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ARM: iop: don't use using 64-bit DMA masks
[linux/fpc-iii.git] / fs / cifs / smb2ops.c
blob97d8e2a3df9b3326c5c2391b0da7065951794b23
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
20 #include <linux/pagemap.h>
21 #include <linux/vfs.h>
22 #include <linux/falloc.h>
23 #include "cifsglob.h"
24 #include "smb2pdu.h"
25 #include "smb2proto.h"
26 #include "cifsproto.h"
27 #include "cifs_debug.h"
28 #include "cifs_unicode.h"
29 #include "smb2status.h"
30 #include "smb2glob.h"
31 #include "cifs_ioctl.h"
32
33 static int
34 change_conf(struct TCP_Server_Info *server)
35 {
36 server->credits += server->echo_credits + server->oplock_credits;
37 server->oplock_credits = server->echo_credits = 0;
38 switch (server->credits) {
39 case 0:
40 return -1;
41 case 1:
42 server->echoes = false;
43 server->oplocks = false;
44 cifs_dbg(VFS, "disabling echoes and oplocks\n");
45 break;
46 case 2:
47 server->echoes = true;
48 server->oplocks = false;
49 server->echo_credits = 1;
50 cifs_dbg(FYI, "disabling oplocks\n");
51 break;
52 default:
53 server->echoes = true;
54 if (enable_oplocks) {
55 server->oplocks = true;
56 server->oplock_credits = 1;
57 } else
58 server->oplocks = false;
59
60 server->echo_credits = 1;
61 }
62 server->credits -= server->echo_credits + server->oplock_credits;
63 return 0;
64 }
65
66 static void
67 smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
68 const int optype)
69 {
70 int *val, rc = 0;
71 spin_lock(&server->req_lock);
72 val = server->ops->get_credits_field(server, optype);
73 *val += add;
74 if (*val > 65000) {
75 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
76 printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
77 }
78 server->in_flight--;
79 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
80 rc = change_conf(server);
81 /*
82 * Sometimes server returns 0 credits on oplock break ack - we need to
83 * rebalance credits in this case.
84 */
85 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
86 server->oplocks) {
87 if (server->credits > 1) {
88 server->credits--;
89 server->oplock_credits++;
90 }
91 }
92 spin_unlock(&server->req_lock);
93 wake_up(&server->request_q);
94 if (rc)
95 cifs_reconnect(server);
96 }
97
98 static void
99 smb2_set_credits(struct TCP_Server_Info *server, const int val)
100 {
101 spin_lock(&server->req_lock);
102 server->credits = val;
103 spin_unlock(&server->req_lock);
104 }
105
106 static int *
107 smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
108 {
109 switch (optype) {
110 case CIFS_ECHO_OP:
111 return &server->echo_credits;
112 case CIFS_OBREAK_OP:
113 return &server->oplock_credits;
114 default:
115 return &server->credits;
116 }
117 }
118
119 static unsigned int
120 smb2_get_credits(struct mid_q_entry *mid)
121 {
122 return le16_to_cpu(((struct smb2_hdr *)mid->resp_buf)->CreditRequest);
123 }
124
125 static int
126 smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
127 unsigned int *num, unsigned int *credits)
128 {
129 int rc = 0;
130 unsigned int scredits;
131
132 spin_lock(&server->req_lock);
133 while (1) {
134 if (server->credits <= 0) {
135 spin_unlock(&server->req_lock);
136 cifs_num_waiters_inc(server);
137 rc = wait_event_killable(server->request_q,
138 has_credits(server, &server->credits));
139 cifs_num_waiters_dec(server);
140 if (rc)
141 return rc;
142 spin_lock(&server->req_lock);
143 } else {
144 if (server->tcpStatus == CifsExiting) {
145 spin_unlock(&server->req_lock);
146 return -ENOENT;
147 }
148
149 scredits = server->credits;
150 /* can deadlock with reopen */
151 if (scredits <= 8) {
152 *num = SMB2_MAX_BUFFER_SIZE;
153 *credits = 0;
154 break;
155 }
156
157 /* leave some credits for reopen and other ops */
158 scredits -= 8;
159 *num = min_t(unsigned int, size,
160 scredits * SMB2_MAX_BUFFER_SIZE);
161
162 *credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
163 server->credits -= *credits;
164 server->in_flight++;
165 break;
166 }
167 }
168 spin_unlock(&server->req_lock);
169 return rc;
170 }
171
172 static __u64
173 smb2_get_next_mid(struct TCP_Server_Info *server)
174 {
175 __u64 mid;
176 /* for SMB2 we need the current value */
177 spin_lock(&GlobalMid_Lock);
178 mid = server->CurrentMid++;
179 spin_unlock(&GlobalMid_Lock);
180 return mid;
181 }
182
183 static struct mid_q_entry *
184 smb2_find_mid(struct TCP_Server_Info *server, char *buf)
185 {
186 struct mid_q_entry *mid;
187 struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
188 __u64 wire_mid = le64_to_cpu(hdr->MessageId);
189
190 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
191 cifs_dbg(VFS, "encrypted frame parsing not supported yet");
192 return NULL;
193 }
194
195 spin_lock(&GlobalMid_Lock);
196 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
197 if ((mid->mid == wire_mid) &&
198 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
199 (mid->command == hdr->Command)) {
200 spin_unlock(&GlobalMid_Lock);
201 return mid;
202 }
203 }
204 spin_unlock(&GlobalMid_Lock);
205 return NULL;
206 }
207
208 static void
209 smb2_dump_detail(void *buf)
210 {
211 #ifdef CONFIG_CIFS_DEBUG2
212 struct smb2_hdr *smb = (struct smb2_hdr *)buf;
213
214 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
215 smb->Command, smb->Status, smb->Flags, smb->MessageId,
216 smb->ProcessId);
217 cifs_dbg(VFS, "smb buf %p len %u\n", smb, smb2_calc_size(smb));
218 #endif
219 }
220
221 static bool
222 smb2_need_neg(struct TCP_Server_Info *server)
223 {
224 return server->max_read == 0;
225 }
226
227 static int
228 smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
229 {
230 int rc;
231 ses->server->CurrentMid = 0;
232 rc = SMB2_negotiate(xid, ses);
233 /* BB we probably don't need to retry with modern servers */
234 if (rc == -EAGAIN)
235 rc = -EHOSTDOWN;
236 return rc;
237 }
238
239 static unsigned int
240 smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
241 {
242 struct TCP_Server_Info *server = tcon->ses->server;
243 unsigned int wsize;
244
245 /* start with specified wsize, or default */
246 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
247 wsize = min_t(unsigned int, wsize, server->max_write);
248
249 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
250 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
251
252 return wsize;
253 }
254
255 static unsigned int
256 smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
257 {
258 struct TCP_Server_Info *server = tcon->ses->server;
259 unsigned int rsize;
260
261 /* start with specified rsize, or default */
262 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
263 rsize = min_t(unsigned int, rsize, server->max_read);
264
265 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
266 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
267
268 return rsize;
269 }
270
271 #ifdef CONFIG_CIFS_STATS2
272 static int
273 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
274 {
275 int rc;
276 unsigned int ret_data_len = 0;
277 struct network_interface_info_ioctl_rsp *out_buf;
278
279 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
280 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
281 NULL /* no data input */, 0 /* no data input */,
282 (char **)&out_buf, &ret_data_len);
283 if (rc != 0)
284 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
285 else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) {
286 cifs_dbg(VFS, "server returned bad net interface info buf\n");
287 rc = -EINVAL;
288 } else {
289 /* Dump info on first interface */
290 cifs_dbg(FYI, "Adapter Capability 0x%x\t",
291 le32_to_cpu(out_buf->Capability));
292 cifs_dbg(FYI, "Link Speed %lld\n",
293 le64_to_cpu(out_buf->LinkSpeed));
294 }
295 kfree(out_buf);
296 return rc;
297 }
298 #endif /* STATS2 */
299
300 static void
301 smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
302 {
303 int rc;
304 __le16 srch_path = 0; /* Null - open root of share */
305 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
306 struct cifs_open_parms oparms;
307 struct cifs_fid fid;
308
309 oparms.tcon = tcon;
310 oparms.desired_access = FILE_READ_ATTRIBUTES;
311 oparms.disposition = FILE_OPEN;
312 oparms.create_options = 0;
313 oparms.fid = &fid;
314 oparms.reconnect = false;
315
316 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
317 if (rc)
318 return;
319
320 #ifdef CONFIG_CIFS_STATS2
321 SMB3_request_interfaces(xid, tcon);
322 #endif /* STATS2 */
323
324 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
325 FS_ATTRIBUTE_INFORMATION);
326 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
327 FS_DEVICE_INFORMATION);
328 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
329 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
330 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
331 return;
332 }
333
334 static void
335 smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
336 {
337 int rc;
338 __le16 srch_path = 0; /* Null - open root of share */
339 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
340 struct cifs_open_parms oparms;
341 struct cifs_fid fid;
342
343 oparms.tcon = tcon;
344 oparms.desired_access = FILE_READ_ATTRIBUTES;
345 oparms.disposition = FILE_OPEN;
346 oparms.create_options = 0;
347 oparms.fid = &fid;
348 oparms.reconnect = false;
349
350 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
351 if (rc)
352 return;
353
354 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
355 FS_ATTRIBUTE_INFORMATION);
356 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
357 FS_DEVICE_INFORMATION);
358 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
359 return;
360 }
361
362 static int
363 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
364 struct cifs_sb_info *cifs_sb, const char *full_path)
365 {
366 int rc;
367 __le16 *utf16_path;
368 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
369 struct cifs_open_parms oparms;
370 struct cifs_fid fid;
371
372 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
373 if (!utf16_path)
374 return -ENOMEM;
375
376 oparms.tcon = tcon;
377 oparms.desired_access = FILE_READ_ATTRIBUTES;
378 oparms.disposition = FILE_OPEN;
379 oparms.create_options = 0;
380 oparms.fid = &fid;
381 oparms.reconnect = false;
382
383 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
384 if (rc) {
385 kfree(utf16_path);
386 return rc;
387 }
388
389 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
390 kfree(utf16_path);
391 return rc;
392 }
393
394 static int
395 smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
396 struct cifs_sb_info *cifs_sb, const char *full_path,
397 u64 *uniqueid, FILE_ALL_INFO *data)
398 {
399 *uniqueid = le64_to_cpu(data->IndexNumber);
400 return 0;
401 }
402
403 static int
404 smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
405 struct cifs_fid *fid, FILE_ALL_INFO *data)
406 {
407 int rc;
408 struct smb2_file_all_info *smb2_data;
409
410 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
411 GFP_KERNEL);
412 if (smb2_data == NULL)
413 return -ENOMEM;
414
415 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
416 smb2_data);
417 if (!rc)
418 move_smb2_info_to_cifs(data, smb2_data);
419 kfree(smb2_data);
420 return rc;
421 }
422
423 static bool
424 smb2_can_echo(struct TCP_Server_Info *server)
425 {
426 return server->echoes;
427 }
428
429 static void
430 smb2_clear_stats(struct cifs_tcon *tcon)
431 {
432 #ifdef CONFIG_CIFS_STATS
433 int i;
434 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
435 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
436 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
437 }
438 #endif
439 }
440
441 static void
442 smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
443 {
444 seq_puts(m, "\n\tShare Capabilities:");
445 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
446 seq_puts(m, " DFS,");
447 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
448 seq_puts(m, " CONTINUOUS AVAILABILITY,");
449 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
450 seq_puts(m, " SCALEOUT,");
451 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
452 seq_puts(m, " CLUSTER,");
453 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
454 seq_puts(m, " ASYMMETRIC,");
455 if (tcon->capabilities == 0)
456 seq_puts(m, " None");
457 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
458 seq_puts(m, " Aligned,");
459 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
460 seq_puts(m, " Partition Aligned,");
461 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
462 seq_puts(m, " SSD,");
463 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
464 seq_puts(m, " TRIM-support,");
465
466 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
467 if (tcon->perf_sector_size)
468 seq_printf(m, "\tOptimal sector size: 0x%x",
469 tcon->perf_sector_size);
470 }
471
472 static void
473 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
474 {
475 #ifdef CONFIG_CIFS_STATS
476 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
477 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
478 seq_printf(m, "\nNegotiates: %d sent %d failed",
479 atomic_read(&sent[SMB2_NEGOTIATE_HE]),
480 atomic_read(&failed[SMB2_NEGOTIATE_HE]));
481 seq_printf(m, "\nSessionSetups: %d sent %d failed",
482 atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
483 atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
484 seq_printf(m, "\nLogoffs: %d sent %d failed",
485 atomic_read(&sent[SMB2_LOGOFF_HE]),
486 atomic_read(&failed[SMB2_LOGOFF_HE]));
487 seq_printf(m, "\nTreeConnects: %d sent %d failed",
488 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
489 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
490 seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
491 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
492 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
493 seq_printf(m, "\nCreates: %d sent %d failed",
494 atomic_read(&sent[SMB2_CREATE_HE]),
495 atomic_read(&failed[SMB2_CREATE_HE]));
496 seq_printf(m, "\nCloses: %d sent %d failed",
497 atomic_read(&sent[SMB2_CLOSE_HE]),
498 atomic_read(&failed[SMB2_CLOSE_HE]));
499 seq_printf(m, "\nFlushes: %d sent %d failed",
500 atomic_read(&sent[SMB2_FLUSH_HE]),
501 atomic_read(&failed[SMB2_FLUSH_HE]));
502 seq_printf(m, "\nReads: %d sent %d failed",
503 atomic_read(&sent[SMB2_READ_HE]),
504 atomic_read(&failed[SMB2_READ_HE]));
505 seq_printf(m, "\nWrites: %d sent %d failed",
506 atomic_read(&sent[SMB2_WRITE_HE]),
507 atomic_read(&failed[SMB2_WRITE_HE]));
508 seq_printf(m, "\nLocks: %d sent %d failed",
509 atomic_read(&sent[SMB2_LOCK_HE]),
510 atomic_read(&failed[SMB2_LOCK_HE]));
511 seq_printf(m, "\nIOCTLs: %d sent %d failed",
512 atomic_read(&sent[SMB2_IOCTL_HE]),
513 atomic_read(&failed[SMB2_IOCTL_HE]));
514 seq_printf(m, "\nCancels: %d sent %d failed",
515 atomic_read(&sent[SMB2_CANCEL_HE]),
516 atomic_read(&failed[SMB2_CANCEL_HE]));
517 seq_printf(m, "\nEchos: %d sent %d failed",
518 atomic_read(&sent[SMB2_ECHO_HE]),
519 atomic_read(&failed[SMB2_ECHO_HE]));
520 seq_printf(m, "\nQueryDirectories: %d sent %d failed",
521 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
522 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
523 seq_printf(m, "\nChangeNotifies: %d sent %d failed",
524 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
525 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
526 seq_printf(m, "\nQueryInfos: %d sent %d failed",
527 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
528 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
529 seq_printf(m, "\nSetInfos: %d sent %d failed",
530 atomic_read(&sent[SMB2_SET_INFO_HE]),
531 atomic_read(&failed[SMB2_SET_INFO_HE]));
532 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
533 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
534 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
535 #endif
536 }
537
538 static void
539 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
540 {
541 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
542 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
543
544 cfile->fid.persistent_fid = fid->persistent_fid;
545 cfile->fid.volatile_fid = fid->volatile_fid;
546 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
547 &fid->purge_cache);
548 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
549 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
550 }
551
552 static void
553 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
554 struct cifs_fid *fid)
555 {
556 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
557 }
558
559 static int
560 SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
561 u64 persistent_fid, u64 volatile_fid,
562 struct copychunk_ioctl *pcchunk)
563 {
564 int rc;
565 unsigned int ret_data_len;
566 struct resume_key_req *res_key;
567
568 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
569 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
570 NULL, 0 /* no input */,
571 (char **)&res_key, &ret_data_len);
572
573 if (rc) {
574 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
575 goto req_res_key_exit;
576 }
577 if (ret_data_len < sizeof(struct resume_key_req)) {
578 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
579 rc = -EINVAL;
580 goto req_res_key_exit;
581 }
582 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
583
584 req_res_key_exit:
585 kfree(res_key);
586 return rc;
587 }
588
589 static int
590 smb2_clone_range(const unsigned int xid,
591 struct cifsFileInfo *srcfile,
592 struct cifsFileInfo *trgtfile, u64 src_off,
593 u64 len, u64 dest_off)
594 {
595 int rc;
596 unsigned int ret_data_len;
597 struct copychunk_ioctl *pcchunk;
598 struct copychunk_ioctl_rsp *retbuf = NULL;
599 struct cifs_tcon *tcon;
600 int chunks_copied = 0;
601 bool chunk_sizes_updated = false;
602
603 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
604
605 if (pcchunk == NULL)
606 return -ENOMEM;
607
608 cifs_dbg(FYI, "in smb2_clone_range - about to call request res key\n");
609 /* Request a key from the server to identify the source of the copy */
610 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
611 srcfile->fid.persistent_fid,
612 srcfile->fid.volatile_fid, pcchunk);
613
614 /* Note: request_res_key sets res_key null only if rc !=0 */
615 if (rc)
616 goto cchunk_out;
617
618 /* For now array only one chunk long, will make more flexible later */
619 pcchunk->ChunkCount = cpu_to_le32(1);
620 pcchunk->Reserved = 0;
621 pcchunk->Reserved2 = 0;
622
623 tcon = tlink_tcon(trgtfile->tlink);
624
625 while (len > 0) {
626 pcchunk->SourceOffset = cpu_to_le64(src_off);
627 pcchunk->TargetOffset = cpu_to_le64(dest_off);
628 pcchunk->Length =
629 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
630
631 /* Request server copy to target from src identified by key */
632 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
633 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
634 true /* is_fsctl */, (char *)pcchunk,
635 sizeof(struct copychunk_ioctl), (char **)&retbuf,
636 &ret_data_len);
637 if (rc == 0) {
638 if (ret_data_len !=
639 sizeof(struct copychunk_ioctl_rsp)) {
640 cifs_dbg(VFS, "invalid cchunk response size\n");
641 rc = -EIO;
642 goto cchunk_out;
643 }
644 if (retbuf->TotalBytesWritten == 0) {
645 cifs_dbg(FYI, "no bytes copied\n");
646 rc = -EIO;
647 goto cchunk_out;
648 }
649 /*
650 * Check if server claimed to write more than we asked
651 */
652 if (le32_to_cpu(retbuf->TotalBytesWritten) >
653 le32_to_cpu(pcchunk->Length)) {
654 cifs_dbg(VFS, "invalid copy chunk response\n");
655 rc = -EIO;
656 goto cchunk_out;
657 }
658 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
659 cifs_dbg(VFS, "invalid num chunks written\n");
660 rc = -EIO;
661 goto cchunk_out;
662 }
663 chunks_copied++;
664
665 src_off += le32_to_cpu(retbuf->TotalBytesWritten);
666 dest_off += le32_to_cpu(retbuf->TotalBytesWritten);
667 len -= le32_to_cpu(retbuf->TotalBytesWritten);
668
669 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %d\n",
670 le32_to_cpu(retbuf->ChunksWritten),
671 le32_to_cpu(retbuf->ChunkBytesWritten),
672 le32_to_cpu(retbuf->TotalBytesWritten));
673 } else if (rc == -EINVAL) {
674 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
675 goto cchunk_out;
676
677 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
678 le32_to_cpu(retbuf->ChunksWritten),
679 le32_to_cpu(retbuf->ChunkBytesWritten),
680 le32_to_cpu(retbuf->TotalBytesWritten));
681
682 /*
683 * Check if this is the first request using these sizes,
684 * (ie check if copy succeed once with original sizes
685 * and check if the server gave us different sizes after
686 * we already updated max sizes on previous request).
687 * if not then why is the server returning an error now
688 */
689 if ((chunks_copied != 0) || chunk_sizes_updated)
690 goto cchunk_out;
691
692 /* Check that server is not asking us to grow size */
693 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
694 tcon->max_bytes_chunk)
695 tcon->max_bytes_chunk =
696 le32_to_cpu(retbuf->ChunkBytesWritten);
697 else
698 goto cchunk_out; /* server gave us bogus size */
699
700 /* No need to change MaxChunks since already set to 1 */
701 chunk_sizes_updated = true;
702 } else
703 goto cchunk_out;
704 }
705
706 cchunk_out:
707 kfree(pcchunk);
708 kfree(retbuf);
709 return rc;
710 }
711
712 static int
713 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
714 struct cifs_fid *fid)
715 {
716 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
717 }
718
719 static unsigned int
720 smb2_read_data_offset(char *buf)
721 {
722 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
723 return rsp->DataOffset;
724 }
725
726 static unsigned int
727 smb2_read_data_length(char *buf)
728 {
729 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
730 return le32_to_cpu(rsp->DataLength);
731 }
732
733
734 static int
735 smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
736 struct cifs_io_parms *parms, unsigned int *bytes_read,
737 char **buf, int *buf_type)
738 {
739 parms->persistent_fid = pfid->persistent_fid;
740 parms->volatile_fid = pfid->volatile_fid;
741 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
742 }
743
744 static int
745 smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
746 struct cifs_io_parms *parms, unsigned int *written,
747 struct kvec *iov, unsigned long nr_segs)
748 {
749
750 parms->persistent_fid = pfid->persistent_fid;
751 parms->volatile_fid = pfid->volatile_fid;
752 return SMB2_write(xid, parms, written, iov, nr_segs);
753 }
754
755 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
756 static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
757 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
758 {
759 struct cifsInodeInfo *cifsi;
760 int rc;
761
762 cifsi = CIFS_I(inode);
763
764 /* if file already sparse don't bother setting sparse again */
765 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
766 return true; /* already sparse */
767
768 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
769 return true; /* already not sparse */
770
771 /*
772 * Can't check for sparse support on share the usual way via the
773 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
774 * since Samba server doesn't set the flag on the share, yet
775 * supports the set sparse FSCTL and returns sparse correctly
776 * in the file attributes. If we fail setting sparse though we
777 * mark that server does not support sparse files for this share
778 * to avoid repeatedly sending the unsupported fsctl to server
779 * if the file is repeatedly extended.
780 */
781 if (tcon->broken_sparse_sup)
782 return false;
783
784 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
785 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
786 true /* is_fctl */, &setsparse, 1, NULL, NULL);
787 if (rc) {
788 tcon->broken_sparse_sup = true;
789 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
790 return false;
791 }
792
793 if (setsparse)
794 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
795 else
796 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
797
798 return true;
799 }
800
801 static int
802 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
803 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
804 {
805 __le64 eof = cpu_to_le64(size);
806 struct inode *inode;
807
808 /*
809 * If extending file more than one page make sparse. Many Linux fs
810 * make files sparse by default when extending via ftruncate
811 */
812 inode = d_inode(cfile->dentry);
813
814 if (!set_alloc && (size > inode->i_size + 8192)) {
815 __u8 set_sparse = 1;
816
817 /* whether set sparse succeeds or not, extend the file */
818 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
819 }
820
821 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
822 cfile->fid.volatile_fid, cfile->pid, &eof, false);
823 }
824
825 static int
826 smb2_duplicate_extents(const unsigned int xid,
827 struct cifsFileInfo *srcfile,
828 struct cifsFileInfo *trgtfile, u64 src_off,
829 u64 len, u64 dest_off)
830 {
831 int rc;
832 unsigned int ret_data_len;
833 struct duplicate_extents_to_file dup_ext_buf;
834 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
835
836 /* server fileays advertise duplicate extent support with this flag */
837 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
838 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
839 return -EOPNOTSUPP;
840
841 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
842 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
843 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
844 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
845 dup_ext_buf.ByteCount = cpu_to_le64(len);
846 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
847 src_off, dest_off, len);
848
849 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
850 if (rc)
851 goto duplicate_extents_out;
852
853 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
854 trgtfile->fid.volatile_fid,
855 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
856 true /* is_fsctl */, (char *)&dup_ext_buf,
857 sizeof(struct duplicate_extents_to_file),
858 NULL,
859 &ret_data_len);
860
861 if (ret_data_len > 0)
862 cifs_dbg(FYI, "non-zero response length in duplicate extents");
863
864 duplicate_extents_out:
865 return rc;
866 }
867
868 static int
869 smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
870 struct cifsFileInfo *cfile)
871 {
872 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
873 cfile->fid.volatile_fid);
874 }
875
876 static int
877 smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
878 struct cifsFileInfo *cfile)
879 {
880 struct fsctl_set_integrity_information_req integr_info;
881 unsigned int ret_data_len;
882
883 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
884 integr_info.Flags = 0;
885 integr_info.Reserved = 0;
886
887 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
888 cfile->fid.volatile_fid,
889 FSCTL_SET_INTEGRITY_INFORMATION,
890 true /* is_fsctl */, (char *)&integr_info,
891 sizeof(struct fsctl_set_integrity_information_req),
892 NULL,
893 &ret_data_len);
894
895 }
896
897 /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
898 #define GMT_TOKEN_SIZE 50
899
900 /*
901 * Input buffer contains (empty) struct smb_snapshot array with size filled in
902 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
903 */
904 static int
905 smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
906 struct cifsFileInfo *cfile, void __user *ioc_buf)
907 {
908 char *retbuf = NULL;
909 unsigned int ret_data_len = 0;
910 int rc;
911 struct smb_snapshot_array snapshot_in;
912
913 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
914 cfile->fid.volatile_fid,
915 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
916 true /* is_fsctl */, NULL, 0 /* no input data */,
917 (char **)&retbuf,
918 &ret_data_len);
919 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
920 rc, ret_data_len);
921 if (rc)
922 return rc;
923
924 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
925 /* Fixup buffer */
926 if (copy_from_user(&snapshot_in, ioc_buf,
927 sizeof(struct smb_snapshot_array))) {
928 rc = -EFAULT;
929 kfree(retbuf);
930 return rc;
931 }
932
933 /*
934 * Check for min size, ie not large enough to fit even one GMT
935 * token (snapshot). On the first ioctl some users may pass in
936 * smaller size (or zero) to simply get the size of the array
937 * so the user space caller can allocate sufficient memory
938 * and retry the ioctl again with larger array size sufficient
939 * to hold all of the snapshot GMT tokens on the second try.
940 */
941 if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
942 ret_data_len = sizeof(struct smb_snapshot_array);
943
944 /*
945 * We return struct SRV_SNAPSHOT_ARRAY, followed by
946 * the snapshot array (of 50 byte GMT tokens) each
947 * representing an available previous version of the data
948 */
949 if (ret_data_len > (snapshot_in.snapshot_array_size +
950 sizeof(struct smb_snapshot_array)))
951 ret_data_len = snapshot_in.snapshot_array_size +
952 sizeof(struct smb_snapshot_array);
953
954 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
955 rc = -EFAULT;
956 }
957
958 kfree(retbuf);
959 return rc;
960 }
961
962 static int
963 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
964 const char *path, struct cifs_sb_info *cifs_sb,
965 struct cifs_fid *fid, __u16 search_flags,
966 struct cifs_search_info *srch_inf)
967 {
968 __le16 *utf16_path;
969 int rc;
970 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
971 struct cifs_open_parms oparms;
972
973 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
974 if (!utf16_path)
975 return -ENOMEM;
976
977 oparms.tcon = tcon;
978 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
979 oparms.disposition = FILE_OPEN;
980 oparms.create_options = 0;
981 oparms.fid = fid;
982 oparms.reconnect = false;
983
984 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
985 kfree(utf16_path);
986 if (rc) {
987 cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
988 return rc;
989 }
990
991 srch_inf->entries_in_buffer = 0;
992 srch_inf->index_of_last_entry = 2;
993
994 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
995 fid->volatile_fid, 0, srch_inf);
996 if (rc) {
997 cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
998 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
999 }
1000 return rc;
1001 }
1002
1003 static int
1004 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
1005 struct cifs_fid *fid, __u16 search_flags,
1006 struct cifs_search_info *srch_inf)
1007 {
1008 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
1009 fid->volatile_fid, 0, srch_inf);
1010 }
1011
1012 static int
1013 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1014 struct cifs_fid *fid)
1015 {
1016 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1017 }
1018
1019 /*
1020 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
1021 * the number of credits and return true. Otherwise - return false.
1022 */
1023 static bool
1024 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
1025 {
1026 struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
1027
1028 if (hdr->Status != STATUS_PENDING)
1029 return false;
1030
1031 if (!length) {
1032 spin_lock(&server->req_lock);
1033 server->credits += le16_to_cpu(hdr->CreditRequest);
1034 spin_unlock(&server->req_lock);
1035 wake_up(&server->request_q);
1036 }
1037
1038 return true;
1039 }
1040
1041 static bool
1042 smb2_is_session_expired(char *buf)
1043 {
1044 struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
1045
1046 if (hdr->Status != STATUS_NETWORK_SESSION_EXPIRED)
1047 return false;
1048
1049 cifs_dbg(FYI, "Session expired\n");
1050 return true;
1051 }
1052
1053 static int
1054 smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1055 struct cifsInodeInfo *cinode)
1056 {
1057 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1058 return SMB2_lease_break(0, tcon, cinode->lease_key,
1059 smb2_get_lease_state(cinode));
1060
1061 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1062 fid->volatile_fid,
1063 CIFS_CACHE_READ(cinode) ? 1 : 0);
1064 }
1065
1066 static int
1067 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1068 struct kstatfs *buf)
1069 {
1070 int rc;
1071 __le16 srch_path = 0; /* Null - open root of share */
1072 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1073 struct cifs_open_parms oparms;
1074 struct cifs_fid fid;
1075
1076 oparms.tcon = tcon;
1077 oparms.desired_access = FILE_READ_ATTRIBUTES;
1078 oparms.disposition = FILE_OPEN;
1079 oparms.create_options = 0;
1080 oparms.fid = &fid;
1081 oparms.reconnect = false;
1082
1083 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
1084 if (rc)
1085 return rc;
1086 buf->f_type = SMB2_MAGIC_NUMBER;
1087 rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
1088 buf);
1089 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1090 return rc;
1091 }
1092
1093 static bool
1094 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
1095 {
1096 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
1097 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
1098 }
1099
1100 static int
1101 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
1102 __u64 length, __u32 type, int lock, int unlock, bool wait)
1103 {
1104 if (unlock && !lock)
1105 type = SMB2_LOCKFLAG_UNLOCK;
1106 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
1107 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
1108 current->tgid, length, offset, type, wait);
1109 }
1110
1111 static void
1112 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
1113 {
1114 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
1115 }
1116
1117 static void
1118 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
1119 {
1120 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
1121 }
1122
1123 static void
1124 smb2_new_lease_key(struct cifs_fid *fid)
1125 {
1126 generate_random_uuid(fid->lease_key);
1127 }
1128
1129 #define SMB2_SYMLINK_STRUCT_SIZE \
1130 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
1131
1132 static int
1133 smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
1134 const char *full_path, char **target_path,
1135 struct cifs_sb_info *cifs_sb)
1136 {
1137 int rc;
1138 __le16 *utf16_path;
1139 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1140 struct cifs_open_parms oparms;
1141 struct cifs_fid fid;
1142 struct smb2_err_rsp *err_buf = NULL;
1143 struct smb2_symlink_err_rsp *symlink;
1144 unsigned int sub_len;
1145 unsigned int sub_offset;
1146 unsigned int print_len;
1147 unsigned int print_offset;
1148
1149 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
1150
1151 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
1152 if (!utf16_path)
1153 return -ENOMEM;
1154
1155 oparms.tcon = tcon;
1156 oparms.desired_access = FILE_READ_ATTRIBUTES;
1157 oparms.disposition = FILE_OPEN;
1158 oparms.create_options = 0;
1159 oparms.fid = &fid;
1160 oparms.reconnect = false;
1161
1162 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf);
1163
1164 if (!rc || !err_buf) {
1165 kfree(utf16_path);
1166 return -ENOENT;
1167 }
1168
1169 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1170 get_rfc1002_length(err_buf) + 4 < SMB2_SYMLINK_STRUCT_SIZE) {
1171 kfree(utf16_path);
1172 return -ENOENT;
1173 }
1174
1175 /* open must fail on symlink - reset rc */
1176 rc = 0;
1177 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
1178 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
1179 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
1180 print_len = le16_to_cpu(symlink->PrintNameLength);
1181 print_offset = le16_to_cpu(symlink->PrintNameOffset);
1182
1183 if (get_rfc1002_length(err_buf) + 4 <
1184 SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
1185 kfree(utf16_path);
1186 return -ENOENT;
1187 }
1188
1189 if (get_rfc1002_length(err_buf) + 4 <
1190 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
1191 kfree(utf16_path);
1192 return -ENOENT;
1193 }
1194
1195 *target_path = cifs_strndup_from_utf16(
1196 (char *)symlink->PathBuffer + sub_offset,
1197 sub_len, true, cifs_sb->local_nls);
1198 if (!(*target_path)) {
1199 kfree(utf16_path);
1200 return -ENOMEM;
1201 }
1202 convert_delimiter(*target_path, '/');
1203 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
1204 kfree(utf16_path);
1205 return rc;
1206 }
1207
1208 static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
1209 loff_t offset, loff_t len, bool keep_size)
1210 {
1211 struct inode *inode;
1212 struct cifsInodeInfo *cifsi;
1213 struct cifsFileInfo *cfile = file->private_data;
1214 struct file_zero_data_information fsctl_buf;
1215 long rc;
1216 unsigned int xid;
1217
1218 xid = get_xid();
1219
1220 inode = d_inode(cfile->dentry);
1221 cifsi = CIFS_I(inode);
1222
1223 /* if file not oplocked can't be sure whether asking to extend size */
1224 if (!CIFS_CACHE_READ(cifsi))
1225 if (keep_size == false)
1226 return -EOPNOTSUPP;
1227
1228 /*
1229 * Must check if file sparse since fallocate -z (zero range) assumes
1230 * non-sparse allocation
1231 */
1232 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE))
1233 return -EOPNOTSUPP;
1234
1235 /*
1236 * need to make sure we are not asked to extend the file since the SMB3
1237 * fsctl does not change the file size. In the future we could change
1238 * this to zero the first part of the range then set the file size
1239 * which for a non sparse file would zero the newly extended range
1240 */
1241 if (keep_size == false)
1242 if (i_size_read(inode) < offset + len)
1243 return -EOPNOTSUPP;
1244
1245 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1246
1247 fsctl_buf.FileOffset = cpu_to_le64(offset);
1248 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1249
1250 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1251 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
1252 true /* is_fctl */, (char *)&fsctl_buf,
1253 sizeof(struct file_zero_data_information), NULL, NULL);
1254 free_xid(xid);
1255 return rc;
1256 }
1257
1258 static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
1259 loff_t offset, loff_t len)
1260 {
1261 struct inode *inode;
1262 struct cifsInodeInfo *cifsi;
1263 struct cifsFileInfo *cfile = file->private_data;
1264 struct file_zero_data_information fsctl_buf;
1265 long rc;
1266 unsigned int xid;
1267 __u8 set_sparse = 1;
1268
1269 xid = get_xid();
1270
1271 inode = d_inode(cfile->dentry);
1272 cifsi = CIFS_I(inode);
1273
1274 /* Need to make file sparse, if not already, before freeing range. */
1275 /* Consider adding equivalent for compressed since it could also work */
1276 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse))
1277 return -EOPNOTSUPP;
1278
1279 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1280
1281 fsctl_buf.FileOffset = cpu_to_le64(offset);
1282 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1283
1284 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1285 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
1286 true /* is_fctl */, (char *)&fsctl_buf,
1287 sizeof(struct file_zero_data_information), NULL, NULL);
1288 free_xid(xid);
1289 return rc;
1290 }
1291
1292 static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
1293 loff_t off, loff_t len, bool keep_size)
1294 {
1295 struct inode *inode;
1296 struct cifsInodeInfo *cifsi;
1297 struct cifsFileInfo *cfile = file->private_data;
1298 long rc = -EOPNOTSUPP;
1299 unsigned int xid;
1300
1301 xid = get_xid();
1302
1303 inode = d_inode(cfile->dentry);
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
1311 /*
1312 * Files are non-sparse by default so falloc may be a no-op
1313 * Must check if file sparse. If not sparse, and not extending
1314 * then no need to do anything since file already allocated
1315 */
1316 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
1317 if (keep_size == true)
1318 return 0;
1319 /* check if extending file */
1320 else if (i_size_read(inode) >= off + len)
1321 /* not extending file and already not sparse */
1322 return 0;
1323 /* BB: in future add else clause to extend file */
1324 else
1325 return -EOPNOTSUPP;
1326 }
1327
1328 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
1329 /*
1330 * Check if falloc starts within first few pages of file
1331 * and ends within a few pages of the end of file to
1332 * ensure that most of file is being forced to be
1333 * fallocated now. If so then setting whole file sparse
1334 * ie potentially making a few extra pages at the beginning
1335 * or end of the file non-sparse via set_sparse is harmless.
1336 */
1337 if ((off > 8192) || (off + len + 8192 < i_size_read(inode)))
1338 return -EOPNOTSUPP;
1339
1340 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
1341 }
1342 /* BB: else ... in future add code to extend file and set sparse */
1343
1344
1345 free_xid(xid);
1346 return rc;
1347 }
1348
1349
1350 static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
1351 loff_t off, loff_t len)
1352 {
1353 /* KEEP_SIZE already checked for by do_fallocate */
1354 if (mode & FALLOC_FL_PUNCH_HOLE)
1355 return smb3_punch_hole(file, tcon, off, len);
1356 else if (mode & FALLOC_FL_ZERO_RANGE) {
1357 if (mode & FALLOC_FL_KEEP_SIZE)
1358 return smb3_zero_range(file, tcon, off, len, true);
1359 return smb3_zero_range(file, tcon, off, len, false);
1360 } else if (mode == FALLOC_FL_KEEP_SIZE)
1361 return smb3_simple_falloc(file, tcon, off, len, true);
1362 else if (mode == 0)
1363 return smb3_simple_falloc(file, tcon, off, len, false);
1364
1365 return -EOPNOTSUPP;
1366 }
1367
1368 static void
1369 smb2_downgrade_oplock(struct TCP_Server_Info *server,
1370 struct cifsInodeInfo *cinode, bool set_level2)
1371 {
1372 if (set_level2)
1373 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
1374 0, NULL);
1375 else
1376 server->ops->set_oplock_level(cinode, 0, 0, NULL);
1377 }
1378
1379 static void
1380 smb21_downgrade_oplock(struct TCP_Server_Info *server,
1381 struct cifsInodeInfo *cinode, bool set_level2)
1382 {
1383 server->ops->set_oplock_level(cinode,
1384 set_level2 ? SMB2_LEASE_READ_CACHING_HE :
1385 0, 0, NULL);
1386 }
1387
1388 static void
1389 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1390 unsigned int epoch, bool *purge_cache)
1391 {
1392 oplock &= 0xFF;
1393 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1394 return;
1395 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
1396 cinode->oplock = CIFS_CACHE_RHW_FLG;
1397 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
1398 &cinode->vfs_inode);
1399 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
1400 cinode->oplock = CIFS_CACHE_RW_FLG;
1401 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
1402 &cinode->vfs_inode);
1403 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
1404 cinode->oplock = CIFS_CACHE_READ_FLG;
1405 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
1406 &cinode->vfs_inode);
1407 } else
1408 cinode->oplock = 0;
1409 }
1410
1411 static void
1412 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1413 unsigned int epoch, bool *purge_cache)
1414 {
1415 char message[5] = {0};
1416
1417 oplock &= 0xFF;
1418 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1419 return;
1420
1421 cinode->oplock = 0;
1422 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
1423 cinode->oplock |= CIFS_CACHE_READ_FLG;
1424 strcat(message, "R");
1425 }
1426 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
1427 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
1428 strcat(message, "H");
1429 }
1430 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
1431 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
1432 strcat(message, "W");
1433 }
1434 if (!cinode->oplock)
1435 strcat(message, "None");
1436 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
1437 &cinode->vfs_inode);
1438 }
1439
1440 static void
1441 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1442 unsigned int epoch, bool *purge_cache)
1443 {
1444 unsigned int old_oplock = cinode->oplock;
1445
1446 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
1447
1448 if (purge_cache) {
1449 *purge_cache = false;
1450 if (old_oplock == CIFS_CACHE_READ_FLG) {
1451 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
1452 (epoch - cinode->epoch > 0))
1453 *purge_cache = true;
1454 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1455 (epoch - cinode->epoch > 1))
1456 *purge_cache = true;
1457 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1458 (epoch - cinode->epoch > 1))
1459 *purge_cache = true;
1460 else if (cinode->oplock == 0 &&
1461 (epoch - cinode->epoch > 0))
1462 *purge_cache = true;
1463 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
1464 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1465 (epoch - cinode->epoch > 0))
1466 *purge_cache = true;
1467 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1468 (epoch - cinode->epoch > 1))
1469 *purge_cache = true;
1470 }
1471 cinode->epoch = epoch;
1472 }
1473 }
1474
1475 static bool
1476 smb2_is_read_op(__u32 oplock)
1477 {
1478 return oplock == SMB2_OPLOCK_LEVEL_II;
1479 }
1480
1481 static bool
1482 smb21_is_read_op(__u32 oplock)
1483 {
1484 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
1485 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
1486 }
1487
1488 static __le32
1489 map_oplock_to_lease(u8 oplock)
1490 {
1491 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
1492 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
1493 else if (oplock == SMB2_OPLOCK_LEVEL_II)
1494 return SMB2_LEASE_READ_CACHING;
1495 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
1496 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
1497 SMB2_LEASE_WRITE_CACHING;
1498 return 0;
1499 }
1500
1501 static char *
1502 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
1503 {
1504 struct create_lease *buf;
1505
1506 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
1507 if (!buf)
1508 return NULL;
1509
1510 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1511 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
1512 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
1513
1514 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1515 (struct create_lease, lcontext));
1516 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
1517 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1518 (struct create_lease, Name));
1519 buf->ccontext.NameLength = cpu_to_le16(4);
1520 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
1521 buf->Name[0] = 'R';
1522 buf->Name[1] = 'q';
1523 buf->Name[2] = 'L';
1524 buf->Name[3] = 's';
1525 return (char *)buf;
1526 }
1527
1528 static char *
1529 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
1530 {
1531 struct create_lease_v2 *buf;
1532
1533 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
1534 if (!buf)
1535 return NULL;
1536
1537 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1538 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
1539 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
1540
1541 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1542 (struct create_lease_v2, lcontext));
1543 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
1544 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1545 (struct create_lease_v2, Name));
1546 buf->ccontext.NameLength = cpu_to_le16(4);
1547 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
1548 buf->Name[0] = 'R';
1549 buf->Name[1] = 'q';
1550 buf->Name[2] = 'L';
1551 buf->Name[3] = 's';
1552 return (char *)buf;
1553 }
1554
1555 static __u8
1556 smb2_parse_lease_buf(void *buf, unsigned int *epoch)
1557 {
1558 struct create_lease *lc = (struct create_lease *)buf;
1559
1560 *epoch = 0; /* not used */
1561 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1562 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1563 return le32_to_cpu(lc->lcontext.LeaseState);
1564 }
1565
1566 static __u8
1567 smb3_parse_lease_buf(void *buf, unsigned int *epoch)
1568 {
1569 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
1570
1571 *epoch = le16_to_cpu(lc->lcontext.Epoch);
1572 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1573 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1574 return le32_to_cpu(lc->lcontext.LeaseState);
1575 }
1576
1577 static unsigned int
1578 smb2_wp_retry_size(struct inode *inode)
1579 {
1580 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
1581 SMB2_MAX_BUFFER_SIZE);
1582 }
1583
1584 static bool
1585 smb2_dir_needs_close(struct cifsFileInfo *cfile)
1586 {
1587 return !cfile->invalidHandle;
1588 }
1589
1590 struct smb_version_operations smb20_operations = {
1591 .compare_fids = smb2_compare_fids,
1592 .setup_request = smb2_setup_request,
1593 .setup_async_request = smb2_setup_async_request,
1594 .check_receive = smb2_check_receive,
1595 .add_credits = smb2_add_credits,
1596 .set_credits = smb2_set_credits,
1597 .get_credits_field = smb2_get_credits_field,
1598 .get_credits = smb2_get_credits,
1599 .wait_mtu_credits = cifs_wait_mtu_credits,
1600 .get_next_mid = smb2_get_next_mid,
1601 .read_data_offset = smb2_read_data_offset,
1602 .read_data_length = smb2_read_data_length,
1603 .map_error = map_smb2_to_linux_error,
1604 .find_mid = smb2_find_mid,
1605 .check_message = smb2_check_message,
1606 .dump_detail = smb2_dump_detail,
1607 .clear_stats = smb2_clear_stats,
1608 .print_stats = smb2_print_stats,
1609 .is_oplock_break = smb2_is_valid_oplock_break,
1610 .handle_cancelled_mid = smb2_handle_cancelled_mid,
1611 .downgrade_oplock = smb2_downgrade_oplock,
1612 .need_neg = smb2_need_neg,
1613 .negotiate = smb2_negotiate,
1614 .negotiate_wsize = smb2_negotiate_wsize,
1615 .negotiate_rsize = smb2_negotiate_rsize,
1616 .sess_setup = SMB2_sess_setup,
1617 .logoff = SMB2_logoff,
1618 .tree_connect = SMB2_tcon,
1619 .tree_disconnect = SMB2_tdis,
1620 .qfs_tcon = smb2_qfs_tcon,
1621 .is_path_accessible = smb2_is_path_accessible,
1622 .can_echo = smb2_can_echo,
1623 .echo = SMB2_echo,
1624 .query_path_info = smb2_query_path_info,
1625 .get_srv_inum = smb2_get_srv_inum,
1626 .query_file_info = smb2_query_file_info,
1627 .set_path_size = smb2_set_path_size,
1628 .set_file_size = smb2_set_file_size,
1629 .set_file_info = smb2_set_file_info,
1630 .set_compression = smb2_set_compression,
1631 .mkdir = smb2_mkdir,
1632 .mkdir_setinfo = smb2_mkdir_setinfo,
1633 .rmdir = smb2_rmdir,
1634 .unlink = smb2_unlink,
1635 .rename = smb2_rename_path,
1636 .create_hardlink = smb2_create_hardlink,
1637 .query_symlink = smb2_query_symlink,
1638 .query_mf_symlink = smb3_query_mf_symlink,
1639 .create_mf_symlink = smb3_create_mf_symlink,
1640 .open = smb2_open_file,
1641 .set_fid = smb2_set_fid,
1642 .close = smb2_close_file,
1643 .flush = smb2_flush_file,
1644 .async_readv = smb2_async_readv,
1645 .async_writev = smb2_async_writev,
1646 .sync_read = smb2_sync_read,
1647 .sync_write = smb2_sync_write,
1648 .query_dir_first = smb2_query_dir_first,
1649 .query_dir_next = smb2_query_dir_next,
1650 .close_dir = smb2_close_dir,
1651 .calc_smb_size = smb2_calc_size,
1652 .is_status_pending = smb2_is_status_pending,
1653 .is_session_expired = smb2_is_session_expired,
1654 .oplock_response = smb2_oplock_response,
1655 .queryfs = smb2_queryfs,
1656 .mand_lock = smb2_mand_lock,
1657 .mand_unlock_range = smb2_unlock_range,
1658 .push_mand_locks = smb2_push_mandatory_locks,
1659 .get_lease_key = smb2_get_lease_key,
1660 .set_lease_key = smb2_set_lease_key,
1661 .new_lease_key = smb2_new_lease_key,
1662 .calc_signature = smb2_calc_signature,
1663 .is_read_op = smb2_is_read_op,
1664 .set_oplock_level = smb2_set_oplock_level,
1665 .create_lease_buf = smb2_create_lease_buf,
1666 .parse_lease_buf = smb2_parse_lease_buf,
1667 .clone_range = smb2_clone_range,
1668 .wp_retry_size = smb2_wp_retry_size,
1669 .dir_needs_close = smb2_dir_needs_close,
1670 };
1671
1672 struct smb_version_operations smb21_operations = {
1673 .compare_fids = smb2_compare_fids,
1674 .setup_request = smb2_setup_request,
1675 .setup_async_request = smb2_setup_async_request,
1676 .check_receive = smb2_check_receive,
1677 .add_credits = smb2_add_credits,
1678 .set_credits = smb2_set_credits,
1679 .get_credits_field = smb2_get_credits_field,
1680 .get_credits = smb2_get_credits,
1681 .wait_mtu_credits = smb2_wait_mtu_credits,
1682 .get_next_mid = smb2_get_next_mid,
1683 .read_data_offset = smb2_read_data_offset,
1684 .read_data_length = smb2_read_data_length,
1685 .map_error = map_smb2_to_linux_error,
1686 .find_mid = smb2_find_mid,
1687 .check_message = smb2_check_message,
1688 .dump_detail = smb2_dump_detail,
1689 .clear_stats = smb2_clear_stats,
1690 .print_stats = smb2_print_stats,
1691 .is_oplock_break = smb2_is_valid_oplock_break,
1692 .handle_cancelled_mid = smb2_handle_cancelled_mid,
1693 .downgrade_oplock = smb21_downgrade_oplock,
1694 .need_neg = smb2_need_neg,
1695 .negotiate = smb2_negotiate,
1696 .negotiate_wsize = smb2_negotiate_wsize,
1697 .negotiate_rsize = smb2_negotiate_rsize,
1698 .sess_setup = SMB2_sess_setup,
1699 .logoff = SMB2_logoff,
1700 .tree_connect = SMB2_tcon,
1701 .tree_disconnect = SMB2_tdis,
1702 .qfs_tcon = smb2_qfs_tcon,
1703 .is_path_accessible = smb2_is_path_accessible,
1704 .can_echo = smb2_can_echo,
1705 .echo = SMB2_echo,
1706 .query_path_info = smb2_query_path_info,
1707 .get_srv_inum = smb2_get_srv_inum,
1708 .query_file_info = smb2_query_file_info,
1709 .set_path_size = smb2_set_path_size,
1710 .set_file_size = smb2_set_file_size,
1711 .set_file_info = smb2_set_file_info,
1712 .set_compression = smb2_set_compression,
1713 .mkdir = smb2_mkdir,
1714 .mkdir_setinfo = smb2_mkdir_setinfo,
1715 .rmdir = smb2_rmdir,
1716 .unlink = smb2_unlink,
1717 .rename = smb2_rename_path,
1718 .create_hardlink = smb2_create_hardlink,
1719 .query_symlink = smb2_query_symlink,
1720 .query_mf_symlink = smb3_query_mf_symlink,
1721 .create_mf_symlink = smb3_create_mf_symlink,
1722 .open = smb2_open_file,
1723 .set_fid = smb2_set_fid,
1724 .close = smb2_close_file,
1725 .flush = smb2_flush_file,
1726 .async_readv = smb2_async_readv,
1727 .async_writev = smb2_async_writev,
1728 .sync_read = smb2_sync_read,
1729 .sync_write = smb2_sync_write,
1730 .query_dir_first = smb2_query_dir_first,
1731 .query_dir_next = smb2_query_dir_next,
1732 .close_dir = smb2_close_dir,
1733 .calc_smb_size = smb2_calc_size,
1734 .is_status_pending = smb2_is_status_pending,
1735 .is_session_expired = smb2_is_session_expired,
1736 .oplock_response = smb2_oplock_response,
1737 .queryfs = smb2_queryfs,
1738 .mand_lock = smb2_mand_lock,
1739 .mand_unlock_range = smb2_unlock_range,
1740 .push_mand_locks = smb2_push_mandatory_locks,
1741 .get_lease_key = smb2_get_lease_key,
1742 .set_lease_key = smb2_set_lease_key,
1743 .new_lease_key = smb2_new_lease_key,
1744 .calc_signature = smb2_calc_signature,
1745 .is_read_op = smb21_is_read_op,
1746 .set_oplock_level = smb21_set_oplock_level,
1747 .create_lease_buf = smb2_create_lease_buf,
1748 .parse_lease_buf = smb2_parse_lease_buf,
1749 .clone_range = smb2_clone_range,
1750 .wp_retry_size = smb2_wp_retry_size,
1751 .dir_needs_close = smb2_dir_needs_close,
1752 .enum_snapshots = smb3_enum_snapshots,
1753 };
1754
1755 struct smb_version_operations smb30_operations = {
1756 .compare_fids = smb2_compare_fids,
1757 .setup_request = smb2_setup_request,
1758 .setup_async_request = smb2_setup_async_request,
1759 .check_receive = smb2_check_receive,
1760 .add_credits = smb2_add_credits,
1761 .set_credits = smb2_set_credits,
1762 .get_credits_field = smb2_get_credits_field,
1763 .get_credits = smb2_get_credits,
1764 .wait_mtu_credits = smb2_wait_mtu_credits,
1765 .get_next_mid = smb2_get_next_mid,
1766 .read_data_offset = smb2_read_data_offset,
1767 .read_data_length = smb2_read_data_length,
1768 .map_error = map_smb2_to_linux_error,
1769 .find_mid = smb2_find_mid,
1770 .check_message = smb2_check_message,
1771 .dump_detail = smb2_dump_detail,
1772 .clear_stats = smb2_clear_stats,
1773 .print_stats = smb2_print_stats,
1774 .dump_share_caps = smb2_dump_share_caps,
1775 .is_oplock_break = smb2_is_valid_oplock_break,
1776 .handle_cancelled_mid = smb2_handle_cancelled_mid,
1777 .downgrade_oplock = smb21_downgrade_oplock,
1778 .need_neg = smb2_need_neg,
1779 .negotiate = smb2_negotiate,
1780 .negotiate_wsize = smb2_negotiate_wsize,
1781 .negotiate_rsize = smb2_negotiate_rsize,
1782 .sess_setup = SMB2_sess_setup,
1783 .logoff = SMB2_logoff,
1784 .tree_connect = SMB2_tcon,
1785 .tree_disconnect = SMB2_tdis,
1786 .qfs_tcon = smb3_qfs_tcon,
1787 .is_path_accessible = smb2_is_path_accessible,
1788 .can_echo = smb2_can_echo,
1789 .echo = SMB2_echo,
1790 .query_path_info = smb2_query_path_info,
1791 .get_srv_inum = smb2_get_srv_inum,
1792 .query_file_info = smb2_query_file_info,
1793 .set_path_size = smb2_set_path_size,
1794 .set_file_size = smb2_set_file_size,
1795 .set_file_info = smb2_set_file_info,
1796 .set_compression = smb2_set_compression,
1797 .mkdir = smb2_mkdir,
1798 .mkdir_setinfo = smb2_mkdir_setinfo,
1799 .rmdir = smb2_rmdir,
1800 .unlink = smb2_unlink,
1801 .rename = smb2_rename_path,
1802 .create_hardlink = smb2_create_hardlink,
1803 .query_symlink = smb2_query_symlink,
1804 .query_mf_symlink = smb3_query_mf_symlink,
1805 .create_mf_symlink = smb3_create_mf_symlink,
1806 .open = smb2_open_file,
1807 .set_fid = smb2_set_fid,
1808 .close = smb2_close_file,
1809 .flush = smb2_flush_file,
1810 .async_readv = smb2_async_readv,
1811 .async_writev = smb2_async_writev,
1812 .sync_read = smb2_sync_read,
1813 .sync_write = smb2_sync_write,
1814 .query_dir_first = smb2_query_dir_first,
1815 .query_dir_next = smb2_query_dir_next,
1816 .close_dir = smb2_close_dir,
1817 .calc_smb_size = smb2_calc_size,
1818 .is_status_pending = smb2_is_status_pending,
1819 .is_session_expired = smb2_is_session_expired,
1820 .oplock_response = smb2_oplock_response,
1821 .queryfs = smb2_queryfs,
1822 .mand_lock = smb2_mand_lock,
1823 .mand_unlock_range = smb2_unlock_range,
1824 .push_mand_locks = smb2_push_mandatory_locks,
1825 .get_lease_key = smb2_get_lease_key,
1826 .set_lease_key = smb2_set_lease_key,
1827 .new_lease_key = smb2_new_lease_key,
1828 .generate_signingkey = generate_smb30signingkey,
1829 .calc_signature = smb3_calc_signature,
1830 .set_integrity = smb3_set_integrity,
1831 .is_read_op = smb21_is_read_op,
1832 .set_oplock_level = smb3_set_oplock_level,
1833 .create_lease_buf = smb3_create_lease_buf,
1834 .parse_lease_buf = smb3_parse_lease_buf,
1835 .clone_range = smb2_clone_range,
1836 .duplicate_extents = smb2_duplicate_extents,
1837 .validate_negotiate = smb3_validate_negotiate,
1838 .wp_retry_size = smb2_wp_retry_size,
1839 .dir_needs_close = smb2_dir_needs_close,
1840 .fallocate = smb3_fallocate,
1841 .enum_snapshots = smb3_enum_snapshots,
1842 };
1843
1844 #ifdef CONFIG_CIFS_SMB311
1845 struct smb_version_operations smb311_operations = {
1846 .compare_fids = smb2_compare_fids,
1847 .setup_request = smb2_setup_request,
1848 .setup_async_request = smb2_setup_async_request,
1849 .check_receive = smb2_check_receive,
1850 .add_credits = smb2_add_credits,
1851 .set_credits = smb2_set_credits,
1852 .get_credits_field = smb2_get_credits_field,
1853 .get_credits = smb2_get_credits,
1854 .wait_mtu_credits = smb2_wait_mtu_credits,
1855 .get_next_mid = smb2_get_next_mid,
1856 .read_data_offset = smb2_read_data_offset,
1857 .read_data_length = smb2_read_data_length,
1858 .map_error = map_smb2_to_linux_error,
1859 .find_mid = smb2_find_mid,
1860 .check_message = smb2_check_message,
1861 .dump_detail = smb2_dump_detail,
1862 .clear_stats = smb2_clear_stats,
1863 .print_stats = smb2_print_stats,
1864 .dump_share_caps = smb2_dump_share_caps,
1865 .is_oplock_break = smb2_is_valid_oplock_break,
1866 .handle_cancelled_mid = smb2_handle_cancelled_mid,
1867 .downgrade_oplock = smb21_downgrade_oplock,
1868 .need_neg = smb2_need_neg,
1869 .negotiate = smb2_negotiate,
1870 .negotiate_wsize = smb2_negotiate_wsize,
1871 .negotiate_rsize = smb2_negotiate_rsize,
1872 .sess_setup = SMB2_sess_setup,
1873 .logoff = SMB2_logoff,
1874 .tree_connect = SMB2_tcon,
1875 .tree_disconnect = SMB2_tdis,
1876 .qfs_tcon = smb3_qfs_tcon,
1877 .is_path_accessible = smb2_is_path_accessible,
1878 .can_echo = smb2_can_echo,
1879 .echo = SMB2_echo,
1880 .query_path_info = smb2_query_path_info,
1881 .get_srv_inum = smb2_get_srv_inum,
1882 .query_file_info = smb2_query_file_info,
1883 .set_path_size = smb2_set_path_size,
1884 .set_file_size = smb2_set_file_size,
1885 .set_file_info = smb2_set_file_info,
1886 .set_compression = smb2_set_compression,
1887 .mkdir = smb2_mkdir,
1888 .mkdir_setinfo = smb2_mkdir_setinfo,
1889 .rmdir = smb2_rmdir,
1890 .unlink = smb2_unlink,
1891 .rename = smb2_rename_path,
1892 .create_hardlink = smb2_create_hardlink,
1893 .query_symlink = smb2_query_symlink,
1894 .query_mf_symlink = smb3_query_mf_symlink,
1895 .create_mf_symlink = smb3_create_mf_symlink,
1896 .open = smb2_open_file,
1897 .set_fid = smb2_set_fid,
1898 .close = smb2_close_file,
1899 .flush = smb2_flush_file,
1900 .async_readv = smb2_async_readv,
1901 .async_writev = smb2_async_writev,
1902 .sync_read = smb2_sync_read,
1903 .sync_write = smb2_sync_write,
1904 .query_dir_first = smb2_query_dir_first,
1905 .query_dir_next = smb2_query_dir_next,
1906 .close_dir = smb2_close_dir,
1907 .calc_smb_size = smb2_calc_size,
1908 .is_status_pending = smb2_is_status_pending,
1909 .is_session_expired = smb2_is_session_expired,
1910 .oplock_response = smb2_oplock_response,
1911 .queryfs = smb2_queryfs,
1912 .mand_lock = smb2_mand_lock,
1913 .mand_unlock_range = smb2_unlock_range,
1914 .push_mand_locks = smb2_push_mandatory_locks,
1915 .get_lease_key = smb2_get_lease_key,
1916 .set_lease_key = smb2_set_lease_key,
1917 .new_lease_key = smb2_new_lease_key,
1918 .generate_signingkey = generate_smb311signingkey,
1919 .calc_signature = smb3_calc_signature,
1920 .set_integrity = smb3_set_integrity,
1921 .is_read_op = smb21_is_read_op,
1922 .set_oplock_level = smb3_set_oplock_level,
1923 .create_lease_buf = smb3_create_lease_buf,
1924 .parse_lease_buf = smb3_parse_lease_buf,
1925 .clone_range = smb2_clone_range,
1926 .duplicate_extents = smb2_duplicate_extents,
1927 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
1928 .wp_retry_size = smb2_wp_retry_size,
1929 .dir_needs_close = smb2_dir_needs_close,
1930 .fallocate = smb3_fallocate,
1931 .enum_snapshots = smb3_enum_snapshots,
1932 };
1933 #endif /* CIFS_SMB311 */
1934
1935 struct smb_version_values smb20_values = {
1936 .version_string = SMB20_VERSION_STRING,
1937 .protocol_id = SMB20_PROT_ID,
1938 .req_capabilities = 0, /* MBZ */
1939 .large_lock_type = 0,
1940 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1941 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1942 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1943 .header_size = sizeof(struct smb2_hdr),
1944 .max_header_size = MAX_SMB2_HDR_SIZE,
1945 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1946 .lock_cmd = SMB2_LOCK,
1947 .cap_unix = 0,
1948 .cap_nt_find = SMB2_NT_FIND,
1949 .cap_large_files = SMB2_LARGE_FILES,
1950 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1951 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1952 .create_lease_size = sizeof(struct create_lease),
1953 };
1954
1955 struct smb_version_values smb21_values = {
1956 .version_string = SMB21_VERSION_STRING,
1957 .protocol_id = SMB21_PROT_ID,
1958 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
1959 .large_lock_type = 0,
1960 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1961 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1962 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1963 .header_size = sizeof(struct smb2_hdr),
1964 .max_header_size = MAX_SMB2_HDR_SIZE,
1965 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1966 .lock_cmd = SMB2_LOCK,
1967 .cap_unix = 0,
1968 .cap_nt_find = SMB2_NT_FIND,
1969 .cap_large_files = SMB2_LARGE_FILES,
1970 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1971 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1972 .create_lease_size = sizeof(struct create_lease),
1973 };
1974
1975 struct smb_version_values smb30_values = {
1976 .version_string = SMB30_VERSION_STRING,
1977 .protocol_id = SMB30_PROT_ID,
1978 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
1979 .large_lock_type = 0,
1980 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1981 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1982 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1983 .header_size = sizeof(struct smb2_hdr),
1984 .max_header_size = MAX_SMB2_HDR_SIZE,
1985 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1986 .lock_cmd = SMB2_LOCK,
1987 .cap_unix = 0,
1988 .cap_nt_find = SMB2_NT_FIND,
1989 .cap_large_files = SMB2_LARGE_FILES,
1990 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1991 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1992 .create_lease_size = sizeof(struct create_lease_v2),
1993 };
1994
1995 struct smb_version_values smb302_values = {
1996 .version_string = SMB302_VERSION_STRING,
1997 .protocol_id = SMB302_PROT_ID,
1998 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
1999 .large_lock_type = 0,
2000 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2001 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2002 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2003 .header_size = sizeof(struct smb2_hdr),
2004 .max_header_size = MAX_SMB2_HDR_SIZE,
2005 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2006 .lock_cmd = SMB2_LOCK,
2007 .cap_unix = 0,
2008 .cap_nt_find = SMB2_NT_FIND,
2009 .cap_large_files = SMB2_LARGE_FILES,
2010 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2011 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
2012 .create_lease_size = sizeof(struct create_lease_v2),
2013 };
2014
2015 #ifdef CONFIG_CIFS_SMB311
2016 struct smb_version_values smb311_values = {
2017 .version_string = SMB311_VERSION_STRING,
2018 .protocol_id = SMB311_PROT_ID,
2019 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES,
2020 .large_lock_type = 0,
2021 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
2022 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
2023 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
2024 .header_size = sizeof(struct smb2_hdr),
2025 .max_header_size = MAX_SMB2_HDR_SIZE,
2026 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
2027 .lock_cmd = SMB2_LOCK,
2028 .cap_unix = 0,
2029 .cap_nt_find = SMB2_NT_FIND,
2030 .cap_large_files = SMB2_LARGE_FILES,
2031 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
2032 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
2033 .create_lease_size = sizeof(struct create_lease_v2),
2034 };
2035 #endif /* SMB311 */
Linux with added FPC-III support