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cifs: minor documentation updates
[mirror_ubuntu-hirsute-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"
09902f8d 35#include "smbdirect.h"
28ea5290 36
ef68e831 37/* Change credits for different ops and return the total number of credits */
28ea5290
PS		 38static int
39change_conf(struct TCP_Server_Info *server)
40{
41 server->credits += server->echo_credits + server->oplock_credits;
42 server->oplock_credits = server->echo_credits = 0;
43 switch (server->credits) {
44 case 0:
ef68e831 45 return 0;
28ea5290
PS		 46 case 1:
47 server->echoes = false;
48 server->oplocks = false;
28ea5290
PS		 49 break;
50 case 2:
51 server->echoes = true;
52 server->oplocks = false;
53 server->echo_credits = 1;
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;
ef68e831 66 return server->credits + server->echo_credits + server->oplock_credits;
28ea5290
PS		 67}
68
69static void
335b7b62
PS		 70smb2_add_credits(struct TCP_Server_Info *server,
71 const struct cifs_credits *credits, const int optype)
28ea5290 72{
ef68e831 73 int *val, rc = -1;
335b7b62
PS		 74 unsigned int add = credits->value;
75 unsigned int instance = credits->instance;
76 bool reconnect_detected = false;
ef68e831 77
28ea5290
PS		 78 spin_lock(&server->req_lock);
79 val = server->ops->get_credits_field(server, optype);
b340a4d4
SF		 80
81 /* eg found case where write overlapping reconnect messed up credits */
82 if (((optype & CIFS_OP_MASK) == CIFS_NEG_OP) && (*val != 0))
83 trace_smb3_reconnect_with_invalid_credits(server->CurrentMid,
84 server->hostname, *val);
335b7b62
PS		 85 if ((instance == 0) || (instance == server->reconnect_instance))
86 *val += add;
87 else
88 reconnect_detected = true;
b340a4d4 89
141891f4
SF		 90 if (*val > 65000) {
91 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
92 printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
93 }
28ea5290 94 server->in_flight--;
ec2e4523 95 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
28ea5290 96 rc = change_conf(server);
983c88a4
PS		 97 /*
98 * Sometimes server returns 0 credits on oplock break ack - we need to
99 * rebalance credits in this case.
100 */
101 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
102 server->oplocks) {
103 if (server->credits > 1) {
104 server->credits--;
105 server->oplock_credits++;
106 }
107 }
28ea5290
PS		 108 spin_unlock(&server->req_lock);
109 wake_up(&server->request_q);
ef68e831 110
335b7b62
PS		 111 if (reconnect_detected)
112 cifs_dbg(FYI, "trying to put %d credits from the old server instance %d\n",
113 add, instance);
114
82e0457a
PS		 115 if (server->tcpStatus == CifsNeedReconnect
116 || server->tcpStatus == CifsExiting)
ef68e831
PS		 117 return;
118
119 switch (rc) {
120 case -1:
121 /* change_conf hasn't been executed */
122 break;
123 case 0:
124 cifs_dbg(VFS, "Possible client or server bug - zero credits\n");
125 break;
126 case 1:
127 cifs_dbg(VFS, "disabling echoes and oplocks\n");
128 break;
129 case 2:
130 cifs_dbg(FYI, "disabling oplocks\n");
131 break;
132 default:
133 cifs_dbg(FYI, "add %u credits total=%d\n", add, rc);
134 }
28ea5290
PS		 135}
136
137static void
138smb2_set_credits(struct TCP_Server_Info *server, const int val)
139{
140 spin_lock(&server->req_lock);
141 server->credits = val;
9e1a37da
SF		 142 if (val == 1)
143 server->reconnect_instance++;
28ea5290 144 spin_unlock(&server->req_lock);
6e4d3bbe
SF		 145 /* don't log while holding the lock */
146 if (val == 1)
147 cifs_dbg(FYI, "set credits to 1 due to smb2 reconnect\n");
28ea5290
PS		 148}
149
150static int *
151smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
152{
153 switch (optype) {
154 case CIFS_ECHO_OP:
155 return &server->echo_credits;
156 case CIFS_OBREAK_OP:
157 return &server->oplock_credits;
158 default:
159 return &server->credits;
160 }
161}
162
163static unsigned int
164smb2_get_credits(struct mid_q_entry *mid)
165{
49f466bd 166 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)mid->resp_buf;
31473fc4 167
3d3003fc
PS		 168 if (mid->mid_state == MID_RESPONSE_RECEIVED
169 || mid->mid_state == MID_RESPONSE_MALFORMED)
170 return le16_to_cpu(shdr->CreditRequest);
171
172 return 0;
28ea5290 173}
2dc7e1c0 174
cb7e9eab
PS		 175static int
176smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
335b7b62 177 unsigned int *num, struct cifs_credits *credits)
cb7e9eab
PS		 178{
179 int rc = 0;
180 unsigned int scredits;
181
182 spin_lock(&server->req_lock);
183 while (1) {
184 if (server->credits <= 0) {
185 spin_unlock(&server->req_lock);
186 cifs_num_waiters_inc(server);
187 rc = wait_event_killable(server->request_q,
b227d215 188 has_credits(server, &server->credits, 1));
cb7e9eab
PS		 189 cifs_num_waiters_dec(server);
190 if (rc)
191 return rc;
192 spin_lock(&server->req_lock);
193 } else {
194 if (server->tcpStatus == CifsExiting) {
195 spin_unlock(&server->req_lock);
196 return -ENOENT;
197 }
198
199 scredits = server->credits;
200 /* can deadlock with reopen */
acc58d0b 201 if (scredits <= 8) {
cb7e9eab 202 *num = SMB2_MAX_BUFFER_SIZE;
335b7b62
PS		 203 credits->value = 0;
204 credits->instance = 0;
cb7e9eab
PS		 205 break;
206 }
207
acc58d0b
PS		 208 /* leave some credits for reopen and other ops */
209 scredits -= 8;
cb7e9eab
PS		 210 *num = min_t(unsigned int, size,
211 scredits * SMB2_MAX_BUFFER_SIZE);
212
335b7b62
PS		 213 credits->value =
214 DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
215 credits->instance = server->reconnect_instance;
216 server->credits -= credits->value;
cb7e9eab
PS		 217 server->in_flight++;
218 break;
219 }
220 }
221 spin_unlock(&server->req_lock);
222 return rc;
223}
224
9a1c67e8
PS		 225static int
226smb2_adjust_credits(struct TCP_Server_Info *server,
227 struct cifs_credits *credits,
228 const unsigned int payload_size)
229{
230 int new_val = DIV_ROUND_UP(payload_size, SMB2_MAX_BUFFER_SIZE);
231
232 if (!credits->value || credits->value == new_val)
233 return 0;
234
235 if (credits->value < new_val) {
236 WARN_ONCE(1, "request has less credits (%d) than required (%d)",
237 credits->value, new_val);
238 return -ENOTSUPP;
239 }
240
241 spin_lock(&server->req_lock);
242
243 if (server->reconnect_instance != credits->instance) {
244 spin_unlock(&server->req_lock);
245 cifs_dbg(VFS, "trying to return %d credits to old session\n",
246 credits->value - new_val);
247 return -EAGAIN;
248 }
249
250 server->credits += credits->value - new_val;
251 spin_unlock(&server->req_lock);
252 wake_up(&server->request_q);
253 credits->value = new_val;
254 return 0;
255}
256
2dc7e1c0
PS		 257static __u64
258smb2_get_next_mid(struct TCP_Server_Info *server)
259{
260 __u64 mid;
261 /* for SMB2 we need the current value */
262 spin_lock(&GlobalMid_Lock);
263 mid = server->CurrentMid++;
264 spin_unlock(&GlobalMid_Lock);
265 return mid;
266}
1080ef75 267
c781af7e
PS		 268static void
269smb2_revert_current_mid(struct TCP_Server_Info *server, const unsigned int val)
270{
271 spin_lock(&GlobalMid_Lock);
272 if (server->CurrentMid >= val)
273 server->CurrentMid -= val;
274 spin_unlock(&GlobalMid_Lock);
275}
276
093b2bda
PS		 277static struct mid_q_entry *
278smb2_find_mid(struct TCP_Server_Info *server, char *buf)
279{
280 struct mid_q_entry *mid;
49f466bd 281 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
31473fc4 282 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
093b2bda 283
31473fc4 284 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
373512ec
SF		 285 cifs_dbg(VFS, "encrypted frame parsing not supported yet");
286 return NULL;
287 }
288
093b2bda
PS		 289 spin_lock(&GlobalMid_Lock);
290 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
9235d098 291 if ((mid->mid == wire_mid) &&
093b2bda 292 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
31473fc4 293 (mid->command == shdr->Command)) {
696e420b 294 kref_get(&mid->refcount);
093b2bda
PS		 295 spin_unlock(&GlobalMid_Lock);
296 return mid;
297 }
298 }
299 spin_unlock(&GlobalMid_Lock);
300 return NULL;
301}
302
303static void
14547f7d 304smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
093b2bda
PS		 305{
306#ifdef CONFIG_CIFS_DEBUG2
49f466bd 307 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
093b2bda 308
f96637be 309 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
31473fc4
PS		 310 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
311 shdr->ProcessId);
14547f7d 312 cifs_dbg(VFS, "smb buf %p len %u\n", buf,
71992e62 313 server->ops->calc_smb_size(buf, server));
093b2bda
PS		 314#endif
315}
316
ec2e4523
PS		 317static bool
318smb2_need_neg(struct TCP_Server_Info *server)
319{
320 return server->max_read == 0;
321}
322
323static int
324smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
325{
326 int rc;
327 ses->server->CurrentMid = 0;
328 rc = SMB2_negotiate(xid, ses);
329 /* BB we probably don't need to retry with modern servers */
330 if (rc == -EAGAIN)
331 rc = -EHOSTDOWN;
332 return rc;
333}
334
3a3bab50
PS		 335static unsigned int
336smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
337{
338 struct TCP_Server_Info *server = tcon->ses->server;
339 unsigned int wsize;
340
341 /* start with specified wsize, or default */
342 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
343 wsize = min_t(unsigned int, wsize, server->max_write);
09902f8d 344#ifdef CONFIG_CIFS_SMB_DIRECT
bb4c0419
LL		 345 if (server->rdma) {
346 if (server->sign)
347 wsize = min_t(unsigned int,
348 wsize, server->smbd_conn->max_fragmented_send_size);
349 else
350 wsize = min_t(unsigned int,
09902f8d 351 wsize, server->smbd_conn->max_readwrite_size);
bb4c0419 352 }
09902f8d 353#endif
cb7e9eab
PS		 354 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
355 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 356
3a3bab50
PS		 357 return wsize;
358}
359
3d621230
SF		 360static unsigned int
361smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
362{
363 struct TCP_Server_Info *server = tcon->ses->server;
364 unsigned int wsize;
365
366 /* start with specified wsize, or default */
367 wsize = volume_info->wsize ? volume_info->wsize : SMB3_DEFAULT_IOSIZE;
368 wsize = min_t(unsigned int, wsize, server->max_write);
369#ifdef CONFIG_CIFS_SMB_DIRECT
370 if (server->rdma) {
371 if (server->sign)
372 wsize = min_t(unsigned int,
373 wsize, server->smbd_conn->max_fragmented_send_size);
374 else
375 wsize = min_t(unsigned int,
376 wsize, server->smbd_conn->max_readwrite_size);
377 }
378#endif
379 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
380 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
381
382 return wsize;
383}
384
3a3bab50
PS		 385static unsigned int
386smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
387{
388 struct TCP_Server_Info *server = tcon->ses->server;
389 unsigned int rsize;
390
391 /* start with specified rsize, or default */
392 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
393 rsize = min_t(unsigned int, rsize, server->max_read);
09902f8d 394#ifdef CONFIG_CIFS_SMB_DIRECT
bb4c0419
LL		 395 if (server->rdma) {
396 if (server->sign)
397 rsize = min_t(unsigned int,
398 rsize, server->smbd_conn->max_fragmented_recv_size);
399 else
400 rsize = min_t(unsigned int,
09902f8d 401 rsize, server->smbd_conn->max_readwrite_size);
bb4c0419 402 }
09902f8d 403#endif
bed9da02
PS		 404
405 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
406 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 407
3a3bab50
PS		 408 return rsize;
409}
410
3d621230
SF		 411static unsigned int
412smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
413{
414 struct TCP_Server_Info *server = tcon->ses->server;
415 unsigned int rsize;
416
417 /* start with specified rsize, or default */
418 rsize = volume_info->rsize ? volume_info->rsize : SMB3_DEFAULT_IOSIZE;
419 rsize = min_t(unsigned int, rsize, server->max_read);
420#ifdef CONFIG_CIFS_SMB_DIRECT
421 if (server->rdma) {
422 if (server->sign)
423 rsize = min_t(unsigned int,
424 rsize, server->smbd_conn->max_fragmented_recv_size);
425 else
426 rsize = min_t(unsigned int,
427 rsize, server->smbd_conn->max_readwrite_size);
428 }
429#endif
430
431 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
432 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
433
434 return rsize;
435}
fe856be4
AA		 436
437static int
438parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
439 size_t buf_len,
440 struct cifs_server_iface **iface_list,
441 size_t *iface_count)
442{
443 struct network_interface_info_ioctl_rsp *p;
444 struct sockaddr_in *addr4;
445 struct sockaddr_in6 *addr6;
446 struct iface_info_ipv4 *p4;
447 struct iface_info_ipv6 *p6;
448 struct cifs_server_iface *info;
449 ssize_t bytes_left;
450 size_t next = 0;
451 int nb_iface = 0;
452 int rc = 0;
453
454 *iface_list = NULL;
455 *iface_count = 0;
456
457 /*
458 * Fist pass: count and sanity check
459 */
460
461 bytes_left = buf_len;
462 p = buf;
463 while (bytes_left >= sizeof(*p)) {
464 nb_iface++;
465 next = le32_to_cpu(p->Next);
466 if (!next) {
467 bytes_left -= sizeof(*p);
468 break;
469 }
470 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
471 bytes_left -= next;
472 }
473
474 if (!nb_iface) {
475 cifs_dbg(VFS, "%s: malformed interface info\n", __func__);
476 rc = -EINVAL;
477 goto out;
478 }
479
480 if (bytes_left || p->Next)
481 cifs_dbg(VFS, "%s: incomplete interface info\n", __func__);
482
483
484 /*
485 * Second pass: extract info to internal structure
486 */
487
488 *iface_list = kcalloc(nb_iface, sizeof(**iface_list), GFP_KERNEL);
489 if (!*iface_list) {
490 rc = -ENOMEM;
491 goto out;
492 }
493
494 info = *iface_list;
495 bytes_left = buf_len;
496 p = buf;
497 while (bytes_left >= sizeof(*p)) {
498 info->speed = le64_to_cpu(p->LinkSpeed);
499 info->rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE);
500 info->rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE);
501
502 cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, *iface_count);
503 cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed);
504 cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__,
505 le32_to_cpu(p->Capability));
506
507 switch (p->Family) {
508 /*
509 * The kernel and wire socket structures have the same
510 * layout and use network byte order but make the
511 * conversion explicit in case either one changes.
512 */
513 case INTERNETWORK:
514 addr4 = (struct sockaddr_in *)&info->sockaddr;
515 p4 = (struct iface_info_ipv4 *)p->Buffer;
516 addr4->sin_family = AF_INET;
517 memcpy(&addr4->sin_addr, &p4->IPv4Address, 4);
518
519 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
520 addr4->sin_port = cpu_to_be16(CIFS_PORT);
521
522 cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__,
523 &addr4->sin_addr);
524 break;
525 case INTERNETWORKV6:
526 addr6 = (struct sockaddr_in6 *)&info->sockaddr;
527 p6 = (struct iface_info_ipv6 *)p->Buffer;
528 addr6->sin6_family = AF_INET6;
529 memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16);
530
531 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
532 addr6->sin6_flowinfo = 0;
533 addr6->sin6_scope_id = 0;
534 addr6->sin6_port = cpu_to_be16(CIFS_PORT);
535
536 cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__,
537 &addr6->sin6_addr);
538 break;
539 default:
540 cifs_dbg(VFS,
541 "%s: skipping unsupported socket family\n",
542 __func__);
543 goto next_iface;
544 }
545
546 (*iface_count)++;
547 info++;
548next_iface:
549 next = le32_to_cpu(p->Next);
550 if (!next)
551 break;
552 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
553 bytes_left -= next;
554 }
555
556 if (!*iface_count) {
557 rc = -EINVAL;
558 goto out;
559 }
560
561out:
562 if (rc) {
563 kfree(*iface_list);
564 *iface_count = 0;
565 *iface_list = NULL;
566 }
567 return rc;
568}
569
570
c481e9fe
SF		 571static int
572SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
573{
574 int rc;
575 unsigned int ret_data_len = 0;
fe856be4
AA		 576 struct network_interface_info_ioctl_rsp *out_buf = NULL;
577 struct cifs_server_iface *iface_list;
578 size_t iface_count;
579 struct cifs_ses *ses = tcon->ses;
c481e9fe
SF		 580
581 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
582 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
583 NULL /* no data input */, 0 /* no data input */,
584 (char **)&out_buf, &ret_data_len);
c3ed4402
SF		 585 if (rc == -EOPNOTSUPP) {
586 cifs_dbg(FYI,
587 "server does not support query network interfaces\n");
588 goto out;
589 } else if (rc != 0) {
9ffc5412 590 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
fe856be4 591 goto out;
9ffc5412 592 }
fe856be4
AA		 593
594 rc = parse_server_interfaces(out_buf, ret_data_len,
595 &iface_list, &iface_count);
596 if (rc)
597 goto out;
598
599 spin_lock(&ses->iface_lock);
600 kfree(ses->iface_list);
601 ses->iface_list = iface_list;
602 ses->iface_count = iface_count;
603 ses->iface_last_update = jiffies;
604 spin_unlock(&ses->iface_lock);
605
606out:
24df1483 607 kfree(out_buf);
c481e9fe
SF		 608 return rc;
609}
c481e9fe 610
9da6ec77
RS		 611static void
612smb2_close_cached_fid(struct kref *ref)
a93864d9 613{
9da6ec77
RS		 614 struct cached_fid *cfid = container_of(ref, struct cached_fid,
615 refcount);
616
a93864d9
RS		 617 if (cfid->is_valid) {
618 cifs_dbg(FYI, "clear cached root file handle\n");
619 SMB2_close(0, cfid->tcon, cfid->fid->persistent_fid,
620 cfid->fid->volatile_fid);
621 cfid->is_valid = false;
b0f6df73 622 cfid->file_all_info_is_valid = false;
a93864d9 623 }
9da6ec77
RS		 624}
625
626void close_shroot(struct cached_fid *cfid)
627{
628 mutex_lock(&cfid->fid_mutex);
629 kref_put(&cfid->refcount, smb2_close_cached_fid);
a93864d9
RS		 630 mutex_unlock(&cfid->fid_mutex);
631}
632
9da6ec77
RS		 633void
634smb2_cached_lease_break(struct work_struct *work)
635{
636 struct cached_fid *cfid = container_of(work,
637 struct cached_fid, lease_break);
638
639 close_shroot(cfid);
640}
641
3d4ef9a1
SF		 642/*
643 * Open the directory at the root of a share
644 */
645int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
646{
b0f6df73
RS		 647 struct cifs_ses *ses = tcon->ses;
648 struct TCP_Server_Info *server = ses->server;
649 struct cifs_open_parms oparms;
650 struct smb2_create_rsp *o_rsp = NULL;
651 struct smb2_query_info_rsp *qi_rsp = NULL;
652 int resp_buftype[2];
653 struct smb_rqst rqst[2];
654 struct kvec rsp_iov[2];
655 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
656 struct kvec qi_iov[1];
657 int rc, flags = 0;
658 __le16 utf16_path = 0; /* Null - since an open of top of share */
a93864d9 659 u8 oplock = SMB2_OPLOCK_LEVEL_II;
3d4ef9a1 660
a93864d9
RS		 661 mutex_lock(&tcon->crfid.fid_mutex);
662 if (tcon->crfid.is_valid) {
3d4ef9a1 663 cifs_dbg(FYI, "found a cached root file handle\n");
a93864d9 664 memcpy(pfid, tcon->crfid.fid, sizeof(struct cifs_fid));
9da6ec77 665 kref_get(&tcon->crfid.refcount);
a93864d9 666 mutex_unlock(&tcon->crfid.fid_mutex);
3d4ef9a1
SF		 667 return 0;
668 }
669
b0f6df73
RS		 670 if (smb3_encryption_required(tcon))
671 flags |= CIFS_TRANSFORM_REQ;
672
673 memset(rqst, 0, sizeof(rqst));
674 resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
675 memset(rsp_iov, 0, sizeof(rsp_iov));
676
677 /* Open */
678 memset(&open_iov, 0, sizeof(open_iov));
679 rqst[0].rq_iov = open_iov;
680 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
681
682 oparms.tcon = tcon;
683 oparms.create_options = 0;
684 oparms.desired_access = FILE_READ_ATTRIBUTES;
685 oparms.disposition = FILE_OPEN;
686 oparms.fid = pfid;
687 oparms.reconnect = false;
688
689 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &utf16_path);
690 if (rc)
691 goto oshr_exit;
692 smb2_set_next_command(tcon, &rqst[0]);
693
694 memset(&qi_iov, 0, sizeof(qi_iov));
695 rqst[1].rq_iov = qi_iov;
696 rqst[1].rq_nvec = 1;
697
698 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID,
699 COMPOUND_FID, FILE_ALL_INFORMATION,
700 SMB2_O_INFO_FILE, 0,
701 sizeof(struct smb2_file_all_info) +
702 PATH_MAX * 2, 0, NULL);
703 if (rc)
704 goto oshr_exit;
705
706 smb2_set_related(&rqst[1]);
707
708 rc = compound_send_recv(xid, ses, flags, 2, rqst,
709 resp_buftype, rsp_iov);
710 if (rc)
711 goto oshr_exit;
712
713 o_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
714 oparms.fid->persistent_fid = o_rsp->PersistentFileId;
715 oparms.fid->volatile_fid = o_rsp->VolatileFileId;
716#ifdef CONFIG_CIFS_DEBUG2
717 oparms.fid->mid = le64_to_cpu(o_rsp->sync_hdr.MessageId);
718#endif /* CIFS_DEBUG2 */
719
720 if (o_rsp->OplockLevel == SMB2_OPLOCK_LEVEL_LEASE)
721 oplock = smb2_parse_lease_state(server, o_rsp,
722 &oparms.fid->epoch,
723 oparms.fid->lease_key);
724 else
725 goto oshr_exit;
726
727
728 memcpy(tcon->crfid.fid, pfid, sizeof(struct cifs_fid));
729 tcon->crfid.tcon = tcon;
730 tcon->crfid.is_valid = true;
731 kref_init(&tcon->crfid.refcount);
732 kref_get(&tcon->crfid.refcount);
733
734
735 qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
736 if (le32_to_cpu(qi_rsp->OutputBufferLength) < sizeof(struct smb2_file_all_info))
737 goto oshr_exit;
738 rc = smb2_validate_and_copy_iov(
739 le16_to_cpu(qi_rsp->OutputBufferOffset),
740 sizeof(struct smb2_file_all_info),
741 &rsp_iov[1], sizeof(struct smb2_file_all_info),
742 (char *)&tcon->crfid.file_all_info);
743 if (rc)
744 goto oshr_exit;
745 tcon->crfid.file_all_info_is_valid = 1;
746
747 oshr_exit:
a93864d9 748 mutex_unlock(&tcon->crfid.fid_mutex);
b0f6df73
RS		 749 SMB2_open_free(&rqst[0]);
750 SMB2_query_info_free(&rqst[1]);
751 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
752 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
3d4ef9a1
SF		 753 return rc;
754}
755
af6a12ea
SF		 756static void
757smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
758{
759 int rc;
760 __le16 srch_path = 0; /* Null - open root of share */
761 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
762 struct cifs_open_parms oparms;
763 struct cifs_fid fid;
3d4ef9a1 764 bool no_cached_open = tcon->nohandlecache;
af6a12ea
SF		 765
766 oparms.tcon = tcon;
767 oparms.desired_access = FILE_READ_ATTRIBUTES;
768 oparms.disposition = FILE_OPEN;
769 oparms.create_options = 0;
770 oparms.fid = &fid;
771 oparms.reconnect = false;
772
3d4ef9a1 773 if (no_cached_open)
9d874c36
RS		 774 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
775 NULL);
3d4ef9a1
SF		 776 else
777 rc = open_shroot(xid, tcon, &fid);
778
af6a12ea
SF		 779 if (rc)
780 return;
781
c481e9fe 782 SMB3_request_interfaces(xid, tcon);
c481e9fe 783
af6a12ea
SF		 784 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
785 FS_ATTRIBUTE_INFORMATION);
786 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
787 FS_DEVICE_INFORMATION);
21ba3845
SF		 788 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
789 FS_VOLUME_INFORMATION);
af6a12ea
SF		 790 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
791 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
3d4ef9a1
SF		 792 if (no_cached_open)
793 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
9da6ec77
RS		 794 else
795 close_shroot(&tcon->crfid);
796
af6a12ea
SF		 797 return;
798}
799
34f62640
SF		 800static void
801smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
802{
803 int rc;
804 __le16 srch_path = 0; /* Null - open root of share */
805 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
806 struct cifs_open_parms oparms;
807 struct cifs_fid fid;
808
809 oparms.tcon = tcon;
810 oparms.desired_access = FILE_READ_ATTRIBUTES;
811 oparms.disposition = FILE_OPEN;
812 oparms.create_options = 0;
813 oparms.fid = &fid;
814 oparms.reconnect = false;
815
9d874c36 816 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
34f62640
SF		 817 if (rc)
818 return;
819
2167114c
SF		 820 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
821 FS_ATTRIBUTE_INFORMATION);
822 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
823 FS_DEVICE_INFORMATION);
34f62640
SF		 824 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
825 return;
826}
827
2503a0db
PS		 828static int
829smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
830 struct cifs_sb_info *cifs_sb, const char *full_path)
831{
832 int rc;
2503a0db 833 __le16 *utf16_path;
2e44b288 834 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 835 struct cifs_open_parms oparms;
836 struct cifs_fid fid;
2503a0db 837
a93864d9 838 if ((*full_path == 0) && tcon->crfid.is_valid)
3d4ef9a1
SF		 839 return 0;
840
2503a0db
PS		 841 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
842 if (!utf16_path)
843 return -ENOMEM;
844
064f6047
PS		 845 oparms.tcon = tcon;
846 oparms.desired_access = FILE_READ_ATTRIBUTES;
847 oparms.disposition = FILE_OPEN;
5e19697b
SF		 848 if (backup_cred(cifs_sb))
849 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
850 else
851 oparms.create_options = 0;
064f6047 852 oparms.fid = &fid;
9cbc0b73 853 oparms.reconnect = false;
064f6047 854
9d874c36 855 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2503a0db
PS		 856 if (rc) {
857 kfree(utf16_path);
858 return rc;
859 }
860
064f6047 861 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2503a0db
PS		 862 kfree(utf16_path);
863 return rc;
864}
865
be4cb9e3
PS		 866static int
867smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
868 struct cifs_sb_info *cifs_sb, const char *full_path,
869 u64 *uniqueid, FILE_ALL_INFO *data)
870{
871 *uniqueid = le64_to_cpu(data->IndexNumber);
872 return 0;
873}
874
b7546bc5
PS		 875static int
876smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
877 struct cifs_fid *fid, FILE_ALL_INFO *data)
878{
879 int rc;
880 struct smb2_file_all_info *smb2_data;
881
1bbe4997 882 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
b7546bc5
PS		 883 GFP_KERNEL);
884 if (smb2_data == NULL)
885 return -ENOMEM;
886
887 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
888 smb2_data);
889 if (!rc)
890 move_smb2_info_to_cifs(data, smb2_data);
891 kfree(smb2_data);
892 return rc;
893}
894
1368f155 895#ifdef CONFIG_CIFS_XATTR
95907fea
RS		 896static ssize_t
897move_smb2_ea_to_cifs(char *dst, size_t dst_size,
898 struct smb2_file_full_ea_info *src, size_t src_size,
899 const unsigned char *ea_name)
900{
901 int rc = 0;
902 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
903 char *name, *value;
0c5d6cb6 904 size_t buf_size = dst_size;
95907fea
RS		 905 size_t name_len, value_len, user_name_len;
906
907 while (src_size > 0) {
908 name = &src->ea_data[0];
909 name_len = (size_t)src->ea_name_length;
910 value = &src->ea_data[src->ea_name_length + 1];
911 value_len = (size_t)le16_to_cpu(src->ea_value_length);
912
913 if (name_len == 0) {
914 break;
915 }
916
917 if (src_size < 8 + name_len + 1 + value_len) {
918 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
919 rc = -EIO;
920 goto out;
921 }
922
923 if (ea_name) {
924 if (ea_name_len == name_len &&
925 memcmp(ea_name, name, name_len) == 0) {
926 rc = value_len;
927 if (dst_size == 0)
928 goto out;
929 if (dst_size < value_len) {
930 rc = -ERANGE;
931 goto out;
932 }
933 memcpy(dst, value, value_len);
934 goto out;
935 }
936 } else {
937 /* 'user.' plus a terminating null */
938 user_name_len = 5 + 1 + name_len;
939
0c5d6cb6
RS		 940 if (buf_size == 0) {
941 /* skip copy - calc size only */
942 rc += user_name_len;
943 } else if (dst_size >= user_name_len) {
95907fea
RS		 944 dst_size -= user_name_len;
945 memcpy(dst, "user.", 5);
946 dst += 5;
947 memcpy(dst, src->ea_data, name_len);
948 dst += name_len;
949 *dst = 0;
950 ++dst;
0c5d6cb6 951 rc += user_name_len;
95907fea
RS		 952 } else {
953 /* stop before overrun buffer */
954 rc = -ERANGE;
955 break;
956 }
957 }
958
959 if (!src->next_entry_offset)
960 break;
961
962 if (src_size < le32_to_cpu(src->next_entry_offset)) {
963 /* stop before overrun buffer */
964 rc = -ERANGE;
965 break;
966 }
967 src_size -= le32_to_cpu(src->next_entry_offset);
968 src = (void *)((char *)src +
969 le32_to_cpu(src->next_entry_offset));
970 }
971
972 /* didn't find the named attribute */
973 if (ea_name)
974 rc = -ENODATA;
975
976out:
977 return (ssize_t)rc;
978}
979
980static ssize_t
981smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
982 const unsigned char *path, const unsigned char *ea_name,
983 char *ea_data, size_t buf_size,
984 struct cifs_sb_info *cifs_sb)
985{
986 int rc;
987 __le16 *utf16_path;
f9793b6f
RS		 988 struct kvec rsp_iov = {NULL, 0};
989 int buftype = CIFS_NO_BUFFER;
990 struct smb2_query_info_rsp *rsp;
991 struct smb2_file_full_ea_info *info = NULL;
95907fea
RS		 992
993 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
994 if (!utf16_path)
995 return -ENOMEM;
996
f9793b6f
RS		 997 rc = smb2_query_info_compound(xid, tcon, utf16_path,
998 FILE_READ_EA,
999 FILE_FULL_EA_INFORMATION,
1000 SMB2_O_INFO_FILE,
c4627e66
RS		 1001 CIFSMaxBufSize -
1002 MAX_SMB2_CREATE_RESPONSE_SIZE -
1003 MAX_SMB2_CLOSE_RESPONSE_SIZE,
f9793b6f 1004 &rsp_iov, &buftype, cifs_sb);
95907fea 1005 if (rc) {
f9793b6f
RS		 1006 /*
1007 * If ea_name is NULL (listxattr) and there are no EAs,
1008 * return 0 as it's not an error. Otherwise, the specified
1009 * ea_name was not found.
1010 */
1011 if (!ea_name && rc == -ENODATA)
1012 rc = 0;
1013 goto qeas_exit;
95907fea
RS		 1014 }
1015
f9793b6f
RS		 1016 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
1017 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
1018 le32_to_cpu(rsp->OutputBufferLength),
1019 &rsp_iov,
1020 sizeof(struct smb2_file_full_ea_info));
1021 if (rc)
1022 goto qeas_exit;
95907fea 1023
f9793b6f
RS		 1024 info = (struct smb2_file_full_ea_info *)(
1025 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
1026 rc = move_smb2_ea_to_cifs(ea_data, buf_size, info,
1027 le32_to_cpu(rsp->OutputBufferLength), ea_name);
95907fea 1028
f9793b6f
RS		 1029 qeas_exit:
1030 kfree(utf16_path);
1031 free_rsp_buf(buftype, rsp_iov.iov_base);
95907fea
RS		 1032 return rc;
1033}
1034
5517554e
RS		 1035
1036static int
1037smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
1038 const char *path, const char *ea_name, const void *ea_value,
1039 const __u16 ea_value_len, const struct nls_table *nls_codepage,
1040 struct cifs_sb_info *cifs_sb)
1041{
0967e545 1042 struct cifs_ses *ses = tcon->ses;
0967e545 1043 __le16 *utf16_path = NULL;
5517554e 1044 int ea_name_len = strlen(ea_name);
0967e545 1045 int flags = 0;
5517554e 1046 int len;
0967e545
RS		 1047 struct smb_rqst rqst[3];
1048 int resp_buftype[3];
1049 struct kvec rsp_iov[3];
1050 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
1051 struct cifs_open_parms oparms;
1052 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1053 struct cifs_fid fid;
1054 struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
1055 unsigned int size[1];
1056 void *data[1];
1057 struct smb2_file_full_ea_info *ea = NULL;
1058 struct kvec close_iov[1];
1059 int rc;
1060
1061 if (smb3_encryption_required(tcon))
1062 flags |= CIFS_TRANSFORM_REQ;
5517554e
RS		 1063
1064 if (ea_name_len > 255)
1065 return -EINVAL;
1066
1067 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1068 if (!utf16_path)
1069 return -ENOMEM;
1070
0967e545
RS		 1071 memset(rqst, 0, sizeof(rqst));
1072 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1073 memset(rsp_iov, 0, sizeof(rsp_iov));
1074
21094641
RS		 1075 if (ses->server->ops->query_all_EAs) {
1076 if (!ea_value) {
1077 rc = ses->server->ops->query_all_EAs(xid, tcon, path,
1078 ea_name, NULL, 0,
1079 cifs_sb);
1080 if (rc == -ENODATA)
1081 goto sea_exit;
1082 }
1083 }
1084
0967e545
RS		 1085 /* Open */
1086 memset(&open_iov, 0, sizeof(open_iov));
1087 rqst[0].rq_iov = open_iov;
1088 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1089
1090 memset(&oparms, 0, sizeof(oparms));
5517554e
RS		 1091 oparms.tcon = tcon;
1092 oparms.desired_access = FILE_WRITE_EA;
1093 oparms.disposition = FILE_OPEN;
5e19697b
SF		 1094 if (backup_cred(cifs_sb))
1095 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1096 else
1097 oparms.create_options = 0;
5517554e
RS		 1098 oparms.fid = &fid;
1099 oparms.reconnect = false;
1100
0967e545
RS		 1101 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
1102 if (rc)
1103 goto sea_exit;
e77fe73c 1104 smb2_set_next_command(tcon, &rqst[0]);
0967e545
RS		 1105
1106
1107 /* Set Info */
1108 memset(&si_iov, 0, sizeof(si_iov));
1109 rqst[1].rq_iov = si_iov;
1110 rqst[1].rq_nvec = 1;
5517554e
RS		 1111
1112 len = sizeof(ea) + ea_name_len + ea_value_len + 1;
1113 ea = kzalloc(len, GFP_KERNEL);
1114 if (ea == NULL) {
0967e545
RS		 1115 rc = -ENOMEM;
1116 goto sea_exit;
5517554e
RS		 1117 }
1118
1119 ea->ea_name_length = ea_name_len;
1120 ea->ea_value_length = cpu_to_le16(ea_value_len);
1121 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
1122 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
1123
0967e545
RS		 1124 size[0] = len;
1125 data[0] = ea;
1126
1127 rc = SMB2_set_info_init(tcon, &rqst[1], COMPOUND_FID,
1128 COMPOUND_FID, current->tgid,
1129 FILE_FULL_EA_INFORMATION,
1130 SMB2_O_INFO_FILE, 0, data, size);
e77fe73c 1131 smb2_set_next_command(tcon, &rqst[1]);
0967e545 1132 smb2_set_related(&rqst[1]);
6aa0c114 1133
5517554e 1134
0967e545
RS		 1135 /* Close */
1136 memset(&close_iov, 0, sizeof(close_iov));
1137 rqst[2].rq_iov = close_iov;
1138 rqst[2].rq_nvec = 1;
1139 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
1140 smb2_set_related(&rqst[2]);
1141
1142 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1143 resp_buftype, rsp_iov);
1144
1145 sea_exit:
1146 kfree(ea);
1147 kfree(utf16_path);
1148 SMB2_open_free(&rqst[0]);
1149 SMB2_set_info_free(&rqst[1]);
1150 SMB2_close_free(&rqst[2]);
1151 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1152 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1153 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
5517554e
RS		 1154 return rc;
1155}
1368f155 1156#endif
5517554e 1157
9094fad1
PS		 1158static bool
1159smb2_can_echo(struct TCP_Server_Info *server)
1160{
1161 return server->echoes;
1162}
1163
d60622eb
PS		 1164static void
1165smb2_clear_stats(struct cifs_tcon *tcon)
1166{
d60622eb
PS		 1167 int i;
1168 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
1169 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
1170 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
1171 }
d60622eb
PS		 1172}
1173
769ee6a4
SF		 1174static void
1175smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
1176{
1177 seq_puts(m, "\n\tShare Capabilities:");
1178 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
1179 seq_puts(m, " DFS,");
1180 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
1181 seq_puts(m, " CONTINUOUS AVAILABILITY,");
1182 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
1183 seq_puts(m, " SCALEOUT,");
1184 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
1185 seq_puts(m, " CLUSTER,");
1186 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
1187 seq_puts(m, " ASYMMETRIC,");
1188 if (tcon->capabilities == 0)
1189 seq_puts(m, " None");
af6a12ea
SF		 1190 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
1191 seq_puts(m, " Aligned,");
1192 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
1193 seq_puts(m, " Partition Aligned,");
1194 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
1195 seq_puts(m, " SSD,");
1196 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
1197 seq_puts(m, " TRIM-support,");
1198
769ee6a4 1199 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
e0386e44 1200 seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
af6a12ea
SF		 1201 if (tcon->perf_sector_size)
1202 seq_printf(m, "\tOptimal sector size: 0x%x",
1203 tcon->perf_sector_size);
e0386e44 1204 seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
769ee6a4
SF		 1205}
1206
d60622eb
PS		 1207static void
1208smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
1209{
d60622eb
PS		 1210 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
1211 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
1995d28f
SF		 1212
1213 /*
1214 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
1215 * totals (requests sent) since those SMBs are per-session not per tcon
1216 */
52ce1ac4
SF		 1217 seq_printf(m, "\nBytes read: %llu Bytes written: %llu",
1218 (long long)(tcon->bytes_read),
1219 (long long)(tcon->bytes_written));
fae8044c
SF		 1220 seq_printf(m, "\nOpen files: %d total (local), %d open on server",
1221 atomic_read(&tcon->num_local_opens),
1222 atomic_read(&tcon->num_remote_opens));
1995d28f 1223 seq_printf(m, "\nTreeConnects: %d total %d failed",
d60622eb
PS		 1224 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
1225 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
1995d28f 1226 seq_printf(m, "\nTreeDisconnects: %d total %d failed",
d60622eb
PS		 1227 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
1228 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
1995d28f 1229 seq_printf(m, "\nCreates: %d total %d failed",
d60622eb
PS		 1230 atomic_read(&sent[SMB2_CREATE_HE]),
1231 atomic_read(&failed[SMB2_CREATE_HE]));
1995d28f 1232 seq_printf(m, "\nCloses: %d total %d failed",
d60622eb
PS		 1233 atomic_read(&sent[SMB2_CLOSE_HE]),
1234 atomic_read(&failed[SMB2_CLOSE_HE]));
1995d28f 1235 seq_printf(m, "\nFlushes: %d total %d failed",
d60622eb
PS		 1236 atomic_read(&sent[SMB2_FLUSH_HE]),
1237 atomic_read(&failed[SMB2_FLUSH_HE]));
1995d28f 1238 seq_printf(m, "\nReads: %d total %d failed",
d60622eb
PS		 1239 atomic_read(&sent[SMB2_READ_HE]),
1240 atomic_read(&failed[SMB2_READ_HE]));
1995d28f 1241 seq_printf(m, "\nWrites: %d total %d failed",
d60622eb
PS		 1242 atomic_read(&sent[SMB2_WRITE_HE]),
1243 atomic_read(&failed[SMB2_WRITE_HE]));
1995d28f 1244 seq_printf(m, "\nLocks: %d total %d failed",
d60622eb
PS		 1245 atomic_read(&sent[SMB2_LOCK_HE]),
1246 atomic_read(&failed[SMB2_LOCK_HE]));
1995d28f 1247 seq_printf(m, "\nIOCTLs: %d total %d failed",
d60622eb
PS		 1248 atomic_read(&sent[SMB2_IOCTL_HE]),
1249 atomic_read(&failed[SMB2_IOCTL_HE]));
1995d28f 1250 seq_printf(m, "\nQueryDirectories: %d total %d failed",
d60622eb
PS		 1251 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
1252 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
1995d28f 1253 seq_printf(m, "\nChangeNotifies: %d total %d failed",
d60622eb
PS		 1254 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
1255 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
1995d28f 1256 seq_printf(m, "\nQueryInfos: %d total %d failed",
d60622eb
PS		 1257 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
1258 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
1995d28f 1259 seq_printf(m, "\nSetInfos: %d total %d failed",
d60622eb
PS		 1260 atomic_read(&sent[SMB2_SET_INFO_HE]),
1261 atomic_read(&failed[SMB2_SET_INFO_HE]));
1262 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
1263 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
1264 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
d60622eb
PS		 1265}
1266
f0df737e
PS		 1267static void
1268smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
1269{
2b0143b5 1270 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
53ef1016
PS		 1271 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
1272
f0df737e
PS		 1273 cfile->fid.persistent_fid = fid->persistent_fid;
1274 cfile->fid.volatile_fid = fid->volatile_fid;
dfe33f9a
SF		 1275#ifdef CONFIG_CIFS_DEBUG2
1276 cfile->fid.mid = fid->mid;
1277#endif /* CIFS_DEBUG2 */
42873b0a
PS		 1278 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
1279 &fid->purge_cache);
18cceb6a 1280 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
94f87371 1281 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
f0df737e
PS		 1282}
1283
760ad0ca 1284static void
f0df737e
PS		 1285smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
1286 struct cifs_fid *fid)
1287{
760ad0ca 1288 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
f0df737e
PS		 1289}
1290
41c1358e
SF		 1291static int
1292SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
1293 u64 persistent_fid, u64 volatile_fid,
1294 struct copychunk_ioctl *pcchunk)
1295{
1296 int rc;
1297 unsigned int ret_data_len;
1298 struct resume_key_req *res_key;
1299
1300 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
1301 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
1302 NULL, 0 /* no input */,
1303 (char **)&res_key, &ret_data_len);
1304
1305 if (rc) {
1306 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
1307 goto req_res_key_exit;
1308 }
1309 if (ret_data_len < sizeof(struct resume_key_req)) {
1310 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
1311 rc = -EINVAL;
1312 goto req_res_key_exit;
1313 }
1314 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
1315
1316req_res_key_exit:
1317 kfree(res_key);
1318 return rc;
1319}
1320
f5b05d62
RS		 1321static int
1322smb2_ioctl_query_info(const unsigned int xid,
8d8b26e5
RS		 1323 struct cifs_tcon *tcon,
1324 __le16 *path, int is_dir,
f5b05d62
RS		 1325 unsigned long p)
1326{
f5b05d62
RS		 1327 struct cifs_ses *ses = tcon->ses;
1328 char __user *arg = (char __user *)p;
1329 struct smb_query_info qi;
1330 struct smb_query_info __user *pqi;
1331 int rc = 0;
1332 int flags = 0;
f5b05d62 1333 struct smb2_query_info_rsp *rsp = NULL;
8d8b26e5
RS		 1334 void *buffer = NULL;
1335 struct smb_rqst rqst[3];
1336 int resp_buftype[3];
1337 struct kvec rsp_iov[3];
1338 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
1339 struct cifs_open_parms oparms;
1340 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1341 struct cifs_fid fid;
1342 struct kvec qi_iov[1];
1343 struct kvec close_iov[1];
1344
1345 memset(rqst, 0, sizeof(rqst));
1346 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1347 memset(rsp_iov, 0, sizeof(rsp_iov));
f5b05d62
RS		 1348
1349 if (copy_from_user(&qi, arg, sizeof(struct smb_query_info)))
1350 return -EFAULT;
1351
1352 if (qi.output_buffer_length > 1024)
1353 return -EINVAL;
1354
1355 if (!ses || !(ses->server))
1356 return -EIO;
1357
1358 if (smb3_encryption_required(tcon))
1359 flags |= CIFS_TRANSFORM_REQ;
1360
1361 buffer = kmalloc(qi.output_buffer_length, GFP_KERNEL);
1362 if (buffer == NULL)
1363 return -ENOMEM;
1364
1365 if (copy_from_user(buffer, arg + sizeof(struct smb_query_info),
1366 qi.output_buffer_length)) {
8d8b26e5
RS		 1367 rc = -EFAULT;
1368 goto iqinf_exit;
f5b05d62
RS		 1369 }
1370
8d8b26e5
RS		 1371 /* Open */
1372 memset(&open_iov, 0, sizeof(open_iov));
1373 rqst[0].rq_iov = open_iov;
1374 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1375
1376 memset(&oparms, 0, sizeof(oparms));
1377 oparms.tcon = tcon;
1378 oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
1379 oparms.disposition = FILE_OPEN;
1380 if (is_dir)
1381 oparms.create_options = CREATE_NOT_FILE;
1382 else
1383 oparms.create_options = CREATE_NOT_DIR;
1384 oparms.fid = &fid;
1385 oparms.reconnect = false;
1386
1387 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, path);
1388 if (rc)
1389 goto iqinf_exit;
e77fe73c 1390 smb2_set_next_command(tcon, &rqst[0]);
8d8b26e5
RS		 1391
1392 /* Query */
31ba4331
SF		 1393 if (qi.flags & PASSTHRU_FSCTL) {
1394 /* Can eventually relax perm check since server enforces too */
1395 if (!capable(CAP_SYS_ADMIN))
1396 rc = -EPERM;
1397 else /* TBD: Add code to compound FSCTL */
1398 rc = -EOPNOTSUPP;
1399 } else if (qi.flags == PASSTHRU_QUERY_INFO) {
1400 memset(&qi_iov, 0, sizeof(qi_iov));
1401 rqst[1].rq_iov = qi_iov;
1402 rqst[1].rq_nvec = 1;
1403
1404 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID,
1405 COMPOUND_FID, qi.file_info_class,
1406 qi.info_type, qi.additional_information,
f5b05d62
RS		 1407 qi.input_buffer_length,
1408 qi.output_buffer_length, buffer);
31ba4331
SF		 1409 } else { /* unknown flags */
1410 cifs_dbg(VFS, "invalid passthru query flags: 0x%x\n", qi.flags);
1411 rc = -EINVAL;
1412 }
1413
f5b05d62
RS		 1414 if (rc)
1415 goto iqinf_exit;
e77fe73c 1416 smb2_set_next_command(tcon, &rqst[1]);
8d8b26e5
RS		 1417 smb2_set_related(&rqst[1]);
1418
1419 /* Close */
1420 memset(&close_iov, 0, sizeof(close_iov));
1421 rqst[2].rq_iov = close_iov;
1422 rqst[2].rq_nvec = 1;
f5b05d62 1423
8d8b26e5 1424 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
f5b05d62
RS		 1425 if (rc)
1426 goto iqinf_exit;
8d8b26e5 1427 smb2_set_related(&rqst[2]);
f5b05d62 1428
8d8b26e5
RS		 1429 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1430 resp_buftype, rsp_iov);
1431 if (rc)
1432 goto iqinf_exit;
f5b05d62 1433 pqi = (struct smb_query_info __user *)arg;
8d8b26e5 1434 rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
f5b05d62
RS		 1435 if (le32_to_cpu(rsp->OutputBufferLength) < qi.input_buffer_length)
1436 qi.input_buffer_length = le32_to_cpu(rsp->OutputBufferLength);
1437 if (copy_to_user(&pqi->input_buffer_length, &qi.input_buffer_length,
1438 sizeof(qi.input_buffer_length))) {
1439 rc = -EFAULT;
1440 goto iqinf_exit;
1441 }
1442 if (copy_to_user(pqi + 1, rsp->Buffer, qi.input_buffer_length)) {
1443 rc = -EFAULT;
1444 goto iqinf_exit;
1445 }
1446
1447 iqinf_exit:
8d8b26e5
RS		 1448 kfree(buffer);
1449 SMB2_open_free(&rqst[0]);
1450 SMB2_query_info_free(&rqst[1]);
1451 SMB2_close_free(&rqst[2]);
1452 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1453 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1454 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
f5b05d62
RS		 1455 return rc;
1456}
1457
620d8745 1458static ssize_t
312bbc59 1459smb2_copychunk_range(const unsigned int xid,
41c1358e
SF		 1460 struct cifsFileInfo *srcfile,
1461 struct cifsFileInfo *trgtfile, u64 src_off,
1462 u64 len, u64 dest_off)
1463{
1464 int rc;
1465 unsigned int ret_data_len;
1466 struct copychunk_ioctl *pcchunk;
9bf0c9cd
SF		 1467 struct copychunk_ioctl_rsp *retbuf = NULL;
1468 struct cifs_tcon *tcon;
1469 int chunks_copied = 0;
1470 bool chunk_sizes_updated = false;
620d8745 1471 ssize_t bytes_written, total_bytes_written = 0;
41c1358e
SF		 1472
1473 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
1474
1475 if (pcchunk == NULL)
1476 return -ENOMEM;
1477
312bbc59 1478 cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
41c1358e
SF		 1479 /* Request a key from the server to identify the source of the copy */
1480 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
1481 srcfile->fid.persistent_fid,
1482 srcfile->fid.volatile_fid, pcchunk);
1483
1484 /* Note: request_res_key sets res_key null only if rc !=0 */
1485 if (rc)
9bf0c9cd 1486 goto cchunk_out;
41c1358e
SF		 1487
1488 /* For now array only one chunk long, will make more flexible later */
bc09d141 1489 pcchunk->ChunkCount = cpu_to_le32(1);
41c1358e 1490 pcchunk->Reserved = 0;
41c1358e
SF		 1491 pcchunk->Reserved2 = 0;
1492
9bf0c9cd 1493 tcon = tlink_tcon(trgtfile->tlink);
41c1358e 1494
9bf0c9cd
SF		 1495 while (len > 0) {
1496 pcchunk->SourceOffset = cpu_to_le64(src_off);
1497 pcchunk->TargetOffset = cpu_to_le64(dest_off);
1498 pcchunk->Length =
1499 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
41c1358e 1500
9bf0c9cd
SF		 1501 /* Request server copy to target from src identified by key */
1502 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1503 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
63a83b86 1504 true /* is_fsctl */, (char *)pcchunk,
9bf0c9cd
SF		 1505 sizeof(struct copychunk_ioctl), (char **)&retbuf,
1506 &ret_data_len);
1507 if (rc == 0) {
1508 if (ret_data_len !=
1509 sizeof(struct copychunk_ioctl_rsp)) {
1510 cifs_dbg(VFS, "invalid cchunk response size\n");
1511 rc = -EIO;
1512 goto cchunk_out;
1513 }
1514 if (retbuf->TotalBytesWritten == 0) {
1515 cifs_dbg(FYI, "no bytes copied\n");
1516 rc = -EIO;
1517 goto cchunk_out;
1518 }
1519 /*
1520 * Check if server claimed to write more than we asked
1521 */
1522 if (le32_to_cpu(retbuf->TotalBytesWritten) >
1523 le32_to_cpu(pcchunk->Length)) {
1524 cifs_dbg(VFS, "invalid copy chunk response\n");
1525 rc = -EIO;
1526 goto cchunk_out;
1527 }
1528 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
1529 cifs_dbg(VFS, "invalid num chunks written\n");
1530 rc = -EIO;
1531 goto cchunk_out;
1532 }
1533 chunks_copied++;
1534
620d8745
SP		 1535 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
1536 src_off += bytes_written;
1537 dest_off += bytes_written;
1538 len -= bytes_written;
1539 total_bytes_written += bytes_written;
9bf0c9cd 1540
620d8745 1541 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
9bf0c9cd
SF		 1542 le32_to_cpu(retbuf->ChunksWritten),
1543 le32_to_cpu(retbuf->ChunkBytesWritten),
620d8745 1544 bytes_written);
9bf0c9cd
SF		 1545 } else if (rc == -EINVAL) {
1546 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
1547 goto cchunk_out;
1548
1549 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1550 le32_to_cpu(retbuf->ChunksWritten),
1551 le32_to_cpu(retbuf->ChunkBytesWritten),
1552 le32_to_cpu(retbuf->TotalBytesWritten));
1553
1554 /*
1555 * Check if this is the first request using these sizes,
1556 * (ie check if copy succeed once with original sizes
1557 * and check if the server gave us different sizes after
1558 * we already updated max sizes on previous request).
1559 * if not then why is the server returning an error now
1560 */
1561 if ((chunks_copied != 0) || chunk_sizes_updated)
1562 goto cchunk_out;
1563
1564 /* Check that server is not asking us to grow size */
1565 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
1566 tcon->max_bytes_chunk)
1567 tcon->max_bytes_chunk =
1568 le32_to_cpu(retbuf->ChunkBytesWritten);
1569 else
1570 goto cchunk_out; /* server gave us bogus size */
1571
1572 /* No need to change MaxChunks since already set to 1 */
1573 chunk_sizes_updated = true;
2477bc58
SP		 1574 } else
1575 goto cchunk_out;
9bf0c9cd 1576 }
41c1358e 1577
9bf0c9cd 1578cchunk_out:
41c1358e 1579 kfree(pcchunk);
24df1483 1580 kfree(retbuf);
620d8745
SP		 1581 if (rc)
1582 return rc;
1583 else
1584 return total_bytes_written;
41c1358e
SF		 1585}
1586
7a5cfb19
PS		 1587static int
1588smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1589 struct cifs_fid *fid)
1590{
1591 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1592}
1593
09a4707e
PS		 1594static unsigned int
1595smb2_read_data_offset(char *buf)
1596{
1597 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1598 return rsp->DataOffset;
1599}
1600
1601static unsigned int
74dcf418 1602smb2_read_data_length(char *buf, bool in_remaining)
09a4707e
PS		 1603{
1604 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
74dcf418
LL		 1605
1606 if (in_remaining)
1607 return le32_to_cpu(rsp->DataRemaining);
1608
09a4707e
PS		 1609 return le32_to_cpu(rsp->DataLength);
1610}
1611
d8e05039
PS		 1612
1613static int
db8b631d 1614smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
d8e05039
PS		 1615 struct cifs_io_parms *parms, unsigned int *bytes_read,
1616 char **buf, int *buf_type)
1617{
db8b631d
SF		 1618 parms->persistent_fid = pfid->persistent_fid;
1619 parms->volatile_fid = pfid->volatile_fid;
d8e05039
PS		 1620 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1621}
1622
009d3443 1623static int
db8b631d 1624smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
009d3443
PS		 1625 struct cifs_io_parms *parms, unsigned int *written,
1626 struct kvec *iov, unsigned long nr_segs)
1627{
1628
db8b631d
SF		 1629 parms->persistent_fid = pfid->persistent_fid;
1630 parms->volatile_fid = pfid->volatile_fid;
009d3443
PS		 1631 return SMB2_write(xid, parms, written, iov, nr_segs);
1632}
1633
d43cc793
SF		 1634/* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1635static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1636 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1637{
1638 struct cifsInodeInfo *cifsi;
1639 int rc;
1640
1641 cifsi = CIFS_I(inode);
1642
1643 /* if file already sparse don't bother setting sparse again */
1644 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1645 return true; /* already sparse */
1646
1647 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1648 return true; /* already not sparse */
1649
1650 /*
1651 * Can't check for sparse support on share the usual way via the
1652 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1653 * since Samba server doesn't set the flag on the share, yet
1654 * supports the set sparse FSCTL and returns sparse correctly
1655 * in the file attributes. If we fail setting sparse though we
1656 * mark that server does not support sparse files for this share
1657 * to avoid repeatedly sending the unsupported fsctl to server
1658 * if the file is repeatedly extended.
1659 */
1660 if (tcon->broken_sparse_sup)
1661 return false;
1662
1663 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1664 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
63a83b86 1665 true /* is_fctl */,
51146625 1666 &setsparse, 1, NULL, NULL);
d43cc793
SF		 1667 if (rc) {
1668 tcon->broken_sparse_sup = true;
1669 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1670 return false;
1671 }
1672
1673 if (setsparse)
1674 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1675 else
1676 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1677
1678 return true;
1679}
1680
c839ff24
PS		 1681static int
1682smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1683 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1684{
1685 __le64 eof = cpu_to_le64(size);
3d1a3745
SF		 1686 struct inode *inode;
1687
1688 /*
1689 * If extending file more than one page make sparse. Many Linux fs
1690 * make files sparse by default when extending via ftruncate
1691 */
2b0143b5 1692 inode = d_inode(cfile->dentry);
3d1a3745
SF		 1693
1694 if (!set_alloc && (size > inode->i_size + 8192)) {
3d1a3745 1695 __u8 set_sparse = 1;
d43cc793
SF		 1696
1697 /* whether set sparse succeeds or not, extend the file */
1698 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
3d1a3745
SF		 1699 }
1700
c839ff24 1701 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3764cbd1 1702 cfile->fid.volatile_fid, cfile->pid, &eof);
c839ff24
PS		 1703}
1704
02b16665
SF		 1705static int
1706smb2_duplicate_extents(const unsigned int xid,
1707 struct cifsFileInfo *srcfile,
1708 struct cifsFileInfo *trgtfile, u64 src_off,
1709 u64 len, u64 dest_off)
1710{
1711 int rc;
1712 unsigned int ret_data_len;
02b16665
SF		 1713 struct duplicate_extents_to_file dup_ext_buf;
1714 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1715
1716 /* server fileays advertise duplicate extent support with this flag */
1717 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1718 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1719 return -EOPNOTSUPP;
1720
1721 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1722 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1723 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1724 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1725 dup_ext_buf.ByteCount = cpu_to_le64(len);
1726 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
1727 src_off, dest_off, len);
1728
1729 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1730 if (rc)
1731 goto duplicate_extents_out;
1732
1733 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1734 trgtfile->fid.volatile_fid,
1735 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
63a83b86 1736 true /* is_fsctl */,
51146625 1737 (char *)&dup_ext_buf,
02b16665 1738 sizeof(struct duplicate_extents_to_file),
24df1483 1739 NULL,
02b16665
SF		 1740 &ret_data_len);
1741
1742 if (ret_data_len > 0)
1743 cifs_dbg(FYI, "non-zero response length in duplicate extents");
1744
1745duplicate_extents_out:
1746 return rc;
1747}
02b16665 1748
64a5cfa6
SF		 1749static int
1750smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
1751 struct cifsFileInfo *cfile)
1752{
1753 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
1754 cfile->fid.volatile_fid);
1755}
1756
b3152e2c
SF		 1757static int
1758smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
1759 struct cifsFileInfo *cfile)
1760{
1761 struct fsctl_set_integrity_information_req integr_info;
b3152e2c
SF		 1762 unsigned int ret_data_len;
1763
1764 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
1765 integr_info.Flags = 0;
1766 integr_info.Reserved = 0;
1767
1768 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1769 cfile->fid.volatile_fid,
1770 FSCTL_SET_INTEGRITY_INFORMATION,
63a83b86 1771 true /* is_fsctl */,
51146625 1772 (char *)&integr_info,
b3152e2c 1773 sizeof(struct fsctl_set_integrity_information_req),
24df1483 1774 NULL,
b3152e2c
SF		 1775 &ret_data_len);
1776
1777}
1778
e02789a5
SF		 1779/* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
1780#define GMT_TOKEN_SIZE 50
1781
1782/*
1783 * Input buffer contains (empty) struct smb_snapshot array with size filled in
1784 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
1785 */
834170c8
SF		 1786static int
1787smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
1788 struct cifsFileInfo *cfile, void __user *ioc_buf)
1789{
1790 char *retbuf = NULL;
1791 unsigned int ret_data_len = 0;
1792 int rc;
1793 struct smb_snapshot_array snapshot_in;
1794
1795 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1796 cfile->fid.volatile_fid,
1797 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
63a83b86 1798 true /* is_fsctl */,
51146625 1799 NULL, 0 /* no input data */,
834170c8
SF		 1800 (char **)&retbuf,
1801 &ret_data_len);
1802 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
1803 rc, ret_data_len);
1804 if (rc)
1805 return rc;
1806
1807 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
1808 /* Fixup buffer */
1809 if (copy_from_user(&snapshot_in, ioc_buf,
1810 sizeof(struct smb_snapshot_array))) {
1811 rc = -EFAULT;
1812 kfree(retbuf);
1813 return rc;
1814 }
834170c8 1815
e02789a5
SF		 1816 /*
1817 * Check for min size, ie not large enough to fit even one GMT
1818 * token (snapshot). On the first ioctl some users may pass in
1819 * smaller size (or zero) to simply get the size of the array
1820 * so the user space caller can allocate sufficient memory
1821 * and retry the ioctl again with larger array size sufficient
1822 * to hold all of the snapshot GMT tokens on the second try.
1823 */
1824 if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
1825 ret_data_len = sizeof(struct smb_snapshot_array);
1826
1827 /*
1828 * We return struct SRV_SNAPSHOT_ARRAY, followed by
1829 * the snapshot array (of 50 byte GMT tokens) each
1830 * representing an available previous version of the data
1831 */
1832 if (ret_data_len > (snapshot_in.snapshot_array_size +
1833 sizeof(struct smb_snapshot_array)))
1834 ret_data_len = snapshot_in.snapshot_array_size +
1835 sizeof(struct smb_snapshot_array);
834170c8
SF		 1836
1837 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
1838 rc = -EFAULT;
1839 }
1840
1841 kfree(retbuf);
1842 return rc;
1843}
1844
d324f08d
PS		 1845static int
1846smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
1847 const char *path, struct cifs_sb_info *cifs_sb,
1848 struct cifs_fid *fid, __u16 search_flags,
1849 struct cifs_search_info *srch_inf)
1850{
1851 __le16 *utf16_path;
1852 int rc;
2e44b288 1853 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047 1854 struct cifs_open_parms oparms;
d324f08d
PS		 1855
1856 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1857 if (!utf16_path)
1858 return -ENOMEM;
1859
064f6047
PS		 1860 oparms.tcon = tcon;
1861 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
1862 oparms.disposition = FILE_OPEN;
5e19697b
SF		 1863 if (backup_cred(cifs_sb))
1864 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1865 else
1866 oparms.create_options = 0;
064f6047 1867 oparms.fid = fid;
9cbc0b73 1868 oparms.reconnect = false;
064f6047 1869
9d874c36 1870 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
d324f08d
PS		 1871 kfree(utf16_path);
1872 if (rc) {
dcd87838 1873 cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
d324f08d
PS		 1874 return rc;
1875 }
1876
1877 srch_inf->entries_in_buffer = 0;
0595751f 1878 srch_inf->index_of_last_entry = 2;
d324f08d 1879
064f6047
PS		 1880 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
1881 fid->volatile_fid, 0, srch_inf);
d324f08d 1882 if (rc) {
dcd87838 1883 cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
064f6047 1884 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
d324f08d
PS		 1885 }
1886 return rc;
1887}
1888
1889static int
1890smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
1891 struct cifs_fid *fid, __u16 search_flags,
1892 struct cifs_search_info *srch_inf)
1893{
1894 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
1895 fid->volatile_fid, 0, srch_inf);
1896}
1897
1898static int
1899smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1900 struct cifs_fid *fid)
1901{
1902 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1903}
1904
2e44b288
PS		 1905/*
1906* If we negotiate SMB2 protocol and get STATUS_PENDING - update
1907* the number of credits and return true. Otherwise - return false.
1908*/
1909static bool
66265f13 1910smb2_is_status_pending(char *buf, struct TCP_Server_Info *server)
2e44b288 1911{
49f466bd 1912 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2e44b288 1913
31473fc4 1914 if (shdr->Status != STATUS_PENDING)
2e44b288
PS		 1915 return false;
1916
66265f13 1917 if (shdr->CreditRequest) {
2e44b288 1918 spin_lock(&server->req_lock);
31473fc4 1919 server->credits += le16_to_cpu(shdr->CreditRequest);
2e44b288
PS		 1920 spin_unlock(&server->req_lock);
1921 wake_up(&server->request_q);
1922 }
1923
1924 return true;
1925}
1926
511c54a2
PS		 1927static bool
1928smb2_is_session_expired(char *buf)
1929{
49f466bd 1930 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
511c54a2 1931
d81243c6
MS		 1932 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
1933 shdr->Status != STATUS_USER_SESSION_DELETED)
511c54a2
PS		 1934 return false;
1935
e68a932b
SF		 1936 trace_smb3_ses_expired(shdr->TreeId, shdr->SessionId,
1937 le16_to_cpu(shdr->Command),
1938 le64_to_cpu(shdr->MessageId));
d81243c6 1939 cifs_dbg(FYI, "Session expired or deleted\n");
e68a932b 1940
511c54a2
PS		 1941 return true;
1942}
1943
983c88a4
PS		 1944static int
1945smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1946 struct cifsInodeInfo *cinode)
1947{
0822f514
PS		 1948 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1949 return SMB2_lease_break(0, tcon, cinode->lease_key,
1950 smb2_get_lease_state(cinode));
1951
983c88a4
PS		 1952 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1953 fid->volatile_fid,
18cceb6a 1954 CIFS_CACHE_READ(cinode) ? 1 : 0);
983c88a4
PS		 1955}
1956
c5a5f38f 1957void
730928c8
RS		 1958smb2_set_related(struct smb_rqst *rqst)
1959{
1960 struct smb2_sync_hdr *shdr;
1961
1962 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
1963 shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
1964}
1965
1966char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
1967
c5a5f38f 1968void
e77fe73c 1969smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst)
730928c8
RS		 1970{
1971 struct smb2_sync_hdr *shdr;
e77fe73c
RS		 1972 struct cifs_ses *ses = tcon->ses;
1973 struct TCP_Server_Info *server = ses->server;
730928c8 1974 unsigned long len = smb_rqst_len(server, rqst);
e77fe73c 1975 int i, num_padding;
730928c8
RS		 1976
1977 /* SMB headers in a compound are 8 byte aligned. */
e77fe73c
RS		 1978
1979 /* No padding needed */
1980 if (!(len & 7))
1981 goto finished;
1982
1983 num_padding = 8 - (len & 7);
1984 if (!smb3_encryption_required(tcon)) {
1985 /*
1986 * If we do not have encryption then we can just add an extra
1987 * iov for the padding.
1988 */
1989 rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
1990 rqst->rq_iov[rqst->rq_nvec].iov_len = num_padding;
1991 rqst->rq_nvec++;
1992 len += num_padding;
1993 } else {
1994 /*
1995 * We can not add a small padding iov for the encryption case
1996 * because the encryption framework can not handle the padding
1997 * iovs.
1998 * We have to flatten this into a single buffer and add
1999 * the padding to it.
2000 */
2001 for (i = 1; i < rqst->rq_nvec; i++) {
2002 memcpy(rqst->rq_iov[0].iov_base +
2003 rqst->rq_iov[0].iov_len,
2004 rqst->rq_iov[i].iov_base,
2005 rqst->rq_iov[i].iov_len);
2006 rqst->rq_iov[0].iov_len += rqst->rq_iov[i].iov_len;
271b9c0c 2007 }
e77fe73c
RS		 2008 memset(rqst->rq_iov[0].iov_base + rqst->rq_iov[0].iov_len,
2009 0, num_padding);
2010 rqst->rq_iov[0].iov_len += num_padding;
2011 len += num_padding;
2012 rqst->rq_nvec = 1;
730928c8
RS		 2013 }
2014
e77fe73c 2015 finished:
730928c8
RS		 2016 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
2017 shdr->NextCommand = cpu_to_le32(len);
2018}
2019
07d3b2e4
RS		 2020/*
2021 * Passes the query info response back to the caller on success.
2022 * Caller need to free this with free_rsp_buf().
2023 */
f9793b6f 2024int
07d3b2e4
RS		 2025smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
2026 __le16 *utf16_path, u32 desired_access,
2027 u32 class, u32 type, u32 output_len,
f9793b6f
RS		 2028 struct kvec *rsp, int *buftype,
2029 struct cifs_sb_info *cifs_sb)
6fc05c25 2030{
07d3b2e4 2031 struct cifs_ses *ses = tcon->ses;
07d3b2e4 2032 int flags = 0;
730928c8
RS		 2033 struct smb_rqst rqst[3];
2034 int resp_buftype[3];
2035 struct kvec rsp_iov[3];
4d8dfafc 2036 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
730928c8
RS		 2037 struct kvec qi_iov[1];
2038 struct kvec close_iov[1];
6fc05c25 2039 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 2040 struct cifs_open_parms oparms;
2041 struct cifs_fid fid;
730928c8
RS		 2042 int rc;
2043
2044 if (smb3_encryption_required(tcon))
2045 flags |= CIFS_TRANSFORM_REQ;
2046
2047 memset(rqst, 0, sizeof(rqst));
c5a5f38f 2048 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
730928c8
RS		 2049 memset(rsp_iov, 0, sizeof(rsp_iov));
2050
2051 memset(&open_iov, 0, sizeof(open_iov));
2052 rqst[0].rq_iov = open_iov;
4d8dfafc 2053 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
064f6047
PS		 2054
2055 oparms.tcon = tcon;
07d3b2e4 2056 oparms.desired_access = desired_access;
064f6047 2057 oparms.disposition = FILE_OPEN;
f9793b6f
RS		 2058 if (cifs_sb && backup_cred(cifs_sb))
2059 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2060 else
2061 oparms.create_options = 0;
064f6047 2062 oparms.fid = &fid;
9cbc0b73 2063 oparms.reconnect = false;
6fc05c25 2064
07d3b2e4 2065 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
6fc05c25 2066 if (rc)
07d3b2e4 2067 goto qic_exit;
e77fe73c 2068 smb2_set_next_command(tcon, &rqst[0]);
730928c8
RS		 2069
2070 memset(&qi_iov, 0, sizeof(qi_iov));
2071 rqst[1].rq_iov = qi_iov;
2072 rqst[1].rq_nvec = 1;
2073
2074 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
07d3b2e4
RS		 2075 class, type, 0,
2076 output_len, 0,
f5b05d62 2077 NULL);
730928c8 2078 if (rc)
07d3b2e4 2079 goto qic_exit;
e77fe73c 2080 smb2_set_next_command(tcon, &rqst[1]);
730928c8
RS		 2081 smb2_set_related(&rqst[1]);
2082
2083 memset(&close_iov, 0, sizeof(close_iov));
2084 rqst[2].rq_iov = close_iov;
2085 rqst[2].rq_nvec = 1;
2086
2087 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
2088 if (rc)
07d3b2e4 2089 goto qic_exit;
730928c8
RS		 2090 smb2_set_related(&rqst[2]);
2091
2092 rc = compound_send_recv(xid, ses, flags, 3, rqst,
2093 resp_buftype, rsp_iov);
f9793b6f
RS		 2094 if (rc) {
2095 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
07d3b2e4 2096 goto qic_exit;
f9793b6f 2097 }
07d3b2e4
RS		 2098 *rsp = rsp_iov[1];
2099 *buftype = resp_buftype[1];
2100
2101 qic_exit:
2102 SMB2_open_free(&rqst[0]);
2103 SMB2_query_info_free(&rqst[1]);
2104 SMB2_close_free(&rqst[2]);
2105 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2106 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
2107 return rc;
2108}
2109
2110static int
2111smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2112 struct kstatfs *buf)
2113{
2114 struct smb2_query_info_rsp *rsp;
2115 struct smb2_fs_full_size_info *info = NULL;
2116 __le16 utf16_path = 0; /* Null - open root of share */
2117 struct kvec rsp_iov = {NULL, 0};
2118 int buftype = CIFS_NO_BUFFER;
2119 int rc;
2120
2121
2122 rc = smb2_query_info_compound(xid, tcon, &utf16_path,
2123 FILE_READ_ATTRIBUTES,
2124 FS_FULL_SIZE_INFORMATION,
2125 SMB2_O_INFO_FILESYSTEM,
2126 sizeof(struct smb2_fs_full_size_info),
f9793b6f 2127 &rsp_iov, &buftype, NULL);
730928c8
RS		 2128 if (rc)
2129 goto qfs_exit;
2130
07d3b2e4 2131 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
6fc05c25 2132 buf->f_type = SMB2_MAGIC_NUMBER;
730928c8
RS		 2133 info = (struct smb2_fs_full_size_info *)(
2134 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
2135 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
2136 le32_to_cpu(rsp->OutputBufferLength),
07d3b2e4 2137 &rsp_iov,
730928c8
RS		 2138 sizeof(struct smb2_fs_full_size_info));
2139 if (!rc)
2140 smb2_copy_fs_info_to_kstatfs(info, buf);
2141
2142qfs_exit:
07d3b2e4 2143 free_rsp_buf(buftype, rsp_iov.iov_base);
6fc05c25
PS		 2144 return rc;
2145}
2146
2d304217
SF		 2147static int
2148smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2149 struct kstatfs *buf)
2150{
2151 int rc;
2152 __le16 srch_path = 0; /* Null - open root of share */
2153 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2154 struct cifs_open_parms oparms;
2155 struct cifs_fid fid;
2156
2157 if (!tcon->posix_extensions)
2158 return smb2_queryfs(xid, tcon, buf);
2159
2160 oparms.tcon = tcon;
2161 oparms.desired_access = FILE_READ_ATTRIBUTES;
2162 oparms.disposition = FILE_OPEN;
2163 oparms.create_options = 0;
2164 oparms.fid = &fid;
2165 oparms.reconnect = false;
2166
2167 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
2168 if (rc)
2169 return rc;
2170
2171 rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
2172 fid.volatile_fid, buf);
2173 buf->f_type = SMB2_MAGIC_NUMBER;
2174 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2175 return rc;
2176}
2d304217 2177
027e8eec
PS		 2178static bool
2179smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
2180{
2181 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
2182 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
2183}
2184
f7ba7fe6
PS		 2185static int
2186smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
2187 __u64 length, __u32 type, int lock, int unlock, bool wait)
2188{
2189 if (unlock && !lock)
2190 type = SMB2_LOCKFLAG_UNLOCK;
2191 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
2192 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
2193 current->tgid, length, offset, type, wait);
2194}
2195
b8c32dbb
PS		 2196static void
2197smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
2198{
2199 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
2200}
2201
2202static void
2203smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
2204{
2205 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
2206}
2207
2208static void
2209smb2_new_lease_key(struct cifs_fid *fid)
2210{
fa70b87c 2211 generate_random_uuid(fid->lease_key);
b8c32dbb
PS		 2212}
2213
9d49640a
AA		 2214static int
2215smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
2216 const char *search_name,
2217 struct dfs_info3_param **target_nodes,
2218 unsigned int *num_of_nodes,
2219 const struct nls_table *nls_codepage, int remap)
2220{
2221 int rc;
2222 __le16 *utf16_path = NULL;
2223 int utf16_path_len = 0;
2224 struct cifs_tcon *tcon;
2225 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
2226 struct get_dfs_referral_rsp *dfs_rsp = NULL;
2227 u32 dfs_req_size = 0, dfs_rsp_size = 0;
2228
2229 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
2230
2231 /*
63a83b86 2232 * Try to use the IPC tcon, otherwise just use any
9d49640a 2233 */
63a83b86
AA		 2234 tcon = ses->tcon_ipc;
2235 if (tcon == NULL) {
2236 spin_lock(&cifs_tcp_ses_lock);
2237 tcon = list_first_entry_or_null(&ses->tcon_list,
2238 struct cifs_tcon,
2239 tcon_list);
2240 if (tcon)
2241 tcon->tc_count++;
2242 spin_unlock(&cifs_tcp_ses_lock);
2243 }
2244
2245 if (tcon == NULL) {
9d49640a
AA		 2246 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
2247 ses);
2248 rc = -ENOTCONN;
2249 goto out;
2250 }
2251
2252 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
2253 &utf16_path_len,
2254 nls_codepage, remap);
2255 if (!utf16_path) {
2256 rc = -ENOMEM;
2257 goto out;
2258 }
2259
2260 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
2261 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
2262 if (!dfs_req) {
2263 rc = -ENOMEM;
2264 goto out;
2265 }
2266
2267 /* Highest DFS referral version understood */
2268 dfs_req->MaxReferralLevel = DFS_VERSION;
2269
2270 /* Path to resolve in an UTF-16 null-terminated string */
2271 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
2272
2273 do {
9d49640a
AA		 2274 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
2275 FSCTL_DFS_GET_REFERRALS,
63a83b86 2276 true /* is_fsctl */,
9d49640a
AA		 2277 (char *)dfs_req, dfs_req_size,
2278 (char **)&dfs_rsp, &dfs_rsp_size);
9d49640a
AA		 2279 } while (rc == -EAGAIN);
2280
2281 if (rc) {
2564f2ff 2282 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
5702591f 2283 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
9d49640a
AA		 2284 goto out;
2285 }
2286
2287 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
2288 num_of_nodes, target_nodes,
2289 nls_codepage, remap, search_name,
2290 true /* is_unicode */);
2291 if (rc) {
2292 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
2293 goto out;
2294 }
2295
2296 out:
63a83b86
AA		 2297 if (tcon && !tcon->ipc) {
2298 /* ipc tcons are not refcounted */
9d49640a
AA		 2299 spin_lock(&cifs_tcp_ses_lock);
2300 tcon->tc_count--;
2301 spin_unlock(&cifs_tcp_ses_lock);
2302 }
2303 kfree(utf16_path);
2304 kfree(dfs_req);
2305 kfree(dfs_rsp);
2306 return rc;
2307}
7893242e
PS		 2308#define SMB2_SYMLINK_STRUCT_SIZE \
2309 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
2310
b42bf888
PS		 2311static int
2312smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
2313 const char *full_path, char **target_path,
2314 struct cifs_sb_info *cifs_sb)
2315{
2316 int rc;
2317 __le16 *utf16_path;
2318 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2319 struct cifs_open_parms oparms;
2320 struct cifs_fid fid;
91cb74f5 2321 struct kvec err_iov = {NULL, 0};
9d874c36
RS		 2322 struct smb2_err_rsp *err_buf = NULL;
2323 int resp_buftype;
b42bf888 2324 struct smb2_symlink_err_rsp *symlink;
7893242e
PS		 2325 unsigned int sub_len;
2326 unsigned int sub_offset;
2327 unsigned int print_len;
2328 unsigned int print_offset;
b42bf888
PS		 2329
2330 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
2331
2332 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
2333 if (!utf16_path)
2334 return -ENOMEM;
2335
2336 oparms.tcon = tcon;
2337 oparms.desired_access = FILE_READ_ATTRIBUTES;
2338 oparms.disposition = FILE_OPEN;
5e19697b
SF		 2339 if (backup_cred(cifs_sb))
2340 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2341 else
2342 oparms.create_options = 0;
b42bf888
PS		 2343 oparms.fid = &fid;
2344 oparms.reconnect = false;
2345
9d874c36
RS		 2346 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_iov,
2347 &resp_buftype);
0d568cd3 2348 if (!rc || !err_iov.iov_base) {
9d874c36 2349 rc = -ENOENT;
ff361fda 2350 goto free_path;
b42bf888 2351 }
7893242e 2352
91cb74f5 2353 err_buf = err_iov.iov_base;
7893242e 2354 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1fc6ad2f 2355 err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) {
9d874c36
RS		 2356 rc = -ENOENT;
2357 goto querty_exit;
7893242e
PS		 2358 }
2359
b42bf888
PS		 2360 /* open must fail on symlink - reset rc */
2361 rc = 0;
2362 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
2363 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
2364 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
7893242e
PS		 2365 print_len = le16_to_cpu(symlink->PrintNameLength);
2366 print_offset = le16_to_cpu(symlink->PrintNameOffset);
2367
1fc6ad2f 2368 if (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
9d874c36
RS		 2369 rc = -ENOENT;
2370 goto querty_exit;
7893242e
PS		 2371 }
2372
1fc6ad2f
RS		 2373 if (err_iov.iov_len <
2374 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
9d874c36
RS		 2375 rc = -ENOENT;
2376 goto querty_exit;
7893242e
PS		 2377 }
2378
b42bf888
PS		 2379 *target_path = cifs_strndup_from_utf16(
2380 (char *)symlink->PathBuffer + sub_offset,
2381 sub_len, true, cifs_sb->local_nls);
2382 if (!(*target_path)) {
9d874c36
RS		 2383 rc = -ENOMEM;
2384 goto querty_exit;
b42bf888
PS		 2385 }
2386 convert_delimiter(*target_path, '/');
2387 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
9d874c36
RS		 2388
2389 querty_exit:
2390 free_rsp_buf(resp_buftype, err_buf);
ff361fda 2391 free_path:
b42bf888
PS		 2392 kfree(utf16_path);
2393 return rc;
2394}
2395
84908426 2396#ifdef CONFIG_CIFS_ACL
2f1afe25
SP		 2397static struct cifs_ntsd *
2398get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
2399 const struct cifs_fid *cifsfid, u32 *pacllen)
2400{
2401 struct cifs_ntsd *pntsd = NULL;
2402 unsigned int xid;
2403 int rc = -EOPNOTSUPP;
2404 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2405
2406 if (IS_ERR(tlink))
2407 return ERR_CAST(tlink);
2408
2409 xid = get_xid();
2410 cifs_dbg(FYI, "trying to get acl\n");
2411
2412 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
2413 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
2414 free_xid(xid);
2415
2416 cifs_put_tlink(tlink);
2417
2418 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
2419 if (rc)
2420 return ERR_PTR(rc);
2421 return pntsd;
2422
2423}
2424
2425static struct cifs_ntsd *
2426get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
2427 const char *path, u32 *pacllen)
2428{
2429 struct cifs_ntsd *pntsd = NULL;
2430 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2431 unsigned int xid;
2432 int rc;
2433 struct cifs_tcon *tcon;
2434 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2435 struct cifs_fid fid;
2436 struct cifs_open_parms oparms;
2437 __le16 *utf16_path;
2438
2439 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
2440 if (IS_ERR(tlink))
2441 return ERR_CAST(tlink);
2442
2443 tcon = tlink_tcon(tlink);
2444 xid = get_xid();
2445
2446 if (backup_cred(cifs_sb))
709340a0 2447 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2f1afe25
SP		 2448 else
2449 oparms.create_options = 0;
2450
2451 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
cfe89091
SF		 2452 if (!utf16_path) {
2453 rc = -ENOMEM;
2454 free_xid(xid);
2455 return ERR_PTR(rc);
2456 }
2f1afe25
SP		 2457
2458 oparms.tcon = tcon;
2459 oparms.desired_access = READ_CONTROL;
2460 oparms.disposition = FILE_OPEN;
2461 oparms.fid = &fid;
2462 oparms.reconnect = false;
2463
9d874c36 2464 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2f1afe25
SP		 2465 kfree(utf16_path);
2466 if (!rc) {
2467 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
2468 fid.volatile_fid, (void **)&pntsd, pacllen);
2469 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2470 }
2471
2472 cifs_put_tlink(tlink);
2473 free_xid(xid);
2474
2475 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
2476 if (rc)
2477 return ERR_PTR(rc);
2478 return pntsd;
2479}
2480
366ed846
SP		 2481#ifdef CONFIG_CIFS_ACL
2482static int
2483set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
2484 struct inode *inode, const char *path, int aclflag)
2485{
2486 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2487 unsigned int xid;
2488 int rc, access_flags = 0;
2489 struct cifs_tcon *tcon;
2490 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2491 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2492 struct cifs_fid fid;
2493 struct cifs_open_parms oparms;
2494 __le16 *utf16_path;
2495
2496 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
2497 if (IS_ERR(tlink))
2498 return PTR_ERR(tlink);
2499
2500 tcon = tlink_tcon(tlink);
2501 xid = get_xid();
2502
2503 if (backup_cred(cifs_sb))
2504 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2505 else
2506 oparms.create_options = 0;
2507
2508 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
2509 access_flags = WRITE_OWNER;
2510 else
2511 access_flags = WRITE_DAC;
2512
2513 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
cfe89091
SF		 2514 if (!utf16_path) {
2515 rc = -ENOMEM;
2516 free_xid(xid);
2517 return rc;
2518 }
366ed846
SP		 2519
2520 oparms.tcon = tcon;
2521 oparms.desired_access = access_flags;
2522 oparms.disposition = FILE_OPEN;
2523 oparms.path = path;
2524 oparms.fid = &fid;
2525 oparms.reconnect = false;
2526
9d874c36 2527 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
366ed846
SP		 2528 kfree(utf16_path);
2529 if (!rc) {
2530 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
2531 fid.volatile_fid, pnntsd, acllen, aclflag);
2532 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2533 }
2534
2535 cifs_put_tlink(tlink);
2536 free_xid(xid);
2537 return rc;
2538}
2539#endif /* CIFS_ACL */
2540
2f1afe25
SP		 2541/* Retrieve an ACL from the server */
2542static struct cifs_ntsd *
2543get_smb2_acl(struct cifs_sb_info *cifs_sb,
2544 struct inode *inode, const char *path,
2545 u32 *pacllen)
2546{
2547 struct cifs_ntsd *pntsd = NULL;
2548 struct cifsFileInfo *open_file = NULL;
2549
2550 if (inode)
2551 open_file = find_readable_file(CIFS_I(inode), true);
2552 if (!open_file)
2553 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
2554
2555 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
2556 cifsFileInfo_put(open_file);
2557 return pntsd;
2558}
84908426 2559#endif
2f1afe25 2560
30175628
SF		 2561static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
2562 loff_t offset, loff_t len, bool keep_size)
2563{
72c419d9 2564 struct cifs_ses *ses = tcon->ses;
30175628
SF		 2565 struct inode *inode;
2566 struct cifsInodeInfo *cifsi;
2567 struct cifsFileInfo *cfile = file->private_data;
2568 struct file_zero_data_information fsctl_buf;
72c419d9
RS		 2569 struct smb_rqst rqst[2];
2570 int resp_buftype[2];
2571 struct kvec rsp_iov[2];
2572 struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
2573 struct kvec si_iov[1];
2574 unsigned int size[1];
2575 void *data[1];
30175628
SF		 2576 long rc;
2577 unsigned int xid;
72c419d9
RS		 2578 int num = 0, flags = 0;
2579 __le64 eof;
30175628
SF		 2580
2581 xid = get_xid();
2582
2b0143b5 2583 inode = d_inode(cfile->dentry);
30175628
SF		 2584 cifsi = CIFS_I(inode);
2585
779ede04
SF		 2586 trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid,
2587 ses->Suid, offset, len);
2588
2589
30175628
SF		 2590 /* if file not oplocked can't be sure whether asking to extend size */
2591 if (!CIFS_CACHE_READ(cifsi))
cfe89091
SF		 2592 if (keep_size == false) {
2593 rc = -EOPNOTSUPP;
779ede04
SF		 2594 trace_smb3_zero_err(xid, cfile->fid.persistent_fid,
2595 tcon->tid, ses->Suid, offset, len, rc);
cfe89091
SF		 2596 free_xid(xid);
2597 return rc;
2598 }
30175628 2599
2bb93d24 2600 /*
30175628
SF		 2601 * Must check if file sparse since fallocate -z (zero range) assumes
2602 * non-sparse allocation
2603 */
cfe89091
SF		 2604 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
2605 rc = -EOPNOTSUPP;
779ede04
SF		 2606 trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid,
2607 ses->Suid, offset, len, rc);
cfe89091
SF		 2608 free_xid(xid);
2609 return rc;
2610 }
30175628 2611
30175628
SF		 2612 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
2613
2614 fsctl_buf.FileOffset = cpu_to_le64(offset);
2615 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
2616
72c419d9
RS		 2617 if (smb3_encryption_required(tcon))
2618 flags |= CIFS_TRANSFORM_REQ;
2619
2620 memset(rqst, 0, sizeof(rqst));
2621 resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
2622 memset(rsp_iov, 0, sizeof(rsp_iov));
2623
2624
2625 memset(&io_iov, 0, sizeof(io_iov));
2626 rqst[num].rq_iov = io_iov;
2627 rqst[num].rq_nvec = SMB2_IOCTL_IOV_SIZE;
2628 rc = SMB2_ioctl_init(tcon, &rqst[num++], cfile->fid.persistent_fid,
2629 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
2630 true /* is_fctl */, (char *)&fsctl_buf,
2631 sizeof(struct file_zero_data_information));
2632 if (rc)
2633 goto zero_range_exit;
2634
2635 /*
2636 * do we also need to change the size of the file?
2637 */
2638 if (keep_size == false && i_size_read(inode) < offset + len) {
2639 smb2_set_next_command(tcon, &rqst[0]);
2640
2641 memset(&si_iov, 0, sizeof(si_iov));
2642 rqst[num].rq_iov = si_iov;
2643 rqst[num].rq_nvec = 1;
2644
2645 eof = cpu_to_le64(offset + len);
2646 size[0] = 8; /* sizeof __le64 */
2647 data[0] = &eof;
2648
2649 rc = SMB2_set_info_init(tcon, &rqst[num++],
2650 cfile->fid.persistent_fid,
2651 cfile->fid.persistent_fid,
2652 current->tgid,
2653 FILE_END_OF_FILE_INFORMATION,
2654 SMB2_O_INFO_FILE, 0, data, size);
2655 smb2_set_related(&rqst[1]);
2656 }
2657
2658 rc = compound_send_recv(xid, ses, flags, num, rqst,
2659 resp_buftype, rsp_iov);
2660
2661 zero_range_exit:
2662 SMB2_ioctl_free(&rqst[0]);
2663 SMB2_set_info_free(&rqst[1]);
2664 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2665 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
30175628 2666 free_xid(xid);
779ede04
SF		 2667 if (rc)
2668 trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid,
2669 ses->Suid, offset, len, rc);
2670 else
2671 trace_smb3_zero_done(xid, cfile->fid.persistent_fid, tcon->tid,
2672 ses->Suid, offset, len);
30175628
SF		 2673 return rc;
2674}
2675
31742c5a
SF		 2676static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
2677 loff_t offset, loff_t len)
2678{
2679 struct inode *inode;
2680 struct cifsInodeInfo *cifsi;
2681 struct cifsFileInfo *cfile = file->private_data;
2682 struct file_zero_data_information fsctl_buf;
2683 long rc;
2684 unsigned int xid;
2685 __u8 set_sparse = 1;
2686
2687 xid = get_xid();
2688
2b0143b5 2689 inode = d_inode(cfile->dentry);
31742c5a
SF		 2690 cifsi = CIFS_I(inode);
2691
2692 /* Need to make file sparse, if not already, before freeing range. */
2693 /* Consider adding equivalent for compressed since it could also work */
cfe89091
SF		 2694 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
2695 rc = -EOPNOTSUPP;
2696 free_xid(xid);
2697 return rc;
2698 }
31742c5a
SF		 2699
2700 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
2701
2702 fsctl_buf.FileOffset = cpu_to_le64(offset);
2703 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
2704
2705 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2706 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
63a83b86 2707 true /* is_fctl */, (char *)&fsctl_buf,
31742c5a
SF		 2708 sizeof(struct file_zero_data_information), NULL, NULL);
2709 free_xid(xid);
2710 return rc;
2711}
2712
9ccf3216
SF		 2713static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
2714 loff_t off, loff_t len, bool keep_size)
2715{
2716 struct inode *inode;
2717 struct cifsInodeInfo *cifsi;
2718 struct cifsFileInfo *cfile = file->private_data;
2719 long rc = -EOPNOTSUPP;
2720 unsigned int xid;
2721
2722 xid = get_xid();
2723
2b0143b5 2724 inode = d_inode(cfile->dentry);
9ccf3216
SF		 2725 cifsi = CIFS_I(inode);
2726
779ede04
SF		 2727 trace_smb3_falloc_enter(xid, cfile->fid.persistent_fid, tcon->tid,
2728 tcon->ses->Suid, off, len);
9ccf3216
SF		 2729 /* if file not oplocked can't be sure whether asking to extend size */
2730 if (!CIFS_CACHE_READ(cifsi))
cfe89091 2731 if (keep_size == false) {
779ede04
SF		 2732 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
2733 tcon->tid, tcon->ses->Suid, off, len, rc);
cfe89091
SF		 2734 free_xid(xid);
2735 return rc;
2736 }
9ccf3216
SF		 2737
2738 /*
2739 * Files are non-sparse by default so falloc may be a no-op
2740 * Must check if file sparse. If not sparse, and not extending
2741 * then no need to do anything since file already allocated
2742 */
2743 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
2744 if (keep_size == true)
cfe89091 2745 rc = 0;
9ccf3216
SF		 2746 /* check if extending file */
2747 else if (i_size_read(inode) >= off + len)
2748 /* not extending file and already not sparse */
cfe89091 2749 rc = 0;
9ccf3216
SF		 2750 /* BB: in future add else clause to extend file */
2751 else
cfe89091 2752 rc = -EOPNOTSUPP;
779ede04
SF		 2753 if (rc)
2754 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
2755 tcon->tid, tcon->ses->Suid, off, len, rc);
2756 else
2757 trace_smb3_falloc_done(xid, cfile->fid.persistent_fid,
2758 tcon->tid, tcon->ses->Suid, off, len);
cfe89091
SF		 2759 free_xid(xid);
2760 return rc;
9ccf3216
SF		 2761 }
2762
2763 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
2764 /*
2765 * Check if falloc starts within first few pages of file
2766 * and ends within a few pages of the end of file to
2767 * ensure that most of file is being forced to be
2768 * fallocated now. If so then setting whole file sparse
2769 * ie potentially making a few extra pages at the beginning
2770 * or end of the file non-sparse via set_sparse is harmless.
2771 */
cfe89091
SF		 2772 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
2773 rc = -EOPNOTSUPP;
779ede04
SF		 2774 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
2775 tcon->tid, tcon->ses->Suid, off, len, rc);
cfe89091
SF		 2776 free_xid(xid);
2777 return rc;
2778 }
9ccf3216
SF		 2779
2780 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
2781 }
2782 /* BB: else ... in future add code to extend file and set sparse */
2783
779ede04
SF		 2784 if (rc)
2785 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid,
2786 tcon->ses->Suid, off, len, rc);
2787 else
2788 trace_smb3_falloc_done(xid, cfile->fid.persistent_fid, tcon->tid,
2789 tcon->ses->Suid, off, len);
9ccf3216
SF		 2790
2791 free_xid(xid);
2792 return rc;
2793}
2794
2795
31742c5a
SF		 2796static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
2797 loff_t off, loff_t len)
2798{
2799 /* KEEP_SIZE already checked for by do_fallocate */
2800 if (mode & FALLOC_FL_PUNCH_HOLE)
2801 return smb3_punch_hole(file, tcon, off, len);
30175628
SF		 2802 else if (mode & FALLOC_FL_ZERO_RANGE) {
2803 if (mode & FALLOC_FL_KEEP_SIZE)
2804 return smb3_zero_range(file, tcon, off, len, true);
2805 return smb3_zero_range(file, tcon, off, len, false);
9ccf3216
SF		 2806 } else if (mode == FALLOC_FL_KEEP_SIZE)
2807 return smb3_simple_falloc(file, tcon, off, len, true);
2808 else if (mode == 0)
2809 return smb3_simple_falloc(file, tcon, off, len, false);
31742c5a
SF		 2810
2811 return -EOPNOTSUPP;
2812}
2813
c11f1df5
SP		 2814static void
2815smb2_downgrade_oplock(struct TCP_Server_Info *server,
2816 struct cifsInodeInfo *cinode, bool set_level2)
2817{
2818 if (set_level2)
2819 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
2820 0, NULL);
2821 else
2822 server->ops->set_oplock_level(cinode, 0, 0, NULL);
2823}
2824
7b9b9edb
PS		 2825static void
2826smb21_downgrade_oplock(struct TCP_Server_Info *server,
2827 struct cifsInodeInfo *cinode, bool set_level2)
2828{
2829 server->ops->set_oplock_level(cinode,
2830 set_level2 ? SMB2_LEASE_READ_CACHING_HE :
2831 0, 0, NULL);
2832}
2833
53ef1016 2834static void
42873b0a
PS		 2835smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2836 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 2837{
2838 oplock &= 0xFF;
2839 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2840 return;
2841 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
42873b0a 2842 cinode->oplock = CIFS_CACHE_RHW_FLG;
53ef1016
PS		 2843 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
2844 &cinode->vfs_inode);
2845 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
42873b0a 2846 cinode->oplock = CIFS_CACHE_RW_FLG;
53ef1016
PS		 2847 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
2848 &cinode->vfs_inode);
2849 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
2850 cinode->oplock = CIFS_CACHE_READ_FLG;
2851 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
2852 &cinode->vfs_inode);
2853 } else
2854 cinode->oplock = 0;
2855}
2856
2857static void
42873b0a
PS		 2858smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2859 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 2860{
2861 char message[5] = {0};
2862
2863 oplock &= 0xFF;
2864 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2865 return;
2866
2867 cinode->oplock = 0;
2868 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
2869 cinode->oplock |= CIFS_CACHE_READ_FLG;
2870 strcat(message, "R");
2871 }
2872 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
2873 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
2874 strcat(message, "H");
2875 }
2876 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
2877 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
2878 strcat(message, "W");
2879 }
2880 if (!cinode->oplock)
2881 strcat(message, "None");
2882 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
2883 &cinode->vfs_inode);
2884}
2885
42873b0a
PS		 2886static void
2887smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2888 unsigned int epoch, bool *purge_cache)
2889{
2890 unsigned int old_oplock = cinode->oplock;
2891
2892 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
2893
2894 if (purge_cache) {
2895 *purge_cache = false;
2896 if (old_oplock == CIFS_CACHE_READ_FLG) {
2897 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
2898 (epoch - cinode->epoch > 0))
2899 *purge_cache = true;
2900 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2901 (epoch - cinode->epoch > 1))
2902 *purge_cache = true;
2903 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2904 (epoch - cinode->epoch > 1))
2905 *purge_cache = true;
2906 else if (cinode->oplock == 0 &&
2907 (epoch - cinode->epoch > 0))
2908 *purge_cache = true;
2909 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
2910 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2911 (epoch - cinode->epoch > 0))
2912 *purge_cache = true;
2913 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2914 (epoch - cinode->epoch > 1))
2915 *purge_cache = true;
2916 }
2917 cinode->epoch = epoch;
2918 }
2919}
2920
53ef1016
PS		 2921static bool
2922smb2_is_read_op(__u32 oplock)
2923{
2924 return oplock == SMB2_OPLOCK_LEVEL_II;
2925}
2926
2927static bool
2928smb21_is_read_op(__u32 oplock)
2929{
2930 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
2931 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
2932}
2933
f047390a
PS		 2934static __le32
2935map_oplock_to_lease(u8 oplock)
2936{
2937 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
2938 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
2939 else if (oplock == SMB2_OPLOCK_LEVEL_II)
2940 return SMB2_LEASE_READ_CACHING;
2941 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
2942 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
2943 SMB2_LEASE_WRITE_CACHING;
2944 return 0;
2945}
2946
a41a28bd
PS		 2947static char *
2948smb2_create_lease_buf(u8 *lease_key, u8 oplock)
2949{
2950 struct create_lease *buf;
2951
2952 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
2953 if (!buf)
2954 return NULL;
2955
729c0c9d 2956 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
f047390a 2957 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
a41a28bd
PS		 2958
2959 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2960 (struct create_lease, lcontext));
2961 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
2962 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2963 (struct create_lease, Name));
2964 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 2965 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
a41a28bd
PS		 2966 buf->Name[0] = 'R';
2967 buf->Name[1] = 'q';
2968 buf->Name[2] = 'L';
2969 buf->Name[3] = 's';
2970 return (char *)buf;
2971}
2972
f047390a
PS		 2973static char *
2974smb3_create_lease_buf(u8 *lease_key, u8 oplock)
2975{
2976 struct create_lease_v2 *buf;
2977
2978 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
2979 if (!buf)
2980 return NULL;
2981
729c0c9d 2982 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
f047390a
PS		 2983 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2984
2985 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2986 (struct create_lease_v2, lcontext));
2987 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
2988 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2989 (struct create_lease_v2, Name));
2990 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 2991 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
f047390a
PS		 2992 buf->Name[0] = 'R';
2993 buf->Name[1] = 'q';
2994 buf->Name[2] = 'L';
2995 buf->Name[3] = 's';
2996 return (char *)buf;
2997}
2998
b5c7cde3 2999static __u8
96164ab2 3000smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
b5c7cde3
PS		 3001{
3002 struct create_lease *lc = (struct create_lease *)buf;
3003
42873b0a 3004 *epoch = 0; /* not used */
b5c7cde3
PS		 3005 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
3006 return SMB2_OPLOCK_LEVEL_NOCHANGE;
3007 return le32_to_cpu(lc->lcontext.LeaseState);
3008}
3009
f047390a 3010static __u8
96164ab2 3011smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
f047390a
PS		 3012{
3013 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
3014
42873b0a 3015 *epoch = le16_to_cpu(lc->lcontext.Epoch);
f047390a
PS		 3016 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
3017 return SMB2_OPLOCK_LEVEL_NOCHANGE;
96164ab2 3018 if (lease_key)
729c0c9d 3019 memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
f047390a
PS		 3020 return le32_to_cpu(lc->lcontext.LeaseState);
3021}
3022
7f6c5008
PS		 3023static unsigned int
3024smb2_wp_retry_size(struct inode *inode)
3025{
3026 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
3027 SMB2_MAX_BUFFER_SIZE);
3028}
3029
52755808
PS		 3030static bool
3031smb2_dir_needs_close(struct cifsFileInfo *cfile)
3032{
3033 return !cfile->invalidHandle;
3034}
3035
026e93dc 3036static void
977b6170
RS		 3037fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
3038 struct smb_rqst *old_rq)
026e93dc
PS		 3039{
3040 struct smb2_sync_hdr *shdr =
c713c877 3041 (struct smb2_sync_hdr *)old_rq->rq_iov[0].iov_base;
026e93dc
PS		 3042
3043 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
3044 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
3045 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
3046 tr_hdr->Flags = cpu_to_le16(0x01);
3047 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
3048 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
026e93dc
PS		 3049}
3050
262916bc
RS		 3051/* We can not use the normal sg_set_buf() as we will sometimes pass a
3052 * stack object as buf.
3053 */
3054static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
3055 unsigned int buflen)
3056{
3057 sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
3058}
3059
b2c96de7
RS		 3060/* Assumes the first rqst has a transform header as the first iov.
3061 * I.e.
3062 * rqst[0].rq_iov[0] is transform header
3063 * rqst[0].rq_iov[1+] data to be encrypted/decrypted
3064 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
977b6170 3065 */
026e93dc 3066static struct scatterlist *
b2c96de7 3067init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign)
026e93dc 3068{
b2c96de7 3069 unsigned int sg_len;
026e93dc
PS		 3070 struct scatterlist *sg;
3071 unsigned int i;
3072 unsigned int j;
b2c96de7
RS		 3073 unsigned int idx = 0;
3074 int skip;
3075
3076 sg_len = 1;
3077 for (i = 0; i < num_rqst; i++)
3078 sg_len += rqst[i].rq_nvec + rqst[i].rq_npages;
026e93dc
PS		 3079
3080 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
3081 if (!sg)
3082 return NULL;
3083
3084 sg_init_table(sg, sg_len);
b2c96de7
RS		 3085 for (i = 0; i < num_rqst; i++) {
3086 for (j = 0; j < rqst[i].rq_nvec; j++) {
3087 /*
3088 * The first rqst has a transform header where the
3089 * first 20 bytes are not part of the encrypted blob
3090 */
3091 skip = (i == 0) && (j == 0) ? 20 : 0;
3092 smb2_sg_set_buf(&sg[idx++],
3093 rqst[i].rq_iov[j].iov_base + skip,
3094 rqst[i].rq_iov[j].iov_len - skip);
e77fe73c 3095 }
b2c96de7
RS		 3096
3097 for (j = 0; j < rqst[i].rq_npages; j++) {
3098 unsigned int len, offset;
d5f07fb3 3099
b2c96de7
RS		 3100 rqst_page_get_length(&rqst[i], j, &len, &offset);
3101 sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset);
3102 }
026e93dc 3103 }
b2c96de7 3104 smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE);
026e93dc
PS		 3105 return sg;
3106}
3107
61cfac6f
PS		 3108static int
3109smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
3110{
3111 struct cifs_ses *ses;
3112 u8 *ses_enc_key;
3113
3114 spin_lock(&cifs_tcp_ses_lock);
3115 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
3116 if (ses->Suid != ses_id)
3117 continue;
3118 ses_enc_key = enc ? ses->smb3encryptionkey :
3119 ses->smb3decryptionkey;
3120 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
3121 spin_unlock(&cifs_tcp_ses_lock);
3122 return 0;
3123 }
3124 spin_unlock(&cifs_tcp_ses_lock);
3125
3126 return 1;
3127}
026e93dc 3128/*
c713c877
RS		 3129 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
3130 * iov[0] - transform header (associate data),
3131 * iov[1-N] - SMB2 header and pages - data to encrypt.
3132 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
026e93dc
PS		 3133 * untouched.
3134 */
3135static int
b2c96de7
RS		 3136crypt_message(struct TCP_Server_Info *server, int num_rqst,
3137 struct smb_rqst *rqst, int enc)
026e93dc
PS		 3138{
3139 struct smb2_transform_hdr *tr_hdr =
b2c96de7 3140 (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
1fc6ad2f 3141 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
026e93dc
PS		 3142 int rc = 0;
3143 struct scatterlist *sg;
3144 u8 sign[SMB2_SIGNATURE_SIZE] = {};
61cfac6f 3145 u8 key[SMB3_SIGN_KEY_SIZE];
026e93dc
PS		 3146 struct aead_request *req;
3147 char *iv;
3148 unsigned int iv_len;
a5186b85 3149 DECLARE_CRYPTO_WAIT(wait);
026e93dc
PS		 3150 struct crypto_aead *tfm;
3151 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
3152
61cfac6f
PS		 3153 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
3154 if (rc) {
3155 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
3156 enc ? "en" : "de");
026e93dc
PS		 3157 return 0;
3158 }
3159
3160 rc = smb3_crypto_aead_allocate(server);
3161 if (rc) {
3162 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
3163 return rc;
3164 }
3165
3166 tfm = enc ? server->secmech.ccmaesencrypt :
3167 server->secmech.ccmaesdecrypt;
61cfac6f 3168 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
026e93dc
PS		 3169 if (rc) {
3170 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
3171 return rc;
3172 }
3173
3174 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
3175 if (rc) {
3176 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
3177 return rc;
3178 }
3179
3180 req = aead_request_alloc(tfm, GFP_KERNEL);
3181 if (!req) {
3182 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
3183 return -ENOMEM;
3184 }
3185
3186 if (!enc) {
3187 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
3188 crypt_len += SMB2_SIGNATURE_SIZE;
3189 }
3190
b2c96de7 3191 sg = init_sg(num_rqst, rqst, sign);
026e93dc 3192 if (!sg) {
517a6e43
CJ		 3193 cifs_dbg(VFS, "%s: Failed to init sg", __func__);
3194 rc = -ENOMEM;
026e93dc
PS		 3195 goto free_req;
3196 }
3197
3198 iv_len = crypto_aead_ivsize(tfm);
3199 iv = kzalloc(iv_len, GFP_KERNEL);
3200 if (!iv) {
3201 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
517a6e43 3202 rc = -ENOMEM;
026e93dc
PS		 3203 goto free_sg;
3204 }
3205 iv[0] = 3;
3206 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
3207
3208 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
3209 aead_request_set_ad(req, assoc_data_len);
3210
3211 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
a5186b85 3212 crypto_req_done, &wait);
026e93dc 3213
a5186b85
GBY		 3214 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
3215 : crypto_aead_decrypt(req), &wait);
026e93dc
PS		 3216
3217 if (!rc && enc)
3218 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
3219
3220 kfree(iv);
3221free_sg:
3222 kfree(sg);
3223free_req:
3224 kfree(req);
3225 return rc;
3226}
3227
b2c96de7
RS		 3228void
3229smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
3230{
3231 int i, j;
3232
3233 for (i = 0; i < num_rqst; i++) {
3234 if (rqst[i].rq_pages) {
3235 for (j = rqst[i].rq_npages - 1; j >= 0; j--)
3236 put_page(rqst[i].rq_pages[j]);
3237 kfree(rqst[i].rq_pages);
3238 }
3239 }
3240}
3241
3242/*
3243 * This function will initialize new_rq and encrypt the content.
3244 * The first entry, new_rq[0], only contains a single iov which contains
3245 * a smb2_transform_hdr and is pre-allocated by the caller.
3246 * This function then populates new_rq[1+] with the content from olq_rq[0+].
3247 *
3248 * The end result is an array of smb_rqst structures where the first structure
3249 * only contains a single iov for the transform header which we then can pass
3250 * to crypt_message().
3251 *
3252 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
3253 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
3254 */
026e93dc 3255static int
b2c96de7
RS		 3256smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
3257 struct smb_rqst *new_rq, struct smb_rqst *old_rq)
026e93dc 3258{
026e93dc 3259 struct page **pages;
b2c96de7
RS		 3260 struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
3261 unsigned int npages;
3262 unsigned int orig_len = 0;
3263 int i, j;
026e93dc
PS		 3264 int rc = -ENOMEM;
3265
b2c96de7
RS		 3266 for (i = 1; i < num_rqst; i++) {
3267 npages = old_rq[i - 1].rq_npages;
3268 pages = kmalloc_array(npages, sizeof(struct page *),
3269 GFP_KERNEL);
3270 if (!pages)
3271 goto err_free;
3272
3273 new_rq[i].rq_pages = pages;
3274 new_rq[i].rq_npages = npages;
3275 new_rq[i].rq_offset = old_rq[i - 1].rq_offset;
3276 new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz;
3277 new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz;
3278 new_rq[i].rq_iov = old_rq[i - 1].rq_iov;
3279 new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec;
3280
3281 orig_len += smb_rqst_len(server, &old_rq[i - 1]);
3282
3283 for (j = 0; j < npages; j++) {
3284 pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
3285 if (!pages[j])
3286 goto err_free;
3287 }
026e93dc 3288
b2c96de7
RS		 3289 /* copy pages form the old */
3290 for (j = 0; j < npages; j++) {
3291 char *dst, *src;
3292 unsigned int offset, len;
977b6170 3293
b2c96de7 3294 rqst_page_get_length(&new_rq[i], j, &len, &offset);
026e93dc 3295
b2c96de7
RS		 3296 dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset;
3297 src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset;
026e93dc 3298
b2c96de7
RS		 3299 memcpy(dst, src, len);
3300 kunmap(new_rq[i].rq_pages[j]);
3301 kunmap(old_rq[i - 1].rq_pages[j]);
3302 }
3303 }
35e2cc1b 3304
b2c96de7 3305 /* fill the 1st iov with a transform header */
977b6170 3306 fill_transform_hdr(tr_hdr, orig_len, old_rq);
d5f07fb3 3307
b2c96de7 3308 rc = crypt_message(server, num_rqst, new_rq, 1);
026e93dc
PS		 3309 cifs_dbg(FYI, "encrypt message returned %d", rc);
3310 if (rc)
b2c96de7 3311 goto err_free;
026e93dc
PS		 3312
3313 return rc;
3314
b2c96de7
RS		 3315err_free:
3316 smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
026e93dc
PS		 3317 return rc;
3318}
3319
4326ed2f
PS		 3320static int
3321smb3_is_transform_hdr(void *buf)
3322{
3323 struct smb2_transform_hdr *trhdr = buf;
3324
3325 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
3326}
3327
3328static int
3329decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
3330 unsigned int buf_data_size, struct page **pages,
3331 unsigned int npages, unsigned int page_data_size)
3332{
c713c877 3333 struct kvec iov[2];
4326ed2f 3334 struct smb_rqst rqst = {NULL};
4326ed2f
PS		 3335 int rc;
3336
c713c877
RS		 3337 iov[0].iov_base = buf;
3338 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
3339 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
3340 iov[1].iov_len = buf_data_size;
4326ed2f
PS		 3341
3342 rqst.rq_iov = iov;
c713c877 3343 rqst.rq_nvec = 2;
4326ed2f
PS		 3344 rqst.rq_pages = pages;
3345 rqst.rq_npages = npages;
3346 rqst.rq_pagesz = PAGE_SIZE;
3347 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
3348
b2c96de7 3349 rc = crypt_message(server, 1, &rqst, 0);
4326ed2f
PS		 3350 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
3351
3352 if (rc)
3353 return rc;
3354
c713c877 3355 memmove(buf, iov[1].iov_base, buf_data_size);
977b6170
RS		 3356
3357 server->total_read = buf_data_size + page_data_size;
4326ed2f
PS		 3358
3359 return rc;
3360}
3361
c42a6abe
PS		 3362static int
3363read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
3364 unsigned int npages, unsigned int len)
3365{
3366 int i;
3367 int length;
3368
3369 for (i = 0; i < npages; i++) {
3370 struct page *page = pages[i];
3371 size_t n;
3372
3373 n = len;
3374 if (len >= PAGE_SIZE) {
3375 /* enough data to fill the page */
3376 n = PAGE_SIZE;
3377 len -= n;
3378 } else {
3379 zero_user(page, len, PAGE_SIZE - len);
3380 len = 0;
3381 }
1dbe3466 3382 length = cifs_read_page_from_socket(server, page, 0, n);
c42a6abe
PS		 3383 if (length < 0)
3384 return length;
3385 server->total_read += length;
3386 }
3387
3388 return 0;
3389}
3390
3391static int
3392init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
3393 unsigned int cur_off, struct bio_vec **page_vec)
3394{
3395 struct bio_vec *bvec;
3396 int i;
3397
3398 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
3399 if (!bvec)
3400 return -ENOMEM;
3401
3402 for (i = 0; i < npages; i++) {
3403 bvec[i].bv_page = pages[i];
3404 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
3405 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
3406 data_size -= bvec[i].bv_len;
3407 }
3408
3409 if (data_size != 0) {
3410 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
3411 kfree(bvec);
3412 return -EIO;
3413 }
3414
3415 *page_vec = bvec;
3416 return 0;
3417}
3418
4326ed2f
PS		 3419static int
3420handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
3421 char *buf, unsigned int buf_len, struct page **pages,
3422 unsigned int npages, unsigned int page_data_size)
3423{
3424 unsigned int data_offset;
3425 unsigned int data_len;
c42a6abe
PS		 3426 unsigned int cur_off;
3427 unsigned int cur_page_idx;
3428 unsigned int pad_len;
4326ed2f 3429 struct cifs_readdata *rdata = mid->callback_data;
49f466bd 3430 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
4326ed2f
PS		 3431 struct bio_vec *bvec = NULL;
3432 struct iov_iter iter;
3433 struct kvec iov;
3434 int length;
74dcf418 3435 bool use_rdma_mr = false;
4326ed2f
PS		 3436
3437 if (shdr->Command != SMB2_READ) {
3438 cifs_dbg(VFS, "only big read responses are supported\n");
3439 return -ENOTSUPP;
3440 }
3441
511c54a2
PS		 3442 if (server->ops->is_session_expired &&
3443 server->ops->is_session_expired(buf)) {
3444 cifs_reconnect(server);
3445 wake_up(&server->response_q);
3446 return -1;
3447 }
3448
4326ed2f 3449 if (server->ops->is_status_pending &&
66265f13 3450 server->ops->is_status_pending(buf, server))
4326ed2f
PS		 3451 return -1;
3452
ec678eae
PS		 3453 /* set up first two iov to get credits */
3454 rdata->iov[0].iov_base = buf;
bb1bccb6
PS		 3455 rdata->iov[0].iov_len = 0;
3456 rdata->iov[1].iov_base = buf;
ec678eae 3457 rdata->iov[1].iov_len =
bb1bccb6 3458 min_t(unsigned int, buf_len, server->vals->read_rsp_size);
ec678eae
PS		 3459 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
3460 rdata->iov[0].iov_base, rdata->iov[0].iov_len);
3461 cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
3462 rdata->iov[1].iov_base, rdata->iov[1].iov_len);
3463
3464 rdata->result = server->ops->map_error(buf, true);
4326ed2f
PS		 3465 if (rdata->result != 0) {
3466 cifs_dbg(FYI, "%s: server returned error %d\n",
3467 __func__, rdata->result);
ec678eae
PS		 3468 /* normal error on read response */
3469 dequeue_mid(mid, false);
4326ed2f
PS		 3470 return 0;
3471 }
3472
1fc6ad2f 3473 data_offset = server->ops->read_data_offset(buf);
74dcf418
LL		 3474#ifdef CONFIG_CIFS_SMB_DIRECT
3475 use_rdma_mr = rdata->mr;
3476#endif
3477 data_len = server->ops->read_data_length(buf, use_rdma_mr);
4326ed2f
PS		 3478
3479 if (data_offset < server->vals->read_rsp_size) {
3480 /*
3481 * win2k8 sometimes sends an offset of 0 when the read
3482 * is beyond the EOF. Treat it as if the data starts just after
3483 * the header.
3484 */
3485 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
3486 __func__, data_offset);
3487 data_offset = server->vals->read_rsp_size;
3488 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
3489 /* data_offset is beyond the end of smallbuf */
3490 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
3491 __func__, data_offset);
3492 rdata->result = -EIO;
3493 dequeue_mid(mid, rdata->result);
3494 return 0;
3495 }
3496
c42a6abe
PS		 3497 pad_len = data_offset - server->vals->read_rsp_size;
3498
4326ed2f
PS		 3499 if (buf_len <= data_offset) {
3500 /* read response payload is in pages */
c42a6abe
PS		 3501 cur_page_idx = pad_len / PAGE_SIZE;
3502 cur_off = pad_len % PAGE_SIZE;
3503
3504 if (cur_page_idx != 0) {
3505 /* data offset is beyond the 1st page of response */
3506 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
3507 __func__, data_offset);
3508 rdata->result = -EIO;
3509 dequeue_mid(mid, rdata->result);
3510 return 0;
3511 }
3512
3513 if (data_len > page_data_size - pad_len) {
3514 /* data_len is corrupt -- discard frame */
3515 rdata->result = -EIO;
3516 dequeue_mid(mid, rdata->result);
3517 return 0;
3518 }
3519
3520 rdata->result = init_read_bvec(pages, npages, page_data_size,
3521 cur_off, &bvec);
3522 if (rdata->result != 0) {
3523 dequeue_mid(mid, rdata->result);
3524 return 0;
3525 }
3526
aa563d7b 3527 iov_iter_bvec(&iter, WRITE, bvec, npages, data_len);
4326ed2f
PS		 3528 } else if (buf_len >= data_offset + data_len) {
3529 /* read response payload is in buf */
3530 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
3531 iov.iov_base = buf + data_offset;
3532 iov.iov_len = data_len;
aa563d7b 3533 iov_iter_kvec(&iter, WRITE, &iov, 1, data_len);
4326ed2f
PS		 3534 } else {
3535 /* read response payload cannot be in both buf and pages */
3536 WARN_ONCE(1, "buf can not contain only a part of read data");
3537 rdata->result = -EIO;
3538 dequeue_mid(mid, rdata->result);
3539 return 0;
3540 }
3541
4326ed2f
PS		 3542 length = rdata->copy_into_pages(server, rdata, &iter);
3543
3544 kfree(bvec);
3545
3546 if (length < 0)
3547 return length;
3548
3549 dequeue_mid(mid, false);
3550 return length;
3551}
3552
c42a6abe
PS		 3553static int
3554receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
3555{
3556 char *buf = server->smallbuf;
3557 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
3558 unsigned int npages;
3559 struct page **pages;
3560 unsigned int len;
1fc6ad2f 3561 unsigned int buflen = server->pdu_size;
c42a6abe
PS		 3562 int rc;
3563 int i = 0;
3564
1fc6ad2f 3565 len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
c42a6abe
PS		 3566 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
3567
3568 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
3569 if (rc < 0)
3570 return rc;
3571 server->total_read += rc;
3572
1fc6ad2f 3573 len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
93012bf9 3574 server->vals->read_rsp_size;
c42a6abe
PS		 3575 npages = DIV_ROUND_UP(len, PAGE_SIZE);
3576
3577 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
3578 if (!pages) {
3579 rc = -ENOMEM;
3580 goto discard_data;
3581 }
3582
3583 for (; i < npages; i++) {
3584 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
3585 if (!pages[i]) {
3586 rc = -ENOMEM;
3587 goto discard_data;
3588 }
3589 }
3590
3591 /* read read data into pages */
3592 rc = read_data_into_pages(server, pages, npages, len);
3593 if (rc)
3594 goto free_pages;
3595
350be257 3596 rc = cifs_discard_remaining_data(server);
c42a6abe
PS		 3597 if (rc)
3598 goto free_pages;
3599
1fc6ad2f 3600 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
c42a6abe
PS		 3601 pages, npages, len);
3602 if (rc)
3603 goto free_pages;
3604
3605 *mid = smb2_find_mid(server, buf);
3606 if (*mid == NULL)
3607 cifs_dbg(FYI, "mid not found\n");
3608 else {
3609 cifs_dbg(FYI, "mid found\n");
3610 (*mid)->decrypted = true;
3611 rc = handle_read_data(server, *mid, buf,
3612 server->vals->read_rsp_size,
3613 pages, npages, len);
3614 }
3615
3616free_pages:
3617 for (i = i - 1; i >= 0; i--)
3618 put_page(pages[i]);
3619 kfree(pages);
3620 return rc;
3621discard_data:
350be257 3622 cifs_discard_remaining_data(server);
c42a6abe
PS		 3623 goto free_pages;
3624}
3625
4326ed2f
PS		 3626static int
3627receive_encrypted_standard(struct TCP_Server_Info *server,
b24df3e3
RS		 3628 struct mid_q_entry **mids, char **bufs,
3629 int *num_mids)
4326ed2f 3630{
b24df3e3 3631 int ret, length;
4326ed2f 3632 char *buf = server->smallbuf;
b24df3e3
RS		 3633 char *tmpbuf;
3634 struct smb2_sync_hdr *shdr;
2e96467d 3635 unsigned int pdu_length = server->pdu_size;
4326ed2f
PS		 3636 unsigned int buf_size;
3637 struct mid_q_entry *mid_entry;
b24df3e3
RS		 3638 int next_is_large;
3639 char *next_buffer = NULL;
3640
3641 *num_mids = 0;
4326ed2f
PS		 3642
3643 /* switch to large buffer if too big for a small one */
1fc6ad2f 3644 if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
4326ed2f
PS		 3645 server->large_buf = true;
3646 memcpy(server->bigbuf, buf, server->total_read);
3647 buf = server->bigbuf;
3648 }
3649
3650 /* now read the rest */
3651 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
1fc6ad2f 3652 pdu_length - HEADER_SIZE(server) + 1);
4326ed2f
PS		 3653 if (length < 0)
3654 return length;
3655 server->total_read += length;
3656
1fc6ad2f 3657 buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
4326ed2f
PS		 3658 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
3659 if (length)
3660 return length;
3661
b24df3e3
RS		 3662 next_is_large = server->large_buf;
3663 one_more:
3664 shdr = (struct smb2_sync_hdr *)buf;
3665 if (shdr->NextCommand) {
3666 if (next_is_large) {
3667 tmpbuf = server->bigbuf;
3668 next_buffer = (char *)cifs_buf_get();
3669 } else {
3670 tmpbuf = server->smallbuf;
3671 next_buffer = (char *)cifs_small_buf_get();
3672 }
3673 memcpy(next_buffer,
3674 tmpbuf + le32_to_cpu(shdr->NextCommand),
3675 pdu_length - le32_to_cpu(shdr->NextCommand));
3676 }
3677
4326ed2f
PS		 3678 mid_entry = smb2_find_mid(server, buf);
3679 if (mid_entry == NULL)
3680 cifs_dbg(FYI, "mid not found\n");
3681 else {
3682 cifs_dbg(FYI, "mid found\n");
3683 mid_entry->decrypted = true;
b24df3e3 3684 mid_entry->resp_buf_size = server->pdu_size;
4326ed2f
PS		 3685 }
3686
b24df3e3
RS		 3687 if (*num_mids >= MAX_COMPOUND) {
3688 cifs_dbg(VFS, "too many PDUs in compound\n");
3689 return -1;
3690 }
3691 bufs[*num_mids] = buf;
3692 mids[(*num_mids)++] = mid_entry;
4326ed2f
PS		 3693
3694 if (mid_entry && mid_entry->handle)
b24df3e3
RS		 3695 ret = mid_entry->handle(server, mid_entry);
3696 else
3697 ret = cifs_handle_standard(server, mid_entry);
3698
3699 if (ret == 0 && shdr->NextCommand) {
3700 pdu_length -= le32_to_cpu(shdr->NextCommand);
3701 server->large_buf = next_is_large;
3702 if (next_is_large)
3703 server->bigbuf = next_buffer;
3704 else
3705 server->smallbuf = next_buffer;
3706
3707 buf += le32_to_cpu(shdr->NextCommand);
3708 goto one_more;
3709 }
4326ed2f 3710
b24df3e3 3711 return ret;
4326ed2f
PS		 3712}
3713
3714static int
b24df3e3
RS		 3715smb3_receive_transform(struct TCP_Server_Info *server,
3716 struct mid_q_entry **mids, char **bufs, int *num_mids)
4326ed2f
PS		 3717{
3718 char *buf = server->smallbuf;
2e96467d 3719 unsigned int pdu_length = server->pdu_size;
4326ed2f
PS		 3720 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
3721 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
3722
1fc6ad2f 3723 if (pdu_length < sizeof(struct smb2_transform_hdr) +
4326ed2f
PS		 3724 sizeof(struct smb2_sync_hdr)) {
3725 cifs_dbg(VFS, "Transform message is too small (%u)\n",
3726 pdu_length);
3727 cifs_reconnect(server);
3728 wake_up(&server->response_q);
3729 return -ECONNABORTED;
3730 }
3731
1fc6ad2f 3732 if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
4326ed2f
PS		 3733 cifs_dbg(VFS, "Transform message is broken\n");
3734 cifs_reconnect(server);
3735 wake_up(&server->response_q);
3736 return -ECONNABORTED;
3737 }
3738
b24df3e3 3739 /* TODO: add support for compounds containing READ. */
6d2f84ee
PA		 3740 if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) {
3741 *num_mids = 1;
b24df3e3 3742 return receive_encrypted_read(server, &mids[0]);
6d2f84ee 3743 }
4326ed2f 3744
b24df3e3 3745 return receive_encrypted_standard(server, mids, bufs, num_mids);
4326ed2f
PS		 3746}
3747
3748int
3749smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
3750{
3751 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
3752
1fc6ad2f 3753 return handle_read_data(server, mid, buf, server->pdu_size,
4326ed2f
PS		 3754 NULL, 0, 0);
3755}
3756
8ce79ec3
RS		 3757static int
3758smb2_next_header(char *buf)
3759{
3760 struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf;
3761 struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
3762
3763 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM)
3764 return sizeof(struct smb2_transform_hdr) +
3765 le32_to_cpu(t_hdr->OriginalMessageSize);
3766
3767 return le32_to_cpu(hdr->NextCommand);
3768}
3769
53ef1016 3770struct smb_version_operations smb20_operations = {
027e8eec 3771 .compare_fids = smb2_compare_fids,
2dc7e1c0 3772 .setup_request = smb2_setup_request,
c95b8eed 3773 .setup_async_request = smb2_setup_async_request,
2dc7e1c0 3774 .check_receive = smb2_check_receive,
28ea5290
PS		 3775 .add_credits = smb2_add_credits,
3776 .set_credits = smb2_set_credits,
3777 .get_credits_field = smb2_get_credits_field,
3778 .get_credits = smb2_get_credits,
cb7e9eab 3779 .wait_mtu_credits = cifs_wait_mtu_credits,
2dc7e1c0 3780 .get_next_mid = smb2_get_next_mid,
c781af7e 3781 .revert_current_mid = smb2_revert_current_mid,
09a4707e
PS		 3782 .read_data_offset = smb2_read_data_offset,
3783 .read_data_length = smb2_read_data_length,
3784 .map_error = map_smb2_to_linux_error,
093b2bda
PS		 3785 .find_mid = smb2_find_mid,
3786 .check_message = smb2_check_message,
3787 .dump_detail = smb2_dump_detail,
d60622eb
PS		 3788 .clear_stats = smb2_clear_stats,
3789 .print_stats = smb2_print_stats,
983c88a4 3790 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3791 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 3792 .downgrade_oplock = smb2_downgrade_oplock,
ec2e4523
PS		 3793 .need_neg = smb2_need_neg,
3794 .negotiate = smb2_negotiate,
3a3bab50
PS		 3795 .negotiate_wsize = smb2_negotiate_wsize,
3796 .negotiate_rsize = smb2_negotiate_rsize,
5478f9ba
PS		 3797 .sess_setup = SMB2_sess_setup,
3798 .logoff = SMB2_logoff,
faaf946a
PS		 3799 .tree_connect = SMB2_tcon,
3800 .tree_disconnect = SMB2_tdis,
34f62640 3801 .qfs_tcon = smb2_qfs_tcon,
2503a0db 3802 .is_path_accessible = smb2_is_path_accessible,
9094fad1
PS		 3803 .can_echo = smb2_can_echo,
3804 .echo = SMB2_echo,
be4cb9e3
PS		 3805 .query_path_info = smb2_query_path_info,
3806 .get_srv_inum = smb2_get_srv_inum,
b7546bc5 3807 .query_file_info = smb2_query_file_info,
c839ff24
PS		 3808 .set_path_size = smb2_set_path_size,
3809 .set_file_size = smb2_set_file_size,
1feeaac7 3810 .set_file_info = smb2_set_file_info,
64a5cfa6 3811 .set_compression = smb2_set_compression,
a0e73183
PS		 3812 .mkdir = smb2_mkdir,
3813 .mkdir_setinfo = smb2_mkdir_setinfo,
1a500f01 3814 .rmdir = smb2_rmdir,
cbe6f439 3815 .unlink = smb2_unlink,
35143eb5 3816 .rename = smb2_rename_path,
568798cc 3817 .create_hardlink = smb2_create_hardlink,
b42bf888 3818 .query_symlink = smb2_query_symlink,
5b23c97d
SP		 3819 .query_mf_symlink = smb3_query_mf_symlink,
3820 .create_mf_symlink = smb3_create_mf_symlink,
f0df737e
PS		 3821 .open = smb2_open_file,
3822 .set_fid = smb2_set_fid,
3823 .close = smb2_close_file,
7a5cfb19 3824 .flush = smb2_flush_file,
09a4707e 3825 .async_readv = smb2_async_readv,
33319141 3826 .async_writev = smb2_async_writev,
d8e05039 3827 .sync_read = smb2_sync_read,
009d3443 3828 .sync_write = smb2_sync_write,
d324f08d
PS		 3829 .query_dir_first = smb2_query_dir_first,
3830 .query_dir_next = smb2_query_dir_next,
3831 .close_dir = smb2_close_dir,
3832 .calc_smb_size = smb2_calc_size,
2e44b288 3833 .is_status_pending = smb2_is_status_pending,
511c54a2 3834 .is_session_expired = smb2_is_session_expired,
983c88a4 3835 .oplock_response = smb2_oplock_response,
6fc05c25 3836 .queryfs = smb2_queryfs,
f7ba7fe6
PS		 3837 .mand_lock = smb2_mand_lock,
3838 .mand_unlock_range = smb2_unlock_range,
b140799a 3839 .push_mand_locks = smb2_push_mandatory_locks,
b8c32dbb
PS		 3840 .get_lease_key = smb2_get_lease_key,
3841 .set_lease_key = smb2_set_lease_key,
3842 .new_lease_key = smb2_new_lease_key,
38107d45 3843 .calc_signature = smb2_calc_signature,
53ef1016
PS		 3844 .is_read_op = smb2_is_read_op,
3845 .set_oplock_level = smb2_set_oplock_level,
a41a28bd 3846 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 3847 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 3848 .copychunk_range = smb2_copychunk_range,
7f6c5008 3849 .wp_retry_size = smb2_wp_retry_size,
52755808 3850 .dir_needs_close = smb2_dir_needs_close,
9d49640a 3851 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3852 .select_sectype = smb2_select_sectype,
95907fea
RS		 3853#ifdef CONFIG_CIFS_XATTR
3854 .query_all_EAs = smb2_query_eas,
5517554e 3855 .set_EA = smb2_set_ea,
95907fea 3856#endif /* CIFS_XATTR */
2f1afe25
SP		 3857#ifdef CONFIG_CIFS_ACL
3858 .get_acl = get_smb2_acl,
3859 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 3860 .set_acl = set_smb2_acl,
2f1afe25 3861#endif /* CIFS_ACL */
8ce79ec3 3862 .next_header = smb2_next_header,
f5b05d62 3863 .ioctl_query_info = smb2_ioctl_query_info,
38107d45
SF		 3864};
3865
53ef1016
PS		 3866struct smb_version_operations smb21_operations = {
3867 .compare_fids = smb2_compare_fids,
3868 .setup_request = smb2_setup_request,
3869 .setup_async_request = smb2_setup_async_request,
3870 .check_receive = smb2_check_receive,
3871 .add_credits = smb2_add_credits,
3872 .set_credits = smb2_set_credits,
3873 .get_credits_field = smb2_get_credits_field,
3874 .get_credits = smb2_get_credits,
cb7e9eab 3875 .wait_mtu_credits = smb2_wait_mtu_credits,
9a1c67e8 3876 .adjust_credits = smb2_adjust_credits,
53ef1016 3877 .get_next_mid = smb2_get_next_mid,
c781af7e 3878 .revert_current_mid = smb2_revert_current_mid,
53ef1016
PS		 3879 .read_data_offset = smb2_read_data_offset,
3880 .read_data_length = smb2_read_data_length,
3881 .map_error = map_smb2_to_linux_error,
3882 .find_mid = smb2_find_mid,
3883 .check_message = smb2_check_message,
3884 .dump_detail = smb2_dump_detail,
3885 .clear_stats = smb2_clear_stats,
3886 .print_stats = smb2_print_stats,
3887 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3888 .handle_cancelled_mid = smb2_handle_cancelled_mid,
7b9b9edb 3889 .downgrade_oplock = smb21_downgrade_oplock,
53ef1016
PS		 3890 .need_neg = smb2_need_neg,
3891 .negotiate = smb2_negotiate,
3892 .negotiate_wsize = smb2_negotiate_wsize,
3893 .negotiate_rsize = smb2_negotiate_rsize,
3894 .sess_setup = SMB2_sess_setup,
3895 .logoff = SMB2_logoff,
3896 .tree_connect = SMB2_tcon,
3897 .tree_disconnect = SMB2_tdis,
34f62640 3898 .qfs_tcon = smb2_qfs_tcon,
53ef1016
PS		 3899 .is_path_accessible = smb2_is_path_accessible,
3900 .can_echo = smb2_can_echo,
3901 .echo = SMB2_echo,
3902 .query_path_info = smb2_query_path_info,
3903 .get_srv_inum = smb2_get_srv_inum,
3904 .query_file_info = smb2_query_file_info,
3905 .set_path_size = smb2_set_path_size,
3906 .set_file_size = smb2_set_file_size,
3907 .set_file_info = smb2_set_file_info,
64a5cfa6 3908 .set_compression = smb2_set_compression,
53ef1016
PS		 3909 .mkdir = smb2_mkdir,
3910 .mkdir_setinfo = smb2_mkdir_setinfo,
3911 .rmdir = smb2_rmdir,
3912 .unlink = smb2_unlink,
3913 .rename = smb2_rename_path,
3914 .create_hardlink = smb2_create_hardlink,
3915 .query_symlink = smb2_query_symlink,
c22870ea 3916 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 3917 .create_mf_symlink = smb3_create_mf_symlink,
53ef1016
PS		 3918 .open = smb2_open_file,
3919 .set_fid = smb2_set_fid,
3920 .close = smb2_close_file,
3921 .flush = smb2_flush_file,
3922 .async_readv = smb2_async_readv,
3923 .async_writev = smb2_async_writev,
3924 .sync_read = smb2_sync_read,
3925 .sync_write = smb2_sync_write,
3926 .query_dir_first = smb2_query_dir_first,
3927 .query_dir_next = smb2_query_dir_next,
3928 .close_dir = smb2_close_dir,
3929 .calc_smb_size = smb2_calc_size,
3930 .is_status_pending = smb2_is_status_pending,
511c54a2 3931 .is_session_expired = smb2_is_session_expired,
53ef1016
PS		 3932 .oplock_response = smb2_oplock_response,
3933 .queryfs = smb2_queryfs,
3934 .mand_lock = smb2_mand_lock,
3935 .mand_unlock_range = smb2_unlock_range,
3936 .push_mand_locks = smb2_push_mandatory_locks,
3937 .get_lease_key = smb2_get_lease_key,
3938 .set_lease_key = smb2_set_lease_key,
3939 .new_lease_key = smb2_new_lease_key,
3940 .calc_signature = smb2_calc_signature,
3941 .is_read_op = smb21_is_read_op,
3942 .set_oplock_level = smb21_set_oplock_level,
a41a28bd 3943 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 3944 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 3945 .copychunk_range = smb2_copychunk_range,
7f6c5008 3946 .wp_retry_size = smb2_wp_retry_size,
52755808 3947 .dir_needs_close = smb2_dir_needs_close,
834170c8 3948 .enum_snapshots = smb3_enum_snapshots,
9d49640a 3949 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3950 .select_sectype = smb2_select_sectype,
95907fea
RS		 3951#ifdef CONFIG_CIFS_XATTR
3952 .query_all_EAs = smb2_query_eas,
5517554e 3953 .set_EA = smb2_set_ea,
95907fea 3954#endif /* CIFS_XATTR */
2f1afe25
SP		 3955#ifdef CONFIG_CIFS_ACL
3956 .get_acl = get_smb2_acl,
3957 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 3958 .set_acl = set_smb2_acl,
2f1afe25 3959#endif /* CIFS_ACL */
8ce79ec3 3960 .next_header = smb2_next_header,
f5b05d62 3961 .ioctl_query_info = smb2_ioctl_query_info,
53ef1016 3962};
38107d45
SF		 3963
3964struct smb_version_operations smb30_operations = {
3965 .compare_fids = smb2_compare_fids,
3966 .setup_request = smb2_setup_request,
3967 .setup_async_request = smb2_setup_async_request,
3968 .check_receive = smb2_check_receive,
3969 .add_credits = smb2_add_credits,
3970 .set_credits = smb2_set_credits,
3971 .get_credits_field = smb2_get_credits_field,
3972 .get_credits = smb2_get_credits,
cb7e9eab 3973 .wait_mtu_credits = smb2_wait_mtu_credits,
9a1c67e8 3974 .adjust_credits = smb2_adjust_credits,
38107d45 3975 .get_next_mid = smb2_get_next_mid,
c781af7e 3976 .revert_current_mid = smb2_revert_current_mid,
38107d45
SF		 3977 .read_data_offset = smb2_read_data_offset,
3978 .read_data_length = smb2_read_data_length,
3979 .map_error = map_smb2_to_linux_error,
3980 .find_mid = smb2_find_mid,
3981 .check_message = smb2_check_message,
3982 .dump_detail = smb2_dump_detail,
3983 .clear_stats = smb2_clear_stats,
3984 .print_stats = smb2_print_stats,
769ee6a4 3985 .dump_share_caps = smb2_dump_share_caps,
38107d45 3986 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3987 .handle_cancelled_mid = smb2_handle_cancelled_mid,
7b9b9edb 3988 .downgrade_oplock = smb21_downgrade_oplock,
38107d45
SF		 3989 .need_neg = smb2_need_neg,
3990 .negotiate = smb2_negotiate,
3d621230
SF		 3991 .negotiate_wsize = smb3_negotiate_wsize,
3992 .negotiate_rsize = smb3_negotiate_rsize,
38107d45
SF		 3993 .sess_setup = SMB2_sess_setup,
3994 .logoff = SMB2_logoff,
3995 .tree_connect = SMB2_tcon,
3996 .tree_disconnect = SMB2_tdis,
af6a12ea 3997 .qfs_tcon = smb3_qfs_tcon,
38107d45
SF		 3998 .is_path_accessible = smb2_is_path_accessible,
3999 .can_echo = smb2_can_echo,
4000 .echo = SMB2_echo,
4001 .query_path_info = smb2_query_path_info,
4002 .get_srv_inum = smb2_get_srv_inum,
4003 .query_file_info = smb2_query_file_info,
4004 .set_path_size = smb2_set_path_size,
4005 .set_file_size = smb2_set_file_size,
4006 .set_file_info = smb2_set_file_info,
64a5cfa6 4007 .set_compression = smb2_set_compression,
38107d45
SF		 4008 .mkdir = smb2_mkdir,
4009 .mkdir_setinfo = smb2_mkdir_setinfo,
4010 .rmdir = smb2_rmdir,
4011 .unlink = smb2_unlink,
4012 .rename = smb2_rename_path,
4013 .create_hardlink = smb2_create_hardlink,
b42bf888 4014 .query_symlink = smb2_query_symlink,
c22870ea 4015 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 4016 .create_mf_symlink = smb3_create_mf_symlink,
38107d45
SF		 4017 .open = smb2_open_file,
4018 .set_fid = smb2_set_fid,
4019 .close = smb2_close_file,
4020 .flush = smb2_flush_file,
4021 .async_readv = smb2_async_readv,
4022 .async_writev = smb2_async_writev,
4023 .sync_read = smb2_sync_read,
4024 .sync_write = smb2_sync_write,
4025 .query_dir_first = smb2_query_dir_first,
4026 .query_dir_next = smb2_query_dir_next,
4027 .close_dir = smb2_close_dir,
4028 .calc_smb_size = smb2_calc_size,
4029 .is_status_pending = smb2_is_status_pending,
511c54a2 4030 .is_session_expired = smb2_is_session_expired,
38107d45
SF		 4031 .oplock_response = smb2_oplock_response,
4032 .queryfs = smb2_queryfs,
4033 .mand_lock = smb2_mand_lock,
4034 .mand_unlock_range = smb2_unlock_range,
4035 .push_mand_locks = smb2_push_mandatory_locks,
4036 .get_lease_key = smb2_get_lease_key,
4037 .set_lease_key = smb2_set_lease_key,
4038 .new_lease_key = smb2_new_lease_key,
373512ec 4039 .generate_signingkey = generate_smb30signingkey,
38107d45 4040 .calc_signature = smb3_calc_signature,
b3152e2c 4041 .set_integrity = smb3_set_integrity,
53ef1016 4042 .is_read_op = smb21_is_read_op,
42873b0a 4043 .set_oplock_level = smb3_set_oplock_level,
f047390a
PS		 4044 .create_lease_buf = smb3_create_lease_buf,
4045 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 4046 .copychunk_range = smb2_copychunk_range,
ca9e7a1c 4047 .duplicate_extents = smb2_duplicate_extents,
ff1c038a 4048 .validate_negotiate = smb3_validate_negotiate,
7f6c5008 4049 .wp_retry_size = smb2_wp_retry_size,
52755808 4050 .dir_needs_close = smb2_dir_needs_close,
31742c5a 4051 .fallocate = smb3_fallocate,
834170c8 4052 .enum_snapshots = smb3_enum_snapshots,
026e93dc 4053 .init_transform_rq = smb3_init_transform_rq,
4326ed2f
PS		 4054 .is_transform_hdr = smb3_is_transform_hdr,
4055 .receive_transform = smb3_receive_transform,
9d49640a 4056 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 4057 .select_sectype = smb2_select_sectype,
95907fea
RS		 4058#ifdef CONFIG_CIFS_XATTR
4059 .query_all_EAs = smb2_query_eas,
5517554e 4060 .set_EA = smb2_set_ea,
95907fea 4061#endif /* CIFS_XATTR */
2f1afe25
SP		 4062#ifdef CONFIG_CIFS_ACL
4063 .get_acl = get_smb2_acl,
4064 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 4065 .set_acl = set_smb2_acl,
2f1afe25 4066#endif /* CIFS_ACL */
8ce79ec3 4067 .next_header = smb2_next_header,
f5b05d62 4068 .ioctl_query_info = smb2_ioctl_query_info,
1080ef75
SF		 4069};
4070
aab1893d
SF		 4071struct smb_version_operations smb311_operations = {
4072 .compare_fids = smb2_compare_fids,
4073 .setup_request = smb2_setup_request,
4074 .setup_async_request = smb2_setup_async_request,
4075 .check_receive = smb2_check_receive,
4076 .add_credits = smb2_add_credits,
4077 .set_credits = smb2_set_credits,
4078 .get_credits_field = smb2_get_credits_field,
4079 .get_credits = smb2_get_credits,
4080 .wait_mtu_credits = smb2_wait_mtu_credits,
9a1c67e8 4081 .adjust_credits = smb2_adjust_credits,
aab1893d 4082 .get_next_mid = smb2_get_next_mid,
c781af7e 4083 .revert_current_mid = smb2_revert_current_mid,
aab1893d
SF		 4084 .read_data_offset = smb2_read_data_offset,
4085 .read_data_length = smb2_read_data_length,
4086 .map_error = map_smb2_to_linux_error,
4087 .find_mid = smb2_find_mid,
4088 .check_message = smb2_check_message,
4089 .dump_detail = smb2_dump_detail,
4090 .clear_stats = smb2_clear_stats,
4091 .print_stats = smb2_print_stats,
4092 .dump_share_caps = smb2_dump_share_caps,
4093 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 4094 .handle_cancelled_mid = smb2_handle_cancelled_mid,
7b9b9edb 4095 .downgrade_oplock = smb21_downgrade_oplock,
aab1893d
SF		 4096 .need_neg = smb2_need_neg,
4097 .negotiate = smb2_negotiate,
3d621230
SF		 4098 .negotiate_wsize = smb3_negotiate_wsize,
4099 .negotiate_rsize = smb3_negotiate_rsize,
aab1893d
SF		 4100 .sess_setup = SMB2_sess_setup,
4101 .logoff = SMB2_logoff,
4102 .tree_connect = SMB2_tcon,
4103 .tree_disconnect = SMB2_tdis,
4104 .qfs_tcon = smb3_qfs_tcon,
4105 .is_path_accessible = smb2_is_path_accessible,
4106 .can_echo = smb2_can_echo,
4107 .echo = SMB2_echo,
4108 .query_path_info = smb2_query_path_info,
4109 .get_srv_inum = smb2_get_srv_inum,
4110 .query_file_info = smb2_query_file_info,
4111 .set_path_size = smb2_set_path_size,
4112 .set_file_size = smb2_set_file_size,
4113 .set_file_info = smb2_set_file_info,
4114 .set_compression = smb2_set_compression,
4115 .mkdir = smb2_mkdir,
4116 .mkdir_setinfo = smb2_mkdir_setinfo,
bea851b8 4117 .posix_mkdir = smb311_posix_mkdir,
aab1893d
SF		 4118 .rmdir = smb2_rmdir,
4119 .unlink = smb2_unlink,
4120 .rename = smb2_rename_path,
4121 .create_hardlink = smb2_create_hardlink,
4122 .query_symlink = smb2_query_symlink,
4123 .query_mf_symlink = smb3_query_mf_symlink,
4124 .create_mf_symlink = smb3_create_mf_symlink,
4125 .open = smb2_open_file,
4126 .set_fid = smb2_set_fid,
4127 .close = smb2_close_file,
4128 .flush = smb2_flush_file,
4129 .async_readv = smb2_async_readv,
4130 .async_writev = smb2_async_writev,
4131 .sync_read = smb2_sync_read,
4132 .sync_write = smb2_sync_write,
4133 .query_dir_first = smb2_query_dir_first,
4134 .query_dir_next = smb2_query_dir_next,
4135 .close_dir = smb2_close_dir,
4136 .calc_smb_size = smb2_calc_size,
4137 .is_status_pending = smb2_is_status_pending,
511c54a2 4138 .is_session_expired = smb2_is_session_expired,
aab1893d 4139 .oplock_response = smb2_oplock_response,
2d304217 4140 .queryfs = smb311_queryfs,
aab1893d
SF		 4141 .mand_lock = smb2_mand_lock,
4142 .mand_unlock_range = smb2_unlock_range,
4143 .push_mand_locks = smb2_push_mandatory_locks,
4144 .get_lease_key = smb2_get_lease_key,
4145 .set_lease_key = smb2_set_lease_key,
4146 .new_lease_key = smb2_new_lease_key,
373512ec 4147 .generate_signingkey = generate_smb311signingkey,
aab1893d 4148 .calc_signature = smb3_calc_signature,
b3152e2c 4149 .set_integrity = smb3_set_integrity,
aab1893d
SF		 4150 .is_read_op = smb21_is_read_op,
4151 .set_oplock_level = smb3_set_oplock_level,
4152 .create_lease_buf = smb3_create_lease_buf,
4153 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 4154 .copychunk_range = smb2_copychunk_range,
02b16665 4155 .duplicate_extents = smb2_duplicate_extents,
aab1893d
SF		 4156/* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
4157 .wp_retry_size = smb2_wp_retry_size,
4158 .dir_needs_close = smb2_dir_needs_close,
4159 .fallocate = smb3_fallocate,
834170c8 4160 .enum_snapshots = smb3_enum_snapshots,
026e93dc 4161 .init_transform_rq = smb3_init_transform_rq,
4326ed2f
PS		 4162 .is_transform_hdr = smb3_is_transform_hdr,
4163 .receive_transform = smb3_receive_transform,
9d49640a 4164 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 4165 .select_sectype = smb2_select_sectype,
95907fea
RS		 4166#ifdef CONFIG_CIFS_XATTR
4167 .query_all_EAs = smb2_query_eas,
5517554e 4168 .set_EA = smb2_set_ea,
95907fea 4169#endif /* CIFS_XATTR */
c1777df1
RS		 4170#ifdef CONFIG_CIFS_ACL
4171 .get_acl = get_smb2_acl,
4172 .get_acl_by_fid = get_smb2_acl_by_fid,
4173 .set_acl = set_smb2_acl,
4174#endif /* CIFS_ACL */
8ce79ec3 4175 .next_header = smb2_next_header,
f5b05d62 4176 .ioctl_query_info = smb2_ioctl_query_info,
aab1893d 4177};
aab1893d 4178
dd446b16
SF		 4179struct smb_version_values smb20_values = {
4180 .version_string = SMB20_VERSION_STRING,
4181 .protocol_id = SMB20_PROT_ID,
4182 .req_capabilities = 0, /* MBZ */
4183 .large_lock_type = 0,
4184 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4185 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4186 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 4187 .header_size = sizeof(struct smb2_sync_hdr),
4188 .header_preamble_size = 0,
dd446b16
SF		 4189 .max_header_size = MAX_SMB2_HDR_SIZE,
4190 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4191 .lock_cmd = SMB2_LOCK,
4192 .cap_unix = 0,
4193 .cap_nt_find = SMB2_NT_FIND,
4194 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 4195 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4196 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 4197 .create_lease_size = sizeof(struct create_lease),
dd446b16
SF		 4198};
4199
1080ef75
SF		 4200struct smb_version_values smb21_values = {
4201 .version_string = SMB21_VERSION_STRING,
e4aa25e7
SF		 4202 .protocol_id = SMB21_PROT_ID,
4203 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
4204 .large_lock_type = 0,
4205 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4206 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4207 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 4208 .header_size = sizeof(struct smb2_sync_hdr),
4209 .header_preamble_size = 0,
e4aa25e7
SF		 4210 .max_header_size = MAX_SMB2_HDR_SIZE,
4211 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4212 .lock_cmd = SMB2_LOCK,
4213 .cap_unix = 0,
4214 .cap_nt_find = SMB2_NT_FIND,
4215 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 4216 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4217 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 4218 .create_lease_size = sizeof(struct create_lease),
e4aa25e7
SF		 4219};
4220
9764c02f
SF		 4221struct smb_version_values smb3any_values = {
4222 .version_string = SMB3ANY_VERSION_STRING,
4223 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
f8015683 4224 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
9764c02f
SF		 4225 .large_lock_type = 0,
4226 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4227 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4228 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 4229 .header_size = sizeof(struct smb2_sync_hdr),
4230 .header_preamble_size = 0,
9764c02f
SF		 4231 .max_header_size = MAX_SMB2_HDR_SIZE,
4232 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4233 .lock_cmd = SMB2_LOCK,
4234 .cap_unix = 0,
4235 .cap_nt_find = SMB2_NT_FIND,
4236 .cap_large_files = SMB2_LARGE_FILES,
4237 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4238 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
4239 .create_lease_size = sizeof(struct create_lease_v2),
4240};
4241
4242struct smb_version_values smbdefault_values = {
4243 .version_string = SMBDEFAULT_VERSION_STRING,
4244 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
f8015683 4245 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
9764c02f
SF		 4246 .large_lock_type = 0,
4247 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4248 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4249 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 4250 .header_size = sizeof(struct smb2_sync_hdr),
4251 .header_preamble_size = 0,
9764c02f
SF		 4252 .max_header_size = MAX_SMB2_HDR_SIZE,
4253 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4254 .lock_cmd = SMB2_LOCK,
4255 .cap_unix = 0,
4256 .cap_nt_find = SMB2_NT_FIND,
4257 .cap_large_files = SMB2_LARGE_FILES,
4258 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4259 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
4260 .create_lease_size = sizeof(struct create_lease_v2),
4261};
4262
e4aa25e7
SF		 4263struct smb_version_values smb30_values = {
4264 .version_string = SMB30_VERSION_STRING,
4265 .protocol_id = SMB30_PROT_ID,
f8015683 4266 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
027e8eec
PS		 4267 .large_lock_type = 0,
4268 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4269 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4270 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 4271 .header_size = sizeof(struct smb2_sync_hdr),
4272 .header_preamble_size = 0,
093b2bda 4273 .max_header_size = MAX_SMB2_HDR_SIZE,
09a4707e 4274 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2dc7e1c0 4275 .lock_cmd = SMB2_LOCK,
29e20f9c
PS		 4276 .cap_unix = 0,
4277 .cap_nt_find = SMB2_NT_FIND,
4278 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 4279 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4280 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 4281 .create_lease_size = sizeof(struct create_lease_v2),
1080ef75 4282};
20b6d8b4
SF		 4283
4284struct smb_version_values smb302_values = {
4285 .version_string = SMB302_VERSION_STRING,
4286 .protocol_id = SMB302_PROT_ID,
f8015683 4287 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
20b6d8b4
SF		 4288 .large_lock_type = 0,
4289 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4290 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4291 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 4292 .header_size = sizeof(struct smb2_sync_hdr),
4293 .header_preamble_size = 0,
20b6d8b4
SF		 4294 .max_header_size = MAX_SMB2_HDR_SIZE,
4295 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4296 .lock_cmd = SMB2_LOCK,
4297 .cap_unix = 0,
4298 .cap_nt_find = SMB2_NT_FIND,
4299 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 4300 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4301 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 4302 .create_lease_size = sizeof(struct create_lease_v2),
20b6d8b4 4303};
5f7fbf73 4304
5f7fbf73
SF		 4305struct smb_version_values smb311_values = {
4306 .version_string = SMB311_VERSION_STRING,
4307 .protocol_id = SMB311_PROT_ID,
f8015683 4308 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
5f7fbf73
SF		 4309 .large_lock_type = 0,
4310 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4311 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4312 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 4313 .header_size = sizeof(struct smb2_sync_hdr),
4314 .header_preamble_size = 0,
5f7fbf73
SF		 4315 .max_header_size = MAX_SMB2_HDR_SIZE,
4316 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4317 .lock_cmd = SMB2_LOCK,
4318 .cap_unix = 0,
4319 .cap_nt_find = SMB2_NT_FIND,
4320 .cap_large_files = SMB2_LARGE_FILES,
4321 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4322 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
4323 .create_lease_size = sizeof(struct create_lease_v2),
4324};
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