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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
[mirror_ubuntu-artful-kernel.git] / fs / cifs / smb2ops.c
CommitLineData
1080ef75
SF		 1/*
2 * SMB2 version specific operations
3 *
4 * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
5 *
6 * This library is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License v2 as published
8 * by the Free Software Foundation.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
3a3bab50 20#include <linux/pagemap.h>
6fc05c25 21#include <linux/vfs.h>
f29ebb47 22#include <linux/falloc.h>
026e93dc 23#include <linux/scatterlist.h>
4fa8e504 24#include <linux/uuid.h>
026e93dc 25#include <crypto/aead.h>
1080ef75 26#include "cifsglob.h"
2dc7e1c0
PS		 27#include "smb2pdu.h"
28#include "smb2proto.h"
28ea5290
PS		 29#include "cifsproto.h"
30#include "cifs_debug.h"
b42bf888 31#include "cifs_unicode.h"
2e44b288 32#include "smb2status.h"
6fc05c25 33#include "smb2glob.h"
834170c8 34#include "cifs_ioctl.h"
28ea5290
PS		 35
36static int
37change_conf(struct TCP_Server_Info *server)
38{
39 server->credits += server->echo_credits + server->oplock_credits;
40 server->oplock_credits = server->echo_credits = 0;
41 switch (server->credits) {
42 case 0:
43 return -1;
44 case 1:
45 server->echoes = false;
46 server->oplocks = false;
f96637be 47 cifs_dbg(VFS, "disabling echoes and oplocks\n");
28ea5290
PS		 48 break;
49 case 2:
50 server->echoes = true;
51 server->oplocks = false;
52 server->echo_credits = 1;
f96637be 53 cifs_dbg(FYI, "disabling oplocks\n");
28ea5290
PS		 54 break;
55 default:
56 server->echoes = true;
e0ddde9d
SF		 57 if (enable_oplocks) {
58 server->oplocks = true;
59 server->oplock_credits = 1;
60 } else
61 server->oplocks = false;
62
28ea5290 63 server->echo_credits = 1;
28ea5290
PS		 64 }
65 server->credits -= server->echo_credits + server->oplock_credits;
66 return 0;
67}
68
69static void
70smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
71 const int optype)
72{
73 int *val, rc = 0;
74 spin_lock(&server->req_lock);
75 val = server->ops->get_credits_field(server, optype);
76 *val += add;
141891f4
SF		 77 if (*val > 65000) {
78 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
79 printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
80 }
28ea5290 81 server->in_flight--;
ec2e4523 82 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
28ea5290 83 rc = change_conf(server);
983c88a4
PS		 84 /*
85 * Sometimes server returns 0 credits on oplock break ack - we need to
86 * rebalance credits in this case.
87 */
88 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
89 server->oplocks) {
90 if (server->credits > 1) {
91 server->credits--;
92 server->oplock_credits++;
93 }
94 }
28ea5290
PS		 95 spin_unlock(&server->req_lock);
96 wake_up(&server->request_q);
97 if (rc)
98 cifs_reconnect(server);
99}
100
101static void
102smb2_set_credits(struct TCP_Server_Info *server, const int val)
103{
104 spin_lock(&server->req_lock);
105 server->credits = val;
106 spin_unlock(&server->req_lock);
107}
108
109static int *
110smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
111{
112 switch (optype) {
113 case CIFS_ECHO_OP:
114 return &server->echo_credits;
115 case CIFS_OBREAK_OP:
116 return &server->oplock_credits;
117 default:
118 return &server->credits;
119 }
120}
121
122static unsigned int
123smb2_get_credits(struct mid_q_entry *mid)
124{
31473fc4
PS		 125 struct smb2_sync_hdr *shdr = get_sync_hdr(mid->resp_buf);
126
127 return le16_to_cpu(shdr->CreditRequest);
28ea5290 128}
2dc7e1c0 129
cb7e9eab
PS		 130static int
131smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
132 unsigned int *num, unsigned int *credits)
133{
134 int rc = 0;
135 unsigned int scredits;
136
137 spin_lock(&server->req_lock);
138 while (1) {
139 if (server->credits <= 0) {
140 spin_unlock(&server->req_lock);
141 cifs_num_waiters_inc(server);
142 rc = wait_event_killable(server->request_q,
143 has_credits(server, &server->credits));
144 cifs_num_waiters_dec(server);
145 if (rc)
146 return rc;
147 spin_lock(&server->req_lock);
148 } else {
149 if (server->tcpStatus == CifsExiting) {
150 spin_unlock(&server->req_lock);
151 return -ENOENT;
152 }
153
154 scredits = server->credits;
155 /* can deadlock with reopen */
156 if (scredits == 1) {
157 *num = SMB2_MAX_BUFFER_SIZE;
158 *credits = 0;
159 break;
160 }
161
162 /* leave one credit for a possible reopen */
163 scredits--;
164 *num = min_t(unsigned int, size,
165 scredits * SMB2_MAX_BUFFER_SIZE);
166
167 *credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
168 server->credits -= *credits;
169 server->in_flight++;
170 break;
171 }
172 }
173 spin_unlock(&server->req_lock);
174 return rc;
175}
176
2dc7e1c0
PS		 177static __u64
178smb2_get_next_mid(struct TCP_Server_Info *server)
179{
180 __u64 mid;
181 /* for SMB2 we need the current value */
182 spin_lock(&GlobalMid_Lock);
183 mid = server->CurrentMid++;
184 spin_unlock(&GlobalMid_Lock);
185 return mid;
186}
1080ef75 187
093b2bda
PS		 188static struct mid_q_entry *
189smb2_find_mid(struct TCP_Server_Info *server, char *buf)
190{
191 struct mid_q_entry *mid;
31473fc4
PS		 192 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
193 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
093b2bda 194
31473fc4 195 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
373512ec
SF		 196 cifs_dbg(VFS, "encrypted frame parsing not supported yet");
197 return NULL;
198 }
199
093b2bda
PS		 200 spin_lock(&GlobalMid_Lock);
201 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
9235d098 202 if ((mid->mid == wire_mid) &&
093b2bda 203 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
31473fc4 204 (mid->command == shdr->Command)) {
093b2bda
PS		 205 spin_unlock(&GlobalMid_Lock);
206 return mid;
207 }
208 }
209 spin_unlock(&GlobalMid_Lock);
210 return NULL;
211}
212
213static void
214smb2_dump_detail(void *buf)
215{
216#ifdef CONFIG_CIFS_DEBUG2
31473fc4 217 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
093b2bda 218
f96637be 219 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
31473fc4
PS		 220 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
221 shdr->ProcessId);
222 cifs_dbg(VFS, "smb buf %p len %u\n", buf, smb2_calc_size(buf));
093b2bda
PS		 223#endif
224}
225
ec2e4523
PS		 226static bool
227smb2_need_neg(struct TCP_Server_Info *server)
228{
229 return server->max_read == 0;
230}
231
232static int
233smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
234{
235 int rc;
236 ses->server->CurrentMid = 0;
237 rc = SMB2_negotiate(xid, ses);
238 /* BB we probably don't need to retry with modern servers */
239 if (rc == -EAGAIN)
240 rc = -EHOSTDOWN;
241 return rc;
242}
243
3a3bab50
PS		 244static unsigned int
245smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
246{
247 struct TCP_Server_Info *server = tcon->ses->server;
248 unsigned int wsize;
249
250 /* start with specified wsize, or default */
251 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
252 wsize = min_t(unsigned int, wsize, server->max_write);
cb7e9eab
PS		 253
254 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
255 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 256
3a3bab50
PS		 257 return wsize;
258}
259
260static unsigned int
261smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
262{
263 struct TCP_Server_Info *server = tcon->ses->server;
264 unsigned int rsize;
265
266 /* start with specified rsize, or default */
267 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
268 rsize = min_t(unsigned int, rsize, server->max_read);
bed9da02
PS		 269
270 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
271 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 272
3a3bab50
PS		 273 return rsize;
274}
275
c481e9fe
SF		 276#ifdef CONFIG_CIFS_STATS2
277static int
278SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
279{
280 int rc;
281 unsigned int ret_data_len = 0;
282 struct network_interface_info_ioctl_rsp *out_buf;
283
284 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
285 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
51146625 286 false /* use_ipc */,
c481e9fe
SF		 287 NULL /* no data input */, 0 /* no data input */,
288 (char **)&out_buf, &ret_data_len);
9ffc5412
SF		 289 if (rc != 0)
290 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
291 else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) {
292 cifs_dbg(VFS, "server returned bad net interface info buf\n");
293 rc = -EINVAL;
294 } else {
c481e9fe
SF		 295 /* Dump info on first interface */
296 cifs_dbg(FYI, "Adapter Capability 0x%x\t",
297 le32_to_cpu(out_buf->Capability));
298 cifs_dbg(FYI, "Link Speed %lld\n",
299 le64_to_cpu(out_buf->LinkSpeed));
9ffc5412 300 }
24df1483 301 kfree(out_buf);
c481e9fe
SF		 302 return rc;
303}
304#endif /* STATS2 */
305
af6a12ea
SF		 306static void
307smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
308{
309 int rc;
310 __le16 srch_path = 0; /* Null - open root of share */
311 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
312 struct cifs_open_parms oparms;
313 struct cifs_fid fid;
314
315 oparms.tcon = tcon;
316 oparms.desired_access = FILE_READ_ATTRIBUTES;
317 oparms.disposition = FILE_OPEN;
318 oparms.create_options = 0;
319 oparms.fid = &fid;
320 oparms.reconnect = false;
321
322 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
323 if (rc)
324 return;
325
c481e9fe
SF		 326#ifdef CONFIG_CIFS_STATS2
327 SMB3_request_interfaces(xid, tcon);
328#endif /* STATS2 */
329
af6a12ea
SF		 330 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
331 FS_ATTRIBUTE_INFORMATION);
332 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
333 FS_DEVICE_INFORMATION);
334 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
335 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
336 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
337 return;
338}
339
34f62640
SF		 340static void
341smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
342{
343 int rc;
344 __le16 srch_path = 0; /* Null - open root of share */
345 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
346 struct cifs_open_parms oparms;
347 struct cifs_fid fid;
348
349 oparms.tcon = tcon;
350 oparms.desired_access = FILE_READ_ATTRIBUTES;
351 oparms.disposition = FILE_OPEN;
352 oparms.create_options = 0;
353 oparms.fid = &fid;
354 oparms.reconnect = false;
355
356 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
357 if (rc)
358 return;
359
2167114c
SF		 360 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
361 FS_ATTRIBUTE_INFORMATION);
362 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
363 FS_DEVICE_INFORMATION);
34f62640
SF		 364 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
365 return;
366}
367
2503a0db
PS		 368static int
369smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
370 struct cifs_sb_info *cifs_sb, const char *full_path)
371{
372 int rc;
2503a0db 373 __le16 *utf16_path;
2e44b288 374 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 375 struct cifs_open_parms oparms;
376 struct cifs_fid fid;
2503a0db
PS		 377
378 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
379 if (!utf16_path)
380 return -ENOMEM;
381
064f6047
PS		 382 oparms.tcon = tcon;
383 oparms.desired_access = FILE_READ_ATTRIBUTES;
384 oparms.disposition = FILE_OPEN;
385 oparms.create_options = 0;
386 oparms.fid = &fid;
9cbc0b73 387 oparms.reconnect = false;
064f6047 388
b42bf888 389 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
2503a0db
PS		 390 if (rc) {
391 kfree(utf16_path);
392 return rc;
393 }
394
064f6047 395 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2503a0db
PS		 396 kfree(utf16_path);
397 return rc;
398}
399
be4cb9e3
PS		 400static int
401smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
402 struct cifs_sb_info *cifs_sb, const char *full_path,
403 u64 *uniqueid, FILE_ALL_INFO *data)
404{
405 *uniqueid = le64_to_cpu(data->IndexNumber);
406 return 0;
407}
408
b7546bc5
PS		 409static int
410smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
411 struct cifs_fid *fid, FILE_ALL_INFO *data)
412{
413 int rc;
414 struct smb2_file_all_info *smb2_data;
415
1bbe4997 416 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
b7546bc5
PS		 417 GFP_KERNEL);
418 if (smb2_data == NULL)
419 return -ENOMEM;
420
421 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
422 smb2_data);
423 if (!rc)
424 move_smb2_info_to_cifs(data, smb2_data);
425 kfree(smb2_data);
426 return rc;
427}
428
9094fad1
PS		 429static bool
430smb2_can_echo(struct TCP_Server_Info *server)
431{
432 return server->echoes;
433}
434
d60622eb
PS		 435static void
436smb2_clear_stats(struct cifs_tcon *tcon)
437{
438#ifdef CONFIG_CIFS_STATS
439 int i;
440 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
441 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
442 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
443 }
444#endif
445}
446
769ee6a4
SF		 447static void
448smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
449{
450 seq_puts(m, "\n\tShare Capabilities:");
451 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
452 seq_puts(m, " DFS,");
453 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
454 seq_puts(m, " CONTINUOUS AVAILABILITY,");
455 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
456 seq_puts(m, " SCALEOUT,");
457 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
458 seq_puts(m, " CLUSTER,");
459 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
460 seq_puts(m, " ASYMMETRIC,");
461 if (tcon->capabilities == 0)
462 seq_puts(m, " None");
af6a12ea
SF		 463 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
464 seq_puts(m, " Aligned,");
465 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
466 seq_puts(m, " Partition Aligned,");
467 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
468 seq_puts(m, " SSD,");
469 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
470 seq_puts(m, " TRIM-support,");
471
769ee6a4 472 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
af6a12ea
SF		 473 if (tcon->perf_sector_size)
474 seq_printf(m, "\tOptimal sector size: 0x%x",
475 tcon->perf_sector_size);
769ee6a4
SF		 476}
477
d60622eb
PS		 478static void
479smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
480{
481#ifdef CONFIG_CIFS_STATS
482 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
483 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
484 seq_printf(m, "\nNegotiates: %d sent %d failed",
485 atomic_read(&sent[SMB2_NEGOTIATE_HE]),
486 atomic_read(&failed[SMB2_NEGOTIATE_HE]));
487 seq_printf(m, "\nSessionSetups: %d sent %d failed",
488 atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
489 atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
d60622eb
PS		 490 seq_printf(m, "\nLogoffs: %d sent %d failed",
491 atomic_read(&sent[SMB2_LOGOFF_HE]),
492 atomic_read(&failed[SMB2_LOGOFF_HE]));
493 seq_printf(m, "\nTreeConnects: %d sent %d failed",
494 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
495 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
496 seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
497 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
498 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
499 seq_printf(m, "\nCreates: %d sent %d failed",
500 atomic_read(&sent[SMB2_CREATE_HE]),
501 atomic_read(&failed[SMB2_CREATE_HE]));
502 seq_printf(m, "\nCloses: %d sent %d failed",
503 atomic_read(&sent[SMB2_CLOSE_HE]),
504 atomic_read(&failed[SMB2_CLOSE_HE]));
505 seq_printf(m, "\nFlushes: %d sent %d failed",
506 atomic_read(&sent[SMB2_FLUSH_HE]),
507 atomic_read(&failed[SMB2_FLUSH_HE]));
508 seq_printf(m, "\nReads: %d sent %d failed",
509 atomic_read(&sent[SMB2_READ_HE]),
510 atomic_read(&failed[SMB2_READ_HE]));
511 seq_printf(m, "\nWrites: %d sent %d failed",
512 atomic_read(&sent[SMB2_WRITE_HE]),
513 atomic_read(&failed[SMB2_WRITE_HE]));
514 seq_printf(m, "\nLocks: %d sent %d failed",
515 atomic_read(&sent[SMB2_LOCK_HE]),
516 atomic_read(&failed[SMB2_LOCK_HE]));
517 seq_printf(m, "\nIOCTLs: %d sent %d failed",
518 atomic_read(&sent[SMB2_IOCTL_HE]),
519 atomic_read(&failed[SMB2_IOCTL_HE]));
520 seq_printf(m, "\nCancels: %d sent %d failed",
521 atomic_read(&sent[SMB2_CANCEL_HE]),
522 atomic_read(&failed[SMB2_CANCEL_HE]));
523 seq_printf(m, "\nEchos: %d sent %d failed",
524 atomic_read(&sent[SMB2_ECHO_HE]),
525 atomic_read(&failed[SMB2_ECHO_HE]));
526 seq_printf(m, "\nQueryDirectories: %d sent %d failed",
527 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
528 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
529 seq_printf(m, "\nChangeNotifies: %d sent %d failed",
530 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
531 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
532 seq_printf(m, "\nQueryInfos: %d sent %d failed",
533 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
534 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
535 seq_printf(m, "\nSetInfos: %d sent %d failed",
536 atomic_read(&sent[SMB2_SET_INFO_HE]),
537 atomic_read(&failed[SMB2_SET_INFO_HE]));
538 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
539 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
540 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
541#endif
542}
543
f0df737e
PS		 544static void
545smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
546{
2b0143b5 547 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
53ef1016
PS		 548 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
549
f0df737e
PS		 550 cfile->fid.persistent_fid = fid->persistent_fid;
551 cfile->fid.volatile_fid = fid->volatile_fid;
42873b0a
PS		 552 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
553 &fid->purge_cache);
18cceb6a 554 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
94f87371 555 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
f0df737e
PS		 556}
557
760ad0ca 558static void
f0df737e
PS		 559smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
560 struct cifs_fid *fid)
561{
760ad0ca 562 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
f0df737e
PS		 563}
564
41c1358e
SF		 565static int
566SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
567 u64 persistent_fid, u64 volatile_fid,
568 struct copychunk_ioctl *pcchunk)
569{
570 int rc;
571 unsigned int ret_data_len;
572 struct resume_key_req *res_key;
573
574 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
575 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
51146625 576 false /* use_ipc */,
41c1358e
SF		 577 NULL, 0 /* no input */,
578 (char **)&res_key, &ret_data_len);
579
580 if (rc) {
581 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
582 goto req_res_key_exit;
583 }
584 if (ret_data_len < sizeof(struct resume_key_req)) {
585 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
586 rc = -EINVAL;
587 goto req_res_key_exit;
588 }
589 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
590
591req_res_key_exit:
592 kfree(res_key);
593 return rc;
594}
595
620d8745 596static ssize_t
312bbc59 597smb2_copychunk_range(const unsigned int xid,
41c1358e
SF		 598 struct cifsFileInfo *srcfile,
599 struct cifsFileInfo *trgtfile, u64 src_off,
600 u64 len, u64 dest_off)
601{
602 int rc;
603 unsigned int ret_data_len;
604 struct copychunk_ioctl *pcchunk;
9bf0c9cd
SF		 605 struct copychunk_ioctl_rsp *retbuf = NULL;
606 struct cifs_tcon *tcon;
607 int chunks_copied = 0;
608 bool chunk_sizes_updated = false;
620d8745 609 ssize_t bytes_written, total_bytes_written = 0;
41c1358e
SF		 610
611 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
612
613 if (pcchunk == NULL)
614 return -ENOMEM;
615
312bbc59 616 cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
41c1358e
SF		 617 /* Request a key from the server to identify the source of the copy */
618 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
619 srcfile->fid.persistent_fid,
620 srcfile->fid.volatile_fid, pcchunk);
621
622 /* Note: request_res_key sets res_key null only if rc !=0 */
623 if (rc)
9bf0c9cd 624 goto cchunk_out;
41c1358e
SF		 625
626 /* For now array only one chunk long, will make more flexible later */
bc09d141 627 pcchunk->ChunkCount = cpu_to_le32(1);
41c1358e 628 pcchunk->Reserved = 0;
41c1358e
SF		 629 pcchunk->Reserved2 = 0;
630
9bf0c9cd 631 tcon = tlink_tcon(trgtfile->tlink);
41c1358e 632
9bf0c9cd
SF		 633 while (len > 0) {
634 pcchunk->SourceOffset = cpu_to_le64(src_off);
635 pcchunk->TargetOffset = cpu_to_le64(dest_off);
636 pcchunk->Length =
637 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
41c1358e 638
9bf0c9cd
SF		 639 /* Request server copy to target from src identified by key */
640 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
641 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
51146625
AA		 642 true /* is_fsctl */, false /* use_ipc */,
643 (char *)pcchunk,
9bf0c9cd
SF		 644 sizeof(struct copychunk_ioctl), (char **)&retbuf,
645 &ret_data_len);
646 if (rc == 0) {
647 if (ret_data_len !=
648 sizeof(struct copychunk_ioctl_rsp)) {
649 cifs_dbg(VFS, "invalid cchunk response size\n");
650 rc = -EIO;
651 goto cchunk_out;
652 }
653 if (retbuf->TotalBytesWritten == 0) {
654 cifs_dbg(FYI, "no bytes copied\n");
655 rc = -EIO;
656 goto cchunk_out;
657 }
658 /*
659 * Check if server claimed to write more than we asked
660 */
661 if (le32_to_cpu(retbuf->TotalBytesWritten) >
662 le32_to_cpu(pcchunk->Length)) {
663 cifs_dbg(VFS, "invalid copy chunk response\n");
664 rc = -EIO;
665 goto cchunk_out;
666 }
667 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
668 cifs_dbg(VFS, "invalid num chunks written\n");
669 rc = -EIO;
670 goto cchunk_out;
671 }
672 chunks_copied++;
673
620d8745
SP		 674 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
675 src_off += bytes_written;
676 dest_off += bytes_written;
677 len -= bytes_written;
678 total_bytes_written += bytes_written;
9bf0c9cd 679
620d8745 680 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
9bf0c9cd
SF		 681 le32_to_cpu(retbuf->ChunksWritten),
682 le32_to_cpu(retbuf->ChunkBytesWritten),
620d8745 683 bytes_written);
9bf0c9cd
SF		 684 } else if (rc == -EINVAL) {
685 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
686 goto cchunk_out;
687
688 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
689 le32_to_cpu(retbuf->ChunksWritten),
690 le32_to_cpu(retbuf->ChunkBytesWritten),
691 le32_to_cpu(retbuf->TotalBytesWritten));
692
693 /*
694 * Check if this is the first request using these sizes,
695 * (ie check if copy succeed once with original sizes
696 * and check if the server gave us different sizes after
697 * we already updated max sizes on previous request).
698 * if not then why is the server returning an error now
699 */
700 if ((chunks_copied != 0) || chunk_sizes_updated)
701 goto cchunk_out;
702
703 /* Check that server is not asking us to grow size */
704 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
705 tcon->max_bytes_chunk)
706 tcon->max_bytes_chunk =
707 le32_to_cpu(retbuf->ChunkBytesWritten);
708 else
709 goto cchunk_out; /* server gave us bogus size */
710
711 /* No need to change MaxChunks since already set to 1 */
712 chunk_sizes_updated = true;
2477bc58
SP		 713 } else
714 goto cchunk_out;
9bf0c9cd 715 }
41c1358e 716
9bf0c9cd 717cchunk_out:
41c1358e 718 kfree(pcchunk);
24df1483 719 kfree(retbuf);
620d8745
SP		 720 if (rc)
721 return rc;
722 else
723 return total_bytes_written;
41c1358e
SF		 724}
725
7a5cfb19
PS		 726static int
727smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
728 struct cifs_fid *fid)
729{
730 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
731}
732
09a4707e
PS		 733static unsigned int
734smb2_read_data_offset(char *buf)
735{
736 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
737 return rsp->DataOffset;
738}
739
740static unsigned int
741smb2_read_data_length(char *buf)
742{
743 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
744 return le32_to_cpu(rsp->DataLength);
745}
746
d8e05039
PS		 747
748static int
db8b631d 749smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
d8e05039
PS		 750 struct cifs_io_parms *parms, unsigned int *bytes_read,
751 char **buf, int *buf_type)
752{
db8b631d
SF		 753 parms->persistent_fid = pfid->persistent_fid;
754 parms->volatile_fid = pfid->volatile_fid;
d8e05039
PS		 755 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
756}
757
009d3443 758static int
db8b631d 759smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
009d3443
PS		 760 struct cifs_io_parms *parms, unsigned int *written,
761 struct kvec *iov, unsigned long nr_segs)
762{
763
db8b631d
SF		 764 parms->persistent_fid = pfid->persistent_fid;
765 parms->volatile_fid = pfid->volatile_fid;
009d3443
PS		 766 return SMB2_write(xid, parms, written, iov, nr_segs);
767}
768
d43cc793
SF		 769/* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
770static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
771 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
772{
773 struct cifsInodeInfo *cifsi;
774 int rc;
775
776 cifsi = CIFS_I(inode);
777
778 /* if file already sparse don't bother setting sparse again */
779 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
780 return true; /* already sparse */
781
782 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
783 return true; /* already not sparse */
784
785 /*
786 * Can't check for sparse support on share the usual way via the
787 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
788 * since Samba server doesn't set the flag on the share, yet
789 * supports the set sparse FSCTL and returns sparse correctly
790 * in the file attributes. If we fail setting sparse though we
791 * mark that server does not support sparse files for this share
792 * to avoid repeatedly sending the unsupported fsctl to server
793 * if the file is repeatedly extended.
794 */
795 if (tcon->broken_sparse_sup)
796 return false;
797
798 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
799 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
51146625
AA		 800 true /* is_fctl */, false /* use_ipc */,
801 &setsparse, 1, NULL, NULL);
d43cc793
SF		 802 if (rc) {
803 tcon->broken_sparse_sup = true;
804 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
805 return false;
806 }
807
808 if (setsparse)
809 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
810 else
811 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
812
813 return true;
814}
815
c839ff24
PS		 816static int
817smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
818 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
819{
820 __le64 eof = cpu_to_le64(size);
3d1a3745
SF		 821 struct inode *inode;
822
823 /*
824 * If extending file more than one page make sparse. Many Linux fs
825 * make files sparse by default when extending via ftruncate
826 */
2b0143b5 827 inode = d_inode(cfile->dentry);
3d1a3745
SF		 828
829 if (!set_alloc && (size > inode->i_size + 8192)) {
3d1a3745 830 __u8 set_sparse = 1;
d43cc793
SF		 831
832 /* whether set sparse succeeds or not, extend the file */
833 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
3d1a3745
SF		 834 }
835
c839ff24 836 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
f29ebb47 837 cfile->fid.volatile_fid, cfile->pid, &eof, false);
c839ff24
PS		 838}
839
02b16665
SF		 840static int
841smb2_duplicate_extents(const unsigned int xid,
842 struct cifsFileInfo *srcfile,
843 struct cifsFileInfo *trgtfile, u64 src_off,
844 u64 len, u64 dest_off)
845{
846 int rc;
847 unsigned int ret_data_len;
02b16665
SF		 848 struct duplicate_extents_to_file dup_ext_buf;
849 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
850
851 /* server fileays advertise duplicate extent support with this flag */
852 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
853 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
854 return -EOPNOTSUPP;
855
856 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
857 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
858 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
859 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
860 dup_ext_buf.ByteCount = cpu_to_le64(len);
861 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
862 src_off, dest_off, len);
863
864 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
865 if (rc)
866 goto duplicate_extents_out;
867
868 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
869 trgtfile->fid.volatile_fid,
870 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
51146625
AA		 871 true /* is_fsctl */, false /* use_ipc */,
872 (char *)&dup_ext_buf,
02b16665 873 sizeof(struct duplicate_extents_to_file),
24df1483 874 NULL,
02b16665
SF		 875 &ret_data_len);
876
877 if (ret_data_len > 0)
878 cifs_dbg(FYI, "non-zero response length in duplicate extents");
879
880duplicate_extents_out:
881 return rc;
882}
02b16665 883
64a5cfa6
SF		 884static int
885smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
886 struct cifsFileInfo *cfile)
887{
888 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
889 cfile->fid.volatile_fid);
890}
891
b3152e2c
SF		 892static int
893smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
894 struct cifsFileInfo *cfile)
895{
896 struct fsctl_set_integrity_information_req integr_info;
b3152e2c
SF		 897 unsigned int ret_data_len;
898
899 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
900 integr_info.Flags = 0;
901 integr_info.Reserved = 0;
902
903 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
904 cfile->fid.volatile_fid,
905 FSCTL_SET_INTEGRITY_INFORMATION,
51146625
AA		 906 true /* is_fsctl */, false /* use_ipc */,
907 (char *)&integr_info,
b3152e2c 908 sizeof(struct fsctl_set_integrity_information_req),
24df1483 909 NULL,
b3152e2c
SF		 910 &ret_data_len);
911
912}
913
834170c8
SF		 914static int
915smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
916 struct cifsFileInfo *cfile, void __user *ioc_buf)
917{
918 char *retbuf = NULL;
919 unsigned int ret_data_len = 0;
920 int rc;
921 struct smb_snapshot_array snapshot_in;
922
923 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
924 cfile->fid.volatile_fid,
925 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
51146625
AA		 926 true /* is_fsctl */, false /* use_ipc */,
927 NULL, 0 /* no input data */,
834170c8
SF		 928 (char **)&retbuf,
929 &ret_data_len);
930 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
931 rc, ret_data_len);
932 if (rc)
933 return rc;
934
935 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
936 /* Fixup buffer */
937 if (copy_from_user(&snapshot_in, ioc_buf,
938 sizeof(struct smb_snapshot_array))) {
939 rc = -EFAULT;
940 kfree(retbuf);
941 return rc;
942 }
943 if (snapshot_in.snapshot_array_size < sizeof(struct smb_snapshot_array)) {
944 rc = -ERANGE;
0e5c7955 945 kfree(retbuf);
834170c8
SF		 946 return rc;
947 }
948
949 if (ret_data_len > snapshot_in.snapshot_array_size)
950 ret_data_len = snapshot_in.snapshot_array_size;
951
952 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
953 rc = -EFAULT;
954 }
955
956 kfree(retbuf);
957 return rc;
958}
959
d324f08d
PS		 960static int
961smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
962 const char *path, struct cifs_sb_info *cifs_sb,
963 struct cifs_fid *fid, __u16 search_flags,
964 struct cifs_search_info *srch_inf)
965{
966 __le16 *utf16_path;
967 int rc;
2e44b288 968 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047 969 struct cifs_open_parms oparms;
d324f08d
PS		 970
971 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
972 if (!utf16_path)
973 return -ENOMEM;
974
064f6047
PS		 975 oparms.tcon = tcon;
976 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
977 oparms.disposition = FILE_OPEN;
978 oparms.create_options = 0;
979 oparms.fid = fid;
9cbc0b73 980 oparms.reconnect = false;
064f6047 981
b42bf888 982 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
d324f08d
PS		 983 kfree(utf16_path);
984 if (rc) {
dcd87838 985 cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
d324f08d
PS		 986 return rc;
987 }
988
989 srch_inf->entries_in_buffer = 0;
990 srch_inf->index_of_last_entry = 0;
d324f08d 991
064f6047
PS		 992 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
993 fid->volatile_fid, 0, srch_inf);
d324f08d 994 if (rc) {
dcd87838 995 cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
064f6047 996 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
d324f08d
PS		 997 }
998 return rc;
999}
1000
1001static int
1002smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
1003 struct cifs_fid *fid, __u16 search_flags,
1004 struct cifs_search_info *srch_inf)
1005{
1006 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
1007 fid->volatile_fid, 0, srch_inf);
1008}
1009
1010static int
1011smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1012 struct cifs_fid *fid)
1013{
1014 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1015}
1016
2e44b288
PS		 1017/*
1018* If we negotiate SMB2 protocol and get STATUS_PENDING - update
1019* the number of credits and return true. Otherwise - return false.
1020*/
1021static bool
1022smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
1023{
31473fc4 1024 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
2e44b288 1025
31473fc4 1026 if (shdr->Status != STATUS_PENDING)
2e44b288
PS		 1027 return false;
1028
1029 if (!length) {
1030 spin_lock(&server->req_lock);
31473fc4 1031 server->credits += le16_to_cpu(shdr->CreditRequest);
2e44b288
PS		 1032 spin_unlock(&server->req_lock);
1033 wake_up(&server->request_q);
1034 }
1035
1036 return true;
1037}
1038
511c54a2
PS		 1039static bool
1040smb2_is_session_expired(char *buf)
1041{
1042 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
1043
1044 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED)
1045 return false;
1046
1047 cifs_dbg(FYI, "Session expired\n");
1048 return true;
1049}
1050
983c88a4
PS		 1051static int
1052smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1053 struct cifsInodeInfo *cinode)
1054{
0822f514
PS		 1055 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1056 return SMB2_lease_break(0, tcon, cinode->lease_key,
1057 smb2_get_lease_state(cinode));
1058
983c88a4
PS		 1059 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1060 fid->volatile_fid,
18cceb6a 1061 CIFS_CACHE_READ(cinode) ? 1 : 0);
983c88a4
PS		 1062}
1063
6fc05c25
PS		 1064static int
1065smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1066 struct kstatfs *buf)
1067{
1068 int rc;
6fc05c25
PS		 1069 __le16 srch_path = 0; /* Null - open root of share */
1070 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 1071 struct cifs_open_parms oparms;
1072 struct cifs_fid fid;
1073
1074 oparms.tcon = tcon;
1075 oparms.desired_access = FILE_READ_ATTRIBUTES;
1076 oparms.disposition = FILE_OPEN;
1077 oparms.create_options = 0;
1078 oparms.fid = &fid;
9cbc0b73 1079 oparms.reconnect = false;
6fc05c25 1080
b42bf888 1081 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
6fc05c25
PS		 1082 if (rc)
1083 return rc;
1084 buf->f_type = SMB2_MAGIC_NUMBER;
064f6047
PS		 1085 rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
1086 buf);
1087 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
6fc05c25
PS		 1088 return rc;
1089}
1090
027e8eec
PS		 1091static bool
1092smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
1093{
1094 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
1095 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
1096}
1097
f7ba7fe6
PS		 1098static int
1099smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
1100 __u64 length, __u32 type, int lock, int unlock, bool wait)
1101{
1102 if (unlock && !lock)
1103 type = SMB2_LOCKFLAG_UNLOCK;
1104 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
1105 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
1106 current->tgid, length, offset, type, wait);
1107}
1108
b8c32dbb
PS		 1109static void
1110smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
1111{
1112 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
1113}
1114
1115static void
1116smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
1117{
1118 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
1119}
1120
1121static void
1122smb2_new_lease_key(struct cifs_fid *fid)
1123{
fa70b87c 1124 generate_random_uuid(fid->lease_key);
b8c32dbb
PS		 1125}
1126
9d49640a
AA		 1127static int
1128smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
1129 const char *search_name,
1130 struct dfs_info3_param **target_nodes,
1131 unsigned int *num_of_nodes,
1132 const struct nls_table *nls_codepage, int remap)
1133{
1134 int rc;
1135 __le16 *utf16_path = NULL;
1136 int utf16_path_len = 0;
1137 struct cifs_tcon *tcon;
1138 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
1139 struct get_dfs_referral_rsp *dfs_rsp = NULL;
1140 u32 dfs_req_size = 0, dfs_rsp_size = 0;
1141
1142 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
1143
1144 /*
1145 * Use any tcon from the current session. Here, the first one.
1146 */
1147 spin_lock(&cifs_tcp_ses_lock);
1148 tcon = list_first_entry_or_null(&ses->tcon_list, struct cifs_tcon,
1149 tcon_list);
1150 if (tcon)
1151 tcon->tc_count++;
1152 spin_unlock(&cifs_tcp_ses_lock);
1153
1154 if (!tcon) {
1155 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
1156 ses);
1157 rc = -ENOTCONN;
1158 goto out;
1159 }
1160
1161 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
1162 &utf16_path_len,
1163 nls_codepage, remap);
1164 if (!utf16_path) {
1165 rc = -ENOMEM;
1166 goto out;
1167 }
1168
1169 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
1170 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
1171 if (!dfs_req) {
1172 rc = -ENOMEM;
1173 goto out;
1174 }
1175
1176 /* Highest DFS referral version understood */
1177 dfs_req->MaxReferralLevel = DFS_VERSION;
1178
1179 /* Path to resolve in an UTF-16 null-terminated string */
1180 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
1181
1182 do {
1183 /* try first with IPC */
1184 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1185 FSCTL_DFS_GET_REFERRALS,
1186 true /* is_fsctl */, true /* use_ipc */,
1187 (char *)dfs_req, dfs_req_size,
1188 (char **)&dfs_rsp, &dfs_rsp_size);
1189 if (rc == -ENOTCONN) {
1190 /* try with normal tcon */
1191 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1192 FSCTL_DFS_GET_REFERRALS,
1193 true /* is_fsctl */, false /*use_ipc*/,
1194 (char *)dfs_req, dfs_req_size,
1195 (char **)&dfs_rsp, &dfs_rsp_size);
1196 }
1197 } while (rc == -EAGAIN);
1198
1199 if (rc) {
1200 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
1201 goto out;
1202 }
1203
1204 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
1205 num_of_nodes, target_nodes,
1206 nls_codepage, remap, search_name,
1207 true /* is_unicode */);
1208 if (rc) {
1209 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
1210 goto out;
1211 }
1212
1213 out:
1214 if (tcon) {
1215 spin_lock(&cifs_tcp_ses_lock);
1216 tcon->tc_count--;
1217 spin_unlock(&cifs_tcp_ses_lock);
1218 }
1219 kfree(utf16_path);
1220 kfree(dfs_req);
1221 kfree(dfs_rsp);
1222 return rc;
1223}
7893242e
PS		 1224#define SMB2_SYMLINK_STRUCT_SIZE \
1225 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
1226
b42bf888
PS		 1227static int
1228smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
1229 const char *full_path, char **target_path,
1230 struct cifs_sb_info *cifs_sb)
1231{
1232 int rc;
1233 __le16 *utf16_path;
1234 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1235 struct cifs_open_parms oparms;
1236 struct cifs_fid fid;
1237 struct smb2_err_rsp *err_buf = NULL;
1238 struct smb2_symlink_err_rsp *symlink;
7893242e
PS		 1239 unsigned int sub_len;
1240 unsigned int sub_offset;
1241 unsigned int print_len;
1242 unsigned int print_offset;
b42bf888
PS		 1243
1244 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
1245
1246 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
1247 if (!utf16_path)
1248 return -ENOMEM;
1249
1250 oparms.tcon = tcon;
1251 oparms.desired_access = FILE_READ_ATTRIBUTES;
1252 oparms.disposition = FILE_OPEN;
1253 oparms.create_options = 0;
1254 oparms.fid = &fid;
1255 oparms.reconnect = false;
1256
1257 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf);
1258
1259 if (!rc || !err_buf) {
1260 kfree(utf16_path);
1261 return -ENOENT;
1262 }
7893242e
PS		 1263
1264 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1265 get_rfc1002_length(err_buf) + 4 < SMB2_SYMLINK_STRUCT_SIZE) {
1266 kfree(utf16_path);
1267 return -ENOENT;
1268 }
1269
b42bf888
PS		 1270 /* open must fail on symlink - reset rc */
1271 rc = 0;
1272 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
1273 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
1274 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
7893242e
PS		 1275 print_len = le16_to_cpu(symlink->PrintNameLength);
1276 print_offset = le16_to_cpu(symlink->PrintNameOffset);
1277
1278 if (get_rfc1002_length(err_buf) + 4 <
1279 SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
1280 kfree(utf16_path);
1281 return -ENOENT;
1282 }
1283
1284 if (get_rfc1002_length(err_buf) + 4 <
1285 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
1286 kfree(utf16_path);
1287 return -ENOENT;
1288 }
1289
b42bf888
PS		 1290 *target_path = cifs_strndup_from_utf16(
1291 (char *)symlink->PathBuffer + sub_offset,
1292 sub_len, true, cifs_sb->local_nls);
1293 if (!(*target_path)) {
1294 kfree(utf16_path);
1295 return -ENOMEM;
1296 }
1297 convert_delimiter(*target_path, '/');
1298 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
1299 kfree(utf16_path);
1300 return rc;
1301}
1302
84908426 1303#ifdef CONFIG_CIFS_ACL
2f1afe25
SP		 1304static struct cifs_ntsd *
1305get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
1306 const struct cifs_fid *cifsfid, u32 *pacllen)
1307{
1308 struct cifs_ntsd *pntsd = NULL;
1309 unsigned int xid;
1310 int rc = -EOPNOTSUPP;
1311 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1312
1313 if (IS_ERR(tlink))
1314 return ERR_CAST(tlink);
1315
1316 xid = get_xid();
1317 cifs_dbg(FYI, "trying to get acl\n");
1318
1319 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
1320 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
1321 free_xid(xid);
1322
1323 cifs_put_tlink(tlink);
1324
1325 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1326 if (rc)
1327 return ERR_PTR(rc);
1328 return pntsd;
1329
1330}
1331
1332static struct cifs_ntsd *
1333get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
1334 const char *path, u32 *pacllen)
1335{
1336 struct cifs_ntsd *pntsd = NULL;
1337 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1338 unsigned int xid;
1339 int rc;
1340 struct cifs_tcon *tcon;
1341 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1342 struct cifs_fid fid;
1343 struct cifs_open_parms oparms;
1344 __le16 *utf16_path;
1345
1346 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
1347 if (IS_ERR(tlink))
1348 return ERR_CAST(tlink);
1349
1350 tcon = tlink_tcon(tlink);
1351 xid = get_xid();
1352
1353 if (backup_cred(cifs_sb))
709340a0 1354 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2f1afe25
SP		 1355 else
1356 oparms.create_options = 0;
1357
1358 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1359 if (!utf16_path)
1360 return ERR_PTR(-ENOMEM);
1361
1362 oparms.tcon = tcon;
1363 oparms.desired_access = READ_CONTROL;
1364 oparms.disposition = FILE_OPEN;
1365 oparms.fid = &fid;
1366 oparms.reconnect = false;
1367
1368 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
1369 kfree(utf16_path);
1370 if (!rc) {
1371 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
1372 fid.volatile_fid, (void **)&pntsd, pacllen);
1373 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1374 }
1375
1376 cifs_put_tlink(tlink);
1377 free_xid(xid);
1378
1379 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1380 if (rc)
1381 return ERR_PTR(rc);
1382 return pntsd;
1383}
1384
366ed846
SP		 1385#ifdef CONFIG_CIFS_ACL
1386static int
1387set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
1388 struct inode *inode, const char *path, int aclflag)
1389{
1390 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1391 unsigned int xid;
1392 int rc, access_flags = 0;
1393 struct cifs_tcon *tcon;
1394 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1395 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1396 struct cifs_fid fid;
1397 struct cifs_open_parms oparms;
1398 __le16 *utf16_path;
1399
1400 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
1401 if (IS_ERR(tlink))
1402 return PTR_ERR(tlink);
1403
1404 tcon = tlink_tcon(tlink);
1405 xid = get_xid();
1406
1407 if (backup_cred(cifs_sb))
1408 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1409 else
1410 oparms.create_options = 0;
1411
1412 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
1413 access_flags = WRITE_OWNER;
1414 else
1415 access_flags = WRITE_DAC;
1416
1417 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1418 if (!utf16_path)
1419 return -ENOMEM;
1420
1421 oparms.tcon = tcon;
1422 oparms.desired_access = access_flags;
1423 oparms.disposition = FILE_OPEN;
1424 oparms.path = path;
1425 oparms.fid = &fid;
1426 oparms.reconnect = false;
1427
1428 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
1429 kfree(utf16_path);
1430 if (!rc) {
1431 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
1432 fid.volatile_fid, pnntsd, acllen, aclflag);
1433 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1434 }
1435
1436 cifs_put_tlink(tlink);
1437 free_xid(xid);
1438 return rc;
1439}
1440#endif /* CIFS_ACL */
1441
2f1afe25
SP		 1442/* Retrieve an ACL from the server */
1443static struct cifs_ntsd *
1444get_smb2_acl(struct cifs_sb_info *cifs_sb,
1445 struct inode *inode, const char *path,
1446 u32 *pacllen)
1447{
1448 struct cifs_ntsd *pntsd = NULL;
1449 struct cifsFileInfo *open_file = NULL;
1450
1451 if (inode)
1452 open_file = find_readable_file(CIFS_I(inode), true);
1453 if (!open_file)
1454 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
1455
1456 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
1457 cifsFileInfo_put(open_file);
1458 return pntsd;
1459}
84908426 1460#endif
2f1afe25 1461
30175628
SF		 1462static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
1463 loff_t offset, loff_t len, bool keep_size)
1464{
1465 struct inode *inode;
1466 struct cifsInodeInfo *cifsi;
1467 struct cifsFileInfo *cfile = file->private_data;
1468 struct file_zero_data_information fsctl_buf;
1469 long rc;
1470 unsigned int xid;
1471
1472 xid = get_xid();
1473
2b0143b5 1474 inode = d_inode(cfile->dentry);
30175628
SF		 1475 cifsi = CIFS_I(inode);
1476
1477 /* if file not oplocked can't be sure whether asking to extend size */
1478 if (!CIFS_CACHE_READ(cifsi))
1479 if (keep_size == false)
1480 return -EOPNOTSUPP;
1481
2bb93d24 1482 /*
30175628
SF		 1483 * Must check if file sparse since fallocate -z (zero range) assumes
1484 * non-sparse allocation
1485 */
1486 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE))
1487 return -EOPNOTSUPP;
1488
1489 /*
1490 * need to make sure we are not asked to extend the file since the SMB3
1491 * fsctl does not change the file size. In the future we could change
1492 * this to zero the first part of the range then set the file size
1493 * which for a non sparse file would zero the newly extended range
1494 */
1495 if (keep_size == false)
1496 if (i_size_read(inode) < offset + len)
1497 return -EOPNOTSUPP;
1498
1499 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1500
1501 fsctl_buf.FileOffset = cpu_to_le64(offset);
1502 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1503
1504 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1505 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
51146625
AA		 1506 true /* is_fctl */, false /* use_ipc */,
1507 (char *)&fsctl_buf,
30175628
SF		 1508 sizeof(struct file_zero_data_information), NULL, NULL);
1509 free_xid(xid);
1510 return rc;
1511}
1512
31742c5a
SF		 1513static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
1514 loff_t offset, loff_t len)
1515{
1516 struct inode *inode;
1517 struct cifsInodeInfo *cifsi;
1518 struct cifsFileInfo *cfile = file->private_data;
1519 struct file_zero_data_information fsctl_buf;
1520 long rc;
1521 unsigned int xid;
1522 __u8 set_sparse = 1;
1523
1524 xid = get_xid();
1525
2b0143b5 1526 inode = d_inode(cfile->dentry);
31742c5a
SF		 1527 cifsi = CIFS_I(inode);
1528
1529 /* Need to make file sparse, if not already, before freeing range. */
1530 /* Consider adding equivalent for compressed since it could also work */
1531 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse))
1532 return -EOPNOTSUPP;
1533
1534 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1535
1536 fsctl_buf.FileOffset = cpu_to_le64(offset);
1537 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1538
1539 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1540 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
51146625
AA		 1541 true /* is_fctl */, false /* use_ipc */,
1542 (char *)&fsctl_buf,
31742c5a
SF		 1543 sizeof(struct file_zero_data_information), NULL, NULL);
1544 free_xid(xid);
1545 return rc;
1546}
1547
9ccf3216
SF		 1548static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
1549 loff_t off, loff_t len, bool keep_size)
1550{
1551 struct inode *inode;
1552 struct cifsInodeInfo *cifsi;
1553 struct cifsFileInfo *cfile = file->private_data;
1554 long rc = -EOPNOTSUPP;
1555 unsigned int xid;
1556
1557 xid = get_xid();
1558
2b0143b5 1559 inode = d_inode(cfile->dentry);
9ccf3216
SF		 1560 cifsi = CIFS_I(inode);
1561
1562 /* if file not oplocked can't be sure whether asking to extend size */
1563 if (!CIFS_CACHE_READ(cifsi))
1564 if (keep_size == false)
1565 return -EOPNOTSUPP;
1566
1567 /*
1568 * Files are non-sparse by default so falloc may be a no-op
1569 * Must check if file sparse. If not sparse, and not extending
1570 * then no need to do anything since file already allocated
1571 */
1572 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
1573 if (keep_size == true)
1574 return 0;
1575 /* check if extending file */
1576 else if (i_size_read(inode) >= off + len)
1577 /* not extending file and already not sparse */
1578 return 0;
1579 /* BB: in future add else clause to extend file */
1580 else
1581 return -EOPNOTSUPP;
1582 }
1583
1584 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
1585 /*
1586 * Check if falloc starts within first few pages of file
1587 * and ends within a few pages of the end of file to
1588 * ensure that most of file is being forced to be
1589 * fallocated now. If so then setting whole file sparse
1590 * ie potentially making a few extra pages at the beginning
1591 * or end of the file non-sparse via set_sparse is harmless.
1592 */
1593 if ((off > 8192) || (off + len + 8192 < i_size_read(inode)))
1594 return -EOPNOTSUPP;
1595
1596 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
1597 }
1598 /* BB: else ... in future add code to extend file and set sparse */
1599
1600
1601 free_xid(xid);
1602 return rc;
1603}
1604
1605
31742c5a
SF		 1606static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
1607 loff_t off, loff_t len)
1608{
1609 /* KEEP_SIZE already checked for by do_fallocate */
1610 if (mode & FALLOC_FL_PUNCH_HOLE)
1611 return smb3_punch_hole(file, tcon, off, len);
30175628
SF		 1612 else if (mode & FALLOC_FL_ZERO_RANGE) {
1613 if (mode & FALLOC_FL_KEEP_SIZE)
1614 return smb3_zero_range(file, tcon, off, len, true);
1615 return smb3_zero_range(file, tcon, off, len, false);
9ccf3216
SF		 1616 } else if (mode == FALLOC_FL_KEEP_SIZE)
1617 return smb3_simple_falloc(file, tcon, off, len, true);
1618 else if (mode == 0)
1619 return smb3_simple_falloc(file, tcon, off, len, false);
31742c5a
SF		 1620
1621 return -EOPNOTSUPP;
1622}
1623
c11f1df5
SP		 1624static void
1625smb2_downgrade_oplock(struct TCP_Server_Info *server,
1626 struct cifsInodeInfo *cinode, bool set_level2)
1627{
1628 if (set_level2)
1629 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
1630 0, NULL);
1631 else
1632 server->ops->set_oplock_level(cinode, 0, 0, NULL);
1633}
1634
53ef1016 1635static void
42873b0a
PS		 1636smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1637 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 1638{
1639 oplock &= 0xFF;
1640 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1641 return;
1642 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
42873b0a 1643 cinode->oplock = CIFS_CACHE_RHW_FLG;
53ef1016
PS		 1644 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
1645 &cinode->vfs_inode);
1646 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
42873b0a 1647 cinode->oplock = CIFS_CACHE_RW_FLG;
53ef1016
PS		 1648 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
1649 &cinode->vfs_inode);
1650 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
1651 cinode->oplock = CIFS_CACHE_READ_FLG;
1652 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
1653 &cinode->vfs_inode);
1654 } else
1655 cinode->oplock = 0;
1656}
1657
1658static void
42873b0a
PS		 1659smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1660 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 1661{
1662 char message[5] = {0};
1663
1664 oplock &= 0xFF;
1665 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1666 return;
1667
1668 cinode->oplock = 0;
1669 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
1670 cinode->oplock |= CIFS_CACHE_READ_FLG;
1671 strcat(message, "R");
1672 }
1673 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
1674 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
1675 strcat(message, "H");
1676 }
1677 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
1678 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
1679 strcat(message, "W");
1680 }
1681 if (!cinode->oplock)
1682 strcat(message, "None");
1683 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
1684 &cinode->vfs_inode);
1685}
1686
42873b0a
PS		 1687static void
1688smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1689 unsigned int epoch, bool *purge_cache)
1690{
1691 unsigned int old_oplock = cinode->oplock;
1692
1693 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
1694
1695 if (purge_cache) {
1696 *purge_cache = false;
1697 if (old_oplock == CIFS_CACHE_READ_FLG) {
1698 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
1699 (epoch - cinode->epoch > 0))
1700 *purge_cache = true;
1701 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1702 (epoch - cinode->epoch > 1))
1703 *purge_cache = true;
1704 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1705 (epoch - cinode->epoch > 1))
1706 *purge_cache = true;
1707 else if (cinode->oplock == 0 &&
1708 (epoch - cinode->epoch > 0))
1709 *purge_cache = true;
1710 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
1711 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1712 (epoch - cinode->epoch > 0))
1713 *purge_cache = true;
1714 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1715 (epoch - cinode->epoch > 1))
1716 *purge_cache = true;
1717 }
1718 cinode->epoch = epoch;
1719 }
1720}
1721
53ef1016
PS		 1722static bool
1723smb2_is_read_op(__u32 oplock)
1724{
1725 return oplock == SMB2_OPLOCK_LEVEL_II;
1726}
1727
1728static bool
1729smb21_is_read_op(__u32 oplock)
1730{
1731 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
1732 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
1733}
1734
f047390a
PS		 1735static __le32
1736map_oplock_to_lease(u8 oplock)
1737{
1738 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
1739 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
1740 else if (oplock == SMB2_OPLOCK_LEVEL_II)
1741 return SMB2_LEASE_READ_CACHING;
1742 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
1743 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
1744 SMB2_LEASE_WRITE_CACHING;
1745 return 0;
1746}
1747
a41a28bd
PS		 1748static char *
1749smb2_create_lease_buf(u8 *lease_key, u8 oplock)
1750{
1751 struct create_lease *buf;
1752
1753 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
1754 if (!buf)
1755 return NULL;
1756
1757 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1758 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
f047390a 1759 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
a41a28bd
PS		 1760
1761 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1762 (struct create_lease, lcontext));
1763 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
1764 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1765 (struct create_lease, Name));
1766 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 1767 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
a41a28bd
PS		 1768 buf->Name[0] = 'R';
1769 buf->Name[1] = 'q';
1770 buf->Name[2] = 'L';
1771 buf->Name[3] = 's';
1772 return (char *)buf;
1773}
1774
f047390a
PS		 1775static char *
1776smb3_create_lease_buf(u8 *lease_key, u8 oplock)
1777{
1778 struct create_lease_v2 *buf;
1779
1780 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
1781 if (!buf)
1782 return NULL;
1783
1784 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1785 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
1786 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
1787
1788 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1789 (struct create_lease_v2, lcontext));
1790 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
1791 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1792 (struct create_lease_v2, Name));
1793 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 1794 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
f047390a
PS		 1795 buf->Name[0] = 'R';
1796 buf->Name[1] = 'q';
1797 buf->Name[2] = 'L';
1798 buf->Name[3] = 's';
1799 return (char *)buf;
1800}
1801
b5c7cde3 1802static __u8
42873b0a 1803smb2_parse_lease_buf(void *buf, unsigned int *epoch)
b5c7cde3
PS		 1804{
1805 struct create_lease *lc = (struct create_lease *)buf;
1806
42873b0a 1807 *epoch = 0; /* not used */
b5c7cde3
PS		 1808 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1809 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1810 return le32_to_cpu(lc->lcontext.LeaseState);
1811}
1812
f047390a 1813static __u8
42873b0a 1814smb3_parse_lease_buf(void *buf, unsigned int *epoch)
f047390a
PS		 1815{
1816 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
1817
42873b0a 1818 *epoch = le16_to_cpu(lc->lcontext.Epoch);
f047390a
PS		 1819 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1820 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1821 return le32_to_cpu(lc->lcontext.LeaseState);
1822}
1823
7f6c5008
PS		 1824static unsigned int
1825smb2_wp_retry_size(struct inode *inode)
1826{
1827 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
1828 SMB2_MAX_BUFFER_SIZE);
1829}
1830
52755808
PS		 1831static bool
1832smb2_dir_needs_close(struct cifsFileInfo *cfile)
1833{
1834 return !cfile->invalidHandle;
1835}
1836
026e93dc
PS		 1837static void
1838fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, struct smb_rqst *old_rq)
1839{
1840 struct smb2_sync_hdr *shdr =
1841 (struct smb2_sync_hdr *)old_rq->rq_iov[1].iov_base;
1842 unsigned int orig_len = get_rfc1002_length(old_rq->rq_iov[0].iov_base);
1843
1844 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
1845 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
1846 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
1847 tr_hdr->Flags = cpu_to_le16(0x01);
1848 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
1849 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
1850 inc_rfc1001_len(tr_hdr, sizeof(struct smb2_transform_hdr) - 4);
1851 inc_rfc1001_len(tr_hdr, orig_len);
1852}
1853
1854static struct scatterlist *
1855init_sg(struct smb_rqst *rqst, u8 *sign)
1856{
1857 unsigned int sg_len = rqst->rq_nvec + rqst->rq_npages + 1;
1858 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24;
1859 struct scatterlist *sg;
1860 unsigned int i;
1861 unsigned int j;
1862
1863 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
1864 if (!sg)
1865 return NULL;
1866
1867 sg_init_table(sg, sg_len);
1868 sg_set_buf(&sg[0], rqst->rq_iov[0].iov_base + 24, assoc_data_len);
1869 for (i = 1; i < rqst->rq_nvec; i++)
1870 sg_set_buf(&sg[i], rqst->rq_iov[i].iov_base,
1871 rqst->rq_iov[i].iov_len);
1872 for (j = 0; i < sg_len - 1; i++, j++) {
1873 unsigned int len = (j < rqst->rq_npages - 1) ? rqst->rq_pagesz
1874 : rqst->rq_tailsz;
1875 sg_set_page(&sg[i], rqst->rq_pages[j], len, 0);
1876 }
1877 sg_set_buf(&sg[sg_len - 1], sign, SMB2_SIGNATURE_SIZE);
1878 return sg;
1879}
1880
1881struct cifs_crypt_result {
1882 int err;
1883 struct completion completion;
1884};
1885
1886static void cifs_crypt_complete(struct crypto_async_request *req, int err)
1887{
1888 struct cifs_crypt_result *res = req->data;
1889
1890 if (err == -EINPROGRESS)
1891 return;
1892
1893 res->err = err;
1894 complete(&res->completion);
1895}
1896
61cfac6f
PS		 1897static int
1898smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
1899{
1900 struct cifs_ses *ses;
1901 u8 *ses_enc_key;
1902
1903 spin_lock(&cifs_tcp_ses_lock);
1904 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
1905 if (ses->Suid != ses_id)
1906 continue;
1907 ses_enc_key = enc ? ses->smb3encryptionkey :
1908 ses->smb3decryptionkey;
1909 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
1910 spin_unlock(&cifs_tcp_ses_lock);
1911 return 0;
1912 }
1913 spin_unlock(&cifs_tcp_ses_lock);
1914
1915 return 1;
1916}
026e93dc
PS		 1917/*
1918 * Encrypt or decrypt @rqst message. @rqst has the following format:
1919 * iov[0] - transform header (associate data),
1920 * iov[1-N] and pages - data to encrypt.
1921 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
1922 * untouched.
1923 */
1924static int
1925crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc)
1926{
1927 struct smb2_transform_hdr *tr_hdr =
1928 (struct smb2_transform_hdr *)rqst->rq_iov[0].iov_base;
1929 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24;
026e93dc
PS		 1930 int rc = 0;
1931 struct scatterlist *sg;
1932 u8 sign[SMB2_SIGNATURE_SIZE] = {};
61cfac6f 1933 u8 key[SMB3_SIGN_KEY_SIZE];
026e93dc
PS		 1934 struct aead_request *req;
1935 char *iv;
1936 unsigned int iv_len;
1937 struct cifs_crypt_result result = {0, };
1938 struct crypto_aead *tfm;
1939 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
1940
1941 init_completion(&result.completion);
1942
61cfac6f
PS		 1943 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
1944 if (rc) {
1945 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
1946 enc ? "en" : "de");
026e93dc
PS		 1947 return 0;
1948 }
1949
1950 rc = smb3_crypto_aead_allocate(server);
1951 if (rc) {
1952 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
1953 return rc;
1954 }
1955
1956 tfm = enc ? server->secmech.ccmaesencrypt :
1957 server->secmech.ccmaesdecrypt;
61cfac6f 1958 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
026e93dc
PS		 1959 if (rc) {
1960 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
1961 return rc;
1962 }
1963
1964 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
1965 if (rc) {
1966 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
1967 return rc;
1968 }
1969
1970 req = aead_request_alloc(tfm, GFP_KERNEL);
1971 if (!req) {
1972 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
1973 return -ENOMEM;
1974 }
1975
1976 if (!enc) {
1977 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
1978 crypt_len += SMB2_SIGNATURE_SIZE;
1979 }
1980
1981 sg = init_sg(rqst, sign);
1982 if (!sg) {
517a6e43
CJ		 1983 cifs_dbg(VFS, "%s: Failed to init sg", __func__);
1984 rc = -ENOMEM;
026e93dc
PS		 1985 goto free_req;
1986 }
1987
1988 iv_len = crypto_aead_ivsize(tfm);
1989 iv = kzalloc(iv_len, GFP_KERNEL);
1990 if (!iv) {
1991 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
517a6e43 1992 rc = -ENOMEM;
026e93dc
PS		 1993 goto free_sg;
1994 }
1995 iv[0] = 3;
1996 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
1997
1998 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
1999 aead_request_set_ad(req, assoc_data_len);
2000
2001 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
2002 cifs_crypt_complete, &result);
2003
2004 rc = enc ? crypto_aead_encrypt(req) : crypto_aead_decrypt(req);
2005
2006 if (rc == -EINPROGRESS || rc == -EBUSY) {
2007 wait_for_completion(&result.completion);
2008 rc = result.err;
2009 }
2010
2011 if (!rc && enc)
2012 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
2013
2014 kfree(iv);
2015free_sg:
2016 kfree(sg);
2017free_req:
2018 kfree(req);
2019 return rc;
2020}
2021
2022static int
2023smb3_init_transform_rq(struct TCP_Server_Info *server, struct smb_rqst *new_rq,
2024 struct smb_rqst *old_rq)
2025{
2026 struct kvec *iov;
2027 struct page **pages;
2028 struct smb2_transform_hdr *tr_hdr;
2029 unsigned int npages = old_rq->rq_npages;
2030 int i;
2031 int rc = -ENOMEM;
2032
2033 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
2034 if (!pages)
2035 return rc;
2036
2037 new_rq->rq_pages = pages;
2038 new_rq->rq_npages = old_rq->rq_npages;
2039 new_rq->rq_pagesz = old_rq->rq_pagesz;
2040 new_rq->rq_tailsz = old_rq->rq_tailsz;
2041
2042 for (i = 0; i < npages; i++) {
2043 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2044 if (!pages[i])
2045 goto err_free_pages;
2046 }
2047
2048 iov = kmalloc_array(old_rq->rq_nvec, sizeof(struct kvec), GFP_KERNEL);
2049 if (!iov)
2050 goto err_free_pages;
2051
2052 /* copy all iovs from the old except the 1st one (rfc1002 length) */
2053 memcpy(&iov[1], &old_rq->rq_iov[1],
2054 sizeof(struct kvec) * (old_rq->rq_nvec - 1));
2055 new_rq->rq_iov = iov;
2056 new_rq->rq_nvec = old_rq->rq_nvec;
2057
2058 tr_hdr = kmalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL);
2059 if (!tr_hdr)
2060 goto err_free_iov;
2061
2062 /* fill the 1st iov with a transform header */
2063 fill_transform_hdr(tr_hdr, old_rq);
2064 new_rq->rq_iov[0].iov_base = tr_hdr;
2065 new_rq->rq_iov[0].iov_len = sizeof(struct smb2_transform_hdr);
2066
2067 /* copy pages form the old */
2068 for (i = 0; i < npages; i++) {
2069 char *dst = kmap(new_rq->rq_pages[i]);
2070 char *src = kmap(old_rq->rq_pages[i]);
2071 unsigned int len = (i < npages - 1) ? new_rq->rq_pagesz :
2072 new_rq->rq_tailsz;
2073 memcpy(dst, src, len);
2074 kunmap(new_rq->rq_pages[i]);
2075 kunmap(old_rq->rq_pages[i]);
2076 }
2077
2078 rc = crypt_message(server, new_rq, 1);
2079 cifs_dbg(FYI, "encrypt message returned %d", rc);
2080 if (rc)
2081 goto err_free_tr_hdr;
2082
2083 return rc;
2084
2085err_free_tr_hdr:
2086 kfree(tr_hdr);
2087err_free_iov:
2088 kfree(iov);
2089err_free_pages:
2090 for (i = i - 1; i >= 0; i--)
2091 put_page(pages[i]);
2092 kfree(pages);
2093 return rc;
2094}
2095
2096static void
2097smb3_free_transform_rq(struct smb_rqst *rqst)
2098{
2099 int i = rqst->rq_npages - 1;
2100
2101 for (; i >= 0; i--)
2102 put_page(rqst->rq_pages[i]);
2103 kfree(rqst->rq_pages);
2104 /* free transform header */
2105 kfree(rqst->rq_iov[0].iov_base);
2106 kfree(rqst->rq_iov);
2107}
2108
4326ed2f
PS		 2109static int
2110smb3_is_transform_hdr(void *buf)
2111{
2112 struct smb2_transform_hdr *trhdr = buf;
2113
2114 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
2115}
2116
2117static int
2118decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
2119 unsigned int buf_data_size, struct page **pages,
2120 unsigned int npages, unsigned int page_data_size)
2121{
2122 struct kvec iov[2];
2123 struct smb_rqst rqst = {NULL};
2124 struct smb2_hdr *hdr;
2125 int rc;
2126
2127 iov[0].iov_base = buf;
2128 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
2129 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
2130 iov[1].iov_len = buf_data_size;
2131
2132 rqst.rq_iov = iov;
2133 rqst.rq_nvec = 2;
2134 rqst.rq_pages = pages;
2135 rqst.rq_npages = npages;
2136 rqst.rq_pagesz = PAGE_SIZE;
2137 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
2138
2139 rc = crypt_message(server, &rqst, 0);
2140 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
2141
2142 if (rc)
2143 return rc;
2144
2145 memmove(buf + 4, iov[1].iov_base, buf_data_size);
2146 hdr = (struct smb2_hdr *)buf;
2147 hdr->smb2_buf_length = cpu_to_be32(buf_data_size + page_data_size);
2148 server->total_read = buf_data_size + page_data_size + 4;
2149
2150 return rc;
2151}
2152
c42a6abe
PS		 2153static int
2154read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
2155 unsigned int npages, unsigned int len)
2156{
2157 int i;
2158 int length;
2159
2160 for (i = 0; i < npages; i++) {
2161 struct page *page = pages[i];
2162 size_t n;
2163
2164 n = len;
2165 if (len >= PAGE_SIZE) {
2166 /* enough data to fill the page */
2167 n = PAGE_SIZE;
2168 len -= n;
2169 } else {
2170 zero_user(page, len, PAGE_SIZE - len);
2171 len = 0;
2172 }
2173 length = cifs_read_page_from_socket(server, page, n);
2174 if (length < 0)
2175 return length;
2176 server->total_read += length;
2177 }
2178
2179 return 0;
2180}
2181
2182static int
2183init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
2184 unsigned int cur_off, struct bio_vec **page_vec)
2185{
2186 struct bio_vec *bvec;
2187 int i;
2188
2189 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
2190 if (!bvec)
2191 return -ENOMEM;
2192
2193 for (i = 0; i < npages; i++) {
2194 bvec[i].bv_page = pages[i];
2195 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
2196 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
2197 data_size -= bvec[i].bv_len;
2198 }
2199
2200 if (data_size != 0) {
2201 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
2202 kfree(bvec);
2203 return -EIO;
2204 }
2205
2206 *page_vec = bvec;
2207 return 0;
2208}
2209
4326ed2f
PS		 2210static int
2211handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
2212 char *buf, unsigned int buf_len, struct page **pages,
2213 unsigned int npages, unsigned int page_data_size)
2214{
2215 unsigned int data_offset;
2216 unsigned int data_len;
c42a6abe
PS		 2217 unsigned int cur_off;
2218 unsigned int cur_page_idx;
2219 unsigned int pad_len;
4326ed2f
PS		 2220 struct cifs_readdata *rdata = mid->callback_data;
2221 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
2222 struct bio_vec *bvec = NULL;
2223 struct iov_iter iter;
2224 struct kvec iov;
2225 int length;
2226
2227 if (shdr->Command != SMB2_READ) {
2228 cifs_dbg(VFS, "only big read responses are supported\n");
2229 return -ENOTSUPP;
2230 }
2231
511c54a2
PS		 2232 if (server->ops->is_session_expired &&
2233 server->ops->is_session_expired(buf)) {
2234 cifs_reconnect(server);
2235 wake_up(&server->response_q);
2236 return -1;
2237 }
2238
4326ed2f
PS		 2239 if (server->ops->is_status_pending &&
2240 server->ops->is_status_pending(buf, server, 0))
2241 return -1;
2242
2243 rdata->result = server->ops->map_error(buf, false);
2244 if (rdata->result != 0) {
2245 cifs_dbg(FYI, "%s: server returned error %d\n",
2246 __func__, rdata->result);
2247 dequeue_mid(mid, rdata->result);
2248 return 0;
2249 }
2250
2251 data_offset = server->ops->read_data_offset(buf) + 4;
2252 data_len = server->ops->read_data_length(buf);
2253
2254 if (data_offset < server->vals->read_rsp_size) {
2255 /*
2256 * win2k8 sometimes sends an offset of 0 when the read
2257 * is beyond the EOF. Treat it as if the data starts just after
2258 * the header.
2259 */
2260 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
2261 __func__, data_offset);
2262 data_offset = server->vals->read_rsp_size;
2263 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
2264 /* data_offset is beyond the end of smallbuf */
2265 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
2266 __func__, data_offset);
2267 rdata->result = -EIO;
2268 dequeue_mid(mid, rdata->result);
2269 return 0;
2270 }
2271
c42a6abe
PS		 2272 pad_len = data_offset - server->vals->read_rsp_size;
2273
4326ed2f
PS		 2274 if (buf_len <= data_offset) {
2275 /* read response payload is in pages */
c42a6abe
PS		 2276 cur_page_idx = pad_len / PAGE_SIZE;
2277 cur_off = pad_len % PAGE_SIZE;
2278
2279 if (cur_page_idx != 0) {
2280 /* data offset is beyond the 1st page of response */
2281 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
2282 __func__, data_offset);
2283 rdata->result = -EIO;
2284 dequeue_mid(mid, rdata->result);
2285 return 0;
2286 }
2287
2288 if (data_len > page_data_size - pad_len) {
2289 /* data_len is corrupt -- discard frame */
2290 rdata->result = -EIO;
2291 dequeue_mid(mid, rdata->result);
2292 return 0;
2293 }
2294
2295 rdata->result = init_read_bvec(pages, npages, page_data_size,
2296 cur_off, &bvec);
2297 if (rdata->result != 0) {
2298 dequeue_mid(mid, rdata->result);
2299 return 0;
2300 }
2301
2302 iov_iter_bvec(&iter, WRITE | ITER_BVEC, bvec, npages, data_len);
4326ed2f
PS		 2303 } else if (buf_len >= data_offset + data_len) {
2304 /* read response payload is in buf */
2305 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
2306 iov.iov_base = buf + data_offset;
2307 iov.iov_len = data_len;
2308 iov_iter_kvec(&iter, WRITE | ITER_KVEC, &iov, 1, data_len);
2309 } else {
2310 /* read response payload cannot be in both buf and pages */
2311 WARN_ONCE(1, "buf can not contain only a part of read data");
2312 rdata->result = -EIO;
2313 dequeue_mid(mid, rdata->result);
2314 return 0;
2315 }
2316
2317 /* set up first iov for signature check */
2318 rdata->iov[0].iov_base = buf;
2319 rdata->iov[0].iov_len = 4;
2320 rdata->iov[1].iov_base = buf + 4;
2321 rdata->iov[1].iov_len = server->vals->read_rsp_size - 4;
2322 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
2323 rdata->iov[0].iov_base, server->vals->read_rsp_size);
2324
2325 length = rdata->copy_into_pages(server, rdata, &iter);
2326
2327 kfree(bvec);
2328
2329 if (length < 0)
2330 return length;
2331
2332 dequeue_mid(mid, false);
2333 return length;
2334}
2335
c42a6abe
PS		 2336static int
2337receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2338{
2339 char *buf = server->smallbuf;
2340 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2341 unsigned int npages;
2342 struct page **pages;
2343 unsigned int len;
2344 unsigned int buflen = get_rfc1002_length(buf) + 4;
2345 int rc;
2346 int i = 0;
2347
2348 len = min_t(unsigned int, buflen, server->vals->read_rsp_size - 4 +
2349 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
2350
2351 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
2352 if (rc < 0)
2353 return rc;
2354 server->total_read += rc;
2355
2356 len = le32_to_cpu(tr_hdr->OriginalMessageSize) + 4 -
2357 server->vals->read_rsp_size;
2358 npages = DIV_ROUND_UP(len, PAGE_SIZE);
2359
2360 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
2361 if (!pages) {
2362 rc = -ENOMEM;
2363 goto discard_data;
2364 }
2365
2366 for (; i < npages; i++) {
2367 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2368 if (!pages[i]) {
2369 rc = -ENOMEM;
2370 goto discard_data;
2371 }
2372 }
2373
2374 /* read read data into pages */
2375 rc = read_data_into_pages(server, pages, npages, len);
2376 if (rc)
2377 goto free_pages;
2378
350be257 2379 rc = cifs_discard_remaining_data(server);
c42a6abe
PS		 2380 if (rc)
2381 goto free_pages;
2382
2383 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size - 4,
2384 pages, npages, len);
2385 if (rc)
2386 goto free_pages;
2387
2388 *mid = smb2_find_mid(server, buf);
2389 if (*mid == NULL)
2390 cifs_dbg(FYI, "mid not found\n");
2391 else {
2392 cifs_dbg(FYI, "mid found\n");
2393 (*mid)->decrypted = true;
2394 rc = handle_read_data(server, *mid, buf,
2395 server->vals->read_rsp_size,
2396 pages, npages, len);
2397 }
2398
2399free_pages:
2400 for (i = i - 1; i >= 0; i--)
2401 put_page(pages[i]);
2402 kfree(pages);
2403 return rc;
2404discard_data:
350be257 2405 cifs_discard_remaining_data(server);
c42a6abe
PS		 2406 goto free_pages;
2407}
2408
4326ed2f
PS		 2409static int
2410receive_encrypted_standard(struct TCP_Server_Info *server,
2411 struct mid_q_entry **mid)
2412{
2413 int length;
2414 char *buf = server->smallbuf;
2415 unsigned int pdu_length = get_rfc1002_length(buf);
2416 unsigned int buf_size;
2417 struct mid_q_entry *mid_entry;
2418
2419 /* switch to large buffer if too big for a small one */
2420 if (pdu_length + 4 > MAX_CIFS_SMALL_BUFFER_SIZE) {
2421 server->large_buf = true;
2422 memcpy(server->bigbuf, buf, server->total_read);
2423 buf = server->bigbuf;
2424 }
2425
2426 /* now read the rest */
2427 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
2428 pdu_length - HEADER_SIZE(server) + 1 + 4);
2429 if (length < 0)
2430 return length;
2431 server->total_read += length;
2432
2433 buf_size = pdu_length + 4 - sizeof(struct smb2_transform_hdr);
2434 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
2435 if (length)
2436 return length;
2437
2438 mid_entry = smb2_find_mid(server, buf);
2439 if (mid_entry == NULL)
2440 cifs_dbg(FYI, "mid not found\n");
2441 else {
2442 cifs_dbg(FYI, "mid found\n");
2443 mid_entry->decrypted = true;
2444 }
2445
2446 *mid = mid_entry;
2447
2448 if (mid_entry && mid_entry->handle)
2449 return mid_entry->handle(server, mid_entry);
2450
2451 return cifs_handle_standard(server, mid_entry);
2452}
2453
2454static int
2455smb3_receive_transform(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2456{
2457 char *buf = server->smallbuf;
2458 unsigned int pdu_length = get_rfc1002_length(buf);
2459 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2460 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2461
2462 if (pdu_length + 4 < sizeof(struct smb2_transform_hdr) +
2463 sizeof(struct smb2_sync_hdr)) {
2464 cifs_dbg(VFS, "Transform message is too small (%u)\n",
2465 pdu_length);
2466 cifs_reconnect(server);
2467 wake_up(&server->response_q);
2468 return -ECONNABORTED;
2469 }
2470
2471 if (pdu_length + 4 < orig_len + sizeof(struct smb2_transform_hdr)) {
2472 cifs_dbg(VFS, "Transform message is broken\n");
2473 cifs_reconnect(server);
2474 wake_up(&server->response_q);
2475 return -ECONNABORTED;
2476 }
2477
c42a6abe
PS		 2478 if (pdu_length + 4 > CIFSMaxBufSize + MAX_HEADER_SIZE(server))
2479 return receive_encrypted_read(server, mid);
4326ed2f
PS		 2480
2481 return receive_encrypted_standard(server, mid);
2482}
2483
2484int
2485smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
2486{
2487 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
2488
2489 return handle_read_data(server, mid, buf, get_rfc1002_length(buf) + 4,
2490 NULL, 0, 0);
2491}
2492
53ef1016 2493struct smb_version_operations smb20_operations = {
027e8eec 2494 .compare_fids = smb2_compare_fids,
2dc7e1c0 2495 .setup_request = smb2_setup_request,
c95b8eed 2496 .setup_async_request = smb2_setup_async_request,
2dc7e1c0 2497 .check_receive = smb2_check_receive,
28ea5290
PS		 2498 .add_credits = smb2_add_credits,
2499 .set_credits = smb2_set_credits,
2500 .get_credits_field = smb2_get_credits_field,
2501 .get_credits = smb2_get_credits,
cb7e9eab 2502 .wait_mtu_credits = cifs_wait_mtu_credits,
2dc7e1c0 2503 .get_next_mid = smb2_get_next_mid,
09a4707e
PS		 2504 .read_data_offset = smb2_read_data_offset,
2505 .read_data_length = smb2_read_data_length,
2506 .map_error = map_smb2_to_linux_error,
093b2bda
PS		 2507 .find_mid = smb2_find_mid,
2508 .check_message = smb2_check_message,
2509 .dump_detail = smb2_dump_detail,
d60622eb
PS		 2510 .clear_stats = smb2_clear_stats,
2511 .print_stats = smb2_print_stats,
983c88a4 2512 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 2513 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 2514 .downgrade_oplock = smb2_downgrade_oplock,
ec2e4523
PS		 2515 .need_neg = smb2_need_neg,
2516 .negotiate = smb2_negotiate,
3a3bab50
PS		 2517 .negotiate_wsize = smb2_negotiate_wsize,
2518 .negotiate_rsize = smb2_negotiate_rsize,
5478f9ba
PS		 2519 .sess_setup = SMB2_sess_setup,
2520 .logoff = SMB2_logoff,
faaf946a
PS		 2521 .tree_connect = SMB2_tcon,
2522 .tree_disconnect = SMB2_tdis,
34f62640 2523 .qfs_tcon = smb2_qfs_tcon,
2503a0db 2524 .is_path_accessible = smb2_is_path_accessible,
9094fad1
PS		 2525 .can_echo = smb2_can_echo,
2526 .echo = SMB2_echo,
be4cb9e3
PS		 2527 .query_path_info = smb2_query_path_info,
2528 .get_srv_inum = smb2_get_srv_inum,
b7546bc5 2529 .query_file_info = smb2_query_file_info,
c839ff24
PS		 2530 .set_path_size = smb2_set_path_size,
2531 .set_file_size = smb2_set_file_size,
1feeaac7 2532 .set_file_info = smb2_set_file_info,
64a5cfa6 2533 .set_compression = smb2_set_compression,
a0e73183
PS		 2534 .mkdir = smb2_mkdir,
2535 .mkdir_setinfo = smb2_mkdir_setinfo,
1a500f01 2536 .rmdir = smb2_rmdir,
cbe6f439 2537 .unlink = smb2_unlink,
35143eb5 2538 .rename = smb2_rename_path,
568798cc 2539 .create_hardlink = smb2_create_hardlink,
b42bf888 2540 .query_symlink = smb2_query_symlink,
5b23c97d
SP		 2541 .query_mf_symlink = smb3_query_mf_symlink,
2542 .create_mf_symlink = smb3_create_mf_symlink,
f0df737e
PS		 2543 .open = smb2_open_file,
2544 .set_fid = smb2_set_fid,
2545 .close = smb2_close_file,
7a5cfb19 2546 .flush = smb2_flush_file,
09a4707e 2547 .async_readv = smb2_async_readv,
33319141 2548 .async_writev = smb2_async_writev,
d8e05039 2549 .sync_read = smb2_sync_read,
009d3443 2550 .sync_write = smb2_sync_write,
d324f08d
PS		 2551 .query_dir_first = smb2_query_dir_first,
2552 .query_dir_next = smb2_query_dir_next,
2553 .close_dir = smb2_close_dir,
2554 .calc_smb_size = smb2_calc_size,
2e44b288 2555 .is_status_pending = smb2_is_status_pending,
511c54a2 2556 .is_session_expired = smb2_is_session_expired,
983c88a4 2557 .oplock_response = smb2_oplock_response,
6fc05c25 2558 .queryfs = smb2_queryfs,
f7ba7fe6
PS		 2559 .mand_lock = smb2_mand_lock,
2560 .mand_unlock_range = smb2_unlock_range,
b140799a 2561 .push_mand_locks = smb2_push_mandatory_locks,
b8c32dbb
PS		 2562 .get_lease_key = smb2_get_lease_key,
2563 .set_lease_key = smb2_set_lease_key,
2564 .new_lease_key = smb2_new_lease_key,
38107d45 2565 .calc_signature = smb2_calc_signature,
53ef1016
PS		 2566 .is_read_op = smb2_is_read_op,
2567 .set_oplock_level = smb2_set_oplock_level,
a41a28bd 2568 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 2569 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 2570 .copychunk_range = smb2_copychunk_range,
7f6c5008 2571 .wp_retry_size = smb2_wp_retry_size,
52755808 2572 .dir_needs_close = smb2_dir_needs_close,
9d49640a 2573 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2574 .select_sectype = smb2_select_sectype,
2f1afe25
SP		 2575#ifdef CONFIG_CIFS_ACL
2576 .get_acl = get_smb2_acl,
2577 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 2578 .set_acl = set_smb2_acl,
2f1afe25 2579#endif /* CIFS_ACL */
38107d45
SF		 2580};
2581
53ef1016
PS		 2582struct smb_version_operations smb21_operations = {
2583 .compare_fids = smb2_compare_fids,
2584 .setup_request = smb2_setup_request,
2585 .setup_async_request = smb2_setup_async_request,
2586 .check_receive = smb2_check_receive,
2587 .add_credits = smb2_add_credits,
2588 .set_credits = smb2_set_credits,
2589 .get_credits_field = smb2_get_credits_field,
2590 .get_credits = smb2_get_credits,
cb7e9eab 2591 .wait_mtu_credits = smb2_wait_mtu_credits,
53ef1016
PS		 2592 .get_next_mid = smb2_get_next_mid,
2593 .read_data_offset = smb2_read_data_offset,
2594 .read_data_length = smb2_read_data_length,
2595 .map_error = map_smb2_to_linux_error,
2596 .find_mid = smb2_find_mid,
2597 .check_message = smb2_check_message,
2598 .dump_detail = smb2_dump_detail,
2599 .clear_stats = smb2_clear_stats,
2600 .print_stats = smb2_print_stats,
2601 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 2602 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 2603 .downgrade_oplock = smb2_downgrade_oplock,
53ef1016
PS		 2604 .need_neg = smb2_need_neg,
2605 .negotiate = smb2_negotiate,
2606 .negotiate_wsize = smb2_negotiate_wsize,
2607 .negotiate_rsize = smb2_negotiate_rsize,
2608 .sess_setup = SMB2_sess_setup,
2609 .logoff = SMB2_logoff,
2610 .tree_connect = SMB2_tcon,
2611 .tree_disconnect = SMB2_tdis,
34f62640 2612 .qfs_tcon = smb2_qfs_tcon,
53ef1016
PS		 2613 .is_path_accessible = smb2_is_path_accessible,
2614 .can_echo = smb2_can_echo,
2615 .echo = SMB2_echo,
2616 .query_path_info = smb2_query_path_info,
2617 .get_srv_inum = smb2_get_srv_inum,
2618 .query_file_info = smb2_query_file_info,
2619 .set_path_size = smb2_set_path_size,
2620 .set_file_size = smb2_set_file_size,
2621 .set_file_info = smb2_set_file_info,
64a5cfa6 2622 .set_compression = smb2_set_compression,
53ef1016
PS		 2623 .mkdir = smb2_mkdir,
2624 .mkdir_setinfo = smb2_mkdir_setinfo,
2625 .rmdir = smb2_rmdir,
2626 .unlink = smb2_unlink,
2627 .rename = smb2_rename_path,
2628 .create_hardlink = smb2_create_hardlink,
2629 .query_symlink = smb2_query_symlink,
c22870ea 2630 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 2631 .create_mf_symlink = smb3_create_mf_symlink,
53ef1016
PS		 2632 .open = smb2_open_file,
2633 .set_fid = smb2_set_fid,
2634 .close = smb2_close_file,
2635 .flush = smb2_flush_file,
2636 .async_readv = smb2_async_readv,
2637 .async_writev = smb2_async_writev,
2638 .sync_read = smb2_sync_read,
2639 .sync_write = smb2_sync_write,
2640 .query_dir_first = smb2_query_dir_first,
2641 .query_dir_next = smb2_query_dir_next,
2642 .close_dir = smb2_close_dir,
2643 .calc_smb_size = smb2_calc_size,
2644 .is_status_pending = smb2_is_status_pending,
511c54a2 2645 .is_session_expired = smb2_is_session_expired,
53ef1016
PS		 2646 .oplock_response = smb2_oplock_response,
2647 .queryfs = smb2_queryfs,
2648 .mand_lock = smb2_mand_lock,
2649 .mand_unlock_range = smb2_unlock_range,
2650 .push_mand_locks = smb2_push_mandatory_locks,
2651 .get_lease_key = smb2_get_lease_key,
2652 .set_lease_key = smb2_set_lease_key,
2653 .new_lease_key = smb2_new_lease_key,
2654 .calc_signature = smb2_calc_signature,
2655 .is_read_op = smb21_is_read_op,
2656 .set_oplock_level = smb21_set_oplock_level,
a41a28bd 2657 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 2658 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 2659 .copychunk_range = smb2_copychunk_range,
7f6c5008 2660 .wp_retry_size = smb2_wp_retry_size,
52755808 2661 .dir_needs_close = smb2_dir_needs_close,
834170c8 2662 .enum_snapshots = smb3_enum_snapshots,
9d49640a 2663 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2664 .select_sectype = smb2_select_sectype,
2f1afe25
SP		 2665#ifdef CONFIG_CIFS_ACL
2666 .get_acl = get_smb2_acl,
2667 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 2668 .set_acl = set_smb2_acl,
2f1afe25 2669#endif /* CIFS_ACL */
53ef1016 2670};
38107d45
SF		 2671
2672struct smb_version_operations smb30_operations = {
2673 .compare_fids = smb2_compare_fids,
2674 .setup_request = smb2_setup_request,
2675 .setup_async_request = smb2_setup_async_request,
2676 .check_receive = smb2_check_receive,
2677 .add_credits = smb2_add_credits,
2678 .set_credits = smb2_set_credits,
2679 .get_credits_field = smb2_get_credits_field,
2680 .get_credits = smb2_get_credits,
cb7e9eab 2681 .wait_mtu_credits = smb2_wait_mtu_credits,
38107d45
SF		 2682 .get_next_mid = smb2_get_next_mid,
2683 .read_data_offset = smb2_read_data_offset,
2684 .read_data_length = smb2_read_data_length,
2685 .map_error = map_smb2_to_linux_error,
2686 .find_mid = smb2_find_mid,
2687 .check_message = smb2_check_message,
2688 .dump_detail = smb2_dump_detail,
2689 .clear_stats = smb2_clear_stats,
2690 .print_stats = smb2_print_stats,
769ee6a4 2691 .dump_share_caps = smb2_dump_share_caps,
38107d45 2692 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 2693 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 2694 .downgrade_oplock = smb2_downgrade_oplock,
38107d45
SF		 2695 .need_neg = smb2_need_neg,
2696 .negotiate = smb2_negotiate,
2697 .negotiate_wsize = smb2_negotiate_wsize,
2698 .negotiate_rsize = smb2_negotiate_rsize,
2699 .sess_setup = SMB2_sess_setup,
2700 .logoff = SMB2_logoff,
2701 .tree_connect = SMB2_tcon,
2702 .tree_disconnect = SMB2_tdis,
af6a12ea 2703 .qfs_tcon = smb3_qfs_tcon,
38107d45
SF		 2704 .is_path_accessible = smb2_is_path_accessible,
2705 .can_echo = smb2_can_echo,
2706 .echo = SMB2_echo,
2707 .query_path_info = smb2_query_path_info,
2708 .get_srv_inum = smb2_get_srv_inum,
2709 .query_file_info = smb2_query_file_info,
2710 .set_path_size = smb2_set_path_size,
2711 .set_file_size = smb2_set_file_size,
2712 .set_file_info = smb2_set_file_info,
64a5cfa6 2713 .set_compression = smb2_set_compression,
38107d45
SF		 2714 .mkdir = smb2_mkdir,
2715 .mkdir_setinfo = smb2_mkdir_setinfo,
2716 .rmdir = smb2_rmdir,
2717 .unlink = smb2_unlink,
2718 .rename = smb2_rename_path,
2719 .create_hardlink = smb2_create_hardlink,
b42bf888 2720 .query_symlink = smb2_query_symlink,
c22870ea 2721 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 2722 .create_mf_symlink = smb3_create_mf_symlink,
38107d45
SF		 2723 .open = smb2_open_file,
2724 .set_fid = smb2_set_fid,
2725 .close = smb2_close_file,
2726 .flush = smb2_flush_file,
2727 .async_readv = smb2_async_readv,
2728 .async_writev = smb2_async_writev,
2729 .sync_read = smb2_sync_read,
2730 .sync_write = smb2_sync_write,
2731 .query_dir_first = smb2_query_dir_first,
2732 .query_dir_next = smb2_query_dir_next,
2733 .close_dir = smb2_close_dir,
2734 .calc_smb_size = smb2_calc_size,
2735 .is_status_pending = smb2_is_status_pending,
511c54a2 2736 .is_session_expired = smb2_is_session_expired,
38107d45
SF		 2737 .oplock_response = smb2_oplock_response,
2738 .queryfs = smb2_queryfs,
2739 .mand_lock = smb2_mand_lock,
2740 .mand_unlock_range = smb2_unlock_range,
2741 .push_mand_locks = smb2_push_mandatory_locks,
2742 .get_lease_key = smb2_get_lease_key,
2743 .set_lease_key = smb2_set_lease_key,
2744 .new_lease_key = smb2_new_lease_key,
373512ec 2745 .generate_signingkey = generate_smb30signingkey,
38107d45 2746 .calc_signature = smb3_calc_signature,
b3152e2c 2747 .set_integrity = smb3_set_integrity,
53ef1016 2748 .is_read_op = smb21_is_read_op,
42873b0a 2749 .set_oplock_level = smb3_set_oplock_level,
f047390a
PS		 2750 .create_lease_buf = smb3_create_lease_buf,
2751 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 2752 .copychunk_range = smb2_copychunk_range,
ca9e7a1c 2753 .duplicate_extents = smb2_duplicate_extents,
ff1c038a 2754 .validate_negotiate = smb3_validate_negotiate,
7f6c5008 2755 .wp_retry_size = smb2_wp_retry_size,
52755808 2756 .dir_needs_close = smb2_dir_needs_close,
31742c5a 2757 .fallocate = smb3_fallocate,
834170c8 2758 .enum_snapshots = smb3_enum_snapshots,
026e93dc
PS		 2759 .init_transform_rq = smb3_init_transform_rq,
2760 .free_transform_rq = smb3_free_transform_rq,
4326ed2f
PS		 2761 .is_transform_hdr = smb3_is_transform_hdr,
2762 .receive_transform = smb3_receive_transform,
9d49640a 2763 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2764 .select_sectype = smb2_select_sectype,
2f1afe25
SP		 2765#ifdef CONFIG_CIFS_ACL
2766 .get_acl = get_smb2_acl,
2767 .get_acl_by_fid = get_smb2_acl_by_fid,
366ed846 2768 .set_acl = set_smb2_acl,
2f1afe25 2769#endif /* CIFS_ACL */
1080ef75
SF		 2770};
2771
aab1893d
SF		 2772#ifdef CONFIG_CIFS_SMB311
2773struct smb_version_operations smb311_operations = {
2774 .compare_fids = smb2_compare_fids,
2775 .setup_request = smb2_setup_request,
2776 .setup_async_request = smb2_setup_async_request,
2777 .check_receive = smb2_check_receive,
2778 .add_credits = smb2_add_credits,
2779 .set_credits = smb2_set_credits,
2780 .get_credits_field = smb2_get_credits_field,
2781 .get_credits = smb2_get_credits,
2782 .wait_mtu_credits = smb2_wait_mtu_credits,
2783 .get_next_mid = smb2_get_next_mid,
2784 .read_data_offset = smb2_read_data_offset,
2785 .read_data_length = smb2_read_data_length,
2786 .map_error = map_smb2_to_linux_error,
2787 .find_mid = smb2_find_mid,
2788 .check_message = smb2_check_message,
2789 .dump_detail = smb2_dump_detail,
2790 .clear_stats = smb2_clear_stats,
2791 .print_stats = smb2_print_stats,
2792 .dump_share_caps = smb2_dump_share_caps,
2793 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 2794 .handle_cancelled_mid = smb2_handle_cancelled_mid,
aab1893d
SF		 2795 .downgrade_oplock = smb2_downgrade_oplock,
2796 .need_neg = smb2_need_neg,
2797 .negotiate = smb2_negotiate,
2798 .negotiate_wsize = smb2_negotiate_wsize,
2799 .negotiate_rsize = smb2_negotiate_rsize,
2800 .sess_setup = SMB2_sess_setup,
2801 .logoff = SMB2_logoff,
2802 .tree_connect = SMB2_tcon,
2803 .tree_disconnect = SMB2_tdis,
2804 .qfs_tcon = smb3_qfs_tcon,
2805 .is_path_accessible = smb2_is_path_accessible,
2806 .can_echo = smb2_can_echo,
2807 .echo = SMB2_echo,
2808 .query_path_info = smb2_query_path_info,
2809 .get_srv_inum = smb2_get_srv_inum,
2810 .query_file_info = smb2_query_file_info,
2811 .set_path_size = smb2_set_path_size,
2812 .set_file_size = smb2_set_file_size,
2813 .set_file_info = smb2_set_file_info,
2814 .set_compression = smb2_set_compression,
2815 .mkdir = smb2_mkdir,
2816 .mkdir_setinfo = smb2_mkdir_setinfo,
2817 .rmdir = smb2_rmdir,
2818 .unlink = smb2_unlink,
2819 .rename = smb2_rename_path,
2820 .create_hardlink = smb2_create_hardlink,
2821 .query_symlink = smb2_query_symlink,
2822 .query_mf_symlink = smb3_query_mf_symlink,
2823 .create_mf_symlink = smb3_create_mf_symlink,
2824 .open = smb2_open_file,
2825 .set_fid = smb2_set_fid,
2826 .close = smb2_close_file,
2827 .flush = smb2_flush_file,
2828 .async_readv = smb2_async_readv,
2829 .async_writev = smb2_async_writev,
2830 .sync_read = smb2_sync_read,
2831 .sync_write = smb2_sync_write,
2832 .query_dir_first = smb2_query_dir_first,
2833 .query_dir_next = smb2_query_dir_next,
2834 .close_dir = smb2_close_dir,
2835 .calc_smb_size = smb2_calc_size,
2836 .is_status_pending = smb2_is_status_pending,
511c54a2 2837 .is_session_expired = smb2_is_session_expired,
aab1893d
SF		 2838 .oplock_response = smb2_oplock_response,
2839 .queryfs = smb2_queryfs,
2840 .mand_lock = smb2_mand_lock,
2841 .mand_unlock_range = smb2_unlock_range,
2842 .push_mand_locks = smb2_push_mandatory_locks,
2843 .get_lease_key = smb2_get_lease_key,
2844 .set_lease_key = smb2_set_lease_key,
2845 .new_lease_key = smb2_new_lease_key,
373512ec 2846 .generate_signingkey = generate_smb311signingkey,
aab1893d 2847 .calc_signature = smb3_calc_signature,
b3152e2c 2848 .set_integrity = smb3_set_integrity,
aab1893d
SF		 2849 .is_read_op = smb21_is_read_op,
2850 .set_oplock_level = smb3_set_oplock_level,
2851 .create_lease_buf = smb3_create_lease_buf,
2852 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 2853 .copychunk_range = smb2_copychunk_range,
02b16665 2854 .duplicate_extents = smb2_duplicate_extents,
aab1893d
SF		 2855/* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
2856 .wp_retry_size = smb2_wp_retry_size,
2857 .dir_needs_close = smb2_dir_needs_close,
2858 .fallocate = smb3_fallocate,
834170c8 2859 .enum_snapshots = smb3_enum_snapshots,
026e93dc
PS		 2860 .init_transform_rq = smb3_init_transform_rq,
2861 .free_transform_rq = smb3_free_transform_rq,
4326ed2f
PS		 2862 .is_transform_hdr = smb3_is_transform_hdr,
2863 .receive_transform = smb3_receive_transform,
9d49640a 2864 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2865 .select_sectype = smb2_select_sectype,
aab1893d
SF		 2866};
2867#endif /* CIFS_SMB311 */
2868
dd446b16
SF		 2869struct smb_version_values smb20_values = {
2870 .version_string = SMB20_VERSION_STRING,
2871 .protocol_id = SMB20_PROT_ID,
2872 .req_capabilities = 0, /* MBZ */
2873 .large_lock_type = 0,
2874 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2875 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2876 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2877 .header_size = sizeof(struct smb2_hdr),
2878 .max_header_size = MAX_SMB2_HDR_SIZE,
2879 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2880 .lock_cmd = SMB2_LOCK,
2881 .cap_unix = 0,
2882 .cap_nt_find = SMB2_NT_FIND,
2883 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 2884 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2885 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 2886 .create_lease_size = sizeof(struct create_lease),
dd446b16
SF		 2887};
2888
1080ef75
SF		 2889struct smb_version_values smb21_values = {
2890 .version_string = SMB21_VERSION_STRING,
e4aa25e7
SF		 2891 .protocol_id = SMB21_PROT_ID,
2892 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
2893 .large_lock_type = 0,
2894 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2895 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2896 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2897 .header_size = sizeof(struct smb2_hdr),
2898 .max_header_size = MAX_SMB2_HDR_SIZE,
2899 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2900 .lock_cmd = SMB2_LOCK,
2901 .cap_unix = 0,
2902 .cap_nt_find = SMB2_NT_FIND,
2903 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 2904 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2905 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 2906 .create_lease_size = sizeof(struct create_lease),
e4aa25e7
SF		 2907};
2908
2909struct smb_version_values smb30_values = {
2910 .version_string = SMB30_VERSION_STRING,
2911 .protocol_id = SMB30_PROT_ID,
373512ec 2912 .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		 2913 .large_lock_type = 0,
2914 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2915 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2916 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
093b2bda
PS		 2917 .header_size = sizeof(struct smb2_hdr),
2918 .max_header_size = MAX_SMB2_HDR_SIZE,
09a4707e 2919 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2dc7e1c0 2920 .lock_cmd = SMB2_LOCK,
29e20f9c
PS		 2921 .cap_unix = 0,
2922 .cap_nt_find = SMB2_NT_FIND,
2923 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 2924 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2925 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 2926 .create_lease_size = sizeof(struct create_lease_v2),
1080ef75 2927};
20b6d8b4
SF		 2928
2929struct smb_version_values smb302_values = {
2930 .version_string = SMB302_VERSION_STRING,
2931 .protocol_id = SMB302_PROT_ID,
373512ec 2932 .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		 2933 .large_lock_type = 0,
2934 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2935 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2936 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2937 .header_size = sizeof(struct smb2_hdr),
2938 .max_header_size = MAX_SMB2_HDR_SIZE,
2939 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2940 .lock_cmd = SMB2_LOCK,
2941 .cap_unix = 0,
2942 .cap_nt_find = SMB2_NT_FIND,
2943 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 2944 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2945 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 2946 .create_lease_size = sizeof(struct create_lease_v2),
20b6d8b4 2947};
5f7fbf73
SF		 2948
2949#ifdef CONFIG_CIFS_SMB311
2950struct smb_version_values smb311_values = {
2951 .version_string = SMB311_VERSION_STRING,
2952 .protocol_id = SMB311_PROT_ID,
1955880b 2953 .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		 2954 .large_lock_type = 0,
2955 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2956 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2957 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2958 .header_size = sizeof(struct smb2_hdr),
2959 .max_header_size = MAX_SMB2_HDR_SIZE,
2960 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2961 .lock_cmd = SMB2_LOCK,
2962 .cap_unix = 0,
2963 .cap_nt_find = SMB2_NT_FIND,
2964 .cap_large_files = SMB2_LARGE_FILES,
2965 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2966 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
2967 .create_lease_size = sizeof(struct create_lease_v2),
2968};
2969#endif /* SMB311 */
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