projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
CIFS: Reconnect durable handles for SMB2
[deliverable/linux.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>
1080ef75 22#include "cifsglob.h"
2dc7e1c0
PS		 23#include "smb2pdu.h"
24#include "smb2proto.h"
28ea5290
PS		 25#include "cifsproto.h"
26#include "cifs_debug.h"
2e44b288 27#include "smb2status.h"
6fc05c25 28#include "smb2glob.h"
28ea5290
PS		 29
30static int
31change_conf(struct TCP_Server_Info *server)
32{
33 server->credits += server->echo_credits + server->oplock_credits;
34 server->oplock_credits = server->echo_credits = 0;
35 switch (server->credits) {
36 case 0:
37 return -1;
38 case 1:
39 server->echoes = false;
40 server->oplocks = false;
f96637be 41 cifs_dbg(VFS, "disabling echoes and oplocks\n");
28ea5290
PS		 42 break;
43 case 2:
44 server->echoes = true;
45 server->oplocks = false;
46 server->echo_credits = 1;
f96637be 47 cifs_dbg(FYI, "disabling oplocks\n");
28ea5290
PS		 48 break;
49 default:
50 server->echoes = true;
51 server->oplocks = true;
52 server->echo_credits = 1;
53 server->oplock_credits = 1;
54 }
55 server->credits -= server->echo_credits + server->oplock_credits;
56 return 0;
57}
58
59static void
60smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
61 const int optype)
62{
63 int *val, rc = 0;
64 spin_lock(&server->req_lock);
65 val = server->ops->get_credits_field(server, optype);
66 *val += add;
67 server->in_flight--;
ec2e4523 68 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
28ea5290 69 rc = change_conf(server);
983c88a4
PS		 70 /*
71 * Sometimes server returns 0 credits on oplock break ack - we need to
72 * rebalance credits in this case.
73 */
74 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
75 server->oplocks) {
76 if (server->credits > 1) {
77 server->credits--;
78 server->oplock_credits++;
79 }
80 }
28ea5290
PS		 81 spin_unlock(&server->req_lock);
82 wake_up(&server->request_q);
83 if (rc)
84 cifs_reconnect(server);
85}
86
87static void
88smb2_set_credits(struct TCP_Server_Info *server, const int val)
89{
90 spin_lock(&server->req_lock);
91 server->credits = val;
92 spin_unlock(&server->req_lock);
93}
94
95static int *
96smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
97{
98 switch (optype) {
99 case CIFS_ECHO_OP:
100 return &server->echo_credits;
101 case CIFS_OBREAK_OP:
102 return &server->oplock_credits;
103 default:
104 return &server->credits;
105 }
106}
107
108static unsigned int
109smb2_get_credits(struct mid_q_entry *mid)
110{
111 return le16_to_cpu(((struct smb2_hdr *)mid->resp_buf)->CreditRequest);
112}
2dc7e1c0
PS		 113
114static __u64
115smb2_get_next_mid(struct TCP_Server_Info *server)
116{
117 __u64 mid;
118 /* for SMB2 we need the current value */
119 spin_lock(&GlobalMid_Lock);
120 mid = server->CurrentMid++;
121 spin_unlock(&GlobalMid_Lock);
122 return mid;
123}
1080ef75 124
093b2bda
PS		 125static struct mid_q_entry *
126smb2_find_mid(struct TCP_Server_Info *server, char *buf)
127{
128 struct mid_q_entry *mid;
129 struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
130
131 spin_lock(&GlobalMid_Lock);
132 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
133 if ((mid->mid == hdr->MessageId) &&
134 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
135 (mid->command == hdr->Command)) {
136 spin_unlock(&GlobalMid_Lock);
137 return mid;
138 }
139 }
140 spin_unlock(&GlobalMid_Lock);
141 return NULL;
142}
143
144static void
145smb2_dump_detail(void *buf)
146{
147#ifdef CONFIG_CIFS_DEBUG2
148 struct smb2_hdr *smb = (struct smb2_hdr *)buf;
149
f96637be
JP		 150 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
151 smb->Command, smb->Status, smb->Flags, smb->MessageId,
152 smb->ProcessId);
153 cifs_dbg(VFS, "smb buf %p len %u\n", smb, smb2_calc_size(smb));
093b2bda
PS		 154#endif
155}
156
ec2e4523
PS		 157static bool
158smb2_need_neg(struct TCP_Server_Info *server)
159{
160 return server->max_read == 0;
161}
162
163static int
164smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
165{
166 int rc;
167 ses->server->CurrentMid = 0;
168 rc = SMB2_negotiate(xid, ses);
169 /* BB we probably don't need to retry with modern servers */
170 if (rc == -EAGAIN)
171 rc = -EHOSTDOWN;
172 return rc;
173}
174
3a3bab50
PS		 175static unsigned int
176smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
177{
178 struct TCP_Server_Info *server = tcon->ses->server;
179 unsigned int wsize;
180
181 /* start with specified wsize, or default */
182 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
183 wsize = min_t(unsigned int, wsize, server->max_write);
184 /*
185 * limit write size to 2 ** 16, because we don't support multicredit
186 * requests now.
187 */
188 wsize = min_t(unsigned int, wsize, 2 << 15);
189
3a3bab50
PS		 190 return wsize;
191}
192
193static unsigned int
194smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
195{
196 struct TCP_Server_Info *server = tcon->ses->server;
197 unsigned int rsize;
198
199 /* start with specified rsize, or default */
200 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
201 rsize = min_t(unsigned int, rsize, server->max_read);
202 /*
203 * limit write size to 2 ** 16, because we don't support multicredit
204 * requests now.
205 */
206 rsize = min_t(unsigned int, rsize, 2 << 15);
207
3a3bab50
PS		 208 return rsize;
209}
210
2503a0db
PS		 211static int
212smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
213 struct cifs_sb_info *cifs_sb, const char *full_path)
214{
215 int rc;
2503a0db 216 __le16 *utf16_path;
2e44b288 217 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 218 struct cifs_open_parms oparms;
219 struct cifs_fid fid;
2503a0db
PS		 220
221 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
222 if (!utf16_path)
223 return -ENOMEM;
224
064f6047
PS		 225 oparms.tcon = tcon;
226 oparms.desired_access = FILE_READ_ATTRIBUTES;
227 oparms.disposition = FILE_OPEN;
228 oparms.create_options = 0;
229 oparms.fid = &fid;
9cbc0b73 230 oparms.reconnect = false;
064f6047
PS		 231
232 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL);
2503a0db
PS		 233 if (rc) {
234 kfree(utf16_path);
235 return rc;
236 }
237
064f6047 238 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2503a0db
PS		 239 kfree(utf16_path);
240 return rc;
241}
242
be4cb9e3
PS		 243static int
244smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
245 struct cifs_sb_info *cifs_sb, const char *full_path,
246 u64 *uniqueid, FILE_ALL_INFO *data)
247{
248 *uniqueid = le64_to_cpu(data->IndexNumber);
249 return 0;
250}
251
b7546bc5
PS		 252static int
253smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
254 struct cifs_fid *fid, FILE_ALL_INFO *data)
255{
256 int rc;
257 struct smb2_file_all_info *smb2_data;
258
259 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
260 GFP_KERNEL);
261 if (smb2_data == NULL)
262 return -ENOMEM;
263
264 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
265 smb2_data);
266 if (!rc)
267 move_smb2_info_to_cifs(data, smb2_data);
268 kfree(smb2_data);
269 return rc;
270}
271
9094fad1
PS		 272static bool
273smb2_can_echo(struct TCP_Server_Info *server)
274{
275 return server->echoes;
276}
277
d60622eb
PS		 278static void
279smb2_clear_stats(struct cifs_tcon *tcon)
280{
281#ifdef CONFIG_CIFS_STATS
282 int i;
283 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
284 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
285 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
286 }
287#endif
288}
289
769ee6a4
SF		 290static void
291smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
292{
293 seq_puts(m, "\n\tShare Capabilities:");
294 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
295 seq_puts(m, " DFS,");
296 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
297 seq_puts(m, " CONTINUOUS AVAILABILITY,");
298 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
299 seq_puts(m, " SCALEOUT,");
300 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
301 seq_puts(m, " CLUSTER,");
302 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
303 seq_puts(m, " ASYMMETRIC,");
304 if (tcon->capabilities == 0)
305 seq_puts(m, " None");
306 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
307}
308
d60622eb
PS		 309static void
310smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
311{
312#ifdef CONFIG_CIFS_STATS
313 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
314 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
315 seq_printf(m, "\nNegotiates: %d sent %d failed",
316 atomic_read(&sent[SMB2_NEGOTIATE_HE]),
317 atomic_read(&failed[SMB2_NEGOTIATE_HE]));
318 seq_printf(m, "\nSessionSetups: %d sent %d failed",
319 atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
320 atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
d60622eb
PS		 321 seq_printf(m, "\nLogoffs: %d sent %d failed",
322 atomic_read(&sent[SMB2_LOGOFF_HE]),
323 atomic_read(&failed[SMB2_LOGOFF_HE]));
324 seq_printf(m, "\nTreeConnects: %d sent %d failed",
325 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
326 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
327 seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
328 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
329 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
330 seq_printf(m, "\nCreates: %d sent %d failed",
331 atomic_read(&sent[SMB2_CREATE_HE]),
332 atomic_read(&failed[SMB2_CREATE_HE]));
333 seq_printf(m, "\nCloses: %d sent %d failed",
334 atomic_read(&sent[SMB2_CLOSE_HE]),
335 atomic_read(&failed[SMB2_CLOSE_HE]));
336 seq_printf(m, "\nFlushes: %d sent %d failed",
337 atomic_read(&sent[SMB2_FLUSH_HE]),
338 atomic_read(&failed[SMB2_FLUSH_HE]));
339 seq_printf(m, "\nReads: %d sent %d failed",
340 atomic_read(&sent[SMB2_READ_HE]),
341 atomic_read(&failed[SMB2_READ_HE]));
342 seq_printf(m, "\nWrites: %d sent %d failed",
343 atomic_read(&sent[SMB2_WRITE_HE]),
344 atomic_read(&failed[SMB2_WRITE_HE]));
345 seq_printf(m, "\nLocks: %d sent %d failed",
346 atomic_read(&sent[SMB2_LOCK_HE]),
347 atomic_read(&failed[SMB2_LOCK_HE]));
348 seq_printf(m, "\nIOCTLs: %d sent %d failed",
349 atomic_read(&sent[SMB2_IOCTL_HE]),
350 atomic_read(&failed[SMB2_IOCTL_HE]));
351 seq_printf(m, "\nCancels: %d sent %d failed",
352 atomic_read(&sent[SMB2_CANCEL_HE]),
353 atomic_read(&failed[SMB2_CANCEL_HE]));
354 seq_printf(m, "\nEchos: %d sent %d failed",
355 atomic_read(&sent[SMB2_ECHO_HE]),
356 atomic_read(&failed[SMB2_ECHO_HE]));
357 seq_printf(m, "\nQueryDirectories: %d sent %d failed",
358 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
359 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
360 seq_printf(m, "\nChangeNotifies: %d sent %d failed",
361 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
362 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
363 seq_printf(m, "\nQueryInfos: %d sent %d failed",
364 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
365 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
366 seq_printf(m, "\nSetInfos: %d sent %d failed",
367 atomic_read(&sent[SMB2_SET_INFO_HE]),
368 atomic_read(&failed[SMB2_SET_INFO_HE]));
369 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
370 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
371 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
372#endif
373}
374
f0df737e
PS		 375static void
376smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
377{
2e44b288 378 struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
f0df737e
PS		 379 cfile->fid.persistent_fid = fid->persistent_fid;
380 cfile->fid.volatile_fid = fid->volatile_fid;
2e44b288 381 smb2_set_oplock_level(cinode, oplock);
b140799a 382 cinode->can_cache_brlcks = cinode->clientCanCacheAll;
f0df737e
PS		 383}
384
760ad0ca 385static void
f0df737e
PS		 386smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
387 struct cifs_fid *fid)
388{
760ad0ca 389 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
f0df737e
PS		 390}
391
7a5cfb19
PS		 392static int
393smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
394 struct cifs_fid *fid)
395{
396 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
397}
398
09a4707e
PS		 399static unsigned int
400smb2_read_data_offset(char *buf)
401{
402 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
403 return rsp->DataOffset;
404}
405
406static unsigned int
407smb2_read_data_length(char *buf)
408{
409 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
410 return le32_to_cpu(rsp->DataLength);
411}
412
d8e05039
PS		 413
414static int
415smb2_sync_read(const unsigned int xid, struct cifsFileInfo *cfile,
416 struct cifs_io_parms *parms, unsigned int *bytes_read,
417 char **buf, int *buf_type)
418{
419 parms->persistent_fid = cfile->fid.persistent_fid;
420 parms->volatile_fid = cfile->fid.volatile_fid;
421 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
422}
423
009d3443
PS		 424static int
425smb2_sync_write(const unsigned int xid, struct cifsFileInfo *cfile,
426 struct cifs_io_parms *parms, unsigned int *written,
427 struct kvec *iov, unsigned long nr_segs)
428{
429
430 parms->persistent_fid = cfile->fid.persistent_fid;
431 parms->volatile_fid = cfile->fid.volatile_fid;
432 return SMB2_write(xid, parms, written, iov, nr_segs);
433}
434
c839ff24
PS		 435static int
436smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
437 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
438{
439 __le64 eof = cpu_to_le64(size);
440 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
441 cfile->fid.volatile_fid, cfile->pid, &eof);
442}
443
d324f08d
PS		 444static int
445smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
446 const char *path, struct cifs_sb_info *cifs_sb,
447 struct cifs_fid *fid, __u16 search_flags,
448 struct cifs_search_info *srch_inf)
449{
450 __le16 *utf16_path;
451 int rc;
2e44b288 452 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047 453 struct cifs_open_parms oparms;
d324f08d
PS		 454
455 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
456 if (!utf16_path)
457 return -ENOMEM;
458
064f6047
PS		 459 oparms.tcon = tcon;
460 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
461 oparms.disposition = FILE_OPEN;
462 oparms.create_options = 0;
463 oparms.fid = fid;
9cbc0b73 464 oparms.reconnect = false;
064f6047
PS		 465
466 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL);
d324f08d
PS		 467 kfree(utf16_path);
468 if (rc) {
f96637be 469 cifs_dbg(VFS, "open dir failed\n");
d324f08d
PS		 470 return rc;
471 }
472
473 srch_inf->entries_in_buffer = 0;
474 srch_inf->index_of_last_entry = 0;
d324f08d 475
064f6047
PS		 476 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
477 fid->volatile_fid, 0, srch_inf);
d324f08d 478 if (rc) {
f96637be 479 cifs_dbg(VFS, "query directory failed\n");
064f6047 480 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
d324f08d
PS		 481 }
482 return rc;
483}
484
485static int
486smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
487 struct cifs_fid *fid, __u16 search_flags,
488 struct cifs_search_info *srch_inf)
489{
490 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
491 fid->volatile_fid, 0, srch_inf);
492}
493
494static int
495smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
496 struct cifs_fid *fid)
497{
498 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
499}
500
2e44b288
PS		 501/*
502* If we negotiate SMB2 protocol and get STATUS_PENDING - update
503* the number of credits and return true. Otherwise - return false.
504*/
505static bool
506smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
507{
508 struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
509
12e8a208 510 if (hdr->Status != STATUS_PENDING)
2e44b288
PS		 511 return false;
512
513 if (!length) {
514 spin_lock(&server->req_lock);
515 server->credits += le16_to_cpu(hdr->CreditRequest);
516 spin_unlock(&server->req_lock);
517 wake_up(&server->request_q);
518 }
519
520 return true;
521}
522
983c88a4
PS		 523static int
524smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
525 struct cifsInodeInfo *cinode)
526{
0822f514
PS		 527 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
528 return SMB2_lease_break(0, tcon, cinode->lease_key,
529 smb2_get_lease_state(cinode));
530
983c88a4
PS		 531 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
532 fid->volatile_fid,
533 cinode->clientCanCacheRead ? 1 : 0);
534}
535
6fc05c25
PS		 536static int
537smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
538 struct kstatfs *buf)
539{
540 int rc;
6fc05c25
PS		 541 __le16 srch_path = 0; /* Null - open root of share */
542 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
064f6047
PS		 543 struct cifs_open_parms oparms;
544 struct cifs_fid fid;
545
546 oparms.tcon = tcon;
547 oparms.desired_access = FILE_READ_ATTRIBUTES;
548 oparms.disposition = FILE_OPEN;
549 oparms.create_options = 0;
550 oparms.fid = &fid;
9cbc0b73 551 oparms.reconnect = false;
6fc05c25 552
064f6047 553 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL);
6fc05c25
PS		 554 if (rc)
555 return rc;
556 buf->f_type = SMB2_MAGIC_NUMBER;
064f6047
PS		 557 rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
558 buf);
559 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
6fc05c25
PS		 560 return rc;
561}
562
027e8eec
PS		 563static bool
564smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
565{
566 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
567 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
568}
569
f7ba7fe6
PS		 570static int
571smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
572 __u64 length, __u32 type, int lock, int unlock, bool wait)
573{
574 if (unlock && !lock)
575 type = SMB2_LOCKFLAG_UNLOCK;
576 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
577 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
578 current->tgid, length, offset, type, wait);
579}
580
b8c32dbb
PS		 581static void
582smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
583{
584 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
585}
586
587static void
588smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
589{
590 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
591}
592
593static void
594smb2_new_lease_key(struct cifs_fid *fid)
595{
596 get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE);
597}
598
1080ef75 599struct smb_version_operations smb21_operations = {
027e8eec 600 .compare_fids = smb2_compare_fids,
2dc7e1c0 601 .setup_request = smb2_setup_request,
c95b8eed 602 .setup_async_request = smb2_setup_async_request,
2dc7e1c0 603 .check_receive = smb2_check_receive,
28ea5290
PS		 604 .add_credits = smb2_add_credits,
605 .set_credits = smb2_set_credits,
606 .get_credits_field = smb2_get_credits_field,
607 .get_credits = smb2_get_credits,
2dc7e1c0 608 .get_next_mid = smb2_get_next_mid,
09a4707e
PS		 609 .read_data_offset = smb2_read_data_offset,
610 .read_data_length = smb2_read_data_length,
611 .map_error = map_smb2_to_linux_error,
093b2bda
PS		 612 .find_mid = smb2_find_mid,
613 .check_message = smb2_check_message,
614 .dump_detail = smb2_dump_detail,
d60622eb
PS		 615 .clear_stats = smb2_clear_stats,
616 .print_stats = smb2_print_stats,
983c88a4 617 .is_oplock_break = smb2_is_valid_oplock_break,
ec2e4523
PS		 618 .need_neg = smb2_need_neg,
619 .negotiate = smb2_negotiate,
3a3bab50
PS		 620 .negotiate_wsize = smb2_negotiate_wsize,
621 .negotiate_rsize = smb2_negotiate_rsize,
5478f9ba
PS		 622 .sess_setup = SMB2_sess_setup,
623 .logoff = SMB2_logoff,
faaf946a
PS		 624 .tree_connect = SMB2_tcon,
625 .tree_disconnect = SMB2_tdis,
2503a0db 626 .is_path_accessible = smb2_is_path_accessible,
9094fad1
PS		 627 .can_echo = smb2_can_echo,
628 .echo = SMB2_echo,
be4cb9e3
PS		 629 .query_path_info = smb2_query_path_info,
630 .get_srv_inum = smb2_get_srv_inum,
b7546bc5 631 .query_file_info = smb2_query_file_info,
c839ff24
PS		 632 .set_path_size = smb2_set_path_size,
633 .set_file_size = smb2_set_file_size,
1feeaac7 634 .set_file_info = smb2_set_file_info,
a0e73183
PS		 635 .mkdir = smb2_mkdir,
636 .mkdir_setinfo = smb2_mkdir_setinfo,
1a500f01 637 .rmdir = smb2_rmdir,
cbe6f439 638 .unlink = smb2_unlink,
35143eb5 639 .rename = smb2_rename_path,
568798cc 640 .create_hardlink = smb2_create_hardlink,
f0df737e
PS		 641 .open = smb2_open_file,
642 .set_fid = smb2_set_fid,
643 .close = smb2_close_file,
7a5cfb19 644 .flush = smb2_flush_file,
09a4707e 645 .async_readv = smb2_async_readv,
33319141 646 .async_writev = smb2_async_writev,
d8e05039 647 .sync_read = smb2_sync_read,
009d3443 648 .sync_write = smb2_sync_write,
d324f08d
PS		 649 .query_dir_first = smb2_query_dir_first,
650 .query_dir_next = smb2_query_dir_next,
651 .close_dir = smb2_close_dir,
652 .calc_smb_size = smb2_calc_size,
2e44b288 653 .is_status_pending = smb2_is_status_pending,
983c88a4 654 .oplock_response = smb2_oplock_response,
6fc05c25 655 .queryfs = smb2_queryfs,
f7ba7fe6
PS		 656 .mand_lock = smb2_mand_lock,
657 .mand_unlock_range = smb2_unlock_range,
b140799a 658 .push_mand_locks = smb2_push_mandatory_locks,
b8c32dbb
PS		 659 .get_lease_key = smb2_get_lease_key,
660 .set_lease_key = smb2_set_lease_key,
661 .new_lease_key = smb2_new_lease_key,
38107d45
SF		 662 .calc_signature = smb2_calc_signature,
663};
664
665
666struct smb_version_operations smb30_operations = {
667 .compare_fids = smb2_compare_fids,
668 .setup_request = smb2_setup_request,
669 .setup_async_request = smb2_setup_async_request,
670 .check_receive = smb2_check_receive,
671 .add_credits = smb2_add_credits,
672 .set_credits = smb2_set_credits,
673 .get_credits_field = smb2_get_credits_field,
674 .get_credits = smb2_get_credits,
675 .get_next_mid = smb2_get_next_mid,
676 .read_data_offset = smb2_read_data_offset,
677 .read_data_length = smb2_read_data_length,
678 .map_error = map_smb2_to_linux_error,
679 .find_mid = smb2_find_mid,
680 .check_message = smb2_check_message,
681 .dump_detail = smb2_dump_detail,
682 .clear_stats = smb2_clear_stats,
683 .print_stats = smb2_print_stats,
769ee6a4 684 .dump_share_caps = smb2_dump_share_caps,
38107d45
SF		 685 .is_oplock_break = smb2_is_valid_oplock_break,
686 .need_neg = smb2_need_neg,
687 .negotiate = smb2_negotiate,
688 .negotiate_wsize = smb2_negotiate_wsize,
689 .negotiate_rsize = smb2_negotiate_rsize,
690 .sess_setup = SMB2_sess_setup,
691 .logoff = SMB2_logoff,
692 .tree_connect = SMB2_tcon,
693 .tree_disconnect = SMB2_tdis,
694 .is_path_accessible = smb2_is_path_accessible,
695 .can_echo = smb2_can_echo,
696 .echo = SMB2_echo,
697 .query_path_info = smb2_query_path_info,
698 .get_srv_inum = smb2_get_srv_inum,
699 .query_file_info = smb2_query_file_info,
700 .set_path_size = smb2_set_path_size,
701 .set_file_size = smb2_set_file_size,
702 .set_file_info = smb2_set_file_info,
703 .mkdir = smb2_mkdir,
704 .mkdir_setinfo = smb2_mkdir_setinfo,
705 .rmdir = smb2_rmdir,
706 .unlink = smb2_unlink,
707 .rename = smb2_rename_path,
708 .create_hardlink = smb2_create_hardlink,
709 .open = smb2_open_file,
710 .set_fid = smb2_set_fid,
711 .close = smb2_close_file,
712 .flush = smb2_flush_file,
713 .async_readv = smb2_async_readv,
714 .async_writev = smb2_async_writev,
715 .sync_read = smb2_sync_read,
716 .sync_write = smb2_sync_write,
717 .query_dir_first = smb2_query_dir_first,
718 .query_dir_next = smb2_query_dir_next,
719 .close_dir = smb2_close_dir,
720 .calc_smb_size = smb2_calc_size,
721 .is_status_pending = smb2_is_status_pending,
722 .oplock_response = smb2_oplock_response,
723 .queryfs = smb2_queryfs,
724 .mand_lock = smb2_mand_lock,
725 .mand_unlock_range = smb2_unlock_range,
726 .push_mand_locks = smb2_push_mandatory_locks,
727 .get_lease_key = smb2_get_lease_key,
728 .set_lease_key = smb2_set_lease_key,
729 .new_lease_key = smb2_new_lease_key,
e65a5cb4 730 .generate_signingkey = generate_smb3signingkey,
38107d45 731 .calc_signature = smb3_calc_signature,
1080ef75
SF		 732};
733
dd446b16
SF		 734struct smb_version_values smb20_values = {
735 .version_string = SMB20_VERSION_STRING,
736 .protocol_id = SMB20_PROT_ID,
737 .req_capabilities = 0, /* MBZ */
738 .large_lock_type = 0,
739 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
740 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
741 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
742 .header_size = sizeof(struct smb2_hdr),
743 .max_header_size = MAX_SMB2_HDR_SIZE,
744 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
745 .lock_cmd = SMB2_LOCK,
746 .cap_unix = 0,
747 .cap_nt_find = SMB2_NT_FIND,
748 .cap_large_files = SMB2_LARGE_FILES,
63b7d3a4 749 .oplock_read = SMB2_OPLOCK_LEVEL_II,
50285882
JL		 750 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
751 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
dd446b16
SF		 752};
753
1080ef75
SF		 754struct smb_version_values smb21_values = {
755 .version_string = SMB21_VERSION_STRING,
e4aa25e7
SF		 756 .protocol_id = SMB21_PROT_ID,
757 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
758 .large_lock_type = 0,
759 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
760 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
761 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
762 .header_size = sizeof(struct smb2_hdr),
763 .max_header_size = MAX_SMB2_HDR_SIZE,
764 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
765 .lock_cmd = SMB2_LOCK,
766 .cap_unix = 0,
767 .cap_nt_find = SMB2_NT_FIND,
768 .cap_large_files = SMB2_LARGE_FILES,
63b7d3a4 769 .oplock_read = SMB2_OPLOCK_LEVEL_II,
50285882
JL		 770 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
771 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
e4aa25e7
SF		 772};
773
774struct smb_version_values smb30_values = {
775 .version_string = SMB30_VERSION_STRING,
776 .protocol_id = SMB30_PROT_ID,
777 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
027e8eec
PS		 778 .large_lock_type = 0,
779 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
780 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
781 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
093b2bda
PS		 782 .header_size = sizeof(struct smb2_hdr),
783 .max_header_size = MAX_SMB2_HDR_SIZE,
09a4707e 784 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2dc7e1c0 785 .lock_cmd = SMB2_LOCK,
29e20f9c
PS		 786 .cap_unix = 0,
787 .cap_nt_find = SMB2_NT_FIND,
788 .cap_large_files = SMB2_LARGE_FILES,
067785c4 789 .oplock_read = SMB2_OPLOCK_LEVEL_II,
50285882
JL		 790 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
791 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1080ef75 792};
20b6d8b4
SF		 793
794struct smb_version_values smb302_values = {
795 .version_string = SMB302_VERSION_STRING,
796 .protocol_id = SMB302_PROT_ID,
797 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
798 .large_lock_type = 0,
799 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
800 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
801 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
802 .header_size = sizeof(struct smb2_hdr),
803 .max_header_size = MAX_SMB2_HDR_SIZE,
804 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
805 .lock_cmd = SMB2_LOCK,
806 .cap_unix = 0,
807 .cap_nt_find = SMB2_NT_FIND,
808 .cap_large_files = SMB2_LARGE_FILES,
809 .oplock_read = SMB2_OPLOCK_LEVEL_II,
50285882
JL		 810 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
811 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
20b6d8b4 812};
Linux kernel - Deliverables
This page took 0.11938 seconds and 5 git commands to generate.