]> git.proxmox.com Git - mirror_ubuntu-hirsute-kernel.git/blame - fs/cifs/smb2ops.c
projects / mirror_ubuntu-hirsute-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
CIFS: check if pages is null rather than bv for a failed allocation
[mirror_ubuntu-hirsute-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) {
f96637be 985 cifs_dbg(VFS, "open dir failed\n");
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) {
f96637be 995 cifs_dbg(VFS, "query directory failed\n");
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
983c88a4
PS		 1039static int
1040smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1041 struct cifsInodeInfo *cinode)
1042{
0822f514
PS		 1043 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1044 return SMB2_lease_break(0, tcon, cinode->lease_key,
1045 smb2_get_lease_state(cinode));
1046
983c88a4
PS		 1047 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1048 fid->volatile_fid,
18cceb6a 1049 CIFS_CACHE_READ(cinode) ? 1 : 0);
983c88a4
PS		 1050}
1051
6fc05c25
PS		 1052static int
1053smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1054 struct kstatfs *buf)
1055{
1056 int rc;
6fc05c25
PS		 1057 __le16 srch_path = 0; /* Null - open root of share */
1058 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 1059 struct cifs_open_parms oparms;
1060 struct cifs_fid fid;
1061
1062 oparms.tcon = tcon;
1063 oparms.desired_access = FILE_READ_ATTRIBUTES;
1064 oparms.disposition = FILE_OPEN;
1065 oparms.create_options = 0;
1066 oparms.fid = &fid;
9cbc0b73 1067 oparms.reconnect = false;
6fc05c25 1068
b42bf888 1069 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
6fc05c25
PS		 1070 if (rc)
1071 return rc;
1072 buf->f_type = SMB2_MAGIC_NUMBER;
064f6047
PS		 1073 rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
1074 buf);
1075 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
6fc05c25
PS		 1076 return rc;
1077}
1078
027e8eec
PS		 1079static bool
1080smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
1081{
1082 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
1083 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
1084}
1085
f7ba7fe6
PS		 1086static int
1087smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
1088 __u64 length, __u32 type, int lock, int unlock, bool wait)
1089{
1090 if (unlock && !lock)
1091 type = SMB2_LOCKFLAG_UNLOCK;
1092 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
1093 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
1094 current->tgid, length, offset, type, wait);
1095}
1096
b8c32dbb
PS		 1097static void
1098smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
1099{
1100 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
1101}
1102
1103static void
1104smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
1105{
1106 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
1107}
1108
1109static void
1110smb2_new_lease_key(struct cifs_fid *fid)
1111{
fa70b87c 1112 generate_random_uuid(fid->lease_key);
b8c32dbb
PS		 1113}
1114
9d49640a
AA		 1115static int
1116smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
1117 const char *search_name,
1118 struct dfs_info3_param **target_nodes,
1119 unsigned int *num_of_nodes,
1120 const struct nls_table *nls_codepage, int remap)
1121{
1122 int rc;
1123 __le16 *utf16_path = NULL;
1124 int utf16_path_len = 0;
1125 struct cifs_tcon *tcon;
1126 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
1127 struct get_dfs_referral_rsp *dfs_rsp = NULL;
1128 u32 dfs_req_size = 0, dfs_rsp_size = 0;
1129
1130 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
1131
1132 /*
1133 * Use any tcon from the current session. Here, the first one.
1134 */
1135 spin_lock(&cifs_tcp_ses_lock);
1136 tcon = list_first_entry_or_null(&ses->tcon_list, struct cifs_tcon,
1137 tcon_list);
1138 if (tcon)
1139 tcon->tc_count++;
1140 spin_unlock(&cifs_tcp_ses_lock);
1141
1142 if (!tcon) {
1143 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
1144 ses);
1145 rc = -ENOTCONN;
1146 goto out;
1147 }
1148
1149 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
1150 &utf16_path_len,
1151 nls_codepage, remap);
1152 if (!utf16_path) {
1153 rc = -ENOMEM;
1154 goto out;
1155 }
1156
1157 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
1158 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
1159 if (!dfs_req) {
1160 rc = -ENOMEM;
1161 goto out;
1162 }
1163
1164 /* Highest DFS referral version understood */
1165 dfs_req->MaxReferralLevel = DFS_VERSION;
1166
1167 /* Path to resolve in an UTF-16 null-terminated string */
1168 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
1169
1170 do {
1171 /* try first with IPC */
1172 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1173 FSCTL_DFS_GET_REFERRALS,
1174 true /* is_fsctl */, true /* use_ipc */,
1175 (char *)dfs_req, dfs_req_size,
1176 (char **)&dfs_rsp, &dfs_rsp_size);
1177 if (rc == -ENOTCONN) {
1178 /* try with normal tcon */
1179 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1180 FSCTL_DFS_GET_REFERRALS,
1181 true /* is_fsctl */, false /*use_ipc*/,
1182 (char *)dfs_req, dfs_req_size,
1183 (char **)&dfs_rsp, &dfs_rsp_size);
1184 }
1185 } while (rc == -EAGAIN);
1186
1187 if (rc) {
1188 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
1189 goto out;
1190 }
1191
1192 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
1193 num_of_nodes, target_nodes,
1194 nls_codepage, remap, search_name,
1195 true /* is_unicode */);
1196 if (rc) {
1197 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
1198 goto out;
1199 }
1200
1201 out:
1202 if (tcon) {
1203 spin_lock(&cifs_tcp_ses_lock);
1204 tcon->tc_count--;
1205 spin_unlock(&cifs_tcp_ses_lock);
1206 }
1207 kfree(utf16_path);
1208 kfree(dfs_req);
1209 kfree(dfs_rsp);
1210 return rc;
1211}
7893242e
PS		 1212#define SMB2_SYMLINK_STRUCT_SIZE \
1213 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
1214
b42bf888
PS		 1215static int
1216smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
1217 const char *full_path, char **target_path,
1218 struct cifs_sb_info *cifs_sb)
1219{
1220 int rc;
1221 __le16 *utf16_path;
1222 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1223 struct cifs_open_parms oparms;
1224 struct cifs_fid fid;
1225 struct smb2_err_rsp *err_buf = NULL;
1226 struct smb2_symlink_err_rsp *symlink;
7893242e
PS		 1227 unsigned int sub_len;
1228 unsigned int sub_offset;
1229 unsigned int print_len;
1230 unsigned int print_offset;
b42bf888
PS		 1231
1232 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
1233
1234 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
1235 if (!utf16_path)
1236 return -ENOMEM;
1237
1238 oparms.tcon = tcon;
1239 oparms.desired_access = FILE_READ_ATTRIBUTES;
1240 oparms.disposition = FILE_OPEN;
1241 oparms.create_options = 0;
1242 oparms.fid = &fid;
1243 oparms.reconnect = false;
1244
1245 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf);
1246
1247 if (!rc || !err_buf) {
1248 kfree(utf16_path);
1249 return -ENOENT;
1250 }
7893242e
PS		 1251
1252 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1253 get_rfc1002_length(err_buf) + 4 < SMB2_SYMLINK_STRUCT_SIZE) {
1254 kfree(utf16_path);
1255 return -ENOENT;
1256 }
1257
b42bf888
PS		 1258 /* open must fail on symlink - reset rc */
1259 rc = 0;
1260 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
1261 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
1262 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
7893242e
PS		 1263 print_len = le16_to_cpu(symlink->PrintNameLength);
1264 print_offset = le16_to_cpu(symlink->PrintNameOffset);
1265
1266 if (get_rfc1002_length(err_buf) + 4 <
1267 SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
1268 kfree(utf16_path);
1269 return -ENOENT;
1270 }
1271
1272 if (get_rfc1002_length(err_buf) + 4 <
1273 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
1274 kfree(utf16_path);
1275 return -ENOENT;
1276 }
1277
b42bf888
PS		 1278 *target_path = cifs_strndup_from_utf16(
1279 (char *)symlink->PathBuffer + sub_offset,
1280 sub_len, true, cifs_sb->local_nls);
1281 if (!(*target_path)) {
1282 kfree(utf16_path);
1283 return -ENOMEM;
1284 }
1285 convert_delimiter(*target_path, '/');
1286 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
1287 kfree(utf16_path);
1288 return rc;
1289}
1290
30175628
SF		 1291static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
1292 loff_t offset, loff_t len, bool keep_size)
1293{
1294 struct inode *inode;
1295 struct cifsInodeInfo *cifsi;
1296 struct cifsFileInfo *cfile = file->private_data;
1297 struct file_zero_data_information fsctl_buf;
1298 long rc;
1299 unsigned int xid;
1300
1301 xid = get_xid();
1302
2b0143b5 1303 inode = d_inode(cfile->dentry);
30175628
SF		 1304 cifsi = CIFS_I(inode);
1305
1306 /* if file not oplocked can't be sure whether asking to extend size */
1307 if (!CIFS_CACHE_READ(cifsi))
1308 if (keep_size == false)
1309 return -EOPNOTSUPP;
1310
2bb93d24 1311 /*
30175628
SF		 1312 * Must check if file sparse since fallocate -z (zero range) assumes
1313 * non-sparse allocation
1314 */
1315 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE))
1316 return -EOPNOTSUPP;
1317
1318 /*
1319 * need to make sure we are not asked to extend the file since the SMB3
1320 * fsctl does not change the file size. In the future we could change
1321 * this to zero the first part of the range then set the file size
1322 * which for a non sparse file would zero the newly extended range
1323 */
1324 if (keep_size == false)
1325 if (i_size_read(inode) < offset + len)
1326 return -EOPNOTSUPP;
1327
1328 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1329
1330 fsctl_buf.FileOffset = cpu_to_le64(offset);
1331 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1332
1333 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1334 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
51146625
AA		 1335 true /* is_fctl */, false /* use_ipc */,
1336 (char *)&fsctl_buf,
30175628
SF		 1337 sizeof(struct file_zero_data_information), NULL, NULL);
1338 free_xid(xid);
1339 return rc;
1340}
1341
31742c5a
SF		 1342static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
1343 loff_t offset, loff_t len)
1344{
1345 struct inode *inode;
1346 struct cifsInodeInfo *cifsi;
1347 struct cifsFileInfo *cfile = file->private_data;
1348 struct file_zero_data_information fsctl_buf;
1349 long rc;
1350 unsigned int xid;
1351 __u8 set_sparse = 1;
1352
1353 xid = get_xid();
1354
2b0143b5 1355 inode = d_inode(cfile->dentry);
31742c5a
SF		 1356 cifsi = CIFS_I(inode);
1357
1358 /* Need to make file sparse, if not already, before freeing range. */
1359 /* Consider adding equivalent for compressed since it could also work */
1360 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse))
1361 return -EOPNOTSUPP;
1362
1363 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1364
1365 fsctl_buf.FileOffset = cpu_to_le64(offset);
1366 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1367
1368 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1369 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
51146625
AA		 1370 true /* is_fctl */, false /* use_ipc */,
1371 (char *)&fsctl_buf,
31742c5a
SF		 1372 sizeof(struct file_zero_data_information), NULL, NULL);
1373 free_xid(xid);
1374 return rc;
1375}
1376
9ccf3216
SF		 1377static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
1378 loff_t off, loff_t len, bool keep_size)
1379{
1380 struct inode *inode;
1381 struct cifsInodeInfo *cifsi;
1382 struct cifsFileInfo *cfile = file->private_data;
1383 long rc = -EOPNOTSUPP;
1384 unsigned int xid;
1385
1386 xid = get_xid();
1387
2b0143b5 1388 inode = d_inode(cfile->dentry);
9ccf3216
SF		 1389 cifsi = CIFS_I(inode);
1390
1391 /* if file not oplocked can't be sure whether asking to extend size */
1392 if (!CIFS_CACHE_READ(cifsi))
1393 if (keep_size == false)
1394 return -EOPNOTSUPP;
1395
1396 /*
1397 * Files are non-sparse by default so falloc may be a no-op
1398 * Must check if file sparse. If not sparse, and not extending
1399 * then no need to do anything since file already allocated
1400 */
1401 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
1402 if (keep_size == true)
1403 return 0;
1404 /* check if extending file */
1405 else if (i_size_read(inode) >= off + len)
1406 /* not extending file and already not sparse */
1407 return 0;
1408 /* BB: in future add else clause to extend file */
1409 else
1410 return -EOPNOTSUPP;
1411 }
1412
1413 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
1414 /*
1415 * Check if falloc starts within first few pages of file
1416 * and ends within a few pages of the end of file to
1417 * ensure that most of file is being forced to be
1418 * fallocated now. If so then setting whole file sparse
1419 * ie potentially making a few extra pages at the beginning
1420 * or end of the file non-sparse via set_sparse is harmless.
1421 */
1422 if ((off > 8192) || (off + len + 8192 < i_size_read(inode)))
1423 return -EOPNOTSUPP;
1424
1425 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
1426 }
1427 /* BB: else ... in future add code to extend file and set sparse */
1428
1429
1430 free_xid(xid);
1431 return rc;
1432}
1433
1434
31742c5a
SF		 1435static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
1436 loff_t off, loff_t len)
1437{
1438 /* KEEP_SIZE already checked for by do_fallocate */
1439 if (mode & FALLOC_FL_PUNCH_HOLE)
1440 return smb3_punch_hole(file, tcon, off, len);
30175628
SF		 1441 else if (mode & FALLOC_FL_ZERO_RANGE) {
1442 if (mode & FALLOC_FL_KEEP_SIZE)
1443 return smb3_zero_range(file, tcon, off, len, true);
1444 return smb3_zero_range(file, tcon, off, len, false);
9ccf3216
SF		 1445 } else if (mode == FALLOC_FL_KEEP_SIZE)
1446 return smb3_simple_falloc(file, tcon, off, len, true);
1447 else if (mode == 0)
1448 return smb3_simple_falloc(file, tcon, off, len, false);
31742c5a
SF		 1449
1450 return -EOPNOTSUPP;
1451}
1452
c11f1df5
SP		 1453static void
1454smb2_downgrade_oplock(struct TCP_Server_Info *server,
1455 struct cifsInodeInfo *cinode, bool set_level2)
1456{
1457 if (set_level2)
1458 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
1459 0, NULL);
1460 else
1461 server->ops->set_oplock_level(cinode, 0, 0, NULL);
1462}
1463
53ef1016 1464static void
42873b0a
PS		 1465smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1466 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 1467{
1468 oplock &= 0xFF;
1469 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1470 return;
1471 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
42873b0a 1472 cinode->oplock = CIFS_CACHE_RHW_FLG;
53ef1016
PS		 1473 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
1474 &cinode->vfs_inode);
1475 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
42873b0a 1476 cinode->oplock = CIFS_CACHE_RW_FLG;
53ef1016
PS		 1477 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
1478 &cinode->vfs_inode);
1479 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
1480 cinode->oplock = CIFS_CACHE_READ_FLG;
1481 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
1482 &cinode->vfs_inode);
1483 } else
1484 cinode->oplock = 0;
1485}
1486
1487static void
42873b0a
PS		 1488smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1489 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 1490{
1491 char message[5] = {0};
1492
1493 oplock &= 0xFF;
1494 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1495 return;
1496
1497 cinode->oplock = 0;
1498 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
1499 cinode->oplock |= CIFS_CACHE_READ_FLG;
1500 strcat(message, "R");
1501 }
1502 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
1503 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
1504 strcat(message, "H");
1505 }
1506 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
1507 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
1508 strcat(message, "W");
1509 }
1510 if (!cinode->oplock)
1511 strcat(message, "None");
1512 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
1513 &cinode->vfs_inode);
1514}
1515
42873b0a
PS		 1516static void
1517smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1518 unsigned int epoch, bool *purge_cache)
1519{
1520 unsigned int old_oplock = cinode->oplock;
1521
1522 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
1523
1524 if (purge_cache) {
1525 *purge_cache = false;
1526 if (old_oplock == CIFS_CACHE_READ_FLG) {
1527 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
1528 (epoch - cinode->epoch > 0))
1529 *purge_cache = true;
1530 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1531 (epoch - cinode->epoch > 1))
1532 *purge_cache = true;
1533 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1534 (epoch - cinode->epoch > 1))
1535 *purge_cache = true;
1536 else if (cinode->oplock == 0 &&
1537 (epoch - cinode->epoch > 0))
1538 *purge_cache = true;
1539 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
1540 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1541 (epoch - cinode->epoch > 0))
1542 *purge_cache = true;
1543 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1544 (epoch - cinode->epoch > 1))
1545 *purge_cache = true;
1546 }
1547 cinode->epoch = epoch;
1548 }
1549}
1550
53ef1016
PS		 1551static bool
1552smb2_is_read_op(__u32 oplock)
1553{
1554 return oplock == SMB2_OPLOCK_LEVEL_II;
1555}
1556
1557static bool
1558smb21_is_read_op(__u32 oplock)
1559{
1560 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
1561 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
1562}
1563
f047390a
PS		 1564static __le32
1565map_oplock_to_lease(u8 oplock)
1566{
1567 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
1568 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
1569 else if (oplock == SMB2_OPLOCK_LEVEL_II)
1570 return SMB2_LEASE_READ_CACHING;
1571 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
1572 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
1573 SMB2_LEASE_WRITE_CACHING;
1574 return 0;
1575}
1576
a41a28bd
PS		 1577static char *
1578smb2_create_lease_buf(u8 *lease_key, u8 oplock)
1579{
1580 struct create_lease *buf;
1581
1582 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
1583 if (!buf)
1584 return NULL;
1585
1586 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1587 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
f047390a 1588 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
a41a28bd
PS		 1589
1590 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1591 (struct create_lease, lcontext));
1592 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
1593 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1594 (struct create_lease, Name));
1595 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 1596 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
a41a28bd
PS		 1597 buf->Name[0] = 'R';
1598 buf->Name[1] = 'q';
1599 buf->Name[2] = 'L';
1600 buf->Name[3] = 's';
1601 return (char *)buf;
1602}
1603
f047390a
PS		 1604static char *
1605smb3_create_lease_buf(u8 *lease_key, u8 oplock)
1606{
1607 struct create_lease_v2 *buf;
1608
1609 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
1610 if (!buf)
1611 return NULL;
1612
1613 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1614 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
1615 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
1616
1617 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1618 (struct create_lease_v2, lcontext));
1619 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
1620 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1621 (struct create_lease_v2, Name));
1622 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 1623 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
f047390a
PS		 1624 buf->Name[0] = 'R';
1625 buf->Name[1] = 'q';
1626 buf->Name[2] = 'L';
1627 buf->Name[3] = 's';
1628 return (char *)buf;
1629}
1630
b5c7cde3 1631static __u8
42873b0a 1632smb2_parse_lease_buf(void *buf, unsigned int *epoch)
b5c7cde3
PS		 1633{
1634 struct create_lease *lc = (struct create_lease *)buf;
1635
42873b0a 1636 *epoch = 0; /* not used */
b5c7cde3
PS		 1637 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1638 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1639 return le32_to_cpu(lc->lcontext.LeaseState);
1640}
1641
f047390a 1642static __u8
42873b0a 1643smb3_parse_lease_buf(void *buf, unsigned int *epoch)
f047390a
PS		 1644{
1645 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
1646
42873b0a 1647 *epoch = le16_to_cpu(lc->lcontext.Epoch);
f047390a
PS		 1648 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1649 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1650 return le32_to_cpu(lc->lcontext.LeaseState);
1651}
1652
7f6c5008
PS		 1653static unsigned int
1654smb2_wp_retry_size(struct inode *inode)
1655{
1656 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
1657 SMB2_MAX_BUFFER_SIZE);
1658}
1659
52755808
PS		 1660static bool
1661smb2_dir_needs_close(struct cifsFileInfo *cfile)
1662{
1663 return !cfile->invalidHandle;
1664}
1665
026e93dc
PS		 1666static void
1667fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, struct smb_rqst *old_rq)
1668{
1669 struct smb2_sync_hdr *shdr =
1670 (struct smb2_sync_hdr *)old_rq->rq_iov[1].iov_base;
1671 unsigned int orig_len = get_rfc1002_length(old_rq->rq_iov[0].iov_base);
1672
1673 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
1674 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
1675 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
1676 tr_hdr->Flags = cpu_to_le16(0x01);
1677 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
1678 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
1679 inc_rfc1001_len(tr_hdr, sizeof(struct smb2_transform_hdr) - 4);
1680 inc_rfc1001_len(tr_hdr, orig_len);
1681}
1682
1683static struct scatterlist *
1684init_sg(struct smb_rqst *rqst, u8 *sign)
1685{
1686 unsigned int sg_len = rqst->rq_nvec + rqst->rq_npages + 1;
1687 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24;
1688 struct scatterlist *sg;
1689 unsigned int i;
1690 unsigned int j;
1691
1692 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
1693 if (!sg)
1694 return NULL;
1695
1696 sg_init_table(sg, sg_len);
1697 sg_set_buf(&sg[0], rqst->rq_iov[0].iov_base + 24, assoc_data_len);
1698 for (i = 1; i < rqst->rq_nvec; i++)
1699 sg_set_buf(&sg[i], rqst->rq_iov[i].iov_base,
1700 rqst->rq_iov[i].iov_len);
1701 for (j = 0; i < sg_len - 1; i++, j++) {
1702 unsigned int len = (j < rqst->rq_npages - 1) ? rqst->rq_pagesz
1703 : rqst->rq_tailsz;
1704 sg_set_page(&sg[i], rqst->rq_pages[j], len, 0);
1705 }
1706 sg_set_buf(&sg[sg_len - 1], sign, SMB2_SIGNATURE_SIZE);
1707 return sg;
1708}
1709
1710struct cifs_crypt_result {
1711 int err;
1712 struct completion completion;
1713};
1714
1715static void cifs_crypt_complete(struct crypto_async_request *req, int err)
1716{
1717 struct cifs_crypt_result *res = req->data;
1718
1719 if (err == -EINPROGRESS)
1720 return;
1721
1722 res->err = err;
1723 complete(&res->completion);
1724}
1725
61cfac6f
PS		 1726static int
1727smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
1728{
1729 struct cifs_ses *ses;
1730 u8 *ses_enc_key;
1731
1732 spin_lock(&cifs_tcp_ses_lock);
1733 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
1734 if (ses->Suid != ses_id)
1735 continue;
1736 ses_enc_key = enc ? ses->smb3encryptionkey :
1737 ses->smb3decryptionkey;
1738 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
1739 spin_unlock(&cifs_tcp_ses_lock);
1740 return 0;
1741 }
1742 spin_unlock(&cifs_tcp_ses_lock);
1743
1744 return 1;
1745}
026e93dc
PS		 1746/*
1747 * Encrypt or decrypt @rqst message. @rqst has the following format:
1748 * iov[0] - transform header (associate data),
1749 * iov[1-N] and pages - data to encrypt.
1750 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
1751 * untouched.
1752 */
1753static int
1754crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc)
1755{
1756 struct smb2_transform_hdr *tr_hdr =
1757 (struct smb2_transform_hdr *)rqst->rq_iov[0].iov_base;
1758 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24;
026e93dc
PS		 1759 int rc = 0;
1760 struct scatterlist *sg;
1761 u8 sign[SMB2_SIGNATURE_SIZE] = {};
61cfac6f 1762 u8 key[SMB3_SIGN_KEY_SIZE];
026e93dc
PS		 1763 struct aead_request *req;
1764 char *iv;
1765 unsigned int iv_len;
1766 struct cifs_crypt_result result = {0, };
1767 struct crypto_aead *tfm;
1768 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
1769
1770 init_completion(&result.completion);
1771
61cfac6f
PS		 1772 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
1773 if (rc) {
1774 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
1775 enc ? "en" : "de");
026e93dc
PS		 1776 return 0;
1777 }
1778
1779 rc = smb3_crypto_aead_allocate(server);
1780 if (rc) {
1781 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
1782 return rc;
1783 }
1784
1785 tfm = enc ? server->secmech.ccmaesencrypt :
1786 server->secmech.ccmaesdecrypt;
61cfac6f 1787 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
026e93dc
PS		 1788 if (rc) {
1789 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
1790 return rc;
1791 }
1792
1793 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
1794 if (rc) {
1795 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
1796 return rc;
1797 }
1798
1799 req = aead_request_alloc(tfm, GFP_KERNEL);
1800 if (!req) {
1801 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
1802 return -ENOMEM;
1803 }
1804
1805 if (!enc) {
1806 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
1807 crypt_len += SMB2_SIGNATURE_SIZE;
1808 }
1809
1810 sg = init_sg(rqst, sign);
1811 if (!sg) {
1812 cifs_dbg(VFS, "%s: Failed to init sg %d", __func__, rc);
1813 goto free_req;
1814 }
1815
1816 iv_len = crypto_aead_ivsize(tfm);
1817 iv = kzalloc(iv_len, GFP_KERNEL);
1818 if (!iv) {
1819 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
1820 goto free_sg;
1821 }
1822 iv[0] = 3;
1823 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
1824
1825 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
1826 aead_request_set_ad(req, assoc_data_len);
1827
1828 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
1829 cifs_crypt_complete, &result);
1830
1831 rc = enc ? crypto_aead_encrypt(req) : crypto_aead_decrypt(req);
1832
1833 if (rc == -EINPROGRESS || rc == -EBUSY) {
1834 wait_for_completion(&result.completion);
1835 rc = result.err;
1836 }
1837
1838 if (!rc && enc)
1839 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
1840
1841 kfree(iv);
1842free_sg:
1843 kfree(sg);
1844free_req:
1845 kfree(req);
1846 return rc;
1847}
1848
1849static int
1850smb3_init_transform_rq(struct TCP_Server_Info *server, struct smb_rqst *new_rq,
1851 struct smb_rqst *old_rq)
1852{
1853 struct kvec *iov;
1854 struct page **pages;
1855 struct smb2_transform_hdr *tr_hdr;
1856 unsigned int npages = old_rq->rq_npages;
1857 int i;
1858 int rc = -ENOMEM;
1859
1860 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
1861 if (!pages)
1862 return rc;
1863
1864 new_rq->rq_pages = pages;
1865 new_rq->rq_npages = old_rq->rq_npages;
1866 new_rq->rq_pagesz = old_rq->rq_pagesz;
1867 new_rq->rq_tailsz = old_rq->rq_tailsz;
1868
1869 for (i = 0; i < npages; i++) {
1870 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
1871 if (!pages[i])
1872 goto err_free_pages;
1873 }
1874
1875 iov = kmalloc_array(old_rq->rq_nvec, sizeof(struct kvec), GFP_KERNEL);
1876 if (!iov)
1877 goto err_free_pages;
1878
1879 /* copy all iovs from the old except the 1st one (rfc1002 length) */
1880 memcpy(&iov[1], &old_rq->rq_iov[1],
1881 sizeof(struct kvec) * (old_rq->rq_nvec - 1));
1882 new_rq->rq_iov = iov;
1883 new_rq->rq_nvec = old_rq->rq_nvec;
1884
1885 tr_hdr = kmalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL);
1886 if (!tr_hdr)
1887 goto err_free_iov;
1888
1889 /* fill the 1st iov with a transform header */
1890 fill_transform_hdr(tr_hdr, old_rq);
1891 new_rq->rq_iov[0].iov_base = tr_hdr;
1892 new_rq->rq_iov[0].iov_len = sizeof(struct smb2_transform_hdr);
1893
1894 /* copy pages form the old */
1895 for (i = 0; i < npages; i++) {
1896 char *dst = kmap(new_rq->rq_pages[i]);
1897 char *src = kmap(old_rq->rq_pages[i]);
1898 unsigned int len = (i < npages - 1) ? new_rq->rq_pagesz :
1899 new_rq->rq_tailsz;
1900 memcpy(dst, src, len);
1901 kunmap(new_rq->rq_pages[i]);
1902 kunmap(old_rq->rq_pages[i]);
1903 }
1904
1905 rc = crypt_message(server, new_rq, 1);
1906 cifs_dbg(FYI, "encrypt message returned %d", rc);
1907 if (rc)
1908 goto err_free_tr_hdr;
1909
1910 return rc;
1911
1912err_free_tr_hdr:
1913 kfree(tr_hdr);
1914err_free_iov:
1915 kfree(iov);
1916err_free_pages:
1917 for (i = i - 1; i >= 0; i--)
1918 put_page(pages[i]);
1919 kfree(pages);
1920 return rc;
1921}
1922
1923static void
1924smb3_free_transform_rq(struct smb_rqst *rqst)
1925{
1926 int i = rqst->rq_npages - 1;
1927
1928 for (; i >= 0; i--)
1929 put_page(rqst->rq_pages[i]);
1930 kfree(rqst->rq_pages);
1931 /* free transform header */
1932 kfree(rqst->rq_iov[0].iov_base);
1933 kfree(rqst->rq_iov);
1934}
1935
4326ed2f
PS		 1936static int
1937smb3_is_transform_hdr(void *buf)
1938{
1939 struct smb2_transform_hdr *trhdr = buf;
1940
1941 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
1942}
1943
1944static int
1945decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
1946 unsigned int buf_data_size, struct page **pages,
1947 unsigned int npages, unsigned int page_data_size)
1948{
1949 struct kvec iov[2];
1950 struct smb_rqst rqst = {NULL};
1951 struct smb2_hdr *hdr;
1952 int rc;
1953
1954 iov[0].iov_base = buf;
1955 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
1956 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
1957 iov[1].iov_len = buf_data_size;
1958
1959 rqst.rq_iov = iov;
1960 rqst.rq_nvec = 2;
1961 rqst.rq_pages = pages;
1962 rqst.rq_npages = npages;
1963 rqst.rq_pagesz = PAGE_SIZE;
1964 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
1965
1966 rc = crypt_message(server, &rqst, 0);
1967 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
1968
1969 if (rc)
1970 return rc;
1971
1972 memmove(buf + 4, iov[1].iov_base, buf_data_size);
1973 hdr = (struct smb2_hdr *)buf;
1974 hdr->smb2_buf_length = cpu_to_be32(buf_data_size + page_data_size);
1975 server->total_read = buf_data_size + page_data_size + 4;
1976
1977 return rc;
1978}
1979
c42a6abe
PS		 1980static int
1981read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
1982 unsigned int npages, unsigned int len)
1983{
1984 int i;
1985 int length;
1986
1987 for (i = 0; i < npages; i++) {
1988 struct page *page = pages[i];
1989 size_t n;
1990
1991 n = len;
1992 if (len >= PAGE_SIZE) {
1993 /* enough data to fill the page */
1994 n = PAGE_SIZE;
1995 len -= n;
1996 } else {
1997 zero_user(page, len, PAGE_SIZE - len);
1998 len = 0;
1999 }
2000 length = cifs_read_page_from_socket(server, page, n);
2001 if (length < 0)
2002 return length;
2003 server->total_read += length;
2004 }
2005
2006 return 0;
2007}
2008
2009static int
2010init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
2011 unsigned int cur_off, struct bio_vec **page_vec)
2012{
2013 struct bio_vec *bvec;
2014 int i;
2015
2016 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
2017 if (!bvec)
2018 return -ENOMEM;
2019
2020 for (i = 0; i < npages; i++) {
2021 bvec[i].bv_page = pages[i];
2022 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
2023 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
2024 data_size -= bvec[i].bv_len;
2025 }
2026
2027 if (data_size != 0) {
2028 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
2029 kfree(bvec);
2030 return -EIO;
2031 }
2032
2033 *page_vec = bvec;
2034 return 0;
2035}
2036
4326ed2f
PS		 2037static int
2038handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
2039 char *buf, unsigned int buf_len, struct page **pages,
2040 unsigned int npages, unsigned int page_data_size)
2041{
2042 unsigned int data_offset;
2043 unsigned int data_len;
c42a6abe
PS		 2044 unsigned int cur_off;
2045 unsigned int cur_page_idx;
2046 unsigned int pad_len;
4326ed2f
PS		 2047 struct cifs_readdata *rdata = mid->callback_data;
2048 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
2049 struct bio_vec *bvec = NULL;
2050 struct iov_iter iter;
2051 struct kvec iov;
2052 int length;
2053
2054 if (shdr->Command != SMB2_READ) {
2055 cifs_dbg(VFS, "only big read responses are supported\n");
2056 return -ENOTSUPP;
2057 }
2058
2059 if (server->ops->is_status_pending &&
2060 server->ops->is_status_pending(buf, server, 0))
2061 return -1;
2062
2063 rdata->result = server->ops->map_error(buf, false);
2064 if (rdata->result != 0) {
2065 cifs_dbg(FYI, "%s: server returned error %d\n",
2066 __func__, rdata->result);
2067 dequeue_mid(mid, rdata->result);
2068 return 0;
2069 }
2070
2071 data_offset = server->ops->read_data_offset(buf) + 4;
2072 data_len = server->ops->read_data_length(buf);
2073
2074 if (data_offset < server->vals->read_rsp_size) {
2075 /*
2076 * win2k8 sometimes sends an offset of 0 when the read
2077 * is beyond the EOF. Treat it as if the data starts just after
2078 * the header.
2079 */
2080 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
2081 __func__, data_offset);
2082 data_offset = server->vals->read_rsp_size;
2083 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
2084 /* data_offset is beyond the end of smallbuf */
2085 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
2086 __func__, data_offset);
2087 rdata->result = -EIO;
2088 dequeue_mid(mid, rdata->result);
2089 return 0;
2090 }
2091
c42a6abe
PS		 2092 pad_len = data_offset - server->vals->read_rsp_size;
2093
4326ed2f
PS		 2094 if (buf_len <= data_offset) {
2095 /* read response payload is in pages */
c42a6abe
PS		 2096 cur_page_idx = pad_len / PAGE_SIZE;
2097 cur_off = pad_len % PAGE_SIZE;
2098
2099 if (cur_page_idx != 0) {
2100 /* data offset is beyond the 1st page of response */
2101 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
2102 __func__, data_offset);
2103 rdata->result = -EIO;
2104 dequeue_mid(mid, rdata->result);
2105 return 0;
2106 }
2107
2108 if (data_len > page_data_size - pad_len) {
2109 /* data_len is corrupt -- discard frame */
2110 rdata->result = -EIO;
2111 dequeue_mid(mid, rdata->result);
2112 return 0;
2113 }
2114
2115 rdata->result = init_read_bvec(pages, npages, page_data_size,
2116 cur_off, &bvec);
2117 if (rdata->result != 0) {
2118 dequeue_mid(mid, rdata->result);
2119 return 0;
2120 }
2121
2122 iov_iter_bvec(&iter, WRITE | ITER_BVEC, bvec, npages, data_len);
4326ed2f
PS		 2123 } else if (buf_len >= data_offset + data_len) {
2124 /* read response payload is in buf */
2125 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
2126 iov.iov_base = buf + data_offset;
2127 iov.iov_len = data_len;
2128 iov_iter_kvec(&iter, WRITE | ITER_KVEC, &iov, 1, data_len);
2129 } else {
2130 /* read response payload cannot be in both buf and pages */
2131 WARN_ONCE(1, "buf can not contain only a part of read data");
2132 rdata->result = -EIO;
2133 dequeue_mid(mid, rdata->result);
2134 return 0;
2135 }
2136
2137 /* set up first iov for signature check */
2138 rdata->iov[0].iov_base = buf;
2139 rdata->iov[0].iov_len = 4;
2140 rdata->iov[1].iov_base = buf + 4;
2141 rdata->iov[1].iov_len = server->vals->read_rsp_size - 4;
2142 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
2143 rdata->iov[0].iov_base, server->vals->read_rsp_size);
2144
2145 length = rdata->copy_into_pages(server, rdata, &iter);
2146
2147 kfree(bvec);
2148
2149 if (length < 0)
2150 return length;
2151
2152 dequeue_mid(mid, false);
2153 return length;
2154}
2155
c42a6abe
PS		 2156static int
2157receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2158{
2159 char *buf = server->smallbuf;
2160 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2161 unsigned int npages;
2162 struct page **pages;
2163 unsigned int len;
2164 unsigned int buflen = get_rfc1002_length(buf) + 4;
2165 int rc;
2166 int i = 0;
2167
2168 len = min_t(unsigned int, buflen, server->vals->read_rsp_size - 4 +
2169 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
2170
2171 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
2172 if (rc < 0)
2173 return rc;
2174 server->total_read += rc;
2175
2176 len = le32_to_cpu(tr_hdr->OriginalMessageSize) + 4 -
2177 server->vals->read_rsp_size;
2178 npages = DIV_ROUND_UP(len, PAGE_SIZE);
2179
2180 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
2181 if (!pages) {
2182 rc = -ENOMEM;
2183 goto discard_data;
2184 }
2185
2186 for (; i < npages; i++) {
2187 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2188 if (!pages[i]) {
2189 rc = -ENOMEM;
2190 goto discard_data;
2191 }
2192 }
2193
2194 /* read read data into pages */
2195 rc = read_data_into_pages(server, pages, npages, len);
2196 if (rc)
2197 goto free_pages;
2198
350be257 2199 rc = cifs_discard_remaining_data(server);
c42a6abe
PS		 2200 if (rc)
2201 goto free_pages;
2202
2203 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size - 4,
2204 pages, npages, len);
2205 if (rc)
2206 goto free_pages;
2207
2208 *mid = smb2_find_mid(server, buf);
2209 if (*mid == NULL)
2210 cifs_dbg(FYI, "mid not found\n");
2211 else {
2212 cifs_dbg(FYI, "mid found\n");
2213 (*mid)->decrypted = true;
2214 rc = handle_read_data(server, *mid, buf,
2215 server->vals->read_rsp_size,
2216 pages, npages, len);
2217 }
2218
2219free_pages:
2220 for (i = i - 1; i >= 0; i--)
2221 put_page(pages[i]);
2222 kfree(pages);
2223 return rc;
2224discard_data:
350be257 2225 cifs_discard_remaining_data(server);
c42a6abe
PS		 2226 goto free_pages;
2227}
2228
4326ed2f
PS		 2229static int
2230receive_encrypted_standard(struct TCP_Server_Info *server,
2231 struct mid_q_entry **mid)
2232{
2233 int length;
2234 char *buf = server->smallbuf;
2235 unsigned int pdu_length = get_rfc1002_length(buf);
2236 unsigned int buf_size;
2237 struct mid_q_entry *mid_entry;
2238
2239 /* switch to large buffer if too big for a small one */
2240 if (pdu_length + 4 > MAX_CIFS_SMALL_BUFFER_SIZE) {
2241 server->large_buf = true;
2242 memcpy(server->bigbuf, buf, server->total_read);
2243 buf = server->bigbuf;
2244 }
2245
2246 /* now read the rest */
2247 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
2248 pdu_length - HEADER_SIZE(server) + 1 + 4);
2249 if (length < 0)
2250 return length;
2251 server->total_read += length;
2252
2253 buf_size = pdu_length + 4 - sizeof(struct smb2_transform_hdr);
2254 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
2255 if (length)
2256 return length;
2257
2258 mid_entry = smb2_find_mid(server, buf);
2259 if (mid_entry == NULL)
2260 cifs_dbg(FYI, "mid not found\n");
2261 else {
2262 cifs_dbg(FYI, "mid found\n");
2263 mid_entry->decrypted = true;
2264 }
2265
2266 *mid = mid_entry;
2267
2268 if (mid_entry && mid_entry->handle)
2269 return mid_entry->handle(server, mid_entry);
2270
2271 return cifs_handle_standard(server, mid_entry);
2272}
2273
2274static int
2275smb3_receive_transform(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2276{
2277 char *buf = server->smallbuf;
2278 unsigned int pdu_length = get_rfc1002_length(buf);
2279 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2280 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2281
2282 if (pdu_length + 4 < sizeof(struct smb2_transform_hdr) +
2283 sizeof(struct smb2_sync_hdr)) {
2284 cifs_dbg(VFS, "Transform message is too small (%u)\n",
2285 pdu_length);
2286 cifs_reconnect(server);
2287 wake_up(&server->response_q);
2288 return -ECONNABORTED;
2289 }
2290
2291 if (pdu_length + 4 < orig_len + sizeof(struct smb2_transform_hdr)) {
2292 cifs_dbg(VFS, "Transform message is broken\n");
2293 cifs_reconnect(server);
2294 wake_up(&server->response_q);
2295 return -ECONNABORTED;
2296 }
2297
c42a6abe
PS		 2298 if (pdu_length + 4 > CIFSMaxBufSize + MAX_HEADER_SIZE(server))
2299 return receive_encrypted_read(server, mid);
4326ed2f
PS		 2300
2301 return receive_encrypted_standard(server, mid);
2302}
2303
2304int
2305smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
2306{
2307 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
2308
2309 return handle_read_data(server, mid, buf, get_rfc1002_length(buf) + 4,
2310 NULL, 0, 0);
2311}
2312
53ef1016 2313struct smb_version_operations smb20_operations = {
027e8eec 2314 .compare_fids = smb2_compare_fids,
2dc7e1c0 2315 .setup_request = smb2_setup_request,
c95b8eed 2316 .setup_async_request = smb2_setup_async_request,
2dc7e1c0 2317 .check_receive = smb2_check_receive,
28ea5290
PS		 2318 .add_credits = smb2_add_credits,
2319 .set_credits = smb2_set_credits,
2320 .get_credits_field = smb2_get_credits_field,
2321 .get_credits = smb2_get_credits,
cb7e9eab 2322 .wait_mtu_credits = cifs_wait_mtu_credits,
2dc7e1c0 2323 .get_next_mid = smb2_get_next_mid,
09a4707e
PS		 2324 .read_data_offset = smb2_read_data_offset,
2325 .read_data_length = smb2_read_data_length,
2326 .map_error = map_smb2_to_linux_error,
093b2bda
PS		 2327 .find_mid = smb2_find_mid,
2328 .check_message = smb2_check_message,
2329 .dump_detail = smb2_dump_detail,
d60622eb
PS		 2330 .clear_stats = smb2_clear_stats,
2331 .print_stats = smb2_print_stats,
983c88a4 2332 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 2333 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 2334 .downgrade_oplock = smb2_downgrade_oplock,
ec2e4523
PS		 2335 .need_neg = smb2_need_neg,
2336 .negotiate = smb2_negotiate,
3a3bab50
PS		 2337 .negotiate_wsize = smb2_negotiate_wsize,
2338 .negotiate_rsize = smb2_negotiate_rsize,
5478f9ba
PS		 2339 .sess_setup = SMB2_sess_setup,
2340 .logoff = SMB2_logoff,
faaf946a
PS		 2341 .tree_connect = SMB2_tcon,
2342 .tree_disconnect = SMB2_tdis,
34f62640 2343 .qfs_tcon = smb2_qfs_tcon,
2503a0db 2344 .is_path_accessible = smb2_is_path_accessible,
9094fad1
PS		 2345 .can_echo = smb2_can_echo,
2346 .echo = SMB2_echo,
be4cb9e3
PS		 2347 .query_path_info = smb2_query_path_info,
2348 .get_srv_inum = smb2_get_srv_inum,
b7546bc5 2349 .query_file_info = smb2_query_file_info,
c839ff24
PS		 2350 .set_path_size = smb2_set_path_size,
2351 .set_file_size = smb2_set_file_size,
1feeaac7 2352 .set_file_info = smb2_set_file_info,
64a5cfa6 2353 .set_compression = smb2_set_compression,
a0e73183
PS		 2354 .mkdir = smb2_mkdir,
2355 .mkdir_setinfo = smb2_mkdir_setinfo,
1a500f01 2356 .rmdir = smb2_rmdir,
cbe6f439 2357 .unlink = smb2_unlink,
35143eb5 2358 .rename = smb2_rename_path,
568798cc 2359 .create_hardlink = smb2_create_hardlink,
b42bf888 2360 .query_symlink = smb2_query_symlink,
5b23c97d
SP		 2361 .query_mf_symlink = smb3_query_mf_symlink,
2362 .create_mf_symlink = smb3_create_mf_symlink,
f0df737e
PS		 2363 .open = smb2_open_file,
2364 .set_fid = smb2_set_fid,
2365 .close = smb2_close_file,
7a5cfb19 2366 .flush = smb2_flush_file,
09a4707e 2367 .async_readv = smb2_async_readv,
33319141 2368 .async_writev = smb2_async_writev,
d8e05039 2369 .sync_read = smb2_sync_read,
009d3443 2370 .sync_write = smb2_sync_write,
d324f08d
PS		 2371 .query_dir_first = smb2_query_dir_first,
2372 .query_dir_next = smb2_query_dir_next,
2373 .close_dir = smb2_close_dir,
2374 .calc_smb_size = smb2_calc_size,
2e44b288 2375 .is_status_pending = smb2_is_status_pending,
983c88a4 2376 .oplock_response = smb2_oplock_response,
6fc05c25 2377 .queryfs = smb2_queryfs,
f7ba7fe6
PS		 2378 .mand_lock = smb2_mand_lock,
2379 .mand_unlock_range = smb2_unlock_range,
b140799a 2380 .push_mand_locks = smb2_push_mandatory_locks,
b8c32dbb
PS		 2381 .get_lease_key = smb2_get_lease_key,
2382 .set_lease_key = smb2_set_lease_key,
2383 .new_lease_key = smb2_new_lease_key,
38107d45 2384 .calc_signature = smb2_calc_signature,
53ef1016
PS		 2385 .is_read_op = smb2_is_read_op,
2386 .set_oplock_level = smb2_set_oplock_level,
a41a28bd 2387 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 2388 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 2389 .copychunk_range = smb2_copychunk_range,
7f6c5008 2390 .wp_retry_size = smb2_wp_retry_size,
52755808 2391 .dir_needs_close = smb2_dir_needs_close,
9d49640a 2392 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2393 .select_sectype = smb2_select_sectype,
38107d45
SF		 2394};
2395
53ef1016
PS		 2396struct smb_version_operations smb21_operations = {
2397 .compare_fids = smb2_compare_fids,
2398 .setup_request = smb2_setup_request,
2399 .setup_async_request = smb2_setup_async_request,
2400 .check_receive = smb2_check_receive,
2401 .add_credits = smb2_add_credits,
2402 .set_credits = smb2_set_credits,
2403 .get_credits_field = smb2_get_credits_field,
2404 .get_credits = smb2_get_credits,
cb7e9eab 2405 .wait_mtu_credits = smb2_wait_mtu_credits,
53ef1016
PS		 2406 .get_next_mid = smb2_get_next_mid,
2407 .read_data_offset = smb2_read_data_offset,
2408 .read_data_length = smb2_read_data_length,
2409 .map_error = map_smb2_to_linux_error,
2410 .find_mid = smb2_find_mid,
2411 .check_message = smb2_check_message,
2412 .dump_detail = smb2_dump_detail,
2413 .clear_stats = smb2_clear_stats,
2414 .print_stats = smb2_print_stats,
2415 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 2416 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 2417 .downgrade_oplock = smb2_downgrade_oplock,
53ef1016
PS		 2418 .need_neg = smb2_need_neg,
2419 .negotiate = smb2_negotiate,
2420 .negotiate_wsize = smb2_negotiate_wsize,
2421 .negotiate_rsize = smb2_negotiate_rsize,
2422 .sess_setup = SMB2_sess_setup,
2423 .logoff = SMB2_logoff,
2424 .tree_connect = SMB2_tcon,
2425 .tree_disconnect = SMB2_tdis,
34f62640 2426 .qfs_tcon = smb2_qfs_tcon,
53ef1016
PS		 2427 .is_path_accessible = smb2_is_path_accessible,
2428 .can_echo = smb2_can_echo,
2429 .echo = SMB2_echo,
2430 .query_path_info = smb2_query_path_info,
2431 .get_srv_inum = smb2_get_srv_inum,
2432 .query_file_info = smb2_query_file_info,
2433 .set_path_size = smb2_set_path_size,
2434 .set_file_size = smb2_set_file_size,
2435 .set_file_info = smb2_set_file_info,
64a5cfa6 2436 .set_compression = smb2_set_compression,
53ef1016
PS		 2437 .mkdir = smb2_mkdir,
2438 .mkdir_setinfo = smb2_mkdir_setinfo,
2439 .rmdir = smb2_rmdir,
2440 .unlink = smb2_unlink,
2441 .rename = smb2_rename_path,
2442 .create_hardlink = smb2_create_hardlink,
2443 .query_symlink = smb2_query_symlink,
c22870ea 2444 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 2445 .create_mf_symlink = smb3_create_mf_symlink,
53ef1016
PS		 2446 .open = smb2_open_file,
2447 .set_fid = smb2_set_fid,
2448 .close = smb2_close_file,
2449 .flush = smb2_flush_file,
2450 .async_readv = smb2_async_readv,
2451 .async_writev = smb2_async_writev,
2452 .sync_read = smb2_sync_read,
2453 .sync_write = smb2_sync_write,
2454 .query_dir_first = smb2_query_dir_first,
2455 .query_dir_next = smb2_query_dir_next,
2456 .close_dir = smb2_close_dir,
2457 .calc_smb_size = smb2_calc_size,
2458 .is_status_pending = smb2_is_status_pending,
2459 .oplock_response = smb2_oplock_response,
2460 .queryfs = smb2_queryfs,
2461 .mand_lock = smb2_mand_lock,
2462 .mand_unlock_range = smb2_unlock_range,
2463 .push_mand_locks = smb2_push_mandatory_locks,
2464 .get_lease_key = smb2_get_lease_key,
2465 .set_lease_key = smb2_set_lease_key,
2466 .new_lease_key = smb2_new_lease_key,
2467 .calc_signature = smb2_calc_signature,
2468 .is_read_op = smb21_is_read_op,
2469 .set_oplock_level = smb21_set_oplock_level,
a41a28bd 2470 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 2471 .parse_lease_buf = smb2_parse_lease_buf,
312bbc59 2472 .copychunk_range = smb2_copychunk_range,
7f6c5008 2473 .wp_retry_size = smb2_wp_retry_size,
52755808 2474 .dir_needs_close = smb2_dir_needs_close,
834170c8 2475 .enum_snapshots = smb3_enum_snapshots,
9d49640a 2476 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2477 .select_sectype = smb2_select_sectype,
53ef1016 2478};
38107d45
SF		 2479
2480struct smb_version_operations smb30_operations = {
2481 .compare_fids = smb2_compare_fids,
2482 .setup_request = smb2_setup_request,
2483 .setup_async_request = smb2_setup_async_request,
2484 .check_receive = smb2_check_receive,
2485 .add_credits = smb2_add_credits,
2486 .set_credits = smb2_set_credits,
2487 .get_credits_field = smb2_get_credits_field,
2488 .get_credits = smb2_get_credits,
cb7e9eab 2489 .wait_mtu_credits = smb2_wait_mtu_credits,
38107d45
SF		 2490 .get_next_mid = smb2_get_next_mid,
2491 .read_data_offset = smb2_read_data_offset,
2492 .read_data_length = smb2_read_data_length,
2493 .map_error = map_smb2_to_linux_error,
2494 .find_mid = smb2_find_mid,
2495 .check_message = smb2_check_message,
2496 .dump_detail = smb2_dump_detail,
2497 .clear_stats = smb2_clear_stats,
2498 .print_stats = smb2_print_stats,
769ee6a4 2499 .dump_share_caps = smb2_dump_share_caps,
38107d45 2500 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 2501 .handle_cancelled_mid = smb2_handle_cancelled_mid,
c11f1df5 2502 .downgrade_oplock = smb2_downgrade_oplock,
38107d45
SF		 2503 .need_neg = smb2_need_neg,
2504 .negotiate = smb2_negotiate,
2505 .negotiate_wsize = smb2_negotiate_wsize,
2506 .negotiate_rsize = smb2_negotiate_rsize,
2507 .sess_setup = SMB2_sess_setup,
2508 .logoff = SMB2_logoff,
2509 .tree_connect = SMB2_tcon,
2510 .tree_disconnect = SMB2_tdis,
af6a12ea 2511 .qfs_tcon = smb3_qfs_tcon,
38107d45
SF		 2512 .is_path_accessible = smb2_is_path_accessible,
2513 .can_echo = smb2_can_echo,
2514 .echo = SMB2_echo,
2515 .query_path_info = smb2_query_path_info,
2516 .get_srv_inum = smb2_get_srv_inum,
2517 .query_file_info = smb2_query_file_info,
2518 .set_path_size = smb2_set_path_size,
2519 .set_file_size = smb2_set_file_size,
2520 .set_file_info = smb2_set_file_info,
64a5cfa6 2521 .set_compression = smb2_set_compression,
38107d45
SF		 2522 .mkdir = smb2_mkdir,
2523 .mkdir_setinfo = smb2_mkdir_setinfo,
2524 .rmdir = smb2_rmdir,
2525 .unlink = smb2_unlink,
2526 .rename = smb2_rename_path,
2527 .create_hardlink = smb2_create_hardlink,
b42bf888 2528 .query_symlink = smb2_query_symlink,
c22870ea 2529 .query_mf_symlink = smb3_query_mf_symlink,
5ab97578 2530 .create_mf_symlink = smb3_create_mf_symlink,
38107d45
SF		 2531 .open = smb2_open_file,
2532 .set_fid = smb2_set_fid,
2533 .close = smb2_close_file,
2534 .flush = smb2_flush_file,
2535 .async_readv = smb2_async_readv,
2536 .async_writev = smb2_async_writev,
2537 .sync_read = smb2_sync_read,
2538 .sync_write = smb2_sync_write,
2539 .query_dir_first = smb2_query_dir_first,
2540 .query_dir_next = smb2_query_dir_next,
2541 .close_dir = smb2_close_dir,
2542 .calc_smb_size = smb2_calc_size,
2543 .is_status_pending = smb2_is_status_pending,
2544 .oplock_response = smb2_oplock_response,
2545 .queryfs = smb2_queryfs,
2546 .mand_lock = smb2_mand_lock,
2547 .mand_unlock_range = smb2_unlock_range,
2548 .push_mand_locks = smb2_push_mandatory_locks,
2549 .get_lease_key = smb2_get_lease_key,
2550 .set_lease_key = smb2_set_lease_key,
2551 .new_lease_key = smb2_new_lease_key,
373512ec 2552 .generate_signingkey = generate_smb30signingkey,
38107d45 2553 .calc_signature = smb3_calc_signature,
b3152e2c 2554 .set_integrity = smb3_set_integrity,
53ef1016 2555 .is_read_op = smb21_is_read_op,
42873b0a 2556 .set_oplock_level = smb3_set_oplock_level,
f047390a
PS		 2557 .create_lease_buf = smb3_create_lease_buf,
2558 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 2559 .copychunk_range = smb2_copychunk_range,
ca9e7a1c 2560 .duplicate_extents = smb2_duplicate_extents,
ff1c038a 2561 .validate_negotiate = smb3_validate_negotiate,
7f6c5008 2562 .wp_retry_size = smb2_wp_retry_size,
52755808 2563 .dir_needs_close = smb2_dir_needs_close,
31742c5a 2564 .fallocate = smb3_fallocate,
834170c8 2565 .enum_snapshots = smb3_enum_snapshots,
026e93dc
PS		 2566 .init_transform_rq = smb3_init_transform_rq,
2567 .free_transform_rq = smb3_free_transform_rq,
4326ed2f
PS		 2568 .is_transform_hdr = smb3_is_transform_hdr,
2569 .receive_transform = smb3_receive_transform,
9d49640a 2570 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2571 .select_sectype = smb2_select_sectype,
1080ef75
SF		 2572};
2573
aab1893d
SF		 2574#ifdef CONFIG_CIFS_SMB311
2575struct smb_version_operations smb311_operations = {
2576 .compare_fids = smb2_compare_fids,
2577 .setup_request = smb2_setup_request,
2578 .setup_async_request = smb2_setup_async_request,
2579 .check_receive = smb2_check_receive,
2580 .add_credits = smb2_add_credits,
2581 .set_credits = smb2_set_credits,
2582 .get_credits_field = smb2_get_credits_field,
2583 .get_credits = smb2_get_credits,
2584 .wait_mtu_credits = smb2_wait_mtu_credits,
2585 .get_next_mid = smb2_get_next_mid,
2586 .read_data_offset = smb2_read_data_offset,
2587 .read_data_length = smb2_read_data_length,
2588 .map_error = map_smb2_to_linux_error,
2589 .find_mid = smb2_find_mid,
2590 .check_message = smb2_check_message,
2591 .dump_detail = smb2_dump_detail,
2592 .clear_stats = smb2_clear_stats,
2593 .print_stats = smb2_print_stats,
2594 .dump_share_caps = smb2_dump_share_caps,
2595 .is_oplock_break = smb2_is_valid_oplock_break,
38bd4906 2596 .handle_cancelled_mid = smb2_handle_cancelled_mid,
aab1893d
SF		 2597 .downgrade_oplock = smb2_downgrade_oplock,
2598 .need_neg = smb2_need_neg,
2599 .negotiate = smb2_negotiate,
2600 .negotiate_wsize = smb2_negotiate_wsize,
2601 .negotiate_rsize = smb2_negotiate_rsize,
2602 .sess_setup = SMB2_sess_setup,
2603 .logoff = SMB2_logoff,
2604 .tree_connect = SMB2_tcon,
2605 .tree_disconnect = SMB2_tdis,
2606 .qfs_tcon = smb3_qfs_tcon,
2607 .is_path_accessible = smb2_is_path_accessible,
2608 .can_echo = smb2_can_echo,
2609 .echo = SMB2_echo,
2610 .query_path_info = smb2_query_path_info,
2611 .get_srv_inum = smb2_get_srv_inum,
2612 .query_file_info = smb2_query_file_info,
2613 .set_path_size = smb2_set_path_size,
2614 .set_file_size = smb2_set_file_size,
2615 .set_file_info = smb2_set_file_info,
2616 .set_compression = smb2_set_compression,
2617 .mkdir = smb2_mkdir,
2618 .mkdir_setinfo = smb2_mkdir_setinfo,
2619 .rmdir = smb2_rmdir,
2620 .unlink = smb2_unlink,
2621 .rename = smb2_rename_path,
2622 .create_hardlink = smb2_create_hardlink,
2623 .query_symlink = smb2_query_symlink,
2624 .query_mf_symlink = smb3_query_mf_symlink,
2625 .create_mf_symlink = smb3_create_mf_symlink,
2626 .open = smb2_open_file,
2627 .set_fid = smb2_set_fid,
2628 .close = smb2_close_file,
2629 .flush = smb2_flush_file,
2630 .async_readv = smb2_async_readv,
2631 .async_writev = smb2_async_writev,
2632 .sync_read = smb2_sync_read,
2633 .sync_write = smb2_sync_write,
2634 .query_dir_first = smb2_query_dir_first,
2635 .query_dir_next = smb2_query_dir_next,
2636 .close_dir = smb2_close_dir,
2637 .calc_smb_size = smb2_calc_size,
2638 .is_status_pending = smb2_is_status_pending,
2639 .oplock_response = smb2_oplock_response,
2640 .queryfs = smb2_queryfs,
2641 .mand_lock = smb2_mand_lock,
2642 .mand_unlock_range = smb2_unlock_range,
2643 .push_mand_locks = smb2_push_mandatory_locks,
2644 .get_lease_key = smb2_get_lease_key,
2645 .set_lease_key = smb2_set_lease_key,
2646 .new_lease_key = smb2_new_lease_key,
373512ec 2647 .generate_signingkey = generate_smb311signingkey,
aab1893d 2648 .calc_signature = smb3_calc_signature,
b3152e2c 2649 .set_integrity = smb3_set_integrity,
aab1893d
SF		 2650 .is_read_op = smb21_is_read_op,
2651 .set_oplock_level = smb3_set_oplock_level,
2652 .create_lease_buf = smb3_create_lease_buf,
2653 .parse_lease_buf = smb3_parse_lease_buf,
312bbc59 2654 .copychunk_range = smb2_copychunk_range,
02b16665 2655 .duplicate_extents = smb2_duplicate_extents,
aab1893d
SF		 2656/* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
2657 .wp_retry_size = smb2_wp_retry_size,
2658 .dir_needs_close = smb2_dir_needs_close,
2659 .fallocate = smb3_fallocate,
834170c8 2660 .enum_snapshots = smb3_enum_snapshots,
026e93dc
PS		 2661 .init_transform_rq = smb3_init_transform_rq,
2662 .free_transform_rq = smb3_free_transform_rq,
4326ed2f
PS		 2663 .is_transform_hdr = smb3_is_transform_hdr,
2664 .receive_transform = smb3_receive_transform,
9d49640a 2665 .get_dfs_refer = smb2_get_dfs_refer,
ef65aaed 2666 .select_sectype = smb2_select_sectype,
aab1893d
SF		 2667};
2668#endif /* CIFS_SMB311 */
2669
dd446b16
SF		 2670struct smb_version_values smb20_values = {
2671 .version_string = SMB20_VERSION_STRING,
2672 .protocol_id = SMB20_PROT_ID,
2673 .req_capabilities = 0, /* MBZ */
2674 .large_lock_type = 0,
2675 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2676 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2677 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2678 .header_size = sizeof(struct smb2_hdr),
2679 .max_header_size = MAX_SMB2_HDR_SIZE,
2680 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2681 .lock_cmd = SMB2_LOCK,
2682 .cap_unix = 0,
2683 .cap_nt_find = SMB2_NT_FIND,
2684 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 2685 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2686 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 2687 .create_lease_size = sizeof(struct create_lease),
dd446b16
SF		 2688};
2689
1080ef75
SF		 2690struct smb_version_values smb21_values = {
2691 .version_string = SMB21_VERSION_STRING,
e4aa25e7
SF		 2692 .protocol_id = SMB21_PROT_ID,
2693 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
2694 .large_lock_type = 0,
2695 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2696 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2697 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2698 .header_size = sizeof(struct smb2_hdr),
2699 .max_header_size = MAX_SMB2_HDR_SIZE,
2700 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2701 .lock_cmd = SMB2_LOCK,
2702 .cap_unix = 0,
2703 .cap_nt_find = SMB2_NT_FIND,
2704 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 2705 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2706 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 2707 .create_lease_size = sizeof(struct create_lease),
e4aa25e7
SF		 2708};
2709
2710struct smb_version_values smb30_values = {
2711 .version_string = SMB30_VERSION_STRING,
2712 .protocol_id = SMB30_PROT_ID,
373512ec 2713 .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		 2714 .large_lock_type = 0,
2715 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2716 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2717 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
093b2bda
PS		 2718 .header_size = sizeof(struct smb2_hdr),
2719 .max_header_size = MAX_SMB2_HDR_SIZE,
09a4707e 2720 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2dc7e1c0 2721 .lock_cmd = SMB2_LOCK,
29e20f9c
PS		 2722 .cap_unix = 0,
2723 .cap_nt_find = SMB2_NT_FIND,
2724 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 2725 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2726 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 2727 .create_lease_size = sizeof(struct create_lease_v2),
1080ef75 2728};
20b6d8b4
SF		 2729
2730struct smb_version_values smb302_values = {
2731 .version_string = SMB302_VERSION_STRING,
2732 .protocol_id = SMB302_PROT_ID,
373512ec 2733 .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		 2734 .large_lock_type = 0,
2735 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2736 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2737 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2738 .header_size = sizeof(struct smb2_hdr),
2739 .max_header_size = MAX_SMB2_HDR_SIZE,
2740 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2741 .lock_cmd = SMB2_LOCK,
2742 .cap_unix = 0,
2743 .cap_nt_find = SMB2_NT_FIND,
2744 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 2745 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2746 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 2747 .create_lease_size = sizeof(struct create_lease_v2),
20b6d8b4 2748};
5f7fbf73
SF		 2749
2750#ifdef CONFIG_CIFS_SMB311
2751struct smb_version_values smb311_values = {
2752 .version_string = SMB311_VERSION_STRING,
2753 .protocol_id = SMB311_PROT_ID,
b618f001 2754 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES,
5f7fbf73
SF		 2755 .large_lock_type = 0,
2756 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2757 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2758 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2759 .header_size = sizeof(struct smb2_hdr),
2760 .max_header_size = MAX_SMB2_HDR_SIZE,
2761 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2762 .lock_cmd = SMB2_LOCK,
2763 .cap_unix = 0,
2764 .cap_nt_find = SMB2_NT_FIND,
2765 .cap_large_files = SMB2_LARGE_FILES,
2766 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2767 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
2768 .create_lease_size = sizeof(struct create_lease_v2),
2769};
2770#endif /* SMB311 */
Ubuntu Hirsute Linux kernel mirror