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Add missing definitions for CIFS File System Attributes
[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>
1080ef75 23#include "cifsglob.h"
2dc7e1c0
PS		 24#include "smb2pdu.h"
25#include "smb2proto.h"
28ea5290
PS		 26#include "cifsproto.h"
27#include "cifs_debug.h"
b42bf888 28#include "cifs_unicode.h"
2e44b288 29#include "smb2status.h"
6fc05c25 30#include "smb2glob.h"
28ea5290
PS		 31
32static int
33change_conf(struct TCP_Server_Info *server)
34{
35 server->credits += server->echo_credits + server->oplock_credits;
36 server->oplock_credits = server->echo_credits = 0;
37 switch (server->credits) {
38 case 0:
39 return -1;
40 case 1:
41 server->echoes = false;
42 server->oplocks = false;
f96637be 43 cifs_dbg(VFS, "disabling echoes and oplocks\n");
28ea5290
PS		 44 break;
45 case 2:
46 server->echoes = true;
47 server->oplocks = false;
48 server->echo_credits = 1;
f96637be 49 cifs_dbg(FYI, "disabling oplocks\n");
28ea5290
PS		 50 break;
51 default:
52 server->echoes = true;
53 server->oplocks = true;
54 server->echo_credits = 1;
55 server->oplock_credits = 1;
56 }
57 server->credits -= server->echo_credits + server->oplock_credits;
58 return 0;
59}
60
61static void
62smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
63 const int optype)
64{
65 int *val, rc = 0;
66 spin_lock(&server->req_lock);
67 val = server->ops->get_credits_field(server, optype);
68 *val += add;
69 server->in_flight--;
ec2e4523 70 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
28ea5290 71 rc = change_conf(server);
983c88a4
PS		 72 /*
73 * Sometimes server returns 0 credits on oplock break ack - we need to
74 * rebalance credits in this case.
75 */
76 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
77 server->oplocks) {
78 if (server->credits > 1) {
79 server->credits--;
80 server->oplock_credits++;
81 }
82 }
28ea5290
PS		 83 spin_unlock(&server->req_lock);
84 wake_up(&server->request_q);
85 if (rc)
86 cifs_reconnect(server);
87}
88
89static void
90smb2_set_credits(struct TCP_Server_Info *server, const int val)
91{
92 spin_lock(&server->req_lock);
93 server->credits = val;
94 spin_unlock(&server->req_lock);
95}
96
97static int *
98smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
99{
100 switch (optype) {
101 case CIFS_ECHO_OP:
102 return &server->echo_credits;
103 case CIFS_OBREAK_OP:
104 return &server->oplock_credits;
105 default:
106 return &server->credits;
107 }
108}
109
110static unsigned int
111smb2_get_credits(struct mid_q_entry *mid)
112{
113 return le16_to_cpu(((struct smb2_hdr *)mid->resp_buf)->CreditRequest);
114}
2dc7e1c0 115
cb7e9eab
PS		 116static int
117smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
118 unsigned int *num, unsigned int *credits)
119{
120 int rc = 0;
121 unsigned int scredits;
122
123 spin_lock(&server->req_lock);
124 while (1) {
125 if (server->credits <= 0) {
126 spin_unlock(&server->req_lock);
127 cifs_num_waiters_inc(server);
128 rc = wait_event_killable(server->request_q,
129 has_credits(server, &server->credits));
130 cifs_num_waiters_dec(server);
131 if (rc)
132 return rc;
133 spin_lock(&server->req_lock);
134 } else {
135 if (server->tcpStatus == CifsExiting) {
136 spin_unlock(&server->req_lock);
137 return -ENOENT;
138 }
139
140 scredits = server->credits;
141 /* can deadlock with reopen */
142 if (scredits == 1) {
143 *num = SMB2_MAX_BUFFER_SIZE;
144 *credits = 0;
145 break;
146 }
147
148 /* leave one credit for a possible reopen */
149 scredits--;
150 *num = min_t(unsigned int, size,
151 scredits * SMB2_MAX_BUFFER_SIZE);
152
153 *credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
154 server->credits -= *credits;
155 server->in_flight++;
156 break;
157 }
158 }
159 spin_unlock(&server->req_lock);
160 return rc;
161}
162
2dc7e1c0
PS		 163static __u64
164smb2_get_next_mid(struct TCP_Server_Info *server)
165{
166 __u64 mid;
167 /* for SMB2 we need the current value */
168 spin_lock(&GlobalMid_Lock);
169 mid = server->CurrentMid++;
170 spin_unlock(&GlobalMid_Lock);
171 return mid;
172}
1080ef75 173
093b2bda
PS		 174static struct mid_q_entry *
175smb2_find_mid(struct TCP_Server_Info *server, char *buf)
176{
177 struct mid_q_entry *mid;
178 struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
179
180 spin_lock(&GlobalMid_Lock);
181 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
182 if ((mid->mid == hdr->MessageId) &&
183 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
184 (mid->command == hdr->Command)) {
185 spin_unlock(&GlobalMid_Lock);
186 return mid;
187 }
188 }
189 spin_unlock(&GlobalMid_Lock);
190 return NULL;
191}
192
193static void
194smb2_dump_detail(void *buf)
195{
196#ifdef CONFIG_CIFS_DEBUG2
197 struct smb2_hdr *smb = (struct smb2_hdr *)buf;
198
f96637be
JP		 199 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
200 smb->Command, smb->Status, smb->Flags, smb->MessageId,
201 smb->ProcessId);
202 cifs_dbg(VFS, "smb buf %p len %u\n", smb, smb2_calc_size(smb));
093b2bda
PS		 203#endif
204}
205
ec2e4523
PS		 206static bool
207smb2_need_neg(struct TCP_Server_Info *server)
208{
209 return server->max_read == 0;
210}
211
212static int
213smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
214{
215 int rc;
216 ses->server->CurrentMid = 0;
217 rc = SMB2_negotiate(xid, ses);
218 /* BB we probably don't need to retry with modern servers */
219 if (rc == -EAGAIN)
220 rc = -EHOSTDOWN;
221 return rc;
222}
223
3a3bab50
PS		 224static unsigned int
225smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
226{
227 struct TCP_Server_Info *server = tcon->ses->server;
228 unsigned int wsize;
229
230 /* start with specified wsize, or default */
231 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
232 wsize = min_t(unsigned int, wsize, server->max_write);
cb7e9eab
PS		 233
234 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
235 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 236
3a3bab50
PS		 237 return wsize;
238}
239
240static unsigned int
241smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
242{
243 struct TCP_Server_Info *server = tcon->ses->server;
244 unsigned int rsize;
245
246 /* start with specified rsize, or default */
247 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
248 rsize = min_t(unsigned int, rsize, server->max_read);
bed9da02
PS		 249
250 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
251 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
3a3bab50 252
3a3bab50
PS		 253 return rsize;
254}
255
c481e9fe
SF		 256#ifdef CONFIG_CIFS_STATS2
257static int
258SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
259{
260 int rc;
261 unsigned int ret_data_len = 0;
262 struct network_interface_info_ioctl_rsp *out_buf;
263
264 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
265 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
266 NULL /* no data input */, 0 /* no data input */,
267 (char **)&out_buf, &ret_data_len);
268
269 if ((rc == 0) && (ret_data_len > 0)) {
270 /* Dump info on first interface */
271 cifs_dbg(FYI, "Adapter Capability 0x%x\t",
272 le32_to_cpu(out_buf->Capability));
273 cifs_dbg(FYI, "Link Speed %lld\n",
274 le64_to_cpu(out_buf->LinkSpeed));
275 } else
276 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
277
278 return rc;
279}
280#endif /* STATS2 */
281
af6a12ea
SF		 282static void
283smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
284{
285 int rc;
286 __le16 srch_path = 0; /* Null - open root of share */
287 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
288 struct cifs_open_parms oparms;
289 struct cifs_fid fid;
290
291 oparms.tcon = tcon;
292 oparms.desired_access = FILE_READ_ATTRIBUTES;
293 oparms.disposition = FILE_OPEN;
294 oparms.create_options = 0;
295 oparms.fid = &fid;
296 oparms.reconnect = false;
297
298 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
299 if (rc)
300 return;
301
c481e9fe
SF		 302#ifdef CONFIG_CIFS_STATS2
303 SMB3_request_interfaces(xid, tcon);
304#endif /* STATS2 */
305
af6a12ea
SF		 306 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
307 FS_ATTRIBUTE_INFORMATION);
308 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
309 FS_DEVICE_INFORMATION);
310 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
311 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
312 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
313 return;
314}
315
34f62640
SF		 316static void
317smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
318{
319 int rc;
320 __le16 srch_path = 0; /* Null - open root of share */
321 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
322 struct cifs_open_parms oparms;
323 struct cifs_fid fid;
324
325 oparms.tcon = tcon;
326 oparms.desired_access = FILE_READ_ATTRIBUTES;
327 oparms.disposition = FILE_OPEN;
328 oparms.create_options = 0;
329 oparms.fid = &fid;
330 oparms.reconnect = false;
331
332 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
333 if (rc)
334 return;
335
2167114c
SF		 336 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
337 FS_ATTRIBUTE_INFORMATION);
338 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
339 FS_DEVICE_INFORMATION);
34f62640
SF		 340 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
341 return;
342}
343
2503a0db
PS		 344static int
345smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
346 struct cifs_sb_info *cifs_sb, const char *full_path)
347{
348 int rc;
2503a0db 349 __le16 *utf16_path;
2e44b288 350 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 351 struct cifs_open_parms oparms;
352 struct cifs_fid fid;
2503a0db
PS		 353
354 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
355 if (!utf16_path)
356 return -ENOMEM;
357
064f6047
PS		 358 oparms.tcon = tcon;
359 oparms.desired_access = FILE_READ_ATTRIBUTES;
360 oparms.disposition = FILE_OPEN;
361 oparms.create_options = 0;
362 oparms.fid = &fid;
9cbc0b73 363 oparms.reconnect = false;
064f6047 364
b42bf888 365 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
2503a0db
PS		 366 if (rc) {
367 kfree(utf16_path);
368 return rc;
369 }
370
064f6047 371 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2503a0db
PS		 372 kfree(utf16_path);
373 return rc;
374}
375
be4cb9e3
PS		 376static int
377smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
378 struct cifs_sb_info *cifs_sb, const char *full_path,
379 u64 *uniqueid, FILE_ALL_INFO *data)
380{
381 *uniqueid = le64_to_cpu(data->IndexNumber);
382 return 0;
383}
384
b7546bc5
PS		 385static int
386smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
387 struct cifs_fid *fid, FILE_ALL_INFO *data)
388{
389 int rc;
390 struct smb2_file_all_info *smb2_data;
391
392 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
393 GFP_KERNEL);
394 if (smb2_data == NULL)
395 return -ENOMEM;
396
397 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
398 smb2_data);
399 if (!rc)
400 move_smb2_info_to_cifs(data, smb2_data);
401 kfree(smb2_data);
402 return rc;
403}
404
9094fad1
PS		 405static bool
406smb2_can_echo(struct TCP_Server_Info *server)
407{
408 return server->echoes;
409}
410
d60622eb
PS		 411static void
412smb2_clear_stats(struct cifs_tcon *tcon)
413{
414#ifdef CONFIG_CIFS_STATS
415 int i;
416 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
417 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
418 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
419 }
420#endif
421}
422
769ee6a4
SF		 423static void
424smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
425{
426 seq_puts(m, "\n\tShare Capabilities:");
427 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
428 seq_puts(m, " DFS,");
429 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
430 seq_puts(m, " CONTINUOUS AVAILABILITY,");
431 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
432 seq_puts(m, " SCALEOUT,");
433 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
434 seq_puts(m, " CLUSTER,");
435 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
436 seq_puts(m, " ASYMMETRIC,");
437 if (tcon->capabilities == 0)
438 seq_puts(m, " None");
af6a12ea
SF		 439 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
440 seq_puts(m, " Aligned,");
441 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
442 seq_puts(m, " Partition Aligned,");
443 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
444 seq_puts(m, " SSD,");
445 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
446 seq_puts(m, " TRIM-support,");
447
769ee6a4 448 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
af6a12ea
SF		 449 if (tcon->perf_sector_size)
450 seq_printf(m, "\tOptimal sector size: 0x%x",
451 tcon->perf_sector_size);
769ee6a4
SF		 452}
453
d60622eb
PS		 454static void
455smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
456{
457#ifdef CONFIG_CIFS_STATS
458 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
459 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
460 seq_printf(m, "\nNegotiates: %d sent %d failed",
461 atomic_read(&sent[SMB2_NEGOTIATE_HE]),
462 atomic_read(&failed[SMB2_NEGOTIATE_HE]));
463 seq_printf(m, "\nSessionSetups: %d sent %d failed",
464 atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
465 atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
d60622eb
PS		 466 seq_printf(m, "\nLogoffs: %d sent %d failed",
467 atomic_read(&sent[SMB2_LOGOFF_HE]),
468 atomic_read(&failed[SMB2_LOGOFF_HE]));
469 seq_printf(m, "\nTreeConnects: %d sent %d failed",
470 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
471 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
472 seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
473 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
474 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
475 seq_printf(m, "\nCreates: %d sent %d failed",
476 atomic_read(&sent[SMB2_CREATE_HE]),
477 atomic_read(&failed[SMB2_CREATE_HE]));
478 seq_printf(m, "\nCloses: %d sent %d failed",
479 atomic_read(&sent[SMB2_CLOSE_HE]),
480 atomic_read(&failed[SMB2_CLOSE_HE]));
481 seq_printf(m, "\nFlushes: %d sent %d failed",
482 atomic_read(&sent[SMB2_FLUSH_HE]),
483 atomic_read(&failed[SMB2_FLUSH_HE]));
484 seq_printf(m, "\nReads: %d sent %d failed",
485 atomic_read(&sent[SMB2_READ_HE]),
486 atomic_read(&failed[SMB2_READ_HE]));
487 seq_printf(m, "\nWrites: %d sent %d failed",
488 atomic_read(&sent[SMB2_WRITE_HE]),
489 atomic_read(&failed[SMB2_WRITE_HE]));
490 seq_printf(m, "\nLocks: %d sent %d failed",
491 atomic_read(&sent[SMB2_LOCK_HE]),
492 atomic_read(&failed[SMB2_LOCK_HE]));
493 seq_printf(m, "\nIOCTLs: %d sent %d failed",
494 atomic_read(&sent[SMB2_IOCTL_HE]),
495 atomic_read(&failed[SMB2_IOCTL_HE]));
496 seq_printf(m, "\nCancels: %d sent %d failed",
497 atomic_read(&sent[SMB2_CANCEL_HE]),
498 atomic_read(&failed[SMB2_CANCEL_HE]));
499 seq_printf(m, "\nEchos: %d sent %d failed",
500 atomic_read(&sent[SMB2_ECHO_HE]),
501 atomic_read(&failed[SMB2_ECHO_HE]));
502 seq_printf(m, "\nQueryDirectories: %d sent %d failed",
503 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
504 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
505 seq_printf(m, "\nChangeNotifies: %d sent %d failed",
506 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
507 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
508 seq_printf(m, "\nQueryInfos: %d sent %d failed",
509 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
510 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
511 seq_printf(m, "\nSetInfos: %d sent %d failed",
512 atomic_read(&sent[SMB2_SET_INFO_HE]),
513 atomic_read(&failed[SMB2_SET_INFO_HE]));
514 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
515 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
516 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
517#endif
518}
519
f0df737e
PS		 520static void
521smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
522{
2e44b288 523 struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
53ef1016
PS		 524 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
525
f0df737e
PS		 526 cfile->fid.persistent_fid = fid->persistent_fid;
527 cfile->fid.volatile_fid = fid->volatile_fid;
42873b0a
PS		 528 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
529 &fid->purge_cache);
18cceb6a 530 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
f0df737e
PS		 531}
532
760ad0ca 533static void
f0df737e
PS		 534smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
535 struct cifs_fid *fid)
536{
760ad0ca 537 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
f0df737e
PS		 538}
539
41c1358e
SF		 540static int
541SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
542 u64 persistent_fid, u64 volatile_fid,
543 struct copychunk_ioctl *pcchunk)
544{
545 int rc;
546 unsigned int ret_data_len;
547 struct resume_key_req *res_key;
548
549 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
550 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
551 NULL, 0 /* no input */,
552 (char **)&res_key, &ret_data_len);
553
554 if (rc) {
555 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
556 goto req_res_key_exit;
557 }
558 if (ret_data_len < sizeof(struct resume_key_req)) {
559 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
560 rc = -EINVAL;
561 goto req_res_key_exit;
562 }
563 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
564
565req_res_key_exit:
566 kfree(res_key);
567 return rc;
568}
569
570static int
571smb2_clone_range(const unsigned int xid,
572 struct cifsFileInfo *srcfile,
573 struct cifsFileInfo *trgtfile, u64 src_off,
574 u64 len, u64 dest_off)
575{
576 int rc;
577 unsigned int ret_data_len;
578 struct copychunk_ioctl *pcchunk;
9bf0c9cd
SF		 579 struct copychunk_ioctl_rsp *retbuf = NULL;
580 struct cifs_tcon *tcon;
581 int chunks_copied = 0;
582 bool chunk_sizes_updated = false;
41c1358e
SF		 583
584 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
585
586 if (pcchunk == NULL)
587 return -ENOMEM;
588
589 cifs_dbg(FYI, "in smb2_clone_range - about to call request res key\n");
590 /* Request a key from the server to identify the source of the copy */
591 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
592 srcfile->fid.persistent_fid,
593 srcfile->fid.volatile_fid, pcchunk);
594
595 /* Note: request_res_key sets res_key null only if rc !=0 */
596 if (rc)
9bf0c9cd 597 goto cchunk_out;
41c1358e
SF		 598
599 /* For now array only one chunk long, will make more flexible later */
600 pcchunk->ChunkCount = __constant_cpu_to_le32(1);
601 pcchunk->Reserved = 0;
41c1358e
SF		 602 pcchunk->Reserved2 = 0;
603
9bf0c9cd 604 tcon = tlink_tcon(trgtfile->tlink);
41c1358e 605
9bf0c9cd
SF		 606 while (len > 0) {
607 pcchunk->SourceOffset = cpu_to_le64(src_off);
608 pcchunk->TargetOffset = cpu_to_le64(dest_off);
609 pcchunk->Length =
610 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
41c1358e 611
9bf0c9cd
SF		 612 /* Request server copy to target from src identified by key */
613 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
614 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
615 true /* is_fsctl */, (char *)pcchunk,
616 sizeof(struct copychunk_ioctl), (char **)&retbuf,
617 &ret_data_len);
618 if (rc == 0) {
619 if (ret_data_len !=
620 sizeof(struct copychunk_ioctl_rsp)) {
621 cifs_dbg(VFS, "invalid cchunk response size\n");
622 rc = -EIO;
623 goto cchunk_out;
624 }
625 if (retbuf->TotalBytesWritten == 0) {
626 cifs_dbg(FYI, "no bytes copied\n");
627 rc = -EIO;
628 goto cchunk_out;
629 }
630 /*
631 * Check if server claimed to write more than we asked
632 */
633 if (le32_to_cpu(retbuf->TotalBytesWritten) >
634 le32_to_cpu(pcchunk->Length)) {
635 cifs_dbg(VFS, "invalid copy chunk response\n");
636 rc = -EIO;
637 goto cchunk_out;
638 }
639 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
640 cifs_dbg(VFS, "invalid num chunks written\n");
641 rc = -EIO;
642 goto cchunk_out;
643 }
644 chunks_copied++;
645
646 src_off += le32_to_cpu(retbuf->TotalBytesWritten);
647 dest_off += le32_to_cpu(retbuf->TotalBytesWritten);
648 len -= le32_to_cpu(retbuf->TotalBytesWritten);
649
650 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %d\n",
651 le32_to_cpu(retbuf->ChunksWritten),
652 le32_to_cpu(retbuf->ChunkBytesWritten),
653 le32_to_cpu(retbuf->TotalBytesWritten));
654 } else if (rc == -EINVAL) {
655 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
656 goto cchunk_out;
657
658 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
659 le32_to_cpu(retbuf->ChunksWritten),
660 le32_to_cpu(retbuf->ChunkBytesWritten),
661 le32_to_cpu(retbuf->TotalBytesWritten));
662
663 /*
664 * Check if this is the first request using these sizes,
665 * (ie check if copy succeed once with original sizes
666 * and check if the server gave us different sizes after
667 * we already updated max sizes on previous request).
668 * if not then why is the server returning an error now
669 */
670 if ((chunks_copied != 0) || chunk_sizes_updated)
671 goto cchunk_out;
672
673 /* Check that server is not asking us to grow size */
674 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
675 tcon->max_bytes_chunk)
676 tcon->max_bytes_chunk =
677 le32_to_cpu(retbuf->ChunkBytesWritten);
678 else
679 goto cchunk_out; /* server gave us bogus size */
680
681 /* No need to change MaxChunks since already set to 1 */
682 chunk_sizes_updated = true;
683 }
684 }
41c1358e 685
9bf0c9cd 686cchunk_out:
41c1358e
SF		 687 kfree(pcchunk);
688 return rc;
689}
690
7a5cfb19
PS		 691static int
692smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
693 struct cifs_fid *fid)
694{
695 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
696}
697
09a4707e
PS		 698static unsigned int
699smb2_read_data_offset(char *buf)
700{
701 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
702 return rsp->DataOffset;
703}
704
705static unsigned int
706smb2_read_data_length(char *buf)
707{
708 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
709 return le32_to_cpu(rsp->DataLength);
710}
711
d8e05039
PS		 712
713static int
714smb2_sync_read(const unsigned int xid, struct cifsFileInfo *cfile,
715 struct cifs_io_parms *parms, unsigned int *bytes_read,
716 char **buf, int *buf_type)
717{
718 parms->persistent_fid = cfile->fid.persistent_fid;
719 parms->volatile_fid = cfile->fid.volatile_fid;
720 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
721}
722
009d3443
PS		 723static int
724smb2_sync_write(const unsigned int xid, struct cifsFileInfo *cfile,
725 struct cifs_io_parms *parms, unsigned int *written,
726 struct kvec *iov, unsigned long nr_segs)
727{
728
729 parms->persistent_fid = cfile->fid.persistent_fid;
730 parms->volatile_fid = cfile->fid.volatile_fid;
731 return SMB2_write(xid, parms, written, iov, nr_segs);
732}
733
c839ff24
PS		 734static int
735smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
736 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
737{
738 __le64 eof = cpu_to_le64(size);
739 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
f29ebb47 740 cfile->fid.volatile_fid, cfile->pid, &eof, false);
c839ff24
PS		 741}
742
64a5cfa6
SF		 743static int
744smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
745 struct cifsFileInfo *cfile)
746{
747 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
748 cfile->fid.volatile_fid);
749}
750
d324f08d
PS		 751static int
752smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
753 const char *path, struct cifs_sb_info *cifs_sb,
754 struct cifs_fid *fid, __u16 search_flags,
755 struct cifs_search_info *srch_inf)
756{
757 __le16 *utf16_path;
758 int rc;
2e44b288 759 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047 760 struct cifs_open_parms oparms;
d324f08d
PS		 761
762 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
763 if (!utf16_path)
764 return -ENOMEM;
765
064f6047
PS		 766 oparms.tcon = tcon;
767 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
768 oparms.disposition = FILE_OPEN;
769 oparms.create_options = 0;
770 oparms.fid = fid;
9cbc0b73 771 oparms.reconnect = false;
064f6047 772
b42bf888 773 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
d324f08d
PS		 774 kfree(utf16_path);
775 if (rc) {
f96637be 776 cifs_dbg(VFS, "open dir failed\n");
d324f08d
PS		 777 return rc;
778 }
779
780 srch_inf->entries_in_buffer = 0;
781 srch_inf->index_of_last_entry = 0;
d324f08d 782
064f6047
PS		 783 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
784 fid->volatile_fid, 0, srch_inf);
d324f08d 785 if (rc) {
f96637be 786 cifs_dbg(VFS, "query directory failed\n");
064f6047 787 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
d324f08d
PS		 788 }
789 return rc;
790}
791
792static int
793smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
794 struct cifs_fid *fid, __u16 search_flags,
795 struct cifs_search_info *srch_inf)
796{
797 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
798 fid->volatile_fid, 0, srch_inf);
799}
800
801static int
802smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
803 struct cifs_fid *fid)
804{
805 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
806}
807
2e44b288
PS		 808/*
809* If we negotiate SMB2 protocol and get STATUS_PENDING - update
810* the number of credits and return true. Otherwise - return false.
811*/
812static bool
813smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
814{
815 struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
816
12e8a208 817 if (hdr->Status != STATUS_PENDING)
2e44b288
PS		 818 return false;
819
820 if (!length) {
821 spin_lock(&server->req_lock);
822 server->credits += le16_to_cpu(hdr->CreditRequest);
823 spin_unlock(&server->req_lock);
824 wake_up(&server->request_q);
825 }
826
827 return true;
828}
829
983c88a4
PS		 830static int
831smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
832 struct cifsInodeInfo *cinode)
833{
0822f514
PS		 834 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
835 return SMB2_lease_break(0, tcon, cinode->lease_key,
836 smb2_get_lease_state(cinode));
837
983c88a4
PS		 838 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
839 fid->volatile_fid,
18cceb6a 840 CIFS_CACHE_READ(cinode) ? 1 : 0);
983c88a4
PS		 841}
842
6fc05c25
PS		 843static int
844smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
845 struct kstatfs *buf)
846{
847 int rc;
6fc05c25
PS		 848 __le16 srch_path = 0; /* Null - open root of share */
849 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 850 struct cifs_open_parms oparms;
851 struct cifs_fid fid;
852
853 oparms.tcon = tcon;
854 oparms.desired_access = FILE_READ_ATTRIBUTES;
855 oparms.disposition = FILE_OPEN;
856 oparms.create_options = 0;
857 oparms.fid = &fid;
9cbc0b73 858 oparms.reconnect = false;
6fc05c25 859
b42bf888 860 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
6fc05c25
PS		 861 if (rc)
862 return rc;
863 buf->f_type = SMB2_MAGIC_NUMBER;
064f6047
PS		 864 rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
865 buf);
866 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
6fc05c25
PS		 867 return rc;
868}
869
027e8eec
PS		 870static bool
871smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
872{
873 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
874 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
875}
876
f7ba7fe6
PS		 877static int
878smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
879 __u64 length, __u32 type, int lock, int unlock, bool wait)
880{
881 if (unlock && !lock)
882 type = SMB2_LOCKFLAG_UNLOCK;
883 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
884 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
885 current->tgid, length, offset, type, wait);
886}
887
b8c32dbb
PS		 888static void
889smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
890{
891 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
892}
893
894static void
895smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
896{
897 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
898}
899
900static void
901smb2_new_lease_key(struct cifs_fid *fid)
902{
903 get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE);
904}
905
b42bf888
PS		 906static int
907smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
908 const char *full_path, char **target_path,
909 struct cifs_sb_info *cifs_sb)
910{
911 int rc;
912 __le16 *utf16_path;
913 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
914 struct cifs_open_parms oparms;
915 struct cifs_fid fid;
916 struct smb2_err_rsp *err_buf = NULL;
917 struct smb2_symlink_err_rsp *symlink;
918 unsigned int sub_len, sub_offset;
919
920 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
921
922 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
923 if (!utf16_path)
924 return -ENOMEM;
925
926 oparms.tcon = tcon;
927 oparms.desired_access = FILE_READ_ATTRIBUTES;
928 oparms.disposition = FILE_OPEN;
929 oparms.create_options = 0;
930 oparms.fid = &fid;
931 oparms.reconnect = false;
932
933 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf);
934
935 if (!rc || !err_buf) {
936 kfree(utf16_path);
937 return -ENOENT;
938 }
939 /* open must fail on symlink - reset rc */
940 rc = 0;
941 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
942 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
943 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
944 *target_path = cifs_strndup_from_utf16(
945 (char *)symlink->PathBuffer + sub_offset,
946 sub_len, true, cifs_sb->local_nls);
947 if (!(*target_path)) {
948 kfree(utf16_path);
949 return -ENOMEM;
950 }
951 convert_delimiter(*target_path, '/');
952 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
953 kfree(utf16_path);
954 return rc;
955}
956
c11f1df5
SP		 957static void
958smb2_downgrade_oplock(struct TCP_Server_Info *server,
959 struct cifsInodeInfo *cinode, bool set_level2)
960{
961 if (set_level2)
962 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
963 0, NULL);
964 else
965 server->ops->set_oplock_level(cinode, 0, 0, NULL);
966}
967
53ef1016 968static void
42873b0a
PS		 969smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
970 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 971{
972 oplock &= 0xFF;
973 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
974 return;
975 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
42873b0a 976 cinode->oplock = CIFS_CACHE_RHW_FLG;
53ef1016
PS		 977 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
978 &cinode->vfs_inode);
979 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
42873b0a 980 cinode->oplock = CIFS_CACHE_RW_FLG;
53ef1016
PS		 981 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
982 &cinode->vfs_inode);
983 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
984 cinode->oplock = CIFS_CACHE_READ_FLG;
985 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
986 &cinode->vfs_inode);
987 } else
988 cinode->oplock = 0;
989}
990
991static void
42873b0a
PS		 992smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
993 unsigned int epoch, bool *purge_cache)
53ef1016
PS		 994{
995 char message[5] = {0};
996
997 oplock &= 0xFF;
998 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
999 return;
1000
1001 cinode->oplock = 0;
1002 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
1003 cinode->oplock |= CIFS_CACHE_READ_FLG;
1004 strcat(message, "R");
1005 }
1006 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
1007 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
1008 strcat(message, "H");
1009 }
1010 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
1011 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
1012 strcat(message, "W");
1013 }
1014 if (!cinode->oplock)
1015 strcat(message, "None");
1016 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
1017 &cinode->vfs_inode);
1018}
1019
42873b0a
PS		 1020static void
1021smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1022 unsigned int epoch, bool *purge_cache)
1023{
1024 unsigned int old_oplock = cinode->oplock;
1025
1026 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
1027
1028 if (purge_cache) {
1029 *purge_cache = false;
1030 if (old_oplock == CIFS_CACHE_READ_FLG) {
1031 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
1032 (epoch - cinode->epoch > 0))
1033 *purge_cache = true;
1034 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1035 (epoch - cinode->epoch > 1))
1036 *purge_cache = true;
1037 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1038 (epoch - cinode->epoch > 1))
1039 *purge_cache = true;
1040 else if (cinode->oplock == 0 &&
1041 (epoch - cinode->epoch > 0))
1042 *purge_cache = true;
1043 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
1044 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1045 (epoch - cinode->epoch > 0))
1046 *purge_cache = true;
1047 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1048 (epoch - cinode->epoch > 1))
1049 *purge_cache = true;
1050 }
1051 cinode->epoch = epoch;
1052 }
1053}
1054
53ef1016
PS		 1055static bool
1056smb2_is_read_op(__u32 oplock)
1057{
1058 return oplock == SMB2_OPLOCK_LEVEL_II;
1059}
1060
1061static bool
1062smb21_is_read_op(__u32 oplock)
1063{
1064 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
1065 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
1066}
1067
f047390a
PS		 1068static __le32
1069map_oplock_to_lease(u8 oplock)
1070{
1071 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
1072 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
1073 else if (oplock == SMB2_OPLOCK_LEVEL_II)
1074 return SMB2_LEASE_READ_CACHING;
1075 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
1076 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
1077 SMB2_LEASE_WRITE_CACHING;
1078 return 0;
1079}
1080
a41a28bd
PS		 1081static char *
1082smb2_create_lease_buf(u8 *lease_key, u8 oplock)
1083{
1084 struct create_lease *buf;
1085
1086 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
1087 if (!buf)
1088 return NULL;
1089
1090 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1091 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
f047390a 1092 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
a41a28bd
PS		 1093
1094 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1095 (struct create_lease, lcontext));
1096 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
1097 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1098 (struct create_lease, Name));
1099 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 1100 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
a41a28bd
PS		 1101 buf->Name[0] = 'R';
1102 buf->Name[1] = 'q';
1103 buf->Name[2] = 'L';
1104 buf->Name[3] = 's';
1105 return (char *)buf;
1106}
1107
f047390a
PS		 1108static char *
1109smb3_create_lease_buf(u8 *lease_key, u8 oplock)
1110{
1111 struct create_lease_v2 *buf;
1112
1113 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
1114 if (!buf)
1115 return NULL;
1116
1117 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1118 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
1119 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
1120
1121 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1122 (struct create_lease_v2, lcontext));
1123 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
1124 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1125 (struct create_lease_v2, Name));
1126 buf->ccontext.NameLength = cpu_to_le16(4);
12197a7f 1127 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
f047390a
PS		 1128 buf->Name[0] = 'R';
1129 buf->Name[1] = 'q';
1130 buf->Name[2] = 'L';
1131 buf->Name[3] = 's';
1132 return (char *)buf;
1133}
1134
b5c7cde3 1135static __u8
42873b0a 1136smb2_parse_lease_buf(void *buf, unsigned int *epoch)
b5c7cde3
PS		 1137{
1138 struct create_lease *lc = (struct create_lease *)buf;
1139
42873b0a 1140 *epoch = 0; /* not used */
b5c7cde3
PS		 1141 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1142 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1143 return le32_to_cpu(lc->lcontext.LeaseState);
1144}
1145
f047390a 1146static __u8
42873b0a 1147smb3_parse_lease_buf(void *buf, unsigned int *epoch)
f047390a
PS		 1148{
1149 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
1150
42873b0a 1151 *epoch = le16_to_cpu(lc->lcontext.Epoch);
f047390a
PS		 1152 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1153 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1154 return le32_to_cpu(lc->lcontext.LeaseState);
1155}
1156
7f6c5008
PS		 1157static unsigned int
1158smb2_wp_retry_size(struct inode *inode)
1159{
1160 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
1161 SMB2_MAX_BUFFER_SIZE);
1162}
1163
53ef1016 1164struct smb_version_operations smb20_operations = {
027e8eec 1165 .compare_fids = smb2_compare_fids,
2dc7e1c0 1166 .setup_request = smb2_setup_request,
c95b8eed 1167 .setup_async_request = smb2_setup_async_request,
2dc7e1c0 1168 .check_receive = smb2_check_receive,
28ea5290
PS		 1169 .add_credits = smb2_add_credits,
1170 .set_credits = smb2_set_credits,
1171 .get_credits_field = smb2_get_credits_field,
1172 .get_credits = smb2_get_credits,
cb7e9eab 1173 .wait_mtu_credits = cifs_wait_mtu_credits,
2dc7e1c0 1174 .get_next_mid = smb2_get_next_mid,
09a4707e
PS		 1175 .read_data_offset = smb2_read_data_offset,
1176 .read_data_length = smb2_read_data_length,
1177 .map_error = map_smb2_to_linux_error,
093b2bda
PS		 1178 .find_mid = smb2_find_mid,
1179 .check_message = smb2_check_message,
1180 .dump_detail = smb2_dump_detail,
d60622eb
PS		 1181 .clear_stats = smb2_clear_stats,
1182 .print_stats = smb2_print_stats,
983c88a4 1183 .is_oplock_break = smb2_is_valid_oplock_break,
c11f1df5 1184 .downgrade_oplock = smb2_downgrade_oplock,
ec2e4523
PS		 1185 .need_neg = smb2_need_neg,
1186 .negotiate = smb2_negotiate,
3a3bab50
PS		 1187 .negotiate_wsize = smb2_negotiate_wsize,
1188 .negotiate_rsize = smb2_negotiate_rsize,
5478f9ba
PS		 1189 .sess_setup = SMB2_sess_setup,
1190 .logoff = SMB2_logoff,
faaf946a
PS		 1191 .tree_connect = SMB2_tcon,
1192 .tree_disconnect = SMB2_tdis,
34f62640 1193 .qfs_tcon = smb2_qfs_tcon,
2503a0db 1194 .is_path_accessible = smb2_is_path_accessible,
9094fad1
PS		 1195 .can_echo = smb2_can_echo,
1196 .echo = SMB2_echo,
be4cb9e3
PS		 1197 .query_path_info = smb2_query_path_info,
1198 .get_srv_inum = smb2_get_srv_inum,
b7546bc5 1199 .query_file_info = smb2_query_file_info,
c839ff24
PS		 1200 .set_path_size = smb2_set_path_size,
1201 .set_file_size = smb2_set_file_size,
1feeaac7 1202 .set_file_info = smb2_set_file_info,
64a5cfa6 1203 .set_compression = smb2_set_compression,
a0e73183
PS		 1204 .mkdir = smb2_mkdir,
1205 .mkdir_setinfo = smb2_mkdir_setinfo,
1a500f01 1206 .rmdir = smb2_rmdir,
cbe6f439 1207 .unlink = smb2_unlink,
35143eb5 1208 .rename = smb2_rename_path,
568798cc 1209 .create_hardlink = smb2_create_hardlink,
b42bf888 1210 .query_symlink = smb2_query_symlink,
f0df737e
PS		 1211 .open = smb2_open_file,
1212 .set_fid = smb2_set_fid,
1213 .close = smb2_close_file,
7a5cfb19 1214 .flush = smb2_flush_file,
09a4707e 1215 .async_readv = smb2_async_readv,
33319141 1216 .async_writev = smb2_async_writev,
d8e05039 1217 .sync_read = smb2_sync_read,
009d3443 1218 .sync_write = smb2_sync_write,
d324f08d
PS		 1219 .query_dir_first = smb2_query_dir_first,
1220 .query_dir_next = smb2_query_dir_next,
1221 .close_dir = smb2_close_dir,
1222 .calc_smb_size = smb2_calc_size,
2e44b288 1223 .is_status_pending = smb2_is_status_pending,
983c88a4 1224 .oplock_response = smb2_oplock_response,
6fc05c25 1225 .queryfs = smb2_queryfs,
f7ba7fe6
PS		 1226 .mand_lock = smb2_mand_lock,
1227 .mand_unlock_range = smb2_unlock_range,
b140799a 1228 .push_mand_locks = smb2_push_mandatory_locks,
b8c32dbb
PS		 1229 .get_lease_key = smb2_get_lease_key,
1230 .set_lease_key = smb2_set_lease_key,
1231 .new_lease_key = smb2_new_lease_key,
38107d45 1232 .calc_signature = smb2_calc_signature,
53ef1016
PS		 1233 .is_read_op = smb2_is_read_op,
1234 .set_oplock_level = smb2_set_oplock_level,
a41a28bd 1235 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 1236 .parse_lease_buf = smb2_parse_lease_buf,
41c1358e 1237 .clone_range = smb2_clone_range,
7f6c5008 1238 .wp_retry_size = smb2_wp_retry_size,
38107d45
SF		 1239};
1240
53ef1016
PS		 1241struct smb_version_operations smb21_operations = {
1242 .compare_fids = smb2_compare_fids,
1243 .setup_request = smb2_setup_request,
1244 .setup_async_request = smb2_setup_async_request,
1245 .check_receive = smb2_check_receive,
1246 .add_credits = smb2_add_credits,
1247 .set_credits = smb2_set_credits,
1248 .get_credits_field = smb2_get_credits_field,
1249 .get_credits = smb2_get_credits,
cb7e9eab 1250 .wait_mtu_credits = smb2_wait_mtu_credits,
53ef1016
PS		 1251 .get_next_mid = smb2_get_next_mid,
1252 .read_data_offset = smb2_read_data_offset,
1253 .read_data_length = smb2_read_data_length,
1254 .map_error = map_smb2_to_linux_error,
1255 .find_mid = smb2_find_mid,
1256 .check_message = smb2_check_message,
1257 .dump_detail = smb2_dump_detail,
1258 .clear_stats = smb2_clear_stats,
1259 .print_stats = smb2_print_stats,
1260 .is_oplock_break = smb2_is_valid_oplock_break,
c11f1df5 1261 .downgrade_oplock = smb2_downgrade_oplock,
53ef1016
PS		 1262 .need_neg = smb2_need_neg,
1263 .negotiate = smb2_negotiate,
1264 .negotiate_wsize = smb2_negotiate_wsize,
1265 .negotiate_rsize = smb2_negotiate_rsize,
1266 .sess_setup = SMB2_sess_setup,
1267 .logoff = SMB2_logoff,
1268 .tree_connect = SMB2_tcon,
1269 .tree_disconnect = SMB2_tdis,
34f62640 1270 .qfs_tcon = smb2_qfs_tcon,
53ef1016
PS		 1271 .is_path_accessible = smb2_is_path_accessible,
1272 .can_echo = smb2_can_echo,
1273 .echo = SMB2_echo,
1274 .query_path_info = smb2_query_path_info,
1275 .get_srv_inum = smb2_get_srv_inum,
1276 .query_file_info = smb2_query_file_info,
1277 .set_path_size = smb2_set_path_size,
1278 .set_file_size = smb2_set_file_size,
1279 .set_file_info = smb2_set_file_info,
64a5cfa6 1280 .set_compression = smb2_set_compression,
53ef1016
PS		 1281 .mkdir = smb2_mkdir,
1282 .mkdir_setinfo = smb2_mkdir_setinfo,
1283 .rmdir = smb2_rmdir,
1284 .unlink = smb2_unlink,
1285 .rename = smb2_rename_path,
1286 .create_hardlink = smb2_create_hardlink,
1287 .query_symlink = smb2_query_symlink,
1288 .open = smb2_open_file,
1289 .set_fid = smb2_set_fid,
1290 .close = smb2_close_file,
1291 .flush = smb2_flush_file,
1292 .async_readv = smb2_async_readv,
1293 .async_writev = smb2_async_writev,
1294 .sync_read = smb2_sync_read,
1295 .sync_write = smb2_sync_write,
1296 .query_dir_first = smb2_query_dir_first,
1297 .query_dir_next = smb2_query_dir_next,
1298 .close_dir = smb2_close_dir,
1299 .calc_smb_size = smb2_calc_size,
1300 .is_status_pending = smb2_is_status_pending,
1301 .oplock_response = smb2_oplock_response,
1302 .queryfs = smb2_queryfs,
1303 .mand_lock = smb2_mand_lock,
1304 .mand_unlock_range = smb2_unlock_range,
1305 .push_mand_locks = smb2_push_mandatory_locks,
1306 .get_lease_key = smb2_get_lease_key,
1307 .set_lease_key = smb2_set_lease_key,
1308 .new_lease_key = smb2_new_lease_key,
1309 .calc_signature = smb2_calc_signature,
1310 .is_read_op = smb21_is_read_op,
1311 .set_oplock_level = smb21_set_oplock_level,
a41a28bd 1312 .create_lease_buf = smb2_create_lease_buf,
b5c7cde3 1313 .parse_lease_buf = smb2_parse_lease_buf,
41c1358e 1314 .clone_range = smb2_clone_range,
7f6c5008 1315 .wp_retry_size = smb2_wp_retry_size,
53ef1016 1316};
38107d45
SF		 1317
1318struct smb_version_operations smb30_operations = {
1319 .compare_fids = smb2_compare_fids,
1320 .setup_request = smb2_setup_request,
1321 .setup_async_request = smb2_setup_async_request,
1322 .check_receive = smb2_check_receive,
1323 .add_credits = smb2_add_credits,
1324 .set_credits = smb2_set_credits,
1325 .get_credits_field = smb2_get_credits_field,
1326 .get_credits = smb2_get_credits,
cb7e9eab 1327 .wait_mtu_credits = smb2_wait_mtu_credits,
38107d45
SF		 1328 .get_next_mid = smb2_get_next_mid,
1329 .read_data_offset = smb2_read_data_offset,
1330 .read_data_length = smb2_read_data_length,
1331 .map_error = map_smb2_to_linux_error,
1332 .find_mid = smb2_find_mid,
1333 .check_message = smb2_check_message,
1334 .dump_detail = smb2_dump_detail,
1335 .clear_stats = smb2_clear_stats,
1336 .print_stats = smb2_print_stats,
769ee6a4 1337 .dump_share_caps = smb2_dump_share_caps,
38107d45 1338 .is_oplock_break = smb2_is_valid_oplock_break,
c11f1df5 1339 .downgrade_oplock = smb2_downgrade_oplock,
38107d45
SF		 1340 .need_neg = smb2_need_neg,
1341 .negotiate = smb2_negotiate,
1342 .negotiate_wsize = smb2_negotiate_wsize,
1343 .negotiate_rsize = smb2_negotiate_rsize,
1344 .sess_setup = SMB2_sess_setup,
1345 .logoff = SMB2_logoff,
1346 .tree_connect = SMB2_tcon,
1347 .tree_disconnect = SMB2_tdis,
af6a12ea 1348 .qfs_tcon = smb3_qfs_tcon,
38107d45
SF		 1349 .is_path_accessible = smb2_is_path_accessible,
1350 .can_echo = smb2_can_echo,
1351 .echo = SMB2_echo,
1352 .query_path_info = smb2_query_path_info,
1353 .get_srv_inum = smb2_get_srv_inum,
1354 .query_file_info = smb2_query_file_info,
1355 .set_path_size = smb2_set_path_size,
1356 .set_file_size = smb2_set_file_size,
1357 .set_file_info = smb2_set_file_info,
64a5cfa6 1358 .set_compression = smb2_set_compression,
38107d45
SF		 1359 .mkdir = smb2_mkdir,
1360 .mkdir_setinfo = smb2_mkdir_setinfo,
1361 .rmdir = smb2_rmdir,
1362 .unlink = smb2_unlink,
1363 .rename = smb2_rename_path,
1364 .create_hardlink = smb2_create_hardlink,
b42bf888 1365 .query_symlink = smb2_query_symlink,
38107d45
SF		 1366 .open = smb2_open_file,
1367 .set_fid = smb2_set_fid,
1368 .close = smb2_close_file,
1369 .flush = smb2_flush_file,
1370 .async_readv = smb2_async_readv,
1371 .async_writev = smb2_async_writev,
1372 .sync_read = smb2_sync_read,
1373 .sync_write = smb2_sync_write,
1374 .query_dir_first = smb2_query_dir_first,
1375 .query_dir_next = smb2_query_dir_next,
1376 .close_dir = smb2_close_dir,
1377 .calc_smb_size = smb2_calc_size,
1378 .is_status_pending = smb2_is_status_pending,
1379 .oplock_response = smb2_oplock_response,
1380 .queryfs = smb2_queryfs,
1381 .mand_lock = smb2_mand_lock,
1382 .mand_unlock_range = smb2_unlock_range,
1383 .push_mand_locks = smb2_push_mandatory_locks,
1384 .get_lease_key = smb2_get_lease_key,
1385 .set_lease_key = smb2_set_lease_key,
1386 .new_lease_key = smb2_new_lease_key,
e65a5cb4 1387 .generate_signingkey = generate_smb3signingkey,
38107d45 1388 .calc_signature = smb3_calc_signature,
53ef1016 1389 .is_read_op = smb21_is_read_op,
42873b0a 1390 .set_oplock_level = smb3_set_oplock_level,
f047390a
PS		 1391 .create_lease_buf = smb3_create_lease_buf,
1392 .parse_lease_buf = smb3_parse_lease_buf,
41c1358e 1393 .clone_range = smb2_clone_range,
ff1c038a 1394 .validate_negotiate = smb3_validate_negotiate,
7f6c5008 1395 .wp_retry_size = smb2_wp_retry_size,
1080ef75
SF		 1396};
1397
dd446b16
SF		 1398struct smb_version_values smb20_values = {
1399 .version_string = SMB20_VERSION_STRING,
1400 .protocol_id = SMB20_PROT_ID,
1401 .req_capabilities = 0, /* MBZ */
1402 .large_lock_type = 0,
1403 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1404 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1405 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1406 .header_size = sizeof(struct smb2_hdr),
1407 .max_header_size = MAX_SMB2_HDR_SIZE,
1408 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1409 .lock_cmd = SMB2_LOCK,
1410 .cap_unix = 0,
1411 .cap_nt_find = SMB2_NT_FIND,
1412 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 1413 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1414 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 1415 .create_lease_size = sizeof(struct create_lease),
dd446b16
SF		 1416};
1417
1080ef75
SF		 1418struct smb_version_values smb21_values = {
1419 .version_string = SMB21_VERSION_STRING,
e4aa25e7
SF		 1420 .protocol_id = SMB21_PROT_ID,
1421 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
1422 .large_lock_type = 0,
1423 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1424 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1425 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1426 .header_size = sizeof(struct smb2_hdr),
1427 .max_header_size = MAX_SMB2_HDR_SIZE,
1428 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1429 .lock_cmd = SMB2_LOCK,
1430 .cap_unix = 0,
1431 .cap_nt_find = SMB2_NT_FIND,
1432 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 1433 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1434 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
a41a28bd 1435 .create_lease_size = sizeof(struct create_lease),
e4aa25e7
SF		 1436};
1437
1438struct smb_version_values smb30_values = {
1439 .version_string = SMB30_VERSION_STRING,
1440 .protocol_id = SMB30_PROT_ID,
1441 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
027e8eec
PS		 1442 .large_lock_type = 0,
1443 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1444 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1445 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
093b2bda
PS		 1446 .header_size = sizeof(struct smb2_hdr),
1447 .max_header_size = MAX_SMB2_HDR_SIZE,
09a4707e 1448 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2dc7e1c0 1449 .lock_cmd = SMB2_LOCK,
29e20f9c
PS		 1450 .cap_unix = 0,
1451 .cap_nt_find = SMB2_NT_FIND,
1452 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 1453 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1454 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 1455 .create_lease_size = sizeof(struct create_lease_v2),
1080ef75 1456};
20b6d8b4
SF		 1457
1458struct smb_version_values smb302_values = {
1459 .version_string = SMB302_VERSION_STRING,
1460 .protocol_id = SMB302_PROT_ID,
1461 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
1462 .large_lock_type = 0,
1463 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1464 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1465 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1466 .header_size = sizeof(struct smb2_hdr),
1467 .max_header_size = MAX_SMB2_HDR_SIZE,
1468 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1469 .lock_cmd = SMB2_LOCK,
1470 .cap_unix = 0,
1471 .cap_nt_find = SMB2_NT_FIND,
1472 .cap_large_files = SMB2_LARGE_FILES,
50285882
JL		 1473 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1474 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
f047390a 1475 .create_lease_size = sizeof(struct create_lease_v2),
20b6d8b4 1476};
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