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cifs: change smb2_get_data_area_len to take a smb2_sync_hdr as argument
[linux-2.6-block.git] / fs / cifs / smb2ops.c
CommitLineData
1080ef75
SF		 1/*
2 * SMB2 version specific operations
3 *
4 * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
5 *
6 * This library is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License v2 as published
8 * by the Free Software Foundation.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
3a3bab50 20#include <linux/pagemap.h>
6fc05c25 21#include <linux/vfs.h>
f29ebb47 22#include <linux/falloc.h>
026e93dc 23#include <linux/scatterlist.h>
4fa8e504 24#include <linux/uuid.h>
026e93dc 25#include <crypto/aead.h>
1080ef75 26#include "cifsglob.h"
2dc7e1c0
PS		 27#include "smb2pdu.h"
28#include "smb2proto.h"
28ea5290
PS		 29#include "cifsproto.h"
30#include "cifs_debug.h"
b42bf888 31#include "cifs_unicode.h"
2e44b288 32#include "smb2status.h"
6fc05c25 33#include "smb2glob.h"
834170c8 34#include "cifs_ioctl.h"
09902f8d 35#include "smbdirect.h"
28ea5290
PS		 36
37static int
38change_conf(struct TCP_Server_Info *server)
39{
40 server->credits += server->echo_credits + server->oplock_credits;
41 server->oplock_credits = server->echo_credits = 0;
42 switch (server->credits) {
43 case 0:
44 return -1;
45 case 1:
46 server->echoes = false;
47 server->oplocks = false;
f96637be 48 cifs_dbg(VFS, "disabling echoes and oplocks\n");
28ea5290
PS		 49 break;
50 case 2:
51 server->echoes = true;
52 server->oplocks = false;
53 server->echo_credits = 1;
f96637be 54 cifs_dbg(FYI, "disabling oplocks\n");
28ea5290
PS		 55 break;
56 default:
57 server->echoes = true;
e0ddde9d
SF		 58 if (enable_oplocks) {
59 server->oplocks = true;
60 server->oplock_credits = 1;
61 } else
62 server->oplocks = false;
63
28ea5290 64 server->echo_credits = 1;
28ea5290
PS		 65 }
66 server->credits -= server->echo_credits + server->oplock_credits;
67 return 0;
68}
69
70static void
71smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
72 const int optype)
73{
74 int *val, rc = 0;
75 spin_lock(&server->req_lock);
76 val = server->ops->get_credits_field(server, optype);
77 *val += add;
141891f4
SF		 78 if (*val > 65000) {
79 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
80 printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
81 }
28ea5290 82 server->in_flight--;
ec2e4523 83 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
28ea5290 84 rc = change_conf(server);
983c88a4
PS		 85 /*
86 * Sometimes server returns 0 credits on oplock break ack - we need to
87 * rebalance credits in this case.
88 */
89 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
90 server->oplocks) {
91 if (server->credits > 1) {
92 server->credits--;
93 server->oplock_credits++;
94 }
95 }
28ea5290
PS		 96 spin_unlock(&server->req_lock);
97 wake_up(&server->request_q);
98 if (rc)
99 cifs_reconnect(server);
100}
101
102static void
103smb2_set_credits(struct TCP_Server_Info *server, const int val)
104{
105 spin_lock(&server->req_lock);
106 server->credits = val;
107 spin_unlock(&server->req_lock);
108}
109
110static int *
111smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
112{
113 switch (optype) {
114 case CIFS_ECHO_OP:
115 return &server->echo_credits;
116 case CIFS_OBREAK_OP:
117 return &server->oplock_credits;
118 default:
119 return &server->credits;
120 }
121}
122
123static unsigned int
124smb2_get_credits(struct mid_q_entry *mid)
125{
31473fc4
PS		 126 struct smb2_sync_hdr *shdr = get_sync_hdr(mid->resp_buf);
127
128 return le16_to_cpu(shdr->CreditRequest);
28ea5290 129}
2dc7e1c0 130
cb7e9eab
PS		 131static int
132smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
133 unsigned int *num, unsigned int *credits)
134{
135 int rc = 0;
136 unsigned int scredits;
137
138 spin_lock(&server->req_lock);
139 while (1) {
140 if (server->credits <= 0) {
141 spin_unlock(&server->req_lock);
142 cifs_num_waiters_inc(server);
143 rc = wait_event_killable(server->request_q,
144 has_credits(server, &server->credits));
145 cifs_num_waiters_dec(server);
146 if (rc)
147 return rc;
148 spin_lock(&server->req_lock);
149 } else {
150 if (server->tcpStatus == CifsExiting) {
151 spin_unlock(&server->req_lock);
152 return -ENOENT;
153 }
154
155 scredits = server->credits;
156 /* can deadlock with reopen */
157 if (scredits == 1) {
158 *num = SMB2_MAX_BUFFER_SIZE;
159 *credits = 0;
160 break;
161 }
162
163 /* leave one credit for a possible reopen */
164 scredits--;
165 *num = min_t(unsigned int, size,
166 scredits * SMB2_MAX_BUFFER_SIZE);
167
168 *credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
169 server->credits -= *credits;
170 server->in_flight++;
171 break;
172 }
173 }
174 spin_unlock(&server->req_lock);
175 return rc;
176}
177
2dc7e1c0
PS		 178static __u64
179smb2_get_next_mid(struct TCP_Server_Info *server)
180{
181 __u64 mid;
182 /* for SMB2 we need the current value */
183 spin_lock(&GlobalMid_Lock);
184 mid = server->CurrentMid++;
185 spin_unlock(&GlobalMid_Lock);
186 return mid;
187}
1080ef75 188
093b2bda
PS		 189static struct mid_q_entry *
190smb2_find_mid(struct TCP_Server_Info *server, char *buf)
191{
192 struct mid_q_entry *mid;
31473fc4
PS		 193 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
194 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
093b2bda 195
31473fc4 196 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
373512ec
SF		 197 cifs_dbg(VFS, "encrypted frame parsing not supported yet");
198 return NULL;
199 }
200
093b2bda
PS		 201 spin_lock(&GlobalMid_Lock);
202 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
9235d098 203 if ((mid->mid == wire_mid) &&
093b2bda 204 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
31473fc4 205 (mid->command == shdr->Command)) {
093b2bda
PS		 206 spin_unlock(&GlobalMid_Lock);
207 return mid;
208 }
209 }
210 spin_unlock(&GlobalMid_Lock);
211 return NULL;
212}
213
214static void
14547f7d 215smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
093b2bda
PS		 216{
217#ifdef CONFIG_CIFS_DEBUG2
31473fc4 218 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
093b2bda 219
f96637be 220 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
31473fc4
PS		 221 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
222 shdr->ProcessId);
14547f7d 223 cifs_dbg(VFS, "smb buf %p len %u\n", buf,
71992e62 224 server->ops->calc_smb_size(buf, server));
093b2bda
PS		 225#endif
226}
227
ec2e4523
PS		 228static bool
229smb2_need_neg(struct TCP_Server_Info *server)
230{
231 return server->max_read == 0;
232}
233
234static int
235smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
236{
237 int rc;
238 ses->server->CurrentMid = 0;
239 rc = SMB2_negotiate(xid, ses);
240 /* BB we probably don't need to retry with modern servers */
241 if (rc == -EAGAIN)
242 rc = -EHOSTDOWN;
243 return rc;
244}
245
3a3bab50
PS		 246static unsigned int
247smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
248{
249 struct TCP_Server_Info *server = tcon->ses->server;
250 unsigned int wsize;
251
252 /* start with specified wsize, or default */
253 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
254 wsize = min_t(unsigned int, wsize, server->max_write);
09902f8d 255#ifdef CONFIG_CIFS_SMB_DIRECT
bb4c0419
LL		 256 if (server->rdma) {
257 if (server->sign)
258 wsize = min_t(unsigned int,
259 wsize, server->smbd_conn->max_fragmented_send_size);
260 else
261 wsize = min_t(unsigned int,
09902f8d 262 wsize, server->smbd_conn->max_readwrite_size);
bb4c0419 263 }
09902f8d 264#endif
cb7e9eab
PS		 265 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
266 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 267
3a3bab50
PS		 268 return wsize;
269}
270
271static unsigned int
272smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
273{
274 struct TCP_Server_Info *server = tcon->ses->server;
275 unsigned int rsize;
276
277 /* start with specified rsize, or default */
278 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
279 rsize = min_t(unsigned int, rsize, server->max_read);
09902f8d 280#ifdef CONFIG_CIFS_SMB_DIRECT
bb4c0419
LL		 281 if (server->rdma) {
282 if (server->sign)
283 rsize = min_t(unsigned int,
284 rsize, server->smbd_conn->max_fragmented_recv_size);
285 else
286 rsize = min_t(unsigned int,
09902f8d 287 rsize, server->smbd_conn->max_readwrite_size);
bb4c0419 288 }
09902f8d 289#endif
bed9da02
PS		 290
291 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
292 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 293
3a3bab50
PS		 294 return rsize;
295}
296
c481e9fe
SF		 297#ifdef CONFIG_CIFS_STATS2
298static int
299SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
300{
301 int rc;
302 unsigned int ret_data_len = 0;
303 struct network_interface_info_ioctl_rsp *out_buf;
304
305 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
306 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
307 NULL /* no data input */, 0 /* no data input */,
308 (char **)&out_buf, &ret_data_len);
9ffc5412
SF		 309 if (rc != 0)
310 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
311 else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) {
312 cifs_dbg(VFS, "server returned bad net interface info buf\n");
313 rc = -EINVAL;
314 } else {
c481e9fe
SF		 315 /* Dump info on first interface */
316 cifs_dbg(FYI, "Adapter Capability 0x%x\t",
317 le32_to_cpu(out_buf->Capability));
318 cifs_dbg(FYI, "Link Speed %lld\n",
319 le64_to_cpu(out_buf->LinkSpeed));
9ffc5412 320 }
24df1483 321 kfree(out_buf);
c481e9fe
SF		 322 return rc;
323}
324#endif /* STATS2 */
325
3d4ef9a1
SF		 326/*
327 * Open the directory at the root of a share
328 */
329int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
330{
331 struct cifs_open_parms oparams;
332 int rc;
333 __le16 srch_path = 0; /* Null - since an open of top of share */
334 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
335
336 mutex_lock(&tcon->prfid_mutex);
337 if (tcon->valid_root_fid) {
338 cifs_dbg(FYI, "found a cached root file handle\n");
339 memcpy(pfid, tcon->prfid, sizeof(struct cifs_fid));
340 mutex_unlock(&tcon->prfid_mutex);
341 return 0;
342 }
343
344 oparams.tcon = tcon;
345 oparams.create_options = 0;
346 oparams.desired_access = FILE_READ_ATTRIBUTES;
347 oparams.disposition = FILE_OPEN;
348 oparams.fid = pfid;
349 oparams.reconnect = false;
350
351 rc = SMB2_open(xid, &oparams, &srch_path, &oplock, NULL, NULL);
352 if (rc == 0) {
353 memcpy(tcon->prfid, pfid, sizeof(struct cifs_fid));
354 tcon->valid_root_fid = true;
355 }
356 mutex_unlock(&tcon->prfid_mutex);
357 return rc;
358}
359
af6a12ea
SF		 360static void
361smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
362{
363 int rc;
364 __le16 srch_path = 0; /* Null - open root of share */
365 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
366 struct cifs_open_parms oparms;
367 struct cifs_fid fid;
3d4ef9a1 368 bool no_cached_open = tcon->nohandlecache;
af6a12ea
SF		 369
370 oparms.tcon = tcon;
371 oparms.desired_access = FILE_READ_ATTRIBUTES;
372 oparms.disposition = FILE_OPEN;
373 oparms.create_options = 0;
374 oparms.fid = &fid;
375 oparms.reconnect = false;
376
3d4ef9a1
SF		 377 if (no_cached_open)
378 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
379 else
380 rc = open_shroot(xid, tcon, &fid);
381
af6a12ea
SF		 382 if (rc)
383 return;
384
c481e9fe
SF		 385#ifdef CONFIG_CIFS_STATS2
386 SMB3_request_interfaces(xid, tcon);
387#endif /* STATS2 */
388
af6a12ea
SF		 389 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
390 FS_ATTRIBUTE_INFORMATION);
391 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
392 FS_DEVICE_INFORMATION);
393 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
394 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
3d4ef9a1
SF		 395 if (no_cached_open)
396 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
af6a12ea
SF		 397 return;
398}
399
34f62640
SF		 400static void
401smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
402{
403 int rc;
404 __le16 srch_path = 0; /* Null - open root of share */
405 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
406 struct cifs_open_parms oparms;
407 struct cifs_fid fid;
408
409 oparms.tcon = tcon;
410 oparms.desired_access = FILE_READ_ATTRIBUTES;
411 oparms.disposition = FILE_OPEN;
412 oparms.create_options = 0;
413 oparms.fid = &fid;
414 oparms.reconnect = false;
415
416 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
417 if (rc)
418 return;
419
2167114c
SF		 420 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
421 FS_ATTRIBUTE_INFORMATION);
422 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
423 FS_DEVICE_INFORMATION);
34f62640
SF		 424 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
425 return;
426}
427
2503a0db
PS		 428static int
429smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
430 struct cifs_sb_info *cifs_sb, const char *full_path)
431{
432 int rc;
2503a0db 433 __le16 *utf16_path;
2e44b288 434 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 435 struct cifs_open_parms oparms;
436 struct cifs_fid fid;
2503a0db 437
3d4ef9a1
SF		 438 if ((*full_path == 0) && tcon->valid_root_fid)
439 return 0;
440
2503a0db
PS		 441 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
442 if (!utf16_path)
443 return -ENOMEM;
444
064f6047
PS		 445 oparms.tcon = tcon;
446 oparms.desired_access = FILE_READ_ATTRIBUTES;
447 oparms.disposition = FILE_OPEN;
448 oparms.create_options = 0;
449 oparms.fid = &fid;
9cbc0b73 450 oparms.reconnect = false;
064f6047 451
b42bf888 452 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
2503a0db
PS		 453 if (rc) {
454 kfree(utf16_path);
455 return rc;
456 }
457
064f6047 458 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2503a0db
PS		 459 kfree(utf16_path);
460 return rc;
461}
462
be4cb9e3
PS		 463static int
464smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
465 struct cifs_sb_info *cifs_sb, const char *full_path,
466 u64 *uniqueid, FILE_ALL_INFO *data)
467{
468 *uniqueid = le64_to_cpu(data->IndexNumber);
469 return 0;
470}
471
b7546bc5
PS		 472static int
473smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
474 struct cifs_fid *fid, FILE_ALL_INFO *data)
475{
476 int rc;
477 struct smb2_file_all_info *smb2_data;
478
1bbe4997 479 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
b7546bc5
PS		 480 GFP_KERNEL);
481 if (smb2_data == NULL)
482 return -ENOMEM;
483
484 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
485 smb2_data);
486 if (!rc)
487 move_smb2_info_to_cifs(data, smb2_data);
488 kfree(smb2_data);
489 return rc;
490}
491
1368f155 492#ifdef CONFIG_CIFS_XATTR
95907fea
RS		 493static ssize_t
494move_smb2_ea_to_cifs(char *dst, size_t dst_size,
495 struct smb2_file_full_ea_info *src, size_t src_size,
496 const unsigned char *ea_name)
497{
498 int rc = 0;
499 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
500 char *name, *value;
501 size_t name_len, value_len, user_name_len;
502
503 while (src_size > 0) {
504 name = &src->ea_data[0];
505 name_len = (size_t)src->ea_name_length;
506 value = &src->ea_data[src->ea_name_length + 1];
507 value_len = (size_t)le16_to_cpu(src->ea_value_length);
508
509 if (name_len == 0) {
510 break;
511 }
512
513 if (src_size < 8 + name_len + 1 + value_len) {
514 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
515 rc = -EIO;
516 goto out;
517 }
518
519 if (ea_name) {
520 if (ea_name_len == name_len &&
521 memcmp(ea_name, name, name_len) == 0) {
522 rc = value_len;
523 if (dst_size == 0)
524 goto out;
525 if (dst_size < value_len) {
526 rc = -ERANGE;
527 goto out;
528 }
529 memcpy(dst, value, value_len);
530 goto out;
531 }
532 } else {
533 /* 'user.' plus a terminating null */
534 user_name_len = 5 + 1 + name_len;
535
536 rc += user_name_len;
537
538 if (dst_size >= user_name_len) {
539 dst_size -= user_name_len;
540 memcpy(dst, "user.", 5);
541 dst += 5;
542 memcpy(dst, src->ea_data, name_len);
543 dst += name_len;
544 *dst = 0;
545 ++dst;
546 } else if (dst_size == 0) {
547 /* skip copy - calc size only */
548 } else {
549 /* stop before overrun buffer */
550 rc = -ERANGE;
551 break;
552 }
553 }
554
555 if (!src->next_entry_offset)
556 break;
557
558 if (src_size < le32_to_cpu(src->next_entry_offset)) {
559 /* stop before overrun buffer */
560 rc = -ERANGE;
561 break;
562 }
563 src_size -= le32_to_cpu(src->next_entry_offset);
564 src = (void *)((char *)src +
565 le32_to_cpu(src->next_entry_offset));
566 }
567
568 /* didn't find the named attribute */
569 if (ea_name)
570 rc = -ENODATA;
571
572out:
573 return (ssize_t)rc;
574}
575
576static ssize_t
577smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
578 const unsigned char *path, const unsigned char *ea_name,
579 char *ea_data, size_t buf_size,
580 struct cifs_sb_info *cifs_sb)
581{
582 int rc;
583 __le16 *utf16_path;
584 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
585 struct cifs_open_parms oparms;
586 struct cifs_fid fid;
587 struct smb2_file_full_ea_info *smb2_data;
7cb3def4 588 int ea_buf_size = SMB2_MIN_EA_BUF;
95907fea
RS		 589
590 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
591 if (!utf16_path)
592 return -ENOMEM;
593
594 oparms.tcon = tcon;
595 oparms.desired_access = FILE_READ_EA;
596 oparms.disposition = FILE_OPEN;
597 oparms.create_options = 0;
598 oparms.fid = &fid;
599 oparms.reconnect = false;
600
601 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
602 kfree(utf16_path);
603 if (rc) {
604 cifs_dbg(FYI, "open failed rc=%d\n", rc);
605 return rc;
606 }
607
7cb3def4
RS		 608 while (1) {
609 smb2_data = kzalloc(ea_buf_size, GFP_KERNEL);
610 if (smb2_data == NULL) {
611 SMB2_close(xid, tcon, fid.persistent_fid,
612 fid.volatile_fid);
613 return -ENOMEM;
614 }
615
616 rc = SMB2_query_eas(xid, tcon, fid.persistent_fid,
617 fid.volatile_fid,
618 ea_buf_size, smb2_data);
619
620 if (rc != -E2BIG)
621 break;
622
623 kfree(smb2_data);
624 ea_buf_size <<= 1;
625
626 if (ea_buf_size > SMB2_MAX_EA_BUF) {
627 cifs_dbg(VFS, "EA size is too large\n");
628 SMB2_close(xid, tcon, fid.persistent_fid,
629 fid.volatile_fid);
630 return -ENOMEM;
631 }
95907fea
RS		 632 }
633
95907fea
RS		 634 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
635
ae2cd7fb
PA		 636 /*
637 * If ea_name is NULL (listxattr) and there are no EAs, return 0 as it's
638 * not an error. Otherwise, the specified ea_name was not found.
639 */
95907fea
RS		 640 if (!rc)
641 rc = move_smb2_ea_to_cifs(ea_data, buf_size, smb2_data,
642 SMB2_MAX_EA_BUF, ea_name);
ae2cd7fb
PA		 643 else if (!ea_name && rc == -ENODATA)
644 rc = 0;
95907fea
RS		 645
646 kfree(smb2_data);
647 return rc;
648}
649
5517554e
RS		 650
651static int
652smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
653 const char *path, const char *ea_name, const void *ea_value,
654 const __u16 ea_value_len, const struct nls_table *nls_codepage,
655 struct cifs_sb_info *cifs_sb)
656{
657 int rc;
658 __le16 *utf16_path;
659 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
660 struct cifs_open_parms oparms;
661 struct cifs_fid fid;
662 struct smb2_file_full_ea_info *ea;
663 int ea_name_len = strlen(ea_name);
664 int len;
665
666 if (ea_name_len > 255)
667 return -EINVAL;
668
669 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
670 if (!utf16_path)
671 return -ENOMEM;
672
673 oparms.tcon = tcon;
674 oparms.desired_access = FILE_WRITE_EA;
675 oparms.disposition = FILE_OPEN;
676 oparms.create_options = 0;
677 oparms.fid = &fid;
678 oparms.reconnect = false;
679
680 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
681 kfree(utf16_path);
682 if (rc) {
683 cifs_dbg(FYI, "open failed rc=%d\n", rc);
684 return rc;
685 }
686
687 len = sizeof(ea) + ea_name_len + ea_value_len + 1;
688 ea = kzalloc(len, GFP_KERNEL);
689 if (ea == NULL) {
690 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
691 return -ENOMEM;
692 }
693
694 ea->ea_name_length = ea_name_len;
695 ea->ea_value_length = cpu_to_le16(ea_value_len);
696 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
697 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
698
699 rc = SMB2_set_ea(xid, tcon, fid.persistent_fid, fid.volatile_fid, ea,
700 len);
701 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
702
703 return rc;
704}
1368f155 705#endif
5517554e 706
9094fad1
PS		 707static bool
708smb2_can_echo(struct TCP_Server_Info *server)
709{
710 return server->echoes;
711}
712
d60622eb
PS		 713static void
714smb2_clear_stats(struct cifs_tcon *tcon)
715{
716#ifdef CONFIG_CIFS_STATS
717 int i;
718 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
719 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
720 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
721 }
722#endif
723}
724
769ee6a4
SF		 725static void
726smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
727{
728 seq_puts(m, "\n\tShare Capabilities:");
729 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
730 seq_puts(m, " DFS,");
731 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
732 seq_puts(m, " CONTINUOUS AVAILABILITY,");
733 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
734 seq_puts(m, " SCALEOUT,");
735 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
736 seq_puts(m, " CLUSTER,");
737 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
738 seq_puts(m, " ASYMMETRIC,");
739 if (tcon->capabilities == 0)
740 seq_puts(m, " None");
af6a12ea
SF		 741 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
742 seq_puts(m, " Aligned,");
743 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
744 seq_puts(m, " Partition Aligned,");
745 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
746 seq_puts(m, " SSD,");
747 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
748 seq_puts(m, " TRIM-support,");
749
769ee6a4 750 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
e0386e44 751 seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
af6a12ea
SF		 752 if (tcon->perf_sector_size)
753 seq_printf(m, "\tOptimal sector size: 0x%x",
754 tcon->perf_sector_size);
e0386e44 755 seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
769ee6a4
SF		 756}
757
d60622eb
PS		 758static void
759smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
760{
761#ifdef CONFIG_CIFS_STATS
762 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
763 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
764 seq_printf(m, "\nNegotiates: %d sent %d failed",
765 atomic_read(&sent[SMB2_NEGOTIATE_HE]),
766 atomic_read(&failed[SMB2_NEGOTIATE_HE]));
767 seq_printf(m, "\nSessionSetups: %d sent %d failed",
768 atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
769 atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
d60622eb
PS		 770 seq_printf(m, "\nLogoffs: %d sent %d failed",
771 atomic_read(&sent[SMB2_LOGOFF_HE]),
772 atomic_read(&failed[SMB2_LOGOFF_HE]));
773 seq_printf(m, "\nTreeConnects: %d sent %d failed",
774 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
775 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
776 seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
777 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
778 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
779 seq_printf(m, "\nCreates: %d sent %d failed",
780 atomic_read(&sent[SMB2_CREATE_HE]),
781 atomic_read(&failed[SMB2_CREATE_HE]));
782 seq_printf(m, "\nCloses: %d sent %d failed",
783 atomic_read(&sent[SMB2_CLOSE_HE]),
784 atomic_read(&failed[SMB2_CLOSE_HE]));
785 seq_printf(m, "\nFlushes: %d sent %d failed",
786 atomic_read(&sent[SMB2_FLUSH_HE]),
787 atomic_read(&failed[SMB2_FLUSH_HE]));
788 seq_printf(m, "\nReads: %d sent %d failed",
789 atomic_read(&sent[SMB2_READ_HE]),
790 atomic_read(&failed[SMB2_READ_HE]));
791 seq_printf(m, "\nWrites: %d sent %d failed",
792 atomic_read(&sent[SMB2_WRITE_HE]),
793 atomic_read(&failed[SMB2_WRITE_HE]));
794 seq_printf(m, "\nLocks: %d sent %d failed",
795 atomic_read(&sent[SMB2_LOCK_HE]),
796 atomic_read(&failed[SMB2_LOCK_HE]));
797 seq_printf(m, "\nIOCTLs: %d sent %d failed",
798 atomic_read(&sent[SMB2_IOCTL_HE]),
799 atomic_read(&failed[SMB2_IOCTL_HE]));
800 seq_printf(m, "\nCancels: %d sent %d failed",
801 atomic_read(&sent[SMB2_CANCEL_HE]),
802 atomic_read(&failed[SMB2_CANCEL_HE]));
803 seq_printf(m, "\nEchos: %d sent %d failed",
804 atomic_read(&sent[SMB2_ECHO_HE]),
805 atomic_read(&failed[SMB2_ECHO_HE]));
806 seq_printf(m, "\nQueryDirectories: %d sent %d failed",
807 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
808 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
809 seq_printf(m, "\nChangeNotifies: %d sent %d failed",
810 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
811 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
812 seq_printf(m, "\nQueryInfos: %d sent %d failed",
813 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
814 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
815 seq_printf(m, "\nSetInfos: %d sent %d failed",
816 atomic_read(&sent[SMB2_SET_INFO_HE]),
817 atomic_read(&failed[SMB2_SET_INFO_HE]));
818 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
819 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
820 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
821#endif
822}
823
f0df737e
PS		 824static void
825smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
826{
2b0143b5 827 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
53ef1016
PS		 828 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
829
f0df737e
PS		 830 cfile->fid.persistent_fid = fid->persistent_fid;
831 cfile->fid.volatile_fid = fid->volatile_fid;
42873b0a
PS		 832 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
833 &fid->purge_cache);
18cceb6a 834 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
94f87371 835 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
f0df737e
PS		 836}
837
760ad0ca 838static void
f0df737e
PS		 839smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
840 struct cifs_fid *fid)
841{
760ad0ca 842 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
f0df737e
PS		 843}
844
41c1358e
SF		 845static int
846SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
847 u64 persistent_fid, u64 volatile_fid,
848 struct copychunk_ioctl *pcchunk)
849{
850 int rc;
851 unsigned int ret_data_len;
852 struct resume_key_req *res_key;
853
854 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
855 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
856 NULL, 0 /* no input */,
857 (char **)&res_key, &ret_data_len);
858
859 if (rc) {
860 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
861 goto req_res_key_exit;
862 }
863 if (ret_data_len < sizeof(struct resume_key_req)) {
864 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
865 rc = -EINVAL;
866 goto req_res_key_exit;
867 }
868 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
869
870req_res_key_exit:
871 kfree(res_key);
872 return rc;
873}
874
620d8745 875static ssize_t
312bbc59 876smb2_copychunk_range(const unsigned int xid,
41c1358e
SF		 877 struct cifsFileInfo *srcfile,
878 struct cifsFileInfo *trgtfile, u64 src_off,
879 u64 len, u64 dest_off)
880{
881 int rc;
882 unsigned int ret_data_len;
883 struct copychunk_ioctl *pcchunk;
9bf0c9cd
SF		 884 struct copychunk_ioctl_rsp *retbuf = NULL;
885 struct cifs_tcon *tcon;
886 int chunks_copied = 0;
887 bool chunk_sizes_updated = false;
620d8745 888 ssize_t bytes_written, total_bytes_written = 0;
41c1358e
SF		 889
890 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
891
892 if (pcchunk == NULL)
893 return -ENOMEM;
894
312bbc59 895 cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
41c1358e
SF		 896 /* Request a key from the server to identify the source of the copy */
897 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
898 srcfile->fid.persistent_fid,
899 srcfile->fid.volatile_fid, pcchunk);
900
901 /* Note: request_res_key sets res_key null only if rc !=0 */
902 if (rc)
9bf0c9cd 903 goto cchunk_out;
41c1358e
SF		 904
905 /* For now array only one chunk long, will make more flexible later */
bc09d141 906 pcchunk->ChunkCount = cpu_to_le32(1);
41c1358e 907 pcchunk->Reserved = 0;
41c1358e
SF		 908 pcchunk->Reserved2 = 0;
909
9bf0c9cd 910 tcon = tlink_tcon(trgtfile->tlink);
41c1358e 911
9bf0c9cd
SF		 912 while (len > 0) {
913 pcchunk->SourceOffset = cpu_to_le64(src_off);
914 pcchunk->TargetOffset = cpu_to_le64(dest_off);
915 pcchunk->Length =
916 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
41c1358e 917
9bf0c9cd
SF		 918 /* Request server copy to target from src identified by key */
919 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
920 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
63a83b86 921 true /* is_fsctl */, (char *)pcchunk,
9bf0c9cd
SF		 922 sizeof(struct copychunk_ioctl), (char **)&retbuf,
923 &ret_data_len);
924 if (rc == 0) {
925 if (ret_data_len !=
926 sizeof(struct copychunk_ioctl_rsp)) {
927 cifs_dbg(VFS, "invalid cchunk response size\n");
928 rc = -EIO;
929 goto cchunk_out;
930 }
931 if (retbuf->TotalBytesWritten == 0) {
932 cifs_dbg(FYI, "no bytes copied\n");
933 rc = -EIO;
934 goto cchunk_out;
935 }
936 /*
937 * Check if server claimed to write more than we asked
938 */
939 if (le32_to_cpu(retbuf->TotalBytesWritten) >
940 le32_to_cpu(pcchunk->Length)) {
941 cifs_dbg(VFS, "invalid copy chunk response\n");
942 rc = -EIO;
943 goto cchunk_out;
944 }
945 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
946 cifs_dbg(VFS, "invalid num chunks written\n");
947 rc = -EIO;
948 goto cchunk_out;
949 }
950 chunks_copied++;
951
620d8745
SP		 952 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
953 src_off += bytes_written;
954 dest_off += bytes_written;
955 len -= bytes_written;
956 total_bytes_written += bytes_written;
9bf0c9cd 957
620d8745 958 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
9bf0c9cd
SF		 959 le32_to_cpu(retbuf->ChunksWritten),
960 le32_to_cpu(retbuf->ChunkBytesWritten),
620d8745 961 bytes_written);
9bf0c9cd
SF		 962 } else if (rc == -EINVAL) {
963 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
964 goto cchunk_out;
965
966 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
967 le32_to_cpu(retbuf->ChunksWritten),
968 le32_to_cpu(retbuf->ChunkBytesWritten),
969 le32_to_cpu(retbuf->TotalBytesWritten));
970
971 /*
972 * Check if this is the first request using these sizes,
973 * (ie check if copy succeed once with original sizes
974 * and check if the server gave us different sizes after
975 * we already updated max sizes on previous request).
976 * if not then why is the server returning an error now
977 */
978 if ((chunks_copied != 0) || chunk_sizes_updated)
979 goto cchunk_out;
980
981 /* Check that server is not asking us to grow size */
982 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
983 tcon->max_bytes_chunk)
984 tcon->max_bytes_chunk =
985 le32_to_cpu(retbuf->ChunkBytesWritten);
986 else
987 goto cchunk_out; /* server gave us bogus size */
988
989 /* No need to change MaxChunks since already set to 1 */
990 chunk_sizes_updated = true;
2477bc58
SP		 991 } else
992 goto cchunk_out;
9bf0c9cd 993 }
41c1358e 994
9bf0c9cd 995cchunk_out:
41c1358e 996 kfree(pcchunk);
24df1483 997 kfree(retbuf);
620d8745
SP		 998 if (rc)
999 return rc;
1000 else
1001 return total_bytes_written;
41c1358e
SF		 1002}
1003
7a5cfb19
PS		 1004static int
1005smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1006 struct cifs_fid *fid)
1007{
1008 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1009}
1010
09a4707e
PS		 1011static unsigned int
1012smb2_read_data_offset(char *buf)
1013{
1014 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1015 return rsp->DataOffset;
1016}
1017
1018static unsigned int
74dcf418 1019smb2_read_data_length(char *buf, bool in_remaining)
09a4707e
PS		 1020{
1021 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
74dcf418
LL		 1022
1023 if (in_remaining)
1024 return le32_to_cpu(rsp->DataRemaining);
1025
09a4707e
PS		 1026 return le32_to_cpu(rsp->DataLength);
1027}
1028
d8e05039
PS		 1029
1030static int
db8b631d 1031smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
d8e05039
PS		 1032 struct cifs_io_parms *parms, unsigned int *bytes_read,
1033 char **buf, int *buf_type)
1034{
db8b631d
SF		 1035 parms->persistent_fid = pfid->persistent_fid;
1036 parms->volatile_fid = pfid->volatile_fid;
d8e05039
PS		 1037 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1038}
1039
009d3443 1040static int
db8b631d 1041smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
009d3443
PS		 1042 struct cifs_io_parms *parms, unsigned int *written,
1043 struct kvec *iov, unsigned long nr_segs)
1044{
1045
db8b631d
SF		 1046 parms->persistent_fid = pfid->persistent_fid;
1047 parms->volatile_fid = pfid->volatile_fid;
009d3443
PS		 1048 return SMB2_write(xid, parms, written, iov, nr_segs);
1049}
1050
d43cc793
SF		 1051/* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1052static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1053 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1054{
1055 struct cifsInodeInfo *cifsi;
1056 int rc;
1057
1058 cifsi = CIFS_I(inode);
1059
1060 /* if file already sparse don't bother setting sparse again */
1061 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1062 return true; /* already sparse */
1063
1064 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1065 return true; /* already not sparse */
1066
1067 /*
1068 * Can't check for sparse support on share the usual way via the
1069 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1070 * since Samba server doesn't set the flag on the share, yet
1071 * supports the set sparse FSCTL and returns sparse correctly
1072 * in the file attributes. If we fail setting sparse though we
1073 * mark that server does not support sparse files for this share
1074 * to avoid repeatedly sending the unsupported fsctl to server
1075 * if the file is repeatedly extended.
1076 */
1077 if (tcon->broken_sparse_sup)
1078 return false;
1079
1080 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1081 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
63a83b86 1082 true /* is_fctl */,
51146625 1083 &setsparse, 1, NULL, NULL);
d43cc793
SF		 1084 if (rc) {
1085 tcon->broken_sparse_sup = true;
1086 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1087 return false;
1088 }
1089
1090 if (setsparse)
1091 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1092 else
1093 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1094
1095 return true;
1096}
1097
c839ff24
PS		 1098static int
1099smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1100 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1101{
1102 __le64 eof = cpu_to_le64(size);
3d1a3745
SF		 1103 struct inode *inode;
1104
1105 /*
1106 * If extending file more than one page make sparse. Many Linux fs
1107 * make files sparse by default when extending via ftruncate
1108 */
2b0143b5 1109 inode = d_inode(cfile->dentry);
3d1a3745
SF		 1110
1111 if (!set_alloc && (size > inode->i_size + 8192)) {
3d1a3745 1112 __u8 set_sparse = 1;
d43cc793
SF		 1113
1114 /* whether set sparse succeeds or not, extend the file */
1115 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
3d1a3745
SF		 1116 }
1117
c839ff24 1118 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
f29ebb47 1119 cfile->fid.volatile_fid, cfile->pid, &eof, false);
c839ff24
PS		 1120}
1121
02b16665
SF		 1122static int
1123smb2_duplicate_extents(const unsigned int xid,
1124 struct cifsFileInfo *srcfile,
1125 struct cifsFileInfo *trgtfile, u64 src_off,
1126 u64 len, u64 dest_off)
1127{
1128 int rc;
1129 unsigned int ret_data_len;
02b16665
SF		 1130 struct duplicate_extents_to_file dup_ext_buf;
1131 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1132
1133 /* server fileays advertise duplicate extent support with this flag */
1134 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1135 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1136 return -EOPNOTSUPP;
1137
1138 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1139 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1140 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1141 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1142 dup_ext_buf.ByteCount = cpu_to_le64(len);
1143 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
1144 src_off, dest_off, len);
1145
1146 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1147 if (rc)
1148 goto duplicate_extents_out;
1149
1150 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1151 trgtfile->fid.volatile_fid,
1152 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
63a83b86 1153 true /* is_fsctl */,
51146625 1154 (char *)&dup_ext_buf,
02b16665 1155 sizeof(struct duplicate_extents_to_file),
24df1483 1156 NULL,
02b16665
SF		 1157 &ret_data_len);
1158
1159 if (ret_data_len > 0)
1160 cifs_dbg(FYI, "non-zero response length in duplicate extents");
1161
1162duplicate_extents_out:
1163 return rc;
1164}
02b16665 1165
64a5cfa6
SF		 1166static int
1167smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
1168 struct cifsFileInfo *cfile)
1169{
1170 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
1171 cfile->fid.volatile_fid);
1172}
1173
b3152e2c
SF		 1174static int
1175smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
1176 struct cifsFileInfo *cfile)
1177{
1178 struct fsctl_set_integrity_information_req integr_info;
b3152e2c
SF		 1179 unsigned int ret_data_len;
1180
1181 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
1182 integr_info.Flags = 0;
1183 integr_info.Reserved = 0;
1184
1185 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1186 cfile->fid.volatile_fid,
1187 FSCTL_SET_INTEGRITY_INFORMATION,
63a83b86 1188 true /* is_fsctl */,
51146625 1189 (char *)&integr_info,
b3152e2c 1190 sizeof(struct fsctl_set_integrity_information_req),
24df1483 1191 NULL,
b3152e2c
SF		 1192 &ret_data_len);
1193
1194}
1195
834170c8
SF		 1196static int
1197smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
1198 struct cifsFileInfo *cfile, void __user *ioc_buf)
1199{
1200 char *retbuf = NULL;
1201 unsigned int ret_data_len = 0;
1202 int rc;
1203 struct smb_snapshot_array snapshot_in;
1204
1205 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1206 cfile->fid.volatile_fid,
1207 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
63a83b86 1208 true /* is_fsctl */,
51146625 1209 NULL, 0 /* no input data */,
834170c8
SF		 1210 (char **)&retbuf,
1211 &ret_data_len);
1212 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
1213 rc, ret_data_len);
1214 if (rc)
1215 return rc;
1216
1217 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
1218 /* Fixup buffer */
1219 if (copy_from_user(&snapshot_in, ioc_buf,
1220 sizeof(struct smb_snapshot_array))) {
1221 rc = -EFAULT;
1222 kfree(retbuf);
1223 return rc;
1224 }
1225 if (snapshot_in.snapshot_array_size < sizeof(struct smb_snapshot_array)) {
1226 rc = -ERANGE;
0e5c7955 1227 kfree(retbuf);
834170c8
SF		 1228 return rc;
1229 }
1230
1231 if (ret_data_len > snapshot_in.snapshot_array_size)
1232 ret_data_len = snapshot_in.snapshot_array_size;
1233
1234 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
1235 rc = -EFAULT;
1236 }
1237
1238 kfree(retbuf);
1239 return rc;
1240}
1241
d324f08d
PS		 1242static int
1243smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
1244 const char *path, struct cifs_sb_info *cifs_sb,
1245 struct cifs_fid *fid, __u16 search_flags,
1246 struct cifs_search_info *srch_inf)
1247{
1248 __le16 *utf16_path;
1249 int rc;
2e44b288 1250 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047 1251 struct cifs_open_parms oparms;
d324f08d
PS		 1252
1253 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1254 if (!utf16_path)
1255 return -ENOMEM;
1256
064f6047
PS		 1257 oparms.tcon = tcon;
1258 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
1259 oparms.disposition = FILE_OPEN;
1260 oparms.create_options = 0;
1261 oparms.fid = fid;
9cbc0b73 1262 oparms.reconnect = false;
064f6047 1263
b42bf888 1264 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
d324f08d
PS		 1265 kfree(utf16_path);
1266 if (rc) {
dcd87838 1267 cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
d324f08d
PS		 1268 return rc;
1269 }
1270
1271 srch_inf->entries_in_buffer = 0;
1272 srch_inf->index_of_last_entry = 0;
d324f08d 1273
064f6047
PS		 1274 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
1275 fid->volatile_fid, 0, srch_inf);
d324f08d 1276 if (rc) {
dcd87838 1277 cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
064f6047 1278 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
d324f08d
PS		 1279 }
1280 return rc;
1281}
1282
1283static int
1284smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
1285 struct cifs_fid *fid, __u16 search_flags,
1286 struct cifs_search_info *srch_inf)
1287{
1288 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
1289 fid->volatile_fid, 0, srch_inf);
1290}
1291
1292static int
1293smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1294 struct cifs_fid *fid)
1295{
1296 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1297}
1298
2e44b288
PS		 1299/*
1300* If we negotiate SMB2 protocol and get STATUS_PENDING - update
1301* the number of credits and return true. Otherwise - return false.
1302*/
1303static bool
1304smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
1305{
31473fc4 1306 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
2e44b288 1307
31473fc4 1308 if (shdr->Status != STATUS_PENDING)
2e44b288
PS		 1309 return false;
1310
1311 if (!length) {
1312 spin_lock(&server->req_lock);
31473fc4 1313 server->credits += le16_to_cpu(shdr->CreditRequest);
2e44b288
PS		 1314 spin_unlock(&server->req_lock);
1315 wake_up(&server->request_q);
1316 }
1317
1318 return true;
1319}
1320
511c54a2
PS		 1321static bool
1322smb2_is_session_expired(char *buf)
1323{
1324 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
1325
1326 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED)
1327 return false;
1328
1329 cifs_dbg(FYI, "Session expired\n");
1330 return true;
1331}
1332
983c88a4
PS		 1333static int
1334smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1335 struct cifsInodeInfo *cinode)
1336{
0822f514
PS		 1337 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1338 return SMB2_lease_break(0, tcon, cinode->lease_key,
1339 smb2_get_lease_state(cinode));
1340
983c88a4
PS		 1341 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1342 fid->volatile_fid,
18cceb6a 1343 CIFS_CACHE_READ(cinode) ? 1 : 0);
983c88a4
PS		 1344}
1345
6fc05c25
PS		 1346static int
1347smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1348 struct kstatfs *buf)
1349{
1350 int rc;
6fc05c25
PS		 1351 __le16 srch_path = 0; /* Null - open root of share */
1352 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 1353 struct cifs_open_parms oparms;
1354 struct cifs_fid fid;
1355
1356 oparms.tcon = tcon;
1357 oparms.desired_access = FILE_READ_ATTRIBUTES;
1358 oparms.disposition = FILE_OPEN;
1359 oparms.create_options = 0;
1360 oparms.fid = &fid;
9cbc0b73 1361 oparms.reconnect = false;
6fc05c25 1362
b42bf888 1363 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
6fc05c25
PS		 1364 if (rc)
1365 return rc;
1366 buf->f_type = SMB2_MAGIC_NUMBER;
064f6047
PS		 1367 rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
1368 buf);
1369 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
6fc05c25
PS		 1370 return rc;
1371}
1372
027e8eec
PS		 1373static bool
1374smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
1375{
1376 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
1377 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
1378}
1379
f7ba7fe6
PS		 1380static int
1381smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
1382 __u64 length, __u32 type, int lock, int unlock, bool wait)
1383{
1384 if (unlock && !lock)
1385 type = SMB2_LOCKFLAG_UNLOCK;
1386 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
1387 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
1388 current->tgid, length, offset, type, wait);
1389}
1390
b8c32dbb
PS		 1391static void
1392smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
1393{
1394 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
1395}
1396
1397static void
1398smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
1399{
1400 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
1401}
1402
1403static void
1404smb2_new_lease_key(struct cifs_fid *fid)
1405{
fa70b87c 1406 generate_random_uuid(fid->lease_key);
b8c32dbb
PS		 1407}
1408
9d49640a
AA		 1409static int
1410smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
1411 const char *search_name,
1412 struct dfs_info3_param **target_nodes,
1413 unsigned int *num_of_nodes,
1414 const struct nls_table *nls_codepage, int remap)
1415{
1416 int rc;
1417 __le16 *utf16_path = NULL;
1418 int utf16_path_len = 0;
1419 struct cifs_tcon *tcon;
1420 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
1421 struct get_dfs_referral_rsp *dfs_rsp = NULL;
1422 u32 dfs_req_size = 0, dfs_rsp_size = 0;
1423
1424 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
1425
1426 /*
63a83b86 1427 * Try to use the IPC tcon, otherwise just use any
9d49640a 1428 */
63a83b86
AA		 1429 tcon = ses->tcon_ipc;
1430 if (tcon == NULL) {
1431 spin_lock(&cifs_tcp_ses_lock);
1432 tcon = list_first_entry_or_null(&ses->tcon_list,
1433 struct cifs_tcon,
1434 tcon_list);
1435 if (tcon)
1436 tcon->tc_count++;
1437 spin_unlock(&cifs_tcp_ses_lock);
1438 }
1439
1440 if (tcon == NULL) {
9d49640a
AA		 1441 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
1442 ses);
1443 rc = -ENOTCONN;
1444 goto out;
1445 }
1446
1447 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
1448 &utf16_path_len,
1449 nls_codepage, remap);
1450 if (!utf16_path) {
1451 rc = -ENOMEM;
1452 goto out;
1453 }
1454
1455 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
1456 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
1457 if (!dfs_req) {
1458 rc = -ENOMEM;
1459 goto out;
1460 }
1461
1462 /* Highest DFS referral version understood */
1463 dfs_req->MaxReferralLevel = DFS_VERSION;
1464
1465 /* Path to resolve in an UTF-16 null-terminated string */
1466 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
1467
1468 do {
9d49640a
AA		 1469 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1470 FSCTL_DFS_GET_REFERRALS,
63a83b86 1471 true /* is_fsctl */,
9d49640a
AA		 1472 (char *)dfs_req, dfs_req_size,
1473 (char **)&dfs_rsp, &dfs_rsp_size);
9d49640a
AA		 1474 } while (rc == -EAGAIN);
1475
1476 if (rc) {
2564f2ff 1477 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
5702591f 1478 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
9d49640a
AA		 1479 goto out;
1480 }
1481
1482 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
1483 num_of_nodes, target_nodes,
1484 nls_codepage, remap, search_name,
1485 true /* is_unicode */);
1486 if (rc) {
1487 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
1488 goto out;
1489 }
1490
1491 out:
63a83b86
AA		 1492 if (tcon && !tcon->ipc) {
1493 /* ipc tcons are not refcounted */
9d49640a
AA		 1494 spin_lock(&cifs_tcp_ses_lock);
1495 tcon->tc_count--;
1496 spin_unlock(&cifs_tcp_ses_lock);
1497 }
1498 kfree(utf16_path);
1499 kfree(dfs_req);
1500 kfree(dfs_rsp);
1501 return rc;
1502}
7893242e
PS		 1503#define SMB2_SYMLINK_STRUCT_SIZE \
1504 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
1505
b42bf888
PS		 1506static int
1507smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
1508 const char *full_path, char **target_path,
1509 struct cifs_sb_info *cifs_sb)
1510{
1511 int rc;
1512 __le16 *utf16_path;
1513 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1514 struct cifs_open_parms oparms;
1515 struct cifs_fid fid;
91cb74f5 1516 struct kvec err_iov = {NULL, 0};
0d568cd3 1517 struct smb2_err_rsp *err_buf;
b42bf888 1518 struct smb2_symlink_err_rsp *symlink;
7893242e
PS		 1519 unsigned int sub_len;
1520 unsigned int sub_offset;
1521 unsigned int print_len;
1522 unsigned int print_offset;
93012bf9
RS		 1523 struct cifs_ses *ses = tcon->ses;
1524 struct TCP_Server_Info *server = ses->server;
b42bf888
PS		 1525
1526 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
1527
1528 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
1529 if (!utf16_path)
1530 return -ENOMEM;
1531
1532 oparms.tcon = tcon;
1533 oparms.desired_access = FILE_READ_ATTRIBUTES;
1534 oparms.disposition = FILE_OPEN;
1535 oparms.create_options = 0;
1536 oparms.fid = &fid;
1537 oparms.reconnect = false;
1538
91cb74f5 1539 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_iov);
b42bf888 1540
0d568cd3 1541 if (!rc || !err_iov.iov_base) {
b42bf888
PS		 1542 kfree(utf16_path);
1543 return -ENOENT;
1544 }
7893242e 1545
91cb74f5 1546 err_buf = err_iov.iov_base;
7893242e 1547 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
91cb74f5 1548 err_iov.iov_len + server->vals->header_preamble_size < SMB2_SYMLINK_STRUCT_SIZE) {
7893242e
PS		 1549 kfree(utf16_path);
1550 return -ENOENT;
1551 }
1552
b42bf888
PS		 1553 /* open must fail on symlink - reset rc */
1554 rc = 0;
1555 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
1556 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
1557 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
7893242e
PS		 1558 print_len = le16_to_cpu(symlink->PrintNameLength);
1559 print_offset = le16_to_cpu(symlink->PrintNameOffset);
1560
91cb74f5 1561 if (err_iov.iov_len + server->vals->header_preamble_size <
7893242e
PS		 1562 SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
1563 kfree(utf16_path);
1564 return -ENOENT;
1565 }
1566
91cb74f5 1567 if (err_iov.iov_len + server->vals->header_preamble_size <
7893242e
PS		 1568 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
1569 kfree(utf16_path);
1570 return -ENOENT;
1571 }
1572
b42bf888
PS		 1573 *target_path = cifs_strndup_from_utf16(
1574 (char *)symlink->PathBuffer + sub_offset,
1575 sub_len, true, cifs_sb->local_nls);
1576 if (!(*target_path)) {
1577 kfree(utf16_path);
1578 return -ENOMEM;
1579 }
1580 convert_delimiter(*target_path, '/');
1581 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
1582 kfree(utf16_path);
1583 return rc;
1584}
1585
84908426 1586#ifdef CONFIG_CIFS_ACL
2f1afe25
SP		 1587static struct cifs_ntsd *
1588get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
1589 const struct cifs_fid *cifsfid, u32 *pacllen)
1590{
1591 struct cifs_ntsd *pntsd = NULL;
1592 unsigned int xid;
1593 int rc = -EOPNOTSUPP;
1594 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1595
1596 if (IS_ERR(tlink))
1597 return ERR_CAST(tlink);
1598
1599 xid = get_xid();
1600 cifs_dbg(FYI, "trying to get acl\n");
1601
1602 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
1603 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
1604 free_xid(xid);
1605
1606 cifs_put_tlink(tlink);
1607
1608 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1609 if (rc)
1610 return ERR_PTR(rc);
1611 return pntsd;
1612
1613}
1614
1615static struct cifs_ntsd *
1616get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
1617 const char *path, u32 *pacllen)
1618{
1619 struct cifs_ntsd *pntsd = NULL;
1620 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1621 unsigned int xid;
1622 int rc;
1623 struct cifs_tcon *tcon;
1624 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1625 struct cifs_fid fid;
1626 struct cifs_open_parms oparms;
1627 __le16 *utf16_path;
1628
1629 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
1630 if (IS_ERR(tlink))
1631 return ERR_CAST(tlink);
1632
1633 tcon = tlink_tcon(tlink);
1634 xid = get_xid();
1635
1636 if (backup_cred(cifs_sb))
709340a0 1637 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2f1afe25
SP		 1638 else
1639 oparms.create_options = 0;
1640
1641 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
cfe89091
SF		 1642 if (!utf16_path) {
1643 rc = -ENOMEM;
1644 free_xid(xid);
1645 return ERR_PTR(rc);
1646 }
2f1afe25
SP		 1647
1648 oparms.tcon = tcon;
1649 oparms.desired_access = READ_CONTROL;
1650 oparms.disposition = FILE_OPEN;
1651 oparms.fid = &fid;
1652 oparms.reconnect = false;
1653
1654 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
1655 kfree(utf16_path);
1656 if (!rc) {
1657 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
1658 fid.volatile_fid, (void **)&pntsd, pacllen);
1659 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1660 }
1661
1662 cifs_put_tlink(tlink);
1663 free_xid(xid);
1664
1665 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1666 if (rc)
1667 return ERR_PTR(rc);
1668 return pntsd;
1669}
1670
366ed846
SP		 1671#ifdef CONFIG_CIFS_ACL
1672static int
1673set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
1674 struct inode *inode, const char *path, int aclflag)
1675{
1676 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1677 unsigned int xid;
1678 int rc, access_flags = 0;
1679 struct cifs_tcon *tcon;
1680 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1681 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1682 struct cifs_fid fid;
1683 struct cifs_open_parms oparms;
1684 __le16 *utf16_path;
1685
1686 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
1687 if (IS_ERR(tlink))
1688 return PTR_ERR(tlink);
1689
1690 tcon = tlink_tcon(tlink);
1691 xid = get_xid();
1692
1693 if (backup_cred(cifs_sb))
1694 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1695 else
1696 oparms.create_options = 0;
1697
1698 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
1699 access_flags = WRITE_OWNER;
1700 else
1701 access_flags = WRITE_DAC;
1702
1703 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
cfe89091
SF		 1704 if (!utf16_path) {
1705 rc = -ENOMEM;
1706 free_xid(xid);
1707 return rc;
1708 }
366ed846
SP		 1709
1710 oparms.tcon = tcon;
1711 oparms.desired_access = access_flags;
1712 oparms.disposition = FILE_OPEN;
1713 oparms.path = path;
1714 oparms.fid = &fid;
1715 oparms.reconnect = false;
1716
1717 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
1718 kfree(utf16_path);
1719 if (!rc) {
1720 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
1721 fid.volatile_fid, pnntsd, acllen, aclflag);
1722 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1723 }
1724
1725 cifs_put_tlink(tlink);
1726 free_xid(xid);
1727 return rc;
1728}
1729#endif /* CIFS_ACL */
1730
2f1afe25
SP		 1731/* Retrieve an ACL from the server */
1732static struct cifs_ntsd *
1733get_smb2_acl(struct cifs_sb_info *cifs_sb,
1734 struct inode *inode, const char *path,
1735 u32 *pacllen)
1736{
1737 struct cifs_ntsd *pntsd = NULL;
1738 struct cifsFileInfo *open_file = NULL;
1739
1740 if (inode)
1741 open_file = find_readable_file(CIFS_I(inode), true);
1742 if (!open_file)
1743 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
1744
1745 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
1746 cifsFileInfo_put(open_file);
1747 return pntsd;
1748}
84908426 1749#endif
2f1afe25 1750
30175628
SF		 1751static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
1752 loff_t offset, loff_t len, bool keep_size)
1753{
1754 struct inode *inode;
1755 struct cifsInodeInfo *cifsi;
1756 struct cifsFileInfo *cfile = file->private_data;
1757 struct file_zero_data_information fsctl_buf;
1758 long rc;
1759 unsigned int xid;
1760
1761 xid = get_xid();
1762
2b0143b5 1763 inode = d_inode(cfile->dentry);
30175628
SF		 1764 cifsi = CIFS_I(inode);
1765
1766 /* if file not oplocked can't be sure whether asking to extend size */
1767 if (!CIFS_CACHE_READ(cifsi))
cfe89091
SF		 1768 if (keep_size == false) {
1769 rc = -EOPNOTSUPP;
1770 free_xid(xid);
1771 return rc;
1772 }
30175628 1773
2bb93d24 1774 /*
30175628
SF		 1775 * Must check if file sparse since fallocate -z (zero range) assumes
1776 * non-sparse allocation
1777 */
cfe89091
SF		 1778 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
1779 rc = -EOPNOTSUPP;
1780 free_xid(xid);
1781 return rc;
1782 }
30175628
SF		 1783
1784 /*
1785 * need to make sure we are not asked to extend the file since the SMB3
1786 * fsctl does not change the file size. In the future we could change
1787 * this to zero the first part of the range then set the file size
1788 * which for a non sparse file would zero the newly extended range
1789 */
1790 if (keep_size == false)
cfe89091
SF		 1791 if (i_size_read(inode) < offset + len) {
1792 rc = -EOPNOTSUPP;
1793 free_xid(xid);
1794 return rc;
1795 }
30175628
SF		 1796
1797 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1798
1799 fsctl_buf.FileOffset = cpu_to_le64(offset);
1800 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1801
1802 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1803 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
63a83b86 1804 true /* is_fctl */, (char *)&fsctl_buf,
30175628
SF		 1805 sizeof(struct file_zero_data_information), NULL, NULL);
1806 free_xid(xid);
1807 return rc;
1808}
1809
31742c5a
SF		 1810static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
1811 loff_t offset, loff_t len)
1812{
1813 struct inode *inode;
1814 struct cifsInodeInfo *cifsi;
1815 struct cifsFileInfo *cfile = file->private_data;
1816 struct file_zero_data_information fsctl_buf;
1817 long rc;
1818 unsigned int xid;
1819 __u8 set_sparse = 1;
1820
1821 xid = get_xid();
1822
2b0143b5 1823 inode = d_inode(cfile->dentry);
31742c5a
SF		 1824 cifsi = CIFS_I(inode);
1825
1826 /* Need to make file sparse, if not already, before freeing range. */
1827 /* Consider adding equivalent for compressed since it could also work */
cfe89091
SF		 1828 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
1829 rc = -EOPNOTSUPP;
1830 free_xid(xid);
1831 return rc;
1832 }
31742c5a
SF		 1833
1834 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1835
1836 fsctl_buf.FileOffset = cpu_to_le64(offset);
1837 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1838
1839 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1840 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
63a83b86 1841 true /* is_fctl */, (char *)&fsctl_buf,
31742c5a
SF		 1842 sizeof(struct file_zero_data_information), NULL, NULL);
1843 free_xid(xid);
1844 return rc;
1845}
1846
9ccf3216
SF		 1847static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
1848 loff_t off, loff_t len, bool keep_size)
1849{
1850 struct inode *inode;
1851 struct cifsInodeInfo *cifsi;
1852 struct cifsFileInfo *cfile = file->private_data;
1853 long rc = -EOPNOTSUPP;
1854 unsigned int xid;
1855
1856 xid = get_xid();
1857
2b0143b5 1858 inode = d_inode(cfile->dentry);
9ccf3216
SF		 1859 cifsi = CIFS_I(inode);
1860
1861 /* if file not oplocked can't be sure whether asking to extend size */
1862 if (!CIFS_CACHE_READ(cifsi))
cfe89091
SF		 1863 if (keep_size == false) {
1864 free_xid(xid);
1865 return rc;
1866 }
9ccf3216
SF		 1867
1868 /*
1869 * Files are non-sparse by default so falloc may be a no-op
1870 * Must check if file sparse. If not sparse, and not extending
1871 * then no need to do anything since file already allocated
1872 */
1873 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
1874 if (keep_size == true)
cfe89091 1875 rc = 0;
9ccf3216
SF		 1876 /* check if extending file */
1877 else if (i_size_read(inode) >= off + len)
1878 /* not extending file and already not sparse */
cfe89091 1879 rc = 0;
9ccf3216
SF		 1880 /* BB: in future add else clause to extend file */
1881 else
cfe89091
SF		 1882 rc = -EOPNOTSUPP;
1883 free_xid(xid);
1884 return rc;
9ccf3216
SF		 1885 }
1886
1887 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
1888 /*
1889 * Check if falloc starts within first few pages of file
1890 * and ends within a few pages of the end of file to
1891 * ensure that most of file is being forced to be
1892 * fallocated now. If so then setting whole file sparse
1893 * ie potentially making a few extra pages at the beginning
1894 * or end of the file non-sparse via set_sparse is harmless.
1895 */
cfe89091
SF		 1896 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
1897 rc = -EOPNOTSUPP;
1898 free_xid(xid);
1899 return rc;
1900 }
9ccf3216
SF		 1901
1902 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
1903 }
1904 /* BB: else ... in future add code to extend file and set sparse */
1905
1906
1907 free_xid(xid);
1908 return rc;
1909}
1910
1911
31742c5a
SF		 1912static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
1913 loff_t off, loff_t len)
1914{
1915 /* KEEP_SIZE already checked for by do_fallocate */
1916 if (mode & FALLOC_FL_PUNCH_HOLE)
1917 return smb3_punch_hole(file, tcon, off, len);
30175628
SF		 1918 else if (mode & FALLOC_FL_ZERO_RANGE) {
1919 if (mode & FALLOC_FL_KEEP_SIZE)
1920 return smb3_zero_range(file, tcon, off, len, true);
1921 return smb3_zero_range(file, tcon, off, len, false);
9ccf3216
SF		 1922 } else if (mode == FALLOC_FL_KEEP_SIZE)
1923 return smb3_simple_falloc(file, tcon, off, len, true);
1924 else if (mode == 0)
1925 return smb3_simple_falloc(file, tcon, off, len, false);
31742c5a
SF		 1926
1927 return -EOPNOTSUPP;
1928}
1929
c11f1df5
SP		 1930static void
1931smb2_downgrade_oplock(struct TCP_Server_Info *server,
1932 struct cifsInodeInfo *cinode, bool set_level2)
1933{
1934 if (set_level2)
1935 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
1936 0, NULL);
1937 else
1938 server->ops->set_oplock_level(cinode, 0, 0, NULL);
1939}
1940
53ef1016 1941static void
42873b0a
PS		 1942smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1943 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 1944{
1945 oplock &= 0xFF;
1946 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1947 return;
1948 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
42873b0a 1949 cinode->oplock = CIFS_CACHE_RHW_FLG;
53ef1016
PS		 1950 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
1951 &cinode->vfs_inode);
1952 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
42873b0a 1953 cinode->oplock = CIFS_CACHE_RW_FLG;
53ef1016
PS		 1954 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
1955 &cinode->vfs_inode);
1956 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
1957 cinode->oplock = CIFS_CACHE_READ_FLG;
1958 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
1959 &cinode->vfs_inode);
1960 } else
1961 cinode->oplock = 0;
1962}
1963
1964static void
42873b0a
PS		 1965smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1966 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 1967{
1968 char message[5] = {0};
1969
1970 oplock &= 0xFF;
1971 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1972 return;
1973
1974 cinode->oplock = 0;
1975 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
1976 cinode->oplock |= CIFS_CACHE_READ_FLG;
1977 strcat(message, "R");
1978 }
1979 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
1980 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
1981 strcat(message, "H");
1982 }
1983 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
1984 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
1985 strcat(message, "W");
1986 }
1987 if (!cinode->oplock)
1988 strcat(message, "None");
1989 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
1990 &cinode->vfs_inode);
1991}
1992
42873b0a
PS		 1993static void
1994smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1995 unsigned int epoch, bool *purge_cache)
1996{
1997 unsigned int old_oplock = cinode->oplock;
1998
1999 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
2000
2001 if (purge_cache) {
2002 *purge_cache = false;
2003 if (old_oplock == CIFS_CACHE_READ_FLG) {
2004 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
2005 (epoch - cinode->epoch > 0))
2006 *purge_cache = true;
2007 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2008 (epoch - cinode->epoch > 1))
2009 *purge_cache = true;
2010 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2011 (epoch - cinode->epoch > 1))
2012 *purge_cache = true;
2013 else if (cinode->oplock == 0 &&
2014 (epoch - cinode->epoch > 0))
2015 *purge_cache = true;
2016 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
2017 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2018 (epoch - cinode->epoch > 0))
2019 *purge_cache = true;
2020 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2021 (epoch - cinode->epoch > 1))
2022 *purge_cache = true;
2023 }
2024 cinode->epoch = epoch;
2025 }
2026}
2027
53ef1016
PS		 2028static bool
2029smb2_is_read_op(__u32 oplock)
2030{
2031 return oplock == SMB2_OPLOCK_LEVEL_II;
2032}
2033
2034static bool
2035smb21_is_read_op(__u32 oplock)
2036{
2037 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
2038 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
2039}
2040
f047390a
PS		 2041static __le32
2042map_oplock_to_lease(u8 oplock)
2043{
2044 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
2045 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
2046 else if (oplock == SMB2_OPLOCK_LEVEL_II)
2047 return SMB2_LEASE_READ_CACHING;
2048 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
2049 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
2050 SMB2_LEASE_WRITE_CACHING;
2051 return 0;
2052}
2053
a41a28bd
PS		 2054static char *
2055smb2_create_lease_buf(u8 *lease_key, u8 oplock)
2056{
2057 struct create_lease *buf;
2058
2059 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
2060 if (!buf)
2061 return NULL;
2062
2063 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
2064 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
f047390a 2065 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
a41a28bd
PS		 2066
2067 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2068 (struct create_lease, lcontext));
2069 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
2070 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2071 (struct create_lease, Name));
2072 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 2073 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
a41a28bd
PS		 2074 buf->Name[0] = 'R';
2075 buf->Name[1] = 'q';
2076 buf->Name[2] = 'L';
2077 buf->Name[3] = 's';
2078 return (char *)buf;
2079}
2080
f047390a
PS		 2081static char *
2082smb3_create_lease_buf(u8 *lease_key, u8 oplock)
2083{
2084 struct create_lease_v2 *buf;
2085
2086 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
2087 if (!buf)
2088 return NULL;
2089
2090 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
2091 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
2092 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2093
2094 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2095 (struct create_lease_v2, lcontext));
2096 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
2097 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2098 (struct create_lease_v2, Name));
2099 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 2100 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
f047390a
PS		 2101 buf->Name[0] = 'R';
2102 buf->Name[1] = 'q';
2103 buf->Name[2] = 'L';
2104 buf->Name[3] = 's';
2105 return (char *)buf;
2106}
2107
b5c7cde3 2108static __u8
96164ab2 2109smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
b5c7cde3
PS		 2110{
2111 struct create_lease *lc = (struct create_lease *)buf;
2112
42873b0a 2113 *epoch = 0; /* not used */
b5c7cde3
PS		 2114 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2115 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2116 return le32_to_cpu(lc->lcontext.LeaseState);
2117}
2118
f047390a 2119static __u8
96164ab2 2120smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
f047390a
PS		 2121{
2122 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
2123
42873b0a 2124 *epoch = le16_to_cpu(lc->lcontext.Epoch);
f047390a
PS		 2125 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2126 return SMB2_OPLOCK_LEVEL_NOCHANGE;
96164ab2
RS		 2127 if (lease_key)
2128 memcpy(lease_key, &lc->lcontext.LeaseKeyLow,
2129 SMB2_LEASE_KEY_SIZE);
f047390a
PS		 2130 return le32_to_cpu(lc->lcontext.LeaseState);
2131}
2132
7f6c5008
PS		 2133static unsigned int
2134smb2_wp_retry_size(struct inode *inode)
2135{
2136 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
2137 SMB2_MAX_BUFFER_SIZE);
2138}
2139
52755808
PS		 2140static bool
2141smb2_dir_needs_close(struct cifsFileInfo *cfile)
2142{
2143 return !cfile->invalidHandle;
2144}
2145
026e93dc 2146static void
977b6170
RS		 2147fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
2148 struct smb_rqst *old_rq)
026e93dc
PS		 2149{
2150 struct smb2_sync_hdr *shdr =
2151 (struct smb2_sync_hdr *)old_rq->rq_iov[1].iov_base;
026e93dc
PS		 2152
2153 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
2154 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
2155 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
2156 tr_hdr->Flags = cpu_to_le16(0x01);
2157 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2158 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
026e93dc
PS		 2159}
2160
262916bc
RS		 2161/* We can not use the normal sg_set_buf() as we will sometimes pass a
2162 * stack object as buf.
2163 */
2164static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
2165 unsigned int buflen)
2166{
2167 sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
2168}
2169
977b6170
RS		 2170/* Assumes:
2171 * rqst->rq_iov[0] is rfc1002 length
2172 * rqst->rq_iov[1] is tranform header
2173 * rqst->rq_iov[2+] data to be encrypted/decrypted
2174 */
026e93dc
PS		 2175static struct scatterlist *
2176init_sg(struct smb_rqst *rqst, u8 *sign)
2177{
977b6170
RS		 2178 unsigned int sg_len = rqst->rq_nvec + rqst->rq_npages;
2179 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
026e93dc
PS		 2180 struct scatterlist *sg;
2181 unsigned int i;
2182 unsigned int j;
2183
2184 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
2185 if (!sg)
2186 return NULL;
2187
2188 sg_init_table(sg, sg_len);
977b6170
RS		 2189 smb2_sg_set_buf(&sg[0], rqst->rq_iov[1].iov_base + 20, assoc_data_len);
2190 for (i = 1; i < rqst->rq_nvec - 1; i++)
2191 smb2_sg_set_buf(&sg[i], rqst->rq_iov[i+1].iov_base,
2192 rqst->rq_iov[i+1].iov_len);
026e93dc
PS		 2193 for (j = 0; i < sg_len - 1; i++, j++) {
2194 unsigned int len = (j < rqst->rq_npages - 1) ? rqst->rq_pagesz
2195 : rqst->rq_tailsz;
2196 sg_set_page(&sg[i], rqst->rq_pages[j], len, 0);
2197 }
262916bc 2198 smb2_sg_set_buf(&sg[sg_len - 1], sign, SMB2_SIGNATURE_SIZE);
026e93dc
PS		 2199 return sg;
2200}
2201
61cfac6f
PS		 2202static int
2203smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
2204{
2205 struct cifs_ses *ses;
2206 u8 *ses_enc_key;
2207
2208 spin_lock(&cifs_tcp_ses_lock);
2209 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
2210 if (ses->Suid != ses_id)
2211 continue;
2212 ses_enc_key = enc ? ses->smb3encryptionkey :
2213 ses->smb3decryptionkey;
2214 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
2215 spin_unlock(&cifs_tcp_ses_lock);
2216 return 0;
2217 }
2218 spin_unlock(&cifs_tcp_ses_lock);
2219
2220 return 1;
2221}
026e93dc
PS		 2222/*
2223 * Encrypt or decrypt @rqst message. @rqst has the following format:
977b6170
RS		 2224 * iov[0] - rfc1002 length
2225 * iov[1] - transform header (associate data),
2226 * iov[2-N] and pages - data to encrypt.
2227 * On success return encrypted data in iov[2-N] and pages, leave iov[0-1]
026e93dc
PS		 2228 * untouched.
2229 */
2230static int
2231crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc)
2232{
2233 struct smb2_transform_hdr *tr_hdr =
2234 (struct smb2_transform_hdr *)rqst->rq_iov[0].iov_base;
93012bf9 2235 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20 - server->vals->header_preamble_size;
026e93dc
PS		 2236 int rc = 0;
2237 struct scatterlist *sg;
2238 u8 sign[SMB2_SIGNATURE_SIZE] = {};
61cfac6f 2239 u8 key[SMB3_SIGN_KEY_SIZE];
026e93dc
PS		 2240 struct aead_request *req;
2241 char *iv;
2242 unsigned int iv_len;
a5186b85 2243 DECLARE_CRYPTO_WAIT(wait);
026e93dc
PS		 2244 struct crypto_aead *tfm;
2245 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2246
61cfac6f
PS		 2247 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
2248 if (rc) {
2249 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
2250 enc ? "en" : "de");
026e93dc
PS		 2251 return 0;
2252 }
2253
2254 rc = smb3_crypto_aead_allocate(server);
2255 if (rc) {
2256 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
2257 return rc;
2258 }
2259
2260 tfm = enc ? server->secmech.ccmaesencrypt :
2261 server->secmech.ccmaesdecrypt;
61cfac6f 2262 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
026e93dc
PS		 2263 if (rc) {
2264 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
2265 return rc;
2266 }
2267
2268 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
2269 if (rc) {
2270 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
2271 return rc;
2272 }
2273
2274 req = aead_request_alloc(tfm, GFP_KERNEL);
2275 if (!req) {
2276 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
2277 return -ENOMEM;
2278 }
2279
2280 if (!enc) {
2281 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
2282 crypt_len += SMB2_SIGNATURE_SIZE;
2283 }
2284
2285 sg = init_sg(rqst, sign);
2286 if (!sg) {
517a6e43
CJ		 2287 cifs_dbg(VFS, "%s: Failed to init sg", __func__);
2288 rc = -ENOMEM;
026e93dc
PS		 2289 goto free_req;
2290 }
2291
2292 iv_len = crypto_aead_ivsize(tfm);
2293 iv = kzalloc(iv_len, GFP_KERNEL);
2294 if (!iv) {
2295 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
517a6e43 2296 rc = -ENOMEM;
026e93dc
PS		 2297 goto free_sg;
2298 }
2299 iv[0] = 3;
2300 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2301
2302 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
2303 aead_request_set_ad(req, assoc_data_len);
2304
2305 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
a5186b85 2306 crypto_req_done, &wait);
026e93dc 2307
a5186b85
GBY		 2308 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
2309 : crypto_aead_decrypt(req), &wait);
026e93dc
PS		 2310
2311 if (!rc && enc)
2312 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
2313
2314 kfree(iv);
2315free_sg:
2316 kfree(sg);
2317free_req:
2318 kfree(req);
2319 return rc;
2320}
2321
977b6170
RS		 2322/*
2323 * This is called from smb_send_rqst. At this point we have the rfc1002
2324 * header as the first element in the vector.
2325 */
026e93dc
PS		 2326static int
2327smb3_init_transform_rq(struct TCP_Server_Info *server, struct smb_rqst *new_rq,
2328 struct smb_rqst *old_rq)
2329{
2330 struct kvec *iov;
2331 struct page **pages;
2332 struct smb2_transform_hdr *tr_hdr;
2333 unsigned int npages = old_rq->rq_npages;
977b6170 2334 unsigned int orig_len = get_rfc1002_length(old_rq->rq_iov[0].iov_base);
026e93dc
PS		 2335 int i;
2336 int rc = -ENOMEM;
2337
2338 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
2339 if (!pages)
2340 return rc;
2341
2342 new_rq->rq_pages = pages;
2343 new_rq->rq_npages = old_rq->rq_npages;
2344 new_rq->rq_pagesz = old_rq->rq_pagesz;
2345 new_rq->rq_tailsz = old_rq->rq_tailsz;
2346
2347 for (i = 0; i < npages; i++) {
2348 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2349 if (!pages[i])
2350 goto err_free_pages;
2351 }
2352
977b6170
RS		 2353 /* Make space for one extra iov to hold the transform header */
2354 iov = kmalloc_array(old_rq->rq_nvec + 1, sizeof(struct kvec),
2355 GFP_KERNEL);
026e93dc
PS		 2356 if (!iov)
2357 goto err_free_pages;
2358
2359 /* copy all iovs from the old except the 1st one (rfc1002 length) */
977b6170 2360 memcpy(&iov[2], &old_rq->rq_iov[1],
026e93dc 2361 sizeof(struct kvec) * (old_rq->rq_nvec - 1));
977b6170
RS		 2362 /* copy the rfc1002 iov */
2363 iov[0].iov_base = old_rq->rq_iov[0].iov_base;
2364 iov[0].iov_len = old_rq->rq_iov[0].iov_len;
2365
026e93dc 2366 new_rq->rq_iov = iov;
977b6170 2367 new_rq->rq_nvec = old_rq->rq_nvec + 1;
026e93dc
PS		 2368
2369 tr_hdr = kmalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL);
2370 if (!tr_hdr)
2371 goto err_free_iov;
2372
977b6170
RS		 2373 /* fill the 2nd iov with a transform header */
2374 fill_transform_hdr(tr_hdr, orig_len, old_rq);
2375 new_rq->rq_iov[1].iov_base = tr_hdr;
2376 new_rq->rq_iov[1].iov_len = sizeof(struct smb2_transform_hdr);
2377
2378 /* Update rfc1002 header */
2379 inc_rfc1001_len(new_rq->rq_iov[0].iov_base,
2380 sizeof(struct smb2_transform_hdr));
026e93dc
PS		 2381
2382 /* copy pages form the old */
2383 for (i = 0; i < npages; i++) {
2384 char *dst = kmap(new_rq->rq_pages[i]);
2385 char *src = kmap(old_rq->rq_pages[i]);
2386 unsigned int len = (i < npages - 1) ? new_rq->rq_pagesz :
2387 new_rq->rq_tailsz;
2388 memcpy(dst, src, len);
2389 kunmap(new_rq->rq_pages[i]);
2390 kunmap(old_rq->rq_pages[i]);
2391 }
2392
2393 rc = crypt_message(server, new_rq, 1);
2394 cifs_dbg(FYI, "encrypt message returned %d", rc);
2395 if (rc)
2396 goto err_free_tr_hdr;
2397
2398 return rc;
2399
2400err_free_tr_hdr:
2401 kfree(tr_hdr);
2402err_free_iov:
2403 kfree(iov);
2404err_free_pages:
2405 for (i = i - 1; i >= 0; i--)
2406 put_page(pages[i]);
2407 kfree(pages);
2408 return rc;
2409}
2410
2411static void
2412smb3_free_transform_rq(struct smb_rqst *rqst)
2413{
2414 int i = rqst->rq_npages - 1;
2415
2416 for (; i >= 0; i--)
2417 put_page(rqst->rq_pages[i]);
2418 kfree(rqst->rq_pages);
2419 /* free transform header */
977b6170 2420 kfree(rqst->rq_iov[1].iov_base);
026e93dc
PS		 2421 kfree(rqst->rq_iov);
2422}
2423
4326ed2f
PS		 2424static int
2425smb3_is_transform_hdr(void *buf)
2426{
2427 struct smb2_transform_hdr *trhdr = buf;
2428
2429 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
2430}
2431
2432static int
2433decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
2434 unsigned int buf_data_size, struct page **pages,
2435 unsigned int npages, unsigned int page_data_size)
2436{
977b6170 2437 struct kvec iov[3];
4326ed2f 2438 struct smb_rqst rqst = {NULL};
4326ed2f
PS		 2439 int rc;
2440
977b6170
RS		 2441 iov[0].iov_base = NULL;
2442 iov[0].iov_len = 0;
2443 iov[1].iov_base = buf;
2444 iov[1].iov_len = sizeof(struct smb2_transform_hdr);
2445 iov[2].iov_base = buf + sizeof(struct smb2_transform_hdr);
2446 iov[2].iov_len = buf_data_size;
4326ed2f
PS		 2447
2448 rqst.rq_iov = iov;
977b6170 2449 rqst.rq_nvec = 3;
4326ed2f
PS		 2450 rqst.rq_pages = pages;
2451 rqst.rq_npages = npages;
2452 rqst.rq_pagesz = PAGE_SIZE;
2453 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
2454
2455 rc = crypt_message(server, &rqst, 0);
2456 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
2457
2458 if (rc)
2459 return rc;
2460
977b6170
RS		 2461 memmove(buf + server->vals->header_preamble_size, iov[2].iov_base, buf_data_size);
2462
2463 server->total_read = buf_data_size + page_data_size;
4326ed2f
PS		 2464
2465 return rc;
2466}
2467
c42a6abe
PS		 2468static int
2469read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
2470 unsigned int npages, unsigned int len)
2471{
2472 int i;
2473 int length;
2474
2475 for (i = 0; i < npages; i++) {
2476 struct page *page = pages[i];
2477 size_t n;
2478
2479 n = len;
2480 if (len >= PAGE_SIZE) {
2481 /* enough data to fill the page */
2482 n = PAGE_SIZE;
2483 len -= n;
2484 } else {
2485 zero_user(page, len, PAGE_SIZE - len);
2486 len = 0;
2487 }
2488 length = cifs_read_page_from_socket(server, page, n);
2489 if (length < 0)
2490 return length;
2491 server->total_read += length;
2492 }
2493
2494 return 0;
2495}
2496
2497static int
2498init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
2499 unsigned int cur_off, struct bio_vec **page_vec)
2500{
2501 struct bio_vec *bvec;
2502 int i;
2503
2504 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
2505 if (!bvec)
2506 return -ENOMEM;
2507
2508 for (i = 0; i < npages; i++) {
2509 bvec[i].bv_page = pages[i];
2510 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
2511 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
2512 data_size -= bvec[i].bv_len;
2513 }
2514
2515 if (data_size != 0) {
2516 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
2517 kfree(bvec);
2518 return -EIO;
2519 }
2520
2521 *page_vec = bvec;
2522 return 0;
2523}
2524
4326ed2f
PS		 2525static int
2526handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
2527 char *buf, unsigned int buf_len, struct page **pages,
2528 unsigned int npages, unsigned int page_data_size)
2529{
2530 unsigned int data_offset;
2531 unsigned int data_len;
c42a6abe
PS		 2532 unsigned int cur_off;
2533 unsigned int cur_page_idx;
2534 unsigned int pad_len;
4326ed2f
PS		 2535 struct cifs_readdata *rdata = mid->callback_data;
2536 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
2537 struct bio_vec *bvec = NULL;
2538 struct iov_iter iter;
2539 struct kvec iov;
2540 int length;
74dcf418 2541 bool use_rdma_mr = false;
4326ed2f
PS		 2542
2543 if (shdr->Command != SMB2_READ) {
2544 cifs_dbg(VFS, "only big read responses are supported\n");
2545 return -ENOTSUPP;
2546 }
2547
511c54a2
PS		 2548 if (server->ops->is_session_expired &&
2549 server->ops->is_session_expired(buf)) {
2550 cifs_reconnect(server);
2551 wake_up(&server->response_q);
2552 return -1;
2553 }
2554
4326ed2f
PS		 2555 if (server->ops->is_status_pending &&
2556 server->ops->is_status_pending(buf, server, 0))
2557 return -1;
2558
2559 rdata->result = server->ops->map_error(buf, false);
2560 if (rdata->result != 0) {
2561 cifs_dbg(FYI, "%s: server returned error %d\n",
2562 __func__, rdata->result);
2563 dequeue_mid(mid, rdata->result);
2564 return 0;
2565 }
2566
93012bf9 2567 data_offset = server->ops->read_data_offset(buf) + server->vals->header_preamble_size;
74dcf418
LL		 2568#ifdef CONFIG_CIFS_SMB_DIRECT
2569 use_rdma_mr = rdata->mr;
2570#endif
2571 data_len = server->ops->read_data_length(buf, use_rdma_mr);
4326ed2f
PS		 2572
2573 if (data_offset < server->vals->read_rsp_size) {
2574 /*
2575 * win2k8 sometimes sends an offset of 0 when the read
2576 * is beyond the EOF. Treat it as if the data starts just after
2577 * the header.
2578 */
2579 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
2580 __func__, data_offset);
2581 data_offset = server->vals->read_rsp_size;
2582 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
2583 /* data_offset is beyond the end of smallbuf */
2584 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
2585 __func__, data_offset);
2586 rdata->result = -EIO;
2587 dequeue_mid(mid, rdata->result);
2588 return 0;
2589 }
2590
c42a6abe
PS		 2591 pad_len = data_offset - server->vals->read_rsp_size;
2592
4326ed2f
PS		 2593 if (buf_len <= data_offset) {
2594 /* read response payload is in pages */
c42a6abe
PS		 2595 cur_page_idx = pad_len / PAGE_SIZE;
2596 cur_off = pad_len % PAGE_SIZE;
2597
2598 if (cur_page_idx != 0) {
2599 /* data offset is beyond the 1st page of response */
2600 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
2601 __func__, data_offset);
2602 rdata->result = -EIO;
2603 dequeue_mid(mid, rdata->result);
2604 return 0;
2605 }
2606
2607 if (data_len > page_data_size - pad_len) {
2608 /* data_len is corrupt -- discard frame */
2609 rdata->result = -EIO;
2610 dequeue_mid(mid, rdata->result);
2611 return 0;
2612 }
2613
2614 rdata->result = init_read_bvec(pages, npages, page_data_size,
2615 cur_off, &bvec);
2616 if (rdata->result != 0) {
2617 dequeue_mid(mid, rdata->result);
2618 return 0;
2619 }
2620
2621 iov_iter_bvec(&iter, WRITE | ITER_BVEC, bvec, npages, data_len);
4326ed2f
PS		 2622 } else if (buf_len >= data_offset + data_len) {
2623 /* read response payload is in buf */
2624 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
2625 iov.iov_base = buf + data_offset;
2626 iov.iov_len = data_len;
2627 iov_iter_kvec(&iter, WRITE | ITER_KVEC, &iov, 1, data_len);
2628 } else {
2629 /* read response payload cannot be in both buf and pages */
2630 WARN_ONCE(1, "buf can not contain only a part of read data");
2631 rdata->result = -EIO;
2632 dequeue_mid(mid, rdata->result);
2633 return 0;
2634 }
2635
2636 /* set up first iov for signature check */
2637 rdata->iov[0].iov_base = buf;
2638 rdata->iov[0].iov_len = 4;
2639 rdata->iov[1].iov_base = buf + 4;
2640 rdata->iov[1].iov_len = server->vals->read_rsp_size - 4;
2641 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
2642 rdata->iov[0].iov_base, server->vals->read_rsp_size);
2643
2644 length = rdata->copy_into_pages(server, rdata, &iter);
2645
2646 kfree(bvec);
2647
2648 if (length < 0)
2649 return length;
2650
2651 dequeue_mid(mid, false);
2652 return length;
2653}
2654
c42a6abe
PS		 2655static int
2656receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2657{
2658 char *buf = server->smallbuf;
2659 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2660 unsigned int npages;
2661 struct page **pages;
2662 unsigned int len;
2e96467d 2663 unsigned int buflen = server->pdu_size + server->vals->header_preamble_size;
c42a6abe
PS		 2664 int rc;
2665 int i = 0;
2666
93012bf9
RS		 2667 len = min_t(unsigned int, buflen, server->vals->read_rsp_size -
2668 server->vals->header_preamble_size +
c42a6abe
PS		 2669 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
2670
2671 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
2672 if (rc < 0)
2673 return rc;
2674 server->total_read += rc;
2675
93012bf9
RS		 2676 len = le32_to_cpu(tr_hdr->OriginalMessageSize) +
2677 server->vals->header_preamble_size -
2678 server->vals->read_rsp_size;
c42a6abe
PS		 2679 npages = DIV_ROUND_UP(len, PAGE_SIZE);
2680
2681 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
2682 if (!pages) {
2683 rc = -ENOMEM;
2684 goto discard_data;
2685 }
2686
2687 for (; i < npages; i++) {
2688 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2689 if (!pages[i]) {
2690 rc = -ENOMEM;
2691 goto discard_data;
2692 }
2693 }
2694
2695 /* read read data into pages */
2696 rc = read_data_into_pages(server, pages, npages, len);
2697 if (rc)
2698 goto free_pages;
2699
350be257 2700 rc = cifs_discard_remaining_data(server);
c42a6abe
PS		 2701 if (rc)
2702 goto free_pages;
2703
93012bf9
RS		 2704 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size -
2705 server->vals->header_preamble_size,
c42a6abe
PS		 2706 pages, npages, len);
2707 if (rc)
2708 goto free_pages;
2709
2710 *mid = smb2_find_mid(server, buf);
2711 if (*mid == NULL)
2712 cifs_dbg(FYI, "mid not found\n");
2713 else {
2714 cifs_dbg(FYI, "mid found\n");
2715 (*mid)->decrypted = true;
2716 rc = handle_read_data(server, *mid, buf,
2717 server->vals->read_rsp_size,
2718 pages, npages, len);
2719 }
2720
2721free_pages:
2722 for (i = i - 1; i >= 0; i--)
2723 put_page(pages[i]);
2724 kfree(pages);
2725 return rc;
2726discard_data:
350be257 2727 cifs_discard_remaining_data(server);
c42a6abe
PS		 2728 goto free_pages;
2729}
2730
4326ed2f
PS		 2731static int
2732receive_encrypted_standard(struct TCP_Server_Info *server,
2733 struct mid_q_entry **mid)
2734{
2735 int length;
2736 char *buf = server->smallbuf;
2e96467d 2737 unsigned int pdu_length = server->pdu_size;
4326ed2f
PS		 2738 unsigned int buf_size;
2739 struct mid_q_entry *mid_entry;
2740
2741 /* switch to large buffer if too big for a small one */
93012bf9 2742 if (pdu_length + server->vals->header_preamble_size > MAX_CIFS_SMALL_BUFFER_SIZE) {
4326ed2f
PS		 2743 server->large_buf = true;
2744 memcpy(server->bigbuf, buf, server->total_read);
2745 buf = server->bigbuf;
2746 }
2747
2748 /* now read the rest */
2749 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
93012bf9
RS		 2750 pdu_length - HEADER_SIZE(server) + 1 +
2751 server->vals->header_preamble_size);
4326ed2f
PS		 2752 if (length < 0)
2753 return length;
2754 server->total_read += length;
2755
93012bf9 2756 buf_size = pdu_length + server->vals->header_preamble_size - sizeof(struct smb2_transform_hdr);
4326ed2f
PS		 2757 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
2758 if (length)
2759 return length;
2760
2761 mid_entry = smb2_find_mid(server, buf);
2762 if (mid_entry == NULL)
2763 cifs_dbg(FYI, "mid not found\n");
2764 else {
2765 cifs_dbg(FYI, "mid found\n");
2766 mid_entry->decrypted = true;
2767 }
2768
2769 *mid = mid_entry;
2770
2771 if (mid_entry && mid_entry->handle)
2772 return mid_entry->handle(server, mid_entry);
2773
2774 return cifs_handle_standard(server, mid_entry);
2775}
2776
2777static int
2778smb3_receive_transform(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2779{
2780 char *buf = server->smallbuf;
2e96467d 2781 unsigned int pdu_length = server->pdu_size;
4326ed2f
PS		 2782 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2783 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2784
93012bf9 2785 if (pdu_length + server->vals->header_preamble_size < sizeof(struct smb2_transform_hdr) +
4326ed2f
PS		 2786 sizeof(struct smb2_sync_hdr)) {
2787 cifs_dbg(VFS, "Transform message is too small (%u)\n",
2788 pdu_length);
2789 cifs_reconnect(server);
2790 wake_up(&server->response_q);
2791 return -ECONNABORTED;
2792 }
2793
93012bf9 2794 if (pdu_length + server->vals->header_preamble_size < orig_len + sizeof(struct smb2_transform_hdr)) {
4326ed2f
PS		 2795 cifs_dbg(VFS, "Transform message is broken\n");
2796 cifs_reconnect(server);
2797 wake_up(&server->response_q);
2798 return -ECONNABORTED;
2799 }
2800
93012bf9 2801 if (pdu_length + server->vals->header_preamble_size > CIFSMaxBufSize + MAX_HEADER_SIZE(server))
c42a6abe 2802 return receive_encrypted_read(server, mid);
4326ed2f
PS		 2803
2804 return receive_encrypted_standard(server, mid);
2805}
2806
2807int
2808smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
2809{
2810 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
2811
2e96467d 2812 return handle_read_data(server, mid, buf, server->pdu_size +
93012bf9 2813 server->vals->header_preamble_size,
4326ed2f
PS		 2814 NULL, 0, 0);
2815}
2816
53ef1016 2817struct smb_version_operations smb20_operations = {
027e8eec 2818 .compare_fids = smb2_compare_fids,
2dc7e1c0 2819 .setup_request = smb2_setup_request,
c95b8eed 2820 .setup_async_request = smb2_setup_async_request,
2dc7e1c0 2821 .check_receive = smb2_check_receive,
28ea5290
PS		 2822 .add_credits = smb2_add_credits,
2823 .set_credits = smb2_set_credits,
2824 .get_credits_field = smb2_get_credits_field,
2825 .get_credits = smb2_get_credits,
cb7e9eab 2826 .wait_mtu_credits = cifs_wait_mtu_credits,
2dc7e1c0 2827 .get_next_mid = smb2_get_next_mid,
09a4707e
PS		 2828 .read_data_offset = smb2_read_data_offset,
2829 .read_data_length = smb2_read_data_length,
2830 .map_error = map_smb2_to_linux_error,
093b2bda
PS		 2831 .find_mid = smb2_find_mid,
2832 .check_message = smb2_check_message,
2833 .dump_detail = smb2_dump_detail,
d60622eb
PS		 2834 .clear_stats = smb2_clear_stats,
2835 .print_stats = smb2_print_stats,
983c88a4 2836 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 2837 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 2838 .downgrade_oplock = smb2_downgrade_oplock,
ec2e4523
PS		 2839 .need_neg = smb2_need_neg,
2840 .negotiate = smb2_negotiate,
3a3bab50
PS		 2841 .negotiate_wsize = smb2_negotiate_wsize,
2842 .negotiate_rsize = smb2_negotiate_rsize,
5478f9ba
PS		 2843 .sess_setup = SMB2_sess_setup,
2844 .logoff = SMB2_logoff,
faaf946a
PS		 2845 .tree_connect = SMB2_tcon,
2846 .tree_disconnect = SMB2_tdis,
34f62640 2847 .qfs_tcon = smb2_qfs_tcon,
2503a0db 2848 .is_path_accessible = smb2_is_path_accessible,
9094fad1
PS		 2849 .can_echo = smb2_can_echo,
2850 .echo = SMB2_echo,
be4cb9e3
PS		 2851 .query_path_info = smb2_query_path_info,
2852 .get_srv_inum = smb2_get_srv_inum,
b7546bc5 2853 .query_file_info = smb2_query_file_info,
c839ff24
PS		 2854 .set_path_size = smb2_set_path_size,
2855 .set_file_size = smb2_set_file_size,
1feeaac7 2856 .set_file_info = smb2_set_file_info,
64a5cfa6 2857 .set_compression = smb2_set_compression,
a0e73183
PS		 2858 .mkdir = smb2_mkdir,
2859 .mkdir_setinfo = smb2_mkdir_setinfo,
1a500f01 2860 .rmdir = smb2_rmdir,
cbe6f439 2861 .unlink = smb2_unlink,
35143eb5 2862 .rename = smb2_rename_path,
568798cc 2863 .create_hardlink = smb2_create_hardlink,
b42bf888 2864 .query_symlink = smb2_query_symlink,
5b23c97d
SP		 2865 .query_mf_symlink = smb3_query_mf_symlink,
2866 .create_mf_symlink = smb3_create_mf_symlink,
f0df737e
PS		 2867 .open = smb2_open_file,
2868 .set_fid = smb2_set_fid,
2869 .close = smb2_close_file,
7a5cfb19 2870 .flush = smb2_flush_file,
09a4707e 2871 .async_readv = smb2_async_readv,
33319141 2872 .async_writev = smb2_async_writev,
d8e05039 2873 .sync_read = smb2_sync_read,
009d3443 2874 .sync_write = smb2_sync_write,
d324f08d
PS		 2875 .query_dir_first = smb2_query_dir_first,
2876 .query_dir_next = smb2_query_dir_next,
2877 .close_dir = smb2_close_dir,
2878 .calc_smb_size = smb2_calc_size,
2e44b288 2879 .is_status_pending = smb2_is_status_pending,
511c54a2 2880 .is_session_expired = smb2_is_session_expired,
983c88a4 2881 .oplock_response = smb2_oplock_response,
6fc05c25 2882 .queryfs = smb2_queryfs,
f7ba7fe6
PS		 2883 .mand_lock = smb2_mand_lock,
2884 .mand_unlock_range = smb2_unlock_range,
b140799a 2885 .push_mand_locks = smb2_push_mandatory_locks,
b8c32dbb
PS		 2886 .get_lease_key = smb2_get_lease_key,
2887 .set_lease_key = smb2_set_lease_key,
2888 .new_lease_key = smb2_new_lease_key,
38107d45 2889 .calc_signature = smb2_calc_signature,
53ef1016
PS		 2890 .is_read_op = smb2_is_read_op,
2891 .set_oplock_level = smb2_set_oplock_level,
a41a28bd 2892 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 2893 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 2894 .copychunk_range = smb2_copychunk_range,
7f6c5008 2895 .wp_retry_size = smb2_wp_retry_size,
52755808 2896 .dir_needs_close = smb2_dir_needs_close,
9d49640a 2897 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2898 .select_sectype = smb2_select_sectype,
95907fea
RS		 2899#ifdef CONFIG_CIFS_XATTR
2900 .query_all_EAs = smb2_query_eas,
5517554e 2901 .set_EA = smb2_set_ea,
95907fea 2902#endif /* CIFS_XATTR */
2f1afe25
SP		 2903#ifdef CONFIG_CIFS_ACL
2904 .get_acl = get_smb2_acl,
2905 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 2906 .set_acl = set_smb2_acl,
2f1afe25 2907#endif /* CIFS_ACL */
38107d45
SF		 2908};
2909
53ef1016
PS		 2910struct smb_version_operations smb21_operations = {
2911 .compare_fids = smb2_compare_fids,
2912 .setup_request = smb2_setup_request,
2913 .setup_async_request = smb2_setup_async_request,
2914 .check_receive = smb2_check_receive,
2915 .add_credits = smb2_add_credits,
2916 .set_credits = smb2_set_credits,
2917 .get_credits_field = smb2_get_credits_field,
2918 .get_credits = smb2_get_credits,
cb7e9eab 2919 .wait_mtu_credits = smb2_wait_mtu_credits,
53ef1016
PS		 2920 .get_next_mid = smb2_get_next_mid,
2921 .read_data_offset = smb2_read_data_offset,
2922 .read_data_length = smb2_read_data_length,
2923 .map_error = map_smb2_to_linux_error,
2924 .find_mid = smb2_find_mid,
2925 .check_message = smb2_check_message,
2926 .dump_detail = smb2_dump_detail,
2927 .clear_stats = smb2_clear_stats,
2928 .print_stats = smb2_print_stats,
2929 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 2930 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 2931 .downgrade_oplock = smb2_downgrade_oplock,
53ef1016
PS		 2932 .need_neg = smb2_need_neg,
2933 .negotiate = smb2_negotiate,
2934 .negotiate_wsize = smb2_negotiate_wsize,
2935 .negotiate_rsize = smb2_negotiate_rsize,
2936 .sess_setup = SMB2_sess_setup,
2937 .logoff = SMB2_logoff,
2938 .tree_connect = SMB2_tcon,
2939 .tree_disconnect = SMB2_tdis,
34f62640 2940 .qfs_tcon = smb2_qfs_tcon,
53ef1016
PS		 2941 .is_path_accessible = smb2_is_path_accessible,
2942 .can_echo = smb2_can_echo,
2943 .echo = SMB2_echo,
2944 .query_path_info = smb2_query_path_info,
2945 .get_srv_inum = smb2_get_srv_inum,
2946 .query_file_info = smb2_query_file_info,
2947 .set_path_size = smb2_set_path_size,
2948 .set_file_size = smb2_set_file_size,
2949 .set_file_info = smb2_set_file_info,
64a5cfa6 2950 .set_compression = smb2_set_compression,
53ef1016
PS		 2951 .mkdir = smb2_mkdir,
2952 .mkdir_setinfo = smb2_mkdir_setinfo,
2953 .rmdir = smb2_rmdir,
2954 .unlink = smb2_unlink,
2955 .rename = smb2_rename_path,
2956 .create_hardlink = smb2_create_hardlink,
2957 .query_symlink = smb2_query_symlink,
c22870ea 2958 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 2959 .create_mf_symlink = smb3_create_mf_symlink,
53ef1016
PS		 2960 .open = smb2_open_file,
2961 .set_fid = smb2_set_fid,
2962 .close = smb2_close_file,
2963 .flush = smb2_flush_file,
2964 .async_readv = smb2_async_readv,
2965 .async_writev = smb2_async_writev,
2966 .sync_read = smb2_sync_read,
2967 .sync_write = smb2_sync_write,
2968 .query_dir_first = smb2_query_dir_first,
2969 .query_dir_next = smb2_query_dir_next,
2970 .close_dir = smb2_close_dir,
2971 .calc_smb_size = smb2_calc_size,
2972 .is_status_pending = smb2_is_status_pending,
511c54a2 2973 .is_session_expired = smb2_is_session_expired,
53ef1016
PS		 2974 .oplock_response = smb2_oplock_response,
2975 .queryfs = smb2_queryfs,
2976 .mand_lock = smb2_mand_lock,
2977 .mand_unlock_range = smb2_unlock_range,
2978 .push_mand_locks = smb2_push_mandatory_locks,
2979 .get_lease_key = smb2_get_lease_key,
2980 .set_lease_key = smb2_set_lease_key,
2981 .new_lease_key = smb2_new_lease_key,
2982 .calc_signature = smb2_calc_signature,
2983 .is_read_op = smb21_is_read_op,
2984 .set_oplock_level = smb21_set_oplock_level,
a41a28bd 2985 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 2986 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 2987 .copychunk_range = smb2_copychunk_range,
7f6c5008 2988 .wp_retry_size = smb2_wp_retry_size,
52755808 2989 .dir_needs_close = smb2_dir_needs_close,
834170c8 2990 .enum_snapshots = smb3_enum_snapshots,
9d49640a 2991 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2992 .select_sectype = smb2_select_sectype,
95907fea
RS		 2993#ifdef CONFIG_CIFS_XATTR
2994 .query_all_EAs = smb2_query_eas,
5517554e 2995 .set_EA = smb2_set_ea,
95907fea 2996#endif /* CIFS_XATTR */
2f1afe25
SP		 2997#ifdef CONFIG_CIFS_ACL
2998 .get_acl = get_smb2_acl,
2999 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 3000 .set_acl = set_smb2_acl,
2f1afe25 3001#endif /* CIFS_ACL */
53ef1016 3002};
38107d45
SF		 3003
3004struct smb_version_operations smb30_operations = {
3005 .compare_fids = smb2_compare_fids,
3006 .setup_request = smb2_setup_request,
3007 .setup_async_request = smb2_setup_async_request,
3008 .check_receive = smb2_check_receive,
3009 .add_credits = smb2_add_credits,
3010 .set_credits = smb2_set_credits,
3011 .get_credits_field = smb2_get_credits_field,
3012 .get_credits = smb2_get_credits,
cb7e9eab 3013 .wait_mtu_credits = smb2_wait_mtu_credits,
38107d45
SF		 3014 .get_next_mid = smb2_get_next_mid,
3015 .read_data_offset = smb2_read_data_offset,
3016 .read_data_length = smb2_read_data_length,
3017 .map_error = map_smb2_to_linux_error,
3018 .find_mid = smb2_find_mid,
3019 .check_message = smb2_check_message,
3020 .dump_detail = smb2_dump_detail,
3021 .clear_stats = smb2_clear_stats,
3022 .print_stats = smb2_print_stats,
769ee6a4 3023 .dump_share_caps = smb2_dump_share_caps,
38107d45 3024 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3025 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 3026 .downgrade_oplock = smb2_downgrade_oplock,
38107d45
SF		 3027 .need_neg = smb2_need_neg,
3028 .negotiate = smb2_negotiate,
3029 .negotiate_wsize = smb2_negotiate_wsize,
3030 .negotiate_rsize = smb2_negotiate_rsize,
3031 .sess_setup = SMB2_sess_setup,
3032 .logoff = SMB2_logoff,
3033 .tree_connect = SMB2_tcon,
3034 .tree_disconnect = SMB2_tdis,
af6a12ea 3035 .qfs_tcon = smb3_qfs_tcon,
38107d45
SF		 3036 .is_path_accessible = smb2_is_path_accessible,
3037 .can_echo = smb2_can_echo,
3038 .echo = SMB2_echo,
3039 .query_path_info = smb2_query_path_info,
3040 .get_srv_inum = smb2_get_srv_inum,
3041 .query_file_info = smb2_query_file_info,
3042 .set_path_size = smb2_set_path_size,
3043 .set_file_size = smb2_set_file_size,
3044 .set_file_info = smb2_set_file_info,
64a5cfa6 3045 .set_compression = smb2_set_compression,
38107d45
SF		 3046 .mkdir = smb2_mkdir,
3047 .mkdir_setinfo = smb2_mkdir_setinfo,
3048 .rmdir = smb2_rmdir,
3049 .unlink = smb2_unlink,
3050 .rename = smb2_rename_path,
3051 .create_hardlink = smb2_create_hardlink,
b42bf888 3052 .query_symlink = smb2_query_symlink,
c22870ea 3053 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 3054 .create_mf_symlink = smb3_create_mf_symlink,
38107d45
SF		 3055 .open = smb2_open_file,
3056 .set_fid = smb2_set_fid,
3057 .close = smb2_close_file,
3058 .flush = smb2_flush_file,
3059 .async_readv = smb2_async_readv,
3060 .async_writev = smb2_async_writev,
3061 .sync_read = smb2_sync_read,
3062 .sync_write = smb2_sync_write,
3063 .query_dir_first = smb2_query_dir_first,
3064 .query_dir_next = smb2_query_dir_next,
3065 .close_dir = smb2_close_dir,
3066 .calc_smb_size = smb2_calc_size,
3067 .is_status_pending = smb2_is_status_pending,
511c54a2 3068 .is_session_expired = smb2_is_session_expired,
38107d45
SF		 3069 .oplock_response = smb2_oplock_response,
3070 .queryfs = smb2_queryfs,
3071 .mand_lock = smb2_mand_lock,
3072 .mand_unlock_range = smb2_unlock_range,
3073 .push_mand_locks = smb2_push_mandatory_locks,
3074 .get_lease_key = smb2_get_lease_key,
3075 .set_lease_key = smb2_set_lease_key,
3076 .new_lease_key = smb2_new_lease_key,
373512ec 3077 .generate_signingkey = generate_smb30signingkey,
38107d45 3078 .calc_signature = smb3_calc_signature,
b3152e2c 3079 .set_integrity = smb3_set_integrity,
53ef1016 3080 .is_read_op = smb21_is_read_op,
42873b0a 3081 .set_oplock_level = smb3_set_oplock_level,
f047390a
PS		 3082 .create_lease_buf = smb3_create_lease_buf,
3083 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 3084 .copychunk_range = smb2_copychunk_range,
ca9e7a1c 3085 .duplicate_extents = smb2_duplicate_extents,
ff1c038a 3086 .validate_negotiate = smb3_validate_negotiate,
7f6c5008 3087 .wp_retry_size = smb2_wp_retry_size,
52755808 3088 .dir_needs_close = smb2_dir_needs_close,
31742c5a 3089 .fallocate = smb3_fallocate,
834170c8 3090 .enum_snapshots = smb3_enum_snapshots,
026e93dc
PS		 3091 .init_transform_rq = smb3_init_transform_rq,
3092 .free_transform_rq = smb3_free_transform_rq,
4326ed2f
PS		 3093 .is_transform_hdr = smb3_is_transform_hdr,
3094 .receive_transform = smb3_receive_transform,
9d49640a 3095 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3096 .select_sectype = smb2_select_sectype,
95907fea
RS		 3097#ifdef CONFIG_CIFS_XATTR
3098 .query_all_EAs = smb2_query_eas,
5517554e 3099 .set_EA = smb2_set_ea,
95907fea 3100#endif /* CIFS_XATTR */
2f1afe25
SP		 3101#ifdef CONFIG_CIFS_ACL
3102 .get_acl = get_smb2_acl,
3103 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 3104 .set_acl = set_smb2_acl,
2f1afe25 3105#endif /* CIFS_ACL */
1080ef75
SF		 3106};
3107
aab1893d
SF		 3108#ifdef CONFIG_CIFS_SMB311
3109struct smb_version_operations smb311_operations = {
3110 .compare_fids = smb2_compare_fids,
3111 .setup_request = smb2_setup_request,
3112 .setup_async_request = smb2_setup_async_request,
3113 .check_receive = smb2_check_receive,
3114 .add_credits = smb2_add_credits,
3115 .set_credits = smb2_set_credits,
3116 .get_credits_field = smb2_get_credits_field,
3117 .get_credits = smb2_get_credits,
3118 .wait_mtu_credits = smb2_wait_mtu_credits,
3119 .get_next_mid = smb2_get_next_mid,
3120 .read_data_offset = smb2_read_data_offset,
3121 .read_data_length = smb2_read_data_length,
3122 .map_error = map_smb2_to_linux_error,
3123 .find_mid = smb2_find_mid,
3124 .check_message = smb2_check_message,
3125 .dump_detail = smb2_dump_detail,
3126 .clear_stats = smb2_clear_stats,
3127 .print_stats = smb2_print_stats,
3128 .dump_share_caps = smb2_dump_share_caps,
3129 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 3130 .handle_cancelled_mid = smb2_handle_cancelled_mid,
aab1893d
SF		 3131 .downgrade_oplock = smb2_downgrade_oplock,
3132 .need_neg = smb2_need_neg,
3133 .negotiate = smb2_negotiate,
3134 .negotiate_wsize = smb2_negotiate_wsize,
3135 .negotiate_rsize = smb2_negotiate_rsize,
3136 .sess_setup = SMB2_sess_setup,
3137 .logoff = SMB2_logoff,
3138 .tree_connect = SMB2_tcon,
3139 .tree_disconnect = SMB2_tdis,
3140 .qfs_tcon = smb3_qfs_tcon,
3141 .is_path_accessible = smb2_is_path_accessible,
3142 .can_echo = smb2_can_echo,
3143 .echo = SMB2_echo,
3144 .query_path_info = smb2_query_path_info,
3145 .get_srv_inum = smb2_get_srv_inum,
3146 .query_file_info = smb2_query_file_info,
3147 .set_path_size = smb2_set_path_size,
3148 .set_file_size = smb2_set_file_size,
3149 .set_file_info = smb2_set_file_info,
3150 .set_compression = smb2_set_compression,
3151 .mkdir = smb2_mkdir,
3152 .mkdir_setinfo = smb2_mkdir_setinfo,
3153 .rmdir = smb2_rmdir,
3154 .unlink = smb2_unlink,
3155 .rename = smb2_rename_path,
3156 .create_hardlink = smb2_create_hardlink,
3157 .query_symlink = smb2_query_symlink,
3158 .query_mf_symlink = smb3_query_mf_symlink,
3159 .create_mf_symlink = smb3_create_mf_symlink,
3160 .open = smb2_open_file,
3161 .set_fid = smb2_set_fid,
3162 .close = smb2_close_file,
3163 .flush = smb2_flush_file,
3164 .async_readv = smb2_async_readv,
3165 .async_writev = smb2_async_writev,
3166 .sync_read = smb2_sync_read,
3167 .sync_write = smb2_sync_write,
3168 .query_dir_first = smb2_query_dir_first,
3169 .query_dir_next = smb2_query_dir_next,
3170 .close_dir = smb2_close_dir,
3171 .calc_smb_size = smb2_calc_size,
3172 .is_status_pending = smb2_is_status_pending,
511c54a2 3173 .is_session_expired = smb2_is_session_expired,
aab1893d
SF		 3174 .oplock_response = smb2_oplock_response,
3175 .queryfs = smb2_queryfs,
3176 .mand_lock = smb2_mand_lock,
3177 .mand_unlock_range = smb2_unlock_range,
3178 .push_mand_locks = smb2_push_mandatory_locks,
3179 .get_lease_key = smb2_get_lease_key,
3180 .set_lease_key = smb2_set_lease_key,
3181 .new_lease_key = smb2_new_lease_key,
373512ec 3182 .generate_signingkey = generate_smb311signingkey,
aab1893d 3183 .calc_signature = smb3_calc_signature,
b3152e2c 3184 .set_integrity = smb3_set_integrity,
aab1893d
SF		 3185 .is_read_op = smb21_is_read_op,
3186 .set_oplock_level = smb3_set_oplock_level,
3187 .create_lease_buf = smb3_create_lease_buf,
3188 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 3189 .copychunk_range = smb2_copychunk_range,
02b16665 3190 .duplicate_extents = smb2_duplicate_extents,
aab1893d
SF		 3191/* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
3192 .wp_retry_size = smb2_wp_retry_size,
3193 .dir_needs_close = smb2_dir_needs_close,
3194 .fallocate = smb3_fallocate,
834170c8 3195 .enum_snapshots = smb3_enum_snapshots,
026e93dc
PS		 3196 .init_transform_rq = smb3_init_transform_rq,
3197 .free_transform_rq = smb3_free_transform_rq,
4326ed2f
PS		 3198 .is_transform_hdr = smb3_is_transform_hdr,
3199 .receive_transform = smb3_receive_transform,
9d49640a 3200 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 3201 .select_sectype = smb2_select_sectype,
95907fea
RS		 3202#ifdef CONFIG_CIFS_XATTR
3203 .query_all_EAs = smb2_query_eas,
5517554e 3204 .set_EA = smb2_set_ea,
95907fea 3205#endif /* CIFS_XATTR */
aab1893d
SF		 3206};
3207#endif /* CIFS_SMB311 */
3208
dd446b16
SF		 3209struct smb_version_values smb20_values = {
3210 .version_string = SMB20_VERSION_STRING,
3211 .protocol_id = SMB20_PROT_ID,
3212 .req_capabilities = 0, /* MBZ */
3213 .large_lock_type = 0,
3214 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3215 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3216 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3217 .header_size = sizeof(struct smb2_sync_hdr),
3218 .header_preamble_size = 0,
dd446b16
SF		 3219 .max_header_size = MAX_SMB2_HDR_SIZE,
3220 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3221 .lock_cmd = SMB2_LOCK,
3222 .cap_unix = 0,
3223 .cap_nt_find = SMB2_NT_FIND,
3224 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3225 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3226 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 3227 .create_lease_size = sizeof(struct create_lease),
dd446b16
SF		 3228};
3229
1080ef75
SF		 3230struct smb_version_values smb21_values = {
3231 .version_string = SMB21_VERSION_STRING,
e4aa25e7
SF		 3232 .protocol_id = SMB21_PROT_ID,
3233 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
3234 .large_lock_type = 0,
3235 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3236 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3237 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3238 .header_size = sizeof(struct smb2_sync_hdr),
3239 .header_preamble_size = 0,
e4aa25e7
SF		 3240 .max_header_size = MAX_SMB2_HDR_SIZE,
3241 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3242 .lock_cmd = SMB2_LOCK,
3243 .cap_unix = 0,
3244 .cap_nt_find = SMB2_NT_FIND,
3245 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3246 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3247 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 3248 .create_lease_size = sizeof(struct create_lease),
e4aa25e7
SF		 3249};
3250
9764c02f
SF		 3251struct smb_version_values smb3any_values = {
3252 .version_string = SMB3ANY_VERSION_STRING,
3253 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3254 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3255 .large_lock_type = 0,
3256 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3257 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3258 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3259 .header_size = sizeof(struct smb2_sync_hdr),
3260 .header_preamble_size = 0,
9764c02f
SF		 3261 .max_header_size = MAX_SMB2_HDR_SIZE,
3262 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3263 .lock_cmd = SMB2_LOCK,
3264 .cap_unix = 0,
3265 .cap_nt_find = SMB2_NT_FIND,
3266 .cap_large_files = SMB2_LARGE_FILES,
3267 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3268 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3269 .create_lease_size = sizeof(struct create_lease_v2),
3270};
3271
3272struct smb_version_values smbdefault_values = {
3273 .version_string = SMBDEFAULT_VERSION_STRING,
3274 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3275 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3276 .large_lock_type = 0,
3277 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3278 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3279 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3280 .header_size = sizeof(struct smb2_sync_hdr),
3281 .header_preamble_size = 0,
9764c02f
SF		 3282 .max_header_size = MAX_SMB2_HDR_SIZE,
3283 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3284 .lock_cmd = SMB2_LOCK,
3285 .cap_unix = 0,
3286 .cap_nt_find = SMB2_NT_FIND,
3287 .cap_large_files = SMB2_LARGE_FILES,
3288 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3289 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3290 .create_lease_size = sizeof(struct create_lease_v2),
3291};
3292
e4aa25e7
SF		 3293struct smb_version_values smb30_values = {
3294 .version_string = SMB30_VERSION_STRING,
3295 .protocol_id = SMB30_PROT_ID,
373512ec 3296 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
027e8eec
PS		 3297 .large_lock_type = 0,
3298 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3299 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3300 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3301 .header_size = sizeof(struct smb2_sync_hdr),
3302 .header_preamble_size = 0,
093b2bda 3303 .max_header_size = MAX_SMB2_HDR_SIZE,
09a4707e 3304 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2dc7e1c0 3305 .lock_cmd = SMB2_LOCK,
29e20f9c
PS		 3306 .cap_unix = 0,
3307 .cap_nt_find = SMB2_NT_FIND,
3308 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3309 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3310 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 3311 .create_lease_size = sizeof(struct create_lease_v2),
1080ef75 3312};
20b6d8b4
SF		 3313
3314struct smb_version_values smb302_values = {
3315 .version_string = SMB302_VERSION_STRING,
3316 .protocol_id = SMB302_PROT_ID,
373512ec 3317 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
20b6d8b4
SF		 3318 .large_lock_type = 0,
3319 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3320 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3321 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3322 .header_size = sizeof(struct smb2_sync_hdr),
3323 .header_preamble_size = 0,
20b6d8b4
SF		 3324 .max_header_size = MAX_SMB2_HDR_SIZE,
3325 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3326 .lock_cmd = SMB2_LOCK,
3327 .cap_unix = 0,
3328 .cap_nt_find = SMB2_NT_FIND,
3329 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 3330 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3331 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 3332 .create_lease_size = sizeof(struct create_lease_v2),
20b6d8b4 3333};
5f7fbf73
SF		 3334
3335#ifdef CONFIG_CIFS_SMB311
3336struct smb_version_values smb311_values = {
3337 .version_string = SMB311_VERSION_STRING,
3338 .protocol_id = SMB311_PROT_ID,
1955880b 3339 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
5f7fbf73
SF		 3340 .large_lock_type = 0,
3341 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3342 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3343 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
977b6170
RS		 3344 .header_size = sizeof(struct smb2_sync_hdr),
3345 .header_preamble_size = 0,
5f7fbf73
SF		 3346 .max_header_size = MAX_SMB2_HDR_SIZE,
3347 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3348 .lock_cmd = SMB2_LOCK,
3349 .cap_unix = 0,
3350 .cap_nt_find = SMB2_NT_FIND,
3351 .cap_large_files = SMB2_LARGE_FILES,
3352 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3353 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3354 .create_lease_size = sizeof(struct create_lease_v2),
3355};
3356#endif /* SMB311 */
Linux 6.x block layer and io_uring tree(s)