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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 "cifsglob.h"
21
22struct smb_version_operations smb21_operations = {
23};
24
25struct smb_version_values smb21_values = {
26 .version_string = SMB21_VERSION_STRING,
27};
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
32static int
33change_conf(struct TCP_Server_Info *server)
34{
35 server->credits += server->echo_credits + server->oplock_credits;
36 server->oplock_credits = server->echo_credits = 0;
37 switch (server->credits) {
38 case 0:
39 return -1;
40 case 1:
41 server->echoes = false;
42 server->oplocks = false;
43 cifs_dbg(VFS, "disabling echoes and oplocks\n");
44 break;
45 case 2:
46 server->echoes = true;
47 server->oplocks = false;
48 server->echo_credits = 1;
49 cifs_dbg(FYI, "disabling oplocks\n");
50 break;
51 default:
52 server->echoes = true;
53 if (enable_oplocks) {
54 server->oplocks = true;
55 server->oplock_credits = 1;
56 } else
57 server->oplocks = false;
58
59 server->echo_credits = 1;
60 }
61 server->credits -= server->echo_credits + server->oplock_credits;
62 return 0;
63}
64
65static void
66smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
67 const int optype)
68{
69 int *val, rc = 0;
70 spin_lock(&server->req_lock);
71 val = server->ops->get_credits_field(server, optype);
72 *val += add;
73 server->in_flight--;
74 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
75 rc = change_conf(server);
76 /*
77 * Sometimes server returns 0 credits on oplock break ack - we need to
78 * rebalance credits in this case.
79 */
80 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
81 server->oplocks) {
82 if (server->credits > 1) {
83 server->credits--;
84 server->oplock_credits++;
85 }
86 }
87 spin_unlock(&server->req_lock);
88 wake_up(&server->request_q);
89 if (rc)
90 cifs_reconnect(server);
91}
92
93static void
94smb2_set_credits(struct TCP_Server_Info *server, const int val)
95{
96 spin_lock(&server->req_lock);
97 server->credits = val;
98 spin_unlock(&server->req_lock);
99}
100
101static int *
102smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
103{
104 switch (optype) {
105 case CIFS_ECHO_OP:
106 return &server->echo_credits;
107 case CIFS_OBREAK_OP:
108 return &server->oplock_credits;
109 default:
110 return &server->credits;
111 }
112}
113
114static unsigned int
115smb2_get_credits(struct mid_q_entry *mid)
116{
117 return le16_to_cpu(((struct smb2_hdr *)mid->resp_buf)->CreditRequest);
118}
119
120static int
121smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
122 unsigned int *num, unsigned int *credits)
123{
124 int rc = 0;
125 unsigned int scredits;
126
127 spin_lock(&server->req_lock);
128 while (1) {
129 if (server->credits <= 0) {
130 spin_unlock(&server->req_lock);
131 cifs_num_waiters_inc(server);
132 rc = wait_event_killable(server->request_q,
133 has_credits(server, &server->credits));
134 cifs_num_waiters_dec(server);
135 if (rc)
136 return rc;
137 spin_lock(&server->req_lock);
138 } else {
139 if (server->tcpStatus == CifsExiting) {
140 spin_unlock(&server->req_lock);
141 return -ENOENT;
142 }
143
144 scredits = server->credits;
145 /* can deadlock with reopen */
146 if (scredits == 1) {
147 *num = SMB2_MAX_BUFFER_SIZE;
148 *credits = 0;
149 break;
150 }
151
152 /* leave one credit for a possible reopen */
153 scredits--;
154 *num = min_t(unsigned int, size,
155 scredits * SMB2_MAX_BUFFER_SIZE);
156
157 *credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
158 server->credits -= *credits;
159 server->in_flight++;
160 break;
161 }
162 }
163 spin_unlock(&server->req_lock);
164 return rc;
165}
166
167static __u64
168smb2_get_next_mid(struct TCP_Server_Info *server)
169{
170 __u64 mid;
171 /* for SMB2 we need the current value */
172 spin_lock(&GlobalMid_Lock);
173 mid = server->CurrentMid++;
174 spin_unlock(&GlobalMid_Lock);
175 return mid;
176}
177
178static struct mid_q_entry *
179smb2_find_mid(struct TCP_Server_Info *server, char *buf)
180{
181 struct mid_q_entry *mid;
182 struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
183 __u64 wire_mid = le64_to_cpu(hdr->MessageId);
184
185 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
186 cifs_dbg(VFS, "encrypted frame parsing not supported yet");
187 return NULL;
188 }
189
190 spin_lock(&GlobalMid_Lock);
191 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
192 if ((mid->mid == wire_mid) &&
193 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
194 (mid->command == hdr->Command)) {
195 spin_unlock(&GlobalMid_Lock);
196 return mid;
197 }
198 }
199 spin_unlock(&GlobalMid_Lock);
200 return NULL;
201}
202
203static void
204smb2_dump_detail(void *buf)
205{
206#ifdef CONFIG_CIFS_DEBUG2
207 struct smb2_hdr *smb = (struct smb2_hdr *)buf;
208
209 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
210 smb->Command, smb->Status, smb->Flags, smb->MessageId,
211 smb->ProcessId);
212 cifs_dbg(VFS, "smb buf %p len %u\n", smb, smb2_calc_size(smb));
213#endif
214}
215
216static bool
217smb2_need_neg(struct TCP_Server_Info *server)
218{
219 return server->max_read == 0;
220}
221
222static int
223smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
224{
225 int rc;
226 ses->server->CurrentMid = 0;
227 rc = SMB2_negotiate(xid, ses);
228 /* BB we probably don't need to retry with modern servers */
229 if (rc == -EAGAIN)
230 rc = -EHOSTDOWN;
231 return rc;
232}
233
234static unsigned int
235smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
236{
237 struct TCP_Server_Info *server = tcon->ses->server;
238 unsigned int wsize;
239
240 /* start with specified wsize, or default */
241 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
242 wsize = min_t(unsigned int, wsize, server->max_write);
243
244 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
245 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
246
247 return wsize;
248}
249
250static unsigned int
251smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
252{
253 struct TCP_Server_Info *server = tcon->ses->server;
254 unsigned int rsize;
255
256 /* start with specified rsize, or default */
257 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
258 rsize = min_t(unsigned int, rsize, server->max_read);
259
260 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
261 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
262
263 return rsize;
264}
265
266#ifdef CONFIG_CIFS_STATS2
267static int
268SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
269{
270 int rc;
271 unsigned int ret_data_len = 0;
272 struct network_interface_info_ioctl_rsp *out_buf;
273
274 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
275 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
276 NULL /* no data input */, 0 /* no data input */,
277 (char **)&out_buf, &ret_data_len);
278 if (rc != 0)
279 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
280 else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) {
281 cifs_dbg(VFS, "server returned bad net interface info buf\n");
282 rc = -EINVAL;
283 } else {
284 /* Dump info on first interface */
285 cifs_dbg(FYI, "Adapter Capability 0x%x\t",
286 le32_to_cpu(out_buf->Capability));
287 cifs_dbg(FYI, "Link Speed %lld\n",
288 le64_to_cpu(out_buf->LinkSpeed));
289 }
290
291 return rc;
292}
293#endif /* STATS2 */
294
295static void
296smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
297{
298 int rc;
299 __le16 srch_path = 0; /* Null - open root of share */
300 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
301 struct cifs_open_parms oparms;
302 struct cifs_fid fid;
303
304 oparms.tcon = tcon;
305 oparms.desired_access = FILE_READ_ATTRIBUTES;
306 oparms.disposition = FILE_OPEN;
307 oparms.create_options = 0;
308 oparms.fid = &fid;
309 oparms.reconnect = false;
310
311 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
312 if (rc)
313 return;
314
315#ifdef CONFIG_CIFS_STATS2
316 SMB3_request_interfaces(xid, tcon);
317#endif /* STATS2 */
318
319 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
320 FS_ATTRIBUTE_INFORMATION);
321 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
322 FS_DEVICE_INFORMATION);
323 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
324 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
325 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
326 return;
327}
328
329static void
330smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
331{
332 int rc;
333 __le16 srch_path = 0; /* Null - open root of share */
334 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
335 struct cifs_open_parms oparms;
336 struct cifs_fid fid;
337
338 oparms.tcon = tcon;
339 oparms.desired_access = FILE_READ_ATTRIBUTES;
340 oparms.disposition = FILE_OPEN;
341 oparms.create_options = 0;
342 oparms.fid = &fid;
343 oparms.reconnect = false;
344
345 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
346 if (rc)
347 return;
348
349 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
350 FS_ATTRIBUTE_INFORMATION);
351 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
352 FS_DEVICE_INFORMATION);
353 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
354 return;
355}
356
357static int
358smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
359 struct cifs_sb_info *cifs_sb, const char *full_path)
360{
361 int rc;
362 __le16 *utf16_path;
363 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
364 struct cifs_open_parms oparms;
365 struct cifs_fid fid;
366
367 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
368 if (!utf16_path)
369 return -ENOMEM;
370
371 oparms.tcon = tcon;
372 oparms.desired_access = FILE_READ_ATTRIBUTES;
373 oparms.disposition = FILE_OPEN;
374 oparms.create_options = 0;
375 oparms.fid = &fid;
376 oparms.reconnect = false;
377
378 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
379 if (rc) {
380 kfree(utf16_path);
381 return rc;
382 }
383
384 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
385 kfree(utf16_path);
386 return rc;
387}
388
389static int
390smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
391 struct cifs_sb_info *cifs_sb, const char *full_path,
392 u64 *uniqueid, FILE_ALL_INFO *data)
393{
394 *uniqueid = le64_to_cpu(data->IndexNumber);
395 return 0;
396}
397
398static int
399smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
400 struct cifs_fid *fid, FILE_ALL_INFO *data)
401{
402 int rc;
403 struct smb2_file_all_info *smb2_data;
404
405 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
406 GFP_KERNEL);
407 if (smb2_data == NULL)
408 return -ENOMEM;
409
410 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
411 smb2_data);
412 if (!rc)
413 move_smb2_info_to_cifs(data, smb2_data);
414 kfree(smb2_data);
415 return rc;
416}
417
418static bool
419smb2_can_echo(struct TCP_Server_Info *server)
420{
421 return server->echoes;
422}
423
424static void
425smb2_clear_stats(struct cifs_tcon *tcon)
426{
427#ifdef CONFIG_CIFS_STATS
428 int i;
429 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
430 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
431 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
432 }
433#endif
434}
435
436static void
437smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
438{
439 seq_puts(m, "\n\tShare Capabilities:");
440 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
441 seq_puts(m, " DFS,");
442 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
443 seq_puts(m, " CONTINUOUS AVAILABILITY,");
444 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
445 seq_puts(m, " SCALEOUT,");
446 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
447 seq_puts(m, " CLUSTER,");
448 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
449 seq_puts(m, " ASYMMETRIC,");
450 if (tcon->capabilities == 0)
451 seq_puts(m, " None");
452 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
453 seq_puts(m, " Aligned,");
454 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
455 seq_puts(m, " Partition Aligned,");
456 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
457 seq_puts(m, " SSD,");
458 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
459 seq_puts(m, " TRIM-support,");
460
461 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
462 if (tcon->perf_sector_size)
463 seq_printf(m, "\tOptimal sector size: 0x%x",
464 tcon->perf_sector_size);
465}
466
467static void
468smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
469{
470#ifdef CONFIG_CIFS_STATS
471 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
472 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
473 seq_printf(m, "\nNegotiates: %d sent %d failed",
474 atomic_read(&sent[SMB2_NEGOTIATE_HE]),
475 atomic_read(&failed[SMB2_NEGOTIATE_HE]));
476 seq_printf(m, "\nSessionSetups: %d sent %d failed",
477 atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
478 atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
479 seq_printf(m, "\nLogoffs: %d sent %d failed",
480 atomic_read(&sent[SMB2_LOGOFF_HE]),
481 atomic_read(&failed[SMB2_LOGOFF_HE]));
482 seq_printf(m, "\nTreeConnects: %d sent %d failed",
483 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
484 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
485 seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
486 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
487 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
488 seq_printf(m, "\nCreates: %d sent %d failed",
489 atomic_read(&sent[SMB2_CREATE_HE]),
490 atomic_read(&failed[SMB2_CREATE_HE]));
491 seq_printf(m, "\nCloses: %d sent %d failed",
492 atomic_read(&sent[SMB2_CLOSE_HE]),
493 atomic_read(&failed[SMB2_CLOSE_HE]));
494 seq_printf(m, "\nFlushes: %d sent %d failed",
495 atomic_read(&sent[SMB2_FLUSH_HE]),
496 atomic_read(&failed[SMB2_FLUSH_HE]));
497 seq_printf(m, "\nReads: %d sent %d failed",
498 atomic_read(&sent[SMB2_READ_HE]),
499 atomic_read(&failed[SMB2_READ_HE]));
500 seq_printf(m, "\nWrites: %d sent %d failed",
501 atomic_read(&sent[SMB2_WRITE_HE]),
502 atomic_read(&failed[SMB2_WRITE_HE]));
503 seq_printf(m, "\nLocks: %d sent %d failed",
504 atomic_read(&sent[SMB2_LOCK_HE]),
505 atomic_read(&failed[SMB2_LOCK_HE]));
506 seq_printf(m, "\nIOCTLs: %d sent %d failed",
507 atomic_read(&sent[SMB2_IOCTL_HE]),
508 atomic_read(&failed[SMB2_IOCTL_HE]));
509 seq_printf(m, "\nCancels: %d sent %d failed",
510 atomic_read(&sent[SMB2_CANCEL_HE]),
511 atomic_read(&failed[SMB2_CANCEL_HE]));
512 seq_printf(m, "\nEchos: %d sent %d failed",
513 atomic_read(&sent[SMB2_ECHO_HE]),
514 atomic_read(&failed[SMB2_ECHO_HE]));
515 seq_printf(m, "\nQueryDirectories: %d sent %d failed",
516 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
517 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
518 seq_printf(m, "\nChangeNotifies: %d sent %d failed",
519 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
520 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
521 seq_printf(m, "\nQueryInfos: %d sent %d failed",
522 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
523 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
524 seq_printf(m, "\nSetInfos: %d sent %d failed",
525 atomic_read(&sent[SMB2_SET_INFO_HE]),
526 atomic_read(&failed[SMB2_SET_INFO_HE]));
527 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
528 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
529 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
530#endif
531}
532
533static void
534smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
535{
536 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
537 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
538
539 cfile->fid.persistent_fid = fid->persistent_fid;
540 cfile->fid.volatile_fid = fid->volatile_fid;
541 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
542 &fid->purge_cache);
543 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
544}
545
546static void
547smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
548 struct cifs_fid *fid)
549{
550 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
551}
552
553static int
554SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
555 u64 persistent_fid, u64 volatile_fid,
556 struct copychunk_ioctl *pcchunk)
557{
558 int rc;
559 unsigned int ret_data_len;
560 struct resume_key_req *res_key;
561
562 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
563 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
564 NULL, 0 /* no input */,
565 (char **)&res_key, &ret_data_len);
566
567 if (rc) {
568 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
569 goto req_res_key_exit;
570 }
571 if (ret_data_len < sizeof(struct resume_key_req)) {
572 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
573 rc = -EINVAL;
574 goto req_res_key_exit;
575 }
576 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
577
578req_res_key_exit:
579 kfree(res_key);
580 return rc;
581}
582
583static int
584smb2_clone_range(const unsigned int xid,
585 struct cifsFileInfo *srcfile,
586 struct cifsFileInfo *trgtfile, u64 src_off,
587 u64 len, u64 dest_off)
588{
589 int rc;
590 unsigned int ret_data_len;
591 struct copychunk_ioctl *pcchunk;
592 struct copychunk_ioctl_rsp *retbuf = NULL;
593 struct cifs_tcon *tcon;
594 int chunks_copied = 0;
595 bool chunk_sizes_updated = false;
596
597 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
598
599 if (pcchunk == NULL)
600 return -ENOMEM;
601
602 cifs_dbg(FYI, "in smb2_clone_range - about to call request res key\n");
603 /* Request a key from the server to identify the source of the copy */
604 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
605 srcfile->fid.persistent_fid,
606 srcfile->fid.volatile_fid, pcchunk);
607
608 /* Note: request_res_key sets res_key null only if rc !=0 */
609 if (rc)
610 goto cchunk_out;
611
612 /* For now array only one chunk long, will make more flexible later */
613 pcchunk->ChunkCount = cpu_to_le32(1);
614 pcchunk->Reserved = 0;
615 pcchunk->Reserved2 = 0;
616
617 tcon = tlink_tcon(trgtfile->tlink);
618
619 while (len > 0) {
620 pcchunk->SourceOffset = cpu_to_le64(src_off);
621 pcchunk->TargetOffset = cpu_to_le64(dest_off);
622 pcchunk->Length =
623 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
624
625 /* Request server copy to target from src identified by key */
626 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
627 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
628 true /* is_fsctl */, (char *)pcchunk,
629 sizeof(struct copychunk_ioctl), (char **)&retbuf,
630 &ret_data_len);
631 if (rc == 0) {
632 if (ret_data_len !=
633 sizeof(struct copychunk_ioctl_rsp)) {
634 cifs_dbg(VFS, "invalid cchunk response size\n");
635 rc = -EIO;
636 goto cchunk_out;
637 }
638 if (retbuf->TotalBytesWritten == 0) {
639 cifs_dbg(FYI, "no bytes copied\n");
640 rc = -EIO;
641 goto cchunk_out;
642 }
643 /*
644 * Check if server claimed to write more than we asked
645 */
646 if (le32_to_cpu(retbuf->TotalBytesWritten) >
647 le32_to_cpu(pcchunk->Length)) {
648 cifs_dbg(VFS, "invalid copy chunk response\n");
649 rc = -EIO;
650 goto cchunk_out;
651 }
652 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
653 cifs_dbg(VFS, "invalid num chunks written\n");
654 rc = -EIO;
655 goto cchunk_out;
656 }
657 chunks_copied++;
658
659 src_off += le32_to_cpu(retbuf->TotalBytesWritten);
660 dest_off += le32_to_cpu(retbuf->TotalBytesWritten);
661 len -= le32_to_cpu(retbuf->TotalBytesWritten);
662
663 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %d\n",
664 le32_to_cpu(retbuf->ChunksWritten),
665 le32_to_cpu(retbuf->ChunkBytesWritten),
666 le32_to_cpu(retbuf->TotalBytesWritten));
667 } else if (rc == -EINVAL) {
668 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
669 goto cchunk_out;
670
671 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
672 le32_to_cpu(retbuf->ChunksWritten),
673 le32_to_cpu(retbuf->ChunkBytesWritten),
674 le32_to_cpu(retbuf->TotalBytesWritten));
675
676 /*
677 * Check if this is the first request using these sizes,
678 * (ie check if copy succeed once with original sizes
679 * and check if the server gave us different sizes after
680 * we already updated max sizes on previous request).
681 * if not then why is the server returning an error now
682 */
683 if ((chunks_copied != 0) || chunk_sizes_updated)
684 goto cchunk_out;
685
686 /* Check that server is not asking us to grow size */
687 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
688 tcon->max_bytes_chunk)
689 tcon->max_bytes_chunk =
690 le32_to_cpu(retbuf->ChunkBytesWritten);
691 else
692 goto cchunk_out; /* server gave us bogus size */
693
694 /* No need to change MaxChunks since already set to 1 */
695 chunk_sizes_updated = true;
696 } else
697 goto cchunk_out;
698 }
699
700cchunk_out:
701 kfree(pcchunk);
702 return rc;
703}
704
705static int
706smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
707 struct cifs_fid *fid)
708{
709 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
710}
711
712static unsigned int
713smb2_read_data_offset(char *buf)
714{
715 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
716 return rsp->DataOffset;
717}
718
719static unsigned int
720smb2_read_data_length(char *buf)
721{
722 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
723 return le32_to_cpu(rsp->DataLength);
724}
725
726
727static int
728smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
729 struct cifs_io_parms *parms, unsigned int *bytes_read,
730 char **buf, int *buf_type)
731{
732 parms->persistent_fid = pfid->persistent_fid;
733 parms->volatile_fid = pfid->volatile_fid;
734 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
735}
736
737static int
738smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
739 struct cifs_io_parms *parms, unsigned int *written,
740 struct kvec *iov, unsigned long nr_segs)
741{
742
743 parms->persistent_fid = pfid->persistent_fid;
744 parms->volatile_fid = pfid->volatile_fid;
745 return SMB2_write(xid, parms, written, iov, nr_segs);
746}
747
748/* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
749static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
750 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
751{
752 struct cifsInodeInfo *cifsi;
753 int rc;
754
755 cifsi = CIFS_I(inode);
756
757 /* if file already sparse don't bother setting sparse again */
758 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
759 return true; /* already sparse */
760
761 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
762 return true; /* already not sparse */
763
764 /*
765 * Can't check for sparse support on share the usual way via the
766 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
767 * since Samba server doesn't set the flag on the share, yet
768 * supports the set sparse FSCTL and returns sparse correctly
769 * in the file attributes. If we fail setting sparse though we
770 * mark that server does not support sparse files for this share
771 * to avoid repeatedly sending the unsupported fsctl to server
772 * if the file is repeatedly extended.
773 */
774 if (tcon->broken_sparse_sup)
775 return false;
776
777 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
778 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
779 true /* is_fctl */, &setsparse, 1, NULL, NULL);
780 if (rc) {
781 tcon->broken_sparse_sup = true;
782 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
783 return false;
784 }
785
786 if (setsparse)
787 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
788 else
789 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
790
791 return true;
792}
793
794static int
795smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
796 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
797{
798 __le64 eof = cpu_to_le64(size);
799 struct inode *inode;
800
801 /*
802 * If extending file more than one page make sparse. Many Linux fs
803 * make files sparse by default when extending via ftruncate
804 */
805 inode = d_inode(cfile->dentry);
806
807 if (!set_alloc && (size > inode->i_size + 8192)) {
808 __u8 set_sparse = 1;
809
810 /* whether set sparse succeeds or not, extend the file */
811 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
812 }
813
814 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
815 cfile->fid.volatile_fid, cfile->pid, &eof, false);
816}
817
818static int
819smb2_duplicate_extents(const unsigned int xid,
820 struct cifsFileInfo *srcfile,
821 struct cifsFileInfo *trgtfile, u64 src_off,
822 u64 len, u64 dest_off)
823{
824 int rc;
825 unsigned int ret_data_len;
826 char *retbuf = NULL;
827 struct duplicate_extents_to_file dup_ext_buf;
828 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
829
830 /* server fileays advertise duplicate extent support with this flag */
831 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
832 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
833 return -EOPNOTSUPP;
834
835 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
836 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
837 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
838 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
839 dup_ext_buf.ByteCount = cpu_to_le64(len);
840 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
841 src_off, dest_off, len);
842
843 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
844 if (rc)
845 goto duplicate_extents_out;
846
847 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
848 trgtfile->fid.volatile_fid,
849 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
850 true /* is_fsctl */, (char *)&dup_ext_buf,
851 sizeof(struct duplicate_extents_to_file),
852 (char **)&retbuf,
853 &ret_data_len);
854
855 if (ret_data_len > 0)
856 cifs_dbg(FYI, "non-zero response length in duplicate extents");
857
858duplicate_extents_out:
859 return rc;
860}
861
862static int
863smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
864 struct cifsFileInfo *cfile)
865{
866 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
867 cfile->fid.volatile_fid);
868}
869
870static int
871smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
872 struct cifsFileInfo *cfile)
873{
874 struct fsctl_set_integrity_information_req integr_info;
875 char *retbuf = NULL;
876 unsigned int ret_data_len;
877
878 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
879 integr_info.Flags = 0;
880 integr_info.Reserved = 0;
881
882 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
883 cfile->fid.volatile_fid,
884 FSCTL_SET_INTEGRITY_INFORMATION,
885 true /* is_fsctl */, (char *)&integr_info,
886 sizeof(struct fsctl_set_integrity_information_req),
887 (char **)&retbuf,
888 &ret_data_len);
889
890}
891
892static int
893smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
894 const char *path, struct cifs_sb_info *cifs_sb,
895 struct cifs_fid *fid, __u16 search_flags,
896 struct cifs_search_info *srch_inf)
897{
898 __le16 *utf16_path;
899 int rc;
900 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
901 struct cifs_open_parms oparms;
902
903 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
904 if (!utf16_path)
905 return -ENOMEM;
906
907 oparms.tcon = tcon;
908 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
909 oparms.disposition = FILE_OPEN;
910 oparms.create_options = 0;
911 oparms.fid = fid;
912 oparms.reconnect = false;
913
914 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
915 kfree(utf16_path);
916 if (rc) {
917 cifs_dbg(VFS, "open dir failed\n");
918 return rc;
919 }
920
921 srch_inf->entries_in_buffer = 0;
922 srch_inf->index_of_last_entry = 0;
923
924 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
925 fid->volatile_fid, 0, srch_inf);
926 if (rc) {
927 cifs_dbg(VFS, "query directory failed\n");
928 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
929 }
930 return rc;
931}
932
933static int
934smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
935 struct cifs_fid *fid, __u16 search_flags,
936 struct cifs_search_info *srch_inf)
937{
938 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
939 fid->volatile_fid, 0, srch_inf);
940}
941
942static int
943smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
944 struct cifs_fid *fid)
945{
946 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
947}
948
949/*
950* If we negotiate SMB2 protocol and get STATUS_PENDING - update
951* the number of credits and return true. Otherwise - return false.
952*/
953static bool
954smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
955{
956 struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
957
958 if (hdr->Status != STATUS_PENDING)
959 return false;
960
961 if (!length) {
962 spin_lock(&server->req_lock);
963 server->credits += le16_to_cpu(hdr->CreditRequest);
964 spin_unlock(&server->req_lock);
965 wake_up(&server->request_q);
966 }
967
968 return true;
969}
970
971static int
972smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
973 struct cifsInodeInfo *cinode)
974{
975 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
976 return SMB2_lease_break(0, tcon, cinode->lease_key,
977 smb2_get_lease_state(cinode));
978
979 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
980 fid->volatile_fid,
981 CIFS_CACHE_READ(cinode) ? 1 : 0);
982}
983
984static int
985smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
986 struct kstatfs *buf)
987{
988 int rc;
989 __le16 srch_path = 0; /* Null - open root of share */
990 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
991 struct cifs_open_parms oparms;
992 struct cifs_fid fid;
993
994 oparms.tcon = tcon;
995 oparms.desired_access = FILE_READ_ATTRIBUTES;
996 oparms.disposition = FILE_OPEN;
997 oparms.create_options = 0;
998 oparms.fid = &fid;
999 oparms.reconnect = false;
1000
1001 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
1002 if (rc)
1003 return rc;
1004 buf->f_type = SMB2_MAGIC_NUMBER;
1005 rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
1006 buf);
1007 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1008 return rc;
1009}
1010
1011static bool
1012smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
1013{
1014 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
1015 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
1016}
1017
1018static int
1019smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
1020 __u64 length, __u32 type, int lock, int unlock, bool wait)
1021{
1022 if (unlock && !lock)
1023 type = SMB2_LOCKFLAG_UNLOCK;
1024 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
1025 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
1026 current->tgid, length, offset, type, wait);
1027}
1028
1029static void
1030smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
1031{
1032 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
1033}
1034
1035static void
1036smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
1037{
1038 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
1039}
1040
1041static void
1042smb2_new_lease_key(struct cifs_fid *fid)
1043{
1044 get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE);
1045}
1046
1047static int
1048smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
1049 const char *full_path, char **target_path,
1050 struct cifs_sb_info *cifs_sb)
1051{
1052 int rc;
1053 __le16 *utf16_path;
1054 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1055 struct cifs_open_parms oparms;
1056 struct cifs_fid fid;
1057 struct smb2_err_rsp *err_buf = NULL;
1058 struct smb2_symlink_err_rsp *symlink;
1059 unsigned int sub_len, sub_offset;
1060
1061 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
1062
1063 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
1064 if (!utf16_path)
1065 return -ENOMEM;
1066
1067 oparms.tcon = tcon;
1068 oparms.desired_access = FILE_READ_ATTRIBUTES;
1069 oparms.disposition = FILE_OPEN;
1070 oparms.create_options = 0;
1071 oparms.fid = &fid;
1072 oparms.reconnect = false;
1073
1074 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf);
1075
1076 if (!rc || !err_buf) {
1077 kfree(utf16_path);
1078 return -ENOENT;
1079 }
1080 /* open must fail on symlink - reset rc */
1081 rc = 0;
1082 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
1083 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
1084 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
1085 *target_path = cifs_strndup_from_utf16(
1086 (char *)symlink->PathBuffer + sub_offset,
1087 sub_len, true, cifs_sb->local_nls);
1088 if (!(*target_path)) {
1089 kfree(utf16_path);
1090 return -ENOMEM;
1091 }
1092 convert_delimiter(*target_path, '/');
1093 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
1094 kfree(utf16_path);
1095 return rc;
1096}
1097
1098static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
1099 loff_t offset, loff_t len, bool keep_size)
1100{
1101 struct inode *inode;
1102 struct cifsInodeInfo *cifsi;
1103 struct cifsFileInfo *cfile = file->private_data;
1104 struct file_zero_data_information fsctl_buf;
1105 long rc;
1106 unsigned int xid;
1107
1108 xid = get_xid();
1109
1110 inode = d_inode(cfile->dentry);
1111 cifsi = CIFS_I(inode);
1112
1113 /* if file not oplocked can't be sure whether asking to extend size */
1114 if (!CIFS_CACHE_READ(cifsi))
1115 if (keep_size == false)
1116 return -EOPNOTSUPP;
1117
1118 /*
1119 * Must check if file sparse since fallocate -z (zero range) assumes
1120 * non-sparse allocation
1121 */
1122 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE))
1123 return -EOPNOTSUPP;
1124
1125 /*
1126 * need to make sure we are not asked to extend the file since the SMB3
1127 * fsctl does not change the file size. In the future we could change
1128 * this to zero the first part of the range then set the file size
1129 * which for a non sparse file would zero the newly extended range
1130 */
1131 if (keep_size == false)
1132 if (i_size_read(inode) < offset + len)
1133 return -EOPNOTSUPP;
1134
1135 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1136
1137 fsctl_buf.FileOffset = cpu_to_le64(offset);
1138 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1139
1140 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1141 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
1142 true /* is_fctl */, (char *)&fsctl_buf,
1143 sizeof(struct file_zero_data_information), NULL, NULL);
1144 free_xid(xid);
1145 return rc;
1146}
1147
1148static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
1149 loff_t offset, loff_t len)
1150{
1151 struct inode *inode;
1152 struct cifsInodeInfo *cifsi;
1153 struct cifsFileInfo *cfile = file->private_data;
1154 struct file_zero_data_information fsctl_buf;
1155 long rc;
1156 unsigned int xid;
1157 __u8 set_sparse = 1;
1158
1159 xid = get_xid();
1160
1161 inode = d_inode(cfile->dentry);
1162 cifsi = CIFS_I(inode);
1163
1164 /* Need to make file sparse, if not already, before freeing range. */
1165 /* Consider adding equivalent for compressed since it could also work */
1166 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse))
1167 return -EOPNOTSUPP;
1168
1169 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1170
1171 fsctl_buf.FileOffset = cpu_to_le64(offset);
1172 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1173
1174 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1175 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
1176 true /* is_fctl */, (char *)&fsctl_buf,
1177 sizeof(struct file_zero_data_information), NULL, NULL);
1178 free_xid(xid);
1179 return rc;
1180}
1181
1182static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
1183 loff_t off, loff_t len, bool keep_size)
1184{
1185 struct inode *inode;
1186 struct cifsInodeInfo *cifsi;
1187 struct cifsFileInfo *cfile = file->private_data;
1188 long rc = -EOPNOTSUPP;
1189 unsigned int xid;
1190
1191 xid = get_xid();
1192
1193 inode = d_inode(cfile->dentry);
1194 cifsi = CIFS_I(inode);
1195
1196 /* if file not oplocked can't be sure whether asking to extend size */
1197 if (!CIFS_CACHE_READ(cifsi))
1198 if (keep_size == false)
1199 return -EOPNOTSUPP;
1200
1201 /*
1202 * Files are non-sparse by default so falloc may be a no-op
1203 * Must check if file sparse. If not sparse, and not extending
1204 * then no need to do anything since file already allocated
1205 */
1206 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
1207 if (keep_size == true)
1208 return 0;
1209 /* check if extending file */
1210 else if (i_size_read(inode) >= off + len)
1211 /* not extending file and already not sparse */
1212 return 0;
1213 /* BB: in future add else clause to extend file */
1214 else
1215 return -EOPNOTSUPP;
1216 }
1217
1218 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
1219 /*
1220 * Check if falloc starts within first few pages of file
1221 * and ends within a few pages of the end of file to
1222 * ensure that most of file is being forced to be
1223 * fallocated now. If so then setting whole file sparse
1224 * ie potentially making a few extra pages at the beginning
1225 * or end of the file non-sparse via set_sparse is harmless.
1226 */
1227 if ((off > 8192) || (off + len + 8192 < i_size_read(inode)))
1228 return -EOPNOTSUPP;
1229
1230 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
1231 }
1232 /* BB: else ... in future add code to extend file and set sparse */
1233
1234
1235 free_xid(xid);
1236 return rc;
1237}
1238
1239
1240static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
1241 loff_t off, loff_t len)
1242{
1243 /* KEEP_SIZE already checked for by do_fallocate */
1244 if (mode & FALLOC_FL_PUNCH_HOLE)
1245 return smb3_punch_hole(file, tcon, off, len);
1246 else if (mode & FALLOC_FL_ZERO_RANGE) {
1247 if (mode & FALLOC_FL_KEEP_SIZE)
1248 return smb3_zero_range(file, tcon, off, len, true);
1249 return smb3_zero_range(file, tcon, off, len, false);
1250 } else if (mode == FALLOC_FL_KEEP_SIZE)
1251 return smb3_simple_falloc(file, tcon, off, len, true);
1252 else if (mode == 0)
1253 return smb3_simple_falloc(file, tcon, off, len, false);
1254
1255 return -EOPNOTSUPP;
1256}
1257
1258static void
1259smb2_downgrade_oplock(struct TCP_Server_Info *server,
1260 struct cifsInodeInfo *cinode, bool set_level2)
1261{
1262 if (set_level2)
1263 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
1264 0, NULL);
1265 else
1266 server->ops->set_oplock_level(cinode, 0, 0, NULL);
1267}
1268
1269static void
1270smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1271 unsigned int epoch, bool *purge_cache)
1272{
1273 oplock &= 0xFF;
1274 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1275 return;
1276 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
1277 cinode->oplock = CIFS_CACHE_RHW_FLG;
1278 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
1279 &cinode->vfs_inode);
1280 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
1281 cinode->oplock = CIFS_CACHE_RW_FLG;
1282 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
1283 &cinode->vfs_inode);
1284 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
1285 cinode->oplock = CIFS_CACHE_READ_FLG;
1286 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
1287 &cinode->vfs_inode);
1288 } else
1289 cinode->oplock = 0;
1290}
1291
1292static void
1293smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1294 unsigned int epoch, bool *purge_cache)
1295{
1296 char message[5] = {0};
1297
1298 oplock &= 0xFF;
1299 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1300 return;
1301
1302 cinode->oplock = 0;
1303 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
1304 cinode->oplock |= CIFS_CACHE_READ_FLG;
1305 strcat(message, "R");
1306 }
1307 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
1308 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
1309 strcat(message, "H");
1310 }
1311 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
1312 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
1313 strcat(message, "W");
1314 }
1315 if (!cinode->oplock)
1316 strcat(message, "None");
1317 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
1318 &cinode->vfs_inode);
1319}
1320
1321static void
1322smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1323 unsigned int epoch, bool *purge_cache)
1324{
1325 unsigned int old_oplock = cinode->oplock;
1326
1327 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
1328
1329 if (purge_cache) {
1330 *purge_cache = false;
1331 if (old_oplock == CIFS_CACHE_READ_FLG) {
1332 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
1333 (epoch - cinode->epoch > 0))
1334 *purge_cache = true;
1335 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1336 (epoch - cinode->epoch > 1))
1337 *purge_cache = true;
1338 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1339 (epoch - cinode->epoch > 1))
1340 *purge_cache = true;
1341 else if (cinode->oplock == 0 &&
1342 (epoch - cinode->epoch > 0))
1343 *purge_cache = true;
1344 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
1345 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1346 (epoch - cinode->epoch > 0))
1347 *purge_cache = true;
1348 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1349 (epoch - cinode->epoch > 1))
1350 *purge_cache = true;
1351 }
1352 cinode->epoch = epoch;
1353 }
1354}
1355
1356static bool
1357smb2_is_read_op(__u32 oplock)
1358{
1359 return oplock == SMB2_OPLOCK_LEVEL_II;
1360}
1361
1362static bool
1363smb21_is_read_op(__u32 oplock)
1364{
1365 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
1366 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
1367}
1368
1369static __le32
1370map_oplock_to_lease(u8 oplock)
1371{
1372 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
1373 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
1374 else if (oplock == SMB2_OPLOCK_LEVEL_II)
1375 return SMB2_LEASE_READ_CACHING;
1376 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
1377 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
1378 SMB2_LEASE_WRITE_CACHING;
1379 return 0;
1380}
1381
1382static char *
1383smb2_create_lease_buf(u8 *lease_key, u8 oplock)
1384{
1385 struct create_lease *buf;
1386
1387 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
1388 if (!buf)
1389 return NULL;
1390
1391 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1392 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
1393 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
1394
1395 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1396 (struct create_lease, lcontext));
1397 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
1398 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1399 (struct create_lease, Name));
1400 buf->ccontext.NameLength = cpu_to_le16(4);
1401 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
1402 buf->Name[0] = 'R';
1403 buf->Name[1] = 'q';
1404 buf->Name[2] = 'L';
1405 buf->Name[3] = 's';
1406 return (char *)buf;
1407}
1408
1409static char *
1410smb3_create_lease_buf(u8 *lease_key, u8 oplock)
1411{
1412 struct create_lease_v2 *buf;
1413
1414 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
1415 if (!buf)
1416 return NULL;
1417
1418 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1419 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
1420 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
1421
1422 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1423 (struct create_lease_v2, lcontext));
1424 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
1425 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1426 (struct create_lease_v2, Name));
1427 buf->ccontext.NameLength = cpu_to_le16(4);
1428 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
1429 buf->Name[0] = 'R';
1430 buf->Name[1] = 'q';
1431 buf->Name[2] = 'L';
1432 buf->Name[3] = 's';
1433 return (char *)buf;
1434}
1435
1436static __u8
1437smb2_parse_lease_buf(void *buf, unsigned int *epoch)
1438{
1439 struct create_lease *lc = (struct create_lease *)buf;
1440
1441 *epoch = 0; /* not used */
1442 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1443 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1444 return le32_to_cpu(lc->lcontext.LeaseState);
1445}
1446
1447static __u8
1448smb3_parse_lease_buf(void *buf, unsigned int *epoch)
1449{
1450 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
1451
1452 *epoch = le16_to_cpu(lc->lcontext.Epoch);
1453 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1454 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1455 return le32_to_cpu(lc->lcontext.LeaseState);
1456}
1457
1458static unsigned int
1459smb2_wp_retry_size(struct inode *inode)
1460{
1461 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
1462 SMB2_MAX_BUFFER_SIZE);
1463}
1464
1465static bool
1466smb2_dir_needs_close(struct cifsFileInfo *cfile)
1467{
1468 return !cfile->invalidHandle;
1469}
1470
1471struct smb_version_operations smb20_operations = {
1472 .compare_fids = smb2_compare_fids,
1473 .setup_request = smb2_setup_request,
1474 .setup_async_request = smb2_setup_async_request,
1475 .check_receive = smb2_check_receive,
1476 .add_credits = smb2_add_credits,
1477 .set_credits = smb2_set_credits,
1478 .get_credits_field = smb2_get_credits_field,
1479 .get_credits = smb2_get_credits,
1480 .wait_mtu_credits = cifs_wait_mtu_credits,
1481 .get_next_mid = smb2_get_next_mid,
1482 .read_data_offset = smb2_read_data_offset,
1483 .read_data_length = smb2_read_data_length,
1484 .map_error = map_smb2_to_linux_error,
1485 .find_mid = smb2_find_mid,
1486 .check_message = smb2_check_message,
1487 .dump_detail = smb2_dump_detail,
1488 .clear_stats = smb2_clear_stats,
1489 .print_stats = smb2_print_stats,
1490 .is_oplock_break = smb2_is_valid_oplock_break,
1491 .downgrade_oplock = smb2_downgrade_oplock,
1492 .need_neg = smb2_need_neg,
1493 .negotiate = smb2_negotiate,
1494 .negotiate_wsize = smb2_negotiate_wsize,
1495 .negotiate_rsize = smb2_negotiate_rsize,
1496 .sess_setup = SMB2_sess_setup,
1497 .logoff = SMB2_logoff,
1498 .tree_connect = SMB2_tcon,
1499 .tree_disconnect = SMB2_tdis,
1500 .qfs_tcon = smb2_qfs_tcon,
1501 .is_path_accessible = smb2_is_path_accessible,
1502 .can_echo = smb2_can_echo,
1503 .echo = SMB2_echo,
1504 .query_path_info = smb2_query_path_info,
1505 .get_srv_inum = smb2_get_srv_inum,
1506 .query_file_info = smb2_query_file_info,
1507 .set_path_size = smb2_set_path_size,
1508 .set_file_size = smb2_set_file_size,
1509 .set_file_info = smb2_set_file_info,
1510 .set_compression = smb2_set_compression,
1511 .mkdir = smb2_mkdir,
1512 .mkdir_setinfo = smb2_mkdir_setinfo,
1513 .rmdir = smb2_rmdir,
1514 .unlink = smb2_unlink,
1515 .rename = smb2_rename_path,
1516 .create_hardlink = smb2_create_hardlink,
1517 .query_symlink = smb2_query_symlink,
1518 .open = smb2_open_file,
1519 .set_fid = smb2_set_fid,
1520 .close = smb2_close_file,
1521 .flush = smb2_flush_file,
1522 .async_readv = smb2_async_readv,
1523 .async_writev = smb2_async_writev,
1524 .sync_read = smb2_sync_read,
1525 .sync_write = smb2_sync_write,
1526 .query_dir_first = smb2_query_dir_first,
1527 .query_dir_next = smb2_query_dir_next,
1528 .close_dir = smb2_close_dir,
1529 .calc_smb_size = smb2_calc_size,
1530 .is_status_pending = smb2_is_status_pending,
1531 .oplock_response = smb2_oplock_response,
1532 .queryfs = smb2_queryfs,
1533 .mand_lock = smb2_mand_lock,
1534 .mand_unlock_range = smb2_unlock_range,
1535 .push_mand_locks = smb2_push_mandatory_locks,
1536 .get_lease_key = smb2_get_lease_key,
1537 .set_lease_key = smb2_set_lease_key,
1538 .new_lease_key = smb2_new_lease_key,
1539 .calc_signature = smb2_calc_signature,
1540 .is_read_op = smb2_is_read_op,
1541 .set_oplock_level = smb2_set_oplock_level,
1542 .create_lease_buf = smb2_create_lease_buf,
1543 .parse_lease_buf = smb2_parse_lease_buf,
1544 .clone_range = smb2_clone_range,
1545 .wp_retry_size = smb2_wp_retry_size,
1546 .dir_needs_close = smb2_dir_needs_close,
1547};
1548
1549struct smb_version_operations smb21_operations = {
1550 .compare_fids = smb2_compare_fids,
1551 .setup_request = smb2_setup_request,
1552 .setup_async_request = smb2_setup_async_request,
1553 .check_receive = smb2_check_receive,
1554 .add_credits = smb2_add_credits,
1555 .set_credits = smb2_set_credits,
1556 .get_credits_field = smb2_get_credits_field,
1557 .get_credits = smb2_get_credits,
1558 .wait_mtu_credits = smb2_wait_mtu_credits,
1559 .get_next_mid = smb2_get_next_mid,
1560 .read_data_offset = smb2_read_data_offset,
1561 .read_data_length = smb2_read_data_length,
1562 .map_error = map_smb2_to_linux_error,
1563 .find_mid = smb2_find_mid,
1564 .check_message = smb2_check_message,
1565 .dump_detail = smb2_dump_detail,
1566 .clear_stats = smb2_clear_stats,
1567 .print_stats = smb2_print_stats,
1568 .is_oplock_break = smb2_is_valid_oplock_break,
1569 .downgrade_oplock = smb2_downgrade_oplock,
1570 .need_neg = smb2_need_neg,
1571 .negotiate = smb2_negotiate,
1572 .negotiate_wsize = smb2_negotiate_wsize,
1573 .negotiate_rsize = smb2_negotiate_rsize,
1574 .sess_setup = SMB2_sess_setup,
1575 .logoff = SMB2_logoff,
1576 .tree_connect = SMB2_tcon,
1577 .tree_disconnect = SMB2_tdis,
1578 .qfs_tcon = smb2_qfs_tcon,
1579 .is_path_accessible = smb2_is_path_accessible,
1580 .can_echo = smb2_can_echo,
1581 .echo = SMB2_echo,
1582 .query_path_info = smb2_query_path_info,
1583 .get_srv_inum = smb2_get_srv_inum,
1584 .query_file_info = smb2_query_file_info,
1585 .set_path_size = smb2_set_path_size,
1586 .set_file_size = smb2_set_file_size,
1587 .set_file_info = smb2_set_file_info,
1588 .set_compression = smb2_set_compression,
1589 .mkdir = smb2_mkdir,
1590 .mkdir_setinfo = smb2_mkdir_setinfo,
1591 .rmdir = smb2_rmdir,
1592 .unlink = smb2_unlink,
1593 .rename = smb2_rename_path,
1594 .create_hardlink = smb2_create_hardlink,
1595 .query_symlink = smb2_query_symlink,
1596 .query_mf_symlink = smb3_query_mf_symlink,
1597 .create_mf_symlink = smb3_create_mf_symlink,
1598 .open = smb2_open_file,
1599 .set_fid = smb2_set_fid,
1600 .close = smb2_close_file,
1601 .flush = smb2_flush_file,
1602 .async_readv = smb2_async_readv,
1603 .async_writev = smb2_async_writev,
1604 .sync_read = smb2_sync_read,
1605 .sync_write = smb2_sync_write,
1606 .query_dir_first = smb2_query_dir_first,
1607 .query_dir_next = smb2_query_dir_next,
1608 .close_dir = smb2_close_dir,
1609 .calc_smb_size = smb2_calc_size,
1610 .is_status_pending = smb2_is_status_pending,
1611 .oplock_response = smb2_oplock_response,
1612 .queryfs = smb2_queryfs,
1613 .mand_lock = smb2_mand_lock,
1614 .mand_unlock_range = smb2_unlock_range,
1615 .push_mand_locks = smb2_push_mandatory_locks,
1616 .get_lease_key = smb2_get_lease_key,
1617 .set_lease_key = smb2_set_lease_key,
1618 .new_lease_key = smb2_new_lease_key,
1619 .calc_signature = smb2_calc_signature,
1620 .is_read_op = smb21_is_read_op,
1621 .set_oplock_level = smb21_set_oplock_level,
1622 .create_lease_buf = smb2_create_lease_buf,
1623 .parse_lease_buf = smb2_parse_lease_buf,
1624 .clone_range = smb2_clone_range,
1625 .wp_retry_size = smb2_wp_retry_size,
1626 .dir_needs_close = smb2_dir_needs_close,
1627};
1628
1629struct smb_version_operations smb30_operations = {
1630 .compare_fids = smb2_compare_fids,
1631 .setup_request = smb2_setup_request,
1632 .setup_async_request = smb2_setup_async_request,
1633 .check_receive = smb2_check_receive,
1634 .add_credits = smb2_add_credits,
1635 .set_credits = smb2_set_credits,
1636 .get_credits_field = smb2_get_credits_field,
1637 .get_credits = smb2_get_credits,
1638 .wait_mtu_credits = smb2_wait_mtu_credits,
1639 .get_next_mid = smb2_get_next_mid,
1640 .read_data_offset = smb2_read_data_offset,
1641 .read_data_length = smb2_read_data_length,
1642 .map_error = map_smb2_to_linux_error,
1643 .find_mid = smb2_find_mid,
1644 .check_message = smb2_check_message,
1645 .dump_detail = smb2_dump_detail,
1646 .clear_stats = smb2_clear_stats,
1647 .print_stats = smb2_print_stats,
1648 .dump_share_caps = smb2_dump_share_caps,
1649 .is_oplock_break = smb2_is_valid_oplock_break,
1650 .downgrade_oplock = smb2_downgrade_oplock,
1651 .need_neg = smb2_need_neg,
1652 .negotiate = smb2_negotiate,
1653 .negotiate_wsize = smb2_negotiate_wsize,
1654 .negotiate_rsize = smb2_negotiate_rsize,
1655 .sess_setup = SMB2_sess_setup,
1656 .logoff = SMB2_logoff,
1657 .tree_connect = SMB2_tcon,
1658 .tree_disconnect = SMB2_tdis,
1659 .qfs_tcon = smb3_qfs_tcon,
1660 .is_path_accessible = smb2_is_path_accessible,
1661 .can_echo = smb2_can_echo,
1662 .echo = SMB2_echo,
1663 .query_path_info = smb2_query_path_info,
1664 .get_srv_inum = smb2_get_srv_inum,
1665 .query_file_info = smb2_query_file_info,
1666 .set_path_size = smb2_set_path_size,
1667 .set_file_size = smb2_set_file_size,
1668 .set_file_info = smb2_set_file_info,
1669 .set_compression = smb2_set_compression,
1670 .mkdir = smb2_mkdir,
1671 .mkdir_setinfo = smb2_mkdir_setinfo,
1672 .rmdir = smb2_rmdir,
1673 .unlink = smb2_unlink,
1674 .rename = smb2_rename_path,
1675 .create_hardlink = smb2_create_hardlink,
1676 .query_symlink = smb2_query_symlink,
1677 .query_mf_symlink = smb3_query_mf_symlink,
1678 .create_mf_symlink = smb3_create_mf_symlink,
1679 .open = smb2_open_file,
1680 .set_fid = smb2_set_fid,
1681 .close = smb2_close_file,
1682 .flush = smb2_flush_file,
1683 .async_readv = smb2_async_readv,
1684 .async_writev = smb2_async_writev,
1685 .sync_read = smb2_sync_read,
1686 .sync_write = smb2_sync_write,
1687 .query_dir_first = smb2_query_dir_first,
1688 .query_dir_next = smb2_query_dir_next,
1689 .close_dir = smb2_close_dir,
1690 .calc_smb_size = smb2_calc_size,
1691 .is_status_pending = smb2_is_status_pending,
1692 .oplock_response = smb2_oplock_response,
1693 .queryfs = smb2_queryfs,
1694 .mand_lock = smb2_mand_lock,
1695 .mand_unlock_range = smb2_unlock_range,
1696 .push_mand_locks = smb2_push_mandatory_locks,
1697 .get_lease_key = smb2_get_lease_key,
1698 .set_lease_key = smb2_set_lease_key,
1699 .new_lease_key = smb2_new_lease_key,
1700 .generate_signingkey = generate_smb30signingkey,
1701 .calc_signature = smb3_calc_signature,
1702 .set_integrity = smb3_set_integrity,
1703 .is_read_op = smb21_is_read_op,
1704 .set_oplock_level = smb3_set_oplock_level,
1705 .create_lease_buf = smb3_create_lease_buf,
1706 .parse_lease_buf = smb3_parse_lease_buf,
1707 .clone_range = smb2_clone_range,
1708 .duplicate_extents = smb2_duplicate_extents,
1709 .validate_negotiate = smb3_validate_negotiate,
1710 .wp_retry_size = smb2_wp_retry_size,
1711 .dir_needs_close = smb2_dir_needs_close,
1712 .fallocate = smb3_fallocate,
1713};
1714
1715#ifdef CONFIG_CIFS_SMB311
1716struct smb_version_operations smb311_operations = {
1717 .compare_fids = smb2_compare_fids,
1718 .setup_request = smb2_setup_request,
1719 .setup_async_request = smb2_setup_async_request,
1720 .check_receive = smb2_check_receive,
1721 .add_credits = smb2_add_credits,
1722 .set_credits = smb2_set_credits,
1723 .get_credits_field = smb2_get_credits_field,
1724 .get_credits = smb2_get_credits,
1725 .wait_mtu_credits = smb2_wait_mtu_credits,
1726 .get_next_mid = smb2_get_next_mid,
1727 .read_data_offset = smb2_read_data_offset,
1728 .read_data_length = smb2_read_data_length,
1729 .map_error = map_smb2_to_linux_error,
1730 .find_mid = smb2_find_mid,
1731 .check_message = smb2_check_message,
1732 .dump_detail = smb2_dump_detail,
1733 .clear_stats = smb2_clear_stats,
1734 .print_stats = smb2_print_stats,
1735 .dump_share_caps = smb2_dump_share_caps,
1736 .is_oplock_break = smb2_is_valid_oplock_break,
1737 .downgrade_oplock = smb2_downgrade_oplock,
1738 .need_neg = smb2_need_neg,
1739 .negotiate = smb2_negotiate,
1740 .negotiate_wsize = smb2_negotiate_wsize,
1741 .negotiate_rsize = smb2_negotiate_rsize,
1742 .sess_setup = SMB2_sess_setup,
1743 .logoff = SMB2_logoff,
1744 .tree_connect = SMB2_tcon,
1745 .tree_disconnect = SMB2_tdis,
1746 .qfs_tcon = smb3_qfs_tcon,
1747 .is_path_accessible = smb2_is_path_accessible,
1748 .can_echo = smb2_can_echo,
1749 .echo = SMB2_echo,
1750 .query_path_info = smb2_query_path_info,
1751 .get_srv_inum = smb2_get_srv_inum,
1752 .query_file_info = smb2_query_file_info,
1753 .set_path_size = smb2_set_path_size,
1754 .set_file_size = smb2_set_file_size,
1755 .set_file_info = smb2_set_file_info,
1756 .set_compression = smb2_set_compression,
1757 .mkdir = smb2_mkdir,
1758 .mkdir_setinfo = smb2_mkdir_setinfo,
1759 .rmdir = smb2_rmdir,
1760 .unlink = smb2_unlink,
1761 .rename = smb2_rename_path,
1762 .create_hardlink = smb2_create_hardlink,
1763 .query_symlink = smb2_query_symlink,
1764 .query_mf_symlink = smb3_query_mf_symlink,
1765 .create_mf_symlink = smb3_create_mf_symlink,
1766 .open = smb2_open_file,
1767 .set_fid = smb2_set_fid,
1768 .close = smb2_close_file,
1769 .flush = smb2_flush_file,
1770 .async_readv = smb2_async_readv,
1771 .async_writev = smb2_async_writev,
1772 .sync_read = smb2_sync_read,
1773 .sync_write = smb2_sync_write,
1774 .query_dir_first = smb2_query_dir_first,
1775 .query_dir_next = smb2_query_dir_next,
1776 .close_dir = smb2_close_dir,
1777 .calc_smb_size = smb2_calc_size,
1778 .is_status_pending = smb2_is_status_pending,
1779 .oplock_response = smb2_oplock_response,
1780 .queryfs = smb2_queryfs,
1781 .mand_lock = smb2_mand_lock,
1782 .mand_unlock_range = smb2_unlock_range,
1783 .push_mand_locks = smb2_push_mandatory_locks,
1784 .get_lease_key = smb2_get_lease_key,
1785 .set_lease_key = smb2_set_lease_key,
1786 .new_lease_key = smb2_new_lease_key,
1787 .generate_signingkey = generate_smb311signingkey,
1788 .calc_signature = smb3_calc_signature,
1789 .set_integrity = smb3_set_integrity,
1790 .is_read_op = smb21_is_read_op,
1791 .set_oplock_level = smb3_set_oplock_level,
1792 .create_lease_buf = smb3_create_lease_buf,
1793 .parse_lease_buf = smb3_parse_lease_buf,
1794 .clone_range = smb2_clone_range,
1795 .duplicate_extents = smb2_duplicate_extents,
1796/* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
1797 .wp_retry_size = smb2_wp_retry_size,
1798 .dir_needs_close = smb2_dir_needs_close,
1799 .fallocate = smb3_fallocate,
1800};
1801#endif /* CIFS_SMB311 */
1802
1803struct smb_version_values smb20_values = {
1804 .version_string = SMB20_VERSION_STRING,
1805 .protocol_id = SMB20_PROT_ID,
1806 .req_capabilities = 0, /* MBZ */
1807 .large_lock_type = 0,
1808 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1809 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1810 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1811 .header_size = sizeof(struct smb2_hdr),
1812 .max_header_size = MAX_SMB2_HDR_SIZE,
1813 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1814 .lock_cmd = SMB2_LOCK,
1815 .cap_unix = 0,
1816 .cap_nt_find = SMB2_NT_FIND,
1817 .cap_large_files = SMB2_LARGE_FILES,
1818 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1819 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1820 .create_lease_size = sizeof(struct create_lease),
1821};
1822
1823struct smb_version_values smb21_values = {
1824 .version_string = SMB21_VERSION_STRING,
1825 .protocol_id = SMB21_PROT_ID,
1826 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
1827 .large_lock_type = 0,
1828 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1829 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1830 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1831 .header_size = sizeof(struct smb2_hdr),
1832 .max_header_size = MAX_SMB2_HDR_SIZE,
1833 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1834 .lock_cmd = SMB2_LOCK,
1835 .cap_unix = 0,
1836 .cap_nt_find = SMB2_NT_FIND,
1837 .cap_large_files = SMB2_LARGE_FILES,
1838 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1839 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1840 .create_lease_size = sizeof(struct create_lease),
1841};
1842
1843struct smb_version_values smb30_values = {
1844 .version_string = SMB30_VERSION_STRING,
1845 .protocol_id = SMB30_PROT_ID,
1846 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
1847 .large_lock_type = 0,
1848 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1849 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1850 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1851 .header_size = sizeof(struct smb2_hdr),
1852 .max_header_size = MAX_SMB2_HDR_SIZE,
1853 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1854 .lock_cmd = SMB2_LOCK,
1855 .cap_unix = 0,
1856 .cap_nt_find = SMB2_NT_FIND,
1857 .cap_large_files = SMB2_LARGE_FILES,
1858 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1859 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1860 .create_lease_size = sizeof(struct create_lease_v2),
1861};
1862
1863struct smb_version_values smb302_values = {
1864 .version_string = SMB302_VERSION_STRING,
1865 .protocol_id = SMB302_PROT_ID,
1866 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
1867 .large_lock_type = 0,
1868 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1869 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1870 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1871 .header_size = sizeof(struct smb2_hdr),
1872 .max_header_size = MAX_SMB2_HDR_SIZE,
1873 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1874 .lock_cmd = SMB2_LOCK,
1875 .cap_unix = 0,
1876 .cap_nt_find = SMB2_NT_FIND,
1877 .cap_large_files = SMB2_LARGE_FILES,
1878 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1879 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1880 .create_lease_size = sizeof(struct create_lease_v2),
1881};
1882
1883#ifdef CONFIG_CIFS_SMB311
1884struct smb_version_values smb311_values = {
1885 .version_string = SMB311_VERSION_STRING,
1886 .protocol_id = SMB311_PROT_ID,
1887 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES,
1888 .large_lock_type = 0,
1889 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1890 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1891 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1892 .header_size = sizeof(struct smb2_hdr),
1893 .max_header_size = MAX_SMB2_HDR_SIZE,
1894 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1895 .lock_cmd = SMB2_LOCK,
1896 .cap_unix = 0,
1897 .cap_nt_find = SMB2_NT_FIND,
1898 .cap_large_files = SMB2_LARGE_FILES,
1899 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1900 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1901 .create_lease_size = sizeof(struct create_lease_v2),
1902};
1903#endif /* SMB311 */