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Merge remote-tracking branches 'regulator/topic/anatop', 'regulator/topic/arizona...
[mirror_ubuntu-bionic-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 23#include <linux/scatterlist.h>
4fa8e504 24#include <linux/uuid.h>
026e93dc 25#include <crypto/aead.h>
1080ef75 26#include "cifsglob.h"
2dc7e1c0
PS		 27#include "smb2pdu.h"
28#include "smb2proto.h"
28ea5290
PS		 29#include "cifsproto.h"
30#include "cifs_debug.h"
b42bf888 31#include "cifs_unicode.h"
2e44b288 32#include "smb2status.h"
6fc05c25 33#include "smb2glob.h"
834170c8 34#include "cifs_ioctl.h"
28ea5290
PS		 35
36static int
37change_conf(struct TCP_Server_Info *server)
38{
39 server->credits += server->echo_credits + server->oplock_credits;
40 server->oplock_credits = server->echo_credits = 0;
41 switch (server->credits) {
42 case 0:
43 return -1;
44 case 1:
45 server->echoes = false;
46 server->oplocks = false;
f96637be 47 cifs_dbg(VFS, "disabling echoes and oplocks\n");
28ea5290
PS		 48 break;
49 case 2:
50 server->echoes = true;
51 server->oplocks = false;
52 server->echo_credits = 1;
f96637be 53 cifs_dbg(FYI, "disabling oplocks\n");
28ea5290
PS		 54 break;
55 default:
56 server->echoes = true;
e0ddde9d
SF		 57 if (enable_oplocks) {
58 server->oplocks = true;
59 server->oplock_credits = 1;
60 } else
61 server->oplocks = false;
62
28ea5290 63 server->echo_credits = 1;
28ea5290
PS		 64 }
65 server->credits -= server->echo_credits + server->oplock_credits;
66 return 0;
67}
68
69static void
70smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
71 const int optype)
72{
73 int *val, rc = 0;
74 spin_lock(&server->req_lock);
75 val = server->ops->get_credits_field(server, optype);
76 *val += add;
141891f4
SF		 77 if (*val > 65000) {
78 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
79 printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
80 }
28ea5290 81 server->in_flight--;
ec2e4523 82 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
28ea5290 83 rc = change_conf(server);
983c88a4
PS		 84 /*
85 * Sometimes server returns 0 credits on oplock break ack - we need to
86 * rebalance credits in this case.
87 */
88 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
89 server->oplocks) {
90 if (server->credits > 1) {
91 server->credits--;
92 server->oplock_credits++;
93 }
94 }
28ea5290
PS		 95 spin_unlock(&server->req_lock);
96 wake_up(&server->request_q);
97 if (rc)
98 cifs_reconnect(server);
99}
100
101static void
102smb2_set_credits(struct TCP_Server_Info *server, const int val)
103{
104 spin_lock(&server->req_lock);
105 server->credits = val;
106 spin_unlock(&server->req_lock);
107}
108
109static int *
110smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
111{
112 switch (optype) {
113 case CIFS_ECHO_OP:
114 return &server->echo_credits;
115 case CIFS_OBREAK_OP:
116 return &server->oplock_credits;
117 default:
118 return &server->credits;
119 }
120}
121
122static unsigned int
123smb2_get_credits(struct mid_q_entry *mid)
124{
31473fc4
PS		 125 struct smb2_sync_hdr *shdr = get_sync_hdr(mid->resp_buf);
126
127 return le16_to_cpu(shdr->CreditRequest);
28ea5290 128}
2dc7e1c0 129
cb7e9eab
PS		 130static int
131smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
132 unsigned int *num, unsigned int *credits)
133{
134 int rc = 0;
135 unsigned int scredits;
136
137 spin_lock(&server->req_lock);
138 while (1) {
139 if (server->credits <= 0) {
140 spin_unlock(&server->req_lock);
141 cifs_num_waiters_inc(server);
142 rc = wait_event_killable(server->request_q,
143 has_credits(server, &server->credits));
144 cifs_num_waiters_dec(server);
145 if (rc)
146 return rc;
147 spin_lock(&server->req_lock);
148 } else {
149 if (server->tcpStatus == CifsExiting) {
150 spin_unlock(&server->req_lock);
151 return -ENOENT;
152 }
153
154 scredits = server->credits;
155 /* can deadlock with reopen */
156 if (scredits == 1) {
157 *num = SMB2_MAX_BUFFER_SIZE;
158 *credits = 0;
159 break;
160 }
161
162 /* leave one credit for a possible reopen */
163 scredits--;
164 *num = min_t(unsigned int, size,
165 scredits * SMB2_MAX_BUFFER_SIZE);
166
167 *credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
168 server->credits -= *credits;
169 server->in_flight++;
170 break;
171 }
172 }
173 spin_unlock(&server->req_lock);
174 return rc;
175}
176
2dc7e1c0
PS		 177static __u64
178smb2_get_next_mid(struct TCP_Server_Info *server)
179{
180 __u64 mid;
181 /* for SMB2 we need the current value */
182 spin_lock(&GlobalMid_Lock);
183 mid = server->CurrentMid++;
184 spin_unlock(&GlobalMid_Lock);
185 return mid;
186}
1080ef75 187
093b2bda
PS		 188static struct mid_q_entry *
189smb2_find_mid(struct TCP_Server_Info *server, char *buf)
190{
191 struct mid_q_entry *mid;
31473fc4
PS		 192 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
193 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
093b2bda 194
31473fc4 195 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
373512ec
SF		 196 cifs_dbg(VFS, "encrypted frame parsing not supported yet");
197 return NULL;
198 }
199
093b2bda
PS		 200 spin_lock(&GlobalMid_Lock);
201 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
9235d098 202 if ((mid->mid == wire_mid) &&
093b2bda 203 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
31473fc4 204 (mid->command == shdr->Command)) {
093b2bda
PS		 205 spin_unlock(&GlobalMid_Lock);
206 return mid;
207 }
208 }
209 spin_unlock(&GlobalMid_Lock);
210 return NULL;
211}
212
213static void
214smb2_dump_detail(void *buf)
215{
216#ifdef CONFIG_CIFS_DEBUG2
31473fc4 217 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
093b2bda 218
f96637be 219 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
31473fc4
PS		 220 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
221 shdr->ProcessId);
222 cifs_dbg(VFS, "smb buf %p len %u\n", buf, smb2_calc_size(buf));
093b2bda
PS		 223#endif
224}
225
ec2e4523
PS		 226static bool
227smb2_need_neg(struct TCP_Server_Info *server)
228{
229 return server->max_read == 0;
230}
231
232static int
233smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
234{
235 int rc;
236 ses->server->CurrentMid = 0;
237 rc = SMB2_negotiate(xid, ses);
238 /* BB we probably don't need to retry with modern servers */
239 if (rc == -EAGAIN)
240 rc = -EHOSTDOWN;
241 return rc;
242}
243
3a3bab50
PS		 244static unsigned int
245smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
246{
247 struct TCP_Server_Info *server = tcon->ses->server;
248 unsigned int wsize;
249
250 /* start with specified wsize, or default */
251 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
252 wsize = min_t(unsigned int, wsize, server->max_write);
cb7e9eab
PS		 253
254 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
255 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 256
3a3bab50
PS		 257 return wsize;
258}
259
260static unsigned int
261smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
262{
263 struct TCP_Server_Info *server = tcon->ses->server;
264 unsigned int rsize;
265
266 /* start with specified rsize, or default */
267 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
268 rsize = min_t(unsigned int, rsize, server->max_read);
bed9da02
PS		 269
270 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
271 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 272
3a3bab50
PS		 273 return rsize;
274}
275
c481e9fe
SF		 276#ifdef CONFIG_CIFS_STATS2
277static int
278SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
279{
280 int rc;
281 unsigned int ret_data_len = 0;
282 struct network_interface_info_ioctl_rsp *out_buf;
283
284 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
285 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
51146625 286 false /* use_ipc */,
c481e9fe
SF		 287 NULL /* no data input */, 0 /* no data input */,
288 (char **)&out_buf, &ret_data_len);
9ffc5412
SF		 289 if (rc != 0)
290 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
291 else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) {
292 cifs_dbg(VFS, "server returned bad net interface info buf\n");
293 rc = -EINVAL;
294 } else {
c481e9fe
SF		 295 /* Dump info on first interface */
296 cifs_dbg(FYI, "Adapter Capability 0x%x\t",
297 le32_to_cpu(out_buf->Capability));
298 cifs_dbg(FYI, "Link Speed %lld\n",
299 le64_to_cpu(out_buf->LinkSpeed));
9ffc5412 300 }
24df1483 301 kfree(out_buf);
c481e9fe
SF		 302 return rc;
303}
304#endif /* STATS2 */
305
af6a12ea
SF		 306static void
307smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
308{
309 int rc;
310 __le16 srch_path = 0; /* Null - open root of share */
311 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
312 struct cifs_open_parms oparms;
313 struct cifs_fid fid;
314
315 oparms.tcon = tcon;
316 oparms.desired_access = FILE_READ_ATTRIBUTES;
317 oparms.disposition = FILE_OPEN;
318 oparms.create_options = 0;
319 oparms.fid = &fid;
320 oparms.reconnect = false;
321
322 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
323 if (rc)
324 return;
325
c481e9fe
SF		 326#ifdef CONFIG_CIFS_STATS2
327 SMB3_request_interfaces(xid, tcon);
328#endif /* STATS2 */
329
af6a12ea
SF		 330 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
331 FS_ATTRIBUTE_INFORMATION);
332 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
333 FS_DEVICE_INFORMATION);
334 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
335 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
336 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
337 return;
338}
339
34f62640
SF		 340static void
341smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
342{
343 int rc;
344 __le16 srch_path = 0; /* Null - open root of share */
345 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
346 struct cifs_open_parms oparms;
347 struct cifs_fid fid;
348
349 oparms.tcon = tcon;
350 oparms.desired_access = FILE_READ_ATTRIBUTES;
351 oparms.disposition = FILE_OPEN;
352 oparms.create_options = 0;
353 oparms.fid = &fid;
354 oparms.reconnect = false;
355
356 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
357 if (rc)
358 return;
359
2167114c
SF		 360 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
361 FS_ATTRIBUTE_INFORMATION);
362 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
363 FS_DEVICE_INFORMATION);
34f62640
SF		 364 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
365 return;
366}
367
2503a0db
PS		 368static int
369smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
370 struct cifs_sb_info *cifs_sb, const char *full_path)
371{
372 int rc;
2503a0db 373 __le16 *utf16_path;
2e44b288 374 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 375 struct cifs_open_parms oparms;
376 struct cifs_fid fid;
2503a0db
PS		 377
378 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
379 if (!utf16_path)
380 return -ENOMEM;
381
064f6047
PS		 382 oparms.tcon = tcon;
383 oparms.desired_access = FILE_READ_ATTRIBUTES;
384 oparms.disposition = FILE_OPEN;
385 oparms.create_options = 0;
386 oparms.fid = &fid;
9cbc0b73 387 oparms.reconnect = false;
064f6047 388
b42bf888 389 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
2503a0db
PS		 390 if (rc) {
391 kfree(utf16_path);
392 return rc;
393 }
394
064f6047 395 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2503a0db
PS		 396 kfree(utf16_path);
397 return rc;
398}
399
be4cb9e3
PS		 400static int
401smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
402 struct cifs_sb_info *cifs_sb, const char *full_path,
403 u64 *uniqueid, FILE_ALL_INFO *data)
404{
405 *uniqueid = le64_to_cpu(data->IndexNumber);
406 return 0;
407}
408
b7546bc5
PS		 409static int
410smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
411 struct cifs_fid *fid, FILE_ALL_INFO *data)
412{
413 int rc;
414 struct smb2_file_all_info *smb2_data;
415
1bbe4997 416 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
b7546bc5
PS		 417 GFP_KERNEL);
418 if (smb2_data == NULL)
419 return -ENOMEM;
420
421 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
422 smb2_data);
423 if (!rc)
424 move_smb2_info_to_cifs(data, smb2_data);
425 kfree(smb2_data);
426 return rc;
427}
428
9094fad1
PS		 429static bool
430smb2_can_echo(struct TCP_Server_Info *server)
431{
432 return server->echoes;
433}
434
d60622eb
PS		 435static void
436smb2_clear_stats(struct cifs_tcon *tcon)
437{
438#ifdef CONFIG_CIFS_STATS
439 int i;
440 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
441 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
442 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
443 }
444#endif
445}
446
769ee6a4
SF		 447static void
448smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
449{
450 seq_puts(m, "\n\tShare Capabilities:");
451 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
452 seq_puts(m, " DFS,");
453 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
454 seq_puts(m, " CONTINUOUS AVAILABILITY,");
455 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
456 seq_puts(m, " SCALEOUT,");
457 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
458 seq_puts(m, " CLUSTER,");
459 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
460 seq_puts(m, " ASYMMETRIC,");
461 if (tcon->capabilities == 0)
462 seq_puts(m, " None");
af6a12ea
SF		 463 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
464 seq_puts(m, " Aligned,");
465 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
466 seq_puts(m, " Partition Aligned,");
467 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
468 seq_puts(m, " SSD,");
469 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
470 seq_puts(m, " TRIM-support,");
471
769ee6a4 472 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
af6a12ea
SF		 473 if (tcon->perf_sector_size)
474 seq_printf(m, "\tOptimal sector size: 0x%x",
475 tcon->perf_sector_size);
769ee6a4
SF		 476}
477
d60622eb
PS		 478static void
479smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
480{
481#ifdef CONFIG_CIFS_STATS
482 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
483 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
484 seq_printf(m, "\nNegotiates: %d sent %d failed",
485 atomic_read(&sent[SMB2_NEGOTIATE_HE]),
486 atomic_read(&failed[SMB2_NEGOTIATE_HE]));
487 seq_printf(m, "\nSessionSetups: %d sent %d failed",
488 atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
489 atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
d60622eb
PS		 490 seq_printf(m, "\nLogoffs: %d sent %d failed",
491 atomic_read(&sent[SMB2_LOGOFF_HE]),
492 atomic_read(&failed[SMB2_LOGOFF_HE]));
493 seq_printf(m, "\nTreeConnects: %d sent %d failed",
494 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
495 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
496 seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
497 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
498 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
499 seq_printf(m, "\nCreates: %d sent %d failed",
500 atomic_read(&sent[SMB2_CREATE_HE]),
501 atomic_read(&failed[SMB2_CREATE_HE]));
502 seq_printf(m, "\nCloses: %d sent %d failed",
503 atomic_read(&sent[SMB2_CLOSE_HE]),
504 atomic_read(&failed[SMB2_CLOSE_HE]));
505 seq_printf(m, "\nFlushes: %d sent %d failed",
506 atomic_read(&sent[SMB2_FLUSH_HE]),
507 atomic_read(&failed[SMB2_FLUSH_HE]));
508 seq_printf(m, "\nReads: %d sent %d failed",
509 atomic_read(&sent[SMB2_READ_HE]),
510 atomic_read(&failed[SMB2_READ_HE]));
511 seq_printf(m, "\nWrites: %d sent %d failed",
512 atomic_read(&sent[SMB2_WRITE_HE]),
513 atomic_read(&failed[SMB2_WRITE_HE]));
514 seq_printf(m, "\nLocks: %d sent %d failed",
515 atomic_read(&sent[SMB2_LOCK_HE]),
516 atomic_read(&failed[SMB2_LOCK_HE]));
517 seq_printf(m, "\nIOCTLs: %d sent %d failed",
518 atomic_read(&sent[SMB2_IOCTL_HE]),
519 atomic_read(&failed[SMB2_IOCTL_HE]));
520 seq_printf(m, "\nCancels: %d sent %d failed",
521 atomic_read(&sent[SMB2_CANCEL_HE]),
522 atomic_read(&failed[SMB2_CANCEL_HE]));
523 seq_printf(m, "\nEchos: %d sent %d failed",
524 atomic_read(&sent[SMB2_ECHO_HE]),
525 atomic_read(&failed[SMB2_ECHO_HE]));
526 seq_printf(m, "\nQueryDirectories: %d sent %d failed",
527 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
528 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
529 seq_printf(m, "\nChangeNotifies: %d sent %d failed",
530 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
531 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
532 seq_printf(m, "\nQueryInfos: %d sent %d failed",
533 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
534 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
535 seq_printf(m, "\nSetInfos: %d sent %d failed",
536 atomic_read(&sent[SMB2_SET_INFO_HE]),
537 atomic_read(&failed[SMB2_SET_INFO_HE]));
538 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
539 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
540 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
541#endif
542}
543
f0df737e
PS		 544static void
545smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
546{
2b0143b5 547 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
53ef1016
PS		 548 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
549
f0df737e
PS		 550 cfile->fid.persistent_fid = fid->persistent_fid;
551 cfile->fid.volatile_fid = fid->volatile_fid;
42873b0a
PS		 552 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
553 &fid->purge_cache);
18cceb6a 554 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
94f87371 555 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
f0df737e
PS		 556}
557
760ad0ca 558static void
f0df737e
PS		 559smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
560 struct cifs_fid *fid)
561{
760ad0ca 562 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
f0df737e
PS		 563}
564
41c1358e
SF		 565static int
566SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
567 u64 persistent_fid, u64 volatile_fid,
568 struct copychunk_ioctl *pcchunk)
569{
570 int rc;
571 unsigned int ret_data_len;
572 struct resume_key_req *res_key;
573
574 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
575 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
51146625 576 false /* use_ipc */,
41c1358e
SF		 577 NULL, 0 /* no input */,
578 (char **)&res_key, &ret_data_len);
579
580 if (rc) {
581 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
582 goto req_res_key_exit;
583 }
584 if (ret_data_len < sizeof(struct resume_key_req)) {
585 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
586 rc = -EINVAL;
587 goto req_res_key_exit;
588 }
589 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
590
591req_res_key_exit:
592 kfree(res_key);
593 return rc;
594}
595
620d8745 596static ssize_t
312bbc59 597smb2_copychunk_range(const unsigned int xid,
41c1358e
SF		 598 struct cifsFileInfo *srcfile,
599 struct cifsFileInfo *trgtfile, u64 src_off,
600 u64 len, u64 dest_off)
601{
602 int rc;
603 unsigned int ret_data_len;
604 struct copychunk_ioctl *pcchunk;
9bf0c9cd
SF		 605 struct copychunk_ioctl_rsp *retbuf = NULL;
606 struct cifs_tcon *tcon;
607 int chunks_copied = 0;
608 bool chunk_sizes_updated = false;
620d8745 609 ssize_t bytes_written, total_bytes_written = 0;
41c1358e
SF		 610
611 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
612
613 if (pcchunk == NULL)
614 return -ENOMEM;
615
312bbc59 616 cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
41c1358e
SF		 617 /* Request a key from the server to identify the source of the copy */
618 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
619 srcfile->fid.persistent_fid,
620 srcfile->fid.volatile_fid, pcchunk);
621
622 /* Note: request_res_key sets res_key null only if rc !=0 */
623 if (rc)
9bf0c9cd 624 goto cchunk_out;
41c1358e
SF		 625
626 /* For now array only one chunk long, will make more flexible later */
bc09d141 627 pcchunk->ChunkCount = cpu_to_le32(1);
41c1358e 628 pcchunk->Reserved = 0;
41c1358e
SF		 629 pcchunk->Reserved2 = 0;
630
9bf0c9cd 631 tcon = tlink_tcon(trgtfile->tlink);
41c1358e 632
9bf0c9cd
SF		 633 while (len > 0) {
634 pcchunk->SourceOffset = cpu_to_le64(src_off);
635 pcchunk->TargetOffset = cpu_to_le64(dest_off);
636 pcchunk->Length =
637 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
41c1358e 638
9bf0c9cd
SF		 639 /* Request server copy to target from src identified by key */
640 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
641 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
51146625
AA		 642 true /* is_fsctl */, false /* use_ipc */,
643 (char *)pcchunk,
9bf0c9cd
SF		 644 sizeof(struct copychunk_ioctl), (char **)&retbuf,
645 &ret_data_len);
646 if (rc == 0) {
647 if (ret_data_len !=
648 sizeof(struct copychunk_ioctl_rsp)) {
649 cifs_dbg(VFS, "invalid cchunk response size\n");
650 rc = -EIO;
651 goto cchunk_out;
652 }
653 if (retbuf->TotalBytesWritten == 0) {
654 cifs_dbg(FYI, "no bytes copied\n");
655 rc = -EIO;
656 goto cchunk_out;
657 }
658 /*
659 * Check if server claimed to write more than we asked
660 */
661 if (le32_to_cpu(retbuf->TotalBytesWritten) >
662 le32_to_cpu(pcchunk->Length)) {
663 cifs_dbg(VFS, "invalid copy chunk response\n");
664 rc = -EIO;
665 goto cchunk_out;
666 }
667 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
668 cifs_dbg(VFS, "invalid num chunks written\n");
669 rc = -EIO;
670 goto cchunk_out;
671 }
672 chunks_copied++;
673
620d8745
SP		 674 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
675 src_off += bytes_written;
676 dest_off += bytes_written;
677 len -= bytes_written;
678 total_bytes_written += bytes_written;
9bf0c9cd 679
620d8745 680 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
9bf0c9cd
SF		 681 le32_to_cpu(retbuf->ChunksWritten),
682 le32_to_cpu(retbuf->ChunkBytesWritten),
620d8745 683 bytes_written);
9bf0c9cd
SF		 684 } else if (rc == -EINVAL) {
685 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
686 goto cchunk_out;
687
688 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
689 le32_to_cpu(retbuf->ChunksWritten),
690 le32_to_cpu(retbuf->ChunkBytesWritten),
691 le32_to_cpu(retbuf->TotalBytesWritten));
692
693 /*
694 * Check if this is the first request using these sizes,
695 * (ie check if copy succeed once with original sizes
696 * and check if the server gave us different sizes after
697 * we already updated max sizes on previous request).
698 * if not then why is the server returning an error now
699 */
700 if ((chunks_copied != 0) || chunk_sizes_updated)
701 goto cchunk_out;
702
703 /* Check that server is not asking us to grow size */
704 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
705 tcon->max_bytes_chunk)
706 tcon->max_bytes_chunk =
707 le32_to_cpu(retbuf->ChunkBytesWritten);
708 else
709 goto cchunk_out; /* server gave us bogus size */
710
711 /* No need to change MaxChunks since already set to 1 */
712 chunk_sizes_updated = true;
2477bc58
SP		 713 } else
714 goto cchunk_out;
9bf0c9cd 715 }
41c1358e 716
9bf0c9cd 717cchunk_out:
41c1358e 718 kfree(pcchunk);
24df1483 719 kfree(retbuf);
620d8745
SP		 720 if (rc)
721 return rc;
722 else
723 return total_bytes_written;
41c1358e
SF		 724}
725
7a5cfb19
PS		 726static int
727smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
728 struct cifs_fid *fid)
729{
730 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
731}
732
09a4707e
PS		 733static unsigned int
734smb2_read_data_offset(char *buf)
735{
736 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
737 return rsp->DataOffset;
738}
739
740static unsigned int
741smb2_read_data_length(char *buf)
742{
743 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
744 return le32_to_cpu(rsp->DataLength);
745}
746
d8e05039
PS		 747
748static int
db8b631d 749smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
d8e05039
PS		 750 struct cifs_io_parms *parms, unsigned int *bytes_read,
751 char **buf, int *buf_type)
752{
db8b631d
SF		 753 parms->persistent_fid = pfid->persistent_fid;
754 parms->volatile_fid = pfid->volatile_fid;
d8e05039
PS		 755 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
756}
757
009d3443 758static int
db8b631d 759smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
009d3443
PS		 760 struct cifs_io_parms *parms, unsigned int *written,
761 struct kvec *iov, unsigned long nr_segs)
762{
763
db8b631d
SF		 764 parms->persistent_fid = pfid->persistent_fid;
765 parms->volatile_fid = pfid->volatile_fid;
009d3443
PS		 766 return SMB2_write(xid, parms, written, iov, nr_segs);
767}
768
d43cc793
SF		 769/* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
770static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
771 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
772{
773 struct cifsInodeInfo *cifsi;
774 int rc;
775
776 cifsi = CIFS_I(inode);
777
778 /* if file already sparse don't bother setting sparse again */
779 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
780 return true; /* already sparse */
781
782 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
783 return true; /* already not sparse */
784
785 /*
786 * Can't check for sparse support on share the usual way via the
787 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
788 * since Samba server doesn't set the flag on the share, yet
789 * supports the set sparse FSCTL and returns sparse correctly
790 * in the file attributes. If we fail setting sparse though we
791 * mark that server does not support sparse files for this share
792 * to avoid repeatedly sending the unsupported fsctl to server
793 * if the file is repeatedly extended.
794 */
795 if (tcon->broken_sparse_sup)
796 return false;
797
798 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
799 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
51146625
AA		 800 true /* is_fctl */, false /* use_ipc */,
801 &setsparse, 1, NULL, NULL);
d43cc793
SF		 802 if (rc) {
803 tcon->broken_sparse_sup = true;
804 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
805 return false;
806 }
807
808 if (setsparse)
809 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
810 else
811 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
812
813 return true;
814}
815
c839ff24
PS		 816static int
817smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
818 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
819{
820 __le64 eof = cpu_to_le64(size);
3d1a3745
SF		 821 struct inode *inode;
822
823 /*
824 * If extending file more than one page make sparse. Many Linux fs
825 * make files sparse by default when extending via ftruncate
826 */
2b0143b5 827 inode = d_inode(cfile->dentry);
3d1a3745
SF		 828
829 if (!set_alloc && (size > inode->i_size + 8192)) {
3d1a3745 830 __u8 set_sparse = 1;
d43cc793
SF		 831
832 /* whether set sparse succeeds or not, extend the file */
833 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
3d1a3745
SF		 834 }
835
c839ff24 836 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
f29ebb47 837 cfile->fid.volatile_fid, cfile->pid, &eof, false);
c839ff24
PS		 838}
839
02b16665
SF		 840static int
841smb2_duplicate_extents(const unsigned int xid,
842 struct cifsFileInfo *srcfile,
843 struct cifsFileInfo *trgtfile, u64 src_off,
844 u64 len, u64 dest_off)
845{
846 int rc;
847 unsigned int ret_data_len;
02b16665
SF		 848 struct duplicate_extents_to_file dup_ext_buf;
849 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
850
851 /* server fileays advertise duplicate extent support with this flag */
852 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
853 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
854 return -EOPNOTSUPP;
855
856 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
857 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
858 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
859 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
860 dup_ext_buf.ByteCount = cpu_to_le64(len);
861 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
862 src_off, dest_off, len);
863
864 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
865 if (rc)
866 goto duplicate_extents_out;
867
868 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
869 trgtfile->fid.volatile_fid,
870 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
51146625
AA		 871 true /* is_fsctl */, false /* use_ipc */,
872 (char *)&dup_ext_buf,
02b16665 873 sizeof(struct duplicate_extents_to_file),
24df1483 874 NULL,
02b16665
SF		 875 &ret_data_len);
876
877 if (ret_data_len > 0)
878 cifs_dbg(FYI, "non-zero response length in duplicate extents");
879
880duplicate_extents_out:
881 return rc;
882}
02b16665 883
64a5cfa6
SF		 884static int
885smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
886 struct cifsFileInfo *cfile)
887{
888 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
889 cfile->fid.volatile_fid);
890}
891
b3152e2c
SF		 892static int
893smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
894 struct cifsFileInfo *cfile)
895{
896 struct fsctl_set_integrity_information_req integr_info;
b3152e2c
SF		 897 unsigned int ret_data_len;
898
899 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
900 integr_info.Flags = 0;
901 integr_info.Reserved = 0;
902
903 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
904 cfile->fid.volatile_fid,
905 FSCTL_SET_INTEGRITY_INFORMATION,
51146625
AA		 906 true /* is_fsctl */, false /* use_ipc */,
907 (char *)&integr_info,
b3152e2c 908 sizeof(struct fsctl_set_integrity_information_req),
24df1483 909 NULL,
b3152e2c
SF		 910 &ret_data_len);
911
912}
913
834170c8
SF		 914static int
915smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
916 struct cifsFileInfo *cfile, void __user *ioc_buf)
917{
918 char *retbuf = NULL;
919 unsigned int ret_data_len = 0;
920 int rc;
921 struct smb_snapshot_array snapshot_in;
922
923 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
924 cfile->fid.volatile_fid,
925 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
51146625
AA		 926 true /* is_fsctl */, false /* use_ipc */,
927 NULL, 0 /* no input data */,
834170c8
SF		 928 (char **)&retbuf,
929 &ret_data_len);
930 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
931 rc, ret_data_len);
932 if (rc)
933 return rc;
934
935 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
936 /* Fixup buffer */
937 if (copy_from_user(&snapshot_in, ioc_buf,
938 sizeof(struct smb_snapshot_array))) {
939 rc = -EFAULT;
940 kfree(retbuf);
941 return rc;
942 }
943 if (snapshot_in.snapshot_array_size < sizeof(struct smb_snapshot_array)) {
944 rc = -ERANGE;
945 return rc;
946 }
947
948 if (ret_data_len > snapshot_in.snapshot_array_size)
949 ret_data_len = snapshot_in.snapshot_array_size;
950
951 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
952 rc = -EFAULT;
953 }
954
955 kfree(retbuf);
956 return rc;
957}
958
d324f08d
PS		 959static int
960smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
961 const char *path, struct cifs_sb_info *cifs_sb,
962 struct cifs_fid *fid, __u16 search_flags,
963 struct cifs_search_info *srch_inf)
964{
965 __le16 *utf16_path;
966 int rc;
2e44b288 967 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047 968 struct cifs_open_parms oparms;
d324f08d
PS		 969
970 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
971 if (!utf16_path)
972 return -ENOMEM;
973
064f6047
PS		 974 oparms.tcon = tcon;
975 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
976 oparms.disposition = FILE_OPEN;
977 oparms.create_options = 0;
978 oparms.fid = fid;
9cbc0b73 979 oparms.reconnect = false;
064f6047 980
b42bf888 981 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
d324f08d
PS		 982 kfree(utf16_path);
983 if (rc) {
f96637be 984 cifs_dbg(VFS, "open dir failed\n");
d324f08d
PS		 985 return rc;
986 }
987
988 srch_inf->entries_in_buffer = 0;
989 srch_inf->index_of_last_entry = 0;
d324f08d 990
064f6047
PS		 991 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
992 fid->volatile_fid, 0, srch_inf);
d324f08d 993 if (rc) {
f96637be 994 cifs_dbg(VFS, "query directory failed\n");
064f6047 995 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
d324f08d
PS		 996 }
997 return rc;
998}
999
1000static int
1001smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
1002 struct cifs_fid *fid, __u16 search_flags,
1003 struct cifs_search_info *srch_inf)
1004{
1005 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
1006 fid->volatile_fid, 0, srch_inf);
1007}
1008
1009static int
1010smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1011 struct cifs_fid *fid)
1012{
1013 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1014}
1015
2e44b288
PS		 1016/*
1017* If we negotiate SMB2 protocol and get STATUS_PENDING - update
1018* the number of credits and return true. Otherwise - return false.
1019*/
1020static bool
1021smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
1022{
31473fc4 1023 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
2e44b288 1024
31473fc4 1025 if (shdr->Status != STATUS_PENDING)
2e44b288
PS		 1026 return false;
1027
1028 if (!length) {
1029 spin_lock(&server->req_lock);
31473fc4 1030 server->credits += le16_to_cpu(shdr->CreditRequest);
2e44b288
PS		 1031 spin_unlock(&server->req_lock);
1032 wake_up(&server->request_q);
1033 }
1034
1035 return true;
1036}
1037
983c88a4
PS		 1038static int
1039smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1040 struct cifsInodeInfo *cinode)
1041{
0822f514
PS		 1042 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1043 return SMB2_lease_break(0, tcon, cinode->lease_key,
1044 smb2_get_lease_state(cinode));
1045
983c88a4
PS		 1046 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1047 fid->volatile_fid,
18cceb6a 1048 CIFS_CACHE_READ(cinode) ? 1 : 0);
983c88a4
PS		 1049}
1050
6fc05c25
PS		 1051static int
1052smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1053 struct kstatfs *buf)
1054{
1055 int rc;
6fc05c25
PS		 1056 __le16 srch_path = 0; /* Null - open root of share */
1057 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 1058 struct cifs_open_parms oparms;
1059 struct cifs_fid fid;
1060
1061 oparms.tcon = tcon;
1062 oparms.desired_access = FILE_READ_ATTRIBUTES;
1063 oparms.disposition = FILE_OPEN;
1064 oparms.create_options = 0;
1065 oparms.fid = &fid;
9cbc0b73 1066 oparms.reconnect = false;
6fc05c25 1067
b42bf888 1068 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
6fc05c25
PS		 1069 if (rc)
1070 return rc;
1071 buf->f_type = SMB2_MAGIC_NUMBER;
064f6047
PS		 1072 rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
1073 buf);
1074 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
6fc05c25
PS		 1075 return rc;
1076}
1077
027e8eec
PS		 1078static bool
1079smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
1080{
1081 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
1082 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
1083}
1084
f7ba7fe6
PS		 1085static int
1086smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
1087 __u64 length, __u32 type, int lock, int unlock, bool wait)
1088{
1089 if (unlock && !lock)
1090 type = SMB2_LOCKFLAG_UNLOCK;
1091 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
1092 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
1093 current->tgid, length, offset, type, wait);
1094}
1095
b8c32dbb
PS		 1096static void
1097smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
1098{
1099 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
1100}
1101
1102static void
1103smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
1104{
1105 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
1106}
1107
1108static void
1109smb2_new_lease_key(struct cifs_fid *fid)
1110{
fa70b87c 1111 generate_random_uuid(fid->lease_key);
b8c32dbb
PS		 1112}
1113
9d49640a
AA		 1114static int
1115smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
1116 const char *search_name,
1117 struct dfs_info3_param **target_nodes,
1118 unsigned int *num_of_nodes,
1119 const struct nls_table *nls_codepage, int remap)
1120{
1121 int rc;
1122 __le16 *utf16_path = NULL;
1123 int utf16_path_len = 0;
1124 struct cifs_tcon *tcon;
1125 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
1126 struct get_dfs_referral_rsp *dfs_rsp = NULL;
1127 u32 dfs_req_size = 0, dfs_rsp_size = 0;
1128
1129 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
1130
1131 /*
1132 * Use any tcon from the current session. Here, the first one.
1133 */
1134 spin_lock(&cifs_tcp_ses_lock);
1135 tcon = list_first_entry_or_null(&ses->tcon_list, struct cifs_tcon,
1136 tcon_list);
1137 if (tcon)
1138 tcon->tc_count++;
1139 spin_unlock(&cifs_tcp_ses_lock);
1140
1141 if (!tcon) {
1142 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
1143 ses);
1144 rc = -ENOTCONN;
1145 goto out;
1146 }
1147
1148 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
1149 &utf16_path_len,
1150 nls_codepage, remap);
1151 if (!utf16_path) {
1152 rc = -ENOMEM;
1153 goto out;
1154 }
1155
1156 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
1157 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
1158 if (!dfs_req) {
1159 rc = -ENOMEM;
1160 goto out;
1161 }
1162
1163 /* Highest DFS referral version understood */
1164 dfs_req->MaxReferralLevel = DFS_VERSION;
1165
1166 /* Path to resolve in an UTF-16 null-terminated string */
1167 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
1168
1169 do {
1170 /* try first with IPC */
1171 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1172 FSCTL_DFS_GET_REFERRALS,
1173 true /* is_fsctl */, true /* use_ipc */,
1174 (char *)dfs_req, dfs_req_size,
1175 (char **)&dfs_rsp, &dfs_rsp_size);
1176 if (rc == -ENOTCONN) {
1177 /* try with normal tcon */
1178 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1179 FSCTL_DFS_GET_REFERRALS,
1180 true /* is_fsctl */, false /*use_ipc*/,
1181 (char *)dfs_req, dfs_req_size,
1182 (char **)&dfs_rsp, &dfs_rsp_size);
1183 }
1184 } while (rc == -EAGAIN);
1185
1186 if (rc) {
1187 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
1188 goto out;
1189 }
1190
1191 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
1192 num_of_nodes, target_nodes,
1193 nls_codepage, remap, search_name,
1194 true /* is_unicode */);
1195 if (rc) {
1196 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
1197 goto out;
1198 }
1199
1200 out:
1201 if (tcon) {
1202 spin_lock(&cifs_tcp_ses_lock);
1203 tcon->tc_count--;
1204 spin_unlock(&cifs_tcp_ses_lock);
1205 }
1206 kfree(utf16_path);
1207 kfree(dfs_req);
1208 kfree(dfs_rsp);
1209 return rc;
1210}
7893242e
PS		 1211#define SMB2_SYMLINK_STRUCT_SIZE \
1212 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
1213
b42bf888
PS		 1214static int
1215smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
1216 const char *full_path, char **target_path,
1217 struct cifs_sb_info *cifs_sb)
1218{
1219 int rc;
1220 __le16 *utf16_path;
1221 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1222 struct cifs_open_parms oparms;
1223 struct cifs_fid fid;
1224 struct smb2_err_rsp *err_buf = NULL;
1225 struct smb2_symlink_err_rsp *symlink;
7893242e
PS		 1226 unsigned int sub_len;
1227 unsigned int sub_offset;
1228 unsigned int print_len;
1229 unsigned int print_offset;
b42bf888
PS		 1230
1231 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
1232
1233 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
1234 if (!utf16_path)
1235 return -ENOMEM;
1236
1237 oparms.tcon = tcon;
1238 oparms.desired_access = FILE_READ_ATTRIBUTES;
1239 oparms.disposition = FILE_OPEN;
1240 oparms.create_options = 0;
1241 oparms.fid = &fid;
1242 oparms.reconnect = false;
1243
1244 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf);
1245
1246 if (!rc || !err_buf) {
1247 kfree(utf16_path);
1248 return -ENOENT;
1249 }
7893242e
PS		 1250
1251 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1252 get_rfc1002_length(err_buf) + 4 < SMB2_SYMLINK_STRUCT_SIZE) {
1253 kfree(utf16_path);
1254 return -ENOENT;
1255 }
1256
b42bf888
PS		 1257 /* open must fail on symlink - reset rc */
1258 rc = 0;
1259 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
1260 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
1261 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
7893242e
PS		 1262 print_len = le16_to_cpu(symlink->PrintNameLength);
1263 print_offset = le16_to_cpu(symlink->PrintNameOffset);
1264
1265 if (get_rfc1002_length(err_buf) + 4 <
1266 SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
1267 kfree(utf16_path);
1268 return -ENOENT;
1269 }
1270
1271 if (get_rfc1002_length(err_buf) + 4 <
1272 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
1273 kfree(utf16_path);
1274 return -ENOENT;
1275 }
1276
b42bf888
PS		 1277 *target_path = cifs_strndup_from_utf16(
1278 (char *)symlink->PathBuffer + sub_offset,
1279 sub_len, true, cifs_sb->local_nls);
1280 if (!(*target_path)) {
1281 kfree(utf16_path);
1282 return -ENOMEM;
1283 }
1284 convert_delimiter(*target_path, '/');
1285 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
1286 kfree(utf16_path);
1287 return rc;
1288}
1289
30175628
SF		 1290static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
1291 loff_t offset, loff_t len, bool keep_size)
1292{
1293 struct inode *inode;
1294 struct cifsInodeInfo *cifsi;
1295 struct cifsFileInfo *cfile = file->private_data;
1296 struct file_zero_data_information fsctl_buf;
1297 long rc;
1298 unsigned int xid;
1299
1300 xid = get_xid();
1301
2b0143b5 1302 inode = d_inode(cfile->dentry);
30175628
SF		 1303 cifsi = CIFS_I(inode);
1304
1305 /* if file not oplocked can't be sure whether asking to extend size */
1306 if (!CIFS_CACHE_READ(cifsi))
1307 if (keep_size == false)
1308 return -EOPNOTSUPP;
1309
2bb93d24 1310 /*
30175628
SF		 1311 * Must check if file sparse since fallocate -z (zero range) assumes
1312 * non-sparse allocation
1313 */
1314 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE))
1315 return -EOPNOTSUPP;
1316
1317 /*
1318 * need to make sure we are not asked to extend the file since the SMB3
1319 * fsctl does not change the file size. In the future we could change
1320 * this to zero the first part of the range then set the file size
1321 * which for a non sparse file would zero the newly extended range
1322 */
1323 if (keep_size == false)
1324 if (i_size_read(inode) < offset + len)
1325 return -EOPNOTSUPP;
1326
1327 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1328
1329 fsctl_buf.FileOffset = cpu_to_le64(offset);
1330 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1331
1332 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1333 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
51146625
AA		 1334 true /* is_fctl */, false /* use_ipc */,
1335 (char *)&fsctl_buf,
30175628
SF		 1336 sizeof(struct file_zero_data_information), NULL, NULL);
1337 free_xid(xid);
1338 return rc;
1339}
1340
31742c5a
SF		 1341static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
1342 loff_t offset, loff_t len)
1343{
1344 struct inode *inode;
1345 struct cifsInodeInfo *cifsi;
1346 struct cifsFileInfo *cfile = file->private_data;
1347 struct file_zero_data_information fsctl_buf;
1348 long rc;
1349 unsigned int xid;
1350 __u8 set_sparse = 1;
1351
1352 xid = get_xid();
1353
2b0143b5 1354 inode = d_inode(cfile->dentry);
31742c5a
SF		 1355 cifsi = CIFS_I(inode);
1356
1357 /* Need to make file sparse, if not already, before freeing range. */
1358 /* Consider adding equivalent for compressed since it could also work */
1359 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse))
1360 return -EOPNOTSUPP;
1361
1362 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1363
1364 fsctl_buf.FileOffset = cpu_to_le64(offset);
1365 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1366
1367 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1368 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
51146625
AA		 1369 true /* is_fctl */, false /* use_ipc */,
1370 (char *)&fsctl_buf,
31742c5a
SF		 1371 sizeof(struct file_zero_data_information), NULL, NULL);
1372 free_xid(xid);
1373 return rc;
1374}
1375
9ccf3216
SF		 1376static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
1377 loff_t off, loff_t len, bool keep_size)
1378{
1379 struct inode *inode;
1380 struct cifsInodeInfo *cifsi;
1381 struct cifsFileInfo *cfile = file->private_data;
1382 long rc = -EOPNOTSUPP;
1383 unsigned int xid;
1384
1385 xid = get_xid();
1386
2b0143b5 1387 inode = d_inode(cfile->dentry);
9ccf3216
SF		 1388 cifsi = CIFS_I(inode);
1389
1390 /* if file not oplocked can't be sure whether asking to extend size */
1391 if (!CIFS_CACHE_READ(cifsi))
1392 if (keep_size == false)
1393 return -EOPNOTSUPP;
1394
1395 /*
1396 * Files are non-sparse by default so falloc may be a no-op
1397 * Must check if file sparse. If not sparse, and not extending
1398 * then no need to do anything since file already allocated
1399 */
1400 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
1401 if (keep_size == true)
1402 return 0;
1403 /* check if extending file */
1404 else if (i_size_read(inode) >= off + len)
1405 /* not extending file and already not sparse */
1406 return 0;
1407 /* BB: in future add else clause to extend file */
1408 else
1409 return -EOPNOTSUPP;
1410 }
1411
1412 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
1413 /*
1414 * Check if falloc starts within first few pages of file
1415 * and ends within a few pages of the end of file to
1416 * ensure that most of file is being forced to be
1417 * fallocated now. If so then setting whole file sparse
1418 * ie potentially making a few extra pages at the beginning
1419 * or end of the file non-sparse via set_sparse is harmless.
1420 */
1421 if ((off > 8192) || (off + len + 8192 < i_size_read(inode)))
1422 return -EOPNOTSUPP;
1423
1424 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
1425 }
1426 /* BB: else ... in future add code to extend file and set sparse */
1427
1428
1429 free_xid(xid);
1430 return rc;
1431}
1432
1433
31742c5a
SF		 1434static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
1435 loff_t off, loff_t len)
1436{
1437 /* KEEP_SIZE already checked for by do_fallocate */
1438 if (mode & FALLOC_FL_PUNCH_HOLE)
1439 return smb3_punch_hole(file, tcon, off, len);
30175628
SF		 1440 else if (mode & FALLOC_FL_ZERO_RANGE) {
1441 if (mode & FALLOC_FL_KEEP_SIZE)
1442 return smb3_zero_range(file, tcon, off, len, true);
1443 return smb3_zero_range(file, tcon, off, len, false);
9ccf3216
SF		 1444 } else if (mode == FALLOC_FL_KEEP_SIZE)
1445 return smb3_simple_falloc(file, tcon, off, len, true);
1446 else if (mode == 0)
1447 return smb3_simple_falloc(file, tcon, off, len, false);
31742c5a
SF		 1448
1449 return -EOPNOTSUPP;
1450}
1451
c11f1df5
SP		 1452static void
1453smb2_downgrade_oplock(struct TCP_Server_Info *server,
1454 struct cifsInodeInfo *cinode, bool set_level2)
1455{
1456 if (set_level2)
1457 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
1458 0, NULL);
1459 else
1460 server->ops->set_oplock_level(cinode, 0, 0, NULL);
1461}
1462
53ef1016 1463static void
42873b0a
PS		 1464smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1465 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 1466{
1467 oplock &= 0xFF;
1468 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1469 return;
1470 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
42873b0a 1471 cinode->oplock = CIFS_CACHE_RHW_FLG;
53ef1016
PS		 1472 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
1473 &cinode->vfs_inode);
1474 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
42873b0a 1475 cinode->oplock = CIFS_CACHE_RW_FLG;
53ef1016
PS		 1476 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
1477 &cinode->vfs_inode);
1478 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
1479 cinode->oplock = CIFS_CACHE_READ_FLG;
1480 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
1481 &cinode->vfs_inode);
1482 } else
1483 cinode->oplock = 0;
1484}
1485
1486static void
42873b0a
PS		 1487smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1488 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 1489{
1490 char message[5] = {0};
1491
1492 oplock &= 0xFF;
1493 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1494 return;
1495
1496 cinode->oplock = 0;
1497 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
1498 cinode->oplock |= CIFS_CACHE_READ_FLG;
1499 strcat(message, "R");
1500 }
1501 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
1502 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
1503 strcat(message, "H");
1504 }
1505 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
1506 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
1507 strcat(message, "W");
1508 }
1509 if (!cinode->oplock)
1510 strcat(message, "None");
1511 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
1512 &cinode->vfs_inode);
1513}
1514
42873b0a
PS		 1515static void
1516smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1517 unsigned int epoch, bool *purge_cache)
1518{
1519 unsigned int old_oplock = cinode->oplock;
1520
1521 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
1522
1523 if (purge_cache) {
1524 *purge_cache = false;
1525 if (old_oplock == CIFS_CACHE_READ_FLG) {
1526 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
1527 (epoch - cinode->epoch > 0))
1528 *purge_cache = true;
1529 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1530 (epoch - cinode->epoch > 1))
1531 *purge_cache = true;
1532 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1533 (epoch - cinode->epoch > 1))
1534 *purge_cache = true;
1535 else if (cinode->oplock == 0 &&
1536 (epoch - cinode->epoch > 0))
1537 *purge_cache = true;
1538 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
1539 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1540 (epoch - cinode->epoch > 0))
1541 *purge_cache = true;
1542 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1543 (epoch - cinode->epoch > 1))
1544 *purge_cache = true;
1545 }
1546 cinode->epoch = epoch;
1547 }
1548}
1549
53ef1016
PS		 1550static bool
1551smb2_is_read_op(__u32 oplock)
1552{
1553 return oplock == SMB2_OPLOCK_LEVEL_II;
1554}
1555
1556static bool
1557smb21_is_read_op(__u32 oplock)
1558{
1559 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
1560 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
1561}
1562
f047390a
PS		 1563static __le32
1564map_oplock_to_lease(u8 oplock)
1565{
1566 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
1567 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
1568 else if (oplock == SMB2_OPLOCK_LEVEL_II)
1569 return SMB2_LEASE_READ_CACHING;
1570 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
1571 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
1572 SMB2_LEASE_WRITE_CACHING;
1573 return 0;
1574}
1575
a41a28bd
PS		 1576static char *
1577smb2_create_lease_buf(u8 *lease_key, u8 oplock)
1578{
1579 struct create_lease *buf;
1580
1581 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
1582 if (!buf)
1583 return NULL;
1584
1585 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1586 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
f047390a 1587 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
a41a28bd
PS		 1588
1589 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1590 (struct create_lease, lcontext));
1591 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
1592 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1593 (struct create_lease, Name));
1594 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 1595 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
a41a28bd
PS		 1596 buf->Name[0] = 'R';
1597 buf->Name[1] = 'q';
1598 buf->Name[2] = 'L';
1599 buf->Name[3] = 's';
1600 return (char *)buf;
1601}
1602
f047390a
PS		 1603static char *
1604smb3_create_lease_buf(u8 *lease_key, u8 oplock)
1605{
1606 struct create_lease_v2 *buf;
1607
1608 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
1609 if (!buf)
1610 return NULL;
1611
1612 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1613 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
1614 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
1615
1616 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1617 (struct create_lease_v2, lcontext));
1618 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
1619 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1620 (struct create_lease_v2, Name));
1621 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 1622 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
f047390a
PS		 1623 buf->Name[0] = 'R';
1624 buf->Name[1] = 'q';
1625 buf->Name[2] = 'L';
1626 buf->Name[3] = 's';
1627 return (char *)buf;
1628}
1629
b5c7cde3 1630static __u8
42873b0a 1631smb2_parse_lease_buf(void *buf, unsigned int *epoch)
b5c7cde3
PS		 1632{
1633 struct create_lease *lc = (struct create_lease *)buf;
1634
42873b0a 1635 *epoch = 0; /* not used */
b5c7cde3
PS		 1636 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1637 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1638 return le32_to_cpu(lc->lcontext.LeaseState);
1639}
1640
f047390a 1641static __u8
42873b0a 1642smb3_parse_lease_buf(void *buf, unsigned int *epoch)
f047390a
PS		 1643{
1644 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
1645
42873b0a 1646 *epoch = le16_to_cpu(lc->lcontext.Epoch);
f047390a
PS		 1647 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1648 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1649 return le32_to_cpu(lc->lcontext.LeaseState);
1650}
1651
7f6c5008
PS		 1652static unsigned int
1653smb2_wp_retry_size(struct inode *inode)
1654{
1655 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
1656 SMB2_MAX_BUFFER_SIZE);
1657}
1658
52755808
PS		 1659static bool
1660smb2_dir_needs_close(struct cifsFileInfo *cfile)
1661{
1662 return !cfile->invalidHandle;
1663}
1664
026e93dc
PS		 1665static void
1666fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, struct smb_rqst *old_rq)
1667{
1668 struct smb2_sync_hdr *shdr =
1669 (struct smb2_sync_hdr *)old_rq->rq_iov[1].iov_base;
1670 unsigned int orig_len = get_rfc1002_length(old_rq->rq_iov[0].iov_base);
1671
1672 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
1673 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
1674 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
1675 tr_hdr->Flags = cpu_to_le16(0x01);
1676 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
1677 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
1678 inc_rfc1001_len(tr_hdr, sizeof(struct smb2_transform_hdr) - 4);
1679 inc_rfc1001_len(tr_hdr, orig_len);
1680}
1681
1682static struct scatterlist *
1683init_sg(struct smb_rqst *rqst, u8 *sign)
1684{
1685 unsigned int sg_len = rqst->rq_nvec + rqst->rq_npages + 1;
1686 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24;
1687 struct scatterlist *sg;
1688 unsigned int i;
1689 unsigned int j;
1690
1691 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
1692 if (!sg)
1693 return NULL;
1694
1695 sg_init_table(sg, sg_len);
1696 sg_set_buf(&sg[0], rqst->rq_iov[0].iov_base + 24, assoc_data_len);
1697 for (i = 1; i < rqst->rq_nvec; i++)
1698 sg_set_buf(&sg[i], rqst->rq_iov[i].iov_base,
1699 rqst->rq_iov[i].iov_len);
1700 for (j = 0; i < sg_len - 1; i++, j++) {
1701 unsigned int len = (j < rqst->rq_npages - 1) ? rqst->rq_pagesz
1702 : rqst->rq_tailsz;
1703 sg_set_page(&sg[i], rqst->rq_pages[j], len, 0);
1704 }
1705 sg_set_buf(&sg[sg_len - 1], sign, SMB2_SIGNATURE_SIZE);
1706 return sg;
1707}
1708
1709struct cifs_crypt_result {
1710 int err;
1711 struct completion completion;
1712};
1713
1714static void cifs_crypt_complete(struct crypto_async_request *req, int err)
1715{
1716 struct cifs_crypt_result *res = req->data;
1717
1718 if (err == -EINPROGRESS)
1719 return;
1720
1721 res->err = err;
1722 complete(&res->completion);
1723}
1724
61cfac6f
PS		 1725static int
1726smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
1727{
1728 struct cifs_ses *ses;
1729 u8 *ses_enc_key;
1730
1731 spin_lock(&cifs_tcp_ses_lock);
1732 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
1733 if (ses->Suid != ses_id)
1734 continue;
1735 ses_enc_key = enc ? ses->smb3encryptionkey :
1736 ses->smb3decryptionkey;
1737 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
1738 spin_unlock(&cifs_tcp_ses_lock);
1739 return 0;
1740 }
1741 spin_unlock(&cifs_tcp_ses_lock);
1742
1743 return 1;
1744}
026e93dc
PS		 1745/*
1746 * Encrypt or decrypt @rqst message. @rqst has the following format:
1747 * iov[0] - transform header (associate data),
1748 * iov[1-N] and pages - data to encrypt.
1749 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
1750 * untouched.
1751 */
1752static int
1753crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc)
1754{
1755 struct smb2_transform_hdr *tr_hdr =
1756 (struct smb2_transform_hdr *)rqst->rq_iov[0].iov_base;
1757 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24;
026e93dc
PS		 1758 int rc = 0;
1759 struct scatterlist *sg;
1760 u8 sign[SMB2_SIGNATURE_SIZE] = {};
61cfac6f 1761 u8 key[SMB3_SIGN_KEY_SIZE];
026e93dc
PS		 1762 struct aead_request *req;
1763 char *iv;
1764 unsigned int iv_len;
1765 struct cifs_crypt_result result = {0, };
1766 struct crypto_aead *tfm;
1767 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
1768
1769 init_completion(&result.completion);
1770
61cfac6f
PS		 1771 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
1772 if (rc) {
1773 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
1774 enc ? "en" : "de");
026e93dc
PS		 1775 return 0;
1776 }
1777
1778 rc = smb3_crypto_aead_allocate(server);
1779 if (rc) {
1780 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
1781 return rc;
1782 }
1783
1784 tfm = enc ? server->secmech.ccmaesencrypt :
1785 server->secmech.ccmaesdecrypt;
61cfac6f 1786 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
026e93dc
PS		 1787 if (rc) {
1788 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
1789 return rc;
1790 }
1791
1792 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
1793 if (rc) {
1794 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
1795 return rc;
1796 }
1797
1798 req = aead_request_alloc(tfm, GFP_KERNEL);
1799 if (!req) {
1800 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
1801 return -ENOMEM;
1802 }
1803
1804 if (!enc) {
1805 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
1806 crypt_len += SMB2_SIGNATURE_SIZE;
1807 }
1808
1809 sg = init_sg(rqst, sign);
1810 if (!sg) {
1811 cifs_dbg(VFS, "%s: Failed to init sg %d", __func__, rc);
1812 goto free_req;
1813 }
1814
1815 iv_len = crypto_aead_ivsize(tfm);
1816 iv = kzalloc(iv_len, GFP_KERNEL);
1817 if (!iv) {
1818 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
1819 goto free_sg;
1820 }
1821 iv[0] = 3;
1822 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
1823
1824 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
1825 aead_request_set_ad(req, assoc_data_len);
1826
1827 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
1828 cifs_crypt_complete, &result);
1829
1830 rc = enc ? crypto_aead_encrypt(req) : crypto_aead_decrypt(req);
1831
1832 if (rc == -EINPROGRESS || rc == -EBUSY) {
1833 wait_for_completion(&result.completion);
1834 rc = result.err;
1835 }
1836
1837 if (!rc && enc)
1838 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
1839
1840 kfree(iv);
1841free_sg:
1842 kfree(sg);
1843free_req:
1844 kfree(req);
1845 return rc;
1846}
1847
1848static int
1849smb3_init_transform_rq(struct TCP_Server_Info *server, struct smb_rqst *new_rq,
1850 struct smb_rqst *old_rq)
1851{
1852 struct kvec *iov;
1853 struct page **pages;
1854 struct smb2_transform_hdr *tr_hdr;
1855 unsigned int npages = old_rq->rq_npages;
1856 int i;
1857 int rc = -ENOMEM;
1858
1859 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
1860 if (!pages)
1861 return rc;
1862
1863 new_rq->rq_pages = pages;
1864 new_rq->rq_npages = old_rq->rq_npages;
1865 new_rq->rq_pagesz = old_rq->rq_pagesz;
1866 new_rq->rq_tailsz = old_rq->rq_tailsz;
1867
1868 for (i = 0; i < npages; i++) {
1869 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
1870 if (!pages[i])
1871 goto err_free_pages;
1872 }
1873
1874 iov = kmalloc_array(old_rq->rq_nvec, sizeof(struct kvec), GFP_KERNEL);
1875 if (!iov)
1876 goto err_free_pages;
1877
1878 /* copy all iovs from the old except the 1st one (rfc1002 length) */
1879 memcpy(&iov[1], &old_rq->rq_iov[1],
1880 sizeof(struct kvec) * (old_rq->rq_nvec - 1));
1881 new_rq->rq_iov = iov;
1882 new_rq->rq_nvec = old_rq->rq_nvec;
1883
1884 tr_hdr = kmalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL);
1885 if (!tr_hdr)
1886 goto err_free_iov;
1887
1888 /* fill the 1st iov with a transform header */
1889 fill_transform_hdr(tr_hdr, old_rq);
1890 new_rq->rq_iov[0].iov_base = tr_hdr;
1891 new_rq->rq_iov[0].iov_len = sizeof(struct smb2_transform_hdr);
1892
1893 /* copy pages form the old */
1894 for (i = 0; i < npages; i++) {
1895 char *dst = kmap(new_rq->rq_pages[i]);
1896 char *src = kmap(old_rq->rq_pages[i]);
1897 unsigned int len = (i < npages - 1) ? new_rq->rq_pagesz :
1898 new_rq->rq_tailsz;
1899 memcpy(dst, src, len);
1900 kunmap(new_rq->rq_pages[i]);
1901 kunmap(old_rq->rq_pages[i]);
1902 }
1903
1904 rc = crypt_message(server, new_rq, 1);
1905 cifs_dbg(FYI, "encrypt message returned %d", rc);
1906 if (rc)
1907 goto err_free_tr_hdr;
1908
1909 return rc;
1910
1911err_free_tr_hdr:
1912 kfree(tr_hdr);
1913err_free_iov:
1914 kfree(iov);
1915err_free_pages:
1916 for (i = i - 1; i >= 0; i--)
1917 put_page(pages[i]);
1918 kfree(pages);
1919 return rc;
1920}
1921
1922static void
1923smb3_free_transform_rq(struct smb_rqst *rqst)
1924{
1925 int i = rqst->rq_npages - 1;
1926
1927 for (; i >= 0; i--)
1928 put_page(rqst->rq_pages[i]);
1929 kfree(rqst->rq_pages);
1930 /* free transform header */
1931 kfree(rqst->rq_iov[0].iov_base);
1932 kfree(rqst->rq_iov);
1933}
1934
4326ed2f
PS		 1935static int
1936smb3_is_transform_hdr(void *buf)
1937{
1938 struct smb2_transform_hdr *trhdr = buf;
1939
1940 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
1941}
1942
1943static int
1944decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
1945 unsigned int buf_data_size, struct page **pages,
1946 unsigned int npages, unsigned int page_data_size)
1947{
1948 struct kvec iov[2];
1949 struct smb_rqst rqst = {NULL};
1950 struct smb2_hdr *hdr;
1951 int rc;
1952
1953 iov[0].iov_base = buf;
1954 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
1955 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
1956 iov[1].iov_len = buf_data_size;
1957
1958 rqst.rq_iov = iov;
1959 rqst.rq_nvec = 2;
1960 rqst.rq_pages = pages;
1961 rqst.rq_npages = npages;
1962 rqst.rq_pagesz = PAGE_SIZE;
1963 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
1964
1965 rc = crypt_message(server, &rqst, 0);
1966 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
1967
1968 if (rc)
1969 return rc;
1970
1971 memmove(buf + 4, iov[1].iov_base, buf_data_size);
1972 hdr = (struct smb2_hdr *)buf;
1973 hdr->smb2_buf_length = cpu_to_be32(buf_data_size + page_data_size);
1974 server->total_read = buf_data_size + page_data_size + 4;
1975
1976 return rc;
1977}
1978
c42a6abe
PS		 1979static int
1980read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
1981 unsigned int npages, unsigned int len)
1982{
1983 int i;
1984 int length;
1985
1986 for (i = 0; i < npages; i++) {
1987 struct page *page = pages[i];
1988 size_t n;
1989
1990 n = len;
1991 if (len >= PAGE_SIZE) {
1992 /* enough data to fill the page */
1993 n = PAGE_SIZE;
1994 len -= n;
1995 } else {
1996 zero_user(page, len, PAGE_SIZE - len);
1997 len = 0;
1998 }
1999 length = cifs_read_page_from_socket(server, page, n);
2000 if (length < 0)
2001 return length;
2002 server->total_read += length;
2003 }
2004
2005 return 0;
2006}
2007
2008static int
2009init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
2010 unsigned int cur_off, struct bio_vec **page_vec)
2011{
2012 struct bio_vec *bvec;
2013 int i;
2014
2015 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
2016 if (!bvec)
2017 return -ENOMEM;
2018
2019 for (i = 0; i < npages; i++) {
2020 bvec[i].bv_page = pages[i];
2021 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
2022 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
2023 data_size -= bvec[i].bv_len;
2024 }
2025
2026 if (data_size != 0) {
2027 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
2028 kfree(bvec);
2029 return -EIO;
2030 }
2031
2032 *page_vec = bvec;
2033 return 0;
2034}
2035
4326ed2f
PS		 2036static int
2037handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
2038 char *buf, unsigned int buf_len, struct page **pages,
2039 unsigned int npages, unsigned int page_data_size)
2040{
2041 unsigned int data_offset;
2042 unsigned int data_len;
c42a6abe
PS		 2043 unsigned int cur_off;
2044 unsigned int cur_page_idx;
2045 unsigned int pad_len;
4326ed2f
PS		 2046 struct cifs_readdata *rdata = mid->callback_data;
2047 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
2048 struct bio_vec *bvec = NULL;
2049 struct iov_iter iter;
2050 struct kvec iov;
2051 int length;
2052
2053 if (shdr->Command != SMB2_READ) {
2054 cifs_dbg(VFS, "only big read responses are supported\n");
2055 return -ENOTSUPP;
2056 }
2057
2058 if (server->ops->is_status_pending &&
2059 server->ops->is_status_pending(buf, server, 0))
2060 return -1;
2061
2062 rdata->result = server->ops->map_error(buf, false);
2063 if (rdata->result != 0) {
2064 cifs_dbg(FYI, "%s: server returned error %d\n",
2065 __func__, rdata->result);
2066 dequeue_mid(mid, rdata->result);
2067 return 0;
2068 }
2069
2070 data_offset = server->ops->read_data_offset(buf) + 4;
2071 data_len = server->ops->read_data_length(buf);
2072
2073 if (data_offset < server->vals->read_rsp_size) {
2074 /*
2075 * win2k8 sometimes sends an offset of 0 when the read
2076 * is beyond the EOF. Treat it as if the data starts just after
2077 * the header.
2078 */
2079 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
2080 __func__, data_offset);
2081 data_offset = server->vals->read_rsp_size;
2082 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
2083 /* data_offset is beyond the end of smallbuf */
2084 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
2085 __func__, data_offset);
2086 rdata->result = -EIO;
2087 dequeue_mid(mid, rdata->result);
2088 return 0;
2089 }
2090
c42a6abe
PS		 2091 pad_len = data_offset - server->vals->read_rsp_size;
2092
4326ed2f
PS		 2093 if (buf_len <= data_offset) {
2094 /* read response payload is in pages */
c42a6abe
PS		 2095 cur_page_idx = pad_len / PAGE_SIZE;
2096 cur_off = pad_len % PAGE_SIZE;
2097
2098 if (cur_page_idx != 0) {
2099 /* data offset is beyond the 1st page of response */
2100 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
2101 __func__, data_offset);
2102 rdata->result = -EIO;
2103 dequeue_mid(mid, rdata->result);
2104 return 0;
2105 }
2106
2107 if (data_len > page_data_size - pad_len) {
2108 /* data_len is corrupt -- discard frame */
2109 rdata->result = -EIO;
2110 dequeue_mid(mid, rdata->result);
2111 return 0;
2112 }
2113
2114 rdata->result = init_read_bvec(pages, npages, page_data_size,
2115 cur_off, &bvec);
2116 if (rdata->result != 0) {
2117 dequeue_mid(mid, rdata->result);
2118 return 0;
2119 }
2120
2121 iov_iter_bvec(&iter, WRITE | ITER_BVEC, bvec, npages, data_len);
4326ed2f
PS		 2122 } else if (buf_len >= data_offset + data_len) {
2123 /* read response payload is in buf */
2124 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
2125 iov.iov_base = buf + data_offset;
2126 iov.iov_len = data_len;
2127 iov_iter_kvec(&iter, WRITE | ITER_KVEC, &iov, 1, data_len);
2128 } else {
2129 /* read response payload cannot be in both buf and pages */
2130 WARN_ONCE(1, "buf can not contain only a part of read data");
2131 rdata->result = -EIO;
2132 dequeue_mid(mid, rdata->result);
2133 return 0;
2134 }
2135
2136 /* set up first iov for signature check */
2137 rdata->iov[0].iov_base = buf;
2138 rdata->iov[0].iov_len = 4;
2139 rdata->iov[1].iov_base = buf + 4;
2140 rdata->iov[1].iov_len = server->vals->read_rsp_size - 4;
2141 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
2142 rdata->iov[0].iov_base, server->vals->read_rsp_size);
2143
2144 length = rdata->copy_into_pages(server, rdata, &iter);
2145
2146 kfree(bvec);
2147
2148 if (length < 0)
2149 return length;
2150
2151 dequeue_mid(mid, false);
2152 return length;
2153}
2154
c42a6abe
PS		 2155static int
2156receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2157{
2158 char *buf = server->smallbuf;
2159 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2160 unsigned int npages;
2161 struct page **pages;
2162 unsigned int len;
2163 unsigned int buflen = get_rfc1002_length(buf) + 4;
2164 int rc;
2165 int i = 0;
2166
2167 len = min_t(unsigned int, buflen, server->vals->read_rsp_size - 4 +
2168 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
2169
2170 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
2171 if (rc < 0)
2172 return rc;
2173 server->total_read += rc;
2174
2175 len = le32_to_cpu(tr_hdr->OriginalMessageSize) + 4 -
2176 server->vals->read_rsp_size;
2177 npages = DIV_ROUND_UP(len, PAGE_SIZE);
2178
2179 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
2180 if (!pages) {
2181 rc = -ENOMEM;
2182 goto discard_data;
2183 }
2184
2185 for (; i < npages; i++) {
2186 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2187 if (!pages[i]) {
2188 rc = -ENOMEM;
2189 goto discard_data;
2190 }
2191 }
2192
2193 /* read read data into pages */
2194 rc = read_data_into_pages(server, pages, npages, len);
2195 if (rc)
2196 goto free_pages;
2197
350be257 2198 rc = cifs_discard_remaining_data(server);
c42a6abe
PS		 2199 if (rc)
2200 goto free_pages;
2201
2202 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size - 4,
2203 pages, npages, len);
2204 if (rc)
2205 goto free_pages;
2206
2207 *mid = smb2_find_mid(server, buf);
2208 if (*mid == NULL)
2209 cifs_dbg(FYI, "mid not found\n");
2210 else {
2211 cifs_dbg(FYI, "mid found\n");
2212 (*mid)->decrypted = true;
2213 rc = handle_read_data(server, *mid, buf,
2214 server->vals->read_rsp_size,
2215 pages, npages, len);
2216 }
2217
2218free_pages:
2219 for (i = i - 1; i >= 0; i--)
2220 put_page(pages[i]);
2221 kfree(pages);
2222 return rc;
2223discard_data:
350be257 2224 cifs_discard_remaining_data(server);
c42a6abe
PS		 2225 goto free_pages;
2226}
2227
4326ed2f
PS		 2228static int
2229receive_encrypted_standard(struct TCP_Server_Info *server,
2230 struct mid_q_entry **mid)
2231{
2232 int length;
2233 char *buf = server->smallbuf;
2234 unsigned int pdu_length = get_rfc1002_length(buf);
2235 unsigned int buf_size;
2236 struct mid_q_entry *mid_entry;
2237
2238 /* switch to large buffer if too big for a small one */
2239 if (pdu_length + 4 > MAX_CIFS_SMALL_BUFFER_SIZE) {
2240 server->large_buf = true;
2241 memcpy(server->bigbuf, buf, server->total_read);
2242 buf = server->bigbuf;
2243 }
2244
2245 /* now read the rest */
2246 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
2247 pdu_length - HEADER_SIZE(server) + 1 + 4);
2248 if (length < 0)
2249 return length;
2250 server->total_read += length;
2251
2252 buf_size = pdu_length + 4 - sizeof(struct smb2_transform_hdr);
2253 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
2254 if (length)
2255 return length;
2256
2257 mid_entry = smb2_find_mid(server, buf);
2258 if (mid_entry == NULL)
2259 cifs_dbg(FYI, "mid not found\n");
2260 else {
2261 cifs_dbg(FYI, "mid found\n");
2262 mid_entry->decrypted = true;
2263 }
2264
2265 *mid = mid_entry;
2266
2267 if (mid_entry && mid_entry->handle)
2268 return mid_entry->handle(server, mid_entry);
2269
2270 return cifs_handle_standard(server, mid_entry);
2271}
2272
2273static int
2274smb3_receive_transform(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2275{
2276 char *buf = server->smallbuf;
2277 unsigned int pdu_length = get_rfc1002_length(buf);
2278 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2279 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2280
2281 if (pdu_length + 4 < sizeof(struct smb2_transform_hdr) +
2282 sizeof(struct smb2_sync_hdr)) {
2283 cifs_dbg(VFS, "Transform message is too small (%u)\n",
2284 pdu_length);
2285 cifs_reconnect(server);
2286 wake_up(&server->response_q);
2287 return -ECONNABORTED;
2288 }
2289
2290 if (pdu_length + 4 < orig_len + sizeof(struct smb2_transform_hdr)) {
2291 cifs_dbg(VFS, "Transform message is broken\n");
2292 cifs_reconnect(server);
2293 wake_up(&server->response_q);
2294 return -ECONNABORTED;
2295 }
2296
c42a6abe
PS		 2297 if (pdu_length + 4 > CIFSMaxBufSize + MAX_HEADER_SIZE(server))
2298 return receive_encrypted_read(server, mid);
4326ed2f
PS		 2299
2300 return receive_encrypted_standard(server, mid);
2301}
2302
2303int
2304smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
2305{
2306 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
2307
2308 return handle_read_data(server, mid, buf, get_rfc1002_length(buf) + 4,
2309 NULL, 0, 0);
2310}
2311
53ef1016 2312struct smb_version_operations smb20_operations = {
027e8eec 2313 .compare_fids = smb2_compare_fids,
2dc7e1c0 2314 .setup_request = smb2_setup_request,
c95b8eed 2315 .setup_async_request = smb2_setup_async_request,
2dc7e1c0 2316 .check_receive = smb2_check_receive,
28ea5290
PS		 2317 .add_credits = smb2_add_credits,
2318 .set_credits = smb2_set_credits,
2319 .get_credits_field = smb2_get_credits_field,
2320 .get_credits = smb2_get_credits,
cb7e9eab 2321 .wait_mtu_credits = cifs_wait_mtu_credits,
2dc7e1c0 2322 .get_next_mid = smb2_get_next_mid,
09a4707e
PS		 2323 .read_data_offset = smb2_read_data_offset,
2324 .read_data_length = smb2_read_data_length,
2325 .map_error = map_smb2_to_linux_error,
093b2bda
PS		 2326 .find_mid = smb2_find_mid,
2327 .check_message = smb2_check_message,
2328 .dump_detail = smb2_dump_detail,
d60622eb
PS		 2329 .clear_stats = smb2_clear_stats,
2330 .print_stats = smb2_print_stats,
983c88a4 2331 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 2332 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 2333 .downgrade_oplock = smb2_downgrade_oplock,
ec2e4523
PS		 2334 .need_neg = smb2_need_neg,
2335 .negotiate = smb2_negotiate,
3a3bab50
PS		 2336 .negotiate_wsize = smb2_negotiate_wsize,
2337 .negotiate_rsize = smb2_negotiate_rsize,
5478f9ba
PS		 2338 .sess_setup = SMB2_sess_setup,
2339 .logoff = SMB2_logoff,
faaf946a
PS		 2340 .tree_connect = SMB2_tcon,
2341 .tree_disconnect = SMB2_tdis,
34f62640 2342 .qfs_tcon = smb2_qfs_tcon,
2503a0db 2343 .is_path_accessible = smb2_is_path_accessible,
9094fad1
PS		 2344 .can_echo = smb2_can_echo,
2345 .echo = SMB2_echo,
be4cb9e3
PS		 2346 .query_path_info = smb2_query_path_info,
2347 .get_srv_inum = smb2_get_srv_inum,
b7546bc5 2348 .query_file_info = smb2_query_file_info,
c839ff24
PS		 2349 .set_path_size = smb2_set_path_size,
2350 .set_file_size = smb2_set_file_size,
1feeaac7 2351 .set_file_info = smb2_set_file_info,
64a5cfa6 2352 .set_compression = smb2_set_compression,
a0e73183
PS		 2353 .mkdir = smb2_mkdir,
2354 .mkdir_setinfo = smb2_mkdir_setinfo,
1a500f01 2355 .rmdir = smb2_rmdir,
cbe6f439 2356 .unlink = smb2_unlink,
35143eb5 2357 .rename = smb2_rename_path,
568798cc 2358 .create_hardlink = smb2_create_hardlink,
b42bf888 2359 .query_symlink = smb2_query_symlink,
5b23c97d
SP		 2360 .query_mf_symlink = smb3_query_mf_symlink,
2361 .create_mf_symlink = smb3_create_mf_symlink,
f0df737e
PS		 2362 .open = smb2_open_file,
2363 .set_fid = smb2_set_fid,
2364 .close = smb2_close_file,
7a5cfb19 2365 .flush = smb2_flush_file,
09a4707e 2366 .async_readv = smb2_async_readv,
33319141 2367 .async_writev = smb2_async_writev,
d8e05039 2368 .sync_read = smb2_sync_read,
009d3443 2369 .sync_write = smb2_sync_write,
d324f08d
PS		 2370 .query_dir_first = smb2_query_dir_first,
2371 .query_dir_next = smb2_query_dir_next,
2372 .close_dir = smb2_close_dir,
2373 .calc_smb_size = smb2_calc_size,
2e44b288 2374 .is_status_pending = smb2_is_status_pending,
983c88a4 2375 .oplock_response = smb2_oplock_response,
6fc05c25 2376 .queryfs = smb2_queryfs,
f7ba7fe6
PS		 2377 .mand_lock = smb2_mand_lock,
2378 .mand_unlock_range = smb2_unlock_range,
b140799a 2379 .push_mand_locks = smb2_push_mandatory_locks,
b8c32dbb
PS		 2380 .get_lease_key = smb2_get_lease_key,
2381 .set_lease_key = smb2_set_lease_key,
2382 .new_lease_key = smb2_new_lease_key,
38107d45 2383 .calc_signature = smb2_calc_signature,
53ef1016
PS		 2384 .is_read_op = smb2_is_read_op,
2385 .set_oplock_level = smb2_set_oplock_level,
a41a28bd 2386 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 2387 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 2388 .copychunk_range = smb2_copychunk_range,
7f6c5008 2389 .wp_retry_size = smb2_wp_retry_size,
52755808 2390 .dir_needs_close = smb2_dir_needs_close,
9d49640a 2391 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2392 .select_sectype = smb2_select_sectype,
38107d45
SF		 2393};
2394
53ef1016
PS		 2395struct smb_version_operations smb21_operations = {
2396 .compare_fids = smb2_compare_fids,
2397 .setup_request = smb2_setup_request,
2398 .setup_async_request = smb2_setup_async_request,
2399 .check_receive = smb2_check_receive,
2400 .add_credits = smb2_add_credits,
2401 .set_credits = smb2_set_credits,
2402 .get_credits_field = smb2_get_credits_field,
2403 .get_credits = smb2_get_credits,
cb7e9eab 2404 .wait_mtu_credits = smb2_wait_mtu_credits,
53ef1016
PS		 2405 .get_next_mid = smb2_get_next_mid,
2406 .read_data_offset = smb2_read_data_offset,
2407 .read_data_length = smb2_read_data_length,
2408 .map_error = map_smb2_to_linux_error,
2409 .find_mid = smb2_find_mid,
2410 .check_message = smb2_check_message,
2411 .dump_detail = smb2_dump_detail,
2412 .clear_stats = smb2_clear_stats,
2413 .print_stats = smb2_print_stats,
2414 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 2415 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 2416 .downgrade_oplock = smb2_downgrade_oplock,
53ef1016
PS		 2417 .need_neg = smb2_need_neg,
2418 .negotiate = smb2_negotiate,
2419 .negotiate_wsize = smb2_negotiate_wsize,
2420 .negotiate_rsize = smb2_negotiate_rsize,
2421 .sess_setup = SMB2_sess_setup,
2422 .logoff = SMB2_logoff,
2423 .tree_connect = SMB2_tcon,
2424 .tree_disconnect = SMB2_tdis,
34f62640 2425 .qfs_tcon = smb2_qfs_tcon,
53ef1016
PS		 2426 .is_path_accessible = smb2_is_path_accessible,
2427 .can_echo = smb2_can_echo,
2428 .echo = SMB2_echo,
2429 .query_path_info = smb2_query_path_info,
2430 .get_srv_inum = smb2_get_srv_inum,
2431 .query_file_info = smb2_query_file_info,
2432 .set_path_size = smb2_set_path_size,
2433 .set_file_size = smb2_set_file_size,
2434 .set_file_info = smb2_set_file_info,
64a5cfa6 2435 .set_compression = smb2_set_compression,
53ef1016
PS		 2436 .mkdir = smb2_mkdir,
2437 .mkdir_setinfo = smb2_mkdir_setinfo,
2438 .rmdir = smb2_rmdir,
2439 .unlink = smb2_unlink,
2440 .rename = smb2_rename_path,
2441 .create_hardlink = smb2_create_hardlink,
2442 .query_symlink = smb2_query_symlink,
c22870ea 2443 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 2444 .create_mf_symlink = smb3_create_mf_symlink,
53ef1016
PS		 2445 .open = smb2_open_file,
2446 .set_fid = smb2_set_fid,
2447 .close = smb2_close_file,
2448 .flush = smb2_flush_file,
2449 .async_readv = smb2_async_readv,
2450 .async_writev = smb2_async_writev,
2451 .sync_read = smb2_sync_read,
2452 .sync_write = smb2_sync_write,
2453 .query_dir_first = smb2_query_dir_first,
2454 .query_dir_next = smb2_query_dir_next,
2455 .close_dir = smb2_close_dir,
2456 .calc_smb_size = smb2_calc_size,
2457 .is_status_pending = smb2_is_status_pending,
2458 .oplock_response = smb2_oplock_response,
2459 .queryfs = smb2_queryfs,
2460 .mand_lock = smb2_mand_lock,
2461 .mand_unlock_range = smb2_unlock_range,
2462 .push_mand_locks = smb2_push_mandatory_locks,
2463 .get_lease_key = smb2_get_lease_key,
2464 .set_lease_key = smb2_set_lease_key,
2465 .new_lease_key = smb2_new_lease_key,
2466 .calc_signature = smb2_calc_signature,
2467 .is_read_op = smb21_is_read_op,
2468 .set_oplock_level = smb21_set_oplock_level,
a41a28bd 2469 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 2470 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 2471 .copychunk_range = smb2_copychunk_range,
7f6c5008 2472 .wp_retry_size = smb2_wp_retry_size,
52755808 2473 .dir_needs_close = smb2_dir_needs_close,
834170c8 2474 .enum_snapshots = smb3_enum_snapshots,
9d49640a 2475 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2476 .select_sectype = smb2_select_sectype,
53ef1016 2477};
38107d45
SF		 2478
2479struct smb_version_operations smb30_operations = {
2480 .compare_fids = smb2_compare_fids,
2481 .setup_request = smb2_setup_request,
2482 .setup_async_request = smb2_setup_async_request,
2483 .check_receive = smb2_check_receive,
2484 .add_credits = smb2_add_credits,
2485 .set_credits = smb2_set_credits,
2486 .get_credits_field = smb2_get_credits_field,
2487 .get_credits = smb2_get_credits,
cb7e9eab 2488 .wait_mtu_credits = smb2_wait_mtu_credits,
38107d45
SF		 2489 .get_next_mid = smb2_get_next_mid,
2490 .read_data_offset = smb2_read_data_offset,
2491 .read_data_length = smb2_read_data_length,
2492 .map_error = map_smb2_to_linux_error,
2493 .find_mid = smb2_find_mid,
2494 .check_message = smb2_check_message,
2495 .dump_detail = smb2_dump_detail,
2496 .clear_stats = smb2_clear_stats,
2497 .print_stats = smb2_print_stats,
769ee6a4 2498 .dump_share_caps = smb2_dump_share_caps,
38107d45 2499 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 2500 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 2501 .downgrade_oplock = smb2_downgrade_oplock,
38107d45
SF		 2502 .need_neg = smb2_need_neg,
2503 .negotiate = smb2_negotiate,
2504 .negotiate_wsize = smb2_negotiate_wsize,
2505 .negotiate_rsize = smb2_negotiate_rsize,
2506 .sess_setup = SMB2_sess_setup,
2507 .logoff = SMB2_logoff,
2508 .tree_connect = SMB2_tcon,
2509 .tree_disconnect = SMB2_tdis,
af6a12ea 2510 .qfs_tcon = smb3_qfs_tcon,
38107d45
SF		 2511 .is_path_accessible = smb2_is_path_accessible,
2512 .can_echo = smb2_can_echo,
2513 .echo = SMB2_echo,
2514 .query_path_info = smb2_query_path_info,
2515 .get_srv_inum = smb2_get_srv_inum,
2516 .query_file_info = smb2_query_file_info,
2517 .set_path_size = smb2_set_path_size,
2518 .set_file_size = smb2_set_file_size,
2519 .set_file_info = smb2_set_file_info,
64a5cfa6 2520 .set_compression = smb2_set_compression,
38107d45
SF		 2521 .mkdir = smb2_mkdir,
2522 .mkdir_setinfo = smb2_mkdir_setinfo,
2523 .rmdir = smb2_rmdir,
2524 .unlink = smb2_unlink,
2525 .rename = smb2_rename_path,
2526 .create_hardlink = smb2_create_hardlink,
b42bf888 2527 .query_symlink = smb2_query_symlink,
c22870ea 2528 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 2529 .create_mf_symlink = smb3_create_mf_symlink,
38107d45
SF		 2530 .open = smb2_open_file,
2531 .set_fid = smb2_set_fid,
2532 .close = smb2_close_file,
2533 .flush = smb2_flush_file,
2534 .async_readv = smb2_async_readv,
2535 .async_writev = smb2_async_writev,
2536 .sync_read = smb2_sync_read,
2537 .sync_write = smb2_sync_write,
2538 .query_dir_first = smb2_query_dir_first,
2539 .query_dir_next = smb2_query_dir_next,
2540 .close_dir = smb2_close_dir,
2541 .calc_smb_size = smb2_calc_size,
2542 .is_status_pending = smb2_is_status_pending,
2543 .oplock_response = smb2_oplock_response,
2544 .queryfs = smb2_queryfs,
2545 .mand_lock = smb2_mand_lock,
2546 .mand_unlock_range = smb2_unlock_range,
2547 .push_mand_locks = smb2_push_mandatory_locks,
2548 .get_lease_key = smb2_get_lease_key,
2549 .set_lease_key = smb2_set_lease_key,
2550 .new_lease_key = smb2_new_lease_key,
373512ec 2551 .generate_signingkey = generate_smb30signingkey,
38107d45 2552 .calc_signature = smb3_calc_signature,
b3152e2c 2553 .set_integrity = smb3_set_integrity,
53ef1016 2554 .is_read_op = smb21_is_read_op,
42873b0a 2555 .set_oplock_level = smb3_set_oplock_level,
f047390a
PS		 2556 .create_lease_buf = smb3_create_lease_buf,
2557 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 2558 .copychunk_range = smb2_copychunk_range,
ca9e7a1c 2559 .duplicate_extents = smb2_duplicate_extents,
ff1c038a 2560 .validate_negotiate = smb3_validate_negotiate,
7f6c5008 2561 .wp_retry_size = smb2_wp_retry_size,
52755808 2562 .dir_needs_close = smb2_dir_needs_close,
31742c5a 2563 .fallocate = smb3_fallocate,
834170c8 2564 .enum_snapshots = smb3_enum_snapshots,
026e93dc
PS		 2565 .init_transform_rq = smb3_init_transform_rq,
2566 .free_transform_rq = smb3_free_transform_rq,
4326ed2f
PS		 2567 .is_transform_hdr = smb3_is_transform_hdr,
2568 .receive_transform = smb3_receive_transform,
9d49640a 2569 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2570 .select_sectype = smb2_select_sectype,
1080ef75
SF		 2571};
2572
aab1893d
SF		 2573#ifdef CONFIG_CIFS_SMB311
2574struct smb_version_operations smb311_operations = {
2575 .compare_fids = smb2_compare_fids,
2576 .setup_request = smb2_setup_request,
2577 .setup_async_request = smb2_setup_async_request,
2578 .check_receive = smb2_check_receive,
2579 .add_credits = smb2_add_credits,
2580 .set_credits = smb2_set_credits,
2581 .get_credits_field = smb2_get_credits_field,
2582 .get_credits = smb2_get_credits,
2583 .wait_mtu_credits = smb2_wait_mtu_credits,
2584 .get_next_mid = smb2_get_next_mid,
2585 .read_data_offset = smb2_read_data_offset,
2586 .read_data_length = smb2_read_data_length,
2587 .map_error = map_smb2_to_linux_error,
2588 .find_mid = smb2_find_mid,
2589 .check_message = smb2_check_message,
2590 .dump_detail = smb2_dump_detail,
2591 .clear_stats = smb2_clear_stats,
2592 .print_stats = smb2_print_stats,
2593 .dump_share_caps = smb2_dump_share_caps,
2594 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 2595 .handle_cancelled_mid = smb2_handle_cancelled_mid,
aab1893d
SF		 2596 .downgrade_oplock = smb2_downgrade_oplock,
2597 .need_neg = smb2_need_neg,
2598 .negotiate = smb2_negotiate,
2599 .negotiate_wsize = smb2_negotiate_wsize,
2600 .negotiate_rsize = smb2_negotiate_rsize,
2601 .sess_setup = SMB2_sess_setup,
2602 .logoff = SMB2_logoff,
2603 .tree_connect = SMB2_tcon,
2604 .tree_disconnect = SMB2_tdis,
2605 .qfs_tcon = smb3_qfs_tcon,
2606 .is_path_accessible = smb2_is_path_accessible,
2607 .can_echo = smb2_can_echo,
2608 .echo = SMB2_echo,
2609 .query_path_info = smb2_query_path_info,
2610 .get_srv_inum = smb2_get_srv_inum,
2611 .query_file_info = smb2_query_file_info,
2612 .set_path_size = smb2_set_path_size,
2613 .set_file_size = smb2_set_file_size,
2614 .set_file_info = smb2_set_file_info,
2615 .set_compression = smb2_set_compression,
2616 .mkdir = smb2_mkdir,
2617 .mkdir_setinfo = smb2_mkdir_setinfo,
2618 .rmdir = smb2_rmdir,
2619 .unlink = smb2_unlink,
2620 .rename = smb2_rename_path,
2621 .create_hardlink = smb2_create_hardlink,
2622 .query_symlink = smb2_query_symlink,
2623 .query_mf_symlink = smb3_query_mf_symlink,
2624 .create_mf_symlink = smb3_create_mf_symlink,
2625 .open = smb2_open_file,
2626 .set_fid = smb2_set_fid,
2627 .close = smb2_close_file,
2628 .flush = smb2_flush_file,
2629 .async_readv = smb2_async_readv,
2630 .async_writev = smb2_async_writev,
2631 .sync_read = smb2_sync_read,
2632 .sync_write = smb2_sync_write,
2633 .query_dir_first = smb2_query_dir_first,
2634 .query_dir_next = smb2_query_dir_next,
2635 .close_dir = smb2_close_dir,
2636 .calc_smb_size = smb2_calc_size,
2637 .is_status_pending = smb2_is_status_pending,
2638 .oplock_response = smb2_oplock_response,
2639 .queryfs = smb2_queryfs,
2640 .mand_lock = smb2_mand_lock,
2641 .mand_unlock_range = smb2_unlock_range,
2642 .push_mand_locks = smb2_push_mandatory_locks,
2643 .get_lease_key = smb2_get_lease_key,
2644 .set_lease_key = smb2_set_lease_key,
2645 .new_lease_key = smb2_new_lease_key,
373512ec 2646 .generate_signingkey = generate_smb311signingkey,
aab1893d 2647 .calc_signature = smb3_calc_signature,
b3152e2c 2648 .set_integrity = smb3_set_integrity,
aab1893d
SF		 2649 .is_read_op = smb21_is_read_op,
2650 .set_oplock_level = smb3_set_oplock_level,
2651 .create_lease_buf = smb3_create_lease_buf,
2652 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 2653 .copychunk_range = smb2_copychunk_range,
02b16665 2654 .duplicate_extents = smb2_duplicate_extents,
aab1893d
SF		 2655/* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
2656 .wp_retry_size = smb2_wp_retry_size,
2657 .dir_needs_close = smb2_dir_needs_close,
2658 .fallocate = smb3_fallocate,
834170c8 2659 .enum_snapshots = smb3_enum_snapshots,
026e93dc
PS		 2660 .init_transform_rq = smb3_init_transform_rq,
2661 .free_transform_rq = smb3_free_transform_rq,
4326ed2f
PS		 2662 .is_transform_hdr = smb3_is_transform_hdr,
2663 .receive_transform = smb3_receive_transform,
9d49640a 2664 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2665 .select_sectype = smb2_select_sectype,
aab1893d
SF		 2666};
2667#endif /* CIFS_SMB311 */
2668
dd446b16
SF		 2669struct smb_version_values smb20_values = {
2670 .version_string = SMB20_VERSION_STRING,
2671 .protocol_id = SMB20_PROT_ID,
2672 .req_capabilities = 0, /* MBZ */
2673 .large_lock_type = 0,
2674 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2675 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2676 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2677 .header_size = sizeof(struct smb2_hdr),
2678 .max_header_size = MAX_SMB2_HDR_SIZE,
2679 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2680 .lock_cmd = SMB2_LOCK,
2681 .cap_unix = 0,
2682 .cap_nt_find = SMB2_NT_FIND,
2683 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 2684 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2685 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 2686 .create_lease_size = sizeof(struct create_lease),
dd446b16
SF		 2687};
2688
1080ef75
SF		 2689struct smb_version_values smb21_values = {
2690 .version_string = SMB21_VERSION_STRING,
e4aa25e7
SF		 2691 .protocol_id = SMB21_PROT_ID,
2692 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
2693 .large_lock_type = 0,
2694 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2695 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2696 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2697 .header_size = sizeof(struct smb2_hdr),
2698 .max_header_size = MAX_SMB2_HDR_SIZE,
2699 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2700 .lock_cmd = SMB2_LOCK,
2701 .cap_unix = 0,
2702 .cap_nt_find = SMB2_NT_FIND,
2703 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 2704 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2705 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 2706 .create_lease_size = sizeof(struct create_lease),
e4aa25e7
SF		 2707};
2708
2709struct smb_version_values smb30_values = {
2710 .version_string = SMB30_VERSION_STRING,
2711 .protocol_id = SMB30_PROT_ID,
373512ec 2712 .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		 2713 .large_lock_type = 0,
2714 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2715 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2716 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
093b2bda
PS		 2717 .header_size = sizeof(struct smb2_hdr),
2718 .max_header_size = MAX_SMB2_HDR_SIZE,
09a4707e 2719 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2dc7e1c0 2720 .lock_cmd = SMB2_LOCK,
29e20f9c
PS		 2721 .cap_unix = 0,
2722 .cap_nt_find = SMB2_NT_FIND,
2723 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 2724 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2725 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 2726 .create_lease_size = sizeof(struct create_lease_v2),
1080ef75 2727};
20b6d8b4
SF		 2728
2729struct smb_version_values smb302_values = {
2730 .version_string = SMB302_VERSION_STRING,
2731 .protocol_id = SMB302_PROT_ID,
373512ec 2732 .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		 2733 .large_lock_type = 0,
2734 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2735 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2736 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2737 .header_size = sizeof(struct smb2_hdr),
2738 .max_header_size = MAX_SMB2_HDR_SIZE,
2739 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2740 .lock_cmd = SMB2_LOCK,
2741 .cap_unix = 0,
2742 .cap_nt_find = SMB2_NT_FIND,
2743 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 2744 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2745 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 2746 .create_lease_size = sizeof(struct create_lease_v2),
20b6d8b4 2747};
5f7fbf73
SF		 2748
2749#ifdef CONFIG_CIFS_SMB311
2750struct smb_version_values smb311_values = {
2751 .version_string = SMB311_VERSION_STRING,
2752 .protocol_id = SMB311_PROT_ID,
b618f001 2753 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES,
5f7fbf73
SF		 2754 .large_lock_type = 0,
2755 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2756 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2757 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2758 .header_size = sizeof(struct smb2_hdr),
2759 .max_header_size = MAX_SMB2_HDR_SIZE,
2760 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2761 .lock_cmd = SMB2_LOCK,
2762 .cap_unix = 0,
2763 .cap_nt_find = SMB2_NT_FIND,
2764 .cap_large_files = SMB2_LARGE_FILES,
2765 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2766 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
2767 .create_lease_size = sizeof(struct create_lease_v2),
2768};
2769#endif /* SMB311 */
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