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locking/refcounts: Include fewer headers in <linux/refcount.h>
[linux/fpc-iii.git] / fs / cifs / smb2ops.c
blob0356b5559c711ffa20d2710425b823106b0a0dc5
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 <linux/scatterlist.h>
24 #include <linux/uuid.h>
25 #include <crypto/aead.h>
26 #include "cifsglob.h"
27 #include "smb2pdu.h"
28 #include "smb2proto.h"
29 #include "cifsproto.h"
30 #include "cifs_debug.h"
31 #include "cifs_unicode.h"
32 #include "smb2status.h"
33 #include "smb2glob.h"
34 #include "cifs_ioctl.h"
35 #include "smbdirect.h"
36
37 static int
38 change_conf(struct TCP_Server_Info *server)
39 {
40 server->credits += server->echo_credits + server->oplock_credits;
41 server->oplock_credits = server->echo_credits = 0;
42 switch (server->credits) {
43 case 0:
44 return -1;
45 case 1:
46 server->echoes = false;
47 server->oplocks = false;
48 cifs_dbg(VFS, "disabling echoes and oplocks\n");
49 break;
50 case 2:
51 server->echoes = true;
52 server->oplocks = false;
53 server->echo_credits = 1;
54 cifs_dbg(FYI, "disabling oplocks\n");
55 break;
56 default:
57 server->echoes = true;
58 if (enable_oplocks) {
59 server->oplocks = true;
60 server->oplock_credits = 1;
61 } else
62 server->oplocks = false;
63
64 server->echo_credits = 1;
65 }
66 server->credits -= server->echo_credits + server->oplock_credits;
67 return 0;
68 }
69
70 static void
71 smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
72 const int optype)
73 {
74 int *val, rc = 0;
75 spin_lock(&server->req_lock);
76 val = server->ops->get_credits_field(server, optype);
77 *val += add;
78 if (*val > 65000) {
79 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
80 printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
81 }
82 server->in_flight--;
83 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
84 rc = change_conf(server);
85 /*
86 * Sometimes server returns 0 credits on oplock break ack - we need to
87 * rebalance credits in this case.
88 */
89 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
90 server->oplocks) {
91 if (server->credits > 1) {
92 server->credits--;
93 server->oplock_credits++;
94 }
95 }
96 spin_unlock(&server->req_lock);
97 wake_up(&server->request_q);
98 if (rc)
99 cifs_reconnect(server);
100 }
101
102 static void
103 smb2_set_credits(struct TCP_Server_Info *server, const int val)
104 {
105 spin_lock(&server->req_lock);
106 server->credits = val;
107 spin_unlock(&server->req_lock);
108 }
109
110 static int *
111 smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
112 {
113 switch (optype) {
114 case CIFS_ECHO_OP:
115 return &server->echo_credits;
116 case CIFS_OBREAK_OP:
117 return &server->oplock_credits;
118 default:
119 return &server->credits;
120 }
121 }
122
123 static unsigned int
124 smb2_get_credits(struct mid_q_entry *mid)
125 {
126 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)mid->resp_buf;
127
128 return le16_to_cpu(shdr->CreditRequest);
129 }
130
131 static int
132 smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
133 unsigned int *num, unsigned int *credits)
134 {
135 int rc = 0;
136 unsigned int scredits;
137
138 spin_lock(&server->req_lock);
139 while (1) {
140 if (server->credits <= 0) {
141 spin_unlock(&server->req_lock);
142 cifs_num_waiters_inc(server);
143 rc = wait_event_killable(server->request_q,
144 has_credits(server, &server->credits));
145 cifs_num_waiters_dec(server);
146 if (rc)
147 return rc;
148 spin_lock(&server->req_lock);
149 } else {
150 if (server->tcpStatus == CifsExiting) {
151 spin_unlock(&server->req_lock);
152 return -ENOENT;
153 }
154
155 scredits = server->credits;
156 /* can deadlock with reopen */
157 if (scredits == 1) {
158 *num = SMB2_MAX_BUFFER_SIZE;
159 *credits = 0;
160 break;
161 }
162
163 /* leave one credit for a possible reopen */
164 scredits--;
165 *num = min_t(unsigned int, size,
166 scredits * SMB2_MAX_BUFFER_SIZE);
167
168 *credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
169 server->credits -= *credits;
170 server->in_flight++;
171 break;
172 }
173 }
174 spin_unlock(&server->req_lock);
175 return rc;
176 }
177
178 static __u64
179 smb2_get_next_mid(struct TCP_Server_Info *server)
180 {
181 __u64 mid;
182 /* for SMB2 we need the current value */
183 spin_lock(&GlobalMid_Lock);
184 mid = server->CurrentMid++;
185 spin_unlock(&GlobalMid_Lock);
186 return mid;
187 }
188
189 static struct mid_q_entry *
190 smb2_find_mid(struct TCP_Server_Info *server, char *buf)
191 {
192 struct mid_q_entry *mid;
193 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
194 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
195
196 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
197 cifs_dbg(VFS, "encrypted frame parsing not supported yet");
198 return NULL;
199 }
200
201 spin_lock(&GlobalMid_Lock);
202 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
203 if ((mid->mid == wire_mid) &&
204 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
205 (mid->command == shdr->Command)) {
206 spin_unlock(&GlobalMid_Lock);
207 return mid;
208 }
209 }
210 spin_unlock(&GlobalMid_Lock);
211 return NULL;
212 }
213
214 static void
215 smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
216 {
217 #ifdef CONFIG_CIFS_DEBUG2
218 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
219
220 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
221 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
222 shdr->ProcessId);
223 cifs_dbg(VFS, "smb buf %p len %u\n", buf,
224 server->ops->calc_smb_size(buf, server));
225 #endif
226 }
227
228 static bool
229 smb2_need_neg(struct TCP_Server_Info *server)
230 {
231 return server->max_read == 0;
232 }
233
234 static int
235 smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
236 {
237 int rc;
238 ses->server->CurrentMid = 0;
239 rc = SMB2_negotiate(xid, ses);
240 /* BB we probably don't need to retry with modern servers */
241 if (rc == -EAGAIN)
242 rc = -EHOSTDOWN;
243 return rc;
244 }
245
246 static unsigned int
247 smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
248 {
249 struct TCP_Server_Info *server = tcon->ses->server;
250 unsigned int wsize;
251
252 /* start with specified wsize, or default */
253 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
254 wsize = min_t(unsigned int, wsize, server->max_write);
255 #ifdef CONFIG_CIFS_SMB_DIRECT
256 if (server->rdma) {
257 if (server->sign)
258 wsize = min_t(unsigned int,
259 wsize, server->smbd_conn->max_fragmented_send_size);
260 else
261 wsize = min_t(unsigned int,
262 wsize, server->smbd_conn->max_readwrite_size);
263 }
264 #endif
265 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
266 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
267
268 return wsize;
269 }
270
271 static unsigned int
272 smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
273 {
274 struct TCP_Server_Info *server = tcon->ses->server;
275 unsigned int rsize;
276
277 /* start with specified rsize, or default */
278 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
279 rsize = min_t(unsigned int, rsize, server->max_read);
280 #ifdef CONFIG_CIFS_SMB_DIRECT
281 if (server->rdma) {
282 if (server->sign)
283 rsize = min_t(unsigned int,
284 rsize, server->smbd_conn->max_fragmented_recv_size);
285 else
286 rsize = min_t(unsigned int,
287 rsize, server->smbd_conn->max_readwrite_size);
288 }
289 #endif
290
291 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
292 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
293
294 return rsize;
295 }
296
297
298 static int
299 parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
300 size_t buf_len,
301 struct cifs_server_iface **iface_list,
302 size_t *iface_count)
303 {
304 struct network_interface_info_ioctl_rsp *p;
305 struct sockaddr_in *addr4;
306 struct sockaddr_in6 *addr6;
307 struct iface_info_ipv4 *p4;
308 struct iface_info_ipv6 *p6;
309 struct cifs_server_iface *info;
310 ssize_t bytes_left;
311 size_t next = 0;
312 int nb_iface = 0;
313 int rc = 0;
314
315 *iface_list = NULL;
316 *iface_count = 0;
317
318 /*
319 * Fist pass: count and sanity check
320 */
321
322 bytes_left = buf_len;
323 p = buf;
324 while (bytes_left >= sizeof(*p)) {
325 nb_iface++;
326 next = le32_to_cpu(p->Next);
327 if (!next) {
328 bytes_left -= sizeof(*p);
329 break;
330 }
331 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
332 bytes_left -= next;
333 }
334
335 if (!nb_iface) {
336 cifs_dbg(VFS, "%s: malformed interface info\n", __func__);
337 rc = -EINVAL;
338 goto out;
339 }
340
341 if (bytes_left || p->Next)
342 cifs_dbg(VFS, "%s: incomplete interface info\n", __func__);
343
344
345 /*
346 * Second pass: extract info to internal structure
347 */
348
349 *iface_list = kcalloc(nb_iface, sizeof(**iface_list), GFP_KERNEL);
350 if (!*iface_list) {
351 rc = -ENOMEM;
352 goto out;
353 }
354
355 info = *iface_list;
356 bytes_left = buf_len;
357 p = buf;
358 while (bytes_left >= sizeof(*p)) {
359 info->speed = le64_to_cpu(p->LinkSpeed);
360 info->rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE);
361 info->rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE);
362
363 cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, *iface_count);
364 cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed);
365 cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__,
366 le32_to_cpu(p->Capability));
367
368 switch (p->Family) {
369 /*
370 * The kernel and wire socket structures have the same
371 * layout and use network byte order but make the
372 * conversion explicit in case either one changes.
373 */
374 case INTERNETWORK:
375 addr4 = (struct sockaddr_in *)&info->sockaddr;
376 p4 = (struct iface_info_ipv4 *)p->Buffer;
377 addr4->sin_family = AF_INET;
378 memcpy(&addr4->sin_addr, &p4->IPv4Address, 4);
379
380 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
381 addr4->sin_port = cpu_to_be16(CIFS_PORT);
382
383 cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__,
384 &addr4->sin_addr);
385 break;
386 case INTERNETWORKV6:
387 addr6 = (struct sockaddr_in6 *)&info->sockaddr;
388 p6 = (struct iface_info_ipv6 *)p->Buffer;
389 addr6->sin6_family = AF_INET6;
390 memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16);
391
392 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
393 addr6->sin6_flowinfo = 0;
394 addr6->sin6_scope_id = 0;
395 addr6->sin6_port = cpu_to_be16(CIFS_PORT);
396
397 cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__,
398 &addr6->sin6_addr);
399 break;
400 default:
401 cifs_dbg(VFS,
402 "%s: skipping unsupported socket family\n",
403 __func__);
404 goto next_iface;
405 }
406
407 (*iface_count)++;
408 info++;
409 next_iface:
410 next = le32_to_cpu(p->Next);
411 if (!next)
412 break;
413 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
414 bytes_left -= next;
415 }
416
417 if (!*iface_count) {
418 rc = -EINVAL;
419 goto out;
420 }
421
422 out:
423 if (rc) {
424 kfree(*iface_list);
425 *iface_count = 0;
426 *iface_list = NULL;
427 }
428 return rc;
429 }
430
431
432 static int
433 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
434 {
435 int rc;
436 unsigned int ret_data_len = 0;
437 struct network_interface_info_ioctl_rsp *out_buf = NULL;
438 struct cifs_server_iface *iface_list;
439 size_t iface_count;
440 struct cifs_ses *ses = tcon->ses;
441
442 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
443 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
444 NULL /* no data input */, 0 /* no data input */,
445 (char **)&out_buf, &ret_data_len);
446 if (rc != 0) {
447 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
448 goto out;
449 }
450
451 rc = parse_server_interfaces(out_buf, ret_data_len,
452 &iface_list, &iface_count);
453 if (rc)
454 goto out;
455
456 spin_lock(&ses->iface_lock);
457 kfree(ses->iface_list);
458 ses->iface_list = iface_list;
459 ses->iface_count = iface_count;
460 ses->iface_last_update = jiffies;
461 spin_unlock(&ses->iface_lock);
462
463 out:
464 kfree(out_buf);
465 return rc;
466 }
467
468 void
469 smb2_cached_lease_break(struct work_struct *work)
470 {
471 struct cached_fid *cfid = container_of(work,
472 struct cached_fid, lease_break);
473 mutex_lock(&cfid->fid_mutex);
474 if (cfid->is_valid) {
475 cifs_dbg(FYI, "clear cached root file handle\n");
476 SMB2_close(0, cfid->tcon, cfid->fid->persistent_fid,
477 cfid->fid->volatile_fid);
478 cfid->is_valid = false;
479 }
480 mutex_unlock(&cfid->fid_mutex);
481 }
482
483 /*
484 * Open the directory at the root of a share
485 */
486 int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
487 {
488 struct cifs_open_parms oparams;
489 int rc;
490 __le16 srch_path = 0; /* Null - since an open of top of share */
491 u8 oplock = SMB2_OPLOCK_LEVEL_II;
492
493 mutex_lock(&tcon->crfid.fid_mutex);
494 if (tcon->crfid.is_valid) {
495 cifs_dbg(FYI, "found a cached root file handle\n");
496 memcpy(pfid, tcon->crfid.fid, sizeof(struct cifs_fid));
497 mutex_unlock(&tcon->crfid.fid_mutex);
498 return 0;
499 }
500
501 oparams.tcon = tcon;
502 oparams.create_options = 0;
503 oparams.desired_access = FILE_READ_ATTRIBUTES;
504 oparams.disposition = FILE_OPEN;
505 oparams.fid = pfid;
506 oparams.reconnect = false;
507
508 rc = SMB2_open(xid, &oparams, &srch_path, &oplock, NULL, NULL, NULL);
509 if (rc == 0) {
510 memcpy(tcon->crfid.fid, pfid, sizeof(struct cifs_fid));
511 tcon->crfid.tcon = tcon;
512 tcon->crfid.is_valid = true;
513 }
514 mutex_unlock(&tcon->crfid.fid_mutex);
515 return rc;
516 }
517
518 static void
519 smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
520 {
521 int rc;
522 __le16 srch_path = 0; /* Null - open root of share */
523 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
524 struct cifs_open_parms oparms;
525 struct cifs_fid fid;
526 bool no_cached_open = tcon->nohandlecache;
527
528 oparms.tcon = tcon;
529 oparms.desired_access = FILE_READ_ATTRIBUTES;
530 oparms.disposition = FILE_OPEN;
531 oparms.create_options = 0;
532 oparms.fid = &fid;
533 oparms.reconnect = false;
534
535 if (no_cached_open)
536 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
537 NULL);
538 else
539 rc = open_shroot(xid, tcon, &fid);
540
541 if (rc)
542 return;
543
544 SMB3_request_interfaces(xid, tcon);
545
546 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
547 FS_ATTRIBUTE_INFORMATION);
548 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
549 FS_DEVICE_INFORMATION);
550 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
551 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
552 if (no_cached_open)
553 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
554 return;
555 }
556
557 static void
558 smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
559 {
560 int rc;
561 __le16 srch_path = 0; /* Null - open root of share */
562 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
563 struct cifs_open_parms oparms;
564 struct cifs_fid fid;
565
566 oparms.tcon = tcon;
567 oparms.desired_access = FILE_READ_ATTRIBUTES;
568 oparms.disposition = FILE_OPEN;
569 oparms.create_options = 0;
570 oparms.fid = &fid;
571 oparms.reconnect = false;
572
573 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
574 if (rc)
575 return;
576
577 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
578 FS_ATTRIBUTE_INFORMATION);
579 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
580 FS_DEVICE_INFORMATION);
581 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
582 return;
583 }
584
585 static int
586 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
587 struct cifs_sb_info *cifs_sb, const char *full_path)
588 {
589 int rc;
590 __le16 *utf16_path;
591 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
592 struct cifs_open_parms oparms;
593 struct cifs_fid fid;
594
595 if ((*full_path == 0) && tcon->crfid.is_valid)
596 return 0;
597
598 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
599 if (!utf16_path)
600 return -ENOMEM;
601
602 oparms.tcon = tcon;
603 oparms.desired_access = FILE_READ_ATTRIBUTES;
604 oparms.disposition = FILE_OPEN;
605 oparms.create_options = 0;
606 oparms.fid = &fid;
607 oparms.reconnect = false;
608
609 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
610 if (rc) {
611 kfree(utf16_path);
612 return rc;
613 }
614
615 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
616 kfree(utf16_path);
617 return rc;
618 }
619
620 static int
621 smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
622 struct cifs_sb_info *cifs_sb, const char *full_path,
623 u64 *uniqueid, FILE_ALL_INFO *data)
624 {
625 *uniqueid = le64_to_cpu(data->IndexNumber);
626 return 0;
627 }
628
629 static int
630 smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
631 struct cifs_fid *fid, FILE_ALL_INFO *data)
632 {
633 int rc;
634 struct smb2_file_all_info *smb2_data;
635
636 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
637 GFP_KERNEL);
638 if (smb2_data == NULL)
639 return -ENOMEM;
640
641 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
642 smb2_data);
643 if (!rc)
644 move_smb2_info_to_cifs(data, smb2_data);
645 kfree(smb2_data);
646 return rc;
647 }
648
649 #ifdef CONFIG_CIFS_XATTR
650 static ssize_t
651 move_smb2_ea_to_cifs(char *dst, size_t dst_size,
652 struct smb2_file_full_ea_info *src, size_t src_size,
653 const unsigned char *ea_name)
654 {
655 int rc = 0;
656 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
657 char *name, *value;
658 size_t name_len, value_len, user_name_len;
659
660 while (src_size > 0) {
661 name = &src->ea_data[0];
662 name_len = (size_t)src->ea_name_length;
663 value = &src->ea_data[src->ea_name_length + 1];
664 value_len = (size_t)le16_to_cpu(src->ea_value_length);
665
666 if (name_len == 0) {
667 break;
668 }
669
670 if (src_size < 8 + name_len + 1 + value_len) {
671 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
672 rc = -EIO;
673 goto out;
674 }
675
676 if (ea_name) {
677 if (ea_name_len == name_len &&
678 memcmp(ea_name, name, name_len) == 0) {
679 rc = value_len;
680 if (dst_size == 0)
681 goto out;
682 if (dst_size < value_len) {
683 rc = -ERANGE;
684 goto out;
685 }
686 memcpy(dst, value, value_len);
687 goto out;
688 }
689 } else {
690 /* 'user.' plus a terminating null */
691 user_name_len = 5 + 1 + name_len;
692
693 rc += user_name_len;
694
695 if (dst_size >= user_name_len) {
696 dst_size -= user_name_len;
697 memcpy(dst, "user.", 5);
698 dst += 5;
699 memcpy(dst, src->ea_data, name_len);
700 dst += name_len;
701 *dst = 0;
702 ++dst;
703 } else if (dst_size == 0) {
704 /* skip copy - calc size only */
705 } else {
706 /* stop before overrun buffer */
707 rc = -ERANGE;
708 break;
709 }
710 }
711
712 if (!src->next_entry_offset)
713 break;
714
715 if (src_size < le32_to_cpu(src->next_entry_offset)) {
716 /* stop before overrun buffer */
717 rc = -ERANGE;
718 break;
719 }
720 src_size -= le32_to_cpu(src->next_entry_offset);
721 src = (void *)((char *)src +
722 le32_to_cpu(src->next_entry_offset));
723 }
724
725 /* didn't find the named attribute */
726 if (ea_name)
727 rc = -ENODATA;
728
729 out:
730 return (ssize_t)rc;
731 }
732
733 static ssize_t
734 smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
735 const unsigned char *path, const unsigned char *ea_name,
736 char *ea_data, size_t buf_size,
737 struct cifs_sb_info *cifs_sb)
738 {
739 int rc;
740 __le16 *utf16_path;
741 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
742 struct cifs_open_parms oparms;
743 struct cifs_fid fid;
744 struct smb2_file_full_ea_info *smb2_data;
745 int ea_buf_size = SMB2_MIN_EA_BUF;
746
747 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
748 if (!utf16_path)
749 return -ENOMEM;
750
751 oparms.tcon = tcon;
752 oparms.desired_access = FILE_READ_EA;
753 oparms.disposition = FILE_OPEN;
754 oparms.create_options = 0;
755 oparms.fid = &fid;
756 oparms.reconnect = false;
757
758 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
759 kfree(utf16_path);
760 if (rc) {
761 cifs_dbg(FYI, "open failed rc=%d\n", rc);
762 return rc;
763 }
764
765 while (1) {
766 smb2_data = kzalloc(ea_buf_size, GFP_KERNEL);
767 if (smb2_data == NULL) {
768 SMB2_close(xid, tcon, fid.persistent_fid,
769 fid.volatile_fid);
770 return -ENOMEM;
771 }
772
773 rc = SMB2_query_eas(xid, tcon, fid.persistent_fid,
774 fid.volatile_fid,
775 ea_buf_size, smb2_data);
776
777 if (rc != -E2BIG)
778 break;
779
780 kfree(smb2_data);
781 ea_buf_size <<= 1;
782
783 if (ea_buf_size > SMB2_MAX_EA_BUF) {
784 cifs_dbg(VFS, "EA size is too large\n");
785 SMB2_close(xid, tcon, fid.persistent_fid,
786 fid.volatile_fid);
787 return -ENOMEM;
788 }
789 }
790
791 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
792
793 /*
794 * If ea_name is NULL (listxattr) and there are no EAs, return 0 as it's
795 * not an error. Otherwise, the specified ea_name was not found.
796 */
797 if (!rc)
798 rc = move_smb2_ea_to_cifs(ea_data, buf_size, smb2_data,
799 SMB2_MAX_EA_BUF, ea_name);
800 else if (!ea_name && rc == -ENODATA)
801 rc = 0;
802
803 kfree(smb2_data);
804 return rc;
805 }
806
807
808 static int
809 smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
810 const char *path, const char *ea_name, const void *ea_value,
811 const __u16 ea_value_len, const struct nls_table *nls_codepage,
812 struct cifs_sb_info *cifs_sb)
813 {
814 int rc;
815 __le16 *utf16_path;
816 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
817 struct cifs_open_parms oparms;
818 struct cifs_fid fid;
819 struct smb2_file_full_ea_info *ea;
820 int ea_name_len = strlen(ea_name);
821 int len;
822
823 if (ea_name_len > 255)
824 return -EINVAL;
825
826 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
827 if (!utf16_path)
828 return -ENOMEM;
829
830 oparms.tcon = tcon;
831 oparms.desired_access = FILE_WRITE_EA;
832 oparms.disposition = FILE_OPEN;
833 oparms.create_options = 0;
834 oparms.fid = &fid;
835 oparms.reconnect = false;
836
837 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
838 kfree(utf16_path);
839 if (rc) {
840 cifs_dbg(FYI, "open failed rc=%d\n", rc);
841 return rc;
842 }
843
844 len = sizeof(ea) + ea_name_len + ea_value_len + 1;
845 ea = kzalloc(len, GFP_KERNEL);
846 if (ea == NULL) {
847 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
848 return -ENOMEM;
849 }
850
851 ea->ea_name_length = ea_name_len;
852 ea->ea_value_length = cpu_to_le16(ea_value_len);
853 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
854 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
855
856 rc = SMB2_set_ea(xid, tcon, fid.persistent_fid, fid.volatile_fid, ea,
857 len);
858 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
859
860 return rc;
861 }
862 #endif
863
864 static bool
865 smb2_can_echo(struct TCP_Server_Info *server)
866 {
867 return server->echoes;
868 }
869
870 static void
871 smb2_clear_stats(struct cifs_tcon *tcon)
872 {
873 #ifdef CONFIG_CIFS_STATS
874 int i;
875 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
876 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
877 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
878 }
879 #endif
880 }
881
882 static void
883 smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
884 {
885 seq_puts(m, "\n\tShare Capabilities:");
886 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
887 seq_puts(m, " DFS,");
888 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
889 seq_puts(m, " CONTINUOUS AVAILABILITY,");
890 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
891 seq_puts(m, " SCALEOUT,");
892 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
893 seq_puts(m, " CLUSTER,");
894 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
895 seq_puts(m, " ASYMMETRIC,");
896 if (tcon->capabilities == 0)
897 seq_puts(m, " None");
898 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
899 seq_puts(m, " Aligned,");
900 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
901 seq_puts(m, " Partition Aligned,");
902 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
903 seq_puts(m, " SSD,");
904 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
905 seq_puts(m, " TRIM-support,");
906
907 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
908 seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
909 if (tcon->perf_sector_size)
910 seq_printf(m, "\tOptimal sector size: 0x%x",
911 tcon->perf_sector_size);
912 seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
913 }
914
915 static void
916 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
917 {
918 #ifdef CONFIG_CIFS_STATS
919 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
920 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
921 seq_printf(m, "\nNegotiates: %d sent %d failed",
922 atomic_read(&sent[SMB2_NEGOTIATE_HE]),
923 atomic_read(&failed[SMB2_NEGOTIATE_HE]));
924 seq_printf(m, "\nSessionSetups: %d sent %d failed",
925 atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
926 atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
927 seq_printf(m, "\nLogoffs: %d sent %d failed",
928 atomic_read(&sent[SMB2_LOGOFF_HE]),
929 atomic_read(&failed[SMB2_LOGOFF_HE]));
930 seq_printf(m, "\nTreeConnects: %d sent %d failed",
931 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
932 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
933 seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
934 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
935 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
936 seq_printf(m, "\nCreates: %d sent %d failed",
937 atomic_read(&sent[SMB2_CREATE_HE]),
938 atomic_read(&failed[SMB2_CREATE_HE]));
939 seq_printf(m, "\nCloses: %d sent %d failed",
940 atomic_read(&sent[SMB2_CLOSE_HE]),
941 atomic_read(&failed[SMB2_CLOSE_HE]));
942 seq_printf(m, "\nFlushes: %d sent %d failed",
943 atomic_read(&sent[SMB2_FLUSH_HE]),
944 atomic_read(&failed[SMB2_FLUSH_HE]));
945 seq_printf(m, "\nReads: %d sent %d failed",
946 atomic_read(&sent[SMB2_READ_HE]),
947 atomic_read(&failed[SMB2_READ_HE]));
948 seq_printf(m, "\nWrites: %d sent %d failed",
949 atomic_read(&sent[SMB2_WRITE_HE]),
950 atomic_read(&failed[SMB2_WRITE_HE]));
951 seq_printf(m, "\nLocks: %d sent %d failed",
952 atomic_read(&sent[SMB2_LOCK_HE]),
953 atomic_read(&failed[SMB2_LOCK_HE]));
954 seq_printf(m, "\nIOCTLs: %d sent %d failed",
955 atomic_read(&sent[SMB2_IOCTL_HE]),
956 atomic_read(&failed[SMB2_IOCTL_HE]));
957 seq_printf(m, "\nCancels: %d sent %d failed",
958 atomic_read(&sent[SMB2_CANCEL_HE]),
959 atomic_read(&failed[SMB2_CANCEL_HE]));
960 seq_printf(m, "\nEchos: %d sent %d failed",
961 atomic_read(&sent[SMB2_ECHO_HE]),
962 atomic_read(&failed[SMB2_ECHO_HE]));
963 seq_printf(m, "\nQueryDirectories: %d sent %d failed",
964 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
965 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
966 seq_printf(m, "\nChangeNotifies: %d sent %d failed",
967 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
968 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
969 seq_printf(m, "\nQueryInfos: %d sent %d failed",
970 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
971 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
972 seq_printf(m, "\nSetInfos: %d sent %d failed",
973 atomic_read(&sent[SMB2_SET_INFO_HE]),
974 atomic_read(&failed[SMB2_SET_INFO_HE]));
975 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
976 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
977 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
978 #endif
979 }
980
981 static void
982 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
983 {
984 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
985 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
986
987 cfile->fid.persistent_fid = fid->persistent_fid;
988 cfile->fid.volatile_fid = fid->volatile_fid;
989 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
990 &fid->purge_cache);
991 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
992 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
993 }
994
995 static void
996 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
997 struct cifs_fid *fid)
998 {
999 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1000 }
1001
1002 static int
1003 SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
1004 u64 persistent_fid, u64 volatile_fid,
1005 struct copychunk_ioctl *pcchunk)
1006 {
1007 int rc;
1008 unsigned int ret_data_len;
1009 struct resume_key_req *res_key;
1010
1011 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
1012 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
1013 NULL, 0 /* no input */,
1014 (char **)&res_key, &ret_data_len);
1015
1016 if (rc) {
1017 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
1018 goto req_res_key_exit;
1019 }
1020 if (ret_data_len < sizeof(struct resume_key_req)) {
1021 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
1022 rc = -EINVAL;
1023 goto req_res_key_exit;
1024 }
1025 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
1026
1027 req_res_key_exit:
1028 kfree(res_key);
1029 return rc;
1030 }
1031
1032 static ssize_t
1033 smb2_copychunk_range(const unsigned int xid,
1034 struct cifsFileInfo *srcfile,
1035 struct cifsFileInfo *trgtfile, u64 src_off,
1036 u64 len, u64 dest_off)
1037 {
1038 int rc;
1039 unsigned int ret_data_len;
1040 struct copychunk_ioctl *pcchunk;
1041 struct copychunk_ioctl_rsp *retbuf = NULL;
1042 struct cifs_tcon *tcon;
1043 int chunks_copied = 0;
1044 bool chunk_sizes_updated = false;
1045 ssize_t bytes_written, total_bytes_written = 0;
1046
1047 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
1048
1049 if (pcchunk == NULL)
1050 return -ENOMEM;
1051
1052 cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
1053 /* Request a key from the server to identify the source of the copy */
1054 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
1055 srcfile->fid.persistent_fid,
1056 srcfile->fid.volatile_fid, pcchunk);
1057
1058 /* Note: request_res_key sets res_key null only if rc !=0 */
1059 if (rc)
1060 goto cchunk_out;
1061
1062 /* For now array only one chunk long, will make more flexible later */
1063 pcchunk->ChunkCount = cpu_to_le32(1);
1064 pcchunk->Reserved = 0;
1065 pcchunk->Reserved2 = 0;
1066
1067 tcon = tlink_tcon(trgtfile->tlink);
1068
1069 while (len > 0) {
1070 pcchunk->SourceOffset = cpu_to_le64(src_off);
1071 pcchunk->TargetOffset = cpu_to_le64(dest_off);
1072 pcchunk->Length =
1073 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
1074
1075 /* Request server copy to target from src identified by key */
1076 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1077 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
1078 true /* is_fsctl */, (char *)pcchunk,
1079 sizeof(struct copychunk_ioctl), (char **)&retbuf,
1080 &ret_data_len);
1081 if (rc == 0) {
1082 if (ret_data_len !=
1083 sizeof(struct copychunk_ioctl_rsp)) {
1084 cifs_dbg(VFS, "invalid cchunk response size\n");
1085 rc = -EIO;
1086 goto cchunk_out;
1087 }
1088 if (retbuf->TotalBytesWritten == 0) {
1089 cifs_dbg(FYI, "no bytes copied\n");
1090 rc = -EIO;
1091 goto cchunk_out;
1092 }
1093 /*
1094 * Check if server claimed to write more than we asked
1095 */
1096 if (le32_to_cpu(retbuf->TotalBytesWritten) >
1097 le32_to_cpu(pcchunk->Length)) {
1098 cifs_dbg(VFS, "invalid copy chunk response\n");
1099 rc = -EIO;
1100 goto cchunk_out;
1101 }
1102 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
1103 cifs_dbg(VFS, "invalid num chunks written\n");
1104 rc = -EIO;
1105 goto cchunk_out;
1106 }
1107 chunks_copied++;
1108
1109 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
1110 src_off += bytes_written;
1111 dest_off += bytes_written;
1112 len -= bytes_written;
1113 total_bytes_written += bytes_written;
1114
1115 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
1116 le32_to_cpu(retbuf->ChunksWritten),
1117 le32_to_cpu(retbuf->ChunkBytesWritten),
1118 bytes_written);
1119 } else if (rc == -EINVAL) {
1120 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
1121 goto cchunk_out;
1122
1123 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1124 le32_to_cpu(retbuf->ChunksWritten),
1125 le32_to_cpu(retbuf->ChunkBytesWritten),
1126 le32_to_cpu(retbuf->TotalBytesWritten));
1127
1128 /*
1129 * Check if this is the first request using these sizes,
1130 * (ie check if copy succeed once with original sizes
1131 * and check if the server gave us different sizes after
1132 * we already updated max sizes on previous request).
1133 * if not then why is the server returning an error now
1134 */
1135 if ((chunks_copied != 0) || chunk_sizes_updated)
1136 goto cchunk_out;
1137
1138 /* Check that server is not asking us to grow size */
1139 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
1140 tcon->max_bytes_chunk)
1141 tcon->max_bytes_chunk =
1142 le32_to_cpu(retbuf->ChunkBytesWritten);
1143 else
1144 goto cchunk_out; /* server gave us bogus size */
1145
1146 /* No need to change MaxChunks since already set to 1 */
1147 chunk_sizes_updated = true;
1148 } else
1149 goto cchunk_out;
1150 }
1151
1152 cchunk_out:
1153 kfree(pcchunk);
1154 kfree(retbuf);
1155 if (rc)
1156 return rc;
1157 else
1158 return total_bytes_written;
1159 }
1160
1161 static int
1162 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1163 struct cifs_fid *fid)
1164 {
1165 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1166 }
1167
1168 static unsigned int
1169 smb2_read_data_offset(char *buf)
1170 {
1171 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1172 return rsp->DataOffset;
1173 }
1174
1175 static unsigned int
1176 smb2_read_data_length(char *buf, bool in_remaining)
1177 {
1178 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1179
1180 if (in_remaining)
1181 return le32_to_cpu(rsp->DataRemaining);
1182
1183 return le32_to_cpu(rsp->DataLength);
1184 }
1185
1186
1187 static int
1188 smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
1189 struct cifs_io_parms *parms, unsigned int *bytes_read,
1190 char **buf, int *buf_type)
1191 {
1192 parms->persistent_fid = pfid->persistent_fid;
1193 parms->volatile_fid = pfid->volatile_fid;
1194 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1195 }
1196
1197 static int
1198 smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
1199 struct cifs_io_parms *parms, unsigned int *written,
1200 struct kvec *iov, unsigned long nr_segs)
1201 {
1202
1203 parms->persistent_fid = pfid->persistent_fid;
1204 parms->volatile_fid = pfid->volatile_fid;
1205 return SMB2_write(xid, parms, written, iov, nr_segs);
1206 }
1207
1208 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1209 static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1210 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1211 {
1212 struct cifsInodeInfo *cifsi;
1213 int rc;
1214
1215 cifsi = CIFS_I(inode);
1216
1217 /* if file already sparse don't bother setting sparse again */
1218 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1219 return true; /* already sparse */
1220
1221 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1222 return true; /* already not sparse */
1223
1224 /*
1225 * Can't check for sparse support on share the usual way via the
1226 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1227 * since Samba server doesn't set the flag on the share, yet
1228 * supports the set sparse FSCTL and returns sparse correctly
1229 * in the file attributes. If we fail setting sparse though we
1230 * mark that server does not support sparse files for this share
1231 * to avoid repeatedly sending the unsupported fsctl to server
1232 * if the file is repeatedly extended.
1233 */
1234 if (tcon->broken_sparse_sup)
1235 return false;
1236
1237 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1238 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
1239 true /* is_fctl */,
1240 &setsparse, 1, NULL, NULL);
1241 if (rc) {
1242 tcon->broken_sparse_sup = true;
1243 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1244 return false;
1245 }
1246
1247 if (setsparse)
1248 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1249 else
1250 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1251
1252 return true;
1253 }
1254
1255 static int
1256 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1257 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1258 {
1259 __le64 eof = cpu_to_le64(size);
1260 struct inode *inode;
1261
1262 /*
1263 * If extending file more than one page make sparse. Many Linux fs
1264 * make files sparse by default when extending via ftruncate
1265 */
1266 inode = d_inode(cfile->dentry);
1267
1268 if (!set_alloc && (size > inode->i_size + 8192)) {
1269 __u8 set_sparse = 1;
1270
1271 /* whether set sparse succeeds or not, extend the file */
1272 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
1273 }
1274
1275 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
1276 cfile->fid.volatile_fid, cfile->pid, &eof, false);
1277 }
1278
1279 static int
1280 smb2_duplicate_extents(const unsigned int xid,
1281 struct cifsFileInfo *srcfile,
1282 struct cifsFileInfo *trgtfile, u64 src_off,
1283 u64 len, u64 dest_off)
1284 {
1285 int rc;
1286 unsigned int ret_data_len;
1287 struct duplicate_extents_to_file dup_ext_buf;
1288 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1289
1290 /* server fileays advertise duplicate extent support with this flag */
1291 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1292 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1293 return -EOPNOTSUPP;
1294
1295 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1296 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1297 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1298 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1299 dup_ext_buf.ByteCount = cpu_to_le64(len);
1300 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
1301 src_off, dest_off, len);
1302
1303 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1304 if (rc)
1305 goto duplicate_extents_out;
1306
1307 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1308 trgtfile->fid.volatile_fid,
1309 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
1310 true /* is_fsctl */,
1311 (char *)&dup_ext_buf,
1312 sizeof(struct duplicate_extents_to_file),
1313 NULL,
1314 &ret_data_len);
1315
1316 if (ret_data_len > 0)
1317 cifs_dbg(FYI, "non-zero response length in duplicate extents");
1318
1319 duplicate_extents_out:
1320 return rc;
1321 }
1322
1323 static int
1324 smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
1325 struct cifsFileInfo *cfile)
1326 {
1327 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
1328 cfile->fid.volatile_fid);
1329 }
1330
1331 static int
1332 smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
1333 struct cifsFileInfo *cfile)
1334 {
1335 struct fsctl_set_integrity_information_req integr_info;
1336 unsigned int ret_data_len;
1337
1338 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
1339 integr_info.Flags = 0;
1340 integr_info.Reserved = 0;
1341
1342 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1343 cfile->fid.volatile_fid,
1344 FSCTL_SET_INTEGRITY_INFORMATION,
1345 true /* is_fsctl */,
1346 (char *)&integr_info,
1347 sizeof(struct fsctl_set_integrity_information_req),
1348 NULL,
1349 &ret_data_len);
1350
1351 }
1352
1353 static int
1354 smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
1355 struct cifsFileInfo *cfile, void __user *ioc_buf)
1356 {
1357 char *retbuf = NULL;
1358 unsigned int ret_data_len = 0;
1359 int rc;
1360 struct smb_snapshot_array snapshot_in;
1361
1362 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1363 cfile->fid.volatile_fid,
1364 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
1365 true /* is_fsctl */,
1366 NULL, 0 /* no input data */,
1367 (char **)&retbuf,
1368 &ret_data_len);
1369 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
1370 rc, ret_data_len);
1371 if (rc)
1372 return rc;
1373
1374 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
1375 /* Fixup buffer */
1376 if (copy_from_user(&snapshot_in, ioc_buf,
1377 sizeof(struct smb_snapshot_array))) {
1378 rc = -EFAULT;
1379 kfree(retbuf);
1380 return rc;
1381 }
1382 if (snapshot_in.snapshot_array_size < sizeof(struct smb_snapshot_array)) {
1383 rc = -ERANGE;
1384 kfree(retbuf);
1385 return rc;
1386 }
1387
1388 if (ret_data_len > snapshot_in.snapshot_array_size)
1389 ret_data_len = snapshot_in.snapshot_array_size;
1390
1391 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
1392 rc = -EFAULT;
1393 }
1394
1395 kfree(retbuf);
1396 return rc;
1397 }
1398
1399 static int
1400 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
1401 const char *path, struct cifs_sb_info *cifs_sb,
1402 struct cifs_fid *fid, __u16 search_flags,
1403 struct cifs_search_info *srch_inf)
1404 {
1405 __le16 *utf16_path;
1406 int rc;
1407 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1408 struct cifs_open_parms oparms;
1409
1410 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1411 if (!utf16_path)
1412 return -ENOMEM;
1413
1414 oparms.tcon = tcon;
1415 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
1416 oparms.disposition = FILE_OPEN;
1417 oparms.create_options = 0;
1418 oparms.fid = fid;
1419 oparms.reconnect = false;
1420
1421 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
1422 kfree(utf16_path);
1423 if (rc) {
1424 cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
1425 return rc;
1426 }
1427
1428 srch_inf->entries_in_buffer = 0;
1429 srch_inf->index_of_last_entry = 0;
1430
1431 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
1432 fid->volatile_fid, 0, srch_inf);
1433 if (rc) {
1434 cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
1435 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1436 }
1437 return rc;
1438 }
1439
1440 static int
1441 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
1442 struct cifs_fid *fid, __u16 search_flags,
1443 struct cifs_search_info *srch_inf)
1444 {
1445 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
1446 fid->volatile_fid, 0, srch_inf);
1447 }
1448
1449 static int
1450 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1451 struct cifs_fid *fid)
1452 {
1453 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1454 }
1455
1456 /*
1457 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
1458 * the number of credits and return true. Otherwise - return false.
1459 */
1460 static bool
1461 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
1462 {
1463 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
1464
1465 if (shdr->Status != STATUS_PENDING)
1466 return false;
1467
1468 if (!length) {
1469 spin_lock(&server->req_lock);
1470 server->credits += le16_to_cpu(shdr->CreditRequest);
1471 spin_unlock(&server->req_lock);
1472 wake_up(&server->request_q);
1473 }
1474
1475 return true;
1476 }
1477
1478 static bool
1479 smb2_is_session_expired(char *buf)
1480 {
1481 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
1482
1483 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
1484 shdr->Status != STATUS_USER_SESSION_DELETED)
1485 return false;
1486
1487 cifs_dbg(FYI, "Session expired or deleted\n");
1488 return true;
1489 }
1490
1491 static int
1492 smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1493 struct cifsInodeInfo *cinode)
1494 {
1495 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1496 return SMB2_lease_break(0, tcon, cinode->lease_key,
1497 smb2_get_lease_state(cinode));
1498
1499 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1500 fid->volatile_fid,
1501 CIFS_CACHE_READ(cinode) ? 1 : 0);
1502 }
1503
1504 static int
1505 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1506 struct kstatfs *buf)
1507 {
1508 int rc;
1509 __le16 srch_path = 0; /* Null - open root of share */
1510 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1511 struct cifs_open_parms oparms;
1512 struct cifs_fid fid;
1513
1514 oparms.tcon = tcon;
1515 oparms.desired_access = FILE_READ_ATTRIBUTES;
1516 oparms.disposition = FILE_OPEN;
1517 oparms.create_options = 0;
1518 oparms.fid = &fid;
1519 oparms.reconnect = false;
1520
1521 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
1522 if (rc)
1523 return rc;
1524 buf->f_type = SMB2_MAGIC_NUMBER;
1525 rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
1526 buf);
1527 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1528 return rc;
1529 }
1530
1531 static bool
1532 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
1533 {
1534 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
1535 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
1536 }
1537
1538 static int
1539 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
1540 __u64 length, __u32 type, int lock, int unlock, bool wait)
1541 {
1542 if (unlock && !lock)
1543 type = SMB2_LOCKFLAG_UNLOCK;
1544 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
1545 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
1546 current->tgid, length, offset, type, wait);
1547 }
1548
1549 static void
1550 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
1551 {
1552 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
1553 }
1554
1555 static void
1556 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
1557 {
1558 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
1559 }
1560
1561 static void
1562 smb2_new_lease_key(struct cifs_fid *fid)
1563 {
1564 generate_random_uuid(fid->lease_key);
1565 }
1566
1567 static int
1568 smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
1569 const char *search_name,
1570 struct dfs_info3_param **target_nodes,
1571 unsigned int *num_of_nodes,
1572 const struct nls_table *nls_codepage, int remap)
1573 {
1574 int rc;
1575 __le16 *utf16_path = NULL;
1576 int utf16_path_len = 0;
1577 struct cifs_tcon *tcon;
1578 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
1579 struct get_dfs_referral_rsp *dfs_rsp = NULL;
1580 u32 dfs_req_size = 0, dfs_rsp_size = 0;
1581
1582 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
1583
1584 /*
1585 * Try to use the IPC tcon, otherwise just use any
1586 */
1587 tcon = ses->tcon_ipc;
1588 if (tcon == NULL) {
1589 spin_lock(&cifs_tcp_ses_lock);
1590 tcon = list_first_entry_or_null(&ses->tcon_list,
1591 struct cifs_tcon,
1592 tcon_list);
1593 if (tcon)
1594 tcon->tc_count++;
1595 spin_unlock(&cifs_tcp_ses_lock);
1596 }
1597
1598 if (tcon == NULL) {
1599 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
1600 ses);
1601 rc = -ENOTCONN;
1602 goto out;
1603 }
1604
1605 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
1606 &utf16_path_len,
1607 nls_codepage, remap);
1608 if (!utf16_path) {
1609 rc = -ENOMEM;
1610 goto out;
1611 }
1612
1613 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
1614 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
1615 if (!dfs_req) {
1616 rc = -ENOMEM;
1617 goto out;
1618 }
1619
1620 /* Highest DFS referral version understood */
1621 dfs_req->MaxReferralLevel = DFS_VERSION;
1622
1623 /* Path to resolve in an UTF-16 null-terminated string */
1624 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
1625
1626 do {
1627 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1628 FSCTL_DFS_GET_REFERRALS,
1629 true /* is_fsctl */,
1630 (char *)dfs_req, dfs_req_size,
1631 (char **)&dfs_rsp, &dfs_rsp_size);
1632 } while (rc == -EAGAIN);
1633
1634 if (rc) {
1635 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
1636 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
1637 goto out;
1638 }
1639
1640 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
1641 num_of_nodes, target_nodes,
1642 nls_codepage, remap, search_name,
1643 true /* is_unicode */);
1644 if (rc) {
1645 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
1646 goto out;
1647 }
1648
1649 out:
1650 if (tcon && !tcon->ipc) {
1651 /* ipc tcons are not refcounted */
1652 spin_lock(&cifs_tcp_ses_lock);
1653 tcon->tc_count--;
1654 spin_unlock(&cifs_tcp_ses_lock);
1655 }
1656 kfree(utf16_path);
1657 kfree(dfs_req);
1658 kfree(dfs_rsp);
1659 return rc;
1660 }
1661 #define SMB2_SYMLINK_STRUCT_SIZE \
1662 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
1663
1664 static int
1665 smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
1666 const char *full_path, char **target_path,
1667 struct cifs_sb_info *cifs_sb)
1668 {
1669 int rc;
1670 __le16 *utf16_path;
1671 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1672 struct cifs_open_parms oparms;
1673 struct cifs_fid fid;
1674 struct kvec err_iov = {NULL, 0};
1675 struct smb2_err_rsp *err_buf = NULL;
1676 int resp_buftype;
1677 struct smb2_symlink_err_rsp *symlink;
1678 unsigned int sub_len;
1679 unsigned int sub_offset;
1680 unsigned int print_len;
1681 unsigned int print_offset;
1682
1683 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
1684
1685 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
1686 if (!utf16_path)
1687 return -ENOMEM;
1688
1689 oparms.tcon = tcon;
1690 oparms.desired_access = FILE_READ_ATTRIBUTES;
1691 oparms.disposition = FILE_OPEN;
1692 oparms.create_options = 0;
1693 oparms.fid = &fid;
1694 oparms.reconnect = false;
1695
1696 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_iov,
1697 &resp_buftype);
1698 if (!rc || !err_iov.iov_base) {
1699 rc = -ENOENT;
1700 goto querty_exit;
1701 }
1702
1703 err_buf = err_iov.iov_base;
1704 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1705 err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) {
1706 rc = -ENOENT;
1707 goto querty_exit;
1708 }
1709
1710 /* open must fail on symlink - reset rc */
1711 rc = 0;
1712 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
1713 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
1714 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
1715 print_len = le16_to_cpu(symlink->PrintNameLength);
1716 print_offset = le16_to_cpu(symlink->PrintNameOffset);
1717
1718 if (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
1719 rc = -ENOENT;
1720 goto querty_exit;
1721 }
1722
1723 if (err_iov.iov_len <
1724 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
1725 rc = -ENOENT;
1726 goto querty_exit;
1727 }
1728
1729 *target_path = cifs_strndup_from_utf16(
1730 (char *)symlink->PathBuffer + sub_offset,
1731 sub_len, true, cifs_sb->local_nls);
1732 if (!(*target_path)) {
1733 rc = -ENOMEM;
1734 goto querty_exit;
1735 }
1736 convert_delimiter(*target_path, '/');
1737 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
1738
1739 querty_exit:
1740 free_rsp_buf(resp_buftype, err_buf);
1741 kfree(utf16_path);
1742 return rc;
1743 }
1744
1745 #ifdef CONFIG_CIFS_ACL
1746 static struct cifs_ntsd *
1747 get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
1748 const struct cifs_fid *cifsfid, u32 *pacllen)
1749 {
1750 struct cifs_ntsd *pntsd = NULL;
1751 unsigned int xid;
1752 int rc = -EOPNOTSUPP;
1753 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1754
1755 if (IS_ERR(tlink))
1756 return ERR_CAST(tlink);
1757
1758 xid = get_xid();
1759 cifs_dbg(FYI, "trying to get acl\n");
1760
1761 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
1762 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
1763 free_xid(xid);
1764
1765 cifs_put_tlink(tlink);
1766
1767 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1768 if (rc)
1769 return ERR_PTR(rc);
1770 return pntsd;
1771
1772 }
1773
1774 static struct cifs_ntsd *
1775 get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
1776 const char *path, u32 *pacllen)
1777 {
1778 struct cifs_ntsd *pntsd = NULL;
1779 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1780 unsigned int xid;
1781 int rc;
1782 struct cifs_tcon *tcon;
1783 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1784 struct cifs_fid fid;
1785 struct cifs_open_parms oparms;
1786 __le16 *utf16_path;
1787
1788 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
1789 if (IS_ERR(tlink))
1790 return ERR_CAST(tlink);
1791
1792 tcon = tlink_tcon(tlink);
1793 xid = get_xid();
1794
1795 if (backup_cred(cifs_sb))
1796 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1797 else
1798 oparms.create_options = 0;
1799
1800 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1801 if (!utf16_path) {
1802 rc = -ENOMEM;
1803 free_xid(xid);
1804 return ERR_PTR(rc);
1805 }
1806
1807 oparms.tcon = tcon;
1808 oparms.desired_access = READ_CONTROL;
1809 oparms.disposition = FILE_OPEN;
1810 oparms.fid = &fid;
1811 oparms.reconnect = false;
1812
1813 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
1814 kfree(utf16_path);
1815 if (!rc) {
1816 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
1817 fid.volatile_fid, (void **)&pntsd, pacllen);
1818 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1819 }
1820
1821 cifs_put_tlink(tlink);
1822 free_xid(xid);
1823
1824 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1825 if (rc)
1826 return ERR_PTR(rc);
1827 return pntsd;
1828 }
1829
1830 #ifdef CONFIG_CIFS_ACL
1831 static int
1832 set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
1833 struct inode *inode, const char *path, int aclflag)
1834 {
1835 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1836 unsigned int xid;
1837 int rc, access_flags = 0;
1838 struct cifs_tcon *tcon;
1839 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1840 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1841 struct cifs_fid fid;
1842 struct cifs_open_parms oparms;
1843 __le16 *utf16_path;
1844
1845 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
1846 if (IS_ERR(tlink))
1847 return PTR_ERR(tlink);
1848
1849 tcon = tlink_tcon(tlink);
1850 xid = get_xid();
1851
1852 if (backup_cred(cifs_sb))
1853 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1854 else
1855 oparms.create_options = 0;
1856
1857 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
1858 access_flags = WRITE_OWNER;
1859 else
1860 access_flags = WRITE_DAC;
1861
1862 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1863 if (!utf16_path) {
1864 rc = -ENOMEM;
1865 free_xid(xid);
1866 return rc;
1867 }
1868
1869 oparms.tcon = tcon;
1870 oparms.desired_access = access_flags;
1871 oparms.disposition = FILE_OPEN;
1872 oparms.path = path;
1873 oparms.fid = &fid;
1874 oparms.reconnect = false;
1875
1876 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
1877 kfree(utf16_path);
1878 if (!rc) {
1879 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
1880 fid.volatile_fid, pnntsd, acllen, aclflag);
1881 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1882 }
1883
1884 cifs_put_tlink(tlink);
1885 free_xid(xid);
1886 return rc;
1887 }
1888 #endif /* CIFS_ACL */
1889
1890 /* Retrieve an ACL from the server */
1891 static struct cifs_ntsd *
1892 get_smb2_acl(struct cifs_sb_info *cifs_sb,
1893 struct inode *inode, const char *path,
1894 u32 *pacllen)
1895 {
1896 struct cifs_ntsd *pntsd = NULL;
1897 struct cifsFileInfo *open_file = NULL;
1898
1899 if (inode)
1900 open_file = find_readable_file(CIFS_I(inode), true);
1901 if (!open_file)
1902 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
1903
1904 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
1905 cifsFileInfo_put(open_file);
1906 return pntsd;
1907 }
1908 #endif
1909
1910 static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
1911 loff_t offset, loff_t len, bool keep_size)
1912 {
1913 struct inode *inode;
1914 struct cifsInodeInfo *cifsi;
1915 struct cifsFileInfo *cfile = file->private_data;
1916 struct file_zero_data_information fsctl_buf;
1917 long rc;
1918 unsigned int xid;
1919
1920 xid = get_xid();
1921
1922 inode = d_inode(cfile->dentry);
1923 cifsi = CIFS_I(inode);
1924
1925 /* if file not oplocked can't be sure whether asking to extend size */
1926 if (!CIFS_CACHE_READ(cifsi))
1927 if (keep_size == false) {
1928 rc = -EOPNOTSUPP;
1929 free_xid(xid);
1930 return rc;
1931 }
1932
1933 /*
1934 * Must check if file sparse since fallocate -z (zero range) assumes
1935 * non-sparse allocation
1936 */
1937 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
1938 rc = -EOPNOTSUPP;
1939 free_xid(xid);
1940 return rc;
1941 }
1942
1943 /*
1944 * need to make sure we are not asked to extend the file since the SMB3
1945 * fsctl does not change the file size. In the future we could change
1946 * this to zero the first part of the range then set the file size
1947 * which for a non sparse file would zero the newly extended range
1948 */
1949 if (keep_size == false)
1950 if (i_size_read(inode) < offset + len) {
1951 rc = -EOPNOTSUPP;
1952 free_xid(xid);
1953 return rc;
1954 }
1955
1956 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1957
1958 fsctl_buf.FileOffset = cpu_to_le64(offset);
1959 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1960
1961 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1962 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
1963 true /* is_fctl */, (char *)&fsctl_buf,
1964 sizeof(struct file_zero_data_information), NULL, NULL);
1965 free_xid(xid);
1966 return rc;
1967 }
1968
1969 static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
1970 loff_t offset, loff_t len)
1971 {
1972 struct inode *inode;
1973 struct cifsInodeInfo *cifsi;
1974 struct cifsFileInfo *cfile = file->private_data;
1975 struct file_zero_data_information fsctl_buf;
1976 long rc;
1977 unsigned int xid;
1978 __u8 set_sparse = 1;
1979
1980 xid = get_xid();
1981
1982 inode = d_inode(cfile->dentry);
1983 cifsi = CIFS_I(inode);
1984
1985 /* Need to make file sparse, if not already, before freeing range. */
1986 /* Consider adding equivalent for compressed since it could also work */
1987 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
1988 rc = -EOPNOTSUPP;
1989 free_xid(xid);
1990 return rc;
1991 }
1992
1993 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1994
1995 fsctl_buf.FileOffset = cpu_to_le64(offset);
1996 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1997
1998 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1999 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
2000 true /* is_fctl */, (char *)&fsctl_buf,
2001 sizeof(struct file_zero_data_information), NULL, NULL);
2002 free_xid(xid);
2003 return rc;
2004 }
2005
2006 static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
2007 loff_t off, loff_t len, bool keep_size)
2008 {
2009 struct inode *inode;
2010 struct cifsInodeInfo *cifsi;
2011 struct cifsFileInfo *cfile = file->private_data;
2012 long rc = -EOPNOTSUPP;
2013 unsigned int xid;
2014
2015 xid = get_xid();
2016
2017 inode = d_inode(cfile->dentry);
2018 cifsi = CIFS_I(inode);
2019
2020 /* if file not oplocked can't be sure whether asking to extend size */
2021 if (!CIFS_CACHE_READ(cifsi))
2022 if (keep_size == false) {
2023 free_xid(xid);
2024 return rc;
2025 }
2026
2027 /*
2028 * Files are non-sparse by default so falloc may be a no-op
2029 * Must check if file sparse. If not sparse, and not extending
2030 * then no need to do anything since file already allocated
2031 */
2032 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
2033 if (keep_size == true)
2034 rc = 0;
2035 /* check if extending file */
2036 else if (i_size_read(inode) >= off + len)
2037 /* not extending file and already not sparse */
2038 rc = 0;
2039 /* BB: in future add else clause to extend file */
2040 else
2041 rc = -EOPNOTSUPP;
2042 free_xid(xid);
2043 return rc;
2044 }
2045
2046 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
2047 /*
2048 * Check if falloc starts within first few pages of file
2049 * and ends within a few pages of the end of file to
2050 * ensure that most of file is being forced to be
2051 * fallocated now. If so then setting whole file sparse
2052 * ie potentially making a few extra pages at the beginning
2053 * or end of the file non-sparse via set_sparse is harmless.
2054 */
2055 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
2056 rc = -EOPNOTSUPP;
2057 free_xid(xid);
2058 return rc;
2059 }
2060
2061 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
2062 }
2063 /* BB: else ... in future add code to extend file and set sparse */
2064
2065
2066 free_xid(xid);
2067 return rc;
2068 }
2069
2070
2071 static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
2072 loff_t off, loff_t len)
2073 {
2074 /* KEEP_SIZE already checked for by do_fallocate */
2075 if (mode & FALLOC_FL_PUNCH_HOLE)
2076 return smb3_punch_hole(file, tcon, off, len);
2077 else if (mode & FALLOC_FL_ZERO_RANGE) {
2078 if (mode & FALLOC_FL_KEEP_SIZE)
2079 return smb3_zero_range(file, tcon, off, len, true);
2080 return smb3_zero_range(file, tcon, off, len, false);
2081 } else if (mode == FALLOC_FL_KEEP_SIZE)
2082 return smb3_simple_falloc(file, tcon, off, len, true);
2083 else if (mode == 0)
2084 return smb3_simple_falloc(file, tcon, off, len, false);
2085
2086 return -EOPNOTSUPP;
2087 }
2088
2089 static void
2090 smb2_downgrade_oplock(struct TCP_Server_Info *server,
2091 struct cifsInodeInfo *cinode, bool set_level2)
2092 {
2093 if (set_level2)
2094 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
2095 0, NULL);
2096 else
2097 server->ops->set_oplock_level(cinode, 0, 0, NULL);
2098 }
2099
2100 static void
2101 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2102 unsigned int epoch, bool *purge_cache)
2103 {
2104 oplock &= 0xFF;
2105 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2106 return;
2107 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
2108 cinode->oplock = CIFS_CACHE_RHW_FLG;
2109 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
2110 &cinode->vfs_inode);
2111 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
2112 cinode->oplock = CIFS_CACHE_RW_FLG;
2113 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
2114 &cinode->vfs_inode);
2115 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
2116 cinode->oplock = CIFS_CACHE_READ_FLG;
2117 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
2118 &cinode->vfs_inode);
2119 } else
2120 cinode->oplock = 0;
2121 }
2122
2123 static void
2124 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2125 unsigned int epoch, bool *purge_cache)
2126 {
2127 char message[5] = {0};
2128
2129 oplock &= 0xFF;
2130 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2131 return;
2132
2133 cinode->oplock = 0;
2134 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
2135 cinode->oplock |= CIFS_CACHE_READ_FLG;
2136 strcat(message, "R");
2137 }
2138 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
2139 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
2140 strcat(message, "H");
2141 }
2142 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
2143 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
2144 strcat(message, "W");
2145 }
2146 if (!cinode->oplock)
2147 strcat(message, "None");
2148 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
2149 &cinode->vfs_inode);
2150 }
2151
2152 static void
2153 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2154 unsigned int epoch, bool *purge_cache)
2155 {
2156 unsigned int old_oplock = cinode->oplock;
2157
2158 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
2159
2160 if (purge_cache) {
2161 *purge_cache = false;
2162 if (old_oplock == CIFS_CACHE_READ_FLG) {
2163 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
2164 (epoch - cinode->epoch > 0))
2165 *purge_cache = true;
2166 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2167 (epoch - cinode->epoch > 1))
2168 *purge_cache = true;
2169 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2170 (epoch - cinode->epoch > 1))
2171 *purge_cache = true;
2172 else if (cinode->oplock == 0 &&
2173 (epoch - cinode->epoch > 0))
2174 *purge_cache = true;
2175 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
2176 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2177 (epoch - cinode->epoch > 0))
2178 *purge_cache = true;
2179 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2180 (epoch - cinode->epoch > 1))
2181 *purge_cache = true;
2182 }
2183 cinode->epoch = epoch;
2184 }
2185 }
2186
2187 static bool
2188 smb2_is_read_op(__u32 oplock)
2189 {
2190 return oplock == SMB2_OPLOCK_LEVEL_II;
2191 }
2192
2193 static bool
2194 smb21_is_read_op(__u32 oplock)
2195 {
2196 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
2197 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
2198 }
2199
2200 static __le32
2201 map_oplock_to_lease(u8 oplock)
2202 {
2203 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
2204 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
2205 else if (oplock == SMB2_OPLOCK_LEVEL_II)
2206 return SMB2_LEASE_READ_CACHING;
2207 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
2208 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
2209 SMB2_LEASE_WRITE_CACHING;
2210 return 0;
2211 }
2212
2213 static char *
2214 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
2215 {
2216 struct create_lease *buf;
2217
2218 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
2219 if (!buf)
2220 return NULL;
2221
2222 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
2223 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
2224 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2225
2226 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2227 (struct create_lease, lcontext));
2228 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
2229 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2230 (struct create_lease, Name));
2231 buf->ccontext.NameLength = cpu_to_le16(4);
2232 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
2233 buf->Name[0] = 'R';
2234 buf->Name[1] = 'q';
2235 buf->Name[2] = 'L';
2236 buf->Name[3] = 's';
2237 return (char *)buf;
2238 }
2239
2240 static char *
2241 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
2242 {
2243 struct create_lease_v2 *buf;
2244
2245 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
2246 if (!buf)
2247 return NULL;
2248
2249 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
2250 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
2251 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2252
2253 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2254 (struct create_lease_v2, lcontext));
2255 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
2256 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2257 (struct create_lease_v2, Name));
2258 buf->ccontext.NameLength = cpu_to_le16(4);
2259 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
2260 buf->Name[0] = 'R';
2261 buf->Name[1] = 'q';
2262 buf->Name[2] = 'L';
2263 buf->Name[3] = 's';
2264 return (char *)buf;
2265 }
2266
2267 static __u8
2268 smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
2269 {
2270 struct create_lease *lc = (struct create_lease *)buf;
2271
2272 *epoch = 0; /* not used */
2273 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2274 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2275 return le32_to_cpu(lc->lcontext.LeaseState);
2276 }
2277
2278 static __u8
2279 smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
2280 {
2281 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
2282
2283 *epoch = le16_to_cpu(lc->lcontext.Epoch);
2284 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2285 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2286 if (lease_key)
2287 memcpy(lease_key, &lc->lcontext.LeaseKeyLow,
2288 SMB2_LEASE_KEY_SIZE);
2289 return le32_to_cpu(lc->lcontext.LeaseState);
2290 }
2291
2292 static unsigned int
2293 smb2_wp_retry_size(struct inode *inode)
2294 {
2295 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
2296 SMB2_MAX_BUFFER_SIZE);
2297 }
2298
2299 static bool
2300 smb2_dir_needs_close(struct cifsFileInfo *cfile)
2301 {
2302 return !cfile->invalidHandle;
2303 }
2304
2305 static void
2306 fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
2307 struct smb_rqst *old_rq)
2308 {
2309 struct smb2_sync_hdr *shdr =
2310 (struct smb2_sync_hdr *)old_rq->rq_iov[0].iov_base;
2311
2312 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
2313 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
2314 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
2315 tr_hdr->Flags = cpu_to_le16(0x01);
2316 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2317 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
2318 }
2319
2320 /* We can not use the normal sg_set_buf() as we will sometimes pass a
2321 * stack object as buf.
2322 */
2323 static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
2324 unsigned int buflen)
2325 {
2326 sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
2327 }
2328
2329 /* Assumes:
2330 * rqst->rq_iov[0] is transform header
2331 * rqst->rq_iov[1+] data to be encrypted/decrypted
2332 */
2333 static struct scatterlist *
2334 init_sg(struct smb_rqst *rqst, u8 *sign)
2335 {
2336 unsigned int sg_len = rqst->rq_nvec + rqst->rq_npages + 1;
2337 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
2338 struct scatterlist *sg;
2339 unsigned int i;
2340 unsigned int j;
2341
2342 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
2343 if (!sg)
2344 return NULL;
2345
2346 sg_init_table(sg, sg_len);
2347 smb2_sg_set_buf(&sg[0], rqst->rq_iov[0].iov_base + 20, assoc_data_len);
2348 for (i = 1; i < rqst->rq_nvec; i++)
2349 smb2_sg_set_buf(&sg[i], rqst->rq_iov[i].iov_base,
2350 rqst->rq_iov[i].iov_len);
2351 for (j = 0; i < sg_len - 1; i++, j++) {
2352 unsigned int len, offset;
2353
2354 rqst_page_get_length(rqst, j, &len, &offset);
2355 sg_set_page(&sg[i], rqst->rq_pages[j], len, offset);
2356 }
2357 smb2_sg_set_buf(&sg[sg_len - 1], sign, SMB2_SIGNATURE_SIZE);
2358 return sg;
2359 }
2360
2361 static int
2362 smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
2363 {
2364 struct cifs_ses *ses;
2365 u8 *ses_enc_key;
2366
2367 spin_lock(&cifs_tcp_ses_lock);
2368 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
2369 if (ses->Suid != ses_id)
2370 continue;
2371 ses_enc_key = enc ? ses->smb3encryptionkey :
2372 ses->smb3decryptionkey;
2373 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
2374 spin_unlock(&cifs_tcp_ses_lock);
2375 return 0;
2376 }
2377 spin_unlock(&cifs_tcp_ses_lock);
2378
2379 return 1;
2380 }
2381 /*
2382 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
2383 * iov[0] - transform header (associate data),
2384 * iov[1-N] - SMB2 header and pages - data to encrypt.
2385 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
2386 * untouched.
2387 */
2388 static int
2389 crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc)
2390 {
2391 struct smb2_transform_hdr *tr_hdr =
2392 (struct smb2_transform_hdr *)rqst->rq_iov[0].iov_base;
2393 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
2394 int rc = 0;
2395 struct scatterlist *sg;
2396 u8 sign[SMB2_SIGNATURE_SIZE] = {};
2397 u8 key[SMB3_SIGN_KEY_SIZE];
2398 struct aead_request *req;
2399 char *iv;
2400 unsigned int iv_len;
2401 DECLARE_CRYPTO_WAIT(wait);
2402 struct crypto_aead *tfm;
2403 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2404
2405 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
2406 if (rc) {
2407 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
2408 enc ? "en" : "de");
2409 return 0;
2410 }
2411
2412 rc = smb3_crypto_aead_allocate(server);
2413 if (rc) {
2414 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
2415 return rc;
2416 }
2417
2418 tfm = enc ? server->secmech.ccmaesencrypt :
2419 server->secmech.ccmaesdecrypt;
2420 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
2421 if (rc) {
2422 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
2423 return rc;
2424 }
2425
2426 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
2427 if (rc) {
2428 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
2429 return rc;
2430 }
2431
2432 req = aead_request_alloc(tfm, GFP_KERNEL);
2433 if (!req) {
2434 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
2435 return -ENOMEM;
2436 }
2437
2438 if (!enc) {
2439 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
2440 crypt_len += SMB2_SIGNATURE_SIZE;
2441 }
2442
2443 sg = init_sg(rqst, sign);
2444 if (!sg) {
2445 cifs_dbg(VFS, "%s: Failed to init sg", __func__);
2446 rc = -ENOMEM;
2447 goto free_req;
2448 }
2449
2450 iv_len = crypto_aead_ivsize(tfm);
2451 iv = kzalloc(iv_len, GFP_KERNEL);
2452 if (!iv) {
2453 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
2454 rc = -ENOMEM;
2455 goto free_sg;
2456 }
2457 iv[0] = 3;
2458 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2459
2460 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
2461 aead_request_set_ad(req, assoc_data_len);
2462
2463 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
2464 crypto_req_done, &wait);
2465
2466 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
2467 : crypto_aead_decrypt(req), &wait);
2468
2469 if (!rc && enc)
2470 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
2471
2472 kfree(iv);
2473 free_sg:
2474 kfree(sg);
2475 free_req:
2476 kfree(req);
2477 return rc;
2478 }
2479
2480 static int
2481 smb3_init_transform_rq(struct TCP_Server_Info *server, struct smb_rqst *new_rq,
2482 struct smb_rqst *old_rq)
2483 {
2484 struct kvec *iov;
2485 struct page **pages;
2486 struct smb2_transform_hdr *tr_hdr;
2487 unsigned int npages = old_rq->rq_npages;
2488 unsigned int orig_len;
2489 int i;
2490 int rc = -ENOMEM;
2491
2492 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
2493 if (!pages)
2494 return rc;
2495
2496 new_rq->rq_pages = pages;
2497 new_rq->rq_offset = old_rq->rq_offset;
2498 new_rq->rq_npages = old_rq->rq_npages;
2499 new_rq->rq_pagesz = old_rq->rq_pagesz;
2500 new_rq->rq_tailsz = old_rq->rq_tailsz;
2501
2502 for (i = 0; i < npages; i++) {
2503 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2504 if (!pages[i])
2505 goto err_free_pages;
2506 }
2507
2508 iov = kmalloc_array(old_rq->rq_nvec + 1, sizeof(struct kvec),
2509 GFP_KERNEL);
2510 if (!iov)
2511 goto err_free_pages;
2512
2513 /* copy all iovs from the old */
2514 memcpy(&iov[1], &old_rq->rq_iov[0],
2515 sizeof(struct kvec) * old_rq->rq_nvec);
2516
2517 new_rq->rq_iov = iov;
2518 new_rq->rq_nvec = old_rq->rq_nvec + 1;
2519
2520 tr_hdr = kmalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL);
2521 if (!tr_hdr)
2522 goto err_free_iov;
2523
2524 orig_len = smb2_rqst_len(old_rq, false);
2525
2526 /* fill the 2nd iov with a transform header */
2527 fill_transform_hdr(tr_hdr, orig_len, old_rq);
2528 new_rq->rq_iov[0].iov_base = tr_hdr;
2529 new_rq->rq_iov[0].iov_len = sizeof(struct smb2_transform_hdr);
2530
2531 /* copy pages form the old */
2532 for (i = 0; i < npages; i++) {
2533 char *dst, *src;
2534 unsigned int offset, len;
2535
2536 rqst_page_get_length(new_rq, i, &len, &offset);
2537
2538 dst = (char *) kmap(new_rq->rq_pages[i]) + offset;
2539 src = (char *) kmap(old_rq->rq_pages[i]) + offset;
2540
2541 memcpy(dst, src, len);
2542 kunmap(new_rq->rq_pages[i]);
2543 kunmap(old_rq->rq_pages[i]);
2544 }
2545
2546 rc = crypt_message(server, new_rq, 1);
2547 cifs_dbg(FYI, "encrypt message returned %d", rc);
2548 if (rc)
2549 goto err_free_tr_hdr;
2550
2551 return rc;
2552
2553 err_free_tr_hdr:
2554 kfree(tr_hdr);
2555 err_free_iov:
2556 kfree(iov);
2557 err_free_pages:
2558 for (i = i - 1; i >= 0; i--)
2559 put_page(pages[i]);
2560 kfree(pages);
2561 return rc;
2562 }
2563
2564 static void
2565 smb3_free_transform_rq(struct smb_rqst *rqst)
2566 {
2567 int i = rqst->rq_npages - 1;
2568
2569 for (; i >= 0; i--)
2570 put_page(rqst->rq_pages[i]);
2571 kfree(rqst->rq_pages);
2572 /* free transform header */
2573 kfree(rqst->rq_iov[0].iov_base);
2574 kfree(rqst->rq_iov);
2575 }
2576
2577 static int
2578 smb3_is_transform_hdr(void *buf)
2579 {
2580 struct smb2_transform_hdr *trhdr = buf;
2581
2582 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
2583 }
2584
2585 static int
2586 decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
2587 unsigned int buf_data_size, struct page **pages,
2588 unsigned int npages, unsigned int page_data_size)
2589 {
2590 struct kvec iov[2];
2591 struct smb_rqst rqst = {NULL};
2592 int rc;
2593
2594 iov[0].iov_base = buf;
2595 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
2596 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
2597 iov[1].iov_len = buf_data_size;
2598
2599 rqst.rq_iov = iov;
2600 rqst.rq_nvec = 2;
2601 rqst.rq_pages = pages;
2602 rqst.rq_npages = npages;
2603 rqst.rq_pagesz = PAGE_SIZE;
2604 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
2605
2606 rc = crypt_message(server, &rqst, 0);
2607 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
2608
2609 if (rc)
2610 return rc;
2611
2612 memmove(buf, iov[1].iov_base, buf_data_size);
2613
2614 server->total_read = buf_data_size + page_data_size;
2615
2616 return rc;
2617 }
2618
2619 static int
2620 read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
2621 unsigned int npages, unsigned int len)
2622 {
2623 int i;
2624 int length;
2625
2626 for (i = 0; i < npages; i++) {
2627 struct page *page = pages[i];
2628 size_t n;
2629
2630 n = len;
2631 if (len >= PAGE_SIZE) {
2632 /* enough data to fill the page */
2633 n = PAGE_SIZE;
2634 len -= n;
2635 } else {
2636 zero_user(page, len, PAGE_SIZE - len);
2637 len = 0;
2638 }
2639 length = cifs_read_page_from_socket(server, page, 0, n);
2640 if (length < 0)
2641 return length;
2642 server->total_read += length;
2643 }
2644
2645 return 0;
2646 }
2647
2648 static int
2649 init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
2650 unsigned int cur_off, struct bio_vec **page_vec)
2651 {
2652 struct bio_vec *bvec;
2653 int i;
2654
2655 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
2656 if (!bvec)
2657 return -ENOMEM;
2658
2659 for (i = 0; i < npages; i++) {
2660 bvec[i].bv_page = pages[i];
2661 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
2662 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
2663 data_size -= bvec[i].bv_len;
2664 }
2665
2666 if (data_size != 0) {
2667 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
2668 kfree(bvec);
2669 return -EIO;
2670 }
2671
2672 *page_vec = bvec;
2673 return 0;
2674 }
2675
2676 static int
2677 handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
2678 char *buf, unsigned int buf_len, struct page **pages,
2679 unsigned int npages, unsigned int page_data_size)
2680 {
2681 unsigned int data_offset;
2682 unsigned int data_len;
2683 unsigned int cur_off;
2684 unsigned int cur_page_idx;
2685 unsigned int pad_len;
2686 struct cifs_readdata *rdata = mid->callback_data;
2687 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2688 struct bio_vec *bvec = NULL;
2689 struct iov_iter iter;
2690 struct kvec iov;
2691 int length;
2692 bool use_rdma_mr = false;
2693
2694 if (shdr->Command != SMB2_READ) {
2695 cifs_dbg(VFS, "only big read responses are supported\n");
2696 return -ENOTSUPP;
2697 }
2698
2699 if (server->ops->is_session_expired &&
2700 server->ops->is_session_expired(buf)) {
2701 cifs_reconnect(server);
2702 wake_up(&server->response_q);
2703 return -1;
2704 }
2705
2706 if (server->ops->is_status_pending &&
2707 server->ops->is_status_pending(buf, server, 0))
2708 return -1;
2709
2710 rdata->result = server->ops->map_error(buf, false);
2711 if (rdata->result != 0) {
2712 cifs_dbg(FYI, "%s: server returned error %d\n",
2713 __func__, rdata->result);
2714 dequeue_mid(mid, rdata->result);
2715 return 0;
2716 }
2717
2718 data_offset = server->ops->read_data_offset(buf);
2719 #ifdef CONFIG_CIFS_SMB_DIRECT
2720 use_rdma_mr = rdata->mr;
2721 #endif
2722 data_len = server->ops->read_data_length(buf, use_rdma_mr);
2723
2724 if (data_offset < server->vals->read_rsp_size) {
2725 /*
2726 * win2k8 sometimes sends an offset of 0 when the read
2727 * is beyond the EOF. Treat it as if the data starts just after
2728 * the header.
2729 */
2730 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
2731 __func__, data_offset);
2732 data_offset = server->vals->read_rsp_size;
2733 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
2734 /* data_offset is beyond the end of smallbuf */
2735 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
2736 __func__, data_offset);
2737 rdata->result = -EIO;
2738 dequeue_mid(mid, rdata->result);
2739 return 0;
2740 }
2741
2742 pad_len = data_offset - server->vals->read_rsp_size;
2743
2744 if (buf_len <= data_offset) {
2745 /* read response payload is in pages */
2746 cur_page_idx = pad_len / PAGE_SIZE;
2747 cur_off = pad_len % PAGE_SIZE;
2748
2749 if (cur_page_idx != 0) {
2750 /* data offset is beyond the 1st page of response */
2751 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
2752 __func__, data_offset);
2753 rdata->result = -EIO;
2754 dequeue_mid(mid, rdata->result);
2755 return 0;
2756 }
2757
2758 if (data_len > page_data_size - pad_len) {
2759 /* data_len is corrupt -- discard frame */
2760 rdata->result = -EIO;
2761 dequeue_mid(mid, rdata->result);
2762 return 0;
2763 }
2764
2765 rdata->result = init_read_bvec(pages, npages, page_data_size,
2766 cur_off, &bvec);
2767 if (rdata->result != 0) {
2768 dequeue_mid(mid, rdata->result);
2769 return 0;
2770 }
2771
2772 iov_iter_bvec(&iter, WRITE | ITER_BVEC, bvec, npages, data_len);
2773 } else if (buf_len >= data_offset + data_len) {
2774 /* read response payload is in buf */
2775 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
2776 iov.iov_base = buf + data_offset;
2777 iov.iov_len = data_len;
2778 iov_iter_kvec(&iter, WRITE | ITER_KVEC, &iov, 1, data_len);
2779 } else {
2780 /* read response payload cannot be in both buf and pages */
2781 WARN_ONCE(1, "buf can not contain only a part of read data");
2782 rdata->result = -EIO;
2783 dequeue_mid(mid, rdata->result);
2784 return 0;
2785 }
2786
2787 /* set up first iov for signature check */
2788 rdata->iov[0].iov_base = buf;
2789 rdata->iov[0].iov_len = 4;
2790 rdata->iov[1].iov_base = buf + 4;
2791 rdata->iov[1].iov_len = server->vals->read_rsp_size - 4;
2792 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
2793 rdata->iov[0].iov_base, server->vals->read_rsp_size);
2794
2795 length = rdata->copy_into_pages(server, rdata, &iter);
2796
2797 kfree(bvec);
2798
2799 if (length < 0)
2800 return length;
2801
2802 dequeue_mid(mid, false);
2803 return length;
2804 }
2805
2806 static int
2807 receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2808 {
2809 char *buf = server->smallbuf;
2810 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2811 unsigned int npages;
2812 struct page **pages;
2813 unsigned int len;
2814 unsigned int buflen = server->pdu_size;
2815 int rc;
2816 int i = 0;
2817
2818 len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
2819 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
2820
2821 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
2822 if (rc < 0)
2823 return rc;
2824 server->total_read += rc;
2825
2826 len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
2827 server->vals->read_rsp_size;
2828 npages = DIV_ROUND_UP(len, PAGE_SIZE);
2829
2830 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
2831 if (!pages) {
2832 rc = -ENOMEM;
2833 goto discard_data;
2834 }
2835
2836 for (; i < npages; i++) {
2837 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2838 if (!pages[i]) {
2839 rc = -ENOMEM;
2840 goto discard_data;
2841 }
2842 }
2843
2844 /* read read data into pages */
2845 rc = read_data_into_pages(server, pages, npages, len);
2846 if (rc)
2847 goto free_pages;
2848
2849 rc = cifs_discard_remaining_data(server);
2850 if (rc)
2851 goto free_pages;
2852
2853 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
2854 pages, npages, len);
2855 if (rc)
2856 goto free_pages;
2857
2858 *mid = smb2_find_mid(server, buf);
2859 if (*mid == NULL)
2860 cifs_dbg(FYI, "mid not found\n");
2861 else {
2862 cifs_dbg(FYI, "mid found\n");
2863 (*mid)->decrypted = true;
2864 rc = handle_read_data(server, *mid, buf,
2865 server->vals->read_rsp_size,
2866 pages, npages, len);
2867 }
2868
2869 free_pages:
2870 for (i = i - 1; i >= 0; i--)
2871 put_page(pages[i]);
2872 kfree(pages);
2873 return rc;
2874 discard_data:
2875 cifs_discard_remaining_data(server);
2876 goto free_pages;
2877 }
2878
2879 static int
2880 receive_encrypted_standard(struct TCP_Server_Info *server,
2881 struct mid_q_entry **mid)
2882 {
2883 int length;
2884 char *buf = server->smallbuf;
2885 unsigned int pdu_length = server->pdu_size;
2886 unsigned int buf_size;
2887 struct mid_q_entry *mid_entry;
2888
2889 /* switch to large buffer if too big for a small one */
2890 if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
2891 server->large_buf = true;
2892 memcpy(server->bigbuf, buf, server->total_read);
2893 buf = server->bigbuf;
2894 }
2895
2896 /* now read the rest */
2897 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
2898 pdu_length - HEADER_SIZE(server) + 1);
2899 if (length < 0)
2900 return length;
2901 server->total_read += length;
2902
2903 buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
2904 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
2905 if (length)
2906 return length;
2907
2908 mid_entry = smb2_find_mid(server, buf);
2909 if (mid_entry == NULL)
2910 cifs_dbg(FYI, "mid not found\n");
2911 else {
2912 cifs_dbg(FYI, "mid found\n");
2913 mid_entry->decrypted = true;
2914 }
2915
2916 *mid = mid_entry;
2917
2918 if (mid_entry && mid_entry->handle)
2919 return mid_entry->handle(server, mid_entry);
2920
2921 return cifs_handle_standard(server, mid_entry);
2922 }
2923
2924 static int
2925 smb3_receive_transform(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2926 {
2927 char *buf = server->smallbuf;
2928 unsigned int pdu_length = server->pdu_size;
2929 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2930 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2931
2932 if (pdu_length < sizeof(struct smb2_transform_hdr) +
2933 sizeof(struct smb2_sync_hdr)) {
2934 cifs_dbg(VFS, "Transform message is too small (%u)\n",
2935 pdu_length);
2936 cifs_reconnect(server);
2937 wake_up(&server->response_q);
2938 return -ECONNABORTED;
2939 }
2940
2941 if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
2942 cifs_dbg(VFS, "Transform message is broken\n");
2943 cifs_reconnect(server);
2944 wake_up(&server->response_q);
2945 return -ECONNABORTED;
2946 }
2947
2948 if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server))
2949 return receive_encrypted_read(server, mid);
2950
2951 return receive_encrypted_standard(server, mid);
2952 }
2953
2954 int
2955 smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
2956 {
2957 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
2958
2959 return handle_read_data(server, mid, buf, server->pdu_size,
2960 NULL, 0, 0);
2961 }
2962
2963 static int
2964 smb2_next_header(char *buf)
2965 {
2966 struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf;
2967 struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
2968
2969 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM)
2970 return sizeof(struct smb2_transform_hdr) +
2971 le32_to_cpu(t_hdr->OriginalMessageSize);
2972
2973 return le32_to_cpu(hdr->NextCommand);
2974 }
2975
2976 struct smb_version_operations smb20_operations = {
2977 .compare_fids = smb2_compare_fids,
2978 .setup_request = smb2_setup_request,
2979 .setup_async_request = smb2_setup_async_request,
2980 .check_receive = smb2_check_receive,
2981 .add_credits = smb2_add_credits,
2982 .set_credits = smb2_set_credits,
2983 .get_credits_field = smb2_get_credits_field,
2984 .get_credits = smb2_get_credits,
2985 .wait_mtu_credits = cifs_wait_mtu_credits,
2986 .get_next_mid = smb2_get_next_mid,
2987 .read_data_offset = smb2_read_data_offset,
2988 .read_data_length = smb2_read_data_length,
2989 .map_error = map_smb2_to_linux_error,
2990 .find_mid = smb2_find_mid,
2991 .check_message = smb2_check_message,
2992 .dump_detail = smb2_dump_detail,
2993 .clear_stats = smb2_clear_stats,
2994 .print_stats = smb2_print_stats,
2995 .is_oplock_break = smb2_is_valid_oplock_break,
2996 .handle_cancelled_mid = smb2_handle_cancelled_mid,
2997 .downgrade_oplock = smb2_downgrade_oplock,
2998 .need_neg = smb2_need_neg,
2999 .negotiate = smb2_negotiate,
3000 .negotiate_wsize = smb2_negotiate_wsize,
3001 .negotiate_rsize = smb2_negotiate_rsize,
3002 .sess_setup = SMB2_sess_setup,
3003 .logoff = SMB2_logoff,
3004 .tree_connect = SMB2_tcon,
3005 .tree_disconnect = SMB2_tdis,
3006 .qfs_tcon = smb2_qfs_tcon,
3007 .is_path_accessible = smb2_is_path_accessible,
3008 .can_echo = smb2_can_echo,
3009 .echo = SMB2_echo,
3010 .query_path_info = smb2_query_path_info,
3011 .get_srv_inum = smb2_get_srv_inum,
3012 .query_file_info = smb2_query_file_info,
3013 .set_path_size = smb2_set_path_size,
3014 .set_file_size = smb2_set_file_size,
3015 .set_file_info = smb2_set_file_info,
3016 .set_compression = smb2_set_compression,
3017 .mkdir = smb2_mkdir,
3018 .mkdir_setinfo = smb2_mkdir_setinfo,
3019 .rmdir = smb2_rmdir,
3020 .unlink = smb2_unlink,
3021 .rename = smb2_rename_path,
3022 .create_hardlink = smb2_create_hardlink,
3023 .query_symlink = smb2_query_symlink,
3024 .query_mf_symlink = smb3_query_mf_symlink,
3025 .create_mf_symlink = smb3_create_mf_symlink,
3026 .open = smb2_open_file,
3027 .set_fid = smb2_set_fid,
3028 .close = smb2_close_file,
3029 .flush = smb2_flush_file,
3030 .async_readv = smb2_async_readv,
3031 .async_writev = smb2_async_writev,
3032 .sync_read = smb2_sync_read,
3033 .sync_write = smb2_sync_write,
3034 .query_dir_first = smb2_query_dir_first,
3035 .query_dir_next = smb2_query_dir_next,
3036 .close_dir = smb2_close_dir,
3037 .calc_smb_size = smb2_calc_size,
3038 .is_status_pending = smb2_is_status_pending,
3039 .is_session_expired = smb2_is_session_expired,
3040 .oplock_response = smb2_oplock_response,
3041 .queryfs = smb2_queryfs,
3042 .mand_lock = smb2_mand_lock,
3043 .mand_unlock_range = smb2_unlock_range,
3044 .push_mand_locks = smb2_push_mandatory_locks,
3045 .get_lease_key = smb2_get_lease_key,
3046 .set_lease_key = smb2_set_lease_key,
3047 .new_lease_key = smb2_new_lease_key,
3048 .calc_signature = smb2_calc_signature,
3049 .is_read_op = smb2_is_read_op,
3050 .set_oplock_level = smb2_set_oplock_level,
3051 .create_lease_buf = smb2_create_lease_buf,
3052 .parse_lease_buf = smb2_parse_lease_buf,
3053 .copychunk_range = smb2_copychunk_range,
3054 .wp_retry_size = smb2_wp_retry_size,
3055 .dir_needs_close = smb2_dir_needs_close,
3056 .get_dfs_refer = smb2_get_dfs_refer,
3057 .select_sectype = smb2_select_sectype,
3058 #ifdef CONFIG_CIFS_XATTR
3059 .query_all_EAs = smb2_query_eas,
3060 .set_EA = smb2_set_ea,
3061 #endif /* CIFS_XATTR */
3062 #ifdef CONFIG_CIFS_ACL
3063 .get_acl = get_smb2_acl,
3064 .get_acl_by_fid = get_smb2_acl_by_fid,
3065 .set_acl = set_smb2_acl,
3066 #endif /* CIFS_ACL */
3067 .next_header = smb2_next_header,
3068 };
3069
3070 struct smb_version_operations smb21_operations = {
3071 .compare_fids = smb2_compare_fids,
3072 .setup_request = smb2_setup_request,
3073 .setup_async_request = smb2_setup_async_request,
3074 .check_receive = smb2_check_receive,
3075 .add_credits = smb2_add_credits,
3076 .set_credits = smb2_set_credits,
3077 .get_credits_field = smb2_get_credits_field,
3078 .get_credits = smb2_get_credits,
3079 .wait_mtu_credits = smb2_wait_mtu_credits,
3080 .get_next_mid = smb2_get_next_mid,
3081 .read_data_offset = smb2_read_data_offset,
3082 .read_data_length = smb2_read_data_length,
3083 .map_error = map_smb2_to_linux_error,
3084 .find_mid = smb2_find_mid,
3085 .check_message = smb2_check_message,
3086 .dump_detail = smb2_dump_detail,
3087 .clear_stats = smb2_clear_stats,
3088 .print_stats = smb2_print_stats,
3089 .is_oplock_break = smb2_is_valid_oplock_break,
3090 .handle_cancelled_mid = smb2_handle_cancelled_mid,
3091 .downgrade_oplock = smb2_downgrade_oplock,
3092 .need_neg = smb2_need_neg,
3093 .negotiate = smb2_negotiate,
3094 .negotiate_wsize = smb2_negotiate_wsize,
3095 .negotiate_rsize = smb2_negotiate_rsize,
3096 .sess_setup = SMB2_sess_setup,
3097 .logoff = SMB2_logoff,
3098 .tree_connect = SMB2_tcon,
3099 .tree_disconnect = SMB2_tdis,
3100 .qfs_tcon = smb2_qfs_tcon,
3101 .is_path_accessible = smb2_is_path_accessible,
3102 .can_echo = smb2_can_echo,
3103 .echo = SMB2_echo,
3104 .query_path_info = smb2_query_path_info,
3105 .get_srv_inum = smb2_get_srv_inum,
3106 .query_file_info = smb2_query_file_info,
3107 .set_path_size = smb2_set_path_size,
3108 .set_file_size = smb2_set_file_size,
3109 .set_file_info = smb2_set_file_info,
3110 .set_compression = smb2_set_compression,
3111 .mkdir = smb2_mkdir,
3112 .mkdir_setinfo = smb2_mkdir_setinfo,
3113 .rmdir = smb2_rmdir,
3114 .unlink = smb2_unlink,
3115 .rename = smb2_rename_path,
3116 .create_hardlink = smb2_create_hardlink,
3117 .query_symlink = smb2_query_symlink,
3118 .query_mf_symlink = smb3_query_mf_symlink,
3119 .create_mf_symlink = smb3_create_mf_symlink,
3120 .open = smb2_open_file,
3121 .set_fid = smb2_set_fid,
3122 .close = smb2_close_file,
3123 .flush = smb2_flush_file,
3124 .async_readv = smb2_async_readv,
3125 .async_writev = smb2_async_writev,
3126 .sync_read = smb2_sync_read,
3127 .sync_write = smb2_sync_write,
3128 .query_dir_first = smb2_query_dir_first,
3129 .query_dir_next = smb2_query_dir_next,
3130 .close_dir = smb2_close_dir,
3131 .calc_smb_size = smb2_calc_size,
3132 .is_status_pending = smb2_is_status_pending,
3133 .is_session_expired = smb2_is_session_expired,
3134 .oplock_response = smb2_oplock_response,
3135 .queryfs = smb2_queryfs,
3136 .mand_lock = smb2_mand_lock,
3137 .mand_unlock_range = smb2_unlock_range,
3138 .push_mand_locks = smb2_push_mandatory_locks,
3139 .get_lease_key = smb2_get_lease_key,
3140 .set_lease_key = smb2_set_lease_key,
3141 .new_lease_key = smb2_new_lease_key,
3142 .calc_signature = smb2_calc_signature,
3143 .is_read_op = smb21_is_read_op,
3144 .set_oplock_level = smb21_set_oplock_level,
3145 .create_lease_buf = smb2_create_lease_buf,
3146 .parse_lease_buf = smb2_parse_lease_buf,
3147 .copychunk_range = smb2_copychunk_range,
3148 .wp_retry_size = smb2_wp_retry_size,
3149 .dir_needs_close = smb2_dir_needs_close,
3150 .enum_snapshots = smb3_enum_snapshots,
3151 .get_dfs_refer = smb2_get_dfs_refer,
3152 .select_sectype = smb2_select_sectype,
3153 #ifdef CONFIG_CIFS_XATTR
3154 .query_all_EAs = smb2_query_eas,
3155 .set_EA = smb2_set_ea,
3156 #endif /* CIFS_XATTR */
3157 #ifdef CONFIG_CIFS_ACL
3158 .get_acl = get_smb2_acl,
3159 .get_acl_by_fid = get_smb2_acl_by_fid,
3160 .set_acl = set_smb2_acl,
3161 #endif /* CIFS_ACL */
3162 .next_header = smb2_next_header,
3163 };
3164
3165 struct smb_version_operations smb30_operations = {
3166 .compare_fids = smb2_compare_fids,
3167 .setup_request = smb2_setup_request,
3168 .setup_async_request = smb2_setup_async_request,
3169 .check_receive = smb2_check_receive,
3170 .add_credits = smb2_add_credits,
3171 .set_credits = smb2_set_credits,
3172 .get_credits_field = smb2_get_credits_field,
3173 .get_credits = smb2_get_credits,
3174 .wait_mtu_credits = smb2_wait_mtu_credits,
3175 .get_next_mid = smb2_get_next_mid,
3176 .read_data_offset = smb2_read_data_offset,
3177 .read_data_length = smb2_read_data_length,
3178 .map_error = map_smb2_to_linux_error,
3179 .find_mid = smb2_find_mid,
3180 .check_message = smb2_check_message,
3181 .dump_detail = smb2_dump_detail,
3182 .clear_stats = smb2_clear_stats,
3183 .print_stats = smb2_print_stats,
3184 .dump_share_caps = smb2_dump_share_caps,
3185 .is_oplock_break = smb2_is_valid_oplock_break,
3186 .handle_cancelled_mid = smb2_handle_cancelled_mid,
3187 .downgrade_oplock = smb2_downgrade_oplock,
3188 .need_neg = smb2_need_neg,
3189 .negotiate = smb2_negotiate,
3190 .negotiate_wsize = smb2_negotiate_wsize,
3191 .negotiate_rsize = smb2_negotiate_rsize,
3192 .sess_setup = SMB2_sess_setup,
3193 .logoff = SMB2_logoff,
3194 .tree_connect = SMB2_tcon,
3195 .tree_disconnect = SMB2_tdis,
3196 .qfs_tcon = smb3_qfs_tcon,
3197 .is_path_accessible = smb2_is_path_accessible,
3198 .can_echo = smb2_can_echo,
3199 .echo = SMB2_echo,
3200 .query_path_info = smb2_query_path_info,
3201 .get_srv_inum = smb2_get_srv_inum,
3202 .query_file_info = smb2_query_file_info,
3203 .set_path_size = smb2_set_path_size,
3204 .set_file_size = smb2_set_file_size,
3205 .set_file_info = smb2_set_file_info,
3206 .set_compression = smb2_set_compression,
3207 .mkdir = smb2_mkdir,
3208 .mkdir_setinfo = smb2_mkdir_setinfo,
3209 .rmdir = smb2_rmdir,
3210 .unlink = smb2_unlink,
3211 .rename = smb2_rename_path,
3212 .create_hardlink = smb2_create_hardlink,
3213 .query_symlink = smb2_query_symlink,
3214 .query_mf_symlink = smb3_query_mf_symlink,
3215 .create_mf_symlink = smb3_create_mf_symlink,
3216 .open = smb2_open_file,
3217 .set_fid = smb2_set_fid,
3218 .close = smb2_close_file,
3219 .flush = smb2_flush_file,
3220 .async_readv = smb2_async_readv,
3221 .async_writev = smb2_async_writev,
3222 .sync_read = smb2_sync_read,
3223 .sync_write = smb2_sync_write,
3224 .query_dir_first = smb2_query_dir_first,
3225 .query_dir_next = smb2_query_dir_next,
3226 .close_dir = smb2_close_dir,
3227 .calc_smb_size = smb2_calc_size,
3228 .is_status_pending = smb2_is_status_pending,
3229 .is_session_expired = smb2_is_session_expired,
3230 .oplock_response = smb2_oplock_response,
3231 .queryfs = smb2_queryfs,
3232 .mand_lock = smb2_mand_lock,
3233 .mand_unlock_range = smb2_unlock_range,
3234 .push_mand_locks = smb2_push_mandatory_locks,
3235 .get_lease_key = smb2_get_lease_key,
3236 .set_lease_key = smb2_set_lease_key,
3237 .new_lease_key = smb2_new_lease_key,
3238 .generate_signingkey = generate_smb30signingkey,
3239 .calc_signature = smb3_calc_signature,
3240 .set_integrity = smb3_set_integrity,
3241 .is_read_op = smb21_is_read_op,
3242 .set_oplock_level = smb3_set_oplock_level,
3243 .create_lease_buf = smb3_create_lease_buf,
3244 .parse_lease_buf = smb3_parse_lease_buf,
3245 .copychunk_range = smb2_copychunk_range,
3246 .duplicate_extents = smb2_duplicate_extents,
3247 .validate_negotiate = smb3_validate_negotiate,
3248 .wp_retry_size = smb2_wp_retry_size,
3249 .dir_needs_close = smb2_dir_needs_close,
3250 .fallocate = smb3_fallocate,
3251 .enum_snapshots = smb3_enum_snapshots,
3252 .init_transform_rq = smb3_init_transform_rq,
3253 .free_transform_rq = smb3_free_transform_rq,
3254 .is_transform_hdr = smb3_is_transform_hdr,
3255 .receive_transform = smb3_receive_transform,
3256 .get_dfs_refer = smb2_get_dfs_refer,
3257 .select_sectype = smb2_select_sectype,
3258 #ifdef CONFIG_CIFS_XATTR
3259 .query_all_EAs = smb2_query_eas,
3260 .set_EA = smb2_set_ea,
3261 #endif /* CIFS_XATTR */
3262 #ifdef CONFIG_CIFS_ACL
3263 .get_acl = get_smb2_acl,
3264 .get_acl_by_fid = get_smb2_acl_by_fid,
3265 .set_acl = set_smb2_acl,
3266 #endif /* CIFS_ACL */
3267 .next_header = smb2_next_header,
3268 };
3269
3270 #ifdef CONFIG_CIFS_SMB311
3271 struct smb_version_operations smb311_operations = {
3272 .compare_fids = smb2_compare_fids,
3273 .setup_request = smb2_setup_request,
3274 .setup_async_request = smb2_setup_async_request,
3275 .check_receive = smb2_check_receive,
3276 .add_credits = smb2_add_credits,
3277 .set_credits = smb2_set_credits,
3278 .get_credits_field = smb2_get_credits_field,
3279 .get_credits = smb2_get_credits,
3280 .wait_mtu_credits = smb2_wait_mtu_credits,
3281 .get_next_mid = smb2_get_next_mid,
3282 .read_data_offset = smb2_read_data_offset,
3283 .read_data_length = smb2_read_data_length,
3284 .map_error = map_smb2_to_linux_error,
3285 .find_mid = smb2_find_mid,
3286 .check_message = smb2_check_message,
3287 .dump_detail = smb2_dump_detail,
3288 .clear_stats = smb2_clear_stats,
3289 .print_stats = smb2_print_stats,
3290 .dump_share_caps = smb2_dump_share_caps,
3291 .is_oplock_break = smb2_is_valid_oplock_break,
3292 .handle_cancelled_mid = smb2_handle_cancelled_mid,
3293 .downgrade_oplock = smb2_downgrade_oplock,
3294 .need_neg = smb2_need_neg,
3295 .negotiate = smb2_negotiate,
3296 .negotiate_wsize = smb2_negotiate_wsize,
3297 .negotiate_rsize = smb2_negotiate_rsize,
3298 .sess_setup = SMB2_sess_setup,
3299 .logoff = SMB2_logoff,
3300 .tree_connect = SMB2_tcon,
3301 .tree_disconnect = SMB2_tdis,
3302 .qfs_tcon = smb3_qfs_tcon,
3303 .is_path_accessible = smb2_is_path_accessible,
3304 .can_echo = smb2_can_echo,
3305 .echo = SMB2_echo,
3306 .query_path_info = smb2_query_path_info,
3307 .get_srv_inum = smb2_get_srv_inum,
3308 .query_file_info = smb2_query_file_info,
3309 .set_path_size = smb2_set_path_size,
3310 .set_file_size = smb2_set_file_size,
3311 .set_file_info = smb2_set_file_info,
3312 .set_compression = smb2_set_compression,
3313 .mkdir = smb2_mkdir,
3314 .mkdir_setinfo = smb2_mkdir_setinfo,
3315 .posix_mkdir = smb311_posix_mkdir,
3316 .rmdir = smb2_rmdir,
3317 .unlink = smb2_unlink,
3318 .rename = smb2_rename_path,
3319 .create_hardlink = smb2_create_hardlink,
3320 .query_symlink = smb2_query_symlink,
3321 .query_mf_symlink = smb3_query_mf_symlink,
3322 .create_mf_symlink = smb3_create_mf_symlink,
3323 .open = smb2_open_file,
3324 .set_fid = smb2_set_fid,
3325 .close = smb2_close_file,
3326 .flush = smb2_flush_file,
3327 .async_readv = smb2_async_readv,
3328 .async_writev = smb2_async_writev,
3329 .sync_read = smb2_sync_read,
3330 .sync_write = smb2_sync_write,
3331 .query_dir_first = smb2_query_dir_first,
3332 .query_dir_next = smb2_query_dir_next,
3333 .close_dir = smb2_close_dir,
3334 .calc_smb_size = smb2_calc_size,
3335 .is_status_pending = smb2_is_status_pending,
3336 .is_session_expired = smb2_is_session_expired,
3337 .oplock_response = smb2_oplock_response,
3338 .queryfs = smb2_queryfs,
3339 .mand_lock = smb2_mand_lock,
3340 .mand_unlock_range = smb2_unlock_range,
3341 .push_mand_locks = smb2_push_mandatory_locks,
3342 .get_lease_key = smb2_get_lease_key,
3343 .set_lease_key = smb2_set_lease_key,
3344 .new_lease_key = smb2_new_lease_key,
3345 .generate_signingkey = generate_smb311signingkey,
3346 .calc_signature = smb3_calc_signature,
3347 .set_integrity = smb3_set_integrity,
3348 .is_read_op = smb21_is_read_op,
3349 .set_oplock_level = smb3_set_oplock_level,
3350 .create_lease_buf = smb3_create_lease_buf,
3351 .parse_lease_buf = smb3_parse_lease_buf,
3352 .copychunk_range = smb2_copychunk_range,
3353 .duplicate_extents = smb2_duplicate_extents,
3354 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
3355 .wp_retry_size = smb2_wp_retry_size,
3356 .dir_needs_close = smb2_dir_needs_close,
3357 .fallocate = smb3_fallocate,
3358 .enum_snapshots = smb3_enum_snapshots,
3359 .init_transform_rq = smb3_init_transform_rq,
3360 .free_transform_rq = smb3_free_transform_rq,
3361 .is_transform_hdr = smb3_is_transform_hdr,
3362 .receive_transform = smb3_receive_transform,
3363 .get_dfs_refer = smb2_get_dfs_refer,
3364 .select_sectype = smb2_select_sectype,
3365 #ifdef CONFIG_CIFS_XATTR
3366 .query_all_EAs = smb2_query_eas,
3367 .set_EA = smb2_set_ea,
3368 #endif /* CIFS_XATTR */
3369 .next_header = smb2_next_header,
3370 };
3371 #endif /* CIFS_SMB311 */
3372
3373 struct smb_version_values smb20_values = {
3374 .version_string = SMB20_VERSION_STRING,
3375 .protocol_id = SMB20_PROT_ID,
3376 .req_capabilities = 0, /* MBZ */
3377 .large_lock_type = 0,
3378 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3379 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3380 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3381 .header_size = sizeof(struct smb2_sync_hdr),
3382 .header_preamble_size = 0,
3383 .max_header_size = MAX_SMB2_HDR_SIZE,
3384 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3385 .lock_cmd = SMB2_LOCK,
3386 .cap_unix = 0,
3387 .cap_nt_find = SMB2_NT_FIND,
3388 .cap_large_files = SMB2_LARGE_FILES,
3389 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3390 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3391 .create_lease_size = sizeof(struct create_lease),
3392 };
3393
3394 struct smb_version_values smb21_values = {
3395 .version_string = SMB21_VERSION_STRING,
3396 .protocol_id = SMB21_PROT_ID,
3397 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
3398 .large_lock_type = 0,
3399 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3400 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3401 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3402 .header_size = sizeof(struct smb2_sync_hdr),
3403 .header_preamble_size = 0,
3404 .max_header_size = MAX_SMB2_HDR_SIZE,
3405 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3406 .lock_cmd = SMB2_LOCK,
3407 .cap_unix = 0,
3408 .cap_nt_find = SMB2_NT_FIND,
3409 .cap_large_files = SMB2_LARGE_FILES,
3410 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3411 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3412 .create_lease_size = sizeof(struct create_lease),
3413 };
3414
3415 struct smb_version_values smb3any_values = {
3416 .version_string = SMB3ANY_VERSION_STRING,
3417 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3418 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3419 .large_lock_type = 0,
3420 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3421 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3422 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3423 .header_size = sizeof(struct smb2_sync_hdr),
3424 .header_preamble_size = 0,
3425 .max_header_size = MAX_SMB2_HDR_SIZE,
3426 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3427 .lock_cmd = SMB2_LOCK,
3428 .cap_unix = 0,
3429 .cap_nt_find = SMB2_NT_FIND,
3430 .cap_large_files = SMB2_LARGE_FILES,
3431 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3432 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3433 .create_lease_size = sizeof(struct create_lease_v2),
3434 };
3435
3436 struct smb_version_values smbdefault_values = {
3437 .version_string = SMBDEFAULT_VERSION_STRING,
3438 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3439 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3440 .large_lock_type = 0,
3441 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3442 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3443 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3444 .header_size = sizeof(struct smb2_sync_hdr),
3445 .header_preamble_size = 0,
3446 .max_header_size = MAX_SMB2_HDR_SIZE,
3447 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3448 .lock_cmd = SMB2_LOCK,
3449 .cap_unix = 0,
3450 .cap_nt_find = SMB2_NT_FIND,
3451 .cap_large_files = SMB2_LARGE_FILES,
3452 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3453 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3454 .create_lease_size = sizeof(struct create_lease_v2),
3455 };
3456
3457 struct smb_version_values smb30_values = {
3458 .version_string = SMB30_VERSION_STRING,
3459 .protocol_id = SMB30_PROT_ID,
3460 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3461 .large_lock_type = 0,
3462 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3463 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3464 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3465 .header_size = sizeof(struct smb2_sync_hdr),
3466 .header_preamble_size = 0,
3467 .max_header_size = MAX_SMB2_HDR_SIZE,
3468 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3469 .lock_cmd = SMB2_LOCK,
3470 .cap_unix = 0,
3471 .cap_nt_find = SMB2_NT_FIND,
3472 .cap_large_files = SMB2_LARGE_FILES,
3473 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3474 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3475 .create_lease_size = sizeof(struct create_lease_v2),
3476 };
3477
3478 struct smb_version_values smb302_values = {
3479 .version_string = SMB302_VERSION_STRING,
3480 .protocol_id = SMB302_PROT_ID,
3481 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3482 .large_lock_type = 0,
3483 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3484 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3485 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3486 .header_size = sizeof(struct smb2_sync_hdr),
3487 .header_preamble_size = 0,
3488 .max_header_size = MAX_SMB2_HDR_SIZE,
3489 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3490 .lock_cmd = SMB2_LOCK,
3491 .cap_unix = 0,
3492 .cap_nt_find = SMB2_NT_FIND,
3493 .cap_large_files = SMB2_LARGE_FILES,
3494 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3495 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3496 .create_lease_size = sizeof(struct create_lease_v2),
3497 };
3498
3499 #ifdef CONFIG_CIFS_SMB311
3500 struct smb_version_values smb311_values = {
3501 .version_string = SMB311_VERSION_STRING,
3502 .protocol_id = SMB311_PROT_ID,
3503 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3504 .large_lock_type = 0,
3505 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3506 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3507 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3508 .header_size = sizeof(struct smb2_sync_hdr),
3509 .header_preamble_size = 0,
3510 .max_header_size = MAX_SMB2_HDR_SIZE,
3511 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3512 .lock_cmd = SMB2_LOCK,
3513 .cap_unix = 0,
3514 .cap_nt_find = SMB2_NT_FIND,
3515 .cap_large_files = SMB2_LARGE_FILES,
3516 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3517 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3518 .create_lease_size = sizeof(struct create_lease_v2),
3519 };
3520 #endif /* SMB311 */
Linux with added FPC-III support