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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
[mirror_ubuntu-hirsute-kernel.git] / fs / cifs / smb2ops.c
CommitLineData
1080ef75
SF		 1/*
2 * SMB2 version specific operations
3 *
4 * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
5 *
6 * This library is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License v2 as published
8 * by the Free Software Foundation.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
3a3bab50 20#include <linux/pagemap.h>
6fc05c25 21#include <linux/vfs.h>
f29ebb47 22#include <linux/falloc.h>
026e93dc 23#include <linux/scatterlist.h>
4fa8e504 24#include <linux/uuid.h>
026e93dc 25#include <crypto/aead.h>
1080ef75 26#include "cifsglob.h"
2dc7e1c0
PS		 27#include "smb2pdu.h"
28#include "smb2proto.h"
28ea5290
PS		 29#include "cifsproto.h"
30#include "cifs_debug.h"
b42bf888 31#include "cifs_unicode.h"
2e44b288 32#include "smb2status.h"
6fc05c25 33#include "smb2glob.h"
834170c8 34#include "cifs_ioctl.h"
09902f8d 35#include "smbdirect.h"
28ea5290
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);
b340a4d4
SF		 77
78 /* eg found case where write overlapping reconnect messed up credits */
79 if (((optype & CIFS_OP_MASK) == CIFS_NEG_OP) && (*val != 0))
80 trace_smb3_reconnect_with_invalid_credits(server->CurrentMid,
81 server->hostname, *val);
82
28ea5290 83 *val += add;
141891f4
SF		 84 if (*val > 65000) {
85 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
86 printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
87 }
28ea5290 88 server->in_flight--;
ec2e4523 89 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
28ea5290 90 rc = change_conf(server);
983c88a4
PS		 91 /*
92 * Sometimes server returns 0 credits on oplock break ack - we need to
93 * rebalance credits in this case.
94 */
95 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
96 server->oplocks) {
97 if (server->credits > 1) {
98 server->credits--;
99 server->oplock_credits++;
100 }
101 }
28ea5290
PS		 102 spin_unlock(&server->req_lock);
103 wake_up(&server->request_q);
104 if (rc)
105 cifs_reconnect(server);
106}
107
108static void
109smb2_set_credits(struct TCP_Server_Info *server, const int val)
110{
111 spin_lock(&server->req_lock);
112 server->credits = val;
9e1a37da
SF		 113 if (val == 1)
114 server->reconnect_instance++;
28ea5290 115 spin_unlock(&server->req_lock);
6e4d3bbe
SF		 116 /* don't log while holding the lock */
117 if (val == 1)
118 cifs_dbg(FYI, "set credits to 1 due to smb2 reconnect\n");
28ea5290
PS		 119}
120
121static int *
122smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
123{
124 switch (optype) {
125 case CIFS_ECHO_OP:
126 return &server->echo_credits;
127 case CIFS_OBREAK_OP:
128 return &server->oplock_credits;
129 default:
130 return &server->credits;
131 }
132}
133
134static unsigned int
135smb2_get_credits(struct mid_q_entry *mid)
136{
49f466bd 137 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)mid->resp_buf;
31473fc4
PS		 138
139 return le16_to_cpu(shdr->CreditRequest);
28ea5290 140}
2dc7e1c0 141
cb7e9eab
PS		 142static int
143smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
144 unsigned int *num, unsigned int *credits)
145{
146 int rc = 0;
147 unsigned int scredits;
148
149 spin_lock(&server->req_lock);
150 while (1) {
151 if (server->credits <= 0) {
152 spin_unlock(&server->req_lock);
153 cifs_num_waiters_inc(server);
154 rc = wait_event_killable(server->request_q,
155 has_credits(server, &server->credits));
156 cifs_num_waiters_dec(server);
157 if (rc)
158 return rc;
159 spin_lock(&server->req_lock);
160 } else {
161 if (server->tcpStatus == CifsExiting) {
162 spin_unlock(&server->req_lock);
163 return -ENOENT;
164 }
165
166 scredits = server->credits;
167 /* can deadlock with reopen */
168 if (scredits == 1) {
169 *num = SMB2_MAX_BUFFER_SIZE;
170 *credits = 0;
171 break;
172 }
173
174 /* leave one credit for a possible reopen */
175 scredits--;
176 *num = min_t(unsigned int, size,
177 scredits * SMB2_MAX_BUFFER_SIZE);
178
179 *credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
180 server->credits -= *credits;
181 server->in_flight++;
182 break;
183 }
184 }
185 spin_unlock(&server->req_lock);
186 return rc;
187}
188
2dc7e1c0
PS		 189static __u64
190smb2_get_next_mid(struct TCP_Server_Info *server)
191{
192 __u64 mid;
193 /* for SMB2 we need the current value */
194 spin_lock(&GlobalMid_Lock);
195 mid = server->CurrentMid++;
196 spin_unlock(&GlobalMid_Lock);
197 return mid;
198}
1080ef75 199
093b2bda
PS		 200static struct mid_q_entry *
201smb2_find_mid(struct TCP_Server_Info *server, char *buf)
202{
203 struct mid_q_entry *mid;
49f466bd 204 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
31473fc4 205 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
093b2bda 206
31473fc4 207 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
373512ec
SF		 208 cifs_dbg(VFS, "encrypted frame parsing not supported yet");
209 return NULL;
210 }
211
093b2bda
PS		 212 spin_lock(&GlobalMid_Lock);
213 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
9235d098 214 if ((mid->mid == wire_mid) &&
093b2bda 215 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
31473fc4 216 (mid->command == shdr->Command)) {
696e420b 217 kref_get(&mid->refcount);
093b2bda
PS		 218 spin_unlock(&GlobalMid_Lock);
219 return mid;
220 }
221 }
222 spin_unlock(&GlobalMid_Lock);
223 return NULL;
224}
225
226static void
14547f7d 227smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
093b2bda
PS		 228{
229#ifdef CONFIG_CIFS_DEBUG2
49f466bd 230 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
093b2bda 231
f96637be 232 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
31473fc4
PS		 233 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
234 shdr->ProcessId);
14547f7d 235 cifs_dbg(VFS, "smb buf %p len %u\n", buf,
71992e62 236 server->ops->calc_smb_size(buf, server));
093b2bda
PS		 237#endif
238}
239
ec2e4523
PS		 240static bool
241smb2_need_neg(struct TCP_Server_Info *server)
242{
243 return server->max_read == 0;
244}
245
246static int
247smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
248{
249 int rc;
250 ses->server->CurrentMid = 0;
251 rc = SMB2_negotiate(xid, ses);
252 /* BB we probably don't need to retry with modern servers */
253 if (rc == -EAGAIN)
254 rc = -EHOSTDOWN;
255 return rc;
256}
257
3a3bab50
PS		 258static unsigned int
259smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
260{
261 struct TCP_Server_Info *server = tcon->ses->server;
262 unsigned int wsize;
263
264 /* start with specified wsize, or default */
265 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
266 wsize = min_t(unsigned int, wsize, server->max_write);
09902f8d 267#ifdef CONFIG_CIFS_SMB_DIRECT
bb4c0419
LL		 268 if (server->rdma) {
269 if (server->sign)
270 wsize = min_t(unsigned int,
271 wsize, server->smbd_conn->max_fragmented_send_size);
272 else
273 wsize = min_t(unsigned int,
09902f8d 274 wsize, server->smbd_conn->max_readwrite_size);
bb4c0419 275 }
09902f8d 276#endif
cb7e9eab
PS		 277 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
278 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 279
3a3bab50
PS		 280 return wsize;
281}
282
3d621230
SF		 283static unsigned int
284smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
285{
286 struct TCP_Server_Info *server = tcon->ses->server;
287 unsigned int wsize;
288
289 /* start with specified wsize, or default */
290 wsize = volume_info->wsize ? volume_info->wsize : SMB3_DEFAULT_IOSIZE;
291 wsize = min_t(unsigned int, wsize, server->max_write);
292#ifdef CONFIG_CIFS_SMB_DIRECT
293 if (server->rdma) {
294 if (server->sign)
295 wsize = min_t(unsigned int,
296 wsize, server->smbd_conn->max_fragmented_send_size);
297 else
298 wsize = min_t(unsigned int,
299 wsize, server->smbd_conn->max_readwrite_size);
300 }
301#endif
302 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
303 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
304
305 return wsize;
306}
307
3a3bab50
PS		 308static unsigned int
309smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
310{
311 struct TCP_Server_Info *server = tcon->ses->server;
312 unsigned int rsize;
313
314 /* start with specified rsize, or default */
315 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
316 rsize = min_t(unsigned int, rsize, server->max_read);
09902f8d 317#ifdef CONFIG_CIFS_SMB_DIRECT
bb4c0419
LL		 318 if (server->rdma) {
319 if (server->sign)
320 rsize = min_t(unsigned int,
321 rsize, server->smbd_conn->max_fragmented_recv_size);
322 else
323 rsize = min_t(unsigned int,
09902f8d 324 rsize, server->smbd_conn->max_readwrite_size);
bb4c0419 325 }
09902f8d 326#endif
bed9da02
PS		 327
328 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
329 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 330
3a3bab50
PS		 331 return rsize;
332}
333
3d621230
SF		 334static unsigned int
335smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
336{
337 struct TCP_Server_Info *server = tcon->ses->server;
338 unsigned int rsize;
339
340 /* start with specified rsize, or default */
341 rsize = volume_info->rsize ? volume_info->rsize : SMB3_DEFAULT_IOSIZE;
342 rsize = min_t(unsigned int, rsize, server->max_read);
343#ifdef CONFIG_CIFS_SMB_DIRECT
344 if (server->rdma) {
345 if (server->sign)
346 rsize = min_t(unsigned int,
347 rsize, server->smbd_conn->max_fragmented_recv_size);
348 else
349 rsize = min_t(unsigned int,
350 rsize, server->smbd_conn->max_readwrite_size);
351 }
352#endif
353
354 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
355 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
356
357 return rsize;
358}
fe856be4
AA		 359
360static int
361parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
362 size_t buf_len,
363 struct cifs_server_iface **iface_list,
364 size_t *iface_count)
365{
366 struct network_interface_info_ioctl_rsp *p;
367 struct sockaddr_in *addr4;
368 struct sockaddr_in6 *addr6;
369 struct iface_info_ipv4 *p4;
370 struct iface_info_ipv6 *p6;
371 struct cifs_server_iface *info;
372 ssize_t bytes_left;
373 size_t next = 0;
374 int nb_iface = 0;
375 int rc = 0;
376
377 *iface_list = NULL;
378 *iface_count = 0;
379
380 /*
381 * Fist pass: count and sanity check
382 */
383
384 bytes_left = buf_len;
385 p = buf;
386 while (bytes_left >= sizeof(*p)) {
387 nb_iface++;
388 next = le32_to_cpu(p->Next);
389 if (!next) {
390 bytes_left -= sizeof(*p);
391 break;
392 }
393 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
394 bytes_left -= next;
395 }
396
397 if (!nb_iface) {
398 cifs_dbg(VFS, "%s: malformed interface info\n", __func__);
399 rc = -EINVAL;
400 goto out;
401 }
402
403 if (bytes_left || p->Next)
404 cifs_dbg(VFS, "%s: incomplete interface info\n", __func__);
405
406
407 /*
408 * Second pass: extract info to internal structure
409 */
410
411 *iface_list = kcalloc(nb_iface, sizeof(**iface_list), GFP_KERNEL);
412 if (!*iface_list) {
413 rc = -ENOMEM;
414 goto out;
415 }
416
417 info = *iface_list;
418 bytes_left = buf_len;
419 p = buf;
420 while (bytes_left >= sizeof(*p)) {
421 info->speed = le64_to_cpu(p->LinkSpeed);
422 info->rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE);
423 info->rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE);
424
425 cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, *iface_count);
426 cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed);
427 cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__,
428 le32_to_cpu(p->Capability));
429
430 switch (p->Family) {
431 /*
432 * The kernel and wire socket structures have the same
433 * layout and use network byte order but make the
434 * conversion explicit in case either one changes.
435 */
436 case INTERNETWORK:
437 addr4 = (struct sockaddr_in *)&info->sockaddr;
438 p4 = (struct iface_info_ipv4 *)p->Buffer;
439 addr4->sin_family = AF_INET;
440 memcpy(&addr4->sin_addr, &p4->IPv4Address, 4);
441
442 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
443 addr4->sin_port = cpu_to_be16(CIFS_PORT);
444
445 cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__,
446 &addr4->sin_addr);
447 break;
448 case INTERNETWORKV6:
449 addr6 = (struct sockaddr_in6 *)&info->sockaddr;
450 p6 = (struct iface_info_ipv6 *)p->Buffer;
451 addr6->sin6_family = AF_INET6;
452 memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16);
453
454 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
455 addr6->sin6_flowinfo = 0;
456 addr6->sin6_scope_id = 0;
457 addr6->sin6_port = cpu_to_be16(CIFS_PORT);
458
459 cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__,
460 &addr6->sin6_addr);
461 break;
462 default:
463 cifs_dbg(VFS,
464 "%s: skipping unsupported socket family\n",
465 __func__);
466 goto next_iface;
467 }
468
469 (*iface_count)++;
470 info++;
471next_iface:
472 next = le32_to_cpu(p->Next);
473 if (!next)
474 break;
475 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
476 bytes_left -= next;
477 }
478
479 if (!*iface_count) {
480 rc = -EINVAL;
481 goto out;
482 }
483
484out:
485 if (rc) {
486 kfree(*iface_list);
487 *iface_count = 0;
488 *iface_list = NULL;
489 }
490 return rc;
491}
492
493
c481e9fe
SF		 494static int
495SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
496{
497 int rc;
498 unsigned int ret_data_len = 0;
fe856be4
AA		 499 struct network_interface_info_ioctl_rsp *out_buf = NULL;
500 struct cifs_server_iface *iface_list;
501 size_t iface_count;
502 struct cifs_ses *ses = tcon->ses;
c481e9fe
SF		 503
504 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
505 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
506 NULL /* no data input */, 0 /* no data input */,
507 (char **)&out_buf, &ret_data_len);
c3ed4402
SF		 508 if (rc == -EOPNOTSUPP) {
509 cifs_dbg(FYI,
510 "server does not support query network interfaces\n");
511 goto out;
512 } else if (rc != 0) {
9ffc5412 513 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
fe856be4 514 goto out;
9ffc5412 515 }
fe856be4
AA		 516
517 rc = parse_server_interfaces(out_buf, ret_data_len,
518 &iface_list, &iface_count);
519 if (rc)
520 goto out;
521
522 spin_lock(&ses->iface_lock);
523 kfree(ses->iface_list);
524 ses->iface_list = iface_list;
525 ses->iface_count = iface_count;
526 ses->iface_last_update = jiffies;
527 spin_unlock(&ses->iface_lock);
528
529out:
24df1483 530 kfree(out_buf);
c481e9fe
SF		 531 return rc;
532}
c481e9fe 533
9da6ec77
RS		 534static void
535smb2_close_cached_fid(struct kref *ref)
a93864d9 536{
9da6ec77
RS		 537 struct cached_fid *cfid = container_of(ref, struct cached_fid,
538 refcount);
539
a93864d9
RS		 540 if (cfid->is_valid) {
541 cifs_dbg(FYI, "clear cached root file handle\n");
542 SMB2_close(0, cfid->tcon, cfid->fid->persistent_fid,
543 cfid->fid->volatile_fid);
544 cfid->is_valid = false;
545 }
9da6ec77
RS		 546}
547
548void close_shroot(struct cached_fid *cfid)
549{
550 mutex_lock(&cfid->fid_mutex);
551 kref_put(&cfid->refcount, smb2_close_cached_fid);
a93864d9
RS		 552 mutex_unlock(&cfid->fid_mutex);
553}
554
9da6ec77
RS		 555void
556smb2_cached_lease_break(struct work_struct *work)
557{
558 struct cached_fid *cfid = container_of(work,
559 struct cached_fid, lease_break);
560
561 close_shroot(cfid);
562}
563
3d4ef9a1
SF		 564/*
565 * Open the directory at the root of a share
566 */
567int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
568{
569 struct cifs_open_parms oparams;
570 int rc;
571 __le16 srch_path = 0; /* Null - since an open of top of share */
a93864d9 572 u8 oplock = SMB2_OPLOCK_LEVEL_II;
3d4ef9a1 573
a93864d9
RS		 574 mutex_lock(&tcon->crfid.fid_mutex);
575 if (tcon->crfid.is_valid) {
3d4ef9a1 576 cifs_dbg(FYI, "found a cached root file handle\n");
a93864d9 577 memcpy(pfid, tcon->crfid.fid, sizeof(struct cifs_fid));
9da6ec77 578 kref_get(&tcon->crfid.refcount);
a93864d9 579 mutex_unlock(&tcon->crfid.fid_mutex);
3d4ef9a1
SF		 580 return 0;
581 }
582
583 oparams.tcon = tcon;
584 oparams.create_options = 0;
585 oparams.desired_access = FILE_READ_ATTRIBUTES;
586 oparams.disposition = FILE_OPEN;
587 oparams.fid = pfid;
588 oparams.reconnect = false;
589
9d874c36 590 rc = SMB2_open(xid, &oparams, &srch_path, &oplock, NULL, NULL, NULL);
3d4ef9a1 591 if (rc == 0) {
a93864d9
RS		 592 memcpy(tcon->crfid.fid, pfid, sizeof(struct cifs_fid));
593 tcon->crfid.tcon = tcon;
594 tcon->crfid.is_valid = true;
9da6ec77
RS		 595 kref_init(&tcon->crfid.refcount);
596 kref_get(&tcon->crfid.refcount);
3d4ef9a1 597 }
a93864d9 598 mutex_unlock(&tcon->crfid.fid_mutex);
3d4ef9a1
SF		 599 return rc;
600}
601
af6a12ea
SF		 602static void
603smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
604{
605 int rc;
606 __le16 srch_path = 0; /* Null - open root of share */
607 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
608 struct cifs_open_parms oparms;
609 struct cifs_fid fid;
3d4ef9a1 610 bool no_cached_open = tcon->nohandlecache;
af6a12ea
SF		 611
612 oparms.tcon = tcon;
613 oparms.desired_access = FILE_READ_ATTRIBUTES;
614 oparms.disposition = FILE_OPEN;
615 oparms.create_options = 0;
616 oparms.fid = &fid;
617 oparms.reconnect = false;
618
3d4ef9a1 619 if (no_cached_open)
9d874c36
RS		 620 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
621 NULL);
3d4ef9a1
SF		 622 else
623 rc = open_shroot(xid, tcon, &fid);
624
af6a12ea
SF		 625 if (rc)
626 return;
627
c481e9fe 628 SMB3_request_interfaces(xid, tcon);
c481e9fe 629
af6a12ea
SF		 630 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
631 FS_ATTRIBUTE_INFORMATION);
632 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
633 FS_DEVICE_INFORMATION);
21ba3845
SF		 634 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
635 FS_VOLUME_INFORMATION);
af6a12ea
SF		 636 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
637 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
3d4ef9a1
SF		 638 if (no_cached_open)
639 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
9da6ec77
RS		 640 else
641 close_shroot(&tcon->crfid);
642
af6a12ea
SF		 643 return;
644}
645
34f62640
SF		 646static void
647smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
648{
649 int rc;
650 __le16 srch_path = 0; /* Null - open root of share */
651 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
652 struct cifs_open_parms oparms;
653 struct cifs_fid fid;
654
655 oparms.tcon = tcon;
656 oparms.desired_access = FILE_READ_ATTRIBUTES;
657 oparms.disposition = FILE_OPEN;
658 oparms.create_options = 0;
659 oparms.fid = &fid;
660 oparms.reconnect = false;
661
9d874c36 662 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
34f62640
SF		 663 if (rc)
664 return;
665
2167114c
SF		 666 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
667 FS_ATTRIBUTE_INFORMATION);
668 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
669 FS_DEVICE_INFORMATION);
34f62640
SF		 670 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
671 return;
672}
673
2503a0db
PS		 674static int
675smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
676 struct cifs_sb_info *cifs_sb, const char *full_path)
677{
678 int rc;
2503a0db 679 __le16 *utf16_path;
2e44b288 680 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 681 struct cifs_open_parms oparms;
682 struct cifs_fid fid;
2503a0db 683
a93864d9 684 if ((*full_path == 0) && tcon->crfid.is_valid)
3d4ef9a1
SF		 685 return 0;
686
2503a0db
PS		 687 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
688 if (!utf16_path)
689 return -ENOMEM;
690
064f6047
PS		 691 oparms.tcon = tcon;
692 oparms.desired_access = FILE_READ_ATTRIBUTES;
693 oparms.disposition = FILE_OPEN;
5e19697b
SF		 694 if (backup_cred(cifs_sb))
695 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
696 else
697 oparms.create_options = 0;
064f6047 698 oparms.fid = &fid;
9cbc0b73 699 oparms.reconnect = false;
064f6047 700
9d874c36 701 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2503a0db
PS		 702 if (rc) {
703 kfree(utf16_path);
704 return rc;
705 }
706
064f6047 707 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2503a0db
PS		 708 kfree(utf16_path);
709 return rc;
710}
711
be4cb9e3
PS		 712static int
713smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
714 struct cifs_sb_info *cifs_sb, const char *full_path,
715 u64 *uniqueid, FILE_ALL_INFO *data)
716{
717 *uniqueid = le64_to_cpu(data->IndexNumber);
718 return 0;
719}
720
b7546bc5
PS		 721static int
722smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
723 struct cifs_fid *fid, FILE_ALL_INFO *data)
724{
725 int rc;
726 struct smb2_file_all_info *smb2_data;
727
1bbe4997 728 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
b7546bc5
PS		 729 GFP_KERNEL);
730 if (smb2_data == NULL)
731 return -ENOMEM;
732
733 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
734 smb2_data);
735 if (!rc)
736 move_smb2_info_to_cifs(data, smb2_data);
737 kfree(smb2_data);
738 return rc;
739}
740
1368f155 741#ifdef CONFIG_CIFS_XATTR
95907fea
RS		 742static ssize_t
743move_smb2_ea_to_cifs(char *dst, size_t dst_size,
744 struct smb2_file_full_ea_info *src, size_t src_size,
745 const unsigned char *ea_name)
746{
747 int rc = 0;
748 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
749 char *name, *value;
0c5d6cb6 750 size_t buf_size = dst_size;
95907fea
RS		 751 size_t name_len, value_len, user_name_len;
752
753 while (src_size > 0) {
754 name = &src->ea_data[0];
755 name_len = (size_t)src->ea_name_length;
756 value = &src->ea_data[src->ea_name_length + 1];
757 value_len = (size_t)le16_to_cpu(src->ea_value_length);
758
759 if (name_len == 0) {
760 break;
761 }
762
763 if (src_size < 8 + name_len + 1 + value_len) {
764 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
765 rc = -EIO;
766 goto out;
767 }
768
769 if (ea_name) {
770 if (ea_name_len == name_len &&
771 memcmp(ea_name, name, name_len) == 0) {
772 rc = value_len;
773 if (dst_size == 0)
774 goto out;
775 if (dst_size < value_len) {
776 rc = -ERANGE;
777 goto out;
778 }
779 memcpy(dst, value, value_len);
780 goto out;
781 }
782 } else {
783 /* 'user.' plus a terminating null */
784 user_name_len = 5 + 1 + name_len;
785
0c5d6cb6
RS		 786 if (buf_size == 0) {
787 /* skip copy - calc size only */
788 rc += user_name_len;
789 } else if (dst_size >= user_name_len) {
95907fea
RS		 790 dst_size -= user_name_len;
791 memcpy(dst, "user.", 5);
792 dst += 5;
793 memcpy(dst, src->ea_data, name_len);
794 dst += name_len;
795 *dst = 0;
796 ++dst;
0c5d6cb6 797 rc += user_name_len;
95907fea
RS		 798 } else {
799 /* stop before overrun buffer */
800 rc = -ERANGE;
801 break;
802 }
803 }
804
805 if (!src->next_entry_offset)
806 break;
807
808 if (src_size < le32_to_cpu(src->next_entry_offset)) {
809 /* stop before overrun buffer */
810 rc = -ERANGE;
811 break;
812 }
813 src_size -= le32_to_cpu(src->next_entry_offset);
814 src = (void *)((char *)src +
815 le32_to_cpu(src->next_entry_offset));
816 }
817
818 /* didn't find the named attribute */
819 if (ea_name)
820 rc = -ENODATA;
821
822out:
823 return (ssize_t)rc;
824}
825
826static ssize_t
827smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
828 const unsigned char *path, const unsigned char *ea_name,
829 char *ea_data, size_t buf_size,
830 struct cifs_sb_info *cifs_sb)
831{
832 int rc;
833 __le16 *utf16_path;
834 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
835 struct cifs_open_parms oparms;
836 struct cifs_fid fid;
837 struct smb2_file_full_ea_info *smb2_data;
7cb3def4 838 int ea_buf_size = SMB2_MIN_EA_BUF;
95907fea
RS		 839
840 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
841 if (!utf16_path)
842 return -ENOMEM;
843
844 oparms.tcon = tcon;
845 oparms.desired_access = FILE_READ_EA;
846 oparms.disposition = FILE_OPEN;
5e19697b
SF		 847 if (backup_cred(cifs_sb))
848 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
849 else
850 oparms.create_options = 0;
95907fea
RS		 851 oparms.fid = &fid;
852 oparms.reconnect = false;
853
9d874c36 854 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
95907fea
RS		 855 kfree(utf16_path);
856 if (rc) {
857 cifs_dbg(FYI, "open failed rc=%d\n", rc);
858 return rc;
859 }
860
7cb3def4
RS		 861 while (1) {
862 smb2_data = kzalloc(ea_buf_size, GFP_KERNEL);
863 if (smb2_data == NULL) {
864 SMB2_close(xid, tcon, fid.persistent_fid,
865 fid.volatile_fid);
866 return -ENOMEM;
867 }
868
869 rc = SMB2_query_eas(xid, tcon, fid.persistent_fid,
870 fid.volatile_fid,
871 ea_buf_size, smb2_data);
872
873 if (rc != -E2BIG)
874 break;
875
876 kfree(smb2_data);
877 ea_buf_size <<= 1;
878
879 if (ea_buf_size > SMB2_MAX_EA_BUF) {
880 cifs_dbg(VFS, "EA size is too large\n");
881 SMB2_close(xid, tcon, fid.persistent_fid,
882 fid.volatile_fid);
883 return -ENOMEM;
884 }
95907fea
RS		 885 }
886
95907fea
RS		 887 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
888
ae2cd7fb
PA		 889 /*
890 * If ea_name is NULL (listxattr) and there are no EAs, return 0 as it's
891 * not an error. Otherwise, the specified ea_name was not found.
892 */
95907fea
RS		 893 if (!rc)
894 rc = move_smb2_ea_to_cifs(ea_data, buf_size, smb2_data,
895 SMB2_MAX_EA_BUF, ea_name);
ae2cd7fb
PA		 896 else if (!ea_name && rc == -ENODATA)
897 rc = 0;
95907fea
RS		 898
899 kfree(smb2_data);
900 return rc;
901}
902
5517554e
RS		 903
904static int
905smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
906 const char *path, const char *ea_name, const void *ea_value,
907 const __u16 ea_value_len, const struct nls_table *nls_codepage,
908 struct cifs_sb_info *cifs_sb)
909{
910 int rc;
911 __le16 *utf16_path;
912 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
913 struct cifs_open_parms oparms;
914 struct cifs_fid fid;
915 struct smb2_file_full_ea_info *ea;
916 int ea_name_len = strlen(ea_name);
917 int len;
918
919 if (ea_name_len > 255)
920 return -EINVAL;
921
922 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
923 if (!utf16_path)
924 return -ENOMEM;
925
926 oparms.tcon = tcon;
927 oparms.desired_access = FILE_WRITE_EA;
928 oparms.disposition = FILE_OPEN;
5e19697b
SF		 929 if (backup_cred(cifs_sb))
930 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
931 else
932 oparms.create_options = 0;
5517554e
RS		 933 oparms.fid = &fid;
934 oparms.reconnect = false;
935
9d874c36 936 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
5517554e
RS		 937 kfree(utf16_path);
938 if (rc) {
939 cifs_dbg(FYI, "open failed rc=%d\n", rc);
940 return rc;
941 }
942
943 len = sizeof(ea) + ea_name_len + ea_value_len + 1;
944 ea = kzalloc(len, GFP_KERNEL);
945 if (ea == NULL) {
946 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
947 return -ENOMEM;
948 }
949
950 ea->ea_name_length = ea_name_len;
951 ea->ea_value_length = cpu_to_le16(ea_value_len);
952 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
953 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
954
955 rc = SMB2_set_ea(xid, tcon, fid.persistent_fid, fid.volatile_fid, ea,
956 len);
6aa0c114
PA		 957 kfree(ea);
958
5517554e
RS		 959 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
960
961 return rc;
962}
1368f155 963#endif
5517554e 964
9094fad1
PS		 965static bool
966smb2_can_echo(struct TCP_Server_Info *server)
967{
968 return server->echoes;
969}
970
d60622eb
PS		 971static void
972smb2_clear_stats(struct cifs_tcon *tcon)
973{
d60622eb
PS		 974 int i;
975 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
976 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
977 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
978 }
d60622eb
PS		 979}
980
769ee6a4
SF		 981static void
982smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
983{
984 seq_puts(m, "\n\tShare Capabilities:");
985 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
986 seq_puts(m, " DFS,");
987 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
988 seq_puts(m, " CONTINUOUS AVAILABILITY,");
989 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
990 seq_puts(m, " SCALEOUT,");
991 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
992 seq_puts(m, " CLUSTER,");
993 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
994 seq_puts(m, " ASYMMETRIC,");
995 if (tcon->capabilities == 0)
996 seq_puts(m, " None");
af6a12ea
SF		 997 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
998 seq_puts(m, " Aligned,");
999 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
1000 seq_puts(m, " Partition Aligned,");
1001 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
1002 seq_puts(m, " SSD,");
1003 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
1004 seq_puts(m, " TRIM-support,");
1005
769ee6a4 1006 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
e0386e44 1007 seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
af6a12ea
SF		 1008 if (tcon->perf_sector_size)
1009 seq_printf(m, "\tOptimal sector size: 0x%x",
1010 tcon->perf_sector_size);
e0386e44 1011 seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
769ee6a4
SF		 1012}
1013
d60622eb
PS		 1014static void
1015smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
1016{
d60622eb
PS		 1017 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
1018 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
1995d28f
SF		 1019
1020 /*
1021 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
1022 * totals (requests sent) since those SMBs are per-session not per tcon
1023 */
52ce1ac4
SF		 1024 seq_printf(m, "\nBytes read: %llu Bytes written: %llu",
1025 (long long)(tcon->bytes_read),
1026 (long long)(tcon->bytes_written));
fae8044c
SF		 1027 seq_printf(m, "\nOpen files: %d total (local), %d open on server",
1028 atomic_read(&tcon->num_local_opens),
1029 atomic_read(&tcon->num_remote_opens));
1995d28f 1030 seq_printf(m, "\nTreeConnects: %d total %d failed",
d60622eb
PS		 1031 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
1032 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
1995d28f 1033 seq_printf(m, "\nTreeDisconnects: %d total %d failed",
d60622eb
PS		 1034 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
1035 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
1995d28f 1036 seq_printf(m, "\nCreates: %d total %d failed",
d60622eb
PS		 1037 atomic_read(&sent[SMB2_CREATE_HE]),
1038 atomic_read(&failed[SMB2_CREATE_HE]));
1995d28f 1039 seq_printf(m, "\nCloses: %d total %d failed",
d60622eb
PS		 1040 atomic_read(&sent[SMB2_CLOSE_HE]),
1041 atomic_read(&failed[SMB2_CLOSE_HE]));
1995d28f 1042 seq_printf(m, "\nFlushes: %d total %d failed",
d60622eb
PS		 1043 atomic_read(&sent[SMB2_FLUSH_HE]),
1044 atomic_read(&failed[SMB2_FLUSH_HE]));
1995d28f 1045 seq_printf(m, "\nReads: %d total %d failed",
d60622eb
PS		 1046 atomic_read(&sent[SMB2_READ_HE]),
1047 atomic_read(&failed[SMB2_READ_HE]));
1995d28f 1048 seq_printf(m, "\nWrites: %d total %d failed",
d60622eb
PS		 1049 atomic_read(&sent[SMB2_WRITE_HE]),
1050 atomic_read(&failed[SMB2_WRITE_HE]));
1995d28f 1051 seq_printf(m, "\nLocks: %d total %d failed",
d60622eb
PS		 1052 atomic_read(&sent[SMB2_LOCK_HE]),
1053 atomic_read(&failed[SMB2_LOCK_HE]));
1995d28f 1054 seq_printf(m, "\nIOCTLs: %d total %d failed",
d60622eb
PS		 1055 atomic_read(&sent[SMB2_IOCTL_HE]),
1056 atomic_read(&failed[SMB2_IOCTL_HE]));
1995d28f 1057 seq_printf(m, "\nQueryDirectories: %d total %d failed",
d60622eb
PS		 1058 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
1059 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
1995d28f 1060 seq_printf(m, "\nChangeNotifies: %d total %d failed",
d60622eb
PS		 1061 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
1062 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
1995d28f 1063 seq_printf(m, "\nQueryInfos: %d total %d failed",
d60622eb
PS		 1064 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
1065 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
1995d28f 1066 seq_printf(m, "\nSetInfos: %d total %d failed",
d60622eb
PS		 1067 atomic_read(&sent[SMB2_SET_INFO_HE]),
1068 atomic_read(&failed[SMB2_SET_INFO_HE]));
1069 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
1070 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
1071 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
d60622eb
PS		 1072}
1073
f0df737e
PS		 1074static void
1075smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
1076{
2b0143b5 1077 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
53ef1016
PS		 1078 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
1079
f0df737e
PS		 1080 cfile->fid.persistent_fid = fid->persistent_fid;
1081 cfile->fid.volatile_fid = fid->volatile_fid;
dfe33f9a
SF		 1082#ifdef CONFIG_CIFS_DEBUG2
1083 cfile->fid.mid = fid->mid;
1084#endif /* CIFS_DEBUG2 */
42873b0a
PS		 1085 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
1086 &fid->purge_cache);
18cceb6a 1087 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
94f87371 1088 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
f0df737e
PS		 1089}
1090
760ad0ca 1091static void
f0df737e
PS		 1092smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
1093 struct cifs_fid *fid)
1094{
760ad0ca 1095 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
f0df737e
PS		 1096}
1097
41c1358e
SF		 1098static int
1099SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
1100 u64 persistent_fid, u64 volatile_fid,
1101 struct copychunk_ioctl *pcchunk)
1102{
1103 int rc;
1104 unsigned int ret_data_len;
1105 struct resume_key_req *res_key;
1106
1107 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
1108 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
1109 NULL, 0 /* no input */,
1110 (char **)&res_key, &ret_data_len);
1111
1112 if (rc) {
1113 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
1114 goto req_res_key_exit;
1115 }
1116 if (ret_data_len < sizeof(struct resume_key_req)) {
1117 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
1118 rc = -EINVAL;
1119 goto req_res_key_exit;
1120 }
1121 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
1122
1123req_res_key_exit:
1124 kfree(res_key);
1125 return rc;
1126}
1127
f5b05d62
RS		 1128static int
1129smb2_ioctl_query_info(const unsigned int xid,
8d8b26e5
RS		 1130 struct cifs_tcon *tcon,
1131 __le16 *path, int is_dir,
f5b05d62
RS		 1132 unsigned long p)
1133{
f5b05d62
RS		 1134 struct cifs_ses *ses = tcon->ses;
1135 char __user *arg = (char __user *)p;
1136 struct smb_query_info qi;
1137 struct smb_query_info __user *pqi;
1138 int rc = 0;
1139 int flags = 0;
f5b05d62 1140 struct smb2_query_info_rsp *rsp = NULL;
8d8b26e5
RS		 1141 void *buffer = NULL;
1142 struct smb_rqst rqst[3];
1143 int resp_buftype[3];
1144 struct kvec rsp_iov[3];
1145 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
1146 struct cifs_open_parms oparms;
1147 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1148 struct cifs_fid fid;
1149 struct kvec qi_iov[1];
1150 struct kvec close_iov[1];
1151
1152 memset(rqst, 0, sizeof(rqst));
1153 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1154 memset(rsp_iov, 0, sizeof(rsp_iov));
f5b05d62
RS		 1155
1156 if (copy_from_user(&qi, arg, sizeof(struct smb_query_info)))
1157 return -EFAULT;
1158
1159 if (qi.output_buffer_length > 1024)
1160 return -EINVAL;
1161
1162 if (!ses || !(ses->server))
1163 return -EIO;
1164
1165 if (smb3_encryption_required(tcon))
1166 flags |= CIFS_TRANSFORM_REQ;
1167
1168 buffer = kmalloc(qi.output_buffer_length, GFP_KERNEL);
1169 if (buffer == NULL)
1170 return -ENOMEM;
1171
1172 if (copy_from_user(buffer, arg + sizeof(struct smb_query_info),
1173 qi.output_buffer_length)) {
8d8b26e5
RS		 1174 rc = -EFAULT;
1175 goto iqinf_exit;
f5b05d62
RS		 1176 }
1177
8d8b26e5
RS		 1178 /* Open */
1179 memset(&open_iov, 0, sizeof(open_iov));
1180 rqst[0].rq_iov = open_iov;
1181 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1182
1183 memset(&oparms, 0, sizeof(oparms));
1184 oparms.tcon = tcon;
1185 oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
1186 oparms.disposition = FILE_OPEN;
1187 if (is_dir)
1188 oparms.create_options = CREATE_NOT_FILE;
1189 else
1190 oparms.create_options = CREATE_NOT_DIR;
1191 oparms.fid = &fid;
1192 oparms.reconnect = false;
1193
1194 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, path);
1195 if (rc)
1196 goto iqinf_exit;
1197 smb2_set_next_command(ses->server, &rqst[0]);
1198
1199 /* Query */
1200 memset(&qi_iov, 0, sizeof(qi_iov));
1201 rqst[1].rq_iov = qi_iov;
1202 rqst[1].rq_nvec = 1;
f5b05d62 1203
8d8b26e5 1204 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
f5b05d62
RS		 1205 qi.file_info_class, qi.info_type,
1206 qi.additional_information,
1207 qi.input_buffer_length,
1208 qi.output_buffer_length, buffer);
f5b05d62
RS		 1209 if (rc)
1210 goto iqinf_exit;
8d8b26e5
RS		 1211 smb2_set_next_command(ses->server, &rqst[1]);
1212 smb2_set_related(&rqst[1]);
1213
1214 /* Close */
1215 memset(&close_iov, 0, sizeof(close_iov));
1216 rqst[2].rq_iov = close_iov;
1217 rqst[2].rq_nvec = 1;
f5b05d62 1218
8d8b26e5 1219 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
f5b05d62
RS		 1220 if (rc)
1221 goto iqinf_exit;
8d8b26e5 1222 smb2_set_related(&rqst[2]);
f5b05d62 1223
8d8b26e5
RS		 1224 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1225 resp_buftype, rsp_iov);
1226 if (rc)
1227 goto iqinf_exit;
f5b05d62 1228 pqi = (struct smb_query_info __user *)arg;
8d8b26e5 1229 rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
f5b05d62
RS		 1230 if (le32_to_cpu(rsp->OutputBufferLength) < qi.input_buffer_length)
1231 qi.input_buffer_length = le32_to_cpu(rsp->OutputBufferLength);
1232 if (copy_to_user(&pqi->input_buffer_length, &qi.input_buffer_length,
1233 sizeof(qi.input_buffer_length))) {
1234 rc = -EFAULT;
1235 goto iqinf_exit;
1236 }
1237 if (copy_to_user(pqi + 1, rsp->Buffer, qi.input_buffer_length)) {
1238 rc = -EFAULT;
1239 goto iqinf_exit;
1240 }
1241
1242 iqinf_exit:
8d8b26e5
RS		 1243 kfree(buffer);
1244 SMB2_open_free(&rqst[0]);
1245 SMB2_query_info_free(&rqst[1]);
1246 SMB2_close_free(&rqst[2]);
1247 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1248 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1249 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
f5b05d62
RS		 1250 return rc;
1251}
1252
620d8745 1253static ssize_t
312bbc59 1254smb2_copychunk_range(const unsigned int xid,
41c1358e
SF		 1255 struct cifsFileInfo *srcfile,
1256 struct cifsFileInfo *trgtfile, u64 src_off,
1257 u64 len, u64 dest_off)
1258{
1259 int rc;
1260 unsigned int ret_data_len;
1261 struct copychunk_ioctl *pcchunk;
9bf0c9cd
SF		 1262 struct copychunk_ioctl_rsp *retbuf = NULL;
1263 struct cifs_tcon *tcon;
1264 int chunks_copied = 0;
1265 bool chunk_sizes_updated = false;
620d8745 1266 ssize_t bytes_written, total_bytes_written = 0;
41c1358e
SF		 1267
1268 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
1269
1270 if (pcchunk == NULL)
1271 return -ENOMEM;
1272
312bbc59 1273 cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
41c1358e
SF		 1274 /* Request a key from the server to identify the source of the copy */
1275 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
1276 srcfile->fid.persistent_fid,
1277 srcfile->fid.volatile_fid, pcchunk);
1278
1279 /* Note: request_res_key sets res_key null only if rc !=0 */
1280 if (rc)
9bf0c9cd 1281 goto cchunk_out;
41c1358e
SF		 1282
1283 /* For now array only one chunk long, will make more flexible later */
bc09d141 1284 pcchunk->ChunkCount = cpu_to_le32(1);
41c1358e 1285 pcchunk->Reserved = 0;
41c1358e
SF		 1286 pcchunk->Reserved2 = 0;
1287
9bf0c9cd 1288 tcon = tlink_tcon(trgtfile->tlink);
41c1358e 1289
9bf0c9cd
SF		 1290 while (len > 0) {
1291 pcchunk->SourceOffset = cpu_to_le64(src_off);
1292 pcchunk->TargetOffset = cpu_to_le64(dest_off);
1293 pcchunk->Length =
1294 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
41c1358e 1295
9bf0c9cd
SF		 1296 /* Request server copy to target from src identified by key */
1297 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1298 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
63a83b86 1299 true /* is_fsctl */, (char *)pcchunk,
9bf0c9cd
SF		 1300 sizeof(struct copychunk_ioctl), (char **)&retbuf,
1301 &ret_data_len);
1302 if (rc == 0) {
1303 if (ret_data_len !=
1304 sizeof(struct copychunk_ioctl_rsp)) {
1305 cifs_dbg(VFS, "invalid cchunk response size\n");
1306 rc = -EIO;
1307 goto cchunk_out;
1308 }
1309 if (retbuf->TotalBytesWritten == 0) {
1310 cifs_dbg(FYI, "no bytes copied\n");
1311 rc = -EIO;
1312 goto cchunk_out;
1313 }
1314 /*
1315 * Check if server claimed to write more than we asked
1316 */
1317 if (le32_to_cpu(retbuf->TotalBytesWritten) >
1318 le32_to_cpu(pcchunk->Length)) {
1319 cifs_dbg(VFS, "invalid copy chunk response\n");
1320 rc = -EIO;
1321 goto cchunk_out;
1322 }
1323 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
1324 cifs_dbg(VFS, "invalid num chunks written\n");
1325 rc = -EIO;
1326 goto cchunk_out;
1327 }
1328 chunks_copied++;
1329
620d8745
SP		 1330 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
1331 src_off += bytes_written;
1332 dest_off += bytes_written;
1333 len -= bytes_written;
1334 total_bytes_written += bytes_written;
9bf0c9cd 1335
620d8745 1336 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
9bf0c9cd
SF		 1337 le32_to_cpu(retbuf->ChunksWritten),
1338 le32_to_cpu(retbuf->ChunkBytesWritten),
620d8745 1339 bytes_written);
9bf0c9cd
SF		 1340 } else if (rc == -EINVAL) {
1341 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
1342 goto cchunk_out;
1343
1344 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1345 le32_to_cpu(retbuf->ChunksWritten),
1346 le32_to_cpu(retbuf->ChunkBytesWritten),
1347 le32_to_cpu(retbuf->TotalBytesWritten));
1348
1349 /*
1350 * Check if this is the first request using these sizes,
1351 * (ie check if copy succeed once with original sizes
1352 * and check if the server gave us different sizes after
1353 * we already updated max sizes on previous request).
1354 * if not then why is the server returning an error now
1355 */
1356 if ((chunks_copied != 0) || chunk_sizes_updated)
1357 goto cchunk_out;
1358
1359 /* Check that server is not asking us to grow size */
1360 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
1361 tcon->max_bytes_chunk)
1362 tcon->max_bytes_chunk =
1363 le32_to_cpu(retbuf->ChunkBytesWritten);
1364 else
1365 goto cchunk_out; /* server gave us bogus size */
1366
1367 /* No need to change MaxChunks since already set to 1 */
1368 chunk_sizes_updated = true;
2477bc58
SP		 1369 } else
1370 goto cchunk_out;
9bf0c9cd 1371 }
41c1358e 1372
9bf0c9cd 1373cchunk_out:
41c1358e 1374 kfree(pcchunk);
24df1483 1375 kfree(retbuf);
620d8745
SP		 1376 if (rc)
1377 return rc;
1378 else
1379 return total_bytes_written;
41c1358e
SF		 1380}
1381
7a5cfb19
PS		 1382static int
1383smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1384 struct cifs_fid *fid)
1385{
1386 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1387}
1388
09a4707e
PS		 1389static unsigned int
1390smb2_read_data_offset(char *buf)
1391{
1392 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1393 return rsp->DataOffset;
1394}
1395
1396static unsigned int
74dcf418 1397smb2_read_data_length(char *buf, bool in_remaining)
09a4707e
PS		 1398{
1399 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
74dcf418
LL		 1400
1401 if (in_remaining)
1402 return le32_to_cpu(rsp->DataRemaining);
1403
09a4707e
PS		 1404 return le32_to_cpu(rsp->DataLength);
1405}
1406
d8e05039
PS		 1407
1408static int
db8b631d 1409smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
d8e05039
PS		 1410 struct cifs_io_parms *parms, unsigned int *bytes_read,
1411 char **buf, int *buf_type)
1412{
db8b631d
SF		 1413 parms->persistent_fid = pfid->persistent_fid;
1414 parms->volatile_fid = pfid->volatile_fid;
d8e05039
PS		 1415 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1416}
1417
009d3443 1418static int
db8b631d 1419smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
009d3443
PS		 1420 struct cifs_io_parms *parms, unsigned int *written,
1421 struct kvec *iov, unsigned long nr_segs)
1422{
1423
db8b631d
SF		 1424 parms->persistent_fid = pfid->persistent_fid;
1425 parms->volatile_fid = pfid->volatile_fid;
009d3443
PS		 1426 return SMB2_write(xid, parms, written, iov, nr_segs);
1427}
1428
d43cc793
SF		 1429/* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1430static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1431 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1432{
1433 struct cifsInodeInfo *cifsi;
1434 int rc;
1435
1436 cifsi = CIFS_I(inode);
1437
1438 /* if file already sparse don't bother setting sparse again */
1439 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1440 return true; /* already sparse */
1441
1442 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1443 return true; /* already not sparse */
1444
1445 /*
1446 * Can't check for sparse support on share the usual way via the
1447 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1448 * since Samba server doesn't set the flag on the share, yet
1449 * supports the set sparse FSCTL and returns sparse correctly
1450 * in the file attributes. If we fail setting sparse though we
1451 * mark that server does not support sparse files for this share
1452 * to avoid repeatedly sending the unsupported fsctl to server
1453 * if the file is repeatedly extended.
1454 */
1455 if (tcon->broken_sparse_sup)
1456 return false;
1457
1458 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1459 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
63a83b86 1460 true /* is_fctl */,
51146625 1461 &setsparse, 1, NULL, NULL);
d43cc793
SF		 1462 if (rc) {
1463 tcon->broken_sparse_sup = true;
1464 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1465 return false;
1466 }
1467
1468 if (setsparse)
1469 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1470 else
1471 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1472
1473 return true;
1474}
1475
c839ff24
PS		 1476static int
1477smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1478 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1479{
1480 __le64 eof = cpu_to_le64(size);
3d1a3745
SF		 1481 struct inode *inode;
1482
1483 /*
1484 * If extending file more than one page make sparse. Many Linux fs
1485 * make files sparse by default when extending via ftruncate
1486 */
2b0143b5 1487 inode = d_inode(cfile->dentry);
3d1a3745
SF		 1488
1489 if (!set_alloc && (size > inode->i_size + 8192)) {
3d1a3745 1490 __u8 set_sparse = 1;
d43cc793
SF		 1491
1492 /* whether set sparse succeeds or not, extend the file */
1493 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
3d1a3745
SF		 1494 }
1495
c839ff24 1496 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3764cbd1 1497 cfile->fid.volatile_fid, cfile->pid, &eof);
c839ff24
PS		 1498}
1499
02b16665
SF		 1500static int
1501smb2_duplicate_extents(const unsigned int xid,
1502 struct cifsFileInfo *srcfile,
1503 struct cifsFileInfo *trgtfile, u64 src_off,
1504 u64 len, u64 dest_off)
1505{
1506 int rc;
1507 unsigned int ret_data_len;
02b16665
SF		 1508 struct duplicate_extents_to_file dup_ext_buf;
1509 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1510
1511 /* server fileays advertise duplicate extent support with this flag */
1512 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1513 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1514 return -EOPNOTSUPP;
1515
1516 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1517 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1518 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1519 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1520 dup_ext_buf.ByteCount = cpu_to_le64(len);
1521 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
1522 src_off, dest_off, len);
1523
1524 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1525 if (rc)
1526 goto duplicate_extents_out;
1527
1528 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1529 trgtfile->fid.volatile_fid,
1530 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
63a83b86 1531 true /* is_fsctl */,
51146625 1532 (char *)&dup_ext_buf,
02b16665 1533 sizeof(struct duplicate_extents_to_file),
24df1483 1534 NULL,
02b16665
SF		 1535 &ret_data_len);
1536
1537 if (ret_data_len > 0)
1538 cifs_dbg(FYI, "non-zero response length in duplicate extents");
1539
1540duplicate_extents_out:
1541 return rc;
1542}
02b16665 1543
64a5cfa6
SF		 1544static int
1545smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
1546 struct cifsFileInfo *cfile)
1547{
1548 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
1549 cfile->fid.volatile_fid);
1550}
1551
b3152e2c
SF		 1552static int
1553smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
1554 struct cifsFileInfo *cfile)
1555{
1556 struct fsctl_set_integrity_information_req integr_info;
b3152e2c
SF		 1557 unsigned int ret_data_len;
1558
1559 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
1560 integr_info.Flags = 0;
1561 integr_info.Reserved = 0;
1562
1563 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1564 cfile->fid.volatile_fid,
1565 FSCTL_SET_INTEGRITY_INFORMATION,
63a83b86 1566 true /* is_fsctl */,
51146625 1567 (char *)&integr_info,
b3152e2c 1568 sizeof(struct fsctl_set_integrity_information_req),
24df1483 1569 NULL,
b3152e2c
SF		 1570 &ret_data_len);
1571
1572}
1573
e02789a5
SF		 1574/* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
1575#define GMT_TOKEN_SIZE 50
1576
1577/*
1578 * Input buffer contains (empty) struct smb_snapshot array with size filled in
1579 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
1580 */
834170c8
SF		 1581static int
1582smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
1583 struct cifsFileInfo *cfile, void __user *ioc_buf)
1584{
1585 char *retbuf = NULL;
1586 unsigned int ret_data_len = 0;
1587 int rc;
1588 struct smb_snapshot_array snapshot_in;
1589
1590 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1591 cfile->fid.volatile_fid,
1592 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
63a83b86 1593 true /* is_fsctl */,
51146625 1594 NULL, 0 /* no input data */,
834170c8
SF		 1595 (char **)&retbuf,
1596 &ret_data_len);
1597 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
1598 rc, ret_data_len);
1599 if (rc)
1600 return rc;
1601
1602 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
1603 /* Fixup buffer */
1604 if (copy_from_user(&snapshot_in, ioc_buf,
1605 sizeof(struct smb_snapshot_array))) {
1606 rc = -EFAULT;
1607 kfree(retbuf);
1608 return rc;
1609 }
834170c8 1610
e02789a5
SF		 1611 /*
1612 * Check for min size, ie not large enough to fit even one GMT
1613 * token (snapshot). On the first ioctl some users may pass in
1614 * smaller size (or zero) to simply get the size of the array
1615 * so the user space caller can allocate sufficient memory
1616 * and retry the ioctl again with larger array size sufficient
1617 * to hold all of the snapshot GMT tokens on the second try.
1618 */
1619 if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
1620 ret_data_len = sizeof(struct smb_snapshot_array);
1621
1622 /*
1623 * We return struct SRV_SNAPSHOT_ARRAY, followed by
1624 * the snapshot array (of 50 byte GMT tokens) each
1625 * representing an available previous version of the data
1626 */
1627 if (ret_data_len > (snapshot_in.snapshot_array_size +
1628 sizeof(struct smb_snapshot_array)))
1629 ret_data_len = snapshot_in.snapshot_array_size +
1630 sizeof(struct smb_snapshot_array);
834170c8
SF		 1631
1632 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
1633 rc = -EFAULT;
1634 }
1635
1636 kfree(retbuf);
1637 return rc;
1638}
1639
d324f08d
PS		 1640static int
1641smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
1642 const char *path, struct cifs_sb_info *cifs_sb,
1643 struct cifs_fid *fid, __u16 search_flags,
1644 struct cifs_search_info *srch_inf)
1645{
1646 __le16 *utf16_path;
1647 int rc;
2e44b288 1648 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047 1649 struct cifs_open_parms oparms;
d324f08d
PS		 1650
1651 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1652 if (!utf16_path)
1653 return -ENOMEM;
1654
064f6047
PS		 1655 oparms.tcon = tcon;
1656 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
1657 oparms.disposition = FILE_OPEN;
5e19697b
SF		 1658 if (backup_cred(cifs_sb))
1659 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1660 else
1661 oparms.create_options = 0;
064f6047 1662 oparms.fid = fid;
9cbc0b73 1663 oparms.reconnect = false;
064f6047 1664
9d874c36 1665 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
d324f08d
PS		 1666 kfree(utf16_path);
1667 if (rc) {
dcd87838 1668 cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
d324f08d
PS		 1669 return rc;
1670 }
1671
1672 srch_inf->entries_in_buffer = 0;
0595751f 1673 srch_inf->index_of_last_entry = 2;
d324f08d 1674
064f6047
PS		 1675 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
1676 fid->volatile_fid, 0, srch_inf);
d324f08d 1677 if (rc) {
dcd87838 1678 cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
064f6047 1679 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
d324f08d
PS		 1680 }
1681 return rc;
1682}
1683
1684static int
1685smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
1686 struct cifs_fid *fid, __u16 search_flags,
1687 struct cifs_search_info *srch_inf)
1688{
1689 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
1690 fid->volatile_fid, 0, srch_inf);
1691}
1692
1693static int
1694smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1695 struct cifs_fid *fid)
1696{
1697 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1698}
1699
2e44b288
PS		 1700/*
1701* If we negotiate SMB2 protocol and get STATUS_PENDING - update
1702* the number of credits and return true. Otherwise - return false.
1703*/
1704static bool
1705smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
1706{
49f466bd 1707 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2e44b288 1708
31473fc4 1709 if (shdr->Status != STATUS_PENDING)
2e44b288
PS		 1710 return false;
1711
1712 if (!length) {
1713 spin_lock(&server->req_lock);
31473fc4 1714 server->credits += le16_to_cpu(shdr->CreditRequest);
2e44b288
PS		 1715 spin_unlock(&server->req_lock);
1716 wake_up(&server->request_q);
1717 }
1718
1719 return true;
1720}
1721
511c54a2
PS		 1722static bool
1723smb2_is_session_expired(char *buf)
1724{
49f466bd 1725 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
511c54a2 1726
d81243c6
MS		 1727 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
1728 shdr->Status != STATUS_USER_SESSION_DELETED)
511c54a2
PS		 1729 return false;
1730
e68a932b
SF		 1731 trace_smb3_ses_expired(shdr->TreeId, shdr->SessionId,
1732 le16_to_cpu(shdr->Command),
1733 le64_to_cpu(shdr->MessageId));
d81243c6 1734 cifs_dbg(FYI, "Session expired or deleted\n");
e68a932b 1735
511c54a2
PS		 1736 return true;
1737}
1738
983c88a4
PS		 1739static int
1740smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1741 struct cifsInodeInfo *cinode)
1742{
0822f514
PS		 1743 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1744 return SMB2_lease_break(0, tcon, cinode->lease_key,
1745 smb2_get_lease_state(cinode));
1746
983c88a4
PS		 1747 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1748 fid->volatile_fid,
18cceb6a 1749 CIFS_CACHE_READ(cinode) ? 1 : 0);
983c88a4
PS		 1750}
1751
c5a5f38f 1752void
730928c8
RS		 1753smb2_set_related(struct smb_rqst *rqst)
1754{
1755 struct smb2_sync_hdr *shdr;
1756
1757 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
1758 shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
1759}
1760
1761char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
1762
c5a5f38f 1763void
730928c8
RS		 1764smb2_set_next_command(struct TCP_Server_Info *server, struct smb_rqst *rqst)
1765{
1766 struct smb2_sync_hdr *shdr;
1767 unsigned long len = smb_rqst_len(server, rqst);
1768
1769 /* SMB headers in a compound are 8 byte aligned. */
1770 if (len & 7) {
1771 rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
1772 rqst->rq_iov[rqst->rq_nvec].iov_len = 8 - (len & 7);
1773 rqst->rq_nvec++;
1774 len = smb_rqst_len(server, rqst);
1775 }
1776
1777 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
1778 shdr->NextCommand = cpu_to_le32(len);
1779}
1780
6fc05c25
PS		 1781static int
1782smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1783 struct kstatfs *buf)
1784{
730928c8
RS		 1785 struct smb2_query_info_rsp *rsp;
1786 struct smb2_fs_full_size_info *info = NULL;
1787 struct smb_rqst rqst[3];
1788 int resp_buftype[3];
1789 struct kvec rsp_iov[3];
4d8dfafc 1790 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
730928c8
RS		 1791 struct kvec qi_iov[1];
1792 struct kvec close_iov[1];
1793 struct cifs_ses *ses = tcon->ses;
1794 struct TCP_Server_Info *server = ses->server;
6fc05c25
PS		 1795 __le16 srch_path = 0; /* Null - open root of share */
1796 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 1797 struct cifs_open_parms oparms;
1798 struct cifs_fid fid;
730928c8
RS		 1799 int flags = 0;
1800 int rc;
1801
1802 if (smb3_encryption_required(tcon))
1803 flags |= CIFS_TRANSFORM_REQ;
1804
1805 memset(rqst, 0, sizeof(rqst));
c5a5f38f 1806 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
730928c8
RS		 1807 memset(rsp_iov, 0, sizeof(rsp_iov));
1808
1809 memset(&open_iov, 0, sizeof(open_iov));
1810 rqst[0].rq_iov = open_iov;
4d8dfafc 1811 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
064f6047
PS		 1812
1813 oparms.tcon = tcon;
1814 oparms.desired_access = FILE_READ_ATTRIBUTES;
1815 oparms.disposition = FILE_OPEN;
1816 oparms.create_options = 0;
1817 oparms.fid = &fid;
9cbc0b73 1818 oparms.reconnect = false;
6fc05c25 1819
730928c8 1820 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &srch_path);
6fc05c25 1821 if (rc)
730928c8
RS		 1822 goto qfs_exit;
1823 smb2_set_next_command(server, &rqst[0]);
1824
1825 memset(&qi_iov, 0, sizeof(qi_iov));
1826 rqst[1].rq_iov = qi_iov;
1827 rqst[1].rq_nvec = 1;
1828
1829 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
1830 FS_FULL_SIZE_INFORMATION,
1831 SMB2_O_INFO_FILESYSTEM, 0,
f5b05d62
RS		 1832 sizeof(struct smb2_fs_full_size_info), 0,
1833 NULL);
730928c8
RS		 1834 if (rc)
1835 goto qfs_exit;
1836 smb2_set_next_command(server, &rqst[1]);
1837 smb2_set_related(&rqst[1]);
1838
1839 memset(&close_iov, 0, sizeof(close_iov));
1840 rqst[2].rq_iov = close_iov;
1841 rqst[2].rq_nvec = 1;
1842
1843 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
1844 if (rc)
1845 goto qfs_exit;
1846 smb2_set_related(&rqst[2]);
1847
1848 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1849 resp_buftype, rsp_iov);
1850 if (rc)
1851 goto qfs_exit;
1852
1853 rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
6fc05c25 1854 buf->f_type = SMB2_MAGIC_NUMBER;
730928c8
RS		 1855 info = (struct smb2_fs_full_size_info *)(
1856 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
1857 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
1858 le32_to_cpu(rsp->OutputBufferLength),
1859 &rsp_iov[1],
1860 sizeof(struct smb2_fs_full_size_info));
1861 if (!rc)
1862 smb2_copy_fs_info_to_kstatfs(info, buf);
1863
1864qfs_exit:
1865 SMB2_open_free(&rqst[0]);
1866 SMB2_query_info_free(&rqst[1]);
1867 SMB2_close_free(&rqst[2]);
1868 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1869 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1870 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
6fc05c25
PS		 1871 return rc;
1872}
1873
2d304217
SF		 1874static int
1875smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1876 struct kstatfs *buf)
1877{
1878 int rc;
1879 __le16 srch_path = 0; /* Null - open root of share */
1880 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1881 struct cifs_open_parms oparms;
1882 struct cifs_fid fid;
1883
1884 if (!tcon->posix_extensions)
1885 return smb2_queryfs(xid, tcon, buf);
1886
1887 oparms.tcon = tcon;
1888 oparms.desired_access = FILE_READ_ATTRIBUTES;
1889 oparms.disposition = FILE_OPEN;
1890 oparms.create_options = 0;
1891 oparms.fid = &fid;
1892 oparms.reconnect = false;
1893
1894 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
1895 if (rc)
1896 return rc;
1897
1898 rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
1899 fid.volatile_fid, buf);
1900 buf->f_type = SMB2_MAGIC_NUMBER;
1901 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1902 return rc;
1903}
2d304217 1904
027e8eec
PS		 1905static bool
1906smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
1907{
1908 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
1909 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
1910}
1911
f7ba7fe6
PS		 1912static int
1913smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
1914 __u64 length, __u32 type, int lock, int unlock, bool wait)
1915{
1916 if (unlock && !lock)
1917 type = SMB2_LOCKFLAG_UNLOCK;
1918 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
1919 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
1920 current->tgid, length, offset, type, wait);
1921}
1922
b8c32dbb
PS		 1923static void
1924smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
1925{
1926 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
1927}
1928
1929static void
1930smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
1931{
1932 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
1933}
1934
1935static void
1936smb2_new_lease_key(struct cifs_fid *fid)
1937{
fa70b87c 1938 generate_random_uuid(fid->lease_key);
b8c32dbb
PS		 1939}
1940
9d49640a
AA		 1941static int
1942smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
1943 const char *search_name,
1944 struct dfs_info3_param **target_nodes,
1945 unsigned int *num_of_nodes,
1946 const struct nls_table *nls_codepage, int remap)
1947{
1948 int rc;
1949 __le16 *utf16_path = NULL;
1950 int utf16_path_len = 0;
1951 struct cifs_tcon *tcon;
1952 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
1953 struct get_dfs_referral_rsp *dfs_rsp = NULL;
1954 u32 dfs_req_size = 0, dfs_rsp_size = 0;
1955
1956 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
1957
1958 /*
63a83b86 1959 * Try to use the IPC tcon, otherwise just use any
9d49640a 1960 */
63a83b86
AA		 1961 tcon = ses->tcon_ipc;
1962 if (tcon == NULL) {
1963 spin_lock(&cifs_tcp_ses_lock);
1964 tcon = list_first_entry_or_null(&ses->tcon_list,
1965 struct cifs_tcon,
1966 tcon_list);
1967 if (tcon)
1968 tcon->tc_count++;
1969 spin_unlock(&cifs_tcp_ses_lock);
1970 }
1971
1972 if (tcon == NULL) {
9d49640a
AA		 1973 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
1974 ses);
1975 rc = -ENOTCONN;
1976 goto out;
1977 }
1978
1979 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
1980 &utf16_path_len,
1981 nls_codepage, remap);
1982 if (!utf16_path) {
1983 rc = -ENOMEM;
1984 goto out;
1985 }
1986
1987 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
1988 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
1989 if (!dfs_req) {
1990 rc = -ENOMEM;
1991 goto out;
1992 }
1993
1994 /* Highest DFS referral version understood */
1995 dfs_req->MaxReferralLevel = DFS_VERSION;
1996
1997 /* Path to resolve in an UTF-16 null-terminated string */
1998 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
1999
2000 do {
9d49640a
AA		 2001 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
2002 FSCTL_DFS_GET_REFERRALS,
63a83b86 2003 true /* is_fsctl */,
9d49640a
AA		 2004 (char *)dfs_req, dfs_req_size,
2005 (char **)&dfs_rsp, &dfs_rsp_size);
9d49640a
AA		 2006 } while (rc == -EAGAIN);
2007
2008 if (rc) {
2564f2ff 2009 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
5702591f 2010 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
9d49640a
AA		 2011 goto out;
2012 }
2013
2014 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
2015 num_of_nodes, target_nodes,
2016 nls_codepage, remap, search_name,
2017 true /* is_unicode */);
2018 if (rc) {
2019 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
2020 goto out;
2021 }
2022
2023 out:
63a83b86
AA		 2024 if (tcon && !tcon->ipc) {
2025 /* ipc tcons are not refcounted */
9d49640a
AA		 2026 spin_lock(&cifs_tcp_ses_lock);
2027 tcon->tc_count--;
2028 spin_unlock(&cifs_tcp_ses_lock);
2029 }
2030 kfree(utf16_path);
2031 kfree(dfs_req);
2032 kfree(dfs_rsp);
2033 return rc;
2034}
7893242e
PS		 2035#define SMB2_SYMLINK_STRUCT_SIZE \
2036 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
2037
b42bf888
PS		 2038static int
2039smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
2040 const char *full_path, char **target_path,
2041 struct cifs_sb_info *cifs_sb)
2042{
2043 int rc;
2044 __le16 *utf16_path;
2045 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2046 struct cifs_open_parms oparms;
2047 struct cifs_fid fid;
91cb74f5 2048 struct kvec err_iov = {NULL, 0};
9d874c36
RS		 2049 struct smb2_err_rsp *err_buf = NULL;
2050 int resp_buftype;
b42bf888 2051 struct smb2_symlink_err_rsp *symlink;
7893242e
PS		 2052 unsigned int sub_len;
2053 unsigned int sub_offset;
2054 unsigned int print_len;
2055 unsigned int print_offset;
b42bf888
PS		 2056
2057 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
2058
2059 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
2060 if (!utf16_path)
2061 return -ENOMEM;
2062
2063 oparms.tcon = tcon;
2064 oparms.desired_access = FILE_READ_ATTRIBUTES;
2065 oparms.disposition = FILE_OPEN;
5e19697b
SF		 2066 if (backup_cred(cifs_sb))
2067 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2068 else
2069 oparms.create_options = 0;
b42bf888
PS		 2070 oparms.fid = &fid;
2071 oparms.reconnect = false;
2072
9d874c36
RS		 2073 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_iov,
2074 &resp_buftype);
0d568cd3 2075 if (!rc || !err_iov.iov_base) {
9d874c36 2076 rc = -ENOENT;
ff361fda 2077 goto free_path;
b42bf888 2078 }
7893242e 2079
91cb74f5 2080 err_buf = err_iov.iov_base;
7893242e 2081 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1fc6ad2f 2082 err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) {
9d874c36
RS		 2083 rc = -ENOENT;
2084 goto querty_exit;
7893242e
PS		 2085 }
2086
b42bf888
PS		 2087 /* open must fail on symlink - reset rc */
2088 rc = 0;
2089 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
2090 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
2091 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
7893242e
PS		 2092 print_len = le16_to_cpu(symlink->PrintNameLength);
2093 print_offset = le16_to_cpu(symlink->PrintNameOffset);
2094
1fc6ad2f 2095 if (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
9d874c36
RS		 2096 rc = -ENOENT;
2097 goto querty_exit;
7893242e
PS		 2098 }
2099
1fc6ad2f
RS		 2100 if (err_iov.iov_len <
2101 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
9d874c36
RS		 2102 rc = -ENOENT;
2103 goto querty_exit;
7893242e
PS		 2104 }
2105
b42bf888
PS		 2106 *target_path = cifs_strndup_from_utf16(
2107 (char *)symlink->PathBuffer + sub_offset,
2108 sub_len, true, cifs_sb->local_nls);
2109 if (!(*target_path)) {
9d874c36
RS		 2110 rc = -ENOMEM;
2111 goto querty_exit;
b42bf888
PS		 2112 }
2113 convert_delimiter(*target_path, '/');
2114 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
9d874c36
RS		 2115
2116 querty_exit:
2117 free_rsp_buf(resp_buftype, err_buf);
ff361fda 2118 free_path:
b42bf888
PS		 2119 kfree(utf16_path);
2120 return rc;
2121}
2122
84908426 2123#ifdef CONFIG_CIFS_ACL
2f1afe25
SP		 2124static struct cifs_ntsd *
2125get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
2126 const struct cifs_fid *cifsfid, u32 *pacllen)
2127{
2128 struct cifs_ntsd *pntsd = NULL;
2129 unsigned int xid;
2130 int rc = -EOPNOTSUPP;
2131 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2132
2133 if (IS_ERR(tlink))
2134 return ERR_CAST(tlink);
2135
2136 xid = get_xid();
2137 cifs_dbg(FYI, "trying to get acl\n");
2138
2139 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
2140 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
2141 free_xid(xid);
2142
2143 cifs_put_tlink(tlink);
2144
2145 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
2146 if (rc)
2147 return ERR_PTR(rc);
2148 return pntsd;
2149
2150}
2151
2152static struct cifs_ntsd *
2153get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
2154 const char *path, u32 *pacllen)
2155{
2156 struct cifs_ntsd *pntsd = NULL;
2157 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2158 unsigned int xid;
2159 int rc;
2160 struct cifs_tcon *tcon;
2161 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2162 struct cifs_fid fid;
2163 struct cifs_open_parms oparms;
2164 __le16 *utf16_path;
2165
2166 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
2167 if (IS_ERR(tlink))
2168 return ERR_CAST(tlink);
2169
2170 tcon = tlink_tcon(tlink);
2171 xid = get_xid();
2172
2173 if (backup_cred(cifs_sb))
709340a0 2174 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2f1afe25
SP		 2175 else
2176 oparms.create_options = 0;
2177
2178 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
cfe89091
SF		 2179 if (!utf16_path) {
2180 rc = -ENOMEM;
2181 free_xid(xid);
2182 return ERR_PTR(rc);
2183 }
2f1afe25
SP		 2184
2185 oparms.tcon = tcon;
2186 oparms.desired_access = READ_CONTROL;
2187 oparms.disposition = FILE_OPEN;
2188 oparms.fid = &fid;
2189 oparms.reconnect = false;
2190
9d874c36 2191 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2f1afe25
SP		 2192 kfree(utf16_path);
2193 if (!rc) {
2194 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
2195 fid.volatile_fid, (void **)&pntsd, pacllen);
2196 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2197 }
2198
2199 cifs_put_tlink(tlink);
2200 free_xid(xid);
2201
2202 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
2203 if (rc)
2204 return ERR_PTR(rc);
2205 return pntsd;
2206}
2207
366ed846
SP		 2208#ifdef CONFIG_CIFS_ACL
2209static int
2210set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
2211 struct inode *inode, const char *path, int aclflag)
2212{
2213 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2214 unsigned int xid;
2215 int rc, access_flags = 0;
2216 struct cifs_tcon *tcon;
2217 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2218 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2219 struct cifs_fid fid;
2220 struct cifs_open_parms oparms;
2221 __le16 *utf16_path;
2222
2223 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
2224 if (IS_ERR(tlink))
2225 return PTR_ERR(tlink);
2226
2227 tcon = tlink_tcon(tlink);
2228 xid = get_xid();
2229
2230 if (backup_cred(cifs_sb))
2231 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2232 else
2233 oparms.create_options = 0;
2234
2235 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
2236 access_flags = WRITE_OWNER;
2237 else
2238 access_flags = WRITE_DAC;
2239
2240 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
cfe89091
SF		 2241 if (!utf16_path) {
2242 rc = -ENOMEM;
2243 free_xid(xid);
2244 return rc;
2245 }
366ed846
SP		 2246
2247 oparms.tcon = tcon;
2248 oparms.desired_access = access_flags;
2249 oparms.disposition = FILE_OPEN;
2250 oparms.path = path;
2251 oparms.fid = &fid;
2252 oparms.reconnect = false;
2253
9d874c36 2254 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
366ed846
SP		 2255 kfree(utf16_path);
2256 if (!rc) {
2257 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
2258 fid.volatile_fid, pnntsd, acllen, aclflag);
2259 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2260 }
2261
2262 cifs_put_tlink(tlink);
2263 free_xid(xid);
2264 return rc;
2265}
2266#endif /* CIFS_ACL */
2267
2f1afe25
SP		 2268/* Retrieve an ACL from the server */
2269static struct cifs_ntsd *
2270get_smb2_acl(struct cifs_sb_info *cifs_sb,
2271 struct inode *inode, const char *path,
2272 u32 *pacllen)
2273{
2274 struct cifs_ntsd *pntsd = NULL;
2275 struct cifsFileInfo *open_file = NULL;
2276
2277 if (inode)
2278 open_file = find_readable_file(CIFS_I(inode), true);
2279 if (!open_file)
2280 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
2281
2282 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
2283 cifsFileInfo_put(open_file);
2284 return pntsd;
2285}
84908426 2286#endif
2f1afe25 2287
30175628
SF		 2288static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
2289 loff_t offset, loff_t len, bool keep_size)
2290{
2291 struct inode *inode;
2292 struct cifsInodeInfo *cifsi;
2293 struct cifsFileInfo *cfile = file->private_data;
2294 struct file_zero_data_information fsctl_buf;
2295 long rc;
2296 unsigned int xid;
2297
2298 xid = get_xid();
2299
2b0143b5 2300 inode = d_inode(cfile->dentry);
30175628
SF		 2301 cifsi = CIFS_I(inode);
2302
2303 /* if file not oplocked can't be sure whether asking to extend size */
2304 if (!CIFS_CACHE_READ(cifsi))
cfe89091
SF		 2305 if (keep_size == false) {
2306 rc = -EOPNOTSUPP;
2307 free_xid(xid);
2308 return rc;
2309 }
30175628 2310
2bb93d24 2311 /*
30175628
SF		 2312 * Must check if file sparse since fallocate -z (zero range) assumes
2313 * non-sparse allocation
2314 */
cfe89091
SF		 2315 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
2316 rc = -EOPNOTSUPP;
2317 free_xid(xid);
2318 return rc;
2319 }
30175628
SF		 2320
2321 /*
2322 * need to make sure we are not asked to extend the file since the SMB3
2323 * fsctl does not change the file size. In the future we could change
2324 * this to zero the first part of the range then set the file size
2325 * which for a non sparse file would zero the newly extended range
2326 */
2327 if (keep_size == false)
cfe89091
SF		 2328 if (i_size_read(inode) < offset + len) {
2329 rc = -EOPNOTSUPP;
2330 free_xid(xid);
2331 return rc;
2332 }
30175628
SF		 2333
2334 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
2335
2336 fsctl_buf.FileOffset = cpu_to_le64(offset);
2337 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
2338
2339 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2340 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
63a83b86 2341 true /* is_fctl */, (char *)&fsctl_buf,
30175628
SF		 2342 sizeof(struct file_zero_data_information), NULL, NULL);
2343 free_xid(xid);
2344 return rc;
2345}
2346
31742c5a
SF		 2347static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
2348 loff_t offset, loff_t len)
2349{
2350 struct inode *inode;
2351 struct cifsInodeInfo *cifsi;
2352 struct cifsFileInfo *cfile = file->private_data;
2353 struct file_zero_data_information fsctl_buf;
2354 long rc;
2355 unsigned int xid;
2356 __u8 set_sparse = 1;
2357
2358 xid = get_xid();
2359
2b0143b5 2360 inode = d_inode(cfile->dentry);
31742c5a
SF		 2361 cifsi = CIFS_I(inode);
2362
2363 /* Need to make file sparse, if not already, before freeing range. */
2364 /* Consider adding equivalent for compressed since it could also work */
cfe89091
SF		 2365 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
2366 rc = -EOPNOTSUPP;
2367 free_xid(xid);
2368 return rc;
2369 }
31742c5a
SF		 2370
2371 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
2372
2373 fsctl_buf.FileOffset = cpu_to_le64(offset);
2374 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
2375
2376 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2377 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
63a83b86 2378 true /* is_fctl */, (char *)&fsctl_buf,
31742c5a
SF		 2379 sizeof(struct file_zero_data_information), NULL, NULL);
2380 free_xid(xid);
2381 return rc;
2382}
2383
9ccf3216
SF		 2384static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
2385 loff_t off, loff_t len, bool keep_size)
2386{
2387 struct inode *inode;
2388 struct cifsInodeInfo *cifsi;
2389 struct cifsFileInfo *cfile = file->private_data;
2390 long rc = -EOPNOTSUPP;
2391 unsigned int xid;
2392
2393 xid = get_xid();
2394
2b0143b5 2395 inode = d_inode(cfile->dentry);
9ccf3216
SF		 2396 cifsi = CIFS_I(inode);
2397
2398 /* if file not oplocked can't be sure whether asking to extend size */
2399 if (!CIFS_CACHE_READ(cifsi))
cfe89091
SF		 2400 if (keep_size == false) {
2401 free_xid(xid);
2402 return rc;
2403 }
9ccf3216
SF		 2404
2405 /*
2406 * Files are non-sparse by default so falloc may be a no-op
2407 * Must check if file sparse. If not sparse, and not extending
2408 * then no need to do anything since file already allocated
2409 */
2410 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
2411 if (keep_size == true)
cfe89091 2412 rc = 0;
9ccf3216
SF		 2413 /* check if extending file */
2414 else if (i_size_read(inode) >= off + len)
2415 /* not extending file and already not sparse */
cfe89091 2416 rc = 0;
9ccf3216
SF		 2417 /* BB: in future add else clause to extend file */
2418 else
cfe89091
SF		 2419 rc = -EOPNOTSUPP;
2420 free_xid(xid);
2421 return rc;
9ccf3216
SF		 2422 }
2423
2424 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
2425 /*
2426 * Check if falloc starts within first few pages of file
2427 * and ends within a few pages of the end of file to
2428 * ensure that most of file is being forced to be
2429 * fallocated now. If so then setting whole file sparse
2430 * ie potentially making a few extra pages at the beginning
2431 * or end of the file non-sparse via set_sparse is harmless.
2432 */
cfe89091
SF		 2433 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
2434 rc = -EOPNOTSUPP;
2435 free_xid(xid);
2436 return rc;
2437 }
9ccf3216
SF		 2438
2439 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
2440 }
2441 /* BB: else ... in future add code to extend file and set sparse */
2442
2443
2444 free_xid(xid);
2445 return rc;
2446}
2447
2448
31742c5a
SF		 2449static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
2450 loff_t off, loff_t len)
2451{
2452 /* KEEP_SIZE already checked for by do_fallocate */
2453 if (mode & FALLOC_FL_PUNCH_HOLE)
2454 return smb3_punch_hole(file, tcon, off, len);
30175628
SF		 2455 else if (mode & FALLOC_FL_ZERO_RANGE) {
2456 if (mode & FALLOC_FL_KEEP_SIZE)
2457 return smb3_zero_range(file, tcon, off, len, true);
2458 return smb3_zero_range(file, tcon, off, len, false);
9ccf3216
SF		 2459 } else if (mode == FALLOC_FL_KEEP_SIZE)
2460 return smb3_simple_falloc(file, tcon, off, len, true);
2461 else if (mode == 0)
2462 return smb3_simple_falloc(file, tcon, off, len, false);
31742c5a
SF		 2463
2464 return -EOPNOTSUPP;
2465}
2466
c11f1df5
SP		 2467static void
2468smb2_downgrade_oplock(struct TCP_Server_Info *server,
2469 struct cifsInodeInfo *cinode, bool set_level2)
2470{
2471 if (set_level2)
2472 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
2473 0, NULL);
2474 else
2475 server->ops->set_oplock_level(cinode, 0, 0, NULL);
2476}
2477
53ef1016 2478static void
42873b0a
PS		 2479smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2480 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 2481{
2482 oplock &= 0xFF;
2483 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2484 return;
2485 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
42873b0a 2486 cinode->oplock = CIFS_CACHE_RHW_FLG;
53ef1016
PS		 2487 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
2488 &cinode->vfs_inode);
2489 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
42873b0a 2490 cinode->oplock = CIFS_CACHE_RW_FLG;
53ef1016
PS		 2491 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
2492 &cinode->vfs_inode);
2493 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
2494 cinode->oplock = CIFS_CACHE_READ_FLG;
2495 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
2496 &cinode->vfs_inode);
2497 } else
2498 cinode->oplock = 0;
2499}
2500
2501static void
42873b0a
PS		 2502smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2503 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 2504{
2505 char message[5] = {0};
2506
2507 oplock &= 0xFF;
2508 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2509 return;
2510
2511 cinode->oplock = 0;
2512 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
2513 cinode->oplock |= CIFS_CACHE_READ_FLG;
2514 strcat(message, "R");
2515 }
2516 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
2517 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
2518 strcat(message, "H");
2519 }
2520 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
2521 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
2522 strcat(message, "W");
2523 }
2524 if (!cinode->oplock)
2525 strcat(message, "None");
2526 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
2527 &cinode->vfs_inode);
2528}
2529
42873b0a
PS		 2530static void
2531smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2532 unsigned int epoch, bool *purge_cache)
2533{
2534 unsigned int old_oplock = cinode->oplock;
2535
2536 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
2537
2538 if (purge_cache) {
2539 *purge_cache = false;
2540 if (old_oplock == CIFS_CACHE_READ_FLG) {
2541 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
2542 (epoch - cinode->epoch > 0))
2543 *purge_cache = true;
2544 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2545 (epoch - cinode->epoch > 1))
2546 *purge_cache = true;
2547 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2548 (epoch - cinode->epoch > 1))
2549 *purge_cache = true;
2550 else if (cinode->oplock == 0 &&
2551 (epoch - cinode->epoch > 0))
2552 *purge_cache = true;
2553 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
2554 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2555 (epoch - cinode->epoch > 0))
2556 *purge_cache = true;
2557 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2558 (epoch - cinode->epoch > 1))
2559 *purge_cache = true;
2560 }
2561 cinode->epoch = epoch;
2562 }
2563}
2564
53ef1016
PS		 2565static bool
2566smb2_is_read_op(__u32 oplock)
2567{
2568 return oplock == SMB2_OPLOCK_LEVEL_II;
2569}
2570
2571static bool
2572smb21_is_read_op(__u32 oplock)
2573{
2574 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
2575 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
2576}
2577
f047390a
PS		 2578static __le32
2579map_oplock_to_lease(u8 oplock)
2580{
2581 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
2582 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
2583 else if (oplock == SMB2_OPLOCK_LEVEL_II)
2584 return SMB2_LEASE_READ_CACHING;
2585 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
2586 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
2587 SMB2_LEASE_WRITE_CACHING;
2588 return 0;
2589}
2590
a41a28bd
PS		 2591static char *
2592smb2_create_lease_buf(u8 *lease_key, u8 oplock)
2593{
2594 struct create_lease *buf;
2595
2596 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
2597 if (!buf)
2598 return NULL;
2599
729c0c9d 2600 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
f047390a 2601 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
a41a28bd
PS		 2602
2603 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2604 (struct create_lease, lcontext));
2605 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
2606 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2607 (struct create_lease, Name));
2608 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 2609 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
a41a28bd
PS		 2610 buf->Name[0] = 'R';
2611 buf->Name[1] = 'q';
2612 buf->Name[2] = 'L';
2613 buf->Name[3] = 's';
2614 return (char *)buf;
2615}
2616
f047390a
PS		 2617static char *
2618smb3_create_lease_buf(u8 *lease_key, u8 oplock)
2619{
2620 struct create_lease_v2 *buf;
2621
2622 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
2623 if (!buf)
2624 return NULL;
2625
729c0c9d 2626 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
f047390a
PS		 2627 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2628
2629 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2630 (struct create_lease_v2, lcontext));
2631 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
2632 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2633 (struct create_lease_v2, Name));
2634 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 2635 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
f047390a
PS		 2636 buf->Name[0] = 'R';
2637 buf->Name[1] = 'q';
2638 buf->Name[2] = 'L';
2639 buf->Name[3] = 's';
2640 return (char *)buf;
2641}
2642
b5c7cde3 2643static __u8
96164ab2 2644smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
b5c7cde3
PS		 2645{
2646 struct create_lease *lc = (struct create_lease *)buf;
2647
42873b0a 2648 *epoch = 0; /* not used */
b5c7cde3
PS		 2649 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2650 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2651 return le32_to_cpu(lc->lcontext.LeaseState);
2652}
2653
f047390a 2654static __u8
96164ab2 2655smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
f047390a
PS		 2656{
2657 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
2658
42873b0a 2659 *epoch = le16_to_cpu(lc->lcontext.Epoch);
f047390a
PS		 2660 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2661 return SMB2_OPLOCK_LEVEL_NOCHANGE;
96164ab2 2662 if (lease_key)
729c0c9d 2663 memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
f047390a
PS		 2664 return le32_to_cpu(lc->lcontext.LeaseState);
2665}
2666
7f6c5008
PS		 2667static unsigned int
2668smb2_wp_retry_size(struct inode *inode)
2669{
2670 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
2671 SMB2_MAX_BUFFER_SIZE);
2672}
2673
52755808
PS		 2674static bool
2675smb2_dir_needs_close(struct cifsFileInfo *cfile)
2676{
2677 return !cfile->invalidHandle;
2678}
2679
026e93dc 2680static void
977b6170
RS		 2681fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
2682 struct smb_rqst *old_rq)
026e93dc
PS		 2683{
2684 struct smb2_sync_hdr *shdr =
c713c877 2685 (struct smb2_sync_hdr *)old_rq->rq_iov[0].iov_base;
026e93dc
PS		 2686
2687 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
2688 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
2689 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
2690 tr_hdr->Flags = cpu_to_le16(0x01);
2691 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2692 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
026e93dc
PS		 2693}
2694
262916bc
RS		 2695/* We can not use the normal sg_set_buf() as we will sometimes pass a
2696 * stack object as buf.
2697 */
2698static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
2699 unsigned int buflen)
2700{
2701 sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
2702}
2703
b2c96de7
RS		 2704/* Assumes the first rqst has a transform header as the first iov.
2705 * I.e.
2706 * rqst[0].rq_iov[0] is transform header
2707 * rqst[0].rq_iov[1+] data to be encrypted/decrypted
2708 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
977b6170 2709 */
026e93dc 2710static struct scatterlist *
b2c96de7 2711init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign)
026e93dc 2712{
b2c96de7 2713 unsigned int sg_len;
026e93dc
PS		 2714 struct scatterlist *sg;
2715 unsigned int i;
2716 unsigned int j;
b2c96de7
RS		 2717 unsigned int idx = 0;
2718 int skip;
2719
2720 sg_len = 1;
2721 for (i = 0; i < num_rqst; i++)
2722 sg_len += rqst[i].rq_nvec + rqst[i].rq_npages;
026e93dc
PS		 2723
2724 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
2725 if (!sg)
2726 return NULL;
2727
2728 sg_init_table(sg, sg_len);
b2c96de7
RS		 2729 for (i = 0; i < num_rqst; i++) {
2730 for (j = 0; j < rqst[i].rq_nvec; j++) {
2731 /*
2732 * The first rqst has a transform header where the
2733 * first 20 bytes are not part of the encrypted blob
2734 */
2735 skip = (i == 0) && (j == 0) ? 20 : 0;
2736 smb2_sg_set_buf(&sg[idx++],
2737 rqst[i].rq_iov[j].iov_base + skip,
2738 rqst[i].rq_iov[j].iov_len - skip);
2739 }
2740
2741 for (j = 0; j < rqst[i].rq_npages; j++) {
2742 unsigned int len, offset;
d5f07fb3 2743
b2c96de7
RS		 2744 rqst_page_get_length(&rqst[i], j, &len, &offset);
2745 sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset);
2746 }
026e93dc 2747 }
b2c96de7 2748 smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE);
026e93dc
PS		 2749 return sg;
2750}
2751
61cfac6f
PS		 2752static int
2753smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
2754{
2755 struct cifs_ses *ses;
2756 u8 *ses_enc_key;
2757
2758 spin_lock(&cifs_tcp_ses_lock);
2759 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
2760 if (ses->Suid != ses_id)
2761 continue;
2762 ses_enc_key = enc ? ses->smb3encryptionkey :
2763 ses->smb3decryptionkey;
2764 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
2765 spin_unlock(&cifs_tcp_ses_lock);
2766 return 0;
2767 }
2768 spin_unlock(&cifs_tcp_ses_lock);
2769
2770 return 1;
2771}
026e93dc 2772/*
c713c877
RS		 2773 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
2774 * iov[0] - transform header (associate data),
2775 * iov[1-N] - SMB2 header and pages - data to encrypt.
2776 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
026e93dc
PS		 2777 * untouched.
2778 */
2779static int
b2c96de7
RS		 2780crypt_message(struct TCP_Server_Info *server, int num_rqst,
2781 struct smb_rqst *rqst, int enc)
026e93dc
PS		 2782{
2783 struct smb2_transform_hdr *tr_hdr =
b2c96de7 2784 (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
1fc6ad2f 2785 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
026e93dc
PS		 2786 int rc = 0;
2787 struct scatterlist *sg;
2788 u8 sign[SMB2_SIGNATURE_SIZE] = {};
61cfac6f 2789 u8 key[SMB3_SIGN_KEY_SIZE];
026e93dc
PS		 2790 struct aead_request *req;
2791 char *iv;
2792 unsigned int iv_len;
a5186b85 2793 DECLARE_CRYPTO_WAIT(wait);
026e93dc
PS		 2794 struct crypto_aead *tfm;
2795 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2796
61cfac6f
PS		 2797 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
2798 if (rc) {
2799 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
2800 enc ? "en" : "de");
026e93dc
PS		 2801 return 0;
2802 }
2803
2804 rc = smb3_crypto_aead_allocate(server);
2805 if (rc) {
2806 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
2807 return rc;
2808 }
2809
2810 tfm = enc ? server->secmech.ccmaesencrypt :
2811 server->secmech.ccmaesdecrypt;
61cfac6f 2812 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
026e93dc
PS		 2813 if (rc) {
2814 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
2815 return rc;
2816 }
2817
2818 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
2819 if (rc) {
2820 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
2821 return rc;
2822 }
2823
2824 req = aead_request_alloc(tfm, GFP_KERNEL);
2825 if (!req) {
2826 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
2827 return -ENOMEM;
2828 }
2829
2830 if (!enc) {
2831 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
2832 crypt_len += SMB2_SIGNATURE_SIZE;
2833 }
2834
b2c96de7 2835 sg = init_sg(num_rqst, rqst, sign);
026e93dc 2836 if (!sg) {
517a6e43
CJ		 2837 cifs_dbg(VFS, "%s: Failed to init sg", __func__);
2838 rc = -ENOMEM;
026e93dc
PS		 2839 goto free_req;
2840 }
2841
2842 iv_len = crypto_aead_ivsize(tfm);
2843 iv = kzalloc(iv_len, GFP_KERNEL);
2844 if (!iv) {
2845 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
517a6e43 2846 rc = -ENOMEM;
026e93dc
PS		 2847 goto free_sg;
2848 }
2849 iv[0] = 3;
2850 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2851
2852 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
2853 aead_request_set_ad(req, assoc_data_len);
2854
2855 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
a5186b85 2856 crypto_req_done, &wait);
026e93dc 2857
a5186b85
GBY		 2858 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
2859 : crypto_aead_decrypt(req), &wait);
026e93dc
PS		 2860
2861 if (!rc && enc)
2862 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
2863
2864 kfree(iv);
2865free_sg:
2866 kfree(sg);
2867free_req:
2868 kfree(req);
2869 return rc;
2870}
2871
b2c96de7
RS		 2872void
2873smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
2874{
2875 int i, j;
2876
2877 for (i = 0; i < num_rqst; i++) {
2878 if (rqst[i].rq_pages) {
2879 for (j = rqst[i].rq_npages - 1; j >= 0; j--)
2880 put_page(rqst[i].rq_pages[j]);
2881 kfree(rqst[i].rq_pages);
2882 }
2883 }
2884}
2885
2886/*
2887 * This function will initialize new_rq and encrypt the content.
2888 * The first entry, new_rq[0], only contains a single iov which contains
2889 * a smb2_transform_hdr and is pre-allocated by the caller.
2890 * This function then populates new_rq[1+] with the content from olq_rq[0+].
2891 *
2892 * The end result is an array of smb_rqst structures where the first structure
2893 * only contains a single iov for the transform header which we then can pass
2894 * to crypt_message().
2895 *
2896 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
2897 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
2898 */
026e93dc 2899static int
b2c96de7
RS		 2900smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
2901 struct smb_rqst *new_rq, struct smb_rqst *old_rq)
026e93dc 2902{
026e93dc 2903 struct page **pages;
b2c96de7
RS		 2904 struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
2905 unsigned int npages;
2906 unsigned int orig_len = 0;
2907 int i, j;
026e93dc
PS		 2908 int rc = -ENOMEM;
2909
b2c96de7
RS		 2910 for (i = 1; i < num_rqst; i++) {
2911 npages = old_rq[i - 1].rq_npages;
2912 pages = kmalloc_array(npages, sizeof(struct page *),
2913 GFP_KERNEL);
2914 if (!pages)
2915 goto err_free;
2916
2917 new_rq[i].rq_pages = pages;
2918 new_rq[i].rq_npages = npages;
2919 new_rq[i].rq_offset = old_rq[i - 1].rq_offset;
2920 new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz;
2921 new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz;
2922 new_rq[i].rq_iov = old_rq[i - 1].rq_iov;
2923 new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec;
2924
2925 orig_len += smb_rqst_len(server, &old_rq[i - 1]);
2926
2927 for (j = 0; j < npages; j++) {
2928 pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2929 if (!pages[j])
2930 goto err_free;
2931 }
026e93dc 2932
b2c96de7
RS		 2933 /* copy pages form the old */
2934 for (j = 0; j < npages; j++) {
2935 char *dst, *src;
2936 unsigned int offset, len;
977b6170 2937
b2c96de7 2938 rqst_page_get_length(&new_rq[i], j, &len, &offset);
026e93dc 2939
b2c96de7
RS		 2940 dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset;
2941 src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset;
026e93dc 2942
b2c96de7
RS		 2943 memcpy(dst, src, len);
2944 kunmap(new_rq[i].rq_pages[j]);
2945 kunmap(old_rq[i - 1].rq_pages[j]);
2946 }
2947 }
35e2cc1b 2948
b2c96de7 2949 /* fill the 1st iov with a transform header */
977b6170 2950 fill_transform_hdr(tr_hdr, orig_len, old_rq);
d5f07fb3 2951
b2c96de7 2952 rc = crypt_message(server, num_rqst, new_rq, 1);
026e93dc
PS		 2953 cifs_dbg(FYI, "encrypt message returned %d", rc);
2954 if (rc)
b2c96de7 2955 goto err_free;
026e93dc
PS		 2956
2957 return rc;
2958
b2c96de7
RS		 2959err_free:
2960 smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
026e93dc
PS		 2961 return rc;
2962}
2963
4326ed2f
PS		 2964static int
2965smb3_is_transform_hdr(void *buf)
2966{
2967 struct smb2_transform_hdr *trhdr = buf;
2968
2969 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
2970}
2971
2972static int
2973decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
2974 unsigned int buf_data_size, struct page **pages,
2975 unsigned int npages, unsigned int page_data_size)
2976{
c713c877 2977 struct kvec iov[2];
4326ed2f 2978 struct smb_rqst rqst = {NULL};
4326ed2f
PS		 2979 int rc;
2980
c713c877
RS		 2981 iov[0].iov_base = buf;
2982 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
2983 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
2984 iov[1].iov_len = buf_data_size;
4326ed2f
PS		 2985
2986 rqst.rq_iov = iov;
c713c877 2987 rqst.rq_nvec = 2;
4326ed2f
PS		 2988 rqst.rq_pages = pages;
2989 rqst.rq_npages = npages;
2990 rqst.rq_pagesz = PAGE_SIZE;
2991 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
2992
b2c96de7 2993 rc = crypt_message(server, 1, &rqst, 0);
4326ed2f
PS		 2994 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
2995
2996 if (rc)
2997 return rc;
2998
c713c877 2999 memmove(buf, iov[1].iov_base, buf_data_size);
977b6170
RS		 3000
3001 server->total_read = buf_data_size + page_data_size;
4326ed2f
PS		 3002
3003 return rc;
3004}
3005
c42a6abe
PS		 3006static int
3007read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
3008 unsigned int npages, unsigned int len)
3009{
3010 int i;
3011 int length;
3012
3013 for (i = 0; i < npages; i++) {
3014 struct page *page = pages[i];
3015 size_t n;
3016
3017 n = len;
3018 if (len >= PAGE_SIZE) {
3019 /* enough data to fill the page */
3020 n = PAGE_SIZE;
3021 len -= n;
3022 } else {
3023 zero_user(page, len, PAGE_SIZE - len);
3024 len = 0;
3025 }
1dbe3466 3026 length = cifs_read_page_from_socket(server, page, 0, n);
c42a6abe
PS		 3027 if (length < 0)
3028 return length;
3029 server->total_read += length;
3030 }
3031
3032 return 0;
3033}
3034
3035static int
3036init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
3037 unsigned int cur_off, struct bio_vec **page_vec)
3038{
3039 struct bio_vec *bvec;
3040 int i;
3041
3042 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
3043 if (!bvec)
3044 return -ENOMEM;
3045
3046 for (i = 0; i < npages; i++) {
3047 bvec[i].bv_page = pages[i];
3048 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
3049 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
3050 data_size -= bvec[i].bv_len;
3051 }
3052
3053 if (data_size != 0) {
3054 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
3055 kfree(bvec);
3056 return -EIO;
3057 }
3058
3059 *page_vec = bvec;
3060 return 0;
3061}
3062
4326ed2f
PS		 3063static int
3064handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
3065 char *buf, unsigned int buf_len, struct page **pages,
3066 unsigned int npages, unsigned int page_data_size)
3067{
3068 unsigned int data_offset;
3069 unsigned int data_len;
c42a6abe
PS		 3070 unsigned int cur_off;
3071 unsigned int cur_page_idx;
3072 unsigned int pad_len;
4326ed2f 3073 struct cifs_readdata *rdata = mid->callback_data;
49f466bd 3074 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
4326ed2f
PS		 3075 struct bio_vec *bvec = NULL;
3076 struct iov_iter iter;
3077 struct kvec iov;
3078 int length;
74dcf418 3079 bool use_rdma_mr = false;
4326ed2f
PS		 3080
3081 if (shdr->Command != SMB2_READ) {
3082 cifs_dbg(VFS, "only big read responses are supported\n");
3083 return -ENOTSUPP;
3084 }
3085
511c54a2
PS		 3086 if (server->ops->is_session_expired &&
3087 server->ops->is_session_expired(buf)) {
3088 cifs_reconnect(server);
3089 wake_up(&server->response_q);
3090 return -1;
3091 }
3092
4326ed2f
PS		 3093 if (server->ops->is_status_pending &&
3094 server->ops->is_status_pending(buf, server, 0))
3095 return -1;
3096
3097 rdata->result = server->ops->map_error(buf, false);
3098 if (rdata->result != 0) {
3099 cifs_dbg(FYI, "%s: server returned error %d\n",
3100 __func__, rdata->result);
3101 dequeue_mid(mid, rdata->result);
3102 return 0;
3103 }
3104
1fc6ad2f 3105 data_offset = server->ops->read_data_offset(buf);
74dcf418
LL		 3106#ifdef CONFIG_CIFS_SMB_DIRECT
3107 use_rdma_mr = rdata->mr;
3108#endif
3109 data_len = server->ops->read_data_length(buf, use_rdma_mr);
4326ed2f
PS		 3110
3111 if (data_offset < server->vals->read_rsp_size) {
3112 /*
3113 * win2k8 sometimes sends an offset of 0 when the read
3114 * is beyond the EOF. Treat it as if the data starts just after
3115 * the header.
3116 */
3117 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
3118 __func__, data_offset);
3119 data_offset = server->vals->read_rsp_size;
3120 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
3121 /* data_offset is beyond the end of smallbuf */
3122 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
3123 __func__, data_offset);
3124 rdata->result = -EIO;
3125 dequeue_mid(mid, rdata->result);
3126 return 0;
3127 }
3128
c42a6abe
PS		 3129 pad_len = data_offset - server->vals->read_rsp_size;
3130
4326ed2f
PS		 3131 if (buf_len <= data_offset) {
3132 /* read response payload is in pages */
c42a6abe
PS		 3133 cur_page_idx = pad_len / PAGE_SIZE;
3134 cur_off = pad_len % PAGE_SIZE;
3135
3136 if (cur_page_idx != 0) {
3137 /* data offset is beyond the 1st page of response */
3138 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
3139 __func__, data_offset);
3140 rdata->result = -EIO;
3141 dequeue_mid(mid, rdata->result);
3142 return 0;
3143 }
3144
3145 if (data_len > page_data_size - pad_len) {
3146 /* data_len is corrupt -- discard frame */
3147 rdata->result = -EIO;
3148 dequeue_mid(mid, rdata->result);
3149 return 0;
3150 }
3151
3152 rdata->result = init_read_bvec(pages, npages, page_data_size,
3153 cur_off, &bvec);
3154 if (rdata->result != 0) {
3155 dequeue_mid(mid, rdata->result);
3156 return 0;
3157 }
3158
aa563d7b 3159 iov_iter_bvec(&iter, WRITE, bvec, npages, data_len);
4326ed2f
PS		 3160 } else if (buf_len >= data_offset + data_len) {
3161 /* read response payload is in buf */
3162 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
3163 iov.iov_base = buf + data_offset;
3164 iov.iov_len = data_len;
aa563d7b 3165 iov_iter_kvec(&iter, WRITE, &iov, 1, data_len);
4326ed2f
PS		 3166 } else {
3167 /* read response payload cannot be in both buf and pages */
3168 WARN_ONCE(1, "buf can not contain only a part of read data");
3169 rdata->result = -EIO;
3170 dequeue_mid(mid, rdata->result);
3171 return 0;
3172 }
3173
3174 /* set up first iov for signature check */
3175 rdata->iov[0].iov_base = buf;
3176 rdata->iov[0].iov_len = 4;
3177 rdata->iov[1].iov_base = buf + 4;
3178 rdata->iov[1].iov_len = server->vals->read_rsp_size - 4;
3179 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
3180 rdata->iov[0].iov_base, server->vals->read_rsp_size);
3181
3182 length = rdata->copy_into_pages(server, rdata, &iter);
3183
3184 kfree(bvec);
3185
3186 if (length < 0)
3187 return length;
3188
3189 dequeue_mid(mid, false);
3190 return length;
3191}
3192
c42a6abe
PS		 3193static int
3194receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
3195{
3196 char *buf = server->smallbuf;
3197 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
3198 unsigned int npages;
3199 struct page **pages;
3200 unsigned int len;
1fc6ad2f 3201 unsigned int buflen = server->pdu_size;
c42a6abe
PS		 3202 int rc;
3203 int i = 0;
3204
1fc6ad2f 3205 len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
c42a6abe
PS		 3206 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
3207
3208 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
3209 if (rc < 0)
3210 return rc;
3211 server->total_read += rc;
3212
1fc6ad2f 3213 len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
93012bf9 3214 server->vals->read_rsp_size;
c42a6abe
PS		 3215 npages = DIV_ROUND_UP(len, PAGE_SIZE);
3216
3217 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
3218 if (!pages) {
3219 rc = -ENOMEM;
3220 goto discard_data;
3221 }
3222
3223 for (; i < npages; i++) {
3224 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
3225 if (!pages[i]) {
3226 rc = -ENOMEM;
3227 goto discard_data;
3228 }
3229 }
3230
3231 /* read read data into pages */
3232 rc = read_data_into_pages(server, pages, npages, len);
3233 if (rc)
3234 goto free_pages;
3235
350be257 3236 rc = cifs_discard_remaining_data(server);
c42a6abe
PS		 3237 if (rc)
3238 goto free_pages;
3239
1fc6ad2f 3240 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
c42a6abe
PS		 3241 pages, npages, len);
3242 if (rc)
3243 goto free_pages;
3244
3245 *mid = smb2_find_mid(server, buf);
3246 if (*mid == NULL)
3247 cifs_dbg(FYI, "mid not found\n");
3248 else {
3249 cifs_dbg(FYI, "mid found\n");
3250 (*mid)->decrypted = true;
3251 rc = handle_read_data(server, *mid, buf,
3252 server->vals->read_rsp_size,
3253 pages, npages, len);
3254 }
3255
3256free_pages:
3257 for (i = i - 1; i >= 0; i--)
3258 put_page(pages[i]);
3259 kfree(pages);
3260 return rc;
3261discard_data:
350be257 3262 cifs_discard_remaining_data(server);
c42a6abe
PS		 3263 goto free_pages;
3264}
3265
4326ed2f
PS		 3266static int
3267receive_encrypted_standard(struct TCP_Server_Info *server,
b24df3e3
RS		 3268 struct mid_q_entry **mids, char **bufs,
3269 int *num_mids)
4326ed2f 3270{
b24df3e3 3271 int ret, length;
4326ed2f 3272 char *buf = server->smallbuf;
b24df3e3
RS		 3273 char *tmpbuf;
3274 struct smb2_sync_hdr *shdr;
2e96467d 3275 unsigned int pdu_length = server->pdu_size;
4326ed2f
PS		 3276 unsigned int buf_size;
3277 struct mid_q_entry *mid_entry;
b24df3e3
RS		 3278 int next_is_large;
3279 char *next_buffer = NULL;
3280
3281 *num_mids = 0;
4326ed2f
PS		 3282
3283 /* switch to large buffer if too big for a small one */
1fc6ad2f 3284 if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
4326ed2f
PS		 3285 server->large_buf = true;
3286 memcpy(server->bigbuf, buf, server->total_read);
3287 buf = server->bigbuf;
3288 }
3289
3290 /* now read the rest */
3291 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
1fc6ad2f 3292 pdu_length - HEADER_SIZE(server) + 1);
4326ed2f
PS		 3293 if (length < 0)
3294 return length;
3295 server->total_read += length;
3296
1fc6ad2f 3297 buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
4326ed2f
PS		 3298 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
3299 if (length)
3300 return length;
3301
b24df3e3
RS		 3302 next_is_large = server->large_buf;
3303 one_more:
3304 shdr = (struct smb2_sync_hdr *)buf;
3305 if (shdr->NextCommand) {
3306 if (next_is_large) {
3307 tmpbuf = server->bigbuf;
3308 next_buffer = (char *)cifs_buf_get();
3309 } else {
3310 tmpbuf = server->smallbuf;
3311 next_buffer = (char *)cifs_small_buf_get();
3312 }
3313 memcpy(next_buffer,
3314 tmpbuf + le32_to_cpu(shdr->NextCommand),
3315 pdu_length - le32_to_cpu(shdr->NextCommand));
3316 }
3317
4326ed2f
PS		 3318 mid_entry = smb2_find_mid(server, buf);
3319 if (mid_entry == NULL)
3320 cifs_dbg(FYI, "mid not found\n");
3321 else {
3322 cifs_dbg(FYI, "mid found\n");
3323 mid_entry->decrypted = true;
b24df3e3 3324 mid_entry->resp_buf_size = server->pdu_size;
4326ed2f
PS		 3325 }
3326
b24df3e3
RS		 3327 if (*num_mids >= MAX_COMPOUND) {
3328 cifs_dbg(VFS, "too many PDUs in compound\n");
3329 return -1;
3330 }
3331 bufs[*num_mids] = buf;
3332 mids[(*num_mids)++] = mid_entry;
4326ed2f
PS		 3333
3334 if (mid_entry && mid_entry->handle)
b24df3e3
RS		 3335 ret = mid_entry->handle(server, mid_entry);
3336 else
3337 ret = cifs_handle_standard(server, mid_entry);
3338
3339 if (ret == 0 && shdr->NextCommand) {
3340 pdu_length -= le32_to_cpu(shdr->NextCommand);
3341 server->large_buf = next_is_large;
3342 if (next_is_large)
3343 server->bigbuf = next_buffer;
3344 else
3345 server->smallbuf = next_buffer;
3346
3347 buf += le32_to_cpu(shdr->NextCommand);
3348 goto one_more;
3349 }
4326ed2f 3350
b24df3e3 3351 return ret;
4326ed2f
PS		 3352}
3353
3354static int
b24df3e3
RS		 3355smb3_receive_transform(struct TCP_Server_Info *server,
3356 struct mid_q_entry **mids, char **bufs, int *num_mids)
4326ed2f
PS		 3357{
3358 char *buf = server->smallbuf;
2e96467d 3359 unsigned int pdu_length = server->pdu_size;
4326ed2f
PS		 3360 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
3361 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
3362
1fc6ad2f 3363 if (pdu_length < sizeof(struct smb2_transform_hdr) +
4326ed2f
PS		 3364 sizeof(struct smb2_sync_hdr)) {
3365 cifs_dbg(VFS, "Transform message is too small (%u)\n",
3366 pdu_length);
3367 cifs_reconnect(server);
3368 wake_up(&server->response_q);
3369 return -ECONNABORTED;
3370 }
3371
1fc6ad2f 3372 if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
4326ed2f
PS		 3373 cifs_dbg(VFS, "Transform message is broken\n");
3374 cifs_reconnect(server);
3375 wake_up(&server->response_q);
3376 return -ECONNABORTED;
3377 }
3378
b24df3e3 3379 /* TODO: add support for compounds containing READ. */
1fc6ad2f 3380 if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server))
b24df3e3 3381 return receive_encrypted_read(server, &mids[0]);
4326ed2f 3382
b24df3e3 3383 return receive_encrypted_standard(server, mids, bufs, num_mids);
4326ed2f
PS		 3384}
3385
3386int
3387smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
3388{
3389 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
3390
1fc6ad2f 3391 return handle_read_data(server, mid, buf, server->pdu_size,
4326ed2f
PS		 3392 NULL, 0, 0);
3393}
3394
8ce79ec3
RS		 3395static int
3396smb2_next_header(char *buf)
3397{
3398 struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf;
3399 struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
3400
3401 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM)
3402 return sizeof(struct smb2_transform_hdr) +
3403 le32_to_cpu(t_hdr->OriginalMessageSize);
3404
3405 return le32_to_cpu(hdr->NextCommand);
3406}
3407
53ef1016 3408struct smb_version_operations smb20_operations = {
027e8eec 3409 .compare_fids = smb2_compare_fids,
2dc7e1c0 3410 .setup_request = smb2_setup_request,
c95b8eed 3411 .setup_async_request = smb2_setup_async_request,
2dc7e1c0 3412 .check_receive = smb2_check_receive,
28ea5290
PS		 3413 .add_credits = smb2_add_credits,
3414 .set_credits = smb2_set_credits,
3415 .get_credits_field = smb2_get_credits_field,
3416 .get_credits = smb2_get_credits,
cb7e9eab 3417 .wait_mtu_credits = cifs_wait_mtu_credits,
2dc7e1c0 3418 .get_next_mid = smb2_get_next_mid,
09a4707e
PS		 3419 .read_data_offset = smb2_read_data_offset,
3420 .read_data_length = smb2_read_data_length,
3421 .map_error = map_smb2_to_linux_error,
093b2bda
PS		 3422 .find_mid = smb2_find_mid,
3423 .check_message = smb2_check_message,
3424 .dump_detail = smb2_dump_detail,
d60622eb
PS		 3425 .clear_stats = smb2_clear_stats,
3426 .print_stats = smb2_print_stats,
983c88a4 3427 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3428 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 3429 .downgrade_oplock = smb2_downgrade_oplock,
ec2e4523
PS		 3430 .need_neg = smb2_need_neg,
3431 .negotiate = smb2_negotiate,
3a3bab50
PS		 3432 .negotiate_wsize = smb2_negotiate_wsize,
3433 .negotiate_rsize = smb2_negotiate_rsize,
5478f9ba
PS		 3434 .sess_setup = SMB2_sess_setup,
3435 .logoff = SMB2_logoff,
faaf946a
PS		 3436 .tree_connect = SMB2_tcon,
3437 .tree_disconnect = SMB2_tdis,
34f62640 3438 .qfs_tcon = smb2_qfs_tcon,
2503a0db 3439 .is_path_accessible = smb2_is_path_accessible,
9094fad1
PS		 3440 .can_echo = smb2_can_echo,
3441 .echo = SMB2_echo,
be4cb9e3
PS		 3442 .query_path_info = smb2_query_path_info,
3443 .get_srv_inum = smb2_get_srv_inum,
b7546bc5 3444 .query_file_info = smb2_query_file_info,
c839ff24
PS		 3445 .set_path_size = smb2_set_path_size,
3446 .set_file_size = smb2_set_file_size,
1feeaac7 3447 .set_file_info = smb2_set_file_info,
64a5cfa6 3448 .set_compression = smb2_set_compression,
a0e73183
PS		 3449 .mkdir = smb2_mkdir,
3450 .mkdir_setinfo = smb2_mkdir_setinfo,
1a500f01 3451 .rmdir = smb2_rmdir,
cbe6f439 3452 .unlink = smb2_unlink,
35143eb5 3453 .rename = smb2_rename_path,
568798cc 3454 .create_hardlink = smb2_create_hardlink,
b42bf888 3455 .query_symlink = smb2_query_symlink,
5b23c97d
SP		 3456 .query_mf_symlink = smb3_query_mf_symlink,
3457 .create_mf_symlink = smb3_create_mf_symlink,
f0df737e
PS		 3458 .open = smb2_open_file,
3459 .set_fid = smb2_set_fid,
3460 .close = smb2_close_file,
7a5cfb19 3461 .flush = smb2_flush_file,
09a4707e 3462 .async_readv = smb2_async_readv,
33319141 3463 .async_writev = smb2_async_writev,
d8e05039 3464 .sync_read = smb2_sync_read,
009d3443 3465 .sync_write = smb2_sync_write,
d324f08d
PS		 3466 .query_dir_first = smb2_query_dir_first,
3467 .query_dir_next = smb2_query_dir_next,
3468 .close_dir = smb2_close_dir,
3469 .calc_smb_size = smb2_calc_size,
2e44b288 3470 .is_status_pending = smb2_is_status_pending,
511c54a2 3471 .is_session_expired = smb2_is_session_expired,
983c88a4 3472 .oplock_response = smb2_oplock_response,
6fc05c25 3473 .queryfs = smb2_queryfs,
f7ba7fe6
PS		 3474 .mand_lock = smb2_mand_lock,
3475 .mand_unlock_range = smb2_unlock_range,
b140799a 3476 .push_mand_locks = smb2_push_mandatory_locks,
b8c32dbb
PS		 3477 .get_lease_key = smb2_get_lease_key,
3478 .set_lease_key = smb2_set_lease_key,
3479 .new_lease_key = smb2_new_lease_key,
38107d45 3480 .calc_signature = smb2_calc_signature,
53ef1016
PS		 3481 .is_read_op = smb2_is_read_op,
3482 .set_oplock_level = smb2_set_oplock_level,
a41a28bd 3483 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 3484 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 3485 .copychunk_range = smb2_copychunk_range,
7f6c5008 3486 .wp_retry_size = smb2_wp_retry_size,
52755808 3487 .dir_needs_close = smb2_dir_needs_close,
9d49640a 3488 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3489 .select_sectype = smb2_select_sectype,
95907fea
RS		 3490#ifdef CONFIG_CIFS_XATTR
3491 .query_all_EAs = smb2_query_eas,
5517554e 3492 .set_EA = smb2_set_ea,
95907fea 3493#endif /* CIFS_XATTR */
2f1afe25
SP		 3494#ifdef CONFIG_CIFS_ACL
3495 .get_acl = get_smb2_acl,
3496 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 3497 .set_acl = set_smb2_acl,
2f1afe25 3498#endif /* CIFS_ACL */
8ce79ec3 3499 .next_header = smb2_next_header,
f5b05d62 3500 .ioctl_query_info = smb2_ioctl_query_info,
38107d45
SF		 3501};
3502
53ef1016
PS		 3503struct smb_version_operations smb21_operations = {
3504 .compare_fids = smb2_compare_fids,
3505 .setup_request = smb2_setup_request,
3506 .setup_async_request = smb2_setup_async_request,
3507 .check_receive = smb2_check_receive,
3508 .add_credits = smb2_add_credits,
3509 .set_credits = smb2_set_credits,
3510 .get_credits_field = smb2_get_credits_field,
3511 .get_credits = smb2_get_credits,
cb7e9eab 3512 .wait_mtu_credits = smb2_wait_mtu_credits,
53ef1016
PS		 3513 .get_next_mid = smb2_get_next_mid,
3514 .read_data_offset = smb2_read_data_offset,
3515 .read_data_length = smb2_read_data_length,
3516 .map_error = map_smb2_to_linux_error,
3517 .find_mid = smb2_find_mid,
3518 .check_message = smb2_check_message,
3519 .dump_detail = smb2_dump_detail,
3520 .clear_stats = smb2_clear_stats,
3521 .print_stats = smb2_print_stats,
3522 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3523 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 3524 .downgrade_oplock = smb2_downgrade_oplock,
53ef1016
PS		 3525 .need_neg = smb2_need_neg,
3526 .negotiate = smb2_negotiate,
3527 .negotiate_wsize = smb2_negotiate_wsize,
3528 .negotiate_rsize = smb2_negotiate_rsize,
3529 .sess_setup = SMB2_sess_setup,
3530 .logoff = SMB2_logoff,
3531 .tree_connect = SMB2_tcon,
3532 .tree_disconnect = SMB2_tdis,
34f62640 3533 .qfs_tcon = smb2_qfs_tcon,
53ef1016
PS		 3534 .is_path_accessible = smb2_is_path_accessible,
3535 .can_echo = smb2_can_echo,
3536 .echo = SMB2_echo,
3537 .query_path_info = smb2_query_path_info,
3538 .get_srv_inum = smb2_get_srv_inum,
3539 .query_file_info = smb2_query_file_info,
3540 .set_path_size = smb2_set_path_size,
3541 .set_file_size = smb2_set_file_size,
3542 .set_file_info = smb2_set_file_info,
64a5cfa6 3543 .set_compression = smb2_set_compression,
53ef1016
PS		 3544 .mkdir = smb2_mkdir,
3545 .mkdir_setinfo = smb2_mkdir_setinfo,
3546 .rmdir = smb2_rmdir,
3547 .unlink = smb2_unlink,
3548 .rename = smb2_rename_path,
3549 .create_hardlink = smb2_create_hardlink,
3550 .query_symlink = smb2_query_symlink,
c22870ea 3551 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 3552 .create_mf_symlink = smb3_create_mf_symlink,
53ef1016
PS		 3553 .open = smb2_open_file,
3554 .set_fid = smb2_set_fid,
3555 .close = smb2_close_file,
3556 .flush = smb2_flush_file,
3557 .async_readv = smb2_async_readv,
3558 .async_writev = smb2_async_writev,
3559 .sync_read = smb2_sync_read,
3560 .sync_write = smb2_sync_write,
3561 .query_dir_first = smb2_query_dir_first,
3562 .query_dir_next = smb2_query_dir_next,
3563 .close_dir = smb2_close_dir,
3564 .calc_smb_size = smb2_calc_size,
3565 .is_status_pending = smb2_is_status_pending,
511c54a2 3566 .is_session_expired = smb2_is_session_expired,
53ef1016
PS		 3567 .oplock_response = smb2_oplock_response,
3568 .queryfs = smb2_queryfs,
3569 .mand_lock = smb2_mand_lock,
3570 .mand_unlock_range = smb2_unlock_range,
3571 .push_mand_locks = smb2_push_mandatory_locks,
3572 .get_lease_key = smb2_get_lease_key,
3573 .set_lease_key = smb2_set_lease_key,
3574 .new_lease_key = smb2_new_lease_key,
3575 .calc_signature = smb2_calc_signature,
3576 .is_read_op = smb21_is_read_op,
3577 .set_oplock_level = smb21_set_oplock_level,
a41a28bd 3578 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 3579 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 3580 .copychunk_range = smb2_copychunk_range,
7f6c5008 3581 .wp_retry_size = smb2_wp_retry_size,
52755808 3582 .dir_needs_close = smb2_dir_needs_close,
834170c8 3583 .enum_snapshots = smb3_enum_snapshots,
9d49640a 3584 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3585 .select_sectype = smb2_select_sectype,
95907fea
RS		 3586#ifdef CONFIG_CIFS_XATTR
3587 .query_all_EAs = smb2_query_eas,
5517554e 3588 .set_EA = smb2_set_ea,
95907fea 3589#endif /* CIFS_XATTR */
2f1afe25
SP		 3590#ifdef CONFIG_CIFS_ACL
3591 .get_acl = get_smb2_acl,
3592 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 3593 .set_acl = set_smb2_acl,
2f1afe25 3594#endif /* CIFS_ACL */
8ce79ec3 3595 .next_header = smb2_next_header,
f5b05d62 3596 .ioctl_query_info = smb2_ioctl_query_info,
53ef1016 3597};
38107d45
SF		 3598
3599struct smb_version_operations smb30_operations = {
3600 .compare_fids = smb2_compare_fids,
3601 .setup_request = smb2_setup_request,
3602 .setup_async_request = smb2_setup_async_request,
3603 .check_receive = smb2_check_receive,
3604 .add_credits = smb2_add_credits,
3605 .set_credits = smb2_set_credits,
3606 .get_credits_field = smb2_get_credits_field,
3607 .get_credits = smb2_get_credits,
cb7e9eab 3608 .wait_mtu_credits = smb2_wait_mtu_credits,
38107d45
SF		 3609 .get_next_mid = smb2_get_next_mid,
3610 .read_data_offset = smb2_read_data_offset,
3611 .read_data_length = smb2_read_data_length,
3612 .map_error = map_smb2_to_linux_error,
3613 .find_mid = smb2_find_mid,
3614 .check_message = smb2_check_message,
3615 .dump_detail = smb2_dump_detail,
3616 .clear_stats = smb2_clear_stats,
3617 .print_stats = smb2_print_stats,
769ee6a4 3618 .dump_share_caps = smb2_dump_share_caps,
38107d45 3619 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3620 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 3621 .downgrade_oplock = smb2_downgrade_oplock,
38107d45
SF		 3622 .need_neg = smb2_need_neg,
3623 .negotiate = smb2_negotiate,
3d621230
SF		 3624 .negotiate_wsize = smb3_negotiate_wsize,
3625 .negotiate_rsize = smb3_negotiate_rsize,
38107d45
SF		 3626 .sess_setup = SMB2_sess_setup,
3627 .logoff = SMB2_logoff,
3628 .tree_connect = SMB2_tcon,
3629 .tree_disconnect = SMB2_tdis,
af6a12ea 3630 .qfs_tcon = smb3_qfs_tcon,
38107d45
SF		 3631 .is_path_accessible = smb2_is_path_accessible,
3632 .can_echo = smb2_can_echo,
3633 .echo = SMB2_echo,
3634 .query_path_info = smb2_query_path_info,
3635 .get_srv_inum = smb2_get_srv_inum,
3636 .query_file_info = smb2_query_file_info,
3637 .set_path_size = smb2_set_path_size,
3638 .set_file_size = smb2_set_file_size,
3639 .set_file_info = smb2_set_file_info,
64a5cfa6 3640 .set_compression = smb2_set_compression,
38107d45
SF		 3641 .mkdir = smb2_mkdir,
3642 .mkdir_setinfo = smb2_mkdir_setinfo,
3643 .rmdir = smb2_rmdir,
3644 .unlink = smb2_unlink,
3645 .rename = smb2_rename_path,
3646 .create_hardlink = smb2_create_hardlink,
b42bf888 3647 .query_symlink = smb2_query_symlink,
c22870ea 3648 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 3649 .create_mf_symlink = smb3_create_mf_symlink,
38107d45
SF		 3650 .open = smb2_open_file,
3651 .set_fid = smb2_set_fid,
3652 .close = smb2_close_file,
3653 .flush = smb2_flush_file,
3654 .async_readv = smb2_async_readv,
3655 .async_writev = smb2_async_writev,
3656 .sync_read = smb2_sync_read,
3657 .sync_write = smb2_sync_write,
3658 .query_dir_first = smb2_query_dir_first,
3659 .query_dir_next = smb2_query_dir_next,
3660 .close_dir = smb2_close_dir,
3661 .calc_smb_size = smb2_calc_size,
3662 .is_status_pending = smb2_is_status_pending,
511c54a2 3663 .is_session_expired = smb2_is_session_expired,
38107d45
SF		 3664 .oplock_response = smb2_oplock_response,
3665 .queryfs = smb2_queryfs,
3666 .mand_lock = smb2_mand_lock,
3667 .mand_unlock_range = smb2_unlock_range,
3668 .push_mand_locks = smb2_push_mandatory_locks,
3669 .get_lease_key = smb2_get_lease_key,
3670 .set_lease_key = smb2_set_lease_key,
3671 .new_lease_key = smb2_new_lease_key,
373512ec 3672 .generate_signingkey = generate_smb30signingkey,
38107d45 3673 .calc_signature = smb3_calc_signature,
b3152e2c 3674 .set_integrity = smb3_set_integrity,
53ef1016 3675 .is_read_op = smb21_is_read_op,
42873b0a 3676 .set_oplock_level = smb3_set_oplock_level,
f047390a
PS		 3677 .create_lease_buf = smb3_create_lease_buf,
3678 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 3679 .copychunk_range = smb2_copychunk_range,
ca9e7a1c 3680 .duplicate_extents = smb2_duplicate_extents,
ff1c038a 3681 .validate_negotiate = smb3_validate_negotiate,
7f6c5008 3682 .wp_retry_size = smb2_wp_retry_size,
52755808 3683 .dir_needs_close = smb2_dir_needs_close,
31742c5a 3684 .fallocate = smb3_fallocate,
834170c8 3685 .enum_snapshots = smb3_enum_snapshots,
026e93dc 3686 .init_transform_rq = smb3_init_transform_rq,
4326ed2f
PS		 3687 .is_transform_hdr = smb3_is_transform_hdr,
3688 .receive_transform = smb3_receive_transform,
9d49640a 3689 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3690 .select_sectype = smb2_select_sectype,
95907fea
RS		 3691#ifdef CONFIG_CIFS_XATTR
3692 .query_all_EAs = smb2_query_eas,
5517554e 3693 .set_EA = smb2_set_ea,
95907fea 3694#endif /* CIFS_XATTR */
2f1afe25
SP		 3695#ifdef CONFIG_CIFS_ACL
3696 .get_acl = get_smb2_acl,
3697 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 3698 .set_acl = set_smb2_acl,
2f1afe25 3699#endif /* CIFS_ACL */
8ce79ec3 3700 .next_header = smb2_next_header,
f5b05d62 3701 .ioctl_query_info = smb2_ioctl_query_info,
1080ef75
SF		 3702};
3703
aab1893d
SF		 3704struct smb_version_operations smb311_operations = {
3705 .compare_fids = smb2_compare_fids,
3706 .setup_request = smb2_setup_request,
3707 .setup_async_request = smb2_setup_async_request,
3708 .check_receive = smb2_check_receive,
3709 .add_credits = smb2_add_credits,
3710 .set_credits = smb2_set_credits,
3711 .get_credits_field = smb2_get_credits_field,
3712 .get_credits = smb2_get_credits,
3713 .wait_mtu_credits = smb2_wait_mtu_credits,
3714 .get_next_mid = smb2_get_next_mid,
3715 .read_data_offset = smb2_read_data_offset,
3716 .read_data_length = smb2_read_data_length,
3717 .map_error = map_smb2_to_linux_error,
3718 .find_mid = smb2_find_mid,
3719 .check_message = smb2_check_message,
3720 .dump_detail = smb2_dump_detail,
3721 .clear_stats = smb2_clear_stats,
3722 .print_stats = smb2_print_stats,
3723 .dump_share_caps = smb2_dump_share_caps,
3724 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3725 .handle_cancelled_mid = smb2_handle_cancelled_mid,
aab1893d
SF		 3726 .downgrade_oplock = smb2_downgrade_oplock,
3727 .need_neg = smb2_need_neg,
3728 .negotiate = smb2_negotiate,
3d621230
SF		 3729 .negotiate_wsize = smb3_negotiate_wsize,
3730 .negotiate_rsize = smb3_negotiate_rsize,
aab1893d
SF		 3731 .sess_setup = SMB2_sess_setup,
3732 .logoff = SMB2_logoff,
3733 .tree_connect = SMB2_tcon,
3734 .tree_disconnect = SMB2_tdis,
3735 .qfs_tcon = smb3_qfs_tcon,
3736 .is_path_accessible = smb2_is_path_accessible,
3737 .can_echo = smb2_can_echo,
3738 .echo = SMB2_echo,
3739 .query_path_info = smb2_query_path_info,
3740 .get_srv_inum = smb2_get_srv_inum,
3741 .query_file_info = smb2_query_file_info,
3742 .set_path_size = smb2_set_path_size,
3743 .set_file_size = smb2_set_file_size,
3744 .set_file_info = smb2_set_file_info,
3745 .set_compression = smb2_set_compression,
3746 .mkdir = smb2_mkdir,
3747 .mkdir_setinfo = smb2_mkdir_setinfo,
bea851b8 3748 .posix_mkdir = smb311_posix_mkdir,
aab1893d
SF		 3749 .rmdir = smb2_rmdir,
3750 .unlink = smb2_unlink,
3751 .rename = smb2_rename_path,
3752 .create_hardlink = smb2_create_hardlink,
3753 .query_symlink = smb2_query_symlink,
3754 .query_mf_symlink = smb3_query_mf_symlink,
3755 .create_mf_symlink = smb3_create_mf_symlink,
3756 .open = smb2_open_file,
3757 .set_fid = smb2_set_fid,
3758 .close = smb2_close_file,
3759 .flush = smb2_flush_file,
3760 .async_readv = smb2_async_readv,
3761 .async_writev = smb2_async_writev,
3762 .sync_read = smb2_sync_read,
3763 .sync_write = smb2_sync_write,
3764 .query_dir_first = smb2_query_dir_first,
3765 .query_dir_next = smb2_query_dir_next,
3766 .close_dir = smb2_close_dir,
3767 .calc_smb_size = smb2_calc_size,
3768 .is_status_pending = smb2_is_status_pending,
511c54a2 3769 .is_session_expired = smb2_is_session_expired,
aab1893d 3770 .oplock_response = smb2_oplock_response,
2d304217 3771 .queryfs = smb311_queryfs,
aab1893d
SF		 3772 .mand_lock = smb2_mand_lock,
3773 .mand_unlock_range = smb2_unlock_range,
3774 .push_mand_locks = smb2_push_mandatory_locks,
3775 .get_lease_key = smb2_get_lease_key,
3776 .set_lease_key = smb2_set_lease_key,
3777 .new_lease_key = smb2_new_lease_key,
373512ec 3778 .generate_signingkey = generate_smb311signingkey,
aab1893d 3779 .calc_signature = smb3_calc_signature,
b3152e2c 3780 .set_integrity = smb3_set_integrity,
aab1893d
SF		 3781 .is_read_op = smb21_is_read_op,
3782 .set_oplock_level = smb3_set_oplock_level,
3783 .create_lease_buf = smb3_create_lease_buf,
3784 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 3785 .copychunk_range = smb2_copychunk_range,
02b16665 3786 .duplicate_extents = smb2_duplicate_extents,
aab1893d
SF		 3787/* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
3788 .wp_retry_size = smb2_wp_retry_size,
3789 .dir_needs_close = smb2_dir_needs_close,
3790 .fallocate = smb3_fallocate,
834170c8 3791 .enum_snapshots = smb3_enum_snapshots,
026e93dc 3792 .init_transform_rq = smb3_init_transform_rq,
4326ed2f
PS		 3793 .is_transform_hdr = smb3_is_transform_hdr,
3794 .receive_transform = smb3_receive_transform,
9d49640a 3795 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3796 .select_sectype = smb2_select_sectype,
95907fea
RS		 3797#ifdef CONFIG_CIFS_XATTR
3798 .query_all_EAs = smb2_query_eas,
5517554e 3799 .set_EA = smb2_set_ea,
95907fea 3800#endif /* CIFS_XATTR */
c1777df1
RS		 3801#ifdef CONFIG_CIFS_ACL
3802 .get_acl = get_smb2_acl,
3803 .get_acl_by_fid = get_smb2_acl_by_fid,
3804 .set_acl = set_smb2_acl,
3805#endif /* CIFS_ACL */
8ce79ec3 3806 .next_header = smb2_next_header,
f5b05d62 3807 .ioctl_query_info = smb2_ioctl_query_info,
aab1893d 3808};
aab1893d 3809
dd446b16
SF		 3810struct smb_version_values smb20_values = {
3811 .version_string = SMB20_VERSION_STRING,
3812 .protocol_id = SMB20_PROT_ID,
3813 .req_capabilities = 0, /* MBZ */
3814 .large_lock_type = 0,
3815 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3816 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3817 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3818 .header_size = sizeof(struct smb2_sync_hdr),
3819 .header_preamble_size = 0,
dd446b16
SF		 3820 .max_header_size = MAX_SMB2_HDR_SIZE,
3821 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3822 .lock_cmd = SMB2_LOCK,
3823 .cap_unix = 0,
3824 .cap_nt_find = SMB2_NT_FIND,
3825 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3826 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3827 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 3828 .create_lease_size = sizeof(struct create_lease),
dd446b16
SF		 3829};
3830
1080ef75
SF		 3831struct smb_version_values smb21_values = {
3832 .version_string = SMB21_VERSION_STRING,
e4aa25e7
SF		 3833 .protocol_id = SMB21_PROT_ID,
3834 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
3835 .large_lock_type = 0,
3836 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3837 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3838 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3839 .header_size = sizeof(struct smb2_sync_hdr),
3840 .header_preamble_size = 0,
e4aa25e7
SF		 3841 .max_header_size = MAX_SMB2_HDR_SIZE,
3842 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3843 .lock_cmd = SMB2_LOCK,
3844 .cap_unix = 0,
3845 .cap_nt_find = SMB2_NT_FIND,
3846 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3847 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3848 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 3849 .create_lease_size = sizeof(struct create_lease),
e4aa25e7
SF		 3850};
3851
9764c02f
SF		 3852struct smb_version_values smb3any_values = {
3853 .version_string = SMB3ANY_VERSION_STRING,
3854 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
f8015683 3855 .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		 3856 .large_lock_type = 0,
3857 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3858 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3859 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3860 .header_size = sizeof(struct smb2_sync_hdr),
3861 .header_preamble_size = 0,
9764c02f
SF		 3862 .max_header_size = MAX_SMB2_HDR_SIZE,
3863 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3864 .lock_cmd = SMB2_LOCK,
3865 .cap_unix = 0,
3866 .cap_nt_find = SMB2_NT_FIND,
3867 .cap_large_files = SMB2_LARGE_FILES,
3868 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3869 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3870 .create_lease_size = sizeof(struct create_lease_v2),
3871};
3872
3873struct smb_version_values smbdefault_values = {
3874 .version_string = SMBDEFAULT_VERSION_STRING,
3875 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
f8015683 3876 .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		 3877 .large_lock_type = 0,
3878 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3879 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3880 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3881 .header_size = sizeof(struct smb2_sync_hdr),
3882 .header_preamble_size = 0,
9764c02f
SF		 3883 .max_header_size = MAX_SMB2_HDR_SIZE,
3884 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3885 .lock_cmd = SMB2_LOCK,
3886 .cap_unix = 0,
3887 .cap_nt_find = SMB2_NT_FIND,
3888 .cap_large_files = SMB2_LARGE_FILES,
3889 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3890 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3891 .create_lease_size = sizeof(struct create_lease_v2),
3892};
3893
e4aa25e7
SF		 3894struct smb_version_values smb30_values = {
3895 .version_string = SMB30_VERSION_STRING,
3896 .protocol_id = SMB30_PROT_ID,
f8015683 3897 .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		 3898 .large_lock_type = 0,
3899 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3900 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3901 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3902 .header_size = sizeof(struct smb2_sync_hdr),
3903 .header_preamble_size = 0,
093b2bda 3904 .max_header_size = MAX_SMB2_HDR_SIZE,
09a4707e 3905 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2dc7e1c0 3906 .lock_cmd = SMB2_LOCK,
29e20f9c
PS		 3907 .cap_unix = 0,
3908 .cap_nt_find = SMB2_NT_FIND,
3909 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3910 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3911 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 3912 .create_lease_size = sizeof(struct create_lease_v2),
1080ef75 3913};
20b6d8b4
SF		 3914
3915struct smb_version_values smb302_values = {
3916 .version_string = SMB302_VERSION_STRING,
3917 .protocol_id = SMB302_PROT_ID,
f8015683 3918 .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		 3919 .large_lock_type = 0,
3920 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3921 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3922 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3923 .header_size = sizeof(struct smb2_sync_hdr),
3924 .header_preamble_size = 0,
20b6d8b4
SF		 3925 .max_header_size = MAX_SMB2_HDR_SIZE,
3926 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3927 .lock_cmd = SMB2_LOCK,
3928 .cap_unix = 0,
3929 .cap_nt_find = SMB2_NT_FIND,
3930 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3931 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3932 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 3933 .create_lease_size = sizeof(struct create_lease_v2),
20b6d8b4 3934};
5f7fbf73 3935
5f7fbf73
SF		 3936struct smb_version_values smb311_values = {
3937 .version_string = SMB311_VERSION_STRING,
3938 .protocol_id = SMB311_PROT_ID,
f8015683 3939 .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		 3940 .large_lock_type = 0,
3941 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3942 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3943 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3944 .header_size = sizeof(struct smb2_sync_hdr),
3945 .header_preamble_size = 0,
5f7fbf73
SF		 3946 .max_header_size = MAX_SMB2_HDR_SIZE,
3947 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3948 .lock_cmd = SMB2_LOCK,
3949 .cap_unix = 0,
3950 .cap_nt_find = SMB2_NT_FIND,
3951 .cap_large_files = SMB2_LARGE_FILES,
3952 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3953 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3954 .create_lease_size = sizeof(struct create_lease_v2),
3955};
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