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Merge tag 'acpi-4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
[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;
5e19697b
SF		 633 if (backup_cred(cifs_sb))
634 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
635 else
636 oparms.create_options = 0;
064f6047 637 oparms.fid = &fid;
9cbc0b73 638 oparms.reconnect = false;
064f6047 639
9d874c36 640 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2503a0db
PS		 641 if (rc) {
642 kfree(utf16_path);
643 return rc;
644 }
645
064f6047 646 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2503a0db
PS		 647 kfree(utf16_path);
648 return rc;
649}
650
be4cb9e3
PS		 651static int
652smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
653 struct cifs_sb_info *cifs_sb, const char *full_path,
654 u64 *uniqueid, FILE_ALL_INFO *data)
655{
656 *uniqueid = le64_to_cpu(data->IndexNumber);
657 return 0;
658}
659
b7546bc5
PS		 660static int
661smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
662 struct cifs_fid *fid, FILE_ALL_INFO *data)
663{
664 int rc;
665 struct smb2_file_all_info *smb2_data;
666
1bbe4997 667 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
b7546bc5
PS		 668 GFP_KERNEL);
669 if (smb2_data == NULL)
670 return -ENOMEM;
671
672 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
673 smb2_data);
674 if (!rc)
675 move_smb2_info_to_cifs(data, smb2_data);
676 kfree(smb2_data);
677 return rc;
678}
679
1368f155 680#ifdef CONFIG_CIFS_XATTR
95907fea
RS		 681static ssize_t
682move_smb2_ea_to_cifs(char *dst, size_t dst_size,
683 struct smb2_file_full_ea_info *src, size_t src_size,
684 const unsigned char *ea_name)
685{
686 int rc = 0;
687 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
688 char *name, *value;
689 size_t name_len, value_len, user_name_len;
690
691 while (src_size > 0) {
692 name = &src->ea_data[0];
693 name_len = (size_t)src->ea_name_length;
694 value = &src->ea_data[src->ea_name_length + 1];
695 value_len = (size_t)le16_to_cpu(src->ea_value_length);
696
697 if (name_len == 0) {
698 break;
699 }
700
701 if (src_size < 8 + name_len + 1 + value_len) {
702 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
703 rc = -EIO;
704 goto out;
705 }
706
707 if (ea_name) {
708 if (ea_name_len == name_len &&
709 memcmp(ea_name, name, name_len) == 0) {
710 rc = value_len;
711 if (dst_size == 0)
712 goto out;
713 if (dst_size < value_len) {
714 rc = -ERANGE;
715 goto out;
716 }
717 memcpy(dst, value, value_len);
718 goto out;
719 }
720 } else {
721 /* 'user.' plus a terminating null */
722 user_name_len = 5 + 1 + name_len;
723
724 rc += user_name_len;
725
726 if (dst_size >= user_name_len) {
727 dst_size -= user_name_len;
728 memcpy(dst, "user.", 5);
729 dst += 5;
730 memcpy(dst, src->ea_data, name_len);
731 dst += name_len;
732 *dst = 0;
733 ++dst;
734 } else if (dst_size == 0) {
735 /* skip copy - calc size only */
736 } else {
737 /* stop before overrun buffer */
738 rc = -ERANGE;
739 break;
740 }
741 }
742
743 if (!src->next_entry_offset)
744 break;
745
746 if (src_size < le32_to_cpu(src->next_entry_offset)) {
747 /* stop before overrun buffer */
748 rc = -ERANGE;
749 break;
750 }
751 src_size -= le32_to_cpu(src->next_entry_offset);
752 src = (void *)((char *)src +
753 le32_to_cpu(src->next_entry_offset));
754 }
755
756 /* didn't find the named attribute */
757 if (ea_name)
758 rc = -ENODATA;
759
760out:
761 return (ssize_t)rc;
762}
763
764static ssize_t
765smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
766 const unsigned char *path, const unsigned char *ea_name,
767 char *ea_data, size_t buf_size,
768 struct cifs_sb_info *cifs_sb)
769{
770 int rc;
771 __le16 *utf16_path;
772 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
773 struct cifs_open_parms oparms;
774 struct cifs_fid fid;
775 struct smb2_file_full_ea_info *smb2_data;
7cb3def4 776 int ea_buf_size = SMB2_MIN_EA_BUF;
95907fea
RS		 777
778 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
779 if (!utf16_path)
780 return -ENOMEM;
781
782 oparms.tcon = tcon;
783 oparms.desired_access = FILE_READ_EA;
784 oparms.disposition = FILE_OPEN;
5e19697b
SF		 785 if (backup_cred(cifs_sb))
786 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
787 else
788 oparms.create_options = 0;
95907fea
RS		 789 oparms.fid = &fid;
790 oparms.reconnect = false;
791
9d874c36 792 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
95907fea
RS		 793 kfree(utf16_path);
794 if (rc) {
795 cifs_dbg(FYI, "open failed rc=%d\n", rc);
796 return rc;
797 }
798
7cb3def4
RS		 799 while (1) {
800 smb2_data = kzalloc(ea_buf_size, GFP_KERNEL);
801 if (smb2_data == NULL) {
802 SMB2_close(xid, tcon, fid.persistent_fid,
803 fid.volatile_fid);
804 return -ENOMEM;
805 }
806
807 rc = SMB2_query_eas(xid, tcon, fid.persistent_fid,
808 fid.volatile_fid,
809 ea_buf_size, smb2_data);
810
811 if (rc != -E2BIG)
812 break;
813
814 kfree(smb2_data);
815 ea_buf_size <<= 1;
816
817 if (ea_buf_size > SMB2_MAX_EA_BUF) {
818 cifs_dbg(VFS, "EA size is too large\n");
819 SMB2_close(xid, tcon, fid.persistent_fid,
820 fid.volatile_fid);
821 return -ENOMEM;
822 }
95907fea
RS		 823 }
824
95907fea
RS		 825 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
826
ae2cd7fb
PA		 827 /*
828 * If ea_name is NULL (listxattr) and there are no EAs, return 0 as it's
829 * not an error. Otherwise, the specified ea_name was not found.
830 */
95907fea
RS		 831 if (!rc)
832 rc = move_smb2_ea_to_cifs(ea_data, buf_size, smb2_data,
833 SMB2_MAX_EA_BUF, ea_name);
ae2cd7fb
PA		 834 else if (!ea_name && rc == -ENODATA)
835 rc = 0;
95907fea
RS		 836
837 kfree(smb2_data);
838 return rc;
839}
840
5517554e
RS		 841
842static int
843smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
844 const char *path, const char *ea_name, const void *ea_value,
845 const __u16 ea_value_len, const struct nls_table *nls_codepage,
846 struct cifs_sb_info *cifs_sb)
847{
848 int rc;
849 __le16 *utf16_path;
850 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
851 struct cifs_open_parms oparms;
852 struct cifs_fid fid;
853 struct smb2_file_full_ea_info *ea;
854 int ea_name_len = strlen(ea_name);
855 int len;
856
857 if (ea_name_len > 255)
858 return -EINVAL;
859
860 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
861 if (!utf16_path)
862 return -ENOMEM;
863
864 oparms.tcon = tcon;
865 oparms.desired_access = FILE_WRITE_EA;
866 oparms.disposition = FILE_OPEN;
5e19697b
SF		 867 if (backup_cred(cifs_sb))
868 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
869 else
870 oparms.create_options = 0;
5517554e
RS		 871 oparms.fid = &fid;
872 oparms.reconnect = false;
873
9d874c36 874 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
5517554e
RS		 875 kfree(utf16_path);
876 if (rc) {
877 cifs_dbg(FYI, "open failed rc=%d\n", rc);
878 return rc;
879 }
880
881 len = sizeof(ea) + ea_name_len + ea_value_len + 1;
882 ea = kzalloc(len, GFP_KERNEL);
883 if (ea == NULL) {
884 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
885 return -ENOMEM;
886 }
887
888 ea->ea_name_length = ea_name_len;
889 ea->ea_value_length = cpu_to_le16(ea_value_len);
890 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
891 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
892
893 rc = SMB2_set_ea(xid, tcon, fid.persistent_fid, fid.volatile_fid, ea,
894 len);
6aa0c114
PA		 895 kfree(ea);
896
5517554e
RS		 897 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
898
899 return rc;
900}
1368f155 901#endif
5517554e 902
9094fad1
PS		 903static bool
904smb2_can_echo(struct TCP_Server_Info *server)
905{
906 return server->echoes;
907}
908
d60622eb
PS		 909static void
910smb2_clear_stats(struct cifs_tcon *tcon)
911{
d60622eb
PS		 912 int i;
913 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
914 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
915 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
916 }
d60622eb
PS		 917}
918
769ee6a4
SF		 919static void
920smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
921{
922 seq_puts(m, "\n\tShare Capabilities:");
923 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
924 seq_puts(m, " DFS,");
925 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
926 seq_puts(m, " CONTINUOUS AVAILABILITY,");
927 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
928 seq_puts(m, " SCALEOUT,");
929 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
930 seq_puts(m, " CLUSTER,");
931 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
932 seq_puts(m, " ASYMMETRIC,");
933 if (tcon->capabilities == 0)
934 seq_puts(m, " None");
af6a12ea
SF		 935 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
936 seq_puts(m, " Aligned,");
937 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
938 seq_puts(m, " Partition Aligned,");
939 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
940 seq_puts(m, " SSD,");
941 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
942 seq_puts(m, " TRIM-support,");
943
769ee6a4 944 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
e0386e44 945 seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
af6a12ea
SF		 946 if (tcon->perf_sector_size)
947 seq_printf(m, "\tOptimal sector size: 0x%x",
948 tcon->perf_sector_size);
e0386e44 949 seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
769ee6a4
SF		 950}
951
d60622eb
PS		 952static void
953smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
954{
d60622eb
PS		 955 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
956 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
1995d28f
SF		 957
958 /*
959 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
960 * totals (requests sent) since those SMBs are per-session not per tcon
961 */
52ce1ac4
SF		 962 seq_printf(m, "\nBytes read: %llu Bytes written: %llu",
963 (long long)(tcon->bytes_read),
964 (long long)(tcon->bytes_written));
1995d28f 965 seq_printf(m, "\nTreeConnects: %d total %d failed",
d60622eb
PS		 966 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
967 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
1995d28f 968 seq_printf(m, "\nTreeDisconnects: %d total %d failed",
d60622eb
PS		 969 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
970 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
1995d28f 971 seq_printf(m, "\nCreates: %d total %d failed",
d60622eb
PS		 972 atomic_read(&sent[SMB2_CREATE_HE]),
973 atomic_read(&failed[SMB2_CREATE_HE]));
1995d28f 974 seq_printf(m, "\nCloses: %d total %d failed",
d60622eb
PS		 975 atomic_read(&sent[SMB2_CLOSE_HE]),
976 atomic_read(&failed[SMB2_CLOSE_HE]));
1995d28f 977 seq_printf(m, "\nFlushes: %d total %d failed",
d60622eb
PS		 978 atomic_read(&sent[SMB2_FLUSH_HE]),
979 atomic_read(&failed[SMB2_FLUSH_HE]));
1995d28f 980 seq_printf(m, "\nReads: %d total %d failed",
d60622eb
PS		 981 atomic_read(&sent[SMB2_READ_HE]),
982 atomic_read(&failed[SMB2_READ_HE]));
1995d28f 983 seq_printf(m, "\nWrites: %d total %d failed",
d60622eb
PS		 984 atomic_read(&sent[SMB2_WRITE_HE]),
985 atomic_read(&failed[SMB2_WRITE_HE]));
1995d28f 986 seq_printf(m, "\nLocks: %d total %d failed",
d60622eb
PS		 987 atomic_read(&sent[SMB2_LOCK_HE]),
988 atomic_read(&failed[SMB2_LOCK_HE]));
1995d28f 989 seq_printf(m, "\nIOCTLs: %d total %d failed",
d60622eb
PS		 990 atomic_read(&sent[SMB2_IOCTL_HE]),
991 atomic_read(&failed[SMB2_IOCTL_HE]));
1995d28f 992 seq_printf(m, "\nQueryDirectories: %d total %d failed",
d60622eb
PS		 993 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
994 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
1995d28f 995 seq_printf(m, "\nChangeNotifies: %d total %d failed",
d60622eb
PS		 996 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
997 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
1995d28f 998 seq_printf(m, "\nQueryInfos: %d total %d failed",
d60622eb
PS		 999 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
1000 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
1995d28f 1001 seq_printf(m, "\nSetInfos: %d total %d failed",
d60622eb
PS		 1002 atomic_read(&sent[SMB2_SET_INFO_HE]),
1003 atomic_read(&failed[SMB2_SET_INFO_HE]));
1004 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
1005 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
1006 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
d60622eb
PS		 1007}
1008
f0df737e
PS		 1009static void
1010smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
1011{
2b0143b5 1012 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
53ef1016
PS		 1013 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
1014
f0df737e
PS		 1015 cfile->fid.persistent_fid = fid->persistent_fid;
1016 cfile->fid.volatile_fid = fid->volatile_fid;
42873b0a
PS		 1017 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
1018 &fid->purge_cache);
18cceb6a 1019 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
94f87371 1020 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
f0df737e
PS		 1021}
1022
760ad0ca 1023static void
f0df737e
PS		 1024smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
1025 struct cifs_fid *fid)
1026{
760ad0ca 1027 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
f0df737e
PS		 1028}
1029
41c1358e
SF		 1030static int
1031SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
1032 u64 persistent_fid, u64 volatile_fid,
1033 struct copychunk_ioctl *pcchunk)
1034{
1035 int rc;
1036 unsigned int ret_data_len;
1037 struct resume_key_req *res_key;
1038
1039 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
1040 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
1041 NULL, 0 /* no input */,
1042 (char **)&res_key, &ret_data_len);
1043
1044 if (rc) {
1045 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
1046 goto req_res_key_exit;
1047 }
1048 if (ret_data_len < sizeof(struct resume_key_req)) {
1049 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
1050 rc = -EINVAL;
1051 goto req_res_key_exit;
1052 }
1053 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
1054
1055req_res_key_exit:
1056 kfree(res_key);
1057 return rc;
1058}
1059
620d8745 1060static ssize_t
312bbc59 1061smb2_copychunk_range(const unsigned int xid,
41c1358e
SF		 1062 struct cifsFileInfo *srcfile,
1063 struct cifsFileInfo *trgtfile, u64 src_off,
1064 u64 len, u64 dest_off)
1065{
1066 int rc;
1067 unsigned int ret_data_len;
1068 struct copychunk_ioctl *pcchunk;
9bf0c9cd
SF		 1069 struct copychunk_ioctl_rsp *retbuf = NULL;
1070 struct cifs_tcon *tcon;
1071 int chunks_copied = 0;
1072 bool chunk_sizes_updated = false;
620d8745 1073 ssize_t bytes_written, total_bytes_written = 0;
41c1358e
SF		 1074
1075 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
1076
1077 if (pcchunk == NULL)
1078 return -ENOMEM;
1079
312bbc59 1080 cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
41c1358e
SF		 1081 /* Request a key from the server to identify the source of the copy */
1082 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
1083 srcfile->fid.persistent_fid,
1084 srcfile->fid.volatile_fid, pcchunk);
1085
1086 /* Note: request_res_key sets res_key null only if rc !=0 */
1087 if (rc)
9bf0c9cd 1088 goto cchunk_out;
41c1358e
SF		 1089
1090 /* For now array only one chunk long, will make more flexible later */
bc09d141 1091 pcchunk->ChunkCount = cpu_to_le32(1);
41c1358e 1092 pcchunk->Reserved = 0;
41c1358e
SF		 1093 pcchunk->Reserved2 = 0;
1094
9bf0c9cd 1095 tcon = tlink_tcon(trgtfile->tlink);
41c1358e 1096
9bf0c9cd
SF		 1097 while (len > 0) {
1098 pcchunk->SourceOffset = cpu_to_le64(src_off);
1099 pcchunk->TargetOffset = cpu_to_le64(dest_off);
1100 pcchunk->Length =
1101 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
41c1358e 1102
9bf0c9cd
SF		 1103 /* Request server copy to target from src identified by key */
1104 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1105 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
63a83b86 1106 true /* is_fsctl */, (char *)pcchunk,
9bf0c9cd
SF		 1107 sizeof(struct copychunk_ioctl), (char **)&retbuf,
1108 &ret_data_len);
1109 if (rc == 0) {
1110 if (ret_data_len !=
1111 sizeof(struct copychunk_ioctl_rsp)) {
1112 cifs_dbg(VFS, "invalid cchunk response size\n");
1113 rc = -EIO;
1114 goto cchunk_out;
1115 }
1116 if (retbuf->TotalBytesWritten == 0) {
1117 cifs_dbg(FYI, "no bytes copied\n");
1118 rc = -EIO;
1119 goto cchunk_out;
1120 }
1121 /*
1122 * Check if server claimed to write more than we asked
1123 */
1124 if (le32_to_cpu(retbuf->TotalBytesWritten) >
1125 le32_to_cpu(pcchunk->Length)) {
1126 cifs_dbg(VFS, "invalid copy chunk response\n");
1127 rc = -EIO;
1128 goto cchunk_out;
1129 }
1130 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
1131 cifs_dbg(VFS, "invalid num chunks written\n");
1132 rc = -EIO;
1133 goto cchunk_out;
1134 }
1135 chunks_copied++;
1136
620d8745
SP		 1137 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
1138 src_off += bytes_written;
1139 dest_off += bytes_written;
1140 len -= bytes_written;
1141 total_bytes_written += bytes_written;
9bf0c9cd 1142
620d8745 1143 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
9bf0c9cd
SF		 1144 le32_to_cpu(retbuf->ChunksWritten),
1145 le32_to_cpu(retbuf->ChunkBytesWritten),
620d8745 1146 bytes_written);
9bf0c9cd
SF		 1147 } else if (rc == -EINVAL) {
1148 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
1149 goto cchunk_out;
1150
1151 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1152 le32_to_cpu(retbuf->ChunksWritten),
1153 le32_to_cpu(retbuf->ChunkBytesWritten),
1154 le32_to_cpu(retbuf->TotalBytesWritten));
1155
1156 /*
1157 * Check if this is the first request using these sizes,
1158 * (ie check if copy succeed once with original sizes
1159 * and check if the server gave us different sizes after
1160 * we already updated max sizes on previous request).
1161 * if not then why is the server returning an error now
1162 */
1163 if ((chunks_copied != 0) || chunk_sizes_updated)
1164 goto cchunk_out;
1165
1166 /* Check that server is not asking us to grow size */
1167 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
1168 tcon->max_bytes_chunk)
1169 tcon->max_bytes_chunk =
1170 le32_to_cpu(retbuf->ChunkBytesWritten);
1171 else
1172 goto cchunk_out; /* server gave us bogus size */
1173
1174 /* No need to change MaxChunks since already set to 1 */
1175 chunk_sizes_updated = true;
2477bc58
SP		 1176 } else
1177 goto cchunk_out;
9bf0c9cd 1178 }
41c1358e 1179
9bf0c9cd 1180cchunk_out:
41c1358e 1181 kfree(pcchunk);
24df1483 1182 kfree(retbuf);
620d8745
SP		 1183 if (rc)
1184 return rc;
1185 else
1186 return total_bytes_written;
41c1358e
SF		 1187}
1188
7a5cfb19
PS		 1189static int
1190smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1191 struct cifs_fid *fid)
1192{
1193 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1194}
1195
09a4707e
PS		 1196static unsigned int
1197smb2_read_data_offset(char *buf)
1198{
1199 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1200 return rsp->DataOffset;
1201}
1202
1203static unsigned int
74dcf418 1204smb2_read_data_length(char *buf, bool in_remaining)
09a4707e
PS		 1205{
1206 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
74dcf418
LL		 1207
1208 if (in_remaining)
1209 return le32_to_cpu(rsp->DataRemaining);
1210
09a4707e
PS		 1211 return le32_to_cpu(rsp->DataLength);
1212}
1213
d8e05039
PS		 1214
1215static int
db8b631d 1216smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
d8e05039
PS		 1217 struct cifs_io_parms *parms, unsigned int *bytes_read,
1218 char **buf, int *buf_type)
1219{
db8b631d
SF		 1220 parms->persistent_fid = pfid->persistent_fid;
1221 parms->volatile_fid = pfid->volatile_fid;
d8e05039
PS		 1222 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1223}
1224
009d3443 1225static int
db8b631d 1226smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
009d3443
PS		 1227 struct cifs_io_parms *parms, unsigned int *written,
1228 struct kvec *iov, unsigned long nr_segs)
1229{
1230
db8b631d
SF		 1231 parms->persistent_fid = pfid->persistent_fid;
1232 parms->volatile_fid = pfid->volatile_fid;
009d3443
PS		 1233 return SMB2_write(xid, parms, written, iov, nr_segs);
1234}
1235
d43cc793
SF		 1236/* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1237static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1238 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1239{
1240 struct cifsInodeInfo *cifsi;
1241 int rc;
1242
1243 cifsi = CIFS_I(inode);
1244
1245 /* if file already sparse don't bother setting sparse again */
1246 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1247 return true; /* already sparse */
1248
1249 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1250 return true; /* already not sparse */
1251
1252 /*
1253 * Can't check for sparse support on share the usual way via the
1254 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1255 * since Samba server doesn't set the flag on the share, yet
1256 * supports the set sparse FSCTL and returns sparse correctly
1257 * in the file attributes. If we fail setting sparse though we
1258 * mark that server does not support sparse files for this share
1259 * to avoid repeatedly sending the unsupported fsctl to server
1260 * if the file is repeatedly extended.
1261 */
1262 if (tcon->broken_sparse_sup)
1263 return false;
1264
1265 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1266 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
63a83b86 1267 true /* is_fctl */,
51146625 1268 &setsparse, 1, NULL, NULL);
d43cc793
SF		 1269 if (rc) {
1270 tcon->broken_sparse_sup = true;
1271 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1272 return false;
1273 }
1274
1275 if (setsparse)
1276 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1277 else
1278 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1279
1280 return true;
1281}
1282
c839ff24
PS		 1283static int
1284smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1285 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1286{
1287 __le64 eof = cpu_to_le64(size);
3d1a3745
SF		 1288 struct inode *inode;
1289
1290 /*
1291 * If extending file more than one page make sparse. Many Linux fs
1292 * make files sparse by default when extending via ftruncate
1293 */
2b0143b5 1294 inode = d_inode(cfile->dentry);
3d1a3745
SF		 1295
1296 if (!set_alloc && (size > inode->i_size + 8192)) {
3d1a3745 1297 __u8 set_sparse = 1;
d43cc793
SF		 1298
1299 /* whether set sparse succeeds or not, extend the file */
1300 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
3d1a3745
SF		 1301 }
1302
c839ff24 1303 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
f29ebb47 1304 cfile->fid.volatile_fid, cfile->pid, &eof, false);
c839ff24
PS		 1305}
1306
02b16665
SF		 1307static int
1308smb2_duplicate_extents(const unsigned int xid,
1309 struct cifsFileInfo *srcfile,
1310 struct cifsFileInfo *trgtfile, u64 src_off,
1311 u64 len, u64 dest_off)
1312{
1313 int rc;
1314 unsigned int ret_data_len;
02b16665
SF		 1315 struct duplicate_extents_to_file dup_ext_buf;
1316 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1317
1318 /* server fileays advertise duplicate extent support with this flag */
1319 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1320 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1321 return -EOPNOTSUPP;
1322
1323 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1324 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1325 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1326 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1327 dup_ext_buf.ByteCount = cpu_to_le64(len);
1328 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
1329 src_off, dest_off, len);
1330
1331 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1332 if (rc)
1333 goto duplicate_extents_out;
1334
1335 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1336 trgtfile->fid.volatile_fid,
1337 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
63a83b86 1338 true /* is_fsctl */,
51146625 1339 (char *)&dup_ext_buf,
02b16665 1340 sizeof(struct duplicate_extents_to_file),
24df1483 1341 NULL,
02b16665
SF		 1342 &ret_data_len);
1343
1344 if (ret_data_len > 0)
1345 cifs_dbg(FYI, "non-zero response length in duplicate extents");
1346
1347duplicate_extents_out:
1348 return rc;
1349}
02b16665 1350
64a5cfa6
SF		 1351static int
1352smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
1353 struct cifsFileInfo *cfile)
1354{
1355 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
1356 cfile->fid.volatile_fid);
1357}
1358
b3152e2c
SF		 1359static int
1360smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
1361 struct cifsFileInfo *cfile)
1362{
1363 struct fsctl_set_integrity_information_req integr_info;
b3152e2c
SF		 1364 unsigned int ret_data_len;
1365
1366 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
1367 integr_info.Flags = 0;
1368 integr_info.Reserved = 0;
1369
1370 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1371 cfile->fid.volatile_fid,
1372 FSCTL_SET_INTEGRITY_INFORMATION,
63a83b86 1373 true /* is_fsctl */,
51146625 1374 (char *)&integr_info,
b3152e2c 1375 sizeof(struct fsctl_set_integrity_information_req),
24df1483 1376 NULL,
b3152e2c
SF		 1377 &ret_data_len);
1378
1379}
1380
e02789a5
SF		 1381/* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
1382#define GMT_TOKEN_SIZE 50
1383
1384/*
1385 * Input buffer contains (empty) struct smb_snapshot array with size filled in
1386 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
1387 */
834170c8
SF		 1388static int
1389smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
1390 struct cifsFileInfo *cfile, void __user *ioc_buf)
1391{
1392 char *retbuf = NULL;
1393 unsigned int ret_data_len = 0;
1394 int rc;
1395 struct smb_snapshot_array snapshot_in;
1396
1397 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1398 cfile->fid.volatile_fid,
1399 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
63a83b86 1400 true /* is_fsctl */,
51146625 1401 NULL, 0 /* no input data */,
834170c8
SF		 1402 (char **)&retbuf,
1403 &ret_data_len);
1404 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
1405 rc, ret_data_len);
1406 if (rc)
1407 return rc;
1408
1409 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
1410 /* Fixup buffer */
1411 if (copy_from_user(&snapshot_in, ioc_buf,
1412 sizeof(struct smb_snapshot_array))) {
1413 rc = -EFAULT;
1414 kfree(retbuf);
1415 return rc;
1416 }
834170c8 1417
e02789a5
SF		 1418 /*
1419 * Check for min size, ie not large enough to fit even one GMT
1420 * token (snapshot). On the first ioctl some users may pass in
1421 * smaller size (or zero) to simply get the size of the array
1422 * so the user space caller can allocate sufficient memory
1423 * and retry the ioctl again with larger array size sufficient
1424 * to hold all of the snapshot GMT tokens on the second try.
1425 */
1426 if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
1427 ret_data_len = sizeof(struct smb_snapshot_array);
1428
1429 /*
1430 * We return struct SRV_SNAPSHOT_ARRAY, followed by
1431 * the snapshot array (of 50 byte GMT tokens) each
1432 * representing an available previous version of the data
1433 */
1434 if (ret_data_len > (snapshot_in.snapshot_array_size +
1435 sizeof(struct smb_snapshot_array)))
1436 ret_data_len = snapshot_in.snapshot_array_size +
1437 sizeof(struct smb_snapshot_array);
834170c8
SF		 1438
1439 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
1440 rc = -EFAULT;
1441 }
1442
1443 kfree(retbuf);
1444 return rc;
1445}
1446
d324f08d
PS		 1447static int
1448smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
1449 const char *path, struct cifs_sb_info *cifs_sb,
1450 struct cifs_fid *fid, __u16 search_flags,
1451 struct cifs_search_info *srch_inf)
1452{
1453 __le16 *utf16_path;
1454 int rc;
2e44b288 1455 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047 1456 struct cifs_open_parms oparms;
d324f08d
PS		 1457
1458 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1459 if (!utf16_path)
1460 return -ENOMEM;
1461
064f6047
PS		 1462 oparms.tcon = tcon;
1463 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
1464 oparms.disposition = FILE_OPEN;
5e19697b
SF		 1465 if (backup_cred(cifs_sb))
1466 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1467 else
1468 oparms.create_options = 0;
064f6047 1469 oparms.fid = fid;
9cbc0b73 1470 oparms.reconnect = false;
064f6047 1471
9d874c36 1472 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
d324f08d
PS		 1473 kfree(utf16_path);
1474 if (rc) {
dcd87838 1475 cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
d324f08d
PS		 1476 return rc;
1477 }
1478
1479 srch_inf->entries_in_buffer = 0;
1480 srch_inf->index_of_last_entry = 0;
d324f08d 1481
064f6047
PS		 1482 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
1483 fid->volatile_fid, 0, srch_inf);
d324f08d 1484 if (rc) {
dcd87838 1485 cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
064f6047 1486 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
d324f08d
PS		 1487 }
1488 return rc;
1489}
1490
1491static int
1492smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
1493 struct cifs_fid *fid, __u16 search_flags,
1494 struct cifs_search_info *srch_inf)
1495{
1496 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
1497 fid->volatile_fid, 0, srch_inf);
1498}
1499
1500static int
1501smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1502 struct cifs_fid *fid)
1503{
1504 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1505}
1506
2e44b288
PS		 1507/*
1508* If we negotiate SMB2 protocol and get STATUS_PENDING - update
1509* the number of credits and return true. Otherwise - return false.
1510*/
1511static bool
1512smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
1513{
49f466bd 1514 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2e44b288 1515
31473fc4 1516 if (shdr->Status != STATUS_PENDING)
2e44b288
PS		 1517 return false;
1518
1519 if (!length) {
1520 spin_lock(&server->req_lock);
31473fc4 1521 server->credits += le16_to_cpu(shdr->CreditRequest);
2e44b288
PS		 1522 spin_unlock(&server->req_lock);
1523 wake_up(&server->request_q);
1524 }
1525
1526 return true;
1527}
1528
511c54a2
PS		 1529static bool
1530smb2_is_session_expired(char *buf)
1531{
49f466bd 1532 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
511c54a2 1533
d81243c6
MS		 1534 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
1535 shdr->Status != STATUS_USER_SESSION_DELETED)
511c54a2
PS		 1536 return false;
1537
e68a932b
SF		 1538 trace_smb3_ses_expired(shdr->TreeId, shdr->SessionId,
1539 le16_to_cpu(shdr->Command),
1540 le64_to_cpu(shdr->MessageId));
d81243c6 1541 cifs_dbg(FYI, "Session expired or deleted\n");
e68a932b 1542
511c54a2
PS		 1543 return true;
1544}
1545
983c88a4
PS		 1546static int
1547smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1548 struct cifsInodeInfo *cinode)
1549{
0822f514
PS		 1550 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1551 return SMB2_lease_break(0, tcon, cinode->lease_key,
1552 smb2_get_lease_state(cinode));
1553
983c88a4
PS		 1554 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1555 fid->volatile_fid,
18cceb6a 1556 CIFS_CACHE_READ(cinode) ? 1 : 0);
983c88a4
PS		 1557}
1558
730928c8
RS		 1559static void
1560smb2_set_related(struct smb_rqst *rqst)
1561{
1562 struct smb2_sync_hdr *shdr;
1563
1564 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
1565 shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
1566}
1567
1568char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
1569
1570static void
1571smb2_set_next_command(struct TCP_Server_Info *server, struct smb_rqst *rqst)
1572{
1573 struct smb2_sync_hdr *shdr;
1574 unsigned long len = smb_rqst_len(server, rqst);
1575
1576 /* SMB headers in a compound are 8 byte aligned. */
1577 if (len & 7) {
1578 rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
1579 rqst->rq_iov[rqst->rq_nvec].iov_len = 8 - (len & 7);
1580 rqst->rq_nvec++;
1581 len = smb_rqst_len(server, rqst);
1582 }
1583
1584 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
1585 shdr->NextCommand = cpu_to_le32(len);
1586}
1587
6fc05c25
PS		 1588static int
1589smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1590 struct kstatfs *buf)
1591{
730928c8
RS		 1592 struct smb2_query_info_rsp *rsp;
1593 struct smb2_fs_full_size_info *info = NULL;
1594 struct smb_rqst rqst[3];
1595 int resp_buftype[3];
1596 struct kvec rsp_iov[3];
4d8dfafc 1597 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
730928c8
RS		 1598 struct kvec qi_iov[1];
1599 struct kvec close_iov[1];
1600 struct cifs_ses *ses = tcon->ses;
1601 struct TCP_Server_Info *server = ses->server;
6fc05c25
PS		 1602 __le16 srch_path = 0; /* Null - open root of share */
1603 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 1604 struct cifs_open_parms oparms;
1605 struct cifs_fid fid;
730928c8
RS		 1606 int flags = 0;
1607 int rc;
1608
1609 if (smb3_encryption_required(tcon))
1610 flags |= CIFS_TRANSFORM_REQ;
1611
1612 memset(rqst, 0, sizeof(rqst));
1613 memset(resp_buftype, 0, sizeof(resp_buftype));
1614 memset(rsp_iov, 0, sizeof(rsp_iov));
1615
1616 memset(&open_iov, 0, sizeof(open_iov));
1617 rqst[0].rq_iov = open_iov;
4d8dfafc 1618 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
064f6047
PS		 1619
1620 oparms.tcon = tcon;
1621 oparms.desired_access = FILE_READ_ATTRIBUTES;
1622 oparms.disposition = FILE_OPEN;
1623 oparms.create_options = 0;
1624 oparms.fid = &fid;
9cbc0b73 1625 oparms.reconnect = false;
6fc05c25 1626
730928c8 1627 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &srch_path);
6fc05c25 1628 if (rc)
730928c8
RS		 1629 goto qfs_exit;
1630 smb2_set_next_command(server, &rqst[0]);
1631
1632 memset(&qi_iov, 0, sizeof(qi_iov));
1633 rqst[1].rq_iov = qi_iov;
1634 rqst[1].rq_nvec = 1;
1635
1636 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
1637 FS_FULL_SIZE_INFORMATION,
1638 SMB2_O_INFO_FILESYSTEM, 0,
1639 sizeof(struct smb2_fs_full_size_info));
1640 if (rc)
1641 goto qfs_exit;
1642 smb2_set_next_command(server, &rqst[1]);
1643 smb2_set_related(&rqst[1]);
1644
1645 memset(&close_iov, 0, sizeof(close_iov));
1646 rqst[2].rq_iov = close_iov;
1647 rqst[2].rq_nvec = 1;
1648
1649 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
1650 if (rc)
1651 goto qfs_exit;
1652 smb2_set_related(&rqst[2]);
1653
1654 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1655 resp_buftype, rsp_iov);
1656 if (rc)
1657 goto qfs_exit;
1658
1659 rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
6fc05c25 1660 buf->f_type = SMB2_MAGIC_NUMBER;
730928c8
RS		 1661 info = (struct smb2_fs_full_size_info *)(
1662 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
1663 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
1664 le32_to_cpu(rsp->OutputBufferLength),
1665 &rsp_iov[1],
1666 sizeof(struct smb2_fs_full_size_info));
1667 if (!rc)
1668 smb2_copy_fs_info_to_kstatfs(info, buf);
1669
1670qfs_exit:
1671 SMB2_open_free(&rqst[0]);
1672 SMB2_query_info_free(&rqst[1]);
1673 SMB2_close_free(&rqst[2]);
1674 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1675 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1676 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
6fc05c25
PS		 1677 return rc;
1678}
1679
2d304217
SF		 1680static int
1681smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1682 struct kstatfs *buf)
1683{
1684 int rc;
1685 __le16 srch_path = 0; /* Null - open root of share */
1686 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1687 struct cifs_open_parms oparms;
1688 struct cifs_fid fid;
1689
1690 if (!tcon->posix_extensions)
1691 return smb2_queryfs(xid, tcon, buf);
1692
1693 oparms.tcon = tcon;
1694 oparms.desired_access = FILE_READ_ATTRIBUTES;
1695 oparms.disposition = FILE_OPEN;
1696 oparms.create_options = 0;
1697 oparms.fid = &fid;
1698 oparms.reconnect = false;
1699
1700 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
1701 if (rc)
1702 return rc;
1703
1704 rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
1705 fid.volatile_fid, buf);
1706 buf->f_type = SMB2_MAGIC_NUMBER;
1707 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1708 return rc;
1709}
2d304217 1710
027e8eec
PS		 1711static bool
1712smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
1713{
1714 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
1715 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
1716}
1717
f7ba7fe6
PS		 1718static int
1719smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
1720 __u64 length, __u32 type, int lock, int unlock, bool wait)
1721{
1722 if (unlock && !lock)
1723 type = SMB2_LOCKFLAG_UNLOCK;
1724 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
1725 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
1726 current->tgid, length, offset, type, wait);
1727}
1728
b8c32dbb
PS		 1729static void
1730smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
1731{
1732 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
1733}
1734
1735static void
1736smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
1737{
1738 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
1739}
1740
1741static void
1742smb2_new_lease_key(struct cifs_fid *fid)
1743{
fa70b87c 1744 generate_random_uuid(fid->lease_key);
b8c32dbb
PS		 1745}
1746
9d49640a
AA		 1747static int
1748smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
1749 const char *search_name,
1750 struct dfs_info3_param **target_nodes,
1751 unsigned int *num_of_nodes,
1752 const struct nls_table *nls_codepage, int remap)
1753{
1754 int rc;
1755 __le16 *utf16_path = NULL;
1756 int utf16_path_len = 0;
1757 struct cifs_tcon *tcon;
1758 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
1759 struct get_dfs_referral_rsp *dfs_rsp = NULL;
1760 u32 dfs_req_size = 0, dfs_rsp_size = 0;
1761
1762 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
1763
1764 /*
63a83b86 1765 * Try to use the IPC tcon, otherwise just use any
9d49640a 1766 */
63a83b86
AA		 1767 tcon = ses->tcon_ipc;
1768 if (tcon == NULL) {
1769 spin_lock(&cifs_tcp_ses_lock);
1770 tcon = list_first_entry_or_null(&ses->tcon_list,
1771 struct cifs_tcon,
1772 tcon_list);
1773 if (tcon)
1774 tcon->tc_count++;
1775 spin_unlock(&cifs_tcp_ses_lock);
1776 }
1777
1778 if (tcon == NULL) {
9d49640a
AA		 1779 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
1780 ses);
1781 rc = -ENOTCONN;
1782 goto out;
1783 }
1784
1785 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
1786 &utf16_path_len,
1787 nls_codepage, remap);
1788 if (!utf16_path) {
1789 rc = -ENOMEM;
1790 goto out;
1791 }
1792
1793 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
1794 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
1795 if (!dfs_req) {
1796 rc = -ENOMEM;
1797 goto out;
1798 }
1799
1800 /* Highest DFS referral version understood */
1801 dfs_req->MaxReferralLevel = DFS_VERSION;
1802
1803 /* Path to resolve in an UTF-16 null-terminated string */
1804 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
1805
1806 do {
9d49640a
AA		 1807 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1808 FSCTL_DFS_GET_REFERRALS,
63a83b86 1809 true /* is_fsctl */,
9d49640a
AA		 1810 (char *)dfs_req, dfs_req_size,
1811 (char **)&dfs_rsp, &dfs_rsp_size);
9d49640a
AA		 1812 } while (rc == -EAGAIN);
1813
1814 if (rc) {
2564f2ff 1815 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
5702591f 1816 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
9d49640a
AA		 1817 goto out;
1818 }
1819
1820 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
1821 num_of_nodes, target_nodes,
1822 nls_codepage, remap, search_name,
1823 true /* is_unicode */);
1824 if (rc) {
1825 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
1826 goto out;
1827 }
1828
1829 out:
63a83b86
AA		 1830 if (tcon && !tcon->ipc) {
1831 /* ipc tcons are not refcounted */
9d49640a
AA		 1832 spin_lock(&cifs_tcp_ses_lock);
1833 tcon->tc_count--;
1834 spin_unlock(&cifs_tcp_ses_lock);
1835 }
1836 kfree(utf16_path);
1837 kfree(dfs_req);
1838 kfree(dfs_rsp);
1839 return rc;
1840}
7893242e
PS		 1841#define SMB2_SYMLINK_STRUCT_SIZE \
1842 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
1843
b42bf888
PS		 1844static int
1845smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
1846 const char *full_path, char **target_path,
1847 struct cifs_sb_info *cifs_sb)
1848{
1849 int rc;
1850 __le16 *utf16_path;
1851 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1852 struct cifs_open_parms oparms;
1853 struct cifs_fid fid;
91cb74f5 1854 struct kvec err_iov = {NULL, 0};
9d874c36
RS		 1855 struct smb2_err_rsp *err_buf = NULL;
1856 int resp_buftype;
b42bf888 1857 struct smb2_symlink_err_rsp *symlink;
7893242e
PS		 1858 unsigned int sub_len;
1859 unsigned int sub_offset;
1860 unsigned int print_len;
1861 unsigned int print_offset;
b42bf888
PS		 1862
1863 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
1864
1865 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
1866 if (!utf16_path)
1867 return -ENOMEM;
1868
1869 oparms.tcon = tcon;
1870 oparms.desired_access = FILE_READ_ATTRIBUTES;
1871 oparms.disposition = FILE_OPEN;
5e19697b
SF		 1872 if (backup_cred(cifs_sb))
1873 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1874 else
1875 oparms.create_options = 0;
b42bf888
PS		 1876 oparms.fid = &fid;
1877 oparms.reconnect = false;
1878
9d874c36
RS		 1879 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_iov,
1880 &resp_buftype);
0d568cd3 1881 if (!rc || !err_iov.iov_base) {
9d874c36 1882 rc = -ENOENT;
ff361fda 1883 goto free_path;
b42bf888 1884 }
7893242e 1885
91cb74f5 1886 err_buf = err_iov.iov_base;
7893242e 1887 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1fc6ad2f 1888 err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) {
9d874c36
RS		 1889 rc = -ENOENT;
1890 goto querty_exit;
7893242e
PS		 1891 }
1892
b42bf888
PS		 1893 /* open must fail on symlink - reset rc */
1894 rc = 0;
1895 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
1896 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
1897 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
7893242e
PS		 1898 print_len = le16_to_cpu(symlink->PrintNameLength);
1899 print_offset = le16_to_cpu(symlink->PrintNameOffset);
1900
1fc6ad2f 1901 if (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
9d874c36
RS		 1902 rc = -ENOENT;
1903 goto querty_exit;
7893242e
PS		 1904 }
1905
1fc6ad2f
RS		 1906 if (err_iov.iov_len <
1907 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
9d874c36
RS		 1908 rc = -ENOENT;
1909 goto querty_exit;
7893242e
PS		 1910 }
1911
b42bf888
PS		 1912 *target_path = cifs_strndup_from_utf16(
1913 (char *)symlink->PathBuffer + sub_offset,
1914 sub_len, true, cifs_sb->local_nls);
1915 if (!(*target_path)) {
9d874c36
RS		 1916 rc = -ENOMEM;
1917 goto querty_exit;
b42bf888
PS		 1918 }
1919 convert_delimiter(*target_path, '/');
1920 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
9d874c36
RS		 1921
1922 querty_exit:
1923 free_rsp_buf(resp_buftype, err_buf);
ff361fda 1924 free_path:
b42bf888
PS		 1925 kfree(utf16_path);
1926 return rc;
1927}
1928
84908426 1929#ifdef CONFIG_CIFS_ACL
2f1afe25
SP		 1930static struct cifs_ntsd *
1931get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
1932 const struct cifs_fid *cifsfid, u32 *pacllen)
1933{
1934 struct cifs_ntsd *pntsd = NULL;
1935 unsigned int xid;
1936 int rc = -EOPNOTSUPP;
1937 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1938
1939 if (IS_ERR(tlink))
1940 return ERR_CAST(tlink);
1941
1942 xid = get_xid();
1943 cifs_dbg(FYI, "trying to get acl\n");
1944
1945 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
1946 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
1947 free_xid(xid);
1948
1949 cifs_put_tlink(tlink);
1950
1951 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1952 if (rc)
1953 return ERR_PTR(rc);
1954 return pntsd;
1955
1956}
1957
1958static struct cifs_ntsd *
1959get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
1960 const char *path, u32 *pacllen)
1961{
1962 struct cifs_ntsd *pntsd = NULL;
1963 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1964 unsigned int xid;
1965 int rc;
1966 struct cifs_tcon *tcon;
1967 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1968 struct cifs_fid fid;
1969 struct cifs_open_parms oparms;
1970 __le16 *utf16_path;
1971
1972 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
1973 if (IS_ERR(tlink))
1974 return ERR_CAST(tlink);
1975
1976 tcon = tlink_tcon(tlink);
1977 xid = get_xid();
1978
1979 if (backup_cred(cifs_sb))
709340a0 1980 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2f1afe25
SP		 1981 else
1982 oparms.create_options = 0;
1983
1984 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
cfe89091
SF		 1985 if (!utf16_path) {
1986 rc = -ENOMEM;
1987 free_xid(xid);
1988 return ERR_PTR(rc);
1989 }
2f1afe25
SP		 1990
1991 oparms.tcon = tcon;
1992 oparms.desired_access = READ_CONTROL;
1993 oparms.disposition = FILE_OPEN;
1994 oparms.fid = &fid;
1995 oparms.reconnect = false;
1996
9d874c36 1997 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2f1afe25
SP		 1998 kfree(utf16_path);
1999 if (!rc) {
2000 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
2001 fid.volatile_fid, (void **)&pntsd, pacllen);
2002 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2003 }
2004
2005 cifs_put_tlink(tlink);
2006 free_xid(xid);
2007
2008 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
2009 if (rc)
2010 return ERR_PTR(rc);
2011 return pntsd;
2012}
2013
366ed846
SP		 2014#ifdef CONFIG_CIFS_ACL
2015static int
2016set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
2017 struct inode *inode, const char *path, int aclflag)
2018{
2019 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2020 unsigned int xid;
2021 int rc, access_flags = 0;
2022 struct cifs_tcon *tcon;
2023 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2024 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2025 struct cifs_fid fid;
2026 struct cifs_open_parms oparms;
2027 __le16 *utf16_path;
2028
2029 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
2030 if (IS_ERR(tlink))
2031 return PTR_ERR(tlink);
2032
2033 tcon = tlink_tcon(tlink);
2034 xid = get_xid();
2035
2036 if (backup_cred(cifs_sb))
2037 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2038 else
2039 oparms.create_options = 0;
2040
2041 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
2042 access_flags = WRITE_OWNER;
2043 else
2044 access_flags = WRITE_DAC;
2045
2046 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
cfe89091
SF		 2047 if (!utf16_path) {
2048 rc = -ENOMEM;
2049 free_xid(xid);
2050 return rc;
2051 }
366ed846
SP		 2052
2053 oparms.tcon = tcon;
2054 oparms.desired_access = access_flags;
2055 oparms.disposition = FILE_OPEN;
2056 oparms.path = path;
2057 oparms.fid = &fid;
2058 oparms.reconnect = false;
2059
9d874c36 2060 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
366ed846
SP		 2061 kfree(utf16_path);
2062 if (!rc) {
2063 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
2064 fid.volatile_fid, pnntsd, acllen, aclflag);
2065 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2066 }
2067
2068 cifs_put_tlink(tlink);
2069 free_xid(xid);
2070 return rc;
2071}
2072#endif /* CIFS_ACL */
2073
2f1afe25
SP		 2074/* Retrieve an ACL from the server */
2075static struct cifs_ntsd *
2076get_smb2_acl(struct cifs_sb_info *cifs_sb,
2077 struct inode *inode, const char *path,
2078 u32 *pacllen)
2079{
2080 struct cifs_ntsd *pntsd = NULL;
2081 struct cifsFileInfo *open_file = NULL;
2082
2083 if (inode)
2084 open_file = find_readable_file(CIFS_I(inode), true);
2085 if (!open_file)
2086 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
2087
2088 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
2089 cifsFileInfo_put(open_file);
2090 return pntsd;
2091}
84908426 2092#endif
2f1afe25 2093
30175628
SF		 2094static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
2095 loff_t offset, loff_t len, bool keep_size)
2096{
2097 struct inode *inode;
2098 struct cifsInodeInfo *cifsi;
2099 struct cifsFileInfo *cfile = file->private_data;
2100 struct file_zero_data_information fsctl_buf;
2101 long rc;
2102 unsigned int xid;
2103
2104 xid = get_xid();
2105
2b0143b5 2106 inode = d_inode(cfile->dentry);
30175628
SF		 2107 cifsi = CIFS_I(inode);
2108
2109 /* if file not oplocked can't be sure whether asking to extend size */
2110 if (!CIFS_CACHE_READ(cifsi))
cfe89091
SF		 2111 if (keep_size == false) {
2112 rc = -EOPNOTSUPP;
2113 free_xid(xid);
2114 return rc;
2115 }
30175628 2116
2bb93d24 2117 /*
30175628
SF		 2118 * Must check if file sparse since fallocate -z (zero range) assumes
2119 * non-sparse allocation
2120 */
cfe89091
SF		 2121 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
2122 rc = -EOPNOTSUPP;
2123 free_xid(xid);
2124 return rc;
2125 }
30175628
SF		 2126
2127 /*
2128 * need to make sure we are not asked to extend the file since the SMB3
2129 * fsctl does not change the file size. In the future we could change
2130 * this to zero the first part of the range then set the file size
2131 * which for a non sparse file would zero the newly extended range
2132 */
2133 if (keep_size == false)
cfe89091
SF		 2134 if (i_size_read(inode) < offset + len) {
2135 rc = -EOPNOTSUPP;
2136 free_xid(xid);
2137 return rc;
2138 }
30175628
SF		 2139
2140 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
2141
2142 fsctl_buf.FileOffset = cpu_to_le64(offset);
2143 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
2144
2145 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2146 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
63a83b86 2147 true /* is_fctl */, (char *)&fsctl_buf,
30175628
SF		 2148 sizeof(struct file_zero_data_information), NULL, NULL);
2149 free_xid(xid);
2150 return rc;
2151}
2152
31742c5a
SF		 2153static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
2154 loff_t offset, loff_t len)
2155{
2156 struct inode *inode;
2157 struct cifsInodeInfo *cifsi;
2158 struct cifsFileInfo *cfile = file->private_data;
2159 struct file_zero_data_information fsctl_buf;
2160 long rc;
2161 unsigned int xid;
2162 __u8 set_sparse = 1;
2163
2164 xid = get_xid();
2165
2b0143b5 2166 inode = d_inode(cfile->dentry);
31742c5a
SF		 2167 cifsi = CIFS_I(inode);
2168
2169 /* Need to make file sparse, if not already, before freeing range. */
2170 /* Consider adding equivalent for compressed since it could also work */
cfe89091
SF		 2171 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
2172 rc = -EOPNOTSUPP;
2173 free_xid(xid);
2174 return rc;
2175 }
31742c5a
SF		 2176
2177 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
2178
2179 fsctl_buf.FileOffset = cpu_to_le64(offset);
2180 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
2181
2182 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2183 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
63a83b86 2184 true /* is_fctl */, (char *)&fsctl_buf,
31742c5a
SF		 2185 sizeof(struct file_zero_data_information), NULL, NULL);
2186 free_xid(xid);
2187 return rc;
2188}
2189
9ccf3216
SF		 2190static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
2191 loff_t off, loff_t len, bool keep_size)
2192{
2193 struct inode *inode;
2194 struct cifsInodeInfo *cifsi;
2195 struct cifsFileInfo *cfile = file->private_data;
2196 long rc = -EOPNOTSUPP;
2197 unsigned int xid;
2198
2199 xid = get_xid();
2200
2b0143b5 2201 inode = d_inode(cfile->dentry);
9ccf3216
SF		 2202 cifsi = CIFS_I(inode);
2203
2204 /* if file not oplocked can't be sure whether asking to extend size */
2205 if (!CIFS_CACHE_READ(cifsi))
cfe89091
SF		 2206 if (keep_size == false) {
2207 free_xid(xid);
2208 return rc;
2209 }
9ccf3216
SF		 2210
2211 /*
2212 * Files are non-sparse by default so falloc may be a no-op
2213 * Must check if file sparse. If not sparse, and not extending
2214 * then no need to do anything since file already allocated
2215 */
2216 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
2217 if (keep_size == true)
cfe89091 2218 rc = 0;
9ccf3216
SF		 2219 /* check if extending file */
2220 else if (i_size_read(inode) >= off + len)
2221 /* not extending file and already not sparse */
cfe89091 2222 rc = 0;
9ccf3216
SF		 2223 /* BB: in future add else clause to extend file */
2224 else
cfe89091
SF		 2225 rc = -EOPNOTSUPP;
2226 free_xid(xid);
2227 return rc;
9ccf3216
SF		 2228 }
2229
2230 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
2231 /*
2232 * Check if falloc starts within first few pages of file
2233 * and ends within a few pages of the end of file to
2234 * ensure that most of file is being forced to be
2235 * fallocated now. If so then setting whole file sparse
2236 * ie potentially making a few extra pages at the beginning
2237 * or end of the file non-sparse via set_sparse is harmless.
2238 */
cfe89091
SF		 2239 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
2240 rc = -EOPNOTSUPP;
2241 free_xid(xid);
2242 return rc;
2243 }
9ccf3216
SF		 2244
2245 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
2246 }
2247 /* BB: else ... in future add code to extend file and set sparse */
2248
2249
2250 free_xid(xid);
2251 return rc;
2252}
2253
2254
31742c5a
SF		 2255static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
2256 loff_t off, loff_t len)
2257{
2258 /* KEEP_SIZE already checked for by do_fallocate */
2259 if (mode & FALLOC_FL_PUNCH_HOLE)
2260 return smb3_punch_hole(file, tcon, off, len);
30175628
SF		 2261 else if (mode & FALLOC_FL_ZERO_RANGE) {
2262 if (mode & FALLOC_FL_KEEP_SIZE)
2263 return smb3_zero_range(file, tcon, off, len, true);
2264 return smb3_zero_range(file, tcon, off, len, false);
9ccf3216
SF		 2265 } else if (mode == FALLOC_FL_KEEP_SIZE)
2266 return smb3_simple_falloc(file, tcon, off, len, true);
2267 else if (mode == 0)
2268 return smb3_simple_falloc(file, tcon, off, len, false);
31742c5a
SF		 2269
2270 return -EOPNOTSUPP;
2271}
2272
c11f1df5
SP		 2273static void
2274smb2_downgrade_oplock(struct TCP_Server_Info *server,
2275 struct cifsInodeInfo *cinode, bool set_level2)
2276{
2277 if (set_level2)
2278 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
2279 0, NULL);
2280 else
2281 server->ops->set_oplock_level(cinode, 0, 0, NULL);
2282}
2283
53ef1016 2284static void
42873b0a
PS		 2285smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2286 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 2287{
2288 oplock &= 0xFF;
2289 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2290 return;
2291 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
42873b0a 2292 cinode->oplock = CIFS_CACHE_RHW_FLG;
53ef1016
PS		 2293 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
2294 &cinode->vfs_inode);
2295 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
42873b0a 2296 cinode->oplock = CIFS_CACHE_RW_FLG;
53ef1016
PS		 2297 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
2298 &cinode->vfs_inode);
2299 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
2300 cinode->oplock = CIFS_CACHE_READ_FLG;
2301 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
2302 &cinode->vfs_inode);
2303 } else
2304 cinode->oplock = 0;
2305}
2306
2307static void
42873b0a
PS		 2308smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2309 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 2310{
2311 char message[5] = {0};
2312
2313 oplock &= 0xFF;
2314 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2315 return;
2316
2317 cinode->oplock = 0;
2318 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
2319 cinode->oplock |= CIFS_CACHE_READ_FLG;
2320 strcat(message, "R");
2321 }
2322 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
2323 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
2324 strcat(message, "H");
2325 }
2326 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
2327 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
2328 strcat(message, "W");
2329 }
2330 if (!cinode->oplock)
2331 strcat(message, "None");
2332 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
2333 &cinode->vfs_inode);
2334}
2335
42873b0a
PS		 2336static void
2337smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2338 unsigned int epoch, bool *purge_cache)
2339{
2340 unsigned int old_oplock = cinode->oplock;
2341
2342 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
2343
2344 if (purge_cache) {
2345 *purge_cache = false;
2346 if (old_oplock == CIFS_CACHE_READ_FLG) {
2347 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
2348 (epoch - cinode->epoch > 0))
2349 *purge_cache = true;
2350 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2351 (epoch - cinode->epoch > 1))
2352 *purge_cache = true;
2353 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2354 (epoch - cinode->epoch > 1))
2355 *purge_cache = true;
2356 else if (cinode->oplock == 0 &&
2357 (epoch - cinode->epoch > 0))
2358 *purge_cache = true;
2359 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
2360 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2361 (epoch - cinode->epoch > 0))
2362 *purge_cache = true;
2363 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2364 (epoch - cinode->epoch > 1))
2365 *purge_cache = true;
2366 }
2367 cinode->epoch = epoch;
2368 }
2369}
2370
53ef1016
PS		 2371static bool
2372smb2_is_read_op(__u32 oplock)
2373{
2374 return oplock == SMB2_OPLOCK_LEVEL_II;
2375}
2376
2377static bool
2378smb21_is_read_op(__u32 oplock)
2379{
2380 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
2381 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
2382}
2383
f047390a
PS		 2384static __le32
2385map_oplock_to_lease(u8 oplock)
2386{
2387 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
2388 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
2389 else if (oplock == SMB2_OPLOCK_LEVEL_II)
2390 return SMB2_LEASE_READ_CACHING;
2391 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
2392 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
2393 SMB2_LEASE_WRITE_CACHING;
2394 return 0;
2395}
2396
a41a28bd
PS		 2397static char *
2398smb2_create_lease_buf(u8 *lease_key, u8 oplock)
2399{
2400 struct create_lease *buf;
2401
2402 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
2403 if (!buf)
2404 return NULL;
2405
729c0c9d 2406 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
f047390a 2407 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
a41a28bd
PS		 2408
2409 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2410 (struct create_lease, lcontext));
2411 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
2412 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2413 (struct create_lease, Name));
2414 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 2415 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
a41a28bd
PS		 2416 buf->Name[0] = 'R';
2417 buf->Name[1] = 'q';
2418 buf->Name[2] = 'L';
2419 buf->Name[3] = 's';
2420 return (char *)buf;
2421}
2422
f047390a
PS		 2423static char *
2424smb3_create_lease_buf(u8 *lease_key, u8 oplock)
2425{
2426 struct create_lease_v2 *buf;
2427
2428 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
2429 if (!buf)
2430 return NULL;
2431
729c0c9d 2432 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
f047390a
PS		 2433 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2434
2435 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2436 (struct create_lease_v2, lcontext));
2437 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
2438 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2439 (struct create_lease_v2, Name));
2440 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 2441 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
f047390a
PS		 2442 buf->Name[0] = 'R';
2443 buf->Name[1] = 'q';
2444 buf->Name[2] = 'L';
2445 buf->Name[3] = 's';
2446 return (char *)buf;
2447}
2448
b5c7cde3 2449static __u8
96164ab2 2450smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
b5c7cde3
PS		 2451{
2452 struct create_lease *lc = (struct create_lease *)buf;
2453
42873b0a 2454 *epoch = 0; /* not used */
b5c7cde3
PS		 2455 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2456 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2457 return le32_to_cpu(lc->lcontext.LeaseState);
2458}
2459
f047390a 2460static __u8
96164ab2 2461smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
f047390a
PS		 2462{
2463 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
2464
42873b0a 2465 *epoch = le16_to_cpu(lc->lcontext.Epoch);
f047390a
PS		 2466 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2467 return SMB2_OPLOCK_LEVEL_NOCHANGE;
96164ab2 2468 if (lease_key)
729c0c9d 2469 memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
f047390a
PS		 2470 return le32_to_cpu(lc->lcontext.LeaseState);
2471}
2472
7f6c5008
PS		 2473static unsigned int
2474smb2_wp_retry_size(struct inode *inode)
2475{
2476 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
2477 SMB2_MAX_BUFFER_SIZE);
2478}
2479
52755808
PS		 2480static bool
2481smb2_dir_needs_close(struct cifsFileInfo *cfile)
2482{
2483 return !cfile->invalidHandle;
2484}
2485
026e93dc 2486static void
977b6170
RS		 2487fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
2488 struct smb_rqst *old_rq)
026e93dc
PS		 2489{
2490 struct smb2_sync_hdr *shdr =
c713c877 2491 (struct smb2_sync_hdr *)old_rq->rq_iov[0].iov_base;
026e93dc
PS		 2492
2493 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
2494 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
2495 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
2496 tr_hdr->Flags = cpu_to_le16(0x01);
2497 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2498 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
026e93dc
PS		 2499}
2500
262916bc
RS		 2501/* We can not use the normal sg_set_buf() as we will sometimes pass a
2502 * stack object as buf.
2503 */
2504static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
2505 unsigned int buflen)
2506{
2507 sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
2508}
2509
b2c96de7
RS		 2510/* Assumes the first rqst has a transform header as the first iov.
2511 * I.e.
2512 * rqst[0].rq_iov[0] is transform header
2513 * rqst[0].rq_iov[1+] data to be encrypted/decrypted
2514 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
977b6170 2515 */
026e93dc 2516static struct scatterlist *
b2c96de7 2517init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign)
026e93dc 2518{
b2c96de7 2519 unsigned int sg_len;
026e93dc
PS		 2520 struct scatterlist *sg;
2521 unsigned int i;
2522 unsigned int j;
b2c96de7
RS		 2523 unsigned int idx = 0;
2524 int skip;
2525
2526 sg_len = 1;
2527 for (i = 0; i < num_rqst; i++)
2528 sg_len += rqst[i].rq_nvec + rqst[i].rq_npages;
026e93dc
PS		 2529
2530 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
2531 if (!sg)
2532 return NULL;
2533
2534 sg_init_table(sg, sg_len);
b2c96de7
RS		 2535 for (i = 0; i < num_rqst; i++) {
2536 for (j = 0; j < rqst[i].rq_nvec; j++) {
2537 /*
2538 * The first rqst has a transform header where the
2539 * first 20 bytes are not part of the encrypted blob
2540 */
2541 skip = (i == 0) && (j == 0) ? 20 : 0;
2542 smb2_sg_set_buf(&sg[idx++],
2543 rqst[i].rq_iov[j].iov_base + skip,
2544 rqst[i].rq_iov[j].iov_len - skip);
2545 }
2546
2547 for (j = 0; j < rqst[i].rq_npages; j++) {
2548 unsigned int len, offset;
d5f07fb3 2549
b2c96de7
RS		 2550 rqst_page_get_length(&rqst[i], j, &len, &offset);
2551 sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset);
2552 }
026e93dc 2553 }
b2c96de7 2554 smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE);
026e93dc
PS		 2555 return sg;
2556}
2557
61cfac6f
PS		 2558static int
2559smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
2560{
2561 struct cifs_ses *ses;
2562 u8 *ses_enc_key;
2563
2564 spin_lock(&cifs_tcp_ses_lock);
2565 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
2566 if (ses->Suid != ses_id)
2567 continue;
2568 ses_enc_key = enc ? ses->smb3encryptionkey :
2569 ses->smb3decryptionkey;
2570 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
2571 spin_unlock(&cifs_tcp_ses_lock);
2572 return 0;
2573 }
2574 spin_unlock(&cifs_tcp_ses_lock);
2575
2576 return 1;
2577}
026e93dc 2578/*
c713c877
RS		 2579 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
2580 * iov[0] - transform header (associate data),
2581 * iov[1-N] - SMB2 header and pages - data to encrypt.
2582 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
026e93dc
PS		 2583 * untouched.
2584 */
2585static int
b2c96de7
RS		 2586crypt_message(struct TCP_Server_Info *server, int num_rqst,
2587 struct smb_rqst *rqst, int enc)
026e93dc
PS		 2588{
2589 struct smb2_transform_hdr *tr_hdr =
b2c96de7 2590 (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
1fc6ad2f 2591 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
026e93dc
PS		 2592 int rc = 0;
2593 struct scatterlist *sg;
2594 u8 sign[SMB2_SIGNATURE_SIZE] = {};
61cfac6f 2595 u8 key[SMB3_SIGN_KEY_SIZE];
026e93dc
PS		 2596 struct aead_request *req;
2597 char *iv;
2598 unsigned int iv_len;
a5186b85 2599 DECLARE_CRYPTO_WAIT(wait);
026e93dc
PS		 2600 struct crypto_aead *tfm;
2601 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2602
61cfac6f
PS		 2603 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
2604 if (rc) {
2605 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
2606 enc ? "en" : "de");
026e93dc
PS		 2607 return 0;
2608 }
2609
2610 rc = smb3_crypto_aead_allocate(server);
2611 if (rc) {
2612 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
2613 return rc;
2614 }
2615
2616 tfm = enc ? server->secmech.ccmaesencrypt :
2617 server->secmech.ccmaesdecrypt;
61cfac6f 2618 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
026e93dc
PS		 2619 if (rc) {
2620 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
2621 return rc;
2622 }
2623
2624 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
2625 if (rc) {
2626 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
2627 return rc;
2628 }
2629
2630 req = aead_request_alloc(tfm, GFP_KERNEL);
2631 if (!req) {
2632 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
2633 return -ENOMEM;
2634 }
2635
2636 if (!enc) {
2637 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
2638 crypt_len += SMB2_SIGNATURE_SIZE;
2639 }
2640
b2c96de7 2641 sg = init_sg(num_rqst, rqst, sign);
026e93dc 2642 if (!sg) {
517a6e43
CJ		 2643 cifs_dbg(VFS, "%s: Failed to init sg", __func__);
2644 rc = -ENOMEM;
026e93dc
PS		 2645 goto free_req;
2646 }
2647
2648 iv_len = crypto_aead_ivsize(tfm);
2649 iv = kzalloc(iv_len, GFP_KERNEL);
2650 if (!iv) {
2651 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
517a6e43 2652 rc = -ENOMEM;
026e93dc
PS		 2653 goto free_sg;
2654 }
2655 iv[0] = 3;
2656 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2657
2658 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
2659 aead_request_set_ad(req, assoc_data_len);
2660
2661 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
a5186b85 2662 crypto_req_done, &wait);
026e93dc 2663
a5186b85
GBY		 2664 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
2665 : crypto_aead_decrypt(req), &wait);
026e93dc
PS		 2666
2667 if (!rc && enc)
2668 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
2669
2670 kfree(iv);
2671free_sg:
2672 kfree(sg);
2673free_req:
2674 kfree(req);
2675 return rc;
2676}
2677
b2c96de7
RS		 2678void
2679smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
2680{
2681 int i, j;
2682
2683 for (i = 0; i < num_rqst; i++) {
2684 if (rqst[i].rq_pages) {
2685 for (j = rqst[i].rq_npages - 1; j >= 0; j--)
2686 put_page(rqst[i].rq_pages[j]);
2687 kfree(rqst[i].rq_pages);
2688 }
2689 }
2690}
2691
2692/*
2693 * This function will initialize new_rq and encrypt the content.
2694 * The first entry, new_rq[0], only contains a single iov which contains
2695 * a smb2_transform_hdr and is pre-allocated by the caller.
2696 * This function then populates new_rq[1+] with the content from olq_rq[0+].
2697 *
2698 * The end result is an array of smb_rqst structures where the first structure
2699 * only contains a single iov for the transform header which we then can pass
2700 * to crypt_message().
2701 *
2702 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
2703 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
2704 */
026e93dc 2705static int
b2c96de7
RS		 2706smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
2707 struct smb_rqst *new_rq, struct smb_rqst *old_rq)
026e93dc 2708{
026e93dc 2709 struct page **pages;
b2c96de7
RS		 2710 struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
2711 unsigned int npages;
2712 unsigned int orig_len = 0;
2713 int i, j;
026e93dc
PS		 2714 int rc = -ENOMEM;
2715
b2c96de7
RS		 2716 for (i = 1; i < num_rqst; i++) {
2717 npages = old_rq[i - 1].rq_npages;
2718 pages = kmalloc_array(npages, sizeof(struct page *),
2719 GFP_KERNEL);
2720 if (!pages)
2721 goto err_free;
2722
2723 new_rq[i].rq_pages = pages;
2724 new_rq[i].rq_npages = npages;
2725 new_rq[i].rq_offset = old_rq[i - 1].rq_offset;
2726 new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz;
2727 new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz;
2728 new_rq[i].rq_iov = old_rq[i - 1].rq_iov;
2729 new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec;
2730
2731 orig_len += smb_rqst_len(server, &old_rq[i - 1]);
2732
2733 for (j = 0; j < npages; j++) {
2734 pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2735 if (!pages[j])
2736 goto err_free;
2737 }
026e93dc 2738
b2c96de7
RS		 2739 /* copy pages form the old */
2740 for (j = 0; j < npages; j++) {
2741 char *dst, *src;
2742 unsigned int offset, len;
977b6170 2743
b2c96de7 2744 rqst_page_get_length(&new_rq[i], j, &len, &offset);
026e93dc 2745
b2c96de7
RS		 2746 dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset;
2747 src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset;
026e93dc 2748
b2c96de7
RS		 2749 memcpy(dst, src, len);
2750 kunmap(new_rq[i].rq_pages[j]);
2751 kunmap(old_rq[i - 1].rq_pages[j]);
2752 }
2753 }
35e2cc1b 2754
b2c96de7 2755 /* fill the 1st iov with a transform header */
977b6170 2756 fill_transform_hdr(tr_hdr, orig_len, old_rq);
d5f07fb3 2757
b2c96de7 2758 rc = crypt_message(server, num_rqst, new_rq, 1);
026e93dc
PS		 2759 cifs_dbg(FYI, "encrypt message returned %d", rc);
2760 if (rc)
b2c96de7 2761 goto err_free;
026e93dc
PS		 2762
2763 return rc;
2764
b2c96de7
RS		 2765err_free:
2766 smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
026e93dc
PS		 2767 return rc;
2768}
2769
4326ed2f
PS		 2770static int
2771smb3_is_transform_hdr(void *buf)
2772{
2773 struct smb2_transform_hdr *trhdr = buf;
2774
2775 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
2776}
2777
2778static int
2779decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
2780 unsigned int buf_data_size, struct page **pages,
2781 unsigned int npages, unsigned int page_data_size)
2782{
c713c877 2783 struct kvec iov[2];
4326ed2f 2784 struct smb_rqst rqst = {NULL};
4326ed2f
PS		 2785 int rc;
2786
c713c877
RS		 2787 iov[0].iov_base = buf;
2788 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
2789 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
2790 iov[1].iov_len = buf_data_size;
4326ed2f
PS		 2791
2792 rqst.rq_iov = iov;
c713c877 2793 rqst.rq_nvec = 2;
4326ed2f
PS		 2794 rqst.rq_pages = pages;
2795 rqst.rq_npages = npages;
2796 rqst.rq_pagesz = PAGE_SIZE;
2797 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
2798
b2c96de7 2799 rc = crypt_message(server, 1, &rqst, 0);
4326ed2f
PS		 2800 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
2801
2802 if (rc)
2803 return rc;
2804
c713c877 2805 memmove(buf, iov[1].iov_base, buf_data_size);
977b6170
RS		 2806
2807 server->total_read = buf_data_size + page_data_size;
4326ed2f
PS		 2808
2809 return rc;
2810}
2811
c42a6abe
PS		 2812static int
2813read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
2814 unsigned int npages, unsigned int len)
2815{
2816 int i;
2817 int length;
2818
2819 for (i = 0; i < npages; i++) {
2820 struct page *page = pages[i];
2821 size_t n;
2822
2823 n = len;
2824 if (len >= PAGE_SIZE) {
2825 /* enough data to fill the page */
2826 n = PAGE_SIZE;
2827 len -= n;
2828 } else {
2829 zero_user(page, len, PAGE_SIZE - len);
2830 len = 0;
2831 }
1dbe3466 2832 length = cifs_read_page_from_socket(server, page, 0, n);
c42a6abe
PS		 2833 if (length < 0)
2834 return length;
2835 server->total_read += length;
2836 }
2837
2838 return 0;
2839}
2840
2841static int
2842init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
2843 unsigned int cur_off, struct bio_vec **page_vec)
2844{
2845 struct bio_vec *bvec;
2846 int i;
2847
2848 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
2849 if (!bvec)
2850 return -ENOMEM;
2851
2852 for (i = 0; i < npages; i++) {
2853 bvec[i].bv_page = pages[i];
2854 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
2855 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
2856 data_size -= bvec[i].bv_len;
2857 }
2858
2859 if (data_size != 0) {
2860 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
2861 kfree(bvec);
2862 return -EIO;
2863 }
2864
2865 *page_vec = bvec;
2866 return 0;
2867}
2868
4326ed2f
PS		 2869static int
2870handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
2871 char *buf, unsigned int buf_len, struct page **pages,
2872 unsigned int npages, unsigned int page_data_size)
2873{
2874 unsigned int data_offset;
2875 unsigned int data_len;
c42a6abe
PS		 2876 unsigned int cur_off;
2877 unsigned int cur_page_idx;
2878 unsigned int pad_len;
4326ed2f 2879 struct cifs_readdata *rdata = mid->callback_data;
49f466bd 2880 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
4326ed2f
PS		 2881 struct bio_vec *bvec = NULL;
2882 struct iov_iter iter;
2883 struct kvec iov;
2884 int length;
74dcf418 2885 bool use_rdma_mr = false;
4326ed2f
PS		 2886
2887 if (shdr->Command != SMB2_READ) {
2888 cifs_dbg(VFS, "only big read responses are supported\n");
2889 return -ENOTSUPP;
2890 }
2891
511c54a2
PS		 2892 if (server->ops->is_session_expired &&
2893 server->ops->is_session_expired(buf)) {
2894 cifs_reconnect(server);
2895 wake_up(&server->response_q);
2896 return -1;
2897 }
2898
4326ed2f
PS		 2899 if (server->ops->is_status_pending &&
2900 server->ops->is_status_pending(buf, server, 0))
2901 return -1;
2902
2903 rdata->result = server->ops->map_error(buf, false);
2904 if (rdata->result != 0) {
2905 cifs_dbg(FYI, "%s: server returned error %d\n",
2906 __func__, rdata->result);
2907 dequeue_mid(mid, rdata->result);
2908 return 0;
2909 }
2910
1fc6ad2f 2911 data_offset = server->ops->read_data_offset(buf);
74dcf418
LL		 2912#ifdef CONFIG_CIFS_SMB_DIRECT
2913 use_rdma_mr = rdata->mr;
2914#endif
2915 data_len = server->ops->read_data_length(buf, use_rdma_mr);
4326ed2f
PS		 2916
2917 if (data_offset < server->vals->read_rsp_size) {
2918 /*
2919 * win2k8 sometimes sends an offset of 0 when the read
2920 * is beyond the EOF. Treat it as if the data starts just after
2921 * the header.
2922 */
2923 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
2924 __func__, data_offset);
2925 data_offset = server->vals->read_rsp_size;
2926 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
2927 /* data_offset is beyond the end of smallbuf */
2928 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
2929 __func__, data_offset);
2930 rdata->result = -EIO;
2931 dequeue_mid(mid, rdata->result);
2932 return 0;
2933 }
2934
c42a6abe
PS		 2935 pad_len = data_offset - server->vals->read_rsp_size;
2936
4326ed2f
PS		 2937 if (buf_len <= data_offset) {
2938 /* read response payload is in pages */
c42a6abe
PS		 2939 cur_page_idx = pad_len / PAGE_SIZE;
2940 cur_off = pad_len % PAGE_SIZE;
2941
2942 if (cur_page_idx != 0) {
2943 /* data offset is beyond the 1st page of response */
2944 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
2945 __func__, data_offset);
2946 rdata->result = -EIO;
2947 dequeue_mid(mid, rdata->result);
2948 return 0;
2949 }
2950
2951 if (data_len > page_data_size - pad_len) {
2952 /* data_len is corrupt -- discard frame */
2953 rdata->result = -EIO;
2954 dequeue_mid(mid, rdata->result);
2955 return 0;
2956 }
2957
2958 rdata->result = init_read_bvec(pages, npages, page_data_size,
2959 cur_off, &bvec);
2960 if (rdata->result != 0) {
2961 dequeue_mid(mid, rdata->result);
2962 return 0;
2963 }
2964
2965 iov_iter_bvec(&iter, WRITE | ITER_BVEC, bvec, npages, data_len);
4326ed2f
PS		 2966 } else if (buf_len >= data_offset + data_len) {
2967 /* read response payload is in buf */
2968 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
2969 iov.iov_base = buf + data_offset;
2970 iov.iov_len = data_len;
2971 iov_iter_kvec(&iter, WRITE | ITER_KVEC, &iov, 1, data_len);
2972 } else {
2973 /* read response payload cannot be in both buf and pages */
2974 WARN_ONCE(1, "buf can not contain only a part of read data");
2975 rdata->result = -EIO;
2976 dequeue_mid(mid, rdata->result);
2977 return 0;
2978 }
2979
2980 /* set up first iov for signature check */
2981 rdata->iov[0].iov_base = buf;
2982 rdata->iov[0].iov_len = 4;
2983 rdata->iov[1].iov_base = buf + 4;
2984 rdata->iov[1].iov_len = server->vals->read_rsp_size - 4;
2985 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
2986 rdata->iov[0].iov_base, server->vals->read_rsp_size);
2987
2988 length = rdata->copy_into_pages(server, rdata, &iter);
2989
2990 kfree(bvec);
2991
2992 if (length < 0)
2993 return length;
2994
2995 dequeue_mid(mid, false);
2996 return length;
2997}
2998
c42a6abe
PS		 2999static int
3000receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
3001{
3002 char *buf = server->smallbuf;
3003 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
3004 unsigned int npages;
3005 struct page **pages;
3006 unsigned int len;
1fc6ad2f 3007 unsigned int buflen = server->pdu_size;
c42a6abe
PS		 3008 int rc;
3009 int i = 0;
3010
1fc6ad2f 3011 len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
c42a6abe
PS		 3012 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
3013
3014 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
3015 if (rc < 0)
3016 return rc;
3017 server->total_read += rc;
3018
1fc6ad2f 3019 len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
93012bf9 3020 server->vals->read_rsp_size;
c42a6abe
PS		 3021 npages = DIV_ROUND_UP(len, PAGE_SIZE);
3022
3023 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
3024 if (!pages) {
3025 rc = -ENOMEM;
3026 goto discard_data;
3027 }
3028
3029 for (; i < npages; i++) {
3030 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
3031 if (!pages[i]) {
3032 rc = -ENOMEM;
3033 goto discard_data;
3034 }
3035 }
3036
3037 /* read read data into pages */
3038 rc = read_data_into_pages(server, pages, npages, len);
3039 if (rc)
3040 goto free_pages;
3041
350be257 3042 rc = cifs_discard_remaining_data(server);
c42a6abe
PS		 3043 if (rc)
3044 goto free_pages;
3045
1fc6ad2f 3046 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
c42a6abe
PS		 3047 pages, npages, len);
3048 if (rc)
3049 goto free_pages;
3050
3051 *mid = smb2_find_mid(server, buf);
3052 if (*mid == NULL)
3053 cifs_dbg(FYI, "mid not found\n");
3054 else {
3055 cifs_dbg(FYI, "mid found\n");
3056 (*mid)->decrypted = true;
3057 rc = handle_read_data(server, *mid, buf,
3058 server->vals->read_rsp_size,
3059 pages, npages, len);
3060 }
3061
3062free_pages:
3063 for (i = i - 1; i >= 0; i--)
3064 put_page(pages[i]);
3065 kfree(pages);
3066 return rc;
3067discard_data:
350be257 3068 cifs_discard_remaining_data(server);
c42a6abe
PS		 3069 goto free_pages;
3070}
3071
4326ed2f
PS		 3072static int
3073receive_encrypted_standard(struct TCP_Server_Info *server,
b24df3e3
RS		 3074 struct mid_q_entry **mids, char **bufs,
3075 int *num_mids)
4326ed2f 3076{
b24df3e3 3077 int ret, length;
4326ed2f 3078 char *buf = server->smallbuf;
b24df3e3
RS		 3079 char *tmpbuf;
3080 struct smb2_sync_hdr *shdr;
2e96467d 3081 unsigned int pdu_length = server->pdu_size;
4326ed2f
PS		 3082 unsigned int buf_size;
3083 struct mid_q_entry *mid_entry;
b24df3e3
RS		 3084 int next_is_large;
3085 char *next_buffer = NULL;
3086
3087 *num_mids = 0;
4326ed2f
PS		 3088
3089 /* switch to large buffer if too big for a small one */
1fc6ad2f 3090 if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
4326ed2f
PS		 3091 server->large_buf = true;
3092 memcpy(server->bigbuf, buf, server->total_read);
3093 buf = server->bigbuf;
3094 }
3095
3096 /* now read the rest */
3097 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
1fc6ad2f 3098 pdu_length - HEADER_SIZE(server) + 1);
4326ed2f
PS		 3099 if (length < 0)
3100 return length;
3101 server->total_read += length;
3102
1fc6ad2f 3103 buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
4326ed2f
PS		 3104 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
3105 if (length)
3106 return length;
3107
b24df3e3
RS		 3108 next_is_large = server->large_buf;
3109 one_more:
3110 shdr = (struct smb2_sync_hdr *)buf;
3111 if (shdr->NextCommand) {
3112 if (next_is_large) {
3113 tmpbuf = server->bigbuf;
3114 next_buffer = (char *)cifs_buf_get();
3115 } else {
3116 tmpbuf = server->smallbuf;
3117 next_buffer = (char *)cifs_small_buf_get();
3118 }
3119 memcpy(next_buffer,
3120 tmpbuf + le32_to_cpu(shdr->NextCommand),
3121 pdu_length - le32_to_cpu(shdr->NextCommand));
3122 }
3123
4326ed2f
PS		 3124 mid_entry = smb2_find_mid(server, buf);
3125 if (mid_entry == NULL)
3126 cifs_dbg(FYI, "mid not found\n");
3127 else {
3128 cifs_dbg(FYI, "mid found\n");
3129 mid_entry->decrypted = true;
b24df3e3 3130 mid_entry->resp_buf_size = server->pdu_size;
4326ed2f
PS		 3131 }
3132
b24df3e3
RS		 3133 if (*num_mids >= MAX_COMPOUND) {
3134 cifs_dbg(VFS, "too many PDUs in compound\n");
3135 return -1;
3136 }
3137 bufs[*num_mids] = buf;
3138 mids[(*num_mids)++] = mid_entry;
4326ed2f
PS		 3139
3140 if (mid_entry && mid_entry->handle)
b24df3e3
RS		 3141 ret = mid_entry->handle(server, mid_entry);
3142 else
3143 ret = cifs_handle_standard(server, mid_entry);
3144
3145 if (ret == 0 && shdr->NextCommand) {
3146 pdu_length -= le32_to_cpu(shdr->NextCommand);
3147 server->large_buf = next_is_large;
3148 if (next_is_large)
3149 server->bigbuf = next_buffer;
3150 else
3151 server->smallbuf = next_buffer;
3152
3153 buf += le32_to_cpu(shdr->NextCommand);
3154 goto one_more;
3155 }
4326ed2f 3156
b24df3e3 3157 return ret;
4326ed2f
PS		 3158}
3159
3160static int
b24df3e3
RS		 3161smb3_receive_transform(struct TCP_Server_Info *server,
3162 struct mid_q_entry **mids, char **bufs, int *num_mids)
4326ed2f
PS		 3163{
3164 char *buf = server->smallbuf;
2e96467d 3165 unsigned int pdu_length = server->pdu_size;
4326ed2f
PS		 3166 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
3167 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
3168
1fc6ad2f 3169 if (pdu_length < sizeof(struct smb2_transform_hdr) +
4326ed2f
PS		 3170 sizeof(struct smb2_sync_hdr)) {
3171 cifs_dbg(VFS, "Transform message is too small (%u)\n",
3172 pdu_length);
3173 cifs_reconnect(server);
3174 wake_up(&server->response_q);
3175 return -ECONNABORTED;
3176 }
3177
1fc6ad2f 3178 if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
4326ed2f
PS		 3179 cifs_dbg(VFS, "Transform message is broken\n");
3180 cifs_reconnect(server);
3181 wake_up(&server->response_q);
3182 return -ECONNABORTED;
3183 }
3184
b24df3e3 3185 /* TODO: add support for compounds containing READ. */
1fc6ad2f 3186 if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server))
b24df3e3 3187 return receive_encrypted_read(server, &mids[0]);
4326ed2f 3188
b24df3e3 3189 return receive_encrypted_standard(server, mids, bufs, num_mids);
4326ed2f
PS		 3190}
3191
3192int
3193smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
3194{
3195 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
3196
1fc6ad2f 3197 return handle_read_data(server, mid, buf, server->pdu_size,
4326ed2f
PS		 3198 NULL, 0, 0);
3199}
3200
8ce79ec3
RS		 3201static int
3202smb2_next_header(char *buf)
3203{
3204 struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf;
3205 struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
3206
3207 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM)
3208 return sizeof(struct smb2_transform_hdr) +
3209 le32_to_cpu(t_hdr->OriginalMessageSize);
3210
3211 return le32_to_cpu(hdr->NextCommand);
3212}
3213
53ef1016 3214struct smb_version_operations smb20_operations = {
027e8eec 3215 .compare_fids = smb2_compare_fids,
2dc7e1c0 3216 .setup_request = smb2_setup_request,
c95b8eed 3217 .setup_async_request = smb2_setup_async_request,
2dc7e1c0 3218 .check_receive = smb2_check_receive,
28ea5290
PS		 3219 .add_credits = smb2_add_credits,
3220 .set_credits = smb2_set_credits,
3221 .get_credits_field = smb2_get_credits_field,
3222 .get_credits = smb2_get_credits,
cb7e9eab 3223 .wait_mtu_credits = cifs_wait_mtu_credits,
2dc7e1c0 3224 .get_next_mid = smb2_get_next_mid,
09a4707e
PS		 3225 .read_data_offset = smb2_read_data_offset,
3226 .read_data_length = smb2_read_data_length,
3227 .map_error = map_smb2_to_linux_error,
093b2bda
PS		 3228 .find_mid = smb2_find_mid,
3229 .check_message = smb2_check_message,
3230 .dump_detail = smb2_dump_detail,
d60622eb
PS		 3231 .clear_stats = smb2_clear_stats,
3232 .print_stats = smb2_print_stats,
983c88a4 3233 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3234 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 3235 .downgrade_oplock = smb2_downgrade_oplock,
ec2e4523
PS		 3236 .need_neg = smb2_need_neg,
3237 .negotiate = smb2_negotiate,
3a3bab50
PS		 3238 .negotiate_wsize = smb2_negotiate_wsize,
3239 .negotiate_rsize = smb2_negotiate_rsize,
5478f9ba
PS		 3240 .sess_setup = SMB2_sess_setup,
3241 .logoff = SMB2_logoff,
faaf946a
PS		 3242 .tree_connect = SMB2_tcon,
3243 .tree_disconnect = SMB2_tdis,
34f62640 3244 .qfs_tcon = smb2_qfs_tcon,
2503a0db 3245 .is_path_accessible = smb2_is_path_accessible,
9094fad1
PS		 3246 .can_echo = smb2_can_echo,
3247 .echo = SMB2_echo,
be4cb9e3
PS		 3248 .query_path_info = smb2_query_path_info,
3249 .get_srv_inum = smb2_get_srv_inum,
b7546bc5 3250 .query_file_info = smb2_query_file_info,
c839ff24
PS		 3251 .set_path_size = smb2_set_path_size,
3252 .set_file_size = smb2_set_file_size,
1feeaac7 3253 .set_file_info = smb2_set_file_info,
64a5cfa6 3254 .set_compression = smb2_set_compression,
a0e73183
PS		 3255 .mkdir = smb2_mkdir,
3256 .mkdir_setinfo = smb2_mkdir_setinfo,
1a500f01 3257 .rmdir = smb2_rmdir,
cbe6f439 3258 .unlink = smb2_unlink,
35143eb5 3259 .rename = smb2_rename_path,
568798cc 3260 .create_hardlink = smb2_create_hardlink,
b42bf888 3261 .query_symlink = smb2_query_symlink,
5b23c97d
SP		 3262 .query_mf_symlink = smb3_query_mf_symlink,
3263 .create_mf_symlink = smb3_create_mf_symlink,
f0df737e
PS		 3264 .open = smb2_open_file,
3265 .set_fid = smb2_set_fid,
3266 .close = smb2_close_file,
7a5cfb19 3267 .flush = smb2_flush_file,
09a4707e 3268 .async_readv = smb2_async_readv,
33319141 3269 .async_writev = smb2_async_writev,
d8e05039 3270 .sync_read = smb2_sync_read,
009d3443 3271 .sync_write = smb2_sync_write,
d324f08d
PS		 3272 .query_dir_first = smb2_query_dir_first,
3273 .query_dir_next = smb2_query_dir_next,
3274 .close_dir = smb2_close_dir,
3275 .calc_smb_size = smb2_calc_size,
2e44b288 3276 .is_status_pending = smb2_is_status_pending,
511c54a2 3277 .is_session_expired = smb2_is_session_expired,
983c88a4 3278 .oplock_response = smb2_oplock_response,
6fc05c25 3279 .queryfs = smb2_queryfs,
f7ba7fe6
PS		 3280 .mand_lock = smb2_mand_lock,
3281 .mand_unlock_range = smb2_unlock_range,
b140799a 3282 .push_mand_locks = smb2_push_mandatory_locks,
b8c32dbb
PS		 3283 .get_lease_key = smb2_get_lease_key,
3284 .set_lease_key = smb2_set_lease_key,
3285 .new_lease_key = smb2_new_lease_key,
38107d45 3286 .calc_signature = smb2_calc_signature,
53ef1016
PS		 3287 .is_read_op = smb2_is_read_op,
3288 .set_oplock_level = smb2_set_oplock_level,
a41a28bd 3289 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 3290 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 3291 .copychunk_range = smb2_copychunk_range,
7f6c5008 3292 .wp_retry_size = smb2_wp_retry_size,
52755808 3293 .dir_needs_close = smb2_dir_needs_close,
9d49640a 3294 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3295 .select_sectype = smb2_select_sectype,
95907fea
RS		 3296#ifdef CONFIG_CIFS_XATTR
3297 .query_all_EAs = smb2_query_eas,
5517554e 3298 .set_EA = smb2_set_ea,
95907fea 3299#endif /* CIFS_XATTR */
2f1afe25
SP		 3300#ifdef CONFIG_CIFS_ACL
3301 .get_acl = get_smb2_acl,
3302 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 3303 .set_acl = set_smb2_acl,
2f1afe25 3304#endif /* CIFS_ACL */
8ce79ec3 3305 .next_header = smb2_next_header,
38107d45
SF		 3306};
3307
53ef1016
PS		 3308struct smb_version_operations smb21_operations = {
3309 .compare_fids = smb2_compare_fids,
3310 .setup_request = smb2_setup_request,
3311 .setup_async_request = smb2_setup_async_request,
3312 .check_receive = smb2_check_receive,
3313 .add_credits = smb2_add_credits,
3314 .set_credits = smb2_set_credits,
3315 .get_credits_field = smb2_get_credits_field,
3316 .get_credits = smb2_get_credits,
cb7e9eab 3317 .wait_mtu_credits = smb2_wait_mtu_credits,
53ef1016
PS		 3318 .get_next_mid = smb2_get_next_mid,
3319 .read_data_offset = smb2_read_data_offset,
3320 .read_data_length = smb2_read_data_length,
3321 .map_error = map_smb2_to_linux_error,
3322 .find_mid = smb2_find_mid,
3323 .check_message = smb2_check_message,
3324 .dump_detail = smb2_dump_detail,
3325 .clear_stats = smb2_clear_stats,
3326 .print_stats = smb2_print_stats,
3327 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3328 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 3329 .downgrade_oplock = smb2_downgrade_oplock,
53ef1016
PS		 3330 .need_neg = smb2_need_neg,
3331 .negotiate = smb2_negotiate,
3332 .negotiate_wsize = smb2_negotiate_wsize,
3333 .negotiate_rsize = smb2_negotiate_rsize,
3334 .sess_setup = SMB2_sess_setup,
3335 .logoff = SMB2_logoff,
3336 .tree_connect = SMB2_tcon,
3337 .tree_disconnect = SMB2_tdis,
34f62640 3338 .qfs_tcon = smb2_qfs_tcon,
53ef1016
PS		 3339 .is_path_accessible = smb2_is_path_accessible,
3340 .can_echo = smb2_can_echo,
3341 .echo = SMB2_echo,
3342 .query_path_info = smb2_query_path_info,
3343 .get_srv_inum = smb2_get_srv_inum,
3344 .query_file_info = smb2_query_file_info,
3345 .set_path_size = smb2_set_path_size,
3346 .set_file_size = smb2_set_file_size,
3347 .set_file_info = smb2_set_file_info,
64a5cfa6 3348 .set_compression = smb2_set_compression,
53ef1016
PS		 3349 .mkdir = smb2_mkdir,
3350 .mkdir_setinfo = smb2_mkdir_setinfo,
3351 .rmdir = smb2_rmdir,
3352 .unlink = smb2_unlink,
3353 .rename = smb2_rename_path,
3354 .create_hardlink = smb2_create_hardlink,
3355 .query_symlink = smb2_query_symlink,
c22870ea 3356 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 3357 .create_mf_symlink = smb3_create_mf_symlink,
53ef1016
PS		 3358 .open = smb2_open_file,
3359 .set_fid = smb2_set_fid,
3360 .close = smb2_close_file,
3361 .flush = smb2_flush_file,
3362 .async_readv = smb2_async_readv,
3363 .async_writev = smb2_async_writev,
3364 .sync_read = smb2_sync_read,
3365 .sync_write = smb2_sync_write,
3366 .query_dir_first = smb2_query_dir_first,
3367 .query_dir_next = smb2_query_dir_next,
3368 .close_dir = smb2_close_dir,
3369 .calc_smb_size = smb2_calc_size,
3370 .is_status_pending = smb2_is_status_pending,
511c54a2 3371 .is_session_expired = smb2_is_session_expired,
53ef1016
PS		 3372 .oplock_response = smb2_oplock_response,
3373 .queryfs = smb2_queryfs,
3374 .mand_lock = smb2_mand_lock,
3375 .mand_unlock_range = smb2_unlock_range,
3376 .push_mand_locks = smb2_push_mandatory_locks,
3377 .get_lease_key = smb2_get_lease_key,
3378 .set_lease_key = smb2_set_lease_key,
3379 .new_lease_key = smb2_new_lease_key,
3380 .calc_signature = smb2_calc_signature,
3381 .is_read_op = smb21_is_read_op,
3382 .set_oplock_level = smb21_set_oplock_level,
a41a28bd 3383 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 3384 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 3385 .copychunk_range = smb2_copychunk_range,
7f6c5008 3386 .wp_retry_size = smb2_wp_retry_size,
52755808 3387 .dir_needs_close = smb2_dir_needs_close,
834170c8 3388 .enum_snapshots = smb3_enum_snapshots,
9d49640a 3389 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3390 .select_sectype = smb2_select_sectype,
95907fea
RS		 3391#ifdef CONFIG_CIFS_XATTR
3392 .query_all_EAs = smb2_query_eas,
5517554e 3393 .set_EA = smb2_set_ea,
95907fea 3394#endif /* CIFS_XATTR */
2f1afe25
SP		 3395#ifdef CONFIG_CIFS_ACL
3396 .get_acl = get_smb2_acl,
3397 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 3398 .set_acl = set_smb2_acl,
2f1afe25 3399#endif /* CIFS_ACL */
8ce79ec3 3400 .next_header = smb2_next_header,
53ef1016 3401};
38107d45
SF		 3402
3403struct smb_version_operations smb30_operations = {
3404 .compare_fids = smb2_compare_fids,
3405 .setup_request = smb2_setup_request,
3406 .setup_async_request = smb2_setup_async_request,
3407 .check_receive = smb2_check_receive,
3408 .add_credits = smb2_add_credits,
3409 .set_credits = smb2_set_credits,
3410 .get_credits_field = smb2_get_credits_field,
3411 .get_credits = smb2_get_credits,
cb7e9eab 3412 .wait_mtu_credits = smb2_wait_mtu_credits,
38107d45
SF		 3413 .get_next_mid = smb2_get_next_mid,
3414 .read_data_offset = smb2_read_data_offset,
3415 .read_data_length = smb2_read_data_length,
3416 .map_error = map_smb2_to_linux_error,
3417 .find_mid = smb2_find_mid,
3418 .check_message = smb2_check_message,
3419 .dump_detail = smb2_dump_detail,
3420 .clear_stats = smb2_clear_stats,
3421 .print_stats = smb2_print_stats,
769ee6a4 3422 .dump_share_caps = smb2_dump_share_caps,
38107d45 3423 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3424 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 3425 .downgrade_oplock = smb2_downgrade_oplock,
38107d45
SF		 3426 .need_neg = smb2_need_neg,
3427 .negotiate = smb2_negotiate,
3428 .negotiate_wsize = smb2_negotiate_wsize,
3429 .negotiate_rsize = smb2_negotiate_rsize,
3430 .sess_setup = SMB2_sess_setup,
3431 .logoff = SMB2_logoff,
3432 .tree_connect = SMB2_tcon,
3433 .tree_disconnect = SMB2_tdis,
af6a12ea 3434 .qfs_tcon = smb3_qfs_tcon,
38107d45
SF		 3435 .is_path_accessible = smb2_is_path_accessible,
3436 .can_echo = smb2_can_echo,
3437 .echo = SMB2_echo,
3438 .query_path_info = smb2_query_path_info,
3439 .get_srv_inum = smb2_get_srv_inum,
3440 .query_file_info = smb2_query_file_info,
3441 .set_path_size = smb2_set_path_size,
3442 .set_file_size = smb2_set_file_size,
3443 .set_file_info = smb2_set_file_info,
64a5cfa6 3444 .set_compression = smb2_set_compression,
38107d45
SF		 3445 .mkdir = smb2_mkdir,
3446 .mkdir_setinfo = smb2_mkdir_setinfo,
3447 .rmdir = smb2_rmdir,
3448 .unlink = smb2_unlink,
3449 .rename = smb2_rename_path,
3450 .create_hardlink = smb2_create_hardlink,
b42bf888 3451 .query_symlink = smb2_query_symlink,
c22870ea 3452 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 3453 .create_mf_symlink = smb3_create_mf_symlink,
38107d45
SF		 3454 .open = smb2_open_file,
3455 .set_fid = smb2_set_fid,
3456 .close = smb2_close_file,
3457 .flush = smb2_flush_file,
3458 .async_readv = smb2_async_readv,
3459 .async_writev = smb2_async_writev,
3460 .sync_read = smb2_sync_read,
3461 .sync_write = smb2_sync_write,
3462 .query_dir_first = smb2_query_dir_first,
3463 .query_dir_next = smb2_query_dir_next,
3464 .close_dir = smb2_close_dir,
3465 .calc_smb_size = smb2_calc_size,
3466 .is_status_pending = smb2_is_status_pending,
511c54a2 3467 .is_session_expired = smb2_is_session_expired,
38107d45
SF		 3468 .oplock_response = smb2_oplock_response,
3469 .queryfs = smb2_queryfs,
3470 .mand_lock = smb2_mand_lock,
3471 .mand_unlock_range = smb2_unlock_range,
3472 .push_mand_locks = smb2_push_mandatory_locks,
3473 .get_lease_key = smb2_get_lease_key,
3474 .set_lease_key = smb2_set_lease_key,
3475 .new_lease_key = smb2_new_lease_key,
373512ec 3476 .generate_signingkey = generate_smb30signingkey,
38107d45 3477 .calc_signature = smb3_calc_signature,
b3152e2c 3478 .set_integrity = smb3_set_integrity,
53ef1016 3479 .is_read_op = smb21_is_read_op,
42873b0a 3480 .set_oplock_level = smb3_set_oplock_level,
f047390a
PS		 3481 .create_lease_buf = smb3_create_lease_buf,
3482 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 3483 .copychunk_range = smb2_copychunk_range,
ca9e7a1c 3484 .duplicate_extents = smb2_duplicate_extents,
ff1c038a 3485 .validate_negotiate = smb3_validate_negotiate,
7f6c5008 3486 .wp_retry_size = smb2_wp_retry_size,
52755808 3487 .dir_needs_close = smb2_dir_needs_close,
31742c5a 3488 .fallocate = smb3_fallocate,
834170c8 3489 .enum_snapshots = smb3_enum_snapshots,
026e93dc 3490 .init_transform_rq = smb3_init_transform_rq,
4326ed2f
PS		 3491 .is_transform_hdr = smb3_is_transform_hdr,
3492 .receive_transform = smb3_receive_transform,
9d49640a 3493 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3494 .select_sectype = smb2_select_sectype,
95907fea
RS		 3495#ifdef CONFIG_CIFS_XATTR
3496 .query_all_EAs = smb2_query_eas,
5517554e 3497 .set_EA = smb2_set_ea,
95907fea 3498#endif /* CIFS_XATTR */
2f1afe25
SP		 3499#ifdef CONFIG_CIFS_ACL
3500 .get_acl = get_smb2_acl,
3501 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 3502 .set_acl = set_smb2_acl,
2f1afe25 3503#endif /* CIFS_ACL */
8ce79ec3 3504 .next_header = smb2_next_header,
1080ef75
SF		 3505};
3506
aab1893d
SF		 3507struct smb_version_operations smb311_operations = {
3508 .compare_fids = smb2_compare_fids,
3509 .setup_request = smb2_setup_request,
3510 .setup_async_request = smb2_setup_async_request,
3511 .check_receive = smb2_check_receive,
3512 .add_credits = smb2_add_credits,
3513 .set_credits = smb2_set_credits,
3514 .get_credits_field = smb2_get_credits_field,
3515 .get_credits = smb2_get_credits,
3516 .wait_mtu_credits = smb2_wait_mtu_credits,
3517 .get_next_mid = smb2_get_next_mid,
3518 .read_data_offset = smb2_read_data_offset,
3519 .read_data_length = smb2_read_data_length,
3520 .map_error = map_smb2_to_linux_error,
3521 .find_mid = smb2_find_mid,
3522 .check_message = smb2_check_message,
3523 .dump_detail = smb2_dump_detail,
3524 .clear_stats = smb2_clear_stats,
3525 .print_stats = smb2_print_stats,
3526 .dump_share_caps = smb2_dump_share_caps,
3527 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3528 .handle_cancelled_mid = smb2_handle_cancelled_mid,
aab1893d
SF		 3529 .downgrade_oplock = smb2_downgrade_oplock,
3530 .need_neg = smb2_need_neg,
3531 .negotiate = smb2_negotiate,
3532 .negotiate_wsize = smb2_negotiate_wsize,
3533 .negotiate_rsize = smb2_negotiate_rsize,
3534 .sess_setup = SMB2_sess_setup,
3535 .logoff = SMB2_logoff,
3536 .tree_connect = SMB2_tcon,
3537 .tree_disconnect = SMB2_tdis,
3538 .qfs_tcon = smb3_qfs_tcon,
3539 .is_path_accessible = smb2_is_path_accessible,
3540 .can_echo = smb2_can_echo,
3541 .echo = SMB2_echo,
3542 .query_path_info = smb2_query_path_info,
3543 .get_srv_inum = smb2_get_srv_inum,
3544 .query_file_info = smb2_query_file_info,
3545 .set_path_size = smb2_set_path_size,
3546 .set_file_size = smb2_set_file_size,
3547 .set_file_info = smb2_set_file_info,
3548 .set_compression = smb2_set_compression,
3549 .mkdir = smb2_mkdir,
3550 .mkdir_setinfo = smb2_mkdir_setinfo,
bea851b8 3551 .posix_mkdir = smb311_posix_mkdir,
aab1893d
SF		 3552 .rmdir = smb2_rmdir,
3553 .unlink = smb2_unlink,
3554 .rename = smb2_rename_path,
3555 .create_hardlink = smb2_create_hardlink,
3556 .query_symlink = smb2_query_symlink,
3557 .query_mf_symlink = smb3_query_mf_symlink,
3558 .create_mf_symlink = smb3_create_mf_symlink,
3559 .open = smb2_open_file,
3560 .set_fid = smb2_set_fid,
3561 .close = smb2_close_file,
3562 .flush = smb2_flush_file,
3563 .async_readv = smb2_async_readv,
3564 .async_writev = smb2_async_writev,
3565 .sync_read = smb2_sync_read,
3566 .sync_write = smb2_sync_write,
3567 .query_dir_first = smb2_query_dir_first,
3568 .query_dir_next = smb2_query_dir_next,
3569 .close_dir = smb2_close_dir,
3570 .calc_smb_size = smb2_calc_size,
3571 .is_status_pending = smb2_is_status_pending,
511c54a2 3572 .is_session_expired = smb2_is_session_expired,
aab1893d 3573 .oplock_response = smb2_oplock_response,
2d304217 3574 .queryfs = smb311_queryfs,
aab1893d
SF		 3575 .mand_lock = smb2_mand_lock,
3576 .mand_unlock_range = smb2_unlock_range,
3577 .push_mand_locks = smb2_push_mandatory_locks,
3578 .get_lease_key = smb2_get_lease_key,
3579 .set_lease_key = smb2_set_lease_key,
3580 .new_lease_key = smb2_new_lease_key,
373512ec 3581 .generate_signingkey = generate_smb311signingkey,
aab1893d 3582 .calc_signature = smb3_calc_signature,
b3152e2c 3583 .set_integrity = smb3_set_integrity,
aab1893d
SF		 3584 .is_read_op = smb21_is_read_op,
3585 .set_oplock_level = smb3_set_oplock_level,
3586 .create_lease_buf = smb3_create_lease_buf,
3587 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 3588 .copychunk_range = smb2_copychunk_range,
02b16665 3589 .duplicate_extents = smb2_duplicate_extents,
aab1893d
SF		 3590/* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
3591 .wp_retry_size = smb2_wp_retry_size,
3592 .dir_needs_close = smb2_dir_needs_close,
3593 .fallocate = smb3_fallocate,
834170c8 3594 .enum_snapshots = smb3_enum_snapshots,
026e93dc 3595 .init_transform_rq = smb3_init_transform_rq,
4326ed2f
PS		 3596 .is_transform_hdr = smb3_is_transform_hdr,
3597 .receive_transform = smb3_receive_transform,
9d49640a 3598 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3599 .select_sectype = smb2_select_sectype,
95907fea
RS		 3600#ifdef CONFIG_CIFS_XATTR
3601 .query_all_EAs = smb2_query_eas,
5517554e 3602 .set_EA = smb2_set_ea,
95907fea 3603#endif /* CIFS_XATTR */
c1777df1
RS		 3604#ifdef CONFIG_CIFS_ACL
3605 .get_acl = get_smb2_acl,
3606 .get_acl_by_fid = get_smb2_acl_by_fid,
3607 .set_acl = set_smb2_acl,
3608#endif /* CIFS_ACL */
8ce79ec3 3609 .next_header = smb2_next_header,
aab1893d 3610};
aab1893d 3611
dd446b16
SF		 3612struct smb_version_values smb20_values = {
3613 .version_string = SMB20_VERSION_STRING,
3614 .protocol_id = SMB20_PROT_ID,
3615 .req_capabilities = 0, /* MBZ */
3616 .large_lock_type = 0,
3617 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3618 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3619 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3620 .header_size = sizeof(struct smb2_sync_hdr),
3621 .header_preamble_size = 0,
dd446b16
SF		 3622 .max_header_size = MAX_SMB2_HDR_SIZE,
3623 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3624 .lock_cmd = SMB2_LOCK,
3625 .cap_unix = 0,
3626 .cap_nt_find = SMB2_NT_FIND,
3627 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3628 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3629 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 3630 .create_lease_size = sizeof(struct create_lease),
dd446b16
SF		 3631};
3632
1080ef75
SF		 3633struct smb_version_values smb21_values = {
3634 .version_string = SMB21_VERSION_STRING,
e4aa25e7
SF		 3635 .protocol_id = SMB21_PROT_ID,
3636 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
3637 .large_lock_type = 0,
3638 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3639 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3640 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3641 .header_size = sizeof(struct smb2_sync_hdr),
3642 .header_preamble_size = 0,
e4aa25e7
SF		 3643 .max_header_size = MAX_SMB2_HDR_SIZE,
3644 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3645 .lock_cmd = SMB2_LOCK,
3646 .cap_unix = 0,
3647 .cap_nt_find = SMB2_NT_FIND,
3648 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3649 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3650 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 3651 .create_lease_size = sizeof(struct create_lease),
e4aa25e7
SF		 3652};
3653
9764c02f
SF		 3654struct smb_version_values smb3any_values = {
3655 .version_string = SMB3ANY_VERSION_STRING,
3656 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
f8015683 3657 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
9764c02f
SF		 3658 .large_lock_type = 0,
3659 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3660 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3661 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3662 .header_size = sizeof(struct smb2_sync_hdr),
3663 .header_preamble_size = 0,
9764c02f
SF		 3664 .max_header_size = MAX_SMB2_HDR_SIZE,
3665 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3666 .lock_cmd = SMB2_LOCK,
3667 .cap_unix = 0,
3668 .cap_nt_find = SMB2_NT_FIND,
3669 .cap_large_files = SMB2_LARGE_FILES,
3670 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3671 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3672 .create_lease_size = sizeof(struct create_lease_v2),
3673};
3674
3675struct smb_version_values smbdefault_values = {
3676 .version_string = SMBDEFAULT_VERSION_STRING,
3677 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
f8015683 3678 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
9764c02f
SF		 3679 .large_lock_type = 0,
3680 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3681 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3682 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3683 .header_size = sizeof(struct smb2_sync_hdr),
3684 .header_preamble_size = 0,
9764c02f
SF		 3685 .max_header_size = MAX_SMB2_HDR_SIZE,
3686 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3687 .lock_cmd = SMB2_LOCK,
3688 .cap_unix = 0,
3689 .cap_nt_find = SMB2_NT_FIND,
3690 .cap_large_files = SMB2_LARGE_FILES,
3691 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3692 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3693 .create_lease_size = sizeof(struct create_lease_v2),
3694};
3695
e4aa25e7
SF		 3696struct smb_version_values smb30_values = {
3697 .version_string = SMB30_VERSION_STRING,
3698 .protocol_id = SMB30_PROT_ID,
f8015683 3699 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
027e8eec
PS		 3700 .large_lock_type = 0,
3701 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3702 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3703 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3704 .header_size = sizeof(struct smb2_sync_hdr),
3705 .header_preamble_size = 0,
093b2bda 3706 .max_header_size = MAX_SMB2_HDR_SIZE,
09a4707e 3707 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2dc7e1c0 3708 .lock_cmd = SMB2_LOCK,
29e20f9c
PS		 3709 .cap_unix = 0,
3710 .cap_nt_find = SMB2_NT_FIND,
3711 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3712 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3713 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 3714 .create_lease_size = sizeof(struct create_lease_v2),
1080ef75 3715};
20b6d8b4
SF		 3716
3717struct smb_version_values smb302_values = {
3718 .version_string = SMB302_VERSION_STRING,
3719 .protocol_id = SMB302_PROT_ID,
f8015683 3720 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
20b6d8b4
SF		 3721 .large_lock_type = 0,
3722 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3723 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3724 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3725 .header_size = sizeof(struct smb2_sync_hdr),
3726 .header_preamble_size = 0,
20b6d8b4
SF		 3727 .max_header_size = MAX_SMB2_HDR_SIZE,
3728 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3729 .lock_cmd = SMB2_LOCK,
3730 .cap_unix = 0,
3731 .cap_nt_find = SMB2_NT_FIND,
3732 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3733 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3734 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 3735 .create_lease_size = sizeof(struct create_lease_v2),
20b6d8b4 3736};
5f7fbf73 3737
5f7fbf73
SF		 3738struct smb_version_values smb311_values = {
3739 .version_string = SMB311_VERSION_STRING,
3740 .protocol_id = SMB311_PROT_ID,
f8015683 3741 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
5f7fbf73
SF		 3742 .large_lock_type = 0,
3743 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3744 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3745 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3746 .header_size = sizeof(struct smb2_sync_hdr),
3747 .header_preamble_size = 0,
5f7fbf73
SF		 3748 .max_header_size = MAX_SMB2_HDR_SIZE,
3749 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3750 .lock_cmd = SMB2_LOCK,
3751 .cap_unix = 0,
3752 .cap_nt_find = SMB2_NT_FIND,
3753 .cap_large_files = SMB2_LARGE_FILES,
3754 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3755 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3756 .create_lease_size = sizeof(struct create_lease_v2),
3757};
Linux 6.x block layer and io_uring tree(s)