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smb3: on kerberos mount if server doesn't specify auth type use krb5
[linux-2.6-block.git] / fs / cifs / smb2ops.c
CommitLineData
1080ef75
SF		 1/*
2 * SMB2 version specific operations
3 *
4 * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
5 *
6 * This library is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License v2 as published
8 * by the Free Software Foundation.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
3a3bab50 20#include <linux/pagemap.h>
6fc05c25 21#include <linux/vfs.h>
f29ebb47 22#include <linux/falloc.h>
026e93dc 23#include <linux/scatterlist.h>
4fa8e504 24#include <linux/uuid.h>
026e93dc 25#include <crypto/aead.h>
1080ef75 26#include "cifsglob.h"
2dc7e1c0
PS		 27#include "smb2pdu.h"
28#include "smb2proto.h"
28ea5290
PS		 29#include "cifsproto.h"
30#include "cifs_debug.h"
b42bf888 31#include "cifs_unicode.h"
2e44b288 32#include "smb2status.h"
6fc05c25 33#include "smb2glob.h"
834170c8 34#include "cifs_ioctl.h"
09902f8d 35#include "smbdirect.h"
28ea5290
PS		 36
37static int
38change_conf(struct TCP_Server_Info *server)
39{
40 server->credits += server->echo_credits + server->oplock_credits;
41 server->oplock_credits = server->echo_credits = 0;
42 switch (server->credits) {
43 case 0:
44 return -1;
45 case 1:
46 server->echoes = false;
47 server->oplocks = false;
f96637be 48 cifs_dbg(VFS, "disabling echoes and oplocks\n");
28ea5290
PS		 49 break;
50 case 2:
51 server->echoes = true;
52 server->oplocks = false;
53 server->echo_credits = 1;
f96637be 54 cifs_dbg(FYI, "disabling oplocks\n");
28ea5290
PS		 55 break;
56 default:
57 server->echoes = true;
e0ddde9d
SF		 58 if (enable_oplocks) {
59 server->oplocks = true;
60 server->oplock_credits = 1;
61 } else
62 server->oplocks = false;
63
28ea5290 64 server->echo_credits = 1;
28ea5290
PS		 65 }
66 server->credits -= server->echo_credits + server->oplock_credits;
67 return 0;
68}
69
70static void
71smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
72 const int optype)
73{
74 int *val, rc = 0;
75 spin_lock(&server->req_lock);
76 val = server->ops->get_credits_field(server, optype);
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;
42873b0a
PS		 1082 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
1083 &fid->purge_cache);
18cceb6a 1084 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
94f87371 1085 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
f0df737e
PS		 1086}
1087
760ad0ca 1088static void
f0df737e
PS		 1089smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
1090 struct cifs_fid *fid)
1091{
760ad0ca 1092 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
f0df737e
PS		 1093}
1094
41c1358e
SF		 1095static int
1096SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
1097 u64 persistent_fid, u64 volatile_fid,
1098 struct copychunk_ioctl *pcchunk)
1099{
1100 int rc;
1101 unsigned int ret_data_len;
1102 struct resume_key_req *res_key;
1103
1104 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
1105 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
1106 NULL, 0 /* no input */,
1107 (char **)&res_key, &ret_data_len);
1108
1109 if (rc) {
1110 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
1111 goto req_res_key_exit;
1112 }
1113 if (ret_data_len < sizeof(struct resume_key_req)) {
1114 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
1115 rc = -EINVAL;
1116 goto req_res_key_exit;
1117 }
1118 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
1119
1120req_res_key_exit:
1121 kfree(res_key);
1122 return rc;
1123}
1124
f5b05d62
RS		 1125static int
1126smb2_ioctl_query_info(const unsigned int xid,
8d8b26e5
RS		 1127 struct cifs_tcon *tcon,
1128 __le16 *path, int is_dir,
f5b05d62
RS		 1129 unsigned long p)
1130{
f5b05d62
RS		 1131 struct cifs_ses *ses = tcon->ses;
1132 char __user *arg = (char __user *)p;
1133 struct smb_query_info qi;
1134 struct smb_query_info __user *pqi;
1135 int rc = 0;
1136 int flags = 0;
f5b05d62 1137 struct smb2_query_info_rsp *rsp = NULL;
8d8b26e5
RS		 1138 void *buffer = NULL;
1139 struct smb_rqst rqst[3];
1140 int resp_buftype[3];
1141 struct kvec rsp_iov[3];
1142 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
1143 struct cifs_open_parms oparms;
1144 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1145 struct cifs_fid fid;
1146 struct kvec qi_iov[1];
1147 struct kvec close_iov[1];
1148
1149 memset(rqst, 0, sizeof(rqst));
1150 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1151 memset(rsp_iov, 0, sizeof(rsp_iov));
f5b05d62
RS		 1152
1153 if (copy_from_user(&qi, arg, sizeof(struct smb_query_info)))
1154 return -EFAULT;
1155
1156 if (qi.output_buffer_length > 1024)
1157 return -EINVAL;
1158
1159 if (!ses || !(ses->server))
1160 return -EIO;
1161
1162 if (smb3_encryption_required(tcon))
1163 flags |= CIFS_TRANSFORM_REQ;
1164
1165 buffer = kmalloc(qi.output_buffer_length, GFP_KERNEL);
1166 if (buffer == NULL)
1167 return -ENOMEM;
1168
1169 if (copy_from_user(buffer, arg + sizeof(struct smb_query_info),
1170 qi.output_buffer_length)) {
8d8b26e5
RS		 1171 rc = -EFAULT;
1172 goto iqinf_exit;
f5b05d62
RS		 1173 }
1174
8d8b26e5
RS		 1175 /* Open */
1176 memset(&open_iov, 0, sizeof(open_iov));
1177 rqst[0].rq_iov = open_iov;
1178 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1179
1180 memset(&oparms, 0, sizeof(oparms));
1181 oparms.tcon = tcon;
1182 oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
1183 oparms.disposition = FILE_OPEN;
1184 if (is_dir)
1185 oparms.create_options = CREATE_NOT_FILE;
1186 else
1187 oparms.create_options = CREATE_NOT_DIR;
1188 oparms.fid = &fid;
1189 oparms.reconnect = false;
1190
1191 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, path);
1192 if (rc)
1193 goto iqinf_exit;
1194 smb2_set_next_command(ses->server, &rqst[0]);
1195
1196 /* Query */
1197 memset(&qi_iov, 0, sizeof(qi_iov));
1198 rqst[1].rq_iov = qi_iov;
1199 rqst[1].rq_nvec = 1;
f5b05d62 1200
8d8b26e5 1201 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
f5b05d62
RS		 1202 qi.file_info_class, qi.info_type,
1203 qi.additional_information,
1204 qi.input_buffer_length,
1205 qi.output_buffer_length, buffer);
f5b05d62
RS		 1206 if (rc)
1207 goto iqinf_exit;
8d8b26e5
RS		 1208 smb2_set_next_command(ses->server, &rqst[1]);
1209 smb2_set_related(&rqst[1]);
1210
1211 /* Close */
1212 memset(&close_iov, 0, sizeof(close_iov));
1213 rqst[2].rq_iov = close_iov;
1214 rqst[2].rq_nvec = 1;
f5b05d62 1215
8d8b26e5 1216 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
f5b05d62
RS		 1217 if (rc)
1218 goto iqinf_exit;
8d8b26e5 1219 smb2_set_related(&rqst[2]);
f5b05d62 1220
8d8b26e5
RS		 1221 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1222 resp_buftype, rsp_iov);
1223 if (rc)
1224 goto iqinf_exit;
f5b05d62 1225 pqi = (struct smb_query_info __user *)arg;
8d8b26e5 1226 rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
f5b05d62
RS		 1227 if (le32_to_cpu(rsp->OutputBufferLength) < qi.input_buffer_length)
1228 qi.input_buffer_length = le32_to_cpu(rsp->OutputBufferLength);
1229 if (copy_to_user(&pqi->input_buffer_length, &qi.input_buffer_length,
1230 sizeof(qi.input_buffer_length))) {
1231 rc = -EFAULT;
1232 goto iqinf_exit;
1233 }
1234 if (copy_to_user(pqi + 1, rsp->Buffer, qi.input_buffer_length)) {
1235 rc = -EFAULT;
1236 goto iqinf_exit;
1237 }
1238
1239 iqinf_exit:
8d8b26e5
RS		 1240 kfree(buffer);
1241 SMB2_open_free(&rqst[0]);
1242 SMB2_query_info_free(&rqst[1]);
1243 SMB2_close_free(&rqst[2]);
1244 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1245 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1246 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
f5b05d62
RS		 1247 return rc;
1248}
1249
620d8745 1250static ssize_t
312bbc59 1251smb2_copychunk_range(const unsigned int xid,
41c1358e
SF		 1252 struct cifsFileInfo *srcfile,
1253 struct cifsFileInfo *trgtfile, u64 src_off,
1254 u64 len, u64 dest_off)
1255{
1256 int rc;
1257 unsigned int ret_data_len;
1258 struct copychunk_ioctl *pcchunk;
9bf0c9cd
SF		 1259 struct copychunk_ioctl_rsp *retbuf = NULL;
1260 struct cifs_tcon *tcon;
1261 int chunks_copied = 0;
1262 bool chunk_sizes_updated = false;
620d8745 1263 ssize_t bytes_written, total_bytes_written = 0;
41c1358e
SF		 1264
1265 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
1266
1267 if (pcchunk == NULL)
1268 return -ENOMEM;
1269
312bbc59 1270 cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
41c1358e
SF		 1271 /* Request a key from the server to identify the source of the copy */
1272 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
1273 srcfile->fid.persistent_fid,
1274 srcfile->fid.volatile_fid, pcchunk);
1275
1276 /* Note: request_res_key sets res_key null only if rc !=0 */
1277 if (rc)
9bf0c9cd 1278 goto cchunk_out;
41c1358e
SF		 1279
1280 /* For now array only one chunk long, will make more flexible later */
bc09d141 1281 pcchunk->ChunkCount = cpu_to_le32(1);
41c1358e 1282 pcchunk->Reserved = 0;
41c1358e
SF		 1283 pcchunk->Reserved2 = 0;
1284
9bf0c9cd 1285 tcon = tlink_tcon(trgtfile->tlink);
41c1358e 1286
9bf0c9cd
SF		 1287 while (len > 0) {
1288 pcchunk->SourceOffset = cpu_to_le64(src_off);
1289 pcchunk->TargetOffset = cpu_to_le64(dest_off);
1290 pcchunk->Length =
1291 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
41c1358e 1292
9bf0c9cd
SF		 1293 /* Request server copy to target from src identified by key */
1294 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1295 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
63a83b86 1296 true /* is_fsctl */, (char *)pcchunk,
9bf0c9cd
SF		 1297 sizeof(struct copychunk_ioctl), (char **)&retbuf,
1298 &ret_data_len);
1299 if (rc == 0) {
1300 if (ret_data_len !=
1301 sizeof(struct copychunk_ioctl_rsp)) {
1302 cifs_dbg(VFS, "invalid cchunk response size\n");
1303 rc = -EIO;
1304 goto cchunk_out;
1305 }
1306 if (retbuf->TotalBytesWritten == 0) {
1307 cifs_dbg(FYI, "no bytes copied\n");
1308 rc = -EIO;
1309 goto cchunk_out;
1310 }
1311 /*
1312 * Check if server claimed to write more than we asked
1313 */
1314 if (le32_to_cpu(retbuf->TotalBytesWritten) >
1315 le32_to_cpu(pcchunk->Length)) {
1316 cifs_dbg(VFS, "invalid copy chunk response\n");
1317 rc = -EIO;
1318 goto cchunk_out;
1319 }
1320 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
1321 cifs_dbg(VFS, "invalid num chunks written\n");
1322 rc = -EIO;
1323 goto cchunk_out;
1324 }
1325 chunks_copied++;
1326
620d8745
SP		 1327 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
1328 src_off += bytes_written;
1329 dest_off += bytes_written;
1330 len -= bytes_written;
1331 total_bytes_written += bytes_written;
9bf0c9cd 1332
620d8745 1333 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
9bf0c9cd
SF		 1334 le32_to_cpu(retbuf->ChunksWritten),
1335 le32_to_cpu(retbuf->ChunkBytesWritten),
620d8745 1336 bytes_written);
9bf0c9cd
SF		 1337 } else if (rc == -EINVAL) {
1338 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
1339 goto cchunk_out;
1340
1341 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1342 le32_to_cpu(retbuf->ChunksWritten),
1343 le32_to_cpu(retbuf->ChunkBytesWritten),
1344 le32_to_cpu(retbuf->TotalBytesWritten));
1345
1346 /*
1347 * Check if this is the first request using these sizes,
1348 * (ie check if copy succeed once with original sizes
1349 * and check if the server gave us different sizes after
1350 * we already updated max sizes on previous request).
1351 * if not then why is the server returning an error now
1352 */
1353 if ((chunks_copied != 0) || chunk_sizes_updated)
1354 goto cchunk_out;
1355
1356 /* Check that server is not asking us to grow size */
1357 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
1358 tcon->max_bytes_chunk)
1359 tcon->max_bytes_chunk =
1360 le32_to_cpu(retbuf->ChunkBytesWritten);
1361 else
1362 goto cchunk_out; /* server gave us bogus size */
1363
1364 /* No need to change MaxChunks since already set to 1 */
1365 chunk_sizes_updated = true;
2477bc58
SP		 1366 } else
1367 goto cchunk_out;
9bf0c9cd 1368 }
41c1358e 1369
9bf0c9cd 1370cchunk_out:
41c1358e 1371 kfree(pcchunk);
24df1483 1372 kfree(retbuf);
620d8745
SP		 1373 if (rc)
1374 return rc;
1375 else
1376 return total_bytes_written;
41c1358e
SF		 1377}
1378
7a5cfb19
PS		 1379static int
1380smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1381 struct cifs_fid *fid)
1382{
1383 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1384}
1385
09a4707e
PS		 1386static unsigned int
1387smb2_read_data_offset(char *buf)
1388{
1389 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1390 return rsp->DataOffset;
1391}
1392
1393static unsigned int
74dcf418 1394smb2_read_data_length(char *buf, bool in_remaining)
09a4707e
PS		 1395{
1396 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
74dcf418
LL		 1397
1398 if (in_remaining)
1399 return le32_to_cpu(rsp->DataRemaining);
1400
09a4707e
PS		 1401 return le32_to_cpu(rsp->DataLength);
1402}
1403
d8e05039
PS		 1404
1405static int
db8b631d 1406smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
d8e05039
PS		 1407 struct cifs_io_parms *parms, unsigned int *bytes_read,
1408 char **buf, int *buf_type)
1409{
db8b631d
SF		 1410 parms->persistent_fid = pfid->persistent_fid;
1411 parms->volatile_fid = pfid->volatile_fid;
d8e05039
PS		 1412 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1413}
1414
009d3443 1415static int
db8b631d 1416smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
009d3443
PS		 1417 struct cifs_io_parms *parms, unsigned int *written,
1418 struct kvec *iov, unsigned long nr_segs)
1419{
1420
db8b631d
SF		 1421 parms->persistent_fid = pfid->persistent_fid;
1422 parms->volatile_fid = pfid->volatile_fid;
009d3443
PS		 1423 return SMB2_write(xid, parms, written, iov, nr_segs);
1424}
1425
d43cc793
SF		 1426/* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1427static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1428 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1429{
1430 struct cifsInodeInfo *cifsi;
1431 int rc;
1432
1433 cifsi = CIFS_I(inode);
1434
1435 /* if file already sparse don't bother setting sparse again */
1436 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1437 return true; /* already sparse */
1438
1439 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1440 return true; /* already not sparse */
1441
1442 /*
1443 * Can't check for sparse support on share the usual way via the
1444 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1445 * since Samba server doesn't set the flag on the share, yet
1446 * supports the set sparse FSCTL and returns sparse correctly
1447 * in the file attributes. If we fail setting sparse though we
1448 * mark that server does not support sparse files for this share
1449 * to avoid repeatedly sending the unsupported fsctl to server
1450 * if the file is repeatedly extended.
1451 */
1452 if (tcon->broken_sparse_sup)
1453 return false;
1454
1455 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1456 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
63a83b86 1457 true /* is_fctl */,
51146625 1458 &setsparse, 1, NULL, NULL);
d43cc793
SF		 1459 if (rc) {
1460 tcon->broken_sparse_sup = true;
1461 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1462 return false;
1463 }
1464
1465 if (setsparse)
1466 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1467 else
1468 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1469
1470 return true;
1471}
1472
c839ff24
PS		 1473static int
1474smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1475 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1476{
1477 __le64 eof = cpu_to_le64(size);
3d1a3745
SF		 1478 struct inode *inode;
1479
1480 /*
1481 * If extending file more than one page make sparse. Many Linux fs
1482 * make files sparse by default when extending via ftruncate
1483 */
2b0143b5 1484 inode = d_inode(cfile->dentry);
3d1a3745
SF		 1485
1486 if (!set_alloc && (size > inode->i_size + 8192)) {
3d1a3745 1487 __u8 set_sparse = 1;
d43cc793
SF		 1488
1489 /* whether set sparse succeeds or not, extend the file */
1490 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
3d1a3745
SF		 1491 }
1492
c839ff24 1493 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3764cbd1 1494 cfile->fid.volatile_fid, cfile->pid, &eof);
c839ff24
PS		 1495}
1496
02b16665
SF		 1497static int
1498smb2_duplicate_extents(const unsigned int xid,
1499 struct cifsFileInfo *srcfile,
1500 struct cifsFileInfo *trgtfile, u64 src_off,
1501 u64 len, u64 dest_off)
1502{
1503 int rc;
1504 unsigned int ret_data_len;
02b16665
SF		 1505 struct duplicate_extents_to_file dup_ext_buf;
1506 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1507
1508 /* server fileays advertise duplicate extent support with this flag */
1509 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1510 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1511 return -EOPNOTSUPP;
1512
1513 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1514 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1515 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1516 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1517 dup_ext_buf.ByteCount = cpu_to_le64(len);
1518 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
1519 src_off, dest_off, len);
1520
1521 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1522 if (rc)
1523 goto duplicate_extents_out;
1524
1525 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1526 trgtfile->fid.volatile_fid,
1527 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
63a83b86 1528 true /* is_fsctl */,
51146625 1529 (char *)&dup_ext_buf,
02b16665 1530 sizeof(struct duplicate_extents_to_file),
24df1483 1531 NULL,
02b16665
SF		 1532 &ret_data_len);
1533
1534 if (ret_data_len > 0)
1535 cifs_dbg(FYI, "non-zero response length in duplicate extents");
1536
1537duplicate_extents_out:
1538 return rc;
1539}
02b16665 1540
64a5cfa6
SF		 1541static int
1542smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
1543 struct cifsFileInfo *cfile)
1544{
1545 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
1546 cfile->fid.volatile_fid);
1547}
1548
b3152e2c
SF		 1549static int
1550smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
1551 struct cifsFileInfo *cfile)
1552{
1553 struct fsctl_set_integrity_information_req integr_info;
b3152e2c
SF		 1554 unsigned int ret_data_len;
1555
1556 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
1557 integr_info.Flags = 0;
1558 integr_info.Reserved = 0;
1559
1560 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1561 cfile->fid.volatile_fid,
1562 FSCTL_SET_INTEGRITY_INFORMATION,
63a83b86 1563 true /* is_fsctl */,
51146625 1564 (char *)&integr_info,
b3152e2c 1565 sizeof(struct fsctl_set_integrity_information_req),
24df1483 1566 NULL,
b3152e2c
SF		 1567 &ret_data_len);
1568
1569}
1570
e02789a5
SF		 1571/* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
1572#define GMT_TOKEN_SIZE 50
1573
1574/*
1575 * Input buffer contains (empty) struct smb_snapshot array with size filled in
1576 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
1577 */
834170c8
SF		 1578static int
1579smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
1580 struct cifsFileInfo *cfile, void __user *ioc_buf)
1581{
1582 char *retbuf = NULL;
1583 unsigned int ret_data_len = 0;
1584 int rc;
1585 struct smb_snapshot_array snapshot_in;
1586
1587 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1588 cfile->fid.volatile_fid,
1589 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
63a83b86 1590 true /* is_fsctl */,
51146625 1591 NULL, 0 /* no input data */,
834170c8
SF		 1592 (char **)&retbuf,
1593 &ret_data_len);
1594 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
1595 rc, ret_data_len);
1596 if (rc)
1597 return rc;
1598
1599 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
1600 /* Fixup buffer */
1601 if (copy_from_user(&snapshot_in, ioc_buf,
1602 sizeof(struct smb_snapshot_array))) {
1603 rc = -EFAULT;
1604 kfree(retbuf);
1605 return rc;
1606 }
834170c8 1607
e02789a5
SF		 1608 /*
1609 * Check for min size, ie not large enough to fit even one GMT
1610 * token (snapshot). On the first ioctl some users may pass in
1611 * smaller size (or zero) to simply get the size of the array
1612 * so the user space caller can allocate sufficient memory
1613 * and retry the ioctl again with larger array size sufficient
1614 * to hold all of the snapshot GMT tokens on the second try.
1615 */
1616 if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
1617 ret_data_len = sizeof(struct smb_snapshot_array);
1618
1619 /*
1620 * We return struct SRV_SNAPSHOT_ARRAY, followed by
1621 * the snapshot array (of 50 byte GMT tokens) each
1622 * representing an available previous version of the data
1623 */
1624 if (ret_data_len > (snapshot_in.snapshot_array_size +
1625 sizeof(struct smb_snapshot_array)))
1626 ret_data_len = snapshot_in.snapshot_array_size +
1627 sizeof(struct smb_snapshot_array);
834170c8
SF		 1628
1629 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
1630 rc = -EFAULT;
1631 }
1632
1633 kfree(retbuf);
1634 return rc;
1635}
1636
d324f08d
PS		 1637static int
1638smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
1639 const char *path, struct cifs_sb_info *cifs_sb,
1640 struct cifs_fid *fid, __u16 search_flags,
1641 struct cifs_search_info *srch_inf)
1642{
1643 __le16 *utf16_path;
1644 int rc;
2e44b288 1645 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047 1646 struct cifs_open_parms oparms;
d324f08d
PS		 1647
1648 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1649 if (!utf16_path)
1650 return -ENOMEM;
1651
064f6047
PS		 1652 oparms.tcon = tcon;
1653 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
1654 oparms.disposition = FILE_OPEN;
5e19697b
SF		 1655 if (backup_cred(cifs_sb))
1656 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1657 else
1658 oparms.create_options = 0;
064f6047 1659 oparms.fid = fid;
9cbc0b73 1660 oparms.reconnect = false;
064f6047 1661
9d874c36 1662 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
d324f08d
PS		 1663 kfree(utf16_path);
1664 if (rc) {
dcd87838 1665 cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
d324f08d
PS		 1666 return rc;
1667 }
1668
1669 srch_inf->entries_in_buffer = 0;
0595751f 1670 srch_inf->index_of_last_entry = 2;
d324f08d 1671
064f6047
PS		 1672 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
1673 fid->volatile_fid, 0, srch_inf);
d324f08d 1674 if (rc) {
dcd87838 1675 cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
064f6047 1676 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
d324f08d
PS		 1677 }
1678 return rc;
1679}
1680
1681static int
1682smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
1683 struct cifs_fid *fid, __u16 search_flags,
1684 struct cifs_search_info *srch_inf)
1685{
1686 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
1687 fid->volatile_fid, 0, srch_inf);
1688}
1689
1690static int
1691smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1692 struct cifs_fid *fid)
1693{
1694 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1695}
1696
2e44b288
PS		 1697/*
1698* If we negotiate SMB2 protocol and get STATUS_PENDING - update
1699* the number of credits and return true. Otherwise - return false.
1700*/
1701static bool
1702smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
1703{
49f466bd 1704 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2e44b288 1705
31473fc4 1706 if (shdr->Status != STATUS_PENDING)
2e44b288
PS		 1707 return false;
1708
1709 if (!length) {
1710 spin_lock(&server->req_lock);
31473fc4 1711 server->credits += le16_to_cpu(shdr->CreditRequest);
2e44b288
PS		 1712 spin_unlock(&server->req_lock);
1713 wake_up(&server->request_q);
1714 }
1715
1716 return true;
1717}
1718
511c54a2
PS		 1719static bool
1720smb2_is_session_expired(char *buf)
1721{
49f466bd 1722 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
511c54a2 1723
d81243c6
MS		 1724 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
1725 shdr->Status != STATUS_USER_SESSION_DELETED)
511c54a2
PS		 1726 return false;
1727
e68a932b
SF		 1728 trace_smb3_ses_expired(shdr->TreeId, shdr->SessionId,
1729 le16_to_cpu(shdr->Command),
1730 le64_to_cpu(shdr->MessageId));
d81243c6 1731 cifs_dbg(FYI, "Session expired or deleted\n");
e68a932b 1732
511c54a2
PS		 1733 return true;
1734}
1735
983c88a4
PS		 1736static int
1737smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1738 struct cifsInodeInfo *cinode)
1739{
0822f514
PS		 1740 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1741 return SMB2_lease_break(0, tcon, cinode->lease_key,
1742 smb2_get_lease_state(cinode));
1743
983c88a4
PS		 1744 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1745 fid->volatile_fid,
18cceb6a 1746 CIFS_CACHE_READ(cinode) ? 1 : 0);
983c88a4
PS		 1747}
1748
c5a5f38f 1749void
730928c8
RS		 1750smb2_set_related(struct smb_rqst *rqst)
1751{
1752 struct smb2_sync_hdr *shdr;
1753
1754 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
1755 shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
1756}
1757
1758char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
1759
c5a5f38f 1760void
730928c8
RS		 1761smb2_set_next_command(struct TCP_Server_Info *server, struct smb_rqst *rqst)
1762{
1763 struct smb2_sync_hdr *shdr;
1764 unsigned long len = smb_rqst_len(server, rqst);
1765
1766 /* SMB headers in a compound are 8 byte aligned. */
1767 if (len & 7) {
1768 rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
1769 rqst->rq_iov[rqst->rq_nvec].iov_len = 8 - (len & 7);
1770 rqst->rq_nvec++;
1771 len = smb_rqst_len(server, rqst);
1772 }
1773
1774 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
1775 shdr->NextCommand = cpu_to_le32(len);
1776}
1777
6fc05c25
PS		 1778static int
1779smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1780 struct kstatfs *buf)
1781{
730928c8
RS		 1782 struct smb2_query_info_rsp *rsp;
1783 struct smb2_fs_full_size_info *info = NULL;
1784 struct smb_rqst rqst[3];
1785 int resp_buftype[3];
1786 struct kvec rsp_iov[3];
4d8dfafc 1787 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
730928c8
RS		 1788 struct kvec qi_iov[1];
1789 struct kvec close_iov[1];
1790 struct cifs_ses *ses = tcon->ses;
1791 struct TCP_Server_Info *server = ses->server;
6fc05c25
PS		 1792 __le16 srch_path = 0; /* Null - open root of share */
1793 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 1794 struct cifs_open_parms oparms;
1795 struct cifs_fid fid;
730928c8
RS		 1796 int flags = 0;
1797 int rc;
1798
1799 if (smb3_encryption_required(tcon))
1800 flags |= CIFS_TRANSFORM_REQ;
1801
1802 memset(rqst, 0, sizeof(rqst));
c5a5f38f 1803 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
730928c8
RS		 1804 memset(rsp_iov, 0, sizeof(rsp_iov));
1805
1806 memset(&open_iov, 0, sizeof(open_iov));
1807 rqst[0].rq_iov = open_iov;
4d8dfafc 1808 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
064f6047
PS		 1809
1810 oparms.tcon = tcon;
1811 oparms.desired_access = FILE_READ_ATTRIBUTES;
1812 oparms.disposition = FILE_OPEN;
1813 oparms.create_options = 0;
1814 oparms.fid = &fid;
9cbc0b73 1815 oparms.reconnect = false;
6fc05c25 1816
730928c8 1817 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &srch_path);
6fc05c25 1818 if (rc)
730928c8
RS		 1819 goto qfs_exit;
1820 smb2_set_next_command(server, &rqst[0]);
1821
1822 memset(&qi_iov, 0, sizeof(qi_iov));
1823 rqst[1].rq_iov = qi_iov;
1824 rqst[1].rq_nvec = 1;
1825
1826 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
1827 FS_FULL_SIZE_INFORMATION,
1828 SMB2_O_INFO_FILESYSTEM, 0,
f5b05d62
RS		 1829 sizeof(struct smb2_fs_full_size_info), 0,
1830 NULL);
730928c8
RS		 1831 if (rc)
1832 goto qfs_exit;
1833 smb2_set_next_command(server, &rqst[1]);
1834 smb2_set_related(&rqst[1]);
1835
1836 memset(&close_iov, 0, sizeof(close_iov));
1837 rqst[2].rq_iov = close_iov;
1838 rqst[2].rq_nvec = 1;
1839
1840 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
1841 if (rc)
1842 goto qfs_exit;
1843 smb2_set_related(&rqst[2]);
1844
1845 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1846 resp_buftype, rsp_iov);
1847 if (rc)
1848 goto qfs_exit;
1849
1850 rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
6fc05c25 1851 buf->f_type = SMB2_MAGIC_NUMBER;
730928c8
RS		 1852 info = (struct smb2_fs_full_size_info *)(
1853 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
1854 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
1855 le32_to_cpu(rsp->OutputBufferLength),
1856 &rsp_iov[1],
1857 sizeof(struct smb2_fs_full_size_info));
1858 if (!rc)
1859 smb2_copy_fs_info_to_kstatfs(info, buf);
1860
1861qfs_exit:
1862 SMB2_open_free(&rqst[0]);
1863 SMB2_query_info_free(&rqst[1]);
1864 SMB2_close_free(&rqst[2]);
1865 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1866 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1867 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
6fc05c25
PS		 1868 return rc;
1869}
1870
2d304217
SF		 1871static int
1872smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1873 struct kstatfs *buf)
1874{
1875 int rc;
1876 __le16 srch_path = 0; /* Null - open root of share */
1877 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1878 struct cifs_open_parms oparms;
1879 struct cifs_fid fid;
1880
1881 if (!tcon->posix_extensions)
1882 return smb2_queryfs(xid, tcon, buf);
1883
1884 oparms.tcon = tcon;
1885 oparms.desired_access = FILE_READ_ATTRIBUTES;
1886 oparms.disposition = FILE_OPEN;
1887 oparms.create_options = 0;
1888 oparms.fid = &fid;
1889 oparms.reconnect = false;
1890
1891 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
1892 if (rc)
1893 return rc;
1894
1895 rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
1896 fid.volatile_fid, buf);
1897 buf->f_type = SMB2_MAGIC_NUMBER;
1898 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1899 return rc;
1900}
2d304217 1901
027e8eec
PS		 1902static bool
1903smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
1904{
1905 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
1906 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
1907}
1908
f7ba7fe6
PS		 1909static int
1910smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
1911 __u64 length, __u32 type, int lock, int unlock, bool wait)
1912{
1913 if (unlock && !lock)
1914 type = SMB2_LOCKFLAG_UNLOCK;
1915 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
1916 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
1917 current->tgid, length, offset, type, wait);
1918}
1919
b8c32dbb
PS		 1920static void
1921smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
1922{
1923 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
1924}
1925
1926static void
1927smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
1928{
1929 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
1930}
1931
1932static void
1933smb2_new_lease_key(struct cifs_fid *fid)
1934{
fa70b87c 1935 generate_random_uuid(fid->lease_key);
b8c32dbb
PS		 1936}
1937
9d49640a
AA		 1938static int
1939smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
1940 const char *search_name,
1941 struct dfs_info3_param **target_nodes,
1942 unsigned int *num_of_nodes,
1943 const struct nls_table *nls_codepage, int remap)
1944{
1945 int rc;
1946 __le16 *utf16_path = NULL;
1947 int utf16_path_len = 0;
1948 struct cifs_tcon *tcon;
1949 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
1950 struct get_dfs_referral_rsp *dfs_rsp = NULL;
1951 u32 dfs_req_size = 0, dfs_rsp_size = 0;
1952
1953 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
1954
1955 /*
63a83b86 1956 * Try to use the IPC tcon, otherwise just use any
9d49640a 1957 */
63a83b86
AA		 1958 tcon = ses->tcon_ipc;
1959 if (tcon == NULL) {
1960 spin_lock(&cifs_tcp_ses_lock);
1961 tcon = list_first_entry_or_null(&ses->tcon_list,
1962 struct cifs_tcon,
1963 tcon_list);
1964 if (tcon)
1965 tcon->tc_count++;
1966 spin_unlock(&cifs_tcp_ses_lock);
1967 }
1968
1969 if (tcon == NULL) {
9d49640a
AA		 1970 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
1971 ses);
1972 rc = -ENOTCONN;
1973 goto out;
1974 }
1975
1976 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
1977 &utf16_path_len,
1978 nls_codepage, remap);
1979 if (!utf16_path) {
1980 rc = -ENOMEM;
1981 goto out;
1982 }
1983
1984 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
1985 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
1986 if (!dfs_req) {
1987 rc = -ENOMEM;
1988 goto out;
1989 }
1990
1991 /* Highest DFS referral version understood */
1992 dfs_req->MaxReferralLevel = DFS_VERSION;
1993
1994 /* Path to resolve in an UTF-16 null-terminated string */
1995 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
1996
1997 do {
9d49640a
AA		 1998 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1999 FSCTL_DFS_GET_REFERRALS,
63a83b86 2000 true /* is_fsctl */,
9d49640a
AA		 2001 (char *)dfs_req, dfs_req_size,
2002 (char **)&dfs_rsp, &dfs_rsp_size);
9d49640a
AA		 2003 } while (rc == -EAGAIN);
2004
2005 if (rc) {
2564f2ff 2006 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
5702591f 2007 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
9d49640a
AA		 2008 goto out;
2009 }
2010
2011 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
2012 num_of_nodes, target_nodes,
2013 nls_codepage, remap, search_name,
2014 true /* is_unicode */);
2015 if (rc) {
2016 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
2017 goto out;
2018 }
2019
2020 out:
63a83b86
AA		 2021 if (tcon && !tcon->ipc) {
2022 /* ipc tcons are not refcounted */
9d49640a
AA		 2023 spin_lock(&cifs_tcp_ses_lock);
2024 tcon->tc_count--;
2025 spin_unlock(&cifs_tcp_ses_lock);
2026 }
2027 kfree(utf16_path);
2028 kfree(dfs_req);
2029 kfree(dfs_rsp);
2030 return rc;
2031}
7893242e
PS		 2032#define SMB2_SYMLINK_STRUCT_SIZE \
2033 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
2034
b42bf888
PS		 2035static int
2036smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
2037 const char *full_path, char **target_path,
2038 struct cifs_sb_info *cifs_sb)
2039{
2040 int rc;
2041 __le16 *utf16_path;
2042 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2043 struct cifs_open_parms oparms;
2044 struct cifs_fid fid;
91cb74f5 2045 struct kvec err_iov = {NULL, 0};
9d874c36
RS		 2046 struct smb2_err_rsp *err_buf = NULL;
2047 int resp_buftype;
b42bf888 2048 struct smb2_symlink_err_rsp *symlink;
7893242e
PS		 2049 unsigned int sub_len;
2050 unsigned int sub_offset;
2051 unsigned int print_len;
2052 unsigned int print_offset;
b42bf888
PS		 2053
2054 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
2055
2056 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
2057 if (!utf16_path)
2058 return -ENOMEM;
2059
2060 oparms.tcon = tcon;
2061 oparms.desired_access = FILE_READ_ATTRIBUTES;
2062 oparms.disposition = FILE_OPEN;
5e19697b
SF		 2063 if (backup_cred(cifs_sb))
2064 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2065 else
2066 oparms.create_options = 0;
b42bf888
PS		 2067 oparms.fid = &fid;
2068 oparms.reconnect = false;
2069
9d874c36
RS		 2070 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_iov,
2071 &resp_buftype);
0d568cd3 2072 if (!rc || !err_iov.iov_base) {
9d874c36 2073 rc = -ENOENT;
ff361fda 2074 goto free_path;
b42bf888 2075 }
7893242e 2076
91cb74f5 2077 err_buf = err_iov.iov_base;
7893242e 2078 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1fc6ad2f 2079 err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) {
9d874c36
RS		 2080 rc = -ENOENT;
2081 goto querty_exit;
7893242e
PS		 2082 }
2083
b42bf888
PS		 2084 /* open must fail on symlink - reset rc */
2085 rc = 0;
2086 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
2087 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
2088 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
7893242e
PS		 2089 print_len = le16_to_cpu(symlink->PrintNameLength);
2090 print_offset = le16_to_cpu(symlink->PrintNameOffset);
2091
1fc6ad2f 2092 if (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
9d874c36
RS		 2093 rc = -ENOENT;
2094 goto querty_exit;
7893242e
PS		 2095 }
2096
1fc6ad2f
RS		 2097 if (err_iov.iov_len <
2098 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
9d874c36
RS		 2099 rc = -ENOENT;
2100 goto querty_exit;
7893242e
PS		 2101 }
2102
b42bf888
PS		 2103 *target_path = cifs_strndup_from_utf16(
2104 (char *)symlink->PathBuffer + sub_offset,
2105 sub_len, true, cifs_sb->local_nls);
2106 if (!(*target_path)) {
9d874c36
RS		 2107 rc = -ENOMEM;
2108 goto querty_exit;
b42bf888
PS		 2109 }
2110 convert_delimiter(*target_path, '/');
2111 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
9d874c36
RS		 2112
2113 querty_exit:
2114 free_rsp_buf(resp_buftype, err_buf);
ff361fda 2115 free_path:
b42bf888
PS		 2116 kfree(utf16_path);
2117 return rc;
2118}
2119
84908426 2120#ifdef CONFIG_CIFS_ACL
2f1afe25
SP		 2121static struct cifs_ntsd *
2122get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
2123 const struct cifs_fid *cifsfid, u32 *pacllen)
2124{
2125 struct cifs_ntsd *pntsd = NULL;
2126 unsigned int xid;
2127 int rc = -EOPNOTSUPP;
2128 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2129
2130 if (IS_ERR(tlink))
2131 return ERR_CAST(tlink);
2132
2133 xid = get_xid();
2134 cifs_dbg(FYI, "trying to get acl\n");
2135
2136 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
2137 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
2138 free_xid(xid);
2139
2140 cifs_put_tlink(tlink);
2141
2142 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
2143 if (rc)
2144 return ERR_PTR(rc);
2145 return pntsd;
2146
2147}
2148
2149static struct cifs_ntsd *
2150get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
2151 const char *path, u32 *pacllen)
2152{
2153 struct cifs_ntsd *pntsd = NULL;
2154 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2155 unsigned int xid;
2156 int rc;
2157 struct cifs_tcon *tcon;
2158 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2159 struct cifs_fid fid;
2160 struct cifs_open_parms oparms;
2161 __le16 *utf16_path;
2162
2163 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
2164 if (IS_ERR(tlink))
2165 return ERR_CAST(tlink);
2166
2167 tcon = tlink_tcon(tlink);
2168 xid = get_xid();
2169
2170 if (backup_cred(cifs_sb))
709340a0 2171 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2f1afe25
SP		 2172 else
2173 oparms.create_options = 0;
2174
2175 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
cfe89091
SF		 2176 if (!utf16_path) {
2177 rc = -ENOMEM;
2178 free_xid(xid);
2179 return ERR_PTR(rc);
2180 }
2f1afe25
SP		 2181
2182 oparms.tcon = tcon;
2183 oparms.desired_access = READ_CONTROL;
2184 oparms.disposition = FILE_OPEN;
2185 oparms.fid = &fid;
2186 oparms.reconnect = false;
2187
9d874c36 2188 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2f1afe25
SP		 2189 kfree(utf16_path);
2190 if (!rc) {
2191 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
2192 fid.volatile_fid, (void **)&pntsd, pacllen);
2193 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2194 }
2195
2196 cifs_put_tlink(tlink);
2197 free_xid(xid);
2198
2199 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
2200 if (rc)
2201 return ERR_PTR(rc);
2202 return pntsd;
2203}
2204
366ed846
SP		 2205#ifdef CONFIG_CIFS_ACL
2206static int
2207set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
2208 struct inode *inode, const char *path, int aclflag)
2209{
2210 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2211 unsigned int xid;
2212 int rc, access_flags = 0;
2213 struct cifs_tcon *tcon;
2214 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2215 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2216 struct cifs_fid fid;
2217 struct cifs_open_parms oparms;
2218 __le16 *utf16_path;
2219
2220 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
2221 if (IS_ERR(tlink))
2222 return PTR_ERR(tlink);
2223
2224 tcon = tlink_tcon(tlink);
2225 xid = get_xid();
2226
2227 if (backup_cred(cifs_sb))
2228 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2229 else
2230 oparms.create_options = 0;
2231
2232 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
2233 access_flags = WRITE_OWNER;
2234 else
2235 access_flags = WRITE_DAC;
2236
2237 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
cfe89091
SF		 2238 if (!utf16_path) {
2239 rc = -ENOMEM;
2240 free_xid(xid);
2241 return rc;
2242 }
366ed846
SP		 2243
2244 oparms.tcon = tcon;
2245 oparms.desired_access = access_flags;
2246 oparms.disposition = FILE_OPEN;
2247 oparms.path = path;
2248 oparms.fid = &fid;
2249 oparms.reconnect = false;
2250
9d874c36 2251 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
366ed846
SP		 2252 kfree(utf16_path);
2253 if (!rc) {
2254 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
2255 fid.volatile_fid, pnntsd, acllen, aclflag);
2256 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2257 }
2258
2259 cifs_put_tlink(tlink);
2260 free_xid(xid);
2261 return rc;
2262}
2263#endif /* CIFS_ACL */
2264
2f1afe25
SP		 2265/* Retrieve an ACL from the server */
2266static struct cifs_ntsd *
2267get_smb2_acl(struct cifs_sb_info *cifs_sb,
2268 struct inode *inode, const char *path,
2269 u32 *pacllen)
2270{
2271 struct cifs_ntsd *pntsd = NULL;
2272 struct cifsFileInfo *open_file = NULL;
2273
2274 if (inode)
2275 open_file = find_readable_file(CIFS_I(inode), true);
2276 if (!open_file)
2277 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
2278
2279 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
2280 cifsFileInfo_put(open_file);
2281 return pntsd;
2282}
84908426 2283#endif
2f1afe25 2284
30175628
SF		 2285static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
2286 loff_t offset, loff_t len, bool keep_size)
2287{
2288 struct inode *inode;
2289 struct cifsInodeInfo *cifsi;
2290 struct cifsFileInfo *cfile = file->private_data;
2291 struct file_zero_data_information fsctl_buf;
2292 long rc;
2293 unsigned int xid;
2294
2295 xid = get_xid();
2296
2b0143b5 2297 inode = d_inode(cfile->dentry);
30175628
SF		 2298 cifsi = CIFS_I(inode);
2299
2300 /* if file not oplocked can't be sure whether asking to extend size */
2301 if (!CIFS_CACHE_READ(cifsi))
cfe89091
SF		 2302 if (keep_size == false) {
2303 rc = -EOPNOTSUPP;
2304 free_xid(xid);
2305 return rc;
2306 }
30175628 2307
2bb93d24 2308 /*
30175628
SF		 2309 * Must check if file sparse since fallocate -z (zero range) assumes
2310 * non-sparse allocation
2311 */
cfe89091
SF		 2312 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
2313 rc = -EOPNOTSUPP;
2314 free_xid(xid);
2315 return rc;
2316 }
30175628
SF		 2317
2318 /*
2319 * need to make sure we are not asked to extend the file since the SMB3
2320 * fsctl does not change the file size. In the future we could change
2321 * this to zero the first part of the range then set the file size
2322 * which for a non sparse file would zero the newly extended range
2323 */
2324 if (keep_size == false)
cfe89091
SF		 2325 if (i_size_read(inode) < offset + len) {
2326 rc = -EOPNOTSUPP;
2327 free_xid(xid);
2328 return rc;
2329 }
30175628
SF		 2330
2331 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
2332
2333 fsctl_buf.FileOffset = cpu_to_le64(offset);
2334 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
2335
2336 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2337 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
63a83b86 2338 true /* is_fctl */, (char *)&fsctl_buf,
30175628
SF		 2339 sizeof(struct file_zero_data_information), NULL, NULL);
2340 free_xid(xid);
2341 return rc;
2342}
2343
31742c5a
SF		 2344static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
2345 loff_t offset, loff_t len)
2346{
2347 struct inode *inode;
2348 struct cifsInodeInfo *cifsi;
2349 struct cifsFileInfo *cfile = file->private_data;
2350 struct file_zero_data_information fsctl_buf;
2351 long rc;
2352 unsigned int xid;
2353 __u8 set_sparse = 1;
2354
2355 xid = get_xid();
2356
2b0143b5 2357 inode = d_inode(cfile->dentry);
31742c5a
SF		 2358 cifsi = CIFS_I(inode);
2359
2360 /* Need to make file sparse, if not already, before freeing range. */
2361 /* Consider adding equivalent for compressed since it could also work */
cfe89091
SF		 2362 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
2363 rc = -EOPNOTSUPP;
2364 free_xid(xid);
2365 return rc;
2366 }
31742c5a
SF		 2367
2368 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
2369
2370 fsctl_buf.FileOffset = cpu_to_le64(offset);
2371 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
2372
2373 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2374 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
63a83b86 2375 true /* is_fctl */, (char *)&fsctl_buf,
31742c5a
SF		 2376 sizeof(struct file_zero_data_information), NULL, NULL);
2377 free_xid(xid);
2378 return rc;
2379}
2380
9ccf3216
SF		 2381static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
2382 loff_t off, loff_t len, bool keep_size)
2383{
2384 struct inode *inode;
2385 struct cifsInodeInfo *cifsi;
2386 struct cifsFileInfo *cfile = file->private_data;
2387 long rc = -EOPNOTSUPP;
2388 unsigned int xid;
2389
2390 xid = get_xid();
2391
2b0143b5 2392 inode = d_inode(cfile->dentry);
9ccf3216
SF		 2393 cifsi = CIFS_I(inode);
2394
2395 /* if file not oplocked can't be sure whether asking to extend size */
2396 if (!CIFS_CACHE_READ(cifsi))
cfe89091
SF		 2397 if (keep_size == false) {
2398 free_xid(xid);
2399 return rc;
2400 }
9ccf3216
SF		 2401
2402 /*
2403 * Files are non-sparse by default so falloc may be a no-op
2404 * Must check if file sparse. If not sparse, and not extending
2405 * then no need to do anything since file already allocated
2406 */
2407 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
2408 if (keep_size == true)
cfe89091 2409 rc = 0;
9ccf3216
SF		 2410 /* check if extending file */
2411 else if (i_size_read(inode) >= off + len)
2412 /* not extending file and already not sparse */
cfe89091 2413 rc = 0;
9ccf3216
SF		 2414 /* BB: in future add else clause to extend file */
2415 else
cfe89091
SF		 2416 rc = -EOPNOTSUPP;
2417 free_xid(xid);
2418 return rc;
9ccf3216
SF		 2419 }
2420
2421 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
2422 /*
2423 * Check if falloc starts within first few pages of file
2424 * and ends within a few pages of the end of file to
2425 * ensure that most of file is being forced to be
2426 * fallocated now. If so then setting whole file sparse
2427 * ie potentially making a few extra pages at the beginning
2428 * or end of the file non-sparse via set_sparse is harmless.
2429 */
cfe89091
SF		 2430 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
2431 rc = -EOPNOTSUPP;
2432 free_xid(xid);
2433 return rc;
2434 }
9ccf3216
SF		 2435
2436 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
2437 }
2438 /* BB: else ... in future add code to extend file and set sparse */
2439
2440
2441 free_xid(xid);
2442 return rc;
2443}
2444
2445
31742c5a
SF		 2446static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
2447 loff_t off, loff_t len)
2448{
2449 /* KEEP_SIZE already checked for by do_fallocate */
2450 if (mode & FALLOC_FL_PUNCH_HOLE)
2451 return smb3_punch_hole(file, tcon, off, len);
30175628
SF		 2452 else if (mode & FALLOC_FL_ZERO_RANGE) {
2453 if (mode & FALLOC_FL_KEEP_SIZE)
2454 return smb3_zero_range(file, tcon, off, len, true);
2455 return smb3_zero_range(file, tcon, off, len, false);
9ccf3216
SF		 2456 } else if (mode == FALLOC_FL_KEEP_SIZE)
2457 return smb3_simple_falloc(file, tcon, off, len, true);
2458 else if (mode == 0)
2459 return smb3_simple_falloc(file, tcon, off, len, false);
31742c5a
SF		 2460
2461 return -EOPNOTSUPP;
2462}
2463
c11f1df5
SP		 2464static void
2465smb2_downgrade_oplock(struct TCP_Server_Info *server,
2466 struct cifsInodeInfo *cinode, bool set_level2)
2467{
2468 if (set_level2)
2469 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
2470 0, NULL);
2471 else
2472 server->ops->set_oplock_level(cinode, 0, 0, NULL);
2473}
2474
53ef1016 2475static void
42873b0a
PS		 2476smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2477 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 2478{
2479 oplock &= 0xFF;
2480 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2481 return;
2482 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
42873b0a 2483 cinode->oplock = CIFS_CACHE_RHW_FLG;
53ef1016
PS		 2484 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
2485 &cinode->vfs_inode);
2486 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
42873b0a 2487 cinode->oplock = CIFS_CACHE_RW_FLG;
53ef1016
PS		 2488 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
2489 &cinode->vfs_inode);
2490 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
2491 cinode->oplock = CIFS_CACHE_READ_FLG;
2492 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
2493 &cinode->vfs_inode);
2494 } else
2495 cinode->oplock = 0;
2496}
2497
2498static void
42873b0a
PS		 2499smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2500 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 2501{
2502 char message[5] = {0};
2503
2504 oplock &= 0xFF;
2505 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2506 return;
2507
2508 cinode->oplock = 0;
2509 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
2510 cinode->oplock |= CIFS_CACHE_READ_FLG;
2511 strcat(message, "R");
2512 }
2513 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
2514 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
2515 strcat(message, "H");
2516 }
2517 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
2518 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
2519 strcat(message, "W");
2520 }
2521 if (!cinode->oplock)
2522 strcat(message, "None");
2523 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
2524 &cinode->vfs_inode);
2525}
2526
42873b0a
PS		 2527static void
2528smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2529 unsigned int epoch, bool *purge_cache)
2530{
2531 unsigned int old_oplock = cinode->oplock;
2532
2533 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
2534
2535 if (purge_cache) {
2536 *purge_cache = false;
2537 if (old_oplock == CIFS_CACHE_READ_FLG) {
2538 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
2539 (epoch - cinode->epoch > 0))
2540 *purge_cache = true;
2541 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2542 (epoch - cinode->epoch > 1))
2543 *purge_cache = true;
2544 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2545 (epoch - cinode->epoch > 1))
2546 *purge_cache = true;
2547 else if (cinode->oplock == 0 &&
2548 (epoch - cinode->epoch > 0))
2549 *purge_cache = true;
2550 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
2551 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2552 (epoch - cinode->epoch > 0))
2553 *purge_cache = true;
2554 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2555 (epoch - cinode->epoch > 1))
2556 *purge_cache = true;
2557 }
2558 cinode->epoch = epoch;
2559 }
2560}
2561
53ef1016
PS		 2562static bool
2563smb2_is_read_op(__u32 oplock)
2564{
2565 return oplock == SMB2_OPLOCK_LEVEL_II;
2566}
2567
2568static bool
2569smb21_is_read_op(__u32 oplock)
2570{
2571 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
2572 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
2573}
2574
f047390a
PS		 2575static __le32
2576map_oplock_to_lease(u8 oplock)
2577{
2578 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
2579 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
2580 else if (oplock == SMB2_OPLOCK_LEVEL_II)
2581 return SMB2_LEASE_READ_CACHING;
2582 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
2583 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
2584 SMB2_LEASE_WRITE_CACHING;
2585 return 0;
2586}
2587
a41a28bd
PS		 2588static char *
2589smb2_create_lease_buf(u8 *lease_key, u8 oplock)
2590{
2591 struct create_lease *buf;
2592
2593 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
2594 if (!buf)
2595 return NULL;
2596
729c0c9d 2597 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
f047390a 2598 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
a41a28bd
PS		 2599
2600 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2601 (struct create_lease, lcontext));
2602 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
2603 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2604 (struct create_lease, Name));
2605 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 2606 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
a41a28bd
PS		 2607 buf->Name[0] = 'R';
2608 buf->Name[1] = 'q';
2609 buf->Name[2] = 'L';
2610 buf->Name[3] = 's';
2611 return (char *)buf;
2612}
2613
f047390a
PS		 2614static char *
2615smb3_create_lease_buf(u8 *lease_key, u8 oplock)
2616{
2617 struct create_lease_v2 *buf;
2618
2619 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
2620 if (!buf)
2621 return NULL;
2622
729c0c9d 2623 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
f047390a
PS		 2624 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2625
2626 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2627 (struct create_lease_v2, lcontext));
2628 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
2629 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2630 (struct create_lease_v2, Name));
2631 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 2632 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
f047390a
PS		 2633 buf->Name[0] = 'R';
2634 buf->Name[1] = 'q';
2635 buf->Name[2] = 'L';
2636 buf->Name[3] = 's';
2637 return (char *)buf;
2638}
2639
b5c7cde3 2640static __u8
96164ab2 2641smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
b5c7cde3
PS		 2642{
2643 struct create_lease *lc = (struct create_lease *)buf;
2644
42873b0a 2645 *epoch = 0; /* not used */
b5c7cde3
PS		 2646 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2647 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2648 return le32_to_cpu(lc->lcontext.LeaseState);
2649}
2650
f047390a 2651static __u8
96164ab2 2652smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
f047390a
PS		 2653{
2654 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
2655
42873b0a 2656 *epoch = le16_to_cpu(lc->lcontext.Epoch);
f047390a
PS		 2657 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2658 return SMB2_OPLOCK_LEVEL_NOCHANGE;
96164ab2 2659 if (lease_key)
729c0c9d 2660 memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
f047390a
PS		 2661 return le32_to_cpu(lc->lcontext.LeaseState);
2662}
2663
7f6c5008
PS		 2664static unsigned int
2665smb2_wp_retry_size(struct inode *inode)
2666{
2667 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
2668 SMB2_MAX_BUFFER_SIZE);
2669}
2670
52755808
PS		 2671static bool
2672smb2_dir_needs_close(struct cifsFileInfo *cfile)
2673{
2674 return !cfile->invalidHandle;
2675}
2676
026e93dc 2677static void
977b6170
RS		 2678fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
2679 struct smb_rqst *old_rq)
026e93dc
PS		 2680{
2681 struct smb2_sync_hdr *shdr =
c713c877 2682 (struct smb2_sync_hdr *)old_rq->rq_iov[0].iov_base;
026e93dc
PS		 2683
2684 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
2685 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
2686 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
2687 tr_hdr->Flags = cpu_to_le16(0x01);
2688 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2689 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
026e93dc
PS		 2690}
2691
262916bc
RS		 2692/* We can not use the normal sg_set_buf() as we will sometimes pass a
2693 * stack object as buf.
2694 */
2695static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
2696 unsigned int buflen)
2697{
2698 sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
2699}
2700
b2c96de7
RS		 2701/* Assumes the first rqst has a transform header as the first iov.
2702 * I.e.
2703 * rqst[0].rq_iov[0] is transform header
2704 * rqst[0].rq_iov[1+] data to be encrypted/decrypted
2705 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
977b6170 2706 */
026e93dc 2707static struct scatterlist *
b2c96de7 2708init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign)
026e93dc 2709{
b2c96de7 2710 unsigned int sg_len;
026e93dc
PS		 2711 struct scatterlist *sg;
2712 unsigned int i;
2713 unsigned int j;
b2c96de7
RS		 2714 unsigned int idx = 0;
2715 int skip;
2716
2717 sg_len = 1;
2718 for (i = 0; i < num_rqst; i++)
2719 sg_len += rqst[i].rq_nvec + rqst[i].rq_npages;
026e93dc
PS		 2720
2721 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
2722 if (!sg)
2723 return NULL;
2724
2725 sg_init_table(sg, sg_len);
b2c96de7
RS		 2726 for (i = 0; i < num_rqst; i++) {
2727 for (j = 0; j < rqst[i].rq_nvec; j++) {
2728 /*
2729 * The first rqst has a transform header where the
2730 * first 20 bytes are not part of the encrypted blob
2731 */
2732 skip = (i == 0) && (j == 0) ? 20 : 0;
2733 smb2_sg_set_buf(&sg[idx++],
2734 rqst[i].rq_iov[j].iov_base + skip,
2735 rqst[i].rq_iov[j].iov_len - skip);
2736 }
2737
2738 for (j = 0; j < rqst[i].rq_npages; j++) {
2739 unsigned int len, offset;
d5f07fb3 2740
b2c96de7
RS		 2741 rqst_page_get_length(&rqst[i], j, &len, &offset);
2742 sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset);
2743 }
026e93dc 2744 }
b2c96de7 2745 smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE);
026e93dc
PS		 2746 return sg;
2747}
2748
61cfac6f
PS		 2749static int
2750smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
2751{
2752 struct cifs_ses *ses;
2753 u8 *ses_enc_key;
2754
2755 spin_lock(&cifs_tcp_ses_lock);
2756 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
2757 if (ses->Suid != ses_id)
2758 continue;
2759 ses_enc_key = enc ? ses->smb3encryptionkey :
2760 ses->smb3decryptionkey;
2761 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
2762 spin_unlock(&cifs_tcp_ses_lock);
2763 return 0;
2764 }
2765 spin_unlock(&cifs_tcp_ses_lock);
2766
2767 return 1;
2768}
026e93dc 2769/*
c713c877
RS		 2770 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
2771 * iov[0] - transform header (associate data),
2772 * iov[1-N] - SMB2 header and pages - data to encrypt.
2773 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
026e93dc
PS		 2774 * untouched.
2775 */
2776static int
b2c96de7
RS		 2777crypt_message(struct TCP_Server_Info *server, int num_rqst,
2778 struct smb_rqst *rqst, int enc)
026e93dc
PS		 2779{
2780 struct smb2_transform_hdr *tr_hdr =
b2c96de7 2781 (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
1fc6ad2f 2782 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
026e93dc
PS		 2783 int rc = 0;
2784 struct scatterlist *sg;
2785 u8 sign[SMB2_SIGNATURE_SIZE] = {};
61cfac6f 2786 u8 key[SMB3_SIGN_KEY_SIZE];
026e93dc
PS		 2787 struct aead_request *req;
2788 char *iv;
2789 unsigned int iv_len;
a5186b85 2790 DECLARE_CRYPTO_WAIT(wait);
026e93dc
PS		 2791 struct crypto_aead *tfm;
2792 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2793
61cfac6f
PS		 2794 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
2795 if (rc) {
2796 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
2797 enc ? "en" : "de");
026e93dc
PS		 2798 return 0;
2799 }
2800
2801 rc = smb3_crypto_aead_allocate(server);
2802 if (rc) {
2803 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
2804 return rc;
2805 }
2806
2807 tfm = enc ? server->secmech.ccmaesencrypt :
2808 server->secmech.ccmaesdecrypt;
61cfac6f 2809 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
026e93dc
PS		 2810 if (rc) {
2811 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
2812 return rc;
2813 }
2814
2815 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
2816 if (rc) {
2817 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
2818 return rc;
2819 }
2820
2821 req = aead_request_alloc(tfm, GFP_KERNEL);
2822 if (!req) {
2823 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
2824 return -ENOMEM;
2825 }
2826
2827 if (!enc) {
2828 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
2829 crypt_len += SMB2_SIGNATURE_SIZE;
2830 }
2831
b2c96de7 2832 sg = init_sg(num_rqst, rqst, sign);
026e93dc 2833 if (!sg) {
517a6e43
CJ		 2834 cifs_dbg(VFS, "%s: Failed to init sg", __func__);
2835 rc = -ENOMEM;
026e93dc
PS		 2836 goto free_req;
2837 }
2838
2839 iv_len = crypto_aead_ivsize(tfm);
2840 iv = kzalloc(iv_len, GFP_KERNEL);
2841 if (!iv) {
2842 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
517a6e43 2843 rc = -ENOMEM;
026e93dc
PS		 2844 goto free_sg;
2845 }
2846 iv[0] = 3;
2847 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2848
2849 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
2850 aead_request_set_ad(req, assoc_data_len);
2851
2852 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
a5186b85 2853 crypto_req_done, &wait);
026e93dc 2854
a5186b85
GBY		 2855 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
2856 : crypto_aead_decrypt(req), &wait);
026e93dc
PS		 2857
2858 if (!rc && enc)
2859 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
2860
2861 kfree(iv);
2862free_sg:
2863 kfree(sg);
2864free_req:
2865 kfree(req);
2866 return rc;
2867}
2868
b2c96de7
RS		 2869void
2870smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
2871{
2872 int i, j;
2873
2874 for (i = 0; i < num_rqst; i++) {
2875 if (rqst[i].rq_pages) {
2876 for (j = rqst[i].rq_npages - 1; j >= 0; j--)
2877 put_page(rqst[i].rq_pages[j]);
2878 kfree(rqst[i].rq_pages);
2879 }
2880 }
2881}
2882
2883/*
2884 * This function will initialize new_rq and encrypt the content.
2885 * The first entry, new_rq[0], only contains a single iov which contains
2886 * a smb2_transform_hdr and is pre-allocated by the caller.
2887 * This function then populates new_rq[1+] with the content from olq_rq[0+].
2888 *
2889 * The end result is an array of smb_rqst structures where the first structure
2890 * only contains a single iov for the transform header which we then can pass
2891 * to crypt_message().
2892 *
2893 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
2894 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
2895 */
026e93dc 2896static int
b2c96de7
RS		 2897smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
2898 struct smb_rqst *new_rq, struct smb_rqst *old_rq)
026e93dc 2899{
026e93dc 2900 struct page **pages;
b2c96de7
RS		 2901 struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
2902 unsigned int npages;
2903 unsigned int orig_len = 0;
2904 int i, j;
026e93dc
PS		 2905 int rc = -ENOMEM;
2906
b2c96de7
RS		 2907 for (i = 1; i < num_rqst; i++) {
2908 npages = old_rq[i - 1].rq_npages;
2909 pages = kmalloc_array(npages, sizeof(struct page *),
2910 GFP_KERNEL);
2911 if (!pages)
2912 goto err_free;
2913
2914 new_rq[i].rq_pages = pages;
2915 new_rq[i].rq_npages = npages;
2916 new_rq[i].rq_offset = old_rq[i - 1].rq_offset;
2917 new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz;
2918 new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz;
2919 new_rq[i].rq_iov = old_rq[i - 1].rq_iov;
2920 new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec;
2921
2922 orig_len += smb_rqst_len(server, &old_rq[i - 1]);
2923
2924 for (j = 0; j < npages; j++) {
2925 pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2926 if (!pages[j])
2927 goto err_free;
2928 }
026e93dc 2929
b2c96de7
RS		 2930 /* copy pages form the old */
2931 for (j = 0; j < npages; j++) {
2932 char *dst, *src;
2933 unsigned int offset, len;
977b6170 2934
b2c96de7 2935 rqst_page_get_length(&new_rq[i], j, &len, &offset);
026e93dc 2936
b2c96de7
RS		 2937 dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset;
2938 src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset;
026e93dc 2939
b2c96de7
RS		 2940 memcpy(dst, src, len);
2941 kunmap(new_rq[i].rq_pages[j]);
2942 kunmap(old_rq[i - 1].rq_pages[j]);
2943 }
2944 }
35e2cc1b 2945
b2c96de7 2946 /* fill the 1st iov with a transform header */
977b6170 2947 fill_transform_hdr(tr_hdr, orig_len, old_rq);
d5f07fb3 2948
b2c96de7 2949 rc = crypt_message(server, num_rqst, new_rq, 1);
026e93dc
PS		 2950 cifs_dbg(FYI, "encrypt message returned %d", rc);
2951 if (rc)
b2c96de7 2952 goto err_free;
026e93dc
PS		 2953
2954 return rc;
2955
b2c96de7
RS		 2956err_free:
2957 smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
026e93dc
PS		 2958 return rc;
2959}
2960
4326ed2f
PS		 2961static int
2962smb3_is_transform_hdr(void *buf)
2963{
2964 struct smb2_transform_hdr *trhdr = buf;
2965
2966 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
2967}
2968
2969static int
2970decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
2971 unsigned int buf_data_size, struct page **pages,
2972 unsigned int npages, unsigned int page_data_size)
2973{
c713c877 2974 struct kvec iov[2];
4326ed2f 2975 struct smb_rqst rqst = {NULL};
4326ed2f
PS		 2976 int rc;
2977
c713c877
RS		 2978 iov[0].iov_base = buf;
2979 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
2980 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
2981 iov[1].iov_len = buf_data_size;
4326ed2f
PS		 2982
2983 rqst.rq_iov = iov;
c713c877 2984 rqst.rq_nvec = 2;
4326ed2f
PS		 2985 rqst.rq_pages = pages;
2986 rqst.rq_npages = npages;
2987 rqst.rq_pagesz = PAGE_SIZE;
2988 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
2989
b2c96de7 2990 rc = crypt_message(server, 1, &rqst, 0);
4326ed2f
PS		 2991 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
2992
2993 if (rc)
2994 return rc;
2995
c713c877 2996 memmove(buf, iov[1].iov_base, buf_data_size);
977b6170
RS		 2997
2998 server->total_read = buf_data_size + page_data_size;
4326ed2f
PS		 2999
3000 return rc;
3001}
3002
c42a6abe
PS		 3003static int
3004read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
3005 unsigned int npages, unsigned int len)
3006{
3007 int i;
3008 int length;
3009
3010 for (i = 0; i < npages; i++) {
3011 struct page *page = pages[i];
3012 size_t n;
3013
3014 n = len;
3015 if (len >= PAGE_SIZE) {
3016 /* enough data to fill the page */
3017 n = PAGE_SIZE;
3018 len -= n;
3019 } else {
3020 zero_user(page, len, PAGE_SIZE - len);
3021 len = 0;
3022 }
1dbe3466 3023 length = cifs_read_page_from_socket(server, page, 0, n);
c42a6abe
PS		 3024 if (length < 0)
3025 return length;
3026 server->total_read += length;
3027 }
3028
3029 return 0;
3030}
3031
3032static int
3033init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
3034 unsigned int cur_off, struct bio_vec **page_vec)
3035{
3036 struct bio_vec *bvec;
3037 int i;
3038
3039 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
3040 if (!bvec)
3041 return -ENOMEM;
3042
3043 for (i = 0; i < npages; i++) {
3044 bvec[i].bv_page = pages[i];
3045 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
3046 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
3047 data_size -= bvec[i].bv_len;
3048 }
3049
3050 if (data_size != 0) {
3051 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
3052 kfree(bvec);
3053 return -EIO;
3054 }
3055
3056 *page_vec = bvec;
3057 return 0;
3058}
3059
4326ed2f
PS		 3060static int
3061handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
3062 char *buf, unsigned int buf_len, struct page **pages,
3063 unsigned int npages, unsigned int page_data_size)
3064{
3065 unsigned int data_offset;
3066 unsigned int data_len;
c42a6abe
PS		 3067 unsigned int cur_off;
3068 unsigned int cur_page_idx;
3069 unsigned int pad_len;
4326ed2f 3070 struct cifs_readdata *rdata = mid->callback_data;
49f466bd 3071 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
4326ed2f
PS		 3072 struct bio_vec *bvec = NULL;
3073 struct iov_iter iter;
3074 struct kvec iov;
3075 int length;
74dcf418 3076 bool use_rdma_mr = false;
4326ed2f
PS		 3077
3078 if (shdr->Command != SMB2_READ) {
3079 cifs_dbg(VFS, "only big read responses are supported\n");
3080 return -ENOTSUPP;
3081 }
3082
511c54a2
PS		 3083 if (server->ops->is_session_expired &&
3084 server->ops->is_session_expired(buf)) {
3085 cifs_reconnect(server);
3086 wake_up(&server->response_q);
3087 return -1;
3088 }
3089
4326ed2f
PS		 3090 if (server->ops->is_status_pending &&
3091 server->ops->is_status_pending(buf, server, 0))
3092 return -1;
3093
3094 rdata->result = server->ops->map_error(buf, false);
3095 if (rdata->result != 0) {
3096 cifs_dbg(FYI, "%s: server returned error %d\n",
3097 __func__, rdata->result);
3098 dequeue_mid(mid, rdata->result);
3099 return 0;
3100 }
3101
1fc6ad2f 3102 data_offset = server->ops->read_data_offset(buf);
74dcf418
LL		 3103#ifdef CONFIG_CIFS_SMB_DIRECT
3104 use_rdma_mr = rdata->mr;
3105#endif
3106 data_len = server->ops->read_data_length(buf, use_rdma_mr);
4326ed2f
PS		 3107
3108 if (data_offset < server->vals->read_rsp_size) {
3109 /*
3110 * win2k8 sometimes sends an offset of 0 when the read
3111 * is beyond the EOF. Treat it as if the data starts just after
3112 * the header.
3113 */
3114 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
3115 __func__, data_offset);
3116 data_offset = server->vals->read_rsp_size;
3117 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
3118 /* data_offset is beyond the end of smallbuf */
3119 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
3120 __func__, data_offset);
3121 rdata->result = -EIO;
3122 dequeue_mid(mid, rdata->result);
3123 return 0;
3124 }
3125
c42a6abe
PS		 3126 pad_len = data_offset - server->vals->read_rsp_size;
3127
4326ed2f
PS		 3128 if (buf_len <= data_offset) {
3129 /* read response payload is in pages */
c42a6abe
PS		 3130 cur_page_idx = pad_len / PAGE_SIZE;
3131 cur_off = pad_len % PAGE_SIZE;
3132
3133 if (cur_page_idx != 0) {
3134 /* data offset is beyond the 1st page of response */
3135 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
3136 __func__, data_offset);
3137 rdata->result = -EIO;
3138 dequeue_mid(mid, rdata->result);
3139 return 0;
3140 }
3141
3142 if (data_len > page_data_size - pad_len) {
3143 /* data_len is corrupt -- discard frame */
3144 rdata->result = -EIO;
3145 dequeue_mid(mid, rdata->result);
3146 return 0;
3147 }
3148
3149 rdata->result = init_read_bvec(pages, npages, page_data_size,
3150 cur_off, &bvec);
3151 if (rdata->result != 0) {
3152 dequeue_mid(mid, rdata->result);
3153 return 0;
3154 }
3155
aa563d7b 3156 iov_iter_bvec(&iter, WRITE, bvec, npages, data_len);
4326ed2f
PS		 3157 } else if (buf_len >= data_offset + data_len) {
3158 /* read response payload is in buf */
3159 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
3160 iov.iov_base = buf + data_offset;
3161 iov.iov_len = data_len;
aa563d7b 3162 iov_iter_kvec(&iter, WRITE, &iov, 1, data_len);
4326ed2f
PS		 3163 } else {
3164 /* read response payload cannot be in both buf and pages */
3165 WARN_ONCE(1, "buf can not contain only a part of read data");
3166 rdata->result = -EIO;
3167 dequeue_mid(mid, rdata->result);
3168 return 0;
3169 }
3170
3171 /* set up first iov for signature check */
3172 rdata->iov[0].iov_base = buf;
3173 rdata->iov[0].iov_len = 4;
3174 rdata->iov[1].iov_base = buf + 4;
3175 rdata->iov[1].iov_len = server->vals->read_rsp_size - 4;
3176 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
3177 rdata->iov[0].iov_base, server->vals->read_rsp_size);
3178
3179 length = rdata->copy_into_pages(server, rdata, &iter);
3180
3181 kfree(bvec);
3182
3183 if (length < 0)
3184 return length;
3185
3186 dequeue_mid(mid, false);
3187 return length;
3188}
3189
c42a6abe
PS		 3190static int
3191receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
3192{
3193 char *buf = server->smallbuf;
3194 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
3195 unsigned int npages;
3196 struct page **pages;
3197 unsigned int len;
1fc6ad2f 3198 unsigned int buflen = server->pdu_size;
c42a6abe
PS		 3199 int rc;
3200 int i = 0;
3201
1fc6ad2f 3202 len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
c42a6abe
PS		 3203 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
3204
3205 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
3206 if (rc < 0)
3207 return rc;
3208 server->total_read += rc;
3209
1fc6ad2f 3210 len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
93012bf9 3211 server->vals->read_rsp_size;
c42a6abe
PS		 3212 npages = DIV_ROUND_UP(len, PAGE_SIZE);
3213
3214 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
3215 if (!pages) {
3216 rc = -ENOMEM;
3217 goto discard_data;
3218 }
3219
3220 for (; i < npages; i++) {
3221 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
3222 if (!pages[i]) {
3223 rc = -ENOMEM;
3224 goto discard_data;
3225 }
3226 }
3227
3228 /* read read data into pages */
3229 rc = read_data_into_pages(server, pages, npages, len);
3230 if (rc)
3231 goto free_pages;
3232
350be257 3233 rc = cifs_discard_remaining_data(server);
c42a6abe
PS		 3234 if (rc)
3235 goto free_pages;
3236
1fc6ad2f 3237 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
c42a6abe
PS		 3238 pages, npages, len);
3239 if (rc)
3240 goto free_pages;
3241
3242 *mid = smb2_find_mid(server, buf);
3243 if (*mid == NULL)
3244 cifs_dbg(FYI, "mid not found\n");
3245 else {
3246 cifs_dbg(FYI, "mid found\n");
3247 (*mid)->decrypted = true;
3248 rc = handle_read_data(server, *mid, buf,
3249 server->vals->read_rsp_size,
3250 pages, npages, len);
3251 }
3252
3253free_pages:
3254 for (i = i - 1; i >= 0; i--)
3255 put_page(pages[i]);
3256 kfree(pages);
3257 return rc;
3258discard_data:
350be257 3259 cifs_discard_remaining_data(server);
c42a6abe
PS		 3260 goto free_pages;
3261}
3262
4326ed2f
PS		 3263static int
3264receive_encrypted_standard(struct TCP_Server_Info *server,
b24df3e3
RS		 3265 struct mid_q_entry **mids, char **bufs,
3266 int *num_mids)
4326ed2f 3267{
b24df3e3 3268 int ret, length;
4326ed2f 3269 char *buf = server->smallbuf;
b24df3e3
RS		 3270 char *tmpbuf;
3271 struct smb2_sync_hdr *shdr;
2e96467d 3272 unsigned int pdu_length = server->pdu_size;
4326ed2f
PS		 3273 unsigned int buf_size;
3274 struct mid_q_entry *mid_entry;
b24df3e3
RS		 3275 int next_is_large;
3276 char *next_buffer = NULL;
3277
3278 *num_mids = 0;
4326ed2f
PS		 3279
3280 /* switch to large buffer if too big for a small one */
1fc6ad2f 3281 if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
4326ed2f
PS		 3282 server->large_buf = true;
3283 memcpy(server->bigbuf, buf, server->total_read);
3284 buf = server->bigbuf;
3285 }
3286
3287 /* now read the rest */
3288 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
1fc6ad2f 3289 pdu_length - HEADER_SIZE(server) + 1);
4326ed2f
PS		 3290 if (length < 0)
3291 return length;
3292 server->total_read += length;
3293
1fc6ad2f 3294 buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
4326ed2f
PS		 3295 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
3296 if (length)
3297 return length;
3298
b24df3e3
RS		 3299 next_is_large = server->large_buf;
3300 one_more:
3301 shdr = (struct smb2_sync_hdr *)buf;
3302 if (shdr->NextCommand) {
3303 if (next_is_large) {
3304 tmpbuf = server->bigbuf;
3305 next_buffer = (char *)cifs_buf_get();
3306 } else {
3307 tmpbuf = server->smallbuf;
3308 next_buffer = (char *)cifs_small_buf_get();
3309 }
3310 memcpy(next_buffer,
3311 tmpbuf + le32_to_cpu(shdr->NextCommand),
3312 pdu_length - le32_to_cpu(shdr->NextCommand));
3313 }
3314
4326ed2f
PS		 3315 mid_entry = smb2_find_mid(server, buf);
3316 if (mid_entry == NULL)
3317 cifs_dbg(FYI, "mid not found\n");
3318 else {
3319 cifs_dbg(FYI, "mid found\n");
3320 mid_entry->decrypted = true;
b24df3e3 3321 mid_entry->resp_buf_size = server->pdu_size;
4326ed2f
PS		 3322 }
3323
b24df3e3
RS		 3324 if (*num_mids >= MAX_COMPOUND) {
3325 cifs_dbg(VFS, "too many PDUs in compound\n");
3326 return -1;
3327 }
3328 bufs[*num_mids] = buf;
3329 mids[(*num_mids)++] = mid_entry;
4326ed2f
PS		 3330
3331 if (mid_entry && mid_entry->handle)
b24df3e3
RS		 3332 ret = mid_entry->handle(server, mid_entry);
3333 else
3334 ret = cifs_handle_standard(server, mid_entry);
3335
3336 if (ret == 0 && shdr->NextCommand) {
3337 pdu_length -= le32_to_cpu(shdr->NextCommand);
3338 server->large_buf = next_is_large;
3339 if (next_is_large)
3340 server->bigbuf = next_buffer;
3341 else
3342 server->smallbuf = next_buffer;
3343
3344 buf += le32_to_cpu(shdr->NextCommand);
3345 goto one_more;
3346 }
4326ed2f 3347
b24df3e3 3348 return ret;
4326ed2f
PS		 3349}
3350
3351static int
b24df3e3
RS		 3352smb3_receive_transform(struct TCP_Server_Info *server,
3353 struct mid_q_entry **mids, char **bufs, int *num_mids)
4326ed2f
PS		 3354{
3355 char *buf = server->smallbuf;
2e96467d 3356 unsigned int pdu_length = server->pdu_size;
4326ed2f
PS		 3357 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
3358 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
3359
1fc6ad2f 3360 if (pdu_length < sizeof(struct smb2_transform_hdr) +
4326ed2f
PS		 3361 sizeof(struct smb2_sync_hdr)) {
3362 cifs_dbg(VFS, "Transform message is too small (%u)\n",
3363 pdu_length);
3364 cifs_reconnect(server);
3365 wake_up(&server->response_q);
3366 return -ECONNABORTED;
3367 }
3368
1fc6ad2f 3369 if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
4326ed2f
PS		 3370 cifs_dbg(VFS, "Transform message is broken\n");
3371 cifs_reconnect(server);
3372 wake_up(&server->response_q);
3373 return -ECONNABORTED;
3374 }
3375
b24df3e3 3376 /* TODO: add support for compounds containing READ. */
1fc6ad2f 3377 if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server))
b24df3e3 3378 return receive_encrypted_read(server, &mids[0]);
4326ed2f 3379
b24df3e3 3380 return receive_encrypted_standard(server, mids, bufs, num_mids);
4326ed2f
PS		 3381}
3382
3383int
3384smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
3385{
3386 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
3387
1fc6ad2f 3388 return handle_read_data(server, mid, buf, server->pdu_size,
4326ed2f
PS		 3389 NULL, 0, 0);
3390}
3391
8ce79ec3
RS		 3392static int
3393smb2_next_header(char *buf)
3394{
3395 struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf;
3396 struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
3397
3398 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM)
3399 return sizeof(struct smb2_transform_hdr) +
3400 le32_to_cpu(t_hdr->OriginalMessageSize);
3401
3402 return le32_to_cpu(hdr->NextCommand);
3403}
3404
53ef1016 3405struct smb_version_operations smb20_operations = {
027e8eec 3406 .compare_fids = smb2_compare_fids,
2dc7e1c0 3407 .setup_request = smb2_setup_request,
c95b8eed 3408 .setup_async_request = smb2_setup_async_request,
2dc7e1c0 3409 .check_receive = smb2_check_receive,
28ea5290
PS		 3410 .add_credits = smb2_add_credits,
3411 .set_credits = smb2_set_credits,
3412 .get_credits_field = smb2_get_credits_field,
3413 .get_credits = smb2_get_credits,
cb7e9eab 3414 .wait_mtu_credits = cifs_wait_mtu_credits,
2dc7e1c0 3415 .get_next_mid = smb2_get_next_mid,
09a4707e
PS		 3416 .read_data_offset = smb2_read_data_offset,
3417 .read_data_length = smb2_read_data_length,
3418 .map_error = map_smb2_to_linux_error,
093b2bda
PS		 3419 .find_mid = smb2_find_mid,
3420 .check_message = smb2_check_message,
3421 .dump_detail = smb2_dump_detail,
d60622eb
PS		 3422 .clear_stats = smb2_clear_stats,
3423 .print_stats = smb2_print_stats,
983c88a4 3424 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3425 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 3426 .downgrade_oplock = smb2_downgrade_oplock,
ec2e4523
PS		 3427 .need_neg = smb2_need_neg,
3428 .negotiate = smb2_negotiate,
3a3bab50
PS		 3429 .negotiate_wsize = smb2_negotiate_wsize,
3430 .negotiate_rsize = smb2_negotiate_rsize,
5478f9ba
PS		 3431 .sess_setup = SMB2_sess_setup,
3432 .logoff = SMB2_logoff,
faaf946a
PS		 3433 .tree_connect = SMB2_tcon,
3434 .tree_disconnect = SMB2_tdis,
34f62640 3435 .qfs_tcon = smb2_qfs_tcon,
2503a0db 3436 .is_path_accessible = smb2_is_path_accessible,
9094fad1
PS		 3437 .can_echo = smb2_can_echo,
3438 .echo = SMB2_echo,
be4cb9e3
PS		 3439 .query_path_info = smb2_query_path_info,
3440 .get_srv_inum = smb2_get_srv_inum,
b7546bc5 3441 .query_file_info = smb2_query_file_info,
c839ff24
PS		 3442 .set_path_size = smb2_set_path_size,
3443 .set_file_size = smb2_set_file_size,
1feeaac7 3444 .set_file_info = smb2_set_file_info,
64a5cfa6 3445 .set_compression = smb2_set_compression,
a0e73183
PS		 3446 .mkdir = smb2_mkdir,
3447 .mkdir_setinfo = smb2_mkdir_setinfo,
1a500f01 3448 .rmdir = smb2_rmdir,
cbe6f439 3449 .unlink = smb2_unlink,
35143eb5 3450 .rename = smb2_rename_path,
568798cc 3451 .create_hardlink = smb2_create_hardlink,
b42bf888 3452 .query_symlink = smb2_query_symlink,
5b23c97d
SP		 3453 .query_mf_symlink = smb3_query_mf_symlink,
3454 .create_mf_symlink = smb3_create_mf_symlink,
f0df737e
PS		 3455 .open = smb2_open_file,
3456 .set_fid = smb2_set_fid,
3457 .close = smb2_close_file,
7a5cfb19 3458 .flush = smb2_flush_file,
09a4707e 3459 .async_readv = smb2_async_readv,
33319141 3460 .async_writev = smb2_async_writev,
d8e05039 3461 .sync_read = smb2_sync_read,
009d3443 3462 .sync_write = smb2_sync_write,
d324f08d
PS		 3463 .query_dir_first = smb2_query_dir_first,
3464 .query_dir_next = smb2_query_dir_next,
3465 .close_dir = smb2_close_dir,
3466 .calc_smb_size = smb2_calc_size,
2e44b288 3467 .is_status_pending = smb2_is_status_pending,
511c54a2 3468 .is_session_expired = smb2_is_session_expired,
983c88a4 3469 .oplock_response = smb2_oplock_response,
6fc05c25 3470 .queryfs = smb2_queryfs,
f7ba7fe6
PS		 3471 .mand_lock = smb2_mand_lock,
3472 .mand_unlock_range = smb2_unlock_range,
b140799a 3473 .push_mand_locks = smb2_push_mandatory_locks,
b8c32dbb
PS		 3474 .get_lease_key = smb2_get_lease_key,
3475 .set_lease_key = smb2_set_lease_key,
3476 .new_lease_key = smb2_new_lease_key,
38107d45 3477 .calc_signature = smb2_calc_signature,
53ef1016
PS		 3478 .is_read_op = smb2_is_read_op,
3479 .set_oplock_level = smb2_set_oplock_level,
a41a28bd 3480 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 3481 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 3482 .copychunk_range = smb2_copychunk_range,
7f6c5008 3483 .wp_retry_size = smb2_wp_retry_size,
52755808 3484 .dir_needs_close = smb2_dir_needs_close,
9d49640a 3485 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3486 .select_sectype = smb2_select_sectype,
95907fea
RS		 3487#ifdef CONFIG_CIFS_XATTR
3488 .query_all_EAs = smb2_query_eas,
5517554e 3489 .set_EA = smb2_set_ea,
95907fea 3490#endif /* CIFS_XATTR */
2f1afe25
SP		 3491#ifdef CONFIG_CIFS_ACL
3492 .get_acl = get_smb2_acl,
3493 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 3494 .set_acl = set_smb2_acl,
2f1afe25 3495#endif /* CIFS_ACL */
8ce79ec3 3496 .next_header = smb2_next_header,
f5b05d62 3497 .ioctl_query_info = smb2_ioctl_query_info,
38107d45
SF		 3498};
3499
53ef1016
PS		 3500struct smb_version_operations smb21_operations = {
3501 .compare_fids = smb2_compare_fids,
3502 .setup_request = smb2_setup_request,
3503 .setup_async_request = smb2_setup_async_request,
3504 .check_receive = smb2_check_receive,
3505 .add_credits = smb2_add_credits,
3506 .set_credits = smb2_set_credits,
3507 .get_credits_field = smb2_get_credits_field,
3508 .get_credits = smb2_get_credits,
cb7e9eab 3509 .wait_mtu_credits = smb2_wait_mtu_credits,
53ef1016
PS		 3510 .get_next_mid = smb2_get_next_mid,
3511 .read_data_offset = smb2_read_data_offset,
3512 .read_data_length = smb2_read_data_length,
3513 .map_error = map_smb2_to_linux_error,
3514 .find_mid = smb2_find_mid,
3515 .check_message = smb2_check_message,
3516 .dump_detail = smb2_dump_detail,
3517 .clear_stats = smb2_clear_stats,
3518 .print_stats = smb2_print_stats,
3519 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3520 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 3521 .downgrade_oplock = smb2_downgrade_oplock,
53ef1016
PS		 3522 .need_neg = smb2_need_neg,
3523 .negotiate = smb2_negotiate,
3524 .negotiate_wsize = smb2_negotiate_wsize,
3525 .negotiate_rsize = smb2_negotiate_rsize,
3526 .sess_setup = SMB2_sess_setup,
3527 .logoff = SMB2_logoff,
3528 .tree_connect = SMB2_tcon,
3529 .tree_disconnect = SMB2_tdis,
34f62640 3530 .qfs_tcon = smb2_qfs_tcon,
53ef1016
PS		 3531 .is_path_accessible = smb2_is_path_accessible,
3532 .can_echo = smb2_can_echo,
3533 .echo = SMB2_echo,
3534 .query_path_info = smb2_query_path_info,
3535 .get_srv_inum = smb2_get_srv_inum,
3536 .query_file_info = smb2_query_file_info,
3537 .set_path_size = smb2_set_path_size,
3538 .set_file_size = smb2_set_file_size,
3539 .set_file_info = smb2_set_file_info,
64a5cfa6 3540 .set_compression = smb2_set_compression,
53ef1016
PS		 3541 .mkdir = smb2_mkdir,
3542 .mkdir_setinfo = smb2_mkdir_setinfo,
3543 .rmdir = smb2_rmdir,
3544 .unlink = smb2_unlink,
3545 .rename = smb2_rename_path,
3546 .create_hardlink = smb2_create_hardlink,
3547 .query_symlink = smb2_query_symlink,
c22870ea 3548 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 3549 .create_mf_symlink = smb3_create_mf_symlink,
53ef1016
PS		 3550 .open = smb2_open_file,
3551 .set_fid = smb2_set_fid,
3552 .close = smb2_close_file,
3553 .flush = smb2_flush_file,
3554 .async_readv = smb2_async_readv,
3555 .async_writev = smb2_async_writev,
3556 .sync_read = smb2_sync_read,
3557 .sync_write = smb2_sync_write,
3558 .query_dir_first = smb2_query_dir_first,
3559 .query_dir_next = smb2_query_dir_next,
3560 .close_dir = smb2_close_dir,
3561 .calc_smb_size = smb2_calc_size,
3562 .is_status_pending = smb2_is_status_pending,
511c54a2 3563 .is_session_expired = smb2_is_session_expired,
53ef1016
PS		 3564 .oplock_response = smb2_oplock_response,
3565 .queryfs = smb2_queryfs,
3566 .mand_lock = smb2_mand_lock,
3567 .mand_unlock_range = smb2_unlock_range,
3568 .push_mand_locks = smb2_push_mandatory_locks,
3569 .get_lease_key = smb2_get_lease_key,
3570 .set_lease_key = smb2_set_lease_key,
3571 .new_lease_key = smb2_new_lease_key,
3572 .calc_signature = smb2_calc_signature,
3573 .is_read_op = smb21_is_read_op,
3574 .set_oplock_level = smb21_set_oplock_level,
a41a28bd 3575 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 3576 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 3577 .copychunk_range = smb2_copychunk_range,
7f6c5008 3578 .wp_retry_size = smb2_wp_retry_size,
52755808 3579 .dir_needs_close = smb2_dir_needs_close,
834170c8 3580 .enum_snapshots = smb3_enum_snapshots,
9d49640a 3581 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3582 .select_sectype = smb2_select_sectype,
95907fea
RS		 3583#ifdef CONFIG_CIFS_XATTR
3584 .query_all_EAs = smb2_query_eas,
5517554e 3585 .set_EA = smb2_set_ea,
95907fea 3586#endif /* CIFS_XATTR */
2f1afe25
SP		 3587#ifdef CONFIG_CIFS_ACL
3588 .get_acl = get_smb2_acl,
3589 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 3590 .set_acl = set_smb2_acl,
2f1afe25 3591#endif /* CIFS_ACL */
8ce79ec3 3592 .next_header = smb2_next_header,
f5b05d62 3593 .ioctl_query_info = smb2_ioctl_query_info,
53ef1016 3594};
38107d45
SF		 3595
3596struct smb_version_operations smb30_operations = {
3597 .compare_fids = smb2_compare_fids,
3598 .setup_request = smb2_setup_request,
3599 .setup_async_request = smb2_setup_async_request,
3600 .check_receive = smb2_check_receive,
3601 .add_credits = smb2_add_credits,
3602 .set_credits = smb2_set_credits,
3603 .get_credits_field = smb2_get_credits_field,
3604 .get_credits = smb2_get_credits,
cb7e9eab 3605 .wait_mtu_credits = smb2_wait_mtu_credits,
38107d45
SF		 3606 .get_next_mid = smb2_get_next_mid,
3607 .read_data_offset = smb2_read_data_offset,
3608 .read_data_length = smb2_read_data_length,
3609 .map_error = map_smb2_to_linux_error,
3610 .find_mid = smb2_find_mid,
3611 .check_message = smb2_check_message,
3612 .dump_detail = smb2_dump_detail,
3613 .clear_stats = smb2_clear_stats,
3614 .print_stats = smb2_print_stats,
769ee6a4 3615 .dump_share_caps = smb2_dump_share_caps,
38107d45 3616 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3617 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 3618 .downgrade_oplock = smb2_downgrade_oplock,
38107d45
SF		 3619 .need_neg = smb2_need_neg,
3620 .negotiate = smb2_negotiate,
3d621230
SF		 3621 .negotiate_wsize = smb3_negotiate_wsize,
3622 .negotiate_rsize = smb3_negotiate_rsize,
38107d45
SF		 3623 .sess_setup = SMB2_sess_setup,
3624 .logoff = SMB2_logoff,
3625 .tree_connect = SMB2_tcon,
3626 .tree_disconnect = SMB2_tdis,
af6a12ea 3627 .qfs_tcon = smb3_qfs_tcon,
38107d45
SF		 3628 .is_path_accessible = smb2_is_path_accessible,
3629 .can_echo = smb2_can_echo,
3630 .echo = SMB2_echo,
3631 .query_path_info = smb2_query_path_info,
3632 .get_srv_inum = smb2_get_srv_inum,
3633 .query_file_info = smb2_query_file_info,
3634 .set_path_size = smb2_set_path_size,
3635 .set_file_size = smb2_set_file_size,
3636 .set_file_info = smb2_set_file_info,
64a5cfa6 3637 .set_compression = smb2_set_compression,
38107d45
SF		 3638 .mkdir = smb2_mkdir,
3639 .mkdir_setinfo = smb2_mkdir_setinfo,
3640 .rmdir = smb2_rmdir,
3641 .unlink = smb2_unlink,
3642 .rename = smb2_rename_path,
3643 .create_hardlink = smb2_create_hardlink,
b42bf888 3644 .query_symlink = smb2_query_symlink,
c22870ea 3645 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 3646 .create_mf_symlink = smb3_create_mf_symlink,
38107d45
SF		 3647 .open = smb2_open_file,
3648 .set_fid = smb2_set_fid,
3649 .close = smb2_close_file,
3650 .flush = smb2_flush_file,
3651 .async_readv = smb2_async_readv,
3652 .async_writev = smb2_async_writev,
3653 .sync_read = smb2_sync_read,
3654 .sync_write = smb2_sync_write,
3655 .query_dir_first = smb2_query_dir_first,
3656 .query_dir_next = smb2_query_dir_next,
3657 .close_dir = smb2_close_dir,
3658 .calc_smb_size = smb2_calc_size,
3659 .is_status_pending = smb2_is_status_pending,
511c54a2 3660 .is_session_expired = smb2_is_session_expired,
38107d45
SF		 3661 .oplock_response = smb2_oplock_response,
3662 .queryfs = smb2_queryfs,
3663 .mand_lock = smb2_mand_lock,
3664 .mand_unlock_range = smb2_unlock_range,
3665 .push_mand_locks = smb2_push_mandatory_locks,
3666 .get_lease_key = smb2_get_lease_key,
3667 .set_lease_key = smb2_set_lease_key,
3668 .new_lease_key = smb2_new_lease_key,
373512ec 3669 .generate_signingkey = generate_smb30signingkey,
38107d45 3670 .calc_signature = smb3_calc_signature,
b3152e2c 3671 .set_integrity = smb3_set_integrity,
53ef1016 3672 .is_read_op = smb21_is_read_op,
42873b0a 3673 .set_oplock_level = smb3_set_oplock_level,
f047390a
PS		 3674 .create_lease_buf = smb3_create_lease_buf,
3675 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 3676 .copychunk_range = smb2_copychunk_range,
ca9e7a1c 3677 .duplicate_extents = smb2_duplicate_extents,
ff1c038a 3678 .validate_negotiate = smb3_validate_negotiate,
7f6c5008 3679 .wp_retry_size = smb2_wp_retry_size,
52755808 3680 .dir_needs_close = smb2_dir_needs_close,
31742c5a 3681 .fallocate = smb3_fallocate,
834170c8 3682 .enum_snapshots = smb3_enum_snapshots,
026e93dc 3683 .init_transform_rq = smb3_init_transform_rq,
4326ed2f
PS		 3684 .is_transform_hdr = smb3_is_transform_hdr,
3685 .receive_transform = smb3_receive_transform,
9d49640a 3686 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3687 .select_sectype = smb2_select_sectype,
95907fea
RS		 3688#ifdef CONFIG_CIFS_XATTR
3689 .query_all_EAs = smb2_query_eas,
5517554e 3690 .set_EA = smb2_set_ea,
95907fea 3691#endif /* CIFS_XATTR */
2f1afe25
SP		 3692#ifdef CONFIG_CIFS_ACL
3693 .get_acl = get_smb2_acl,
3694 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 3695 .set_acl = set_smb2_acl,
2f1afe25 3696#endif /* CIFS_ACL */
8ce79ec3 3697 .next_header = smb2_next_header,
f5b05d62 3698 .ioctl_query_info = smb2_ioctl_query_info,
1080ef75
SF		 3699};
3700
aab1893d
SF		 3701struct smb_version_operations smb311_operations = {
3702 .compare_fids = smb2_compare_fids,
3703 .setup_request = smb2_setup_request,
3704 .setup_async_request = smb2_setup_async_request,
3705 .check_receive = smb2_check_receive,
3706 .add_credits = smb2_add_credits,
3707 .set_credits = smb2_set_credits,
3708 .get_credits_field = smb2_get_credits_field,
3709 .get_credits = smb2_get_credits,
3710 .wait_mtu_credits = smb2_wait_mtu_credits,
3711 .get_next_mid = smb2_get_next_mid,
3712 .read_data_offset = smb2_read_data_offset,
3713 .read_data_length = smb2_read_data_length,
3714 .map_error = map_smb2_to_linux_error,
3715 .find_mid = smb2_find_mid,
3716 .check_message = smb2_check_message,
3717 .dump_detail = smb2_dump_detail,
3718 .clear_stats = smb2_clear_stats,
3719 .print_stats = smb2_print_stats,
3720 .dump_share_caps = smb2_dump_share_caps,
3721 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3722 .handle_cancelled_mid = smb2_handle_cancelled_mid,
aab1893d
SF		 3723 .downgrade_oplock = smb2_downgrade_oplock,
3724 .need_neg = smb2_need_neg,
3725 .negotiate = smb2_negotiate,
3d621230
SF		 3726 .negotiate_wsize = smb3_negotiate_wsize,
3727 .negotiate_rsize = smb3_negotiate_rsize,
aab1893d
SF		 3728 .sess_setup = SMB2_sess_setup,
3729 .logoff = SMB2_logoff,
3730 .tree_connect = SMB2_tcon,
3731 .tree_disconnect = SMB2_tdis,
3732 .qfs_tcon = smb3_qfs_tcon,
3733 .is_path_accessible = smb2_is_path_accessible,
3734 .can_echo = smb2_can_echo,
3735 .echo = SMB2_echo,
3736 .query_path_info = smb2_query_path_info,
3737 .get_srv_inum = smb2_get_srv_inum,
3738 .query_file_info = smb2_query_file_info,
3739 .set_path_size = smb2_set_path_size,
3740 .set_file_size = smb2_set_file_size,
3741 .set_file_info = smb2_set_file_info,
3742 .set_compression = smb2_set_compression,
3743 .mkdir = smb2_mkdir,
3744 .mkdir_setinfo = smb2_mkdir_setinfo,
bea851b8 3745 .posix_mkdir = smb311_posix_mkdir,
aab1893d
SF		 3746 .rmdir = smb2_rmdir,
3747 .unlink = smb2_unlink,
3748 .rename = smb2_rename_path,
3749 .create_hardlink = smb2_create_hardlink,
3750 .query_symlink = smb2_query_symlink,
3751 .query_mf_symlink = smb3_query_mf_symlink,
3752 .create_mf_symlink = smb3_create_mf_symlink,
3753 .open = smb2_open_file,
3754 .set_fid = smb2_set_fid,
3755 .close = smb2_close_file,
3756 .flush = smb2_flush_file,
3757 .async_readv = smb2_async_readv,
3758 .async_writev = smb2_async_writev,
3759 .sync_read = smb2_sync_read,
3760 .sync_write = smb2_sync_write,
3761 .query_dir_first = smb2_query_dir_first,
3762 .query_dir_next = smb2_query_dir_next,
3763 .close_dir = smb2_close_dir,
3764 .calc_smb_size = smb2_calc_size,
3765 .is_status_pending = smb2_is_status_pending,
511c54a2 3766 .is_session_expired = smb2_is_session_expired,
aab1893d 3767 .oplock_response = smb2_oplock_response,
2d304217 3768 .queryfs = smb311_queryfs,
aab1893d
SF		 3769 .mand_lock = smb2_mand_lock,
3770 .mand_unlock_range = smb2_unlock_range,
3771 .push_mand_locks = smb2_push_mandatory_locks,
3772 .get_lease_key = smb2_get_lease_key,
3773 .set_lease_key = smb2_set_lease_key,
3774 .new_lease_key = smb2_new_lease_key,
373512ec 3775 .generate_signingkey = generate_smb311signingkey,
aab1893d 3776 .calc_signature = smb3_calc_signature,
b3152e2c 3777 .set_integrity = smb3_set_integrity,
aab1893d
SF		 3778 .is_read_op = smb21_is_read_op,
3779 .set_oplock_level = smb3_set_oplock_level,
3780 .create_lease_buf = smb3_create_lease_buf,
3781 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 3782 .copychunk_range = smb2_copychunk_range,
02b16665 3783 .duplicate_extents = smb2_duplicate_extents,
aab1893d
SF		 3784/* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
3785 .wp_retry_size = smb2_wp_retry_size,
3786 .dir_needs_close = smb2_dir_needs_close,
3787 .fallocate = smb3_fallocate,
834170c8 3788 .enum_snapshots = smb3_enum_snapshots,
026e93dc 3789 .init_transform_rq = smb3_init_transform_rq,
4326ed2f
PS		 3790 .is_transform_hdr = smb3_is_transform_hdr,
3791 .receive_transform = smb3_receive_transform,
9d49640a 3792 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3793 .select_sectype = smb2_select_sectype,
95907fea
RS		 3794#ifdef CONFIG_CIFS_XATTR
3795 .query_all_EAs = smb2_query_eas,
5517554e 3796 .set_EA = smb2_set_ea,
95907fea 3797#endif /* CIFS_XATTR */
c1777df1
RS		 3798#ifdef CONFIG_CIFS_ACL
3799 .get_acl = get_smb2_acl,
3800 .get_acl_by_fid = get_smb2_acl_by_fid,
3801 .set_acl = set_smb2_acl,
3802#endif /* CIFS_ACL */
8ce79ec3 3803 .next_header = smb2_next_header,
f5b05d62 3804 .ioctl_query_info = smb2_ioctl_query_info,
aab1893d 3805};
aab1893d 3806
dd446b16
SF		 3807struct smb_version_values smb20_values = {
3808 .version_string = SMB20_VERSION_STRING,
3809 .protocol_id = SMB20_PROT_ID,
3810 .req_capabilities = 0, /* MBZ */
3811 .large_lock_type = 0,
3812 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3813 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3814 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3815 .header_size = sizeof(struct smb2_sync_hdr),
3816 .header_preamble_size = 0,
dd446b16
SF		 3817 .max_header_size = MAX_SMB2_HDR_SIZE,
3818 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3819 .lock_cmd = SMB2_LOCK,
3820 .cap_unix = 0,
3821 .cap_nt_find = SMB2_NT_FIND,
3822 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3823 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3824 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 3825 .create_lease_size = sizeof(struct create_lease),
dd446b16
SF		 3826};
3827
1080ef75
SF		 3828struct smb_version_values smb21_values = {
3829 .version_string = SMB21_VERSION_STRING,
e4aa25e7
SF		 3830 .protocol_id = SMB21_PROT_ID,
3831 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
3832 .large_lock_type = 0,
3833 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3834 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3835 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3836 .header_size = sizeof(struct smb2_sync_hdr),
3837 .header_preamble_size = 0,
e4aa25e7
SF		 3838 .max_header_size = MAX_SMB2_HDR_SIZE,
3839 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3840 .lock_cmd = SMB2_LOCK,
3841 .cap_unix = 0,
3842 .cap_nt_find = SMB2_NT_FIND,
3843 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3844 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3845 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 3846 .create_lease_size = sizeof(struct create_lease),
e4aa25e7
SF		 3847};
3848
9764c02f
SF		 3849struct smb_version_values smb3any_values = {
3850 .version_string = SMB3ANY_VERSION_STRING,
3851 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
f8015683 3852 .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		 3853 .large_lock_type = 0,
3854 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3855 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3856 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3857 .header_size = sizeof(struct smb2_sync_hdr),
3858 .header_preamble_size = 0,
9764c02f
SF		 3859 .max_header_size = MAX_SMB2_HDR_SIZE,
3860 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3861 .lock_cmd = SMB2_LOCK,
3862 .cap_unix = 0,
3863 .cap_nt_find = SMB2_NT_FIND,
3864 .cap_large_files = SMB2_LARGE_FILES,
3865 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3866 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3867 .create_lease_size = sizeof(struct create_lease_v2),
3868};
3869
3870struct smb_version_values smbdefault_values = {
3871 .version_string = SMBDEFAULT_VERSION_STRING,
3872 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
f8015683 3873 .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		 3874 .large_lock_type = 0,
3875 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3876 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3877 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3878 .header_size = sizeof(struct smb2_sync_hdr),
3879 .header_preamble_size = 0,
9764c02f
SF		 3880 .max_header_size = MAX_SMB2_HDR_SIZE,
3881 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3882 .lock_cmd = SMB2_LOCK,
3883 .cap_unix = 0,
3884 .cap_nt_find = SMB2_NT_FIND,
3885 .cap_large_files = SMB2_LARGE_FILES,
3886 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3887 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3888 .create_lease_size = sizeof(struct create_lease_v2),
3889};
3890
e4aa25e7
SF		 3891struct smb_version_values smb30_values = {
3892 .version_string = SMB30_VERSION_STRING,
3893 .protocol_id = SMB30_PROT_ID,
f8015683 3894 .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		 3895 .large_lock_type = 0,
3896 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3897 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3898 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3899 .header_size = sizeof(struct smb2_sync_hdr),
3900 .header_preamble_size = 0,
093b2bda 3901 .max_header_size = MAX_SMB2_HDR_SIZE,
09a4707e 3902 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2dc7e1c0 3903 .lock_cmd = SMB2_LOCK,
29e20f9c
PS		 3904 .cap_unix = 0,
3905 .cap_nt_find = SMB2_NT_FIND,
3906 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3907 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3908 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 3909 .create_lease_size = sizeof(struct create_lease_v2),
1080ef75 3910};
20b6d8b4
SF		 3911
3912struct smb_version_values smb302_values = {
3913 .version_string = SMB302_VERSION_STRING,
3914 .protocol_id = SMB302_PROT_ID,
f8015683 3915 .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		 3916 .large_lock_type = 0,
3917 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3918 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3919 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3920 .header_size = sizeof(struct smb2_sync_hdr),
3921 .header_preamble_size = 0,
20b6d8b4
SF		 3922 .max_header_size = MAX_SMB2_HDR_SIZE,
3923 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3924 .lock_cmd = SMB2_LOCK,
3925 .cap_unix = 0,
3926 .cap_nt_find = SMB2_NT_FIND,
3927 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3928 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3929 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 3930 .create_lease_size = sizeof(struct create_lease_v2),
20b6d8b4 3931};
5f7fbf73 3932
5f7fbf73
SF		 3933struct smb_version_values smb311_values = {
3934 .version_string = SMB311_VERSION_STRING,
3935 .protocol_id = SMB311_PROT_ID,
f8015683 3936 .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		 3937 .large_lock_type = 0,
3938 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3939 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3940 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3941 .header_size = sizeof(struct smb2_sync_hdr),
3942 .header_preamble_size = 0,
5f7fbf73
SF		 3943 .max_header_size = MAX_SMB2_HDR_SIZE,
3944 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3945 .lock_cmd = SMB2_LOCK,
3946 .cap_unix = 0,
3947 .cap_nt_find = SMB2_NT_FIND,
3948 .cap_large_files = SMB2_LARGE_FILES,
3949 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3950 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3951 .create_lease_size = sizeof(struct create_lease_v2),
3952};
Linux 6.x block layer and io_uring tree(s)