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Merge tag 'drm/tegra/for-5.7-fixes' of git://anongit.freedesktop.org/tegra/linux...
[thirdparty/linux.git] / fs / cifs / smb2ops.c
CommitLineData
a205d500 1// SPDX-License-Identifier: GPL-2.0
1080ef75
SF		 2/*
3 * SMB2 version specific operations
4 *
5 * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
1080ef75
SF		 6 */
7
3a3bab50 8#include <linux/pagemap.h>
6fc05c25 9#include <linux/vfs.h>
f29ebb47 10#include <linux/falloc.h>
026e93dc 11#include <linux/scatterlist.h>
4fa8e504 12#include <linux/uuid.h>
35adffed 13#include <linux/sort.h>
026e93dc 14#include <crypto/aead.h>
8bd0d701 15#include "cifsfs.h"
1080ef75 16#include "cifsglob.h"
2dc7e1c0
PS		 17#include "smb2pdu.h"
18#include "smb2proto.h"
28ea5290
PS		 19#include "cifsproto.h"
20#include "cifs_debug.h"
b42bf888 21#include "cifs_unicode.h"
2e44b288 22#include "smb2status.h"
6fc05c25 23#include "smb2glob.h"
834170c8 24#include "cifs_ioctl.h"
09902f8d 25#include "smbdirect.h"
28ea5290 26
ef68e831 27/* Change credits for different ops and return the total number of credits */
28ea5290
PS		 28static int
29change_conf(struct TCP_Server_Info *server)
30{
31 server->credits += server->echo_credits + server->oplock_credits;
32 server->oplock_credits = server->echo_credits = 0;
33 switch (server->credits) {
34 case 0:
ef68e831 35 return 0;
28ea5290
PS		 36 case 1:
37 server->echoes = false;
38 server->oplocks = false;
28ea5290
PS		 39 break;
40 case 2:
41 server->echoes = true;
42 server->oplocks = false;
43 server->echo_credits = 1;
28ea5290
PS		 44 break;
45 default:
46 server->echoes = true;
e0ddde9d
SF		 47 if (enable_oplocks) {
48 server->oplocks = true;
49 server->oplock_credits = 1;
50 } else
51 server->oplocks = false;
52
28ea5290 53 server->echo_credits = 1;
28ea5290
PS		 54 }
55 server->credits -= server->echo_credits + server->oplock_credits;
ef68e831 56 return server->credits + server->echo_credits + server->oplock_credits;
28ea5290
PS		 57}
58
59static void
335b7b62
PS		 60smb2_add_credits(struct TCP_Server_Info *server,
61 const struct cifs_credits *credits, const int optype)
28ea5290 62{
ef68e831 63 int *val, rc = -1;
335b7b62
PS		 64 unsigned int add = credits->value;
65 unsigned int instance = credits->instance;
66 bool reconnect_detected = false;
ef68e831 67
28ea5290
PS		 68 spin_lock(&server->req_lock);
69 val = server->ops->get_credits_field(server, optype);
b340a4d4
SF		 70
71 /* eg found case where write overlapping reconnect messed up credits */
72 if (((optype & CIFS_OP_MASK) == CIFS_NEG_OP) && (*val != 0))
73 trace_smb3_reconnect_with_invalid_credits(server->CurrentMid,
74 server->hostname, *val);
335b7b62
PS		 75 if ((instance == 0) || (instance == server->reconnect_instance))
76 *val += add;
77 else
78 reconnect_detected = true;
b340a4d4 79
141891f4
SF		 80 if (*val > 65000) {
81 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
82 printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
83 }
28ea5290 84 server->in_flight--;
ec2e4523 85 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
28ea5290 86 rc = change_conf(server);
983c88a4
PS		 87 /*
88 * Sometimes server returns 0 credits on oplock break ack - we need to
89 * rebalance credits in this case.
90 */
91 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
92 server->oplocks) {
93 if (server->credits > 1) {
94 server->credits--;
95 server->oplock_credits++;
96 }
97 }
28ea5290
PS		 98 spin_unlock(&server->req_lock);
99 wake_up(&server->request_q);
ef68e831 100
335b7b62
PS		 101 if (reconnect_detected)
102 cifs_dbg(FYI, "trying to put %d credits from the old server instance %d\n",
103 add, instance);
104
82e0457a
PS		 105 if (server->tcpStatus == CifsNeedReconnect
106 || server->tcpStatus == CifsExiting)
ef68e831
PS		 107 return;
108
109 switch (rc) {
110 case -1:
111 /* change_conf hasn't been executed */
112 break;
113 case 0:
3175eb9b 114 cifs_server_dbg(VFS, "Possible client or server bug - zero credits\n");
ef68e831
PS		 115 break;
116 case 1:
3175eb9b 117 cifs_server_dbg(VFS, "disabling echoes and oplocks\n");
ef68e831
PS		 118 break;
119 case 2:
120 cifs_dbg(FYI, "disabling oplocks\n");
121 break;
122 default:
123 cifs_dbg(FYI, "add %u credits total=%d\n", add, rc);
124 }
28ea5290
PS		 125}
126
127static void
128smb2_set_credits(struct TCP_Server_Info *server, const int val)
129{
130 spin_lock(&server->req_lock);
131 server->credits = val;
9e1a37da
SF		 132 if (val == 1)
133 server->reconnect_instance++;
28ea5290 134 spin_unlock(&server->req_lock);
6e4d3bbe
SF		 135 /* don't log while holding the lock */
136 if (val == 1)
137 cifs_dbg(FYI, "set credits to 1 due to smb2 reconnect\n");
28ea5290
PS		 138}
139
140static int *
141smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
142{
143 switch (optype) {
144 case CIFS_ECHO_OP:
145 return &server->echo_credits;
146 case CIFS_OBREAK_OP:
147 return &server->oplock_credits;
148 default:
149 return &server->credits;
150 }
151}
152
153static unsigned int
154smb2_get_credits(struct mid_q_entry *mid)
155{
86a7964b 156 return mid->credits_received;
28ea5290 157}
2dc7e1c0 158
cb7e9eab
PS		 159static int
160smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
335b7b62 161 unsigned int *num, struct cifs_credits *credits)
cb7e9eab
PS		 162{
163 int rc = 0;
164 unsigned int scredits;
165
166 spin_lock(&server->req_lock);
167 while (1) {
168 if (server->credits <= 0) {
169 spin_unlock(&server->req_lock);
170 cifs_num_waiters_inc(server);
171 rc = wait_event_killable(server->request_q,
b227d215 172 has_credits(server, &server->credits, 1));
cb7e9eab
PS		 173 cifs_num_waiters_dec(server);
174 if (rc)
175 return rc;
176 spin_lock(&server->req_lock);
177 } else {
178 if (server->tcpStatus == CifsExiting) {
179 spin_unlock(&server->req_lock);
180 return -ENOENT;
181 }
182
183 scredits = server->credits;
184 /* can deadlock with reopen */
acc58d0b 185 if (scredits <= 8) {
cb7e9eab 186 *num = SMB2_MAX_BUFFER_SIZE;
335b7b62
PS		 187 credits->value = 0;
188 credits->instance = 0;
cb7e9eab
PS		 189 break;
190 }
191
acc58d0b
PS		 192 /* leave some credits for reopen and other ops */
193 scredits -= 8;
cb7e9eab
PS		 194 *num = min_t(unsigned int, size,
195 scredits * SMB2_MAX_BUFFER_SIZE);
196
335b7b62
PS		 197 credits->value =
198 DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
199 credits->instance = server->reconnect_instance;
200 server->credits -= credits->value;
cb7e9eab 201 server->in_flight++;
1b63f184
SF		 202 if (server->in_flight > server->max_in_flight)
203 server->max_in_flight = server->in_flight;
cb7e9eab
PS		 204 break;
205 }
206 }
207 spin_unlock(&server->req_lock);
208 return rc;
209}
210
9a1c67e8
PS		 211static int
212smb2_adjust_credits(struct TCP_Server_Info *server,
213 struct cifs_credits *credits,
214 const unsigned int payload_size)
215{
216 int new_val = DIV_ROUND_UP(payload_size, SMB2_MAX_BUFFER_SIZE);
217
218 if (!credits->value || credits->value == new_val)
219 return 0;
220
221 if (credits->value < new_val) {
222 WARN_ONCE(1, "request has less credits (%d) than required (%d)",
223 credits->value, new_val);
224 return -ENOTSUPP;
225 }
226
227 spin_lock(&server->req_lock);
228
229 if (server->reconnect_instance != credits->instance) {
230 spin_unlock(&server->req_lock);
3175eb9b 231 cifs_server_dbg(VFS, "trying to return %d credits to old session\n",
9a1c67e8
PS		 232 credits->value - new_val);
233 return -EAGAIN;
234 }
235
236 server->credits += credits->value - new_val;
237 spin_unlock(&server->req_lock);
238 wake_up(&server->request_q);
239 credits->value = new_val;
240 return 0;
241}
242
2dc7e1c0
PS		 243static __u64
244smb2_get_next_mid(struct TCP_Server_Info *server)
245{
246 __u64 mid;
247 /* for SMB2 we need the current value */
248 spin_lock(&GlobalMid_Lock);
249 mid = server->CurrentMid++;
250 spin_unlock(&GlobalMid_Lock);
251 return mid;
252}
1080ef75 253
c781af7e
PS		 254static void
255smb2_revert_current_mid(struct TCP_Server_Info *server, const unsigned int val)
256{
257 spin_lock(&GlobalMid_Lock);
258 if (server->CurrentMid >= val)
259 server->CurrentMid -= val;
260 spin_unlock(&GlobalMid_Lock);
261}
262
093b2bda
PS		 263static struct mid_q_entry *
264smb2_find_mid(struct TCP_Server_Info *server, char *buf)
265{
266 struct mid_q_entry *mid;
49f466bd 267 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
31473fc4 268 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
093b2bda 269
31473fc4 270 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
3175eb9b 271 cifs_server_dbg(VFS, "Encrypted frame parsing not supported yet\n");
373512ec
SF		 272 return NULL;
273 }
274
093b2bda
PS		 275 spin_lock(&GlobalMid_Lock);
276 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
9235d098 277 if ((mid->mid == wire_mid) &&
093b2bda 278 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
31473fc4 279 (mid->command == shdr->Command)) {
696e420b 280 kref_get(&mid->refcount);
093b2bda
PS		 281 spin_unlock(&GlobalMid_Lock);
282 return mid;
283 }
284 }
285 spin_unlock(&GlobalMid_Lock);
286 return NULL;
287}
288
289static void
14547f7d 290smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
093b2bda
PS		 291{
292#ifdef CONFIG_CIFS_DEBUG2
49f466bd 293 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
093b2bda 294
3175eb9b 295 cifs_server_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
31473fc4
PS		 296 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
297 shdr->ProcessId);
3175eb9b 298 cifs_server_dbg(VFS, "smb buf %p len %u\n", buf,
71992e62 299 server->ops->calc_smb_size(buf, server));
093b2bda
PS		 300#endif
301}
302
ec2e4523
PS		 303static bool
304smb2_need_neg(struct TCP_Server_Info *server)
305{
306 return server->max_read == 0;
307}
308
309static int
310smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
311{
312 int rc;
a205d500 313
f6a6bf7c 314 cifs_ses_server(ses)->CurrentMid = 0;
ec2e4523
PS		 315 rc = SMB2_negotiate(xid, ses);
316 /* BB we probably don't need to retry with modern servers */
317 if (rc == -EAGAIN)
318 rc = -EHOSTDOWN;
319 return rc;
320}
321
3a3bab50
PS		 322static unsigned int
323smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
324{
325 struct TCP_Server_Info *server = tcon->ses->server;
326 unsigned int wsize;
327
328 /* start with specified wsize, or default */
329 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
330 wsize = min_t(unsigned int, wsize, server->max_write);
cb7e9eab
PS		 331 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
332 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 333
3a3bab50
PS		 334 return wsize;
335}
336
3d621230
SF		 337static unsigned int
338smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
339{
340 struct TCP_Server_Info *server = tcon->ses->server;
341 unsigned int wsize;
342
343 /* start with specified wsize, or default */
344 wsize = volume_info->wsize ? volume_info->wsize : SMB3_DEFAULT_IOSIZE;
345 wsize = min_t(unsigned int, wsize, server->max_write);
346#ifdef CONFIG_CIFS_SMB_DIRECT
347 if (server->rdma) {
348 if (server->sign)
f7950cb0
LL		 349 /*
350 * Account for SMB2 data transfer packet header and
351 * possible encryption header
352 */
3d621230 353 wsize = min_t(unsigned int,
f7950cb0
LL		 354 wsize,
355 server->smbd_conn->max_fragmented_send_size -
356 SMB2_READWRITE_PDU_HEADER_SIZE -
357 sizeof(struct smb2_transform_hdr));
3d621230
SF		 358 else
359 wsize = min_t(unsigned int,
360 wsize, server->smbd_conn->max_readwrite_size);
361 }
362#endif
363 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
364 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
365
366 return wsize;
367}
368
3a3bab50
PS		 369static unsigned int
370smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
371{
372 struct TCP_Server_Info *server = tcon->ses->server;
373 unsigned int rsize;
374
375 /* start with specified rsize, or default */
376 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
377 rsize = min_t(unsigned int, rsize, server->max_read);
bed9da02
PS		 378
379 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
380 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 381
3a3bab50
PS		 382 return rsize;
383}
384
3d621230
SF		 385static unsigned int
386smb3_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 : SMB3_DEFAULT_IOSIZE;
393 rsize = min_t(unsigned int, rsize, server->max_read);
394#ifdef CONFIG_CIFS_SMB_DIRECT
395 if (server->rdma) {
396 if (server->sign)
f7950cb0
LL		 397 /*
398 * Account for SMB2 data transfer packet header and
399 * possible encryption header
400 */
3d621230 401 rsize = min_t(unsigned int,
f7950cb0
LL		 402 rsize,
403 server->smbd_conn->max_fragmented_recv_size -
404 SMB2_READWRITE_PDU_HEADER_SIZE -
405 sizeof(struct smb2_transform_hdr));
3d621230
SF		 406 else
407 rsize = min_t(unsigned int,
408 rsize, server->smbd_conn->max_readwrite_size);
409 }
410#endif
411
412 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
413 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
414
415 return rsize;
416}
fe856be4
AA		 417
418static int
419parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
420 size_t buf_len,
421 struct cifs_server_iface **iface_list,
422 size_t *iface_count)
423{
424 struct network_interface_info_ioctl_rsp *p;
425 struct sockaddr_in *addr4;
426 struct sockaddr_in6 *addr6;
427 struct iface_info_ipv4 *p4;
428 struct iface_info_ipv6 *p6;
429 struct cifs_server_iface *info;
430 ssize_t bytes_left;
431 size_t next = 0;
432 int nb_iface = 0;
433 int rc = 0;
434
435 *iface_list = NULL;
436 *iface_count = 0;
437
438 /*
439 * Fist pass: count and sanity check
440 */
441
442 bytes_left = buf_len;
443 p = buf;
444 while (bytes_left >= sizeof(*p)) {
445 nb_iface++;
446 next = le32_to_cpu(p->Next);
447 if (!next) {
448 bytes_left -= sizeof(*p);
449 break;
450 }
451 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
452 bytes_left -= next;
453 }
454
455 if (!nb_iface) {
456 cifs_dbg(VFS, "%s: malformed interface info\n", __func__);
457 rc = -EINVAL;
458 goto out;
459 }
460
461 if (bytes_left || p->Next)
462 cifs_dbg(VFS, "%s: incomplete interface info\n", __func__);
463
464
465 /*
466 * Second pass: extract info to internal structure
467 */
468
469 *iface_list = kcalloc(nb_iface, sizeof(**iface_list), GFP_KERNEL);
470 if (!*iface_list) {
471 rc = -ENOMEM;
472 goto out;
473 }
474
475 info = *iface_list;
476 bytes_left = buf_len;
477 p = buf;
478 while (bytes_left >= sizeof(*p)) {
479 info->speed = le64_to_cpu(p->LinkSpeed);
480 info->rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE);
481 info->rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE);
482
483 cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, *iface_count);
484 cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed);
485 cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__,
486 le32_to_cpu(p->Capability));
487
488 switch (p->Family) {
489 /*
490 * The kernel and wire socket structures have the same
491 * layout and use network byte order but make the
492 * conversion explicit in case either one changes.
493 */
494 case INTERNETWORK:
495 addr4 = (struct sockaddr_in *)&info->sockaddr;
496 p4 = (struct iface_info_ipv4 *)p->Buffer;
497 addr4->sin_family = AF_INET;
498 memcpy(&addr4->sin_addr, &p4->IPv4Address, 4);
499
500 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
501 addr4->sin_port = cpu_to_be16(CIFS_PORT);
502
503 cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__,
504 &addr4->sin_addr);
505 break;
506 case INTERNETWORKV6:
507 addr6 = (struct sockaddr_in6 *)&info->sockaddr;
508 p6 = (struct iface_info_ipv6 *)p->Buffer;
509 addr6->sin6_family = AF_INET6;
510 memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16);
511
512 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
513 addr6->sin6_flowinfo = 0;
514 addr6->sin6_scope_id = 0;
515 addr6->sin6_port = cpu_to_be16(CIFS_PORT);
516
517 cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__,
518 &addr6->sin6_addr);
519 break;
520 default:
521 cifs_dbg(VFS,
522 "%s: skipping unsupported socket family\n",
523 __func__);
524 goto next_iface;
525 }
526
527 (*iface_count)++;
528 info++;
529next_iface:
530 next = le32_to_cpu(p->Next);
531 if (!next)
532 break;
533 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
534 bytes_left -= next;
535 }
536
537 if (!*iface_count) {
538 rc = -EINVAL;
539 goto out;
540 }
541
542out:
543 if (rc) {
544 kfree(*iface_list);
545 *iface_count = 0;
546 *iface_list = NULL;
547 }
548 return rc;
549}
550
35adffed
AA		 551static int compare_iface(const void *ia, const void *ib)
552{
553 const struct cifs_server_iface *a = (struct cifs_server_iface *)ia;
554 const struct cifs_server_iface *b = (struct cifs_server_iface *)ib;
555
556 return a->speed == b->speed ? 0 : (a->speed > b->speed ? -1 : 1);
557}
fe856be4 558
c481e9fe
SF		 559static int
560SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
561{
562 int rc;
563 unsigned int ret_data_len = 0;
fe856be4
AA		 564 struct network_interface_info_ioctl_rsp *out_buf = NULL;
565 struct cifs_server_iface *iface_list;
566 size_t iface_count;
567 struct cifs_ses *ses = tcon->ses;
c481e9fe
SF		 568
569 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
570 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
571 NULL /* no data input */, 0 /* no data input */,
153322f7 572 CIFSMaxBufSize, (char **)&out_buf, &ret_data_len);
c3ed4402
SF		 573 if (rc == -EOPNOTSUPP) {
574 cifs_dbg(FYI,
575 "server does not support query network interfaces\n");
576 goto out;
577 } else if (rc != 0) {
3175eb9b 578 cifs_tcon_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
fe856be4 579 goto out;
9ffc5412 580 }
fe856be4
AA		 581
582 rc = parse_server_interfaces(out_buf, ret_data_len,
583 &iface_list, &iface_count);
584 if (rc)
585 goto out;
586
35adffed
AA		 587 /* sort interfaces from fastest to slowest */
588 sort(iface_list, iface_count, sizeof(*iface_list), compare_iface, NULL);
589
fe856be4
AA		 590 spin_lock(&ses->iface_lock);
591 kfree(ses->iface_list);
592 ses->iface_list = iface_list;
593 ses->iface_count = iface_count;
594 ses->iface_last_update = jiffies;
595 spin_unlock(&ses->iface_lock);
596
597out:
24df1483 598 kfree(out_buf);
c481e9fe
SF		 599 return rc;
600}
c481e9fe 601
9da6ec77
RS		 602static void
603smb2_close_cached_fid(struct kref *ref)
a93864d9 604{
9da6ec77
RS		 605 struct cached_fid *cfid = container_of(ref, struct cached_fid,
606 refcount);
607
a93864d9
RS		 608 if (cfid->is_valid) {
609 cifs_dbg(FYI, "clear cached root file handle\n");
610 SMB2_close(0, cfid->tcon, cfid->fid->persistent_fid,
611 cfid->fid->volatile_fid);
612 cfid->is_valid = false;
b0f6df73 613 cfid->file_all_info_is_valid = false;
d9191319 614 cfid->has_lease = false;
a93864d9 615 }
9da6ec77
RS		 616}
617
618void close_shroot(struct cached_fid *cfid)
619{
620 mutex_lock(&cfid->fid_mutex);
621 kref_put(&cfid->refcount, smb2_close_cached_fid);
a93864d9
RS		 622 mutex_unlock(&cfid->fid_mutex);
623}
624
d9191319
PS		 625void close_shroot_lease_locked(struct cached_fid *cfid)
626{
627 if (cfid->has_lease) {
628 cfid->has_lease = false;
629 kref_put(&cfid->refcount, smb2_close_cached_fid);
630 }
631}
632
633void close_shroot_lease(struct cached_fid *cfid)
634{
635 mutex_lock(&cfid->fid_mutex);
636 close_shroot_lease_locked(cfid);
637 mutex_unlock(&cfid->fid_mutex);
638}
639
9da6ec77
RS		 640void
641smb2_cached_lease_break(struct work_struct *work)
642{
643 struct cached_fid *cfid = container_of(work,
644 struct cached_fid, lease_break);
645
d9191319 646 close_shroot_lease(cfid);
9da6ec77
RS		 647}
648
3d4ef9a1
SF		 649/*
650 * Open the directory at the root of a share
651 */
0f060936
AG		 652int open_shroot(unsigned int xid, struct cifs_tcon *tcon,
653 struct cifs_sb_info *cifs_sb, struct cifs_fid *pfid)
3d4ef9a1 654{
b0f6df73
RS		 655 struct cifs_ses *ses = tcon->ses;
656 struct TCP_Server_Info *server = ses->server;
657 struct cifs_open_parms oparms;
658 struct smb2_create_rsp *o_rsp = NULL;
659 struct smb2_query_info_rsp *qi_rsp = NULL;
660 int resp_buftype[2];
661 struct smb_rqst rqst[2];
662 struct kvec rsp_iov[2];
663 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
664 struct kvec qi_iov[1];
665 int rc, flags = 0;
666 __le16 utf16_path = 0; /* Null - since an open of top of share */
a93864d9 667 u8 oplock = SMB2_OPLOCK_LEVEL_II;
3d4ef9a1 668
a93864d9
RS		 669 mutex_lock(&tcon->crfid.fid_mutex);
670 if (tcon->crfid.is_valid) {
3d4ef9a1 671 cifs_dbg(FYI, "found a cached root file handle\n");
a93864d9 672 memcpy(pfid, tcon->crfid.fid, sizeof(struct cifs_fid));
9da6ec77 673 kref_get(&tcon->crfid.refcount);
a93864d9 674 mutex_unlock(&tcon->crfid.fid_mutex);
3d4ef9a1
SF		 675 return 0;
676 }
677
96d9f7ed
SF		 678 /*
679 * We do not hold the lock for the open because in case
680 * SMB2_open needs to reconnect, it will end up calling
681 * cifs_mark_open_files_invalid() which takes the lock again
682 * thus causing a deadlock
683 */
684
685 mutex_unlock(&tcon->crfid.fid_mutex);
686
b0f6df73
RS		 687 if (smb3_encryption_required(tcon))
688 flags |= CIFS_TRANSFORM_REQ;
689
0fe0781f
PA		 690 if (!server->ops->new_lease_key)
691 return -EIO;
692
693 server->ops->new_lease_key(pfid);
694
b0f6df73
RS		 695 memset(rqst, 0, sizeof(rqst));
696 resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
697 memset(rsp_iov, 0, sizeof(rsp_iov));
698
699 /* Open */
700 memset(&open_iov, 0, sizeof(open_iov));
701 rqst[0].rq_iov = open_iov;
702 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
703
704 oparms.tcon = tcon;
0f060936 705 oparms.create_options = cifs_create_options(cifs_sb, 0);
b0f6df73
RS		 706 oparms.desired_access = FILE_READ_ATTRIBUTES;
707 oparms.disposition = FILE_OPEN;
708 oparms.fid = pfid;
709 oparms.reconnect = false;
710
711 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &utf16_path);
712 if (rc)
96d9f7ed 713 goto oshr_free;
b0f6df73
RS		 714 smb2_set_next_command(tcon, &rqst[0]);
715
716 memset(&qi_iov, 0, sizeof(qi_iov));
717 rqst[1].rq_iov = qi_iov;
718 rqst[1].rq_nvec = 1;
719
720 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID,
721 COMPOUND_FID, FILE_ALL_INFORMATION,
722 SMB2_O_INFO_FILE, 0,
723 sizeof(struct smb2_file_all_info) +
724 PATH_MAX * 2, 0, NULL);
725 if (rc)
96d9f7ed 726 goto oshr_free;
b0f6df73
RS		 727
728 smb2_set_related(&rqst[1]);
729
730 rc = compound_send_recv(xid, ses, flags, 2, rqst,
731 resp_buftype, rsp_iov);
7e5a70ad
AA		 732 mutex_lock(&tcon->crfid.fid_mutex);
733
734 /*
735 * Now we need to check again as the cached root might have
736 * been successfully re-opened from a concurrent process
737 */
738
739 if (tcon->crfid.is_valid) {
740 /* work was already done */
741
742 /* stash fids for close() later */
743 struct cifs_fid fid = {
744 .persistent_fid = pfid->persistent_fid,
745 .volatile_fid = pfid->volatile_fid,
746 };
747
748 /*
749 * caller expects this func to set pfid to a valid
750 * cached root, so we copy the existing one and get a
751 * reference.
752 */
753 memcpy(pfid, tcon->crfid.fid, sizeof(*pfid));
754 kref_get(&tcon->crfid.refcount);
755
756 mutex_unlock(&tcon->crfid.fid_mutex);
757
758 if (rc == 0) {
759 /* close extra handle outside of crit sec */
760 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
761 }
762 goto oshr_free;
763 }
764
765 /* Cached root is still invalid, continue normaly */
766
7dcc82c2
SF		 767 if (rc) {
768 if (rc == -EREMCHG) {
769 tcon->need_reconnect = true;
770 printk_once(KERN_WARNING "server share %s deleted\n",
771 tcon->treeName);
772 }
b0f6df73 773 goto oshr_exit;
7dcc82c2 774 }
b0f6df73 775
d2f15428
SF		 776 atomic_inc(&tcon->num_remote_opens);
777
b0f6df73
RS		 778 o_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
779 oparms.fid->persistent_fid = o_rsp->PersistentFileId;
780 oparms.fid->volatile_fid = o_rsp->VolatileFileId;
781#ifdef CONFIG_CIFS_DEBUG2
782 oparms.fid->mid = le64_to_cpu(o_rsp->sync_hdr.MessageId);
783#endif /* CIFS_DEBUG2 */
784
b0f6df73
RS		 785 memcpy(tcon->crfid.fid, pfid, sizeof(struct cifs_fid));
786 tcon->crfid.tcon = tcon;
787 tcon->crfid.is_valid = true;
788 kref_init(&tcon->crfid.refcount);
b0f6df73 789
89a5bfa3 790 /* BB TBD check to see if oplock level check can be removed below */
2f94a312
RS		 791 if (o_rsp->OplockLevel == SMB2_OPLOCK_LEVEL_LEASE) {
792 kref_get(&tcon->crfid.refcount);
d9191319 793 tcon->crfid.has_lease = true;
89a5bfa3
SF		 794 smb2_parse_contexts(server, o_rsp,
795 &oparms.fid->epoch,
69dda305
AA		 796 oparms.fid->lease_key, &oplock,
797 NULL, NULL);
2f94a312
RS		 798 } else
799 goto oshr_exit;
b0f6df73
RS		 800
801 qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
802 if (le32_to_cpu(qi_rsp->OutputBufferLength) < sizeof(struct smb2_file_all_info))
803 goto oshr_exit;
4811e309 804 if (!smb2_validate_and_copy_iov(
b0f6df73
RS		 805 le16_to_cpu(qi_rsp->OutputBufferOffset),
806 sizeof(struct smb2_file_all_info),
807 &rsp_iov[1], sizeof(struct smb2_file_all_info),
4811e309 808 (char *)&tcon->crfid.file_all_info))
720aec01 809 tcon->crfid.file_all_info_is_valid = true;
b0f6df73 810
7e5a70ad 811oshr_exit:
a93864d9 812 mutex_unlock(&tcon->crfid.fid_mutex);
7e5a70ad 813oshr_free:
b0f6df73
RS		 814 SMB2_open_free(&rqst[0]);
815 SMB2_query_info_free(&rqst[1]);
816 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
817 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
3d4ef9a1
SF		 818 return rc;
819}
820
af6a12ea 821static void
0f060936
AG		 822smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
823 struct cifs_sb_info *cifs_sb)
af6a12ea
SF		 824{
825 int rc;
826 __le16 srch_path = 0; /* Null - open root of share */
827 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
828 struct cifs_open_parms oparms;
829 struct cifs_fid fid;
3d4ef9a1 830 bool no_cached_open = tcon->nohandlecache;
af6a12ea
SF		 831
832 oparms.tcon = tcon;
833 oparms.desired_access = FILE_READ_ATTRIBUTES;
834 oparms.disposition = FILE_OPEN;
0f060936 835 oparms.create_options = cifs_create_options(cifs_sb, 0);
af6a12ea
SF		 836 oparms.fid = &fid;
837 oparms.reconnect = false;
838
3d4ef9a1 839 if (no_cached_open)
9d874c36 840 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
69dda305 841 NULL, NULL);
3d4ef9a1 842 else
0f060936 843 rc = open_shroot(xid, tcon, cifs_sb, &fid);
3d4ef9a1 844
af6a12ea
SF		 845 if (rc)
846 return;
847
c481e9fe 848 SMB3_request_interfaces(xid, tcon);
c481e9fe 849
af6a12ea
SF		 850 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
851 FS_ATTRIBUTE_INFORMATION);
852 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
853 FS_DEVICE_INFORMATION);
21ba3845
SF		 854 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
855 FS_VOLUME_INFORMATION);
af6a12ea
SF		 856 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
857 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
3d4ef9a1
SF		 858 if (no_cached_open)
859 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
9da6ec77
RS		 860 else
861 close_shroot(&tcon->crfid);
af6a12ea
SF		 862}
863
34f62640 864static void
0f060936
AG		 865smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
866 struct cifs_sb_info *cifs_sb)
34f62640
SF		 867{
868 int rc;
869 __le16 srch_path = 0; /* Null - open root of share */
870 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
871 struct cifs_open_parms oparms;
872 struct cifs_fid fid;
873
874 oparms.tcon = tcon;
875 oparms.desired_access = FILE_READ_ATTRIBUTES;
876 oparms.disposition = FILE_OPEN;
0f060936 877 oparms.create_options = cifs_create_options(cifs_sb, 0);
34f62640
SF		 878 oparms.fid = &fid;
879 oparms.reconnect = false;
880
69dda305
AA		 881 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
882 NULL, NULL);
34f62640
SF		 883 if (rc)
884 return;
885
2167114c
SF		 886 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
887 FS_ATTRIBUTE_INFORMATION);
888 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
889 FS_DEVICE_INFORMATION);
34f62640 890 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
34f62640
SF		 891}
892
2503a0db
PS		 893static int
894smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
895 struct cifs_sb_info *cifs_sb, const char *full_path)
896{
897 int rc;
2503a0db 898 __le16 *utf16_path;
2e44b288 899 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 900 struct cifs_open_parms oparms;
901 struct cifs_fid fid;
2503a0db 902
a93864d9 903 if ((*full_path == 0) && tcon->crfid.is_valid)
3d4ef9a1
SF		 904 return 0;
905
2503a0db
PS		 906 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
907 if (!utf16_path)
908 return -ENOMEM;
909
064f6047
PS		 910 oparms.tcon = tcon;
911 oparms.desired_access = FILE_READ_ATTRIBUTES;
912 oparms.disposition = FILE_OPEN;
0f060936 913 oparms.create_options = cifs_create_options(cifs_sb, 0);
064f6047 914 oparms.fid = &fid;
9cbc0b73 915 oparms.reconnect = false;
064f6047 916
69dda305
AA		 917 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
918 NULL);
2503a0db
PS		 919 if (rc) {
920 kfree(utf16_path);
921 return rc;
922 }
923
064f6047 924 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2503a0db
PS		 925 kfree(utf16_path);
926 return rc;
927}
928
be4cb9e3
PS		 929static int
930smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
931 struct cifs_sb_info *cifs_sb, const char *full_path,
932 u64 *uniqueid, FILE_ALL_INFO *data)
933{
934 *uniqueid = le64_to_cpu(data->IndexNumber);
935 return 0;
936}
937
b7546bc5
PS		 938static int
939smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
940 struct cifs_fid *fid, FILE_ALL_INFO *data)
941{
942 int rc;
943 struct smb2_file_all_info *smb2_data;
944
1bbe4997 945 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
b7546bc5
PS		 946 GFP_KERNEL);
947 if (smb2_data == NULL)
948 return -ENOMEM;
949
950 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
951 smb2_data);
952 if (!rc)
953 move_smb2_info_to_cifs(data, smb2_data);
954 kfree(smb2_data);
955 return rc;
956}
957
1368f155 958#ifdef CONFIG_CIFS_XATTR
95907fea
RS		 959static ssize_t
960move_smb2_ea_to_cifs(char *dst, size_t dst_size,
961 struct smb2_file_full_ea_info *src, size_t src_size,
962 const unsigned char *ea_name)
963{
964 int rc = 0;
965 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
966 char *name, *value;
0c5d6cb6 967 size_t buf_size = dst_size;
95907fea
RS		 968 size_t name_len, value_len, user_name_len;
969
970 while (src_size > 0) {
971 name = &src->ea_data[0];
972 name_len = (size_t)src->ea_name_length;
973 value = &src->ea_data[src->ea_name_length + 1];
974 value_len = (size_t)le16_to_cpu(src->ea_value_length);
975
a205d500 976 if (name_len == 0)
95907fea 977 break;
95907fea
RS		 978
979 if (src_size < 8 + name_len + 1 + value_len) {
980 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
981 rc = -EIO;
982 goto out;
983 }
984
985 if (ea_name) {
986 if (ea_name_len == name_len &&
987 memcmp(ea_name, name, name_len) == 0) {
988 rc = value_len;
989 if (dst_size == 0)
990 goto out;
991 if (dst_size < value_len) {
992 rc = -ERANGE;
993 goto out;
994 }
995 memcpy(dst, value, value_len);
996 goto out;
997 }
998 } else {
999 /* 'user.' plus a terminating null */
1000 user_name_len = 5 + 1 + name_len;
1001
0c5d6cb6
RS		 1002 if (buf_size == 0) {
1003 /* skip copy - calc size only */
1004 rc += user_name_len;
1005 } else if (dst_size >= user_name_len) {
95907fea
RS		 1006 dst_size -= user_name_len;
1007 memcpy(dst, "user.", 5);
1008 dst += 5;
1009 memcpy(dst, src->ea_data, name_len);
1010 dst += name_len;
1011 *dst = 0;
1012 ++dst;
0c5d6cb6 1013 rc += user_name_len;
95907fea
RS		 1014 } else {
1015 /* stop before overrun buffer */
1016 rc = -ERANGE;
1017 break;
1018 }
1019 }
1020
1021 if (!src->next_entry_offset)
1022 break;
1023
1024 if (src_size < le32_to_cpu(src->next_entry_offset)) {
1025 /* stop before overrun buffer */
1026 rc = -ERANGE;
1027 break;
1028 }
1029 src_size -= le32_to_cpu(src->next_entry_offset);
1030 src = (void *)((char *)src +
1031 le32_to_cpu(src->next_entry_offset));
1032 }
1033
1034 /* didn't find the named attribute */
1035 if (ea_name)
1036 rc = -ENODATA;
1037
1038out:
1039 return (ssize_t)rc;
1040}
1041
1042static ssize_t
1043smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
1044 const unsigned char *path, const unsigned char *ea_name,
1045 char *ea_data, size_t buf_size,
1046 struct cifs_sb_info *cifs_sb)
1047{
1048 int rc;
1049 __le16 *utf16_path;
f9793b6f
RS		 1050 struct kvec rsp_iov = {NULL, 0};
1051 int buftype = CIFS_NO_BUFFER;
1052 struct smb2_query_info_rsp *rsp;
1053 struct smb2_file_full_ea_info *info = NULL;
95907fea
RS		 1054
1055 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1056 if (!utf16_path)
1057 return -ENOMEM;
1058
f9793b6f
RS		 1059 rc = smb2_query_info_compound(xid, tcon, utf16_path,
1060 FILE_READ_EA,
1061 FILE_FULL_EA_INFORMATION,
1062 SMB2_O_INFO_FILE,
c4627e66
RS		 1063 CIFSMaxBufSize -
1064 MAX_SMB2_CREATE_RESPONSE_SIZE -
1065 MAX_SMB2_CLOSE_RESPONSE_SIZE,
f9793b6f 1066 &rsp_iov, &buftype, cifs_sb);
95907fea 1067 if (rc) {
f9793b6f
RS		 1068 /*
1069 * If ea_name is NULL (listxattr) and there are no EAs,
1070 * return 0 as it's not an error. Otherwise, the specified
1071 * ea_name was not found.
1072 */
1073 if (!ea_name && rc == -ENODATA)
1074 rc = 0;
1075 goto qeas_exit;
95907fea
RS		 1076 }
1077
f9793b6f
RS		 1078 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
1079 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
1080 le32_to_cpu(rsp->OutputBufferLength),
1081 &rsp_iov,
1082 sizeof(struct smb2_file_full_ea_info));
1083 if (rc)
1084 goto qeas_exit;
95907fea 1085
f9793b6f
RS		 1086 info = (struct smb2_file_full_ea_info *)(
1087 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
1088 rc = move_smb2_ea_to_cifs(ea_data, buf_size, info,
1089 le32_to_cpu(rsp->OutputBufferLength), ea_name);
95907fea 1090
f9793b6f
RS		 1091 qeas_exit:
1092 kfree(utf16_path);
1093 free_rsp_buf(buftype, rsp_iov.iov_base);
95907fea
RS		 1094 return rc;
1095}
1096
5517554e
RS		 1097
1098static int
1099smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
1100 const char *path, const char *ea_name, const void *ea_value,
1101 const __u16 ea_value_len, const struct nls_table *nls_codepage,
1102 struct cifs_sb_info *cifs_sb)
1103{
0967e545 1104 struct cifs_ses *ses = tcon->ses;
0967e545 1105 __le16 *utf16_path = NULL;
5517554e 1106 int ea_name_len = strlen(ea_name);
0967e545 1107 int flags = 0;
5517554e 1108 int len;
0967e545
RS		 1109 struct smb_rqst rqst[3];
1110 int resp_buftype[3];
1111 struct kvec rsp_iov[3];
1112 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
1113 struct cifs_open_parms oparms;
1114 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1115 struct cifs_fid fid;
1116 struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
1117 unsigned int size[1];
1118 void *data[1];
1119 struct smb2_file_full_ea_info *ea = NULL;
1120 struct kvec close_iov[1];
85db6b7a
RS		 1121 struct smb2_query_info_rsp *rsp;
1122 int rc, used_len = 0;
0967e545
RS		 1123
1124 if (smb3_encryption_required(tcon))
1125 flags |= CIFS_TRANSFORM_REQ;
5517554e
RS		 1126
1127 if (ea_name_len > 255)
1128 return -EINVAL;
1129
1130 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1131 if (!utf16_path)
1132 return -ENOMEM;
1133
0967e545
RS		 1134 memset(rqst, 0, sizeof(rqst));
1135 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1136 memset(rsp_iov, 0, sizeof(rsp_iov));
1137
21094641
RS		 1138 if (ses->server->ops->query_all_EAs) {
1139 if (!ea_value) {
1140 rc = ses->server->ops->query_all_EAs(xid, tcon, path,
1141 ea_name, NULL, 0,
1142 cifs_sb);
1143 if (rc == -ENODATA)
1144 goto sea_exit;
85db6b7a
RS		 1145 } else {
1146 /* If we are adding a attribute we should first check
1147 * if there will be enough space available to store
1148 * the new EA. If not we should not add it since we
1149 * would not be able to even read the EAs back.
1150 */
1151 rc = smb2_query_info_compound(xid, tcon, utf16_path,
1152 FILE_READ_EA,
1153 FILE_FULL_EA_INFORMATION,
1154 SMB2_O_INFO_FILE,
1155 CIFSMaxBufSize -
1156 MAX_SMB2_CREATE_RESPONSE_SIZE -
1157 MAX_SMB2_CLOSE_RESPONSE_SIZE,
1158 &rsp_iov[1], &resp_buftype[1], cifs_sb);
1159 if (rc == 0) {
1160 rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
1161 used_len = le32_to_cpu(rsp->OutputBufferLength);
1162 }
1163 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1164 resp_buftype[1] = CIFS_NO_BUFFER;
1165 memset(&rsp_iov[1], 0, sizeof(rsp_iov[1]));
1166 rc = 0;
1167
1168 /* Use a fudge factor of 256 bytes in case we collide
1169 * with a different set_EAs command.
1170 */
1171 if(CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE -
1172 MAX_SMB2_CLOSE_RESPONSE_SIZE - 256 <
1173 used_len + ea_name_len + ea_value_len + 1) {
1174 rc = -ENOSPC;
1175 goto sea_exit;
1176 }
21094641
RS		 1177 }
1178 }
1179
0967e545
RS		 1180 /* Open */
1181 memset(&open_iov, 0, sizeof(open_iov));
1182 rqst[0].rq_iov = open_iov;
1183 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1184
1185 memset(&oparms, 0, sizeof(oparms));
5517554e
RS		 1186 oparms.tcon = tcon;
1187 oparms.desired_access = FILE_WRITE_EA;
1188 oparms.disposition = FILE_OPEN;
0f060936 1189 oparms.create_options = cifs_create_options(cifs_sb, 0);
5517554e
RS		 1190 oparms.fid = &fid;
1191 oparms.reconnect = false;
1192
0967e545
RS		 1193 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
1194 if (rc)
1195 goto sea_exit;
e77fe73c 1196 smb2_set_next_command(tcon, &rqst[0]);
0967e545
RS		 1197
1198
1199 /* Set Info */
1200 memset(&si_iov, 0, sizeof(si_iov));
1201 rqst[1].rq_iov = si_iov;
1202 rqst[1].rq_nvec = 1;
5517554e
RS		 1203
1204 len = sizeof(ea) + ea_name_len + ea_value_len + 1;
1205 ea = kzalloc(len, GFP_KERNEL);
1206 if (ea == NULL) {
0967e545
RS		 1207 rc = -ENOMEM;
1208 goto sea_exit;
5517554e
RS		 1209 }
1210
1211 ea->ea_name_length = ea_name_len;
1212 ea->ea_value_length = cpu_to_le16(ea_value_len);
1213 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
1214 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
1215
0967e545
RS		 1216 size[0] = len;
1217 data[0] = ea;
1218
1219 rc = SMB2_set_info_init(tcon, &rqst[1], COMPOUND_FID,
1220 COMPOUND_FID, current->tgid,
1221 FILE_FULL_EA_INFORMATION,
1222 SMB2_O_INFO_FILE, 0, data, size);
e77fe73c 1223 smb2_set_next_command(tcon, &rqst[1]);
0967e545 1224 smb2_set_related(&rqst[1]);
6aa0c114 1225
5517554e 1226
0967e545
RS		 1227 /* Close */
1228 memset(&close_iov, 0, sizeof(close_iov));
1229 rqst[2].rq_iov = close_iov;
1230 rqst[2].rq_nvec = 1;
43f8a6a7 1231 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
0967e545
RS		 1232 smb2_set_related(&rqst[2]);
1233
1234 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1235 resp_buftype, rsp_iov);
d2f15428 1236 /* no need to bump num_remote_opens because handle immediately closed */
0967e545
RS		 1237
1238 sea_exit:
1239 kfree(ea);
1240 kfree(utf16_path);
1241 SMB2_open_free(&rqst[0]);
1242 SMB2_set_info_free(&rqst[1]);
1243 SMB2_close_free(&rqst[2]);
1244 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1245 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1246 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
5517554e
RS		 1247 return rc;
1248}
1368f155 1249#endif
5517554e 1250
9094fad1
PS		 1251static bool
1252smb2_can_echo(struct TCP_Server_Info *server)
1253{
1254 return server->echoes;
1255}
1256
d60622eb
PS		 1257static void
1258smb2_clear_stats(struct cifs_tcon *tcon)
1259{
d60622eb 1260 int i;
a205d500 1261
d60622eb
PS		 1262 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
1263 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
1264 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
1265 }
d60622eb
PS		 1266}
1267
769ee6a4
SF		 1268static void
1269smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
1270{
1271 seq_puts(m, "\n\tShare Capabilities:");
1272 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
1273 seq_puts(m, " DFS,");
1274 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
1275 seq_puts(m, " CONTINUOUS AVAILABILITY,");
1276 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
1277 seq_puts(m, " SCALEOUT,");
1278 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
1279 seq_puts(m, " CLUSTER,");
1280 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
1281 seq_puts(m, " ASYMMETRIC,");
1282 if (tcon->capabilities == 0)
1283 seq_puts(m, " None");
af6a12ea
SF		 1284 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
1285 seq_puts(m, " Aligned,");
1286 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
1287 seq_puts(m, " Partition Aligned,");
1288 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
1289 seq_puts(m, " SSD,");
1290 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
1291 seq_puts(m, " TRIM-support,");
1292
769ee6a4 1293 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
e0386e44 1294 seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
af6a12ea
SF		 1295 if (tcon->perf_sector_size)
1296 seq_printf(m, "\tOptimal sector size: 0x%x",
1297 tcon->perf_sector_size);
e0386e44 1298 seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
769ee6a4
SF		 1299}
1300
d60622eb
PS		 1301static void
1302smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
1303{
d60622eb
PS		 1304 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
1305 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
1995d28f
SF		 1306
1307 /*
1308 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
1309 * totals (requests sent) since those SMBs are per-session not per tcon
1310 */
52ce1ac4
SF		 1311 seq_printf(m, "\nBytes read: %llu Bytes written: %llu",
1312 (long long)(tcon->bytes_read),
1313 (long long)(tcon->bytes_written));
fae8044c
SF		 1314 seq_printf(m, "\nOpen files: %d total (local), %d open on server",
1315 atomic_read(&tcon->num_local_opens),
1316 atomic_read(&tcon->num_remote_opens));
1995d28f 1317 seq_printf(m, "\nTreeConnects: %d total %d failed",
d60622eb
PS		 1318 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
1319 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
1995d28f 1320 seq_printf(m, "\nTreeDisconnects: %d total %d failed",
d60622eb
PS		 1321 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
1322 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
1995d28f 1323 seq_printf(m, "\nCreates: %d total %d failed",
d60622eb
PS		 1324 atomic_read(&sent[SMB2_CREATE_HE]),
1325 atomic_read(&failed[SMB2_CREATE_HE]));
1995d28f 1326 seq_printf(m, "\nCloses: %d total %d failed",
d60622eb
PS		 1327 atomic_read(&sent[SMB2_CLOSE_HE]),
1328 atomic_read(&failed[SMB2_CLOSE_HE]));
1995d28f 1329 seq_printf(m, "\nFlushes: %d total %d failed",
d60622eb
PS		 1330 atomic_read(&sent[SMB2_FLUSH_HE]),
1331 atomic_read(&failed[SMB2_FLUSH_HE]));
1995d28f 1332 seq_printf(m, "\nReads: %d total %d failed",
d60622eb
PS		 1333 atomic_read(&sent[SMB2_READ_HE]),
1334 atomic_read(&failed[SMB2_READ_HE]));
1995d28f 1335 seq_printf(m, "\nWrites: %d total %d failed",
d60622eb
PS		 1336 atomic_read(&sent[SMB2_WRITE_HE]),
1337 atomic_read(&failed[SMB2_WRITE_HE]));
1995d28f 1338 seq_printf(m, "\nLocks: %d total %d failed",
d60622eb
PS		 1339 atomic_read(&sent[SMB2_LOCK_HE]),
1340 atomic_read(&failed[SMB2_LOCK_HE]));
1995d28f 1341 seq_printf(m, "\nIOCTLs: %d total %d failed",
d60622eb
PS		 1342 atomic_read(&sent[SMB2_IOCTL_HE]),
1343 atomic_read(&failed[SMB2_IOCTL_HE]));
1995d28f 1344 seq_printf(m, "\nQueryDirectories: %d total %d failed",
d60622eb
PS		 1345 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
1346 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
1995d28f 1347 seq_printf(m, "\nChangeNotifies: %d total %d failed",
d60622eb
PS		 1348 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
1349 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
1995d28f 1350 seq_printf(m, "\nQueryInfos: %d total %d failed",
d60622eb
PS		 1351 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
1352 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
1995d28f 1353 seq_printf(m, "\nSetInfos: %d total %d failed",
d60622eb
PS		 1354 atomic_read(&sent[SMB2_SET_INFO_HE]),
1355 atomic_read(&failed[SMB2_SET_INFO_HE]));
1356 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
1357 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
1358 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
d60622eb
PS		 1359}
1360
f0df737e
PS		 1361static void
1362smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
1363{
2b0143b5 1364 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
53ef1016
PS		 1365 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
1366
f0df737e
PS		 1367 cfile->fid.persistent_fid = fid->persistent_fid;
1368 cfile->fid.volatile_fid = fid->volatile_fid;
86f740f2 1369 cfile->fid.access = fid->access;
dfe33f9a
SF		 1370#ifdef CONFIG_CIFS_DEBUG2
1371 cfile->fid.mid = fid->mid;
1372#endif /* CIFS_DEBUG2 */
42873b0a
PS		 1373 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
1374 &fid->purge_cache);
18cceb6a 1375 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
94f87371 1376 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
f0df737e
PS		 1377}
1378
760ad0ca 1379static void
f0df737e
PS		 1380smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
1381 struct cifs_fid *fid)
1382{
760ad0ca 1383 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
f0df737e
PS		 1384}
1385
43f8a6a7
SF		 1386static void
1387smb2_close_getattr(const unsigned int xid, struct cifs_tcon *tcon,
1388 struct cifsFileInfo *cfile)
1389{
1390 struct smb2_file_network_open_info file_inf;
1391 struct inode *inode;
1392 int rc;
1393
1394 rc = __SMB2_close(xid, tcon, cfile->fid.persistent_fid,
1395 cfile->fid.volatile_fid, &file_inf);
1396 if (rc)
1397 return;
1398
1399 inode = d_inode(cfile->dentry);
1400
1401 spin_lock(&inode->i_lock);
1402 CIFS_I(inode)->time = jiffies;
1403
1404 /* Creation time should not need to be updated on close */
1405 if (file_inf.LastWriteTime)
1406 inode->i_mtime = cifs_NTtimeToUnix(file_inf.LastWriteTime);
1407 if (file_inf.ChangeTime)
1408 inode->i_ctime = cifs_NTtimeToUnix(file_inf.ChangeTime);
1409 if (file_inf.LastAccessTime)
1410 inode->i_atime = cifs_NTtimeToUnix(file_inf.LastAccessTime);
1411
1412 /*
1413 * i_blocks is not related to (i_size / i_blksize),
1414 * but instead 512 byte (2**9) size is required for
1415 * calculating num blocks.
1416 */
1417 if (le64_to_cpu(file_inf.AllocationSize) > 4096)
1418 inode->i_blocks =
1419 (512 - 1 + le64_to_cpu(file_inf.AllocationSize)) >> 9;
1420
1421 /* End of file and Attributes should not have to be updated on close */
1422 spin_unlock(&inode->i_lock);
1423}
1424
41c1358e
SF		 1425static int
1426SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
1427 u64 persistent_fid, u64 volatile_fid,
1428 struct copychunk_ioctl *pcchunk)
1429{
1430 int rc;
1431 unsigned int ret_data_len;
1432 struct resume_key_req *res_key;
1433
1434 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
1435 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
153322f7 1436 NULL, 0 /* no input */, CIFSMaxBufSize,
41c1358e
SF		 1437 (char **)&res_key, &ret_data_len);
1438
1439 if (rc) {
3175eb9b 1440 cifs_tcon_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
41c1358e
SF		 1441 goto req_res_key_exit;
1442 }
1443 if (ret_data_len < sizeof(struct resume_key_req)) {
3175eb9b 1444 cifs_tcon_dbg(VFS, "Invalid refcopy resume key length\n");
41c1358e
SF		 1445 rc = -EINVAL;
1446 goto req_res_key_exit;
1447 }
1448 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
1449
1450req_res_key_exit:
1451 kfree(res_key);
1452 return rc;
1453}
1454
f5b05d62
RS		 1455static int
1456smb2_ioctl_query_info(const unsigned int xid,
8d8b26e5 1457 struct cifs_tcon *tcon,
0f060936 1458 struct cifs_sb_info *cifs_sb,
8d8b26e5 1459 __le16 *path, int is_dir,
f5b05d62
RS		 1460 unsigned long p)
1461{
f5b05d62
RS		 1462 struct cifs_ses *ses = tcon->ses;
1463 char __user *arg = (char __user *)p;
1464 struct smb_query_info qi;
1465 struct smb_query_info __user *pqi;
1466 int rc = 0;
1467 int flags = 0;
f5778c39
RS		 1468 struct smb2_query_info_rsp *qi_rsp = NULL;
1469 struct smb2_ioctl_rsp *io_rsp = NULL;
8d8b26e5
RS		 1470 void *buffer = NULL;
1471 struct smb_rqst rqst[3];
1472 int resp_buftype[3];
1473 struct kvec rsp_iov[3];
1474 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
1475 struct cifs_open_parms oparms;
1476 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1477 struct cifs_fid fid;
1478 struct kvec qi_iov[1];
f5778c39 1479 struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
0e90696d 1480 struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
8d8b26e5 1481 struct kvec close_iov[1];
0e90696d
RS		 1482 unsigned int size[2];
1483 void *data[2];
0f060936 1484 int create_options = is_dir ? CREATE_NOT_FILE : CREATE_NOT_DIR;
8d8b26e5
RS		 1485
1486 memset(rqst, 0, sizeof(rqst));
1487 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1488 memset(rsp_iov, 0, sizeof(rsp_iov));
f5b05d62
RS		 1489
1490 if (copy_from_user(&qi, arg, sizeof(struct smb_query_info)))
1491 return -EFAULT;
1492
1493 if (qi.output_buffer_length > 1024)
1494 return -EINVAL;
1495
1496 if (!ses || !(ses->server))
1497 return -EIO;
1498
1499 if (smb3_encryption_required(tcon))
1500 flags |= CIFS_TRANSFORM_REQ;
1501
cfaa1181
ME		 1502 buffer = memdup_user(arg + sizeof(struct smb_query_info),
1503 qi.output_buffer_length);
1504 if (IS_ERR(buffer))
1505 return PTR_ERR(buffer);
f5b05d62 1506
8d8b26e5
RS		 1507 /* Open */
1508 memset(&open_iov, 0, sizeof(open_iov));
1509 rqst[0].rq_iov = open_iov;
1510 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1511
1512 memset(&oparms, 0, sizeof(oparms));
1513 oparms.tcon = tcon;
8d8b26e5 1514 oparms.disposition = FILE_OPEN;
0f060936 1515 oparms.create_options = cifs_create_options(cifs_sb, create_options);
8d8b26e5
RS		 1516 oparms.fid = &fid;
1517 oparms.reconnect = false;
1518
efac779b
RS		 1519 if (qi.flags & PASSTHRU_FSCTL) {
1520 switch (qi.info_type & FSCTL_DEVICE_ACCESS_MASK) {
1521 case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS:
1522 oparms.desired_access = FILE_READ_DATA | FILE_WRITE_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE;
46e66619
SF		 1523 break;
1524 case FSCTL_DEVICE_ACCESS_FILE_ANY_ACCESS:
1525 oparms.desired_access = GENERIC_ALL;
1526 break;
1527 case FSCTL_DEVICE_ACCESS_FILE_READ_ACCESS:
1528 oparms.desired_access = GENERIC_READ;
1529 break;
1530 case FSCTL_DEVICE_ACCESS_FILE_WRITE_ACCESS:
1531 oparms.desired_access = GENERIC_WRITE;
efac779b
RS		 1532 break;
1533 }
0e90696d
RS		 1534 } else if (qi.flags & PASSTHRU_SET_INFO) {
1535 oparms.desired_access = GENERIC_WRITE;
1536 } else {
1537 oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
efac779b
RS		 1538 }
1539
8d8b26e5
RS		 1540 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, path);
1541 if (rc)
1542 goto iqinf_exit;
e77fe73c 1543 smb2_set_next_command(tcon, &rqst[0]);
8d8b26e5
RS		 1544
1545 /* Query */
31ba4331
SF		 1546 if (qi.flags & PASSTHRU_FSCTL) {
1547 /* Can eventually relax perm check since server enforces too */
1548 if (!capable(CAP_SYS_ADMIN))
1549 rc = -EPERM;
f5778c39
RS		 1550 else {
1551 memset(&io_iov, 0, sizeof(io_iov));
1552 rqst[1].rq_iov = io_iov;
1553 rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
1554
1555 rc = SMB2_ioctl_init(tcon, &rqst[1],
1556 COMPOUND_FID, COMPOUND_FID,
efac779b
RS		 1557 qi.info_type, true, buffer,
1558 qi.output_buffer_length,
731b82bb
RS		 1559 CIFSMaxBufSize -
1560 MAX_SMB2_CREATE_RESPONSE_SIZE -
1561 MAX_SMB2_CLOSE_RESPONSE_SIZE);
f5778c39 1562 }
0e90696d
RS		 1563 } else if (qi.flags == PASSTHRU_SET_INFO) {
1564 /* Can eventually relax perm check since server enforces too */
1565 if (!capable(CAP_SYS_ADMIN))
1566 rc = -EPERM;
1567 else {
1568 memset(&si_iov, 0, sizeof(si_iov));
1569 rqst[1].rq_iov = si_iov;
1570 rqst[1].rq_nvec = 1;
1571
1572 size[0] = 8;
1573 data[0] = buffer;
1574
1575 rc = SMB2_set_info_init(tcon, &rqst[1],
1576 COMPOUND_FID, COMPOUND_FID,
1577 current->tgid,
1578 FILE_END_OF_FILE_INFORMATION,
1579 SMB2_O_INFO_FILE, 0, data, size);
1580 }
31ba4331
SF		 1581 } else if (qi.flags == PASSTHRU_QUERY_INFO) {
1582 memset(&qi_iov, 0, sizeof(qi_iov));
1583 rqst[1].rq_iov = qi_iov;
1584 rqst[1].rq_nvec = 1;
1585
1586 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID,
1587 COMPOUND_FID, qi.file_info_class,
1588 qi.info_type, qi.additional_information,
f5b05d62
RS		 1589 qi.input_buffer_length,
1590 qi.output_buffer_length, buffer);
31ba4331 1591 } else { /* unknown flags */
3175eb9b 1592 cifs_tcon_dbg(VFS, "invalid passthru query flags: 0x%x\n", qi.flags);
31ba4331
SF		 1593 rc = -EINVAL;
1594 }
1595
f5b05d62
RS		 1596 if (rc)
1597 goto iqinf_exit;
e77fe73c 1598 smb2_set_next_command(tcon, &rqst[1]);
8d8b26e5
RS		 1599 smb2_set_related(&rqst[1]);
1600
1601 /* Close */
1602 memset(&close_iov, 0, sizeof(close_iov));
1603 rqst[2].rq_iov = close_iov;
1604 rqst[2].rq_nvec = 1;
f5b05d62 1605
43f8a6a7 1606 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
f5b05d62
RS		 1607 if (rc)
1608 goto iqinf_exit;
8d8b26e5 1609 smb2_set_related(&rqst[2]);
f5b05d62 1610
8d8b26e5
RS		 1611 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1612 resp_buftype, rsp_iov);
1613 if (rc)
1614 goto iqinf_exit;
d2f15428
SF		 1615
1616 /* No need to bump num_remote_opens since handle immediately closed */
f5778c39
RS		 1617 if (qi.flags & PASSTHRU_FSCTL) {
1618 pqi = (struct smb_query_info __user *)arg;
1619 io_rsp = (struct smb2_ioctl_rsp *)rsp_iov[1].iov_base;
1620 if (le32_to_cpu(io_rsp->OutputCount) < qi.input_buffer_length)
1621 qi.input_buffer_length = le32_to_cpu(io_rsp->OutputCount);
5242fcb7 1622 if (qi.input_buffer_length > 0 &&
2b1116bb
ME		 1623 le32_to_cpu(io_rsp->OutputOffset) + qi.input_buffer_length
1624 > rsp_iov[1].iov_len)
1625 goto e_fault;
1626
1627 if (copy_to_user(&pqi->input_buffer_length,
1628 &qi.input_buffer_length,
1629 sizeof(qi.input_buffer_length)))
1630 goto e_fault;
1631
5242fcb7
RS		 1632 if (copy_to_user((void __user *)pqi + sizeof(struct smb_query_info),
1633 (const void *)io_rsp + le32_to_cpu(io_rsp->OutputOffset),
2b1116bb
ME		 1634 qi.input_buffer_length))
1635 goto e_fault;
f5778c39
RS		 1636 } else {
1637 pqi = (struct smb_query_info __user *)arg;
1638 qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
1639 if (le32_to_cpu(qi_rsp->OutputBufferLength) < qi.input_buffer_length)
1640 qi.input_buffer_length = le32_to_cpu(qi_rsp->OutputBufferLength);
2b1116bb
ME		 1641 if (copy_to_user(&pqi->input_buffer_length,
1642 &qi.input_buffer_length,
1643 sizeof(qi.input_buffer_length)))
1644 goto e_fault;
1645
1646 if (copy_to_user(pqi + 1, qi_rsp->Buffer,
1647 qi.input_buffer_length))
1648 goto e_fault;
f5b05d62
RS		 1649 }
1650
1651 iqinf_exit:
8d8b26e5
RS		 1652 kfree(buffer);
1653 SMB2_open_free(&rqst[0]);
f5778c39
RS		 1654 if (qi.flags & PASSTHRU_FSCTL)
1655 SMB2_ioctl_free(&rqst[1]);
1656 else
1657 SMB2_query_info_free(&rqst[1]);
1658
8d8b26e5
RS		 1659 SMB2_close_free(&rqst[2]);
1660 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1661 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1662 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
f5b05d62 1663 return rc;
2b1116bb
ME		 1664
1665e_fault:
1666 rc = -EFAULT;
1667 goto iqinf_exit;
f5b05d62
RS		 1668}
1669
620d8745 1670static ssize_t
312bbc59 1671smb2_copychunk_range(const unsigned int xid,
41c1358e
SF		 1672 struct cifsFileInfo *srcfile,
1673 struct cifsFileInfo *trgtfile, u64 src_off,
1674 u64 len, u64 dest_off)
1675{
1676 int rc;
1677 unsigned int ret_data_len;
1678 struct copychunk_ioctl *pcchunk;
9bf0c9cd
SF		 1679 struct copychunk_ioctl_rsp *retbuf = NULL;
1680 struct cifs_tcon *tcon;
1681 int chunks_copied = 0;
1682 bool chunk_sizes_updated = false;
620d8745 1683 ssize_t bytes_written, total_bytes_written = 0;
41c1358e
SF		 1684
1685 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
1686
1687 if (pcchunk == NULL)
1688 return -ENOMEM;
1689
a205d500 1690 cifs_dbg(FYI, "%s: about to call request res key\n", __func__);
41c1358e
SF		 1691 /* Request a key from the server to identify the source of the copy */
1692 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
1693 srcfile->fid.persistent_fid,
1694 srcfile->fid.volatile_fid, pcchunk);
1695
1696 /* Note: request_res_key sets res_key null only if rc !=0 */
1697 if (rc)
9bf0c9cd 1698 goto cchunk_out;
41c1358e
SF		 1699
1700 /* For now array only one chunk long, will make more flexible later */
bc09d141 1701 pcchunk->ChunkCount = cpu_to_le32(1);
41c1358e 1702 pcchunk->Reserved = 0;
41c1358e
SF		 1703 pcchunk->Reserved2 = 0;
1704
9bf0c9cd 1705 tcon = tlink_tcon(trgtfile->tlink);
41c1358e 1706
9bf0c9cd
SF		 1707 while (len > 0) {
1708 pcchunk->SourceOffset = cpu_to_le64(src_off);
1709 pcchunk->TargetOffset = cpu_to_le64(dest_off);
1710 pcchunk->Length =
1711 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
41c1358e 1712
9bf0c9cd
SF		 1713 /* Request server copy to target from src identified by key */
1714 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1715 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
63a83b86 1716 true /* is_fsctl */, (char *)pcchunk,
153322f7
SF		 1717 sizeof(struct copychunk_ioctl), CIFSMaxBufSize,
1718 (char **)&retbuf, &ret_data_len);
9bf0c9cd
SF		 1719 if (rc == 0) {
1720 if (ret_data_len !=
1721 sizeof(struct copychunk_ioctl_rsp)) {
3175eb9b 1722 cifs_tcon_dbg(VFS, "invalid cchunk response size\n");
9bf0c9cd
SF		 1723 rc = -EIO;
1724 goto cchunk_out;
1725 }
1726 if (retbuf->TotalBytesWritten == 0) {
1727 cifs_dbg(FYI, "no bytes copied\n");
1728 rc = -EIO;
1729 goto cchunk_out;
1730 }
1731 /*
1732 * Check if server claimed to write more than we asked
1733 */
1734 if (le32_to_cpu(retbuf->TotalBytesWritten) >
1735 le32_to_cpu(pcchunk->Length)) {
3175eb9b 1736 cifs_tcon_dbg(VFS, "invalid copy chunk response\n");
9bf0c9cd
SF		 1737 rc = -EIO;
1738 goto cchunk_out;
1739 }
1740 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
3175eb9b 1741 cifs_tcon_dbg(VFS, "invalid num chunks written\n");
9bf0c9cd
SF		 1742 rc = -EIO;
1743 goto cchunk_out;
1744 }
1745 chunks_copied++;
1746
620d8745
SP		 1747 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
1748 src_off += bytes_written;
1749 dest_off += bytes_written;
1750 len -= bytes_written;
1751 total_bytes_written += bytes_written;
9bf0c9cd 1752
620d8745 1753 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
9bf0c9cd
SF		 1754 le32_to_cpu(retbuf->ChunksWritten),
1755 le32_to_cpu(retbuf->ChunkBytesWritten),
620d8745 1756 bytes_written);
9bf0c9cd
SF		 1757 } else if (rc == -EINVAL) {
1758 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
1759 goto cchunk_out;
1760
1761 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1762 le32_to_cpu(retbuf->ChunksWritten),
1763 le32_to_cpu(retbuf->ChunkBytesWritten),
1764 le32_to_cpu(retbuf->TotalBytesWritten));
1765
1766 /*
1767 * Check if this is the first request using these sizes,
1768 * (ie check if copy succeed once with original sizes
1769 * and check if the server gave us different sizes after
1770 * we already updated max sizes on previous request).
1771 * if not then why is the server returning an error now
1772 */
1773 if ((chunks_copied != 0) || chunk_sizes_updated)
1774 goto cchunk_out;
1775
1776 /* Check that server is not asking us to grow size */
1777 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
1778 tcon->max_bytes_chunk)
1779 tcon->max_bytes_chunk =
1780 le32_to_cpu(retbuf->ChunkBytesWritten);
1781 else
1782 goto cchunk_out; /* server gave us bogus size */
1783
1784 /* No need to change MaxChunks since already set to 1 */
1785 chunk_sizes_updated = true;
2477bc58
SP		 1786 } else
1787 goto cchunk_out;
9bf0c9cd 1788 }
41c1358e 1789
9bf0c9cd 1790cchunk_out:
41c1358e 1791 kfree(pcchunk);
24df1483 1792 kfree(retbuf);
620d8745
SP		 1793 if (rc)
1794 return rc;
1795 else
1796 return total_bytes_written;
41c1358e
SF		 1797}
1798
7a5cfb19
PS		 1799static int
1800smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1801 struct cifs_fid *fid)
1802{
1803 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1804}
1805
09a4707e
PS		 1806static unsigned int
1807smb2_read_data_offset(char *buf)
1808{
1809 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
a205d500 1810
09a4707e
PS		 1811 return rsp->DataOffset;
1812}
1813
1814static unsigned int
74dcf418 1815smb2_read_data_length(char *buf, bool in_remaining)
09a4707e
PS		 1816{
1817 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
74dcf418
LL		 1818
1819 if (in_remaining)
1820 return le32_to_cpu(rsp->DataRemaining);
1821
09a4707e
PS		 1822 return le32_to_cpu(rsp->DataLength);
1823}
1824
d8e05039
PS		 1825
1826static int
db8b631d 1827smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
d8e05039
PS		 1828 struct cifs_io_parms *parms, unsigned int *bytes_read,
1829 char **buf, int *buf_type)
1830{
db8b631d
SF		 1831 parms->persistent_fid = pfid->persistent_fid;
1832 parms->volatile_fid = pfid->volatile_fid;
d8e05039
PS		 1833 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1834}
1835
009d3443 1836static int
db8b631d 1837smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
009d3443
PS		 1838 struct cifs_io_parms *parms, unsigned int *written,
1839 struct kvec *iov, unsigned long nr_segs)
1840{
1841
db8b631d
SF		 1842 parms->persistent_fid = pfid->persistent_fid;
1843 parms->volatile_fid = pfid->volatile_fid;
009d3443
PS		 1844 return SMB2_write(xid, parms, written, iov, nr_segs);
1845}
1846
d43cc793
SF		 1847/* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1848static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1849 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1850{
1851 struct cifsInodeInfo *cifsi;
1852 int rc;
1853
1854 cifsi = CIFS_I(inode);
1855
1856 /* if file already sparse don't bother setting sparse again */
1857 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1858 return true; /* already sparse */
1859
1860 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1861 return true; /* already not sparse */
1862
1863 /*
1864 * Can't check for sparse support on share the usual way via the
1865 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1866 * since Samba server doesn't set the flag on the share, yet
1867 * supports the set sparse FSCTL and returns sparse correctly
1868 * in the file attributes. If we fail setting sparse though we
1869 * mark that server does not support sparse files for this share
1870 * to avoid repeatedly sending the unsupported fsctl to server
1871 * if the file is repeatedly extended.
1872 */
1873 if (tcon->broken_sparse_sup)
1874 return false;
1875
1876 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1877 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
63a83b86 1878 true /* is_fctl */,
153322f7 1879 &setsparse, 1, CIFSMaxBufSize, NULL, NULL);
d43cc793
SF		 1880 if (rc) {
1881 tcon->broken_sparse_sup = true;
1882 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1883 return false;
1884 }
1885
1886 if (setsparse)
1887 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1888 else
1889 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1890
1891 return true;
1892}
1893
c839ff24
PS		 1894static int
1895smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1896 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1897{
1898 __le64 eof = cpu_to_le64(size);
3d1a3745
SF		 1899 struct inode *inode;
1900
1901 /*
1902 * If extending file more than one page make sparse. Many Linux fs
1903 * make files sparse by default when extending via ftruncate
1904 */
2b0143b5 1905 inode = d_inode(cfile->dentry);
3d1a3745
SF		 1906
1907 if (!set_alloc && (size > inode->i_size + 8192)) {
3d1a3745 1908 __u8 set_sparse = 1;
d43cc793
SF		 1909
1910 /* whether set sparse succeeds or not, extend the file */
1911 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
3d1a3745
SF		 1912 }
1913
c839ff24 1914 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3764cbd1 1915 cfile->fid.volatile_fid, cfile->pid, &eof);
c839ff24
PS		 1916}
1917
02b16665
SF		 1918static int
1919smb2_duplicate_extents(const unsigned int xid,
1920 struct cifsFileInfo *srcfile,
1921 struct cifsFileInfo *trgtfile, u64 src_off,
1922 u64 len, u64 dest_off)
1923{
1924 int rc;
1925 unsigned int ret_data_len;
02b16665
SF		 1926 struct duplicate_extents_to_file dup_ext_buf;
1927 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1928
1929 /* server fileays advertise duplicate extent support with this flag */
1930 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1931 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1932 return -EOPNOTSUPP;
1933
1934 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1935 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1936 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1937 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1938 dup_ext_buf.ByteCount = cpu_to_le64(len);
a205d500 1939 cifs_dbg(FYI, "Duplicate extents: src off %lld dst off %lld len %lld\n",
02b16665
SF		 1940 src_off, dest_off, len);
1941
1942 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1943 if (rc)
1944 goto duplicate_extents_out;
1945
1946 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1947 trgtfile->fid.volatile_fid,
1948 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
63a83b86 1949 true /* is_fsctl */,
51146625 1950 (char *)&dup_ext_buf,
02b16665 1951 sizeof(struct duplicate_extents_to_file),
153322f7 1952 CIFSMaxBufSize, NULL,
02b16665
SF		 1953 &ret_data_len);
1954
1955 if (ret_data_len > 0)
a205d500 1956 cifs_dbg(FYI, "Non-zero response length in duplicate extents\n");
02b16665
SF		 1957
1958duplicate_extents_out:
1959 return rc;
1960}
02b16665 1961
64a5cfa6
SF		 1962static int
1963smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
1964 struct cifsFileInfo *cfile)
1965{
1966 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
1967 cfile->fid.volatile_fid);
1968}
1969
b3152e2c
SF		 1970static int
1971smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
1972 struct cifsFileInfo *cfile)
1973{
1974 struct fsctl_set_integrity_information_req integr_info;
b3152e2c
SF		 1975 unsigned int ret_data_len;
1976
1977 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
1978 integr_info.Flags = 0;
1979 integr_info.Reserved = 0;
1980
1981 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1982 cfile->fid.volatile_fid,
1983 FSCTL_SET_INTEGRITY_INFORMATION,
63a83b86 1984 true /* is_fsctl */,
51146625 1985 (char *)&integr_info,
b3152e2c 1986 sizeof(struct fsctl_set_integrity_information_req),
153322f7 1987 CIFSMaxBufSize, NULL,
b3152e2c
SF		 1988 &ret_data_len);
1989
1990}
1991
e02789a5
SF		 1992/* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
1993#define GMT_TOKEN_SIZE 50
1994
153322f7
SF		 1995#define MIN_SNAPSHOT_ARRAY_SIZE 16 /* See MS-SMB2 section 3.3.5.15.1 */
1996
e02789a5
SF		 1997/*
1998 * Input buffer contains (empty) struct smb_snapshot array with size filled in
1999 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
2000 */
834170c8
SF		 2001static int
2002smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
2003 struct cifsFileInfo *cfile, void __user *ioc_buf)
2004{
2005 char *retbuf = NULL;
2006 unsigned int ret_data_len = 0;
2007 int rc;
153322f7 2008 u32 max_response_size;
834170c8
SF		 2009 struct smb_snapshot_array snapshot_in;
2010
973189ab
SF		 2011 /*
2012 * On the first query to enumerate the list of snapshots available
2013 * for this volume the buffer begins with 0 (number of snapshots
2014 * which can be returned is zero since at that point we do not know
2015 * how big the buffer needs to be). On the second query,
2016 * it (ret_data_len) is set to number of snapshots so we can
2017 * know to set the maximum response size larger (see below).
2018 */
153322f7
SF		 2019 if (get_user(ret_data_len, (unsigned int __user *)ioc_buf))
2020 return -EFAULT;
2021
2022 /*
2023 * Note that for snapshot queries that servers like Azure expect that
2024 * the first query be minimal size (and just used to get the number/size
2025 * of previous versions) so response size must be specified as EXACTLY
2026 * sizeof(struct snapshot_array) which is 16 when rounded up to multiple
2027 * of eight bytes.
2028 */
2029 if (ret_data_len == 0)
2030 max_response_size = MIN_SNAPSHOT_ARRAY_SIZE;
2031 else
2032 max_response_size = CIFSMaxBufSize;
2033
834170c8
SF		 2034 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2035 cfile->fid.volatile_fid,
2036 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
63a83b86 2037 true /* is_fsctl */,
153322f7 2038 NULL, 0 /* no input data */, max_response_size,
834170c8
SF		 2039 (char **)&retbuf,
2040 &ret_data_len);
2041 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
2042 rc, ret_data_len);
2043 if (rc)
2044 return rc;
2045
2046 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
2047 /* Fixup buffer */
2048 if (copy_from_user(&snapshot_in, ioc_buf,
2049 sizeof(struct smb_snapshot_array))) {
2050 rc = -EFAULT;
2051 kfree(retbuf);
2052 return rc;
2053 }
834170c8 2054
e02789a5
SF		 2055 /*
2056 * Check for min size, ie not large enough to fit even one GMT
2057 * token (snapshot). On the first ioctl some users may pass in
2058 * smaller size (or zero) to simply get the size of the array
2059 * so the user space caller can allocate sufficient memory
2060 * and retry the ioctl again with larger array size sufficient
2061 * to hold all of the snapshot GMT tokens on the second try.
2062 */
2063 if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
2064 ret_data_len = sizeof(struct smb_snapshot_array);
2065
2066 /*
2067 * We return struct SRV_SNAPSHOT_ARRAY, followed by
2068 * the snapshot array (of 50 byte GMT tokens) each
2069 * representing an available previous version of the data
2070 */
2071 if (ret_data_len > (snapshot_in.snapshot_array_size +
2072 sizeof(struct smb_snapshot_array)))
2073 ret_data_len = snapshot_in.snapshot_array_size +
2074 sizeof(struct smb_snapshot_array);
834170c8
SF		 2075
2076 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
2077 rc = -EFAULT;
2078 }
2079
2080 kfree(retbuf);
2081 return rc;
2082}
2083
d26c2ddd
SF		 2084
2085
2086static int
2087smb3_notify(const unsigned int xid, struct file *pfile,
2088 void __user *ioc_buf)
2089{
2090 struct smb3_notify notify;
2091 struct dentry *dentry = pfile->f_path.dentry;
2092 struct inode *inode = file_inode(pfile);
2093 struct cifs_sb_info *cifs_sb;
2094 struct cifs_open_parms oparms;
2095 struct cifs_fid fid;
2096 struct cifs_tcon *tcon;
2097 unsigned char *path = NULL;
2098 __le16 *utf16_path = NULL;
2099 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2100 int rc = 0;
2101
2102 path = build_path_from_dentry(dentry);
2103 if (path == NULL)
2104 return -ENOMEM;
2105
2106 cifs_sb = CIFS_SB(inode->i_sb);
2107
2108 utf16_path = cifs_convert_path_to_utf16(path + 1, cifs_sb);
2109 if (utf16_path == NULL) {
2110 rc = -ENOMEM;
2111 goto notify_exit;
2112 }
2113
2114 if (copy_from_user(&notify, ioc_buf, sizeof(struct smb3_notify))) {
2115 rc = -EFAULT;
2116 goto notify_exit;
2117 }
2118
2119 tcon = cifs_sb_master_tcon(cifs_sb);
2120 oparms.tcon = tcon;
2121 oparms.desired_access = FILE_READ_ATTRIBUTES;
2122 oparms.disposition = FILE_OPEN;
2123 oparms.create_options = cifs_create_options(cifs_sb, 0);
2124 oparms.fid = &fid;
2125 oparms.reconnect = false;
2126
69dda305
AA		 2127 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
2128 NULL);
d26c2ddd
SF		 2129 if (rc)
2130 goto notify_exit;
2131
2132 rc = SMB2_change_notify(xid, tcon, fid.persistent_fid, fid.volatile_fid,
2133 notify.watch_tree, notify.completion_filter);
2134
2135 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2136
2137 cifs_dbg(FYI, "change notify for path %s rc %d\n", path, rc);
2138
2139notify_exit:
2140 kfree(path);
2141 kfree(utf16_path);
2142 return rc;
2143}
2144
d324f08d
PS		 2145static int
2146smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
2147 const char *path, struct cifs_sb_info *cifs_sb,
2148 struct cifs_fid *fid, __u16 search_flags,
2149 struct cifs_search_info *srch_inf)
2150{
2151 __le16 *utf16_path;
37478608
RS		 2152 struct smb_rqst rqst[2];
2153 struct kvec rsp_iov[2];
2154 int resp_buftype[2];
2155 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
2156 struct kvec qd_iov[SMB2_QUERY_DIRECTORY_IOV_SIZE];
2157 int rc, flags = 0;
2158 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047 2159 struct cifs_open_parms oparms;
37478608
RS		 2160 struct smb2_query_directory_rsp *qd_rsp = NULL;
2161 struct smb2_create_rsp *op_rsp = NULL;
d324f08d
PS		 2162
2163 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2164 if (!utf16_path)
2165 return -ENOMEM;
2166
37478608
RS		 2167 if (smb3_encryption_required(tcon))
2168 flags |= CIFS_TRANSFORM_REQ;
2169
2170 memset(rqst, 0, sizeof(rqst));
2171 resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
2172 memset(rsp_iov, 0, sizeof(rsp_iov));
2173
2174 /* Open */
2175 memset(&open_iov, 0, sizeof(open_iov));
2176 rqst[0].rq_iov = open_iov;
2177 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
2178
064f6047
PS		 2179 oparms.tcon = tcon;
2180 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
2181 oparms.disposition = FILE_OPEN;
0f060936 2182 oparms.create_options = cifs_create_options(cifs_sb, 0);
064f6047 2183 oparms.fid = fid;
9cbc0b73 2184 oparms.reconnect = false;
064f6047 2185
37478608
RS		 2186 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
2187 if (rc)
2188 goto qdf_free;
2189 smb2_set_next_command(tcon, &rqst[0]);
d324f08d 2190
37478608 2191 /* Query directory */
d324f08d 2192 srch_inf->entries_in_buffer = 0;
0595751f 2193 srch_inf->index_of_last_entry = 2;
d324f08d 2194
37478608
RS		 2195 memset(&qd_iov, 0, sizeof(qd_iov));
2196 rqst[1].rq_iov = qd_iov;
2197 rqst[1].rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE;
2198
2199 rc = SMB2_query_directory_init(xid, tcon, &rqst[1],
2200 COMPOUND_FID, COMPOUND_FID,
2201 0, srch_inf->info_level);
2202 if (rc)
2203 goto qdf_free;
2204
2205 smb2_set_related(&rqst[1]);
2206
2207 rc = compound_send_recv(xid, tcon->ses, flags, 2, rqst,
2208 resp_buftype, rsp_iov);
2209
2210 /* If the open failed there is nothing to do */
2211 op_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
2212 if (op_rsp == NULL || op_rsp->sync_hdr.Status != STATUS_SUCCESS) {
2213 cifs_dbg(FYI, "query_dir_first: open failed rc=%d\n", rc);
2214 goto qdf_free;
2215 }
2216 fid->persistent_fid = op_rsp->PersistentFileId;
2217 fid->volatile_fid = op_rsp->VolatileFileId;
2218
2219 /* Anything else than ENODATA means a genuine error */
2220 if (rc && rc != -ENODATA) {
064f6047 2221 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
37478608
RS		 2222 cifs_dbg(FYI, "query_dir_first: query directory failed rc=%d\n", rc);
2223 trace_smb3_query_dir_err(xid, fid->persistent_fid,
2224 tcon->tid, tcon->ses->Suid, 0, 0, rc);
2225 goto qdf_free;
2226 }
2227
1be1fa42
SP		 2228 atomic_inc(&tcon->num_remote_opens);
2229
37478608
RS		 2230 qd_rsp = (struct smb2_query_directory_rsp *)rsp_iov[1].iov_base;
2231 if (qd_rsp->sync_hdr.Status == STATUS_NO_MORE_FILES) {
2232 trace_smb3_query_dir_done(xid, fid->persistent_fid,
2233 tcon->tid, tcon->ses->Suid, 0, 0);
2234 srch_inf->endOfSearch = true;
2235 rc = 0;
2236 goto qdf_free;
2237 }
2238
2239 rc = smb2_parse_query_directory(tcon, &rsp_iov[1], resp_buftype[1],
2240 srch_inf);
2241 if (rc) {
2242 trace_smb3_query_dir_err(xid, fid->persistent_fid, tcon->tid,
2243 tcon->ses->Suid, 0, 0, rc);
2244 goto qdf_free;
d324f08d 2245 }
37478608
RS		 2246 resp_buftype[1] = CIFS_NO_BUFFER;
2247
2248 trace_smb3_query_dir_done(xid, fid->persistent_fid, tcon->tid,
2249 tcon->ses->Suid, 0, srch_inf->entries_in_buffer);
2250
2251 qdf_free:
2252 kfree(utf16_path);
2253 SMB2_open_free(&rqst[0]);
2254 SMB2_query_directory_free(&rqst[1]);
2255 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2256 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
d324f08d
PS		 2257 return rc;
2258}
2259
2260static int
2261smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
2262 struct cifs_fid *fid, __u16 search_flags,
2263 struct cifs_search_info *srch_inf)
2264{
2265 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
2266 fid->volatile_fid, 0, srch_inf);
2267}
2268
2269static int
2270smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
2271 struct cifs_fid *fid)
2272{
2273 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
2274}
2275
2e44b288 2276/*
a205d500
CP		 2277 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
2278 * the number of credits and return true. Otherwise - return false.
2279 */
2e44b288 2280static bool
66265f13 2281smb2_is_status_pending(char *buf, struct TCP_Server_Info *server)
2e44b288 2282{
49f466bd 2283 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2e44b288 2284
31473fc4 2285 if (shdr->Status != STATUS_PENDING)
2e44b288
PS		 2286 return false;
2287
66265f13 2288 if (shdr->CreditRequest) {
2e44b288 2289 spin_lock(&server->req_lock);
31473fc4 2290 server->credits += le16_to_cpu(shdr->CreditRequest);
2e44b288
PS		 2291 spin_unlock(&server->req_lock);
2292 wake_up(&server->request_q);
2293 }
2294
2295 return true;
2296}
2297
511c54a2
PS		 2298static bool
2299smb2_is_session_expired(char *buf)
2300{
49f466bd 2301 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
511c54a2 2302
d81243c6
MS		 2303 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
2304 shdr->Status != STATUS_USER_SESSION_DELETED)
511c54a2
PS		 2305 return false;
2306
e68a932b
SF		 2307 trace_smb3_ses_expired(shdr->TreeId, shdr->SessionId,
2308 le16_to_cpu(shdr->Command),
2309 le64_to_cpu(shdr->MessageId));
d81243c6 2310 cifs_dbg(FYI, "Session expired or deleted\n");
e68a932b 2311
511c54a2
PS		 2312 return true;
2313}
2314
983c88a4
PS		 2315static int
2316smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
2317 struct cifsInodeInfo *cinode)
2318{
0822f514
PS		 2319 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
2320 return SMB2_lease_break(0, tcon, cinode->lease_key,
2321 smb2_get_lease_state(cinode));
2322
983c88a4
PS		 2323 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
2324 fid->volatile_fid,
18cceb6a 2325 CIFS_CACHE_READ(cinode) ? 1 : 0);
983c88a4
PS		 2326}
2327
c5a5f38f 2328void
730928c8
RS		 2329smb2_set_related(struct smb_rqst *rqst)
2330{
2331 struct smb2_sync_hdr *shdr;
2332
2333 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
88a92c91
RS		 2334 if (shdr == NULL) {
2335 cifs_dbg(FYI, "shdr NULL in smb2_set_related\n");
2336 return;
2337 }
730928c8
RS		 2338 shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
2339}
2340
2341char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
2342
c5a5f38f 2343void
e77fe73c 2344smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst)
730928c8
RS		 2345{
2346 struct smb2_sync_hdr *shdr;
e77fe73c
RS		 2347 struct cifs_ses *ses = tcon->ses;
2348 struct TCP_Server_Info *server = ses->server;
730928c8 2349 unsigned long len = smb_rqst_len(server, rqst);
e77fe73c 2350 int i, num_padding;
730928c8 2351
88a92c91
RS		 2352 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
2353 if (shdr == NULL) {
2354 cifs_dbg(FYI, "shdr NULL in smb2_set_next_command\n");
2355 return;
2356 }
2357
730928c8 2358 /* SMB headers in a compound are 8 byte aligned. */
e77fe73c
RS		 2359
2360 /* No padding needed */
2361 if (!(len & 7))
2362 goto finished;
2363
2364 num_padding = 8 - (len & 7);
2365 if (!smb3_encryption_required(tcon)) {
2366 /*
2367 * If we do not have encryption then we can just add an extra
2368 * iov for the padding.
2369 */
2370 rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
2371 rqst->rq_iov[rqst->rq_nvec].iov_len = num_padding;
2372 rqst->rq_nvec++;
2373 len += num_padding;
2374 } else {
2375 /*
2376 * We can not add a small padding iov for the encryption case
2377 * because the encryption framework can not handle the padding
2378 * iovs.
2379 * We have to flatten this into a single buffer and add
2380 * the padding to it.
2381 */
2382 for (i = 1; i < rqst->rq_nvec; i++) {
2383 memcpy(rqst->rq_iov[0].iov_base +
2384 rqst->rq_iov[0].iov_len,
2385 rqst->rq_iov[i].iov_base,
2386 rqst->rq_iov[i].iov_len);
2387 rqst->rq_iov[0].iov_len += rqst->rq_iov[i].iov_len;
271b9c0c 2388 }
e77fe73c
RS		 2389 memset(rqst->rq_iov[0].iov_base + rqst->rq_iov[0].iov_len,
2390 0, num_padding);
2391 rqst->rq_iov[0].iov_len += num_padding;
2392 len += num_padding;
2393 rqst->rq_nvec = 1;
730928c8
RS		 2394 }
2395
e77fe73c 2396 finished:
730928c8
RS		 2397 shdr->NextCommand = cpu_to_le32(len);
2398}
2399
07d3b2e4
RS		 2400/*
2401 * Passes the query info response back to the caller on success.
2402 * Caller need to free this with free_rsp_buf().
2403 */
f9793b6f 2404int
07d3b2e4
RS		 2405smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
2406 __le16 *utf16_path, u32 desired_access,
2407 u32 class, u32 type, u32 output_len,
f9793b6f
RS		 2408 struct kvec *rsp, int *buftype,
2409 struct cifs_sb_info *cifs_sb)
6fc05c25 2410{
07d3b2e4 2411 struct cifs_ses *ses = tcon->ses;
07d3b2e4 2412 int flags = 0;
730928c8
RS		 2413 struct smb_rqst rqst[3];
2414 int resp_buftype[3];
2415 struct kvec rsp_iov[3];
4d8dfafc 2416 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
730928c8
RS		 2417 struct kvec qi_iov[1];
2418 struct kvec close_iov[1];
6fc05c25 2419 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 2420 struct cifs_open_parms oparms;
2421 struct cifs_fid fid;
730928c8
RS		 2422 int rc;
2423
2424 if (smb3_encryption_required(tcon))
2425 flags |= CIFS_TRANSFORM_REQ;
2426
2427 memset(rqst, 0, sizeof(rqst));
c5a5f38f 2428 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
730928c8
RS		 2429 memset(rsp_iov, 0, sizeof(rsp_iov));
2430
2431 memset(&open_iov, 0, sizeof(open_iov));
2432 rqst[0].rq_iov = open_iov;
4d8dfafc 2433 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
064f6047
PS		 2434
2435 oparms.tcon = tcon;
07d3b2e4 2436 oparms.desired_access = desired_access;
064f6047 2437 oparms.disposition = FILE_OPEN;
0f060936 2438 oparms.create_options = cifs_create_options(cifs_sb, 0);
064f6047 2439 oparms.fid = &fid;
9cbc0b73 2440 oparms.reconnect = false;
6fc05c25 2441
07d3b2e4 2442 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
6fc05c25 2443 if (rc)
07d3b2e4 2444 goto qic_exit;
e77fe73c 2445 smb2_set_next_command(tcon, &rqst[0]);
730928c8
RS		 2446
2447 memset(&qi_iov, 0, sizeof(qi_iov));
2448 rqst[1].rq_iov = qi_iov;
2449 rqst[1].rq_nvec = 1;
2450
2451 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
07d3b2e4
RS		 2452 class, type, 0,
2453 output_len, 0,
f5b05d62 2454 NULL);
730928c8 2455 if (rc)
07d3b2e4 2456 goto qic_exit;
e77fe73c 2457 smb2_set_next_command(tcon, &rqst[1]);
730928c8
RS		 2458 smb2_set_related(&rqst[1]);
2459
2460 memset(&close_iov, 0, sizeof(close_iov));
2461 rqst[2].rq_iov = close_iov;
2462 rqst[2].rq_nvec = 1;
2463
43f8a6a7 2464 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
730928c8 2465 if (rc)
07d3b2e4 2466 goto qic_exit;
730928c8
RS		 2467 smb2_set_related(&rqst[2]);
2468
2469 rc = compound_send_recv(xid, ses, flags, 3, rqst,
2470 resp_buftype, rsp_iov);
f9793b6f
RS		 2471 if (rc) {
2472 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
7dcc82c2
SF		 2473 if (rc == -EREMCHG) {
2474 tcon->need_reconnect = true;
2475 printk_once(KERN_WARNING "server share %s deleted\n",
2476 tcon->treeName);
2477 }
07d3b2e4 2478 goto qic_exit;
f9793b6f 2479 }
07d3b2e4
RS		 2480 *rsp = rsp_iov[1];
2481 *buftype = resp_buftype[1];
2482
2483 qic_exit:
2484 SMB2_open_free(&rqst[0]);
2485 SMB2_query_info_free(&rqst[1]);
2486 SMB2_close_free(&rqst[2]);
2487 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2488 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
2489 return rc;
2490}
2491
2492static int
2493smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
0f060936 2494 struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
07d3b2e4
RS		 2495{
2496 struct smb2_query_info_rsp *rsp;
2497 struct smb2_fs_full_size_info *info = NULL;
2498 __le16 utf16_path = 0; /* Null - open root of share */
2499 struct kvec rsp_iov = {NULL, 0};
2500 int buftype = CIFS_NO_BUFFER;
2501 int rc;
2502
2503
2504 rc = smb2_query_info_compound(xid, tcon, &utf16_path,
2505 FILE_READ_ATTRIBUTES,
2506 FS_FULL_SIZE_INFORMATION,
2507 SMB2_O_INFO_FILESYSTEM,
2508 sizeof(struct smb2_fs_full_size_info),
87f93d82 2509 &rsp_iov, &buftype, cifs_sb);
730928c8
RS		 2510 if (rc)
2511 goto qfs_exit;
2512
07d3b2e4 2513 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
6fc05c25 2514 buf->f_type = SMB2_MAGIC_NUMBER;
730928c8
RS		 2515 info = (struct smb2_fs_full_size_info *)(
2516 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
2517 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
2518 le32_to_cpu(rsp->OutputBufferLength),
07d3b2e4 2519 &rsp_iov,
730928c8
RS		 2520 sizeof(struct smb2_fs_full_size_info));
2521 if (!rc)
2522 smb2_copy_fs_info_to_kstatfs(info, buf);
2523
2524qfs_exit:
07d3b2e4 2525 free_rsp_buf(buftype, rsp_iov.iov_base);
6fc05c25
PS		 2526 return rc;
2527}
2528
2d304217
SF		 2529static int
2530smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
0f060936 2531 struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
2d304217
SF		 2532{
2533 int rc;
2534 __le16 srch_path = 0; /* Null - open root of share */
2535 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2536 struct cifs_open_parms oparms;
2537 struct cifs_fid fid;
2538
2539 if (!tcon->posix_extensions)
0f060936 2540 return smb2_queryfs(xid, tcon, cifs_sb, buf);
2d304217
SF		 2541
2542 oparms.tcon = tcon;
2543 oparms.desired_access = FILE_READ_ATTRIBUTES;
2544 oparms.disposition = FILE_OPEN;
0f060936 2545 oparms.create_options = cifs_create_options(cifs_sb, 0);
2d304217
SF		 2546 oparms.fid = &fid;
2547 oparms.reconnect = false;
2548
69dda305
AA		 2549 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
2550 NULL, NULL);
2d304217
SF		 2551 if (rc)
2552 return rc;
2553
2554 rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
2555 fid.volatile_fid, buf);
2556 buf->f_type = SMB2_MAGIC_NUMBER;
2557 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2558 return rc;
2559}
2d304217 2560
027e8eec
PS		 2561static bool
2562smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
2563{
2564 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
2565 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
2566}
2567
f7ba7fe6
PS		 2568static int
2569smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
2570 __u64 length, __u32 type, int lock, int unlock, bool wait)
2571{
2572 if (unlock && !lock)
2573 type = SMB2_LOCKFLAG_UNLOCK;
2574 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
2575 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
2576 current->tgid, length, offset, type, wait);
2577}
2578
b8c32dbb
PS		 2579static void
2580smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
2581{
2582 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
2583}
2584
2585static void
2586smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
2587{
2588 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
2589}
2590
2591static void
2592smb2_new_lease_key(struct cifs_fid *fid)
2593{
fa70b87c 2594 generate_random_uuid(fid->lease_key);
b8c32dbb
PS		 2595}
2596
9d49640a
AA		 2597static int
2598smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
2599 const char *search_name,
2600 struct dfs_info3_param **target_nodes,
2601 unsigned int *num_of_nodes,
2602 const struct nls_table *nls_codepage, int remap)
2603{
2604 int rc;
2605 __le16 *utf16_path = NULL;
2606 int utf16_path_len = 0;
2607 struct cifs_tcon *tcon;
2608 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
2609 struct get_dfs_referral_rsp *dfs_rsp = NULL;
2610 u32 dfs_req_size = 0, dfs_rsp_size = 0;
2611
a205d500 2612 cifs_dbg(FYI, "%s: path: %s\n", __func__, search_name);
9d49640a
AA		 2613
2614 /*
63a83b86 2615 * Try to use the IPC tcon, otherwise just use any
9d49640a 2616 */
63a83b86
AA		 2617 tcon = ses->tcon_ipc;
2618 if (tcon == NULL) {
2619 spin_lock(&cifs_tcp_ses_lock);
2620 tcon = list_first_entry_or_null(&ses->tcon_list,
2621 struct cifs_tcon,
2622 tcon_list);
2623 if (tcon)
2624 tcon->tc_count++;
2625 spin_unlock(&cifs_tcp_ses_lock);
2626 }
2627
2628 if (tcon == NULL) {
9d49640a
AA		 2629 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
2630 ses);
2631 rc = -ENOTCONN;
2632 goto out;
2633 }
2634
2635 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
2636 &utf16_path_len,
2637 nls_codepage, remap);
2638 if (!utf16_path) {
2639 rc = -ENOMEM;
2640 goto out;
2641 }
2642
2643 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
2644 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
2645 if (!dfs_req) {
2646 rc = -ENOMEM;
2647 goto out;
2648 }
2649
2650 /* Highest DFS referral version understood */
2651 dfs_req->MaxReferralLevel = DFS_VERSION;
2652
2653 /* Path to resolve in an UTF-16 null-terminated string */
2654 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
2655
2656 do {
9d49640a
AA		 2657 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
2658 FSCTL_DFS_GET_REFERRALS,
63a83b86 2659 true /* is_fsctl */,
153322f7 2660 (char *)dfs_req, dfs_req_size, CIFSMaxBufSize,
9d49640a 2661 (char **)&dfs_rsp, &dfs_rsp_size);
9d49640a
AA		 2662 } while (rc == -EAGAIN);
2663
2664 if (rc) {
2564f2ff 2665 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
3175eb9b 2666 cifs_tcon_dbg(VFS, "ioctl error in %s rc=%d\n", __func__, rc);
9d49640a
AA		 2667 goto out;
2668 }
2669
2670 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
2671 num_of_nodes, target_nodes,
2672 nls_codepage, remap, search_name,
2673 true /* is_unicode */);
2674 if (rc) {
3175eb9b 2675 cifs_tcon_dbg(VFS, "parse error in %s rc=%d\n", __func__, rc);
9d49640a
AA		 2676 goto out;
2677 }
2678
2679 out:
63a83b86
AA		 2680 if (tcon && !tcon->ipc) {
2681 /* ipc tcons are not refcounted */
9d49640a
AA		 2682 spin_lock(&cifs_tcp_ses_lock);
2683 tcon->tc_count--;
2684 spin_unlock(&cifs_tcp_ses_lock);
2685 }
2686 kfree(utf16_path);
2687 kfree(dfs_req);
2688 kfree(dfs_rsp);
2689 return rc;
2690}
5de254dc 2691
d5ecebc4
SF		 2692static int
2693parse_reparse_posix(struct reparse_posix_data *symlink_buf,
2694 u32 plen, char **target_path,
2695 struct cifs_sb_info *cifs_sb)
2696{
2697 unsigned int len;
2698
2699 /* See MS-FSCC 2.1.2.6 for the 'NFS' style reparse tags */
2700 len = le16_to_cpu(symlink_buf->ReparseDataLength);
2701
d5ecebc4
SF		 2702 if (le64_to_cpu(symlink_buf->InodeType) != NFS_SPECFILE_LNK) {
2703 cifs_dbg(VFS, "%lld not a supported symlink type\n",
2704 le64_to_cpu(symlink_buf->InodeType));
2705 return -EOPNOTSUPP;
2706 }
2707
2708 *target_path = cifs_strndup_from_utf16(
2709 symlink_buf->PathBuffer,
2710 len, true, cifs_sb->local_nls);
2711 if (!(*target_path))
2712 return -ENOMEM;
2713
2714 convert_delimiter(*target_path, '/');
2715 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
2716
2717 return 0;
2718}
2719
5de254dc
RS		 2720static int
2721parse_reparse_symlink(struct reparse_symlink_data_buffer *symlink_buf,
2722 u32 plen, char **target_path,
2723 struct cifs_sb_info *cifs_sb)
2724{
2725 unsigned int sub_len;
2726 unsigned int sub_offset;
2727
d5ecebc4 2728 /* We handle Symbolic Link reparse tag here. See: MS-FSCC 2.1.2.4 */
5de254dc
RS		 2729
2730 sub_offset = le16_to_cpu(symlink_buf->SubstituteNameOffset);
2731 sub_len = le16_to_cpu(symlink_buf->SubstituteNameLength);
2732 if (sub_offset + 20 > plen ||
2733 sub_offset + sub_len + 20 > plen) {
2734 cifs_dbg(VFS, "srv returned malformed symlink buffer\n");
2735 return -EIO;
2736 }
2737
2738 *target_path = cifs_strndup_from_utf16(
2739 symlink_buf->PathBuffer + sub_offset,
2740 sub_len, true, cifs_sb->local_nls);
2741 if (!(*target_path))
2742 return -ENOMEM;
2743
2744 convert_delimiter(*target_path, '/');
2745 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
2746
2747 return 0;
2748}
2749
d5ecebc4 2750static int
f5f111c2
RS		 2751parse_reparse_point(struct reparse_data_buffer *buf,
2752 u32 plen, char **target_path,
2753 struct cifs_sb_info *cifs_sb)
d5ecebc4 2754{
f5f111c2
RS		 2755 if (plen < sizeof(struct reparse_data_buffer)) {
2756 cifs_dbg(VFS, "reparse buffer is too small. Must be "
2757 "at least 8 bytes but was %d\n", plen);
2758 return -EIO;
2759 }
d5ecebc4 2760
f5f111c2
RS		 2761 if (plen < le16_to_cpu(buf->ReparseDataLength) +
2762 sizeof(struct reparse_data_buffer)) {
2763 cifs_dbg(VFS, "srv returned invalid reparse buf "
2764 "length: %d\n", plen);
2765 return -EIO;
2766 }
d5ecebc4 2767
f5f111c2
RS		 2768 /* See MS-FSCC 2.1.2 */
2769 switch (le32_to_cpu(buf->ReparseTag)) {
2770 case IO_REPARSE_TAG_NFS:
2771 return parse_reparse_posix(
2772 (struct reparse_posix_data *)buf,
2773 plen, target_path, cifs_sb);
2774 case IO_REPARSE_TAG_SYMLINK:
2775 return parse_reparse_symlink(
2776 (struct reparse_symlink_data_buffer *)buf,
2777 plen, target_path, cifs_sb);
2778 default:
2779 cifs_dbg(VFS, "srv returned unknown symlink buffer "
2780 "tag:0x%08x\n", le32_to_cpu(buf->ReparseTag));
2781 return -EOPNOTSUPP;
2782 }
d5ecebc4
SF		 2783}
2784
7893242e
PS		 2785#define SMB2_SYMLINK_STRUCT_SIZE \
2786 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
2787
b42bf888
PS		 2788static int
2789smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
ebaf546a
RS		 2790 struct cifs_sb_info *cifs_sb, const char *full_path,
2791 char **target_path, bool is_reparse_point)
b42bf888
PS		 2792{
2793 int rc;
ebaf546a 2794 __le16 *utf16_path = NULL;
b42bf888
PS		 2795 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2796 struct cifs_open_parms oparms;
2797 struct cifs_fid fid;
91cb74f5 2798 struct kvec err_iov = {NULL, 0};
9d874c36 2799 struct smb2_err_rsp *err_buf = NULL;
b42bf888 2800 struct smb2_symlink_err_rsp *symlink;
7893242e
PS		 2801 unsigned int sub_len;
2802 unsigned int sub_offset;
2803 unsigned int print_len;
2804 unsigned int print_offset;
ebaf546a
RS		 2805 int flags = 0;
2806 struct smb_rqst rqst[3];
2807 int resp_buftype[3];
2808 struct kvec rsp_iov[3];
2809 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
2810 struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
2811 struct kvec close_iov[1];
2812 struct smb2_create_rsp *create_rsp;
2813 struct smb2_ioctl_rsp *ioctl_rsp;
5de254dc 2814 struct reparse_data_buffer *reparse_buf;
0f060936 2815 int create_options = is_reparse_point ? OPEN_REPARSE_POINT : 0;
ebaf546a 2816 u32 plen;
b42bf888
PS		 2817
2818 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
2819
5de254dc
RS		 2820 *target_path = NULL;
2821
ebaf546a
RS		 2822 if (smb3_encryption_required(tcon))
2823 flags |= CIFS_TRANSFORM_REQ;
2824
2825 memset(rqst, 0, sizeof(rqst));
2826 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
2827 memset(rsp_iov, 0, sizeof(rsp_iov));
2828
b42bf888
PS		 2829 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
2830 if (!utf16_path)
2831 return -ENOMEM;
2832
ebaf546a
RS		 2833 /* Open */
2834 memset(&open_iov, 0, sizeof(open_iov));
2835 rqst[0].rq_iov = open_iov;
2836 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
2837
2838 memset(&oparms, 0, sizeof(oparms));
b42bf888
PS		 2839 oparms.tcon = tcon;
2840 oparms.desired_access = FILE_READ_ATTRIBUTES;
2841 oparms.disposition = FILE_OPEN;
0f060936 2842 oparms.create_options = cifs_create_options(cifs_sb, create_options);
b42bf888
PS		 2843 oparms.fid = &fid;
2844 oparms.reconnect = false;
2845
ebaf546a
RS		 2846 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
2847 if (rc)
2848 goto querty_exit;
2849 smb2_set_next_command(tcon, &rqst[0]);
2850
2851
2852 /* IOCTL */
2853 memset(&io_iov, 0, sizeof(io_iov));
2854 rqst[1].rq_iov = io_iov;
2855 rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
2856
2857 rc = SMB2_ioctl_init(tcon, &rqst[1], fid.persistent_fid,
2858 fid.volatile_fid, FSCTL_GET_REPARSE_POINT,
731b82bb
RS		 2859 true /* is_fctl */, NULL, 0,
2860 CIFSMaxBufSize -
2861 MAX_SMB2_CREATE_RESPONSE_SIZE -
2862 MAX_SMB2_CLOSE_RESPONSE_SIZE);
ebaf546a
RS		 2863 if (rc)
2864 goto querty_exit;
2865
2866 smb2_set_next_command(tcon, &rqst[1]);
2867 smb2_set_related(&rqst[1]);
2868
2869
2870 /* Close */
2871 memset(&close_iov, 0, sizeof(close_iov));
2872 rqst[2].rq_iov = close_iov;
2873 rqst[2].rq_nvec = 1;
2874
43f8a6a7 2875 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
ebaf546a
RS		 2876 if (rc)
2877 goto querty_exit;
2878
2879 smb2_set_related(&rqst[2]);
2880
2881 rc = compound_send_recv(xid, tcon->ses, flags, 3, rqst,
2882 resp_buftype, rsp_iov);
2883
2884 create_rsp = rsp_iov[0].iov_base;
2885 if (create_rsp && create_rsp->sync_hdr.Status)
2886 err_iov = rsp_iov[0];
2887 ioctl_rsp = rsp_iov[1].iov_base;
2888
2889 /*
2890 * Open was successful and we got an ioctl response.
2891 */
2892 if ((rc == 0) && (is_reparse_point)) {
2893 /* See MS-FSCC 2.3.23 */
2894
5de254dc
RS		 2895 reparse_buf = (struct reparse_data_buffer *)
2896 ((char *)ioctl_rsp +
2897 le32_to_cpu(ioctl_rsp->OutputOffset));
ebaf546a
RS		 2898 plen = le32_to_cpu(ioctl_rsp->OutputCount);
2899
2900 if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) >
2901 rsp_iov[1].iov_len) {
3175eb9b 2902 cifs_tcon_dbg(VFS, "srv returned invalid ioctl len: %d\n",
5de254dc
RS		 2903 plen);
2904 rc = -EIO;
2905 goto querty_exit;
2906 }
2907
f5f111c2
RS		 2908 rc = parse_reparse_point(reparse_buf, plen, target_path,
2909 cifs_sb);
ebaf546a
RS		 2910 goto querty_exit;
2911 }
2912
0d568cd3 2913 if (!rc || !err_iov.iov_base) {
9d874c36 2914 rc = -ENOENT;
ebaf546a 2915 goto querty_exit;
b42bf888 2916 }
7893242e 2917
91cb74f5 2918 err_buf = err_iov.iov_base;
7893242e 2919 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1fc6ad2f 2920 err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) {
df070afd
RS		 2921 rc = -EINVAL;
2922 goto querty_exit;
2923 }
2924
2925 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
2926 if (le32_to_cpu(symlink->SymLinkErrorTag) != SYMLINK_ERROR_TAG ||
2927 le32_to_cpu(symlink->ReparseTag) != IO_REPARSE_TAG_SYMLINK) {
2928 rc = -EINVAL;
9d874c36 2929 goto querty_exit;
7893242e
PS		 2930 }
2931
b42bf888
PS		 2932 /* open must fail on symlink - reset rc */
2933 rc = 0;
b42bf888
PS		 2934 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
2935 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
7893242e
PS		 2936 print_len = le16_to_cpu(symlink->PrintNameLength);
2937 print_offset = le16_to_cpu(symlink->PrintNameOffset);
2938
1fc6ad2f 2939 if (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
df070afd 2940 rc = -EINVAL;
9d874c36 2941 goto querty_exit;
7893242e
PS		 2942 }
2943
1fc6ad2f
RS		 2944 if (err_iov.iov_len <
2945 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
df070afd 2946 rc = -EINVAL;
9d874c36 2947 goto querty_exit;
7893242e
PS		 2948 }
2949
b42bf888
PS		 2950 *target_path = cifs_strndup_from_utf16(
2951 (char *)symlink->PathBuffer + sub_offset,
2952 sub_len, true, cifs_sb->local_nls);
2953 if (!(*target_path)) {
9d874c36
RS		 2954 rc = -ENOMEM;
2955 goto querty_exit;
b42bf888
PS		 2956 }
2957 convert_delimiter(*target_path, '/');
2958 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
9d874c36
RS		 2959
2960 querty_exit:
ebaf546a 2961 cifs_dbg(FYI, "query symlink rc %d\n", rc);
b42bf888 2962 kfree(utf16_path);
ebaf546a
RS		 2963 SMB2_open_free(&rqst[0]);
2964 SMB2_ioctl_free(&rqst[1]);
2965 SMB2_close_free(&rqst[2]);
2966 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2967 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
2968 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
b42bf888
PS		 2969 return rc;
2970}
2971
2f1afe25
SP		 2972static struct cifs_ntsd *
2973get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
2974 const struct cifs_fid *cifsfid, u32 *pacllen)
2975{
2976 struct cifs_ntsd *pntsd = NULL;
2977 unsigned int xid;
2978 int rc = -EOPNOTSUPP;
2979 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2980
2981 if (IS_ERR(tlink))
2982 return ERR_CAST(tlink);
2983
2984 xid = get_xid();
2985 cifs_dbg(FYI, "trying to get acl\n");
2986
2987 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
2988 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
2989 free_xid(xid);
2990
2991 cifs_put_tlink(tlink);
2992
2993 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
2994 if (rc)
2995 return ERR_PTR(rc);
2996 return pntsd;
2997
2998}
2999
3000static struct cifs_ntsd *
3001get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
3002 const char *path, u32 *pacllen)
3003{
3004 struct cifs_ntsd *pntsd = NULL;
3005 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
3006 unsigned int xid;
3007 int rc;
3008 struct cifs_tcon *tcon;
3009 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3010 struct cifs_fid fid;
3011 struct cifs_open_parms oparms;
3012 __le16 *utf16_path;
3013
3014 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
3015 if (IS_ERR(tlink))
3016 return ERR_CAST(tlink);
3017
3018 tcon = tlink_tcon(tlink);
3019 xid = get_xid();
3020
2f1afe25 3021 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
cfe89091
SF		 3022 if (!utf16_path) {
3023 rc = -ENOMEM;
3024 free_xid(xid);
3025 return ERR_PTR(rc);
3026 }
2f1afe25
SP		 3027
3028 oparms.tcon = tcon;
3029 oparms.desired_access = READ_CONTROL;
3030 oparms.disposition = FILE_OPEN;
0f060936 3031 oparms.create_options = cifs_create_options(cifs_sb, 0);
2f1afe25
SP		 3032 oparms.fid = &fid;
3033 oparms.reconnect = false;
3034
69dda305
AA		 3035 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
3036 NULL);
2f1afe25
SP		 3037 kfree(utf16_path);
3038 if (!rc) {
3039 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
3040 fid.volatile_fid, (void **)&pntsd, pacllen);
3041 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
3042 }
3043
3044 cifs_put_tlink(tlink);
3045 free_xid(xid);
3046
3047 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
3048 if (rc)
3049 return ERR_PTR(rc);
3050 return pntsd;
3051}
3052
366ed846
SP		 3053static int
3054set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
3055 struct inode *inode, const char *path, int aclflag)
3056{
3057 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
3058 unsigned int xid;
3059 int rc, access_flags = 0;
3060 struct cifs_tcon *tcon;
3061 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
3062 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3063 struct cifs_fid fid;
3064 struct cifs_open_parms oparms;
3065 __le16 *utf16_path;
3066
3067 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
3068 if (IS_ERR(tlink))
3069 return PTR_ERR(tlink);
3070
3071 tcon = tlink_tcon(tlink);
3072 xid = get_xid();
3073
366ed846
SP		 3074 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
3075 access_flags = WRITE_OWNER;
3076 else
3077 access_flags = WRITE_DAC;
3078
3079 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
cfe89091
SF		 3080 if (!utf16_path) {
3081 rc = -ENOMEM;
3082 free_xid(xid);
3083 return rc;
3084 }
366ed846
SP		 3085
3086 oparms.tcon = tcon;
3087 oparms.desired_access = access_flags;
0f060936 3088 oparms.create_options = cifs_create_options(cifs_sb, 0);
366ed846
SP		 3089 oparms.disposition = FILE_OPEN;
3090 oparms.path = path;
3091 oparms.fid = &fid;
3092 oparms.reconnect = false;
3093
69dda305
AA		 3094 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
3095 NULL, NULL);
366ed846
SP		 3096 kfree(utf16_path);
3097 if (!rc) {
3098 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
3099 fid.volatile_fid, pnntsd, acllen, aclflag);
3100 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
3101 }
3102
3103 cifs_put_tlink(tlink);
3104 free_xid(xid);
3105 return rc;
3106}
366ed846 3107
2f1afe25
SP		 3108/* Retrieve an ACL from the server */
3109static struct cifs_ntsd *
3110get_smb2_acl(struct cifs_sb_info *cifs_sb,
3111 struct inode *inode, const char *path,
3112 u32 *pacllen)
3113{
3114 struct cifs_ntsd *pntsd = NULL;
3115 struct cifsFileInfo *open_file = NULL;
3116
3117 if (inode)
3118 open_file = find_readable_file(CIFS_I(inode), true);
3119 if (!open_file)
3120 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
3121
3122 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
3123 cifsFileInfo_put(open_file);
3124 return pntsd;
3125}
2f1afe25 3126
30175628
SF		 3127static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
3128 loff_t offset, loff_t len, bool keep_size)
3129{
72c419d9 3130 struct cifs_ses *ses = tcon->ses;
30175628
SF		 3131 struct inode *inode;
3132 struct cifsInodeInfo *cifsi;
3133 struct cifsFileInfo *cfile = file->private_data;
3134 struct file_zero_data_information fsctl_buf;
3135 long rc;
3136 unsigned int xid;
72c419d9 3137 __le64 eof;
30175628
SF		 3138
3139 xid = get_xid();
3140
2b0143b5 3141 inode = d_inode(cfile->dentry);
30175628
SF		 3142 cifsi = CIFS_I(inode);
3143
a205d500 3144 trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid,
779ede04
SF		 3145 ses->Suid, offset, len);
3146
3147
30175628
SF		 3148 /* if file not oplocked can't be sure whether asking to extend size */
3149 if (!CIFS_CACHE_READ(cifsi))
cfe89091
SF		 3150 if (keep_size == false) {
3151 rc = -EOPNOTSUPP;
779ede04
SF		 3152 trace_smb3_zero_err(xid, cfile->fid.persistent_fid,
3153 tcon->tid, ses->Suid, offset, len, rc);
cfe89091
SF		 3154 free_xid(xid);
3155 return rc;
3156 }
30175628 3157
d1c35afb 3158 cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
30175628
SF		 3159
3160 fsctl_buf.FileOffset = cpu_to_le64(offset);
3161 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
3162
c425014a
RS		 3163 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3164 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, true,
3165 (char *)&fsctl_buf,
3166 sizeof(struct file_zero_data_information),
3167 0, NULL, NULL);
72c419d9
RS		 3168 if (rc)
3169 goto zero_range_exit;
3170
3171 /*
3172 * do we also need to change the size of the file?
3173 */
3174 if (keep_size == false && i_size_read(inode) < offset + len) {
72c419d9 3175 eof = cpu_to_le64(offset + len);
c425014a
RS		 3176 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3177 cfile->fid.volatile_fid, cfile->pid, &eof);
72c419d9
RS		 3178 }
3179
72c419d9 3180 zero_range_exit:
30175628 3181 free_xid(xid);
779ede04
SF		 3182 if (rc)
3183 trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid,
3184 ses->Suid, offset, len, rc);
3185 else
3186 trace_smb3_zero_done(xid, cfile->fid.persistent_fid, tcon->tid,
3187 ses->Suid, offset, len);
30175628
SF		 3188 return rc;
3189}
3190
31742c5a
SF		 3191static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
3192 loff_t offset, loff_t len)
3193{
3194 struct inode *inode;
31742c5a
SF		 3195 struct cifsFileInfo *cfile = file->private_data;
3196 struct file_zero_data_information fsctl_buf;
3197 long rc;
3198 unsigned int xid;
3199 __u8 set_sparse = 1;
3200
3201 xid = get_xid();
3202
2b0143b5 3203 inode = d_inode(cfile->dentry);
31742c5a
SF		 3204
3205 /* Need to make file sparse, if not already, before freeing range. */
3206 /* Consider adding equivalent for compressed since it could also work */
cfe89091
SF		 3207 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
3208 rc = -EOPNOTSUPP;
3209 free_xid(xid);
3210 return rc;
3211 }
31742c5a 3212
a205d500 3213 cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
31742c5a
SF		 3214
3215 fsctl_buf.FileOffset = cpu_to_le64(offset);
3216 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
3217
3218 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3219 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
63a83b86 3220 true /* is_fctl */, (char *)&fsctl_buf,
153322f7
SF		 3221 sizeof(struct file_zero_data_information),
3222 CIFSMaxBufSize, NULL, NULL);
31742c5a
SF		 3223 free_xid(xid);
3224 return rc;
3225}
3226
9ccf3216
SF		 3227static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
3228 loff_t off, loff_t len, bool keep_size)
3229{
3230 struct inode *inode;
3231 struct cifsInodeInfo *cifsi;
3232 struct cifsFileInfo *cfile = file->private_data;
3233 long rc = -EOPNOTSUPP;
3234 unsigned int xid;
f1699479 3235 __le64 eof;
9ccf3216
SF		 3236
3237 xid = get_xid();
3238
2b0143b5 3239 inode = d_inode(cfile->dentry);
9ccf3216
SF		 3240 cifsi = CIFS_I(inode);
3241
779ede04
SF		 3242 trace_smb3_falloc_enter(xid, cfile->fid.persistent_fid, tcon->tid,
3243 tcon->ses->Suid, off, len);
9ccf3216
SF		 3244 /* if file not oplocked can't be sure whether asking to extend size */
3245 if (!CIFS_CACHE_READ(cifsi))
cfe89091 3246 if (keep_size == false) {
779ede04
SF		 3247 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
3248 tcon->tid, tcon->ses->Suid, off, len, rc);
cfe89091
SF		 3249 free_xid(xid);
3250 return rc;
3251 }
9ccf3216 3252
8bd0d701
RS		 3253 /*
3254 * Extending the file
3255 */
3256 if ((keep_size == false) && i_size_read(inode) < off + len) {
ef4a632c
MZ		 3257 rc = inode_newsize_ok(inode, off + len);
3258 if (rc)
3259 goto out;
3260
8bd0d701
RS		 3261 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0)
3262 smb2_set_sparse(xid, tcon, cfile, inode, false);
3263
3264 eof = cpu_to_le64(off + len);
3265 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3266 cfile->fid.volatile_fid, cfile->pid, &eof);
3267 if (rc == 0) {
3268 cifsi->server_eof = off + len;
3269 cifs_setsize(inode, off + len);
3270 cifs_truncate_page(inode->i_mapping, inode->i_size);
3271 truncate_setsize(inode, off + len);
3272 }
3273 goto out;
3274 }
3275
9ccf3216
SF		 3276 /*
3277 * Files are non-sparse by default so falloc may be a no-op
8bd0d701
RS		 3278 * Must check if file sparse. If not sparse, and since we are not
3279 * extending then no need to do anything since file already allocated
9ccf3216
SF		 3280 */
3281 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
8bd0d701
RS		 3282 rc = 0;
3283 goto out;
9ccf3216
SF		 3284 }
3285
3286 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
3287 /*
3288 * Check if falloc starts within first few pages of file
3289 * and ends within a few pages of the end of file to
3290 * ensure that most of file is being forced to be
3291 * fallocated now. If so then setting whole file sparse
3292 * ie potentially making a few extra pages at the beginning
3293 * or end of the file non-sparse via set_sparse is harmless.
3294 */
cfe89091
SF		 3295 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
3296 rc = -EOPNOTSUPP;
8bd0d701 3297 goto out;
f1699479 3298 }
9ccf3216 3299 }
9ccf3216 3300
8bd0d701
RS		 3301 smb2_set_sparse(xid, tcon, cfile, inode, false);
3302 rc = 0;
3303
3304out:
779ede04
SF		 3305 if (rc)
3306 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid,
3307 tcon->ses->Suid, off, len, rc);
3308 else
3309 trace_smb3_falloc_done(xid, cfile->fid.persistent_fid, tcon->tid,
3310 tcon->ses->Suid, off, len);
9ccf3216
SF		 3311
3312 free_xid(xid);
3313 return rc;
3314}
3315
dece44e3
RS		 3316static loff_t smb3_llseek(struct file *file, struct cifs_tcon *tcon, loff_t offset, int whence)
3317{
3318 struct cifsFileInfo *wrcfile, *cfile = file->private_data;
3319 struct cifsInodeInfo *cifsi;
3320 struct inode *inode;
3321 int rc = 0;
3322 struct file_allocated_range_buffer in_data, *out_data = NULL;
3323 u32 out_data_len;
3324 unsigned int xid;
3325
3326 if (whence != SEEK_HOLE && whence != SEEK_DATA)
3327 return generic_file_llseek(file, offset, whence);
3328
3329 inode = d_inode(cfile->dentry);
3330 cifsi = CIFS_I(inode);
3331
3332 if (offset < 0 || offset >= i_size_read(inode))
3333 return -ENXIO;
3334
3335 xid = get_xid();
3336 /*
3337 * We need to be sure that all dirty pages are written as they
3338 * might fill holes on the server.
3339 * Note that we also MUST flush any written pages since at least
3340 * some servers (Windows2016) will not reflect recent writes in
3341 * QUERY_ALLOCATED_RANGES until SMB2_flush is called.
3342 */
86f740f2 3343 wrcfile = find_writable_file(cifsi, FIND_WR_ANY);
dece44e3
RS		 3344 if (wrcfile) {
3345 filemap_write_and_wait(inode->i_mapping);
3346 smb2_flush_file(xid, tcon, &wrcfile->fid);
3347 cifsFileInfo_put(wrcfile);
3348 }
3349
3350 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
3351 if (whence == SEEK_HOLE)
3352 offset = i_size_read(inode);
3353 goto lseek_exit;
3354 }
3355
3356 in_data.file_offset = cpu_to_le64(offset);
3357 in_data.length = cpu_to_le64(i_size_read(inode));
3358
3359 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3360 cfile->fid.volatile_fid,
3361 FSCTL_QUERY_ALLOCATED_RANGES, true,
3362 (char *)&in_data, sizeof(in_data),
3363 sizeof(struct file_allocated_range_buffer),
3364 (char **)&out_data, &out_data_len);
3365 if (rc == -E2BIG)
3366 rc = 0;
3367 if (rc)
3368 goto lseek_exit;
3369
3370 if (whence == SEEK_HOLE && out_data_len == 0)
3371 goto lseek_exit;
3372
3373 if (whence == SEEK_DATA && out_data_len == 0) {
3374 rc = -ENXIO;
3375 goto lseek_exit;
3376 }
3377
3378 if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
3379 rc = -EINVAL;
3380 goto lseek_exit;
3381 }
3382 if (whence == SEEK_DATA) {
3383 offset = le64_to_cpu(out_data->file_offset);
3384 goto lseek_exit;
3385 }
3386 if (offset < le64_to_cpu(out_data->file_offset))
3387 goto lseek_exit;
3388
3389 offset = le64_to_cpu(out_data->file_offset) + le64_to_cpu(out_data->length);
3390
3391 lseek_exit:
3392 free_xid(xid);
3393 kfree(out_data);
3394 if (!rc)
3395 return vfs_setpos(file, offset, inode->i_sb->s_maxbytes);
3396 else
3397 return rc;
3398}
3399
2f3ebaba
RS		 3400static int smb3_fiemap(struct cifs_tcon *tcon,
3401 struct cifsFileInfo *cfile,
3402 struct fiemap_extent_info *fei, u64 start, u64 len)
3403{
3404 unsigned int xid;
3405 struct file_allocated_range_buffer in_data, *out_data;
3406 u32 out_data_len;
3407 int i, num, rc, flags, last_blob;
3408 u64 next;
3409
3410 if (fiemap_check_flags(fei, FIEMAP_FLAG_SYNC))
3411 return -EBADR;
3412
3413 xid = get_xid();
3414 again:
3415 in_data.file_offset = cpu_to_le64(start);
3416 in_data.length = cpu_to_le64(len);
3417
3418 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3419 cfile->fid.volatile_fid,
3420 FSCTL_QUERY_ALLOCATED_RANGES, true,
3421 (char *)&in_data, sizeof(in_data),
3422 1024 * sizeof(struct file_allocated_range_buffer),
3423 (char **)&out_data, &out_data_len);
3424 if (rc == -E2BIG) {
3425 last_blob = 0;
3426 rc = 0;
3427 } else
3428 last_blob = 1;
3429 if (rc)
3430 goto out;
3431
979a2665 3432 if (out_data_len && out_data_len < sizeof(struct file_allocated_range_buffer)) {
2f3ebaba
RS		 3433 rc = -EINVAL;
3434 goto out;
3435 }
3436 if (out_data_len % sizeof(struct file_allocated_range_buffer)) {
3437 rc = -EINVAL;
3438 goto out;
3439 }
3440
3441 num = out_data_len / sizeof(struct file_allocated_range_buffer);
3442 for (i = 0; i < num; i++) {
3443 flags = 0;
3444 if (i == num - 1 && last_blob)
3445 flags |= FIEMAP_EXTENT_LAST;
3446
3447 rc = fiemap_fill_next_extent(fei,
3448 le64_to_cpu(out_data[i].file_offset),
3449 le64_to_cpu(out_data[i].file_offset),
3450 le64_to_cpu(out_data[i].length),
3451 flags);
3452 if (rc < 0)
3453 goto out;
3454 if (rc == 1) {
3455 rc = 0;
3456 goto out;
3457 }
3458 }
3459
3460 if (!last_blob) {
3461 next = le64_to_cpu(out_data[num - 1].file_offset) +
3462 le64_to_cpu(out_data[num - 1].length);
3463 len = len - (next - start);
3464 start = next;
3465 goto again;
3466 }
3467
3468 out:
3469 free_xid(xid);
3470 kfree(out_data);
3471 return rc;
3472}
9ccf3216 3473
31742c5a
SF		 3474static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
3475 loff_t off, loff_t len)
3476{
3477 /* KEEP_SIZE already checked for by do_fallocate */
3478 if (mode & FALLOC_FL_PUNCH_HOLE)
3479 return smb3_punch_hole(file, tcon, off, len);
30175628
SF		 3480 else if (mode & FALLOC_FL_ZERO_RANGE) {
3481 if (mode & FALLOC_FL_KEEP_SIZE)
3482 return smb3_zero_range(file, tcon, off, len, true);
3483 return smb3_zero_range(file, tcon, off, len, false);
9ccf3216
SF		 3484 } else if (mode == FALLOC_FL_KEEP_SIZE)
3485 return smb3_simple_falloc(file, tcon, off, len, true);
3486 else if (mode == 0)
3487 return smb3_simple_falloc(file, tcon, off, len, false);
31742c5a
SF		 3488
3489 return -EOPNOTSUPP;
3490}
3491
c11f1df5
SP		 3492static void
3493smb2_downgrade_oplock(struct TCP_Server_Info *server,
9bd45408
PS		 3494 struct cifsInodeInfo *cinode, __u32 oplock,
3495 unsigned int epoch, bool *purge_cache)
c11f1df5 3496{
9bd45408 3497 server->ops->set_oplock_level(cinode, oplock, 0, NULL);
c11f1df5
SP		 3498}
3499
7b9b9edb 3500static void
9bd45408
PS		 3501smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3502 unsigned int epoch, bool *purge_cache);
3503
3504static void
3505smb3_downgrade_oplock(struct TCP_Server_Info *server,
3506 struct cifsInodeInfo *cinode, __u32 oplock,
3507 unsigned int epoch, bool *purge_cache)
7b9b9edb 3508{
9bd45408
PS		 3509 unsigned int old_state = cinode->oplock;
3510 unsigned int old_epoch = cinode->epoch;
3511 unsigned int new_state;
3512
3513 if (epoch > old_epoch) {
3514 smb21_set_oplock_level(cinode, oplock, 0, NULL);
3515 cinode->epoch = epoch;
3516 }
3517
3518 new_state = cinode->oplock;
3519 *purge_cache = false;
3520
3521 if ((old_state & CIFS_CACHE_READ_FLG) != 0 &&
3522 (new_state & CIFS_CACHE_READ_FLG) == 0)
3523 *purge_cache = true;
3524 else if (old_state == new_state && (epoch - old_epoch > 1))
3525 *purge_cache = true;
7b9b9edb
PS		 3526}
3527
53ef1016 3528static void
42873b0a
PS		 3529smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3530 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 3531{
3532 oplock &= 0xFF;
3533 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
3534 return;
3535 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
42873b0a 3536 cinode->oplock = CIFS_CACHE_RHW_FLG;
53ef1016
PS		 3537 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
3538 &cinode->vfs_inode);
3539 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
42873b0a 3540 cinode->oplock = CIFS_CACHE_RW_FLG;
53ef1016
PS		 3541 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
3542 &cinode->vfs_inode);
3543 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
3544 cinode->oplock = CIFS_CACHE_READ_FLG;
3545 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
3546 &cinode->vfs_inode);
3547 } else
3548 cinode->oplock = 0;
3549}
3550
3551static void
42873b0a
PS		 3552smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3553 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 3554{
3555 char message[5] = {0};
6a54b2e0 3556 unsigned int new_oplock = 0;
53ef1016
PS		 3557
3558 oplock &= 0xFF;
3559 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
3560 return;
3561
a016e279
PS		 3562 /* Check if the server granted an oplock rather than a lease */
3563 if (oplock & SMB2_OPLOCK_LEVEL_EXCLUSIVE)
3564 return smb2_set_oplock_level(cinode, oplock, epoch,
3565 purge_cache);
3566
53ef1016 3567 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
6a54b2e0 3568 new_oplock |= CIFS_CACHE_READ_FLG;
53ef1016
PS		 3569 strcat(message, "R");
3570 }
3571 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
6a54b2e0 3572 new_oplock |= CIFS_CACHE_HANDLE_FLG;
53ef1016
PS		 3573 strcat(message, "H");
3574 }
3575 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
6a54b2e0 3576 new_oplock |= CIFS_CACHE_WRITE_FLG;
53ef1016
PS		 3577 strcat(message, "W");
3578 }
6a54b2e0
CP		 3579 if (!new_oplock)
3580 strncpy(message, "None", sizeof(message));
3581
3582 cinode->oplock = new_oplock;
53ef1016
PS		 3583 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
3584 &cinode->vfs_inode);
3585}
3586
42873b0a
PS		 3587static void
3588smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3589 unsigned int epoch, bool *purge_cache)
3590{
3591 unsigned int old_oplock = cinode->oplock;
3592
3593 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
3594
3595 if (purge_cache) {
3596 *purge_cache = false;
3597 if (old_oplock == CIFS_CACHE_READ_FLG) {
3598 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
3599 (epoch - cinode->epoch > 0))
3600 *purge_cache = true;
3601 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
3602 (epoch - cinode->epoch > 1))
3603 *purge_cache = true;
3604 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
3605 (epoch - cinode->epoch > 1))
3606 *purge_cache = true;
3607 else if (cinode->oplock == 0 &&
3608 (epoch - cinode->epoch > 0))
3609 *purge_cache = true;
3610 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
3611 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
3612 (epoch - cinode->epoch > 0))
3613 *purge_cache = true;
3614 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
3615 (epoch - cinode->epoch > 1))
3616 *purge_cache = true;
3617 }
3618 cinode->epoch = epoch;
3619 }
3620}
3621
53ef1016
PS		 3622static bool
3623smb2_is_read_op(__u32 oplock)
3624{
3625 return oplock == SMB2_OPLOCK_LEVEL_II;
3626}
3627
3628static bool
3629smb21_is_read_op(__u32 oplock)
3630{
3631 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
3632 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
3633}
3634
f047390a
PS		 3635static __le32
3636map_oplock_to_lease(u8 oplock)
3637{
3638 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
3639 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
3640 else if (oplock == SMB2_OPLOCK_LEVEL_II)
3641 return SMB2_LEASE_READ_CACHING;
3642 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
3643 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
3644 SMB2_LEASE_WRITE_CACHING;
3645 return 0;
3646}
3647
a41a28bd
PS		 3648static char *
3649smb2_create_lease_buf(u8 *lease_key, u8 oplock)
3650{
3651 struct create_lease *buf;
3652
3653 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
3654 if (!buf)
3655 return NULL;
3656
729c0c9d 3657 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
f047390a 3658 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
a41a28bd
PS		 3659
3660 buf->ccontext.DataOffset = cpu_to_le16(offsetof
3661 (struct create_lease, lcontext));
3662 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
3663 buf->ccontext.NameOffset = cpu_to_le16(offsetof
3664 (struct create_lease, Name));
3665 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 3666 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
a41a28bd
PS		 3667 buf->Name[0] = 'R';
3668 buf->Name[1] = 'q';
3669 buf->Name[2] = 'L';
3670 buf->Name[3] = 's';
3671 return (char *)buf;
3672}
3673
f047390a
PS		 3674static char *
3675smb3_create_lease_buf(u8 *lease_key, u8 oplock)
3676{
3677 struct create_lease_v2 *buf;
3678
3679 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
3680 if (!buf)
3681 return NULL;
3682
729c0c9d 3683 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
f047390a
PS		 3684 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
3685
3686 buf->ccontext.DataOffset = cpu_to_le16(offsetof
3687 (struct create_lease_v2, lcontext));
3688 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
3689 buf->ccontext.NameOffset = cpu_to_le16(offsetof
3690 (struct create_lease_v2, Name));
3691 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 3692 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
f047390a
PS		 3693 buf->Name[0] = 'R';
3694 buf->Name[1] = 'q';
3695 buf->Name[2] = 'L';
3696 buf->Name[3] = 's';
3697 return (char *)buf;
3698}
3699
b5c7cde3 3700static __u8
96164ab2 3701smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
b5c7cde3
PS		 3702{
3703 struct create_lease *lc = (struct create_lease *)buf;
3704
42873b0a 3705 *epoch = 0; /* not used */
b5c7cde3
PS		 3706 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
3707 return SMB2_OPLOCK_LEVEL_NOCHANGE;
3708 return le32_to_cpu(lc->lcontext.LeaseState);
3709}
3710
f047390a 3711static __u8
96164ab2 3712smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
f047390a
PS		 3713{
3714 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
3715
42873b0a 3716 *epoch = le16_to_cpu(lc->lcontext.Epoch);
f047390a
PS		 3717 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
3718 return SMB2_OPLOCK_LEVEL_NOCHANGE;
96164ab2 3719 if (lease_key)
729c0c9d 3720 memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
f047390a
PS		 3721 return le32_to_cpu(lc->lcontext.LeaseState);
3722}
3723
7f6c5008
PS		 3724static unsigned int
3725smb2_wp_retry_size(struct inode *inode)
3726{
3727 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
3728 SMB2_MAX_BUFFER_SIZE);
3729}
3730
52755808
PS		 3731static bool
3732smb2_dir_needs_close(struct cifsFileInfo *cfile)
3733{
3734 return !cfile->invalidHandle;
3735}
3736
026e93dc 3737static void
977b6170 3738fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
2b2f7548 3739 struct smb_rqst *old_rq, __le16 cipher_type)
026e93dc
PS		 3740{
3741 struct smb2_sync_hdr *shdr =
c713c877 3742 (struct smb2_sync_hdr *)old_rq->rq_iov[0].iov_base;
026e93dc
PS		 3743
3744 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
3745 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
3746 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
3747 tr_hdr->Flags = cpu_to_le16(0x01);
2b2f7548
SF		 3748 if (cipher_type == SMB2_ENCRYPTION_AES128_GCM)
3749 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128GCM_NONCE);
3750 else
3751 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CCM_NONCE);
026e93dc 3752 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
026e93dc
PS		 3753}
3754
262916bc
RS		 3755/* We can not use the normal sg_set_buf() as we will sometimes pass a
3756 * stack object as buf.
3757 */
3758static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
3759 unsigned int buflen)
3760{
ee9d6618
ST		 3761 void *addr;
3762 /*
3763 * VMAP_STACK (at least) puts stack into the vmalloc address space
3764 */
3765 if (is_vmalloc_addr(buf))
3766 addr = vmalloc_to_page(buf);
3767 else
3768 addr = virt_to_page(buf);
3769 sg_set_page(sg, addr, buflen, offset_in_page(buf));
262916bc
RS		 3770}
3771
b2c96de7
RS		 3772/* Assumes the first rqst has a transform header as the first iov.
3773 * I.e.
3774 * rqst[0].rq_iov[0] is transform header
3775 * rqst[0].rq_iov[1+] data to be encrypted/decrypted
3776 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
977b6170 3777 */
026e93dc 3778static struct scatterlist *
b2c96de7 3779init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign)
026e93dc 3780{
b2c96de7 3781 unsigned int sg_len;
026e93dc
PS		 3782 struct scatterlist *sg;
3783 unsigned int i;
3784 unsigned int j;
b2c96de7
RS		 3785 unsigned int idx = 0;
3786 int skip;
3787
3788 sg_len = 1;
3789 for (i = 0; i < num_rqst; i++)
3790 sg_len += rqst[i].rq_nvec + rqst[i].rq_npages;
026e93dc
PS		 3791
3792 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
3793 if (!sg)
3794 return NULL;
3795
3796 sg_init_table(sg, sg_len);
b2c96de7
RS		 3797 for (i = 0; i < num_rqst; i++) {
3798 for (j = 0; j < rqst[i].rq_nvec; j++) {
3799 /*
3800 * The first rqst has a transform header where the
3801 * first 20 bytes are not part of the encrypted blob
3802 */
3803 skip = (i == 0) && (j == 0) ? 20 : 0;
3804 smb2_sg_set_buf(&sg[idx++],
3805 rqst[i].rq_iov[j].iov_base + skip,
3806 rqst[i].rq_iov[j].iov_len - skip);
e77fe73c 3807 }
b2c96de7
RS		 3808
3809 for (j = 0; j < rqst[i].rq_npages; j++) {
3810 unsigned int len, offset;
d5f07fb3 3811
b2c96de7
RS		 3812 rqst_page_get_length(&rqst[i], j, &len, &offset);
3813 sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset);
3814 }
026e93dc 3815 }
b2c96de7 3816 smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE);
026e93dc
PS		 3817 return sg;
3818}
3819
61cfac6f
PS		 3820static int
3821smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
3822{
3823 struct cifs_ses *ses;
3824 u8 *ses_enc_key;
3825
3826 spin_lock(&cifs_tcp_ses_lock);
d70e9fa5
AA		 3827 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
3828 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
3829 if (ses->Suid == ses_id) {
3830 ses_enc_key = enc ? ses->smb3encryptionkey :
3831 ses->smb3decryptionkey;
3832 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
3833 spin_unlock(&cifs_tcp_ses_lock);
3834 return 0;
3835 }
3836 }
61cfac6f
PS		 3837 }
3838 spin_unlock(&cifs_tcp_ses_lock);
3839
3840 return 1;
3841}
026e93dc 3842/*
c713c877
RS		 3843 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
3844 * iov[0] - transform header (associate data),
3845 * iov[1-N] - SMB2 header and pages - data to encrypt.
3846 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
026e93dc
PS		 3847 * untouched.
3848 */
3849static int
b2c96de7
RS		 3850crypt_message(struct TCP_Server_Info *server, int num_rqst,
3851 struct smb_rqst *rqst, int enc)
026e93dc
PS		 3852{
3853 struct smb2_transform_hdr *tr_hdr =
b2c96de7 3854 (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
1fc6ad2f 3855 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
026e93dc
PS		 3856 int rc = 0;
3857 struct scatterlist *sg;
3858 u8 sign[SMB2_SIGNATURE_SIZE] = {};
61cfac6f 3859 u8 key[SMB3_SIGN_KEY_SIZE];
026e93dc
PS		 3860 struct aead_request *req;
3861 char *iv;
3862 unsigned int iv_len;
a5186b85 3863 DECLARE_CRYPTO_WAIT(wait);
026e93dc
PS		 3864 struct crypto_aead *tfm;
3865 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
3866
61cfac6f
PS		 3867 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
3868 if (rc) {
3175eb9b 3869 cifs_server_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
61cfac6f 3870 enc ? "en" : "de");
026e93dc
PS		 3871 return 0;
3872 }
3873
3874 rc = smb3_crypto_aead_allocate(server);
3875 if (rc) {
3175eb9b 3876 cifs_server_dbg(VFS, "%s: crypto alloc failed\n", __func__);
026e93dc
PS		 3877 return rc;
3878 }
3879
3880 tfm = enc ? server->secmech.ccmaesencrypt :
3881 server->secmech.ccmaesdecrypt;
61cfac6f 3882 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
026e93dc 3883 if (rc) {
3175eb9b 3884 cifs_server_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
026e93dc
PS		 3885 return rc;
3886 }
3887
3888 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
3889 if (rc) {
3175eb9b 3890 cifs_server_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
026e93dc
PS		 3891 return rc;
3892 }
3893
3894 req = aead_request_alloc(tfm, GFP_KERNEL);
3895 if (!req) {
3175eb9b 3896 cifs_server_dbg(VFS, "%s: Failed to alloc aead request\n", __func__);
026e93dc
PS		 3897 return -ENOMEM;
3898 }
3899
3900 if (!enc) {
3901 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
3902 crypt_len += SMB2_SIGNATURE_SIZE;
3903 }
3904
b2c96de7 3905 sg = init_sg(num_rqst, rqst, sign);
026e93dc 3906 if (!sg) {
3175eb9b 3907 cifs_server_dbg(VFS, "%s: Failed to init sg\n", __func__);
517a6e43 3908 rc = -ENOMEM;
026e93dc
PS		 3909 goto free_req;
3910 }
3911
3912 iv_len = crypto_aead_ivsize(tfm);
3913 iv = kzalloc(iv_len, GFP_KERNEL);
3914 if (!iv) {
3175eb9b 3915 cifs_server_dbg(VFS, "%s: Failed to alloc iv\n", __func__);
517a6e43 3916 rc = -ENOMEM;
026e93dc
PS		 3917 goto free_sg;
3918 }
2b2f7548
SF		 3919
3920 if (server->cipher_type == SMB2_ENCRYPTION_AES128_GCM)
3921 memcpy(iv, (char *)tr_hdr->Nonce, SMB3_AES128GCM_NONCE);
3922 else {
3923 iv[0] = 3;
3924 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CCM_NONCE);
3925 }
026e93dc
PS		 3926
3927 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
3928 aead_request_set_ad(req, assoc_data_len);
3929
3930 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
a5186b85 3931 crypto_req_done, &wait);
026e93dc 3932
a5186b85
GBY		 3933 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
3934 : crypto_aead_decrypt(req), &wait);
026e93dc
PS		 3935
3936 if (!rc && enc)
3937 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
3938
3939 kfree(iv);
3940free_sg:
3941 kfree(sg);
3942free_req:
3943 kfree(req);
3944 return rc;
3945}
3946
b2c96de7
RS		 3947void
3948smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
3949{
3950 int i, j;
3951
3952 for (i = 0; i < num_rqst; i++) {
3953 if (rqst[i].rq_pages) {
3954 for (j = rqst[i].rq_npages - 1; j >= 0; j--)
3955 put_page(rqst[i].rq_pages[j]);
3956 kfree(rqst[i].rq_pages);
3957 }
3958 }
3959}
3960
3961/*
3962 * This function will initialize new_rq and encrypt the content.
3963 * The first entry, new_rq[0], only contains a single iov which contains
3964 * a smb2_transform_hdr and is pre-allocated by the caller.
3965 * This function then populates new_rq[1+] with the content from olq_rq[0+].
3966 *
3967 * The end result is an array of smb_rqst structures where the first structure
3968 * only contains a single iov for the transform header which we then can pass
3969 * to crypt_message().
3970 *
3971 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
3972 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
3973 */
026e93dc 3974static int
b2c96de7
RS		 3975smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
3976 struct smb_rqst *new_rq, struct smb_rqst *old_rq)
026e93dc 3977{
026e93dc 3978 struct page **pages;
b2c96de7
RS		 3979 struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
3980 unsigned int npages;
3981 unsigned int orig_len = 0;
3982 int i, j;
026e93dc
PS		 3983 int rc = -ENOMEM;
3984
b2c96de7
RS		 3985 for (i = 1; i < num_rqst; i++) {
3986 npages = old_rq[i - 1].rq_npages;
3987 pages = kmalloc_array(npages, sizeof(struct page *),
3988 GFP_KERNEL);
3989 if (!pages)
3990 goto err_free;
3991
3992 new_rq[i].rq_pages = pages;
3993 new_rq[i].rq_npages = npages;
3994 new_rq[i].rq_offset = old_rq[i - 1].rq_offset;
3995 new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz;
3996 new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz;
3997 new_rq[i].rq_iov = old_rq[i - 1].rq_iov;
3998 new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec;
3999
4000 orig_len += smb_rqst_len(server, &old_rq[i - 1]);
4001
4002 for (j = 0; j < npages; j++) {
4003 pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
4004 if (!pages[j])
4005 goto err_free;
4006 }
026e93dc 4007
b2c96de7
RS		 4008 /* copy pages form the old */
4009 for (j = 0; j < npages; j++) {
4010 char *dst, *src;
4011 unsigned int offset, len;
977b6170 4012
b2c96de7 4013 rqst_page_get_length(&new_rq[i], j, &len, &offset);
026e93dc 4014
b2c96de7
RS		 4015 dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset;
4016 src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset;
026e93dc 4017
b2c96de7
RS		 4018 memcpy(dst, src, len);
4019 kunmap(new_rq[i].rq_pages[j]);
4020 kunmap(old_rq[i - 1].rq_pages[j]);
4021 }
4022 }
35e2cc1b 4023
b2c96de7 4024 /* fill the 1st iov with a transform header */
2b2f7548 4025 fill_transform_hdr(tr_hdr, orig_len, old_rq, server->cipher_type);
d5f07fb3 4026
b2c96de7 4027 rc = crypt_message(server, num_rqst, new_rq, 1);
a205d500 4028 cifs_dbg(FYI, "Encrypt message returned %d\n", rc);
026e93dc 4029 if (rc)
b2c96de7 4030 goto err_free;
026e93dc
PS		 4031
4032 return rc;
4033
b2c96de7
RS		 4034err_free:
4035 smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
026e93dc
PS		 4036 return rc;
4037}
4038
4326ed2f
PS		 4039static int
4040smb3_is_transform_hdr(void *buf)
4041{
4042 struct smb2_transform_hdr *trhdr = buf;
4043
4044 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
4045}
4046
4047static int
4048decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
4049 unsigned int buf_data_size, struct page **pages,
4050 unsigned int npages, unsigned int page_data_size)
4051{
c713c877 4052 struct kvec iov[2];
4326ed2f 4053 struct smb_rqst rqst = {NULL};
4326ed2f
PS		 4054 int rc;
4055
c713c877
RS		 4056 iov[0].iov_base = buf;
4057 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
4058 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
4059 iov[1].iov_len = buf_data_size;
4326ed2f
PS		 4060
4061 rqst.rq_iov = iov;
c713c877 4062 rqst.rq_nvec = 2;
4326ed2f
PS		 4063 rqst.rq_pages = pages;
4064 rqst.rq_npages = npages;
4065 rqst.rq_pagesz = PAGE_SIZE;
4066 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
4067
b2c96de7 4068 rc = crypt_message(server, 1, &rqst, 0);
a205d500 4069 cifs_dbg(FYI, "Decrypt message returned %d\n", rc);
4326ed2f
PS		 4070
4071 if (rc)
4072 return rc;
4073
c713c877 4074 memmove(buf, iov[1].iov_base, buf_data_size);
977b6170
RS		 4075
4076 server->total_read = buf_data_size + page_data_size;
4326ed2f
PS		 4077
4078 return rc;
4079}
4080
c42a6abe
PS		 4081static int
4082read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
4083 unsigned int npages, unsigned int len)
4084{
4085 int i;
4086 int length;
4087
4088 for (i = 0; i < npages; i++) {
4089 struct page *page = pages[i];
4090 size_t n;
4091
4092 n = len;
4093 if (len >= PAGE_SIZE) {
4094 /* enough data to fill the page */
4095 n = PAGE_SIZE;
4096 len -= n;
4097 } else {
4098 zero_user(page, len, PAGE_SIZE - len);
4099 len = 0;
4100 }
1dbe3466 4101 length = cifs_read_page_from_socket(server, page, 0, n);
c42a6abe
PS		 4102 if (length < 0)
4103 return length;
4104 server->total_read += length;
4105 }
4106
4107 return 0;
4108}
4109
4110static int
4111init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
4112 unsigned int cur_off, struct bio_vec **page_vec)
4113{
4114 struct bio_vec *bvec;
4115 int i;
4116
4117 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
4118 if (!bvec)
4119 return -ENOMEM;
4120
4121 for (i = 0; i < npages; i++) {
4122 bvec[i].bv_page = pages[i];
4123 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
4124 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
4125 data_size -= bvec[i].bv_len;
4126 }
4127
4128 if (data_size != 0) {
4129 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
4130 kfree(bvec);
4131 return -EIO;
4132 }
4133
4134 *page_vec = bvec;
4135 return 0;
4136}
4137
4326ed2f
PS		 4138static int
4139handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
4140 char *buf, unsigned int buf_len, struct page **pages,
4141 unsigned int npages, unsigned int page_data_size)
4142{
4143 unsigned int data_offset;
4144 unsigned int data_len;
c42a6abe
PS		 4145 unsigned int cur_off;
4146 unsigned int cur_page_idx;
4147 unsigned int pad_len;
4326ed2f 4148 struct cifs_readdata *rdata = mid->callback_data;
49f466bd 4149 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
4326ed2f
PS		 4150 struct bio_vec *bvec = NULL;
4151 struct iov_iter iter;
4152 struct kvec iov;
4153 int length;
74dcf418 4154 bool use_rdma_mr = false;
4326ed2f
PS		 4155
4156 if (shdr->Command != SMB2_READ) {
3175eb9b 4157 cifs_server_dbg(VFS, "only big read responses are supported\n");
4326ed2f
PS		 4158 return -ENOTSUPP;
4159 }
4160
511c54a2
PS		 4161 if (server->ops->is_session_expired &&
4162 server->ops->is_session_expired(buf)) {
4163 cifs_reconnect(server);
511c54a2
PS		 4164 return -1;
4165 }
4166
4326ed2f 4167 if (server->ops->is_status_pending &&
66265f13 4168 server->ops->is_status_pending(buf, server))
4326ed2f
PS		 4169 return -1;
4170
ec678eae
PS		 4171 /* set up first two iov to get credits */
4172 rdata->iov[0].iov_base = buf;
bb1bccb6
PS		 4173 rdata->iov[0].iov_len = 0;
4174 rdata->iov[1].iov_base = buf;
ec678eae 4175 rdata->iov[1].iov_len =
bb1bccb6 4176 min_t(unsigned int, buf_len, server->vals->read_rsp_size);
ec678eae
PS		 4177 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
4178 rdata->iov[0].iov_base, rdata->iov[0].iov_len);
4179 cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
4180 rdata->iov[1].iov_base, rdata->iov[1].iov_len);
4181
4182 rdata->result = server->ops->map_error(buf, true);
4326ed2f
PS		 4183 if (rdata->result != 0) {
4184 cifs_dbg(FYI, "%s: server returned error %d\n",
4185 __func__, rdata->result);
ec678eae
PS		 4186 /* normal error on read response */
4187 dequeue_mid(mid, false);
4326ed2f
PS		 4188 return 0;
4189 }
4190
1fc6ad2f 4191 data_offset = server->ops->read_data_offset(buf);
74dcf418
LL		 4192#ifdef CONFIG_CIFS_SMB_DIRECT
4193 use_rdma_mr = rdata->mr;
4194#endif
4195 data_len = server->ops->read_data_length(buf, use_rdma_mr);
4326ed2f
PS		 4196
4197 if (data_offset < server->vals->read_rsp_size) {
4198 /*
4199 * win2k8 sometimes sends an offset of 0 when the read
4200 * is beyond the EOF. Treat it as if the data starts just after
4201 * the header.
4202 */
4203 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
4204 __func__, data_offset);
4205 data_offset = server->vals->read_rsp_size;
4206 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
4207 /* data_offset is beyond the end of smallbuf */
4208 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
4209 __func__, data_offset);
4210 rdata->result = -EIO;
4211 dequeue_mid(mid, rdata->result);
4212 return 0;
4213 }
4214
c42a6abe
PS		 4215 pad_len = data_offset - server->vals->read_rsp_size;
4216
4326ed2f
PS		 4217 if (buf_len <= data_offset) {
4218 /* read response payload is in pages */
c42a6abe
PS		 4219 cur_page_idx = pad_len / PAGE_SIZE;
4220 cur_off = pad_len % PAGE_SIZE;
4221
4222 if (cur_page_idx != 0) {
4223 /* data offset is beyond the 1st page of response */
4224 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
4225 __func__, data_offset);
4226 rdata->result = -EIO;
4227 dequeue_mid(mid, rdata->result);
4228 return 0;
4229 }
4230
4231 if (data_len > page_data_size - pad_len) {
4232 /* data_len is corrupt -- discard frame */
4233 rdata->result = -EIO;
4234 dequeue_mid(mid, rdata->result);
4235 return 0;
4236 }
4237
4238 rdata->result = init_read_bvec(pages, npages, page_data_size,
4239 cur_off, &bvec);
4240 if (rdata->result != 0) {
4241 dequeue_mid(mid, rdata->result);
4242 return 0;
4243 }
4244
aa563d7b 4245 iov_iter_bvec(&iter, WRITE, bvec, npages, data_len);
4326ed2f
PS		 4246 } else if (buf_len >= data_offset + data_len) {
4247 /* read response payload is in buf */
4248 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
4249 iov.iov_base = buf + data_offset;
4250 iov.iov_len = data_len;
aa563d7b 4251 iov_iter_kvec(&iter, WRITE, &iov, 1, data_len);
4326ed2f
PS		 4252 } else {
4253 /* read response payload cannot be in both buf and pages */
4254 WARN_ONCE(1, "buf can not contain only a part of read data");
4255 rdata->result = -EIO;
4256 dequeue_mid(mid, rdata->result);
4257 return 0;
4258 }
4259
4326ed2f
PS		 4260 length = rdata->copy_into_pages(server, rdata, &iter);
4261
4262 kfree(bvec);
4263
4264 if (length < 0)
4265 return length;
4266
4267 dequeue_mid(mid, false);
4268 return length;
4269}
4270
35cf94a3
SF		 4271struct smb2_decrypt_work {
4272 struct work_struct decrypt;
4273 struct TCP_Server_Info *server;
4274 struct page **ppages;
4275 char *buf;
4276 unsigned int npages;
4277 unsigned int len;
4278};
4279
4280
4281static void smb2_decrypt_offload(struct work_struct *work)
4282{
4283 struct smb2_decrypt_work *dw = container_of(work,
4284 struct smb2_decrypt_work, decrypt);
4285 int i, rc;
4286 struct mid_q_entry *mid;
4287
4288 rc = decrypt_raw_data(dw->server, dw->buf, dw->server->vals->read_rsp_size,
4289 dw->ppages, dw->npages, dw->len);
4290 if (rc) {
4291 cifs_dbg(VFS, "error decrypting rc=%d\n", rc);
4292 goto free_pages;
4293 }
4294
2255397c 4295 dw->server->lstrp = jiffies;
35cf94a3
SF		 4296 mid = smb2_find_mid(dw->server, dw->buf);
4297 if (mid == NULL)
4298 cifs_dbg(FYI, "mid not found\n");
4299 else {
4300 mid->decrypted = true;
4301 rc = handle_read_data(dw->server, mid, dw->buf,
4302 dw->server->vals->read_rsp_size,
4303 dw->ppages, dw->npages, dw->len);
2255397c
SF		 4304 mid->callback(mid);
4305 cifs_mid_q_entry_release(mid);
35cf94a3
SF		 4306 }
4307
35cf94a3
SF		 4308free_pages:
4309 for (i = dw->npages-1; i >= 0; i--)
4310 put_page(dw->ppages[i]);
4311
4312 kfree(dw->ppages);
4313 cifs_small_buf_release(dw->buf);
a08d897b 4314 kfree(dw);
35cf94a3
SF		 4315}
4316
4317
c42a6abe 4318static int
35cf94a3
SF		 4319receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid,
4320 int *num_mids)
c42a6abe
PS		 4321{
4322 char *buf = server->smallbuf;
4323 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
4324 unsigned int npages;
4325 struct page **pages;
4326 unsigned int len;
1fc6ad2f 4327 unsigned int buflen = server->pdu_size;
c42a6abe
PS		 4328 int rc;
4329 int i = 0;
35cf94a3 4330 struct smb2_decrypt_work *dw;
c42a6abe 4331
35cf94a3 4332 *num_mids = 1;
1fc6ad2f 4333 len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
c42a6abe
PS		 4334 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
4335
4336 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
4337 if (rc < 0)
4338 return rc;
4339 server->total_read += rc;
4340
1fc6ad2f 4341 len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
93012bf9 4342 server->vals->read_rsp_size;
c42a6abe
PS		 4343 npages = DIV_ROUND_UP(len, PAGE_SIZE);
4344
4345 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
4346 if (!pages) {
4347 rc = -ENOMEM;
4348 goto discard_data;
4349 }
4350
4351 for (; i < npages; i++) {
4352 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
4353 if (!pages[i]) {
4354 rc = -ENOMEM;
4355 goto discard_data;
4356 }
4357 }
4358
4359 /* read read data into pages */
4360 rc = read_data_into_pages(server, pages, npages, len);
4361 if (rc)
4362 goto free_pages;
4363
350be257 4364 rc = cifs_discard_remaining_data(server);
c42a6abe
PS		 4365 if (rc)
4366 goto free_pages;
4367
35cf94a3
SF		 4368 /*
4369 * For large reads, offload to different thread for better performance,
4370 * use more cores decrypting which can be expensive
4371 */
4372
10328c44 4373 if ((server->min_offload) && (server->in_flight > 1) &&
563317ec 4374 (server->pdu_size >= server->min_offload)) {
35cf94a3
SF		 4375 dw = kmalloc(sizeof(struct smb2_decrypt_work), GFP_KERNEL);
4376 if (dw == NULL)
4377 goto non_offloaded_decrypt;
4378
4379 dw->buf = server->smallbuf;
4380 server->smallbuf = (char *)cifs_small_buf_get();
4381
4382 INIT_WORK(&dw->decrypt, smb2_decrypt_offload);
4383
4384 dw->npages = npages;
4385 dw->server = server;
4386 dw->ppages = pages;
4387 dw->len = len;
a08d897b 4388 queue_work(decrypt_wq, &dw->decrypt);
35cf94a3
SF		 4389 *num_mids = 0; /* worker thread takes care of finding mid */
4390 return -1;
4391 }
4392
4393non_offloaded_decrypt:
1fc6ad2f 4394 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
c42a6abe
PS		 4395 pages, npages, len);
4396 if (rc)
4397 goto free_pages;
4398
4399 *mid = smb2_find_mid(server, buf);
4400 if (*mid == NULL)
4401 cifs_dbg(FYI, "mid not found\n");
4402 else {
4403 cifs_dbg(FYI, "mid found\n");
4404 (*mid)->decrypted = true;
4405 rc = handle_read_data(server, *mid, buf,
4406 server->vals->read_rsp_size,
4407 pages, npages, len);
4408 }
4409
4410free_pages:
4411 for (i = i - 1; i >= 0; i--)
4412 put_page(pages[i]);
4413 kfree(pages);
4414 return rc;
4415discard_data:
350be257 4416 cifs_discard_remaining_data(server);
c42a6abe
PS		 4417 goto free_pages;
4418}
4419
4326ed2f
PS		 4420static int
4421receive_encrypted_standard(struct TCP_Server_Info *server,
b24df3e3
RS		 4422 struct mid_q_entry **mids, char **bufs,
4423 int *num_mids)
4326ed2f 4424{
b24df3e3 4425 int ret, length;
4326ed2f 4426 char *buf = server->smallbuf;
b24df3e3 4427 struct smb2_sync_hdr *shdr;
2e96467d 4428 unsigned int pdu_length = server->pdu_size;
4326ed2f
PS		 4429 unsigned int buf_size;
4430 struct mid_q_entry *mid_entry;
b24df3e3
RS		 4431 int next_is_large;
4432 char *next_buffer = NULL;
4433
4434 *num_mids = 0;
4326ed2f
PS		 4435
4436 /* switch to large buffer if too big for a small one */
1fc6ad2f 4437 if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
4326ed2f
PS		 4438 server->large_buf = true;
4439 memcpy(server->bigbuf, buf, server->total_read);
4440 buf = server->bigbuf;
4441 }
4442
4443 /* now read the rest */
4444 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
1fc6ad2f 4445 pdu_length - HEADER_SIZE(server) + 1);
4326ed2f
PS		 4446 if (length < 0)
4447 return length;
4448 server->total_read += length;
4449
1fc6ad2f 4450 buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
4326ed2f
PS		 4451 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
4452 if (length)
4453 return length;
4454
b24df3e3 4455 next_is_large = server->large_buf;
3edeb4a4 4456one_more:
b24df3e3
RS		 4457 shdr = (struct smb2_sync_hdr *)buf;
4458 if (shdr->NextCommand) {
3edeb4a4 4459 if (next_is_large)
b24df3e3 4460 next_buffer = (char *)cifs_buf_get();
3edeb4a4 4461 else
b24df3e3 4462 next_buffer = (char *)cifs_small_buf_get();
b24df3e3 4463 memcpy(next_buffer,
3edeb4a4 4464 buf + le32_to_cpu(shdr->NextCommand),
b24df3e3
RS		 4465 pdu_length - le32_to_cpu(shdr->NextCommand));
4466 }
4467
4326ed2f
PS		 4468 mid_entry = smb2_find_mid(server, buf);
4469 if (mid_entry == NULL)
4470 cifs_dbg(FYI, "mid not found\n");
4471 else {
4472 cifs_dbg(FYI, "mid found\n");
4473 mid_entry->decrypted = true;
b24df3e3 4474 mid_entry->resp_buf_size = server->pdu_size;
4326ed2f
PS		 4475 }
4476
b24df3e3 4477 if (*num_mids >= MAX_COMPOUND) {
3175eb9b 4478 cifs_server_dbg(VFS, "too many PDUs in compound\n");
b24df3e3
RS		 4479 return -1;
4480 }
4481 bufs[*num_mids] = buf;
4482 mids[(*num_mids)++] = mid_entry;
4326ed2f
PS		 4483
4484 if (mid_entry && mid_entry->handle)
b24df3e3
RS		 4485 ret = mid_entry->handle(server, mid_entry);
4486 else
4487 ret = cifs_handle_standard(server, mid_entry);
4488
4489 if (ret == 0 && shdr->NextCommand) {
4490 pdu_length -= le32_to_cpu(shdr->NextCommand);
4491 server->large_buf = next_is_large;
4492 if (next_is_large)
3edeb4a4 4493 server->bigbuf = buf = next_buffer;
b24df3e3 4494 else
3edeb4a4 4495 server->smallbuf = buf = next_buffer;
b24df3e3 4496 goto one_more;
3edeb4a4
PS		 4497 } else if (ret != 0) {
4498 /*
4499 * ret != 0 here means that we didn't get to handle_mid() thus
4500 * server->smallbuf and server->bigbuf are still valid. We need
4501 * to free next_buffer because it is not going to be used
4502 * anywhere.
4503 */
4504 if (next_is_large)
4505 free_rsp_buf(CIFS_LARGE_BUFFER, next_buffer);
4506 else
4507 free_rsp_buf(CIFS_SMALL_BUFFER, next_buffer);
b24df3e3 4508 }
4326ed2f 4509
b24df3e3 4510 return ret;
4326ed2f
PS		 4511}
4512
4513static int
b24df3e3
RS		 4514smb3_receive_transform(struct TCP_Server_Info *server,
4515 struct mid_q_entry **mids, char **bufs, int *num_mids)
4326ed2f
PS		 4516{
4517 char *buf = server->smallbuf;
2e96467d 4518 unsigned int pdu_length = server->pdu_size;
4326ed2f
PS		 4519 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
4520 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
4521
1fc6ad2f 4522 if (pdu_length < sizeof(struct smb2_transform_hdr) +
4326ed2f 4523 sizeof(struct smb2_sync_hdr)) {
3175eb9b 4524 cifs_server_dbg(VFS, "Transform message is too small (%u)\n",
4326ed2f
PS		 4525 pdu_length);
4526 cifs_reconnect(server);
4326ed2f
PS		 4527 return -ECONNABORTED;
4528 }
4529
1fc6ad2f 4530 if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
3175eb9b 4531 cifs_server_dbg(VFS, "Transform message is broken\n");
4326ed2f 4532 cifs_reconnect(server);
4326ed2f
PS		 4533 return -ECONNABORTED;
4534 }
4535
b24df3e3 4536 /* TODO: add support for compounds containing READ. */
6d2f84ee 4537 if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) {
35cf94a3 4538 return receive_encrypted_read(server, &mids[0], num_mids);
6d2f84ee 4539 }
4326ed2f 4540
b24df3e3 4541 return receive_encrypted_standard(server, mids, bufs, num_mids);
4326ed2f
PS		 4542}
4543
4544int
4545smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
4546{
4547 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
4548
1fc6ad2f 4549 return handle_read_data(server, mid, buf, server->pdu_size,
4326ed2f
PS		 4550 NULL, 0, 0);
4551}
4552
8ce79ec3
RS		 4553static int
4554smb2_next_header(char *buf)
4555{
4556 struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf;
4557 struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
4558
4559 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM)
4560 return sizeof(struct smb2_transform_hdr) +
4561 le32_to_cpu(t_hdr->OriginalMessageSize);
4562
4563 return le32_to_cpu(hdr->NextCommand);
4564}
4565
c847dccf
AA		 4566static int
4567smb2_make_node(unsigned int xid, struct inode *inode,
4568 struct dentry *dentry, struct cifs_tcon *tcon,
4569 char *full_path, umode_t mode, dev_t dev)
4570{
4571 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
4572 int rc = -EPERM;
c847dccf
AA		 4573 FILE_ALL_INFO *buf = NULL;
4574 struct cifs_io_parms io_parms;
4575 __u32 oplock = 0;
4576 struct cifs_fid fid;
4577 struct cifs_open_parms oparms;
4578 unsigned int bytes_written;
4579 struct win_dev *pdev;
4580 struct kvec iov[2];
4581
4582 /*
4583 * Check if mounted with mount parm 'sfu' mount parm.
4584 * SFU emulation should work with all servers, but only
4585 * supports block and char device (no socket & fifo),
4586 * and was used by default in earlier versions of Windows
4587 */
4588 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
4589 goto out;
4590
4591 /*
4592 * TODO: Add ability to create instead via reparse point. Windows (e.g.
4593 * their current NFS server) uses this approach to expose special files
4594 * over SMB2/SMB3 and Samba will do this with SMB3.1.1 POSIX Extensions
4595 */
4596
4597 if (!S_ISCHR(mode) && !S_ISBLK(mode))
4598 goto out;
4599
4600 cifs_dbg(FYI, "sfu compat create special file\n");
4601
4602 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
4603 if (buf == NULL) {
4604 rc = -ENOMEM;
4605 goto out;
4606 }
4607
c847dccf
AA		 4608 oparms.tcon = tcon;
4609 oparms.cifs_sb = cifs_sb;
4610 oparms.desired_access = GENERIC_WRITE;
0f060936
AG		 4611 oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
4612 CREATE_OPTION_SPECIAL);
c847dccf
AA		 4613 oparms.disposition = FILE_CREATE;
4614 oparms.path = full_path;
4615 oparms.fid = &fid;
4616 oparms.reconnect = false;
4617
4618 if (tcon->ses->server->oplocks)
4619 oplock = REQ_OPLOCK;
4620 else
4621 oplock = 0;
4622 rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf);
4623 if (rc)
4624 goto out;
4625
4626 /*
4627 * BB Do not bother to decode buf since no local inode yet to put
4628 * timestamps in, but we can reuse it safely.
4629 */
4630
4631 pdev = (struct win_dev *)buf;
4632 io_parms.pid = current->tgid;
4633 io_parms.tcon = tcon;
4634 io_parms.offset = 0;
4635 io_parms.length = sizeof(struct win_dev);
4636 iov[1].iov_base = buf;
4637 iov[1].iov_len = sizeof(struct win_dev);
4638 if (S_ISCHR(mode)) {
4639 memcpy(pdev->type, "IntxCHR", 8);
4640 pdev->major = cpu_to_le64(MAJOR(dev));
4641 pdev->minor = cpu_to_le64(MINOR(dev));
4642 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
4643 &bytes_written, iov, 1);
4644 } else if (S_ISBLK(mode)) {
4645 memcpy(pdev->type, "IntxBLK", 8);
4646 pdev->major = cpu_to_le64(MAJOR(dev));
4647 pdev->minor = cpu_to_le64(MINOR(dev));
4648 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
4649 &bytes_written, iov, 1);
4650 }
4651 tcon->ses->server->ops->close(xid, tcon, &fid);
4652 d_drop(dentry);
4653
4654 /* FIXME: add code here to set EAs */
4655out:
4656 kfree(buf);
4657 return rc;
4658}
4659
4660
53ef1016 4661struct smb_version_operations smb20_operations = {
027e8eec 4662 .compare_fids = smb2_compare_fids,
2dc7e1c0 4663 .setup_request = smb2_setup_request,
c95b8eed 4664 .setup_async_request = smb2_setup_async_request,
2dc7e1c0 4665 .check_receive = smb2_check_receive,
28ea5290
PS		 4666 .add_credits = smb2_add_credits,
4667 .set_credits = smb2_set_credits,
4668 .get_credits_field = smb2_get_credits_field,
4669 .get_credits = smb2_get_credits,
cb7e9eab 4670 .wait_mtu_credits = cifs_wait_mtu_credits,
2dc7e1c0 4671 .get_next_mid = smb2_get_next_mid,
c781af7e 4672 .revert_current_mid = smb2_revert_current_mid,
09a4707e
PS		 4673 .read_data_offset = smb2_read_data_offset,
4674 .read_data_length = smb2_read_data_length,
4675 .map_error = map_smb2_to_linux_error,
093b2bda
PS		 4676 .find_mid = smb2_find_mid,
4677 .check_message = smb2_check_message,
4678 .dump_detail = smb2_dump_detail,
d60622eb
PS		 4679 .clear_stats = smb2_clear_stats,
4680 .print_stats = smb2_print_stats,
983c88a4 4681 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 4682 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 4683 .downgrade_oplock = smb2_downgrade_oplock,
ec2e4523
PS		 4684 .need_neg = smb2_need_neg,
4685 .negotiate = smb2_negotiate,
3a3bab50
PS		 4686 .negotiate_wsize = smb2_negotiate_wsize,
4687 .negotiate_rsize = smb2_negotiate_rsize,
5478f9ba
PS		 4688 .sess_setup = SMB2_sess_setup,
4689 .logoff = SMB2_logoff,
faaf946a
PS		 4690 .tree_connect = SMB2_tcon,
4691 .tree_disconnect = SMB2_tdis,
34f62640 4692 .qfs_tcon = smb2_qfs_tcon,
2503a0db 4693 .is_path_accessible = smb2_is_path_accessible,
9094fad1
PS		 4694 .can_echo = smb2_can_echo,
4695 .echo = SMB2_echo,
be4cb9e3
PS		 4696 .query_path_info = smb2_query_path_info,
4697 .get_srv_inum = smb2_get_srv_inum,
b7546bc5 4698 .query_file_info = smb2_query_file_info,
c839ff24
PS		 4699 .set_path_size = smb2_set_path_size,
4700 .set_file_size = smb2_set_file_size,
1feeaac7 4701 .set_file_info = smb2_set_file_info,
64a5cfa6 4702 .set_compression = smb2_set_compression,
a0e73183
PS		 4703 .mkdir = smb2_mkdir,
4704 .mkdir_setinfo = smb2_mkdir_setinfo,
1a500f01 4705 .rmdir = smb2_rmdir,
cbe6f439 4706 .unlink = smb2_unlink,
35143eb5 4707 .rename = smb2_rename_path,
568798cc 4708 .create_hardlink = smb2_create_hardlink,
b42bf888 4709 .query_symlink = smb2_query_symlink,
5b23c97d
SP		 4710 .query_mf_symlink = smb3_query_mf_symlink,
4711 .create_mf_symlink = smb3_create_mf_symlink,
f0df737e
PS		 4712 .open = smb2_open_file,
4713 .set_fid = smb2_set_fid,
4714 .close = smb2_close_file,
7a5cfb19 4715 .flush = smb2_flush_file,
09a4707e 4716 .async_readv = smb2_async_readv,
33319141 4717 .async_writev = smb2_async_writev,
d8e05039 4718 .sync_read = smb2_sync_read,
009d3443 4719 .sync_write = smb2_sync_write,
d324f08d
PS		 4720 .query_dir_first = smb2_query_dir_first,
4721 .query_dir_next = smb2_query_dir_next,
4722 .close_dir = smb2_close_dir,
4723 .calc_smb_size = smb2_calc_size,
2e44b288 4724 .is_status_pending = smb2_is_status_pending,
511c54a2 4725 .is_session_expired = smb2_is_session_expired,
983c88a4 4726 .oplock_response = smb2_oplock_response,
6fc05c25 4727 .queryfs = smb2_queryfs,
f7ba7fe6
PS		 4728 .mand_lock = smb2_mand_lock,
4729 .mand_unlock_range = smb2_unlock_range,
b140799a 4730 .push_mand_locks = smb2_push_mandatory_locks,
b8c32dbb
PS		 4731 .get_lease_key = smb2_get_lease_key,
4732 .set_lease_key = smb2_set_lease_key,
4733 .new_lease_key = smb2_new_lease_key,
38107d45 4734 .calc_signature = smb2_calc_signature,
53ef1016
PS		 4735 .is_read_op = smb2_is_read_op,
4736 .set_oplock_level = smb2_set_oplock_level,
a41a28bd 4737 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 4738 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 4739 .copychunk_range = smb2_copychunk_range,
7f6c5008 4740 .wp_retry_size = smb2_wp_retry_size,
52755808 4741 .dir_needs_close = smb2_dir_needs_close,
9d49640a 4742 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 4743 .select_sectype = smb2_select_sectype,
95907fea
RS		 4744#ifdef CONFIG_CIFS_XATTR
4745 .query_all_EAs = smb2_query_eas,
5517554e 4746 .set_EA = smb2_set_ea,
95907fea 4747#endif /* CIFS_XATTR */
2f1afe25
SP		 4748 .get_acl = get_smb2_acl,
4749 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 4750 .set_acl = set_smb2_acl,
8ce79ec3 4751 .next_header = smb2_next_header,
f5b05d62 4752 .ioctl_query_info = smb2_ioctl_query_info,
c847dccf 4753 .make_node = smb2_make_node,
2f3ebaba 4754 .fiemap = smb3_fiemap,
dece44e3 4755 .llseek = smb3_llseek,
38107d45
SF		 4756};
4757
53ef1016
PS		 4758struct smb_version_operations smb21_operations = {
4759 .compare_fids = smb2_compare_fids,
4760 .setup_request = smb2_setup_request,
4761 .setup_async_request = smb2_setup_async_request,
4762 .check_receive = smb2_check_receive,
4763 .add_credits = smb2_add_credits,
4764 .set_credits = smb2_set_credits,
4765 .get_credits_field = smb2_get_credits_field,
4766 .get_credits = smb2_get_credits,
cb7e9eab 4767 .wait_mtu_credits = smb2_wait_mtu_credits,
9a1c67e8 4768 .adjust_credits = smb2_adjust_credits,
53ef1016 4769 .get_next_mid = smb2_get_next_mid,
c781af7e 4770 .revert_current_mid = smb2_revert_current_mid,
53ef1016
PS		 4771 .read_data_offset = smb2_read_data_offset,
4772 .read_data_length = smb2_read_data_length,
4773 .map_error = map_smb2_to_linux_error,
4774 .find_mid = smb2_find_mid,
4775 .check_message = smb2_check_message,
4776 .dump_detail = smb2_dump_detail,
4777 .clear_stats = smb2_clear_stats,
4778 .print_stats = smb2_print_stats,
4779 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 4780 .handle_cancelled_mid = smb2_handle_cancelled_mid,
9bd45408 4781 .downgrade_oplock = smb2_downgrade_oplock,
53ef1016
PS		 4782 .need_neg = smb2_need_neg,
4783 .negotiate = smb2_negotiate,
4784 .negotiate_wsize = smb2_negotiate_wsize,
4785 .negotiate_rsize = smb2_negotiate_rsize,
4786 .sess_setup = SMB2_sess_setup,
4787 .logoff = SMB2_logoff,
4788 .tree_connect = SMB2_tcon,
4789 .tree_disconnect = SMB2_tdis,
34f62640 4790 .qfs_tcon = smb2_qfs_tcon,
53ef1016
PS		 4791 .is_path_accessible = smb2_is_path_accessible,
4792 .can_echo = smb2_can_echo,
4793 .echo = SMB2_echo,
4794 .query_path_info = smb2_query_path_info,
4795 .get_srv_inum = smb2_get_srv_inum,
4796 .query_file_info = smb2_query_file_info,
4797 .set_path_size = smb2_set_path_size,
4798 .set_file_size = smb2_set_file_size,
4799 .set_file_info = smb2_set_file_info,
64a5cfa6 4800 .set_compression = smb2_set_compression,
53ef1016
PS		 4801 .mkdir = smb2_mkdir,
4802 .mkdir_setinfo = smb2_mkdir_setinfo,
4803 .rmdir = smb2_rmdir,
4804 .unlink = smb2_unlink,
4805 .rename = smb2_rename_path,
4806 .create_hardlink = smb2_create_hardlink,
4807 .query_symlink = smb2_query_symlink,
c22870ea 4808 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 4809 .create_mf_symlink = smb3_create_mf_symlink,
53ef1016
PS		 4810 .open = smb2_open_file,
4811 .set_fid = smb2_set_fid,
4812 .close = smb2_close_file,
4813 .flush = smb2_flush_file,
4814 .async_readv = smb2_async_readv,
4815 .async_writev = smb2_async_writev,
4816 .sync_read = smb2_sync_read,
4817 .sync_write = smb2_sync_write,
4818 .query_dir_first = smb2_query_dir_first,
4819 .query_dir_next = smb2_query_dir_next,
4820 .close_dir = smb2_close_dir,
4821 .calc_smb_size = smb2_calc_size,
4822 .is_status_pending = smb2_is_status_pending,
511c54a2 4823 .is_session_expired = smb2_is_session_expired,
53ef1016
PS		 4824 .oplock_response = smb2_oplock_response,
4825 .queryfs = smb2_queryfs,
4826 .mand_lock = smb2_mand_lock,
4827 .mand_unlock_range = smb2_unlock_range,
4828 .push_mand_locks = smb2_push_mandatory_locks,
4829 .get_lease_key = smb2_get_lease_key,
4830 .set_lease_key = smb2_set_lease_key,
4831 .new_lease_key = smb2_new_lease_key,
4832 .calc_signature = smb2_calc_signature,
4833 .is_read_op = smb21_is_read_op,
4834 .set_oplock_level = smb21_set_oplock_level,
a41a28bd 4835 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 4836 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 4837 .copychunk_range = smb2_copychunk_range,
7f6c5008 4838 .wp_retry_size = smb2_wp_retry_size,
52755808 4839 .dir_needs_close = smb2_dir_needs_close,
834170c8 4840 .enum_snapshots = smb3_enum_snapshots,
2c6251ad 4841 .notify = smb3_notify,
9d49640a 4842 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 4843 .select_sectype = smb2_select_sectype,
95907fea
RS		 4844#ifdef CONFIG_CIFS_XATTR
4845 .query_all_EAs = smb2_query_eas,
5517554e 4846 .set_EA = smb2_set_ea,
95907fea 4847#endif /* CIFS_XATTR */
2f1afe25
SP		 4848 .get_acl = get_smb2_acl,
4849 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 4850 .set_acl = set_smb2_acl,
8ce79ec3 4851 .next_header = smb2_next_header,
f5b05d62 4852 .ioctl_query_info = smb2_ioctl_query_info,
c847dccf 4853 .make_node = smb2_make_node,
2f3ebaba 4854 .fiemap = smb3_fiemap,
dece44e3 4855 .llseek = smb3_llseek,
53ef1016 4856};
38107d45
SF		 4857
4858struct smb_version_operations smb30_operations = {
4859 .compare_fids = smb2_compare_fids,
4860 .setup_request = smb2_setup_request,
4861 .setup_async_request = smb2_setup_async_request,
4862 .check_receive = smb2_check_receive,
4863 .add_credits = smb2_add_credits,
4864 .set_credits = smb2_set_credits,
4865 .get_credits_field = smb2_get_credits_field,
4866 .get_credits = smb2_get_credits,
cb7e9eab 4867 .wait_mtu_credits = smb2_wait_mtu_credits,
9a1c67e8 4868 .adjust_credits = smb2_adjust_credits,
38107d45 4869 .get_next_mid = smb2_get_next_mid,
c781af7e 4870 .revert_current_mid = smb2_revert_current_mid,
38107d45
SF		 4871 .read_data_offset = smb2_read_data_offset,
4872 .read_data_length = smb2_read_data_length,
4873 .map_error = map_smb2_to_linux_error,
4874 .find_mid = smb2_find_mid,
4875 .check_message = smb2_check_message,
4876 .dump_detail = smb2_dump_detail,
4877 .clear_stats = smb2_clear_stats,
4878 .print_stats = smb2_print_stats,
769ee6a4 4879 .dump_share_caps = smb2_dump_share_caps,
38107d45 4880 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 4881 .handle_cancelled_mid = smb2_handle_cancelled_mid,
9bd45408 4882 .downgrade_oplock = smb3_downgrade_oplock,
38107d45
SF		 4883 .need_neg = smb2_need_neg,
4884 .negotiate = smb2_negotiate,
3d621230
SF		 4885 .negotiate_wsize = smb3_negotiate_wsize,
4886 .negotiate_rsize = smb3_negotiate_rsize,
38107d45
SF		 4887 .sess_setup = SMB2_sess_setup,
4888 .logoff = SMB2_logoff,
4889 .tree_connect = SMB2_tcon,
4890 .tree_disconnect = SMB2_tdis,
af6a12ea 4891 .qfs_tcon = smb3_qfs_tcon,
38107d45
SF		 4892 .is_path_accessible = smb2_is_path_accessible,
4893 .can_echo = smb2_can_echo,
4894 .echo = SMB2_echo,
4895 .query_path_info = smb2_query_path_info,
4896 .get_srv_inum = smb2_get_srv_inum,
4897 .query_file_info = smb2_query_file_info,
4898 .set_path_size = smb2_set_path_size,
4899 .set_file_size = smb2_set_file_size,
4900 .set_file_info = smb2_set_file_info,
64a5cfa6 4901 .set_compression = smb2_set_compression,
38107d45
SF		 4902 .mkdir = smb2_mkdir,
4903 .mkdir_setinfo = smb2_mkdir_setinfo,
4904 .rmdir = smb2_rmdir,
4905 .unlink = smb2_unlink,
4906 .rename = smb2_rename_path,
4907 .create_hardlink = smb2_create_hardlink,
b42bf888 4908 .query_symlink = smb2_query_symlink,
c22870ea 4909 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 4910 .create_mf_symlink = smb3_create_mf_symlink,
38107d45
SF		 4911 .open = smb2_open_file,
4912 .set_fid = smb2_set_fid,
4913 .close = smb2_close_file,
43f8a6a7 4914 .close_getattr = smb2_close_getattr,
38107d45
SF		 4915 .flush = smb2_flush_file,
4916 .async_readv = smb2_async_readv,
4917 .async_writev = smb2_async_writev,
4918 .sync_read = smb2_sync_read,
4919 .sync_write = smb2_sync_write,
4920 .query_dir_first = smb2_query_dir_first,
4921 .query_dir_next = smb2_query_dir_next,
4922 .close_dir = smb2_close_dir,
4923 .calc_smb_size = smb2_calc_size,
4924 .is_status_pending = smb2_is_status_pending,
511c54a2 4925 .is_session_expired = smb2_is_session_expired,
38107d45
SF		 4926 .oplock_response = smb2_oplock_response,
4927 .queryfs = smb2_queryfs,
4928 .mand_lock = smb2_mand_lock,
4929 .mand_unlock_range = smb2_unlock_range,
4930 .push_mand_locks = smb2_push_mandatory_locks,
4931 .get_lease_key = smb2_get_lease_key,
4932 .set_lease_key = smb2_set_lease_key,
4933 .new_lease_key = smb2_new_lease_key,
373512ec 4934 .generate_signingkey = generate_smb30signingkey,
38107d45 4935 .calc_signature = smb3_calc_signature,
b3152e2c 4936 .set_integrity = smb3_set_integrity,
53ef1016 4937 .is_read_op = smb21_is_read_op,
42873b0a 4938 .set_oplock_level = smb3_set_oplock_level,
f047390a
PS		 4939 .create_lease_buf = smb3_create_lease_buf,
4940 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 4941 .copychunk_range = smb2_copychunk_range,
ca9e7a1c 4942 .duplicate_extents = smb2_duplicate_extents,
ff1c038a 4943 .validate_negotiate = smb3_validate_negotiate,
7f6c5008 4944 .wp_retry_size = smb2_wp_retry_size,
52755808 4945 .dir_needs_close = smb2_dir_needs_close,
31742c5a 4946 .fallocate = smb3_fallocate,
834170c8 4947 .enum_snapshots = smb3_enum_snapshots,
d26c2ddd 4948 .notify = smb3_notify,
026e93dc 4949 .init_transform_rq = smb3_init_transform_rq,
4326ed2f
PS		 4950 .is_transform_hdr = smb3_is_transform_hdr,
4951 .receive_transform = smb3_receive_transform,
9d49640a 4952 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 4953 .select_sectype = smb2_select_sectype,
95907fea
RS		 4954#ifdef CONFIG_CIFS_XATTR
4955 .query_all_EAs = smb2_query_eas,
5517554e 4956 .set_EA = smb2_set_ea,
95907fea 4957#endif /* CIFS_XATTR */
2f1afe25
SP		 4958 .get_acl = get_smb2_acl,
4959 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 4960 .set_acl = set_smb2_acl,
8ce79ec3 4961 .next_header = smb2_next_header,
f5b05d62 4962 .ioctl_query_info = smb2_ioctl_query_info,
c847dccf 4963 .make_node = smb2_make_node,
2f3ebaba 4964 .fiemap = smb3_fiemap,
dece44e3 4965 .llseek = smb3_llseek,
1080ef75
SF		 4966};
4967
aab1893d
SF		 4968struct smb_version_operations smb311_operations = {
4969 .compare_fids = smb2_compare_fids,
4970 .setup_request = smb2_setup_request,
4971 .setup_async_request = smb2_setup_async_request,
4972 .check_receive = smb2_check_receive,
4973 .add_credits = smb2_add_credits,
4974 .set_credits = smb2_set_credits,
4975 .get_credits_field = smb2_get_credits_field,
4976 .get_credits = smb2_get_credits,
4977 .wait_mtu_credits = smb2_wait_mtu_credits,
9a1c67e8 4978 .adjust_credits = smb2_adjust_credits,
aab1893d 4979 .get_next_mid = smb2_get_next_mid,
c781af7e 4980 .revert_current_mid = smb2_revert_current_mid,
aab1893d
SF		 4981 .read_data_offset = smb2_read_data_offset,
4982 .read_data_length = smb2_read_data_length,
4983 .map_error = map_smb2_to_linux_error,
4984 .find_mid = smb2_find_mid,
4985 .check_message = smb2_check_message,
4986 .dump_detail = smb2_dump_detail,
4987 .clear_stats = smb2_clear_stats,
4988 .print_stats = smb2_print_stats,
4989 .dump_share_caps = smb2_dump_share_caps,
4990 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 4991 .handle_cancelled_mid = smb2_handle_cancelled_mid,
9bd45408 4992 .downgrade_oplock = smb3_downgrade_oplock,
aab1893d
SF		 4993 .need_neg = smb2_need_neg,
4994 .negotiate = smb2_negotiate,
3d621230
SF		 4995 .negotiate_wsize = smb3_negotiate_wsize,
4996 .negotiate_rsize = smb3_negotiate_rsize,
aab1893d
SF		 4997 .sess_setup = SMB2_sess_setup,
4998 .logoff = SMB2_logoff,
4999 .tree_connect = SMB2_tcon,
5000 .tree_disconnect = SMB2_tdis,
5001 .qfs_tcon = smb3_qfs_tcon,
5002 .is_path_accessible = smb2_is_path_accessible,
5003 .can_echo = smb2_can_echo,
5004 .echo = SMB2_echo,
5005 .query_path_info = smb2_query_path_info,
5006 .get_srv_inum = smb2_get_srv_inum,
5007 .query_file_info = smb2_query_file_info,
5008 .set_path_size = smb2_set_path_size,
5009 .set_file_size = smb2_set_file_size,
5010 .set_file_info = smb2_set_file_info,
5011 .set_compression = smb2_set_compression,
5012 .mkdir = smb2_mkdir,
5013 .mkdir_setinfo = smb2_mkdir_setinfo,
bea851b8 5014 .posix_mkdir = smb311_posix_mkdir,
aab1893d
SF		 5015 .rmdir = smb2_rmdir,
5016 .unlink = smb2_unlink,
5017 .rename = smb2_rename_path,
5018 .create_hardlink = smb2_create_hardlink,
5019 .query_symlink = smb2_query_symlink,
5020 .query_mf_symlink = smb3_query_mf_symlink,
5021 .create_mf_symlink = smb3_create_mf_symlink,
5022 .open = smb2_open_file,
5023 .set_fid = smb2_set_fid,
5024 .close = smb2_close_file,
43f8a6a7 5025 .close_getattr = smb2_close_getattr,
aab1893d
SF		 5026 .flush = smb2_flush_file,
5027 .async_readv = smb2_async_readv,
5028 .async_writev = smb2_async_writev,
5029 .sync_read = smb2_sync_read,
5030 .sync_write = smb2_sync_write,
5031 .query_dir_first = smb2_query_dir_first,
5032 .query_dir_next = smb2_query_dir_next,
5033 .close_dir = smb2_close_dir,
5034 .calc_smb_size = smb2_calc_size,
5035 .is_status_pending = smb2_is_status_pending,
511c54a2 5036 .is_session_expired = smb2_is_session_expired,
aab1893d 5037 .oplock_response = smb2_oplock_response,
2d304217 5038 .queryfs = smb311_queryfs,
aab1893d
SF		 5039 .mand_lock = smb2_mand_lock,
5040 .mand_unlock_range = smb2_unlock_range,
5041 .push_mand_locks = smb2_push_mandatory_locks,
5042 .get_lease_key = smb2_get_lease_key,
5043 .set_lease_key = smb2_set_lease_key,
5044 .new_lease_key = smb2_new_lease_key,
373512ec 5045 .generate_signingkey = generate_smb311signingkey,
aab1893d 5046 .calc_signature = smb3_calc_signature,
b3152e2c 5047 .set_integrity = smb3_set_integrity,
aab1893d
SF		 5048 .is_read_op = smb21_is_read_op,
5049 .set_oplock_level = smb3_set_oplock_level,
5050 .create_lease_buf = smb3_create_lease_buf,
5051 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 5052 .copychunk_range = smb2_copychunk_range,
02b16665 5053 .duplicate_extents = smb2_duplicate_extents,
aab1893d
SF		 5054/* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
5055 .wp_retry_size = smb2_wp_retry_size,
5056 .dir_needs_close = smb2_dir_needs_close,
5057 .fallocate = smb3_fallocate,
834170c8 5058 .enum_snapshots = smb3_enum_snapshots,
d26c2ddd 5059 .notify = smb3_notify,
026e93dc 5060 .init_transform_rq = smb3_init_transform_rq,
4326ed2f
PS		 5061 .is_transform_hdr = smb3_is_transform_hdr,
5062 .receive_transform = smb3_receive_transform,
9d49640a 5063 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 5064 .select_sectype = smb2_select_sectype,
95907fea
RS		 5065#ifdef CONFIG_CIFS_XATTR
5066 .query_all_EAs = smb2_query_eas,
5517554e 5067 .set_EA = smb2_set_ea,
95907fea 5068#endif /* CIFS_XATTR */
c1777df1
RS		 5069 .get_acl = get_smb2_acl,
5070 .get_acl_by_fid = get_smb2_acl_by_fid,
5071 .set_acl = set_smb2_acl,
8ce79ec3 5072 .next_header = smb2_next_header,
f5b05d62 5073 .ioctl_query_info = smb2_ioctl_query_info,
c847dccf 5074 .make_node = smb2_make_node,
2f3ebaba 5075 .fiemap = smb3_fiemap,
dece44e3 5076 .llseek = smb3_llseek,
aab1893d 5077};
aab1893d 5078
dd446b16
SF		 5079struct smb_version_values smb20_values = {
5080 .version_string = SMB20_VERSION_STRING,
5081 .protocol_id = SMB20_PROT_ID,
5082 .req_capabilities = 0, /* MBZ */
5083 .large_lock_type = 0,
5084 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5085 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5086 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 5087 .header_size = sizeof(struct smb2_sync_hdr),
5088 .header_preamble_size = 0,
dd446b16
SF		 5089 .max_header_size = MAX_SMB2_HDR_SIZE,
5090 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5091 .lock_cmd = SMB2_LOCK,
5092 .cap_unix = 0,
5093 .cap_nt_find = SMB2_NT_FIND,
5094 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 5095 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5096 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 5097 .create_lease_size = sizeof(struct create_lease),
dd446b16
SF		 5098};
5099
1080ef75
SF		 5100struct smb_version_values smb21_values = {
5101 .version_string = SMB21_VERSION_STRING,
e4aa25e7
SF		 5102 .protocol_id = SMB21_PROT_ID,
5103 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
5104 .large_lock_type = 0,
5105 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5106 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5107 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 5108 .header_size = sizeof(struct smb2_sync_hdr),
5109 .header_preamble_size = 0,
e4aa25e7
SF		 5110 .max_header_size = MAX_SMB2_HDR_SIZE,
5111 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5112 .lock_cmd = SMB2_LOCK,
5113 .cap_unix = 0,
5114 .cap_nt_find = SMB2_NT_FIND,
5115 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 5116 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5117 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 5118 .create_lease_size = sizeof(struct create_lease),
e4aa25e7
SF		 5119};
5120
9764c02f
SF		 5121struct smb_version_values smb3any_values = {
5122 .version_string = SMB3ANY_VERSION_STRING,
5123 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
f8015683 5124 .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		 5125 .large_lock_type = 0,
5126 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5127 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5128 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 5129 .header_size = sizeof(struct smb2_sync_hdr),
5130 .header_preamble_size = 0,
9764c02f
SF		 5131 .max_header_size = MAX_SMB2_HDR_SIZE,
5132 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5133 .lock_cmd = SMB2_LOCK,
5134 .cap_unix = 0,
5135 .cap_nt_find = SMB2_NT_FIND,
5136 .cap_large_files = SMB2_LARGE_FILES,
5137 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5138 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5139 .create_lease_size = sizeof(struct create_lease_v2),
5140};
5141
5142struct smb_version_values smbdefault_values = {
5143 .version_string = SMBDEFAULT_VERSION_STRING,
5144 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
f8015683 5145 .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		 5146 .large_lock_type = 0,
5147 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5148 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5149 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 5150 .header_size = sizeof(struct smb2_sync_hdr),
5151 .header_preamble_size = 0,
9764c02f
SF		 5152 .max_header_size = MAX_SMB2_HDR_SIZE,
5153 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5154 .lock_cmd = SMB2_LOCK,
5155 .cap_unix = 0,
5156 .cap_nt_find = SMB2_NT_FIND,
5157 .cap_large_files = SMB2_LARGE_FILES,
5158 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5159 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5160 .create_lease_size = sizeof(struct create_lease_v2),
5161};
5162
e4aa25e7
SF		 5163struct smb_version_values smb30_values = {
5164 .version_string = SMB30_VERSION_STRING,
5165 .protocol_id = SMB30_PROT_ID,
f8015683 5166 .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		 5167 .large_lock_type = 0,
5168 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5169 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5170 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 5171 .header_size = sizeof(struct smb2_sync_hdr),
5172 .header_preamble_size = 0,
093b2bda 5173 .max_header_size = MAX_SMB2_HDR_SIZE,
09a4707e 5174 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2dc7e1c0 5175 .lock_cmd = SMB2_LOCK,
29e20f9c
PS		 5176 .cap_unix = 0,
5177 .cap_nt_find = SMB2_NT_FIND,
5178 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 5179 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5180 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 5181 .create_lease_size = sizeof(struct create_lease_v2),
1080ef75 5182};
20b6d8b4
SF		 5183
5184struct smb_version_values smb302_values = {
5185 .version_string = SMB302_VERSION_STRING,
5186 .protocol_id = SMB302_PROT_ID,
f8015683 5187 .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		 5188 .large_lock_type = 0,
5189 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5190 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5191 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 5192 .header_size = sizeof(struct smb2_sync_hdr),
5193 .header_preamble_size = 0,
20b6d8b4
SF		 5194 .max_header_size = MAX_SMB2_HDR_SIZE,
5195 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5196 .lock_cmd = SMB2_LOCK,
5197 .cap_unix = 0,
5198 .cap_nt_find = SMB2_NT_FIND,
5199 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 5200 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5201 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 5202 .create_lease_size = sizeof(struct create_lease_v2),
20b6d8b4 5203};
5f7fbf73 5204
5f7fbf73
SF		 5205struct smb_version_values smb311_values = {
5206 .version_string = SMB311_VERSION_STRING,
5207 .protocol_id = SMB311_PROT_ID,
f8015683 5208 .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		 5209 .large_lock_type = 0,
5210 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5211 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5212 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 5213 .header_size = sizeof(struct smb2_sync_hdr),
5214 .header_preamble_size = 0,
5f7fbf73
SF		 5215 .max_header_size = MAX_SMB2_HDR_SIZE,
5216 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5217 .lock_cmd = SMB2_LOCK,
5218 .cap_unix = 0,
5219 .cap_nt_find = SMB2_NT_FIND,
5220 .cap_large_files = SMB2_LARGE_FILES,
5221 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5222 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5223 .create_lease_size = sizeof(struct create_lease_v2),
5224};
A mirror of Linus' kernel repository