SMB3: Allow SMB3 FSCTL queries to be sent to server from tools
[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 36
ef68e831 37/* Change credits for different ops and return the total number of credits */
28ea5290
PS
38static int
39change_conf(struct TCP_Server_Info *server)
40{
41 server->credits += server->echo_credits + server->oplock_credits;
42 server->oplock_credits = server->echo_credits = 0;
43 switch (server->credits) {
44 case 0:
ef68e831 45 return 0;
28ea5290
PS
46 case 1:
47 server->echoes = false;
48 server->oplocks = false;
28ea5290
PS
49 break;
50 case 2:
51 server->echoes = true;
52 server->oplocks = false;
53 server->echo_credits = 1;
28ea5290
PS
54 break;
55 default:
56 server->echoes = true;
e0ddde9d
SF
57 if (enable_oplocks) {
58 server->oplocks = true;
59 server->oplock_credits = 1;
60 } else
61 server->oplocks = false;
62
28ea5290 63 server->echo_credits = 1;
28ea5290
PS
64 }
65 server->credits -= server->echo_credits + server->oplock_credits;
ef68e831 66 return server->credits + server->echo_credits + server->oplock_credits;
28ea5290
PS
67}
68
69static void
335b7b62
PS
70smb2_add_credits(struct TCP_Server_Info *server,
71 const struct cifs_credits *credits, const int optype)
28ea5290 72{
ef68e831 73 int *val, rc = -1;
335b7b62
PS
74 unsigned int add = credits->value;
75 unsigned int instance = credits->instance;
76 bool reconnect_detected = false;
ef68e831 77
28ea5290
PS
78 spin_lock(&server->req_lock);
79 val = server->ops->get_credits_field(server, optype);
b340a4d4
SF
80
81 /* eg found case where write overlapping reconnect messed up credits */
82 if (((optype & CIFS_OP_MASK) == CIFS_NEG_OP) && (*val != 0))
83 trace_smb3_reconnect_with_invalid_credits(server->CurrentMid,
84 server->hostname, *val);
335b7b62
PS
85 if ((instance == 0) || (instance == server->reconnect_instance))
86 *val += add;
87 else
88 reconnect_detected = true;
b340a4d4 89
141891f4
SF
90 if (*val > 65000) {
91 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
92 printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
93 }
28ea5290 94 server->in_flight--;
ec2e4523 95 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
28ea5290 96 rc = change_conf(server);
983c88a4
PS
97 /*
98 * Sometimes server returns 0 credits on oplock break ack - we need to
99 * rebalance credits in this case.
100 */
101 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
102 server->oplocks) {
103 if (server->credits > 1) {
104 server->credits--;
105 server->oplock_credits++;
106 }
107 }
28ea5290
PS
108 spin_unlock(&server->req_lock);
109 wake_up(&server->request_q);
ef68e831 110
335b7b62
PS
111 if (reconnect_detected)
112 cifs_dbg(FYI, "trying to put %d credits from the old server instance %d\n",
113 add, instance);
114
82e0457a
PS
115 if (server->tcpStatus == CifsNeedReconnect
116 || server->tcpStatus == CifsExiting)
ef68e831
PS
117 return;
118
119 switch (rc) {
120 case -1:
121 /* change_conf hasn't been executed */
122 break;
123 case 0:
124 cifs_dbg(VFS, "Possible client or server bug - zero credits\n");
125 break;
126 case 1:
127 cifs_dbg(VFS, "disabling echoes and oplocks\n");
128 break;
129 case 2:
130 cifs_dbg(FYI, "disabling oplocks\n");
131 break;
132 default:
133 cifs_dbg(FYI, "add %u credits total=%d\n", add, rc);
134 }
28ea5290
PS
135}
136
137static void
138smb2_set_credits(struct TCP_Server_Info *server, const int val)
139{
140 spin_lock(&server->req_lock);
141 server->credits = val;
9e1a37da
SF
142 if (val == 1)
143 server->reconnect_instance++;
28ea5290 144 spin_unlock(&server->req_lock);
6e4d3bbe
SF
145 /* don't log while holding the lock */
146 if (val == 1)
147 cifs_dbg(FYI, "set credits to 1 due to smb2 reconnect\n");
28ea5290
PS
148}
149
150static int *
151smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
152{
153 switch (optype) {
154 case CIFS_ECHO_OP:
155 return &server->echo_credits;
156 case CIFS_OBREAK_OP:
157 return &server->oplock_credits;
158 default:
159 return &server->credits;
160 }
161}
162
163static unsigned int
164smb2_get_credits(struct mid_q_entry *mid)
165{
49f466bd 166 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)mid->resp_buf;
31473fc4 167
3d3003fc
PS
168 if (mid->mid_state == MID_RESPONSE_RECEIVED
169 || mid->mid_state == MID_RESPONSE_MALFORMED)
170 return le16_to_cpu(shdr->CreditRequest);
171
172 return 0;
28ea5290 173}
2dc7e1c0 174
cb7e9eab
PS
175static int
176smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
335b7b62 177 unsigned int *num, struct cifs_credits *credits)
cb7e9eab
PS
178{
179 int rc = 0;
180 unsigned int scredits;
181
182 spin_lock(&server->req_lock);
183 while (1) {
184 if (server->credits <= 0) {
185 spin_unlock(&server->req_lock);
186 cifs_num_waiters_inc(server);
187 rc = wait_event_killable(server->request_q,
b227d215 188 has_credits(server, &server->credits, 1));
cb7e9eab
PS
189 cifs_num_waiters_dec(server);
190 if (rc)
191 return rc;
192 spin_lock(&server->req_lock);
193 } else {
194 if (server->tcpStatus == CifsExiting) {
195 spin_unlock(&server->req_lock);
196 return -ENOENT;
197 }
198
199 scredits = server->credits;
200 /* can deadlock with reopen */
acc58d0b 201 if (scredits <= 8) {
cb7e9eab 202 *num = SMB2_MAX_BUFFER_SIZE;
335b7b62
PS
203 credits->value = 0;
204 credits->instance = 0;
cb7e9eab
PS
205 break;
206 }
207
acc58d0b
PS
208 /* leave some credits for reopen and other ops */
209 scredits -= 8;
cb7e9eab
PS
210 *num = min_t(unsigned int, size,
211 scredits * SMB2_MAX_BUFFER_SIZE);
212
335b7b62
PS
213 credits->value =
214 DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
215 credits->instance = server->reconnect_instance;
216 server->credits -= credits->value;
cb7e9eab
PS
217 server->in_flight++;
218 break;
219 }
220 }
221 spin_unlock(&server->req_lock);
222 return rc;
223}
224
9a1c67e8
PS
225static int
226smb2_adjust_credits(struct TCP_Server_Info *server,
227 struct cifs_credits *credits,
228 const unsigned int payload_size)
229{
230 int new_val = DIV_ROUND_UP(payload_size, SMB2_MAX_BUFFER_SIZE);
231
232 if (!credits->value || credits->value == new_val)
233 return 0;
234
235 if (credits->value < new_val) {
236 WARN_ONCE(1, "request has less credits (%d) than required (%d)",
237 credits->value, new_val);
238 return -ENOTSUPP;
239 }
240
241 spin_lock(&server->req_lock);
242
243 if (server->reconnect_instance != credits->instance) {
244 spin_unlock(&server->req_lock);
245 cifs_dbg(VFS, "trying to return %d credits to old session\n",
246 credits->value - new_val);
247 return -EAGAIN;
248 }
249
250 server->credits += credits->value - new_val;
251 spin_unlock(&server->req_lock);
252 wake_up(&server->request_q);
253 credits->value = new_val;
254 return 0;
255}
256
2dc7e1c0
PS
257static __u64
258smb2_get_next_mid(struct TCP_Server_Info *server)
259{
260 __u64 mid;
261 /* for SMB2 we need the current value */
262 spin_lock(&GlobalMid_Lock);
263 mid = server->CurrentMid++;
264 spin_unlock(&GlobalMid_Lock);
265 return mid;
266}
1080ef75 267
c781af7e
PS
268static void
269smb2_revert_current_mid(struct TCP_Server_Info *server, const unsigned int val)
270{
271 spin_lock(&GlobalMid_Lock);
272 if (server->CurrentMid >= val)
273 server->CurrentMid -= val;
274 spin_unlock(&GlobalMid_Lock);
275}
276
093b2bda
PS
277static struct mid_q_entry *
278smb2_find_mid(struct TCP_Server_Info *server, char *buf)
279{
280 struct mid_q_entry *mid;
49f466bd 281 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
31473fc4 282 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
093b2bda 283
31473fc4 284 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
373512ec
SF
285 cifs_dbg(VFS, "encrypted frame parsing not supported yet");
286 return NULL;
287 }
288
093b2bda
PS
289 spin_lock(&GlobalMid_Lock);
290 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
9235d098 291 if ((mid->mid == wire_mid) &&
093b2bda 292 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
31473fc4 293 (mid->command == shdr->Command)) {
696e420b 294 kref_get(&mid->refcount);
093b2bda
PS
295 spin_unlock(&GlobalMid_Lock);
296 return mid;
297 }
298 }
299 spin_unlock(&GlobalMid_Lock);
300 return NULL;
301}
302
303static void
14547f7d 304smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
093b2bda
PS
305{
306#ifdef CONFIG_CIFS_DEBUG2
49f466bd 307 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
093b2bda 308
f96637be 309 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
31473fc4
PS
310 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
311 shdr->ProcessId);
14547f7d 312 cifs_dbg(VFS, "smb buf %p len %u\n", buf,
71992e62 313 server->ops->calc_smb_size(buf, server));
093b2bda
PS
314#endif
315}
316
ec2e4523
PS
317static bool
318smb2_need_neg(struct TCP_Server_Info *server)
319{
320 return server->max_read == 0;
321}
322
323static int
324smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
325{
326 int rc;
327 ses->server->CurrentMid = 0;
328 rc = SMB2_negotiate(xid, ses);
329 /* BB we probably don't need to retry with modern servers */
330 if (rc == -EAGAIN)
331 rc = -EHOSTDOWN;
332 return rc;
333}
334
3a3bab50
PS
335static unsigned int
336smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
337{
338 struct TCP_Server_Info *server = tcon->ses->server;
339 unsigned int wsize;
340
341 /* start with specified wsize, or default */
342 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
343 wsize = min_t(unsigned int, wsize, server->max_write);
09902f8d 344#ifdef CONFIG_CIFS_SMB_DIRECT
bb4c0419
LL
345 if (server->rdma) {
346 if (server->sign)
347 wsize = min_t(unsigned int,
348 wsize, server->smbd_conn->max_fragmented_send_size);
349 else
350 wsize = min_t(unsigned int,
09902f8d 351 wsize, server->smbd_conn->max_readwrite_size);
bb4c0419 352 }
09902f8d 353#endif
cb7e9eab
PS
354 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
355 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 356
3a3bab50
PS
357 return wsize;
358}
359
3d621230
SF
360static unsigned int
361smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
362{
363 struct TCP_Server_Info *server = tcon->ses->server;
364 unsigned int wsize;
365
366 /* start with specified wsize, or default */
367 wsize = volume_info->wsize ? volume_info->wsize : SMB3_DEFAULT_IOSIZE;
368 wsize = min_t(unsigned int, wsize, server->max_write);
369#ifdef CONFIG_CIFS_SMB_DIRECT
370 if (server->rdma) {
371 if (server->sign)
372 wsize = min_t(unsigned int,
373 wsize, server->smbd_conn->max_fragmented_send_size);
374 else
375 wsize = min_t(unsigned int,
376 wsize, server->smbd_conn->max_readwrite_size);
377 }
378#endif
379 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
380 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
381
382 return wsize;
383}
384
3a3bab50
PS
385static unsigned int
386smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
387{
388 struct TCP_Server_Info *server = tcon->ses->server;
389 unsigned int rsize;
390
391 /* start with specified rsize, or default */
392 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
393 rsize = min_t(unsigned int, rsize, server->max_read);
09902f8d 394#ifdef CONFIG_CIFS_SMB_DIRECT
bb4c0419
LL
395 if (server->rdma) {
396 if (server->sign)
397 rsize = min_t(unsigned int,
398 rsize, server->smbd_conn->max_fragmented_recv_size);
399 else
400 rsize = min_t(unsigned int,
09902f8d 401 rsize, server->smbd_conn->max_readwrite_size);
bb4c0419 402 }
09902f8d 403#endif
bed9da02
PS
404
405 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
406 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 407
3a3bab50
PS
408 return rsize;
409}
410
3d621230
SF
411static unsigned int
412smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
413{
414 struct TCP_Server_Info *server = tcon->ses->server;
415 unsigned int rsize;
416
417 /* start with specified rsize, or default */
418 rsize = volume_info->rsize ? volume_info->rsize : SMB3_DEFAULT_IOSIZE;
419 rsize = min_t(unsigned int, rsize, server->max_read);
420#ifdef CONFIG_CIFS_SMB_DIRECT
421 if (server->rdma) {
422 if (server->sign)
423 rsize = min_t(unsigned int,
424 rsize, server->smbd_conn->max_fragmented_recv_size);
425 else
426 rsize = min_t(unsigned int,
427 rsize, server->smbd_conn->max_readwrite_size);
428 }
429#endif
430
431 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
432 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
433
434 return rsize;
435}
fe856be4
AA
436
437static int
438parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
439 size_t buf_len,
440 struct cifs_server_iface **iface_list,
441 size_t *iface_count)
442{
443 struct network_interface_info_ioctl_rsp *p;
444 struct sockaddr_in *addr4;
445 struct sockaddr_in6 *addr6;
446 struct iface_info_ipv4 *p4;
447 struct iface_info_ipv6 *p6;
448 struct cifs_server_iface *info;
449 ssize_t bytes_left;
450 size_t next = 0;
451 int nb_iface = 0;
452 int rc = 0;
453
454 *iface_list = NULL;
455 *iface_count = 0;
456
457 /*
458 * Fist pass: count and sanity check
459 */
460
461 bytes_left = buf_len;
462 p = buf;
463 while (bytes_left >= sizeof(*p)) {
464 nb_iface++;
465 next = le32_to_cpu(p->Next);
466 if (!next) {
467 bytes_left -= sizeof(*p);
468 break;
469 }
470 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
471 bytes_left -= next;
472 }
473
474 if (!nb_iface) {
475 cifs_dbg(VFS, "%s: malformed interface info\n", __func__);
476 rc = -EINVAL;
477 goto out;
478 }
479
480 if (bytes_left || p->Next)
481 cifs_dbg(VFS, "%s: incomplete interface info\n", __func__);
482
483
484 /*
485 * Second pass: extract info to internal structure
486 */
487
488 *iface_list = kcalloc(nb_iface, sizeof(**iface_list), GFP_KERNEL);
489 if (!*iface_list) {
490 rc = -ENOMEM;
491 goto out;
492 }
493
494 info = *iface_list;
495 bytes_left = buf_len;
496 p = buf;
497 while (bytes_left >= sizeof(*p)) {
498 info->speed = le64_to_cpu(p->LinkSpeed);
499 info->rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE);
500 info->rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE);
501
502 cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, *iface_count);
503 cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed);
504 cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__,
505 le32_to_cpu(p->Capability));
506
507 switch (p->Family) {
508 /*
509 * The kernel and wire socket structures have the same
510 * layout and use network byte order but make the
511 * conversion explicit in case either one changes.
512 */
513 case INTERNETWORK:
514 addr4 = (struct sockaddr_in *)&info->sockaddr;
515 p4 = (struct iface_info_ipv4 *)p->Buffer;
516 addr4->sin_family = AF_INET;
517 memcpy(&addr4->sin_addr, &p4->IPv4Address, 4);
518
519 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
520 addr4->sin_port = cpu_to_be16(CIFS_PORT);
521
522 cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__,
523 &addr4->sin_addr);
524 break;
525 case INTERNETWORKV6:
526 addr6 = (struct sockaddr_in6 *)&info->sockaddr;
527 p6 = (struct iface_info_ipv6 *)p->Buffer;
528 addr6->sin6_family = AF_INET6;
529 memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16);
530
531 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
532 addr6->sin6_flowinfo = 0;
533 addr6->sin6_scope_id = 0;
534 addr6->sin6_port = cpu_to_be16(CIFS_PORT);
535
536 cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__,
537 &addr6->sin6_addr);
538 break;
539 default:
540 cifs_dbg(VFS,
541 "%s: skipping unsupported socket family\n",
542 __func__);
543 goto next_iface;
544 }
545
546 (*iface_count)++;
547 info++;
548next_iface:
549 next = le32_to_cpu(p->Next);
550 if (!next)
551 break;
552 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
553 bytes_left -= next;
554 }
555
556 if (!*iface_count) {
557 rc = -EINVAL;
558 goto out;
559 }
560
561out:
562 if (rc) {
563 kfree(*iface_list);
564 *iface_count = 0;
565 *iface_list = NULL;
566 }
567 return rc;
568}
569
570
c481e9fe
SF
571static int
572SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
573{
574 int rc;
575 unsigned int ret_data_len = 0;
fe856be4
AA
576 struct network_interface_info_ioctl_rsp *out_buf = NULL;
577 struct cifs_server_iface *iface_list;
578 size_t iface_count;
579 struct cifs_ses *ses = tcon->ses;
c481e9fe
SF
580
581 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
582 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
583 NULL /* no data input */, 0 /* no data input */,
584 (char **)&out_buf, &ret_data_len);
c3ed4402
SF
585 if (rc == -EOPNOTSUPP) {
586 cifs_dbg(FYI,
587 "server does not support query network interfaces\n");
588 goto out;
589 } else if (rc != 0) {
9ffc5412 590 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
fe856be4 591 goto out;
9ffc5412 592 }
fe856be4
AA
593
594 rc = parse_server_interfaces(out_buf, ret_data_len,
595 &iface_list, &iface_count);
596 if (rc)
597 goto out;
598
599 spin_lock(&ses->iface_lock);
600 kfree(ses->iface_list);
601 ses->iface_list = iface_list;
602 ses->iface_count = iface_count;
603 ses->iface_last_update = jiffies;
604 spin_unlock(&ses->iface_lock);
605
606out:
24df1483 607 kfree(out_buf);
c481e9fe
SF
608 return rc;
609}
c481e9fe 610
9da6ec77
RS
611static void
612smb2_close_cached_fid(struct kref *ref)
a93864d9 613{
9da6ec77
RS
614 struct cached_fid *cfid = container_of(ref, struct cached_fid,
615 refcount);
616
a93864d9
RS
617 if (cfid->is_valid) {
618 cifs_dbg(FYI, "clear cached root file handle\n");
619 SMB2_close(0, cfid->tcon, cfid->fid->persistent_fid,
620 cfid->fid->volatile_fid);
621 cfid->is_valid = false;
b0f6df73 622 cfid->file_all_info_is_valid = false;
a93864d9 623 }
9da6ec77
RS
624}
625
626void close_shroot(struct cached_fid *cfid)
627{
628 mutex_lock(&cfid->fid_mutex);
629 kref_put(&cfid->refcount, smb2_close_cached_fid);
a93864d9
RS
630 mutex_unlock(&cfid->fid_mutex);
631}
632
9da6ec77
RS
633void
634smb2_cached_lease_break(struct work_struct *work)
635{
636 struct cached_fid *cfid = container_of(work,
637 struct cached_fid, lease_break);
638
639 close_shroot(cfid);
640}
641
3d4ef9a1
SF
642/*
643 * Open the directory at the root of a share
644 */
645int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
646{
b0f6df73
RS
647 struct cifs_ses *ses = tcon->ses;
648 struct TCP_Server_Info *server = ses->server;
649 struct cifs_open_parms oparms;
650 struct smb2_create_rsp *o_rsp = NULL;
651 struct smb2_query_info_rsp *qi_rsp = NULL;
652 int resp_buftype[2];
653 struct smb_rqst rqst[2];
654 struct kvec rsp_iov[2];
655 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
656 struct kvec qi_iov[1];
657 int rc, flags = 0;
658 __le16 utf16_path = 0; /* Null - since an open of top of share */
a93864d9 659 u8 oplock = SMB2_OPLOCK_LEVEL_II;
3d4ef9a1 660
a93864d9
RS
661 mutex_lock(&tcon->crfid.fid_mutex);
662 if (tcon->crfid.is_valid) {
3d4ef9a1 663 cifs_dbg(FYI, "found a cached root file handle\n");
a93864d9 664 memcpy(pfid, tcon->crfid.fid, sizeof(struct cifs_fid));
9da6ec77 665 kref_get(&tcon->crfid.refcount);
a93864d9 666 mutex_unlock(&tcon->crfid.fid_mutex);
3d4ef9a1
SF
667 return 0;
668 }
669
b0f6df73
RS
670 if (smb3_encryption_required(tcon))
671 flags |= CIFS_TRANSFORM_REQ;
672
673 memset(rqst, 0, sizeof(rqst));
674 resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
675 memset(rsp_iov, 0, sizeof(rsp_iov));
676
677 /* Open */
678 memset(&open_iov, 0, sizeof(open_iov));
679 rqst[0].rq_iov = open_iov;
680 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
681
682 oparms.tcon = tcon;
683 oparms.create_options = 0;
684 oparms.desired_access = FILE_READ_ATTRIBUTES;
685 oparms.disposition = FILE_OPEN;
686 oparms.fid = pfid;
687 oparms.reconnect = false;
688
689 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &utf16_path);
690 if (rc)
691 goto oshr_exit;
692 smb2_set_next_command(tcon, &rqst[0]);
693
694 memset(&qi_iov, 0, sizeof(qi_iov));
695 rqst[1].rq_iov = qi_iov;
696 rqst[1].rq_nvec = 1;
697
698 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID,
699 COMPOUND_FID, FILE_ALL_INFORMATION,
700 SMB2_O_INFO_FILE, 0,
701 sizeof(struct smb2_file_all_info) +
702 PATH_MAX * 2, 0, NULL);
703 if (rc)
704 goto oshr_exit;
705
706 smb2_set_related(&rqst[1]);
707
708 rc = compound_send_recv(xid, ses, flags, 2, rqst,
709 resp_buftype, rsp_iov);
710 if (rc)
711 goto oshr_exit;
712
713 o_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
714 oparms.fid->persistent_fid = o_rsp->PersistentFileId;
715 oparms.fid->volatile_fid = o_rsp->VolatileFileId;
716#ifdef CONFIG_CIFS_DEBUG2
717 oparms.fid->mid = le64_to_cpu(o_rsp->sync_hdr.MessageId);
718#endif /* CIFS_DEBUG2 */
719
720 if (o_rsp->OplockLevel == SMB2_OPLOCK_LEVEL_LEASE)
721 oplock = smb2_parse_lease_state(server, o_rsp,
722 &oparms.fid->epoch,
723 oparms.fid->lease_key);
724 else
725 goto oshr_exit;
726
727
728 memcpy(tcon->crfid.fid, pfid, sizeof(struct cifs_fid));
729 tcon->crfid.tcon = tcon;
730 tcon->crfid.is_valid = true;
731 kref_init(&tcon->crfid.refcount);
732 kref_get(&tcon->crfid.refcount);
733
734
735 qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
736 if (le32_to_cpu(qi_rsp->OutputBufferLength) < sizeof(struct smb2_file_all_info))
737 goto oshr_exit;
738 rc = smb2_validate_and_copy_iov(
739 le16_to_cpu(qi_rsp->OutputBufferOffset),
740 sizeof(struct smb2_file_all_info),
741 &rsp_iov[1], sizeof(struct smb2_file_all_info),
742 (char *)&tcon->crfid.file_all_info);
743 if (rc)
744 goto oshr_exit;
745 tcon->crfid.file_all_info_is_valid = 1;
746
747 oshr_exit:
a93864d9 748 mutex_unlock(&tcon->crfid.fid_mutex);
b0f6df73
RS
749 SMB2_open_free(&rqst[0]);
750 SMB2_query_info_free(&rqst[1]);
751 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
752 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
3d4ef9a1
SF
753 return rc;
754}
755
af6a12ea
SF
756static void
757smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
758{
759 int rc;
760 __le16 srch_path = 0; /* Null - open root of share */
761 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
762 struct cifs_open_parms oparms;
763 struct cifs_fid fid;
3d4ef9a1 764 bool no_cached_open = tcon->nohandlecache;
af6a12ea
SF
765
766 oparms.tcon = tcon;
767 oparms.desired_access = FILE_READ_ATTRIBUTES;
768 oparms.disposition = FILE_OPEN;
769 oparms.create_options = 0;
770 oparms.fid = &fid;
771 oparms.reconnect = false;
772
3d4ef9a1 773 if (no_cached_open)
9d874c36
RS
774 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
775 NULL);
3d4ef9a1
SF
776 else
777 rc = open_shroot(xid, tcon, &fid);
778
af6a12ea
SF
779 if (rc)
780 return;
781
c481e9fe 782 SMB3_request_interfaces(xid, tcon);
c481e9fe 783
af6a12ea
SF
784 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
785 FS_ATTRIBUTE_INFORMATION);
786 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
787 FS_DEVICE_INFORMATION);
21ba3845
SF
788 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
789 FS_VOLUME_INFORMATION);
af6a12ea
SF
790 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
791 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
3d4ef9a1
SF
792 if (no_cached_open)
793 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
9da6ec77
RS
794 else
795 close_shroot(&tcon->crfid);
796
af6a12ea
SF
797 return;
798}
799
34f62640
SF
800static void
801smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
802{
803 int rc;
804 __le16 srch_path = 0; /* Null - open root of share */
805 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
806 struct cifs_open_parms oparms;
807 struct cifs_fid fid;
808
809 oparms.tcon = tcon;
810 oparms.desired_access = FILE_READ_ATTRIBUTES;
811 oparms.disposition = FILE_OPEN;
812 oparms.create_options = 0;
813 oparms.fid = &fid;
814 oparms.reconnect = false;
815
9d874c36 816 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
34f62640
SF
817 if (rc)
818 return;
819
2167114c
SF
820 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
821 FS_ATTRIBUTE_INFORMATION);
822 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
823 FS_DEVICE_INFORMATION);
34f62640
SF
824 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
825 return;
826}
827
2503a0db
PS
828static int
829smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
830 struct cifs_sb_info *cifs_sb, const char *full_path)
831{
832 int rc;
2503a0db 833 __le16 *utf16_path;
2e44b288 834 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS
835 struct cifs_open_parms oparms;
836 struct cifs_fid fid;
2503a0db 837
a93864d9 838 if ((*full_path == 0) && tcon->crfid.is_valid)
3d4ef9a1
SF
839 return 0;
840
2503a0db
PS
841 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
842 if (!utf16_path)
843 return -ENOMEM;
844
064f6047
PS
845 oparms.tcon = tcon;
846 oparms.desired_access = FILE_READ_ATTRIBUTES;
847 oparms.disposition = FILE_OPEN;
5e19697b
SF
848 if (backup_cred(cifs_sb))
849 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
850 else
851 oparms.create_options = 0;
064f6047 852 oparms.fid = &fid;
9cbc0b73 853 oparms.reconnect = false;
064f6047 854
9d874c36 855 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2503a0db
PS
856 if (rc) {
857 kfree(utf16_path);
858 return rc;
859 }
860
064f6047 861 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2503a0db
PS
862 kfree(utf16_path);
863 return rc;
864}
865
be4cb9e3
PS
866static int
867smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
868 struct cifs_sb_info *cifs_sb, const char *full_path,
869 u64 *uniqueid, FILE_ALL_INFO *data)
870{
871 *uniqueid = le64_to_cpu(data->IndexNumber);
872 return 0;
873}
874
b7546bc5
PS
875static int
876smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
877 struct cifs_fid *fid, FILE_ALL_INFO *data)
878{
879 int rc;
880 struct smb2_file_all_info *smb2_data;
881
1bbe4997 882 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
b7546bc5
PS
883 GFP_KERNEL);
884 if (smb2_data == NULL)
885 return -ENOMEM;
886
887 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
888 smb2_data);
889 if (!rc)
890 move_smb2_info_to_cifs(data, smb2_data);
891 kfree(smb2_data);
892 return rc;
893}
894
1368f155 895#ifdef CONFIG_CIFS_XATTR
95907fea
RS
896static ssize_t
897move_smb2_ea_to_cifs(char *dst, size_t dst_size,
898 struct smb2_file_full_ea_info *src, size_t src_size,
899 const unsigned char *ea_name)
900{
901 int rc = 0;
902 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
903 char *name, *value;
0c5d6cb6 904 size_t buf_size = dst_size;
95907fea
RS
905 size_t name_len, value_len, user_name_len;
906
907 while (src_size > 0) {
908 name = &src->ea_data[0];
909 name_len = (size_t)src->ea_name_length;
910 value = &src->ea_data[src->ea_name_length + 1];
911 value_len = (size_t)le16_to_cpu(src->ea_value_length);
912
913 if (name_len == 0) {
914 break;
915 }
916
917 if (src_size < 8 + name_len + 1 + value_len) {
918 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
919 rc = -EIO;
920 goto out;
921 }
922
923 if (ea_name) {
924 if (ea_name_len == name_len &&
925 memcmp(ea_name, name, name_len) == 0) {
926 rc = value_len;
927 if (dst_size == 0)
928 goto out;
929 if (dst_size < value_len) {
930 rc = -ERANGE;
931 goto out;
932 }
933 memcpy(dst, value, value_len);
934 goto out;
935 }
936 } else {
937 /* 'user.' plus a terminating null */
938 user_name_len = 5 + 1 + name_len;
939
0c5d6cb6
RS
940 if (buf_size == 0) {
941 /* skip copy - calc size only */
942 rc += user_name_len;
943 } else if (dst_size >= user_name_len) {
95907fea
RS
944 dst_size -= user_name_len;
945 memcpy(dst, "user.", 5);
946 dst += 5;
947 memcpy(dst, src->ea_data, name_len);
948 dst += name_len;
949 *dst = 0;
950 ++dst;
0c5d6cb6 951 rc += user_name_len;
95907fea
RS
952 } else {
953 /* stop before overrun buffer */
954 rc = -ERANGE;
955 break;
956 }
957 }
958
959 if (!src->next_entry_offset)
960 break;
961
962 if (src_size < le32_to_cpu(src->next_entry_offset)) {
963 /* stop before overrun buffer */
964 rc = -ERANGE;
965 break;
966 }
967 src_size -= le32_to_cpu(src->next_entry_offset);
968 src = (void *)((char *)src +
969 le32_to_cpu(src->next_entry_offset));
970 }
971
972 /* didn't find the named attribute */
973 if (ea_name)
974 rc = -ENODATA;
975
976out:
977 return (ssize_t)rc;
978}
979
980static ssize_t
981smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
982 const unsigned char *path, const unsigned char *ea_name,
983 char *ea_data, size_t buf_size,
984 struct cifs_sb_info *cifs_sb)
985{
986 int rc;
987 __le16 *utf16_path;
f9793b6f
RS
988 struct kvec rsp_iov = {NULL, 0};
989 int buftype = CIFS_NO_BUFFER;
990 struct smb2_query_info_rsp *rsp;
991 struct smb2_file_full_ea_info *info = NULL;
95907fea
RS
992
993 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
994 if (!utf16_path)
995 return -ENOMEM;
996
f9793b6f
RS
997 rc = smb2_query_info_compound(xid, tcon, utf16_path,
998 FILE_READ_EA,
999 FILE_FULL_EA_INFORMATION,
1000 SMB2_O_INFO_FILE,
c4627e66
RS
1001 CIFSMaxBufSize -
1002 MAX_SMB2_CREATE_RESPONSE_SIZE -
1003 MAX_SMB2_CLOSE_RESPONSE_SIZE,
f9793b6f 1004 &rsp_iov, &buftype, cifs_sb);
95907fea 1005 if (rc) {
f9793b6f
RS
1006 /*
1007 * If ea_name is NULL (listxattr) and there are no EAs,
1008 * return 0 as it's not an error. Otherwise, the specified
1009 * ea_name was not found.
1010 */
1011 if (!ea_name && rc == -ENODATA)
1012 rc = 0;
1013 goto qeas_exit;
95907fea
RS
1014 }
1015
f9793b6f
RS
1016 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
1017 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
1018 le32_to_cpu(rsp->OutputBufferLength),
1019 &rsp_iov,
1020 sizeof(struct smb2_file_full_ea_info));
1021 if (rc)
1022 goto qeas_exit;
95907fea 1023
f9793b6f
RS
1024 info = (struct smb2_file_full_ea_info *)(
1025 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
1026 rc = move_smb2_ea_to_cifs(ea_data, buf_size, info,
1027 le32_to_cpu(rsp->OutputBufferLength), ea_name);
95907fea 1028
f9793b6f
RS
1029 qeas_exit:
1030 kfree(utf16_path);
1031 free_rsp_buf(buftype, rsp_iov.iov_base);
95907fea
RS
1032 return rc;
1033}
1034
5517554e
RS
1035
1036static int
1037smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
1038 const char *path, const char *ea_name, const void *ea_value,
1039 const __u16 ea_value_len, const struct nls_table *nls_codepage,
1040 struct cifs_sb_info *cifs_sb)
1041{
0967e545 1042 struct cifs_ses *ses = tcon->ses;
0967e545 1043 __le16 *utf16_path = NULL;
5517554e 1044 int ea_name_len = strlen(ea_name);
0967e545 1045 int flags = 0;
5517554e 1046 int len;
0967e545
RS
1047 struct smb_rqst rqst[3];
1048 int resp_buftype[3];
1049 struct kvec rsp_iov[3];
1050 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
1051 struct cifs_open_parms oparms;
1052 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1053 struct cifs_fid fid;
1054 struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
1055 unsigned int size[1];
1056 void *data[1];
1057 struct smb2_file_full_ea_info *ea = NULL;
1058 struct kvec close_iov[1];
1059 int rc;
1060
1061 if (smb3_encryption_required(tcon))
1062 flags |= CIFS_TRANSFORM_REQ;
5517554e
RS
1063
1064 if (ea_name_len > 255)
1065 return -EINVAL;
1066
1067 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1068 if (!utf16_path)
1069 return -ENOMEM;
1070
0967e545
RS
1071 memset(rqst, 0, sizeof(rqst));
1072 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1073 memset(rsp_iov, 0, sizeof(rsp_iov));
1074
21094641
RS
1075 if (ses->server->ops->query_all_EAs) {
1076 if (!ea_value) {
1077 rc = ses->server->ops->query_all_EAs(xid, tcon, path,
1078 ea_name, NULL, 0,
1079 cifs_sb);
1080 if (rc == -ENODATA)
1081 goto sea_exit;
1082 }
1083 }
1084
0967e545
RS
1085 /* Open */
1086 memset(&open_iov, 0, sizeof(open_iov));
1087 rqst[0].rq_iov = open_iov;
1088 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1089
1090 memset(&oparms, 0, sizeof(oparms));
5517554e
RS
1091 oparms.tcon = tcon;
1092 oparms.desired_access = FILE_WRITE_EA;
1093 oparms.disposition = FILE_OPEN;
5e19697b
SF
1094 if (backup_cred(cifs_sb))
1095 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1096 else
1097 oparms.create_options = 0;
5517554e
RS
1098 oparms.fid = &fid;
1099 oparms.reconnect = false;
1100
0967e545
RS
1101 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
1102 if (rc)
1103 goto sea_exit;
e77fe73c 1104 smb2_set_next_command(tcon, &rqst[0]);
0967e545
RS
1105
1106
1107 /* Set Info */
1108 memset(&si_iov, 0, sizeof(si_iov));
1109 rqst[1].rq_iov = si_iov;
1110 rqst[1].rq_nvec = 1;
5517554e
RS
1111
1112 len = sizeof(ea) + ea_name_len + ea_value_len + 1;
1113 ea = kzalloc(len, GFP_KERNEL);
1114 if (ea == NULL) {
0967e545
RS
1115 rc = -ENOMEM;
1116 goto sea_exit;
5517554e
RS
1117 }
1118
1119 ea->ea_name_length = ea_name_len;
1120 ea->ea_value_length = cpu_to_le16(ea_value_len);
1121 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
1122 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
1123
0967e545
RS
1124 size[0] = len;
1125 data[0] = ea;
1126
1127 rc = SMB2_set_info_init(tcon, &rqst[1], COMPOUND_FID,
1128 COMPOUND_FID, current->tgid,
1129 FILE_FULL_EA_INFORMATION,
1130 SMB2_O_INFO_FILE, 0, data, size);
e77fe73c 1131 smb2_set_next_command(tcon, &rqst[1]);
0967e545 1132 smb2_set_related(&rqst[1]);
6aa0c114 1133
5517554e 1134
0967e545
RS
1135 /* Close */
1136 memset(&close_iov, 0, sizeof(close_iov));
1137 rqst[2].rq_iov = close_iov;
1138 rqst[2].rq_nvec = 1;
1139 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
1140 smb2_set_related(&rqst[2]);
1141
1142 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1143 resp_buftype, rsp_iov);
1144
1145 sea_exit:
1146 kfree(ea);
1147 kfree(utf16_path);
1148 SMB2_open_free(&rqst[0]);
1149 SMB2_set_info_free(&rqst[1]);
1150 SMB2_close_free(&rqst[2]);
1151 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1152 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1153 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
5517554e
RS
1154 return rc;
1155}
1368f155 1156#endif
5517554e 1157
9094fad1
PS
1158static bool
1159smb2_can_echo(struct TCP_Server_Info *server)
1160{
1161 return server->echoes;
1162}
1163
d60622eb
PS
1164static void
1165smb2_clear_stats(struct cifs_tcon *tcon)
1166{
d60622eb
PS
1167 int i;
1168 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
1169 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
1170 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
1171 }
d60622eb
PS
1172}
1173
769ee6a4
SF
1174static void
1175smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
1176{
1177 seq_puts(m, "\n\tShare Capabilities:");
1178 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
1179 seq_puts(m, " DFS,");
1180 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
1181 seq_puts(m, " CONTINUOUS AVAILABILITY,");
1182 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
1183 seq_puts(m, " SCALEOUT,");
1184 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
1185 seq_puts(m, " CLUSTER,");
1186 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
1187 seq_puts(m, " ASYMMETRIC,");
1188 if (tcon->capabilities == 0)
1189 seq_puts(m, " None");
af6a12ea
SF
1190 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
1191 seq_puts(m, " Aligned,");
1192 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
1193 seq_puts(m, " Partition Aligned,");
1194 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
1195 seq_puts(m, " SSD,");
1196 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
1197 seq_puts(m, " TRIM-support,");
1198
769ee6a4 1199 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
e0386e44 1200 seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
af6a12ea
SF
1201 if (tcon->perf_sector_size)
1202 seq_printf(m, "\tOptimal sector size: 0x%x",
1203 tcon->perf_sector_size);
e0386e44 1204 seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
769ee6a4
SF
1205}
1206
d60622eb
PS
1207static void
1208smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
1209{
d60622eb
PS
1210 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
1211 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
1995d28f
SF
1212
1213 /*
1214 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
1215 * totals (requests sent) since those SMBs are per-session not per tcon
1216 */
52ce1ac4
SF
1217 seq_printf(m, "\nBytes read: %llu Bytes written: %llu",
1218 (long long)(tcon->bytes_read),
1219 (long long)(tcon->bytes_written));
fae8044c
SF
1220 seq_printf(m, "\nOpen files: %d total (local), %d open on server",
1221 atomic_read(&tcon->num_local_opens),
1222 atomic_read(&tcon->num_remote_opens));
1995d28f 1223 seq_printf(m, "\nTreeConnects: %d total %d failed",
d60622eb
PS
1224 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
1225 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
1995d28f 1226 seq_printf(m, "\nTreeDisconnects: %d total %d failed",
d60622eb
PS
1227 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
1228 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
1995d28f 1229 seq_printf(m, "\nCreates: %d total %d failed",
d60622eb
PS
1230 atomic_read(&sent[SMB2_CREATE_HE]),
1231 atomic_read(&failed[SMB2_CREATE_HE]));
1995d28f 1232 seq_printf(m, "\nCloses: %d total %d failed",
d60622eb
PS
1233 atomic_read(&sent[SMB2_CLOSE_HE]),
1234 atomic_read(&failed[SMB2_CLOSE_HE]));
1995d28f 1235 seq_printf(m, "\nFlushes: %d total %d failed",
d60622eb
PS
1236 atomic_read(&sent[SMB2_FLUSH_HE]),
1237 atomic_read(&failed[SMB2_FLUSH_HE]));
1995d28f 1238 seq_printf(m, "\nReads: %d total %d failed",
d60622eb
PS
1239 atomic_read(&sent[SMB2_READ_HE]),
1240 atomic_read(&failed[SMB2_READ_HE]));
1995d28f 1241 seq_printf(m, "\nWrites: %d total %d failed",
d60622eb
PS
1242 atomic_read(&sent[SMB2_WRITE_HE]),
1243 atomic_read(&failed[SMB2_WRITE_HE]));
1995d28f 1244 seq_printf(m, "\nLocks: %d total %d failed",
d60622eb
PS
1245 atomic_read(&sent[SMB2_LOCK_HE]),
1246 atomic_read(&failed[SMB2_LOCK_HE]));
1995d28f 1247 seq_printf(m, "\nIOCTLs: %d total %d failed",
d60622eb
PS
1248 atomic_read(&sent[SMB2_IOCTL_HE]),
1249 atomic_read(&failed[SMB2_IOCTL_HE]));
1995d28f 1250 seq_printf(m, "\nQueryDirectories: %d total %d failed",
d60622eb
PS
1251 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
1252 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
1995d28f 1253 seq_printf(m, "\nChangeNotifies: %d total %d failed",
d60622eb
PS
1254 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
1255 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
1995d28f 1256 seq_printf(m, "\nQueryInfos: %d total %d failed",
d60622eb
PS
1257 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
1258 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
1995d28f 1259 seq_printf(m, "\nSetInfos: %d total %d failed",
d60622eb
PS
1260 atomic_read(&sent[SMB2_SET_INFO_HE]),
1261 atomic_read(&failed[SMB2_SET_INFO_HE]));
1262 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
1263 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
1264 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
d60622eb
PS
1265}
1266
f0df737e
PS
1267static void
1268smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
1269{
2b0143b5 1270 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
53ef1016
PS
1271 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
1272
f0df737e
PS
1273 cfile->fid.persistent_fid = fid->persistent_fid;
1274 cfile->fid.volatile_fid = fid->volatile_fid;
dfe33f9a
SF
1275#ifdef CONFIG_CIFS_DEBUG2
1276 cfile->fid.mid = fid->mid;
1277#endif /* CIFS_DEBUG2 */
42873b0a
PS
1278 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
1279 &fid->purge_cache);
18cceb6a 1280 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
94f87371 1281 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
f0df737e
PS
1282}
1283
760ad0ca 1284static void
f0df737e
PS
1285smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
1286 struct cifs_fid *fid)
1287{
760ad0ca 1288 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
f0df737e
PS
1289}
1290
41c1358e
SF
1291static int
1292SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
1293 u64 persistent_fid, u64 volatile_fid,
1294 struct copychunk_ioctl *pcchunk)
1295{
1296 int rc;
1297 unsigned int ret_data_len;
1298 struct resume_key_req *res_key;
1299
1300 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
1301 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
1302 NULL, 0 /* no input */,
1303 (char **)&res_key, &ret_data_len);
1304
1305 if (rc) {
1306 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
1307 goto req_res_key_exit;
1308 }
1309 if (ret_data_len < sizeof(struct resume_key_req)) {
1310 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
1311 rc = -EINVAL;
1312 goto req_res_key_exit;
1313 }
1314 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
1315
1316req_res_key_exit:
1317 kfree(res_key);
1318 return rc;
1319}
1320
f5b05d62
RS
1321static int
1322smb2_ioctl_query_info(const unsigned int xid,
8d8b26e5
RS
1323 struct cifs_tcon *tcon,
1324 __le16 *path, int is_dir,
f5b05d62
RS
1325 unsigned long p)
1326{
f5b05d62
RS
1327 struct cifs_ses *ses = tcon->ses;
1328 char __user *arg = (char __user *)p;
1329 struct smb_query_info qi;
1330 struct smb_query_info __user *pqi;
1331 int rc = 0;
1332 int flags = 0;
f5778c39
RS
1333 struct smb2_query_info_rsp *qi_rsp = NULL;
1334 struct smb2_ioctl_rsp *io_rsp = NULL;
8d8b26e5
RS
1335 void *buffer = NULL;
1336 struct smb_rqst rqst[3];
1337 int resp_buftype[3];
1338 struct kvec rsp_iov[3];
1339 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
1340 struct cifs_open_parms oparms;
1341 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1342 struct cifs_fid fid;
1343 struct kvec qi_iov[1];
f5778c39 1344 struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
8d8b26e5
RS
1345 struct kvec close_iov[1];
1346
1347 memset(rqst, 0, sizeof(rqst));
1348 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1349 memset(rsp_iov, 0, sizeof(rsp_iov));
f5b05d62
RS
1350
1351 if (copy_from_user(&qi, arg, sizeof(struct smb_query_info)))
1352 return -EFAULT;
1353
1354 if (qi.output_buffer_length > 1024)
1355 return -EINVAL;
1356
1357 if (!ses || !(ses->server))
1358 return -EIO;
1359
1360 if (smb3_encryption_required(tcon))
1361 flags |= CIFS_TRANSFORM_REQ;
1362
1363 buffer = kmalloc(qi.output_buffer_length, GFP_KERNEL);
1364 if (buffer == NULL)
1365 return -ENOMEM;
1366
1367 if (copy_from_user(buffer, arg + sizeof(struct smb_query_info),
1368 qi.output_buffer_length)) {
8d8b26e5
RS
1369 rc = -EFAULT;
1370 goto iqinf_exit;
f5b05d62
RS
1371 }
1372
8d8b26e5
RS
1373 /* Open */
1374 memset(&open_iov, 0, sizeof(open_iov));
1375 rqst[0].rq_iov = open_iov;
1376 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1377
1378 memset(&oparms, 0, sizeof(oparms));
1379 oparms.tcon = tcon;
1380 oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
1381 oparms.disposition = FILE_OPEN;
1382 if (is_dir)
1383 oparms.create_options = CREATE_NOT_FILE;
1384 else
1385 oparms.create_options = CREATE_NOT_DIR;
1386 oparms.fid = &fid;
1387 oparms.reconnect = false;
1388
1389 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, path);
1390 if (rc)
1391 goto iqinf_exit;
e77fe73c 1392 smb2_set_next_command(tcon, &rqst[0]);
8d8b26e5
RS
1393
1394 /* Query */
31ba4331
SF
1395 if (qi.flags & PASSTHRU_FSCTL) {
1396 /* Can eventually relax perm check since server enforces too */
1397 if (!capable(CAP_SYS_ADMIN))
1398 rc = -EPERM;
f5778c39
RS
1399 else {
1400 memset(&io_iov, 0, sizeof(io_iov));
1401 rqst[1].rq_iov = io_iov;
1402 rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
1403
1404 rc = SMB2_ioctl_init(tcon, &rqst[1],
1405 COMPOUND_FID, COMPOUND_FID,
1406 qi.info_type, true, NULL,
1407 0);
1408 }
31ba4331
SF
1409 } else if (qi.flags == PASSTHRU_QUERY_INFO) {
1410 memset(&qi_iov, 0, sizeof(qi_iov));
1411 rqst[1].rq_iov = qi_iov;
1412 rqst[1].rq_nvec = 1;
1413
1414 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID,
1415 COMPOUND_FID, qi.file_info_class,
1416 qi.info_type, qi.additional_information,
f5b05d62
RS
1417 qi.input_buffer_length,
1418 qi.output_buffer_length, buffer);
31ba4331
SF
1419 } else { /* unknown flags */
1420 cifs_dbg(VFS, "invalid passthru query flags: 0x%x\n", qi.flags);
1421 rc = -EINVAL;
1422 }
1423
f5b05d62
RS
1424 if (rc)
1425 goto iqinf_exit;
e77fe73c 1426 smb2_set_next_command(tcon, &rqst[1]);
8d8b26e5
RS
1427 smb2_set_related(&rqst[1]);
1428
1429 /* Close */
1430 memset(&close_iov, 0, sizeof(close_iov));
1431 rqst[2].rq_iov = close_iov;
1432 rqst[2].rq_nvec = 1;
f5b05d62 1433
8d8b26e5 1434 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
f5b05d62
RS
1435 if (rc)
1436 goto iqinf_exit;
8d8b26e5 1437 smb2_set_related(&rqst[2]);
f5b05d62 1438
8d8b26e5
RS
1439 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1440 resp_buftype, rsp_iov);
1441 if (rc)
1442 goto iqinf_exit;
f5778c39
RS
1443 if (qi.flags & PASSTHRU_FSCTL) {
1444 pqi = (struct smb_query_info __user *)arg;
1445 io_rsp = (struct smb2_ioctl_rsp *)rsp_iov[1].iov_base;
1446 if (le32_to_cpu(io_rsp->OutputCount) < qi.input_buffer_length)
1447 qi.input_buffer_length = le32_to_cpu(io_rsp->OutputCount);
1448 if (copy_to_user(&pqi->input_buffer_length, &qi.input_buffer_length,
1449 sizeof(qi.input_buffer_length))) {
1450 rc = -EFAULT;
1451 goto iqinf_exit;
1452 }
1453 if (copy_to_user(pqi + 1, &io_rsp[1], qi.input_buffer_length)) {
1454 rc = -EFAULT;
1455 goto iqinf_exit;
1456 }
1457 } else {
1458 pqi = (struct smb_query_info __user *)arg;
1459 qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
1460 if (le32_to_cpu(qi_rsp->OutputBufferLength) < qi.input_buffer_length)
1461 qi.input_buffer_length = le32_to_cpu(qi_rsp->OutputBufferLength);
1462 if (copy_to_user(&pqi->input_buffer_length, &qi.input_buffer_length,
1463 sizeof(qi.input_buffer_length))) {
1464 rc = -EFAULT;
1465 goto iqinf_exit;
1466 }
1467 if (copy_to_user(pqi + 1, qi_rsp->Buffer, qi.input_buffer_length)) {
1468 rc = -EFAULT;
1469 goto iqinf_exit;
1470 }
f5b05d62
RS
1471 }
1472
1473 iqinf_exit:
8d8b26e5
RS
1474 kfree(buffer);
1475 SMB2_open_free(&rqst[0]);
f5778c39
RS
1476 if (qi.flags & PASSTHRU_FSCTL)
1477 SMB2_ioctl_free(&rqst[1]);
1478 else
1479 SMB2_query_info_free(&rqst[1]);
1480
8d8b26e5
RS
1481 SMB2_close_free(&rqst[2]);
1482 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1483 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1484 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
f5b05d62
RS
1485 return rc;
1486}
1487
620d8745 1488static ssize_t
312bbc59 1489smb2_copychunk_range(const unsigned int xid,
41c1358e
SF
1490 struct cifsFileInfo *srcfile,
1491 struct cifsFileInfo *trgtfile, u64 src_off,
1492 u64 len, u64 dest_off)
1493{
1494 int rc;
1495 unsigned int ret_data_len;
1496 struct copychunk_ioctl *pcchunk;
9bf0c9cd
SF
1497 struct copychunk_ioctl_rsp *retbuf = NULL;
1498 struct cifs_tcon *tcon;
1499 int chunks_copied = 0;
1500 bool chunk_sizes_updated = false;
620d8745 1501 ssize_t bytes_written, total_bytes_written = 0;
41c1358e
SF
1502
1503 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
1504
1505 if (pcchunk == NULL)
1506 return -ENOMEM;
1507
312bbc59 1508 cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
41c1358e
SF
1509 /* Request a key from the server to identify the source of the copy */
1510 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
1511 srcfile->fid.persistent_fid,
1512 srcfile->fid.volatile_fid, pcchunk);
1513
1514 /* Note: request_res_key sets res_key null only if rc !=0 */
1515 if (rc)
9bf0c9cd 1516 goto cchunk_out;
41c1358e
SF
1517
1518 /* For now array only one chunk long, will make more flexible later */
bc09d141 1519 pcchunk->ChunkCount = cpu_to_le32(1);
41c1358e 1520 pcchunk->Reserved = 0;
41c1358e
SF
1521 pcchunk->Reserved2 = 0;
1522
9bf0c9cd 1523 tcon = tlink_tcon(trgtfile->tlink);
41c1358e 1524
9bf0c9cd
SF
1525 while (len > 0) {
1526 pcchunk->SourceOffset = cpu_to_le64(src_off);
1527 pcchunk->TargetOffset = cpu_to_le64(dest_off);
1528 pcchunk->Length =
1529 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
41c1358e 1530
9bf0c9cd
SF
1531 /* Request server copy to target from src identified by key */
1532 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1533 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
63a83b86 1534 true /* is_fsctl */, (char *)pcchunk,
9bf0c9cd
SF
1535 sizeof(struct copychunk_ioctl), (char **)&retbuf,
1536 &ret_data_len);
1537 if (rc == 0) {
1538 if (ret_data_len !=
1539 sizeof(struct copychunk_ioctl_rsp)) {
1540 cifs_dbg(VFS, "invalid cchunk response size\n");
1541 rc = -EIO;
1542 goto cchunk_out;
1543 }
1544 if (retbuf->TotalBytesWritten == 0) {
1545 cifs_dbg(FYI, "no bytes copied\n");
1546 rc = -EIO;
1547 goto cchunk_out;
1548 }
1549 /*
1550 * Check if server claimed to write more than we asked
1551 */
1552 if (le32_to_cpu(retbuf->TotalBytesWritten) >
1553 le32_to_cpu(pcchunk->Length)) {
1554 cifs_dbg(VFS, "invalid copy chunk response\n");
1555 rc = -EIO;
1556 goto cchunk_out;
1557 }
1558 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
1559 cifs_dbg(VFS, "invalid num chunks written\n");
1560 rc = -EIO;
1561 goto cchunk_out;
1562 }
1563 chunks_copied++;
1564
620d8745
SP
1565 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
1566 src_off += bytes_written;
1567 dest_off += bytes_written;
1568 len -= bytes_written;
1569 total_bytes_written += bytes_written;
9bf0c9cd 1570
620d8745 1571 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
9bf0c9cd
SF
1572 le32_to_cpu(retbuf->ChunksWritten),
1573 le32_to_cpu(retbuf->ChunkBytesWritten),
620d8745 1574 bytes_written);
9bf0c9cd
SF
1575 } else if (rc == -EINVAL) {
1576 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
1577 goto cchunk_out;
1578
1579 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1580 le32_to_cpu(retbuf->ChunksWritten),
1581 le32_to_cpu(retbuf->ChunkBytesWritten),
1582 le32_to_cpu(retbuf->TotalBytesWritten));
1583
1584 /*
1585 * Check if this is the first request using these sizes,
1586 * (ie check if copy succeed once with original sizes
1587 * and check if the server gave us different sizes after
1588 * we already updated max sizes on previous request).
1589 * if not then why is the server returning an error now
1590 */
1591 if ((chunks_copied != 0) || chunk_sizes_updated)
1592 goto cchunk_out;
1593
1594 /* Check that server is not asking us to grow size */
1595 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
1596 tcon->max_bytes_chunk)
1597 tcon->max_bytes_chunk =
1598 le32_to_cpu(retbuf->ChunkBytesWritten);
1599 else
1600 goto cchunk_out; /* server gave us bogus size */
1601
1602 /* No need to change MaxChunks since already set to 1 */
1603 chunk_sizes_updated = true;
2477bc58
SP
1604 } else
1605 goto cchunk_out;
9bf0c9cd 1606 }
41c1358e 1607
9bf0c9cd 1608cchunk_out:
41c1358e 1609 kfree(pcchunk);
24df1483 1610 kfree(retbuf);
620d8745
SP
1611 if (rc)
1612 return rc;
1613 else
1614 return total_bytes_written;
41c1358e
SF
1615}
1616
7a5cfb19
PS
1617static int
1618smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1619 struct cifs_fid *fid)
1620{
1621 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1622}
1623
09a4707e
PS
1624static unsigned int
1625smb2_read_data_offset(char *buf)
1626{
1627 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1628 return rsp->DataOffset;
1629}
1630
1631static unsigned int
74dcf418 1632smb2_read_data_length(char *buf, bool in_remaining)
09a4707e
PS
1633{
1634 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
74dcf418
LL
1635
1636 if (in_remaining)
1637 return le32_to_cpu(rsp->DataRemaining);
1638
09a4707e
PS
1639 return le32_to_cpu(rsp->DataLength);
1640}
1641
d8e05039
PS
1642
1643static int
db8b631d 1644smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
d8e05039
PS
1645 struct cifs_io_parms *parms, unsigned int *bytes_read,
1646 char **buf, int *buf_type)
1647{
db8b631d
SF
1648 parms->persistent_fid = pfid->persistent_fid;
1649 parms->volatile_fid = pfid->volatile_fid;
d8e05039
PS
1650 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1651}
1652
009d3443 1653static int
db8b631d 1654smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
009d3443
PS
1655 struct cifs_io_parms *parms, unsigned int *written,
1656 struct kvec *iov, unsigned long nr_segs)
1657{
1658
db8b631d
SF
1659 parms->persistent_fid = pfid->persistent_fid;
1660 parms->volatile_fid = pfid->volatile_fid;
009d3443
PS
1661 return SMB2_write(xid, parms, written, iov, nr_segs);
1662}
1663
d43cc793
SF
1664/* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1665static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1666 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1667{
1668 struct cifsInodeInfo *cifsi;
1669 int rc;
1670
1671 cifsi = CIFS_I(inode);
1672
1673 /* if file already sparse don't bother setting sparse again */
1674 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1675 return true; /* already sparse */
1676
1677 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1678 return true; /* already not sparse */
1679
1680 /*
1681 * Can't check for sparse support on share the usual way via the
1682 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1683 * since Samba server doesn't set the flag on the share, yet
1684 * supports the set sparse FSCTL and returns sparse correctly
1685 * in the file attributes. If we fail setting sparse though we
1686 * mark that server does not support sparse files for this share
1687 * to avoid repeatedly sending the unsupported fsctl to server
1688 * if the file is repeatedly extended.
1689 */
1690 if (tcon->broken_sparse_sup)
1691 return false;
1692
1693 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1694 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
63a83b86 1695 true /* is_fctl */,
51146625 1696 &setsparse, 1, NULL, NULL);
d43cc793
SF
1697 if (rc) {
1698 tcon->broken_sparse_sup = true;
1699 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1700 return false;
1701 }
1702
1703 if (setsparse)
1704 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1705 else
1706 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1707
1708 return true;
1709}
1710
c839ff24
PS
1711static int
1712smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1713 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1714{
1715 __le64 eof = cpu_to_le64(size);
3d1a3745
SF
1716 struct inode *inode;
1717
1718 /*
1719 * If extending file more than one page make sparse. Many Linux fs
1720 * make files sparse by default when extending via ftruncate
1721 */
2b0143b5 1722 inode = d_inode(cfile->dentry);
3d1a3745
SF
1723
1724 if (!set_alloc && (size > inode->i_size + 8192)) {
3d1a3745 1725 __u8 set_sparse = 1;
d43cc793
SF
1726
1727 /* whether set sparse succeeds or not, extend the file */
1728 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
3d1a3745
SF
1729 }
1730
c839ff24 1731 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3764cbd1 1732 cfile->fid.volatile_fid, cfile->pid, &eof);
c839ff24
PS
1733}
1734
02b16665
SF
1735static int
1736smb2_duplicate_extents(const unsigned int xid,
1737 struct cifsFileInfo *srcfile,
1738 struct cifsFileInfo *trgtfile, u64 src_off,
1739 u64 len, u64 dest_off)
1740{
1741 int rc;
1742 unsigned int ret_data_len;
02b16665
SF
1743 struct duplicate_extents_to_file dup_ext_buf;
1744 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1745
1746 /* server fileays advertise duplicate extent support with this flag */
1747 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1748 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1749 return -EOPNOTSUPP;
1750
1751 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1752 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1753 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1754 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1755 dup_ext_buf.ByteCount = cpu_to_le64(len);
1756 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
1757 src_off, dest_off, len);
1758
1759 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1760 if (rc)
1761 goto duplicate_extents_out;
1762
1763 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1764 trgtfile->fid.volatile_fid,
1765 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
63a83b86 1766 true /* is_fsctl */,
51146625 1767 (char *)&dup_ext_buf,
02b16665 1768 sizeof(struct duplicate_extents_to_file),
24df1483 1769 NULL,
02b16665
SF
1770 &ret_data_len);
1771
1772 if (ret_data_len > 0)
1773 cifs_dbg(FYI, "non-zero response length in duplicate extents");
1774
1775duplicate_extents_out:
1776 return rc;
1777}
02b16665 1778
64a5cfa6
SF
1779static int
1780smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
1781 struct cifsFileInfo *cfile)
1782{
1783 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
1784 cfile->fid.volatile_fid);
1785}
1786
b3152e2c
SF
1787static int
1788smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
1789 struct cifsFileInfo *cfile)
1790{
1791 struct fsctl_set_integrity_information_req integr_info;
b3152e2c
SF
1792 unsigned int ret_data_len;
1793
1794 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
1795 integr_info.Flags = 0;
1796 integr_info.Reserved = 0;
1797
1798 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1799 cfile->fid.volatile_fid,
1800 FSCTL_SET_INTEGRITY_INFORMATION,
63a83b86 1801 true /* is_fsctl */,
51146625 1802 (char *)&integr_info,
b3152e2c 1803 sizeof(struct fsctl_set_integrity_information_req),
24df1483 1804 NULL,
b3152e2c
SF
1805 &ret_data_len);
1806
1807}
1808
e02789a5
SF
1809/* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
1810#define GMT_TOKEN_SIZE 50
1811
1812/*
1813 * Input buffer contains (empty) struct smb_snapshot array with size filled in
1814 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
1815 */
834170c8
SF
1816static int
1817smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
1818 struct cifsFileInfo *cfile, void __user *ioc_buf)
1819{
1820 char *retbuf = NULL;
1821 unsigned int ret_data_len = 0;
1822 int rc;
1823 struct smb_snapshot_array snapshot_in;
1824
1825 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1826 cfile->fid.volatile_fid,
1827 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
63a83b86 1828 true /* is_fsctl */,
51146625 1829 NULL, 0 /* no input data */,
834170c8
SF
1830 (char **)&retbuf,
1831 &ret_data_len);
1832 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
1833 rc, ret_data_len);
1834 if (rc)
1835 return rc;
1836
1837 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
1838 /* Fixup buffer */
1839 if (copy_from_user(&snapshot_in, ioc_buf,
1840 sizeof(struct smb_snapshot_array))) {
1841 rc = -EFAULT;
1842 kfree(retbuf);
1843 return rc;
1844 }
834170c8 1845
e02789a5
SF
1846 /*
1847 * Check for min size, ie not large enough to fit even one GMT
1848 * token (snapshot). On the first ioctl some users may pass in
1849 * smaller size (or zero) to simply get the size of the array
1850 * so the user space caller can allocate sufficient memory
1851 * and retry the ioctl again with larger array size sufficient
1852 * to hold all of the snapshot GMT tokens on the second try.
1853 */
1854 if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
1855 ret_data_len = sizeof(struct smb_snapshot_array);
1856
1857 /*
1858 * We return struct SRV_SNAPSHOT_ARRAY, followed by
1859 * the snapshot array (of 50 byte GMT tokens) each
1860 * representing an available previous version of the data
1861 */
1862 if (ret_data_len > (snapshot_in.snapshot_array_size +
1863 sizeof(struct smb_snapshot_array)))
1864 ret_data_len = snapshot_in.snapshot_array_size +
1865 sizeof(struct smb_snapshot_array);
834170c8
SF
1866
1867 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
1868 rc = -EFAULT;
1869 }
1870
1871 kfree(retbuf);
1872 return rc;
1873}
1874
d324f08d
PS
1875static int
1876smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
1877 const char *path, struct cifs_sb_info *cifs_sb,
1878 struct cifs_fid *fid, __u16 search_flags,
1879 struct cifs_search_info *srch_inf)
1880{
1881 __le16 *utf16_path;
1882 int rc;
2e44b288 1883 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047 1884 struct cifs_open_parms oparms;
d324f08d
PS
1885
1886 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1887 if (!utf16_path)
1888 return -ENOMEM;
1889
064f6047
PS
1890 oparms.tcon = tcon;
1891 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
1892 oparms.disposition = FILE_OPEN;
5e19697b
SF
1893 if (backup_cred(cifs_sb))
1894 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1895 else
1896 oparms.create_options = 0;
064f6047 1897 oparms.fid = fid;
9cbc0b73 1898 oparms.reconnect = false;
064f6047 1899
9d874c36 1900 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
d324f08d
PS
1901 kfree(utf16_path);
1902 if (rc) {
dcd87838 1903 cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
d324f08d
PS
1904 return rc;
1905 }
1906
1907 srch_inf->entries_in_buffer = 0;
0595751f 1908 srch_inf->index_of_last_entry = 2;
d324f08d 1909
064f6047
PS
1910 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
1911 fid->volatile_fid, 0, srch_inf);
d324f08d 1912 if (rc) {
dcd87838 1913 cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
064f6047 1914 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
d324f08d
PS
1915 }
1916 return rc;
1917}
1918
1919static int
1920smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
1921 struct cifs_fid *fid, __u16 search_flags,
1922 struct cifs_search_info *srch_inf)
1923{
1924 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
1925 fid->volatile_fid, 0, srch_inf);
1926}
1927
1928static int
1929smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1930 struct cifs_fid *fid)
1931{
1932 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1933}
1934
2e44b288
PS
1935/*
1936* If we negotiate SMB2 protocol and get STATUS_PENDING - update
1937* the number of credits and return true. Otherwise - return false.
1938*/
1939static bool
66265f13 1940smb2_is_status_pending(char *buf, struct TCP_Server_Info *server)
2e44b288 1941{
49f466bd 1942 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2e44b288 1943
31473fc4 1944 if (shdr->Status != STATUS_PENDING)
2e44b288
PS
1945 return false;
1946
66265f13 1947 if (shdr->CreditRequest) {
2e44b288 1948 spin_lock(&server->req_lock);
31473fc4 1949 server->credits += le16_to_cpu(shdr->CreditRequest);
2e44b288
PS
1950 spin_unlock(&server->req_lock);
1951 wake_up(&server->request_q);
1952 }
1953
1954 return true;
1955}
1956
511c54a2
PS
1957static bool
1958smb2_is_session_expired(char *buf)
1959{
49f466bd 1960 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
511c54a2 1961
d81243c6
MS
1962 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
1963 shdr->Status != STATUS_USER_SESSION_DELETED)
511c54a2
PS
1964 return false;
1965
e68a932b
SF
1966 trace_smb3_ses_expired(shdr->TreeId, shdr->SessionId,
1967 le16_to_cpu(shdr->Command),
1968 le64_to_cpu(shdr->MessageId));
d81243c6 1969 cifs_dbg(FYI, "Session expired or deleted\n");
e68a932b 1970
511c54a2
PS
1971 return true;
1972}
1973
983c88a4
PS
1974static int
1975smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1976 struct cifsInodeInfo *cinode)
1977{
0822f514
PS
1978 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1979 return SMB2_lease_break(0, tcon, cinode->lease_key,
1980 smb2_get_lease_state(cinode));
1981
983c88a4
PS
1982 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1983 fid->volatile_fid,
18cceb6a 1984 CIFS_CACHE_READ(cinode) ? 1 : 0);
983c88a4
PS
1985}
1986
c5a5f38f 1987void
730928c8
RS
1988smb2_set_related(struct smb_rqst *rqst)
1989{
1990 struct smb2_sync_hdr *shdr;
1991
1992 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
1993 shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
1994}
1995
1996char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
1997
c5a5f38f 1998void
e77fe73c 1999smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst)
730928c8
RS
2000{
2001 struct smb2_sync_hdr *shdr;
e77fe73c
RS
2002 struct cifs_ses *ses = tcon->ses;
2003 struct TCP_Server_Info *server = ses->server;
730928c8 2004 unsigned long len = smb_rqst_len(server, rqst);
e77fe73c 2005 int i, num_padding;
730928c8
RS
2006
2007 /* SMB headers in a compound are 8 byte aligned. */
e77fe73c
RS
2008
2009 /* No padding needed */
2010 if (!(len & 7))
2011 goto finished;
2012
2013 num_padding = 8 - (len & 7);
2014 if (!smb3_encryption_required(tcon)) {
2015 /*
2016 * If we do not have encryption then we can just add an extra
2017 * iov for the padding.
2018 */
2019 rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
2020 rqst->rq_iov[rqst->rq_nvec].iov_len = num_padding;
2021 rqst->rq_nvec++;
2022 len += num_padding;
2023 } else {
2024 /*
2025 * We can not add a small padding iov for the encryption case
2026 * because the encryption framework can not handle the padding
2027 * iovs.
2028 * We have to flatten this into a single buffer and add
2029 * the padding to it.
2030 */
2031 for (i = 1; i < rqst->rq_nvec; i++) {
2032 memcpy(rqst->rq_iov[0].iov_base +
2033 rqst->rq_iov[0].iov_len,
2034 rqst->rq_iov[i].iov_base,
2035 rqst->rq_iov[i].iov_len);
2036 rqst->rq_iov[0].iov_len += rqst->rq_iov[i].iov_len;
271b9c0c 2037 }
e77fe73c
RS
2038 memset(rqst->rq_iov[0].iov_base + rqst->rq_iov[0].iov_len,
2039 0, num_padding);
2040 rqst->rq_iov[0].iov_len += num_padding;
2041 len += num_padding;
2042 rqst->rq_nvec = 1;
730928c8
RS
2043 }
2044
e77fe73c 2045 finished:
730928c8
RS
2046 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
2047 shdr->NextCommand = cpu_to_le32(len);
2048}
2049
07d3b2e4
RS
2050/*
2051 * Passes the query info response back to the caller on success.
2052 * Caller need to free this with free_rsp_buf().
2053 */
f9793b6f 2054int
07d3b2e4
RS
2055smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
2056 __le16 *utf16_path, u32 desired_access,
2057 u32 class, u32 type, u32 output_len,
f9793b6f
RS
2058 struct kvec *rsp, int *buftype,
2059 struct cifs_sb_info *cifs_sb)
6fc05c25 2060{
07d3b2e4 2061 struct cifs_ses *ses = tcon->ses;
07d3b2e4 2062 int flags = 0;
730928c8
RS
2063 struct smb_rqst rqst[3];
2064 int resp_buftype[3];
2065 struct kvec rsp_iov[3];
4d8dfafc 2066 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
730928c8
RS
2067 struct kvec qi_iov[1];
2068 struct kvec close_iov[1];
6fc05c25 2069 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS
2070 struct cifs_open_parms oparms;
2071 struct cifs_fid fid;
730928c8
RS
2072 int rc;
2073
2074 if (smb3_encryption_required(tcon))
2075 flags |= CIFS_TRANSFORM_REQ;
2076
2077 memset(rqst, 0, sizeof(rqst));
c5a5f38f 2078 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
730928c8
RS
2079 memset(rsp_iov, 0, sizeof(rsp_iov));
2080
2081 memset(&open_iov, 0, sizeof(open_iov));
2082 rqst[0].rq_iov = open_iov;
4d8dfafc 2083 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
064f6047
PS
2084
2085 oparms.tcon = tcon;
07d3b2e4 2086 oparms.desired_access = desired_access;
064f6047 2087 oparms.disposition = FILE_OPEN;
f9793b6f
RS
2088 if (cifs_sb && backup_cred(cifs_sb))
2089 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2090 else
2091 oparms.create_options = 0;
064f6047 2092 oparms.fid = &fid;
9cbc0b73 2093 oparms.reconnect = false;
6fc05c25 2094
07d3b2e4 2095 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
6fc05c25 2096 if (rc)
07d3b2e4 2097 goto qic_exit;
e77fe73c 2098 smb2_set_next_command(tcon, &rqst[0]);
730928c8
RS
2099
2100 memset(&qi_iov, 0, sizeof(qi_iov));
2101 rqst[1].rq_iov = qi_iov;
2102 rqst[1].rq_nvec = 1;
2103
2104 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
07d3b2e4
RS
2105 class, type, 0,
2106 output_len, 0,
f5b05d62 2107 NULL);
730928c8 2108 if (rc)
07d3b2e4 2109 goto qic_exit;
e77fe73c 2110 smb2_set_next_command(tcon, &rqst[1]);
730928c8
RS
2111 smb2_set_related(&rqst[1]);
2112
2113 memset(&close_iov, 0, sizeof(close_iov));
2114 rqst[2].rq_iov = close_iov;
2115 rqst[2].rq_nvec = 1;
2116
2117 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
2118 if (rc)
07d3b2e4 2119 goto qic_exit;
730928c8
RS
2120 smb2_set_related(&rqst[2]);
2121
2122 rc = compound_send_recv(xid, ses, flags, 3, rqst,
2123 resp_buftype, rsp_iov);
f9793b6f
RS
2124 if (rc) {
2125 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
07d3b2e4 2126 goto qic_exit;
f9793b6f 2127 }
07d3b2e4
RS
2128 *rsp = rsp_iov[1];
2129 *buftype = resp_buftype[1];
2130
2131 qic_exit:
2132 SMB2_open_free(&rqst[0]);
2133 SMB2_query_info_free(&rqst[1]);
2134 SMB2_close_free(&rqst[2]);
2135 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2136 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
2137 return rc;
2138}
2139
2140static int
2141smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2142 struct kstatfs *buf)
2143{
2144 struct smb2_query_info_rsp *rsp;
2145 struct smb2_fs_full_size_info *info = NULL;
2146 __le16 utf16_path = 0; /* Null - open root of share */
2147 struct kvec rsp_iov = {NULL, 0};
2148 int buftype = CIFS_NO_BUFFER;
2149 int rc;
2150
2151
2152 rc = smb2_query_info_compound(xid, tcon, &utf16_path,
2153 FILE_READ_ATTRIBUTES,
2154 FS_FULL_SIZE_INFORMATION,
2155 SMB2_O_INFO_FILESYSTEM,
2156 sizeof(struct smb2_fs_full_size_info),
f9793b6f 2157 &rsp_iov, &buftype, NULL);
730928c8
RS
2158 if (rc)
2159 goto qfs_exit;
2160
07d3b2e4 2161 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
6fc05c25 2162 buf->f_type = SMB2_MAGIC_NUMBER;
730928c8
RS
2163 info = (struct smb2_fs_full_size_info *)(
2164 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
2165 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
2166 le32_to_cpu(rsp->OutputBufferLength),
07d3b2e4 2167 &rsp_iov,
730928c8
RS
2168 sizeof(struct smb2_fs_full_size_info));
2169 if (!rc)
2170 smb2_copy_fs_info_to_kstatfs(info, buf);
2171
2172qfs_exit:
07d3b2e4 2173 free_rsp_buf(buftype, rsp_iov.iov_base);
6fc05c25
PS
2174 return rc;
2175}
2176
2d304217
SF
2177static int
2178smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2179 struct kstatfs *buf)
2180{
2181 int rc;
2182 __le16 srch_path = 0; /* Null - open root of share */
2183 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2184 struct cifs_open_parms oparms;
2185 struct cifs_fid fid;
2186
2187 if (!tcon->posix_extensions)
2188 return smb2_queryfs(xid, tcon, buf);
2189
2190 oparms.tcon = tcon;
2191 oparms.desired_access = FILE_READ_ATTRIBUTES;
2192 oparms.disposition = FILE_OPEN;
2193 oparms.create_options = 0;
2194 oparms.fid = &fid;
2195 oparms.reconnect = false;
2196
2197 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
2198 if (rc)
2199 return rc;
2200
2201 rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
2202 fid.volatile_fid, buf);
2203 buf->f_type = SMB2_MAGIC_NUMBER;
2204 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2205 return rc;
2206}
2d304217 2207
027e8eec
PS
2208static bool
2209smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
2210{
2211 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
2212 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
2213}
2214
f7ba7fe6
PS
2215static int
2216smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
2217 __u64 length, __u32 type, int lock, int unlock, bool wait)
2218{
2219 if (unlock && !lock)
2220 type = SMB2_LOCKFLAG_UNLOCK;
2221 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
2222 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
2223 current->tgid, length, offset, type, wait);
2224}
2225
b8c32dbb
PS
2226static void
2227smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
2228{
2229 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
2230}
2231
2232static void
2233smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
2234{
2235 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
2236}
2237
2238static void
2239smb2_new_lease_key(struct cifs_fid *fid)
2240{
fa70b87c 2241 generate_random_uuid(fid->lease_key);
b8c32dbb
PS
2242}
2243
9d49640a
AA
2244static int
2245smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
2246 const char *search_name,
2247 struct dfs_info3_param **target_nodes,
2248 unsigned int *num_of_nodes,
2249 const struct nls_table *nls_codepage, int remap)
2250{
2251 int rc;
2252 __le16 *utf16_path = NULL;
2253 int utf16_path_len = 0;
2254 struct cifs_tcon *tcon;
2255 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
2256 struct get_dfs_referral_rsp *dfs_rsp = NULL;
2257 u32 dfs_req_size = 0, dfs_rsp_size = 0;
2258
2259 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
2260
2261 /*
63a83b86 2262 * Try to use the IPC tcon, otherwise just use any
9d49640a 2263 */
63a83b86
AA
2264 tcon = ses->tcon_ipc;
2265 if (tcon == NULL) {
2266 spin_lock(&cifs_tcp_ses_lock);
2267 tcon = list_first_entry_or_null(&ses->tcon_list,
2268 struct cifs_tcon,
2269 tcon_list);
2270 if (tcon)
2271 tcon->tc_count++;
2272 spin_unlock(&cifs_tcp_ses_lock);
2273 }
2274
2275 if (tcon == NULL) {
9d49640a
AA
2276 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
2277 ses);
2278 rc = -ENOTCONN;
2279 goto out;
2280 }
2281
2282 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
2283 &utf16_path_len,
2284 nls_codepage, remap);
2285 if (!utf16_path) {
2286 rc = -ENOMEM;
2287 goto out;
2288 }
2289
2290 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
2291 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
2292 if (!dfs_req) {
2293 rc = -ENOMEM;
2294 goto out;
2295 }
2296
2297 /* Highest DFS referral version understood */
2298 dfs_req->MaxReferralLevel = DFS_VERSION;
2299
2300 /* Path to resolve in an UTF-16 null-terminated string */
2301 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
2302
2303 do {
9d49640a
AA
2304 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
2305 FSCTL_DFS_GET_REFERRALS,
63a83b86 2306 true /* is_fsctl */,
9d49640a
AA
2307 (char *)dfs_req, dfs_req_size,
2308 (char **)&dfs_rsp, &dfs_rsp_size);
9d49640a
AA
2309 } while (rc == -EAGAIN);
2310
2311 if (rc) {
2564f2ff 2312 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
5702591f 2313 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
9d49640a
AA
2314 goto out;
2315 }
2316
2317 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
2318 num_of_nodes, target_nodes,
2319 nls_codepage, remap, search_name,
2320 true /* is_unicode */);
2321 if (rc) {
2322 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
2323 goto out;
2324 }
2325
2326 out:
63a83b86
AA
2327 if (tcon && !tcon->ipc) {
2328 /* ipc tcons are not refcounted */
9d49640a
AA
2329 spin_lock(&cifs_tcp_ses_lock);
2330 tcon->tc_count--;
2331 spin_unlock(&cifs_tcp_ses_lock);
2332 }
2333 kfree(utf16_path);
2334 kfree(dfs_req);
2335 kfree(dfs_rsp);
2336 return rc;
2337}
7893242e
PS
2338#define SMB2_SYMLINK_STRUCT_SIZE \
2339 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
2340
b42bf888
PS
2341static int
2342smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
2343 const char *full_path, char **target_path,
2344 struct cifs_sb_info *cifs_sb)
2345{
2346 int rc;
2347 __le16 *utf16_path;
2348 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2349 struct cifs_open_parms oparms;
2350 struct cifs_fid fid;
91cb74f5 2351 struct kvec err_iov = {NULL, 0};
9d874c36
RS
2352 struct smb2_err_rsp *err_buf = NULL;
2353 int resp_buftype;
b42bf888 2354 struct smb2_symlink_err_rsp *symlink;
7893242e
PS
2355 unsigned int sub_len;
2356 unsigned int sub_offset;
2357 unsigned int print_len;
2358 unsigned int print_offset;
b42bf888
PS
2359
2360 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
2361
2362 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
2363 if (!utf16_path)
2364 return -ENOMEM;
2365
2366 oparms.tcon = tcon;
2367 oparms.desired_access = FILE_READ_ATTRIBUTES;
2368 oparms.disposition = FILE_OPEN;
5e19697b
SF
2369 if (backup_cred(cifs_sb))
2370 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2371 else
2372 oparms.create_options = 0;
b42bf888
PS
2373 oparms.fid = &fid;
2374 oparms.reconnect = false;
2375
9d874c36
RS
2376 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_iov,
2377 &resp_buftype);
0d568cd3 2378 if (!rc || !err_iov.iov_base) {
9d874c36 2379 rc = -ENOENT;
ff361fda 2380 goto free_path;
b42bf888 2381 }
7893242e 2382
91cb74f5 2383 err_buf = err_iov.iov_base;
7893242e 2384 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1fc6ad2f 2385 err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) {
9d874c36
RS
2386 rc = -ENOENT;
2387 goto querty_exit;
7893242e
PS
2388 }
2389
b42bf888
PS
2390 /* open must fail on symlink - reset rc */
2391 rc = 0;
2392 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
2393 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
2394 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
7893242e
PS
2395 print_len = le16_to_cpu(symlink->PrintNameLength);
2396 print_offset = le16_to_cpu(symlink->PrintNameOffset);
2397
1fc6ad2f 2398 if (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
9d874c36
RS
2399 rc = -ENOENT;
2400 goto querty_exit;
7893242e
PS
2401 }
2402
1fc6ad2f
RS
2403 if (err_iov.iov_len <
2404 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
9d874c36
RS
2405 rc = -ENOENT;
2406 goto querty_exit;
7893242e
PS
2407 }
2408
b42bf888
PS
2409 *target_path = cifs_strndup_from_utf16(
2410 (char *)symlink->PathBuffer + sub_offset,
2411 sub_len, true, cifs_sb->local_nls);
2412 if (!(*target_path)) {
9d874c36
RS
2413 rc = -ENOMEM;
2414 goto querty_exit;
b42bf888
PS
2415 }
2416 convert_delimiter(*target_path, '/');
2417 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
9d874c36
RS
2418
2419 querty_exit:
2420 free_rsp_buf(resp_buftype, err_buf);
ff361fda 2421 free_path:
b42bf888
PS
2422 kfree(utf16_path);
2423 return rc;
2424}
2425
84908426 2426#ifdef CONFIG_CIFS_ACL
2f1afe25
SP
2427static struct cifs_ntsd *
2428get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
2429 const struct cifs_fid *cifsfid, u32 *pacllen)
2430{
2431 struct cifs_ntsd *pntsd = NULL;
2432 unsigned int xid;
2433 int rc = -EOPNOTSUPP;
2434 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2435
2436 if (IS_ERR(tlink))
2437 return ERR_CAST(tlink);
2438
2439 xid = get_xid();
2440 cifs_dbg(FYI, "trying to get acl\n");
2441
2442 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
2443 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
2444 free_xid(xid);
2445
2446 cifs_put_tlink(tlink);
2447
2448 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
2449 if (rc)
2450 return ERR_PTR(rc);
2451 return pntsd;
2452
2453}
2454
2455static struct cifs_ntsd *
2456get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
2457 const char *path, u32 *pacllen)
2458{
2459 struct cifs_ntsd *pntsd = NULL;
2460 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2461 unsigned int xid;
2462 int rc;
2463 struct cifs_tcon *tcon;
2464 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2465 struct cifs_fid fid;
2466 struct cifs_open_parms oparms;
2467 __le16 *utf16_path;
2468
2469 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
2470 if (IS_ERR(tlink))
2471 return ERR_CAST(tlink);
2472
2473 tcon = tlink_tcon(tlink);
2474 xid = get_xid();
2475
2476 if (backup_cred(cifs_sb))
709340a0 2477 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2f1afe25
SP
2478 else
2479 oparms.create_options = 0;
2480
2481 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
cfe89091
SF
2482 if (!utf16_path) {
2483 rc = -ENOMEM;
2484 free_xid(xid);
2485 return ERR_PTR(rc);
2486 }
2f1afe25
SP
2487
2488 oparms.tcon = tcon;
2489 oparms.desired_access = READ_CONTROL;
2490 oparms.disposition = FILE_OPEN;
2491 oparms.fid = &fid;
2492 oparms.reconnect = false;
2493
9d874c36 2494 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2f1afe25
SP
2495 kfree(utf16_path);
2496 if (!rc) {
2497 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
2498 fid.volatile_fid, (void **)&pntsd, pacllen);
2499 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2500 }
2501
2502 cifs_put_tlink(tlink);
2503 free_xid(xid);
2504
2505 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
2506 if (rc)
2507 return ERR_PTR(rc);
2508 return pntsd;
2509}
2510
366ed846
SP
2511#ifdef CONFIG_CIFS_ACL
2512static int
2513set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
2514 struct inode *inode, const char *path, int aclflag)
2515{
2516 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2517 unsigned int xid;
2518 int rc, access_flags = 0;
2519 struct cifs_tcon *tcon;
2520 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2521 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2522 struct cifs_fid fid;
2523 struct cifs_open_parms oparms;
2524 __le16 *utf16_path;
2525
2526 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
2527 if (IS_ERR(tlink))
2528 return PTR_ERR(tlink);
2529
2530 tcon = tlink_tcon(tlink);
2531 xid = get_xid();
2532
2533 if (backup_cred(cifs_sb))
2534 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2535 else
2536 oparms.create_options = 0;
2537
2538 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
2539 access_flags = WRITE_OWNER;
2540 else
2541 access_flags = WRITE_DAC;
2542
2543 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
cfe89091
SF
2544 if (!utf16_path) {
2545 rc = -ENOMEM;
2546 free_xid(xid);
2547 return rc;
2548 }
366ed846
SP
2549
2550 oparms.tcon = tcon;
2551 oparms.desired_access = access_flags;
2552 oparms.disposition = FILE_OPEN;
2553 oparms.path = path;
2554 oparms.fid = &fid;
2555 oparms.reconnect = false;
2556
9d874c36 2557 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
366ed846
SP
2558 kfree(utf16_path);
2559 if (!rc) {
2560 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
2561 fid.volatile_fid, pnntsd, acllen, aclflag);
2562 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2563 }
2564
2565 cifs_put_tlink(tlink);
2566 free_xid(xid);
2567 return rc;
2568}
2569#endif /* CIFS_ACL */
2570
2f1afe25
SP
2571/* Retrieve an ACL from the server */
2572static struct cifs_ntsd *
2573get_smb2_acl(struct cifs_sb_info *cifs_sb,
2574 struct inode *inode, const char *path,
2575 u32 *pacllen)
2576{
2577 struct cifs_ntsd *pntsd = NULL;
2578 struct cifsFileInfo *open_file = NULL;
2579
2580 if (inode)
2581 open_file = find_readable_file(CIFS_I(inode), true);
2582 if (!open_file)
2583 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
2584
2585 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
2586 cifsFileInfo_put(open_file);
2587 return pntsd;
2588}
84908426 2589#endif
2f1afe25 2590
30175628
SF
2591static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
2592 loff_t offset, loff_t len, bool keep_size)
2593{
72c419d9 2594 struct cifs_ses *ses = tcon->ses;
30175628
SF
2595 struct inode *inode;
2596 struct cifsInodeInfo *cifsi;
2597 struct cifsFileInfo *cfile = file->private_data;
2598 struct file_zero_data_information fsctl_buf;
72c419d9
RS
2599 struct smb_rqst rqst[2];
2600 int resp_buftype[2];
2601 struct kvec rsp_iov[2];
2602 struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
2603 struct kvec si_iov[1];
2604 unsigned int size[1];
2605 void *data[1];
30175628
SF
2606 long rc;
2607 unsigned int xid;
72c419d9
RS
2608 int num = 0, flags = 0;
2609 __le64 eof;
30175628
SF
2610
2611 xid = get_xid();
2612
2b0143b5 2613 inode = d_inode(cfile->dentry);
30175628
SF
2614 cifsi = CIFS_I(inode);
2615
779ede04
SF
2616 trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid,
2617 ses->Suid, offset, len);
2618
2619
30175628
SF
2620 /* if file not oplocked can't be sure whether asking to extend size */
2621 if (!CIFS_CACHE_READ(cifsi))
cfe89091
SF
2622 if (keep_size == false) {
2623 rc = -EOPNOTSUPP;
779ede04
SF
2624 trace_smb3_zero_err(xid, cfile->fid.persistent_fid,
2625 tcon->tid, ses->Suid, offset, len, rc);
cfe89091
SF
2626 free_xid(xid);
2627 return rc;
2628 }
30175628 2629
2bb93d24 2630 /*
30175628
SF
2631 * Must check if file sparse since fallocate -z (zero range) assumes
2632 * non-sparse allocation
2633 */
cfe89091
SF
2634 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
2635 rc = -EOPNOTSUPP;
779ede04
SF
2636 trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid,
2637 ses->Suid, offset, len, rc);
cfe89091
SF
2638 free_xid(xid);
2639 return rc;
2640 }
30175628 2641
30175628
SF
2642 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
2643
2644 fsctl_buf.FileOffset = cpu_to_le64(offset);
2645 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
2646
72c419d9
RS
2647 if (smb3_encryption_required(tcon))
2648 flags |= CIFS_TRANSFORM_REQ;
2649
2650 memset(rqst, 0, sizeof(rqst));
2651 resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
2652 memset(rsp_iov, 0, sizeof(rsp_iov));
2653
2654
2655 memset(&io_iov, 0, sizeof(io_iov));
2656 rqst[num].rq_iov = io_iov;
2657 rqst[num].rq_nvec = SMB2_IOCTL_IOV_SIZE;
2658 rc = SMB2_ioctl_init(tcon, &rqst[num++], cfile->fid.persistent_fid,
2659 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
2660 true /* is_fctl */, (char *)&fsctl_buf,
2661 sizeof(struct file_zero_data_information));
2662 if (rc)
2663 goto zero_range_exit;
2664
2665 /*
2666 * do we also need to change the size of the file?
2667 */
2668 if (keep_size == false && i_size_read(inode) < offset + len) {
2669 smb2_set_next_command(tcon, &rqst[0]);
2670
2671 memset(&si_iov, 0, sizeof(si_iov));
2672 rqst[num].rq_iov = si_iov;
2673 rqst[num].rq_nvec = 1;
2674
2675 eof = cpu_to_le64(offset + len);
2676 size[0] = 8; /* sizeof __le64 */
2677 data[0] = &eof;
2678
2679 rc = SMB2_set_info_init(tcon, &rqst[num++],
2680 cfile->fid.persistent_fid,
2681 cfile->fid.persistent_fid,
2682 current->tgid,
2683 FILE_END_OF_FILE_INFORMATION,
2684 SMB2_O_INFO_FILE, 0, data, size);
2685 smb2_set_related(&rqst[1]);
2686 }
2687
2688 rc = compound_send_recv(xid, ses, flags, num, rqst,
2689 resp_buftype, rsp_iov);
2690
2691 zero_range_exit:
2692 SMB2_ioctl_free(&rqst[0]);
2693 SMB2_set_info_free(&rqst[1]);
2694 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2695 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
30175628 2696 free_xid(xid);
779ede04
SF
2697 if (rc)
2698 trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid,
2699 ses->Suid, offset, len, rc);
2700 else
2701 trace_smb3_zero_done(xid, cfile->fid.persistent_fid, tcon->tid,
2702 ses->Suid, offset, len);
30175628
SF
2703 return rc;
2704}
2705
31742c5a
SF
2706static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
2707 loff_t offset, loff_t len)
2708{
2709 struct inode *inode;
2710 struct cifsInodeInfo *cifsi;
2711 struct cifsFileInfo *cfile = file->private_data;
2712 struct file_zero_data_information fsctl_buf;
2713 long rc;
2714 unsigned int xid;
2715 __u8 set_sparse = 1;
2716
2717 xid = get_xid();
2718
2b0143b5 2719 inode = d_inode(cfile->dentry);
31742c5a
SF
2720 cifsi = CIFS_I(inode);
2721
2722 /* Need to make file sparse, if not already, before freeing range. */
2723 /* Consider adding equivalent for compressed since it could also work */
cfe89091
SF
2724 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
2725 rc = -EOPNOTSUPP;
2726 free_xid(xid);
2727 return rc;
2728 }
31742c5a
SF
2729
2730 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
2731
2732 fsctl_buf.FileOffset = cpu_to_le64(offset);
2733 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
2734
2735 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2736 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
63a83b86 2737 true /* is_fctl */, (char *)&fsctl_buf,
31742c5a
SF
2738 sizeof(struct file_zero_data_information), NULL, NULL);
2739 free_xid(xid);
2740 return rc;
2741}
2742
9ccf3216
SF
2743static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
2744 loff_t off, loff_t len, bool keep_size)
2745{
2746 struct inode *inode;
2747 struct cifsInodeInfo *cifsi;
2748 struct cifsFileInfo *cfile = file->private_data;
2749 long rc = -EOPNOTSUPP;
2750 unsigned int xid;
f1699479 2751 __le64 eof;
9ccf3216
SF
2752
2753 xid = get_xid();
2754
2b0143b5 2755 inode = d_inode(cfile->dentry);
9ccf3216
SF
2756 cifsi = CIFS_I(inode);
2757
779ede04
SF
2758 trace_smb3_falloc_enter(xid, cfile->fid.persistent_fid, tcon->tid,
2759 tcon->ses->Suid, off, len);
9ccf3216
SF
2760 /* if file not oplocked can't be sure whether asking to extend size */
2761 if (!CIFS_CACHE_READ(cifsi))
cfe89091 2762 if (keep_size == false) {
779ede04
SF
2763 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
2764 tcon->tid, tcon->ses->Suid, off, len, rc);
cfe89091
SF
2765 free_xid(xid);
2766 return rc;
2767 }
9ccf3216
SF
2768
2769 /*
2770 * Files are non-sparse by default so falloc may be a no-op
2771 * Must check if file sparse. If not sparse, and not extending
2772 * then no need to do anything since file already allocated
2773 */
2774 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
2775 if (keep_size == true)
cfe89091 2776 rc = 0;
9ccf3216
SF
2777 /* check if extending file */
2778 else if (i_size_read(inode) >= off + len)
2779 /* not extending file and already not sparse */
cfe89091 2780 rc = 0;
9ccf3216
SF
2781 /* BB: in future add else clause to extend file */
2782 else
cfe89091 2783 rc = -EOPNOTSUPP;
779ede04
SF
2784 if (rc)
2785 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
2786 tcon->tid, tcon->ses->Suid, off, len, rc);
2787 else
2788 trace_smb3_falloc_done(xid, cfile->fid.persistent_fid,
2789 tcon->tid, tcon->ses->Suid, off, len);
cfe89091
SF
2790 free_xid(xid);
2791 return rc;
9ccf3216
SF
2792 }
2793
2794 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
2795 /*
2796 * Check if falloc starts within first few pages of file
2797 * and ends within a few pages of the end of file to
2798 * ensure that most of file is being forced to be
2799 * fallocated now. If so then setting whole file sparse
2800 * ie potentially making a few extra pages at the beginning
2801 * or end of the file non-sparse via set_sparse is harmless.
2802 */
cfe89091
SF
2803 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
2804 rc = -EOPNOTSUPP;
779ede04
SF
2805 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
2806 tcon->tid, tcon->ses->Suid, off, len, rc);
cfe89091
SF
2807 free_xid(xid);
2808 return rc;
2809 }
9ccf3216 2810
f1699479
RS
2811 smb2_set_sparse(xid, tcon, cfile, inode, false);
2812 rc = 0;
2813 } else {
2814 smb2_set_sparse(xid, tcon, cfile, inode, false);
2815 rc = 0;
2816 if (i_size_read(inode) < off + len) {
2817 eof = cpu_to_le64(off + len);
2818 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
2819 cfile->fid.volatile_fid, cfile->pid,
2820 &eof);
2821 }
9ccf3216 2822 }
9ccf3216 2823
779ede04
SF
2824 if (rc)
2825 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid,
2826 tcon->ses->Suid, off, len, rc);
2827 else
2828 trace_smb3_falloc_done(xid, cfile->fid.persistent_fid, tcon->tid,
2829 tcon->ses->Suid, off, len);
9ccf3216
SF
2830
2831 free_xid(xid);
2832 return rc;
2833}
2834
2835
31742c5a
SF
2836static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
2837 loff_t off, loff_t len)
2838{
2839 /* KEEP_SIZE already checked for by do_fallocate */
2840 if (mode & FALLOC_FL_PUNCH_HOLE)
2841 return smb3_punch_hole(file, tcon, off, len);
30175628
SF
2842 else if (mode & FALLOC_FL_ZERO_RANGE) {
2843 if (mode & FALLOC_FL_KEEP_SIZE)
2844 return smb3_zero_range(file, tcon, off, len, true);
2845 return smb3_zero_range(file, tcon, off, len, false);
9ccf3216
SF
2846 } else if (mode == FALLOC_FL_KEEP_SIZE)
2847 return smb3_simple_falloc(file, tcon, off, len, true);
2848 else if (mode == 0)
2849 return smb3_simple_falloc(file, tcon, off, len, false);
31742c5a
SF
2850
2851 return -EOPNOTSUPP;
2852}
2853
c11f1df5
SP
2854static void
2855smb2_downgrade_oplock(struct TCP_Server_Info *server,
2856 struct cifsInodeInfo *cinode, bool set_level2)
2857{
2858 if (set_level2)
2859 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
2860 0, NULL);
2861 else
2862 server->ops->set_oplock_level(cinode, 0, 0, NULL);
2863}
2864
7b9b9edb
PS
2865static void
2866smb21_downgrade_oplock(struct TCP_Server_Info *server,
2867 struct cifsInodeInfo *cinode, bool set_level2)
2868{
2869 server->ops->set_oplock_level(cinode,
2870 set_level2 ? SMB2_LEASE_READ_CACHING_HE :
2871 0, 0, NULL);
2872}
2873
53ef1016 2874static void
42873b0a
PS
2875smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2876 unsigned int epoch, bool *purge_cache)
53ef1016
PS
2877{
2878 oplock &= 0xFF;
2879 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2880 return;
2881 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
42873b0a 2882 cinode->oplock = CIFS_CACHE_RHW_FLG;
53ef1016
PS
2883 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
2884 &cinode->vfs_inode);
2885 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
42873b0a 2886 cinode->oplock = CIFS_CACHE_RW_FLG;
53ef1016
PS
2887 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
2888 &cinode->vfs_inode);
2889 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
2890 cinode->oplock = CIFS_CACHE_READ_FLG;
2891 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
2892 &cinode->vfs_inode);
2893 } else
2894 cinode->oplock = 0;
2895}
2896
2897static void
42873b0a
PS
2898smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2899 unsigned int epoch, bool *purge_cache)
53ef1016
PS
2900{
2901 char message[5] = {0};
2902
2903 oplock &= 0xFF;
2904 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2905 return;
2906
2907 cinode->oplock = 0;
2908 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
2909 cinode->oplock |= CIFS_CACHE_READ_FLG;
2910 strcat(message, "R");
2911 }
2912 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
2913 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
2914 strcat(message, "H");
2915 }
2916 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
2917 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
2918 strcat(message, "W");
2919 }
2920 if (!cinode->oplock)
2921 strcat(message, "None");
2922 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
2923 &cinode->vfs_inode);
2924}
2925
42873b0a
PS
2926static void
2927smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2928 unsigned int epoch, bool *purge_cache)
2929{
2930 unsigned int old_oplock = cinode->oplock;
2931
2932 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
2933
2934 if (purge_cache) {
2935 *purge_cache = false;
2936 if (old_oplock == CIFS_CACHE_READ_FLG) {
2937 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
2938 (epoch - cinode->epoch > 0))
2939 *purge_cache = true;
2940 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2941 (epoch - cinode->epoch > 1))
2942 *purge_cache = true;
2943 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2944 (epoch - cinode->epoch > 1))
2945 *purge_cache = true;
2946 else if (cinode->oplock == 0 &&
2947 (epoch - cinode->epoch > 0))
2948 *purge_cache = true;
2949 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
2950 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2951 (epoch - cinode->epoch > 0))
2952 *purge_cache = true;
2953 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2954 (epoch - cinode->epoch > 1))
2955 *purge_cache = true;
2956 }
2957 cinode->epoch = epoch;
2958 }
2959}
2960
53ef1016
PS
2961static bool
2962smb2_is_read_op(__u32 oplock)
2963{
2964 return oplock == SMB2_OPLOCK_LEVEL_II;
2965}
2966
2967static bool
2968smb21_is_read_op(__u32 oplock)
2969{
2970 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
2971 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
2972}
2973
f047390a
PS
2974static __le32
2975map_oplock_to_lease(u8 oplock)
2976{
2977 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
2978 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
2979 else if (oplock == SMB2_OPLOCK_LEVEL_II)
2980 return SMB2_LEASE_READ_CACHING;
2981 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
2982 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
2983 SMB2_LEASE_WRITE_CACHING;
2984 return 0;
2985}
2986
a41a28bd
PS
2987static char *
2988smb2_create_lease_buf(u8 *lease_key, u8 oplock)
2989{
2990 struct create_lease *buf;
2991
2992 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
2993 if (!buf)
2994 return NULL;
2995
729c0c9d 2996 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
f047390a 2997 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
a41a28bd
PS
2998
2999 buf->ccontext.DataOffset = cpu_to_le16(offsetof
3000 (struct create_lease, lcontext));
3001 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
3002 buf->ccontext.NameOffset = cpu_to_le16(offsetof
3003 (struct create_lease, Name));
3004 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 3005 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
a41a28bd
PS
3006 buf->Name[0] = 'R';
3007 buf->Name[1] = 'q';
3008 buf->Name[2] = 'L';
3009 buf->Name[3] = 's';
3010 return (char *)buf;
3011}
3012
f047390a
PS
3013static char *
3014smb3_create_lease_buf(u8 *lease_key, u8 oplock)
3015{
3016 struct create_lease_v2 *buf;
3017
3018 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
3019 if (!buf)
3020 return NULL;
3021
729c0c9d 3022 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
f047390a
PS
3023 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
3024
3025 buf->ccontext.DataOffset = cpu_to_le16(offsetof
3026 (struct create_lease_v2, lcontext));
3027 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
3028 buf->ccontext.NameOffset = cpu_to_le16(offsetof
3029 (struct create_lease_v2, Name));
3030 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 3031 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
f047390a
PS
3032 buf->Name[0] = 'R';
3033 buf->Name[1] = 'q';
3034 buf->Name[2] = 'L';
3035 buf->Name[3] = 's';
3036 return (char *)buf;
3037}
3038
b5c7cde3 3039static __u8
96164ab2 3040smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
b5c7cde3
PS
3041{
3042 struct create_lease *lc = (struct create_lease *)buf;
3043
42873b0a 3044 *epoch = 0; /* not used */
b5c7cde3
PS
3045 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
3046 return SMB2_OPLOCK_LEVEL_NOCHANGE;
3047 return le32_to_cpu(lc->lcontext.LeaseState);
3048}
3049
f047390a 3050static __u8
96164ab2 3051smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
f047390a
PS
3052{
3053 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
3054
42873b0a 3055 *epoch = le16_to_cpu(lc->lcontext.Epoch);
f047390a
PS
3056 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
3057 return SMB2_OPLOCK_LEVEL_NOCHANGE;
96164ab2 3058 if (lease_key)
729c0c9d 3059 memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
f047390a
PS
3060 return le32_to_cpu(lc->lcontext.LeaseState);
3061}
3062
7f6c5008
PS
3063static unsigned int
3064smb2_wp_retry_size(struct inode *inode)
3065{
3066 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
3067 SMB2_MAX_BUFFER_SIZE);
3068}
3069
52755808
PS
3070static bool
3071smb2_dir_needs_close(struct cifsFileInfo *cfile)
3072{
3073 return !cfile->invalidHandle;
3074}
3075
026e93dc 3076static void
977b6170
RS
3077fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
3078 struct smb_rqst *old_rq)
026e93dc
PS
3079{
3080 struct smb2_sync_hdr *shdr =
c713c877 3081 (struct smb2_sync_hdr *)old_rq->rq_iov[0].iov_base;
026e93dc
PS
3082
3083 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
3084 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
3085 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
3086 tr_hdr->Flags = cpu_to_le16(0x01);
3087 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
3088 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
026e93dc
PS
3089}
3090
262916bc
RS
3091/* We can not use the normal sg_set_buf() as we will sometimes pass a
3092 * stack object as buf.
3093 */
3094static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
3095 unsigned int buflen)
3096{
3097 sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
3098}
3099
b2c96de7
RS
3100/* Assumes the first rqst has a transform header as the first iov.
3101 * I.e.
3102 * rqst[0].rq_iov[0] is transform header
3103 * rqst[0].rq_iov[1+] data to be encrypted/decrypted
3104 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
977b6170 3105 */
026e93dc 3106static struct scatterlist *
b2c96de7 3107init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign)
026e93dc 3108{
b2c96de7 3109 unsigned int sg_len;
026e93dc
PS
3110 struct scatterlist *sg;
3111 unsigned int i;
3112 unsigned int j;
b2c96de7
RS
3113 unsigned int idx = 0;
3114 int skip;
3115
3116 sg_len = 1;
3117 for (i = 0; i < num_rqst; i++)
3118 sg_len += rqst[i].rq_nvec + rqst[i].rq_npages;
026e93dc
PS
3119
3120 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
3121 if (!sg)
3122 return NULL;
3123
3124 sg_init_table(sg, sg_len);
b2c96de7
RS
3125 for (i = 0; i < num_rqst; i++) {
3126 for (j = 0; j < rqst[i].rq_nvec; j++) {
3127 /*
3128 * The first rqst has a transform header where the
3129 * first 20 bytes are not part of the encrypted blob
3130 */
3131 skip = (i == 0) && (j == 0) ? 20 : 0;
3132 smb2_sg_set_buf(&sg[idx++],
3133 rqst[i].rq_iov[j].iov_base + skip,
3134 rqst[i].rq_iov[j].iov_len - skip);
e77fe73c 3135 }
b2c96de7
RS
3136
3137 for (j = 0; j < rqst[i].rq_npages; j++) {
3138 unsigned int len, offset;
d5f07fb3 3139
b2c96de7
RS
3140 rqst_page_get_length(&rqst[i], j, &len, &offset);
3141 sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset);
3142 }
026e93dc 3143 }
b2c96de7 3144 smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE);
026e93dc
PS
3145 return sg;
3146}
3147
61cfac6f
PS
3148static int
3149smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
3150{
3151 struct cifs_ses *ses;
3152 u8 *ses_enc_key;
3153
3154 spin_lock(&cifs_tcp_ses_lock);
3155 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
3156 if (ses->Suid != ses_id)
3157 continue;
3158 ses_enc_key = enc ? ses->smb3encryptionkey :
3159 ses->smb3decryptionkey;
3160 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
3161 spin_unlock(&cifs_tcp_ses_lock);
3162 return 0;
3163 }
3164 spin_unlock(&cifs_tcp_ses_lock);
3165
3166 return 1;
3167}
026e93dc 3168/*
c713c877
RS
3169 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
3170 * iov[0] - transform header (associate data),
3171 * iov[1-N] - SMB2 header and pages - data to encrypt.
3172 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
026e93dc
PS
3173 * untouched.
3174 */
3175static int
b2c96de7
RS
3176crypt_message(struct TCP_Server_Info *server, int num_rqst,
3177 struct smb_rqst *rqst, int enc)
026e93dc
PS
3178{
3179 struct smb2_transform_hdr *tr_hdr =
b2c96de7 3180 (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
1fc6ad2f 3181 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
026e93dc
PS
3182 int rc = 0;
3183 struct scatterlist *sg;
3184 u8 sign[SMB2_SIGNATURE_SIZE] = {};
61cfac6f 3185 u8 key[SMB3_SIGN_KEY_SIZE];
026e93dc
PS
3186 struct aead_request *req;
3187 char *iv;
3188 unsigned int iv_len;
a5186b85 3189 DECLARE_CRYPTO_WAIT(wait);
026e93dc
PS
3190 struct crypto_aead *tfm;
3191 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
3192
61cfac6f
PS
3193 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
3194 if (rc) {
3195 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
3196 enc ? "en" : "de");
026e93dc
PS
3197 return 0;
3198 }
3199
3200 rc = smb3_crypto_aead_allocate(server);
3201 if (rc) {
3202 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
3203 return rc;
3204 }
3205
3206 tfm = enc ? server->secmech.ccmaesencrypt :
3207 server->secmech.ccmaesdecrypt;
61cfac6f 3208 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
026e93dc
PS
3209 if (rc) {
3210 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
3211 return rc;
3212 }
3213
3214 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
3215 if (rc) {
3216 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
3217 return rc;
3218 }
3219
3220 req = aead_request_alloc(tfm, GFP_KERNEL);
3221 if (!req) {
3222 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
3223 return -ENOMEM;
3224 }
3225
3226 if (!enc) {
3227 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
3228 crypt_len += SMB2_SIGNATURE_SIZE;
3229 }
3230
b2c96de7 3231 sg = init_sg(num_rqst, rqst, sign);
026e93dc 3232 if (!sg) {
517a6e43
CJ
3233 cifs_dbg(VFS, "%s: Failed to init sg", __func__);
3234 rc = -ENOMEM;
026e93dc
PS
3235 goto free_req;
3236 }
3237
3238 iv_len = crypto_aead_ivsize(tfm);
3239 iv = kzalloc(iv_len, GFP_KERNEL);
3240 if (!iv) {
3241 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
517a6e43 3242 rc = -ENOMEM;
026e93dc
PS
3243 goto free_sg;
3244 }
3245 iv[0] = 3;
3246 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
3247
3248 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
3249 aead_request_set_ad(req, assoc_data_len);
3250
3251 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
a5186b85 3252 crypto_req_done, &wait);
026e93dc 3253
a5186b85
GBY
3254 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
3255 : crypto_aead_decrypt(req), &wait);
026e93dc
PS
3256
3257 if (!rc && enc)
3258 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
3259
3260 kfree(iv);
3261free_sg:
3262 kfree(sg);
3263free_req:
3264 kfree(req);
3265 return rc;
3266}
3267
b2c96de7
RS
3268void
3269smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
3270{
3271 int i, j;
3272
3273 for (i = 0; i < num_rqst; i++) {
3274 if (rqst[i].rq_pages) {
3275 for (j = rqst[i].rq_npages - 1; j >= 0; j--)
3276 put_page(rqst[i].rq_pages[j]);
3277 kfree(rqst[i].rq_pages);
3278 }
3279 }
3280}
3281
3282/*
3283 * This function will initialize new_rq and encrypt the content.
3284 * The first entry, new_rq[0], only contains a single iov which contains
3285 * a smb2_transform_hdr and is pre-allocated by the caller.
3286 * This function then populates new_rq[1+] with the content from olq_rq[0+].
3287 *
3288 * The end result is an array of smb_rqst structures where the first structure
3289 * only contains a single iov for the transform header which we then can pass
3290 * to crypt_message().
3291 *
3292 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
3293 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
3294 */
026e93dc 3295static int
b2c96de7
RS
3296smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
3297 struct smb_rqst *new_rq, struct smb_rqst *old_rq)
026e93dc 3298{
026e93dc 3299 struct page **pages;
b2c96de7
RS
3300 struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
3301 unsigned int npages;
3302 unsigned int orig_len = 0;
3303 int i, j;
026e93dc
PS
3304 int rc = -ENOMEM;
3305
b2c96de7
RS
3306 for (i = 1; i < num_rqst; i++) {
3307 npages = old_rq[i - 1].rq_npages;
3308 pages = kmalloc_array(npages, sizeof(struct page *),
3309 GFP_KERNEL);
3310 if (!pages)
3311 goto err_free;
3312
3313 new_rq[i].rq_pages = pages;
3314 new_rq[i].rq_npages = npages;
3315 new_rq[i].rq_offset = old_rq[i - 1].rq_offset;
3316 new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz;
3317 new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz;
3318 new_rq[i].rq_iov = old_rq[i - 1].rq_iov;
3319 new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec;
3320
3321 orig_len += smb_rqst_len(server, &old_rq[i - 1]);
3322
3323 for (j = 0; j < npages; j++) {
3324 pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
3325 if (!pages[j])
3326 goto err_free;
3327 }
026e93dc 3328
b2c96de7
RS
3329 /* copy pages form the old */
3330 for (j = 0; j < npages; j++) {
3331 char *dst, *src;
3332 unsigned int offset, len;
977b6170 3333
b2c96de7 3334 rqst_page_get_length(&new_rq[i], j, &len, &offset);
026e93dc 3335
b2c96de7
RS
3336 dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset;
3337 src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset;
026e93dc 3338
b2c96de7
RS
3339 memcpy(dst, src, len);
3340 kunmap(new_rq[i].rq_pages[j]);
3341 kunmap(old_rq[i - 1].rq_pages[j]);
3342 }
3343 }
35e2cc1b 3344
b2c96de7 3345 /* fill the 1st iov with a transform header */
977b6170 3346 fill_transform_hdr(tr_hdr, orig_len, old_rq);
d5f07fb3 3347
b2c96de7 3348 rc = crypt_message(server, num_rqst, new_rq, 1);
026e93dc
PS
3349 cifs_dbg(FYI, "encrypt message returned %d", rc);
3350 if (rc)
b2c96de7 3351 goto err_free;
026e93dc
PS
3352
3353 return rc;
3354
b2c96de7
RS
3355err_free:
3356 smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
026e93dc
PS
3357 return rc;
3358}
3359
4326ed2f
PS
3360static int
3361smb3_is_transform_hdr(void *buf)
3362{
3363 struct smb2_transform_hdr *trhdr = buf;
3364
3365 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
3366}
3367
3368static int
3369decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
3370 unsigned int buf_data_size, struct page **pages,
3371 unsigned int npages, unsigned int page_data_size)
3372{
c713c877 3373 struct kvec iov[2];
4326ed2f 3374 struct smb_rqst rqst = {NULL};
4326ed2f
PS
3375 int rc;
3376
c713c877
RS
3377 iov[0].iov_base = buf;
3378 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
3379 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
3380 iov[1].iov_len = buf_data_size;
4326ed2f
PS
3381
3382 rqst.rq_iov = iov;
c713c877 3383 rqst.rq_nvec = 2;
4326ed2f
PS
3384 rqst.rq_pages = pages;
3385 rqst.rq_npages = npages;
3386 rqst.rq_pagesz = PAGE_SIZE;
3387 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
3388
b2c96de7 3389 rc = crypt_message(server, 1, &rqst, 0);
4326ed2f
PS
3390 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
3391
3392 if (rc)
3393 return rc;
3394
c713c877 3395 memmove(buf, iov[1].iov_base, buf_data_size);
977b6170
RS
3396
3397 server->total_read = buf_data_size + page_data_size;
4326ed2f
PS
3398
3399 return rc;
3400}
3401
c42a6abe
PS
3402static int
3403read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
3404 unsigned int npages, unsigned int len)
3405{
3406 int i;
3407 int length;
3408
3409 for (i = 0; i < npages; i++) {
3410 struct page *page = pages[i];
3411 size_t n;
3412
3413 n = len;
3414 if (len >= PAGE_SIZE) {
3415 /* enough data to fill the page */
3416 n = PAGE_SIZE;
3417 len -= n;
3418 } else {
3419 zero_user(page, len, PAGE_SIZE - len);
3420 len = 0;
3421 }
1dbe3466 3422 length = cifs_read_page_from_socket(server, page, 0, n);
c42a6abe
PS
3423 if (length < 0)
3424 return length;
3425 server->total_read += length;
3426 }
3427
3428 return 0;
3429}
3430
3431static int
3432init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
3433 unsigned int cur_off, struct bio_vec **page_vec)
3434{
3435 struct bio_vec *bvec;
3436 int i;
3437
3438 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
3439 if (!bvec)
3440 return -ENOMEM;
3441
3442 for (i = 0; i < npages; i++) {
3443 bvec[i].bv_page = pages[i];
3444 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
3445 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
3446 data_size -= bvec[i].bv_len;
3447 }
3448
3449 if (data_size != 0) {
3450 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
3451 kfree(bvec);
3452 return -EIO;
3453 }
3454
3455 *page_vec = bvec;
3456 return 0;
3457}
3458
4326ed2f
PS
3459static int
3460handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
3461 char *buf, unsigned int buf_len, struct page **pages,
3462 unsigned int npages, unsigned int page_data_size)
3463{
3464 unsigned int data_offset;
3465 unsigned int data_len;
c42a6abe
PS
3466 unsigned int cur_off;
3467 unsigned int cur_page_idx;
3468 unsigned int pad_len;
4326ed2f 3469 struct cifs_readdata *rdata = mid->callback_data;
49f466bd 3470 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
4326ed2f
PS
3471 struct bio_vec *bvec = NULL;
3472 struct iov_iter iter;
3473 struct kvec iov;
3474 int length;
74dcf418 3475 bool use_rdma_mr = false;
4326ed2f
PS
3476
3477 if (shdr->Command != SMB2_READ) {
3478 cifs_dbg(VFS, "only big read responses are supported\n");
3479 return -ENOTSUPP;
3480 }
3481
511c54a2
PS
3482 if (server->ops->is_session_expired &&
3483 server->ops->is_session_expired(buf)) {
3484 cifs_reconnect(server);
3485 wake_up(&server->response_q);
3486 return -1;
3487 }
3488
4326ed2f 3489 if (server->ops->is_status_pending &&
66265f13 3490 server->ops->is_status_pending(buf, server))
4326ed2f
PS
3491 return -1;
3492
ec678eae
PS
3493 /* set up first two iov to get credits */
3494 rdata->iov[0].iov_base = buf;
bb1bccb6
PS
3495 rdata->iov[0].iov_len = 0;
3496 rdata->iov[1].iov_base = buf;
ec678eae 3497 rdata->iov[1].iov_len =
bb1bccb6 3498 min_t(unsigned int, buf_len, server->vals->read_rsp_size);
ec678eae
PS
3499 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
3500 rdata->iov[0].iov_base, rdata->iov[0].iov_len);
3501 cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
3502 rdata->iov[1].iov_base, rdata->iov[1].iov_len);
3503
3504 rdata->result = server->ops->map_error(buf, true);
4326ed2f
PS
3505 if (rdata->result != 0) {
3506 cifs_dbg(FYI, "%s: server returned error %d\n",
3507 __func__, rdata->result);
ec678eae
PS
3508 /* normal error on read response */
3509 dequeue_mid(mid, false);
4326ed2f
PS
3510 return 0;
3511 }
3512
1fc6ad2f 3513 data_offset = server->ops->read_data_offset(buf);
74dcf418
LL
3514#ifdef CONFIG_CIFS_SMB_DIRECT
3515 use_rdma_mr = rdata->mr;
3516#endif
3517 data_len = server->ops->read_data_length(buf, use_rdma_mr);
4326ed2f
PS
3518
3519 if (data_offset < server->vals->read_rsp_size) {
3520 /*
3521 * win2k8 sometimes sends an offset of 0 when the read
3522 * is beyond the EOF. Treat it as if the data starts just after
3523 * the header.
3524 */
3525 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
3526 __func__, data_offset);
3527 data_offset = server->vals->read_rsp_size;
3528 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
3529 /* data_offset is beyond the end of smallbuf */
3530 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
3531 __func__, data_offset);
3532 rdata->result = -EIO;
3533 dequeue_mid(mid, rdata->result);
3534 return 0;
3535 }
3536
c42a6abe
PS
3537 pad_len = data_offset - server->vals->read_rsp_size;
3538
4326ed2f
PS
3539 if (buf_len <= data_offset) {
3540 /* read response payload is in pages */
c42a6abe
PS
3541 cur_page_idx = pad_len / PAGE_SIZE;
3542 cur_off = pad_len % PAGE_SIZE;
3543
3544 if (cur_page_idx != 0) {
3545 /* data offset is beyond the 1st page of response */
3546 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
3547 __func__, data_offset);
3548 rdata->result = -EIO;
3549 dequeue_mid(mid, rdata->result);
3550 return 0;
3551 }
3552
3553 if (data_len > page_data_size - pad_len) {
3554 /* data_len is corrupt -- discard frame */
3555 rdata->result = -EIO;
3556 dequeue_mid(mid, rdata->result);
3557 return 0;
3558 }
3559
3560 rdata->result = init_read_bvec(pages, npages, page_data_size,
3561 cur_off, &bvec);
3562 if (rdata->result != 0) {
3563 dequeue_mid(mid, rdata->result);
3564 return 0;
3565 }
3566
aa563d7b 3567 iov_iter_bvec(&iter, WRITE, bvec, npages, data_len);
4326ed2f
PS
3568 } else if (buf_len >= data_offset + data_len) {
3569 /* read response payload is in buf */
3570 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
3571 iov.iov_base = buf + data_offset;
3572 iov.iov_len = data_len;
aa563d7b 3573 iov_iter_kvec(&iter, WRITE, &iov, 1, data_len);
4326ed2f
PS
3574 } else {
3575 /* read response payload cannot be in both buf and pages */
3576 WARN_ONCE(1, "buf can not contain only a part of read data");
3577 rdata->result = -EIO;
3578 dequeue_mid(mid, rdata->result);
3579 return 0;
3580 }
3581
4326ed2f
PS
3582 length = rdata->copy_into_pages(server, rdata, &iter);
3583
3584 kfree(bvec);
3585
3586 if (length < 0)
3587 return length;
3588
3589 dequeue_mid(mid, false);
3590 return length;
3591}
3592
c42a6abe
PS
3593static int
3594receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
3595{
3596 char *buf = server->smallbuf;
3597 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
3598 unsigned int npages;
3599 struct page **pages;
3600 unsigned int len;
1fc6ad2f 3601 unsigned int buflen = server->pdu_size;
c42a6abe
PS
3602 int rc;
3603 int i = 0;
3604
1fc6ad2f 3605 len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
c42a6abe
PS
3606 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
3607
3608 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
3609 if (rc < 0)
3610 return rc;
3611 server->total_read += rc;
3612
1fc6ad2f 3613 len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
93012bf9 3614 server->vals->read_rsp_size;
c42a6abe
PS
3615 npages = DIV_ROUND_UP(len, PAGE_SIZE);
3616
3617 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
3618 if (!pages) {
3619 rc = -ENOMEM;
3620 goto discard_data;
3621 }
3622
3623 for (; i < npages; i++) {
3624 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
3625 if (!pages[i]) {
3626 rc = -ENOMEM;
3627 goto discard_data;
3628 }
3629 }
3630
3631 /* read read data into pages */
3632 rc = read_data_into_pages(server, pages, npages, len);
3633 if (rc)
3634 goto free_pages;
3635
350be257 3636 rc = cifs_discard_remaining_data(server);
c42a6abe
PS
3637 if (rc)
3638 goto free_pages;
3639
1fc6ad2f 3640 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
c42a6abe
PS
3641 pages, npages, len);
3642 if (rc)
3643 goto free_pages;
3644
3645 *mid = smb2_find_mid(server, buf);
3646 if (*mid == NULL)
3647 cifs_dbg(FYI, "mid not found\n");
3648 else {
3649 cifs_dbg(FYI, "mid found\n");
3650 (*mid)->decrypted = true;
3651 rc = handle_read_data(server, *mid, buf,
3652 server->vals->read_rsp_size,
3653 pages, npages, len);
3654 }
3655
3656free_pages:
3657 for (i = i - 1; i >= 0; i--)
3658 put_page(pages[i]);
3659 kfree(pages);
3660 return rc;
3661discard_data:
350be257 3662 cifs_discard_remaining_data(server);
c42a6abe
PS
3663 goto free_pages;
3664}
3665
4326ed2f
PS
3666static int
3667receive_encrypted_standard(struct TCP_Server_Info *server,
b24df3e3
RS
3668 struct mid_q_entry **mids, char **bufs,
3669 int *num_mids)
4326ed2f 3670{
b24df3e3 3671 int ret, length;
4326ed2f 3672 char *buf = server->smallbuf;
b24df3e3
RS
3673 char *tmpbuf;
3674 struct smb2_sync_hdr *shdr;
2e96467d 3675 unsigned int pdu_length = server->pdu_size;
4326ed2f
PS
3676 unsigned int buf_size;
3677 struct mid_q_entry *mid_entry;
b24df3e3
RS
3678 int next_is_large;
3679 char *next_buffer = NULL;
3680
3681 *num_mids = 0;
4326ed2f
PS
3682
3683 /* switch to large buffer if too big for a small one */
1fc6ad2f 3684 if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
4326ed2f
PS
3685 server->large_buf = true;
3686 memcpy(server->bigbuf, buf, server->total_read);
3687 buf = server->bigbuf;
3688 }
3689
3690 /* now read the rest */
3691 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
1fc6ad2f 3692 pdu_length - HEADER_SIZE(server) + 1);
4326ed2f
PS
3693 if (length < 0)
3694 return length;
3695 server->total_read += length;
3696
1fc6ad2f 3697 buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
4326ed2f
PS
3698 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
3699 if (length)
3700 return length;
3701
b24df3e3
RS
3702 next_is_large = server->large_buf;
3703 one_more:
3704 shdr = (struct smb2_sync_hdr *)buf;
3705 if (shdr->NextCommand) {
3706 if (next_is_large) {
3707 tmpbuf = server->bigbuf;
3708 next_buffer = (char *)cifs_buf_get();
3709 } else {
3710 tmpbuf = server->smallbuf;
3711 next_buffer = (char *)cifs_small_buf_get();
3712 }
3713 memcpy(next_buffer,
3714 tmpbuf + le32_to_cpu(shdr->NextCommand),
3715 pdu_length - le32_to_cpu(shdr->NextCommand));
3716 }
3717
4326ed2f
PS
3718 mid_entry = smb2_find_mid(server, buf);
3719 if (mid_entry == NULL)
3720 cifs_dbg(FYI, "mid not found\n");
3721 else {
3722 cifs_dbg(FYI, "mid found\n");
3723 mid_entry->decrypted = true;
b24df3e3 3724 mid_entry->resp_buf_size = server->pdu_size;
4326ed2f
PS
3725 }
3726
b24df3e3
RS
3727 if (*num_mids >= MAX_COMPOUND) {
3728 cifs_dbg(VFS, "too many PDUs in compound\n");
3729 return -1;
3730 }
3731 bufs[*num_mids] = buf;
3732 mids[(*num_mids)++] = mid_entry;
4326ed2f
PS
3733
3734 if (mid_entry && mid_entry->handle)
b24df3e3
RS
3735 ret = mid_entry->handle(server, mid_entry);
3736 else
3737 ret = cifs_handle_standard(server, mid_entry);
3738
3739 if (ret == 0 && shdr->NextCommand) {
3740 pdu_length -= le32_to_cpu(shdr->NextCommand);
3741 server->large_buf = next_is_large;
3742 if (next_is_large)
3743 server->bigbuf = next_buffer;
3744 else
3745 server->smallbuf = next_buffer;
3746
3747 buf += le32_to_cpu(shdr->NextCommand);
3748 goto one_more;
3749 }
4326ed2f 3750
b24df3e3 3751 return ret;
4326ed2f
PS
3752}
3753
3754static int
b24df3e3
RS
3755smb3_receive_transform(struct TCP_Server_Info *server,
3756 struct mid_q_entry **mids, char **bufs, int *num_mids)
4326ed2f
PS
3757{
3758 char *buf = server->smallbuf;
2e96467d 3759 unsigned int pdu_length = server->pdu_size;
4326ed2f
PS
3760 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
3761 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
3762
1fc6ad2f 3763 if (pdu_length < sizeof(struct smb2_transform_hdr) +
4326ed2f
PS
3764 sizeof(struct smb2_sync_hdr)) {
3765 cifs_dbg(VFS, "Transform message is too small (%u)\n",
3766 pdu_length);
3767 cifs_reconnect(server);
3768 wake_up(&server->response_q);
3769 return -ECONNABORTED;
3770 }
3771
1fc6ad2f 3772 if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
4326ed2f
PS
3773 cifs_dbg(VFS, "Transform message is broken\n");
3774 cifs_reconnect(server);
3775 wake_up(&server->response_q);
3776 return -ECONNABORTED;
3777 }
3778
b24df3e3 3779 /* TODO: add support for compounds containing READ. */
6d2f84ee
PA
3780 if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) {
3781 *num_mids = 1;
b24df3e3 3782 return receive_encrypted_read(server, &mids[0]);
6d2f84ee 3783 }
4326ed2f 3784
b24df3e3 3785 return receive_encrypted_standard(server, mids, bufs, num_mids);
4326ed2f
PS
3786}
3787
3788int
3789smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
3790{
3791 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
3792
1fc6ad2f 3793 return handle_read_data(server, mid, buf, server->pdu_size,
4326ed2f
PS
3794 NULL, 0, 0);
3795}
3796
8ce79ec3
RS
3797static int
3798smb2_next_header(char *buf)
3799{
3800 struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf;
3801 struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
3802
3803 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM)
3804 return sizeof(struct smb2_transform_hdr) +
3805 le32_to_cpu(t_hdr->OriginalMessageSize);
3806
3807 return le32_to_cpu(hdr->NextCommand);
3808}
3809
c847dccf
AA
3810static int
3811smb2_make_node(unsigned int xid, struct inode *inode,
3812 struct dentry *dentry, struct cifs_tcon *tcon,
3813 char *full_path, umode_t mode, dev_t dev)
3814{
3815 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
3816 int rc = -EPERM;
3817 int create_options = CREATE_NOT_DIR | CREATE_OPTION_SPECIAL;
3818 FILE_ALL_INFO *buf = NULL;
3819 struct cifs_io_parms io_parms;
3820 __u32 oplock = 0;
3821 struct cifs_fid fid;
3822 struct cifs_open_parms oparms;
3823 unsigned int bytes_written;
3824 struct win_dev *pdev;
3825 struct kvec iov[2];
3826
3827 /*
3828 * Check if mounted with mount parm 'sfu' mount parm.
3829 * SFU emulation should work with all servers, but only
3830 * supports block and char device (no socket & fifo),
3831 * and was used by default in earlier versions of Windows
3832 */
3833 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
3834 goto out;
3835
3836 /*
3837 * TODO: Add ability to create instead via reparse point. Windows (e.g.
3838 * their current NFS server) uses this approach to expose special files
3839 * over SMB2/SMB3 and Samba will do this with SMB3.1.1 POSIX Extensions
3840 */
3841
3842 if (!S_ISCHR(mode) && !S_ISBLK(mode))
3843 goto out;
3844
3845 cifs_dbg(FYI, "sfu compat create special file\n");
3846
3847 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
3848 if (buf == NULL) {
3849 rc = -ENOMEM;
3850 goto out;
3851 }
3852
3853 if (backup_cred(cifs_sb))
3854 create_options |= CREATE_OPEN_BACKUP_INTENT;
3855
3856 oparms.tcon = tcon;
3857 oparms.cifs_sb = cifs_sb;
3858 oparms.desired_access = GENERIC_WRITE;
3859 oparms.create_options = create_options;
3860 oparms.disposition = FILE_CREATE;
3861 oparms.path = full_path;
3862 oparms.fid = &fid;
3863 oparms.reconnect = false;
3864
3865 if (tcon->ses->server->oplocks)
3866 oplock = REQ_OPLOCK;
3867 else
3868 oplock = 0;
3869 rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf);
3870 if (rc)
3871 goto out;
3872
3873 /*
3874 * BB Do not bother to decode buf since no local inode yet to put
3875 * timestamps in, but we can reuse it safely.
3876 */
3877
3878 pdev = (struct win_dev *)buf;
3879 io_parms.pid = current->tgid;
3880 io_parms.tcon = tcon;
3881 io_parms.offset = 0;
3882 io_parms.length = sizeof(struct win_dev);
3883 iov[1].iov_base = buf;
3884 iov[1].iov_len = sizeof(struct win_dev);
3885 if (S_ISCHR(mode)) {
3886 memcpy(pdev->type, "IntxCHR", 8);
3887 pdev->major = cpu_to_le64(MAJOR(dev));
3888 pdev->minor = cpu_to_le64(MINOR(dev));
3889 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
3890 &bytes_written, iov, 1);
3891 } else if (S_ISBLK(mode)) {
3892 memcpy(pdev->type, "IntxBLK", 8);
3893 pdev->major = cpu_to_le64(MAJOR(dev));
3894 pdev->minor = cpu_to_le64(MINOR(dev));
3895 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
3896 &bytes_written, iov, 1);
3897 }
3898 tcon->ses->server->ops->close(xid, tcon, &fid);
3899 d_drop(dentry);
3900
3901 /* FIXME: add code here to set EAs */
3902out:
3903 kfree(buf);
3904 return rc;
3905}
3906
3907
53ef1016 3908struct smb_version_operations smb20_operations = {
027e8eec 3909 .compare_fids = smb2_compare_fids,
2dc7e1c0 3910 .setup_request = smb2_setup_request,
c95b8eed 3911 .setup_async_request = smb2_setup_async_request,
2dc7e1c0 3912 .check_receive = smb2_check_receive,
28ea5290
PS
3913 .add_credits = smb2_add_credits,
3914 .set_credits = smb2_set_credits,
3915 .get_credits_field = smb2_get_credits_field,
3916 .get_credits = smb2_get_credits,
cb7e9eab 3917 .wait_mtu_credits = cifs_wait_mtu_credits,
2dc7e1c0 3918 .get_next_mid = smb2_get_next_mid,
c781af7e 3919 .revert_current_mid = smb2_revert_current_mid,
09a4707e
PS
3920 .read_data_offset = smb2_read_data_offset,
3921 .read_data_length = smb2_read_data_length,
3922 .map_error = map_smb2_to_linux_error,
093b2bda
PS
3923 .find_mid = smb2_find_mid,
3924 .check_message = smb2_check_message,
3925 .dump_detail = smb2_dump_detail,
d60622eb
PS
3926 .clear_stats = smb2_clear_stats,
3927 .print_stats = smb2_print_stats,
983c88a4 3928 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3929 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 3930 .downgrade_oplock = smb2_downgrade_oplock,
ec2e4523
PS
3931 .need_neg = smb2_need_neg,
3932 .negotiate = smb2_negotiate,
3a3bab50
PS
3933 .negotiate_wsize = smb2_negotiate_wsize,
3934 .negotiate_rsize = smb2_negotiate_rsize,
5478f9ba
PS
3935 .sess_setup = SMB2_sess_setup,
3936 .logoff = SMB2_logoff,
faaf946a
PS
3937 .tree_connect = SMB2_tcon,
3938 .tree_disconnect = SMB2_tdis,
34f62640 3939 .qfs_tcon = smb2_qfs_tcon,
2503a0db 3940 .is_path_accessible = smb2_is_path_accessible,
9094fad1
PS
3941 .can_echo = smb2_can_echo,
3942 .echo = SMB2_echo,
be4cb9e3
PS
3943 .query_path_info = smb2_query_path_info,
3944 .get_srv_inum = smb2_get_srv_inum,
b7546bc5 3945 .query_file_info = smb2_query_file_info,
c839ff24
PS
3946 .set_path_size = smb2_set_path_size,
3947 .set_file_size = smb2_set_file_size,
1feeaac7 3948 .set_file_info = smb2_set_file_info,
64a5cfa6 3949 .set_compression = smb2_set_compression,
a0e73183
PS
3950 .mkdir = smb2_mkdir,
3951 .mkdir_setinfo = smb2_mkdir_setinfo,
1a500f01 3952 .rmdir = smb2_rmdir,
cbe6f439 3953 .unlink = smb2_unlink,
35143eb5 3954 .rename = smb2_rename_path,
568798cc 3955 .create_hardlink = smb2_create_hardlink,
b42bf888 3956 .query_symlink = smb2_query_symlink,
5b23c97d
SP
3957 .query_mf_symlink = smb3_query_mf_symlink,
3958 .create_mf_symlink = smb3_create_mf_symlink,
f0df737e
PS
3959 .open = smb2_open_file,
3960 .set_fid = smb2_set_fid,
3961 .close = smb2_close_file,
7a5cfb19 3962 .flush = smb2_flush_file,
09a4707e 3963 .async_readv = smb2_async_readv,
33319141 3964 .async_writev = smb2_async_writev,
d8e05039 3965 .sync_read = smb2_sync_read,
009d3443 3966 .sync_write = smb2_sync_write,
d324f08d
PS
3967 .query_dir_first = smb2_query_dir_first,
3968 .query_dir_next = smb2_query_dir_next,
3969 .close_dir = smb2_close_dir,
3970 .calc_smb_size = smb2_calc_size,
2e44b288 3971 .is_status_pending = smb2_is_status_pending,
511c54a2 3972 .is_session_expired = smb2_is_session_expired,
983c88a4 3973 .oplock_response = smb2_oplock_response,
6fc05c25 3974 .queryfs = smb2_queryfs,
f7ba7fe6
PS
3975 .mand_lock = smb2_mand_lock,
3976 .mand_unlock_range = smb2_unlock_range,
b140799a 3977 .push_mand_locks = smb2_push_mandatory_locks,
b8c32dbb
PS
3978 .get_lease_key = smb2_get_lease_key,
3979 .set_lease_key = smb2_set_lease_key,
3980 .new_lease_key = smb2_new_lease_key,
38107d45 3981 .calc_signature = smb2_calc_signature,
53ef1016
PS
3982 .is_read_op = smb2_is_read_op,
3983 .set_oplock_level = smb2_set_oplock_level,
a41a28bd 3984 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 3985 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 3986 .copychunk_range = smb2_copychunk_range,
7f6c5008 3987 .wp_retry_size = smb2_wp_retry_size,
52755808 3988 .dir_needs_close = smb2_dir_needs_close,
9d49640a 3989 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3990 .select_sectype = smb2_select_sectype,
95907fea
RS
3991#ifdef CONFIG_CIFS_XATTR
3992 .query_all_EAs = smb2_query_eas,
5517554e 3993 .set_EA = smb2_set_ea,
95907fea 3994#endif /* CIFS_XATTR */
2f1afe25
SP
3995#ifdef CONFIG_CIFS_ACL
3996 .get_acl = get_smb2_acl,
3997 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 3998 .set_acl = set_smb2_acl,
2f1afe25 3999#endif /* CIFS_ACL */
8ce79ec3 4000 .next_header = smb2_next_header,
f5b05d62 4001 .ioctl_query_info = smb2_ioctl_query_info,
c847dccf 4002 .make_node = smb2_make_node,
38107d45
SF
4003};
4004
53ef1016
PS
4005struct smb_version_operations smb21_operations = {
4006 .compare_fids = smb2_compare_fids,
4007 .setup_request = smb2_setup_request,
4008 .setup_async_request = smb2_setup_async_request,
4009 .check_receive = smb2_check_receive,
4010 .add_credits = smb2_add_credits,
4011 .set_credits = smb2_set_credits,
4012 .get_credits_field = smb2_get_credits_field,
4013 .get_credits = smb2_get_credits,
cb7e9eab 4014 .wait_mtu_credits = smb2_wait_mtu_credits,
9a1c67e8 4015 .adjust_credits = smb2_adjust_credits,
53ef1016 4016 .get_next_mid = smb2_get_next_mid,
c781af7e 4017 .revert_current_mid = smb2_revert_current_mid,
53ef1016
PS
4018 .read_data_offset = smb2_read_data_offset,
4019 .read_data_length = smb2_read_data_length,
4020 .map_error = map_smb2_to_linux_error,
4021 .find_mid = smb2_find_mid,
4022 .check_message = smb2_check_message,
4023 .dump_detail = smb2_dump_detail,
4024 .clear_stats = smb2_clear_stats,
4025 .print_stats = smb2_print_stats,
4026 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 4027 .handle_cancelled_mid = smb2_handle_cancelled_mid,
7b9b9edb 4028 .downgrade_oplock = smb21_downgrade_oplock,
53ef1016
PS
4029 .need_neg = smb2_need_neg,
4030 .negotiate = smb2_negotiate,
4031 .negotiate_wsize = smb2_negotiate_wsize,
4032 .negotiate_rsize = smb2_negotiate_rsize,
4033 .sess_setup = SMB2_sess_setup,
4034 .logoff = SMB2_logoff,
4035 .tree_connect = SMB2_tcon,
4036 .tree_disconnect = SMB2_tdis,
34f62640 4037 .qfs_tcon = smb2_qfs_tcon,
53ef1016
PS
4038 .is_path_accessible = smb2_is_path_accessible,
4039 .can_echo = smb2_can_echo,
4040 .echo = SMB2_echo,
4041 .query_path_info = smb2_query_path_info,
4042 .get_srv_inum = smb2_get_srv_inum,
4043 .query_file_info = smb2_query_file_info,
4044 .set_path_size = smb2_set_path_size,
4045 .set_file_size = smb2_set_file_size,
4046 .set_file_info = smb2_set_file_info,
64a5cfa6 4047 .set_compression = smb2_set_compression,
53ef1016
PS
4048 .mkdir = smb2_mkdir,
4049 .mkdir_setinfo = smb2_mkdir_setinfo,
4050 .rmdir = smb2_rmdir,
4051 .unlink = smb2_unlink,
4052 .rename = smb2_rename_path,
4053 .create_hardlink = smb2_create_hardlink,
4054 .query_symlink = smb2_query_symlink,
c22870ea 4055 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 4056 .create_mf_symlink = smb3_create_mf_symlink,
53ef1016
PS
4057 .open = smb2_open_file,
4058 .set_fid = smb2_set_fid,
4059 .close = smb2_close_file,
4060 .flush = smb2_flush_file,
4061 .async_readv = smb2_async_readv,
4062 .async_writev = smb2_async_writev,
4063 .sync_read = smb2_sync_read,
4064 .sync_write = smb2_sync_write,
4065 .query_dir_first = smb2_query_dir_first,
4066 .query_dir_next = smb2_query_dir_next,
4067 .close_dir = smb2_close_dir,
4068 .calc_smb_size = smb2_calc_size,
4069 .is_status_pending = smb2_is_status_pending,
511c54a2 4070 .is_session_expired = smb2_is_session_expired,
53ef1016
PS
4071 .oplock_response = smb2_oplock_response,
4072 .queryfs = smb2_queryfs,
4073 .mand_lock = smb2_mand_lock,
4074 .mand_unlock_range = smb2_unlock_range,
4075 .push_mand_locks = smb2_push_mandatory_locks,
4076 .get_lease_key = smb2_get_lease_key,
4077 .set_lease_key = smb2_set_lease_key,
4078 .new_lease_key = smb2_new_lease_key,
4079 .calc_signature = smb2_calc_signature,
4080 .is_read_op = smb21_is_read_op,
4081 .set_oplock_level = smb21_set_oplock_level,
a41a28bd 4082 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 4083 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 4084 .copychunk_range = smb2_copychunk_range,
7f6c5008 4085 .wp_retry_size = smb2_wp_retry_size,
52755808 4086 .dir_needs_close = smb2_dir_needs_close,
834170c8 4087 .enum_snapshots = smb3_enum_snapshots,
9d49640a 4088 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 4089 .select_sectype = smb2_select_sectype,
95907fea
RS
4090#ifdef CONFIG_CIFS_XATTR
4091 .query_all_EAs = smb2_query_eas,
5517554e 4092 .set_EA = smb2_set_ea,
95907fea 4093#endif /* CIFS_XATTR */
2f1afe25
SP
4094#ifdef CONFIG_CIFS_ACL
4095 .get_acl = get_smb2_acl,
4096 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 4097 .set_acl = set_smb2_acl,
2f1afe25 4098#endif /* CIFS_ACL */
8ce79ec3 4099 .next_header = smb2_next_header,
f5b05d62 4100 .ioctl_query_info = smb2_ioctl_query_info,
c847dccf 4101 .make_node = smb2_make_node,
53ef1016 4102};
38107d45
SF
4103
4104struct smb_version_operations smb30_operations = {
4105 .compare_fids = smb2_compare_fids,
4106 .setup_request = smb2_setup_request,
4107 .setup_async_request = smb2_setup_async_request,
4108 .check_receive = smb2_check_receive,
4109 .add_credits = smb2_add_credits,
4110 .set_credits = smb2_set_credits,
4111 .get_credits_field = smb2_get_credits_field,
4112 .get_credits = smb2_get_credits,
cb7e9eab 4113 .wait_mtu_credits = smb2_wait_mtu_credits,
9a1c67e8 4114 .adjust_credits = smb2_adjust_credits,
38107d45 4115 .get_next_mid = smb2_get_next_mid,
c781af7e 4116 .revert_current_mid = smb2_revert_current_mid,
38107d45
SF
4117 .read_data_offset = smb2_read_data_offset,
4118 .read_data_length = smb2_read_data_length,
4119 .map_error = map_smb2_to_linux_error,
4120 .find_mid = smb2_find_mid,
4121 .check_message = smb2_check_message,
4122 .dump_detail = smb2_dump_detail,
4123 .clear_stats = smb2_clear_stats,
4124 .print_stats = smb2_print_stats,
769ee6a4 4125 .dump_share_caps = smb2_dump_share_caps,
38107d45 4126 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 4127 .handle_cancelled_mid = smb2_handle_cancelled_mid,
7b9b9edb 4128 .downgrade_oplock = smb21_downgrade_oplock,
38107d45
SF
4129 .need_neg = smb2_need_neg,
4130 .negotiate = smb2_negotiate,
3d621230
SF
4131 .negotiate_wsize = smb3_negotiate_wsize,
4132 .negotiate_rsize = smb3_negotiate_rsize,
38107d45
SF
4133 .sess_setup = SMB2_sess_setup,
4134 .logoff = SMB2_logoff,
4135 .tree_connect = SMB2_tcon,
4136 .tree_disconnect = SMB2_tdis,
af6a12ea 4137 .qfs_tcon = smb3_qfs_tcon,
38107d45
SF
4138 .is_path_accessible = smb2_is_path_accessible,
4139 .can_echo = smb2_can_echo,
4140 .echo = SMB2_echo,
4141 .query_path_info = smb2_query_path_info,
4142 .get_srv_inum = smb2_get_srv_inum,
4143 .query_file_info = smb2_query_file_info,
4144 .set_path_size = smb2_set_path_size,
4145 .set_file_size = smb2_set_file_size,
4146 .set_file_info = smb2_set_file_info,
64a5cfa6 4147 .set_compression = smb2_set_compression,
38107d45
SF
4148 .mkdir = smb2_mkdir,
4149 .mkdir_setinfo = smb2_mkdir_setinfo,
4150 .rmdir = smb2_rmdir,
4151 .unlink = smb2_unlink,
4152 .rename = smb2_rename_path,
4153 .create_hardlink = smb2_create_hardlink,
b42bf888 4154 .query_symlink = smb2_query_symlink,
c22870ea 4155 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 4156 .create_mf_symlink = smb3_create_mf_symlink,
38107d45
SF
4157 .open = smb2_open_file,
4158 .set_fid = smb2_set_fid,
4159 .close = smb2_close_file,
4160 .flush = smb2_flush_file,
4161 .async_readv = smb2_async_readv,
4162 .async_writev = smb2_async_writev,
4163 .sync_read = smb2_sync_read,
4164 .sync_write = smb2_sync_write,
4165 .query_dir_first = smb2_query_dir_first,
4166 .query_dir_next = smb2_query_dir_next,
4167 .close_dir = smb2_close_dir,
4168 .calc_smb_size = smb2_calc_size,
4169 .is_status_pending = smb2_is_status_pending,
511c54a2 4170 .is_session_expired = smb2_is_session_expired,
38107d45
SF
4171 .oplock_response = smb2_oplock_response,
4172 .queryfs = smb2_queryfs,
4173 .mand_lock = smb2_mand_lock,
4174 .mand_unlock_range = smb2_unlock_range,
4175 .push_mand_locks = smb2_push_mandatory_locks,
4176 .get_lease_key = smb2_get_lease_key,
4177 .set_lease_key = smb2_set_lease_key,
4178 .new_lease_key = smb2_new_lease_key,
373512ec 4179 .generate_signingkey = generate_smb30signingkey,
38107d45 4180 .calc_signature = smb3_calc_signature,
b3152e2c 4181 .set_integrity = smb3_set_integrity,
53ef1016 4182 .is_read_op = smb21_is_read_op,
42873b0a 4183 .set_oplock_level = smb3_set_oplock_level,
f047390a
PS
4184 .create_lease_buf = smb3_create_lease_buf,
4185 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 4186 .copychunk_range = smb2_copychunk_range,
ca9e7a1c 4187 .duplicate_extents = smb2_duplicate_extents,
ff1c038a 4188 .validate_negotiate = smb3_validate_negotiate,
7f6c5008 4189 .wp_retry_size = smb2_wp_retry_size,
52755808 4190 .dir_needs_close = smb2_dir_needs_close,
31742c5a 4191 .fallocate = smb3_fallocate,
834170c8 4192 .enum_snapshots = smb3_enum_snapshots,
026e93dc 4193 .init_transform_rq = smb3_init_transform_rq,
4326ed2f
PS
4194 .is_transform_hdr = smb3_is_transform_hdr,
4195 .receive_transform = smb3_receive_transform,
9d49640a 4196 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 4197 .select_sectype = smb2_select_sectype,
95907fea
RS
4198#ifdef CONFIG_CIFS_XATTR
4199 .query_all_EAs = smb2_query_eas,
5517554e 4200 .set_EA = smb2_set_ea,
95907fea 4201#endif /* CIFS_XATTR */
2f1afe25
SP
4202#ifdef CONFIG_CIFS_ACL
4203 .get_acl = get_smb2_acl,
4204 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 4205 .set_acl = set_smb2_acl,
2f1afe25 4206#endif /* CIFS_ACL */
8ce79ec3 4207 .next_header = smb2_next_header,
f5b05d62 4208 .ioctl_query_info = smb2_ioctl_query_info,
c847dccf 4209 .make_node = smb2_make_node,
1080ef75
SF
4210};
4211
aab1893d
SF
4212struct smb_version_operations smb311_operations = {
4213 .compare_fids = smb2_compare_fids,
4214 .setup_request = smb2_setup_request,
4215 .setup_async_request = smb2_setup_async_request,
4216 .check_receive = smb2_check_receive,
4217 .add_credits = smb2_add_credits,
4218 .set_credits = smb2_set_credits,
4219 .get_credits_field = smb2_get_credits_field,
4220 .get_credits = smb2_get_credits,
4221 .wait_mtu_credits = smb2_wait_mtu_credits,
9a1c67e8 4222 .adjust_credits = smb2_adjust_credits,
aab1893d 4223 .get_next_mid = smb2_get_next_mid,
c781af7e 4224 .revert_current_mid = smb2_revert_current_mid,
aab1893d
SF
4225 .read_data_offset = smb2_read_data_offset,
4226 .read_data_length = smb2_read_data_length,
4227 .map_error = map_smb2_to_linux_error,
4228 .find_mid = smb2_find_mid,
4229 .check_message = smb2_check_message,
4230 .dump_detail = smb2_dump_detail,
4231 .clear_stats = smb2_clear_stats,
4232 .print_stats = smb2_print_stats,
4233 .dump_share_caps = smb2_dump_share_caps,
4234 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 4235 .handle_cancelled_mid = smb2_handle_cancelled_mid,
7b9b9edb 4236 .downgrade_oplock = smb21_downgrade_oplock,
aab1893d
SF
4237 .need_neg = smb2_need_neg,
4238 .negotiate = smb2_negotiate,
3d621230
SF
4239 .negotiate_wsize = smb3_negotiate_wsize,
4240 .negotiate_rsize = smb3_negotiate_rsize,
aab1893d
SF
4241 .sess_setup = SMB2_sess_setup,
4242 .logoff = SMB2_logoff,
4243 .tree_connect = SMB2_tcon,
4244 .tree_disconnect = SMB2_tdis,
4245 .qfs_tcon = smb3_qfs_tcon,
4246 .is_path_accessible = smb2_is_path_accessible,
4247 .can_echo = smb2_can_echo,
4248 .echo = SMB2_echo,
4249 .query_path_info = smb2_query_path_info,
4250 .get_srv_inum = smb2_get_srv_inum,
4251 .query_file_info = smb2_query_file_info,
4252 .set_path_size = smb2_set_path_size,
4253 .set_file_size = smb2_set_file_size,
4254 .set_file_info = smb2_set_file_info,
4255 .set_compression = smb2_set_compression,
4256 .mkdir = smb2_mkdir,
4257 .mkdir_setinfo = smb2_mkdir_setinfo,
bea851b8 4258 .posix_mkdir = smb311_posix_mkdir,
aab1893d
SF
4259 .rmdir = smb2_rmdir,
4260 .unlink = smb2_unlink,
4261 .rename = smb2_rename_path,
4262 .create_hardlink = smb2_create_hardlink,
4263 .query_symlink = smb2_query_symlink,
4264 .query_mf_symlink = smb3_query_mf_symlink,
4265 .create_mf_symlink = smb3_create_mf_symlink,
4266 .open = smb2_open_file,
4267 .set_fid = smb2_set_fid,
4268 .close = smb2_close_file,
4269 .flush = smb2_flush_file,
4270 .async_readv = smb2_async_readv,
4271 .async_writev = smb2_async_writev,
4272 .sync_read = smb2_sync_read,
4273 .sync_write = smb2_sync_write,
4274 .query_dir_first = smb2_query_dir_first,
4275 .query_dir_next = smb2_query_dir_next,
4276 .close_dir = smb2_close_dir,
4277 .calc_smb_size = smb2_calc_size,
4278 .is_status_pending = smb2_is_status_pending,
511c54a2 4279 .is_session_expired = smb2_is_session_expired,
aab1893d 4280 .oplock_response = smb2_oplock_response,
2d304217 4281 .queryfs = smb311_queryfs,
aab1893d
SF
4282 .mand_lock = smb2_mand_lock,
4283 .mand_unlock_range = smb2_unlock_range,
4284 .push_mand_locks = smb2_push_mandatory_locks,
4285 .get_lease_key = smb2_get_lease_key,
4286 .set_lease_key = smb2_set_lease_key,
4287 .new_lease_key = smb2_new_lease_key,
373512ec 4288 .generate_signingkey = generate_smb311signingkey,
aab1893d 4289 .calc_signature = smb3_calc_signature,
b3152e2c 4290 .set_integrity = smb3_set_integrity,
aab1893d
SF
4291 .is_read_op = smb21_is_read_op,
4292 .set_oplock_level = smb3_set_oplock_level,
4293 .create_lease_buf = smb3_create_lease_buf,
4294 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 4295 .copychunk_range = smb2_copychunk_range,
02b16665 4296 .duplicate_extents = smb2_duplicate_extents,
aab1893d
SF
4297/* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
4298 .wp_retry_size = smb2_wp_retry_size,
4299 .dir_needs_close = smb2_dir_needs_close,
4300 .fallocate = smb3_fallocate,
834170c8 4301 .enum_snapshots = smb3_enum_snapshots,
026e93dc 4302 .init_transform_rq = smb3_init_transform_rq,
4326ed2f
PS
4303 .is_transform_hdr = smb3_is_transform_hdr,
4304 .receive_transform = smb3_receive_transform,
9d49640a 4305 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 4306 .select_sectype = smb2_select_sectype,
95907fea
RS
4307#ifdef CONFIG_CIFS_XATTR
4308 .query_all_EAs = smb2_query_eas,
5517554e 4309 .set_EA = smb2_set_ea,
95907fea 4310#endif /* CIFS_XATTR */
c1777df1
RS
4311#ifdef CONFIG_CIFS_ACL
4312 .get_acl = get_smb2_acl,
4313 .get_acl_by_fid = get_smb2_acl_by_fid,
4314 .set_acl = set_smb2_acl,
4315#endif /* CIFS_ACL */
8ce79ec3 4316 .next_header = smb2_next_header,
f5b05d62 4317 .ioctl_query_info = smb2_ioctl_query_info,
c847dccf 4318 .make_node = smb2_make_node,
aab1893d 4319};
aab1893d 4320
dd446b16
SF
4321struct smb_version_values smb20_values = {
4322 .version_string = SMB20_VERSION_STRING,
4323 .protocol_id = SMB20_PROT_ID,
4324 .req_capabilities = 0, /* MBZ */
4325 .large_lock_type = 0,
4326 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4327 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4328 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS
4329 .header_size = sizeof(struct smb2_sync_hdr),
4330 .header_preamble_size = 0,
dd446b16
SF
4331 .max_header_size = MAX_SMB2_HDR_SIZE,
4332 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4333 .lock_cmd = SMB2_LOCK,
4334 .cap_unix = 0,
4335 .cap_nt_find = SMB2_NT_FIND,
4336 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL
4337 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4338 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 4339 .create_lease_size = sizeof(struct create_lease),
dd446b16
SF
4340};
4341
1080ef75
SF
4342struct smb_version_values smb21_values = {
4343 .version_string = SMB21_VERSION_STRING,
e4aa25e7
SF
4344 .protocol_id = SMB21_PROT_ID,
4345 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
4346 .large_lock_type = 0,
4347 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4348 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4349 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS
4350 .header_size = sizeof(struct smb2_sync_hdr),
4351 .header_preamble_size = 0,
e4aa25e7
SF
4352 .max_header_size = MAX_SMB2_HDR_SIZE,
4353 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4354 .lock_cmd = SMB2_LOCK,
4355 .cap_unix = 0,
4356 .cap_nt_find = SMB2_NT_FIND,
4357 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL
4358 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4359 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 4360 .create_lease_size = sizeof(struct create_lease),
e4aa25e7
SF
4361};
4362
9764c02f
SF
4363struct smb_version_values smb3any_values = {
4364 .version_string = SMB3ANY_VERSION_STRING,
4365 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
f8015683 4366 .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
4367 .large_lock_type = 0,
4368 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4369 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4370 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS
4371 .header_size = sizeof(struct smb2_sync_hdr),
4372 .header_preamble_size = 0,
9764c02f
SF
4373 .max_header_size = MAX_SMB2_HDR_SIZE,
4374 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4375 .lock_cmd = SMB2_LOCK,
4376 .cap_unix = 0,
4377 .cap_nt_find = SMB2_NT_FIND,
4378 .cap_large_files = SMB2_LARGE_FILES,
4379 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4380 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
4381 .create_lease_size = sizeof(struct create_lease_v2),
4382};
4383
4384struct smb_version_values smbdefault_values = {
4385 .version_string = SMBDEFAULT_VERSION_STRING,
4386 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
f8015683 4387 .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
4388 .large_lock_type = 0,
4389 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4390 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4391 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS
4392 .header_size = sizeof(struct smb2_sync_hdr),
4393 .header_preamble_size = 0,
9764c02f
SF
4394 .max_header_size = MAX_SMB2_HDR_SIZE,
4395 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4396 .lock_cmd = SMB2_LOCK,
4397 .cap_unix = 0,
4398 .cap_nt_find = SMB2_NT_FIND,
4399 .cap_large_files = SMB2_LARGE_FILES,
4400 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4401 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
4402 .create_lease_size = sizeof(struct create_lease_v2),
4403};
4404
e4aa25e7
SF
4405struct smb_version_values smb30_values = {
4406 .version_string = SMB30_VERSION_STRING,
4407 .protocol_id = SMB30_PROT_ID,
f8015683 4408 .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
4409 .large_lock_type = 0,
4410 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4411 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4412 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS
4413 .header_size = sizeof(struct smb2_sync_hdr),
4414 .header_preamble_size = 0,
093b2bda 4415 .max_header_size = MAX_SMB2_HDR_SIZE,
09a4707e 4416 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2dc7e1c0 4417 .lock_cmd = SMB2_LOCK,
29e20f9c
PS
4418 .cap_unix = 0,
4419 .cap_nt_find = SMB2_NT_FIND,
4420 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL
4421 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4422 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 4423 .create_lease_size = sizeof(struct create_lease_v2),
1080ef75 4424};
20b6d8b4
SF
4425
4426struct smb_version_values smb302_values = {
4427 .version_string = SMB302_VERSION_STRING,
4428 .protocol_id = SMB302_PROT_ID,
f8015683 4429 .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
4430 .large_lock_type = 0,
4431 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4432 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4433 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS
4434 .header_size = sizeof(struct smb2_sync_hdr),
4435 .header_preamble_size = 0,
20b6d8b4
SF
4436 .max_header_size = MAX_SMB2_HDR_SIZE,
4437 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4438 .lock_cmd = SMB2_LOCK,
4439 .cap_unix = 0,
4440 .cap_nt_find = SMB2_NT_FIND,
4441 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL
4442 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4443 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 4444 .create_lease_size = sizeof(struct create_lease_v2),
20b6d8b4 4445};
5f7fbf73 4446
5f7fbf73
SF
4447struct smb_version_values smb311_values = {
4448 .version_string = SMB311_VERSION_STRING,
4449 .protocol_id = SMB311_PROT_ID,
f8015683 4450 .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
4451 .large_lock_type = 0,
4452 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4453 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4454 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS
4455 .header_size = sizeof(struct smb2_sync_hdr),
4456 .header_preamble_size = 0,
5f7fbf73
SF
4457 .max_header_size = MAX_SMB2_HDR_SIZE,
4458 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4459 .lock_cmd = SMB2_LOCK,
4460 .cap_unix = 0,
4461 .cap_nt_find = SMB2_NT_FIND,
4462 .cap_large_files = SMB2_LARGE_FILES,
4463 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4464 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
4465 .create_lease_size = sizeof(struct create_lease_v2),
4466};