_rsp_size) {
2067 /*
2068 * win2k8 sometimes sends an offset of 0 when the read
2069 * is beyond the EOF. Treat it as if the data starts just after
2070 * the header.
2071 */
2072 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
2073 __func__, data_offset);
2074 data_offset = server->vals->read_rsp_size;
2075 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
2076 /* data_offset is beyond the end of smallbuf */
2077 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
2078 __func__, data_offset);
2079 rdata->result = -EIO;
2080 dequeue_mid(mid, rdata->result);
2081 return 0;
2082 }
2083
c42a6abe
PS		 2084 pad_len = data_offset - server->vals->read_rsp_size;
2085
4326ed2f
PS		 2086 if (buf_len <= data_offset) {
2087 /* read response payload is in pages */
c42a6abe
PS		 2088 cur_page_idx = pad_len / PAGE_SIZE;
2089 cur_off = pad_len % PAGE_SIZE;
2090
2091 if (cur_page_idx != 0) {
2092 /* data offset is beyond the 1st page of response */
2093 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
2094 __func__, data_offset);
2095 rdata->result = -EIO;
2096 dequeue_mid(mid, rdata->result);
2097 return 0;
2098 }
2099
2100 if (data_len > page_data_size - pad_len) {
2101 /* data_len is corrupt -- discard frame */
2102 rdata->result = -EIO;
2103 dequeue_mid(mid, rdata->result);
2104 return 0;
2105 }
2106
2107 rdata->result = init_read_bvec(pages, npages, page_data_size,
2108 cur_off, &bvec);
2109 if (rdata->result != 0) {
2110 dequeue_mid(mid, rdata->result);
2111 return 0;
2112 }
2113
2114 iov_iter_bvec(&iter, WRITE | ITER_BVEC, bvec, npages, data_len);
4326ed2f
PS		 2115 } else if (buf_len >= data_offset + data_len) {
2116 /* read response payload is in buf */
2117 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
2118 iov.iov_base = buf + data_offset;
2119 iov.iov_len = data_len;
2120 iov_iter_kvec(&iter, WRITE | ITER_KVEC, &iov, 1, data_len);
2121 } else {
2122 /* read response payload cannot be in both buf and pages */
2123 WARN_ONCE(1, "buf can not contain only a part of read data");
2124 rdata->result = -EIO;
2125 dequeue_mid(mid, rdata->result);
2126 return 0;
2127 }
2128
2129 /* set up first iov for signature check */
2130 rdata->iov[0].iov_base = buf;
2131 rdata->iov[0].iov_len = 4;
2132 rdata->iov[1].iov_base = buf + 4;
2133 rdata->iov[1].iov_len = server->vals->read_rsp_size - 4;
2134 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
2135 rdata->iov[0].iov_base, server->vals->read_rsp_size);
2136
2137 length = rdata->copy_into_pages(server, rdata, &iter);
2138
2139 kfree(bvec);
2140
2141 if (length < 0)
2142 return length;
2143
2144 dequeue_mid(mid, false);
2145 return length;
2146}
2147
c42a6abe
PS		 2148static int
2149receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2150{
2151 char *buf = server->smallbuf;
2152 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2153 unsigned int npages;
2154 struct page **pages;
2155 unsigned int len;
2156 unsigned int buflen = get_rfc1002_length(buf) + 4;
2157 int rc;
2158 int i = 0;
2159
2160 len = min_t(unsigned int, buflen, server->vals->read_rsp_size - 4 +
2161 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
2162
2163 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
2164 if (rc < 0)
2165 return rc;
2166 server->total_read += rc;
2167
2168 len = le32_to_cpu(tr_hdr->OriginalMessageSize) + 4 -
2169 server->vals->read_rsp_size;
2170 npages = DIV_ROUND_UP(len, PAGE_SIZE);
2171
2172 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
2173 if (!pages) {
2174 rc = -ENOMEM;
2175 goto discard_data;
2176 }
2177
2178 for (; i < npages; i++) {
2179 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2180 if (!pages[i]) {
2181 rc = -ENOMEM;
2182 goto discard_data;
2183 }
2184 }
2185
2186 /* read read data into pages */
2187 rc = read_data_into_pages(server, pages, npages, len);
2188 if (rc)
2189 goto free_pages;
2190
2191 rc = cifs_discard_remaining_data(server);
2192 if (rc)
2193 goto free_pages;
2194
2195 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size - 4,
2196 pages, npages, len);
2197 if (rc)
2198 goto free_pages;
2199
2200 *mid = smb2_find_mid(server, buf);
2201 if (*mid == NULL)
2202 cifs_dbg(FYI, "mid not found\n");
2203 else {
2204 cifs_dbg(FYI, "mid found\n");
2205 (*mid)->decrypted = true;
2206 rc = handle_read_data(server, *mid, buf,
2207 server->vals->read_rsp_size,
2208 pages, npages, len);
2209 }
2210
2211free_pages:
2212 for (i = i - 1; i >= 0; i--)
2213 put_page(pages[i]);
2214 kfree(pages);
2215 return rc;
2216discard_data:
2217 cifs_discard_remaining_data(server);
2218 goto free_pages;
2219}
2220
4326ed2f
PS		 2221static int
2222receive_encrypted_standard(struct TCP_Server_Info *server,
2223 struct mid_q_entry **mid)
2224{
2225 int length;
2226 char *buf = server->smallbuf;
2227 unsigned int pdu_length = get_rfc1002_length(buf);
2228 unsigned int buf_size;
2229 struct mid_q_entry *mid_entry;
2230
2231 /* switch to large buffer if too big for a small one */
2232 if (pdu_length + 4 > MAX_CIFS_SMALL_BUFFER_SIZE) {
2233 server->large_buf = true;
2234 memcpy(server->bigbuf, buf, server->total_read);
2235 buf = server->bigbuf;
2236 }
2237
2238 /* now read the rest */
2239 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
2240 pdu_length - HEADER_SIZE(server) + 1 + 4);
2241 if (length < 0)
2242 return length;
2243 server->total_read += length;
2244
2245 buf_size = pdu_length + 4 - sizeof(struct smb2_transform_hdr);
2246 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
2247 if (length)
2248 return length;
2249
2250 mid_entry = smb2_find_mid(server, buf);
2251 if (mid_entry == NULL)
2252 cifs_dbg(FYI, "mid not found\n");
2253 else {
2254 cifs_dbg(FYI, "mid found\n");
2255 mid_entry->decrypted = true;
2256 }
2257
2258 *mid = mid_entry;
2259
2260 if (mid_entry && mid_entry->handle)
2261 return mid_entry->handle(server, mid_entry);
2262
2263 return cifs_handle_standard(server, mid_entry);
2264}
2265
2266static int
2267smb3_receive_transform(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2268{
2269 char *buf = server->smallbuf;
2270 unsigned int pdu_length = get_rfc1002_length(buf);
2271 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2272 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2273
2274 if (pdu_length + 4 < sizeof(struct smb2_transform_hdr) +
2275 sizeof(struct smb2_sync_hdr)) {
2276 cifs_dbg(VFS, "Transform message is too small (%u)\n",
2277 pdu_length);
2278 cifs_reconnect(server);
2279 wake_up(&server->response_q);
2280 return -ECONNABORTED;
2281 }
2282
2283 if (pdu_length + 4 < orig_len + sizeof(struct smb2_transform_hdr)) {
2284 cifs_dbg(VFS, "Transform message is broken\n");
2285 cifs_reconnect(server);
2286 wake_up(&server->response_q);
2287 return -ECONNABORTED;
2288 }
2289
c42a6abe
PS		 2290 if (pdu_length + 4 > CIFSMaxBufSize + MAX_HEADER_SIZE(server))
2291 return receive_encrypted_read(server, mid);
4326ed2f
PS		 2292
2293 return receive_encrypted_standard(server, mid);
2294}
2295
2296int
2297smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
2298{
2299 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
2300
2301 return handle_read_data(server, mid, buf, get_rfc1002_length(buf) + 4,
2302 NULL, 0, 0);
2303}
2304
53ef1016 2305struct smb_version_operations smb20_operations = {
027e8eec 2306 .compare_fids = smb2_compare_fids,
2dc7e1c0 2307 .setup_request = smb2_setup_request,
c95b8eed 2308 .setup_async_request = smb2_setup_async_request,
2dc7e1c0 2309 .check_receive = smb2_check_receive,
28ea5290
PS		 2310 .add_credits = smb2_add_credits,
2311 .set_credits = smb2_set_credits,
2312 .get_credits_field = smb2_get_credits_field,
2313 .get_credits = smb2_get_credits,
cb7e9eab 2314 .wait_mtu_credits = cifs_wait_mtu_credits,
2dc7e1c0 2315 .get_next_mid = smb2_get_next_mid,
09a4707e
PS		 2316 .read_data_offset = smb2_read_data_offset,
2317 .read_data_length = smb2_read_data_length,
2318 .map_error = map_smb2_to_linux_error,
093b2bda
PS		 2319 .find_mid = smb2_find_mid,
2320 .check_message = smb2_check_message,
2321 .dump_detail = smb2_dump_detail,
d60622eb
PS		 2322 .clear_stats = smb2_clear_stats,
2323 .print_stats = smb2_print_stats,
983c88a4 2324 .is_oplock_break = smb2_is_valid_oplock_break,
c11f1df5 2325 .downgrade_oplock = smb2_downgrade_oplock,
ec2e4523
PS		 2326 .need_neg = smb2_need_neg,
2327 .negotiate = smb2_negotiate,
3a3bab50
PS		 2328 .negotiate_wsize = smb2_negotiate_wsize,
2329 .negotiate_rsize = smb2_negotiate_rsize,
5478f9ba
PS		 2330 .sess_setup = SMB2_sess_setup,
2331 .logoff = SMB2_logoff,
faaf946a
PS		 2332 .tree_connect = SMB2_tcon,
2333 .tree_disconnect = SMB2_tdis,
34f62640 2334 .qfs_tcon = smb2_qfs_tcon,
2503a0db 2335 .is_path_accessible = smb2_is_path_accessible,
9094fad1
PS		 2336 .can_echo = smb2_can_echo,
2337 .echo = SMB2_echo,
be4cb9e3
PS		 2338 .query_path_info = smb2_query_path_info,
2339 .get_srv_inum = smb2_get_srv_inum,
b7546bc5 2340 .query_file_info = smb2_query_file_info,
c839ff24
PS		 2341 .set_path_size = smb2_set_path_size,
2342 .set_file_size = smb2_set_file_size,
1feeaac7 2343 .set_file_info = smb2_set_file_info,
64a5cfa6 2344 .set_compression = smb2_set_compression,
a0e73183
PS		 2345 .mkdir = smb2_mkdir,
2346 .mkdir_setinfo = smb2_mkdir_setinfo,
1a500f01 2347 .rmdir = smb2_rmdir,
cbe6f439 2348 .unlink = smb2_unlink,
35143eb5 2349 .rename = smb2_rename_path,
568798cc 2350 .create_hardlink = smb2_create_hardlink,
b42bf888 2351 .query_symlink = smb2_query_symlink,
5b23c97d
SP		 2352 .query_mf_symlink = smb3_query_mf_symlink,
2353 .create_mf_symlink = smb3_create_mf_symlink,
f0df737e
PS		 2354 .open = smb2_open_file,
2355 .set_fid = smb2_set_fid,
2356 .close = smb2_close_file,
7a5cfb19 2357 .flush = smb2_flush_file,
09a4707e 2358 .async_readv = smb2_async_readv,
33319141 2359 .async_writev = smb2_async_writev,
d8e05039 2360 .sync_read = smb2_sync_read,
009d3443 2361 .sync_write = smb2_sync_write,
d324f08d
PS		 2362 .query_dir_first = smb2_query_dir_first,
2363 .query_dir_next = smb2_query_dir_next,
2364 .close_dir = smb2_close_dir,
2365 .calc_smb_size = smb2_calc_size,
2e44b288 2366 .is_status_pending = smb2_is_status_pending,
983c88a4 2367 .oplock_response = smb2_oplock_response,
6fc05c25 2368 .queryfs = smb2_queryfs,
f7ba7fe6
PS		 2369 .mand_lock = smb2_mand_lock,
2370 .mand_unlock_range = smb2_unlock_range,
b140799a 2371 .push_mand_locks = smb2_push_mandatory_locks,
b8c32dbb
PS		 2372 .get_lease_key = smb2_get_lease_key,
2373 .set_lease_key = smb2_set_lease_key,
2374 .new_lease_key = smb2_new_lease_key,
38107d45 2375 .calc_signature = smb2_calc_signature,
53ef1016
PS		 2376 .is_read_op = smb2_is_read_op,
2377 .set_oplock_level = smb2_set_oplock_level,
a41a28bd 2378 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 2379 .parse_lease_buf = smb2_parse_lease_buf,
41c1358e 2380 .clone_range = smb2_clone_range,
7f6c5008 2381 .wp_retry_size = smb2_wp_retry_size,
52755808 2382 .dir_needs_close = smb2_dir_needs_close,
9d49640a 2383 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2384 .select_sectype = smb2_select_sectype,
38107d45
SF		 2385};
2386
53ef1016
PS		 2387struct smb_version_operations smb21_operations = {
2388 .compare_fids = smb2_compare_fids,
2389 .setup_request = smb2_setup_request,
2390 .setup_async_request = smb2_setup_async_request,
2391 .check_receive = smb2_check_receive,
2392 .add_credits = smb2_add_credits,
2393 .set_credits = smb2_set_credits,
2394 .get_credits_field = smb2_get_credits_field,
2395 .get_credits = smb2_get_credits,
cb7e9eab 2396 .wait_mtu_credits = smb2_wait_mtu_credits,
53ef1016
PS		 2397 .get_next_mid = smb2_get_next_mid,
2398 .read_data_offset = smb2_read_data_offset,
2399 .read_data_length = smb2_read_data_length,
2400 .map_error = map_smb2_to_linux_error,
2401 .find_mid = smb2_find_mid,
2402 .check_message = smb2_check_message,
2403 .dump_detail = smb2_dump_detail,
2404 .clear_stats = smb2_clear_stats,
2405 .print_stats = smb2_print_stats,
2406 .is_oplock_break = smb2_is_valid_oplock_break,
c11f1df5 2407 .downgrade_oplock = smb2_downgrade_oplock,
53ef1016
PS		 2408 .need_neg = smb2_need_neg,
2409 .negotiate = smb2_negotiate,
2410 .negotiate_wsize = smb2_negotiate_wsize,
2411 .negotiate_rsize = smb2_negotiate_rsize,
2412 .sess_setup = SMB2_sess_setup,
2413 .logoff = SMB2_logoff,
2414 .tree_connect = SMB2_tcon,
2415 .tree_disconnect = SMB2_tdis,
34f62640 2416 .qfs_tcon = smb2_qfs_tcon,
53ef1016
PS		 2417 .is_path_accessible = smb2_is_path_accessible,
2418 .can_echo = smb2_can_echo,
2419 .echo = SMB2_echo,
2420 .query_path_info = smb2_query_path_info,
2421 .get_srv_inum = smb2_get_srv_inum,
2422 .query_file_info = smb2_query_file_info,
2423 .set_path_size = smb2_set_path_size,
2424 .set_file_size = smb2_set_file_size,
2425 .set_file_info = smb2_set_file_info,
64a5cfa6 2426 .set_compression = smb2_set_compression,
53ef1016
PS		 2427 .mkdir = smb2_mkdir,
2428 .mkdir_setinfo = smb2_mkdir_setinfo,
2429 .rmdir = smb2_rmdir,
2430 .unlink = smb2_unlink,
2431 .rename = smb2_rename_path,
2432 .create_hardlink = smb2_create_hardlink,
2433 .query_symlink = smb2_query_symlink,
c22870ea 2434 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 2435 .create_mf_symlink = smb3_create_mf_symlink,
53ef1016
PS		 2436 .open = smb2_open_file,
2437 .set_fid = smb2_set_fid,
2438 .close = smb2_close_file,
2439 .flush = smb2_flush_file,
2440 .async_readv = smb2_async_readv,
2441 .async_writev = smb2_async_writev,
2442 .sync_read = smb2_sync_read,
2443 .sync_write = smb2_sync_write,
2444 .query_dir_first = smb2_query_dir_first,
2445 .query_dir_next = smb2_query_dir_next,
2446 .close_dir = smb2_close_dir,
2447 .calc_smb_size = smb2_calc_size,
2448 .is_status_pending = smb2_is_status_pending,
2449 .oplock_response = smb2_oplock_response,
2450 .queryfs = smb2_queryfs,
2451 .mand_lock = smb2_mand_lock,
2452 .mand_unlock_range = smb2_unlock_range,
2453 .push_mand_locks = smb2_push_mandatory_locks,
2454 .get_lease_key = smb2_get_lease_key,
2455 .set_lease_key = smb2_set_lease_key,
2456 .new_lease_key = smb2_new_lease_key,
2457 .calc_signature = smb2_calc_signature,
2458 .is_read_op = smb21_is_read_op,
2459 .set_oplock_level = smb21_set_oplock_level,
a41a28bd 2460 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 2461 .parse_lease_buf = smb2_parse_lease_buf,
41c1358e 2462 .clone_range = smb2_clone_range,
7f6c5008 2463 .wp_retry_size = smb2_wp_retry_size,
52755808 2464 .dir_needs_close = smb2_dir_needs_close,
834170c8 2465 .enum_snapshots = smb3_enum_snapshots,
9d49640a 2466 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2467 .select_sectype = smb2_select_sectype,
53ef1016 2468};
38107d45
SF		 2469
2470struct smb_version_operations smb30_operations = {
2471 .compare_fids = smb2_compare_fids,
2472 .setup_request = smb2_setup_request,
2473 .setup_async_request = smb2_setup_async_request,
2474 .check_receive = smb2_check_receive,
2475 .add_credits = smb2_add_credits,
2476 .set_credits = smb2_set_credits,
2477 .get_credits_field = smb2_get_credits_field,
2478 .get_credits = smb2_get_credits,
cb7e9eab 2479 .wait_mtu_credits = smb2_wait_mtu_credits,
38107d45
SF		 2480 .get_next_mid = smb2_get_next_mid,
2481 .read_data_offset = smb2_read_data_offset,
2482 .read_data_length = smb2_read_data_length,
2483 .map_error = map_smb2_to_linux_error,
2484 .find_mid = smb2_find_mid,
2485 .check_message = smb2_check_message,
2486 .dump_detail = smb2_dump_detail,
2487 .clear_stats = smb2_clear_stats,
2488 .print_stats = smb2_print_stats,
769ee6a4 2489 .dump_share_caps = smb2_dump_share_caps,
38107d45 2490 .is_oplock_break = smb2_is_valid_oplock_break,
c11f1df5 2491 .downgrade_oplock = smb2_downgrade_oplock,
38107d45
SF		 2492 .need_neg = smb2_need_neg,
2493 .negotiate = smb2_negotiate,
2494 .negotiate_wsize = smb2_negotiate_wsize,
2495 .negotiate_rsize = smb2_negotiate_rsize,
2496 .sess_setup = SMB2_sess_setup,
2497 .logoff = SMB2_logoff,
2498 .tree_connect = SMB2_tcon,
2499 .tree_disconnect = SMB2_tdis,
af6a12ea 2500 .qfs_tcon = smb3_qfs_tcon,
38107d45
SF		 2501 .is_path_accessible = smb2_is_path_accessible,
2502 .can_echo = smb2_can_echo,
2503 .echo = SMB2_echo,
2504 .query_path_info = smb2_query_path_info,
2505 .get_srv_inum = smb2_get_srv_inum,
2506 .query_file_info = smb2_query_file_info,
2507 .set_path_size = smb2_set_path_size,
2508 .set_file_size = smb2_set_file_size,
2509 .set_file_info = smb2_set_file_info,
64a5cfa6 2510 .set_compression = smb2_set_compression,
38107d45
SF		 2511 .mkdir = smb2_mkdir,
2512 .mkdir_setinfo = smb2_mkdir_setinfo,
2513 .rmdir = smb2_rmdir,
2514 .unlink = smb2_unlink,
2515 .rename = smb2_rename_path,
2516 .create_hardlink = smb2_create_hardlink,
b42bf888 2517 .query_symlink = smb2_query_symlink,
c22870ea 2518 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 2519 .create_mf_symlink = smb3_create_mf_symlink,
38107d45
SF		 2520 .open = smb2_open_file,
2521 .set_fid = smb2_set_fid,
2522 .close = smb2_close_file,
2523 .flush = smb2_flush_file,
2524 .async_readv = smb2_async_readv,
2525 .async_writev = smb2_async_writev,
2526 .sync_read = smb2_sync_read,
2527 .sync_write = smb2_sync_write,
2528 .query_dir_first = smb2_query_dir_first,
2529 .query_dir_next = smb2_query_dir_next,
2530 .close_dir = smb2_close_dir,
2531 .calc_smb_size = smb2_calc_size,
2532 .is_status_pending = smb2_is_status_pending,
2533 .oplock_response = smb2_oplock_response,
2534 .queryfs = smb2_queryfs,
2535 .mand_lock = smb2_mand_lock,
2536 .mand_unlock_range = smb2_unlock_range,
2537 .push_mand_locks = smb2_push_mandatory_locks,
2538 .get_lease_key = smb2_get_lease_key,
2539 .set_lease_key = smb2_set_lease_key,
2540 .new_lease_key = smb2_new_lease_key,
373512ec 2541 .generate_signingkey = generate_smb30signingkey,
38107d45 2542 .calc_signature = smb3_calc_signature,
b3152e2c 2543 .set_integrity = smb3_set_integrity,
53ef1016 2544 .is_read_op = smb21_is_read_op,
42873b0a 2545 .set_oplock_level = smb3_set_oplock_level,
f047390a
PS		 2546 .create_lease_buf = smb3_create_lease_buf,
2547 .parse_lease_buf = smb3_parse_lease_buf,
41c1358e 2548 .clone_range = smb2_clone_range,
ca9e7a1c 2549 .duplicate_extents = smb2_duplicate_extents,
ff1c038a 2550 .validate_negotiate = smb3_validate_negotiate,
7f6c5008 2551 .wp_retry_size = smb2_wp_retry_size,
52755808 2552 .dir_needs_close = smb2_dir_needs_close,
31742c5a 2553 .fallocate = smb3_fallocate,
834170c8 2554 .enum_snapshots = smb3_enum_snapshots,
026e93dc
PS		 2555 .init_transform_rq = smb3_init_transform_rq,
2556 .free_transform_rq = smb3_free_transform_rq,
4326ed2f
PS		 2557 .is_transform_hdr = smb3_is_transform_hdr,
2558 .receive_transform = smb3_receive_transform,
9d49640a 2559 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2560 .select_sectype = smb2_select_sectype,
1080ef75
SF		 2561};
2562
aab1893d
SF		 2563#ifdef CONFIG_CIFS_SMB311
2564struct smb_version_operations smb311_operations = {
2565 .compare_fids = smb2_compare_fids,
2566 .setup_request = smb2_setup_request,
2567 .setup_async_request = smb2_setup_async_request,
2568 .check_receive = smb2_check_receive,
2569 .add_credits = smb2_add_credits,
2570 .set_credits = smb2_set_credits,
2571 .get_credits_field = smb2_get_credits_field,
2572 .get_credits = smb2_get_credits,
2573 .wait_mtu_credits = smb2_wait_mtu_credits,
2574 .get_next_mid = smb2_get_next_mid,
2575 .read_data_offset = smb2_read_data_offset,
2576 .read_data_length = smb2_read_data_length,
2577 .map_error = map_smb2_to_linux_error,
2578 .find_mid = smb2_find_mid,
2579 .check_message = smb2_check_message,
2580 .dump_detail = smb2_dump_detail,
2581 .clear_stats = smb2_clear_stats,
2582 .print_stats = smb2_print_stats,
2583 .dump_share_caps = smb2_dump_share_caps,
2584 .is_oplock_break = smb2_is_valid_oplock_break,
2585 .downgrade_oplock = smb2_downgrade_oplock,
2586 .need_neg = smb2_need_neg,
2587 .negotiate = smb2_negotiate,
2588 .negotiate_wsize = smb2_negotiate_wsize,
2589 .negotiate_rsize = smb2_negotiate_rsize,
2590 .sess_setup = SMB2_sess_setup,
2591 .logoff = SMB2_logoff,
2592 .tree_connect = SMB2_tcon,
2593 .tree_disconnect = SMB2_tdis,
2594 .qfs_tcon = smb3_qfs_tcon,
2595 .is_path_accessible = smb2_is_path_accessible,
2596 .can_echo = smb2_can_echo,
2597 .echo = SMB2_echo,
2598 .query_path_info = smb2_query_path_info,
2599 .get_srv_inum = smb2_get_srv_inum,
2600 .query_file_info = smb2_query_file_info,
2601 .set_path_size = smb2_set_path_size,
2602 .set_file_size = smb2_set_file_size,
2603 .set_file_info = smb2_set_file_info,
2604 .set_compression = smb2_set_compression,
2605 .mkdir = smb2_mkdir,
2606 .mkdir_setinfo = smb2_mkdir_setinfo,
2607 .rmdir = smb2_rmdir,
2608 .unlink = smb2_unlink,
2609 .rename = smb2_rename_path,
2610 .create_hardlink = smb2_create_hardlink,
2611 .query_symlink = smb2_query_symlink,
2612 .query_mf_symlink = smb3_query_mf_symlink,
2613 .create_mf_symlink = smb3_create_mf_symlink,
2614 .open = smb2_open_file,
2615 .set_fid = smb2_set_fid,
2616 .close = smb2_close_file,
2617 .flush = smb2_flush_file,
2618 .async_readv = smb2_async_readv,
2619 .async_writev = smb2_async_writev,
2620 .sync_read = smb2_sync_read,
2621 .sync_write = smb2_sync_write,
2622 .query_dir_first = smb2_query_dir_first,
2623 .query_dir_next = smb2_query_dir_next,
2624 .close_dir = smb2_close_dir,
2625 .calc_smb_size = smb2_calc_size,
2626 .is_status_pending = smb2_is_status_pending,
2627 .oplock_response = smb2_oplock_response,
2628 .queryfs = smb2_queryfs,
2629 .mand_lock = smb2_mand_lock,
2630 .mand_unlock_range = smb2_unlock_range,
2631 .push_mand_locks = smb2_push_mandatory_locks,
2632 .get_lease_key = smb2_get_lease_key,
2633 .set_lease_key = smb2_set_lease_key,
2634 .new_lease_key = smb2_new_lease_key,
373512ec 2635 .generate_signingkey = generate_smb311signingkey,
aab1893d 2636 .calc_signature = smb3_calc_signature,
b3152e2c 2637 .set_integrity = smb3_set_integrity,
aab1893d
SF		 2638 .is_read_op = smb21_is_read_op,
2639 .set_oplock_level = smb3_set_oplock_level,
2640 .create_lease_buf = smb3_create_lease_buf,
2641 .parse_lease_buf = smb3_parse_lease_buf,
2642 .clone_range = smb2_clone_range,
02b16665 2643 .duplicate_extents = smb2_duplicate_extents,
aab1893d
SF		 2644/* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
2645 .wp_retry_size = smb2_wp_retry_size,
2646 .dir_needs_close = smb2_dir_needs_close,
2647 .fallocate = smb3_fallocate,
834170c8 2648 .enum_snapshots = smb3_enum_snapshots,
026e93dc
PS		 2649 .init_transform_rq = smb3_init_transform_rq,
2650 .free_transform_rq = smb3_free_transform_rq,
4326ed2f
PS		 2651 .is_transform_hdr = smb3_is_transform_hdr,
2652 .receive_transform = smb3_receive_transform,
9d49640a 2653 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2654 .select_sectype = smb2_select_sectype,
aab1893d
SF		 2655};
2656#endif /* CIFS_SMB311 */
2657
dd446b16
SF		 2658struct smb_version_values smb20_values = {
2659 .version_string = SMB20_VERSION_STRING,
2660 .protocol_id = SMB20_PROT_ID,
2661 .req_capabilities = 0, /* MBZ */
2662 .large_lock_type = 0,
2663 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2664 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2665 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2666 .header_size = sizeof(struct smb2_hdr),
2667 .max_header_size = MAX_SMB2_HDR_SIZE,
2668 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2669 .lock_cmd = SMB2_LOCK,
2670 .cap_unix = 0,
2671 .cap_nt_find = SMB2_NT_FIND,
2672 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 2673 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2674 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 2675 .create_lease_size = sizeof(struct create_lease),
dd446b16
SF		 2676};
2677
1080ef75
SF		 2678struct smb_version_values smb21_values = {
2679 .version_string = SMB21_VERSION_STRING,
e4aa25e7
SF		 2680 .protocol_id = SMB21_PROT_ID,
2681 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
2682 .large_lock_type = 0,
2683 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2684 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2685 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2686 .header_size = sizeof(struct smb2_hdr),
2687 .max_header_size = MAX_SMB2_HDR_SIZE,
2688 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2689 .lock_cmd = SMB2_LOCK,
2690 .cap_unix = 0,
2691 .cap_nt_find = SMB2_NT_FIND,
2692 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 2693 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2694 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 2695 .create_lease_size = sizeof(struct create_lease),
e4aa25e7
SF		 2696};
2697
2698struct smb_version_values smb30_values = {
2699 .version_string = SMB30_VERSION_STRING,
2700 .protocol_id = SMB30_PROT_ID,
373512ec 2701 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
027e8eec
PS		 2702 .large_lock_type = 0,
2703 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2704 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2705 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
093b2bda
PS		 2706 .header_size = sizeof(struct smb2_hdr),
2707 .max_header_size = MAX_SMB2_HDR_SIZE,
09a4707e 2708 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2dc7e1c0 2709 .lock_cmd = SMB2_LOCK,
29e20f9c
PS		 2710 .cap_unix = 0,
2711 .cap_nt_find = SMB2_NT_FIND,
2712 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 2713 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2714 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 2715 .create_lease_size = sizeof(struct create_lease_v2),
1080ef75 2716};
20b6d8b4
SF		 2717
2718struct smb_version_values smb302_values = {
2719 .version_string = SMB302_VERSION_STRING,
2720 .protocol_id = SMB302_PROT_ID,
373512ec 2721 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
20b6d8b4
SF		 2722 .large_lock_type = 0,
2723 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2724 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2725 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2726 .header_size = sizeof(struct smb2_hdr),
2727 .max_header_size = MAX_SMB2_HDR_SIZE,
2728 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2729 .lock_cmd = SMB2_LOCK,
2730 .cap_unix = 0,
2731 .cap_nt_find = SMB2_NT_FIND,
2732 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 2733 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2734 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 2735 .create_lease_size = sizeof(struct create_lease_v2),
20b6d8b4 2736};
5f7fbf73
SF		 2737
2738#ifdef CONFIG_CIFS_SMB311
2739struct smb_version_values smb311_values = {
2740 .version_string = SMB311_VERSION_STRING,
2741 .protocol_id = SMB311_PROT_ID,
b618f001 2742 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES,
5f7fbf73
SF		 2743 .large_lock_type = 0,
2744 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2745 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2746 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2747 .header_size = sizeof(struct smb2_hdr),
2748 .max_header_size = MAX_SMB2_HDR_SIZE,
2749 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2750 .lock_cmd = SMB2_LOCK,
2751 .cap_unix = 0,
2752 .cap_nt_find = SMB2_NT_FIND,
2753 .cap_large_files = SMB2_LARGE_FILES,
2754 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2755 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
2756 .create_lease_size = sizeof(struct create_lease_v2),
2757};
2758#endif /* SMB311 */
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