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smb3: enumerating snapshots was leaving part of the data off end
[linux-2.6-block.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
PS		 36
37static int
38change_conf(struct TCP_Server_Info *server)
39{
40 server->credits += server->echo_credits + server->oplock_credits;
41 server->oplock_credits = server->echo_credits = 0;
42 switch (server->credits) {
43 case 0:
44 return -1;
45 case 1:
46 server->echoes = false;
47 server->oplocks = false;
f96637be 48 cifs_dbg(VFS, "disabling echoes and oplocks\n");
28ea5290
PS		 49 break;
50 case 2:
51 server->echoes = true;
52 server->oplocks = false;
53 server->echo_credits = 1;
f96637be 54 cifs_dbg(FYI, "disabling oplocks\n");
28ea5290
PS		 55 break;
56 default:
57 server->echoes = true;
e0ddde9d
SF		 58 if (enable_oplocks) {
59 server->oplocks = true;
60 server->oplock_credits = 1;
61 } else
62 server->oplocks = false;
63
28ea5290 64 server->echo_credits = 1;
28ea5290
PS		 65 }
66 server->credits -= server->echo_credits + server->oplock_credits;
67 return 0;
68}
69
70static void
71smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
72 const int optype)
73{
74 int *val, rc = 0;
75 spin_lock(&server->req_lock);
76 val = server->ops->get_credits_field(server, optype);
77 *val += add;
141891f4
SF		 78 if (*val > 65000) {
79 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
80 printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
81 }
28ea5290 82 server->in_flight--;
ec2e4523 83 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
28ea5290 84 rc = change_conf(server);
983c88a4
PS		 85 /*
86 * Sometimes server returns 0 credits on oplock break ack - we need to
87 * rebalance credits in this case.
88 */
89 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
90 server->oplocks) {
91 if (server->credits > 1) {
92 server->credits--;
93 server->oplock_credits++;
94 }
95 }
28ea5290
PS		 96 spin_unlock(&server->req_lock);
97 wake_up(&server->request_q);
98 if (rc)
99 cifs_reconnect(server);
100}
101
102static void
103smb2_set_credits(struct TCP_Server_Info *server, const int val)
104{
105 spin_lock(&server->req_lock);
106 server->credits = val;
107 spin_unlock(&server->req_lock);
108}
109
110static int *
111smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
112{
113 switch (optype) {
114 case CIFS_ECHO_OP:
115 return &server->echo_credits;
116 case CIFS_OBREAK_OP:
117 return &server->oplock_credits;
118 default:
119 return &server->credits;
120 }
121}
122
123static unsigned int
124smb2_get_credits(struct mid_q_entry *mid)
125{
49f466bd 126 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)mid->resp_buf;
31473fc4
PS		 127
128 return le16_to_cpu(shdr->CreditRequest);
28ea5290 129}
2dc7e1c0 130
cb7e9eab
PS		 131static int
132smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
133 unsigned int *num, unsigned int *credits)
134{
135 int rc = 0;
136 unsigned int scredits;
137
138 spin_lock(&server->req_lock);
139 while (1) {
140 if (server->credits <= 0) {
141 spin_unlock(&server->req_lock);
142 cifs_num_waiters_inc(server);
143 rc = wait_event_killable(server->request_q,
144 has_credits(server, &server->credits));
145 cifs_num_waiters_dec(server);
146 if (rc)
147 return rc;
148 spin_lock(&server->req_lock);
149 } else {
150 if (server->tcpStatus == CifsExiting) {
151 spin_unlock(&server->req_lock);
152 return -ENOENT;
153 }
154
155 scredits = server->credits;
156 /* can deadlock with reopen */
157 if (scredits == 1) {
158 *num = SMB2_MAX_BUFFER_SIZE;
159 *credits = 0;
160 break;
161 }
162
163 /* leave one credit for a possible reopen */
164 scredits--;
165 *num = min_t(unsigned int, size,
166 scredits * SMB2_MAX_BUFFER_SIZE);
167
168 *credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
169 server->credits -= *credits;
170 server->in_flight++;
171 break;
172 }
173 }
174 spin_unlock(&server->req_lock);
175 return rc;
176}
177
2dc7e1c0
PS		 178static __u64
179smb2_get_next_mid(struct TCP_Server_Info *server)
180{
181 __u64 mid;
182 /* for SMB2 we need the current value */
183 spin_lock(&GlobalMid_Lock);
184 mid = server->CurrentMid++;
185 spin_unlock(&GlobalMid_Lock);
186 return mid;
187}
1080ef75 188
093b2bda
PS		 189static struct mid_q_entry *
190smb2_find_mid(struct TCP_Server_Info *server, char *buf)
191{
192 struct mid_q_entry *mid;
49f466bd 193 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
31473fc4 194 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
093b2bda 195
31473fc4 196 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
373512ec
SF		 197 cifs_dbg(VFS, "encrypted frame parsing not supported yet");
198 return NULL;
199 }
200
093b2bda
PS		 201 spin_lock(&GlobalMid_Lock);
202 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
9235d098 203 if ((mid->mid == wire_mid) &&
093b2bda 204 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
31473fc4 205 (mid->command == shdr->Command)) {
696e420b 206 kref_get(&mid->refcount);
093b2bda
PS		 207 spin_unlock(&GlobalMid_Lock);
208 return mid;
209 }
210 }
211 spin_unlock(&GlobalMid_Lock);
212 return NULL;
213}
214
215static void
14547f7d 216smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
093b2bda
PS		 217{
218#ifdef CONFIG_CIFS_DEBUG2
49f466bd 219 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
093b2bda 220
f96637be 221 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
31473fc4
PS		 222 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
223 shdr->ProcessId);
14547f7d 224 cifs_dbg(VFS, "smb buf %p len %u\n", buf,
71992e62 225 server->ops->calc_smb_size(buf, server));
093b2bda
PS		 226#endif
227}
228
ec2e4523
PS		 229static bool
230smb2_need_neg(struct TCP_Server_Info *server)
231{
232 return server->max_read == 0;
233}
234
235static int
236smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
237{
238 int rc;
239 ses->server->CurrentMid = 0;
240 rc = SMB2_negotiate(xid, ses);
241 /* BB we probably don't need to retry with modern servers */
242 if (rc == -EAGAIN)
243 rc = -EHOSTDOWN;
244 return rc;
245}
246
3a3bab50
PS		 247static unsigned int
248smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
249{
250 struct TCP_Server_Info *server = tcon->ses->server;
251 unsigned int wsize;
252
253 /* start with specified wsize, or default */
254 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
255 wsize = min_t(unsigned int, wsize, server->max_write);
09902f8d 256#ifdef CONFIG_CIFS_SMB_DIRECT
bb4c0419
LL		 257 if (server->rdma) {
258 if (server->sign)
259 wsize = min_t(unsigned int,
260 wsize, server->smbd_conn->max_fragmented_send_size);
261 else
262 wsize = min_t(unsigned int,
09902f8d 263 wsize, server->smbd_conn->max_readwrite_size);
bb4c0419 264 }
09902f8d 265#endif
cb7e9eab
PS		 266 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
267 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 268
3a3bab50
PS		 269 return wsize;
270}
271
272static unsigned int
273smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
274{
275 struct TCP_Server_Info *server = tcon->ses->server;
276 unsigned int rsize;
277
278 /* start with specified rsize, or default */
279 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
280 rsize = min_t(unsigned int, rsize, server->max_read);
09902f8d 281#ifdef CONFIG_CIFS_SMB_DIRECT
bb4c0419
LL		 282 if (server->rdma) {
283 if (server->sign)
284 rsize = min_t(unsigned int,
285 rsize, server->smbd_conn->max_fragmented_recv_size);
286 else
287 rsize = min_t(unsigned int,
09902f8d 288 rsize, server->smbd_conn->max_readwrite_size);
bb4c0419 289 }
09902f8d 290#endif
bed9da02
PS		 291
292 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
293 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 294
3a3bab50
PS		 295 return rsize;
296}
297
fe856be4
AA		 298
299static int
300parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
301 size_t buf_len,
302 struct cifs_server_iface **iface_list,
303 size_t *iface_count)
304{
305 struct network_interface_info_ioctl_rsp *p;
306 struct sockaddr_in *addr4;
307 struct sockaddr_in6 *addr6;
308 struct iface_info_ipv4 *p4;
309 struct iface_info_ipv6 *p6;
310 struct cifs_server_iface *info;
311 ssize_t bytes_left;
312 size_t next = 0;
313 int nb_iface = 0;
314 int rc = 0;
315
316 *iface_list = NULL;
317 *iface_count = 0;
318
319 /*
320 * Fist pass: count and sanity check
321 */
322
323 bytes_left = buf_len;
324 p = buf;
325 while (bytes_left >= sizeof(*p)) {
326 nb_iface++;
327 next = le32_to_cpu(p->Next);
328 if (!next) {
329 bytes_left -= sizeof(*p);
330 break;
331 }
332 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
333 bytes_left -= next;
334 }
335
336 if (!nb_iface) {
337 cifs_dbg(VFS, "%s: malformed interface info\n", __func__);
338 rc = -EINVAL;
339 goto out;
340 }
341
342 if (bytes_left || p->Next)
343 cifs_dbg(VFS, "%s: incomplete interface info\n", __func__);
344
345
346 /*
347 * Second pass: extract info to internal structure
348 */
349
350 *iface_list = kcalloc(nb_iface, sizeof(**iface_list), GFP_KERNEL);
351 if (!*iface_list) {
352 rc = -ENOMEM;
353 goto out;
354 }
355
356 info = *iface_list;
357 bytes_left = buf_len;
358 p = buf;
359 while (bytes_left >= sizeof(*p)) {
360 info->speed = le64_to_cpu(p->LinkSpeed);
361 info->rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE);
362 info->rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE);
363
364 cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, *iface_count);
365 cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed);
366 cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__,
367 le32_to_cpu(p->Capability));
368
369 switch (p->Family) {
370 /*
371 * The kernel and wire socket structures have the same
372 * layout and use network byte order but make the
373 * conversion explicit in case either one changes.
374 */
375 case INTERNETWORK:
376 addr4 = (struct sockaddr_in *)&info->sockaddr;
377 p4 = (struct iface_info_ipv4 *)p->Buffer;
378 addr4->sin_family = AF_INET;
379 memcpy(&addr4->sin_addr, &p4->IPv4Address, 4);
380
381 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
382 addr4->sin_port = cpu_to_be16(CIFS_PORT);
383
384 cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__,
385 &addr4->sin_addr);
386 break;
387 case INTERNETWORKV6:
388 addr6 = (struct sockaddr_in6 *)&info->sockaddr;
389 p6 = (struct iface_info_ipv6 *)p->Buffer;
390 addr6->sin6_family = AF_INET6;
391 memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16);
392
393 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
394 addr6->sin6_flowinfo = 0;
395 addr6->sin6_scope_id = 0;
396 addr6->sin6_port = cpu_to_be16(CIFS_PORT);
397
398 cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__,
399 &addr6->sin6_addr);
400 break;
401 default:
402 cifs_dbg(VFS,
403 "%s: skipping unsupported socket family\n",
404 __func__);
405 goto next_iface;
406 }
407
408 (*iface_count)++;
409 info++;
410next_iface:
411 next = le32_to_cpu(p->Next);
412 if (!next)
413 break;
414 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
415 bytes_left -= next;
416 }
417
418 if (!*iface_count) {
419 rc = -EINVAL;
420 goto out;
421 }
422
423out:
424 if (rc) {
425 kfree(*iface_list);
426 *iface_count = 0;
427 *iface_list = NULL;
428 }
429 return rc;
430}
431
432
c481e9fe
SF		 433static int
434SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
435{
436 int rc;
437 unsigned int ret_data_len = 0;
fe856be4
AA		 438 struct network_interface_info_ioctl_rsp *out_buf = NULL;
439 struct cifs_server_iface *iface_list;
440 size_t iface_count;
441 struct cifs_ses *ses = tcon->ses;
c481e9fe
SF		 442
443 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
444 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
445 NULL /* no data input */, 0 /* no data input */,
446 (char **)&out_buf, &ret_data_len);
c3ed4402
SF		 447 if (rc == -EOPNOTSUPP) {
448 cifs_dbg(FYI,
449 "server does not support query network interfaces\n");
450 goto out;
451 } else if (rc != 0) {
9ffc5412 452 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
fe856be4 453 goto out;
9ffc5412 454 }
fe856be4
AA		 455
456 rc = parse_server_interfaces(out_buf, ret_data_len,
457 &iface_list, &iface_count);
458 if (rc)
459 goto out;
460
461 spin_lock(&ses->iface_lock);
462 kfree(ses->iface_list);
463 ses->iface_list = iface_list;
464 ses->iface_count = iface_count;
465 ses->iface_last_update = jiffies;
466 spin_unlock(&ses->iface_lock);
467
468out:
24df1483 469 kfree(out_buf);
c481e9fe
SF		 470 return rc;
471}
c481e9fe 472
9da6ec77
RS		 473static void
474smb2_close_cached_fid(struct kref *ref)
a93864d9 475{
9da6ec77
RS		 476 struct cached_fid *cfid = container_of(ref, struct cached_fid,
477 refcount);
478
a93864d9
RS		 479 if (cfid->is_valid) {
480 cifs_dbg(FYI, "clear cached root file handle\n");
481 SMB2_close(0, cfid->tcon, cfid->fid->persistent_fid,
482 cfid->fid->volatile_fid);
483 cfid->is_valid = false;
484 }
9da6ec77
RS		 485}
486
487void close_shroot(struct cached_fid *cfid)
488{
489 mutex_lock(&cfid->fid_mutex);
490 kref_put(&cfid->refcount, smb2_close_cached_fid);
a93864d9
RS		 491 mutex_unlock(&cfid->fid_mutex);
492}
493
9da6ec77
RS		 494void
495smb2_cached_lease_break(struct work_struct *work)
496{
497 struct cached_fid *cfid = container_of(work,
498 struct cached_fid, lease_break);
499
500 close_shroot(cfid);
501}
502
3d4ef9a1
SF		 503/*
504 * Open the directory at the root of a share
505 */
506int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
507{
508 struct cifs_open_parms oparams;
509 int rc;
510 __le16 srch_path = 0; /* Null - since an open of top of share */
a93864d9 511 u8 oplock = SMB2_OPLOCK_LEVEL_II;
3d4ef9a1 512
a93864d9
RS		 513 mutex_lock(&tcon->crfid.fid_mutex);
514 if (tcon->crfid.is_valid) {
3d4ef9a1 515 cifs_dbg(FYI, "found a cached root file handle\n");
a93864d9 516 memcpy(pfid, tcon->crfid.fid, sizeof(struct cifs_fid));
9da6ec77 517 kref_get(&tcon->crfid.refcount);
a93864d9 518 mutex_unlock(&tcon->crfid.fid_mutex);
3d4ef9a1
SF		 519 return 0;
520 }
521
522 oparams.tcon = tcon;
523 oparams.create_options = 0;
524 oparams.desired_access = FILE_READ_ATTRIBUTES;
525 oparams.disposition = FILE_OPEN;
526 oparams.fid = pfid;
527 oparams.reconnect = false;
528
9d874c36 529 rc = SMB2_open(xid, &oparams, &srch_path, &oplock, NULL, NULL, NULL);
3d4ef9a1 530 if (rc == 0) {
a93864d9
RS		 531 memcpy(tcon->crfid.fid, pfid, sizeof(struct cifs_fid));
532 tcon->crfid.tcon = tcon;
533 tcon->crfid.is_valid = true;
9da6ec77
RS		 534 kref_init(&tcon->crfid.refcount);
535 kref_get(&tcon->crfid.refcount);
3d4ef9a1 536 }
a93864d9 537 mutex_unlock(&tcon->crfid.fid_mutex);
3d4ef9a1
SF		 538 return rc;
539}
540
af6a12ea
SF		 541static void
542smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
543{
544 int rc;
545 __le16 srch_path = 0; /* Null - open root of share */
546 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
547 struct cifs_open_parms oparms;
548 struct cifs_fid fid;
3d4ef9a1 549 bool no_cached_open = tcon->nohandlecache;
af6a12ea
SF		 550
551 oparms.tcon = tcon;
552 oparms.desired_access = FILE_READ_ATTRIBUTES;
553 oparms.disposition = FILE_OPEN;
554 oparms.create_options = 0;
555 oparms.fid = &fid;
556 oparms.reconnect = false;
557
3d4ef9a1 558 if (no_cached_open)
9d874c36
RS		 559 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
560 NULL);
3d4ef9a1
SF		 561 else
562 rc = open_shroot(xid, tcon, &fid);
563
af6a12ea
SF		 564 if (rc)
565 return;
566
c481e9fe 567 SMB3_request_interfaces(xid, tcon);
c481e9fe 568
af6a12ea
SF		 569 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
570 FS_ATTRIBUTE_INFORMATION);
571 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
572 FS_DEVICE_INFORMATION);
21ba3845
SF		 573 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
574 FS_VOLUME_INFORMATION);
af6a12ea
SF		 575 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
576 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
3d4ef9a1
SF		 577 if (no_cached_open)
578 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
9da6ec77
RS		 579 else
580 close_shroot(&tcon->crfid);
581
af6a12ea
SF		 582 return;
583}
584
34f62640
SF		 585static void
586smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
587{
588 int rc;
589 __le16 srch_path = 0; /* Null - open root of share */
590 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
591 struct cifs_open_parms oparms;
592 struct cifs_fid fid;
593
594 oparms.tcon = tcon;
595 oparms.desired_access = FILE_READ_ATTRIBUTES;
596 oparms.disposition = FILE_OPEN;
597 oparms.create_options = 0;
598 oparms.fid = &fid;
599 oparms.reconnect = false;
600
9d874c36 601 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
34f62640
SF		 602 if (rc)
603 return;
604
2167114c
SF		 605 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
606 FS_ATTRIBUTE_INFORMATION);
607 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
608 FS_DEVICE_INFORMATION);
34f62640
SF		 609 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
610 return;
611}
612
2503a0db
PS		 613static int
614smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
615 struct cifs_sb_info *cifs_sb, const char *full_path)
616{
617 int rc;
2503a0db 618 __le16 *utf16_path;
2e44b288 619 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 620 struct cifs_open_parms oparms;
621 struct cifs_fid fid;
2503a0db 622
a93864d9 623 if ((*full_path == 0) && tcon->crfid.is_valid)
3d4ef9a1
SF		 624 return 0;
625
2503a0db
PS		 626 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
627 if (!utf16_path)
628 return -ENOMEM;
629
064f6047
PS		 630 oparms.tcon = tcon;
631 oparms.desired_access = FILE_READ_ATTRIBUTES;
632 oparms.disposition = FILE_OPEN;
633 oparms.create_options = 0;
634 oparms.fid = &fid;
9cbc0b73 635 oparms.reconnect = false;
064f6047 636
9d874c36 637 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2503a0db
PS		 638 if (rc) {
639 kfree(utf16_path);
640 return rc;
641 }
642
064f6047 643 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2503a0db
PS		 644 kfree(utf16_path);
645 return rc;
646}
647
be4cb9e3
PS		 648static int
649smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
650 struct cifs_sb_info *cifs_sb, const char *full_path,
651 u64 *uniqueid, FILE_ALL_INFO *data)
652{
653 *uniqueid = le64_to_cpu(data->IndexNumber);
654 return 0;
655}
656
b7546bc5
PS		 657static int
658smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
659 struct cifs_fid *fid, FILE_ALL_INFO *data)
660{
661 int rc;
662 struct smb2_file_all_info *smb2_data;
663
1bbe4997 664 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
b7546bc5
PS		 665 GFP_KERNEL);
666 if (smb2_data == NULL)
667 return -ENOMEM;
668
669 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
670 smb2_data);
671 if (!rc)
672 move_smb2_info_to_cifs(data, smb2_data);
673 kfree(smb2_data);
674 return rc;
675}
676
1368f155 677#ifdef CONFIG_CIFS_XATTR
95907fea
RS		 678static ssize_t
679move_smb2_ea_to_cifs(char *dst, size_t dst_size,
680 struct smb2_file_full_ea_info *src, size_t src_size,
681 const unsigned char *ea_name)
682{
683 int rc = 0;
684 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
685 char *name, *value;
686 size_t name_len, value_len, user_name_len;
687
688 while (src_size > 0) {
689 name = &src->ea_data[0];
690 name_len = (size_t)src->ea_name_length;
691 value = &src->ea_data[src->ea_name_length + 1];
692 value_len = (size_t)le16_to_cpu(src->ea_value_length);
693
694 if (name_len == 0) {
695 break;
696 }
697
698 if (src_size < 8 + name_len + 1 + value_len) {
699 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
700 rc = -EIO;
701 goto out;
702 }
703
704 if (ea_name) {
705 if (ea_name_len == name_len &&
706 memcmp(ea_name, name, name_len) == 0) {
707 rc = value_len;
708 if (dst_size == 0)
709 goto out;
710 if (dst_size < value_len) {
711 rc = -ERANGE;
712 goto out;
713 }
714 memcpy(dst, value, value_len);
715 goto out;
716 }
717 } else {
718 /* 'user.' plus a terminating null */
719 user_name_len = 5 + 1 + name_len;
720
721 rc += user_name_len;
722
723 if (dst_size >= user_name_len) {
724 dst_size -= user_name_len;
725 memcpy(dst, "user.", 5);
726 dst += 5;
727 memcpy(dst, src->ea_data, name_len);
728 dst += name_len;
729 *dst = 0;
730 ++dst;
731 } else if (dst_size == 0) {
732 /* skip copy - calc size only */
733 } else {
734 /* stop before overrun buffer */
735 rc = -ERANGE;
736 break;
737 }
738 }
739
740 if (!src->next_entry_offset)
741 break;
742
743 if (src_size < le32_to_cpu(src->next_entry_offset)) {
744 /* stop before overrun buffer */
745 rc = -ERANGE;
746 break;
747 }
748 src_size -= le32_to_cpu(src->next_entry_offset);
749 src = (void *)((char *)src +
750 le32_to_cpu(src->next_entry_offset));
751 }
752
753 /* didn't find the named attribute */
754 if (ea_name)
755 rc = -ENODATA;
756
757out:
758 return (ssize_t)rc;
759}
760
761static ssize_t
762smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
763 const unsigned char *path, const unsigned char *ea_name,
764 char *ea_data, size_t buf_size,
765 struct cifs_sb_info *cifs_sb)
766{
767 int rc;
768 __le16 *utf16_path;
769 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
770 struct cifs_open_parms oparms;
771 struct cifs_fid fid;
772 struct smb2_file_full_ea_info *smb2_data;
7cb3def4 773 int ea_buf_size = SMB2_MIN_EA_BUF;
95907fea
RS		 774
775 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
776 if (!utf16_path)
777 return -ENOMEM;
778
779 oparms.tcon = tcon;
780 oparms.desired_access = FILE_READ_EA;
781 oparms.disposition = FILE_OPEN;
782 oparms.create_options = 0;
783 oparms.fid = &fid;
784 oparms.reconnect = false;
785
9d874c36 786 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
95907fea
RS		 787 kfree(utf16_path);
788 if (rc) {
789 cifs_dbg(FYI, "open failed rc=%d\n", rc);
790 return rc;
791 }
792
7cb3def4
RS		 793 while (1) {
794 smb2_data = kzalloc(ea_buf_size, GFP_KERNEL);
795 if (smb2_data == NULL) {
796 SMB2_close(xid, tcon, fid.persistent_fid,
797 fid.volatile_fid);
798 return -ENOMEM;
799 }
800
801 rc = SMB2_query_eas(xid, tcon, fid.persistent_fid,
802 fid.volatile_fid,
803 ea_buf_size, smb2_data);
804
805 if (rc != -E2BIG)
806 break;
807
808 kfree(smb2_data);
809 ea_buf_size <<= 1;
810
811 if (ea_buf_size > SMB2_MAX_EA_BUF) {
812 cifs_dbg(VFS, "EA size is too large\n");
813 SMB2_close(xid, tcon, fid.persistent_fid,
814 fid.volatile_fid);
815 return -ENOMEM;
816 }
95907fea
RS		 817 }
818
95907fea
RS		 819 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
820
ae2cd7fb
PA		 821 /*
822 * If ea_name is NULL (listxattr) and there are no EAs, return 0 as it's
823 * not an error. Otherwise, the specified ea_name was not found.
824 */
95907fea
RS		 825 if (!rc)
826 rc = move_smb2_ea_to_cifs(ea_data, buf_size, smb2_data,
827 SMB2_MAX_EA_BUF, ea_name);
ae2cd7fb
PA		 828 else if (!ea_name && rc == -ENODATA)
829 rc = 0;
95907fea
RS		 830
831 kfree(smb2_data);
832 return rc;
833}
834
5517554e
RS		 835
836static int
837smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
838 const char *path, const char *ea_name, const void *ea_value,
839 const __u16 ea_value_len, const struct nls_table *nls_codepage,
840 struct cifs_sb_info *cifs_sb)
841{
842 int rc;
843 __le16 *utf16_path;
844 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
845 struct cifs_open_parms oparms;
846 struct cifs_fid fid;
847 struct smb2_file_full_ea_info *ea;
848 int ea_name_len = strlen(ea_name);
849 int len;
850
851 if (ea_name_len > 255)
852 return -EINVAL;
853
854 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
855 if (!utf16_path)
856 return -ENOMEM;
857
858 oparms.tcon = tcon;
859 oparms.desired_access = FILE_WRITE_EA;
860 oparms.disposition = FILE_OPEN;
861 oparms.create_options = 0;
862 oparms.fid = &fid;
863 oparms.reconnect = false;
864
9d874c36 865 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
5517554e
RS		 866 kfree(utf16_path);
867 if (rc) {
868 cifs_dbg(FYI, "open failed rc=%d\n", rc);
869 return rc;
870 }
871
872 len = sizeof(ea) + ea_name_len + ea_value_len + 1;
873 ea = kzalloc(len, GFP_KERNEL);
874 if (ea == NULL) {
875 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
876 return -ENOMEM;
877 }
878
879 ea->ea_name_length = ea_name_len;
880 ea->ea_value_length = cpu_to_le16(ea_value_len);
881 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
882 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
883
884 rc = SMB2_set_ea(xid, tcon, fid.persistent_fid, fid.volatile_fid, ea,
885 len);
6aa0c114
PA		 886 kfree(ea);
887
5517554e
RS		 888 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
889
890 return rc;
891}
1368f155 892#endif
5517554e 893
9094fad1
PS		 894static bool
895smb2_can_echo(struct TCP_Server_Info *server)
896{
897 return server->echoes;
898}
899
d60622eb
PS		 900static void
901smb2_clear_stats(struct cifs_tcon *tcon)
902{
d60622eb
PS		 903 int i;
904 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
905 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
906 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
907 }
d60622eb
PS		 908}
909
769ee6a4
SF		 910static void
911smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
912{
913 seq_puts(m, "\n\tShare Capabilities:");
914 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
915 seq_puts(m, " DFS,");
916 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
917 seq_puts(m, " CONTINUOUS AVAILABILITY,");
918 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
919 seq_puts(m, " SCALEOUT,");
920 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
921 seq_puts(m, " CLUSTER,");
922 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
923 seq_puts(m, " ASYMMETRIC,");
924 if (tcon->capabilities == 0)
925 seq_puts(m, " None");
af6a12ea
SF		 926 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
927 seq_puts(m, " Aligned,");
928 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
929 seq_puts(m, " Partition Aligned,");
930 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
931 seq_puts(m, " SSD,");
932 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
933 seq_puts(m, " TRIM-support,");
934
769ee6a4 935 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
e0386e44 936 seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
af6a12ea
SF		 937 if (tcon->perf_sector_size)
938 seq_printf(m, "\tOptimal sector size: 0x%x",
939 tcon->perf_sector_size);
e0386e44 940 seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
769ee6a4
SF		 941}
942
d60622eb
PS		 943static void
944smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
945{
d60622eb
PS		 946 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
947 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
1995d28f
SF		 948
949 /*
950 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
951 * totals (requests sent) since those SMBs are per-session not per tcon
952 */
52ce1ac4
SF		 953 seq_printf(m, "\nBytes read: %llu Bytes written: %llu",
954 (long long)(tcon->bytes_read),
955 (long long)(tcon->bytes_written));
1995d28f 956 seq_printf(m, "\nTreeConnects: %d total %d failed",
d60622eb
PS		 957 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
958 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
1995d28f 959 seq_printf(m, "\nTreeDisconnects: %d total %d failed",
d60622eb
PS		 960 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
961 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
1995d28f 962 seq_printf(m, "\nCreates: %d total %d failed",
d60622eb
PS		 963 atomic_read(&sent[SMB2_CREATE_HE]),
964 atomic_read(&failed[SMB2_CREATE_HE]));
1995d28f 965 seq_printf(m, "\nCloses: %d total %d failed",
d60622eb
PS		 966 atomic_read(&sent[SMB2_CLOSE_HE]),
967 atomic_read(&failed[SMB2_CLOSE_HE]));
1995d28f 968 seq_printf(m, "\nFlushes: %d total %d failed",
d60622eb
PS		 969 atomic_read(&sent[SMB2_FLUSH_HE]),
970 atomic_read(&failed[SMB2_FLUSH_HE]));
1995d28f 971 seq_printf(m, "\nReads: %d total %d failed",
d60622eb
PS		 972 atomic_read(&sent[SMB2_READ_HE]),
973 atomic_read(&failed[SMB2_READ_HE]));
1995d28f 974 seq_printf(m, "\nWrites: %d total %d failed",
d60622eb
PS		 975 atomic_read(&sent[SMB2_WRITE_HE]),
976 atomic_read(&failed[SMB2_WRITE_HE]));
1995d28f 977 seq_printf(m, "\nLocks: %d total %d failed",
d60622eb
PS		 978 atomic_read(&sent[SMB2_LOCK_HE]),
979 atomic_read(&failed[SMB2_LOCK_HE]));
1995d28f 980 seq_printf(m, "\nIOCTLs: %d total %d failed",
d60622eb
PS		 981 atomic_read(&sent[SMB2_IOCTL_HE]),
982 atomic_read(&failed[SMB2_IOCTL_HE]));
1995d28f 983 seq_printf(m, "\nQueryDirectories: %d total %d failed",
d60622eb
PS		 984 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
985 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
1995d28f 986 seq_printf(m, "\nChangeNotifies: %d total %d failed",
d60622eb
PS		 987 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
988 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
1995d28f 989 seq_printf(m, "\nQueryInfos: %d total %d failed",
d60622eb
PS		 990 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
991 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
1995d28f 992 seq_printf(m, "\nSetInfos: %d total %d failed",
d60622eb
PS		 993 atomic_read(&sent[SMB2_SET_INFO_HE]),
994 atomic_read(&failed[SMB2_SET_INFO_HE]));
995 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
996 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
997 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
d60622eb
PS		 998}
999
f0df737e
PS		 1000static void
1001smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
1002{
2b0143b5 1003 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
53ef1016
PS		 1004 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
1005
f0df737e
PS		 1006 cfile->fid.persistent_fid = fid->persistent_fid;
1007 cfile->fid.volatile_fid = fid->volatile_fid;
42873b0a
PS		 1008 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
1009 &fid->purge_cache);
18cceb6a 1010 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
94f87371 1011 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
f0df737e
PS		 1012}
1013
760ad0ca 1014static void
f0df737e
PS		 1015smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
1016 struct cifs_fid *fid)
1017{
760ad0ca 1018 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
f0df737e
PS		 1019}
1020
41c1358e
SF		 1021static int
1022SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
1023 u64 persistent_fid, u64 volatile_fid,
1024 struct copychunk_ioctl *pcchunk)
1025{
1026 int rc;
1027 unsigned int ret_data_len;
1028 struct resume_key_req *res_key;
1029
1030 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
1031 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
1032 NULL, 0 /* no input */,
1033 (char **)&res_key, &ret_data_len);
1034
1035 if (rc) {
1036 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
1037 goto req_res_key_exit;
1038 }
1039 if (ret_data_len < sizeof(struct resume_key_req)) {
1040 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
1041 rc = -EINVAL;
1042 goto req_res_key_exit;
1043 }
1044 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
1045
1046req_res_key_exit:
1047 kfree(res_key);
1048 return rc;
1049}
1050
620d8745 1051static ssize_t
312bbc59 1052smb2_copychunk_range(const unsigned int xid,
41c1358e
SF		 1053 struct cifsFileInfo *srcfile,
1054 struct cifsFileInfo *trgtfile, u64 src_off,
1055 u64 len, u64 dest_off)
1056{
1057 int rc;
1058 unsigned int ret_data_len;
1059 struct copychunk_ioctl *pcchunk;
9bf0c9cd
SF		 1060 struct copychunk_ioctl_rsp *retbuf = NULL;
1061 struct cifs_tcon *tcon;
1062 int chunks_copied = 0;
1063 bool chunk_sizes_updated = false;
620d8745 1064 ssize_t bytes_written, total_bytes_written = 0;
41c1358e
SF		 1065
1066 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
1067
1068 if (pcchunk == NULL)
1069 return -ENOMEM;
1070
312bbc59 1071 cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
41c1358e
SF		 1072 /* Request a key from the server to identify the source of the copy */
1073 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
1074 srcfile->fid.persistent_fid,
1075 srcfile->fid.volatile_fid, pcchunk);
1076
1077 /* Note: request_res_key sets res_key null only if rc !=0 */
1078 if (rc)
9bf0c9cd 1079 goto cchunk_out;
41c1358e
SF		 1080
1081 /* For now array only one chunk long, will make more flexible later */
bc09d141 1082 pcchunk->ChunkCount = cpu_to_le32(1);
41c1358e 1083 pcchunk->Reserved = 0;
41c1358e
SF		 1084 pcchunk->Reserved2 = 0;
1085
9bf0c9cd 1086 tcon = tlink_tcon(trgtfile->tlink);
41c1358e 1087
9bf0c9cd
SF		 1088 while (len > 0) {
1089 pcchunk->SourceOffset = cpu_to_le64(src_off);
1090 pcchunk->TargetOffset = cpu_to_le64(dest_off);
1091 pcchunk->Length =
1092 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
41c1358e 1093
9bf0c9cd
SF		 1094 /* Request server copy to target from src identified by key */
1095 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1096 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
63a83b86 1097 true /* is_fsctl */, (char *)pcchunk,
9bf0c9cd
SF		 1098 sizeof(struct copychunk_ioctl), (char **)&retbuf,
1099 &ret_data_len);
1100 if (rc == 0) {
1101 if (ret_data_len !=
1102 sizeof(struct copychunk_ioctl_rsp)) {
1103 cifs_dbg(VFS, "invalid cchunk response size\n");
1104 rc = -EIO;
1105 goto cchunk_out;
1106 }
1107 if (retbuf->TotalBytesWritten == 0) {
1108 cifs_dbg(FYI, "no bytes copied\n");
1109 rc = -EIO;
1110 goto cchunk_out;
1111 }
1112 /*
1113 * Check if server claimed to write more than we asked
1114 */
1115 if (le32_to_cpu(retbuf->TotalBytesWritten) >
1116 le32_to_cpu(pcchunk->Length)) {
1117 cifs_dbg(VFS, "invalid copy chunk response\n");
1118 rc = -EIO;
1119 goto cchunk_out;
1120 }
1121 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
1122 cifs_dbg(VFS, "invalid num chunks written\n");
1123 rc = -EIO;
1124 goto cchunk_out;
1125 }
1126 chunks_copied++;
1127
620d8745
SP		 1128 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
1129 src_off += bytes_written;
1130 dest_off += bytes_written;
1131 len -= bytes_written;
1132 total_bytes_written += bytes_written;
9bf0c9cd 1133
620d8745 1134 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
9bf0c9cd
SF		 1135 le32_to_cpu(retbuf->ChunksWritten),
1136 le32_to_cpu(retbuf->ChunkBytesWritten),
620d8745 1137 bytes_written);
9bf0c9cd
SF		 1138 } else if (rc == -EINVAL) {
1139 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
1140 goto cchunk_out;
1141
1142 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1143 le32_to_cpu(retbuf->ChunksWritten),
1144 le32_to_cpu(retbuf->ChunkBytesWritten),
1145 le32_to_cpu(retbuf->TotalBytesWritten));
1146
1147 /*
1148 * Check if this is the first request using these sizes,
1149 * (ie check if copy succeed once with original sizes
1150 * and check if the server gave us different sizes after
1151 * we already updated max sizes on previous request).
1152 * if not then why is the server returning an error now
1153 */
1154 if ((chunks_copied != 0) || chunk_sizes_updated)
1155 goto cchunk_out;
1156
1157 /* Check that server is not asking us to grow size */
1158 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
1159 tcon->max_bytes_chunk)
1160 tcon->max_bytes_chunk =
1161 le32_to_cpu(retbuf->ChunkBytesWritten);
1162 else
1163 goto cchunk_out; /* server gave us bogus size */
1164
1165 /* No need to change MaxChunks since already set to 1 */
1166 chunk_sizes_updated = true;
2477bc58
SP		 1167 } else
1168 goto cchunk_out;
9bf0c9cd 1169 }
41c1358e 1170
9bf0c9cd 1171cchunk_out:
41c1358e 1172 kfree(pcchunk);
24df1483 1173 kfree(retbuf);
620d8745
SP		 1174 if (rc)
1175 return rc;
1176 else
1177 return total_bytes_written;
41c1358e
SF		 1178}
1179
7a5cfb19
PS		 1180static int
1181smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1182 struct cifs_fid *fid)
1183{
1184 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1185}
1186
09a4707e
PS		 1187static unsigned int
1188smb2_read_data_offset(char *buf)
1189{
1190 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1191 return rsp->DataOffset;
1192}
1193
1194static unsigned int
74dcf418 1195smb2_read_data_length(char *buf, bool in_remaining)
09a4707e
PS		 1196{
1197 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
74dcf418
LL		 1198
1199 if (in_remaining)
1200 return le32_to_cpu(rsp->DataRemaining);
1201
09a4707e
PS		 1202 return le32_to_cpu(rsp->DataLength);
1203}
1204
d8e05039
PS		 1205
1206static int
db8b631d 1207smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
d8e05039
PS		 1208 struct cifs_io_parms *parms, unsigned int *bytes_read,
1209 char **buf, int *buf_type)
1210{
db8b631d
SF		 1211 parms->persistent_fid = pfid->persistent_fid;
1212 parms->volatile_fid = pfid->volatile_fid;
d8e05039
PS		 1213 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1214}
1215
009d3443 1216static int
db8b631d 1217smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
009d3443
PS		 1218 struct cifs_io_parms *parms, unsigned int *written,
1219 struct kvec *iov, unsigned long nr_segs)
1220{
1221
db8b631d
SF		 1222 parms->persistent_fid = pfid->persistent_fid;
1223 parms->volatile_fid = pfid->volatile_fid;
009d3443
PS		 1224 return SMB2_write(xid, parms, written, iov, nr_segs);
1225}
1226
d43cc793
SF		 1227/* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1228static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1229 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1230{
1231 struct cifsInodeInfo *cifsi;
1232 int rc;
1233
1234 cifsi = CIFS_I(inode);
1235
1236 /* if file already sparse don't bother setting sparse again */
1237 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1238 return true; /* already sparse */
1239
1240 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1241 return true; /* already not sparse */
1242
1243 /*
1244 * Can't check for sparse support on share the usual way via the
1245 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1246 * since Samba server doesn't set the flag on the share, yet
1247 * supports the set sparse FSCTL and returns sparse correctly
1248 * in the file attributes. If we fail setting sparse though we
1249 * mark that server does not support sparse files for this share
1250 * to avoid repeatedly sending the unsupported fsctl to server
1251 * if the file is repeatedly extended.
1252 */
1253 if (tcon->broken_sparse_sup)
1254 return false;
1255
1256 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1257 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
63a83b86 1258 true /* is_fctl */,
51146625 1259 &setsparse, 1, NULL, NULL);
d43cc793
SF		 1260 if (rc) {
1261 tcon->broken_sparse_sup = true;
1262 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1263 return false;
1264 }
1265
1266 if (setsparse)
1267 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1268 else
1269 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1270
1271 return true;
1272}
1273
c839ff24
PS		 1274static int
1275smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1276 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1277{
1278 __le64 eof = cpu_to_le64(size);
3d1a3745
SF		 1279 struct inode *inode;
1280
1281 /*
1282 * If extending file more than one page make sparse. Many Linux fs
1283 * make files sparse by default when extending via ftruncate
1284 */
2b0143b5 1285 inode = d_inode(cfile->dentry);
3d1a3745
SF		 1286
1287 if (!set_alloc && (size > inode->i_size + 8192)) {
3d1a3745 1288 __u8 set_sparse = 1;
d43cc793
SF		 1289
1290 /* whether set sparse succeeds or not, extend the file */
1291 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
3d1a3745
SF		 1292 }
1293
c839ff24 1294 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
f29ebb47 1295 cfile->fid.volatile_fid, cfile->pid, &eof, false);
c839ff24
PS		 1296}
1297
02b16665
SF		 1298static int
1299smb2_duplicate_extents(const unsigned int xid,
1300 struct cifsFileInfo *srcfile,
1301 struct cifsFileInfo *trgtfile, u64 src_off,
1302 u64 len, u64 dest_off)
1303{
1304 int rc;
1305 unsigned int ret_data_len;
02b16665
SF		 1306 struct duplicate_extents_to_file dup_ext_buf;
1307 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1308
1309 /* server fileays advertise duplicate extent support with this flag */
1310 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1311 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1312 return -EOPNOTSUPP;
1313
1314 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1315 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1316 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1317 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1318 dup_ext_buf.ByteCount = cpu_to_le64(len);
1319 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
1320 src_off, dest_off, len);
1321
1322 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1323 if (rc)
1324 goto duplicate_extents_out;
1325
1326 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1327 trgtfile->fid.volatile_fid,
1328 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
63a83b86 1329 true /* is_fsctl */,
51146625 1330 (char *)&dup_ext_buf,
02b16665 1331 sizeof(struct duplicate_extents_to_file),
24df1483 1332 NULL,
02b16665
SF		 1333 &ret_data_len);
1334
1335 if (ret_data_len > 0)
1336 cifs_dbg(FYI, "non-zero response length in duplicate extents");
1337
1338duplicate_extents_out:
1339 return rc;
1340}
02b16665 1341
64a5cfa6
SF		 1342static int
1343smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
1344 struct cifsFileInfo *cfile)
1345{
1346 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
1347 cfile->fid.volatile_fid);
1348}
1349
b3152e2c
SF		 1350static int
1351smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
1352 struct cifsFileInfo *cfile)
1353{
1354 struct fsctl_set_integrity_information_req integr_info;
b3152e2c
SF		 1355 unsigned int ret_data_len;
1356
1357 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
1358 integr_info.Flags = 0;
1359 integr_info.Reserved = 0;
1360
1361 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1362 cfile->fid.volatile_fid,
1363 FSCTL_SET_INTEGRITY_INFORMATION,
63a83b86 1364 true /* is_fsctl */,
51146625 1365 (char *)&integr_info,
b3152e2c 1366 sizeof(struct fsctl_set_integrity_information_req),
24df1483 1367 NULL,
b3152e2c
SF		 1368 &ret_data_len);
1369
1370}
1371
e02789a5
SF		 1372/* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
1373#define GMT_TOKEN_SIZE 50
1374
1375/*
1376 * Input buffer contains (empty) struct smb_snapshot array with size filled in
1377 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
1378 */
834170c8
SF		 1379static int
1380smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
1381 struct cifsFileInfo *cfile, void __user *ioc_buf)
1382{
1383 char *retbuf = NULL;
1384 unsigned int ret_data_len = 0;
1385 int rc;
1386 struct smb_snapshot_array snapshot_in;
1387
1388 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1389 cfile->fid.volatile_fid,
1390 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
63a83b86 1391 true /* is_fsctl */,
51146625 1392 NULL, 0 /* no input data */,
834170c8
SF		 1393 (char **)&retbuf,
1394 &ret_data_len);
1395 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
1396 rc, ret_data_len);
1397 if (rc)
1398 return rc;
1399
1400 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
1401 /* Fixup buffer */
1402 if (copy_from_user(&snapshot_in, ioc_buf,
1403 sizeof(struct smb_snapshot_array))) {
1404 rc = -EFAULT;
1405 kfree(retbuf);
1406 return rc;
1407 }
834170c8 1408
e02789a5
SF		 1409 /*
1410 * Check for min size, ie not large enough to fit even one GMT
1411 * token (snapshot). On the first ioctl some users may pass in
1412 * smaller size (or zero) to simply get the size of the array
1413 * so the user space caller can allocate sufficient memory
1414 * and retry the ioctl again with larger array size sufficient
1415 * to hold all of the snapshot GMT tokens on the second try.
1416 */
1417 if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
1418 ret_data_len = sizeof(struct smb_snapshot_array);
1419
1420 /*
1421 * We return struct SRV_SNAPSHOT_ARRAY, followed by
1422 * the snapshot array (of 50 byte GMT tokens) each
1423 * representing an available previous version of the data
1424 */
1425 if (ret_data_len > (snapshot_in.snapshot_array_size +
1426 sizeof(struct smb_snapshot_array)))
1427 ret_data_len = snapshot_in.snapshot_array_size +
1428 sizeof(struct smb_snapshot_array);
834170c8
SF		 1429
1430 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
1431 rc = -EFAULT;
1432 }
1433
1434 kfree(retbuf);
1435 return rc;
1436}
1437
d324f08d
PS		 1438static int
1439smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
1440 const char *path, struct cifs_sb_info *cifs_sb,
1441 struct cifs_fid *fid, __u16 search_flags,
1442 struct cifs_search_info *srch_inf)
1443{
1444 __le16 *utf16_path;
1445 int rc;
2e44b288 1446 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047 1447 struct cifs_open_parms oparms;
d324f08d
PS		 1448
1449 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1450 if (!utf16_path)
1451 return -ENOMEM;
1452
064f6047
PS		 1453 oparms.tcon = tcon;
1454 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
1455 oparms.disposition = FILE_OPEN;
1456 oparms.create_options = 0;
1457 oparms.fid = fid;
9cbc0b73 1458 oparms.reconnect = false;
064f6047 1459
9d874c36 1460 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
d324f08d
PS		 1461 kfree(utf16_path);
1462 if (rc) {
dcd87838 1463 cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
d324f08d
PS		 1464 return rc;
1465 }
1466
1467 srch_inf->entries_in_buffer = 0;
1468 srch_inf->index_of_last_entry = 0;
d324f08d 1469
064f6047
PS		 1470 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
1471 fid->volatile_fid, 0, srch_inf);
d324f08d 1472 if (rc) {
dcd87838 1473 cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
064f6047 1474 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
d324f08d
PS		 1475 }
1476 return rc;
1477}
1478
1479static int
1480smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
1481 struct cifs_fid *fid, __u16 search_flags,
1482 struct cifs_search_info *srch_inf)
1483{
1484 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
1485 fid->volatile_fid, 0, srch_inf);
1486}
1487
1488static int
1489smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1490 struct cifs_fid *fid)
1491{
1492 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1493}
1494
2e44b288
PS		 1495/*
1496* If we negotiate SMB2 protocol and get STATUS_PENDING - update
1497* the number of credits and return true. Otherwise - return false.
1498*/
1499static bool
1500smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
1501{
49f466bd 1502 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2e44b288 1503
31473fc4 1504 if (shdr->Status != STATUS_PENDING)
2e44b288
PS		 1505 return false;
1506
1507 if (!length) {
1508 spin_lock(&server->req_lock);
31473fc4 1509 server->credits += le16_to_cpu(shdr->CreditRequest);
2e44b288
PS		 1510 spin_unlock(&server->req_lock);
1511 wake_up(&server->request_q);
1512 }
1513
1514 return true;
1515}
1516
511c54a2
PS		 1517static bool
1518smb2_is_session_expired(char *buf)
1519{
49f466bd 1520 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
511c54a2 1521
d81243c6
MS		 1522 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
1523 shdr->Status != STATUS_USER_SESSION_DELETED)
511c54a2
PS		 1524 return false;
1525
e68a932b
SF		 1526 trace_smb3_ses_expired(shdr->TreeId, shdr->SessionId,
1527 le16_to_cpu(shdr->Command),
1528 le64_to_cpu(shdr->MessageId));
d81243c6 1529 cifs_dbg(FYI, "Session expired or deleted\n");
e68a932b 1530
511c54a2
PS		 1531 return true;
1532}
1533
983c88a4
PS		 1534static int
1535smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1536 struct cifsInodeInfo *cinode)
1537{
0822f514
PS		 1538 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1539 return SMB2_lease_break(0, tcon, cinode->lease_key,
1540 smb2_get_lease_state(cinode));
1541
983c88a4
PS		 1542 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1543 fid->volatile_fid,
18cceb6a 1544 CIFS_CACHE_READ(cinode) ? 1 : 0);
983c88a4
PS		 1545}
1546
730928c8
RS		 1547static void
1548smb2_set_related(struct smb_rqst *rqst)
1549{
1550 struct smb2_sync_hdr *shdr;
1551
1552 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
1553 shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
1554}
1555
1556char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
1557
1558static void
1559smb2_set_next_command(struct TCP_Server_Info *server, struct smb_rqst *rqst)
1560{
1561 struct smb2_sync_hdr *shdr;
1562 unsigned long len = smb_rqst_len(server, rqst);
1563
1564 /* SMB headers in a compound are 8 byte aligned. */
1565 if (len & 7) {
1566 rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
1567 rqst->rq_iov[rqst->rq_nvec].iov_len = 8 - (len & 7);
1568 rqst->rq_nvec++;
1569 len = smb_rqst_len(server, rqst);
1570 }
1571
1572 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
1573 shdr->NextCommand = cpu_to_le32(len);
1574}
1575
6fc05c25
PS		 1576static int
1577smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1578 struct kstatfs *buf)
1579{
730928c8
RS		 1580 struct smb2_query_info_rsp *rsp;
1581 struct smb2_fs_full_size_info *info = NULL;
1582 struct smb_rqst rqst[3];
1583 int resp_buftype[3];
1584 struct kvec rsp_iov[3];
1585 struct kvec open_iov[5]; /* 4 + potential padding. */
1586 struct kvec qi_iov[1];
1587 struct kvec close_iov[1];
1588 struct cifs_ses *ses = tcon->ses;
1589 struct TCP_Server_Info *server = ses->server;
6fc05c25
PS		 1590 __le16 srch_path = 0; /* Null - open root of share */
1591 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 1592 struct cifs_open_parms oparms;
1593 struct cifs_fid fid;
730928c8
RS		 1594 int flags = 0;
1595 int rc;
1596
1597 if (smb3_encryption_required(tcon))
1598 flags |= CIFS_TRANSFORM_REQ;
1599
1600 memset(rqst, 0, sizeof(rqst));
1601 memset(resp_buftype, 0, sizeof(resp_buftype));
1602 memset(rsp_iov, 0, sizeof(rsp_iov));
1603
1604 memset(&open_iov, 0, sizeof(open_iov));
1605 rqst[0].rq_iov = open_iov;
1606 rqst[0].rq_nvec = 4;
064f6047
PS		 1607
1608 oparms.tcon = tcon;
1609 oparms.desired_access = FILE_READ_ATTRIBUTES;
1610 oparms.disposition = FILE_OPEN;
1611 oparms.create_options = 0;
1612 oparms.fid = &fid;
9cbc0b73 1613 oparms.reconnect = false;
6fc05c25 1614
730928c8 1615 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &srch_path);
6fc05c25 1616 if (rc)
730928c8
RS		 1617 goto qfs_exit;
1618 smb2_set_next_command(server, &rqst[0]);
1619
1620 memset(&qi_iov, 0, sizeof(qi_iov));
1621 rqst[1].rq_iov = qi_iov;
1622 rqst[1].rq_nvec = 1;
1623
1624 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
1625 FS_FULL_SIZE_INFORMATION,
1626 SMB2_O_INFO_FILESYSTEM, 0,
1627 sizeof(struct smb2_fs_full_size_info));
1628 if (rc)
1629 goto qfs_exit;
1630 smb2_set_next_command(server, &rqst[1]);
1631 smb2_set_related(&rqst[1]);
1632
1633 memset(&close_iov, 0, sizeof(close_iov));
1634 rqst[2].rq_iov = close_iov;
1635 rqst[2].rq_nvec = 1;
1636
1637 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
1638 if (rc)
1639 goto qfs_exit;
1640 smb2_set_related(&rqst[2]);
1641
1642 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1643 resp_buftype, rsp_iov);
1644 if (rc)
1645 goto qfs_exit;
1646
1647 rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
6fc05c25 1648 buf->f_type = SMB2_MAGIC_NUMBER;
730928c8
RS		 1649 info = (struct smb2_fs_full_size_info *)(
1650 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
1651 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
1652 le32_to_cpu(rsp->OutputBufferLength),
1653 &rsp_iov[1],
1654 sizeof(struct smb2_fs_full_size_info));
1655 if (!rc)
1656 smb2_copy_fs_info_to_kstatfs(info, buf);
1657
1658qfs_exit:
1659 SMB2_open_free(&rqst[0]);
1660 SMB2_query_info_free(&rqst[1]);
1661 SMB2_close_free(&rqst[2]);
1662 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1663 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1664 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
6fc05c25
PS		 1665 return rc;
1666}
1667
2d304217
SF		 1668static int
1669smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1670 struct kstatfs *buf)
1671{
1672 int rc;
1673 __le16 srch_path = 0; /* Null - open root of share */
1674 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1675 struct cifs_open_parms oparms;
1676 struct cifs_fid fid;
1677
1678 if (!tcon->posix_extensions)
1679 return smb2_queryfs(xid, tcon, buf);
1680
1681 oparms.tcon = tcon;
1682 oparms.desired_access = FILE_READ_ATTRIBUTES;
1683 oparms.disposition = FILE_OPEN;
1684 oparms.create_options = 0;
1685 oparms.fid = &fid;
1686 oparms.reconnect = false;
1687
1688 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
1689 if (rc)
1690 return rc;
1691
1692 rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
1693 fid.volatile_fid, buf);
1694 buf->f_type = SMB2_MAGIC_NUMBER;
1695 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1696 return rc;
1697}
2d304217 1698
027e8eec
PS		 1699static bool
1700smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
1701{
1702 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
1703 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
1704}
1705
f7ba7fe6
PS		 1706static int
1707smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
1708 __u64 length, __u32 type, int lock, int unlock, bool wait)
1709{
1710 if (unlock && !lock)
1711 type = SMB2_LOCKFLAG_UNLOCK;
1712 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
1713 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
1714 current->tgid, length, offset, type, wait);
1715}
1716
b8c32dbb
PS		 1717static void
1718smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
1719{
1720 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
1721}
1722
1723static void
1724smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
1725{
1726 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
1727}
1728
1729static void
1730smb2_new_lease_key(struct cifs_fid *fid)
1731{
fa70b87c 1732 generate_random_uuid(fid->lease_key);
b8c32dbb
PS		 1733}
1734
9d49640a
AA		 1735static int
1736smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
1737 const char *search_name,
1738 struct dfs_info3_param **target_nodes,
1739 unsigned int *num_of_nodes,
1740 const struct nls_table *nls_codepage, int remap)
1741{
1742 int rc;
1743 __le16 *utf16_path = NULL;
1744 int utf16_path_len = 0;
1745 struct cifs_tcon *tcon;
1746 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
1747 struct get_dfs_referral_rsp *dfs_rsp = NULL;
1748 u32 dfs_req_size = 0, dfs_rsp_size = 0;
1749
1750 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
1751
1752 /*
63a83b86 1753 * Try to use the IPC tcon, otherwise just use any
9d49640a 1754 */
63a83b86
AA		 1755 tcon = ses->tcon_ipc;
1756 if (tcon == NULL) {
1757 spin_lock(&cifs_tcp_ses_lock);
1758 tcon = list_first_entry_or_null(&ses->tcon_list,
1759 struct cifs_tcon,
1760 tcon_list);
1761 if (tcon)
1762 tcon->tc_count++;
1763 spin_unlock(&cifs_tcp_ses_lock);
1764 }
1765
1766 if (tcon == NULL) {
9d49640a
AA		 1767 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
1768 ses);
1769 rc = -ENOTCONN;
1770 goto out;
1771 }
1772
1773 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
1774 &utf16_path_len,
1775 nls_codepage, remap);
1776 if (!utf16_path) {
1777 rc = -ENOMEM;
1778 goto out;
1779 }
1780
1781 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
1782 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
1783 if (!dfs_req) {
1784 rc = -ENOMEM;
1785 goto out;
1786 }
1787
1788 /* Highest DFS referral version understood */
1789 dfs_req->MaxReferralLevel = DFS_VERSION;
1790
1791 /* Path to resolve in an UTF-16 null-terminated string */
1792 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
1793
1794 do {
9d49640a
AA		 1795 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1796 FSCTL_DFS_GET_REFERRALS,
63a83b86 1797 true /* is_fsctl */,
9d49640a
AA		 1798 (char *)dfs_req, dfs_req_size,
1799 (char **)&dfs_rsp, &dfs_rsp_size);
9d49640a
AA		 1800 } while (rc == -EAGAIN);
1801
1802 if (rc) {
2564f2ff 1803 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
5702591f 1804 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
9d49640a
AA		 1805 goto out;
1806 }
1807
1808 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
1809 num_of_nodes, target_nodes,
1810 nls_codepage, remap, search_name,
1811 true /* is_unicode */);
1812 if (rc) {
1813 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
1814 goto out;
1815 }
1816
1817 out:
63a83b86
AA		 1818 if (tcon && !tcon->ipc) {
1819 /* ipc tcons are not refcounted */
9d49640a
AA		 1820 spin_lock(&cifs_tcp_ses_lock);
1821 tcon->tc_count--;
1822 spin_unlock(&cifs_tcp_ses_lock);
1823 }
1824 kfree(utf16_path);
1825 kfree(dfs_req);
1826 kfree(dfs_rsp);
1827 return rc;
1828}
7893242e
PS		 1829#define SMB2_SYMLINK_STRUCT_SIZE \
1830 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
1831
b42bf888
PS		 1832static int
1833smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
1834 const char *full_path, char **target_path,
1835 struct cifs_sb_info *cifs_sb)
1836{
1837 int rc;
1838 __le16 *utf16_path;
1839 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1840 struct cifs_open_parms oparms;
1841 struct cifs_fid fid;
91cb74f5 1842 struct kvec err_iov = {NULL, 0};
9d874c36
RS		 1843 struct smb2_err_rsp *err_buf = NULL;
1844 int resp_buftype;
b42bf888 1845 struct smb2_symlink_err_rsp *symlink;
7893242e
PS		 1846 unsigned int sub_len;
1847 unsigned int sub_offset;
1848 unsigned int print_len;
1849 unsigned int print_offset;
b42bf888
PS		 1850
1851 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
1852
1853 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
1854 if (!utf16_path)
1855 return -ENOMEM;
1856
1857 oparms.tcon = tcon;
1858 oparms.desired_access = FILE_READ_ATTRIBUTES;
1859 oparms.disposition = FILE_OPEN;
1860 oparms.create_options = 0;
1861 oparms.fid = &fid;
1862 oparms.reconnect = false;
1863
9d874c36
RS		 1864 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_iov,
1865 &resp_buftype);
0d568cd3 1866 if (!rc || !err_iov.iov_base) {
9d874c36 1867 rc = -ENOENT;
ff361fda 1868 goto free_path;
b42bf888 1869 }
7893242e 1870
91cb74f5 1871 err_buf = err_iov.iov_base;
7893242e 1872 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1fc6ad2f 1873 err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) {
9d874c36
RS		 1874 rc = -ENOENT;
1875 goto querty_exit;
7893242e
PS		 1876 }
1877
b42bf888
PS		 1878 /* open must fail on symlink - reset rc */
1879 rc = 0;
1880 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
1881 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
1882 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
7893242e
PS		 1883 print_len = le16_to_cpu(symlink->PrintNameLength);
1884 print_offset = le16_to_cpu(symlink->PrintNameOffset);
1885
1fc6ad2f 1886 if (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
9d874c36
RS		 1887 rc = -ENOENT;
1888 goto querty_exit;
7893242e
PS		 1889 }
1890
1fc6ad2f
RS		 1891 if (err_iov.iov_len <
1892 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
9d874c36
RS		 1893 rc = -ENOENT;
1894 goto querty_exit;
7893242e
PS		 1895 }
1896
b42bf888
PS		 1897 *target_path = cifs_strndup_from_utf16(
1898 (char *)symlink->PathBuffer + sub_offset,
1899 sub_len, true, cifs_sb->local_nls);
1900 if (!(*target_path)) {
9d874c36
RS		 1901 rc = -ENOMEM;
1902 goto querty_exit;
b42bf888
PS		 1903 }
1904 convert_delimiter(*target_path, '/');
1905 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
9d874c36
RS		 1906
1907 querty_exit:
1908 free_rsp_buf(resp_buftype, err_buf);
ff361fda 1909 free_path:
b42bf888
PS		 1910 kfree(utf16_path);
1911 return rc;
1912}
1913
84908426 1914#ifdef CONFIG_CIFS_ACL
2f1afe25
SP		 1915static struct cifs_ntsd *
1916get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
1917 const struct cifs_fid *cifsfid, u32 *pacllen)
1918{
1919 struct cifs_ntsd *pntsd = NULL;
1920 unsigned int xid;
1921 int rc = -EOPNOTSUPP;
1922 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1923
1924 if (IS_ERR(tlink))
1925 return ERR_CAST(tlink);
1926
1927 xid = get_xid();
1928 cifs_dbg(FYI, "trying to get acl\n");
1929
1930 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
1931 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
1932 free_xid(xid);
1933
1934 cifs_put_tlink(tlink);
1935
1936 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1937 if (rc)
1938 return ERR_PTR(rc);
1939 return pntsd;
1940
1941}
1942
1943static struct cifs_ntsd *
1944get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
1945 const char *path, u32 *pacllen)
1946{
1947 struct cifs_ntsd *pntsd = NULL;
1948 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1949 unsigned int xid;
1950 int rc;
1951 struct cifs_tcon *tcon;
1952 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1953 struct cifs_fid fid;
1954 struct cifs_open_parms oparms;
1955 __le16 *utf16_path;
1956
1957 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
1958 if (IS_ERR(tlink))
1959 return ERR_CAST(tlink);
1960
1961 tcon = tlink_tcon(tlink);
1962 xid = get_xid();
1963
1964 if (backup_cred(cifs_sb))
709340a0 1965 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2f1afe25
SP		 1966 else
1967 oparms.create_options = 0;
1968
1969 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
cfe89091
SF		 1970 if (!utf16_path) {
1971 rc = -ENOMEM;
1972 free_xid(xid);
1973 return ERR_PTR(rc);
1974 }
2f1afe25
SP		 1975
1976 oparms.tcon = tcon;
1977 oparms.desired_access = READ_CONTROL;
1978 oparms.disposition = FILE_OPEN;
1979 oparms.fid = &fid;
1980 oparms.reconnect = false;
1981
9d874c36 1982 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2f1afe25
SP		 1983 kfree(utf16_path);
1984 if (!rc) {
1985 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
1986 fid.volatile_fid, (void **)&pntsd, pacllen);
1987 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1988 }
1989
1990 cifs_put_tlink(tlink);
1991 free_xid(xid);
1992
1993 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1994 if (rc)
1995 return ERR_PTR(rc);
1996 return pntsd;
1997}
1998
366ed846
SP		 1999#ifdef CONFIG_CIFS_ACL
2000static int
2001set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
2002 struct inode *inode, const char *path, int aclflag)
2003{
2004 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2005 unsigned int xid;
2006 int rc, access_flags = 0;
2007 struct cifs_tcon *tcon;
2008 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2009 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2010 struct cifs_fid fid;
2011 struct cifs_open_parms oparms;
2012 __le16 *utf16_path;
2013
2014 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
2015 if (IS_ERR(tlink))
2016 return PTR_ERR(tlink);
2017
2018 tcon = tlink_tcon(tlink);
2019 xid = get_xid();
2020
2021 if (backup_cred(cifs_sb))
2022 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2023 else
2024 oparms.create_options = 0;
2025
2026 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
2027 access_flags = WRITE_OWNER;
2028 else
2029 access_flags = WRITE_DAC;
2030
2031 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
cfe89091
SF		 2032 if (!utf16_path) {
2033 rc = -ENOMEM;
2034 free_xid(xid);
2035 return rc;
2036 }
366ed846
SP		 2037
2038 oparms.tcon = tcon;
2039 oparms.desired_access = access_flags;
2040 oparms.disposition = FILE_OPEN;
2041 oparms.path = path;
2042 oparms.fid = &fid;
2043 oparms.reconnect = false;
2044
9d874c36 2045 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
366ed846
SP		 2046 kfree(utf16_path);
2047 if (!rc) {
2048 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
2049 fid.volatile_fid, pnntsd, acllen, aclflag);
2050 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2051 }
2052
2053 cifs_put_tlink(tlink);
2054 free_xid(xid);
2055 return rc;
2056}
2057#endif /* CIFS_ACL */
2058
2f1afe25
SP		 2059/* Retrieve an ACL from the server */
2060static struct cifs_ntsd *
2061get_smb2_acl(struct cifs_sb_info *cifs_sb,
2062 struct inode *inode, const char *path,
2063 u32 *pacllen)
2064{
2065 struct cifs_ntsd *pntsd = NULL;
2066 struct cifsFileInfo *open_file = NULL;
2067
2068 if (inode)
2069 open_file = find_readable_file(CIFS_I(inode), true);
2070 if (!open_file)
2071 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
2072
2073 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
2074 cifsFileInfo_put(open_file);
2075 return pntsd;
2076}
84908426 2077#endif
2f1afe25 2078
30175628
SF		 2079static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
2080 loff_t offset, loff_t len, bool keep_size)
2081{
2082 struct inode *inode;
2083 struct cifsInodeInfo *cifsi;
2084 struct cifsFileInfo *cfile = file->private_data;
2085 struct file_zero_data_information fsctl_buf;
2086 long rc;
2087 unsigned int xid;
2088
2089 xid = get_xid();
2090
2b0143b5 2091 inode = d_inode(cfile->dentry);
30175628
SF		 2092 cifsi = CIFS_I(inode);
2093
2094 /* if file not oplocked can't be sure whether asking to extend size */
2095 if (!CIFS_CACHE_READ(cifsi))
cfe89091
SF		 2096 if (keep_size == false) {
2097 rc = -EOPNOTSUPP;
2098 free_xid(xid);
2099 return rc;
2100 }
30175628 2101
2bb93d24 2102 /*
30175628
SF		 2103 * Must check if file sparse since fallocate -z (zero range) assumes
2104 * non-sparse allocation
2105 */
cfe89091
SF		 2106 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
2107 rc = -EOPNOTSUPP;
2108 free_xid(xid);
2109 return rc;
2110 }
30175628
SF		 2111
2112 /*
2113 * need to make sure we are not asked to extend the file since the SMB3
2114 * fsctl does not change the file size. In the future we could change
2115 * this to zero the first part of the range then set the file size
2116 * which for a non sparse file would zero the newly extended range
2117 */
2118 if (keep_size == false)
cfe89091
SF		 2119 if (i_size_read(inode) < offset + len) {
2120 rc = -EOPNOTSUPP;
2121 free_xid(xid);
2122 return rc;
2123 }
30175628
SF		 2124
2125 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
2126
2127 fsctl_buf.FileOffset = cpu_to_le64(offset);
2128 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
2129
2130 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2131 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
63a83b86 2132 true /* is_fctl */, (char *)&fsctl_buf,
30175628
SF		 2133 sizeof(struct file_zero_data_information), NULL, NULL);
2134 free_xid(xid);
2135 return rc;
2136}
2137
31742c5a
SF		 2138static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
2139 loff_t offset, loff_t len)
2140{
2141 struct inode *inode;
2142 struct cifsInodeInfo *cifsi;
2143 struct cifsFileInfo *cfile = file->private_data;
2144 struct file_zero_data_information fsctl_buf;
2145 long rc;
2146 unsigned int xid;
2147 __u8 set_sparse = 1;
2148
2149 xid = get_xid();
2150
2b0143b5 2151 inode = d_inode(cfile->dentry);
31742c5a
SF		 2152 cifsi = CIFS_I(inode);
2153
2154 /* Need to make file sparse, if not already, before freeing range. */
2155 /* Consider adding equivalent for compressed since it could also work */
cfe89091
SF		 2156 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
2157 rc = -EOPNOTSUPP;
2158 free_xid(xid);
2159 return rc;
2160 }
31742c5a
SF		 2161
2162 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
2163
2164 fsctl_buf.FileOffset = cpu_to_le64(offset);
2165 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
2166
2167 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2168 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
63a83b86 2169 true /* is_fctl */, (char *)&fsctl_buf,
31742c5a
SF		 2170 sizeof(struct file_zero_data_information), NULL, NULL);
2171 free_xid(xid);
2172 return rc;
2173}
2174
9ccf3216
SF		 2175static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
2176 loff_t off, loff_t len, bool keep_size)
2177{
2178 struct inode *inode;
2179 struct cifsInodeInfo *cifsi;
2180 struct cifsFileInfo *cfile = file->private_data;
2181 long rc = -EOPNOTSUPP;
2182 unsigned int xid;
2183
2184 xid = get_xid();
2185
2b0143b5 2186 inode = d_inode(cfile->dentry);
9ccf3216
SF		 2187 cifsi = CIFS_I(inode);
2188
2189 /* if file not oplocked can't be sure whether asking to extend size */
2190 if (!CIFS_CACHE_READ(cifsi))
cfe89091
SF		 2191 if (keep_size == false) {
2192 free_xid(xid);
2193 return rc;
2194 }
9ccf3216
SF		 2195
2196 /*
2197 * Files are non-sparse by default so falloc may be a no-op
2198 * Must check if file sparse. If not sparse, and not extending
2199 * then no need to do anything since file already allocated
2200 */
2201 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
2202 if (keep_size == true)
cfe89091 2203 rc = 0;
9ccf3216
SF		 2204 /* check if extending file */
2205 else if (i_size_read(inode) >= off + len)
2206 /* not extending file and already not sparse */
cfe89091 2207 rc = 0;
9ccf3216
SF		 2208 /* BB: in future add else clause to extend file */
2209 else
cfe89091
SF		 2210 rc = -EOPNOTSUPP;
2211 free_xid(xid);
2212 return rc;
9ccf3216
SF		 2213 }
2214
2215 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
2216 /*
2217 * Check if falloc starts within first few pages of file
2218 * and ends within a few pages of the end of file to
2219 * ensure that most of file is being forced to be
2220 * fallocated now. If so then setting whole file sparse
2221 * ie potentially making a few extra pages at the beginning
2222 * or end of the file non-sparse via set_sparse is harmless.
2223 */
cfe89091
SF		 2224 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
2225 rc = -EOPNOTSUPP;
2226 free_xid(xid);
2227 return rc;
2228 }
9ccf3216
SF		 2229
2230 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
2231 }
2232 /* BB: else ... in future add code to extend file and set sparse */
2233
2234
2235 free_xid(xid);
2236 return rc;
2237}
2238
2239
31742c5a
SF		 2240static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
2241 loff_t off, loff_t len)
2242{
2243 /* KEEP_SIZE already checked for by do_fallocate */
2244 if (mode & FALLOC_FL_PUNCH_HOLE)
2245 return smb3_punch_hole(file, tcon, off, len);
30175628
SF		 2246 else if (mode & FALLOC_FL_ZERO_RANGE) {
2247 if (mode & FALLOC_FL_KEEP_SIZE)
2248 return smb3_zero_range(file, tcon, off, len, true);
2249 return smb3_zero_range(file, tcon, off, len, false);
9ccf3216
SF		 2250 } else if (mode == FALLOC_FL_KEEP_SIZE)
2251 return smb3_simple_falloc(file, tcon, off, len, true);
2252 else if (mode == 0)
2253 return smb3_simple_falloc(file, tcon, off, len, false);
31742c5a
SF		 2254
2255 return -EOPNOTSUPP;
2256}
2257
c11f1df5
SP		 2258static void
2259smb2_downgrade_oplock(struct TCP_Server_Info *server,
2260 struct cifsInodeInfo *cinode, bool set_level2)
2261{
2262 if (set_level2)
2263 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
2264 0, NULL);
2265 else
2266 server->ops->set_oplock_level(cinode, 0, 0, NULL);
2267}
2268
53ef1016 2269static void
42873b0a
PS		 2270smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2271 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 2272{
2273 oplock &= 0xFF;
2274 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2275 return;
2276 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
42873b0a 2277 cinode->oplock = CIFS_CACHE_RHW_FLG;
53ef1016
PS		 2278 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
2279 &cinode->vfs_inode);
2280 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
42873b0a 2281 cinode->oplock = CIFS_CACHE_RW_FLG;
53ef1016
PS		 2282 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
2283 &cinode->vfs_inode);
2284 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
2285 cinode->oplock = CIFS_CACHE_READ_FLG;
2286 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
2287 &cinode->vfs_inode);
2288 } else
2289 cinode->oplock = 0;
2290}
2291
2292static void
42873b0a
PS		 2293smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2294 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 2295{
2296 char message[5] = {0};
2297
2298 oplock &= 0xFF;
2299 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2300 return;
2301
2302 cinode->oplock = 0;
2303 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
2304 cinode->oplock |= CIFS_CACHE_READ_FLG;
2305 strcat(message, "R");
2306 }
2307 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
2308 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
2309 strcat(message, "H");
2310 }
2311 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
2312 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
2313 strcat(message, "W");
2314 }
2315 if (!cinode->oplock)
2316 strcat(message, "None");
2317 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
2318 &cinode->vfs_inode);
2319}
2320
42873b0a
PS		 2321static void
2322smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2323 unsigned int epoch, bool *purge_cache)
2324{
2325 unsigned int old_oplock = cinode->oplock;
2326
2327 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
2328
2329 if (purge_cache) {
2330 *purge_cache = false;
2331 if (old_oplock == CIFS_CACHE_READ_FLG) {
2332 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
2333 (epoch - cinode->epoch > 0))
2334 *purge_cache = true;
2335 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2336 (epoch - cinode->epoch > 1))
2337 *purge_cache = true;
2338 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2339 (epoch - cinode->epoch > 1))
2340 *purge_cache = true;
2341 else if (cinode->oplock == 0 &&
2342 (epoch - cinode->epoch > 0))
2343 *purge_cache = true;
2344 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
2345 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2346 (epoch - cinode->epoch > 0))
2347 *purge_cache = true;
2348 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2349 (epoch - cinode->epoch > 1))
2350 *purge_cache = true;
2351 }
2352 cinode->epoch = epoch;
2353 }
2354}
2355
53ef1016
PS		 2356static bool
2357smb2_is_read_op(__u32 oplock)
2358{
2359 return oplock == SMB2_OPLOCK_LEVEL_II;
2360}
2361
2362static bool
2363smb21_is_read_op(__u32 oplock)
2364{
2365 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
2366 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
2367}
2368
f047390a
PS		 2369static __le32
2370map_oplock_to_lease(u8 oplock)
2371{
2372 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
2373 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
2374 else if (oplock == SMB2_OPLOCK_LEVEL_II)
2375 return SMB2_LEASE_READ_CACHING;
2376 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
2377 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
2378 SMB2_LEASE_WRITE_CACHING;
2379 return 0;
2380}
2381
a41a28bd
PS		 2382static char *
2383smb2_create_lease_buf(u8 *lease_key, u8 oplock)
2384{
2385 struct create_lease *buf;
2386
2387 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
2388 if (!buf)
2389 return NULL;
2390
729c0c9d 2391 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
f047390a 2392 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
a41a28bd
PS		 2393
2394 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2395 (struct create_lease, lcontext));
2396 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
2397 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2398 (struct create_lease, Name));
2399 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 2400 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
a41a28bd
PS		 2401 buf->Name[0] = 'R';
2402 buf->Name[1] = 'q';
2403 buf->Name[2] = 'L';
2404 buf->Name[3] = 's';
2405 return (char *)buf;
2406}
2407
f047390a
PS		 2408static char *
2409smb3_create_lease_buf(u8 *lease_key, u8 oplock)
2410{
2411 struct create_lease_v2 *buf;
2412
2413 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
2414 if (!buf)
2415 return NULL;
2416
729c0c9d 2417 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
f047390a
PS		 2418 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2419
2420 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2421 (struct create_lease_v2, lcontext));
2422 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
2423 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2424 (struct create_lease_v2, Name));
2425 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 2426 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
f047390a
PS		 2427 buf->Name[0] = 'R';
2428 buf->Name[1] = 'q';
2429 buf->Name[2] = 'L';
2430 buf->Name[3] = 's';
2431 return (char *)buf;
2432}
2433
b5c7cde3 2434static __u8
96164ab2 2435smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
b5c7cde3
PS		 2436{
2437 struct create_lease *lc = (struct create_lease *)buf;
2438
42873b0a 2439 *epoch = 0; /* not used */
b5c7cde3
PS		 2440 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2441 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2442 return le32_to_cpu(lc->lcontext.LeaseState);
2443}
2444
f047390a 2445static __u8
96164ab2 2446smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
f047390a
PS		 2447{
2448 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
2449
42873b0a 2450 *epoch = le16_to_cpu(lc->lcontext.Epoch);
f047390a
PS		 2451 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2452 return SMB2_OPLOCK_LEVEL_NOCHANGE;
96164ab2 2453 if (lease_key)
729c0c9d 2454 memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
f047390a
PS		 2455 return le32_to_cpu(lc->lcontext.LeaseState);
2456}
2457
7f6c5008
PS		 2458static unsigned int
2459smb2_wp_retry_size(struct inode *inode)
2460{
2461 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
2462 SMB2_MAX_BUFFER_SIZE);
2463}
2464
52755808
PS		 2465static bool
2466smb2_dir_needs_close(struct cifsFileInfo *cfile)
2467{
2468 return !cfile->invalidHandle;
2469}
2470
026e93dc 2471static void
977b6170
RS		 2472fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
2473 struct smb_rqst *old_rq)
026e93dc
PS		 2474{
2475 struct smb2_sync_hdr *shdr =
c713c877 2476 (struct smb2_sync_hdr *)old_rq->rq_iov[0].iov_base;
026e93dc
PS		 2477
2478 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
2479 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
2480 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
2481 tr_hdr->Flags = cpu_to_le16(0x01);
2482 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2483 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
026e93dc
PS		 2484}
2485
262916bc
RS		 2486/* We can not use the normal sg_set_buf() as we will sometimes pass a
2487 * stack object as buf.
2488 */
2489static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
2490 unsigned int buflen)
2491{
2492 sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
2493}
2494
b2c96de7
RS		 2495/* Assumes the first rqst has a transform header as the first iov.
2496 * I.e.
2497 * rqst[0].rq_iov[0] is transform header
2498 * rqst[0].rq_iov[1+] data to be encrypted/decrypted
2499 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
977b6170 2500 */
026e93dc 2501static struct scatterlist *
b2c96de7 2502init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign)
026e93dc 2503{
b2c96de7 2504 unsigned int sg_len;
026e93dc
PS		 2505 struct scatterlist *sg;
2506 unsigned int i;
2507 unsigned int j;
b2c96de7
RS		 2508 unsigned int idx = 0;
2509 int skip;
2510
2511 sg_len = 1;
2512 for (i = 0; i < num_rqst; i++)
2513 sg_len += rqst[i].rq_nvec + rqst[i].rq_npages;
026e93dc
PS		 2514
2515 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
2516 if (!sg)
2517 return NULL;
2518
2519 sg_init_table(sg, sg_len);
b2c96de7
RS		 2520 for (i = 0; i < num_rqst; i++) {
2521 for (j = 0; j < rqst[i].rq_nvec; j++) {
2522 /*
2523 * The first rqst has a transform header where the
2524 * first 20 bytes are not part of the encrypted blob
2525 */
2526 skip = (i == 0) && (j == 0) ? 20 : 0;
2527 smb2_sg_set_buf(&sg[idx++],
2528 rqst[i].rq_iov[j].iov_base + skip,
2529 rqst[i].rq_iov[j].iov_len - skip);
2530 }
2531
2532 for (j = 0; j < rqst[i].rq_npages; j++) {
2533 unsigned int len, offset;
d5f07fb3 2534
b2c96de7
RS		 2535 rqst_page_get_length(&rqst[i], j, &len, &offset);
2536 sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset);
2537 }
026e93dc 2538 }
b2c96de7 2539 smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE);
026e93dc
PS		 2540 return sg;
2541}
2542
61cfac6f
PS		 2543static int
2544smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
2545{
2546 struct cifs_ses *ses;
2547 u8 *ses_enc_key;
2548
2549 spin_lock(&cifs_tcp_ses_lock);
2550 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
2551 if (ses->Suid != ses_id)
2552 continue;
2553 ses_enc_key = enc ? ses->smb3encryptionkey :
2554 ses->smb3decryptionkey;
2555 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
2556 spin_unlock(&cifs_tcp_ses_lock);
2557 return 0;
2558 }
2559 spin_unlock(&cifs_tcp_ses_lock);
2560
2561 return 1;
2562}
026e93dc 2563/*
c713c877
RS		 2564 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
2565 * iov[0] - transform header (associate data),
2566 * iov[1-N] - SMB2 header and pages - data to encrypt.
2567 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
026e93dc
PS		 2568 * untouched.
2569 */
2570static int
b2c96de7
RS		 2571crypt_message(struct TCP_Server_Info *server, int num_rqst,
2572 struct smb_rqst *rqst, int enc)
026e93dc
PS		 2573{
2574 struct smb2_transform_hdr *tr_hdr =
b2c96de7 2575 (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
1fc6ad2f 2576 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
026e93dc
PS		 2577 int rc = 0;
2578 struct scatterlist *sg;
2579 u8 sign[SMB2_SIGNATURE_SIZE] = {};
61cfac6f 2580 u8 key[SMB3_SIGN_KEY_SIZE];
026e93dc
PS		 2581 struct aead_request *req;
2582 char *iv;
2583 unsigned int iv_len;
a5186b85 2584 DECLARE_CRYPTO_WAIT(wait);
026e93dc
PS		 2585 struct crypto_aead *tfm;
2586 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2587
61cfac6f
PS		 2588 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
2589 if (rc) {
2590 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
2591 enc ? "en" : "de");
026e93dc
PS		 2592 return 0;
2593 }
2594
2595 rc = smb3_crypto_aead_allocate(server);
2596 if (rc) {
2597 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
2598 return rc;
2599 }
2600
2601 tfm = enc ? server->secmech.ccmaesencrypt :
2602 server->secmech.ccmaesdecrypt;
61cfac6f 2603 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
026e93dc
PS		 2604 if (rc) {
2605 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
2606 return rc;
2607 }
2608
2609 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
2610 if (rc) {
2611 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
2612 return rc;
2613 }
2614
2615 req = aead_request_alloc(tfm, GFP_KERNEL);
2616 if (!req) {
2617 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
2618 return -ENOMEM;
2619 }
2620
2621 if (!enc) {
2622 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
2623 crypt_len += SMB2_SIGNATURE_SIZE;
2624 }
2625
b2c96de7 2626 sg = init_sg(num_rqst, rqst, sign);
026e93dc 2627 if (!sg) {
517a6e43
CJ		 2628 cifs_dbg(VFS, "%s: Failed to init sg", __func__);
2629 rc = -ENOMEM;
026e93dc
PS		 2630 goto free_req;
2631 }
2632
2633 iv_len = crypto_aead_ivsize(tfm);
2634 iv = kzalloc(iv_len, GFP_KERNEL);
2635 if (!iv) {
2636 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
517a6e43 2637 rc = -ENOMEM;
026e93dc
PS		 2638 goto free_sg;
2639 }
2640 iv[0] = 3;
2641 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2642
2643 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
2644 aead_request_set_ad(req, assoc_data_len);
2645
2646 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
a5186b85 2647 crypto_req_done, &wait);
026e93dc 2648
a5186b85
GBY		 2649 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
2650 : crypto_aead_decrypt(req), &wait);
026e93dc
PS		 2651
2652 if (!rc && enc)
2653 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
2654
2655 kfree(iv);
2656free_sg:
2657 kfree(sg);
2658free_req:
2659 kfree(req);
2660 return rc;
2661}
2662
b2c96de7
RS		 2663void
2664smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
2665{
2666 int i, j;
2667
2668 for (i = 0; i < num_rqst; i++) {
2669 if (rqst[i].rq_pages) {
2670 for (j = rqst[i].rq_npages - 1; j >= 0; j--)
2671 put_page(rqst[i].rq_pages[j]);
2672 kfree(rqst[i].rq_pages);
2673 }
2674 }
2675}
2676
2677/*
2678 * This function will initialize new_rq and encrypt the content.
2679 * The first entry, new_rq[0], only contains a single iov which contains
2680 * a smb2_transform_hdr and is pre-allocated by the caller.
2681 * This function then populates new_rq[1+] with the content from olq_rq[0+].
2682 *
2683 * The end result is an array of smb_rqst structures where the first structure
2684 * only contains a single iov for the transform header which we then can pass
2685 * to crypt_message().
2686 *
2687 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
2688 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
2689 */
026e93dc 2690static int
b2c96de7
RS		 2691smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
2692 struct smb_rqst *new_rq, struct smb_rqst *old_rq)
026e93dc 2693{
026e93dc 2694 struct page **pages;
b2c96de7
RS		 2695 struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
2696 unsigned int npages;
2697 unsigned int orig_len = 0;
2698 int i, j;
026e93dc
PS		 2699 int rc = -ENOMEM;
2700
b2c96de7
RS		 2701 for (i = 1; i < num_rqst; i++) {
2702 npages = old_rq[i - 1].rq_npages;
2703 pages = kmalloc_array(npages, sizeof(struct page *),
2704 GFP_KERNEL);
2705 if (!pages)
2706 goto err_free;
2707
2708 new_rq[i].rq_pages = pages;
2709 new_rq[i].rq_npages = npages;
2710 new_rq[i].rq_offset = old_rq[i - 1].rq_offset;
2711 new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz;
2712 new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz;
2713 new_rq[i].rq_iov = old_rq[i - 1].rq_iov;
2714 new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec;
2715
2716 orig_len += smb_rqst_len(server, &old_rq[i - 1]);
2717
2718 for (j = 0; j < npages; j++) {
2719 pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2720 if (!pages[j])
2721 goto err_free;
2722 }
026e93dc 2723
b2c96de7
RS		 2724 /* copy pages form the old */
2725 for (j = 0; j < npages; j++) {
2726 char *dst, *src;
2727 unsigned int offset, len;
977b6170 2728
b2c96de7 2729 rqst_page_get_length(&new_rq[i], j, &len, &offset);
026e93dc 2730
b2c96de7
RS		 2731 dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset;
2732 src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset;
026e93dc 2733
b2c96de7
RS		 2734 memcpy(dst, src, len);
2735 kunmap(new_rq[i].rq_pages[j]);
2736 kunmap(old_rq[i - 1].rq_pages[j]);
2737 }
2738 }
35e2cc1b 2739
b2c96de7 2740 /* fill the 1st iov with a transform header */
977b6170 2741 fill_transform_hdr(tr_hdr, orig_len, old_rq);
d5f07fb3 2742
b2c96de7 2743 rc = crypt_message(server, num_rqst, new_rq, 1);
026e93dc
PS		 2744 cifs_dbg(FYI, "encrypt message returned %d", rc);
2745 if (rc)
b2c96de7 2746 goto err_free;
026e93dc
PS		 2747
2748 return rc;
2749
b2c96de7
RS		 2750err_free:
2751 smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
026e93dc
PS		 2752 return rc;
2753}
2754
4326ed2f
PS		 2755static int
2756smb3_is_transform_hdr(void *buf)
2757{
2758 struct smb2_transform_hdr *trhdr = buf;
2759
2760 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
2761}
2762
2763static int
2764decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
2765 unsigned int buf_data_size, struct page **pages,
2766 unsigned int npages, unsigned int page_data_size)
2767{
c713c877 2768 struct kvec iov[2];
4326ed2f 2769 struct smb_rqst rqst = {NULL};
4326ed2f
PS		 2770 int rc;
2771
c713c877
RS		 2772 iov[0].iov_base = buf;
2773 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
2774 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
2775 iov[1].iov_len = buf_data_size;
4326ed2f
PS		 2776
2777 rqst.rq_iov = iov;
c713c877 2778 rqst.rq_nvec = 2;
4326ed2f
PS		 2779 rqst.rq_pages = pages;
2780 rqst.rq_npages = npages;
2781 rqst.rq_pagesz = PAGE_SIZE;
2782 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
2783
b2c96de7 2784 rc = crypt_message(server, 1, &rqst, 0);
4326ed2f
PS		 2785 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
2786
2787 if (rc)
2788 return rc;
2789
c713c877 2790 memmove(buf, iov[1].iov_base, buf_data_size);
977b6170
RS		 2791
2792 server->total_read = buf_data_size + page_data_size;
4326ed2f
PS		 2793
2794 return rc;
2795}
2796
c42a6abe
PS		 2797static int
2798read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
2799 unsigned int npages, unsigned int len)
2800{
2801 int i;
2802 int length;
2803
2804 for (i = 0; i < npages; i++) {
2805 struct page *page = pages[i];
2806 size_t n;
2807
2808 n = len;
2809 if (len >= PAGE_SIZE) {
2810 /* enough data to fill the page */
2811 n = PAGE_SIZE;
2812 len -= n;
2813 } else {
2814 zero_user(page, len, PAGE_SIZE - len);
2815 len = 0;
2816 }
1dbe3466 2817 length = cifs_read_page_from_socket(server, page, 0, n);
c42a6abe
PS		 2818 if (length < 0)
2819 return length;
2820 server->total_read += length;
2821 }
2822
2823 return 0;
2824}
2825
2826static int
2827init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
2828 unsigned int cur_off, struct bio_vec **page_vec)
2829{
2830 struct bio_vec *bvec;
2831 int i;
2832
2833 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
2834 if (!bvec)
2835 return -ENOMEM;
2836
2837 for (i = 0; i < npages; i++) {
2838 bvec[i].bv_page = pages[i];
2839 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
2840 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
2841 data_size -= bvec[i].bv_len;
2842 }
2843
2844 if (data_size != 0) {
2845 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
2846 kfree(bvec);
2847 return -EIO;
2848 }
2849
2850 *page_vec = bvec;
2851 return 0;
2852}
2853
4326ed2f
PS		 2854static int
2855handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
2856 char *buf, unsigned int buf_len, struct page **pages,
2857 unsigned int npages, unsigned int page_data_size)
2858{
2859 unsigned int data_offset;
2860 unsigned int data_len;
c42a6abe
PS		 2861 unsigned int cur_off;
2862 unsigned int cur_page_idx;
2863 unsigned int pad_len;
4326ed2f 2864 struct cifs_readdata *rdata = mid->callback_data;
49f466bd 2865 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
4326ed2f
PS		 2866 struct bio_vec *bvec = NULL;
2867 struct iov_iter iter;
2868 struct kvec iov;
2869 int length;
74dcf418 2870 bool use_rdma_mr = false;
4326ed2f
PS		 2871
2872 if (shdr->Command != SMB2_READ) {
2873 cifs_dbg(VFS, "only big read responses are supported\n");
2874 return -ENOTSUPP;
2875 }
2876
511c54a2
PS		 2877 if (server->ops->is_session_expired &&
2878 server->ops->is_session_expired(buf)) {
2879 cifs_reconnect(server);
2880 wake_up(&server->response_q);
2881 return -1;
2882 }
2883
4326ed2f
PS		 2884 if (server->ops->is_status_pending &&
2885 server->ops->is_status_pending(buf, server, 0))
2886 return -1;
2887
2888 rdata->result = server->ops->map_error(buf, false);
2889 if (rdata->result != 0) {
2890 cifs_dbg(FYI, "%s: server returned error %d\n",
2891 __func__, rdata->result);
2892 dequeue_mid(mid, rdata->result);
2893 return 0;
2894 }
2895
1fc6ad2f 2896 data_offset = server->ops->read_data_offset(buf);
74dcf418
LL		 2897#ifdef CONFIG_CIFS_SMB_DIRECT
2898 use_rdma_mr = rdata->mr;
2899#endif
2900 data_len = server->ops->read_data_length(buf, use_rdma_mr);
4326ed2f
PS		 2901
2902 if (data_offset < server->vals->read_rsp_size) {
2903 /*
2904 * win2k8 sometimes sends an offset of 0 when the read
2905 * is beyond the EOF. Treat it as if the data starts just after
2906 * the header.
2907 */
2908 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
2909 __func__, data_offset);
2910 data_offset = server->vals->read_rsp_size;
2911 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
2912 /* data_offset is beyond the end of smallbuf */
2913 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
2914 __func__, data_offset);
2915 rdata->result = -EIO;
2916 dequeue_mid(mid, rdata->result);
2917 return 0;
2918 }
2919
c42a6abe
PS		 2920 pad_len = data_offset - server->vals->read_rsp_size;
2921
4326ed2f
PS		 2922 if (buf_len <= data_offset) {
2923 /* read response payload is in pages */
c42a6abe
PS		 2924 cur_page_idx = pad_len / PAGE_SIZE;
2925 cur_off = pad_len % PAGE_SIZE;
2926
2927 if (cur_page_idx != 0) {
2928 /* data offset is beyond the 1st page of response */
2929 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
2930 __func__, data_offset);
2931 rdata->result = -EIO;
2932 dequeue_mid(mid, rdata->result);
2933 return 0;
2934 }
2935
2936 if (data_len > page_data_size - pad_len) {
2937 /* data_len is corrupt -- discard frame */
2938 rdata->result = -EIO;
2939 dequeue_mid(mid, rdata->result);
2940 return 0;
2941 }
2942
2943 rdata->result = init_read_bvec(pages, npages, page_data_size,
2944 cur_off, &bvec);
2945 if (rdata->result != 0) {
2946 dequeue_mid(mid, rdata->result);
2947 return 0;
2948 }
2949
2950 iov_iter_bvec(&iter, WRITE | ITER_BVEC, bvec, npages, data_len);
4326ed2f
PS		 2951 } else if (buf_len >= data_offset + data_len) {
2952 /* read response payload is in buf */
2953 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
2954 iov.iov_base = buf + data_offset;
2955 iov.iov_len = data_len;
2956 iov_iter_kvec(&iter, WRITE | ITER_KVEC, &iov, 1, data_len);
2957 } else {
2958 /* read response payload cannot be in both buf and pages */
2959 WARN_ONCE(1, "buf can not contain only a part of read data");
2960 rdata->result = -EIO;
2961 dequeue_mid(mid, rdata->result);
2962 return 0;
2963 }
2964
2965 /* set up first iov for signature check */
2966 rdata->iov[0].iov_base = buf;
2967 rdata->iov[0].iov_len = 4;
2968 rdata->iov[1].iov_base = buf + 4;
2969 rdata->iov[1].iov_len = server->vals->read_rsp_size - 4;
2970 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
2971 rdata->iov[0].iov_base, server->vals->read_rsp_size);
2972
2973 length = rdata->copy_into_pages(server, rdata, &iter);
2974
2975 kfree(bvec);
2976
2977 if (length < 0)
2978 return length;
2979
2980 dequeue_mid(mid, false);
2981 return length;
2982}
2983
c42a6abe
PS		 2984static int
2985receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2986{
2987 char *buf = server->smallbuf;
2988 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2989 unsigned int npages;
2990 struct page **pages;
2991 unsigned int len;
1fc6ad2f 2992 unsigned int buflen = server->pdu_size;
c42a6abe
PS		 2993 int rc;
2994 int i = 0;
2995
1fc6ad2f 2996 len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
c42a6abe
PS		 2997 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
2998
2999 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
3000 if (rc < 0)
3001 return rc;
3002 server->total_read += rc;
3003
1fc6ad2f 3004 len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
93012bf9 3005 server->vals->read_rsp_size;
c42a6abe
PS		 3006 npages = DIV_ROUND_UP(len, PAGE_SIZE);
3007
3008 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
3009 if (!pages) {
3010 rc = -ENOMEM;
3011 goto discard_data;
3012 }
3013
3014 for (; i < npages; i++) {
3015 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
3016 if (!pages[i]) {
3017 rc = -ENOMEM;
3018 goto discard_data;
3019 }
3020 }
3021
3022 /* read read data into pages */
3023 rc = read_data_into_pages(server, pages, npages, len);
3024 if (rc)
3025 goto free_pages;
3026
350be257 3027 rc = cifs_discard_remaining_data(server);
c42a6abe
PS		 3028 if (rc)
3029 goto free_pages;
3030
1fc6ad2f 3031 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
c42a6abe
PS		 3032 pages, npages, len);
3033 if (rc)
3034 goto free_pages;
3035
3036 *mid = smb2_find_mid(server, buf);
3037 if (*mid == NULL)
3038 cifs_dbg(FYI, "mid not found\n");
3039 else {
3040 cifs_dbg(FYI, "mid found\n");
3041 (*mid)->decrypted = true;
3042 rc = handle_read_data(server, *mid, buf,
3043 server->vals->read_rsp_size,
3044 pages, npages, len);
3045 }
3046
3047free_pages:
3048 for (i = i - 1; i >= 0; i--)
3049 put_page(pages[i]);
3050 kfree(pages);
3051 return rc;
3052discard_data:
350be257 3053 cifs_discard_remaining_data(server);
c42a6abe
PS		 3054 goto free_pages;
3055}
3056
4326ed2f
PS		 3057static int
3058receive_encrypted_standard(struct TCP_Server_Info *server,
b24df3e3
RS		 3059 struct mid_q_entry **mids, char **bufs,
3060 int *num_mids)
4326ed2f 3061{
b24df3e3 3062 int ret, length;
4326ed2f 3063 char *buf = server->smallbuf;
b24df3e3
RS		 3064 char *tmpbuf;
3065 struct smb2_sync_hdr *shdr;
2e96467d 3066 unsigned int pdu_length = server->pdu_size;
4326ed2f
PS		 3067 unsigned int buf_size;
3068 struct mid_q_entry *mid_entry;
b24df3e3
RS		 3069 int next_is_large;
3070 char *next_buffer = NULL;
3071
3072 *num_mids = 0;
4326ed2f
PS		 3073
3074 /* switch to large buffer if too big for a small one */
1fc6ad2f 3075 if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
4326ed2f
PS		 3076 server->large_buf = true;
3077 memcpy(server->bigbuf, buf, server->total_read);
3078 buf = server->bigbuf;
3079 }
3080
3081 /* now read the rest */
3082 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
1fc6ad2f 3083 pdu_length - HEADER_SIZE(server) + 1);
4326ed2f
PS		 3084 if (length < 0)
3085 return length;
3086 server->total_read += length;
3087
1fc6ad2f 3088 buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
4326ed2f
PS		 3089 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
3090 if (length)
3091 return length;
3092
b24df3e3
RS		 3093 next_is_large = server->large_buf;
3094 one_more:
3095 shdr = (struct smb2_sync_hdr *)buf;
3096 if (shdr->NextCommand) {
3097 if (next_is_large) {
3098 tmpbuf = server->bigbuf;
3099 next_buffer = (char *)cifs_buf_get();
3100 } else {
3101 tmpbuf = server->smallbuf;
3102 next_buffer = (char *)cifs_small_buf_get();
3103 }
3104 memcpy(next_buffer,
3105 tmpbuf + le32_to_cpu(shdr->NextCommand),
3106 pdu_length - le32_to_cpu(shdr->NextCommand));
3107 }
3108
4326ed2f
PS		 3109 mid_entry = smb2_find_mid(server, buf);
3110 if (mid_entry == NULL)
3111 cifs_dbg(FYI, "mid not found\n");
3112 else {
3113 cifs_dbg(FYI, "mid found\n");
3114 mid_entry->decrypted = true;
b24df3e3 3115 mid_entry->resp_buf_size = server->pdu_size;
4326ed2f
PS		 3116 }
3117
b24df3e3
RS		 3118 if (*num_mids >= MAX_COMPOUND) {
3119 cifs_dbg(VFS, "too many PDUs in compound\n");
3120 return -1;
3121 }
3122 bufs[*num_mids] = buf;
3123 mids[(*num_mids)++] = mid_entry;
4326ed2f
PS		 3124
3125 if (mid_entry && mid_entry->handle)
b24df3e3
RS		 3126 ret = mid_entry->handle(server, mid_entry);
3127 else
3128 ret = cifs_handle_standard(server, mid_entry);
3129
3130 if (ret == 0 && shdr->NextCommand) {
3131 pdu_length -= le32_to_cpu(shdr->NextCommand);
3132 server->large_buf = next_is_large;
3133 if (next_is_large)
3134 server->bigbuf = next_buffer;
3135 else
3136 server->smallbuf = next_buffer;
3137
3138 buf += le32_to_cpu(shdr->NextCommand);
3139 goto one_more;
3140 }
4326ed2f 3141
b24df3e3 3142 return ret;
4326ed2f
PS		 3143}
3144
3145static int
b24df3e3
RS		 3146smb3_receive_transform(struct TCP_Server_Info *server,
3147 struct mid_q_entry **mids, char **bufs, int *num_mids)
4326ed2f
PS		 3148{
3149 char *buf = server->smallbuf;
2e96467d 3150 unsigned int pdu_length = server->pdu_size;
4326ed2f
PS		 3151 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
3152 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
3153
1fc6ad2f 3154 if (pdu_length < sizeof(struct smb2_transform_hdr) +
4326ed2f
PS		 3155 sizeof(struct smb2_sync_hdr)) {
3156 cifs_dbg(VFS, "Transform message is too small (%u)\n",
3157 pdu_length);
3158 cifs_reconnect(server);
3159 wake_up(&server->response_q);
3160 return -ECONNABORTED;
3161 }
3162
1fc6ad2f 3163 if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
4326ed2f
PS		 3164 cifs_dbg(VFS, "Transform message is broken\n");
3165 cifs_reconnect(server);
3166 wake_up(&server->response_q);
3167 return -ECONNABORTED;
3168 }
3169
b24df3e3 3170 /* TODO: add support for compounds containing READ. */
1fc6ad2f 3171 if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server))
b24df3e3 3172 return receive_encrypted_read(server, &mids[0]);
4326ed2f 3173
b24df3e3 3174 return receive_encrypted_standard(server, mids, bufs, num_mids);
4326ed2f
PS		 3175}
3176
3177int
3178smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
3179{
3180 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
3181
1fc6ad2f 3182 return handle_read_data(server, mid, buf, server->pdu_size,
4326ed2f
PS		 3183 NULL, 0, 0);
3184}
3185
8ce79ec3
RS		 3186static int
3187smb2_next_header(char *buf)
3188{
3189 struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf;
3190 struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
3191
3192 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM)
3193 return sizeof(struct smb2_transform_hdr) +
3194 le32_to_cpu(t_hdr->OriginalMessageSize);
3195
3196 return le32_to_cpu(hdr->NextCommand);
3197}
3198
53ef1016 3199struct smb_version_operations smb20_operations = {
027e8eec 3200 .compare_fids = smb2_compare_fids,
2dc7e1c0 3201 .setup_request = smb2_setup_request,
c95b8eed 3202 .setup_async_request = smb2_setup_async_request,
2dc7e1c0 3203 .check_receive = smb2_check_receive,
28ea5290
PS		 3204 .add_credits = smb2_add_credits,
3205 .set_credits = smb2_set_credits,
3206 .get_credits_field = smb2_get_credits_field,
3207 .get_credits = smb2_get_credits,
cb7e9eab 3208 .wait_mtu_credits = cifs_wait_mtu_credits,
2dc7e1c0 3209 .get_next_mid = smb2_get_next_mid,
09a4707e
PS		 3210 .read_data_offset = smb2_read_data_offset,
3211 .read_data_length = smb2_read_data_length,
3212 .map_error = map_smb2_to_linux_error,
093b2bda
PS		 3213 .find_mid = smb2_find_mid,
3214 .check_message = smb2_check_message,
3215 .dump_detail = smb2_dump_detail,
d60622eb
PS		 3216 .clear_stats = smb2_clear_stats,
3217 .print_stats = smb2_print_stats,
983c88a4 3218 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3219 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 3220 .downgrade_oplock = smb2_downgrade_oplock,
ec2e4523
PS		 3221 .need_neg = smb2_need_neg,
3222 .negotiate = smb2_negotiate,
3a3bab50
PS		 3223 .negotiate_wsize = smb2_negotiate_wsize,
3224 .negotiate_rsize = smb2_negotiate_rsize,
5478f9ba
PS		 3225 .sess_setup = SMB2_sess_setup,
3226 .logoff = SMB2_logoff,
faaf946a
PS		 3227 .tree_connect = SMB2_tcon,
3228 .tree_disconnect = SMB2_tdis,
34f62640 3229 .qfs_tcon = smb2_qfs_tcon,
2503a0db 3230 .is_path_accessible = smb2_is_path_accessible,
9094fad1
PS		 3231 .can_echo = smb2_can_echo,
3232 .echo = SMB2_echo,
be4cb9e3
PS		 3233 .query_path_info = smb2_query_path_info,
3234 .get_srv_inum = smb2_get_srv_inum,
b7546bc5 3235 .query_file_info = smb2_query_file_info,
c839ff24
PS		 3236 .set_path_size = smb2_set_path_size,
3237 .set_file_size = smb2_set_file_size,
1feeaac7 3238 .set_file_info = smb2_set_file_info,
64a5cfa6 3239 .set_compression = smb2_set_compression,
a0e73183
PS		 3240 .mkdir = smb2_mkdir,
3241 .mkdir_setinfo = smb2_mkdir_setinfo,
1a500f01 3242 .rmdir = smb2_rmdir,
cbe6f439 3243 .unlink = smb2_unlink,
35143eb5 3244 .rename = smb2_rename_path,
568798cc 3245 .create_hardlink = smb2_create_hardlink,
b42bf888 3246 .query_symlink = smb2_query_symlink,
5b23c97d
SP		 3247 .query_mf_symlink = smb3_query_mf_symlink,
3248 .create_mf_symlink = smb3_create_mf_symlink,
f0df737e
PS		 3249 .open = smb2_open_file,
3250 .set_fid = smb2_set_fid,
3251 .close = smb2_close_file,
7a5cfb19 3252 .flush = smb2_flush_file,
09a4707e 3253 .async_readv = smb2_async_readv,
33319141 3254 .async_writev = smb2_async_writev,
d8e05039 3255 .sync_read = smb2_sync_read,
009d3443 3256 .sync_write = smb2_sync_write,
d324f08d
PS		 3257 .query_dir_first = smb2_query_dir_first,
3258 .query_dir_next = smb2_query_dir_next,
3259 .close_dir = smb2_close_dir,
3260 .calc_smb_size = smb2_calc_size,
2e44b288 3261 .is_status_pending = smb2_is_status_pending,
511c54a2 3262 .is_session_expired = smb2_is_session_expired,
983c88a4 3263 .oplock_response = smb2_oplock_response,
6fc05c25 3264 .queryfs = smb2_queryfs,
f7ba7fe6
PS		 3265 .mand_lock = smb2_mand_lock,
3266 .mand_unlock_range = smb2_unlock_range,
b140799a 3267 .push_mand_locks = smb2_push_mandatory_locks,
b8c32dbb
PS		 3268 .get_lease_key = smb2_get_lease_key,
3269 .set_lease_key = smb2_set_lease_key,
3270 .new_lease_key = smb2_new_lease_key,
38107d45 3271 .calc_signature = smb2_calc_signature,
53ef1016
PS		 3272 .is_read_op = smb2_is_read_op,
3273 .set_oplock_level = smb2_set_oplock_level,
a41a28bd 3274 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 3275 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 3276 .copychunk_range = smb2_copychunk_range,
7f6c5008 3277 .wp_retry_size = smb2_wp_retry_size,
52755808 3278 .dir_needs_close = smb2_dir_needs_close,
9d49640a 3279 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3280 .select_sectype = smb2_select_sectype,
95907fea
RS		 3281#ifdef CONFIG_CIFS_XATTR
3282 .query_all_EAs = smb2_query_eas,
5517554e 3283 .set_EA = smb2_set_ea,
95907fea 3284#endif /* CIFS_XATTR */
2f1afe25
SP		 3285#ifdef CONFIG_CIFS_ACL
3286 .get_acl = get_smb2_acl,
3287 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 3288 .set_acl = set_smb2_acl,
2f1afe25 3289#endif /* CIFS_ACL */
8ce79ec3 3290 .next_header = smb2_next_header,
38107d45
SF		 3291};
3292
53ef1016
PS		 3293struct smb_version_operations smb21_operations = {
3294 .compare_fids = smb2_compare_fids,
3295 .setup_request = smb2_setup_request,
3296 .setup_async_request = smb2_setup_async_request,
3297 .check_receive = smb2_check_receive,
3298 .add_credits = smb2_add_credits,
3299 .set_credits = smb2_set_credits,
3300 .get_credits_field = smb2_get_credits_field,
3301 .get_credits = smb2_get_credits,
cb7e9eab 3302 .wait_mtu_credits = smb2_wait_mtu_credits,
53ef1016
PS		 3303 .get_next_mid = smb2_get_next_mid,
3304 .read_data_offset = smb2_read_data_offset,
3305 .read_data_length = smb2_read_data_length,
3306 .map_error = map_smb2_to_linux_error,
3307 .find_mid = smb2_find_mid,
3308 .check_message = smb2_check_message,
3309 .dump_detail = smb2_dump_detail,
3310 .clear_stats = smb2_clear_stats,
3311 .print_stats = smb2_print_stats,
3312 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3313 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 3314 .downgrade_oplock = smb2_downgrade_oplock,
53ef1016
PS		 3315 .need_neg = smb2_need_neg,
3316 .negotiate = smb2_negotiate,
3317 .negotiate_wsize = smb2_negotiate_wsize,
3318 .negotiate_rsize = smb2_negotiate_rsize,
3319 .sess_setup = SMB2_sess_setup,
3320 .logoff = SMB2_logoff,
3321 .tree_connect = SMB2_tcon,
3322 .tree_disconnect = SMB2_tdis,
34f62640 3323 .qfs_tcon = smb2_qfs_tcon,
53ef1016
PS		 3324 .is_path_accessible = smb2_is_path_accessible,
3325 .can_echo = smb2_can_echo,
3326 .echo = SMB2_echo,
3327 .query_path_info = smb2_query_path_info,
3328 .get_srv_inum = smb2_get_srv_inum,
3329 .query_file_info = smb2_query_file_info,
3330 .set_path_size = smb2_set_path_size,
3331 .set_file_size = smb2_set_file_size,
3332 .set_file_info = smb2_set_file_info,
64a5cfa6 3333 .set_compression = smb2_set_compression,
53ef1016
PS		 3334 .mkdir = smb2_mkdir,
3335 .mkdir_setinfo = smb2_mkdir_setinfo,
3336 .rmdir = smb2_rmdir,
3337 .unlink = smb2_unlink,
3338 .rename = smb2_rename_path,
3339 .create_hardlink = smb2_create_hardlink,
3340 .query_symlink = smb2_query_symlink,
c22870ea 3341 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 3342 .create_mf_symlink = smb3_create_mf_symlink,
53ef1016
PS		 3343 .open = smb2_open_file,
3344 .set_fid = smb2_set_fid,
3345 .close = smb2_close_file,
3346 .flush = smb2_flush_file,
3347 .async_readv = smb2_async_readv,
3348 .async_writev = smb2_async_writev,
3349 .sync_read = smb2_sync_read,
3350 .sync_write = smb2_sync_write,
3351 .query_dir_first = smb2_query_dir_first,
3352 .query_dir_next = smb2_query_dir_next,
3353 .close_dir = smb2_close_dir,
3354 .calc_smb_size = smb2_calc_size,
3355 .is_status_pending = smb2_is_status_pending,
511c54a2 3356 .is_session_expired = smb2_is_session_expired,
53ef1016
PS		 3357 .oplock_response = smb2_oplock_response,
3358 .queryfs = smb2_queryfs,
3359 .mand_lock = smb2_mand_lock,
3360 .mand_unlock_range = smb2_unlock_range,
3361 .push_mand_locks = smb2_push_mandatory_locks,
3362 .get_lease_key = smb2_get_lease_key,
3363 .set_lease_key = smb2_set_lease_key,
3364 .new_lease_key = smb2_new_lease_key,
3365 .calc_signature = smb2_calc_signature,
3366 .is_read_op = smb21_is_read_op,
3367 .set_oplock_level = smb21_set_oplock_level,
a41a28bd 3368 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 3369 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 3370 .copychunk_range = smb2_copychunk_range,
7f6c5008 3371 .wp_retry_size = smb2_wp_retry_size,
52755808 3372 .dir_needs_close = smb2_dir_needs_close,
834170c8 3373 .enum_snapshots = smb3_enum_snapshots,
9d49640a 3374 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3375 .select_sectype = smb2_select_sectype,
95907fea
RS		 3376#ifdef CONFIG_CIFS_XATTR
3377 .query_all_EAs = smb2_query_eas,
5517554e 3378 .set_EA = smb2_set_ea,
95907fea 3379#endif /* CIFS_XATTR */
2f1afe25
SP		 3380#ifdef CONFIG_CIFS_ACL
3381 .get_acl = get_smb2_acl,
3382 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 3383 .set_acl = set_smb2_acl,
2f1afe25 3384#endif /* CIFS_ACL */
8ce79ec3 3385 .next_header = smb2_next_header,
53ef1016 3386};
38107d45
SF		 3387
3388struct smb_version_operations smb30_operations = {
3389 .compare_fids = smb2_compare_fids,
3390 .setup_request = smb2_setup_request,
3391 .setup_async_request = smb2_setup_async_request,
3392 .check_receive = smb2_check_receive,
3393 .add_credits = smb2_add_credits,
3394 .set_credits = smb2_set_credits,
3395 .get_credits_field = smb2_get_credits_field,
3396 .get_credits = smb2_get_credits,
cb7e9eab 3397 .wait_mtu_credits = smb2_wait_mtu_credits,
38107d45
SF		 3398 .get_next_mid = smb2_get_next_mid,
3399 .read_data_offset = smb2_read_data_offset,
3400 .read_data_length = smb2_read_data_length,
3401 .map_error = map_smb2_to_linux_error,
3402 .find_mid = smb2_find_mid,
3403 .check_message = smb2_check_message,
3404 .dump_detail = smb2_dump_detail,
3405 .clear_stats = smb2_clear_stats,
3406 .print_stats = smb2_print_stats,
769ee6a4 3407 .dump_share_caps = smb2_dump_share_caps,
38107d45 3408 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3409 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 3410 .downgrade_oplock = smb2_downgrade_oplock,
38107d45
SF		 3411 .need_neg = smb2_need_neg,
3412 .negotiate = smb2_negotiate,
3413 .negotiate_wsize = smb2_negotiate_wsize,
3414 .negotiate_rsize = smb2_negotiate_rsize,
3415 .sess_setup = SMB2_sess_setup,
3416 .logoff = SMB2_logoff,
3417 .tree_connect = SMB2_tcon,
3418 .tree_disconnect = SMB2_tdis,
af6a12ea 3419 .qfs_tcon = smb3_qfs_tcon,
38107d45
SF		 3420 .is_path_accessible = smb2_is_path_accessible,
3421 .can_echo = smb2_can_echo,
3422 .echo = SMB2_echo,
3423 .query_path_info = smb2_query_path_info,
3424 .get_srv_inum = smb2_get_srv_inum,
3425 .query_file_info = smb2_query_file_info,
3426 .set_path_size = smb2_set_path_size,
3427 .set_file_size = smb2_set_file_size,
3428 .set_file_info = smb2_set_file_info,
64a5cfa6 3429 .set_compression = smb2_set_compression,
38107d45
SF		 3430 .mkdir = smb2_mkdir,
3431 .mkdir_setinfo = smb2_mkdir_setinfo,
3432 .rmdir = smb2_rmdir,
3433 .unlink = smb2_unlink,
3434 .rename = smb2_rename_path,
3435 .create_hardlink = smb2_create_hardlink,
b42bf888 3436 .query_symlink = smb2_query_symlink,
c22870ea 3437 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 3438 .create_mf_symlink = smb3_create_mf_symlink,
38107d45
SF		 3439 .open = smb2_open_file,
3440 .set_fid = smb2_set_fid,
3441 .close = smb2_close_file,
3442 .flush = smb2_flush_file,
3443 .async_readv = smb2_async_readv,
3444 .async_writev = smb2_async_writev,
3445 .sync_read = smb2_sync_read,
3446 .sync_write = smb2_sync_write,
3447 .query_dir_first = smb2_query_dir_first,
3448 .query_dir_next = smb2_query_dir_next,
3449 .close_dir = smb2_close_dir,
3450 .calc_smb_size = smb2_calc_size,
3451 .is_status_pending = smb2_is_status_pending,
511c54a2 3452 .is_session_expired = smb2_is_session_expired,
38107d45
SF		 3453 .oplock_response = smb2_oplock_response,
3454 .queryfs = smb2_queryfs,
3455 .mand_lock = smb2_mand_lock,
3456 .mand_unlock_range = smb2_unlock_range,
3457 .push_mand_locks = smb2_push_mandatory_locks,
3458 .get_lease_key = smb2_get_lease_key,
3459 .set_lease_key = smb2_set_lease_key,
3460 .new_lease_key = smb2_new_lease_key,
373512ec 3461 .generate_signingkey = generate_smb30signingkey,
38107d45 3462 .calc_signature = smb3_calc_signature,
b3152e2c 3463 .set_integrity = smb3_set_integrity,
53ef1016 3464 .is_read_op = smb21_is_read_op,
42873b0a 3465 .set_oplock_level = smb3_set_oplock_level,
f047390a
PS		 3466 .create_lease_buf = smb3_create_lease_buf,
3467 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 3468 .copychunk_range = smb2_copychunk_range,
ca9e7a1c 3469 .duplicate_extents = smb2_duplicate_extents,
ff1c038a 3470 .validate_negotiate = smb3_validate_negotiate,
7f6c5008 3471 .wp_retry_size = smb2_wp_retry_size,
52755808 3472 .dir_needs_close = smb2_dir_needs_close,
31742c5a 3473 .fallocate = smb3_fallocate,
834170c8 3474 .enum_snapshots = smb3_enum_snapshots,
026e93dc 3475 .init_transform_rq = smb3_init_transform_rq,
4326ed2f
PS		 3476 .is_transform_hdr = smb3_is_transform_hdr,
3477 .receive_transform = smb3_receive_transform,
9d49640a 3478 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3479 .select_sectype = smb2_select_sectype,
95907fea
RS		 3480#ifdef CONFIG_CIFS_XATTR
3481 .query_all_EAs = smb2_query_eas,
5517554e 3482 .set_EA = smb2_set_ea,
95907fea 3483#endif /* CIFS_XATTR */
2f1afe25
SP		 3484#ifdef CONFIG_CIFS_ACL
3485 .get_acl = get_smb2_acl,
3486 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 3487 .set_acl = set_smb2_acl,
2f1afe25 3488#endif /* CIFS_ACL */
8ce79ec3 3489 .next_header = smb2_next_header,
1080ef75
SF		 3490};
3491
aab1893d
SF		 3492struct smb_version_operations smb311_operations = {
3493 .compare_fids = smb2_compare_fids,
3494 .setup_request = smb2_setup_request,
3495 .setup_async_request = smb2_setup_async_request,
3496 .check_receive = smb2_check_receive,
3497 .add_credits = smb2_add_credits,
3498 .set_credits = smb2_set_credits,
3499 .get_credits_field = smb2_get_credits_field,
3500 .get_credits = smb2_get_credits,
3501 .wait_mtu_credits = smb2_wait_mtu_credits,
3502 .get_next_mid = smb2_get_next_mid,
3503 .read_data_offset = smb2_read_data_offset,
3504 .read_data_length = smb2_read_data_length,
3505 .map_error = map_smb2_to_linux_error,
3506 .find_mid = smb2_find_mid,
3507 .check_message = smb2_check_message,
3508 .dump_detail = smb2_dump_detail,
3509 .clear_stats = smb2_clear_stats,
3510 .print_stats = smb2_print_stats,
3511 .dump_share_caps = smb2_dump_share_caps,
3512 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3513 .handle_cancelled_mid = smb2_handle_cancelled_mid,
aab1893d
SF		 3514 .downgrade_oplock = smb2_downgrade_oplock,
3515 .need_neg = smb2_need_neg,
3516 .negotiate = smb2_negotiate,
3517 .negotiate_wsize = smb2_negotiate_wsize,
3518 .negotiate_rsize = smb2_negotiate_rsize,
3519 .sess_setup = SMB2_sess_setup,
3520 .logoff = SMB2_logoff,
3521 .tree_connect = SMB2_tcon,
3522 .tree_disconnect = SMB2_tdis,
3523 .qfs_tcon = smb3_qfs_tcon,
3524 .is_path_accessible = smb2_is_path_accessible,
3525 .can_echo = smb2_can_echo,
3526 .echo = SMB2_echo,
3527 .query_path_info = smb2_query_path_info,
3528 .get_srv_inum = smb2_get_srv_inum,
3529 .query_file_info = smb2_query_file_info,
3530 .set_path_size = smb2_set_path_size,
3531 .set_file_size = smb2_set_file_size,
3532 .set_file_info = smb2_set_file_info,
3533 .set_compression = smb2_set_compression,
3534 .mkdir = smb2_mkdir,
3535 .mkdir_setinfo = smb2_mkdir_setinfo,
bea851b8 3536 .posix_mkdir = smb311_posix_mkdir,
aab1893d
SF		 3537 .rmdir = smb2_rmdir,
3538 .unlink = smb2_unlink,
3539 .rename = smb2_rename_path,
3540 .create_hardlink = smb2_create_hardlink,
3541 .query_symlink = smb2_query_symlink,
3542 .query_mf_symlink = smb3_query_mf_symlink,
3543 .create_mf_symlink = smb3_create_mf_symlink,
3544 .open = smb2_open_file,
3545 .set_fid = smb2_set_fid,
3546 .close = smb2_close_file,
3547 .flush = smb2_flush_file,
3548 .async_readv = smb2_async_readv,
3549 .async_writev = smb2_async_writev,
3550 .sync_read = smb2_sync_read,
3551 .sync_write = smb2_sync_write,
3552 .query_dir_first = smb2_query_dir_first,
3553 .query_dir_next = smb2_query_dir_next,
3554 .close_dir = smb2_close_dir,
3555 .calc_smb_size = smb2_calc_size,
3556 .is_status_pending = smb2_is_status_pending,
511c54a2 3557 .is_session_expired = smb2_is_session_expired,
aab1893d 3558 .oplock_response = smb2_oplock_response,
2d304217 3559 .queryfs = smb311_queryfs,
aab1893d
SF		 3560 .mand_lock = smb2_mand_lock,
3561 .mand_unlock_range = smb2_unlock_range,
3562 .push_mand_locks = smb2_push_mandatory_locks,
3563 .get_lease_key = smb2_get_lease_key,
3564 .set_lease_key = smb2_set_lease_key,
3565 .new_lease_key = smb2_new_lease_key,
373512ec 3566 .generate_signingkey = generate_smb311signingkey,
aab1893d 3567 .calc_signature = smb3_calc_signature,
b3152e2c 3568 .set_integrity = smb3_set_integrity,
aab1893d
SF		 3569 .is_read_op = smb21_is_read_op,
3570 .set_oplock_level = smb3_set_oplock_level,
3571 .create_lease_buf = smb3_create_lease_buf,
3572 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 3573 .copychunk_range = smb2_copychunk_range,
02b16665 3574 .duplicate_extents = smb2_duplicate_extents,
aab1893d
SF		 3575/* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
3576 .wp_retry_size = smb2_wp_retry_size,
3577 .dir_needs_close = smb2_dir_needs_close,
3578 .fallocate = smb3_fallocate,
834170c8 3579 .enum_snapshots = smb3_enum_snapshots,
026e93dc 3580 .init_transform_rq = smb3_init_transform_rq,
4326ed2f
PS		 3581 .is_transform_hdr = smb3_is_transform_hdr,
3582 .receive_transform = smb3_receive_transform,
9d49640a 3583 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3584 .select_sectype = smb2_select_sectype,
95907fea
RS		 3585#ifdef CONFIG_CIFS_XATTR
3586 .query_all_EAs = smb2_query_eas,
5517554e 3587 .set_EA = smb2_set_ea,
95907fea 3588#endif /* CIFS_XATTR */
8ce79ec3 3589 .next_header = smb2_next_header,
aab1893d 3590};
aab1893d 3591
dd446b16
SF		 3592struct smb_version_values smb20_values = {
3593 .version_string = SMB20_VERSION_STRING,
3594 .protocol_id = SMB20_PROT_ID,
3595 .req_capabilities = 0, /* MBZ */
3596 .large_lock_type = 0,
3597 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3598 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3599 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3600 .header_size = sizeof(struct smb2_sync_hdr),
3601 .header_preamble_size = 0,
dd446b16
SF		 3602 .max_header_size = MAX_SMB2_HDR_SIZE,
3603 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3604 .lock_cmd = SMB2_LOCK,
3605 .cap_unix = 0,
3606 .cap_nt_find = SMB2_NT_FIND,
3607 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3608 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3609 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 3610 .create_lease_size = sizeof(struct create_lease),
dd446b16
SF		 3611};
3612
1080ef75
SF		 3613struct smb_version_values smb21_values = {
3614 .version_string = SMB21_VERSION_STRING,
e4aa25e7
SF		 3615 .protocol_id = SMB21_PROT_ID,
3616 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
3617 .large_lock_type = 0,
3618 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3619 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3620 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3621 .header_size = sizeof(struct smb2_sync_hdr),
3622 .header_preamble_size = 0,
e4aa25e7
SF		 3623 .max_header_size = MAX_SMB2_HDR_SIZE,
3624 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3625 .lock_cmd = SMB2_LOCK,
3626 .cap_unix = 0,
3627 .cap_nt_find = SMB2_NT_FIND,
3628 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3629 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3630 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 3631 .create_lease_size = sizeof(struct create_lease),
e4aa25e7
SF		 3632};
3633
9764c02f
SF		 3634struct smb_version_values smb3any_values = {
3635 .version_string = SMB3ANY_VERSION_STRING,
3636 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3637 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3638 .large_lock_type = 0,
3639 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3640 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3641 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3642 .header_size = sizeof(struct smb2_sync_hdr),
3643 .header_preamble_size = 0,
9764c02f
SF		 3644 .max_header_size = MAX_SMB2_HDR_SIZE,
3645 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3646 .lock_cmd = SMB2_LOCK,
3647 .cap_unix = 0,
3648 .cap_nt_find = SMB2_NT_FIND,
3649 .cap_large_files = SMB2_LARGE_FILES,
3650 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3651 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3652 .create_lease_size = sizeof(struct create_lease_v2),
3653};
3654
3655struct smb_version_values smbdefault_values = {
3656 .version_string = SMBDEFAULT_VERSION_STRING,
3657 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3658 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3659 .large_lock_type = 0,
3660 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3661 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3662 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3663 .header_size = sizeof(struct smb2_sync_hdr),
3664 .header_preamble_size = 0,
9764c02f
SF		 3665 .max_header_size = MAX_SMB2_HDR_SIZE,
3666 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3667 .lock_cmd = SMB2_LOCK,
3668 .cap_unix = 0,
3669 .cap_nt_find = SMB2_NT_FIND,
3670 .cap_large_files = SMB2_LARGE_FILES,
3671 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3672 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3673 .create_lease_size = sizeof(struct create_lease_v2),
3674};
3675
e4aa25e7
SF		 3676struct smb_version_values smb30_values = {
3677 .version_string = SMB30_VERSION_STRING,
3678 .protocol_id = SMB30_PROT_ID,
373512ec 3679 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
027e8eec
PS		 3680 .large_lock_type = 0,
3681 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3682 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3683 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3684 .header_size = sizeof(struct smb2_sync_hdr),
3685 .header_preamble_size = 0,
093b2bda 3686 .max_header_size = MAX_SMB2_HDR_SIZE,
09a4707e 3687 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2dc7e1c0 3688 .lock_cmd = SMB2_LOCK,
29e20f9c
PS		 3689 .cap_unix = 0,
3690 .cap_nt_find = SMB2_NT_FIND,
3691 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3692 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3693 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 3694 .create_lease_size = sizeof(struct create_lease_v2),
1080ef75 3695};
20b6d8b4
SF		 3696
3697struct smb_version_values smb302_values = {
3698 .version_string = SMB302_VERSION_STRING,
3699 .protocol_id = SMB302_PROT_ID,
373512ec 3700 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
20b6d8b4
SF		 3701 .large_lock_type = 0,
3702 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3703 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3704 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3705 .header_size = sizeof(struct smb2_sync_hdr),
3706 .header_preamble_size = 0,
20b6d8b4
SF		 3707 .max_header_size = MAX_SMB2_HDR_SIZE,
3708 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3709 .lock_cmd = SMB2_LOCK,
3710 .cap_unix = 0,
3711 .cap_nt_find = SMB2_NT_FIND,
3712 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3713 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3714 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 3715 .create_lease_size = sizeof(struct create_lease_v2),
20b6d8b4 3716};
5f7fbf73 3717
5f7fbf73
SF		 3718struct smb_version_values smb311_values = {
3719 .version_string = SMB311_VERSION_STRING,
3720 .protocol_id = SMB311_PROT_ID,
1955880b 3721 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
5f7fbf73
SF		 3722 .large_lock_type = 0,
3723 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3724 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3725 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3726 .header_size = sizeof(struct smb2_sync_hdr),
3727 .header_preamble_size = 0,
5f7fbf73
SF		 3728 .max_header_size = MAX_SMB2_HDR_SIZE,
3729 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3730 .lock_cmd = SMB2_LOCK,
3731 .cap_unix = 0,
3732 .cap_nt_find = SMB2_NT_FIND,
3733 .cap_large_files = SMB2_LARGE_FILES,
3734 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3735 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3736 .create_lease_size = sizeof(struct create_lease_v2),
3737};
Linux 6.x block layer and io_uring tree(s)